Balance shaft bushing

Abstract

The utility model discloses a balance shaft bush which comprises at least two bush split bodies, the bush split bodies are arranged at intervals in the circumferential direction, and every two adjacent bush split bodies are connected through an elastic connecting part. Every two adjacent bush split bodies are connected through the corresponding elastic connecting part, a standard cylindrical structure can be formed after the bush split bodies are installed on the balance shaft, the structure is simple, and compared with a conventional integrated balance shaft bush, the press-fitting force is greatly reduced, and the assembling difficulty is lowered.

Description

Technical Field

[0001] The utility model relates to an automobile vibration reduction component, in particular to a balancing shaft bushing. Background Art

[0002] like Figure 1a and Figure 1b As shown in FIG. 1 , the most common balancing shaft bushings on the market are generally cylindrical structures with notches, including a metal frame and elastic layers arranged on both sides of the metal frame. Figure 2 As shown in the figure, after the common balance shaft bushing is installed on the balance shaft, the outer periphery is clamped and fixed by a pair of semicircular metal tiles. The advantages of this type of bushing are simple structure and convenient production and manufacturing, but the disadvantages are that it is difficult to press-fit, it is easy to jump out axially, and it has high requirements for the surrounding metal structure. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a balancing shaft bushing which has a simple structure, a small pressing force and is conducive to reducing the difficulty of assembly.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A balancing shaft bushing comprises at least two bushing parts, each of which is arranged at intervals along the circumferential direction, and two adjacent bushing parts are connected by an elastic connecting part to form a complete ring shape.

[0006] As a further improvement of the above technical solution: the bushing split body includes a metal frame, and elastic layers are provided on both inner and outer sides of the metal frame.

[0007] As a further improvement of the above technical solution: a plurality of grooves are arranged on the outer elastic layer at intervals along the axial direction, and a protrusion is formed between two adjacent grooves.

[0008] As a further improvement of the above technical solution: the outer elastic layer and the metal skeleton are both connected to the elastic connecting part.

[0009] As a further improvement of the above technical solution: the metal skeleton includes a plurality of skeleton sections arranged at intervals along the circumferential direction.

[0010] As a further improvement of the above technical solution: a channel is provided on the metal frame to connect the elastic layers on the inner and outer sides into one.

[0011] As a further improvement of the above technical solution: the elastic layer and the elastic connecting part are made of rubber material.

[0012] As a further improvement of the above technical solution: the elastic connecting parts are arranged at the two axial ends of the bushing split body.

[0013] As a further improvement of the above technical solution: the elastic connecting part is a C-shaped structure.

[0014] Compared with the prior art, the advantages of the present invention are: the balancing shaft bushing disclosed in the present invention includes at least two bushing splits and are arranged at intervals in the circumferential direction. The two adjacent bushing splits are connected by an elastic connecting part. After being installed on the balancing shaft, a standard cylindrical structure can be formed. The structure is simple. Compared with the conventional one-piece balancing shaft bushing, the pressing force is greatly reduced, which is conducive to reducing the difficulty of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1a It is a schematic diagram of the axial cross-sectional structure of an existing balancing shaft bushing.

[0016] Figure 1b It is a schematic diagram of the radial cross-sectional structure of an existing balancing shaft bushing.

[0017] Figure 2 It is a schematic diagram of the structure in which an existing balancing shaft bushing is installed on a balancing shaft.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of a balancing shaft bushing of the utility model.

[0019] Figure 4 It is a schematic diagram of the axial cross-sectional structure of the balancing shaft bushing of the utility model.

[0020] Figure 5 It is a schematic diagram of the radial cross-sectional structure of the balancing shaft bushing of the utility model.

[0021] The symbols in the figure represent:

[0022] 101. Balance shaft; 102. Metal tile cover;

[0023] 1. Bushing split; 11. Metal frame; 111. Channel; 12. Elastic layer; 121. Groove; 122. Protrusion; 2. Elastic connecting part. DETAILED DESCRIPTION

[0024] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Figures 3 to 5 An embodiment of the balancing shaft bushing of the utility model is shown. The balancing shaft bushing of this embodiment includes two bushing parts 1, which are arranged at intervals along the circumferential direction and connected to each other by an elastic connecting part 2 to form a complete ring. Of course, in other embodiments, the number of bushing parts 1 can be further increased, such as three, four, etc., which will not be repeated.

[0029] The balancing shaft bushing of this embodiment can form a standard cylindrical structure after being installed on the balancing shaft 101. The structure is simple, and the pressing force is greatly reduced compared to the conventional one-piece balancing shaft bushing, which helps to reduce the difficulty of assembly.

[0030] As a preferred embodiment, the bushing body 1 includes a metal frame 11 , and elastic layers 12 are provided on both inner and outer sides of the metal frame 11 .

[0031] Furthermore, in this embodiment, a plurality of grooves 121 are arranged at intervals along the axial direction on the outer elastic layer 12, and a protrusion 122 is formed between two adjacent grooves 121. The concave-convex structure on the outer elastic layer 12 is conducive to increasing the axial ejection force, improving the operational reliability and safety, and also reduces the requirements for the surrounding metal structure, which is conducive to the lightweight design of the whole vehicle, and also reduces the dead weight of the elastic layer 12 to a certain extent.

[0032] Furthermore, in this embodiment, the outer elastic layer 12 and the metal skeleton 11 are both connected to the elastic connecting portion 2, which is beneficial to improving the connection strength between the bushing parts 1, ensuring reliability, and also facilitating production.

[0033] Furthermore, in this embodiment, a channel 111 is provided on the metal frame 11 to connect the inner and outer elastic layers 12 as a whole. During the vulcanization process, the channel 11 facilitates the flow between the inner rubber and the outer rubber; after the vulcanization is completed, the metal frame 11 and the inner and outer elastic layers 12 can be effectively embedded together to avoid relative movement.

[0034] Of course, in other embodiments, the metal frame 11 may include multiple frame sections (not shown) spaced apart along the circumferential direction. The split structure of the metal frame 11 can further reduce the press-fitting force, reduce the difficulty of assembly, and also reduce the weight of the metal frame 11 to a certain extent.

[0035] Furthermore, in this embodiment, the elastic layer 12 and the elastic connection part 2 are made of rubber material. Preferably, the inner and outer elastic layers 12, the metal skeleton 11 and the elastic connection part 2 are connected into one body by vulcanization.

[0036] Furthermore, in this embodiment, the elastic connection parts 2 are disposed at the two axial ends of the bushing split body 1 , which is conducive to reliably connecting two adjacent bushing split bodies 1 as a whole, while reducing the axial size of the elastic connection part 2 itself.

[0037] As a preferred embodiment, the elastic connection part 2 is a C-shaped structure, which is conducive to reliably connecting two adjacent bushing parts 1 into a whole, and is easy to deform when subjected to pressure during the assembly process.

[0038] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A balancing shaft bushing, Features: It comprises at least two bushing parts (1), each bushing part (1) is arranged at intervals along the circumferential direction, and two adjacent bushing parts (1) are connected via an elastic connecting part (2) to form a complete ring shape.

2. The balancing shaft bushing according to claim 1, Features: The bushing split body (1) comprises a metal frame (11), and elastic layers (12) are provided on both inner and outer sides of the metal frame (11).

3. The balancing shaft bushing according to claim 2, Features: A plurality of grooves (121) are arranged at intervals along the axial direction on the outer elastic layer (12), and a protrusion (122) is formed between two adjacent grooves (121).

4. The balancing shaft bushing according to claim 2, Features: The outer elastic layer (12) and the metal skeleton (11) are both connected to the elastic connecting portion (2).

5. The balancing shaft bushing according to claim 2, Features: The metal skeleton (11) comprises a plurality of skeleton sections which are arranged at intervals along the circumferential direction.

6. The balancing shaft bushing according to claim 2, Features: The metal frame (11) is provided with a channel (111) so that the elastic layers (12) on the inner and outer sides are connected as one.

7. The balancing shaft bushing according to claim 2, Features: The elastic layer (12) and the elastic connecting portion (2) are made of rubber material.

8. The balancing shaft bushing according to claim 7, Features: The elastic layer (12), the elastic connecting portion (2) and the metal skeleton (11) are vulcanized and connected as a whole.

9. The balancing shaft bushing according to any one of claims 1 to 8, Features: The elastic connection portion (2) is arranged at two axial ends of the bushing split body (1).

10. The balancing shaft bushing according to any one of claims 1 to 8, Features: The elastic connecting portion (2) is a C-shaped structure.

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