Wave coil basic building unit and low-frequency vibration isolation wave spring

Abstract

The present application relates to a wave coil basic building unit and a low-frequency vibration isolation wave spring, wherein the wave coil basic building unit comprises two butt-jointed building blocks, and the two building blocks are symmetrically arranged with the connecting line as the center; each building block is continuously bent several times along the thickness direction of a plate material, and at least forms a first protruding part, a first recessed part, a second protruding part and a second recessed part, which are sequentially arranged from one end to the other end of the building block, and the position of the second protruding part is lower than that of the first protruding part, and the position of the second recessed part is lower than that of the first recessed part; the two first protruding parts of the two butt-jointed building blocks form a wave crest; and the second recessed parts of the two building blocks are respectively used to form a wave trough with the second recessed parts of the respective adjacent building blocks. The present application has a compact structure, is simple to manufacture, and has an ideal low-frequency vibration isolation function.

Description

Technical Field

[0001] The present invention relates to the technical field of springs, and in particular to a wave coil basic building unit and a low-frequency vibration isolation wave spring. Background Art

[0002] Wave springs are a common elastic mechanical part, usually a thin metal ring with several peaks and valleys. They are widely used in situations where small installation space is restricted and weight reduction and axial preload are required, such as aerospace, precision machinery, hydraulic seals and high-end motors.

[0003] At present, the well-known wave springs include functional wave springs such as high-pressure wave springs and sealing wave springs, as well as structurally improved wave springs such as open wave springs, flat spiral wave springs and multi-layer wave springs. However, given that wave springs are mostly used in axial pressure-bearing and mechanical operation situations in actual use, mechanical vibrations that affect the performance of wave springs are common. Wave springs that are exposed to mechanical vibrations for a long time are prone to insufficient restoring force or even failure due to deformation of the main body. For example, the risks of instrument loss of control, loose sealing valves, axial rotational dislocation, etc. caused by this will directly affect the user's experience of product performance (such as daily household products), and in serious cases will bring immeasurable losses (such as aerospace, hydraulic seals and high-end motor applications).

[0004] Therefore, there is an urgent need to design a wave spring that is lightweight, provides constant force compensation, and has low-frequency vibration isolation function, which can not only realize the functions of a general wave spring, but also avoid performance failure caused by vibration during use. Summary of the Invention

[0005] In view of the above problems, the purpose of the present invention is to provide a wave coil basic building unit and a low-frequency vibration isolation wave spring, which have a compact structure, simple manufacturing, and ideal low-frequency vibration isolation function.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The wave ring basic building unit described in the present invention includes two docked building blocks, and the two building blocks are symmetrically arranged with the connecting line as the center; each building block is made of a plate material that is continuously bent several times along its thickness direction to form at least a first protrusion, a first depression, a second protrusion and a second depression, and the first protrusion, the first depression, the second protrusion and the second depression are arranged in sequence from one end to the other end of the building block, and the position of the second protrusion is lower than the position of the first protrusion, and the position of the second depression is lower than the position of the first depression; the two first protrusions of the two building blocks after docking form a wave crest; the second depressions of the two building blocks are respectively used to form a wave trough with the second depressions of the adjacent building blocks.

[0008] The wave ring basic building unit is preferably such that the top of the first raised portion is a plane, the first recessed portion is an arc surface, the second raised portion is a section of inclined surface plus a section of arc surface, and the second recessed portion is a section of inclined surface plus a section of arc surface plus a section of plane.

[0009] The wave ring basic building unit, preferably, the length of the top plane of the first convex portion is L1; the radius of the arc surface of the first concave portion is R1; the distance of a section of the inclined surface of the second convex portion is L2, and the radius of the arc surface is R2; the length of a section of the inclined surface of the second concave portion is L3, the radius of the arc surface is R3, and the length of a section of the flat surface is L4; the length from the first convex portion to the second concave portion is L;

[0010] Among them: L1=L2=(2±0.5)mm, L3=(2.3±0.2)mm, L4=(1.2±0.1)mm, L=(19.5±0.5)mm, R1=(3±0.2)mm, R2=(10±0.2)mm, R3=(5±0.2)mm.

[0011] The low-frequency vibration isolation wave spring described in the present invention includes: a low-frequency vibration isolation component, a plurality of the low-frequency vibration isolation components are stacked in sequence, and the wave crests of the lower layer and the wave troughs of the upper layer of the two adjacent layers of low-frequency vibration isolation components are arranged correspondingly, and each of the low-frequency vibration isolation components is formed by circumferentially splicing a plurality of the wave ring basic building units to form an annular structure.

[0012] In the low-frequency vibration isolation wave spring, preferably, the circumferential splicing of the wave coil basic building units to form an annular structure is achieved in the following manner: the troughs of two adjacent wave coil basic building units are connected to each other.

[0013] The low-frequency vibration isolation wave spring, preferably, in the low-frequency vibration isolation component, the outer ring radius of the low-frequency vibration isolation component is R; the thickness of the wave plate material of the low-frequency vibration isolation component is t; the height from the peak to the trough of the low-frequency vibration isolation component is h; the width of the low-frequency vibration isolation component is b;

[0014] Among them: R=(38±0.5)mm, t=(0.1±0.05)mm, h=(3.6±0.1)mm, b=(10±0.1)mm.

[0015] The low-frequency vibration isolation wave spring preferably further includes a connecting unit, and the trough of the low-frequency vibration isolation component of the upper layer of two adjacent layers of low-frequency vibration isolation components is connected to the peak of the low-frequency vibration isolation component of the lower layer through the connecting unit.

[0016] The low-frequency vibration isolation wave spring is preferably configured such that the connecting unit is a buckle and a slot; the buckle is provided at the trough of the low-frequency vibration isolation component of the upper layer of two adjacent layers of low-frequency vibration isolation components, and the slot is provided at the crest of the low-frequency vibration isolation component of the lower layer; or the slot is provided at the trough of the low-frequency vibration isolation component of the upper layer of two adjacent layers of low-frequency vibration isolation components, and the buckle is provided at the crest of the low-frequency vibration isolation component of the lower layer; the buckle is connected to the slot.

[0017] The present invention has the following advantages due to the adoption of the above technical solution:

[0018] (1) The present invention can achieve the functions of a general wave spring and avoid performance failure caused by vibration during use. This has a profound impact on expanding the types of existing wave springs and is of great significance in the fields of aerospace, precision machinery, and human daily life.

[0019] (2) The present invention is lightweight, provides constant force compensation, and has a low-frequency vibration isolation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0021] Figure 1 It is a schematic structural diagram of the low-frequency vibration isolation assembly of the present invention;

[0022] Figure 2 yes Figure 1 A front view structural diagram of

[0023] Figure 3 It is a structural diagram of the basic building unit of the wave coil of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the connecting unit of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the low-frequency vibration isolation wave spring of the present invention;

[0026] Figure 6 yes Figure 3 A front view structural diagram of

[0027] Figure 7 It is the stiffness characteristic curve of the wave spring (containing 6 wave coils as basic building blocks);

[0028] Figure 8 It is the stiffness characteristic curve of the wave spring (containing 4 wave coils as basic building blocks);

[0029] Figure 9 It is the stiffness characteristic curve of the double-layer wave spring (containing 4 wave coils as basic building units).

[0030] The symbols in the accompanying drawings represent the following:

[0031] 1- basic building unit of the wave coil; 2- building block; 201- first protrusion; 202- first recess; 203- second protrusion; 204- second recess; 3- low-frequency vibration isolation component; 4- connecting unit; 401- slot; 402- buckle. DETAILED DESCRIPTION

[0032] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0033] The present invention provides a wave coil basic building unit and a low-frequency vibration isolation wave spring. Through the wave coil basic building unit with a special shape and structure, the low-frequency vibration isolation wave spring can not only realize the functions of a general wave spring, but also avoid performance failure caused by vibration during use. It is light in weight, has constant force compensation, and has a low-frequency vibration isolation function.

[0034] like Figure 2 As shown, the wave coil basic building unit 1 provided by the present invention includes two butt-jointed building blocks 2, and the two building blocks 2 are symmetrically arranged with the connecting line as the center; each building block is made of a plate material that is continuously bent several times along its thickness direction to form at least a first protrusion 201, a first recessed portion 202, a second protrusion 203, and a second recessed portion 204, and the first protrusion 201, the first recessed portion 202, the second protrusion 203, and the second recessed portion 204 are arranged in sequence from one end to the other end of the building block 2, and the position of the second protrusion 203 is lower than that of the first protrusion 201, and the position of the second recessed portion 204 is lower than that of the first recessed portion 202; as shown Figure 3 As shown, the two first protrusions 201 of the two building blocks 2 after docking form wave crests; the second concave portions 204 of the two building blocks 2 are respectively used to form wave troughs with the second concave portions of the adjacent building blocks.

[0035] In the above embodiment, preferably, Figure 6 As shown, the top of the first raised portion 201 is a plane, the first recessed portion 202 is an arcuate surface, the second raised portion 203 is a section of an inclined surface plus a section of an arcuate surface, and the second recessed portion 204 is a section of an inclined surface plus a section of an arcuate surface plus a section of a plane.

[0036] In the above embodiment, preferably, the length of the top plane of the first protrusion 201 is L1; the radius of the arc surface of the first recessed portion 202 is R1; the distance of a section of the inclined surface of the second protrusion 203 is L2, and the radius of the arc surface is R2; the length of a section of the inclined surface of the second recessed portion 204 is L3, the radius of the arc surface is R3, and the length of a section of the flat surface is L4; the length from the first protrusion to the second recessed portion is L;

[0037] Among them: L1=L2=(2±0.5)mm, L3=(2.3±0.2)mm, L4=(1.2±0.1)mm, L=(19.5±0.5)mm, R1=(3±0.2)mm, R2=(10±0.2)mm, R3=(5±0.2)mm.

[0038] like Figure 5 As shown, the present invention also provides a low-frequency vibration isolation wave spring, comprising: a low-frequency vibration isolation component 3 (see Figure 1 ), several low-frequency vibration isolation components 3 are stacked in sequence, and the wave crests of the lower layer of the two adjacent layers of low-frequency vibration isolation components 3 are arranged correspondingly to the wave troughs of the upper layer. Each low-frequency vibration isolation component 3 is composed of several (6 in this embodiment) wave ring basic building units 1 circumferentially spliced ​​to form a ring structure.

[0039] In the above embodiment, preferably, the circumferential splicing of the wave-ring basic building units to form the annular structure is achieved in the following manner: the troughs of two adjacent wave-ring basic building units are connected to each other.

[0040] In the above embodiment, preferably, Figure 2 As shown, in the low-frequency vibration isolation component 3, the outer ring radius of the low-frequency vibration isolation component is R; the thickness of the wave plate material of the low-frequency vibration isolation component is t; the height from the peak to the trough of the low-frequency vibration isolation component is h; and the width of the low-frequency vibration isolation component is b;

[0041] Among them: R=(38±0.5)mm, t=(0.1±0.05)mm, h=(3.6±0.1)mm, b=(10±0.1)mm.

[0042] In the above embodiment, preferably, the present invention further includes a connecting unit 4 , and the trough of the low-frequency vibration isolation assembly 3 of the upper layer of two adjacent layers of low-frequency vibration isolation assemblies 3 is connected to the peak of the low-frequency vibration isolation assembly 3 of the lower layer through the connecting unit 4 .

[0043] In the above embodiment, preferably, Figure 4As shown, the connecting unit 4 includes a slot 401 and a buckle 402. The buckle 402 is provided at the trough of the low-frequency vibration isolation component 3 of the upper layer of two adjacent layers of low-frequency vibration isolation components 3, and the slot 401 is provided at the peak of the low-frequency vibration isolation component 3 of the lower layer; or the slot 401 is provided at the trough of the low-frequency vibration isolation component 3 of the upper layer of two adjacent layers of low-frequency vibration isolation components 3, and the buckle 402 is provided at the peak of the low-frequency vibration isolation component 3 of the lower layer; the buckle 402 is engaged with the slot 401.

[0044] It should be noted that the quasi-zero stiffness characteristic of the wave spring has typical programmability, that is, different constant forces F can be obtained by controlling the number N of its building blocks 2. For example, Figure 7 This is the stiffness characteristic curve of the wave spring composed of 6 building blocks 2. Figure 8 This is the stiffness characteristic curve of the wave spring composed of 4 building blocks 2. Figure 9 It is a stiffness characteristic curve diagram of a double-layer wave spring composed of 4 building blocks 2.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A basic building unit of a wave coil, characterized in that: The invention comprises two butted building blocks, wherein the two building blocks are symmetrically arranged with the butted surface as the center; Each building block is formed by continuously bending a plate material several times along its thickness direction to form at least a first protrusion, a first depression, a second protrusion, and a second depression. The first protrusion, the first depression, the second protrusion, and the second depression are arranged in sequence from one end to the other end of the building block, and the position of the second protrusion is lower than that of the first protrusion, and the position of the second depression is lower than that of the first depression. The two first protrusions of the two building blocks after docking form a wave crest; The second recessed portions of the two building blocks are respectively used to form a trough with the second recessed portions of the respective adjacent building blocks; The top of the first raised portion is a plane, the first recessed portion is a curved surface, the second raised portion is a section of an inclined surface plus a section of a curved surface, and the second recessed portion is a section of an inclined surface plus a section of a curved surface plus a section of a plane; The length of the top plane of the first protrusion is L1; the radius of the arc surface of the first recess is R1; the distance of a section of the inclined surface of the second protrusion is L2, and the radius of the arc surface is R2; the length of a section of the inclined surface of the second recess is L3, the radius of the arc surface is R3, and the length of a section of the flat surface is L4; the length from the first protrusion to the second recess is L; in:

2. A low-frequency vibration isolation wave spring, characterized in that: include: A low-frequency vibration isolation component, wherein several of the low-frequency vibration isolation components are stacked in sequence, and the wave crests of the lower layer of the two adjacent layers of low-frequency vibration isolation components are arranged correspondingly to the wave troughs of the upper layer, and each of the low-frequency vibration isolation components is formed into a ring structure by circumferentially splicing several wave ring basic building units according to claim 1.

3. The low-frequency vibration isolation wave spring according to claim 2, characterized in that: The circumferential splicing of the basic wave ring building units to form a ring structure is achieved in the following manner: The troughs of two adjacent wave-loop basic building units are connected.

4. The low-frequency vibration isolation wave spring according to claim 2, characterized in that: In the low-frequency vibration isolation assembly, the outer ring radius of the low-frequency vibration isolation assembly is R; the thickness of the wave plate material of the low-frequency vibration isolation assembly is t; the height from the peak to the trough of the low-frequency vibration isolation assembly is h; and the width of the low-frequency vibration isolation assembly is b; in: mm, 、 、 mm.

5. The low-frequency vibration isolation wave spring according to claim 2, characterized in that: It also includes a connecting unit, and the trough of the low-frequency vibration isolation assembly of the upper layer and the peak of the low-frequency vibration isolation assembly of the lower layer of two adjacent layers of low-frequency vibration isolation assemblies are connected through the connecting unit.

6. The low-frequency vibration isolation wave spring according to claim 5, characterized in that: The connecting unit is a buckle and a slot. The buckle is set at the trough of the low-frequency vibration isolation assembly of the upper layer of two adjacent layers of low-frequency vibration isolation assemblies, and the slot is set at the peak of the low-frequency vibration isolation assembly of the lower layer. Alternatively, the troughs of the low-frequency vibration isolation components of the upper layer of two adjacent layers are provided with slots, and the crests of the low-frequency vibration isolation components of the lower layer are provided with buckles; The buckle is connected to the slot.

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