Electrical connector enabling prevention of incomplete coupling

Abstract: In an electrical connector (1), a male connector body (20) and a female connector body (10) are coupled and locked together to effect the mechanical connection of electrical terminals housed in the respective connector bodies. To prevent incomplete coupling of the relevant connector bodies, a path (3) is formed in the male connector body (20) in such a manner as to correspond to the shape and dimension of a bracket (2) for fixing the electrical connector to the body of an automotive vehicle or components thereof, and a rib (11) is provided on the female connector body (10) in such a manner as to traverse the path. This rib blocks a part of the path in the event that the two connector bodies are improperly coupled with each other, thus making it possible to detect incomplete coupling. An electrical connector of another type has another configuration for the same purpose. In this second type of electrical connector, a support finger (21 a ) and a detection finger (23) are provided on a bracket (2), and a path (3) is formed in the male connector body (20) in such a manner as to correspond to the shape and dimension of the support finger, a rib (11 a ) being provided on the rearward portion of the female connector body. This rib is adapted to bear against the detection finger when the relevant two connector bodies are improperly coupled with each other, and this serves to prevent entry of the support finger into the path, thus enabling detection of incomplete coupling.

Description: The present invention relates to an assembly adapted to ensure complete coupling of associated connector bodies (hereinafter, referred to simply as electrical connector) for use in wire harnesses for automotive vehicles or the like. In a conventional electrical connector, a male connector body and a female connector body are coupled and locked together to effect the mechanical connection of electrical terminals housed in the respective connector bodies. It has been conventional practice to confirm whether or not a connector is in locked engagement by manually sensing the state of engagement or listening to the snapping sound which is heard when the relevant connector bodies assume a locked state. However, confirmation solely by sensation is very imprecise and proper confirmation is unlikely to be maintained if unskilled workers are employed for this task. The method of confirmation which relies on listening to the snapping sounds is also unreliable since it is difficult to perform this task in certain types of working environments. Most electrical connectors used in wire harnesses for automotive vehicles are fixed to the body of an automotive vehicle or components thereof with consideration given to such factors as suitability of positioning, the need to guard against vibrations, and the prevention of noise generation. In most cases, connectors are fixed to the relevant member after they have been brought into locked engagement, in other words, after male and female connector bodies have been coupled with each other. In these circumstances, if it were possible for confirmation to be made as to whether male and female connector bodies are in complete engagement during the fixing operation, the efficiency of assembly would be improved, and the possibility of incomplete coupling of the connector bodies would also be prevented. The present invention was contrived with a view to solving the above-mentioned problems which are inherent to prior art connectors and relies upon detecting any incomplete coupling of mail and female connector bodies during a process by means of which electrical connectors are fixed to the body of an automotive vehicle or components therefor. It is known from the prior art of EP-A-0 090 502 to provide an electrical connector comprising a male connector body and a female connector body which are coupled and locked together to effect the mechanical connection of electrical terminals housed in the respective connector bodies. A path in which a gauge pin is to be inserted is formed in the male connector body in such a manner as to correspond to the shape and dimension of the pin, and a rib is provided on said female connector body in such a manner as to traverse said path when the connector bodies are coupled, said rib being adapted to block a part of said path in the event that the two connector bodies are improperly connected with each other. More particularly, to solve the problems of the prior art, according to one aspect, the present invention provides an assembly comprising a male connector body and a female connector body which are coupled and locked together to effect the mechanical connection of electrical terminals housed in the respective connector bodies, in which a path is formed in said male connector body, and a rib is provided on said female connector body in such a manner as to traverse said path when the female connector body (10) is mated with the male connector body, said rib being adapted to block a part of said path in the event that said two connector bodies are improperly coupled with each other, characterised in that the assembly further comprises a bracket for fixing said electrical connector to the body of an automotive vehicle or components thereof, and said bracket is to be inserted into said path, said path being formed in such a manner as to correspond to the shape and dimension of said bracket. With the assembly according to the present invention, a fixed bracket is smoothly fitted in a path formed in the connector for that purpose when the male and female connector bodies thereof are in complete engagement since there is nothing blocking the path, thus allowing the connector to be fixed to the bracket. In contrast, when these connector bodies are not in complete engagement, the connector cannot be mounted on the bracket since the path is blocked by the rib provided on the female connector body. Thus any worker can immediately detect the improper coupling of the connector bodies. According to a second aspect of, the present invention, another type of an assembly is provided comprising a male connector body and a female connector body which are coupled and locked together to effect the mechanical connection of electrical terminals housed in the respective connector bodies, in which a path is formed in said male connector body and a rib is provided on the female connector body, characterised in that the assembly further comprises a bracket, comprising a support finger and a detection finger, for fixing said electrical connector to the body of an automotive vehicle or components thereof, said path being formed in such a manner as to correspond to the shape and dimension of said support finger, said rib being provided on the rearward portion of said female connector body and being adapted to bear against said detection finger in the event that said connector bodies are improperly coupled with each other, thus preventing entry of said support finger into said path, whereas, when said connector bodies are in a proper coupled condition, said detection finger slides over a back portion of the rib. Thus, with this second type of assembly, the rib formed on the female connector body is adapted to bear against the detection finger when the male and female connector bodies thereof fail to assume a properly coupled condition, and the support finger is therefore prevented from entering the path. On the other hand, when the two connector bodies are in a proper coupled condition, the detection finger slides over the back portion of the rib, and this allows the support finger to enter the path so as to support the connector. In addition, in such a condition, the detection finger engages the back portion of the rib, and disconnection of the connector is thus prevented. Many other advantages, features and additional objects of the present invention will become apparent to those skilled in the art upon making reference to the detailed description and the accompanying drawings in which preferred embodiments incorporating the principles of the present invention are shown by way of illustration only. Fig. 1 is a perspective view of an assembly according to the present invention, Fig. 2 is a perspective view looking in the direction shown by the arrows II of Fig. 1, Fig. 3 is a longitudinal sectional view taken along the line III-III of Fig. 1, which shows the male female connector bodies in a disconnected condition, Fig. 4 is a longitudinal sectional view similar to Fig. 3 which shows the two connectors in a properly coupled condition, Fig. 5 is a longitudinal sectional view similar to Fig. 3 which shows the same two connector bodies in an incompletely coupled condition, Fig. 6 is a perspective view of another type of assembly according to the present invention, Fig. 7 is a perspective view looking in the direction shown by the arrows VII of Fig. 6, Fig. 8 is a longitudinal sectional view taken along the line VIII-VIII of Fig. 6 which shows the male and female connector bodies in a disconnected condition, Fig. 9 is a longitudinal sectional view similar to Fig. 8 which shows the two connector bodies in a properly coupled condition, Fig. 10 is a longitudinal sectional view similar to Fig. 8 which shows the same connector bodies in an incompletely coupled condition, Fig. 11 is an explanatory diagram showing an incompletely coupled connector as being mounted on a bracket, and Fig. 12 is an explanatory diagram showing a properly coupled connector as being mounted on a bracket. Referring to the accompanying drawings, one embodiment of an assembly according to the present invention will now be described. Figs. 1 and 2 are perspective views of an electrical connector 1 according to the present invention. This electrical connector is configured to complete the mechanical connection of electrical terminals (not shown) housed in the female and male connector bodies 10, 20 thereof by coupling and locking together those two connector bodies. As is mentioned in the previous part of this specification, the electrical connector 1 is fixed to the body of an automotive vehicle or of one of the components thereof by means of a bracket 2. Such fixing of the connector is attained by inserting a forward portion 21 of the bracket 2 into a path 3 formed on the electrical connector 1 after the connector 1 has been properly coupled in such a manner that a projection 31 provided inside the path 3 fits in a hole 22 formed in the forward portion 21 of the bracket 2. The path 3 is formed in such a manner as to correspond to the shape and dimension of the forward portion of the bracket 2. As shown in Fig. 3, a rib 11 is provided at a predetermined position on the female connector body 10 in such a manner as to traverse the path 3 when the female connector body 10 is mated with the male connector body 20. The rib 11 is preferably formed on the connector body 10 at such a location that it passes through the path 3 when the two connector bodies 10, 20 are properly mated with each other (Fig. 4) and blocks a part of the path 3 when the same two connector bodies 10, 20 are improperly mated (Fig. 5). Thus, with the electrical connector 1 having a structure according to the present invention, since there is nothing blocking the path 3 formed on the connector 1 in which the bracket 2 is to be inserted when the female and male connector bodies 10, 20 are in a properly coupled condition (Fig. 4), the connector 1 is smoothly fitted over the bracket 2 so as to be fixed thereto. On the other hand, since the rib 11 on the female connector body 10 blocks a part of the bracket insertion path 3 when the female and male connector bodies 10, 20 are in an improperly coupled condition (Fig. 5), the connector 1 cannot be mounted on the bracket 2. Thus, workers can immediately detect the improper coupling of the connector 1. The second type of assembly will now be described with reference to Fig. 6 through 12. The reference numbers used in Figs. 1 through 5 are also used to indicate components and/or portions similar to those in the relevant figures, and a detailed description of those components and/or portions will be omitted. The electrical connector 1 is fixed to the body of an automotive vehicle or one of the components thereof by means of a bracket 2 due to the same reason as that previously explained. When the support finger 21a of the bracket 2 is inserted into the path 3 (Fig. 7) formed in the electrical connector 1, a projection 31 provided inside the path 3 fits in a hole 22 formed in the support finger 21a of the bracket 2 and is locked in place, thus allowing the connector 1 to be fixed to the bracket 2. The path 3 is formed to correspond to the shape and dimension of the support finger 21a of the bracket 2. As shown in Figs. 6 and 8, a detection finger 23 and a rib 11a are provided on the bracket 2 and the rearward portion of the female connector body 10, respectively. This rib 11a is provided in such a location that it stays outside the path 3 when the female connector body 10 and the male connector body 20 are mated with each other, and the detection finger 23 stays on the back portion of the rib 11a in the event that the two connector bodies 10, 20 are properly mated with each other (Fig. 9). On the other hand, the rib 11a bears against the detection finger 23 of the bracket 2 (Fig. 11) in the event that both connector bodies 10, 20 are improperly coupled with each other (Fig. 10), entry of the support finger 21a into the path 3 thus being blocked. As previously mentioned, the rib 11a does not bear against the detection finger 23, in the event that the connector bodies 10, 20 are properly mated with each other (Fig. 9), and this allows the support finger 21a to smoothly enter the path 3 to support and fix the electrical connector 1 thereto. In association with this entry of the support finger 21a into the path 3, the detection finger 23 engages the back portion of the rib 11a, thus making it possible to ensure fixing of the connector 1 even more reliably. The present invention enables prevention of incomplete coupling of a connector, and this serves to eliminate the possibility of occurrence of electrical troubles in end products placed on the market. In addition, the present invention allows the connector to be fixed on the bracket, and this serves to ensure even stronger engagement of the male and female connector bodies. The present invention, therefore, is well adapted to carrying out the objects and attaining the ends and advantages mentioned, as well as others inherent thereto.

Claims: An assembly comprising an electrical connector (1) comprising a male connector body (20) and a female connector body (10) which are coupled and locked together to effect the mechanical connection of electrical terminals housed in the respective connector bodies (10, 20), in which a path (3) is formed in said male connector body (20), and a rib (11) is provided on said female connector body (10) in such a manner as to traverse said path (3) when the female connector body (10) is mated with the male connector body (20), said rib (11) being adapted to block a part of said path (3) in the event that said two connector bodies (10, 20) are improperly coupled with each other, characterised in that the assembly further comprises a bracket (2) for fixing said electrical connector (1) to the body of an automotive vehicle or components thereof, and said bracket (2) is to be inserted into said path (3), said path (3) being formed in such a manner as to correspond to the shape and dimension of said bracket (2). An assembly comprising an electrical connector (1) comprising a male connector body (20) and a female connector body (10) which are coupled and locked together to effect the mechanical connection of electrical terminals housed in the respective connector bodies (10, 20), in which a path (3) is formed in said male connector body (20) and a rib (11a) is provided on the female connector body (10), characterised in that the assembly further comprises a bracket (2), comprising a support finger (21a) and a detection finger (23), for fixing said electrical connector (1) to the body of an automotive vehicle or components thereof, said path (3) being formed in such a manner as to correspond to the shape and dimension of said support finger (21a), said rib (11a) being provided on the rearward portion of said female connector body (10) and being adapted to bear against said detection finger (23) in the event that said connector bodies (10, 20) are improperly coupled with each other, thus preventing entry of said support finger (21a) into said path (3), whereas, when said connector bodies (10, 20) are in a proper coupled condition, said detection finger (23) slides over a back portion of the rib (11a).

Inventors: AIHARA YASUYUKI, ICHIDA KIYOFUMI, KANO HIDEKI, MIYAZAKI NOBORU, SUZUKI IZUMI RESIDENCE HIGASHI, TSUCHIYA YOSHIKAZU, AIHARA, YASUYUKI, ICHIDA, KIYOFUMI, KANO, HIDEKI, MIYAZAKI, NOBORU, SUZUKI, IZUMI 206, RESIDENCE HIGASHITAKARAGI, TSUCHIYA, YOSHIKAZU
Applicants: HONDA MOTOR CO LTD, SUMITOMO WIRING SYSTEMS, HONDA GIKEN KOGYO KABUSHIKI KAISHA, SUMITOMO WIRING SYSTEMS, LTD.
Application year: 1988
Main classification: H01R13
IPC codes: H01R13