Shaft sleeve for automobile connecting rod mechanism

Abstract

The utility model provides a shaft sleeve for an automobile connecting rod mechanism, which comprises a shaft sleeve body, a lubricating unit and a flow guide unit, the shaft sleeve body is internally provided with a shaft hole matched with a rotating shaft, the lubricating unit and the flow guide unit are arranged on the shaft sleeve body, the lubricating unit lubricates the contact surface of the shaft sleeve and the rotating shaft, and the flow guide unit communicates the lubricating unit. According to the utility model, the oil storage tank is arranged, so that the storage amount of the lubricating agent by the shaft sleeve is increased, the lubricating effect is better when the shaft sleeve is matched with the rotating shaft, and the matching precision of the shaft sleeve and the rotating shaft is improved; by arranging the axial oil groove and the circumferential oil groove, lubricating oil can evenly move into different oil storage grooves through the axial oil groove and the circumferential oil groove, abrasion caused by uneven distribution of the lubricating oil is avoided, the service life of the shaft sleeve and the service life of the rotating shaft are prolonged, the shaft sleeve is strengthened through the strengthening part, the abrasion resistance of the shaft sleeve is improved, and the service life of the rotating shaft is prolonged. And the service life of the shaft sleeve is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeves, in particular to a shaft sleeve for an automobile connecting rod mechanism. Background Art

[0002] Patent document CN216842715U discloses a glass fiber resin composite shaft sleeve, including an outer sleeve; a frame fixedly connected to the inner wall of the outer sleeve for increasing the overall strength; and an inner sleeve fixedly connected to the inner wall of the frame for contacting the outer wall of the through shaft. The utility model, by arranging the first clamping block and the second clamping block on the outer wall and the inner wall of the frame, cooperates with the first clamping groove on the outer sleeve and the second clamping groove on the outer wall of the inner sleeve, so that the three-layer structure will not be easily separated during use, and has a long service life. The first clamping groove and the second clamping groove are both in a closed state facing the two opening ends, which can avoid axial movement and disengagement. The frame is composed of glass fiber impregnated with synthetic resin, which reduces the overall metal usage, that is, ensures the overall strength and achieves lightweight. Metal-based modified polytetrafluoroethylene is used as the inner sleeve, which has a low friction coefficient and very good self-lubricating performance. The oil injection hole is matched with multiple sets of triangular oil storage tanks, and the lubrication effect is very good.

[0003] However, the oil storage grooves of the shaft sleeve are not connected to each other, which will lead to uneven distribution of lubricant, increase the friction between the contact surface of the shaft and the shaft sleeve, and reduce the service life of the shaft and the shaft sleeve. Therefore, it is necessary to improve such a structure to overcome the above defects. Utility Model Content

[0004] The purpose of the utility model is to provide a shaft sleeve for an automobile connecting rod mechanism to solve the problems raised in the above background technology.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A shaft sleeve for a connecting rod mechanism of an automobile comprises a shaft sleeve body, a shaft hole matched with a rotating shaft is arranged in the shaft sleeve body, and a lubrication unit and a flow guide unit arranged on the shaft sleeve body, wherein the lubrication unit lubricates the contact surface between the shaft sleeve and the rotating shaft, and the flow guide unit connects the lubrication unit to ensure uniform distribution of lubricating oil;

[0007] The lubrication unit comprises an oil storage tank, which is provided with a plurality of oil storage tanks. The oil storage tanks are symmetrically formed on the surface of the shaft hole, and the oil storage tanks are recessed radially toward the outside of the sleeve body. A lubricating oil storage space is provided in the oil storage tanks.

[0008] The present utility model is further configured such that the flow guiding unit includes a circumferential oil groove and an axial oil groove. The circumferential oil grooves are respectively arranged on the surface of the shaft hole. The axial oil groove is recessed toward the outer side of the bushing body along the axial direction and extends circumferentially. The circumferential oil groove is connected to the oil storage groove. The axial oil groove is arranged on the surface of the shaft hole. There are a pair of axial oil grooves, which are recessed toward the outer side of the bushing body and extend axially. The axial oil groove is connected to the circumferential oil groove. The circumferential oil groove and the axial oil groove provide a flow space for the lubricating oil.

[0009] The present utility model is further configured such that one end of the bushing body is provided with a chamfer structure.

[0010] The present utility model is further configured such that a strengthening part is arranged inside the bushing body. The strengthening part is connected to the inner wall of the shaft hole and is made of copper alloy.

[0011] The present utility model is further configured such that the shape of the oil storage groove is semi-circular, and the shapes of the axial oil groove and the circumferential oil groove are strip-shaped, and the widths of the axial oil groove and the circumferential oil groove are the same.

[0012] The present utility model is further configured such that the bushing body is made of stainless steel.

[0013] The present utility model is further configured such that the circumferential oil grooves are arranged in parallel, and the circumferential oil groove is perpendicular to the axial oil groove.

[0014] The advantages of the present utility model are as follows:

[0015] 1. By providing the oil storage groove in the present utility model, the storage capacity of the lubricant in the bushing is increased, so that the lubrication effect is better when the bushing cooperates with the rotating shaft, and the matching accuracy between the bushing and the rotating shaft is increased.

[0016] 2. By providing the circumferential oil groove and the axial oil groove in the present utility model, the lubricating oil can be evenly moved to different oil storage grooves through the axial oil groove and the circumferential oil groove, avoiding abrasion caused by uneven distribution of the lubricating oil, and increasing the service life of the bushing and the rotating shaft.

[0017] 3. By providing the strengthening part to strengthen the bushing in the present utility model, the wear resistance of the bushing is increased, and the service life of the bushing is effectively increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the bushing for an automotive connecting rod mechanism proposed by the present utility model.

[0019] Figure 2 is a sectional view of the bushing for an automotive connecting rod mechanism proposed by the present utility model.

[0020] Numerical reference numbers: bushing body 100, shaft hole 101, oil storage groove 110, circumferential oil groove 210, axial oil groove 220 Specific embodiments

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0022] As Figure 1-2 shown, a bushing for an automotive connecting rod mechanism proposed by the present utility model includes a bushing body 100. An axial hole 101 for mating with a rotating shaft is provided in the bushing body. The lubrication unit and the diversion unit are further provided on the bushing body. The lubrication unit lubricates the contact surface between the bushing and the rotating shaft, and the diversion unit connects the lubrication unit to ensure uniform distribution of lubricating oil;

[0023] The lubrication unit includes oil storage grooves 110. A plurality of such oil storage grooves are provided. The oil storage grooves are symmetrically formed on the surface of the axial hole respectively. The oil storage grooves are recessed radially towards the outside of the bushing body. A lubricating oil storage space is provided in the oil storage grooves. The lubricating oil lubricates the contact surface between the rotating shaft and the bushing, reduces friction, prevents overheating, and thus increases the service life of the rotating shaft and the bushing.

[0024] In this embodiment, the diversion unit includes a circumferential oil groove 210 and an axial oil groove 220. The circumferential oil grooves are respectively provided on the surface of the axial hole. The axial oil groove is recessed towards the outside of the bushing body along the axial direction and extends circumferentially. The circumferential oil groove is connected to the oil storage groove. The axial oil groove is provided on the surface of the axial hole. A pair of axial oil grooves are provided. The axial oil groove is recessed towards the outside of the bushing body and extends axially. The axial oil groove is connected to the circumferential oil groove. The circumferential oil groove and the axial oil groove provide a flow space for the lubricating oil. The lubricating oil flows evenly into each oil storage groove through the circumferential oil groove and the axial oil groove, ensuring uniform distribution of the lubricating oil.

[0025] In this embodiment, a chamfer structure is provided at one end of the bushing body.

[0026] In this embodiment, a strengthening portion is provided inside the bushing body. The strengthening portion is connected to the inner wall of the shaft hole. The strengthening portion is made of brass, which has strong wear resistance and can maintain good performance for a long time, effectively increasing the service life of the bushing.

[0027] In this embodiment, the shape of the oil storage groove is semi-circular, and the shapes of the axial oil groove and the circumferential oil groove are strip-shaped, and the widths of the axial oil groove and the circumferential oil groove are the same.

[0028] In this embodiment, the bushing body is made of stainless steel material. Stainless steel has excellent strength, and the stainless steel bushing can well protect the rotating shaft.

[0029] In this embodiment, the circumferential oil grooves are arranged in parallel, and the circumferential oil grooves are perpendicular to the axial oil groove.

[0030] In the description of the present invention, it should be noted that when terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", "left", "right" appear, they should be understood as based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, when terms such as "first" and "second" appear, they are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection" should be understood in a broad sense. For example, "connection" 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, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A shaft sleeve for a connecting rod mechanism of an automobile, comprising a shaft sleeve body, wherein a shaft hole cooperating with a rotating shaft is provided in the shaft sleeve body, characterized in that: It also includes a lubrication unit and a flow guide unit arranged on the sleeve body, the lubrication unit lubricates the contact surface between the sleeve and the rotating shaft, and the flow guide unit connects the lubrication units to ensure uniform distribution of lubricating oil; The lubrication unit includes an oil storage tank, which is provided with a plurality of oil storage tanks, which are symmetrically formed on the surface of the shaft hole, and the oil storage tanks are recessed radially toward the outer side of the sleeve body, and a lubricating oil storage space is provided in the oil storage tank; The guide unit includes a circumferential oil groove and an axial oil groove, the circumferential oil groove is respectively arranged on the surface of the shaft hole, the axial oil groove is recessed axially toward the outer side of the sleeve body and extends circumferentially, the circumferential oil groove is connected to the oil storage groove, the axial oil groove is arranged on the surface of the shaft hole, a pair of axial oil grooves are provided, the axial oil groove is recessed toward the outer side of the sleeve body and extends axially, the axial oil groove is connected to the circumferential oil groove, and the circumferential oil groove and the axial oil groove provide flow space for the lubricating oil.

2. The shaft sleeve for automobile connecting rod mechanism according to claim 1, characterized in that: One end of the sleeve body is provided with a chamfer structure.

3. The shaft sleeve for automobile connecting rod mechanism according to claim 1, characterized in that: A strengthening part is arranged inside the shaft sleeve body, the strengthening part is connected to the inner wall of the shaft hole, and the strengthening part is made of copper alloy.

4. The shaft sleeve for automobile connecting rod mechanism according to claim 1, characterized in that: The oil storage groove is semicircular in shape, the axial oil groove and the circumferential oil groove are long strips in shape, and the widths of the axial oil groove and the circumferential oil groove are consistent.

5. The shaft sleeve for automobile connecting rod mechanism according to claim 1, characterized in that: The sleeve body is made of stainless steel.

6. The shaft sleeve for automobile connecting rod mechanism according to claim 4, characterized in that: The circumferential oil grooves are arranged in parallel, and the circumferential oil grooves and the axial oil grooves are arranged perpendicularly.

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