Motor and electronic device

Abstract

The utility model discloses a motor and electronic equipment. The motor comprises a motor shaft, a motor shell, an end cover, a cover body assembly and a fan. Wherein the end cover is arranged at the first end of the motor shell, the motor shaft penetrates through the end cover, and at least part of the motor shaft is arranged in the motor shell; the cover body assembly is arranged at the second end of the motor shell, and the cover body assembly is provided with an accommodating space; the fan is arranged in the accommodating space, and the fan and the motor shell are arranged at an interval. According to the motor, only one end of the motor shell is provided with the end cover, and the other end of the motor shell is provided with the cover body assembly, so that the cover body assembly can be used for replacing the other end cover of the motor shell, the purpose of saving the end cover is achieved, and the cost can be saved. And moreover, the fan arranged in the cover body assembly can directly dissipate heat of the motor from the other end of the motor shell due to the absence of the blocking of the other end cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to electric machines and electronic devices. BACKGROUND

[0002] As one of power sources, electric machines are widely used in different electronic devices in various industries, and with the use of electric machines, the heat problem of electric machines seriously affects the service life of electric machines.

[0003] In the related art, a fan and a fan shell are usually arranged at the rear end cover of the electric machine, the fan shell is mainly formed by stretching a thin plate, and the structural strength is low, which is extremely prone to deformation and easy to damage the fan. In addition, due to the blockage of the rear end cover, the heat dissipation effect of the fan is not obvious. CONTENT OF THE UTILITY MODEL

[0004] The present application provides an electric machine and an electronic device, only one end of the electric machine shell is provided with an end cover, and the other end of the electric machine shell is provided with a cover assembly, at this time the cover assembly can replace the other end cover of the electric machine shell, so as to save the end cover and save the cost. Moreover, lacking the blockage of the other end cover, the fan arranged in the cover assembly can directly dissipate heat from the other end of the electric machine shell.

[0005] In order to solve the above technical problems, the present application provides an electric machine, which comprises an electric machine shaft, an electric machine shell, an end cover, a cover assembly and a fan. The end cover is arranged at the first end of the electric machine shell, the electric machine shaft is arranged in the end cover, and at least part of the electric machine shaft is arranged in the electric machine shell; the cover assembly is arranged at the second end of the electric machine shell, and the cover assembly has a containing space; the fan is arranged in the containing space and is arranged in the electric machine shell.

[0006] In some embodiments, the cover assembly comprises a cover plate and a cover body, the cover plate is arranged at the first end of the cover body, the second end of the cover body is arranged at the second end of the electric machine shell, and the cover body has a containing space.

[0007] In some embodiments, the cover body comprises a first shell and a second shell, the cover plate is arranged at the first end of the first shell, at least part of the second shell is arranged in the first shell and close to the second end of the first shell, the second end of the first shell is arranged at the second end of the electric machine shell, and the second shell forms the containing space with the first end of the first shell.

[0008] In some embodiments, the second shell has a first through hole. When the fan is arranged in the containing space, the fan is arranged in the second shell and the air outlet of the fan faces the first through hole.

[0009] In some embodiments, the first shell is provided with a power connector, and the power line of the fan is connected to the external power source through the power connector.

[0010] In some embodiments, the motor further comprises an encoder connecting line, the encoder connecting line is arranged at the second end of the motor housing; the second housing is provided with a second through hole, the first housing is provided with a connecting terminal, and the encoder connecting line is connected to the connecting terminal through the second through hole.

[0011] In some embodiments, the cover assembly further comprises a sealing member, the sealing member is arranged in the second through hole, and the sealing member is used to seal the gap between the encoder connecting line and the second through hole.

[0012] In some embodiments, the motor further comprises a first fastener. The cover plate is provided with a third through hole, the fan is provided with a fourth through hole, and the first fastener passes through the third through hole and the fourth through hole in sequence to fasten the cover plate and the fan.

[0013] In some embodiments, the first housing and the second housing are integrally formed or detachably connected.

[0014] In some embodiments, the motor further comprises a second fastener. The cover plate is provided with a fifth through hole, the cover body is provided with a sixth through hole, the second end of the motor housing is provided with a seventh through hole, and the second fastener passes through the fifth through hole, the sixth through hole and the seventh through hole in sequence to fixedly connect the cover plate, the motor housing and the cover body.

[0015] To solve the above technical problems, another aspect of the present application provides an electronic device, which comprises the motor described above.

[0016] The motor and the electronic device provided in some embodiments of the present application comprise a motor shaft, a motor housing, an end cover, a cover assembly and a fan. The end cover is arranged at the first end of the motor housing, the motor shaft is arranged in the end cover, and at least part of the motor shaft is arranged in the motor housing. The cover assembly is arranged at the second end of the motor housing, and the cover assembly has a containing space. The fan is arranged in the containing space and is spaced apart from the motor housing. The end cover is arranged at only one end of the motor housing, and the cover assembly is arranged at the other end of the motor housing. At this time, the cover assembly can replace the other end cover of the motor housing, so that the end cover is saved, and the cost is saved. In addition, the fan arranged in the cover assembly can directly cool the motor from the other end of the motor housing due to the absence of the other end cover. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort. Among them:

[0018] Figure 1 is a structural schematic diagram of the motor in some embodiments of the present application;

[0019] Figure 2 is a cross-sectional view of the motor shown in FIG. 1; Figure 1

[0020] Figure 3 is a first perspective view of a cover assembly in some embodiments of the present application;

[0021] Figure 4 is a second perspective view of a cover assembly in some embodiments of the present application;

[0022] Figure 5 is a first perspective view of a cross-section of a cover assembly in some embodiments of the present application;

[0023] Figure 6 is a second perspective view of a cross-section of a cover assembly in some embodiments of the present application;

[0024] Figure 7 is a perspective view of a seal in some embodiments of the present application;

[0025] Figure 8 is a perspective view of an electronic device in some embodiments of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings, but not all the structures. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the description and the drawings of this application and the above description of the drawings in the specification, the terms "comprise" and "have" and any variations thereof, are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0029] ​Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to one of ordinary skill in the art, embodiments described herein can be combined with one another.

[0030] In the description of the embodiments of the present application, the term "and / or" is merely used to describe an associated relationship between associated objects, and indicates that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally indicates that the front and rear associated objects are in an "or" relationship.

[0031] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0032] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0033] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing", and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0034] Referring to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of a motor in some embodiments of the present application, Figure 2 is Figure 1 a cross-sectional schematic diagram of the motor shown in FIG. 10. The motor 10 includes a motor shaft 101, a motor housing 102, an end cover 103, a cover assembly 104, and a fan 105.

[0035] The end cover 103 is arranged at a first end of the motor housing 102, the motor shaft 101 is arranged through the end cover 103, and at least part of the motor shaft 101 is arranged in the motor housing 102.

[0036] The cover assembly 104 is arranged at a second end of the motor housing 102, and the cover assembly 104 has a containing space. The fan 105 is arranged in the containing space and is arranged spaced apart from the motor housing 102.

[0037] In some embodiments, the first end and the second end of the motor housing 102 are arranged spaced apart or oppositely along the extension direction of the motor shaft 101.

[0038] In some embodiments, the end cover 103 is a front end cover.

[0039] In some embodiments, the cover assembly 104 is of transparent material, metal material or other.

[0040] In some embodiments, as shown in Figure 1 The cover assembly 104 is provided with a power connector 1041, and the fan 105 includes a power line. The power line of the fan 105 is connected to an external power source or other device through the power connector 1041. The external power source can be a commercial power supply, an energy storage battery or other, which is not limited here.

[0041] When the power connector 1041 is directly connected to the external power source, the external power source can be directly used to power the fan 105; when the power connector 1041 is connected to other devices, the fan 105 can be indirectly powered through other devices.

[0042] Optionally, the size and shape of the power connector 1041 can be determined according to actual conditions. For example, the shape of the power connector 1041 can be cylindrical as shown in Figure 1 , or other shapes, which are not limited here.

[0043] In some embodiments, as shown in Figure 1 The cover assembly 104 is provided with a first wiring terminal 1042, and the motor 10 further includes an encoder and an encoder connection line (not shown in the figure). The encoder is arranged in the containing space composed of the end cover 103 and the motor housing 102. One end of the encoder connection line is connected to the encoder, and the other end of the encoder connection line is led out from the second end of the motor housing 102 and connected to the first wiring terminal 1042. The encoder connection line can be connected to an external power source or other device through the first wiring terminal 1042.

[0044] Optionally, the size and shape of the first wiring terminal 1042 can be determined according to actual conditions. For example, the shape of the first wiring terminal 1042 can be as shown in Figure 1The cuboid shown can also be other shapes, which are not limited here.

[0045] Optionally, the positional relationship between the power connector 1041 and the first wiring terminal 1042 can be as shown in Figure 1 As shown, it is arranged on the same side of the cover assembly 104, and can also be arranged on different sides of the cover assembly 104, which is not limited here.

[0046] It can be understood that the cover assembly 104 is provided with a corresponding through hole, so that the power connector 1041 and the first wiring terminal 1042 can be arranged on the corresponding through hole. At this time, in order to ensure the close connection of the power connector 1041 and the cover assembly 104, and to ensure the close connection of the first wiring terminal 1042 and the cover assembly 104, a sealing member can be arranged on the through hole, which seals the gap between the power connector 1041 and the cover assembly 104 on the through hole, and seals the gap between the first wiring terminal 1042 and the cover assembly 104 on the through hole. On the one hand, when the fan 105 cools the inside of the motor 10, it can avoid wind from leaking out of the gap. On the other hand, it can avoid dust from floating into the gap and affecting the performance of the encoder and other devices inside the motor 10.

[0047] In some embodiments, as shown in Figure 1 The motor housing 102 is provided with a second wiring terminal 1021, and the motor 10 further includes a power line, one end of the power line is connected inside the motor 10, and the other end of the power line is connected to the second wiring terminal 1021. The power line can be connected to an external power source or other devices through the second wiring terminal 1021, at which time the motor 10 can be directly powered by an external power source, or indirectly powered by other devices.

[0048] Optionally, the positional relationship between the power connector 1041, the first wiring terminal 1042 and the second wiring terminal 1021 can be as shown in Figure 3 to Figure 6 As shown, it is arranged on the same side, and can also be arranged on different sides, which is not limited here.

[0049] It can be understood that the motor housing 102 is provided with a corresponding through hole, so that the second wiring terminal 1021 can be arranged on the corresponding through hole. At this time, in order to ensure the close connection of the second wiring terminal 1021 and the motor housing 102, a sealing member can be arranged on the through hole, which seals the gap between the second wiring terminal 1021 and the motor housing 102 on the through hole, avoids dust from floating into the gap, and avoids affecting the performance of the encoder and other devices inside the motor 10.

[0050] In some embodiments, the cover assembly 104 connects the fan 105 by fasteners, and the cover assembly 104 connects the second end of the motor housing 102 by fasteners. The fasteners used to connect the fan 105 and the second end of the motor housing 102 are the same or different. Here, the same and different refer to the type, size, number, etc. The fasteners can be screws, bolts, studs, nuts, or others.

[0051] Exemplarily, the cover assembly 104 is provided with a first communication hole and a second communication hole, the fan 105 is provided with a third communication hole, and the second end of the motor housing 102 is provided with a fourth communication hole. The motor 10 further includes a first fastener and a second fastener. The first fastener passes through the first communication hole and the third communication hole in sequence to fixedly connect the cover assembly 104 and the fan 105. The second fastener passes through the second communication hole and the fourth communication hole in sequence to fixedly connect the cover assembly 104 and the motor housing 102. Here, the first fastener and the second fastener can be bolts, studs, screws, nuts, or others, which are not limited here.

[0052] Here, the first communication hole and the second communication hole are both provided on the side of the cover assembly 104 away from the second end of the motor housing 102. Alternatively, the first communication hole is provided on the side of the cover assembly 104 away from the second end of the motor housing 102, and the second communication hole is provided on the side of the cover assembly 104 close to the second end of the motor housing 102. Alternatively, the first communication hole and part of the second communication hole are provided on the side of the cover assembly 104 away from the second end of the motor housing 102, and the other part of the second communication hole is provided on the side of the cover assembly 104 close to the second end of the motor housing 102.

[0053] In some embodiments, the cover assembly 104 connects the fan 105 by a riveting structure, and the cover assembly 104 connects the second end of the motor housing 102 by a riveting structure. The riveting structures used to connect the fan 105 and the second end of the motor housing 102 are the same or different. Here, the same and different refer to the type, size, number, etc. The riveting structure is similar to a groove and a protrusion.

[0054] Exemplarily, the cover assembly 104 is provided with a first riveting structure and a second riveting structure, the second end of the motor housing 102 is provided with a third riveting structure, and the fan 105 is provided with a fourth riveting structure. The first riveting structure and the third riveting structure tightly fit to fixedly connect the cover assembly 104 and the motor housing 102. The second riveting structure and the fourth riveting structure tightly fit to fixedly connect the cover assembly 104 and the fan 105. Here, the riveting structure can be a groove and a protrusion or others, which are not limited here.

[0055] The first riveting structure is arranged on the cover body assembly 104 at a side away from the second end of the motor shell 102, the second riveting structure is arranged on the cover body assembly 104 at a side close to the second end of the motor shell 102, the third riveting structure is arranged on the second end of the motor shell 102, and the fourth riveting structure is arranged on the fan 105 at a side away from the second end of the motor shell 102, that is, the fourth riveting structure is arranged on the back of the fan 105.

[0056] The first riveting structure and the second riveting structure are integrally formed with or detachably connected to the cover body assembly 104, the third riveting structure is integrally formed with or detachably connected to the motor shell 102, and the fourth riveting structure is integrally formed with or detachably connected to the fan 105.

[0057] In some embodiments of the present application, the motor 10 is provided with an end cover 103 (such as a front end cover) only at one end of the motor shell 102, and the other end of the motor shell 102 is not provided with an end cover (such as a rear end cover), but is provided with a cover body assembly 104. At this time, the cover body assembly 104 can be used to replace the other end cover (such as the rear end cover) of the motor shell 102, so as to save the end cover (such as the rear end cover), save the cost, and reduce the overall height of the motor 10, so that the motor 10 can be applied to occasions with relatively compact space. Moreover, due to the lack of the other end cover (such as the rear end cover), the fan 105 arranged in the cover body assembly 104 can directly dissipate heat from the other end of the motor shell 102 to the motor 10.

[0058] Referring to Figure 3 to Figure 6 , Figure 3 are structural schematic diagrams of the cover body assembly 104 in some embodiments of the present application. Specifically, Figure 4 is a first perspective structural schematic diagram of the cover body assembly 104, Figure 5 is a second perspective structural schematic diagram of the cover body assembly 104, Figure 6 is a first perspective structural schematic diagram of a cross section of the cover body assembly 104, Figure 1 to Figure 6 is a second perspective structural schematic diagram of a cross section of the cover body assembly 104.

[0059] In some embodiments, as shown in Figure 3 to Figure 6 , the cover body assembly 104 includes a cover plate 1043 Figure 1 to Figure 6 (not shown) and a cover body 1044. The cover plate 1043 is arranged at a first end of the cover body 1044, a second end of the cover body 1044 is arranged at the second end of the motor shell 102, and the cover body 1044 has a containing space.

[0060] The size and shape of the cover plate 1043 correspond to the shape and size of the first end of the cover body 1044.

[0061] In order to ensure that the fan 105 can be placed in the accommodation space, the shape and size of the fan 105 are required to be correspondingly arranged with the accommodation space. At this time, the size of the cross section of the fan 105 is smaller than the size of the cross section of the cover plate 1043 and / or the cover assembly 104.

[0062] In some embodiments, as shown in Figure 3 to Figure 6 The cover 1044 includes a first shell 201 and a second shell 202. The cover plate 1043 is arranged at a first end of the first shell 201. At least part of the second shell 202 is arranged in the first shell 201, and the second end of the second shell 202 is close to the second end of the first shell 201. The second end of the first shell 201 is arranged at the second end of the motor shell 102. At this time, the second shell 202 and the first end of the first shell 201 form an accommodation space. When at least part of the fan 105 is arranged in the accommodation space, the fan 105 is arranged spaced apart from the second shell 202.

[0063] In order to ensure that at least part of the second shell 202 can be placed in the first shell 201, the size of the second shell 202 is required to be smaller than the size of the first shell 201.

[0064] The distance between the fan 105 and the second shell 202 can be determined according to the size of the first shell 201, the size of the second shell 202 and the size of the fan 105, or determined according to actual conditions, which is not limited here.

[0065] In some embodiments, the first end of the second shell 202 is away from the second end of the motor shell 102, and the second end of the second shell 202 is close to the second end of the motor shell 102. At this time, the second end of the second shell 202 can be horizontally leveled with the second end of the first shell 201. Alternatively, there is a predetermined distance between the second end of the second shell 202 and the second end of the first shell 201. If the second end of the first shell 201 is taken as a horizontal line, the second end of the second shell 202 can be located above the horizontal line or below the horizontal line at this time.

[0066] In some embodiments, the first shell 201 and the second shell 202 are integrally formed or detachably connected. When the first shell 201 and the second shell 202 are detachably connected, the first shell 201 and the second shell 202 can be connected by fasteners. Alternatively, the first shell 201 and the second shell 202 are detachably connected by a riveting structure.

[0067] In some embodiments, as shown in Figure 2 The second shell 202 has a first through hole O1 (due to the angle, Figure 5 , Figure 6 and Figure 1The first through-hole O1 in the first shell 201 has a side (i.e. solid) but the actual first through-hole O1 is connected and not solid. When at least part of the fan 105 is arranged in the accommodation space, the air outlet of the fan 105 faces the first through-hole O1, and the fan 105 can send air to the second end of the motor housing 102 through the first through-hole O1. Since the second end of the motor housing 102 is not provided with an end cover (such as a rear end cover), air can be directly sent to the motor 10 through the first through-hole O1 to cool the motor 10.

[0068] In addition, the arrangement of the first through-hole O1 can concentrate the air delivered by the fan 105. In particular, when the motor 10 is working, the fan 105 can directly cool the motor 10, which can avoid the motor 10 being in a high-temperature state for a long time, protect the performance of the motor 10, and prolong the service life of the motor 10.

[0069] In some embodiments, as shown in Figure 5 to Figure 6 The first shell 201 is provided with a power connector 1041, and a power line of the fan 105 is connected to an external power source or other devices through the power connector 1041.

[0070] In some embodiments, the motor 10 further includes an encoder connection line, and the encoder connection line is arranged at the second end of the motor housing 102. As shown in Figure 7 The second shell 202 is provided with a second through-hole O2, and the first shell 201 is provided with a wiring terminal. The encoder connection line is connected to the wiring terminal through the second through-hole O2. The wiring terminal corresponds to the first wiring terminal 1042 described above, and the encoder connection line is connected to the first wiring terminal 1042 through the second through-hole O2.

[0071] In some embodiments, the cover assembly 104 further includes a sealing piece 1045. The sealing piece 1045 is arranged in the second through-hole O2, and the sealing piece 1045 is used to seal the gap between the encoder connection line and the second through-hole O2, so as to avoid dust entering the inside of the motor 10, especially the inside of the motor housing 102, and avoid interference with devices such as an encoder in the motor housing 102.

[0072] The material of the sealing piece 1045 can be rubber, silicone or other materials. The size of the sealing piece 1045 can be arranged according to the size of the second through-hole O2 and the size of the encoder connection line, or determined according to actual conditions.

[0073] In some embodiments, a structural diagram of the sealing piece 1045 is as shown in Figure 1As shown, the seal 1045 includes a communication hole 301 in the middle, through which the encoder connecting line can pass. Opposite sides of the seal 1045 are recessed to form grooves 302. The size, shape, etc. of the grooves 302 can be correspondingly arranged according to the size, shape, etc. of the second shell 202, for example, the width and depth, etc. of the grooves 302 are arranged according to the thickness of the second shell 202.

[0074] In some embodiments, as shown in Figure 2 and Figure 1 The motor 10 further includes a first fastener 106, the cover plate 1043 is provided with a third through hole O3 (corresponding to the first communication hole described above), the fan 105 is provided with a fourth through hole (corresponding to the third communication hole described above, not shown due to angle reasons), and the first fastener 106 passes through the third through hole O3 and the fourth through hole in sequence to fasten and connect the cover plate 1043 and the fan 105.

[0075] In some embodiments, as shown in Figure 2 and Figure 1 The motor 10 further includes a second fastener 107, the cover plate 1043 is provided with a fifth through hole O5 (corresponding to part of the second communication hole described above), the cover body 1044 is provided with a sixth through hole (corresponding to another part of the second communication hole described above), and the second end of the motor shell 102 is provided with a seventh through hole (corresponding to the fourth communication hole described above, not shown due to angle reasons). The second fastener 107 passes through the fifth through hole O5, the sixth through hole and the seventh through hole in sequence to fixedly connect the cover plate 1043, the cover body 1044 and the motor shell 102.

[0076] The sixth through hole (in this case, the sixth through hole is opposite to the fifth through hole O5, not shown due to angle reasons) can be arranged on the side of the cover body 1044 away from the second end of the motor shell 102, as shown in Figure 1 When the sixth through hole is arranged on the side of the cover body 1044 away from the second end of the motor shell 102, the second fastener 107 needs to pass through the fifth through hole O5, the sixth through hole and the seventh through hole in sequence.

[0077] The sixth through hole (in this case, the sixth through hole is identified as O6) can be arranged on the side of the cover body assembly 104 close to the second end of the motor shell 102, as shown in Figure 1 When the sixth through hole is arranged on the side of the cover body assembly 104 close to the second end of the motor shell 102, the second fastener 107 can pass through the sixth through hole and the seventh through hole in sequence, without passing through the fifth through hole O5.

[0078] The sixth through hole is arranged on the first shell 201. Specifically, the sixth through hole is arranged on the first end of the first shell 201, and / or the sixth through hole is arranged on the second end of the first shell 201.

[0079] The first fastener 106 and the second fastener 107 are the same or different.

[0080] Compared with the way of punching a side wall of the motor to connect the shroud in the related art, the arrangement of the first fastener 106 and the second fastener 107 and the arrangement of the through holes on the cover plate 1043 and the shroud 1044 in the motor housing 102 and the shroud assembly 104 in some embodiments of the present application can avoid the wear caused by the contact between the fastener and the internal device of the motor 10, and avoid the impact on the performance of the motor 10.

[0081] In some embodiments, as shown in Figure 2 and Figure 8 To ensure the smooth operation of the fan 105, a through hole 303 can be arranged on the cover plate 1043, and the air outlet of the fan 105 faces away from the through hole 303, so that the pressure difference between the front and back of the fan 105 is increased when the fan 105 rotates, so that the fan 105 can rotate normally and transport wind with large wind power. In addition, the through hole 303 can also dissipate heat for the fan 105, so as to avoid the mutual offset between the cold wind transported by the fan 105 and the heat generated by the operation of the fan 105.

[0082] Referring to Figure 8 , ​ is a structural schematic diagram of an electronic device in some embodiments of the present application. The electronic device 20 includes the motor 10 described in any of the above embodiments, which will not be described here.

[0083] The type of the motor 10 can be a servo motor, a direct current motor, an asynchronous motor or other, which is not limited here.

[0084] In some embodiments, the electronic device 20 further includes a memory and a processor. The memory stores a computer program. The processor involved in the present application can be referred to as a CPU (Central Processing Unit), which can be an integrated circuit chip, and can also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component.

[0085] In some embodiments, the electronic device 20 can be an agricultural machine, a medical machine or other, which is not limited here.

[0086] In summary, the fan mounting structure on the motor (such as a servo motor) on the market usually locks screws on three sides of the motor to fix the connection between the fan cover and the motor. Among them, the fan cover is usually a sheet metal part, and during the locking screw process, the open end of the fan is easy to deform, and is easy to be limited by the wall thickness of the end cover (such as the rear end cover) and the motor housing, the hole depth of the screw thread is difficult to guarantee, the screw may slip, and special punching tooling is required for production, and the process is complicated. In addition, the fan is separately installed, and in some compact structures, the total length of the motor will be limited.

[0087] And the motor 10 and the electronic device 20 provided in some embodiments of the application only set the end cover 103 at one end of the motor housing 102, and set the cover assembly 104 at the other end of the motor housing 102, at this time, the cover assembly 104 can be used to replace the other end cover (such as the rear end cover) of the motor housing 102, to save the end cover (such as the rear end cover), save costs, reduce the overall height of the motor 10, and make the motor 10 applicable to occasions with relatively compact space.

[0088] And, the fan 105 is arranged in the cover assembly 104, and the fan 105 can be used to dissipate heat from the motor 10 from the other end of the motor housing 102. The cover assembly 104 further comprises a sealing member 1045, and the sealing member 1045 can effectively prevent dust from entering the encoder.

[0089] In addition, the thickness of the motor 10 of the application is not limited to the motor housing 102 and the cover assembly 104, and can be applied to occasions with relatively thick thickness, and can also be applied to occasions with relatively thin thickness.

[0090] The above is only an embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent process transformation using the content of the specification and the drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. An electric machine characterized in that, The motor comprises: a motor shaft; a motor housing and an end cover, the end cover is arranged at a first end of the motor housing, the motor shaft is arranged through the end cover, and at least part of the motor shaft is arranged in the motor housing; a cover assembly arranged at a second end of the motor housing, the cover assembly has a containing space; a fan arranged in the containing space and spaced apart from the motor housing.

2. The electric machine of claim 1, wherein, The cover assembly comprises a cover plate and a cover body, the cover plate is arranged at a first end of the cover body, and a second end of the cover body is arranged at the second end of the motor housing, and the cover body has the containing space.

3. The electric machine of claim 2, wherein, The cover body comprises a first housing and a second housing, the cover plate is arranged at a first end of the first housing, at least part of the second housing is arranged in the first housing and close to a second end of the first housing, and the second end of the first housing is arranged at the second end of the motor housing. The second housing and the first end of the first housing form the containing space.

4. The electric machine of claim 3, wherein, The second housing has a first through hole; When the fan is arranged in the containing space, the fan is spaced apart from the second housing, and an air outlet of the fan faces the first through hole.

5. The electric machine of claim 3, wherein, The first housing is provided with a power connector, and a power line of the fan is connected to an external power source through the power connector.

6. The electric machine of claim 3, wherein, The motor further comprises an encoder connecting line arranged at the second end of the motor housing; The second housing is provided with a second through hole, the first housing is provided with a terminal, and the encoder connecting line is connected to the terminal through the second through hole; The cover assembly further comprises a sealing member arranged in the second through hole, and the sealing member is used for sealing a gap between the encoder connecting line and the second through hole.

7. The electric machine of claim 3, wherein, The motor further comprises a first fastener; The cover plate is provided with a third through hole, the fan is provided with a fourth through hole, and the first fastener passes through the third through hole and the fourth through hole in sequence to fasten and connect the cover plate and the fan.

8. The electric machine of claim 3, wherein, The first housing and the second housing are integrally formed or detachably connected.

9. The electric machine of claim 2, wherein, The motor further comprises a second fastener; The cover plate is provided with a fifth through hole, the cover body is provided with a sixth through hole, the second end of the motor housing is provided with a seventh through hole, and the second fastener passes through the fifth through hole, the sixth through hole and the seventh through hole in sequence to fixedly connect the cover plate, the motor housing and the cover body.

10. An electronic device, comprising: The motor comprises: The motor of any one of claims 1-9.

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