JP3129229B2 - Temporary wire insertion device for grommet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

Relates wire temporary insertion device into the invention grommet BACKGROUND OF THE INVENTION, in particular, a covered wire for the O ₂ sensor,
The present invention relates to a device for temporarily inserting an electric wire into a grommet to be temporarily inserted into a grommet which is an assembly part therewith.

[0002]

2. Description of the Related Art Generally, a grommet is a component provided between a plurality of covered electric wires and an exterior component thereof. The grommet has a through hole for each covered electric wire, and has a type in which the covered electric wire is inserted into the through hole during assembly. There are many. When inserting a covered electric wire into a grommet, it is required from a viewpoint of workability to simultaneously insert a plurality of covered electric wires into the insertion holes of the grommet.

Accordingly, the applicant of the present application has previously filed Japanese Utility Model Application No. 5-26.
No. 344 (Japanese Utility Model Laid-Open No. 6-88127) proposes an insertion device capable of simultaneously inserting a corresponding electric wire into a plurality of insertion holes formed in a grommet. In this configuration, a grommet holding portion for holding the grommet and an electric wire clamp portion for clamping the covered electric wire inserted into the insertion hole of the held grommet are provided so as to be relatively displaceable with each other. And in the prior art, by clamping the covered electric wire in a state where the tip is protruded in advance, by bringing the grommet held by the grommet holding portion close to each other,
The coated electric wire is temporarily inserted at the same time, and furthermore, is permanently inserted.

[0004]

SUMMARY OF THE INVENTION
Due to the characteristics of the product, it is essential to prevent bending and buckling and to securely insert it temporarily into a proper insertion hole. However, as in the prior art described above, the temporary insertion is performed exclusively by protruding the end of the covered electric wire so as to face the grommet and bringing the grommet and the covered electric wire close to each other, so that the insertion of the covered electric wire with the grommet is performed. When the resistance is large or the arrangement of the insertion holes extends in multiple stages, precise positioning cannot be performed easily and quickly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide an apparatus for temporarily inserting a wire into a grommet, which can easily and quickly insert a covered wire into a grommet.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a grommet for temporarily inserting a covered electric wire to be temporarily inserted into a grommet defining a plurality of insertion holes. A grommet holding portion that positions the grommet insertion hole in an open state, and a wire positioning portion that positions the insulated wire corresponding to the insertion hole in the grommet insertion hole positioned in the grommet holding portion so that the covered wire can be temporarily inserted. And a device for temporarily inserting a wire into the grommet, wherein the wire positioning portion is opened upward, an alignment groove for aligning a plurality of coated wires in two rows, and an advanceable and retractable direction intersecting the alignment groove. Between the partitioning posture provided for partitioning the covered electric wire introduced into each alignment groove and the open posture for opening the partitioned covered electric wire so that it can be taken out of the alignment groove. That it contains a displaceable partition unit is wire temporary insertion device into grommets characterized by.

In the invention including the specific matter, first, the grommet is positioned on the grommet holding portion,
The grommet is positioned with its insertion hole opened. Then, the corresponding covered electric wire is positioned in the electric wire positioning portion for each insertion hole of the grommet. In this state, the operator can simultaneously insert a plurality of covered electric wires simultaneously by inserting each covered electric wire toward the insertion hole. At this time, since the wire positioning portion sorts the plurality of covered wires by the alignment groove and the partition portion,
Even when the arrangement of the insertion holes is complicated, the positioning of the coated electric wire can be performed easily and quickly.

In a preferred aspect of the present invention, the alignment groove is fixed to a grommet holding portion, and is formed in a fixed-side partition plate along a plane orthogonal to an insertion hole of the held grommet. The partition portion is formed on a movable partition plate that is disposed in parallel with the partition plate and that can be displaced relative to the partition plate. In the invention including this specific matter, since the insulated wire is positioned by the partition plate arranged on a plane orthogonal to the grommet insertion hole held by the grommet holding portion, the wire positioning portion is positioned in the direction along the insertion hole. Dimensions can be set as short as possible.

In another aspect of the present invention, the grommet holding portion opens the grommet from the wire positioning portion in a direction in which the grommet faces the insulated wire positioned in the wire positioning portion and in a direction in which the grommet can be easily attached and detached. It is configured to be able to be displaced to an open posture. In the invention including this specific matter, the grommet holding portion can be displaced to the open position when the grommet is attached / detached, and can be displaced to the opposite position when the insulated wire is temporarily inserted, so that the grommet holding portion can be used.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A preferred embodiment of the present invention will be described in detail. First,
With reference to FIG. 6 and FIG. 7, the covered electric wire and the grommet which are the objects in this embodiment will be described.

FIG. 6 is a schematic front view showing a signal line for an O ₂ sensor as an example of a covered electric wire, and FIG. 7 is a perspective view of a grommet through which the covered electric wire of FIG. 6 is inserted. First, FIG.
Referring to FIG. ₂ , the insulated wire illustrated in the figure constitutes a signal line W for an O ₂ sensor. This signal line W
Is formed of a polyfluorinated ethylene resin from the viewpoint of heat resistance, and protrudes from the end of the glass varnish tube 2.
The coating 3 is formed in a so-called half-strip state in which the coating 3 is cut in the vicinity of the distal end and is not completely removed. On the other hand, the base end of the covered electric wire 1 is connected to the connector C, and the displacement of the base end of the glass varnish tube 2 covering the covered electric wire 1 is regulated by the connector C. In the illustrated embodiment,
A metal protective outer cylinder R is mounted on the outer periphery of the glass varnish tube 2.

As shown in FIG. 7, the grommet 5 into which the covered electric wire 1 of the signal line W is inserted defines an insertion hole 6 specified for each covered electric wire 1. A plurality of the through holes 6 are formed along the axial direction of the grommet 5 formed in a substantially cylindrical shape, and each of the through holes 6 is assigned the covered electric wire 1 to be inserted into the through hole. This grommet 5 has a small diameter D of about 20 mm,
The main body 5A, a resin ring 5B detachably fitted to the main body 5A, and a separate part 5C detachably provided to the resin ring 5B are of a split type. The formed insertion hole 6 has a considerably smaller diameter than the portions formed in the main body portion 5A and the resin ring portion 5B.

FIG. 1 is an external perspective view of an apparatus 10 for temporarily inserting electric wires into a grommet according to one embodiment of the present invention, and FIG. 2 is an exploded perspective partial view showing a main part of FIG. With reference to these drawings, the wire temporary insertion device 10 into the grommet in the illustrated embodiment includes a base 11, a grommet holding portion 12 provided on the base 11, and a grommet holding portion 12 facing the grommet holding portion 12. The electric wire positioning portion 13 fixed on the base 11 is a main element.

The base 11 is a plate made of metal or resin, which is partially cut out in a rectangular shape and formed in a substantially L-shape in plan view. The grommet holding portion 12 is attached to the cut-out side surface of the base 11 with the side surfaces flush with each other. The grommet holding part 12
Is a substantially block-shaped resin molded product, and the upper surface thereof defines an arc-shaped seating surface 14 for seating the grommet 5 to be positioned. Seating surface 14
Has one end side continuously open to the end face 12A of the grommet holding portion 12, and the other end defining an end wall 12B abutting on the end face of the grommet 5. A positioning projection 16 is provided on the end wall 12B so that the grommet 5 can be positioned in a non-rotatable state by inserting the positioning projection 16 into a specific insertion hole 6 of the grommet 5. Has become possible.

In the illustrated embodiment, the grommet holding portion 12 is opposed to the covered electric wire 1 positioned by the electric wire positioning portion 13 described later (the position indicated by the solid line in FIG. 1), and the grommet 5 is easily attached and detached. The grommet 5 is configured to be displaceable in the direction to an open position in which the grommet 5 is opened from the wire positioning portion 12. Next, the electric wire positioning unit 13
The grommet holding part 12 is attached to the base 11
And two alignment grooves 18 are formed on the upper surface thereof. Each of the alignment grooves 18 is open in parallel in a direction facing the upper side and the grommet holding portion 12.
Further, the opening width L1 of each alignment groove 18 is the same as that of the covered electric wire 1.
Is set to a size necessary and sufficient for detachably positioning the grommet 5. It is positioned so that it can be temporarily inserted into the hole 6.

As best shown in FIG. 2, the wire positioning portion 1
3 has a mounting hole 19 communicating with both alignment grooves 18.
Are formed. The mounting hole 19 is provided with a movable partition 20 for partitioning the covered electric wire 1 introduced into each of the alignment grooves 18. 3A and 3B show a configuration in a partitioning posture of a movable partition provided in the device for temporarily inserting an electric wire into the grommet in FIG. 1, wherein FIG. 3A is a schematic cross-sectional view, and FIG. . FIG. 4 shows the configuration of the movable partition provided in the device for temporarily inserting electric wires into the grommet shown in FIG. 1 in an open position,
(A) is a schematic cross-sectional view, (B) is a partially broken front view.

Referring to FIG. 2, FIG. 3 and FIG. 4, the movable partition portion 20 is formed substantially bifurcated to form a pair of leg portions 21.
Are formed in a substantially U-shape in plan view, and each leg portion 21 is further formed with a partition groove 22 that opens in the horizontal direction and the tip direction. The partition groove 22 is set to have the same size as the opening width L1 of the alignment groove 18, so that only one covered electric wire 1 introduced into each alignment groove 18 can be introduced.

On the other hand, the mounting hole 19 for mounting the movable partition 20 is formed in a substantially U-shape in plan view corresponding to the contour of each leg 21 and the root 23 connecting the legs 21, 21. And one insulated wire 1 is partitioned between the bottom of the alignment groove 18 and the lower surface of the leg 21 so that only one insulated wire 1 can be introduced into the partition groove 22 formed in the leg 21. It is set to a suitable vertical height. As a result, as shown in FIGS. 3A and 3B, both legs 21, 21
Is a partitioning posture for partitioning the covered electric wire 1 introduced into the alignment groove 18, and an opening posture for opening the partitioned covered electric wire 1 so as to be able to be taken out from the alignment groove 18 as shown in FIGS. It is configured to be displaceable between Note that, in the illustrated embodiment, the movable partition portion 20 is
In order to prevent detachment from the
A screw 24 is screwed into the side wall of the screw 2.
A part of the washer 25 jointly fastened by 4 is opposed to the rear surface of the root portion 23 of the movable partition portion 20 (the surface opposite to the direction in which the leg portions 21 project).

Next, referring to FIG. 2, in order to displace the movable partition 20 as described above between the partitioning position and the open position, the base portion 23 of the movable partition 20 is provided with respective legs. 21, a projecting rod 2 having a rectangular cross section projecting to the opposite side to 21
6 are integrally formed, and at the end of the protruding rod 26,
A circular handle 27 is fixed by being press-fitted into a bottomed mounting hole 28 formed at the center thereof.

In the illustrated embodiment, the projecting rod 2
A compression coil spring 29 is arranged on the outer periphery of 6.
It is contracted between the handle 27 and the electric wire positioning portion 13. As a result, the movable partition section 20 is always urged to the open position. Next, the operation of the above-described embodiment will be described with reference to FIGS. FIG. 5 is a schematic plan view showing a use state of the wire temporary insertion device 10 to the grommet in the embodiment of FIG.

First, referring to FIG. 1, the grommet 5 is
Attached to the grommet holding section 11. In this work, the grommet 5 is mounted after the grommet holding part 12 in the illustrated opposite posture is displaced to the open posture. When the grommet 5 is mounted, the specific insertion hole 6 of the grommet 5 is inserted into the positioning projection 16 of the grommet holding portion 12, and the grommet 5 is seated on the seating surface 14 to be stopped. Thereby, each insertion hole 6 of the grommet 5 is opposed to the corresponding alignment groove 18 arranged vertically. After that, the grommet 5 is returned to the facing position so that the held grommet 5 is
Position.

Next, each covered electric wire 1 of the signal line W is introduced into the alignment groove 18 corresponding thereto, and the covered electric wire 1 is sorted into two groups of electric wires. At this time, since the movable partition portion 20 is urged to the open position (see FIGS. 4A and 4B) by the compression coil spring 29, the insulated wire 1 responds smoothly without receiving any resistance. Into the alignment groove 18.

Thereafter, the handle 27 is pushed in, and the movable partition portion 20 is pressed against the urging force of the compression coil spring 29.
From the open position to the partition position (see FIGS. 3A and 3B)
, Each of the covered electric wires 1
It is positioned so as to be relatively displaceable only in the axial direction in the space defined by the alignment groove 18 and the movable partition 20. In this state, as shown in FIG. 5, when the operator pushes the insulated wire 1 toward the grommet 5, it is possible to simultaneously insert the insulated wire 1 into the grommet 5 simultaneously. When the temporary insertion of the insulated wire 1 is completed, the handle 27 is released and the movable partition 20 is displaced to the open position, so that each insulated wire 1 temporarily inserted into the grommet 5 is smoothly separated from the alignment groove 18. The grommet 5 can be taken out.

As described above, in the above-described embodiment, the operator inserts a plurality of covered electric wires 1 simultaneously into the insertion holes 6 into the grommet 5 positioned on the grommet holding portion 12 and temporarily inserts the coated electric wires 1 into the insertion holes 6. So you can
There is a remarkable effect that the temporary insertion work of the insulated wire 1 which has been difficult in the past can be easily and quickly performed. In particular, since the alignment groove 18 for aligning the coated electric wires 1 and the movable partitioning section 20 for partitioning the coated electric wire 1 in the alignment grooves 18 are provided, there is an advantage that the workability is improved.

In the illustrated embodiment, the grommet holding portion 12 is moved by the hinge 17 with a spring.
The grommet 5 is configured to be able to be displaced to an open position in which the grommet 5 is opened from the electric wire partitioning portion 13, so that there is an advantage that workability is further improved. next,
Another embodiment of the present invention will be described with reference to FIGS. 8 and 9 are perspective views showing a main part of another embodiment of the present invention.

Referring to these figures, the grommet holding portion 30 shown in the figure includes a substantially rectangular block body 31, a cover member 32 for opening and closing the upper surface of the block body 31, and a cover member 32 attached to the block body 31. And a hinge 33 with a spring to be attached. The block main body 31 has a semicircular stepped groove 34 on the upper surface of which the grommet 5 can be placed with the center line extending along the direction of insertion of the covered electric wire 1. The stepped groove 34 is formed in a shape in which both ends are recessed with a small diameter, and the shoulder portion places the grommet 5 in a state where movement in the center line direction is restricted. The stepped groove 34 has both ends opened along the insertion direction of the covered electric wire 1, and the insertion hole 6 of the grommet 5 placed in the stepped groove 34 is inserted along the insertion direction of the covered electric wire 1. It is set so that it can be opened.

The cover member 32 is attached to the block main body 31 by the hinge 33 so as to be rotatable around an axis along the insertion direction of the covered electric wire 1. When the cover member 32 closes the upper surface of the block body 31, an anti-circular stepped groove 35 corresponding to the stepped groove 34 is formed at a portion facing the stepped groove 34. Further, in the illustrated embodiment, a protrusion 36 is formed on a surface of the cover member 32 facing the upper surface of the block main body 31, and a concave portion 37 for receiving the protrusion 36 is formed on the block main body 31. By providing a well-known ball plunger 38 exposed in the concave portion 37 in the block body 31, when the cover member 32 closes the block body 31, the ball plunger 38 is engaged with the projection 36, so that the cover member 32 can be restricted.

The spring-loaded hinge 33 urges the cover member 32 in the clockwise direction in the drawing by the urging force. As a result, the cover member 32 is normally in a posture in which the block main body 31 is closed as shown in the figure. On the other hand, the stopping force of the ball plunger 38 is set so that the cover member 32 can maintain the closed posture. Also,
The stepped grooves 34 and 35 formed in the block body 31 and the cover member 32 are set to dimensions that can be tightened so as to restrict circumferential displacement of the grommet 5 when the cover member 32 is closed.

In the illustrated embodiment, the grommet holding section 30 is provided with an electric wire positioning section 50. As shown in FIG. 2, the wire positioning portion 50 includes a fixed-side partition plate 51 fixed to an end surface of the grommet holding portion 30 facing the wire clamp 20, and a pin 5 on the end surface.
2 and a pair of movable-side partition plates 53 rotatably mounted by the two.

In the partition plate 51 on this side, two wire guide slits 54 are formed as alignment grooves corresponding to the insertion holes 6 of the grommet 5 held by the grommet holding portion 30. The electric wire guide slits 54 extend vertically in parallel with each other and open upward. The two electric wire guide slits 54 allow the plurality of covered electric wires 1 to be sorted left and right in correspondence with the respective insertion holes.

On the other hand, the partition plate 53 on the movable side is symmetrically arranged on the end face, and the base end side is rotatably supported by the above-mentioned pin 52 about the axis along the insertion direction of the insulated wire 1. The end side is provided so as to be able to open and close the wire guide slit 54. And each partition plate 53, 53
Are formed on the free end side of the wire, two covered wire guide slits 56 that open to the respective opposite sides are formed. The electric wire 1 can be positioned in the insertion hole 6 of the grommet 5 held by the grommet holding portion 30.

In the illustrated embodiment, a compression coil spring 57 is provided between one partition plate 53 and the other partition plate 53, and the free end of each partition plate 53 is normally fixed to the fixed side. The electric wire guide slit 54 of the partition plate 51 is urged to open. 8 and 9 described above, each insertion hole 6 of the grommet 5 is opposed to the corresponding electric wire guide slit 54 of the fixed partition plate 51 (see FIG. 8), and the cover member 32 is closed. (See FIG. 9). Thus, the grommet 5 is held by the grommet holding portion 30 in a state where the displacement is restricted in both the circumferential direction and the axial direction.

On the other hand, each coated electric wire 1 of the signal line W is divided into right and left in an electric wire guide slit 54 formed in a partition plate 51 on the fixed side of the electric wire positioning portion 50, and one of the hands is arranged as shown in FIG. By closing the movable partitioning plate 53 at the above step, it can be further vertically sorted. Thereby, each covered electric wire 1 is positioned corresponding to the pitch of each insertion hole 6 formed in the grommet 5, and is positioned so that it can be inserted into the insertion hole 6 into which each is inserted.

The grommet 5 in the grommet holding portion 30 is gripped while holding the signal line W little by little.
, The covered wire 1 can be temporarily inserted. In this embodiment, the partition plates 51, 53
In addition, the positioning of the plurality of insulated wires 1 becomes easy and quick, and the dimension of the wire positioning portion 50 in the longitudinal direction of the wire insertion portion 6 can be set as short as possible. There is an advantage in that it is easy to attach the main insertion mechanism after the temporary insertion as described in the technical section. In addition, since the fixed-side partition plate 51 is fixed to the grommet holding portion 30, the distal end portion of the covered electric wire 1 can be positioned in the vicinity of the grommet 5.
Positioning accuracy is further improved.

The above embodiments are merely examples of preferred specific examples of the present invention, and the present invention is not limited to the above embodiments. It goes without saying that various design changes are possible within the scope of the claims of the present invention.

[0036]

As described above, according to the present invention, when simultaneously inserting an insulated wire into the grommet held by the grommet holding portion, when the insertion resistance of the insulated wire is large, or when the arrangement of the insertion holes is reduced. Even in the case of multiple stages, there is a remarkable effect that precise positioning can be performed easily and quickly.

In particular, when the covered electric wires are partitioned by fixed and movable partitioning plates arranged on a plane parallel to the insertion holes, the positioning of the plurality of covered electric wires becomes easy and quick, and the insertion holes are made easier. In this case, the dimension of the wire positioning portion can be set as short as possible in the direction along the line, so that it is easy to attach the main insertion mechanism after the temporary insertion.

Further, when the grommet holding portion is configured to be displaceable, the grommet holding portion is displaced to the open position when the grommet is attached / detached, and is displaced to the opposite position when the insulated wire is temporarily inserted. Can be used, so that workability is further improved.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a device for temporarily inserting a wire into a grommet according to an embodiment of the present invention;

FIG. 2 is an exploded perspective partial view showing a main part of FIG. 1;

3A and 3B show a configuration in a partitioning posture of a movable partition provided in a device for temporarily inserting an electric wire into the grommet shown in FIG. 1; FIG. 3A is a schematic cross-sectional view, and FIG. is there.

4A and 4B show a configuration of the movable partition provided in the device for temporarily inserting electric wires into the grommet shown in FIG. 1 in an open posture, wherein FIG. 4A is a schematic cross-sectional view, and FIG. is there.

FIG. 5 is a schematic plan view showing a use state of the electric wire temporary insertion device into the grommet in the embodiment of FIG. 1;

FIG. 6 is a perspective view of a general O ₂ sensor signal line.

FIG. 7 is a perspective view of a grommet which is an assembly part of the signal line of FIG. 6;

FIG. 8 is a perspective view showing a main part of another embodiment of the present invention.

FIG. 9 is a perspective view showing a main part of another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulated wire 5 Grommet 6 Insertion hole 10 Temporary insertion device 12 Grommet holding part 13 Wire positioning part 20 Movable partition part 26 Projection rod (main part of drive member) 27 Handle part (main part of drive member) 29 Compression coil spring 30 Grommet Holder 50 Wire positioning unit 51 Fixed partition plate 53 Movable partition plate

Claims (3)

(57) [Claims] 1. A grommet holding position of a grommet in a state where an insertion hole of the grommet is opened in order to temporarily insert a covered electric wire to be temporarily inserted into the grommet defining a plurality of insertion holes. A wire temporary insertion device for a grommet, comprising: a portion; and a wire positioning portion for temporarily positioning a covered wire corresponding to the insertion hole in a grommet insertion hole positioned in the grommet holding portion. The above-mentioned wire positioning part is opened upward, is provided with an alignment groove for aligning a plurality of coated wires in two rows, and is provided so as to be able to advance and retreat in a direction intersecting with the alignment groove, and partitions the coated wire introduced into each alignment groove. A partitioning part which can be displaced between a partitioning posture and an opening posture for opening the partitioning covered wire so that it can be taken out from the alignment groove. That wire temporary insertion device to the grommet. 2. An apparatus for temporarily inserting electric wires into a grommet according to claim 1, wherein said alignment groove is fixed to a grommet holding portion, and is fixed to a partition plate on a fixed side along a plane orthogonal to an insertion hole of the held grommet. While being formed, the partition part,
A device for temporarily inserting electric wires into a grommet, which is arranged in parallel with a partition plate and is formed on a movable partition plate that can be displaced relative to the partition plate. 3. The device for temporarily inserting a grommet into a grommet according to claim 1, wherein the grommet holding portion has a facing posture in which the grommet faces a covered electric wire positioned in the wire positioning portion, and the grommet is easily detachable. A device for temporarily inserting an electric wire into a grommet configured to be displaceable to an open position in which a grommet is opened from an electric wire positioning portion in a direction.