JPH0539763U - Welding studs - Google Patents

Abstract

(57) [Summary] [Object] To provide a clip which can be easily and quickly removed while maintaining the ease of attachment of the clip. [Structure] The welded stud 1 has one end welded and fixed to a base material panel such as a vehicle body, and the clip 2 is locked to the other end to fix a member to be attached to the base material panel. A guide groove 12 for guiding the leg 6 of the clip 2 is formed on the side surface of the stud shaft portion 10 so as to extend from the end portion to the middle of the shaft portion, and the guide groove 12 receives the projection 8 of the clip leg 6 in a concave portion 14. The removal groove 16 is formed from this recess 14 so as to be inclined in the outer peripheral direction of the stud shaft, and can be easily removed by slightly rotating the clip 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a welding stud that is fixed by welding to a base material panel of a vehicle body or the like, and a clip is locked to a shaft portion to fix an attached member such as an insulator to the vehicle body or the like.

[0002]

[Prior Art]

 Many welding studs are known in which a base material panel of a vehicle body or the like is welded and fixed, and a clip is locked to a shaft portion to fix a member to be attached such as an insulator to the vehicle body or the like. Typical examples are a threaded stud with a thread formed on the shaft and a head that is formed by enlarging the diameter of the end opposite to the weld end to lock the clip. T-studs are known. These studs are preferable from the viewpoint of waterproofing because they do not make holes in the vehicle body. Furthermore, since the work of attaching the clip can be easily done by pushing the clip or sliding it laterally, it will be widely used in the future. It is evaluated as.

[0003]

[Problems to be solved by the device]

 In the conventional stud, it is easy to attach a clip (and thus an attached member), but it is not so easy to remove the clip. For example, with a screw stud, you can remove it by rotating the clip, but you have to rotate the clip many times, and it takes time to remove it, and it is difficult to remove it in a narrow place or a place where it is difficult to reach. It was troublesome. Similarly, with the T-stud, the work of releasing the lock that holds the clip is troublesome.

Therefore, an object of the present invention is to provide a welding stud that can easily remove the clip while maintaining the ease of attaching the clip.

[0005]

In order to achieve such an object, according to the present invention, one end is welded and fixed to a base material panel of a vehicle body or the like, and a clip is locked to the other end side to thereby provide a base material. A welding stud for fixing a member to be attached to a panel, and a guide groove for the leg of the clip is formed on the side surface on the other end side extending from the end portion to the middle of the shaft portion. Ends with a recess for receiving the projection of the clip leg, and from this recess there is provided a welding stud characterized in that a removal groove inclined toward the outer peripheral direction of the stud shaft is formed.

[0006]

【Example】

 Hereinafter, embodiments according to the present invention will be described with reference to the drawings. 1 to 7 show a welding stud 1, and FIGS. 8 and 9 show a member 4 such as an insulator attached to a base material panel 3 such as a vehicle body by engaging a clip 2 with the stud 1. It is shown how to attach. The clip 2 is integrally molded of plastic and has an upper head 5 and legs 6 extending downward, and a groove 7 for rotating the clip 2 is formed on the upper surface of the head 5. There is. In the illustrated example, two legs 6 are provided, and the tip, that is, the lower end of the leg 6 has a protrusion 8 directed inward. This clip 2 is a typical one, and may have another shape as long as it has a head and legs and can be locked to the stud 1.

The welding stud 1 according to the present invention is formed of a metallic material, the lower end of which is welded to the base material panel 3, and the shaft portion 10 above the welding stud 1 has a substantially cylindrical shape so as to be held by the collet chuck of the welding gun. It is a power supply part that is formed and receives power from the collet chuck. The tip of the shaft is tapered so that it can be easily inserted into the collet chuck of the welding gun. In this welding stud 1, one end (lower end in FIG. 1) is formed into a cone having a taper of 4 ° to 7 ° and a diameter larger than the outer diameter of the shaft portion so that it can be welded well to a base metal panel such as a vehicle body. Is formed as a flange 11. It should be noted that a projection 12 for the contact welding method and the gap welding method as shown in FIG. 7 may be formed on the top of this flange.

In the present invention, one end of the weld stud 1, that is, the flange 11 is welded and fixed to a base material panel 3 such as a vehicle body. The other end (the upper end in FIG. 1, hereinafter simply referred to as the upper end) is a free end into which the clip 2 is pushed, and the clip 2 is pushed into the shaft portion 10 as it is. A guide groove 12 for guiding the leg 6 of the clip 2 is formed on the side surface of the shaft portion 10 so as to extend from the upper end to the middle of the shaft portion 10. The guide grooves 12 are diametrically opposed to each other so as to receive the pair of legs 6 of the clip 2. The number of the guide grooves 12 does not depend on the number of the clip legs 6, and may be, for example, one or three or more. That is, as long as the clip leg can be locked and the clip 2 can be fixed to the stud 1, at least one guide groove is enough.

The upper portion of each guide groove 12, that is, the inlet 13 is formed in a fan shape so that the tips of the legs 6 of the clip 2 can be easily picked up. This fan shape may extend to the lower end of the groove 12. The guide groove 12 also ends in a recess 14 that receives the projection 8 of the clip leg 6. The recess 14 receives the protrusion 8 and is formed deep inside the shaft 10 in the radial direction. When the protrusion 8 of the clip leg 6 enters the recess 14, the leg is locked. A removal groove 16 extending from the recess 14 in the outer peripheral direction of the stud shaft portion 10 is formed. The removal groove 16 is shallow so as to form a locking step portion 17 at the boundary with the recess 14, and gradually becomes shallower so as to be continuous with the outer peripheral surface of the shaft portion 10 as the distance from the recess 14 increases. Is formed to be inclined.

The guide groove 12 and the concave portion 14 may have a rectangular cross section as shown in FIG. 3. However, as shown in FIG. 5, the corners are rounded. Good. Further, the removal groove 16 may be formed only on one side of the recess 14 as shown in FIGS. 1 and 3, but may be formed on both sides of the recess 14 as shown in FIG. Well, in this case, when removing the clip 2, the clip can be rotated in either direction. The example of FIG. 6 is an example in which the removal grooves 16 are formed on both sides of the rounded recess 14 of FIG.

The manner in which the attached member 4 such as an insulator is attached to the base material panel 3 such as a vehicle body using the welded stud 1 having the above structure will be described with reference to FIGS. 8 and 9. First, the welding stud 1 is held by a welding gun (not shown) and is welded to the base material panel 3 at a predetermined position. The welded stud 1 and the mounting hole 19 of the mounted member 4 are aligned and arranged on the base material panel 1. After this arrangement, when the leg 6 of the clip 2 is fitted into the guide groove 12 and pushed in, the projection 8 of the leg 6 is locked in the recess 14, the clip 2 is fixed to the stud 1, and the head 5 of the clip 2 Fixes the attached member 4 to the base material panel 3. When the clip 2 is locked to the stud 1, as shown in FIG. 9, the leg 6 of the clip 2 is picked up by the fan-shaped inlet 13 of the guide groove 12 of the stud 1 and is pushed in as shown by an arrow 21. For example, the clip 2 is locked to the stud 1.

Next, when removing the locked clip 2 from the stud 1 and removing the mounted member 4 from the panel 3, apply a plus driver or the like to the groove 7 formed in the head 5 of the clip 2. You can rotate it clockwise. In FIG. 9, when the clip 2 is rotated in the direction of the arrow 22, the projection 8 of the clip leg 6 that has been locked in the recess 14 has passed over the locking step 17 and reached the removal groove 16 for removal. Further rotation of the clip 2 along the groove 16 allows the clip 2 to be easily removed from the stud 1.

[0013]

[Effect of the device]

 According to the welding stud of the present invention, a guide groove for guiding the clip leg is formed on the side surface of the shaft extending from the end to the middle of the shaft, and the guide groove is a recess for receiving the protrusion of the clip leg. Since the recess forms a removal groove that is inclined in the outer peripheral direction of the stud shaft, the clip can be attached simply by pushing it into the stud, and the attachment work is easy. If the clip is rotated within 360 ° with respect to the shaft, the clip can be removed from the stud, and the removal can be done easily and in a short time.

[Brief description of drawings]

FIG. 1 is a front view of a welding stud according to the present invention.

FIG. 2 is a plan view of a welding stud according to the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a view similar to FIG. 3, showing an example in which removal grooves are formed on both sides of a recess.

FIG. 5 is a view similar to FIG. 3 showing an example in which the corners of the guide groove and the recess are formed to be round.

6 is a view similar to FIG. 3, showing an example in which the guide groove and the recess of FIG. 5 are provided and the removal grooves are formed on both sides of the recess.

FIG. 7 is a partial front view of a stud showing an example in which a projection is provided on the welding flange of the welding stud.

FIG. 8 is a sectional view showing a state in which a member to be attached is fixed to a base material panel by using a clip on a welding stud according to the present invention.

FIG. 9 is a perspective view of the stud and the clip for explaining the operation of locking the clip to the welding stud according to the present invention and removing the clip.

[Explanation of symbols]

 1 Weld Stud 2 Clip 3 Base Material Panel 4 Attached Member 5 Clip Head 6 Clip Leg 7 Head Groove 8 Leg Projection 10 Stud Shaft 11 Stud Flange 12 Guide Groove 13 Guide Groove Entrance 14 Recess 16 Groove Removal 17 Lock step

Claims (2)

[Scope of utility model registration request] 1. A welding stud, one end of which is welded and fixed to a base material panel of a vehicle body or the like, and a clip is locked to the other end side to fix an attached member to the base material panel. A guide groove for guiding the leg of the clip is formed on the side surface so as to extend from the end portion to the middle of the shaft portion, and this guide groove ends with a concave portion for receiving the projection portion of the clip leg, and from the concave portion, the stud shaft is formed. A welding stud characterized in that a removal groove that is inclined in the outer peripheral direction of the portion is formed. 2. The weld stud according to claim 1, wherein the guide groove portion on the end side is formed in a fan shape so as to easily guide the leg of the clip.