Motor with vibration and noise reduction structure

Abstract

The utility model relates to the technical field of motors, and provides a motor with a vibration and noise reduction structure, which comprises a casing and a stator assembly, vibration reduction rubber rings are arranged between the casing and the stator assembly, a plurality of parallel annular grooves are arranged on the inner wall of the casing, the vibration reduction rubber rings are mounted in the annular grooves, and the shapes of the annular grooves are matched with those of the vibration reduction rubber rings. The damping rubber ring is additionally arranged between the casing and the stator core, so that the intensity of vibration transmitted from the stator core to the casing is reduced, the vibration noise of the motor is reduced, and the use performance of the motor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, especially a motor with vibration and noise reduction structure. BACKGROUND

[0002] The existing permanent magnet motor shell and stator assembly adopt the hot jacket mode to assemble, and the stator core and the shell are directly contacted, the motor winding is electrified and will produce the radial magnetic pull, and the cogging torque of the motor itself, all will cause the vibration and noise of the permanent magnet motor, the vibration produced is transmitted to the shell through the stator core, when the electromagnetic frequency is consistent with the inherent frequency of the shell, resonance will also be produced, seriously influence the performance and service life of the motor.

[0003] Therefore, it is urgent to provide a structure capable of reducing the vibration and noise between the shell and the stator core. UTILITY MODEL CONTENTS

[0004] In order to solve the above-mentioned problems in the prior art, the utility model provides a motor with vibration and noise reduction structure, which comprises a shell, a stator assembly, a damping rubber ring arranged between the shell and the stator assembly, a plurality of parallel annular grooves formed in the inner wall of the shell, and a damping rubber ring installed in the annular groove, wherein the shape of the annular groove matches that of the damping rubber ring.

[0005] Further, the damping rubber ring and the stator core are assembled by the hot jacket mode.

[0006] Further, the stator assembly comprises a stator core, an insulation framework and a winding, the insulation framework is installed on the two end faces of the stator core, and the winding is wound around the stator core and the insulation framework.

[0007] Further, the stator core comprises a first circular ring part and a plurality of tooth parts installed on the inner circle of the first circular ring part; the tooth parts are provided with winding holes, and the winding holes are provided with insulation paper matched with the shape of the winding hole.

[0008] Further, the tooth part is provided with a first mounting part;

[0009] The stator assembly further comprises a core circular ring, and the core circular ring comprises a second circular ring part and a second mounting part arranged on the outer circle of the second circular ring part.

[0010] The first mounting part and the second mounting part are matched in shape, so that the inner circle of the stator core forms a structure without a notch, and the insulation framework is installed on the stator core for winding.

[0011] Further, the first mounting part is a groove at the bottom end of the tooth part, and the second mounting part is a protrusion on the outer circle of the core circular ring.

[0012] Further, the first mounting part is the bottom end of the tooth part, and the second mounting part is a groove on the outer circle of the core circular ring.

[0013] Further, the first mounting portion is a protrusion arranged at the bottom end of the tooth portion, and the second mounting portion is a groove arranged on the outer circle of the core ring.

[0014] Further, the protrusion is a trapezoidal protrusion connected to the bottom end of the tooth portion, the lower base of the trapezoidal protrusion is fixed to the bottom side of the tooth portion, the upper base of the trapezoidal protrusion is arranged in a direction away from the tooth portion of the stator core, and the second mounting portion is a groove matched with the trapezoidal protrusion on the outer circle of the core ring.

[0015] Compared with the prior art, the motor with the vibration and noise reduction structure increases the damping rubber ring between the shell and the stator core, reduces the vibration intensity transmitted from the stator core to the shell, reduces the vibration noise of the motor, and improves the use performance of the motor.

[0016] Other features and advantages of the present application will be described in the following description, and some of them will become apparent from the description, or will be understood from the practice of the present application. The purpose and other advantages of the present application can be achieved and obtained by the structure specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings. In the following description, the positional relationship described in the drawings is the direction of the components shown in the drawings as the reference if not specially indicated.

[0018] Figure 1 Structure schematic view of the motor with the vibration and noise reduction structure provided by the embodiment one of the present application;

[0019] Figure 2 Structure schematic view of the shell provided by the embodiment one of the present application;

[0020] Figure 3 Structure schematic view of the damping rubber ring provided by the embodiment one of the present application;

[0021] Figure 4 Structure schematic view of the stator assembly provided by the embodiment one of the present application;

[0022] Figure 5 Structure schematic view of the stator assembly without the stator core and part of the winding provided by the embodiment one of the present application;

[0023] Figure 6The structure schematic view of the motor stator structure provided by the second embodiment of the utility model;

[0024] Figure 7 The structure schematic view of the motor stator structure provided by the second embodiment of the utility model from another perspective;

[0025] Figure 8 The structure schematic view of the motor stator structure provided by the second embodiment of the utility model from another perspective;

[0026] Figure 9 The front structure schematic view of the motor stator structure provided by the third embodiment of the utility model;

[0027] Figure 10 The front structure schematic view of the stator core provided by the third embodiment of the utility model;

[0028] Figure 11 The structure schematic view of the stator core provided by the third embodiment of the utility model;

[0029] Figure 12 The front structure schematic view of the iron core ring provided by the third embodiment of the utility model;

[0030] Figure 13 The structure schematic view of the iron core ring provided by the third embodiment of the utility model from another perspective;

[0031] Figure 14 The front structure schematic view of the stator core provided by the third embodiment of the utility model;

[0032] Figure 15 The front structure schematic view of the iron core ring provided by the third embodiment of the utility model;

[0033] Figure 16 The front structure schematic view of the stator core provided by the fourth embodiment of the utility model;

[0034] Figure 17 The front structure schematic view of the iron core ring provided by the fourth embodiment of the utility model;

[0035] Figure 18 The front structure schematic view of the stator core provided by the fourth embodiment of the utility model;

[0036] Figure 19 The front structure schematic view of the stator core provided by the fourth embodiment of the utility model.

[0037] The figure mark: the casing 10, the stator assembly 20, the stator core 21, the first circular ring part 211, the tooth part 212, the first mounting part 213, the core circular ring 22, the second circular ring part 221, the second mounting part 222, the recess 23, the convex 24, the winding 25, the insulation framework 26, the insulation paper 27, the damping rubber ring 30, the annular recess 40. DETAILED DESCRIPTION

[0038] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. The technical features designed in different embodiments of the utility model can be combined with each other as long as they do not conflict with each other. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0039] In the description of the utility model, it should be noted that all the terms (including technical terms and scientific terms) used by the utility model have the same meaning as that generally understood by the ordinary skilled in the art to which the utility model belongs, and should not be understood as a limitation on the utility model. It should be further understood that the terms used by the utility model should be understood as having the same meaning as the meaning of these terms in the context of the specification and the related field, and should not be understood in an idealized or overly formal sense, except as explicitly defined in the utility model.

[0040] Embodiment one

[0041] The utility model provides a kind of motor with vibration and noise reduction structure, as shown in Figure 1 Including casing 10, stator assembly 20, damping rubber ring 30 is provided between casing 10 and stator assembly 20, as shown in Figure 2 The inner wall of casing 10 is provided with a plurality of parallel annular recesses 40, and the damping rubber ring 30 is installed in the annular recess 40, as shown in Figure 3 The shape of the annular recess 40 matches the shape of the damping rubber ring 30.

[0042] Specifically, the motor with vibration and noise reduction structure includes casing 10, stator assembly 20, damping rubber ring 30, annular recess 40 is opened in the inner circle of casing 10, the shape of annular recess 40 matches damping rubber ring 30, damping rubber ring 30 is fixedly installed in the recess, stator assembly 20 is assembled by hot-joint with casing 10, damping rubber ring 30 has certain contact extrusion with stator core 21, so that damping rubber ring 30 plays a damping effect.

[0043] In the embodiment, the number of the annular grooves 40 is two; it is to be noted that the number of the annular grooves 40 is not limited to two, and can be determined according to the damping effect.

[0044] Preferably, the outer surface of the casing 10 is further provided with a plurality of heat dissipation ribs.

[0045] In an embodiment, as shown in the figure, Figure 4 the stator assembly 20 comprises a stator core 21, an insulating framework and a winding 25, the insulating framework is installed on the two end faces of the stator core 21, and the winding 25 is wound on the stator core 21 and the insulating framework.

[0046] Further, the stator core 21 comprises a first annular portion 211 and a plurality of tooth portions 212 installed on the inner circle of the first annular portion 211; the tooth portions 212 are formed with wire winding holes, and the wire winding holes are provided with insulating paper 27 matched with the shape of the wire winding holes. Specifically, as shown in the figure, Figure 3 the winding 25 is isolated from the stator core 21 through the insulating framework and the insulating paper 27.

[0047] Embodiment two

[0048] The integral stator core 21 of the inner winding type is provided with a notch, the permanent magnet of the permanent magnet motor and the tooth slot of the stator core 21 interact to generate a tooth slot torque, the tooth slot torque will cause a torque ripple of the permanent magnet motor, the torque ripple will also cause vibration and noise of the motor, when the frequency of the torque ripple is consistent with the current resonance frequency, resonance will be generated, which seriously affects the positioning accuracy and performance of the motor.

[0049] To solve the above technical problems, the utility model provides a kind of stator assembly 20, and the tooth portion 212 of stator core 21 is provided with first installation portion 213;Core annular ring 22 includes second annular portion 221 And second installation portion 222 being arranged to the outer circle of second annular portion 221;First installation portion 213 and second installation portion 222 shape are embedded, to make the structure of the inner circle of stator core 21 without notch, and insulating framework 26 is installed in stator core 21 and is wired.

[0050] Specifically, the utility model forms a notch-free stator core 21 by the first installation portion 213 and the second installation portion 222 which can be embedded after winding of the stator, effectively reduces the tooth slot torque and torque ripple of the motor, and improves the overall practicability of the motor.

[0051] Embodiment three

[0052] In the embodiment, as shown in the figure, Figures 6 to 9 the first installation portion 213 is the groove 23 of the inner circle tooth portion 212 of the stator core 21, and the second installation portion 222 is the protrusion 24 of the outer circle of the core annular ring 22.

[0053] Specifically, the stator assembly 20 comprises a stator core 21, a core ring 22 and an insulation skeleton 26. The inner circle of the stator core 21 has a tooth portion 212 with a groove 23. The outer circle of the core ring 22 has a protrusion 24. The protrusion 24 of the core ring 22 is combined with the groove 23 of the stator core 21 to form a complete stator core 21. The core ring 22 and the stator core 21 are fixed by clamping, screwing or gluing. After combination, the inner circle of the stator core 21 forms a structure without a notch. The insulation skeleton 26 is installed on the stator core 21 for winding.

[0054] In an embodiment, as shown in Figure 10 , Figure 11 , Figure 12 and Figure 13 , the groove 23 is in the shape of a hemisphere, and the protrusion 24 is in the shape of a hemisphere adapted to the groove 23.

[0055] In an embodiment, as shown in Figure 14 and Figure 15 , the groove 23 is in the shape of a triangle, and the protrusion 24 is in the shape of a triangle adapted to the groove 23.

[0056] Alternatively, the groove 23 can be in the shape of a triangle, a hemisphere, and an irregular shape with an opening. The protrusion 24 is in the shape of a triangular protrusion, a hemispherical protrusion, and an irregular protrusion adapted to the groove 23.

[0057] Embodiment Four

[0058] In this embodiment, the first mounting portion 213 is the tooth portion 212 of the stator core 21. Different shaped protrusions 24 can also be provided at the bottom end of the tooth portion 212. The second mounting portion 222 is the groove 23 of the outer circle of the core ring 22.

[0059] Specifically, the stator assembly 20 comprises a stator core 21, a core ring 22 and an insulation skeleton 26. The outer circle of the core ring 22 has a groove 23. The groove 23 of the core ring 22 is combined with the tooth portion 212 of the stator core 21 or the protrusion 24 at the bottom end of the tooth portion 212 of the stator core 21 to form a complete stator core 21. The core ring 22 and the stator core 21 are fixed by clamping, screwing or gluing. After combination, the inner circle of the stator core 21 forms a structure without a notch. The insulation skeleton 26 is installed on the stator core 21 for winding.

[0060] In an embodiment, as shown in Figure 16 , Figure 17 and Figure 18 , the first mounting portion 213 is the tooth portion 212, and the second mounting portion 222 is the groove 23 of the outer circle of the core ring 22. The groove 23 is adapted to the bottom end of the tooth portion 212.

[0061] In an embodiment, as shown in Figure 19 the protrusion 24 is a trapezoidal protrusion, the lower base of the trapezoidal protrusion is fixed to the bottom edge of the tooth portion 212, and the upper base of the trapezoidal protrusion is arranged in a direction away from the tooth portion 212 of the stator core 21, and the second mounting portion 222 is a groove 23 matched with the trapezoidal protrusion on the outer circle of the core ring 22.

[0062] Preferably, the trapezoidal protrusion is an isosceles trapezoid. It should be noted that it is not limited to an isosceles trapezoid, but can also be a right trapezoid, and other trapezoids with different side length ratios. The slope of the two sides of the isosceles trapezoid can be smoothly aligned with the groove 23 of the core ring 22, facilitating installation.

[0063] Preferably, the lower base of the trapezoidal protrusion is the same width as the bottom edge of the tooth portion 212. The lower base of the trapezoidal protrusion is the same width as the bottom edge of the tooth portion 212, so that they can reduce the processing procedures during processing, similar to direct integrated molding. In addition, the same width of the bottom edge makes the overall area of the trapezoidal protrusion larger, and the trapezoidal protrusion is not easy to break when the motor vibrates violently, making the slotless structure more stable.

[0064] The utility model discloses a stator core 21 of slotless structure formed by the first mounting portion 213 and the second mounting portion 222 that can be embedded after the winding of the stator is completed, effectively reducing the cogging torque and torque ripple of the motor, and improving the overall practicality of the motor. At the same time, the damping rubber ring 30 is arranged between the casing 10 and the stator assembly 20, reducing the vibration intensity transmitted from the stator core 21 to the casing 10, reducing the vibration noise of the motor, and improving the use performance of the motor.

[0065] In addition, those skilled in the art should understand that although there are many problems in the prior art, each embodiment or technical solution of the utility model can only be improved in one or several aspects, and it is not necessary to solve all the technical problems listed in the prior art or background art at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be regarded as a limitation of the claim.

[0066] Although terms such as casing, stator assembly, damping rubber ring, annular groove, etc. are used more frequently in this document, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the utility model; any additional limitation is contrary to the spirit of the utility model; the terms "first", "second", etc. (if any) in the specification and claims of the utility model embodiments and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0067] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A motor with a vibration reduction and noise reduction structure, characterized in that: The application relates to a motor, which comprises a casing, a stator assembly, a damping rubber ring arranged between the casing and the stator assembly, and a plurality of parallel annular grooves formed in the inner wall of the casing and matched with the shape of the damping rubber ring.

2. The motor with vibration and noise reduction structure according to claim 1, characterized in that: The stator assembly comprises a stator core, an insulation framework and a winding, the insulation framework is arranged on the two end faces of the stator core, and the winding is wound on the stator core and the insulation framework.

3. The motor with vibration and noise reduction structure according to claim 2, characterized in that: The damping rubber ring and the stator core are assembled through hot fitting.

4. The motor with vibration and noise reduction structure according to claim 2, characterized in that: The stator core comprises a first annular part and a plurality of tooth parts arranged on the inner circle of the first annular part, the tooth parts are provided with winding holes, and the winding holes are provided with insulation paper matched with the shape of the winding holes.

5. The motor with vibration and noise reduction structure according to claim 4, characterized in that: The tooth part is provided with a first mounting part. The stator assembly further comprises a core annular part, which comprises a second annular part and a second mounting part arranged on the outer circle of the second annular part. The first mounting part and the second mounting part are matched in shape, so that the inner circle of the stator core forms a structure without notches, and the insulation framework is arranged on the stator core for winding.

6. The motor with vibration and noise reduction structure according to claim 5, characterized in that: The first mounting part is a groove at the bottom end of the tooth part, and the second mounting part is a protrusion on the outer circle of the core annular part.

7. The motor with vibration and noise reduction structure according to claim 5, characterized in that: The first mounting part is the bottom end of the tooth part, and the second mounting part is a groove on the outer circle of the core annular part.

8. The motor with vibration and noise reduction structure according to claim 5, characterized in that: The first mounting part is the bottom end of the tooth part, and the second mounting part is a groove on the outer circle of the core annular part.

9. The motor with vibration and noise reduction structure according to claim 8, characterized in that: The first mounting part is a protrusion arranged at the bottom end of the tooth part, and the second mounting part is a groove on the outer circle of the core annular part. The protrusion is a trapezoidal protrusion connected to the bottom end of the tooth part, the lower base of the trapezoidal protrusion is fixed to the bottom side of the tooth part, the upper base of the trapezoidal protrusion is arranged in a direction away from the tooth part of the stator core, and the second mounting part is a groove matched with the trapezoidal protrusion on the outer circle of the core annular part.

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