Three-section type steering column intermediate shaft
By designing a three-stage steering pipe string intermediate shaft, using the welding and gear shaft segment structure of independent sliding pairs and fork components, the problem of the intermediate shaft needing a whole reopening in the existing technology is solved, and the flexible combination of models is achieved. The effect of cost reduction.
Patent Information
- Application Number
- CN202420892556.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-27
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-27
AI Technical Summary
The sliding pair of the existing steering gear intermediate shaft assembly is integrated with the upper and lower forks, resulting in the need to reopen the mold as a whole when facing different models, reducing production efficiency and increasing costs.
A three-stage steering column intermediate shaft is designed, with the sliding pair being an independent part, which is connected to the upper and lower fork components respectively, and can be flexibly combined through welding and tooth shaft sections to reduce the mold opening and control phase angle.
It realizes a flexible combination of intermediate shafts of different models, reduces production costs and mold opening design requirements, and improves production efficiency.
Smart Images
Figure CN222247354U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile accessories, in particular to a three-section steering column intermediate shaft. Background Art
[0002] The function of the steering gear is to appropriately transform the steering torque and steering angle from the steering wheel (mainly to reduce speed and increase torque), and then output it to the steering rod mechanism to make the car turn, so the steering gear is essentially a reduction transmission device. The intermediate shaft is one of the main components in the automobile steering system, mechanically connecting the steering column and the steering gear to transmit steering torque. In the existing intermediate shaft assembly, the sliding pair and the upper and lower yokes are mostly integrally formed, but the upper and lower yokes of the intermediate shaft of the current steering transmission system are of various forms, and the axial and radial dimensions are also different. As a result, when manufacturers deal with different vehicle layouts and meet performance requirements, they can only adopt the overall re-molding method for design and production. Re-molding not only reduces production efficiency, but also increases production costs. Therefore, it is necessary to invent a new three-section steering column intermediate shaft. Utility Model Content
[0003] The utility model aims to provide a three-section steering column intermediate shaft, which solves the problem that the production efficiency is reduced and the production cost is high when manufacturing the existing intermediate shaft assembly with an integrated structure.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] A three-section steering column intermediate shaft comprises a sliding pair, wherein the two ends of the sliding pair are respectively connected with an upper yoke assembly and a lower yoke assembly, wherein the upper yoke assembly comprises an upper yoke of the sliding pair, an upper cross shaft and an upper yoke of a steering gear, and the lower yoke assembly comprises a lower yoke of the sliding pair, a lower cross shaft and a lower yoke of the steering gear, wherein the upper yoke of the sliding pair and the lower yoke of the sliding pair are both separate parts and are respectively connected with a female shaft section and a male shaft section of the sliding pair.
[0006] Furthermore, an upper mounting hole with a stepped surface is provided on a side of the upper yoke of the sliding pair facing the female shaft section, and the upper end of the female shaft section is inserted into the upper mounting hole.
[0007] Furthermore, after the female shaft segment is inserted into the upper yoke of the sliding pair, the female shaft segment and the upper yoke of the sliding pair are fixedly connected by welding.
[0008] Furthermore, a connecting shaft is arranged at one end of the lower yoke of the sliding pair facing the male shaft section, a lower mounting hole is arranged at one end of the lower yoke of the sliding pair facing the connecting shaft, and the lower end of the male shaft section is inserted into the lower mounting hole.
[0009] Furthermore, a gear shaft section is arranged at one end of the male shaft section facing the lower yoke of the sliding pair, a plurality of fixed teeth are evenly arranged on the circumference of the gear shaft section, and the gear shaft section is inserted into the lower mounting hole.
[0010] Furthermore, after the male shaft section is inserted into the lower yoke of the sliding pair, the male shaft section and the lower yoke of the sliding pair are fixedly connected by welding.
[0011] Furthermore, the heads of the upper yoke of the sliding pair and the upper yoke of the steering gear are both U-shaped structures, both sides of the upper yoke of the sliding pair are rotationally connected to the upper cross shaft, and both sides of the upper yoke of the steering gear are rotationally connected to the upper cross shaft.
[0012] Furthermore, the heads of the sliding pair lower yoke and the steering gear lower yoke are both U-shaped structures, both sides of the sliding pair lower yoke are rotationally connected to the lower cross shaft, and both sides of the steering gear lower yoke are rotationally connected to the lower cross shaft.
[0013] Beneficial effects of the utility model: The utility model solves the problem that the intermediate shaft of different models needs to be re-molded as a whole, so as to reduce the mold parts and reduce the manufacturing cost. A set of sliding pairs can be freely matched with upper and lower yokes of different sizes and different phase angles to flexibly meet the requirements of various models.
[0014] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a structural diagram of a three-section steering column intermediate shaft.
[0016] Figure 2 The utility model is an exploded view of a three-section steering column intermediate shaft.
[0017] Figure 3 This is an exploded view of an intermediate shaft of a three-section steering column according to the utility model in another direction.
[0018] Figure 4 It is an exploded view of the upper yoke assembly in the utility model.
[0019] Figure 5 It is an exploded view of the lower yoke assembly in the utility model. DETAILED DESCRIPTION
[0020] like Figures 1 to 5A three-section steering column intermediate shaft shown includes a sliding pair 2, and the two ends of the sliding pair 2 are respectively connected to an upper yoke assembly 1 and a lower yoke assembly 3. The upper yoke assembly 1 includes a sliding pair upper yoke 11, an upper cross shaft 12 and a steering gear upper yoke 13, and the lower yoke assembly 3 includes a sliding pair lower yoke 31, a lower cross shaft 32 and a steering gear lower yoke 33. The sliding pair upper yoke 11 and the sliding pair lower yoke 31 are both separate parts and are respectively connected to the female shaft section 21 and the male shaft section 22 of the sliding pair 2. The sliding pair 2 of the intermediate shaft assembly of the utility model is retained and used, and only the gear shaft section 221 is slightly processed and modified. The upper yoke assembly 1 and the lower yoke assembly 3 are newly molded. The length of the entire intermediate shaft is controlled by the length of the sliding pair lower yoke 31. The overall design is flexible and the combination is diverse. At the same time, the phase angle can also be effectively controlled by a welding fixture, and the development part is reduced, which reduces the cost.
[0021] Preferably, in combination with the above scheme, in order to facilitate welding after the upper yoke 11 of the sliding pair and the mother shaft section 21 are firmly assembled, an upper mounting hole 111 with a stepped surface is provided on the side of the upper yoke 11 of the sliding pair facing the mother shaft section 21, and the upper end of the mother shaft section 21 is inserted into the upper mounting hole 111 by interference fit.
[0022] Preferably, in combination with the above solution, in order to make the connection more secure, the female shaft segment 21 is inserted into the upper yoke 11 of the sliding pair and fixedly connected to the upper yoke 11 of the sliding pair by carbon dioxide shielded welding.
[0023] Preferably, in combination with the above scheme, a connecting shaft 311 is provided at one end of the sliding pair lower yoke 31 facing the male shaft section 22, and the length of the intermediate shaft assembly can be controlled by designing the length of the connecting shaft 311. A lower mounting hole 312 is provided at one end of the sliding pair lower yoke 31 facing the connecting shaft 311, and the lower end of the male shaft section 22 is inserted into the lower mounting hole 312.
[0024] Preferably, in combination with the above solution, in order to facilitate welding after firmly assembling the sliding pair lower yoke 31 and the male shaft section 22, the male shaft section 22 is provided with a gear shaft section 221 at one end facing the sliding pair lower yoke 31, and a plurality of fixed teeth are evenly provided on the circumference of the gear shaft section 221, and the gear shaft section 221 is inserted into the lower mounting hole 312 by interference fit. The gear shaft section 221 structure can prevent displacement during welding and has the effect of increasing the connection strength.
[0025] Preferably, in combination with the above solution, in order to make the connection more secure, the male shaft section 22 is inserted into the lower yoke 31 of the sliding pair and then fixedly connected to the male shaft section 22 and the lower yoke 31 of the sliding pair by carbon dioxide shielded welding.
[0026] Preferably, in combination with the above scheme, in order to facilitate assembly, the heads of the sliding pair upper yoke 11 and the steering gear upper yoke 13 are both U-shaped structures, and the two sides of the sliding pair upper yoke 11 are rotatably connected to the upper cross shaft 12, and the two sides of the steering gear upper yoke 13 are rotatably connected to the upper cross shaft 12.
[0027] Preferably, in combination with the above scheme, in order to facilitate assembly, the heads of the sliding pair lower yoke 31 and the steering gear lower yoke 33 are both U-shaped structures, and the two sides of the sliding pair lower yoke 31 are rotatably connected to the lower cross shaft 32, and the two sides of the steering gear lower yoke 33 are rotatably connected to the lower cross shaft 32.
[0028] It should be noted that all directional indications in the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0029] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or they are directly applied to other occasions without improvement, they all fall within the protection scope of the utility model.
Claims
1. A three-section steering column intermediate shaft, comprising a sliding pair (2), characterized in that: The two ends of the sliding pair (2) are respectively connected to an upper yoke assembly (1) and a lower yoke assembly (3); the upper yoke assembly (1) comprises an upper yoke (11) of the sliding pair, an upper cross shaft (12) and an upper yoke (13) of the steering gear; the lower yoke assembly (3) comprises a lower yoke (31) of the sliding pair, a lower cross shaft (32) and a lower yoke (33) of the steering gear; the upper yoke (11) of the sliding pair and the lower yoke (31) of the sliding pair are both separate parts and are respectively connected to the female shaft section (21) and the male shaft section (22) of the sliding pair (2).
2. The three-section steering column intermediate shaft according to claim 1 is characterized in that: An upper mounting hole (111) with a stepped surface is provided on one side of the upper yoke (11) of the sliding pair facing the mother shaft section (21), and the upper end of the mother shaft section (21) is inserted into the upper mounting hole (111).
3. The three-section steering column intermediate shaft according to claim 2 is characterized in that: After the female shaft section (21) is inserted into the upper yoke (11) of the sliding pair, the female shaft section (21) and the upper yoke (11) of the sliding pair are fixedly connected by welding.
4. The three-section steering column intermediate shaft according to claim 1 is characterized in that: A connecting shaft (311) is provided at one end of the lower yoke (31) of the sliding pair facing the male shaft section (22), and a lower mounting hole (312) is provided at one end of the lower yoke (31) of the sliding pair facing the connecting shaft (311), and the lower end of the male shaft section (22) is inserted into the lower mounting hole (312).
5. The three-section steering column intermediate shaft according to claim 4 is characterized in that: A gear shaft section (221) is arranged at one end of the male shaft section (22) facing the lower yoke (31) of the sliding pair, and a plurality of fixed teeth are evenly arranged on the circumference of the gear shaft section (221). The gear shaft section (221) is inserted into the lower mounting hole (312).
6. The three-section steering column intermediate shaft according to claim 5, characterized in that: After the male shaft section (22) is inserted into the lower yoke (31) of the sliding pair, the male shaft section (22) and the lower yoke (31) of the sliding pair are fixedly connected by welding.
7. The three-section steering column intermediate shaft according to claim 1, characterized in that: The heads of the sliding pair upper yoke (11) and the steering gear upper yoke (13) are both U-shaped structures, the two sides of the sliding pair upper yoke (11) are rotatably connected to the upper cross shaft (12), and the two sides of the steering gear upper yoke (13) are rotatably connected to the upper cross shaft (12).
8. The three-section steering column intermediate shaft according to claim 1, characterized in that: The heads of the sliding pair lower yoke (31) and the steering gear lower yoke (33) are both U-shaped structures, the two sides of the sliding pair lower yoke (31) are rotationally connected to the lower cross shaft (32), and the two sides of the steering gear lower yoke (33) are rotationally connected to the lower cross shaft (32).