Graphite rotor clamping mechanism of electronic vacuum pump for vehicle and working method thereof

Abstract

The application relates to a graphite rotor clamping mechanism of a vehicle electronic vacuum pump and a working method thereof, and belongs to the field of vehicle electronic vacuum pumps. The application comprises a transplanting mechanism, a lifting mechanism, a graphite rotor clamping mechanism, an original point induction sensor, a piston mounting seat, a piston, a clamping jaw mounting seat, a cantilever pin, a clamping jaw driving shaft, a driving shaft limiting sleeve and a clamping jaw. The graphite rotor clamping mechanism is connected with the transplanting mechanism, and the lifting mechanism is connected with the graphite rotor clamping mechanism. The original point induction sensor is connected with hoop one, the piston mounting seat, the piston and the clamping jaw mounting seat are connected, the cantilever pin is connected with the clamping jaw mounting seat through a snap spring, and the clamping jaw is mounted on the cantilever pin. The driving shaft limiting sleeve, the clamping jaw driving ring and the clamping jaw driving shaft are connected through bolts, and the bushing mounting seat is connected with the clamping jaw mounting seat. The application has the advantages of simple and reasonable structure design, safety and reliability, high precision, stable clamping assembly and satisfaction of the high-precision assembly requirement of the vehicle electronic vacuum pump.

Description

Technical Field

[0001] This invention relates to a mechanism and its working method, and more particularly to a graphite rotor clamping mechanism for an automotive electronic vacuum pump and its working method, which belongs to the field of automotive electronic vacuum pumps. Background Technology

[0002] The existing graphite rotor clamping mechanism for automotive electronic vacuum pumps is costly to manufacture, has unstable clamping and assembly, low assembly accuracy, and low working efficiency, and cannot meet the current high-functionality requirements.

[0003] Therefore, it is particularly necessary to provide a structure with a stable and reliable design that can achieve high-precision and stable clamping assembly, and meet the high-precision assembly requirements of automotive electronic vacuum pumps. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings in the prior art and to provide a graphite rotor clamping mechanism for automotive electronic vacuum pumps and its working method, which has a simple and reasonable structural design, is safe and reliable, can achieve high-precision and stable clamping assembly, and can meet the high-precision assembly requirements of automotive electronic vacuum pumps.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows: The graphite rotor clamping mechanism for an automotive electronic vacuum pump includes a transplanting mechanism and a lifting mechanism. Its features include: a graphite rotor clamping mechanism, a guide shaft, an origin sensing sensor, a clamping hoop, an oil-free bushing, a guide pin, an oil-free bushing mounting seat, a piston mounting seat, a piston, a gripper mounting seat, a cantilever pin, a gripper drive shaft, a drive shaft limiting sleeve, a push rod, an oil-free bushing, a compression spring, a bushing mounting seat, a gripper, an oil-free bushing, and a positioning pin. The graphite rotor clamping mechanism is connected to the transplanting mechanism, and the lifting mechanism is connected to the graphite rotor clamping mechanism. The guide shaft is fixed to clamp one, the origin sensing sensor is connected to clamp one, oil-free bushing one is installed inside the oil-free bushing mounting seat, and the guide pin is connected to clamp one; the piston mounting seat, piston and gripper mounting seat are connected, the cantilever pin is connected to the gripper mounting seat by a snap ring, the gripper is installed on the cantilever pin and can swing within a certain range; the drive shaft limit sleeve, gripper drive ring and gripper drive shaft are connected by bolts, oil-free bushing two is installed inside the push rod; the bushing mounting seat is connected to the gripper mounting seat, and oil-free bushing three is installed inside the bushing mounting seat; the positioning pin can slide inside oil-free bushing three under the action of compression spring four.

[0006] Preferably, the present invention also includes a second clamp, which is locked to the guide shaft by screws and fixed to the upper end face of the piston mounting seat by screws.

[0007] Preferably, the present invention further includes a limiting pin, wherein the limiting pin and the bushing mounting seat are interference fit.

[0008] Preferably, the guide shaft and the clamp are fixed together by screws.

[0009] This invention also provides a working method for a graphite rotor clamping mechanism for an automotive electronic vacuum pump, characterized by the following specific working method: The guide shaft is fixed to clamp one by screws; the origin sensing sensor is connected to clamp one, and when the mechanism is not in operation, the origin sensing sensor should output a signal; the guide pin is connected to clamp one, thereby preventing the mechanism from rotating; oil-free bushing one is installed inside the oil-free bushing mounting seat, the guide shaft slides inside oil-free bushing one, clamp two is locked to the guide shaft by screws, and clamp two is fixed to the upper end face of the piston mounting seat by screws. Therefore, under the action of compression spring one, the lower half of the entire mechanism floats up and down and automatically resets; the piston mounting seat, piston, and clamp mounting seat are connected by bolts; the cantilever pin is connected to the clamp mounting seat by a snap ring, the clamp is installed on the cantilever pin and can swing within a certain range. Under the action of the O-ring, the clamp is in an open state when not in operation. When the air inlet is cut off, the push rod moves downward under the action of compression spring three, pushing the clamp drive ring, thereby... The grippers clamp tightly. When air enters through the air inlet, the push rod drives the gripper drive ring upwards, at which point the grippers open under the action of the O-ring. The drive shaft limit sleeve, gripper drive ring, and gripper drive shaft are connected by bolts. The second oil-free bushing is installed inside the push rod. Under the action of the third compression spring, the gripper drive shaft can slide inside the second oil-free bushing, thus preventing the grippers from jamming. The bushing mounting seat and gripper mounting seat are connected by bolts. The limit pin and bushing mounting seat have an interference fit. The third oil-free bushing is installed inside the bushing mounting seat and fixed with a snap ring. The positioning pin can slide inside the third oil-free bushing under the action of the fourth compression spring. When the graphite rotor contacts the gripper mounting seat for gripping, the positioning pin moves upwards under the action of friction, which can center the product and prevent damage to the graphite rotor through buffering. When centering is completed, the positioning pin moves downwards under the action of the fourth compression spring. During assembly, when the motor shaft contacts the positioning pin, the positioning pin will move upwards, thus preventing interference with the motor shaft and ensuring assembly accuracy.

[0010] Compared with the prior art, the present invention has the following advantages and effects: the overall structure design is simple and reasonable, safe and reliable, and can achieve high precision and stable clamping assembly, which can meet the high precision assembly requirements of automotive electronic vacuum pumps; it has high stability and greatly reduces the manufacturing cost while meeting high functional requirements. Attached Figure Description

[0011] Figure 1 This is a schematic diagram showing the relative positions of the rotor in the automotive electronic vacuum pump assembly system according to an embodiment of the present invention.

[0012] Figure 2 This is a schematic diagram of the main structure of an embodiment of the present invention.

[0013] Figure 3 This is a schematic diagram of a half-section structure according to an embodiment of the present invention. Figure 1 .

[0014] Figure 4 This is a schematic diagram of a half-section structure according to an embodiment of the present invention. Figure 2 .

[0015] Figure 5 This is a schematic diagram of a half-section structure according to an embodiment of the present invention. Figure 3 .

[0016] In the diagram: 1. Transplanting mechanism; 2. Lifting mechanism; 3. Graphite rotor clamping mechanism; 4. Guide shaft; 5. Origin sensor; 6. Clamp 1; 7. Oil-free bushing 1; 8. Guide pin; 9. Oil-free bushing mounting base; 10. Compression spring 1; 11. Clamp 2; 12. Piston mounting base; 13. Piston; 14. Gripper mounting base; 15. O-ring; 16. Graphite rotor; 17. Cantilever pin; 18. Gripper drive shaft; 19. Drive shaft limit sleeve; 20. Push rod; 21. Oil-free bushing 2; 22. Compression spring 2; 23. Compression spring 3; 24. Limit pin; 25. Gripper drive ring; 26. Compression spring 4; 27. Bushing mounting base; 28. Oil-free bushing 4; 29. ​​Gripper; 30. Oil-free bushing 3; 31. Positioning pin; 32. Air inlet. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0018] Example

[0019] See Figures 1 to 5 The graphite rotor clamping mechanism of the vehicle electronic vacuum pump in this embodiment includes a transplanting mechanism 1, a lifting mechanism 2, a graphite rotor clamping mechanism 3, a guide shaft 4, an origin sensing sensor 5, a clamp 6, an oil-free bushing 7, a guide pin 8, an oil-free bushing mounting seat 9, a piston mounting seat 12, a piston 13, a gripper mounting seat 14, a cantilever pin 17, a gripper drive shaft 18, a drive shaft limiting sleeve 19, a push rod 20, an oil-free bushing 21, a compression spring 22, a compression spring 4, a bushing mounting seat 27, an oil-free bushing 4 28, a gripper 29, an oil-free bushing 30, and a positioning pin 31. The graphite rotor clamping mechanism 3 is connected to the transplanting mechanism 1, and the lifting mechanism 2 is connected to the graphite rotor clamping mechanism 3.

[0020] Figures 2-5As shown, guide shaft 4 is fixed to clamp 6 with screws, and origin sensor 5 is connected to clamp 6. When the mechanism is not in operation, origin sensor 5 should output a signal. Guide pin 8 is connected to clamp 6 to prevent rotation of the mechanism. Oil-free bushing 7 is installed inside oil-free bushing mounting base 9, and guide shaft 4 slides inside oil-free bushing 7. Clamp 11 is locked to guide shaft 4 with screws and is fixed to the upper end face of piston mounting base 12 with screws. Therefore, under the action of compression spring 10, the lower part of the entire mechanism can float up and down and automatically reset. Piston mounting base 12, piston 13, and gripper mounting base 14 are connected by bolts. The cantilever pin 17 is connected to the gripper mounting base 14 via a snap ring. The gripper 29 is mounted on the cantilever pin 17 and can swing within a certain range. Under the action of the O-ring 15, the gripper 29 is in an open state when not in operation. When the air inlet 32 ​​is cut off, the push rod 20 moves downward under the action of the compression spring 23, pushing the gripper drive ring 25, thereby clamping the gripper 29. When the air inlet 32 ​​supplies air, the push rod 20 drives the gripper drive ring 25 to move upward together, at which time the gripper 29 opens under the action of the O-ring 15. The drive shaft limiting sleeve 19 / gripper drive ring 25 is connected to the gripper drive shaft 18 by bolts. The oil-free bushing 21 is installed inside the push rod 20. Under the action of the compression spring 23, the gripper drive shaft 18 can slide inside the oil-free bushing 21, thereby preventing the gripper 29 from jamming. The bushing mounting base 27 and the gripper mounting base 14 are connected by bolts. The limiting pin 24 and the bushing mounting base 27 are interference-fitted. The oil-free bushing 30 is installed inside the bushing mounting base 27 and fixed with a snap ring. The positioning pin 31 can slide inside the oil-free bushing 30 under the action of the compression spring 26. When the graphite rotor 16 contacts the gripper mounting base 14 for gripping, the positioning pin 31 moves upward under the action of friction, which can center the product and at the same time, buffer the impact to prevent damage to the graphite rotor 16. After centering is completed, the positioning pin 31 moves downward under the action of the compression spring 26. During assembly, when the motor shaft contacts the positioning pin 31, the positioning pin 31 will move upward, thereby preventing interference with the motor shaft and ensuring assembly accuracy.

[0021] The clamping mechanism in this embodiment is simple and easy to maintain. The gripper drive only requires one air path control and one origin signal detection. The mechanism can float up and down to a certain extent during operation, which can protect the product and prevent it from being scratched. The mechanism can precisely position the product on the gripper, which can improve assembly accuracy and efficiency.

[0022] Based on the above description, those skilled in the art are already able to implement it.

[0023] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their parts and components. The above description is merely illustrative of the structure of the present invention. All equivalent or simple variations made based on the structure, features, and principles described in this patent concept are included within the protection scope of this patent. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to substitute them, as long as they do not deviate from the structure of the present invention or exceed the scope defined in these claims, all of which should fall within the protection scope of this invention.

Claims

1. A graphite rotor clamping mechanism for an automotive electronic vacuum pump, comprising a transfer mechanism (1) and a lifting mechanism (2), characterized in that: It also includes O-rings (15), compression spring one (10), compression spring three (23), graphite rotor clamping mechanism (3), guide shaft (4), origin sensing sensor (5), clamp one (6), oil-free bushing one (7), guide pin (8), oil-free bushing mounting seat (9), piston mounting seat (12), piston (13), gripper mounting seat (14), cantilever pin (17), gripper drive shaft (18), drive shaft limit sleeve (19), push rod (20), and oil-free The system includes bushing 2 (21), compression spring 4 (26), bushing mounting base (27), gripper (29), oil-free bushing 3 (30), and positioning pin (31). The graphite rotor clamping mechanism (3) is connected to the transplanting mechanism (1), and the lifting mechanism (2) is connected to the graphite rotor clamping mechanism (3). The guide shaft (4) is fixed to clamp 1 (6), the origin sensing sensor (5) is connected to clamp 1 (6), and oil-free bushing 1 (7) is installed inside the oil-free bushing mounting base (9). Pin (8) is connected to clamp one (6); piston mounting seat (12), piston (13) and gripper mounting seat (14) are connected, cantilever pin (17) and gripper mounting seat (14) are connected by snap ring, gripper (29) is mounted on cantilever pin (17) and can swing within a certain range; drive shaft limiting sleeve (19), gripper drive ring (25) and gripper drive shaft (18) are connected by bolts, oilless bushing two (21) is installed inside push rod (20); bushing mounting seat (27) is connected to the gripper mounting base (14), and the oilless bushing three (30) is installed inside the bushing mounting base (27); the positioning pin (31) can slide inside the oilless bushing three (30) under the action of the compression spring four (26); the O-ring (15) is connected to the gripper mounting base (14), and the guide shaft (4) is provided with the compression spring one (10), the compression spring three (23) is connected to the oilless bushing two (21), and the compression spring four (26) is connected to the positioning pin (31).

2. The graphite rotor clamping mechanism for an automotive electronic vacuum pump according to claim 1, characterized in that: It also includes a second clamp (11), which is locked to the guide shaft (4) by screws. The second clamp (11) is fixed to the upper end face of the piston mounting seat (12) by screws.

3. The graphite rotor clamping mechanism for an automotive electronic vacuum pump according to claim 1, characterized in that: It also includes a limiting pin (24), which has an interference fit with the bushing mounting seat (27).

4. The graphite rotor clamping mechanism for an automotive electronic vacuum pump according to claim 1, characterized in that: The guide shaft (4) and the clamp (6) are fixed together by screws.

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