Disassembling and reworking device for I-shaped rubber bushing of automobile electric power steering machine

Abstract

The utility model relates to the technical field of steering systems, in particular to a disassembling and reworking device for an I-shaped rubber bushing of an automobile electric power steering machine. A disassembling and reworking device for an I-shaped rubber bushing of an automobile electric power steering machine comprises a lead screw, a base and a sleeve and is characterized in that the lower portion of the lead screw is sleeved with the base, and the upper portion of the lead screw is sleeved with the sleeve; the bottom of the base is in threaded connection with the lead screw; and the upper part of the sleeve is in threaded connection with the lead screw. Compared with the prior art, the disassembling device is easy to operate, convenient to carry, practical and capable of disassembling and reworking the rubber bushing of the steering gear finished product, and the defects that a hydraulic disassembling device is inconvenient to carry and cannot disassemble and rework the steering gear finished product are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of steering systems, in particular to a disassembly and rework device for an I-shaped rubber bushing of an automobile electric power steering machine. Background Art

[0002] At present, in the automobile steering gear assembly production line, due to the special structural design of the I-shaped rubber bushing, the production process is prone to unqualified press-fitting defects such as the bushing not being flanging. The unqualified press-fitting parts need to be disassembled and reworked. The unqualified parts produced by the press-fitting station can be disassembled by the existing hydraulic rubber bushing disassembly equipment, and then returned to the press-fitting station for press-fitting. However, after the press-fitting process or when the steering gear finished product is found to have unqualified bushing press-fitting, the existing hydraulic disassembly equipment is affected by the interference of the tooling and cannot be disassembled, and after disassembly, it cannot be sent back to the production line to re-press-fit the bushing. This results in the scrapping of the steering gear finished product due to unqualified bushing press-fitting, resulting in waste of defective scrap. Summary of the invention

[0003] The utility model overcomes the deficiencies of the prior art and provides a disassembly and rework device for an I-shaped rubber bushing of an automobile electric power steering gear, which can disassemble and rework the finished rubber bushing of the steering gear, thereby eliminating the disadvantages of a hydraulic disassembly device that is inconvenient to carry and cannot disassemble and rework the finished steering gear.

[0004] In order to achieve the above-mentioned purpose, a disassembly and rework device for an I-shaped rubber bushing of an automobile electric power steering mechanism is designed, comprising a lead screw, a base, and a sleeve, and characterized in that: a base is sleeved at the lower part of the lead screw, and a sleeve is sleeved at the upper part of the lead screw; the bottom of the base is threadedly connected to the lead screw; the upper part of the sleeve is threadedly connected to the lead screw.

[0005] The sleeve is a cylindrical structure, the upper end of the sleeve is a sleeve mounting surface, and the structure of the sleeve mounting surface is a hexagonal structure. The outer diameter of the sleeve mounting surface is smaller than the outer diameter of the sleeve body, and a threaded structure connected to the screw thread is provided on the inner side of the upper part of the sleeve.

[0006] The base is a cylindrical structure, and a sealing bottom plate is connected to the bottom of the base, and a threaded hole threadedly connected to the lead screw is arranged in the center of the sealing bottom plate.

[0007] The upper part of the lead screw is provided with an upper thread structure which is threadedly connected to the sleeve, the lower end of the lead screw is provided with a lower thread structure which is threadedly connected to the base, and the middle part of the lead screw is a cylindrical structure.

[0008] A gap is provided between the bottom of the sleeve and the top of the base.

[0009] Compared with the prior art, the utility model is simple to operate, easy to carry, convenient and practical, and can dismantle and rework the finished rubber bushing of the steering gear, eliminating the shortcomings of the hydraulic dismantling device that is inconvenient to carry and cannot dismantle and rework the finished steering gear.

[0010] The utility model device is used for disassembling and reworking the rubber bushing, which greatly avoids the scrapping of the steering gear finished product due to unqualified bushing press-fitting, reduces production costs and reduces bad waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the structure of the utility model.

[0012] Figure 2 It is the front view of the structure of the utility model.

[0013] Figure 3 for Figure 2 Cross-sectional view of the structure.

[0014] Figure 4 It is a top view of the sleeve in the utility model.

[0015] Figure 5 for Figure 4 AA section view.

[0016] Figure 6 It is a schematic diagram of the screw structure in the utility model.

[0017] Figure 7 It is a cross-sectional view of the base in the utility model.

[0018] Figure 8 It is a schematic diagram of the connection between the utility model and the I-shaped rubber bushing and the steering gear housing.

[0019] Fig. 9 for Figure 8 Cross-sectional view of the structure. Implementation

[0020] The utility model is further described below with reference to the accompanying drawings.

[0021] like Figures 1 to 7 As shown, a base 3 is sleeved on the lower part of the lead screw 2, and a sleeve 1 is sleeved on the upper part of the lead screw 2; the bottom of the base 3 is connected to the lead screw 2 by threads; the upper part of the sleeve 1 is connected to the lead screw 2 by threads.

[0022] The sleeve 1 is a cylindrical structure, the upper end of the sleeve 1 is a sleeve mounting surface 1-1, and the structure of the sleeve mounting surface 1-1 is a hexagonal structure. The outer diameter of the sleeve mounting surface 1-1 is smaller than the outer diameter of the barrel of the sleeve 1. A threaded structure 1-2 threadedly connected to the screw 2 is provided on the inner side of the upper part of the sleeve 1.

[0023] The base 3 is a cylindrical structure, and a sealing bottom plate 3 - 1 is connected to the bottom of the base 3 . A threaded hole 3 - 2 threadedly connected to the lead screw 2 is provided in the center of the sealing bottom plate 3 - 1 .

[0024] An upper threaded structure 2-1 threadedly connected to the sleeve 1 is provided at the upper portion of the lead screw 2, a lower threaded structure 2-2 threadedly connected to the base 3 is provided at the lower end of the lead screw 2, and the middle portion of the lead screw 2 is a cylindrical structure.

[0025] A gap is provided between the bottom of the sleeve 1 and the top of the base 3 .

[0026] like Figure 8 , Fig. 9 As shown, the I-shaped rubber bushing 4 is a rubber component connecting the steering gear and the subframe. The I-shaped rubber bushing 4 is press-fitted on the steering gear housing 5, and then the bolts are fixed to the subframe through the holes of the I-shaped rubber bushing 4. During the driving process of the car, the subframe will drive the steering gear to vibrate due to the impact of the bumpy road. At this time, because there is a rubber bushing between the subframe and the steering gear, the hard contact between the steering gear and the subframe can be effectively reduced, and the metal collision sound between the steering gear and the subframe can be avoided, which plays a role in shock absorption and vibration noise reduction.

[0027] The use process of this utility model is as follows:

[0028] The device of the utility model is placed on the rework table, and the lead screw 2 is inserted into the inner hole of the I-shaped rubber bushing 4.

[0029] Screw the sleeve 1 into the screw 2 until it contacts the upper surface of the I-shaped rubber bushing 4.

[0030] Adjust the position of the sleeve 1 to ensure that the sleeve 1 and the I-shaped rubber bushing 4 are coaxial.

[0031] Use a ratchet wrench to insert into the mounting surface 1-1 on the top of the socket 1, and twist the socket 1 in a clockwise direction.

[0032] Screw the I-shaped rubber bushing 4 completely out of the hole of the steering gear housing 5, then twist the sleeve 1 counterclockwise until the sleeve 1 is separated from the lead screw 2, take out the I-shaped rubber bushing 4, and complete the disassembly operation.

[0033] Insert the lead screw 2 into the inner hole of the steering gear housing 5, and put a new I-shaped rubber bushing along the lead screw 2.

[0034] Screw the sleeve 1 clockwise along the screw 2 until it contacts the steering gear housing 5.

[0035] Adjust the positions of the sleeve 1 and the new I-shaped rubber bushing to ensure that the sleeve 1, the new I-shaped rubber bushing and the inner hole of the steering gear housing 5 are coaxial.

[0036] Use a ratchet wrench to twist the mounting surface 1 - 1 of the sleeve 1 clockwise until the upper surface of the new I-shaped rubber bushing is pressed to about 10 mm below the upper surface of the steering gear housing 5 .

[0037] Rotate the ratchet wrench counterclockwise to remove the socket 1.

[0038] The tooling of the utility model is turned around to press the new I-shaped rubber bushing into the steering gear housing 5 until the upper surface of the new I-shaped rubber bushing is 3 mm away from the upper surface of the steering gear housing 5 .

[0039] The tooling of the utility model is disassembled, the press-fitting state of the new I-shaped rubber bushing is checked, and the reworking operation of the new I-shaped rubber bushing is completed.

[0040] When the ratchet wrench is turned, the sleeve 1 moves downward along the screw 2, and the lateral force is converted into a downward force through the thread pair, thereby squeezing out the I-shaped rubber bushing; referring to the thread structure, when rotating counterclockwise, the sleeve 1 will move in the opposite direction and separate from the screw 2.

[0041] The utility model adopts the design of hydraulic disassembly base on the basis of the original hydraulic disassembly and rework device, fastens the base and the lead screw by thread glue and welding, cancels the original hydraulic cylinder and positioning tooling, uses a manual wrench to rotate the sleeve, and disassembles the original unqualified press-fitted bushing through the downward force of the sleeve and the lead screw, and then replaces the new rubber bushing, and similarly rotates the sleeve with a manual wrench, and presses the new bushing onto the steering gear through the downward force of the sleeve and the lead screw, thereby realizing the disassembly and rework operation of the unqualified press-fitted rubber bushing.

Claims

1. A disassembly and rework device for an I-shaped rubber bushing of an automobile electric power steering machine, comprising a lead screw, a base, and a sleeve, characterized in that: A base (3) is sleeved on the lower part of the lead screw (2), and a sleeve (1) is sleeved on the upper part of the lead screw (2); the bottom of the base (3) is connected to the lead screw (2) by means of threads; and the upper part of the sleeve (1) is connected to the lead screw (2) by means of threads.

2. The disassembly and rework device for the I-shaped rubber bushing of the electric power steering mechanism of an automobile according to claim 1 is characterized in that: The sleeve (1) is a cylindrical structure, the upper end of the sleeve (1) is a sleeve mounting surface (1-1), and the structure of the sleeve mounting surface (1-1) is a hexagonal structure, the outer diameter of the sleeve mounting surface (1-1) is smaller than the outer diameter of the barrel of the sleeve (1), and a threaded structure (1-2) threadedly connected to the lead screw (2) is provided on the inner side of the upper part of the sleeve (1).

3. The disassembly and rework device for the I-shaped rubber bushing of the electric power steering mechanism of an automobile according to claim 1 is characterized in that: The base (3) is a cylindrical structure, and is connected to a sealing bottom plate (3-1) at the bottom of the base (3). A threaded hole (3-2) threadedly connected to the lead screw (2) is provided at the center of the sealing bottom plate (3-1).

4. The disassembly and rework device for the I-shaped rubber bushing of the electric power steering mechanism of an automobile according to claim 1 is characterized in that: The upper part of the lead screw (2) is provided with an upper threaded structure (2-1) threadedly connected to the sleeve (1), the lower end of the lead screw (2) is provided with a lower threaded structure (2-2) threadedly connected to the base (3), and the middle part of the lead screw (2) is a cylindrical structure.

5. The disassembly and rework device for the I-shaped rubber bushing of the electric power steering mechanism of an automobile according to claim 1 is characterized in that: A gap is provided between the bottom of the sleeve (1) and the top of the base (3).

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