CN213451271U - Novel bolt bushing assembly - Google Patents
Novel bolt bushing assembly Download PDFInfo
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- CN213451271U CN213451271U CN202022066288.6U CN202022066288U CN213451271U CN 213451271 U CN213451271 U CN 213451271U CN 202022066288 U CN202022066288 U CN 202022066288U CN 213451271 U CN213451271 U CN 213451271U
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- connecting bolt
- bolt
- bushing assembly
- bush
- tooth
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Abstract
The utility model relates to a novel bolt bush sub-assembly relates to bolt bush technical field, and it includes that connecting bolt and cover establish the bush on connecting bolt, be provided with the back-off tooth between connecting bolt's nut and screw portion, be provided with indent stop part in the bush, form interference fit between indent stop part and the back-off tooth. The application of the concave blocking part serves as the blocking block, and the concave blocking part and the back-off teeth form interference fit, so that the connecting bolt passing through the concave blocking part is not prone to being separated from the lining, and the connecting effect between the connecting bolt and the connected object is improved.
Description
Technical Field
The application relates to the technical field of bolt bushes, in particular to a novel bolt bush assembly.
Background
The bolt is a cylindrical threaded fastener and is mainly used for fastening and connecting two parts with through holes. In daily life and industrial production, the application of the bolt is very extensive and is called industrial rice. The head of the common bolt has a small contact surface with the connected object, which results in a large contact surface pressure and easy damage to the connected object, therefore, in the related art, a bush is usually sleeved outside the bolt to become a combination bolt, so as to increase the contact surface.
However, the bush in the related art is easily separated from the bolt during the actual use, which affects the connection effect of the bolt, and there is a need for improvement.
SUMMERY OF THE UTILITY MODEL
To prevent the bushing from disengaging from the bolt, the present application provides a novel bolt bushing assembly.
The application provides a novel bolt bush sub-assembly adopts following technical scheme:
the utility model provides a novel bolt bush sub-assembly, establishes the bush on connecting bolt including connecting bolt and cover, be provided with the back-off tooth between connecting bolt's nut and screw thread portion, be provided with indent barrier portion in the bush, form interference fit between indent barrier portion and the back-off tooth.
By adopting the technical scheme, the connecting bolt is inserted into the bushing, then the connecting bolt is pressed towards the screwing direction of the connecting bolt, so that the inverted tooth on the connecting bolt passes through the inward concave blocking part in the bushing, at the moment, the inward concave blocking part serves as the blocking block, and the inward concave blocking part and the inverted tooth form interference fit, so that the connecting bolt passing through the inward concave blocking part is not easy to break away from the bushing, and the connecting effect between the connecting bolt and the connected object is improved.
Preferably, the included angle between the inner wall of the inward concave blocking part and the vertical side wall of the bushing is gradually increased along the screwing direction of the connecting bolt, a blocking convex point is formed, and interference fit is formed between the blocking convex point and the back-off tooth.
By adopting the technical scheme, the structure of the inwards concave blocking part is realized, and the blocking effect on the back-off teeth is realized by using the blocking convex points.
Preferably, one side of the back-off teeth, which is far away from the screw cap, is provided with a guide inclined plane.
Through adopting above-mentioned technical scheme, utilize the back-off tooth to keep away from the guide inclined plane that nut one side set up, convenient to use person breaks through the connecting bolt and blocks the bump in the indent blocking part.
Preferably, the included angle between the inner wall of the inner concave barrier and the vertical side wall is 30 DEG0To 400The gradient of the guide inclined plane is 400。
By adopting the technical scheme, the inclination of the inner concave blocking part and the inclination of the guide inclined plane are specifically realized.
Preferably, one side of each back-off tooth, which is close to the corresponding nut, is provided with a right-angle surface, and an abutting wall abutting against the right-angle surface is formed between each blocking convex point and the inner wall of each bushing.
Through adopting above-mentioned technical scheme, utilize the back-off tooth to be close to the right angle face that nut one side set up, area of contact when the reverse separation of increase back-off tooth stops the bump, and then the effect of reinforcing anticreep break away from.
Preferably, the blocking salient points are arranged in a plurality in a circumferential array in the bushing.
Through adopting above-mentioned technical scheme, will block that the bump is the circumference array in the bush and be provided with a plurality ofly, further strengthen the effect of anticreep.
Preferably, the end of the bushing near the nut is provided with an abutment rim extending outwards.
Through adopting above-mentioned technical scheme, utilize the butt flange that outwards extends the setting, increase the area of contact between bush and the connected object, improve the connection effect.
Preferably, a joint of a nut of the connecting bolt and the light rod is provided with a contact increasing cushion block, and the contact increasing cushion block is abutted to the abutting edge.
By adopting the technical scheme, when the connecting bolt is screwed tightly, the contact increasing cushion block is abutted against the abutting edge, so that the connecting bolt and the connected object are prevented from being abraded.
In summary, the present application includes at least one of the following beneficial technical effects:
the connecting bolt is inserted into the bushing, and then the connecting bolt is pressed towards the screwing-in direction of the connecting bolt, so that the inverted tooth on the connecting bolt passes through the inward-concave blocking part in the bushing, at the moment, the inward-concave blocking part serves as a blocking block, and the connecting bolt passing through the inward-concave blocking part is not easy to separate from the bushing due to the interference fit between the inward-concave blocking part and the inverted tooth, so that the connecting effect between the connecting bolt and an object to be connected is improved;
with the help of right angle face and butt wall and block the bump, realize the bush to the one-way effect that blocks of back-off tooth, and then further prevent that connecting bolt breaks away from the bush.
Drawings
Fig. 1 is a partial sectional view of the overall structure of the bolt bushing assembly embodying the present embodiment;
FIG. 2 is a schematic view of the present embodiment mainly showing the structure of the bushing;
fig. 3 is a schematic structural diagram of the present embodiment mainly showing the liner in a top view.
Reference numerals: 1. a connecting bolt; 11. a nut; 12. a polish rod; 13. a threaded portion; 2. a bushing; 21. abutting the edge; 3. increasing a contact cushion block; 4. a back-off tooth; 41. a right-angled surface; 42. a guide ramp; 5. an inward-recessed barrier portion; 6. blocking the salient points; 7. abutting the wall.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses novel bolt bush sub-assembly. Referring to fig. 1, the novel bolt and bushing assembly comprises a connecting bolt 1 and a bushing 2 sleeved on the connecting bolt 1, wherein the connecting bolt 1 comprises a nut 11, a polished rod 12 and a threaded part 13 which are sequentially connected, the nut 11 is a hexagonal nut 11, and a contact increasing pad 3 is integrally formed at the joint of the nut 11 and the polished rod 12; the connecting part of the polish rod 12 and the thread part 13 is integrally formed with a back-off tooth 4, one side of the back-off tooth 4 close to the nut 11 is provided with a right-angle surface 41, namely a parallel surface, one side of the back-off tooth 4 far away from the nut 11 is provided with a guide inclined surface 42, and the gradient of the guide inclined surface 42 is set to 400；
Referring to fig. 1 and 2, the bushing 2 is shaped like a cylinder, an abutting edge 21 extends outwards from one end of the bushing 2, the abutting edge 21 and the bushing 2 are integrally formed, and after the connecting bolt 1 penetrates into the bushing 2, a contact pad of the connecting bolt 1 abuts against the abutting edge 21, so that the contact area between the bushing 2 and an object to be connected is increased, and meanwhile, the nut 11 of the connecting bolt 1 is prevented from being worn with the object to be connected.
One side of the bush 2 close to the butt edge 21 is provided with an inward concave stopperPart 5, the included angle between the inner wall of the concave blocking part 5 and the vertical side wall of the bush 2 is 30 degrees along the screwing direction of the connecting bolt 10Transition to 400And a stopping convex point 6 is formed at the end, and the inner wall of the concave stopping part 5 forms interference fit with the guide inclined plane 42.
Referring to fig. 2 and 3, should block that bump 6 is provided with a plurality ofly along bush 2 circumference array, and this embodiment blocks that bump 6 is provided with four along bush 2 circumference array, and arbitrary bump 6 that blocks all forms interference fit with back-off tooth 4, and arbitrary bump 6 and the vertical inner wall of bush 2 between be formed with the butt wall 7 with right angle face 41 looks butt, and butt wall 7 is the level setting.
The implementation principle of the novel bolt bushing assembly of the embodiment of the application is as follows:
in actual use, insert bush 2 earlier in treating the connecting hole, then insert connecting bolt 1 in bush 2, and press connecting bolt 1 to connecting bolt 1's precession direction, make under the effect that the domatic looks agree with of back-off tooth 4 guide inclined plane 42 and indent blocking part 5, the back-off tooth 4 of being convenient for passes indent blocking part 5 in bush 2, at this moment, the domatic of indent blocking part 5 with block bump 6 and act as and block the piece, because indent blocking part 5 forms interference fit with back-off tooth 4, after back-off tooth 4 passes and blocks bump 6, the right-angle side 41 and the butt wall 7 looks butt of back-off tooth 4, make connecting bolt 1 that passes indent blocking part 5 be difficult for breaking away from in bush 2, and then improve the connecting effect between connecting bolt 1 and the object of being connected.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A novel bolt bushing assembly is characterized in that: the connecting bolt structure comprises a connecting bolt (1) and a bushing (2) sleeved on the connecting bolt (1), wherein reverse-buckling teeth (4) are arranged between a nut (11) and a threaded portion (13) of the connecting bolt (1), an inner concave blocking portion (5) is arranged in the bushing (2), and interference fit is formed between the inner concave blocking portion (5) and the reverse-buckling teeth (4).
2. The novel bolt bushing assembly of claim 1, wherein: the included angle between the inner wall of the inner concave blocking part (5) and the vertical side wall of the bushing (2) is gradually increased along the screwing direction of the connecting bolt (1) and is formed with a blocking convex point (6), and interference fit is formed between the blocking convex point (6) and the back-off tooth (4).
3. The novel bolt bushing assembly of claim 2, wherein: and a guide inclined plane (42) is arranged on one side of the back-off tooth (4) far away from the screw cap (11).
4. A novel bolt bushing assembly according to claim 3, wherein: the included angle between the inner wall of the inner concave blocking part (5) and the vertical side wall is formed by 300To 400The slope of the guide slope (42) is 400。
5. A novel bolt bushing assembly according to claim 3, wherein: one side that back-off tooth (4) are close to nut (11) is provided with right angle face (41), be formed with between the inner wall of blockking bump (6) and bush (2) with butt joint wall (7) of right angle face (41) looks butt.
6. The novel bolt bushing assembly of claim 2, wherein: the blocking salient points (6) are arranged in the lining (2) in a circumferential array.
7. The novel bolt bushing assembly of claim 1, wherein: the end part of the bush (2) close to the nut (11) extends outwards to form an abutting edge (21).
8. The novel bolt bushing assembly of claim 7, wherein: the joint of the nut (11) of the connecting bolt (1) and the polished rod (12) is provided with a contact increasing cushion block (3), and the contact increasing cushion block (3) is abutted to the abutting edge (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022066288.6U CN213451271U (en) | 2020-09-18 | 2020-09-18 | Novel bolt bushing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022066288.6U CN213451271U (en) | 2020-09-18 | 2020-09-18 | Novel bolt bushing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213451271U true CN213451271U (en) | 2021-06-15 |
Family
ID=76325737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022066288.6U Active CN213451271U (en) | 2020-09-18 | 2020-09-18 | Novel bolt bushing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213451271U (en) |
-
2020
- 2020-09-18 CN CN202022066288.6U patent/CN213451271U/en active Active
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