Wave spring and brake

Abstract

The utility model relates to the technical field of braking, and provides a wave spring and a brake. The wave spring includes: an annular elastic body; the plurality of deformation waves respectively protrude towards the same direction from the radial reference bottom surface of the annular elastic body; each supporting part is arranged between the adjacent deformation waves, the supporting parts and the deformation waves protrude in the same direction, the height of the supporting parts is smaller than that of the deformation waves, and / or the span of the supporting parts is smaller than that of the deformation waves. According to the wave spring, through the deformation waves protruding towards the same direction from the radial reference bottom face of the annular elastic body and the supporting parts arranged between the adjacent deformation waves, the performance of the wave spring under the extreme load is remarkably improved, and the service life of the wave spring is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of braking, in particular to a wave spring and a brake. Background Art

[0002] In brakes, wave springs are often used to provide stable elastic force, maintain the correct position of the brake pads and brake discs, and ensure the effectiveness and safety of the braking effect.

[0003] Figure 1 and Figure 2 The structure of the traditional wave spring is shown in Figure 1. Figure 1 and Figure 2 As shown, the conventional wave spring 10 is formed as a thin sheet-like elastic element consisting of alternating wave crests 11 and wave troughs 12 , and the wave crests 11 and wave troughs 12 are symmetrical structures relative to the deformation neutral plane 100 .

[0004] The problem with the traditional wave spring 10 is that when encountering extreme loads, the peaks 11 and troughs 12 deform toward the deformation neutral plane 100, causing the traditional wave spring 10 to be easily "flattened", resulting in plastic deformation and failure.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0006] In view of this, the utility model provides a wave spring and a brake, which can improve the performance of the wave spring under extreme loads and increase the service life of the wave spring.

[0007] According to one aspect of the present invention, a wave spring is provided, comprising an annular elastic body, and further comprising: a plurality of deformation waves, each of which rises in the same direction from a radial reference bottom surface of the annular elastic body; at least one support portion, each of which is arranged between adjacent deformation waves, the support portion and the deformation wave rise in the same direction, the height of the support portion being lower than the height of the deformation wave and / or the span of the support portion being smaller than the span of the deformation wave.

[0008] The deformation wave can be a crest, corresponding to the radial reference bottom surface being the lower support surface of the annular elastic body; the deformation wave can be a trough, corresponding to the radial reference bottom surface being the upper support surface of the annular elastic body. The deformation waves rise in the same direction from the radial reference bottom surface of the annular elastic body, forming a unilaterally asymmetric structure of the wave spring. Furthermore, support portions are added between adjacent deformation waves. The support portions have a smaller height and span, resulting in greater rigidity. The support portions rise in the same direction as the deformation waves, providing resistance to extreme loads. Under extreme loads, when the wave spring deforms to the point where it presses against the support portion, the wave spring's stiffness increases linearly, achieving a limiting effect and effectively preventing the wave spring from being flattened.

[0009] Therefore, the utility model can significantly improve the performance of the wave spring under extreme loads, avoid the wave spring from plastic deformation and failure, and increase the service life of the wave spring.

[0010] In some embodiments, the support portion is formed into any one or more of the following: wave-shaped folds; radially arranged convex points; and radially extending convex strips.

[0011] Structures such as corrugated folds, convex points, and convex strips with smaller spans and lower heights can all act as limiters / stops, achieving resistance to extreme loads through support parts with higher rigidity and preventing the wave spring from being flattened / compressed.

[0012] In some embodiments, the support portion and the annular elastic body are integrally formed.

[0013] In this way, the processing steps of the wave spring can be reduced and the cost can be reduced.

[0014] In some embodiments, the support portion is a separate support structure, the support portion radially extends from a support washer, and the support washer is disposed in the annular elastic body.

[0015] The multiple support parts are connected by support washers to ensure that the separated support structure remains stable as a whole.

[0016] In some embodiments, the height of the support portion is less than or equal to 1 / 2 of the height of the deformation wave, and / or the span of the support portion is less than or equal to 1 / 3 of the span of the deformation wave.

[0017] The specific height and span of the support portion can be determined based on factors such as limit / stop requirements and processing technology.

[0018] In some embodiments, the stiffness of the support portion is more than three times the stiffness of the deformation wave.

[0019] The higher the stiffness of the support portion, the stronger its ability to resist extreme loads, thereby effectively preventing the wave spring from plastic deformation and failure under extreme loads.

[0020] In some embodiments, the support portion is disposed between every two adjacent deformation waves.

[0021] In this way, an effective limiting / stopping effect can be achieved to prevent the deformation wave from being over-compressed and causing plastic deformation.

[0022] In some embodiments, the deformation wave is a sine wave, and the support portion is formed at a zero point of the sine wave.

[0023] The zero point of the sine wave is the equilibrium position of the load. The support portion is formed at the zero point of the sine wave, which has the least effect on the stiffness of the sine wave and avoids affecting the working performance of the wave spring.

[0024] In some embodiments, when the wave spring is subjected to a load of 1000N, the wave spring recovers to at least 72% of the maximum stroke after deformation; when the wave spring is subjected to a load of 2000N, the wave spring recovers to at least 69% of the maximum stroke after deformation.

[0025] The wave spring of the present invention benefits from the design of deformation waves and support parts, and can effectively maintain stability when subjected to extreme loads, avoiding plastic deformation and failure.

[0026] According to another aspect of the present invention, a brake is provided. The brake is equipped with the wave spring as described in any of the above embodiments.

[0027] The brake is equipped with the wave spring of the utility model, which can provide a stable elastic force by utilizing the limit load resistance of the wave spring, thereby ensuring the effectiveness and safety of the braking effect.

[0028] Compared with the prior art, the beneficial effects of the present invention include at least:

[0029] In this wave spring, the deformation waves rise in the same direction from the radial reference bottom surface of the annular elastic body, resulting in a unilaterally asymmetric structure. Furthermore, a support portion is provided between adjacent deformation waves. The support portion has a smaller height and smaller span, resulting in greater rigidity. The support portion and the deformation waves rise in the same direction, providing resistance to extreme loads. Under extreme loads, when the wave spring deforms to the point where it presses against the support portion, its stiffness increases linearly, achieving a limiting effect and effectively preventing the wave spring from being flattened.

[0030] The utility model can significantly improve the performance of the wave spring under extreme loads, avoid the wave spring from plastic deformation and failure, increase the service life of the wave spring, and improve the effectiveness and safety of the brake product to which the wave spring is applied.

[0031] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0033] Figure 1 and Figure 2 Shows a schematic structural diagram of a traditional wave spring;

[0034] Figures 3 to 5 A schematic diagram of the three-dimensional structure of a wave spring in an embodiment of the present utility model is shown;

[0035] Figure 6 Show Figure 3 A schematic side view of the structure of the wave spring shown;

[0036] Figure 7 A schematic diagram showing a comparison of load curves of the wave spring of the present invention and a traditional wave spring;

[0037] Figure 8 A schematic diagram showing the deformation process of a traditional wave spring;

[0038] Figure 9 A schematic diagram showing the deformation process of the wave spring of the present invention is shown. DETAILED DESCRIPTION

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to make this disclosure more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art.

[0040] The accompanying drawings are only schematic diagrams of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and their repeated description will be omitted.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The term "plurality" means two or more, unless otherwise clearly and specifically defined. In addition, in the description of the present invention, when it is said that a device is "connected" to another device, this includes not only direct connections, but also indirect connections through other elements.

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.

[0043] Figures 3 to 5 The three-dimensional structure of the wave spring in the embodiment of the utility model is shown in FIG. Figure 6 Indicate Figure 3 The side view structure of the wave spring shown; combined Figures 3 to 6 As shown, the wave spring 20 provided in the embodiment of the present invention includes:

[0044] annular elastic body;

[0045] A plurality of deformation waves 22 rise from the radial reference bottom surface 200 of the annular elastic body in the same direction;

[0046] At least one support portion 24 is provided between adjacent deformation waves 22 , the support portion 24 and the deformation wave 22 bulge in the same direction, the height of the support portion 24 is lower than the height of the deformation wave 22 and / or the span of the support portion 24 is smaller than the span of the deformation wave 22 .

[0047] The deformation waves 22 can be crests, correspondingly, the radial reference bottom surface 200 serves as the lower support surface of the annular elastic body; the deformation waves 22 can be troughs, correspondingly, the radial reference bottom surface 200 serves as the upper support surface of the annular elastic body. The deformation waves 22 rise in the same direction from the radial reference bottom surface 200 of the annular elastic body, giving the wave spring 20 a unilaterally asymmetric structure. Furthermore, support portions 24 are provided between adjacent deformation waves 22. These support portions 24 have a smaller height and smaller span, resulting in greater rigidity. Furthermore, the support portions 24 and the deformation waves 22 rise in the same direction, providing resistance to extreme loads. Under extreme loads, when the wave spring 20 deforms to the point where it presses against the support portions 24, its stiffness increases linearly, achieving a limiting effect and effectively preventing the wave spring 20 from being flattened.

[0048] It should be noted that under extreme loads, when the wave spring 20 is deformed to the point of pressing against the support portion 24, the support portion 24 may also undergo a certain deformation; however, since the stiffness of the support portion 24 is much greater than the deformation wave 22, the support portion 24 can effectively resist extreme loads and prevent the wave spring 20 from being flattened / crushed.

[0049] Here, height refers to the height along the axial direction, and span refers to the span along the circumferential direction. Preferably, the height of the support portion 24 is lower than the height of the deformation wave 22, and the span of the support portion 24 is smaller than the span of the deformation wave 22. For design considerations based on different requirements, the height of the support portion 24 can be lower than the height of the deformation wave 22, and the span of the support portion 24 can be consistent with the span of the deformation wave 22, or the span of the support portion 24 can be smaller than the span of the deformation wave 22, and the height of the support portion 24 can be consistent with the height of the deformation wave 22. In this way, the support portion 24 can also have greater rigidity than the deformation wave 22, thereby enabling the support portion 24 to resist extreme loads.

[0050] Therefore, the present invention can significantly improve the performance of the wave spring 20 under extreme loads, avoid the wave spring 20 from plastic deformation and failure, and increase the service life of the wave spring 20.

[0051] In some embodiments, the support portion 24 is formed into any one or more of the following: wave-shaped folds (such as Figure 3 and Figure 6 As shown); radially arranged convex points (as shown Figure 4 ); radially extending ribs (such as Figure 5 shown).

[0052] Small-span, low-height corrugations, raised points, and ridges can all serve as limiters / stops, allowing the highly rigid support portion 24 to resist extreme loads and prevent the wave spring 20 from being flattened. The specific shape of the support portion 24 can be selected based on factors such as the limiter / stop requirements, processing technology, and cost.

[0053] It should be noted that although Figure 3 、 Figure 4 、 Figure 5 The structures of the support portion 24 formed as wave-shaped folds, radially arranged convex points, and radially extending convex strips are respectively shown; if possible, support portions 24 with different shapes can also be provided in the same wave spring 20, as long as the support portion 24 can play a role in resisting extreme loads and avoid the wave spring 20 being flattened / crushed under extreme loads.

[0054] In some embodiments, the support portion 24 is integrally formed with the annular elastic body, thereby reducing the number of processing steps for the wave spring 20 and lowering costs.

[0055] In a more preferred embodiment, the support portion 24 is formed as a corrugated fold integrally formed with the annular elastic body, that is, it is formed into a small wave structure with a smaller span, lower height and greater rigidity, which can achieve better processing accuracy and resistance to extreme loads.

[0056] In some embodiments, the support portion 24 is a separate support structure, which radially extends from a support washer 240 disposed in the annular elastic body. The support washer 240 connects multiple support portions 24 to maintain the stability of the separate support structure as a whole.

[0057] When the support portion 24 is a separate support structure, the support portion 24 can be fixed between the deformation waves 22 by welding. In some cases, the support portion 24 may not be provided, and only the separate support portion 24 may be fixed between the deformation waves 22.

[0058] In some embodiments, the height of the support portion 24 is less than or equal to 1 / 2 of the height of the deformation wave 22, and / or the span of the support portion 24 is less than or equal to 1 / 3 of the span of the deformation wave 22. The specific height and span of the support portion 24 can be determined based on factors such as limiting / stop requirements and processing technology.

[0059] In some embodiments, the stiffness of the support portion 24 is more than three times the stiffness of the deformation wave 22. The higher the stiffness of the support portion 24, the stronger the ability to resist extreme loads, thereby effectively preventing the wave spring 20 from plastic deformation and failure under extreme loads.

[0060] In some embodiments, a support portion 24 is provided between each adjacent pair of deformation waves 22. This effectively limits and stops the deformation waves 22 from excessive compression and plastic deformation. The number of support portions 24 preferably matches the number of deformation waves 22, but can be increased or decreased as needed. Typically, two to four deformation waves 22 and four support portions 24 are provided, respectively, to effectively limit and stop the deformation waves 22.

[0061] In some embodiments, deformation wave 22 is a sinusoidal wave, and support portion 24 is formed at the zero point of the sine wave. The zero point of the sine wave is the equilibrium position of the load. Forming support portion 24 at the zero point of the sine wave minimizes the stiffness of the sine wave, thereby preventing any degradation in the performance of wave spring 20.

[0062] In some embodiments, when the wave spring 20 is subjected to a load of 1000N, the wave spring 20 recovers to at least 72% of the maximum stroke after deformation; when the wave spring 20 is subjected to a load of 2000N, the wave spring 20 recovers to at least 69% of the maximum stroke after deformation.

[0063] The wave spring 20 of the present invention, benefiting from the design of the deformation wave 22 and the support portion 24, effectively maintains stability under extreme loads, preventing plastic deformation and failure. Specifically, under a load of 1000N, the wave spring 20 of the present invention can recover to over 72% of its maximum travel after deformation; under a load of 2000N, it can recover to over 69% of its maximum travel after deformation. In contrast, a conventional wave spring 10, under loads exceeding 1000N, can only recover to 55% of its maximum travel after deformation.

[0064] Figure 7 The load curve comparison between the wave spring of the utility model and the traditional wave spring is shown. Figure 8 The deformation process of the traditional wave spring is shown in figure. Figure 9 The deformation process of the wave spring of the utility model is shown in FIG. Figures 7 to 9 As shown, in the initial stage S0, the traditional wave spring 10 and the wave spring 20 of the present invention are respectively in their original states; when the deformation stroke reaches point S1, the traditional wave spring 10 is almost flattened, resulting in plastic deformation, and the support portion 24 of the present invention plays a limiting / stopping role. After pressing the support portion 24, the stiffness of the wave spring 20 of the present invention rises linearly, preventing the wave spring 20 from being flattened / flattened, thereby significantly improving the supporting force and displacement curve slope of the wave spring 20 of the present invention, and increasing the ability to resist the ultimate load; further, after the rebound state S2, the wave spring 20 of the present invention still retains more than 69% of the original stroke, while the traditional wave spring 10 can only recover to 55% of the original stroke.

[0065] The present invention also provides a brake equipped with a wave spring 20 as described in any of the above embodiments. Specifically, the brake can be an electromechanical brake (EMB), an integrated brake controller (IBC), or other suitable brake. The brake equipped with the wave spring 20 of the present invention leverages the wave spring's extreme load resistance to provide a stable elastic force, thereby ensuring effective and safe braking.

[0066] In summary, the wave spring 20 of the present invention has deformation waves 22 that rise in the same direction from the radial reference bottom surface 200 of the annular elastic body, resulting in a unilaterally asymmetric structure. Furthermore, support portions 24 are provided between adjacent deformation waves 22. These support portions 24 have a relatively small height and span, resulting in greater rigidity. Furthermore, the support portions 24 and deformation waves 22 rise in the same direction, providing resistance to extreme loads. Under extreme loads, when the wave spring 20 deforms to the point of pressing against the support portions 24, its stiffness increases linearly, achieving a limiting effect and effectively preventing the wave spring 20 from being flattened.

[0067] The utility model can significantly improve the performance of the wave spring 20 under extreme loads, prevent the wave spring 20 from plastic deformation and failure, increase the service life of the wave spring 20, and improve the effectiveness and safety of the brake product to which the wave spring 20 is applied.

[0068] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A wave spring comprising an annular elastic body, characterized in that: Also includes: A plurality of deformation waves rise in the same direction from the radial reference bottom surface of the annular elastic body; At least one support portion, each of the support portions is arranged between adjacent deformation waves, the support portion and the deformation wave bulge in the same direction, the height of the support portion is lower than the height of the deformation wave and / or the span of the support portion is smaller than the span of the deformation wave.

2. The wave spring according to claim 1, wherein: The support portion is formed into any one or more of the following: Wave folds; convex points arranged along the radial direction; A rib extending in the radial direction.

3. The wave spring according to claim 1, wherein: The support portion and the annular elastic body are integrally formed.

4. The wave spring according to claim 1, wherein: The support portion is a separate support structure, and the support portion radially extends from a support washer, and the support washer is arranged in the annular elastic body.

5. The wave spring according to claim 1, wherein: The height of the support portion is less than or equal to 1 / 2 of the height of the deformation wave, and / or the span of the support portion is less than or equal to 1 / 3 of the span of the deformation wave.

6. The wave spring according to claim 1, wherein: The stiffness of the support portion is more than three times the stiffness of the deformation wave.

7. The wave spring according to claim 1, wherein: The supporting portion is provided between every two adjacent deformation waves.

8. The wave spring according to claim 1, wherein: The deformation wave is a sine wave, and the support portion is formed at a zero point position of the sine wave.

9. The wave spring according to any one of claims 1 to 8, wherein: When the wave spring is subjected to a load of 1000N, the wave spring recovers to at least 72% of the maximum stroke after deformation; When the wave spring is subjected to a load of 2000N, the wave spring recovers to at least 69% of the maximum stroke after deformation.

10. A brake, characterized in that: The brake is equipped with a wave spring according to any one of claims 1 to 9.

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