Spring torsion device, spring torsion system and operating device

Abstract

The utility model discloses a spring torsion device, a spring torsion system and an operating device. The spring torsion device comprises a sleeve, an axial torsion adjusting piece, a compression spring, a driven piece and a driving piece, wherein the axial torsion adjusting piece, the compression spring, the driven piece and the driving piece are arranged in the sleeve. The two ends of the compression spring abut against the axial adjusting piece and the driven piece respectively. The driving piece and the driven piece are in transmission fit through a spiral motion pair so as to drive the driven piece to move upwards to compress the compression spring and reset under the action of the compression spring after external force is removed. And the adjusting part on the main shaft is exposed through the opening at the upper end of the hollow part of the sleeve so as to realize rotary adjustment of the main shaft. In actual use, rotation control over the main shaft can be achieved by applying torque to the adjusting part, and then compression amount adjustment of the compression spring is achieved by controlling displacement of the axial torsion adjusting piece so as to meet adjustment of torsion output. In addition, the torsion system is provided with two spring torsion devices which are combined to achieve adjustment of independent torque in different angle areas, the human engineering requirement is met, and the use requirement of a user is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to torsion structure technical field especially spring torsion device, spring torsion system and operating device. BACKGROUND

[0002] Generally speaking, the torsion needs to be provided on many products to meet the use requirement. For example, the handle, the fitness equipment usually needs to be dialled in the positive and negative directions to meet the operation requirement.

[0003] The traditional handle class torsion is through such as torsion spring to realize the force. Along with the development of technology, the supply device about torsion appears various technologies. For example, the patent publication No. CN103306562A provides such technical scheme: including shell, end cover, main shaft, the shell is sealed with end cover connection, and its shell is equipped with elastic member inside;The main shaft is installed in the shaft hole of end cover and is supported by bearing, and the main shaft is equipped with key tooth or profile, and the main shaft and end cover are linked by the connecting piece equipped with spiral surface and rolling sleeve and constitute spiral rolling pair, and the connecting piece is equipped with damping member. The main shaft and end cover are linked by the connecting piece equipped with spiral surface and rolling sleeve and cooperate, realize the conversion of rotary power and linear power, and can rotate around the main shaft, make the minimum transmission loss of kinetic energy, and the maximum torque efficiency, only need to change the shape, size and quantity of spiral surface, can be suitable for different environmental occasions requirement, especially solve the distance changing technical problem of many years in the industry.

[0004] But such means can not be adjusted according to the different torsion size use demand, especially for the scene of human use, because the torsion is not adjustable, cannot meet the ergonomic design requirement of different people, that is, cannot meet the demand of different people to adjust the torsion, therefore cannot meet the actual use demand. UTILITY MODEL CONTENT

[0005] In order to overcome the deficiency of prior art, the utility model provides a spring torsion device, spring torsion system and operating device, which aims at solving the problem that the existing torsion device cannot be adjusted according to the actual use requirement.

[0006] In order to solve the above technical problems, the basic technical scheme provided by the utility model is as follows:

[0007] A spring torsion device, comprising a sleeve, the sleeve has a hollow part;The hollow part is provided with a main shaft arranged in the axial direction;The axial torsion adjusting piece, compression spring, driven piece and driving piece are arranged in the hollow part of the sleeve from top to bottom, and the axial torsion adjusting piece, compression spring, driven piece and driving piece are sleeved on the outer periphery of the main shaft from top to bottom.

[0008] The two ends of the compression spring abut against the axial adjustment member and the driven member respectively to apply elastic force to the axial torsion adjustment member and the driven member; the axial torsion adjustment member is threadedly connected with the main shaft and is in constrained cooperation with the sleeve to realize adjustment of axial reciprocating movement of the axial torsion adjustment member during rotation of the main shaft;

[0009] The driven member is in constrained cooperation with the sleeve to reciprocate along the axial direction when driven; the driving member and the driven member are in transmission cooperation through the screw pair to realize driving of the driven member to move upward to compress the compression spring when the driving member is rotated along a first direction under external force and to reset the driven member along a second direction opposite to the first direction under the compression spring after the external force is removed;

[0010] The upper end of the main shaft has an adjustment portion exposed through the upper end opening of the hollow portion of the sleeve to cooperate with an external device to realize adjustment of rotation of the main shaft.

[0011] Further, the adjustment portion is a groove formed on the top end face of the main shaft and recessed inward.

[0012] Further, the driven member and the driving member have an axial constraint rotation plane perpendicular to the axial direction at the bottom end of the screw pair, which is used to constrain the axial movement of the driven member and the driving member and provide space for transverse non-transmission rotation movement of the driven member and the driving member after the screw pair is disengaged.

[0013] Further, the opposite ends of the driven member and the driving member have force applying portions formed outward along the axial direction, each of the force applying portions has a screw surface formed obliquely along the axial direction, and the corresponding screw surfaces of the force applying portion of the driven member and the force applying portion of the driving member form the screw pair when cooperating; the axial constraint rotation plane of the driven member and the driving member is located outside the bottom of the screw surface of the respective force applying portion.

[0014] Further, the driven member and the driving member have two force applying portions uniformly distributed along the circumferential direction, and the two force applying portions of the driven member and the driving member respectively cooperate to form two pairs of the screw pair.

[0015] Further, at least a part of the driving member is exposed outside the sleeve.

[0016] Further, the main shaft is assembled and connected with the first limiting assembly at the upper end of the sleeve to constrain downward displacement of the main shaft; the lower end of the main shaft is detachably connected with the second limiting assembly, which is located below the driving member so that the driving member is at least partially located in the sleeve.

[0017] In addition, a spring torsion system is also provided, which is configured to have:

[0018] The application connecting piece comprises coaxially arranged first and second connecting parts on two sides;

[0019] two spring torque devices, each of the spring torque devices being as claimed in any one of the claims;

[0020] The first connecting part and the second connecting part are coaxially connected with driving parts of the spring torque devices respectively.

[0021] The utility model further provides a spring torque system, be configured to have:

[0022] The application connecting piece comprises coaxially arranged first and second connecting parts on two sides;

[0023] two spring torque devices, each of the spring torque devices being as claimed in any one of the claims;

[0024] The first connecting part and the second connecting part are coaxially connected with driving parts of the spring torque devices respectively.

[0025] The two spring torque devices are centrally symmetrically distributed, so that axial constraint rotation planes of the two spring torque devices are distributed on two sides of a rotation direction, and when the application connecting piece is driven to rotate, one spring torque device is in a motion contact process of a screw motion pair, and the other spring torque device is in a transverse non-transmission rotation process of the axial constraint rotation plane.

[0026] Finally, the utility model further provides a control device, which is configured to have any one of the spring torque systems described above.

[0027] The application connecting piece comprises an application part between the first and second connecting parts for realizing force application.

[0028] The utility model has the advantages of:

[0029] The utility model discloses a spring torsion device, spring torsion system and operating device, specific scheme is this spring torsion device includes sleeve and the axial torsion adjustment spare, compression spring, driven part and driving part in sleeve, the both ends of compression spring are respectively abutted axial adjustment spare and driven part for the axial torsion adjustment spare and driven part with elastic force, driving part and driven part pass through helical pair transmission cooperation to realize when driving driven part moves upward to compress compression spring and resets along the second direction opposite with first direction under the compression spring effect after the external force is removed when driving piece rotates along first direction under the external force, the upper end of main shaft has an adjustment part, and the adjustment part is exposed through the upper end open mouth of the hollow portion of sleeve to cooperate with external device to realize the rotation adjustment of main shaft. When actually using, the rotation control of main shaft can be realized through the torsion torque of adjustment part to control the displacement of axial torsion adjustment spare finally realizes the compression amount adjustment of compression spring to satisfy the adjustment of torsion output, satisfies the use demand of user. Meanwhile, the spring torsion system and operating device proposed by the utility model can also realize the adjustment of torsion output to satisfy the torsion demand of different application scene, and this accords with the requirement of ergonomics. In addition, the spring torsion system and operating device can realize the separate adjustment of torsion in different angle interval to satisfy different demand, and this accords with the requirement of ergonomics. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the appearance structure schematic diagram of the spring torsion device of the utility model;

[0031] Figure 2 It is the internal structure schematic diagram of the spring torsion device of the utility model;

[0032] Figure 3 It is the structure schematic diagram of sleeve;

[0033] Figure 4 It is the structure schematic diagram of main shaft;

[0034] Figure 5 It is the structure schematic diagram when driven part and driving part helical surface contact;

[0035] Figure 6 It is the schematic diagram after driven part and driving part axial separation;

[0036] Figure 7 It is the structure schematic diagram of driving part;

[0037] Figure 8 It is the cooperation schematic diagram of main shaft and end cap structure;

[0038] Figure 9 The structure schematic diagram of axial torsion adjustment spare

[0039] Figure 10 is a structural schematic view of a first spring torsion system;

[0040] Figure 11 is a structural schematic view of a second spring torsion system;

[0041] Figure 12 is a structural schematic view of a kind of operating device. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings Figure 1 to the accompanying drawings Figure 12 The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings

[0043] It should be noted that if the direction involved in the embodiments of the present application is shown in the drawings, for example, the upper and lower of embodiment one is the upper and lower of the spring torsion device, the specific Figure 1 and Figure 2 of the drawings are the upper and lower of the spring torsion device, Figure 1 and Figure 2 the upper of the spring torsion device, Figure 1 and Figure 2 the lower of the spring torsion device. If a certain specific posture changes, the directionality indication also changes accordingly. It should be noted that the forward and reverse, first direction, second direction and the like described in the present application are only used to express a certain specific relative direction, and do not represent a certain explicit direction. In addition, it should be noted that the screw pair formed by the driving member and the driven member of the present application can be a right-handed screw or a left-handed screw.

[0044] The spring torsion device is a common structural part in the mechanical field, which can output torsion to meet the use requirements of different scenes. Generally speaking, different spring torsion devices with different torsion outputs are used in different use scenes. If different torsion outputs are required in a given scene, the current technical solution cannot be realized, and only the factory setting can be fixed, and the user can only use different products to meet the requirements. Therefore, the present application proposes a new technical solution, which controls the compression amount of the compression spring by controlling the movement of the main shaft and the axial torque adjusting member, thereby realizing the torsion output value. EMBODIMENT

[0045] As shown in Figure 1 and Figure 2 , Figure 1The utility model discloses a spring torsion device's appearance schematic diagram is shown, Figure 2 The utility model discloses a spring torsion device's internal structure schematic diagram is shown. Figure 1 And Figure 2 The utility model discloses a spring torsion device, including sleeve 10, main shaft 20, axial torsion adjusting part 30, compression spring 40, driven part 50 and driving part 60. The hollow portion 101 of sleeve 10 is arranged with axial torsion adjusting part 30, compression spring 40, driven part 50 and driving part 60 from top to bottom, and the axial torsion adjusting part 30, compression spring 40, driven part 50 and driving part 60 are sleeved on the outer

[0046] As shown in the figure, Figure 3 The sleeve 10 is a hollow structure and has a hollow portion 101, and the upper and lower ends of the hollow portion 101 are designed as open ends, i.e., including an upper open end 102 and a lower open end 103. Preferably, the sleeve 10 adopts a cylindrical sleeve structure. In addition, the spring torsion device of the utility model needs to be assembled in a specific position, such as being fixed on an assembly plate. In order to facilitate assembly, in some embodiments, the sleeve 10 is designed as a stepped structure. Specifically, as shown in the figure, Figure 1 And Figure 3 An outwardly convex portion 104 is arranged at the middle position of the sleeve 10, and the two ends are small end portions. During assembly, the entire spring torsion device is fixed and assembled by being clamped on the outwardly convex portion 104 through a clamp structure. In order to ensure the strength of the entire spring torsion device, the sleeve 10 of the utility model is preferably made of a metal material, such as stainless steel, iron, copper, aluminum alloy, etc. In order to ensure the biting force of mutual cooperation during clamping of the clamp and ensure the stability of installation, the outer surface of the outwardly convex portion 104 is designed as an anti-slip tooth structure. Specifically, a rack structure along the axial direction is arranged on the outer surface of the outwardly convex portion 104. In this way, during fixing, the clamp can be more closely matched with the rack structure.

[0047] As shown in the figure, Figure 2 The main shaft 20 is assembled and connected with the first limiting assembly 70 at the upper end of the sleeve 10 to constrain the downward displacement of the main shaft 20; the lower end of the main shaft 20 is detachably connected with the second limiting assembly 80, and the second limiting assembly 80 is located below the driving part 60 so that the driving part 60 is at least partially located in the sleeve 10.

[0048] As shown in the figure, Figure 4As shown, in one specific embodiment, the main shaft 20 is in the form of a stepped structure. It includes an upper portion 201, a middle portion 202 and a lower portion 203. The outer diameter of the upper portion 201 is greater than that of the middle portion 202, and the outer diameter of the middle portion 202 is greater than that of the lower portion 203. Of course, the main shaft 20 can have any suitable shape. Figure 2 As shown, the first limiting assembly 70 includes an end cap structure 701 having a stepped through hole with a larger upper end and a smaller lower end. The upper portion 201 of the main shaft 20 is arranged at the upper end of the stepped through hole, and the middle portion 202 of the main shaft 20 extends downward after passing through the lower end of the stepped through hole. The end cap structure 701 has a stepped structure. The size of the upper portion is greater than that of the upper end opening 102 of the hollow portion 101 of the sleeve 10, and the size of the lower portion of the end cap structure 701 matches that of the hollow portion 101, so that the end cap structure 701 is just clamped into the hollow portion 101 and restricts the axial downward movement of the main shaft 20. To ensure that the main shaft 20 and the end cap structure 701 can be fixed together and prevent the main shaft 20 from falling upward, the first limiting assembly 70 further includes a second compression spring 702 and a first stop piece 703. The first stop piece 703 is detachably assembled with the main shaft 20, and the second compression spring 702 is sleeved on the outer periphery of the main shaft 20 and located between the first stop piece 703 and a first thrust bearing 704. The first thrust bearing 704 is sleeved on the main shaft 20 and abuts against the end cap structure 701 at the upper end and abuts against the second compression spring 702 at the lower end. With this scheme, the second compression spring 702 can generate an axial downward force on the first stop piece 703, and then generate a downward force on the main shaft 20, thereby ensuring stable assembly of the main shaft 20 and the end cap structure 701 without easy falling.

[0049] As shown, Figure 8As shown, the figure shows the assembly diagram of the end cover structure 701 and the main shaft 20. In detail, the end cover structure 701 has a clamping hole 7011 in the radial direction, the clamping hole 7011 is limited by a limiting spring 705 and a steel ball 706, and the outer side of the hole matched with the end cover structure 701 of the main shaft 2 has a limiting groove 206. When assembled, the limiting spring 705 and the steel ball 706 are both arranged in the clamping hole 7011, and under the elastic force of the limiting spring 705, the steel ball 706 is partially clamped in the limiting groove 206. In this way, the steel ball 706 falls partially in the limiting groove 206 and partially in the clamping hole 7011, so that the steel ball 706 realizes the locking of the main shaft 20. That is, when not subjected to external force or the external force does not exceed the predetermined force, the main shaft 20 will not rotate. When the main shaft 20 rotates under force, the steel ball 706 is squeezed into the clamping hole 7011 under the action of the main shaft 20, so that the main shaft 20 can continue to rotate to press the compression spring 40 or release the compression spring 40. When the external force is removed, the steel ball 706 is reset to the limiting groove 206 under the action of the limiting spring 705, and the rotation locking of the main shaft 20 is realized. Of course, it should be clear that the torsional force generated by the compression spring 40 is not enough to drive the main shaft 20 to break through the restraint of the limiting spring 705. It should be understood that in the present scheme, the circumferential side of the end cover structure 701 has a plurality of limiting grooves 206 along the circumference, and the steel ball 706 can fall into different limiting grooves 206 at different rotation angles to realize locking. Of course, in addition, the steel ball 706 can also be a friction piece, which is in friction contact with the outer circumferential side of the end cover structure 701 after assembly to generate rotation constraint of the main shaft 20. Of course, in other embodiments, the limiting spring 705 and the steel ball 706 can not be provided, but the outer circumferential side of the end cover structure 701 of the main shaft 20 is in friction contact to resist the torsional force generated by the compression spring 40, preventing rotation when no external force or the external force is not large enough.

[0050] As Figure 2 and Figure 4 As shown, the axial torsional force adjusting piece 30 is threadedly connected with the main shaft 20 and is matched with the sleeve 10 to realize axial reciprocating motion during rotation of the main shaft 20. Specifically, the outer circumference of the upper half of the middle part 202 of the main shaft 20 is provided with a threaded structure 204. Correspondingly, as Figure 9As shown, the axial torsion adjusting piece 30 is provided with a sleeve hole 302, and the inner thread is arranged in the sleeve hole 302. When assembled, the sleeve hole 302 of the axial torsion adjusting piece 30 is sleeved at the threaded structure 204 to achieve threaded connection. Wherein, the sleeve 10 is provided with a first guide slot hole 105 arranged along the axial direction, and the outer periphery of the axial torsion adjusting piece 30 is detachably connected with a first guide piece 301, the first guide piece 301 is located at the first guide slot hole 105, and the abutting constraint is generated in the circumferential direction, so that the first guide piece 301 can only move up and down along the first guide slot hole 105. That is, the main shaft 20, the axial torsion adjusting piece 30, the first guide piece 301 and the first guide slot hole 105 of the sleeve 10 constitute a threaded screw sliding block structure. When the main shaft 20 rotates, due to the limiting effect of the first guide slot hole 105 of the sleeve 10 on the first guide piece 301, the axial torsion adjusting piece 30 generates up and down reciprocating movement along the axial direction. When the axial torsion adjusting piece 30 moves downward, the compression spring 40 is further compressed, so that the elastic force generated by the compression spring 40 becomes larger; when the axial torsion adjusting piece 30 moves upward, the compression spring 40 is released, so that the elastic force of the compression spring 40 becomes smaller. In addition, in order to prevent dust, impurities and the like from accumulating at the first guide slot hole 105, the utility model is provided with a second shell 107 sleeved outside the region of the first guide slot hole 105.

[0051] As shown in the figure, Figure 2 The two ends of the compression spring 40 abut against the axial adjusting piece 30 and the driven piece 50 respectively to apply elastic force to the axial torsion adjusting piece 30 and the driven piece 50. Specifically, in the technical solution, the compression spring 40 is always in a compressed state, or when the axial torsion adjusting piece 30 moves to the uppermost position and the driven piece 50 is located at the lowermost position, the compression spring 40 is just in a free state. That is, except that the compression spring 40 is in a free state when the axial torsion adjusting piece 30 moves to the uppermost position and the driven piece 50 is located at the lowermost position, the compression spring 40 is in a compressed state at any other position. The elastic force generated by the compression spring 40 generates an upward force on the axial torsion adjusting piece 30 and a downward force on the driven piece 50.

[0052] In the embodiment, the driven piece 50 is constrained and matched with the sleeve 10 to reciprocate along the axial direction when driven. That is, the driven piece 50 can only reciprocate in the axial direction. In detail, as shown in the figure, Figure 2As shown, a second guide member 501 is detachably connected to the outer side of the follower 50. A second guide slot 106 is provided in the lower portion of the sleeve 10 along the axial direction. The second guide member 501 is positioned within the second guide slot 106 and circumferentially abuts the sidewalls forming the second guide slot 106. This allows the follower 50 to move only in the axial direction when subjected to force. Furthermore, to prevent the accumulation of dust, impurities, and the like in the second guide slot 106, the present invention incorporates a third housing 108 that is sheathed around the area where the second guide slot 106 is located.

[0053] It should be clear that in the present invention, the active member 60 and the driven member 50 cooperate with each other through a spiral motion pair to realize that when the active member 60 is rotated in a first direction by an external force, the driven member 50 is driven to move upward to compress the compression spring 40 and reset in a second direction opposite to the first direction under the action of the compression spring 40 after the external force is removed. Specifically, when the active member 60 is forced to rotate in the first direction (for example, Figure 2 When the active member 60 rotates (in the left direction as shown), the active member 60 drives the follower 50 axially away from the active member 60, that is, the follower 50 is driven to move upward, and the movement process further compresses the compression spring 40. When the external force acting on the active member 60 is removed, the compression spring 40 will reset in the direction of the restoring elastic force, and the compression amount will decrease, that is, the compression spring 40 rebounds, driving the follower 50 to move downward. When the follower 50 moves downward, the active member 60 is driven to rotate along the second direction to restore to its initial state. When the follower 50 moves downward, the action of the spiral motion pair of the active member 60 and the follower 50 drives the active member 60 to rotate along the second direction until the compression spring 40 is completely reset to its initial position. In this way, a torsional stroke is achieved.

[0054] In addition, such as Figure 2 As shown, the second limiting assembly 80 is, for example, a second retaining spring that is detachably engaged with the lower portion 203 of the main shaft 20, and the upper end surface of the second retaining spring abuts against the active member 60, thereby constraining the active member 60 axially and preventing the active member 60 from being separated from the main shaft 20 under the elastic force generated by the compression spring 40. In a specific embodiment, a second thrust bearing 90 is provided between the active member 60 and the second retaining spring, with the upper end of the second thrust bearing 90 abutting against the active member 60 and the lower end of the second thrust bearing 90 abutting against the second retaining spring.

[0055] It is very important that as one of the utility model points of this utility model, Figure 1 and Figure 2 As shown, the upper end of the main shaft 20 has an adjustment portion 205 , which is exposed through the upper end opening of the hollow portion 101 of the sleeve 10 to cooperate with an external device to achieve rotational adjustment of the main shaft 20 .

[0056] It should be understood that the adjustment part 205 is used for cooperation with external tools. That is, the rotation angle of the main shaft 20 is adjusted by cooperation of the tool with the adjustment part 205. For example, when the main shaft 20 is rotated in the direction shown by the arrow to the right, the axial torsion adjusting part 30 will move downward, and at this time, the compression spring 40 will be further compressed, and then the elastic force generated by the compression spring 40 will be increased. When the driving part 60 needs to be rotated in the first direction (i.e., to the left), the required torsion will be greater. Similarly, when the main shaft 20 is rotated in the direction shown by the arrow to the left, the axial torsion adjusting part 30 will move upward, and at this time, the compression amount of the compression spring 40 will be reduced, and then the elastic force generated by the compression spring 40 will be reduced. When the driving part 60 needs to be rotated in the first direction (i.e., to the left), the required torsion will be reduced. Figure 2 Figure 2 Figure 2 Figure 2 By the present application, the torsion of the spring torsion device is adjusted. That is, the main shaft 20 can be adjusted in the forward direction or the reverse direction according to the use requirements of different people. For example, when the spring torsion device is used for a remote control handle, for adults, the main shaft 20 can be adjusted in the reverse direction to increase the torsion to meet the force habit of the adults. Similarly, if the user is a child, then the main shaft 20 can be adjusted in the forward direction to reduce the torsion to meet the force habit of the child. That is, the force habit of ergonomics is met. In general, people who need greater torsion can adjust the main shaft 20 in the reverse direction, and people who need smaller torsion can adjust the main shaft 20 in the forward direction. The problem that the traditional torsion device can only have a specific initial torsion is solved, and the use requirements of the user are greatly met. Moreover, after the spring torsion device of the present application is assembled, the adjustment can be made at any time according to the use requirements, which is very convenient.

[0057] Specifically, as shown in Figure 1 and Figure 2 The adjustment part 205 is a groove hole formed on the top end surface of the main shaft 20 and recessed inward. The groove hole is, for example, a cross shape, which is used in cooperation with a cross screwdriver; the groove hole can also be a hexagonal groove hole, which is used in cooperation with a hexagonal key. Of course, it should be clear that the groove hole can be any suitable shape to adapt to the use of different tools. At this time, it is very important that the adjustment part 205 is exposed, so that the tool can be inserted for cooperation and adjustment.

[0058] In some other embodiments, the adjustment part 205 is recessed in the hollow part 101 of the sleeve 10; it can also extend to the outside of the sleeve 10 in the axial direction. For example, the adjustment part 205 is a protruding structure extending to the outside of the sleeve 10. By adopting such a scheme, the protruding structure can be clamped by the tool to realize the forward and reverse adjustment. ​​​

[0059] In another important embodiment, the follower 50 and the active member 60 have an axially constrained rotation plane perpendicular to the axial direction at the bottom end of the spiral motion pair. The axially constrained rotation plane is used to constrain the axial movement of the follower 50 and the active member 60 and provide space for lateral non-transmission rotational movement after the spiral motion pair of the follower 50 and the active member 60 is disengaged. The bottom end mentioned here refers to the bottom in the direction away from the active member 60 for the follower 50; similarly, for the active member 60, the bottom end refers to the bottom in the direction away from the follower 50. That is, when the follower 50 and the active member 60 move to the state closest to each other, if they rotate further, the spiral motion pair will be disengaged. After that, if the active member 60 moves along the second direction ( Figure 2 When the active member 60 continues to rotate (in the right direction shown), the active member 60 no longer generates an axial force on the driven member 50, and even if the active member 60 rotates further, it will not drive the driven member 50 to move axially. The use of such a solution makes it easy to control the distance moved by the driven member 50 and adapt to the needs of grading and applying force between the partitions, and the grading and applying force between the partitions will be described in detail below. Therefore, the space for lateral non-transmission rotational movement after the spiral motion pair of the driven member 50 and the active member 60 described in the utility model is disengaged refers to when the active member 60 moves closest to each other along the second direction. If the active member 60 further rotates along the second direction, the active member 60 no longer generates an axial force on the driven member 50 through the spiral motion pair, and further rotation thereafter will not drive the driven member 50 to move axially. However, the active member 60 can further rotate along the second direction, and the active member 60 will not drive the driven member 50 to rotate during the rotation process because the driven member 50 can only move axially. In the present invention, the process in which the active member 60 enters the axially constrained rotation plane along the second direction and further rotates but does not generate axial movement of the driven member 50 is defined as an unloaded zone.

[0060] In detail, the opposite ends of the driven member 50 and the active member 60 each have a force-applying portion formed axially outward, and each force-applying portion has a helical surface formed axially inclined. When the force-applying portion of the driven member 50 and the force-applying portion of the active member 60 cooperate, the corresponding helical surfaces contact each other to form the helical motion pair; the axially constrained rotation planes of the driven member 50 and the active member 60 are located outside the bottom of the helical surface of each force-applying portion. Figure 5 and Figure 6 As shown, the outer side here refers to the right side of the helical surface of the driven member 50. For the active member 60, the outer side is the left side of the helical surface of the active member 60.

[0061] like Figure 5 and Figure 6As shown, in a specific embodiment, the follower 50 forms a first force-applying portion 502, and the first force-applying portion 502 spirally forms a first helical surface 503 from the upper right to the lower left, and forms a first axially constrained rotation plane 504 on the top right side of the first force-applying portion 502, and the first axially constrained rotation plane 504 is perpendicular to the axial direction. The lower end face of the first force-applying portion 502 is parallel to the first axially constrained rotation plane 504. Correspondingly, the active member 60 forms a second force-applying portion 601, and the second force-applying portion 601 spirally forms a second helical surface 602 from the lower left to the upper right, and forms a second axially constrained rotation plane 603 on the bottom left side of the second force-applying portion 601, and the second axially constrained rotation plane 603 is perpendicular to the axial direction. The upper end face of the second force-applying portion 601 is a plane and is parallel to the second axially constrained rotation plane 603. That is, in this embodiment, the active member 60 and the driven member 50 both have two corresponding force-applying parts, and the first force-applying part 502 and the second force-applying part 601 and the corresponding helical surface and axially constrained rotation plane form a centrally symmetrical structural design. Of course, it is not limited to this, and the active member 60 and / or the driven member 50 may also each have three or more force-applying parts. Simply increasing or decreasing the force-applying parts and the corresponding helical surfaces should fall within the scope of protection of the present utility model. In addition, it should be noted that the driven member 50 and the active member 60 of this embodiment in this scheme are designed with the same size and shape on their respective force-applying parts and their respective axially constrained rotation planes, which is more conducive to the follower 50 and the active member 60 to fit better when working together. That is to say, the force-applying parts, the helical surface and the axially constrained rotation plane are of the same structural design, but they are oriented in the same direction during assembly, such as Figure 6 Of course, this is only a specific embodiment and does not limit the protection scope of the present invention.

[0062] Among them, in this embodiment, the first helical surface 503 is in surface contact with the second helical surface 602. When the follower 50 and the active member 60 are axially close to each other to the closest, the second force-applying portion 601 enters into contact with the first axially constrained rotation plane 504. At this time, on the right side of the second force-applying portion 502, that is, in the second direction, the follower 50 leaves a preset space to meet the further rotation of the active member 60 into the first no-load area 505. That is, in this embodiment, the circumferential size of the upper end face of the second force-applying portion 601 is smaller than the circumferential size of the first axially constrained rotation plane 504, so as to meet the no-load rotation requirement. That is to say, when the upper end face of the second force-applying portion 601 is just in contact with the first axially constrained rotation plane 504, the follower 50 has sufficient space for movement on the right side (second direction) of the second force-applying portion 601. Similarly, in the first direction ( Figure 6As shown on the left side of the figure), when the lower end surface of the first force-applying portion 502 contacts the second axially constrained rotation plane 603, the active member 60 leaves enough space on the left side (first direction) of the first force-applying portion 502 for further rotation of the active member 60 in the second direction, thereby forming a second no-load area 604.

[0063] In a specific embodiment, when the lower end surface of the first force applying portion 502 contacts the second axially constrained rotation plane 603, the upper end surface of the second force applying portion 601 also contacts the first axially constrained rotation plane 504. This makes the rotation of the driven member 50 and the driving member 60 more stable.

[0064] Further, such as Figure 6 As shown, both the driven member 50 and the active member 60 have two force-applying portions evenly distributed along the circumference. These two force-applying portions of the driven member 50 and the active member 60 cooperate to form two pairs of spiral motion pairs. Specifically, the driven member 50 has two first force-applying portions 502 along the circumference, and the active member 60 has two second force-applying portions 601 along the circumference. Corresponding helical surfaces are evenly distributed along the circumference and in the same direction. Using two sets of corresponding force-applying portions to achieve spiral transmission further enhances the stability of the motion of the driven member 50 and the active member 60.

[0065] The technical solution of this embodiment is advantageous for realizing a two-stage torque design when two spring torque assemblies are used in conjunction with each other. The two-stage torque design will be described in detail below.

[0066] At least a portion of the active member 60 is exposed outside the sleeve 10. This solution is conducive to matching the active member 60 with the structure of a specific application scenario. Specifically, in a specific embodiment, Figure 1 and Figure 2 As shown, the active member 60 has a connecting portion 605, which extends to the bottom of the sleeve 10. Since it is exposed during use, it is very convenient to assemble. Figure 7 As shown, the connecting portion 605 has an axially arranged assembly hole 6051 and radially arranged fixing holes 6052, which are connected to the assembly hole 6051. During assembly, the structure of the application scenario (such as the connecting shaft) is inserted into the assembly hole 6051, and then a screw is passed through the fixing hole 6052 to lock the connecting shaft. Example

[0067] In another embodiment, Figure 10As shown, the utility model also proposes a spring torsion system, the spring torsion system is configured to have application connecting piece 100 and two spring torsion devices 200.Application connecting piece 100 includes the coaxial arrangement of first connecting part 1001 and second connecting part 1002 at both sides.

[0068] Wherein each spring torsion device 200 is any one spring torsion device without idle area described above, first connecting part 1001 and second connecting part 1002 are respectively connected with the driving piece 60 of one spring torsion device 200 coaxially.For example, first connecting part 1001 is assembled with the assembly hole 6051 of the driving piece 60 of left spring torsion device 200, and second connecting part 1002 is assembled with the assembly hole 6051 of the driving piece 60 of right spring torsion device 200.

[0069] In this scheme, the torsion generated by the spring torsion device 200 on the left and right sides can be in the same direction.For example, as shown in the figure, when the application connecting piece 100 rotates upward in the paper direction, the driving piece 60 rotates simultaneously, and drives the respective driven piece 50 to extrude the corresponding compression spring 40 along the axial direction, thereby increasing the torsion. Figure 11

[0070] It should be appreciated that in this embodiment, there can be several cases.For example, when the application connecting piece 100 is rotated at the beginning, the two spring torsion devices 200 enter the state of extruding the compression spring 40. Embodiment

[0071] Preferably, as a more preferred way, the utility model focuses on the case of using spring torsion device 200 with idle area.In this case, as shown in the figure, when the application connecting piece 100 rotates upward in the paper direction, the driving piece 60 rotates simultaneously, and drives the respective driven piece 50 to extrude the corresponding compression spring 40 along the axial direction, thereby increasing the torsion. Figure 11 ​As shown, this figure only shows the structure of the driven member 50 and the active member 60 of the spring torsion device 200, and the rest of the structure is not shown. However, combined with the description of the present invention, this solution is clear. Specifically, the present invention also proposes a spring torsion system, which is configured to have an application connector 100 and two spring torsion devices 200. The application connector 100 includes a first connecting portion 1001 and a second connecting portion 1002 coaxially arranged on both sides. The two spring torsion devices 200, each of the spring torsion devices 200 is a spring torsion device with an unloaded area as described above. The first connection part 1001 and the second connection part 1002 are coaxially connected to the active part 60 of a spring torsion device 200 respectively; the two spring torsion devices 200 are centrally symmetrically distributed so that the axially constrained rotation planes of the two spring torsion devices 200 are distributed on both sides of the rotation direction and when the application connection part 100 is driven to rotate, one spring torsion device 200 is in the motion contact process of the spiral motion pair and the other spring torsion device 200 is in the lateral non-transmission rotation process of the axially constrained rotation plane. That is, in this embodiment, the torsion of the two spring torsion devices is set in opposite directions. First, define the state in which the active part 60 drives the driven part 50 to move axially when it rotates under external force as the working state. The no-load area after the spiral motion pair of the active part 60 and the driven part 50 disengages and enters the axially constrained rotation plane is the non-working state. In other words, if Figure 11 As shown, in this embodiment, when the application connector 100 is rotated in a certain direction from the initial position, the first spring torque device 200 (such as Figure 11 The upper spring torque device shown in FIG) enters the working state, and the second spring torque device 200 (as shown Figure 11 The spring torsion device 200 shown below enters the non-working state in the no-load zone. Starting from the initial position, when the application connector 100 is rotated in the other direction, the first spring torsion device 200 enters the non-working state, while the second spring torsion device 200 is in the working state. Figure 11 Left direction as shown) and reverse direction ( Figure 11 The right direction shown in the figure) can be achieved by applying force through a separate spring torque device 200. And it is important that, since the spring torque device 200 of the present invention can adjust the corresponding torque, the present embodiment can be designed with different torques according to different needs, thereby achieving the above-mentioned interval torque adjustment and graded torque design. It should be noted that the intervals are as follows. Figure 12 As shown, when rotating to the left, a corresponding torque is generated, which is one interval, and when rotating to the right, another corresponding interval is generated, so that two torque intervals are included, which constitute the torque adjustment within the interval. It should be noted that in this embodiment, when the initial position is​ As shown, one of the two spring torque devices corresponds to the helical surface just in contact, while the end surface of the force applying part of the other spring torque device is also just located at the corresponding axial constraint rotation plane. In this way, whether the application connecting piece 100 is rotated to the left or to the right, a torque can be generated to produce a torque effect on the application connecting piece 100. The specific torque tension effect can be adjusted by different main shafts 20 according to actual needs. In summary, through the technical solution of the embodiment, the torque system can generate torque in both forward and reverse directions and can automatically adjust the torque size at different rotation angles according to actual conditions, meet the individual adjustment needs of torque size in different angle intervals, meet the user's use, and make it more consistent with the force requirement and force habit of human engineering.

[0072] In another embodiment, the torque directions of the two spring torque devices are in the same direction. It can be that at the beginning, the first spring torque device 200 is in the unloaded area, and the second spring torque device 200 is in the state of starting to compress the compression spring 40; until the application connecting piece 100 is flipped to a set angle, the first spring torque device 200 enters the working area of compressing the compression spring 40, at this time, a sudden increase in force needs to be applied to the application connecting piece 100, at this time, the torque required to act on the application connecting piece 100 suddenly increases when the first spring torque device 200 intervenes during the entire rotation process of the application connecting piece 100, and the critical point at this time forms the connection torque design described above. That is, in the first rotation angle interval, only the elastic force of the second spring torque device 200 needs to be overcome. In the second rotation angle interval, the elastic forces of the first and second spring torque devices 200 need to be overcome. Of course, it can also be designed that when rotating to the right, the working area of compressing the compression spring 40 is entered, and the specific implementation process is the same as that of rotating to the left, which will not be described here. Embodiment

[0073] Reference ​The application discloses a kind of operating devices, configured to have any one of the spring torsion system described above;Wherein, the application connector includes between the first connecting part 1001 and the second connecting part 1002 to be stressed application part 1003 to realize.The spring torsion system can be the spring torsion system described in embodiment 2 or embodiment 3, and the application part 1003 can be applied to different scenarios according to different force requirements.The application part 1003 can be connected to fixed external specific any required device.For example, the application part 1003 can be connected to fixed gear or pulley, realize the torsion size and torsion adjustment of different angle.For example, the operating device can be a device with handle, corresponding handle is connected with the application part 1003, when the handle is moved, different torsion can be obtained to meet different torsion adjustment.For example, the application part 1003 of operating device can be a gamepad, and the size of torsion is different in different control state.Therefore, the technical scheme of the embodiment can meet the design of different torsion in positive direction and reverse direction.The adjustment demand of different people to different torque can be met, the force requirement of ergonomics is met, and the market demand is met.

[0074] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application.

Claims

1. A spring torsion device, characterized in that: The invention comprises a sleeve (10), wherein the sleeve (10) has a hollow portion (101); a main shaft (20) arranged in an axial direction is provided in the hollow portion (101); an axial torsion adjustment member (30), a compression spring (40), a driven member (50) and a driving member (60) are arranged from top to bottom in the hollow portion (101) of the sleeve (10); the axial torsion adjustment member (30), the compression spring (40), the driven member (50) and the driving member (60) are sleeved on the outer periphery of the main shaft (20) from top to bottom; The two ends of the compression spring (40) respectively abut against the axial torque adjustment member (30) and the driven member (50) to apply elastic force to the axial torque adjustment member (30) and the driven member (50); the axial torque adjustment member (30) is threadedly connected to the main shaft (20) and is constrained by the sleeve (10) to achieve axial reciprocating motion adjustment of the axial torque adjustment member (30) during the rotation process of the main shaft (20); The driven member (50) is constrained to cooperate with the sleeve (10) so as to reciprocate along the axial direction when driven; the active member (60) and the driven member (50) are driven by a spiral motion pair so as to drive the driven member (50) to move upward when the active member (60) is rotated in a first direction by an external force to compress the compression spring (40) and reset in a second direction opposite to the first direction under the action of the compression spring (40) after the external force is removed; The upper end of the main shaft (20) has an adjustment portion (205), and the adjustment portion (205) is exposed through the upper end opening of the hollow portion (101) of the sleeve (10) to cooperate with an external device to achieve rotational adjustment of the main shaft (20).

2. A spring torsion device according to claim 1, characterized in that: The adjustment portion (205) is a slotted hole provided on the top end surface of the main shaft (20) and recessed inwardly.

3. A spring torsion device according to claim 1, characterized in that: The driven member (50) and the active member (60) have an axially constrained rotation plane perpendicular to the axial direction at the bottom end of the spiral motion pair, and the axially constrained rotation plane is used to constrain the axial movement of the driven member (50) and the active member (60) and provide space for the driven member (50) and the active member (60) to perform lateral non-transmission rotational movement after the spiral motion pair is disengaged.

4. A spring torsion device according to claim 3, characterized in that: The opposite ends of the driven member (50) and the active member (60) both have a force-applying portion formed axially outward, and each of the force-applying portions has a helical surface formed by axial inclination. When the force-applying portion of the driven member (50) and the force-applying portion of the active member (60) cooperate, the corresponding helical surfaces contact each other to form the helical motion pair; the axially constrained rotation planes of the driven member (50) and the active member (60) are located outside the bottom of the helical surface of each force-applying portion.

5. A spring torsion device according to claim 4, characterized in that: The driven member (50) and the active member (60) both have two force-applying portions uniformly distributed along the circumferential direction, and the two force-applying portions of the driven member (50) and the active member (60) respectively cooperate to form two pairs of the spiral motion pairs.

6. A spring torsion device according to claim 1, characterized in that: At least a portion of the active component (60) is exposed outside the sleeve (10).

7. A spring torsion device according to claim 1, characterized in that: The main shaft (20) and the first limiting assembly (70) are assembled and connected to the upper end of the sleeve (10) to constrain the main shaft (20) from moving downward; the lower end of the main shaft (20) is detachably connected to the second limiting assembly (80), and the second limiting assembly (80) is located below the active member (60) so that the active member (60) is at least partially located in the sleeve (10).

8. A spring torsion system, characterized in that: Configured to have: An application connector (100) comprises a first connecting portion (1001) and a second connecting portion (1002) coaxially arranged on both sides; Two spring torsion devices (200), each of the spring torsion devices (200) being a spring torsion device as claimed in claim 1 or 2; The first connecting portion (1001) and the second connecting portion (1002) are respectively coaxially connected to an active component (60) of a spring torsion device (200).

9. A spring torsion system, characterized in that: Configured to have: An application connector (100) comprises a first connecting portion (1001) and a second connecting portion (1002) coaxially arranged on both sides; Two spring torsion devices (200), each of the spring torsion devices (200) being a spring torsion device according to any one of claims 3 to 7; The first connecting portion (1001) and the second connecting portion (1002) are respectively coaxially connected to an active member (60) of a spring torsion device (200); The two spring torsion devices (200) are centrally symmetrically distributed so that the axially constrained rotation planes of the two spring torsion devices (200) are distributed on both sides of the rotation direction, and when the application connector (100) is driven to rotate, one spring torsion device (200) is in a motion contact process of the helical motion pair, and the other spring torsion device (200) is in a transverse non-transmission rotation process of the axially constrained rotation plane.

10. A manipulation device, characterized in that: configured to have a spring torsion system as claimed in claim 8 or 9; The application connector (100) comprises an application portion (1003) located between the first connection portion (1001) and the second connection portion (1002) for achieving force application.

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