A spring structure of an electric machine and an electric machine

Abstract

This utility model discloses a spring sheet structure for an electric motor and the motor itself. The spring sheet structure includes a spring sheet body, with a plurality of positioning protrusions on the front side and a plurality of positioning recesses on the back side. The number of positioning protrusions and positioning recesses are equal, their shapes are identical, and their positions correspond to those of the opposite sides. Several spring sheet bodies can be stacked in the same direction, with any two adjacent spring sheet bodies fitting together. A positioning protrusion on the fitting surface of one spring sheet body can be positioned and connected to a corresponding positioning recess on the fitting surface of another spring sheet body. This utility model embodiment, through the corresponding positioning protrusions and positioning recesses on the front and back sides of the spring sheet body, prevents relative sliding between the stacked spring sheet bodies, making the assembly of different spring sheet bodies more precise. This helps reduce friction between the spring sheets, thus reducing noise, lowering the risk of air pockets between the spring sheets, and extending the service life of the spring sheets.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a spring structure for a motor and a motor. Background Technology

[0002] A linear motor is a type of motor that uses the principle of magnetic fields to levitate and reciprocate linearly. It is widely used in electric personal care devices such as shavers and electric clippers. Existing linear motors typically have leaf springs or sheet springs on both sides of the mover to provide elastic support for the mover's oscillation and assist in commutation.

[0003] Common motor springs are generally formed by stacking multiple springs and fixing them at both ends to form an integral structure. However, this simple stacked assembly spring structure is prone to hollowing out in the middle due to positioning errors in the assembly of the springs or the cumulative tolerance of the motor. This can lead to noise during the oscillating operation of the motor, and the uneven force on each spring after hollowing out will shorten the service life of the springs. Utility Model Content

[0004] In view of this, the present invention provides a spring sheet structure for an electric motor and an electric motor, which solves the problem that the spring sheet mechanism of the stacked assembly of electric motors in the prior art is prone to hollowing in the middle due to positioning errors.

[0005] To achieve one or more of the above objectives or other objectives, this utility model proposes: a spring sheet structure for an electric motor, comprising: a spring sheet body, wherein a plurality of positioning protrusions are provided on the front side of the spring sheet body, and a plurality of positioning recesses are provided on the back side of the spring sheet body, wherein the number of positioning protrusions and positioning recesses are equal, the same in shape, and the positions are opposite to each other.

[0006] Several of the aforementioned spring bodies can be stacked in the same direction, and any two adjacent spring bodies can be attached to each other. The positioning protrusion on the attachment surface of one of the spring bodies can be positioned and connected to the positioning recess on the corresponding attachment surface of the other spring body.

[0007] Preferably, the positioning protrusion and the positioning recess are integrally formed by stamping the spring body.

[0008] Preferably, the spring body is strip-shaped, with two positioning protrusions and two positioning recesses at the upper end, and at least one positioning protrusion and one positioning recess at the lower end.

[0009] Preferably, positioning notches are provided on the three sides of the upper end of the spring body.

[0010] Preferably, at least one connecting hole is provided at each end of the spring body.

[0011] Preferably, the connecting hole is fixed by screws, bolts or rivets.

[0012] Preferably, the edges of both the positioning protrusion and the positioning recess are rounded.

[0013] Preferably, the spring sheet structure of the motor includes three spring sheet bodies, which are arranged side by side in parallel along their width direction, and the lower ends of the three spring sheet bodies are integrally connected.

[0014] Preferably, the upper ends of the two spring bodies located on both sides are detachably connected with inverted "U"-shaped fixing plates.

[0015] This utility model also proposes: an electric motor, including a stator module, a mover module, and a spring sheet structure of the electric motor as described in any one of the above, wherein the lower end of the spring sheet body is connected to the stator module, and the upper end of the spring sheet body is connected to the mover module.

[0016] Implementing the embodiments of this utility model will have the following beneficial effects:

[0017] By adopting the aforementioned spring sheet structure of the motor, the positioning protrusions and positioning recesses on the front and back sides of the spring sheet body can prevent relative sliding between multiple stacked spring sheet bodies, making the assembly between different spring sheet bodies more precise, helping to reduce friction between spring sheets and thus reduce noise, reduce the risk of hollowing between spring sheets, and extend the service life of the spring sheets. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] in:

[0020] Figure 1 These are the front and rear views of the spring-loaded structure of the motor proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of one embodiment of the spring-loaded structure of the motor proposed in this utility model. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of one embodiment of the spring-loaded structure of the motor proposed in this utility model. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the stacked structure of one embodiment of the spring sheet structure of the motor proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the overall structure of the motor proposed in this utility model.

[0025] Reference numerals: 10, spring body; 11, positioning protrusion; 12, positioning recess; 13, positioning notch; 14, connecting hole; 15, fixing piece; 20, stator module; 30, mover module. Detailed Implementation

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0029] like Figure 1-5 The image shows an embodiment provided by this utility model.

[0030] This utility model embodiment provides a spring sheet structure for a motor, including: a spring sheet body 10, with a plurality of positioning protrusions 11 on the front side and a plurality of positioning recesses 12 on the back side. The number of positioning protrusions 11 and positioning recesses 12 are equal, the same in shape, and their positions are opposite to each other. The positioning protrusions 11 can be integrally formed or welded from the spring sheet body 10, and the positioning recesses 12 can be formed by drilling or cutting. In specific implementation, since the spring sheet body 10 is a thin metal sheet, stamping is preferred, that is, the positioning protrusions 11 and positioning recesses 12 are integrally formed by stamping from the spring sheet body 10; the plurality of spring sheet bodies 10 can be layered in the same direction. In a stacked configuration, the number of layers of spring body 10 is typically 1-12 pieces. Each spring body 10 is identical, and any two adjacent spring bodies 10 are fitted together and overlap each other. This ensures that the positions of the positioning protrusions 11 and positioning recesses 12 on the two spring bodies 10 also overlap. The positioning protrusion 11 on the mating surface of one spring body 10 can be positioned and connected to the positioning recess 12 on the corresponding mating surface of the other spring body 10. This prevents the two spring bodies 10 from sliding or rotating relative to each other, making the assembly between different spring bodies 10 more precise. This helps to reduce friction between the springs and thus reduce noise, lowers the risk of hollow areas between the springs, and extends the service life of the springs.

[0031] Specifically, the spring body 10 is strip-shaped. The upper end of the spring body 10 is provided with two positioning protrusions 11 and two positioning recesses 12, and the lower end of the spring body 10 is provided with at least one positioning protrusion 11 and one positioning recess 12, so that there are at least three limiting points between the two fitted spring bodies 10, ensuring that the two spring bodies 10 will not slide relative to each other or rotate around one of the positioning protrusions 11.

[0032] Furthermore, positioning notches 13 are provided on the three sides of the upper end of the spring body 10. The positioning notches 13 in three different directions can facilitate the quick positioning and placement of the spring bodies 10 by machine when they are stacked, so that multiple spring bodies 10 can be quickly aligned and overlapped.

[0033] Specifically, each end of the spring body 10 is provided with at least one connecting hole 14, and the connecting holes 14 are connected and fixed by screws, bolts or rivets, thereby pressing and connecting multiple spring bodies 10 to the motor.

[0034] Specifically, the edges of both the positioning protrusion 11 and the positioning recess 12 are machined with rounded corners.

[0035] Further, the shrapnel structure of the motor includes three shrapnel bodies 10. The three shrapnel bodies 10 are arranged side by side and parallel in their width direction, and the lower ends of the three shrapnel bodies 10 are integrally connected to form a shape similar to the Chinese character "mountain". At the upper ends of the two shrapnel bodies 10 located on both sides, there are detachably connected with an inverted "U"-shaped fixing piece 15, so that the two shrapnel bodies 10 on both sides maintain the same swinging direction.

[0036] The embodiment of the present utility model further provides a motor, which includes a stator module 20, a rotor module 30, and the shrapnel structure of the motor according to any one of the above. The lower end of the shrapnel body 10 is connected to the stator module 20, and the upper end of the shrapnel body 10 is connected to the rotor module 30.

[0037] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of the embodiments. The drawings show the preferred embodiments of the present utility model, but do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure made by using the specification and drawings of the present utility model, directly or indirectly applied in other related technical fields, is equally within the scope of the patent protection of the present utility model.

Claims

1. A spring-loaded structure for an electric motor, characterized in that, include: The spring body (10) has several positioning protrusions (11) on its front side and several positioning recesses (12) on its back side. The number of positioning protrusions (11) and positioning recesses (12) are equal, the same in shape and the positions are opposite to each other. Several of the spring bodies (10) can be stacked in the same direction, and any two adjacent spring bodies (10) can be attached to each other. The positioning protrusion (11) on the attachment surface of one of the spring bodies (10) can be positioned and connected to the positioning recess (12) on the corresponding attachment surface of the other spring body (10).

2. The spring structure of an electric motor according to claim 1, wherein The positioning protrusion (11) and the positioning recess (12) are integrally formed by stamping the spring body (10).

3. The spring structure of an electric motor according to claim 2, wherein The spring body (10) is strip-shaped. The upper end of the spring body (10) is provided with two positioning protrusions (11) and two positioning recesses (12). The lower end of the spring body (10) is provided with at least one positioning protrusion (11) and one positioning recess (12).

4. The spring structure of the electric machine according to claim 3, characterized in that, Positioning notches (13) are provided on the three sides of the upper end of the spring body (10).

5. The spring structure of the electric machine according to claim 1, characterized in that, At least one connecting hole (14) is provided at each end of the spring body (10).

6. The spring structure of the electric machine according to claim 5, characterized in that, The connecting hole (14) is fixed by screws, bolts or rivets.

7. The spring structure of the electric machine according to claim 1, characterized in that, The edges of the positioning protrusion (11) and the positioning recess (12) are both rounded.

8. The spring structure of the electric machine according to claim 1, characterized in that, It includes three spring bodies (10), which are arranged side by side in parallel along their width direction, and the lower ends of the three spring bodies (10) are integrally connected.

9. The lamination structure of an electric machine according to claim 8, characterized in that The upper ends of the two spring bodies (10) located on both sides are detachably connected to inverted "U" shaped fixing pieces (15).

10. An electric machine characterized by The device includes a stator module (20), a mover module (30), and a spring sheet structure for the motor according to any one of claims 1-9, wherein the lower end of the spring sheet body (10) is connected to the stator module (20), and the upper end of the spring sheet body (10) is connected to the mover module (30).

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