Angle-adjustable learning seat

Abstract

The utility model discloses an angle-adjustable learning chair, which comprises a chair seat and a chair back arranged on one side of the chair seat, and further comprises a speed limiting assembly arranged in two adjusting cavities and used for limiting the speed of the return force of a spiral spring piece, and the speed limiting assembly comprises a speed limiting pipe fixedly connected to the inner wall of one side, far away from the chair back, of each adjusting cavity. The speed limiting pipe is filled with damping liquid, and the speed limiting pipe and the rotating shaft are concentrically arranged. According to the utility model, through the arrangement of the speed limiting assembly, the rotation of the rotating shaft is subjected to damping limitation, so that the damping speed limiting for reducing the use angle of the chair back is further realized, the impact force between the chair back and the back of a user is reduced, and the discomfort of the user caused by overlarge impact force is avoided; therefore, the safety of adjusting the chair back of the learning chair is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of learning seats, in particular to a learning seat with adjustable angle. Background Art

[0002] When using a learning seat, in order to improve the comfort of use, the use angle of the backrest of the learning seat will be adjusted. During the adjustment process, by pressing the adjustment button, the limit of the backrest is released. If it is necessary to adjust the angle of the backrest to become smaller, just make your back not touch the backrest, and the backrest can drive the backrest to rotate closer to you under the action of the spiral spring piece, so as to realize the adjustment of the smaller angle of the backrest. If it is necessary to adjust the angle of the backrest to become larger, make your back touch the backrest and squeeze and push the backrest. When the backrest is pushed to the appropriate angle, the pressing of the adjustment button can be released, so that the limit clamping plate is clamped into the card slot, and the backrest with the adjusted angle can be limited.

[0003] When the backrest rotates closer to the user's back under the action of the spiral spring piece to realize the adjustment of the smaller angle, due to the difficulty in controlling the reset elastic force of the spiral spring piece, the backrest will quickly approach the user's back under the elastic action, thus causing an impact on the user's back. Especially during the process of adjusting the angle of the backrest from a large angle to a small angle, the deformation amount of the spiral spring piece is larger, and the impact force on the user's back becomes larger, which is likely to cause discomfort to the user and further reduce the safety of adjusting the backrest of the learning seat.

[0004] Therefore, there is an urgent need for a learning seat with adjustable angle to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a learning seat with adjustable angle to solve the problem that the back of the user is easily impacted when the use angle of the learning seat is adjusted to become smaller as mentioned in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A learning seat with adjustable angle, including a seat and a backrest arranged on one side of the seat. Fixing plates are fixedly connected to both sides of the seat, and the backrest is connected to the opposite sides of the two fixing plates through a rotating shaft. An armrest is provided on the side of the seat away from the fixing plate. The two armrests are provided with an adjusting component for adjusting the use angle of the backrest. The adjusting component includes an adjusting cavity opened on the armrest. A spiral spring piece is provided through a fixed tube on the inner wall of the adjusting cavity close to the backrest. A snap ring is fixedly connected to the side wall of the rotating shaft located inside the adjusting cavity. A plurality of card slots are opened on the side wall of the snap ring. A clamping plate is provided in the adjusting cavity through an adjusting plate. The side of the adjusting plate close to the ground is connected with a push plate through two mounting plates. A speed-limiting component is also provided in the two adjusting cavities for limiting the return force of the spiral spring piece;

[0007] The speed-limiting component includes a speed-limiting tube fixedly connected to the inner wall of the adjusting cavity away from the backrest. The speed-limiting tube is filled with damping fluid, and the speed-limiting tube is concentrically arranged with the rotating shaft.

[0008] A speed-limiting plate is fixedly connected to the side wall of the rotating shaft located inside the speed-limiting tube. The end of the speed-limiting plate away from the rotating shaft abuts against the inner wall of the speed-limiting tube. Two speed-limiting holes are opened on the side wall of the speed-limiting plate.

[0009] A baffle is fixedly connected to the inner wall of the speed-limiting tube. The end of the baffle close to the rotating shaft abuts against the side wall of the rotating shaft. The baffle and the speed-limiting plate are arranged at 180 degrees.

[0010] The speed-limiting plate is provided with a limiting component for unidirectionally limiting the flow rate of the damping fluid in the speed-limiting tube. The limiting component includes a limiting tube fixedly connected to the side of the speed-limiting plate close to the rotation direction of the seat. The limiting tube is concentrically arranged with the speed-limiting hole. The side of the limiting tube away from the speed-limiting plate is connected with a limiting plate through a connecting component. A limiting hole is opened on the limiting plate, and the diameter of the limiting hole is smaller than that of the speed-limiting hole.

[0011] The connecting component includes a first connecting plate fixedly connected to the side wall of the limiting tube. Both sides of the first connecting plate are connected with a second connecting plate through a connecting shaft. One end of the two second connecting plates is connected to the limiting plate. The connecting shaft is provided with an extrusion component for extruding the limiting plate.

[0012] The extrusion component includes an extrusion plate arranged at one end of the connecting shaft. A torsion spring is sleeved on the side wall of the connecting shaft. The two ends of the torsion spring are respectively connected to the extrusion plate and the second connecting plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] Through the setting of the speed limit component, the present utility model forms a damping mechanism for the rotation of the speed limit plate under the extrusion of the damping liquid by the speed limit plate and the limitation of the extrusion flow rate of the damping liquid by the limiting component, thereby dampingly restricting the rotation of the rotating shaft, further realizing the damping speed limit for reducing the use angle of the chair back, reducing the impact force between the chair back and the user's back, avoiding discomfort of the user caused by excessive impact force, and thus improving the safety of adjusting the chair back of the learning chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the structure of the adjusting component of the present utility model;

[0017] Figure 3 is a schematic diagram of the internal structure of the adjusting component of the present utility model;

[0018] Figure 4 is a schematic diagram of the internal structure of the limiting component of the present utility model;

[0019] Figure 5 is a schematic diagram of the internal structure of the speed limit component of the present utility model;

[0020] Figure 6 is Figure 4 the enlarged view at A in

[0021] In the figure: 101, seat; 102, chair back; 103, fixing plate; 104, armrest; 105, rotating shaft; 106, fixing tube; 107, adjusting cavity; 108, spiral spring piece; 109, snap ring; 110, adjusting plate; 111, clamping plate; 112, mounting plate; 113, pushing plate; 201, speed limit tube; 202, speed limit plate; 203, speed limit hole; 204, baffle; 301, limiting tube; 302, limiting plate; 303, limiting hole; 401, first connecting plate; 402, connecting shaft; 403, second connecting plate; 501, pressing plate; 502, torsion spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following is a specific introduction to the present utility model in combination with the accompanying drawings and specific embodiments.

[0023] Embodiment 1

[0024] Please refer to Figures 1-6, An angle-adjustable learning seat shown in the figure, including a seat 101 and a backrest 102 arranged on one side of the seat 101. Fixed plates 103 are fixedly connected to both sides of the seat 101. The backrest 102 is connected to the opposite sides of the two fixed plates 103 through a rotating shaft 105. An armrest 104 is provided on the side of the seat 101 away from the fixed plate 103. An adjusting component for adjusting the use angle of the backrest 102 is provided on the two armrests 104. The adjusting component includes an adjusting cavity 107 opened on the armrest 104. A spiral spring piece 108 is provided on the inner wall of the adjusting cavity 107 close to the backrest 102 through a fixed tube 106. A snap ring 109 is fixedly connected to the side wall of the rotating shaft 105 located inside the adjusting cavity 107. A plurality of card slots are opened on the side wall of the snap ring 109. A clamping plate 111 is provided in the adjusting cavity 107 through an adjusting plate 110. One side of the adjusting plate 110 close to the ground is connected to a pushing plate 113 through two mounting plates 112. A speed-limiting component for limiting the return force of the spiral spring piece 108 is also provided in the two adjusting cavities 107;

[0025] The speed-limiting component includes a speed-limiting tube 201 fixedly connected to the inner wall of the adjusting cavity 107 away from the backrest 102. The speed-limiting tube 201 is filled with damping liquid and is concentrically arranged with the rotating shaft 105;

[0026] It should be noted here that: through the setting of the speed-limiting component, under the extrusion of the damping liquid by the speed-limiting plate 202 and the limiting effect of the limiting component on the extrusion flow rate of the damping liquid, a damping mechanism is formed for the rotation of the speed-limiting plate 202, thereby damping and restricting the rotation of the rotating shaft 105. Further, the damping speed limit for reducing the use angle of the backrest 102 is realized, reducing the impact force between the backrest 102 and the user's back, avoiding discomfort to the user caused by excessive impact force, and thus improving the safety of adjusting the backrest 102 of the learning seat.

[0027] It is worth noting that: the specific structure and principle of the angle adjustment component of the learning seat are existing, and only a brief description is given here.

[0028] Please refer to Figure 4 and Figure 5 , A speed-limiting plate 202 is fixedly connected to the side wall of the rotating shaft 105 located inside the speed-limiting tube 201 in the figure. One end of the speed-limiting plate 202 away from the rotating shaft 105 abuts against the inner wall of the speed-limiting tube 201. Two speed-limiting holes 203 are opened on the side wall of the speed-limiting plate 202;

[0029] It should be noted here that: through the setting of the speed-limiting holes 203, it is convenient for the damping liquid to pass through the speed-limiting holes 203, thereby forming a damping mechanism.

[0030] Please refer to Figure 4 and Figure 5, a baffle 204 is fixedly connected to the inner wall of the speed limit tube 201 in the figure. One end of the baffle 204 close to the rotating shaft 105 abuts against the side wall of the rotating shaft 105, and the baffle 204 and the speed limit plate 202 are arranged at 180 degrees;

[0031] It should be noted here that: through the setting of the baffle 204, it is convenient to block the damping liquid, so that the speed limit plate 202 can extrude the damping liquid.

[0032] Working principle: When adjusting the use angle of the chair back 102, first push the push plate 113 to drive the clamping plate 111 on the adjusting plate 110 to disengage from the clamping groove on the clamping ring 109, thereby releasing the adjustment limit of the angle of the chair back 102. When it is necessary to adjust the angle of the chair back 102 to become smaller, just make your back not abut against the chair back 102, and the chair back 102 can be driven by the spiral spring piece 108 to rotate closer to yourself, thus realizing the adjustment of the angle of the chair back 102 to become smaller. If it is necessary to adjust the angle of the chair back 102 to become larger, make your back abut against the chair back 102 and squeeze and push the chair back 102. When the chair back 102 is pushed to the appropriate angle, the pressing on the adjusting plate 110 can be released, so that the limit clamping plate 111 is clamped into the clamping groove, and the chair back 102 with the adjusted angle can be limited;

[0033] And when adjusting the use angle of the chair back 102 to become smaller, it will drive the speed limit plate 202 on the rotating shaft 105 to rotate in the speed limit tube 201. Thus, under the extrusion of the damping liquid in the speed limit tube 201 by the speed limit plate 202 and the limitation of the extrusion flow rate of the damping liquid by the limiting component, a damping mechanism is formed for the rotation of the speed limit plate 202, thereby damping and limiting the rotation of the rotating shaft 105. Further, the damping speed limit for adjusting the use angle of the chair back 102 to become smaller is realized, reducing the impact force between the chair back 102 and the user's back, avoiding discomfort caused by excessive impact force, and thus improving the safety of adjusting the chair back 102 of the study chair.

[0034] Embodiment 2

[0035] Please refer to Figure 4 and Figure 6 , this embodiment further describes Embodiment 1. The speed limit plate 202 in the figure is provided with a limiting component for unidirectionally limiting the flow rate of the damping liquid in the speed limit tube 201. The limiting component includes a limiting tube 301 fixedly connected to one side of the speed limit plate 202 close to the rotation direction of the chair seat 101. The limiting tube 301 is concentric with the speed limit hole 203. One side of the limiting tube 301 away from the speed limit plate 202 is connected with a limiting plate 302 through a connecting component. The limiting plate 302 is provided with a limiting hole 303, and the diameter of the limiting hole 303 is smaller than that of the speed limit hole 203;

[0036] It should be noted here that: by setting the components, during the process of rotating the backrest 102 away from the seat 101, that is, during the process of increasing the angle, the rotating shaft 105 will drive the speed-limiting plate 202 to rotate within the speed-limiting tube 201. And during the process of the speed-limiting plate 202 rotating away from the seat 101, the damping liquid within the speed-limiting tube 201 will be squeezed. Under the squeezing action, the damping liquid will be pushed to pass through the speed-limiting holes 203, and the limiting plate 302 will be pushed to move away from the speed-limiting plate 202, thereby reducing the damping effect when adjusting the use angle of the backrest 102 to increase;

[0037] When it is necessary to adjust the use angle of the backrest 102 to decrease, under the elastic action of the spiral spring piece 108, the rotating shaft 105 will rotate closer to the seat 101, thereby further driving the speed-limiting plate 202 to rotate in the reverse direction within the speed-limiting tube 201. And under the action of the damping liquid pushing and squeezing components, the limiting plate 302 will abut against the side wall of the limiting tube 301, so that the damping liquid can only pass through the limiting holes 303. At the same time, since the diameter of the limiting holes 303 is smaller than the diameter of the speed-limiting holes 203, the damping buffer mechanism is increased, and further the damping limit for the backrest 102 to rotate closer to the seat 101 is improved.

[0038] Please refer to Figure 4 and Figure 6 As shown, the connecting component in the figure includes a first connecting plate 401 fixedly connected to the side wall of the limiting tube 301. Both sides of the first connecting plate 401 are connected with a second connecting plate 403 through a connecting shaft 402. One end of the two second connecting plates 403 is connected to the limiting plate 302, and the connecting shaft 402 is provided with a squeezing component for squeezing the limiting plate 302;

[0039] It should be noted here that: through the setting of the connecting component, the limiting plate 302 can only rotate in one direction, that is, during the process of the backrest 102 rotating away from the seat 101.

[0040] Please refer to Figure 4 and Figure 6 As shown, the squeezing component in the figure includes a squeezing plate 501 arranged at one end of the connecting shaft 402. A torsion spring 502 is sleeved on the side wall of the connecting shaft, and both ends of the torsion spring 502 are respectively connected to the squeezing plate 501 and the second connecting plate 403;

[0041] It should be noted here that: through the setting of the squeezing component, the elastic force of the torsion spring 502 is used to facilitate driving the limiting plate 302 to reset.

[0042] In the description of the present utility model, it should be understood that: the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; in addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present utility model, it should be noted that: unless otherwise clearly specified and defined, the terms "installation", "connection", "setting", "formation" should be understood in a broad sense; for example, it can be a fixed connection and setting, or a detachable connection and setting, or an integrated structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and can also be the communication inside two elements; for those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] In the description of the present utility model, the reference to terms such as "embodiment", "specific example" or "practical application", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment are included in at least one embodiment or example of the present utility model; the schematic expressions of the above terms do not necessarily refer to the same embodiment or example, and moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0045] The above embodiments are only used to illustrate the technical solutions of the present utility model. Those skilled in the art should understand that the above embodiments do not limit the present utility model in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present utility model.

Claims

1. An angle-adjustable learning seat, comprising: a seat (101) and a backrest (102) arranged on one side of the seat (101), fixed plates (103) are fixedly connected to both sides of the seat (101), and the backrest (102) is connected to the opposite sides of the two fixed plates (103) through a rotating shaft (105). An armrest (104) is arranged on the side of the seat (101) away from the fixed plate (103). An adjusting component for adjusting the use angle of the backrest (102) is arranged on the two armrests (104). The adjusting component includes an adjusting cavity (107) opened on the armrest (104). A spiral spring piece (108) is arranged on the inner wall of the adjusting cavity (107) close to the backrest (102) through a fixed pipe (106). A snap ring (109) is fixedly connected to the side wall of the rotating shaft (105) located inside the adjusting cavity (107). A plurality of card slots are opened on the side wall of the snap ring (109). A clamping plate (111) is arranged in the adjusting cavity (107) through an adjusting plate (110). The side of the adjusting plate (110) close to the ground is connected to a pushing plate (113) through two mounting plates (112); It is characterized in that it further includes: a speed-limiting component arranged in the two adjusting cavities (107) for limiting the return force of the spiral spring piece (108); The speed-limiting component includes a speed-limiting pipe (201) fixedly connected to the inner wall of the adjusting cavity (107) away from the backrest (102). The speed-limiting pipe (201) is filled with damping liquid, and the speed-limiting pipe (201) is concentrically arranged with the rotating shaft (105).

2. The adjustable learning seat according to claim 1, characterized in that: A speed-limiting plate (202) is fixedly connected to the side wall of the rotating shaft (105) located inside the speed-limiting pipe (201). One end of the speed-limiting plate (202) away from the rotating shaft (105) abuts against the inner wall of the speed-limiting pipe (201). Two speed-limiting holes (203) are opened on the side wall of the speed-limiting plate (202).

3. The adjustable learning seat according to claim 1, wherein: A baffle (204) is fixedly connected to the inner wall of the speed-limiting pipe (201). One end of the baffle (204) close to the rotating shaft (105) abuts against the side wall of the rotating shaft (105). The baffle (204) and the speed-limiting plate (202) are arranged at 180 degrees.

4. The adjustable learning seat according to claim 2, characterized in that: The speed-limiting plate (202) is provided with a limiting component for unidirectionally limiting the flow rate of the damping liquid in the speed-limiting pipe (201). The limiting component includes a limiting pipe (301) fixedly connected to the side of the speed-limiting plate (202) close to the rotating direction of the seat (101). The limiting pipe (301) is concentrically arranged with the speed-limiting hole (203). A limiting plate (302) is connected to the side of the limiting pipe (301) away from the speed-limiting plate (202) through a connecting component. The limiting plate (302) is provided with a limiting hole (303), and the diameter of the limiting hole (303) is smaller than that of the speed-limiting hole (203).

5. The adjustable learning seat according to claim 4, characterized in that: The connecting component includes a first connecting plate (401) fixedly connected to the side wall of the limiting tube (301). Both sides of the first connecting plate (401) are connected with second connecting plates (403) through connecting shafts (402). One ends of the two second connecting plates (403) are connected to the limiting plate (302). The connecting shaft (402) is provided with a pressing component for pressing the limiting plate (302).

6. The adjustable learning seat according to claim 5, wherein: The pressing component includes a pressing plate (501) arranged at one end of the connecting shaft (402). A torsion spring (502) is sleeved on the side wall of the connecting shaft (402). Two ends of the torsion spring (502) are respectively connected to the pressing plate (501) and the second connecting plate (403).

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