JP2016015348A - Lock arm structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock arm structure in which concentration of stress at elastic deformation is avoided.SOLUTION: A connector comprises a housing 10, a wire cover 20, an operation lever 30, and a cam member 40. A lock part 223 is formed on an upper wall 222 of a dome part 22 of the wire cover 20. This lock part 223 is in a cantilevered shape by a pair of notches 223a at both sides. Here, at root parts of the notches 223a at both sides that form the lock part 223 in the cantilevered shape, circular holes 223b having a diameter larger than a width of the notches 223a are provided. Due to the formation of the circular holes 223b, concentration of stress at the time when the lock part 223 is deformed by an operation arm 30 or by being pressed by a finger is avoided.

Description

  The present invention relates to a lock arm structure of a connector.

  Non-Patent Document 1 discloses a connector including a connector housing from which a plurality of electric wires are drawn out, and a wire cover that covers the electric wire drawing surface with a space between the connector housings. The wire cover is formed with an electric wire outlet opening for taking out the electric wire to the outside.

  The connector includes a cam member that is slidably supported by the housing and an operation lever that is rotatably supported by the wire cover. When the operating lever is turned, the cam member slides. When the mating connector is fitted, the cam pin provided in the mating connector is received in the cam groove formed in the cam member, and when the operation lever is rotated, the cam pin is pulled into the back of the cam groove and the connectors are separated. Mating.

  In the connector having such a structure, as one of various demands, there is a demand for producing a harness (cable assembly) using a thicker electric wire than the conventional one using this connector. In order to meet this requirement, it is necessary to widen the wire outlet opening provided in the wire cover. However, when the electric wire extraction opening is widened, the operation lever is in a posture to overlap the electric wire extraction opening before fitting with the mating connector. For this reason, there exists a possibility that the electric wire taken out from the electric wire extraction opening may push the operation lever, and cannot maintain the correct posture before fitting. In such a case, the cam member may not be able to maintain the correct slide position before fitting, and may interfere with the mating connector.

  Here, Patent Documents 1 to 3 disclose a lever temporary locking structure by engagement between a temporary locking protrusion of a cover and a temporary locking hole of a lever. However, in any of the lever temporary locking structures of Patent Documents 1 to 3, the temporary locking protrusions are hemispherical. Although this allows the lever to be rotated with an appropriate operating force, the lever holding force tends to be insufficient when an external force from an electric wire or the like acts on the lever.

JP 2002-56934 A JP 2003-115356 A JP 2007-103200 A

Tyco Electronics Instruction Manual (IS) 411-78008-1

  An object of this invention is to provide the lock arm structure which avoided the stress concentration at the time of elastic deformation.

The lock arm structure that achieves the above objective is:
A lock arm structure that is formed in a cantilever shape by two incisions extending in parallel to each other and formed in a member constituting the connector, locks the mating member using elastic deformation, and releases the lock,
The base of each of the two cuts has a portion formed with a diameter larger than the width of the cut.

  Here, in the lock arm structure of the present invention, it is preferable that the portion formed with the large diameter is circular.

  According to the present invention described above, a lock arm structure that avoids stress concentration during elastic deformation is realized.

It is a connector provided with the lock arm structure of one Embodiment of this invention, Comprising: It is the external appearance perspective view which showed the state before the attachment to the other party connector. It is the same connector as FIG. 1, Comprising: It is the external appearance perspective view which showed the state after attaching to the other party connector. It is the perspective view which showed the connector (A) of the state shown in FIG. 1, and the other party connector (B) combined with the connector. It is the perspective view which showed this connector in the state (state shown in FIG. 2) assembled with the other party connector and the other party connector. It is the perspective view which showed the attitude | position of each operation step of the operation lever of a connector. It is a side view of this connector when an operation lever exists in a temporary latching state. It is each perspective view which changed and showed the attitude | position of the wire cover, and the expansion perspective view enclosed with the circle | round | yen respectively shown in each perspective view. It is a side view of a wire cover. It is the perspective view (A) which showed the wire cover and the operation lever in a section along arrow FF shown in FIG. 8 (A), and an enlarged view of a circle G portion in FIG. 9 (A). It is the perspective view (A) which showed the wire cover and the operation lever in the cross section along the arrow AA shown in FIG. 8 (B), and the enlarged view of the part of circle E in FIG. 10 (A).

  Embodiments of the present invention will be described below.

  1 and 2 are external perspective views of a connector having a lock arm structure according to an embodiment of the present invention. Here, FIG. 1 shows a state before attachment to the mating connector 2 (see FIGS. 3 and 4). FIG. 2 shows a state after being attached to the mating connector 2.

  A connector 1 as an embodiment shown in FIGS. 1 and 2 includes a housing 10, a wire cover 20, an operation lever 30, and two cam members 40. The cam member 40 protrudes from the housing 10 in a state before being attached to the mating connector 2 (see FIG. 1). On the other hand, the cam member 40 is housed in the housing 10 in a state after being attached to the mating connector 2 (see FIG. 2).

  A wire outlet opening 21 is formed in the wire cover 20. A plurality of electric wires 50 are taken out from the connector 1 through the electric wire outlet opening 21.

  The operation lever 30 is curved and extends so as to straddle the wire cover 20 and is pivotally supported on both sides of the wire cover. The operation lever 30 is rotatable between the temporary locking posture shown in FIG. 1 and the locking posture shown in FIG.

  When the operation lever 30 is rotated, the cam member 40 slides accordingly. Before the attachment to the mating connector 2, the operation lever 30 is rotated to the temporary locking posture shown in FIG. At this time, the cam member 40 slides in a state protruding from the housing 10. In this state, attachment to the mating connector 2 is started, and the operation lever 30 is rotated to the lock posture shown in FIG. Then, the cam member 40 slides so as to be housed in the housing 10. The connector 1 is attached to the mating connector 2 by sliding the cam member 40.

  FIG. 3 is a perspective view showing the connector (A) in the state shown in FIG. 1 and the mating connector (B) assembled with the connector. Here, in order to distinguish the connector ((FIG. 3A)) of the present embodiment from the mating connector (FIG. 3 (B)), it may be referred to as “the present connector”.

  FIG. 4 is a perspective view showing the mating connector and the main connector in a state assembled with the mating connector (the state shown in FIG. 2).

  In FIGS. 3 and 4 and subsequent figures, the electric wire 50 is omitted except for FIG.

  In the housing 10, a wire lead-out surface 112 is formed in the center portion in the width direction of the upper surface 11 facing the wire cover 20 side. The electric wire drawing surface 112 has a substantially rectangular shape. The wire drawing surface 112 is provided with a plurality of wire drawing ports 112a arranged in a two-dimensional manner.

  A total of a plurality of electric wires 50 (see FIGS. 1 and 2) are drawn out from each of the plurality of electric wire outlets 112a.

  The wire cover 20 is formed with a dome portion 22 and a pair of arm portions 23. The dome portion 22 extends from the longitudinal center portion of the wire lead-out surface 112 of the housing 10 to one end portion (the left end portion where the cam member 40 protrudes in FIG. 3). The dome portion 22 receives a plurality of electric wires 50 (see FIGS. 1 and 2) in a space 22 a formed between the electric wire drawing surface 112. Further, the pair of arm portions 23 extends from the dome portion 22 toward the other end portion (the right end portion in FIGS. 3 and 4) of the wire lead-out surface 112. The pair of arm portions 23 can be bent in a direction in which they come into contact with and away from each other. An electric wire extraction opening 21 is formed between the pair of arm portions 23. From the electric wire extraction opening 21, a plurality of electric wires 50 drawn out from a plurality of electric wire outlets 112a formed on the electric wire extraction surface 112 are gathered and taken out to the outside of the connector 1 (FIG. 1, FIG. 1). 2). The wire cover 20 is attached to the housing 10 as will be described later.

  As shown in FIG. 3 (B), the mating connector 2 is formed with cam pins 2a protruding vertically on the outer surface thereof. Correspondingly, cam grooves (not shown) are formed on the inner surfaces of the two cam members 40 of the connector 1 facing each other. These two cam members 40 are slidable with respect to the housing 10 between a protruding position shown in FIGS. 1 and 3A and a position entering the housing 10 shown in FIGS. It has become. These two cam members 40 are formed with racks (not shown). Correspondingly, a pinion gear 31 (see FIGS. 2 and 4) that meshes with the rack of the cam member 40 is located at the base of the operation lever 30 that enters the housing 10 through the opening 12 provided in the housing 10. ) Is formed. Further, the operation lever 30 is rotatably supported by a protrusion 241 provided on the wire cover 20 at a portion slightly above the portion that enters the housing 10 from the opening 12 of the housing 10. For this reason, by rotating the operation lever 30, the two cam members 40 protrude from the housing 10 shown in FIGS. 1 and 3A, and the housing 10 shown in FIGS. Slide in and out of the position.

  Here, as shown in FIG. 3A, the connector 1 is pressed against the mating connector 2 in a state where the operation lever 30 is in the temporarily locked posture. Then, the cam pin 2 a of the mating connector 2 enters a cam groove (not shown) provided in the cam member 40. Thereafter, the operation lever 30 is rotated to the lock posture shown in FIG. Then, by this cam mechanism, the connector 1 is fitted to the mating connector 2 to a proper position with a small force.

  3 and 4 show another mating connector 3 provided integrally with the mating connector 2. The mating connector 3 is a connector having a shorter dimension in the longitudinal direction than the mating connector 2 combined with the connector 1. That is, another type of connector having a longer dimension in the longitudinal direction than the main connector shown in FIGS. 1 and 2 is prepared as a connector on the main connector 1 side to be combined with the connector 3. However, the connector is different in that the size in the longitudinal direction is shorter than that of the main connector 1 shown in FIGS. 1 and 2 and the connector 1 is combined in a different direction. The different direction is a direction in which a cam member corresponding to the cam member 40 of the connector 1 protrudes from the housing in a direction opposite to the cam member 40 of the connector 1 shown in FIG. Due to the difference in direction, the cam groove formed in the cam member corresponding to the cam member 40 is also changed so as to be fitted by a movement opposite to the cam member 40. However, the characteristic part of the connector combined with the mating connector 3 is the same as the characteristic part of the connector 1 shown here. Therefore, illustration and further explanation of the connector on the side of the main connector 1 combined with the mating connector 3 are omitted.

  FIG. 5 is a perspective view showing the posture of each operation stage of the operation lever of the connector. FIG. 5A is a perspective view of the connector when the operation lever 30 is in a temporarily locked state. FIG. 5B is a perspective view of the connector when the operation lever 30 is in a posture in which the operation lever 30 is slightly rotated from the temporarily locked state to the locked state. FIG. 5C is a perspective view of the connector when the operation lever 30 is in the locked state.

  When the operation lever 30 is in the temporarily locked state shown in FIG. 5A, the cam member 40 is in a state of protruding from the housing 10. When the cam member 40 is in this state, the cam pin 2a provided in the mating connector 2 (see FIGS. 3 and 4) is received in a cam groove (not shown) formed in the cam member 40. Therefore, the operating lever 30 needs to be stably temporarily locked in the temporarily locked state shown in FIG.

  FIG. 6 is a side view of the connector when the operation lever is in a temporarily locked state. FIG. 6 shows a plurality of electric wires 50 as in FIGS. 1 and 2.

  In this connector 1, the wire cover 20 is attached after inserting contacts (not shown) terminating in the plurality of electric wires 50 into the electric wire outlet 112 of the housing 10. The operation lever 30 is assembled to the wire cover 20 at the time of assembly. When the connector 1 is fitted to the mating connector 2 (see FIGS. 3 and 4), the operation lever 30 is set in the temporarily locked state shown in FIG. Therefore, the operation lever 30 is in a state of pressing the electric wire 50, and the operation lever 30 receives a reaction force in the direction of the arrow R shown in FIG. At this time, suppose that the operating lever 30 is moved from the temporarily locked state to the posture shown in FIG. 5B, for example, by receiving the reaction force in the direction of the arrow R from the electric wire 50. In this case, with the movement of the operation lever 30, the cam member 40 also slides by a slide amount corresponding to the movement of the operation lever 30. Then, the position of the receiving port for receiving the cam pin 2a (see FIG. 3) of the mating connector 2 in the cam groove (not shown) formed in the cam member 40 is also shifted. As a result, the connector 1 and the mating connector 2 cannot be fitted. Therefore, in the present embodiment, the operation lever 30 in the temporarily locked state is held in the temporarily locked state against the reaction force from the electric wire 50 by a device described later.

  Returning to FIG.

  The connector 1 starts to be engaged with the mating connector 2 (see FIG. 3) in a state where the operation lever 30 is temporarily locked as shown in FIG. The cam pin 2a of the mating connector 2 is inserted into the cam groove (not shown) of the cam member 40, and in this state, the pair of arm portions 23 are gripped from both sides as indicated by arrows SS in FIG. The pair of arm portions 23 are bent so as to approach each other. Then, the temporary locking of the operation lever 30 is released, and the operation lever 30 can be rotated. In this manner, the operation lever 30 is rotated through the posture shown in FIG. 5B to the locked posture shown in FIG. The cam member 40 slides as the operation lever 30 is rotated. With the slide, the cam pin 2a (see FIG. 3) is drawn into the back of the cam groove (not shown). When the operation lever 30 rotates to the locked state shown in FIG. 5C, the cam member 40 is housed in the housing 10, and the cam pin 2a is in a state where the connector 1 and the mating connector 2 are completely fitted. It is drawn in to the back.

  A lock portion 223 is formed on the upper wall 222 of the dome portion 22 of the wire cover 20. The lock portion 223 has a cantilever shape by a pair of cuts 223a on both sides thereof. When the operation lever 30 is rotated toward the locked state, the operation lever 30 hits the tip of the lock portion 223 and elastically deforms the lock portion 223. Then, the operating lever 30 gets over the lock portion 223 and hits the protrusion 244, and enters the locked state shown in FIG. The lock portion 223 is not easily deformed in the reverse direction, and the operation lever 30 is locked (mainly locked) in a state sandwiched between the protrusion 244 and the lock portion 223. When the lock part 223 is pushed down, the operation arm 30 can pass through the lock part 223.

  Here, a circular hole 223b having a diameter larger than the width of the notch 223a is provided at the base of the notch 223a on both sides forming the lock portion 223 in a cantilever shape. Since the circular hole 223b is formed, stress concentration when the lock portion 223 is deformed by the operation arm 30 or by being pushed by a finger is avoided.

  On the upper surface 11 of the housing 10, a plurality of electric wire outlets 112 a are provided at the center in the width direction to form an electric wire extraction surface 112, and a groove 113 is formed around the electric wire extraction surface 112. The wire cover 20 is attached to the housing 10 such that both ends in the longitudinal direction enter the groove 113. An edge 111 is provided on the upper surface of the housing 10 around the groove 113.

  The pair of cam members 40 are housed in the edge portion 111 of the housing 10 so as to be slidable in the longitudinal direction. An opening 12 is formed in the edge 111. A rack (not shown) is formed in the cam member 40 at a position corresponding to the opening 12. When the wire cover 20 is attached to the housing 10 together with the operation arm 30, a portion of the lower portion of the operation lever 30 where the pinion gear 31 is formed enters the opening 12. Then, the pinion gear 31 meshes with the rack, and the cam member 40 slides according to the turning operation of the operation lever 30.

  The movement of the operating lever 30 when removing the main connector 1 fitted to the mating connector 2 from the mating connector 2 is opposite to the movement of fitting the main connector 1 to the mating connector 2 described above. It becomes the movement. When the connector 1 is fitted to the mating connector 2, the operation lever 30 is in the locked posture shown in FIG. When the lock portion 223 is pushed down to bend the lock portion 223, the lock of the operation lever 30 is released. Then, the operation lever 30 is rotated to the temporary locking state shown in FIG. When the operation lever 30 is rotated to the posture shown in FIG. 5B, the edge 30 a contacts the temporary locking protrusion 243. When the operation lever 30 is further rotated, the operation lever 30 rides on the temporary locking protrusion 243. The operation lever 30 can ride on the temporary locking protrusion 243 with a light operating force due to the shape of the temporary locking protrusion 243 described later. The surface of the operation lever 30 on the wire cover 20 side faces the temporary locking protrusion 243 when the operating lever 30 is turned to the temporary locking state shown in FIG. A temporary locking recess 32 (see FIGS. 9B and 10B) into which the temporary locking protrusion 243 enters is formed. Then, when the operation lever 30 riding on the temporary locking protrusion 243 is further rotated to reach the temporary locking state shown in FIG. 5A, the temporary locking protrusion 243 enters the temporary locking recess 32. In the state where the temporary locking protrusion 243 enters the temporary locking recess 32, the operation lever 30 strongly resists the reaction force from the electric wire 50 described with reference to FIG. 6 and is held in the temporarily locked state. The

  FIG. 7 is a perspective view ((A1), (B1), (C1)) and a perspective view ((A1), (B1), (C1)) showing the wire cover in different postures. It is an expansion perspective view of the part enclosed by the shown circle D, B, C. Here, the entire structure of the wire cover 20 will be described with reference to FIGS. 7A1, 7 </ b> B <b> 1, and 7 </ b> C <b> 1, and thereafter, with reference to FIGS. The temporary locking projection 243 shown therein will be described.

  As described above, the wire cover 20 includes the dome portion 22 and the pair of arm portions 23. An electric wire extraction opening 21 is formed between the pair of arm portions 23.

  The dome portion 22 has a pair of side walls 221 and an upper wall 222. The pair of side walls 221 expands in a direction rising from both sides of the wire lead-out surface 112 (see FIGS. 3 and 4) of the how housing 10. Further, the upper wall 222 is supported by the pair of side walls 221 and expands so as to face the electric wire drawing surface 112. The dome 22 includes a plurality of electric wires 50 (see FIGS. 1 and 2) between the pair of side walls 221 and the upper wall 222 and the electric wire drawing surface 112 (see FIGS. 3 and 4) of the housing 10. ) Is received. Two support protrusions 25 are provided on the end portion of the wire cover 20 on the dome portion 22 side. Correspondingly, a pair of support holes (not shown) are provided at the left end of the housing 10 in FIGS. The pair of support holes are holes having the same shape as the pair of locking holes 111a provided at the right end of the housing 10 in FIGS. When attaching the wire cover 20 to the housing 10, the support protrusions 25 of the wire cover 20 are fitted into the pair of support holes of the housing 10. The wire cover 20 is pivotally supported so that the support protrusion 25 is fitted in the support hole of the housing 10 so that the wire cover 20 can be rotated toward and away from the housing 10.

  The pair of arm portions 23 extend toward the end opposite to the end where the support protrusion 25 is provided, with the electric wire extraction opening 21 interposed therebetween. Each of these arm portions 23 has a thin plate shape and can be easily bent in a direction in which the arm portions 23 come in contact with or away from each other.

  Further, each locking arm 231 is provided at the tip of each arm portion 23. These locking arms 231 extend in a direction to enter a groove 113 (see FIG. 5) formed in the upper surface 11 of the housing 10. And the hook 231a is provided in the front-end | tip part of those latching arms 231. FIG. The hook 231a has a portion 231b protruding forward and a portion 231c protruding sideways. The portion 231b protruding forward of the hook 231a is locked by entering the locking hole 111a (see FIGS. 3 and 4) of the housing 10. Further, the housing 10 is formed with a locking groove (not shown) at an edge 111 (see FIG. 5) provided on the upper surface 11 thereof. The portion 231c protruding to the side of the hook 231a is locked in the locking groove.

  Further, the wire cover 20 is provided with four protrusions 241 to 244 on one side on the side surface 221 of the dome portion 22. One projection 241 of these four projections 241 to 244 is a projection for supporting the operation lever 30 as described above. Further, the protrusion 242 is a protrusion for preventing the operation lever 30 from rotating excessively when the operation lever 30 is in the posture of FIGS. 1 and 3A.

  Further, the protrusion 243 is the above-described temporary locking protrusion. The temporary locking protrusion 243 will be described in detail later.

  Furthermore, the other protrusion 244 is a protrusion for stopping the rotation of the operation lever 30 when the operation lever 30 is in the locked state shown in FIG. A lock part 223 formed in a cantilever shape is provided on the protrusion 244 side of the wire cover 20. As described above, when the operation lever 30 is rotated in the direction in which the operation lever 30 abuts against the protrusion 244, the operation lever 30 hits the tip of the lock portion 223 and elastically deforms the lock portion 223. Then, the operating lever 30 gets over the lock portion 223 and hits the protrusion 244, and enters the locked state shown in FIG. The lock portion 223 is not easily deformed in the reverse direction, and the operation lever 30 is locked (mainly locked) in a state sandwiched between the protrusion 244 and the lock portion 223. When the lock part 223 is pushed down, the operation arm 30 can pass through the lock part 223.

  As described above, when attaching the wire cover 20 to the housing 10, the support protrusion 25 formed at one end of the wire cover 20 is inserted into a support hole (not shown) provided at one end of the housing 10. The housing 10 is tilted with respect to the electric wire drawing surface 113 and is pivotally supported. At this time, the wire cover 20 is in a posture in which the locking arm 231 side is lifted.

  Next, the end of the shaft-supported dome portion 22 side is used as a rotation center, and the locking arm 231 side of the wire cover 20 is rotated in a direction approaching the housing 10.

  Then, a forwardly protruding portion 231b of the hook 231a formed on the locking arm 231 is locked in the locking hole 111a of the housing 10, and a portion 231c protruding to the side of the hook 231a is the housing 10. Is locked in a locking groove (not shown). In the wire cover 20, the support protrusion 25 is thus supported in the support hole (not shown) of the housing 10, and the hook 231 a is locked in the lock hole 111 a and the lock groove (not shown) of the housing 10. To be attached to the housing 10.

  FIG. 8 is a side view of the wire cover. Here, FIG. 8A shows a state in which the operation lever 30 is in a posture immediately before it is rotated from the locked state (see FIG. 5C) side and reaches the temporarily locked state. Regarding the posture of the operation lever 30, FIG. 8A corresponds to FIG. FIG. 8B shows a state where the operation lever 30 is in a temporarily locked state.

  9 is a perspective view (A) showing a cross section of the wire cover and the operation lever along the arrow FF shown in FIG. 8 (A), and a circle G portion in FIG. 9 (A). It is an enlarged view.

  Further, FIG. 10 is a perspective view (A) showing a cross section of the wire cover and the operation lever along the arrow AA shown in FIG. 8 (B), and a portion of a circle E in FIG. 10 (A). It is an enlarged view.

  Hereinafter, the temporary locking protrusion 243 will be described with reference to FIGS. 8 to 10 together with FIGS. 7A2, 7 </ b> B <b> 2, and 2 </ b> C <b> 2.

  The temporary locking protrusion 243 is a protrusion having a shape in which a slope 243a is formed on a part of a cylindrical protrusion. The inclined surface 243a is formed in such a direction that the edge 30a of the operation lever 30 that has been rotated toward the temporary locking posture contacts the inclined surface 243a with a line. FIG. 9 shows a state in which the edge 30 a of the operation lever 30 is in contact with the inclined surface 243 a of the temporary locking protrusion 243.

  When the operating lever 30 is further rotated from the posture shown in FIG. 8A toward the temporarily locked state shown in FIG. 8B, the operating lever 30 once rides on the temporarily locked protrusion 243. As shown in FIG. 10, the temporary locking protrusion 243 enters the temporary locking recess 32 formed in the operation lever 30. Here, since the inclined surface 243a is formed toward the edge 30a side of the operation lever 30 when the temporary engagement protrusion 243 is rotated toward the temporary engagement state, the operation lever 30 can be operated lightly. It is possible to ride on the temporary locking protrusion 243 with force.

  On the opposite side of the temporary locking projection 243 from the inclined surface 243a, a vertical surface 243b that is as standing as possible is formed. Corresponding to this, the temporary locking recess 32 of the operation lever 30 is also formed with a portion that abuts on the vertical surface 243b on the vertical surface 32a. For this reason, when the operating lever 30 in the temporary locking posture receives a reaction force from the electric wire 50 (see FIG. 6), the vertical surface 32a of the temporary locking recess 32 comes into contact with the vertical surface 243b of the temporary locking protrusion 243. Thereby, the operation lever 30 resists the reaction force from the electric wire 50 stubbornly and remains in the temporarily locked state. Therefore, the cam member 40 is also maintained in a slide position where the cam pin (see FIG. 3) of the mating connector 2 can be received in the cam groove (not shown).

  As described with reference to FIG. 5A, when the arm portions 23 are bent toward each other by grasping the pair of arm portions 23 of the wire cover 20 from both sides, the temporary locking protrusions 243 are temporarily locked. Detach from the recess 32. As a result, the operation lever 30 can be turned from the temporarily locked state to the locked state.

  In the present embodiment, the dome portion 22 is configured to cover most of the wire lead-out surface 112 of the housing 10. However, the dome portion has a top wall that covers a part of the wire lead-out surface 112 and a pair of side walls. The case where it is a bar or a beam which bridges 221 is included.

  Further, in this embodiment, the cam member is an independent member that is slidably supported by the housing, but may be formed integrally with the operation lever. In this case, the operation lever has a cam groove instead of the pinion gear.

1 connector 2, 3 mating connector 2 a cam pin 10, 11 housing 12 opening 20 wire cover 22 dome portion 23 arm portion 25 support projection 30 operation lever 31 pinion gear 32, 42 temporary locking recess 40 cam member 50 electric wire 111 locking hole 112 Electrical outlet surface 112a Electrical outlet 222 Upper wall 223 Lock portion 223a Notch 223b Hole 231 Locking arm 231a Hook 241 244 Protrusion 242 Position restricting protrusion 243 Temporary locking protrusion 243a Slope 243b Vertical surface

Claims (2)

A lock arm structure formed on a member constituting the connector, formed into a cantilever shape by two cuts extending in parallel to each other, and locking the mating member using elastic deformation to release the lock,
A lock arm structure characterized in that at the base of each of the two cuts, there is a portion formed with a diameter larger than the width of the cut.   The lock arm structure according to claim 1, wherein the portion formed to have a large diameter is circular.

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