CN216199723U - High-strength corrosion-resistant check bolt assembly for automobile - Google Patents
High-strength corrosion-resistant check bolt assembly for automobile Download PDFInfo
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- CN216199723U CN216199723U CN202122718908.4U CN202122718908U CN216199723U CN 216199723 U CN216199723 U CN 216199723U CN 202122718908 U CN202122718908 U CN 202122718908U CN 216199723 U CN216199723 U CN 216199723U
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Abstract
The utility model discloses a high-strength corrosion-resistant anti-loose bolt component for an automobile, which comprises a bolt, a wedge nut, an outer nut and a washer, wherein the bolt is provided with a bolt head, a first screw and a second screw from bottom to top; the upper end of the wedge-shaped nut is provided with a conical boss, the bottom of the wedge-shaped nut is provided with a first inclined tooth surface, the conical boss consists of a plurality of wedge-shaped elastic blocks, the lower end of the outer nut is provided with a conical groove, and the conical boss is connected with the conical groove in a sliding manner; and a second oblique tooth surface matched with the first oblique tooth surface is arranged at the top of the washer. The high-strength corrosion-resistant check bolt assembly for the automobile, disclosed by the utility model, has the advantages of high strength, good corrosion resistance, skid resistance, double check, improved connection strength and good anti-seismic check effect.
Description
Technical Field
The utility model belongs to the technical field of bolts, and particularly relates to a high-strength corrosion-resistant check bolt assembly for an automobile.
Background
The bolt belongs to a mechanical part and is a cylindrical threaded fastener matched with a nut. The fastener consists of a head part and a screw (a cylinder with external threads) and is used for fastening and connecting two parts with through holes. Among the connection assemblies, the bolt-nut connection is the most common fastening structure, and is applied to the fields of aerospace, aviation, railways, automobiles, medical treatment, furniture, engineering machinery, other various industrial machinery and the like.
The bolt is the connecting part that generally adopts on the car, the bolted connection who is used for fixing on the current car is unstable, the bolt with fasten the laminating of part, its bite-force is not enough when screwing, it is not hard up to skid easily, and at the in-process that the car went, because vibration, impact or other reasons, can make the pretightning force of exerting diminish gradually or even disappear along with the increase of live time, lead to the not hard up condition of bolted connection structure appearance, damage the overall stability of car, influence driving safety.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: in order to overcome the defects, the utility model aims to provide a high-strength corrosion-resistant anti-loose bolt assembly for an automobile, which has the advantages of simple structure, high strength and good corrosion resistance, is anti-skid through an anti-skid tooth surface, improves the joint force and the screwing engagement force through the matching of a first oblique tooth surface and a second oblique tooth surface and the matching of a wedge-shaped elastic block and a conical groove, is connected and fastened, and has good anti-shock and anti-loose effects.
The technical scheme is as follows: a high-strength corrosion-resistant anti-loose bolt assembly for an automobile comprises a bolt, a wedge nut, an outer nut and a washer, wherein the bolt is provided with a bolt head, a first screw and a second screw from bottom to top, the bolt head is a hexagonal flange bolt head, a first anti-skid tooth surface is arranged on the top surface of the bolt head, the friction resistance of a connecting surface is increased, the connecting strength is improved, the outer diameter of the first screw is larger than that of the second screw, the rotation direction of an external thread of the first screw is opposite to that of an external thread of the second screw, the wedge nut is in threaded connection with the first screw, and the outer nut is in threaded connection with the second screw; the upper end of the wedge-shaped nut is provided with a conical boss, the bottom of the wedge-shaped nut is provided with a first inclined tooth surface, the conical boss is composed of a plurality of wedge-shaped elastic blocks which are circumferentially arrayed, the lower end of the outer nut is provided with a conical groove, and the conical boss is matched with the conical groove and is in sliding connection with the conical groove; the gasket is sleeved on the first screw rod and located below the wedge-shaped nut, and a second oblique tooth surface matched with the first oblique tooth surface is arranged at the top of the gasket. When the anti-slip bolt is used, the bolt is inserted into the through hole of the connecting piece, the washer is sleeved, the wedge-shaped nut is screwed on the first screw, and the fitting and screwing engaging force of the bolt, the wedge-shaped nut and the connecting piece is improved through the anti-slip of the first anti-slip tooth surface and the anti-loose of the matching of the first oblique tooth surface and the second oblique tooth surface; then on will screwing the second screw rod with outer nut, during the wedge bullet piece inserted the toper recess, along with tighten up outer nut downwards, the first screw rod is held tightly to the wedge bullet piece, increases the frictional force of wedge nut and bolt for wedge nut and bolted connection fasten, improve antidetonation locking performance. Through the combination of the wedge-shaped structure and the anti-loosening and anti-skid surface, the anti-seismic and anti-loosening performance is further improved, so that the bolt assembly resists seismic and anti-loosening in severe vibration or dynamic load, and the running safety of the automobile is improved.
Furthermore, in the anti-loose bolt assembly with high strength and corrosion resistance for the automobile, the second anti-slip tooth surface is arranged on the bottom surface of the washer, and the tooth shapes of the first anti-slip tooth surface and the second anti-slip tooth surface are both strip-shaped teeth with arc-shaped sections and are uniformly distributed around the first screw rod as the center. The first anti-slip tooth surface and the second anti-slip tooth increase the friction force between the bolt head, the washer and the connected piece, prevent sliding and loosening, and improve the engaging force of fitting and screwing.
Furthermore, in the high-strength corrosion-resistant anti-loose bolt assembly for the automobile, the tooth profile of the helical teeth on the first helical tooth surface gradually decreases from the outside to the center, and the helical teeth are circumferentially and spirally distributed by taking the wedge nut as the center. The first inclined tooth surface is matched with the second inclined tooth surface to prevent looseness, and the first inclined tooth surface and the second inclined tooth surface play a dual role in preventing looseness of the wedge-shaped nut, so that the looseness-preventing effect is improved.
Further, in the above-mentioned high-strength corrosion-resistant check bolt assembly for an automobile, a slope angle of the helical teeth on the first helical tooth surface is greater than an external thread lift angle of the first screw. When the bolt is loosened, the lifting distance between the wedge-shaped nut and the washer is larger than that of the thread, so that a lever effect is achieved, and looseness is prevented.
Furthermore, according to the high-strength corrosion-resistant anti-loose bolt assembly for the automobile, an open slot is formed between every two adjacent wedge-shaped elastic blocks, the tapered boss is divided into the plurality of wedge-shaped elastic blocks through the open slot, and the number of the wedge-shaped elastic blocks is 2-4. The wedge-shaped elastic block tightly holds the bolt under the action of the rotary pressing of the conical groove, so that the friction force is increased, and the wedge-shaped nut is connected and fastened with the bolt.
Furthermore, according to the high-strength corrosion-resistant anti-loose bolt assembly for the automobile, the depth of the conical groove is larger than or equal to the height of the wedge-shaped elastic block, so that the wedge-shaped elastic block is fully utilized.
Furthermore, according to the high-strength corrosion-resistant anti-loose bolt component for the automobile, anaerobic adhesive is arranged at the joint of the lower end of the first screw and the wedge nut. The anaerobic adhesive can fasten the bolt, and further has a locking effect.
Furthermore, in the high-strength corrosion-resistant check bolt assembly for the automobile, the bolt, the wedge nut, the outer nut and the washer are all made of stainless steel. The stainless steel has good mechanical characteristics, long service life, high strength and good corrosion resistance.
The technical scheme shows that the utility model has the following beneficial effects: the high-strength corrosion-resistant anti-loose bolt assembly for the automobile is made of stainless steel, has good mechanical characteristics and service life, is high in strength and good in corrosion resistance, is anti-skid through the anti-skid tooth surface, is double-anti-loose through matching of the first oblique tooth surface and the second oblique tooth surface and matching of the wedge-shaped elastic block and the conical groove, improves the bonding and screwing occlusion force, is connected and fastened, and is good in anti-seismic and anti-loose effect.
Drawings
FIG. 1 is a schematic structural view of a high-strength corrosion-resistant check bolt assembly for an automobile according to the present invention;
FIG. 2 is a schematic cross-sectional view of a high-strength corrosion-resistant check bolt assembly for an automobile according to the present invention;
FIG. 3 is a schematic view of a first anti-slip tooth surface of a high-strength corrosion-resistant anti-loose bolt assembly for an automobile according to the present invention;
FIG. 4 is a schematic view of a first inclined tooth surface of a high-strength corrosion-resistant check bolt assembly for an automobile according to the present invention;
FIG. 5 is a schematic top view of a wedge nut of the high-strength corrosion-resistant check bolt assembly for an automobile according to the present invention;
in the figure: 1 bolt, 11 bolt head, 12 first screw rod, 13 second screw rod, 14 first anti-skid tooth surface, 2 wedge-shaped nut, 21 conical boss, 211 wedge-shaped elastic block, 212 open slot, 22 first oblique tooth surface, 3 external nut, 31 conical groove, 4 washer, 41 second oblique tooth surface and 42 second anti-skid tooth surface.
Detailed Description
The utility model is further elucidated with reference to the drawings and the embodiments.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
As shown in fig. 1-5, the high-strength corrosion-resistant anti-loose bolt assembly for the automobile comprises a bolt 1, a wedge nut 2, an outer nut 3 and a washer 4, wherein the bolt 1 is provided with a bolt head 11, a first screw 12 and a second screw 13 from bottom to top, the bolt head 11 is a hexagonal flange bolt head, the top surface of the bolt is provided with a first anti-skid tooth surface 14, the frictional resistance of a connecting surface is increased, the connecting strength is improved, the outer diameter of the first screw 12 is larger than that of the second screw 12, the rotation direction of the outer thread of the first screw 12 is opposite to that of the outer thread of the second screw 13, the wedge nut 2 is in threaded connection with the first screw 12, and the outer nut 3 is in threaded connection with the second screw 13; the upper end of the wedge-shaped nut 2 is provided with a conical boss 21, the bottom of the wedge-shaped nut is provided with a first inclined tooth surface 22, the washer 4 is sleeved on the first screw rod 12 and located below the wedge-shaped nut 2, and the top of the washer 4 is provided with a second inclined tooth surface 41 matched with the first inclined tooth surface 22.
The tapered boss 21 is composed of a plurality of wedge-shaped elastic blocks 211 arranged in a circumferential array, an open slot 212 is formed between every two adjacent wedge-shaped elastic blocks 211, the tapered boss 21 is divided into the plurality of wedge-shaped elastic blocks 211 through the open slot 212, and the number of the wedge-shaped elastic blocks 211 is 4; the lower end of the outer nut 3 is provided with a conical groove 31, and the conical boss 21 is matched with the conical groove 31 and is in sliding connection with the conical groove 31. The wedge-shaped elastic block 211 tightly holds the bolt 1 under the action of the rotary pressing of the conical groove 31, so that the friction force is increased, and the wedge-shaped nut 2 is connected and fastened with the bolt 1.
Example 2
As shown in fig. 1-5, the high-strength corrosion-resistant anti-loose bolt assembly for the automobile comprises a bolt 1, a wedge nut 2, an outer nut 3 and a washer 4, wherein the bolt 1 is provided with a bolt head 11, a first screw 12 and a second screw 13 from bottom to top, the bolt head 11 is a hexagonal flange bolt head, the top surface of the bolt is provided with a first anti-skid tooth surface 14, the frictional resistance of a connecting surface is increased, the connecting strength is improved, the outer diameter of the first screw 12 is larger than that of the second screw 12, the rotation direction of the outer thread of the first screw 12 is opposite to that of the outer thread of the second screw 13, the wedge nut 2 is in threaded connection with the first screw 12, and the outer nut 3 is in threaded connection with the second screw 13; the upper end of the wedge-shaped nut 2 is provided with a conical boss 21, the bottom of the wedge-shaped nut is provided with a first inclined tooth surface 22, the washer 4 is sleeved on the first screw rod 12 and located below the wedge-shaped nut 2, and the top of the washer 4 is provided with a second inclined tooth surface 41 matched with the first inclined tooth surface 22.
The tapered boss 21 is composed of a plurality of wedge-shaped elastic blocks 211 arranged in a circumferential array, an open slot 212 is formed between every two adjacent wedge-shaped elastic blocks 211, the tapered boss 21 is divided into the plurality of wedge-shaped elastic blocks 211 through the open slot 212, and the number of the wedge-shaped elastic blocks 211 is 3; the lower end of the outer nut 3 is provided with a conical groove 31, and the conical boss 21 is matched with the conical groove 31 and is in sliding connection with the conical groove 31. The wedge-shaped elastic block 211 tightly holds the bolt 1 under the action of the rotary pressing of the conical groove 31, so that the friction force is increased, and the wedge-shaped nut 2 is connected and fastened with the bolt 1.
As shown in fig. 2-3, the bottom surface of the washer 4 is provided with a second anti-slip tooth surface 42, and the tooth profiles of the first anti-slip tooth surface 14 and the second anti-slip tooth surface 42 are both strip teeth with arc-shaped cross sections, and are uniformly distributed around the first screw 12 as a center. The first anti-slip tooth surface 14 and the second anti-slip tooth 42 increase the friction force between the bolt head 11, the washer 4 and the connected piece, prevent sliding and loosening, and improve the engaging force of fitting and screwing.
As shown in fig. 2 and 4, the first helical tooth surface 22 has a tapered tooth profile from the outside to the center, and is circumferentially and spirally distributed with the wedge nut 2 as the center. The first inclined tooth surface 22 and the second inclined tooth surface 41 are matched to prevent looseness, and play a double role in preventing looseness with the wedge nut 2, so that the looseness-preventing effect is improved.
The slope angle of the helical teeth on the first helical tooth surface 22 is greater than the external thread lift angle of the first screw 12. When the bolt is loosened, the lifting distance between the wedge-shaped nut 2 and the washer 4 is larger than that of the thread, so that a lever effect is achieved, and looseness is prevented.
The depth of the conical groove 31 is greater than or equal to the height of the wedge-shaped elastic block 211, so that the wedge-shaped elastic block 211 is fully utilized.
Anaerobic adhesive is arranged at the joint of the lower end of the first screw 12 and the wedge-shaped nut 2. The anaerobic adhesive can fasten the bolt, and further has the anti-loosening effect
The bolt 1, the wedge-shaped nut 2, the outer nut 3 and the washer 4 are all made of stainless steel. The stainless steel has good mechanical characteristics, long service life, high strength and good corrosion resistance.
The working principle of the high-strength corrosion-resistant check bolt assembly for the automobile is as follows: when the anti-slip bolt is used, the bolt 1 is inserted into a through hole of a connecting piece, the washer 4 is sleeved, the wedge-shaped nut 2 is screwed on the first screw 12, and the fit and screwing engaging force of the bolt 1, the wedge-shaped nut 2 and the connecting piece is improved through the anti-slip of the first anti-slip tooth surface 14 and the anti-loose of the first oblique tooth surface 22 and the second oblique tooth surface 41; then, the outer nut 3 is screwed on the second screw 13, the wedge-shaped elastic block 211 is inserted into the conical groove 31, along with the downward tightening of the outer nut 3, the wedge-shaped elastic block 211 tightly holds the first screw 12, the friction force between the wedge-shaped nut 2 and the bolt 1 is increased, the wedge-shaped nut 2 is connected and fastened with the bolt 1, and the anti-seismic and anti-loosening performance is improved. Through the combination of the wedge-shaped structure and the anti-loosening and anti-skid surface, the anti-seismic and anti-loosening performance is further improved, so that the bolt assembly resists seismic and anti-loosening in severe vibration or dynamic load, and the running safety of the automobile is improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (8)
1. The utility model provides a corrosion-resistant check bolt subassembly of high strength for car which characterized in that: the bolt comprises a bolt (1), a wedge nut (2), an outer nut (3) and a washer (4), wherein the bolt (1) is provided with a bolt head (11), a first screw rod (12) and a second screw rod (13) from bottom to top, the bolt head (11) is a hexagonal flange bolt head, a first anti-skidding tooth surface (14) is arranged on the top surface, the outer diameter of the first screw rod (12) is larger than that of the second screw rod (13), the external thread of the first screw rod (12) is opposite to that of the second screw rod (13), the wedge nut (2) is in threaded connection with the first screw rod (12), and the outer nut (3) is in threaded connection with the second screw rod (13); the wedge-shaped nut is characterized in that a conical boss (21) is arranged at the upper end of the wedge-shaped nut (2), a first oblique tooth surface (22) is arranged at the bottom of the wedge-shaped nut, the conical boss (21) is composed of a plurality of wedge-shaped elastic blocks (211) which are circumferentially arrayed, a conical groove (31) is formed in the lower end of the outer nut (3), and the conical boss (21) is matched with the conical groove (31) and is in sliding connection with the conical groove; the washer (4) is sleeved on the first screw rod (12) and located below the wedge-shaped nut (2), and a second inclined tooth surface (41) matched with the first inclined tooth surface (22) is arranged at the top of the washer (4).
2. The high-strength corrosion-resistant check bolt assembly for the automobile according to claim 1, wherein: the bottom surface of the gasket (4) is provided with a second anti-slip tooth surface (42), the tooth shapes of the first anti-slip tooth surface (14) and the second anti-slip tooth surface (42) are both strip-shaped teeth with arc-shaped sections, and the first screw rods (12) are uniformly distributed around the center.
3. The high-strength corrosion-resistant check bolt assembly for the automobile according to claim 1, wherein: the tooth form of the upper helical tooth of the first helical tooth surface (22) is gradually reduced from the outside to the center, and the tooth form is circumferentially and spirally distributed by taking the wedge-shaped nut (2) as the center.
4. The high-strength corrosion-resistant check bolt assembly for the automobile according to claim 3, wherein: the slope angle of the inclined teeth on the first inclined tooth surface (22) is larger than the external thread lifting angle of the first screw (12).
5. The high-strength corrosion-resistant check bolt assembly for the automobile according to claim 1, wherein: an opening groove (212) is formed between every two adjacent wedge-shaped elastic blocks (211), the tapered boss (21) is divided into a plurality of wedge-shaped elastic blocks (211) through the opening groove (212), and the number of the wedge-shaped elastic blocks (211) is 2-4.
6. The high-strength corrosion-resistant check bolt assembly for the automobile according to claim 5, wherein: the depth of the conical groove (31) is more than or equal to the height of the wedge-shaped elastic block (211).
7. The high-strength corrosion-resistant check bolt assembly for the automobile according to claim 1, wherein: anaerobic adhesive is arranged at the joint of the lower end of the first screw rod (12) and the wedge-shaped nut (2).
8. The high-strength corrosion-resistant check bolt assembly for the automobile according to claim 1, wherein: the bolt (1), the wedge-shaped nut (2), the outer nut (3) and the washer (4) are all made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122718908.4U CN216199723U (en) | 2021-11-08 | 2021-11-08 | High-strength corrosion-resistant check bolt assembly for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122718908.4U CN216199723U (en) | 2021-11-08 | 2021-11-08 | High-strength corrosion-resistant check bolt assembly for automobile |
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| Publication Number | Publication Date |
|---|---|
| CN216199723U true CN216199723U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122718908.4U Active CN216199723U (en) | 2021-11-08 | 2021-11-08 | High-strength corrosion-resistant check bolt assembly for automobile |
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| CN (1) | CN216199723U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857154A (en) * | 2022-05-27 | 2022-08-05 | 三峡大学 | Anti-loosening bolt assembly and method suitable for connection of cross arm and tower body of power transmission line |
| CN115126761A (en) * | 2022-05-18 | 2022-09-30 | 浙江科腾精工机械股份有限公司 | Anti-theft type bolt and nut is with cooperation subassembly |
-
2021
- 2021-11-08 CN CN202122718908.4U patent/CN216199723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126761A (en) * | 2022-05-18 | 2022-09-30 | 浙江科腾精工机械股份有限公司 | Anti-theft type bolt and nut is with cooperation subassembly |
| CN114857154A (en) * | 2022-05-27 | 2022-08-05 | 三峡大学 | Anti-loosening bolt assembly and method suitable for connection of cross arm and tower body of power transmission line |
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