JP2021190224A - Wire protection structure of connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire protection structure of a connector capable of satisfactorily protecting an electric wire by a connector cover and a corrugated tube having good assembling property.
SOLUTION: An end of a corrugated tube 80 is provided by a bellows-cylindrical corrugated tube 80 through which an electric wire drawn from a connector is inserted, and a plurality of locking ridges which are assembled to the connector and into which an annular groove 82 of the corrugated tube 80 is inserted. A connector cover for holding the portion from the outer peripheral side is provided. The corrugated tube 80 has a slit 85 formed by being curved in a wavy shape along the longitudinal direction, and the slit 85 is formed in a predetermined radial straight line X orthogonal to the center line O of the corrugated tube 80 over the longitudinal direction. It has a cut surface 91 made of vertical surfaces orthogonal to each other.
[Selection diagram] FIG. 5

Description

The present invention relates to a wire protection structure for a connector.

There is a wire cover that is attached to the lead-out end of the wire in the connector and covers and protects the wire drawn from the connector. The electric wire cover includes a cover main body (connector cover) that covers the electric wire drawn from the connector housing, and a corrugated tube mounting portion provided at the electric wire outlet of the cover main body, and the corrugated tube through which the electric wire is passed is provided. Attach it to the corrugated tube mounting part. The corrugated tube is disengaged from the corrugated tube mounting portion by fitting the holding rib (locking ridge) provided in the corrugated tube mounting portion into the annular holding groove (annular groove) of the bellows cylindrical corrugated tube. Is prevented.

By the way, in the corrugated tube attached to the electric wire cover, a linear slit along the center line direction is formed at one place in the circumferential direction in order to make it easy to insert the electric wire inside.
Therefore, when the corrugated tube is pulled with respect to the electric wire cover mounted on the corrugated tube mounting portion, a force for reducing the diameter of the corrugated tube is applied by the tensile force. Then, the edges of the slits that are butted against each other are displaced and overlap each other, and the corrugated tube may come off from the corrugated tube mounting portion. Then, the electric wire may be exposed between the electric wire cover and the corrugated tube, and the electric wire may not be protected.

Therefore, in Patent Document 1, a protrusion protruding radially inward from the inner peripheral surface of the outlet of the corrugated tube mounting portion is provided on the cover body, and a recess into which the protrusion fits is provided along a slit formed in the corrugated tube. The provided wire cover is described.

Japanese Unexamined Patent Publication No. 2013-254580

However, the electric wire cover needs to be set so that the protrusion of the corrugated tube mounting portion is aligned with the recess provided along the slit of the corrugated tube, and the assembling property is not good.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wire protection structure of a connector capable of satisfactorily protecting an electric wire by a connector cover having good assembling property and a corrugated tube. There is something in it.

The above object of the present invention is achieved by the following configuration.
(1) The end of the corrugated tube is formed by a bellows-cylindrical corrugated tube into which an electric wire drawn from the connector is inserted and a plurality of locking ridges that are assembled to the connector and enter the annular groove of the corrugated tube. The corrugated tube comprises a connector cover that is held from the outer peripheral side, and the corrugated tube has a slit formed by being curved in a wavy shape along the longitudinal direction, and the slit is formed along the longitudinal direction at the center line of the corrugated tube. A wire protection structure for a connector, characterized in that it has a cut surface consisting of vertical planes orthogonal to a predetermined radial straight line that is orthogonal to each other.

According to the electric wire protection structure of the connector having the configuration of (1) above, the corrugated tube has slits formed by being curved in a wavy shape so that the directions are alternately changed at a plurality of curved portions along the longitudinal direction. There is. Therefore, the electric wire can be easily accommodated inside the corrugated tube through this slit. Further, the slit is curved in a wavy shape along the longitudinal direction, and the cut surface of the slit is a vertical surface orthogonal to a predetermined radial straight line orthogonal to the center line of the corrugated tube. As a result, when a tensile force in the pulling direction acts on the corrugated tube, the riding direction of the edge portion in the slit of the corrugated tube changes depending on the location. Furthermore, by holding the plurality of locking ridges of the connector cover in the annular groove of the corrugated tube, it is possible to suppress the displacement of the slits facing each other in the longitudinal direction and to improve the adhesion between the cut surfaces. Can be done. Therefore, since the cut surfaces of the slits of the corrugated tube held by the connector cover are in close contact with each other, it is possible to prevent the edges of the slits from overlapping each other and the outer diameter from being reduced at once.
Further, it is not necessary to set the corrugated tube on the connector cover by paying attention to the direction of the slit, and the assembling workability is not deteriorated.
As a result, it is possible to maintain a good protection state of the electric wire by the connector cover and the corrugated tube having good assembling property.

(2) The electric wire protection structure of the connector according to (1) above, wherein the slit is curved in a sine curve wave shape and is continuous in the longitudinal direction of the corrugated tube.

According to the wire protection structure of the connector having the configuration of (2) above, the cut surfaces of the slits of the corrugated tube are brought into close contact with each other smoothly and surely, and the overlap of the edges of the slits is more reliably suppressed. be able to.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a wire protection structure of a connector capable of satisfactorily protecting an electric wire by a connector cover and a corrugated tube having good assembling property.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

It is a perspective view of the connector to which the connector cover and the corrugated tube are attached. FIG. 3 is an exploded perspective view of the connector, the connector cover, and the corrugated tube shown in FIG. 1. It is a figure which shows the connector with the connector cover in the process of assembling, (a) is the perspective view from the rear side, (b) is the perspective view from the front side. It is a top view of the corrugated tube shown in FIG. It is a figure which shows the cross-sectional shape of the corrugated tube, (a) is the cross-sectional view of AA in FIG. 4, and (b) is the cross-sectional view of BB in FIG. It is a figure explaining the method of forming a slit in a corrugated tube, (a) is a perspective view before formation, (b) is a perspective view during formation. It is sectional drawing along the radial direction in the process of forming a slit which explains the method of forming a slit in a corrugated tube. It is a top view of a part of a connector cover and a corrugated tube explaining a reference example. It is a figure which shows the corrugated tube of the reference example shown in FIG. 8, (a) is a plan view, (b) is a front view. It is a figure which shows the corrugated tube used in the reference example shown in FIG. 8, (a) is the sectional view along the radial direction, (b) is the sectional view along the radial direction which shows the state at the time of being pulled.

Hereinafter, examples of embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a connector 40 to which a connector cover 10 and a corrugated tube 80 are mounted. FIG. 2 is an exploded perspective view of the connector 40, the connector cover 10, and the corrugated tube 80 shown in FIG.

As shown in FIGS. 1 and 2, in the connector 40 to which the wire protection structure of the connector according to the present embodiment is applied, the connector cover 10 is assembled on the pull-out side of the rear end from which the wire 41 is pulled out. The electric wire 41 is protected by being passed through a corrugated tube 80 which is a protective member formed in a cylindrical shape. The corrugated tube 80 is made of a resin tube, and has a bellows-cylindrical shape in which a plurality of annular grooves 82 formed in the circumferential direction on the outer peripheral surface 81 are formed at equal intervals in the longitudinal direction. The end of the corrugated tube 80 is locked and held by the connector cover 10. As a result, the connector 40 and the corrugated tube 80 are connected by the connector cover 10, and the electric wire 41 drawn from the connector 40 is covered and protected by the connector cover 10 and the corrugated tube 80.

The connector 40 to which the connector cover 10 is assembled includes a housing 43, two female terminals 44 housed in the housing 43, an annular sealing member 46 mounted on the housing 43, and a retainer 47 mounted on the housing 43. Is configured with. The connector 40 is fitted to the mating side connector (not shown) so that the female terminal 44 is electrically connected to the male terminal (not shown) of the mating side connector.

The housing 43 is formed with two terminal accommodating chambers 51 into which female terminals 44 are inserted from the rear. Each terminal accommodating chamber 51 is opened at the tip of the housing 43, and a tab-shaped male terminal is inserted from the opened tip.

The female terminal 44, which is inserted into and accommodated in the terminal accommodating chamber 51, is crimped and connected to the end of the electric wire 41. A rubber stopper 53 is attached to the electric wire 41 to which the female terminal 44 is connected. The rubber stopper 53 is fitted into the terminal accommodating chamber 51 to hermetically seal the terminal accommodating chamber 51.

The housing 43 has an inner housing 54 projecting forward, and a seal member 46 is mounted on the outer peripheral surface at the base of the inner housing 54. The retainer 47 is mounted on the inner housing 54 from the side thereof. The retainer 47 is made of synthetic resin and has a U-shaped cross section with one side open. The retainer 47 has a front plate portion 61 that covers the front end. An insertion port 62 is formed in the front plate portion 61. By mounting the retainer 47 from the side of the inner housing 54, the front end thereof is covered by the front plate portion 61 of the retainer 47, and the terminal accommodating chamber 51 and the insertion port 62 of the retainer 47 are communicated with each other. A tab-shaped male terminal of the mating connector is inserted into the insertion port 62, and is electrically connected to the female terminal 44 housed in the terminal storage chamber 51.

A lock arm 66 having a locking claw 65 at the tip thereof is formed on the upper portion of the housing 43. The lock arm 66 is supported in the shape of a cantilever. In the lock arm 66, when the housing 43 is fitted to the mating housing of the mating connector, the locking claw 65 locks the locking projection (not shown) formed on the mating housing. As a result, the housing 43 is locked in a state of being fitted to the mating housing. Further, on both sides of the rear end portion of the housing 43, locking grooves 67 extending in the vertical direction (in the direction of the height of the housing in FIG. 2) and having an open upper end are formed. Further, a locking rib 68 extending in the left-right direction (in the direction of the housing width in FIG. 2) is formed at the lower portion of the rear end portion of the housing 43.

3A and 3B are views showing a connector 40 provided with a connector cover 10 in the middle of assembly, where FIG. 3A is a perspective view from the rear side and FIG. 3B is a perspective view from the front side.

As shown in FIGS. 3A and 3B, the connector cover 10 assembled to the connector 40 has a first cover 11 and a second cover 12. The first cover 11 and the second cover 12 are rotatably connected to each other by a hinge portion 13. The first cover 11, the second cover 12, and the hinge portion 13 are integrally molded of synthetic resin. In the connector cover 10, the first cover 11 and the second cover 12 are brought into contact with each other by rotating the second cover 12 with respect to the first cover 11 from the state where the first cover 11 and the second cover 12 are open. Combined in a butted state.

The first cover 11 has locking portions 21 on both sides on one end side, which is an end portion on the side for assembling to the connector 40 (see FIG. 2). Each of the locking portions 21 has locking ribs 22, and these locking ribs 22 are inserted into the locking groove 67 formed in the housing 43 of the connector 40 from above (left side in FIG. 2). Then, the locking portion 21 is locked by the locking groove 67. As a result, the first cover 11 is assembled to the housing 43 of the connector 40.

The first cover 11 has a corrugated tube mounting portion 23 that is recessed in an arc shape in a cross-sectional view on the abutting side with the second cover 12. A plurality of locking ridges 24 are formed on the inner surface of the corrugated tube mounting portion 23. These locking ridges 24 are arranged at equal intervals from each other. The locking ridges 24 are arranged at the same arrangement pitch as the pitch of the plurality of annular grooves 82 of the corrugated tube 80. An end portion of the corrugated tube 80 is arranged on the corrugated tube mounting portion 23. Then, when the end portion of the corrugated tube 80 is arranged at a predetermined position of the corrugated tube mounting portion 23, the locking ridge 24 enters the annular groove 82 of the corrugated tube 80, whereby the locking ridge 24 causes the locking ridge 24 to enter. The end of the corrugated tube 80 is held by the corrugated tube mounting portion 23.

The first cover 11 is formed with a lock hole 50 on the connecting side with the second cover 12. The lock hole 50 is formed with a convex portion (not shown) on the outer inner surface thereof. Further, the first cover 11 is formed with a lock piece 52 on the side opposite to the connecting side with the second cover 12. The lock piece 52 is formed with a locking recess (not shown) inside the tip portion thereof.

The second cover 12 has a locking portion 31 on one end side, which is an end portion on the side for assembling to the connector 40. The locking portion 31 locks the locking rib 68 formed in the housing 43 of the connector 40. The locking portion 31 has a locking step portion 32, and by inserting the locking rib 68 inside the locking step portion 32, the locking portion 31 is locked by the locking rib 68. .. As a result, the second cover 12 is assembled to the housing 43 of the connector 40.

The second cover 12 has a corrugated tube mounting portion 33 that is recessed in an arc shape in a cross-sectional view on the abutting side with the first cover 11. A plurality of locking ridges 34 are formed on the inner surface of the corrugated tube mounting portion 33. These locking ridges 34 are arranged at equal intervals from each other. The locking ridges 34 are arranged at the same arrangement pitch as the pitch of the plurality of annular grooves 82 of the corrugated tube 80, similarly to the locking ridges 24 formed on the corrugated tube mounting portion 23 of the first cover 11. ing. An end portion of the corrugated tube 80 is arranged on the corrugated tube mounting portion 33. Then, when the end portion of the corrugated tube 80 is arranged at a predetermined position of the corrugated tube mounting portion 33, the locking ridge 34 enters the annular groove 82 of the corrugated tube 80, whereby the locking ridge 34 causes the locking ridge 34 to enter. The end of the corrugated tube 80 is held by the corrugated tube mounting portion 33.

A lock piece 55 is formed on the second cover 12 on the connecting side with the first cover 11. The lock piece 55 is formed with a claw portion (not shown) at the tip portion thereof. Further, the second cover 12 is formed with a recess 56 on the side opposite to the connecting side with the first cover 11. A locking convex portion 56a is formed in the concave portion 56.

FIG. 4 is a plan view of the corrugated tube 80 shown in FIG. 5A and 5B are views showing a cross-sectional shape of the corrugated tube 80, where FIG. 5A is a cross-sectional view taken along the line AA in FIG. 4, and FIG. 5B is a cross-sectional view taken along the line BB in FIG.

As shown in FIG. 4, as described above, the corrugated tube 80 is formed in a bellows-cylindrical shape in which a plurality of annular grooves 82 formed in the circumferential direction on the outer peripheral surface 81 are provided at equal intervals in the longitudinal direction. ..

The corrugated tube 80 has a slit 85. The slit 85 is formed along the longitudinal direction of the corrugated tube 80. The slit 85 is curved so as to alternately change its direction in the plurality of curved portions 87, and is formed in a wavy shape as a whole.

As shown in FIGS. 5A and 5B, the slit 85 has a cut surface 91 along the same direction at any position in the longitudinal direction. Specifically, the cut surface 91 of the slit 85 is a vertical surface orthogonal to a predetermined radial straight line X orthogonal to the center line O of the corrugated tube 80 at any position in the longitudinal direction.

Next, a case where the slit 85 is formed in the corrugated tube 80 will be described.
6A and 6B are views for explaining the method of forming the slit 85 in the corrugated tube 80, where FIG. 6A is a perspective view before formation and FIG. 6B is a perspective view during formation. FIG. 7 is a cross-sectional view taken along the radial direction during the formation of the slit 85 for explaining the method of forming the slit 85 in the corrugated tube 80.

As shown in FIGS. 6A and 6B, when forming the slit 85 in the corrugated tube 80, a cutting tool 101 is used. The cutting tool 101 has a guide rod 103 and a cutting blade 105 that is tilted and fixed to the guide rod 103. The guide rod 103 is formed to have a diameter smaller than the inner diameter of the corrugated tube 80.

As shown in FIG. 6A, the corrugated tube 80 is close to the cutting tool 101 from the end. Then, the guide rod 103 is inserted into the corrugated tube 80. Then, as shown in FIG. 6B, the corrugated tube 80 is pushed toward the cutting tool 101. Then, the corrugated tube 80 comes into contact with the cutting blade 105 and is cut along the longitudinal direction to form a slit 85. At this time, the corrugated tube 80 moves while being guided by the guide rod 103.

Here, as shown in FIG. 7, gaps G are formed on both sides of the inner peripheral surface of the corrugated tube 80 and the guide rod 103 due to the difference in diameter. When forming the slit 85 in the corrugated tube 80, the cutting tool 101 with respect to the corrugated tube 80 is formed by the gap G formed on both sides between the inner peripheral surface of the corrugated tube 80 and the guide rod 103. It is reciprocated at a relatively constant cycle along the radial straight line X. Then, the cutting blade 105 is moved to the left and right with a relative amplitude W while maintaining the posture with respect to the corrugated tube 80. As a result, in the corrugated tube 80, a slit 85 is formed in which the bending direction is periodically changed by the bending portion 87 and is curved in a sine curve wave shape. As a result, the slit 85 formed in a wavy shape along the longitudinal direction has a cut surface 91 with respect to a predetermined radial straight line X orthogonal to the center line O of the corrugated tube 80 at any position in the longitudinal direction. It is considered to be a vertical plane orthogonal to each other.

In the present embodiment, the cutting tool 101 is reciprocated with respect to the corrugated tube 80 by the amount of the gap G in a relatively constant cycle along the radial straight line X to form the slit 85. However, the slit 85 may be formed by reciprocating the corrugated tube 80 with respect to the cutting tool 101 by the amount of the gap G at a relatively constant cycle along the radial straight line X.

Next, a case where the connector cover 10 and the corrugated tube 80 are assembled to the connector 40 will be described.

First, the first cover 11 of the connector cover 10 is attached to the connector 40. Specifically, the first cover 11 is brought close to the upper portion at the rear end of the connector 40, and the locking rib 22 of the locking portion 21 of the first cover 11 is inserted into the locking groove 67 formed in the housing 43 of the connector 40. Engage in and engage. In this way, the electric wire 41 drawn from the connector 40 is drawn into the corrugated tube mounting portion 23 of the first cover 11 and arranged.

Next, the corrugated tube 80 is attached to the first cover 11 of the connector cover 10. Specifically, the corrugated tube 80 is brought close to the connector 40 to which the first cover 11 of the connector cover 10 is mounted, and the end portion of the corrugated tube 80 is placed on the corrugated tube mounting portion 23. Then, the locking ridge 24 of the corrugated tube mounting portion 23 enters the annular groove 82 of the corrugated tube 80, and the end portion of the corrugated tube 80 is held by the corrugated tube mounting portion 23. The corrugated tube 80 accommodates the electric wire 41 from the slit 85 inside the corrugated tube 80.

After that, the second cover 12 is rotated toward the first cover 11 side around the connecting portion by the hinge portion 13. Then, the second cover 12 is abutted against the first cover 11 attached to the connector 40 and to which the corrugated tube 80 is locked.

Then, the locking rib 68 formed in the housing 43 of the connector 40 is inserted into and engaged with the locking step portion 32 of the locking portion 31 of the second cover 12. Further, the locking ridge 34 of the corrugated tube mounting portion 33 is inserted into the annular groove 82 of the corrugated tube 80 arranged in the corrugated tube mounting portion 33 of the second cover 12, and the end portion of the corrugated tube 80 is the first cover 11 and It is held by the corrugated tube mounting portions 23 and 33 of the second cover 12.

When the second cover 12 is abutted against the first cover 11, the lock piece 55 of the second cover 12 is inserted into the lock hole 50 of the first cover 11, and the claw portion of the lock piece 55 is the lock hole 50. Locked to the convex part. Further, the lock piece 52 of the first cover 11 enters the concave portion 56 of the second cover 12, and the locking concave portion of the lock piece 52 locks the locking convex portion 56a of the concave portion 56. As a result, the first cover 11 and the second cover 12 are locked in a state of being abutted against each other.

By assembling the connector cover 10 and the corrugated tube 80 to the connector 40 in this way, the electric wire 41 drawn out from the connector 40 is covered and protected by the connector cover 10 and the corrugated tube 80.

Here, a reference example will be described.
The same components as those in the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.
FIG. 8 is a plan view of a part of the connector cover 10 and the corrugated tube 80A for explaining a reference example. 9A and 9B are views showing the corrugated tube 80A of the reference example shown in FIG. 8, where FIG. 9A is a plan view and FIG. 9B is a front view. 10A and 10B are views showing a corrugated tube 80A used in the reference example shown in FIG. 8, where FIG. 10A is a cross-sectional view taken along the radial direction, and FIG. It is a cross-sectional view.

As shown in FIG. 8, in the reference example, the corrugated tube 80A is provided, and the corrugated tube 80A is held by the connector cover 10. As shown in FIGS. 9A and 9B, the corrugated tube 80A is formed with a linear slit 85A along the longitudinal direction.

A cutting tool 101 is also used when forming the slit 85A in the corrugated tube 80A. Specifically, the guide rod 103 is inserted into the corrugated tube 80, and the corrugated tube 80 is pushed toward the cutting tool 101. Then, the cutting blade 105 forms a linear slit 85A along the longitudinal direction.

At this time, the guide rod 103 may be displaced relative to the corrugated tube 80A by the amount of the gap G in the radial direction orthogonal to the axial direction. Then, as shown in FIG. 10A, the slit 85A is formed in the longitudinal direction at a position shifted in parallel in the radial direction. In the slit 85A formed at the position shifted in the radial direction in this way, the inclination angle θ of the cut surface 91 with respect to the linear straight line La in the radial direction passing through the end portion of the cut surface 91 in the inner circumference of the center line O and the corrugated tube 80A. Becomes larger in the longitudinal direction.

When the corrugated tube 80A is pulled in the connector 40 in which the corrugated tube 80A is held by the connector cover 10, the corrugated tube 80A is given a force to reduce the diameter by the tensile force. Then, as shown in FIG. 11 (b), the outer diameter of the corrugated tube 80A becomes smaller at once because the cut surfaces 91 of the slits 85A abutting each other are displaced and the edges overlap with each other. Then, the annular groove 82 may come off from the locking ridges 24 and 34 of the first cover 11 and the second cover 12 of the connector cover 10, and the corrugated tube 80A may come out from the connector cover 10. Then, the electric wire 41 is exposed between the connector cover 10 and the corrugated tube 80A, and the electric wire 41 is not protected.

On the other hand, according to the electric wire protection structure of the connector according to the present embodiment, the corrugated tube 80 has slits 85 that are curved in a wavy shape so that the directions of the corrugated tubes 80 are alternately changed in the plurality of curved portions 87 along the longitudinal direction. is doing. Therefore, the electric wire 41 can be easily accommodated inside the corrugated tube 80 through the slit 85. Further, the slit 85 is curved in a wavy shape along the longitudinal direction, and the cut surface 91 of the slit 85 is a vertical surface orthogonal to a predetermined radial straight line X orthogonal to the center line O of the corrugated tube 80. Has been done. As a result, when a tensile force in the pulling direction acts on the corrugated tube 80, the riding direction of the edge portion of the slit 85 of the corrugated tube 80 (arrow P in FIG. 4) changes depending on the location. Further, by holding the plurality of locking ridges 24, 34 of the connector cover 10 in the annular groove 82 of the corrugated tube 80, the slits 85 are suppressed from being displaced from each other on the opposite cutting surfaces 91 in the longitudinal direction and cut. The adhesion between the surfaces 91 can be enhanced. Therefore, the cut surface 91 of the slit 85 of the corrugated tube 80 held by the connector cover 10 is brought into close contact with each other, so that the edges of the slit 85 can be prevented from overlapping and the outer diameter can be prevented from being reduced at once.
Further, it is not necessary to set the corrugated tube 80 on the connector cover 10 in consideration of the orientation of the slit 85, and the assembling workability is not deteriorated.

As a result, it is possible to maintain a good protection state of the electric wire 41 by the connector cover 10 and the corrugated tube 80 having good assembling property.

Further, the slit 85 of the present embodiment is curved in a sine curve wave shape and is continuous in the longitudinal direction of the corrugated tube 80. Therefore, the cut surfaces 91 of the slits 85 of the corrugated tube 80 are brought into close contact with each other smoothly and reliably, and the overlap of the edges of the slits 85 can be more reliably suppressed.

The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary as long as the present invention can be achieved, and are not limited.

Here, the features of the above-described embodiment of the electric wire protection structure of the connector according to the present invention are briefly summarized and listed below in [1] and [2], respectively.
[1] A bellows-cylindrical corrugated tube (80) through which an electric wire (41) drawn from a connector (40) is inserted.
The end of the corrugated tube (80) is held from the outer peripheral side by a plurality of locking ridges (24, 34) assembled to the connector (40) and entering the annular groove (82) of the corrugated tube (80). With a connector cover (10)
The corrugated tube (80) has a slit (85) formed by being curved in a wavy shape along the longitudinal direction.
The slit (85) has a cut surface (91) formed of a vertical plane orthogonal to a predetermined radial straight line (X) orthogonal to the center line (O) of the corrugated tube (80) in the longitudinal direction. The wire protection structure of the connector, which is characterized by having.
[2] The slit (85) is curved in a sine curve wave shape and is continuous in the longitudinal direction of the corrugated tube (80).
The electric wire protection structure of the connector according to the above [1].

10 ... Connector cover 24, 34 ... Locking ridge 40 ... Connector 41 ... Electric wire 80 ... Corrugated tube 82 ... Circular groove 85 ... Slit 91 ... Cutting surface O ... Center line X ... Radial straight line

Claims (2)

A bellows-cylindrical corrugated tube through which an electric wire drawn from a connector is inserted,
A connector cover, which is assembled to the connector and holds the end of the corrugated tube from the outer peripheral side by a plurality of locking ridges that enter the annular groove of the corrugated tube, is provided.
The corrugated tube has a slit formed by being curved in a wavy shape along the longitudinal direction.
The slit has a cut surface consisting of a vertical plane orthogonal to a predetermined radial straight line orthogonal to the center line of the corrugated tube over the longitudinal direction.
The wire protection structure of the connector is characterized by that. The slit is curved in a sine curve wave shape and is continuous in the longitudinal direction of the corrugated tube.
The electric wire protection structure of the connector according to claim 1.

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