Chip collecting boot and motor
By creating a closed debris collection space inside the motor through the debris collection protective sleeve, the problem of debris affecting the stator and housing during the pressing process is solved, thereby reducing noise and extending the motor's lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BUEHLER MOTOR (ZHUHAI) CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-06-30
AI Technical Summary
In the prior art, the debris generated during the pressing process between the stator and the housing of the motor affects the operation of internal components, resulting in high noise and short service life.
A chip collection and protection sleeve is designed, comprising an annular body and a bent portion. The annular bent portion deforms to fit the inner wall of the outer shell, forming a closed chip collection space to collect debris and prevent it from affecting the operation of internal motor components.
It effectively prevents debris from affecting the operation of internal motor components, reduces noise, and does not affect the original stator and housing pressing process, thus reducing motor costs.
Smart Images
Figure CN224438645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, and in particular to a chip collection protective sleeve and a motor. Background Technology
[0002] Motors typically consist of a rotor, a stator, and a housing. To ensure the relative fixation of the stator and the housing, the existing technology usually adopts an interference fit between the stator and the housing, and the stator is pressed into the housing for fixation by extrusion. During the pressing process, peeling debris is generated between the stator and the housing. The debris falls into the housing and affects the operation of the internal components of the motor, resulting in problems such as high motor noise and short service life. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a chip collection protective sleeve and a motor, which can collect the chips generated during the assembly of the stator and the housing, thus preventing the chips from affecting the operation of the internal components of the motor.
[0004] On one hand, this utility model embodiment provides a chip collection protective sleeve, including:
[0005] An annular body, the upper end face of which is adapted to abut against the stator;
[0006] The annular bend has a first end connected to the outer wall of the annular body, and the annular bend extends gradually from the annular body in a direction away from the annular body. The annular bend is adapted to deform and abut against the inner wall of the outer shell.
[0007] According to some embodiments of the present invention, the chip collection protective sleeve further includes a sleeve portion connected to the upper end face of the annular body. The sleeve portion is provided with a plurality of abutment surfaces extending along the axial direction of the annular body, and the abutment surfaces are adapted to abut and fix against the inner wall of the stator core of the stator.
[0008] According to some embodiments of the present invention, the sleeve portion is a sleeve ring, the annular body is provided with a relief groove surrounding the sleeve portion, and the inner wall of the relief groove is connected to the outer wall of the sleeve portion.
[0009] According to some embodiments of the present invention, the extending direction of the annular bend is at an acute angle to the direction from the lower end face of the annular body to the upper end face of the annular body, and the annular bend and the annular body are sandwiched to form a chip collection groove.
[0010] According to some embodiments of the present invention, the annular body includes a first base ring and a second base ring, a stepped surface is formed between the first base ring and the second base ring, and the stepped surface connects to the annular bend portion;
[0011] The chip collection groove is sandwiched between the first base ring and the annular bend.
[0012] According to some embodiments of the present invention, the shortest distance from the upper end face of the annular body to the first end of the annular bend is greater than or equal to the length of the cross section of the annular bend along the extending direction of the annular bend.
[0013] According to some embodiments of the present invention, the wall of the chip collection groove is provided with an adhesive layer.
[0014] According to some embodiments of the present invention, the cross-sectional thickness of the annular bend gradually decreases along the extending direction of the annular bend.
[0015] According to some embodiments of this utility model, the material of the chip collection protective sleeve is plastic.
[0016] On the other hand, this utility model embodiment also provides a motor, including the chip collection protective sleeve as described above.
[0017] The present invention has at least the following beneficial effects: by adapting the deformation of the annular bending portion to fit the inner wall of the outer shell, and by combining the upper end face of the annular body with the stator, a space is formed inside the motor to accommodate the debris generated during the assembly of the stator and the outer shell, effectively preventing the debris generated during the assembly process from affecting the operation of the internal components of the motor; furthermore, the annular structure of the chip collection protective sleeve is simple and efficient to install, and will not affect the original pressing process of the stator and the outer shell, greatly avoiding the cost of changing the motor wiring.
[0018] Additional aspects and advantages of this invention 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 invention. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic diagram of the motor structure according to an embodiment of the present utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the chip collection protective sleeve according to an embodiment of the present utility model;
[0022] Figure 3 for Figure 2 A magnified view of part A in the middle.
[0023] Figure label:
[0024] 110. Annular body; 111. Clearance groove; 112. First base ring; 113. Second base ring; 120. Annular bend; 130. Chip collection groove; 140. Sleeve joint; 141. Abutment surface;
[0025] 910. Stator; 920. Outer casing. Detailed Implementation
[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying 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 with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.
[0029] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installation", "connection", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.
[0030] Please refer to Figures 1 to 3 As shown, in one aspect, this utility model provides a chip collection protective sleeve, including an annular body 110 and an annular bent portion 120. The upper end face of the annular body 110 is adapted to abut against the stator 910. The first end of the annular bent portion 120 is connected to the outer wall of the annular body 110, and the annular bent portion 120 gradually extends from the annular body 110 in a direction away from the annular body 110. The annular bent portion 120 is adapted to deform and abut against the inner wall of the outer shell 920.
[0031] According to an embodiment of the present invention, the chip collection sleeve is applied inside a motor. During the assembly process of the stator 910 and the housing 920 of the motor, the stator 910 and the housing 920 squeeze and drop chips. The annular bend 120 deforms and abuts against the inner wall of the housing 920. The chips fall into the space formed between the inner wall of the housing 920, the annular bend 120, and the annular body 110 until the stator 910 is installed in place. The upper end face of the annular body 110 abuts against the stator 910, so that the inner wall of the housing 920, the annular bend 120, the annular body 110, and the stator 910 form a closed chip collection space. The chip collection space isolates the chips from other components inside the motor.
[0032] According to the present invention, the chip collection protective sleeve adapts to the inner wall of the outer shell 920 by the deformation of the annular bending portion 120, and combines the upper end face of the annular body 110 with the abutment of the stator 910 to form a space inside the motor to accommodate the chips generated during the assembly of the stator 910 and the outer shell 920, effectively preventing the chips generated during the assembly process from affecting the operation of the internal components of the motor; moreover, the annular structure of the chip collection protective sleeve is simple and efficient to install, and will not affect the original pressing process of the stator 910 and the outer shell 920, greatly avoiding the cost of changing the motor wiring.
[0033] In this embodiment, the annular body 110 and the annular bend 120 are adapted to the motor structure as a ring. Of course, the shape can be adjusted adaptively based on different motor structures, such as a rectangular ring or an irregular ring.
[0034] In some embodiments, combined with Figures 1 to 3 As shown, the chip collection protective sleeve also includes a sleeve portion 140, which is connected to the upper end face of the annular body 110. The sleeve portion 140 is provided with a plurality of abutment surfaces 141 extending along the axial direction of the annular body 110. The abutment surfaces 141 are adapted to abut and fix with the inner wall of the stator core of the stator 910.
[0035] In this embodiment, when assembling the motor, the sleeve 140 can be preferentially abutted and fixed to the stator core, so that the stator 910 and the chip collection protective sleeve form an integral whole and are simultaneously pressed into the housing 920. Thus, during the assembly of the stator 910, the upper end face of the annular body 110 is always in contact with the stator 910, so that the inner wall of the housing 920, the annular bend 120, the annular body 110 and the stator 910 form a closed chip collection space that is always closed. The chips that are squeezed off by the stator 910 and the housing 920 fall stably into the closed chip collection space, effectively avoiding the leakage of chips during the assembly process.
[0036] In this embodiment, the sleeve part 140 is based on the original stator core inner wall design, that is, there is no need to make structural adjustments to the stator core inside the original motor design, thus reducing the motor design and manufacturing cost; of course, a structure fixed to the sleeve part 140 can also be designed independently in the stator 910, and the specific form can refer to the snap-fit structure, hole-shaft mating structure, etc. in the prior art.
[0037] In some embodiments, combined with Figures 1 to 3 As shown, the socket 140 is a socket ring, and the annular body 110 is provided with a relief groove 111 surrounding the socket 140, and the inner wall of the relief groove 111 is connected to the outer wall of the socket 140.
[0038] In this embodiment, the clearance groove 111 is used to avoid the corner of the stator 910, so that the upper end surface of the annular body 110 is fully in contact with the stator 910 and the contact surface 141 is fully in contact with the inner wall of the stator core, thereby improving the sealing of the enclosed chip collection space.
[0039] In some embodiments, combined with Figures 1 to 3 As shown, the extension direction of the annular bend 120 forms an acute angle with the direction from the lower end face of the annular body 110 to the upper end face of the annular body 110, and the annular bend 120 and the annular body 110 are sandwiched to form a chip collection groove 130.
[0040] In this embodiment, the angled annular bend 120 is easier to insert into the housing 920, and the pre-set chip collection groove 130 allows the chips to fall to the bottom of the chip collection groove 130, avoiding the accumulation of chips at the contact position between the annular bend 120 and the housing 920, thus improving the chip collection effect.
[0041] In other embodiments, the extension direction of the annular bend 120 may be set to be at a right angle or an obtuse angle to the direction from the lower end face of the annular body 110 to the upper end face of the annular body 110, so as to ensure that the annular bend 120 deforms and abuts against the inner wall of the outer shell 920 during the insertion of the outer shell 920.
[0042] In some embodiments, combined with Figures 1 to 3 As shown, the annular body 110 includes a first base ring 112 and a second base ring 113. A stepped surface is formed between the first base ring 112 and the second base ring 113, and the stepped surface is connected to the annular bending portion 120. A chip collection groove 130 is sandwiched between the first base ring 112 and the annular bending portion 120.
[0043] In this embodiment, by setting a stepped surface (i.e., in the radial direction of the chip collection protective sleeve, the cross-sectional thickness of the first base ring 112 is less than the cross-sectional thickness of the second base ring 113), the cross-sectional thickness of the first end of the annular bend 120 connected to the stepped surface can be set to be thicker, so as to prevent the annular bend 120 from breaking from the first end during the bending process.
[0044] In some embodiments, combined with Figures 1 to 3 As shown, the shortest distance from the upper end face of the annular body 110 to the first end of the annular bend 120 is greater than or equal to the length of the cross-section of the annular bend 120 along its extension direction. Even if the annular bend 120 is bent to be parallel to the axis of the chip collection sleeve, it cannot exceed the upper end face of the annular body 110 in height, thus preventing the annular bend 120 from abutting against the stator 910 during bending and ensuring that the debris generated between the stator 910 and the outer casing 920 falls stably into the chip collection space.
[0045] In some embodiments, the wall of the chip collection trough 130 is provided with an adhesive layer (not shown in the figure). The adhesive layer is used to adsorb chips, prevent chips from moving in the chip collection space, and effectively reduce motor noise.
[0046] In this embodiment, the adhesive layer can be made of resin, gel, etc.
[0047] In some embodiments, the cross-sectional thickness of the annular bend 120 gradually decreases along its extending direction. A smaller cross-sectional thickness is more conducive to the deformation of the annular bend 120 and improves the sealing performance between the annular bend 120 and the housing 920.
[0048] In some embodiments, the chip collection protective sleeve is made of plastic. Plastic has a certain structural strength while also having good deformation capacity; of course, silicone, rubber, etc., may also be used in other embodiments.
[0049] On the other hand, this utility model embodiment also provides a motor, including a chip collection protective sleeve as described in the above embodiment.
[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A debris collection boot for debris collection within a motor, the motor comprising a stator (910) and a housing (920) that are interference fit, characterized by, include: An annular body (110), the upper end face of which is adapted to abut against the stator (910). An annular bend (120) is provided, the first end of which is connected to the outer wall of the annular body (110), and the annular bend (120) extends gradually from the annular body (110) in a direction away from the annular body (110). The annular bend (120) is adapted to deform and abut against the inner wall of the outer shell (920).
2. The chip collection boot of claim 1, wherein, The chip collection protective sleeve also includes a sleeve part (140), which is connected to the upper end face of the annular body (110). The sleeve part (140) is provided with a plurality of abutment surfaces (141) extending along the axial direction of the annular body (110). The abutment surfaces (141) are adapted to abut and fix with the inner wall of the stator core of the stator (910).
3. The chip collection protection sleeve according to claim 2, characterized in that, The socket (140) is a socket ring, and the annular body (110) is provided with a relief groove (111) surrounding the socket (140), and the inner wall of the relief groove (111) is connected to the outer wall of the socket (140).
4. The chip collection protection cover according to any one of claims 1 to 3, characterized in that, The extension direction of the annular bend (120) is at an acute angle to the direction from the lower end face of the annular body (110) to the upper end face of the annular body (110), and the annular bend (120) and the annular body (110) are sandwiched to form a chip collection groove (130).
5. The chip collection protection cover according to claim 4, characterized in that, The annular body (110) includes a first base ring (112) and a second base ring (113), and a stepped surface is formed between the first base ring (112) and the second base ring (113), the stepped surface connecting the annular bend (120). The first base ring (112) and the annular bend (120) are sandwiched together by the chip collection groove (130).
6. The chip collection protection cover according to claim 4, characterized by The shortest distance from the upper end face of the annular body (110) to the first end of the annular bend (120) is greater than or equal to the length of the cross section of the annular bend (120) along the extending direction of the annular bend (120).
7. The chip collection guard of claim 4, wherein, The wall of the chip collection groove (130) is provided with an adhesive layer.
8. The chip collection guard according to any one of claims 1 to 3, characterized in that Along the extending direction of the annular bend (120), the cross-sectional thickness of the annular bend (120) gradually decreases.
9. The chip collection guard according to any one of claims 1 to 3, characterized in that The chip collection protective sleeve is made of plastic.
10. A motor characterized by Includes the chip collection protective sleeve as described in any one of claims 1 to 9.