Reversible chair surface

Abstract

The utility model discloses a turnover chair surface. The folding chair comprises a chair surface frame, a turning plate and a shaft, wherein the turning plate is rotatably fixed on the chair surface frame through the shaft. A limiting plate is arranged on the turning plate, and a fixing plate is arranged at the position corresponding to the limiting plate of the seat frame; or spring cotters or spring balls are arranged on the seat frame, and holes matched with the spring cotters or the spring balls are formed in the mounting side wall of the turning plate, so that the turning plate is fixed. The reversible chair surface is designed and is mounted on a common chair to serve as the chair surface; when the chair is used, the chair surface is turned over, so that the problem that the chair is heated after a previous user sits for a long time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of chair seats, in particular to a flippable chair seat. Background Art

[0002] Considering public places, especially those requiring long waits, such as offices and banks, chairs often experience overheating after a previous user has sat for a long time. To avoid this awkward situation, this utility model proposes a reversible seat. This reversible seat can be used with stools and chairs of various structures, shapes, and appearances, offering both practicality and flexibility. Summary of the Invention

[0003] The purpose of the utility model is to provide a flippable chair seat.

[0004] The utility model comprises a seat frame, a flap, and a shaft. The flap is rotatably fixed to the seat frame via the shaft. A limit plate is provided on the flap, and a fixing plate is provided at a position corresponding to the limit plate of the seat frame. Alternatively, the flap is fixed by providing a spring latch or spring ball on the seat frame and opening a hole on the side wall of the flap for use with the spring latch or spring ball.

[0005] Furthermore, tracks are provided on two opposite sides of the seat frame, and a shaft is provided on one side of the flap. Both ends of the shaft are slidably fixed in the tracks through bearings and bearing seats and can move along the tracks.

[0006] Furthermore, both ends of the shaft are detachably mounted on the seat frame via self-aligning bearings, bearing seats and screws.

[0007] Furthermore, maintenance sealing plates are detachably fixed to the outside of the bearing seats on both sides by screws.

[0008] Furthermore, two limit plates are staggered in the vertical direction of the flap, and a fixing plate is provided on the seat frame.

[0009] Furthermore, limit plates are provided at both diagonal corners of the flap, and a fixed plate is provided on the side wall of the seat frame for use with the two limit plates; steps are provided on both sides of the first limit plate, and a step is provided on one side of the second limit plate; the fixed plates include a first fixed plate, a second fixed plate, and a third fixed plate, the first and second fixed plates being symmetrically arranged on the seat frame with the axis as the center, flush with one side of the flap; a third fixed plate is provided at one end of the first fixed plate for use with the second limit plate, and the third fixed plate is flush with the other side of the flap; a slot for use with the second limit plate is provided at one end of the second fixed plate at a symmetrical position of the third fixed plate. The first limit plate is vertically located below the first and second fixed plates, and the second limit plate is vertically located above the third fixed plate.

[0010] Furthermore, the shaft is a universal shaft, and the side wall of the flap is rotatably fixed to the seat frame via a universal shaft / spherical universal joint.

[0011] Furthermore, the flap includes a frame and a panel. The frame is made of stainless steel, and the stainless steel is covered with a panel made of plastic.

[0012] Furthermore, a handle is provided on the flap.

[0013] Furthermore, the flap is provided with ventilation holes.

[0014] This utility model features a reversible seat that can be installed on a common chair. During use, the seat flips over to avoid overheating caused by the previous user sitting for an extended period. The two sides of the flap can also be designed with different materials, such as a soft material (leather, velvet, etc.) on one side and a hard material (iron, PP plastic, wood, etc.) on the other, to enhance comfort at varying temperatures. Furthermore, considering the high frequency of chair use in public settings, the seat is designed to be removable for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic top view and cross-sectional view of the overall structure of Example 1 of the utility model;

[0016] Figure 2 This is a side cross-sectional schematic diagram of the overall structure of Example 1 of the present utility model;

[0017] Figure 3 Schematic diagram of the assembly structure of the shaft and the seat frame in Example 1;

[0018] Figure 4 This is a side view schematic diagram of the overall structure of Example 2 of the present utility model;

[0019] Figure 5 This is a schematic top view of the overall structure of Example 3 of the present utility model;

[0020] Figure 6 Schematic diagram of the structure of the flap, fixed plate and seat frame in Example 3;

[0021] Figure 7 Schematic diagram of the structure of the fixed plate and the seat frame in Example 3;

[0022] Figure 8 Schematic diagram of the internal structure of the flap in Example 3;

[0023] Figure 9 This is a schematic top view of the overall structure of Example 4 of the present utility model;

[0024] Figure 10This is a schematic diagram of the overall structure of Example 5 of the present utility model. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings. Example

[0026] like Figure 1 and 2 As shown, a flip seat comprises a seat frame 1, a flap 2 and a shaft 3, wherein the flap 2 is rotatably fixed to the seat frame 1 via the shaft 3. The seat frame 1 and the flap 2 are located on the same horizontal plane, and their top surfaces are horizontally aligned.

[0027] In this embodiment, the seat frame 1 is a hollow square, and the shaft 3 is fixed to the middle of the flap 2 by screws (it can also be welded to the flap). Figure 3 As shown, the two ends of the shaft 3 are detachably arranged in the middle of the seat frame through self-aligning bearings, bearing seats and screws, parallel to two sides of the seat frame. An inspection cover 4 is detachably fixed to the outside of the bearing seats on both sides by screws.

[0028] In this embodiment, the flap 2 is a square flap, and an axis 3 is fixedly provided in the middle of the flap; a limit plate 5 is provided in the middle of both sides of the flap parallel to the axis, and the two limit plates 5 are staggered in the vertical direction; a fixed plate 6 is provided on one side of the seat frame 1 parallel to the axis 3, and a spring pin 7 is provided on the other side of the seat frame 1 parallel to the axis 3. At the same time, holes for cooperating with the spring pin 7 are opened on both sides of the flap mounting limit plate.

[0029] To flip the flap, pull the spring latch 7 to unlock it. Rotate the flap, driving the two limit plates 5. When either limit plate 5 contacts the fixed plate 6, flipping is complete. Release the spring latch 7, and the spring force locks the flap, completing the flip. Because the two limit plates 5 are vertically offset, both horizontal surfaces of the flap remain flush with the seat frame 1 upon completion, ensuring comfortable use, regardless of whether the flap is rotating forward or backward.

[0030] At the same time, in order to make the seat more breathable, ventilation holes 8 are also opened on the flap 2 in this embodiment. Example

[0031] like Figure 4 As shown, all structures of this embodiment are the same as those of embodiment 1, except that the spring latch 7 is replaced with a spring ball 9, which is fixed to the seat frame 1 by a thread, and holes for use with the spring ball 9 are opened on both sides of the flap mounting limit plate;

[0032] When the flap needs to be flipped, a vertical force is applied to the side of the flap close to the spring ball 9 to squeeze the ball, causing the spring to deform inward and unlock the flap; the flap is rotated to drive the two limit plates 5 to rotate. When any limit plate 5 touches the fixed plate 6, the flip is completed; at this time, the spring ball 9 is opposite to the hole on the side of the flap, and the ball bounces into the hole under the action of the spring, locking the flap under the action of the elastic force, completing the flip.

[0033] In this embodiment, the spring ball 9 includes a spring and a ball. The ball is fixed to one end of the spring, and the other end of the spring is fixed to a screw and fixed to the seat frame 1 through threads. Example

[0034] like Figure 5 As shown, a reversible chair seat comprises a seat frame 1, a flap 2, and an axis 3. The flap 2 is rotatably fixed to the seat frame 1 via the axis 3. The seat frame 1 is a hollow square, and the flap 2 is a square. The two ends of the axis 3 are detachably mounted in the middle of the seat frame, parallel to two sides of the seat frame. In this embodiment, limit plates 5 are provided at opposite corners of the flap, and the two limit plates are integrally formed with the flap. Fixed plates 6 are provided on both sides of the seat frame parallel to the axis 3, and are used in conjunction with the two limit plates.

[0035] like Figure 6 and 7 As shown, in this embodiment, steps are provided on both sides of the first limiting plate 5-1 (the step thickness is the same as that of the fixed plate), and a step is provided on one side of the second limiting plate 5-2 (the step thickness is the same as that of the fixed plate). The fixed plate 6 includes a first fixing plate 6-1, a second fixing plate 6-2, and a third fixing plate 6-3. The first fixing plate 6-1 and the second fixing plate 6-2 are symmetrically arranged on the seat frame 1 with the axis as the center, and are flush with one side of the flap 2. The third fixing plate 6-3 is provided at one end of the first fixing plate 6-1 to cooperate with the second limiting plate 5-2, and the third fixing plate is flush with the other side of the flap 2. A hollow groove is provided at one end of the second fixing plate at a symmetrical position with the third fixing plate to cooperate with the second limiting plate. The first limiting plate 5-1 is vertically located below the first and second fixing plates 6-1 and 6-2, and the second limiting plate 5-2 is vertically located above the third fixing plate 6-3.

[0036] A spring latch 7 is provided on the flap 2 , and a hole is provided on the side wall of the flap 2 opposite to the spring latch 7 .

[0037] During use, when the first limiting plate 5-1 is in contact with the first fixed plate 6-1 via one step, the second limiting plate 5-2 is located in the empty slot. To flip the flap, pull the spring latch 7 to unlock the flap. Apply a downward force to the first limiting plate 5-1, rotating the flap, driving the second limiting plate 5-2 to rotate toward the third fixed plate 6-3. When one step of the second limiting plate 5-2 is in contact with the third fixed plate 6-3, the first limiting plate 5-1 is in contact with the second fixed plate 6-2 via the other step, completing the flip. Release the spring latch 7, and the flap is locked by the elastic force, completing the flip. To flip the flap again, rotate the first limiting plate 5-1 in the opposite direction.

[0038] Each time the container is rotated 90°, the second limiting plate 5-2 can be pressed downward to make the flipping process more labor-saving.

[0039] like Figure 8 As shown, in this embodiment, the flap 2 includes a frame 10 and a panel 11, and the frame 10 is welded to the shaft 3 (it can also be fixed by screws);

[0040] In this embodiment, the frame is made of stainless steel, and a panel 11 made of plastic is coated on the outside of the stainless steel. Example

[0041] like Figure 9 As shown, a flip seat includes a seat frame 1, a flap 2 and a shaft 3. In this embodiment, the seat frame 1 is annular and the flap is circular; the shaft 3 is a universal joint or a spherical universal joint, and the side wall of the flap 2 is rotatably fixed to the seat frame 1 through the universal joint or the spherical universal joint, and a handle 12 is provided on the flap 2.

[0042] The flap 2 is fixed by setting a fixing plate at the bottom of the seat frame 1; or by setting a spring pin or spring ball on the seat frame, and opening a hole on the flap mounting side wall for use with the spring pin or spring ball to fix the flap 2.

[0043] When the chair seat needs to be flipped, lift the flap 2 by the handle to make it move vertically along the installation point; after the flap 3 is suspended in the air, turn the flap so that it rotates along the installation point; after flipping 180°, reset the flap to complete the flip. Example

[0044] like Figure 10 As shown, a reversible chair seat comprises a seat frame 1, a flap 2, and a shaft 3. In this embodiment, the seat frame 1 is a hollow square, and the flap is a square. Tracks 13 are provided on opposite sides of the seat frame 1, and the shaft 3 is provided on one side of the flap. Both ends of the shaft 3 are slidably fixed in the tracks 13 via bearings and bearing seats, allowing it to move along the tracks. A handle 12 is provided on the flap 2.

[0045] The flap 2 is fixed by setting a fixing plate at the bottom of the seat frame 1; or by setting a spring pin or spring ball on the seat frame, and opening a hole on the flap mounting side wall for use with the spring pin or spring ball to fix the flap 2.

[0046] To flip the seat, lift the flap 2 by the handle and pull it along the track from one end to the other. At the same time, turn the flap at the appropriate position and put it down to complete the flip.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and is intended to encompass all variations within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

Claims

1. A reversible chair seat, characterized in that: It includes a seat frame, a flap and a shaft, and the flap can be rotatably fixed to the seat frame through the shaft; a limit plate is provided on the flap, and a fixed plate is provided at the corresponding position of the limit plate of the seat frame; or a spring pin or spring ball is provided on the seat frame, and a hole for use with the spring pin or spring ball is opened on the side wall of the flap installation to fix the flap.

2. The reversible seat according to claim 1, wherein: Tracks are arranged on two opposite sides of the seat frame, and a shaft is arranged on one side of the flap. Both ends of the shaft can be slidably fixed in the tracks through bearings and bearing seats and can move along the tracks.

3. The reversible seat according to claim 2, wherein: The two ends of the shaft are detachably arranged on the seat frame through self-aligning bearings, bearing seats and screws.

4. The reversible chair seat according to claim 2 or 3, characterized in that: Inspection sealing plates are detachably fixed to the outside of the bearing seats on both sides by screws.

5. The reversible seat according to claim 1, wherein: Two limiting plates are staggered in a vertical direction of the flip plate, and a fixing plate is arranged on the seat surface frame.

6. The reversible seat according to claim 1, wherein: Limiting plates are provided at both diagonal corners of the flip plate, and fixing plates used in conjunction with the two limiting plates are provided on the side walls of the seat frame; steps are provided on both sides of the first limiting plate, and a step is provided on one side of the second limiting plate; the fixing plates include a first fixing plate, a second fixing plate and a third fixing plate, and the first fixing plate and the second fixing plate are symmetrically arranged on the seat frame with the axis as the center, and are flush with one side of the flip plate; a third fixing plate cooperating with the second limiting plate is provided at one end of the first fixing plate, and the third fixing plate is flush with the other side of the flip plate; an empty groove cooperating with the second limiting plate is provided at one end of the second fixing plate at a symmetrical position of the third fixing plate; The first limiting plate is located below the first fixing plate and the second fixing plate in a vertical direction, and the second limiting plate is located above the third fixing plate in a vertical direction.

7. The reversible seat according to claim 1, wherein: The shaft is a universal shaft, and the side wall of the flap is rotatably fixed to the seat frame via a universal shaft / spherical universal joint.

8. The reversible seat according to claim 1, wherein: The flap comprises a frame and a panel. The frame is made of stainless steel, and the stainless steel is covered with a panel made of plastic.

9. The reversible chair seat according to claim 2 or 7, wherein: A handle is provided on the flap.

10. The reversible chair seat according to any one of claims 1 to 3 and 5 to 8, characterized in that: The flap is provided with ventilation holes.

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