Combined bushing assembly capable of being quickly connected

Abstract

The utility model provides a combined bushing assembly capable of being quickly connected, which is characterized in that a through hole is formed in the center of a bushing, the bottom of the bushing is a connecting end, and the top of the bushing is a positioning end; the clamp spring sleeves the top of the bushing and is positioned outside the positioning end; the top of the bolt is clamped in the center of the clamp spring and is in interference fit with the through hole, the bottom of the bolt penetrates through the lining downwards along the through hole and extends downwards, the clamp spring is added to the connecting portion of the top of the lining and the bolt, the clamp spring deforms during assembly and is in interference fit with the lining and the bolt, and the locking strength between the bolt and the lining is improved. When a gap is formed between the bolt and the bushing, the angle of the concave curved surface at the joint of the snap spring and the bolt is changed, so that self-adaptive adjustment is realized, and the situation that the bushing deviates due to the fact that the fit gap between the bushing and the bolt is increased and the vibration amplitude of the bolt is increased when the bushing and the bolt are in a thermal expansion and cold contraction state in a traditional riveting scheme can be eliminated; and internal deformation of the bushing can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts especially to the technical field of connecting piece of axial automobile brake pedal, specifically to a quick connection combined bush assembly. BACKGROUND

[0002] The upper end of the pedal swing arm of the existing brake pedal assembly is fixed on the brake support through a swing arm shaft, and the swing arm shaft and the brake support are usually fixedly connected by bolts;

[0003] In order to install the brake pedal assembly on the corresponding position of the automobile, a bushing is usually arranged on the brake support, and then the brake pedal assembly is installed on the automobile by bolts passing through the through hole of the bushing. In the prior art, the bushing needs to be fixed on the brake support by welding or riveting:

[0004] Welding will damage the surface of the brake support, and the anticorrosion coating between the brake support and the bushing will be damaged by high temperature;

[0005] The traditional bushing is used in riveting processing. Because the locking force between the riveted bushing and the brake support is not as good as that of the bushing assembled by welding, with the passage of time, the bolts will cause the position of the bushing to deviate and the bushing to deform due to thermal expansion and contraction and vibration, so that the locking force is not available, and the bolts will loosen;

[0006] In the prior art, a riveted bushing type brake pedal assembly is disclosed, and the patent number is CN206719187U. A riveted bushing type brake pedal assembly is disclosed, which comprises a brake support, a swing arm, a pedal pad and a bushing. The upper end of the swing arm is installed on the brake support through a swing arm shaft, and the lower end is fixedly connected with the pedal pad. The bushing is a hollow cylindrical structure, and the bushing is fixed on the brake support by stamping and riveting. The bushing is fixed on the brake support by stamping and riveting, which is automatic and has high production efficiency, can be mass produced, has no noise in the stamping and riveting process, will not produce toxic gas, will not damage the surface of the bushing or the brake support, and will retain the original corrosion resistance. The technical scheme adopts the flat mouth bushing riveting method, and the bolts and the bushing are prone to looseness over time. SUMMARY

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a quick connection combined bush assembly for solving the difficulties of the prior art.

[0008] To achieve the above-mentioned purpose and other related purposes, the utility model provides a quick connection combined bush assembly, which comprises:

[0009] The bushing 1 is centrally provided with a through hole 11, the bottom of the bushing 1 is a connecting end 13, and the top of the bushing 1 is a positioning end 14.

[0010] The clamping spring 2 is sleeved on the top of the bushing 1 and located outside the positioning end 14.

[0011] The bolt 3 is clamped on the top of the clamping spring 2 and is in interference fit with the through hole 11, and the bottom of the bolt 3 penetrates the bushing 1 along the through hole 11 and is in excess fit with the through hole 11.

[0012] In the technical solution, the connecting end 13 at the bottom of the bushing 1 is clamped in the brake support, and the positioning end 14 at the top of the bushing 1 is used for positioning the installation of the bolt 3.

[0013] In the technical solution, the clamping spring 2 plays a role of limiting and locking the bolt 3, thereby improving the locking force between the bushing 1 and the bolt 3.

[0014] According to the preferred solution, the bushing 1 is in T shape, the outer diameter of the positioning end 14 is greater than that of the connecting end 13, and the outer contour of the positioning end 14 can be polygonal or circular.

[0015] Further, the connecting end 13 at the bottom of the bushing 1 needs to be hardened by heat treatment before riveting to increase wear resistance and improve the service life of this position.

[0016] According to the preferred solution, the clamping spring 2 is provided with an integral clamping jaw 21 around the bottom, the clamping jaw 21 is in L shape, the top of the clamping jaw 21 is in contact with the outer side wall of the positioning end 14 on one side close to the central axis of the bushing 1, the top end of the bottom of the clamping jaw 21 is attached to the bottom of the positioning end 14, and the bottom of the clamping jaw 21 is in contact with the outer side wall of the connecting end 13 on one side close to the central axis of the bushing 1.

[0017] Further, the clamping spring 2 and the clamping jaw 21 are integrated, have high overall strength, and are low in processing cost.

[0018] According to the preferred solution, the top of the clamping spring 2 is centrally provided with a concave surface 22, the concave surface 22 is centrally provided with a circular through hole 23, and the concave surface 22 is provided with deformation grooves 24 at equal intervals around the concave surface 22, and the deformation grooves 24 are communicated with the circular through hole 23.

[0019] Further, the circular through hole 23 and the deformation grooves 24 enable the clamping spring 2 to be penetrated into the bolt and deformed, the concave surface 22 of the clamping spring 2 is deformed and tightly attached between the bolt 3 and the through hole in the bushing 1, so that the clamping spring 2 and the bushing 1 are in interference fit, the bolt 3 is axially locked, the bolt 3 can be easily penetrated into the bushing 1 by a tool, but the concave surface 22 will clamp the bolt 3 to axially limit the bolt 3 when the bolt 3 is pulled out.

[0020] In the technical solution, the concave curved surface 22 is arranged instead of a plane to prevent the individual deformation groove 24 from being bent upward during the process of passing the bolt through the center of the clamp spring 2.

[0021] According to the preferred solution, the diameter of the circular perforation 23 is smaller than the diameter of the through hole 11, and the sum of the diameter of the circular perforation 23 and the length of the deformation groove 24 is greater than the diameter of the through hole 11.

[0022] In the technical solution, the diameter of the circular perforation 23 is smaller than the diameter of the through hole 11, so that the concave curved surface 22 can enter the through hole 11, and the sum of the diameter of the circular perforation 23 and the length of the deformation groove 24 is greater than the diameter of the through hole 11, so that the concave curved surface 22 can be deformed more easily.

[0023] According to the preferred solution, the bolt 3 is a section light pole or a threaded rod in the bushing 1.

[0024] In the technical solution, the effect of locking the bolt 3 by deforming the clamp spring 2 is not limited to whether the bolt 3 has a thread on the outer contour, and can be suitable for more types of bolts or connecting pieces.

[0025] According to the preferred solution, the top of the through hole 11 is provided with a round corner 12.

[0026] In the technical solution, the round corner at the top of the through hole 11 plays a guiding role.

[0027] The utility model discloses a bushing 1, clamp spring 2 and bolt 3, add clamp spring 2 to the top of bushing 1 and the connecting part of bolt 3, and the interference fit is formed between the deformation of clamp spring 2 and bushing 1 and bolt 3 during assembly, the locking strength between bolt 3 and bushing 1 is improved, and if thermal expansion and cold shrinkage occur, the angle of the concave curved surface 22 at the fitting position of clamp spring 2 and bolt 3 will change when a gap occurs between bolt 3 and bushing 1, self-adaptive adjustment is realized, the situation that the fitting gap between bushing 1 and bolt 3 increases, the vibration amplitude of bolt 3 becomes larger and the position of bushing 1 deviates under the condition of thermal expansion and cold shrinkage in the traditional riveting scheme can be eliminated, and the internal deformation of bushing 1 can be prevented.

[0028] In the following, the most optimal embodiment of implementing the utility model will be described in more detail in combination with the drawings, so that the features and advantages of the utility model can be easily understood. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The utility model discloses a three-dimensional structure schematic diagram is shown as the utility model;

[0030] Figure 2 The utility model discloses a three-dimensional structure assembly schematic diagram is shown as the utility model about bushing and clamp spring;

[0031] Figure 3This is a three-dimensional structural assembly diagram of the bushing and retaining spring on the other side of the present invention.

[0032] Figure 4 The diagram shown is an enlarged three-dimensional structural schematic of the snap ring in this utility model.

[0033] Figure 5 The diagram shown is an enlarged three-dimensional structural schematic of the bushing in this utility model.

[0034] Label Explanation

[0035] 1. Bushing;

[0036] 11. Through hole;

[0037] 12. Rounded corners;

[0038] 13. Connection end;

[0039] 14. Positioning end;

[0040] 2. Snap ring;

[0041] 21. Claw;

[0042] 22. Concave surface;

[0043] 23. Circular perforation;

[0044] 24. Deformation groove;

[0045] 3. Bolts; Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0047] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components shown in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0048] Unless otherwise defined, technical terms or scientific terms used herein shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The use of the terms "first", "second" and similar terms in the application patent specification and claims does not necessarily indicate any order, quantity, or importance, but merely to distinguish different components. Similarly, the use of the terms "one" or "a" or "an" does not necessarily limit the quantity to one. The use of the terms "including", "containing", "comprising" and similar terms in the application patent specification and claims are intended to mean that the elements or objects in the process, method, article or apparatus include, but do not exclude, other elements or objects. The use of the terms "connected" or "coupled" or similar terms in the application patent specification and claims does not necessarily mean that the connection or coupling is direct or indirect, but can include electrical connection or coupling. The terms "upper", "lower", "left", "right", and the like are used only to indicate relative positions, and when the absolute positions of the described objects are changed, the relative positions may also be changed accordingly.

[0049] The utility model provides a can quick connection combined bush assembly for the connecting piece design process of automobile brake pedal, the utility model does not make the type of automobile brake pedal limit, but the structure of this can quick connection combined bush assembly is especially suitable for the requirement of the deformation of the internal through hole of the shaft sleeve caused by the position deviation of the bolt when the riveting bush is riveted on the brake support because of the insufficient locking force.

[0050] Generally, the can quick connection combined bush assembly provided by the utility model mainly includes: a bush 1, a clamp spring 2 and a bolt 3. Among them, referring to Figure 1 , the arrangement relationship of the bush 1, the clamp spring 2 and the bolt 3 is shown.

[0051] In order to solve the problem that the locking force between the riveted bush and the brake support in the background art is not as good as the bush assembled by welding, as the use time goes on, the bolt will cause the position deviation of the bush and the internal deformation of the bush due to thermal expansion and contraction and vibration, so that the bush does not have locking force, causing the loosening of the bolt, therefore, in the technical scheme provided by the embodiment, the clamp spring 2 is added to the top of the bush 1 and the connecting part of the bolt 3, the clamp spring 2 is deformed to form an interference fit between the bush 1 and the bolt 3 during assembly, the locking strength between the bolt 3 and the bush 1 is improved, at the same time, if thermal expansion and contraction occur, the angle of the concave curved surface 22 at the fitting position of the clamp spring 2 and the bolt 3 will change, self-adaptive adjustment is realized, the situation that the fitting gap between the bush 1 and the bolt 3 increases and the vibration amplitude of the bolt 3 becomes larger to cause the position deviation of the bush 1 under the condition of thermal expansion and contraction in the traditional riveting scheme can be eliminated, and the internal deformation of the bush 1 can be prevented.

[0052] As described above, the bushing 1 is T-shaped, the bushing 1 is centrally provided with a through hole 11 for passing the bolt 3, the top of the through hole 11 is provided with a round corner 12, the round corner 12 plays a guiding role for the deformation of the bolt 3 and the downward recessed surface 22, the bottom of the bushing 1 is a connecting end 13, the connecting end 13 is a part clamped in the brake support, the connecting end 13 needs to be hardened by heat treatment before riveting to increase wear resistance and improve the service life of this position, the top of the bushing 1 is a positioning end 14, the outer contour of the positioning end 14 can be polygonal or circular, and the outer diameter of the positioning end 14 is larger than that of the connecting end 13.

[0053] As described above, the clamp spring 2 is sleeved on the top of the bushing 1 outside the positioning end 14, the clamp spring 2 plays a role of limiting and locking the bolt 3, and improves the locking force between the bushing 1 and the bolt 3, the clamp spring 2 includes a clamping jaw 21, a downward recessed surface 22, a circular through hole 23 and a deformation groove 24, wherein the clamping jaw 21 is arranged at equal intervals around the bottom of the clamp spring 2, the clamping jaw 21 and the clamp spring 2 are arranged integrally, the overall strength is high, and the processing cost is low, the clamping jaw 21 is L-shaped, the top of the clamping jaw 21 is close to one side of the central axis of the bushing 1 and contacts the outer side wall of the positioning end 14, the top of the bottom of the clamping jaw 21 is close to the bottom of the positioning end 14, the bottom of the clamping jaw 21 is close to one side of the central axis of the bushing 1 and contacts the outer side wall of the connecting end 13, the clamp spring 2 is sleeved with the bushing 1 through the clamping jaw 21, the downward recessed surface 22 is located at the top of the clamp spring 2, and the downward recessed surface 22 is arranged instead of a plane to prevent individual deformation grooves 24 from being upwardly deformed during the process of passing the bolt in the middle of the clamp spring 2, and the upward bending of the joint of the clamp spring 2 and the bolt 3 will cause the installation position of the bolt 3 to be wrong, for example, under certain installation conditions: the top nut part of the bolt 3 cannot be in contact with the positioning end 14, and will cause the bolt 3 to be installed in an inclined position, it should be noted that the diameter of the circular through hole 23 is smaller than the diameter of the through hole 11, so that the downward recessed surface 22 can enter the through hole 11, and the sum of the diameter of the circular through hole 23 and the length of the deformation groove 24 is greater than the diameter of the through hole 11, so that the downward recessed surface 22 can be deformed more easily.

[0054] As described above, the bolt 3 is clamped in the middle of the clamp spring 2 and is in excessive cooperation with the through hole 11, the bottom of the bolt 3 passes through the bushing 1 downward along the through hole 11 and extends downward, the bottom of the bolt 3 is in transitional cooperation with the through hole 11, and the section of the bolt 3 in the bushing 1 can be a smooth rod or a threaded rod.

[0055] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A quick connect combination bushing assembly comprising: The utility model relates to a sleeve (1) is centrally provided with a through hole (11), the bottom of the sleeve (1) is a connecting end (13), and the top of the sleeve (1) is a positioning end (14). A clamping spring (2) is sleeved on the top of the sleeve (1) and located outside the positioning end (14). A bolt (3) is clamped in the middle of the clamping spring (2) and is in interference fit with the through hole (11), and the bottom of the bolt (3) passes through the sleeve (1) along the through hole (11) and is in excess fit with the through hole (11). The sleeve (1) is T-shaped, the outer diameter of the positioning end (14) is larger than that of the connecting end (13), and the outer contour of the positioning end (14) can be polygonal or circular.

2. The quick connect combination bushing assembly of claim 1, wherein, The bottom of the clamping spring (2) is provided with an integral clamping jaw (21), the clamping jaw (21) is L-shaped, the top of the clamping jaw (21) is in contact with the outer sidewall of the positioning end (14) on the side close to the central axis of the sleeve (1), the top end of the bottom of the clamping jaw (21) is in contact with the bottom of the positioning end (14), and the bottom of the clamping jaw (21) is in contact with the outer sidewall of the connecting end (13) on the side close to the central axis of the sleeve (1).

3. The quick connect combination bushing assembly of claim 2, wherein, The top of the clamping spring (2) is centrally provided with a concave surface (22), the concave surface (22) is centrally provided with a circular through hole (23), and the concave surface (22) is provided with deformation grooves (24) at equal intervals around the concave surface (22), and the deformation grooves (24) are communicated with the circular through hole (23).

4. The quick connect combination bushing assembly of claim 3, wherein, The diameter of the circular through hole (23) is smaller than that of the through hole (11), and the sum of the diameter of the circular through hole (23) and the length of the deformation groove (24) is greater than the diameter of the through hole (11).

5. The quick connect combination bushing assembly of claim 4, wherein, The section of the bolt (3) in the sleeve (1) is a smooth rod or a threaded rod.

6. The quick connect combination bushing assembly of claim 5, wherein, The top of the through hole (11) is provided with a round corner (12).

7. The quick connect combination bushing assembly of claim 6, wherein, ​

Images