Body mounting type electrical connector

Abstract: A body mounting type electrical connector (10) comprising: a hood (12) which is provided at one end portion of the electrical connector (10) and is formed with an opening (11) for receiving a mating electrical connector (17); a housing (13) for accommodating a plurality of terminals, which is provided at the other end portion of the electrical connector (10); the electrical connector (10) being inserted into a mounting hole (16) of a body member (15) from a distal end of the hood (12) so as to project the distal end of the hood (12) out of an outer surface (15a) of the body member (15) such that the electrical connector (10) is mounted on the body member (15); a hook portion (21) which, when the mating electrical connector (17) is inserted into the opening (11) of the electrical connector (10) initially from one of upper and lower portions of a distal end of the mating electrical connector (17), is provided at a corresponding one of upper and lower portions of the distal end of the hood (12) so as to be engaged with an inner surface (15b) of the body member (15); and a flexible lock (25) which is provided at the other of the the upper and lower portions of the distal end of the hood (12) so as to be engaged with the outer surface (15a) of the body member (15).

Description: BACKGROUND OF THE INVENTION The present invention generally relates to body mounting type electrical connectors to be mounted on a body member and more particularly, to a body mounting type electrical connector which is fixed, at a split portion between, for example, a door of a motor vehicle and a vehicle body, to a body of the door or the vehicle body and then, is coupled with a mating electrical connector so as to be securely locked to the body of the door or the vehicle body. As shown in Fig. 1, a known body mounting type electrical connector 1 of this kind is substantially of a shape of a rectangular parallelepiped and includes a hood 1b formed with a rectangular opening 1a for receiving a mating electrical connector 3 (Fig. 2a) which is also generally of a shape of a rectangular parallelepiped. A pair of retainer plates 1c engageable with a body member 2 project outwardly from upper and lower walls of the hood 1b, respectively. Flexible locks 1d and 1e are formed by arms extending axially rearwardly in a tapered shape from front edges of the upper and lower walls of the hood 1b at a front end of the opening 1a, respectively. Pawl portions 1d′ and 1e′ project outwardly orthogonally to the upper and lower walls of the hood 1b at rear ends of the flexible locks 1d and 1e, respectively. The body member 2 has a mounting hole 2a for receiving the hood 1b of the electrical connector 1 and is disposed at a center between inside and outside panels (not shown). When the electrical connector 1 is inserted into the mounting hole 2a from an inside X of the body member 2 in the direction of the arrow A, the flexible locks 1d and 1e are deflected so as to project into an outside Y of the body member 2. Thus, the pawl portions 1d′ and 1e′ of the flexible locks 1d and 1e are brought into contact with an outer surface 2b of the body member 2 so as to be retained by the outer surface 2b. At the same time, the retainer plates 1c are brought into contact with an inner surface 2c of the body member 2 so as to be retained by the inner surface 2c. As a result, the body member 2 is gripped between the retainer plates 1c and the flexible locks 1d and 1e such that the electrical connector 1 is secured to the body member 2. When the mating electrical connector 3 is coupled with the electrical connector 1 secured to the body member 2 beforehand, clearance between the body member 2 and the outside panel is often small, thereby resulting in little space for inserting the mating electrical connector 3. Therefore, when the mating electrical connector 3 is to be coupled with the electrical connector 1, the mating electrical connector 3 cannot be aligned with the electrical connector 1 but will be inserted into the opening 1a obliquely from above or from below the electrical connector 1 as shown in Fig. 2a. In this case, a front end of the mating electrical connector 3 depresses the projecting flexible lock 1d so as to deflect the flexible lock 1d such that the flexible lock 1d is disengaged from the body member 2. When the flexible lock 1d has been disengaged from the body member 2 as described above, the electrical connector 1 is inclined as shown in Fig. 2b and thus, the flexible lock 1e is also disengaged from the body member 2. As a result, the electrical connector 1 drops from the body member 2. Consequently, such a problem arises that the electrical connector 1 drops inside the door and cannot be taken out of the door easily. SUMMARY OF THE INVENTION Accordingly, an essential object of the present invention is to provide, with a view to eliminating the disadvantages inherent in conventional body mounting type electrical connectors, a body mounting type electrical connector which not only is positively secured to a body member so as not be disengaged from the body member even if an end portion of the electrical connector is depressed by a front end of a mating electrical connector inserted obliquely relative to the electrical connector but can nevertheless be easily inserted into a mounting hole of the body member. In order to accomplish this object of the present invention, a body mounting type electrical connector which is mounted on a body member so as to be coupled with a mating electrical connector, according to the present invention comprises: a hood which is provided at one end portion of the electrical connector and is formed with an opening for receiving the mating electrical connector; a housing for accommodating a plurality of terminals, which is provided at the other end portion of the electrical connector; the electrical connector being inserted into a mounting hole of the body member from a distal end of the hood so as to project the distal end of the hood out of an outer surface of the body member such that the electrical connector is mounted on the body member; a rigid hook portion which, when the mating electrical connector is inserted into the opening of the electrical connector initially from one of upper and lower portions of a distal end of the mating electrical connector, is provided at a corresponding one of upper and lower portions of the distal end of the hood so as to be engaged with an inner surface of the body member; and a flexible lock which is provided at the other of the upper and lower portions of the distal end of the hood so as to be engaged with the outer surface of the body member. Namely, in case the mating electrical connector is obliquely downwardly inserted into the opening of the electrical connector, the hook portion is provided at the upper portion of the distal end of the hood and the flexible lock is provided at the lower portion of the distal end of the hood. On the contrary, in case the mating electrical connector is obliquely upwardly inserted into the opening of the electrical connector, the hook portion is provided at the lower portion of the distal end of the hood and the flexible lock is provided at the upper portion of the distal end of the hood. Moreover, it is desirable that a pair of further flexible locks be provided at opposite sides of the corresponding one of the upper and lower portions of the distal end of the hood such that the hook portion is laterally disposed between the further flexible locks. Since the hook portion is provided at the distal end of the hood of the electrical connector so as to be engaged with the inner surface of the body member as described above, the mating electrical connector does not come into contact with the further flexible locks disposed at the opposite sides of the distal end of the hook portion. As a result, such a phenomenon can be prevented that the electrical connector is detached from the body member upon contact of the distal end of the mating electrical connector with the further flexible locks. BRIEF DESCRIPTION OF THE DRAWINGS This object and features of the present invention will become apparent from the following description taken in conjunction with the preferred embodiment thereof with reference to the accompanying drawings, in which: Fig. 1 is a sectional view of a prior art body mounting type electrical connector to be mounted on a body member (already referred to); Figs. 2a and 2b are sectional views indicative of a drawback of the prior art electrical connector of Fig. 1 (already referred to); Fig. 3 is a sectional view showing a body mounting type electrical connector mounted on a body member, according to the present invention; and Figs. 4a and 4b are sectional views showing steps of mounting the electrical connector of Fig. 3 on the body member. DETAILED DESCRIPTION OF THE INVENTION Referring now to the drawings, there is shown in Figs. 3, 4a and 4b, a body mounting type electrical connector 10 to be mounted on a body 15 of a door of a motor vehicle, according to one embodiment of the present invention. The electrical connector 10 is substantially of a shape of a rectangular parallelepiped and a mating electrical connector 17 to be coupled with the electrical connector 10 is also generally of a shape of a rectangular parallelepiped. A hood 12 is provided at one end of the electrical connector 10 and has a rectangular opening 11 for receiving the mating electrical connector 17. Meanwhile, a housing 13 for accommodating multipolar terminals (not shown) is provided at the other end of the electrical connector 10. The hood 12 is inserted into a mounting hole 16 of the door body 15 from an inside X of the door body 15 to an outside Y of the door body 15 in the direction of the arrow B such that the electrical connector 10 is secured to the door body 15. Then, as shown by the one-dot chain line in Fig. 3, the mating electrical connector 17 is obliquely upwardly fitted into the opening 11 of the electrical connector 10 secured to the door body 15. At a front end of a lower wall of the hood 12, the electrical connector 10 has a front end portion 20 engageable with a lower portion of a peripheral surface of the mounting hole 16 of the door body 15 and an L-shaped hook portion 21 extending rearwardly from the front end portion 20 towards the housing 13. A recess 22 is formed rearwards of the hook portion 21 so as to impart elasticity to the hook portion 21. The hook portion 21 extends through the front end of the lower wall of the hood 12. Meanwhile, a pair of flexible locks 23 each having a pawl 23a engageable with an outer surface 15a of the door body 15 are formed at opposite sides of the lower wall of the hood 12 so as to project outwardly from the mounting hole 16 of the door body 15. Thus, at the lower wall of the hood 12, the hook portion 21 disposed at a central portion of the lower wall of the hood 12 is engaged with an inner surface 15b of the door body 15, while the pawls 23a of the flexible locks 23 are engaged with the outer surface 15a of the door body 15. Therefore, at the lower wall of the hood 12, the hook portion 21 and the flexible locks 23 of the electrical connector 10 are engaged with the door body 15 alternately in the lateral direction of the electrical connector 10, i.e., in the direction orthogonal to the drawing sheet. Meanwhile, a flexible lock 25 is formed at a front end of an upper wall of the hood 12 and recesses are formed at opposite sides of the flexible lock 25, respectively. The flexible lock 25 is formed by an arm extending in a tapered shape rearwardly from an upper face of the front end of the hood 12. A rear end face of the flexible lock 25 acts as a locking pawl 25a engageable with the outer surface 15a of the door body 15. At a location spaced rearwardly a distance equal to a thickness of the door body 15 from the flexible lock 25, a retainer plate 26 projects upwardly from the upper wall of the hood 12 and laterally extends through the upper wall of the hood 12 so as to be engaged with the inner surface 15b of the door body 15. When the electrical connector 10 is mounted on the door body 15, clearance between the door body 15 and an inside panel (not shown) is small and thus, the electrical connector 10 is obliquely upwardly inserted into the mounting hole 16 of the door body 15 as shown in Figs. 4a and 4b. Initially, as shown in Fig. 4a, the front end of the lower wall of the hood 12 is passed through the mounting hole 16 and the hook portion 21 is engaged with a lower portion of the inner surface 15b of the door body 15. In this state, the flexible lock 25 projecting upwardly from the upper wall of the hood 12 is brought into contact with a peripheral edge of the mounting hole 16 of the door body 15. Thus, the flexible lock 25 is deflected downwardly as shown in Fig. 4b so as to pass through the mounting hole 16. When the flexible lock 25 reaches the outside Y of the door body 15, the flexible lock 25 assumes the original shape due to its elasticity so as to project upwardly. Therefore, as shown in Fig. 3, the door body 15 is gripped between the locking pawl 25a of the flexible lock 25 and the retainer plate 26 such that the electrical connector 10 is locked to the door body 15. The electrical connector 10 is secured to the door body 15 as described above and the flexible locks 23 are disposed at the opposite sides of the lower wall of the hood 12. Therefore, at the central portion of the lower wall of the hood 12, no flexible lock projecting downwardly from the door body 15 is provided and only the hook portion 21 is provided so as to be engaged with the inner surface 15b of the door body 15. Thus, even if the mating electrical connector 17 is obliquely upwardly inserted into the opening 11 of the electrical connector 10 as shown in Fig. 3, a lower edge 17a of the mating electrical connector 17 is not brought into contact with the electrical connector 10. Accordingly, it is possible to positively prevent such a phenomenon that at the time of insertion of the mating electrical connector 17 into the opening 11 of the electrical connector 10, the electrical connector 10 is detached from the door body 15 and drops from the door body 15. Meanwhile, in case the mating electrical connector 17 should be obliquely downwardly inserted into the opening 11 of the electrical connector 10, the arrangement of the electrical connector 10 shown in Fig. 3 may be reversed, namely, the hook portion 21 is provided on the upper wall of the hood 12 and the flexible lock 25 is provided on the lower wall of the hood 12. As is clear from the foregoing description, when the mating electrical connector 17 is fitted into the opening 11 of the electrical connector 10 secured to the door body 15, it is possible to prevent the electrical connector 10 from being detached from the door body 15 even if the electrical connector 10 is depressed by the mating electrical connector 17. Therefore, in accordance with the present invention, the electrical connector 10 can be securely fixed to the door body 15. Furthermore, since the electrical connector 10 is structurally quite simple, the electrical connector 10 can be produced at low cost.

Claims: A body mounting type electrical connector (10) which is mounted on a body member (15) so as to be coupled with a mating electrical connector (17), comprising: a hood (12) which is provided at one end portion of the electrical connector (10) and is formed with an opening (11) for receiving the mating electrical connector (17); a housing (13) for accommodating a plurality of terminals, which is provided at the other end portion of the electrical connector (10); the electrical connector (10) being inserted into a mounting hole (16) of the body member (15) from a distal end of the hood (12) so as to project the distal end of the hood (12) out of an outer surface (15a) of the body member (15) such that the electrical connector (10) is mounted on the body member (15) and a flexible lock (25) which, when the mating electrical connector (17) is inserted into the opening (11) of the electrical connector (10) initially from one of upper and lower portions of the distal end of the mating electrical connector (17), is provided at the other of the upper and lower portions of the distal end of the hood (12) so as to be engaged with the outer surface (15a) of the body member (15); characterized by a rigid hook portion (21) which is provided at the one of the upper and lower portions of the distal end of the hood (12) corresponding to the insertion direction of the mating electrical connector (17) so as to be engaged with an inner surface (15b) of the body member (15). A body mounting type electrical connector (10) as claimed in Claim 1, further comprising: an engageable portion (20) which is provided at the hook portion (21) so as to be engaged with a peripheral surface of the mounting hole (16) of the body member (15). A body mounting type electrical connector (10) as claimed in Claim 2, further comprising: a pair of further flexible locks (23) which are provided at opposite sides of the corresponding one of the upper and lower portions of the distal end of the hood (12) so as to be engaged with the outer surface (15a) of the body member (15).

Inventors: SAKATANI ATHUSHI C O SUMITOMO, TANAKA NOBUYOSI C O SUMITOMO W, SAKATANI, ATHUSHI, C/O SUMITOMO WIRING, TANAKA, NOBUYOSI, C/O SUMITOMO WIRING
Applicants: SUMITOMO WIRING SYSTEMS, SUMITOMO WIRING SYSTEMS, LTD.
Application year: 1993
Main classification: H01R13
IPC codes: B60R16, H01R13