JP4728689B2 - Attachment for U-shaped wire holder - Google Patents

Description

  The present invention relates to an attachment for a U-shaped electric wire receiver used for assembling a wire harness.

  A wire harness for an automobile is assembled as follows. First, a U-shaped electric wire holder is installed along the assembly diagram on the wiring board on which the assembly diagram of the wire harness is drawn. Next, a large number of electric wires cut to a predetermined length and attached with connectors and the like are wired according to the assembly diagram while being dropped into the U-shaped electric wire holder. Thereafter, a wire or the like is wound around the wired wire bundle, and accessories such as a protector are attached to complete the wire harness.

  The U-shaped wire catcher is installed mainly at the location where the wire branches, but if the distance between the parallel rising parts of the U-shaped wire catcher is too wide for the thickness of the wire bundle to be formed, The deviation from the center position of the wire bundle becomes large, and the assembly accuracy of the wire harness decreases. For this reason, conventionally, a plurality of types of U-shaped wire receptacles having different intervals between parallel rising portions are prepared, and a U-shaped wire receptacle having a size corresponding to the thickness of the wire bundle is attached to the wiring board. However, in this method, the size of the U-shaped wire receptacle increases, and it is necessary to use different U-shaped wire receptacles of different sizes according to the thickness of the wire bundle. Installation work is very troublesome.

  In order to avoid this problem, a U-shaped wire receptacle of the same size is attached to the wiring board, and each U-shaped wire receptacle is sized according to the thickness of the bundle of wires at the position (parallel rising portion It has been proposed to attach attachments at intervals (Patent Document 1).

Japanese Patent No. 2822191

  However, the attachment (adapter) disclosed in Patent Document 1 has been found to have the following problems according to the result of the prototype test. That is, since the attachment described in Patent Document 1 has a structure in which a circumferential groove is formed on the outer peripheral surface of the U-shaped plate member, and this circumferential groove is fitted to the U-shaped wire receiver, the U-shaped wire receiver and the attachment are provided. There is a problem that when the completed wire harness is removed, the attachment is detached from the U-shaped electric wire holder. Moreover, since a U-shaped wire insertion groove is formed on a plate member of a predetermined thickness, the plate thickness surface comes into contact with the wire bundle, and until the wire bundle in the attachment is wound when the tape is wound. There is also a problem that it is difficult for fingers to enter and it is difficult to wind the tape firmly around the electric wire branch.

  A first object of the present invention is to provide an attachment for a U-shaped electric wire receiving device that has a strong fitting force with the U-shaped electric wire receiving device and is difficult to be detached from the U-shaped electric wire receiving device.

  The second object of the present invention is to provide a U-shaped electric wire holder that can easily wrap a finger around the wire bundle in the attachment when the tape is wound around the wire bundle, and the tape can be tightly wound around the wire bundle in the attachment. It is to provide an attachment.

An attachment for a U-shaped wire receiving device according to the present invention is attached to a U-shaped wire receiving device having a lower bending portion and a parallel rising portion, and is attached to the lower bending portion of the U-shaped electric wire receiving device. A bent portion and a pair of straight portions attached to the parallel rising portion, and a hole into which the rising portion of the U-shaped wire holder is inserted is formed in the straight portion. The inner diameter on the side is larger than the outer diameter of the rising part and the inner diameter on the upper end side is smaller than the outer diameter of the rising part, so that when the rising part is inserted into the hole, the tip of the rising part The fitting force between the portion and the hole is improved , and further, the bent portion and the straight portion of the section located on the inner side of the U-shaped electric wire receiver becomes thinner toward the inner side. Formed into shape And it is characterized in that is.

  The attachment for a U-shaped wire receiving device according to the present invention may have a pair of straight portions inclined outward or inward.

  According to the present invention, a taper hole is formed in each of the pair of linear portions of the attachment, and this hole improves the fitting force with the rising portion of the U-shaped electric wire holder. Can be removed from the electric wire holder, and the work of repeatedly assembling a wire harness of the same size can be performed efficiently.

  In addition, if the pair of linear portions of the attachment is inclined outward or inward, the attachment elastically deforms so that the pair of linear portions become substantially parallel when the attachment is attached to the U-shaped electric wire holder. By adding an elastic repulsion force, it is possible to further increase the difficulty of detachment of the attachment from the U-shaped wire holder.

  In addition, if the portion of the attachment located inside the U-shaped wire receptacle is formed into a thin-walled cross-sectional shape that decreases in thickness toward the inside, when the tape is wound around the wire bundle, Since it is easy to insert fingers, it is possible to wind the tape firmly and manufacture a wire harness with high assembly accuracy.

Embodiment 1 FIG. 1 shows an embodiment of the present invention. In the figure, 10 is a U-shaped wire receptacle attached to the wiring board 12, and 14 is an attachment attached to the U-shaped wire receptacle 12. FIG. 1A shows a state before the attachment 14 is attached to the U-shaped electric wire holder 10, and FIG. 1C shows a state after the attachment 14 is attached. The U-shaped electric wire holder 10 is formed of a metal round bar, and includes a lower curved portion 16, a parallel rising portion 18, and a support portion 20, and the support portion 20 is fixed to the wiring board 12 with a nut 22. .

  The attachment 14 has a bent portion 24 attached to the lower curved portion 16 of the U-shaped electric wire receiver 10 and a pair of straight portions 26 attached to the parallel rising portion 18 of the U-shaped electric wire receiver 10 as a whole. It is substantially U-shaped. A circumferential groove 28 into which the lower curved portion 16 of the U-shaped electric wire receiving device 10 and the lower portion of the parallel rising portion 18 enter is formed continuously outside the bent portion 24 and outside the lower portion p of the linear portion 26. Further, the straight portion 26 has a portion q above the intermediate portion protruding outward from the lower portion p, and a hole 30 into which the rising portion 18 of the U-shaped electric wire holder 10 is inserted is formed in this portion q. . The hole 30 is formed so as to be continuous with the circumferential groove 28, but has a taper whose inner diameter on the lower end side is larger than the outer diameter of the rising portion 18 and whose inner diameter on the upper end side is smaller than the outer diameter of the rising portion 18. It is in the shape.

  Therefore, when the attachment 14 is attached to the U-shaped electric wire holder 10, as shown in FIGS. 1C to 1D, the lower curved portion 16 of the U-shaped electric wire holder 10 and the lower portion of the parallel rising portion 18 are circumferential grooves 28. In addition, the rising portion 18 of the U-shaped electric wire receiver 10 is inserted into the hole 30, and the tip end portion of the rising portion 18 can be tightly fitted into the tapered hole 30 simply by pressing the attachment 14 lightly from above. . For this reason, when taking out the completed wire harness, the attachment 14 is not detached from the U-shaped electric wire receiver 10 together with the wire harness.

  Moreover, as shown to FIG.1 (D) and (E), as shown to FIG.1 (D) and (E), the part located in the inside of the U-shaped electric wire holder 10 of the bending part 24 and the linear part 26 of the attachment 14 becomes thin. The cross section is formed into a thin tip shape. In this way, when the tape is wound around the wired wire bundle, it becomes easy for fingers to enter the wire bundle in the attachment 14, so that the tape can be tightly wound, and a wire harness with high assembly accuracy can be obtained. Can be manufactured.

Embodiment 2 FIG. 2 shows another embodiment of the present invention. In the first embodiment, the pair of linear portions 26 of the attachment 14 are formed in parallel, but in this embodiment, the linear portions 26 on both sides of the attachment 14 are slightly inclined outward as shown in FIG. is there. Since the other configuration is the same as that of the first embodiment, the same parts are denoted by the same reference numerals. In this case, when the attachment 14 is attached to the U-shaped wire holder 10 as shown in FIG. 2B, the attachment 14 is elastically deformed so that the pair of linear portions 26 are substantially parallel. A repulsive force is applied, the contact resistance between the attachment 14 and the inside of the U-shaped electric wire holder 10 is increased, and the difficulty of detachment of the attachment 14 from the U-shaped electric wire holder 10 can be further increased.

Embodiment 3 FIG. 3 shows still another embodiment of the present invention. In this embodiment, as shown in FIG. 3A, the straight portions 26 on both sides of the attachment 14 are slightly inclined inward. Since the other configuration is the same as that of the first embodiment, the same parts are denoted by the same reference numerals. Even in such a configuration, when the attachment 14 is attached to the U-shaped electric wire receiver 10 as shown in FIG. 3B, the attachment 14 is elastically deformed so that the pair of linear portions 26 are substantially parallel, and the attachment is further attached. 14 and the inside of the U-shaped electric wire receiver 10 are increased, and the same effect as in the second embodiment can be obtained.

1 shows an embodiment of an attachment according to the present invention, (A) is a front view before mounting on a U-shaped wire receptacle, (B) is a side view, and (C) is after mounting on a U-shaped wire receptacle. (D) is the DD sectional view taken on the line of (C), (E) is the sectional view on the EE line of (C). The other embodiment of the attachment which concerns on this invention is shown, (A) is a front view before mounting | wearing with a U-shaped electric wire holder, (B) is a front view after mounting | wearing with a U-shaped electric wire holder. The still another embodiment of the attachment which concerns on this invention is shown, (A) is a front view before mounting | wearing with a U-shaped electric wire holder, (B) is a front view after mounting | wearing with a U-shaped electric wire holder.

Explanation of symbols

10: U-shaped electric wire holder 12: wiring board 14: attachment 16: lower curved portion 18: parallel rising portion 20: support 24: bent portion 26: straight portion 28: circumferential groove 30: hole

Claims (2)

An attachment for a U-shaped electric wire receiving device attached to a U-shaped electric wire receiving device having a lower curved portion and a parallel rising portion, wherein the bent portion mounted on the lower curved portion of the U-shaped electric wire receiving device and the parallel rising portion A pair of linear portions to be mounted is integrally formed, and a hole into which the rising portion of the U-shaped electric wire holder is inserted is formed in the linear portion, and the inner diameter of the lower end side is outside the rising portion. The diameter is larger and the inner diameter on the upper end side is smaller than the outer diameter of the rising part, so that when the rising part is inserted into the hole, the leading end of the rising part fits tightly into the hole and turned by a further of the bent portion and straight portions, the portion located inside the U-shaped wire receptacle, characterized in that as the thickness goes inward is formed in the cross-sectional destination thin becomes thinner Shaped wire receptacle for attachment.   The attachment for a U-shaped electric wire receiving device according to claim 1, wherein the pair of linear portions are inclined outward or inward.

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