Study chair

Abstract

The utility model relates to a study chair, which comprises a chair main body for a user to sit and a chair back, the chair back is connected with the chair main body, the study chair is characterized by further comprising a driving component, and the chair back moves back and forth relative to the chair main body under the action of the driving component. According to the technical scheme, the sitting depth of the study chair is adjusted by adjusting the front-back position of the chair back, the study chair is suitable for being used by users of different age groups, and the comfort degree is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of school supplies, in particular to a study chair. Background Art

[0002] Children's learning seats are usually supporting products of children's learning tables. Their main function is to enable children to maintain a better posture when using the learning seats to protect the children's spine.

[0003] Children's learning seats include a seat, a cushion and a seat back; most children's learning seats can only adjust the height of the seat back, but cannot adjust it forward and backward, so that the positions of the seat back and the seat cushion are relatively fixed and cannot be adjusted; as children grow older, their body shapes will also change, and when children sit on the children's learning seats, their sitting depth will also change; the greater the sitting depth, the smaller the distance between the child's back and the seat back; conversely, the smaller the sitting depth, the greater the distance between the child's back and the seat back; since the existing children's learning seats cannot adjust the seat back, when older children sit on the learning seats, the position of the seat back and the seat cushion is relatively fixed, so that the child's sitting depth is small, which will make the child feel uncomfortable sitting on the learning seat for a long time. Therefore, a learning seat with the seat back adjustable forward and backward is needed, so that it can be suitable for children of different ages and improve the comfort of children when using the learning seat. Summary of the invention

[0004] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a study chair, which can adjust the seat depth by adjusting the front and rear position of the chair back, so as to be suitable for users of different age groups and improve the comfort.

[0005] The technical solution of the utility model is: a learning chair, comprising a chair body for a user to sit on and a chair back, the chair back is connected to the chair body, and also comprises a driving component, under the action of the driving component, the chair back moves forward and backward relative to the chair body.

[0006] By adopting the above technical solution, the chair back is adjusted by the driving component to move it forward and backward, and the seat depth is adjusted. It is suitable for different user groups and has high practicality. The chair back fits the user's back better and is more comfortable.

[0007] The utility model is further configured as follows: the driving component includes a driving switch, a locking piece and a spring, the driving switch is connected to the locking piece, a connecting piece is provided on the rear side wall of the chair back, the spring is provided between the connecting piece and the chair body, after the locking piece unlocks the chair back under the action of the driving switch, the spring drives the connecting piece to move forward and backward relative to the chair body, and when the locking piece locks the chair back, the chair back is fixed relative to the chair body.

[0008] With the above further arrangement, the driving switch drives the locking piece to disengage, and the spring pushes the chair back to move forward, thereby realizing the front and rear adjustment of the chair back. After the adjustment is completed, the driving switch is released, and the locking piece locks the chair back to keep its position fixed. When the user leans back, the chair back is not pushed back to move, which has good stability and is convenient for adjustment. When moving backward, the locking piece is also disengaged, and the user presses the chair back backward, and the chair back slides backward. After sliding into place, the driving switch is released and the locking piece is locked.

[0009] The utility model is further configured as follows: the driving assembly also includes a rotating member and a first reset member that provides a reset force to the locking member. The rotating member is rotatably arranged on the chair body. A sleeve is provided on the connecting member. The sleeve is sleeved on the outer periphery of the rotating member and is threadedly matched with the rotating member. A plurality of locking grooves are provided along the circumference of the rotating member at the end of the rotating member. The locking member is snapped into the locking groove under the action of the first reset member to lock the chair back.

[0010] With the above-mentioned further arrangement, when the spring pushes the chair back to move forward, due to the threaded cooperation between the connecting member and the rotating member, when the connecting member slides, the rotating member will rotate. After releasing the driving switch, the locking member will be reset under the action of the first reset member and snap into the corresponding locking groove, thereby locking the rotating member and then locking the chair back. The structure is simple and the operation is convenient.

[0011] The utility model is further configured as follows: a first accommodating chamber, a second accommodating chamber and a third accommodating chamber are provided at the upper end of the chair body, the second accommodating chamber is communicated with the first accommodating chamber and the third accommodating chamber, the third accommodating chamber is located below the second accommodating chamber, the rotating member, the connecting member and the spring are all located in the first accommodating chamber, one end of the rotating member with a locking groove extends into the second accommodating chamber, the upper end of the locking member is located in the second accommodating chamber, the lower end is located in the third accommodating chamber, and slides into the third accommodating chamber under the action of a driving switch, the first reset member is configured by a reset spring, one end of which abuts against the lower bottom wall of the second accommodating chamber, and the other end abuts against the locking member.

[0012] With the above further configuration, the structural layout is reasonable and the structure is compact. When the locking member slides downward, it presses the reset spring. In the absence of external force, the reset spring resets the locking member so that it is re-engaged in the locking groove.

[0013] The utility model is further configured as follows: a limit plate is provided on the chair body, a guide groove is provided on the limit plate along the sliding direction of the chair back, a slider is provided on the connecting piece, and the slider is slidably arranged in the guide groove.

[0014] By adopting the above-mentioned further configuration, the structure of the chair back is stable when it moves forward and backward, and the guide groove cooperates with the slider to play a guiding role. Two limit plates are provided, and sliders are correspondingly provided on the two side walls of the connecting piece.

[0015] The utility model is further configured as follows: it also includes a rear cover plate, the rear cover plate is connected to the chair body, and the rear cover plate is provided with positioning ribs. When the rear cover plate is connected to the chair body, the positioning ribs are pressed against the limiting piece.

[0016] By adopting the above-mentioned further arrangement, the limiting piece is positioned to prevent the chair back from being separated from the chair body when sliding forward.

[0017] The utility model is further configured as follows: an adjustment component is provided between the connecting member and the chair back, and the chair back is driven by the adjustment component to vertically slide and cooperate with the connecting member.

[0018] By adopting the above-mentioned further configuration, the height of the chair back can be adjusted according to the height of the user, which is highly practical and more comfortable to use.

[0019] The utility model is further configured as follows: the adjustment component includes a first rack and a second rack that are meshed with each other, the first rack is arranged on the connecting piece, and the second rack is arranged on the side wall of the back of the chair, the first rack is provided with a locking hole, a positioning rod is threadedly connected to the locking hole, a sliding groove is opened on the chair back along its vertical direction, the end of the positioning rod passes through the sliding groove and extends into the chair back, and the positioning rod extending into the chair back is sleeved with a second reset member that provides the chair back with reset to the rear side.

[0020] The above-mentioned further arrangement has a simple structure and is easy to operate. When adjusting, the chair back is pulled or pushed forward to compress the second reset member, and the second rack is separated from the first rack. At this time, the chair back can be slid up and down to slide along the vertical direction of the connecting member. After adjusting to the right position, the chair back is released. Under the action of the reset member, the second rack is engaged with the first rack to realize the connection between the chair back and the connecting member. When adjusting forward and backward, the connecting member and the chair back slide synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the interior of the second accommodating cavity in a specific embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the connection between the connecting member and the rotating member in a specific embodiment of the utility model;

[0024] Figure 4 for Figure 3 A magnified view of part A;

[0025] Figure 5 It is a schematic diagram of the second accommodating cavity of a specific embodiment of the utility model;

[0026] Figure 6 It is a schematic diagram of the first accommodating cavity and the third accommodating cavity of a specific embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the installation of the rotating member and the spring in a specific embodiment of the utility model;

[0028] Figure 8 It is a schematic diagram of a connecting piece of a specific embodiment of the utility model;

[0029] Fig. 9 It is a schematic diagram of the second rack of a specific embodiment of the utility model;

[0030] Fig.10 It is a schematic diagram of a rotating member of a specific embodiment of the utility model;

[0031] Fig.11 It is a schematic diagram of a rear cover plate of a specific embodiment of the utility model;

[0032] Fig.12 It is a schematic diagram of a control switch of a specific embodiment of the utility model;

[0033] Fig.13 It is a schematic diagram of the first rack of a specific embodiment of the utility model;

[0034] Fig.14 It is a schematic diagram of a positioning rod and a second resetting member according to a specific embodiment of the utility model. DETAILED DESCRIPTION

[0035] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0038] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that technical personnel in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] like Figure 1-14 As shown, a study chair includes a chair body 1 for a user to sit on and a chair back 2, wherein the chair back 2 is connected to the chair body 1 and also includes a driving component 3. Under the action of the driving component 3, the chair back 2 moves forward and backward relative to the chair body 1. The chair back 2 is adjusted by the driving component 3 to move forward and backward, and the seat depth is adjusted. The chair is suitable for different user groups, has high practicality, and the chair back fits the user's back more closely, making it more comfortable.

[0040] The driving assembly 3 includes a driving switch 31, a locking member 32 and a spring 33. The driving switch 31 is connected to the locking member 32. A connecting member 21 is provided on the rear side wall of the chair back 2. The spring 33 is provided between the connecting member 21 and the chair body 1. After the locking member 32 unlocks the chair back 2 under the action of the driving switch 31, the spring 33 drives the connecting member 21 to move forward and backward relative to the chair body 1. When the locking member 32 locks the chair back 2, the chair back 2 is fixed relative to the chair body 1. The driving switch 31 drives the locking member 32 to disengage, and the spring 33 pushes the chair back 2 to move forward to achieve the front and rear adjustment of the chair back. Specifically, there are two springs 33, which are respectively located on both sides of the connecting member 21. After the adjustment is completed, the driving switch 31 is released, and the locking member 32 locks the chair back 2 to keep its position fixed. When the user leans back, the chair back is not pushed back to move, which has good stability and is convenient to adjust. When moving backward, the locking member is also disengaged, and the user presses the chair back backward, and the chair back slides backward. After sliding into place, the driving switch is released and the locking member is locked. The driving assembly 3 also includes a rotating member 34 and a first reset member 35 that provides a reset force for the locking member 32. The rotating member 34 is rotatably arranged on the chair body 1. The connecting member 21 is provided with a sleeve 211. The sleeve 211 is sleeved on the outer periphery of the rotating member 34 and is threadedly matched with the rotating member 34. A plurality of locking grooves 341 are provided at the end of the rotating member 34 along its circumference. The locking member 32 is snapped into the locking groove 341 under the action of the first reset member 35 to lock the chair back 2. A gear can also be provided. The gear is connected to the rotating member by a screw, and the locking groove is formed between two adjacent teeth. When the spring 33 pushes the chair back 2 to move forward, the rotating member 34 will rotate when the connecting member 21 slides because the connecting member 21 is threadedly matched with the rotating member 34. After the driving switch 31 is released, the locking member 32 is reset under the action of the first reset member 35 and is snapped into the corresponding locking groove 341 to lock the rotating member 34, thereby locking the chair back 2. The structure is simple and the operation is convenient.

[0041] The upper end of the chair body 1 is provided with a first accommodating chamber 11, a second accommodating chamber 12 and a third accommodating chamber 13, the second accommodating chamber 12 is communicated with the first accommodating chamber 11 and the third accommodating chamber 13, the third accommodating chamber 13 is located below the second accommodating chamber 12, the rotating member 34, the connecting member 21 and the spring 33 are all located in the first accommodating chamber 11, the rotating member 34 is provided with one end of the locking groove 341 extending into the second accommodating chamber 12, the upper end of the locking member 32 is located in the second accommodating chamber 12, and the lower end is located in the third accommodating chamber 13, and under the action of the driving switch 31 Sliding into the third accommodating chamber 13, the first return member 35 is arranged by a return spring, one end of which abuts against the lower bottom wall of the second accommodating chamber 12, and the other end abuts against the locking member 32. The locking member 32 is provided with a first connecting column 321, and the second accommodating chamber 12 is provided with a second connecting column 121. The two ends of the return spring 35 are respectively sleeved on the corresponding connecting columns. The structure layout is reasonable and the structure is compact. When the locking member 32 slides downward, it presses the return spring 35. In the absence of external force, the return spring 35 resets the locking member 32 so that it is re-stuck in the locking groove 341.

[0042] The chair body 1 is also provided with a limit plate 14, and a guide groove 141 is opened on the limit plate 14 along the sliding direction of the chair back 2. A slider 212 is provided on the connecting member 21, and the slider 212 is slidably set in the guide groove 141, so that the structure is stable when the chair back 2 moves forward and backward. The guide groove 141 and the slider 212 can cooperate to play a guiding role. There are two limit plates 14, which are arranged in the first accommodating cavity 11, and one end extends into the second accommodating cavity 12, and is hooked on the side wall of the accommodating cavity through a hook 142. Sliders 212 are correspondingly provided on the two side walls of the connecting member 21. It also includes a rear cover plate 4, which is connected to the chair body 1 and is covered on the rear side of the chair body 1 to seal the second accommodating cavity 12. The rear cover plate 4 is connected to the chair body 1 by screws to facilitate the disassembly and assembly of internal components. The rear cover plate 4 is provided with a positioning rib 41. When the rear cover plate 41 is connected to the chair body 1, the positioning rib 41 presses against the limit plate 14 to position the limit plate 14 to prevent the chair back 2 from detaching from the chair body 1 when sliding forward.

[0043] An adjustment component is provided between the connecting member 21 and the chair back 2. The chair back 2 can slide vertically with the connecting member 21 under the drive of the adjustment component, so that the height of the chair back can be adjusted according to the height of the user. It is highly practical and more comfortable to use. Specifically, the adjustment component includes a first rack 61 and a second rack 62 that mesh with each other. The first rack 61 is provided on the connecting member 21, and the second rack 62 is provided on the rear wall of the chair back 2. The connecting member 21 and the chair back 2 are separately provided, and the connection is achieved by the mutual meshing of the two racks. A locking hole 611 is provided on the first rack 61, and a positioning rod 7 is connected to the locking hole 611 through an inner thread. A slide groove 22 is provided on the chair back 2 along its vertical direction. The end of the positioning rod 7 passes through the slide groove 22 and extends into the chair back 2. When the chair back slides up and down, the positioning rod does not move, and the slide groove and the positioning rod slide relatively. The positioning rod extending into the chair back 2 The positioning rod 7 is provided with a second reset member 71 for returning the chair back 2 to the rear side. The second reset member 71 is arranged by a second reset spring. Gaskets are arranged at both ends of the second reset spring. The structure is simple and the operation is convenient. When adjusting, the chair back 2 is pulled or pushed forward to compress the second reset member 71. The second rack 62 is separated from the first rack 61. At this time, the chair back can be slid up and down to slide along the vertical direction of the connecting member 21. After adjusting to the right position, the chair back 2 is released. Under the action of the reset member, the second rack 62 is engaged with the first rack 61 to realize the connection between the chair back 2 and the connecting member 21. When adjusting forward and backward, the connecting member 21 and the chair back 2 slide synchronously.

[0044] The chair body 1 includes a support foot 15, a seat 16 and a connecting plate 17. The seat 16 is arranged at the upper end of the support foot 15, and the connecting plate 17 is located at the rear side of the seat 16. The driving switch 31 is arranged at the lower end surface of the seat 16. The lower end surface of the seat 16 is provided with a mounting box. The driving switch is hingedly arranged on the mounting box and connected to the locking member 32 through a pull rope 5. The pull rope can be a pneumatic pull rope, which is arranged at the lower end surface of the seat for easy operation. The upper end of the connecting plate 17 is provided with the accommodating cavity, and the pull rope 5 extends into the third accommodating cavity 13 and is connected to the locking member 32.

Claims

1. A study chair, comprising a chair body (1) for a user to sit on and a chair back (2), wherein the chair back (2) is connected to the chair body (1), characterized in that: The invention also comprises a driving component (3), under the action of which the chair back (2) moves forward and backward relative to the chair body (1), the driving component (3) comprising a driving switch (31), a locking member (32) and a spring (33), the driving switch (31) being connected to the locking member (32), a connecting member (21) being provided on the rear side wall of the chair back (2), the spring (33) being provided between the connecting member (21) and the chair body (1), after the locking member (32) unlocks the chair back (2) under the action of the driving switch (31), the spring (33) drives the connecting member (21) to move forward and backward relative to the chair body (1), and when the locking member (32) locks the chair back (2), the chair back (2) is fixed relative to the chair body (1).

2. The study chair according to claim 1, characterized in that: The driving assembly (3) further comprises a rotating member (34) and a first reset member (35) for providing a reset force to the locking member (32); the rotating member (34) is rotatably arranged on the chair body (1); the connecting member (21) is provided with a sleeve (211); the sleeve (211) is sleeved on the outer circumference of the rotating member (34) and is threadedly engaged with the rotating member (34); a plurality of locking grooves (341) are provided at the end of the rotating member (34) along its circumference; the locking member (32) is snapped into the locking groove (341) under the action of the first reset member (35) to lock the chair back (2).

3. The study chair according to claim 2, characterized in that: The upper end of the chair body (1) is provided with a first accommodating chamber (11), a second accommodating chamber (12) and a third accommodating chamber (13); the second accommodating chamber (12) is communicated with the first accommodating chamber (11) and the third accommodating chamber (13); the third accommodating chamber (13) is located below the second accommodating chamber (12); the rotating member (34), the connecting member (21) and the spring (33) are all located in the first accommodating chamber (11); the rotating member (34) is provided with one end of a locking groove (341) extending into the second accommodating chamber (12); the upper end of the locking member (32) is located in the second accommodating chamber (12) and the lower end is located in the third accommodating chamber (13); and the locking member (32) slides into the third accommodating chamber (13) under the action of the driving switch (31); the first reset member (35) is arranged by a reset spring, one end of which abuts against the lower bottom wall of the second accommodating chamber (12) and the other end abuts against the locking member (32).

4. The learning chair according to any one of claims 1 to 3, characterized in that: The chair body (1) is also provided with a limiting plate (14), the limiting plate (14) is provided with a guide groove (141) along the sliding direction of the chair back (2), and the connecting member (21) is provided with a sliding block (212), and the sliding block (212) is slidably arranged in the guiding groove (141).

5. The study chair according to claim 4, characterized in that: The chair body (1) further comprises a rear cover plate (4), wherein the rear cover plate (4) is connected to the chair body (1), and a positioning rib (41) is provided on the rear cover plate (4). When the rear cover plate (4) is connected to the chair body (1), the positioning rib (41) presses against the limiting plate (14).

6. The learning chair according to any one of claims 1 to 3, characterized in that: An adjustment component is provided between the connecting member (21) and the chair back (2), and the chair back (2) is driven by the adjustment component to vertically slide and cooperate with the connecting member (21).

7. The study chair according to claim 6, characterized in that: The adjustment assembly comprises a first rack (61) and a second rack (62) meshing with each other, the first rack (61) being arranged on the connecting member (21) and the second rack (62) being arranged on the rear side wall of the chair back (2), the first rack (61) being provided with a locking hole (611), the locking hole (611) being internally threadedly connected with a positioning rod (7), the chair back (2) being provided with a slide groove (22) along its vertical direction, the end of the positioning rod (7) passing through the slide groove (22) and extending into the chair back (2), the positioning rod (7) extending into the chair back (2) being sleeved with a second reset member (71) for providing the chair back (2) with a reset to the rear side.

8. The learning chair according to any one of claims 1 to 3, characterized in that: The chair body (1) comprises a supporting foot (15), a seat (16) and a connecting plate (17); the seat (16) is arranged at the upper end of the supporting foot (15); and the connecting plate (17) is located at the rear side of the seat (16) and is connected to a locking member (32).

9. The study chair according to claim 8, characterized in that: The upper end of the connecting plate (17) is provided with a receiving cavity, and the pull rope (5) extends into the third receiving cavity (13) and is connected to the locking member (32).

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