Rear cover, motor and heating and ventilation equipment

Abstract

The utility model discloses a rear cover for a motor, the motor and heating and ventilation equipment, the rear cover comprises a cover main body, a plurality of mounting columns and a baffle plate, the plurality of mounting columns are connected with the cover main body and are distributed along the circumferential direction of the cover main body, and the mounting columns extend along the axial direction of the cover main body; the baffles and the corresponding mounting columns are distributed in the circumferential direction of the cover body, and the height of the baffles relative to the inner bottom face of the cover body is larger than that of the mounting columns. According to the rear cover for the motor in the embodiment of the utility model, the mounting column and the baffle plate are arranged on the cover main body, and the height of the baffle plate relative to the inner bottom surface of the cover main body is greater than that of the mounting column, so that the rear cover can be connected with the motor through the mounting column during assembly, and the baffle plate can play a limiting role, so that the rear cover can be positioned at a preset position; and a fool-proof structure can be formed, so that assembly errors are reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC equipment, in particular to a rear cover for a motor, a motor and HVAC equipment. Background Art

[0002] When installing the rear cover of an external rotor fan, the wire hole needs to be positioned at a predetermined position to ensure the relative position of the wires coming out of the rear cover. In the related art, the rear cover is not easy to be positioned to the predetermined position, resulting in low rear cover installation efficiency and not conducive to improving assembly accuracy. Utility Model Content

[0003] One purpose of the utility model is to provide a motor with a positioning structure, which can quickly realize the installation of a cover body, thereby improving the assembly efficiency and ensuring the outlet position of the cover body.

[0004] Another object of the present invention is to provide a motor, comprising the aforementioned rear cover.

[0005] Another object of the present invention is to provide a HVAC device, comprising the aforementioned motor.

[0006] According to an embodiment of the utility model, a back cover for a motor includes: a cover body, a plurality of mounting posts and a baffle, wherein the plurality of mounting posts are connected to the cover body and are distributed along the circumference of the cover body, and the mounting posts extend along the axial direction of the cover body; the baffle and the corresponding mounting posts are distributed along the circumference of the cover body, and the height of the baffle relative to the inner bottom surface of the cover body is greater than the height of the mounting posts.

[0007] According to the back cover for the motor in the embodiment of the utility model, by arranging the mounting posts and the baffle on the cover body, and the height of the baffle relative to the inner bottom surface of the cover body is greater than the mounting posts, during assembly, the back cover can be connected to the motor through the mounting posts, and the baffle can play a limiting effect, so that the back cover can be positioned at a predetermined position, and can also form an anti-fool structure, reduce assembly errors, and help improve assembly efficiency.

[0008] In addition, the rear cover for the motor according to the above embodiment of the utility model may also have the following additional technical features:

[0009] In some examples of the present invention, the baffle includes a plurality of baffles, the plurality of baffles respectively correspond to at least a portion of the plurality of mounting columns, and the baffles and the corresponding mounting columns are adjacently distributed along the circumference of the cover body.

[0010] In some examples of the present invention, the multiple baffles include a first baffle and a second baffle, and the multiple mounting columns include a first mounting column and a second mounting column, wherein the first baffle is arranged on a side of the first mounting column facing away from the second mounting column, and the second baffle is arranged on a side of the second mounting column facing away from the first mounting column; or, the first baffle is arranged on a side of the first mounting column close to the second mounting column, and the second baffle is arranged on a side of the second mounting column close to the first mounting column.

[0011] In some examples of the present invention, the cover body includes a base plate and a surrounding plate, wherein the mounting posts are respectively connected to the surrounding plate and the base plate.

[0012] In some examples of the present invention, the baffle includes a first plate body and a second plate body connected to the first plate body, the first plate body is connected to the enclosure, and the second plate body is connected to the mounting column.

[0013] In some examples of the present invention, the baffle is connected to the enclosure and the corresponding mounting column.

[0014] In some examples of the present invention, a portion of the baffle that is higher than the corresponding mounting column has a radial gap with the enclosure plate.

[0015] In some examples of the present invention, the cover body has wiring holes; or, the multiple mounting posts are asymmetrically distributed; or, heat dissipation ribs are provided on the outer surface of the cover body; or, the inner surface of the cover body is provided with a first mating surface, and the first mating surface is used for bonding or heat exchange cooperation with the electronic components in the back cover.

[0016] The motor according to the embodiment of the utility model includes: the aforementioned back cover; a bearing seat, wherein a plurality of positioning columns are provided on the bearing seat, the plurality of positioning columns are respectively connected to a plurality of mounting columns correspondingly, and a portion of the baffle extends to be opposite to the plurality of positioning columns along the circumferential direction of the bearing seat, so as to limit the rotation of the bearing seat relative to the back cover.

[0017] According to the motor of the embodiment of the utility model, by providing the aforementioned rear cover, the rear cover can be quickly and accurately positioned on the bearing seat, thereby reducing the difficulty of assembling the rear cover and improving the assembly efficiency.

[0018] In some examples of the present invention, the baffle includes a plurality of baffles, the plurality of baffles include a first baffle and a second baffle, and the plurality of positioning columns include a first positioning column and a second positioning column, wherein the first baffle extends to a side of the first positioning column away from the second positioning column, and the second baffle extends to a side of the second positioning column away from the first positioning column; or, the first baffle extends to a side of the first positioning column close to the second positioning column, and the second baffle extends to a side of the second positioning column close to the first positioning column.

[0019] In some examples of the present invention, the bearing seat has a second mating surface, and the second mating surface is used for fitting or heat exchanging with the electronic components in the back cover.

[0020] In some examples of the present utility model, the bearing seat includes a plate portion and a first annular protrusion, the plate portion having a first side and a second side opposite to each other, the first annular protrusion being connected to the plate portion, the end of the positioning column being connected to the first side of the plate portion, the positioning column extending axially along the plate portion, the outer wall of the positioning column being connected to the inner wall of the first annular protrusion, a first positioning hole being provided on the mounting column, a second positioning hole being provided on the positioning column, and the first positioning hole being connected to the second positioning hole.

[0021] In some examples of the present invention, the inner wall of the rear cover cooperates with the outer wall of the first annular protrusion, and the inner diameter of the rear cover is greater than the outer diameter of the first annular protrusion.

[0022] In some examples of the present invention, the outer wall of the baffle is in contact with the inner wall of the first annular protrusion.

[0023] In some examples of the present invention, a second annular protrusion is provided on the second side of the plate portion, and a plurality of drainage grooves are provided on the second annular protrusion. The plurality of drainage grooves are arranged at intervals along the circumference of the plate portion, and the drainage grooves extend radially along the plate portion.

[0024] In some examples of the utility model, the bearing seat also includes a sleeve, which is connected to the plate portion and located on the second side of the plate portion, and the outer circumferential surface of the sleeve is provided with a groove extending along the axial direction; the motor also includes a stator core, which is sleeved on the sleeve, and the inner circumferential surface of the stator core is provided with a convex portion, and the convex portion is located in the groove.

[0025] In some examples of the present invention, the inner circumferential surface of the stator yoke core is provided with a transition groove, and the transition groove is arranged on both sides of the convex portion in the circumferential direction.

[0026] The HVAC equipment according to the embodiment of the utility model includes the aforementioned motor.

[0027] According to the HVAC equipment of the embodiment of the utility model, by applying the aforementioned motor, the assembly efficiency and structural stability of the HVAC equipment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the back cover in some embodiments of the utility model;

[0029] Figure 2 It is a schematic diagram of the structure of the back cover in some embodiments of the utility model;

[0030] Figure 3 is a schematic diagram of the structure of the bearing seat in some embodiments of the utility model (showing the first side of the plate portion);

[0031] Figure 4 is a schematic structural diagram of the bearing seat in some embodiments of the utility model (showing the second side of the plate portion);

[0032] Figure 5 It is a schematic diagram of the structure of the stator assembly in some embodiments of the utility model;

[0033] Figure 6 is a partial enlarged view of a stator assembly in some embodiments of the utility model;

[0034] Figure 7 It is a partial enlarged view of the motor in some embodiments of the utility model;

[0035] Figure 8 It is a partial structural exploded diagram of the motor in some embodiments of the utility model.

[0036] Reference numerals:

[0037] 100, rear cover; 110, cover body; 11, bottom plate; 101, wiring hole; 12, enclosure; 13, baffle; 131, first plate body; 132, second plate body; 133, first baffle; 134, second baffle; 135, third baffle; 14, mounting column; 141, first mounting column; 142, second mounting column; 143, third mounting column; 140, first positioning hole; 15, heat dissipation rib; 16, first mating surface; 200, stator assembly; 210, bearing seat; 21, plate; 22, first annular protrusion; 23, second annular Protrusion; 24, sleeve; 203, drain groove; 25, positioning column; 251, first positioning column; 252, second positioning column; 253, third positioning column; 250, second positioning hole; 26, stator assembly; 261, stator tooth; 262, stator yoke; 263, tooth yoke connecting part; 2621, convex part; 2620, transition groove; 240, groove; 300, electric control board; 400, plastic plate; 500, impeller; 600, retaining spring; 700, wear-resistant gasket; 800, butterfly spring; 900, rotor assembly; 1000, motor. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0039] Combination Figures 1 to 8 According to the embodiment of the utility model, the back cover 100 for the motor includes: a cover body 110 and a plurality of mounting posts 14, wherein the plurality of mounting posts 14 are connected to the cover body 110, and the mounting posts 14 can be used to install the back cover 100 on the motor 1000, and the plurality of mounting posts 14 are distributed along the circumference of the cover body 110, which can improve the stability after assembly, and the mounting posts 14 extend along the axial direction of the cover body 110, thereby, the mounting posts 14 are protruded on the cover body 110, and the mounting posts 14 can install the back cover 100 on the motor 1000, and can also play a certain supporting role, thereby improving the overall structural strength of the back cover 100.

[0040] Furthermore, combined with Figure 1The rear cover 100 further includes a baffle 13. The baffle 13 and the corresponding mounting post 14 are distributed along the circumference of the cover body 110. The height of the baffle 13 relative to the inner bottom surface of the cover body 110 is greater than the height of the mounting post 14. The baffle 13 may also be in the form of extending along the axial direction of the cover body 110, and the extension length is greater than the axial extension length of the mounting post 14 along the cover body 110, so that the height of the baffle 13 is greater than the height of the mounting post 14. In this way, during the assembly process of the rear cover 100, the baffle 13 can play a limiting role when the rear cover 100 rotates axially, especially when the mounting post 14 is fixedly connected with other connecting parts or positioning parts. If the rear cover 100 is not positioned at the predetermined position or the designated position, the baffle 13 may interfere with other parts or connecting parts. Therefore, the staff can quickly determine the assembly position of the rear cover 100 according to the positions of the mounting post 14 and the baffle 13 during assembly, thereby improving the assembly efficiency. In addition, the baffle 13 protrudes from the cover body 110 to a relatively high height, so that during the assembly process of the rear cover 100 , the baffle 13 can limit the rotation of the rear cover 100 , thereby achieving a fool-proof effect.

[0041] According to the back cover 100 for the motor according to the embodiment of the utility model, by setting the mounting column 14 and the baffle 13 on the cover body 110, and the height of the baffle 13 relative to the inner bottom surface of the cover body 110 is greater than the mounting column 14, during assembly, the back cover 100 can be connected to the motor 1000 through the mounting column 14, and the baffle 13 can play a limiting effect, so that the back cover 100 can be positioned at a predetermined position, and can also form an anti-fool structure, reduce assembly errors, and help improve assembly efficiency.

[0042] Combination Figure 1 In some embodiments of the utility model, the baffle 13 includes a plurality of baffles 13, and the plurality of baffles 13 correspond to at least a portion of the plurality of mounting posts 14, respectively. Thus, the baffle 13 can also improve the structural strength of the position where the mounting posts 14 are located, thereby improving the structural stability of the assembly position of the rear cover 100, which is beneficial to improving the overall structural strength of the motor 1000. Furthermore, the baffle 13 and the corresponding mounting posts 14 are adjacently distributed along the circumference of the cover body 110. During the assembly process, the baffles 13 are circumferentially distributed around the mounting posts 14, which can limit the circumferential rotation of the rear cover 100 and play an anti-fool effect. In other words, during the assembly process, the operator can simultaneously determine the assembly position of the rear cover 100 according to the positions of the mounting posts 14 and the baffles 13, so as to facilitate the operator to quickly locate the baffle. After positioning, the baffle 13 can also play a certain limiting role along the circumference, thereby improving the assembly accuracy.

[0043] Combination Figure 1In some embodiments of the present invention, the plurality of baffles 13 include a first baffle 133 and a second baffle 134, and the plurality of mounting posts 14 include a first mounting post 141 and a second mounting post 142, wherein the first baffle 133 is disposed on a side of the first mounting post 141 away from the second mounting post 142, and the second baffle 134 is disposed on a side of the second mounting post 142 away from the first mounting post 141. Alternatively, the first baffle 133 is disposed on a side of the first mounting post 141 close to the second mounting post 142, and the second baffle 134 is disposed on a side of the second mounting post 142 close to the first mounting post 141. That is to say, the first baffle 133 of the first mounting column 141 and the second baffle 134 of the second mounting column 142 are respectively located on different sides of the first mounting column 141 and the second mounting column 142. After the back cover 100 is assembled, when the back cover 100 rotates clockwise, it may interfere with the first baffle 133, and when the back cover 100 rotates counterclockwise, it may interfere with the second baffle 134. Therefore, the limiting effect of the baffle 13 can be improved, thereby improving the reliability of the assembly of the back cover 100 and improving the anti-foolproof effect.

[0044] For example, combining Figure 1 According to a specific embodiment of the present invention, the back cover 100 includes a first mounting post 141, a second mounting post 142 and a third mounting post 143, the first mounting post 141 is arranged adjacent to the first baffle 133, the second mounting post 142 is arranged adjacent to the second baffle 134, and the third mounting post 143 is arranged adjacent to the third baffle 135, wherein the first baffle 133 is arranged on a side of the first mounting post 141 close to the second mounting post 142, the second baffle 134 is arranged on a side close to the first mounting post 141, the third baffle 135 is arranged on a side away from the first mounting post 141, and the first baffle 133 is arranged on a side away from the third mounting post 143. It can be seen that two adjacent baffles 13 can be located on different sides of the connected mounting posts 14, so that when the back cover 100 rotates in the circumferential direction, the baffle 13 can interfere with the connecting piece connected to the mounting post 14, thereby achieving a limiting and anti-foolproofing effect.

[0045] Optionally, only two baffles 13 may be provided, for example, only the first baffle 133 and the second baffle 134 may be provided, thereby also realizing the limiting in the clockwise and counterclockwise directions.

[0046] Combination Figure 1 and Figure 2In some embodiments of the present invention, the cover body 110 includes a bottom plate 11 and a surrounding plate 12, wherein the mounting column 14 is connected to the surrounding plate 12 and the bottom plate 11 respectively, the mounting column 14 is connected to both the bottom plate 11 and the surrounding plate 12, and the bottom plate 11 and the surrounding plate 12 are located on different surfaces of the mounting column 14, which can increase the matching area between the mounting column 14 and the cover body 110, thereby improving the overall structural stability. Specifically, the bottom wall of the mounting column 14 is connected to the bottom plate 11, and the side wall of the mounting column 14 is connected to the surrounding plate 12. Figure 1 The bottom plate 11 and the enclosure 12 form a cavity, and the mounting column 14 is disposed in the cavity. The mounting column 14 is arranged along the periphery of the bottom plate 11 and connected to the inner wall of the enclosure 12.

[0047] Furthermore, the back cover 100 further includes a support seat, which is disposed on the bottom plate 11, and the mounting post 14 is disposed on the support seat, and the diameter of the support seat is greater than the diameter of the mounting post 14. In other words, the support seat is connected between the bottom plate 11 and the mounting post 14, and the support seat can provide support for the mounting post 14 to improve the stability after connection.

[0048] Combination Figure 1 The baffle 13 includes a first plate body 131 and a second plate body 132 connected to the first plate body 131. The first plate body 131 is connected to the enclosure 12, and the second plate body 132 is connected to the mounting column 14. In other words, the baffle 13 can be connected to the cover body 110 and the mounting column 14 at the same time, which can improve the stability of the connection of the baffle 13. The baffle 13 can also form a supporting structure in the cover body 110 to improve the overall structural strength of the rear cover 100. In addition, the baffle 13 is directly connected to the mounting column 14. When the position of the mounting column 14 changes, the position of the baffle 13 also changes accordingly. Therefore, the position of the mounting column 14 can be determined by the baffle 13, which can provide convenience for assembly. When the position of the mounting column 14 deviates from the predetermined position, the operator can find it in time through the baffle 13 with a higher height. For example, moving the rear cover 100 will be restricted by the baffle 13.

[0049] In some embodiments of the present invention, the baffle 13 is connected to the enclosure 12 and the corresponding mounting column 14 , which can improve the stability of the connection, help improve the structural strength of the position of the mounting column 14 , and facilitate determining the installation position of the mounting column 14 .

[0050] In some embodiments of the present invention, the portion of the baffle 13 that is higher than the corresponding mounting column 14 has a radial gap with the enclosure 12, thereby providing a clearance space for the assembly of the rear cover 100, making it easier for the cover body 110 to be connected to the motor 1000.

[0051] Combination Figure 1 and Figure 2In some embodiments of the utility model, the cover body 110 has a wiring hole 101 so that the wiring harness can be connected from the rear cover 100 to achieve electrical connection of the motor 1000. Among them, the wiring hole 101 can be fan-shaped, with a small inner curvature and a large outer curvature. Specifically, the fan-shaped wiring hole 101 can improve the heat dissipation effect. The design of the fan-shaped wiring hole 101 can increase the surface area of ​​the stator coil, which is conducive to heat dissipation, and the opening is large, which is convenient for maintenance and overhaul. The motor 1000 will generate heat during operation. The fan-shaped wiring hole 101 can more effectively dissipate the heat, avoiding overheating of the coil and causing damage to the motor 1000. In addition, the design of the fan-shaped wiring hole 101 can reduce electromagnetic interference between coils and improve the stability and performance of the motor 1000.

[0052] Combination Figure 1 In some embodiments of the present invention, the plurality of mounting posts 14 are asymmetrically distributed, and during assembly, it is easy to determine the installation position, which can reduce the error rate and improve assembly efficiency. Specifically, since the plurality of mounting posts 14 are asymmetrically arranged on the bottom plate 11, during installation, the initial positioning can be performed directly by observing the position of the mounting posts 14, for example, the distance between different mounting posts 14 and the wiring hole 101 can be used to determine the position of the mounting posts 14.

[0053] Combination Figure 2 In some embodiments of the present invention, heat dissipation ribs 15 are provided on the outer surface of the cover body 110, which can improve the heat dissipation effect, help protect the motor 1000, and improve the stability of the operation of the motor 1000.

[0054] Combination Figure 2 In some embodiments of the present invention, the inner surface of the cover body 110 is provided with a first mating surface 16, and the first mating surface 16 is used to fit or heat exchange with the electronic components in the back cover 100, thereby, the heat generated by the motor 1000 can be discharged through the back cover 100, and the heat dissipation effect is improved, thereby facilitating the service life and operation stability of the motor 1000. Specifically, the first mating surface 16 can cooperate with the heat spreading dip 15 to discharge the heat in the back cover 100 to the outside.

[0055] Combination Figures 1 to 8According to the motor 1000 of the embodiment of the utility model, it includes: according to the aforementioned rear cover 100 and bearing seat 210, a plurality of positioning posts 25 are provided on the bearing seat 210, and the plurality of positioning posts 25 are respectively connected to the plurality of mounting posts 14 correspondingly, and a part of the baffle 13 extends to be opposite to the plurality of positioning posts 25 along the circumferential direction of the bearing seat 210, so as to limit the rotation of the bearing seat 210 relative to the rear cover 100. Specifically, during assembly, the rear cover 100 can be adjusted to the position where the plurality of mounting posts 14 correspond to the plurality of positioning posts 25 one by one, and the rear cover 100 is buckled onto the bearing seat 210. In order to prevent the operator from being unable to accurately position the rear cover 100 at the predetermined position, after the rear cover 100 is buckled, the baffle 13 can also be used to limit the rotation of the bearing seat 210 relative to the rear cover 100, so as to improve the accuracy of assembly and facilitate the improvement of assembly efficiency.

[0056] That is to say, during assembly, the installation position of the rear cover 100 can be positioned by the position of the installation column 14, and the rear baffle 13 can be limited after positioning, thereby ensuring that the rear cover 100 can be stably and quickly assembled to the predetermined position.

[0057] According to the motor 1000 of the embodiment of the utility model, by providing the aforementioned rear cover 100, the rear cover 100 can be quickly and accurately positioned on the bearing seat 210, thereby reducing the difficulty of assembling the rear cover 100 and improving the assembly efficiency.

[0058] Combination Figure 1 In some embodiments of the present invention, the baffle 13 includes a plurality of baffles 13 including a first baffle 133 and a second baffle 134, and the plurality of positioning posts 25 include a first positioning post 251 and a second positioning post 252, wherein the first baffle 133 extends to a side of the first positioning post 251 away from the second positioning post 252, and the second baffle 134 extends to a side of the second positioning post 252 away from the first positioning post 251; or, the first baffle 133 extends to a side of the first positioning post 251 close to the second positioning post 252, and the second baffle 134 extends to a side of the second positioning post 252 close to the first positioning post 251, whereby when the back cover 100 rotates in the circumferential direction, one of the first baffle 133 or the second baffle 134 may interfere with the first positioning post 251 or the second positioning post 252, thereby preventing the rotation of the back cover 100, thereby achieving an anti-foolproof effect.

[0059] Combination Figure 1 and Figure 3 According to a motor 1000 of a specific embodiment of the utility model, the bearing seat 210 also includes a third positioning column 253, the third positioning column 253 is correspondingly arranged with the third mounting column 143, the second positioning column 252 is correspondingly arranged with the second mounting column 142, and the first positioning column 251 is correspondingly arranged with the first mounting column 141.

[0060] In some embodiments of the present invention, the bearing seat 210 has a second mating surface, which is used to fit or heat exchange with the electronic components in the back cover 100, which can improve the heat exchange effect, prevent the internal temperature of the motor 1000 from being too high, and help protect the motor 1000.

[0061] Combination Figure 3 and Figure 4 In some embodiments of the utility model, the bearing seat 210 includes a plate portion 21 and a first annular protrusion 22, the plate portion 21 has a first side and a second side opposite to each other, the first annular protrusion 22 is connected to the plate portion 21, the end of the positioning column 25 is connected to the first side of the plate portion 21, the positioning column 25 extends along the axial direction of the plate portion 21, the outer wall of the positioning column 25 is connected to the inner wall of the first annular protrusion 22, the mounting column 14 is provided with a first positioning hole 140, the positioning column 25 is provided with a second positioning hole 250, and the first positioning hole 140 is connected to the second positioning hole 250. Specifically, the positioning column 25 is convexly arranged on the first side of the plate portion 21, the end of the positioning column 25 is connected to the plate portion 21, and the side wall is connected to the annular protrusion, which can improve the stability of the connection between the positioning column 25 and the bearing seat 210, and can also improve the stability of the connection between the bearing seat 210 and the rear cover 100.

[0062] More specifically, the mounting column 14 may be a through hole, and the positioning column 25 may be a threaded hole, so that the two can be fixedly connected by screws.

[0063] Combination Figure 3 In some embodiments of the present invention, the inner wall of the rear cover 100 cooperates with the outer wall of the first annular protrusion 22, and the inner diameter of the rear cover 100 is larger than the outer diameter of the first annular protrusion 22. The annular protrusion can cooperate with the enclosure 12 of the cover body 110 to improve the stability after assembly, for example, the rear cover 100 is sleeved on the annular protrusion, and the inner circumferential wall of the rear cover 100 is stacked and connected with the inner circumferential wall of the annular protrusion.

[0064] In some embodiments of the utility model, the outer wall of the baffle 13 fits with the inner wall of the first annular protrusion 22, which can improve the tightness of the fit between the rear cover 100 and the bearing seat 210, and facilitate the initial connection between the rear cover 100 and the bearing seat 210, that is, a part of the rear cover 100 extends into the bearing seat 210.

[0065] Combination Figure 4 In some embodiments of the present invention, a plurality of drainage grooves 203 are provided on the second side of the plate portion 21. The plurality of drainage grooves 203 are arranged at intervals along the circumference of the plate portion 21. The drainage grooves 203 extend along the radial direction of the plate portion 21 for discharging water vapor to the outside.

[0066] Combination Figure 5 and Figure 6In some embodiments of the utility model, the bearing seat 210 further includes a sleeve 24, the sleeve 24 is connected to the plate portion 21 and is located on the second side of the plate portion 21, the outer circumferential surface of the sleeve 24 is provided with a groove 240 extending in the axial direction, and the motor further includes a stator core 26, the stator core 26 is sleeved on the sleeve 24, the inner circumferential surface of the stator core 26 is provided with a convex portion 2621, and the convex portion 2621 is located in the groove 240. Thus, the stator core 26 can be connected to the bearing seat 210, and the convex portion 2621 of the stator yoke 262 cooperates with the groove 240 on the sleeve 24 of the bearing seat 210, so that the stator core 26 can be quickly positioned, and the circumferential direction can also be determined to prevent the stator core 26 from rotating, which can achieve a positioning effect and help improve the structural stability.

[0067] Specifically, the bearing seat 210 is relatively fixed to the stator core 26; the stator core 26 includes a stator tooth portion 261, a stator yoke portion 262 and a yoke connecting portion 263, the stator tooth portion 261 is distributed around the stator yoke portion 262, and the stator yoke connecting portion 263 is respectively connected to the stator yoke portion 262 and the stator tooth portion 261. Specifically, the inner circle of the stator yoke portion 262 is provided with a convex portion 2621, and the convex portion 2621 is arc-shaped; the convex portion 2621 is embedded in the groove 240.

[0068] Optionally, the sleeve 24 and the stator yoke 262 are interference fit.

[0069] In some embodiments of the present invention, the inner circumference of the stator core 26 is provided with transition grooves 2620, which are arranged on both sides of the convex portion 2621 in the circumferential direction to avoid stress concentration and improve the stability of the structure, wherein the circumferential direction may be the circumferential direction of the motor. Figure 6 The inner circumference of the stator yoke 262 is provided with two transition grooves 2620, and an arc-shaped protrusion 2621 is provided between the two transition grooves 2620, and the transition groove 2620 can be connected to the arc-shaped protrusion 2621. In addition, the arc-shaped protrusion 2621 is convex relative to the circumference of the stator yoke 262 or the stator core 26, and the transition groove 2620 is concave relative to the circumference of the stator yoke 262 or the stator core 26.

[0070] A motor 1000 according to a specific embodiment is described below with reference to the accompanying drawings. Figures 1 to 8The motor 1000 includes a rear cover 100, an electric control board 300, a plastic plate 400, an impeller 500, a retaining ring 600, a wear-resistant washer 700, a butterfly spring 800, a stator core 26 and a rotor assembly 900. The rear cover 100 is composed of a bottom plate 11 and a surrounding plate 12 extending upward around the bottom plate 11, and the bottom plate 11 and the surrounding plate 12 form a cavity. Inside the cavity, a plurality of mounting columns 14 are arranged along the circumferential direction of the bottom plate 11, and the mounting columns 14 are connected to the inner wall surface of the bottom plate 11 and the inner wall surface of the surrounding plate 12, and a first positioning hole 140 is arranged in the middle of the mounting columns 14. A plurality of heat dissipation ribs 15 are arranged on the outer wall surface of the bottom plate 11, and a wiring hole 101 is arranged at the connection between the bottom plate 11 and the surrounding plate 12. The wiring hole 101 is fan-shaped, and the inner curvature of the wiring hole 101 is small and the outer curvature is large.

[0071] Furthermore, the angle a between the mounting post 14 far from the wiring hole 101 and the mounting post 14 close to the wiring hole 101 and the center line of the bottom plate 11 is an acute angle, and the angle b between the two mounting posts 14 on both sides of the wiring hole 101 and the center line of the bottom plate 11 is an obtuse angle. A raised baffle 13 extends upward from the mounting post 14.

[0072] The stator core 26 also includes a bearing seat 210 and a stator core. The bearing seat 210 includes a plate portion 21 and a sleeve 24 extending downward from the center of the plate portion 21. An annular protrusion extends upward from the first side of the plate portion 21, and the annular protrusion and the plate portion 21 form a cavity. Inside the cavity, a plurality of positioning columns 25 are arranged along the circumferential direction of the plate portion 21, the positioning columns 25 are connected to the plate portion 21 and the inner wall surface of the annular protrusion, a second positioning hole 250 is arranged in the middle of the positioning columns 25, a second annular protrusion 23 is arranged on the bottom surface or the second side of the plate portion 21, and a plurality of drainage grooves 203 are arranged on the second annular protrusion 23, and the drainage grooves 203 are radially distributed along the circumference. A groove 240 is arranged on the outer ring of the sleeve 24. The stator core includes a stator tooth portion 261, a stator yoke portion 262 and a tooth yoke connecting portion 263. The inner circle of the stator yoke 262 is provided with a convex portion 2621 , and the convex portion 2621 and the stator yoke 262 are connected via transition grooves 2620 on both sides.

[0073] The convex portion 2621 of the stator yoke 262 cooperates with the groove 240 of the outer ring of the sleeve 24 of the bearing seat 210 to limit the stator core circumferentially and prevent the stator core from rotating in the circumferential direction. The design of the transition groove 2620 can reduce the stress concentration caused by the stamping convex portion 2621 of the inner ring of the stator yoke 262.

[0074] During assembly, in order to ensure that the outlet position of the wiring hole 101 of the rear cover 100 is relatively fixed in the circumferential direction, the mounting column 14 of the rear cover 100 cooperates one by one with the positioning column 25 on the bearing seat 210, and the circumferential direction is limited by the raised baffle 13, which plays a role in preventing mistakes and greatly saves the production time of the motor 1000.

[0075] The present invention further provides a HVAC device. The HVAC device according to an embodiment of the present invention includes the aforementioned motor 1000. By applying the aforementioned motor 1000, the assembly efficiency and structural stability of the HVAC device can be improved.

[0076] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "embodiments", "specific embodiments", or "some embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiments are included in at least one embodiment or embodiment of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or embodiments. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or embodiments in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or embodiments described in this specification and the features of the different embodiments or embodiments, without contradiction.

[0081] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A back cover for a motor, characterized in that: include: Cover body; A plurality of mounting posts, the plurality of mounting posts are connected to the cover body and are distributed along the circumference of the cover body, and the mounting posts extend along the axial direction of the cover body; The baffle plate and the corresponding mounting column are distributed along the circumference of the cover body, and the height of the baffle plate relative to the inner bottom surface of the cover body is greater than the height of the mounting column.

2. The back cover according to claim 1, characterized in that: The baffles include a plurality of baffles, each of which corresponds to at least a portion of the plurality of mounting posts, and the baffles and the corresponding mounting posts are adjacently distributed along the circumference of the cover body.

3. The back cover according to claim 2, characterized in that: The plurality of baffles include a first baffle and a second baffle, and the plurality of mounting posts include a first mounting post and a second mounting post. Wherein, the first baffle is arranged on a side of the first mounting column away from the second mounting column, and the second baffle is arranged on a side of the second mounting column away from the first mounting column; or, the first baffle is arranged on a side of the first mounting column close to the second mounting column, and the second baffle is arranged on a side of the second mounting column close to the first mounting column.

4. The back cover according to any one of claims 1 to 3, characterized in that: The cover body comprises a bottom plate and a surrounding plate, Wherein, the mounting columns are connected to the enclosure and the base plate respectively; Or, the baffle includes a first plate body and a second plate body connected to the first plate body, the first plate body is connected to the enclosure plate, and the second plate body is connected to the mounting column; Or, the baffle is connected to the enclosure and the corresponding mounting column; Alternatively, a portion of the baffle that is higher than the corresponding mounting column has a radial gap with the enclosure.

5. The back cover according to claim 1, characterized in that: The cover body has wiring holes; or, the multiple mounting posts are asymmetrically distributed; or, heat dissipation ribs are provided on the outer surface of the cover body; or, the inner surface of the cover body is provided with a first mating surface, and the first mating surface is used for bonding or heat exchange with the electronic components in the back cover.

6. A motor, characterized in that: include: A back cover according to any one of claims 1 to 5; A bearing seat is provided with a plurality of positioning columns, the plurality of positioning columns are respectively connected to the plurality of mounting columns, and a portion of the baffle extends to be opposite to the plurality of positioning columns along the circumference of the bearing seat, so as to limit the rotation of the bearing seat relative to the rear cover.

7. The motor according to claim 6, characterized in that The baffles include a plurality of baffles, including a first baffle and a second baffle, and the plurality of positioning posts include a first positioning post and a second positioning post. Wherein, the first baffle extends to the side of the first positioning column away from the second positioning column, and the second baffle extends to the side of the second positioning column away from the first positioning column; or, the first baffle extends to the side of the first positioning column close to the second positioning column, and the second baffle extends to the side of the second positioning column close to the first positioning column.

8. The motor according to claim 6, characterized in that The bearing seat has a second mating surface, and the second mating surface is used for fitting or heat exchanging with the electronic components in the rear cover.

9. The motor according to any one of claims 6 to 8, characterized in that: The bearing seat includes a plate portion and a first annular protrusion, the plate portion has a first side and a second side opposite to each other, the first annular protrusion is connected to the plate portion, the end of the positioning column is connected to the first side of the plate portion, the positioning column extends axially along the plate portion, the outer wall of the positioning column is connected to the inner wall of the first annular protrusion, the mounting column is provided with a first positioning hole, the positioning column is provided with a second positioning hole, and the first positioning hole is connected to the second positioning hole.

10. The motor according to claim 9, characterized in that The inner wall of the rear cover cooperates with the outer wall of the first annular protrusion, and the inner diameter of the rear cover is larger than the outer diameter of the first annular protrusion; and / or The outer wall of the baffle is in contact with the inner wall of the first annular protrusion.

11. The motor according to claim 9, characterized in that A second annular protrusion is provided on the second side of the plate portion, and a plurality of drainage grooves are provided on the second annular protrusion. The plurality of drainage grooves are arranged at intervals along the circumference of the plate portion, and the drainage grooves extend along the radial direction of the plate portion.

12. The motor according to claim 9, characterized in that The bearing seat further comprises a sleeve, the sleeve is connected to the plate portion and is located on the second side of the plate portion, and the outer peripheral surface of the sleeve is provided with a groove extending along the axial direction; The motor further comprises a stator core, which is sleeved on the sleeve. The inner circumference of the stator core is provided with a convex portion, and the convex portion is located in the groove.

13. The motor according to claim 12, characterized in that The inner circumferential surface of the stator core is provided with a transition groove, and the transition groove is arranged on both sides of the convex portion in the circumferential direction.

14. A HVAC equipment, characterized in that: Comprising a motor according to any one of claims 6-13.

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