CN210898738U

CN210898738U - Novel PMSM's of new energy automobile high abrasion rotary seal structure

Info

Publication number: CN210898738U
Application number: CN201922474103.2U
Authority: CN
Inventors: 周丽红
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-06-30
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a novel PMSM's of new energy automobile high abrasion rotary seal structure, including the PMSM main part, the left end of PMSM main part is provided with motor shaft, and is provided with rotary seal rubber in the motor shaft, the block groove is all seted up in motor shaft, the inlayer on polyacrylate layer is provided with the hardness enhancement layer, and all is provided with the strengthening rib in the hardness enhancement layer. This novel PMSM of new energy automobile's high wear-resisting rotary seal structure is provided with push rod, first movable bin, the second movable bin, slider, slide rail, first spring, second spring, block piece and block groove, when can guaranteeing the fastness of being connected between rotary seal rubber and the motor shaft through inferior device, also can make things convenient for the rotatory sealing rubber of dismantlement of accounting department, saves operating personnel's time and energy.

Description

Novel PMSM's of new energy automobile high abrasion rotary seal structure

Technical Field

The utility model relates to a PMSM seals technical field, specifically is a novel PMSM's of new energy automobile high abrasion rotary seal structure.

Background

The rotary seal belongs to one kind of dynamic seal, and the rotary seal comprises a rubber circle that provides elasticity for the sealed pole that has rotation or swing motion, axle, round pin, rotary joint etc. department, all has the hydraulic pressure of rotation type in each industrial fields such as engineering machine tool, building machinery and automotive equipment to rotate, and the rotary seal structure of the novel PMSM of current new energy automobile satisfies people's demand basically, nevertheless still has some inadequately in the use.

1. The rotary sealing structure of the novel permanent magnet synchronous motor of the existing new energy automobile and the connection mode between the permanent magnet synchronous motor are generally welded, but the connection mode has the defect that a rotary sealing ring is difficult to disassemble, and great energy and time are required to be consumed.

2. The rotary sealing structure of the existing novel permanent magnet synchronous motor of the new energy automobile only has simple wear resistance, and the commonly used silicone rubber mainly highlights the high temperature resistance and oil resistance of rubber, so that the abrasion of the motor to the rotary sealing rubber in the rotating process is severe, and therefore the problem is solved urgently by the high-wear-resistance rotary sealing structure of the novel permanent magnet synchronous motor of the new energy automobile.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel PMSM's of new energy automobile high abrasion rotary seal structure to the traditional fixed mode of the novel PMSM's of new energy automobile high abrasion rotary seal structure who provides among the solution above-mentioned background art is difficult to install and dismantles, and the relatively poor problem of wear resistance of rotary seal rubber itself.

In order to achieve the above object, the utility model provides a following technical scheme: a high-abrasion-resistance rotary sealing structure of a novel permanent magnet synchronous motor of a new energy automobile comprises a permanent magnet synchronous motor main body, wherein a motor rotating shaft is arranged at the left end of the permanent magnet synchronous motor main body, rotary sealing rubber is arranged on the motor rotating shaft, fixed shells are fixed on the rotary sealing rubber, push rods are arranged on the fixed shells, the inner ends of the push rods pass through second movable cabins and are fixed with first movable cabins, the second movable cabins are arranged in the fixed shells, the first movable cabins are connected with slide rails through slide blocks, the slide rails are arranged on the inner walls of the second movable cabins, the inner ends of the first movable cabins are connected with the inner walls of the second movable cabins through first springs, second springs are arranged in the first movable cabins, the bottom ends of the second springs are fixed with clamping blocks, and the bottom ends of the clamping blocks pass through the outer walls of the first movable cabins and are clamped with clamping grooves, the motor shaft all sets up in the block groove, the inlayer on rotary seal rubber is provided with the butadiene-acrylonitrile rubber layer, and the inlayer on butadiene-acrylonitrile rubber layer is provided with the polyacrylate layer, the inlayer on polyacrylate layer is provided with the hardness enhancement layer, and all is provided with the strengthening rib in the hardness enhancement layer.

Preferably, the push rods are provided with four groups, and the push rods on the right side are hoe-shaped.

Preferably, the length of the slide rail is greater than the width of the engaging groove, and the slide rail is connected with the slide block in a sliding manner.

Preferably, the outer ends of the first springs are fixed with the outer wall of the first movable bin, and the inner ends of the first springs are fixed with the inner wall of the second movable bin.

Preferably, the top ends of the second springs are fixed to the inner wall of the first movable bin, and the bottom ends of the second springs are fixed to the clamping block.

Preferably, the volume of the clamping block is equal to that of the clamping groove, and the inner walls of the clamping block and the clamping groove are both arc-shaped.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the high-abrasion-resistance rotary sealing structure of the novel permanent magnet synchronous motor of the new energy automobile is provided with a push rod, a first movable bin, a second movable bin, a slide block, a slide rail, a first spring, a second spring, a clamping block and a clamping groove, when an operator installs rotary sealing rubber on a motor rotating shaft, if the rotary sealing rubber needs to be disassembled, the push rods at two ends are firstly pressed to push the first movable bin to move inwards in the slide rail through the slide block, at the moment, the first movable bin extrudes the first spring to generate deformation, the first movable bin moves and simultaneously drives the clamping block to move inwards, the inner side of the clamping block is contacted with the clamping groove, the clamping block moves upwards along with the gradient of the clamping groove, the clamping block extrudes the second spring to generate deformation, at the moment, the rotary sealing rubber is taken down from a fixed shell, the motor rotating shaft only needs to be sleeved with the rotary sealing rubber, and then the clamping block is clamped with the, can guarantee through inferior device when the fastness of being connected between rotary seal rubber and the motor shaft, also can make things convenient for the dismantlement rotary seal rubber of accounting department of operating personnel, save operating personnel's time and energy.

2. The high-abrasion-resistance rotary sealing structure of the novel permanent magnet synchronous motor of the new energy automobile is provided with a nitrile rubber layer, a polyacrylate layer, a hardness reinforcing layer and a reinforcing rib, wherein the nitrile rubber layer is arranged at the inner layer of the rotary sealing rubber, the nitrile rubber layer is prepared from butadiene and acrylonitrile by emulsion polymerization, the nitrile rubber layer is mainly produced by low-temperature emulsion polymerization, the oil resistance is excellent, the abrasion resistance is higher, the heat resistance is better, the bonding force is strong, the polyacrylate layer is arranged at the outer layer of the nitrile rubber layer, the polyacrylate layer is excellent in oil resistance and heat resistance, is abrasion-resistant, ozone-resistant and ultraviolet radiation-resistant, particularly is resistant to lubricating oil containing extreme pressure liquid, gear oil, motor oil, engine oil, petroleum hydraulic oil and the like, the hardness reinforcing layer is arranged at the outer layer of the polyacrylate layer, the reinforcing rib is fully distributed in the hardness reinforcing rib, and a reinforcing plate is additionally arranged, the reinforcing ribs are commonly called as reinforcing ribs to increase the strength of a joint surface, the strength and the rigidity of a product are enhanced under the condition that the wall thickness of the rotary sealing rubber is not increased, the material consumption is saved, the weight is reduced, the cost is reduced, the wear resistance and the oil resistance of the rotary sealing rubber are improved through the matching of the nitrile rubber layer and the polyacrylate layer, the hardness and the toughness of the whole rotary sealing rubber are improved through the nitrile rubber layer, the polyacrylate layer and the hardness reinforcing layer, and the service life of the rotary sealing rubber is prolonged.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic sectional view of the partial structure of the present invention;

fig. 3 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention;

fig. 4 is a schematic front sectional view of the structure of fig. 3 according to the present invention.

In the figure: 1. a permanent magnet synchronous motor main body; 2. a motor shaft; 3. rotating the sealing rubber; 4. a stationary case; 5. a push rod; 6. a first movable bin; 7. a second movable bin; 8. a slider; 9. a slide rail; 10. a first spring; 11. a second spring; 12. a clamping block; 13. a clamping groove; 14. a nitrile rubber layer; 15. a polyacrylate layer; 16. a hardness reinforcing layer; 17. and (5) reinforcing ribs.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a high-abrasion-resistance rotary sealing structure of a novel permanent magnet synchronous motor of a new energy automobile comprises a permanent magnet synchronous motor main body 1, a motor rotating shaft 2 is arranged at the left end of the permanent magnet synchronous motor main body 1, rotary sealing rubber 3 is arranged on the motor rotating shaft 2, a fixed shell 4 is fixed on the rotary sealing rubber 3, push rods 5 are arranged on the fixed shell 4, the inner ends of the push rods 5 penetrate through a second movable cabin 7 to be fixed with a first movable cabin 6, four groups of push rods 5 are arranged, the shape of the push rod 5 at the right side is a hoe shape, the four groups are arranged to ensure the stability of connection between the rotary sealing rubber 3 and the motor rotating shaft 2, the shape of the push rod 5 at the right side is convenient for an operator to press the push rod 5 from the right side, the push rod 5 at the right side is close to the permanent magnet synchronous motor main body 1 and is inconvenient to press, and the second, the first movable bin 6 is connected with the slide rail 9 through the slide block 8, the length of the slide rail 9 is larger than the width of the clamping groove 13, the slide rail 9 is connected with the slide block 8 in a sliding manner, the purpose of the arrangement is to ensure that when the push rod 5 is pressed, the first movable bin 6 can be driven to slide in the slide rail 9 through the slide block 8, and finally the bottom end of the clamping block 12 can be driven to move to the top end position of the clamping groove 13, so as to achieve the purpose of separating the clamping block 12 from the clamping groove 13, the slide rail 9 is arranged on the inner wall of the second movable bin 7, the inner end of the first movable bin 6 is connected with the inner wall of the second movable bin 7 through the first spring 10, the outer end of the first spring 10 is fixed with the outer wall of the first movable bin 6, the inner end of the first spring 10 is fixed with the inner wall of the second movable bin 7, the restoring force and the deformability generated by the elasticity of the first spring 10, so as to achieve the clamping and the separation of, the first movable bin 6 is internally provided with a second spring 11, the bottom end of the second spring 11 is fixed with the clamping block 12, the top end of the second spring 11 is fixed with the inner wall of the first movable bin 6, the bottom end of the second spring 11 is fixed with the clamping block 12, the self elasticity of the second spring 11 is utilized to generate a restoring force, so that the clamping block 12 can extrude the second spring 11 to generate deformation to separate from the clamping groove 13, and clamp with the clamping groove 13 under the pushing of the restoring force of the second spring 11, the bottom end of the clamping block 12 passes through the outer wall of the first movable bin 6 to clamp with the clamping groove 13, the size of the clamping block 12 is equal to that of the clamping groove 13, the inner walls of the clamping block 12 and the clamping groove 13 are both arranged in an arc shape, when the clamping block 12 moves upwards along the gradient of the clamping groove 13, the top end of the clamping block 12 extrudes the second spring 11 to generate deformation to rise, and finally separate from the clamping groove 13 to release clamping, the engaging grooves 13 are formed in the motor shaft 2.

The inner layer of the rotary sealing rubber 3 is provided with a nitrile rubber layer 14, the inner layer of the nitrile rubber layer 14 is provided with a polyacrylate layer 15, the inner layer of the polyacrylate layer 15 is provided with a hardness reinforcing layer 16, reinforcing ribs 17 are arranged in the hardness reinforcing layer 16, the nitrile rubber layer 14 is mainly produced by a low-temperature emulsion polymerization method, has excellent oil resistance, higher wear resistance, better heat resistance and strong bonding force, the outer layer of the nitrile rubber layer 14 is provided with the polyacrylate layer 15, the polyacrylate layer 15 has excellent oil resistance and heat resistance, wear resistance, ozone resistance and ultraviolet radiation resistance, and particularly resists lubricating oil containing extreme pressure agent, gear oil, motor oil, engine oil, petroleum hydraulic oil and the like, the outer layer of the polyacrylate layer 15 is provided with the hardness reinforcing layer 16, the hardness reinforcing ribs 17 are fully distributed in the hardness reinforcing layer 16, and the reinforcing ribs 17 are additionally arranged on the common vertical plane of the rotary sealing rubber 3, the nitrile rubber layer 14 and the polyacrylate, the reinforcing ribs 17 are commonly called as reinforcing ribs to increase the strength of a joint surface, enhance the strength and rigidity of a product under the condition that the wall thickness of the rotary sealing rubber 3 is not increased, save the material consumption, reduce the weight and reduce the cost, improve the wear resistance and the oil resistance of the rotary sealing rubber 3 through the matching of the nitrile rubber layer 14 and the polyacrylate layer 15, and improve the hardness and the toughness of the whole rotary sealing rubber 3 through the nitrile rubber layer 14, the polyacrylate layer 15 and the hardness reinforcing layer 16, thereby prolonging the service life of the rotary sealing rubber 3.

The working principle is as follows: when an operator installs the rotary sealing rubber 3 on the motor rotating shaft 2, if the operator needs to disassemble the rotary sealing rubber 3, the operator firstly presses the push rods 5 at two ends to push the first movable bin 6 to move inwards in the slide rail 9 through the slide block 8, at the moment, the first movable bin 6 extrudes the first spring 10 to generate deformation, the first movable bin 6 drives the clamping block 12 to move inwards while moving, the inner sides of the clamping block 12 are all contacted with the clamping groove 13, the clamping block 12 moves upwards along with the gradient of the clamping groove 13, the clamping block 12 moves upwards to extrude the second spring 11 to generate deformation, at the moment, the rotary sealing rubber 3 and the fixed shell 4 are taken down, the installation is carried out in a way that only the motor rotating shaft 2 is sleeved with the rotary sealing rubber 3, then the clamping block 12 is clamped with the clamping groove 13, the operator can conveniently disassemble the rotary sealing rubber 3 while the firmness of connection between the rotary sealing rubber 3 and the motor rotating shaft 2 can be ensured through a secondary device, saving time and effort for the operator.

The inner layer of the rotary sealing rubber 3 is provided with a nitrile rubber layer 14, the nitrile rubber layer 14 is prepared from butadiene and acrylonitrile by emulsion polymerization, the nitrile rubber layer 14 is mainly produced by low-temperature emulsion polymerization, the nitrile rubber layer 14 has excellent oil resistance, high wear resistance, high heat resistance and strong bonding force, the outer layer of the nitrile rubber layer 14 is provided with a polyacrylate layer 15, the polyacrylate layer 15 has excellent oil resistance and heat resistance, excellent wear resistance, ozone resistance and ultraviolet radiation resistance, and particularly has the resistance to lubricating oil containing extreme pressure agent, gear oil, motor oil, engine oil, petroleum hydraulic oil and the like, the outer layer of the polyacrylate layer 15 is provided with a hardness reinforcing layer 16, reinforcing ribs 17 are fully distributed in the hardness reinforcing layer 16, a reinforcing plate, commonly called a reinforcing rib 17, is added on the common vertical plane of the rotary sealing rubber 3, the nitrile rubber layer 14 and the polyacrylate layer 15 to increase the strength of a bonding surface, under the condition that the wall thickness of the rotary sealing rubber 3 is not increased, the strength and the rigidity of a product are enhanced, the material consumption is saved, the weight is reduced, the cost is reduced, the wear resistance and the oil resistance of the rotary sealing rubber 3 are improved through the matching of the nitrile rubber layer 14 and the polyacrylate layer 15, the hardness and the toughness of the whole rotary sealing rubber 3 are improved through the nitrile rubber layer 14, the polyacrylate layer 15 and the hardness reinforcing layer 16, the service life of the rotary sealing rubber 3 is prolonged, and finally, the operation is finished.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a novel PMSM's of new energy automobile high abrasion rotary seal structure, includes PMSM main part (1), its characterized in that: the left end of the permanent magnet synchronous motor main body (1) is provided with a motor rotating shaft (2), the motor rotating shaft (2) is provided with rotary sealing rubber (3), the rotary sealing rubber (3) is fixedly provided with a fixed shell (4), the fixed shell (4) is provided with a push rod (5), the inner end of the push rod (5) passes through a second movable bin (7) and is fixed with a first movable bin (6), the second movable bin (7) is arranged in the fixed shell (4), the first movable bin (6) is connected with a slide rail (9) through a slide block (8), the slide rail (9) is arranged on the inner wall of the second movable bin (7), the inner end of the first movable bin (6) is connected with the inner wall of the second movable bin (7) through a first spring (10), the first movable bin (6) is internally provided with a second spring (11), and the bottom end of the second spring (11) is fixed with a clamping block (12), the bottom of block (12) all passes first movable bin (6) outer wall and block groove (13) block, block groove (13) all are seted up on motor shaft (2), the inlayer of rotary seal rubber (3) is provided with butadiene-acrylonitrile rubber layer (14), and the inlayer of butadiene-acrylonitrile rubber layer (14) is provided with polyacrylate layer (15), the inlayer of polyacrylate layer (15) is provided with hardness enhancement layer (16), and all is provided with strengthening rib (17) in hardness enhancement layer (16).

2. The high-abrasion-resistance rotary sealing structure of the novel permanent magnet synchronous motor of the new energy automobile according to claim 1, is characterized in that: four groups of push rods (5) are arranged, and the right push rod (5) is hoe-shaped.

3. The high-abrasion-resistance rotary sealing structure of the novel permanent magnet synchronous motor of the new energy automobile according to claim 1, is characterized in that: the length of the slide rail (9) is larger than the width of the clamping groove (13), and the slide rail (9) is in sliding connection with the slide block (8).

4. The high-abrasion-resistance rotary sealing structure of the novel permanent magnet synchronous motor of the new energy automobile according to claim 1, is characterized in that: the outer end of the first spring (10) is fixed with the outer wall of the first movable bin (6), and the inner end of the first spring (10) is fixed with the inner wall of the second movable bin (7).

5. The high-abrasion-resistance rotary sealing structure of the novel permanent magnet synchronous motor of the new energy automobile according to claim 1, is characterized in that: the top end of the second spring (11) is fixed with the inner wall of the first movable bin (6), and the bottom end of the second spring (11) is fixed with the clamping block (12).

6. The high-abrasion-resistance rotary sealing structure of the novel permanent magnet synchronous motor of the new energy automobile according to claim 1, is characterized in that: the volume of the clamping block (12) is equal to that of the clamping groove (13), and the inner walls of the clamping block (12) and the clamping groove (13) are both arc-shaped.