Motor end cover

Abstract

The utility model relates to the technical field of motors, and provides a motor end cover which comprises an end cover body, the end cover body comprises a mounting plate part, a protruding part and a blind hole, the protruding part is arranged on one side of the mounting plate part, the hole bottom of the blind hole is located on the protruding part, the hole opening of the blind hole is located on the mounting plate part, and the side, provided with the protruding part, of the mounting plate part is suitable for being connected to a protective cover of a motor. The protruding part is suitable for penetrating out of a receding hole formed in the protective cover. And the power supply terminal is fixed on the end cover body through an insert injection molding process, and the two ends of the power supply terminal respectively protrude out of the two side surfaces of the mounting plate part. According to the invention, the assembly efficiency of the motor can be improved, for example, the installation process of the bearing is simplified, and the process of fixing the power supply terminal is saved. And meanwhile, the bearing sleeve can be prevented from being polluted by the blind hole, so that the motor can reach a low-noise and low-power-consumption state. In addition, the protruding part can penetrate out of the receding hole of the protective cover, the overall length of the motor can be shortened, and therefore the effect of motor miniaturization is achieved.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor end cover. Background Art

[0002] With the development trend of electric and intelligent vehicles, people have higher and higher requirements for the comfort of cars. Panoramic sunroofs are becoming more and more popular among customers, and the demand for skylights that match them is even stronger. Skylights have functions such as dimming, heat insulation, and privacy protection. They have low energy consumption and can be adjusted according to the needs of passengers. As the power mechanism for the movement of the skylight sunshade, the skylight motor is the heart of the car skylight.

[0003] At present, the parts installed on the end cover of the skylight motor are mostly connected by clamping, welding, gluing and other connection methods using limiting parts. For example, bearings are mostly limited by springs, and inductors, carbon brushes, electronic components, etc. are bonded by silicone. There are many processes and other accessories are required, which not only increases the weight of the motor, but also makes the production process of the motor complicated, resulting in higher energy consumption and lower motor production efficiency. In addition, the use of adhesives increases environmental factors.

[0004] Therefore, it is necessary to improve the structure of the existing canopy motor end cover, carry out modular design, and use the characteristics of the structural parts themselves to make the motor assembly simpler and more convenient, improve production efficiency, and make the motor more environmentally friendly. Utility Model Content

[0005] In order to solve the above problems, the present application provides a motor end cover with an ingenious design and a simple structure. The present application can improve the assembly efficiency of the motor, for example, simplifying the installation process of the bearing and saving the process of fixing the power terminal. At the same time, the blind hole can prevent the bearing sleeve from being contaminated, so that the motor can achieve a low noise and low power consumption state. In addition, the protrusion can pass through the clearance hole of the protective cover, which can shorten the overall length of the motor, thereby achieving the effect of miniaturization of the motor. The technical solutions adopted in the present application are as follows:

[0006] A motor end cover, comprising:

[0007] An end cover body, the end cover body comprises a mounting plate portion, a raised portion and a blind hole, the raised portion being arranged on one side of the mounting plate portion; the bottom of the blind hole is located on the raised portion, and the opening is located on the mounting plate portion, and the blind hole is used to clamp the bearing sleeve; the side of the mounting plate portion provided with the raised portion is suitable for being connected to the protective cover of the motor, and the raised portion is suitable for passing through the clearance hole arranged on the protective cover; a power terminal, the power terminal is fixed to the end cover body by an insert injection molding process, and the two ends of the power terminal respectively protrude from the two side surfaces of the mounting plate portion.

[0008] The present application can improve the assembly efficiency of the motor. The bearing sleeve can be stuck in the blind hole, which simplifies the installation process of the bearing sleeve. At the same time, the blind hole can prevent the bearing sleeve from being contaminated, reduce the friction when the motor rotates, and enable the motor to achieve a low noise and low power consumption state. The power terminal is injection molded together with the end cover body as an insert, which saves the process of fixing the power terminal separately. In addition, the raised portion provided with the blind hole can pass through the clearance hole of the protective cover, and there is no need for the protective cover to completely cover one side of the motor end cover, which can shorten the overall length of the motor, thereby achieving the effect of miniaturization of the motor.

[0009] In some embodiments, the blind hole is a stepped hole, including a large diameter section hole and a small diameter section hole, the small diameter section hole is used to place a buffer, and the large diameter section hole is used to clamp the bearing sleeve.

[0010] By designing the blind hole as a stepped hole, the buffer and the bearing sleeve can be placed, and the cross-sectional change (shoulder) between the large diameter section hole and the small diameter section hole can be used to limit the bearing sleeve. That is to say, one end of the bearing sleeve can abut against the shoulder, which can prevent the bearing sleeve from moving when the motor is working, thereby reducing the noise when the motor is working.

[0011] In some embodiments, the mounting plate is provided with a screw column, the screw column and the protrusion are located on the same side of the mounting plate, and the screw column is used to fix the protective cover. By providing the screw column (BOSS column), the end surface of the screw column can support the PCB board to provide installation space for components on the PCB board.

[0012] In some embodiments, the edge of the mounting plate is provided with a mounting groove, and the mounting groove is used for mounting and positioning the waterproof rubber plug. By providing the mounting groove, the waterproof rubber plug can be clamped in the mounting groove, and the fixing method of the waterproof rubber plug is convenient and fast.

[0013] In some embodiments, two carbon brush mounting parts are provided on one side of the mounting plate part away from the raised part, two torsion spring mounting columns are provided between the two carbon brush mounting parts, the carbon brush mounting parts are provided with carbon brush mounting holes, torsion spring clearance grooves and brush braid clearance grooves are provided around the carbon brush mounting holes, and a groove is provided on the hole wall of the carbon brush mounting hole, and the groove is used for heat dissipation of the carbon brush.

[0014] By providing a carbon brush mounting hole, a torsion spring mounting column, a torsion spring clearance groove and a brush braid clearance groove, the carbon brush and the torsion spring can be easily installed on the motor end cover, thereby improving the installation efficiency of the carbon brush and the torsion spring, and thus improving the assembly efficiency of the motor; by providing a groove on the hole wall of the carbon brush mounting hole, after the carbon brush is installed in the carbon brush mounting hole, the groove can be used to dissipate heat for the carbon brush, which is beneficial to extending the service life of the carbon brush.

[0015] In some embodiments, a plurality of vertical ribs are provided on a side of the carbon brush mounting portion away from the torsion spring mounting column, the vertical ribs enclose an inductor mounting position, and a convex rib is provided on a side of the vertical ribs close to the inductor mounting position.

[0016] By setting a plurality of vertical ribs to form an inductor installation position, it is convenient to clamp the inductor between the vertical ribs, thereby improving the installation efficiency of the inductor. At the same time, the setting of the vertical ribs facilitates the demoulding of the end cover body. By setting convex ribs on the vertical ribs, the outer wall of the inductor abuts against the convex ribs, and each vertical rib plays a role in preliminary positioning of the inductor, which can further improve the installation efficiency of the inductor.

[0017] In some embodiments, the power terminal is located on a side of the inductor mounting position away from the carbon brush mounting portion, so that the carbon brush mounting portion, the inductor mounting position and the power terminal are sequentially adjacently distributed in a radial direction of the blind hole.

[0018] By distributing the carbon brush mounting portion, the inductor mounting position and the power terminal adjacent to each other in the radial direction of the blind hole, it is convenient to electrically connect the carbon brush, the inductor and the power terminal in sequence after the carbon brush and the inductor are fixed to the end cover body. In other words, the distribution method of the carbon brush, the inductor and the power terminal is consistent with the connection order of the three.

[0019] In some embodiments, the mounting plate portion is provided with a Hall element clearance hole, and a limiting rib is provided at a position of the Hall element clearance hole away from the hole opening of the protruding portion, and the limiting rib is used to prevent the Hall element from tilting.

[0020] By setting the Hall element clearance hole, the Hall element on the PCB can be made to make way, so that the PCB is closer to the mounting plate, thereby shortening the overall length of the motor and reducing the space occupied by the motor. By setting the limiting rib, the Hall element can be limited to prevent the Hall element from tilting after being accidentally touched, thereby avoiding damage to the connection between the Hall element and the PCB.

[0021] In some embodiments, a card slot is provided on an edge of the mounting plate portion, and the card slot is adapted to a card connection portion provided on an edge of the protective cover.

[0022] By providing a card slot and utilizing the cooperation between the card slot and the card connection portion, the initial assembly of the protective cover and the motor end cover can be facilitated. The card slot plays a positioning role for the protective cover, which is beneficial to the positioning and installation of the protective cover and the motor end cover.

[0023] The motor end cover provided in the present application has at least one of the following beneficial effects:

[0024] 1. The motor end cover provided by the present application can improve the assembly efficiency of the motor. The bearing sleeve can be stuck in the blind hole, which simplifies the installation process of the bearing sleeve. At the same time, the blind hole can prevent the bearing sleeve from being contaminated, reduce the friction when the motor rotates, and enable the motor to achieve a low noise and low power consumption state. The power terminal is injection molded together with the end cover body as an insert, which saves the process of fixing the power terminal separately. In addition, the raised portion provided with the blind hole can pass through the clearance hole of the protective cover, and there is no need for the protective cover to completely cover one side of the motor end cover, which can shorten the overall length of the motor, thereby achieving the effect of miniaturization of the motor.

[0025] 2. The motor end cover provided in the present application designs the blind hole as a stepped hole. While being able to place a buffer and a bearing sleeve, it can also limit the bearing sleeve by utilizing the cross-sectional change (shoulder) between the large-diameter section hole and the small-diameter section hole. That is to say, one end of the bearing sleeve can abut against the shoulder, which can prevent the bearing sleeve from moving when the motor is working, thereby reducing the noise when the motor is working.

[0026] 3. The motor end cover provided in the present application has a screw column (BOSS column) whose end surface can support the PCB board to provide installation space for components on the PCB board.

[0027] 4. The motor end cover provided in the present application can clamp the waterproof rubber plug in the mounting groove by setting a mounting groove, and the fixing method of the waterproof rubber plug is convenient and quick.

[0028] 5. A motor end cover provided in the present application can facilitate the installation of carbon brushes and torsion springs on the motor end cover by setting carbon brush mounting holes, torsion spring mounting columns, torsion spring clearance grooves and brush braid clearance grooves, thereby improving the installation efficiency of carbon brushes and torsion springs, and further improving the assembly efficiency of the motor; by setting grooves on the hole walls of the carbon brush mounting holes, the grooves can be used to dissipate heat for the carbon brushes after the carbon brushes are installed in the carbon brush mounting holes, which is beneficial to extending the service life of the carbon brushes.

[0029] 6. The motor end cap provided by the present application has an inductor installation position formed by a plurality of vertical ribs, which facilitates the clamping of the inductor between the vertical ribs, thereby improving the installation efficiency of the inductor. At the same time, the arrangement of the vertical ribs facilitates the demoulding of the end cap body. By arranging convex ribs on the vertical ribs, the outer wall of the inductor abuts against the convex ribs, and each vertical rib plays a role in the preliminary positioning of the inductor, which can further improve the installation efficiency of the inductor.

[0030] 7. A motor end cover provided in the present application arranges the carbon brush mounting portion, the inductor mounting portion and the power terminal adjacent to each other in the radial direction of the blind hole, so that the carbon brush, the inductor and the power terminal can be electrically connected in sequence after the carbon brush and the inductor are fixed to the end cover body. That is to say, the distribution method of the carbon brush, the inductor and the power terminal is consistent with the connection order of the three.

[0031] 8. The motor end cover provided by the present application can make way for the Hall element on the PCB board by setting a Hall element clearance hole, so that the PCB board is closer to the mounting plate, thereby shortening the overall length of the motor and reducing the space occupied by the motor. By setting a limiting rib, the Hall element can be limited to prevent the Hall element from being tilted after being accidentally touched, thereby avoiding damage to the connection between the Hall element and the PCB board.

[0032] 9. A motor end cover provided in the present application can facilitate the initial assembly of the protective cover and the motor end cover by setting a card slot and utilizing the cooperation between the card slot and the card connection part. The card slot plays a positioning role for the protective cover, which is beneficial to the positioning and installation of the protective cover and the motor end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following will explain the preferred implementation mode in a clear and understandable manner with reference to the accompanying drawings, and further explain the above characteristics, technical features, advantages and implementation methods of a motor end cover:

[0034] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0035] Figure 2 yes Figure 1 Another perspective of the embodiment;

[0036] Figure 3 yes Figure 1 Another perspective of the embodiment;

[0037] Figure 4 yes Figure 1 Another perspective of the embodiment;

[0038] Figure 5 It is a schematic diagram of the structure of the motor end cover;

[0039] Figure 6 yes Figure 5 Another perspective of the embodiment;

[0040] Figure 7 yes Figure 5 Another perspective of the embodiment;

[0041] Figure 8 This is an exploded view of the motor end cover, bearing sleeve, and buffer;

[0042] Fig. 9 yes Figure 8 Another perspective of the embodiment;

[0043] Fig.10 yes Figure 1 An exploded view of an embodiment;

[0044] Fig.11 yes Fig.10 Another perspective of an embodiment.

[0045] Description of Figure Numbers:

[0046] End cover body 1, mounting plate part 2, raised part 3, power terminal 4, large diameter section hole 5, small diameter section hole 6, large diameter blind hole column 7, small diameter blind hole column 8, screw column 9, mounting groove 10, carbon brush mounting part 11, torsion spring mounting column 12, carbon brush mounting hole 13, torsion spring clearance groove 14, brush braid clearance groove 15, groove 16, vertical rib 17, convex rib 18, inductor mounting position 19, Hall element clearance hole 20, limiting rib 21, protective cover 22, clearance hole 23, buffer 24, bearing sleeve 25, waterproof rubber plug 26, carbon brush 27, torsion spring 28, inductor 29, Hall element 30, PCB board 31, clamping part 32, wiring harness 33, clamping slot 34. DETAILED DESCRIPTION

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0048] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0049] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0050] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0052] refer to Figure 1 , Figure 3 , Figure 5 , Figure 8 , Fig.10 , Fig.11 The present application provides a motor end cover, comprising: an end cover body 1 and a power terminal 4; the end cover body 1 comprises a mounting plate 2, a protrusion 3 and a blind hole, the protrusion 3 being arranged on one side of the mounting plate 2; the bottom of the blind hole is located on the protrusion 3, the opening is located on the mounting plate 2, and the blind hole is used to clamp the bearing sleeve 25; the protrusion 3 is a stepped blind hole column, comprising a large-diameter blind hole column 7 and a small-diameter blind hole column 8, the mounting plate 2 is provided with a side of the protrusion 3 suitable for connecting to the protective cover 22 of the motor, one end of the protrusion 3 is suitable for passing through the clearance hole 23 provided on the protective cover 22, and the column shoulder of the stepped blind hole column is suitable for abutting against the hole wall of the clearance hole 23; the mounting plate 2 is provided with a screw column 9 (BOSS column), the screw column 9 and the protrusion 3 are located on the same side of the mounting plate 2, and the screw column 9 is used to fix the protective cover 22. The power terminal 4 is fixed to the end cover body 1 by an insert injection molding process, and the two ends of the power terminal 4 protrude from the two side surfaces of the mounting plate 2 respectively.

[0053] Next, the connection relationship and position relationship between the motor end cover and other components in the motor are introduced as an example, so that we can better understand the technical features of the motor end cover in this application. Fig.10 , Fig.11 It can be seen that the PCB board 31 is arranged between the protective cover 22 and the mounting plate part 2, and a clearance hole is provided on the PCB board 31 for the protrusion 3 to pass through. The position corresponding to the screw column 9 on the PCB board 31 is provided with an opening for the screw to pass through. The power terminal 4 in the motor end cover is welded to the PCB board 31, and the wiring harness 33 of the motor is also welded to the PCB board 31. The protective cover 22 is installed on the side of the mounting plate part 2 where the protrusion 3 is provided by the cooperation of the screw and the screw column 9. The protective cover 22 is provided with a clearance hole 23 for the protrusion 3 to pass through. After the protective cover 22 is installed on the mounting plate part 2, a accommodating space is formed between the protective cover 22 and the mounting plate part 2, and the PCB board 31 is located in the accommodating space.

[0054] It is understandable that the power terminal 4 is injection molded together with the end cover body 1 as an insert, which saves the process of fixing the power terminal 4 separately. In addition, the raised portion 3 provided with a blind hole can pass through the clearance hole 23 of the protective cover 22, and there is no need for the protective cover 22 to completely cover one side of the motor end cover, which can shorten the overall length of the motor, thereby achieving the effect of miniaturization of the motor. Another point worth noting is that by designing the raised portion 3 as a stepped blind hole column, when the protective cover 22 is installed on one side of the motor end cover, one end of the raised portion 3 passes through the clearance hole 23 of the protective cover 22, and the column shoulder of the stepped blind hole column can abut against the hole wall of the clearance hole 23 on the protective cover 22 to form a seal, preventing foreign matter such as water vapor and dust from entering along the clearance hole 23 to the side of the mounting plate portion 2 where the raised portion 3 is provided, thereby preventing the PCB board 31 and the components on the PCB board 31 from being contaminated or damaged. In addition, the design of the stepped blind hole column can also play a guiding role, which is convenient for aligning the positioning hole 23 with the raised portion 3 and facilitating the positioning and installation of the protective cover 22.

[0055] In this embodiment, by providing a screw column 9 (BOSS column), the end surface of the screw column 9 can support the PCB board 31 to provide installation space for components on the PCB board 31. It is easy to understand that in other embodiments, the mounting plate portion 2 may not be provided with a screw column 9, but a pad is provided between the PCB board 31 and the mounting plate portion 2 to support the PCB board 31 with the pad.

[0056] In this embodiment, the raised portion 3 is a stepped blind hole column, while in other embodiments the raised portion 3 may be a cylinder, a square column or other cross-sectional shapes with constant cross-sectional dimensions, or a cylinder, a square column or other cross-sectional shapes with variable cross-sectional dimensions, as long as one end of the raised portion 3 can pass through the clearance hole 23 of the protective cover 22.

[0057] refer to Figure 2 , Figure 4 , Figure 6-Figure 9 , Fig.11In one embodiment, the blind hole is a stepped hole, including a large diameter hole 5 and a small diameter hole 6. The small diameter hole 6 is used to place the buffer 24, and the large diameter hole 5 is used to clamp the bearing sleeve 25. It can be understood that by setting the blind hole, the bearing sleeve 25 can be clamped in the blind hole, which simplifies the installation process of the bearing sleeve 25. At the same time, the blind hole can prevent the bearing sleeve 25 from being contaminated, reduce the friction when the motor rotates, and enable the motor to achieve a low noise and low power consumption state. By designing the blind hole as a stepped hole, while being able to place the buffer 24 and the bearing sleeve 25, the cross-sectional change (shoulder) between the large diameter hole 5 and the small diameter hole 6 can also be used to limit the bearing sleeve 25, that is, one end of the bearing sleeve 25 can abut against the shoulder, so that the movement of the bearing sleeve 25 can be prevented when the motor is working, thereby reducing the noise when the motor is working. It can be understood that in order to reduce the axial movement of the shaft when the motor rotates, a wear-resistant pad can be set between the buffer 24 and the bearing sleeve 25, and one end of the buffer 24 always pushes against the wear-resistant pad so that one end of the motor shaft always abuts against the wear-resistant pad, thereby reducing the movement of the motor shaft.

[0058] It is understandable that in order to prevent water vapor or rain from entering the accommodation space of the PCB board 31 along the wire harness 33, thereby causing corrosion or damage to the PCB board 31 and the components on the PCB board 31, waterproof measures can be taken on the path where the wire harness 33 enters the accommodation space. Figure 4 , Figure 7 , Figure 9-11 , a waterproof rubber plug 26 is arranged outside the wiring harness 33, and a mounting groove 10 adapted to the waterproof rubber plug 26 is arranged at the edge of the mounting plate portion 2, and the waterproof rubber plug 26 is interference fit with the mounting groove 10. The waterproof rubber plug 26 can be sleeved outside the wiring harness 33 by a secondary injection molding process (beer sleeve, rubber encapsulation). It can be understood that in other embodiments, the waterproof rubber plug 26 is not arranged outside the wiring harness 33. When the wiring harness 33 enters the accommodation space for accommodating the PCB board 31 from the position of the mounting groove 10, a sealant is squeezed into the mounting groove 10 to prevent water vapor or rainwater from entering the accommodation space along the wiring harness 33. The mounting groove 10 plays a role in making way for the wiring harness 33 and facilitating the accommodation of the sealant.

[0059] refer to Figure 1-Figure 11 In one embodiment, a card slot 34 is provided on the edge of the mounting plate portion 2, and the card slot 34 is adapted to the card connection portion 32 provided on the edge of the protective cover 22. By providing the card slot 34, the cooperation between the card slot 34 and the card connection portion 32 can facilitate the preliminary assembly of the protective cover 22 and the motor end cover. The card slot 34 plays a role in positioning the protective cover 22, which is beneficial to the positioning and installation of the protective cover 22 and the motor end cover.

[0060] refer to Figure 2 , Figure 4-Figure 9In one embodiment, two carbon brush mounting parts 11 are provided on one side of the mounting plate part 2 away from the protruding part 3, two torsion spring mounting columns 12 are provided between the two carbon brush mounting parts 11, a carbon brush mounting hole 13 is provided on the carbon brush mounting part 11, a torsion spring clearance groove 14 and a brush braid clearance groove 15 are provided around the carbon brush mounting hole 13, and a groove 16 is provided on the hole wall of the carbon brush mounting hole 13, and the groove 16 is used for heat dissipation of the carbon brush 27. It can be understood that by providing the carbon brush mounting hole 13, the torsion spring mounting column 12, the torsion spring clearance groove 14 and the brush braid clearance groove 15, the carbon brush 27 and the torsion spring 28 can be easily installed on the motor end cover, the installation efficiency of the carbon brush 27 and the torsion spring 28 is improved, and then the assembly efficiency of the motor is improved; by providing the groove 16 on the hole wall of the carbon brush mounting hole 13, after the carbon brush 27 is installed in the carbon brush mounting hole 13, the groove 16 can be used to dissipate heat for the carbon brush 27, which is conducive to extending the service life of the carbon brush 27. By providing the torsion spring mounting column 12 and the torsion spring clearance groove 14, the carbon brush 27 is subjected to the elastic force of the torsion spring 28 to contact the commutator (not shown) in the motor, thereby preventing the carbon brush 27 from contacting the commutator poorly and causing the motor to malfunction. It is understood that in this embodiment, the two carbon brush mounting holes 13 are arranged at 90 degrees, while in other embodiments, the two carbon brush mounting holes 13 can also be arranged at other angles, such as 120 degrees or 180 degrees.

[0061] refer to Figure 2 , Figure 4-Figure 9 In one embodiment, a plurality of vertical ribs 17 are provided on the side of the carbon brush mounting portion 11 away from the torsion spring mounting column 12. The vertical ribs 17 enclose an inductor mounting position 19, and a convex rib 18 is provided on the side of the vertical rib 17 close to the inductor mounting position 19. The inductor mounting position 19 formed by providing a plurality of vertical ribs 17 facilitates clamping the inductor 29 between the vertical ribs 17, thereby improving the installation efficiency of the inductor 29. At the same time, the provision of the vertical ribs 17 facilitates demoulding of the end cover body 1. By providing the convex ribs 18 on the vertical ribs 17, the outer wall of the inductor 29 abuts against the convex ribs 18, and each vertical rib 17 plays a role in preliminary positioning of the inductor 29, thereby further improving the installation efficiency of the inductor 29.

[0062] It is worth noting that reference Figure 2-Figure 7 In one embodiment, the power terminal 4 is located at the side of the inductor mounting position 19 away from the carbon brush mounting portion 11, so that the carbon brush mounting portion 11, the inductor mounting position 19 and the power terminal 4 are sequentially adjacently distributed around the radial direction of the blind hole. By sequentially adjacently distributing the carbon brush mounting portion 11, the inductor mounting position 19 and the power terminal 4 around the radial direction of the blind hole, it is convenient to sequentially electrically connect the carbon brush 27, the inductor 29 and the power terminal 4 after the carbon brush 27 and the inductor 29 are fixed to the end cover body 1, that is, the distribution mode of the carbon brush 27, the inductor 29 and the power terminal 4 is consistent with the connection order of the three.

[0063] refer to Figure 2, Figure 4 , Figure 6-Figure 10 In one embodiment, the mounting plate portion 2 is provided with a Hall element clearance hole 20, and a limiting rib 21 is provided at the hole of the Hall element clearance hole 20 away from the protrusion 3, and the limiting rib 21 is used to prevent the Hall element 30 from being skewed. It can be understood that by providing the Hall element clearance hole 20, the Hall element 30 on the PCB board 31 can be given way, so that the PCB board 31 is closer to the mounting plate portion 2, thereby shortening the overall length of the motor and reducing the space occupied by the motor. By providing the limiting rib 21, the Hall element 30 can be limited to prevent the Hall element 30 from being skewed after being accidentally touched, thereby avoiding the connection between the Hall element 30 and the PCB board 31 from being damaged.

[0064] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A motor end cover, characterized in that: include: An end cover body, the end cover body comprising a mounting plate portion, a raised portion and a blind hole, wherein the raised portion is arranged on one side of the mounting plate portion; The bottom of the blind hole is located at the raised portion, and the opening is located at the mounting plate portion, and the blind hole is used to clamp the bearing sleeve; the side of the mounting plate portion provided with the raised portion is suitable for connecting to the protective cover of the motor, and the raised portion is suitable for passing through the clearance hole provided on the protective cover; A power terminal is fixed to the end cover body through an insert injection molding process, and two ends of the power terminal protrude from two side surfaces of the mounting plate portion respectively.

2. A motor end cover according to claim 1, characterized in that: The blind hole is a stepped hole, including a large diameter section hole and a small diameter section hole, the small diameter section hole is used to place a buffer, and the large diameter section hole is used to clamp the bearing sleeve.

3. A motor end cover according to claim 1, characterized in that: The mounting plate portion is provided with a screw column, the screw column and the protruding portion are located on the same side of the mounting plate, and the screw column is used to fix the protective cover.

4. A motor end cover according to claim 1, characterized in that: An installation groove is provided on the edge of the installation plate portion, and the installation groove is used for installation and positioning of the waterproof rubber plug.

5. A motor end cover according to any one of claims 1 to 4, characterized in that: Two carbon brush mounting parts are provided on one side of the mounting plate away from the raised part, two torsion spring mounting columns are provided between the two carbon brush mounting parts, the carbon brush mounting parts are provided with carbon brush mounting holes, torsion spring clearance grooves and brush braid clearance grooves are provided around the carbon brush mounting holes, and a groove is provided on the hole wall of the carbon brush mounting hole, and the groove is used for heat dissipation of the carbon brush.

6. A motor end cover according to claim 5, characterized in that: A plurality of vertical ribs are arranged on a side of the carbon brush mounting portion away from the torsion spring mounting column, the vertical ribs enclose an inductor mounting position, and a convex rib is arranged on a side of the vertical ribs close to the inductor mounting position.

7. A motor end cover according to claim 6, characterized in that: The power terminal is located at a side of the inductor mounting position away from the carbon brush mounting portion, so that the carbon brush mounting portion, the inductor mounting position and the power terminal are sequentially adjacently distributed in a radial direction around the blind hole.

8. A motor end cover according to any one of claims 1-4, 6 and 7, characterized in that: The mounting plate is provided with a Hall element clearance hole, and a limiting rib is provided at the hole of the Hall element clearance hole away from the hole of the protruding part, and the limiting rib is used to prevent the Hall element from being skewed.

9. A motor end cover according to claim 8, characterized in that: A clamping groove is provided on the edge of the mounting plate portion, and the clamping groove is adapted to the clamping portion provided on the edge of the protective cover.

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