Length-adjustable steering gear input shaft structure
By designing an adjustable steering wheel input shaft structure, using extended rods to threaded connections and lock nuts, the problem of inconsistent input shaft lengths of different models is solved, cost reduction and resource optimization are achieved, suitable for multiple models, and production is avoided waste of resources.
Patent Information
- Application Number
- CN202420986628.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-05-09
AI Technical Summary
Inconsistent lengths of existing steering gear input shafts lead to high costs in parts development and production management, and the process of finding the right length consumes a lot of manpower and material resources and wastes resources.
A steering wheel input shaft structure with adjustable length is designed, and the input shaft body is threaded through the extension rod and tightened by locking nuts to achieve axial length adjustment, which is suitable for different models.
It reduces the cost of parts development, realizes the generalization of input shafts, reduces the production and manufacturing costs, and simplifies the length adjustment process, avoiding loose or rotation of input shafts.
Smart Images
Figure CN222136840U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a steering gear structure, in particular to a steering gear input shaft structure with adjustable length. Background Art
[0002] When the car is driving, the steering wheel is turned to drive the steering column to rotate. The steering column is connected to the input shaft on the steering gear body through a spline structure, so that the rotational force on the steering wheel is transmitted to the steering gear body through the steering gear input shaft to realize the steering of the car.
[0003] The input shaft of the steering gear is usually a straight long rod. The layout of the steering gear of different models is different, and the length of the steering gear input shaft is also different. When developing parts, it is necessary to develop steering gears with different input shaft lengths, which increases the cost of parts development, testing costs and production management costs. At the same time, in the process of finding a steering gear, the OEM will also increase a lot of manpower and material investment in order to find a steering gear input shaft of the appropriate length, resulting in a waste of resources. Therefore, a new steering gear input shaft is proposed. On the basis of reducing the production and manufacturing cost, the input shaft length can be adjusted according to actual needs, which is suitable for different models.
[0004] Patent CN212890567U discloses a steering gear input shaft, wherein an extension rod is connected to the input shaft body, and the extension rod is spline-connected to the input shaft body, and a circumferential fixing structure is provided on the extension rod. Although the structure can realize length adjustment, the overall structure is complex due to the internal spline and the circumferential fixing structure, and is not easy to process and manufacture. Summary of the invention
[0005] This length-adjustable steering gear input shaft structure is characterized in that it includes, in sequence: an input shaft body 2, a locking nut 1 3, a locking nut 2 4, and an extension rod 5; the input shaft body 2 is provided with an input shaft body external thread 7, and the input shaft body 2 is connected to the steering gear body 1 through a worm gear structure; the extension rod 5 is provided with an extension rod internal thread 8 at one end close to the steering gear, and an extension rod spline 10 at the end away from the steering gear, and an extension rod hexagonal surface structure 9 is provided in the middle of the outer surface of the extension rod 5; the extension rod 5 is matched with the input shaft body external thread 7 on the input shaft body 2 through the extension rod internal thread 8 and the locking nut 1 3 and the locking nut 2 4, and is tightened at the same time.
[0006] As a preferred option: there is no need to remove the steering gear, and the extension rod and the locking nut can be adjusted as needed to adjust the steering gear input shaft.
[0007] As a preference: Since one end of the extension rod is fastened with two locking nuts, loosening or even rotation of the steering gear input shaft during movement can be avoided.
[0008] Preferably, a hexagonal surface structure is provided in the middle of the extension rod to facilitate manual operation and adjust the length of the extension rod.
[0009] The advantages of the utility model are as follows: the length-adjustable steering gear input shaft structure can adjust the length of the input shaft assembly along the axial direction through the threaded connection structure between the extension rod and the steering gear input shaft, is suitable for different vehicle models, reduces the development of parts and components, realizes the universalization of the input shaft, and reduces the development and manufacturing costs of parts and components. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the solution of the utility model, the present invention will be described in detail below with reference to the accompanying drawings and implementation modes.
[0011] Figure 1 It is a schematic diagram of the use state of the utility model.
[0012] Figure 2 Schematic diagram of the structural details of the connection part.
[0013] Figure 3 This is a schematic diagram of the extension rod.
[0014] Figure 4 This is a schematic diagram of the input shaft body.
[0015] Explanation of the accompanying drawings: steering gear body 1, input shaft body 2, locking nut one 3, locking nut two 4, extension rod 5, steering column 6, input shaft body external thread 7, extension rod internal thread 8, extension rod hexagonal surface structure 9, extension rod spline 10, extension rod groove 11. DETAILED DESCRIPTION
[0016] The utility model is further described below in conjunction with the accompanying drawings and examples. However, it should be noted that the embodiments described below are only some embodiments of the utility model, not all embodiments, and ordinary technicians in this field who only replace, improve or modify the present invention without making innovative efforts, without departing from the essence of the present invention, should be included in the scope of the claims of the present invention.
[0017] As the instruction manual Figures 1 to 4 As shown, the length-adjustable steering gear input shaft structure of this embodiment comprises, in sequence: a steering gear body 1, an input shaft body 2, a locking nut 1 3, a locking nut 2 4, an extension rod 5, and a steering column 6; the input shaft body 2 is provided with an input shaft body external thread 7; one end of the extension rod 5 is provided with an extension rod internal thread 8, an extension rod hexagonal surface structure 9 is provided in the middle, and the other end is provided with an extension rod spline 10 and an extension rod groove 11; the extension rod 5 cooperates with the input shaft body external thread 7 on the input shaft body 2 through the extension rod internal thread 8, and is tightened by the locking nut 1 3 and the locking nut 2 4 at the same time; the extension rod 5 cooperates with the steering column 6 through the extension rod spline 10 and the extension rod groove 11.
[0018] The steering gear body can adjust the input shaft length by replacing the extension rod. Loosen the locking nut 1 3 and the locking nut 2 4, rotate the extension rod 5, disconnect the extension rod 5 from the input shaft body 2; axially move the extension rod 5 to disconnect the extension rod spline 10 from the steering column 6. Replace the extension rod 5 of different lengths, rotate the extension rod 5, and connect it to the steering gear body 1; tighten the locking nut 1 3 and the locking nut 2 4; connect the extension rod spline 10 on the extension rod 5 to the steering column 6, and then tighten the threads.
[0019] The steering gear body can adjust the axial length by adjusting the extension rod and the locking nut. Loosen the locking nut 1 3 and the locking nut 2 4, rotate the extension rod 5, adjust to the appropriate position, and then tighten the locking nut 1 3 and the locking nut 2 4 to adjust the length of the input shaft body 2 and the extension rod 5.
[0020] One end of the extension rod 5 is fastened by a locking nut 1 3 and a locking nut 2 4, and the other end is fastened by an extension rod spline 10 and an extension rod groove 11 to prevent loosening or even rotation.
[0021] The extension rod 5 is integrally formed, and in the actual production process, the diameter of the portion where the extension rod internal thread 8 and the extension rod spline 10 are located can be determined according to the diameter of the steering gear input shaft body 2 and the steering column spline portion.
Claims
1. A length-adjustable steering input shaft structure, characterized in that: Including in order: An input shaft body (2), a locking nut 1 (3), a locking nut 2 (4), and an extension rod (5); the input shaft body (2) is provided with an input shaft body external thread (7), and the input shaft body (2) and the steering gear body (1) are connected together through a worm gear structure; the extension rod (5) is provided with an extension rod internal thread (8) at one end close to the steering gear, and an extension rod spline (10) at one end away from the steering gear, and an extension rod hexagonal surface structure (9) is provided in the middle of the outer surface of the extension rod (5); the extension rod (5) is matched with the input shaft body external thread (7) on the input shaft body (2) through the extension rod internal thread (8) and the locking nut 1 (3) and the locking nut 2 (4), and is tightened at the same time.
2. The length-adjustable steering input shaft structure according to claim 1, characterized in that: There is no need to remove the steering gear. The extension rod and locking nut can be adjusted as needed to adjust the steering gear input shaft.
3. The length-adjustable steering input shaft structure according to claim 1, characterized in that: One end of the extension rod is fastened by two locking nuts to prevent the steering gear input shaft from loosening or even rotating during movement.
4. The length-adjustable steering input shaft structure according to claim 1, characterized in that: A hexagonal surface structure is provided in the middle of the extension rod, which is convenient for manual operation to adjust the length of the extension rod.