Motor and air conditioner

Abstract

The utility model relates to the technical field of motor braking, and discloses a motor and an air conditioner. The motor includes: a housing; the rotor is rotationally located in the machine shell; the armature is arranged in the casing and movably connected with the casing, and the armature is positioned at at least one axial end of the rotor; the resistance piece is connected between the rotor and the armature and corresponds to the armature; the winding is arranged on the rotor; when the winding is powered on, the winding generates a magnetic field, and the armature moves towards the resistance piece under the magnetic force of the winding and makes contact with the resistance piece for braking. When the winding is powered off, the armature moves in the direction away from the resistance piece and is separated from the resistance piece. The whole motor is simple in structure and low in cost. When the resistance piece or the armature needs to be replaced and maintained, only the machine shell needs to be opened, and operation and maintenance are easy. And the space in the shell is reasonably utilized, and the size of the motor is not increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor braking, for example to a motor and air conditioner. BACKGROUND

[0002] At present, electromagnetic brakes are needed in many motors, and the electromagnetic brakes are mainly used for braking and position keeping of the motor. The electromagnetic brake generally controls the friction coefficient between the friction plate and the armature by controlling the gap state of the friction plate in the brake.

[0003] A motor electromagnetic brake is disclosed in the related art, which comprises a rear end cover connected with a motor shell, a motor shaft connected with the rear end cover through a bearing, a spline sleeve connected on the motor shaft through a key, connected with a friction plate through a spline connection, and a flange plate arranged between the friction plate and the rear end cover; an armature is connected on a stator through a hollow bolt, and a certain gap is left between the armature and the stator, and a coil is installed in the stator; a bolt passes through the stator, the hollow bolt and the flange plate, and is threadedly connected with the rear end cover to connect all the parts together. Meanwhile, springs are installed inside and outside the coil in the stator.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The motor electromagnetic brake in the related art has relatively many parts, and when the friction plate needs to be replaced due to serious wear, all the parts on the right side of the friction plate need to be removed, which makes the maintenance and replacement of the electromagnetic brake cumbersome and difficult.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those skilled in the art. CONTENT OF THE INVENTION

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a motor and air conditioner to reduce the number of motor brake parts and improve maintenance convenience.

[0009] The motor provided by the embodiment of the present disclosure comprises: a shell; a rotor rotating in the shell; an armature arranged in the shell and movably connected with the shell, the armature being located at at least one end of the rotor in the axial direction; a resistance element connected between the rotor and the armature and corresponding to the armature; and a winding arranged in the rotor; when the winding is electrified, the winding generates a magnetic field, the armature moves towards the resistance element under the magnetic force of the winding and is in contact with the resistance element to brake; when the winding is de-energized, the armature moves away from the resistance element and is separated from the resistance element.

[0010] In the embodiment of the present disclosure, when the motor is working, the rotor rotates in the shell. The armature is movably connected with the shell, and the friction plate and the winding are arranged in the rotor. In this way, when the motor is working normally, the resistance element and the winding rotate with the rotor. When the motor receives a braking instruction and needs to brake, the winding is electrified, and the winding generates a magnetic field. In this way, the armature movably connected with the shell is attracted by the magnetic force of the winding and moves towards the rotor. Since the armature is correspondingly arranged with the resistance element, when the armature moves to be in contact with the resistance element, the armature and the resistance element are adsorbed together, which can limit the rotation of the rotor, so that the braking of the motor is realized. When the braking needs to be released, the winding is de-energized, so that the winding has no magnetic field, the armature is not affected by the magnetic force, and the armature is separated from the resistance element. In this way, the armature no longer limits the rotor, and the motor can work normally. The motor of the embodiment of the present disclosure reasonably utilizes the space in the shell, and arranges the armature and the resistance element at at least one end of the rotor in the axial direction. In this way, the braking of the rotor can be realized, and the size of the motor is not increased, and the structure is simple and the cost is low. When the resistance element or the armature needs to be replaced, only the shell needs to be disassembled for operation, so that the operation is convenient.

[0011] Optionally, an elastic element is connected between the armature and the shell, the armature is fixed in the shell through the elastic element, and the elastic element can be elastically deformed to enable the armature to move relative to the shell.

[0012] In the embodiment of the present disclosure, the armature is movably connected with the shell through the elastic element and is fixed in the shell through the elastic element. In this way, when the armature is attracted by the magnetic force of the winding and moves towards the rotor, the elastic element can be elastically deformed. In this way, the elastic element does not affect the movement of the armature towards the resistance element, and can ensure that the armature is always connected with one end of the shell, so that the rotor can be braked. When the winding is de-energized, the armature is not attracted by the magnetic force of the winding and moves away from the resistance element under the action of the elastic element, so that the armature is separated from the resistance element. In this way, the braking can be released, and the armature can return to the initial position, so that the armature does not affect the rotation of the rotor.

[0013] Optionally, the winding is arranged at one end of the rotor towards the armature, and the resistance element is arranged on the surface of the winding towards the armature.

[0014] In the embodiment of the present disclosure, when the winding is powered, the winding can attract the armature to move towards the winding, the resistance element is arranged on the surface of the winding facing the armature, so that when the armature moves towards the winding, the armature can contact the resistance element on the surface of the winding, so that the armature is not affected by other components to ensure the contact between the armature and the resistance element. Moreover, the winding is arranged at the end of the rotor facing the armature, which can ensure the accuracy of the movement path of the armature and the accuracy of the contact between the armature and the resistance element, and avoid the change of the movement path of the armature.

[0015] Optionally, the resistance element is a friction plate; or, the surface of the armature facing the rotor is provided with a groove, and when the armature moves towards the rotor, the resistance element is clamped with the armature; or, the surface of the resistance element facing the armature is provided with a groove, and when the armature moves towards the rotor, the resistance element is clamped with the armature.

[0016] In the embodiment of the present disclosure, when the resistance element is a friction plate, when the armature contacts the resistance element, the wall surface of the armature facing the rotor contacts the wall surface of the friction plate facing the armature, and the braking is performed by contact friction. In this way, when the resistance element is a friction plate, the friction plate is simple to process and easy to install. Alternatively, the surface of the armature facing the rotor is provided with a groove, so that when the armature moves towards the winding, the resistance element can be inserted into the groove to realize the clamping of the armature and the resistance element. Since the armature is connected to the shell, when the armature is clamped with the resistance element, the armature can limit the rotation of the resistance element and the rotor, and the resistance element and the armature will not move relatively, thereby enabling the rotor to be quickly braked, improving the braking speed and braking efficiency. Alternatively, the surface of the resistance element facing the armature is provided with a groove, so that when the armature moves towards the winding, the armature can be inserted into the groove to realize the clamping of the armature and the resistance element. In this way, the limiting effect of the armature and the resistance element can also be improved, and the braking speed and braking efficiency can also be improved.

[0017] Optionally, the winding is arranged in a ring shape along the circumference of the rotor, wherein the winding is provided with a through hole, one end of the resistance element is connected to the rotor, the resistance element passes through the through hole, and the other end of the resistance element protrudes from the winding.

[0018] In the embodiment of the present disclosure, the winding is arranged in a ring shape along the circumference of the rotor, which can ensure the area of the winding, and further ensure the magnetic force of the winding after being powered to attract the movement of the armature. At the same time, one end of the resistance element is fixedly connected to the rotor, and the resistance element can also protrude from the end surface of the winding facing the armature through the through hole of the winding. In this way, the setting of the resistance element and the winding can not only ensure the size of the magnetic force, but also ensure the contact accuracy of the resistance element and the armature.

[0019] Optionally, the number of resistance elements is multiple, and the multiple resistance elements are sequentially and spacedly arranged along the circumference of the rotor; and / or, along the direction from the center of the rotor to the outer circumferential wall of the rotor, the width of the resistance element gradually increases.

[0020] In the embodiments of the present disclosure, the plurality of resistance pieces are arranged, so that the contact area between the resistance pieces and the armature is increased, and the braking capacity is improved. Since the rotor rotates in the circumferential direction, the plurality of resistance pieces are arranged in sequence and spaced apart in the circumferential direction of the rotor, so that the plurality of points in the circumferential direction of the rotor are used to apply force for braking, the braking effect and the braking speed are improved, and fast braking is achieved. The resistance pieces change with the shape of the axial end of the rotor, so that the radial arrangement area of the winding at the axial end of the rotor is ensured, and the area of the resistance piece is also ensured.

[0021] Optionally, the motor further comprises: a rotating shaft extending in the axial direction of the rotor and penetrating through the shell, the rotor is sleeved outside the rotating shaft and fixedly connected with the rotating shaft, and the rotating shaft can drive the rotor to rotate synchronously; the number of armatures is multiple, and the plurality of armatures are arranged in sequence and spaced apart in the circumferential direction of the rotating shaft; or, the armature is an integrated structure, and the armature is arranged in sequence and spaced apart outside the rotating shaft.

[0022] In the embodiments of the present disclosure, the plurality of armatures are arranged in sequence and spaced apart in the circumferential direction of the rotating shaft, so that the contact area between the armature and the resistance piece in the circumferential direction is increased, and the braking force in the circumferential direction is improved, and the braking speed of the rotor is improved. Alternatively, the armature is an integrated structure, so that when the armature is moved towards the rotor by the magnetic force of the winding, the whole armature can be moved towards the rotor, avoiding the problem that the plurality of armatures are not synchronized when the armature is moved, and further avoiding the problem of poor braking effect. The armature is arranged in sequence and spaced apart outside the rotating shaft, that is, the armature does not contact the rotating shaft, so that when the armature is subjected to the magnetic force, the armature can be moved towards the winding in the axial direction of the rotating shaft, and the rotation of the rotating shaft is not affected.

[0023] Optionally, the number of rotors is multiple, and the plurality of rotors are arranged in sequence and spaced apart in the axial direction of the rotating shaft outside the rotating shaft. The plurality of rotors at least include a first rotor and a second rotor, and the first rotor and the second rotor are respectively located at two ends of the rotating shaft in the axial direction. The end of the first rotor away from the second rotor and / or the end of the second rotor away from the first rotor is provided with a resistance piece and a winding, and the shell corresponding to the resistance piece and the winding is provided with an armature.

[0024] In the embodiments of the present disclosure, when the motor is provided with a plurality of rotors, the first rotor and the second rotor located at two ends of the rotating shaft are both provided with a resistance piece and a winding corresponding thereto, and the shell corresponding to the first rotor and the second rotor is also provided with an armature, so that the first rotor and the second rotor can be braked by the armature, the resistance piece and the winding. When the motor needs to be braked, the armature corresponding to the first rotor and the second rotor moves and contacts the resistance piece corresponding to the armature, so that the rotors at both ends of the rotating shaft are braked, and the rotors and the rotating shaft can be braked quickly, and the braking speed is improved.

[0025] Optionally, in the axial direction of the shell, the projection area of the armature on the shell is greater than or equal to the projection area of the rotor.

[0026] In the embodiments of the present disclosure, the resistance member is arranged at the end of the rotor in the axial direction of the housing, so that the projected area of the armature on the housing is greater than or equal to the projected area of the rotor in the axial direction of the housing. In this way, the area of the armature is greater than the area of the resistance member, so that the contact area of the armature and the resistance member can be ensured, and the armature can contact all the resistance members.

[0027] The embodiments of the present disclosure also provide an air conditioner, which comprises the motor according to any one of the above embodiments.

[0028] The motor and the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0029] In the embodiments of the present disclosure, the armature is arranged in the housing and movably connected with the housing, and the friction plate is arranged on the rotor. When braking is needed, the winding arranged on the rotor is electrified, and a magnetic field is generated after the winding is electrified. In this way, the winding can attract the armature to move towards the rotor, and when the armature contacts the resistance member, the rotation of the rotor can be limited, so that braking is achieved. When the winding is de-energized, the winding has no magnetic field, and the armature is separated from the resistance member. In this way, the armature no longer limits the rotation of the rotor, so that the rotor can rotate normally, to ensure the normal operation of the motor. In the motor according to the embodiments of the present disclosure, the resistance member and the armature are arranged on the rotor and the housing respectively, so that the parts of the motor for braking are reduced, the overall structure of the motor is simple, and the cost is low. When the resistance member or the armature needs to be replaced or repaired, the housing only needs to be opened, so that the operation and repair are easy. Moreover, the space in the housing is reasonably utilized, and the size of the motor is not increased.

[0030] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0031] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0032] Figure 1 is a structural schematic diagram of a motor provided by the embodiments of the present disclosure;

[0033] Figure 2 is a structural schematic diagram of a motor provided by the embodiments of the present disclosure; Figure 1 is a sectional structural schematic diagram of the motor in the direction of A-A;

[0034] Figure 3 is a sectional structural schematic diagram of another motor provided by the embodiments of the present disclosure;

[0035] Figure 4 is a local structural schematic diagram of a motor provided by the embodiments of the present disclosure;

[0036] Figure 5 is a structural schematic diagram of a housing and armature provided by an embodiment of the present disclosure;

[0037] Figure 6 is a partial structural schematic diagram of another motor provided by an embodiment of the present disclosure;

[0038] Figure 7 is a cross-sectional structural schematic diagram of another motor provided by an embodiment of the present disclosure;

[0039] Figure 8 is a cross-sectional structural schematic diagram of another motor provided by an embodiment of the present disclosure.

[0040] Reference signs:

[0041] 10, housing; 101, armature; 102, elastic member; 103, second bearing; 20, rotor; 201, resistance member; 202, winding; 203, first rotor; 204, second rotor; 205, permanent magnet; 206, recess; 30, stator; 301, copper coil; 302, first bearing; 40, rotating shaft. DETAILED DESCRIPTION

[0042] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, for the purpose of convenient explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to show.

[0043] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances in order to describe the embodiments of the present disclosure. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0044] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0045] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0046] Unless otherwise specified, the term "a plurality of" means two or more.

[0047] The term "and / or" is a description of the association relationship of the object, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0048] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0049] For the convenience of description, the axial direction of the rotor, the axial direction of the casing and the axial direction of the rotating shaft in the present application are as shown in Figure 2 .

[0050] In combination with Figures 1 to 8 As shown in the drawings, the present disclosure provides an electric machine, which comprises a casing 10, a rotor 20, an armature 101, a resistance piece 201 and a winding 202, the rotor 20 rotates in the casing 10; the armature 101 is arranged in the casing 10 and movably connected with the casing 10, the armature 101 is located at least one end of the axial direction of the rotor 20; the resistance piece 201 is connected between the rotor 20 and the armature 101, and corresponds to the armature 101; the winding 202 is arranged in the rotor 20; wherein, as shown in Figure 3 When the winding 202 is energized, the winding 202 generates a magnetic field, the armature 101 moves towards the resistance piece 201 under the magnetic force of the winding 202 and contacts and brakes the resistance piece 201; as Figure 2As shown, when the winding 202 is powered off, the armature 101 moves away from the resistance piece 201 and separates from the resistance piece 201.

[0051] In the embodiment of the present disclosure, when the motor is working, the rotor 20 rotates in the shell 10. The armature 101 is movably connected to the shell 10, and the resistance piece 201 and the winding 202 are arranged on the rotor 20. In this way, when the motor is working normally, the resistance piece 201 and the winding 202 rotate with the rotor 20. When the motor needs to be braked, the winding 202 is powered on, and the winding 202 generates a magnetic field. In this way, the armature 101 movably connected to the shell 10 is attracted by the magnetic force of the winding 202 and moves towards the rotor 20. Since the armature 101 is arranged in correspondence with the resistance piece 201, when the armature 101 moves to contact the resistance piece 201, the armature 101 and the resistance piece 201 are adsorbed together, which can limit the rotation of the rotor 20, so as to realize the braking of the motor. When it is needed to release the braking, the winding 202 is powered off, so that the winding 202 has no magnetic field, the armature 101 is not affected by the magnetic force, and the armature 101 separates from the resistance piece 201. In this way, the armature 101 no longer limits the rotor 20, and the motor can work normally. The motor of the embodiment of the present disclosure reasonably utilizes the space in the shell 10, and arranges the armature 101 and the resistance piece 201 at least one end of the rotor 20 in the axial direction. In this way, the braking of the rotor 20 can be realized, and the size of the motor is not increased. Moreover, the structure is simple, and the cost is low. When it is needed to replace the resistance piece 201 or the armature 101, the shell 10 only needs to be disassembled for operation, so that the operation is convenient.

[0052] Optionally, the resistance piece 201 is connected to the rotor, so that when the resistance piece contacts the armature to brake, the resistance piece can drive the rotor to stop rotating to realize the braking. Optionally, the resistance piece 201 is detachably connected or fixedly connected to the rotor.

[0053] Optionally, the winding refers to a coil group wound by a wire. The wire is a copper wire or an aluminum wire.

[0054] Optionally, the resistance piece 201 is fixedly connected to the rotor. For example, the resistance piece and the rotor can be welded or have an integrated structure. In this way, the connection strength between the resistance piece and the rotor is improved, and the braking effect is improved.

[0055] In some optional embodiments, the motor further comprises an elastic piece 102, the elastic piece 102 is connected between the armature 101 and the shell 10, the armature 101 is fixed in the shell 10 through the elastic piece 102, and the elastic piece 102 can be elastically deformed to enable the armature 101 to move relative to the shell 10.

[0056] In the embodiment of the present disclosure, the armature 101 is movably connected with the shell 10 through the elastic member 102, so that when the armature 101 is moved towards the rotor 20 by the magnetic force of the winding 202, the elastic member 102 is elastically deformed, so that the elastic member 102 does not affect the movement of the armature 101 towards the resistance member 201, and the armature 101 is always connected with one end of the shell 10, so that the rotor 20 can be braked. When the winding 202 is powered off, the armature 101 is not attracted by the magnetic force of the winding 202, and the armature 101 is moved away from the resistance member 201 under the action of the elastic member 102, so that the armature 101 is separated from the resistance member 201, so that the brake can be released, and the armature 101 can return to the initial position, avoiding the influence of the armature 101 on the rotation of the rotor 20.

[0057] Optionally, the elastic member 102 is a spring or a leaf spring.

[0058] Optionally, the number of elastic members 102 is multiple, and the multiple elastic members 102 are connected between the shell 10 and the armature 101 along the circumference of the armature 101.

[0059] In the embodiment of the present disclosure, multiple elastic members 102 are arranged between the armature 101 and the shell 10, which can improve the connection stability of the armature 101, and the multiple elastic members 102 are connected along the circumference of the armature 101, which can improve the stress of the armature 101 returning to the initial position, and ensure that the armature 101 is uniformly stressed, so that the armature 101 returns to the initial position and avoids affecting the rotation of the rotor 20,

[0060] In other optional embodiments, the motor includes an electric telescopic rod, and the shell 10 and the armature 101 are connected through the electric telescopic rod. When the winding 202 is powered on, the telescopic rod is elongated, and the armature 101 is connected with the resistance member 201. When the winding 202 is powered off, the telescopic rod is retracted to drive the resistance member 201 to return to the initial position.

[0061] Optionally, the electric telescopic rod can be powered off when the winding 202 is powered on, so that when the armature 101 is moved towards the rotor 20 by the magnetic force, the telescopic rod is elongated under the driving of the armature 101. When the winding 202 is powered on, the electric telescopic rod can also be powered on and elongated, and the armature 101 is moved towards the resistance member 201 under the double forces of the telescopic rod and the winding 202, so that the brake can be quickly braked, and the cooperation accuracy of the armature 101 and the resistance member 201 is improved.

[0062] Optionally, the winding 202 is arranged at one end of the rotor 20 facing the armature 101. In this way, when the winding 202 is electrified, the winding 202 can attract the armature 101 to move towards the end of the rotor 20 in the axial direction, and contact the resistance element 201 arranged at the end of the rotor 20 in the axial direction, thereby ensuring the accuracy of the movement path of the armature 101 and the accuracy of the contact between the armature 101 and the resistance element 201.

[0063] Optionally, the winding 202 is arranged at one end of the rotor 20 facing the armature 101, and the resistance element 201 is arranged on the surface of the winding 202 facing the armature 101.

[0064] In the embodiment of the present disclosure, when the winding 202 is electrified, the winding 202 can attract the armature 101 to move towards the winding 202, and the resistance element 201 is arranged on the surface of the winding 202 facing the armature 101. In this way, when the armature 101 moves towards the winding, the armature 101 can contact the resistance element 201 on the surface of the winding 202, so that the armature 101 is not affected by other components to ensure the contact between the armature 101 and the resistance element 201. Moreover, the winding 202 is arranged at one end of the rotor 20 facing the armature 101, which can ensure the accuracy of the movement path of the armature 101 and the accuracy of the contact between the armature and the resistance element 201, and avoid the change of the movement path of the armature 101.

[0065] Optionally, the resistance element 201 is protrudingly arranged on one side of the winding 202 facing the armature 101. In this way, when the armature 101 moves towards the winding 202, the armature 101 can be connected to the resistance element 201 protrudingly arranged on the winding 202 in priority, so that the armature 101 is not affected by other components to ensure the contact between the armature 101 and the resistance element 201.

[0066] Optionally, the resistance element 201 can also be flush with the winding 202. In this way, when the armature 101 moves to the winding 202, the armature 101 can also contact and brake the resistance element 201.

[0067] Optionally, the resistance element 201 and the winding 202 are arranged at one end of the rotor 20 facing the armature 101. In this way, when the armature 101 is attracted by the magnetic force of the winding 202 to move towards the winding 202, the armature 101 can also contact the resistance element 201.

[0068] Optionally, as shown in Figure 6 the winding 202 is arranged in a ring shape along the circumference of the rotor 20, wherein the winding 202 is provided with a through hole, one end of the resistance element 201 is connected to the rotor 20, the resistance element 201 passes through the through hole, and the other end of the resistance element 201 protrudes from the winding 202.

[0069] In the embodiment of the present disclosure, the winding 202 is arranged in a ring shape along the circumference of the rotor 20, which can ensure the area of the winding 202, and further ensure the magnetic force of the winding 202 after being electrified to attract the armature 101 to move. Meanwhile, one end of the resistance piece 201 is fixedly connected with the rotor 20, and the resistance piece 201 can further protrude from the through hole of the winding 202 to the end face of the winding 202 facing the armature 101, so that the arrangement of the resistance piece 201 and the winding 202 can not only ensure the magnetic force, but also ensure the contact accuracy of the resistance piece 201 and the armature 101.

[0070] Optionally, the number of the resistance pieces 201 is multiple, and the multiple resistance pieces 201 are sequentially and spacedly arranged along the circumference of the rotor 20.

[0071] In the embodiment of the present disclosure, the number of the resistance pieces 201 is multiple, which can increase the contact area of the resistance piece 201 and the armature 101, and improve the braking capacity. Since the rotor 20 rotates along the circumference, the multiple resistance pieces 201 are sequentially and spacedly arranged along the circumference of the rotor 20, so that the force can be applied at multiple points along the circumference of the rotor 20 to brake, which can improve the braking effect and the braking speed to achieve rapid braking.

[0072] Optionally, when the number of the resistance pieces 201 is multiple, the winding 202 is provided with multiple through holes, and the number of the through holes is the same as and corresponds to the number of the resistance pieces 201. In this way, the arrangement area of the winding 202 can be ensured, and the area of the resistance piece 201 can be increased, and when the winding 202 attracts the armature 101 to move, the armature 101 can accurately contact the resistance piece 201.

[0073] Optionally, the width of the resistance piece 201 gradually increases along the direction from the center of the rotor 20 to the outer circumferential wall of the rotor 20. In the embodiment of the present disclosure, the resistance piece 201 changes with the shape of the axial end of the rotor 20, so that the arrangement area of the winding 202 in the radial direction of the axial end of the rotor 20 can be ensured, and the area of the resistance piece 201 can also be ensured.

[0074] Optionally, the winding can be one or multiple, when the winding is one, the winding matches the axial end of the rotor, and when the winding is multiple, the multiple windings are sequentially arranged along the axial end of the rotor.

[0075] Optionally, as shown in FIG. 1, the resistance piece 201 is a friction plate. Figures 1 to 6

[0076] In the embodiment of the present disclosure, when the resistance piece 201 is a friction plate, when the armature 101 contacts the resistance piece 201, the wall surface of the armature 101 facing the rotor contacts the wall surface of the friction plate 201 facing the armature, and braking is performed through contact friction. In this way, when the resistance piece is a friction plate, the friction plate is simple to process and easy to install.

[0077] ​Optionally, when the armature 101 is in contact with the resistance piece 201 to brake, the armature 101 is clamped with the resistance piece 201, so that the armature 101 and the resistance piece 201 are limited and braked in the direction of rotation of the rotor, and rapid braking can be achieved.

[0078] Optionally, as shown in FIG. 6, the surface of the armature 101 facing the rotor 20 is provided with a groove 206, and when the armature 101 moves towards the rotor 20, the resistance piece 201 is clamped with the armature 101 to brake; or, as shown in FIG. 7, the surface of the resistance piece 201 facing the armature 101 is provided with a groove 206, and when the armature 101 moves towards the rotor 20, the resistance piece 201 is clamped with the armature 101 to brake. Figure 7 Figure 8 Optionally, as shown in FIG. 6, the surface of the armature 101 facing the rotor 20 is provided with a groove 206, and when the armature 101 moves towards the rotor 20, the resistance piece 201 is clamped with the armature 101 to brake; or, as shown in FIG. 7, the surface of the resistance piece 201 facing the armature 101 is provided with a groove 206, and when the armature 101 moves towards the rotor 20, the resistance piece 201 is clamped with the armature 101 to brake.

[0079] In the embodiment of the present disclosure, the surface of the armature 101 facing the rotor 20 is provided with a groove 206, so that when the armature 101 moves towards the winding 202, the resistance piece 201 can be inserted into the groove 206 to realize clamping of the armature 101 and the resistance piece 201. Since the armature 101 is connected with the shell 10, when the armature 101 is clamped with the resistance piece 201, the armature 101 can limit the rotation of the resistance piece 201 and the rotor 20, and the resistance piece 201 and the armature 101 cannot move relatively, so that the rotor 20 can be rapidly braked, and the braking speed and braking efficiency are improved. Alternatively, the surface of the resistance piece 201 facing the armature 101 is provided with a groove 206, so that when the armature 101 moves towards the winding 202, the armature 101 can be inserted into the groove 206 to realize clamping of the armature 101 and the resistance piece 201, so that the limiting effect of the armature 101 and the resistance piece 201 can also be improved, and the braking speed and braking efficiency are improved.

[0080] Optionally, when the surface of the armature 101 facing the rotor 20 is provided with a groove 206, the end of the resistance piece facing the armature matches the groove 206, or the resistance piece 201 includes a clamping protrusion, and when the resistance piece is clamped with the armature 101 to brake, the clamping protrusion is located in the groove 206.

[0081] In the embodiment of the present disclosure, the end of the resistance piece 201 facing the armature 101 matches the groove 206, so that when the resistance piece 201 is clamped with the armature 101 to brake, the end of the resistance piece 201 facing the armature 101 can be inserted into the groove 206 to realize clamping of the resistance piece 201 and the armature 101. Alternatively, the resistance piece 201 is provided with a clamping protrusion, and the clamping protrusion can be inserted into the groove 206, so that the size of the groove 206 can be reduced, and the strength of the resistance piece is ensured.

[0082] Optionally, when the surface of the resistance piece 201 facing the armature 101 is provided with a groove 206, the end of the armature facing the rotor matches the groove 206, or the armature includes a clamping protrusion, and when the resistance piece is clamped with the armature to brake, the clamping protrusion is located in the groove 206.​

[0083] In the embodiment of the present disclosure, the end of the rotor towards which the armature 101 is matched with the groove 206, so that when the resistance member is clamped with the armature, the end of the rotor towards which the armature is matched can be inserted into the groove 206, so as to realize the clamping of the resistance member and the armature. Alternatively, the armature is provided with a clamping protrusion which can be inserted into the groove, so that the size of the groove can be reduced, thereby ensuring the strength of the armature.

[0084] Optionally, the number of the grooves 206 is one or more. When the number of the grooves 206 is more, the plurality of grooves 206 are sequentially and spacedly arranged along the circumference of the rotor, or the plurality of grooves 206 are spacedly arranged along the radial direction of the rotor. Wherein, when the number of the grooves 206 is more, the number of the resistance members or the armatures clamped with the grooves is the same as and corresponds to the number of the grooves 206, or the number of the clamping protrusions clamped with the grooves is the same as and corresponds to the number of the grooves 206.

[0085] Optionally, the motor further comprises a rotating shaft 40 which extends along the axial direction of the rotor 20 and penetrates the casing 10. Here, the two ends of the rotating shaft 40 respectively extend to the outside of the two ends of the casing 10 in the axial direction, the rotor 20 is sleeved on the outside of the rotating shaft 40 and is fixedly connected with the rotating shaft 40, and the rotating shaft 40 can drive the rotor 20 to rotate synchronously. Wherein, at least one of the armature 101, the winding 202 and the resistance member 201 is arranged on the outside of the rotating shaft 40 along the circumferential direction of the rotating shaft 40.

[0086] In the embodiment of the present disclosure, the rotating shaft 40 penetrates the casing 10 and is fixedly connected with the rotor 20, so that the rotating shaft 40 can rotate with the rotor 20. At least one of the armature 101, the winding 202 and the resistance member 201 is arranged on the outside of the rotating shaft 40 along the circumferential direction of the rotating shaft 40, so that the working of the armature 101, the winding 202 and the resistance member 201 will not interfere with the rotation of the rotating shaft 40, and the braking can be performed in the circumferential direction, thereby improving the braking efficiency.

[0087] Optionally, the number of the armatures 101 is more, and the plurality of armatures 101 are spacedly arranged along the circumferential direction of the rotating shaft; or, as shown in the figure, the armature 101 is of an integral structure, and the armature 101 is spacedly sleeved on the outside of the rotating shaft 40. Figure 5

[0088] ​In the embodiments of the present disclosure, the armatures 101 can be provided in plurality, and the plurality of armatures 101 are arranged at intervals in the circumferential direction of the rotating shaft 40, so that the contact area of the armatures 101 with the resistance pieces 201 in the circumferential direction can be increased, and the braking force in the circumferential direction can be increased, and the braking speed of the rotor can be increased. Alternatively, the armature 101 is of an integral structure, so that when the armature 101 is moved towards the rotor 20 by the magnetic force of the winding 202, the armature 101 as a whole can be moved towards the rotor 20, and the problem that the armature 101 is out of synchronization due to the plurality of armatures 101 can be avoided, and the problem that the braking effect is poor can be avoided. The armatures 101 are arranged at intervals on the outer side of the rotating shaft 40, that is, the armatures 101 are not in contact with the rotating shaft 40, so that when the armatures 101 are moved by the magnetic force in the axial direction of the rotating shaft 40 towards the winding 202, the rotation of the rotating shaft 40 can not be affected.

[0089] Alternatively, in the axial direction of the machine housing 10, the projection area of the armature 101 on the machine housing 10 is greater than or equal to the projection area of the rotor 20.

[0090] In the embodiments of the present disclosure, since the resistance pieces 201 are arranged at the axial ends of the rotor 20, in the axial direction of the machine housing 10, the projection area of the armature 101 on the machine housing 10 is greater than or equal to the projection area of the rotor 20, so that the area of the armature 101 is also greater than the area of the resistance piece 201, so that the contact area of the armature 101 with the resistance piece 201 can be ensured, and the armature 101 can be in contact with all the resistance pieces 201.

[0091] Alternatively, the number of the rotors 20 is plurality, and the plurality of rotors 20 are arranged at intervals in the axial direction of the rotating shaft 40 on the outer side of the rotating shaft 40, and the plurality of rotors 20 at least include a first rotor 203 and a second rotor 204, and the first rotor 203 and the second rotor 204 are respectively located at the two axial ends of the rotating shaft 40; wherein one end of the first rotor 203 away from the second rotor 204 and / or one end of the second rotor 204 away from the first rotor 203 is provided with the resistance piece 201 and the winding 202, and the machine housing 10 is provided with the armature 101 corresponding to the resistance piece 201 and the winding 202.

[0092] In the embodiments of the present disclosure, when the motor is provided with the plurality of rotors 20, the first rotor 203 and the second rotor 204 located at the two axial ends of the rotating shaft 40 are both provided with the resistance piece 201 and the winding 202, and the machine housing 10 corresponding to the first rotor 203 and the second rotor 204 is also provided with the armature 101, so that the first rotor 203 and the second rotor 204 can be braked by the armature 101, the resistance piece 201 and the winding 202, and when the motor needs to be braked, the armature 101 corresponding to the first rotor 203 and the second rotor 204 is moved and contacted with the resistance piece 201 corresponding to the armature 101, so that the rotors 20 at the two axial ends of the rotating shaft 40 are braked, and the rotors 20 and the rotating shaft 40 can be quickly braked, and the braking speed can be increased.

[0093] Optionally, the motor further comprises an electronic, and the stator 30 is sleeved outside the rotating shaft 40 and is located between two adjacent rotors 20; wherein the stator 30 is etched with copper coils 301.

[0094] In the embodiment of the present disclosure, the motor forms a structure of double rotors 20 clamping a stator 30, and the stator 30 is etched with copper coils 301, so that when the current passes through the copper coils 301 of the stator 30, a force will be generated in the magnetic field of the stator 30, thereby driving the rotor 20 to rotate. Thus, compared with the traditional motor, the stator 30 iron core is not required to be arranged, thereby avoiding the iron core loss, and there is no tooth slot effect and torque fluctuation, which greatly improves the efficiency of the motor. In addition, the stator 30 is etched with copper coils 301, which not only reduces the use of materials, but also reduces the hysteresis loss and eddy current loss in the stator 30. The motor of the embodiment of the present disclosure does not need to arrange the stator 30 iron core, and the winding 202, the resistance piece 201 and the connection are located in the shell 10, so that the volume of the motor is small and the weight is light, thereby the motor can be widely applied to electronic products such as household appliances and robots, and the use versatility is improved. And through the winding 202, the resistance piece 201 and the connection, the brake function is increased, so that the use of the motor is more efficient, stable and safe, and the noise can be reduced. In addition, since the stator 30 does not need to arrange the stator 30 iron core, the stator 30 is etched with copper coils 301, so that the thermal expansion coefficient of the stator 30 is close to the material itself, and therefore no significant thermal stress will be generated when the temperature changes, which solves the problem of cracking of the insulation layer caused by the inconsistent thermal expansion of the materials of the traditional motor. The motor of the embodiment of the present disclosure can operate more stably in high temperature and harsh environment.

[0095] Optionally, the rotor 20 is wedge-shaped, and the rotor 20 is a magnet. In this way, the output power of the motor can be effectively enhanced.

[0096] Optionally, the rotor 20 adopts a magnet with high magnetic energy product and high coercive force, such as 45UH, 48UH, etc., which can still maintain stable performance in a high temperature environment.

[0097] Optionally, a first bearing 302 is arranged between the stator 30 and the rotating shaft 40. In this way, the friction coefficient between the stator 30 and the rotating shaft 40 can be reduced, so as to reduce the vibration and swing of the rotating shaft 40.

[0098] Optionally, the motor further comprises a bearing (hereinafter referred to as a second bearing 103 for ease of description) connected between the casing 10 and the rotor 20, and the armature 101 is arranged outside the second bearing 103, wherein one end of the second bearing 103 is connected to the casing 10, and the other end of the second bearing 103 extends to the rotor 20. In this way, the inner layer of the second bearing 103 is driven to rotate by the rotating shaft 40, and the outer layer of the second bearing 103 is connected to the casing 10, thereby reducing the friction coefficient between the casing 10 and the rotating shaft 40.

[0099] Optionally, the other end of the second bearing 103 is arranged outside the rotor 20, so that the rotor 20 rotates without interfering with the second bearing.

[0100] Optionally, the inner wall of the casing 10 is recessed in a direction away from the rotor 20 to form a recess, and one end of the second bearing 103 is located in the recess.

[0101] Optionally, the motor further comprises a permanent magnet 205 arranged on the side of the rotor 20 facing the stator 30.

[0102] In the embodiments of the present disclosure, the permanent magnet 205 is arranged on the side of the rotor 20 facing the stator 30, so that the permanent magnet 205 can generate a constant magnetic field, thereby increasing the magnetic field strength of the motor, achieving higher output power, improving the power density of the motor, and allowing the motor to achieve greater output power under the same size. Moreover, the volume of the motor can be greatly reduced to realize the miniaturization of the motor. In addition, due to the small size and light weight of the permanent magnet 205, it is suitable for miniaturization and light weight applications.

[0103] Optionally, the permanent magnet comprises a magnetic steel. Here, the magnetic steel comprises ferrite, neodymium iron boron, and samarium cobalt. As a permanent magnet, the magnetic steel has good stability and can provide a long-term stable magnetic field without the need for an external power supply. Moreover, the magnetic steel has a small size and light weight, and will not increase the size of the motor, thereby realizing the miniaturization of the motor.

[0104] The embodiments of the present disclosure also provide an air conditioner comprising the motor according to any one of the above embodiments.

[0105] The air conditioner provided by the embodiments of the present disclosure has the beneficial effects of the motor according to any one of the above embodiments, and thus the detailed description is omitted here.

[0106] Optionally, the motor can be applied to electrical devices such as compressors and fans of air conditioners.

[0107] The above description and drawings suffice to fully enable one skilled in the art to practice the embodiments of the present disclosure. Other embodiments can include structural and other changes. The embodiments are merely representative of possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and can be varied in a variety of ways. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. An electric machine characterized in that, The electric machine comprises: a housing; a rotor rotating in the housing; an armature arranged in the housing and movably connected with the housing, the armature being located at least at one end of the rotor in the axial direction; a resistance element connected between the rotor and the armature and corresponding to the armature; a winding arranged in the rotor; wherein when the winding is powered, the winding generates a magnetic field, the armature moves towards the resistance element under the magnetic force of the winding and contacts the resistance element to brake; when the winding is powered off, the armature moves away from the resistance element and separates from the resistance element.

2. The electric machine of claim 1, wherein, Further comprising: a resilient element connected between the armature and the housing, the armature being fixed in the housing through the resilient element, and the resilient element being capable of elastic deformation so that the armature can move relative to the housing.

3. The electric machine according to claim 1, wherein the winding is arranged at one end of the rotor facing the armature, and the resistance element is arranged on the surface of the winding facing the armature.

4. The electric machine of claim 1, wherein, The resistance element is a friction plate; or the surface of the armature facing the rotor is provided with a groove, and when the armature moves towards the rotor, the resistance element is clamped with the armature to brake; or the surface of the resistance element facing the armature is provided with a groove, and when the armature moves towards the rotor, the resistance element is clamped with the armature to brake.

5. The electric machine according to claim 1, wherein the winding is arranged in a ring shape along the circumference of the rotor, wherein the winding is provided with a through hole, one end of the resistance element is connected with the rotor, the resistance element passes through the through hole, and the other end of the resistance element protrudes from the winding.

6. The electric machine according to claim 1, wherein the number of resistance elements is multiple, and the multiple resistance elements are arranged in sequence and spaced apart along the circumference of the rotor; and / or the width of the resistance element gradually increases along the direction from the center of the rotor to the outer circumferential wall of the rotor.

7. The electric machine of claim 1, wherein, Further comprising: a rotating shaft extending along the axial direction of the rotor and penetrating through the housing, the rotor being sleeved on the outside of the rotating shaft and fixedly connected with the rotating shaft, and the rotating shaft can drive the rotor to rotate synchronously; the number of armatures is multiple, and the multiple armatures are arranged in sequence and spaced apart along the circumference of the rotating shaft; or the armatures are in an integrated structure and are arranged in sequence and spaced apart on the outside of the rotating shaft.

8. The electric machine according to claim 7, wherein the number of rotors is multiple, and the multiple rotors are arranged in sequence and spaced apart on the outside of the rotating shaft along the axial direction of the rotating shaft, and the multiple rotors at least include a first rotor and a second rotor, the first rotor and the second rotor being located at two ends of the rotating shaft in the axial direction respectively; wherein one end of the first rotor away from the second rotor and / or one end of the second rotor away from the first rotor is provided with a resistance element and a winding, and the housing is provided with an armature corresponding to the resistance element and the winding.

9. The electric machine according to any one of claims 1 to 8, wherein in the axial direction of the housing, the projection area of the armature on the housing is greater than or equal to the projection area of the rotor.

10. An air conditioner characterized by comprising: The air conditioner comprises the electric machine according to any one of claims 1 to 9.

Images