Seat capable of switching moving modes

Abstract

The utility model relates to the technical field of furniture, and particularly discloses a seat with switchable moving modes, which comprises a seat body and switchable moving components respectively arranged on the outer sides of legs and feet of the seat body, each switchable moving component comprises a bending connecting piece, a screw rod, a connecting frame and a pulley, the bending connecting piece is fixed with the legs and feet of the seat body through a fastener, and the screw rod is connected with the connecting frame. A lead screw vertically penetrates through the upper portion of the bending connecting piece, the two ends of the lead screw extend out of the bending connecting piece, the lower end of the lead screw extends out and penetrates through the connecting frame to be provided with a first limiting nut in a screwed mode, the upper end of the lead screw extends out and is provided with a second limiting nut in a screwed mode, and the outer wall of the lead screw is sleeved with a pressure spring which is located between the bending connecting piece and the connecting frame. When the chair is placed, the bottoms of the pulleys protrude out of legs and feet of the chair body, and when the chair is pressed down under stress, the bottoms of the pulleys are flush with the bottoms of the legs and feet of the chair body. The folding and unfolding of the pulley can be realized by switching two states of the moving component, and the problem that the seat is difficult to move is solved.

Description

Technical Field

[0001] This utility model belongs to the field of furniture technology, specifically a chair with switchable movement modes. Background Technology

[0002] Chairs are an essential piece of furniture in people's daily lives. Especially in some public places, it is sometimes necessary to move a lot of chairs back and forth. This not only makes noise during the moving process, but also causes the chair legs to rub against the floor surface, which can easily cause wear and tear on the chair legs and damage to the floor, resulting in property loss.

[0003] Some chairs are old-fashioned, large, and heavy. If you rely solely on manpower to move them, it will not only be inefficient but also a waste of human resources.

[0004] When elderly people use existing chairs, sitting is not affected, but moving around is extremely difficult. In addition, due to their age and limited physical strength, moving around is even more difficult, and in severe cases, it can even cause illness. Using a chair with wheels can lead to the risk of the chair rolling while sitting, and each wheel must be braked before sitting, which is time-consuming and laborious. If the wheels are not braked, the chair may easily push and cause the user to fall. Therefore, there is an urgent need to design a chair with a switchable movement mode to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a chair with a switchable movement mode, which solves the problems mentioned above, such as the difficulty in moving ordinary chairs, the risk of friction between the chair legs and the floor caused by dragging, the inability of elderly people to move the chairs, and the need to use brakes when using wheeled chairs, which may cause the chair to slide and the user to fall if the brakes are not used.

[0006] To solve the above-mentioned technical problems, this utility model provides a chair with a switchable movement mode, including a chair body and switchable movement components respectively disposed on the outer sides of the legs of the chair body. The switchable movement components include a bending connector, a lead screw, a connecting frame, and a pulley. The bending connector is fixed to the legs of the chair body by fasteners. The lead screw is vertically inserted through the upper part of the bending connector, and both ends of the lead screw extend out of the bending connector. The lower end of the lead screw extends through the connecting frame and is screwed with a first limiting nut, and the upper end extends out and is screwed with a second limiting nut. A pressure spring is sleeved on the outer wall of the lead screw, and the pressure spring is located between the bending connector and the connecting frame. The pulley is rotatably disposed inside the connecting frame. When the chair is placed, the bottom of the pulley protrudes from the legs of the chair body. When the chair is pressed down by force, the bottom of the pulley is flush with the bottom of the legs of the chair body.

[0007] Furthermore, the bending connector is integrally formed from a support frame and an L-shaped fixing frame. The upper end of the L-shaped fixing frame is connected to the side wall of the support frame, and the lower end is fixed to the bottom of the chair legs by fasteners.

[0008] Furthermore, the outer contour dimension of the connecting frame is smaller than the inner contour dimension of the support frame.

[0009] Furthermore, the top of the support frame is provided with a through hole through which the lead screw can pass, and the outer diameter of the through hole is larger than the maximum outer diameter of the lead screw.

[0010] The beneficial effects of this utility model are as follows: The seat of this utility model is designed so that when the seat is normally placed, it can be dragged and moved by the rolling force of the pulley. When the seat is pressed downward, the pulley pushes upward against the pressure spring, forcing the pressure spring to contract, and the pulley moves upward so that the bottom of the pulley is flush with the bottom of the seat legs. The two states of the switchable moving component can effectively realize the retraction and extension of the pulley, and can effectively solve the problems of difficulty in moving the seat and the seat sliding due to forgetting to brake.

[0011] The L-shaped fixing bracket is fixed to the bottom of the chair legs with fasteners, which can improve the stability of the pulley fixing and avoid the problem of existing connectors easily detaching from the chair legs;

[0012] The limitation of the outer contour dimensions of the connecting frame ensures that the connecting frame will not be interfered with by the support frame when it moves upward, and can move up and down within the support frame. At the same time, the inner top surface of the support frame limits the top of the pressure spring to prevent the pressure spring from popping out.

[0013] The through hole at the top of the support frame allows the lead screw to move smoothly up and down within the hole without being interfered with by the thread, thus improving the smoothness of the pulley's up and down movement. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is an overall structural diagram of a seat with switchable movement modes according to this utility model;

[0016] Figure 2 This is a structural diagram of a switchable movable component for a seat with a switchable movable mode according to the present invention;

[0017] Figure 3 This is an exploded view of the switchable movement component of a seat with a switchable movement mode according to this utility model;

[0018] In the diagram: 1-chair body, 2-switchable movable component, 21-bending connector, 22-lead screw, 23-connecting frame, 24-pulley, 25-second limit nut, 26-pressure spring, 211-support frame, 212-L-shaped fixing frame, 2111-through hole. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In one specific embodiment of this utility model, such as Figure 1-3 As shown, a switchable movement mode seat is disclosed, including a chair body 1 and switchable movement components 2 respectively disposed on the outside of the legs of the chair body 1. The switchable movement components 2 include a bending connector 21, a lead screw 22, a connecting frame 23 and a pulley 24. The bending connector 21 is fixed to the legs of the chair body 1 by fasteners. The lead screw 22 is vertically inserted through the upper part of the bending connector 21. Both ends of the lead screw 22 extend out of the bending connector 21. The lower end of the lead screw 22 extends through the connecting frame 23 and is screwed with a first limiting nut. The upper end extends out and is screwed with a second limiting nut 25. A pressure spring 26 is sleeved on the outer wall of the lead screw 22. The pressure spring 26 is located between the bending connector 21 and the connecting frame 23. The pulley 24 is rotatably disposed inside the connecting frame 23. When the chair is placed, the bottom of the pulley 24 protrudes from the legs of the chair body 1. When the chair is pressed down by force, the bottom of the pulley 24 is flush with the bottom of the legs of the chair body 1.

[0021] The seat is designed so that when the seat is in its normal position, it can be dragged and moved by the rolling force of the pulley 24. When downward pressure is applied to the seat, the pulley 24 pushes upward against the pressure spring 26, forcing the pressure spring 26 to contract, and the pulley 24 moves upward so that the bottom of the pulley 24 is flush with the bottom of the legs of the chair body 1. The two states of the switchable moving component can effectively realize the extension and retraction of the pulley 24, and can effectively solve the problems of difficulty in moving the seat and seat slippage caused by forgetting to brake.

[0022] The bending connector 21 is integrally formed by the support frame 211 and the L-shaped fixing frame 212. The upper end of the L-shaped fixing frame 212 is connected to the side wall of the support frame 211, and the lower end is fixed to the bottom of the legs of the chair body 1 by fasteners.

[0023] The L-shaped fixing bracket 212 is fixed to the bottom of the legs of the chair body 1 by fasteners, which can improve the stability of the pulley 24 and avoid the problem of easy separation between the existing connecting parts and the chair legs.

[0024] The outer contour dimension of the connecting frame 23 is smaller than the inner contour dimension of the support frame 211. The limitation of the outer contour dimension of the connecting frame 23 can prevent the connecting frame 23 from being interfered with by the support frame 211 when it moves upward, and can move up and down within the support frame 211. At the same time, the inner top surface of the support frame 211 limits the top of the pressure spring 26 to prevent the pressure spring 26 from popping out.

[0025] The top of the support frame 211 is provided with a through hole 2111 through which the lead screw 22 can pass. The outer diameter of the through hole 2111 is larger than the maximum outer diameter of the lead screw 22. The through hole 2111 at the top of the support frame 211 allows the lead screw 22 to move up and down smoothly in the through hole 2111 without being interfered with by the thread, thus improving the smoothness of the pulley 24 moving up and down.

[0026] The working process of this utility model:

[0027] Installation process with switchable mobile components:

[0028] The lower end of the L-shaped fixing bracket 212 of the switchable movable component 2's bent connector 21 is fixed to the bottom of the legs of the chair body 1 with fasteners. At this time, the vertical section of the L-shaped fixing bracket 212 is located on one side of the legs of the chair body 1, and the outer wall of the vertical section of the L-shaped fixing bracket 212 is in contact with the side wall of the legs. The lower end of the screw rod 22 extends after passing through the connecting frame 23, and a first limiting nut is screwed on its lower end. A pressure spring 26 is fitted on the screw rod 22. The upper end of the screw rod 22 extends after passing through the support frame 211, and the lower part of the support frame 211 covers the outside of the connecting frame 23. A second limiting nut 25 is screwed on the screw rod 22. When the pressure spring 26 is in the naturally unfolded state, the second limiting nut 25 no longer screws down. The pulley 24 is installed on the lower part of the connecting frame 23, and the bottom of the pulley 24 protrudes from the lower end of the L-shaped fixing bracket 212.

[0029] When the chair is placed normally, the bottom of the pulley 24 protrudes from the lower end of the L-shaped fixing bracket 212, so the chair body 1 can be moved directly. The pulley 24 contacts the ground, reducing friction, thus solving the problem of difficulty in moving a regular chair.

[0030] When the seat is subjected to downward pressure from a person or an object, the pulley 24 moves upward relative to the ground under the reaction force of the ground. At the same time, the connecting frame 23 moves upward and extends into the support frame 211. At this time, the pressure spring 26 is compressed, and the lead screw 22 extends upward from the through hole 2111 at the top of the support frame 211. After compression, the bottom of the pulley 24 is flush with the lower end of the L-shaped fixing frame 212, and it stops moving upward, so as to realize the retraction of the pulley 24. This facilitates daily sitting for people or daily placement of objects, and avoids the problem of the seat sliding and becoming unusable.

[0031] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A seat with switchable movement modes, characterized in that, The assembly includes a chair body (1) and switchable movable components (2) respectively disposed on the outer sides of the legs of the chair body (1). The switchable movable components (2) include a bending connector (21), a lead screw (22), a connecting frame (23), and a pulley (24). The bending connector (21) is fixed to the legs of the chair body (1) by fasteners. The lead screw (22) is vertically inserted through the upper part of the bending connector (21). Both ends of the lead screw (22) extend out of the bending connector (21), and the lower end of the lead screw (22) extends out through the connecting frame (24). The connecting frame (23) is screwed with a first limiting nut, and the upper end is screwed with a second limiting nut (25). A pressure spring (26) is sleeved on the outer wall of the lead screw (22). The pressure spring (26) is located between the bending connector (21) and the connecting frame (23). The pulley (24) is rotatably arranged inside the connecting frame (23). When the seat is placed, the bottom of the pulley (24) protrudes from the legs of the chair body (1). When the seat is pressed down, the bottom of the pulley (24) is flush with the bottom of the legs of the chair body (1).

2. A switchable movement mode seat according to claim 1, characterized in that, The bending connector (21) is integrally formed from a support frame (211) and an L-shaped fixing frame (212). The upper end of the L-shaped fixing frame (212) is connected to the side wall of the support frame (211), and the lower end is fixed to the bottom of the legs of the chair body (1) by fasteners.

3. A switchable movement mode seat according to claim 2, characterized in that, The outer contour dimension of the connecting frame (23) is smaller than the inner contour dimension of the support frame (211).

4. A switchable movement mode seat according to claim 2, characterized in that, The top of the support frame (211) is provided with a through hole (2111) through which the lead screw (22) can pass. The outer diameter of the through hole (2111) is larger than the maximum outer diameter of the lead screw (22).

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