Projection welding bolt

Abstract

The projection welding bolt comprises a screw rod, one end of the screw rod is provided with an integrated connecting plate, the outer side of the connecting part is provided with an integrated welding plate and a connecting ring, the welding plate is located on one side of the connecting ring to form a connecting groove with an opening in one side, the connecting plate is located in the connecting groove, the screw rod penetrates through the welding plate, and the screw rod penetrates through the connecting ring. A plurality of welding protruding points are arranged on the welding plate, a connecting structure is arranged between the connecting plate and the connecting ring, a fixing cover plate is arranged in the connecting groove and makes contact with the upper portion of the connecting plate, and a fixing structure is arranged between the fixing cover plate and the connecting ring. The welding and the bolt can meet the corresponding requirements, additional material selection, salient point design and process adjustment are not needed, and the cost is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of fastener technology, and more specifically relates to a projection weld bolt. Background Technology

[0002] Projection welding bolts are made by setting a connecting piece at one end of the bolt and setting several protrusions on the connecting piece. When the bolt is connected to the surface of the part, the protrusions contact the surface of the part. Then, when electricity is applied to the bolt and the part, the protrusions will heat up and melt, and finally the connecting piece is fixed to the surface of the part by welding, which is to say, it is a connection and fixing bolt.

[0003] Depending on the required connection strength, the materials for projection weld bolts will vary. Since the projection and the bolt are integrated, there will be a conflict between the welding requirements of the projection and the material requirements of the bolt. For example, if the bolt is made of high-strength material (medium carbon steel or alloy steel), the welding performance of the projection will be deteriorated, thus sacrificing the welding strength of the projection. Conversely, it may sacrifice the strength of the bolt.

[0004] Therefore, it is necessary to make reasonable material selection, optimize the design of protrusions (such as quantity and shape), and adjust the welding process during the design stage to solve the above problems, but this obviously greatly increases the cost of design, production and labor.

[0005] To address this, a separate projection weld bolt was designed. When in use, the most suitable projection point and bolt are selected according to the requirements, so that the spliced ​​projection weld bolt meets the perfect requirements. This eliminates the need for additional material selection, projection point design, and process adjustment, greatly reducing costs. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a projection weld bolt assembled using a splicing method, which ensures that both the welding and the bolt meet the corresponding requirements, without the need for additional material selection, projection design, or process adjustment, thus greatly reducing costs.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a projection weld bolt, comprising a screw, one end of which is provided with an integral connecting plate, the outer side of which is provided with an integral welding plate and a connecting ring, the welding plate being located on one side of the connecting ring to form a connecting groove with an opening on one side, the connecting plate being located within the connecting groove, the screw passing through the welding plate, the welding plate being provided with a plurality of welding protrusions, a connecting structure being provided between the connecting plate and the connecting ring, a fixing cover plate being provided within the connecting groove, the fixing cover plate contacting the upper part of the connecting plate, and a fixing structure being provided between the fixing cover plate and the connecting ring.

[0008] Furthermore, the connection structure includes several protrusions located on the inner side of the connecting ring, and the connecting plate is provided with a first groove corresponding to the protrusions, both the protrusions and the first groove extending axially.

[0009] Furthermore, the fixing cover plate is provided with a second groove corresponding to the protrusion.

[0010] Furthermore, the fixing structure includes a telescopic block located on the outer circumferential side of the fixing cover plate and a fixing groove located on the inner circumferential side of the connecting ring corresponding to the telescopic block.

[0011] Furthermore, the fixed cover plate is provided with a sliding groove for the telescopic block to slide, and a spring is provided in the sliding groove, which generates an elastic force to push the telescopic block out.

[0012] Furthermore, the telescopic block is inclined toward the side where the fixed cover plate contacts the connecting plate, and the opening edge of the connecting ring is provided with an inner hole chamfer.

[0013] Furthermore, a positioning pin is provided on the contact surface between the fixed cover plate and the connecting plate, and a corresponding positioning hole is provided on the connecting plate.

[0014] Furthermore, the outer circumferential surface of the connecting plate and the inner circumferential surface of the connecting ring are either interference-fitted or clearance-fitted, while the outer circumferential surface of the fixing cover plate and the inner circumferential surface of the connecting ring are clearance-fitted.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: According to the use and welding requirements of the projection weld bolt, different materials of screws and welding plates can be directly selected, as well as welding plates with different numbers and shapes of welding protrusions. After the welding plate is connected in the connecting groove, the three are completely fixed together by the fixing cover plate, thus forming the welding part of the projection weld bolt. Welding can be carried out through the protrusions on the welding part. The projection weld bolt, which is assembled by splicing, can achieve the corresponding requirements for both welding and bolting, and does not require additional material selection, protrusion design and process adjustment, which greatly reduces costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the projection weld bolt of this utility model;

[0017] Figure 2 This is a schematic diagram of the screw and connecting plate structure in the projection weld bolt of this utility model;

[0018] Figure 3 This is a schematic diagram of the connecting ring and welding plate in the projection weld bolt of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the fixing cover plate in the projection weld bolt of this utility model;

[0020] Figure 5 This is a top view of the projection weld bolt of this utility model.

[0021] Reference numerals: 1. Screw; 2. Connecting plate; 3. Welding plate; 4. Connecting ring; 5. Connecting groove; 6. Welding protrusion; 7. Fixing cover plate; 8. Protrusion; 9. First groove; 10. Second groove; 11. Telescopic block; 12. Fixing groove; 13. Slide groove; 14. Spring; 15. Chamfer on inner hole; 16. Positioning pin; 17. Positioning hole. Detailed Implementation

[0022] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0024] Reference Figures 1 to 5 The present invention will be further described below.

[0025] A projection weld bolt includes a screw 1, one end of which is provided with an integral connecting plate 2. An integral welding plate 3 and a connecting ring 4 are provided on the outer side of the connecting plate 2. The welding plate 3 is located on one side of the connecting ring 4, forming a connecting groove 5 with an opening on one side. The connecting plate 2 is located in the connecting groove 5. The screw 1 passes through the welding plate 3. The welding plate 3 is provided with a plurality of welding protrusions 6. A connecting structure is provided between the connecting plate 2 and the connecting ring 4. A fixing cover plate 7 is provided in the connecting groove 5. The fixing cover plate 7 contacts the upper part of the connecting plate 2. A fixing structure is provided between the fixing cover plate 7 and the connecting ring 4.

[0026] like Figures 1 to 5As shown, depending on the use and welding requirements of the projection weld bolt, different materials of screw 1 and welding plate 3 can be directly selected, as well as welding plate 3 with different numbers and shapes of welding protrusions 6. After the welding plate 3 is connected in the connecting groove 5, the three are completely fixed together by the fixing cover plate 7, thus forming the welding part of the projection weld bolt. Welding can then be performed through the protrusions on the welding part. The projection weld bolt, which is assembled by splicing, can achieve the corresponding requirements for both welding and bolting, and does not require additional material selection, protrusion design, or process adjustment, thus greatly reducing costs.

[0027] like Figure 5 As shown in the example, the preferred embodiment of this example includes a plurality of protrusions 8 located on the inner side of the connecting ring 4, and the connecting plate 2 is provided with a first groove 9 corresponding to the protrusions 8, and both the protrusions 8 and the first groove 9 extend axially.

[0028] Specifically, before inserting the connecting plate 2 into the connecting groove 5, align the protrusion 8 and the first groove 9, and then place the connecting plate 2 into the connecting groove 5 so that it cannot rotate.

[0029] like Figure 5 As shown, specifically, the protrusion 8 is T-shaped, and the first groove 9 is T-shaped.

[0030] like Figure 5 As shown in this example, preferably, the fixing cover plate 7 is provided with a second groove 10 corresponding to the protrusion 8. Before the fixing cover plate 7 is connected to the connecting groove 5, the protrusion 8 is aligned with the second groove 10 first, and then the fixing cover plate 7 is placed into the connecting groove 5 to improve the fixing effect of the fixing cover plate 7.

[0031] like Figure 1 , 3 As shown in Figure 4, in this preferred embodiment, the fixing structure includes a telescopic block 11 that is retractable on the outer circumferential side of the fixing cover plate 7 and a fixing groove 12 corresponding to the telescopic block 11 on the inner circumferential side of the connecting ring 4.

[0032] Specifically, when connecting the fixed cover plate 7, the telescopic block 11 is first retracted into the fixed cover plate 7. After the fixed cover plate 7 is placed into the connecting groove 5 and contacts the connecting plate 2, the telescopic block 11 extends out and into the fixed groove 12, so that the fixed cover plate 7 and the connecting ring 4 are fixedly connected.

[0033] like Figure 1 , 3As shown in Figure 4, in this preferred embodiment, the fixed cover plate 7 is provided with a sliding groove 13 for the telescopic block 11 to slide. A spring 14 is provided in the sliding groove 13. The spring 14 generates an elastic force to push the telescopic block 11 out. When the telescopic block 11 retracts, the spring 14 generates a greater pushing elastic force. When the telescopic block 11 is aligned with the fixed groove 12, the spring 14 can automatically push the telescopic block 11 into the fixed groove 12. After fixing, the fixed cover plate 7 cannot be removed. The fixed cover plate 7, connecting plate 2, connecting ring 4 and welding plate 3 are spliced ​​into one piece.

[0034] like Figure 3 and 4 As shown, in this preferred embodiment, the telescopic block 11 is inclined toward the side of the fixed cover plate 7 that contacts the connecting plate 2, and the opening edge of the connecting ring 4 is provided with an inner hole chamfer 15. When the fixed cover plate 7 extends into the connecting groove 5, the inclined side of the telescopic block 11 contacts the inner hole chamfer 15 on the connecting ring 4, so that the telescopic block 11 automatically retracts under force.

[0035] Specifically, a flexible rotating locking block can be provided on the outer circular side of the fixed cover plate 7 to replace the telescopic block 11 and the spring 14. A clearance groove corresponding to the elastic locking block is provided on the outer circular side. The outer side of the elastic locking block is inclined. When the fixed cover plate 7 is placed in the connecting groove 5, the elastic block is squeezed and rotated into the clearance groove by the inner hole chamfer 15. When the fixed cover plate 7 is completely placed in the connecting groove 5, the locking block rotates and resets, entering the fixing groove 12 of the connecting ring 4, which can also realize the fixed connection of the fixed cover plate 7.

[0036] like Figure 2 and 4 As shown, in this preferred embodiment, a positioning pin 16 is provided on the contact surface between the fixed cover plate 7 and the connecting plate 2, and a corresponding positioning hole 17 is provided on the connecting plate 2. When connecting the fixed cover plate 7, the second groove 10 on the fixed cover plate 7 is aligned with the protrusion 8 by connecting the positioning pin 16 with the positioning hole 17, so that the telescopic block 11 is aligned with the fixed groove 12.

[0037] In this example, preferably, the outer circular side surface of the connecting plate 2 and the inner circular surface of the connecting ring 4 are interference-fitted or clearance-fitted, and the outer circular side surface of the fixing cover plate 7 and the inner circular surface of the connecting ring 4 are clearance-fitted, thereby improving the splicing strength and preventing loosening.

[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A projection weld bolt, characterized in that: The device includes a screw, one end of which is provided with an integral connecting plate. An integral welding plate and a connecting ring are provided on the outer side of the connecting part. The welding plate is located on one side of the connecting ring, forming a connecting groove with an opening on one side. The connecting plate is located in the connecting groove, and the screw passes through the welding plate. The welding plate is provided with a plurality of welding protrusions. A connecting structure is provided between the connecting plate and the connecting ring. A fixing cover plate is provided in the connecting groove, and the fixing cover plate contacts the top of the connecting plate. A fixing structure is provided between the fixing cover plate and the connecting ring.

2. The projection weld bolt according to claim 1, characterized in that: The connection structure includes several protrusions located on the inner side of the connecting ring, and the connecting plate is provided with a first groove corresponding to the protrusions. Both the protrusions and the first grooves extend axially.

3. The projection weld bolt according to claim 2, characterized in that: The fixed cover plate is provided with a second groove corresponding to the protrusion.

4. The projection weld bolt according to claim 1, characterized in that: The fixing structure includes a telescopic block located on the outer circumferential side of the fixing cover plate and a fixing groove located on the inner circumferential side of the connecting ring corresponding to the telescopic block.

5. The projection weld bolt according to claim 3, characterized in that: The fixed cover plate is provided with a sliding groove for the telescopic block to slide. A spring is provided in the sliding groove, and the spring generates an elastic force to push the telescopic block out.

6. The projection weld bolt according to claim 3, characterized in that: The telescopic block is inclined toward the side where the fixed cover plate contacts the connecting plate, and the opening edge of the connecting ring is provided with an inner hole chamfer.

7. The projection weld bolt according to claim 5, characterized in that: A positioning pin is provided on the contact surface between the fixed cover plate and the connecting plate, and a corresponding positioning hole is provided on the connecting plate.

8. The projection weld bolt according to claim 1, characterized in that: The outer circular side of the connecting plate and the inner circular surface of the connecting ring are either interference-fitted or clearance-fitted, while the outer circular side of the fixing cover plate and the inner circular surface of the connecting ring are clearance-fitted.

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