Non-plugging force motor

Abstract

The utility model discloses a non-plugging force motor, which comprises a rotor assembly and a stator assembly, the rotor assembly comprises a rotor ring, a ring groove is arranged in the rotor ring, a plurality of permanent magnet groups are arranged in the ring groove, gaps exist among the permanent magnet groups, and a rotating shaft is arranged in the rotor ring; the stator assembly comprises a coil winding which is coupled into a ring shape, a supporting sleeve is arranged in the coil winding, and when the rotor assembly and the stator assembly are assembled, the coil winding is inserted into a gap between the permanent magnet sets. According to the invention, the plurality of permanent magnet groups are arranged in the annular groove, so that the magnetic force between the permanent magnet groups is offset, and the coil winding is hardly interfered by the magnetic force when being plugged in and pulled out of the gap between the permanent magnet groups, so that the stator assembly and the rotor assembly are not obstructed by the magnetic force when being plugged in and pulled out for assembly, and the assembly efficiency of the stator assembly and the rotor assembly is improved. Therefore, assembly without insertion and extraction force is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor structure field, specifically speaking relates to a kind of plug-in forceless motor. BACKGROUND

[0002] In prior art, whether it is outer rotor motor or inner rotor motor, when assembling stator assembly and rotor assembly, it is difficult to separate once assembled, because no matter it is outer rotor motor or inner rotor motor, its rotor assembly is provided with permanent magnet, and the material of its stator assembly is mostly metal, so when stator assembly and rotor assembly are assembled, stator assembly is adsorbed by rotor assembly due to the magnetic force of permanent magnet, so that when it needs to be disassembled, it needs to be pulled apart with great force, which is time-consuming and laborious, and this phenomenon is particularly obvious in small and micro motor. SUMMARY

[0003] In order to solve the above problems, the utility model provides a kind of plug-in forceless motor, including rotor assembly and stator assembly, the rotor assembly includes rotor ring, ring groove is provided in the rotor ring, a plurality of permanent magnet groups are configured in the ring groove, there is gap in the permanent magnet group, and the inner of the rotor ring is provided with rotating shaft;The stator assembly includes coil winding coupled into a ring, a support sleeve is provided in the coil winding, when the rotor assembly and the stator assembly are assembled, the coil winding is inserted into the gap between the permanent magnet groups.

[0004] Further, the permanent magnet group includes first permanent magnet and second permanent magnet oppositely arranged in the ring groove, the gap is arranged between the first permanent magnet and the second permanent magnet, and when the rotor assembly and the stator assembly are assembled, the coil winding is inserted between the first permanent magnet and the second permanent magnet.

[0005] Further, an inner ring concentric with the rotor ring is provided in the rotor ring, the ring groove is composed of the inner wall of the rotor ring and the outer wall of the inner ring, and the first permanent magnet and the second permanent magnet are respectively fixed on the inner wall of the rotor ring and the outer wall of the inner ring and oppositely arranged.

[0006] Further, the magnetic poles of the first permanent magnet and the second permanent magnet on the opposite side in the ring groove are the same.

[0007] Further, a side cover is formed on one side of the rotor ring, the rotating shaft is fixed on the side cover, and the rotating shaft passes through the center position of the rotor ring and the ring groove.

[0008] Further, the support sleeve is a hollow cylinder, a convex ring is protruded outward along the circumference of the support sleeve on one side of the support sleeve, and the convex ring is fixedly connected with the coil winding coupled into a ring.

[0009] Further, the support sleeve is provided with a first bearing and a second bearing, both of which are sleeved on the rotating shaft, and the outer ring and the inner ring of the first bearing and the second bearing are loosely fitted with the inner wall of the support sleeve and the outer wall of the rotating shaft respectively.

[0010] Further, a first limiting step is arranged between the first bearing and the second bearing, and a second limiting step is arranged on the side of the side cover facing the ring groove, and the first bearing is located between the first limiting step and the second step.

[0011] Further, a buffer gasket is arranged between the second limiting step and the first bearing.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a plurality of permanent magnet groups are arranged in the ring groove, and the magnetic force between the permanent magnet groups is offset, so that when the coil winding is inserted into the gap between the permanent magnet groups, the magnetic force is hardly disturbed, so that the stator assembly and the rotor assembly are not disturbed by the magnetic force when being plugged and assembled, and the plug-in force is realized. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings.

[0015] Figure 1 It is the exploded view of the overall structure of the utility model;

[0016] Figure 2 It is the exploded view of the structure of the rotor assembly of the utility model;

[0017] Figure 3 It is the exploded view of the structure of the rotor assembly of the utility model from another angle;

[0018] Figure 4 It is the exploded view of the structure of the stator assembly of the utility model;

[0019] Figure 5 It is the overall structure of the utility model cutaway view.

[0020] The reference signs and names in the drawings are as follows:

[0021] The rotor assembly 100, the stator assembly 200, the rotor ring 110, the ring groove 120, the permanent magnet group 130, the gap 131, the rotating shaft 140, the coil winding 210, the support sleeve 220, the first permanent magnet 132, the second permanent magnet 133, the inner ring 111, the side cover 150, the convex ring 221, the first bearing 230, the second bearing 240, the first limiting step 250, the second limiting step 151, the buffer gasket 260. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] The present application will be described in more detail. It should be understood that the specific embodiments described herein are intended to explain the present application and are not intended to limit the present application. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween.

[0024] In the description of the present application, it should be noted that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself. In the description of the present application, it should be noted that the use of the words "first", "second" and the like to limit the parts, is only for the convenience of distinguishing the corresponding parts, and unless otherwise stated, the above words have no special meaning, and therefore cannot be understood as limiting the scope of protection of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0025] Unless otherwise defined, all technical and scientific terms used in the specification are the same as those commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not used to limit the present application.

[0026] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as they do not conflict with each other.

[0027] The preferred embodiments of the utility model will be further described with reference to the drawings. In the drawings, Figures 1 to 4 As shown in the drawings, a pluggable force-free motor comprises a rotor assembly 100 and a stator assembly 200, the rotor assembly 100 comprises a rotor ring 110, an annular groove 120 is arranged in the rotor ring 110, a plurality of groups of permanent magnet groups 130 are arranged in the annular groove 120, a gap 131 exists in the middle of the permanent magnet groups 130, and a rotating shaft 140 is arranged in the rotor ring 110; the stator assembly 200 comprises a coil winding 210 coupled in a ring shape, a support sleeve 220 is arranged in the coil winding 210, the support sleeve 220 is sleeved on the rotating shaft 140, and when the rotor assembly 100 and the stator assembly 200 are assembled, the coil winding 210 is inserted into the gap 131 in the middle of the permanent magnet groups 130.

[0028] In the working process of the embodiment, the permanent magnet groups 130 are arranged in the annular groove 120, and then the coil winding 210 coupled in a ring shape is inserted into the gap 131, at this time, when the coil winding 210 is electrified, the magnetic field effect generated will drive the permanent magnet groups 130 to rotate the rotor ring 110, so as to drive the rotating shaft 140 to rotate.

[0029] Compared with the prior art, the application sets a plurality of groups of permanent magnet groups 130 in the annular groove 120, so that the magnetic force between the permanent magnet groups 130 is offset, so that when the coil winding 210 is inserted into the gap 131 in the middle of the permanent magnet groups 130, it is almost not disturbed by the magnetic force, so that when the stator assembly 200 and the rotor assembly 100 are assembled, the magnetic force is not interfered, so as to realize the pluggable force-free assembly.

[0030] Further to the above-mentioned embodiments, in combination Figure 2 and Figure 3As shown, the permanent magnet group 130 includes a first permanent magnet 132 and a second permanent magnet 133 oppositely arranged in the ring groove 120, and the gap 131 is arranged between the first permanent magnet 132 and the second permanent magnet 133. When the rotor assembly 100 and the stator assembly 200 are assembled, the coil winding 210 is inserted between the first permanent magnet 132 and the second permanent magnet 133. Since the first permanent magnet 132 and the second permanent magnet 133 are oppositely arranged in the ring groove 120, the magnetic force in the gap 131 between the first permanent magnet 132 and the second permanent magnet 133 is counteracted. Thus, when the coil winding 210 is inserted into the gap 131 between the permanent magnet group 130, the magnetic force is hardly disturbed, thereby realizing the plug-free assembly.

[0031] Further to the above embodiment, in combination with Figure 2 and Figure 3 As shown, the inner ring 111 concentric with the rotor ring 110 is arranged in the rotor ring 110, the ring groove 120 is composed of the inner wall of the rotor ring 110 and the outer wall of the inner ring 111, and the first permanent magnet 132 and the second permanent magnet 133 are fixedly arranged on the inner wall of the rotor ring 110 and the outer wall of the inner ring 111 respectively and oppositely. When the coil winding 210 is energized, the magnetic field effect drives the permanent magnet group 130 to rotate the rotor ring 110 and the inner ring 111, thereby driving the rotating shaft 140 to rotate.

[0032] Further to the above embodiment, in combination with Figure 2 and Figure 3 As shown, the magnetic poles of the first permanent magnet 132 and the second permanent magnet 133 on the opposite side in the ring groove 120 are the same, so that the magnetic force between the permanent magnet group 130 is counteracted. Thus, when the coil winding 210 is inserted into the gap 131 between the permanent magnet group 130, the magnetic force is hardly disturbed, thereby realizing the plug-free assembly of the stator assembly 200 and the rotor assembly 100.

[0033] Further to the above embodiment, in combination with Figure 3 As shown, the side cover 150 is formed on one side of the rotor ring 110, and the rotating shaft 140 is fixed on the side cover 150. The rotating shaft 140 passes through the center position of the rotor ring 110 and the ring groove 120. When the coil winding 210 is energized, the magnetic field effect drives the permanent magnet group 130 to rotate the rotor ring 110, thereby driving the rotating shaft 140 to rotate along the center position of the rotor ring 110 and the ring groove 120.

[0034] Further to the above embodiment, as shown in Figure 4As shown, the support sleeve 220 is a hollow cylinder, and a convex ring 221 is outwardly convex along the circumference of the support sleeve 220 on one side of the support sleeve 220, and the convex ring 221 is fixedly connected with the coil winding 210 coupled in a ring shape, so that when the rotor assembly 100 and the stator assembly 200 are assembled, the coil winding 210 is inserted into the gap 131 between the first permanent magnet 132 and the second permanent magnet 133, and the inner ring 111 is inserted into the gap between the coil winding 210 and the support sleeve 220.

[0035] Further to the above embodiments, in combination with Figure 4 and Figure 5 As shown, the support sleeve 220 is provided with a first bearing 230 and a second bearing 240, both of which are sleeved on the rotating shaft 140, and the outer ring and the inner ring of the first bearing 230 and the second bearing 240 are loosely fitted with the inner wall of the support sleeve 220 and the outer wall of the rotating shaft 140, respectively, so that when the rotating shaft 140 rotates, the movement of the rotating shaft 140 in the radial direction depends on the radial runout accuracy of the first bearing 230 and the second bearing 240, eliminating the influence of other factors (such as machining accuracy), so that the movement of the rotating shaft 140 in the radial direction is more controllable.

[0036] In some embodiments, as Figure 5 shown, a first limiting step 250 is arranged between the first bearing 230 and the second bearing 240, and the first limiting step 250 is used to limit the movement of the first bearing 230 and the second bearing 240 in the axial direction. In some embodiments, a second limiting step 151 is arranged on the side of the side cover 150 facing the ring groove 120, the first bearing 230 is located between the first limiting step 250 and the second step, and the second limiting step 151 is used to cooperate with the first limiting step 250 to limit the movement of the first bearing 230 in the axial direction.

[0037] In some embodiments, as Figure 5 shown, a buffer gasket 260 is arranged between the second limiting step 151 and the first bearing 230, and the buffer gasket 260 is used to reduce friction on the side cover 150 when the first bearing 230 rotates with the rotating shaft 140.

[0038] The details of the above exemplary embodiments, and without departing from the spirit or essential characteristics of the present application, the present application can be realized in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A non-insertion-pull-out force motor, characterized in that, The assembly includes a rotor assembly (100) and a stator assembly (200). The rotor assembly (100) includes a rotor ring (110) with an annular groove (120) inside. Several sets of permanent magnet groups (130) are arranged in the annular groove (120) with a gap (131) in the middle of the permanent magnet groups (130). A rotating shaft (140) is provided inside the rotor ring (110). The stator assembly (200) includes a coil winding (210) coupled into a ring shape. A support sleeve (220) is provided inside the coil winding (210). When the rotor assembly (100) and the stator assembly (200) are assembled, the support sleeve (220) is sleeved on the rotating shaft (140), and the coil winding (210) is inserted into the gap (131) in the middle of the permanent magnet group (130).

2. The non-insertion / extraction force motor according to claim 1, characterized in that, The permanent magnet assembly (130) includes a first permanent magnet (132) and a second permanent magnet (133) disposed opposite to each other in an annular groove (120), and the gap (131) is disposed between the first permanent magnet (132) and the second permanent magnet (133). When the rotor assembly (100) and the stator assembly (200) are assembled, the coil winding (210) is inserted between the first permanent magnet (132) and the second permanent magnet (133).

3. The non-insertion / extraction force motor according to claim 2, characterized in that, An inner ring (111) concentric with the rotor ring (110) is provided inside the rotor ring (110). The ring groove (120) is composed of the inner wall of the rotor ring (110) and the outer wall of the inner ring (111). The first permanent magnet (132) and the second permanent magnet (133) are respectively tightly attached to the inner wall of the rotor ring (110) and the outer wall of the inner ring (111) and are arranged opposite to each other.

4. The non-insertion-extraction force motor according to claim 3, characterized in that, The first permanent magnet (132) and the second permanent magnet (133) have the same magnetic poles on opposite sides of the annular groove (120).

5. The non-insertion / extraction force motor according to claim 1, characterized in that, A side cover (150) is formed on one side of the rotor ring (110), and the rotating shaft (140) is fixed on the side cover (150). The rotating shaft (140) passes through the center of the rotor ring (110) and the annular groove (120).

6. The non-insertion-extraction force motor according to claim 5, characterized in that, The support sleeve (220) is a hollow cylinder. A protruding ring (221) protrudes outward along the circumference of the support sleeve (220) on one side. The protruding ring (221) is fixedly connected to the coil winding (210) coupled into a ring.

7. The non-insertion / extraction force motor according to claim 6, characterized in that, The support sleeve (220) is provided with a first bearing (230) and a second bearing (240). The first bearing (230) and the second bearing (240) are both sleeved on the rotating shaft (140). The outer ring and inner ring of the first bearing (230) are loosely fitted with the inner wall of the support sleeve (220) and the outer wall of the rotating shaft (140), respectively.

8. The non-insertion-extraction force motor according to claim 7, characterized in that, A first limiting step (250) is provided between the first bearing (230) and the second bearing (240), and a second limiting step (151) is provided on the side of the side cover (150) facing the annular groove (120). The first bearing (230) is located between the first limiting step (250) and the second step.

9. The non-insertion-extraction force motor according to claim 8, characterized in that, A buffer pad (260) is provided between the second limiting step (151) and the first bearing (230).

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