Spring torsion device, spring torsion system and operating device

Abstract

The invention 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, 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 invention relates to the technical field of torsion structures, in particular to a spring torsion device, a spring torsion system and a control device. Background Art

[0002] Generally speaking, many products need to provide torque to meet the requirements of use. For example, handles and fitness equipment usually need to be turned in the forward and reverse directions to meet the needs of operation.

[0003] The torque of traditional handles is achieved by applying force through torsion springs, for example. With the development of technology, various technologies have emerged for torque supply devices. For example, the technology of patent publication number CN103306562A provides such a technical solution: including a housing, an end cover, and a main shaft, wherein the housing is sealed and connected to the end cover, and an elastic member is arranged in the housing; the main shaft is installed in the shaft hole of the end cover and supported by a bearing, and a key tooth or a profile is arranged on the main shaft. The main shaft and the end cover are connected by a connecting piece with a spiral surface and a rolling sleeve to form a spiral rolling pair, and a damping member is arranged at the connecting piece. The main shaft and the end cover are connected and cooperated by a connecting piece with a spiral surface and a rolling sleeve to realize the conversion of rotary power and linear power while being able to rotate around the main shaft, so that the kinetic energy transmission loss is minimized and the torque efficiency is maximized. It only needs to change the shape, size and number of the spiral surface to adapt to the requirements of different environmental occasions, especially solving the technical problem of variable pitch in this industry for many years.

[0004] However, such means cannot adjust the torque according to different torque size usage requirements, especially for human use scenarios. Since the torque is not adjustable, it cannot meet the ergonomic design requirements of different people, that is, it cannot meet the needs of different people for torque adjustment, and therefore cannot meet actual usage needs. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a spring torque device, a spring torque system and a control device, the purpose of which is to solve the problem that the existing torque device cannot adjust the torque according to actual use needs.

[0006] In order to solve the above technical problems, the basic technical solution proposed by the present invention is:

[0007] A spring torque device comprises a sleeve, wherein the sleeve has a hollow portion; a main shaft arranged along the axial direction is arranged in the hollow portion; an axial torque adjustment member, a compression spring, a driven member and an active member are arranged from top to bottom in the hollow portion of the sleeve, and the axial torque adjustment member, the compression spring, the driven member and the active member are sleeved on the outer periphery of the main shaft from top to bottom;

[0008] The two ends of the compression spring respectively abut against the axial adjustment member and the driven member to apply elastic force to the axial torque adjustment member and the driven member; the axial torque adjustment member is threadedly connected to the main shaft and is constrained by the sleeve to achieve axial reciprocating motion adjustment of the axial torque adjustment member during the rotation of the main shaft;

[0009] The driven member is constrained and cooperated with the sleeve to reciprocate along the axial direction when driven; the active member and the driven member are driven and cooperated through a spiral motion pair to realize that when the active member is rotated along a first direction by an external force, the driven member is driven to move upward to compress the compression spring and reset in a second direction opposite to the first direction under the action of the compression spring after the external force is removed;

[0010] The upper end of the main shaft is provided with an adjustment portion, which is exposed through the upper end opening of the hollow portion of the sleeve to cooperate with an external device to achieve rotational adjustment of the main shaft.

[0011] Furthermore, the adjustment portion is a slot hole provided on the top end surface of the main shaft and recessed inwardly.

[0012] Furthermore, the driven member and the active member 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 and the active member and provide space for lateral non-transmission rotational movement after the spiral motion pair of the driven member and the active member is disengaged.

[0013] Furthermore, the opposite ends of the driven member and the active member have a force-applying portion formed axially outward, and each of the force-applying portions has a helical surface formed by being inclined along the axial direction. When the force-applying portion of the driven member and the force-applying portion of the active member cooperate, the corresponding helical surfaces are in surface contact to form the helical motion pair; the axially constrained rotation planes of the driven member and the active member are located on the outside of the bottom of the helical surface of each force-applying portion.

[0014] Furthermore, the driven member and the active member both have two force-applying parts uniformly distributed along the circumferential direction, and the two force-applying parts of the driven member and the active member respectively cooperate to form two pairs of the spiral motion pairs.

[0015] Furthermore, at least a portion of the active component is exposed outside the sleeve.

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

[0017] A spring torsion system is also provided, which is configured to have:

[0018] The application connector includes a first connecting portion and a second connecting portion coaxially arranged on both sides;

[0019] Two spring torsion devices, each of which is a spring torsion device as claimed in claim 1 or 2;

[0020] The first connecting portion and the second connecting portion are coaxially connected to an active member of a spring torsion device respectively.

[0021] The present invention further proposes a spring torsion system, which is configured to have:

[0022] The application connector includes a first connecting portion and a second connecting portion coaxially arranged on both sides;

[0023] Two spring torsion devices, each of which is a spring torsion device as claimed in any one of claims 1 to 4;

[0024] The first connecting portion and the second connecting portion are coaxially connected to an active member of a spring torsion device respectively;

[0025] The two spring torsion devices are centrally symmetrically distributed so that the axially constrained rotation planes of the two spring torsion devices are distributed on both sides of the rotation direction and when the application connector is driven to rotate, one spring torsion device is in the motion contact process of the helical motion pair and the other spring torsion device is in the lateral non-transmission rotation process of the axially constrained rotation plane.

[0026] Finally, the present invention also provides a manipulation device, which is configured to have any one of the above-mentioned spring torsion systems;

[0027] Wherein, the application connector includes an application portion located between the first connection portion and the second connection portion for achieving force application.

[0028] The beneficial effects of the present invention are:

[0029] The technical solution of the present invention is a spring torque device, a spring torque system and an operating device. The specific solution is that the spring torque device includes a sleeve and an axial torque adjustment member, a compression spring, a follower and an active member arranged in the sleeve; the two ends of the compression spring respectively abut the axial adjustment member and the follower to apply elastic force to the axial torque adjustment member and the follower; the active member and the follower cooperate through a spiral motion pair transmission to realize that when the active member is rotated along a first direction by an external force, the follower is driven to move upward to compress the compression spring and reset in a second direction opposite to the first direction under the action of the compression spring after the external force is removed; the upper end of the main shaft has an adjustment part, which is exposed through the upper end opening of the hollow part of the sleeve to cooperate with an external device to realize the rotation adjustment of the main shaft. In actual use, the rotation control of the main shaft can be realized by applying torque to the adjustment part, thereby controlling the displacement of the axial torque adjustment member and finally realizing the compression amount adjustment of the compression spring to meet the adjustment of the torque output and meet the user's use needs. At the same time, the spring torque system and the operating device proposed in the present invention can also adjust the torque output to meet the torque requirements of different application scenarios, which meets the requirements of ergonomics. In addition, the spring torque system and the operating device can adjust the torque individually in different angle ranges to meet different requirements, which meets the requirements of ergonomics. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the appearance structure of the spring torsion device of the present invention;

[0031] Figure 2 It is a schematic diagram of the internal structure of the spring torsion device of the present invention;

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

[0033] Figure 4 The structural diagram of the main axis;

[0034] Figure 5 It is a schematic diagram of the structure when the helical surfaces of the driven member and the active member are in contact;

[0035] Figure 6 It is a schematic diagram of the driven member and the active member after axial separation;

[0036] Figure 7 It is a structural diagram of the active component;

[0037] Figure 8 This is a schematic diagram of the coordination between the main shaft and the end cover structure;

[0038] Fig. 9 Schematic diagram of the structure of the axial torque adjustment part

[0039] Fig.10 It is a structural schematic diagram of the first spring torque system;

[0040] Fig.11 is a structural schematic diagram of the second spring torsion system;

[0041] Fig.12 A schematic diagram of the structure of a control device. DETAILED DESCRIPTION

[0042] The following will be combined with the attached Figure 1 To Attachment Fig.12 The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that if there are directions involved in the embodiments of the present invention, they shall be based on the directions shown in the drawings. For example, the top and bottom of the first embodiment are based on Figure 1 and Figure 2 Please refer to the diagram for details. Figure 1 and Figure 2 The upper side is the upper side of the spring torque device. Figure 1 and Figure 2 The bottom of the spring torsion device is below. If a certain posture changes, the directional indication will also change accordingly. At the same time, it should be noted that the positive and negative directions, the first direction, the second direction, etc. described in the present invention are only used to express a specific relative orientation and do not represent a clear orientation. In addition, it should be noted that the spiral motion pair formed by the active member and the driven member of the present invention can be a spiral in the positive direction (for example, defined as right-handed) and a spiral in the reverse direction (for example, defined as left-handed).

[0044] The spring torque device is a common structural component in the mechanical field, which can output torque to meet the use requirements of different scenarios. Generally speaking, spring torque devices with different torque outputs are used in different usage scenarios. If different torque outputs are desired in a given scenario, the current technical solution cannot be achieved, and it can only be set at the factory, and users can only use different products to meet the requirements. To this end, the present invention 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 adjustment member to achieve the torque output value.

[0045] Embodiment 1:

[0046] like Figure 1 and Figure 2 As shown, Figure 1The schematic diagram of the appearance of the spring torsion device of the present invention is shown. Figure 2 FIG. 2 shows a schematic diagram of the internal structure of the spring torsion device of the present invention. Figure 1 and Figure 2 As shown, the spring torque device of the present invention comprises a sleeve 10, a main shaft 20, an axial torque adjusting member 30, a compression spring 40, a driven member 50 and an active member 60. The axial torque adjusting member 30, the compression spring 40, the driven member 50 and the active member 60 are arranged from top to bottom in the hollow portion 101 of the sleeve 10, and the axial torque adjusting member 30, the compression spring 40, the driven member 50 and the active member 60 are sleeved on the outer periphery of the main shaft 20 from top to bottom.

[0047] Among them, Figure 3 The sleeve 10 is a hollow structure having a hollow portion 101. The upper and lower ends of the hollow portion 101 are open, i.e., an upper opening 102 and a lower opening 103. Preferably, the sleeve 10 adopts a cylindrical sleeve structure. In addition, the spring torque device of the present invention needs to be assembled in a specific position, such as fixed on an assembly plate. In order to facilitate assembly, in some embodiments, the sleeve 10 is designed as a stepped structure. Specifically, as Figure 1 and Figure 3 As shown, a convex portion 104 protruding outward is provided in the middle position of the sleeve 10, and the two ends are small end portions. During assembly, the entire spring torsion device is fixedly assembled on the convex portion 104, for example, by a clamp structure clamp. In order to ensure the strength of the entire spring torsion device, the present invention preferably uses a metal material to make the sleeve 10, such as stainless steel, iron, copper, aluminum alloy, etc. In order to ensure the bite force of the clamp when the clamp is fixed and to ensure the stability of the installation, the outer surface of the convex portion 104 is designed to be a structure of anti-slip teeth. Specifically, a rack structure is provided along the axial direction on the outer surface of the convex portion 104. In this way, when fixing, the clamp can cooperate more closely with these rack structures.

[0048] like Figure 2 As shown, the main shaft 20 and the first limit 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 limit assembly 80, and the second limit assembly 80 is located below the active member 60 so that the active member 60 is at least partially located in the sleeve 10.

[0049] like Figure 4As shown, in a specific embodiment, the main shaft 20 is in a stepped distribution pattern. It includes an upper portion 201, a middle portion 202 and a lower portion 203. The outer diameter of the upper portion 201 is larger than that of the middle portion 202, and the outer diameter of the middle portion 202 is larger than that of the lower portion 203. Of course, it is not limited to this, and any suitable shape of the main shaft 20 is acceptable. Figure 2 As shown, the first limit assembly 70 includes an end cover structure 701, and the end cover structure 701 has a stepped through hole, the upper end of which is larger than the lower end. The upper part 201 of the main shaft 20 is arranged at the upper end portion of the stepped through hole, and the middle part 202 of the main shaft 20 passes through the lower end portion of the stepped through hole and extends downward. The shape of the end cover structure 701 is a stepped structure. The outer dimensions of the upper part are larger than the dimensions of the upper end opening 102 of the hollow part 101 of the sleeve 10, and the lower part of the end cover structure 701 matches the shape and size of the hollow part 101, so that the end cover structure 701 is just inserted into the hollow part 101 and constrains the downward movement of the main shaft 20 in the axial direction. In order to ensure that the spindle 20 and the end cover structure 701 can be fixed together and prevent the spindle 20 from falling off upward, the first limiting assembly 70 also includes a second compression spring 702 and a first stopper 703. The first stopper 703 and the spindle 20 can be detachably assembled. The second compression spring 702 is sleeved on the outer periphery of the spindle 20 and is located between the first stopper 703 and a first thrust bearing 704. The first thrust bearing 704 is sleeved on the spindle 20 and its upper end abuts against the end cover structure 701, and its lower end abuts against the second compression spring 702. Such a solution enables the second compression spring 702 to generate an axial downward force on the first stopper 703, thereby generating a downward force on the spindle 20, ensuring that the spindle 20 and the end cover structure 701 are stably assembled and do not fall off easily.

[0050] like Figure 8As shown, the figure shows a schematic diagram of the assembly of the end cover structure 701 and the main shaft 20. In detail, the end cover structure 701 has a radially arranged locking hole 7011, and the locking hole 7011 has a limit spring 705 and a steel ball 706, and the main shaft 2 has a limit groove 206 on the outer side of the hole of the end cover structure 701. During assembly, the limit spring 705 and the steel ball 706 are both arranged in the locking hole 7011, and under the elastic force of the limit spring 705, the steel ball 706 is partially locked in the limit groove 206. In this way, the steel ball 706 partially falls in the limit groove 206 and is partially located in the locking hole 7011, so that the steel ball 706 can lock the main shaft 20. That is, when there is no external force or the external force does not exceed the predetermined force, the main shaft 20 will not rotate. When the spindle 20 is rotated under the force, the steel ball 706 is squeezed into the locking hole 7011 under the action of the spindle 20, so that the spindle 20 can continue to rotate to squeeze 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 spindle 20 is realized. Of course, it should be clear that the torsion generated by the compression spring 40 is not enough to drive the spindle 20 to break through the restraint of the limiting spring 705. It should be understood that in this solution, along the circumferential direction, the peripheral side of the end cover structure 701 has a plurality of the limiting grooves 206, and at different rotation angles, the steel ball 706 can fall into different limiting grooves 206 to achieve locking. Of course, in addition to this, the steel ball 706 can also be a friction member, which, after assembly, is in friction contact with the outer peripheral side of the end cover structure 701 to generate rotation constraints on the spindle 20. Of course, in other embodiments, the limit spring 705 and the steel ball 706 may not be provided, and instead the end cover structure 701 of the main shaft 20 is used to frictionally contact the outer peripheral side of the main shaft 20 to resist the torsion generated by the compression spring 40 to prevent rotation when there is no external force or the external force is not large enough.

[0051] like Figure 2 and Figure 4 As shown, the axial torque adjustment member 30 is threadedly connected to the main shaft 20 and is constrained to cooperate with the sleeve 10 to achieve axial reciprocating motion during the rotation of the main shaft 20. Specifically, a thread structure 204 is provided on the outer periphery of the upper half of the middle portion 202 of the main shaft 20. Correspondingly, as Fig. 9As shown, the axial torque adjustment member 30 is provided with a sleeve hole 302, and the sleeve hole 302 is provided with an internal thread. During assembly, the sleeve hole 302 of the axial torque adjustment member 30 is sleeved on the threaded structure 204 to achieve threaded connection. Wherein, a first guide slot hole 105 arranged along the axial direction is provided at the sleeve 10, and a first guide member 301 is detachably connected to the outer periphery of the axial torque adjustment member 30. The first guide member 301 is located at the first guide slot hole 105 and generates abutment constraints in the circumferential direction, so that the first guide member 301 can only move up and down along the first guide slot hole 105. That is, the main shaft 20, the axial torque adjustment member 30, the first guide member 301 and the first guide slot hole 105 of the sleeve 10 constitute a threaded screw slider structure. When the main shaft 20 rotates, the axial torque adjustment member 30 generates an axial up and down reciprocating motion due to the limiting effect of the first guide slot hole 105 of the sleeve 10 on the first guide member 301. When the axial torque adjusting member 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 torque adjusting member 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, etc. from accumulating at the first guide slot 105, the present invention sleeves a second housing 107 on the periphery of the area where the first guide slot 105 is set.

[0052] like Figure 2 As shown, the two ends of the compression spring 40 respectively abut against the axial adjustment member 30 and the follower 50 to apply elastic force to the axial torque adjustment member 30 and the follower 50. Specifically, in the present technical solution, the compression spring 40 is always in a compressed state, or when the axial torque adjustment member 30 moves up to the uppermost position and the follower 50 is located at the lowermost position, the compression spring 40 is just in a free state. That is, except when the axial torque adjustment member 30 moves up to the uppermost position and the follower 50 is located at the lowermost position, the compression spring 40 is in a free state, and at any other position, the compression spring 40 is in a compressed state. The elastic force generated by the compression spring 40 generates an upward force on the axial torque adjustment member 30 and a downward force on the follower 50.

[0053] In this embodiment, the follower 50 is constrained to cooperate with the sleeve 10 so as to reciprocate along the axial direction when driven. That is, the follower 50 can only reciprocate in the axial direction. Figure 2As shown, the outer side of the follower 50 is detachably connected with a second guide member 501, and the lower part of the sleeve 10 is provided with a second guide slot 106 arranged in the axial direction. The second guide member 501 is located in the second guide slot 106 and abuts against the side wall forming the second guide slot 106 in the circumferential direction. In this way, the follower 50 can only move in the axial direction when subjected to force. In addition, in order to prevent dust, impurities, etc. from accumulating at the second guide slot 106, the present invention sleeves a third housing 108 on the outer periphery of the area where the second guide slot 106 is provided.

[0054] It should be clear that in the present invention, the active member 60 and the driven member 50 cooperate with each other through the helical motion pair to realize that when the active member 60 is rotated in the 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 subjected to a force 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 driven member 50 to move away from the active member 60 axially, that is, the driven member 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 be reset in the direction of the restoring elastic force, and the compression amount will be reduced, that is, the compression spring 40 rebounds, driving the driven member 50 to move downward. When the driven member 50 moves downward, the active member 60 is driven to rotate along the second direction to restore to the initial state. When the driven member 50 moves downward, due to the action of the spiral motion pair of the active member 60 and the driven member 50, the active member 60 is driven to rotate along the second direction until the compression spring 40 is completely reset to the initial position. In this way, a torsional stroke is achieved.

[0055] In addition, such as Figure 2 As shown, the second limiter assembly 80 is, for example, a second retaining spring, which is detachably clamped on 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 in an axial direction, 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, the upper end of the second thrust bearing 90 abuts against the active member 60, and the lower end of the second thrust bearing 90 abuts against the second retaining spring.

[0056] It is very important, as one of the inventive points of the present invention, that Figure 1 and Figure 2 As shown, 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 rotation adjustment of the main shaft 20 .

[0057] It should be understood that the adjustment part 205 is used in conjunction with an external tool. That is, the tool cooperates with the adjustment part 205 to rotate the rotation angle of the spindle 20. For example, when the rotation is forward and reverse (such as Figure 2 When the main shaft 20 is rotated in the right direction as shown in the figure, the axial torque adjustment member 30 will move downward, and the compression spring 40 will be further compressed, so the elastic force generated by the compression spring 40 will become larger. Figure 2 When the motor rotates in the forward direction (as shown in the figure), the required torque will be greater. Figure 2 When the main shaft 20 is rotated in the left direction as shown in the figure, the axial torque adjustment member 30 moves upward, and the compression amount of the compression spring 40 becomes smaller, and the elastic force generated will become smaller. Then, when it is necessary to rotate the main shaft 20 in the first direction ( Figure 2 When the active member 60 is rotated to the left (as shown in the figure), the required torque will become smaller. The present solution realizes the adjustment of the torque of a spring torque device. That is, the main shaft 20 can be adjusted in the forward or reverse direction according to the use requirements of different people. For example, when the spring torque device is used for a remote control handle, for adults, it can be adjusted in the reverse direction to increase the torque to meet the adult's force habits. Similarly, if the user is a child, the main shaft 20 can be adjusted in the forward direction to reduce the torque to meet the child's force habits. That is, the ergonomic force application habits are met. In general, people who need greater torque can adjust the main shaft 20 in the reverse direction; people who need less torque can adjust the main shaft 20 in the forward direction. The problem that the traditional torque device can only have a specific initial torque is solved, which greatly meets the user's use needs. Moreover, after the spring torque device of the present invention is assembled, it can be adjusted at any time according to the use requirements, which is very convenient.

[0058] Specifically, Figure 1 and Figure 2 As shown, the adjustment portion 205 is a slotted hole formed on the top surface of the spindle 20 and recessed inward. The slotted hole is, for example, a cross-shaped hole for use with a cross screwdriver; the slotted hole can also be a hexagonal slotted hole for use with a hexagonal key. Of course, it should be clear that the slotted hole can be any suitable shape to adapt to different tools. It is very important that the adjustment portion 205 is exposed, so that it is easy for tools to be inserted for matching and adjustment.

[0059] In some other embodiments, the adjustment portion 205 is recessed in the hollow portion 101 of the sleeve 10; it may also extend axially to the outside of the sleeve 10, for example, the adjustment portion 205 is a protruding structure extending outside the sleeve 10. Such a solution may also facilitate the use of tools to clamp the protruding structure to achieve forward and reverse adjustment.

[0060] 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, and 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 of the follower 50 and the active member 60 after the spiral motion pair is disengaged. The bottom end mentioned here for the follower 50 refers to the bottom in the direction away from the active member 60; similarly, for the active member 60, the bottom 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, and then 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 scheme is convenient for controlling the distance moved by the driven member 50 and adapting to the requirements 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 of the lateral non-transmission rotational movement after the spiral motion pair of the driven member 50 and the active member 60 described in the present invention is when the active member 60 moves to the 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 the further rotation thereafter will not drive the driven member 50 to move axially, but 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 axial constraint rotation plane along the second direction and further rotates but does not generate axial movement of the driven member 50 is defined as the no-load zone.

[0061] In detail, the opposite ends of the driven member 50 and the active member 60 have a force-applying portion formed axially outward, each of the force-applying portions has a helical surface formed axially inclined, and 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.

[0062] 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 spirals from the upper right to the lower left to form a first helical surface 503, 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 spirals from the lower left to the upper right to form a second helical surface 602, 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 protection scope of the present invention. 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 surfaces, and the axially constrained rotation plane parts have the same structural design, but they are oriented in the direction of the idea during assembly, such as Figure 6 Of course, this is only a specific embodiment and cannot limit the protection scope of the present invention.

[0063] 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, 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 has a preset space to satisfy the active member 60 for further rotation 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 just contacts 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 in the left side, 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 to allow the active member 60 to further rotate in the second direction, thereby forming a second unloaded area 604.

[0064] In a specific embodiment, when the lower end surface of the first force applying part 502 contacts the second axial constraint rotation plane 603, the upper end surface of the second force applying part 601 also contacts the first axial constraint rotation plane 504. In this way, the rotation process of the driven member 50 and the active member 60 is more stable.

[0065] Further, such as Figure 6 As shown, the driven member 50 and the active member 60 both have two force-applying parts evenly distributed along the circumferential direction, and the two force-applying parts of the driven member 50 and the active member 60 cooperate to form two pairs of spiral motion pairs. That is, the driven member 50 has two first force-applying parts 502 along the circumferential direction, and the active member 60 has two second force-applying parts 601 along the circumferential direction. And corresponding spiral surfaces are evenly distributed in the circumferential direction and arranged in the same direction. Using two sets of corresponding force-applying parts to realize spiral transmission cooperation is more conducive to the stability of the movement of the driven member 50 and the active member 60.

[0066] The technical solution of this embodiment is advantageous for realizing a two-stage torque design when two spring torque assemblies are used in combination. The two-stage torque design will be described in detail below.

[0067] 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, and the connecting portion 605 extends to the bottom of the sleeve 10. When in use, since it is exposed, it is very convenient to assemble. Figure 7 As shown, the connecting portion 605 has an axially arranged assembly hole 6051, and a radially arranged fixing hole 6052 is provided at the connecting portion 605, and the fixing hole 6052 is communicated with the assembly hole 6051. During assembly, the structure of the application scenario (such as a connecting shaft) extends into the assembly hole 6051, and then the connecting shaft can be locked by passing a screw through the fixing hole 6052.

[0068] Embodiment 2:

[0069] In another embodiment, if Fig.10As shown, the present invention also provides 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 connection portion 1001 and a second connection portion 1002 coaxially arranged on both sides.

[0070] Each of the spring torsion devices 200 is any one of the spring torsion devices without an unloaded area as described above; the first connection portion 1001 and the second connection portion 1002 are coaxially connected to the active member 60 of a spring torsion device 200. For example, the first connection portion 1001 is assembled and connected to the assembly hole 6051 of the active member 60 of the spring torsion device 200 on the left; the second connection portion 1002 is assembled and connected to the assembly hole 6051 of the active member 60 of the spring torsion device 200 on the right.

[0071] In this solution, the torque generated by the spring torque devices 200 on the left and right sides can be in the same direction. Figure 8 As shown, when the application connector 100 rotates upward in the paper direction, the active member 60 rotates at the same time, and drives the respective driven members 50 to axially squeeze the corresponding compression spring 40 outward to increase the torque. In this embodiment, the torque of the entire application connector 100 is increased by the torque of the two spring torque devices 200.

[0072] It should be understood that in this embodiment, there may be several situations. For example, when the application connector 100 is initially rotated, the two spring torque devices 200 enter a state of squeezing the compression spring 40 .

[0073] Embodiment 3

[0074] Preferably, as a more preferred method, the present invention focuses on the case where two spring torsion devices 200 are used with an unloaded area. Fig.11As shown, this figure only shows the structure of the driven member 50 and the active member 60 with respect to the spring torsion device 200, and the rest of the parts are not shown, but combined with the description of the present invention, this scheme 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. 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 member 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 member 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 member 60 drives the driven member 50 to move axially when it rotates under external force as the working state. The unloaded area after the spiral motion pair of the active member 60 and the driven member 50 disengages and enters the axially constrained rotation plane is the non-working state. In other words, if Fig.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 Fig.11 The upper spring torque device shown in FIG. 1 ) enters the working state, and the second spring torque device 200 (as shown in FIG. Fig.11 The spring torque 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 torque device 200 enters the non-working state, while the second spring torque device 200 is in the working state. Fig.11 Left direction as shown) and reverse direction ( Fig.11 The right direction shown in the figure) can be applied by 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 realizing the torque adjustment and graded torque design between the partitions mentioned above. It should be noted that the partitions are as follows Fig.11 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 constitutes the torque adjustment in the sub-interval. It should be noted that in this embodiment, when the initial position is Fig.11As shown, the corresponding spiral surface of one of the two spring torque devices just touches, and the end face of the force-applying part corresponding to the other spring torque device just happens to be located at the corresponding axial constraint rotation plane. In this way, whether the application connector 100 is rotated to the left or to the right, torque can be generated to produce a torque effect on the application connector 100. The specific torque loosening and tightening effect can be achieved by adjusting different main shafts 20 according to actual needs. In short, through the technical solution of this embodiment, it is possible to ensure that the torque system generates torque in both positive and negative directions and can adjust the torque size at different rotation angles according to actual conditions, meet the needs of separate adjustment of the torque size in different angle ranges, meet the use of users, and make it more in line with the force requirements and force habits of human engineering.

[0075] 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 no-load area, and the second spring torque device 200 is in the state of starting to squeeze the compression spring 40; after the application connector 100 is flipped to the set angle, the first spring torque device 200 enters the working area of ​​the compression spring 40, and at this time, a sudden increase in force needs to be applied to the application connector 100. At this time, when the first spring torque device 200 intervenes in the entire rotation process of the application connector 100, the required torque acting on the application connector 100 suddenly increases, and the critical point at this time forms the connection torque design described above. That is, in the first rotation angle interval, it is only necessary to overcome the elastic force of the second spring torque device 200. In the second rotation angle interval, it is necessary to overcome the elastic forces of the first and second spring torque devices 200 at the same time. Of course, it can also be designed to enter the working area of ​​the compression spring 40 when rotating to the right, and its specific implementation process is the same as rotating to the left, which will not be repeated here.

[0076] Embodiment 4:

[0077] See also Fig.12, this embodiment proposes a manipulation device, which is configured to have any of the above-mentioned spring torque systems; wherein the application connector includes an application part 1003 located between the first connection part 1001 and the second connection part 1002 for realizing the application of force. It should be noted that the spring torque system can be the spring torque system described in Example 2 or Example 3. This embodiment applies the corresponding spring torque system to a specific manipulation device. As is known to all, according to different force requirements, the application part 1003 can be applied to different scenarios, and the application part 1003 can be connected to fix any specific external device required. For example, the application part 1003 can be connected to fix a gear or a pulley to achieve torque magnitude and torque adjustment at different angles. For example, the manipulation device can be a device with a handle, and the corresponding handle is connected to the application part 1003, and different torques can be obtained when the handle is bent to meet different torque adjustments. For another example, the application part 1003 of the manipulation device can be a game handle, and the torque magnitude requirements are different in different control states. Therefore, the technical solution of this embodiment can meet the requirements of designing different torques in the forward and reverse directions, and can also meet the adjustment requirements of different people for different torques, meet the ergonomic force requirements, and meet the needs of the market.

[0078] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A spring torque 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 arranged in the hollow portion (101); an axial torque adjustment member (30), a compression spring (40), a driven member (50) and an active member (60) are arranged from top to bottom in the hollow portion (101) of the sleeve (10); the axial torque adjustment member (30), the compression spring (40), the driven member (50) and the active 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 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 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 to cooperate through a spiral motion pair so as to drive the driven member (50) to move upward when the active member (60) is rotated along a first direction by an external force so as to compress the compression spring (40) and to return to its original position 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) is provided with 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 realize rotation adjustment of the main shaft (20).

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

3. A spring torque 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 as claimed in claim 3, characterized in that: The opposite ends of the driven member (50) and the active member (60) have a force-applying portion formed axially outward, and each of the force-applying portions 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 are in surface contact 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 as claimed in claim 4, characterized in that: The driven member (50) and the active member (60) both have two force-applying parts evenly distributed along the circumferential direction, and the two force-applying parts of the driven member (50) and the active member (60) respectively cooperate to form two pairs of 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 restrict 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 component (60) so that the active component (60) is at least partially located in the sleeve (10).

8. A spring torsion system, characterized in that: is configured with: An application connector (100) comprises a first connector (1001) and a second connector (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 it is configured to have: An application connector (100) comprises a first connector (1001) and a second connector (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 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 control 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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