JPH11185846A - Earth terminal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earth terminal fitting that can solve such a problem that the coating of a body is damaged by a lock claw part. SOLUTION: In an earth terminal fitting 20 having a lock claw part 4 to be inserted into a hole 10 of a body so as to stop rotation at the time of tightening a bolt, a means to dull the edge of the lock claw part 4 that comes in contact with the marginal part of the hole 10 is formed, that is, a soft coating layer 21 to cover the lock claw part 4 is formed on the lock claw part 4 as an edge dulling means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground terminal fitting fastened to a vehicle body or the like with a single bolt, and more particularly to an earthing terminal provided with a detent claw at the end of a board when fastening a bolt. Related to terminal fittings.

[0002]

2. Description of the Related Art Terminal fittings of this type are disclosed in
No. 669, Japanese Utility Model Laid-Open No. 6-60061, etc., are widely known, and FIG. 10 shows an example.

The terminal fitting 1 is provided with a detent claw 4 which is bent downward in an L-shape at the tip of a substrate 2 having a bolt hole 3. The detent claw 4 is formed by bending a narrow strip left uncut by pressing into an L-shape, and thus has edges 5 at four corners of a rectangular cross section.

When the terminal fitting 1 is fixed to a vehicle body (counterpart member) 8, an air impact wrench is inserted through a bolt through hole 3 while a detent claw 4 is inserted into a locking hole 10 of the body 8. Tighten the bolt (or nut) with a tool such as. At this time, since the detent claw portion 4 is locked in the locking hole 10 of the body 8, the terminal fitting 1 is prevented from rotating together with the bolt (or nut).
Is stopped.

[0005]

When stopping the rotation, the detent claw 4 interferes with the peripheral edge of the locking hole 10, but the edge 5 of the detent claw 4 is locked by the locking hole. 1
In this case, the coating on the periphery 11 of the interference portion on the side of the body 8 may be damaged and rust may occur. In particular, the ground terminal is used for inspection of completed vehicles, etc.
Since it is often located relatively easily visible from the outside, the occurrence of rust may have reduced the commercial value of the car.

The present invention has been made in view of the above circumstances, and has as its object to provide a ground terminal fitting capable of solving the problem of the body coating being damaged by the detent claw.

[0007]

According to a first aspect of the present invention, there is provided an earth terminal having a detent claw inserted into a locking hole of a mating member for detent during bolt fastening. The detent pawl is provided with a means for dulling an edge of the detent pawl that hits the peripheral edge of the locking hole.

In this terminal fitting, since the edge of the detent claw portion is dulled by the dulling means, the paint on the body side is not damaged when it interferes with the peripheral edge of the locking hole.

According to a second aspect of the present invention, there is provided the ground terminal according to the first aspect, wherein a soft coating layer for covering the detent claw is provided as the edge dulling means.

In this terminal fitting, the edge is hidden (corresponding to the dulling of the edge) by covering the detent claw portion with the coating layer, so that direct interference between the edge and the peripheral edge portion of the locking hole is eliminated. The paint on the body side will not be damaged. When the coating layer extends to the tip of the detent claw, the coating around the detent hole is performed during the process of inserting the detent claw into the detent hole (the process of the detent claw searching for the detent hole). Will not hurt.

According to a third aspect of the present invention, there is provided the ground terminal fitting according to the first aspect, wherein a soft tube externally fitted to the detent claw portion is provided as the edge blunting means.

[0012] In this terminal fitting, the edge is hidden (corresponding to dulling of the edge) by covering the detent claw portion with the soft tube, so that direct interference between the edge and the peripheral edge portion of the locking hole is eliminated. The paint on the body side will not be damaged.
When the soft tube is hidden up to the tip of the detent claw, the vicinity of the detent hole is inserted in the process of inserting the detent claw into the detent hole (the process of the detent claw searching for the detent hole). The paint will not be damaged.

According to a fourth aspect of the present invention, there is provided the ground terminal according to the third aspect, wherein a heat-shrinkable tube is used as the soft tube.

In this terminal fitting, since the heat-shrinkable tube is used as the soft tube, the heat-shrinkable tube is fitted to the detent claw portion, and only the hot air is applied thereto. Can be.

According to a fifth aspect of the present invention, there is provided the ground terminal fitting according to the first aspect, wherein a curved piece is continuously provided on a side edge of the detent claw as the means for dulling the edge. I do.

In this terminal fitting, the curved outer surface of the curved piece is directed outward instead of the edge by providing the curved piece continuously to the side edge of the detent claw portion. Therefore, not the edge but the curved surface interferes with the peripheral portion of the locking hole, and the paint on the body side is not damaged.

According to a sixth aspect of the present invention, there is provided the earthing terminal according to the first aspect, wherein a side edge portion of the detent claw portion is subjected to end surface rounding as the means for dulling the edge. I do.

In this terminal fitting, the side edge of the detent claw is rounded by rounding the end face, so that the edge is dulled.
The paint on the body side will not be damaged when it interferes with the periphery of the locking hole.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a ground terminal 2 according to the first embodiment.
Indicates 0. This grounding terminal fitting 20 is integrally provided with a detent claw 4 bent downward in an L-shape at the tip of a metal substrate 2 having a bolt through hole 3. It has a structure covered with a resin coating layer 21. The coating layer 21 is a detent claw 4
It covers the whole and the front end of the substrate 2 and is formed by electrostatic painting or a method of dipping the front end of the substrate 2 in a melt. Therefore, the edges 5 (see FIG. 10) of the four corners of the rectangular cross section of the press-stopped detent claw portion 4 are hidden by the coating layer 21, and the coating layer 21 corresponds to the edge blunting means.

As the material of the coating layer 21, a synthetic resin which is softer than metal and is mainly suitable is preferably used, such as nylon resin (soft nylon), polyester resin, vinyl chloride resin, polyethylene resin, synthetic resin rubber, and the like. , Any can be used. Coating layer 21
Is suitably about 100 μm to 500 μm.

In the terminal fitting 20, the four corners of the rectangular cross section are hidden by covering the detent claw 4 with the coating layer 21, so that direct interference between the edge and the peripheral edge of the locking hole 10 is prevented. No longer damages the paint on the body 8 side.

Further, since the coating layer 21 covers and covers the tip of the detent claw 4, the detent claw 4 is inserted into the locking hole 10 (a process in which the detent claw searches for the locking hole). Therefore, the paint near the locking hole 10 is not damaged.

Also, the ground terminal fitting 2 of this embodiment
In the case of 0, the resin coating layer 21
Only by providing a method such as painting or dipping,
It can be easily manufactured without any hassle.

As in the case of the grounding terminal fitting 20B of the second embodiment shown in FIG.
Can be prevented, so that the coating layer 21 can be prevented from falling off during transportation or handling. In this case, the shape, the number, and the like of the through holes and the depressions are arbitrary.

FIGS. 3A and 3B show a ground terminal fitting 30 according to a third embodiment of the present invention. In the case of the terminal fitting 30, a heat-shrinkable tube (corresponding to an edge blunting means) 31 is fitted around the detent claw 4 to cover and hide the edge. The heat-shrinkable tube 31 is fitted into the detent claw portion 4 as shown by the arrow in FIG. 3A, and then blown by a hot air 35 with a drier as shown in FIG. It can be easily and securely fixed to the part 4.

As described above, the edge is hidden by covering the heat-shrinkable tube 31 with the detent claw portion 4, so that there is no direct interference between the edge and the peripheral edge portion of the locking hole, and the body side can be painted. It will not hurt. Further, when the heat-shrinkable tube 31 hides the tip of the detent claw 4, the coating near the detent hole 10 is not damaged during the process of inserting the detent claw 4 into the detent hole.

As shown in FIG. 4, a recess 3 is formed in the side edge of the detent claw 4 like the grounding terminal fitting 30 B of the fourth embodiment.
By attaching the heat-shrinkable tube 31 after the provision of the heat-shrinkable tube 4, the heat-shrinkable tube 31 can be prevented from coming off.

As shown in FIG. 5A and FIG. 5B, a wide portion (anchor) for preventing the tube from coming off is provided at the tip of the detent claw portion 4 like the grounding terminal fitting 30C of the fifth embodiment. If a flexible tube (edge dulling means) 31B is forcibly inserted, a tube other than the heat-shrinkable tube, for example, a vinyl chloride tube or the like can be used.

FIGS. 6A to 6C show a ground terminal fitting 40 according to a sixth embodiment of the present invention. This terminal fitting 40
Has a structure in which curved pieces (edge blunting means) 44b are continuously provided on both side edges of the detent claw 44. That is, the detent claw center piece 44 is located at the same position as the conventional detent claw.
is formed, a pair of strips is provided on both sides of the detent claw center piece 44a, and these strips are bent inward to form a curved piece 44b having a smooth curved outer surface. I have. This is called hemming (edge folding).

In this case, the depth dimension T of the detent claw portion 44 is formed to be slightly larger than twice the thickness t of the substrate 2 of the terminal fitting 40, that is, T = 2t + α, so that the detent claw portion 4 Four rounded corners 45 are formed around the periphery, and sharp edges can be eliminated (corresponding to dulling of edges). Note that a bent portion 42 for height adjustment is provided at the tip of the substrate 2 so that the height of the curved piece 44b matches the position of the locking hole, and the illustrated dimension a1 is secured.

In this terminal fitting 40, the detent claw 44
The curved piece 44b is connected to the side edge of the lock piece, so that the curved outer surface of the curved piece 44b hits the peripheral edge of the locking hole instead of the edge, so that the paint on the body side is not damaged. Further, since two of the four rounded corners 45 around the curved piece 44b interfere with the locking holes, the contact pressure per spot is reduced, and the scratches are harder to be damaged.

Further, since a strip is integrally formed on the side edge of the center piece 44a of the detent claw portion and bent to form a curved piece 44b, as in the first to fifth embodiments described above. It is not necessary to combine with a material other than metal, and the whole can be integrally formed by a metal plate.

As in the case of the earthing terminal fitting 50 of the seventh embodiment shown in FIG. 7, the detent pawl center piece 54a and the curved piece (edge dulling means) 54 constituting the detent pawl 54 are provided.
The curved piece 54b may be bent so that there is no gap between the curved piece 54b. In this case, around the curved piece 54b,
No clear four rounded corners, end face 5
5 is rounded in an arc shape. Also in this case, the height of the curved piece 54b matches the position of the locking hole.
A bent portion 52 for height adjustment is provided at the front end of the substrate 2 to secure the illustrated dimension a2.

FIGS. 8A to 8D and FIGS. 9A to 9D.
Indicates ground terminal fittings 60 and 70 according to the eighth and ninth embodiments of the present invention, respectively. These terminal fittings 6
Nos. 0 and 70 are provided with end face rounding (edge crushing) on both side edges of the detent pawls 64 and 74, and the detent pawls 6
4, 74 sharp edges are rounded (blunted). Numerals 65 and 75 indicate end surface rounding portions. in this case,
By providing a round portion 67 and a round notch 77 between the tip of the substrate 2 and the bases of the detent claws 64 and 74,
The end surface rounding can be performed up to the root.

In these terminal fittings 60 and 70, the edges are dulled by rounding the side edges of the detent pawl portions 64 and 74 by rounding the end faces, so that the interference with the peripheral edges of the locking holes occurs. The paint on the body side will not be damaged. Further, since it is only necessary to subject the side edges of the detent pawl portions 64 and 74 to end face rounding, it can be easily realized.

[0037]

As described above, according to the first aspect of the present invention, the edge of the detent claw portion is blunted by the blunting means, so that the body side can be painted when it interferes with the peripheral edge of the locking hole. It will not hurt. Therefore, it is possible to prevent the occurrence of rust due to the paint peeling of the body. In addition, since the edge of the detent claw portion is blunted, it is possible to solve the problem of the electric wire being damaged by the detent claw portion in the distribution process.

According to the second aspect of the invention, since the detent claw is covered with the coating layer, the effect of the first aspect of the invention can be obtained with a simple configuration.

According to the third aspect of the invention, since the detent claw is covered with the soft tube, the effect of the first aspect of the invention can be obtained with a simple configuration.

According to the fourth aspect of the present invention, since the heat-shrinkable tube is used, the heat-shrinkable tube can be easily attached to the detent claw.

According to the fifth aspect of the present invention, since the curved piece is continuously provided on the side edge of the detent claw portion, the effect of the first aspect of the present invention can be obtained by an integrally molded metal plate.

According to the sixth aspect of the invention, the side edge of the detent claw is rounded by rounding the end face, so that the effect of the first aspect of the invention can be obtained only by adding simple processing. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a ground terminal according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a main part of a ground terminal fitting according to a second embodiment of the present invention.

FIGS. 3A and 3B are explanatory views of a ground terminal fitting according to a third embodiment of the present invention, wherein FIG. 3A is a perspective view of a main part showing a state before a heat-shrinkable tube is put on a detent claw, and FIG. It is a principal part perspective view which shows the state which shrunk the tube by putting a heat-shrinkable tube on a pawl part and blowing hot air.

FIG. 4 is an explanatory view of a ground terminal fitting according to a fourth embodiment of the present invention, and is a perspective view of relevant parts showing a state before a heat-shrinkable tube is put on a detent claw.

FIGS. 5A and 5B are explanatory views of a ground terminal fitting according to a fifth embodiment of the present invention, wherein FIG. 5A is a perspective view of a main part showing a state before a soft tube is put on a detent claw, and FIG. It is a principal part perspective view which shows the state which covered the soft tube on the nail | claw part.

6A and 6B are main part configuration diagrams of a ground terminal fitting according to a sixth embodiment of the present invention, wherein FIG. 6A is a plan view, FIG. 6B is a side view, and FIG.
Is a front view.

7 (a) is a plan view, FIG. 7 (b) is a side view, and FIG. 7 (c) is a main part configuration diagram of a ground terminal fitting according to a seventh embodiment of the present invention.
Is a front view.

8 (a) is a plan view, FIG. 8 (b) is a side view, and FIG. 8 (c) is a main part configuration diagram of an earth terminal fitting according to an eighth embodiment of the present invention.
Is a front view, and (d) is an enlarged view of a portion VIIId in FIG.

9A and 9B are main part configuration diagrams of a ground terminal fitting according to a ninth embodiment of the present invention, wherein FIG. 9A is a plan view, FIG. 9B is a side view, and FIG.
Is a front view, and (d) is an enlarged view of the part IXd of FIG.

FIG. 10 is a perspective view of a conventional ground terminal fitting.

[Explanation of symbols]

 4 Detent Claw 5 Edge 8 Body (Material) 10 Lock Hole 20, 20B Ground Terminal 21 Resin Coating Layer (Edge Dulling Means) 30, 30B, 30C Ground Terminal 31, 31B Heat Shrink Tube ( Edge dulling means) 40, 50 Ground terminal fittings 44, 54 Detent claw parts 44b, 54b Curved piece (edge dulling means) 60, 70 Grounding terminal fitting 64, 74 Detent claw part 65, 75 End surface rounding Part (means for dulling the edge)

Claims (6)

[Claims] 1. A grounding terminal having a detent claw inserted into a locking hole on a mating member side for detent at the time of fastening a bolt, wherein the detent claw is provided with the detent claw. A ground terminal fitting provided with means for dulling an edge corresponding to a peripheral portion of the locking hole. 2. The ground terminal fitting according to claim 1, wherein a soft coating layer covering the detent claw portion is provided as the edge dulling means. 3. The ground terminal fitting according to claim 1, wherein a soft tube that fits around the detent claw portion is provided as the edge dulling means. 4. The ground terminal fitting according to claim 3, wherein a heat-shrinkable tube is used as the soft tube. 5. The ground terminal fitting according to claim 1, wherein a curved piece is continuously connected to a side edge of the detent claw as the means for dulling the edge. . 6. The ground terminal fitting according to claim 1, wherein an end surface rounding process is performed on a side edge of the detent claw portion as the means for dulling the edge. .