Electric connector

Abstract: An electric connecter (51) including a slider (55) for confirming locked condition universally mounted on the male connector housing (53) which allows it to move to be slid between a temporal locking position and a real locking position, when both connector housings are of the non-complete fitting condition, the slider comes into contact to be fitted with the locking arm (67) so that movement from the temporal locking position to the real locking position is prevented, while when both connector housings (50,57) are of the complete engagement condition, movement from the temporal locking position to the real locking position is permitted, and for preventing a resilient deformation of the locking arm (67) fitted with fitting section (79) at a real locking position, a locking crow (109) provided at the slider for confirming real locking, and an opposite fitting section (79) to be fitted with which the locking crow comes into contact to be slid, when the slider moves from the temporal locking position to the real locking position, and the opposite fitting section (79) fits with the locking crow (109) at the real locking position for being to be confirmed a termination of the movement toward the real locking position, since the locking crow fits with the opposite fitting position, the slider (55) does not move to the temporal locking position with unpreparedness.

Description: BACKGROUND OF THE INVENTION The present invention relates to an electric connector in which a locking arm and a corresponding fitting section thereto are provided at a female connector housing and a male connector housing respectively, and an engagement of the locking arm with the fitting section would make locked condition between the female connector housing and the male connector housing. FIGs. 1 to 3 show an electric connector 1 described in the Japanese Patent Application Laid-Open No. 3-285280. The electric connector 1 which is formed as a waterproof connecter comprises a male type connector 3, a female type connector 5, and a lock-confirming slider 31. A waterproof hood 13 which surrounds a hood 11 of a female connector housing of the female type connector 5 is provided in front of an outer peripheral portion of a male connector housing 7 of the male type connector 3. A notch 15 is provided at an upper portion of an outer peripheral wall of the waterproof hood 13, and a locking arm 17 is provided through a support 19, fronting onto the notch 15. The lock-confirming slider 31 consists of a slider body 37 and a lock-confirming arm 39. The lock-confirming arm 39 is slightly inclined upward, and a stopper 41 is projected on the undersurface of a free end portion thereof, and a supporting guide 43 is projected in front thereof. When the male connector housing 7 is engaged with the female connector housing 9, a fitting projection 23 of the locking arm 17 climbs over (referring to FIG. 2) a prohibiting-return member 35 formed on the hood 11 of the female connector housing 9, before the locking arm 17 is warped upward. When advancing the further engagement, the locking arm 17 returns elastically downward, before the locking arm is locked due to the engagement between the locking projection 23 and the prohibiting-return member 35. The lock-confirming arm 39 is warped upward because the stopper 41 and the supporting guide 43 are engaged with the locking projection 23. When the engagement therebetween is released, since the obstacle of the stopper 41 is eased, the lock-confirming arm 39 advances through the passage 27 (referring to FIG. 3) with the result that the lock-confirming slider 31 arrives at the lock-confirming position. In this electric connector, the lock-confirming slider 31 first operates when the engagement and the locking between the female connector housing 9 and the male connector housing 7 are completely implemented, before the engagement of the locking arm 17 with the lock-confirming arm 39 is released. Consequently, the confirmation of the complete implementation for the locking is capable of being achieved. However, in the above-described electric connector, even if the lock-confirming slider 31 arrives at the lock-confirming section, the lock-confirming arm 39 only returns the initial position due to the elastic power for itself. The confirmation whether or not the lock-confirming slider 31 certainly arrives at the lock-confirming position is implemented in such a way that whether or not there feels the touch of the returning of the lock-confirming arm 39. For this reason, in order to certainly detect the lock-confirming slider 31 arriving at the lock-confirming position, it is necessary to perform the pulling operation of the lock-confirming slider 31 whether or not the stopper 41 can be caught by the locking projection 23, with the result that the operation for confirming locking state is the time-consuming job. SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide an electric connector in which it can easily be confirmed whether or not a slider is certainly arrived at a lock-confirming position (real locking position), and a lock-confirming operation becomes facile. An electric connector with such properties is disclosed in US-A-4 946 395. According to one aspect of the present invention, for achieving the above-mentioned object, there is provided an electric connector in accordance with claim 1 and claim 2. Objects and novel features of the invention will be more fully understood from the following detailed description when the same is read in connection with the accompanying drawings. It should be expressly understood, however, that the drawings are for purpose of illustration only and are not intended as a definition of the limits of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a conventional electric connector; FIG. 2 is a cross sectional view showing a condition causing a slider to move toward the position for confirming locking state in the conventional electric connector; FIG. 3 is a cross sectional view showing a condition where the slider has been moved at the lock-confirming position for confirming locked condition in the conventional electric connector; FIG. 4 is an exploded perspective view showing a male type connector and a slider of the electric connector according to the present invention; FIG. 5 is a perspective view showing a condition that the slider is mounted on the male type connector of the electric connector according to the present invention; FIG. 6 is a perspective view showing the lock-confirming slider; FIG. 7 is a cross sectional view showing a condition that the male type connector housing is started to be inserted into engaging hood of the female type connector in the electric connector; FIG. 8 is a cross sectional view showing a condition that the male type connector housing is inserted completely into the engaging hood of the female type connector of the electric connector; FIG. 9 is a cross sectional view showing a condition during movement of the slider from the temporal locking position to real locking position with the condition that the male type connector housing is inserted completely into the engaging hood of the female connector; FIG. 10 is a cross sectional view showing a condition that the male type connector is engaged with the female type connector, before the slider is moved from the temporal locking, section to the real locking section; DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will now be described in detail referring to the accompanying drawings. FIG. 4 is an exploded perspective view showing a relation between a male connector 53 of an electric connector 51 and a lock-confirming slider 55, FIG. 5 is a perspective view showing that the lock-confirming slider 55 is arranged at the male connector 53, and FIG. 6 is a perspective view showing the lock-confirming slider 55. Further, FIGs. 7 to 10 are perspective views showing an engagement procedure between the male connector 53 of the electric connector 51 and the female connector 57. As shown in FIG. 7, The present embodiment of the electric connector 51 comprises the male type connector 53, the female type connector 57 with which the male type connector 53 is engaged, and the lock-confirming slider 55 for confirming locked condition in which the engagement condition between the male type connector 53 and the female type connector 55 has been maintained. As shown in FIGs. 4 and 5, the male type connector 53 comprises a waterproof hood 63, having designated space, is formed to be integrated with the outer periphery of the male connector housing 61 where a terminal receiving chamber 59 shaped as two columns of the upper and lower side sections is formed. A part of the outer peripheral wall 63a of the waterproof hood 63 is made open, and a mounting section 65 on which the slider 55 is mounted is formed. A locking arm 67 is provided at the mounting section 67. The locking arm 67 comprises a pair of flexible arm sections 71, 71 which are projected in the same direction as the locking arm 67 from the predetermined opening (locking hole) 69 which is opened at the outer peripheral wall 61a of the male connector housing 61, and a coupling section 73 (referring to FIG. 7) which couples the free end side sections of these arm sections 71, 71. The free end side sections of the arm sections 71, 71 are covered by the part of the waterproof hood 63. At a pointed end section of the coupling section 73, as shown in FIG. 7, an inclined surface 75 is formed. Further, an intermediate coupling section 77 which couples the pair of arm section 71, 71 is provided at the intermediate section of the arm sections 71, 71. An opposite projecting section 79 is formed across the pair of arm sections 71, 71 between the intermediate coupling section 77 and the coupling section 73. A section between the coupling section 73 and the opposite projecting section 79 is the locking hole 69. A locking crow 109 described later of the slider 55 comes into contact to be slid and fits with the opposite projecting section 79. The slider 55 is mounted on the mounting section 65 in the temporal locking condition in which a lock-detecting arm 95 of the slider 55 is inserted into the section between the pair of arm sections 71, 71 so that the lock-detecting arm 95 comes into contact to be fitted with the coupling section 73, and the male type connector 53 is engaged with the female connector 57. As shown in FIG. 7, an engaging hood 85 in which the male connector housing 61 is engaged is integrally formed with the female connector housing 83 on which a terminal receiving chamber 81 shaped as two columns of the upper and lower side sections is formed. An fitting section 87 into which the locking arm 67 is inserted is formed on the fitted hood 85. An fitting projection 89 is projected on the inside of the fitting section 87. An inclined surface 91 is formed on the fitting projection 89. As shown in FIG. 7, when the male type connector 53 engages with the female connector 57, an inclined plane 75 of the locking arm 67 moves to be slid in the inclind surface 91. The locking arm 67 is resiliently deformed toward the male connector housing 61 so that a relative movement between both connector housings 61, 83 is permitted. In the condition that the male type connector 53 is completely engaged with the female type connector 57, the coupling section 73 and the fitting projection 89 are so fitted that the coupling section 73 can climb over the fitting projection 89, result in locked condition. At this time, as shown in FIG. 8, the fitting projection 89 comes into contact with the upper section of the lock-detection arm 95 which comes into contact to be engaged with the coupling section 73 so that the fitting projection 89 pushes the lock-detection arm 95 out of the locking hole 69, with the result that it can be released the fitting condition between the lock-detection arm 95 and the coupling section 73. As shown in FIG. 6, the slider 55 comprises a slider body 93, and the lock-detection arm 95 projected from the slider body 93. L-shaped rail sections 99, 99 are integrally formed with both lower sections of the arch-shaped base section 97 respectively in the slider body 93. As shown in FIG. 5, these rail sections 99, 99 are movably fitted into the guide groove 101 provided at the outer peripheral wall 61a of the male connector housing 61 respectively. One end of the lock-detection arm 95 is integrally supported with roughly center section of the rail sections 99, 99. A column section 107 with a supporting guide 103 and a stopper 105 is formed at the pointed end section of the lock-detection-arm 95. As shown in FIG. 7, in the condition previous to the complete engagement of both connector housings 61, 83 where the slider is mounted on the mounting section 64 of the connector housing 61, the lock-detection arm is inserted into the section between the pair of arm sections 71, 71, and the stopper 105 comes into contact to be engaged with the coupling section 73, and movement toward the real locking position of the slider 55 is prevented. A locking claw 109 is projected at the section of the lock-detection arm 95 side, which is the inside section of the base section 97 in the slider 55. When the slider 55 moves toward the real locking position, the locking claw 109 comes into contact to be slid with the upper part of the opposite projecting section 79, and fits with the opposite fitting section 79 after terminating of movement toward the real locking position. At this case, the condition of engagement of the locking claw 109 with the opposite projecting section 79 can easily be confirmed in such a way that the locking claw 109 can climb over the opposite projecting section 79 so that the moderation-feeling is improved. Further, the condition in which the locking claw 109 has climbed over the opposite projecting section also can be confirmed visually. Next, by using FIGs. 7 to 10, the fitting procedure and lock-confirming operation between the male connector 53 and the female connector 57 will be described. As shown in FIG. 7, the slider 55 is mounted on the mounting section 65 of the male connector housing 61 ahead of time. At this case, the stopper 105 at the pointed end of the lock-detection arm 95 comes into contact with the coupling section 73 so that the slider 55 is mounted on the male connector housing 61 at the temporal locking position. At this condition, the male connector housing 61 is engaged with the engaging hood 85 of the female type connector 57, and the engaging hood 85 is engaged with the waterproof hood 63. In FIGs. 7 to 10, reference numeral 111 shows a member for implementing a halfway-insertion detection of the male terminal, and reference numeral 113 shows a seal member for sealing between the internal wall of the engaging hood 85 and the outer periphery of the male connector housing 61. When the male connector housing 61 is inserted into the engaging hood 85 of the female type connector 57, as shown in FIG. 7, the pointed end section of the locking arm 67 comes into contact with the fitting projection 89 so that the inclined face 75 slides on the inclined surface 91. When it makes the male connector housing 61 further insert into the engaging hood 85, as shown in FIG. 8, the locking arm 67 can climb over the fitting projection 89 with the locking arm 67 warped, so that it can be obtained the complete engagement condition with the fitting projection 89 inserted into the inside of the locking hole 69, and the fitting projection 89 comes into contact with the lock-detection arm 95, before the engaging projection 89 pushes the lock-detection arm 95 out of the locking hole 69, with the result that the fitting condition of the lock-detection arm 95 with the coupling section 73 is released. For this reason, the slider 55 becomes possible to move from the temporal locking position to the real locking position, when both connector housings 61, 83 are of the complete engagement condition. From this condition, As shown in FIG. 9, when it makes the slider 55 mounted on the temporal locking position move toward the female connector housing 83, the lock-detection arm 95 passes through between the coupling section 73 and the engaging hood 85, and the locking claw 109 comes into contact to be slid with the opposite projecting section 79. The locking claw 109 comes into contact to be slid with the opposite projecting section 79 so that the locking arm is slightly warped. Due to the amount of the warp, the engagement of the fitting projection 89 with the coupling projection 73 can not be released. Further, when it makes the slider 55 move toward the female connector housing 83, as shown in FIG. 10, the locking claw 109 climbs over the opposite projecting section 79 so that the locking claw engages with the opposite projecting section 79. At the same time, the lock-detection arm 95 is positioned at the side of the pointed end section of the coupling section 73. When it makes the slider 55 move from the temporal locking position to the real locking position, since the locking claw 109 comes into contact to be slid with the opposite projecting section 79, before the locking claw 109 climbs over the opposite projecting section 79, it is capable of being confirmed that the slider 55 has certainly moved at the real locking position due to improvement of the moderation-feeling. Further, it is capable of being confirmed that the slider 55 has certainly moved at the real locked position by confirming visually of inserting position for the slider 55. At the condition that the slider 55 has completely moved at the real locking position, as shown in FIG. 10, the fitting projection 89 fits with the inside of the locking hole 69 of the locking arm 67, with the result that the lock-detection arm 95 is positioned at the lower section of the locking arm 67, namely at the lower section of the coupling section 73. For this reason, the locked condition between the male type connector 53 and the female type connector 57 is certainly maintained. As stated above, according to the embodiment, when the slider 55 is moved from the temporal locking position to the real locking position, the locking claw 109 comes into contact to be slid with the opposite projecting section 79 of the locking arm 67, and when the movement of the slider 55 toward the real locking position is terminated, the locking claw 109 engages with the opposite projecting section 79 all of which is capable of being easily confirmed by the operator making the slider 55 move. Namely, when the slide-contact condition for the opposite projecting section 79 of the locking claw 109 is terminated, since the sliding resistance at movement of the slider 55 is decreased suddenly, the moderation-feeling is improved, with the result that it is capable of being easily confirmed that the slide-contact of the locking claw 109 to the opposite projecting section 79 is terminated. Further, at the condition that the slider 55 has moved at the real locking position, since the locking claw 109 fits with the fitted position, the slider 55 does not move to the temporal locking position with unpreparedness. Moreover, according to the embodiment, since the opposite projecting section 79 is provided at the locking arm 67, it is not necessary to form the opposite projecting section 79 by the elastic body. While preferred embodiments of the present invention have been described using specific terms, such description is for illustrative purpose only, and it is to be understood that changes and variations may be made without departing from the scope of the following claims.

Claims: An electric connector comprising: a male connector housing (61); a female connector housing (83); a flexible locking arm (67) provided at said male connector housing (61) and capable of being resiliently deformed during engagement between said male connector housing (61) and said female connector housing (83); said flexible locking arm (67) extending in the direction of movement of said housings (61, 83) as they close together and having a free end terminating in a coupling section (73) facing towards said female connector housing (83); a fitting projection (89) provided at said female connector housing (83) for interengaging with said coupling section (73) of said flexible locking arm (67) so as to achieve a locking condition when said male connector housing (61) is completely engaged with said female connector housing (83); said flexible locking arm (67) permitting said coupling section (73) to climb over said fitting projection (89) before locking with said fitting projection; and a slider (55) mounted on said male connector housing (61) and having an arm (95) extending in the direction of movement of said housings as they close together, characterized in that said arm (95) of the slider (55) is a lock detection-arm having a free end in the form of a stopper (105) facing towards said female connector housing (83); said slider (55) being capable of having a temporal locking position in which said stopper (105) abuts against said coupling section (73) of said flexible locking arm (67); the electrical connector being such that subsequent movement of the slider (55) towards the female connector housing (83) to a real locking position first causes said stopper (105) of said lock detection-arm (95) to force said coupling section (73) of said flexible locking arm (67) to climb over said fitting projection (89) of the female connector housing (83) and lock therewith and then causes said lock detection-arm (95) to move to a setting wherein it prevents said coupling section (73) from moving out of engagement with said fitting projection (89); and a projecting section (79) on said flexible locking arm (67) and a locking claw (109) on said slider (55), said locking claw (109) being capable of sliding over said projection section (79) on said flexible locking arm (67) as said housings are closed together and being such that when said male connector housing (61) is completely engaged with said female connector housing (83) said projecting section (79) on said flexible locking arm is in a locked-together state with said locking claw (109) on said slider (55). An electric connector as claimed in Claim 1 wherein said locking arm (67) comprises a pair of parallel spaced apart flexible arm sections (71, 71) projecting in the same direction from an outer peripheral wall (63a) of said male connector housing (61); there being a coupling section (73) coupling the free-end sections of said parallel arm sections (71, 71) so that when the slider (55) is moved towards the female connector housing (83) the stopper (105) of said lock-detection arm (95) comes into contact with said coupling section (73) to define said temporal locking position.

Inventors: IWAHORI YOSHIHIRO, UCHIDA YOSHINORI, IWAHORI, YOSHIHIRO, UCHIDA, YOSHINORI, IWAHORI, YOSHIHIRO, C/O YAZAKI PARTS CO., LTD., UCHIDA, YOSHINORI, C/O YAZAKI PARTS CO., LTD.
Applicants: YAZAKI CORP, YAZAKI CORPORATION
Application year: 1996
Main classification: H01R13
IPC codes: H01R13