CN111109907B - Main structure of a dual-purpose student chair and a dual-purpose office chair - Google Patents
Main structure of a dual-purpose student chair and a dual-purpose office chair Download PDFInfo
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- CN111109907B CN111109907B CN202010089539.4A CN202010089539A CN111109907B CN 111109907 B CN111109907 B CN 111109907B CN 202010089539 A CN202010089539 A CN 202010089539A CN 111109907 B CN111109907 B CN 111109907B
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- 238000000034 method Methods 0.000 abstract description 23
- 230000007246 mechanism Effects 0.000 abstract description 10
- 230000004630 mental health Effects 0.000 abstract description 9
- 230000005484 gravity Effects 0.000 description 9
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000284 resting effect Effects 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 230000036544 posture Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/22—Chairs or stools with vertically-adjustable seats with balancing device, e.g. by spring, by weight
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Supports for the head or the back
- A47C7/40—Supports for the head or the back for the back
- A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
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- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
本发明的一种坐躺两用学生椅和坐躺两用办公椅主体结构主要由坐躺切换架部件和椅背部件组成。坐躺切换架部件的斜件组件I、斜件组件II和侧件组成了交叉架组件。可控气弹簧设置在交叉架组件上，椅背部件通过定紧组件连接在交叉架组件上。操作可控气弹簧和定紧组件，实现椅子的坐躺互切及座件的高度调整。其结构特性，使可控气弹簧在行程小时，座件高度调整大和椅子坐时收缩、躺时伸展，以及坐躺时脚都搁在地上等多个优点。本发明采用交叉式主体机构，用于教室的尚处于开发处女地的坐躺学生椅和大众化的坐躺办公椅上，为中小学生及教师等的恰当和良好的午睡方式创造条件，服务于中小学生的发育、身心健康和学习。
The main structure of a dual-purpose student chair and a dual-purpose office chair for sitting and lying of the present invention is mainly composed of a sitting and lying switching frame component and a chair back component. The inclined component assembly I, the inclined component assembly II and the side components of the sitting and lying switching frame component constitute a cross frame component. The controllable gas spring is arranged on the cross frame component, and the chair back component is connected to the cross frame component through a fixing component. The controllable gas spring and the fixing component are operated to realize the sitting and lying switching of the chair and the height adjustment of the seat component. Its structural characteristics enable the controllable gas spring to have a small stroke, a large seat height adjustment, and the chair can be contracted when sitting and stretched when lying, and the feet can be placed on the ground when sitting or lying. The present invention adopts a cross-type main body mechanism, which is still in the virgin land of development for sitting and lying student chairs and popular sitting and lying office chairs in classrooms, creating conditions for appropriate and good napping methods for primary and secondary school students and teachers, etc., and serving the development, physical and mental health and learning of primary and secondary school students.
Description
Technical Field
The invention relates to the technical field of education equipment and furniture, in particular to a sitting and lying dual-purpose student chair and a main body structure of the sitting and lying dual-purpose office chair.
Background
Proper and good afternoon nap mode is beneficial to the development, physical and mental health and study of students in middle and primary schools, and is beneficial to the physical and mental health and work of office staff such as teachers. The current afternoon nap situation of the primary and secondary schools which are implemented or being popularized is various, most of the primary and secondary schools adopt improper sleeping postures which are prone to be on a desk, some students take the sleeping tool to lie on the ground for afternoon nap, and some schools are provided with afternoon nap classrooms. The development of a sitting and lying dual-purpose student chair for classrooms is a condition for proper and good afternoon nap mode of middle and primary school students. For various reasons, a suitable and good sitting and lying dual-purpose student chair for classrooms has been developed for virgin land to date. The development of the seating and lying dual-purpose office chair suitable for popularization provides proper and good afternoon nap modes for office staff such as teachers and the like, and provides conditions for improving the utilization rate of office places.
The telescopic dual-purpose office and study chair for sitting and lying with the patent number ZL201721517914.0, the telescopic dual-purpose chair for sitting and lying with the patent number ZL201820336205.0, the sitting and lying switching mechanism for sitting and lying with the application number 201910637125. X and the like are implemented in various technical schemes, and create conditions for proper and good afternoon nap modes of office staff such as students, teachers and the like in an effort attempt. From the practice of the technical schemes, from the deep knowledge and study of the use environment of school educational appliances and classrooms thereof, namely crowded but neat classrooms, limited space and area, great height difference between the same classmates and different classmates, and the like, the suitable and good sitting and lying dual-purpose student chair for classrooms, which is to be realized, is determined to meet the following requirements that ① is telescopic, contracts when sitting and stretches, including chair backs, ② is placed on the ground when sitting and lying, ③ has a large adjustable range of seat height, ④ has no armrest, does not use a soft bag, ⑤ is convenient to use, comfortable, safe and reliable, and ⑥ is environment-friendly.
The main body mechanisms of the three technical schemes are all parallelogram mechanisms, the chair back and the seat frame are linked, the adjustment range of the seat height is smaller, and the requirements of the sitting and lying dual-purpose student chair can be only partially met, or the chair is realized by adding the mechanisms and the complex structures on the basis of the technical schemes, and the adjustment range of the seat height and the chair back angle of the sitting and lying dual-purpose office chair also needs to be increased.
Another technical scheme of the main body mechanism is adopted, and the superior structure is adopted to meet the requirements of the sitting and lying dual-purpose student chair and office chair.
Disclosure of Invention
The invention aims to provide a main body structure of a sitting and lying dual-purpose student chair and a sitting and lying dual-purpose office chair, which adopts a cross main body mechanism, and a chair back and a seat frame can be separated or linked to meet the requirements of being applicable to classrooms, having telescopic sitting and lying dual-purpose student chairs, having large adjustable range of seat height, being convenient to use, being reliable, being comfortable, having safety measures and the like, being applicable to the characteristics of crowding but tidy classrooms, having large difference of student heights and the like, and meeting the requirements of large adjustable range of seat height and chair back angle of the sitting and lying dual-purpose office chair. Therefore, conditions are created for popularizing schools and offices and implementing proper and good afternoon nap modes, the development, physical and mental health and study of students in middle and primary schools are served, conditions are created for proper and good afternoon nap modes of office staff such as teachers and the like, physical and mental health and work of the office staff such as teachers and the like are served, and conditions are created for improving the utilization rate of office places.
In order to achieve the main purpose, the invention is realized by the following technical scheme. The main structure of the sitting and lying dual-purpose student chair and the sitting and lying dual-purpose office chair mainly comprises a sitting and lying switching frame component and a chair back component, wherein the sitting and lying switching frame component mainly comprises a diagonal member component, a side member, a seat member and a locking component, the diagonal member component comprises a diagonal member, a left diagonal member and a right diagonal member, one end of the diagonal member is fixedly connected with the right position of the left diagonal member, the other end of the diagonal member is fixedly connected with the right position of the right diagonal member, the diagonal member component comprises a diagonal member component I and a diagonal member component II, the diagonal member comprises a diagonal member I and a diagonal member II, the diagonal member I and a diagonal member II, one end of the diagonal member I and the right diagonal member I are fixedly connected, the other end of the diagonal member I and the right diagonal member I are fixedly connected with the right position of the diagonal member I, the diagonal member II is rotatably connected with the right and left side member II, the diagonal member I and the right side member II are rotatably connected with the right side member II, the diagonal member II is rotatably connected with the right side member II, the diagonal member I and the right side member II is rotatably connected with the right side member II, the diagonal member I is rotatably connected with the right side member II is rotatably connected with the right side member I, the right side piece constitute by preceding right side piece and back right side piece, preceding right side piece with back right side piece constitute right side and remove kinematic pair, the one end of back left side piece with left side spare I's upper end rotate to be connected, the one end of back right side piece with right side spare I's upper end rotate to be connected, the one end of preceding left side piece with left side spare II's upper end rotate to be connected, the one end of preceding right side piece with right side spare II's upper end rotate to be connected, oblique spare subassembly with the side piece constitute the cross frame subassembly, the left side of seat spare with left side spare be connected, the right side of seat spare with right side spare be connected, the locking subassembly set up the suitable position of cross frame subassembly on. The chair back component mainly comprises a back frame component and a back rest component, the back frame component comprises a back straight piece and a back transverse piece, the back straight piece is a left back straight piece and a right back straight piece, one end of the back transverse piece is fixedly connected to a proper position of the left back straight piece, the other end of the back transverse piece is fixedly connected to a proper position of the right back straight piece, the back rest component is connected to the back frame component, and the chair back component is connected to a proper position of the cross frame component.
The locking component is arranged at a proper position of the cross frame component and is realized by mainly comprising an upper moving component, a lower moving component and a locking component, wherein one end of the upper moving component is connected to a proper position of the inclined component I, one end of the lower moving component is connected to a proper position of the inclined component II, the upper moving component is in moving connection with the lower moving component, and the locking component is connected to the upper moving component and the lower moving component.
The locking assembly is arranged at a proper position of the cross frame assembly and is realized by the fact that the locking assembly is a controllable air spring assembly, the controllable air spring assembly consists of a controllable air spring rod small assembly, a connecting piece I, a connecting piece II and a control button, the controllable air spring rod small assembly consists of a sleeve member and a rod member, the sleeve member and the rod member form a moving kinematic pair, one end of the controllable air spring rod small assembly is connected with the connecting piece I, the other end of the controllable air spring rod small assembly is connected with the connecting piece II, the connecting piece I is connected to the proper position of the inclined piece assembly I, the connecting piece II is connected to the proper position of the inclined piece assembly II, and the control button is arranged at the proper position of the sitting and lying switching frame component.
The locking component is arranged at a proper position of the cross frame component and is realized in such a way that the locking component is a limiting piece which is fixedly connected to one side piece of the front side piece and the rear side piece which form the movable kinematic pair, and the limiting piece is movably connected with the other side piece.
The chair back component is connected to the proper position of the cross frame component, and is realized by fixedly connecting the left back straight component of the chair back component with the upper end of the left inclined component of the cross frame component, and fixedly connecting the right back straight component of the chair back component with the upper end of the right inclined component of the cross frame component.
The chair back component is connected to the proper position of the cross frame component through the tightening component: the left back straight piece of the chair back component is movably connected with the upper end of the left inclined piece I of the cross frame component, the right back straight piece of the chair back component is movably connected with the upper end of the right inclined piece I of the cross frame component, the fastening component consists of a fastening piece, a positioning pin, a positioning piece and an elastic piece, the fastening component is a left fastening component and a right fastening component, the fastening piece is a left fastening piece and a right fastening piece, the positioning pin is a left positioning pin and a right positioning pin, the positioning piece is a left positioning piece and a right positioning piece, the elastic piece is a left elastic piece and a right elastic piece, the left fastening component consists of a left fastening piece, a left positioning pin, a left positioning piece and a left elastic piece, one end of the left fastening piece is rotationally connected to the proper position of the lower end of the left back straight piece of the chair back component through the left positioning pin, the other end of the left fastening piece is provided with a positioning groove, the left positioning piece is a right positioning piece, the right positioning piece is connected to the proper position of the right fastening piece of the right fastening component through the right positioning pin, the other end of the right positioning piece is rotationally connected to the proper position of the right fastening piece of the back straight piece, the other end of the right fastening component is arranged at the proper position of the right fastening piece, the other end of the right fastening component is rotationally connected to the proper position of the right fastening piece through the left positioning piece, and the other end of the right positioning piece is provided with the proper position of the right positioning piece, and the right positioning piece is connected with the proper position of the right positioning piece through the fastening piece, one end of the right elastic piece is connected to the right fixing piece at a proper position, and the other end of the right elastic piece is connected to the right positioning piece.
The left inclined piece and the right inclined piece are in proper nonlinear shapes.
And a buffer piece is arranged at a proper position of the sitting and lying switching frame component.
And a limiting piece and a plurality of limiting holes are arranged at the proper positions of the cross frame assembly.
The proper position of the lower part of the inclined component is provided with a pulley.
Through the structure, the operation and the action of the main body structure of the sitting and lying dual-purpose student chair and the sitting and lying dual-purpose office chair are two types of sitting and lying mutual cutting and seat piece height adjustment.
I) The typical operation and action of sitting and lying mutual cutting can be divided into two types by using different locking assemblies, wherein ① locking assemblies are controllable air spring assemblies, ② locking assemblies are limiting members, the operation and action of sitting and lying mutual cutting can be divided into ① chair back components which are connected with cross frame assemblies by using different connection modes of the chair back components, namely the chair back components and the sitting and lying switching frame components are separated, namely the sitting and lying switching frame components and the chair back components are operated respectively, left back straight members and right back straight members of ② chair back components are fixedly connected with the upper ends of left inclined members and right inclined members of the cross frame components respectively, and the chair back components and the sitting and lying switching components are linked. The operation and action of the locking assembly, which is a controllable air spring assembly and a limiting member, for mutual cutting of sitting and lying will be described below by taking the transfer of the chair back member and the sitting and lying switching frame member as an example.
1. The locking assembly is a controllable gas spring assembly, and the operation and action of the locking assembly are as follows.
The seat back component is positioned and locked by the locking component, namely the lower ends of the left back straight piece and the right back straight piece are respectively connected with the left locking piece and the right locking piece in a rotating way through the left positioning pin and the right positioning pin, and the left locking piece and the right locking piece are respectively clamped by the left positioning piece and the right positioning piece under the elastic force of the left elastic piece and the right elastic piece respectively, so that the seat back component is fixed in a sitting state. The sitting and lying switching frame component is provided with a buffer piece. When the set backrest sets are a movable backrest and a fixed backrest, the movable backrest is positioned at the lower position.
There are two methods of operation to switch from the sitting position to the lying position.
In the first operation method, a person sits on a chair and operates a control button of a controllable gas spring assembly, and the controllable gas spring assembly still has a constant force after losing locking force. The human gravity overcomes the constant force of the controllable air spring component and the gradually increased force of the buffer component, the seat component translates and stretches downwards and forwards along with the moving kinematic pair and the inclined component, the human gravity center moves forwards along with the moving, and the supporting points of the inclined component I and the inclined component II move forwards and backwards respectively. In the proper position, the control button of the controllable gas spring assembly is released, and the seat member is locked in the lying position by the controllable gas spring assembly. The left fixing piece and the right fixing piece are operated to overcome the elasticity of the left elastic piece and the right elastic piece, the locating grooves of the left fixing piece and the right fixing piece are separated from the left locating piece and the right locating piece respectively, the back of the chair component is rotated backwards, the left locating pin and the right locating pin are respectively abutted against the lower surfaces of the rear left side piece and the rear right side piece, the back of the chair component is located in a lying position, and the movable back of the chair component is pulled to a proper position.
The second operation method is that the person sits on or leaves the chair, the left fastening piece and the right fastening piece are operated, the elasticity of the left elastic piece and the right elastic piece is overcome, the positioning grooves of the left fastening piece and the right fastening piece are separated from the left positioning piece and the right positioning piece respectively, the back of the chair is rotated, the left positioning pin and the right positioning pin are respectively abutted against the lower surfaces of the left rear side piece and the right rear side piece and positioned at the lying position, the movable back piece is pulled up to the proper position, the person sits on the chair, the control button of the controllable air spring assembly is operated, the constant force is still remained after the controllable air spring assembly loses the locking force, the human gravity overcomes the constant force of the controllable air spring assembly, and the gradually increased force of the buffer piece enables the seat piece to translate downwards and forwards along with the moving pair and the inclined piece assembly, and the human gravity center moves forwards along with the moving pair. Simultaneously, the supporting points of the diagonal member component I and the diagonal member component II respectively move forwards and backwards, and the movable backrest is adjusted to a proper lying position.
After the operation is finished, the main body structure of the sitting and lying dual-purpose student chair and the office chair is in a complete stretching state when lying, namely, when the seat part moves forward and horizontally stretches along with the moving pair and the inclined part component, the gravity center of a human body moves forward, the supporting points of the inclined part component I and the inclined part component II stretch forward and backward respectively, the contact area between the inclined part component I and the ground is increased, the movable backrest part stretches to a proper lying position, so that the lying position is stable, reliable and comfortable, and lying of feet on the ground is realized. Lying with feet resting on the ground can relax the lower limbs of the human body, and is beneficial to the running of the channels and collaterals and blood vessels.
There are also two methods of operation to switch from lying to sitting.
The first operation method is that the person leaves the chair and operates the control button of the controllable gas spring, and the controllable gas spring still has a constant force after losing the locking force. The seat part is moved back to the seat position, and is locked by the locking force of the controllable air spring, so that the seat back part rotates forwards, the left fastening part and the right fastening part move backwards, and under the respective action of the elasticity of the left elastic part and the right elastic part, the left positioning part and the right positioning part are clamped by the positioning grooves of the left fastening part and the right fastening part respectively, the seat back part is fixed in the seat position state, and the movable back part is contracted to the lower side.
And a second operation method comprises the steps of operating the chair back component according to the method, and then operating the sitting and lying switching frame component according to the method. Also, the reclining position is switched to the sitting position by retracting the reclining member assembly, the seat member and the seatback frame member.
When the buffer piece is arranged on the sitting and lying switching frame component, the sitting and lying switching is stable and smooth.
2. The locking assembly operates and acts as follows for the mutual cutting of the sitting and lying of the limiting member.
When the locking assembly is a limiting member, the seat-and-recliner bracket member is preferably provided with a cushioning member, and the cushioning member preferably has a spring force sufficient to exert an upward force on the seat member.
In sitting position, the limiting piece combines the front side piece and the rear side piece which form the moving kinematic pair. The seat back member is positioned by a tightening assembly. The movable backrest is in the down position.
There are two methods of operation to switch from the sitting position to the lying position.
The first operation method is that the limiting piece is firstly operated, the front side piece and the rear side piece which form the moving pair are released, the elastic force of the buffer piece is overcome by manpower, the seat piece translates and stretches downwards and forwards along with the moving pair and the inclined piece component, and the supporting points of the inclined piece component I and the inclined piece component II move forwards and backwards respectively. In place, the limiting piece is combined with the front side piece and the rear side piece which form the moving kinematic pair, and the seat piece is locked. And then the left tightening piece and the right tightening piece are operated, the elasticity of the left elastic piece and the right elastic piece is overcome, the positioning grooves of the left tightening piece and the right tightening piece are separated from the left positioning piece and the right positioning piece respectively, the back of the chair is rotated, the left positioning pin and the right positioning pin are respectively abutted against the lower surfaces of the rear left side piece and the rear right side piece, and the chair is positioned at a lying position.
The second operation method is that the person sits on or leaves the chair, operates the left fastening piece and the right fastening piece, overcomes the elasticity of the left elastic piece and the right elastic piece, and the positioning grooves of the left fastening piece and the right fastening piece are separated from the left positioning piece and the right positioning piece respectively, so that the back of the chair is rotated, and the left positioning pin and the right positioning pin are respectively abutted against the lower surfaces of the left back piece and the right back piece and positioned in a lying position. And then the limiting piece is operated, the front side piece and the rear side piece which form the moving kinematic pair are loosened, the elastic force of the elastic piece is overcome manually, the seat piece horizontally moves and stretches downwards and forwards along with the moving pair and the inclined piece component, and the supporting points of the inclined piece component I and the inclined piece component II respectively move forwards and backwards. In place, the limiting piece is combined with the front side piece and the rear side piece which form the moving kinematic pair, and the seat piece is locked. The movable backrest is adjusted to a proper lying position.
There are also two methods of operation to switch from lying to sitting.
The first operation method is that the limiting piece is firstly operated, the front side piece and the rear side piece which form the moving kinematic pair are loosened, under the action of the elastic pushing of the buffer piece, the seat piece translates and contracts upwards and backwards along with the moving pair and the inclined piece component, the supporting points of the inclined piece component I and the inclined piece component II contract backwards and forwards respectively, and the occupied area is reduced. After the seat is restored, the limiting piece combines the front side piece and the rear side piece which form the moving kinematic pair, and the seat piece is locked. And then the chair back part rotates forwards, the left fastening piece and the right fastening piece move backwards, and the left positioning piece and the right positioning piece are respectively clamped by the positioning grooves of the left fastening piece and the right fastening piece under the respective action of the elasticity of the left elastic piece and the right elastic piece, so that the chair back part is fixed in a sitting state, and the movable backrest piece is contracted to the lower side.
And a second operation method comprises the steps of operating the chair back component according to the method, and then operating the sitting and lying switching frame component according to the method. Also, the reclining position is switched to the sitting position by retracting the recliner assembly, the seat member and the seat back member.
II) operation of seat height adjustment. The structural characteristics of the crossed main body mechanism and the locking assembly of the technical scheme enable the seat piece to have the advantage of large height adjustment under the condition that the operation stroke of the locking assembly is small. The separate operation of the sitting and lying switching frame part and the back part again enables this advantage to be fully exploited. The locking assembly is operated, and the seat piece is locked after being lowered to a certain position or the lowest position. ① And ②, inserting the limiting piece into the proper limiting hole when the proper position of the inclined piece component is provided with the plurality of limiting holes. And operating the locking assembly, and pushing the seat part upwards by the constant force of the locking assembly until the relative positions of the front side part and the rear side part forming the moving kinematic pair are determined, wherein the seat part is limited at the required height by the limiting part, and the adjustment of the height of the seat part is completed.
When the left inclined piece and the right inclined piece are in proper non-straight lines, the inclined piece component I and the inclined piece component II which are in a cross shape can be prevented from possibly damaging human bodies when the sitting and lying switch is carried out.
When the lower part of the diagonal member assembly is provided with the pulley/universal pulley, the friction damage of the lower part of the diagonal member assembly to the ground is greatly reduced when the sitting and lying are switched, and the chair is convenient to move/carry.
In summary, the invention adopts the crossed main body mechanism, the chair back and the seat frame can be separated or linked to meet the requirements of telescopic sitting and lying dual-purpose student chair, large adjustable range of seat height, convenient use, reliability, comfort, safety measures and the like, so as to adapt to the characteristics of crowded classrooms, tidy and large difference of the heights of students and meet the requirements of enlarging the adjustment range of the seat height and the adjustment of the angle of the chair back of the sitting and lying dual-purpose student chair. Therefore, conditions are created for popularizing schools and offices and implementing proper and good afternoon nap modes, the development, physical and mental health and study of students in middle and primary schools are served, conditions are created for proper and good afternoon nap modes of office staff such as teachers and the like, the physical and mental health and work of the office staff such as teachers and the like are served, and the utilization rate of office places is improved.
Drawings
The following describes the preferred embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a schematic left view showing a preferred embodiment of a main body structure of a sitting and lying dual-purpose student chair and a sitting and lying dual-purpose office chair;
fig. 2 is a schematic view in direction a of fig. 1 with the seat member removed.
Detailed Description
Examples of the present invention are described in detail below with reference to the accompanying drawings.
See fig. 1 and 2. The example mainly comprises a sitting and lying switching frame component 1 and a chair back component 2, wherein the sitting and lying switching frame component 1 mainly comprises a diagonal member component 1-1, a side member 2-1, a seat member 3-1 and a locking component 4-1, the diagonal member component 1-1 comprises a transverse member 1-1-1, a left diagonal member 2-1-1 and a right diagonal member 3-1-1, one end of the transverse member 1-1 (shown by a dotted line in fig. 1) is fixedly connected with the left diagonal member 2-1-1, the other end of the transverse member 1-1-1 is fixedly connected with the right diagonal member 3-1-1, the diagonal member component 1-1 is a diagonal member component I-1-1 and a diagonal member component II-1-1, and the diagonal member component I-1-1 is formed by a transverse member I1-I-1-1 (shown by a dotted line in fig. 1), The left inclined part I2-I-1-1 and the right inclined part I3-I-1-1 are formed, one end of the transverse part I1-I-1-1 is fixedly connected with the left inclined part I2-I-1-1, the other end of the transverse part I1-I-1-1 is fixedly connected with the right inclined part I3-I-1-1, the inclined part component II-1-1 consists of the transverse part II 1-II-1-1 (shown by a broken line in the figure 1), the left inclined part II 2-II-1-1 and the right inclined part II 3-II-1-1, one end of the transverse part II 1-II-1-1 is fixedly connected with the left inclined part II 2-II-1-1, the other end of the transverse part II-1-1 is fixedly connected with the right inclined part II 3-II-1-1, and the left inclined part 2-1-1 and the right inclined part 3-1-1 are in a curve shape, namely the left inclined part I2-1-1, Right diagonal member I3-I-1-1 and left diagonal member II 2-II-1-1, The right inclined part II 3-II-1-1 is in a curve, the left inclined part I2-I-1-1 and the left inclined part II 2-II-1-1 are in rotary connection, the right inclined part I3-I-1-1 and the right inclined part II 3-II-1-1 are in rotary connection, the inclined part component I-1-1 and the inclined part component II-1-1 form a cross shape through rotary connection, the side part 2-1 is a left side part Z-2-1 and a right side part Y-2-1, the side part 2-1 is composed of a front side part 1-2-1 and a rear side part 2-2-1 (shown by a dotted line in fig. 1), the front side part 1-2-1 and the rear side part 2-2-1 form a movable pair, the left side part Z-2-1 is composed of a front left side part 1-Z-2-1 and a rear left side part 2-1 (shown by a dotted line in fig. 2), the front left side part 1-Z-2-1 and the rear side part 2-1 is composed of a movable pair of a left side part Z-2-1 and a rear side part 2-1 and a right side part 2-1 is composed of a movable pair of a front side part 1-2-1-1 and a rear side part 2-1-2-1 and a rear part Y-1-1 are composed of a movable pair of the front side part 2-2-1-1 and a rear part 2-2-1-1 and a rear part is shown by a right side part, the rear left side piece 2-Z-2-1 and the rear right side piece 2-Y-2-1 are respectively provided with 4 limiting holes K (figure 1, Shown in broken lines in fig. 2) and each of the stoppers X, one end of the rear left side member 2-Z-2-1 is rotatably connected to the upper end of the left diagonal member I2-I-1-1, one end of the rear right side member 2-Y-2-1 is rotatably connected to the upper end of the right diagonal member I3-I-1-1, one end of the front left side member 1-Z-2-1 is rotatably connected to the upper end of the left diagonal member II 2-II-1-1, one end of the front right side member 1-Y-2-1 is rotatably connected to the upper end of the right diagonal member II 3-II-1-1, the diagonal member assembly 1-1 and the side members 2-1 constitute a cross frame assembly J, the left side of the seat member 3-1 is connected to the left side member Z-2-1, the right side of the seat member 3-1 is connected to the right side member Y-2-1, the locking assembly 4-1 is a controllable gas spring assembly K-4-1, the controllable gas spring assembly K-4-1 is a controllable gas lever assembly K-4-1, a connecting piece I2-K-4-1 (shown by a dotted line in figure 1), The connecting piece II 3-K-4-1 (shown by a dotted line in the figure 1) and the control button 4-K-4-1 are formed, the controllable air spring rod small component 1-K-4-1 consists of a sleeve piece 1-1-K-4-1 and a rod piece 2-1-K-4-1, the sleeve piece 1-1-K-4-1 and the rod piece 2-1-K-4-1 form a moving kinematic pair, one end of the controllable air spring rod small component 1-K-4-1 is movably connected with the connecting piece I2-K-4-1, the other end of the controllable air spring rod small component 1-K-4-1 is movably connected with the connecting piece II 3-K-4-1, the connecting piece I2-K-4-1 is fixedly connected to the transverse piece I1-I-1-1 of the inclined piece component I-1, the connecting piece II 3-K-4-1 is fixedly connected to the transverse piece II 1-II-1-1 of the inclined piece component II-1, and the control button 4-K-1 is fixedly connected to the seat piece 3-1. The buffer part H is provided with two tension springs L, two ends of one tension spring L are respectively connected to the right inclined part I3-I-1-1 and the right inclined part II 3-II-1-1, and two ends of the other tension spring L are respectively connected to the left inclined part I2-I-1-1 and the left inclined part II 2-II-1-1. The rear left side piece 2-Z-2-1 and the rear right side piece 2-Y-2-1 are provided with a limiting piece X and a plurality of limiting holes K. The damper H may also be provided on the rod 2-1-K-4-1 of the controllable gas spring assembly K-4-1 (not shown). The upper right two-dot chain line in fig. 1 shows a state when the seatback member 2 is in the reclined position.
The chair back component 2 mainly comprises a back frame component 1-2 and a back rest component 2-2, wherein the back frame component 1-2 comprises a back straight component 1-1-2 and a back transverse component 2-1-2 (shown by a dotted line in figure 1), the back straight component 1-1-2 comprises a left back straight component 1-1-1-2 and a right back straight component 2-1-2, one end of the back transverse component 2-1-2 is fixedly connected with the left back straight component 1-1-2, the other end of the back transverse component 2-1-2 is fixedly connected with the right back straight component 2-1-1-2, the back rest component 2-2 comprises a fixed back rest component 1-2-2 and a movable back rest component 2-2-2, the fixed back rest component 1-2-2 is fixedly connected to the lower part of the back frame component 1-2, and the movable back rest component 2-2 is movably connected to the upper part of the back frame component 1-2. The chair back part 2 is connected with the cross frame assembly J through the tightening assembly 3-3, the left back straight part 1-1-2 of the chair back part 2 is rotationally connected with the left inclined part I2-I-1-1 of the cross frame assembly J, the right back straight part 2-1-1-2 of the chair back part 2 is rotationally connected with the right inclined part I3-I-1-1 of the cross frame assembly J, and the tightening assembly 3-3 is formed by the tightening part 1-3-3, the positioning pin 2-3-3, The positioning piece 3-3-3 and the elastic piece 4-3-3 are formed, the tightening component 3-3 is a left tightening component Z-3-3 and a right tightening component Y-3-3, the tightening piece 1-3-3 is a left tightening component Z-1-3-3 and a right tightening component Y-1-3-3, the positioning pin 2-3-3 is a left positioning pin Z-2-3-3 and a right positioning pin Y-2-3-3, the positioning piece 3-3 is a left positioning component Z-3-3-3 and a right positioning component Y-3-3, the elastic piece 4-3-3 is a left elastic piece Z-4-3-3 and a right elastic piece Y-4-3-3, and the left tightening component Z-3-3 is formed by a left tightening component Z-1-3-3, Left locating pin Z-2-3-3, The left positioning piece Z-3-3 and the left elastic piece Z-4-3-3 are formed, one end of the left fastening piece Z-1-3-3 is rotationally connected to the lower end of the left back straight piece 1-1-1-2 through a left positioning pin Z-2-3-3, the other end of the left fastening piece Z-1-3-3 is provided with a positioning groove C (shown by a broken line in figure 1), the left positioning piece Z-3-3-3 is fixedly connected to the rear left side piece 2-Z-2-1, one end of the left elastic piece Z-4-3-3 is connected to the left fastening piece Z-1-3-3, the other end of the left elastic piece Z-4-3-3 is connected to the left positioning piece Z-3-3, the right fastening component Y-3-3 is formed by a right fastening piece Y-1-3-3, The right locating pin Y-2-3-3, right locating piece Y-3-3 and right elastic piece Y-4-3-3 are constituteed, right side is decided tight Y-1-3-3 one end and is rotated through right locating pin Y-2-3-3 and connect right back straight piece 2-1-1-2 lower extreme, right side is decided tight Y-1-3-3 the other end and is provided with constant head tank C, right locating piece Y-3-3 links firmly on back right side piece 2-Y-2-1, right elastic piece Y-4-3-3's one end is connected on right side and decides tight Y-1-3-3, right elastic piece Y-4-3-3's other end is connected on right locating piece Y-3-3-3. the transverse piece I1-I-1-1 is provided with a universal pulley W.
Through the structure, the operation and the action of the main body structure of the sitting and lying dual-purpose student chair and the office chair are two types of sitting and lying mutual cutting and seat piece height adjustment.
I) Operation and action of mutual cutting of sitting and lying.
When sitting, the sitting and lying switching frame component 1 is positioned and locked by the controllable air spring component K-4-1, the chair back component 2 is positioned and locked by the fastening component 3-3, namely the lower ends of the left back straight component 1-1-1-2 and the right back straight component 2-1-1-2 are respectively connected with the left fastening component Z-1-3-3 and the right fastening component Y-1-3 through the rotation of the left positioning pin Z-2-3-3 and the right positioning pin Y-2-3-3, and the left fastening component Z-1-3-3 and the right fastening component Y-1-3-3 are respectively clamped by the positioning groove C at one end of the chair back component under the respective action of the elasticity of the left elastic component Z-4-3-3 and the right elastic component Y-4-3-3 so that the chair back component 2 is fixed in a sitting state. The two tension springs L provided on the cross frame assembly J are in a proper tension. The movable backrest 2-2 is in the down position.
There are two methods of operation to switch from the sitting position to the lying position.
In the first operation method, a person sits on a chair and operates the control button 4-K-4-1 of the controllable gas spring assembly K-4-1, and the controllable gas spring assembly K-4-1 still has a constant force after losing locking force. The gravity of the human body overcomes the constant force of the controllable gas spring assembly K-4-1 and the gradually increased elastic force of the two tension springs L, the seat part 3-1 horizontally moves and stretches downwards and forwards along with the moving kinematic pair and the inclined part assembly 1-1, the gravity center of the human body moves forwards along with the moving kinematic pair, and the supporting points of the inclined part assembly I-1-1 and the inclined part assembly II-1-1 respectively move forwards and backwards. In the appropriate position, the control button 4-K-4-1 of the controllable gas spring assembly K-4-1 is released and the seat member 3-1 is locked by the controllable gas spring assembly K-4-1. The left tightening piece Z-1-3-3 and the right tightening piece Y-1-3-3 are operated to overcome the elasticity of the left elastic piece Z-4-3-3 and the right elastic piece Y-4-3-3, the positioning grooves C of the left tightening piece Z-1-3-3 and the right tightening piece Y-1-3 are separated from the left positioning piece Z-3-3 and the right positioning piece Y-3-3 respectively, the back rotation of the chair back part 1 is realized, the left positioning pin Z-2-3-3 and the right positioning pin Y-2-3 respectively lean against the lower surfaces of the rear left side piece 2-Z-2-1 and the rear right side piece 2-Y-2-1, are positioned at the lying positions, and the movable backrest piece 2-2-2 is pulled up to the proper positions.
The second operation method is that a person sits on or leaves the chair, operates the left fastening piece Z-1-3-3 and the right fastening piece Y-1-3-3, overcomes the elasticity of the left elastic piece Z-4-3-3 and the right elastic piece Y-4-3-3, the positioning grooves C of the left fastening piece Z-1-3-3 and the right fastening piece Y-1-3 are separated from the left positioning piece Z-3-3 and the right positioning piece Y-3-3 respectively, the back rotation of the chair back part 1 is realized, the left positioning pin Z-2-3-3 and the right positioning pin Y-2-3 respectively lean against the lower surfaces of the rear left side piece Z-2-1 and the rear right side piece Y-2-2-1, are positioned in a lying position, and the movable back part 2-2-2 is pulled up to a proper position; the person sits on the chair, the control button 4-K-4-1 of the controllable gas spring assembly K-4-1 is operated, the controllable gas spring assembly K-4-1 still has a constant force after losing the locking force, and the gravity of the human body overcomes the constant force of the controllable gas spring assembly K-4-1 and the gradually increased elastic force of the two tension springs L, so that the seat part 3-1 translates and stretches downwards and forwards along with the moving pair and the inclined part assembly 1-1, and the gravity center of the human body moves forwards along with the moving pair and the inclined part assembly 1-1. Simultaneously, the supporting points of the diagonal member component I-1-1 and the diagonal member component II-1-1 respectively move forwards and backwards, and the movable backrest 2-2 is adjusted to a proper lying position.
After the operation is finished, the main body structure of the sitting and lying dual-purpose student chair and the office chair is in a fully-extended state when in a lying position, the seat part 3-1 moves forward along with the moving pair and the inclined part component 1-1 when horizontally extending downwards and forwards, the supporting points of the inclined part component I-1-1 and the inclined part component II-1-1 respectively extend forwards and backwards, the grounding area is increased, the movable backrest 2-2-2 extends to a proper lying position, so that the lying position is stable, reliable and comfortable, and the lying position with feet resting on the ground is realized. Lying with feet resting on the ground can relax the lower limbs of the human body, and is beneficial to the running of the channels and collaterals and blood vessels.
There are also two methods of operation to switch from lying to sitting.
The first method of operation is that a person leaves the chair and operates the control button 4-K-4-1 of the controllable gas spring assembly K-4-1, and the controllable gas spring assembly K-4-1 still has a constant force after losing the locking force. The constant force of the controllable air spring assembly K-4-1 pushes the inclined piece assembly 1-1 to retract inwards, the occupied area is reduced, the seat piece 3-1 translates and contracts upwards and backwards along with the moving pair and the inclined piece assembly 1-1 to restore to a sitting position, the seat piece is locked by the locking force of the controllable air spring assembly K-4-1, the seat back part 2 rotates forwards, the left fastening piece Z-1-3-3 and the right fastening piece Y-1-3 move backwards, and under the action of the elasticity of the left elastic piece Z-4-3-3 and the right elastic piece Y-4-3-3, the locating grooves C of the left fastening piece Z-1-3-3 and the right fastening piece Y-1-3 clamp the left locating piece Z-3-3-3 and the right locating piece Y-3-3 respectively, the seat back part 2 is fixed in the sitting position state, and the movable seat back part 2-2 contracts to the lower face.
A second method of operation is to operate the back member 2 first as described above and then the sitting and lying switching frame member 1 as described above. Also, the reclining position is switched to the sitting position by retracting the recliner assembly 1-1, the seat member 3-1, and the seatback member 2.
The two tension springs L are arranged, so that sitting and lying can be switched smoothly. The universal pulleys W arranged at the lower ends of the left inclined piece 2-1-1 and the right inclined piece 3-1-1 can greatly reduce friction damage of the lower part of the inclined piece assembly to the ground when the sitting and lying are switched, and facilitate the movement/moving of the chair. The left inclined piece 2-1-1 and the right inclined piece 3-1-1 are in curves, so that the inclined piece component II-1-1 and the inclined piece component II-1-1 which are in a cross shape can be prevented from possibly damaging a human body when the sitting and lying switch is carried out.
II) operation of seat height adjustment. The technical scheme has the structural characteristics that the height adjustment of the seat part is large under the condition that the operation stroke of the controllable gas spring assembly K-4-1 is small. The separate operation of the sitting and lying switching frame part 1 and the back part 2 again allows this advantage to be fully exploited. The controllable gas spring assembly K-4-1 is operated, and the seat member 3-1 is locked after being lowered to a certain position or the lowest position. A plurality of limiting holes K are arranged on the rear left side piece 2-Z-2-1 and the rear right side piece 2-Y-2-1. Two limiting pieces X are respectively inserted into proper holes of the rear left side piece 2-Z-2-1 and the rear right side piece 2-Y-2-1. And then the controllable gas spring assembly K-4-1 is operated, the seat part 3-1 moves upwards under the action of the constant force of the controllable gas spring assembly K-4-1 and the elastic force of the two tension springs L until the relative positions of the front side part 1-2-1 and the rear side part 2-2-1 forming the moving kinematic pair are determined, the seat part 3-1 is limited at the required height by the limiting part X, and the height adjustment of the seat part 3-1 is completed.
In summary, the invention adopts the crossed main body mechanism, the chair back and the seat frame can be separated or linked to meet the requirements of telescopic sitting and lying dual-purpose student chair, large adjustable range of seat height, convenient use, reliability, comfort, safety measures and the like, so as to adapt to the characteristics of crowded classrooms, tidy and large difference of the heights of students and meet the requirements of enlarging the adjustment range of the seat height and the adjustment of the angle of the chair back of the sitting and lying dual-purpose student chair. Therefore, conditions are created for popularizing schools and offices and implementing proper and good afternoon nap modes, the development, physical and mental health and study of students in middle and primary schools are served, conditions are created for proper and good afternoon nap modes of office staff such as teachers and the like, the physical and mental health and work of the office staff such as teachers and the like are served, and the utilization rate of office places is improved.
Claims (5)
1. A main body structure of a sitting and lying dual-purpose student chair and a sitting and lying dual-purpose office chair mainly comprises a sitting and lying switching frame component and a chair back component, and is characterized in that the sitting and lying switching frame component (1) mainly comprises a diagonal member component (1-1), side members (2-1), a seat member (3-1) and a locking component (4-1), wherein the diagonal member component (1-1) comprises a transverse member (1-1-1), The left inclined piece (2-1-1) and the right inclined piece (3-1-1) are formed, one end of the transverse piece (1-1-1) is fixedly connected with the proper position of the left inclined piece (2-1-1), the other end of the transverse piece (1-1-1) is fixedly connected with the proper position of the right inclined piece (3-1-1), the inclined piece component (1-1) is an inclined piece component I (I-1-1) and an inclined piece component II (II-1-1), the transverse piece (1-1-1) is an inclined piece I (1-I-1) and an inclined piece II (1-II-1-1), the left inclined piece (2-1-1) is an inclined piece I (2-I-1-1) and an inclined piece II (2-II-1-1) which are fixedly connected with each other, the right inclined piece (3-1-1) is an inclined piece I (3-I-1-1) and an inclined piece II (II-1) which are fixedly connected with the proper position of the transverse piece I (1-1-1) and the inclined piece I (1-1) respectively, the other end of the transverse member I (1-I-1-1) is fixedly connected with the right inclined member I (3-I-1-1) at a proper position, and thus forms the inclined member assembly I (I-1-1), one end of the transverse member II (1-II-1-1) is fixedly connected with the right inclined member II (2-II-1-1) at a proper position, the other end of the transverse member II (1-II-1-1) is fixedly connected with the right inclined member II (3-II-1-1) at a proper position, and thus forms the inclined member assembly II (II-1-1), the right inclined member I (2-I-1-1) is rotatably connected with the right inclined member II (2-II-1-1) at a proper position, the right inclined member I (3-I-1-1) is rotatably connected with the right inclined member II (3-II-1-1) at a proper position, and the inclined member I (1-1) is rotatably connected with the right inclined member I (1-1) at a proper position, and the inclined member I (2-1-1) is rotatably connected with the inclined member I (1-1) at a proper position, the side piece (2-1) is composed of a front side piece (1-2-1) and a rear side piece (2-2-1), the front side piece (1-2-1) and the rear side piece (2-2-1) form a moving kinematic pair, the left side piece (Z-2-1) is composed of a front left side piece (1-Z-2-1) and a rear left side piece (2-Z-2-1), the front left side piece (1-Z-2-1) and the rear left side piece (2-Z-2-1) form a left moving kinematic pair, the right side piece (Y-2-1) is composed of a front right side piece (1-Y-2-1) and a rear right side piece (2-Y-2-1), the front right side piece (1-Y-2-1) and the rear right side piece (2-Y-2-1) form a right moving kinematic pair, the left side piece (Z-1) and the rear left side piece (2-Z-2-1) form a left moving kinematic pair, the left side piece (Y-2-1) and the right side piece (Z-2-1) are connected with one end of the left side piece (Z-1) and the right side piece (I) of the right side piece (2-1) and the right side piece (2-1) which are connected with one end (I) of the right side piece (1) and the right side piece (1-1) of the right side piece (2-2-1) and the right side piece (2-1-1), one end of the front left side piece (1-Z-2-1) is rotationally connected with the upper end of the left inclined piece II (2-II-1-1), one end of the front right side piece (1-Y-2-1) is rotationally connected with the upper end of the right inclined piece II (3-II-1-1), the inclined piece assembly (1-1) and the side piece (2-1) form a cross frame assembly (J), the left side of the seat piece (3-1) is connected with the left side piece (Z-2-1), the right side of the seat piece (3-1) is connected with the right side piece (Y-2-1), the locking assembly (4-1) is a controllable gas spring assembly (K-4-1), and the controllable gas spring assembly (K-4-1) is formed by a controllable gas spring small rod assembly (1-K-4-1), a connecting piece I (2-K-4-1), The connecting piece II (3-K-4-1) and the control button (4-K-4-1) are formed, the controllable air spring rod small component (1-K-4-1) is formed by a sleeve piece (1-1-K-4-1) and a rod piece (2-1-K-4-1), the sleeve piece (1-1-K-4-1) and the rod piece (2-1-K-4-1) form a moving kinematic pair, one end of the controllable air spring rod small component (1-K-4-1) is connected with the connecting piece I (2-K-4-1), the other end of the controllable air spring rod small component (1-K-4-1) is connected with the connecting piece II (3-K-4-1), the connecting piece I (2-K-4-1) is connected at a proper position of the inclined piece component I (1-1), the connecting piece II (3-K-4-1) is connected with the inclined piece I (1-1) at a proper position of the inclined piece II, and the control button (4-1) is arranged at the proper position of the inclined piece II (1-1-1), the backrest part (2) mainly comprises a back frame assembly (1-2) and a backrest part assembly (2-2), the back frame assembly (1-2) comprises a back straight part (1-1-2) and a back transverse part (2-1-2), the back straight part (1-1-2) is a left back straight part (1-1-2) and a right back straight part (2-1-1-2), one end of the back transverse part (2-1-2) is fixedly connected to a proper position of the left back straight part (1-1-1-2), the other end of the back transverse part (2-1-2) is fixedly connected to a proper position of the right back straight part (2-1-1-2), the backrest part assembly (2-2) is connected to the back frame assembly (1-2), the left back straight part (1-1-2) of the backrest part is fixedly connected to a right inclined part (I) of the backrest part (1-1-2), and one end of the backrest part (2) is fixedly connected to the right inclined part I of the backrest part (1-1-2) of the backrest part (1-2), the tightening component (3-3) is composed of a tightening piece (1-3-3), a positioning pin (2-3-3), Locating piece (3-3-3) and elastic component (4-3-3), tight subassembly (3-3) of deciding for left tight subassembly (Z-3-3) and tight subassembly (Y-3-3) of right side, tight subassembly (1-3-3) decide for left tight subassembly (Z-1-3-3) and tight subassembly (Y-1-3) of right side, locating pin (2-3-3) be left locating pin (Z-2-3) and right locating pin (Y-2-3), locating piece (3-3-3) be left locating piece (Z-3-3) and right locating piece (Y-3-3), elastic component (4-3-3) be left elastic component (Z-4-3) and right elastic component (Y-4-3-3), tight subassembly (Z-3-3) by left tight subassembly (Z-3-3), left locating pin (Z-2-3-3), The left positioning piece (Z-3-3-3) and the left elastic piece (Z-4-3-3) are formed, one end of the left positioning piece (Z-1-3-3) is rotatably connected to a proper position of the lower end of the left back straight piece (1-1-1-2) of the chair back component (2) through the left positioning pin (Z-2-3-3), the other end of the left positioning piece (Z-1-3-3) is provided with a positioning groove (C), the left positioning piece (Z-3-3-3) is fixedly connected to a proper position of the rear left side piece (2-Z-2-1) of the cross frame component (J), one end of the left elastic piece (Z-4-3-3) is connected to a proper position of the left positioning piece (Z-1-3-3), the other end of the left elastic piece (Z-4-3) is connected to the left positioning piece (Z-3-3-3), and the left elastic piece (Z-3-3-3) is fixedly connected to a proper position of the rear left side piece (2-Z-2-3-3) of the cross frame component (J), and the left elastic piece (Z-4-3-3-3) is fixedly connected to the proper position of the right side piece (Z-3-3-3) right locating pin (Y-2-3-3), The right positioning piece (Y-3-3-3) and the right elastic piece (Y-4-3-3) are formed, one end of the right positioning piece (Y-1-3-3) is rotationally connected to a proper position of the lower end of the right back straight piece (2-1-1-2) of the chair back component (2) through a right positioning pin (Y-2-3-3), the other end of the right positioning piece (Y-1-3-3) is provided with a positioning groove (C), the right positioning piece (Y-3-3) is arranged at a proper position of the rear right side piece (2-Y-2-1) of the cross frame component (J), one end of the right elastic piece (Y-4-3-3) is connected to the proper position of the right positioning piece (Y-1-3-3), and the other end of the right elastic piece (Y-4-3-3) is connected to the right positioning piece (Y-3-3-3).
2. The main structure of the sitting and lying dual-purpose student chair and the sitting and lying dual-purpose office chair according to claim 1 is characterized in that the left inclined piece (2-1-1) and the right inclined piece (3-1-1) are in proper non-linear shapes.
3. The main structure of the sitting and lying dual-purpose student chair and the sitting and lying dual-purpose office chair according to claim 1 is characterized in that a buffer (H) is arranged at a proper position of the sitting and lying switching frame component (1).
4. The main structure of the sitting and lying dual-purpose student chair and the sitting and lying dual-purpose office chair according to claim 1, wherein the proper position of the cross frame assembly (J) is provided with a limiting piece (X) and a plurality of limiting holes (K).
5. The main body structure of the sitting and lying dual-purpose student chair and the sitting and lying dual-purpose office chair according to claim 1, wherein the proper position of the lower part of the diagonal member assembly (1-1) is provided with a pulley (W).
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| CN111728406A (en) * | 2020-07-08 | 2020-10-02 | 江山市奇栖正机电科技有限公司 | The back of a reclining chair for students |
| CN111904191A (en) * | 2020-08-20 | 2020-11-10 | 江山市奇栖正机电科技有限公司 | Linkage mechanism of seat back and seat |
| CN112493739B (en) * | 2020-12-31 | 2024-12-10 | 南京智书云房科技有限公司 | Main structure of a sitting and lying seat |
| CN113229661A (en) * | 2021-06-17 | 2021-08-10 | 江山市奇栖正机电科技有限公司 | Chair that helping hand human body resets is lain and is held in palm |
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| CN212995469U (en) * | 2020-01-18 | 2021-04-20 | 江山市奇栖正机电科技有限公司 | Main body structure of sitting and lying dual-purpose student chair and sitting and lying dual-purpose office chair |
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| DE7531999U (en) * | 1975-10-08 | 1976-04-15 | Kurz Gmbh, 7120 Bietigheim | FURNITURE WITH HEIGHT-ADJUSTABLE SEAT PART |
| US20110049957A1 (en) * | 2009-11-13 | 2011-03-03 | Evan Luwisch | Chaise Lounge Having A Gas Cylinder |
| CN110279243A (en) * | 2019-07-10 | 2019-09-27 | 江山市奇栖正机电科技有限公司 | A kind of the lie seat of thing to sit on of seat is lain switching mechanism |
| CN110584362A (en) * | 2019-08-29 | 2019-12-20 | 江山市奇栖正机电科技有限公司 | Sitting and lying switching frame of sitting and lying seat |
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