Division connector

[0002] This invention relates to a division connector in which sub-connector housings are received in a frame.

[0003] One conventional division connector is disclosed, for example, in the Unexamined Japanese Patent Application Publication No. Hei8-025359. As shown in FIG. 14, this connector has a plurality of receiving chambers 3 which are provided within a frame 1, and are separated from one another by partition walls 2. The receiving chambers 3 are different in shape from one another, and sub-connector housings 4, corresponding in shape respectively to these receiving chambers, are fitted in the receiving chambers, respectively. A plurality of cavities 5 each for receiving a metal terminal are provided in each of the sub-connector housings 4, and mating connector housings, corresponding in shape respectively to these sub-connector housings, can be fitted in the sub-connector housings, respectively, so that the metal terminals can be connected to mating metal terminals, respectively.

[0004] In such a division connector, part of the sub-connector housings is, in some cases, changed into a new shape when effecting a specification change such as a change of a circuit construction. In such a case, not only the sub-connector housing, which is to be changed in shape, and its mating connector housing, but also the frame itself must be replaced by those of new shapes, respectively, and therefore there has been encountered a problem that the production cost increases.

[0005] This invention has been made under the above circumstances, and its object is to provide a division connector in which a common frame can be used when effecting a specification change.

[0006] The above problem is solved by a division connector of aspect 1 of the present invention comprising a frame including a receiving chamber; metal terminals; sub-connector housings which have cavities for respectively receiving the metal terminals, and are fitted in the receiving chamber in a juxtaposed manner, the sub-connector housings being suitably selected from a sub-connector housing group including a plurality of kinds of housings having different outer dimensions; and withdrawal prevention means for retaining the sub-connector housings in the receiving chamber against withdrawal.

[0007] The invention of aspect 2, depending from aspect 1, is characterized in that a plurality of guide grooves, formed in one of an inner wall surface of the receiving chamber and an outer wall surface of the sub-connector housing, are juxtaposed in a direction of juxtaposition of the sub-connector housings, and guide projections, formed on the other, are fitted in the guide grooves to position the sub-connector housing, and to set an arrangement pitch of the guide grooves to an integral multiple of an arrangement pitch of the cavities.

[0008] The invention of aspect 3, depending from aspect 1 or aspect 2, is characterized in that in the group of sub-connector housings, an arrangement pitch, serving as a reference, is set with respect to the same kind of cavities, and the outer dimension of the sub-connector housing, having the cavities, in the direction of juxtaposition of the sub-connector housings, is set to an integral multiple of the arrangement pitch serving as the reference.

[0009] The invention of aspect 4, depending from anyone of aspects 1 to 3, is characterized in that a positioning wall projects from an inner side surface of the receiving chamber, toward which the sub-connector housings are fitted, and extends in the direction of juxtaposition of the sub-connector housings, and the fitted sub-connector housings can be positioned on opposite sides of the positioning wall facing away from each other in a direction of a thickness of the positioning wall, and the sub-connecting housing group includes sub-connector housings, each having a reception recess for receiving the positioning wall, so that the sub-connector housings can be fitted in straddling relation to the positioning wall.

[0010] In the invention of aspect 1, the sub-connector housings are suitably selected from the sub-connector housing group, including the plurality of kinds of housings having different outer dimensions, and a combination of the selected housings are fitted in the receiving chamber in a juxtaposed manner. Therefore, when exchanging the sub-connector housings in accordance with a change of the specification, the same frame can be used, and the production cost can be reduced.

[0011] In the invention of aspect 2, the sub-connector housing can be positioned by fitting the lock projections into the guide grooves. The arrangement pitch of the guide grooves is an integral multiple of the arrangement pitch of the cavities, that is, the arrangement pitch of the metal terminals, and therefore even when the sub-connector housing is disposed in any position, the metal terminals are arranged at the predetermined pitch, and the corresponding mating connector housings can be easily constructed.

[0012] In the invention of aspect 3, when a plurality of sub-connector housings, having the same kind of cavities, are juxtaposed, with no gap formed therebetween, the metal terminals in the cavities are arranged at the pitch serving as the reference, and therefore the mating connector housings can be easily constructed, and besides a space-utilizing efficiency is enhanced.

[0013] In the invention of aspect 4, the positioning wall projects from the inner side surface of the receiving chamber, and therefore the sub-connector housings can be positioned on the opposite sides of this positioning wall facing away from each other in the direction of the thickness thereof. Part of the sub-connector housings have the reception recess for receiving the positioning wall, and therefore can be fitted in straddling relation to the positioning wall.

[0014] FIG. 1 is an exploded, perspective view showing female and male division connectors of a first embodiment.

[0015] FIG. 2 a rear view of the female division connector.

[0016] FIG. 3 is a rear view of a female-side frame.

[0017] FIG. 4 is a plan view of the female-side frame.

[0018] FIG. 5 is a cross-sectional view showing a condition before a female housing is fitted into the female-side frame.

[0019] FIG. 6 is a rear view of the male division connector.

[0020] FIG. 7 is a rear view of a male-side frame.

[0021] FIG. 8 is a cross-sectional view showing a condition before a male housing is fitted into the male-side frame.

[0022] FIG. 9 is a cross-sectional view showing a condition in which the female and male division connectors are fitted together.

[0023] FIG. 10 is a cross-sectional view showing a condition in which the female and male division connectors are fitted together.

[0024] FIG. 11 is a rear view of the female division connector, showing anther assembling example.

[0025] FIG. 12 is a rear view of a second embodiment of a female division connector.

[0026] FIG. 13 is a rear view of a male division connector.

[0027] FIG. 14 is a plan view showing a conventional division connector.

[0028] A first embodiment of the present invention will now be described with reference to FIGS. 1 to 11.

[0029] A connector of this embodiment comprises a pair of female and male division connectors F and M which can be fitted together. In the following description, those sides of the female division connector F and male division connector M, which are fitted together, are defined as their respective front sides.

[0030] As shown in FIGS. 1 and 2, the female division connector F comprises a female-side frame 10, having a receiving chamber 11 therein, and a plurality of (here, five) female sub-connector housings 20 (herein after referred to as “female housings”) which can be fitted into the receiving chamber 11 (Part of the female housings 20 are shown in FIG. 1). The female housings 20 will be designated by reference numeral 20 when giving description common to these female housings, and the female housings will be specified by applying any of suffixes A to C to reference numeral 20 when describing the female housings in a distinguishing manner. These female housings 20A to 20C are suitably selected from a female sub-connector housing group described later.

[0031] As shown in FIGS. 1 and 3 to 5, the female-side frame 10 is made of a synthetic resin, and is formed into a generally box-shape, and can be fitted into a hood portion 32 of the male connector M (described later) in such a manner that its front wall 11A is first introduced thereinto. A lock arm 12, which can be elastically deformed upwardly and downwardly, is formed on an upper surface of the female-side frame 10.

[0032] The interior of the female-side frame 10 defines the receiving chamber 11 of a generally rectangular shape having an open rear side. A positioning wall 13 projects from the front wall 11A (corresponding to “an inner side surface” in the present invention) into the receiving chamber 11, and extends in a right-left direction over an entire width of the receiving chamber 11, and is disposed centrally of the dimension thereof in an upward-downward direction. The receiving chamber 11 is divided into two (upper and lower) sections by this positioning wall 13, and the projecting dimension of the positioning wall 13 is part (a little smaller than a half) of the depth of the receiving chamber 11, and with this projecting dimension, the receiving chamber 11 is not completely partitioned in the upward-downward direction (see FIG. 5).

[0033] As shown in FIGS. 1, 2 and 5, the female housings 20 are made of a synthetic resin, and are formed into a generally box-shape, and have a plurality of (more specifically, 8, 3 and 6 respectively for the female housings 20A, 20B and 20C) juxtaposed cavities 21 for respectively receiving female metal terminals 22 which cavities are arranged at a predetermined pitch d in a right-left direction. An outer dimension of the female housings 20 in the upward-downward direction is about a half of the inner dimension of the receiving chamber 11 in the upward-downward direction, and the outer size of a front portion of each female housing is slightly reduced. The female housings can be received in the upper and lower sections of the receiving chamber 11 in such a manner that the female housings in the upper section are disposed in inverted relation to the female housings in the lower section. Each female housing 20 is held between the positioning wall 13 and a wall surface of the receiving chamber 11, and is thus positioned in the upward-downward direction.

[0034] The outer dimension of the female housings 20 in the right-left direction is determined, using the arrangement pitch d of the cavities 21 (that is, an arrangement pitch of the female metal terminals 22) as a reference, and this outer dimension is set generally to an integral multiple of this pitch. More specifically, this dimension is set to a value obtained by adding “1” to the number of the cavities 21 and then by multiplying it by the arrangement pitch d, and the respective dimensions of the female housings 20A, 20B and 20C are 9d,4dand 7d.Therefore, when the plurality of female housings 20 are arranged in the right-left direction within the receiving chamber 11, with no gap formed therebetween, the cavities 21 of the juxtaposed female housings 20 are disposed at the predetermined pitch.

[0035] Each cavity 21 of the female housing 20 is open to its front and rear ends, and the female metal terminal 22, connected to a wire W, can be inserted into this cavity from the rear opening thereof. A tab 41A of a male metal terminal 41 (described later) can be inserted into the cavity 21 from the front opening thereof, and can be electrically connected to the female metal terminal 22. A pair of tab passage grooves 18, extending in the right-left direction, are formed through the front wall 11A of the female-side frame 10, and are disposed respectively at height positions corresponding respectively to the rows of cavities 21 of the female housings 20 received in the upper and lower sections of the receiving chamber 11. The tabs 41A can pass through these tab passage grooves.

[0036] Lock projections 24 (corresponding to “withdrawal prevention means” in the present invention) are formed on and project respectively from those portions of an upper surface (in the case of those female housings received in the upper section of the receiving chamber 11. This upper surface corresponds to “an outer wall surface of the sub-connector housing” in the present invention) of the female housing 20 corresponding respectively to the cavities 21. A plurality of channel-shaped guide grooves 15 are formed in each of upper and lower inner surfaces of the receiving chamber 11, and extend in the forward-rearward direction, and are juxtaposed to one another in the right-left direction. The arrangement pitch of these guide grooves 15 is equal to the arrangement pitch of the lock projections 24 and therefore to the arrangement pitch d of the cavities 21. When fitting the female housing 20A into the receiving chambers 11, the lock projections 24 are fitted respectively into the corresponding guide grooves 15, thereby positioning the female housing 20A in the right-left direction. Notches 16 are formed in each of the upper and lower walls of the female-side frame 10, and are disposed respectively at those positions corresponding respectively to those guide grooves 15 spaced from one another at predetermined intervals, the notches 16 extending from the front end of each wall to a generally central portion thereof in the forward-rearward direction. Rear ends of these notches 16 communicate with the corresponding guide grooves 15, respectively, and lock piece portions 17 (corresponding, together with the lock projections 24, to “withdrawal prevention means” in the present invention), which can be elastically deformed upwardly and downwardly, are formed at these portions, respectively. A distal end portion of each lock piece portion 17 projects into the corresponding guide groove 15, and when the female housing 20A is fitted into the receiving chamber 11, the lock piece portion is engaged with the corresponding lock projection 24, thereby preventing the withdrawal of the female housing 20A.

[0037] Next, the male division connector M will be described. As shown in FIGS. 1 and 6, the male division connector M comprises a male-side frame 30, having a receiving chamber 31 therein, and a plurality of (here, two) male sub-connector housings 40 (hereinafter referred to as “male housings”) which can be fitted into the receiving chamber 31. The male housings will be designated by reference numeral 40 when giving description common to these male housings, and the male housings will be specified by applying suffixes A and B to reference numeral 40 when describing the male housings in a distinguishing manner. These male housings 40A and 40B are suitably selected from a male sub-connector housing group described later.

[0038] As shown in FIGS. 1, 7 and 8, the male-side frame 30 is made of a synthetic resin, and has at its front side the hood portion 32 which can fit on the female-side frame 10. A rear portion of the male-side frame 30 is formed into a generally box-shape, and the interior of this rear portion defines the receiving chamber 31 open to the rear side. An engagement claw 33 is formed on and projects downwardly from a central portion of an upper wall of the hood portion 32, and when the female and male connectors F and M are fitted together, this engagement claw 33 is engaged with the lock arm 12, thereby locking the two connectors F and M together against disengagement from each other.

[0039] The receiving chamber 31 of the male-side frame 30 is generally similar in construction to the receiving chamber 11 of the female-side frame 10, and therefore will be described briefly. A positioning wall 34 projects from an inner wall 31A (corresponding to “an inner side surface” in the present invention) of the receiving chamber 31, and extends in the right-left direction, and the receiving chamber 31 is divided into two (upper and lower) sections by this positioning wall. Upper and lower tab passage grooves 35 are formed through the inner wall 31A of the receiving chamber 31, and extend in the right-left direction. Juxtaposed guide grooves 37 are formed in each of the upper and lower inner surfaces of the receiving chamber 31, and are so disposed as to correspond to the mating female-side guide grooves 15, respectively. Notches 38 are formed in each of the upper and lower walls, and are disposed respectively at those positions corresponding respectively to those guide grooves 37 spaced from one another at predetermined intervals, and lock piece portions 39 are formed at rear end portions of these notches, respectively.

[0040] As shown in FIGS. 1, 6 and 8, the male housings 40 are made of a synthetic resin, and are formed into a generally box-shape. The male housing 40 has a symmetrical construction which is symmetrical in the upward-downward direction, and two (upper and lower) rows of juxtaposed cavities 42 for respectively receiving the male metal terminals 41 are arranged in the right-left direction at a pitch equal to the pitch d of the female-side cavities 21. An outer dimension of the male housing 40 in the upward-downward direction is generally equal to an inner dimension of the receiving chamber 31 in the upward-downward direction. A reception recess 43 for receiving the positioning wall 34 is formed in a front portion of the male housing 40, and is disposed centrally of the dimension thereof in the upward-downward direction, and the male housing 40 can be fitted into the receiving chamber 31 in straddling relation to the positioning wall 34.

[0041] The outer dimension of the male housings 40 in the right-left direction is set generally to an integral multiple of the arrangement pitch d (serving as the reference) of the cavities 42 (that is, the arrangement pitch of the female metal terminals 22 and hence the arrangement pitch of the male metal terminals 41). More specifically, this dimension is set to a value obtained by adding “1” to the number of the cavities 42, juxtaposed in the right-left direction, and then by multiplying it by the arrangement pitch d.

[0042] Each cavity 42 of the female housing 20 is open to its front and rear ends, and the male metal terminal 41, connected to a wire W, can be inserted into this cavity from the rear opening thereof, and the tab 41A of the male metal terminal 41 projects from the front opening thereof. Lock projections 44 (corresponding, together with the lock piece portions 39, to “withdrawal prevention means” in the present invention) are formed on and project respectively from those portions of each of the upper and lower surfaces (corresponding to “an outer wall surface of the sub-connector housing” in the present invention) of the male housing 30 corresponding respectively to the cavities 42, and these lock projections can be fitted in the respective guide grooves 37 in the receiving chamber 31, and can be engaged with distal ends of the lock piece portions 39.

[0043] This embodiment has the above construction, and its assembling procedure will now be described.

[0044] The metal terminals 22 and 41 are beforehand mounted only in the necessary cavities 21 and 42 of the female and male housings 20 and 40. For attaching the female housings 20 to the female-side frame 10, each female housing 20, disposed in a condition shown in FIG. 5, is fitted into the predetermined position in the receiving chamber 11. At this time, the lock projections 24 are fitted respectively into the corresponding guide grooves 15, so that the female housing 20 is positioned in the right-left direction. The front portion of the female housing 20 is inserted between the positioning wall 13 and the wall surface of the receiving chamber 11, so that the female housing 20 is positioned in the upward-downward direction. When the female housing 20 is pushed into the proper position until it is brought into abutting engagement with the front wall 11A, the distal ends of the lock piece portions 17 are elastically engaged with the corresponding lock projections 24, respectively, thereby retaining the female housing 20 against withdrawal. The lock projections 24 serve as the portions for positioning the female housing 20, and also serves as the portions for effecting the withdrawal prevention, and therefore the construction is simplified.

[0045] In this manner, the female housings 20A and 20B are fitted into the upper section of the receiving chamber 11, and are juxtaposed in the right-left direction, and also the female housings 20B, 20C and 20B are fitted into the lower section of this receiving chamber, and are juxtaposed in the right-left direction, thus completing the female division connector F (see FIGS. 2 and 9).

[0046] For attaching the male housings 40 to the male-side frame 30, each male housing 40, disposed in a condition shown in FIG. 8, is fitted into the predetermined position in the receiving chamber 31. At this time, the lock projections 44 are fitted respectively into the corresponding guide grooves 37, so that the male housing 40 is positioned in the right-left direction. The tab 41A of each male metal terminal 41 passes through the tab passage groove 35, formed through the inner wall 31A, and projects into the interior of the hood portion 32. When the male housing 40 is pushed into the proper position until it is brought into abutting engagement with the inner wall 31A, the distal ends of the lock piece portions 39 are elastically engaged with the corresponding lock projections 44, respectively, thereby retaining the male housing 40 against withdrawal (see FIG. 9). At this time, the positioning wall 34 of the receiving chamber 31 is received in the reception recess 43 of the male housing 40, so that the male housing 40 is disposed in straddling relation to the positioning wall 34. In this manner, the male housings 40A and 40B are fitted into their respective predetermined position in the receiving chamber 31, thus completing the male division connector M.

[0047] Then, the female division connector F and the male division connector are fitted together. In a condition shown in FIG. 9, as the female division connector F is fitted into the hood portion 32, each of the tabs 41A, projecting into the hood portion 32, is inserted into the cavity 21 through the tab passage groove 18 in the male-side frame 10, and is electrically connected to the female metal terminal 22. When the front wall 11A of the female division connector F is pushed into the proper position where it abuts against the inner wall 31A of the hood portion 32, the lock arm 12 is elastically engaged with the retaining claw 33, thereby locking the two connectors F and M together against disengagement, thus completing the connector assembling operation (see FIG. 10).

[0048] In the above connector, for example, part of the plurality of female metal terminals 22, received in the female housing 20A, are connected to the male metal terminals 41 received in the male housing 40A, while the other female metal terminals 22 are connected to the male metal terminals 41 received in the male housing 40B. Thus, one housing can be connected to a plurality of mating housings in such a manner that it extends over the mating housings, and therefore even when there are provided a plurality of mating connectors because of a circuit construction, it is not necessary to provide housings each corresponding to a respective one of the mating housings as in an ordinary connector, and therefore the number of the connector housings can be reduced.

[0049] With respect to the female division connector F (Although not described in detail, the following can be similarly applied to the male division connector M), any partition wall, dividing the receiving chamber into sections as in the conventional division connector, is not provided in the female-side frame 10, and the plurality of female housings 20 can be received in one receiving chamber 11. Each of the female housings 20A to 20C can be fitted into an arbitrary position in the receiving chamber 11 in so far as the lock projections 24 are suitably fitted in the guide grooves 15. Therefore, by changing the arrangement of the female housings 20A to 20C, the circuit construction, formed between the female housings and the corresponding male housings 40A and 40B, can be changed. And besides, the arrangement pitch of the lock projections 24, as well as the arrangement pitch of the guide grooves 15, are equal to the arrangement pitch d of the cavities 21 (and hence the arrangement pitch of the female metal terminals 22), and therefore even when each of the female housings 20A to 20C is disposed in any position in the receiving chamber 11, all of the female metal terminals 22 are arranged at the predetermined pitch. Therefore, particularly when one housing is connected to the plurality of mating housings in such a manner that it extends over the mating housings as in this embodiment, the construction of the male housings 40 does not need to be changed in accordance with the arrangement of the female housings 20A to 20C, and therefore the construction of the mating male housings 40 is simplified.

[0050] The female housings 20 and the male housings 40 are suitably selected from the female and male sub-connector housing groups, respectively, in accordance with a specification, and are attached to the frames 10 and 30, respectively. The female (male) sub-connector housing group includes a plurality of kinds of female (male) housings of different outer sizes, and in this embodiment all of these female (male) housings have the cavities 21 (42) of the same construction, and the arrangement pitch of these cavities has the predetermined value (d).

[0051] For example, the female division connector F2, shown in FIG. 11, is an example in which female housings 20D to 20G other than the above-mentioned female housings are selected from the female sub-connector housing group, and are attached to this female division connector. The female housing 20D has five cavities 21, and the female housing 20E has four cavities 21, and their outer dimensions in the right-left direction are 6dand 5d,respectively. The female housing 20F has two (upper and lower) rows of cavities 21, each row including four cavities 21, and the female housing 20G has a pair of upper and lower cavities 21, and their outer dimensions in the right-left direction are 5dand 2d,respectively. A reception recess (which, although not shown, can receive the positioning wall 13 as described above for the male-side reception recess 43) is formed in a front surface of the female housing 20F, 20G, and these female housings are fitted in a manner to straddle the positioning wall 13 in the upward-downward direction. Each of the female housings 20D to 20G has lock projections 24 formed respectively on those portions of its outer surface(s) corresponding respectively to the cavities 21, and these lock projections are fitted in the respective guide grooves 15, and the lock piece portions 17 are engaged with part of these lock projections 24, thereby retaining each of the female housings 20D to 20G against withdrawal. Although not shown in detail, the male sub-connector housing group also includes the various housings (for example, the type having a row of cavities 42) different in the number of cavities 42 and the outer dimension, and a suitable combination of these housings can be fitted into the male-side frame 30.

[0052] As described above, in this embodiment, the sub-connector housings 20 and 40 are suitably selected from the sub-connector housing groups having the plurality of kinds of housings of different outer dimensions, and a combination of these housings are fitted into the receiving chambers 11 and 31 of the frames 10 and 30 in a juxtaposed manner. Therefore, when exchanging the sub-connector housings 20 and 40 with those of different outer dimensions in accordance with a change of the specification, the same frames 10 and 30 can be used, and the production cost can be reduced.

[0053] For example, the female housing 20 can be positioned in the right-left direction (in the direction of juxtaposition of the sub-connector housings) by fitting the lock projection 24 into the guide grooves 15. The arrangement pitch of the guide grooves 15 is an integral multiple (here, one time) of the arrangement pitch d of the female metal terminals 22, and therefore even when the female housing 20 is disposed in any position, the female metal terminals 22 are arranged at the predetermined pitch, and the corresponding mating male housings 40 can be easily constructed. The foregoing is the same with the male housings 40.

[0054] In the female and male sub-connector housing groups, the arrangement pitch d (serving as the reference) of the cavities 21, 42 is set, and the outer dimension of each housing 20, 40 in the right-left direction (in the direction of juxtaposition) is set to an integral multiple of the arrangement pitch d (serving as the reference). Therefore, when the plurality of housings 20, 40 are juxtaposed to each other, with no gap formed therebetween, the metal terminals 22, 41 in the cavities 21, 42 are arranged at the arrangement pitch serving as the reference, and therefore the mating housings 20, 40 can be easily constructed, and besides a space-utilizing efficiency is enhanced.

[0055] The positioning wall 13, 34 projects from the inner side surface 11A, 31A of the receiving chamber 11, 31, and therefore the type of housings 20, 40, having only one row of cavities 21, 42, can be positioned respectively on the opposite sides of the positioning wall 13, 34 facing away from each other in the direction of the thickness thereof. Part of the housings 20, 40 of the sub-connector housing groups have the reception recess 43 for receiving the positioning wall 13, 34, and therefore can be fitted in straddling relation to the positioning wall 13, 34. Namely, the housings 20, 40 can be arranged not only in the right-left direction but also in the upper and lower sections, and besides the housings can be arranged over the upper and lower sections, and therefore various constructions can be obtained in accordance with the specification.

[0056] Next, a second embodiment of the present invention will be described with reference to FIGS. 12 and 13.

[0057] In each of the female and male sub-connector housing groups of the first embodiment, all of the cavities 21, 42 (that is, all of the metal terminals 22, 41) have the same size. However, in each of female and male sub-connector housing groups of this embodiment, housings, having cavities different in size from the above cavities (that is, having metal terminals different in size from the above metal terminals) are provided in addition to the housings of the first embodiment. In the following description, those portions of the same constructions as those of the first embodiment will be designated by identical reference numerals, and explanation thereof will be omitted.

[0058] The connector of this embodiment comprises a pair of female and male division connectors F3 and M3 which can be fitted together. The female division connector F3 comprises a female-side frame 10, which is identical to that of the first embodiment, and three female housings 20H to 20J attached to this female-side housing. The female housing 20H has two (upper and lower) rows of cavities 21 equal in size to those of the first embodiment, each row including three cavities 21. These cavities are arranged at a pitch d in a right-left direction, and an outer dimension of this female housing is 4d.Three lock projections 24 are formed respectively on those portions of each of upper and lower surfaces of the female housing 20H corresponding respectively to the cavities 21.

[0059] An outer dimension of the female housing 20I in the right-left direction and an outer dimension thereof in an upward-downward direction are equal to those of the female housing 20H, respectively. Two (upper and lower) rows of cavities 26, larger in size than the cavities 21, are formed in the female housing 20I, each row having two cavities 26. Female metal terminals (not shown), larger in size than the female metal terminals 22, can be mounted in the cavities 26, respectively. Three lock projections 24 are formed on each of upper and lower surfaces of the female housing 20I in the same manner as described above for the female housing 20H. Each cavity 26 is disposed at a position corresponding to the two outer ones of the three lock projections 24.

[0060] An outer dimension of the female housing 20J in the right-left direction and an outer dimension thereof in the upward-downward direction are equal to those of the female housing 20H, respectively. A pair of upper and lower cavities 27, larger in size than the cavities 26, are formed in the female housing 20J. Female metal terminals (not shown), larger in size than the female metal terminals mounted respectively in the cavities 26, can be mounted in the cavities 27, respectively. Three lock projections 24 are formed on each of upper and lower surfaces of the female housing 20J in the same manner as described above for the female housing 20H. Each cavity 27 is disposed at a position corresponding to the central one of the three lock projections 24.

[0061] The male division connector M3 comprises a male-side frame 30, and three male housings 40C to 40E attached to this male-side frame. The male housings 40C to 40E have the same outer dimension in the right-left direction, and also have the same outer dimension in the upward-downward direction. Three lock projections 44 are formed on each of upper and lower surfaces of each of these male housings. The male housing 40C is fitted in a position corresponding to the female housing 20H, and cavities 42 for respectively receiving male metal terminals 41 are formed respectively in those portions of this male housing corresponding respectively to the cavities 21. The male housing 40D is fitted in a position corresponding to the female housing 20I, and has cavities 46 corresponding respectively to the cavities 26, and male metal terminals (not shown), larger in size than the male metal terminals 41, can be mounted in these cavities, respectively. The male housing 40E is fitted in a position corresponding to the female housing 20J, and has cavities 47 corresponding respectively to the cavities 27, and male metal terminals (not shown), larger in size than the male metal terminals in the cavities 46, can be mounted in these cavities, respectively.

[0062] Tabs of the male metal terminals are passed through a corresponding tab passage groove 18, 35 formed in an inner side surface of a receiving chamber 11, 31, and these tab passage grooves 18 and 35 have a groove-shape, and therefore can allow the tabs to pass there through even if the positions of projecting of the tabs and the widths of the tabs are different in the right-left direction.

[0063] In the female and male sub-connector housing groups, an arrangement pitch for each kind of metal terminals is determined, and the outer dimension of each sub-connector housing (having the cavities) in the right-left direction (direction of juxtaposition) is set to an integral multiple of the arrangement pitch serving as a reference. In the above connector, the arrangement pitch (serving as the reference) of the female metal terminals, mounted, for example, in the respective cavities 26, is set to 2d,and the outer dimension of the female housing 20I in the right-left direction is 4dwhich is an integral multiple thereof. When the female housings 20I and others, having such cavities 26, are juxtaposed in the right-left direction, with no gap formed therebetween, the cavities 26 are arranged at the predetermined pitch 2d.Similarly, the arrangement pitch (serving as the reference) of the cavities 27 is set to 4d,and the outer dimension of the female housing 20J in the right-left direction is 4dwhich is an integral multiple thereof. When the female housings 20J and others, having such cavities 27, are juxtaposed in the right-left direction, with no gap formed therebetween, the cavities 27 are arranged at the predetermined pitch 4d.Thus, when a plurality of housings, having the same kind of cavities, are juxtaposed, with no gap formed there between, the metal terminals, received respectively in these cavities, are arranged at the pitch serving as the reference, and therefore the mating connector housings can be easily constructed, and a space-utilizing efficiency is enhanced.

[0064] The arrangement pitches (d, 2dand 4d), serving as the reference, for the three kinds of metal terminals are set to an integral multiple of the minimum d of these arrangement pitch values, and therefore a combination of sub-connector housings, having different kinds of cavities, can be easily used in the same frame.

[0065] The technical scope of the present invention is not limited to the above embodiments, and for example, the following falls within the technical scope of this invention.

[0066] (1) In the present invention, any positioning wall is not provided within the receiving chamber, and the sub-connector housings are juxtaposed only in the right-left direction. For example, by providing a plurality of positioning walls, sub-connectors housings are arranged in three or more rows in the upward-downward direction.