Oil seal fixing structure and motor

Abstract

The embodiment of the utility model discloses an oil seal fixing structure and a motor, and belongs to the technical field of motors. The oil seal fixing structure comprises a cover body, the cover body is provided with a first side and a second side which are opposite to each other, and the first side is used for plugging an oil seal while being connected with a front end cover; the functional assembly is detachably arranged on the second side of the cover body; the functional assembly is used for absorbing gear oil and / or adsorbing metal objects. According to the embodiment of the invention, the oil seal can be fixed and prevented from falling off, and metal filings and gear oil can be adsorbed in time and prevented from entering a motor cavity to affect normal operation of a motor.

Description

Technical Field

[0001] This application relates to the technical field of motors, and more particularly, to an oil seal fixing structure and a motor. Background Art

[0002] The servo motor oil seal, also known as the shaft seal, is a device used to seal the internal and external environments of the servo motor. Its main function is to prevent external contaminants such as dust, moisture, and liquids from entering the motor interior, while preventing the leakage of lubricating oil or grease inside the machine. By effectively maintaining the isolation of the internal and external environments, the servo motor oil seal can ensure the normal operation of the internal components of the motor, reduce wear and corrosion, and improve the reliability and lifespan of the equipment.

[0003] In existing servo motors, after the first installation of the oil seal or the second disassembly and reinstallation of the oil seal, the oil seal may fall out during motor operation due to the roughness of the oil seal chamber and the roughness of the oil seal position on the shaft diameter. Summary of the Invention

[0004] The embodiments of this application provide an oil seal fixing structure and a motor to at least solve the technical problems that after the first installation of the oil seal or the second disassembly and reinstallation of the oil seal, the oil seal may fall out during motor operation due to the roughness of the oil seal chamber and the roughness of the oil seal position on the shaft diameter, and moreover, the gear oil in the reducer may flow towards the motor side and enter the motor cavity, and the metal residues generated by the friction of the reducer gears are also likely to cut the lip of the oil seal.

[0005] According to the first aspect of the embodiments of this application, an oil seal fixing structure is provided, which is applied to a motor. The motor includes a front end cover, a rotating shaft inserted into the front end of the front end cover, and an oil seal sleeved on the circumferential outer wall of the rotating shaft. The oil seal fixing structure includes:

[0006] A cover body, which is used to connect with the front end cover. The cover body has opposite first and second sides. While the first side is used to connect with the front end cover, it abuts against the oil seal;

[0007] A functional component, which is detachably arranged on the second side of the cover body;

[0008] The functional component at least includes an oil absorbing member for absorbing gear oil and / or a magnetic member for adsorbing metal objects.

[0009] By adopting this embodiment, the oil seal can be abutted and sealed by the cover body to prevent the oil seal from falling off, and the oil stain and metal residues can be adsorbed by the detachable functional component, so as to prevent the oil stain and metal residues generated by the speed reducer connected to the motor from entering the inner cavity of the motor and affecting the normal operation of the motor. Moreover, since the functional component can be disassembled and assembled, it is very convenient to replace the functional component that has reached the adsorption limit, which not only facilitates after-sales maintenance, but also prevents the oil seal from falling off due to incorrect operation when disassembling the cover body.

[0010] In an alternative implementation manner of the embodiment of the present application in combination with the first aspect, the functional component further includes: a fixing member;

[0011] The fixing member is disposed on the second side of the cover body and cooperates with the cover body to form an accommodating space;

[0012] The oil-absorbing member and the magnetic member are stacked in the accommodating space;

[0013] Wherein, the fixing member is detachably connected to the cover body, so that the functional component is detachably disposed on the second side of the cover body.

[0014] By adopting this implementation manner, the fixing member is detachably connected to the cover body, so that the oil-absorbing member and the magnetic member can be replaced. After the oil-absorbing member and the magnetic member have been used for a long time and their adsorption capacity decreases, the old oil-absorbing member and magnetic member can be taken out by disassembling the fixing member, and then new magnetic and oil-absorbing members can be placed, and then limited and fixed by the fixing member.

[0015] In an alternative implementation manner of the embodiment of the present application in combination with the first aspect, the magnetic member is close to the fixing member and is stacked with the oil-absorbing member in the accommodating space;

[0016] The fixing member has a plurality of through holes with diameters gradually decreasing from the outside to the inside of the accommodating space, and the through holes penetrate through the fixing member and the magnetic member.

[0017] By adopting this implementation manner, in the accommodating space, the magnetic member and the oil-absorbing member can be arranged such that the magnetic member is close to the fixing member and the oil-absorbing member is close to the cover body. The magnetic member is closer to the outside of the accommodating space, which can have a better metal adsorption effect, and through the through holes penetrating through the magnetic member and the fixing member, the oil stain can flow to the oil-absorbing member and be absorbed by the oil-absorbing member.

[0018] In an alternative implementation manner of the embodiment of the present application in combination with the first aspect, the oil-absorbing member is close to the fixing member and is stacked with the magnetic member in the accommodating space;

[0019] The fixing member has a plurality of through holes with diameters gradually decreasing from the outside to the inside of the accommodating space, and the through holes penetrate through the fixing member.

[0020] By adopting this implementation method, the oil absorption member is closer to the fixing member, and the magnetic member is closer to the cover body, which can have a better oil absorption effect, so that the oil stains can be absorbed by the oil absorption member after passing through the through hole of the fixing member. The magnetic member has a certain magnetic attraction, so it can still make the oil seal fixing structure have a magnetic attraction effect and absorb metal residues.

[0021] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the fixing member includes a first pressure plate and a first cylindrical shell having openings at both axial ends, the first end opening of the first cylindrical shell is sleeved on the cover body, the inner wall of the first cylindrical shell is threadedly connected to the circumferential side wall of the cover body, the second end opening of the first cylindrical shell is connected to the first pressure plate, and the first pressure plate cooperates with the cover body to form an accommodating space.

[0022] By adopting this implementation method, the fixing parts and the internal magnetic parts and oil absorption parts can be disassembled and assembled more conveniently and quickly.

[0023] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the oil seal fixing structure further includes: a connecting bolt, the connecting bolt passing through the cover body and being used to be screwed with the front end cover to connect the cover body and the front end cover;

[0024] Wherein, the nut of the connecting bolt further has a connecting column at the end away from the stud;

[0025] The fixing member includes a second pressing plate and a support leg, one end of the support leg is connected to the second pressing plate, and the other end is connected to the connecting column, and the second plate body cooperates with the cover body to form an accommodating space.

[0026] By adopting this implementation method, the fixing piece can be made more stable and reliable, and the fixing piece can be prevented from falling off during the operation of the motor.

[0027] In combination with the first aspect, in an optional implementation of the embodiment of the present application, the fixing member includes a third pressure plate and a second cylindrical shell having openings at both axial ends, the second cylindrical shell is snap-fittedly connected to the cover body at the opening at its first end, the second cylindrical shell is connected to the third pressure plate at the opening at its second end, and the third pressure plate cooperates with the cover body to form an accommodating space.

[0028] By adopting this implementation method, the fixing piece can have both certain stability and reliability and certain installation convenience.

[0029] According to a second aspect of an embodiment of the present application, there is provided a motor, comprising:

[0030] Front end cover, rotating shaft, oil seal and the aforementioned oil seal fixing structure;

[0031] The rotating shaft is inserted at the front end of the front end cover, the oil seal sleeve is arranged on the circumferential side of the rotating shaft, and the oil seal fixing structure is arranged on the side of the oil seal away from the front end cover and is detachably connected to the front end cover.

[0032] In combination with the second aspect, in an optional implementation of the embodiment of the present application, the oil seal has an annular groove on a side facing the oil seal fixing structure;

[0033] The cover body of the oil seal fixing structure has an annular protrusion adapted to the annular groove;

[0034] When the oil seal fixing structure is connected to the front end cover, the annular protrusion is inserted into and abuts against the annular groove.

[0035] By adopting this implementation method, the cooperation between the annular protrusion and the annular groove can make the cover body have a better abutment and sealing effect on the oil seal, and can play a certain anti-deformation effect on the oil seal, and can prevent the oil seal from twisting and deforming between the cover body and the front end cover, affecting its sealing effect.

[0036] In combination with the second aspect, in an optional implementation of the embodiment of the present application, the front end cover has an annular groove, and the cover body of the oil seal fixing structure has a mounting foot, and the mounting foot is embedded in the annular groove and connected to the front end cover.

[0037] This implementation method can play a certain positioning role, and then connect with the front cover through the installation foot, which can avoid the cover body being deformed during the process of bolt tightening when the cover body is directly connected to the front cover, thereby affecting the sealing effect of the cover body.

[0038] According to the oil seal fixing structure of the embodiment of the present invention, the oil seal can be abutted and sealed by the cover body to prevent the oil seal from falling off, and the oil stains and metal residues can be adsorbed by the detachable functional components to prevent the oil stains and metal residues generated by the reducer connected to the motor from entering the inner cavity of the motor and affecting the normal operation of the motor. Moreover, since the functional components can be disassembled and assembled, the functional components that have reached the upper limit of adsorption can be easily replaced, which not only facilitates after-sales maintenance, but also prevents the oil seal from falling off due to incorrect operation when removing the cover body.

[0039] The technical effect obtained by the above-mentioned second aspect is similar to the technical effect obtained by the corresponding technical means in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic diagram of the structure of the motor provided in the embodiment of the present application;

[0041] Figure 2It is a partially enlarged schematic diagram of the structure of the motor provided by the embodiment of the present application;

[0042] Figure 3 It is provided by the embodiment of the present application Figure 2 The enlarged schematic diagram of the structure at position A in

[0043] Figure 4 It is a detachable structure schematic diagram of another fixing part provided by the embodiment of the present application;

[0044] Figure 5 It is a detachable structure schematic diagram of yet another fixing part provided by the embodiment of the present application;

[0045] Figure 6 It is a stacked structure schematic diagram of another magnetic part and an oil-absorbing part provided by the embodiment of the present application.

[0046] Reference numerals

[0047] 1. Front end cover; 2. Rotating shaft; 3. Oil seal; 301. Annular groove; 4. Cover body; 401. Annular protrusion; 5. Functional component; 51. Oil-absorbing part; 52. Magnetic part; 53. Fixing part; 5301. Through hole; 531. First pressing plate; 532. First cylindrical shell; 533. Second pressing plate; 534. Support leg; 535. Third pressing plate; 536. Second cylindrical shell; 6. Accommodation space; 7. Connecting bolt; 701. Connecting column; 8. Annular groove. Detailed description of the specific implementation

[0048] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0049] Throughout the specification and claims, the following terms have at least the meaning explicitly associated herein, unless the context otherwise requires. The meanings determined below do not necessarily limit the terms, but merely provide illustrative examples of the terms.

[0050] In the description of the present invention, the phrase "in one embodiment" does not necessarily refer to the same embodiment, although it may. Similarly, the phrase "in some embodiments", when used multiple times, does not necessarily refer to the same embodiment, although it may. As used herein, the term "or" is an inclusive "or" operator and is equivalent to the term "and / or", unless the context clearly dictates otherwise. The term "based on" is not exclusive and allows for additional factors not described, unless the context clearly dictates otherwise. The word "exemplary" as used herein means "serving as an example, instance, or illustration". Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. The scope of the present invention is limited only by the scope of the appended claims, and any examples set forth in this specification are not intended to be limiting, but merely to illustrate some of the many possible embodiments of the claimed invention. The various embodiments provided by the present invention should not be construed as limiting the scope of protection of the present invention.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0052] Furthermore, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0053] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the horizontal height of the first feature is lower than that of the second feature.

[0055] In the existing servo motors, after the oil seal is installed for the first time or reinstalled after secondary disassembly, the oil seal may fall out during the operation of the motor due to the roughness of the oil seal chamber and the roughness of the oil seal position on the shaft diameter. Moreover, the gear oil in the speed reducer may flow towards the motor side and enter the motor cavity, and the metal residues generated by the friction of the gears in the speed reducer are also likely to cut the lip of the oil seal.

[0056] Embodiment 1

[0057] Based on this, as Figures 1 - 6 shown, the oil seal fixing structure according to an embodiment of the present invention is applied to a motor. The motor includes a front end cover 1, a rotating shaft 2 inserted into the front end of the front end cover 1, and an oil seal 3 sleeved on the circumferential outer wall of the rotating shaft 2. The oil seal fixing structure includes:

[0058] A cover body 4, which is used to connect with the front end cover 1. The cover body 4 has opposite first and second sides. While the first side is used to connect with the front end cover 1, it abuts against the oil seal 3.

[0059] A functional component 5, which is detachably arranged on the second side of the cover body 4.

[0060] The functional component 5 at least includes an oil absorber 51 for absorbing gear oil and / or a magnetic part 52 for adsorbing metal objects.

[0061] Specifically, after the cover body 4 is connected with the front end cover 1 and the installation of the oil seal 3 is completed, the cover body 4 can be fixedly connected to the front end cover 1 by bolts. By abutting against and blocking the oil seal 3 with the cover body 4, it is possible to prevent the oil seal 3 from falling out during the operation of the motor, thereby losing functions such as anti-leakage, resistance to external impurities and sealing.

[0062] The functional component 5 at least includes an oil absorption member 51 and a magnetic member 52. The oil absorption member 51 can adsorb oil stains. When the motor and the reducer are used in combination, the gear oil of the reducer will flow towards the motor side. Through the adsorption function of the oil absorption member 51 for oil stains, the gear oil can be adsorbed in time, preventing the gear oil from contacting the oil seal 3 and even infiltrating into the motor cavity, resulting in oil stain contamination of core components such as the motor encoder, affecting the motor control accuracy, and even damaging the motor and reducing its service life. The magnetic member 52 itself has a certain magnetism and can hold metals, enabling the metal residues generated by the friction of the reducer gears to be adsorbed onto the surface of the magnetic member 52, preventing the metal residues from entering the motor cavity and avoiding damage to the motor due to the entry of metal foreign objects, thus affecting the service life of the motor.

[0063] Moreover, the functional component 5 and the cover body 4 are detachably connected. When the oil absorption member 51 and the magnetic member 52 have been used for a period of time and have adsorbed a large amount of oil stains or metal residues, they can be replaced by directly replacing the functional component 5, without the need to disassemble the entire oil seal fixing structure, without removing the cover body 4, and without affecting the fixing and sealing function of the cover body 4 for the oil seal 3. This not only makes after-sales maintenance operations more convenient but also avoids the oil seal 3 falling off due to incorrect operations.

[0064] According to the oil seal fixing structure of the embodiment of the present invention, the cover body 4 can abut against and seal the oil seal 3 to prevent the oil seal 3 from falling off, and the detachable functional component 5 adsorbs oil stains and metal residues, preventing the oil stains and metal residues generated by the reducer connected to the motor from entering the motor inner cavity and affecting the normal operation of the motor. Moreover, since the functional component 5 can be disassembled and assembled, it is very convenient to replace the functional component 5 that has reached the adsorption limit, which not only facilitates after-sales maintenance but also avoids the oil seal 3 falling off due to incorrect operations when disassembling the cover body 4.

[0065] Optionally, in an implementation manner of this embodiment, the functional component 5 further includes: a fixing member 53;

[0066] The fixing member 53 is disposed on the second side of the cover body 4 and cooperates with the cover body 4 to form an accommodation space 6;

[0067] The oil absorption member 51 and the magnetic member 52 are stacked in the accommodation space 6;

[0068] Wherein, the fixing member 53 is detachably connected to the cover body 4, so that the functional component 5 is detachably disposed on the second side of the cover body 4.

[0069] Specifically, the fixing member 53 can be a kind of housing. The fixing member 53 is connected to the cover 4 and forms an accommodating space 6 with the cover 4. Both the magnetic member 52 and the oil-absorbing member 51 can be a kind of sheet body and are stacked in the accommodating space 6. The fixing member 53 is detachably connected to the cover 4, enabling the oil-absorbing member 51 and the magnetic member 52 to be replaced. After the oil-absorbing member 51 and the magnetic member 52 have been used for a long time and their adsorption capacity decreases, the old oil-absorbing member 51 and magnetic member 52 can be taken out by disassembling the fixing member 53, and then new magnetic member 52 and oil-absorbing member 51 can be placed, and then limited and fixed by the fixing member 53.

[0070] Optionally, in an implementation manner of this embodiment, the magnetic member 52 is close to the fixing member 53 and is stacked with the oil-absorbing member 51 in the accommodating space 6;

[0071] The fixing member 53 has a plurality of through holes 5301 with diameters gradually decreasing from the outside to the inside of the accommodating space 6, and the through holes 5301 penetrate through the fixing member 53 and the magnetic member 52.

[0072] Specifically, in the accommodating space 6, the magnetic member 52 and the oil-absorbing member 51 can be arranged such that the magnetic member 52 is close to the fixing member 53 and the oil-absorbing member 51 is close to the cover 4. The magnetic member 52 is closer to the outside of the accommodating space 6, which can have a better metal adsorption effect. And through the through holes 5301 penetrating through the magnetic member 52 and the fixing member 53, the oil stain can flow to the oil-absorbing member 51 and be absorbed by the oil-absorbing member 51.

[0073] Optionally, in an implementation manner of this embodiment, the oil-absorbing member 51 is close to the fixing member 53 and is stacked with the magnetic member 52 in the accommodating space 6;

[0074] The fixing member 53 has a plurality of through holes 5301 with diameters gradually decreasing from the outside to the inside of the accommodating space 6, and the through holes 5301 penetrate through the fixing member 53.

[0075] Specifically, the oil-absorbing member 51 is closer to the fixing member 53, while the magnetic member 52 is close to the cover 4, which can have a better oil absorption effect. After the oil stain passes through the through holes 5301 penetrating through the fixing member 53, it can be adsorbed by the oil-absorbing member 51. And because the magnetic member 52 has a certain magnetic attraction, the oil seal fixing structure can still have a magnetic attraction effect to adsorb metal residues.

[0076] Optionally, in an implementation manner of this embodiment, the fixing member 53 includes a first pressing plate 531 and a first cylindrical housing 532 having openings at both axial ends. The first end opening of the first cylindrical housing 532 is sleeved on the cover body 4, the inner wall of the first cylindrical housing 532 is threadedly connected to the circumferential side wall of the cover body 4, the second end opening of the first cylindrical housing 532 is connected to the first pressing plate 531, and the first pressing plate 531 and the cover body 4 cooperate to form an accommodation space 6.

[0077] Optionally, in an implementation manner of this embodiment, the oil seal fixing structure further includes: a connecting bolt 7, the connecting bolt 7 penetrates through the cover body 4 and is used for being screwed to the front end cover 1 to connect the cover body 4 and the front end cover 1;

[0078] Wherein, the nut of the connecting bolt 7 further has a connecting column 701 at one end facing away from its stud;

[0079] The fixing member 53 includes a second pressing plate 533 and a support leg 534. One end of the support leg 534 is connected to the second pressing plate 533, and the other end is connected to the connecting column 701. The second plate body and the cover body 4 cooperate to form an accommodation space 6.

[0080] Optionally, in an implementation manner of this embodiment, the fixing member 53 includes a third pressing plate 535 and a second cylindrical housing 536 having openings at both axial ends. The second cylindrical housing 536 is connected to the cover body 4 in a snap-fit manner at the opening of its first end, the second cylindrical housing 536 is connected to the third pressing plate 535 at the opening of its second end, and the third pressing plate 535 and the cover body 4 cooperate to form an accommodation space 6.

[0081] Specifically, the fixing member 53 can have three connection methods to achieve detachable connection with the cover body 4. Among them, the fixing member 53 can include a first cylindrical housing 532 and a first pressing plate 531, which are threadedly connected to the cover body 4 by screwing, and a receiving space 6 is formed in cooperation with the cover body 4 through the first pressing plate 531. The first pressing plate 531 and the surface of the cover body 4 press and abut against the stacked oil-absorbing member 51 and magnetic member 52 to fix the oil-absorbing member 51 and the magnetic member 52. This connection method can disassemble and assemble the fixing member 53 and the internal magnetic member 52 and oil-absorbing member 51 more conveniently and quickly; the fixing member 53 can also include supporting feet 534 and a second pressing plate 533. The supporting feet 534 can be multiple and can be evenly arranged around the second pressing plate 533. The supporting feet 534 can extend to the connecting bolts 7 for connecting the cover body 4 and the front cover plate, and are connected and fixed with the connecting column 701 through a nut, so that the second pressing plate 533 and the cover body 4 cooperate to form a receiving space 6. The second pressing plate 533 and the surface of the cover body 4 press and abut against the stacked oil-absorbing member 51 and magnetic member 52 to fix the oil-absorbing member 51 and the magnetic member 52. This connection method can make the fixing member 53 more stable and reliable, and prevent the fixing member 53 from falling off during the operation of the motor; the fixing member 53 can also include a second cylindrical housing 536 and a third pressing plate 535. The second cylindrical housing 536 can be connected to the cover body 4 by snap-fit, so that the third pressing plate 535 and the cover body 4 cooperate to form a receiving space 6. The third pressing plate 535 and the surface of the cover body 4 press and abut against the stacked oil-absorbing member 51 and magnetic member 52 to fix the oil-absorbing member 51 and the magnetic member 52. This connection method has both a certain degree of stability and reliability and a certain degree of installation convenience.

[0082] Embodiment 2

[0083] The embodiment of the present application also provides an oil seal fixing structure, including: a front end cover 1, a rotating shaft 2, an oil seal 3, and the aforementioned oil seal fixing structure;

[0084] The rotating shaft 2 is inserted at the front end of the front end cover 1, the oil seal 3 is sleeved on the circumferential side of the rotating shaft 2, the oil seal fixing structure is arranged on the side of the oil seal 3 away from the front end cover 1, and is detachably connected to the front end cover 1.

[0085] Specifically, the functional component 5 at least includes an oil-absorbing member 51 and a magnetic member 52. The oil-absorbing member 51 can adsorb oil stains. When the motor is used in conjunction with the reducer, the gear oil of the reducer will flow towards the motor side. Through the adsorption function of the oil-absorbing member 51 for oil stains, the gear oil can be adsorbed in a timely manner, avoiding contact between the gear oil and the oil seal 3 and even infiltration into the motor cavity, resulting in oil stain contamination of core components such as the motor encoder, affecting the motor control accuracy, and even causing damage to the motor and reducing the service life of the motor. The magnetic member 52 itself has a certain magnetism and can hold metals. It can adsorb metal residues generated by the friction of the reducer gears onto the surface of the magnetic member 52, avoiding the entry of metal residues into the motor cavity and preventing the motor from being damaged due to the entry of metal foreign objects, thus affecting the service life of the motor.

[0086] Moreover, the functional component 5 and the cover body 4 are detachably connected. When the oil-absorbing member 51 and the magnetic member 52 have been used for a period of time and have adsorbed a large amount of oil stains or metal residues, they can be replaced by directly replacing the functional component 5, without the need to disassemble the entire oil seal fixing structure, without removing the cover body 4, and without affecting the fixing and sealing function of the cover body 4 for the oil seal 3. This is not only more convenient for after-sales maintenance operations but also can avoid the oil seal 3 falling off due to incorrect operations.

[0087] Optionally, in an implementation manner of this embodiment, one side of the oil seal 3 facing the oil seal fixing structure has an annular groove 301;

[0088] The cover body 4 of the oil seal fixing structure has an annular protrusion 401 adapted to the annular groove 301;

[0089] When the oil seal fixing structure is connected to the front end cover 1, the annular protrusion 401 is inserted into and abuts against the annular groove 301.

[0090] Specifically, through the cooperation of the annular protrusion 401 and the annular groove 301, the cover body 4 can have a better abutting and sealing effect on the oil seal 3, can play a certain role in preventing the deformation of the oil seal 3, and can avoid the oil seal 3 being distorted and deformed between the cover body 4 and the front end cover 1, affecting its sealing function.

[0091] Optionally, in an implementation manner of this embodiment, the front end cover 1 has an annular groove 8, and the cover body 4 of the oil seal fixing structure has a mounting foot, and the mounting foot is embedded in the annular groove 8 and connected to the front end cover 1.

[0092] Specifically, an annular groove 8 is provided in the front end cover 1. When the cover body 4 is connected to the front end cover 1, the mounting feet can be first inserted into the annular structure, which can play a certain positioning role. Then, by connecting the mounting feet to the front end cover 1, it can be avoided that when the cover body 4 is directly connected to the front end cover 1, the cover body 4 is deformed during the process of being pressed by the bolts, affecting the sealing effect of the cover body 4.

[0093] Among them, the cover body 4 can be an annular part. The diameter of its inner ring can be 8.9 mm or larger, and the diameter of its outer ring can be 16 mm or larger. The closer the inner ring of the cover body 4 is to the shaft extension position, the better the blocking effect. If the diameter of this dimension is too large, the oil seal 3 may fall off and lose the blocking effect; if the inner ring diameter is too small, there will be friction with the shaft extension, which may cause problems such as motor vibration and heating.

[0094] The inner diameter of the annular groove 8 can be 21.88 mm, the outer diameter can be 28.08 mm, and the depth can be 2 mm. And 4 x M1.6 threaded holes with a depth of 3 mm are provided in the annular groove 8 to facilitate the connection between the cover body 4 and the front end cover 1.

[0095] The material of the fixing part 53 can be ADC12, which is a common aluminum alloy material with good mechanical properties and processing properties and is widely used in the fields of automotive parts, mechanical equipment, and aerospace.

[0096] In the above-mentioned embodiments of the present application, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The steps shown in the relevant flowcharts can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here. In other words, the step order described in the previous embodiments is only an example. Based on the content of the embodiments of the present application, a reasonable adjustment of the step order is also within the protection scope of the embodiments of the present application.

[0097] The serial numbers of the embodiments of the present application or the order of introduction are only for description and do not represent the advantages or disadvantages of the embodiments.

[0098] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0099] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An oil seal fixing structure is applied to a motor. The motor includes a front end cover (1), a rotating shaft (2) inserted into the front end of the front end cover (1), and an oil seal (3) sleeved on the circumferential outer wall of the rotating shaft (2). It is characterized in that, The oil seal fixing structure includes: A cover body (4), which is used to connect with the front end cover (1). The cover body (4) has opposite first and second sides. While the first side is used to connect with the front end cover (1), it abuts against the side of the oil seal (3) facing away from the front end cover. A functional component (5), which is detachably arranged on the second side of the cover body (4). The functional component (5) at least includes an oil suction member (51) for absorbing gear oil and / or a magnetic member (52) for adsorbing metal objects.

2. The oil seal fixing structure according to claim 1, wherein The functional component (5) further includes: a fixing member (53); The fixing member (53) is arranged on the second side of the cover body (4) and cooperates with the cover body (4) to form an accommodation space (6); The oil suction member (51) and the magnetic member (52) are stacked in the accommodation space (6) along the direction from the first side to the second side of the cover body; Wherein, the fixing member (53) is detachably connected to the cover body (4) so that the functional component (5) is detachably arranged on the second side of the cover body (4).

3. The oil seal fixing structure according to claim 2, wherein The magnetic member (52) is closer to the fixing member (53) than the oil suction member (51) and is stacked with the oil suction member (51) in the accommodation space (6); The oil seal fixing structure further includes: a plurality of through holes (5301) respectively penetrating the fixing member (53) and the magnetic member (52) along the direction from the second side to the first side of the cover body (4), and the diameter of the through holes (5301) gradually decreases from the outside to the inside of the accommodation space (6).

4. The oil seal fixing structure according to claim 2, wherein The oil suction member (51) is closer to the fixing member (53) than the magnetic member (52) and is stacked with the magnetic member (52) in the accommodation space (6); The oil seal fixing structure further includes: a plurality of through holes (5301) respectively penetrating the fixing member (53) along the direction from the second side to the first side of the cover body (4), and the diameter of the through holes (5301) gradually decreases from the outside to the inside of the accommodation space (6).

5. The oil seal fixing structure according to claim 2, wherein The fixing member (53) includes: a first pressing plate (531) and a first cylindrical shell (532) whose axial one end is connected or integrated with the first pressing plate (531) and whose axial other end has an opening. The first end opening of the first cylindrical shell (532) is sleeved on the cover body (4), the inner wall of the first cylindrical shell (532) is threadedly connected with the circumferential side wall of the cover body (4), the second end opening of the first cylindrical shell (532) is connected with the first pressing plate (531), and the first pressing plate (531) and the cover body (4) cooperate to form the accommodation space (6).

6. The oil seal fixing structure according to claim 2, wherein The oil seal fixing structure further comprises: a connecting bolt (7), the connecting bolt (7) passing through the cover body (4) and being used to be screwed to the front end cover (1) so as to connect the cover body (4) and the front end cover (1); The nut of the connecting bolt (7) further comprises a connecting column (701) at the end away from the stud. The fixing member (53) comprises a second pressing plate (533) and a supporting foot (534), one end of the supporting foot (534) is connected to the second pressing plate (533), and the other end is connected to the connecting column (701), and the second pressing plate (533) cooperates with the cover body (4) to form the accommodating space (6).

7. The oil seal fixing structure according to claim 2, characterized in that: The fixing member (53) comprises a third pressure plate (535) and a second cylindrical shell (536) which is connected to or integrated with the third pressure plate (535) at one axial end and has an opening at the other axial end; the second cylindrical shell (536) is snap-fittedly connected to the cover body (4) at the opening at the first end thereof; the second cylindrical shell (536) is connected to the third pressure plate (535) at the opening at the second end thereof; the third pressure plate (535) cooperates with the cover body (4) to form the accommodating space (6).

8. The oil seal fixing structure according to any one of claims 1 to 7, characterized in that: The cover body (4) has a mounting foot for connecting to the front end of the front cover (1); When the mounting foot is connected to the front end cover, the main body of the cover body (4) is used to abut against the side of the oil seal (3) facing away from the front end cover.

9. The oil seal fixing structure according to claim 8, wherein the oil seal (3) has an annular groove (301) on one side facing the oil seal fixing structure, characterized in that: The cover body (4) has an annular protrusion adapted to fit the annular groove (301); When the mounting foot is connected to the front end cover (1), the annular protrusion is used to be inserted into and abut against the annular groove (301).

10. A motor, characterized in that, include: A front end cover (1), a rotating shaft (2), an oil seal (3), and an oil seal fixing structure according to any one of claims 1 to 7; The rotating shaft (2) is inserted into the front end of the front end cover (1), the oil seal (3) is sleeved on the circumferential side of the rotating shaft (2), and the oil seal fixing structure is arranged on a side of the oil seal (3) away from the front end cover (1) and is detachably connected to the front end cover (1).

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