CN206770358U - A kind of anti-drop bolt - Google Patents

Abstract

The utility model discloses a kind of anti-drop bolt, it is related to technical field of fastening.The utility model includes bolt head, shank of bolt, groove and anti-drop device, bolt head and shank of bolt vertical connection, external screw thread is provided with shank of bolt, groove is arranged on the end face of shank of bolt, bolt head is located at the other end of shank of bolt, anti-drop device includes buckle, is engaged by clamping with the cylindrical connecting rod snapped connection and the anti-drop head being connected with connecting rod one end, buckle with groove.The utility model is simple in construction, easy to use, by setting groove and anti-drop device, can prevent nut from coming off in use, solves the problems, such as during screw bolt and nut cooperation because vibration easily comes off.

Description

An anti-falling bolt

technical field

The utility model relates to the technical field of fasteners, in particular to an anti-falling bolt.

Background technique

A bolt is a commonly used fastener that can be used in conjunction with a nut to securely connect devices between the bolt and the nut. However, under some conditions of vibration, the nut on the bolt will loosen and cause it to fall off. Adverse effects on connected structures or components are prone to accidents.

Utility model content

The technical problem to be solved by the utility model is to provide a simple structure, easy to use, anti-falling bolt that can prevent the nut from falling off during use, and solve the problem of easy falling off due to vibration when the bolt and nut are matched. The problem.

The technical solution adopted by the utility model is: an anti-falling bolt, including a bolt head, a bolt shank, a groove and an anti-off device for preventing the nuts arranged on the bolt shank from falling off, the bolt head and the bolt shank The bolt rods are vertically connected, the bolt rods are provided with external threads, the grooves are arranged on one end surface of the bolt rods, the bolt heads are located at the other end of the bolt rods, and the anti-loosening device includes Buckle, a cylindrical connecting rod connected with the buckle, and an anti-off head connected with one end of the connecting rod, the buckle is snap-fitted with the groove.

Preferably, the groove includes a hemispherical locking groove and a cylindrical connection groove communicating with the locking groove.

Preferably, the buckle includes a bullet, and the bullet is provided with a shrapnel, and the shrapnel is engaged and fixed with the slot.

Preferably, the shrapnel is an arc-shaped shrapnel.

Preferably, the number of the shrapnel is four and they are evenly distributed along the circumference of the warhead.

Preferably, the length of the bolt rod is 15mm-45mm.

Compared with the prior art, the beneficial effect of adopting the above technical solution lies in that the utility model has a simple structure and is easy to use, and the nuts can be prevented from falling off during use by setting the groove and the anti-loosening device, which solves the problem of bolts and nuts. There is a problem that it is easy to fall off due to vibration when mating.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a perspective view of the buckle in Fig. 1 .

Fig. 3 is a right view of the buckle in Fig. 1 .

In the figure: 1. Bolt head; 2. Bolt shaft; 3. Groove; 31. Card slot; 32. Connection groove; 4. Anti-off device; 5. External thread; 6. Buckle; 61. Warhead; shrapnel; 7, connecting rod; 8, anti-off head.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

It should be noted that the terms "length", "width", "height", "thickness", "top", "bottom", "front", "back", "left", "right", "vertical" , "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for It is convenient to describe the utility model and simplify the description, but not to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the utility model.

It should also be noted that terms such as "installation", "connection", "connection", "fixation" and "setup" should be understood in a broad sense, for example, it may be a fixed connection or It is a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Referring to Fig. 1 to Fig. 3, an embodiment of a fall-off prevention bolt provided by the utility model is now described. An anti-falling bolt, comprising a bolt head 1, a bolt shank 2, a groove 3 and an anti-off device 4 for preventing the nuts arranged on the bolt shank 2 from falling off, the bolt head 1 and the bolt shank 2 vertical connection, the bolt rod 2 is provided with an external thread 5, the groove 3 is arranged on one end surface of the bolt rod 2, the bolt head 1 is located at the other end of the bolt rod 2, and the anti The release device 4 includes a buckle 6, a cylindrical connecting rod 7 connected to the buckle 6 and an anti-off head 8 connected to one end of the connecting rod 7, and the buckle 6 is engaged with the groove 3 .

The bolt head 1 is a hexagonal bolt head. When in use, the bolt head 1 is first clamped by a wrench so that the bolt rod 2 is screwed into the threaded hole in the fastener, and then the nut is screwed onto the bolt rod 2, and finally the The buckle 6 on the anti-off device 4 snaps into the groove 3, so that the nut can be prevented from falling off during use.

Further, please refer to FIG. 1 , as one of the specific embodiments provided by the present invention, the groove 3 includes a hemispherical locking groove 31 and a cylindrical connecting groove 32 communicating with the locking groove 31 . The locking groove 31 is set in a hemispherical shape, and the connecting groove 32 is set in a cylindrical shape, which will form a boss, which can better play a role in strengthening the connection.

Further, please refer to Fig. 1 to Fig. 3 , as one of the specific embodiments provided by the present utility model, the buckle 6 includes a bullet 61, and the bullet 61 is provided with a shrapnel 62, and the shrapnel 62 is connected with the buckle The groove 31 is clamped and fixed. The elastic piece 62 can be snapped into the slot 31 to better strengthen the connection.

Further, please refer to FIG. 2 , as one of the specific embodiments provided by the present invention, the elastic piece 62 is an arc-shaped elastic piece. The arc-shaped shrapnels are all bent inwardly, and the connecting rod 7 is provided with escape grooves corresponding to the ends of the arc-shaped shrapnel.

Further, please refer to FIG. 3 , as one of the specific embodiments provided by the present invention, the number of the elastic pieces 62 is four and uniformly distributed along the circumferential direction of the bullet 61 .

Further, please refer to FIG. 1 , as one of the specific embodiments provided by the present invention, the length of the bolt rod 2 is 15mm-45mm. If the length of the bolt shaft 2 is too long, it will cause waste of materials. If the length of the bolt shaft 2 is too short, it will not be fastened. Therefore, the length of the bolt shaft 2 is 15mm-45mm. After testing, the length of the bolt shaft 2 35mm works best.

After adopting the above-mentioned technical scheme, the beneficial effect is that the utility model has simple structure and is easy to use. By setting the groove 3 and the anti-loosening device 4, the nut can be prevented from falling off during use, and the problem caused by the bolt and the nut when mating is solved. The problem that the vibration is easy to fall off.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and its concept should be covered within the protection scope of the present utility model.

Claims (6)

1. An anti-falling bolt, characterized in that: it includes a bolt head (1), a bolt shank (2), a groove (3) and an anti-off bolt for preventing the nuts arranged on the bolt shank (2) from falling off. device (4), the bolt head (1) is vertically connected to the bolt shaft (2), the bolt shaft (2) is provided with an external thread (5), and the groove (3) is provided on the On one end face of the bolt rod (2), the bolt head (1) is located at the other end of the bolt rod (2), and the anti-off device (4) includes a buckle (6), and the buckle ( 6) A connected cylindrical connecting rod (7) and an anti-off head (8) connected to one end of the connecting rod (7), and the buckle (6) snaps into the groove (3). 2. An anti-falling bolt according to claim 1, characterized in that: the groove (3) includes a hemispherical slot (31) and a cylindrical connection slot communicating with the slot (31) (32). 3. An anti-falling bolt according to claim 2, characterized in that: the buckle (6) includes a bullet (61), and the bullet (61) is provided with a shrapnel (62), and the shrapnel ( 62) is clamped and fixed with the card slot (31). 4. The anti-falling bolt according to claim 3, characterized in that: the elastic piece (62) is an arc-shaped elastic piece. 5 . The anti-falling bolt according to claim 3 , characterized in that: the number of the shrapnel ( 62 ) is four and they are evenly distributed along the circumferential direction of the bullet ( 61 ). 5 . 6. The anti-falling bolt according to claim 1, characterized in that: the length of the bolt shaft (2) is 15mm-45mm.