An overlying pair of wave springs

Abstract

The application provides a superimposed pair of wave springs, comprising: a plurality of superimposed layer wave springs, each of which is spirally curved along an axial direction, and each layer wave is arranged in a superimposed manner; and at least one connecting spring, which connects two adjacent superimposed layer wave springs arranged in a superimposed manner to make the first wave valley and the second wave peak of the two adjacent superimposed layer wave springs abut against each other, and the first wave peak and the second wave valley are arranged in an upper-lower manner. The inventor ingeniously connects the superimposed layer wave springs arranged in an upper-lower manner through the connecting spring, and makes the two arranged in a pair of abutment, so that the wave spring has better verticality, greater elasticity and longer service life. In addition, the rigidity of the wave spring can be improved by increasing the layer number of the superimposed layer wave spring under the condition that the overall material thickness is unchanged, and various wave springs with different rigidity can be produced by changing the layer number of the superimposed layer wave spring. In addition, the wave spring can form a variable rigidity characteristic by changing the layer number of each superimposed layer.

Description

Technical Field

[0001] The present invention relates to the technical field of wave springs, and in particular to a stacked top-to-top wave spring. Background Art

[0002] Crest-to-crest wave springs are made by winding a long, sheet-like wire helically along the axial direction. Each turn has several peaks and troughs. Compared with ordinary spiral compression springs, crest-to-crest wave springs have the advantage of occupying only half or less of the axial space while bearing the same load. They are widely used in the machinery manufacturing industry, hydraulic equipment and other industries.

[0003] Traditional top-to-top wave springs such as Figure 7 As shown, the waveform is formed by bending downward at an angle. The low point at the right end of the first half wave 01 extends to the peak of the second half wave 02 of the next wave circle. In this way, the height of the waveform at the closing is uneven, which means that the verticality is not good, and the verticality has a great influence on the performance of the wave spring.

[0004] Another type of wave spring with multiple layers is Figure 8 As shown, the metal wire is spirally bent along the axial direction, forming each layer of wavy waves. The waves of each layer overlap and fit together, that is, the peaks of each layer are aligned with the peaks, and the troughs are aligned with the troughs. Although the overlapping wave spring has good verticality, it has a short usable stroke and poor elasticity. Therefore, there is an urgent need to design a top-to-top wave spring with good verticality, good elasticity, and a long usable stroke while maintaining high stiffness. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the prior art top-to-top wave spring that cannot simultaneously maintain good verticality and good elastic performance, thereby providing a stacked top-to-top wave spring with good verticality, a high available stroke and good elastic performance while ensuring greater stiffness.

[0006] To this end, the present invention provides a stacked, top-to-top wave spring comprising a plurality of stacked wave springs and a connecting spring. Each of the stacked wave springs is formed by axial spiral bending, and each layer is wavy, with the waves of each layer overlapping and fitting together. The connecting spring comprises at least one connecting spring, which connects two adjacent stacked wave springs stacked up and down, so that the first wave troughs and second wave peaks of the two adjacent stacked wave springs are abutted against each other, and the first wave peaks and second wave troughs are arranged in an upward and downward relative manner.

[0007] The connecting spring is arranged between the first wave peak and the second wave valley that are opposite to each other in the upper and lower parts of two adjacent stacked wave springs, one end of which is connected to the first wave valley of the bottom layer of the stacked wave spring arranged above, and the other end is connected to the second wave peak of the top layer of the stacked wave spring arranged below.

[0008] The plurality of the superimposed layer wave springs and the connecting spring are integrally wound by the same sheet metal wire.

[0009] The connecting spring comprises a first segment which is connected with the bottom layer of the superimposed layer wave spring arranged upward, a second segment which is connected with the top layer of the superimposed layer wave spring arranged downward, and an oblique segment connecting the first segment and the second segment.

[0010] The connecting places of the oblique segment with the first segment and the second segment are all circular arc transition connections.

[0011] The lengths of the first segment and the second segment are both 1 / 6-1 / 4 of one wave length.

[0012] The connecting spring is a flat line.

[0013] The connecting spring is a half wave shape which is closely connected with the superimposed layer wave spring arranged upward or downward.

[0014] The wave shape is a sine shape.

[0015] Each layer of the superimposed layer wave spring comprises at least two sine waves.

[0016] The technical scheme has the following advantages:

[0017] 1. The superimposed and top-to-top wave spring comprises a plurality of superimposed layer wave springs and connecting springs, the adjacent two superimposed layer wave springs arranged upward and downward are connected by the connecting spring, the first wave valley and the second wave peak of the adjacent two superimposed layer wave springs are top-to-top, and the first wave peak and the second wave valley are arranged upward and downward. Thus, the verticality is ensured, the elasticity is large, the available stroke is high, the rigidity is improved by increasing the layer number of the superimposed layer wave spring under the condition of the same material thickness, the superimposed layer wave springs with different layer numbers are connected by the connecting spring, various wave springs with different rigidity are produced, the rigidity of the wave spring is changed, and different needs of customers are met.

[0018] 2. The superimposed and top-to-top wave spring comprises a plurality of superimposed layer wave springs and connecting springs, the connecting spring is arranged between the first wave peak and the second wave valley of the adjacent two superimposed layer wave springs, one end of the connecting spring is connected with the first wave valley of the bottom layer of the superimposed layer wave spring arranged upward, and the other end of the connecting spring is connected with the second wave peak of the top layer of the superimposed layer wave spring arranged downward. The structure of the connecting spring makes the plurality of superimposed layer wave springs and the connecting spring integrally wound by the same sheet metal wire, the processing is fast and convenient, the production efficiency is greatly improved, and the production cost is reduced.

[0019] 3. The application provides the superimposed pair of top wave springs, the connecting spring comprises the first section which is connected with the bottom layer of the superimposed layer wave spring arranged above, the second section which is connected with the top layer of the superimposed layer wave spring arranged below, and the oblique section which connects the first section and the second section, so that the connecting spring is arranged in the wave shape, thereby increasing the elastic performance.

[0020] 4. The application provides the superimposed pair of top wave springs, the connecting spring is the half wave shape which is closely connected with the superimposed layer wave spring arranged above or arranged below, and the half wave shape connecting spring can increase the elastic performance of the superimposed pair of top wave springs. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] Figure 1 It is a perspective view of the superimposed pair of top wave springs of the application;

[0023] Figure 2 It is a front view of Figure 1 ;

[0024] Figure 3 It is a perspective view of the second embodiment of the superimposed pair of top wave springs of the application;

[0025] Figure 4 It is a front view of Figure 3 ;

[0026] Figure 5 It is a perspective view of the third embodiment of the superimposed pair of top wave springs of the application;

[0027] Figure 6 It is a front view of Figure 5 ;

[0028] Figure 7 It is a perspective view of the pair of top wave springs in the prior art;

[0029] Figure 8 It is a perspective view of the superimposed layer wave spring in the prior art.

[0030] Explanation of reference signs: 01, first half wave; 02, second half wave;

[0031] 1, first stacked layer wave spring; 11, first wave trough; 12, first wave crest; a1, first layer; a2, second layer; 2, second stacked layer wave spring; 21, second wave crest; 22, second wave trough; b1, third layer; b2, fourth layer; 3, connecting spring; 31, first section; 32, second section; 33, oblique section. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in 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.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0036] Embodiment

[0037] The present embodiment provides a stacked pair of wave springs, as shown in Figure 1 and 2 It comprises a first stacked layer wave spring 1, a second stacked layer wave spring 2 and a connecting spring 3.

[0038] As shown in Figure 1 and 2As shown in FIG. 1 and FIG. 2, the first multi-layered wave spring 1 and the second multi-layered wave spring 2 are arranged in an up-down manner, each of the multi-layered wave springs is formed in an axial helical manner, the first multi-layered wave spring 1 has a first layer a1 and a second layer a2, and the second multi-layered wave spring 2 has a third layer b1 and a fourth layer b2, wherein the end of the first layer a1 is integrally connected with the start of the second layer a2, the end of the third layer b1 is integrally connected with the start of the fourth layer b2, each layer is in a wave shape, the wave shape is a sine shape, and each layer includes three sine wave shapes. The wave shapes of the layers are arranged in an overlapping manner, the first trough 11 of the first multi-layered wave spring 1 is in abutment with the second peak 21 of the second multi-layered wave spring 2, and the first peak 12 of the first multi-layered wave spring 1 is arranged in an up-down manner relative to the second trough 22 of the second multi-layered wave spring 2.

[0039] The connecting spring 3 is arranged between the first peak 12 and the second trough 22 of the adjacent two multi-layered wave springs arranged in an up-down manner, one end of the connecting spring 3 is connected with the first trough 11 of the bottom layer of the multi-layered wave spring arranged on the top, and the other end of the connecting spring 3 is connected with the second peak 21 of the top layer of the multi-layered wave spring arranged on the bottom. In the embodiment, one end of the connecting spring 3 is connected with the first trough 11 of the second layer a2, and the other end of the connecting spring 3 is connected with the second peak 21 of the third layer b1. The connecting spring 3 includes a first segment 31 connected with the first trough 11 of the second layer a2, a second segment 32 connected with the second peak 21 of the third layer b1, and an oblique segment 33 connecting the first segment 31 and the second segment 32, the lengths of the first segment 31 and the second segment 32 are 1 / 6-1 / 4 of the length of one wave shape, and the connecting positions of the oblique segment 33 with the first segment 31 and the second segment 32 are circular arc transition connections. In the embodiment, the multi-layered wave springs and the connecting spring 3 are integrally formed by winding one sheet metal wire.

[0040] As a transformable embodiment, the number of the multi-layered wave springs can be 2, 3, 4 or more, and the number of the layers of the multi-layered wave springs can be 2, 3, 4 or more.

[0041] As a transformable embodiment, the number of the sine waves of each layer of the multi-layered wave spring can be 2, 3, 4 or more.

[0042] As a transformable embodiment, as shown in FIG. 3 and FIG. 4, the connecting spring 3 is a straight line. Figure 3 and 4 As a transformable embodiment, as shown in FIG. 5 and FIG. 6, the connecting spring 3 is a half wave shape closely fitted with the multi-layered wave spring arranged on the top or arranged on the bottom.

[0043] As a transformable embodiment, as shown in FIG. 7 and FIG. 8, the connecting spring 3 is a half wave shape closely fitted with the multi-layered wave spring arranged on the top or arranged on the bottom. Figure 5 and 6 As a transformable embodiment, as shown in FIG. 9 and FIG. 10, the connecting spring 3 is a half wave shape closely fitted with the multi-layered wave spring arranged on the top or arranged on the bottom.

[0044] As the transformable implementation, the number of the connecting spring 3 can be 1, 2, 3 or more.

[0045] As the transformable implementation, one end of the connecting spring 3 can be welded with the bottom layer of the stacked layer wave spring arranged above, and the other end can be connected with the second wave peak 21 of the top layer of the stacked layer wave spring arranged below.

[0046] The stacked pair of top wave springs of the present application comprises a plurality of stacked layer wave springs and connecting springs 3, the inventor ingeniously connects two adjacent stacked layer wave springs arranged in an up-down stack through the connecting spring 3, and makes the first wave valley 11 and the second wave peak 21 of the two adjacent stacked layer wave springs abut against each other, and the first wave peak 12 and the second wave valley 22 are arranged in an up-down relationship. In this way, the verticality is ensured, the elasticity is good, and the available stroke is high. In addition, under the condition that the overall material thickness is unchanged, the rigidity can be improved by increasing the number of layers of the stacked layer wave spring, and various wave springs with different rigidity can be produced by changing the number of layers of the stacked layer wave spring, so that the wave spring has variable rigidity characteristics, and different needs of customers can be met.

[0047] Obviously, the above embodiments are only examples for clearly illustrating, and are not limitation to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. All the embodiments do not need to be exhausted, and the obvious changes or variations still fall within the protection scope of the present application.

Claims

1. A superimposed top-to-top wave spring, characterized in that: include: A plurality of stacked wave springs, each of which is formed by spiral bending along the axial direction, and each layer is wavy, and the waves of each layer are overlapped and fitted; At least one connecting spring (3) connects two adjacent stacked wave springs, so that the first wave valley (11) and the second wave peak (21) of the two adjacent stacked wave springs are opposed to each other, and the first wave peak (12) and the second wave valley (22) are arranged opposite to each other. The plurality of stacked wave springs and the connecting spring (3) are formed by integrally winding the same sheet metal wire; the connecting spring (3) is arranged between the first wave peak (12) and the second wave valley (22) of two adjacent stacked wave springs, one end of which is connected to the first wave valley (11) of the bottom layer of the stacked wave spring arranged above, and the other end is connected to the second wave peak (21) of the top layer of the stacked wave spring arranged below; the connecting spring (3) includes a first section (31) fitted and connected to the bottom layer of the stacked wave spring arranged above, a second section (32) fitted and connected to the top layer of the stacked wave spring arranged below, and an oblique line section (33) connecting the first section (31) and the second section (32); the lengths of the first section (31) and the second section (32) are both 1 / 6-1 / 4 of the length of one wave.

2. The stacked top-to-top wave spring according to claim 1, characterized in that: The connection points between the oblique line segment (33) and the first segment (31) and the second segment (32) are all arc transition connections.

3. The stacked top-to-top wave spring according to claim 1, characterized in that: The connecting spring (3) is in a flat linear shape.

4. The stacked top-to-top wave spring according to claim 1, characterized in that: The connecting spring (3) is a semi-wave-shaped spring that fits tightly with the superimposed wave spring arranged above or below.

5. The stacked top-to-top wave spring according to any one of claims 1 to 4, characterized in that: The wave shape is sinusoidal.

6. The stacked top-to-top wave spring according to claim 5, characterized in that: Each layer of the stacked wave spring includes at least two sine waves.

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