Malfunction prevention member for welding gun

Abstract

To provide a malfunction prevention member of a welding gun capable of suppressing a malfunction of the welding gun by preventing an erroneous operation to an energization switch of the welding gun.SOLUTION: The welding gun guard includes a fixing part 21 fixed to a welding gun 1, and a guard part 23 connected to the fixing part 21 and guarding an energizing switch 12 provided in the welding gun 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a malfunction prevention member for a welding gun that can prevent erroneous operation of a welding gun's energization switch and suppress malfunction of the welding gun. [Background technology]

[0002] Stud welding has been known as a method for fastening fire-resistant covering materials to metal substrates such as steel frames. A welding gun such as that shown in Figure 1 of Patent Document 1 is commonly used as a device for performing the stud welding.

[0003] That is, a welding pin can be attached to the power supply part of the welding gun using a magnet. For example, when fixing fire-resistant coating material to a steel frame or the like, the tip of the welding pin that has penetrated the fire-resistant coating material is placed against the base material such as the steel frame, and the current switch provided on the grip part of the welding gun is pressed, and the welding pin is welded to the base material by discharging the electric charge supplied from the power supply unit.

[0004] The energization switch provided on the grip of the conventional welding gun is arranged to protrude from the grip, as disclosed in FIG. 1 of Patent Document 1, and is configured so that pressing the energization switch causes current to flow through the power supply part. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2024-008754 Summary of the Invention [Problem to be solved by the invention]

[0006] With conventional welding guns such as those described above, there is a risk that an operator may unintentionally press the energization switch on the grip. Even if an operator does not directly hold the welding gun but instead places it in a waist bag, there is a risk that nearby objects may come into contact with the energization switch and energize it, depending on the operator's posture and the working environment. If the welding gun's energization switch is accidentally operated under such unintended circumstances, it could result in an electric shock accident.

[0007] In view of the above problems, the present invention aims to provide a malfunction prevention member for a welding gun that can prevent erroneous operation of the welding gun's power switch and suppress malfunction of the welding gun. [Means for solving the problem]

[0008] One embodiment of the present invention is a member for preventing malfunction of a welding gun, characterized by having a fixed portion that is fixed to a welding gun, and a guard portion that is connected to the fixed portion and guards an energization switch provided on the welding gun.

[0009] Furthermore, in one embodiment of the present invention, the guard portion is configured to be rotatable relative to the fixed portion, which is a member for preventing malfunction of a welding gun.

[0010] Furthermore, in one embodiment of the present invention, the guard portion is a malfunction prevention member for a welding gun, characterized in that it is rotatable between a guard position that prevents erroneous operation of the energization switch and a non-guard position that does not restrict operation of the energization switch.

[0011] Furthermore, in one embodiment of the present invention, the fixing portion is fixed to the main body or grip of the welding gun. [Effects of the Invention]

[0012] The welding gun malfunction prevention member of the present invention can effectively prevent situations where an operator unintentionally presses the power switch or where a surrounding object touches the power switch and causes it to malfunction.

[0013] Furthermore, because the fixing part is configured to be fixed to the body or grip of the welding gun, the malfunction prevention device of the present invention can be easily attached to conventional welding guns, thereby providing safety measures for welding guns at low cost and easily.

[0014] Furthermore, by configuring the guard portion to be rotatable relative to the fixed portion, it is possible to switch the energization switch between a guarded state and an unguarded state depending on the rotational position of the guard portion. This allows the guard portion to be in the unguarded state when the operator holds the welding gun to perform welding, making it possible to prevent malfunction of the welding gun while maintaining good workability. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a side view of a welding gun equipped with a malfunction prevention member in accordance with an embodiment of the present invention; [Figure 2] FIG. 1 is a front view of a welding gun equipped with a malfunction prevention member in an embodiment of the present invention. [Figure 3] 3A and 3B are a front view and a side view of a fixing portion and a cushioning material in one embodiment of the present invention. [Figure 4] 1A and 1B are a side view and a top view of a guard portion according to an embodiment of the present invention. [Figure 5] 3A and 3B are a front view and a rear view, respectively, of a guard portion according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of a malfunction prevention member for a welding gun according to the present invention will be described with reference to the accompanying drawings. It goes without saying that the present invention is not limited to the embodiment shown below.

[0017] Regarding malfunction prevention member 20 for welding gun 1 according to one embodiment of the present invention, FIG. 1 shows a side view of welding gun 1 to which malfunction prevention member 20 is attached, and FIG. 2 shows a front view thereof.

[0018] 1 and 2, malfunction prevention member 20 of welding gun 1 of this embodiment is configured so as to be easily attached to a conventional welding gun 1. That is, malfunction prevention member 20 is configured to include fixed portion 21 that is fixed to main body 10 of welding gun 1, and guard portion 23 that is connected to fixed portion 21 and guards energization switch 12 provided on grip portion 11.

[0019] That is, as shown in the figure, the guard portion 23 is arranged from the front side in the pressing direction of the energized switch 12 to the grip portion 11 so as to guard against accidental pressing of the energized switch 12. By positioning the guard portion 23 in front of the pressing direction of the energized switch 12, it is possible to effectively prevent the energized switch 12 from being unintentionally pressed by the worker's fingers. Furthermore, it is possible to effectively prevent not only the worker's fingers but also other accessories worn by the worker and surrounding objects in the workplace from coming into contact with the energized switch 12. In this way, the guard portion 23 is arranged in front of the energized switch 12, and therefore functions as a shielding plate for the energized switch 12.

[0020] In addition, fixing portion 21 of malfunction prevention member 20 is configured to be detachable from welding gun 1. In other words, malfunction prevention member 20 is configured to be affixed to main body 10 of welding gun 1, so malfunction prevention member 20 can be easily attached to conventional (existing) welding guns 1. This eliminates the need to prepare a new welding gun with the malfunction prevention member of the present invention pre-attached to replace the conventional (existing) welding gun 1, making it possible to easily implement safety measures for welding gun 1 at low cost. Note that malfunction prevention member 20 may not be configured to be detachable from welding gun 1, but may be pre-attached to the welding gun. In other words, malfunction prevention member 20 may be integral with welding gun 1.

[0021] 1 and 2, the fixing portion 21 of the malfunction prevention member 20 is fixed to the main body 10 of the welding gun 1, but this is not necessarily limited to this configuration. For example, if the configuration is such that the pressing operation of the energization switch 12 is guarded by the guard portion 23, the fixing portion 21 may be fixed to an appropriate position on the grip portion 11 side. With this configuration, the malfunction of the welding gun 1 can be similarly prevented.

[0022] Furthermore, in one embodiment of the present invention, the guard portion 23 can be configured to be rotatable relative to the fixed portion 21, as shown in Fig. 1. For example, the guard portion 23 can be configured to be rotatable between a guard position that prevents erroneous operation of the energized switch 12 and a non-guard position that does not restrict operation of the energized switch 12. With this configuration, it is possible to switch between a guard state and a non-guard state for the energized switch 12 depending on the rotation position of the guard portion 23.

[0023] That is, by rotating the guard portion 23 as described above, it is possible to move the guard portion 23 away from the grip portion 11. This makes it possible to avoid a situation in which the guard portion 23 comes into contact with the worker's fingers and interferes with the operation of the energization switch 12 when the worker holds the grip portion 11 to perform welding work.

[0024] Furthermore, among conventional welding guns 1, there are various angles of grip portion 11 relative to main body 10 of welding gun 1. By configuring guard portion 23 to be rotatable, it can be applied to welding guns 1 with various angles.

[0025] Therefore, by configuring guard portion 23 to be rotatable, it is possible to suppress malfunction of welding gun 1 while maintaining good operability.

[0026] Next, a detailed configuration of the malfunction prevention member 20 according to one embodiment of the present invention will be described.

[0027] Malfunction prevention member 20 in this embodiment further includes buffer material 22 and fastening member 24. Figure 3 shows a front view and a side view of fixing part 21 and buffer material 22 in one embodiment of the present invention. As shown in the figure, fixing part 21, which is fixed to main body 10 of welding gun 1, is a band member having a circular shape corresponding to the external shape of main body 10 of welding gun 1.

[0028] As shown in the figure, opposing fastening pieces 211 are formed at both ends of the band member, and fastening holes 212 are formed in the fastening pieces 211. By attaching fastening members 24 as shown in Figure 2 to the fastening holes 212, it becomes possible for the fixing part 21 to tighten the main body 10 of the welding gun 1, and the malfunction prevention member 20 can be fixed to the main body 10 of the welding gun 1.

[0029] 1 and 3, in this embodiment, an elastic buffer material 22 is disposed between the fixing portion 21 and the main body 10 of the welding gun 1. A rubber plate having a predetermined thickness, for example, can be suitably used as the buffer material 22. With this configuration, the fixing portion 21 can be fixed to the main body 10 of the welding gun 1 in close contact with the main body 10 of the welding gun 1 more firmly without shifting.

[0030] In this embodiment, the malfunction prevention member 20 including the fixing portion 21 is made of metal. However, it is not necessarily limited to metal, and it can also be made of resin, such as plastic. Furthermore, in the embodiment shown in Figures 1 and 2, bolts and nuts are used as the fastening members 24, but it is not necessarily limited to such members, and known fastening members can be used.

[0031] Next, FIG. 4 shows a side view (a) and a top view (b) of the guard portion 23 in one embodiment, and FIG. 5 shows a front view (a) and a back view (b) of the guard portion 23.

[0032] As shown in the figure, the guard portion 23 of this embodiment has an L-shaped shape when viewed from the side, and is composed of a guard piece 231 made of a metal plate, and a connecting piece 232 formed at one end of the guard piece 231 and connected to the fixing portion 21 described above.

[0033] As shown in the figure, a connecting hole 233 is formed in the connecting piece 232, and as shown in FIGS. 1 and 2, the connecting piece 232 is connected to the fixing part 21 by the fastening member 24 described above.

[0034] 2, the two fastening pieces 211 of the fixing part 21 rotatably hold the connecting piece 232 of the guard part 23. This makes it possible to switch between a guard state and a non-guard state for the energizing switch 12 depending on the rotation position of the guard part 23, as described above.

[0035] (Other embodiments) Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and the following modifications are also possible, for example.

[0036] 2 and 3, in the above-described embodiment, the shape of the fixing portion 21 is circular to correspond to the outer shape of the main body 10 of the welding gun 1. However, it is needless to say that the shape is not limited to a circular shape, and it is possible to set the shape of the fixing portion 21 according to the outer shape of the fixing position of the fixing portion 21 on the welding gun 1.

[0037] Furthermore, the shape of the guard piece 231 of the guard portion 23 can be changed as appropriate, and is not limited to a specific shape as long as it is a shape that can prevent or suppress erroneous operation of the energization switch 12.

[0038] 1 and other embodiments, guard portion 23 has an L-shape in side view, which restricts contact with energizing switch 12 from the front and below of welding gun 1. However, this is not limited to this, and for example, guard portion 23 may have a shape that restricts contact with energizing switch 12 from either the front or below. Furthermore, guard portion 23 may have a shape that restricts contact with energizing switch 12 from the front, below, and even from the side.

[0039] Although the embodiments of the present invention have been described above with reference to the drawings, the specific configurations are not limited to these embodiments. The scope of the present invention is defined by the claims rather than the description of the above embodiments, and includes all modifications within the meaning and scope of the claims. Furthermore, the specific methods described in the above examples can be modified within the scope of solving the problems of the present invention. [Explanation of symbols]

[0040] 1 welding gun 10 Main body 11 Gripping part 12 Power switch 20 Malfunction prevention components 21 Fixed part 211 Fastening piece 212 Fastening hole 22 Cushioning material 23 Guard section 231 Guard Piece 232 Connecting piece 233 Connection hole 24 Fastening members

Claims

1. a fixing portion fixed to the welding gun; a guard portion connected to the fixed portion and configured to guard an energization switch provided in the welding gun; A member for preventing malfunction of a welding gun.

2. The guard portion is configured to be rotatable relative to the fixed portion.

2. The welding gun malfunction prevention member according to claim 1.

3. The guard portion is a guard position for preventing erroneous operation of the energizing switch; a non-guard position that does not restrict operation of the energizing switch; It is possible to rotate 3. The welding gun malfunction prevention member according to claim 2.

4. The fixing portion is fixed to the body or grip of the welding gun.

3. The member for preventing malfunction of a welding gun according to claim 1 or 2.

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