Torsion spring type externally driven shelf

Abstract

The utility model provides a torsion spring formula outer drive storage shelf, including the wall -hugging support, the wall -hugging support front is equipped with the pull -out support through the folding support arm articulates, wall -hugging support both ends are equipped with the fixed seat, the wall -hugging support is equipped with the reel inside, the reel outer wall is around the airing net that has rolled, the unfolding end of airing net is linked with pull -out support, the reel both ends are equipped with the first rotary support spare and the second rotary support spare with the fixed seat articulation of wall -hugging support both ends respectively, the reel is equipped with the torsion spring inside, the torsion spring one end is towards the first rotary support spare and is linked with the fixed seat in this direction, the torsion spring other end passes through the second rotary support spare or the third rotary support spare in the reel inside and reel fixed connection transmission torque, the first rotary support spare or the second rotary support spare is equipped with the ratchet wheel, the fixed seat or wall -hugging support is equipped with the pawl of ratchet wheel adaptation. The utility model has simple structure, can use one -way rotation to realize the arbitrary position stay of pull -out support, and can according to the need to have the advantage that is unlocked.

Description

Technical Field

[0001] This utility model relates to the field of pull-out shelves, specifically to a torsion spring type externally driven shelf. Background Technology

[0002] Currently, pull-out shelves use a hinged folding arm to connect the wall-mounted and pull-out supports. The wall-mounted support contains a pre-wound drum with a drying net wrapped around it. When the pull-out support is pulled out, the folding arm extends to its dead position, pulling the drying net along with it out of the drum. Because the drum itself has a pre-wound force, to prevent the pull-out support from retracting under the pull of the drying net, the characteristic of the folding arm extending to its dead position must be used to support the pull-out support. At the same time, the tension further increases the pre-wound force. If the user accidentally touches the folding arm, causing it to unlock at its dead position, the pull-out support will quickly retract under the pull of the drum and the drying net, colliding with the wall-mounted support and potentially causing injury to the user. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a torsion spring-type external drive shelf with a simple structure, which can use one-way anti-rotation to stop the pull-out bracket at any position and can be unlocked as needed.

[0004] To address the above problems, the following technical solution is provided: a torsion spring-type externally driven storage rack, including a wall-mounted bracket, a pull-out bracket hinged to the front of the wall-mounted bracket via a folding arm, fixed seats at both ends of the wall-mounted bracket, a drum inside the wall-mounted bracket, a drying net wound around the outer wall of the drum, the unfolded end of the drying net connected to the pull-out bracket, a first rotary support and a second rotary support hinged to the fixed seats at both ends of the drum, respectively, and a torsion spring inside the drum, one end of the torsion spring facing the first rotary support and connected to the fixed seat in that direction, the other end of the torsion spring being fixedly connected to the drum via the second rotary support or a third rotary support located inside the drum to transmit torque; the first rotary support and / or the second rotary support are provided with ratchet wheels, and the fixed seats or the wall-mounted bracket are provided with pawls adapted to the ratchet wheels.

[0005] In the above structure, the wall-mounted bracket and the pull-out bracket are hinged by two sets of folding arms. This allows the pull-out bracket to be pulled away from the wall-mounted bracket while simultaneously unfolding the folding arms. When the pull-out bracket unfolds, it pulls the drying net, causing the drum to rotate and simultaneously storing force for the torsion spring. When the pull-out bracket is extended to any position, releasing the handle prevents the drum from rotating in the opposite direction due to the matching of the ratchet and pawl, allowing it to stop at any position. When it is necessary to retract the pull-out bracket, simply press down on the pawl or move the pawl to separate it from the ratchet, causing the ratchet to rotate in the opposite direction under the drive of the torsion spring, thus retracting the drying net and the pull-out bracket. This effectively avoids the drawback of relying on the folding arms to be fully extended to the dead point to achieve positioning. The pre-coiling force of the torsion spring can be adjusted by installing the fixed base in front of the wall-mounted bracket and rotating it to store the force before installation, or by rotating the drum to adjust the pre-coiling force of the torsion spring.

[0006] The present invention is further configured such that: the inner wall of the drum is provided with at least one anti-rotation groove in the axial direction, and when there are multiple anti-rotation grooves, they are spaced apart along the circumferential direction of the drum; the first slewing support is provided with a first anti-rotation tooth that is adapted to be inserted into the anti-rotation groove in the axial direction of the drum; the second slewing support is provided with a second anti-rotation tooth that is adapted to be inserted into the anti-rotation groove in the axial direction of the drum; and the third slewing support is provided with a third anti-rotation tooth that is adapted to be inserted into the anti-rotation groove in the axial direction of the drum.

[0007] In the above structure, the anti-rotation groove can realize the axial insertion and installation of the first rotation support, the second rotation support, and the third rotation support, while also achieving circumferential fixation, effectively improving assembly efficiency and operational reliability.

[0008] The present invention is further configured such that the drum and the anti-rotation groove are formed by extrusion stretching of aluminum alloy.

[0009] The above structure can be cut into different lengths as needed, making it suitable for pull-out shelves of different specifications and models.

[0010] The present invention is further configured such that, when the torsion spring transmits torque through a fixed connection between the third rotary support and the drum, a one-way clutch damping torsion device is provided inside the drum between the third rotary support and the second rotary support. The one-way clutch damping torsion device includes a one-way clutch device and a damping device disposed near the second rotary support. The damping device includes a fixed member and a damping member that can rotate relative to the fixed member and generate damping force in the rotation direction. The one-way clutch device includes a fixed gear disk connected to the damping member and rotating with the damping member, and a movable gear disk that meshes with the fixed gear disk in one rotation direction and separates from the fixed gear disk in another rotation direction. The one-way clutch device also includes a rotating member connected to the movable gear disk, and the rotating member is fixedly connected to the drum. The fixed member is connected to a fixed seat on one side of the second rotary support.

[0011] In the above structure, the fixing component is connected to the fixing base as the force base. Since the drum needs damping intervention when the drying net is rolled up, and the damping needs to be eliminated when the drying net is unfolded to reduce the pulling force during unfolding, it is necessary to eliminate the damping force of one of the directions. Therefore, a one-way clutch device is set up. The power connection between the rotating component and the damping component is realized through the meshing and disengagement of the moving toothed disc and the fixed toothed disc. When the moving toothed disc and the fixed toothed disc are meshed, the rotation of the rotating component will cause the damping component to rotate together through the moving toothed disc and the fixed toothed disc, thereby generating a damping force between the damping component and the fixing component. When the moving toothed disc and the fixed toothed disc are disengaged, the moving toothed disc rotates with the rotating component but is separated from the fixed toothed disc. Therefore, the rotating component and the moving toothed disc form independent rotational degrees of freedom, and the damping force between the damping component and the fixing component cannot be transmitted to the rotating component. Thus, when the drum drives the drying net to roll up, it will not retract too quickly, which will cause the pull-out bracket to collide with the wall bracket, improving the overall user experience.

[0012] The present invention is further configured such that the end of the fixing member facing the second rotary support member is provided with a damping socket, and the fixing seat is provided with a damping shaft that passes through the second rotary support member and is inserted into the damping socket.

[0013] In the above structure, the fixed base and the damping shaft are integrally disposed and pass through the second slewing support to support the rotation of the second slewing support while also restricting the circumferential direction of the fixed base.

[0014] The present invention is further configured such that one end of the fixing member facing the second slewing support member is provided with a damping shaft passing through the second slewing support member, and the extended end of the damping shaft is inserted and connected to the fixing seat.

[0015] In the above structure, the damping shaft and the fixed base are separately arranged. The damping shaft is connected to the fixed base by plugging in to support the rotation of the second rotary support while restricting the circumferential direction of the fixed base.

[0016] The present invention is further configured such that the other end of the torsion spring is provided with a power storage torsion member, the power storage torsion member passing through the first rotary support member and being able to rotate relative to the drum while being integrally or separately disposed with the fixed seat.

[0017] In the above structure, the energy storage torsion member is used to support the rotation of the first slewing support member, and at the same time provides the torsion force point for the torsion spring.

[0018] The present invention is further configured such that the outer wall of the rotating component is provided with rotating teeth that are adapted to the anti-rotation groove.

[0019] In the above structure, the rotating component is connected to the drum via rotating teeth to provide damping force to the drum.

[0020] The present invention is further configured such that an isolation sleeve is fitted on the outer wall of the torsion spring.

[0021] In the above structure, the cylindricity of the torsion spring changes and it twists when it stores power. This twisting can cause the torsion spring to deform or reduce its torque. The isolation sleeve can effectively constrain the cylindricity of the torsion spring, prevent it from rubbing against the inner wall of the drum, and thus ensure the torque of the torsion spring. The isolation sleeve is preferably made of polytetrafluoroethylene, which uses its self-lubricating properties to reduce friction.

[0022] The present invention is further configured such that the ratchet is provided with a plurality of ratchet teeth evenly distributed along its circumferential direction, the ratchet teeth being located at the outer wall, inner wall or end face of the ratchet.

[0023] In the above structure, the ratchet teeth are preferably located on the outer wall of the ratchet.

[0024] The beneficial effects of this utility model are as follows: The wall-mounted bracket and the pull-out bracket are hinged by two sets of folding arms, allowing the pull-out bracket to be pulled away from the wall-mounted bracket while simultaneously unfolding the folding arms. When the pull-out bracket is unfolded, it pulls the drying net, causing the drum to rotate and simultaneously storing force for the torsion spring. When the pull-out bracket is extended to any position, it can be released, and the drum cannot rotate in the opposite direction due to the matching of the ratchet and pawl, thus achieving a stop at any position. When it is necessary to retract the pull-out bracket, simply press the pawl or move the pawl to separate it from the ratchet, causing the ratchet to rotate in the opposite direction under the drive of the torsion spring, retracting the drying net and the pull-out bracket. This effectively avoids the drawback of relying on the folding arms to be unfolded to the dead point to achieve positioning. The pre-coiling force of the torsion spring can be adjusted by installing the fixed base in front of the wall-mounted bracket and rotating it to store force before installation, or by rotating the drum to adjust the pre-coiling force of the torsion spring, thus achieving different pre-coiling force magnitudes. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the roll of this utility model.

[0027] Figure 3 This is a first exploded full-section three-dimensional structural diagram of the present invention.

[0028] Figure 4 This is a schematic diagram of the second explosive full-section three-dimensional structure of this utility model.

[0029] Figure 5 This is a three-dimensional structural diagram of the one-way clutch damping torsion device of this utility model.

[0030] Figure 6 This is a three-dimensional structural diagram of the damping device and the one-way clutch device of this utility model in their separated state.

[0031] Figure 7 This is a full-section three-dimensional structural diagram of the damping device and one-way clutch device of this utility model in their separated state after an explosion.

[0032] The labels in the diagram have the following meanings: 10-Wall-mounted bracket; 11-Folding support arm; 12-Draw-out bracket; 13-Fixed base; 131-Pawl; 132-Damping shaft; 133-Power storage torsion component; 20-Drum; 201-Anti-rotation groove; 22-First rotation support component; 221-First anti-rotation tooth; 23-Second rotation support component; 231-Second anti-rotation tooth; 24-Torsion spring; 25-Third rotation support component; 251-Third anti-rotation tooth; 26-Ratchet; 261-Ratchet tooth; 27-Isolation sleeve; 80-Damping device; 81-Fixed component; 811-Damping socket; 82-Damping component; 90-One-way clutch device; 91-Fixed gear disc; 92-Moving gear disc; 93-Rotating component; 931-Rotating tooth. Detailed Implementation

[0033] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0034] refer to Figures 1 to 7 ,like Figures 1 to 7 The illustrated torsion spring type externally driven storage rack includes a wall-mounted bracket 10. A pull-out bracket 12, hinged to the front of the wall-mounted bracket 10 via a folding support arm 11, is provided at both ends of the wall-mounted bracket 10. A roller 20 is located inside the wall-mounted bracket 10, and a drying net (existing technology, not shown in the figure) is wound around the outer wall of the roller 20. The unfolded end of the drying net (existing technology, not shown in the figure) is connected to the pull-out bracket 12. First, first... The drum 20 is equipped with a slewing support 22 and a second slewing support 23. A torsion spring 24 is provided inside the drum 20. One end of the torsion spring 24 faces the first slewing support 22 and is connected to the fixed seat 13 in that direction. The other end of the torsion spring 24 is fixedly connected to the drum 20 through the second slewing support 23 or a third slewing support 25 located inside the drum 20 to transmit torque. The first slewing support 22 and / or the second slewing support 23 are equipped with a ratchet 26. The fixed seat 13 or the wall bracket 10 is equipped with a pawl 131 that is adapted to the ratchet 26.

[0035] In the above structure, the wall-mounted bracket 10 and the pull-out bracket 12 are hinged by two sets of folding arms 11. This allows the pull-out bracket 12 to be pulled out away from the wall-mounted bracket 10 while simultaneously unfolding the folding arms 11. When the pull-out bracket 12 unfolds, it pulls the drying net (existing technology, not shown in the figure), causing the drum 20 to rotate and simultaneously storing force for the torsion spring 24. When the pull-out bracket 12 is extended to any position, it is released. The drum 20, under the adaptation of the ratchet 26 and the pawl 131, cannot rotate in the opposite direction, achieving a stop at any position. When it is necessary to retract the pull-out bracket... When the rack 12 is in use, simply press down on the pawl 131 or move the pawl 131 to separate it from the ratchet 26. This will cause the ratchet 26 to rotate in the opposite direction under the drive of the torsion spring 24, retracting the drying net (existing technology, not shown in the figure) and pulling out the rack 12. This effectively avoids the drawback of relying on the folding arm 11 to be unfolded to the dead point position to achieve positioning. The pre-coiling force of the torsion spring 24 can be adjusted by rotating the fixed base 13 before installing it on the wall-mounted rack 10 to store the force, or by rotating the drum 20 to adjust the pre-coiling force of the torsion spring 24, thereby achieving different pre-coiling force magnitudes.

[0036] In this embodiment, the inner wall of the drum 20 is provided with at least one anti-rotation groove 201 opened in its axial direction, and the anti-rotation groove 201 is spaced apart along the circumferential direction of the drum 20 when there are multiple grooves; the first slewing support member 22 is provided with a first anti-rotation tooth 221 that is adapted to be inserted into the anti-rotation groove 201 in the axial direction of the drum 20; the second slewing support member 23 is provided with a second anti-rotation tooth 231 that is adapted to be inserted into the anti-rotation groove 201 in the axial direction of the drum 20; and the third slewing support member 25 is provided with a third anti-rotation tooth 251 that is adapted to be inserted into the anti-rotation groove 201 in the axial direction of the drum 20.

[0037] In the above structure, the anti-rotation groove 201 can realize the axial insertion and installation of the first slewing support 22, the second slewing support 23, and the third slewing support 25, while also achieving circumferential fixation, effectively improving assembly efficiency and operational reliability.

[0038] In this embodiment, the roller 20 and the anti-rotation groove 201 are formed by extrusion stretching of aluminum alloy.

[0039] The above structure can be cut into different lengths as needed, making it suitable for pull-out shelves of different specifications and models.

[0040] In this embodiment, when the torsion spring 24 transmits torque through a fixed connection between the third rotary support 25 and the drum 20, a one-way clutch damping torsion device is provided inside the drum 20 between the third rotary support 25 and the second rotary support 23. The one-way clutch damping torsion device includes a one-way clutch device 90 and a damping device 80 disposed near the second rotary support 23. The damping device 80 includes a fixing member 81 and a damping member that can rotate relative to the fixing member 81 and generate a damping force in the rotation direction. 82; The one-way clutch device 90 includes a fixed gear disk 91 connected to the damping element 82 and rotating with the damping element 82, and a movable gear disk 92 that meshes with the fixed gear disk 91 in one rotation direction and is separated from the fixed gear disk 91 in another rotation direction. The one-way clutch device 90 also includes a rotating element 93 connected to the movable gear disk 92. The rotating element 93 is fixedly connected to the drum 20. The fixing element 81 is connected to the fixing seat 13 on one side of the second rotating support 23.

[0041] In the above structure, the fixing member 81 is connected to the fixing seat 13 as the force base. Since the drum 20 requires damping intervention when winding the drying net (existing technology, not shown in the figure), and the damping must be eliminated to reduce the pulling force when the drying net (existing technology, not shown in the figure) is unfolded, it is necessary to eliminate the damping force of one of the directions. Therefore, a one-way clutch device 90 is set up. The power connection between the rotating member 93 and the damping member 82 is realized through the engagement and disengagement of the moving gear plate 92 and the fixed gear plate 91. When the moving gear plate 92 and the fixed gear plate 91 are engaged, the rotation of the rotating member 93 will be transmitted through the moving gear plate 92. The fixed toothed disc 91 rotates together with the damping element 82, thereby generating a damping force between the damping element 82 and the fixed element 81. When the moving toothed disc 92 and the fixed toothed disc 91 separate, the moving toothed disc 92 rotates with the rotating element 93 but separates from the fixed toothed disc 91. Therefore, the rotating element 93 and the moving toothed disc 92 form independent rotational degrees of freedom, and the damping force between the damping element 82 and the fixed element 81 cannot be transmitted to the rotating element 93. This prevents the roller 20 from quickly retracting when it drives the drying net (existing technology, not shown in the figure) to collide with the pull-out bracket 12 and the wall-mounted bracket 10, thus improving the overall user experience.

[0042] In this embodiment, the fixing member 81 is provided with a damping socket 811 at one end facing the second rotary support member 23, and the fixing base 13 is provided with a damping shaft 132 that passes through the second rotary support member 23 and is inserted into the damping socket 811.

[0043] In the above structure, the fixed base 13 and the damping shaft 132 are integrally disposed through the second slewing support 23 to support the rotation of the second slewing support 23 and at the same time to restrict the circumferential direction of the fixed member 81.

[0044] In this embodiment, the end of the fixing member 81 facing the second slewing support member 23 is provided with a damping shaft 132 passing through the second slewing support member 23, and the extended end of the damping shaft 132 is inserted and connected to the fixing seat 13.

[0045] In the above structure, the damping shaft 132 and the fixed base 13 are separately arranged. The damping shaft 132 is connected to the fixed base 13 by plugging to support the rotation of the second rotary support 23 while restricting the circumferential direction of the fixed member 81 (not shown in the figure).

[0046] In this embodiment, the other end of the torsion spring 24 is provided with a power storage torsion member 133. The power storage torsion member 133 passes through the first rotary support member 22 and can rotate relative to the drum 20 while being integrally or separately set with the fixed seat 13.

[0047] In the above structure, the power storage torsion member 133 is used to support the rotation of the first rotary support member 22, and at the same time provides the torsion force point for the torsion spring 24.

[0048] In this embodiment, the outer wall of the rotating component 93 is provided with rotating teeth 931 that are adapted to the anti-rotation groove 201.

[0049] In the above structure, the rotating component 93 is connected to the drum 20 through the rotating tooth 931 to provide damping force to the drum 20.

[0050] In this embodiment, the outer wall of the torsion spring 24 is fitted with an isolation sleeve 27.

[0051] In the above structure, the cylindricity of the torsion spring 24 changes and it twists when it is charged. This twisting will cause the torsion spring 24 to deform or reduce the torque. The isolation sleeve 27 can effectively constrain the cylindricity of the torsion spring 24, prevent it from rubbing against the inner wall of the drum 20, and thus ensure the torque of the torsion spring 24. The isolation sleeve 27 is preferably made of polytetrafluoroethylene, which reduces friction by utilizing its self-lubricating properties.

[0052] In this embodiment, the ratchet 26 is provided with a plurality of ratchet teeth 261 evenly distributed along its circumferential direction, and the ratchet teeth 261 are located on the outer wall, inner wall or end face of the ratchet 26.

[0053] In the above structure, the ratchet 261 is preferably disposed on the outer wall of the ratchet 26.

[0054] The beneficial effects of this utility model are as follows: The wall-mounted bracket 10 and the pull-out bracket 12 are hinged together by two sets of folding arms 11, so that when the pull-out bracket 12 is pulled out, it can move away from the wall-mounted bracket 10 while the folding arms 11 unfold. When the pull-out bracket 12 unfolds, it pulls the drying net (existing technology, not shown in the figure), causing the drum 20 to rotate and storing force for the torsion spring 24. When the pull-out bracket 12 is stretched to any position, it is released. The drum 20 cannot rotate in the opposite direction due to the matching of the ratchet 26 and the pawl 131, achieving a stop at any position. When it is necessary to retract the pull-out bracket, the pull-out bracket can be used to retract the drying net. When pulling the bracket 12, simply press down on the pawl 131 or move the pawl 131 to separate it from the ratchet 26. This will cause the ratchet 26 to rotate in the opposite direction under the drive of the torsion spring 24, retracting the drying net (existing technology, not shown in the figure) and pulling out the bracket 12. This effectively avoids the drawback of relying on the folding support arm 11 to be unfolded to the dead point position to achieve positioning. The pre-coiling force of the torsion spring 24 can be adjusted by rotating the fixed base 13 before installing it on the wall-mounted bracket 10 to store the force, or by rotating the drum 20 to adjust the pre-coiling force of the torsion spring 24, thereby achieving different pre-coiling force magnitudes.

[0055] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A torsion spring type externally driven storage rack, comprising a wall-mounted bracket, a pull-out bracket hinged to the front of the wall-mounted bracket via a folding support arm, fixed seats at both ends of the wall-mounted bracket, a roller inside the wall-mounted bracket, a drying net wound around the outer wall of the roller, and the unfolded end of the drying net connected to the pull-out bracket, characterized in that: The drum has a first rotary support and a second rotary support hinged to the fixed seats at both ends of the wall-mounted bracket. A torsion spring is provided inside the drum. One end of the torsion spring faces the first rotary support and is connected to the fixed seat in that direction. The other end of the torsion spring is fixedly connected to the drum through the second rotary support or a third rotary support located inside the drum to transmit torque. The first rotary support and / or the second rotary support are provided with ratchet. The fixed seat or the wall-mounted bracket is provided with a pawl adapted to the ratchet.

2. The torsion spring type externally driven storage rack according to claim 1, characterized in that: The inner wall of the drum is provided with at least one anti-rotation groove in its axial direction, and when there are multiple anti-rotation grooves, they are spaced apart along the circumferential direction of the drum; the first slewing support is provided with a first anti-rotation tooth that is adapted to be inserted into the anti-rotation groove in the axial direction of the drum; the second slewing support is provided with a second anti-rotation tooth that is adapted to be inserted into the anti-rotation groove in the axial direction of the drum; and the third slewing support is provided with a third anti-rotation tooth that is adapted to be inserted into the anti-rotation groove in the axial direction of the drum.

3. The torsion spring type externally driven storage rack according to claim 2, characterized in that: The drum and anti-rotation groove are formed by extrusion and stretching of aluminum alloy.

4. The torsion spring type externally driven storage rack according to claim 1, characterized in that: When the torsion spring transmits torque through a fixed connection between the third slewing support and the drum, a one-way clutch damping torsion device is provided inside the drum between the third slewing support and the second slewing support. The one-way clutch damping torsion device includes a one-way clutch device and a damping device located near the second slewing support. The damping device includes a fixed member and a damping member that can rotate relative to the fixed member and generate damping force in the rotation direction. The one-way clutch device includes a fixed gear disk connected to the damping member and rotating with the damping member, and a moving gear disk that meshes with the fixed gear disk in one rotation direction and separates from the fixed gear disk in the other rotation direction. The one-way clutch device also includes a rotating member connected to the moving gear disk, and the rotating member is fixedly connected to the drum. The fixed member is connected to a fixed seat on one side of the second slewing support.

5. A torsion spring type externally driven storage rack according to claim 4, characterized in that: The fixing member has a damping socket at one end facing the second slewing support member, and the fixing base has a damping shaft that passes through the second slewing support member and is inserted into the damping socket.

6. A torsion spring type externally driven storage rack according to claim 4, characterized in that: The end of the fixing member facing the second slewing support member is provided with a damping shaft passing through the second slewing support member, and the extended end of the damping shaft is inserted and connected to the fixing seat.

7. A torsion spring type externally driven storage rack according to claim 1, characterized in that: The other end of the torsion spring is provided with a power storage torsion member. The power storage torsion member passes through the first rotary support member and can rotate relative to the drum while being integrated with or separate from the fixed seat.

8. A torsion spring type externally driven storage rack according to claim 4, characterized in that: The outer wall of the rotating component is provided with rotating teeth that are adapted to the anti-rotation groove.

9. A torsion spring type externally driven storage rack according to claim 1, characterized in that: The outer wall of the torsion spring is fitted with an isolation sleeve.

10. A torsion spring type externally driven storage rack according to claim 1, characterized in that: The ratchet is provided with a number of ratchet teeth evenly distributed along its circumference, and the ratchet teeth are located on the outer wall, inner wall or end face of the ratchet.

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