Steering gear limiting structure
By designing the adaptive clamping and ring structure between the limit ring and the steering housing in the limit structure of the steering wheel, the wear and shearing problems of existing limit structures are solved through only one stress-bearing surface, and the improvement of the The service life and comfort of the steering gear.
Patent Information
- Application Number
- CN202420992822.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-09
AI Technical Summary
When the existing steering gear limit structure is working to the limit position, the inner pull rod ball head squeezes the limit structure, resulting in abnormal wear and rubber shear between the limit structure and the steering housing, causing steering stagnation and feel. Issues such as deterioration.
Design a limit structure including a limiting ring, an inner pulling mechanism, a rack and a steering gear housing. The limiting ring is adapted and clamped with the steering gear housing, and the outer diameter is smaller than the inner diameter of the housing, and the inner pulling mechanism and limit The ring is abutted, and the limit ring is arranged in an annular structure, which contacts the steering gear housing only through one stress-receiving surface to avoid deformation and shearing.
It effectively avoids wear of the limit structure, reduces working noise, improves the steering comfort of the whole vehicle, and extends the service life of the steering gear.
Smart Images
Figure CN222272174U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automobile parts, in particular to a steering gear limiting structure. Background Art
[0002] The existing steering gear's limiting structure is assembled with the steering gear housing, and the steering gear's travel is controlled by limiting the limit position of the inner tie rod ball head base. However, due to the unreasonable mechanical structure and size design of the limiting structure in the existing technical solution, the inner tie rod ball head seat will squeeze the limiting structure when the steering gear works to the limit position, and two force-bearing surfaces will be generated between the limiting structure and the steering gear housing. After the limiting structure is deformed by force, abnormal wear and tear will easily occur between the limiting structure and the steering gear housing, and even the rubber part of the limiting structure will be sheared by the steering gear housing, resulting in a decrease in the performance of the limiting structure; and the worn and fallen rubber has the risk of falling into the position of the gear rack and the power-assisting mechanism, thereby causing problems such as steering stagnation and poor hand feel of the steering gear. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a steering gear limiting structure to solve the above-mentioned problem.
[0004] The utility model provides a technical solution to the above-mentioned technical problems as follows: a steering gear limiting structure, comprising: a limiting ring, an inner pulling mechanism, a rack and a steering gear housing; the limiting ring is adapted to be snap-fitted to the steering gear housing, the rack passes through the limiting ring and is connected to the inner pulling mechanism, the inner pulling mechanism abuts against the limiting ring, the limiting ring, the inner pulling mechanism and the rack are all arranged in the steering gear housing, and the outer diameter of the limiting ring is smaller than the inner diameter of the steering gear housing.
[0005] The beneficial effects of the utility model are as follows: by making the limit ring and the steering gear housing adaptable and snap-fitted, and setting the outer diameter of the limit ring to be smaller than the inner diameter of the steering gear housing, it is beneficial for the steering gear to work to the limit position and squeeze the limit ring through the inner pulling mechanism, the limit ring only contacts the steering gear housing through one force-bearing surface, thereby avoiding abnormal wear between the limit ring and the steering gear housing after deformation, and the problem of the rubber part of the limit ring being sheared by the steering gear housing, thereby buffering the impact of the inner pulling mechanism on the steering gear housing and the rack and gear shafts, reducing working noise, improving the steering comfort of the whole vehicle, and extending the service life of the steering gear.
[0006] On the basis of the above technical solution, the present invention can also be improved as follows.
[0007] Furthermore, the limiting ring includes a limiting ring abutment portion and a limiting ring extrusion portion, both of which are annular structures, the limiting ring abutment portion abuts against the inner pulling mechanism, and the limiting ring extrusion portion is adapted to be snap-fitted with the steering gear housing.
[0008] The beneficial effect of adopting the above-mentioned further scheme is that the abutment portion of the limit ring abuts against the inner pulling mechanism, which is conducive to transmitting the power of the rack transmission to the limit ring through the inner pulling mechanism, thereby causing an extrusion force between the extrusion portion of the limit ring and the steering gear housing, offsetting the thrust applied by the inner pulling mechanism, and avoiding damage to the internal parts of the steering gear when the steering gear works to the extreme position.
[0009] Furthermore, an upper convex position of the limiting ring extrusion part is arranged on the outer ring of the limiting ring extrusion part away from one end of the limiting ring abutting part, and the upper convex position of the limiting ring extrusion part is an annular convex block.
[0010] The beneficial effect of adopting the above further solution is that the upper convex position of the extrusion part of the limiting ring is engaged with the steering gear housing through the adapter, which is conducive to only receiving force through one force-bearing surface between the steering gear housing and the limiting ring when receiving the thrust of the inner pulling mechanism.
[0011] Further, the steering gear housing includes: a steering gear housing body, a lower protrusion of the steering gear housing and a steering gear housing abutment portion; the steering gear housing body is a tubular structure, the steering gear housing abutment portion is an annular structure arranged at the end of the steering gear housing body, the steering gear housing lower protrusion is an annular protrusion arranged on the inner diameter of the steering gear housing body, and the upper protrusion of the limiting ring extrusion portion is adapted to be arranged in an annular groove formed by the steering gear housing body, the steering gear housing lower protrusion and the steering gear housing abutment portion.
[0012] The beneficial effect of adopting the above-mentioned further scheme is that the upper convex position of the extrusion part of the limit ring is adapted to be arranged in the annular groove formed by the steering gear housing body, the lower convex portion of the steering gear housing, and the abutment part of the steering gear housing. On the one hand, it is beneficial to limit the limit ring, and on the other hand, when the limit ring is subjected to the thrust of the internal pulling mechanism, the force is only applied through the contact surface between the upper convex position of the extrusion part of the limit ring and the abutment part of the steering gear housing.
[0013] Furthermore, the outer diameter of the abutment portion of the limiting ring is smaller than the inner diameter of the lower protrusion of the steering gear housing.
[0014] The beneficial effect of adopting the above-mentioned further scheme is that when the limit ring is subjected to the thrust of the inner pulling mechanism, the abutment portion of the limit ring can smoothly pass through the lower protrusion of the steering gear housing, and no contact, extrusion and deformation occurs between the limit ring and the lower protrusion of the steering gear housing, thereby avoiding abnormal wear between the limit ring and the steering gear housing after deformation, and the problem of the rubber part of the limit ring being sheared by the steering gear housing.
[0015] Furthermore, the abutting portion of the limiting ring is made of metal, and the extruding portion of the limiting ring is made of rubber.
[0016] The beneficial effect of adopting the above further solution is that the rubber material of the limit ring extrusion part is conducive to avoiding hard contact between the limit ring extrusion part and the steering gear housing, thereby causing unnecessary wear on the components between the steering gear.
[0017] Furthermore, the inner pull mechanism includes: an inner pull rod ball head seat, an inner pull rod ball head and an inner pull rod; the inner pull rod ball head is adapted to be installed in the inner pull rod ball head seat, and one end away from the inner pull rod ball head seat is connected to the inner pull rod, and the inner pull rod ball head seat abuts against the limiting ring abutment.
[0018] The beneficial effect of adopting the above further scheme is that the steering movement of the steering gear drives the rack movement, which is beneficial to drive the movement of the inner pull mechanism, so that when the steering gear moves to the extreme position, the ball head seat of the inner pull rod abuts against the abutment part of the limit ring, applying thrust to the limit ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The overall structural diagram provided for the embodiment of the utility model;
[0020] Figure 2 for Figure 1 A magnified schematic diagram of the middle A area;
[0021] Figure 3 A schematic diagram of the limit ring structure provided in an embodiment of the utility model.
[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0023] 1. Limiting ring; 2. Inner pulling mechanism; 3. Rack; 4. Steering gear housing; 11. Limiting ring abutment portion; 12. Limiting ring extrusion portion; 21. Inner tie rod ball head seat; 22. Inner tie rod ball head; 23. Inner tie rod; 41. Steering gear housing body; 42. Lower convex portion of steering gear housing; 43. Steering gear housing abutment portion; 121. Upper convex portion of limiting ring extrusion portion. DETAILED DESCRIPTION
[0024] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0025] like Figures 1 to 3 As shown, a steering gear limiting structure includes: a limiting ring 1, an inner pulling mechanism 2, a rack 3 and a steering gear housing 4; the limiting ring 1 is adapted to be snap-fitted with the steering gear housing 4, the rack 3 passes through the limiting ring 1 and is connected with the inner pulling mechanism 2, the inner pulling mechanism 2 abuts against the limiting ring 1, the limiting ring 1, the inner pulling mechanism 2 and the rack 3 are all arranged in the steering gear housing 4, and the outer diameter of the limiting ring 1 is smaller than the inner diameter of the steering gear housing 4.
[0026] The beneficial effects of the utility model are as follows: by making the limit ring and the steering gear housing adaptable and snap-fitted, and setting the outer diameter of the limit ring to be smaller than the inner diameter of the steering gear housing, it is beneficial for the steering gear to work to the limit position and squeeze the limit ring through the inner pulling mechanism, the limit ring only contacts the steering gear housing through one force-bearing surface, thereby avoiding abnormal wear between the limit ring and the steering gear housing after deformation, and the problem of the rubber part of the limit ring being sheared by the steering gear housing, thereby buffering the impact of the inner pulling mechanism on the steering gear housing and the rack and gear shafts, reducing working noise, improving the steering comfort of the whole vehicle, and extending the service life of the steering gear.
[0027] Preferably, Figure 2 and Figure 3 As shown, the limit ring 1 includes a limit ring abutment portion 11 and a limit ring extrusion portion 12, both of which are annular structures. The limit ring abutment portion 11 abuts against the inner pulling mechanism 2, and the limit ring extrusion portion 12 is adapted to be snap-fitted with the steering gear housing 4.
[0028] The beneficial effect of adopting the above-mentioned preferred scheme is that the abutment portion of the limit ring abuts against the inner pulling mechanism, which is conducive to transmitting the power of the rack transmission to the limit ring through the inner pulling mechanism, thereby causing an extrusion force between the extrusion portion of the limit ring and the steering gear housing, offsetting the thrust applied by the inner pulling mechanism, and avoiding damage to the internal parts of the steering gear when the steering gear works to the extreme position.
[0029] Preferably, Figure 2 As shown, an upper convex position 121 of the limiting ring extrusion portion is provided on the outer ring of the limiting ring extrusion portion 12 away from one end of the limiting ring abutting portion 11, and the upper convex position 121 of the limiting ring extrusion portion is an annular convex block.
[0030] The beneficial effect of adopting the above preferred solution is that the upper convex position of the extrusion part of the limiting ring is engaged with the steering gear housing through the adapter, which is conducive to only receiving force through one force-bearing surface between the steering gear housing and the limiting ring when receiving the thrust of the inner pulling mechanism.
[0031] Preferably, Figure 2 As shown, the steering gear housing 4 includes: a steering gear housing body 41, a steering gear housing lower protrusion 42 and a steering gear housing abutment portion 43; the steering gear housing body 41 is a tubular structure, the steering gear housing abutment portion 43 is an annular structure arranged at the end of the steering gear housing body 41, the steering gear housing lower protrusion 42 is an annular protrusion arranged on the inner diameter of the steering gear housing body 41, and the upper protrusion 121 of the limiting ring extrusion portion is adapted to be arranged in an annular groove formed by the steering gear housing body 41 and the steering gear housing lower protrusion 42 and the steering gear housing abutment portion 43.
[0032] The beneficial effect of adopting the above-mentioned preferred scheme is that the upper convex position of the limit ring extrusion part is adapted to be arranged in the annular groove formed by the steering gear housing body, the lower convex portion of the steering gear housing, and the steering gear housing abutment part. On the one hand, it is beneficial to limit the limit ring, and on the other hand, when the limit ring is subjected to the thrust of the internal pulling mechanism, the force is only applied through the contact surface between the upper convex position of the limit ring extrusion part and the steering gear housing abutment part.
[0033] Preferably, Figure 2 As shown, the outer diameter of the stop ring abutment portion 11 is smaller than the inner diameter of the lower protrusion 42 of the steering gear housing.
[0034] The beneficial effect of adopting the above-mentioned preferred scheme is that when the limit ring is subjected to the thrust of the internal pulling mechanism, the abutment portion of the limit ring can smoothly pass through the lower protrusion of the steering gear housing, and no contact, extrusion and deformation occurs between the limit ring and the lower protrusion of the steering gear housing, thereby avoiding abnormal wear between the limit ring and the steering gear housing after deformation, and the problem of the rubber part of the limit ring being sheared by the steering gear housing.
[0035] Preferably, the limiting ring abutting portion 11 is made of metal, and the limiting ring extruding portion 12 is made of rubber.
[0036] The beneficial effect of adopting the above preferred solution is that the rubber material of the limit ring extrusion part is conducive to avoiding hard contact between the limit ring extrusion part and the steering gear housing, thereby causing unnecessary wear on the components between the steering gear.
[0037] Preferably, Figure 1 As shown, the inner pull mechanism 2 includes: an inner pull rod ball head seat 21, an inner pull rod ball head 22 and an inner pull rod 23; the inner pull rod ball head 22 is adapted to be installed in the inner pull rod ball head seat 21, and one end away from the inner pull rod ball head seat 21 is connected to the inner pull rod 23, and the inner pull rod ball head seat 21 abuts against the limit ring abutment portion 11.
[0038] The beneficial effect of adopting the above preferred scheme is that the steering movement of the steering gear drives the rack movement, which is beneficial to drive the inner pull mechanism to move, so that when the steering gear moves to the extreme position, the ball head seat of the inner pull rod abuts against the abutment part of the limit ring, applying thrust to the limit ring.
[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A steering gear limiting structure, characterized in that: include: A limiting ring (1), an inner pulling mechanism (2), a rack (3) and a steering gear housing (4); the limiting ring (1) is adapted to be snap-fitted with the steering gear housing (4); the rack (3) passes through the limiting ring (1) and is connected to the inner pulling mechanism (2); the inner pulling mechanism (2) abuts against the limiting ring (1); the limiting ring (1), the inner pulling mechanism (2) and the rack (3) are all arranged in the steering gear housing (4); and the outer diameter of the limiting ring (1) is smaller than the inner diameter of the steering gear housing (4).
2. A steering gear limiting structure according to claim 1, characterized in that: The limiting ring (1) comprises a limiting ring abutting portion (11) and a limiting ring extruding portion (12), both of which are annular structures, the limiting ring abutting portion (11) abuts against the inner pulling mechanism (2), and the limiting ring extruding portion (12) is adapted to be snap-fitted with the steering gear housing (4).
3. A steering gear limiting structure according to claim 2, characterized in that: An upper convex position (121) of the limiting ring extrusion portion is provided on the outer ring of one end of the limiting ring extrusion portion (12) away from the limiting ring abutment portion (11), and the upper convex position (121) of the limiting ring extrusion portion is an annular convex block.
4. A steering gear limiting structure according to claim 3, characterized in that: The steering gear housing (4) comprises: a steering gear housing body (41), a steering gear housing lower protrusion (42) and a steering gear housing abutment portion (43); the steering gear housing body (41) is a tubular structure, the steering gear housing abutment portion (43) is an annular structure arranged at the end of the steering gear housing body (41), the steering gear housing lower protrusion (42) is an annular protrusion arranged on the inner diameter of the steering gear housing body (41), and the upper protrusion (121) of the limiting ring extrusion portion is adapted to be arranged in an annular groove formed by the steering gear housing body (41), the steering gear housing lower protrusion (42) and the steering gear housing abutment portion (43).
5. A steering gear limiting structure according to claim 4, characterized in that: The outer diameter of the limiting ring abutment portion (11) is smaller than the inner diameter of the lower protrusion (42) of the steering gear housing.
6. A steering gear limiting structure according to claim 2, characterized in that: The limiting ring abutment portion (11) is made of metal, and the limiting ring extrusion portion (12) is made of rubber.
7. A steering gear limiting structure according to claim 2, characterized in that: The inner pull mechanism (2) comprises: an inner pull rod ball head seat (21), an inner pull rod ball head (22) and an inner pull rod (23); the inner pull rod ball head (22) is adapted to be installed in the inner pull rod ball head seat (21), and one end away from the inner pull rod ball head seat (21) is connected to the inner pull rod (23), and the inner pull rod ball head seat (21) abuts against the limit ring abutment portion (11).