Sensor assembling auxiliary mechanism of parallel shaft type electronic power steering machine

Abstract

The utility model relates to the technical field of automobile steering system assembly, in particular to a sensor assembly auxiliary mechanism of a parallel shaft type electronic power steering machine, which comprises an upper fixing plate, a connecting support, a lower fixing plate, a guide sleeve support, a guide pin, a spring, a boss and a guide block. Through holes are formed in the center of the upper fixing plate and the center of the lower fixing plate respectively, the upper ends of the guide blocks penetrate through the lower fixing plate and then are inserted into the bottoms of inner holes of the corresponding guide sleeve supports, the guide pins are embedded into the upper portions of the guide blocks, the heads of the guide pins are located in kidney-shaped holes in the surfaces of the guide sleeve supports, and springs are installed between the tops of the guide blocks and the inner surfaces of the guide sleeve supports. The boss is fixed to the bottom of the lower fixing plate and located between the two guide blocks. Compared with the prior art, the installation stability and accuracy of the sensor are ensured. The device has the advantages of being simple in structure, reliable in function and convenient to maintain and replace.

Description

Technical Field

[0001] This utility model relates to the field of automotive steering system assembly technology, specifically to a sensor assembly auxiliary mechanism for a parallel-axis electronic power steering system. Background Technology

[0002] In the production process of parallel-axis electronic power steering systems, sensors need to be assembled. During the sensor assembly process, a sensor assembly mechanism is used to fix the sensor and insert it into the housing to complete the assembly.

[0003] During sensor installation, it is crucial to ensure correct sensor positioning and prevent damage to the rack, thereby guaranteeing installation stability and meeting equipment alignment and sensor fixation angle consistency requirements. Therefore, optimizing the sensor assembly mechanism to ensure stable and accurate sensor installation is key to the design improvement of the electronic power steering sensor assembly mechanism.

[0004] Therefore, it is necessary to design a sensor assembly auxiliary mechanism for a parallel-axis electronic power steering system to ensure the stability and accuracy of sensor installation. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sensor assembly auxiliary mechanism for a parallel-axis electronic power steering system to ensure the stability and accuracy of sensor installation.

[0006] To achieve the above objectives, this utility model provides a sensor assembly auxiliary mechanism for a parallel-axis electronic power steering system, comprising an upper fixed plate, a connecting bracket, a lower fixed plate, a guide sleeve bracket, a guide pin, a spring, a boss, and a guide block. The upper and lower fixed plates are connected by the connecting bracket and the guide sleeve bracket, with the two guide sleeve brackets located in front of the connecting bracket. The upper fixed plate and the lower fixed plate each have a through hole in their center. The upper end of the guide block passes through the lower fixed plate and is inserted into the bottom of the inner hole of the corresponding guide sleeve bracket. The guide pin is embedded in the upper part of the guide block, with its head located in the waist-shaped hole on the surface of the guide sleeve bracket. A spring is installed between the top of the guide block and the inner surface of the guide sleeve bracket. The boss is fixed to the bottom of the lower fixed plate and located between the two guide blocks. A right-angle step is provided at the bottom of the guide block where it contacts the housing, and the bottom of the vertical side of the right-angle step has an outwardly inclined slope.

[0007] The guide pin and the guide block are fitted with an interference fit.

[0008] The guide block and the inner hole of the guide sleeve bracket, and the guide pin and the oblong hole of the guide sleeve bracket, are fitted with a clearance fit.

[0009] The surface of the lower fixing plate is provided with countersunk holes, the guide sleeve bracket and the countersunk holes are fitted with an interference fit, and the guide block and the countersunk holes are fitted with a clearance fit.

[0010] The upper fixing plate and the connecting bracket, the lower fixing plate and the connecting bracket, the upper fixing plate and the guide sleeve bracket, and the boss and the lower fixing plate are fixed with bolts, and the fixing holes of the bolts are countersunk holes.

[0011] The aforementioned boss is T-shaped.

[0012] The protrusion is a contoured structure of the sensor slot, and the surface of the contoured structure has a guide angle.

[0013] Compared with existing technologies, this invention designs an auxiliary mechanism for assembling sensors in a parallel-axis electronic power steering system, ensuring the stability and accuracy of sensor installation. This invention has the advantages of simple structure, reliable function, and ease of maintenance and replacement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a cross-sectional view of the present invention.

[0016] Figure 3 This is a sectional view of the guide sleeve bracket, guide pin, and guide tooling of this utility model after installation.

[0017] Figure 4 This is a diagram showing the usage state of this utility model.

[0018] Figure 5 This is a diagram showing the usage state of this utility model from another perspective.

[0019] Figure 6 This is a schematic diagram of the guide block of this utility model calibrating the housing slot. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings.

[0021] See Figure 1 , Figure 2 and Figure 3This utility model is a sensor assembly auxiliary mechanism for a parallel-axis electronic power steering system, including an upper fixed plate, a connecting bracket, a lower fixed plate, a guide sleeve bracket, a guide pin, a spring, a boss, and a guide block. The upper fixed plate 1 and the lower fixed plate 6 are connected by a connecting bracket 5 and a guide sleeve bracket 2. The two guide sleeve brackets 2 are located in front of the connecting bracket 5. The center of the upper fixed plate 1 and the center of the lower fixed plate 6 are respectively provided with through holes. The upper end of the guide block 8 passes through the lower fixed plate 6 and is inserted into the bottom of the inner hole of the corresponding guide sleeve bracket 2. The guide pin 4 is embedded in the upper part of the guide block 8, and the head of the guide pin 4 is located in the waist-shaped hole on the surface of the guide sleeve bracket 2. A spring 3 is installed between the top of the guide block 8 and the inner surface of the guide sleeve bracket 2. The boss 7 is fixed to the bottom of the lower fixed plate 6 and is located between the two guide blocks 8.

[0022] A right-angle step 81 is provided at the bottom of the guide block 8 where it contacts the housing. The bottom of the vertical edge of the right-angle step 81 has an outwardly inclined surface 82. The right-angle step 81 and the inclined surface 82 between the two guide blocks 8 form a funnel-shaped guide structure, facilitating the insertion of both sides of the housing slot 11 between the two guide blocks 8, thus completing the alignment of the housing slot 11. Figure 6 As shown.

[0023] The guide pin 4 and the guide block 8 are fitted with an interference fit to ensure the connection between the guide pin 4 and the guide block 8.

[0024] The guide block 8 and the inner hole of the guide sleeve bracket 2, and the guide pin 4 and the oblong hole of the guide sleeve bracket 2 are fitted with clearance. The guide block 8 can slide in the inner hole of the guide sleeve bracket 2, and the guide pin 4 can slide in the oblong hole of the guide sleeve bracket 2.

[0025] The surface of the lower fixed plate 6 is provided with a countersunk hole, and the guide sleeve bracket 2 is interference-fitted with the countersunk hole to ensure the connection between the guide sleeve bracket 2 and the lower fixed plate 6. The guide block 8 is clearance-fitted with the countersunk hole to facilitate the up and down movement of the guide block 8.

[0026] To ensure the reliability of the connection, the upper fixing plate 1 and the connecting bracket 5, the lower fixing plate 6 and the connecting bracket 5, the upper fixing plate 1 and the guide sleeve bracket 2, and the boss 7 and the lower fixing plate 6 are fixed with bolts, and the fixing holes of the bolts are countersunk holes.

[0027] The boss 7 is T-shaped. The boss 7 is a contour structure for the sensor slot. The surface of the contour structure has guide angles to facilitate the insertion of the magnetic ring guide groove into the boss 7 to determine the fixed angle of the sensor.

[0028] See Figure 4 , Figure 5In this invention, during sensor assembly, the sensor is placed on an assembly device, with the sensor input shaft 10 passing through the central through hole of the upper fixing plate 1 and the lower fixing plate 6, and the magnetic ring guide groove inserted into the boss 7. At this time, the top of the sensor output shaft abuts against the upper tooling sensor of the assembly device. The Schunk cylinder gripper tooling 9 of the assembly device operates, clamping the sensor input shaft 10.

[0029] After the Schunk cylinder gripper 9 clamps the sensor input shaft 10, the servos of the assembly equipment work to the position where the sensor and rack mesh. Then, the housing slot 11 is aligned using the right-angle step 81 and inclined plane 82 of the guide fixture 8. After alignment, the assembly equipment inserts the sensor into the housing, completing the sensor assembly.

[0030] This invention designs an auxiliary mechanism for assembling sensors in a parallel-axis electronic power steering system, ensuring the stability and accuracy of sensor installation. This invention has the advantages of simple structure, reliable function, and ease of maintenance and replacement.

Claims

1. A sensor assembly auxiliary mechanism of a parallel axis type electronic power steering machine, comprising an upper fixing plate, a connecting bracket, a lower fixing plate, a guide sleeve bracket, a guide pin, a spring, a boss, and a guide block, characterized in that: The connecting bracket (5) and the guide sleeve bracket (2) are connected between the upper fixed plate (1) and the lower fixed plate (6), two guide sleeve brackets (2) are located on the front side of the connecting bracket (5), the center of the upper fixed plate (1) and the center of the lower fixed plate (6) are respectively provided with through holes, the upper end of the guide block (8) passes through the lower fixed plate (6) and is inserted into the bottom of the inner hole of the corresponding guide sleeve bracket (2), the guide pin (4) is embedded in the upper part of the guide block (8), the head of the guide pin (4) is located in the waist-shaped hole on the surface of the guide sleeve bracket (2), the spring (3) is installed between the top of the guide block (8) and the inner surface of the guide sleeve bracket (2), the boss (7) is fixed on the bottom of the lower fixed plate (6) and located between the two guide blocks (8), the bottom of the guide block (8) is provided with a right-angle step (81) at the contact position with the shell, and the vertical edge of the right-angle step (81) is provided with an outwardly inclined inclined surface (82).

2. The sensor assembly assisting mechanism of a parallel-axis type electronic power steering apparatus according to claim 1, characterized by: The guide pin (4) and the guide block (8) are in interference fit.

3. The sensor assembly assisting mechanism of a parallel-axis type electronic power steering apparatus according to claim 1, characterized by: The guide block (8) and the inner hole of the guide sleeve bracket (2) and the guide pin (4) and the waist-shaped hole of the guide sleeve bracket (2) are in clearance fit.

4. The sensor assembly assisting mechanism of a parallel-axis type electronic power steering apparatus according to claim 1, characterized by: The surface of the lower fixed plate (6) is provided with a counterbore, the guide sleeve bracket (2) and the counterbore are in interference fit, and the guide block (8) and the counterbore are in clearance fit.

5. The sensor assembly assisting mechanism of a parallel-axis type electronic power steering apparatus according to claim 1, characterized by: The upper fixed plate (1) and the connecting bracket (5), the lower fixed plate (6) and the connecting bracket (5), the upper fixed plate (1) and the guide sleeve bracket (2), and the boss (7) and the lower fixed plate (6) are fixed by bolts, and the fixing holes of the bolts are counterbores.

6. The sensor assembly assisting mechanism of a parallel-axis type electronic power steering apparatus according to claim 1, characterized by: The boss (7) is in the shape of a "T".

7. The sensor assembly assisting mechanism of a parallel-axis type electronic power steering apparatus according to claim 1, characterized by: The boss (7) is a profiling structure of a sensor slot, and the surface of the profiling structure has a guide angle.

Images