JPH10233131A - Grommet mounting jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assembled wiring for wire harness by one process on a wiring plate, by standingly providing fixed claws, juxtaposed toward the front on a pair of pole upper ends, on a pair of movable pieces, and protrudedly providing a pair of movable claws on the front of a pair of elevating pieces, guided by the poles to be movable vertically, to near, part, and elevate a pair of the movable pieces with each other. SOLUTION: A grommet mounting jig 1 inserts four expansion claw 2 into a grommet opening part, to expand/contract the electric wire insertion part of the grommet. Also the jig 1 is equipped with a pair of movable pieces 9 guided by a guide groove 8, on a fixed mount 7 to be fixed onto a writing plate for wire harness to near and separate with each other; fixed claws 11 juxtaposed toward the front at the upper ends of a pair of poles 10 standingly provided on the movable piece 9; a pair of elevating pieces 121 guided by the poles 10 and are movable vertically and impossible in turning; a cam mechanism 14 for nearing/parting a pair of movable claws 13 and the movable pieces 9 with each other; and a pantagraph mechanism 15 for elevating the elevating pieces 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a grommet mounting jig for inserting a wire harness into a grommet.

[0002]

2. Description of the Related Art Conventionally, various types of grommet mounting jigs are known. For example, those shown in FIGS. 7 to 10 are known. In the conventional grommet mounting jig 51 shown in FIG. 7, a table 53 is provided on a device storage box 52, and an expansion claw for expanding the wire insertion portion G1 of the grommet G is provided at the front end of the table 53 at the front. A protruding extension claw driving mechanism 55 is provided.

The extension claw driving mechanism 55 has a structure as shown in FIG. First, the extension claw 54 is provided with a fixed claw 57 provided at the upper end of the fixed plate 56 so as to protrude forward.
It comprises a left movable claw 60 and a right movable claw 61 provided on the left and right rotating plates 58 and 59, respectively, and an elevating claw 63 provided at the tip of a swing arm 62. Left and right rotating plate 5
8 and 59 are rotatably held by pin-shaped rotation shafts 64 and 65, respectively.

The swing arm 62 has a pin-shaped swing shaft 6.
6 are swingably held. And the left
The right rotating plates 58 and 59 and the swing arm 62 are rotatably connected to drive links 70, 71 and 72 by pins 67, 68 and 69, respectively. These drive links 70, 71, 72 are connected to drive pins (not shown) in the equipment storage box 52, and are driven up and down by a lifting device such as an air cylinder or an electric lifting mechanism. The lifting device is operated by a pedal 73, and electric power required for the lifting device is supplied from a plug 74.

In the grommet mounting jig 51 having the above-described structure, after the plug 74 is first connected, the electric wire insertion portion G1 of the grommet G is inserted from the front of the extension claw 54 and the pedal 73 is inserted.
And the lifting device is driven by the drive link 70 via the drive pin.
Since the 71 and 72 are pulled down, the extension claw 54 is moved to the position shown in FIG.
Is extended as shown in Then, the wire insertion portion G1 is expanded as shown in FIG. In front of the wire insertion portion G1 of the grommet G, a conical cylinder G2 and a panel engaging ring G3 having a peripheral groove for engaging with a panel hole of a dashboard or the like.
Are integrally connected, but each has an inner diameter equal to or larger than the inner diameter of the expanded wire insertion portion G1, so that the wire harness W can be easily inserted.

In order to assemble the wiring of the wire harness W using the grommet mounting jig 51 described above, FIG.
After attaching the U-shaped ring 43 at a required position on the wiring board P as shown in FIG. 0, wiring is performed by stretching the wire harness W, and exterior parts such as the protector 42 and the connector 41 are mounted at predetermined positions. At the same time, a tape winding or the like is performed, and an appearance finishing operation other than the grommet is performed on the wiring board P. The wired wire harness W is detached from the wiring board P together with the exterior parts, and the process proceeds to the next grommet G mounting step.

In the mounting step of the grommet G, after the wire harness W wired on the table 53 of the grommet mounting jig 51 is mounted, the wire insertion portion G1 of the grommet G is fitted to the extension claw 54, and the pedal 73 is depressed. Wire insertion part G
Expand 1 And the required connector 41
Through the pedal 7 at a predetermined position in the main part of the wire harness W
After the grommet G is closed by releasing the extension 3 and the extension claw 54 is pulled out, the extension claw 54 is opened again, and the wire harness W and the connector 41 that have passed therethrough are removed from the extension claw drive mechanism 55. If there are other places where the grommet G is mounted, the same operation is repeated to complete the assembly of the wiring harness W wiring.

[0008]

However, in the wiring process of the wire harness W using the above-mentioned conventional grommet mounting jig 51, there are two processes of a wiring process and a grommet mounting process. It is liable to occur, and there is a problem that the in-process state occurs between the two processes and the production efficiency is reduced.

Further, there is a problem that the grommet mounting jig 51 is expensive because it is large and requires a driving device. Further, in the grommet mounting step, there is an operation of inserting the connector 41 into the expanded electric wire insertion portion G1, but there is a problem that as the size of the connector becomes large, it becomes difficult to insert the connector 41 and the operation efficiency is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a small size which can be attached to a required portion of a wiring board with a fastening tool so that wiring assembly of a wiring harness can be performed in one step on the wiring board. An object of the present invention is to provide an inexpensive grommet mounting jig.

[0011]

The above objects of the present invention can be solved by the following items 1) to 5). 1) A grommet mounting jig which inserts a plurality of extension claws into a grommet opening to expand or contract a wire insertion portion of a grommet, on a fixing base fixed by a fastening tool on a wiring board for a wire harness. A pair of movable pieces that are guided toward and away from each other, fixed pawls arranged side by side at the upper ends of a pair of poles erected on the movable pieces, respectively, and vertically guided by the poles. A movable pair of movable members protruding in front of the movable member, an approaching / separating structure for moving the movable member toward and away from each other, and an elevating structure for moving the movable member up and down. Provided.

[0012] 2) In the grommet mounting jig according to the above item 1), the lifting structure comprises a lifting link connected to the lifting piece with a pin, and a lifting lever connected to the lifting link and the pole with a pin. Structure. 3) In the grommet mounting jig according to the above item 1), the approaching / separating structure is abutted on the inside of the pair of movable pieces, and is rotatable horizontally by a center pin erected at the center of the fixed base. This is a cam mechanism including an elliptical cylinder and a rotary lever connected to the elliptical cylinder.

4) In the grommet mounting jig according to the above item 3), small end faces are provided at both ends of the elliptic cylinder. 5) In the grommet mounting jig according to the above item 1), the approaching / separating structure is connected to a pin connected to the movable piece, is connected to the connecting link with a pin, and stands upright at a center of the fixed base. And a rotary link that can be rotated horizontally by a center pin, and a rotary lever connected to the rotary link.

According to the grommet mounting jig having the above structure,
A grommet mounting jig that expands or contracts the grommet's wire insertion part by inserting multiple extended claws consisting of fixed claws and movable claws into the grommet opening is fixed with a fastening tool on the wiring board for the wire harness The wiring harness, including the grommet, the connector, and the protector, can all be assembled on the wiring board because the wiring is fixed compactly on the fixed base. Therefore, the working efficiency is remarkably improved, and the cost is reduced because a large-sized grommet mounting jig and a power source are not required. Further, since the elevating structure for raising and lowering the movable claw with respect to the fixed claw is a pantograph mechanism, the movement is smooth, and the reliability and maintainability of the grommet mounting jig are improved.

Further, when the approaching / separating structure for moving the pair of fixed claws and movable claws toward and away from each other is a cam mechanism comprising an elliptical cylinder, and a small flat surface is provided at the tip of the elliptical cylinder, Since the small plane stabilizes the extended position when the movable claws are extended and separated from each other, the reliability is improved. Further, when the approach / separation structure is a toggle link mechanism combining links, when the fixed claw and the movable claw are extended and separated from each other, the links are aligned and the toggle mechanism operates, so that the extended position is further stabilized. . Further, the fixed claw and the movable claw can be made to approach each other without depending on the contraction force of the grommet even when approaching and contracting, so that the reliability of the grommet mounting jig can be further improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a grommet mounting jig according to the present invention will be described below in detail with reference to FIGS. FIG. 1 is a perspective view showing a first embodiment of a grommet mounting jig of the present invention, FIG. 2 is an operation explanatory view in FIG.
3 is an explanatory view of the operation of the approach / separation structure in FIG. 1, FIG. 4 is a plan view showing a modification of FIG. 3, and FIG. 5 is a view of the approach / separation structure of the second embodiment of the grommet mounting jig of the present invention. FIG. 6 is an operation explanatory view showing an operation state in which the grommet mounting jig in FIG. 1 is mounted on a wiring board.

As shown in FIGS. 1 to 3, the grommet mounting jig 1 of the first embodiment of the present invention inserts four extension claws 2 into the grommet opening 3 to insert the grommet G through the wire insertion portion G1. Can be expanded or contracted. The configuration of the grommet mounting jig 1 is such that the grommet mounting jig 1 is guided by a guide groove 8 on a fixing base 7 fixed on a wiring board P for a wire harness W by fixing bolts 5 and nuts 6 as fastening tools. It has a pair of movable pieces 9 approaching and separating from each other.

A pair of poles 10 erected on the movable piece 9 has fixed pawls 11 arranged side by side at the upper ends thereof. (Not shown) and the like, and a pair of lifting and lowering pieces 12 that cannot rotate. Also, a pair of movable claws 13 projecting forward of the lifting piece 12, a cam mechanism 14 as an approaching / separating structure for moving the movable piece 9 toward and away from each other,
Pantograph mechanism 15 as an elevating structure for elevating and lowering 2
And

More specifically, the pantograph mechanism 1
5 is a lifting link 17 connected to the lifting piece 12 by a pin 16
And a lifting lever 20 connected to the other end of the lifting link 17 by a pin 18 and rotatably connected to the pole 10 by a pin 19. Further, the cam mechanism 14 is in contact with the inside of the pair of movable pieces 9, and is connected to the elliptic cylinder 22 which can be rotated horizontally by a center pin 21 erected at the center of the fixed base 7. And a fixed rotating lever 23.

In the grommet mounting jig of the present embodiment having the above-described configuration, first, the fixing base 7 of the grommet mounting jig is mounted on the wiring board P for the wire harness W with the fixing bolts 5 and the nuts 6. After being attached to the predetermined position, the contracted expansion claw 2 is inserted through the grommet opening 3. When the rotary lever 23 is rotated in the direction of the arrow as shown in FIG. 3, the movable pieces 2 are separated from each other by the elliptical cylinder 22, so that the pair of fixed claws 11 and the movable claws 13 are mutually extended.

Further, when the lifting lever 20 is pushed up, the fixed pawl 11 and the movable pawl 1 are moved by the pantograph mechanism 15.
3, the wire insertion portion G1 of the grommet G has a substantially square inner diameter as shown in FIG. In addition, since the expanded wire insertion portion G1 tries to contract by elasticity, the rotating lever 23 is fixed to the fixed base 7.
The lift lever 20 is locked to the lift piece 12 by a lock mechanism (not shown).

In front of the wire insertion portion G1 of the grommet G, a trumpet-shaped conical cylinder G2 and a panel engaging ring G3 having a peripheral groove engaged with a panel hole of a dash board are integrally connected. Are equal to or larger than the inner diameter of the expanded wire insertion portion G1. Therefore, as shown in FIG. 6, the wiring harness W can be directly routed and wired on the wiring board P.

Therefore, since it is not necessary to insert the connector 41 into the expanded wire insertion portion G1, the wire harness W
When the wiring is completed, the lifting lever 20 is lowered and the rotating lever 2
3 is turned in the opposite direction to reduce the extension claw 2 so that the wire insertion portion G
Remove the extension claw 2 from 1 and place the protector 4
2 can be taken out or wrapped with a sealing tape, it can be taken out from the wiring board P and mounted on the body of an automobile or the like, or stocked on a component shelf. Therefore, not only the grommet mounting operation but also the efficiency of the assembling operation of the entire wire harness can be improved.

Next, a modification of the first embodiment will be described with reference to FIG. This modification is different from the first embodiment in that the small flat surfaces 24 are provided at both ends of the elliptical cylinder 25. Therefore, when the movable lever 9 is pushed and expanded by rotating the rotary lever 23 in one direction, the small flat surface 24 comes into flat contact with the side surface of the movable piece 9, so that there is a locking action. Therefore, a special lock mechanism between the rotation lever 23 and the fixed base 7 is not required. The other components and operations are the same as those in the first embodiment, and the description thereof will be omitted by retaining the same reference numerals.

Next, the second grommet mounting jig of the present invention will be described.
An embodiment will be described with reference to FIG. The present embodiment is different from the first embodiment in that the cam mechanism 14 as the approaching / separating structure is constituted by the toggle link mechanism 32. That is, the toggle link mechanism 32 of the present embodiment includes a connecting link 33 connected to the pole 10 as a pin on the movable piece 9, and a pin 34 connected to the connecting link 33.
And a rotation link 36 that can be horizontally rotated by a center pin 35 erected at the center of the fixed base 7,
It comprises a rotating lever 23 connected to the rotating link 36 and a stopper pin 37 erected on the bottom plate of the fixed base 7.

According to the toggle link mechanism 32, when the rotary lever 23 is turned 90 ° in the direction of the arrow in FIG.
Since the rotation link 36 is rotated by 90 ° as shown in FIG. 2B, the movable pieces 9 are separated from each other and the rotation link 36, the pin 34, the connection link 33, and the pole 10 are centered on the center pin 35. Aligned on a straight line. Therefore, even if a contraction force due to the elasticity of the wire insertion portion G1 of the grommet G acts, the grommet G is temporarily locked at this position. However, FIG.
Since the stopper pin 37 is provided at a position slightly away from the rotating link 36 as shown in FIG. 7, if the rotating link 36 is rotated until the stopper pin 37 comes into contact with the stopper pin 37, the toggle operation is clearly effective. As a result, the extended position of the extended claw 2 is stably held.

When the rotating lever 23 is rotated in the opposite direction to move the movable piece 9 closer as shown in FIG. 5A, the rotating link 36 and the connecting link 33 move the movable piece 9 inward. Since it is drawn, for example, the electric wire insertion portion G1 can exert a reducing force on the movable claw 2 expanded by the elasticity above the pole 10. Therefore, the movable piece 9 is
The movable piece 9 can be reliably pulled closer to the jig even if it is locked by competing with the grommet, and the reliability of the grommet mounting jig can be further improved.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes. For example, in FIGS. 3B and 4, the elliptic cylinders 22 and 25 are
The mounting relationship between the elliptical cylinders 22 and 25 and the rotation lever 23 may be changed in order to secure the locking action by being positioned in line with 10. Further, the fastening tool of the fixing base 7 is composed of the fixing bolts 5 and the nuts 6. However, it is also possible to attach an ON / OFF-free magnet to the bottom of the fixing base 7 so as to be attracted to the iron switchboard P. it can.

[0029]

As described above, according to the grommet mounting jig of the present invention, a pair of guides which are guided on a fixing table fixed on a wiring board for a wire harness by a fastening tool and approached and separated from each other. A movable piece, fixed pawls arranged side by side at the upper ends of a pair of poles erected on the movable piece, a pair of elevating pieces movable up and down guided by the poles, , A pair of movable claws projecting forward of the movable member, an approaching / separating structure for moving the movable pieces toward and away from each other, and an elevating structure for elevating the elevating pieces. Therefore, a grommet mounting jig for expanding or contracting the wire insertion portion of the grommet by inserting a plurality of extension claws including the fixed claw and the movable claw into the grommet opening is provided on the wiring board for the wire harness. And is fixed compactly on the fixed base fixed by the. Therefore, all wiring of the wire harness, including the grommet, connector and protector, can be assembled on the wiring board, significantly improving the work efficiency of grommet mounting and eliminating the need for a large grommet mounting jig and power source. Therefore, cost can be reduced.

Further, the lifting structure is a pantograph structure comprising a lifting link pin-connected to a lifting piece and a lifting lever pin-connected to the lifting link and a pole. Therefore, if the elevating structure for raising and lowering the movable claw with respect to the fixed claw is a pantograph mechanism, the movement is smooth, and a grommet mounting jig with higher reliability and maintainability can be obtained.

The approaching / separating structure is abutted on the inside of the pair of movable pieces, and is connected to the elliptic cylinder which is rotatable horizontally by a center pin erected at the center of the fixed base. A cam mechanism including a rotary lever, and small flat surfaces are provided at both ends of the elliptical cylinder. Therefore, if the approach / separation structure for moving the pair of fixed claws and movable claws toward and away from each other is a cam mechanism made of an elliptical cylinder, and a small flat surface is provided at the tip of the elliptical cylinder, the fixed claws and the movable claws become When extended away, the extended position can be stabilized by the small plane. Therefore, a more reliable grommet mounting jig can be obtained.

Further, a rotating link that is horizontally connected to a connecting link in which the approaching / separating structure is pin-connected to the movable piece and a center pin that is pin-connected to the connecting link and is erected at the center of the fixed base. And a rotating link connected to the rotating link.
Accordingly, when the fixed claw and the movable claw are extended and separated, the links are aligned and the toggle mechanism operates, so that the extended position is further stabilized. Also, at the time of approach / reduction, the fixed claw and the movable claw can be made to approach each other without relying on the contraction force of the grommet. Therefore, the reliability of the grommet mounting jig can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a grommet mounting jig according to the present invention.

FIG. 2 is an operation explanatory diagram in FIG.

FIG. 3 is an operation explanatory view of the approach / separation structure in FIG. 1;

FIG. 4 is a plan view showing a modification of FIG.

FIG. 5 is an operation explanatory view showing an approach / separation structure of a grommet mounting jig according to a second embodiment of the present invention.

FIG. 6 is an operation explanatory view in which the grommet mounting jig in FIG. 1 is mounted on a wiring board.

FIG. 7 is a perspective view showing an example of a conventional grommet mounting jig.

8 is an operation explanatory view of the extension claw driving mechanism in FIG. 7;

FIG. 9 is a perspective view showing a state where an electric wire insertion portion of the grommet in FIG. 7 is expanded.

FIG. 10 is a perspective view showing a wiring state of a wire harness on a wiring board.

[Explanation of symbols]

 1, 31 Grommet mounting jig 2 Expansion claw 3 Grommet opening 5 Fixing bolt (fastening tool) 6 Nut (fastening tool) 7 Fixed base 9 Movable piece 10 Pole 11 Fixed claw 12 Elevating piece 13 Movable piece 14 Cam mechanism (approaching) 15 Pantograph mechanism (elevating structure) 17 Elevating link 20 Elevating lever 21, 35 Center pin 22, 25 Elliptic cylinder 23 Rotating lever 24 Small plane 32 Toggle link mechanism (approaching / separating structure) 33 Connecting link 36 Rotating link 37 Stopper pin G Grommet G1 Wire insertion part P Wiring board W Wire harness

Claims (5)

[Claims] A grommet mounting jig for expanding or contracting a wire insertion portion of a grommet by inserting a plurality of extension claws into an opening of a grommet, wherein the jig is fixed on a wiring board for a wire harness by a fastening tool. A pair of movable pieces guided on a fixed base and approaching and moving away from each other, fixed claws arranged side by side at the upper ends of a pair of poles erected on the movable pieces, and guided by the poles A pair of movable pieces that can be moved up and down, a pair of movable claws projecting in front of the movable piece, an approaching / separating structure for moving the movable pieces toward and away from each other, and moving the movable piece up and down A grommet mounting jig, comprising: 2. A pantograph mechanism comprising a lifting link pin-connected to said lifting piece and a lifting lever pin-connected to said pole and said pole. The grommet mounting jig described. 3. An elliptical cylinder in which the approaching / separating structure is in contact with the inside of the pair of movable pieces and is rotatable horizontally by a center pin erected at the center of the fixed base. 2. The grommet mounting jig according to claim 1, wherein said jig is a cam mechanism comprising a connected rotary lever. 4. The grommet mounting jig according to claim 3, wherein a small flat surface is provided at both ends of said elliptic cylinder. 5. The approach / separation structure is horizontally connected by a connecting link pin-connected to the pair of movable pieces, and a center pin connected to the connecting link by a pin and erected at the center of the fixed base. The grommet mounting jig according to claim 1, wherein the jig is a toggle link mechanism including a rotatable rotation link and a rotation lever connected to the rotation link.