JPH04132214U - Welding stud with cap - Google Patents

Abstract

(57) [Summary] [Purpose] To form a cap of a welded stud with a cap into a reusable structure. [Structure] The welding stud 1 with a cap has a flange 3 formed on the side of the welding end 2, has a shaft portion 4 extending in a rod shape from the flange 3, and a cap 10 that covers the shaft portion 4 up to the flange 3 is fitted. ing. A male thread 5 is formed on the outer peripheral surface of the shaft portion 4 of this stud, and a female thread 13 is formed in the hole of the cap 10 to be screwed into the male thread. It is structured so that it can be used as a As a modification of this stud, the shaft portion of the stud consists of a rod-shaped body integrally connected to the flange, and a locking shoulder is provided on the outer peripheral surface of the rod-shaped body, and a locking shoulder is engaged with the locking shoulder on the inner surface of the cap hole. A locking pawl is formed in each case so that after the cap has been removed, the cap can be relocked to the stud.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to welding studs, and more particularly to capped welding studs.

0002

[Conventional technology]

A flange is formed on the welded part and has a rod-shaped shaft extending from the flange. Welded studs are well known. This welded stud is used for various purposes, such as Used to attach pipes etc. via clips or by using screws on studs to install the nut, or make sure that the shaft of the stud is electrically connected to the vehicle body. It is also used as a grounding terminal. In such studs, welding After fixing it to the car body, the shaft part is also coated with vinyl chloride for rust prevention etc. It may get coated. In this case, use it as a ground terminal. Also, when screwing the nut onto the thread formed on the shaft, The coating material fills the threads and prevents threading.

0003 In order to prevent such defects, that is, coating on the shaft, the shaft should be placed on the tip side. We offer a capped weld stud with a cap that covers part of the flange. It has been proposed (see Japanese Patent Laid-Open No. 13911/1983). This welding spout with cap The tad can be removed by removing the coated cap after painting is completed. This prevents the coating from affecting the tad.

0004

[Problem that the idea aims to solve]

Such capped studs eliminate the problem of negative coating effects. Ru. In this capped stud, the cap protects the shaft from anti-rust materials. After the stud has completed its role and is removed, it is discarded and another nut, etc. is attached to the stud. tools were used. Disposal of such caps leads to an increase in waste, and nuts, etc. It had the disadvantage of requiring a fixing device.

[0005] Therefore, the purpose of the present invention is to make it possible to reuse the cap even after it is removed. The purpose of the present invention is to provide a stud with a cap that can be used as a cap.

[0006]

[Means to solve the problem]

In order to achieve this purpose, according to the present invention, a flange is formed on the side of the welded end. and has a rod-shaped shaft extending from this flange, and the shaft is connected to the shaft opposite to the welding end. A welding star with a cap fitted with a cap that covers from the tip of the part to part of the flange. A male thread is formed on the outer circumferential surface of the stud shaft, and a male thread is formed in the hole of the cap. A female thread is formed that threads into the male thread, and after the cap is removed, the cap is It is characterized by a structure that allows it to be used as a mounting nut on a stud. Welded studs with caps are available to allow reuse of the caps. .

[0007] Further, according to the present invention, the shaft portion of the stud has a rod-like shape integrally connected to the flange. The rod-shaped body has a locking shoulder on its outer circumferential surface, and a locking shoulder on the inner surface of the cap hole. A locking pawl is formed to lock the cap, and after removing the cap, the is formed into a structure that can be used as a fixing device to a stud. A capped weld stud is provided to allow for reuse of the cap.

[0008]

【Example】

Embodiments of the present invention will be described below with reference to the drawings. In Figures 1 to 3, A first embodiment of a capped weld stud according to the invention is shown. welding The tad 1 is made of metal, and a flange 3 is formed on the side of the welding end 2. It has a shaft portion 4 extending in the shape of a rod from the shaft portion 3, and a male thread 5 is formed on the outer peripheral surface of the shaft portion 4. There is. Then, the shaft part 4 is connected from the shaft part tip 6 opposite to the welding end part 2 to the small diameter of the flange 3. A plastic cap 10 covers up to the portion 7.

[0009] As is clear from FIG. 2, this cap 10 is formed into a substantially hexagonal cylindrical shape. A blind hole 11 that covers the stud shaft portion 4 is formed inside the stud shaft portion 4 . cap 10 The open end 12 of the flange is sized to fit firmly into the small diameter portion 7 of the flange. Ru. The outer circumferential surface of the cap 10 is equipped with a tool (such as in FIG. 4) for removing the cap. Hexagonal to function as a nut that can be rotated by is formed. Note that this shape can be anything other than a hexagon as long as it can be rotated by a tool. It may be in the shape of Further, the inner surface of the blind hole 11 is provided with a screw thread for screwing into the male thread 5 of the stud shaft portion 4. A female thread 13 is formed. This allows you to remove the cap after removing it. The cap can be used as a mounting nut to the stud. In addition, this female screw 13 In the embodiment, it is formed of a metal different from the cap 10 and is attached to the stud shaft. The strength is increased. However, the female thread 13 is formed directly on the inner surface of the cap 10. In this case, it can be formed before attachment to the stud shaft 4, but When the cap 10 is first attached to the stud shaft 4, it is formed by screwing. You can also Further, the tip side portion 14 of the cap 10 is formed in a conical shape. Preferably, this facilitates insertion of the cap removal tool. Furthermore , a groove is provided on the outer peripheral surface of the cap for holding the cap 10 on a tool after being removed. 15 is formed.

0010 4 to 8, the nose 17 of the cap removal tool is shown and the nose 17 of the cap removal tool is shown. Then, the cap 10 was removed and another member 18 was attached to the stud shaft 4. Afterwards, the member 18 is shown secured by the cap 10. First of all, In FIG. 4, a capped stud 1 is welded to a vehicle body 19. As shown in FIG. This space A rust-preventing material is coated on the tad 1 including the cap 10. this state Then, the nose 17 of the tool is placed so as to completely cover the stud 1. this At this time, the cap housing hole of the nose 17 has a cap accommodating hole diametrically opposed to the middle part of the cap housing hole. A holding mechanism 20 is provided that engages and holds the groove 15 of the pulley 10. In the example shown A holding mechanism 20 is composed of a small ball and a spring, and the nose 17 holds the cap 10. When gripped properly, it clicks.

[0011] As shown in FIG. 4, position the nose 17 of the tool to grip the cap 10. After that, when the tool is operated, the nose 17 of the tool rotates to release the key, as shown in Figure 5. Remove the cap 10 from the stud shaft portion 4. With the cap 10 removed, As shown in FIG. 6, the mounting hole of another member 18 is passed through the stud shaft 4 to The material 18 is placed on the vehicle body 19. After placing the member 18, attach the nose 17 of the removal tool to the Place a certain cap 10 on the tip of the stud shaft 4 and press the cap as shown in FIG. Rotate the cap 10 in the installation direction and tighten the member 18 to the stud flange 3. Let's go. Then, when the tool nose 17 is pulled upward, the cap 10 remains as it is. It remains on the stud shaft portion 4 and functions as a nut for holding the member 18.

0012 9 to 11 show a second embodiment of the capped welding stud according to the present invention. has been done. This capped welding stud 25 is made of metal and has a welded end 2 6, a flange 27 and a connecting portion 28 on the opposite side of the welded end 26; , made of a plastic rod to form the shank of this stud. Connect the shaft member 30 and the stud with the shaft member to the small side of the flange 27 from the opposite side of the welding end. It consists of a plastic cap 31 that covers up to the diameter portion. Note that in this example The shaft member 30 is integrally attached to the flange 27 by the connecting portion 28 of the stud 29. A groove 32 forming a locking shoulder is provided on the outer peripheral surface of the shaft member 30. It is. Preferably, a plurality of grooves 32 are formed. Moreover, this groove 32 is formed A slit 33 extending in the axial direction of the shaft member 30 is formed in the so that the locking shoulder can fall radially inward.

[0013] Further, the inner surface of the cap 31 is provided with a lock formed by the groove 32 of the shaft member 30. A locking pawl 35 that locks onto the shoulder is formed, and the cap 31 is attached to the stud shaft member 30. It's on. Further, as is clear from FIG. 10, the cap 31 has a substantially cylindrical shape. The outer circumferential surface has a longitudinally intermediate portion for removing the cap. A locking shoulder 36 is formed. This locking shoulder does not have to be formed on the entire outer circumferential surface. , for example, may be a partial cut.

[0014] 12-16 show another cap removal tool nose 38, such as Referring to the drawing, rust-proofing material is applied to the capped stud 25 welded to the vehicle body 19. Once applied, the cap 31 is removed from the stud 29 by a tool. Explain the situation. First, as shown in FIG. 12, the nose 38 of the tool is capped. It is arranged so as to completely cover the stud 25. Then, when the tool is operated, the figure 13, a pair of jaws 39 grips the body of the cap 31 and holds the cap. It bites into a locking shoulder 36 formed on the plate 31 and is locked. Then, as shown in FIG. The jaw 39 is retracted upward, and the cap 31 is thereby removed. The connection is removed by raising the stud 29 a certain distance above the shaft member 30. Na In this case, since the shaft member 30 is bent in the diameter reduction direction by the slit 33, the locking shoulder The locking claw 35 is released. After removal, remove the cap as shown in Figure 15. A member 40 such as a U-shaped member is inserted between the lower end portion of 31 and the stud flange 27. Then, it is placed on the shaft member 30. After this arrangement, lower the jaw 39 of the tool downwards. , as shown in FIG. 16, attach the cap 31 to the stud shaft member 30 with the locking claw 35 to the locking shoulder of the groove 32 and connect again, the member 40 is fixed to the vehicle body 19. It will be done. That is, the cap 31 functions as a fixing device.

[0015]

[Effect of the idea]

According to the welded stud with a cap of the present invention, the cap is firmly attached to the stud. Since it functions as a fitting, the cap can be used as is, and a fixing device can be used separately. Not only does it save you the trouble of having to clean the cap, but it also eliminates the amount of waste that comes from disposing of the cap. The size will be gone.

[Brief explanation of drawings]

FIG. 1 is a front view of a capped stud according to a first embodiment of the present invention.

FIG. 2 is a side view of the capped stud according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a view of the tool being placed on the stud to remove the cap with the tool;

FIG. 5 shows the cap removed from the stud by rotating the nose of the tool.

FIG. 6 is a diagram showing how another member is placed on the stud with the cap removed.

FIG. 7 shows the tool nose rotated to reinstall the cap on the stud.

FIG. 8 is a diagram showing a state in which the member is attached to the vehicle body by a cap.

FIG. 9 is a front view of a capped stud according to a second embodiment of the present invention.

FIG. 10 is a side view of a capped stud according to a second embodiment of the present invention.

FIG. 11 is a sectional view taken along line BB in FIG. 10;

FIG. 12 shows a stud with a cap according to a second embodiment,
9 is a view of the tool being placed on the stud for removing the cap with a tool different from that of FIGS. 4-8; FIG.

FIG. 13 shows the jaws gripping the stud to remove the cap with a tool.

FIG. 14 is a diagram showing a state in which the cap is removed by raising it by a certain height using a tool.

FIG. 15 is a diagram showing a state in which other members are attached to the stud shaft member between the cap and the stud flange that have been raised to a certain height.

FIG. 16 is a diagram showing a state in which the cap is lowered using a tool and the member is fixed to the vehicle body by the cap.

[Explanation of symbols]

1 Stud with cap 2 Welding end 3 Flange 4 Shaft part 5 Male thread 7 Small diameter part of flange 10 Cap 11 Blind hole 12 Opening end portion 13 Female thread 14 Tip side part 15 Groove 17 Nose 18 Mounting parts 19 Vehicle body 20 Holding mechanism 25 Welding stud with cap 26 Welding end 27 Flange 28 Connection part 30 Shaft member 31 Cap 32 Groove for locking shoulder 33 slit 35 Locking claw 36 Locking shoulder for jaws 38 Nose of removal tool 39 Joe 40 Mounting parts

Claims (2)

[Scope of utility model registration request] 1. A cap having a flange formed on the welding end side and a shaft extending rod-like from the flange, and covering the shaft from the tip of the shaft opposite to the welding end to a part of the flange. In a welded stud with a cap fitted with
A male thread is formed on the outer circumferential surface of the stud shaft portion, and a female thread is formed in the hole of the cap to be screwed into the male thread, and after the cap is removed, the cap can be used as a mounting nut for the stud. A welded stud with a cap, characterized in that it is formed in a. 2. A cap having a flange formed on the side of the welded end and a shaft extending from the flange in a rod shape, and covering the shaft from the tip of the shaft opposite to the welded end to a part of the flange. In a welded stud with a cap fitted with
The shaft portion of the stud is a rod-shaped body integrally connected to the flange, and the rod-shaped body has a locking shoulder on its outer circumferential surface, and a locking pawl that locks on the locking shoulder on the inner surface of the cap hole. A welding stud with a cap, characterized in that the cap is formed in such a structure that, after the cap is removed, the cap can be used as a fastener to the stud.