JP6249232B2 - Lever type connector - Google Patents

Description

  The technique disclosed by this specification is related with a lever-type connector.

  The lever-type connector is a connector having a lever provided with a cam plate. The cam plate has a cam groove that engages with the cam follower of the mating connector. When mating a lever-type connector with a mating connector, after the connectors are mated to face each other and initially mated, the cam groove and cam follower associated with turning the lever from the initial position to the normal mating position Due to the cam action, the two connectors can be easily fitted with a small force. As such a connector, a connector disclosed in Japanese Patent Laid-Open No. 2003-249304 is known.

  The connector of the above document has a mechanism for restricting unintentional rotation of the lever to the initial position. This mechanism includes an elastic lock piece disposed on the lever and a claw portion disposed on the holder. The elastic lock piece is disposed inside an operation portion for rotating the lever, and can be bent and deformed in a direction along the thickness direction of the cam plate. When the lever is in the fitting position, the locking projection provided on the elastic lock piece engages with the claw portion, thereby restricting the rotation of the lever to the initial position.

  The operation part has a large thickness in the vertical direction (direction along the thickness direction of the cam plate) in order to secure a space that allows the elastic lock piece to bend and deform, and the entire operation part extends from the rear end surface of the holder. It is arranged in a form protruding to the rear side, and a part of it projects downward (on the assembly space side where the sub-connector is inserted).

JP 2003-249304 A

  The lever-type connector described in the above document includes a sub-connector that accommodates a terminal fitting, a lever, and a holder that accommodates the lever and the plurality of sub-connectors. According to such a configuration, the lever-type connector can be assembled in a procedure in which the terminal fitting is first accommodated in the sub-connector and then the sub-connector is accommodated in the holder. For this reason, even if the operation part is arranged in a shape protruding from the rear side and the lower side, the lever does not become a factor that hinders the accommodating work when the terminal fitting is accommodated in the sub-connector.

  However, in a connector having a connector housing in which a lever accommodating portion for accommodating a lever and a terminal accommodating portion for accommodating a terminal fitting are integrated, when the terminal fitting is accommodated in the terminal accommodating portion, the protruding operation portion is obstructive. Therefore, there is a concern that workability will be reduced. In order to solve this problem, a countermeasure for providing a space for receiving the operation part in the housing and accommodating the operation part in the space when the terminal fitting is accommodated can be considered.

  However, if it is attempted to arrange a space for receiving the operation part in the housing, when the operation part of the lever is at a position other than the position accommodated in the space, a wall surface and a cam plate surrounding the space for accommodating the operation part There will be a gap between the two. For this reason, there exists a possibility that an electric wire may enter into this space, and an electric wire may be pinched | interposed between a lever and a housing at the time of rotation operation of a lever.

  The lever-type connector disclosed in this specification is a lever-type connector that fits into a mating connector having a cam follower, and includes a connector housing and a cam plate having a cam groove that receives the cam follower. The mating connector is moved relative to the connector housing by the cam action of the cam groove and the cam follower as the cam plate is rotated from the initial position where the cam follower is allowed to enter to the fitting position. The connector housing has a terminal accommodating portion for accommodating a terminal fitting connected to the end of the electric wire inside, and a lever accommodating portion for accommodating the lever therein, and the lever Is provided with a rotation operation part that protrudes from the cam plate toward the terminal accommodation part, the lever accommodation part, A partition wall portion having a receiving surface that is disposed with a clearance for receiving the rotation operation portion between the terminal housing portion and the cam plate. A pinching restricting portion that extends from the moving operation portion and extends forward in the rotation direction from the initial position of the lever to the fitting position along the periphery of the cam plate is provided.

  According to said structure, when performing the operation | work which accommodates a terminal metal fitting in the terminal metal fitting accommodating part of a connector housing, by accommodating the rotation operation part in the space between a receiving surface and a cam board, A situation in which the housing operation is hindered by the lever is less likely to occur. In addition, in order to restrict the electric wire connected to the terminal fitting from entering this space, a sandwiching restricting portion is arranged in the lever. Thereby, it is avoided that an electric wire is pinched | interposed between a housing and a lever.

  As an aspect of the technology disclosed by this specification, the following configurations are preferable.

  The connector housing is disposed outside a passing position through which the sandwiching restricting portion passes when the lever rotates in the partition wall portion, and includes a relief recess that is recessed toward the terminal accommodating portion with respect to the receiving surface. It may be.

  According to the above configuration, even if the electric wire is likely to be pinched between the pinch restricting portion and the receiving surface, the electric wire is pushed outward by the pinch restricting portion as the lever rotates, and the escape concave portion is formed. By escaping, pinching is avoided.

  According to the technology disclosed in this specification, it is possible to avoid the electric wire from being caught in the gap between the lever and the housing.

The top view of a lever-type connector when a lever exists in a fitting position in an embodiment The rear view of a lever type connector when a lever exists in a fitting position in an embodiment In embodiment, the side view of a lever-type connector when a lever exists in a fitting position In the embodiment, the bottom view of the lever-type connector when the lever is in the initial position Top view of connector housing of embodiment Rear view of the connector housing of the embodiment Side view of connector housing of embodiment AA line sectional view of FIG. Plan view of lever of embodiment Side view of the lever of the embodiment The perspective view which shows a mode that it tries to attach | subject a terminal metal fitting to a lever-type connector in embodiment. In the embodiment, the perspective view which looked at the lever type connector when the lever is in the initial position from the lever accommodating portion side The perspective view which looked at the lever type connector when a lever exists in an initial position in the embodiment from the terminal accommodating part side The perspective view which looked at the lever-type connector when the lever is in the position in the middle of being rotated from the initial position to the fitting position from the lever housing portion side in the embodiment. The perspective view which looked at the lever-type connector when the lever is in the middle of the rotation from the initial position to the fitting position from the terminal accommodating portion side in the embodiment. The perspective view which looked at the lever type connector when a lever exists in a fitting position from the lever accommodating part side in an embodiment. The perspective view which looked at the lever-type connector when a lever exists in a fitting position from the terminal accommodating part side in embodiment.

  The embodiment will be described with reference to FIGS. The lever-type connector 1 of the present embodiment is a female connector that can be fitted to a male connector (not shown). As shown in FIG. 1, a connector housing 10 (hereinafter abbreviated as “housing 10”). And a lever 50 that fits the housing 10 and the male connector by a cam action with a cam follower (not shown) provided in the male connector.

(Housing 10)
The housing 10 is made of synthetic resin, and, as shown in FIG. 6, the terminal accommodating portion 20 having the terminal fitting accommodating chamber 21 for accommodating the terminal fitting T, and the lever accommodating chamber 36 for accommodating the lever 50. And a lever accommodating portion 30 having As shown in FIGS. 5 and 7, one of the plurality of outer surfaces of the housing 10 is a fitting surface 11 that faces the male connector when mated with the male connector, and is parallel to the fitting surface 11. The other surface is the insertion surface 12 into which the terminal fitting T and the lever 50 are inserted into the terminal fitting receiving chamber 21 and the lever receiving chamber 36.

  The terminal accommodating portion 20 is a rectangular parallelepiped block-like portion as a whole, and has a plurality of terminal fitting accommodating chambers 21 as shown in FIG. Each of the plurality of terminal fitting accommodation chambers 21 is a space that opens to the fitting surface 11 and the insertion surface 12 and accommodates the terminal fitting T therein. A terminal fitting T is inserted into each terminal fitting receiving chamber 21 from the opening on the insertion surface 12 side toward the fitting surface 11.

  As shown in FIG. 11, the terminal fitting T is a female metal fitting that is made of metal having excellent conductivity and can be electrically connected to a male terminal fitting (not shown) provided in the male connector. Crimped to the terminal.

As shown in FIGS. 5 and 6, the lever accommodating portion 30 includes a partition wall portion 31, three rising wall portions 32, 33, and 34, and an opposing wall portion 35.
As shown in FIG. 6, the partition wall portion 31 is a wall portion that is disposed perpendicular to the fitting surface 11 and the insertion surface 12 and partitions the lever housing chamber 36 from the terminal housing portion 20.

  As shown in FIGS. 5, 6, and 8, the three rising wall portions 32, 33, and 34 are opposite to the terminal accommodating portion 20 from three sides excluding one side along the insertion surface 12 in the partition wall portion 31. On the side, the wall portion rises perpendicularly to the partition wall portion 31. Of the three rising wall portions 32, 33, and 34, the wall portion rising from the side along the fitting surface 11 of the partition wall portion 31 is the first rising wall portion 32 and rising from the other two sides of the partition wall portion 31. One of the two wall portions (the left side in FIGS. 6 and 8) is the second rising wall portion 33, and the other (the right side in FIGS. 6 and 8) is the third rising wall portion 34. The second rising wall portion 33 and the third rising wall portion 34 are arranged perpendicular to the first rising wall portion 32 as shown in FIG.

  The facing wall portion 35 is a wall portion that continues from the rising tip portions of the rising wall portions 32, 33, and 34. As shown in FIG. 6, the facing wall portion 35 is spaced apart from the partition wall portion 31 with the partition wall portion 31. They are arranged in parallel (perpendicular to the fitting surface 11 and the insertion surface 12). A surface of the partition wall portion 31 that faces the facing wall portion 35 is a cam plate arrangement surface 31A. A cylindrical shaft portion 37 for pivotally supporting the lever 50 is provided on the cam plate placement surface 31A so as to protrude toward the opposing wall portion 35.

  A space surrounded by the three rising wall portions 32, 33, 34, the opposing wall portion 35, and the partition wall portion 31 opens to the insertion surface 12 side, and becomes a lever housing chamber 36 that houses the lever 50 therein. ing.

  As shown in FIGS. 5 and 8, the first rising wall portion 32 and the opposing wall portion 35 have a cam follower insertion portion 38 that receives a cam follower provided in the male connector, and a release portion insertion that receives the release portion provided in the male connector. A portion 39 is arranged.

  The cam follower insertion portion 38 has a shape in which a hole penetrating from the outer surface to the inner side surface of the first rising wall portion 32 and a hole penetrating from the outer surface to the inner side surface of the opposing wall portion 35 are connected. A portion of the cam follower insertion portion 38 disposed on the opposing wall portion 35 extends perpendicularly to the first rising wall portion 32 from the first rising wall portion 32 toward the insertion surface 12.

  The release portion insertion portion 39 has a shape in which a hole penetrating from the outer surface to the inner side surface of the first rising wall portion 32 and a hole penetrating from the outer surface to the inner side surface of the opposing wall portion 35 are connected. A portion of the release portion insertion portion 39 disposed on the opposing wall portion 35 extends perpendicularly to the first rising wall portion 32 from the first rising wall portion 32 toward the insertion surface 12.

  The release portion insertion portion 39 is disposed adjacent to the third rising wall portion 34, and the cam follower insertion portion 38 is disposed closer to the second rising wall portion 33 than the release portion insertion portion 39.

  As shown in FIGS. 5 and 8, the third rising wall portion 34 is provided with an initial position locking portion 41 for locking the lever 50 at the initial position so as to protrude toward the second rising wall portion 33. ing. As shown in FIG. 6, a fitting position lock portion 42 that locks the lever 50 at the fitting position is provided on the inner side surface (surface facing the partition wall portion 31) of the facing wall portion 35. It is provided in the form which protrudes toward.

  In addition, as shown in FIG. 5, a part of the facing wall portion 35 close to the insertion surface 12 is an area where the cam follower insertion portion 38 and the release portion insertion portion 39 are not disposed. A thick portion 43 that is partially thick is provided so as to protrude outward (on the opposite side of the terminal accommodating portion 20; upper side in FIG. 7).

  As shown in FIG. 5, the thick portion 43 has a first operation portion receiving recess 44. The first operating portion receiving recess 44 is formed in the thick portion 43 with reference to the insertion surface 12 of the housing 10 and the outer surface of the second rising wall portion 33 (the fitting surface 11 side and the third rising wall portion 34 side: FIG. 5 on the upper side and the right side of 5, which are continuous from the second rising wall 33, parallel to the insertion surface 12, closer to the first rising wall 32 than the insertion surface 12 (upward in FIG. 5). ) The first rotation restricting wall 44A to be arranged, and the first rotation restricting wall 44A from the end portion close to the third rising wall portion 34 to be inclined toward the insertion surface 12 as the third rising wall portion 34 is approached. 1 is a recess defined by the reverse rotation restricting wall 44B.

  As shown in FIGS. 6 and 8, the partition wall portion 31 includes a second operation portion receiving recess 45 and a restriction wall receiving groove portion 47.

  The second operation portion receiving recessed portion 45 is a recessed portion that is recessed toward the terminal accommodating portion 20 (downward in FIG. 6) with respect to the cam plate placement surface 31A, and is continuous from the insertion surface 12, and is connected to the cam plate placement surface 31A. In parallel, the bottom surface 45C (corresponding to the receiving surface) disposed closer to the terminal accommodating portion 20 (lower in FIG. 6) than the cam plate placement surface 31A is continuous from the bottom surface 45C and parallel to the insertion surface 12. A second rotation restricting wall 45A disposed closer to the fitting surface 11 than the insertion surface 12 (upward in FIG. 8), and an end portion of the second rotation restricting wall 45A near the third rising wall portion 34. Therefore, the second reverse rotation restricting wall 45B is inclined toward the insertion surface 12 as it approaches the third rising wall portion 34. The first operation portion receiving recess 44 and the second operation portion receiving recess 45 are formed by the first rotation restricting wall 44A and the second rotation restricting when the housing 10 is viewed from the opposing wall portion 35 toward the terminal accommodating portion 20. It arrange | positions so that the position with the wall 45A and the position of the 1st reverse rotation control wall 44B and the 2nd reverse rotation control wall 45B may overlap.

  As shown in FIGS. 6 and 8, an escape recess 46 is further disposed at the end of the second operating portion receiving recess 45 on the second rising wall 33 side. The relief recess 46 is formed so as to cut out a part of the terminal accommodating portion 20, and toward the side opposite to the cam plate placement surface 31A with reference to the bottom surface 45C of the second operation portion receiving recess 45 (see FIG. 5). It is a recess recessed in the lower side. The escape recess 46 is open to the insertion surface 12 side and the second rising wall 33 side, and the internal space of the escape recess 46 communicates with the internal space of the second operation portion receiving recess 45.

  The restriction wall receiving groove 47 extends along the second rising wall 33 as shown in FIG. 8, and faces the terminal accommodating portion 20 with reference to the cam plate placement surface 31A as shown in FIG. It is a groove part recessed in the side. As shown in FIG. 8, the restriction wall receiving groove portion 47 has an end on the insertion surface 12 side connected to the second operation portion receiving recess 45, and as shown in FIG. 6, a groove bottom surface 47 </ b> A of the restriction wall receiving groove portion 47. Is flush with the bottom surface 45C of the second operating portion receiving recess 45.

(Lever 50)
The lever 50 is made of synthetic resin and includes a cam plate 51. As shown in FIG. 9, the cam plate 51 is a rectangular plate-like portion with rounded corners as a whole, and is arranged inside the lever housing chamber 36 in parallel with the partition wall portion 31 and the opposing wall portion 35. Be placed.

  The cam plate 51 has a bearing hole portion 52 for receiving the shaft portion 37 of the housing 10 inside, and a cam groove 53 for receiving a cam follower of the male connector inside.

  The bearing hole portion 52 is a circular hole portion that is recessed inward with reference to a plate surface that faces the cam plate arrangement surface 31 </ b> A of the cam plate 51. The lever 50 is fitted between the initial position (position shown in FIGS. 12 and 13) and the fitting position (position shown in FIGS. 16 and 17) by fitting the shaft portion 37 into the bearing hole 52. It is pivotally supported. As shown in FIG. 1, when the lever 50 is in the fitting position, the three sides are arranged in a direction substantially parallel to the three rising wall portions 32, 33, and 34, and when in the initial position, the lever 50 is As shown in FIG. 4, the three sides are inclined with respect to the three rising wall portions 32, 33, and 34. When the lever 50 is in the mating position, the lever 50 that is disposed in the housing 10 in the vicinity of the corner between the insertion surface 12 and the second rising wall 33 (the lower left corner in FIG. 1). One corner portion (the lower left corner portion in FIG. 1) protrudes outside the insertion surface 12 of the housing 10 when the lever 50 is in the initial position (see FIG. 4).

  The cam groove 53 is an end edge (the right end edge in FIG. 9; FIG. 1) that is arranged along the third rising wall portion 34 when the lever 50 is arranged at the fitting position. The groove extends inward from the reference portion 53 and has a substantially arc shape that gradually approaches the bearing hole 52 that is the rotation center of the cam plate 51 from the entrance 53A to the back end 53B.

  The cam plate 51 is engaged with the initial position lock portion 41 to hold the lever 50 in the initial position, and the cam position 51 is engaged with the fitting position lock portion 42 to engage the lever 50. A locking arm 55 for a fitting position that is held in position is provided.

  The initial position lock arm 54 is an elongated arm having one end (base end) connected to the cam plate 51 and the other end being a free end, as shown in FIG. The end portion is connected near the entrance portion 53 </ b> A of the cam groove 53 and extends along the periphery of the cam plate 51. The initial position lock arm 54 is arranged at a distance from the periphery of the cam plate 51, and in the direction approaching or separating from the cam plate 51 with the base end as a fulcrum, that is, in the thickness direction of the cam plate 51. It is possible to bend elastically in the intersecting direction (left-right direction in FIG. 9). Then, in the state where the lever 50 is arranged at the initial position, the initial position lock arm 54 enters the release portion insertion portion 39 and is locked to the initial position lock portion 41. It is possible to hold the lever 50 in a state where it is restricted from rotating from the initial position to the fitting position side.

  The locking arm 55 for the fitting position is inward from the edge (the lower edge in FIG. 9) arranged along the insertion surface 12 in the state where the lever 50 is arranged at the fitting position in the cam plate 51. By arranging the two slits S extending toward each other in parallel and spaced from each other, a portion between the pair of slits S can be elastically bent in a direction perpendicular to the plate surface of the cam plate 51. It is what. Although the lock arm 55 for the fitting position is entirely exposed to the outside of the lever accommodating portion 30 when the lever 50 is arranged at the initial position (see FIG. 12), the lever 50 is arranged at the fitting position. In this state, it extends straight along the fitting direction with the male connector (direction from the fitting surface 11 toward the insertion surface 12). The locking arm 55 for the fitting position is a lock releasing part 55B whose free end can perform the unlocking operation, and the surface facing the opposing wall part 35 when the lever 50 is in the fitting position. In addition, it has a locking projection 55 </ b> A for locking to the fitting position lock portion 42.

  The lever 50 has a rotation operation unit 56. The rotation operation unit 56 is an end edge (a lower end edge in FIG. 9; FIG. 1 together) arranged along the insertion surface 12 in a state where the lever 50 is disposed in the fitting position in the cam plate 51. 2), an end portion close to the second rising wall portion 33 is disposed so as to surround the fitting position lock arm 55. Specifically, as shown in FIGS. 2 and 11, the rotation operation unit 56 includes a pair of column portions 57A and 57B and a pair of bridging portions 58A and 58B.

  One pair of column portions 57A and 57B is disposed on each side of the cam plate 51 with the fitting position lock arm 55 interposed therebetween. Each of the column portions 57A and 57B is opposed to the side of the cam plate 51 perpendicular to the plate surface direction (that is, the side facing the partition wall portion 31 with the lever 50 mounted on the housing 10). It is a columnar part that protrudes toward the wall 35. One bridging portion 58A of the pair of bridging portions 58A and 58B bridges the edges of the two pillar portions 57A and 57B on the partition wall portion 31 side, and the other bridging portion 58B has two pillar portions 57A. 57B, the edges on the opposite wall 35 side are bridged. The pair of column portions 57A, 57B and the pair of bridging portions 58A, 58B form an annular shape so as to surround the fitting position lock arm 55. Each of the pair of bridging portions 58A, 58B is disposed with a space from the fitting position lock arm 55, and between the fitting position lock arm 55 and each of the pair of bridging portions 58A, 58B. In addition, a sufficient space for allowing the fitting position lock arm 55 to bend is secured.

  In order to avoid the electric wire W being sandwiched between the rotation operation part 56 and the partition wall part 31, the opposing surface 56 </ b> A facing the partition wall in the state where the lever 50 is assembled to the housing 10 is the second surface. It is preferable that they are in contact with the bottom surface 45C of the operation portion receiving recess 45 or are arranged with almost no gap.

  The lever 50 includes a pinching restriction wall 59 (corresponding to a pinching restriction portion) for restricting the electric wire W from being pinched between the cam plate 51 and the housing 10. As shown in FIGS. 10, 12, and 13, the sandwiching restriction wall 59 is a wall that is erected vertically with respect to the cam plate 51, and is connected to the rotation operation unit 56. Is fitted from the initial position of the lever 50 along the edge (the left edge in FIG. 9; see also FIG. 1) arranged along the second rising wall portion 33 when is in the fitting position. It extends toward the front in the direction of rotation to the position (arrow direction in FIG. 13). As shown in FIGS. 12 and 13, the sandwiching restriction wall 59 is exposed to the outside of the lever accommodating portion 30 in a state where the lever 50 is disposed at the initial position, and the lever 50 moves toward the fitting position. When rotated, as shown in FIGS. 14 and 15, the restriction wall receiving groove 47 is entered.

  The sandwiching restriction wall 59 has a portion disposed on the partition wall portion 31 side with respect to the cam plate 51 in a state where the lever 50 is accommodated in the lever accommodating portion 30, and a portion disposed on the opposing wall portion 35 side. doing. The sandwiching restriction wall 59 is disposed on the partition wall portion 31 side when the lever 50 is in the initial position, as shown in FIG. 12, in order to restrict the electric wire W from being sandwiched between the housing 10. It is preferable that the end 59 </ b> A on the side opposite to the rotation operation portion 56 is disposed so as to slightly overlap the bottom surface 45 </ b> C of the second operation portion receiving recess 45. Further, in a state where the lever 50 is being rotated from the initial position to the fitting position, as shown in FIG. 15, the edge 59B on the partition wall portion 31 side contacts the bottom surface 45C of the second operation portion receiving recess 45. It is preferable that they are arranged so that there is almost no gap.

  When the lever 50 rotates from the initial position to the fitting position, the sandwiching restriction wall 59 passes through the vicinity of the end edge on the escape recess 46 side in the second operation portion receiving recess 45. In other words, as shown in FIG. 14, the escape recess 46 is located outside the passing position through which the pinching restriction wall 59 passes when the lever 50 rotates in the second operation portion receiving recess 45 (the side opposite to the cam plate 51). ).

(Function)
The lever-type connector 1 of the present embodiment has the above structure, and the operation thereof will be described next. First, when the lever 50 is assembled to the housing 10, the lever 50 is inserted into the lever housing portion 30 and the bearing hole portion 52 is fitted to the shaft portion 37. As a result, the lever 50 is pivotally supported so as to be rotatable about the shaft portion 37.

  When the lever 50 accommodated in the lever accommodating portion 30 is arranged at the mating position, the mating position lock arm 55 is locked to the mating position lock portion 42, and the bridging portion 58A of the rotation operation portion 56 is provided. 58B is in contact with the first rotation restricting wall 44A and the second rotation restricting wall 45A, so that the lever 50 moves forward or backward from the fitting position in the rotation direction (the rotation direction to the initial position, And the opposite direction) are also held in a non-rotatable state (see FIG. 1). At this time, the rotation operation unit 56 is accommodated in the first operation unit receiving recess 44 and the second operation unit receiving recess 45, and the entire operation unit 56 with respect to the insertion surface 12 (see FIG. 11). It is located on the back left side.

  Then, the operation | work which mounts the terminal metal fitting T in the terminal accommodating part 20 of the housing 10 assembled | attached in the state which hold | maintained the lever 50 in the fitting position is performed. As shown in FIG. 11, the terminal fitting T is inserted into the terminal fitting accommodation chamber 21 from the opening on the insertion surface 12 side. Here, as described above, when the lever 50 is in the fitting position, the rotation operation unit 56 does not protrude outward from the insertion surface 12 (on the side opposite to the fitting surface 11; the right front side in FIG. 11). Therefore, the terminal fitting T can be mounted smoothly. The electric wire W connected to the terminal fitting T is led out from the opening on the insertion surface 12 side of the terminal fitting accommodation chamber 21. For the sake of space, FIGS. 11 to 17 show only one or two of the plurality of terminal fittings T and electric wires W as representatives.

  After all the terminal fittings T are accommodated in the housing 10, the operation of fitting the lever connector 1 to the male connector is subsequently performed. Prior to performing the fitting operation, the locked state of the fitting position lock arm 55 with respect to the fitting position lock portion 42 is released, and the lever 50 is moved from the fitting position to the initial position (FIGS. 12 and 13). And keep turning. When the lever 50 is arranged at the initial position, the free end of the initial position lock arm 54 is locked to the initial position lock portion 41 and one of the two column portions 57A and 57B of the rotation operation portion 56 is used. The column portion 57B (on the side closer to the third rising wall portion 34) abuts on the first reverse rotation restricting wall 44B and the second reverse rotation restricting wall 45B, so that the lever 50 is moved forward from the initial position in the rotation direction. It is held in a state in which it cannot rotate in any reverse direction (the direction of rotation to the fitting position and the opposite direction). In addition, the cam groove 53 has an entrance portion 53A disposed in the cam follower insertion portion 38 of the lever housing portion 30 and is open toward the fitting surface 11, so that the cam follower is allowed to enter the inside. ing.

  From this state, the lever-type connector 1 is fitted into the male connector. When the lever-type connector 1 is fitted to the male connector to a predetermined depth, the initial position lock arm 54 is bent by the release portion of the male connector, so that the locked state with respect to the initial position lock portion 41 is released. This allows the lever 50 to rotate from the initial position to the fitting position side. When the locking is released, the cam follower of the male connector enters the entrance portion 53 </ b> A in the cam groove 53 of the lever 50.

  When the unlocked lever 50 is rotated from the initial position toward the mating position, the cam follower moves along the peripheral edge of the cam groove 53 from the entrance portion 53A to the back end portion 53B side. 10 is pulled relatively to the male connector side, and the fitting proceeds.

  At this time, the pinch restriction wall 59 and the escape recess 46 prevent the electric wire W led out from the terminal fitting housing chamber 21 from being pinched between the lever 50 and the housing 10. That is, as shown in FIGS. 12 and 13, when the lever 50 is in the initial position, the portion of the cam plate 51 that is located outside the insertion surface 12 of the housing 10 (the right front side in FIGS. 12 and 13) is As shown in FIG. 13, the peripheral portion is surrounded by the rotation operation portion 56 and the sandwiching restriction wall 59 so that there is almost no gap between the bottom surface 45 </ b> C of the second operation portion receiving recess 45. This restricts the electric wire W from entering between the cam plate 51 and the bottom surface 45C, and avoids the electric wire W being sandwiched between the lever 50 and the housing 10 when the lever 50 is about to rotate. Is done. Even if the electric wire W is about to be pinched, the electric wire W is pinched and pushed to the outside (the second rising wall portion 33 side) by the pinching restriction wall 59 as the lever 50 rotates, and escapes to the escape recess 46. This avoids pinching.

  When the lever 50 is rotated to the vicinity of the fitting position, the lock portion 42 rides on the locking projection 55A, so that the fitting position lock arm 55 is bent and deformed.

  When the lever 50 is rotated to the mating position, the housing 10 reaches a normal mating depth with respect to the male connector, the mating position lock arm 55 is elastically restored, and the locking projection 55A is locked. Locked to the portion 42. Further, the two bridging portions 58A and 58B of the turning operation unit 56 are brought into contact with the first turning restriction wall 44A and the second turning restriction wall 45A, respectively, so that the lever 50 is turned from the fitting position in the turning direction. Is held in a state in which it cannot rotate in either the forward or reverse direction.

(Summary)
As described above, according to the present embodiment, when performing the work of attaching the terminal fitting T to the terminal accommodating portion 20 of the housing 10, the first operating portion receiving recess 44 is made by setting the lever 50 to the fitting position. And since the rotation operation part 56 is accommodated in the 2nd operation part receiving recessed part 45, the situation where the terminal insertion operation | work is prevented by the lever 50 becomes difficult to occur. However, with this configuration, when the lever 50 is in the initial position, there is a gap between the cam plate 51 and the bottom surface 45C of the second operation portion receiving recess 45, so the terminal fitting T There is a possibility that the electric wire W connected to the gap enters the gap and is sandwiched between the housing 10 and the lever 50 as the lever 50 rotates. In order to solve this problem, a pinch regulating wall that is connected to the lever 50 from the rotation operation unit 56 and extends forward along the peripheral edge of the cam plate 51 from the initial position of the lever 50 to the fitting position in the rotation direction. 59 is arranged. The sandwiching restriction wall 59 restricts the electric wire W from entering between the bottom surface 45 </ b> C and the cam plate 51, and the electric wire W is prevented from being sandwiched between the housing 10 and the lever 50.

  Further, even if the electric wire W is about to be pinched, the electric wire W is pushed outward by the pinching restriction wall 59 as the lever 50 rotates, and the pinion is avoided by escaping to the escape recess 46.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and for example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the rotation operation unit 56 protrudes in the plate thickness direction of the cam plate 51 in order to secure a space allowing the deformation deformation of the engagement position lock arm 55. Although it does not have a locking arm for the alignment position, even in a connector having a lever whose rotation operation part is extended in the thickness direction of the cam plate in order to facilitate the rotation operation even if it is small, it is also pinched By providing the restricting portion, the electric wire can be prevented from being caught.

(2) In the above embodiment, the sandwiching restriction wall 59 has a part arranged on the partition wall part 31 side with respect to the cam plate 51 and a part arranged on the opposing wall part 35 side. The sandwiching restriction wall may have only a portion disposed on the partition wall side with respect to the cam plate.

DESCRIPTION OF SYMBOLS 1 ... Lever type connector 10 ... Connector housing 20 ... Terminal accommodating part 30 ... Lever accommodating part 31 ... Partition wall part 45C ... Bottom face (receiving surface)
46 ... Relief recess 50 ... Lever 51 ... Cam plate 53 ... Cam groove 56 ... Rotating operation part 59 ... Pinch restriction wall (Pinch restriction part)
T ... Terminal fitting W ... Electric wire

Claims (2)

A lever-type connector that mates with a mating connector having a cam follower,
A connector housing;
A cam plate having a cam groove for receiving the cam follower, the cam groove and the cam follower being rotated as the cam plate is rotated from an initial position permitting the cam follower to enter the cam plate to a fitting position. A lever that draws the mating connector relative to the connector housing by the cam action of
The connector housing has a terminal accommodating portion for accommodating therein a terminal fitting connected to an end of the electric wire, and a lever accommodating portion for accommodating the lever therein;
The lever includes a rotation operation part that protrudes from the cam plate toward the terminal accommodating part,
The lever housing portion is provided with a partition wall portion having a receiving surface that is arranged with a gap to receive the rotation operation portion between the lever housing portion and the cam plate, and the cam housing.
A lever-type connector, wherein the lever includes a pinching restriction portion that extends from the rotation operation portion and extends forward in the rotation direction from the initial position of the lever to the fitting position along the periphery of the cam plate.   The connector housing is disposed outside a passing position through which the sandwiching restriction wall passes when the lever rotates in the partition wall portion, and includes a relief recess that is recessed toward the terminal accommodating portion with respect to the receiving surface. The lever type connector according to claim 1.

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