CN216691814U - Bolt with anti-separation cylindrical head - Google Patents
Bolt with anti-separation cylindrical head Download PDFInfo
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- CN216691814U CN216691814U CN202122561117.5U CN202122561117U CN216691814U CN 216691814 U CN216691814 U CN 216691814U CN 202122561117 U CN202122561117 U CN 202122561117U CN 216691814 U CN216691814 U CN 216691814U
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- bolt body
- bolt
- annular tooth
- connecting groove
- connecting block
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Abstract
The utility model discloses a cylindrical head anti-drop bolt, which relates to the technical field of cylindrical bolts and comprises a bolt cap and a rear bolt body fixedly arranged in the middle of one side surface of the bolt cap, wherein one end surface of the rear bolt body is connected with a front bolt body in a fitting manner, a regular polygonal connecting groove is arranged inside the rear bolt body, a connecting block matched with the connecting groove is arranged in an inner cavity of the connecting groove, fillets are arranged at the corners of the connecting groove and the connecting block, and a gap is reserved between the inner side wall of the connecting groove and the outer side wall of the connecting block. According to the anti-falling device, one side surface of each of the first annular tooth and the second annular tooth is obliquely arranged, and the first annular tooth and the second annular tooth are meshed and connected, so that the first annular tooth and the second annular tooth are mutually extruded, friction between threads and threaded holes on the outer sides of the rear bolt body and the front bolt body is increased, and further, the rotation of the rear bolt body is hindered, and therefore the anti-falling device is ensured to have a good anti-falling effect.
Description
Technical Field
The utility model relates to the technical field of cylindrical bolts, in particular to a cylindrical head anti-disengagement bolt.
Background
A socket head cap bolt is a common locking member used to lock and secure the layered structure body. The inner hexagonal socket head bolt is widely applied, and the screw penetrates through the through hole of the layer to be fixed and is embedded into the screw hole of the locking layer, so that the layer to be fixed and the locking layer are tightly connected.
However, at present, after the existing cylindrical head bolt is installed and positioned, looseness is easy to happen, and therefore the fastening effect is poor. Therefore, it is necessary to solve the above problems by inventing the anti-slip bolt with a cylindrical head.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cylindrical head anti-falling bolt so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the cylinder head anti-disengagement bolt comprises a bolt cap and a rear bolt body fixedly installed in the middle of one side face of the bolt cap, wherein one end face of the rear bolt body is connected with a front bolt body in a fitting mode, a regular polygonal connecting groove is formed in the rear bolt body, a connecting block matched with the connecting groove is arranged in an inner cavity of the connecting groove, fillets are arranged at the corner of the connecting groove and the corner of the connecting block, a gap is reserved between the inner side wall of the connecting groove and the outer side wall of the connecting block, a connecting column is fixedly connected to the middle of one side face of the connecting block, one end of the connecting column movably penetrates through the inner wall of one end of the connecting groove and is fixedly connected with one end face of the front bolt body, one end face of the rear bolt body and one end face of the front bolt body are respectively provided with a first annular tooth and a second annular tooth, and the first annular tooth and the second annular tooth are obliquely arranged on one side face, and the first annular tooth and the second annular tooth are in meshed connection.
Preferably, the inner chamber of spread groove is provided with thrust spring, thrust spring's both ends laminate with the another side of connecting block and the other end inner wall of spread groove respectively.
Preferably, the other side surface of the bolt cap is provided with an inner hexagonal hole, and the other end surface of the front bolt body is provided with a dome.
Preferably, the outer side wall of the rear bolt body and the outer side wall of the front bolt body are both provided with the same threads, a corner of the outer side wall of the bolt cap is provided with a fillet, and the outer side wall of the bolt cap is provided with friction lines.
The utility model has the technical effects and advantages that:
1. according to the anti-falling device, the front bolt body is attached to one end face of the rear bolt body, the first annular tooth and the second annular tooth are arranged on one end face of the rear bolt body and one end face of the front bolt body respectively, one side face of each of the first annular tooth and the second annular tooth is obliquely arranged, and the first annular tooth and the second annular tooth are meshed and connected with each other;
2. according to the anti-falling device, the connecting groove is formed in the rear bolt body, the connecting block matched with the connecting groove is arranged in the inner cavity of the connecting groove, and the connecting block is fixedly connected with the front bolt body through the connecting column, so that the rear bolt body and the front bolt body are mutually connected and cannot be separated and fall off, the thrust spring is further arranged in the inner cavity of the connecting groove and provides thrust, and the anti-falling effect of the anti-falling device after installation is further improved.
Drawings
Fig. 1 is a perspective view of the overall structure of the present invention.
Fig. 2 is an exploded view of the overall structure of the present invention.
Fig. 3 is a schematic perspective sectional view of the rear plug structure of the present invention.
Fig. 4 is a perspective view of the front key structure of the present invention.
In the figure: 1. a bolt cap; 2. a rear key body; 3. a front key body; 4. connecting grooves; 5. connecting blocks; 6. connecting columns; 7. a first annular tooth; 8. a second ring-shaped tooth; 9. a thrust spring; 10. an inner hexagonal hole; 11. a dome.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a cylindrical head anti-falling bolt as shown in figures 1-4, which comprises a bolt cap 1 and a rear bolt body 2 fixedly arranged in the middle of one side surface of the bolt cap 1, wherein one end surface of the rear bolt body 2 is connected with a front bolt body 3 in a fitting manner, the other side surface of the bolt cap 1 is provided with a hexagon socket 10, the other end surface of the front bolt body 3 is provided with a dome 11, the dome 11 is arranged to facilitate the device to be inserted into a threaded hole, the outer side wall of the rear bolt body 2 and the outer side wall of the front bolt body 3 are both provided with the same threads, therefore, when the rear bolt body 2 and the front bolt body 3 synchronously rotate, the device can be smoothly screwed into the threaded hole, the corner of the outer side wall of the bolt cap 1 is provided with a round angle, and the outer side wall of the bolt cap 1 is provided with friction grains.
Specifically, the inner chamber at rear portion bolt 2 is provided with regular polygon's spread groove 4, the inner chamber of spread groove 4 be provided with spread groove 4 looks adaptation connecting block 5, the corner of spread groove 4 and the corner of connecting block 5 all are provided with the fillet, leave the gap between the inside wall of spread groove 4 and the lateral wall of connecting block 5, and the gap between spread groove 4 and the connecting block 5 is less, consequently can follow self axial and take place relative rotation in certain angle between rear portion bolt 2 and the anterior bolt 3.
Secondly, a connecting column 6 is fixedly connected in the middle of one side surface of the connecting block 5, one end of the connecting column 6 movably penetrates through the inner wall of one end of the connecting groove 4 and is fixedly connected with one end surface of the front bolt body 3, therefore, the connecting block 5 is fixedly connected with the front bolt body 3, and the connecting block 5 can only move in the inner cavity of the connecting groove 4, therefore, when the rear bolt body 2 rotates, the front bolt body 3 can be driven to rotate through the connection of the connecting block 5 and the connecting column 6, a first annular tooth 7 and a second annular tooth 8 are respectively arranged on one end surface of the rear bolt body 2 and one end surface of the front bolt body 3, one side surface of each of the first annular tooth 7 and the second annular tooth 8 is obliquely arranged, and the first annular tooth 7 and the second annular tooth 8 are meshed and connected, therefore, when the rear bolt body 2 rotates forwards, the front bolt body 3 can be driven to rotate synchronously through the meshing connection of the first annular tooth 7 and the second annular tooth 8; when the rear bolt body 2 rotates reversely, one side surface of each of the first annular tooth 7 and the second annular tooth 8 is obliquely arranged, so that the rear bolt body 2 and the front bolt body 3 can be slightly separated by mutual extrusion of the first annular tooth 7 and the second annular tooth 8 until the connecting groove 4 and the connecting block 5 are mutually clamped, the front bolt body 3 can be driven to rotate again, namely, when the rear bolt body 2 rotates reversely, the rear bolt body 2 is firstly slightly separated from the front bolt body 3, and then the front bolt body 3 is driven to rotate in a delayed manner; therefore, after the device is inserted into the threaded hole, the distance between the rear bolt body 2 and the front bolt body 3 is fixed and cannot be changed, so that the rear bolt body 2 cannot rotate reversely to be separated from the threaded hole, and the device has a good anti-falling effect.
Further, the inner chamber of spread groove 4 is provided with thrust spring 9, and thrust spring 9's both ends laminate with the another side of connecting block 5 and the other end inner wall of spread groove 4 respectively, and this device inserts the threaded hole back, and thrust spring 9 provides thrust and can make the trend that has alternate segregation between rear portion bolt 2 and the anterior bolt 3 to increased the frictional force between the screw thread on rear portion bolt 2 and the anterior bolt 3 and the threaded hole inner wall, further improved the anticreep effect of this device.
The working principle of the utility model is as follows:
when the device is used, firstly, the dome 11 is inserted into the threaded hole, then the bolt cap 1 is rotated to drive the rear bolt body 2 to rotate, and then the front bolt body 3 is driven to rotate through the connection between the connecting groove 4 and the connecting block 5 until the front bolt body 3 is completely inserted into the threaded hole;
then, pressure is applied along the axial direction of the rear bolt body 2, so that the rear bolt body 2 and the front bolt body 3 are mutually attached, namely the first annular tooth 7 is meshed with the second annular tooth 8, the rear bolt body 2 is continuously rotated and the front bolt body 3 is driven to synchronously rotate, and then the rear bolt body 2 and the front bolt body 3 can be synchronously screwed into the threaded hole;
after this device installation, if the reverse rotation takes place for rear portion bolt body 2, because first annular tooth 7 and second annular tooth 8 all have a side slope to set up, consequently first annular tooth 7 and second annular tooth 8 extrude each other and can make rear portion bolt body 2 and front portion bolt body 3 have the trend of slight separation this moment, thereby make the frictional force increase between the screw thread on rear portion bolt body 2 and the front portion bolt body 3 and the threaded hole inner wall, the thrust of deuterogamy thrust spring 9, thereby can effectively improve the anticreep effect of this device.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (4)
1. The cylinder head anti-disengagement bolt comprises a bolt cap (1) and a rear bolt body (2) fixedly installed at the middle part of one side surface of the bolt cap (1), and is characterized in that: one end face of the rear bolt body (2) is in fit connection with a front bolt body (3), a regular polygonal connecting groove (4) is arranged inside the rear bolt body (2), a connecting block (5) matched with the connecting groove (4) is arranged in an inner cavity of the connecting groove (4), round corners of the connecting groove (4) and corners of the connecting block (5) are provided with round corners, a gap is reserved between the inner side wall of the connecting groove (4) and the outer side wall of the connecting block (5), a connecting column (6) is fixedly connected to the middle of one side face of the connecting block (5), one end of the connecting column (6) movably penetrates through the inner wall of one end of the connecting groove (4) and is fixedly connected with one end face of the front bolt body (3), a first annular tooth (7) and a second annular tooth (8) are arranged on one end face of the rear bolt body (2) and one end face of the front bolt body (3) respectively, the first annular tooth (7) and the second annular tooth (8) are both provided with one side surface which is inclined, and the first annular tooth (7) and the second annular tooth (8) are meshed and connected.
2. The cylinder head anti-loosening bolt according to claim 1, wherein: the inner chamber of spread groove (4) is provided with thrust spring (9), the both ends of thrust spring (9) are laminated with the another side of connecting block (5) and the other end inner wall of spread groove (4) respectively.
3. The cylinder head anti-pullout bolt according to claim 2, wherein: the other side surface of the bolt cap (1) is provided with a hexagon socket (10), and the other end surface of the front bolt body (3) is provided with a dome (11).
4. The cylinder head anti-pullout bolt according to claim 3, wherein: the bolt is characterized in that the outer side wall of the rear bolt body (2) and the outer side wall of the front bolt body (3) are provided with the same threads, a round corner is arranged at the corner of the outer side wall of the bolt cap (1), and friction lines are arranged on the outer side wall of the bolt cap (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122561117.5U CN216691814U (en) | 2021-10-25 | 2021-10-25 | Bolt with anti-separation cylindrical head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122561117.5U CN216691814U (en) | 2021-10-25 | 2021-10-25 | Bolt with anti-separation cylindrical head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216691814U true CN216691814U (en) | 2022-06-07 |
Family
ID=81830335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122561117.5U Active CN216691814U (en) | 2021-10-25 | 2021-10-25 | Bolt with anti-separation cylindrical head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216691814U (en) |
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2021
- 2021-10-25 CN CN202122561117.5U patent/CN216691814U/en active Active
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