Clamp for assembling motor magnet of automobile steering engine

Abstract

The utility model relates to the technical field of steering systems, in particular to a fixture for assembling a motor magnet of an automobile steering engine. A clamp for assembling a motor magnet of an automobile steering engine comprises a tool base and is characterized in that the tool base is connected with the bottom of a motor guide seat, the top of the motor guide seat is connected with a motor mandrel supporting seat, and a magnet pressing head is arranged above the motor mandrel supporting seat. Compared with the prior art, the clamp for assembling the motor magnet of the automobile steering engine can efficiently and conveniently achieve magnet assembling of motor units of different models, is high in assembling quality, convenient to operate and high in universality, and improves the assembling efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of steering systems, in particular to a clamp for assembling motor magnets of automobile steering gears. Background Art

[0002] The motor unit is an important part of the electric power steering machine of the car, which can provide power for the steering machine and make the steering operation of the car easier. Figure 1 As shown, the motor unit is composed of ECU 1, magnet 2, motor 3 and other parts. The ECU controls the motor to output the assist torque according to the assist characteristics. Figure 2 As shown, the magnet 2 is composed of a metal ring 2-2 and a magnet 2-1. It is an important part in the motor unit. The magnet is installed on the motor shaft and can help the ECU indirectly obtain the position signal of the motor rotor. This signal is an important reference for the ECU to output the power assist command. Therefore, the assembly requirements of the magnet are relatively high, and its assembly quality will directly affect the power assist characteristics of the steering gear.

[0003] like Figure 3 As shown, when assembling the motor unit, the magnet 2 needs to be pressed onto the motor shaft 4. The force-bearing surfaces are required to be the metal ring 2-2 of the magnet 2 and the bottom of the motor shaft 4, and there is a certain distance requirement between the top surface of the magnet 2 and the end surface of the motor. When the motor shaft 4 is subjected to axial force relative to the motor housing, the position of the motor shaft 4 will move. When the magnet 2 is pressed, if the motor shaft 4 moves, it will cause abnormal noise or insufficient torque of the motor; if the magnet 2 is not pressed to the specified position, it will cause the motor rotor position signal to be inaccurate, thereby affecting the power-assisting characteristics; if the magnet is cracked or broken after pressing, it will cause the motor power-assisting to fail. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a fixture for assembling motor magnets of an automobile steering gear, which can efficiently and conveniently realize the magnet assembly of motor units of different models, has high assembly quality, is convenient to operate, has strong versatility, and improves assembly efficiency.

[0005] To achieve the above purpose, a fixture for assembling motor magnets of automobile steering gear is designed, including a tooling base, which is characterized in that: the tooling base is connected to the bottom of the motor guide seat, the top of the motor guide seat is connected to the motor core shaft support seat, and a magnet pressure head is provided above the motor core shaft support seat.

[0006] The magnetic pressing head is a stepped cylindrical structure, a groove one matching the magnetic structure is provided at the bottom of the magnetic pressing head, and a boss one is provided at the bottom of the groove one.

[0007] The motor guide seat is connected to the tooling base through a plurality of bolts.

[0008] The motor guide seat is a stepped disc structure, a groove 2 is arranged at the top of the motor guide seat, and a through hole 1 is arranged in the middle of the groove 2.

[0009] The motor core shaft support seat is a cylindrical structure, and a boss 2 connected to the motor core shaft is provided on the top of the motor core shaft support seat.

[0010] The motor core shaft support seat is embedded in the through hole 1 of the motor guide seat.

[0011] The tooling base is a rectangular or special-shaped panel structure, and a second through hole is provided in the middle of the tooling base.

[0012] Compared with the prior art, the utility model provides a fixture for assembling motor magnets of automobile steering gears, which can efficiently and conveniently realize the magnet assembly of motor units of different models, has high assembly quality, convenient operation, strong versatility, and improved assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the steering gear motor unit structure.

[0014] Figure 2 Schematic diagram of the explosion of the magnet structure.

[0015] Figure 3 Schematic diagram of the magnet being pressed onto the motor shaft.

[0016] Figure 4 It is a schematic diagram of the structure of the utility model.

[0017] Figure 5 It is a structural schematic diagram of the magnetic pressure head in the utility model.

[0018] Figure 6 It is a schematic diagram of the explosion of the structure of the utility model.

[0019] Figure 7 Schematic diagram of motor support method.

[0020] Figure 8 This is a schematic diagram of the press-fit magnet of the utility model. DETAILED DESCRIPTION

[0021] The utility model is further described below with reference to the accompanying drawings.

[0022] like Figures 4 to 6 As shown, the tooling base 8 is connected to the bottom of the motor guide seat 7, the top of the motor guide seat 7 is connected to the motor core shaft support seat 6, and a magnet pressure head 5 is provided above the motor core shaft support seat 6.

[0023] The magnetic pressing head 5 is a stepped cylindrical structure, a groove 5-1 matching the structure of the magnet 2 is provided at the bottom of the magnetic pressing head 5, and a boss 5-2 is provided at the bottom of the groove 5-1.

[0024] The motor guide seat 7 is connected to the tooling base 8 through a plurality of bolts.

[0025] The motor guide seat 7 is a stepped disc structure. A second groove 7 - 1 is provided at the top of the motor guide seat 7 , and a first through hole 7 - 2 is provided in the middle of the second groove 7 - 1 .

[0026] The motor core shaft support seat 6 is a cylindrical structure, and a boss 2 6 - 1 connected to the motor core shaft 4 is provided on the top of the motor core shaft support seat 6 .

[0027] The motor core shaft support seat 6 is embedded in the through hole 7 - 2 of the motor guide seat 7 .

[0028] The tooling base 8 is a rectangular or irregular panel structure, and a second through hole 8 - 1 is provided in the middle of the tooling base 8 .

[0029] like Figure 7 As shown, the outer ring of the motor bottom is tightly matched with the inner ring of the groove 2 7-1 of the motor guide seat 7, and the boss 2 6-1 of the motor core shaft support seat 6 is just aligned with the motor core shaft 4. After the motor is placed in the fixture, the motor housing is not stressed, and the motor core shaft 4 bears the weight of the entire motor, meeting the requirements for the stress point when the magnet 2 is pressed.

[0030] like Figure 5 As shown, the boss 1 5-2 of the magnet pressing head 5 is closely matched with the circular hole of the magnet 2 to play a centering role. The height of the boss 1 5-2 is specially designed. When the magnet 2 is pressed, when the boss 1 5-2 contacts the motor core shaft 4, the press-fit position of the magnet 2 just meets the requirements.

[0031] like Figure 8 As shown, the outer ring of the groove 5-1 of the magnet pressing head 5 is tightly matched with the inner ring of the motor hole, which plays a guiding role during press-fitting. During press-fitting, only the motor core shaft 4 is subjected to force.

[0032] like Figure 6 As shown, the motor guide seat 7 is installed on the tooling base 8 by bolts, and the motor core shaft support seat 6 is installed in a through hole 7-2 of the motor guide seat 7, which can be easily disassembled, assembled and replaced according to the motor model.

[0033] By selecting different magnet pressing heads 5 and motor guide seats 7, the magnet assembly of motor units of different models can be realized, and the versatility is strong.

[0034] The specific use process of this utility model:

[0035] According to the models of the motor 3 and the magnet 2, select the magnet pressure head 5 and the motor guide seat 7, and install them on the tooling base 8;

[0036] Put the motor 3 on the motor guide seat 7, at this time the force point is the motor core shaft 4, then put the magnet 2 into the magnet pressing head 5, and finally put the magnet pressing head 5 into the motor 3;

[0037] Start the press until the boss 5-2 of the magnet pressing head 5 contacts the motor core shaft 4. At this time, the magnet pressing depth meets the requirements.

[0038] After the press-fitting is completed, the magnet pressing head 5 and the motor 3 are taken out.

[0039] The utility model has a convenient assembly method, a compact fixture structure, simple operation, high assembly precision, and convenient installation and disassembly of the product, which effectively improves the assembly efficiency. By selecting different magnet pressure heads and motor guide seats, the magnet assembly of motor units of different models can be realized, which improves the versatility of the utility model and reduces the magnet assembly cost of the motor unit.

Claims

1. A fixture for assembling motor magnets of automobile steering gears, comprising a tooling base, characterized in that: The tooling base (8) is connected to the bottom of the motor guide seat (7), the top of the motor guide seat (7) is connected to the motor core shaft support seat (6), and a magnetic pressure head (5) is provided above the motor core shaft support seat (6).

2. A fixture for assembling motor magnets of a vehicle steering gear according to claim 1, characterized in that: The magnetic pressing head (5) is a stepped cylindrical structure, a groove (5-1) matching the structure of the magnet (2) is provided at the bottom of the magnetic pressing head (5), and a boss (5-2) is provided at the bottom of the groove (5-1).

3. The fixture for assembling motor magnets of a vehicle steering gear according to claim 1, characterized in that: The motor guide seat (7) is connected to the tooling base (8) via a plurality of bolts.

4. A fixture for assembling motor magnets of a vehicle steering gear according to claim 1 or 3, characterized in that: The motor guide seat (7) is a stepped disc structure, a second groove (7-1) is provided at the top of the motor guide seat (7), and a through hole (7-2) is provided in the middle of the second groove (7-1).

5. The fixture for assembling motor magnets of a vehicle steering gear according to claim 1, characterized in that: The motor core shaft support seat (6) is a cylindrical structure, and a second boss (6-1) connected to the motor core shaft (4) is provided on the top of the motor core shaft support seat (6).

6. A fixture for assembling motor magnets of a vehicle steering gear according to claim 1 or 5, characterized in that: The motor core shaft support seat (6) is embedded in a through hole 1 (7-2) of the motor guide seat (7).

7. A fixture for assembling motor magnets of a vehicle steering gear according to claim 1, characterized in that: The tooling base (8) is a rectangular or irregularly shaped panel structure, and a second through hole (8-1) is provided in the middle of the tooling base (8).

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