Automobile electric power steering system outer tie rod disassembly tool

Abstract

This utility model discloses a disassembly fixture for an automotive electric power steering system's outer tie rod, comprising a pressure block assembly for applying a force to the outer tie rod to separate it from the tie rod steering arm, a positioning block rotatably connected to the pressure block assembly, and a push rod threadedly connected to the positioning block for pushing the pressure block assembly to rotate. This automotive electric power steering system outer tie rod disassembly fixture can effectively, safely, and quickly disassemble the outer tie rod from the tie rod steering arm, improving the efficiency of outer tie rod disassembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle steering systems, and specifically relates to a tool for disassembling an outer tie rod of an automobile electric power steering system. Background Art

[0002] The electric power steering system of the car includes an outer tie rod for connecting with the tie rod steering arm of the car. The disassembly of the outer tie rod of the actual car mainly involves loosening and removing it from the tie rod steering arm. Since the outer diameter of the ball head of the outer tie rod matches the mounting hole of the tie rod steering arm in a tapered hole, when installing it on the actual car, it is necessary to tighten the nut at the ball head end of the outer tie rod to make it fit tightly to ensure a secure installation; however, during the disassembly process, since the outer tie rod and the tapered hole of the tie rod steering arm become very tight after being stressed, after loosening the nut on the ball head of the outer tie rod, it cannot be loosened and removed by manual pulling.

[0003] According to observations of the actual disassembly methods on site, when disassembling the outer tie rod, the operator mainly uses a hammer to knock on the edge of the connection between the tie rod steering arm and the outer tie rod to loosen it, and then manually pulls to loosen the outer tie rod; it is observed that during the knocking process, due to different accuracy and strength of the knocking, sometimes it takes a long time to loosen it, and sometimes the outer tie rod will be damaged or the tie rod steering arm will be deformed and dented. The disassembly process is very rough and unsafe.

[0004] In summary, the disassembly process of the external tie rod of the existing automobile electric power steering system has the following problems:

[0005] 1. During the disassembly process, manually knocking on the outer tie rod is inefficient;

[0006] 2. Due to the different accuracy and strength of the knocking, the corresponding outer tie rod will be damaged and the transverse tie rod steering arm will be deformed and dented. The disassembly process is very rough and poses a great safety hazard.

[0007] For example, the patent document with the authorization announcement number CN219212990U discloses a ball pin taper sleeve disassembly device for steering gear outer tie rod testing, including a ball pin and a taper sleeve, the ball pin includes a ball head and a pin connected to the ball head, the pin is a truncated cone structure with a thin top and a thick bottom, a taper sleeve is provided on the outer side of the pin, a nut is provided on the outer bottom of the taper sleeve, an external thread is provided on the upper part of the outer side of the taper sleeve, a connecting hole is provided in the middle of the taper sleeve, the taper sleeve is matched with the taper of the pin through the connecting hole, a disassembly sleeve is provided on the outer side of the taper sleeve, an opening is provided on the bottom surface of the disassembly sleeve, an internal thread is provided on the inner wall of the disassembly sleeve, a first threaded hole is provided at the top center of the disassembly sleeve, and a push rod is assembled in the first threaded hole. The technical solution disclosed in the patent document cannot solve the technical problems described above. Utility Model Content

[0008] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a tool for disassembling an outer tie rod of an automobile electric power steering system, the purpose of which is to improve the efficiency of disassembling the outer tie rod.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a disassembly tool for the external tie rod of the automobile electric power steering system, including a pressure block assembly for applying a force to the external tie rod to separate it from the transverse tie rod steering arm, a positioning block rotatably connected to the pressure block assembly, and a push rod threadedly connected to the positioning block and used to push the pressure block assembly to rotate.

[0010] The pressing block assembly comprises a pressing block body rotatably connected to the positioning block and a cushion block arranged on the pressing block body and used for contacting the push rod.

[0011] The pressing block assembly further includes a first bolt which is arranged on the pressing block body and is used for contacting the outer pull rod.

[0012] The first bolt is threadedly connected to the pressing block body, and the first bolt and the cushion block are respectively located at two ends of the pressing block body.

[0013] The push rod is threadedly connected to the positioning block.

[0014] The end of the positioning block is provided with an avoidance hole for the outer pull rod to pass through.

[0015] The utility model discloses a disassembling tool for the outer tie rod of the automobile electric power steering system, which can effectively, safely and quickly disassemble and release the outer tie rod from the tie rod steering arm, thereby improving the disassembling work efficiency of the outer tie rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This specification includes the following drawings, which show the following contents:

[0017] Figure 1 It is an axonometric diagram of the utility model of the disassembly tool for the outer tie rod of the automobile electric power steering system;

[0018] Figure 2 This is a front view of the utility model of the disassembly tool for the outer tie rod of the automobile electric power steering system;

[0019] Figure 3 It is a top view of the utility model of the disassembly tool for the outer tie rod of the automobile electric power steering system;

[0020] Figure 4 It is a cross-sectional view of the utility model of the disassembly tool for the outer tie rod of the automobile electric power steering system;

[0021] Figure 5 It is an exploded view of the utility model of the disassembly tooling for the outer tie rod of the automobile electric power steering system;

[0022] The markings in the figure are: 1. pressure block body; 2. cushion block; 3. positioning block; 4. push rod; 5. first bolt; 6. second bolt; 7. tie rod steering arm; 8. outer tie rod. DETAILED DESCRIPTION

[0023] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0024] It should be noted that, in the following embodiments, the “first” and “second” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequential order of execution, but are merely for the convenience of description.

[0025] like Figures 1 to 5 As shown, the utility model provides a tool for disassembling an outer tie rod of an automobile electric power steering system, including a pressure block assembly for applying a force to separate the outer tie rod 8 from the tie rod steering arm 7, a positioning block 3 rotatably connected to the pressure block assembly, and a push rod 4 threadedly connected to the positioning block 3 and used to push the pressure block assembly to rotate.

[0026] Specifically, if Figures 1 to 5 As shown, the pressing block assembly includes a pressing block body 1 rotatably connected to the positioning block 3, a cushion block 2 disposed on the pressing block body 1 and used to contact the push rod 4, and a first bolt 5 disposed on the pressing block body 1 and used to contact the outer pull rod 8. The first bolt 5 is threadedly connected to the pressing block body 1, and the first bolt 5 and the cushion block 2 are respectively located at opposite ends of the length direction of the pressing block body 1. The cushion block 2 is fixedly disposed at one end of the pressing block body 1, and a threaded hole for the first bolt 5 to pass through is disposed at the other end of the pressing block body 1, and the end of the first bolt 5 is used to contact the end face of one end of the outer pull rod 8.

[0027] like Figures 1 to 5 As shown, the pressing block body 1 is rotatably connected to the positioning block 3 through the second bolt 6 at a position between the two ends in the length direction, a through hole for the second bolt 6 to pass through is set at a position between the two ends in the length direction of the pressing block body 1, and a through hole for the second bolt 6 to pass through is also set at a position between the two ends in the length direction of the positioning block 3, and the axis of the first bolt 5 is perpendicular to the axis of the second bolt 6 in space.

[0028] like Figures 1 to 5 As shown, the push rod 4 is threadedly connected to the positioning block 3, and a threaded hole for the push rod 4 to pass through is set at one end of the positioning block 3. The push rod 4 is a hexagonal head bolt, and the axis of the push rod 4 is parallel to the axis of the first bolt 5.

[0029] like Figures 1 to 5 As shown, a circumvention hole for the outer tie rod 8 to pass through is provided at the end of the positioning block 3, and the circumvention hole and the push rod 4 are respectively located at opposite ends of the length direction of the positioning block 3. The circumvention hole is a through hole extending from one end surface of the positioning block 3 toward the inside of the positioning block 3. When in use, the rod portion of the outer tie rod 8 is embedded in the circumvention hole, the tie rod steering arm 7 connected to the rod portion of the outer tie rod 8 is located between the positioning block 3 and the pressing block body 1, and the ball head of the outer tie rod 8 is located outside the positioning block 3.

[0030] The specific dynamic operation process of the disassembly tooling for the outer tie rod of the automobile electric power steering system with the above structure is as follows:

[0031] Step 1: If Figure 4 As shown, after the outer tie rod is disassembled and assembled, it is installed to the connection between the outer tie rod 8 and the tie rod steering arm 7. The positioning block 3 is stably placed at a suitable position on the vehicle, and then the first bolt 5 is manually tightened to fix and lock it on the ball head tie rod end surface of the outer tie rod 8. At this time, the first bolt 5 and the outer tie rod 8 are in a coaxial state, and the tie rod steering arm 7 is located between the positioning block 3 and the pressure block body 1. The tie rod steering arm 7 is in contact with the surface of the positioning block 3. The positioning block 3 is opposite to the tie rod steering arm 7, which plays a limiting role.

[0032] Step 2: After installing and fixing the disassembly tooling, manually tighten the push rod 4 with an open-end wrench. The push rod 4 presses the pad 2 of the pressure block assembly upward, pushing the pressure block assembly to rotate. The first bolt 5 pushes the outer tie rod 8 installed on the tie rod steering arm 7. The outer tie rod 8 moves downward after being stressed until the outer tie rod 8 is separated from the tie rod steering arm 7.

[0033] Step 3: After loosening the two outer tie rods 8 on the vehicle, manually remove the disassembly tooling and put it back into the tool box.

[0034] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. The disassembly tool for the outer tie rod of the automobile electric power steering system is characterized by: The utility model comprises a pressing block assembly for applying a force to the outer tie rod to separate it from the tie rod steering arm, a positioning block rotatably connected to the pressing block assembly, and a push rod threadedly connected to the positioning block and used for pushing the pressing block assembly to rotate.

2. The tool for disassembling the outer tie rod of the automobile electric power steering system according to claim 1, characterized in that: The pressing block assembly comprises a pressing block body rotatably connected to the positioning block and a cushion block arranged on the pressing block body and used for contacting the push rod.

3. The tool for disassembling the outer tie rod of the automobile electric power steering system according to claim 2, characterized in that: The pressing block assembly further includes a first bolt which is arranged on the pressing block body and is used for contacting the outer pull rod.

4. The tool for disassembling the outer tie rod of the automobile electric power steering system according to claim 3, characterized in that: The first bolt is threadedly connected to the pressing block body, and the first bolt and the cushion block are respectively located at two ends of the pressing block body.

5. The tool for disassembling the outer tie rod of the electric power steering system of an automobile according to any one of claims 1 to 4, characterized in that: The push rod is threadedly connected to the positioning block.

6. The tool for disassembling the outer tie rod of the electric power steering system of an automobile according to any one of claims 1 to 4, characterized in that: The end of the positioning block is provided with an avoidance hole for the outer pull rod to pass through.

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