Oil pump shaft of automobile gearbox

Abstract

The oil pump shaft of the automobile gearbox comprises a shaft body and a spline sleeve, a first step, a second step, a third step and a fourth step are sequentially arranged on the shaft body, a clamp spring groove is formed in the end, close to the first step, of the shaft body, a spline meshing ring cavity is coaxially formed in the connecting position of the first step and the second step, and the spline meshing ring cavity is connected with the spline sleeve. The spline housing is fixedly arranged outside the first step in a sleeving mode through a clamping spring, one end of the spline housing is located in the spline meshing ring cavity, and the clamping spring is clamped in the clamping spring groove; by means of the overall arrangement, it can be guaranteed that the self-lubricating effect is achieved at the joint of the spline housing and related parts of an automobile, in this way, the overall abrasive resistance can be improved, the service life of the spline housing can be prolonged, after the spline housing is abraded, the spline housing can be independently replaced, and therefore unnecessary waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts, especially to an oil pump shaft of an automobile gearbox. BACKGROUND

[0002] It is known that the automobile gearbox oil pump is a kind of key components, which is responsible for transmitting power to the gearbox oil to realize the normal operation of the gearbox.

[0003] The oil pump shaft is a key part of the gearbox oil pump.

[0004] However, the spline part of the existing oil pump shaft of the automobile gearbox is very easy to be worn in the process of use, and after wearing, the entire oil pump shaft needs to be replaced, thereby causing unnecessary waste.

[0005] Therefore, it is very necessary to invent an oil pump shaft of an automobile gearbox. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above technical problems, the utility model provides a kind of oil pump shaft of automobile gearbox adopts technical scheme: a kind of oil pump shaft of automobile gearbox, including shaft body and spline sleeve, wherein: the shaft body is sequentially provided with step one, step two, step three and step four, the end of the shaft body close to step one is provided with snap spring slot, the connecting place of step one and step two is coaxially provided with spline engagement ring cavity, the spline sleeve is fixed by snap spring cover and set in step one outside, one end of the spline sleeve is in spline engagement ring cavity, the snap spring is clamped in snap spring slot;

[0007] The outer surface of the spline sleeve is uniformly provided with an outer spline groove;

[0008] The inside of the spline engagement ring cavity is uniformly provided with a clamping groove corresponding to the protrusion on the outer surface of the spline sleeve, and the protrusion on the outer surface of the spline sleeve is clamped in the corresponding clamping groove.

[0009] The outer periphery of the snap spring is provided with a spline groove two corresponding to the outer spline groove.

[0010] The outer spline groove is embedded with self-lubricating material, and the self-lubricating material is fixedly connected with the spline sleeve.

[0011] The outer surface of the step one is uniformly provided with a spline groove, and the step one is clamped with the spline sleeve through the spline groove.

[0012] The inner surface of the spline sleeve is uniformly provided with an inner spline groove, and the inner spline groove and the outer spline groove are alternately arranged, the inner spline groove and the protrusion on the outer surface of the spline sleeve are one-to-one coincident, and the spline sleeve is coaxially engaged with the spline groove on the step one through the inner spline groove.

[0013] The clamping spring comprises an inner clamping spring and an outer clamping spring, the inner clamping spring is fixedly connected with the outer clamping spring coaxially, the spline grooves are evenly arranged on the outer circumferential surfaces of the inner clamping spring and the outer clamping spring, the inner clamping spring is clamped in the clamping spring groove, and the outer clamping spring is located outside the clamping spring groove and flush with the end face of the shaft body close to the first step.

[0014] The outer surfaces of the spline sleeve and the clamping spring are provided with wear-resistant coating.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The present application has the following advantages: the spline sleeve and the automobile related parts are connected, and the spline sleeve has self-lubricating effect, so that the overall wear resistance and service life are improved, and the spline sleeve can be replaced individually when the spline sleeve is worn, thereby reducing unnecessary waste. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic view of the present application.

[0018] Figure 2 It is the schematic view of the explosion structure of the present application.

[0019] Figure 3 It is the spline sleeve and the spline engagement ring cavity connection structure schematic view of the present application.

[0020] Figure 4 It is the spline engagement ring cavity local section structure schematic view of the present application.

[0021] Figure 5 It is the spline sleeve structure schematic view of the present application.

[0022] In the figure:

[0023] Shaft body 1, first step 2, second step 3, third step 4, fourth step 5, clamping spring groove 6, spline groove 7, spline engagement ring cavity 8, spline sleeve 9, outer spline groove 10, inner spline groove 11, inner clamping spring 12, outer clamping spring 13, spline groove two 14, self-lubricating material 15. DETAILED DESCRIPTION

[0024] In order to make the personnel in the technical field better understand the present application, the technical scheme in the embodiment of the present application will be described clearly and completely below, obviously, the described embodiment is only a part of the embodiment of the present application, not all. Based on the embodiment in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0025] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] The utility model is further described below in combination with the drawings:

[0027] Embodiments

[0028] Reference Figures 1-5 An oil pump shaft of an automobile gearbox, comprising a shaft body 1 and a spline sleeve 9, wherein: the shaft body 1 is sequentially provided with a step one 2, a step two 3, a step three 4 and a step four 5, a circlip groove 6 is formed in one end of the shaft body 1 close to the step one 2, a spline engagement ring cavity 8 is coaxially formed at the connection between the step one 2 and the step two 3, the spline sleeve 9 is fixedly sleeved on the outside of the step one 2 by a circlip, one end of the spline sleeve 9 is located in the spline engagement ring cavity 8, so as to position the spline sleeve 9 through the spline engagement ring cavity 8 and ensure the strength between the spline sleeve 9 and the shaft body 1, and the circlip is clamped in the circlip groove 6, so as to ensure the stability between the spline sleeve 9 and the shaft body 1 through the circlip;

[0029] In the embodiment, the outer surface of the spline sleeve 9 is uniformly provided with an outer spline groove 10, such as a circular spline structure;

[0030] In the embodiment, the inside of the spline engagement ring cavity 8 is uniformly provided with a clamping groove corresponding to the protrusion on the outer surface of the spline sleeve 9, and the protrusion on the outer surface of the spline sleeve 9 is clamped in the corresponding clamping groove, so as to improve the strength between the spline sleeve 9 and the shaft body 1, and prevent the spline sleeve 9 from rotating;

[0031] In the embodiment, the outer circumferential surface of the circlip is provided with a spline groove two 14 corresponding to the outer spline groove 10, so that the circlip and the spline sleeve 9 form a whole, which is convenient for docking with the related parts of the automobile, and better fixes and limits the spline sleeve 9, preventing the spline sleeve 9 from loosening and falling off.

[0032] In the embodiment, the outer spline groove 10 is embedded with self-lubricating material 15, such as metal sulfide, graphite, polymer material, etc., so as to ensure the lubricity of the outer spline groove 10 at the interface with the automobile related parts, and reduce wear; the self-lubricating material 15 is fixedly connected with the spline sleeve 9.

[0033] In the embodiment, the outer surface of the step one 2 is uniformly provided with the spline groove 7, and the step one 2 is clamped with the spline sleeve 9 through the spline groove 7; the inner surface of the spline sleeve 9 is uniformly provided with the inner spline groove 11, and the inner spline groove 11 and the outer spline groove 10 are arranged in an alternating manner; the inner spline groove 11 is in one-to-one correspondence with the protrusion on the outer surface of the spline sleeve 9, and the spline sleeve 9 is coaxially engaged and connected with the spline groove 7 on the step one 2 through the inner spline groove 11, so as to limit the spline sleeve 9, ensure the stability of the spline sleeve 9, prevent the spline sleeve 9 from rotating, and improve the strength of the spline sleeve 9.

[0034] In the embodiment, the clamp spring includes an inner clamp spring 12 and an outer clamp spring 13, the inner clamp spring 12 and the outer clamp spring 13 are coaxially fixedly connected, the spline groove two 14 is uniformly arranged on the outer circumferential surface of the inner clamp spring 12 and the outer clamp spring 13, the inner clamp spring 12 is clamped in the clamp spring groove 6, and the outer clamp spring 13 is located outside the clamp spring groove 6 and flush with the end surface of the shaft body 1 close to the step one 2, so that the inner clamp spring 12 and the outer clamp spring 13 fix the spline sleeve 9, and the outer clamp spring 13 protects the port of the shaft body 1, so as to avoid wear of the port of the shaft body 1; the outer diameters of the inner clamp spring 12 and the outer clamp spring 13 are the same as the outer diameter of the spline sleeve 9, the inner diameter of the inner clamp spring 12 is smaller than the inner diameter of the outer clamp spring 13, and the inner diameter of the outer clamp spring 13 is larger than the diameter of the shaft body 1 close to the step one 2.

[0035] In the embodiment, the outer surfaces of the spline sleeve 9 and the clamp spring are provided with wear-resistant coatings, so as to improve the wear resistance of the spline sleeve 9 and the clamp spring.

[0036] The technical scheme disclosed in the utility model, or the similar technical scheme designed by the person skilled in the art under the inspiration of the technical scheme of the utility model, and achieving the above technical effects, all fall within the protection scope of the utility model.

Claims

1. An oil pump shaft for an automotive transmission, characterized by: The utility model provides a shaft body (1) and spline sleeve (9) including, wherein: the shaft body (1) is sequentially provided with step one (2), step two (3), step three (4) and step four (5), the shaft body (1) is close to the end of step one (2) and is set up with snap spring groove (6), the junction of step one (2) and step two (3) is set up with spline engagement ring cavity (8), the spline sleeve (9) is fixed with the snap spring cover and is set in step one (2) outside, one end of the spline sleeve (9) is in spline engagement ring cavity (8), the snap spring is in snap spring groove (6) and is clamped, The outer surface of the spline sleeve (9) is uniformly provided with an outer spline groove (10). The inside of the spline engagement ring cavity (8) is uniformly provided with a clamping groove corresponding to the protrusion on the outer surface of the spline sleeve (9), and the protrusion on the outer surface of the spline sleeve (9) is clamped in the corresponding clamping groove. The outer periphery of the snap spring is provided with a spline groove two (14) corresponding to the outer spline groove (10). The outer spline groove (10) is embedded with self-lubricating material (15), and the self-lubricating material (15) is fixedly connected with the spline sleeve (9).

2. An oil pump shaft for an automotive transmission as defined in claim 1, characterized in that: The outer surface of the step one (2) is uniformly provided with a spline groove (7), and the step one (2) is clamped with the spline sleeve (9) through the spline groove (7).

3. An oil pump shaft for an automotive transmission as defined in claim 2, characterized in that: The inner surface of the spline sleeve (9) is uniformly provided with an inner spline groove (11), and the inner spline groove (11) and the outer spline groove (10) are alternately arranged, the inner spline groove (11) is one-to-one coincided with the protrusion on the outer surface of the spline sleeve (9), and the spline sleeve (9) is coaxially engaged with the spline groove (7) on the step one (2) through the inner spline groove (11).

4. An oil pump shaft for an automotive transmission as defined in claim 1, characterized in that: The snap spring includes an inner snap spring (12) and an outer snap spring (13), the inner snap spring (12) and the outer snap spring (13) are coaxially fixedly connected, the spline groove two (14) is uniformly provided on the outer periphery of the inner snap spring (12) and the outer snap spring (13), the inner snap spring (12) is clamped in the snap spring groove (6), and the outer snap spring (13) is outside the snap spring groove (6) and flush with the end surface of the shaft body (1) close to the step one (2).

5. An oil pump shaft for an automotive transmission as defined in claim 1, characterized in that: The outer surfaces of the spline sleeve (9) and the snap spring are provided with wear-resistant coatings.

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