Welding bolt capable of preventing nut from being lost

Abstract

The welding bolt capable of preventing the nut from being lost comprises a screw rod, a nut and the nut, a mounting groove is formed in the screw rod, a through communicating hole is formed in the center of the nut and communicated with the mounting groove, a base is fixed in the mounting groove, a rotating rod arranged in the axial direction is arranged in the mounting groove, and the nut is arranged in the rotating rod. One end of the rotating rod is rotationally connected to the base, the other end of the rotating rod extends outwards to serve as a screwing end, an ejection opening communicated with the mounting groove is formed in the periphery of the screw rod, an ejection rod is arranged in the ejection opening, and the ejection rod is ejected out of the ejection opening through rotation of the rotating rod so as to support and limit the nut. The utility model has the following advantages and effects: after the nut is loosened, the nut can be prevented from being separated from the screw rod, and safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a welding bolt capable of preventing a nut from being lost. Background Art

[0002] A bolt usually consists of two parts, the upper part is the nut, which is used to tighten or unscrew the bolt when in use, and the lower part is the screw, which is a cylinder with threads on the outer surface. When in use, it is usually combined with a nut, and the bolt is fixed or removed through the threaded connection between the nut and the screw. It is widely used in the connection and fixation of mechanical parts.

[0003] For example, a Chinese patent document with announcement number CN217761649U discloses a three-point welding bolt for rust-proof household appliances, including a bolt head and a rod body, wherein the rod body is fixedly connected to the bolt head, and the side of the bolt head close to the rod body is a welding surface, and the surface of the welding surface is circumferentially fixed with three convex welding points, and the outer surface of the rod body is fixedly sleeved with a reinforcement portion, and the reinforcement portion is fixedly connected to the bolt head, and the convex welding point is a hemisphere, and the height of the hemisphere is greater than the height of the reinforcement portion.

[0004] In the above technical solution, by setting the convex welding point, during welding, the convex welding point can be made to contact with the home appliance parts, and a gap is left between the home appliance parts and the bolt head, which is convenient for welding the bolt head to the home appliance parts, ensuring the uniformity of the distribution of the welding points, and the same tightening force for each welding point, avoiding the occurrence of cold welding.

[0005] However, during long-term use, the nut fastened to the rod body may fall off the rod body and be lost due to vibration, which may easily lead to safety accidents. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a welding bolt that prevents the nut from being lost, which can prevent the nut from detaching from the screw rod after the nut is loosened, thereby avoiding the occurrence of safety accidents.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding bolt for preventing nut from being lost, comprising a screw rod, a nut and a nut, wherein the screw rod is provided with a mounting groove, the nut has a penetrating connecting hole in the center, the connecting hole is connected with the mounting groove, a base is fixed in the mounting groove, a rotating rod arranged axially is provided in the mounting groove, one end of the rotating rod is rotatably connected to the base, and the other end extends outward as a screwing end, an ejection outlet connected with the mounting groove is provided on the outer periphery of the screw rod, an ejection rod is provided in the ejection outlet, and the ejection rod is ejected from the ejection outlet by the rotation of the rotating rod to support and limit the nut.

[0008] The utility model is further configured as follows: a driving disk is fixedly sleeved on the outer periphery of the rotating rod, and an arc-shaped guide hole is provided on the driving disk, and the arc-shaped guide hole is arranged in a radial direction. The peripheral wall of the ejection rod abuts against the ejection outlet so that the ejection rod and the ejection outlet are coupled to each other, and a driving rod is provided on the side of the ejection rod facing the driving disk, and the end of the driving rod is adapted to the arc-shaped guide hole so that the end of the driving rod is coupled to the arc-shaped guide hole.

[0009] The utility model is further configured as follows: the twisting end comprises a connecting portion and a twisting portion, the connecting portion and the twisting portion are integrally arranged, the twisting portion extends out of the connecting hole, and the connecting hole is provided with a twisting groove adapted to the head of the hardware tool.

[0010] The utility model is further configured as follows: the twisting portion is adapted to the communicating hole so that the twisting portion and the communicating hole are coupled to each other.

[0011] The utility model is further configured as follows: a first pin hole is provided on the nut, a second pin hole is provided on the connecting portion, the second pin hole can be opposite to the first pin hole, and a cotter pin is provided between the second pin hole and the first pin hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Since an ejector rod that can be rotated and ejected by a rotating rod is provided, after the nut is screwed into the screw rod, the ejector rod is rotated by twisting the ejector rod so that the ejector rod can be ejected outward from the ejection outlet, so that when the nut is detached from the screw rod, the nut is supported and limited, and the loose nut is prevented from detaching from the screw rod. Therefore, the technical problem in the prior art that the nut is easily detached from the screw rod and lost after being vibrated is effectively solved, and the detached nut can be prevented from being stuck in the running equipment, causing damage to the equipment and causing safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the explosion structure of the first embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the second embodiment of the present utility model. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] Embodiment 1

[0020] like Figure 1 to Figure 2 As shown, this embodiment discloses a welding bolt for preventing a nut from being lost, comprising a screw rod 1, a nut 2 and a nut 3. A mounting groove 101 is provided in the screw rod 1, a connecting hole 21 is provided through the center of the nut 2, and the connecting hole 21 is connected to the mounting groove 101. A base 4 is fixed in the mounting groove 101, and a rotating rod 5 arranged along the axial direction is provided in the mounting groove 101. One end of the rotating rod 5 is rotatably connected to the base 4, and the other end extends outward as a screwing end. A top outlet connected to the mounting groove 101 is provided on the outer periphery of the screw rod 1 An ejector rod 6 is provided in the ejector outlet, and the ejector rod 6 is ejected from the ejector outlet by rotating the rotating rod 5 to support and limit the nut 3. After the nut 3 is screwed into the screw rod 1, the ejector rod 6 is rotated by twisting the ejector rod 6 so that the ejector rod 6 can be ejected outward from the ejector outlet, so as to support and limit the nut 3 when the nut 3 is detached from the screw rod 1, so as to prevent the loosened nut 3 from detaching from the screw rod 1, thereby preventing the detached nut 3 from being stuck in the running equipment to cause damage to the equipment and cause a safety accident.

[0021] In this embodiment, the structure in which the ejection rod 6 is ejected by rotating the rotating rod 5 is that a driving disk 7 is fixedly mounted on the outer periphery of the rotating rod 5, and a penetrating arc-shaped guide hole 71 is provided on the driving disk 7. The arc-shaped guide hole 71 is arranged in the radial direction, and the peripheral wall of the ejection rod 6 abuts against the ejection outlet, so that the ejection rod 6 and the ejection outlet are coupled to each other, and a driving rod 9 is provided on the side of the ejection rod 6 facing the driving disk 7, and the end of the driving rod 9 is adapted to the arc-shaped guide hole 71, so that the end of the driving rod 9 is coupled to the arc-shaped guide hole 71. After the rotating rod 5 rotates, the driving disk 7 can rotate with the rotating rod 5. At this time, the driving rod 9 coupled to the arc-shaped guide hole 71 can move along the arc-shaped guide hole 71 under the guiding action of the arc-shaped guide hole 71, so that the driving rod 9 can move along the quasi-diameter direction of the driving disk 7, so that under the guiding action of the ejection outlet on the ejection rod 6, the ejection rod 6 can be ejected or retracted from the ejection outlet. Therefore, the use of this structure makes the ejection or retraction of the ejection rod 6 more convenient and quick;

[0022] In addition, the specific structure of the twisting end includes a connecting portion 51 and a twisting portion 52, and the connecting portion 51 and the twisting portion 52 are integrally arranged, and the twisting portion 52 extends to the outside of the connecting hole 21. The connecting hole 21 is provided with a twisting groove 521 that is compatible with the head of the hardware tool. By setting the twisting groove 521, the rotating rod 5 can be twisted and rotated with the help of a hardware tool that is compatible with the twisting groove 521, so that the twisting of the rotating rod 5 is more labor-saving. Therefore, the twisting groove 521 can be specifically a straight, cross or hexagonal shape, so that it can be adapted to different hardware tools. In addition, the twisting portion 52 is adapted to the connecting hole 21 so that the twisting portion 52 and the connecting hole 21 are coupled with each other, so that the twisting portion 52 and the connecting hole are in contact with each other, and when a movement trend is generated between the two, friction can be generated, thereby reducing the malfunction of the rotating rod 5.

[0023] Embodiment 2

[0024] like Figure 3 As shown, the difference of this embodiment is that a first pin hole is further provided on the nut 2, and a second pin hole is provided on the connecting part 51. The second pin hole can be opposite to the first pin hole. A cotter pin 8 is provided between the second pin hole and the first pin hole. After the ejection rod 6 is ejected into place by rotating the rotating rod 5, the second pin hole can be opposite to the second pin hole. At this time, by inserting the cotter pin 8 into the first pin hole and the second pin hole, the rotation of the rotating rod 5 can be limited, so as to further avoid malfunction of the rotating rod 5, thereby ensuring the stability of the ejection of the ejection rod 6.

[0025] Finally, it should be noted that the specific processing steps of the welding bolts in this scheme are: first, a half-embryo with a cavity is formed by injection molding of a mold. After the two half-embryos are welded, the adjacent cavities form a mounting groove 101. After the half-embryos are injection molded, the top outlet is processed by a milling machine, and then the base 4 is welded in the cavity, and the rotating rod 5 is connected to the base 4. Then the other half-embryos can be welded, and the surface is polished smooth after welding. The surface can be processed into threads by a tapping machine to complete the processing of the screw 1. Finally, the nut 2 is welded to the screw 1 to complete the overall processing.

[0026] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A welding bolt for preventing nut loss, characterized in that: It includes a screw, a nut and a nut. The screw is provided with a mounting groove. The nut is provided with a penetrating connecting hole in the center. The connecting hole is connected to the mounting groove. A base is fixed in the mounting groove. A rotating rod arranged along the axial direction is provided in the mounting groove. One end of the rotating rod is rotatably connected to the base, and the other end extends outward as a screwing end. An ejection outlet connected to the mounting groove is provided on the outer periphery of the screw. An ejection rod is provided in the ejection outlet. The ejection rod is ejected from the ejection outlet by the rotating rod to support and limit the nut.

2. A welding bolt for preventing nut loss according to claim 1, characterized in that: A driving disk is fixedly mounted on the outer periphery of the rotating rod, and an arc-shaped guide hole is provided on the driving disk, and the arc-shaped guide hole is arranged in a radial direction. The peripheral wall of the ejection rod abuts against the ejection outlet so that the ejection rod and the ejection outlet are coupled to each other. A driving rod is provided on the side of the ejection rod facing the driving disk, and the end of the driving rod is adapted to the arc-shaped guide hole so that the end of the driving rod is coupled to the arc-shaped guide hole.

3. A welding bolt for preventing nut loss according to claim 1, characterized in that: The twisting end comprises a connecting portion and a twisting portion, the connecting portion and the twisting portion are integrally arranged, the twisting portion extends out of the connecting hole, and the connecting hole is provided with a twisting groove matched with the head of the hardware tool.

4. A welding bolt for preventing nut loss according to claim 3, characterized in that: The twisting portion is matched with the communicating hole so that the twisting portion and the communicating hole are coupled with each other.

5. A welding bolt for preventing nut loss according to claim 4, characterized in that: The nut is provided with a first pin hole that penetrates through it, and the connecting portion is provided with a second pin hole that penetrates through it. The second pin hole can be opposite to the first pin hole, and a cotter pin is provided between the second pin hole and the first pin hole.

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