CN215487148U - Anti-loosening fastener for engine - Google Patents
Anti-loosening fastener for engine Download PDFInfo
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- CN215487148U CN215487148U CN202120334471.1U CN202120334471U CN215487148U CN 215487148 U CN215487148 U CN 215487148U CN 202120334471 U CN202120334471 U CN 202120334471U CN 215487148 U CN215487148 U CN 215487148U
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- screw rod
- fastener
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Abstract
The utility model discloses an anti-loose fastener for an engine, which comprises a main bolt and a limiting gasket, wherein the main bolt comprises a screw head and a screw rod, the top end of the screw rod is fixed at the center of the bottom surface of the screw head, the bottom surface of the screw head is provided with a plurality of inclined teeth of the head body around the screw rod, the center of the limiting gasket is provided with a middle hole for the screw rod to pass through, the top surface of the limiting gasket is provided with a plurality of inclined teeth of sheet bodies matched with the inclined teeth of the head body around the middle hole, and the inclined teeth of the head body and the inclined teeth of the sheet bodies are mutually pressed and limit the rotation direction of the main bolt to be consistent with the unscrewing direction of the main bolt from a part to be fixed. The utility model utilizes the mutual pressing of the inclined teeth of the head body and the inclined teeth of the sheet body to limit the main bolt to rotate towards the unscrewing direction, replaces the anti-loosening mode of directly utilizing the inclined teeth of the head body to be embedded in the surface of the piece to be fixed, and can adapt to the fixation of the material with hard surface texture and difficult deformation.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of fasteners, in particular to the technical field of anti-loose fasteners for engines.
[ background of the utility model ]
At present, fasteners are generally used to mount the engine at a given position by screwing. However, the existing fastener is simple in structure, and is easy to loosen under the vibration condition, particularly when the fastener is used in an environment with complex working conditions of high-frequency resonance and cold-hot alternation at any time, and the locking effect is not ideal.
[ Utility model ] content
The utility model aims to solve the problems in the prior art and provides an anti-loosening fastener for an engine, which can limit a main bolt to rotate towards a loosening direction.
In order to achieve the purpose, the utility model provides an anti-loosening fastener for an engine, which comprises a main bolt and a limiting gasket, wherein the main bolt comprises a screw head and a screw rod, the top end of the screw rod is fixed in the center of the bottom surface of the screw head, the bottom surface of the screw head is provided with a plurality of inclined teeth of the head body around the screw rod, the center of the limiting gasket is provided with a middle hole for the screw rod to pass through, the top surface of the limiting gasket is provided with a plurality of inclined teeth of the sheet body matched with the inclined teeth of the head body around the middle hole, and the inclined teeth of the head body and the inclined teeth of the sheet body are mutually abutted and limit the rotation direction of the main bolt to be consistent with the loosening direction of the main bolt from a part to be fixed.
Preferably, the center of the top surface of the screw head is provided with an inner hexagon.
Preferably, the outer surface of the middle-lower section of the screw is provided with external threads so as to form a smooth rod section and a threaded rod section which are arranged up and down.
Preferably, a guide head is arranged at the bottom end of the screw rod.
Preferably, the outer diameter of the limiting gasket is larger than that of the screw head.
Preferably, the limiting gasket is welded or in threaded connection with the piece to be fixed.
Preferably, the limiting gasket further comprises auxiliary bolts, a plurality of auxiliary holes are formed in the top of the limiting gasket around the oblique teeth of the sheet body, and the auxiliary bolts are sequentially connected with the to-be-fixed piece through threads after penetrating through the auxiliary holes.
Preferably, at least one of the head helical teeth and the blade helical teeth is provided with rough lines on the surface.
The utility model has the beneficial effects that: the utility model sets the head body helical teeth on the bottom surface of the screw head of the main bolt, and then the limit gasket is arranged at the preset hole of the piece to be fixed, so that the sheet body helical teeth matched with the head body helical teeth are uniformly formed outside the preset hole, the main bolt is limited to rotate towards the unscrewing direction by utilizing the mutual abutting of the head body helical teeth and the sheet body helical teeth, and the anti-loosening mode of directly embedding the head body helical teeth on the surface of the piece to be fixed is replaced, so that the utility model can adapt to the fixation of the material with hard surface texture and difficult deformation; the surface of at least one of the head helical teeth and the sheet body helical teeth is provided with rough lines, so that the mutual meshing effect of the head helical teeth and the sheet body helical teeth is further improved.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of a check fastener for an engine of the present invention;
FIG. 2 is a front view of a kingbolt of a looseness-preventing fastener for an engine according to the present invention;
FIG. 3 is a top view of a kingbolt of a looseness-prevention fastener for an engine according to the present invention;
FIG. 4 is a bottom view of a main bolt of the looseness-proof fastener for an engine of the present invention;
FIG. 5 is a front view of a spacing washer of the check fastener for an engine of the present invention;
fig. 6 is a plan view of a spacing washer of the looseness-proof fastener for an engine according to the present invention.
In the figure: 1-main bolt, 11-screw head, 111-head body helical tooth, 112-inner hexagonal, 12-screw rod, 121-external thread, 122-guide head, 2-limiting gasket, 21-middle hole, 22-sheet body helical tooth, 23-auxiliary hole and 3-auxiliary bolt.
[ detailed description ] embodiments
Referring to fig. 1 to 6, the anti-loose fastener for the engine of the present invention includes a main bolt 1 and a limiting washer 2, wherein the main bolt 1 includes a screw head 11 and a screw rod 12, the top end of the screw rod 12 is fixed at the center of the bottom surface of the screw head 11, the bottom surface of the screw head 11 is provided with a plurality of head body helical teeth 111 around the screw rod 12, the center of the limiting washer 2 is provided with a central hole 21 for the screw rod 12 to pass through, the top surface of the limiting washer 2 is provided with a plurality of sheet body helical teeth 22 matched with the head body helical teeth 111 around the central hole 21, and the head body helical teeth 111 and the sheet body helical teeth 22 are pressed against each other and limit the rotation direction of the main bolt 1 to be loosened from the fixing member.
The center of the top surface of the screw head 11 is provided with an inner hexagon 112.
The outer surface of the middle-lower section of the screw 12 is provided with external threads 121 to form a smooth rod section and a threaded rod section arranged one above the other.
The bottom end of the screw 12 is provided with a guide head 122.
The outer diameter of the limiting gasket 2 is larger than that of the screw head 11.
And the limiting gasket 2 is welded or in threaded connection with the to-be-fixed piece.
Still include vice bolt 3, the top of spacing gasket 2 is equipped with a plurality of subport 23 around lamellar body skewed tooth 22, a plurality of vice bolt 3 passes subport 23 in proper order after respectively with treating mounting threaded connection.
At least one of the head helical teeth 111 and the blade helical teeth 22 is provided with rough lines on the surface.
The working process of the utility model is as follows:
first, the spacing washer 2 is placed on the member to be fixed, and the central hole 21 is aligned with the preset hole of the member to be fixed, and the auxiliary hole 23 is aligned with the threaded hole of the member to be fixed. Then, a plurality of auxiliary bolts 3 are sequentially passed through the auxiliary holes 23 and screwed into the threaded holes, thereby mounting the spacing washer 2 on the member to be fixed. And then, the screw 12 of the main bolt 1 passes through the middle hole 21 and the preset hole in sequence, and is matched with the nut to finish the installation.
The utility model sets the head body helical teeth on the bottom surface of the screw head of the main bolt, and then the limit gasket is arranged at the preset hole of the piece to be fixed, so that the sheet body helical teeth matched with the head body helical teeth are uniformly formed outside the preset hole, the main bolt is limited to rotate towards the unscrewing direction by utilizing the mutual abutting of the head body helical teeth and the sheet body helical teeth, and the anti-loosening mode of directly embedding the head body helical teeth on the surface of the piece to be fixed is replaced, so that the utility model can adapt to the fixation of the material with hard surface texture and difficult deformation; the surface of at least one of the head helical teeth and the sheet body helical teeth is provided with rough lines, so that the mutual meshing effect of the head helical teeth and the sheet body helical teeth is further improved.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (8)
1. A check fastener for an engine, characterized in that: including kingbolt (1) and spacing gasket (2), kingbolt (1) includes spiral shell head (11) and screw rod (12), the bottom surface central authorities at spiral shell head (11) are fixed on the top of screw rod (12), the bottom surface of spiral shell head (11) is encircleed screw rod (12) and is equipped with a plurality of head skewed tooth (111), the central authorities of spacing gasket (2) are equipped with mesopore (21) that supply screw rod (12) to pass, the top surface of spacing gasket (2) is encircleed mesopore (21) and is equipped with a plurality of lamellar body skewed tooth (22) with head skewed tooth (111) matched with, head skewed tooth (111) and lamellar body skewed tooth (22) support each other and press and restrict kingbolt (1) pivoted direction and kingbolt (1) from treating the orientation of the pine in the mounting unanimously.
2. An anti-loose fastener for an engine as set forth in claim 1, characterized in that: the center of the top surface of the screw head (11) is provided with an inner hexagon (112).
3. An anti-loose fastener for an engine as set forth in claim 1, characterized in that: the outer surface of the middle lower section of the screw rod (12) is provided with external threads (121) so as to form a smooth rod section and a threaded rod section which are arranged up and down.
4. A check fastener for an engine as set forth in claim 3, wherein: the bottom end of the screw rod (12) is provided with a guide head (122).
5. An anti-loose fastener for an engine as set forth in claim 1, characterized in that: the outer diameter of the limiting gasket (2) is larger than that of the screw head (11).
6. An anti-loose fastener for an engine as set forth in claim 5, characterized in that: the limiting gasket (2) is welded or in threaded connection with the to-be-fixed piece.
7. An anti-loose fastener for an engine as defined in claim 6, characterized in that: still include vice bolt (3), the top of spacing gasket (2) is equipped with a plurality of subport (23) around lamellar body skewed tooth (22), a plurality of vice bolt (3) pass in proper order after subport (23) respectively with treat mounting threaded connection.
8. An engine check fastener as defined in any one of claims 1 to 7, wherein: at least one surface of the head body helical teeth (111) and the sheet body helical teeth (22) is provided with rough grains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120334471.1U CN215487148U (en) | 2021-02-05 | 2021-02-05 | Anti-loosening fastener for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120334471.1U CN215487148U (en) | 2021-02-05 | 2021-02-05 | Anti-loosening fastener for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215487148U true CN215487148U (en) | 2022-01-11 |
Family
ID=79762180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120334471.1U Active CN215487148U (en) | 2021-02-05 | 2021-02-05 | Anti-loosening fastener for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215487148U (en) |
-
2021
- 2021-02-05 CN CN202120334471.1U patent/CN215487148U/en active Active
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