WO2023155270A1 - Housing for electrical machine - Google Patents

Housing for electrical machine Download PDF

Info

Publication number
WO2023155270A1
WO2023155270A1 PCT/CN2022/082844 CN2022082844W WO2023155270A1 WO 2023155270 A1 WO2023155270 A1 WO 2023155270A1 CN 2022082844 W CN2022082844 W CN 2022082844W WO 2023155270 A1 WO2023155270 A1 WO 2023155270A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
hole
positioning
motor
cover
Prior art date
Application number
PCT/CN2022/082844
Other languages
French (fr)
Chinese (zh)
Inventor
魏志远
黎思远
张少雄
Original Assignee
广东美的智能科技有限公司
高创传动科技开发（深圳）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东美的智能科技有限公司, 高创传动科技开发（深圳）有限公司 filed Critical 广东美的智能科技有限公司
Publication of WO2023155270A1 publication Critical patent/WO2023155270A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the present application relates to the field of casing sealing, in particular, to a sealing structure of a motor and the motor.
  • the sealing structure of the motor mainly includes the sealing structure between the back cover and the end cover.
  • the structural size of the back cover will be limited, and the wall thickness of the back cover is very small.
  • the performance requirements of the sealing structure are relatively high.
  • the sealing structure between the rear cover and the end cover of the motor mainly includes a sealing ring.
  • the area used for sealing on the surface of the end cover is also limited, which is very small (the narrowest width is about 1mm ), it is impossible to open a groove to accommodate the sealing ring, and there is a positioning problem for the sealing ring.
  • the sealing ring is squeezed, locally deformed, and even unilaterally tilted, and then the entire sealing ring is pulled to move sideways, so that part of the contact There is no sealing ring filling between the faces, and the sealing ability is lost.
  • an object of the present application is to provide a sealing structure for a motor, which has simple positioning and good sealing effect.
  • the motor includes a rear cover and an end cover fixedly connected
  • the sealing structure of the motor includes a gasket
  • the gasket includes a sealing part and a positioning part
  • the sealing part is Ring
  • the positioning part is located inside the sealing part
  • the thickness of the positioning part is greater than the thickness of the sealing part
  • the sealing part is sandwiched between the end surface of the back cover and the end surface of the end cover During this period, the positioning portion abuts against the inner wall surface of the rear cover.
  • the sealing part can better seal the assembly gap, it can also make the positioning part closely adhere to the inner wall surface of the rear cover, and the positioning part closely adhere to the inner wall of the rear cover.
  • the position of the sealing part can be restricted in turn, so that the sealing structure of the present application not only has better sealing ability, but also has better positioning ability, and can realize the rear cover and end cover more stably. seal between.
  • a limiting groove is provided between the end surface and the inner wall of the rear cover, the sealing part with at least part of the thickness is located inside the rear cover, and the sealing part and the limiting Groove abutment.
  • the thickness of the sealing portion is greater than the depth of the limiting groove, and/or the width of the sealing portion is greater than or equal to the width of the limiting groove.
  • an accommodating through hole is provided in the gasket, at least part of the positioning portion constitutes the inner wall of the accommodating through hole, an encoder is provided in the motor, and the encoding The encoder is located in the accommodating through hole, and at least a part of the inner wall of the accommodating through hole abuts against the encoder.
  • the accommodating through hole includes a main through hole and an auxiliary through hole, the auxiliary through hole is connected to the outside of the main through hole, and the encoder is arranged on the main through hole Inside, the encoder is fixed on the end cover through a rotation limiting member, the rotation limiting member is arranged in the auxiliary through hole, and the inner wall surface of the auxiliary through hole abuts against the rotation limiting member.
  • the gasket further includes a mounting portion, the mounting portion is located inside the sealing portion, the thickness of the mounting portion is the same as that of the sealing portion, and the mounting portion is A fastening hole is opened, and the fastening hole is used for installing fasteners to fix the rear cover and the end cover.
  • an avoidance hole is opened on the positioning part, and the cable is passed through the avoidance hole, and the cable is connected to the sensor on the stator in the motor and the sensor in the rear cover. between motherboards.
  • the width of the sealing part is less than or equal to 1mm.
  • the sealing gasket is an integral part made of nitrile rubber.
  • the present application also proposes a motor having the sealing structure of the above embodiment.
  • the motor according to the embodiment of the present application includes a back cover, an end cover and a sealing structure, the back cover and the end cover are fixedly connected, and the sealing structure of the motor is arranged between the back cover and the end cover.
  • the sealing structure of the motor of the present application is used to seal the assembly gap between the rear cover and the end cover of the motor, the sealing part can better seal the assembly gap and at the same time make the positioning part closely adhere to the rear cover
  • the sealing structure of the present application not only has better sealing ability, but also has Better positioning ability can realize the sealing between the rear cover and the end cover more stably.
  • Fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present application
  • Figure 2 is an enlarged view of area e in Figure 1;
  • FIG. 4 is a cross-sectional view of the end face b of the back cover of the sealing structure of the motor according to the embodiment of the present application;
  • FIG. 5 is a cross-sectional view of the bottom surface c of the limiting groove of the sealing structure of the motor according to the embodiment of the present application;
  • Fig. 6 is a structural schematic diagram of a gasket of a sealing structure of a motor according to an embodiment of the present application
  • FIG. 7 is a front view of a gasket of a sealing structure of a motor according to an embodiment of the present application.
  • FIG. 8 is a rear view of a gasket of a sealing structure of a motor according to an embodiment of the present application.
  • Fig. 9 is a left view of the gasket of the sealing structure of the motor according to the embodiment of the present application.
  • Fig. 10 is a top view of the sealing gasket of the sealing structure of the motor according to the embodiment of the present application.
  • Gasket 1 sealing part 11, positioning part 12, accommodating through hole 120, main through hole 121, auxiliary through hole 122, escape hole 123, mounting part 13, fastening hole 131,
  • the motor 100 includes a fixedly connected rear cover 20 and an end cover 30.
  • the rear cover 20 and the end cover 30 of the motor 100 can form the housing of the motor 100.
  • the rear cover needs to be fixed.
  • the assembly gap 3 between the 20 and the end cover 30 is sealed.
  • the first type is a sealing ring.
  • the area is also limited, very small (the narrowest width is about 1mm), and it is impossible to open a groove to accommodate the sealing ring.
  • the other is plastic-coated soft rubber. This solution involves the use of soft rubber with high cost, and it melts at the temperature generated by the rated operation of the motor and loses the sealing effect. It is very difficult to match materials that meet both cost requirements and motor temperature rise requirements, and cannot be promoted to mass production.
  • the present application proposes a sealing structure 10 between the rear cover 20 and the end cover 30 of the motor 100, which can well solve the problem that the assembly gap 3 between the rear cover 20 and the end cover 30 is not easy to seal .
  • the sealing structure 10 of the motor 100 includes a gasket 1, the gasket 1 includes a sealing part 11 and a positioning part 12, the sealing part 11 is annular, that is to say, the sealing part 11 are connected end to end to form an annular sealing ring.
  • the sealing part 11 is set in the assembly gap 3 and can completely close the assembly gap 3 to complete the sealing of the assembly gap 3 between the rear cover 20 and the end cover 30 .
  • the positioning part 12 is located inside the sealing part 11, and the thickness of the positioning part 12 is greater than the thickness of the sealing part 11, and the sealing part 11 is sandwiched between the end surface b of the rear cover 20 and the end surface a of the end cover 30, and the positioning part 12 abuts against the inner wall surface d of the back cover 20 . That is to say, the above-mentioned assembly gap 3 is constructed between the end surface b of the rear cover 20 and the end surface a of the end cover 30. In the up-down direction as shown in FIG. The end surface b of the cover 20 and the end surface a of the end cover 30 abut to close the assembly gap 3 constructed between the end surface b of the rear cover 20 and the end surface a of the end cover 30. Since the positioning part 12 is located inside the sealing part 11, And the thickness of the positioning portion 12 is greater than the thickness of the sealing portion 11 .
  • positioning portion 12 and sealing portion 11 can be generally constructed into the structure of " L " shape, and sealing portion 11 is the lateral edge of " L “ shape structure, and positioning portion 12 is " L " shape
  • the vertical side of the structure and when the sealing part 11 is sandwiched between the end face b of the back cover 20 and the end face a of the end cover 30, it is better to make the positioning part 12 closely adhere to the inside of the back cover 20. wall d, and after the positioning part 12 is closely attached to the inner wall d of the back cover 20, it can conversely limit the position of the sealing part 11, that is, limit the position of the sealing part 11 in the left and right direction as shown in FIG. relatively mobile.
  • the inner side here refers to the direction from the outer periphery of the sealing portion 11 toward the center of the sealing portion 11, and the thickness can refer to the up-down direction shown in FIG. 1 .
  • the sealing part 11 can better seal the assembly gap 3 while simultaneously It is possible to make the positioning part 12 closely adhere to the inner wall surface d of the rear cover 20, and when the positioning part 12 is closely attached to the inner wall surface d of the rear cover 20, the position of the sealing part 11 can be reversed. Therefore, the sealing structure 10 of the present application not only has a better sealing ability, but also has a better positioning ability, so that the sealing between the rear cover 20 and the end cover 30 can be realized more stably.
  • a limiting groove (not marked in the figure) is provided between the end surface b of the rear cover 20 and the inner wall surface, and the sealing part 11 with at least part of the thickness is located inside the rear cover 20, and the sealing part 11 and the limiting bit slot abutment.
  • the inner side of the end surface b of the rear cover 20 is recessed upwards to form a limiting groove, or it can be considered that the lower end of the inner wall surface d is recessed outwards to form a limiting groove, or it can be considered that the end surface b of the rear cover 20
  • the inner side is recessed upwards and the lower end of the inner wall d is recessed outwards.
  • the two recessed structures overlap each other to form a limiting groove between the end surface b of the back cover 20 and the inner wall d.
  • the sealing part 11 can be better assembled in the limiting groove.
  • the assembly efficiency can be improved.
  • the relative position of the sealing part 11 can be limited by the limiting groove, which can prevent the rear cover 20 and During the assembly process of the end cover 30, the sealing part 11 is shifted, so that the sealing effect can be guaranteed.
  • the sealing part 11 not only performs the first repositioning through the positioning part 12 in the self-sealing structure 10, but also passes through the rear position.
  • the limit groove on the cover 20 is repositioned for the second time. In this way, the double positioning can better improve the stability of the sealing part 11, and can better avoid the deviation of the sealing part 11 during the assembly process of the rear cover 20 and the end cover 30. shift.
  • the volume of the limiting groove can be greater than the volume of the sealing part 11, and the limiting groove
  • the volume of the sealing portion 11 may also be equal to that of the sealing portion 11; in another example, only a part of the sealing portion 11 is located in the limiting groove, so that the volume of the limiting groove is smaller than the volume of the sealing portion 11.
  • the volume of the limiting groove and the volume and the volume of the sealing part 11 are introduced, but the shape of the limiting groove and the shape of the sealing part 11 are not limited.
  • the limiting The shape of the groove in the cross-section shown in Figure 2 can be rectangular or not rectangular, such as zigzag, sinusoidal or other special-shaped structures, so there is no limitation here.
  • the shape of the sealing part 11 in The shape in the section shown in Figure 2 can be rectangular or not rectangular.
  • the shape of the sealing portion 11 is substantially the same as the shape of the limiting groove, or it can be different. Therefore, the sealing portion 11 is also used here.
  • the shape of is not limited.
  • the inner side of the end face b of the rear cover 20 is sunken upwards, and the lower end of the inner wall is sunken outward.
  • the two concave structures overlap each other to form a limit between the end face b of the rear cover 20 and the inner wall.
  • the shape of the limit groove in the cross section as shown in Figure 2 is rectangular
  • the shape of the sealing part 11 is approximately the same as the shape of the limit groove
  • the shape in the cross section as shown in Figure 2 is also rectangular
  • the volume of the limiting groove is smaller than the volume of the sealing portion 11, that is, only part of the sealing portion 11 is located in the limiting groove, and when the rear cover 20 of the motor 100 is matched with the end cover 30, the sealing portion 11 is located between the limiting groove and the end cover 30. between the end faces a of the end cover 30 to stably seal the assembly gap 3 between the rear cover 20 and the end cover 30 .
  • the thickness of the sealing portion 11 is greater than the depth of the limiting groove.
  • the thickness and depth can refer to the up-and-down direction as shown in Figure 2.
  • the sealing part 11 can be The back cover 20 and the end cover 30 are spaced apart, like this, when the back cover 20 and the end cover 30 are fastened and assembled, part of the sealing portion 11 can also be squeezed into the end surface b of the back cover 20 and the end cover 30 between the end faces a to enhance the sealing effect, and part of the sealing part 11 is clamped between the end face b of the back cover 20 and the end face a of the end cover 30, which can further improve the sealing reliability of the sealing part 11, and also That is, the rear cover 20 and the end cover 30 are not easy to shift after assembly, so that the sealing part 11 can be stably maintained in the assembly gap 3 to perform the sealing function
  • the width of the sealing part 11 is greater than or equal to the width of the limiting groove, thus, when the sealing part 11 is installed in the limiting groove, when the sealing part 11 is pressed by the rear cover 20 and the end cover 30, it will be located The sealing part 11 outside the limiting groove can be deformed to a certain extent.
  • part of the sealing part 11 located at the lower end of the limiting groove can be squeezed between the end surface b of the rear cover 20 and the end surface a of the end cover 30, so as to Strengthen the sealing, so that the part of the sealing part 11 located outside the limiting groove in the width direction can also achieve the effect of improving the sealing after a certain degree of deformation, so that the assembly between the rear cover 20 and the end cover 30
  • the gap 3 is sealed in a wrapped form, which has high reliability and good sealing performance.
  • an accommodating through hole 120 is provided in the gasket 1, at least part of the positioning portion 12 constitutes the inner wall surface of the accommodating through hole 120, and the motor 100 is provided with
  • the encoder 40 is located in the receiving through hole 120 , and at least a part of the inner wall of the receiving through hole 120 abuts against the encoder 40 . That is to say, the sealing gasket 1 surrounds the outer side of the encoder 40, and then by constructing the accommodating through hole 120 for accommodating the encoder 40 in the positioning portion 12, the positioning capability of the positioning portion 12 can be utilized to realize the positioning portion 12.
  • Cooperate with the encoder 40 that is, use the encoder 40 to realize the positioning of the gasket 1 .
  • At least a part of the inner wall surface of the accommodating through hole 120 can be made to abut against the encoder 40.
  • a positioning protrusion can be provided in the inner wall surface of the accommodating through hole 120, so that the positioning protrusion can abut against the encoder 40, thus, in the left-right direction as shown in FIG.
  • the positioning part 12 is equivalent to being sandwiched between the inner wall surface d of the back cover 20 and the encoder 40, so that the position of the gasket 1 is relatively stable after being positioned by the positioning part 12.
  • the inner wall of the accommodating through hole 120 can also be constructed on the inner wall of the accommodating through hole 120, such as elastic sheets, etc., which are not limited here; in another example, the inner wall of the accommodating through hole 120 is completely connected
  • the encoder 40 abuts, so that the encoder 40 can not only better position the gasket 1, but the gasket 1 can also position the encoder 40 in reverse, so that the encoder 40 or the gasket 1 can be assembled
  • the assembly efficiency can be improved, in this way, when the gasket 1 needs to be positioned, the location of the gasket 1 can also be realized only through the mutual positioning of the positioning part 12 and the encoder 40, the structure is simple, and the sealing and positioning effects are good.
  • the accommodating through hole 120 includes a main through hole 121 and an auxiliary through hole 122, the auxiliary through hole 122 is connected to the outside of the main through hole 121, the encoder 40 is arranged in the main through hole 121, and the encoding
  • the device 40 is fixed on the end cover 30 through the rotation limiting member 50 , the rotation limiting member 50 is arranged in the auxiliary through hole 122 , and the inner wall surface of the auxiliary through hole 122 abuts against the rotation limiting member 50 .
  • the rotation limiting member 50 is fixed on the end cover 30 to limit the rotation of the encoder 40, but in this application, by cooperating with the encoder 40 and the rotation limiting member 50 through the accommodating through hole 120 at the same time, it can
  • the triple positioning of the positioning part 12 is realized, that is, the positioning of the positioning part 12 and the inner wall surface d of the rear cover 20, the positioning of the positioning part 12 and the encoder 40, and the positioning of the positioning part 12 and the rotation limiting member 50, so that the positioning effect good.
  • the rotation limiting member 50 is generally triangular in shape. As shown in FIG. Positioning, in this way, not only the positioning of the positioning part 12 in the left and right direction can be realized, but also the positioning of the positioning part 12 in the circumferential direction can be realized, which can prevent the gasket 1 from shifting in the circumferential direction and affect the sealing effect.
  • the gasket 1 further includes a mounting portion 13, the mounting portion 13 is located inside the sealing portion 11, and a fastening hole 131 is opened on the mounting portion 13, and the fastening hole 131 is used to install a fastener to The rear cover 20 and the end cover 30 are fixed.
  • the fasteners when used to fasten between the rear cover 20 and the end cover 30, the fasteners can also pass through the fastening holes 131 on the gasket 1, so that the fastening holes 131 and the fastening
  • the cooperation of the parts can further realize the positioning of the gasket 1, wherein the fasteners and the fastening holes 131 can each be provided with multiples, and the multiple fasteners and the multiple fastening holes 131 can be arranged in one-to-one correspondence, Through the cooperation between multiple fasteners and multiple fastening holes 131, the positioning effect of the gasket 1 can be further improved.
  • the thickness of the installation part 13 is the same as the thickness of the sealing part 11, which can reduce the processing difficulty of the seal.
  • the thickness of the installation part 13 can also be different from the thickness of the sealing part 11.
  • the thickness of the mounting portion 13 is greater than that of the sealing portion 11 .
  • an avoidance hole 123 is opened on the positioning part 12, and the cable is passed through the avoidance hole 123, and the cable is connected to the sensor on the stator in the motor 100 and the between the motherboards in the back cover 20 . Therefore, by setting the avoidance hole 123, not only the assembly of the cable is facilitated, but also the positioning of the cable can be better realized. In addition, after the cable is positioned, the avoidance hole 123 can also better realize the positioning of the cable. Converging effect, so as to prevent the wire harness from being scattered and interfering with other structures in the motor 100 .
  • one avoidance hole 123 may be provided, or two or more than two avoidance holes may be provided, which may be provided according to the layout requirements of cables, and there is no limitation here.
  • An escape hole 123 is opened on the positioning portion 12 of the present application.
  • the width of the sealing portion 11 is less than or equal to 1mm, and the width direction here is the left-right direction as shown in FIG. Seal the relatively narrow assembly gap 3, such as between the rear cover 20 and the end cover 30 of the motor 100 of the present application.
  • the sealing structure 10 of the present application is also used between other structures with thinner walls
  • the gasket 1 is an integral part made of nitrile rubber.
  • the gasket 1 is made of nitrile rubber, a relatively low-cost raw material that is relatively easy to obtain.
  • the contact area is large enough, and it is not easy to be tilted and deformed during the pressing process, which will cause the deformation of the seal to fail.
  • nitrile rubber this material cannot It meets the plastic packaging process, but the temperature resistance can reach above 150 ° C, which solves the problem that the soft rubber is easy to melt and cannot be mass-produced.
  • the sealing gasket 1 is easy to locate, easy to install, and can achieve better sealing effect; compared with the sealing scheme of the plastic-coated soft rubber structure in the related art , the sealing structure provided by this application is made of nitrile rubber, which has low cost and meets the temperature resistance requirements, and will not melt under the normal working state of the motor 100, and can be promoted to the mass production stage. It is especially suitable for small servo motors 100, but the encoder 40 with a larger structural size has a good sealing effect and improves the manufacturing process.
  • the sealing structure 10 includes a gasket 1, the gasket 1 includes a sealing portion 11 and a positioning portion 12, the sealing portion 11 is annular, the positioning portion 12 is located inside the sealing portion 11, and the thickness of the positioning portion 12 is greater than the thickness of the sealing portion 11.
  • the part 11 is sandwiched between the end surface b of the rear cover 20 and the end surface a of the end cover 30, and the positioning part 12 abuts on the inner wall surface d of the rear cover 20. In the vertical direction shown in FIG.
  • the sealing part 11 The upper and lower surfaces of the back cover 20 and the end face a of the end cover 30 can respectively abut against the end face b of the back cover 20 and the end face a of the end cover 30 to close the assembly gap 3 constructed between the end face b of the back cover 20 and the end face a of the end cover 30.
  • Part 12 is positioned at the inner side of sealing part 11, and the thickness of positioning part 12 is greater than the thickness of sealing part 11, like this, with reference to accompanying drawing 2 shown, positioning part 12 and sealing part 11 can be roughly constructed into the structure of " L " shape, sealing The part 11 is the lateral side of the "L"-shaped structure, the positioning part 12 is the vertical side of the "L"-shaped structure, and the sealing part 11 is sandwiched between the end surface b of the rear cover 20 and the end surface a of the end cover 30 time, it is better to make the positioning part 12 close to the inner wall surface d of the back cover 20, and after the positioning part 12 is close to the inner wall surface d of the back cover 20, the sealing part can be reversed. 11, that is, to limit the relative movement of the sealing portion 11 in the left-right direction as shown in FIG. 2 .
  • the inner side of the end face b of the rear cover 20 is sunken upwards, and the lower end of the inner wall is sunken outward.
  • the two concave structures overlap each other to form a limit between the end face b of the rear cover 20 and the inner wall.
  • the shape of the limit groove in the cross section as shown in Figure 2 is rectangular
  • the shape of the sealing part 11 is approximately the same as the shape of the limit groove
  • the shape in the cross section as shown in Figure 2 is also rectangular
  • the volume of the limiting groove is smaller than the volume of the sealing portion 11, that is, only part of the sealing portion 11 is located in the limiting groove, and when the rear cover 20 of the motor 100 is matched with the end cover 30, the sealing portion 11 is located between the limiting groove and the end cover 30. between the end faces a of the end cover 30 to stably seal the assembly gap 3 between the rear cover 20 and the end cover 30 .
  • the thickness of the sealing part 11 is greater than the depth of the limiting groove, and the width of the sealing part 11 is greater than or equal to the width of the limiting groove. In this way, the part of the sealing part 11 located outside the limiting groove in the width direction and the thickness direction, After a certain degree of deformation, the effect of improving the sealing can also be achieved. In this way, the assembly gap 3 between the rear cover 20 and the end cover 30 is sealed in a wrapped form, which has high reliability and good sealing performance.
  • a housing through hole 120 is provided in the gasket 1, at least part of the positioning portion 12 constitutes the inner wall surface of the housing through hole 120, an encoder 40 is provided in the motor 100, and the encoder 40 is located in the inner wall of the motor 100. Placed in the through hole 120, at least a part of the inner wall surface of the accommodating through hole 120 abuts against the encoder 40, so that the positioning part 12 is equivalent to being sandwiched between the inner wall surface d of the back cover 20 and the encoder 40, so that This makes the position of the gasket 1 relatively stable after being positioned by the positioning portion 12 .
  • the accommodating through hole 120 includes a main through hole 121 and an auxiliary through hole 122, the auxiliary through hole 122 is connected to the outside of the main through hole 121, the encoder 40 is arranged in the main through hole 121, and the encoder 40 passes through the rotation limiting member 50 is fixed on the end cover 30 , the rotation limiting member 50 is disposed in the auxiliary through hole 122 , and the inner wall surface of the auxiliary through hole 122 abuts against the rotation limiting member 50 .
  • the rotation limiting member 50 is generally triangular. As shown in FIG. 6 , the inner wall surface of the auxiliary through hole 122 can abut against the two sides of the rotation limiting member 50 for positioning. The positioning can also realize the positioning of the positioning portion 12 in the circumferential direction, which can prevent the gasket 1 from shifting in the circumferential direction and affect the sealing effect.
  • the gasket 1 also includes a mounting portion 13 located inside the sealing portion 11 , and a fastening hole 131 is opened on the mounting portion 13 , and the fastening hole 131 is used for installing fasteners to fix the rear cover 20 and the end cover 30 .
  • Fasteners and fastening holes 131 can each be provided with a plurality, and multiple fasteners and multiple fastening holes 131 can be provided in one-to-one correspondence, through the cooperation between multiple fasteners and multiple fastening holes 131 , the positioning effect of the gasket 1 can be further improved.
  • an avoidance hole 123 is opened on the positioning part 12 , and the cable passes through the avoidance hole 123 , and the cable is connected between the sensor on the stator in the motor 100 and the main board in the back cover 20 .
  • the avoidance hole 123 can better realize the binding effect on the cables, thereby preventing the cables from being scattered and interfering with other structures in the motor 100 .
  • the present application also proposes a motor 100 having the sealing structure 10 of the above-mentioned embodiment.
  • the motor 100 includes a back cover 20, an end cover 30 and a sealing structure 10, the back cover 20 and the end cover 30 are fixedly connected, and the sealing structure 10 of the motor 100 is arranged on the back cover 20 and end cap 30.
  • the sealing part 11 can better seal the assembly gap 3 and at the same time make the positioning part 12 is preferably in close contact with the inner wall surface d of the back cover 20, and while the positioning part 12 is in close contact with the inner wall surface d of the back cover 20, it can conversely limit the position of the sealing part 11, so that
  • the sealing structure 10 of the present application not only has good sealing ability, but also has good positioning ability, and can realize the sealing between the rear cover 20 and the end cover 30 more stably.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

A sealing structure (10) comprises a sealing gasket (1). The sealing gasket (1) comprises a sealing portion (11) and a positioning portion (12). The sealing portion (11) is annular. The positioning portion (12) is arranged on the inner side of the sealing portion (11), and the thickness of the positioning portion (12) is greater than the thickness of the sealing portion (11). The sealing portion (11) is clamped between the end surface (b) of a rear cover (20) and the end surface (a) of an end cover (30). The positioning portion (12) abuts against the inner wall surface (d) of the rear cover (20).

Description

用于电机的壳体housing for motor
相关申请的交叉引用Cross References to Related Applications
本申请基于申请号为：202220309693.2，申请日为2022年02月15日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。This application is based on a Chinese patent application with application number: 202220309693.2 and a filing date of February 15, 2022, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.
技术领域technical field
本申请涉及壳体密封领域，具体而言，涉及一种电机的密封结构及电机。The present application relates to the field of casing sealing, in particular, to a sealing structure of a motor and the motor.
背景技术Background technique
电机的密封结构主要包括后盖和端盖之间的密封结构，对于具有较大尺寸的编码器的电机来说，其后盖的结构尺寸会受到限制，后盖的壁厚尺寸非常小，对密封结构的性能要求较高。The sealing structure of the motor mainly includes the sealing structure between the back cover and the end cover. For a motor with a larger encoder, the structural size of the back cover will be limited, and the wall thickness of the back cover is very small. The performance requirements of the sealing structure are relatively high.
现有技术中，电机的后盖和端盖之间的密封结构主要包括密封圈，具体实施过程中，因端盖的表面用于密封的面积也受到限制，非常小(最窄宽度在1mm左右)，无法开具容纳密封圈的沟槽，密封圈存在定位问题，在紧固过程中，密封圈受挤压，发生局部变形，甚至单边倾斜，进而拉动整个密封圈偏向一边移动，使部分接触面之间没有密封圈填充，丧失密封能力。In the prior art, the sealing structure between the rear cover and the end cover of the motor mainly includes a sealing ring. In the specific implementation process, the area used for sealing on the surface of the end cover is also limited, which is very small (the narrowest width is about 1mm ), it is impossible to open a groove to accommodate the sealing ring, and there is a positioning problem for the sealing ring. During the fastening process, the sealing ring is squeezed, locally deformed, and even unilaterally tilted, and then the entire sealing ring is pulled to move sideways, so that part of the contact There is no sealing ring filling between the faces, and the sealing ability is lost.
因此，现有技术方案的主要缺点是：1、使用密封圈，定位困难；2、使用密封圈，安装过程困难，易导致密封失效。Therefore, the main disadvantages of the prior art solutions are: 1. The use of the sealing ring makes positioning difficult; 2. The use of the sealing ring makes the installation process difficult and easily leads to sealing failure.
发明内容Contents of the invention
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请的一个目的在于提出一种电机的密封结构，所述电机的密封结构，定位简单、密封效果好。This application aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present application is to provide a sealing structure for a motor, which has simple positioning and good sealing effect.
根据本申请实施例的电机的密封结构，所述电机包括固定连接的后盖和端盖，所述电机的密封结构包括密封垫；所述密封垫包括密封部和定位部，所述密封部呈环形，所述定位部位于所述密封部的内侧，且所述定位部的厚度大于所述密封部的厚度，所述密封部夹设在所述后盖的端面和所述端盖的端面之间，所述定位部抵接在所述后盖的内壁面上。According to the sealing structure of the motor in the embodiment of the present application, the motor includes a rear cover and an end cover fixedly connected, the sealing structure of the motor includes a gasket; the gasket includes a sealing part and a positioning part, and the sealing part is Ring, the positioning part is located inside the sealing part, and the thickness of the positioning part is greater than the thickness of the sealing part, and the sealing part is sandwiched between the end surface of the back cover and the end surface of the end cover During this period, the positioning portion abuts against the inner wall surface of the rear cover.
根据本申请实施例的密封结构，密封部可以较好地密封装配间隙的同时，又能够使得定位部较好地紧贴在后盖的内壁面上，而在定位部紧贴在后盖的内壁面上的同时，又能够反过来对密封部的位置进行限制，从而使得本申请的密封结构不仅具有较好地密封 能力，还具有较好地定位能力，可以较为稳定地实现后盖和端盖之间的密封。According to the sealing structure of the embodiment of the present application, while the sealing part can better seal the assembly gap, it can also make the positioning part closely adhere to the inner wall surface of the rear cover, and the positioning part closely adhere to the inner wall of the rear cover. At the same time on the wall, the position of the sealing part can be restricted in turn, so that the sealing structure of the present application not only has better sealing ability, but also has better positioning ability, and can realize the rear cover and end cover more stably. seal between.
另外，根据本申请的密封结构，还可以具有如下附加的技术特征：In addition, according to the sealing structure of the present application, it may also have the following additional technical features:
在本申请的一些实施例中，所述后盖的端面和内壁面之间设置有限位槽，至少部分厚度的所述密封部位于所述后盖的内侧，所述密封部和所述限位槽抵接。In some embodiments of the present application, a limiting groove is provided between the end surface and the inner wall of the rear cover, the sealing part with at least part of the thickness is located inside the rear cover, and the sealing part and the limiting Groove abutment.
在本申请的一些实施例中，所述密封部的厚度大于所述限位槽的深度，和/或所述密封部的宽度大于等于所述限位槽的宽度。In some embodiments of the present application, the thickness of the sealing portion is greater than the depth of the limiting groove, and/or the width of the sealing portion is greater than or equal to the width of the limiting groove.
在本申请的一些实施例中，所述密封垫内设置有容置通孔，至少部分所述定位部构成所述容置通孔的内壁面，所述电机内设置有编码器，所述编码器位于所述容置通孔内，所述容置通孔的内壁面的至少一部分和所述编码器抵接。In some embodiments of the present application, an accommodating through hole is provided in the gasket, at least part of the positioning portion constitutes the inner wall of the accommodating through hole, an encoder is provided in the motor, and the encoding The encoder is located in the accommodating through hole, and at least a part of the inner wall of the accommodating through hole abuts against the encoder.
在本申请的一些实施例中，所述容置通孔包括主通孔和副通孔，所述副通孔连接在所述主通孔的外侧，所述编码器设置在所述主通孔内，所述编码器通过限转件固定在所述端盖上，所述限转件设置在所述副通孔内，所述副通孔的内壁面和所述限转件抵接。In some embodiments of the present application, the accommodating through hole includes a main through hole and an auxiliary through hole, the auxiliary through hole is connected to the outside of the main through hole, and the encoder is arranged on the main through hole Inside, the encoder is fixed on the end cover through a rotation limiting member, the rotation limiting member is arranged in the auxiliary through hole, and the inner wall surface of the auxiliary through hole abuts against the rotation limiting member.
在本申请的一些实施例中，所述密封垫还包括安装部，所述安装部位于所述密封部的内侧，所述安装部的厚度和所述密封部的厚度相同，所述安装部上开设有紧固孔，所述紧固孔用于安装紧固件以固定所述后盖和所述端盖。In some embodiments of the present application, the gasket further includes a mounting portion, the mounting portion is located inside the sealing portion, the thickness of the mounting portion is the same as that of the sealing portion, and the mounting portion is A fastening hole is opened, and the fastening hole is used for installing fasteners to fix the rear cover and the end cover.
在本申请的一些实施例中，所述定位部上开设有避让孔，线缆穿设在所述避让孔内，线缆连接在位于所述电机内的定子上的传感器和位于后盖内的主板之间。In some embodiments of the present application, an avoidance hole is opened on the positioning part, and the cable is passed through the avoidance hole, and the cable is connected to the sensor on the stator in the motor and the sensor in the rear cover. between motherboards.
在本申请的一些实施例中，所述密封部的宽度小于等于1mm。In some embodiments of the present application, the width of the sealing part is less than or equal to 1mm.
在本申请的一些实施例中，所述密封垫为丁腈橡胶制成的一体件。In some embodiments of the present application, the sealing gasket is an integral part made of nitrile rubber.
本申请还提出一种具有上述实施例的密封结构的电机。The present application also proposes a motor having the sealing structure of the above embodiment.
根据本申请实施例的电机包括后盖、端盖和密封结构，后盖和端盖固定连接，电机的密封结构设置在后盖和端盖之间。通过本申请的电机的密封结构对电机的后盖和端盖之间的装配间隙进行密封时，密封部可以较好地密封装配间隙的同时，又能够使得定位部较好地紧贴在后盖的内壁面上，而在定位部紧贴在后盖的内壁面上的同时，又能够反过来对密封部的位置进行限制，从而使得本申请的密封结构不仅具有较好地密封能力，还具有较好地定位能力，可以较为稳定地实现后盖和端盖之间的密封。The motor according to the embodiment of the present application includes a back cover, an end cover and a sealing structure, the back cover and the end cover are fixedly connected, and the sealing structure of the motor is arranged between the back cover and the end cover. When the sealing structure of the motor of the present application is used to seal the assembly gap between the rear cover and the end cover of the motor, the sealing part can better seal the assembly gap and at the same time make the positioning part closely adhere to the rear cover On the inner wall surface of the back cover, while the positioning part is closely attached to the inner wall surface of the back cover, it can conversely limit the position of the sealing part, so that the sealing structure of the present application not only has better sealing ability, but also has Better positioning ability can realize the sealing between the rear cover and the end cover more stably.
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
附图说明Description of drawings
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:
图1是根据本申请实施例的电机的结构示意图；Fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present application;
图2是图1中e区域的放大图；Figure 2 is an enlarged view of area e in Figure 1;
图3是根据本申请实施例的电机的密封结构的端盖的端面a的截面图；3 is a cross-sectional view of an end face a of an end cover of a motor sealing structure according to an embodiment of the present application;
图4是根据本申请实施例的电机的密封结构的后盖的端面b的截面图；4 is a cross-sectional view of the end face b of the back cover of the sealing structure of the motor according to the embodiment of the present application;
图5是根据本申请实施例的电机的密封结构的限位槽的底面c的截面图；5 is a cross-sectional view of the bottom surface c of the limiting groove of the sealing structure of the motor according to the embodiment of the present application;
图6是根据本申请实施例的电机的密封结构的密封垫的结构示意图；Fig. 6 is a structural schematic diagram of a gasket of a sealing structure of a motor according to an embodiment of the present application;
图7是根据本申请实施例的电机的密封结构的密封垫的主视图；7 is a front view of a gasket of a sealing structure of a motor according to an embodiment of the present application;
图8是根据本申请实施例的电机的密封结构的密封垫的后视图；8 is a rear view of a gasket of a sealing structure of a motor according to an embodiment of the present application;
图9是根据本申请实施例的电机的密封结构的密封垫的左视图；Fig. 9 is a left view of the gasket of the sealing structure of the motor according to the embodiment of the present application;
图10是根据本申请实施例的电机的密封结构的密封垫的俯视图。Fig. 10 is a top view of the sealing gasket of the sealing structure of the motor according to the embodiment of the present application.
附图标记：Reference signs:
密封结构10、 Sealing structure 10,
密封垫1、密封部11、定位部12、容置通孔120、主通孔121、副通孔122、避让孔123、安装部13、紧固孔131、 Gasket 1, sealing part 11, positioning part 12, accommodating through hole 120, main through hole 121, auxiliary through hole 122, escape hole 123, mounting part 13, fastening hole 131,
电机100、 Motor 100,
后盖20、端盖30、编码器40、限转件50、 Back cover 20, end cover 30, encoder 40, rotation limiting member 50,
端盖的端面a、后盖的端面b、限位槽的底面c、后盖的内壁面d、密封间隙3。The end surface a of the end cover, the end surface b of the back cover, the bottom surface c of the limiting groove, the inner wall surface d of the back cover, and the sealing gap 3 .
具体实施方式Detailed ways
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, are only for explaining the present application, and should not be construed as limiting the present application.
下面参考图1-图10描述根据本申请实施例的电机100的密封结构10。The following describes the sealing structure 10 of the motor 100 according to the embodiment of the present application with reference to FIGS. 1-10 .
如图1所示，电机100包括固定连接的后盖20和端盖30，电机100的后盖20和端盖30可以构成电机100的壳体，在电机100的装配过程中，需要对后盖20和端盖30之间的装配间隙3进行密封。As shown in Figure 1, the motor 100 includes a fixedly connected rear cover 20 and an end cover 30. The rear cover 20 and the end cover 30 of the motor 100 can form the housing of the motor 100. During the assembly process of the motor 100, the rear cover needs to be fixed. The assembly gap 3 between the 20 and the end cover 30 is sealed.
应理解，对于电机的后盖20和端盖30之间的密封结构，相关技术中主要包括两类密封装置，第一种是密封圈，具体实施过程中，因端盖的表面用于密封的面积也受到限制，非常小(最窄宽度在1mm左右)，无法开具容纳密封圈的沟槽，密封圈存在定位问题，在紧固过程中，密封圈受挤压，发生局部变形，甚至单边倾斜，进而拉动整个密封圈偏向一边移动，使部分接触面之间没有密封圈填充，丧失密封能力。另一种是包塑软胶，此方案涉及使用的软胶成本较高，且在电机额定工作，产生的温度下融化，丧失 密封效果。使用既满足成本要求，又满足电机温升要求的材料，非常难匹配，无法推进至量产。It should be understood that for the sealing structure between the rear cover 20 and the end cover 30 of the motor, there are mainly two types of sealing devices in the related art. The first type is a sealing ring. In the specific implementation process, because the surface of the end cover is used for sealing The area is also limited, very small (the narrowest width is about 1mm), and it is impossible to open a groove to accommodate the sealing ring. There is a problem with the positioning of the sealing ring. During the fastening process, the sealing ring is squeezed, local deformation occurs, and even one Tilt, and then pull the entire sealing ring to move sideways, so that there is no sealing ring filling between some contact surfaces, and the sealing ability will be lost. The other is plastic-coated soft rubber. This solution involves the use of soft rubber with high cost, and it melts at the temperature generated by the rated operation of the motor and loses the sealing effect. It is very difficult to match materials that meet both cost requirements and motor temperature rise requirements, and cannot be promoted to mass production.
也就是说，由于构成装配间隙3的后盖20和端盖30的壁厚尺寸较小，不容易在装配间隙3的位置处装配密封圈，即使装配密封圈，密封效果也不好。That is to say, since the back cover 20 and the end cover 30 forming the assembly gap 3 have relatively small wall thicknesses, it is not easy to assemble a seal ring at the position of the assembly gap 3, and even if a seal ring is assembled, the sealing effect is not good.
基于此，本申请提出了一种用于电机100的后盖20和端盖30之间的密封结构10，能够很好地解决后盖20和端盖30之间装配间隙3不容易密封的问题。Based on this, the present application proposes a sealing structure 10 between the rear cover 20 and the end cover 30 of the motor 100, which can well solve the problem that the assembly gap 3 between the rear cover 20 and the end cover 30 is not easy to seal .
如图2和图6所示，根据本申请实施例的电机100的密封结构10包括密封垫1，密封垫1包括密封部11和定位部12，密封部11呈环形，也就是说，密封部11首尾相连构成一个环形密封圈，密封部11设置在装配间隙3内，可以完全封闭装配间隙3，以完成对后盖20和端盖30之间的装配间隙3的密封。As shown in Figure 2 and Figure 6, the sealing structure 10 of the motor 100 according to the embodiment of the present application includes a gasket 1, the gasket 1 includes a sealing part 11 and a positioning part 12, the sealing part 11 is annular, that is to say, the sealing part 11 are connected end to end to form an annular sealing ring. The sealing part 11 is set in the assembly gap 3 and can completely close the assembly gap 3 to complete the sealing of the assembly gap 3 between the rear cover 20 and the end cover 30 .
进一步地，定位部12位于密封部11的内侧，且定位部12的厚度大于密封部11的厚度，密封部11夹设在后盖20的端面b和端盖30的端面a之间，定位部12抵接在后盖20的内壁面d上。也就是说，后盖20的端面b和端盖30的端面a之间构造出上述的装配间隙3，在如图1所示的上下方向上，密封部11的上下两个面可以分别与后盖20的端面b和端盖30的端面a抵接，以封闭后盖20的端面b和端盖30的端面a之间构造出的装配间隙3，由于定位部12位于密封部11的内侧，且定位部12的厚度大于密封部11的厚度。Further, the positioning part 12 is located inside the sealing part 11, and the thickness of the positioning part 12 is greater than the thickness of the sealing part 11, and the sealing part 11 is sandwiched between the end surface b of the rear cover 20 and the end surface a of the end cover 30, and the positioning part 12 abuts against the inner wall surface d of the back cover 20 . That is to say, the above-mentioned assembly gap 3 is constructed between the end surface b of the rear cover 20 and the end surface a of the end cover 30. In the up-down direction as shown in FIG. The end surface b of the cover 20 and the end surface a of the end cover 30 abut to close the assembly gap 3 constructed between the end surface b of the rear cover 20 and the end surface a of the end cover 30. Since the positioning part 12 is located inside the sealing part 11, And the thickness of the positioning portion 12 is greater than the thickness of the sealing portion 11 .
这样，参考附图2所示，定位部12和密封部11可以大致构造成“L”形的结构，密封部11为“L”形的结构的横向边，定位部12为“L”形的结构的竖向边，而在密封部11夹设在后盖20的端面b和端盖30的端面a之间时，能够较好得使得定位部12较好的紧贴在后盖20的内壁面d上，而定位部12紧贴在后盖20的内壁面d上后，又能够反过来对密封部11的位置进行限制，也即限制密封部11在如图2所示的左右方向的相对移动。其中，以环形的密封部11为例，这里的内侧指的是由密封部11的外周朝向密封部11的圆心的方向，厚度可以参考附图1所示的上下方向。Like this, with reference to shown in accompanying drawing 2, positioning portion 12 and sealing portion 11 can be generally constructed into the structure of " L " shape, and sealing portion 11 is the lateral edge of " L " shape structure, and positioning portion 12 is " L " shape The vertical side of the structure, and when the sealing part 11 is sandwiched between the end face b of the back cover 20 and the end face a of the end cover 30, it is better to make the positioning part 12 closely adhere to the inside of the back cover 20. wall d, and after the positioning part 12 is closely attached to the inner wall d of the back cover 20, it can conversely limit the position of the sealing part 11, that is, limit the position of the sealing part 11 in the left and right direction as shown in FIG. relatively mobile. Wherein, taking the ring-shaped sealing portion 11 as an example, the inner side here refers to the direction from the outer periphery of the sealing portion 11 toward the center of the sealing portion 11, and the thickness can refer to the up-down direction shown in FIG. 1 .
由此，当通过本申请的电机100的密封结构10对电机100的后盖20和端盖30之间的装配间隙3进行密封时，密封部11可以较好地密封装配间隙3的同时，又能够使得定位部12较好地紧贴在后盖20的内壁面d上，而在定位部12紧贴在后盖20的内壁面d上的同时，又能够反过来对密封部11的位置进行限制，从而使得本申请的密封结构10不仅具有较好地密封能力，还具有较好地定位能力，可以较为稳定地实现后盖20和端盖30之间的密封。Thus, when the assembly gap 3 between the rear cover 20 and the end cover 30 of the motor 100 is sealed by the sealing structure 10 of the motor 100 of the present application, the sealing part 11 can better seal the assembly gap 3 while simultaneously It is possible to make the positioning part 12 closely adhere to the inner wall surface d of the rear cover 20, and when the positioning part 12 is closely attached to the inner wall surface d of the rear cover 20, the position of the sealing part 11 can be reversed. Therefore, the sealing structure 10 of the present application not only has a better sealing ability, but also has a better positioning ability, so that the sealing between the rear cover 20 and the end cover 30 can be realized more stably.
在本申请的一些实施例中，后盖20的端面b和内壁面之间设置有限位槽(图中未标记)，至少部分厚度的密封部11位于后盖20的内侧，密封部11和限位槽抵接。例如 图2所示，可以认为后盖20的端面b的内侧朝向上方凹陷形成限位槽，或者可以认为内壁面d的下端朝向外侧凹陷形成限位槽，或者可以认为后盖20的端面b的内侧朝向上方凹陷且内壁面d的下端朝向外侧凹陷，两个凹陷结构相互重叠以在后盖20的端面b和内壁面d之间构造出限位槽。In some embodiments of the present application, a limiting groove (not marked in the figure) is provided between the end surface b of the rear cover 20 and the inner wall surface, and the sealing part 11 with at least part of the thickness is located inside the rear cover 20, and the sealing part 11 and the limiting bit slot abutment. For example, as shown in FIG. 2 , it can be considered that the inner side of the end surface b of the rear cover 20 is recessed upwards to form a limiting groove, or it can be considered that the lower end of the inner wall surface d is recessed outwards to form a limiting groove, or it can be considered that the end surface b of the rear cover 20 The inner side is recessed upwards and the lower end of the inner wall d is recessed outwards. The two recessed structures overlap each other to form a limiting groove between the end surface b of the back cover 20 and the inner wall d.
如此，密封部11可以较好地装配在限位槽内，一方面可以提高装配效率，另一方面又可以通过限位槽对密封部11的相对位置进行限位，可以防止在后盖20和端盖30的装配过程中密封部11发生偏移，如此可以保证密封效果，如此，密封部11在装配过程中，不仅通过自身密封结构10中的定位部12进行第一重定位，还通过后盖20上的限位槽进行第二重定位，如此，双重定位可以更好地提高密封部11的稳定性，能够较好地避免后盖20和端盖30的装配过程中密封部11发生偏移。In this way, the sealing part 11 can be better assembled in the limiting groove. On the one hand, the assembly efficiency can be improved. On the other hand, the relative position of the sealing part 11 can be limited by the limiting groove, which can prevent the rear cover 20 and During the assembly process of the end cover 30, the sealing part 11 is shifted, so that the sealing effect can be guaranteed. In this way, during the assembly process, the sealing part 11 not only performs the first repositioning through the positioning part 12 in the self-sealing structure 10, but also passes through the rear position. The limit groove on the cover 20 is repositioned for the second time. In this way, the double positioning can better improve the stability of the sealing part 11, and can better avoid the deviation of the sealing part 11 during the assembly process of the rear cover 20 and the end cover 30. shift.
另外，对于密封部11与限位槽之间的配合，在一个示例中，全部的密封部11完全在限位槽内，这里，限位槽的容积可以大于密封部11的体积，限位槽的容积也可以等于密封部11的体积；在另一个示例中，只有部分的密封部11位于限位槽内，如此，限位槽的容积小于密封部11的体积。这里，仅是为了方便理解，以限位槽和容积和密封部11的体积进行介绍，但并未对限位槽的形状和密封部11的形状进行限制，如此，可以理解的是，限位槽在如图2所示的剖面内的形状可以为矩形，也可以不是矩形，例如锯齿形、正弦波形或者其他的异形结构，因此，这里不做限制，另外，对于密封部11的形状，在如图2所示的剖面内的形状可以为矩形，也可以不是矩形，例如，密封部11的形状为与限位槽的形状大致相同，也可以是不相同，故而，这里也对密封部11的形状不做限制。In addition, for the cooperation between the sealing part 11 and the limiting groove, in one example, all the sealing parts 11 are completely in the limiting groove, here, the volume of the limiting groove can be greater than the volume of the sealing part 11, and the limiting groove The volume of the sealing portion 11 may also be equal to that of the sealing portion 11; in another example, only a part of the sealing portion 11 is located in the limiting groove, so that the volume of the limiting groove is smaller than the volume of the sealing portion 11. Here, for the convenience of understanding, the volume of the limiting groove and the volume and the volume of the sealing part 11 are introduced, but the shape of the limiting groove and the shape of the sealing part 11 are not limited. In this way, it can be understood that the limiting The shape of the groove in the cross-section shown in Figure 2 can be rectangular or not rectangular, such as zigzag, sinusoidal or other special-shaped structures, so there is no limitation here. In addition, for the shape of the sealing part 11, in The shape in the section shown in Figure 2 can be rectangular or not rectangular. For example, the shape of the sealing portion 11 is substantially the same as the shape of the limiting groove, or it can be different. Therefore, the sealing portion 11 is also used here. The shape of is not limited.
这里参考附图2描述一个具体实施例中的限位槽和密封部11的形状以及配合关系。Herein, referring to FIG. 2 , the shape and matching relationship between the limiting groove and the sealing part 11 in a specific embodiment will be described.
如图2所示，后盖20的端面b的内侧朝向上方凹陷，内壁面下端的朝向外侧凹陷，如此，两个凹陷结构相互重叠以在后盖20的端面b和内壁面之间构造出限位槽，限位槽在如图2所示的剖面内的形状为矩形，密封部11的形状为与限位槽的形状大致相同，在如图2所示的剖面内的形状也为矩形，并且，限位槽的容积小于密封部11的体积，也即只有部分的密封部11位于限位槽内，当电机100的后盖20和端盖30配合时，密封部11位于限位槽和端盖30的端面a之间，以稳定地对后盖20和端盖30之间的装配间隙3进行密封。As shown in FIG. 2 , the inner side of the end face b of the rear cover 20 is sunken upwards, and the lower end of the inner wall is sunken outward. In this way, the two concave structures overlap each other to form a limit between the end face b of the rear cover 20 and the inner wall. Position groove, the shape of the limit groove in the cross section as shown in Figure 2 is rectangular, the shape of the sealing part 11 is approximately the same as the shape of the limit groove, and the shape in the cross section as shown in Figure 2 is also rectangular, Moreover, the volume of the limiting groove is smaller than the volume of the sealing portion 11, that is, only part of the sealing portion 11 is located in the limiting groove, and when the rear cover 20 of the motor 100 is matched with the end cover 30, the sealing portion 11 is located between the limiting groove and the end cover 30. between the end faces a of the end cover 30 to stably seal the assembly gap 3 between the rear cover 20 and the end cover 30 .
进一步地，在如图2所示的示例中，密封部11的厚度大于限位槽的深度。这里的厚度和深度均可以参考如图2所示的上下方向，如此，当使得密封部11的厚度大于限位槽的深度时，可以使得后盖20和端盖30配合时，密封部11可以将后盖20和端盖30间隔开，这样，在后盖20和端盖30进行紧固装配时，部分的密封部11还能够被挤压 进入到后盖20的端面b和端盖30的端面a之间，以加强密封效果，而且，部分的密封部11被夹紧在后盖20的端面b和端盖30的端面a之间，还能够进一步提高密封部11密封的可靠性，也即，后盖20和端盖30在装配完成后不容易发生偏移，如此，密封部11能够稳定地保持在装配间隙3内行使密封功能。Further, in the example shown in FIG. 2 , the thickness of the sealing portion 11 is greater than the depth of the limiting groove. The thickness and depth here can refer to the up-and-down direction as shown in Figure 2. In this way, when the thickness of the sealing part 11 is greater than the depth of the limiting groove, when the rear cover 20 and the end cover 30 can be matched, the sealing part 11 can be The back cover 20 and the end cover 30 are spaced apart, like this, when the back cover 20 and the end cover 30 are fastened and assembled, part of the sealing portion 11 can also be squeezed into the end surface b of the back cover 20 and the end cover 30 between the end faces a to enhance the sealing effect, and part of the sealing part 11 is clamped between the end face b of the back cover 20 and the end face a of the end cover 30, which can further improve the sealing reliability of the sealing part 11, and also That is, the rear cover 20 and the end cover 30 are not easy to shift after assembly, so that the sealing part 11 can be stably maintained in the assembly gap 3 to perform the sealing function.
更进一步地，密封部11的宽度大于等于限位槽的宽度，由此，当密封部11安装在限位槽内后，当密封部11受到后盖20和端盖30的挤压时，位于限位槽外的密封部11能够发生一定程度的变形，如上示例中，位于限位槽下端的部分密封部11能够挤压到后盖20的端面b和端盖30的端面a之间，以加强密封，如此，在宽度方向上位于限位槽外的部分密封部11，在发生一定程度的变形后，也能够实现提高密封的效果，如此，使得后盖20和端盖30之间的装配间隙3以被包裹的形式密封，可靠性高，密封性好。Furthermore, the width of the sealing part 11 is greater than or equal to the width of the limiting groove, thus, when the sealing part 11 is installed in the limiting groove, when the sealing part 11 is pressed by the rear cover 20 and the end cover 30, it will be located The sealing part 11 outside the limiting groove can be deformed to a certain extent. As in the above example, part of the sealing part 11 located at the lower end of the limiting groove can be squeezed between the end surface b of the rear cover 20 and the end surface a of the end cover 30, so as to Strengthen the sealing, so that the part of the sealing part 11 located outside the limiting groove in the width direction can also achieve the effect of improving the sealing after a certain degree of deformation, so that the assembly between the rear cover 20 and the end cover 30 The gap 3 is sealed in a wrapped form, which has high reliability and good sealing performance.
在本申请的一些实施例中，如图1和图6所示，密封垫1内设置有容置通孔120，至少部分定位部12构成容置通孔120的内壁面，电机100内设置有编码器40，编码器40位于容置通孔120内，容置通孔120的内壁面的至少一部分和编码器40抵接。也就是说，密封垫1环绕在编码器40的外侧，然后通过在定位部12内构造出用于容纳编码器40的容置通孔120，可以利用定位部12的定位能力，实现定位部12与编码器40之间的配合，也即利用编码器40实现密封垫1的定位。In some embodiments of the present application, as shown in FIG. 1 and FIG. 6 , an accommodating through hole 120 is provided in the gasket 1, at least part of the positioning portion 12 constitutes the inner wall surface of the accommodating through hole 120, and the motor 100 is provided with The encoder 40 is located in the receiving through hole 120 , and at least a part of the inner wall of the receiving through hole 120 abuts against the encoder 40 . That is to say, the sealing gasket 1 surrounds the outer side of the encoder 40, and then by constructing the accommodating through hole 120 for accommodating the encoder 40 in the positioning portion 12, the positioning capability of the positioning portion 12 can be utilized to realize the positioning portion 12. Cooperate with the encoder 40 , that is, use the encoder 40 to realize the positioning of the gasket 1 .
具体地，可以使得至少一部分的容置通孔120的内壁面与编码器40抵接，这里，在一个示例中，可以在容置通孔120的内壁面内设置定位凸起，如此，定位凸起可以与编码器40抵接，由此，在如图1所示的左右方向上，定位部12的外侧与后盖20的内壁面d抵接，定位部12的内侧通过定位凸起与编码器40抵接，如此，定位部12相当于被夹设在后盖20的内壁面d和编码器40之间，从而使得密封垫1在通过定位部12定位后位置较为稳定。Specifically, at least a part of the inner wall surface of the accommodating through hole 120 can be made to abut against the encoder 40. Here, in an example, a positioning protrusion can be provided in the inner wall surface of the accommodating through hole 120, so that the positioning protrusion can abut against the encoder 40, thus, in the left-right direction as shown in FIG. In this way, the positioning part 12 is equivalent to being sandwiched between the inner wall surface d of the back cover 20 and the encoder 40, so that the position of the gasket 1 is relatively stable after being positioned by the positioning part 12.
当然，可以理解的是，也可以在容置通孔120的内壁面构造出其他的结构，例如弹性片等，这里不做限制；在另一个示例中，容置通孔120的内壁面完全与编码器40抵接，由此，编码器40不仅能够较好地对密封垫1进行定位，密封垫1也可以反过来对编码器40进行定位，如此，在编码器40或者密封垫1进行装配时，可以提高装配效率，如此，当需要对密封垫1进行定位时，也可以仅通过定位部12与编码器40的相互定位，实现密封垫1的定位，结构简单，密封、定位效果好。Of course, it can be understood that other structures can also be constructed on the inner wall of the accommodating through hole 120, such as elastic sheets, etc., which are not limited here; in another example, the inner wall of the accommodating through hole 120 is completely connected The encoder 40 abuts, so that the encoder 40 can not only better position the gasket 1, but the gasket 1 can also position the encoder 40 in reverse, so that the encoder 40 or the gasket 1 can be assembled When the assembly efficiency can be improved, in this way, when the gasket 1 needs to be positioned, the location of the gasket 1 can also be realized only through the mutual positioning of the positioning part 12 and the encoder 40, the structure is simple, and the sealing and positioning effects are good.
在本申请的一些实施例中，容置通孔120包括主通孔121和副通孔122，副通孔122连接在主通孔121的外侧，编码器40设置在主通孔121内，编码器40通过限转件50固定在端盖30上，限转件50设置在副通孔122内，副通孔122的内壁面和限转件50抵接。这里，需要说明的是，限转件50固定在端盖30上，以限制编码器40的转动， 而本申请中，通过容置通孔120同时与编码器40和限转件50配合，可以实现定位部12的三重定位，也即，定位部12与后盖20的内壁面d的定位、定位部12与编码器40的定位、定位部12与限转件50的定位，如此，定位效果好。In some embodiments of the present application, the accommodating through hole 120 includes a main through hole 121 and an auxiliary through hole 122, the auxiliary through hole 122 is connected to the outside of the main through hole 121, the encoder 40 is arranged in the main through hole 121, and the encoding The device 40 is fixed on the end cover 30 through the rotation limiting member 50 , the rotation limiting member 50 is arranged in the auxiliary through hole 122 , and the inner wall surface of the auxiliary through hole 122 abuts against the rotation limiting member 50 . Here, it should be noted that the rotation limiting member 50 is fixed on the end cover 30 to limit the rotation of the encoder 40, but in this application, by cooperating with the encoder 40 and the rotation limiting member 50 through the accommodating through hole 120 at the same time, it can The triple positioning of the positioning part 12 is realized, that is, the positioning of the positioning part 12 and the inner wall surface d of the rear cover 20, the positioning of the positioning part 12 and the encoder 40, and the positioning of the positioning part 12 and the rotation limiting member 50, so that the positioning effect good.
在如图3所示的限转件50的剖视图中，限转件50大体为三角形，结合图6所示，副通孔122的内壁面可以与限转件50的两个边抵接，以进行定位，如此，不仅能够实现定位部12在左右方向的定位，还能够实现定位部12在周向方向的定位，可以防止密封垫1在周向方向发生偏移而影响密封效果。In the cross-sectional view of the rotation limiting member 50 shown in FIG. 3 , the rotation limiting member 50 is generally triangular in shape. As shown in FIG. Positioning, in this way, not only the positioning of the positioning part 12 in the left and right direction can be realized, but also the positioning of the positioning part 12 in the circumferential direction can be realized, which can prevent the gasket 1 from shifting in the circumferential direction and affect the sealing effect.
在本申请的一些实施例中，密封垫1还包括安装部13，安装部13位于密封部11的内侧，安装部13上开设有紧固孔131，紧固孔131用于安装紧固件以固定后盖20和端盖30。也就是说，在后盖20和端盖30之间通过紧固件进行紧固时，紧固件还可以穿过密封垫1上的紧固孔131，如此，通过紧固孔131与紧固件的配合，又能够进一步实现对密封垫1的定位，其中，紧固件和紧固孔131可以均设置有多个，多个紧固件和多个紧固孔131可以一一对应设置，通过多个紧固件和多个紧固孔131之间的配合，可以进一步提高密封垫1的定位效果。In some embodiments of the present application, the gasket 1 further includes a mounting portion 13, the mounting portion 13 is located inside the sealing portion 11, and a fastening hole 131 is opened on the mounting portion 13, and the fastening hole 131 is used to install a fastener to The rear cover 20 and the end cover 30 are fixed. That is to say, when the fasteners are used to fasten between the rear cover 20 and the end cover 30, the fasteners can also pass through the fastening holes 131 on the gasket 1, so that the fastening holes 131 and the fastening The cooperation of the parts can further realize the positioning of the gasket 1, wherein the fasteners and the fastening holes 131 can each be provided with multiples, and the multiple fasteners and the multiple fastening holes 131 can be arranged in one-to-one correspondence, Through the cooperation between multiple fasteners and multiple fastening holes 131, the positioning effect of the gasket 1 can be further improved.
在一个示例中，安装部13的厚度和密封部11的厚度相同，如此可以降低密封件的加工难度，当然，可以理解的是，安装部13的厚度也可以与密封部11的厚度不相同，例如，安装部13的厚度大于密封部11的厚度。In one example, the thickness of the installation part 13 is the same as the thickness of the sealing part 11, which can reduce the processing difficulty of the seal. Of course, it can be understood that the thickness of the installation part 13 can also be different from the thickness of the sealing part 11. For example, the thickness of the mounting portion 13 is greater than that of the sealing portion 11 .
在本申请的一些实施例中，如图6所示，定位部12上开设有避让孔123，线缆穿设在避让孔123内，线缆连接在位于电机100内的定子上的传感器和位于后盖20内的主板之间。由此，通过设置避让孔123，不仅方便线缆的装配，还可以较好地实现对线缆的定位，另外，在对线缆进行定位后，避让孔123还能够较好地实现对线缆的收束作用，从而防止线束散乱而与电机100内的其他结构发生干涉。可选地，避让孔123可以设置一个，也可以设置两个或者两个以上，这里可以根据线缆的布局需求进行设置，这里不做限制。本申请的定位部12上开设有一个避让孔123。In some embodiments of the present application, as shown in FIG. 6 , an avoidance hole 123 is opened on the positioning part 12, and the cable is passed through the avoidance hole 123, and the cable is connected to the sensor on the stator in the motor 100 and the between the motherboards in the back cover 20 . Therefore, by setting the avoidance hole 123, not only the assembly of the cable is facilitated, but also the positioning of the cable can be better realized. In addition, after the cable is positioned, the avoidance hole 123 can also better realize the positioning of the cable. Converging effect, so as to prevent the wire harness from being scattered and interfering with other structures in the motor 100 . Optionally, one avoidance hole 123 may be provided, or two or more than two avoidance holes may be provided, which may be provided according to the layout requirements of cables, and there is no limitation here. An escape hole 123 is opened on the positioning portion 12 of the present application.
在本申请的一些实施例中，密封部11的宽度小于等于1mm，这里的宽度方向为如图2所示的左右方向，可以理解的是，本申请的密封部11宽度较小，因此，适合对较为窄小的装配间隙3进行密封，例如本申请的电机100的后盖20和端盖30之间，当然，本申请的密封结构10也同样使用于其他的壁厚较薄的结构之间的装配间隙3，也即，通过密封垫1上设置的多种密封形式，与待密封装置内的其他零部件相互配合进行定位，定位效果和密封效果均较好，且稳定性和可靠性较高。In some embodiments of the present application, the width of the sealing portion 11 is less than or equal to 1mm, and the width direction here is the left-right direction as shown in FIG. Seal the relatively narrow assembly gap 3, such as between the rear cover 20 and the end cover 30 of the motor 100 of the present application. Of course, the sealing structure 10 of the present application is also used between other structures with thinner walls The assembly gap 3, that is, through the various sealing forms set on the gasket 1, cooperate with other parts in the device to be sealed for positioning, the positioning effect and sealing effect are good, and the stability and reliability are relatively high. high.
在本申请的一些实施例中，密封垫1为丁腈橡胶制成的一体件。用较容易获得的原材料丁腈橡胶-成本较低加工制成密封垫1，接触面积足够大，在压紧过程中不易发生倾 斜变形导致密封失效的变形，方便产线员工的安装操作降低安装难度定位面较多，提高生产效率。解决了密封圈结构密封方案中的定位困难和安装困难，易导致密封失效的问题，克服了现有技术提供的包塑软胶结构的密封方案的成本高问题，丁腈橡胶，此材料虽然不能满足包塑工艺，但是耐温能够达到150℃以上，解决了软胶易融化，不能量产的问题。In some embodiments of the present application, the gasket 1 is an integral part made of nitrile rubber. The gasket 1 is made of nitrile rubber, a relatively low-cost raw material that is relatively easy to obtain. The contact area is large enough, and it is not easy to be tilted and deformed during the pressing process, which will cause the deformation of the seal to fail. There are more positioning surfaces to improve production efficiency. It solves the problem of difficult positioning and installation in the sealing scheme of the sealing ring structure, which easily leads to the failure of the seal, and overcomes the high cost of the sealing scheme of the plastic-coated soft rubber structure provided by the prior art. Although nitrile rubber, this material cannot It meets the plastic packaging process, but the temperature resistance can reach above 150 ° C, which solves the problem that the soft rubber is easy to melt and cannot be mass-produced.
相对于相关技术中的密封圈结构密封方案，本申请提供的密封结构，密封垫1容易定位，安装容易，且能够达到较好的密封效果；相对于相关技术中的包塑软胶结构密封方案，本申请提供的密封结构，选用丁腈橡胶，成本较低，耐温满足要求，不会再电机100正常工作状态下融化，可以推进至量产阶段。尤其适用于小型伺服电机100，但是安装较大结构尺寸的编码器40，具有良好的密封效果，改善生产制造工艺。Compared with the sealing ring structure sealing scheme in the related art, the sealing structure provided by the application, the sealing gasket 1 is easy to locate, easy to install, and can achieve better sealing effect; compared with the sealing scheme of the plastic-coated soft rubber structure in the related art , the sealing structure provided by this application is made of nitrile rubber, which has low cost and meets the temperature resistance requirements, and will not melt under the normal working state of the motor 100, and can be promoted to the mass production stage. It is especially suitable for small servo motors 100, but the encoder 40 with a larger structural size has a good sealing effect and improves the manufacturing process.
下面参考附图描述本申请一个具体实施例的密封结构10。A sealing structure 10 according to a specific embodiment of the present application will be described below with reference to the accompanying drawings.
密封结构10包括密封垫1，密封垫1包括密封部11和定位部12，密封部11呈环形，定位部12位于密封部11的内侧，且定位部12的厚度大于密封部11的厚度，密封部11夹设在后盖20的端面b和端盖30的端面a之间，定位部12抵接在后盖20的内壁面d上，在如图1所示的上下方向上，密封部11的上下两个面可以分别与后盖20的端面b和端盖30的端面a抵接，以封闭后盖20的端面b和端盖30的端面a之间构造出的装配间隙3，由于定位部12位于密封部11的内侧，且定位部12的厚度大于密封部11的厚度，这样，参考附图2所示，定位部12和密封部11可以大致构造成“L”形的结构，密封部11为“L”形的结构的横向边，定位部12为“L”形的结构的竖向边，而在密封部11夹设在后盖20的端面b和端盖30的端面a之间时，能够较好得使得定位部12较好的紧贴在后盖20的内壁面d上，而定位部12紧贴在后盖20的内壁面d上后，又能够反过来对密封部11的位置进行限制，也即限制密封部11在如图2所示的左右方向的相对移动。The sealing structure 10 includes a gasket 1, the gasket 1 includes a sealing portion 11 and a positioning portion 12, the sealing portion 11 is annular, the positioning portion 12 is located inside the sealing portion 11, and the thickness of the positioning portion 12 is greater than the thickness of the sealing portion 11. The part 11 is sandwiched between the end surface b of the rear cover 20 and the end surface a of the end cover 30, and the positioning part 12 abuts on the inner wall surface d of the rear cover 20. In the vertical direction shown in FIG. 1, the sealing part 11 The upper and lower surfaces of the back cover 20 and the end face a of the end cover 30 can respectively abut against the end face b of the back cover 20 and the end face a of the end cover 30 to close the assembly gap 3 constructed between the end face b of the back cover 20 and the end face a of the end cover 30. Part 12 is positioned at the inner side of sealing part 11, and the thickness of positioning part 12 is greater than the thickness of sealing part 11, like this, with reference to accompanying drawing 2 shown, positioning part 12 and sealing part 11 can be roughly constructed into the structure of " L " shape, sealing The part 11 is the lateral side of the "L"-shaped structure, the positioning part 12 is the vertical side of the "L"-shaped structure, and the sealing part 11 is sandwiched between the end surface b of the rear cover 20 and the end surface a of the end cover 30 time, it is better to make the positioning part 12 close to the inner wall surface d of the back cover 20, and after the positioning part 12 is close to the inner wall surface d of the back cover 20, the sealing part can be reversed. 11, that is, to limit the relative movement of the sealing portion 11 in the left-right direction as shown in FIG. 2 .
如图2所示，后盖20的端面b的内侧朝向上方凹陷，内壁面下端的朝向外侧凹陷，如此，两个凹陷结构相互重叠以在后盖20的端面b和内壁面之间构造出限位槽，限位槽在如图2所示的剖面内的形状为矩形，密封部11的形状为与限位槽的形状大致相同，在如图2所示的剖面内的形状也为矩形，并且，限位槽的容积小于密封部11的体积，也即只有部分的密封部11位于限位槽内，当电机100的后盖20和端盖30配合时，密封部11位于限位槽和端盖30的端面a之间，以稳定地对后盖20和端盖30之间的装配间隙3进行密封。进一步地，密封部11的厚度大于限位槽的深度，密封部11的宽度大于等于限位槽的宽度，如此，在宽度方向和厚度方向上位于限位槽外的部分密封部11，在发生一定程度的变形后，也能够实现提高密封的效果，如此，使得后盖20和端盖30 之间的装配间隙3以被包裹的形式密封，可靠性高，密封性好。As shown in FIG. 2 , the inner side of the end face b of the rear cover 20 is sunken upwards, and the lower end of the inner wall is sunken outward. In this way, the two concave structures overlap each other to form a limit between the end face b of the rear cover 20 and the inner wall. Position groove, the shape of the limit groove in the cross section as shown in Figure 2 is rectangular, the shape of the sealing part 11 is approximately the same as the shape of the limit groove, and the shape in the cross section as shown in Figure 2 is also rectangular, Moreover, the volume of the limiting groove is smaller than the volume of the sealing portion 11, that is, only part of the sealing portion 11 is located in the limiting groove, and when the rear cover 20 of the motor 100 is matched with the end cover 30, the sealing portion 11 is located between the limiting groove and the end cover 30. between the end faces a of the end cover 30 to stably seal the assembly gap 3 between the rear cover 20 and the end cover 30 . Further, the thickness of the sealing part 11 is greater than the depth of the limiting groove, and the width of the sealing part 11 is greater than or equal to the width of the limiting groove. In this way, the part of the sealing part 11 located outside the limiting groove in the width direction and the thickness direction, After a certain degree of deformation, the effect of improving the sealing can also be achieved. In this way, the assembly gap 3 between the rear cover 20 and the end cover 30 is sealed in a wrapped form, which has high reliability and good sealing performance.
如图1和图6所示，密封垫1内设置有容置通孔120，至少部分定位部12构成容置通孔120的内壁面，电机100内设置有编码器40，编码器40位于容置通孔120内，容置通孔120的内壁面的至少一部分和编码器40抵接，如此，定位部12相当于被夹设在后盖20的内壁面d和编码器40之间，从而使得密封垫1在通过定位部12定位后位置较为稳定。进一步地，容置通孔120包括主通孔121和副通孔122，副通孔122连接在主通孔121的外侧，编码器40设置在主通孔121内，编码器40通过限转件50固定在端盖30上，限转件50设置在副通孔122内，副通孔122的内壁面和限转件50抵接。限转件50大体为三角形，结合图6所示，副通孔122的内壁面可以与限转件50的两个边抵接，以进行定位，如此，不仅能够实现定位部12在左右方向的定位，还能够实现定位部12在周向方向的定位，可以防止密封垫1在周向方向发生偏移而影响密封效果。As shown in Figures 1 and 6, a housing through hole 120 is provided in the gasket 1, at least part of the positioning portion 12 constitutes the inner wall surface of the housing through hole 120, an encoder 40 is provided in the motor 100, and the encoder 40 is located in the inner wall of the motor 100. Placed in the through hole 120, at least a part of the inner wall surface of the accommodating through hole 120 abuts against the encoder 40, so that the positioning part 12 is equivalent to being sandwiched between the inner wall surface d of the back cover 20 and the encoder 40, so that This makes the position of the gasket 1 relatively stable after being positioned by the positioning portion 12 . Further, the accommodating through hole 120 includes a main through hole 121 and an auxiliary through hole 122, the auxiliary through hole 122 is connected to the outside of the main through hole 121, the encoder 40 is arranged in the main through hole 121, and the encoder 40 passes through the rotation limiting member 50 is fixed on the end cover 30 , the rotation limiting member 50 is disposed in the auxiliary through hole 122 , and the inner wall surface of the auxiliary through hole 122 abuts against the rotation limiting member 50 . The rotation limiting member 50 is generally triangular. As shown in FIG. 6 , the inner wall surface of the auxiliary through hole 122 can abut against the two sides of the rotation limiting member 50 for positioning. The positioning can also realize the positioning of the positioning portion 12 in the circumferential direction, which can prevent the gasket 1 from shifting in the circumferential direction and affect the sealing effect.
密封垫1还包括安装部13，安装部13位于密封部11的内侧，安装部13上开设有紧固孔131，紧固孔131用于安装紧固件以固定后盖20和端盖30。紧固件和紧固孔131可以均设置有多个，多个紧固件和多个紧固孔131可以一一对应设置，通过多个紧固件和多个紧固孔131之间的配合，可以进一步提高密封垫1的定位效果。The gasket 1 also includes a mounting portion 13 located inside the sealing portion 11 , and a fastening hole 131 is opened on the mounting portion 13 , and the fastening hole 131 is used for installing fasteners to fix the rear cover 20 and the end cover 30 . Fasteners and fastening holes 131 can each be provided with a plurality, and multiple fasteners and multiple fastening holes 131 can be provided in one-to-one correspondence, through the cooperation between multiple fasteners and multiple fastening holes 131 , the positioning effect of the gasket 1 can be further improved.
如图6所示，定位部12上开设有避让孔123，线缆穿设在避让孔123内，线缆连接在位于电机100内的定子上的传感器和位于后盖20内的主板之间。在对线缆进行定位后，避让孔123还能够较好地实现对线缆的收束作用，从而防止线束散乱而与电机100内的其他结构发生干涉。As shown in FIG. 6 , an avoidance hole 123 is opened on the positioning part 12 , and the cable passes through the avoidance hole 123 , and the cable is connected between the sensor on the stator in the motor 100 and the main board in the back cover 20 . After the cables are positioned, the avoidance hole 123 can better realize the binding effect on the cables, thereby preventing the cables from being scattered and interfering with other structures in the motor 100 .
本申请还提出一种具有上述实施例的密封结构10的电机100。The present application also proposes a motor 100 having the sealing structure 10 of the above-mentioned embodiment.
如图1和图2所示，根据本申请实施例的电机100包括后盖20、端盖30和密封结构10，后盖20和端盖30固定连接，电机100的密封结构10设置在后盖20和端盖30之间。通过本申请的电机100的密封结构10对电机100的后盖20和端盖30之间的装配间隙3进行密封时，密封部11可以较好地密封装配间隙3的同时，又能够使得定位部12较好地紧贴在后盖20的内壁面d上，而在定位部12紧贴在后盖20的内壁面d上的同时，又能够反过来对密封部11的位置进行限制，从而使得本申请的密封结构10不仅具有较好地密封能力，还具有较好地定位能力，可以较为稳定地实现后盖20和端盖30之间的密封。As shown in Figures 1 and 2, the motor 100 according to the embodiment of the present application includes a back cover 20, an end cover 30 and a sealing structure 10, the back cover 20 and the end cover 30 are fixedly connected, and the sealing structure 10 of the motor 100 is arranged on the back cover 20 and end cap 30. When the assembly gap 3 between the rear cover 20 and the end cover 30 of the motor 100 is sealed by the sealing structure 10 of the motor 100 of the present application, the sealing part 11 can better seal the assembly gap 3 and at the same time make the positioning part 12 is preferably in close contact with the inner wall surface d of the back cover 20, and while the positioning part 12 is in close contact with the inner wall surface d of the back cover 20, it can conversely limit the position of the sealing part 11, so that The sealing structure 10 of the present application not only has good sealing ability, but also has good positioning ability, and can realize the sealing between the rear cover 20 and the end cover 30 more stably.
根据本申请实施例的电机100的其他构成以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。Other configurations and operations of the motor 100 according to the embodiment of the present application are known to those skilled in the art and will not be described in detail here.
在本说明书的描述中，参考术语“一些实施例”、“可选地”、“进一步地”或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含 于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, descriptions with reference to the terms "some embodiments", "optionally", "further" or "some examples" mean that specific features, structures, materials or Features are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变形。Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of the present application.

Claims (10)

  1. 一种电机的密封结构，所述电机包括固定连接的后盖和端盖，其特征在于，所述电机的密封结构包括密封垫；A sealing structure of a motor, the motor includes a fixedly connected back cover and an end cover, characterized in that the sealing structure of the motor includes a gasket;
    所述密封垫包括密封部和定位部，所述密封部呈环形，所述定位部位于所述密封部的内侧，且所述定位部的厚度大于所述密封部的厚度，所述密封部夹设在所述后盖的端面和所述端盖的端面之间，所述定位部抵接在所述后盖的内壁面上。The gasket includes a sealing portion and a positioning portion, the sealing portion is ring-shaped, the positioning portion is located inside the sealing portion, and the thickness of the positioning portion is greater than the thickness of the sealing portion, and the sealing portion clamps The positioning part is arranged between the end surface of the rear cover and the end surface of the end cover, and the positioning part abuts against the inner wall surface of the rear cover.
  2. 根据权利要求1所述的电机的密封结构，其特征在于，所述后盖的端面和内壁面之间设置有限位槽，至少部分厚度的所述密封部位于所述后盖的内侧，所述密封部和所述限位槽抵接。The sealing structure of the motor according to claim 1, wherein a limiting groove is provided between the end surface and the inner wall surface of the rear cover, and the sealing part having at least part of the thickness is located on the inner side of the rear cover, and the The sealing part abuts against the limiting groove.
  3. 根据权利要求2所述的电机的密封结构，其特征在于，所述密封部的厚度大于所述限位槽的深度，和/或所述密封部的宽度大于等于所述限位槽的宽度。The sealing structure of the motor according to claim 2, wherein the thickness of the sealing part is greater than the depth of the limiting groove, and/or the width of the sealing part is greater than or equal to the width of the limiting groove.
  4. 根据权利要求1所述的电机的密封结构，其特征在于，所述密封垫内设置有容置通孔，至少部分所述定位部构成所述容置通孔的内壁面，所述电机内设置有编码器，所述编码器位于所述容置通孔内，所述容置通孔的内壁面的至少一部分和所述编码器抵接。The sealing structure of the motor according to claim 1, wherein a receiving through hole is provided in the sealing pad, at least part of the positioning part constitutes the inner wall surface of the receiving through hole, and a receiving through hole is provided in the motor. There is an encoder, the encoder is located in the accommodating through hole, at least a part of the inner wall of the accommodating through hole is in contact with the encoder.
  5. 根据权利要求4所述的电机的密封结构，其特征在于，所述容置通孔包括主通孔和副通孔，所述副通孔连接在所述主通孔的外侧，所述编码器设置在所述主通孔内，所述编码器通过限转件固定在所述端盖上，所述限转件设置在所述副通孔内，所述副通孔的内壁面和所述限转件抵接。The sealing structure of the motor according to claim 4, wherein the accommodating through hole includes a main through hole and an auxiliary through hole, the auxiliary through hole is connected to the outside of the main through hole, and the encoder It is arranged in the main through hole, the encoder is fixed on the end cover through a rotation limiting member, and the rotation limiting member is arranged in the auxiliary through hole, the inner wall surface of the auxiliary through hole and the Limit rotation abutment.
  6. 根据权利要求1所述的电机的密封结构，其特征在于，所述密封垫还包括安装部，所述安装部位于所述密封部的内侧，所述安装部的厚度和所述密封部的厚度相同，所述安装部上开设有紧固孔，所述紧固孔用于安装紧固件以固定所述后盖和所述端盖。The sealing structure of the motor according to claim 1, characterized in that, the gasket further includes a mounting portion, the mounting portion is located inside the sealing portion, and the thickness of the mounting portion and the thickness of the sealing portion Similarly, fastening holes are opened on the installation part, and the fastening holes are used for installing fasteners to fix the rear cover and the end cover.
  7. 根据权利要求6所述的电机的密封结构，其特征在于，所述定位部上开设有避让孔，线缆穿设在所述避让孔内，线缆连接在位于所述电机内的定子上的传感器和位于后盖内的主板之间。The sealing structure of the motor according to claim 6, wherein an avoidance hole is opened on the positioning part, the cable is passed through the avoidance hole, and the cable is connected to the stator on the motor. Between the sensor and the motherboard located inside the back cover.
  8. 根据权利要求1-7任一项所述的电机的密封结构，其特征在于，所述密封部的宽度小于等于1mm。The sealing structure of a motor according to any one of claims 1-7, characterized in that the width of the sealing part is less than or equal to 1mm.
  9. 根据权利要求1-8任一项所述的电机的密封结构，其特征在于，所述密封垫为丁腈橡胶制成的一体件。The sealing structure of a motor according to any one of claims 1-8, characterized in that, the sealing gasket is an integral part made of nitrile rubber.
  10. 一种电机，其特征在于，包括后盖、端盖和权利要求1-9任一项所述的电机的密封结构，所述后盖和所述端盖固定连接，所述电机的密封结构设置在所述后盖和所述端盖之间。A motor, characterized in that it comprises a back cover, an end cover and the sealing structure of the motor according to any one of claims 1-9, the back cover and the end cover are fixedly connected, and the sealing structure of the motor is set between the back cover and the end cover.
PCT/CN2022/082844 2022-02-15 2022-03-24 Housing for electrical machine WO2023155270A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202220309693.2 2022-02-15
CN202220309693.2U CN217282462U (en) 2022-02-15 2022-02-15 Sealing structure of motor and motor

Publications (1)

Publication Number Publication Date
WO2023155270A1 true WO2023155270A1 (en) 2023-08-24

Family

ID=82854413

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/082844 WO2023155270A1 (en) 2022-02-15 2022-03-24 Housing for electrical machine

Country Status (2)

Country Link
CN (1) CN217282462U (en)
WO (1) WO2023155270A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204408068U (en) * 2015-03-09 2015-06-17 瑞安市高鹏汽车电器有限公司 The rear end cap of motor and the hermetically-sealed construction of shell
CN205693489U (en) * 2016-06-28 2016-11-16 李芳� It is easy to the permagnetic synchronous motor of heat radiation
KR101816889B1 (en) * 2016-08-11 2018-01-09 디와이오토 주식회사 Power window motor apparatus for vehicle
CN109687630A (en) * 2018-12-07 2019-04-26 中车永济电机有限公司 A kind of locomotive permanent-magnet synchronizing traction motor rotor seal structure
WO2020090278A1 (en) * 2018-10-31 2020-05-07 日本精工株式会社 Spindle device with built-in motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204408068U (en) * 2015-03-09 2015-06-17 瑞安市高鹏汽车电器有限公司 The rear end cap of motor and the hermetically-sealed construction of shell
CN205693489U (en) * 2016-06-28 2016-11-16 李芳� It is easy to the permagnetic synchronous motor of heat radiation
KR101816889B1 (en) * 2016-08-11 2018-01-09 디와이오토 주식회사 Power window motor apparatus for vehicle
WO2020090278A1 (en) * 2018-10-31 2020-05-07 日本精工株式会社 Spindle device with built-in motor
CN109687630A (en) * 2018-12-07 2019-04-26 中车永济电机有限公司 A kind of locomotive permanent-magnet synchronizing traction motor rotor seal structure

Also Published As

Publication number Publication date
CN217282462U (en) 2022-08-23

Similar Documents

Publication Publication Date Title
EP3061999B1 (en) Hole plug
JP2001266997A (en) Assembling structure of case and connector
JPH08204356A (en) Waterproof structure for electronic apparatus housing
JP5528778B2 (en) Seal structure
JP2017017119A (en) Electronic control unit
JP2004076877A (en) Gasket
US11408509B2 (en) Sealing plug
WO2023155270A1 (en) Housing for electrical machine
JP5758645B2 (en) Grommet
JP5480641B2 (en) Connector seal structure
WO2020129338A1 (en) Connection terminal with seal mechanism, and electrical device
JP6347194B2 (en) Electronic control unit
JP2011185294A (en) Seal member and seal structure
WO2021117477A1 (en) Terminal block
EP2819139B1 (en) Switch unit
JP2009189178A (en) Seal structure
JP5467883B2 (en) Packing and waterproof case using the same
JP2014123446A (en) Connector
JP2015125973A (en) Connector
JP2017096560A (en) Louver of air conditioner
JP2009228838A (en) Waterproof seal structure and apparatus provided with this seal structure
CN221203020U (en) Sealing structure, electric box and outdoor electric equipment
JP2021027689A (en) Grommet
WO2023231498A1 (en) Electric motor and electrical device
JP5910664B2 (en) Manufacturing method of electrical connector

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22926586

Country of ref document: EP

Kind code of ref document: A1