JP5644682B2 - connector - Google Patents

Description

  The present invention relates to a connector.

  For example, a connector described in Patent Document 1 is known as a connector in which an electric wire is fixed inside a connector housing. This comprises a retainer made of synthetic resin that is fixed to the outer sheath of the electric wire, and a connector housing in which an electric wire accommodation hole that can accommodate the retainer is formed.

  The retainer is fixed to the electric wire by causing a pair of holding projections provided on the inner surface of the retainer to bite into the outer sheath of the electric wire, while being provided in the retaining recess provided on the outer surface of the retainer and the electric wire receiving hole. By locking the retaining protrusion, it is prevented from slipping out of the wire accommodation hole. Thus, the retainer fixed to the electric wire is held by the connector housing, so that the electric wire is fixed to the connector housing.

JP 2010-225371 A

  However, in the above connector, since the retainer is fixed to the electric wire by causing the pair of holding protrusions to bite into the outer sheath of the electric wire, the holding force of the retainer with respect to the electric wire is low. Further, since the synthetic resin-made holding projection is bitten into the synthetic resin-made outer coating, the holding projection is easy to slide with respect to the outer coating.

  In addition, in order to lock the retainer to the connector housing, the retaining projection and the retaining recess are forcibly fitted, so-called forcible fitting, and the retaining projection is prevented from being crushed. It is necessary to reduce the stoppage.

  Thus, according to the connector described above, the retainer holding force with respect to the electric wire and the retainer holding force with respect to the connector housing are low, and if the electric wire is pulled strongly in the pulling direction, the electric wire may be pulled out from the connector housing.

  This invention is completed based on the above situations, Comprising: It aims at controlling that an electric wire is pulled out from a connector housing.

As a means for achieving the above object, the present invention is a connector in which an electric wire is held and fixed inside a connector housing, and an electric wire receiving hole provided through the inside of the connector housing in the front-rear direction; A locking portion provided on the inner surface of the electric wire housing hole, a metal caulking member that is caulked so as to bite into an outer sheath of the electric wire, and an inner surface of the electric wire housing hole and the caulking member. A fixing portion that is held and fixed to the caulking member, and is provided on the fixing portion so as to be elastically deformable toward the electric wire side, and is pressed against the inner surface of the electric wire accommodation hole when the electric wire is inserted into the electric wire accommodation hole from behind. And is elastically deformed to the electric wire side, and when the electric wire reaches a regular insertion position, the electric wire is elastically restored and includes a locking piece that is engaged with the engaging portion from the front , The caulking member An accommodation groove that can be locked in the front-rear direction with the caulking member is formed by accommodating, and the locking portion is formed to be recessed in a direction intersecting the axial direction of the wire receiving hole, and the lock A locking claw that protrudes in a direction away from the electric wire and can be engaged with the engaging portion from the front is formed at the tip of the piece, and the fixing portion is applied to the inner surface of the electric wire receiving hole from the rear. It has a feature in that a front stop portion is formed .

According to the connector having such a structure, since the fixing portion is held and fixed to the metal caulking member firmly caulked to the outer sheath of the electric wire, the synthetic resin protrusion on the outer sheath of the electric wire as in the past It is possible to improve the holding force of the fixing portion with respect to the electric wire rather than locking the fixing portion to the electric wire by biting in. Thereby, it can control reliably that a fixed part shifts in the direction of order with respect to an electric wire.
Further, by locking the lock piece provided in the fixing portion from the front to the locking portion of the electric wire accommodation hole, it is possible to restrict the fixing portion from coming out from the electric wire accommodation hole rearward. Thereby, it can control that an electric wire is pulled out from a connector housing.
In addition, the lock piece is elastically deformed during the insertion process of the electric wire, and is elastically restored, so that the lock piece is locked from the front to the locking portion of the electric wire receiving hole. Compared to the case where the convex portion and the concave portion are forcibly fitted as in the conventional case. Thus, it is not necessary to reduce the locking allowance between the locking portion and the lock piece. Moreover, it can prevent that a locking margin becomes small because a lock piece is crushed. Thereby, the latching margin which a lock piece latches to a latching part from the front can be enlarged, and the latching force of a latching part and a lock piece can be improved.
In other words, the holding force of the fixing portion with respect to the electric wire can be improved, and the locking force behind the fixing portion with respect to the connector housing can be improved, so that it is possible to reliably regulate the drawing of the electric wire from the connector housing. it can.

In addition , the fixing portion is locked in the front-rear direction with respect to the caulking member to hold and fix the fixing portion to the caulking member, and the locking piece is locked to the locking portion from the front, and the fixing portion becomes the front stop portion. Since it abuts and stops in front, the fixing portion can be held in the wire accommodation hole without moving in the front-rear direction. Thereby, an electric wire can be reliably hold | maintained and fixed in the electric wire accommodation hole of a connector housing.
The following configuration is preferable as an embodiment of the present invention.

The fixed portion may be configured to surround the caulking portion over the entire circumference by a plurality of divided bodies.
According to such a configuration, the fixing part can be attached by attaching the caulking member after connecting the terminal fitting to the end of the electric wire and attaching a plurality of divided bodies. It is not necessary to improve the work efficiency.

The plurality of divided bodies may have the same shape.
According to such a configuration, since the fixed portion can be configured by one type of divided body, the manufacturing cost of the divided body can be reduced as compared to the case where the fixed portion is configured by a plurality of divided bodies having different shapes. Can do. In addition, it is possible to easily manage the parts of the divided body.

The said latching part is good also as a structure which is formed in the front-end opening edge part of the said electric wire accommodation hole, and has faced ahead.
For example, when the locking part is provided near the center in the front-rear direction of the wire accommodation hole, when removing the wire from the connector housing for maintenance etc., insert a jig etc. near the center of the wire accommodation hole. Then, the locking piece is elastically deformed to release the locking state between the locking piece and the locking portion. On the other hand, according to such a configuration, since the locking portion faces the front at the opening edge of the electric wire receiving hole, the jig or the like can be viewed from the front without being inserted into the inner portion of the electric wire receiving hole. The lock piece can be elastically deformed to easily release the locked state between the lock piece and the locking portion.

  According to the present invention, the holding force of the electric wire with respect to the connector housing can be improved.

Connector perspective view Top view of connector Connector side view Bottom view of connector Front view of connector Sectional view taken along line VI-VI in FIG. VII-VII line sectional view of FIG. The principal part expanded sectional view of FIG. The perspective view which showed the state by which the fixing | fixed part was mounted | worn with the electric wire The top view which showed the state where the fixed part was attached to the electric wire Side view showing the fixed part attached to the wire The perspective view which showed the state before attaching a fixing part to an electric wire Rear view of connector housing Enlarged view showing the state where the wire barrel is inserted upside down into the connector housing and the wire barrel and the misassembly prevention part are in contact with each other

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS.
The connector 10 in this embodiment is fitted into a mounting hole (not shown) provided in a case of a device such as an inverter device, for example, and has a plurality of power supplies that supply power to the inverter device from a power supply device such as a battery. It is connected in the middle of the electric wire 40. Further, the connector 10 allows the terminal fitting 41 connected to the end of the electric wire 40 to move freely by passing the electric wire 40 through the connector housing 11, and is connected to a terminal block (not shown) provided in the case. Thus, the terminal fitting 41 can be easily aligned. In the following description, the vertical direction is based on the vertical direction in FIG. 3, the front-rear direction is based on the right side in FIG. 3 as the front, the left side is the rear, and the horizontal direction is based on the horizontal direction in FIG. .

  As shown in FIG. 1, the connector 10 includes a connector housing 11 made of aluminum die cast. As shown in FIGS. 1 and 6, a plurality of wire receiving holes 12 are formed in the connector housing 11 side by side in the left-right direction. Each electric wire accommodation hole 12 is formed to penetrate in the front-rear direction, and the electric wire 40 is individually accommodated in each electric wire accommodation hole 12 in a state of penetrating in the front-rear direction.

  As shown in FIGS. 9 and 10, the electric wire 40 includes a core wire 42 made of a plurality of metal strands and a synthetic resin outer covering 43 covering the core wire 42. A terminal fitting 41 is connected to the terminal.

  The terminal fitting 41 is formed by stamping or bending by pressing. A barrel part 41B for caulking the core wire 42 of the electric wire 40 is formed on one end side of the terminal fitting 41, and a flat connection piece 41A extending forward from the bottom plate of the barrel part 41B is formed on the other end side. ing. The barrel part 41B has a form protruding above the connection piece 41A. Further, the connection piece 41 is formed with a long hole-shaped bolt hole 41 </ b> C penetrating in the plate thickness direction.

  As shown in FIGS. 6 and 7, a rubber plug 13 made of an elastic material is attached to the rear end opening of the wire receiving hole 12. The rubber plug 13 has a shaft hole 14, and an electric wire 40 is inserted through the shaft hole 14. Further, the rubber plug 13 is inserted into the wire receiving hole 12 together with the electric wire 40 so as to be in close contact with the outer peripheral surface of the electric wire 40 and the inner peripheral surface of the electric wire receiving hole 12. Thus, foreign matter such as water and dust is prevented from entering the electric wire housing hole 12 from between the outer peripheral surface of the electric wire 40 and the inner peripheral surface of the electric wire housing hole 12.

  Behind the rubber plug 13 is mounted a rubber plug retainer 15 that prevents the rubber plug 13 from being pulled backward. The rubber plug retainer 15 is formed horizontally in the left-right direction, and collectively prevents the rubber plugs 13 mounted in the electric wire accommodation holes 12 from coming out from the rear. As shown in FIG. 4, a plurality of holding projections 16 project from the outer peripheral surface of the rubber stopper presser 15. The holding protrusion 16 is locked to the inner peripheral surface of a locking hole 17 provided in the rear end opening of the electric wire receiving hole 12, thereby restricting the rubber stopper presser 15 from being pulled backward. Thereby, the rubber stopper 13 is prevented from coming out backward.

  As shown in FIGS. 1 to 3, the connector housing 11 has a front portion serving as a fitting portion 18 that fits into a mounting hole of a case (not shown), and a rear portion serving as a shell mounting portion 19.

  An annular rubber ring 20 made of an elastic material is attached to the outer surface of the fitting portion 18. The rubber ring 20 prevents foreign matters such as water and dust from entering the case through the mounting hole when the connector 10 is fitted into the mounting hole of the case.

As shown in FIGS. 1 and 7, a shield shell 21 is attached to the shell mounting portion 19 from the rear. The shield shell 21 is mounted by fastening a bolt B into a bolt fastening hole (not shown) provided on the upper surface of the shell mounting portion 19.
A pair of fixing pieces 22 are formed at both left and right end portions of the shell mounting portion 19. The fixing piece 22 is provided so as to protrude from the left and right ends of the shell mounting portion 19 in the left-right direction. The fixing piece 22 is formed with a bolt insertion hole 22A penetrating in the vertical direction. A bolt (not shown) is inserted into the bolt insertion hole 22A and tightened into the case to fix the connector housing 11 to the case. Be able to.

Now, as shown in FIGS. 6 to 8, the electric wire 40 is held and fixed in the electric wire receiving hole 12 by a terminal lock 50 disposed between the electric wire 40 and the inner surface of the electric wire receiving hole 12.
Below, the structure which hold | maintains and fixes the electric wire 40 to the connector housing 11 with the terminal lock 50 is demonstrated.

A metal caulking piece (an example of the “caulking member” of the present invention) 44 is caulked to the outer sheath 43 of the electric wire 40, and a terminal lock 50 is attached to the outer periphery thereof.
As shown in FIG. 12, the caulking piece 44 is formed in a cylindrical shape by turning around the electric wire 40 so that the side edges of the substantially rectangular metal plate face each other. Further, as shown in FIG. 8, the caulking piece 44 has an inner peripheral corner portion 44 </ b> A at the front end portion and the rear end portion of the caulking piece 44 that bites into the outer covering 43 of the electric wire 40, and the front end portion and the rear end of the caulking piece 44. The outer peripheral corner 44 </ b> B is caulked so as to slightly protrude outward from the outer coating 43. As a result, the caulking piece 44 is in a state of being firmly fixed to the outer cover as compared with the case where the holding protrusion made of synthetic resin is bitten into the outer cover. Further, the front end face 45 of the caulking piece 44 is orthogonal to the axial direction of the electric wire 40 and is a surface facing forward, and the rear end face 46 of the caulking piece 44 is orthogonal to the axial direction of the electric wire 40, And it is the surface which faced back.

As shown in FIGS. 6 and 8, the terminal lock 50 includes an annular fixed portion 51 and a pair of lock pieces 52 provided integrally with the fixed portion 51.
The fixing portion 51 is formed so as to surround the caulking piece 44 over the entire circumference, and the outer diameter dimension of the fixing portion 51 is substantially the same as the horizontal dimension of the wire receiving hole 12 as shown in FIG. The same dimensions are set.
Further, as shown in FIGS. 9 and 12, the terminal lock 50 is configured by assembling a pair of halves (an example of the “divided body” of the present invention) 53 to each other. One lock piece 52 is formed.

  Both halves 53 have the same shape and are assembled from both sides of the electric wire 40 so as to surround the caulking piece 44 over the entire circumference. That is, the terminal lock 50 is constituted by one kind of half body 53. Therefore, as compared with the case where the terminal lock 50 is configured by a plurality of halves having different shapes, the manufacturing cost of the halves 53 can be reduced and the parts management of the halves 53 can be facilitated. Further, after the terminal fitting 41 is connected to the terminal of the electric wire 40, the terminal lock 50 can be attached to the electric wire 40 by caulking the caulking piece 44 and attaching the half halves 53. It is not necessary to pass through the electric wire 40, and work efficiency can be improved.

  As shown in FIG. 8, an accommodation groove 54 is formed inside the fixed portion 51. A caulking piece 44 protruding from the outer sheath 43 of the electric wire 40 can be accommodated inside the accommodation groove 54, and the inner surface on the front side of the accommodation groove 54 can be locked with the front end face 45 of the caulking piece 44. The rear inner surface of the accommodation groove 54 can be engaged with the rear end surface 46 of the caulking piece 44.

  Therefore, the fixing portion 51 is attached to the electric wire 40 by the front inner surface of the housing groove 54 engaging the front end surface 45 of the caulking piece 44 from the front in a state where the caulking piece 44 is housed in the housing groove 54. And the rear inner surface of the housing groove 54 is locked to the rear end surface 46 of the caulking piece 44 so that it cannot be moved forward with respect to the electric wire 40. The Thereby, the fixing | fixed part 51 can be hold | maintained and fixed so that it cannot move to the electric wire 40 in the front-back direction. As a result, the terminal lock 50 can be held and fixed so as not to move in the front-rear direction with respect to the electric wire 40.

  As shown in FIGS. 10 and 12, the mating portion of the half body 53 is provided with a holding piece 55 on one side and a locking piece 56 provided with a locking hole 56A on the other side. The holding projection 55 is accommodated in the mating locking hole 56 </ b> A and locked with the locking piece 56 in a state where the two halves 53 are assembled to each other. As a result, both halves 53 can be held in the assembled state.

  The lock piece 52 is formed to protrude forward from the outer peripheral edge portion of the front end surface of the fixed portion 51. Further, the lock piece 52 is disposed at the central portion of the arcuate outer peripheral edge of the halved body 53, and can be elastically deformed in a bending space S provided between the electric wire 40 and the lock piece 52. Yes. That is, a pair of lock pieces 52 are arranged on both sides around the electric wire 40 and are elastically deformable toward the electric wire 40 side.

  As shown in FIGS. 8 and 10, a lock claw 57 is formed at the front end of the lock piece 52. The lock claw 57 is formed to project to the opposite side of the electric wire 40 so as to be orthogonal to the axis of the electric wire 40. Further, the lock claw 57 extends obliquely in a direction away from the electric wire 40 from the front end to the rear, extends slightly from the rear end in parallel to the outer surface of the lock claw 57, and further extends from the rear end to the lock piece. 52 extends toward the outer surface of 52. The front inclined surface of the lock claw 57 is an inclined surface 57A, and the rear surface of the lock claw 57 is an engaging surface 57B. As shown in FIG. 8, the dimension “a” between the protruding ends of both lock claws 57 is set larger than the dimension “b” in the left-right direction of the wire housing hole 12. On the other hand, locking recesses (an example of the “locking portion” of the present invention) 23 are formed at both ends in the left-right direction of the front end opening of the wire housing hole 12. The locking recess 23 is recessed in the left-right direction orthogonal to the axis of the wire receiving hole 12 and faces forward.

  As shown in FIG. 8, the lock claw 57 of the lock piece 52 can be accommodated inside the locking recess 23. The rear surface 23 </ b> A of the locking recess 23 is a surface orthogonal to the axis of the wire receiving hole 12, and the locking surface 57 </ b> B of the locking claw 57 is in a state where the locking claw 57 is stored in the locking recess 23. Can be locked from the front. As a result, the lock claw 57 can be locked from the front with respect to the locking recess 23, and the terminal lock 50 can be prevented from coming out from the wire receiving hole 12 backward.

  Moreover, as shown in FIG. 13, the front stop part 24 which protrudes toward an inner side is formed in the upper side and lower side in the inner peripheral surface of the electric wire accommodation hole 12. As shown in FIG. An upper end and a lower end of the front end surface of the fixed portion 51 can be contacted from the rear to the front stop portion 24, and as shown in FIG. Until the front end surface of the fixing portion 51 comes into contact with the front stopping portion 24, and the fixing portion 51 is stopped frontward.

  That is, the terminal lock 50 is held and fixed so as not to be displaced in the front-rear direction with respect to the electric wire 40 by locking the fixing portion 51 with the caulking piece 44 that is caulked to the electric wire 40 in the front-rear direction. The piece 52 is locked to the locking recess 23 from the front, and the fixing portion 51 is brought into contact with the front stop portion 24 from the rear, so that the piece 52 is prevented from coming off in the front-rear direction in the wire receiving hole 12. Yes. Thereby, the electric wire 40 can be reliably held and fixed in the electric wire housing hole 12.

  Further, as shown in FIG. 13, the front stop portion 24 arranged on the lower side has a shape in which both end portions in the left-right direction protrude further inward than the front stop portion 24 arranged on the upper side. Accordingly, when the terminal fitting 41 is turned upside down so that the barrel 41B protrudes below the connection piece 41A and the terminal fitting 41 is inserted into the wire housing hole 12 in an inverted posture, as shown in FIG. In addition, the front end surface of the barrel portion 41B of the terminal fitting 41 hits the front stop portion 24 disposed on the lower side from the rear, so that the terminal fitting 41 cannot be inserted into the wire receiving hole 12 in an inverted posture. Yes.

The present embodiment is configured as described above, and the procedure for attaching the connector 10 will be described.
First, the electric wire 40 to which the terminal fitting 41 is connected is prepared, and the caulking piece is formed so that the inner peripheral corner 44A of the caulking piece 44 bites into the outer covering 43 at a predetermined position of the outer covering 43 as shown in FIG. Caulking 44 with a jig or the like. When the caulking pieces 44 are fixed, both the halves 53 are assembled to the electric wires 40 so as to cover the caulking pieces 44 from both sides of the electric wires 40, and the holding projections 55 and the engaging pieces 56 are engaged. As shown in FIG. 10, the terminal lock 50 is attached to the electric wire 40. At this time, the caulking piece 44 is accommodated in the accommodation groove 54 of the fixing portion 51, and the inner surface on the front side of the accommodation groove 54 in the fixing portion 51 is locked to the front end surface 45 of the caulking piece 44 from the front. The inner surface on the side is locked to the rear end surface 46 of the caulking piece 44 from the rear, whereby the fixing portion 51 is locked in the front-rear direction. Accordingly, the fixing portion 51 is fixed so as not to move in the front-rear direction with respect to the electric wire 40, and the terminal lock 50 is held and fixed to the electric wire 40.

Next, the electric wire 40 to which the terminal lock 50 is attached is inserted into the electric wire receiving hole 12 of the connector housing 11 from behind. At this time, the terminal fitting 41 is inserted in a normal posture in which the barrel portion 41B of the terminal fitting 41 protrudes above the connection piece 41A, and both lock pieces 52 of the terminal lock 50 are located on both sides in the left-right direction centering on the electric wire 40. Insert the terminal lock 50 as shown.
However, when the terminal fitting 41 is to be inserted into the wire receiving hole 12 in the inverted posture (the posture in which the barrel portion 41B protrudes below the connection piece 41A) in which the terminal fitting 41 is turned upside down, as shown in FIG. The front end surface of the barrel portion 41B of the terminal fitting 41 hits the front stop 24 arranged on the lower side from the rear, and the terminal fitting 41 can be restricted from being inserted into the wire receiving hole 12 in an inverted posture. Yes.

  Further, in the process of inserting the electric wire 40, when the terminal lock 50 is inserted into the electric wire receiving hole 12, the inclined surface 57A of the lock claw 57 contacts the rear end opening edge of the electric wire receiving hole 12 and is inclined. The surface 57 </ b> A is pressed by the inner surfaces on both the left and right sides of the wire receiving hole 12. When the electric wire 40 is continuously inserted into the electric wire receiving hole 12, both the locking pieces 52 are elastically deformed to the electric wire 40 side when the inclined surfaces 57A of the both locking claws 57 are pressed from both sides in the left-right direction. By riding on the inner surface of the housing hole 12, the wire is housed in the wire housing hole 12. Then, when the electric wire 40 reaches the proper insertion position, as shown in FIGS. 6 and 8, both the lock claws 57 are elastically restored by being accommodated in the locking recesses 23 of the electric wire accommodation holes 12, and the lock claws 57 The locking surface 57B is locked to the rear surface 23A of the locking recess 23 from behind. Further, as shown in FIG. 7, the front end surface of the fixing portion 51 comes into contact with the front stop portion 24 formed in the wire accommodation hole 12 from the rear. As a result, the fixing portion 51 is prevented from coming off so as not to be displaced in the front-rear direction in the electric wire accommodation hole 12, and the electric wire 40 is securely held and fixed in the electric wire accommodation hole 12.

  Finally, the rubber plug 13 that has been passed through the electric wire 40 is inserted into the rear end opening of the electric wire receiving hole 12, the rubber plug retainer 15 is attached, and the shield shell 21 is further attached from the rear thereof, whereby the connector 10 is completed.

  As described above, according to the present embodiment, the terminal lock 50 is not displaced in the front-rear direction with respect to the electric wire 40 by locking the fixing portion 51 to the caulking piece 44 in the front-rear direction. Can be fixed to. In addition, the locking piece 52 is locked to the locking recess 23 from the front, and the fixing portion 51 is stopped in front by the front stopping portion 24, so that the fixing portion 51 is not displaced in the front-rear direction in the wire receiving hole 12. Can be prevented. Thereby, the electric wire 40 can be reliably held and fixed in the electric wire accommodation hole 12.

  Further, according to the present embodiment, the fixing portion 51 can be held and fixed by locking the fixing portion 51 in the front-rear direction to the metal caulking piece 44 firmly attached to the outer sheath 43 of the electric wire 40. Therefore, the holding force of the fixing portion 51 with respect to the electric wire 40 can be improved as compared with the conventional case where the fixing portion is fixed to the electric wire 40 by causing the outer coating 43 of the electric wire 40 to bite into the outer coating 43.

  In addition, according to the present embodiment, the lock piece 52 is elastically deformed toward the electric wire 40 in the insertion process of the electric wire 40 and is elastically restored to be engaged with the engaging recess 23 of the electric wire housing hole 12 from the front. Thus, it is not necessary to reduce the locking allowance between the locking recess 23 and the lock claw 57 as compared with the case where the protrusion and the recess are forcibly fitted. In addition, if the convex portion and the concave portion are forcibly fitted as in the prior art, the locking claw may be crushed and the locking allowance may be reduced. However, according to the present embodiment, the locking claw 57 is not crushed. It is possible to prevent the stop margin from becoming small. Thereby, the latching margin which the lock piece 52 latches to the latching recessed part 23 from the front can be enlarged, and the latching force of the latching recessed part 23 and the lock piece 52 can be improved.

  That is, according to the present embodiment, the holding force of the terminal lock 50 with respect to the electric wire 40 can be improved and the locking force of the terminal lock 50 with respect to the connector housing 11 can be improved. The holding power of the electric wire 40 with respect to the housing 11 can be improved.

In addition, a configuration in which an accommodation recess is formed in the vicinity of the center in the front-rear direction of the wire accommodation hole 12 and the lock piece 52 and the engagement recess are engaged in the vicinity of the center in the front-rear direction of the wire accommodation hole 12 is also conceivable. When the electric wire 40 is detached from the connector housing 11 for maintenance or the like, the lock piece 52 is elastically deformed by inserting a jig or the like up to the vicinity of the center of the electric wire receiving hole 12, and the lock piece 52 and the locking recess The locked state is released.
On the other hand, according to the present embodiment, the locking recess 23 is formed at the front end opening edge of the electric wire receiving hole 12 and faces forward, so that the electric wire 40 is detached from the connector housing 11. In this case, the lock piece 52 can be elastically deformed from the front without inserting a jig or the like into the inner part of the electric wire receiving hole 12, and the locked state between the lock piece 52 and the locking recess 23 can be easily released. .

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the said embodiment, although it was set as the structure which provided the front stop part 24 in the inner surface of the electric wire accommodation hole 12, for example, the terminal metal fitting 41 is made to stop ahead on the terminal stand side which fastens the terminal metal fitting 41 as a reference example . Thus, the front stop portion 24 may not be formed on the inner surface of the wire receiving hole 12.
(2) In the above embodiment, the connector housing 11 is made of aluminum die-casting. However, the present invention is not limited to such an embodiment. For example, the connector housing 11 may be made of synthetic resin or the like. .
(3) In the above embodiment, the terminal lock 50 is configured by the pair of halves 53, but the present invention is not limited to such a mode, and is configured by, for example, three or four divided bodies. Also good.

(4) In the above embodiment, the caulking piece 44 is accommodated in the accommodating groove 54 of the fixing portion 51 and the fixing portion 51 and the caulking piece 44 are locked. As a reference example , for example, It is good also as a structure which locks a fixing | fixed part and a caulking piece by forming a recessed part and forming the convex part locked to a recessed part in a fixing | fixed part.
(5) In the above embodiment, the pair of lock pieces 52 are provided on the fixing portion 51. However, the present invention is not limited to such an embodiment. For example, one or three fixing portions 51 are provided. It is good also as a structure which provides the above lock piece.
(6) In the above embodiment, the caulking member is configured as a metal plate-shaped caulking piece 44, but the present invention is not limited to such an embodiment. For example, the caulking member may be a ring-shaped caulking ring. Good.

10: Connector 11: Connector housing 12: Electric wire receiving hole 23: Locking recess (locking portion)
24: Front stop 40: Electric wire 44: Caulking piece (caulking member)
51: Fixed part 52: Lock piece 53: Half body (divided body)
54: Housing groove 57: Lock claw

Claims (4)

A connector in which an electric wire is held and fixed inside the connector housing,
An electric wire receiving hole provided through the connector housing in the front-rear direction;
A locking portion provided on the inner surface of the wire receiving hole,
A metal caulking member that is caulked to bite into the outer sheath of the wire;
A fixing portion disposed between the inner surface of the wire receiving hole and the caulking member and held and fixed to the caulking member;
The fixing portion is provided to be elastically deformable toward the electric wire side, and is elastically deformed to the electric wire side by being pressed against the inner surface of the electric wire accommodation hole when the electric wire is inserted into the electric wire accommodation hole from behind. When the electric wire reaches a normal insertion position, the wire is elastically restored and includes a locking piece that is locked to the locking portion from the front ,
The fixing portion is formed with an accommodating groove that can be locked in the front-rear direction with the caulking member by accommodating the caulking member,
The locking portion is formed to be recessed in a direction intersecting the axial direction of the wire receiving hole,
At the tip of the lock piece, a lock claw that protrudes in a direction away from the electric wire and can be locked to the locking portion from the front is formed.
The connector according to claim 1, wherein a front stop portion is formed on an inner surface of the wire receiving hole so that the fixing portion contacts from the rear . The fixing part connector according to claim 1 Symbol mounting, characterized in that it is formed by a plurality of divided bodies. The connector according to claim 2 , wherein the plurality of divided bodies have the same shape. The connector according to any one of claims 1 to 3 , wherein the locking portion is formed at a front end opening edge portion of the electric wire receiving hole and faces forward.

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