JP2018185888A - connector - Google Patents

Abstract

Provided is a connector that can stabilize the holding of a terminal and can maintain the rigidity of a connecting portion. A housing having a terminal accommodating chamber, a terminal connected to a terminal portion of an electric wire and accommodated in the terminal accommodating chamber, and a latching lance provided in the terminal accommodating chamber so as to be bent. In the connector 1 including the terminal 9, the terminal 9 is provided with a box-like connection portion 13 that is locked to the locking lance 11, and the locking projection 15 is provided on the locking lance 11. The locking surface 17 and the locking projection 15 are inclined so as to increase the thickness of the locking projection 15 within the range of the locking surface 17 from the distal end of the locking projection 15 toward the proximal end side of the locking lance 11. A locking projection 23 that can be engaged with the locking surface 17 by striking the opposing wall 21 toward the locking projection 15 and facing the locking wall 17. Is provided toward the inside of the connecting portion 13 to provide a wall surface recess 25 that can accommodate the locking projection 15. [Selection] Figure 1

Description

  The present invention relates to a connector. In detail, it is related with the connector which has the latching lance which latches the terminal accommodated in a terminal storage chamber.

  Conventionally, as a connector, a housing provided with a cavity as a terminal accommodating chamber, a terminal connected to a terminal portion of an electric wire drawn out from the housing and accommodated in the cavity, and a latch provided in the cavity so as to be deflectable There is known a lance and a box-like connecting portion provided on a terminal and locked to a locking lance in the direction of drawing out an electric wire (see, for example, Patent Document 1).

  In this connector, an opposing wall facing the locking lance and both side walls located on both sides of the opposing wall are opened so that the free end side of the locking lance can be inserted into the box-shaped connection portion of the terminal. A lance receiving part is provided.

  In such a connector, when the locking lance is restored, the free end side of the locking lance is inserted into the lance receiving portion of the connecting portion, thereby preventing the terminal from coming off from the cavity.

JP 2013-218902 A

  By the way, in the connector like the above-mentioned patent document 1, the end of the lance receiving portion facing the free end of the locking lance contacts the free end of the locking lance so that the terminal is prevented from coming off from the terminal accommodating chamber. It is carried out.

  However, in such contact between the end of the lance receiving portion and the free end of the locking lance, when a tensile force is applied to the electric wire, the end of the lance receiving portion is thin on the free end side of the locking lance. It touches the part.

  In such a contact of the thin wall portion on the free end side of the locking lance of the lance receiving portion, the resistance against the shearing force of the terminal due to the pulling of the electric wire is low, and deformation or the like occurs on the free end side of the locking lance and the terminal There was a risk of holding unstable.

  On the other hand, in the connector as described in Patent Document 1, the lance receiving portion is provided by opening the opposing wall and both side walls facing the locking lance of the box-shaped connecting portion. The rigidity of the connection part is reduced.

  In addition, the bottom wall of the lance receiving part is a part formed by bending the side wall toward the opposite wall side, and the connecting part between the bottom wall and the side wall is a single surface, so the rigidity is low, and the engagement is low. There was a risk of deformation due to contact with the free end side of the stop lance.

  Accordingly, an object of the present invention is to provide a connector that can stabilize the holding of the terminal and can maintain the rigidity of the connecting portion.

  The invention according to claim 1 is a housing provided with a terminal accommodating chamber, a terminal connected to a terminal portion of an electric wire drawn out from the housing and accommodated in the terminal accommodating chamber, and bendable to the terminal accommodating chamber. A locking lance provided on the terminal, a box-like connecting portion provided on the terminal and locked to the locking lance in the direction of drawing out the electric wire, and a connecting portion provided on the free end side of the locking lance. A locking projection provided toward the side, a locking surface provided on a surface of the locking lance on the free end side of the locking lance, and a locking lance of the locking projection. Provided on the base end surface and inclined from the distal end of the locking projection toward the proximal end side of the locking lance so as to increase the thickness of the locking projection within the range of the locking surface. Provided on an opposing wall facing the inclined surface and the locking projection of the connecting portion. A locking projection that can be driven out toward the protruding portion and engageable with the locking surface, and a locking protrusion that is provided on the opposing wall and is driven out toward the inner side of the connecting portion to accommodate the locking protruding portion It is a connector characterized by having a wall surface recess that is possible.

  In this connector, the surface of the locking projection on the proximal end side of the locking lance is formed on the surface of the locking projection within the range of the locking surface from the distal end of the locking projection toward the proximal end of the locking lance. Since the inclined surface inclined so as to increase the thickness is provided, the thickness of the locking projection in the drawing direction of the electric wire is increased from the tip toward the base side within the range of the locking surface.

  With respect to this locking projection, a locking projection is provided on the opposing wall facing the locking projection of the connecting portion so that the opposing wall is driven out toward the locking projection and can be engaged with the locking surface. Therefore, when a tensile force is applied to the electric wire, the locking projection comes into contact with a portion of the locking surface where the thickness of the locking projection is increased.

  For this reason, the proof stress with respect to the shearing force of the terminal caused by the pulling of the electric wire can be increased, the deformation of the locking projection can be prevented, and the holding of the terminal can be stabilized.

  Further, since the opposing wall of the connecting portion is provided with a wall surface recess so that the opposing wall can be driven out toward the inside of the connecting portion and the locking projection can be accommodated, the locking projection is accommodated in the wall surface recess. Thus, the locking projection can be brought into contact with the portion of the locking surface where the thickness of the locking projection is further increased, and the holding of the terminal can be further stabilized.

  Furthermore, since the wall surface recess is provided by projecting the opposing wall toward the inside of the connecting portion, the opposing wall and both side walls of the connecting portion do not open, and the rigidity of the connecting portion can be maintained. it can.

  In addition, since the wall surface recess is provided by projecting the opposing wall toward the inner side of the connecting portion, the three surfaces of the bottom wall of the wall surface recess are connected to the opposing wall except the surface on the locking projection side. In addition, the rigidity of the connecting portion can be maintained.

  Therefore, in such a connector, the holding of the terminals can be stabilized, and the rigidity of the connecting portion can be held.

  The invention according to claim 2 is the connector according to claim 1, wherein the connector is disposed on the inner surface side of the connection portion of the opposing wall, has a contact portion on the free end side, and is elastically deformable inside the connection portion. It has the elastic piece provided, and the fulcrum part which contact | abuts between the free end side of the said elastic piece, and the base end side provided in the edge part which the wall surface recessed part was struck out.

  In this connector, a fulcrum portion that abuts between the free end side and the base end side of the elastic piece is provided at the end portion where the wall surface recess is struck, so the distance between the contact portion and the fulcrum portion is shortened. And the contact pressure of the contact portion by the elastic piece can be increased.

  According to the present invention, it is possible to provide a connector that can stabilize the holding of the terminal and can maintain the rigidity of the connecting portion.

It is sectional drawing of the connector which concerns on embodiment of this invention. It is a principal part expanded sectional view of the connector which concerns on embodiment of this invention. It is sectional drawing of the housing of the connector which concerns on embodiment of this invention. It is a perspective view of the terminal of the connector concerning an embodiment of the invention. It is a perspective view of the terminal of the connector concerning an embodiment of the invention. It is a side view of the terminal of the connector concerning an embodiment of the invention.

  A connector according to an embodiment of the present invention will be described with reference to FIGS.

  The connector 1 according to the present embodiment includes a housing 5 provided with a terminal accommodating chamber 3, a terminal 9 connected to a terminal portion of an electric wire 7 drawn out from the housing 5 and accommodated in the terminal accommodating chamber 3, A locking lance 11 is provided in the terminal accommodating chamber 3 so as to be bent.

  Further, the terminal 9 is provided with a box-shaped connecting portion 13 that is locked to the locking lance 11 in the drawing direction of the electric wire 7, and the free end side of the locking lance 11 is directed toward the connecting portion 13. A locking projection 15 is provided to project.

  Furthermore, a locking surface 17 is provided on the surface of the locking projection 15 on the free end side of the locking lance 11, and the locking projection 15 has a locking surface on the proximal end surface of the locking lance 11. An inclined surface 19 is provided so as to increase the thickness of the locking projection 15 within the range of the locking surface 17 from the distal end of the projection 15 toward the proximal end side of the locking lance 11.

  The opposing wall 21 facing the locking projection 15 of the connecting portion 13 is provided with a locking projection 23 that can be pushed out toward the locking projection 15 to engage the locking surface 17. In addition, a wall surface recess 25 is provided in which the opposing wall 21 is driven out toward the inner side of the connecting portion 13 and can accommodate the locking projection 15.

  Further, on the inner surface side of the connection portion 13 of the opposing wall 21, an elastic piece 29 having a contact portion 27 on the free end side and provided inside the connection portion 13 so as to be elastically deformable is disposed, and the wall surface recess 25 is driven out. At the end portion, a fulcrum portion 31 that abuts between the free end side and the base end side of the elastic piece 29 is provided.

  As shown in FIGS. 1-6, the housing 5 consists of insulating materials, such as a synthetic resin, and can be fitted with the other party housing (not shown).

  The housing 5 is provided with a lock arm 33 provided with a lock portion (not shown) that holds the mating state with the mating housing so as to be able to bend. By engaging with the housing, the mating state between the mating housing and the housing 5 is maintained.

  An operation portion 35 is provided on the free end side of the lock arm 33. By pressing the operation portion 35, the lock arm 33 is bent, and the engagement between the lock portion and the locked portion is released. The fitting state between the mating housing and the housing 5 can be released.

  Such a housing 5 is provided with a plurality of terminal accommodating chambers 3 and is accommodated in a plurality of mating terminals (not shown) accommodated in the mating housing and a plurality of terminal accommodating chambers 3 by fitting with the mating housing. The plurality of terminals 9 are electrically connected.

  The terminal accommodating chamber 3 has an insertion opening 37 into which one end in the length direction is inserted, and the other end in the length direction is a male terminal of a mating terminal connected to the terminal 9 accommodated therein. This is a connection opening 39 into which a tab-like connection portion (not shown) is inserted.

  In the plurality of terminal accommodating chambers 3, a plurality of terminals 9 are accommodated from insertion openings 37 on one end side in the length direction.

  The terminal 9 is formed of a single member in which the wire connecting portion 41 and the connecting portion 13 are continuous by performing punching or bending on a single plate material made of a conductive material.

  The electric wire connecting portion 41 includes a coated crimping portion 43 and a core wire crimping portion 45.

  The covering crimping portion 43 is composed of a pair of crimping pieces, and crimps the covering portion of the electric wire 7 at the terminal portion of the electric wire 7 connected to a power source or equipment.

  The terminal 9 is fixed to the electric wire 7 by crimping the covering crimping portion 43 to the covering portion of the electric wire 7.

  The core wire crimping portion 45 is composed of a pair of crimping pieces provided between the connecting portion 13 and the covering crimping portion 43, and caulking the core wire portion exposed from the covering portion of the electric wire 7 at the terminal portion of the electric wire 7. Crimped.

  By crimping the core wire crimping portion 45 to the core wire portion of the electric wire 7, the terminal 9 is electrically connected to the electric wire 7.

  The connecting part 13 is formed of a single member whose bottom wall is continuous with the electric wire connecting part 41, and is formed of a female connecting part 13 formed in a box shape by bending both side walls and the opposing wall 21 as an upper wall. .

  Inside the connecting portion 13, the base end side is bent from one side wall toward the facing wall 21 side and arranged on the inner side of the connecting portion 13 of the facing wall 21, and has an elastic portion having a contact portion 27 on the free end side. The piece 29 is provided so as to be elastically deformable so as to have a predetermined urging force.

  Such a connection portion 13 is provided with an opening on one end side in the length direction, and a tab-like connection portion of a mating terminal is inserted into the inside from this opening, and the contact portion 27 is tabbed by the urging force of the elastic piece 29. The terminal 9 and the mating terminal are electrically connected by coming into contact with the connecting portion.

  The terminal 9 having such a box-shaped connecting portion 13 is inserted into the terminal accommodating chamber 3 from the insertion opening 37 of the terminal accommodating chamber 3 in a state where the terminal 9 is connected to the terminal portion of the electric wire 7 via the electric wire connecting portion 41. Then, the electric wire 7 is drawn out of the housing 5 from the insertion opening 37.

  Thus, the terminal 9 accommodated in the terminal accommodating chamber 3 is locked by the locking lance 11 provided in the terminal accommodating chamber 3, thereby preventing the terminal 9 from being removed from the insertion opening 37. The

  The terminal 9 is inserted into the terminal accommodating chamber 3 by contacting the end surface of the connecting portion 13 of the terminal 9 with the wall portion where the connecting opening 39 of the terminal accommodating chamber 3 is provided. Nine or more insertions are restricted.

  The locking lance 11 is formed of one member whose base end side is continuous with one wall portion in the vertical direction of the terminal accommodating chamber 3, the free end side is inclined toward the inside of the terminal accommodating chamber 3, and the tab-shaped connecting portion is formed. It is arranged on the side of the connection opening 39 to be inserted, and is provided so as to be able to bend in the vertical direction in the terminal accommodating chamber 3.

  On the free end side of the locking lance 11, a locking projection 15 that is accommodated in a wall surface recess 25 provided in the terminal 9 and is engaged with the locking projection 23 is a single member that is continuous with the locking lance 11. Projecting toward the inside of the terminal accommodating chamber 3.

  The locking projection 15 protrudes from the wall side of the terminal receiving chamber 3 toward the inner side of the terminal receiving chamber 3 on the free end side of the locking lance 11, and includes a locking surface 17 and an inclined surface 19. Have.

  The locking surface 17 is provided on the free end surface of the locking lance 11 of the locking projection 15 (here, the left surface in FIG. 1).

  The locking surface 17 is slightly inclined in the direction in which the electric wire 7 is drawn from the distal end of the locking projection 15 in the protruding direction toward the base side of the locking projection 15 (inner wall surface side of the terminal accommodating chamber 3). Yes.

  A release wall 47 is extended on the base side of the locking surface 17 toward the connection opening 39 by a single member continuous with the locking lance 11, and a release jig (not shown) is attached to the release wall 47. The terminal 9 can be pulled out from the insertion opening 37 of the terminal accommodating chamber 3 by abutting and bending the locking lance 11.

  The inclined surface 19 is provided on the base end side surface of the locking lance 11 of the locking protrusion 15 (here, the right surface in FIG. 1).

  The inclined surface 19 extends from the distal end of the locking projection 15 toward the proximal end side of the locking lance 11 within the range of the protruding direction in which the locking surface 17 of the locking projection 15 is provided. The portion 15 is inclined so as to increase the thickness of the wire 7 in the drawing direction.

  In this way, by tilting the inclined surface 19 within the range of the locking surface 17, the portion of the locking surface 17 located on the base side of the locking projection 15 is locked to the locking projection of the locking surface 17. It is possible to increase the thickness of the locking projection 15 in the direction in which the electric wire 7 is pulled out, that is, to increase the strength, from the portion located on the distal end side of the 15.

  The locking projection 15 having such a locking surface 17 and the inclined surface 19 is accommodated in a wall surface recess 25 provided in the connection portion 13 of the terminal 9, and the locking surface 17 is engaged with the locking projection 23. Arranged as possible.

  A locking projection 23 and a wall surface recess 25 are provided on the opposing wall 21 facing the locking projection 15 of the box-shaped connecting portion 13 of the terminal 9.

  The locking projection 23 is formed on the opposite wall 21 of the connecting portion 13 with the central portion in the width direction of the portion located on the locking surface 17 side of the locking projection 15 as the locking projection 15 side, that is, the connecting portion. It is provided by striking toward the outside of 13.

  The locking projections 23 are disposed so as to be engageable with the locking surface 17 of the locking projection 15 and the drawing direction of the electric wire 7 in a state in which the terminal 9 is disposed at the normal position of the terminal accommodating chamber 3. The

  By disposing the locking projection 23 in such a manner as to be engageable with the locking surface 17 of the locking projection 15, the locking projection 23 contacts the locking surface 17 when a tensile force is applied to the electric wire 7. The terminal 9 can be prevented from coming out of contact with the terminal accommodating chamber 3.

  Such a locking projection 23 is provided by striking the opposing wall 21 of the connecting portion 13 toward the locking projection 15, so that the wire 7 of the locking projection 15 is pulled out on the locking surface 17. The locking protrusion 23 can be disposed so as to be engageable with a portion having a large thickness in the direction.

  For this reason, when a tensile force is applied to the electric wire 7, the locking projection 23 is brought into contact with the portion of the locking surface 17 where the thickness of the locking projection 15 increases, that is, the strength of the locking projection 15 is high. The contact strength can be increased, and the resistance to the shearing force of the terminal 9 caused by the pulling of the electric wire 7 can be increased.

  In addition, the locking surface 17 of the locking projection 15 is inclined when the locking projection 23 comes into contact with the locking surface 17 because the base side of the locking projection 15 is inclined in the drawing direction of the electric wire 7. Then, a force is applied in a direction in which the locking lance 11 is bent toward the inner side of the connecting portion 13.

  For this reason, when the tensile force is applied to the electric wire 7, the locking projection 23 can stably come into contact with the portion of the locking surface 17 where the thickness of the locking projection 15 is increased.

  The wall surface recessed portion 25 is driven out toward the inner side of the connecting portion 13 on the opposing wall 21 of the connecting portion 13, the tip in the protruding direction of the locking protrusion 15 and the central portion in the width direction of the portion located on the inclined surface 19 side. Is provided.

  The wall surface recess 25 accommodates the distal end side in the projecting direction of the locking projection 15 in a state where the terminal 9 is disposed at the normal position of the terminal accommodating chamber 3.

  By housing the locking projection 15 in the wall surface recess 25 in this manner, the locking projection 23 is disposed on the locking surface 17 so as to be engageable with a portion where the thickness of the locking projection 15 is increased. be able to.

  Such a wall recess 25 is provided by punching the opposing wall 21 of the connecting portion 13 toward the inside of the connecting portion 13, so that a large opening is formed in the opposing wall 21 and both side walls constituting the connecting portion 13. The locking projection 15 can be accommodated without doing so.

  For this reason, since a large opening is not formed in the box-shaped connecting portion 13, the rigidity of each wall portion is maintained, the rigidity of the connecting portion 13 can be maintained, and foreign matter in the connecting portion 13 can be maintained. Can be prevented.

  In addition, since the bottom wall of the wall surface recess 25 is provided by punching out the opposing wall 21, the surface on the wire connecting portion 41 side and the connecting portion 13 on the opposing wall 21 excluding the surface on the locking projection 23 side. Three sides of each side of the both side walls are connected to the opposing wall 21.

  For this reason, by providing the wall surface recessed part 25 in the connection part 13, the rigidity of the part in which the wall surface recessed part 25 was provided does not fall, but the rigidity of the connection part 13 can be hold | maintained.

  A fulcrum portion 31 is provided at the end portion of the wall surface recessed portion 25 on the side of the electric wire connecting portion 41.

  When the fulcrum part 31 is provided with the wall surface recessed part 25, the wire connection part 41 side of the wall surface recessed part 25 protruding toward the inside side of the connection part 13 when the opposing wall 21 is driven out toward the inside side of the connection part 13 is provided. It is the end of.

  The fulcrum part 31 abuts between the free end side of the elastic piece 29 where the contact part 27 is provided and the base end side connected to one side wall of the connection part 13, and the contact part 27 is the counterpart terminal. It becomes a fulcrum of the elastic piece 29 when it contacts the tab-shaped connecting portion.

  By providing the fulcrum part 31 in this way, the distance between the contact part 27 and the fulcrum part 31 can be shortened, the contact pressure of the contact part 27 by the elastic piece 29 is increased, and the connection reliability between the counterpart terminal and the terminal 9 is increased. Can be improved.

  In addition, by using the end portion of the wall surface concave portion 25 provided by punching out the opposing wall 21 as the fulcrum portion 31, the increase in the number of components and the complexity of the structure can be avoided, and the contact portion 27 by the elastic piece 29 can be used. The contact pressure can be increased.

  In the connector 1 configured as described above, the terminal 9 is accommodated in the terminal accommodating chamber 3 from the insertion opening 37 of the terminal accommodating chamber 3 of the housing 5, and the distal end side of the connecting portion 13 is inserted while sliding with the locking lance 11. By doing so, the locking lance 11 is bent.

  When the terminal 9 is arranged at the normal position in the terminal accommodating chamber 3, the locking lance 11 is restored, the locking projection 15 is received in the wall surface recess 25 of the connection portion 13, and the locking projection 15 The locking surface 17 is disposed so as to be engageable with the locking projection 23, and the terminal 9 is prevented from coming off from the terminal accommodating chamber 3.

  When a tensile force is applied to the electric wire 7 in a state where the terminal 9 is accommodated in the terminal accommodating chamber 3, the engaging protrusion 23 comes into contact with the engaging surface 17 of the engaging protrusion 15, and the terminal 9 is in the terminal accommodating chamber 3. Never get out of it.

  At this time, the locking projection 23 is in contact with a portion of the locking surface 17 of the locking projection 15 that is thick in the pull-out direction of the wire 7 of the locking projection 15. The terminal 9 can be stably held in the terminal accommodating chamber 3 without deformation or the like in 15.

  In such a connector 1, the range of the locking surface 17 from the distal end of the locking projection 15 toward the proximal side of the locking lance 11 on the surface of the locking projection 15 on the proximal end side of the locking lance 11. Since the inclined surface 19 is provided so as to increase the thickness of the locking projection 15 in the inside, the thickness of the locking projection 15 in the drawing direction of the electric wire 7 is within the range of the locking surface 17. It is increased from the tip toward the base side.

  With respect to the locking projection 15, the opposing wall 21 facing the locking projection 15 of the connecting portion 13 is driven out toward the locking projection 15 to engage the locking surface 17. Since the locking projections 23 are provided as possible, when the tensile force is applied to the electric wire 7, the locking projections 23 hit the portions of the locking surfaces 17 where the thickness of the locking projections 15 has increased. Touched.

  For this reason, the proof stress with respect to the shearing force of the terminal 9 by the pulling of the electric wire 7 can be increased, the deformation of the locking projection 15 can be prevented, and the holding of the terminal 9 can be stabilized.

  Further, the wall 21 is provided with a wall recess 25 so that the locking wall 15 can be accommodated by striking the facing wall 21 toward the inner side of the connection 13. By accommodating the locking projection 15, the locking projection 23 can be brought into contact with a portion of the locking surface 17 where the thickness of the locking projection 15 is further increased, thereby further holding the terminal 9. Can be stabilized.

  Further, since the wall surface recess 25 is provided by projecting the opposing wall 21 toward the inside of the connecting portion 13, the opposing wall 21 and both side walls of the connecting portion 13 do not open, and the connecting portion 13 Stiffness can be maintained.

  In addition, since the wall surface recess 25 is provided by projecting the opposing wall 21 toward the inside of the connecting portion 13, the three surfaces of the bottom wall of the wall surface recess 25 are opposed to each other except the surface on the locking projection 23 side. It is connected to the wall 21 and can further maintain the rigidity of the connecting portion 13.

  Therefore, in such a connector 1, the holding of the terminal 9 can be stabilized, and the rigidity of the connecting portion 13 can be held.

  Moreover, since the fulcrum part 31 which contact | abuts between the free end side of the elastic piece 29 and the base end side is provided in the edge part which the wall surface recessed part 25 was struck, between the contact part 27 and the fulcrum part 31 The distance can be shortened, and the contact pressure of the contact portion 27 by the elastic piece 29 can be increased.

  In the connector according to the embodiment of the present invention, the thickness of the bottom wall of the wall surface recess is set to be equal to the thickness of the wall portion constituting the connection portion. The wall thickness may be set thinner than the wall thickness of the wall portion constituting the connecting portion.

  In this case, the wall surface recess that accommodates the locking projection is formed deeper, the locking projection is received deeper in the wall surface recess, and the locking projection is further inserted on the locking surface. The part can be brought into contact with the thick part.

DESCRIPTION OF SYMBOLS 1 ... Connector 3 ... Terminal accommodation chamber 5 ... Housing 7 ... Electric wire 9 ... Terminal 11 ... Locking lance 13 ... Connection part 15 ... Locking protrusion 17 ... Locking surface 19 ... Inclined surface 21 ... Opposite wall 23 ... Locking protrusion 25 ... Wall surface concave part 27 ... Contact part 29 ... Elastic piece 31 ... Supporting point part

Claims (2)

A housing provided with a terminal accommodating chamber;
A terminal connected to a terminal portion of an electric wire drawn out from the housing and accommodated in the terminal accommodating chamber;
A locking lance provided in the terminal accommodating chamber so as to be deflectable;
A box-shaped connection portion provided in the terminal and locked to the locking lance in the direction of drawing out the electric wire;
A locking projection provided on the free end side of the locking lance and protruding toward the connecting portion;
A locking surface provided on a surface of the locking projection on the free end side of the locking lance;
The locking projection is provided on the surface of the locking projection on the proximal end side of the locking lance, and the locking projection is within the range of the locking surface from the distal end of the locking projection toward the proximal end of the locking lance. An inclined surface inclined to increase the thickness of the part;
A locking projection provided on an opposing wall facing the locking projection of the connecting portion, the locking projection being able to strike the opposing wall toward the locking projection and engage the locking surface;
A wall surface recess that is provided on the opposing wall and that can project the opposing wall toward the inner side of the connecting portion to accommodate the locking projection;
A connector comprising: The connector according to claim 1,
An elastic piece disposed on the inner surface side of the connection portion of the opposing wall and having a contact portion on the free end side and provided inside the connection portion so as to be elastically deformable;
A fulcrum portion provided at a projected end of the wall surface recess and contacting between a free end side and a base end side of the elastic piece;
A connector comprising:

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