A torsion spring force storage fixture

Abstract

The present invention relates to the technical field of injection pen assembly, and in particular to a torsion spring force storage fixture, comprising: a support seat, the support seat comprising a base plate and a support member; a clamping device, mounted on the base plate, and provided with a mounting hole; the clamping device comprises a fixed platform, a pair of clamping blocks mounted on the fixed platform, and a slide plate for pulling the pair of clamping blocks to move; the clamping blocks are provided with a slide bar, and the slide plate is provided with a slide groove matching the slide bar; the slide groove at least comprises a traction part forming an angle with the movement direction of the slide plate; a rotating device, connected to the top end of the rotating part, driving the rotating part to rotate and count; a lifting mechanism, fixed on the support member, and a driving end of the lifting mechanism is fixed on the rotating device, driving the rotating device to perform lifting and lowering movements.

Description

Technical Field

[0001] The invention relates to the technical field of injection pen assembly, and in particular to a torsion spring force storage fixture. Background Art

[0002] With the increasing number of diabetic patients, insulin pens, as a convenient and efficient self-injection device, have become a daily necessity for the majority of diabetic patients. However, during the injection process of traditional insulin pens, patients often need to manually press the injection button to complete the injection, which is not only inconvenient to operate, but also difficult to accurately control the injection force. In addition, the structure of the insulin pen is relatively complex, and it is necessary to ensure that the torsion spring force storage fixture can be tightly and stably matched with other components of the insulin pen to achieve a reliable injection function. Secondly, the elastic force of the torsion spring needs to be precisely controlled to ensure that the injection force is moderate, which can effectively penetrate the skin without causing excessive pain to the patient.

[0003] When existing insulin pens store power in torsion springs, they usually count and store power manually. However, this is not only inefficient, but also difficult to control, which may cause the torsion spring to store too much or too little power, thus affecting the use of the insulin pen. Therefore, external equipment (manual jigs or automated equipment) is required to store power in the torsion springs. In the early stages of product development, it is impractical to purchase a large number of expensive automated production equipment and high-precision testing equipment. Manual jigs can build a simple assembly platform, and can also achieve rapid coordinated adjustments when the product is updated. When using jigs to store power in torsion springs, it is necessary not only to ensure the stability of the insulin pen during the clamping process, but also to determine the size of the torsion spring's power storage, so as to achieve automation later and prepare for greatly improving production efficiency.

[0004] Therefore, the present application has developed a torsion spring force storage fixture to solve the problems existing in the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a torsion spring force storage manual fixture to solve the problem in the prior art that the torque value cannot be accurately detected in real time when the torsion spring is storing force, and the accuracy problem of insulin dosage injected by an insulin pen.

[0006] The technical solution of the present invention is: a torsion spring force storage fixture, comprising:

[0007] A support base, the support base comprising a bottom plate and a support member;

[0008] A clamping device is mounted on the bottom plate, and a mounting hole is provided on the clamping device; the clamping device comprises a fixed platform, a pair of clamping blocks mounted on the fixed platform, and a slide plate for pulling the pair of clamping blocks to move; a slide bar is provided on the clamping block, and a slide groove matching the slide bar is provided on the slide plate; the slide groove at least comprises a pulling portion forming an angle with the movement direction of the slide plate;

[0009] A rotating device, connected to the top of the rotating part, drives the rotating part to rotate and count;

[0010] The lifting mechanism is fixed on the supporting member, and the driving end of the lifting mechanism is fixed on the rotating device to drive the rotating device to perform lifting motion.

[0011] Preferably, a slide rail and a guide groove are provided on the support seat along the width direction of the fixed platform, the fixed platform is arranged on the slide rail and slides along the direction of the slide rail, one end of the slide rod extends downward into the guide groove, and the guide groove includes a first guide portion and a second guide portion, during the movement of the slide plate, the first guide portion and the slide groove jointly limit the slide rod, and only an opening and closing action of a pair of the clamping blocks relative to the fixed platform occurs; the second guide portion and the slide groove jointly limit the slide rod, and only a translational movement of the fixed platform relative to the support seat occurs.

[0012] Preferably, the second guide portion is arranged along the width direction of the fixing platform, and the first guide portion is perpendicular to the second guide portion.

[0013] Preferably, a pen case assembly is installed in the mounting hole, the rotating part is located at the top of the pen case assembly, the fixed platform is fixed to the bottom plate or slidably arranged on the bottom plate, and when the slide plate slides in the fixed platform, the pair of clamping blocks move along the length direction of the fixed platform to clamp or move away from the pen case assembly, and the moving direction of the pair of clamping blocks is perpendicular to the moving direction of the slide plate.

[0014] Preferably, the traction part is arranged obliquely, the two traction parts extend toward the direction of the support member, and the distance between the two traction parts gradually increases, and at most one extension groove is provided at each end of the traction part, and the extension direction of the extension groove is parallel to the moving direction of the slide plate.

[0015] Preferably, the distance between the two ends of the traction portion along the length direction of the fixed platform is smaller than the length of the first guide portion. When the slide bar slides on the slide groove, it also slides on the second guide portion accordingly. When the slide bar slides on the second guide portion and cannot move on the slide groove, the fixed platform moves together with the slide bar.

[0016] Preferably, the rotating device includes a fixed seat, a control rod, a support plate, a connecting rod and a counter, the fixed seat is slidably arranged on the base plate, a pair of the support plates and the counter are fixed on the fixed seat, one end of the control rod passes through a pair of the support plates and is connected to the counter, the connecting rod is located between the pair of the support plates and is axially arranged along the pen case assembly, one end of the connecting rod is connected to the top of the pen case assembly, and the other end is connected to the outer wall surface of the control rod through a bevel gear set.

[0017] Preferably, the inner wall surface at the top of the pen housing assembly and the outer wall surface at the bottom of the connecting rod are both provided with a plurality of protrusions, and when the connecting rod rotates, the corresponding plurality of protrusions abut against each other, so that the pen housing assembly rotates together with the connecting rod.

[0018] Preferably, the driving end of the lifting mechanism is arranged on the top of the fixed seat, and the fixed end of the lifting mechanism is fixed on the support seat. By changing the position of the driving end, the fixed seat slides on the bottom plate to adjust the position of the connecting rod and the pen shell assembly.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] (1) After clamping and pressuring the insulin pen, a rotating control rod is used to drive the connecting rod to rotate through a bevel gear set. The outer wall of the bottom of the connecting rod and the inner wall of the top of the rotating part abut against each other, so that the rotating part rotates together with the connecting rod. One end of the torsion spring is connected to the rotating part, and the torsion spring rotates with the connecting rod to store force on the torsion spring. One end of the control rod is connected to a counter, and the counter can judge the amount of force stored in the torsion spring according to the number of turns, thereby realizing the control of the amount of force stored in the torsion spring; avoiding the phenomenon of slippage during manual operation and affecting the force storage of the torsion spring;

[0021] (2) A guide groove is added to the support seat, and the two ends of the slide rod slide in the slide groove and the guide groove respectively. The slide plate is pushed to make the slide rod slide in the slide groove and the second guide part first to achieve the clamping of the pen case assembly, and then slide in the first guide part to achieve the sliding of the fixed platform on the slide rail; the slide plate is pulled to make the slide rod slide in the first guide part first to achieve the sliding of the fixed platform on the slide rail, and then slide in the first guide part and the slide groove to achieve the movement of the clamping block to release the pen case assembly, thereby completing the movement of first clamping and then pushing inward, and first pulling out and then releasing the pen case assembly during the clamping process of the insulin pen, thereby achieving the stability of the assembly and movement of the pen case assembly; when the clamping device can achieve horizontal displacement, there is no need to reserve too much space between the clamping device and the rotating device for the placement of the insulin pen. At this time, the space between the clamping device and the rotating device can be reduced, and the overall height of the torsion spring force storage fixture can be further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0023] Figure 1 It is a structural schematic diagram of a torsion spring force storage fixture according to the present invention;

[0024] Figure 2 It is a structural schematic diagram of the clamping device of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the rotating device of the present invention;

[0026] Figure 4 A top view of the clamping device in the second embodiment of the present invention located on a support seat;

[0027] Figure 5 This is a schematic diagram of the structure of the clamping device in the second embodiment of the present invention located on the support seat;

[0028] Figure 6 is a schematic diagram of the guide groove described in the second embodiment of the present invention;

[0029] Figure 7 This is a motion trajectory diagram of the present invention pushing the slide plate to clamp the pen shell assembly;

[0030] Figure 8 A motion trajectory diagram of pulling out the slide plate to release the pen housing assembly of the present invention;

[0031] Fig. 9 It is a cross-sectional view of the pen housing assembly of the present invention.

[0032] Wherein: 1, support seat; 11, slide rail; 12, guide groove; 13, bottom plate; 14, support member; 121, first guide part; 122, second guide part;

[0033] 2. Clamping device; 21. Mounting hole; 22. Slide plate; 23. Fixing platform; 24. Clamping block; 25. Slide bar; 26. Slide slot; 27. Extension slot; 28. Traction part;

[0034] 3. Pen case assembly; 31. Fixed part; 32. Rotating part; 33. Torsion spring; 34. Connecting piece;

[0035] 4. Rotating device; 41. Fixed seat; 42. Control rod; 43. Support plate; 44. Connecting rod; 45. Counter;

[0036] 5. Lifting mechanism; 51. Driving end; 52. Fixed end. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with specific embodiments:

[0038] like Figure 1-Figure 3 As shown, a torsion spring force storage fixture includes a support base 1, a clamping device 2, a pen shell assembly 3, a rotating device 4 and a lifting mechanism 5. The clamping device 2 is installed on the support base 1 and is provided with a mounting hole 21. The pen shell assembly 3 is provided in the mounting hole 21. The pen shell assembly 3 includes a fixed part 31 and a rotating part 32. A torsion spring 33 is installed in the rotating part 32. The torsion spring 33 is arranged along the axial direction of the fixed part 31, and one end away from the fixed part 31 is connected to the rotating part 32, so that the torsion spring 33 can be driven to rotate when the rotating part 32 rotates. A connecting piece 34 is provided between the rotating part 32 and the fixed part 31. The rotating part 32 will be engaged with the connecting piece 34 during the rotation process to achieve The fixation of the rotating part 32 also drives the connecting member 34 to rotate on the fixed part 31. The connecting member 34 is a dial with scales engraved on the outer surface. When in use, the rotation amount can be judged by the scales on the dial. When storing force of the torsion spring 33, the driving end 51 of the lifting mechanism 5 is first used to slide the rotating device 4 on the support seat 1. When it moves to a suitable position, the fixed end 52 of the lifting mechanism 5 is rotated to fix the rotating device 4. Then the rotating device 4 starts to drive the rotating part 32 to rotate, and the number of rotations is recorded by the counter 45. The torque of the torsion spring 33 is judged by the number of rotations, thereby realizing the control of the stored force of the torsion spring 33.

[0039] Among them, Figure 3 As shown, the rotating device 4 includes a fixed seat 41, a control rod 42, a support plate 43, and a connecting rod 44. The fixed seat 41 is slidably connected to the base plate 13. The two support plates 43 and the counter 45 are fixed on the fixed seat 41. The control rod 42 passes through the two support plates 43 and is connected to the counter 45. The counter 45 can detect the number of rotations of the control rod 42. One end of the connecting rod 44 is connected to the rotating part 32, and the other end is connected to the control rod 42. When the control rod 42 rotates, the control rod 42 can drive the connecting rod 44 to rotate along its own axis. The connecting rod 44 drives the rotating part 32 to rotate, and drives the torsion spring 33 to rotate to achieve the effect of storing force. The connecting rod 44 is located between the two support plates 43. The two support plates 43 provide stable support for the connecting rod 44, making it more stable and reliable in the process of transmitting force.

[0040] Furthermore, the inner wall surface of the rotating part 32 and the outer wall surface at the bottom of the connecting rod 44 are provided with a plurality of protrusions. When the connecting rod 44 rotates, the corresponding plurality of protrusions abut against each other, so that the rotating part 32 rotates together with the connecting rod 44. The design of the protrusions reduces the sliding between the rotating part 32 and the connecting rod 44, increases the contact area, and thus improves the stability of the connection. Through the mutual abutment of the protrusions, the loosening between the rotating part 32 and the connecting rod 44 can be more effectively prevented, thereby ensuring the reliability of the connection, allowing the rotating part 32 and the connecting rod 44 to rotate together, and preventing the connecting rod 44 from slipping off the rotating part 32 during rotation, resulting in the number of turns recorded by the counter 45 being inconsistent with the number of turns of the rotating part 32, and the force storage size of the torsion spring 33 cannot be accurately judged.

[0041] Preferably, the connecting rod 44 is connected to the control rod 42 through a helical gear set, which converts the rotational motion of the control rod 42 into the rotational motion of the connecting rod 44 in different directions, thereby realizing the power transmission from the control rod 42 to the connecting rod 44. The helical gear set has a large meshing area and generates a large meshing force, so it can more effectively transmit the energy accumulated by the torsion spring 33. Compared with traditional spur gears, helical gears generate less friction and energy loss during the meshing process, thereby improving the transmission efficiency.

[0042] Embodiment 1: The clamping device 2 includes a slide table and a fixed table 23, wherein the fixed table 23 is fixedly mounted on the bottom plate 13, a pair of clamping blocks 24 and a slide plate 22 are arranged in the fixed table 23, the slide plate 22 is slidably arranged in the fixed table 23 and is located above the clamping block 24, the slide bar 25 on the clamping block 24 is slidably arranged in the slide groove 26, the sliding of the slide bar 25 in the slide groove 26 increases the movement stability of the clamping block 24, so that the clamping block 24 can remain stable when clamping or releasing the pen shell assembly 3, avoiding operational errors caused by shaking or misalignment, and the sliding cooperation of the slide bar 25 and the slide groove 26 allows The position of the clamping block 24 is precisely controlled. By adjusting the position of the slide bar 25 in the slide groove 26, the clamping force of the object can be fine-tuned to ensure the stability and safety of the clamping. The traction part 28 is tilted, and the two traction parts 28 extend in the direction of the support member 14. The distance between the two traction parts gradually increases. Through the tilted traction part 28, when the slide plate 22 slides on the fixed platform 23, the slide bar 25 can slide along the extension direction of the traction part 28, so that the clamping block 24 moves in a direction perpendicular to the moving direction of the slide plate 22, so that the clamping block 24 is away from or clamps the pen shell assembly 3.

[0043] Furthermore, extension grooves 27 are respectively provided at both ends of the traction portion 28. The slide rod 25 may encounter impact force or vibration during movement. The extension grooves 27 can provide additional buffering space for these impact forces or vibrations, reduce the direct collision between the slide rod 25 and the edge of the traction portion 28, and also increase the effective length of the slide groove 26, thereby increasing the adjustment range of the slide rod 25 in the slide groove 26.

[0044] Embodiment 2: Figure 4-Figure 9 As shown, in order to ensure that the pen shell assembly 3 can be replaced smoothly and the installation space is not increased in the axial direction of the pen shell assembly 3, and the space occupied by the fixture is reduced, the fixed platform 23 is slidably set on the bottom plate 13, and a slide rail 11 is provided on the bottom plate 13 along the width direction of the fixed platform 23, so that the fixed platform 23 can move along the slide rail 11 to achieve the pulling out and pushing of the fixed platform 23, and the slide bar 25 extends downward to the guide groove 12 located on the support seat 1, and the guide groove 12 includes a first guide portion 121 and a second guide portion 122, the first guide portion 121 is arranged along the length direction of the fixed platform 23, the second guide portion 122 is perpendicular to the first guide portion 121, and the first guide portion 121 is arranged away from the support member 14. After the pen shell assembly 3 is placed on the fixed platform 23, the slide plate 22 is pushed to approach the support member 14, and at this time, the upper end of the slide bar 25 is located close to the slide groove 26 When the slide plate 22 is pushed, the slide groove 26 is tilted, and the slide plate 25 also slides along the first guide portion 121 when sliding along the slide groove 26, so that the clamping block 24 gradually approaches the pen shell assembly 3. When the slide bar 25 moves to the end of the second guide portion 122 away from the support member 14 and the other end of the slide groove 26, a pair of clamping blocks 24 clamp the pen shell assembly 3 to prevent the pen shell assembly 3 from shaking during movement. The slide plate 22 is continued to be pushed. Because the pen shell assembly 3 is clamped, the clamping block 24 cannot continue to move along the first guide portion 121, and the slide bar 25 cannot move synchronously. Therefore, the slide bar 25 moves along the second guide portion 122 and drives the fixed platform 23 to move along the slide rail 11, pushing the fixed platform 23 to the bottom of the rotating device 4, so that the rotating part 32 corresponds to the position of the connecting rod 44.

[0045] like Figure 7As shown, when the pen case assembly 3 is installed and clamped, the movement trajectories of the slide groove 26, the slide bar 25 and the guide groove 12 are that initially, the slide bar 25 is located at a position where the first guide portion 121 is away from the pen case assembly 3, and the slide plate 22 is pushed so that the slide plate 22 gradually approaches the support member 14, and the traction portion 28 causes the slide bar 25 to slide in the first guide portion 121. When the slide bar 25 moves from one end of the traction portion 28 to the other end, the clamping action of the pen case assembly 3 is completed, and the slide plate 22 is continued to be pushed, and one end of the slide groove 26 abuts against the slide bar 25, and drives the slide bar 25 to slide in the second guide portion 122, and drives the fixed platform 23 to move on the slide rail 11, thereby moving the pen case assembly 3 to below the rotating device 4.

[0046] like Figure 8 As shown, after the pen case assembly 3 is charged, the pen case assembly 3 needs to be taken out, and the slide plate 22 is pulled in the direction away from the support member 14. The second guide portion 122 limits the movement of the slide bar 25 in a direction perpendicular to the moving direction of the slide plate 22, so that the clamping block 24 always clamps the pen case assembly 3. The slide bar 25 is located in the traction portion 28 and cannot continue to move. The slide bar 22 drives the fixed platform 23 to move on the slide rail 11. When the slide bar 25 moves to the connection position between the second guide portion 122 and the first guide portion 121, the slide plate 22 is continued to be pulled, and the slide bar 25 is guided by the traction portion 28 away from the pen case assembly 3 to release the pen case assembly 3.

[0047] Combination Figure 7 and Figure 8 The motion trajectory can explain that during the movement of the slide plate 22, the pen shell assembly 3 is clamped first and then moved, or the pen shell assembly 3 is first moved out from under the rotating device 4 and then the pen shell assembly 3 is released, so that during the replacement of the pen shell assembly 3 and the pushing and pulling of the pen shell assembly 3, the pen shell assembly 3 is always in a clamped state.

[0048] Because the second guide portion 122 is arranged along the width direction of the fixed platform 23, the movement of the slide bar 25 along the width direction of the fixed platform 23 is restricted and cannot move in the slide groove 26. Therefore, when the slide bar 25 slides on the second guide portion 122, it drives the fixed platform 23 to slide on the slide rail 11, thereby pulling out the fixed platform 23. When the slide bar 25 moves to the end of the second guide portion 122 away from the support member 14, the slide plate 22 continues to be pulled, and the slide bar 25 will move along the slide groove 26 and the first guide portion 121, realizing the movement of a pair of clamping blocks 24 away from the pen case assembly 3, thereby taking out the pen case assembly 3, completing the pulling out of the fixed platform 23 first, and then releasing the clamping of the pen case assembly 3, thereby ensuring the stability of the pen case assembly 3 during the movement.

[0049] Furthermore, the two ends of the second guide portion 122 also limit the sliding of the fixed platform 23. When the slide bar 25 slides in the second guide portion 122, it drives the fixed platform 23 closer to or away from the support member 14. When the slide bar 25 is located at the two ends of the second guide portion 122, the slide bar 25 is restricted from continuing to move, and the movement of the fixed platform 23 is also restricted. This not only reduces the space occupied, but also prevents the fixed platform 23 from colliding with other structures when moving, resulting in instability of the pen shell assembly 3.

[0050] The distance between the two ends of the traction part 28 along the length direction of the fixed platform 23 is less than the length of the first guide part 121, so that a pair of clamping blocks 24 can move an effective distance to complete the clamping action of the pen shell assembly 3. When the slide bar 25 slides on the traction part 28, it also slides on the first guide part 121 accordingly. When the slide bar 25 slides on the second guide part 122 and cannot move on the traction part 28, the fixed platform 23 moves together with the slide bar 25, thereby ensuring the continuity of the mechanical movement. Even if the slide bar 25 reaches the limit position on the slide groove 26, the entire structure can still continue to work by the movement of the fixed platform 23, thereby realizing the segmented movement of the clamping of the pen shell assembly 3 and the movement of the fixed platform 23, and the two do not affect each other. The segmented movement enables the clamping of the pen shell assembly 3 and the movement of the fixed platform 23 to be controlled separately, and can be performed in sequence, thereby improving the flexibility and efficiency of use and improving the stability of the pen shell.

[0051] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A torsion spring force storage fixture, characterized in that: include: A support base (1), the support base (1) comprising a base plate (13) and a support member (14); A clamping device (2) is mounted on the base plate (13), and a mounting hole (21) is provided on the clamping device (2); the clamping device (2) comprises a fixing platform (23), a pair of clamping blocks (24) mounted on the fixing platform (23), and a slide plate (22) for pulling the pair of clamping blocks (24) to move; a slide bar (25) is provided on the clamping block (24), and a slide groove (26) matching the slide bar (25) is provided on the slide plate (22); the slide groove (26) at least comprises a pulling portion (28) forming an angle with the moving direction of the slide plate (22); A rotating device (4) connected to the top of the rotating part (32) to drive the rotating part (32) to rotate and count; A lifting mechanism (5) is fixed on the support member (14), and a driving end (51) of the lifting mechanism (5) is fixed on the rotating device (4) to drive the rotating device (4) to perform lifting movement; The support seat (1) is provided with a slide rail (11) and a guide groove (12) along the width direction of the fixed platform (23); the fixed platform (23) is arranged on the slide rail (11) and slides along the direction of the slide rail (11); one end of the slide rod (25) extends downward into the guide groove (12); the guide groove (12) comprises a first guide portion (121) and a second guide portion (122); during the movement of the slide plate (22), the first guide portion (121) and the slide groove (26) jointly limit the slide rod (25), and only an opening and closing movement of a pair of clamping blocks (24) relative to the fixed platform (23) occurs; the second guide portion (122) and the slide groove (26) jointly limit the slide rod (25), and only a translation movement of the fixed platform (23) relative to the support seat (1) occurs.

2. A torsion spring force storage fixture according to claim 1, characterized in that: The second guide portion (122) is arranged along the width direction of the fixing platform (23), and the first guide portion (121) is perpendicular to the second guide portion (122).

3. A torsion spring force storage fixture according to claim 1, characterized in that: A pen case assembly (3) is installed in the installation hole (21); the rotating portion (32) is located at the top of the pen case assembly (3); the fixing platform (23) is fixed to the bottom plate (13) or slidably arranged on the bottom plate (13); when the slide plate (22) slides in the fixing platform (23), the pair of clamping blocks (24) move along the length direction of the fixing platform (23) to clamp or move away from the pen case assembly (3); and the moving direction of the pair of clamping blocks (24) is perpendicular to the moving direction of the slide plate (22).

4. A torsion spring force storage fixture according to claim 1, characterized in that: The slide groove (26) is arranged obliquely, the two traction parts (28) extend in the direction of the support member (14), and the distance between the two traction parts (28) gradually increases, and at most one extension groove (27) is respectively provided at both ends of the traction part (28), and the extension direction of the extension groove (27) is parallel to the moving direction of the slide plate (22).

5. The torsion spring force storage fixture according to claim 1, characterized in that: The distance between the two ends of the traction portion (28) along the length direction of the fixed platform (23) is smaller than the length of the first guide portion (121); when the slide bar (25) slides on the slide groove (26), it also slides on the second guide portion (122); when the slide bar (25) slides on the second guide portion (122) and cannot move on the slide groove (26), the fixed platform (23) moves together with the slide bar (25).

6. A torsion spring force storage fixture according to claim 3, characterized in that: The rotating device (4) comprises a fixed seat (41), a control rod (42), a support plate (43), a connecting rod (44) and a counter (45); the fixed seat (41) is slidably arranged on the bottom plate (13); a pair of the support plates (43) and the counter (45) are fixedly arranged on the fixed seat (41); one end of the control rod (42) passes through the pair of support plates (43) and is connected to the counter (45); the connecting rod (44) is located between the pair of support plates (43) and is arranged axially along the pen housing assembly (3); one end of the connecting rod (44) is connected to the top of the pen housing assembly (3); and the other end is connected to the outer wall surface of the control rod (42) via a bevel gear set.

7. A torsion spring force storage fixture according to claim 6, characterized in that: The inner wall surface at the top of the pen housing assembly (3) and the outer wall surface at the bottom of the connecting rod (44) are both provided with a plurality of protrusions, and when the connecting rod (44) rotates, the corresponding plurality of protrusions abut against each other, so that the pen housing assembly (3) rotates together with the connecting rod (44).

8. The torsion spring force storage fixture according to claim 6, characterized in that: The driving end (51) of the lifting mechanism (5) is arranged on the top of the fixing seat (41), and the fixing end (52) of the lifting mechanism (5) is fixed on the support seat (1). By changing the position of the driving end (51), the fixing seat (41) slides on the bottom plate (13), thereby adjusting the position of the connecting rod (44) and the pen housing assembly (3).

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