Novel torsion spring rotating shaft
By introducing a rotatable ring wheel structure into the torsion spring shaft, the wear and noise problems caused by friction between the torsion spring and the shaft are solved, resulting in a longer service life and a better user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-24
AI Technical Summary
The existing torsion spring shaft suffers from severe wear and noise due to rigid friction between the torsion spring and the shaft during use, which affects its service life and user experience.
A novel torsion spring shaft is designed, which uses a rotatable ring wheel mounted on the shaft to cooperate with the torsion spring, avoiding direct rigid contact between the torsion spring and the shaft, and providing rotational damping and counteracting gravity through an elastic component.
It reduces friction and wear between the torsion spring and the shaft, lowers noise, extends service life, and improves the user experience.
Smart Images
Figure CN224033473U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to torsional spring rotating shaft technical field especially relates to a novel torsional spring rotating shaft. BACKGROUND
[0002] Torsional spring rotating shaft is a kind of component for the pivotal connection rotating part, it is widely used in various fields in daily life because it has the characteristics of providing damping and eliminating gravity influence;For example, it is applied in the hinge of door and window to facilitate the opening and closing and hovering of door and window;Or it is applied in notebook computer to facilitate the opening and closing and hovering of notebook computer.
[0003] However, the built-in torsional spring of the existing torsional spring rotating shaft will continuously rub with the shaft rod when being reeled, which not only aggravates the wear of torsional spring and shaft rod, reduces the service life, but also produces large noise, affects the use experience.
[0004] Therefore, it is necessary to design a novel torsional spring rotating shaft to solve the above problems. UTILITY MODEL CONTENTS
[0005] TECHNICAL PROBLEM SOLVED
[0006] The utility model provides a novel torsional spring rotating shaft, can reduce wear and tear and reduce noise, to prolong the service life and improve the use experience.
[0007] TECHNICAL SCHEME
[0008] In order to achieve the above object, the utility model provides the following technical scheme:
[0009] A novel torsional spring rotating shaft, including shaft body, elastic component and rolling component, the shaft body includes left rotation shell, right rotation shell and shaft rod, the right rotation shell is equipped with the plug-in block of rotatablely inserting the left rotation shell, and the right rotation shell is equipped with rotatable turntable inside, the left rotation shell is equipped with fixed fastening disc inside, the shaft rod is coaxially penetrated fastening disc, plug-in block and turntable in turn, and the both ends of shaft rod are respectively installed with the spring piece of abutting fastening disc and turntable;The elastic component includes the first torsional spring in the left rotation shell, the first torsional spring is coaxially sleeved on the shaft rod, and the both torsional arms of first torsional spring are connected with fastening disc and plug-in block respectively;The rolling component includes the first ring wheel in the left rotation shell, the first ring wheel is coaxial and rotatably installed on the shaft rod, and the spring ring part of first torsional spring can abut against the first ring wheel with the reeling of first torsional spring.
[0010] Preferably, the first shaft sleeve is coaxially installed in the left rotation shell, and the first ring wheel is rotatably sleeved on the first shaft sleeve.
[0011] Preferably, the left rotating shell is internally provided with a left abutting post sleeved with the shaft, the first shaft sleeve is in sliding fit with the shaft, and the two ends of the first shaft sleeve can abut against the left abutting post and the plug respectively.
[0012] Preferably, the first ring wheel is provided with a plurality of linear arrays on the first shaft sleeve, the plurality of first ring wheels correspond to each coil part of the first torsion spring respectively, and the outer diameter of any first ring wheel is not less than the outer diameter of the left abutting post.
[0013] Preferably, the cross-sectional width of any first ring wheel is not greater than the cross-sectional width of the coil of the first torsion spring, so as to ensure that each first ring wheel only corresponds to contact with one coil of the first torsion spring.
[0014] Preferably, the elastic assembly further comprises a second torsion spring located in the right rotating shell, the second torsion spring is coaxially sleeved with the shaft, and the two torsion arms of the second torsion spring are connected with the rotating disc and the plug respectively; the rolling assembly further comprises a second ring wheel located in the right rotating shell, the second ring wheel is coaxially and rotatably installed on the shaft, and one coil part of the second torsion spring can abut against the second ring wheel with the winding of the second torsion spring.
[0015] Preferably, the shaft is coaxially installed with a second shaft sleeve in the right rotating shell, and the second ring wheel is rotatably sleeved on the second shaft sleeve.
[0016] Preferably, the right rotating shell is internally provided with a right abutting post sleeved with the shaft on the inner side of the plug, the second shaft sleeve is in sliding fit with the shaft, and the two ends of the second shaft sleeve can abut against the right abutting post and the rotating disc respectively.
[0017] Preferably, the second ring wheel is provided with a plurality of linear arrays on the second shaft sleeve, the plurality of second ring wheels correspond to each coil part of the second torsion spring respectively, and the outer diameter of any second ring wheel is not less than the outer diameter of the right abutting post.
[0018] Preferably, the cross-sectional width of any second ring wheel is not greater than the cross-sectional width of the coil of the second torsion spring, so as to ensure that each second ring wheel only corresponds to contact with one coil of the second torsion spring.
[0019] Preferably, the left rotating shell is internally provided with a left abutting post sleeved with the shaft, the first shaft sleeve is in sliding fit with the shaft, and the two ends of the first shaft sleeve can abut against the left abutting post and the plug respectively.
[0020] (Three) beneficial effects
[0021] This utility model provides a novel torsion spring shaft. The shaft abuts against the fastening plate of the left rotating shell and the turntable of the right rotating shell through a spring sheet, allowing the left and right rotating shells to rotate relative to each other and providing rotational damping. The design of the first torsion spring enables the shaft to counteract gravity. By installing a rotatable first ring wheel on the shaft to cooperate with the first torsion spring, rigid collisions and strong friction between the first torsion spring and the shaft are avoided, thereby reducing wear on parts, lowering noise, extending service life, and improving the user experience. Attached Figure Description
[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0023] Figure 1 A schematic diagram of the overall structure of this utility model is shown. Figure 1 ;
[0024] Figure 2 A schematic diagram of the overall structure of this utility model is shown. Figure 2 ;
[0025] Figure 3 It shows Figure 2 AA section view;
[0026] Figure 4 It shows Figure 2 BB cross-sectional view;
[0027] Figure 5 A perspective view of the overall structure of this utility model is shown;
[0028] Figure 6 An exploded view of the overall structure of this utility model is shown. Figure 1 ;
[0029] Figure 7 An exploded view of the overall structure of this utility model is shown. Figure 2 ;
[0030] Figure 8 A schematic diagram of the structure of the left shell of this utility model is shown;
[0031] Figure 9 A schematic diagram of the structure of the right shell of this utility model is shown;
[0032] Figure 10 An exploded view of the shaft and rolling assembly of this utility model is shown.
[0033] In the figure: 1 shaft body, 10 shaft rod, 100 elastic sheet, 101 first shaft sleeve, 102 second shaft sleeve, 11 left rotating shell, 111 fastening disc, 112 left abutting column, 113 first supporting rod, 12 right rotating shell, 120 insertion block, 121 rotating disc, 122 right abutting column, 123 second supporting rod, 2 elastic assembly, 21 first torsion spring, 22 second torsion spring, 3 rolling assembly, 31 first ring wheel, 32 second ring wheel, 4 mounting seat, 5 supporting seat. DETAILED DESCRIPTION
[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present application. It can be understood that the drawings are only provided for reference and illustration, and are not used to limit the present application. The connection relationship shown in the drawings is only for the purpose of clear description, and does not limit the connection mode.
[0035] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or a middle component can exist at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the technology belongs. It should be noted that, unless otherwise 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, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.
[0036] It should be noted that 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 based on the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the present application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0037] Reference is made to the accompanying Figure 1 -Appendix Figure 10The utility model provides a new torsion spring rotating shaft, including shaft body 1, elastic component 2 and rolling component 3, shaft body 1 includes left rotation shell 11, right rotation shell 12 and shaft 10, is equipped with the plug -in block 120 of rotatablely inserting left rotation shell 11 on right rotation shell 12, and right rotation shell 12 inside is equipped with rotatable turntable 121, left rotation shell 11 inside is equipped with fixed fastening disc 111, shaft 10 is coaxial in turn and penetrates fastening disc 111, plug -in block 120 and turntable 121, and the both ends of shaft 10 are installed respectively with the elastic sheet 100 of abutting fastening disc 111 and turntable 121, elastic component 2 includes the first torsion spring 21 in left rotation shell 11, the first torsion spring 21 is coaxial sleeve and sets up shaft 10, and the both torsion arms of first torsion spring 21 are connected fastening disc 111 and plug -in block 120 respectively, rolling component 3 includes the first ring 31 in left rotation shell 11, and the first ring 31 is coaxial and rotatablely installed on shaft 10, and the one spring ring part of first torsion spring 21 can be with the winding of first torsion spring 21 and abuts the first ring 31.
[0038] Specifically, under normal circumstances, the first torsion spring 21 is in the initial state without deformation, the both ends of the shaft 10 are abutted against the fastening disc 111 and the turntable 121 through the elastic sheets 100, and the left rotation shell 11 and the right rotation shell 12 have rotation damping under the pressure of the elastic sheets 100; when connecting the article (not shown in the figure) on the left rotation shell 11 or the right rotation shell 12, the first torsion spring 21 specifically offsets the gravity of the article to provide stable support for the article, and if the left rotation shell 11 or the right rotation shell 12 is rotated at this time, the first torsion spring 21 is deformed and wound to have elastic potential, so that the article is easily lifted.
[0039] In the process of mutual rotation of the left rotation shell 11 and the right rotation shell 12 to drive the deformation and winding of the first torsion spring 21, the one spring ring part of the first torsion spring 21 gradually approaches the first ring 31, and when the spring ring part abuts the first ring 31, the first ring 31 slightly rotates around the shaft 10 to buffer the force of the first torsion spring 21; and in the process of rotating the left rotation shell 11 or the right rotation shell 12 to release the energy of the first torsion spring 21 and restore it, and the one spring ring part of the first torsion spring 21 gradually separates from the first ring 31, the spring ring part also drives the first ring 31 to slightly rotate to reduce friction and noise.
[0040] In summary, the shaft 10 of the utility model abuts against the fastening disc 111 of the left rotation shell 11 and the turntable 121 of the right rotation shell 12 through the elastic sheets 100, so that the left rotation shell 11 and the right rotation shell 12 can be mutually rotated and have rotation damping, the shaft body 1 has the effect of offsetting gravity by designing the first torsion spring 21, the first ring 31 rotatable on the shaft 10 is installed to cooperate with the use of the first torsion spring 21, so as to avoid rigid collision and strong friction between the first torsion spring 21 and the shaft 10, thereby reducing the wear of parts and reducing noise, prolonging the service life and improving the use experience.
[0041] It should be noted that the design point of the present application is the cooperation of the first torsional spring 21 and the first ring wheel 31, as the shaft 10 connects the left rotating shell 11 and the right rotating shell 12, the shaft 10 is tightly clamped against the fastening disc 111 and the rotating disc 121 through the elastic sheet 100 to have rotation damping, and the first torsional spring 21 is installed in the left rotating shell 11 and the right rotating shell 12 to offset the gravity, which is the same as or similar to the structure scheme of the existing torsional spring rotating shaft, belongs to the prior art, and therefore the working principle thereof is not analyzed in more detail and described in more detail in the present application.
[0042] Referring to the accompanying drawings Figure 3 - the accompanying drawings Figure 8 , the shaft 10 is coaxially installed with the first shaft sleeve 101 in the left rotating shell 11, and the first ring wheel 31 is rotatably sleeved on the first shaft sleeve 101.
[0043] Specifically, in use, the first ring wheel 31 will rotate around the first shaft sleeve 101 to avoid direct action of the first ring wheel 31 on the shaft 10, and at the same time, since the first shaft sleeve 101 is fixed on the shaft 10, no rotational friction will occur between them, so that the service life of the shaft 10 can be effectively prolonged; when the first ring wheel 31 or the first shaft sleeve 101 is damaged, the user can directly replace it, improving the maintenance convenience.
[0044] Referring to the accompanying drawings Figure 3 - the accompanying drawings Figure 8 , the left rotating shell 11 is provided with a left abutting column 112 sleeving the shaft 10, the first shaft sleeve 101 is in sliding fit with the shaft 10, and the two ends of the first shaft sleeve 101 can abut against the left abutting column 112 and the plug 120, respectively.
[0045] Specifically, during assembly, the first ring wheel 31 is first sleeved on the first shaft sleeve 101, then the first shaft sleeve 101 is sleeved on the shaft 10 and abuts against the plug 120, and then the left rotating shell 11 is moved to drive the left abutting column 112 to abut against the first shaft sleeve 101; this design facilitates the assembly and disassembly of the first shaft sleeve 101, thereby facilitating the early assembly and later maintenance.
[0046] In addition, the first shaft sleeve 101 also rotates with the shaft 10, which makes the first shaft sleeve 101 also have a rotating tendency, so that the first torsional spring 21 can adaptively rotate to reduce the force when deforming and contracting, further improving the noise reduction effect.
[0047] Referring to the accompanying drawings Figure 3 - the accompanying drawings Figure 8 , the first ring wheel 31 is provided with a plurality of first ring wheels 31 arranged in a straight line on the first shaft sleeve 101, the plurality of first ring wheels 31 correspond to each spring coil part of the first torsional spring 21 one by one, and the outer diameter of any first ring wheel 31 is not less than the outer diameter of the left abutting column 112.
[0048] Specifically, the design of the plurality of first ring wheels 31 can increase the contact surface with the first torsion spring 21, so that the force of the first torsion spring 21 can be more stably buffered; and the design that the outer diameter of the first ring wheel 31 is not less than the outer diameter of the left abutting column 112 can avoid the first torsion spring 21 first contacting and rubbing the left abutting column 112 to generate noise.
[0049] It should be noted that, in order to further reduce noise and ensure the rotation stability of each first ring wheel 31, lubricating liquid can be added between the first shaft sleeve 101 and the first ring wheels 31.
[0050] Referring to the accompanying drawings Figure 3 - the accompanying drawings Figure 8 If the two spring rings of the first torsion spring 21 simultaneously act on the same first ring wheel 31, the first ring wheel 31 may not rotate, in order to solve this problem, the cross-sectional width of any first ring wheel 31 is not greater than the cross-sectional width of the spring ring of the first torsion spring 21; this design can ensure that the first ring wheel 31 only corresponds to one spring ring of the first torsion spring 21; of course, in actual use, if it does not affect use, the cross-sectional width of the first ring wheel 31 is slightly greater than the cross-sectional width of the spring ring of the first torsion spring 21, which is also allowed, and the present application does not limit this.
[0051] Referring to the accompanying drawings Figure 3 - the accompanying drawings Figure 9 The elastic assembly 2 further comprises a second torsion spring 22 located in the right rotating shell 12, the second torsion spring 22 is coaxially arranged on the shaft 10, and the two torsion arms of the second torsion spring 22 are respectively connected to the rotating disc 121 and the plug 120; the rolling assembly 3 further comprises a second ring wheel 32 located in the right rotating shell 12, the second ring wheel 32 is coaxially and rotatably arranged on the shaft 10, and one spring ring part of the second torsion spring 22 can abut against the second ring wheel 32 with the winding of the second torsion spring 22.
[0052] Specifically, in the process of mutual rotation of the left rotating shell 11 and the right rotating shell 12 to drive the first torsion spring 21 to deform and wind, the second torsion spring 22 also deforms and winds synchronously, and one spring ring part of the second torsion spring 22 gradually approaches the second ring wheel 32 to drive the first ring wheel 31 to adaptively and slightly rotate around the shaft 10 to buffer the force of the second torsion spring 22; similarly, in the process of rotating the left rotating shell 11 or the right rotating shell 12 to release the energy of the first torsion spring 21 to recover, the second torsion spring 22 synchronously releases the energy to recover, and one spring ring part of the second torsion spring 22 gradually separates from the second ring wheel 32.
[0053] It should be noted that the second torsion spring 22 cooperates with the second ring wheel 32 to have the same effect as the first torsion spring 21 cooperates with the first ring wheel 31, which is not repeated in the present application; and since the shaft body 1 simultaneously has the first torsion spring 21 and the second torsion spring 22, the shaft body 1 can abut against more gravity.
[0054] Referring to the drawings Figure 3 -Appendix Figure 9 The shaft 10 is coaxially arranged in the right rotating shell 12 with a second shaft sleeve 102, and the second ring wheel 32 is rotatably sleeved on the second shaft sleeve 102.
[0055] Specifically, in use, the second ring wheel 32 will rotate around the second shaft sleeve 102 to avoid direct action of the second ring wheel 32 on the shaft 10, and since the second shaft sleeve 102 is fixed on the shaft 10, no rotational friction will occur between the two, thereby effectively prolonging the service life of the shaft 10; when the second ring wheel 32 or the second shaft sleeve 102 is damaged, the user can directly replace it, improving the maintenance convenience.
[0056] Referring to the drawings Figure 3 -Appendix Figure 9 The right rotating shell 12 is provided with a right abutting column 122 sleeving the shaft 10 on the inner side of the plug 120, the second shaft sleeve 102 is in sliding fit with the shaft 10, and the two ends of the second shaft sleeve 102 can abut against the right abutting column 122 and the rotating disc 121 respectively.
[0057] Specifically, in assembly, the second ring wheel 32 is first sleeved on the second shaft sleeve 102, then the second shaft sleeve 102 is sleeved on the shaft 10 and abuts against the right abutting block, and then the rotating disc 121 is installed and abuts against the first shaft sleeve 101; this design facilitates the assembly and disassembly of the second shaft sleeve 102, thereby facilitating the early assembly and later maintenance.
[0058] In addition, the second shaft sleeve 102 is also in rotational fit with the shaft 10, which makes the second shaft sleeve 102 also have a rotational tendency, thereby reducing the acting force through the possible adaptive rotation of the second torsional spring 22 in deformation and contraction, further improving the noise reduction effect.
[0059] Referring to the drawings Figure 3 -Appendix Figure 9 The second ring wheel 32 is provided with a plurality of second ring wheels 32 arranged in a straight line array on the second shaft sleeve 102, the plurality of second ring wheels 32 one-to-one correspond to the spring coil parts of the second torsional spring 22, and the outer diameter of any second ring wheel 32 is not less than the outer diameter of the right abutting column 122.
[0060] Specifically, the design of the plurality of second ring wheels 32 can increase the contact surface with the second torsional spring 22, thereby more stably buffering the acting force of the second torsional spring 22; and the design that the outer diameter of the second ring wheel 32 is not less than the outer diameter of the right abutting column 122 can avoid the second torsional spring 22 first contacting and rubbing the right abutting column 122 to generate noise.
[0061] It should be noted that, in order to further reduce noise and ensure the rotational stability of each second ring wheel 32, lubricating liquid can be added between the second shaft sleeve 102 and the second ring wheels 32.
[0062] Referring to the drawings Figure 3 -attached Figure 9 If the two spring rings of the second torsion spring 22 simultaneously act on the same second ring wheel 32, it may cause the second ring wheel 32 to be unable to rotate, in order to solve this problem, the cross-sectional width of any second ring wheel 32 is not greater than the cross-sectional width of the spring ring of the second torsion spring 22; this design can ensure that the second ring wheel 32 only corresponds to one spring ring of the second torsion spring 22; of course, in actual use, if it does not affect use, the cross-sectional width of the second ring wheel 32 is slightly greater than the cross-sectional width of the spring ring of the second torsion spring 22, which is also allowed, and the present application does not limit this.
[0063] Referring to the drawings Figure 1 -attached Figure 7 The left rotating shell 11 is provided with a first supporting rod 113 for connecting the mounting seat 4, and the right rotating shell 12 is provided with a second supporting rod 123 for connecting the supporting seat 5; the mounting seat 4 is used for placing electronic devices such as tablet computers and displays (not shown in the figure), and the supporting seat 5 is placed on a plane.
[0064] Specifically, in use, the supporting seat 5 is installed on the desktop or wall surface, so that the electronic device placed on the mounting seat 4 has a rotating range through the shaft body 1.
[0065] Among them, the elastic sheet 100 at both ends of the shaft rod 10 is used to provide rotation damping, and the first torsion spring 21 and the second torsion spring 22 can synchronously offset the gravity of the electronic device, so as to facilitate the rotation of the left shell to lift the electronic device and change the hovering position of the electronic device, and the design of the first ring wheel 31 and the second ring wheel 32 can reduce the noise generated by the shaft body 1 and reduce the wear of the shaft body 1 during the adjustment of the position of the electronic device.
[0066] It should be noted that in addition to the above use scenarios, the torsion spring rotating shaft can also be used in other mechanical structures, that is, the first supporting rod 113 and the second supporting rod 123 can be connected to the corresponding parts of the related mechanical structure, and the present application does not limit this.
[0067] In the specification and claims of the present application, the words "comprise / comprising" and the words "have / having" and their conjugates, are used to specify the presence of stated features, numbers, steps or components, but do not exclude the presence or addition of one or more other features, numbers, steps, components or combinations thereof.
[0068] Some features of the present application are described in different embodiments for clarity, however, these features can also be described in a single embodiment. Conversely, some features of the present application are described in a single embodiment for simplicity, however, these features can also be described in different embodiments, alone or in any suitable combination.
[0069] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A novel torsion spring shaft, characterized in that, include: The shaft (1) includes a left rotating shell (11), a right rotating shell (12) and a shaft (10). The right rotating shell (12) is provided with a plug (120) that can be rotatably inserted into the left rotating shell (11). The right rotating shell (12) is provided with a rotatable turntable (121) inside. The left rotating shell (11) is provided with a fixed fastening plate (111) inside. The shaft (10) passes through the fastening plate (111), the plug (120) and the turntable (121) coaxially in sequence. The two ends of the shaft (10) are respectively equipped with spring pieces (100) that abut against the fastening plate (111) and the turntable (121). The elastic component (2) includes a first torsion spring (21) located inside the left-turning shell (11). The first torsion spring (21) is coaxially sleeved on the shaft (10), and the two torsion arms of the first torsion spring (21) are respectively connected to the fastening plate (111) and the insert (120). The rolling assembly (3) includes a first ring wheel (31) located inside the left-turning shell (11). The first ring wheel (31) is coaxially and rotatably mounted on the shaft (10), and a spring coil portion of the first torsion spring (21) can abut against the first ring wheel (31) as the first torsion spring (21) is wound up.
2. The novel torsion spring shaft according to claim 1, characterized in that, The shaft (10) is coaxially mounted with a first bushing (101) inside the left-turning shell (11), and the first ring wheel (31) is rotatably sleeved on the first bushing (101).
3. The novel torsion spring shaft according to claim 2, characterized in that, The left-turning shell (11) is provided with a left abutment (112) that sleeves the shaft (10). The first bushing (101) is slidably engaged with the shaft (10), and the two ends of the first bushing (101) can respectively abut the left abutment (112) and the insert (120).
4. A novel torsion spring shaft according to claim 3, characterized in that, The first ring wheel (31) is provided in a plurality of linear arrays on the first bushing (101). The plurality of first ring wheels (31) correspond one-to-one with each spring coil part of the first torsion spring (21), and the outer diameter of any first ring wheel (31) is not less than the outer diameter of the left abutment (112).
5. A novel torsion spring shaft according to claim 4, characterized in that, The cross-sectional width of any of the first ring wheel (31) is not greater than the cross-sectional width of the first torsion spring (21) coil.
6. A novel torsion spring shaft according to any one of claims 1-5, characterized in that, The elastic component (2) further includes a second torsion spring (22) located inside the right-turning shell (12). The second torsion spring (22) is coaxially sleeved on the shaft (10), and the two torsion arms of the second torsion spring (22) are respectively connected to the turntable (121) and the insert block (120). The rolling component (3) further includes a second ring wheel (32) located inside the right-turning shell (12). The second ring wheel (32) is coaxially and rotatably mounted on the shaft (10), and one spring coil of the second torsion spring (22) can abut against the second ring wheel (32) as the second torsion spring (22) is wound up.
7. A novel torsion spring shaft according to claim 6, characterized in that, The shaft (10) is coaxially mounted with a second bushing (102) inside the right-turning shell (12), and the second ring wheel (32) is rotatably sleeved on the second bushing (102).
8. A novel torsion spring shaft according to claim 7, characterized in that, The right rotating shell (12) has a right abutment (122) on the inner side of the insert block (120) for sleeved shaft (10). The second bushing (102) is slidably engaged with the shaft (10), and the two ends of the second bushing (102) can respectively abut the right abutment (122) and the turntable (121).
9. A novel torsion spring shaft according to claim 8, characterized in that, The second ring wheel (32) is provided in a plurality of linear arrays on the second bushing (102). The plurality of second ring wheels (32) correspond one-to-one with each spring coil part of the second torsion spring (22), and the outer diameter of any second ring wheel (32) is not less than the outer diameter of the right abutment post (122).
10. A novel torsion spring shaft according to claim 9, characterized in that, The cross-sectional width of any of the second ring wheel (32) is not greater than the cross-sectional width of the spring coil of the second torsion spring (22).