Student chair for noon break

Abstract

The utility model discloses a noon break student chair which comprises a frame assembly, a cushion, a backrest assembly and a headrest assembly, the cushion is installed at the top of the frame assembly, the backrest assembly is slidably connected with the frame assembly, and the headrest assembly is slidably connected with the backrest assembly; the headrest assembly comprises a connecting plate, one side of the connecting plate is rotationally connected with a headrest, one side of the connecting plate is in threaded connection with a connecting back plate, a positioning device is arranged between the connecting plate and the connecting back plate, and the connecting plate and the connecting back plate slide on the sliding strip; the student chair for noon break solves the problems that when a headrest on an existing student chair for noon break moves, the headrest can only move to the topmost end and the bottommost end, no locking device is arranged, consequently, the headrest shifts when a student lies on the headrest and turns over, a sliding part of the headrest is abraded after long-term use, and when the headrest is placed at the topmost end, the headrest is not prone to moving. The technical problem is solved.

Description

Technical Field

[0001] The present application relates to the technical field of student chairs, and in particular to a lunch break student chair. Background Art

[0002] The Lunch Break Student Chair is a special desk and chair designed for students to rest during lunch breaks. This adjustable desk and chair allows students to use it as a regular desk during class, and then, with a simple operation, transform it into a reclining chair for a comfortable resting environment during lunch break. Designed with students' needs in mind, the Lunch Break Student Chair includes adjustable height and angle desks and chairs, as well as a small compartment for pillows and blankets for added comfort. Furthermore, this desk and chair addresses the issue of students not getting enough rest during lunch breaks. By providing a comfortable place to lie down and sleep, it helps improve students' physical fitness and learning efficiency, while also fostering their health awareness and lifestyle habits.

[0003] Currently, the headrest on the student lunch break chair can only be moved to the top and bottom ends, and there is no locking device, which causes the headrest to shift when the student lies on it and turns over. In addition, the sliding part of the headrest is worn after long-term use, and when the headrest is placed at the top, it will fall freely.

[0004] Therefore, it is necessary to provide a lunch break student chair to limit the headrest to solve the above problems. Summary of the Invention

[0005] Based on the above problems existing in the prior art, the purpose of the present invention is to provide a lunch break student chair to solve the problems raised in the above background technology.

[0006] The technical solution adopted by the present application to solve the technical problem is: a lunch break student chair, comprising a frame assembly, a seat cushion, a backrest assembly and a headrest assembly, wherein the seat cushion is mounted on the top of the frame assembly, the backrest assembly is slidably connected to the frame assembly, and the headrest assembly is slidably connected to the backrest assembly;

[0007] The headrest assembly includes a connecting plate, one side of which is rotatably connected to the headrest, and one side of which is threadedly connected to a connecting back plate, a positioning device is provided between the connecting plate and the connecting back plate, and the connecting plate and the connecting back plate slide on a slide bar;

[0008] The positioning device includes a trigger device and a clamping device. The trigger device is installed in the connecting plate. The clamping device is arranged between the connecting plate and the connecting back plate and in the sliding groove. The trigger device is directly above the clamping device.

[0009] Furthermore, the frame assembly includes chair legs and a crossbeam, the crossbeam is fixedly connected to the top of the chair legs, and the two sides of the crossbeam are detachably connected to side panels, one of which is provided with a switch, one end of the side panel is rotatably connected to the footrest, and the other end of the side panel is rotatably connected to the backrest panel, and the top of the backrest panel is slidably connected to the backrest slide.

[0010] Furthermore, a connecting rod is provided between the backrest plate and the footrest, a cylinder is provided between the connecting rods, and one end of the cylinder is rotatably connected to the crossbeam.

[0011] Furthermore, the backrest assembly includes a backrest, an opening is provided in the middle of the backrest, armrests are rotatably connected to both sides of the backrest, and the backrest and the backrest slide are threadedly connected.

[0012] Furthermore, two slide bars are provided in the opening, both ends of the slide bars are fixedly connected to the backrest, a slide groove is formed between the slide bars, a plurality of positioning holes are opened on the slide bars, and the headrest assembly slides in the middle of the opening along the slide bars.

[0013] Furthermore, the trigger device includes a pressure block, a spring, a limiting ring, and a triangular block. The pressure block is slidably connected to the top of the connecting plate, the limiting ring is fixedly connected to the bottom of the connecting plate, the spring is arranged between the pressure block and the limiting ring and inside the connecting plate, and one end of the pressure block passes through the limiting ring and is fixedly connected to the triangular block.

[0014] Furthermore, the clamping device includes a protective shell, a connecting block, an extension bar, a boss, and a tension spring. The top of the protective shell is fixedly connected to the connecting plate and the bottom is fixedly connected to the connecting back plate. Two outlets are opened on one side of the protective shell.

[0015] The connecting block is fixedly connected to the inner wall of the short side of one side of the protective shell and is between the outlets;

[0016] The extension bar is rotatably connected to the protective shell, a portion of the extension bar is located inside the protective shell, and a portion is located outside the protective shell, and a shaft is provided in the outlet;

[0017] The boss is fixedly connected to one end of the extension bar, the boss is outside the protective shell, and the diameter of the boss matches the positioning hole;

[0018] One end of the tension spring is fixedly connected to the connecting block, and the other end of the tension spring is fixedly connected to the extension bar. The tension spring is inside the protective shell.

[0019] Furthermore, a rounded corner portion is provided on one side of the extension strip, and the rounded corner portions of the two extension strips fit together and are located directly below the triangular block.

[0020] The beneficial effects of the present application are as follows: the present application provides a lunch break student chair, which can connect the backrest and the footrest by providing a cylinder and a connecting rod. When the backrest is moved backward, the footrest is automatically raised, and when the backrest is moved forward, the footrest is automatically retracted, making the student chair more convenient to use; the device is provided with a positioning device, which can fix the headrest on the slide bar to prevent the headrest from moving at will, and solves the technical problem that the headrest on the current student lunch break chair can only move to the top and bottom ends when moving, and there is no locking device, which causes the student to lie on the headrest and the headrest to shift when turning over, and the sliding part of the headrest is worn out during long-term use, and when the headrest is placed at the top, it will fall freely.

[0021] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0023] In the attached figure:

[0024] Figure 1 This is an overall schematic diagram of this application;

[0025] Figure 2 This is a front view of the frame assembly of this application;

[0026] Figure 3 This is a schematic diagram of the back of the frame assembly of this application;

[0027] Figure 4 A schematic diagram of the backrest assembly of this application;

[0028] Figure 5 For this application Figure 4 Enlarged schematic diagram of area A in the middle;

[0029] Figure 6 This is a front view of the headrest assembly of the present application;

[0030] Figure 7 This is a schematic diagram of the back of the headrest assembly of this application;

[0031] Figure 8 This is a schematic diagram of the positioning device of this application;

[0032] Figure 9 A schematic diagram of the trigger device of this application;

[0033] Figure 10 The clamping device of this application is intended;

[0034] Among them, the reference numerals in the figures are:

[0035] 1. Frame assembly; 2. Seat cushion; 3. Backrest assembly; 4. Headrest assembly; 5. Chair leg; 51. Crossbeam; 6. Side panel; 7. Switch; 8. Cylinder; 9. Backrest board; 91. Backrest slide plate; 10. Footrest; 11. Connecting rod; 12. Backrest; 121. Opening; 122. Slide bar; 1221. Slide groove; 1222. Positioning hole; 13. Armrest; 14. Connecting plate; 141. Connecting back plate; 15. Positioning device; 16. Trigger device; 161. Pressure block; 162. Spring; 163. Limiting ring; 164. Triangle block; 17. Clamping device; 171. Protective shell; 1711. Exit; 172. Connecting block; 173. Extension bar; 1731. Fillet; 174. Boss; 175. Tension spring; 18. Headrest. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0038] like Figure 1-10 As shown, the present application provides a technical solution: a lunch break student chair, comprising a frame assembly 1, a seat cushion 2, a backrest assembly 3 and a headrest assembly 4, the seat cushion 2 being mounted on the top of the frame assembly 1, the backrest assembly 3 being slidingly connected to the frame assembly 1, and the headrest assembly 4 being slidingly connected to the backrest assembly 3, and the headrest assembly 4 can be adjusted to a suitable position and fixed according to the student's sitting posture.

[0039] like Figure 2 、 3 As shown, the frame assembly 1 includes a chair leg 5 and a crossbeam 51. The crossbeam 51 is fixedly connected to the top of the chair leg 5. The two sides of the crossbeam 51 are detachably connected to the side panels 6. A switch 7 is provided on one side of the side panel 6. One end of the side panel 6 is rotatably connected to the footrest 10, and the other end of the side panel 6 is rotatably connected to the backrest panel 9. The top of the backrest panel 9 is slidably connected to the backrest slide 91.

[0040] A connecting rod 11 is provided between the backrest plate 9 and the footrest 10, and a cylinder 8 is provided between the connecting rod 11. One end of the cylinder 8 is rotatably connected to the crossbeam 51. When the cylinder 8 is compressed, the connecting rod 11 can drive the backrest plate 9 and the footrest 10 to rotate synchronously.

[0041] like Figure 4 As shown, the backrest assembly 3 includes a backrest 12, an opening 121 is opened in the middle of the backrest 12, armrests 13 are rotatably connected on both sides of the backrest 12, the backrest 12 and the backrest slide 91 are threadedly connected, and the backrest slide 91 can slide on the backrest board.

[0042] like Figure 5 As shown, two slide bars 122 are provided in the opening 121 , both ends of the slide bars 122 are fixedly connected to the backrest 12 , a slide groove 1221 is formed between the slide bars 122 , a plurality of positioning holes 1222 are opened on the slide bars 122 , and the headrest assembly 4 slides in the middle of the opening 121 along the slide bars 122 .

[0043] like Figure 6 、 7 As shown, the headrest assembly 4 includes a connecting plate 14, one side of the connecting plate 14 is rotatably connected to the headrest 18, one side of the connecting plate 14 is threadedly connected to a connecting back plate 141, a positioning device 15 is provided between the connecting plate 14 and the connecting back plate 141, and the connecting plate 14 and the connecting back plate 141 slide on the slide bar 122.

[0044] like Figure 8 、 9 As shown in Figure 10, the positioning device 15 includes a trigger device 16 and a clamping device 17. The trigger device 16 is installed in the connecting plate 14. The clamping device 17 is arranged between the connecting plate 14 and the connecting back plate 141 and in the slide groove 1221. The trigger device 16 is directly above the clamping device 17.

[0045] The trigger device 16 includes a pressure block 161, a spring 162, a limiting ring 163, and a triangular block 164. The pressure block 161 is slidably connected to the top of the connecting plate 14, the limiting ring 163 is fixedly connected to the bottom of the connecting plate 14, and the spring 162 is arranged between the pressure block 161 and the limiting ring 163 and inside the connecting plate 14. One end of the pressure block 161 passes through the limiting ring 163 and is fixedly connected to the triangular block 164. When the pressure block 161 is pressed, the pressure block 161 compresses the spring 162 to generate elastic force, driving the triangular block 164 to move downward.

[0046] The clamping device 17 includes a protective shell 171, a connecting block 172, an extension bar 173, a boss 174, and a tension spring 175. The top of the protective shell 171 is fixedly connected to the connecting plate 14 and the bottom is fixedly connected to the connecting back plate 141. Two outlets 1711 are opened on one side of the protective shell 171.

[0047] The connecting block 172 is fixedly connected to the inner wall of a short side of the protective shell 171 and is located between the outlets 1711 .

[0048] The extension bar 173 is rotatably connected to the protective shell 171 . A portion of the extension bar 173 is located inside the protective shell 171 , and a portion is located outside the protective shell 171 . An axis is provided inside the outlet 1711 , and the extension bar 173 rotates around the axis of the outlet 1711 .

[0049] The boss 174 is fixedly connected to one end of the extension bar 173 . The boss 174 is outside the protective shell 171 . The diameter of the boss 174 matches the positioning hole 1222 , and the boss 174 can be inserted into the positioning hole 1222 .

[0050] One end of the tension spring 175 is fixedly connected to the connecting block 172 , and the other end of the tension spring 175 is fixedly connected to the extension bar 173 . The tension spring 175 is inside the protective shell 171 .

[0051] A rounded portion 1731 is formed on one side of the extension strip 173 . Due to the elastic force of the tension spring 175 , the rounded portions 1731 of the two extension strips 173 fit together and are located directly below the triangular block 164 .

[0052] Example 1: Working Principle of Lunch Break Student Chair

[0053] Specifically, the student sits on the nap chair, opens the switch 7 by hand, unlocks the cylinder 8, leans back on the backrest 12, adjusts the angle of the backrest board 9 backward, drives the connecting rod 11 to move forward, compresses the cylinder 8, and moves the connecting rod 11 forward to drive the footrest 10 to rotate upward. When the appropriate position is reached, release the switch 7, fix the angle of the backrest board 9 and the footrest 10, move the backrest 12 up and down, and the backrest slide 91 drives the backrest 12 to slide on the backrest board 9. The position of the backrest 12 is preliminarily adjusted. At this time, the student can lie on the chair to sleep.

[0054] The device can connect the backrest 12 and the footrest 10 by being provided with a cylinder 8 and a connecting rod 11. When the backrest 12 moves backward, the footrest 10 is automatically raised, and when the backrest 12 moves forward, the footrest 10 is automatically retracted, making the student chair more convenient to use.

[0055] Example 2: When the lunch break student chair is converted from a lying position to a sitting position, the headrest 18 can be moved to the waist to form a waist-lifting

[0056] Specifically, the switch 7 is opened, the cylinder 8 is unlocked, the backrest 12 moves forward, the footrest 10 is retracted, and the entire student chair is in a sitting position. The pressure block 161 is pressed, the triangular block 164 moves downward, the triangular block 164 contacts the rounded corner 1731, the angle formed by the extension bar 173 decreases, and the boss 174 moves out of the positioning hole 1222. The other hand moves the headrest 18, and the headrest 18 slides on the slide bar 122. When the headrest 18 is placed at approximately the waist position, the pressure block 161 is released, and the pressure block 161 rebounds under the influence of the spring 162, and the triangular block 164 rises and does not contact the extension bar 173. The extension strips 173 are pulled by the tension springs 175, causing the angles between the extension strips 173 to increase until the rounded corners 1731 on the two extension strips 173 touch each other. At this time, the protrusions 174 move to both sides and can be stuck in the corresponding positioning holes 1222. At this time, the headrest assembly 4 is stuck on the slide bar 122 and cannot move. Then the headrest 18 is rotated 180 degrees, and the pressure block 161 is placed under the headrest 18 to prevent accidental touch.

[0057] It should be noted that after adjusting the headrest 18 into place and releasing the pressure block 161, the boss 174 is on the slide bar 122 and is not in the positioning hole 1222. At this time, the headrest 18 is moved up and down and forward and backward. When the boss 174 reaches the positioning hole 1222, it is affected by the elastic force of the tension spring 175, and the tension spring 175 drives the extension bar 173 to rotate, and the boss 174 is stuck in the positioning hole 1222.

[0058] The device is provided with a positioning device 15, which can fix the headrest 18 on the slide 122 to prevent the headrest 18 from moving at will. This solves the technical problem that the headrest 18 on the student lunch break chair can only move to the top and bottom ends when it is moved, and there is no locking device, which causes the headrest 18 to shift when the student lies on the headrest 18 and turns over. In addition, the sliding part of the headrest 18 is worn after long-term use, and the headrest 18 will fall freely when it is placed at the top.

[0059] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A lunch break student chair, comprising a frame assembly (1), a seat cushion (2), a backrest assembly (3) and a headrest assembly (4), characterized in that: The seat cushion (2) is mounted on the top of the frame assembly (1), the backrest assembly (3) is slidably connected to the frame assembly (1), and the headrest assembly (4) is slidably connected to the backrest assembly (3); The headrest assembly (4) includes a connecting plate (14), one side of the connecting plate (14) is rotatably connected to a headrest (18), one side of the connecting plate (14) is threadedly connected to a connecting back plate (141), a positioning device (15) is provided between the connecting plate (14) and the connecting back plate (141), and the connecting plate (14) and the connecting back plate (141) slide on a slide bar (122); The positioning device (15) includes a trigger device (16) and a clamping device (17), wherein the trigger device (16) is installed in the connecting plate (14), and the clamping device (17) is arranged between the connecting plate (14) and the connecting back plate (141) and in the sliding groove (1221), and the trigger device (16) is directly above the clamping device (17).

2. A lunch break student chair according to claim 1, characterized in that: The frame assembly (1) comprises a chair leg (5) and a crossbeam (51), wherein the crossbeam (51) is fixedly connected to the top of the chair leg (5), and the two sides of the crossbeam (51) are detachably connected to side panels (6), wherein a switch (7) is provided on one side of the side panel (6), one end of the side panel (6) is rotatably connected to a footrest (10), and the other end of the side panel (6) is rotatably connected to a backrest panel (9), and the top of the backrest panel (9) is slidably connected to a backrest slide (91).

3. A lunch break student chair according to claim 2, characterized in that: A connecting rod (11) is provided between the backrest plate (9) and the footrest (10), a cylinder (8) is provided between the connecting rod (11), and one end of the cylinder (8) is rotatably connected to the crossbeam (51).

4. A lunch break student chair according to claim 1, characterized in that: The backrest assembly (3) includes a backrest (12), an opening (121) is provided in the middle of the backrest (12), armrests (13) are rotatably connected to both sides of the backrest (12), and the backrest (12) and the backrest slide plate (91) are threadedly connected.

5. A lunch break student chair according to claim 4, characterized in that: Two slide bars (122) are provided in the opening (121), the two ends of the slide bars (122) are fixedly connected to the backrest (12), a slide groove (1221) is formed between the slide bars (122), a plurality of positioning holes (1222) are provided on the slide bars (122), and the headrest assembly (4) slides in the middle of the opening (121) along the slide bars (122).

6. The lunch break student chair according to claim 1, characterized in that: The trigger device (16) comprises a pressure block (161), a spring (162), a limiting ring (163), and a triangular block (164); the pressure block (161) is slidably connected to the top of the connecting plate (14); the limiting ring (163) is fixedly connected to the bottom of the connecting plate (14); the spring (162) is arranged between the pressure block (161) and the limiting ring (163) and inside the connecting plate (14); one end of the pressure block (161) passes through the limiting ring (163) and is fixedly connected to the triangular block (164).

7. The lunch break student chair according to claim 1, characterized in that: The clamping device (17) comprises a protective shell (171), a connecting block (172), an extension bar (173), a protruding column (174), and a tension spring (175); the top of the protective shell (171) is fixedly connected to the connecting plate (14) and the bottom is fixedly connected to the connecting back plate (141); and two outlets (1711) are provided on one side of the protective shell (171); The connecting block (172) is fixedly connected to the inner wall of the short side of one side of the protective shell (171) and is located between the outlets (1711); The extension bar (173) is rotatably connected to the protective shell (171), a portion of the extension bar (173) is located inside the protective shell (171), and a portion is located outside the protective shell (171), and a shaft is provided in the outlet (1711); The boss (174) is fixedly connected to one end of the extension bar (173), the boss (174) is outside the protective shell (171), and the diameter of the boss (174) matches the positioning hole (1222); One end of the tension spring (175) is fixedly connected to the connecting block (172), and the other end of the tension spring (175) is fixedly connected to the extension bar (173). The tension spring (175) is inside the protective shell (171).

8. The lunch break student chair according to claim 7, characterized in that: A rounded corner portion (1731) is provided on one side of the extension strip (173), and the rounded corner portions (1731) of the two extension strips (173) fit together and are located directly below the triangular block (164).

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