Steering gear input shaft spline fixing tool

Abstract

The utility model belongs to the technical field of automobile steering equipment, and particularly relates to a steering gear input shaft spline fixing tool. Comprising a tool round seat and a spline housing, the tool round seat is connected with a threaded cover of the steering gear, a mounting groove is formed in the tool round seat, and the spline housing is arranged in the mounting groove and connected with a spline at the input end of the steering gear. The input spline of the steering gear is connected with the threaded cover of the steering gear through the spline housing and the tool round seat, the input end of the steering gear can be fixed, the input end of the steering gear is prevented from deviating from the middle marking position when the steering gear is loaded, and therefore the situation that the number of turns on the two sides of a steering wheel is inconsistent after the steering gear deviates from the middle position is avoided; the influence on the vehicle driving feeling caused by large left-right fluctuation of the rotating torque is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile steering equipment, and particularly relates to a spline fixing tool for a steering gear input shaft. Background Art

[0002] The steering system of a car consists of three parts: a steering mechanism, a steering gear and a steering transmission mechanism. The steering mechanism generally consists of a steering wheel, a steering column, a steering shaft and a steering knuckle. The steering transmission mechanism generally includes a steering vertical arm, a steering straight tie rod, a steering knuckle arm, left and right trapezoidal arms and a steering tie rod. When the steering gear is installed on the vehicle, one end of the straight tie rod is connected to the ball pin hinge of the steering vertical arm with a ball pin seat, and the other end is connected to the ball pin seat hole of the steering knuckle arm with a ball pin. The steering gear is a device that appropriately transforms the steering torque and steering angle from the steering wheel and transmits them to the wheels with the help of the steering tie rod mechanism to make the vehicle turn.

[0003] However, the compression spring in the vehicle's straight tie rod has a certain degree of elasticity. When loading, the length of the straight tie rod will be stretched or compressed to ensure the connection between the straight tie rod and the steering drop arm and the steering knuckle arm. Therefore, it is easy to cause the steering drop arm to deviate from the middle line position of the steering gear, and after reverse drive, the input end of the steering gear will also deviate from the middle line position. After the steering gear is loaded on the vehicle deviating from the middle position, it is easy to cause the number of turns on both sides of the steering wheel to be inconsistent, and the torque fluctuations on the left and right will affect the driving experience of the vehicle. Therefore, it is necessary to design a steering gear input shaft spline fixing tool to solve the above problems. Summary of the invention

[0004] In view of the above problems, the utility model provides a steering gear input shaft spline fixing tool to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steering gear input shaft spline fixing tool, comprising a tooling round seat and a spline sleeve, the tooling round seat is connected to the threaded cover of the steering gear, a mounting groove is opened in the tooling round seat, the spline sleeve is arranged in the mounting groove, and the spline sleeve is connected to the spline of the steering gear input end.

[0006] Furthermore, the steering gear input shaft spline fixing tool also includes a locating pin, which passes through the tooling round seat and is connected to the threaded cover. There are multiple locating pins, and the multiple locating pins are evenly distributed around the tooling round seat.

[0007] Furthermore, the steering gear input shaft spline fixing tool also includes an elastic retaining ring for a hole, an axial positioning groove is also opened inside the tooling round seat, a step is arranged inside the tooling round seat, the axial positioning groove is connected to the mounting groove, the elastic retaining ring for the hole is arranged in the axial positioning groove, one end of the spline sleeve is used to abut against the side of the step, and the other end abuts against the elastic retaining ring for the hole.

[0008] Furthermore, the steering gear input shaft spline fixing tool also includes a slotted cone-end locking screw, the side wall of the tooling round seat is provided with a connecting hole, the outer side wall of the spline sleeve is provided with a connecting groove, and the end of the slotted cone-end locking screw passes through the connecting hole and is inserted into the connecting groove.

[0009] Furthermore, the steering gear input shaft spline fixing tool also includes a spring, one end of the spring abuts against the step, the other end of the spring abuts against the spline sleeve, and the axial direction of the spring is parallel to the axial direction of the spline sleeve.

[0010] Furthermore, a plurality of sliding blocks are arranged on the elastic retaining ring for the hole, and a sliding groove is opened on the inner side wall of the tooling round seat relative to the sliding block, the axial direction of the sliding groove is parallel to the axial direction of the axial positioning groove, and the sliding groove is connected to the axial positioning groove.

[0011] Technical effects and advantages of the utility model:

[0012] Connecting the input spline of the steering gear with the threaded cover of the steering gear through the spline sleeve and the tooling round seat can fix the input end of the steering gear to prevent the input end of the steering gear from deviating from the middle marked position when the steering gear is installed on the vehicle, thereby preventing the steering gear from being installed on the vehicle at a deviation from the middle position, resulting in inconsistent numbers of turns on both sides of the steering wheel, and preventing large fluctuations in the torque from left to right that affect the driving experience of the vehicle.

[0013] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1A diagram showing the use state of the steering gear input shaft spline fixing tooling of the embodiment of the utility model;

[0016] Figure 2 It shows a schematic structural diagram of a spline fixing tool for a steering gear input shaft according to an embodiment of the utility model;

[0017] Figure 3 It shows a schematic structural diagram of a steering gear input shaft spline fixing tooling according to another embodiment of the utility model;

[0018] Figure 4 The figure shows a structural schematic diagram of a tooling round seat according to another embodiment of the utility model.

[0019] Figure numerals: 1. tooling round seat; 11. mounting groove; 12. axial positioning groove; 13. step; 14. connecting hole; 15. slide groove; 2. spline sleeve; 3. threaded cover; 4. positioning pin; 5. elastic retaining ring for hole; 51. slider; 6. slotted cone end set screw; 7. spring; 8. spline. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 4 As shown, a steering gear input shaft spline fixing tool of an embodiment of the utility model includes a tool round seat 1 and a spline sleeve 2. The tool round seat 1 is connected to the threaded cover 3 of the steering gear. A mounting groove 11 is opened in the tool round seat 1. The spline sleeve 2 is arranged in the mounting groove 11. The spline sleeve 2 is connected to the spline 8 at the input end of the steering gear.

[0022] Specifically, the spline sleeve 2 is configured as a cylindrical structure, the spline sleeve 2 and the mounting groove 11 are coaxially distributed, and the outer wall of the spline sleeve 2 and the inner wall of the mounting groove 11 are interference fit.

[0023] In this embodiment, by opening a mounting groove 11 in the tooling round seat 1, the spline sleeve 2 can be set in the mounting groove 11 in the tooling round seat 1, so that a fixed connection relationship can be established between the spline sleeve 2 and the tooling round seat 1. By connecting the tooling round seat 1 with the threaded cover 3 of the steering gear, a fixed connection relationship can be established between the spline sleeve 2 and the threaded cover 3 of the steering gear. Therefore, by connecting the spline sleeve 2 with the spline 8 at the input end of the steering gear, the input spline 8 of the steering gear can be connected with the threaded cover 3 of the steering gear through the spline sleeve 2 and the tooling round seat 1, so that the input end of the steering gear can be fixed, avoiding the input end of the steering gear from deviating from the middle line position when the steering gear is installed, thereby avoiding the steering gear from deviating from the middle position after the steering gear is installed, resulting in inconsistent number of circles on both sides of the steering wheel, and preventing the torque from fluctuating greatly from left to right to affect the driving experience of the vehicle.

[0024] Alternatively, if Figures 1 to 3 As shown, the steering gear input shaft spline fixing tool further includes a locating pin 4, which passes through the tool round seat 1 and is connected to the threaded cover 3. A plurality of locating pins 4 are provided, and the plurality of locating pins 4 are evenly distributed around the tool round seat 1.

[0025] In this embodiment, by setting a positioning pin 4 on the tooling round seat 1, the positioning pin 4 can be used to pass through the tooling round seat 1 and the threaded cover 3 in sequence to connect the tooling round seat 1 with the threaded cover 3, ensuring that when the input spline 8 of the steering gear is connected to the threaded cover 3 through the spline sleeve 2 and the tooling round seat 1, the connection between the tooling round seat 1 and the threaded cover 3 is stable, thereby improving the stability of the connection between the spline 8 and the threaded cover 3, so that the input end of the steering gear remains fixed.

[0026] Secondly, multiple positioning pins 4 are set and evenly distributed around the tooling round seat 1. Then, the multiple positioning pins 4 can connect each area of ​​the tooling round seat 1 with the threaded cover 3, thereby improving the connection strength between the tooling round seat 1 and the threaded cover 3, so that the input end of the steering gear remains fixed.

[0027] Alternatively, if Figures 1 to 3 As shown, the steering gear input shaft spline fixing tool also includes a hole elastic retaining ring 5, an axial positioning groove 12 is also opened inside the tooling round seat 1, a step 13 is arranged inside the tooling round seat 1, the axial positioning groove 12 is connected with the mounting groove 11, the hole elastic retaining ring 5 is arranged in the axial positioning groove 12, one end of the spline sleeve 2 is used to abut against the side of the step 13, and the other end abuts against the hole elastic retaining ring 5.

[0028] Specifically, the tooling round seat 1 is composed of two disc-shaped structures of different sizes, and the two disc-shaped structures are synchronously distributed, wherein a side plane of the large disc can be used as a step 13 .

[0029] In this embodiment, by providing a hole elastic circlip 5, and providing a step 13 and an axial positioning groove 12 inside the tooling round seat 1, by providing the spline sleeve 2 in the mounting groove 11, one end of the spline sleeve 2 abuts against the side of the step 13, and the other end abuts against the hole elastic circlip 5 provided in the axial positioning groove 12, that is, the step 13 and the hole elastic circlip 5 can be used to limit the axial direction of the spline sleeve 2 to prevent the spline sleeve 2 from moving along the axial direction of the mounting groove 11, thereby preventing the spline 8 at the input end of the steering gear connected to the spline sleeve 2 from moving, so that the input end of the steering gear remains fixed.

[0030] Alternatively, if Figures 1 to 3 As shown, the steering gear input shaft spline fixing tool also includes a slotted cone-end set screw 6, a connecting hole 14 is provided on the side wall of the tool round seat 1, and a connecting groove is provided on the outer side wall of the spline sleeve 2, and the end of the slotted cone-end set screw 6 passes through the connecting hole 14 and is inserted into the connecting groove.

[0031] In this embodiment, a connecting hole 14 is formed on the tooling round seat 1, and a connecting groove is formed on the outer wall of the spline sleeve 2. A slotted cone-end set screw 6 is inserted into the connecting groove after passing through the connecting hole 14. The slotted cone-end set screw 6 can fix the spline sleeve 2 to prevent the spline sleeve 2 from sliding and rotating in the mounting groove 11, thereby preventing the spline 8 at the input end of the steering gear connected to the spline sleeve 2 from moving, so that the input end of the steering gear remains fixed.

[0032] Alternatively, if Figure 2 As shown, the steering gear input shaft spline fixing tool further includes a spring 7 , and the spring 7 is arranged between the step 13 and the spline sleeve 2 , and the axial direction of the spring 7 is parallel to the axial direction of the spline sleeve 2 .

[0033] In this embodiment, by arranging the spring 7 between the step 13 and the spline sleeve 2, the spline sleeve 2 can be compressed by the elastic force generated by the spring 7. Secondly, when the spline sleeve 2 is damaged and needs to be replaced, the hole elastic circlip 5 is removed, and the spline sleeve 2 can be quickly separated from the installation groove 11 under the elastic force of the spring 7, so that the spline sleeve 2 can be replaced easily.

[0034] Alternatively, if Figure 3 and Figure 4 As shown, a plurality of slide blocks 51 are provided on the elastic retaining ring 5 for the hole, and a slide groove 15 is provided on the inner side wall of the tooling round seat 1 relative to the slide block 51, the axial direction of the slide groove 15 is parallel to the axial direction of the axial positioning groove 12, and the slide groove 15 is connected to the axial positioning groove 12.

[0035] In this embodiment, by providing a slider 51 on the hole elastic circlip 5 and opening a slide groove 15 on the inner side wall of the tooling round seat 1, when installing the hole elastic circlip 5, the slider 51 can be aligned with the slide groove 15, so that the hole elastic circlip 5 can be pushed into the axial positioning groove 12 along the axial direction of the axial positioning groove 12, ensuring that the hole elastic circlip 5 can accurately fall into the axial positioning groove 12, preventing installation deviation, and ensuring the accuracy of installation of the hole elastic circlip 5.

[0036] Secondly, a plurality of sliders 51 are arranged on the elastic retaining ring 5 for the hole, and the plurality of sliders 51 can be inserted into the plurality of slide grooves 15 one by one to position the elastic retaining ring 5 for the hole, thereby preventing the elastic retaining ring 5 for the hole from moving in the axial positioning groove 12, thereby improving the stability of the elastic retaining ring 5 for the hole in the axial positioning groove 12, and ensuring the positioning effect of the elastic retaining ring 5 for the hole on the spline sleeve 2.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A steering gear input shaft spline fixing tool, characterized in that: The tooling round seat (1) comprises a tooling round seat (1) and a spline sleeve (2), wherein the tooling round seat (1) is connected to a threaded cover (3) of a steering gear, a mounting groove (11) is provided in the tooling round seat (1), the spline sleeve (2) is arranged in the mounting groove (11), and the spline sleeve (2) is connected to a spline (8) at an input end of the steering gear.

2. The steering gear input shaft spline fixing tool according to claim 1, characterized in that: It also includes a positioning pin (4), which passes through the tooling round seat (1) and is connected to the threaded cover (3), and a plurality of the positioning pins (4) are provided, and the plurality of the positioning pins (4) are evenly distributed around the tooling round seat (1).

3. The steering gear input shaft spline fixing tool according to claim 2, characterized in that: It also includes a hole elastic circlip (5), an axial positioning groove (12) is also provided inside the tooling round seat (1), a step (13) is provided inside the tooling round seat (1), the axial positioning groove (12) is communicated with the mounting groove (11), the hole elastic circlip (5) is arranged in the axial positioning groove (12), one end of the spline sleeve (2) is used to abut against the side of the step (13), and the other end abuts against the hole elastic circlip (5).

4. The steering gear input shaft spline fixing tool according to claim 3, characterized in that: It also includes a slotted cone-end set screw (6), the side wall of the tooling round seat (1) is provided with a connecting hole (14), the outer side wall of the spline sleeve (2) is provided with a connecting groove, and the end of the slotted cone-end set screw (6) passes through the connecting hole (14) and is inserted into the connecting groove.

5. The steering gear input shaft spline fixing tool according to claim 4, characterized in that: It also comprises a spring (7), one end of the spring (7) abuts against the step (13), the other end of the spring (7) abuts against the spline sleeve (2), and the axial direction of the spring (7) is parallel to the axial direction of the spline sleeve (2).

6. The steering gear input shaft spline fixing tool according to any one of claims 3 to 5, characterized in that: The hole elastic retaining ring (5) is provided with a plurality of slide blocks (51); the inner side wall of the tooling round seat (1) is provided with a slide groove (15) relative to the slide block (51); the axial direction of the slide groove (15) is parallel to the axial direction of the axial positioning groove (12); and the slide groove (15) is connected to the axial positioning groove (12).

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