JP4988480B2 - Harness connecting member - Google Patents

Description

  The present invention relates to a harness connecting member used in a harness circuit of an automobile, for example.

  In a harness circuit, it is often necessary to branch a plurality of branch lines from a trunk line, and conventionally, connection is performed by various methods. Therefore, conventionally, a part of the trunk line is stripped, a splice joint method that branches by crimping the branch line to the exposed conductor, and a circuit branch connector is arranged at the terminal part of the trunk line. Two methods are commonly used: a general-purpose connector and a joint connector method that branches using a crimp terminal.

  However, even in these systems, the number of components such as connectors, bus bars, connection terminals, and the like increases, and as a result, it takes time to assemble the harness circuit.

  In Patent Document 1, the present applicant uses a columnar holding body made of synthetic resin, attaches an electrical terminal to the holding body, inserts a pin terminal at the center of the holding body, and connects the electrical terminals to each other. A connecting member is proposed. In order to protect the holding body, it has been proposed to cover the periphery of the holding body with a protective cover using a hinge, or to insert a cylindrical protective cover having a bottom.

International Publication WO2007 / 049724

  However, the protective cover described in Patent Document 1 has a large structure or a problem that requires a complicated mold. In addition, the hinge type has a problem that the hinge is cut, and the insertion type can draw out the electric wire from one side only with respect to the columnar body.

  The objective of this invention is providing the harness connection member provided with the cover member which can eliminate the above-mentioned subject and can perform simple and reliable protection.

In order to achieve the above object, a harness connecting member according to the present invention has a pin terminal insertion hole in a central axis direction, and a plurality of electrical terminal insertion holes formed from the outside toward the inside communicate with the pin insertion hole. A substantially cylindrical holder made of a synthetic resin material and a cover member made of a cylindrical synthetic resin material having a C-shaped cross section with a split slit, and projecting protrusions outward at both ends of the holder. And forming an inclined surface that becomes lower toward the end on the outer side of these protrusions, and covers the cover member over the protrusions and is attached to the holding member, and the cover member is It restricts the movement in the longitudinal direction on the holding member by projections, characterized by connecting the both edges to close the split slit of the cover member.

  According to the harness connecting member according to the present invention, by covering the holding body assembled with the electric terminal with the cover member, it is possible to reliably prevent the component from being disassembled and to insulate the electric component.

  The present invention will be described in detail based on the embodiments shown in the drawings.

  The harness connecting member of the present embodiment mainly includes a holding body 1 made of a synthetic resin material having a pin terminal insertion hole 1a, a long groove 1b, and an electric terminal insertion hole 1c shown in FIG. 1, and an electric terminal insertion hole 1c of the holding body 1. A plurality of electrical terminals 2 having connecting portions 2a to be inserted, crimping portions 2b to which the cores of the electric wires 3 are connected, pin terminals 4 for connecting the electrical terminals 2 in the holding body 1, and the holding body 1 And a cover member 5 made of synthetic resin.

  The holding body 1 has a substantially cylindrical shape, and pin terminal insertion holes 1a for inserting the pin terminals 4 in the central axis direction of the holding body 1 are formed, and a total of, for example, four pieces are provided on the surface of the holding body 1 along the longitudinal direction. A long groove 1b having a substantially semicircular cross section is formed. Note that a total of two long grooves 1b may be formed vertically or horizontally symmetrically. Furthermore, the long groove 1b may not be formed.

  Further, at the bottom of the long groove 1b, one or a plurality of electric terminal insertion holes 1c are formed for each long groove 1b so as to communicate with the central pin terminal insertion hole 1a inside the holding body 1, so that each electric The terminal insertion hole 1c is configured such that the connecting portion 2a of the electric terminal 2 can be inserted.

  A projecting ring portion 1d for locking the end portion of the cover member 5 toward the outside is formed in an annular shape on the outer surface of both ends of the holding body 1 except for the long groove 1b. The inner end side of the projecting ring portion 1d is a wall portion, and the outer side is an inclined surface. In addition, the projecting ring portion 1d may be formed at an appropriate portion of the end portion of the holding body 1 even if it is not circular.

  The shape of the holder 1 is not limited to a cylindrical shape, and may be an elliptical column or a rectangular column. Moreover, although the magnitude | size is based also on the diameter of the electric wire 3 to be used, a diameter is 5-30 mm and length is about 20-150 mm. The holding body 1 is generally manufactured by injection molding a thermoplastic resin in a predetermined mold, and is manufactured by cutting the pin terminal insertion hole 1a, the long groove 1b, etc. after the columnar body is prepared in advance. May be.

  As the material used for the holding body 1, a thermoplastic resin is applied. Among them, polybutylene terephthalate (PBT), polypropylene (PP), etc. are high in terms of high thermal deformation temperature, high rigidity, electrical insulation characteristics, and mechanical characteristics. Is preferred.

  The electrical terminal 2 is formed by punching one conductive metal plate, and a cylindrical contact drawn into a cylindrical shape is connected to the front end connecting portion 2a bent inward with respect to the rear end crimping portion 2b. 2c is provided. The electrical terminal 2 may be formed by stamping and molding a copper plate or copper alloy plate into a predetermined shape, or by stamping and forming an Sn plated copper plate or copper alloy plate into a predetermined shape. The material is preferably brass in terms of strength and conductivity, and is further preferred in that the corrosion resistance is improved by Sn plating and the conductivity with the contact with the pin terminal 4 is easily obtained.

  The cylindrical contact 2c only needs to have a shape that conducts by contacting the pin terminal 4, and a tapered guide is provided at the base and tip of the cylindrical contact 2c so that the pin terminal 4 can be inserted from either side. It is desirable. Moreover, not only the cylindrical contact 2c but also a cut or the like can be used as the contact.

  If the pin terminal 4 has a structure in which a conductive metal plate is bent into a square shape and laminated in a plurality of layers, it is sufficiently reinforced and can be suitably used. The tip of the pin terminal 4 has a conical shape so that it can be easily inserted into the cylindrical contact 2 c of the electrical terminal 2. In addition, the pin terminal 4 may process and use a metal rod, and the cross-sectional shape may be round.

  The cover member 5 is used to prevent separation of the electric terminals 2 arranged around the holding body 1 and also to insulate the electric terminals 2. The cover member 5 is a cylindrical body having a C-shaped cross section made of a hard synthetic resin material. A flange 5b is provided on one edge side of the longitudinal slits 5a of the cover member 5, and a hole 5c is provided on the other edge side. Edges of the split slits 5a are overlapped with each other, an abutting part 5d is provided on the side of the collar part 5b, and the edge part on the side of the hole part 5c abuts, and the collar part 5b is a lock provided in the hole part 5c. The stopper 5e is locked.

  When assembling, as shown in FIG. 2, the connecting portion 2a of the electric terminal 2 connected to the electric wire 3 is inserted into the electric terminal insertion hole 1c of the holding body 1 as shown by the arrow in FIG. 1, and along the long groove 1b. The electric wire 3 is attached. Since the edge portion 2d of the connection portion 2a substantially matches the diameter of the pin terminal insertion hole 1a, the connection portion 2a is stably mounted in the pin terminal insertion hole 1a as shown in FIG. Is coincident with the center of the pin terminal insertion hole 1a. At this time, the inserted connecting portion 2a is locked by a locking portion (not shown) provided in the electric terminal insertion hole 1c so as not to drop off.

  In this state, when the pin terminal 4 is inserted into the pin terminal insertion hole 1a using a jig, the pin terminal 4 penetrates the cylindrical contact 2c of the connecting portion 2a of each electric terminal 2, and all the electric terminals 2 are connected. Since they are short-circuited by the pin terminals 4, all the electric wires 3 are electrically connected to each other and are electrically connected.

  The split slit 5 a of the cover member 5 is expanded with respect to the assembly thus assembled, and the cover member 5 is fitted so as to cover the holding body 1. In addition, the cover member 5 can be attached to the holding body 1 by using the inclined surface of the projecting ring portion 1d after being inserted into the electric wire 3 and shifted in the direction of the holding body 1. In this case, it is not necessary to widen the split slit 5a so much.

  FIG. 4 is a perspective view of a state in which the cover member 5 is mounted on the holding body 1. The cover member 5 covers the long groove 1 b of the holding body 1 in a state in which the electric wire 3 is mounted, and the flange portion 5 b of the cover member 5 is covered. By engaging the locking portion 5e in the hole 5c with the elastic force of the cover member 5, the split slits 5a of the cover member 5 are overlapped and closed. The cover member 5 is located inside the projecting ring portion 1d, and movement in the longitudinal direction with respect to the holding body 1 is restricted.

  When removing the cover member 5, the cover member 5 may be slightly reduced in diameter so that the collar portion 5b is removed from the locking portion 5e.

  FIG. 5 shows a cover member 11 according to the second embodiment. Split slits 11a are formed in steps, and a pair of flange portions 11b and hole portions 11c are formed symmetrically on both sides of the cover member 11. A locking portion 11e is provided in the hole portion 11c. Note that a portion corresponding to the abutting portion 5d of the first embodiment is omitted.

  Also in this cover member 11, the edges of the split slits 5a can be connected to each other as in the first embodiment.

1 is an exploded perspective view of Example 1. FIG. It is a perspective view of an assembly. It is sectional drawing of the state which inserted the electrical terminal in the holding body. It is a perspective view in the state where a cover member was installed. 6 is a perspective view of a cover member according to Embodiment 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Holding body 1a Pin terminal insertion hole 1b Long groove 1c Electric terminal insertion hole 1d Ring part 2 Electric terminal 3 Electric wire 4 Pin terminal 5, 11 Cover member 5a, 11a Slit part 5b, 11b Gutter part 5c, 11c Hole part 5e, 11e Locking part

Claims (4)

A substantially cylindrical holding body made of a synthetic resin material in which a plurality of electrical terminal insertion holes formed from the outside toward the inside are provided with a pin terminal insertion hole in the central axis direction and communicated with the pin insertion hole inside, and a split slit And a cover member made of a synthetic resin material having a cylindrical shape with a C-shaped cross section, and provided with protrusions on both ends of the holding body toward the outside, and lower toward the ends on the outside of these protrusions. An inclined surface is formed, and the cover member is placed on the holding body so as to get over the protrusion, and the cover member is restricted from moving in the longitudinal direction on the holding body by the protrusion. and, harness connecting member, characterized by connecting the both edges to close the split slit of the cover member.   The harness connecting member according to claim 1, wherein a flange portion is provided on one edge side of the split slit of the cover member and a hole portion is provided on the other edge side for connection.   The harness connecting member according to claim 2, wherein a locking portion is provided in the hole portion, and the flange portion is locked to the locking portion. Automobile harness circuit, characterized in that using a harness connecting member according to claim 1-3.

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