JP2017108587A - Connector and wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector which can surely suppress a foreign matter from entering inside of an electric wire cover and inside of a corrugated tube so as to prevent an electric wire from being damaged, and a wire harness.SOLUTION: The connector comprises: a housing 11 which has a terminal storage hole 11b at a rear end part 11a thereof and allows an electric wire bundle 2 to be introduced through the terminal storage hole 11b when assembled; and an electric wire cover 12 which is mounted on the rear end part 11a, covering the electric wire bundle 2. The electric wire cover 12 comprises a pair of half-split members 13. Each of the half-split members 13 has a locking part 15 which protrudes inward from the rear end part 11a of a half-tube part 14 and is locked to a cornice groove 4a of the corrugated tube 4; and comprises an elastic member 18, provided on an inner surface of the half-tube part 14, which is configured to have a required thickness, thicker than a dimension determined by adding a dimension of a clearance to a depth dimension of the cornice groove 4a of the corrugated tube 4, at which the member can deform and then enter the vicinity of a bottom face of the cornice groove 4a of the corrugated tube 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a connector and a wire harness that cover a wire bundle led out from a rear end portion of a connector body and protected by a corrugated tube with a connector cover.

  Conventionally, the wire bundle led out from the rear end of the connector main body mounted on the vehicle is protected with a corrugated tube, and the lead-out portion between the connector main body and the corrugated tube of the electric wire bundle is protected with a cover member Is known (see, for example, Patent Document 1).

  In the connector disclosed in Patent Document 1, as shown in FIG. 6, a plurality of locking means 20F, 20C, 20R are formed on the inner periphery of a pair of half members 13 constituting the wire cover. By fitting the means into the bellows groove of the corrugated tube, the corrugated tube is fixed to the wire cover.

  Since some of the locking means 20F and 20C are configured by protruding locking portions 21a and 21b arranged only in a part in the circumferential direction, all the locking means are continuous over the entire circumference. As compared with the above, the contact area between the locking means 20F, 20C and the bellows groove is small. Therefore, the frictional resistance at the time of fitting between the locking means 20F, 20C and the bellows groove is small, and the workability of assembling the electric wire cover and the corrugated tube is good.

Japanese Patent Laid-Open No. 2003-153212

  However, in the connector disclosed in Patent Document 1, the corrugated tube has some errors in the size and the uneven shape depending on the manufacturer, and the connector cover is attached to the connector housing and the corrugated tube. There was rattling between the cover and the corrugated tube.

  For this reason, in such a conventional connector, sand or other foreign matter has entered from the corrugated tube side and mainly enters from the place where rattling occurs between the connector cover and the corrugated tube. There has been a problem in that each wire of the wire bundle protected by the corrugated tube and the connector cover is damaged by foreign matter.

  For example, in the case of a conventional connector, after a foreign substance such as sand has entered, the connector cover and the corrugated tube are relatively displaced or vibrated by slight vibration, so the corrugated tube and each electric wire repeatedly interfere with each other, In the vicinity of the base where the wire bundle is connected to the connector housing, the wires may be damaged.

  Further, in the conventional connector, the connector cover is compared with a connector cover that is continuous over the entire circumference by a part of the locking means 20F and 20C arranged only in part in the circumferential direction. The workability of assembling the pair of half members 13 and the corrugated tube is improved. However, since the structure has a plurality of locking means 20F, 20C, 20R, a plurality of locking means 20F, 20C, 20R are provided. There is a problem in that workability is poor because it is necessary to fit in the recess of the corrugated tube accurately.

  In addition, since the conventional connector has a plurality of locking means 20F, 20C, and 20R, there is a problem that there is no versatility due to restrictions such as the pitch, depth, and shape of the annular irregularities of the corrugated tube. there were.

  The present invention has been made to solve the above-described problems, and reliably suppresses the entry of foreign matter into the inner side of the wire cover and the inner side of the corrugated tube regardless of the manufacturer's corrugated tube. An object of the present invention is to provide a connector and a wire harness that can prevent damage to an electric wire and have improved versatility.

  In order to achieve the above object, a connector according to the present invention has a plurality of terminal receiving holes at a rear end, a housing from which an electric wire bundle is led out from the terminal receiving holes at the time of assembly, A cylindrical wire cover attached to the end, and the wire cover is formed of a pair of half members, and each half member covers the corrugated tube covering the wire bundle with a necessary gap. Provided integrally protruding inward from the rear end of the half-cylinder part, provided on the inner surface of the half-cylinder part, and a locking part for engaging with the bellows groove of the corrugated tube, and filling the gap during assembly. And an elastic member that is deformed so as to enter the bellows groove of the corrugated tube.

  With this configuration, when attaching the electric wire cover to the housing and the corrugated tube, the electric wire cover can be easily prevented from being displaced from the corrugated tube by engaging the engaging portion with the bellows groove of the corrugated tube through which the electric wire is inserted. Further, the elastic member bonded to the inner surface of the electric wire cover with an adhesive can be deformed along the outer peripheral shape of the corrugated tube, and the gap between the electric wire cover and the corrugated tube can be filled.

  In addition, on one end side of each half member, it is locked to the bellows groove of the corrugated tube on the inner periphery by one locking portion, so restrictions on the pitch, depth, shape, etc. of the corrugated tube Therefore, versatility can be improved and workability can be improved.

  Therefore, even if it is a corrugated tube of any manufacturer, it is possible to reliably prevent foreign matter from entering the inner side of the wire cover and the inner side of the corrugated tube to prevent the wire from being damaged, and to improve versatility. it can.

  The connector of the present invention has a contact surface portion that comes into contact with the corrugated tube with respect to the elastic member, and the contact surface portion has a planar shape or a cylindrical shape before being attached to the housing and the corrugated tube of the wire cover. You may comprise so that it may have a surface shape.

  With this configuration, the elastic member can be sufficiently deformed when the electric wire cover is attached to the housing and the corrugated tube, and the gap between the electric wire cover and the corrugated tube can be reliably filled. In the case of a planar shape, it is not necessary to process the surface of the elastic member, so that the cost can be reduced. Further, in the case of the cylindrical surface shape, less material is required, and the pressure is evenly applied to the corrugated tube, so that the holding can be stabilized.

  In the connector of the present invention, the pair of halved members may be configured so as to divide a female connecting portion and a male connecting portion that are integrally connected to each other so as to constitute an electric wire cover. .

  With this configuration, since the pair of halved members are self-coupled to form the wire cover, assembly is easy. That is, the locking is completed simultaneously with the mounting operation. In addition, no additional fixing member is required.

  A wire harness according to the present invention is attached so as to be covered by the connector having any one of the above-described configurations, a wire bundle led out from the terminal receiving hole of the connector, and the wire bundle, and the wire cover is covered. A corrugated tube.

  With this configuration, any manufacturer's corrugated tube can reliably prevent foreign matter from entering the inside of the wire cover and the inside of the corrugated tube, preventing damage to the wire and improving versatility. Can be made.

  According to the present invention, in any corrugated tube manufactured by any manufacturer, it is possible to reliably prevent foreign matter from entering the inner side of the electric wire cover and the inner side of the corrugated tube to prevent the electric wire from being damaged, and to have versatility. A connector and a wire harness that can be improved can be provided.

It is a perspective view which shows the wire harness and connector which concern on embodiment of this invention. It is principal part sectional drawing which shows the wire harness and connector which concern on embodiment of this invention. The wire harness and connector which concern on embodiment of this invention are shown, (a) A figure is a perspective view of the state which disassembled and spaced apart a pair of half member, (b) A figure is the AA cross section in (a) figure FIG. The wire harness and connector which concern on embodiment of this invention are shown, (a) A figure is a perspective view of the state which a pair of half member joined, (b) A figure is BB sectional drawing in (a) figure It is. It is a figure which shows the modification regarding the electric wire cover which concerns on embodiment of this invention, (a) A figure is a disassembled perspective view of a pair of half member which comprises an electric wire cover, (b) A figure is a pair of It is a perspective view of the electric wire cover which united the half member. It is a perspective view which shows a part of electric wire cover which is a component of the connector which concerns on a prior art example.

  Hereinafter, embodiments of a connector and a wire harness according to the present invention will be described with reference to the drawings.

The wire harness 1 will be described.
As shown in FIG. 1, the wire harness 1 according to this embodiment includes an electric wire bundle 2, a corrugated tube 4, and a connector 10.

  The electric wire bundle 2 includes, for example, a covered electric wire as a plurality of data lines, a covered electric wire as a power supply line, and an earth wire. A terminal is connected to the end of each electric wire.

  The corrugated tube 4 has a wavy shape with a trapezoidal cross-sectional shape in the axial direction, and has a bellows tube shape in appearance. The corrugated tube 4 is a plastic molded body, and there are one having an axial slit and one not having a slit. In this embodiment, a corrugated tube 4 having no slit is used. When a gate tube having an axial slit is used, half-wrapping with an adhesive tape is performed on the outer periphery after the wire bundle 2 is inserted through the slit so that the slit does not open.

The connector 10 will be described.
The connector 10 includes a housing 11 and an electric wire cover 12 connected to the rear end portion 11 a of the housing 11. Each of the housing 11 and the wire cover 12 is a molded body, and is preferably molded from a resin having excellent moldability, durability, heat resistance, cold resistance, weather resistance, and necessary strength.

  The housing 11 has a plurality of terminal accommodating holes 11b penetrating from the front end to the rear end, and is female or male provided at the end of each electric wire of the wire bundle 2 from the rear end of each terminal accommodating hole 11b. A resin lance (not shown) provided in the middle of the terminal accommodating hole 11b locks the rear end portion in the insertion direction of the terminal fitting 3 so that the terminal fitting 3 can be accommodated and the terminal fitting 3 cannot be pulled out. It is configured as follows. Therefore, the housing 11 leads the wire bundle 2 from the terminal accommodating hole 11b at the time of assembly. The housing 11 has locking projections 11c for connecting to the electric wire cover 12 on the outer surfaces on both sides of the rear part.

  As shown in FIGS. 4A and 4B, the wire cover 12 has a pair of half members 13A and 13B. The pair of halved members 13A and 13B have four pairs so that the female connecting portion 16 and the male connecting portion 17 are opposed to each other as a pair. The pair of half members 13A and 13B are brought into contact with each other with the butted surfaces 141 and 142 facing each other at the time of assembly so that the four pairs of female connecting portions 16 and male connecting portions 17 are integrally connected to each other. 12 is configured.

  The pair of halved members 13A and 13B have a pair of overhanging portions 13c that are sandwiched on both sides of the rear portion of the connector 10, and each overhanging portion 13c has an engagement hole 13d. The pair of halved members 13A and 13B are configured such that, at the time of assembly, each engagement hole 13d is engaged with the locking projection 11c of the housing 11 and abutted so that the female connecting portion 16 and the male connecting portion 17 are engaged. The electric wire cover 12 is configured to surround the outer periphery of the rear portion of the housing while being connected to the rear portion of the housing 11.

  Each half member 13A, 13B has the half cylinder part 14 in the rear part. The pair of half-cylinder portions 14 form a rectangular tube space 22 and cover the corrugated tube 4 with a necessary gap at the time of assembly. An intermediate portion of the pair of half members 13A and 13B corresponding to the space between the rear surface of the connector 10 and the corrugated tube 4 is a tapered rectangular tube space that expands in the direction of the connector 10 during assembly.

  Each half member 13A, 13B protrudes inward integrally from the rear end part of the half cylinder part 14, and has the latching | locking part 15 latched to the bellows groove | channel 4a of the corrugated tube 4 at the time of an assembly | attachment. One locking portion 15 is provided for each half member 13A, 13B.

  Each half member 13 </ b> A, 13 </ b> B includes an elastic member 18 provided on the inner surface of the half tube portion 14 (that is, the inner surface of the rectangular tube space 22) via an adhesive 19. Here, the adhesive 19 is an inclusion that bonds the inner peripheral surface of the half-cylinder part 14 and the elastic member 18, and a coating film is formed on either the inner peripheral surface of the half-cylinder part 14 or the elastic member 18. In addition to the adhesive, it also includes a pressure-sensitive adhesive, and includes a commercially available double-sided adhesive tape.

  The elastic member 18 provided on the inner surface of the half tube portion 14 is made of a relatively soft rubber, sponge, or elastomer. The elastic member 18 is provided in a thickness larger than the dimension obtained by adding the dimension of the gap and the depth dimension of the bellows groove 4a of the corrugated tube 4 and is compressed by the crest 4b of the corrugated tube 4 during assembly. The thickness of the corrugated tube 4 is set to a required thickness so as to be deformed so as to correspond to the bellows groove 4a of the corrugated tube 4 and close to the bottom surface of the bellows groove 4a without being compressed. In this embodiment, the contact surface portion 18a that is provided over the square tube space 20 so as to coincide with the abutting surfaces on both sides of the half tube portion 14 and contacts the corrugated tube 4 before assembly is provided in the housing 11 of the wire cover 12. And in the state before attachment to the corrugated tube 4, it has a planar shape.

Next, the operation will be described.
When the electric wire cover 12 is attached to the housing 11 and the corrugated tube 4, the wire harness 1 and the connector 10 are engaged with the electric wire by engaging the engaging portion 15 with the bellows groove 4a of the corrugated tube 4 through which the electric wire bundle 2 is inserted. The cover 12 can be easily connected to the corrugated tube 4 so as not to be displaced, and the elastic member 18 bonded to the inner surface of the electric wire cover 12 by the adhesive 19 is deformed to the corrugated tube 4 along the outer peripheral shape. A gap between the electric wire cover 12 and the corrugated tube 4 can be filled.

  In addition, the wire harness 1 and the connector 10 are locked to the bellows groove 4a of the corrugated tube 4 on the inner periphery by one locking portion 15 on one end side of each half member 13A, 13B. Restrictions on the pitch, depth, shape, etc. of the annular corrugations of the corrugated tube 4 are reduced, so that versatility can be improved and workability can be improved. Therefore, even if it is the corrugated tube 4 of any manufacturer, it can suppress the entrance | invasion of a foreign material to the inner side of the electric wire cover 12 and the inner side of the corrugated tube 4, and can prevent that an electric wire is damaged, and improves versatility. Can be made. In addition, the latching | locking part 15 may extend from a part of inner periphery instead of a semicircle.

  In addition, the wire harness 1 and the connector 10 have a required thickness that allows the elastic member 18 to be deformed into a portion that is compressed by the peak portion 4b of the corrugated tube 4 and a portion into which the bellows groove 4a of the corrugated tube 4 enters without being compressed. Since it is set, the elastic member 18 can be sufficiently deformed when the electric wire cover 12 is attached to the housing 11 and the corrugated tube 4, and the gap between the electric wire cover 12 and the corrugated tube 4 can be reliably filled.

  Further, in the wire harness 1 and the connector 10, since the pair of half members 13A and 13B are provided with the female coupling portion 16 and the male coupling portion 17 separated, the pair of half members 13A and 13B are self-coupled. And since the electric wire cover 12 is comprised, an assembly | attachment is easy. That is, the locking is completed simultaneously with the mounting operation. In addition, no additional fixing member is required. Moreover, since the pair of connection parts 16 and 17 is provided in each half member 13A, 13B, the connection part is provided in the front part (connector side) and rear part (corrugation side) of a half member, respectively. By doing so, it is possible to prevent the connector and corrugation from coming off. Since the female connecting portion 16 and the male connecting portion 17 are provided in each half member, they can be locked in two directions, so that they can be integrated more firmly.

Next, some modifications related to the wire cover according to the above-described embodiment will be described.
FIG. 5A is an exploded perspective view of a pair of half members constituting the electric wire cover, and FIG. 5B is a perspective view of an electric wire cover in which the pair of half members are combined.

  The electric wire cover 12 shown in FIGS. 5A and 5B is exactly the same as the electric wire cover 12 according to the above-described embodiment. The only difference is the elastic member 18A. This difference is that, in the above-described embodiment, the elastic member 18 provided on the inner surface of the semi-cylindrical portion 14 has the contact surface portion 18a that contacts the corrugated tube 4 at the time of assembly, the housing 11 of the electric wire cover 12 and the corrugated tube 4. The elastic member 18A of this modified example has a contact surface portion 18b that comes into contact with the corrugated tube 4 at the time of assembly, and the housing 11 of the electric wire cover 12 and the corrugated tube. 4 has a cylindrical surface shape in a state before being attached to 4. In any case, it is thicker than the sum of the size of the gap and the depth of the bellows groove of the corrugated tube, and is deformed so as to enter the vicinity of the bottom of the bellows groove of the corrugated tube during assembly. It only has to be configured.

  According to the present invention, in any corrugated tube manufactured by any manufacturer, it is possible to reliably prevent foreign matter from entering the inner side of the electric wire cover and the inner side of the corrugated tube to prevent the electric wire from being damaged, and to have versatility. It has the effect that it can be improved, and is useful for all connectors and wire harnesses that are led out from the rear end portion of the connector body and protected by a corrugated tube and cover the wire bundle with a connector cover.

DESCRIPTION OF SYMBOLS 1 Wire harness 2 Wire bundle 4 Corrugated tube 4a Bellows groove 4b Mountain part 10 Connector 11 Housing 11a Rear end part 11b Terminal accommodation hole 12 Electric wire cover 13A, 13B Half member 14 Half cylinder part 15 Locking part 16 Female connection part 17 Male Connecting part 18, 18A Elastic member 18a, 18b Contact surface part 19 Adhesive

Claims (5)

A housing having a plurality of terminal receiving holes at the rear end, and a wire bundle being led out from the terminal receiving holes during assembly;
A cylindrical wire cover that surrounds the wire bundle and is attached to the rear end,
The wire cover is composed of a pair of half members,
Each of the half members is provided so as to project integrally inward from the rear end portion of the half tube portion covering the corrugated tube covering the wire bundle with a required gap, and is latched in the bellows groove of the corrugated tube And a resilient member provided on the inner surface of the half-cylinder portion and deforming so as to fill the gap and enter the bellows groove of the corrugated tube during assembly.   The said elastic member has a contact surface part which contacts the said corrugated tube, The said contact surface part has a planar shape in the state before the attachment to the said housing and the said corrugated tube of the said electric wire cover. Item 1. The connector according to item 1.   The elastic member has a contact surface portion that comes into contact with the corrugated tube, and the contact surface portion has a cylindrical surface shape in a state before the wire cover is attached to the housing and the corrugated tube. The connector according to claim 1.   The pair of halves are provided with a female connecting part and a male connecting part, which are integrally connected to each other so as to constitute the electric wire cover. Connector. The connector according to any one of claims 1 to 4,
A wire bundle led out from the terminal receiving hole of the connector;
A wire harness comprising: a corrugated tube attached so as to be covered with the wire bundle and covered with the wire cover.

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