Mistake-proof automobile steering shaft assembly

Abstract

The invention discloses a mistake-proof automobile steering shaft assembly which comprises a left steering shaft body, a first conical transition section, a first circular transition section, a second conical transition section, a second circular transition section, a reducing arc section, a left thirty-three gear, an inner eighteen tooth groove, a right steering shaft body, an outer eighteen gear, a limiting step ring, a reducing circular transition section, a right thirty-three gear and a limiting spline groove. The left thirty-three gear, the right thirty-three gear, the inner eighteen tooth groove and the outer eighteen gear which are optimally arranged can be matched to form a tooth missing and combining structure, it is guaranteed that the steering shaft is evenly stressed, tooth staggering damage to the steering shaft is effectively prevented, and the connection stability is good.

Description

Technical Field

[0001] The invention relates to the technical field of automobile steering shafts, in particular to the technical field of error-proof automobile steering shaft assemblies. Background Art

[0002] The function of the steering shaft is to transmit the steering torque applied by the driver to the steering wheel to the steering gear. Its upper part is fixedly connected to the steering wheel, and its lower part is connected to the steering gear. The steering shaft passes through the steering column tube and is supported on bearings and bushings in the column tube. Due to structural reasons, traditional steering shafts are prone to uneven force and damage to the teeth at the connection, which affects the stability of the connection. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose an anti-error automobile steering shaft assembly, which can form a missing tooth structure by optimizing the arrangement of the left thirty-three gears, the right thirty-three gears, the inner eighteen tooth grooves and the outer eighteen gears, thereby ensuring that the steering shaft is subjected to uniform force, effectively preventing damage to the steering shaft due to misaligned teeth, and having good connection stability.

[0004] To achieve the above-mentioned purpose, the present invention proposes an error-proof automobile steering shaft assembly, including a left steering shaft body, a first conical transition section, a first circular transition section, a second conical transition section, a second circular transition section, a reduced diameter arc section, a left thirty-three gear, an inner eighteen tooth groove, a right steering shaft body, an outer eighteen gears, a limiting step ring, a reduced diameter circular transition section, a right thirty-three gear and a limiting spline groove, wherein a plurality of limiting ring grooves are arranged on the left side of the left steering shaft body, a first conical transition section is arranged on the left side of the limiting ring groove, a first circular transition section is arranged on the left end of the first conical transition section, a second conical transition section is arranged on the left end of the first circular transition section, and a second conical transition section is arranged on the left end of the second conical transition section. Circular transition section, a reduced diameter arc section is provided at the left end of the second circular transition section, a left thirty-three gear is provided on the left side of the reduced diameter arc section, an inner eighteen-tooth groove with an opening at the right end is provided at the right end of the left steering shaft body along the axial centerline, a right steering shaft body is inserted in the inner eighteen-tooth groove, an outer eighteen-gear is provided at the left end of the right steering shaft body corresponding to the inner eighteen-tooth groove, a limiting step ring is provided on the right side of the right steering shaft body, a plurality of limiting ring grooves are provided on the right side of the limiting step ring, a reduced diameter circular transition section is provided at the right end of the right steering shaft body, a right thirty-three gear is provided at the right end of the reduced diameter circular transition section, and a limited position spline groove is provided on the circumferential surface of the right thirty-three gear.

[0005] Preferably, a shaped cylindrical section is extended from the left end of the left thirty-three gears, the diameter of the shaped cylindrical section is smaller than the outer diameter of the left thirty-three gears, and a reduced diameter guide section is extended from the left end of the outer eighteen gears.

[0006] Preferably, the outer diameter of the inner eighteen-tooth groove is smaller than the diameter of the left side portion of the left steering shaft body, and the diameter of the limiting step ring is larger than the opening diameter of the inner eighteen-tooth groove.

[0007] Preferably, the tooth angle positions of the left thirty-three gears and the right thirty-three gears are consistent.

[0008] Preferably, the limiting spline groove is located in the middle of the circumferential surface of the right thirty-three gear, and the arc degree of the limiting spline groove is 50 degrees.

[0009] Preferably, the axis lines of the left thirty-three gears, the inner eighteen tooth grooves, the outer eighteen gears and the right thirty-three gears are located on the same straight line.

[0010] Beneficial effects of the present invention: The present invention combines the left steering shaft body, the first conical transition section, the first circular transition section, the second conical transition section, the second circular transition section, the reduced diameter arc section, the left thirty-three gears, the inner eighteen tooth grooves, the right steering shaft body, the outer eighteen gears, the limiting step ring, the reduced diameter circular transition section, the right thirty-three gears and the limiting spline grooves together, and after experimental optimization, can form a missing tooth structure through the optimized arrangement of the left thirty-three gears, the right thirty-three gears, the inner eighteen tooth grooves and the outer eighteen gears, thereby ensuring that the steering shaft is subjected to uniform force, effectively preventing damage to the steering shaft by misaligned teeth, and having good connection stability.

[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the main structure of the error-proof automobile steering shaft assembly of the present invention; Figure 2 It is a schematic diagram of the FF cross-sectional structure of the error-proof automobile steering shaft assembly of the present invention.

[0013] In the figure: 1-left steering shaft, 2-first conical transition section, 3-first circular transition section, 4-second conical transition section, 5-second circular transition section, 6-reduced diameter arc section, 7-left thirty-three gears, 8-inner eighteen tooth grooves, 9-right steering shaft, 10-outer eighteen gears, 11-limiting step ring, 12-reduced diameter circular transition section, 13-right thirty-three gears, 14-limiting spline groove. DETAILED DESCRIPTION

[0014] See also Figure 1 and Figure 2The error-proof automobile steering shaft assembly of the present invention comprises a left steering shaft body 1, a first conical transition section 2, a first circular transition section 3, a second conical transition section 4, a second circular transition section 5, a reduced diameter arc section 6, a left thirty-three gear 7, an inner eighteen-tooth groove 8, a right steering shaft body 9, an outer eighteen-tooth gear 10, a limiting step ring 11, a reduced diameter circular transition section 12, a right thirty-three gear 13 and a limiting spline groove 14. The left side of the left steering shaft body 1 is provided with a plurality of limiting ring grooves, the left side of the limiting ring groove is provided with a first conical transition section 2, and the first conical transition section 2 is provided with a plurality of limiting ring grooves. A first circular transition section 3 is provided at the left end, a second conical transition section 4 is provided at the left end of the first circular transition section 3, a second circular transition section 5 is provided at the left end of the second conical transition section 4, a reduced diameter arc section 6 is provided at the left end of the reduced diameter arc section 6, a left thirty-three gear 7 is provided on the left side of the reduced diameter arc section 6, an inner eighteen-tooth groove 8 with an opening at the right end is provided at the right end of the left steering shaft body 1 along the axis centerline, a right steering shaft body 9 is inserted in the inner eighteen-tooth groove 8, and an outer ten-tooth groove 8 is provided at the left end of the right steering shaft body 9 corresponding to the inner eighteen-tooth groove 8 Eighth gear 10, a limited step ring 11 is provided on the right side of the right steering shaft body 9, and a plurality of limited ring grooves are provided on the right side of the limited step ring 11, and a right end of the right steering shaft body 9 is provided with a reduced diameter circular transition section 12, and a right thirty-three gear 13 is provided on the right end of the reduced diameter circular transition section 12, and a limited position spline groove 14 is provided on the circumferential surface of the right thirty-three gear 13, and a fixed cylindrical section is extended to the left end of the left thirty-three gear 7, and the diameter of the fixed cylindrical section is smaller than the outer diameter of the left thirty-three gear 7, and the left end of the outer eighteen gear 10 A reducing guide section is extended at the end, the outer diameter of the inner eighteen-tooth groove 8 is smaller than the diameter of the left side part of the left steering shaft body 1, the diameter of the limiting step ring 11 is larger than the opening diameter of the inner eighteen-tooth groove 8, the tooth angle position of the left thirty-three gears 7 and the right thirty-three gears 13 is consistent, the limiting spline groove 14 is located in the middle of the circumferential surface of the right thirty-three gears 13, the arc degree of the limiting spline groove 14 is 50 degrees, and the axial center lines of the left thirty-three gears 7, the inner eighteen-tooth groove 8, the outer eighteen gears 10 and the right thirty-three gears 13 are located on the same straight line.

[0015] The present invention combines a left steering shaft body 1, a first conical transition section 2, a first circular transition section 3, a second conical transition section 4, a second circular transition section 5, a reduced diameter arc section 6, a left thirty-three gear 7, an inner eighteen tooth groove 8, a right steering shaft body 9, an outer eighteen gear 10, a limiting step ring 11, a reduced diameter circular transition section 12, a right thirty-three gear 13 and a limiting spline groove 14 together. After experimental optimization, the left thirty-three gear 7, the right thirty-three gear 13, the inner eighteen tooth groove 8 and the outer eighteen gear 10 can be optimized to form a missing tooth structure, thereby ensuring that the steering shaft is evenly stressed, effectively preventing the steering shaft from being damaged by misaligned teeth, and having good connection stability.

[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 belongs to the protection scope of the present invention.

Claims

1. Error-proof automobile steering shaft assembly, characterized by: The invention comprises a left steering shaft body (1), a first conical transition section (2), a first circular transition section (3), a second conical transition section (4), a second circular transition section (5), a reduced diameter arc section (6), a left thirty-three gear (7), an inner eighteen-tooth groove (8), a right steering shaft body (9), an outer eighteen-tooth groove (10), a limiting step ring (11), a reduced diameter circular transition section (12), a right thirty-three gear (13) and a limiting spline groove (14), wherein a plurality of limiting ring grooves are arranged on the left side of the left steering shaft body (1), a first conical transition section (2) is arranged on the left side of the limiting ring groove, a first circular transition section (3) is arranged on the left end of the first conical transition section (2), a second conical transition section (4) is arranged on the left end of the first circular transition section (3), a second conical transition section (5) is arranged on the left end of the second conical transition section (4), and a second circular transition section (5) is arranged on the left end of the second conical transition section (4). A reduced diameter arc section (6) is provided at the left end of the circular transition section (5), a left thirty-three gear (7) is provided on the left side of the reduced diameter arc section (6), an inner eighteen-tooth groove (8) with a right end opening is provided at the right end of the left steering shaft body (1) along the axis centerline, a right steering shaft body (9) is inserted in the inner eighteen-tooth groove (8), an outer eighteen-tooth groove (10) is provided at the left end of the right steering shaft body (9) corresponding to the inner eighteen-tooth groove (8), a limited position step ring (11) is provided on the right side of the right steering shaft body (9), a plurality of limited position ring grooves are provided on the right side of the limited position step ring (11), a reduced diameter circular transition section (12) is provided at the right end of the reduced diameter circular transition section (12), a right thirty-three gear (13) is provided at the right end of the reduced diameter circular transition section (12), and a limited position spline groove (14) is provided on the circumferential surface of the right thirty-three gear (13).

2. The error-proof automobile steering shaft assembly according to claim 1, characterized in that: A shaped cylindrical section is provided extending from the left end of the left thirty-three gear (7), the diameter of the shaped cylindrical section being smaller than the outer diameter of the left thirty-three gear (7), and a reduced diameter guide section is provided extending from the left end of the outer eighteen gears (10).

3. The error-proof automobile steering shaft assembly according to claim 1, characterized in that: The outer diameter of the inner eighteen tooth grooves (8) is smaller than the diameter of the left side portion of the left steering shaft body (1), and the diameter of the limiting step ring (11) is larger than the opening diameter of the inner eighteen tooth grooves (8).

4. The error-proof automobile steering shaft assembly according to claim 1, characterized in that: The tooth angle positions of the left thirty-three gears (7) and the right thirty-three gears (13) are consistent.

5. The error-proof automobile steering shaft assembly according to claim 1, characterized in that: The limiting spline groove (14) is located in the middle of the circumferential surface of the right thirty-three gear (13), and the arc degree of the limiting spline groove (14) is 50 degrees.

6. The error-proof automobile steering shaft assembly according to claim 1, characterized in that: The axis lines of the left thirty-three gears (7), the inner eighteen tooth grooves (8), the outer eighteen gears (10) and the right thirty-three gears (13) are located on the same straight line.

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