JP4013105B2 - connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector having a fitting detection function.
[0002]
[Prior art]
Conventionally, as an example of a connector having a function of detecting a fitting state of male and female housings fitted to each other, a connector described in JP-A-3-280370 has been known. As shown in FIG. 13, the connector includes a female housing 2 provided with a lock arm 3, of the male and female housings 1, 2. The detection member 4 engages the detection arm 5 with the lock arm 3 from the rear. When the housings 1 and 2 are fitted together, the lock arm 3 and the detection arm 4 are interlocked and bent downward, and the housings 1 and 2 are properly fitted. Then, only the lock arm 3 returns and is locked to the lock portion 6 of the male housing 1. When the detection member 4 is pushed forward during the fitting, the movement of the detection arm 5 is restricted by engaging the lock arm 3 which is bent together. When the detection member 4 is pushed in after the normal fitting, the detection arm 5 that remains bent with respect to the returned lock arm 3 is non-interfering, so that the detection member 4 moves to the final locking position. Is acceptable. That is, the fitting state of both the housings 1 and 2 is detected based on whether or not the detection member 4 can be pushed.
[0003]
[Problems to be solved by the invention]
In the connector described above, only the lock arm 3 has a function of holding both the housings 1 and 2 in the fitted state. Therefore, if the lock arm 3 is damaged due to a foreign object hitting it, the housings 1 and 2 may not be held in a properly fitted state. Further, since the detection member 4 is held at the main locking position by the detection arm 5 being engaged with the front end side of the lock arm 3 (see FIG. 13D), when the lock arm 3 is broken. May not be able to hold the detection member 4 in the final locking position.
The present invention has been completed based on the above circumstances, and an object of the present invention is to reliably hold both connector housings in a fitted state having a half-fitting prevention function.
[0004]
[Means for Solving the Problems]
  As means for achieving the above object, the invention of claim 1 is characterized in that, among the pair of connector housings that can be fitted to each other, the first connector housing is provided with a lock portion, and the second connector housing is provided with: When both connector housings are in the middle of mating, they are elastically displaced in a direction that intersects the mating direction of both connector housings, and when they are properly mated, they are elastically restored and locked to the locking portion and the two connector housings are A lock arm that can be held in a fitted state is provided.The first connector housingIn this case, the connector housing can be displaced in a direction parallel to the fitting direction of both connector housings from the temporary locking position to the final locking position, and the lock arm is elastically restored and locked to the lock portion. In the state where the lock arm does not interfere with the lock arm, a displacement operation from the temporary lock position to the main lock position is allowed, and in the state where the lock arm is elastically displaced, the temporary lock A detection member capable of detecting that the two connector housings are in the process of being engaged by interfering with the lock arm while being moved from the position to the final locking position. When moved to the main locking position, the detection memberThe first connector housing isEngagement with the detection member and relative displacement in the disengagement direction are restricted, and the detection member;Said second connector housingAnd provided with locking means that can be locked to each other as the detection member is moved to the main locking position.In addition, a guide wall for assembling the detection member is formed in the first connector housing, and the guide walls are connected to the rear end portions of the upper and lower surfaces of the first connector housing with a predetermined space therebetween. A top wall and a bottom wall, and a side wall facing the one side surface of the first connector housing with a predetermined distance and connecting the top wall and the bottom wall,
The detection member has an upper plate portion and a lower plate portion that are in sliding contact with the upper surface wall, the lower surface wall, and the side wall, respectively, and rattles in the vertical and horizontal directions with respect to the first connector housing. The locking portion is disposed on the upper surface of the first connector housing, and the locking means on the first connector housing side is disposed on the lower surface of the connector housing, and When the detection member is moved to the main locking position side when both connector housings are in the middle of fitting, the detection member has the upper plate abutted against the front end of the lock arm and the lower When the locking means on the detection member side formed on the plate portion abuts on the locking means on the second connector housing side, the second connector housing is moved to the first connector. And it is configured so as to be separated from Kuta housingHowever, it has characteristics.
[0005]
  The invention of claim 2 is the one described in claim 1, whereinWhen the detection member is disposed at the temporary locking position, the detection member protrudes from the outer surface of the connector housing assembled with the detection member, and when the detection member is disposed at the final locking position, the outer surface of the detection member is the detection member. The connector housing is assembled with the outer surface of the connector housing.However, it has characteristics.
[0007]
[Action and effect of the invention]
  <Invention of Claim 1>
  If the detection member is moved from the temporary locking position to the final locking position when both the connector housings are being fitted, it is detected that the detection member is half-fitted by interfering with the elastically displaced lock arm. The When both the connector housings are properly fitted, the lock arm is elastically restored and is locked to the lock portion so that the two connector housings are held in the normal fitted state. If the detection member is moved from the temporary locking position in this state, it is moved to the final locking position without interfering with the elastically restored lock arm. When the detection member reaches the final locking position, the detection member engages with the assembled connector housing to restrict relative displacement in the direction of detachment of the connector housing, and is provided on the mating connector housing and detection member. The locking means are locked together. Therefore, both the connector housings are locked at two different locations by locking the lock arm and the lock portion and locking the locking means. As a result, even if either the lock arm or the lock part or the lock means is damaged and the lock function cannot be performed, the other lock means securely holds both connector housings in the properly fitted state. can do. In addition, the lock member restricts the detection member from being displaced from the final locking position to the temporary locking position.
  Further, by arranging the two lock portions at positions opposite to each other, the fitting state of both connector housings can be stabilized.
[0009]
  <Claim 2Invention>
  Depending on whether or not the detection member protrudes from the assembled connector housing, the position of the detection member can be easily confirmed visually. Thereby, since the detection member can be reliably moved to the final locking position, the lock means can be reliably functioned.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, of the first connector housing 10 (hereinafter simply referred to as the first housing 10) and the second connector housing 20 (hereinafter simply referred to as the second housing 20) that can be fitted to each other, While the lock arm 23 is provided, the lock projection 11 that can be locked to the lock arm 23 is provided on the first housing 10 side, and the detection member 30 can be assembled. In the following, the fitting surface side of both housings 10 and 20 is referred to as the front, and the description on the left and right is based on FIGS. 1, 2, 4, and 5.
[0011]
The first housing 10 is made of synthetic resin, and a plurality of chambers (four chambers in the present embodiment) are formed in the interior thereof so as to penetrate in the front-rear direction. A first terminal fitting 17 is inserted. The first terminal fitting 17 is a so-called female terminal fitting, and a faston type connecting portion 17A is formed at a front end portion thereof by raising a pair of left and right arc-shaped contact pieces from the bottom wall. An electric wire W is connected to the rear end portion of the first terminal fitting 17 by crimping, and the electric wire W extends rearward from the rear end surface 10R of the first housing 10. On the upper surface of the first housing 10 shown in the figure, there is provided a lock projection 11 having a substantially right triangle shape when viewed from the side. The lock protrusion 11 has a front end surface formed as an inclined surface 11A that rises rearward, and a rear end surface that serves as a locking surface 11B orthogonal to the fitting direction.
[0012]
A guide wall 12 for assembling the detection member 30 is formed in the first housing 10. The guide wall 12 corresponds to the rear end portions of the upper and lower surfaces of the first housing 10 and the entire left side surface of the first housing 10 with a predetermined interval (a space for allowing the detection member 30 to enter). It is arranged in. The guide wall 12 is connected to the upper and lower surfaces of the first housing 10 by the support portions 13A and 13B at the right end portions of the upper surface wall 12A and the lower surface wall 12B, respectively, and excludes the upper and lower end portions of the side wall 12C. The left end portion is connected to the left side surface of the first housing 10 by the support portion 13C. Accordingly, between the guide wall 12 and the first housing 10, there is a pair of upper and lower insertion grooves 14 that are cut substantially horizontally along the upper and lower surfaces of the first housing 10 and the left end portion is cut into a curved shape. It is formed (see FIG. 4).
[0013]
About the arrangement position in the fitting direction of the support portion 13C coupled to the side wall 12C, the support portion 13C is disposed at a position ahead of the rear end surfaces 10R and 12R of the first housing 10 and the guide wall 12 by a predetermined dimension. A space formed between the rear end surfaces 10R, 12R of the first housing 10 and the guide wall 12 and the support portion 13C is an accommodation space 15 for accommodating a part of the detection member 30. The length dimension of the accommodation space 15, that is, the distance between the rear end surface 13 CR of the support portion 13 C and the rear end surfaces 10 R, 12 R of the first housing 10 and the guide wall 12 is the thickness dimension of the columnar portion 31 of the detection member 30. It has been minutes. Further, the upper and lower end portions of the support portion 13 </ b> C serve as temporary locking portions 16 that can restrict the detection member 30 from falling backward with respect to the first housing 10.
[0014]
From the support portion 13A connected to the upper surface wall 12A, a restricting portion 18A is formed so as to protrude inward, and this restricting portion 18A is connected to the upper surface wall 12A. On the other hand, from the support part 13B connected to the lower wall 12B, a restricting part 18B is formed so as to protrude inside. The restricting portion 18B is connected to the lower surface wall 12B and the first housing 10, and its lower end portion is formed to extend over almost the entire width of the inner surface of the lower surface wall 12B. The rear end surfaces of these restricting portions 18A and 18B are formed flush with the rear end surface 13CR of the support portion 13C connected to the side wall 12C.
[0015]
The detection member 30 is made of synthetic resin, and includes a columnar portion 31 extending in the vertical direction, extending portions 32A and 32B extending rightward from both upper and lower ends of the columnar portion 31, and an upper extending portion 32A. It consists of an upper plate part 33A extending forward and a lower plate part 33B extending forward from the lower extension part 32B, and the left side edge of the upper plate part 33A and the lower plate part 33B (the columnar part 31 side). Side edges) are curved portions 34A and 34B. The detection member 30 is assembled to the first housing 10 by inserting the upper plate portion 33A and the lower plate portion 33B from the rear into the upper and lower insertion grooves 14 between the first housing 10 and the guide wall 12. . In the assembled state, the upper plate portion 33A and the lower plate portion 33B are in sliding contact with the upper surface wall 12A and the lower surface wall 12B of the guide wall 12, respectively, and the curved portions 34A, 34B are in sliding contact with the side wall 12C, thereby detecting members. 30 is tentatively engaged with the first housing 10 in a direction parallel to the fitting direction of the two housings 10 and 20 without causing rattling in the vertical and horizontal directions (direction perpendicular to the fitting direction). It can be displaced between the stop position and the main locking position.
[0016]
In the state in which the detection member 30 is disposed at the temporary locking position, as shown in FIG. 8, the columnar portion 31 and the upper and lower extension portions 32A and 32B of the detection member 30 are the rear end surfaces of the first housing 10 and the guide wall 12. 10R and 12R are projected rearward, and the elastic locking pieces 35 formed on the upper plate portion 33A and the lower plate portion 33B are locked to the temporary locking portion 16 of the guide wall 12 from the front, whereby the detection member 30 is prevented from coming off from the first housing 10. In the state in which the detection member 30 is arranged at the final locking position, the columnar portion 31 and the upper and lower extension portions 32A and 32B of the detection member 30 are accommodated in the accommodation space 15, as shown in FIG. The rear end surface 30R is flush with the rear end surfaces 10R, 12R of the first housing 10 and the guide wall 12. At this time, the front end surface 31F of the columnar portion 31 is brought into contact with the rear end surface 13CR of the support portion 13C, and the front end surfaces of the upper and lower extension portions 32A and 32B are brought into contact with the rear end surfaces of the restricting portions 18A and 18B. The Further, in the final locking position, the front end portion of the upper plate portion 33 </ b> A is positioned almost directly above the lock protrusion 11.
[0017]
By the way, the lower plate portion 33B is provided with a cantilevered holding arm 36. The holding arm 36 is moved as the detection member 30 is moved from the temporary locking position to the final locking position. The first housing 10 is engaged with the holding portion 25 on the second housing 20 side in a state of being fitted. Specifically, the holding arm 36 is formed to extend along the fitting direction, and is disposed at a position on the right side from the center in the width direction of the lower plate portion 33B. 11 (or a lock arm 23 to be described later) is disposed at a position with an angular interval of approximately 180 °. The holding arm 36 can be elastically deformed downward (in a direction intersecting with the fitting direction), and a flange portion 37 is formed to protrude upward on the upper surface of the free end portion (front end portion). Yes. When the holding arm 36 is in a natural state, the collar portion 37 is arranged at a height position that overlaps with the holding portion 25 of the second housing 20 in a state of being fitted to the first housing 10. The flange portion 37 can enter a locking hole 26 that is opened in the holding portion 25, and the rear end surface 37 </ b> B (locking surface 37 </ b> B) of the flange portion 37 is locked to the hole edge of the locking hole 26. It has come to be. The front end surface 37A of the flange portion 37 is formed in a gently tapered shape, while the rear end surface 37B is formed in a tapered shape having a slightly larger inclination angle than the front end surface 37A. Further, the inclination angles of the front end surface 37 </ b> A and the rear end surface 37 </ b> B of the flange portion 37 are set to be smaller than the inclination angle of the inclined surface 11 </ b> A of the lock protrusion 11.
[0018]
The second housing 20 is made of synthetic resin and includes a hood portion 21 that protrudes forward. The hood portion 21 can be fitted over the entire circumference of the first housing 10, and extends along the inner surfaces of the upper plate portion 33 </ b> A and the lower plate portion 33 </ b> B of the detection member 30. In the hood part 21, the 2nd terminal metal fitting 22 protrudes and is arrange | positioned in the position corresponding to the 1st terminal metal fitting 17, and both housings 10 and 20 are fitted by this 2nd terminal metal fitting 22. As shown in FIG. Accordingly, the first terminal fitting 17 is elastically inserted between the bottom wall of the connecting portion 17A of the first terminal fitting 17 and the arcuate portion, whereby both the terminal fittings 17 and 22 are connected. Of the peripheral wall constituting the hood portion 21, the upper surface portion 21 </ b> A extends in a cantilevered manner toward the front, that is, parallel to the fitting direction of the second housing 20 with respect to the first housing 10. A lock arm 23 in which a stop hole 24 is formed is formed. The lock arm 23 can be elastically deformed so that its extended end 23A (front end) is displaced upward (in a direction crossing the fitting direction). On the other hand, a cantilevered holding portion 25 having a symmetrical shape with the lock arm 23 is provided on the lower surface portion 21 </ b> B of the peripheral wall of the hood portion 21. The holding portion 25 is provided with an engaging hole 26 that allows the hook portion 37 of the holding arm 36 of the detection member 30 to enter and the rear end surface 37B of the detecting member 30 to be locked.
[0019]
The present embodiment has the above-described structure, and the operation thereof will be described subsequently. When the two housings 10 and 20 are fitted together, the detection member 30 is made to wait in advance at the temporary locking position, and the hood portion 21 of the second housing 20 is fitted onto the first housing 10 in this state. While the two housings 10 and 20 are fitted, the lock arm 23 is elastically deformed upward while sliding the front end thereof onto the inclined surface 11A of the lock projection 11 (see FIG. 6).
[0020]
When the fitting operation of both the housings 10 and 20 is finished in such a half-fitted state, and the detection member 30 at the temporary locking position is pushed forward (the final locking position side) in the state as it is, the lock protrusion 11, the front end portion 23A of the lock arm 23 that is elastically deformed by climbing onto the upper surface of the lock arm 23 is substantially the same height as the upper plate portion 33A of the detection member 30. Therefore, as shown in FIG. The upper plate portion 33A hits the front end portion 23A of the lock arm 23 before reaching the stop position. At this time, the operator can recognize that the two housings 10 and 20 are in a semi-fitted state by perceiving the contact.
[0021]
When the detection member 30 is pushed further forward (to the main locking position side) from this state, the upper plate portion 33A of the detection member 30 pushes back the lock arm 23, so that the second housing 20 is separated from the first housing 10. When the detection member 30 reaches the final locking position, the front end portion 23A of the lock arm 23 is returned to the front side of the lock projection 11 as shown in FIG. At this time, the 1st terminal metal fitting 17 and the 2nd terminal metal fitting 22 are separated, and will be in a non-contact state. When the upper plate portion 33 </ b> A of the detection member 30 hits the lock arm 23, the tip of the holding arm 36 of the lower plate portion 33 </ b> B of the detection member 30 also hits the tip of the holding portion 25 at the lower end of the second housing 20. Since 30 is pushed against the second housing 20 at two upper and lower positions, no inclination occurs between the detection member 30 and the second housing 20.
[0022]
When the two housings 10 and 20 are brought into the connected state while the two housings 10 and 20 are fitted to the normal depth without being held in the half-fitted state, the front end portion 23A of the lock arm 23 is locked to the lock projection 11. 8, the lock arm 23 is elastically restored, and as shown in FIG. 8, the front end edge of the locking hole 24 of the lock arm 23 is locked to the locking surface 11 </ b> B of the lock protrusion 11 from the rear, As a result, both the housings 10 and 20 are locked in the normal fitting state, and the separation is restricted. Further, since the front end 10F of the first housing 10 abuts against the back end surface 21C of the hood portion 21, relative displacement in the further fitting direction of both the housings 10 and 20 is restricted. Note that the elastically returning lock arm 23 does not interfere with the upper plate portion 33A of the detection member 30 waiting at the temporary locking position. Further, although the front end of the holding portion 25 of the second housing 20 and the holding arm 36 of the detection member 30 are close to each other, they are in a non-contact and non-interference state.
[0023]
After the housings 10 and 20 are properly fitted, when the detection member 30 at the temporary locking position is pushed forward (to the main locking position side), the upper plate portion 33A passes over the lock arm 23 and the lock projection 11. Thus, it is allowed to move to the final locking position without interference. While the detection member 30 is moved toward the final locking position, the holding arm 36 abuts against the tip of the holding portion 25. At this time, since the lock arm 23 is locked to the lock projection 11 and the backward displacement of the second housing 20 with respect to the first housing 10 is restricted, the holding arm 36 moves forward relative to the holding portion 25. As a result, the pushing force against the detection member 30 acts on the holding arm 36 and the holding arm 36 is elastically deformed downward, and the collar portion 37 is displaced so as to sink under the holding portion 25.
[0024]
When the detection member 30 reaches the final locking position, as shown in FIG. 9, the flange 37 enters the locking hole 26 and the holding arm 36 is elastically restored to lock the rear end surface 37 </ b> B of the flange 37. The hole 26 is locked to the front edge of the hole 26 from behind. As a result, the detection member 30 is restricted from moving backward relative to the second housing 20. At this time, the front end surface 31F of the columnar portion 31 is in contact with the rear end surface 13CR of the support portion 13C, and the front end surface of the right end portion of the upper extension portion 32A is in contact with the rear end surface of the restricting portion 18A. Further, the first housing 10 is displaced backward relative to the detection member 30 by the front end surfaces of the right end portion and the lower end portion of the lower extension portion 32B being in contact with the rear end surface of the restricting portion 18B. This is restricted (see FIGS. 4 and 5). Accordingly, the first housing 10 is restricted from moving backward with respect to the second housing 20. As described above, the holding arm 36 is locked to the holding portion 25, so that the housings 10 and 20 are restricted from being displaced from the normal fitted state in the disengagement direction, and the detection member 30 is moved to the main locking position. The relative displacement in the fitting direction with respect to both the housings 10 and 20 is restricted.
[0025]
As described above, the housings 10 and 20 are spaced apart from each other by an angular interval of approximately 180 ° by the lock arm 23 being locked to the lock protrusion 11 and the holding arm 36 being locked to the holding portion 25. Therefore, the fitting state is stable.
[0026]
Further, when the detection member 30 reaches the final locking position, the rear end surface 30R becomes flush with the rear end surfaces 10R, 12R of the first housing 10 and the guide wall 12, so that in the process of pushing the detection member 30 in, By confirming visually whether the detection member 30 protrudes from the rear end surfaces 10R and 12R of the first housing 10 and the guide wall 12 or is flush with the rear end surfaces 10R and 12R, it is ensured. The detection member 30 can be pushed to the final locking position. Thereby, the holding arm 36 can be reliably latched to the holding part 25, and both the housings 10 and 20 can be reliably brought into a double-locked state. Further, since the upper plate portion 33A of the detection member 30 that has reached the main locking position is disposed so as to overlap the front end portion 23A of the lock arm 23 and the upper surface of the lock projection 11, the lock arm 23 is locked. The upward displacement that dissociates from the portion 11 is restricted, and the reliability of the lock function by the locking of the lock arm 23 and the lock projection 11 is increased.
[0027]
By the way, in the state where both the housings 10 and 20 are properly fitted as described above and the detection member 30 is disposed at the main locking position, the lock arm 23 or the lock projection 11 may be in contact with foreign matter. Even when the locking function cannot be performed due to damage, the housings 10 and 20 are restricted from being released from the normal fitting state by the holding arm 36 being locked to the holding portion 25. In addition, the detection member 30 is also prevented from being displaced from the main locking position in the fitting direction, and is prevented from coming off. On the other hand, when the holding arm 36 or the holding portion 25 is damaged and cannot perform its locking function, the lock arm 23 is locked to the lock protrusion 11 so that both housings 10 and 20 are properly fitted. It is restricted from leaving the combined state. That is, even when the lock function of either the lock arm 23 and the lock protrusion 11 or the holding arm 36 and the holding portion 25 can no longer be achieved, the housings 10 and 20 can be reliably maintained in a properly fitted state. .
[0028]
<Modification>
As a modification of the first embodiment described above, as shown in FIG. 10, the rear end surface 37B (locking surface 37B) of the collar portion 37 of the holding arm 36 is formed as an upright end surface orthogonal to the fitting direction. You may make it do. In this way, the same locking force as that of the lock arm 23 and the lock protrusion 11 can be exhibited. Further, if the rear end surface 37B of the flange portion 37 is formed in an overhang shape, it is possible to further increase the locking force.
[0029]
Second Embodiment
A second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the connector of the first embodiment is provided with means for restricting the detection member 30 in the temporary locking position from freely moving to the final locking position. Since the other configuration is the same as that of the first embodiment, the same reference numeral is given to the same configuration, and the description of the structure, operation, and effect is omitted.
[0030]
On the inner surface of the side wall 12C of the guide wall 12, a push-in restricting projection 19 is formed slightly behind the support portion 13C, and the columnar portion 31 of the detection member 30 is cantilevered forward. A push-in restricting arm 38 is formed to extend in the direction. When the detection member 30 is in the temporary locking position, as shown in FIG. 12, the front end of the push-in restricting arm 38 is locked from the rear with respect to the push-in restricting projection 19. It is restricted that the detection member 30 is allowed to move toward the final locking position. In addition, if a pressing force greater than a predetermined value is applied to the detection member 30 from this state, the pressing restriction arm 38 is elastically bent inward and dissociated from the pressing restriction protrusion 19, thereby releasing the restriction state. After that, if the detection member 30 is pushed forward as it is, it can be displaced to the full locking position.
[0031]
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In the above-described embodiment, the case where the holding arm and the holding part are arranged at a position spaced apart from the lock arm and the lock protrusion by an angle of about 180 ° is shown. The installation position can be set arbitrarily.
[0032]
(2) In the above-described embodiment, the case where the detection member is assembled on the first housing side not provided with the lock arm has been described. However, the detection member may be assembled on the second housing side provided with the lock arm. Such a thing is also included in the present invention.
(3) In the embodiment described above, the female terminal fitting is attached to the first housing and the male terminal fitting is attached to the second housing. However, the present invention provides a male terminal fitting to the first housing. It is also possible to apply to a case in which a female terminal fitting is attached to the second housing.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first housing and a detection member according to a first embodiment of the present invention.
FIG. 2 is a perspective view of a first housing and a second housing assembled with a detection member.
3 is a perspective view of the second housing as viewed from the opposite side to FIG. 2. FIG.
FIG. 4 is a front view of the first housing.
FIG. 5 is a front view of a detection member.
FIG. 6 is a sectional view showing a state where the lock arm and the detection member interfere with each other when both housings are half-fitted.
FIG. 7 is a cross-sectional view showing a state in which the second housing is pushed back as the detection member is displaced to the main locking position when both housings are half-fitted.
FIG. 8 is a cross-sectional view of a state in which a detection member is waiting in a temporary locking position and both housings are properly fitted.
FIG. 9 is a cross-sectional view of a state in which the detection member is displaced to the final locking position with both housings properly fitted.
FIG. 10 is a sectional view showing a modification of the first embodiment.
FIG. 11 is a perspective view of a first housing and a detection member according to a second embodiment of the present invention.
FIG. 12 is a cross-sectional view showing a state in which the detection member is held at the temporary locking position.
FIG. 13 is a sectional view of a conventional example.
[Explanation of symbols]
10 ... 1st housing (1st connector housing, the connector housing which attached the detection member)
10R ... Rear end surface (outer surface)
11 ... Lock protrusion (lock part)
20 ... 2nd housing (2nd connector housing, the connector housing of the other party of the connector housing which assembled | attached the detection member)
23 ... Lock arm
25. Holding part (locking means)
30 ... Detection member
30R ... Rear end surface (outer surface)
36 ... Holding arm (locking means)

Claims (2)

Of the pair of connector housings that can be fitted to each other, the first connector housing is provided with a lock portion, and the second connector housing has a fitting direction of both connector housings when both the connector housings are being fitted. There is provided a lock arm that is elastically displaced in an intersecting direction and is elastically restored upon normal fitting and is locked to the lock portion and can hold both the connector housings in a normal fitting state . The connector housing can be displaced in a direction parallel to the fitting direction of both connector housings from the temporary locking position to the final locking position, and the lock arm is elastically restored and locked to the lock portion. In this state, the displacement operation from the temporary locking position to the main locking position is allowed by non-interference with the lock arm, and the lock arm In a state in which the connector housing is elastically displaced, it is possible to detect that both the connector housings are being fitted by interfering with the lock arm while being moved from the temporary locking position to the final locking position. In what the member is assembled,
When the detection member is moved to the main locking position, the detection member is restricted from being relatively displaced in the disengagement direction by the first connector housing being engaged with the detection member. The detection member and the second connector housing are provided with locking means that can be locked to each other as the detection member is moved to the main locking position.
In addition, a guide wall for assembling the detection member is formed in the first connector housing, and the guide walls are connected to the rear end portions of the upper and lower surfaces of the first connector housing with a predetermined space therebetween. A top wall and a bottom wall, and a side wall facing the one side surface of the first connector housing with a predetermined distance and connecting the top wall and the bottom wall,
The detection member has an upper plate portion and a lower plate portion that are in sliding contact with the upper surface wall, the lower surface wall, and the side wall, respectively, and rattles in the vertical and horizontal directions with respect to the first connector housing. It can be displaced without occurring,
Further, the locking portion is disposed on the upper surface of the first connector housing, but the locking means on the first connector housing side is disposed on the lower surface of the connector housing, and the two connector housings are in the middle of fitting. When the detection member is moved to the main locking position side at a certain time, the detection member side of the detection plate formed on the lower plate portion is brought into contact with the front plate of the lock arm. The connector characterized in that the second connector housing is separated from the first connector housing when the locking means abuts against the locking means on the second connector housing side .   When the detection member is disposed at the temporary locking position, the detection member protrudes from the outer surface of the connector housing assembled with the detection member, and when the detection member is disposed at the final locking position, the outer surface of the detection member is the detection member. The connector according to claim 1, wherein the connector is configured to be flush with the outer surface of the connector housing assembled with the connector.

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