Elastic structural part and elastic component

Abstract

The utility model provides an elastic structural member and an elastic component, the elastic structural member includes an elastic part in a spiral winding shape, and rigid parts are respectively arranged at both ends of the elastic part, and the cross-sectional area of ​​the spiral winding part of the elastic part is configured as follows: from the starting end and the end end of the spirally wound elastic part connected to the two rigid parts, the cross-sectional area changes in a gradually decreasing trend toward the middle thereof, respectively, to achieve a change from rigid to flexible, and from flexible to rigid. Applying this scheme, on the one hand, under the same stress, the strain of the rigid part is relatively small, which can avoid instability due to work under the action of external load; on the other hand, the elastic part can obtain a bearing capacity approaching equal strength with a gradually changing non-equal rigidity, and participate in work with the rigid part as a whole, so that the structural bearing is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to an elastic structural part and an elastic component. Background Art

[0002] As we all know, traditional torsion springs are formed by spiral winding with a geometric shape of equal cross-section. In the application scenario, the two ends of the torsion spring are fixed to other components. When the other components rotate around the center of the spring, the torsion spring can store and release angular energy, generating torque or rotational force to pull them back to their original position. However, under the condition of large torsional loads, the geometric shape with equal cross-sections at both ends is difficult to achieve equal stress distribution under the action of external loads to obtain the required strength and rigidity, and it is easy to become unstable and difficult to do work reliably. Moreover, when the torsional work amplitude is low, the range of its spiral structure area participating in elastic strain is small, which limits its ability to do elastic work and cannot fully exert the overall performance of the spiral structure in a wide range of sizes.

[0003] In addition, once its structural dimensions, geometric shape and geometric form are determined, its elastic bearing capacity is fixed.

[0004] In view of this, it is urgent to optimize the structure of the spiral elastic structural member to overcome the above technical defects. Utility Model Content

[0005] In view of the above-mentioned defects, the technical problem solved by the present invention is to provide an elastic structural member and an elastic component to solve the instability problem existing in the existing torsion spring bearing and the problem of limited working capacity of the elastic bearing.

[0006] The elastic structural member provided by the utility model comprises an elastic part in a spirally coiled shape, and rigid parts are respectively arranged at both ends of the elastic part. The cross-sectional area of ​​the spirally coiled part of the elastic part is configured as follows: from the starting end and the end end of the spirally coiled elastic part connected to the two rigid parts, the cross-sectional area changes in a gradually decreasing trend toward the middle thereof.

[0007] Preferably, the cross-section of the spirally wound portion of the elastic portion is circular, elliptical or rectangular.

[0008] Preferably, the gradually decreasing trend change is configured to gradually decrease based on the outer ring of the spirally wound part of the elastic part.

[0009] Preferably, the gradually decreasing trend change is configured to gradually decrease based on the inner ring of the spirally wound portion of the elastic portion.

[0010] Preferably, at least two elastic parts are provided.

[0011] Preferably, the at least two elastic parts are arranged in series or in parallel.

[0012] The utility model also provides an elastic component, comprising the elastic structural member as described above, and also comprising an elastic plug, wherein the elastic plug is arranged in the inner hole of the spirally wound elastic part, and the elastic modulus of the material of the elastic plug is smaller than the elastic modulus of the material of the elastic part.

[0013] Preferably, two stoppers and an adjusting bolt are further included, wherein the two stoppers are respectively arranged at two axial ends of the elastic plug, and the adjusting bolt passes through the elastic plug and the stoppers to adjust the axial distance between the two stoppers.

[0014] Preferably, the stopper is a stop gasket.

[0015] Preferably, the stopper is a conical stopper, the small diameter end of the conical stopper is arranged toward the through hole in the middle of the elastic plug, and can be inserted and embedded in the through hole.

[0016] In view of the existing torsion spring-type load-bearing elastic structure, this scheme innovatively proposes an elastic structural part. Specifically, rigid parts are respectively arranged at both ends of the spirally wound elastic part of the elastic structural part. The cross-sectional area of ​​the spirally wound part of the elastic part is configured as follows: from the starting end and the end end of the spirally wound elastic part connected by the two rigid parts, the cross-sectional area changes gradually toward the middle thereof, respectively, so as to realize the change of the elastic structural part from rigid to flexible and from flexible to rigid. In other words, the structural cross-section of the spirally wound part is a non-uniform cross-section. Due to the gradual change of the cross-sectional area of ​​the spiral structure, the elastic strain generated by the elastic part during torsion work can be distributed over a large range. In this way, on the one hand, under the same stress, the strain of the rigid part is relatively small, which can avoid instability in work under the action of external load; on the other hand, the elastic part can obtain a load-bearing capacity close to equal strength with the gradually changing non-uniform rigidity, and participate in work with the rigid part as a whole, so that the structural load-bearing is safer and more reliable.

[0017] In the preferred embodiment of the utility model, an elastic plug is also included, which is arranged in the inner hole of the spirally wound elastic part, and the elastic modulus of the material of the elastic plug is smaller than that of the material of the elastic part. With such arrangement, the stress generated by the deformation of the elastic part during torsion work can be partially absorbed and stored by the elastic plug, and at the same time, it can also assist in providing the force of rebound work when the spiral structure is deformed and restored to the initial geometric shape, so as to adjust the elastic threshold. In addition, under the adjustment and compensation effect of the elastic plug, the possibility of stress concentration area appearing in the structure during the load-bearing process can be further improved.

[0018] In another preferred embodiment of the utility model, two stoppers and adjusting bolts are further included. The axial distance between the two stoppers can be changed by adjusting the adjusting bolts, thereby axially squeezing the elastic plug to achieve a change in radial size. Based on the change in the expansion stress of the elastic plug, corresponding elastic auxiliary compensation capability is provided, which has good adaptability.

[0019] In another preferred embodiment of the present invention, the stopper is a conical stopper. Thus, after the conical stopper is embedded in the through hole of the elastic plug, the expansion stress generated by squeezing the elastic plug gradually decreases from both ends to the middle. The radial dimension change is achieved based on the axial squeezing of the elastic plug, providing corresponding elastic auxiliary compensation capability to meet the different needs under different usage conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the assembly relationship of the elastic components in the specific implementation manner;

[0022] Figure 2 , Figure 3 and Figure 4 Schematic diagrams showing changes in cross-sections of three different shapes of the elastic portion are shown respectively;

[0023] Figure 5 This is a schematic structural diagram of the elastic structural member described in Example 1;

[0024] Figure 6 for Figure 5 Schematic diagram of the load-bearing structure change of the elastic structural member shown in;

[0025] Figure 7 is a schematic diagram of a variable cross section of an elastic portion;

[0026] Figure 8 is a schematic diagram of another variable cross-section of an elastic portion;

[0027] Fig. 9 A schematic diagram of the compression deformation of the elastic plug is shown;

[0028] Fig.10 is a schematic diagram of the structure of another elastic plug;

[0029] Fig.11 is a schematic diagram of the structure of another elastic plug;

[0030] Fig.12 It is a schematic diagram of the assembly relationship of another elastic component described in the specific implementation manner;

[0031] Fig.13 for Fig.12 Schematic diagram of bearing stress of elastic structural member shown in;

[0032] Fig.14 It is a schematic diagram of the assembly relationship of another elastic component described in the specific implementation manner;

[0033] Fig.15 for Fig.14 Schematic diagram of the bearing stress of the elastic structural member shown in

[0034] Fig.16 This is a schematic structural diagram of the elastic structural member described in Example 2;

[0035] Fig.17 This is a schematic diagram of the structure of the elastic structural member described in Example 3;

[0036] Fig.18 This is a schematic structural diagram of the elastic structural member described in Example 4;

[0037] Fig.19 This is a schematic structural diagram of the elastic structural member described in Example 5;

[0038] Fig. 20 This is a schematic diagram of the structure of the elastic structural member described in Example 6;

[0039] Fig.21 This is a schematic structural diagram of the elastic structural member described in Example 7;

[0040] Fig. 22 This is a schematic diagram of the structure of the elastic structural member described in Example 8;

[0041] Fig.23 This is a schematic diagram of the structure of the elastic structural member described in Example 9.

[0042] In the figure:

[0043] Elastic component 10;

[0044] Elastic structural member 1, elastic part 1-1, inner hole 1-1-1, first rigid part 1-2, second rigid part 1-3, elastic plug 2, through hole 21, stop gasket 3, conical stopper 3a, conical stopper part 3b-1, adjusting bolt 4. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] Embodiment 1:

[0047] See also Figure 1 , which shows a schematic diagram of the assembly relationship of the elastic component described in this embodiment.

[0048] The elastic component 10 includes an elastic structure 1, which includes a spirally wound elastic part 1-1 and rigid parts arranged at both ends of the elastic part 1-1. The first rigid part 1-2 is connected to one end of the elastic part 1-1, and the second rigid part 1-3 is connected to the other end of the elastic part 1-1.

[0049] Here, the rigid parts at both ends of the elastic part 1-1 are used to connect with other components in the use condition. Under the action of external load, the elastic part 1-1 can be deformed under the action of external load, and based on the deformation of the elastic part 1-1, the rigid part can be displaced synchronously with other components in the use condition. That is to say, under the same stress, the strain of the rigid part is relatively small, which can avoid work instability under the action of external load.

[0050] The elastic part 1-1 has a non-uniform cross-section structure, for example, Figure 1 The two positions indicated by the mark O' in the figure are the starting point and the ending point of the spiral winding part, respectively. Figure 1 The position indicated by the mark O is the middle of the spiral winding part. The cross-sectional area of ​​the spiral winding part of the elastic part 1-1 is configured as follows: from the starting end and the end end of the spirally wound elastic part 1-1 connected to the two rigid parts, it changes in a gradually decreasing trend toward the middle. The structural cross-section of the spirally wound part is a non-uniform cross-section. Due to the gradual change of the cross-section of the spiral structure, the elastic strain generated by the elastic part 1-1 during torsion work can be distributed over a large range. In this way, the elastic part 1-1 can obtain a bearing capacity approaching equal strength with a gradual non-uniform rigidity, participate in the work as a whole with the rigid part, and the structural bearing is safer and more reliable.

[0051] Please also see Figure 2 , Figure 3 and Figure 4 , respectively showing schematic diagrams of changes in the cross-sections of three different shapes of the elastic part.

[0052] in, Figure 2 The cross section of the elastic portion shown is circular. Figure 2 Figure (a) shows Figure 1 The cross section at the position marked O in the figure is: Figure 2 Figure (b) shows Figure 1 The cross section at the position marked O′.

[0053] in, Figure 3 The cross section of the elastic portion is elliptical. Figure 3 Figure (a) shows Figure 1 The cross section at the position marked O in the figure is: Figure 3 Figure (b) shows Figure 1 The cross section at the position marked O′.

[0054] in, Figure 4 The cross section of the elastic portion shown is rectangular. Figure 4 Figure (a) shows Figure 1 The cross section at the position marked O in the figure is: Figure 4 Figure (b) shows Figure 1 The cross section at the position marked O′.

[0055] Please also see Figure 5 and Figure 6 ,in, Figure 5 is a schematic structural diagram of the elastic structural member 1, Figure 5 This is a view formed along the spiral winding axis of the elastic part 1-1. For details, please refer to Figure 1 The projection direction is shown by arrow A. Figure 6 for Figure 5 Schematic diagram of the load-bearing structure change of the elastic structural member shown in.

[0056] like Figure 5 As shown, the elastic structural member 1 is a symmetrical structure relative to the axis of the spiral winding, and the first rigid part 1-2 and the second rigid part 1-3 extend in opposite directions in the same direction. The extension direction of the first rigid part 1-2 and the second rigid part 1-3 is equal to the reverse angle α of the symmetry center line. For example, the angle α can be 90 degrees.

[0057] During the load-bearing process, the shape of the elastic structural member 1 changes under the action of the bending moment M as shown in the following figure: Figure 6As shown. The solid line in the figure shows the structural geometry in the initial state of work, and the dotted line in the figure shows the geometry after the spiral structure of the present structure undergoes torsional deformation and the rigid parts on both ends are displaced. Specifically, relative to the bending moment formed by the load, the torsional moment formed on the elastic part 1-1 is continuously transmitted to the middle part along the spiral direction, so that the overall structure of the spiral area can distribute the elastic strain and stress corresponding to the torsional moment over a large range, thereby integrating the elastic capacity over a large range, and effectively avoiding the concentration of elastic stress, while increasing the work done by the reciprocating displacement of the rigid parts located at the two ends, and having a higher load-bearing capacity. In particular, the above technical advantages are particularly significant in the process of bearing large dynamic loads.

[0058] Here, the cross-sectional area of ​​the elastic portion 1 - 1 may decrease gradually from the starting end and the end end to the middle portion (point “O”) using different gradual references.

[0059] See also Figure 7 , which is a schematic diagram of a variable cross-section of an elastic part. Figure 7 As shown, the outer ring of the spirally wound elastic part 1-1 is gradually reduced as a reference, wherein the dotted line 1-1a of the clockwise spiral and the dotted line 1-1b of the counterclockwise spiral respectively indicate the change of the non-cylindrical geometric shape of the outer ring formed from the starting end and the end end; that is, the outer ring of the elastic part 1-1 is not cylindrical, and the inner ring of the elastic part 1-1 is a circular cylinder with equal and concentric diameters in each section.

[0060] See also Figure 8 , which is a schematic diagram of a variable cross-section of another elastic part. Figure 8 As shown, the inner ring of the spirally wound elastic part 1-1 is gradually reduced as a reference, wherein the dotted line 1-1a of the clockwise spiral expansion and the dotted line 1-1b of the counterclockwise spiral expansion respectively indicate the change of the non-cylindrical geometric shape of the inner ring formed from the starting end and the end end; that is, the inner ring of the elastic part 1-1 is not cylindrical, and the outer ring of the elastic part 1-1 is a circular cylinder with equal and concentric diameters in each cross section.

[0061] In order to improve the adjustment and compensation ability of the elastic threshold, Figure 1 As shown, an elastic plug 2 is also provided in the inner hole 1-1-1 of the spirally wound elastic part 1-1, and the elastic modulus of the material of the elastic plug 2 is smaller than the elastic modulus of the material of the elastic part 1-1; that is, the elastic plug 2 is embedded in the inner hole at the center of the elastic part 1-1. In this way, the stress generated by the deformation of the elastic part 1-1 during torsion work can be partially absorbed and stored by the elastic plug 2. At the same time, when the spiral structure is deformed and restored to its initial geometric shape, it can assist in providing the force of rebound work to achieve the adjustment of the elastic threshold. In addition, under the adjustment and compensation effect of the elastic plug 2, the possibility of stress concentration areas appearing in the structure during the load-bearing process can be further improved.

[0062] Furthermore, stop gaskets 3 may be provided at both axial ends of the elastic plug 2. Figure 1 As shown, the adjusting bolt 4 passes through the elastic plug 2 and the stop gasket 3, and the axial distance between the two stop gaskets 3 can be changed by adjusting the adjusting bolt 4, thereby axially squeezing the elastic plug 2 to achieve a change in radial size, thereby providing corresponding elastic auxiliary compensation capability based on the change in the expansion stress of the elastic plug 2, and having good adaptability. It should be understood that the above adjustment based on the threaded fastener can be achieved by using the existing technology, so it is not repeated. That is, the smaller the axial distance between the two stop gaskets 3, the smaller the axial size of the elastic plug 2, and the larger the expansion stress formed after the radial size is increased, the larger the compensation stress acting on the elastic part 1-1, the smaller the elastic deformation amplitude of the elastic part 1-1 under the torsional moment, and the smaller the displacement work amplitude of the rigid parts at both ends; conversely, the larger the axial distance between the two stop gaskets 3, the smaller the compensation stress acting on the elastic part 1-1, the larger the elastic deformation amplitude of the elastic part 1-1 under the torsional moment, and the larger the displacement work amplitude of the rigid parts at both ends.

[0063] like Fig. 9 As shown in the figure, the compression deformation diagram of the elastic plug 2 is shown. After the cylindrical elastic plug 2 expands, it tends to be drum-shaped as shown by the dotted line in the figure, and different expansion amplitudes and stresses are formed at different cross-sectional positions (as shown by the arrows in the figure). It can be understood that the position with large expansion amplitude and large stress will weaken the torsional deformation at the corresponding position of the elastic part 1-1, and can enhance the working capacity of the spiral structure in the process of resetting the initial shape.

[0064] Under different use conditions, the elastic threshold (work intensity and amplitude) of the overall structure can be quickly formed by adjusting the tightening degree of the bolt 4. It has good operability.

[0065] The specific shape of the elastic plug 2 can be determined according to the working conditions of the application scenario. In addition to the cylindrical elastic plug 2, other structural forms can also be used. Fig.10 , This figure is a schematic diagram of the structure of another elastic plug, Fig.10 The elastic plug 2 shown in the figure is a nearly waist-drum shape with the generatrix concave. Fig.11 , this figure is a schematic diagram of the structure of another elastic plug, Fig.11 The elastic plug 2 shown is a partially concave nearly cylindrical shape. Specifically, for the matching elastic portion 1-1, different compensation capabilities are obtained at different cross-sectional positions, rather than being limited to uniformly assisting in providing rebound work force in the circumferential direction.

[0066] In addition, to further enhance the differentiation of auxiliary compensation adjustment, a conical stop can be used. Fig.12 and Fig.13,in, Fig.12 This is a schematic diagram of the assembly relationship of another elastic component described in a specific implementation manner, Fig.13 for Fig.12 In order to clearly illustrate the elastic component 10 and the elastic component 10 described in this scheme Figure 1 The differences and connections between the schemes shown are that the same functional components and structures in the figures are marked with the same symbols.

[0067] like Fig.12 As shown, the stopper for squeezing the elastic plug 2 is a conical stopper 3a. The two conical stoppers 3a are respectively located at the axial ends of the elastic plug 2, and the small diameter end of the conical stopper 3a is arranged toward the through hole 21 in the middle of the elastic plug 2, and can be inserted and embedded in the through hole.

[0068] After the conical stopper 3a is inserted into the through hole of the elastic plug 2, Fig.13 As shown by the middle arrow, the expansion stress generated by squeezing the elastic plug 2 gradually decreases from both ends to the middle, and the axial distance between the two conical stoppers 3a can be changed by adjusting the adjustment bolt 4, wherein the conical stopper 3a at one end of the elastic plug 2 can be formed integrally with the adjustment bolt 4, and the external thread at the other end of the adjustment bolt 4 is adapted to the threaded hole of the conical stopper 3a at the other end of the elastic plug 2 to achieve the adjustment of the axial distance. In this way, the elastic plug 2 is axially squeezed to achieve the change of radial dimension, provide corresponding elastic auxiliary compensation ability, have good adaptability, and meet the different requirements under different use conditions. At the same time, it can weaken the torsional work process and avoid the possibility of instability at the beginning and end of the spirally wound elastic part.

[0069] In addition, it is also possible to provide conical surface extrusion only for the outer ring at the start end and the outer ring at the end end of the threaded elastic part 1-1. Fig.14 and Fig.15 ,in, Fig.14 This is another schematic diagram of the assembly relationship of the elastic component in the specific implementation manner. Fig.15 for Fig.14 In order to clearly illustrate the elastic component 10 and the elastic component 10 described in this scheme Figure 1 The differences and connections between the schemes shown are that the same functional components and structures in the figures are marked with the same symbols.

[0070] like Fig.14As shown, the stop gasket 3b used for squeezing the elastic plug 2 has a conical stopper 3b-1 protruding toward the elastic plug 2. The two stop gaskets 3b are respectively located at the axial ends of the elastic plug 2. The small diameter end of the conical stopper 3b-1 is arranged toward the through hole 21 in the middle of the elastic plug 2, and can be inserted and embedded in the through hole. The axial dimension h of the conical stopper 3b-1 extending into the through hole 21 is radially aligned with the outer ring of the starting end and the outer ring of the end end of the elastic part 1-1. In this way, the depth of the extrusion formed is located at the outer ring end of the corresponding side of the structural elastic part 1-1. At the same time, the extrusion effect at both ends can transfer the expansion stress downward, the internal expansion stress is increased, and the difference in expansion stress between various regions of the structural elastic part in the axial direction can be weakened.

[0071] Embodiment 2:

[0072] See also Fig.16 , which is a schematic diagram of the structure of the elastic structural member of this embodiment. In order to clearly show the difference and connection between this solution and the first embodiment, the same functional components and structures are marked with the same symbols in the figure.

[0073] Compared with the elastic structural member described in the first embodiment, the difference of this solution is that the reverse angle β between the extension direction of the first rigid part 1-2 and the second rigid part 1-3 and the symmetry center line is less than 90 degrees. During the load-bearing process, the solid line in the figure shows the structural geometry of the initial state of work, and the dotted line in the figure shows the geometry of the spiral structure after torsion deformation under the action of the bending moment M and displacement of the rigid parts at both ends.

[0074] The other structures and connection relationships are the same as those in the first embodiment and will not be described in detail here.

[0075] Embodiment three:

[0076] See also Fig.17 , which is a schematic diagram of the structure of the elastic structural member of this embodiment. In order to clearly show the difference and connection between this solution and the above-mentioned embodiment, the same functional components and structures are marked with the same symbols in the figure.

[0077] Compared with the elastic structural member described in the previous embodiment, the difference of this solution is that the reverse angle γ between the extension direction of the first rigid part 1-2 and the second rigid part 1-3 and the symmetry center line is greater than 90 degrees. During the load-bearing process, the solid line in the figure shows the structural geometry of the initial state of work, and the dotted line in the figure shows the geometry of the spiral structure after torsion deformation under the action of the bending moment M and displacement of the rigid parts at both ends.

[0078] The other structures and connection relationships are the same as those in the above-mentioned embodiment and will not be described in detail here.

[0079] Embodiment 4:

[0080] See also Fig.18 , which is a schematic diagram of the structure of the elastic structural member of this embodiment. In order to clearly show the difference and connection between this solution and the above-mentioned embodiment, the same functional components and structures are marked with the same symbols in the figure.

[0081] Compared with the elastic structural member described in the previous embodiment, the difference of this solution is that the first rigid part 1-2 is fixedly arranged, and the second rigid part 1-3 can be displaced under the action of the bending moment M. During the load-bearing process, the solid line in the figure shows the geometric shape of the structure in the initial state of work, and the dotted line in the figure shows the geometric shape of the spiral structure after torsion deformation occurs under the action of the bending moment M and the rigid parts on both ends are displaced.

[0082] Of course, the elastic structural member 1 may also be an asymmetric structure relative to the spiral winding axis.

[0083] The other structures and connection relationships are the same as those in the above-mentioned embodiment and will not be described in detail here.

[0084] Embodiment five:

[0085] See also Fig.19 , which is a schematic diagram of the structure of the elastic structural member of this embodiment. In order to clearly show the difference and connection between this solution and the above-mentioned embodiment, the same functional components and structures are marked with the same symbols in the figure.

[0086] Compared with the elastic structural member described in the previous embodiment, the difference of this solution is that the outer ring or the inner ring of the spirally wound elastic part 1-1 is elliptical.

[0087] The other structures and connection relationships are the same as those in the above-mentioned embodiment and will not be described in detail here.

[0088] Embodiment six:

[0089] See also Fig. 20 , which is a schematic diagram of the structure of the elastic structural member of this embodiment. In order to clearly show the difference and connection between this solution and the above-mentioned embodiment, the same functional components and structures are marked with the same symbols in the figure.

[0090] Compared with the elastic structural member described in the previous embodiment, the difference of this scheme is that: the elastic structural member includes two elastic parts 1-1, and the two elastic parts 1-1 are arranged in series; that is, the starting end of one elastic part 1-1 is connected to the first rigid part 1-2, and the end end is connected to the starting end of the other elastic part 1-1, and the end end of the other elastic part 1-1 is connected to the second rigid part 1-3.

[0091] Preferably, the spiral winding directions of the two elastic parts 1 - 1 may be the same. Other structures and connection relationships are the same as those in the above embodiment and will not be described in detail here.

[0092] Embodiment seven:

[0093] See also Fig.21 , which is a schematic diagram of the structure of the elastic structural member of this embodiment. In order to clearly show the difference and connection between this solution and the seventh embodiment, the same functional components and structures in the figure are marked with the same symbols.

[0094] Compared with the elastic structure described in the seventh embodiment, the present solution is different in that the elastic structure comprises three elastic parts 1-1, which are arranged in series, that is, in two adjacent elastic parts 1-1, the starting end of one elastic part 1-1 is connected to the ending end of the other elastic part 1-1.

[0095] Preferably, the spiral winding directions of the three elastic parts 1 - 1 are the same. Other structures and connection relationships are the same as those in the above embodiment and will not be described in detail here.

[0096] Embodiment eight:

[0097] See also Fig. 22 , which is a schematic diagram of the structure of the elastic structural member of this embodiment. In order to clearly show the difference and connection between this solution and the above-mentioned embodiment, the same functional components and structures are marked with the same symbols in the figure.

[0098] Compared with the elastic structure described in the previous embodiment, the difference of this solution is that the elastic structure 1 includes two elastic parts 1-1, and the two elastic parts 1-1 are arranged in parallel. That is, the starting ends of the two elastic parts 1-1 are connected to a first rigid part 1-2, and the end ends of the two elastic parts 1-1 are respectively connected to the corresponding second rigid parts 1-3.

[0099] The other structures and connection relationships are the same as those in the above-mentioned embodiment and will not be described in detail here.

[0100] Embodiment nine:

[0101] See also Fig.23 , which is a schematic diagram of the structure of the elastic structural member of this embodiment. In order to clearly show the difference and connection between this solution and the eighth embodiment, the same functional components and structures in the figure are marked with the same symbols.

[0102] Compared with the elastic structural member described in the eighth embodiment, the present solution is different in that the elastic structural member 1 includes two elastic parts 1 - 1 with different arrangement forms.

[0103] The other structures and connection relationships are the same as those in the above-mentioned embodiment and will not be described in detail here.

[0104] It should be understood that the rigid portion at the end of the elastic structural member 1 in the aforementioned embodiments may adopt different structural forms and is not limited to the structure shown in the figures.

[0105] It should be noted that the terms "comprises", "includes" or any other variations thereof used in this document are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0106] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An elastic structural member, characterized in that: It includes an elastic part in a spiral winding shape, and rigid parts are respectively arranged at both ends of the elastic part. The cross-sectional area of ​​the spirally wound part of the elastic part is configured as: starting from the starting end and the end end of the spirally wound elastic part connected to the two rigid parts, it changes in a gradually decreasing trend towards the middle thereof.

2. The elastic structural member according to claim 1, characterized in that: The cross section of the spirally wound portion of the elastic portion is circular, elliptical or rectangular.

3. The elastic structural member according to claim 1 or 2, characterized in that: The gradually decreasing trend change is configured to gradually decrease based on the outer ring of the spirally wound part of the elastic part.

4. The elastic structural member according to claim 1 or 2, characterized in that: The gradually decreasing trend change is configured to gradually decrease based on the inner ring of the spirally wound part of the elastic part.

5. The elastic structural member according to claim 1 or 2, characterized in that: The number of the elastic parts is at least two.

6. The elastic structural member according to claim 5, characterized in that: The at least two elastic parts are arranged in series or in parallel.

7. An elastic component, characterized in that: The elastic structural member comprises the elastic structural member according to any one of claims 1 to 6, further comprising an elastic plug, wherein the elastic plug is arranged in the inner hole of the spirally wound elastic part, and the elastic modulus of the material of the elastic plug is smaller than the elastic modulus of the material of the elastic part.

8. The elastic component according to claim 7, characterized in that: It also includes two stoppers and an adjusting bolt. The two stoppers are respectively arranged at two axial ends of the elastic plug. The adjusting bolt passes through the elastic plug and the stoppers to adjust the axial distance between the two stoppers.

9. The elastic component according to claim 8, characterized in that: The stopper is a stop gasket.

10. The elastic component according to claim 8, characterized in that: The stopper is a conical stopper, the small diameter end of which is arranged toward the through hole in the middle of the elastic plug and can be inserted and embedded in the through hole.

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