Automobile self-tapping screw combination structure capable of being tightly assembled

Abstract

The utility model relates to the technical field of automobile self-tapping screws, in particular to an automobile self-tapping screw combined structure capable of being tightly assembled, which comprises a drill bit, a top tray and a sealing device, the top tray is placed on the surface of the drill bit, the sealing device is arranged on the surface of the top tray, the sealing device comprises a metal ring, and the metal ring is sleeved on the surface of the top tray. The inner side of the metal ring is fixedly connected with a plurality of annularly-arranged placing blocks, the surface of the metal ring is fixedly connected with a second rubber pad and a first rubber pad, the surface of the top disc is provided with a plurality of annularly-arranged placing openings, the placing blocks are connected with the surfaces of the placing openings in an inserted mode, and a pressing disc is placed on the surface of the metal ring. According to the combined structure, through the arrangement of the sealing device, gaps in the threaded holes can be filled with a plurality of rubber pads, the situation that the combined structure shakes in the using process is avoided, meanwhile, the rubber pads have high friction force, and the tightness of the combined structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive self-tapping screws, in particular to a combined structure of automotive self-tapping screws capable of tight assembly. Background Art

[0002] Automotive self-tapping screws are a special type of screw, characterized by being able to directly tap threads in mounting holes without pre-drilling the threaded holes, thereby achieving connection. Such screws are usually made of metal materials, and their important dimensions include the major diameter, minor diameter, pitch, and thread profile angle of the thread, etc. The basic working principle of self-tapping screws is that on connectors made of thermoplastic plastics, the internal threads in the mounting holes are forcibly extruded by the rotating self-tapping screws; while for parts made of thermosetting plastics with higher hardness, the internal threads in the mounting holes can be cut by the rotating self-tapping screws. The main advantages of using self-tapping screws for tightening connections include high anti-loosening ability and being removable and installable, which are suitable for connecting plastic parts in fields such as automobiles. With the development of society, when automotive plastic parts need to be connected, a combined structure is used.

[0003] Existing equipment such as CN207687151U, a combined structure of automotive self-tapping screws capable of tight assembly, includes a screw head. One end of the screw head is connected to a stud, and a cylindrical chute is provided in the middle of the screw head, and one end of the chute extends to the inside of the stud. A stopper is placed at one end of the chute close to the screw head, and a slider is placed in the middle of the chute. First springs are welded to both ends of the slider, and an installation groove is provided on the rod body of the stud. An adjusting rod is inserted into the inside of the installation groove, one end of the adjusting rod extends to the outside of the installation groove, and the other end of the adjusting rod contacts the slider. When using this device, first embed the pointed part of the stud into the connection part, and then use a screwdriver to rotate to complete the installation. The installation process is convenient and simple.

[0004] When a worker needs to fix automotive plastic parts, the worker places the combined structure in the threaded holes of the automotive plastic parts so that the combined structure can fix the automotive plastic parts. However, there will be a certain gap between the combined structure and the threaded holes after fixation, resulting in the vibration generated during the driving of the vehicle affecting the combined structure, and further causing the problem of shaking of the combined structure during use. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defect that the combined structure will shake during use in the prior art, and to propose a combined structure of automotive self-tapping screws capable of tight assembly.

[0006] To achieve the above object, the utility model adopts the following technical solution: An automotive self-tapping screw combination structure capable of tight assembly, including a drill bit, a top plate and a sealing device. The top plate is placed on the surface of the drill bit, and the sealing device is arranged on the surface of the top plate. The sealing device includes a metal ring sleeved on the surface of the top plate. A plurality of annularly arranged placing blocks are fixedly connected to the inner side of the metal ring. A second rubber pad is fixedly connected to the surface of the metal ring, and a first rubber pad is also fixedly connected to the surface of the metal ring. A plurality of annularly arranged placing openings are formed on the surface of the top plate, and the placing blocks are inserted into the surfaces of the placing openings. A pressing plate is placed on the surface of the metal ring, and a chassis is fixedly connected to the surface of the pressing plate. The chassis is placed on the surface of the top plate, and the chassis can cooperate with the pressing plate to support the pressing plate.

[0007] Preferably, a plurality of inserting blocks are fixedly connected to the surface of the chassis. The plurality of inserting blocks are annularly arranged and are inserted into the inner surface of the top plate. The inserting blocks can cooperate with the chassis to support the inserting blocks.

[0008] Preferably, a replacement device is arranged on the surface of the top plate. The replacement device includes a hexagonal groove formed on the surface of the drill bit. A hexagonal block is fixedly connected to the surface of the top plate, and the hexagonal block is inserted into the inner surface of the hexagonal groove. The hexagonal groove can cooperate with the drill bit to receive the hexagonal block.

[0009] Preferably, a sleeve opening is formed on the surface of the hexagonal block and penetrates through the top plate and the chassis. A main rod is fixedly connected to the surface of the hexagonal groove, and the sleeve opening is sleeved on the surface of the main rod. The sleeve opening can cooperate with the hexagonal block to receive the main rod.

[0010] Preferably, a threaded rod is fixedly connected to the surface of the main rod, and a threaded block is threadedly connected to the surface of the threaded rod. The threaded rod can cooperate with the threaded block to limit the top plate and the chassis.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are as follows:

[0012] 1. In the present utility model, by providing a sealing device, when a worker needs to seal the combined structure, the gaps inside the threaded holes are effectively filled. When using the device, the device achieves the purpose of fixing the automotive plastic part by generating frictional force with the automotive plastic part. Place the metal ring on the top plate, place the placement block inside the metal ring on the placement opening, place the pressure plate on the metal ring, the pressure plate pushes the chassis, the chassis pushes the insertion block, and the insertion block inserts into the top plate. When the worker installs the combined structure in the threaded hole, the first rubber pad and the second rubber pad will block the gaps in the threaded hole. By providing the sealing device, the gaps in the threaded hole can be filled by multiple rubber pads, avoiding the situation of shaking during the use of the combined structure. At the same time, the rubber pad itself also has strong frictional force, improving the tightness of the combined structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 FIG. is a three-dimensional structural schematic diagram of a self-tapping screw combined structure for automobiles that can be tightly assembled proposed by the present utility model;

[0014] Figure 2 FIG. is a structural schematic diagram of the sealing device of a self-tapping screw combined structure for automobiles that can be tightly assembled proposed by the present utility model;

[0015] Figure 3 FIG. is a self-tapping screw combined structure for automobiles that can be tightly assembled proposed by the present utility model Figure 2 structural schematic diagram at position A;

[0016] Figure 4 FIG. is a structural schematic diagram of the replacement device of a self-tapping screw combined structure for automobiles that can be tightly assembled proposed by the present utility model;

[0017] Figure 5 FIG. is a self-tapping screw combined structure for automobiles that can be tightly assembled proposed by the present utility model Figure 4 structural schematic diagram at position B.

[0018] In the figure: 1, drill bit; 2, top plate; 3, sealing device; 31, insertion block; 32, chassis; 33, pressure plate; 34, placement block; 35, second rubber pad; 36, metal ring; 37, first rubber pad; 38, placement opening; 4, replacement device; 41, threaded rod; 42, main rod; 43, hexagonal groove; 44, hexagonal block; 45, sleeve opening; 46, threaded block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Please refer to Figures 1-5 , the present utility model provides a technical solution: a self-tapping screw combined structure for automobiles that can be tightly assembled, including a drill bit 1, a top plate 2, and a sealing device 3. The top plate 2 is placed on the surface of the drill bit 1, and the sealing device 3 is provided on the surface of the top plate 2.

[0020] Specifically, the specific settings and functions of its sealing device 3 and replacement device 4 will be described below.

[0021] In this embodiment: The sealing device 3 includes a metal ring 36. The metal ring 36 is sleeved on the surface of the top plate 2. A plurality of annularly arranged placing blocks 34 are fixedly connected to the inner side of the metal ring 36. A second rubber pad 35 is fixedly connected to the surface of the metal ring 36. A first rubber pad 37 is fixedly connected to the surface of the metal ring 36. A plurality of annularly arranged placing openings 38 are formed on the surface of the top plate 2. The placing blocks 34 are inserted into the surfaces of the placing openings 38. A pressure plate 33 is placed on the surface of the metal ring 36.

[0022] Specifically, a chassis 32 is fixedly connected to the surface of the pressure plate 33. The chassis 32 is placed on the surface of the top plate 2. The chassis 32 can cooperate with the pressure plate 33 to support the pressure plate 33.

[0023] Specifically, a plurality of insertion blocks 31 are fixedly connected to the surface of the chassis 32. The plurality of insertion blocks 31 are annularly arranged. The insertion blocks 31 are inserted into the inner surface of the top plate 2.

[0024] In this embodiment: The insertion blocks 31 can cooperate with the chassis 32 to support the insertion blocks 31.

[0025] In this embodiment: A replacement device 4 is provided on the surface of the top plate 2. The replacement device 4 includes a hexagonal groove 43. The hexagonal groove 43 is formed on the surface of the drill bit 1. A hexagonal block 44 is fixedly connected to the surface of the top plate 2. The hexagonal block 44 is inserted into the inner surface of the hexagonal groove 43. The hexagonal groove 43 can cooperate with the drill bit 1 to receive the hexagonal block 44.

[0026] Specifically, a sleeve opening 45 is formed on the surface of the hexagonal block 44. The sleeve opening 45 penetrates through the top plate 2 and the chassis 32. A main rod 42 is fixedly connected to the surface of the hexagonal groove 43. The sleeve opening 45 is sleeved on the surface of the main rod 42.

[0027] In this embodiment: The sleeve opening 45 can cooperate with the hexagonal block 44 to receive the main rod 42.

[0028] Specifically, a threaded rod 41 is fixedly connected to the surface of the main rod 42. A threaded block 46 is threadedly connected to the surface of the threaded rod 41.

[0029] In this embodiment: The threaded rod 41 can cooperate with the threaded block 46 to limit the top plate 2 and the chassis 32.

[0030] Working principle: By setting the sealing device 3, when the worker needs to seal the combined structure, it effectively fills the gaps inside the threaded hole. Using the device, the device achieves the purpose of fixing the automotive plastic part by generating frictional force with the automotive plastic part. Place the metal ring 36 on the top plate 2, place the placement block 34 inside the metal ring 36 on the placement opening 38, place the pressure plate 33 on the metal ring 36, the pressure plate 33 pushes the bottom plate 32, the bottom plate 32 pushes the insertion block 31, and the insertion block 31 is inserted into the top plate 2. When the worker installs the combined structure in the threaded hole, the first rubber pad 37 and the second rubber pad 35 will block the gaps in the threaded hole. By setting the sealing device 3, multiple rubber pads can be used to fill the gaps in the threaded hole, avoiding the situation of the combined structure shaking during use. At the same time, the rubber pad itself also has strong frictional force, improving the tightness of the combined structure. In addition, by setting the replacement device 4, when the worker needs to replace the severely damaged drill bit 1, it effectively facilitates the worker to replace the severely damaged drill bit 1. Using the device, the device achieves the purpose of fixing the automotive plastic part by generating frictional force with the automotive plastic part. Rotate the threaded block 46, the threaded block 46 releases the restraint on the top plate 2, the threaded block 46 disengages from the threaded rod 41, pull the top plate 2 outwards, the top plate 2 drives the hexagonal block 44, and the hexagonal block 44 disengages from the main rod 42 and the hexagonal groove 43. The worker places the top plate 2 on the new drill bit 1. By setting the replacement device 4, it can facilitate the worker to replace the damaged drill bit 1, avoiding the worker having to replace the entire combined structure and saving resources.

Claims

1. A self-tapping screw combination structure for an automobile that can be tightly assembled, comprising a drill bit (1), a top disc (2) and a sealing device (3), characterized in that: The top plate (2) is placed on the surface of the drill bit (1), and the sealing device (3) is arranged on the surface of the top plate (2). The sealing device (3) includes a metal ring (36). The metal ring (36) is sleeved on the surface of the top plate (2). A plurality of annularly arranged placing blocks (34) are fixedly connected to the inner side of the metal ring (36). A second rubber pad (35) is fixedly connected to the surface of the metal ring (36). A first rubber pad (37) is fixedly connected to the surface of the metal ring (36). A plurality of annularly arranged placing openings (38) are formed in the surface of the top plate (2). The placing blocks (34) are inserted into the surfaces of the placing openings (38). A pressure plate (33) is placed on the surface of the metal ring (36).

2. The self-tapping screw combination structure for an automobile capable of being tightly assembled according to claim 1, wherein: A chassis (32) is fixedly connected to the surface of the pressure plate (33). The chassis (32) is placed on the surface of the top plate (2).

3. The self-tapping screw combination structure for an automobile capable of tight assembly according to claim 2, wherein: A plurality of insertion blocks (31) are fixedly connected to the surface of the chassis (32). The plurality of insertion blocks (31) are annularly arranged. The insertion blocks (31) are inserted into the inner surface of the top plate (2).

4. The combined structure of self-tapping screws for automobiles capable of being tightly assembled according to claim 3, characterized in that: A replacement device (4) is arranged on the surface of the top plate (2). The replacement device (4) includes a hexagonal groove (43). The hexagonal groove (43) is formed in the surface of the drill bit (1). A hexagonal block (44) is fixedly connected to the surface of the top plate (2). The hexagonal block (44) is inserted into the inner surface of the hexagonal groove (43).

5. A self-tapping screw combination structure for an automobile that can be tightly assembled according to claim 4, characterized in that: A socket (45) is formed in the surface of the hexagonal block (44). The socket (45) penetrates through the top plate (2) and the chassis (32). A main rod (42) is fixedly connected to the surface of the hexagonal groove (43). The socket (45) is sleeved on the surface of the main rod (42).

6. A self-tapping screw combination structure for an automobile capable of being tightly assembled according to claim 5, characterized in that: A threaded rod (41) is fixedly connected to the surface of the main rod (42). A threaded block (46) is threadedly connected to the surface of the threaded rod (41).

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