Rotation misuse prevention device and sheet

Abstract

To provide a mis-rotation rotation prevention device and a seat equipped with the mis-rotation prevention device.SOLUTION: There is provided a mis-rotation prevention device connected between a first member and a second member which rotate relatively. The mis-rotation prevention device includes a barrier part and a stopper. The barrier part is fixed to the first member, and the stopper is provided in the second member and is pivotally moved between a lock position and a release position. When the barrier part rotates to the position of the stopper along a rotation direction in the lock position, the stopper engages with the barrier part and prevents the first member from rotating in the rotation direction with respect to the second member.SELECTED DRAWING: Figure 5A

Description

Technical Field

[0001] The present application relates to a rotation misuse prevention device and a seat provided with the rotation misuse prevention device.

Background Art

[0002] A seat is a common device that can accommodate infants and young children of different ages. Generally, when the seat is in the forward-facing position, it is used by older infants, and when the seat is in the rearward-facing position, it can accommodate younger infants. In some application scenarios, the seat needs to be rotatable to change the orientation of the occupant. However, after the seat is rotated, there is a possibility that a caregiver may misuse the device by placing a younger infant in the forward-facing seat. Such an application scenario is an in-vehicle child seat, where the seat body is rotatable relative to a base fixed to a vehicle body, and the backrest of the seat can be switched between a rearward-facing state and a forward-facing state. Therefore, there is a need to provide a rotation misuse prevention device that further reminds caregivers to pay attention to correct and safe use when the seat is adjusted to the forward-facing position, and warns against leaving younger infants in a forward-facing seat mode.

Summary of the Invention

Problem to be Solved by the Invention

[0003] For safety reasons, for a rotatable seat, the rotation misuse prevention device needs to lock the seat and alert the user to avoid undesirable use of the seat. In order to improve the user experience, the rotation misuse prevention device needs to be characterized by stable and reliable performance and easy operation, and its internal structure needs to be hidden to facilitate a clean appearance of the entire seat.

Means for Solving the Problem

[0004] This application provides a rotation misuse prevention device connected between a first member and a second member that rotate relative to each other, the rotation misuse prevention device comprising a barrier portion, a mounting member, a stopper, and a push assembly, wherein the barrier portion is fixed to the first member, the mounting member is fixed to the second member and has a bottom wall, and a first side wall and a second side wall extending from the bottom wall and facing each other, the bottom wall, the first side wall and the second side wall forming a housing space, and the stopper is pivotably mounted between the first side wall and the second side wall via a rotation axis and at least a portion of it is housed in the housing space and locked position The push assembly is pivotable between a locked position and a released position, and in the locked position, the stopper engages with the barrier portion to prevent the first member from rotating relative to the second member along the rotational direction, and in the released position, the engagement between the stopper and the barrier portion is released to allow the first member to rotate relative to the second member along the rotational direction, the push assembly is provided on the bottom wall of the mounting member and at least a portion of it is housed in the housing space, and the push assembly pivots the stopper from the locked position to the released position by sliding on the bottom wall by an external force.

[0005] In one embodiment, the rotation misuse prevention device further includes a torsion spring, which is fitted onto the rotating shaft, with one end fixed to the stopper and the other end fixed to the mounting member, thereby biasing the stopper to the locked position.

[0006] In one embodiment, the push assembly comprises a drive block, a push button, and a connecting member, wherein the drive block is slidably mounted in the housing space and located on the bottom wall of the mounting member, the push button is located outside the housing space of the mounting member, and the connecting member fixably connects the drive block and the push button.

[0007] In one embodiment, at least one of the first and second side walls of the mounting member has an elongated groove provided along the sliding direction of the drive block, and the connecting member penetrates the elongated groove to fixally connect the drive block and the push button, and can slide along the elongated groove.

[0008] In one embodiment, the drive block has a first end and a second end along its sliding direction, and has a projection between the first end and the second end, and in the height direction perpendicular to the sliding direction, the first end is protrusion The second end has a gradually increasing height, which is inclined and transitions, and the second end has a substantially uniform height that is lower than the protrusion. The connecting member is in the shape of a bent rod, with one end inserted into the protrusion along a direction perpendicular to the sliding direction and the height direction, and the other end fixed to the push button.

[0009] In one embodiment, the stopper comprises a top surface and a bottom surface, the top surface facing away from the bottom wall of the mounting member and substantially parallel to the bottom wall, and the bottom surface facing the bottom wall of the mounting member and substantially parallel to the bottom wall, wherein the bottom surface of the stopper is provided with feet protruding outward, and the pushing assembly pushes the feet to pivot the stopper from the locked position to the released position.

[0010] In one embodiment, the stopper comprises a top surface, a bottom surface, and two side surfaces, the top surface facing away from the bottom wall of the mounting member and substantially parallel to the bottom wall, the bottom surface facing the bottom wall of the mounting member and substantially parallel to the bottom wall, a foot protruding outward is provided at one end of the bottom surface of the stopper, and both side surfaces are located between the top surface and the bottom surface, where, in the released position, the drive block is located at one end of the elongated groove, the foot is located at the second end of the drive block, the top surface of the drive block is provided facing the barrier portion, and in the locked position, the drive block is located at the other end of the elongated groove, the foot is located at the first end of the drive block, and one of the two side surfaces of the stopper engages with the barrier portion.

[0011] The present application provides a sheet comprising a base, a pressing member, a sheet body, and the above-described rotation misuse prevention device, wherein the base has an annular track, the annular track restricts the sliding direction, the pressing member is connected to the base and slidably inserted into the annular track, the sheet body is fixed to the pressing member and can rotate with the pressing member relative to the base, the rotation misuse prevention device is mounted between the base and the pressing member, the first member is the pressing member, and the second member is the base.

[0012] In one embodiment, the pressing member comprises a pressing member body that can slide along the annular track, and the barrier portion is provided on the pressing member body and extends radially outward from the annular track.

[0013] In one embodiment, there are two rotation misuse prevention devices, each located on either side of the base, with an interlocking member provided between the two rotation misuse prevention devices, so that when the push assembly of one of the two rotation misuse prevention devices is operated, the push assembly of the other of the two rotation misuse prevention devices is operated synchronously.

[0014] The embodiments of this application will be described in detail below with reference to the drawings. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view of the sheet of the present invention, in which the sheet body is rotated to a forward-facing position. [Figure 2] This is a perspective view of the sheet of the present invention from another angle, in which the sheet body is rotated to a rearward position. [Figure 3] This is a perspective view of the sheet of the present invention from another angle, where the base below the base is omitted and the sheet body is rotated to a rearward position. [Figure 4]This is a perspective view of the sheet of the present invention from another angle, where the base below the base is omitted, and the sheet body is rotated to a central position between the forward-facing and rearward-facing positions. [Figure 5A] This is a perspective view of the base, pressing member, mounting member, stopper, and push button of the sheet of the present invention, in which the pressing member is rotated to a different position from the stopper. [Figure 5B] This is a perspective view from another angle of the base, pressing member, mounting member, stopper, and push button of the sheet of the present application, in which the pressing member is rotated to a different position from the stopper. [Figure 6] This is a perspective view of the base, pressing member, mounting member, stopper, and push button of the sheet of the present invention, in which the pressing member is rotated to the position of the stopper. [Figure 7] This is a perspective view of the pressing member, mounting member, stopper, and push button of the sheet of the present invention, in which the pressing member is rotated to a different position from the stopper. [Figure 8] This is a perspective view of the pressing member, mounting member, stopper, and push button of the sheet of the present invention, in which the pressing member is rotated to the position of the stopper. [Figure 9A] This is a perspective view of the sheet-type pressing member, mounting member, stopper, and push button of the present invention, where the push button is in a disassembled state. [Figure 9B] This is a partial enlarged view of Figure 9A. [Figure 10A] This is a perspective view of the pressing member, mounting member, stopper, and push button of the sheet of the present invention, where the mounting member, stopper, push button, and other components on one side are in a disassembled state. [Figure 10B] This is a magnified view of a portion of Figure 10A. [Figure 11] This is a perspective view of the pressing member, mounting member, stopper, and push button of the sheet of the present invention from a certain angle, where the mounting member, stopper, and push button on one side are shown in a cross-sectional view, and here the stopper does not obstruct the pressing member. [Figure 12]It is a perspective view from another angle of the pressing member, mounting member, stopper and push button of the seat of the present application, wherein members such as the mounting member, stopper and push button on one side are shown in a cross-sectional view, and the pressing member is blocked by the stopper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In this specification, the present invention is described and explained with reference to specific embodiments, but the present invention should not be limited to the details shown. Rather, various modifications may be made to these details without departing from the invention and within the scope of equivalent schemes of the claims.

[0017] Direction descriptions such as "front", "rear", "upper" and "lower" in this specification are for the convenience of understanding, the present invention is not limited to these directions, and can be adjusted according to actual situations.

[0018] First, referring to Fig. 1, Fig. 1 is a perspective view showing a seat 100 according to the present application, wherein the seat body 110 is in a state of rotating forward. As shown in the figure, the seat 100 includes a seat body 110 and a base 120. The seat body 110 is rotatably mounted on the base 120 to be rotatable between a forward-facing position (Fig. 1) and a rearward-facing position (Fig. 2). The base 120 is mounted on a pedestal located below the base 120, and in one embodiment, the base 120 can slide back and forth relative to the pedestal, providing more positions for the base 120. The pedestal is used for fixing the entire seat 100 to a carriage such as an automobile.

[0019] Next, referring to Figure 2, which is a perspective view of the seat 100 according to the present invention from another angle, the seat body 110 is rotated to a rearward-facing position. As shown in the figure, the seat body 110 rotates 180 degrees relative to the base 120 from the forward-facing position shown in Figure 1 to reach a rearward-facing position where the back of the seat faces forward, and is used for young infants. In this invention, this orientation is used for infants aged 0 to 4 years. Thus, for example, if a moving car suddenly decelerates, the seat 100 in the rearward-facing position can mitigate the impact force on the child in the seat 100 and protect the child. Furthermore, if the rotation axis of the seat body 110 has a certain inclination angle, the seat body 110 in the rearward-facing position can provide a certain elevation angle, which can provide a more comfortable ride.

[0020] Next, referring to Figure 3, which is a perspective view of the sheet 100 according to the present invention from another angle, in which the lower base of the base 120 is omitted and the sheet body 110 is rotated to a rearward position. From Figure 3, the positional relationship between the sheet body 110 and the base 120 is more clearly visible. From Figure 3, the push button 160 of the rotation misuse prevention device can also be seen. The push button 160 is located on the outside of the base 120, and this position is configured so that the user can operate the push button 160 with one hand while rotating the sheet body 110 with the other hand. The user can operate the rotation misuse prevention device with the push button 160, thereby locking and unlocking the relative rotation between the sheet body 110 and the base 120.

[0021] In this application, the push button 160, the drive block 170, and the connecting member 165 can be referred to as a push assembly.

[0022] Referring to Figure 4, which is a perspective view of the sheet 100 of the present application from another angle, where the base below the base 120 is omitted and the sheet body 110 is rotated to an intermediate position between the forward-facing and rearward-facing positions. At this time, the sheet body 110 is approximately lateral to the base 120. The rotation misuse prevention device of the present application can be designed to lock the sheet 100 in any rotation position. In this embodiment, a rotation misuse prevention device capable of locking the sheet body 110 in the forward-facing and rearward-facing positions is shown, but it should be understood that the present application is not limited to these two lock positions.

[0023] Next, refer to Figures 5A and 5B. Figures 5A and 5B are perspective views showing two different angles of the base 120, pressing member 130, mounting member 140, stopper 150, and push button 160 of the sheet 100 according to the present application, where the pressing member 130 is rotated to a different position from the stopper 150.

[0024] As shown in the illustration, the base 120 has an annular track on the side facing the sheet body 110, and the pressing member 130 can slide along this annular track, is fixedly connected to the sheet body 110, and is rotatable relative to the base 120 in accordance with the sheet body 110. In the illustrated embodiment, two pressing members 130 are uniformly provided along the circumference of the annular track, and each pressing member 130 has an arc portion extending substantially along the annular track and hook portions at both ends of the arc portion, the arc portion being inserted into the annular track so that the pressing member 130 can slide along the annular track, and the hook portions extending toward the sheet body 110 and joined to the bottom of the sheet body 110. Note that the shape and number of pressing members 130 in this embodiment are merely illustrative.

[0025] In other embodiments, the pressing members 130 can be set to be one or more, and can be uniformly or non-uniformly distributed on the circumference of the annular track. In other embodiments, the pressing members 130 may have different shapes, as long as they can be fixedly connected to the sheet body 110.

[0026] The mounting member 140 is fixedly attached to the base 120 to provide a structure for mounting components such as the stopper 150. The stopper 150 is pivotally connected to the mounting member 140, and this axis of rotation is substantially aligned with the radial direction of the annular track. In this way, the pivoting of the stopper 150 allows one end of the stopper 150 to be lifted toward the seat body 110, thereby interfering with the pressing member 130 (specifically, the barrier portion 131 in the annular part of the pressing member), and preventing the pressing member 130 from sliding along the annular track when it rotates forward from the rearward position to the position of the stopper 150 (Figure 6). This will be explained in detail later.

[0027] The push button 160 is mounted on the side wall of the base 120, with part of it exposed to the outside of the seat 100 through an opening in the side wall, thereby facilitating its operation by the user, while the other part is connected to a drive block 170 (described later) of the mounting member 140, which drives the pivot of the stopper 150 via the drive block 170.

[0028] In the embodiment shown in the figure, two sets of assemblies are provided uniformly spaced along the circumference of an annular track, and each assembly includes a mounting member 140, a stopper 150, a push button 160, and a drive block 170. Furthermore, a synchronous interlocking device exists between the two sets of assemblies, which either synchronously block or prevent the stoppers 150 in the two sets of assemblies from synchronously blocking the corresponding pressing members 130. This allows the user to control both sets of assemblies simultaneously by operating the push button 160 on one set of assemblies. In the embodiment shown in the figure, the synchronous interlocking device is an annular interlocking member 190 connected to the two push buttons 160, and the interlocking member 190 extends over a range of approximately 180 degrees along the annular track, but is not limited to this angle. Other types of synchronous interlocking devices may also be used. In addition, a push button 160 may be provided on only one set to drive all assemblies by user operation and synchronous interlocking between each set.

[0029] Next, referring to Figure 6, which is a perspective view of the base 120, pressing member 130, mounting member 140, stopper 150, and push button 160 of the sheet 100 according to the present application, in which the pressing member 130 is rotated to the position of the stopper 150. In the position shown in Figure 6, the user can operate the push button 160 to move the stopper 150, thereby preventing or allowing the pressing member 130 to slide along its annular trajectory, and further preventing or allowing the sheet body 110 to rotate relative to the base 120.

[0030] Next, referring to Figures 7 and 8, Figure 7 is a perspective view of the pressing member 130, mounting member 140, stopper 150, and push button 160 of the sheet 100 according to the present application, in which the pressing member 130 is rotated to a different position from the stopper 150. Figure 8 is a perspective view of the pressing member 130, mounting member 140, stopper 150, and push button 160 of the sheet 100 according to the present application, in which the pressing member 130 is rotated to the position of the stopper 150. Figures 7 and 8 make the positional relationship of the pressing member 130, mounting member 140, stopper 150, and push button 160 of the present application clearer.

[0031] Next, referring to Figures 9A and 9B, Figure 9A is a perspective view of the pressing member 130, mounting member 140, stopper 150, and push button 160 of the sheet 100 according to the present application, where one push button 160 is in a disassembled state, and Figure 9B is a partial enlargement of Figure 9A.

[0032] As shown in the figure, the push button 160 comprises a push button plate 161 that is arc-shaped and extends along the inner wall of the base 120, a push button operating portion 162 that protrudes from one side of the push button plate 161, and a push button connecting portion 163 that extends from the push button plate 161 in the direction opposite to the push button operating portion 162. The push button connecting portion 163 is provided with a plurality of insertion holes that extend in a direction substantially perpendicular to the base 120. During use, the push button plate 161 is mounted inside the side wall of the base 120 so that the push button 160 can slide along the side wall of the base 120 within a certain range. The push button operating portion 162 extends from an opening in the side wall of the base 120 so that the user can operate the push button 160. A connecting member 165 connected to the drive block 170 and an interlocking member 190 connected to another push button 160 are inserted into the insertion hole of the push button connection part 163, and the connecting member 165 and the interlocking member 190 are moved together with the push button 160.

[0033] The connecting member 165 is a folding bar member having multiple segments extending from it, comprising: a first segment extending substantially perpendicular to the base 120 and inserted into the push button 160; a second segment extending circumferentially to the base 120 and connecting the first segment and the third segment; and a third segment extending radially to the base 120 and inserted into the drive block 170 through elongated grooves 142 on the first side wall 141a and the second side wall 141b of the mounting member 140, thereby moving the drive block 170 and the push button 160 together.

[0034] Next, refer to Figures 10A and 10B. Figure 10A is a perspective view of the pressing member 130, mounting member 140, stopper 150, and push button 160 of the sheet 100 according to the present application, where the mounting member 140, stopper 150, push button 160, and other components on one side are in a disassembled state. Figure 10B is a partially enlarged view of Figure 10A.

[0035] As shown in the figure, the mounting member 140 is substantially box-shaped, having a bottom wall and first side walls 141a and second side walls 141b rising from both sides of the bottom wall, and mounting features such as bolt holes are provided at both ends for fixing to the base 120.Therefore, the mounting member 140 forms a housing space with one side open so that at least a part of it is housed in the drive block 170 and the stopper 150.The first side wall 141a and the second side wall 141b of the mounting member 140 are each provided with pivot holes so that the stopper 150 can be pivotally assembled to the mounting member 140.

[0036] The drive block 170 is slidably mounted in the housing space of the mounting member 140 and slides circumferentially along the bottom wall of the mounting member 140 on the base 120. The drive block 170 has a first end 171 and a second end 172 along its sliding direction, and a projection 173 between the first end 171 and the second end 172. In the height direction perpendicular to the sliding direction, the first end 171 has a gradually increasing height that slopes inclined toward the projection 173, and the second end 172 has a substantially uniform height that is lower than the projection 173. The drive block 170 is also provided with a drive block insertion hole for inserting a connecting member 165 into the drive block 170.

[0037] The stopper 150 has a top surface 151 facing away from the bottom wall of the mounting member 140 and substantially parallel to the bottom wall, and a bottom surface 152 facing the bottom wall of the mounting member 140 and substantially parallel to the bottom wall. The bottom surface 152 of the stopper 150 is provided with outwardly projecting feet 153, and the push assembly pivots the stopper 150 from the locked position to the released position by pushing the feet 153. The stopper 150 also has a pivot hole along the radial direction of the base 120, and a rotation axis (not shown) passes through the pivot holes in the first side wall 141a and the second side wall 141b of the mounting member 140 and the pivot hole of the stopper 150, so that the stopper 150 is pivotably assembled to the mounting member 140.

[0038] A torsion spring 180 is also provided between the stopper 150 and the mounting member 140. The torsion spring 180 is fitted around the pivot hole of the stopper 150, with one end in contact with the stopper 150 and the other end in contact with the mounting member 140, thereby biasing the stopper 150 to the locked position (i.e., the position that prevents the movement of the pressing member 130).

[0039] In this embodiment, the drive block 170, push button 160, and connecting member 165 are assembled to form a push assembly, thereby facilitating the assembly of the entire rotation misuse prevention device. In other embodiments, the drive block 170, push button 160, and connecting member 165 may be formed as a single integrated component.

[0040] Next, the operation of the rotation misuse prevention device of the present invention will be described with reference to Figures 11 and 12. Figure 11 is a perspective view from one angle of the pressing member 130, mounting member 140, stopper 150, and push button 160 of the sheet 100 according to the present invention, where the mounting member 140, stopper 150, push button 160 and other components on one side are shown in a cross-sectional view, and the stopper 150 does not block the pressing member 130. Figure 12 is a perspective view from another angle of the pressing member 130, mounting member 140, stopper 150, and push button 160 of the sheet 100 according to the present invention, where the mounting member 140, stopper 150, push button 160 and other components on one side are shown in a cross-sectional view, and the pressing member 130 is blocked by the stopper 150.

[0041] In the release position shown in Figure 11, the drive block 170 slides to the left in the figure within the housing space of the mounting member 140 such that the first end 171 of the drive block 170 abuts against the end wall of the mounting member 140. The foot 153 of the stopper 150 abuts against a uniform height segment (or flat portion) between the second end 172 and the projection 173 of the drive block 170 such that the top surface 151 of the stopper 150 is substantially parallel to the bottom wall of the mounting member 140. In this way, the stopper 150 does not prevent the pressing member 130 from sliding along the annular track.

[0042] When the user needs to lock the pressing member 130 (and the sheet body 110), they operate the push button 160 and move it to the right in the figure, causing the drive block 170 to slide and contact the right end wall of the mounting member 140. In this process, the foot portion 153 of the stopper 150 passes over the projection 173 by going through the slope between the flat portion of the second end 172 of the drive block 170 and the projection 173, and then slides down along the slope between the first end 171 of the drive block 170 and the projection 173 until it contacts the bottom wall of the mounting member 140. At this time, the stopper 150 rotates relative to the mounting member 140 such that the top surface 151 of the stopper 150 is inclined with respect to the bottom wall of the mounting member 140. As a result, one end of the stopper 150 is lifted away from the mounting member 140 and interferes with the barrier portion 131 of the pressing member 130, thus preventing the rotation of the pressing member 130 (and the sheet body 110).

[0043] In the embodiment shown in the figure, the stopper 150 is shown to prevent the rotation of the pressing member 130 in one direction. In other embodiments, it should be understood that the stopper 150 can be configured to prevent the rotation of the pressing member 130 in both directions. For example, one end of the stopper 150 may have a notch corresponding to the barrier portion 131 of the pressing member 130, thereby configuring it to lock the barrier portion 131 in both directions.

[0044] A person skilled in the art will readily come up with other embodiments of the Application after considering the specification and practicing the invention disclosed herein. This application aims to cover any variations, uses, or adaptive changes of the Application, including common or conventional technical means known in the Art but not disclosed herein, in accordance with the general principles of the Application. The specification and examples are merely illustrative, and the true scope and spirit of the Application are indicated by the claims.

[0045] This specification is described with reference to an exemplary list of examples, but the terms used are illustrative and not restrictive. Since this application can be specifically implemented in various forms without departing from the spirit and substance of this application, the above-described examples are not limited to the details described above and should be interpreted most broadly within the scope defined in the claims; therefore, all variations that fall within the claims or equivalent scope should be considered to fall within the claims. [Explanation of Symbols]

[0046] 100 sheets 110 Seat Body 120 base 130 Pressing member 131 Barrier section 140 Mounting components 141a First side wall 141b Second side wall 142 Long groove 150 Stopper 151 Top surface 152 Base 153 Foot 160 push buttons 161 Push Button Plate 162 Push button operation section 163 Push button connector 165 Connecting Member 170 Drive Block 171 The first edge 172 The second end 173 Protrusion 180 Torsion spring 190 Interlocking member

Claims

1. A rotation misuse prevention device connected between a first member and a second member that rotate relative to each other, The aforementioned rotation misuse prevention device comprises a barrier section and a stopper. The barrier portion is fixed to the first member, The stopper is provided on the second member and is pivotable between a locked position and an unlocked position. When the stopper is in the locked position and the barrier rotates to the stopper's position along the rotational direction, the stopper engages with the barrier to prevent the first member from rotating relative to the second member in the rotational direction, and allows the first member to rotate relative to the second member in the opposite direction to the rotational direction. A device for preventing misuse of rotation, characterized by the following features.

2. A rotation misuse prevention device connected between a first member and a second member that rotate relative to each other, The aforementioned rotation misuse prevention device comprises a barrier section and a stopper. The barrier portion is fixed to the first member, The stopper is provided on the second member and is pivotable between a locked position and an unlocked position. When the barrier portion rotates to the position of the stopper along the rotational direction while the stopper is in the locked position, the stopper engages with the barrier portion and prevents the first member from rotating in the rotational direction relative to the second member. When the barrier portion rotates to the position of the stopper along a direction opposite to the direction of rotation while the stopper is in the locked position, the barrier portion pushes the stopper and pivots it to the released position. A device for preventing misuse of rotation, characterized by the following features.

3. When the stopper is in the locked position, the stopper is located in the rotation path of the barrier portion, The rotation misuse prevention device according to claim 1 or 2.

4. The mounting member is further fixed to the second member, The stopper is provided on the mounting member, The rotation misuse prevention device according to claim 1 or 2.

5. The mounting member has a bottom wall and a first side wall and a second side wall extending from the bottom wall and facing each other, and the bottom wall, the first side wall and the second side wall form a housing space. The stopper is pivotably mounted between the first side wall and the second side wall via a rotating shaft, and at least a portion of it is housed in the housing space and pivots between the locked position and the released position. The rotation misuse prevention device according to feature 4.

6. The aforementioned rotation misuse prevention device further comprises a push assembly, The push assembly is provided on the bottom wall of the mounting member, and at least a portion of it is housed in the housing space, and the push assembly is moved along the bottom wall by an external force. By sliding, the stopper is pivoted from the locked position to the released position. The rotation misuse prevention device according to feature 5.

7. The aforementioned rotation misuse prevention device further comprises a torsion spring, The torsion spring is fitted onto the rotating shaft, with one end fixed to the stopper and the other end fixed to the mounting member, thereby biasing the stopper to the locked position. The rotation misuse prevention device according to feature 5.

8. The push assembly comprises a drive block, a push button, and a connecting member. The drive block is slidably provided in the housing space and is located on the bottom wall of the mounting member, The push button is located outside the housing space of the mounting member. The connecting member securely connects the drive block and the push button. The rotation misuse prevention device according to feature 6.

9. At least one of the first side wall and the second side wall of the mounting member has an elongated groove provided along the sliding direction of the drive block, The connecting member penetrates the elongated groove to fix and connect the drive block and the push button, and can slide along the elongated groove. The rotation misuse prevention device according to feature 8.

10. The drive block has a first end and a second end along the sliding direction, and has a protrusion between the first end and the second end. In the height direction perpendicular to the sliding direction, the first end has a gradually increasing height that slopes inward towards the protrusion, and the second end has a substantially uniform height that is lower than the protrusion. The connecting member is shaped like a bent rod, with one end inserted into the protruding portion along a direction perpendicular to the sliding direction and the height direction, and the other end fixed to the push button. The rotation misuse prevention device according to feature 9.

11. The stopper comprises a top surface and a bottom surface. The top surface faces away from the bottom wall of the mounting member and is substantially parallel to the bottom wall. The bottom surface is opposite the bottom wall of the mounting member and is substantially parallel to the bottom wall. The bottom surface of the stopper is provided with a foot that protrudes outward, and the pushing assembly pushes the foot to pivot the stopper from the locked position to the released position. The rotation misuse prevention device according to feature 6.

12. The stopper comprises a top surface, a bottom surface, and both sides. The top surface faces away from the bottom wall of the mounting member and is substantially parallel to the bottom wall. The bottom surface is opposite the bottom wall of the mounting member and is substantially parallel to the bottom wall, and a foot portion protruding outward is provided at one end of the bottom surface of the stopper. The aforementioned two sides are located between the top surface and the bottom surface, With the stopper in the released position, the drive block is located at one end of the elongated groove, the foot is located at the second end of the drive block, and the top surface of the drive block faces the barrier portion. With the stopper in the locked position, the drive block is located at the other end of the elongated groove, the foot is located at the first end of the drive block, and one of the two sides of the stopper engages with the barrier portion. The rotation misuse prevention device according to claim 10.

13. A sheet comprising a base, a pressing member, a sheet body, and a rotation misuse prevention device according to any one of claims 1 to 12, The base is provided with an annular track, and the annular track restricts the sliding direction. The pressing member is connected to the base and slidably inserted into the annular track, The sheet body is fixed to the pressing member and can rotate together with the pressing member relative to the base. The rotation misuse prevention device is installed between the base and the pressing member, the first member being the pressing member and the second member being the base. A sheet characterized by the following features.

14. The pressing member comprises a pressing member body that can slide along the annular track, and the barrier portion is provided on the pressing member body and extends radially outward from the annular track. The sheet according to feature 13.

15. The rotation misuse prevention devices are two in number, each located on either side of the base, with a toggle link between the two rotation misuse prevention devices, so that when the push assembly of one of the two rotation misuse prevention devices is operated, the push assembly of the other rotation misuse prevention device is operated synchronously. The sheet according to claim 13 or 14, which is dependent on feature 6.

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