CN212479875U - Device for preventing bolt and nut from falling off - Google Patents
Device for preventing bolt and nut from falling off Download PDFInfo
- Publication number
- CN212479875U CN212479875U CN202021297298.4U CN202021297298U CN212479875U CN 212479875 U CN212479875 U CN 212479875U CN 202021297298 U CN202021297298 U CN 202021297298U CN 212479875 U CN212479875 U CN 212479875U
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- draw
- spiral shell
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model discloses a prevent bolt nut device that drops, including bolt and nut, draw-in groove and screw thread have been seted up to the upper portion position surface of bolt, nut threaded connection is in the outside of bolt, the upper end of nut is fixed with the spiral shell crown, the opening has been seted up on the spiral shell crown. This prevent bolt and nut device that drops, nut upper portion increases a spiral shell and encircles to draw-in groove on the spiral shell and encircle, open the draw-in groove simultaneously on the bolt, when twisting the nut to suitable position, can insert a metal card that presets in advance from the draw-in groove department of spiral shell and encircle until inserting the draw-in groove on the bolt in, owing to there is the metal card between nut and bolt, the nut just can't be turned round, just can not drop again.
Description
Technical Field
The utility model relates to a screw technical field specifically is a prevent bolt nut device that drops.
Background
Screws, which are conventionally composed of a nut and a bolt, play a very important role in industrial production and daily life.
According to the existing screw, the screwed and retightened screw cap is likely to fall off from the bolt for a long time, particularly, under the condition of lasting vibration, the probability of falling off of the screw cap is higher, certain potential safety hazard is caused, and technical innovation is performed on the basis of the existing screw according to the situation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prevent bolt and nut device that drops to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent bolt nut device that drops, includes bolt and nut, draw-in groove and screw thread have been seted up to the upper portion position surface of bolt, nut threaded connection is in the outside of bolt, the upper end of nut is fixed with the spiral shell crown, the opening has been seted up on the spiral shell crown.
Preferably, a card is placed in the opening, a clamping structure is arranged between the card and the opening, and the size of the opening is gradually reduced from outside to inside.
Compared with the prior art, the beneficial effects of the utility model are as follows: this prevent bolt and nut device that drops, nut upper portion increases a spiral shell and encircles to draw-in groove on the spiral shell is covered, opens the draw-in groove simultaneously on the bolt, when twisting the nut to suitable position, can insert a metal card that presets in advance from the draw-in groove department of spiral shell and encircle, until inserting to the draw-in groove on the bolt in, owing to there is metal card between nut and bolt, the nut just can't be turned round, just can not drop again, spiral shell is covered for the hexagonal type simultaneously, the box spanner of being convenient for uses.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the top view structure of the spiral crown of the present invention.
In the figure: 1. bolt, 2, draw-in groove, 3, screw thread, 4, nut, 5, spiral shell crown, 6, card, 7, draw-in groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a prevent bolt nut device that drops, including bolt 1, draw-in groove 2, screw thread 3, nut 4, spiral shell crown 5, card 6 and opening 7, draw-in groove 2 and screw thread 3 have been seted up to bolt 1's upper portion position surface, 4 threaded connection of nut in the outside of bolt 1, the upper end of nut 4 is fixed with spiral shell crown 5, opening 7 has been seted up on spiral shell crown 5, card 6 has been placed in the opening 7, and be the block structure between card 6 and the opening 7, opening 7's size reduces from outer to inner gradually, when screwing nut 4 to suitable position, can insert a metal card 6 that presets in advance from 7 departments of draw-in groove of spiral shell crown 5, until inserting to the draw-in groove 2 on bolt 1, owing to have 6 cards of metal card between nut 4 and bolt 1, nut 4 is just unable gyration, just can not drop again.
This prevent bolt nut sheds device when screwing up suitable position to nut 4 on bolt 1, can insert a metal card 6 that presets in advance from draw-in groove 7 department of spiral shell crown 5, until inserting in draw-in groove 2 on bolt 1, continue to screw up nut 4 this moment again, until screwing up, stop screwing up and move, under this condition, owing to there is the metal card, 6 cards are between nut 4 and bolt 1, nut 4 just can't turn round, just can not drop again, this is exactly this is the use of preventing bolt nut sheds device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a prevent bolt and nut device that drops, includes bolt (1) and nut (4), its characterized in that: draw-in groove (2) and screw thread (3) have been seted up to the upper portion position surface of bolt (1), nut (4) threaded connection is in the outside of bolt (1), the upper end of nut (4) is fixed with spiral shell crown (5), opening (7) have been seted up on spiral shell crown (5).
2. The device for preventing the bolt and the nut from falling off as claimed in claim 1, wherein: the card (6) is placed in the opening (7), the clamping structure is arranged between the card (6) and the opening (7), and the size of the opening (7) is gradually reduced from outside to inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021297298.4U CN212479875U (en) | 2020-07-06 | 2020-07-06 | Device for preventing bolt and nut from falling off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021297298.4U CN212479875U (en) | 2020-07-06 | 2020-07-06 | Device for preventing bolt and nut from falling off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212479875U true CN212479875U (en) | 2021-02-05 |
Family
ID=74456920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021297298.4U Expired - Fee Related CN212479875U (en) | 2020-07-06 | 2020-07-06 | Device for preventing bolt and nut from falling off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212479875U (en) |
-
2020
- 2020-07-06 CN CN202021297298.4U patent/CN212479875U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210205 Termination date: 20210706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |