Connector

Abstract

A connector (10) is provided with a housing (11), a lance section (11B), an opening section (11F), and an outer wall section (13B). The housing (11) has a cavity (11A) into which the terminal fitting (12) is inserted. The lance-shaped part (11B) is clamped with the terminal fitting (12) in the insertion cavity (11A) so as to prevent the terminal fitting (12) from being separated, and the lance-shaped part (11B) can elastically deform. The opening part (11F) is opened on the outer wall surface of the housing (11), and the lance-shaped part (11B) can be exposed on the outer wall surface. The outer wall portion (13B) is attached to the housing (11) so as to cover the opening portion (11F). The outer wall portion (13B) moves between a separated position in which the outer wall portion (13B) is separated from the lance-shaped portion (11B) and allows elastic deformation of the lance-shaped portion (11B), and an approaching position in which the outer wall portion (13B) approaches the lance-shaped portion (11B) and suppresses elastic deformation of the lance-shaped portion (11B) and maintains a state in which the lance-shaped portion (11B) is engaged with the terminal fitting (12).

Description

Technical Field

[0001] The present disclosure relates to a connector. Background Art

[0002] Patent document 1 discloses a connector having a lance in a cavity. When a terminal part is inserted into the cavity, the lance is elastically deformed by the terminal part, and when the terminal part reaches a proper position in the cavity, the lance elastically recovers, thereby preventing the terminal part from falling off. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2021-18907 Summary of the invention Problems to be solved by the invention

[0004] The connector of Patent Document 1 has a space in the connector housing for the lance to bend. However, this space is used for the lance to bend when the terminal part is inserted into the cavity, and is not used after the lance is locked with the terminal part. Therefore, when miniaturizing the connector, the formation of such a space may hinder the miniaturization of the connector.

[0005] The present disclosure is made based on the above situation, and an object of the present disclosure is to provide a connector that is easy to miniaturize. Solutions to Solve Problems

[0006] The connector disclosed in the present invention comprises: A housing having a cavity for inserting the terminal parts; A lance-shaped portion, which is engaged with the terminal part inserted into the cavity to prevent the terminal part from coming out and is elastically deformable; An opening portion is opened on the outer wall surface of the housing so that the lance-shaped portion can be exposed on the outer wall surface; and an outer wall portion, mounted on the housing in a manner covering the opening portion, The outer wall portion moves between a separated position and an approached position, In the separated position, the outer wall portion is separated from the lance portion to allow the lance portion to deform elastically. At the approach position, the outer wall portion approaches the lance to suppress elastic deformation of the lance, and maintains a state in which the lance and the terminal fitting are locked. Effects of the Invention

[0007] According to the present disclosure, it is easy to miniaturize the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1It is an exploded perspective view of the connector according to the present embodiment. Figure 2 It is a three-dimensional diagram of the shell. Figure 3 It is a three-dimensional diagram of the movable parts. Figure 4 It is a perspective view of the connector with the outer wall portion in a separated position. Figure 5 It is a side view of the connector in a state where the outer wall portion is in a separated position. Figure 6 yes Figure 5 AA section view. Figure 7 yes Figure 5 BB cross-sectional view. Figure 8 It is a side cross-sectional view of the connector in a state where the outer wall portion is in a separated position. Fig. 9 Equivalent to Figure 5 The AA cross-sectional view shows the state where the outer wall portion is in the approach position. Fig.10 Equivalent to Figure 5 The BB cross-sectional view shows the state where the outer wall portion is in the close position. Fig.11 It is a side cross-sectional view of the connector in a state where the outer wall portion is in the close position. DETAILED DESCRIPTION

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be described below. The connector disclosed herein, (1) It is provided with a housing, a lance, an opening, and an outer wall. The housing has a cavity for inserting a terminal part. The lance is locked with the terminal part inserted into the cavity to prevent the terminal part from coming out, and is elastically deformable. The opening is opened on the outer wall surface of the housing, and the lance is exposed on the outer wall surface. The outer wall is mounted on the housing in a manner covering the opening. The outer wall moves between a separation position and an approach position. In the separation position, the outer wall is separated from the lance and allows the lance to deform elastically. In the approach position, the outer wall approaches the lance and suppresses the elastic deformation of the lance, and maintains the state where the lance is locked with the terminal part. According to this structure, when the terminal part is inserted into or pulled out of the cavity, a space in which the lance can deform elastically is formed by moving the outer wall to the separation position. Then, after the terminal part is inserted into the cavity, the space in which the lance is elastically deformed is eliminated by moving the outer wall to the approach position. Thus, it is possible to suppress the formation of a useless area in the housing after the terminal part is inserted into the cavity.

[0010] (2) Preferably, the connector disclosed in the present invention further includes a stopper mounted on the shell. Preferably, the outer wall portion and the stopper are formed integrally, and when the outer wall portion is in the separated position, the stopper is configured to be in a temporary locking position, and at the temporary locking position, the stopper allows the terminal part to be inserted into the cavity. Preferably, when the outer wall portion is in the approach position, the stopper is configured to be in a formal locking position, and at the formal locking position, the stopper is locked with the terminal part inserted into the regular position in the cavity to prevent the terminal part from falling out. According to this structure, since the outer wall portion and the stopper are formed integrally, the outer wall portion and the stopper can be moved together. Thus, the two functions of suppressing the elastic deformation of the lance-shaped portion and formally locking the terminal part can be achieved by one action.

[0011] (3) In the connector disclosed in the present invention, preferably, a jig insertion opening for inserting a jig for operating the lance is opened between the front end of the housing and the front end of the outer wall. Preferably, when the outer wall is in the separated position, the opening size of the jig insertion opening in the moving direction of the outer wall between the separated position and the approach position is an insertion possible size in which the jig can be inserted. Preferably, when the outer wall is in the approach position, the opening size is an insertion inhibition size in which the insertion of the jig is inhibited. According to this structure, the insertion of the jig can be inhibited when the outer wall is in the approach position and the elastic deformation of the lance is inhibited.

[0012] (4) In the connector of the present disclosure, the housing preferably has a plurality of cavities, and the outer wall portion preferably has a partition wall that partitions the jig insertion port in a manner corresponding to each cavity. According to this structure, the jig can be easily and reliably inserted into a desired cavity.

[0013] (5) In the connector disclosed in the present invention, preferably, an insertion hole is formed through the front end of the housing for inserting the mating terminal part into the cavity, and a partition is provided to separate the insertion hole and the jig insertion port. According to this structure, the partition can prevent the jig from being inserted into the cavity by mistake.

[0014] (6) The outer wall portion of the connector disclosed in the present invention is preferably arranged in front of the stopper, that is, at the front end of the shell. Preferably, a first stop portion that is locked with the shell is provided at the front end of the outer wall portion. Preferably, a second stop portion that is locked with the shell is provided at a position behind the first stop portion of the outer wall portion. According to this structure, the front end of the outer wall portion can be locked with the shell by the first stop portion to suppress the instability of the position of the front end of the outer wall portion relative to the shell.

[0015] (7) When the lance deforms and contacts the outer wall in the separated position, the stress generated by the elastic deformation of the lance is preferably within the elastic limit of the lance. This structure can prevent the lance from plastically deforming (maintaining the deformed state of the lance).

[0016] [Details of the embodiments of the present disclosure] <Implementation method 1> refer to Figures 1 to 11 A connector 10 that embodies the present disclosure is described. In the figure, "front side", "rear side", "upper side", "lower side", "right side" and "left side" are respectively represented by "F", "B", "U", "D", "R" and "L". In the present embodiment 1, the left-right direction corresponds to the width direction. Figure 1 As shown, the connector 10 includes a housing 11 , terminal fittings 12 , and a movable member 13 .

[0017] [Structure of the housing] The housing 11 is made of synthetic resin. The housing 11 is in a block shape that is bilaterally symmetrical. Figure 2 As shown, in the housing 11, a plurality of (five in this embodiment) cavities 11A are formed in a manner that penetrates the housing 11 in the front-to-back direction, and these cavities 11A are arranged in parallel in the left-right direction (width direction). A lance 11B is provided in each cavity 11A in a manner that cantilever-extends forward along its lower surface. The lance 11B has a function of locking with the terminal part 12 inserted into the cavity 11A to prevent the terminal part 12 from coming out. The lance 11B can be elastically deformed downward.

[0018] The front end portion of the housing 11 is provided with a through hole for receiving a terminal part T on the other side (see FIG. Figure 8 ) is inserted from the front into the through hole 11C in the cavity 11A. Below the through hole 11C, a partition 11D is provided along the lower edge of the through hole 11C. The partition 11D is provided along the lower edge of the front end of the housing 11.

[0019] A pair of downwardly extending protruding portions 11E are provided on both side edges in the left-right direction of the housing 11. An opening portion 11F is formed on the lower side of the housing 11, i.e., between the pair of protruding portions 11E. The opening portion 11F is formed to open on the outer wall surface of the housing 11 from the central portion in the front-back direction of the housing 11 to the front end, and exposes the cavity 11A and the lance 11B on the outer wall surface. A stopper insertion hole 11G that is recessed upward is formed behind the lance 11B. The stopper insertion hole 11G is located behind the opening portion 11F and communicates with each cavity 11A.

[0020] A formal locking protrusion 11H and a temporary locking protrusion 11J are provided on the outer surfaces of the pair of protruding parts 11E in the left-right direction. The formal locking protrusion 11H and the temporary locking protrusion 11J are formed to extend long in the front-back direction. The formal locking protrusion 11H is arranged above the temporary locking protrusion 11J. A locking claw 11K is provided at the lower end of the inner side in the left-right direction of the front end of the pair of protruding parts 11E. The locking claw 11K is arranged in front and below the formal locking protrusion 11H and the temporary locking protrusion 11J.

[0021] [Structure of terminal parts] The terminal part 12 is made of a conductive metal. Figure 1 As shown, the terminal part 12 is connected to the terminal end of the wire 31, and a square cylindrical box part 12A is provided at the front. The tab of the terminal part T on the other side is inserted into the box part 12A and connected thereto. The terminal part 12 has a stopper part 12B protruding downward from the lower surface of the box part 12A. The terminal part 12 is inserted into each cavity 11A from the rear.

[0022] [Structure of movable parts] The movable member 13 is made of synthetic resin. Figure 3 As shown, the movable part 13 is formed as a block that is symmetrical on both sides and is a single part. The movable part 13 has a stopper 13A and an outer wall part 13B. The stopper 13A is formed to be longer in the left-right direction and is arranged at the rear end of the movable part 13. A plurality of stopper parts 13C that protrude upward and are arranged in parallel in the left-right direction are provided on the front side of the upper end of the stopper 13A. These stopper parts 13C are locked with the rear end of the box part 12A of the terminal part 12 inserted into the cavity 11A from the rear (see Fig.11 ).

[0023] The outer wall 13B is plate-shaped and has a plate thickness in the vertical direction. The outer wall 13B is arranged in front of the stopper 13A and is formed integrally with the stopper 13A. The outer wall 13B has a plurality of partition walls 13D, a pair of first stoppers 13E, and a pair of second stoppers 13F.

[0024] The plurality of partition walls 13D are flat plate-shaped with the plate thickness direction oriented in the left-right direction. The partition walls 13D are arranged at equal intervals in the left-right direction and are formed so as to protrude upward from the upper surface of the outer wall portion 13B.

[0025] The pair of first stopper parts 13E are flat plate-shaped and the plate thickness direction is oriented in the left-right direction. The pair of first stopper parts 13E are erected one by one from both side edges in the left-right direction of the front end of the outer wall part 13B. On the left-right outer surface of the pair of first stopper parts 13E, a close position protrusion 13G and a separated position protrusion 13H protruding outward in the left-right direction are provided. The close position protrusion 13G is arranged below the separated position protrusion 13H.

[0026] A pair of second stopper parts 13F are in the shape of a flat plate and the plate thickness direction is oriented in the left-right direction. A pair of second stopper parts 13F are erected one by one from the left-right side edges of the outer wall part 13B. The second stopper parts 13F are arranged at a position of the outer wall part 13B that is more rearward than the first stopper part 13E, that is, a position separated from the first stopper part 13E. A stopper claw 13J that protrudes inward along the left-right direction is arranged at the upper end portion of the inner side of the pair of second stopper parts 13F in the left-right direction. The stopper claw 13J is formed to be longer in the front-back direction and is arranged in a manner along the upper end edge of the second stopper part 13F. The stopper claw 13J is arranged above the approach position protrusion 13G and the separation position protrusion 13H.

[0027] [Installing the movable parts and terminal parts to the housing] The movable member 13 formed in this way is attached to the housing 11 from below. Specifically, the outer wall portion 13B of the movable member 13 is attached to the housing 11 in a manner covering the opening 11F (see FIG. 11 ). Figure 4 At the same time, the stopper 13A of the movable member 13 is inserted from below into the stopper insertion hole 11G (see Figure 5 ).

[0028] First, on the outer wall portion 13B, the pair of first stopper portions 13E are inserted between the pair of protruding portions 11E, and the pair of second stopper portions 13F are arranged to cover the left-right outer sides of the pair of protruding portions 11E. Then, the separation position projections 13H of the first stopper portions 13E pass upward through the stopper claws 11K of the protruding portions 11E and are stoppered with the stopper claws 11K (see Figure 6 At the same time, the temporary locking protrusion 11J of the extension portion 11E passes downward through the locking claw 13J of the second locking portion 13F and is locked with the locking claw 13J (see Figure 7 ). Thus, the first locking portion 13E and the second locking portion 13F are locked to the housing 11. At this time, the outer wall portion 13B is located below the lance 11B that is not elastically deformed, and is disposed at a separation position separated from the lance 11B (see Figure 8 When the outer wall 13B is in the separated position, a permissible bending space S is formed between the lower surface of the lance 11B and the upper surface of the outer wall 13B, which allows the lance 11B to elastically deform downward (see Figure 8At this time, the gap between the lower surface of the lance 11B and the upper surface of the outer wall 13B is set larger than the dimension required to remove the lance 11B from the terminal fitting 12 .

[0029] like Figure 8 As shown, when the outer wall portion 13B is in the separated position, the locking portion 13C of the stopper 13A does not enter the cavity 11A. At this time, the stopper 13A is arranged at a temporary locking position that allows the terminal fitting 12 to be inserted into the cavity 11A.

[0030] like Figure 4 As shown, when the movable member 13 is mounted on the housing 11, a jig insertion port 10A is formed in an open manner between the front end of the housing 11 and the front end of the outer wall portion 13B. The jig insertion port 10A is formed to be long in the left-right direction. A plurality of partition walls 13D provided on the outer wall portion 13B are arranged to separate the jig insertion port 10A in the left-right direction in a manner corresponding to each cavity 11A. Figure 8 ) is inserted into the jig insertion port 10A from the front. When the outer wall portion 13B is in the separated position, the opening dimension of the jig insertion port 10A in the vertical direction is an insertion possible dimension Sp into which the jig J can be inserted.

[0031] The jig J inserted into the jig insertion port 10A contacts the front end of the lance 11B and can operate the lance 11B to elastically deform the lance 11B downward. When the outer wall 13B is in the separated position, the lance 11B is elastically deformed downward. Figure 8 As shown, the front end of the lance 11B abuts against the upper surface of the outer wall 13B in the separated position within the range of elastic deformation of the lance 11B. In other words, when the lance 11B deforms and contacts the outer wall 13B in the separated position, the stress generated by the elastic deformation of the lance 11B is within the range of the elastic limit of the lance 11B. This prevents the lance 11B from being plastically deformed. The partition 11D of the housing 11 is configured to separate the plurality of insertion holes 11C and the jig insertion port 10A. This prevents the jig J from mistakenly entering the plurality of insertion holes 11C.

[0032] Next, the terminal part 12 is inserted into the cavity 11A with the outer wall 13B in the separated position and the stopper 13A in the temporary locking position. During the insertion of the terminal part 12, the lance 11B is pressed by the box part 12A and the locking part 12B and elastically deformed. When the terminal part 12 reaches the regular insertion position, the lance 11B elastically recovers upward and is locked with the locking part 12B, and the terminal part 12 is kept in the locked state under this locking action.

[0033] Next, the movable member 13 is pushed toward the direction in which the movable member 13 approaches the housing 11 (upward). At this time, the approaching position projection 13G of the first locking portion 13E passes upward through the locking claw 11K of the extension portion 11E of the housing 11 and is locked with the locking claw 11K (see Fig. 9 At the same time, the actual locking protrusion 11H of the extension portion 11E of the housing 11 passes downward through the locking claw 13J of the second locking portion 13F and is locked with the locking claw 13J (see Fig.10 ). Therefore, if Fig.11 As shown, the outer wall portion 13B is arranged at the approach position, and at the approach position, the outer wall portion 13B approaches the lance 11B, suppresses the downward elastic deformation of the lance 11B, and maintains the state in which the lance 11B is locked with the stopper 12B of the terminal part 12. The gap between the lower surface of the lance 11B at the approach position and the upper surface of the outer wall portion 13B is set smaller than the dimension required to remove the lance 11B from the terminal part 12. The movement direction of the outer wall portion 13B between the separation position and the approach position is the up-down direction (the bending direction of the lance 11B).

[0034] The stopper 13A is deeply inserted into the stopper insertion hole 11G. The locking portion 13C of the stopper 13A is arranged adjacent to the rear of the rear end of the box portion 12A of the terminal part 12 inserted into the regular position in the cavity 11A. Thus, when the outer wall portion 13B is in the approach position, the stopper 13A is arranged in the formal locking position, and in the formal locking position, the stopper 13A is locked with the terminal part 12 inserted into the regular position in the cavity 11A to prevent the terminal part 12 from slipping out.

[0035] At this time, the opening dimension of the jig insertion port 10A in the vertical direction is smaller than the insertion possible dimension Sp when the outer wall portion 13B is in the separated position. Therefore, the insertion of the jig J into the jig insertion port 10A can be suppressed. When the outer wall portion 13B is in the close position, the opening dimension of the jig insertion port 10A in the vertical direction is smaller than the insertion possible dimension Sp when the outer wall portion 13B is in the separated position, and is the insertion suppression dimension Ss at which the insertion of the jig J is suppressed.

[0036] Next, the operation of the first embodiment will be described. The connector 10 disclosed in the present invention includes a housing 11, a lance 11B, an opening 11F, and an outer wall 13B. The housing 11 has a cavity 11A for inserting a terminal part 12. The lance 11B is locked with the terminal part 12 inserted into the cavity 11A to prevent the terminal part 12 from coming out, and is elastically deformable. The opening 11F is opened on the outer wall surface of the housing 11, and the lance 11B can be exposed on the outer wall surface. The outer wall 13B is installed on the housing 11 in a manner covering the opening 11F. The outer wall 13B moves between a separation position and an approach position. In the separation position, the outer wall 13B is separated from the lance 11B and allows the lance 11B to deform elastically. In the approach position, the outer wall 13B approaches the lance 11B to suppress the elastic deformation of the lance 11B and maintain the state where the lance 11B is locked with the terminal part 12. According to this structure, when the terminal part 12 is inserted into or removed from the cavity 11A, the outer wall part 13B is moved to the separation position to form a space in which the lance 11B can be elastically deformed. Then, after the terminal part 12 is inserted into the regular position in the cavity 11A, the outer wall part 13B is moved to the approach position to eliminate the space in which the lance 11B is elastically deformed. Thus, it is possible to suppress the formation of a useless area in the housing 11 after the terminal part 12 is inserted into the cavity 11A.

[0037] The connector 10 of the present disclosure also includes a stopper 13A mounted on the housing 11. The outer wall portion 13B is formed integrally with the stopper 13A, and when the outer wall portion 13B is in the separated position, the stopper 13A is configured in a temporary locking position, and in the temporary locking position, the stopper 13A allows the terminal part 12 to be inserted into the cavity 11A. When the outer wall portion 13B is in the approach position, the stopper 13A is configured in a formal locking position, and in the formal locking position, the stopper 13A is locked with the terminal part 12 inserted into the regular position in the cavity 11A to prevent the terminal part 12 from coming out. According to this structure, since the outer wall portion 13B is formed integrally with the stopper 13A, the outer wall portion 13B and the stopper 13A can be moved together. Thus, the two functions of suppressing the elastic deformation of the lance 11B and the formal locking of the terminal part 12 can be achieved by one action.

[0038] In the connector 10 of the present disclosure, a jig insertion port 10A is opened between the front end of the housing 11 and the front end of the outer wall portion 13B, into which a jig J for operating the lance 11B is inserted. When the outer wall portion 13B is in the separated position, the opening dimension of the jig insertion port 10A in the moving direction of the outer wall portion 13B between the separated position and the approach position is an insertion possible dimension Sp into which the jig J can be inserted. When the outer wall portion 13B is in the approach position, the opening dimension is an insertion suppression dimension Ss in which the insertion of the jig J is suppressed. According to this structure, the insertion of the jig J can be suppressed when the outer wall portion 13B is in the approach position and the elastic deformation of the lance 11B is suppressed.

[0039] In the connector 10 of the present disclosure, the housing 11 has a plurality of cavities 11A, and the outer wall portion 13B has partition walls 13D that partition the jig insertion port 10A in a manner corresponding to the respective cavities 11A. With this structure, the jig J can be easily and reliably inserted into a desired cavity 11A.

[0040] In the connector 10 of the present disclosure, an insertion hole 11C is formed through the front end of the housing 11 for inserting the terminal part T of the other side into the cavity 11A, and a partition 11D is provided to separate the insertion hole 11C and the jig insertion port 10A. According to this structure, the partition 11D can prevent the jig J from being inserted into the cavity 11A by mistake.

[0041] The outer wall portion 13B of the connector 10 of the present disclosure is arranged forward of the stopper 13A, that is, at the front end of the housing 11. A first stopper 13E is provided at the front end of the outer wall portion 13B to be locked with the housing 11. A second stopper 13F is provided at a position of the outer wall portion 13B further back than the first stopper to be locked with the housing 11. According to this structure, the front end of the outer wall portion 13B can be locked with the housing 11 by the first stopper 13E, so as to suppress the instability of the position of the front end of the outer wall portion 13B relative to the housing 11.

[0042] In the connector 10 of the present disclosure, when the lance 11B is deformed and contacts the outer wall 13B in the separated position, the stress generated when the lance 11B is elastically deformed is within the elastic limit of the lance 11B. According to this structure, the lance 11B can be prevented from being plastically deformed (the deformed state of the lance 11B is maintained unchanged).

[0043] [Other embodiments of the present disclosure] The present disclosure is not limited to the first embodiment described in the above description and drawings. The present invention includes all modifications equivalent to the meaning of the claims and within the claims, and also intentionally includes the following embodiments. (1) Different from the first embodiment, a configuration in which the first locking portion is not provided and only the second locking portion is provided may be adopted. (2) The terminal part may also be a male terminal part. (3) The number of cavities is not limited to that in the first embodiment. (4) Unlike the first embodiment, a structure in which the movable member and the housing are integrally formed so as to be connected by a bendable hinge may be adopted. Description of Reference Numerals

[0044] 10…Connector 10A...Jig insertion port 11…Housing 11A...Cavity 11B…Spear 11C…Through hole 11D…Separator 11E…Extension 11F…Opening 11G…Stopper insertion hole 11H…Formal locking protrusion 11J…Temporary stop protrusion 11K…Lock claw 12…Terminal parts 12A…Box 12B…Anti-slip part 13…Moving parts 13A…Stop 13B…Outer wall 13C…Locking part 13D…partition wall 13E…1st stopper 13F…Second stopper 13G…Proximity position protrusion 13H… Separation position protrusion 13J…Lock claw 31…Wire J...Jig S…Allowable deflection space Sp… possible insertion size Ss…Insertion suppression size T…Terminal parts on the other side

Claims

1. A connector having: A housing having a cavity for inserting the terminal parts; A lance-shaped portion, which is engaged with the terminal part inserted into the cavity to prevent the terminal part from coming out and is elastically deformable; An opening portion is opened on the outer wall surface of the housing so as to allow the spear-shaped portion to be exposed on the outer wall surface; as well as an outer wall portion, mounted on the housing in a manner covering the opening portion, The outer wall portion moves between a separated position and an approached position, In the separated position, the outer wall portion is separated from the lance portion to allow the lance portion to deform elastically. At the approach position, the outer wall portion approaches the lance to suppress elastic deformation of the lance, and maintains a state in which the lance and the terminal fitting are locked.

2. The connector according to claim 1, wherein: A stopper is also provided on the housing. The outer wall portion is formed integrally with the stopper, When the outer wall portion is in the separated position, the stopper is arranged in a temporary stop position, in which the stopper allows the terminal part to be inserted into the cavity. When the outer wall portion is in the approach position, the stopper is arranged at a formal locking position, and at the formal locking position, the stopper is locked with the terminal part inserted into the cavity at a regular position to prevent the terminal part from coming out.

3. The connector according to claim 1 or claim 2, wherein: A jig insertion port for inserting a jig for operating the lance is opened between the front end of the housing and the front end of the outer wall. When the outer wall portion is at the separated position, the opening size of the jig insertion port in the moving direction of the outer wall portion between the separated position and the approach position is an insertion possible size into which the jig can be inserted, When the outer wall portion is at the close position, the opening dimension is an insertion inhibiting dimension that inhibits insertion of the jig.

4. The connector according to claim 3, wherein: The housing has a plurality of cavities. The outer wall portion has a partition wall that partitions the jig insertion port in a manner corresponding to each cavity.

5. The connector according to claim 3, wherein: An insertion hole for inserting a mating terminal component into the cavity is formed through the front end portion of the housing, and a partition portion is provided to partition the insertion hole and the jig insertion port.

6. The connector according to claim 2, wherein: The outer wall portion is arranged in front of the stopper, that is, at the front end portion of the housing. A first locking portion that is locked with the housing is provided at the front end of the outer wall portion. A second locking portion that is locked with the housing is provided at a position of the outer wall portion rearward of the first locking portion.

7. The connector according to claim 1 or claim 2, wherein: When the lance is deformed and contacts the outer wall portion at the separated position, stress generated when the lance is elastically deformed is within the range of the elastic limit of the lance.

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