Upper tubular column for vehicle steering system
By using the cooperation between elastic limiting parts and pins in the upper pipe string of the vehicle steering system, the problem of lack of damping feeling during axial adjustment of the upper pipe string is solved, and fast and accurate adjustment is achieved, making operation more convenient.
Patent Information
- Application Number
- CN202421629051.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The upper column of existing vehicle steering systems lacks a damping feeling when adjusted axially, resulting in excessive adjustment and difficulty in quickly adjusting to the appropriate position.
A upper pipe string for a vehicle steering system is designed, and an elastic limit member is used to cooperate with the pin shaft. The elastic limit of the pin shaft is achieved through the structure of the guide groove and the clamp, providing a damping feeling during axial adjustment.
Through the fit of the elastic limiting parts, the damping feeling when the upper tube column moves axially, avoiding the problem of excessive adjustment, and being able to quickly adjust to the appropriate position, making the operation faster.
Smart Images
Figure CN222905641U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of vehicle steering systems, and particularly to an upper steering column for a vehicle steering system. Background Art
[0002] The upper steering column is one of the core components in the vehicle steering system. The upper end of the lower column tube of the steering system is sleeved inside the lower end of the upper column tube, and the upper steering shaft of the steering system is arranged inside the upper column tube, and the lower steering shaft is arranged inside the lower column tube. The upper steering shaft and the lower steering shaft are connected by splines for steering transmission.
[0003] In order to facilitate the telescopic adjustment of the steering system, it is necessary to clamp, lock and release the upper end of the lower column tube by the upper column tube. The invention patent with the application number 2022108715685 discloses a manual four-way adjustable steering column structure, which clamps and releases the upper end of the lower column tube by passing a pin through the axial adjustment groove of the upper column tube. However, the pin has no limit in the axial adjustment groove, resulting in no damping feeling when the upper column tube is axially adjusted relative to the lower column tube, being easy to over-adjust, and difficult to quickly adjust to a suitable position, so improvement is needed. Summary of the Utility Model
[0004] The main technical problem to be solved by the utility model is to provide an upper steering column for a vehicle steering system, which can elastically limit the pin and improve the convenience of axial adjustment.
[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide an upper steering column for a vehicle steering system, including: an elastic limiting member and an upper steering column base body. The upper steering column base body includes a guiding tube, a connecting tube and a clamping tube. The connecting tube is concentrically arranged between the guiding tube and the clamping tube. An expansion joint is axially arranged on the clamping tube. Clamping plates are symmetrically arranged on both sides of the expansion joint. A guiding groove is arranged in the clamping plate. The elastic limiting member is spacedly arranged in the guiding groove of the clamping plate on one side or both sides of the expansion joint.
[0006] In a preferred embodiment of the utility model, the guiding groove is of a rectangular structure and extends along the axial direction of the clamping tube.
[0007] In a preferred embodiment of the utility model, the guiding tube, the connecting tube and the clamping tube adopt an integrated structure.
[0008] In a preferred embodiment of the utility model, ear seats are arranged on both sides of the connecting tube, and mounting holes are arranged on the ear seats.
[0009] In a preferred embodiment of the present utility model, the elastic limiting member includes a guiding block, a spring, and a plug. The bottom surface of the clamping plate is provided with stepped holes extending into the guiding groove at intervals. The guiding block is arranged in the stepped holes. The guiding block is provided with a limiting post extending into the guiding groove. The spring is arranged at the bottom of the guiding block. The plug is arranged in the stepped holes and is located at the bottom of the spring.
[0010] In a preferred embodiment of the present utility model, a hemispherical body or a ball protruding from the bottom surface of the guiding groove is arranged at the end of the limiting post.
[0011] In a preferred embodiment of the present utility model, internal threads corresponding to the plug are arranged in the stepped holes.
[0012] In a preferred embodiment of the present utility model, first reinforcing ribs extending axially are arranged at intervals on the outer wall of the clamping tube.
[0013] In a preferred embodiment of the present utility model, second reinforcing ribs connected to the clamping tube are arranged at intervals on the clamping plate.
[0014] The beneficial effects of the present utility model are as follows: A upper steering column for a vehicle steering system pointed out by the present utility model. The pin shaft can penetrate the guiding groove to lock or release the two clamping plates, and the elastic limiting member is used for elastic limiting of the pin shaft. When the upper steering column moves axially, a certain damping feeling is provided through the cooperation of the elastic limiting member and the pin shaft, avoiding the problem of excessive adjustment, and the upper steering column can be quickly adjusted to a suitable position, and the operation is more rapid. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts, where:
[0016] Figure 1 is a schematic structural diagram of a preferred embodiment of an upper steering column for a vehicle steering system of the present utility model;
[0017] Figure 2 is Figure 1 a three-dimensional view of DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0019] Please refer to Figures 1 - 2 , the embodiments of the present utility model include:
[0020] As Figure 1 and Figure 2 shown in the upper column for a vehicle steering system, it includes an elastic limiting member 4 and an upper column base body. The upper column base body includes a guiding tube 1, a connecting tube 2, and a clamping tube 3. The connecting tube 2 is concentrically arranged between the guiding tube 1 and the clamping tube 3. In this embodiment, the guiding tube 1, the connecting tube 2, and the clamping tube 3 adopt an integrated structure and can be produced by die casting, with a firm structure.
[0021] Lugs 21 are arranged on both sides of the connecting tube 2, and mounting holes 22 are arranged on the lugs 21, which is convenient for fixing the upper mounting bracket of the vehicle steering system by screws, with a stable structure, no need for welding, and convenient disassembly and assembly. First reinforcing ribs 32 extending axially are arranged at intervals on the outer wall of the clamping tube 3 to enhance the axial structural strength of the clamping tube 3 and have good axial bending resistance.
[0022] An expansion joint 31 is arranged axially on the clamping tube 3. Clamping plates 33 are symmetrically arranged on both sides of the expansion joint 31, and a guiding groove 35 is arranged in the clamping plates 33. A pin can penetrate through the guiding groove 35, and with the cooperation of a wrench, the two clamping plates 33 can compress the expansion joint 31 to realize the clamping and locking of the upper end of the lower column tube. After unlocking, the expansion joint 31 naturally expands and resets, which is beneficial to the axial adjustment of the upper column relative to the lower column. In this embodiment, second reinforcing ribs 34 connected to the clamping tube 3 are arranged at intervals on the clamping plates 33 to enhance the connection strength between the clamping plates 33 and the clamping tube 3 and avoid cracking problems.
[0023] As Figure 2 shown, the guiding groove 4 has a rectangular structure and extends along the axial direction of the clamping tube 3. The elastic limiting member 4 is arranged at intervals in the guiding groove 35 of one side of the expansion joint 31 or both clamping plates. The elastic limiting member 4 is used for elastic limiting of the pin. The width of the guiding groove 4 corresponds to the diameter of the pin, and the axial movement of the clamping tube 3 is guided by the pin. When the upper column moves axially, a certain damping feeling is provided through the cooperation of the elastic limiting member 4 and the pin for step - by - step adjustment, avoiding the problem of excessive adjustment, and the upper column can be quickly adjusted to a suitable position.
[0024] As Figure 1As shown, the elastic limiting member 4 includes a guiding block 43, a spring 41 and a plug 44. The bottom surface of the clamping plate 33 is provided with stepped holes 36 at intervals, which extend into the guiding groove 35. The guiding block 43 is arranged in the stepped holes 36. A limiting post 42 extending into the guiding groove 35 is arranged on the guiding block 43. In this embodiment, a hemisphere or a ball protruding from the bottom surface of the guiding groove is arranged at the end of the limiting post 42. The elastic limit during adjustment is achieved by the cooperation of the hemisphere or the ball with the pin inserted into the guiding groove 35.
[0025] The spring 41 is arranged at the bottom of the guiding block 43, and the plug 44 is arranged in the stepped hole 36 and located at the bottom of the spring 41. In this embodiment, an internal thread 37 corresponding to the plug 44 is arranged in the stepped hole 36. The spring 41 is compressed by rotating the plug 44, the elastic force applied to the bottom of the guiding block 43 is adjusted, and the elastic force is transmitted to the pin in contact with the end of the limiting post 42 to provide damping when the clamping tube 3 moves relative to the pin.
[0026] In summary, an upper column tube for a vehicle steering system pointed out by the present utility model has a stable structure, is convenient to close the expansion joint through a pin and a wrench, realizes the clamping and locking of the upper end of the lower column tube, and improves the quickness of the axial adjustment of the upper column tube and the lower column tube after unlocking.
[0027] The above are only embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.
Claims
1. An upper column for a vehicle steering system, characterized in that: include: An elastic limiter and an upper pipe column base, the upper pipe column base includes a guide tube, a connecting tube and a clamping tube, the connecting tube is concentrically arranged between the guide tube and the clamping tube, an expansion joint is axially arranged on the clamping tube, clamping plates are symmetrically arranged on both sides of the expansion joint, guide grooves are arranged in the clamping plates, and the elastic limiter is arranged at intervals in the guide grooves of the clamping plates on one side or both sides of the expansion joint.
2. The upper column for a vehicle steering system according to claim 1, characterized in that: The guide groove is in a rectangular structure and extends along the axial direction of the clamping tube.
3. The upper column for a vehicle steering system according to claim 1, characterized in that: The guide tube, the connecting tube and the clamping tube adopt an integrated structure.
4. The upper column for a vehicle steering system according to claim 1, characterized in that: Ear seats are arranged on both sides of the connecting pipe, and mounting holes are arranged on the ear seats.
5. The upper column for a vehicle steering system according to claim 1, characterized in that: The elastic limiter includes a guide block, a spring and a screw plug. The bottom surface of the splint is provided with stepped holes extending into the guide groove at intervals. The guide block is arranged in the stepped holes. The guide block is provided with a limit column extending into the guide groove. The spring is arranged at the bottom of the guide block. The screw plug is arranged in the stepped hole and is located at the bottom of the spring.
6. The upper column for a vehicle steering system according to claim 5, characterized in that: The end of the limiting column is provided with a hemispherical body or a ball protruding from the bottom surface of the guide groove.
7. The upper column for a vehicle steering system according to claim 5, characterized in that: The stepped hole is provided with an internal thread corresponding to the screw plug.
8. The upper column for a vehicle steering system according to claim 1, characterized in that: First reinforcing ribs extending in the axial direction are arranged at intervals on the outer wall of the clamping tube.
9. The upper column for a vehicle steering system according to claim 1, characterized in that: Second reinforcing ribs connected to the clamping tube are arranged at intervals on the clamping plate.