Errorproof device in combination with a modular socket

[0001] 1. Field of the Invention

[0002] The present invention relates to an errorproof device, and more particularly to the combination of an errorproof device and a modular socket.

[0003] 2. Description of Related Art

[0004] A conventional communication modular socket for connection with a modular plug used in a telephone line or a modem does not have the ability to distinguish whether the plug to be inserted into the socket has the appropriate dimension. For example, the currently available RJ 11 or RJ45 plugs are both used for communication devices and respectively have a dimension different from the other. Because the RJ 11 plug has a smaller dimension than that of the RJ 45 plug, the RJ 11 plug may be erroneously inserted into the modular socket (namely the RJ 45 socket) configured to mate for the RJ 45 plug and thus leads on the RJ 45 modular socket may be damaged.

[0005] To overcome the shortcomings, the present invention tends to provide an improved modular socket having an errorproof device therein to mitigate the aforementioned problems.

[0006] The primary objective of the present invention is to provide an improved modular socket having an errorproof device inserted into the modular socket to prevent erroneous insertion of a modular plug with an inappropriate dimension when compared with the dimension of the modular socket.

[0007] Another objective of the present invention is that a recovery force providing device is provided to the errorproof device to return the errorproof device to its original position after the errorproof device has been moved.

[0008] Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0014] With reference to FIG. 1, it is noted that the modular socket of the present invention includes a body (1), a errorproof device (2) and a recovery force providing device (3).

[0015] The body (1) includes a through hole (11) defined in one end of the body (1), two opposed slots (12) respectively defined in a side face of the body (1) to communicate with the through hole (11) of the body (1), a stop (121) formed with the body (1) and on a mediate portion of the slot (12), multiple first leads (13) formed inside the body (1) to be connected to second leads on a modular plug (not shown in this drawing) and extending to the other end of the body (1) and an engaging seat (14) oppositely formed with the body (1) relative to the through hole (11) and having a first arcuate face (141) formed on an outer face of the engaging seat (14). Furthermore, the modular socket of the present invention has a casing (10) to be mounted outside the body (1) via a suitable and appropriate method well known in the art.

[0016] The errorproof device (2) has two arms (21) respectively corresponding to and received in one of the two slots (12) of the body (1) and a bridge (22) extending between and connecting the two arms (21), the bridge (22) having a second arcuate face (221) formed to correspond to the first arcuate face (141). Each arm (21) has a wedge head (211) so as to have an inclined top face relative to a bottom face. A gap (23) is defined at a joint between the bridge (22) and the arm (21) so that a receiving space is defined between the arms (21) and the bridge (22). Furthermore, each arm (21) is provided with a boss (212) formed on an outer face of the arm (21) to correspond to the stop (121) of the body (1) and a step (213) formed on an inner face of the arm (21).

[0017] The recovery force providing device (3) has two extensions (31) respectively and oppositely extending in different directions relative to one another and an engaging finger (32) extending between the two extensions (31) to correspond to an engaging plate (15) which is formed on top of the engaging seat (14) of the body (1).

[0018] With reference to FIGS. 2 and 3, it is noted that when the modular socket of the present invention is in assembly, after the recovery force providing device (3) is inserted into the gap (23) between the bridge (22) and the two arms (21), the two arms (21) of the errorproof device (2) are inserted into the two corresponding slots (12) with the first arcuate face (141) engaging the second arcuate face (221). Engagement between the stop (121) of the body (1) and the boss (212) of the errorproof device (2) ensures that there is no excessive extension of the errorproof device (2) into the body (1). Then the casing (10) is mounted on the body (1) to enclose the errorproof device (2) as well as the recovery force providing device (3) inside the body (1) so that escape of the errorproof device (2) from the body (1) is avoided, as is escape of the recovery force providing device (3) from the body (1). As the mounting of the casing (10) to the body (1) is well known in the art, detailed description thereof is omitted for brevity.

[0019] With reference to FIG. 5, before the insertion of a modular plug into the through hole (11) of the body (1), the engaging finger (32) engages with the engaging plate (15) of the body (1) and the wedge head (211) is inserted into the corresponding slot (12).

[0020] Then with reference to FIG. 4, while the modular plug (4) is being inserted into the through hole (11) of the body (1), a bottom end of the modular plug (4) engages with the inclined top face of the wedge head (211) of the arm (21) so as to force the errorproof device (2) to pivot inside the slot (12) via the engagement between the first arcuate face (141) and the second arcuate face (221). After the errorproof device (2) is pivoted, the engaging finger (32) is deformed due to the engagement with the engaging plate (15) and the two arms (21) are pressed downward inside the slots (12) by the bottom end of the modular plug (4).

[0021] Furthermore, the two steps (213) of the two arms (21) are able to prevent erroneous extension of a modular plug with an inappropriate dimension. Because the distance between the two steps (213) is smaller than a distance between two distal ends of the arms (21), insertion of a modular plug having a dimension smaller than the distance between the two distal ends of the arms (21) is stopped by the two steps (213).

[0022] When the modular plug (4) is removed from the modular socket of the present invention, the engaging finger (32) returns to its original shape due to the resilient force stored therein. Thus the errorproof device (2) is pivoted again to its original position and the two arms (21) are also driven to return to the position as shown in FIG. 5.

[0023] It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.