CN219940020U

CN219940020U - Desk and chair

Info

Publication number: CN219940020U
Application number: CN202320965686.2U
Authority: CN
Inventors: 钟宇翔
Original assignee: Zhihuikang Shenzhen Technology Co ltd
Current assignee: Zhihuikang Shenzhen Technology Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-11-03
Anticipated expiration: 2033-04-18

Abstract

The utility model discloses a desk and a chair, which comprise a desk and a chair. The seat comprises a backrest component, a headrest component movably connected with the backrest component, an adjusting component fixedly connected with the backrest component and a seat surface component pivoted with the backrest component; the surface of the headrest component is provided with a plurality of clamping holes, and the adjustment component is matched with the clamping holes; the backrest component is sleeved with the headrest component; when the headrest component and the backrest component relatively move, the adjustment component is driven to be matched with different clamping holes. The utility model can quickly and conveniently adjust the distance between the headrest component and the backrest component, and is suitable for people with different body types to rest.

Description

Desk and chair

Technical Field

The utility model relates to a teaching appliance, in particular to a desk and a chair.

Background

The desk and chair are used for students to learn in classrooms. For students with partial accommodations, at noon, they often rest in classrooms and lie on their desktops for afternoon. Scientific researches prove that when a user lies prone on a desk for a long time to sleep, the user can press the face and eyes, the neck and shoulder keys can be in a tight state, the spine and joints are pressed, and even the thoracic joints are misplaced. Students are in the growth and development stage, and the students can also influence the future development of the students after lying prone to sleep for a long time.

Chairs are proposed in the market in a form that the chairs can be spread to form a bed, but due to cost consideration, the back rest of the chairs is generally short, the length of the chairs which are spread as a bed is short, and for students with high school, only hands and feet can be contracted to sleep, so that the sleeping quality is poor, and the next lesson taking state is poor.

Disclosure of Invention

The utility model provides a desk and a chair which are used for helping students to noon break. The technical scheme adopted by the utility model is as follows:

a desk and a chair, wherein the desk and the chair comprise a desk and a chair;

the seat comprises a backrest component, a headrest component movably connected with the backrest component, an adjusting component fixedly connected with the backrest component and a seat surface component pivoted with the backrest component;

the surface of the headrest component is provided with a plurality of clamping holes, and the adjustment component is matched with the clamping holes;

the backrest component is sleeved with the headrest component;

when the headrest component and the backrest component relatively move, the adjustment component is driven to be matched with different clamping holes.

The desk and chair comprises a headrest assembly, wherein the headrest assembly comprises a headrest shaft, a headrest fixedly connected with the headrest shaft, and a clamping hole arranged on the surface of the headrest shaft.

The desk and chair comprises a headrest shaft, a backrest assembly and a chair seat, wherein the headrest shaft is U-shaped, and two ends of the headrest shaft are respectively sleeved with the backrest assembly.

The desk and chair comprises a backrest assembly, a headrest shaft and a backrest, wherein the backrest assembly comprises a backrest shaft and a backrest fixedly connected with the backrest shaft;

the adjusting component comprises a fixed ring fixedly connected with the sleeve joint end of the backrest shaft and an elastic element arranged in the fixed ring, an elastic groove is formed in the fixed ring, and the elastic element is arranged in the elastic groove and opposite to the clamping hole.

The desk and chair comprises a first elastic piece and a ball connected with the first elastic piece, wherein the elastic piece comprises a first elastic piece and a first elastic piece;

the ball is matched with the clamping hole.

The desk and chair is characterized in that a lantern ring is arranged on one side, opposite to the clamping hole, of the elastic groove;

the ball is abutted with the lantern ring.

The desk and chair comprises a seat surface and a seat surface supporting shaft fixedly connected with the seat surface, wherein the seat surface supporting shaft is pivoted with a backrest shaft.

The desk and chair comprises a seat surface supporting shaft, a first rotating part, a second rotating part, an adjusting shaft, a second elastic part and a limiting part, wherein the first rotating part and the second rotating part are arranged at one end of the supporting body;

a section of the backrest shaft connected with the seat surface supporting piece is provided with a rotating part, and the rotating part is pivoted with the second rotating piece and matched with the limiting part;

when the adjusting shaft does not rotate, the rotating part is respectively abutted with the adjusting shaft and the limiting part; when the adjusting shaft rotates around the first rotating member by more than a preset angle, the rotating portion rotates.

The desk and chair comprises a seat surface supporting shaft, a first clamping part and a second clamping part, wherein the seat surface supporting shaft is used for limiting the rotation of the adjusting shaft, and the second clamping part is used for limiting the rotation of the rotating part.

The number of the supporting main bodies is greater than 1;

the seat surface supporting shaft comprises supporting rods which are fixedly connected with different supporting main bodies respectively. The beneficial effects are that: compared with the prior art, the utility model provides a desk and chair, wherein the chair comprises a backrest component, a headrest component, a seat surface component and an adjusting component for adjusting the headrest component and the backrest component. The seat surface component is pivoted with the backrest component, so that the seat surface component can incline for a certain angle, thereby facilitating the sleeping of students. The headrest subassembly cup joints with the back subassembly, and the headrest subassembly is equipped with the screens, when headrest subassembly and back subassembly relative movement, mediate subassembly and back subassembly fixed connection, simultaneously, can cooperate with the screens of different positions, the user can the free adjustment back subassembly and the relative distance between the headrest subassembly, to the student of different statures, can select suitable headrest subassembly and the distance between the back subassembly according to the height to at help student noon break, provide better sleep.

Drawings

FIG. 1 is a combined view of a desk and chair according to the present utility model.

Fig. 2 is a first perspective view of a chair in the desk and chair according to the present utility model.

Fig. 3 is a second perspective view of the chair in the desk and chair according to the present utility model.

Fig. 4 is an exploded view of the chair in the desk and chair according to the present utility model.

Fig. 5 is an exploded view of the back shaft, headrest shaft and adjustment assembly of the chair in the desk and chair provided by the utility model.

FIG. 6 is an exploded view of the adjustment assembly of the desk and chair of the present utility model.

Fig. 7 is a third perspective view of a chair (without a backrest and a seat) in a desk and chair according to the present utility model.

Fig. 8 is a fourth perspective view of a chair (without a backrest, a seat and a support bar) in a desk and chair according to the present utility model.

Fig. 9 is a partial enlarged view of the area a in fig. 8.

Fig. 10 is a perspective view of the backrest assembly in the chair in the desk and chair according to the present utility model.

The meaning of the labels in the figures is:

a desk, a desk; 200, a seat; 210, a backrest assembly; 220, a headrest assembly; 230, adjusting the assembly; 240, a seat surface assembly; 250, a hook assembly; 211, a backrest shaft; 212, a backrest; 221, a headrest shaft; 223, shaft sleeve; 222, a headrest; 231, an elastic element; 232, a fixing ring; 241, seating surface; 242, the seat surface supporting shaft; 211a, a rotating part; 221a, a clamping hole; 221b, horizontal axis; 221c, a longitudinal axis; 231a, a first elastic member; 231b, balls; 232a, a collar; 242a, support bar; 242b supporting the body; 211b, hooking angle; s1, a first rotating member; s2, a second rotating member; s3, adjusting the shaft; s4, a second elastic member; s5, a limiting part; s6, a first clamping part; s7, a second clamping part; s8, pressing part.

Detailed Description

The utility model provides a desk and a chair, which are used for making the purposes, technical schemes and effects of the utility model clearer and more definite, and the utility model is further described in detail below by referring to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The embodiment of the utility model can be applied to classrooms, conference rooms and other scenes.

It should be noted that the above application scenario is only shown for the convenience of understanding the present utility model, and embodiments of the present utility model are not limited in this respect. Rather, embodiments of the utility model may be applied to any scenario where applicable.

The utility model will be further described by the description of embodiments with reference to the accompanying drawings.

As shown in fig. 1, embodiments of the present disclosure may include a desk and chair, including desk and chair 200. The seat 200 includes a back assembly 210, a headrest assembly 220 movably coupled to the back assembly 210, an adjustment assembly 230 fixedly coupled to the back assembly 210, and a seat surface assembly 240 hingedly coupled to the back assembly 210. The back assembly 210 is an assembly that a user can provide support from the back in use, the headrest assembly 220 is an assembly that a user can provide support from the head in use, and the seat surface assembly 240 is an assembly that a user provides support to the buttocks in use. Because the headrest assembly 220 and the backrest assembly 210 are movably coupled, and the backrest assembly 210 is hinged to the seat assembly 240, the entire headrest assembly 220 and the backrest assembly 210 can be rotated relative to the seat assembly, and the headrest assembly 220 and the backrest assembly 210 can be tilted when a user wants to rest.

The headrest assembly 220 is provided with a plurality of blocking holes 211a, and the shape and size of the blocking holes 211a are not limited herein. When the headrest assembly 220 and the backrest assembly 210 are in relative movement, the adjustment assembly 240 is fixedly connected with the backrest assembly 210, so that the adjustment assembly and the backrest assembly 210 are also in relative movement, at this time, the corresponding clamping holes 211a of the adjustment assembly 240 are changed, and the adjustment assembly can be matched with different clamping holes 211a, so that the relative distance between the headrest assembly 220 and the backrest assembly 210 is adjusted, and the adaptation to users with different statures is realized.

The headrest assembly 220 may include a headrest shaft 221 and a headrest 222, the headrest shaft 221 being fixedly coupled to the headrest 222, the user being head supported by the headrest 222, and the headrest shaft 221 being movably coupled to the backrest assembly 210 to provide support for the headrest 222. The number of the locking holes 211a may be several along the vertical direction, and the greater the number of the locking holes 211a within a certain range, the higher the adjustment accuracy, since the relative distance between the headrest assembly 220 and the backrest assembly 210 is required to be moved in the present embodiment. As shown in fig. 3 to 5, the number of the headrest shafts 221 is 1 or more, and 2 headrest shafts are generally selected, so that the support stability can be improved during support, the U-shaped headrest shaft 221 in this embodiment is adopted, the U-shaped headrest shaft 221 includes two longitudinal shafts 221c and a transverse shaft 221b connecting the two longitudinal shafts 221c, and supports the headrest 222 from three directions from two sides and the middle, so as to improve the support stability. Both ends of the U-shaped headrest shaft 221, that is, portions of the longitudinal axis 221c, are coupled to the backrest assembly 210. The headrest shaft 221 may be provided with a sleeve 223 outside, and the headrest shaft 221 is wrapped around the headrest shaft 221 and fixedly connected with the headrest 222 to protect the headrest shaft 221.

The backrest assembly 210 includes a backrest shaft 211 and a backrest 212, and the backrest shaft 211 is fixedly connected with the backrest 212. The fixed connection between the backrest shaft 211 and the backrest 212 may be in the form of screws, rivets, glue, etc. The backrest shaft 211 is sleeved with the headrest shaft 221, and the adjusting component 240 is arranged at the sleeved end of the backrest shaft 211. In a first implementation, the adjustment assembly 240 comprises an insert, the backrest shaft 211 also being provided with a plurality of clamping holes 211a, the insert passing through the clamping holes 211a of the backrest shaft 211 and the headrest shaft 221. When the relative distance between the backrest shaft 211 and the headrest shaft 221 needs to be adjusted, the plug is pulled out, the distance between the backrest shaft 211 and the headrest shaft 221 is adjusted, the plug is inserted into the pair of the clamping holes 211a of the backrest shaft 211 and the headrest shaft 221, and then the plug is inserted into the clamping holes 211a of the backrest shaft 211 and the headrest shaft 221.

As shown in fig. 4 to 6, in the second implementation manner, the adjusting component 240 includes a fixing ring 232 and an elastic element 231 disposed in the fixing ring 232, the fixing ring 232 is provided with an elastic groove, and the elastic element 231 is disposed in the elastic groove and opposite to the clamping hole 211a. The elastic member 231 is deformable by an external force, so that when the headrest shaft 221 is pulled by the external force, the elastic member 231 is deformed, ejected from one of the clamping holes 211a, and protrudes from the next or previous clamping hole 211a to be engaged with the clamping hole 211a. This approach is simpler and more flexible than the first implementation.

Further, the elastic member 231 may include a first elastic member 231a and a ball 231b, wherein one end of the first elastic member 231a abuts against the elastic groove and the other end abuts against the ball 231 b. The balls 231b are engaged with the engagement holes 211a, when the headrest shaft 221 is pulled by an external force, the balls 231b are pressed to compress the first elastic members 231a, and when the next engagement hole 211a reaches the opposite position of the balls 231b, the balls 231b are extended under the action of the first elastic members 231a and engaged with the engagement holes 211a. The first elastic member 231a may employ a member having a stretching and rebounding function such as a spring.

Since the ball 231b has rolling property, if the dimension of the engagement hole 211a is deviated and larger than the diameter of the ball 231b, the ball 231b is easily rolled out, and therefore, a collar 232a is provided on the side of the elastic groove facing the engagement hole 211a, the ball 231b abuts against the collar 232a, and the collar 232a protects the ball 231b from rolling out.

Further, in this embodiment, the backrest module 210 further includes a hook module 250 for hanging articles, and the hook module 250 is sleeved with the backrest module 210.

As shown in fig. 7 to 10, the present embodiment further provides an implementation manner of the seat surface assembly 240 and the backrest assembly 210 to rotate relatively, where the seat surface assembly 240 includes a seat surface 241 and a seat surface supporting shaft 242 fixedly connected to the seat surface 241, and the seat surface supporting shaft 242 is pivoted to the backrest shaft 211. The seat support shaft 242 supports the seat 241, and the seat support shaft 242 and the backrest shaft 211 are pivoted to each other to rotate.

Further, the seat support shaft 242 includes a support body 242b, a first rotating member s1 and a second rotating member s2 disposed at one end of the support body 242b, an adjusting shaft s3, a second elastic member s4, and a limiting portion s5 for limiting the backrest shaft 211. Meanwhile, a section of the backrest shaft 211 connected with the support member of the seat surface 241 is provided with a rotating portion 211a, and the rotating portion 211a is pivoted with the second rotating member s 2. When the adjustment shaft s3 does not rotate, the rotation part 211a is abutted against the adjustment shaft s3 and the limiting part s5 respectively; when the adjustment shaft s3 rotates around the first rotating member s1 and the rotating portion 211a rotates around the second rotating member s2, the rotating portion 211a also rotates with respect to the second rotating member s2 when the adjustment shaft s3 rotates because the rotating portion 211a abuts against the adjustment shaft s3 and the second elastic member s4 is connected to the seat support shaft 242 and the adjustment shaft s3, respectively, to limit the degree of freedom of rotation of the adjustment shaft s 3.

As shown in fig. 8, the adjustment shaft s3 includes a pressing portion s8, and when a pressing force is applied downward to the pressing portion s8, the adjustment shaft s3 rotates around the first rotating member s1, and the second elastic member s4 restricts the rotation of the adjustment shaft s3 based on an elastic tensile force. The rotation part 211a includes a hook angle 211b, and when the adjustment shaft s3 rotates downward and the rotation distance exceeds the thickness of the hook angle 211b, the rotation part 211a loses contact with the adjustment shaft s3 and starts rotating until being contacted by the second clamping part s 7.

In order to limit the rotation angle of the adjusting shaft s3 and the rotating portion 211a, the seat support shaft 242 further includes a first clamping portion s6 and a second clamping portion s7, the first clamping portion s6 and the second clamping portion s7 are disposed on the support main 242b, and when the adjusting shaft s3 rotates to the maximum angle relative to the first rotating member s1, the first clamping portion s6 abuts against the adjusting shaft s 3; when the rotation shaft rotates to the maximum angle with respect to the second rotator s2, the second stopper s7 abuts against the rotation portion 211a. Meanwhile, the first clamping portion s6 and the second elastic member s4 limit and pull back the rotation angle of the adjusting shaft s3, so that after the rotating portion rotates, the adjusting shaft s3 limits the hook angle 211b, and the backrest assembly 210 is stabilized.

In order to increase the stability of the seat surface assembly 240 and the backrest assembly 210 during rotation, the number of the supporting bodies 242b is greater than 1, and the seat surface supporting shaft 242 further includes supporting rods 242a, wherein the supporting rods 242a are fixedly connected with different supporting bodies 242 b. As shown in fig. 7 and 8, the support bar 242a is inserted into the support body 242b in a joggled manner. In addition, the support bar 242a can also be fixedly connected to different backrest shafts 211.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A desk and chair comprises a desk and a chair; it is characterized in that the method comprises the steps of,

the backrest component is sleeved with the headrest component;

2. The desk and chair of claim 1 wherein said headrest assembly comprises a headrest shaft, a headrest fixedly connected to said headrest shaft, said clamping aperture being provided in a surface of said headrest shaft.

3. The desk and chair of claim 2 wherein said headrest axle is U-shaped, and wherein said headrest axle is respectively sleeved at each end thereof with said back rest assembly.

4. A desk and chair as claimed in any one of claims 2 to 3 wherein said back support assembly comprises a back support shaft, a back support fixedly connected to said back support shaft, said headrest shaft being journaled with said back support shaft;

5. The desk and chair of claim 4 wherein said resilient member comprises a first resilient member and a ball connected to said first resilient member;

the ball is matched with the clamping hole.

6. The desk and chair according to claim 5, wherein a collar is provided on a side of the elastic groove opposite to the clamping hole;

the ball is abutted with the lantern ring.

7. The desk and chair of claim 4 wherein said seat assembly comprises a seat, a seat support shaft fixedly connected to said seat, wherein said seat support shaft is pivotally connected to said back support shaft.

8. The desk and chair according to claim 7, wherein the seat support shaft comprises a support main body, a first rotating member and a second rotating member arranged at one end of the support main body, an adjusting shaft pivoted with the first rotating member, a second elastic member and a limiting portion respectively connected with the seat support shaft and the adjusting shaft;

9. The desk and chair of claim 8 wherein said seat support shaft further comprises a first detent for limiting rotation of said adjustment shaft and a second detent for limiting rotation of said swivel.

10. The desk and chair of claim 8 wherein the number of support bodies is greater than 1;

the seat surface supporting shaft comprises supporting rods which are fixedly connected with different supporting main bodies respectively.