Grommet installation jig

Abstract

To easily attach a grommet having an assembly direction to a wire rod without violating the assembly direction by using a grommet installation jig having a simple configuration.SOLUTION: A grommet installation jig 3 is used by fitting into an insertion hole provided in the center of a grommet 2 in order to attach the grommet 2, which has an assembly direction, to a harness 1. The jig 3 has a tubular shape and includes a jig body 32 having an insertion portion 31 extending in the axial direction through which the harness 1 is inserted, and a notch portion for removing the harness 1 from the insertion portion 31 in a direction intersecting the axial direction when the harness 1 is inserted into the insertion portion 31.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a grommet installation jig used to install a grommet on a wire. [Background technology]

[0002] Conventionally, one known example of this type of technology is described in Patent Document 1 below. This technology relates to a jig used when attaching a grommet to a wire harness. This jig includes multiple jig bodies formed by dividing a cylindrical body equally in the circumferential direction. The multiple jig bodies have a tip side and a base side. Each base side is fixed to an operating rod that can reciprocate up and down and left and right. Each jig body can be displaced radially from its axis by operating each operating rod. In addition, the peripheral curved surface of each jig body forms an expanded contact surface that comes into contact with the inner peripheral surface of the opening of the grommet.

[0003] To attach grommets to a wire harness using this jig, before displacing each jig body in the radial direction, each jig body is moved toward the grommet and inserted into its opening. Then, each jig body is displaced radially to expand the grommet opening. Next, the wire harness is inserted between the jig bodies that are now open radially through the expanded grommet opening. Then, each jig body is moved from the grommet opening along the wire harness in the opposite direction to the insertion direction, and removed from the grommet opening. This shrinks the grommet opening, and the grommet is attached to the wire harness. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-190014 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the jig described in Patent Document 1 has a complex configuration for displacing each jig body in the radial direction. Furthermore, to insert and remove each jig body from the opening of the grommet, each jig body must be moved back and forth relative to the opening of the grommet. Some grommets have assembly directionality relative to the jig or wire harness. That is, some grommets are designed to be assembled to the jig or wire harness from either one end or the other end of the axial direction of the opening. For example, if a seal portion with directional sealing is provided on one end of the opening, the jig or wire harness must be assembled without destroying the shape of the seal portion. The above-described jig requires each jig body to be moved back and forth relative to the opening of the grommet, making it unsuitable for directional assembly grommets.

[0006] This disclosed technology has been made in consideration of the above circumstances, and its purpose is to provide a grommet installation jig with a simple configuration that enables a grommet with an assembly direction to be easily installed on a wire without violating that assembly direction. [Means for solving the problem]

[0007] In order to achieve the above object, the technology described in claim 1 is a grommet installation jig that is used by fitting into an insertion hole provided in a grommet in order to attach a grommet having an assembly direction to a wire, and is equipped with a jig body that has a tubular shape and has an insertion portion that extends in an axial direction through which the wire is inserted, and a removal means for removing the wire from the insertion portion in a direction intersecting the axial direction when the wire is inserted into the insertion portion.

[0008] According to the configuration of the above technology, the grommet installation jig is simply composed of a tubular jig body. To install the grommet on the wire, the jig is first inserted into the insertion hole of the grommet, which has an assembly direction, in a direction that satisfies the assembly direction. Then, the wire is inserted into the insertion portion, and the jig is further moved along the wire in a direction that satisfies the assembly direction, penetrating the grommet. Then, the jig is moved via the removal means so as to remove the wire from the insertion portion in a direction intersecting the axial direction.

[0009] In order to achieve the above object, the technology described in claim 2 is the technology described in claim 1, wherein the detachment means is a notch portion formed along the axial direction of the jig body and communicating with the insertion portion.

[0010] According to the configuration of the above technology, in addition to the effect of the technology described in claim 1, the wire can be removed from the insertion portion through the cutout portion simply by moving the grommet attachment jig in a direction intersecting its axial direction.

[0011] In order to achieve the above object, the technology described in claim 3 is the technology described in claim 1, wherein the detachment means is a dividing surface formed along the axial direction of the jig body, which can divide the jig body into at least two parts.

[0012] According to the configuration of the above technique, in addition to the effect of the technique described in claim 1, the wire can be released from the insertion portion simply by moving the jig body so as to separate it into two or more parts at the dividing surface.

[0013] In order to achieve the above object, the technology described in claim 4 is the technology described in any one of claims 1 to 3, wherein the jig body is formed from an elastic material.

[0014] According to the configuration of the above technology, in addition to the effect of the technology described in any one of claims 1 to 3, the jig body is elastic, which improves the ease of insertion of the jig body into the grommet, protection of the grommet, and ease of removal from the wire. [Effects of the Invention]

[0015] According to the technology described in claim 1, a grommet having an assembly direction can be easily attached to a wire without violating the assembly direction using a grommet attachment jig with a simple configuration.

[0016] According to the technology recited in claim 2, in addition to the effect of the technology recited in claim 1, after the grommet has been attached to the wire, the grommet attachment jig can be easily removed from the wire.

[0017] According to the technology recited in claim 3, in addition to the effect of the technology recited in claim 1, after the grommet has been attached to the wire, the grommet attachment jig can be easily removed from the wire.

[0018] According to the technology described in claim 4, in addition to the effects of the technology described in any one of claims 1 to 3, when attaching a grommet to a wire, the grommet attachment jig can be easily inserted into the grommet and easily removed from the wire, and damage to the grommet can also be prevented. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 2 is a front view showing components arranged coaxially in the first embodiment. [Figure 2] 2 is a cross-sectional view taken along line AA in FIG. 1 showing the grommet according to the first embodiment. [Figure 3] FIG. 3 is a front view showing the jig in the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line BB in FIG. 3 showing the jig according to the first embodiment. [Figure 5] 5A and 5B are front views showing one procedure of a method for attaching a grommet to a harness using a jig in the first embodiment. [Figure 6] 5A and 5B are front views showing one procedure of a method for attaching a grommet to a harness using a jig in the first embodiment. [Figure 7] 5A and 5B are front views showing one procedure of a method for attaching a grommet to a harness using a jig in the first embodiment. [Figure 8] 5A and 5B are front views showing one procedure of a method for attaching a grommet to a harness using a jig in the first embodiment. [Figure 9] FIG. 10 is a front view showing a jig according to a second embodiment. [Figure 10] 10 is a cross-sectional view taken along line CC in FIG. 9 showing the jig according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description will be given of an embodiment of a grommet installation jig with reference to the drawings.

[0021] First Embodiment First, a first embodiment will be described. In this embodiment, a grommet installation jig (hereinafter simply referred to as "jig") 3 used to install a grommet 2 having an assembly directionality to an integrally molded connector harness (hereinafter simply referred to as "harness") 1 will be described, as shown in Fig. 1. Fig. 1 is a front view showing the components 1 to 3 arranged coaxially.

[0022] 1, the harness 1 has a connector 11 at its base end and a plurality of electric wires 12 exposed at its tip end. Between the connector 11 and the exposed electric wires 12, the electric wires 12 are covered with a cover 13. This harness 1 corresponds to an example of the "wire" of the disclosed technology.

[0023] FIG. 2 shows a cross-sectional view of the grommet 2 taken along line AA in FIG. 1. This grommet 2 has an assembly directionality. Specifically, the grommet 2 is made of rubber and has an insertion hole 21 at its center. The insertion hole 21 is fully open on the left side in FIG. 2 in the axial direction, and a lip seal 22 is provided on the right side in FIG. 2 that is inclined outward, and the opening diameter is smaller than that on the left side. This grommet 2 has an assembly directionality in which the insertion direction of the jig 3 and harness 1 into the insertion hole 21 is limited to the direction of arrow X shown in FIG. 2 so as not to distort the shape of the lip seal 22. The opening diameter of the lip seal 22 is slightly smaller than the outer diameter of the harness 1.

[0024] FIG. 3 shows a front view of the jig 3. FIG. 4 shows a cross-sectional view of the jig 3 taken along line BB in FIG. 3. As shown in FIGS. 3 and 4, the jig 3 is made of an elastic rubber material and has a tubular shape. The jig 3 includes a jig body 32 having an insertion portion 31 extending in the axial direction through which the harness 1 is inserted, and a detachment means 33 for detaching the harness 1 from the insertion portion 31 in a direction intersecting the axial direction when the harness 1 is inserted through the insertion portion 31. In this embodiment, the detachment means 33 is a notch 41 formed along the axial direction of the jig body 32 and communicating with the insertion portion 31. As shown in FIG. 4, the jig body 32 has a C-shaped cross section, and the opening width Y of the notch 41 is smaller than the inner diameter of the insertion portion 31.

[0025] [How to attach grommets to a harness] Next, a method for attaching the grommet 2 to the harness 1 using the jig 3 will be described with reference to the front views of FIGS.

[0026] In step 1 shown in FIG. 5, the jig 3 is inserted into the insertion hole 21 of the grommet 2 from the side opposite to the side where the lip seal 22 is located, that is, from the left side to the right side in FIG.

[0027] Next, in step 2 shown in Figure 6, the tip side of the harness 1 (the side where the electric wire 12 is exposed) is inserted into the insertion portion 31 of the jig 3 from the right side to the left side in Figure 6 toward the side where the lip seal 22 of the insertion hole 21 of the grommet 2 is located, and is also passed through the insertion hole 21 of the grommet 2.

[0028] Next, in step 3 of FIG. 7, the jig 3 is further moved along the harness 1 in the same insertion direction as in step 1 (to the right in FIG. 6) until the grommet 2 is inserted.

[0029] 8, the jig 3 is moved downward from the harness 1 to separate the jig 3 from the harness 1. At this time, the harness 1 is passed through the notch 41 of the jig 3.

[0030] [About the function and effect of the grommet mounting jig] According to the configuration of the grommet installation jig 3 of this embodiment described above, the jig 3 is simply composed of a tubular jig body 32. To install the grommet 2 to the harness 1, first, the jig 3 is inserted into the insertion hole 21 of the grommet 2, which has a directional assembly direction, in a direction that satisfies the assembly direction (a direction that does not destroy the lip seal 22). Thereafter, the harness 1 is inserted into the insertion portion 31 of the jig 3, and then the jig 3 is moved further along the harness 1 in a direction that satisfies the assembly direction, thereby penetrating the grommet 2. Thereafter, the jig 3 is moved so as to remove the harness 1 from the insertion portion 31 in a direction intersecting the axial direction via the cutout portion 41. Therefore, using the jig 3 with a simple configuration, the grommet 2, which has a directional assembly direction, can be easily installed to the harness 1 without violating the assembly direction.

[0031] According to the configuration of this embodiment, the harness 1 can be removed from the insertion portion 31 via the cutout portion 41 simply by moving the jig 3 in a direction intersecting the axial direction of the jig 3. Therefore, after the grommet 2 is attached to the harness 1, the jig 3 can be easily removed from the harness 1.

[0032] According to the configuration of this embodiment, the jig body 32 has elasticity, which improves ease of insertion of the jig body 32 into the grommet 2, protection of the grommet 2, and removal from the harness 1. Therefore, when attaching the grommet 2 to the harness 1, the jig 3 can be easily inserted into the grommet 2 and easily removed from the harness 1, and in addition, damage to the grommet 2 can be prevented.

[0033] Second Embodiment Next, a second embodiment will be described. In the following description, the same components as those in the first embodiment will be denoted by the same reference numerals and explanations thereof will be omitted, and differences will be mainly described.

[0034] This embodiment differs from the first embodiment in the configuration of the detachment means 33 of the jig 3. Fig. 9 shows a front view of the jig 3. Fig. 10 shows a cross-sectional view of the jig 3 taken along line CC in Fig. 9. As shown in Figs. 9 and 10, the jig body 32 of the jig 3 in this embodiment is configured to be separable into two bodies, a first body 32A and a second body 32B, along its axis. Each of the bodies 32A, 32B has a dividing surface 42 formed along the axial direction of the jig body 32, which allows the jig body 32 to be divided into two. The dividing surface 42 constitutes the detachment means 33.

[0035] [How to attach grommets to a harness] Therefore, in this embodiment, the jig 3 and the harness 1 are inserted in the same steps 1 to 3 as described in the first embodiment. Then, in step 4, the jig main body 32 is separated at the dividing surface 42 into two main bodies 32A and 32B and detached from the harness 1.

[0036] [About the function and effect of the grommet mounting jig] According to the configuration of the grommet installation jig 3 of this embodiment described above, unlike the first embodiment, the harness 1 can be removed from the insertion portion 31 simply by moving the jig body 32 so that it is divided into two or more parts at the dividing surface 42. Therefore, after the grommet 2 is installed in the harness 1, the jig 3 can be easily removed from the harness 1.

[0037] The disclosed technology is not limited to the above-described embodiments, and can be implemented by appropriately modifying part of the configuration within the scope of the disclosed technology.

[0038] (1) In the above-described embodiments, the jig body 32 is made of a rubber material, which is an elastic material. However, it may be made of an elastic material other than rubber, or may be made of a metal material such as aluminum.

[0039] (2) In the above embodiments, the grommet 2 is attached to the harness 1 as a wire material. However, the wire material is not limited to a harness. [Industrial Applicability]

[0040] The disclosed technology can be used to attach grommets to wires. [Explanation of symbols]

[0041] 1 Harness (wire) 2 grommets 3 Jig 21 Insertion hole 31 Insertion part 32 Jig body 33 Means of Detachment 41 Cutout portion (detachment means) 42 Partition surface (separation means)

Claims

1. A grommet installation jig is used by being fitted into an insertion hole provided in a grommet having an assembly direction in order to install the grommet on a wire rod, a jig body having a tubular shape and an insertion portion extending in an axial direction through which the wire rod is inserted; a detachment means for detaching the wire rod from the insertion portion in a direction intersecting with the axial direction in a state where the wire rod is inserted into the insertion portion; A grommet installation jig comprising:

2. The grommet installation jig according to claim 1, The detachment means is a notch formed along the axial direction of the jig body and communicating with the insertion portion. A grommet installation jig characterized by:

3. The grommet installation jig according to claim 1, The detachment means is a dividing surface formed along the axial direction of the jig body, which can divide the jig body into at least two parts. A grommet installation jig characterized by:

4. The grommet installation jig according to any one of claims 1 to 3, The jig body is made of an elastic material. A grommet installation jig characterized by:

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