Steering gear adjusting assembly and vehicle

Abstract

The utility model discloses a steering gear adjusting assembly and a vehicle. The steering gear adjusting assembly comprises a steering gear shell; the adjusting nut is arranged at a port of the steering gear shell; the pressing block is arranged in the steering gear shell, and one side of the pressing block abuts against a rack; the elastic piece is connected between the adjusting nut and the other side of the pressing block in an abutting mode. And the first rubber part is arranged around the peripheral side of the elastic part, one side of the first rubber part abuts against the adjusting nut, and the other side of the first rubber part is matched with the steering gear shell in a limiting mode and selectively abuts against the pressing block. When the shimmy displacement of the pressing block is too large due to the shimmy of the rack, the pressing block can bear the resultant force of the elastic piece and the first rubber piece, so that the rack and the gear are tightly meshed. Before the steering gear is offline, the gap between the pressing block and the rack does not need to be adjusted to be too small, and the problem that a user feels heavy when operating the steering wheel is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is involved in a kind of steering gear adjusting assembly and vehicle. BACKGROUND

[0002] With the development of automobile market, people's comfort requirement for passenger car is also higher and higher, and the abnormal sound generated when the vehicle changes direction or passes through bumpy road is also more and more sensitive. The gear shaft rack type steering gear with cross tie rod assembly is an important component of automobile. With the long-term driving of automobile, the relative movement between each part of steering gear will cause wear phenomenon, and the gap between parts will also increase, thus it is easy to produce abnormal sound, and even reduce the performance of steering system, affect the performance of whole vehicle and also affect the driving comfort of driver.

[0003] In the related art, the steering machine controls the torque of the adjusting nut to make the gap between the full-range pressing block and the rack within 0.08 mm, which is beneficial to the effective engagement of the gear rack. Since the gap of the pressing block will increase with the increase of mileage, the gear rack cannot be well constrained, which causes various abnormal sounds such as gear rack impact. Reducing the gap of the pressing block before the steering machine is offline can solve such noise problem, but the too small gap of the pressing block makes the pre-tightening force of the pressing block too large, which will cause the heavy feeling of the steering. SUMMARY

[0004] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a steering gear adjusting assembly. When the pressing block is subjected to excessive swing displacement of the rack, the pressing block can be subjected to the resultant force of the elastic member and the first rubber member, so that the rack and the gear are tightly engaged. Before the steering gear is offline, the gap between the pressing block and the rack does not need to be adjusted too small, which avoids the heavy feeling of the steering wheel when the user operates the steering wheel.

[0005] According to the steering gear adjusting assembly of the first aspect of the utility model, the steering gear adjusting assembly comprises a steering gear housing, an adjusting nut arranged at the port of the steering gear housing, a pressing block arranged in the steering gear housing and abutting against one side of the rack, an elastic member abutting between the adjusting nut and the other side of the pressing block, and a first rubber member arranged around the side of the elastic member, one side of the first rubber member abutting against the adjusting nut, and the other side of the first rubber member being limited by the steering gear housing and selectively abutting against the pressing block.

[0006] According to the steering gear adjusting assembly of the utility model, when the pressing block is subjected to excessive swing displacement of the rack, the pressing block can be subjected to the resultant force of the elastic member and the first rubber member, so that the rack and the gear are tightly engaged. Before the steering gear is offline, the gap between the pressing block and the rack does not need to be adjusted too small, which avoids the heavy feeling of the steering wheel when the user operates the steering wheel.

[0007] According to some embodiments of the present invention, a first annular groove is formed on one side of the pressure block facing the adjusting nut, and the other side of the elastic member is fitted in the first annular groove and abuts against the bottom wall of the first annular groove.

[0008] According to some embodiments of the present invention, the steering gear adjustment assembly further includes: a second rubber member; a boss is provided at the center of the pressure block, the boss protrudes toward the adjustment nut, the second rubber member is provided on the boss, and the second rubber member selectively abuts against the adjustment nut.

[0009] According to some embodiments of the present invention, a mounting groove with an opening facing the adjusting nut is formed on the boss, and the second rubber member is disposed in the mounting groove.

[0010] According to some embodiments of the present invention, a convex ring is provided on the outer periphery of the pressure block, the first annular groove is formed between the convex ring and the convex column, and the other side of the first rubber member selectively abuts against the convex ring.

[0011] According to some embodiments of the present invention, an end surface of the second rubber component facing the adjusting nut protrudes from an end surface of the convex ring.

[0012] According to some embodiments of the present invention, when the pressure block is in a natural state, the distance between the convex ring and the first rubber member is A, and the distance between the second rubber member and the adjusting nut is B, and A and B satisfy the relationship: A<B.

[0013] According to some embodiments of the present invention, the steering gear adjustment assembly further includes: a third rubber member, a second annular groove is formed on the outer periphery of the pressure block, and the third rubber member is disposed in the second annular groove and abuts against the steering gear housing.

[0014] According to some embodiments of the present invention, a limiting step is provided on the steering gear housing, and the first rubber member is in limiting cooperation with the limiting step.

[0015] According to an embodiment of the second aspect of the present invention, a vehicle comprises a steering gear including a gear; a rack meshing with the gear; and a steering gear adjustment assembly. When a pressure block is subjected to excessive oscillation displacement from the rack, the preload force of the pressure block is adjusted by a first rubber member and an elastic member, thereby constraining the meshing of the rack and gear without adjusting an adjustment nut. Prior to the steering gear being disassembled, the clearance between the pressure block and the rack does not need to be adjusted excessively, thereby preventing a heavy feel when the user operates the steering wheel.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a cross-sectional view of the steering gear adjustment assembly and the rack according to an embodiment of the present invention. Figure 1 :

[0019] Figure 2 This is a cross-sectional view of the steering gear adjustment assembly and the rack according to an embodiment of the present invention. Figure 2 :

[0020] Figure 3 This is a cross-sectional view of the steering gear adjustment assembly and the rack according to an embodiment of the present invention. Figure 3 .

[0021] Reference numerals:

[0022] 10. Steering gear adjustment assembly; 11. Steering gear housing; 111. Position limiting step; 12. Adjusting nut; 13. Pressing block; 131. First annular groove; 132. Boss; 133. Boss ring; 134. Second annular groove; 135. Mounting groove; 14. Elastic member; 15. First rubber member; 16. Second rubber member; 17. Third rubber member;

[0023] 20. Rack. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0025] Reference below Figures 1-3 A steering gear adjustment assembly 10 according to an embodiment of the present invention is described, and a vehicle is also proposed.

[0026] like Figure 1 As shown, the steering gear adjustment assembly 10 includes: a steering gear housing 11, an adjusting nut 12, a pressure block 13 and an elastic member 14. The adjusting nut 12 is arranged at a port of the steering gear housing 11. The adjusting nut 12 is connected to the housing and encapsulates the pressure block 13 in the steering gear housing 11.

[0027] In addition, the pressure block 13 is arranged in the steering gear housing 11, one side of the pressure block 13 abuts against the rack 20, and the side of the pressure block 13 facing the rack 20 abuts against the rack 20, and the rack 20 and the gear are engaged with each other. During the rotation of the gear, the pressure block 13 ensures that the rack 20 and the gear can fit tightly.

[0028] Generally speaking, the gap between the pressure block 13 and the rack 20 should be neither too large nor too small. If the gap between the pressure block 13 and the rack 20 is too large, the pressure block 13 cannot properly restrain the meshing of the rack 20 and the gear, causing various abnormal noises such as the rack 20 hitting the gear. If the gap between the pressure block 13 and the rack 20 is too small, the preload force of the pressure block 13 will be too large, causing the user to feel a heavy hand when steering.

[0029] according to Figure 1 As shown, the elastic member 14 abuts between the adjusting nut 12 and the other side of the pressure block 13. One side of the elastic member 14 abuts against the adjusting nut 12, and the other side of the elastic member 14 abuts against the other side of the pressure block 13. The elastic member 14 is arranged between the adjusting nut 12 and the pressure block 13. The elastic member 14 applies a force to the pressure block 13, which can provide support for the pressure block 13 and ensure that the gear and rack 20 are tightly engaged. When the rack 20 oscillates, the pressure block 13 is displaced, and the elastic member 14 provides elastic force to the pressure block 13, pushing the pressure block 13 to abut against the rack 20, ensuring that the gear and rack 20 are tightly engaged. The elastic member 14 can be a spring, for example, a wire spring or a rubber spring.

[0030] like Figure 1 and Figure 2 As shown, the steering gear adjustment assembly 10 may include: a first rubber member 15, which is disposed around the circumference of the elastic member 14. One side of the first rubber member 15 abuts the adjustment nut 12, and the other side of the first rubber member 15 is positionally engaged with the steering gear housing 11 and selectively abuts the pressure block 13. Specifically, the first rubber member 15 is disposed on the outer circumference of the elastic member 14 and spaced apart from the elastic member 14. The side of the first rubber member 15 facing the adjustment nut 12 abuts the adjustment nut 12, and the side of the first rubber member 15 facing away from the adjustment nut 12 is positionally engaged with the steering gear housing 11.

[0031] During assembly, the first rubber member 15 is installed on the steering gear housing 11. The first rubber member 15 and the steering gear housing 11 are limited and matched. Then the adjusting nut 12 is installed. The adjusting nut 12 abuts against the first rubber member 15. Thus, the adjusting nut 12 and the steering gear housing 11 limit the first rubber member 15 on both sides of the axial direction and the circumferential direction, completing the installation of the first rubber member 15.

[0032] When the rack 20 is not in the swing state, the first rubber piece 15 is not in abutment with the pressing block 13.

[0033] When the rack 20 is in the swing state, the pressing block 13 is displaced within a certain range under the swing of the rack 20. If the swing amplitude of the rack 20 is small, the displacement of the pressing block 13 is small, and the displacement of the pressing block 13 is smaller than the gap between the pressing block 13 and the first rubber piece 15, so the first rubber piece 15 is not in abutment with the pressing block 13.

[0034] If the swing amplitude of the rack 20 is large, the displacement of the pressing block 13 is larger than the gap between the pressing block 13 and the first rubber piece 15, and the pressing block 13 is in abutment with the first rubber piece 15. At this time, the force acting on the pressing block 13 is equal to the resultant force of the elastic piece 14 and the first rubber piece 15, and the force acting on the rack 20 is larger, which can better constrain the engagement of the rack 20 and the gear.

[0035] Therefore, when the swing amplitude of the rack 20 is large, the displacement of the pressing block 13 is large, and the gap between the pressing block 13 and the rack 20 is increased. If only the elastic force of the elastic piece 14 is used, the engagement of the rack 20 and the gear cannot be well constrained, which may cause various abnormal noises such as impact between the gear and the rack 20. By arranging the first rubber piece 15, when the displacement of the pressing block 13 is large due to the large swing amplitude of the rack 20, the force acting on the pressing block 13 is increased, and the engagement of the rack 20 and the gear is better constrained, thereby avoiding various abnormal noises.

[0036] Therefore, when the displacement of the pressing block 13 is too large due to the swing of the rack 20, the pressing block 13 can be subjected to the adjusting force of both the elastic piece 14 and the first rubber piece 15, and the force acting on the pressing block 13 is increased. Therefore, the engagement of the rack 20 and the gear can be constrained without adjusting the adjusting nut 12, and the gap between the pressing block 13 and the rack 20 does not need to be adjusted too small before the steering gear is removed, thereby avoiding the problem of heavy feeling when the user operates the steering wheel.

[0037] As shown in Figure 2 and Figure 3 , the pressing block 13 is provided with a first annular groove 131 on the side facing the adjusting nut 12, and the other side of the elastic piece 14 is fitted in the first annular groove 131 and abuts against the bottom wall of the first annular groove 131. Specifically, the side of the pressing block 13 facing the adjusting nut 12 is recessed inward to form the first annular groove 131, and the elastic piece 14 is fitted in the first annular groove 131, and the end of the elastic piece 14 abuts against the bottom wall of the first annular groove 131. The first annular groove 131 limits the displacement of the elastic piece 14, avoids the displacement of the elastic piece 14, and ensures the cooperation between the elastic piece 14 and the pressing block 13.

[0038] Referring to Figures 1-3As shown, the steering gear adjustment assembly 10 further includes a second rubber member 16; a boss 132 is provided at the center of the pressure block 13, the boss 132 protruding toward the adjustment nut 12, and the second rubber member 16 is provided on the boss 132, selectively abutting the adjustment nut 12. Specifically, the boss 132 is provided on the side of the pressure block 13 facing away from the rack 20, is located at the center of the pressure block 13, and protrudes toward the adjustment nut 12.

[0039] When the second rubber member 16 is installed on the boss 132, the end surface of the second rubber member 16 facing the adjusting nut 12 protrudes from the end surface of the boss 132. If the rack 20 has a large swing amplitude, causing the pressure block 13 to move to abut against the adjusting nut 12, the second rubber member 16 contacts the adjusting nut 12, preventing the pressure block 13 from hard contact with the adjusting nut 12 and preventing the pressure block 13 and the adjusting nut 12 from colliding and causing abnormal noise.

[0040] like Figure 3 As shown, the boss 132 is provided with a mounting groove 135, the opening of which faces the adjusting nut 12, and the second rubber member 16 is disposed within the mounting groove 135. Specifically, the mounting groove 135 is located on the side of the boss 132 facing the adjusting nut 12, and the mounting groove 135 is disposed opposite the adjusting nut 12. The mounting groove 135 defines a receiving space within which the second rubber member 16 can be disposed, thereby enabling installation of the second rubber member 16.

[0041] The second rubber member 16 may abut against the inner wall of the installation groove 135 , or the second rubber member 16 may have an interference fit with the inner wall of the installation groove 135 , thereby ensuring the reliability of the assembly of the second rubber member 16 .

[0042] like Figure 3 As shown, a protruding ring 133 is provided on the outer circumference of the pressure block 13. A first annular groove 131 is formed between the protruding ring 133 and the protruding column 132. The other side of the first rubber member 15 selectively abuts the protruding ring 133. Specifically, the protruding ring 133 is provided around the outer circumference of the elastic member 14. The inner circumferential wall of the protruding ring 133 constitutes the outer sidewall of the first annular groove 131, and the outer circumferential wall of the protruding column 132 constitutes the inner sidewall of the first annular groove 131. The protruding ring 133 and the protruding column 132 form the first annular groove 131. The side of the first rubber member 15 facing away from the adjusting nut 12 selectively abuts the protruding ring 133.

[0043] like Figure 1 and Figure 2As shown, the end surface of the second rubber member 16 facing the adjustment nut 12 protrudes beyond the end surface of the raised ring 133. Specifically, the raised ring 133 selectively abuts the first rubber member 15, and the second rubber member 16 selectively abuts the adjustment nut 12. The height difference between the end surface of the raised ring 133 and the end surface of the second rubber member 16 is greater than the thickness of the first rubber member 15. This ensures that when the pressure block 13 is displaced and abuts the first rubber member 15, the second rubber member 16 does not abut the adjustment nut 12, allowing the first rubber member 15 to adjust the preload force of the pressure block 13.

[0044] Combine Figure 2 The pressure block 13 is shown in its natural state. The distance between the protruding ring 133 and the first rubber member 15 is A, and the distance between the second rubber member 16 and the adjusting nut 12 is B. A and B satisfy the relationship: A < B. Specifically, when the rack 20 oscillates, it pushes the pressure block 13 to move.

[0045] If the displacement of the pressing block 13 is less than A, only the elastic force of the elastic member 14 can constrain the rack 20 to mesh with the gear, thereby ensuring a tight fit between the rack 20 and the gear.

[0046] If A is less than the displacement of pressure block 13 and less than B, the end face of pressure block 13 facing the adjustment nut 12, that is, the end face of protruding ring 133, contacts first rubber member 15. Pressure block 13 is then acted upon by the combined force of elastic member 14 and first rubber member 15, constraining the meshing of rack 20 with the gear. The combined force of first rubber member 15 and elastic member 14 prevents abnormal noise caused by excessive clearance between pressure block 13 and rack 20. Before the steering gear is off the assembly line, there's no need to overly narrow the clearance between pressure block 13 and rack 20, which could cause a heavy feel when the user operates the steering wheel.

[0047] If the displacement of the pressing block 13 is less than B, the second rubber member 16 contacts the adjusting nut 12 to prevent the pressing block 13 from hard contacting the adjusting nut 12 and causing abnormal noise due to the impact.

[0048] like Figure 1 and Figure 2 As shown, the steering gear adjustment assembly 10 further includes a third rubber member 17. A second annular groove 134 is defined on the outer periphery of the pressure block 13. The third rubber member 17 is disposed within the second annular groove 134 and abuts the steering gear housing 11. Specifically, in its natural state, the outer diameter of the third rubber member 17 is larger than the inner diameter of the steering gear housing 11. Therefore, when installed within the second annular groove 134, the third rubber member 17 forms an interference fit with the steering gear housing 11. The provision of the third rubber member 17 effectively mitigates the impact of the pressure block 13 on the steering gear housing 11, effectively alleviating abnormal noise.

[0049] The third rubber member 17 may be an O-shaped rubber ring.

[0050] according to Figure 3As shown, the steering gear housing 11 is provided with a limiting step 111, and the first rubber member 15 is limitedly engaged with the limiting step 111. In other words, the limiting step 111 is formed on the inner wall of the steering gear housing 11, and the first rubber member 15 is limitedly engaged with the limiting step 111. The steering gear housing 11 axially limits the side where the first rubber member 15 mates with the pressure block 13, and the steering gear housing 11 also limits the circumferential position of the first rubber member 15, ensuring the installation reliability of the first rubber member 15.

[0051] According to a second embodiment of the present invention, a vehicle includes a steering gear, the steering gear including a gear; a rack 20 meshing with the gear; and a steering gear adjustment assembly 10. The steering gear assembly steps are as follows: pre-assemble the third rubber member 17 within the second annular groove 134, and assemble the second rubber member 16 within the mounting groove 135 in the center of the pressure block 13; then mesh the rack 20 and the gear within the steering gear housing 11; then, sequentially install the pressure block 13, the elastic member 14, and the first rubber member 15; screw in the adjustment nut 12 to adjust the clearance of the pressure block 13; the adjustment nut 12 compresses the elastic member 14 to generate a preload force on the pressure block 13; because the first rubber member 15 can work with the elastic member 14 when the clearance between the pressure block 13 and the rack 20 is large, the initial clearance of the pressure block 13 does not need to be too small. Before the steering gear is off the assembly line, the clearance between the pressure block 13 and the rack 20 does not need to be adjusted too small, thereby avoiding the problem of a heavy feel when the user operates the steering wheel.

[0052] 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 to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0053] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A steering gear adjustment assembly, characterized in that: include: Steering gear housing (11); an adjusting nut (12), the adjusting nut (12) being arranged at a port of the steering gear housing (11); A pressure block (13), the pressure block (13) being arranged in the steering gear housing (11), and one side of the pressure block (13) being in contact with the rack (20); an elastic member (14), the elastic member (14) being in contact between the adjusting nut (12) and the other side of the pressing block (13); A first rubber member (15) is provided around the circumference of the elastic member (14), one side of the first rubber member (15) abuts against the adjusting nut (12), and the other side of the first rubber member (15) is limitedly engaged with the steering gear housing (11) and selectively abuts against the pressure block (13).

2. The steering gear adjustment assembly according to claim 1, characterized in that: A first annular groove (131) is formed on one side of the pressure block (13) facing the adjusting nut (12), and the other side of the elastic member (14) fits in the first annular groove (131) and abuts against the bottom wall of the first annular groove (131).

3. The steering gear adjustment assembly according to claim 2, characterized in that: Also includes: A second rubber member (16), a boss (132) is provided at the center of the pressure block (13), the boss (132) protrudes toward the adjustment nut (12), the second rubber member (16) is provided on the boss (132), and the second rubber member (16) selectively abuts against the adjustment nut (12).

4. The steering gear adjustment assembly according to claim 3, characterized in that: The boss (132) is provided with a mounting groove (135) with an opening facing the adjusting nut (12), and the second rubber member (16) is disposed in the mounting groove (135).

5. The steering gear adjustment assembly according to claim 3, characterized in that: A convex ring (133) is provided on the outer periphery of the pressure block (13), a first annular groove (131) is formed between the convex ring (133) and the convex column (132), and the other side of the first rubber member (15) selectively abuts against the convex ring (133).

6. The steering gear adjustment assembly according to claim 5, characterized in that: The end surface of the second rubber member (16) facing the adjusting nut (12) protrudes from the end surface of the protruding ring (133).

7. The steering gear adjustment assembly according to claim 5, characterized in that: When the pressing block (13) is in a natural state, the distance between the convex ring (133) and the first rubber member (15) is A, and the distance between the second rubber member (16) and the adjusting nut (12) is B, and A and B satisfy the relationship: A<B.

8. The steering gear adjustment assembly according to claim 1, characterized in that: Also includes: A third rubber member (17), a second annular groove (134) is formed on the outer periphery of the pressure block (13), and the third rubber member (17) is disposed in the second annular groove (134) and abuts against the steering gear housing (11).

9. The steering gear adjustment assembly according to claim 1, characterized in that: A limiting step (111) is provided on the steering gear housing (11), and the first rubber part (15) is in limiting cooperation with the limiting step (111).

10. A vehicle, characterized in that: include: A steering gear, comprising: a gear; a rack (20), the rack (20) being engaged with the gear; and a steering gear adjustment assembly (10) according to any one of claims 1 to 9.

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