JP2018085229A - connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure tenacity of a terminal.SOLUTION: The connector is a shield connector 10 including a covered conductor 20 where the core wire 21 is covered with an insulation coating 22, a ring terminal 30 having a wire connection 32 for connection with the core wire 21 exposed from the insulation coating 22 at the front end (terminal) of the covered conductor 20, and a housing 40 for housing the covered conductor 20 while inserting in the cross direction. The housing 40 has a locking cylinder part 45 arranged between a bellmouth 35 provided on the rear side of the wire connection 32 and the front end of the insulation coating 22, and having a locking protrusion 48 that can be locked to the bellmouth 35 provided on the rear side of the wire connection and the front end of the insulation coating 22 in the cross direction.SELECTED DRAWING: Figure 2

Description

  The technology disclosed by this specification is related with a connector.

For example, what is described in Unexamined-Japanese-Patent No. 2014-26746 (the following patent document 1) is known as an electric wire holding | maintenance apparatus holding the some electric wire to which the terminal was connected.
This electric wire holding device has a pair of holding members that are assembled so as to face each other in the vertical direction, and a plurality of electric wires are held by the pair of holding members by sandwiching each electric wire from both sides in the vertical direction by the pair of holding members. It is like that.

JP 2014-26746 A

  By the way, in general, the larger the wire diameter, the smaller the variation in the wire diameter. For this reason, when the electric wire holding device as described above is applied to a thick electric wire having a large electric wire diameter, when the electric wire diameter is slightly narrowed, the electric wire holding force is reduced and the electric wire is pulled. In such a case, the electric wire may be detached from the holding member. Moreover, also when an electric wire diameter becomes thin by age-related deterioration of an electric wire, the holding force holding an electric wire will fall.

  In the present specification, a technique for ensuring the holding force of the terminal is disclosed.

  The technology disclosed in this specification includes an electric wire having a core wire covered with an insulating coating, a terminal having a wire connecting portion connected to the core wire exposed from the insulating coating at an end of the electric wire, and the electric wire as the electric wire. A housing that is housed in a state of being inserted in a front-rear direction that is an extending direction of the wire, wherein the housing includes a rear end portion on the insulating coating side in the wire connecting portion and a terminal side in the insulating coating. Between the front end portion of the wire connecting portion and the rear end portion of the wire connecting portion and the front end portion of the insulating coating have a locking portion that can be locked in the front-rear direction.

  According to the connector having such a configuration, the front end portion of the insulating coating and the locking portion are locked in the front-rear direction, whereby the electric wire is stopped in front of the housing. On the other hand, when the electric wire is pulled backward, the rear end portion and the engaging portion in the electric wire connecting portion of the terminal are engaged in the front-rear direction, so that the holding force of the terminal with respect to the housing is secured, and the electric wire is accommodated in the housing. Can be prevented from leaving.

  That is, the rear end portion of the wire connecting portion and the front end portion of the insulating coating and the locking portion are locked in the front-rear direction, so that the holding force of the terminal with respect to the housing can be secured and stably held. As a result, for example, even when the wire diameter varies, or when the wire deteriorates with age and the wire diameter becomes thin, the wire is prevented from being displaced relative to the housing, or the wire is not detached from the housing. be able to.

The connector disclosed by this specification is good also as the following structures.
The locking portion is provided to extend forward along the electric wire, and elastically displaces away from the electric wire when the electric wire is inserted into the housing, so that the electric wire is properly accommodated. When placed in a position, the elastic piece is elastically restored, and protrudes from the elastic piece toward the core wire, and is retracted from the insertion path of the electric wire by pressing the insulating coating of the electric wire, so that the electric wire is properly When it is disposed at the housing position, the pressing by the insulating coating is released, and a locking projection that enters between the rear end portion of the wire connecting portion and the front end portion of the insulating coating is provided. Also good.

  According to such a configuration, when the electric wire is assembled to the housing, the elastic piece of the locking portion is elastically displaced, and when the electric wire is arranged at the proper accommodation position, the pressure applied by the insulating coating is released and the elastic piece is released. Because the elastic protrusion returns, the locking projection enters between the rear end portion of the electric wire connecting portion and the front end portion of the insulating coating.For example, after arranging the electric wire in the normal assembly position with respect to the housing, Compared to the case where a locking portion is disposed between the rear end portion of the wire connecting portion and the front end portion of the insulating coating, the locking structure of the rear end portion of the wire connecting portion and the front end portion of the insulating coating and the locking portion. Can be configured easily.

  The electric wire connecting portion is formed larger in the radial direction of the electric wire than the insulating coating, and the rear end portion of the electric wire connecting portion and the front end portion of the elastic piece can be locked in the front-rear direction. It is good also as composition which has.

  According to such a configuration, when the electric wire is pulled rearward, the front end portion of the elastic piece is locked in the front-rear direction with the rear end portion of the electric wire connecting portion in addition to the locking protrusion, so that the terminal is held to the housing. The force can be further increased, and the terminal can be stably held with respect to the housing.

  The locking protrusion may be provided so as to be inclined in a direction away from the electric wire from the front to the rear, and may have a guide surface that guides the electric wire when the electric wire is inserted into the housing. .

  According to such a configuration, when the electric wire is inserted into the housing, the electric wire is guided by the guide surface. For example, the front end portion of the insulating coating is damaged by catching the locking projection and the insulating coating of the electric wire. Can be prevented. As a result, it can suppress that the latching force of a latching protrusion and insulating coating falls.

A plurality of the locking portions may be provided.
According to such a configuration, since a plurality of wires are provided on the outer periphery of the electric wire so as to surround the electric wire, for example, the holding force of the terminal with respect to the housing can be increased as compared with a case where only one locking portion is provided. The terminal can be stably held with respect to the housing.

The plurality of locking portions may be arranged on the outer periphery of the electric wire so as to surround the electric wire.
According to such a configuration, since the engaging portion is arranged on the outer periphery of the electric wire so as to surround the electric wire, the rear portion of the electric wire connecting portion is compared with the case where the engaging portion is provided biased to the electric wire. The end portion and the front end portion of the insulating coating can be locked in a balanced manner in the circumferential direction of the electric wire. Thereby, the holding force of the terminal with respect to the housing can be further increased, and the terminal can be stably held with respect to the housing.

  According to the technology disclosed in this specification, it is possible to ensure the holding force of the terminals.

Perspective view of shield connector Cross section of shield connector Longitudinal section of shield connector 2 is an enlarged cross-sectional view of the main part of FIG. Partial exploded perspective view of shield connector Top view of housing Front view of housing AA line sectional view of FIG. Longitudinal sectional view showing a state where a covered electric wire is inserted into the housing A longitudinal sectional view showing a state where a round terminal is connected to a covered electric wire inserted through a housing

<Embodiment>
An embodiment of the technology disclosed in this specification will be described with reference to FIGS. 1 to 10.

  This embodiment has illustrated the shield connector 10 assembled | attached to the case which is not shown in figure of an apparatus.

  As shown in FIGS. 1 to 3, the shield connector 10 is assembled to the covered electric wire 20, a round terminal 30 connected to the end of the covered electric wire 20, a housing 40 that houses the covered electric wire 20, and the housing 40. The shield shell 60 is provided. In FIG. 1, the shield shell 80 is not shown.

  The covered electric wire 20 is formed by twisting together a plurality of metal wires excellent in conductivity to form a core wire 21 and covering the periphery of the core wire 21 with a synthetic resin insulating coating 22. The front end portion of the covered electric wire 20 (the end portion of the covered electric wire 20) is in a state where the core wire 21 is exposed by peeling off the insulating coating 22, and the front end portion of the insulating coating 22 is shown in FIGS. As shown in FIG. 3, the outer periphery protrudes radially outward from the core wire 21.

  The round terminal 30 is configured by pressing a metal plate having excellent conductivity and is connected to a flat terminal connection portion 31 and a covered electric wire 20 as shown in FIGS. 1 to 3. The electric wire connection part 32 and the connection part 33 which connects the terminal connection part 31 and the electric wire connection part 32 are comprised.

  The terminal connection portion 31 is provided with a bolt hole 31 </ b> A through which a bolt (not shown) can be inserted so as to penetrate in the vertical direction, which is the thickness direction of the terminal connection portion 31. The terminal connecting portion 31 is superposed on a case-side terminal (not shown) provided in the case, and is bolted with a bolt inserted into the bolt hole 31A, thereby being bolted to the case-side terminal. Yes.

The wire connection portion 32 is a so-called open barrel type in which a pair of barrel pieces 34 are provided on the side edges on both sides in the width direction of the bottom plate 32A on which the core wire 21 of the covered wire 20 is placed. The electric wire connecting portion 32 peels off the insulating coating 22 at the end of the covered electric wire 20 and places the exposed core wire 21 on the bottom plate 32A, and abuts the tip ends of the pair of barrel pieces 34 with the pair of barrel pieces 34. The pair of barrel pieces 34 are crimped to the core wire 21 so as to wrap the core wire 21 from both sides in the width direction, so that the core wire 21 is electrically connected to the core wire 21.
As shown in FIGS. 2 to 4, the wire connecting portion 32 crimped to the core wire 21 is widened radially outward (in the direction away from the covered wire 20) as the front and rear end portions of the wire connecting portion 32 approach the edge. The bell mouth 35 is formed so that the width dimension D1 in the width direction is larger than the height dimension D2 in the vertical direction and the outer diameter D3 of the covered electric wire 20.

  Further, as shown in FIGS. 2 to 4 and 10, the electric wire connecting portion 32 is connected to a position slightly away from the insulating coating 22 of the covered electric wire 20, and the electric wire connecting portion 32 is connected to the rear end side of the electric wire connecting portion 32. A gap S is formed around the entire circumference between the bell mouth 35 and the front end surface 22A of the insulating coating 22.

  The connecting portion 33 extends slightly forward from the bottom plate 32 </ b> A of the wire connecting portion 32 and then extends obliquely forward and downward. The terminal connecting portion 31 is connected to the front edge of the connecting portion 33. ing.

  The housing 40 is made of synthetic resin and has a cylindrical shape that penetrates in the front-rear direction, as shown in FIGS. 2, 3, and 7 to 10, and is fitted in a mounting hole (not shown) provided in the case. It has a substantially cylindrical housing body 41 that can be mated.

  As shown in FIGS. 2 and 3, a seal mounting groove 42 in which an annular rubber ring R is mounted is formed in the front outer peripheral surface of the housing body 41. When the housing main body 41 is fitted into the mounting hole of the case, the rubber ring R seals between the inner peripheral surface of the mounting hole and the inner peripheral surface 42A on the back side of the seal mounting groove 42.

  In the housing main body 41, the covered electric wire 20 is accommodated in a state of being inserted from the rear so as to penetrate in the front-rear direction. When the covered electric wire 20 is disposed at the proper accommodation position in the housing main body 41, the insulating coating 22 of the covered electric wire 20 is pulled out from the housing main body 41 forward as shown in FIGS. 2 and 3.

The interior of the housing body 41 is a rubber plug housing portion 44 whose rear side is wider than the front side of the housing body 41 in the front-rear direction substantially central portion. In the rubber plug housing portion 44, an annular rubber plug 70 that is externally fitted to the covered electric wire 20 is housed from behind.
As shown in FIG. 5, the rubber plug 70 includes a plurality of outer peripheral lips 70 </ b> A formed on the outer peripheral surface of the rubber plug 70 and a plurality of inner peripheral lips 70 </ b> B formed on the inner peripheral surface of the rubber plug 70. Have. As shown in FIGS. 2 and 3, when the rubber plug 70 is housed in a regular rubber plug housing position, which is the front end portion in the rubber plug housing section 44, the outer peripheral lip 70A of the rubber plug 70 is the rubber plug housing section. 44, the inner peripheral lip 70B is in close contact with the outer peripheral surface of the insulating coating 22 of the covered electric wire 20 over the entire periphery, so that the housing main body 41 and the covered electric wire 20 are in close contact with each other. It is designed to seal the gap.

  In addition, a back retainer 72 that prevents the rubber plug 70 from coming off backward is attached to the rear end portion of the rubber plug housing portion 44. As shown in FIGS. 2, 3, and 5, the back retainer 72 includes a substantially cylindrical retainer main body 73, and a rubber stopper retaining portion 74 provided in a flange shape on the outer peripheral edge of the front end of the retainer main body 73. It is configured with.

  The retainer main body 73 has a shape that is long in the front-rear direction, and a pair of ribs 73 </ b> A protruding outward are provided at both ends of the retainer main body 73 in the vertical direction over the entire length of the retainer main body 73. Is formed. Further, the covered electric wire 20 can be inserted into the retainer main body 73, and the covered electric wire 20 is drawn straight out from the housing 40 rearward by inserting the covered electric wire 20 into the retainer main body 73. It is like that.

  The rubber plug retaining part 74 can be accommodated in the rear end part of the rubber stopper accommodating part 44. As shown in FIGS. 2 and 3, the rubber stopper retaining part 74 is a regular retaining part in the rubber stopper accommodating part 44. When housed in the housing position, the front end surface of the rubber plug stopper 74 comes into contact with the rear end surface of the rubber plug 70, and the rear end surface of the housing body 41 and the rear end surface of the rubber plug stopper 74 are flush with each other. Is formed.

  Further, as shown in FIG. 3, the both ends in the vertical direction of the outer peripheral surface of the rubber plug retaining portion 74 can be fitted into locking holes 41A provided through the inside and outside of the vertical ends of the housing body 41. A locking projection 75 is provided. When the rubber plug retaining part 74 is accommodated in the regular retaining position in the rubber stopper accommodating part 44, the locking projection 75 is fitted into the locking hole 41A, thereby causing the rubber stopper retaining part 74 to be authorized. The rubber stopper 70 is held in the retaining position to prevent the rubber stopper 70 from falling off the housing 40.

  The shield shell 60 is made of a conductive metal. As shown in FIGS. 2 and 3, the shield shell 60 is formed in a substantially cylindrical shape covering the entire circumference of the covered electric wire 20 drawn backward from the back retainer 72, and the outer peripheral surface of the shield shell 60. A braided wire (not shown) that covers the covered electric wire 20 drawn rearward from the shield shell 60 is electrically connected. The shield shell 60 is electrically connected to the outer surface of the case by being bolted to a case (not shown).

  The housing 40 has a substantially cylindrical locking cylinder portion (an example of a “locking portion”) 45 provided at the front end portion of the housing body 41 as shown in FIGS. The locking cylinder portion 45 is formed to have a smaller diameter than the housing main body 41, and extends along the covered electric wire 20 from the front wall 44 </ b> A of the rubber plug housing portion 44 in the housing main body 41 to a position where the core wire 21 of the covered electric wire 20 is exposed. It is set as the form extended straight ahead toward the front.

  As shown in FIG. 4, the inner diameter dimension D <b> 7 of the locking cylinder portion 45 is a dimension that matches the outer diameter dimension D <b> 3 of the covered electric wire 20, and the inside of the housing body 41 is inserted into the locking cylinder portion 45. The covered electric wire 20 is inserted in a fitted state with almost no gap.

  As shown in FIGS. 1 and 5 to 8, the locking cylinder portion 45 has a plurality of slits 46 extending in the front-rear direction from the front end of the locking cylinder portion 45 to the same position as the front end position of the housing body 41. Is provided.

  As shown in FIG. 7, each slit 46 is provided so as to penetrate the locking cylinder portion 45 inward and outward, and a total of four locations including two locations on the locking cylinder portion 45 obliquely above and two on the diagonally lower side. Is formed. Therefore, the latching cylinder portion 45 is divided by the slits 46 so that the front end portion is a free end and elastically displaced outward in the radial direction with a base end portion between the rear end positions of the adjacent slits 46. It is configured by a total of four elastic pieces 47 that can be vertically and horizontally.

  Further, as shown in FIGS. 2 to 4, a locking projection 48 that protrudes radially inward is provided at the front end of each elastic piece 47. The length dimension D4 in the front-rear direction of the locking projection 48 is the length in the front-rear direction of the gap S between the bell mouth 35 on the rear end side of the wire connection portion 32 and the front end surface 22A of the insulating coating 22 of the covered wire 20. The dimension D5 is set to be compatible with the dimension D5, and the protrusion dimension D6 of the locking protrusion 48 is set to be substantially the same as the dimension D8 in which the insulating coating 22 protrudes from the core wire 21 in the covered electric wire 20. Then, when the covered electric wire 20 is arranged at the proper housing position of the housing main body 41, it fits into the gap S between the bell mouth 35 on the rear end side of the electric wire connecting portion 32 and the front end surface 22 </ b> A of the insulating coating 22. The front end face 22A of the insulating coating 22 in the covered electric wire 20 is arranged in the vicinity of the rear of the locking projection 48, and the bell mouth on the rear end side of the electric wire connecting portion 32 is in front of the locking projection 48 and the elastic piece 47. 35 are arranged close to each other. In addition, a guide surface 48A is provided at the protruding end of each locking projection 48. The guide surface 48A is inclined toward the outer side in the radial direction (the direction away from the covered electric wire 20) from the substantially central portion in the front-rear direction of the protruding end toward the rear. .

  In other words, each elastic piece 47 has a form extending toward the front with the front end portion as a free end and the rear end position between adjacent slits 46 as a base end portion. It is equally arranged on the outer periphery of the covered wire 20 so as to surround the wire 20.

  And in the insertion process which inserts the covered electric wire 20 in the latching cylinder part 45 from back, the insulating coating 22 of the covered electric wire 20 contacts the guide surface 48A of the latching protrusion 48, so that the insulating coating 22 is guided by the guide surface 48A. Smoothly guided forward. Then, as shown in FIGS. 9 and 10, the locking protrusions 48 are pressed radially outward by the insulating coating 22 and run up and retract from the insertion path of the covered electric wire 20, so that each elastic piece 47 is radially outward. Elastically displaced toward

  On the other hand, when the covered electric wire 20 to which the round terminal 30 is connected is disposed at the proper receiving position, the pressing of the locking protrusion 48 by the insulating coating 22 is released as shown in FIGS. When the protrusion 48 enters the gap S between the bell mouth 35 on the rear end side of the wire connecting portion 32 and the front end face 22A of the insulating coating 22, the elastic piece 47 is elastically restored. Then, when the locking projection 48 fits in the gap S, the locking projection 48 and the bell mouth 35 on the rear end side of the wire connection portion 32 and the front end surface 22A of the insulating coating 22 are engaged in the front-rear direction. The locking projections 48 are arranged in the front-rear direction close to the bell mouth 35 on the rear end side of the electric wire connection portion 32 and the front end surface 22A of the insulating coating 22 so as to be able to be stopped, and are elastic on both sides in the width direction. The piece 47 is arranged close to the rear of the bell mouth 35 on the rear end side of the electric wire connecting portion 32.

  The present embodiment is configured as described above. Next, the assembly procedure of the shield connector 10 will be briefly described, and the operation and effect will be described.

  In assembling the shield connector 10, first, the rubber plug 70 and the back retainer 72 are passed through the covered electric wire 20 before the insulation coating 22 is peeled off, and the covered electric wire 20 is moved from the rear to the housing main body 41 of the housing 40. The covered electric wire 20 is inserted into the housing 40 in the front-rear direction.

  In the insertion process of the covered electric wire 20, when the covered electric wire 20 enters the locking cylinder portion 45 and the covered electric wire 20 is inserted up to the position of the locking protrusion 48, the insulating coating 22 of the covered electric wire 20 is moved to each elastic piece. 47 abuts on the guide surface 48A of the locking projection 48. When the covered electric wire 20 is further inserted as it is, the insulating coating 22 is smoothly guided by the guide surface 48A, so that the respective locking projections 48 are pushed by the insulating coating 22 and evacuate from the insertion path of the covered electric wire 20. Thus, each elastic piece 47 is elastically displaced toward the radially outer side. Accordingly, the covered electric wire 20 is inserted so as to penetrate the housing 40 in the front-rear direction.

  Next, as shown in FIG. 9, the insulation coating 22 at the front end, which is the terminal portion of the covered electric wire 20, is peeled off. Then, the exposed core wire 21 is placed on the bottom plate 32A in the electric wire connection portion 32 of the round terminal 30, and the pair of barrel pieces 34 are wrapped around the core wire 21 as shown in FIG. The substantially middle part in the front-rear direction is crimped to the core wire 21 from both sides in the up-down direction. Thereby, the round terminal 30 is electrically connected to the front end portion of the covered electric wire 20, and the bell mouth 35 is formed at both ends in the front-rear direction of the wire connecting portion 32.

  Further, the wire connection portion 32 is connected to a position slightly away from the insulation coating 22 of the covered wire 20, and between the bell mouth 35 on the rear end side of the wire connection portion 32 and the front end surface 22 </ b> A of the insulation coating 22. The gap S is formed over the entire circumference.

  Next, by pulling back the covered electric wire 20 with respect to the housing 40 to the proper accommodation position, the locking protrusion 48 is insulated from the bell mouth 35 on the rear end side of the electric wire connecting portion 32 as shown in FIGS. The elastic piece 47 is elastically restored by entering the gap S between the front end surface 22A of the covering 22 and the elastic piece 47. Then, the engaging protrusion 48 fits in the gap S so that the engaging protrusion 48 comes close to the bell mouth 35 on the rear end side of the wire connecting portion 32 and the front end face 22A of the insulating coating 22 in the front-rear direction. In addition, the elastic pieces 47 on both sides in the width direction are arranged close to the rear of the bell mouth 35 on the rear end side of the wire connecting portion 32, and the shield connector 10 is completed.

  As shown in FIGS. 2 to 4, the shield connector 10 assembled as described above has the locking protrusions 48 arranged evenly on the outer periphery of the core wire 21 of the covered electric wire 20 and the rear end of the electric wire connecting portion 32. Since the bell mouth 35 on the side and the front end surface 22A of the insulating coating 22 are arranged close to each other in the front-rear direction, the front end surface 22A of the insulating coating 22 of the covered electric wire 20 and the locking projections 48 of the elastic pieces 47 are formed. By stopping in the front-rear direction at four locations in the circumferential direction, the front end of the covered electric wire 20 with respect to the housing 40 is stopped.

  On the other hand, when the covered wire 20 is pulled rearward, the rear bell mouth 35 and the locking protrusions 48 in the wire connection portion 32 of the round terminal 30 are locked in the front-rear direction at four locations in the circumferential direction. By doing so, the holding force of the round terminal 30 with respect to the housing 40 is ensured, and the covered electric wire 20 can be prevented from being detached from the housing 40.

In other words, as in the conventional case, for example, when the thick wire having a large wire diameter is applied, the wire diameter varies as compared with the case where the covered wire is held by sandwiching the covered wire from both sides in the vertical direction by a pair of holding members. Even when the outer diameter of the covered electric wire 20 is slightly reduced due to deterioration of the covered electric wire 20 over time, the covered electric wire 20 may be displaced in the front-rear direction with respect to the housing 40, or The electric wire 20 can be prevented from being detached from the housing 40, and the covered electric wire 20 can be stably held by the housing 40.
Further, for example, the holding force of the round terminal 30 with respect to the housing 40 is balanced in comparison with the case where only one elastic piece is provided or the case where a plurality of elastic pieces are provided to be biased with respect to the covered electric wire. The round terminal 30 can be stably held by the housing 40.

  Further, according to the present embodiment, the elastic pieces 47 on both sides in the width direction of the locking cylinder portion 45 are respectively arranged behind the bell mouth 35 on the rear side of the wire connection portion 32 of the round terminal 30. That is, when the covered electric wire 20 is pulled rearward, in addition to the engagement between the rear bell mouth 35 and the engaging protrusion 48 of each elastic piece 47, both ends in the width direction of the bell mouth 35 and both sides in the width direction. Since the two elastic pieces 47 are locked in the front-rear direction, the covered electric wire 20 can be more stably held by the housing 40.

  Further, according to the present embodiment, when the covered electric wire 20 is inserted into the locking cylinder portion 45 of the housing 40, the locking protrusion 48 is pressed by the insulating coating 22 and the elastic piece 47 is elastically displaced. Then, when the covered electric wire 20 is pulled back and disposed at the proper accommodation position, the pressing of the insulating coating 22 is released and the elastic piece 47 is elastically restored, so that the locking protrusion 48 is located on the rear side of the electric wire connecting portion 32. The bell mouth 35 and the front end face 22 </ b> A of the insulating coating 22 are disposed in the gap S. Thereby, for example, the round terminal 30 is compared with the case where the latching protrusion is arranged in the gap between the bell mouth on the rear side and the insulating coating after the covered electric wire is arranged in the regular housing position with respect to the housing. And the latching structure of the covered electric wire 20 and the housing 40 can be comprised easily.

  Furthermore, according to the present embodiment, the locking protrusion 48 of the elastic piece 47 is provided with a guide surface 48A that is inclined radially outward as it goes rearward, and the insulating coating 22 of the covered electric wire 20 is provided by this guide surface 48A. Therefore, it is possible to suppress the front end face 22A of the insulating coating 22 from being damaged by being caught between the locking projection 48 and the insulating coating 22 of the covered electric wire 20. As a result, it can suppress that the latching force of 22 A of front-end surfaces of the insulation coating 22 and the latching protrusion 48 falls.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and includes, for example, the following various aspects.

  (1) In the said embodiment, it was set as the structure by which only one latching cylinder part 45 was provided in the housing 40. As shown in FIG. However, the present invention is not limited to this, and a plurality of locking cylindrical portions may be provided in the housing, so that a plurality of round terminals and covered electric wires may be held in the housing.

  (2) In the said embodiment, it was set as the structure which crimped | bonded the pair of barrel pieces 34 in the electric wire connection part 32 of the round terminal 30 to the core wire 21 of the covered electric wire 20. FIG. However, the present invention is not limited thereto, and a pair of barrel pieces of male and female terminals or a closed barrel may be crimped to the core wire of the covered electric wire.

  (3) In the above embodiment, the locking cylinder portion 45 is configured by the four elastic pieces 47 on the top, bottom, left, and right. However, the present invention is not limited to this, and the locking cylinder portion may be configured by three or less elastic pieces or five or more elastic pieces.

10: Shield connector (an example of “connector”)
20: Covered wire (an example of “wire”)
21: Core wire 22: Insulation coating 40: Housing 45: Locking cylinder part (an example of "locking part")
47: Elastic piece 48: Locking protrusion 48A: Guide surface

Claims (6)

An electric wire with a core wire covered with an insulation coating;
A terminal having an electric wire connecting portion connected to the core wire exposed from the insulating coating at the end of the electric wire;
A connector including a housing that accommodates the electric wire in a state in which the electric wire is inserted in a front-rear direction that is an extending direction of the electric wire,
The housing is arranged between a rear end portion on the insulating coating side in the electric wire connection portion and a front end portion on the terminal side in the insulating coating, and the rear end portion of the electric wire connection portion and the front end portion of the insulating coating. And a connector having a locking portion that can be locked in the front-rear direction. The locking portion is provided to extend forward along the electric wire, and elastically displaces away from the electric wire when the electric wire is inserted into the housing, so that the electric wire is properly accommodated. An elastic piece that returns elastically when placed in a position;
Protruding from the elastic piece toward the core wire, retreating from the insertion path of the electric wire by pressing the insulating coating of the electric wire, and pressing the insulating coating when the electric wire is disposed at a normal accommodation position The connector according to claim 1, wherein the connector has a locking projection that enters between the rear end portion of the electric wire connection portion and the front end portion of the insulating coating. The wire connecting portion is formed larger in the radial direction of the wire than the insulating coating,
The connector according to claim 2, wherein a rear end portion of the electric wire connection portion and a front end portion of the elastic piece can be locked in the front-rear direction.   The locking protrusion is provided to be inclined in a direction away from the electric wire from the front to the rear, and has a guide surface for guiding the electric wire when the electric wire is inserted into the housing. The connector according to claim 3.   The connector according to any one of claims 1 to 4, wherein a plurality of the locking portions are provided.   The connector according to claim 5, wherein the plurality of locking portions are arranged on an outer periphery of the electric wire so as to surround the electric wire.

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