Anti-toppling noon break chair

Abstract

The utility model provides an anti-toppling chair for noon break, which relates to the technical field of chairs for noon break and comprises a chair plate, two fixing legs are fixedly connected to the bottom surface of the chair plate, and two auxiliary supporting mechanisms are arranged below the chair plate. The auxiliary supporting mechanism comprises a rotating rod rotationally connected to the bottom face of the seat plate and two first anti-disengaging guide rails fixedly connected to the bottom face of the seat plate, the inner walls of the two first anti-disengaging guide rails are both slidably connected with first anti-disengaging sliding blocks, and the bottom faces of the two first anti-disengaging sliding blocks are both fixedly connected with adjustable supporting legs. According to the anti-toppling noon break chair, through the arrangement of the auxiliary supporting mechanism, the adjustable supporting legs can be moved out for auxiliary supporting when the back plate and the leg supporting plate are unfolded, compared with an existing noon break chair with the small occupied area of the supporting legs, better stability can be achieved, and the situation that a student topples and hurts the student with noon break when accidentally touching the noon break chair is avoided; the safety is higher, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to a lunch break chair that prevents tipping, specifically a lunch break chair that prevents tipping, belonging to the technical field of lunch break chairs. Background Technique

[0002] A student chair refers to a chair used in schools for students to attend classes and rest. Some students take a lunch break at school. To avoid students lying on the table and affecting their spines and cervical vertebrae, there are some lunch break chairs with adjustable backrests, enabling students to lie on the chairs and rest.

[0003] In a modified lunch break chair disclosed in the Chinese Patent Application Publication Specification CN218008904U, this lunch break chair can be adjusted into two states: a state for class use and a state for lunch break. It can be used as a regular chair for class and also allows students to lie flat for a lunch break, improving the usability and enabling students to have a comfortable lunch break.

[0004] However, during the implementation of the technical solution of the above patent, the occupied area of the support legs of the lunch break chair is relatively small. Existing lunch break chairs are designed with a backrest and leg rest that can be unfolded for rest. The use environment of the lunch break chair is a classroom with a large number of students. A relatively small occupied area of the support legs can ensure that the space occupied by the lunch break chair when the backrest and leg rest are retracted does not affect the movement of students. However, the support legs with a small occupied area also result in unstable support for the lunch break chair when the backrest and leg rest are unfolded. Students are likely to bump into the lunch break chair when walking, causing the students taking a lunch break to tip over. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a lunch break chair that prevents tipping in order to solve the problem in the prior art that the occupied area of the support legs of the lunch break chair is relatively small, resulting in the inability of the support legs to stably support the lunch break chair when the backrest reclines and the leg rest unfolds.

[0006] The present utility model is realized through the following technical solutions: A lunch break chair that prevents tipping, including a seat board, two fixed legs are fixedly connected to the bottom surface of the seat board, and two auxiliary support mechanisms are arranged below the seat board. The auxiliary support mechanism includes a rotating rod rotatably connected to the bottom surface of the seat board and two first anti - detachment guide rails fixedly connected to the bottom surface of the seat board. The inner walls of the two first anti - detachment guide rails are both slidably connected with first anti - detachment sliders, and adjustable support legs are fixedly connected to the bottom surfaces of the two first anti - detachment sliders;

[0007] A gear is fixedly connected to the bottom end of the rotating rod, and racks are fixedly connected to one side surface of the two first anti - detachment sliders close to the gear. Both of the two racks are meshed with the gear.

[0008] Preferably, a backrest adjustment mechanism is provided outside the seat board. The backrest adjustment mechanism includes a back plate hinged to the outer surface of the seat board and two second anti - detachment guide rails fixedly connected to the bottom surface of the seat board. A second anti - detachment slider is slidably connected to the inner wall of each of the two second anti - detachment guide rails, and the second anti - detachment guide rails guide the movement of the second anti - detachment sliders.

[0009] Two connecting blocks are fixedly connected to the outer surface of the above - mentioned back plate. Connecting rods are hinged to the outer surfaces of the two connecting blocks. The ends of the two connecting rods away from the connecting blocks are respectively hinged to the bottom surfaces of the two second anti - detachment sliders. Under the connection of the connecting blocks and the connecting rods, the back plate can drive the second anti - detachment sliders to move when the back plate is unfolded or stored.

[0010] Furthermore, springs are fixedly connected to the mutually - remote side surfaces of the two second anti - detachment guide rails. Disks are fixedly connected to the ends of the two springs away from the second anti - detachment guide rails. Limiting rods are fixedly connected to the outer surfaces of the two disks. The two limiting rods respectively penetrate through the two second anti - detachment guide rails and are slidably connected to the two second anti - detachment guide rails. The two limiting rods are respectively adapted to the two second anti - detachment sliders. Two limiting holes adapted to the limiting rods are provided on the second anti - detachment sliders. Inserting the limiting rods into the two limiting holes respectively represents the unfolded and stored states of the back plate.

[0011] Preferably, a leg rest adjustment mechanism is provided below the seat board. The leg rest adjustment mechanism includes a leg rest board and a guide seat fixedly connected to the bottom surface of the seat board. A sliding plate is slidably connected to the inner wall of the guide seat, and the guide seat guides the movement of the sliding plate.

[0012] An articulated seat is hinged to the outer surface of the above - mentioned sliding plate. The articulated seat is fixedly connected to the outer surface of the leg rest board. The leg rest board is adapted to the sliding plate, and the leg rest board can be placed on the sliding plate to facilitate the student's legs to be placed on the leg rest board.

[0013] The present utility model provides an anti - tipping lunch break chair, and its beneficial effects are as follows:

[0014] 1. Through the setting of the auxiliary support mechanism, the anti - tipping lunch break chair can move out the adjustable support legs for auxiliary support when the back plate and the leg rest board are unfolded. Compared with the existing lunch break chairs with smaller occupied areas of the support legs, it can have better stability, avoid the chair from tipping over when a student accidentally touches it and hurting the students taking a lunch break, and has higher safety and is convenient to use.

[0015] 2. Through the setting of the backrest adjustment mechanism and the leg rest adjustment mechanism, the student's legs can be placed on the unfolded leg rest board, and when the back plate reclines, it is convenient for the student to lie on the seat board to rest. The student can lie on the lunch break chair more comfortably, which can improve the lunch break quality and avoid the student damaging the spine by lying on the table to rest. Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model when being stored;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the present utility model when being unfolded;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the first anti - detachment guide rail and adjustable support legs of the present utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the leg support plate and backrest plate of the present utility model;

[0020] Figure 5 It is a split - body structural schematic diagram of the second anti - detachment guide rail, second anti - detachment slider and limit rod of the present utility model.

[0021] Description of the Reference Numerals

[0022] 1. Seat plate; 2. Fixed legs;

[0023] 3. Auxiliary support mechanism; 31. First anti - detachment guide rail; 32. Rotating rod; 33. Gear; 34. First anti - detachment slider; 35. Adjustable support leg; 36. Rack;

[0024] 4. Backrest adjustment mechanism; 41. Backrest plate; 42. Second anti - detachment guide rail; 43. Connecting block; 44. Connecting rod; 45. Second anti - detachment slider; 46. Spring; 47. Disc; 48. Limit rod;

[0025] 5. Leg support adjustment mechanism; 51. Leg support plate; 52. Guide seat; 53. Sliding plate; 54. Hinge seat. Detailed Description of the Embodiment

[0026] An embodiment of the present utility model provides a lunch break chair that prevents tipping.

[0027] Please refer specifically to Figure 1 , Figure 2 and Figure 3 , which includes a seat plate 1. Two fixed legs 2 are fixedly connected to the bottom surface of the seat plate 1. Two auxiliary support mechanisms 3 are arranged below the seat plate 1. The auxiliary support mechanism 3 includes a rotating rod 32 rotatably connected to the bottom surface of the seat plate 1 and two first anti - detachment guide rails 31 fixedly connected to the bottom surface of the seat plate 1. The inner walls of the two first anti - detachment guide rails 31 are both slidably connected with first anti - detachment sliders 34. The bottom surfaces of the two first anti - detachment sliders 34 are both fixedly connected with adjustable support legs 35, and the adjustable support legs 35 can assist in supporting the seat plate 1.

[0028] The bottom end of the rotating rod 32 is fixedly connected to a gear 33. On one side of each of the two first anti - detachment sliders 34 close to the gear 33, a rack 36 is fixedly connected. Both racks 36 are meshed with the gear 33. Under the action of the gear 33, when the two racks 36 move, they will move away from or close to each other.

[0029] Please refer particularly to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 ,A backrest adjustment mechanism 4 is arranged outside the seat plate 1. The backrest adjustment mechanism 4 includes a back plate 41 hinged on the outer surface of the seat plate 1 and two second anti - detachment guide rails 42 fixedly connected to the bottom surface of the seat plate 1. A second anti - detachment slider 45 is slidably connected to the inner wall of each of the two second anti - detachment guide rails 42. The second anti - detachment guide rails 42 play a guiding role for the movement of the second anti - detachment slider 45.

[0030] Two connecting blocks 43 are fixedly connected to the outer surface of the above - mentioned back plate 41. Connecting rods 44 are hinged to the outer surfaces of both connecting blocks 43. The ends of the two connecting rods 44 far from the connecting blocks 43 are respectively hinged to the bottom surfaces of the two second anti - detachment sliders 45. Under the connection action of the connecting blocks 43 and the connecting rods 44, when the back plate 41 is unfolded or stored, it can drive the second anti - detachment slider 45 to move.

[0031] On one side of each of the two second anti - detachment guide rails 42 far from each other, a spring 46 is fixedly connected. One end of each of the two springs 46 far from the second anti - detachment guide rail 42 is fixedly connected to a disc 47. A limiting rod 48 is fixedly connected to the outer surface of each of the two discs 47. The two limiting rods 48 respectively penetrate through the two second anti - detachment guide rails 42 and are respectively slidably connected to the two second anti - detachment guide rails 42. The two limiting rods 48 are respectively adapted to the two second anti - detachment sliders 45. Two limiting holes adapted to the limiting rods 48 are opened on the second anti - detachment slider 45. Inserting the limiting rods 48 into the two limiting holes respectively represents the unfolded and stored states of the back plate 41.

[0032] Please refer particularly to Figure 1 、 Figure 2 and Figure 4 ,A leg rest adjustment mechanism 5 is arranged below the seat plate 1. The leg rest adjustment mechanism 5 includes a leg rest plate 51 and a guide seat 52 fixedly connected to the bottom surface of the seat plate 1. A sliding plate 53 is slidably connected to the inner wall of the guide seat 52. The guide seat 52 plays a guiding role for the movement of the sliding plate 53.

[0033] An articulated seat 54 is hinged to the outer surface of the above - mentioned sliding plate 53. The articulated seat 54 is fixedly connected to the outer surface of the leg rest plate 51. The leg rest plate 51 is adapted to the sliding plate 53. The leg rest plate 51 can be placed on the sliding plate 53 to facilitate the student's legs to be placed on the leg rest plate 51.

[0034] Working principle: Pull out the sliding plate 53, turn over the leg support plate 51, put the leg support plate 51 on the sliding plate 53, and place the student's legs on the leg support plate 51. Pull the disc 47 outward to pull the limit rod 48 out of the second anti-slip slider 45. At this time, the spring 46 will be stretched, and then the back plate 41 will be tilted backward. The second anti-slip slider 45 is pushed to move through the connecting block 43 and the connecting rod 44. Release the disc 47. Under the elastic force of the stretched spring 46, the limit rod 48 is pushed to insert into the second anti-slip slider 45 to complete the unfolding of the back plate 41.

[0035] Pull the adjustable support leg 35 outward, and under the meshing action of the rack 36 and the gear 33, the two racks 36 move away from each other, so that the two adjustable support legs 35 move away from each other. At this time, the combination of the fixed leg 2 and the adjustable support leg 35 occupies a larger area, provides more stable support for the nap chair, and makes the nap chair less likely to tip over. Compared with the existing nap chair support legs with a smaller footprint, this device can have better stability and prevent students from accidentally touching the nap chair and causing it to tip over and injuring classmates who are taking a nap.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An anti-tipping lunch break chair, comprising a seat plate (1), characterized in that: The bottom surface of the seat plate (1) is fixedly connected to two fixed legs (2), and two auxiliary support mechanisms (3) are arranged below the seat plate (1), and the auxiliary support mechanism (3) includes a rotating rod (32) rotatably connected to the bottom surface of the seat plate (1) and two first anti-slip guide rails (31) fixedly connected to the bottom surface of the seat plate (1), the inner walls of the two first anti-slip guide rails (31) are slidably connected to first anti-slip sliders (34), and the bottom surfaces of the two first anti-slip sliders (34) are fixedly connected to adjustable support legs (35); The bottom end of the rotating rod (32) is fixedly connected to a gear (33), and the side surfaces of the two first anti-slipping sliding blocks (34) close to the gear (33) are fixedly connected to racks (36), and the two racks (36) are meshed with the gear (33).

2. The anti-dumping lunch break chair according to claim 1, characterized in that: A backrest adjustment mechanism (4) is arranged outside the seat plate (1), and the backrest adjustment mechanism (4) comprises a back plate (41) hinged on the outer surface of the seat plate (1) and two second anti-slip guide rails (42) fixedly connected to the bottom surface of the seat plate (1), and the inner walls of the two second anti-slip guide rails (42) are slidably connected with second anti-slip sliders (45).

3. The anti-dumping lunch break chair according to claim 2, characterized in that: Two connecting blocks (43) are fixedly connected to the outer surface of the back plate (41), and connecting rods (44) are hinged to the outer surfaces of the two connecting blocks (43), and the ends of the two connecting rods (44) away from the connecting blocks (43) are respectively hinged to the bottom surfaces of two second anti-slip sliding blocks (45).

4. The anti-dumping lunch break chair according to claim 2, characterized in that: The side surfaces of the two second anti-slip guide rails (42) that are away from each other are fixedly connected with springs (46), the ends of the two springs (46) that are away from the second anti-slip guide rails (42) are fixedly connected with disks (47), the outer surfaces of the two disks (47) are fixedly connected with limiting rods (48), the two limiting rods (48) respectively penetrate the two second anti-slip guide rails (42) and are respectively slidably connected with the two second anti-slip guide rails (42), and the two limiting rods (48) are respectively adapted to the two second anti-slip sliders (45).

5. The anti-dumping lunch break chair according to claim 1, characterized in that: A leg rest adjustment mechanism (5) is provided below the seat plate (1), and the leg rest adjustment mechanism (5) comprises a leg rest plate (51) and a guide seat (52) fixedly connected to the bottom surface of the seat plate (1), and a sliding plate (53) is slidably connected to the inner wall of the guide seat (52).

6. The anti-dumping lunch break chair according to claim 5, characterized in that: The outer surface of the sliding plate (53) is hinged with a hinge seat (54), and the hinge seat (54) is fixedly connected to the outer surface of the leg support plate (51), and the leg support plate (51) is adapted to the sliding plate (53).

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