Sectional arc triangular type foldable multifunctional learning chair

Abstract

The utility model relates to an arc triangular foldable multifunctional learning chair which comprises a chair frame, a pedal mounted on the chair frame, a chair seat and at least one chair back, the chair frame comprises a left group of front height adjusting rods and a right group of rear angle adjusting rods which are assembled in an arc triangular manner, and angle adjusting suites are arranged between the front height adjusting rods and the rear angle adjusting rods to connect the angle relationship between the front height adjusting rods and the rear angle adjusting rods; the left and right ends of the pedal, the chair seat and the chair back are respectively provided with a height adjusting suite, and the front height adjusting rod is provided with a plurality of adjusting holes matched with the pedal, the chair seat and the chair back to adjust the height; the front height adjusting rod and the rear angle adjusting rod are connected and adjusted through the joint upper connector, the joint upper head and the joint lower head which are matched in a staggered and crossed mode, the stop notch and the stop screw are matched to adjust the opening and folding states of the rear angle adjusting rod, and the design is ingenious; meanwhile, the angles among the pedal, the chair seat, the chair back and the ground are locked through the stop screws, so that the chair is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to an arc-segment triangular foldable multifunctional study chair. Background Art

[0002] As a seat for accompanying children in learning, the study chair plays a very important role in the growth and learning process of children. The height of the seat needs to be adjustable to meet the requirements of children of different heights and body types for sitting height. If the sitting height cannot be adjusted to the appropriate range, it is easy that the backrest of the study chair cannot fit the child's back during use, lacking support for the child's back, and the child is prone to hunchback after sitting for a long time, which will further affect the child's learning and healthy growth.

[0003] Among the existing children's study chairs, many have adjustable heights for the seat, backrest and footrest. However, these types of seats are all complex in structure, making them heavy and inconvenient to store, and taking up a large amount of space during transportation. Therefore, it has become an urgent problem in the industry to make the seat, backrest and footrest of the children's chair adjustable in height and convenient for transportation. Summary of the Utility Model

[0004] To solve the above problems, the utility model provides an arc-segment triangular foldable multifunctional study chair.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an arc-segment triangular foldable multifunctional study chair, including a chair frame, a footrest, a seat and at least one backrest installed on the chair frame: the chair frame includes left and right groups of front height adjustment rods and rear angle adjustment rods assembled in an arc-segment triangular shape, and an angle adjustment kit is provided between the front height adjustment rods and the rear angle adjustment rods to connect the angular relationship between the front height adjustment rods and the rear angle adjustment rods; height adjustment kits are respectively provided at the left and right ends of the footrest, seat and backrest, and a number of adjustment holes for cooperating with the footrest, seat and backrest to adjust the height are provided on the front height adjustment rods, and the height adjustment kits are connected in cooperation with the adjustment holes.

[0006] Preferably, the angle adjustment kit is provided with a joint upper joint, a joint upper and lower head and a cover, and the joint upper joint and the joint upper and lower head are cross-matched in a staggered manner.

[0007] Preferably, the joint upper joint is provided with a fixing screw and an embedded nut, the embedded nut is fixedly connected with the joint upper joint, the cover is buckled on the joint upper joint, and the position relationship between the joint upper joint and the front height adjustment rod is restricted by the fixing screw.

[0008] Preferably, the joint upper and lower head is provided with an auxiliary support plate, a stop screw and a link screw. One end of the auxiliary support plate is fixedly connected with the joint upper and lower head, the other end of the auxiliary support plate is inserted into the angle adjustment kit, and the link screw penetrates through the joint upper joint and the joint upper and lower head.

[0009] Preferably, a positioning notch is provided on the auxiliary support plate. The positioning notch is U-shaped and cooperates with a positioning screw to lock the positional relationship between the auxiliary support plate and the upper joint of the joint.

[0010] Preferably, the upper and lower joints of the joint are connected to the rear angle adjustment rod by fixing screws. Preferably, the height adjustment kit is inserted into the adjustment hole to determine the positional relationship between the footrest, the seat, the backrest, and the front height adjustment rod.

[0011] The beneficial effects of the present utility model are as follows: The front height adjustment rod and the rear angle adjustment rod are connected by the upper joint of the joint and the upper and lower joints of the joint in a staggered cross-fit manner, and the positioning notch cooperates with the positioning screw to adjust the opening and folding states of the rear angle adjustment rod. The design is ingenious. At the same time, the angles between the footrest, the seat, the backrest and the ground are all locked by the positioning screws, which is convenient to use and has a wide range of practical applications. Description of the Drawings

[0012] Figure 1 It is the front view of a kind of arc-segment triangular foldable multi-functional study chair described above.

[0013] Figure 2 It is Figure 1 The sectional view taken along line A-A in

[0014] Figure 3 It is Figure 2 The partial enlarged view at B in

[0015] Figure 4 It is the state diagram of a kind of arc-segment triangular foldable multi-functional study chair described above, retaining the rear angle adjustment rod and the angle adjustment kit.

[0016] Figure 5 It is Figure 4 The partial enlarged view at C in

[0017] Figure 6 It is the three-dimensional view of a kind of arc-segment triangular foldable multi-functional study chair described above.

[0018] Figure 7 It is Figure 6 The partial enlarged view at D of a kind of arc-segment triangular foldable multi-functional study chair described above in

[0019] In the figure: 1. Seat; 2. Backrest, 21. Height adjustment kit; 3. Front height adjustment rod, 31. Adjustment hole; 4. Rear angle adjustment rod; 5. Footrest; 6. Angle adjustment kit, 61. Upper joint of the joint, 62. Upper and lower joints of the joint, 63. Cover, 64. Fixing screw; 7. Auxiliary support plate, 71. Positioning notch; 8. Positioning screw, 81. Embedded nut; 9. Linking screw. Detailed Implementation Manner

[0020] To make the technical solution of the present utility model clearer and more understandable, the present utility model will be further described below in conjunction with specific embodiments of the accompanying drawings; it should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0021] As Figures 1-7 shown, a kind of arc-segment triangular foldable multifunctional learning chair described in the present utility model includes a chair frame, a footrest 5, a seat 1 and at least one backrest 2 installed on the chair frame; the chair frame includes left and right groups of front height-adjusting rods 3 and rear angle-adjusting rods 4 assembled in an arc-segment triangular manner, and an angle-adjusting kit 6 is provided between the front height-adjusting rod 3 and the rear angle-adjusting rod 4 to connect the angular relationship between the front height-adjusting rod 3 and the rear angle-adjusting rod 4; height-adjusting kits 21 are respectively provided at the left and right ends of the footrest 5, the seat 1 and the backrest 2, and a number of adjusting holes 31 for cooperating with the footrest 5, the seat 1 and the backrest 2 to adjust the height are provided on the front height-adjusting rod 3, and the height-adjusting kit 21 is cooperatively connected with the adjusting hole 31.

[0022] In this embodiment, the angle-adjusting kit 6 is provided with a joint upper joint 61, a joint upper and lower joint 62 and a cover 63, and the joint upper joint 61 and the joint upper and lower joint 62 are cross-fitted in a staggered manner.

[0023] In this embodiment, the joint upper joint 61 is provided with a fixing screw 64 and an embedded nut 81, the embedded nut 81 is fixedly connected with the joint upper joint 61, the cover 63 is buckled on the joint upper joint 61, and the position relationship between the joint upper joint 61 and the front height-adjusting rod 3 is restricted by the fixing screw 64.

[0024] In this embodiment, the joint upper and lower joint 62 is provided with an auxiliary support plate 7, a stop screw 8 and a link screw 9. One end of the auxiliary support plate 7 is fixedly connected with the joint upper and lower joint 62, the other end of the auxiliary support plate 7 is inserted into the angle-adjusting kit 6, and the link screw 9 penetrates through the joint upper joint 61 and the joint upper and lower joint 62.

[0025] In this embodiment, the auxiliary support plate 7 is provided with a stop notch 71, the stop notch 71 is U-shaped, and the stop notch 71 cooperates with the stop screw 8 to lock the position relationship between the auxiliary support plate 7 and the joint upper joint 61.

[0026] In this embodiment, the joint upper and lower joint 62 is connected to the rear angle-adjusting rod 4 through a fixing screw 64

[0027] In this embodiment, the height adjustment kit 21 is inserted into the adjustment hole 31 to determine the positional relationship among the footrest 5, the seat 1, the backrest 2, and the front height adjustment rod 3.

[0028] During use, first, the height adjustment kit 21 is inserted into the adjustment hole 31 to determine the positional relationship among the footrest 5, the seat 1, the backrest 2, and the front height adjustment rod 3, that is, to meet the requirements for the leg height, sitting height, and backrest height when children are studying.

[0029] Furthermore, the front height adjustment rod 3 and the rear angle adjustment rod 4 are connected by the joint upper joint 61 and the joint upper and lower head 62 in a staggered cross-fit manner. At this moment, both the joint upper joint 61 and the joint upper and lower head 62 rotate on the connecting screw. When the stop screw 8 is fitted to the stop notch 71 and the embedded nut 81, the rear angle adjustment rod 4 is opened; when the stop screw 8 disengages from the stop notch 71, the rear angle adjustment rod 4 can be folded, thus facilitating storage, storage, and transportation.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An arc segment triangle foldable multifunctional study chair, comprising a chair frame, a footrest mounted on the chair frame, a seat and at least one chair back; its characteristics are: The chair frame includes two left and right groups of front height adjustment rods and rear angle adjustment rods assembled in an arc segment triangle shape, and an angle adjustment kit is provided between the front height adjustment rod and the rear angle adjustment rod to connect the angle relationship between the front height adjustment rod and the rear angle adjustment rod; the left and right ends of the footrest, seat and chair back are respectively provided with height adjustment kits, and the front height adjustment rod is provided with a plurality of adjustment holes for cooperating with the footrest, seat and chair back to adjust the height, and the height adjustment kit is connected with the adjustment hole.

2. The arc segment triangle foldable multifunctional study chair according to claim 1 is characterized by: The angle adjustment kit is provided with a joint upper joint, joint upper and lower heads and a cover, and the joint upper joint and the joint upper and lower heads are cross-matched in a staggered shape.

3. The arc segment triangle foldable multifunctional study chair according to claim 2 is characterized by: The joint upper joint is provided with a fixing screw and an embedded nut, the embedded nut is fixedly connected to the joint upper joint, the cover is buckled on the joint upper joint, and the positional relationship between the joint upper joint and the front height adjustment rod is limited by the fixing screw.

4. The arc segment triangle foldable multifunctional study chair according to claim 2 is characterized by: The upper and lower heads of the joint are provided with an auxiliary support plate, a stop screw and a connecting screw. One end of the auxiliary support plate is fixedly connected to the upper and lower heads of the joint, and the other end of the auxiliary support plate is inserted into the angle adjustment kit. The connecting screw runs through the upper joint of the joint and the upper and lower heads of the joint.

5. The arc segment triangle foldable multifunctional study chair according to claim 4 is characterized by: The auxiliary support plate is provided with a stop slot which is U-shaped. The stop slot cooperates with the stop screw to lock the positional relationship between the auxiliary support plate and the joint upper joint.

6. The arc segment triangle foldable multifunctional study chair according to claim 2 is characterized by: The upper and lower joint heads are connected to the rear angle adjustment rod through fixing screws.

7. The arc segment triangle foldable multifunctional study chair according to claim 1 is characterized by: The height adjustment kit is inserted into the adjustment hole to determine the positional relationship between the footrest, the seat, the chair back and the front height adjustment rod.

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