CN210509887U

CN210509887U - Novel pull-out bolt

Info

Publication number: CN210509887U
Application number: CN201921166952.5U
Authority: CN
Inventors: 朱俊
Original assignee: CETC 14 Research Institute
Current assignee: CETC 14 Research Institute
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-05-12
Anticipated expiration: 2029-07-24

Abstract

The utility model discloses a novel pulling bolt, which comprises a screw rod and a bolt head; the screw rod is connected with the bolt head; the bolt head is cylindrical, and is internally provided with an inner hexagonal groove or other structures matched with the standard disassembling tool head. The screw is internally provided with internal threads, and the front part of the internal threads is provided with an internal transition groove for radial adjustment; the screw rod is externally cylindrical, and a retainer groove is arranged on the outside of the screw rod. The utility model discloses a specific technical scheme be different from other fastening bolt, its fastening end cylinder adopts the internal thread form, and the design of cylinder outside has the recess that can adjust and pull out the interval. The utility model discloses can effectual improvement plug module fastening reliability in adverse vibration environment, can solve the pulling-up problem of module again, simplify module mounting structure simultaneously, improve volume utilization, alleviate module weight.

Description

Novel pull-out bolt

Technical Field

The utility model relates to a bolt especially relates to a bolt of effect is pulled out in area.

Background

At present, a lot of electronic equipment adopts a modular design method, and a module generally adopts a plug-in mode in the installation mode. The fastening form of the module generally takes:

1) the module front panel is fastened with the chassis or the guide rail by fastening screws, and the front part of the module is provided with a handle, which has the following disadvantages: the handle occupies effective space and increases the weight of the module, and the module is not easy to pull out.

2) The front part of the module is provided with an independent extractor, and the two sides of the module are provided with locking mechanisms which are locked with the chassis or the guide rail, and the module has the following defects: the extractor installation position occupies more effective space, the structure is relatively complex, and the locking mechanism has the risk of loosening in the severe vibration environment.

3) The module front part is provided with an independent extractor, and the front panel of the module adopts a form that a loose-proof screw is fastened with a chassis or a guide rail, and the defects are that: the extractor installation position occupies more effective space, the structure is relatively complex, and the screw fastening force is relatively weak when the extractor is loosened.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the invention provides a fastening bolt for a plug-in module, which can resist severe vibration and is convenient to pull up, and simultaneously can simplify the structure of the plug-in module, improve the space utilization rate of the module and reduce the weight of the module.

In order to solve the above problem, the utility model adopts the following technical scheme: namely, the novel pulling bolt is provided, and comprises a screw rod and a bolt head; the screw rod is connected with the bolt head; the bolt head is cylindrical, and is internally provided with an inner hexagonal groove or other structures matched with the standard disassembling tool head. The screw is internally provided with internal threads, and the front part of the internal threads is provided with an internal transition groove for radial adjustment; the screw rod is externally cylindrical, and a retainer groove is arranged on the outside of the screw rod.

The diameter of the bolt head cylinder is preferably larger than that of the outer cylinder of the screw, so that the bolt head is more portable to mount and use, and the fastening effect is better. The diameter of the cylinder of the bolt head can be equal to that of the outer cylinder of the screw rod, and only a gasket needs to be additionally arranged during installation.

The retainer ring groove is arranged at one section of the screw rod with internal threads, so that the plug-in module can be more effectively pulled out.

The number of the retainer ring grooves is more than or equal to 1, the retainer ring grooves are used for installing the retainer rings, the functions of pulling and axially adjusting are achieved, the retainer rings can be placed in the retainer ring grooves according to different selectivity of the plug-in module, and universality is better achieved.

Compared with the prior art, the utility model, following beneficial effect has: the special technical scheme adopted by the invention is different from other fastening bolts, the fastening end cylinder of the fastening bolt adopts an internal thread form, and the outer side of the cylinder is provided with a groove capable of adjusting the pulling-up distance. The utility model discloses can effectual improvement plug module fastening reliability in adverse vibration environment, can solve the pulling-up problem of module again, simplify module mounting structure simultaneously, improve volume utilization, alleviate module weight.

Drawings

Fig. 1 is a schematic structural view of a novel pull-out bolt.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a schematic view of a mounting structure of the novel pull-out bolt.

Wherein, 1 is an inner hexagonal groove, 2 is a screw rod, 3 is a retainer groove, 4 is a bolt head, 5 is an inner transition groove, and 6 is an internal thread; the device comprises a plugging module 7, a retainer ring 8, a novel pulling bolt 9, a stud 10 on a case, a gasket 11, a nut 12 and a case 13.

Detailed Description

The present invention will be further explained below.

As shown in fig. 1 and 2, the utility model provides a novel pulling bolt, which comprises a screw rod 2 and a bolt head 4; the screw rod 2 is connected with the bolt head 4; the diameter of the cylinder of the bolt head 4 is directly larger than the diameter of the outer cylinder of the screw rod 2.

The bolt head 4 is cylindrical, and is internally provided with an inner hexagonal wrench hole (an inner hexagonal groove 1) which meets the national standard; an internal thread 6 is arranged in the screw rod 2, and an internal transition groove 5 with a radial adjusting function is arranged at the front part of the internal thread 6; the screw rod 2 is externally cylindrical, 2 retainer grooves 3 are arranged on the outside, and the retainer grooves 3 are arranged on a section which is provided with internal threads 6 outside the screw rod 2.

As shown in fig. 3, the novel installation and locking method of the pull-out bolt: a novel pulling bolt is directly inserted into a through hole on the front panel of the plugging module 7, and then 2 retainer rings 8 are arranged on the retainer ring groove 3; after the plugging module 7 is placed into the plug box or the guide rail, the stud 10 on the case is plugged into the inner transition groove 5, and the novel pulling bolt is locked with the case or the guide rail by using the inner hexagonal wrench handle.

The novel pulling mode of pulling the bolt is as follows: when the module will be extracted, loosen neotype earlier and pull out bolt 9, at neotype play pull out bolt 9 gradually toward the in-process of screwing out outward, retaining ring 8 withstands the reverse side of plug module 7 front panel, through the past rotatory strength of screw thread 6, retaining ring 8 gradually plays the effect of pulling out to the ejecting quick-witted case of plug module 7 when continuing neotype play to pull out bolt 9.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The novel pulling bolt is characterized by comprising a screw rod (2) and a bolt head (4); the screw rod (2) is connected with the bolt head (4); the bolt head (4) is cylindrical and is internally provided with an inner hexagonal groove (1); an internal thread (6) is arranged in the screw rod (2), and an internal transition groove (5) is arranged at the front part of the internal thread (6); the screw rod (2) is cylindrical outside and is provided with a retainer groove (3).

2. A new type of jack-up bolt according to claim 1, characterized in that the diameter of the cylindrical body of the bolt head (4) is greater than the diameter of the outer cylindrical body of the screw (2).

3. A new type of draw bolt according to claim 1, characterized in that the retainer groove (3) is arranged in a section of the shank (2) having an internal thread (6).

4. A new type of draw bolt according to claim 1, characterized in that the number of retainer grooves (3) is 1 or more.