Adjustable elastic force adjusting device and spring system

Abstract

The utility model relates to the technical field of hardware parts, in particular to an adjustable elasticity adjusting device and a spring system.The adjustable elasticity adjusting device comprises a sleeve, an elasticity adjusting assembly, a compression spring, a force transmission piece and a force application piece, and the two ends of the compression spring abut against the elasticity adjusting assembly and the force transmission piece respectively; under the condition of no external force, the compression spring enables the force transmission piece to be located at a first position in the sleeve; when the elastic force adjusting assembly is controlled, the compression spring can be compressed or released so as to change the elastic force of the compression spring acting on the force transmission piece. When the axial external force borne by the force application piece in the direction of the compression spring is larger than the elastic force exerted on the force transmission piece by the compression spring, relative position movement of instruments arranged at the two ends of the spring device is achieved; by means of the mode, the problems that in the prior art, a spring device is fixed in elastic force and single in use scene are solved.

Description

Technical Field

[0001] This utility model relates to the field of hardware components technology, and in particular to an adjustable elastic adjustment device and spring system. Background Technology

[0002] In many industrial and mechanical applications, such as the connections of fitness equipment and doors / windows, spring devices are needed to adjust the relative movement force between two equipment components. Typically, one end of the spring device is located in one equipment component, and the other end is located in the other. Pulling the two equipment components apart requires overcoming the spring's extension force. In this application, the spring's extension force is usually fixed. The user stretches the other equipment component to make the force exerted on it greater than the spring force, thus pulling the two equipment components apart and achieving the purpose of exercise.

[0003] However, gym equipment is designed for both men and women. For the same piece of equipment, a man needs 80N of force to pull apart the two connected parts, while a woman only needs 50N. But because the spring extension value of existing spring devices is fixed, for example, preset to 80N, gym equipment equipped with this device is only suitable for men. It is difficult for women to stretch the two different parts. This requires the use of spring devices with different extension values ​​on different gym equipment, which makes the application scenarios of spring devices very limited and unable to adapt to various different usage scenarios. As a result, manufacturers need to produce a variety of spring devices with different elastic extension values, which is not conducive to production.

[0004] Therefore, the aforementioned technical problems need to be solved. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model proposes an adjustable elastic force adjustment device, which aims to realize the elastic force adjustment of the spring device, so as to overcome the problem that the existing spring device has a fixed elastic force and a limited range of applications.

[0006] To solve the above-mentioned technical problems, the basic technical solution proposed by this utility model is as follows:

[0007] An adjustable elastic adjustment device includes a sleeve, an elastic adjustment component, a compression spring, a force transmission component, and a force application component. The sleeve has a hollow portion. The elastic adjustment component, the compression spring, and the force transmission component are arranged from top to bottom within the hollow portion of the sleeve.

[0008] The two ends of the compression spring abut against the elastic force adjustment component and the force transmission component respectively, and under non-external force conditions, the compression spring causes the force transmission component to be located in the first position inside the sleeve; when the elastic force adjustment component is controlled, it can compress or release the compression spring to change the magnitude of the elastic force of the compression spring acting on the force transmission component;

[0009] The force-applying component is partially sleeved inside the sleeve, with one end extending to the outside of the sleeve and the other end used to abut against the force-transmitting component to transmit force along the sleeve axis. When the axial external force on the force-applying component toward the compression spring is greater than the elastic force of the compression spring acting on the force-transmitting component, the force-applying component can drive the force-transmitting component to slide along the sleeve axis to a second position to compress the compression spring.

[0010] Furthermore, it includes a sub-sleeve, wherein an axially provided slide is provided inside the sub-sleeve for the force-applying component to reciprocate axially;

[0011] When the force-applying component is subjected to force, the end of the force-applying component moves axially and repeatedly in the slide rail, and when it enters the slide rail of the sub-sleeve, it can abut against the force-transmitting component to transmit force.

[0012] Furthermore, the inner side of the bottom of the sleeve has at least two sets of snap-fit ​​components;

[0013] Each set of the snap-fit ​​assembly includes a snap ring and a washer;

[0014] One set of the snap-fit ​​components is located above the sub-sleeve and is defined as the upper snap-fit ​​component; the other set of the snap-fit ​​components is located below the sub-sleeve and is defined as the lower snap-fit ​​component.

[0015] The upper snap-fit ​​assembly cooperates with the lower snap-fit ​​assembly to constrain the sub-sleeve to the bottom inner side of the sleeve.

[0016] Furthermore, the sleeve has a sealing ring inside;

[0017] The upper surface of the sealing ring abuts against the lower surface of the sub-sleeve, and the lower surface of the sealing ring abuts against the surface of the lower snap-fit ​​assembly.

[0018] Furthermore, the elastic adjustment assembly includes a moving part and an adjusting spindle;

[0019] The movable component is sleeved on the outer periphery of the adjusting main shaft and is helically connected to the adjusting main shaft; the lower part of the movable component is connected to the top of the compression spring.

[0020] When the adjusting spindle is rotated by an external force, the moving part moves axially downward or upward relative to the adjusting spindle to change the extension and contraction state of the compression spring.

[0021] Furthermore, the elastic adjustment assembly also includes a locking member, and the adjusting spindle that cooperates with this locking member has a positioning groove;

[0022] The locking element falls into the positioning groove to restrict the rotation of the adjusting spindle.

[0023] Furthermore, this includes having a top cover;

[0024] The top cover has an assembly area, the bottom of the assembly area has a channel, the bottom of the adjusting spindle extends from the channel into the hollow part of the sleeve, and the end of the adjusting spindle is exposed outside the top cover;

[0025] The assembly area includes a thrust bearing, the inner surface of which abuts against the outer surface of the adjusting spindle, and the outer surface of which abuts against the inner surface of the assembly area.

[0026] In addition, a spring system is proposed, configured to have:

[0027] The application connector includes a first connecting part and a second connecting part that are coaxially arranged on both sides;

[0028] At least two adjustable elastic adjustment devices, each of which is one of the adjustable elastic adjustment devices described above;

[0029] The first connecting part and the second connecting part are respectively coaxially connected to the force-applying component of an adjustable elastic adjustment device;

[0030] When the application connector is driven to move along one side of the axial direction, it drives the corresponding force-applying component of an adjustable elastic adjustment device to compress the spring through the force transmission component, while the force-applying component of another adjustable elastic adjustment device moves away from its corresponding force transmission component.

[0031] Furthermore, when no external force is applied, the two force-applying components connected by the application connector abut against the corresponding force-transmitting components, and the corresponding force-transmitting components are both located in the first position.

[0032] Furthermore, there is a margin of movement between the two force-applying components and the corresponding force-transmitting components connected by the application connector.

[0033] The beneficial effects of this utility model are:

[0034] This utility model discloses an adjustable spring force adjustment device, typically positioned between two components. The spring force of this device is adjustable; depending on different usage scenarios, the spring can be adjusted to achieve different spring force values. During use, the user needs to overcome these spring force values ​​to allow relative movement between the two components. Specifically, this technical solution includes a sleeve, a spring force adjustment assembly, a compression spring, a force transmission component, and a force application component. The sleeve has a hollow portion. The spring force adjustment assembly, compression spring, and force transmission component are arranged from top to bottom within the hollow portion of the sleeve. The two ends of the compression spring respectively abut against… The elastic force adjustment component and the force transmission component are connected, and under non-external force conditions, the compression spring causes the force transmission component to be located in a first position within the sleeve; when the elastic force adjustment component is controlled, it can compress or release the compression spring to change the magnitude of the elastic force of the compression spring acting on the force transmission component; when the axial external force on the force application component in the direction of the compression spring is greater than the elastic force of the compression spring acting on the force transmission component, the relative position movement of the instruments located at both ends of the spring device is achieved; this method overcomes the problem of fixed elastic force and limited application scenarios of the spring device in the prior art. Attached Figure Description

[0035] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of the present utility model;

[0036] Figure 2 This is a cross-sectional view of the adjustable spring force adjustment device in the compressed state of the compression spring according to Embodiment 1 of this utility model;

[0037] Figure 3 This is a diagram showing the moving part of this utility model in a downward axial direction;

[0038] Figure 4 This is a structural diagram of a first embodiment of the spring system of this utility model;

[0039] Figure 5 This is a structural diagram of a second embodiment of the spring system of this utility model;

[0040] Explanation of reference numerals in the attached figures:

[0041] 1-Sleeve, 2-Elastic adjustment assembly, 21-Moving part, 22-Adjusting spindle, 23-Locking part, 24-Adjusting spring, 221-Positioning groove, 222-End, 3-Compression spring, 4-Force transmission part, 5-Force application part, 6-Snap-fit ​​assembly, 6A-Upper snap-fit ​​assembly, 6B-Lower snap-fit ​​assembly, 61-Snap-fit, 62-Washer, 7-Sub-sleeve, 71-Slide, 72-Outer cylinder, 73-Inner cylinder, 8-Sealing ring, 9-Top cover, 91-Assembly area, 92-Channel, 93-Small spring, 94-Snap-fit ​​assembly, 10-Thrust bearing, A-First position, B-Second position, C-Hollow part, D-Movement allowance space, F-Outer shell, 100-Application connector, 101-First connection part, 102-Second connection part, 200-Adjustable elastic adjustment device. Detailed Implementation

[0042] The following will be combined with the appendix Figure 1 To be continued Figure 4 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0043] In daily life, spring devices are widely used in fitness equipment and various door installations. However, in existing applications, the elastic force of various spring devices is fixed, and specific applications require specific fixed elastic forces. This forces manufacturers to produce spring devices with different elastic forces, resulting in a wide variety of spring device models, which is not only detrimental to production but also creates inventory pressure.

[0044] In response, the inventors have provided an adjustable spring force adjustment device, the purpose of which is to enable the initial spring force of the spring device to be adjusted according to the actual use scenario. By overcoming the initial spring force of the spring device, the user can utilize the spring force performance to meet the use needs of specific scenarios.

[0045] Detailed, such as Figures 1 to 2 An adjustable elastic adjustment device is shown, comprising a housing F and a sleeve 1. The housing F is fitted over the outside of the sleeve 1 to prevent dust from entering the sleeve 1. The sleeve 1 has a hollow portion C, and both ends of the sleeve 1 are open, with the hollow portion C communicating with the two open ends.

[0046] It also includes an elastic adjustment component 2, a compression spring 3, a force transmission component 4, and a force application component 5. The elastic adjustment component 2, the compression spring 3, and the force transmission component 4 are arranged from top to bottom in the hollow part C of the sleeve 1; the two ends of the compression spring 3 abut against the elastic adjustment component 2 and the force transmission component 4, respectively.

[0047] This technical solution controls the elastic force adjustment component 2 to squeeze the compression spring 3 so that the compression spring 3 generates an elastic force on the force transmission component 4. The magnitude of this elastic force varies with the controlled intensity of the elastic force adjustment component 2.

[0048] The force-transmitting member 4 is connected to the other end of the force-transmitting member 5. The force-transmitting member 5 is partially sleeved inside the sleeve 1, and one end of it extends to the outside of the sleeve 1. The other end of the force-transmitting member 4 can be used to abut against the force-transmitting member 5 to realize the force transmission along the axial direction of the sleeve 1. When the force-transmitting member 5 is subjected to an axial external force toward the compression spring 3, which is greater than the elastic force of the compression spring 3 acting on the force-transmitting member 5, the force-transmitting member 5 can drive the force-transmitting member 5 to slide along the axial direction of the sleeve 1 to the second position B to compress the compression spring 3.

[0049] It should be understood that when the force transmission component 4 slides along the axial direction of the sleeve 1 to the second position B, that is, at this time the axial external force on the force application component 5 in the direction of the compression spring 3 is greater than the elastic force of the compression spring 3 acting on the force transmission component 4, the user can use this method to apply the adjustable elastic force spring device to applications that require different pushing forces to push the corresponding application components, thus meeting the usage needs of different force scenarios.

[0050] For example, to prevent children from pushing open the freezer door, an adult is required to open the latch. The latch requires 80N of force from an adult, which a child, lacking strength, cannot exert. Therefore, the elastic adjustment component 2 can compress the compression spring 3, generating an 80N elastic force. An adult can then overcome this 80N force to open the freezer door, while a child, lacking sufficient strength, cannot.

[0051] Of course, this technical solution is not limited to the above-mentioned use scenario of ice storage doors, but can also be applied to use scenarios such as gym equipment or ergonomic applications.

[0052] In practical use, when the elasticity adjustment component 2 is controlled, the compression spring 3 can be compressed or released to change the magnitude of the elastic force exerted by the compression spring 3 on the force transmission component 4.

[0053] In actual use, the elastic adjustment component 2 is controlled to compress or release the compression spring 3. Specifically, the elastic adjustment component 2 includes a moving part 21 and an adjusting spindle 22; the outer end of the adjusting spindle 22 has a hexagonal hole for inserting a hexagonal screwdriver. The user can control the rotation of the adjusting spindle 22 by turning the screwdriver. When the adjusting spindle 22 rotates forward, the moving part 21, which is sleeved on the outer circumference of the adjusting spindle 22 and helically connected to it, moves axially downward relative to the adjusting spindle 22 toward the sleeve 1. Figure 3 As shown. It should be noted that, since the two radial ends of the moving part 21 are respectively connected to the sleeve 1, and the sleeve 1 has a limiting groove at the position where the ends of the moving part 21 are connected, the limiting groove is located in the axial direction of the sleeve 1. When the moving part 21 moves axially along the sleeve, the ends of the moving part 21 are restricted by the limiting groove. Therefore, the moving part 21 can only move axially along the sleeve 1.

[0054] Furthermore, since the lower surface of the moving member 21 abuts against the top of the compression spring 3, therefore, as Figure 3 As shown, when the adjusting spindle 22 rotates in the forward direction, the moving member 21 moves axially downward to compress the compression spring 3. The compression spring 3 transmits the spring force generated by the compression to the force transmission member 5, thereby generating an elastic force on the force transmission member 5.

[0055] Conversely, when the adjusting spindle 22 rotates in the same direction, the moving member 21 moves axially upward relative to the adjusting spindle 22 toward the sleeve 1, that is, the state of the moving member 21 and the compression spring 3 changes from... Figure 3 Become Figure 1 The state is adjusted to release the compression spring 3, thereby reducing the elastic force of the compression spring 3 acting on the force transmission member 5.

[0056] For example, according to the elastic formula F = kx, where F is the elastic force, k is the elastic coefficient of the material, and x is the amount of spring deformation, i.e., the change in spring height. In an adjustable elastic force adjustment device, k, i.e., the elastic coefficient, is determined by the material properties of the compression spring 3 itself. Therefore, the elastic coefficient k is fixed, and the amount of expansion and contraction of x increases as the moving part 21 moves downward along the axial direction of the sleeve 1. Therefore, according to the elastic formula F = kx, the elastic force F also tends to increase as the moving part 21 moves downward along the axial direction. Thus, by controlling the forward rotation of the adjusting shaft 22 to further move the moving part 21 axially downward, the force exerted by the compression spring 3 on the force transmission member 4 can be increased. Conversely, by rotating the adjusting shaft 22 in the opposite direction, the moving part 21 can be moved upward along the axial direction, thereby reducing the force exerted by the compression spring 3 on the force transmission member 4. Therefore, the elastic force of the compression spring 3 can be adjusted by controlling the adjusting shaft 22.

[0057] When not in use, i.e., under non-external force conditions, the compression spring 3 causes the force transmission member 4 to be located at the first position A inside the sleeve 1, as shown in the image. Figure 1 As shown, at this time, the compression spring 3 does not undergo extension or contraction deformation due to the force-applying member 5.

[0058] After adjusting the elastic force to a suitable level, the adjustable elastic force device needs to be fixed in place. Furthermore, the elastic force adjustment assembly 2 also includes a locking member 23, and the adjusting spindle 22, which cooperates with this locking member 23, has a positioning groove 221; the locking member 23 falls into the positioning groove 221 to restrict the rotation of the adjusting spindle 22.

[0059] In use, the adjusting spindle 22 is twisted by external force or equipment (such as a screwdriver). After the adjusting spindle 22 is twisted, causing the moving part 21 to move down and compress the compression spring 3 to generate the required elastic force, the adjusting spindle 22 is twisted until its positioning groove 221 is aligned with the locking part 23, so that the locking part 23 can fall into the positioning groove 221 to prevent the adjusting spindle 22 from rotating further, thereby preventing the moving part 21 from moving further.

[0060] In this embodiment, the locking member 23 is disposed in the top cover 9 assembled on the top of the sleeve 1. Specifically, the top cover 9 has an assembly area 91, which is a groove recessed inward on the surface of the top cover 9. The top of the assembly area 91 has an opening, and the bottom of the assembly area 91 has a channel 92, which communicates with the hollow portion C. During assembly, the bottom of the adjusting spindle 22 extends from the channel 92 into the hollow portion C of the sleeve 1. The end 222 of the adjusting spindle 22 passes through the channel 92 and the opening in sequence and is exposed outside the opening, i.e., the end 222 of the adjusting spindle 22 is exposed outside the top cover 9, so that the user can perform a twisting operation on the end 222 of the adjusting spindle 22.

[0061] The locking element 23 is specifically disposed on the inner wall of the channel 92. In this embodiment, the locking element 23 is a spherical positioning bead. The positioning bead is installed in a corresponding mounting groove inside the channel 92. Part of the positioning bead is accommodated in the mounting groove, and another part of the positioning bead is exposed on the inner wall surface of the channel 92. When the adjusting spindle 22, which is accommodated in the channel 92, is rotated until its positioning groove 221 is aligned with the positioning bead, the positioning bead falls into the positioning groove 221. The adjusting spring 24 abuts against the positioning bead to generate a radial elastic force toward the axis, thereby positioning the adjusting spindle 22 and preventing the adjusting spindle 22 from moving without the action of external force.

[0062] In one embodiment of the present invention, the assembly area 91 has a thrust bearing 10, the inner surface of the thrust bearing 10 abuts against the outer surface of the adjusting spindle 22, and the outer surface of the thrust bearing 22 abuts against the inner surface of the assembly area 91.

[0063] When the adjusting spindle 22 is rotated by an external force, the thrust bearing 10 can constrain the adjusting spindle 22 to rotate axially and prevent it from deviating.

[0064] In one embodiment of this utility model, a small spring 93 is provided between the top of the thrust bearing 10 and the lower part of the end 222 of the adjusting spindle 22. This allows the adjustable spring device to be disassembled by pressing the end 222 axially to compress the small spring 93, exposing the retaining ring assembly 94 from the lower groove of the top cover 9. This facilitates the removal of the retaining ring assembly 94 using tools such as retaining ring disassembly tools, further enabling the disassembly of the spring adjustment assembly 2 from the top cover 9. Furthermore, the small spring 93 also holds the end 222 in place, preventing the adjusting spindle 22 from moving axially downwards when no external force is applied.

[0065] In one embodiment of this utility model, a retaining spring assembly 94 is provided between the top cover 9 and the moving member 21. The retaining spring assembly 94 is disposed on the outer periphery of the adjusting main shaft 22 to prevent the adjusting main shaft 22 from moving axially upward. In summary, the retaining spring assembly 94 cooperates with the small spring 93 to constrain the adjusting main shaft 22 at the top of the sleeve 1, effectively preventing the adjusting main shaft 22 from moving axially upward or downward in the channel 92 when no external force is applied.

[0066] In one embodiment of this utility model, the sleeve 1 further includes a sub-sleeve 7, and the sub-sleeve 7 is provided with an axially arranged slide 71 for the force-applying member 5 to move axially back and forth; when the force-applying member 5 is subjected to force, the end of the force-applying member 5 moves axially and repeatedly in the slide 71; and when it enters the slide 71 of the sub-sleeve 7, it can abut against the force-transmitting member 4 to transmit force.

[0067] In use, when the portion of the force-applying member 5 exposed outside the sleeve 1 is subjected to force, the force-applying member 5 slides axially in the slide rail 71 until it abuts against the force-transmitting member 4, so that the force-transmitting member 4 can compress the compression spring 3. The slide rail 71 is designed to prevent the force-applying member 5 from moving radially during sliding, thus preventing deviation.

[0068] In one embodiment of this utility model, the sub-sleeve 7 includes a split design consisting of an outer sleeve 72 and an inner sleeve 73. The outer sleeve 72 is fitted around the outer periphery of the inner sleeve 73. With this design, the 72 sleeve is used for axial positioning. The inner sleeve 73 can be a linear bearing or a bushing. The inner sleeve 73 will wear after prolonged use, and the split design of the outer sleeve 72 and inner sleeve 73 facilitates the replacement of the worn inner sleeve 73.

[0069] In one embodiment of the present invention, the inner bottom side of the sleeve 1 has at least two sets of snap-fit ​​components 6; each set of snap-fit ​​components 6 includes a gasket 62 and a retaining spring 61; one set of snap-fit ​​components 6 is located above the sub-sleeve 7 and is defined as upper snap-fit ​​component 6A, and the other set of snap-fit ​​components is located below the sub-sleeve and is defined as lower snap-fit ​​component 6B; the upper snap-fit ​​component 6A and the lower snap-fit ​​component 6B cooperate to constrain the sub-sleeve 7 to the inner bottom side of the sleeve 1.

[0070] It should be understood that when the force-applying component 5 moves in the slide rail 71 under external force, the surface of the force-applying component 5 and the inner wall of the slide rail 71 will generate a certain friction force, so that the sub-sleeve 7 will move axially with the axial movement of the force-applying component 5. The upper locking assembly 6A and the lower locking assembly 6B constrain the sub-sleeve 7 to the bottom inner side of the sleeve 1, which can effectively prevent the sub-sleeve 7 from moving axially.

[0071] Furthermore, when the force-applying member 5 does not abut against the force-transmitting member 4, the force-transmitting member 4 tends to move downward due to the squeezing action of the moving member 21 on the compression spring 33, and the locking assembly 6A can prevent the force-transmitting member 4 from moving further downward.

[0072] In one embodiment of the present invention, the sleeve 1 has a sealing ring 8; the upper surface of the sealing ring 8 is disposed and abuts against the lower surface of the sub-sleeve 7, and the lower surface of the sealing ring 8 abuts against the surface of the lower snap-fit ​​assembly 6B.

[0073] It should be understood that when the force-applying component 5 reciprocates in the slide 71, the sealing ring 8 can prevent external dust from entering the interior of the spring.

[0074] In addition, a spring system is proposed, such as Figures 4 to 5 As shown, it is configured to have: an application connector 100, including a first connecting portion 101 and a second connecting portion 102 coaxially arranged on both sides; at least two adjustable elastic adjustment devices 200, each of the adjustable elastic adjustment devices 200 being an adjustable elastic adjustment device as described above; the first connecting portion 101 and the second connecting portion 102 are respectively coaxially connected to the force-applying member 5 of one adjustable elastic adjustment device 200; when the application connector 100 is driven to move along one side of the axial direction, it drives the corresponding force-applying member 5 of one adjustable elastic adjustment device 200 to compress the spring 3 through the force transmission member 4, and the force-applying member 5 of the other adjustable elastic adjustment device 200 moves away from its corresponding force transmission member 4.

[0075] In this embodiment, the application connector 100 is a grip, and the two first connecting parts 101 and the second connecting part 102 are respectively perpendicularly connected to the application connector 100. In use, an external force operates the application connector 100, causing it to move axially to the left or right. When the application connector 100 moves axially to one side, it drives the force-applying member 5 in the adjustable elastic adjustment device 200 on the same side as the movement direction to move towards its corresponding force-transmitting member 4, thereby compressing the compression spring 3 through the force-transmitting member 4. Simultaneously, the force-applying member 5 in the adjustable elastic adjustment device 200 on the other side is in a state away from its corresponding force-transmitting member 4.

[0076] In this embodiment, the force-applying component 5 and the force-transmitting component 4 have two connection states when no external force is applied. The first state is that the two force-applying components 5 connected by the application connector 100 respectively abut against the corresponding force-transmitting components 4, and the corresponding force-transmitting components 4 are both located at the first position A.

[0077] When the force-applying component 5 and the force-transmitting component 4 are in contact and not under external force, the force-applying component 5 directly transmits force to the force-transmitting component 4 once it is subjected to force. When the pushing force on the force-applying component 5 is greater than the elastic force of the compression spring 3 acting on the force-transmitting component 4, the force-transmitting component 4 moves from the first position A to the second position B, thereby squeezing the compression spring 3 to change the spring elastic force.

[0078] Another type has a movable margin D between the two force-applying members 5 and the corresponding force-transmitting members 4 connected by the application connector 100. It should be understood that in use, the force-applying member 5 needs to pass through the movable margin D under the drive of an external force to contact the force-transmitting member 4. When the force-applying member 5 contacts the force-transmitting member 4, causing the force-transmitting member 4 to move from the first position A to the second position B, the compression spring 3 is compressed, thus changing the spring force. This design is suitable for use in scenarios where the external force needs to be gradually increased to cause the force-applying member 5 to gradually contact the force-transmitting member 4 in order to change the spring force of the compression spring 3.

[0079] In summary, the adjustable elastic force adjustment device of this technical solution, through the cooperation of the elastic force adjustment component 2, the compression spring 3, the force transmission component 4, and the force application component 5, can compress or release the compression spring 3 when the elastic force adjustment component 2 is controlled, thereby changing the magnitude of the elastic force of the compression spring 3 acting on the force transmission component 4; when the axial external force on the force application component 5 towards the compression spring 3 is greater than the elastic force of the compression spring 3 acting on the force transmission component 4, the relative position movement of the instruments located at both ends of the spring device is achieved; this method overcomes the problem of fixed elastic force and limited application scenarios of the spring device in the prior art.

[0080] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An adjustable elastic force adjustment device, characterized in that: It includes a sleeve, a spring adjustment assembly, a compression spring, a force transmission component, and a force application component, wherein the sleeve has a hollow portion; the spring adjustment assembly, the compression spring, and the force transmission component are arranged from top to bottom within the hollow portion of the sleeve; The two ends of the compression spring abut against the elastic force adjustment component and the force transmission component respectively, and under non-external force conditions, the compression spring causes the force transmission component to be located in the first position inside the sleeve; when the elastic force adjustment component is controlled, it can compress or release the compression spring to change the magnitude of the elastic force of the compression spring acting on the force transmission component; The force-applying component is partially sleeved inside the sleeve, with one end extending to the outside of the sleeve and the other end used to abut against the force-transmitting component to transmit force along the sleeve axis. When the axial external force on the force-applying component toward the compression spring is greater than the elastic force of the compression spring acting on the force-transmitting component, the force-applying component can drive the force-transmitting component to slide along the sleeve axis to a second position to compress the compression spring.

2. The adjustable elastic force adjustment device as described in claim 1, characterized in that: Includes a sub-sleeve, wherein the sub-sleeve is provided with an axially oriented slide for the force-applying component to reciprocate axially; When the force-applying component is subjected to force, the end of the force-applying component moves axially and repeatedly in the slide rail, and when it enters the slide rail of the sub-sleeve, it can abut against the force-transmitting component to transmit force.

3. The adjustable elastic force adjustment device as described in claim 2, characterized in that: The inner side of the bottom of the sleeve has at least two sets of snap-fit ​​components; Each set of the snap-fit ​​assembly includes a snap ring and a washer; One set of the snap-fit ​​components is located above the sub-sleeve and is defined as the upper snap-fit ​​component; the other set of the snap-fit ​​components is located below the sub-sleeve and is defined as the lower snap-fit ​​component. The upper snap-fit ​​assembly cooperates with the lower snap-fit ​​assembly to constrain the sub-sleeve to the bottom inner side of the sleeve.

4. The adjustable elastic force adjustment device as described in claim 3, characterized in that: The sleeve has a sealing ring inside; The upper surface of the sealing ring abuts against the lower surface of the sub-sleeve, and the lower surface of the sealing ring abuts against the surface of the lower snap-fit ​​assembly.

5. The adjustable elastic force adjustment device as described in claim 1, characterized in that: The elastic adjustment assembly includes a movable component and an adjustment spindle; The movable component is sleeved on the outer periphery of the adjusting main shaft and is helically connected to the adjusting main shaft; the lower part of the movable component is connected to the top of the compression spring. When the adjusting spindle is rotated by an external force, the moving part moves axially downward or upward relative to the adjusting spindle to change the extension and contraction state of the compression spring.

6. The adjustable elastic force adjustment device as described in claim 5, characterized in that: The elastic adjustment assembly also includes a locking element, and the adjusting spindle that cooperates with the locking element has a positioning groove; The locking element falls into the positioning groove to restrict the rotation of the adjusting spindle.

7. The adjustable elastic force adjustment device as described in claim 5, characterized in that: Includes a top cover; The top cover has an assembly area, the bottom of the assembly area has a channel, the bottom of the adjusting spindle extends from the channel into the hollow part of the sleeve, and the end of the adjusting spindle is exposed outside the top cover; The assembly area includes a thrust bearing, the inner surface of which abuts against the outer surface of the adjusting spindle, and the outer surface of which abuts against the inner surface of the assembly area.

8. A spring system, characterized in that, Configured to have: The application connector includes a first connecting part and a second connecting part that are coaxially arranged on both sides; At least two adjustable elastic adjustment devices, each of the adjustable elastic adjustment devices being an adjustable elastic adjustment device as described in any one of claims 1 to 7; The first connecting part and the second connecting part are respectively coaxially connected to the force-applying component of an adjustable elastic adjustment device; When the application connector is driven to move along one side of the axial direction, it drives the corresponding force-applying component of an adjustable elastic adjustment device to compress the spring through the force transmission component, while the force-applying component of another adjustable elastic adjustment device moves away from its corresponding force transmission component.

9. A spring system as described in claim 8, characterized in that: When no external force is applied, the two force-applying components connected by the application connector abut against the corresponding force-transmitting components, and the corresponding force-transmitting components are all located in the first position.

10. A spring system as described in claim 8, characterized in that: The two force-applying components and the corresponding force-transmitting components connected by the application connector have a margin of movement.

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