Lightweight hollow spline shaft
By designing a lightweight hollow spline shaft, the problems of heavy spline shaft weight and high material cost are solved, force uniformity and service life are improved, and automobile energy consumption is reduced.
Patent Information
- Application Number
- CN202423157678.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The existing spline shaft is heavy and has high material cost, which leads to increased vehicle weight and energy consumption. At the same time, the force is uneven and the service life is short.
A lightweight hollow spline shaft is designed by setting a hollow cavity through the spline shaft body and combining it with an optimized thirty-six-gear structure, including main thirty-six gears, auxiliary thirty-six gears, spline through-grooves, etc., to achieve uniform force and weight reduction.
The weight and material cost of the spline shaft are reduced, the energy consumption of the vehicle is reduced, and the service life of the spline shaft is increased.
Smart Images
Figure CN223359666U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spline shafts, in particular to the technical field of lightweight hollow spline shafts. Background Art
[0002] The automotive transmission spline shaft is a critical component in a vehicle. Its primary function is to transmit power, enabling the engine's power to be transferred to the wheels, thereby propelling the vehicle. Existing spline shafts are typically made of materials such as steel, and are connected to other components via spline protrusions and grooves during use. Due to their structure, traditional spline shafts are prone to uneven force and have a short service life. Traditional spline shafts are generally solid, heavy, and have high material costs, which increases the vehicle's own weight and increases energy consumption during driving. Summary of the Invention
[0003] The purpose of this utility model is to solve the problems in the existing technology and propose a lightweight hollow spline shaft. The weight of the spline shaft can be effectively reduced by setting a hollow cavity along the axis of the spline shaft body, thereby reducing material costs and reducing automobile energy consumption. By optimizing the thirty-six gear structure, the spline shaft body is ensured to be evenly stressed, which is beneficial to improving the service life of the spline shaft.
[0004] To achieve the above-mentioned objectives, the utility model proposes a lightweight hollow spline shaft, comprising a spline shaft body, a hollow cavity, a tapered transition section, a main thirty-six gears, a secondary thirty-six gears, a reduced diameter arc section, a spline through-groove, a spline half-groove, a thickened middle limit section, a thickened outer limit section and an annular groove, wherein the spline shaft body is provided with a hollow cavity along the axis line, the spline shaft body is provided with a tapered transition section on the left side, the main thirty-six gears are provided on the left side of the tapered transition section, the secondary thirty-six gears are provided on the left side of the main thirty-six gears, a reduced diameter arc section is provided between the main thirty-six gears and the secondary thirty-six gears, a spline through-groove is provided axially on the outer surface of the secondary thirty-six gears, a spline half-groove is provided on the outer surface of the main thirty-six gears corresponding to the spline through-groove, a thickened middle limit section is provided in the middle part of the spline shaft body, a plurality of thickened outer limit sections are evenly provided on the right side of the spline shaft body, and an annular groove is provided between adjacent thickened outer limit sections.
[0005] Preferably, a shrinkage ring groove is provided at the right end of the thickened middle limiting section, a spacing limiting section is provided at the left end of the thickened middle limiting section, and annular limiting grooves are provided at both ends of the spacing limiting section.
[0006] Preferably, a reduced diameter cavity section is provided at the left end of the hollow cavity along the tapered transition section to the left, and the axis lines of the hollow cavity and the reduced diameter cavity section are located on the same straight line.
[0007] Preferably, the outer diameters of the main thirty-six gears and the auxiliary thirty-six gears are the same, the thickness of the auxiliary thirty-six gears is smaller than the thickness of the main thirty-six gears, an optical axis segment is extended on the left side of the auxiliary thirty-six gears, the diameter of the optical axis segment is smaller than the outer diameter of the auxiliary thirty-six gears, and the right end of the spline through-groove is extended and set on the outer side surface of the optical axis segment.
[0008] Preferably, the number of the thickened outer limiting sections is at least three, and the ends of the thickened outer limiting sections are provided with chamfered corners.
[0009] The beneficial effects of the present invention are as follows: the present invention combines a spline shaft body, a hollow cavity, a tapered transition section, a main thirty-six gears, a sub-thirty-six gears, a reduced diameter arc section, a spline through-groove, a spline half-groove, a thickened middle limit section, a thickened outer limit section and an annular groove, and after experimental optimization, can effectively reduce the weight of the spline shaft through the hollow cavity set along the axis line in the spline shaft body, thereby reducing material costs and reducing automobile energy consumption. By optimizing the thirty-six gear structure, the spline shaft body is ensured to be evenly stressed, which is beneficial to improving the service life of the spline shaft.
[0010] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the main structure of the lightweight hollow spline shaft of the utility model;
[0012] Figure 2 It is a schematic diagram of the main cross-sectional structure of the lightweight hollow spline shaft of the utility model.
[0013] In the figure: 1-spline shaft, 2-hollow cavity, 3-conical transition section, 4-main thirty-six gears, 5-secondary thirty-six gears, 6-reduced arc section, 7-spline through groove, 8-spline half groove, 9-thickened middle limit section, 10-thickened outer limit section, 11-annular groove. DETAILED DESCRIPTION
[0014] See Figure 1 and Figure 2The utility model discloses a lightweight hollow spline shaft, comprising a spline shaft body 1, a hollow cavity 2, a tapered transition section 3, a main thirty-six gear 4, a sub-thirty-six gear 5, a reduced diameter arc section 6, a spline through-groove 7, a spline half-groove 8, a thickened middle limiting section 9, a thickened outer limiting section 10 and an annular groove 11. The spline shaft body 1 is provided with a hollow cavity 2 along the axis line, the left side of the spline shaft body 1 is provided with a tapered transition section 3, the left side of the tapered transition section 3 is provided with the main thirty-six gear 4, the left side of the main thirty-six gear 4 is provided with the sub-thirty-six gear 5, a reduced diameter arc section 6 is provided between the main thirty-six gear 4 and the sub-thirty-six gear 5, the outer surface of the sub-thirty-six gear 5 is axially provided with a spline through-groove 7, the outer surface of the main thirty-six gear 4 is provided with a spline half-groove 8 corresponding to the spline through-groove 7, the middle part of the spline shaft body 1 is provided with a thickened middle limiting section 9, and the right side of the spline shaft body 1 is uniformly Several thickened outer limiting sections 10 are provided, and annular grooves 11 are provided between adjacent thickened outer limiting sections 10. The right end of the thickened middle limiting section 9 is provided with a shrinkage ring groove, and the left end of the thickened middle limiting section 9 is provided with a spacing limiting section. Both ends of the spacing limiting section are provided with annular limiting grooves. The left end of the hollow cavity 2 is provided with a reduced diameter cavity section to the left along the tapered transition section 3. The axial center lines of the hollow cavity 2 and the reduced diameter cavity section are located on the same straight line. The outer diameters of the main thirty-six gears 4 and the auxiliary thirty-six gears 5 are the same. The thickness of the auxiliary thirty-six gears 5 is smaller than the thickness of the main thirty-six gears 4. An optical axis section is extended to the left side of the auxiliary thirty-six gears 5. The diameter of the optical axis section is smaller than the outer diameter of the auxiliary thirty-six gears 5. The right end of the spline through-groove 7 is extended and provided on the outer side surface of the optical axis section. There are at least three thickened outer limiting sections 10, and the end of the thickened outer limiting section 10 is provided with a chamfer.
[0015] Beneficial effects of the present invention: The present invention combines the spline shaft body 1, the hollow cavity 2, the tapered transition section 3, the main thirty-six gears 4, the auxiliary thirty-six gears 5, the reduced diameter arc section 6, the spline through-groove 7, the spline half-groove 8, the thickened middle limit section 9, the thickened outer limit section 10 and the annular groove 11 together, and after experimental optimization, can effectively reduce the weight of the spline shaft through the hollow cavity 2 set along the axis line inside the spline shaft body 1, thereby reducing material costs and reducing automobile energy consumption. Through the optimized thirty-six gear structure, the spline shaft body 1 is ensured to be evenly stressed, which is beneficial to improving the service life of the spline shaft.
[0016] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the scope of protection of the present invention.
Claims
1. Lightweight hollow spline shaft, characterized by: The invention comprises a spline shaft body (1), a hollow cavity (2), a tapered transition section (3), a main thirty-six gears (4), a sub-thirty-six gears (5), a reduced diameter arc section (6), a spline through-groove (7), a spline half-groove (8), a thickened middle limit section (9), a thickened outer limit section (10) and an annular groove (11), wherein the spline shaft body (1) is provided with a hollow cavity (2) penetrating along the axis, the spline shaft body (1) is provided with a tapered transition section (3) on the left side, the main thirty-six gears (4) are provided on the left side of the tapered transition section (3), and the main thirty-six gears (4) are provided with a tapered transition section (3) on the left side. A pair of thirty-six gears (5), a reduced diameter arc section (6) is provided between the main thirty-six gears (4) and the pair of thirty-six gears (5), a spline through-groove (7) is axially provided on the outer surface of the pair of thirty-six gears (5), a spline half-groove (8) is provided on the outer surface of the main thirty-six gears (4) corresponding to the spline through-groove (7), a thickened middle limit section (9) is provided in the middle of the spline shaft (1), a plurality of thickened outer limit sections (10) are evenly provided on the right side of the spline shaft (1), and an annular groove (11) is provided between adjacent thickened outer limit sections (10).
2. The lightweight hollow spline shaft according to claim 1, wherein: The right end of the thickened middle limiting section (9) is provided with a shrinkage ring groove, the left end of the thickened middle limiting section (9) is provided with a spacing limiting section, and both ends of the spacing limiting section are provided with annular limiting grooves.
3. The lightweight hollow spline shaft according to claim 1, wherein: A reduced diameter cavity section is provided at the left end of the hollow cavity (2) along the conical transition section (3) to the left, and the axis lines of the hollow cavity (2) and the reduced diameter cavity section are located on the same straight line.
4. The lightweight hollow spline shaft according to claim 1, wherein: The outer diameters of the main thirty-six gears (4) and the auxiliary thirty-six gears (5) are the same, the thickness of the auxiliary thirty-six gears (5) is smaller than the thickness of the main thirty-six gears (4), an optical axis section is extended on the left side of the auxiliary thirty-six gears (5), the diameter of the optical axis section is smaller than the outer diameter of the auxiliary thirty-six gears (5), and the right end of the spline through-groove (7) is extended and arranged on the outer side surface of the optical axis section.
5. The lightweight hollow spline shaft according to claim 1, wherein: The number of the thickened outer limiting sections (10) is at least three, and the ends of the thickened outer limiting sections (10) are provided with chamfered corners.