Corrugated elastic sheet
By using corrugated springs in brushless motors and utilizing support rings and corrugated structures to absorb vibration energy, the problem of unsatisfactory vibration reduction effect of existing brushless motors is solved, achieving a simple and effective vibration reduction and noise reduction effect.
Patent Information
- Application Number
- CN202520095929.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing brushless motor vibration damping structures are not ideal, are complex and costly, and cannot effectively reduce vibration and noise.
The corrugated spring sheet is formed in one piece by stamping and installed in the through hole of the motor shaft fitting. The support ring and corrugated structure absorb and buffer vibration energy, reducing noise generated by air disturbance.
It effectively absorbs and disperses motor vibration, reduces noise, has a simple structure and low cost, and has a good vibration reduction and noise reduction effect.
Smart Images
Figure CN223563345U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present scheme relates to the field of brushless motor noise reduction technology, in particular to a corrugated spring. BACKGROUND
[0002] During the operation of the brushless motor, vibration and noise are generated due to the rotation of the rotor, the action of electromagnetic force, etc., which not only affects the performance and service life of the motor, but also may have adverse effects on the surrounding environment and equipment. At present, although there are some measures to reduce vibration and noise, the existing damping structures often have problems such as unsatisfactory damping effect, complex structure, high cost, etc.
[0003] Therefore, a simple and effective, low-cost damping and noise reduction device is needed to solve the problem of vibration and noise of the brushless motor. SUMMARY
[0004] To solve the above problems, the present scheme provides a corrugated spring.
[0005] To achieve the above purpose, the technical scheme adopted by the present scheme is: a corrugated spring installed in the through hole of an assembly part for supporting the motor shaft, including a support ring at both ends and a corrugated structure in the middle, which is formed in one piece by stamping process, and the support ring at one end abuts against the top of the motor shaft, and the wave number of the corrugated structure is ≥1.
[0006] Further, the height of the support ring and the corrugated structure as a whole is 2.4-3mm, and the thickness of each layer is 0.25-0.27mm.
[0007] Further, the height of the support ring and the corrugated structure as a whole is 2.6mm, and the thickness of each layer is 0.26mm.
[0008] Further, the outer diameter of the support ring is 7.88-7.93mm, the inner diameter is 5.9-6.3mm, and the width is 0.77-0.81mm.
[0009] Further, the outer diameter of the support ring is 7.89mm, the inner diameter is 6.1mm, and the width is 0.79mm.
[0010] Further, the wave number of the corrugated structure is 2.5.
[0011] In summary, the present scheme has the following advantages:
[0012] The corrugated spring provided by the present scheme utilizes its elastic deformation to absorb and buffer vibration energy, disperses and weakens the violent vibration that would otherwise be directly transmitted to the motor housing and surrounding structure. At the same time, the corrugated structure makes the friction between the spring and the air during vibration more gentle, reducing the noise caused by air disturbance, achieving the effect of damping and noise reduction. Attached Figure Description
[0013] Figure 1 This is a side view of the corrugated spring sheet;
[0014] Figure 2 It is a top view / bottom view of the corrugated spring sheet;
[0015] Figure 3 This is a side view of the corrugated spring sheet in another embodiment;
[0016] in:
[0017] 1. Support ring; 2. Corrugated structure. Detailed Implementation
[0018] The present solution will be further described below with reference to the accompanying drawings and embodiments:
[0019] Example 1:
[0020] A corrugated spring is installed in the through hole of the assembly to support the motor shaft, such as... Figure 1 and Figure 2 As shown, it includes support rings at both ends and a corrugated structure in the middle, which are formed in one piece by stamping. The support ring at one end abuts against the top of the motor shaft, and the corrugated structure has ≥1 wave.
[0021] The overall height of the support ring 1 and the corrugated structure 2 is 2.4-3mm, and the thickness of each layer is 0.25-0.27mm. After the corrugated spring is pressed down by 2mm, the elastic force generated can be in the range of 18-26N.
[0022] The overall height of the support ring 1 and the corrugated structure 2 is 2.6mm, and the thickness of each layer is 0.26mm.
[0023] The corrugated spring body is made of stainless steel or alloy structural steel, which has good elasticity and fatigue strength. In this embodiment, the corrugated spring body is made of stainless steel, and the model can be 304, SUS631 J1-CSP, 301H, X10CrTi 189 or other models that meet the characteristics of this solution. 301H is preferred. 301H stainless steel is easy to work harden when subjected to external impact, which can absorb more impact energy, has good wear resistance and fatigue strength, and has a high cost performance.
[0024] As another embodiment of this invention, the alloy structural steel material can be selected as 65Mn material.
[0025] The outer diameter of the support ring 1 is 7.88-7.93 mm, the inner diameter is 5.9-6.3 mm, and the width is 0.77-0.81 mm; wherein the outer diameter of the support ring 1 < the shaft circumference of the motor shaft < the inner diameter of the assembly part through hole, and in the through hole of the assembly part, the support ring 1 at one end of the corrugated elastic sheet abuts against the top of the motor shaft.
[0026] The outer diameter, inner diameter and width of the support ring 1 are adjusted and changed according to the shaft circumference of the motor shaft and the inner diameter of the assembly part through hole, and in this embodiment, the outer diameter of the support ring 1 is 7.89 mm, the inner diameter is 6.1 mm, and the width is 0.79 mm.
[0027] The wave number of the corrugated structure 2 is 2.5, and after the corrugated elastic sheet is pressed down by 2 mm, the elastic force generated is 22 N.
[0028] Further illustrated in combination with the use mechanism thereof:
[0029] In work, when the brushless motor generates vibration, the corrugated elastic sheet absorbs and buffers the vibration energy by using the elastic deformation of itself, and disperses and weakens the violent vibration which is originally directly transmitted to the motor shell and the surrounding structure. The corrugated structure 2 makes the friction mode of the elastic sheet with air in the vibration process more gentle, and reduces the noise generated by air disturbance.
[0030] Embodiment 2:
[0031] This embodiment provides a corrugated elastic sheet, which is different from that of embodiment 1 in that, as shown in Figure 2 and Figure 3 The height of the support ring 1 and the corrugated structure 2 as a whole is 4-5 mm, and the thickness of each layer is 0.2-0.24 mm. The outer diameter of the support ring 1 is 12.45-12.95 mm, the inner diameter is 9.6-9.9 mm, and the width is 1.41-1.43 mm. The wave number of the corrugated structure 2 is 4, and the main body of the corrugated elastic sheet is made of alloy structural steel, preferably 65Mn.
[0032] In the process of pressure test, it is found that when each data of the corrugated elastic sheet is in the above range, after the corrugated elastic sheet is pressed down by 2 mm, the elastic force generated is still in the range of 18-26 N, and still has the effect of shock absorption and noise reduction.
[0033] In this embodiment, the height of the support ring 1 and the corrugated structure 2 as a whole is 4.5 mm, and the thickness of each layer is 0.22 mm. The outer diameter of the support ring 1 is 12.65 mm, the inner diameter is 9.8 mm, and the width is 1.42 mm.
[0034] When the corrugated elastic sheet is pressed down by 2 mm, the range of the elastic force generated is still 18-26 N, and in this embodiment, the elastic force generated is 23 N.
[0035] In summary, the corrugated elastic sheet provided by the application absorbs and buffers vibration energy by using its elastic deformation, disperses and weakens the violent vibration which is originally directly transmitted to the motor shell and the surrounding structure. At the same time, the corrugated structure 2 makes the friction mode of the elastic sheet with air in the vibration process more gentle, reduces the noise generated by air disturbance, and achieves the effect of shock absorption and noise reduction.
[0036] The above-mentioned embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent transformation or modification made according to the spirit and essence of the present application should be covered within the protection scope of the present application.
[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements.
[0038] For those skilled in the art, the specific meanings of the above-mentioned terms in the present application can be understood according to the specific circumstances.
[0039] It should be understood that the above-mentioned embodiments are only exemplary and not limiting, and those skilled in the art can make various obvious or equivalent modifications or replacements to the above-mentioned details without departing from the basic principles of the present application, which shall be included in the protection scope of the present application.
Claims
1. A corrugated spring washer mounted in a through hole of a fitting member for supporting a motor shaft, characterized by: Supporting ring (1) and corrugated structure (2) in the middle of both ends, by stamping process one-time molding, one end of the supporting ring (1) against the top of the motor shaft, the number of wave of the corrugated structure (2) ≥1.
2. A corrugated spring washer according to claim 1, characterised in that: The height of the supporting ring (1) and the corrugated structure (2) is 2.4-3mm, and the thickness of each layer is 0.25-0.27mm.
3. A corrugated washer according to claim 2, wherein: The height of the supporting ring (1) and the corrugated structure (2) is 2.6mm, and the thickness of each layer is 0.26mm.
4. A corrugated washer according to claim 3, wherein: The outer diameter of the supporting ring (1) is 7.88-7.93mm, the inner diameter is 5.9-6.3mm, and the width is 0.77-0.81mm.
5. A corrugated washer according to claim 4, wherein: The outer diameter of the supporting ring (1) is 7.89mm, the inner diameter is 6.1mm, and the width is 0.79mm.
6. The corrugated washer of claim 3, wherein: The number of wave of the corrugated structure (2) is 2.5.