CN111772402B

CN111772402B - Chair for sitting and standing

Info

Publication number: CN111772402B
Application number: CN202010576526.XA
Authority: CN
Inventors: 叶金; 阮正富
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2020-03-09
Filing date: 2020-06-22
Publication date: 2024-09-27
Anticipated expiration: 2040-06-22
Also published as: CN112220261B; CN212878506U; CN112220261A; CN111772402A; WO2021179473A1; CN213820632U

Abstract

The invention discloses a sitting and standing chair, which comprises a main support body and side support bodies symmetrically arranged at the left side and the right side of the main support body, wherein the side support bodies are configured to rotate around the main support body; the side support body has an inner side portion close to the main support body and an outer side portion distant from the main support body in the width direction; the sitting standing chair has a sitting posture state and a standing posture state; in a sitting posture: the side supporting bodies are in a flat-laying posture to form a seat surface for a user to sit flat; standing posture state: the side supports rotate relative to the main support and flip up the side supports to an upright position with the outer portions of the side supports raised to accommodate a user sitting or leaning. Compared with the prior art, the sitting position and standing position switching chair is realized through the change of the tiling and upturning of the side supporting bodies, has a simple structure and is convenient to operate, and the base height is increased when the side supporting bodies upturning, so that the sitting position and the standing position switching chair is beneficial to riding or leaning of a user in a standing position state.

Description

Chair for sitting and standing

Technical Field

The invention relates to the field of seats, in particular to a sitting and standing chair.

Background

The seat is widely used in modern study and work, and has the function of sitting for most office chairs or study chairs; from a physiological aspect, a person stands for a long time and is overloaded in legs, so that the person is easy to feel tired; people who sit for a long time feel uncomfortable or tired, and various diseases such as hypomnesis, headache and dizziness, lumbar vertebra and cervical vertebra and the like are caused by insufficient cerebral blood supply, weight of the whole body pressing on the bottom end of the vertebra and the like, so that the health is not good. Sedentary adverse physical conditions have been studied and reported for a long time in which one person wishes to sit and for a long time to stand.

Among sedentary people, it seems that office white collar and students who learn in school sit for the longest time, and they sit for work or learning almost all the day over the hour, and it is difficult to adjust the posture, and not only is the person easily tired, but also the body is easily affected. The solution to this problem is preferably to allow alternating "sitting" and "standing" of the person.

The Chinese patent of CN201410106815.8 discloses a chair capable of sitting and standing, and the use method is as follows: (1) When the sitting mode is desired, the left turning plate 10 and the right turning plate 11 can be adjusted to be in a horizontal state through the first support rod 1201, the first sliding pin 1401, the first fastening bolt 1301, the second support rod 1202, the second sliding pin 1402 and the second fastening bolt 1302, so that the left turning plate 10 and the right turning plate 11 are made into a "seat", a person can sit on the seat and lean on the backrest 6 to pedal on the foot rest 15, and the movable armrest 8 can be put down for use.

(2) When the "standing posture" is desired, the left turning plate 10 and the right turning plate 11 can be vertically put down through the first support rod 1201, the first sliding pin 1401, the first fastening bolt 1301, the second support rod 1202, the second sliding pin 1402 and the second fastening bolt 1302, so that a person can lean against the backrest 6 "straddling" the cross beam 9 to be in a standing state, and the movable armrest 8 can be put down for standing and use.

(3) When the form of single-side standing is adopted, one of the left turning plate 10 and the right turning plate 11 can be independently put down, and the other is kept in a horizontal state. Specifically, the left turning plate 10 or the right turning plate 11 can be vertically put down through the first support rod 1201, the first sliding pin 1401 and the first fastening bolt 1301 or the second support rod 1202, the second sliding pin 1402 and the second fastening bolt 1302, so that a person can sit on one half of the backrest 6, the other half of the foot can straighten and directly step on the ground, and the movable armrest 8 can be put down for use.

The chair realizes conversion between sitting stations through the cooperation of the left turning plate 10, the right turning plate 11 and the cross beam 9, and the left turning plate 10 and the right turning plate 11 do not synchronously turn over, so the use value is not high; in addition, the left turning plate 10 and the right turning plate 11 can not be changed along with the up-and-down movement of the seat, so that the use experience is poor; furthermore, the left turning plate 10 and the right turning plate 11 of the chair are not easy and convenient to turn and adjust.

The Chinese patent of CN201910970699.7 discloses a chair unit and a chair, comprising a base, a sliding rail assembly with a movable rail and a static rail, wherein the static rail is fixedly connected with the base; the seat support comprises a middle seat and a side seat, the middle seat is configured to be always kept in a roughly horizontal state or form an acute angle with the horizontal state, and the middle seat is fixed relative to the movable rail; the side seat is hinged with the middle seat; the back support piece is connected with the movable rail and moves up and down along with the movable rail, responds to the linkage mechanism of the lifting movement of the middle seat, and the linkage mechanism acts on the side seat to enable the side seat to turn over relative to the middle seat; the chair unit has two states: the seat conversion mechanism can freely convert between the two states; the chair of the invention can be converted into sitting and standing postures by driving the middle seat to synchronously rise by the chair back, and the side seats on two sides can turn downwards, so that the back of the chair needs to be provided with the sliding rail to guide the chair back, and the chair back needs to be provided with the air rod to be driven, thereby integrally improving the weight of the chair and increasing the cost.

Disclosure of Invention

In order to solve the technical problems, the invention provides a sitting and standing chair, which is characterized in that side supports which are connected in a rotating way are arranged at the left side and the right side of a main support; when the side support body is in a flat-laying posture, the sitting standing chair is in a sitting posture, and the main support body and the side support body form a seat surface for a user to sit flat; the side support body rotates relative to the main support body and turns up the side support body to an upright posture, the sitting and standing chair is in a standing posture state, and the outer side part of the side support body is lifted to cater for sitting or leaning of a user.

The technical scheme of the invention is realized as follows:

A sitting and standing chair comprising:

A main support configured as a main support for a seating surface of a seating station;

The side supports are symmetrically arranged on the left side and the right side of the main support and are configured to rotate around the main support; the side support body has an inner side portion close to the main support body and an outer side portion distant from the main support body in the width direction;

The sitting standing chair has a sitting posture state and a standing posture state; in a sitting posture: the side supporting bodies are in a flat-laying posture to form a seat surface for a user to sit flat; standing posture state: the side supports rotate relative to the main support and flip up the side supports to an upright position with the outer portions of the side supports raised to accommodate a user sitting or leaning. The sitting posture and the standing posture are switched through the change of the tiling and the upturning of the side supporting bodies, the structure is simple, the operation is convenient, the basic height is increased when the side supporting bodies are upturned, and the sitting posture and the leaning of a user in the standing posture state are facilitated; the supporting leg part of the sitting and standing chair can be provided with a standardized lifting air rod mechanism, so that the sitting and standing chair can be lifted without adding extra cost.

Preferably, the outer side part of the side support body extends downwards to leave the standing position bearing part; the standing posture supporting part is in a vertical ear shape and is used for supporting sitting or leaning of a user in a standing posture state. The standing-posture supporting part in the shape of the vertical ears improves the comfort and experience of the chair in the standing posture state.

Preferably, when both the side supporting bodies are in the standing posture, the two standing posture supporting parts are close to each other and form a supporting surface in a flat state together to support the user. At this time, the user can ride on the standing position support part like riding a bicycle.

Preferably, the outer side portion of the side support extends downward and toward the inner side portion of the side support out of the standing position support, and an included angle between the standing position support and the side support is an acute angle. The standing posture bearing part improves the experience of the chair in the standing posture state, and the included angle between the standing posture bearing part and the side supporting body is small, so that the chair is more suitable for a user to lean on in the standing posture state.

Preferably, when the two side supporting bodies are in the vertical postures, the upper ends of the two side supporting bodies approach or are attached to each other, and the two standing posture supporting parts and the upper ends of the two side supporting bodies form an arch body which is beneficial for a user to ride. The user may then ride the thigh over or onto the arch.

Preferably, the side support body and the standing position supporting part are integrally formed. For example, the plastic or metal integrated molding can be adopted, the processing is convenient, and the support strength is sufficient.

Preferably, the side support body is coated with a sponge on a surface thereof, the sponge extending from an upper surface of the side support body across an outer portion thereof to a lower surface of the side support body, thereby forming a flexible supporting portion in a standing posture at an outer portion thereof. The flexible bearing part improves the comfort of the chair in sitting and standing states.

Preferably, when the two side supporting bodies are in the vertical postures, the upper ends of the two side supporting bodies approach or are attached to each other, and the two flexible bearing parts and the upper ends of the side supporting bodies jointly form a supporting body for a user to ride. At this time, when a user rides on the support body, the inner sides of thighs are contacted with the flexible bearing part, so that the comfort is better.

Preferably, the main support is in a flat state all the time in a sitting state and a standing state; in the sitting posture, the main support body and the side support bodies form a seat surface for a user to sit flat; the rotary connection positions of the side support bodies are positioned at the inner sides of the front end and the rear end of the main support body. The rotating connection positions of the two side supports and the main support are close, so that the distance between the two side supports is small after the two side supports are turned upwards, a user can ride the bicycle conveniently, and the experience is better; on the other hand, the side support bodies are narrower, but the space between the parts which are in the inner side of the rotating connection is larger, so that the height of the side support bodies after being turned up is increased, and the cost can be reduced.

Preferably, the front part or the rear part of the side support body extends out of the auxiliary support body towards the middle of the main support body, and the auxiliary support body and the side support body enclose the main support body in a sitting posture state. The auxiliary supporting body increases the depth and the supporting area of the chair in a sitting posture state, and improves the comfort level of the chair; meanwhile, the rotating connection part of the side support body and the main support body can be shielded, so that the attractiveness is improved.

Preferably, the side support body is further provided with a limiting mechanism for limiting the side support body to a flat-laid posture or an upright posture. The seat can be kept in a flat or vertical posture through the limiting mechanism, so that the stable use of the seat in a sitting posture and a standing posture is realized.

Preferably, the limiting mechanism comprises a locking piece, a limiting pulling plate and a clamping plate, wherein the locking piece is relatively fixed with the side support body, and the limiting pulling plate and the main support body can relatively slide; in a sitting posture state, the locking piece is supported by the clamping plate and is limited to rotate by the limiting pull plate, and the side supporting body is limited in a tiling posture; in the standing state, the locking piece is limited between the limiting pull plate and the clamping plate, and the side support body is limited in the standing state. The limiting mechanism enables the side supporting body to be kept stable under the flat-laying and vertical postures, so that the chair can be normally used under the sitting posture and standing posture states.

Preferably, a space is reserved between the clamping plate and the limiting pull plate; the locking piece is provided with a supporting part and a limiting part, the supporting part is abutted against the upper surface of the clamping plate in a sitting posture state, the clamping plate supports the side supporting body and limits the side supporting body to overturn downwards, one side of the limiting part is abutted against the upper surface of the limiting pull plate, and the limiting pull plate limits the side supporting body to overturn upwards; under the standing state, the supporting part rises to the upper part of the limiting part, the limiting part is positioned in the interval between the clamping plate and the limiting pull plate, and two sides of the limiting part are respectively abutted against the clamping plate and the limiting pull plate, so that the rotation of the side supporting body is limited. The matching mode of the clamping plate and the limiting pull plate and the locking piece is simple, and the cost is reduced on the premise of guaranteeing the limiting effect.

Preferably, the clamping plate protrudes forward from the front end of the main support body, and when the limiting pull plate slides to the front, the front end of the limiting pull plate protrudes from the front end of the main support body; the locking piece is rotationally connected with the front end of the main support body, and the locking piece is fixedly connected with the side support body. The part of the limiting pull plate and the clamping plate protruding out of the front end of the main support body can limit the locking piece; the locking piece rotates with the side support body synchronously, and when the locking piece is locked by the clamping plate and the limiting pulling plate, the locking of the side support body is also completed, so that the stability of the side support body in two states of sitting posture and standing posture is ensured.

Preferably, the limiting pull plate is arranged below the main support, a guide chute is formed in the limiting pull plate, a guide pin is arranged in the guide chute in a penetrating manner, and the guide pin is fixedly connected with the main support; the limiting mechanism further comprises a limiting pull plate driving mechanism, wherein the limiting pull plate driving mechanism is arranged below the main support and is configured to drive the limiting pull plate to slide along the guide chute. The limiting pull plate can slide relatively to the main support, so that the limiting pull plate can play a limiting role on the side support when the limiting pull plate slides to the front and protrudes out of the main support, and the side support can rotate when the limiting pull plate slides to the rear and does not protrude out of the main support, so that the state of sitting and standing chairs can be switched to a tiled or vertical state, and the switching control of the state of standing and sitting chairs is realized.

Preferably, the limiting pull plate driving mechanism comprises a torsion spring, the torsion spring rotates relative to the main support body, the torsion spring is provided with two torsion spring arms, one torsion spring arm is connected with the limiting pull plate, and the other torsion spring arm is pulled by a pull wire to enable the torsion spring to rotate, so that the limiting pull plate is driven to slide. The core of the limiting pull plate driving mechanism is a torsion spring, so that the cost is low; the direction of force is changed through the torsion spring, so that the operating parts in the limiting pulling plate driving mechanism can be arranged on the left side and the right side, and the limiting pulling plate driving mechanism is more convenient to operate than the operating parts arranged on the front side and the rear side.

Preferably, the device further comprises a reset spring acting on the limiting pull plate to assist the limiting pull plate to reset. The reset spring can enable the limiting pulling plate to reset automatically after one-time unlocking, and the opposite side supporting body is locked continuously.

Preferably, the limiting mechanism comprises a limiting piece and a locking assembly, wherein the limiting piece is arranged on one of the main support body or the side support body and is provided with at least two locking positions; a locking assembly mounted on the other of the main support or the side support, the locking assembly including a selectively movable locking pin; when the side support body is in a flat-laying posture or an upright posture, the lock pin is in locking fit with the corresponding locking position to limit and lock the limiting piece. In order to lock the main support body and the side support bodies to keep the sitting posture state or the standing posture state of the sitting and standing chair, the limiting piece and the locking component are matched to realize limiting locking, the locking pin is matched with the corresponding locking position to complete limiting locking, the structure and the operation are simple, and the sitting and standing posture state can be conveniently switched by a user.

Preferably, the limiting piece is a disc-shaped body, the locking position is a locking groove or a locking hole formed in the limiting piece, and the locking pin moves along the depth direction of the seat. The limiting piece of the disc-shaped body cannot be clamped when rotating along with the side supporting body, so that the smooth rotation of the side supporting body is ensured; the lock pin moves along the depth direction of the seat, when the lock pin is inserted into the locking groove or the locking hole, the limit piece can be locked to rotate, and when the lock pin exits from the locking groove or the locking hole, the limit piece and the side support body cannot be prevented from rotating.

Preferably, the disk-shaped body is arranged against the direction of movement of the locking pin. The disc is arranged such that a plurality of locking grooves or holes are provided in the disc to engage the locking pin.

Preferably, the front part or the rear part of the side support body extends out of the auxiliary support body towards the middle of the main support body, and when the side support bodies are tiled on the left side and the right side of the main support body, the auxiliary support body and the side support bodies surround the main support body; the auxiliary support is configured to mount a locking assembly or a stop. The locking assembly or the limiting piece is arranged below the auxiliary supporting body, so that the two side supporting bodies are close to the rotating point of the main supporting body, on one hand, after the two side supporting bodies are turned upwards, the distance between the two side supporting bodies is small, a user can ride the bicycle conveniently, and the experience is better; on the other hand, the side support bodies are narrower, but the space between the parts which are in the rotation connection and the inner side is larger, so that the height of the side support bodies after being turned up is increased, and the cost can be reduced; and the locking or limiting piece arranged below the auxiliary supporting body does not appear abrupt.

Preferably, the limiting piece is fixedly connected with the side supporting body, and rotates along with the side supporting body; the locking assembly is mounted on the main support. Compared with the locking assembly which follows the rotation of the side support body, the locking assembly has too many accompanying parts, the following of the side support body is inconvenient to rotate, the limiting piece rotates more conveniently along with the side support body, and the locking assembly is simpler in production and assembly.

Preferably, the limiting piece is rotatably connected with the main support through a rotating shaft so as to realize overturning of the side support.

Preferably, the locking component comprises a mounting seat and a poking piece, wherein the mounting seat is arranged on the main support body or the side support body, and the locking pin is arranged on the mounting seat in a penetrating way; the plectrum rotates with the mount pad to be connected, and the one end and the lockpin of plectrum are connected, and the other end is connected with control assembly, and control assembly control plectrum rotates for the mount pad, and the plectrum drives the lockpin and removes simultaneously. The control assembly is used for controlling the shifting piece to rotate, and the shifting piece is used for driving the lock pins to move, so that a plurality of lock pins lock or unlock the corresponding limiting disc simultaneously.

Preferably, the lock pin in front of the shifting piece is radially and inwards cut into a ring groove, an elastic card is arranged on the ring groove, and the shifting piece pushes the elastic card so as to push the lock pin to move. The elastic card not only realizes that the poking piece drives the lock pin to rotate, but also realizes the limit of the lock pin in the mounting seat.

Preferably, a return spring is arranged in front of the elastic card, and the return spring abuts against the mounting seat and acts on the elastic card. The return spring acts on the elastic card to enable the lock pin to withdraw from the locking groove or the locking hole.

Preferably, the elastic clamping piece is an annular body with an opening on the circumference, the annular body is provided with two elastic clamping arms which are symmetrically arranged, and the elastic clamping arms are clamped into the annular groove of the lock pin and integrally protrude out of the outer circumferential surface of the lock pin. When the elastic card is clamped into the annular groove and pushed by the poking piece, the elastic card can drive the lock pin to move through the annular groove.

Preferably, a linkage mechanism is provided between the side supports such that when one side support rotates, the other side support rotates in synchronism. The synchronous overturning of the side supporting bodies at the two sides of the seat is realized when the sitting state and the standing state are switched, and the operation of a user is simplified; the number of the locking mechanisms can be reduced due to the arrangement of the linkage mechanism, so that spare and accessory parts of the seat are reduced, the cost is reduced, the assembly time is saved, and the production benefit is improved.

Preferably, the linkage mechanism may be a gear transmission mechanism. The gear transmission structure has low cost, simple assembly, improved production and assembly efficiency, and can more easily realize the required functions.

Preferably, the main support may be disposed below the side support, and the inner side portions of the side supports disposed in bilateral symmetry are parallel. By the arrangement, the seat surface of the sitting station chair only has the side supporting bodies, and the fixed main supporting bodies among the side supporting bodies are eliminated, so that the seat is more integrated.

Preferably, the main support body is a supporting seat which is hollow, the middle part of the supporting seat is sunk, the front end and the rear end of the supporting seat are upturned, and the side support body is rotationally connected with the front end and the rear end of the supporting seat.

Preferably, a supporting seat is arranged below the main supporting body, the supporting seat is configured to be connected with a seat supporting assembly, the middle part of the supporting seat is sunken, the front end and the rear end of the supporting seat are upturned, the main supporting body is supported by the front end and the rear end of the supporting seat, and the side supporting body is rotatably connected with the main supporting body or the supporting seat.

The design starting point, the idea and the beneficial effects of the invention adopting the technical scheme are as follows:

The invention provides a sitting and standing chair, which is compared with the prior art:

1. Starting from the realization effect and the comfortableness of the sitting posture state and the standing posture state conversion, the key point of realizing the sitting posture and standing posture conversion is to increase the sitting height, and the realization effect and the use comfortableness of the sitting posture and standing posture conversion are regulated, so that the sitting posture and the standing posture are balanced; in the prior art, the technology of realizing sitting and standing posture conversion by using only the lifting air bar generally requires the use of an air bar with a longer stroke, and even a chair back, such as some bar chairs, cannot be equipped; or other technologies for making structural innovation are provided, the seat in the standing state can only lean, the sitting function is lost, the effect of realizing sitting-standing posture conversion is poor, and the comfort is also greatly reduced.

The invention uses the mode that the side supporting body which is taken as the seat surface is turned upwards and locked into the vertical posture, so that the basic sitting height in the standing posture state is improved, and the basic sitting height is the sitting height which can be achieved by the seat through the mechanical mechanism, thus being applicable to partial crowds; the sitting height is adjusted again by utilizing the lifting air rod of the seat, so that the requirements of people with different heights on the sitting height are met, the achievement effect of sitting and standing posture conversion is high, the sitting height suitable for users with different heights is achieved by adjusting the lifting air rod, and the comfort is improved; meanwhile, the sitting standing chair is provided with the chair back, and when the sitting posture is converted into the standing posture state, the chair back is kept motionless, and the upper half part of the chair back can still support the waist and the back of a user, so that the comfort is improved, and the use safety in the standing posture state is ensured.

After the two side supporting bodies are turned upwards, the outer side parts are close to form an abrupt ridge-shaped body, standing posture supporting parts or coated sponges extend out of the outer side parts of the side supporting bodies in consideration of use comfort, and the standing posture supporting parts or coated sponges can be shaped through different sponges to meet the ergonomics of sitting in a standing posture state; the standing posture supporting part similar to a bicycle saddle can enable a user to ride on the bicycle saddle in a standing posture, and compared with a mountain-shaped body, the standing posture supporting part has a supporting plane with much smaller pressing feeling on the user, so that the comfort is improved; when the included angle between the standing position bearing part and the side supporting body is smaller, a user can sit on the chair or lean on the chair from any one of the left side and the right side.

2. From the operational difficulty of sitting and standing posture conversion, the sitting and standing posture conversion can be completed by simply turning the side support body upwards and selectively adjusting the lifting air rod without removing parts and installing the parts after adjusting the height.

3. From the cost, the sitting height is increased after the side supporting body is turned upwards, and only one lifting air rod is needed to be equipped to better adapt to the height requirement of a user; the lifting air rod does not need to be specially made, a plurality of lifting air rods or other lifting devices are not needed, the standard air rods used for common seats can meet the requirements, the material cost is reduced, the weight is reduced, and the transportation cost is reduced; in addition, compared with a common seat, the sitting standing chair can be further provided with a limiting mechanism for improving the use convenience and safety, and particularly the side supporting body in the standing state can be locked.

4. According to the invention, different limiting mechanisms are not required to be arranged for the standing posture state and the sitting posture state, and the locking in the standing posture state and the sitting posture state can be completed only by the same limiting mechanism, so that the structure is simple and ingenious, the mechanism is simplified, and the cost is saved.

5. The main support can be arranged below the side support from the structure of the seat, and the main support is in a hollow shape, so that the seat is simple and smooth in design; the side supporting bodies are symmetrically arranged left and right, a linear slit is formed between the side supporting bodies and the side supporting bodies, an outer cover can be arranged outside the side supporting bodies to cover the slit, and the appearance of the seat part is not different from that of a common seat in a sitting posture state; the side supporting body is turned to the vertical posture, so that the sitting and standing chair can be switched to the standing posture state for a user to sit or lean on; the sitting and standing chair is simple in structure, simple in appearance and attractive in appearance.

Drawings

Fig. 1is a schematic perspective view showing the conversion between sitting and standing states in embodiment 1 of the present invention;

Fig. 2 is a schematic perspective view of the main support body and the side support body in a sitting posture according to embodiment 1 of the present invention;

Fig. 3 is a schematic perspective view of a limiting pull plate and a clamping plate limiting a locking piece in a sitting posture state in embodiment 1;

FIG. 4 is a schematic perspective view showing the rotary connection of the rear end of the main support with the side support in example 1;

Fig. 5 is a schematic view showing a three-dimensional structure of the main support body and the side support body in cooperation in the standing posture state in embodiment 1 of the present invention;

fig. 6 is a schematic perspective view of a limiting pull plate and a clamping plate limiting a locking piece in a standing state in embodiment 1;

FIG. 7 is a top view of the sitting station chair of example 1 in a sitting position;

FIG. 8 is an enlarged view of a portion A of FIG. 3;

Fig. 9 is a partial enlarged view of the portion B in fig. 6;

FIG. 10 is a schematic view showing a three-dimensional structure of the main support and the side supports in a sitting posture according to the embodiment 2;

fig. 11 is a schematic view showing a three-dimensional structure of the main support body and the side support body in cooperation in the standing posture state in embodiment 2;

fig. 12 is a schematic view showing a second perspective structure of the main support body and the side support body in the standing posture state in embodiment 2;

FIG. 13 is a schematic view showing a second perspective structure of the main support and the side support in a sitting posture according to the present invention in example 2;

fig. 14 is a schematic perspective view of a limiting mechanism in embodiment 1 of the present invention;

fig. 15 is a schematic perspective view of a sitting station chair in a sitting posture in embodiment 3 of the present invention;

FIG. 16 is a top view of the sitting station chair of example 3 in a sitting position;

FIG. 17 is a front view of the sitting station chair of example 3 in a sitting position;

Fig. 18 is a schematic view showing a three-dimensional structure of a sitting and standing chair in a standing posture state in embodiment 3 of the present invention;

Fig. 19 is a sectional view in the direction C of fig. 18;

fig. 20 is a schematic perspective view showing the conversion between sitting and standing posture in embodiment 3 of the present invention;

FIG. 21 is a schematic perspective view showing the cooperation of the stopper and the locking assembly in the sitting posture state in embodiment 4 of the present invention;

fig. 22 is a schematic perspective view showing the cooperation of the stopper and the locking assembly in the standing posture state in embodiment 4 of the present invention;

FIG. 23 is a rear view of the main and side supports and locking pins in combination with the spacing disc in the seated position of example 4 of the present invention;

FIG. 24 is a front view of the main and side supports and locking pins in combination with the spacing disc in the seated position of example 4 of the present invention;

FIG. 25 is a rear view showing the main and side supports and the locking pin engaged with the stopper plate in the standing posture in example 4 of the present invention;

FIG. 26 is a front view showing the main and side supports and the locking pin engaged with the stopper plate in the standing position of example 4 of the present invention;

FIG. 27 is a bottom view of the locking assembly of example 4 of the present invention;

FIG. 28 is a side view of the locking assembly of the present invention in example 4;

FIG. 29 is a schematic perspective view of an elastic card in example 4 according to the present invention;

FIG. 30 is a schematic perspective view of a dial in embodiment 4 according to the present invention;

FIG. 31 is a schematic view of the sitting and standing posture switching in embodiment 4 of the present invention;

fig. 32 is a schematic perspective view of the main and side supports in a sitting posture in example 4 of the present invention;

fig. 33 is a schematic perspective view of the main and side supports in the standing posture state in embodiment 4 of the present invention;

fig. 34 is a partial enlarged view of the portion D in fig. 21;

fig. 35 is a partial enlarged view of the portion E in fig. 28;

FIG. 36 is a rear view of the main and side supports and gear sets of the present invention in a seated position in example 5;

FIG. 37 is a schematic perspective view showing the engagement of the transmission member with the lock pin in embodiment 5 of the present invention;

FIG. 38 is a rear view of the invention in which the transmission member engages the locking pin in embodiment 5;

FIG. 39 is a rear view of the transmission assembly of example 5 of the present invention;

FIG. 40 is a schematic perspective view of the primary gear and the transmission member of the present invention in the embodiment 5;

FIG. 41 is a front view showing the transition between the sitting posture and the standing posture in embodiment 6 of the present invention;

FIG. 42 is a schematic perspective view of a seat in a flat-laid posture according to the embodiment 6 of the present invention;

Fig. 43 is a schematic perspective view of the seat in the upright posture in embodiment 6 of the present invention.

The reference numerals are as follows: a main support 1; a side support body 2; an inner portion 3; an outer portion 4; a rotating shaft seat 5; a locking piece 6; a rotating shaft 7; a mounting plate 8; an auxiliary support 9; a standing posture support part 10; a limit mechanism 11; a limit pull plate 12; a positioning plate 13; a base 14; a return spring 15; a wire pulling assembly 16; a torsion spring 17; a support portion 18; a limit part 19; a stay wire fixing seat 20; a board seat 21; a spring seat 22; a guide chute 23; a thin rod 24; a tailstock 25; a guide pin 26; a pull wire 27; a return mechanism 28; a limit ball 29; a limit seat 30; a connection base 31; a return spring 32; a lifting gas lever 33; five-star feet 34; a seat chassis 35; a link 36; an outer contour line 37; a space 38; a pull wire sleeve 39; an arch 40; a sponge extension 41; a main support sponge 42; a side supporter sponge 43; a stopper 53; a locking assembly 54; a stopper plate 57; a lock pin 58; a sitting posture locking groove 59; a standing position locking groove 510; a block 511; a base 512; a rotation shaft seat plate 513; a base plate 514; a link plate 515; a mounting base 517; a paddle 518; a connection portion 519; a vertical part 520; a guide hole 521; a control wire assembly 522; u-shaped slot 523; ring groove 524; an elastic card 525; a spacer 526; a lock pin return spring 527; a resilient clip arm 528; a gear set 74; mounting a sheet plate 75; a primary gear 76; a driven gear 77; a rotation shaft hole 78; a rotation shaft 79; a long axis 710; a transmission member 711; a fixing portion 712; a limiting tip 713; a locking pin 714; a drive lug 715; a slit 81.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" refers to one or more, unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific embodiments of the present invention are as follows:

example 1:

As shown in fig. 1, the present invention provides a sitting station chair comprising: the main support body 1 and the side support bodies 2 symmetrically arranged on two sides of the main support body 1 can generate relative rotation between the side support bodies 2 and the main support body 1.

As shown in fig. 1 and 2, the main support body 1 is a seat plate, a seat support assembly is arranged below the main support body 1, in this embodiment, the seat support assembly includes a lifting air rod 33, five-star feet 34 and a seat chassis 35, the lifting air rod 33 is connected between the five-star feet 34 and the seat chassis 35, the main support body 1 is connected to the upper end of the seat chassis 35, and the main support body 1 can be lifted by the lifting air rod 33; of course, the seat support assembly may alternatively not include a seat pan.

The side support body 2 is a plate-shaped body, and the side support body 2 has an inner portion 3 close to the main support body 1 and an outer portion 4 far from the main support body 1 along the width direction, wherein the outer portion 4 is an outer edge of the side support body 2, and broadly refers to an outer edge region of the side support body 2, and generally refers to a portion capable of supporting a human body to sit in a standing posture state.

The sitting standing chair has a sitting posture state and a standing posture state; in a sitting posture: the main support body 1 and the side support bodies 2 are in a flat-laying posture to form a seat surface for a user to sit flat, and the seat surface can be a plane or a curved surface conforming to ergonomics; when the sitting posture is converted into the standing posture, the side supporting bodies 2 on two sides are respectively turned upwards to an upright posture, the upright posture does not necessarily limit the side supporting bodies 2 to be strictly vertical to the horizontal plane, more means that the outer side parts 4 of the side supporting bodies 2 can be at a higher height after the side supporting bodies 2 are turned upwards, the main supporting bodies 1 can be kept fixed in the upward turning process, and at the moment, the height using requirements of most people in the standing posture can be met under the upright posture by the side supporting bodies 2; when the side support body 2 is in the standing posture and cannot meet the sitting requirement of the human body in the standing posture, for example, the user is too tall or short, the height of the main support body 1 can be controlled by the lifting air rod 33, so that the requirement of the user can be met.

The inner parts 3 of the side supports 2 can be connected to the left and right sides of the main support 1 through hinges in a rotating manner, but in order to meet the requirement that the side supports 2 have a reasonable height after being turned upwards, and the two side supports 2 can be closed so that a user can ride, the width of the main support 1 is generally reduced, and thus the contact surface between the main support 1 and the seat chassis 35 is possibly reduced, and the configuration becomes difficult; in order to solve the problem, the rotation connection part of the main support body 1 and the side support body 2 is arranged at the position of the front end and the rear end of the main support body 1, which are respectively close to the inner sides, so that the seat chassis 35 below the main support body 1 and the main support body 1 can keep enough contact area, the side support body 2 has reasonable height after being overturned upwards, and simultaneously, the two side support bodies 2 can be close to each other as much as possible, thereby facilitating the riding and sitting of a user.

The rotational connection is realized in such a way that: the front and rear sides of the side support body 2 are respectively welded with a connecting rod 36, and the connecting rods 36 are extended to the inner side positions of the front and rear ends of the main support body 1 along the width direction of the sitting and standing chair and are rotatably connected with the positions through a rotating shaft 7.

The above paragraphs describe the core idea of the present invention, achieving the purpose of sit-stand transfer by the upward overturning of the side support body 2; in order to improve the comfort of use and the consideration of sitting posture of a human body in a standing posture state during actual use, the side support body 2 is optimally designed, specifically, as shown in fig. 2 and 5, the outer side part 4 extends downwards to leave the standing posture supporting part 10, the standing posture supporting part 10 is a bent plate in a vertical ear shape and provided with a curved surface, and the side support body 2 and the standing posture supporting part 10 are integrally formed; when the side support body 2 is turned up and fixed, the two standing posture supporting parts 10 are close together, and meanwhile, the standing posture supporting parts 10 are converted from a sagging state into a substantially horizontal state which is favorable for supporting a human body, and at the moment, the two standing posture supporting parts 10 form a saddle with a narrower width compared with a seat surface in a sitting posture state for a user to sit.

The above paragraphs illustrate the design key point of the present invention, and in practical use, the side support body 2 needs to be limited in sitting and standing states, and this limiting manner can be various, and the following examples are:

As shown in fig. 2-7, the front and rear ends of the main support body 1 are provided with a rotating shaft seat 5, the side support body 2 is connected with the rotating shaft seat 5 through a connecting rod 36, the rotating shaft seat 5 and the connecting rod 36 are provided with the same rotating shaft 7 in a penetrating way, one end of the connecting rod 36 is provided with a mounting plate 8, and the mounting plate 8 is fixedly connected to the lower surface of the side support body 2 close to the inner side part 3; the side support body 2 drives the mounting plate 8 to synchronously rotate, so that the connecting rod 36 rotates around the rotating shaft 7.

The front part of the side support body 2 extends towards the middle of the main support body 1 to form an auxiliary support body 9, the auxiliary support body 9 is used for increasing the seat depth, the side support body 2 and the auxiliary support body 9 form an L-shaped plate together when being seen from top to bottom in a sitting posture, and the outer contour line 37 of the bending part of the formed L-shaped plate is arc-shaped, so that a person can ride on the side support body 2 in an upright posture more easily; it is of course also possible to choose to extend the auxiliary support 9 only from the rear of the side support 2.

Alternatively, the auxiliary supporting body 9 may extend from the front and rear parts of the side supporting body 2 together, so that the side supporting body 2 and the auxiliary supporting body 9 together form a U-shaped plate; whether it constitutes a U-shaped plate or an L-shaped plate, depending on the overall arrangement of the seat.

As shown in fig. 3, 6 and 14, the rotation of the side support body 2 is controlled by a limiting mechanism 11, the limiting mechanism 11 comprises a locking piece 6, a limiting pull plate 12, a clamping plate 13, a base 14 and a limiting pull plate driving mechanism, the base 14 is a plate-shaped body, the base 14 is fixedly connected to the lower surface of the main support body 1 through bolts, the left side and the right side of the base 14 extend forwards to form the clamping plate 13, the front end of the clamping plate 13 protrudes out of the front end of the main support body 1, a limiting pull plate 12 is arranged between the two clamping plates 13, a space 38 is reserved between the limiting pull plate 12 and the clamping plate 13 in the width direction of the seat, and the front end of the limiting pull plate 12 protrudes out of the front end of the main support body 1 and returns to the rear of the front end of the main support body 1 according to limiting requirements.

Meanwhile, in order to simplify the mechanism, the locking piece 6 and the connecting rod 36 at the front end of the main support body 1 are the same part, the locking piece 6 is provided with a support part 18 and a limit part 19, and the limit pull plate 12 and the clamping plate 13 limit the locking piece 6 together so as to lock the side support body 2 in a flat-laid posture or an upright posture; specifically, as shown in fig. 3, 6, 8, and 9, in the sitting posture, the supporting portion 18 is abutted against the upper surface of the positioning plate 13, the positioning plate 13 supports the side supporting body 2 and limits the side supporting body 2 to turn down, one side of the limiting portion 19 is abutted against the upper surface of the limiting pull plate 12, the limiting pull plate 12 limits the side supporting body 2 to turn up, and the side supporting body 2 is locked in the flat-laid posture; when the sitting posture is converted into the standing posture, the limiting pull plate 12 moves backwards, and leaves the limiting part 19 at the moment, so that the limiting part 19 is not blocked any more, and the side support body 2 can be turned upwards; in the standing state, the supporting part 18 rises above the limiting part 19, the limiting part 19 is positioned in the interval 38 between the clamping plate 13 and the limiting pull plate 12, and two sides of the limiting part 19 are respectively abutted against the clamping plate 13 and the limiting pull plate 12, so that the rotation of the side supporting body 2 is limited, and the side supporting body 2 is locked in the standing state.

As shown in fig. 14, the limiting pull plate 12 is driven by a limiting pull plate driving mechanism including a return spring 15, a pull wire assembly 16 and a torsion spring 17; cutting on the base 14 and bending downwards to form a stay wire fixing seat 20 and a plate seat 21, wherein the stay wire assembly 16 is connected to the stay wire fixing seat 20; the lower surface of the base 14 is provided with a spring seat 22, the spring seat 22 is a bolt fixed on the base 14, the torsion spring 17 is sleeved on the spring seat 22, the torsion spring 17 can rotate around the spring seat 22, one end of the torsion spring 17 is connected with the limiting pull plate 12, and the other end is connected with the pull wire assembly 16; the limiting pull plate 12 is provided with a section of guide chute 23, the tail part of the limiting pull plate extends out of a thin rod 24, and the reset spring 15 is sleeved on the thin rod 24; the lower surface of the base 14 is also provided with a tail seat 25, the tail part of the limiting pull plate is in penetrating fit with the plate seat 21, the rear end of the thin rod 24 is inserted into the tail seat 25, the return spring 15 is positioned between the plate seat 21 and the tail seat 25, and the limiting pull plate 12 is in sliding connection with the base 14 through a guide pin 26 penetrating through the guide chute 23.

The stay wire assembly 16 comprises a stay wire 27, a stay wire sleeve 39 and a control switch (not shown), wherein the stay wire 27 pulls the torsion spring 17 to enable the torsion spring 17 to rotate around the center of the torsion spring 17; the stay wire 27 is provided with a return mechanism 28, the return mechanism 28 comprises a limit ball 29 arranged at the tail end of the stay wire 27, a limit seat 30 and a connecting seat 31 sleeved on the stay wire 27 and a return spring 32 arranged between the limit seat 30 and the connecting seat 31, the limit ball 29 is arranged in the limit seat 30 at the same time, the limit ball 29 cannot penetrate through the limit seat 30, and the connecting seat 31 is used for connecting the return spring 32 and the torsion spring 17.

The control switch controls the pull wire 27 to act, the pull wire assembly 16 is pulled, the limiting ball 29 at the tail end of the pull wire 27 pushes the limiting seat 30 to compress the return spring 32, the elastic force generated by compression deformation of the return spring 32 drives the torsion spring 17 to rotate, namely the torsion spring 17 is driven to rotate through the connecting seat 31, the torsion spring 17 pulls the limiting pull plate 12 to slide backwards along the guide chute 23, and the return spring 15 is compressed; when the stay wire assembly 16 is loosened, the return spring 15 stretches and recovers, the limiting stay plate 12 slides forwards to drive the torsion spring 17 to rotate to the initial position in the opposite direction, and the stay wire assembly 16 returns.

As shown in fig. 3, 6, 8, 9, in the sitting posture: the main support body 1 and the side support body 2 are in a flat-laying posture to form a seat surface for a user to sit flat, the standing posture supporting part 10 is hung on the left side and the right side of the seat surface, at the moment, the supporting part 18 is abutted against the upper surface of the clamping plate 13, the clamping plate 13 supports the side support body 2 and limits the side support body 2 to overturn downwards, one side of the limiting part 19 is abutted against the upper surface of the limiting pull plate 12, the limiting pull plate 12 limits the side support body 2 to overturn upwards, and the side support body 2 is locked in the flat-laying posture; standing posture state: the side support body 2 rotates relative to the main support body 1 and enables the side support body 2 to turn upwards to an upright posture, meanwhile, the outer side part 4 of the side support body 2 is lifted, the two standing posture bearing parts 10 are close to each other and form a saddle with the auxiliary support body 9 so as to cater for sitting or leaning of a user, at the moment, the support parts 18 are lifted to the upper parts of the limiting parts 19, the limiting parts 19 are positioned in the intervals 38 between the clamping plates 13 and the limiting pull plates 12, two sides of the limiting parts 19 are respectively abutted against the clamping plates 13 and the limiting pull plates 12, rotation of the side support body 2 is limited, the side support body 2 is locked in the upright posture, and when the height of the side support body 2 still cannot meet the height requirement of the user, the lifting air bars 33 are controlled to lift or lower the side support body 2 in the upright posture so as to achieve a proper standing posture sitting height.

Example 2: the present embodiment is different from embodiment 1 in that in the standing posture state, the standing posture support portion 10 is newly designed in consideration of the sitting posture of the user and satisfying the riding requirement of the user.

As shown in fig. 10-13, the outer portion 4 of the side support 2 extends downward and toward the inner portion 3 of the side support 2 to form a standing posture support portion 10, and the included angle between the standing posture support portion 10 and the side support 2 is 10 ° -30 °, so that the standing posture support portion 10 does not feel a strong downward abrupt sense in a sitting posture, and when the two side supports 2 are in an upright posture and approach each other, the upper ends of the two side supports 2 approach or are attached to each other, the two standing posture support portions 10 and the upper ends of the two side supports 2 together form an arch 40 which is beneficial for a user to ride, and the arch 40 is in a saddle shape for the user to conveniently ride on, and simultaneously has an ergonomic effect.

Example 3: the present embodiment is different from embodiments 1 and 2 in that in the standing posture state, the standing posture support portion 10 is newly designed in consideration of the sitting posture of the user and satisfying the riding requirement of the user.

15-20, The standing support 10 and the side support 2 are made of a material with strong plasticity, wherein plasticity refers to the ability of the material to be bent and maintain the deformation, such as but not limited to plastic; when the side support body 2 is made of a material with poor plasticity, such as a wood board, in order to ensure the comfort of use in a sitting posture state, the main support body sponge 42 is laid on the upper surface of the main support body, the side support body sponge 43 is laid on the upper surface of the side support body 2, and simultaneously the sponge spans the outer side part 4 of the side support body 2 and extends towards the inner side part 3 of the side support body 2 to form a sponge extension body 41, and the width of the sponge extension body 41 can be determined according to the actual situation, so that the inner side of thighs is contacted with the sponge extension body 41 after a user rides in the standing posture state, thereby improving the comfort of sitting; when the two side supports 2 are in the upright posture, the upper ends of the two side supports 2 approach or are attached to each other, and the two sponge extensions 41 and the upper ends of the side supports 2 together form a flexible support for a user to ride.

Example 4: this embodiment differs from embodiments 1,2,3 in that a new stop mechanism is introduced.

As shown in fig. 21 and 22, the present invention provides a locking mechanism of a sitting and standing chair, which comprises a main support body 1, a side support body 2, a limiting piece 53 and a locking assembly 54.

The sitting and standing chair realizes the sitting and standing posture conversion in the following way: the main support body 1 is configured as a main body support of a seat surface of a sitting station, the side support bodies 2 are symmetrically arranged at the left side and the right side of the main support body 1, and the side support bodies 2 are rotationally connected with the main support body 1; in the width direction, the side support body 2 has an inner side portion 3 close to the main support body 1 and an outer side portion 4 distant from the main support body 1.

As shown in fig. 21, 22 and 31-33, the sitting and standing chairs have a sitting position and a standing position; in a sitting posture: the main support body 1 and the side support bodies 2 are in a flat-laying posture, namely the side support bodies 2 are flat-laid on two sides of the main support body 1 to form a seat surface for a user to sit flat; standing posture state: the side supports 2 are rotated relative to the main support 1 and the side supports 2 are turned up to an upright posture, while the outer portions of the two side supports 2 are raised and brought close to a set distance to cater for sitting or leaning of the user.

In order to enable the sitting and standing chair to be used in a sitting and standing state, a locking mechanism is required to lock the sitting and standing state, and the sitting and standing state can be unlocked when the sitting and standing state is required to be converted; the locking mechanism of the standing chair is specifically described as follows:

The limiting member 53 as shown in fig. 21-26 is a disc-shaped body, which is called a limiting plate 57, two locking grooves are formed on the limiting plate 57, and the limiting plate 57 is arranged on the side supporting body 2; the locking assembly 54 is mounted on the main support body 1, and the locking assembly 54 comprises a locking pin 58 which can be selectively moved; when the side support body 2 is turned to a preset position relative to the main support body 1, the lock pins 58 are in locking fit with the corresponding locking grooves, and limit and lock the limit disc 57.

The front part or the rear part of the side support body 2 extends out of the auxiliary support body 9 towards the middle of the main support body 1, and when the side support body 2 is tiled on the left side and the right side of the main support body 1, the auxiliary support body 9 and the side support body 2 surround the main support body 1; the auxiliary supporting body 9 is a part of the side supporting body 2, and the limiting plate 57 is arranged on the side supporting body 2; the lock pin 58 moves in the seat depth direction, and the stopper 57 is disposed against the movement direction of the lock pin 58.

The four limit plates 57 are all provided, and the limit plates 57 are respectively connected and fixed on the auxiliary supporting bodies 9 extending from the two side supporting bodies 2 and are rotatably connected with the main supporting body 1 through rotating shafts; each limiting disc 57 is correspondingly provided with a lock pin 58, and the lock pins 58 can be inserted into or withdrawn from the locking grooves so as to lock or unlock the limiting discs 57; the two locking grooves are a sitting posture locking groove 59 and a standing posture locking groove 510 respectively, in a sitting posture state, the side support bodies 2 are flatly paved on two sides of the main support body 1, the sitting posture locking groove 59 on the limiting disc 57 is aligned with the locking pin 58, and at the moment, the locking pin 58 moves along the depth direction of the seat and is inserted into the sitting posture locking groove 59, so that the sitting posture and standing chair can be locked in the sitting posture state; in the standing posture state, the side support body 2 is turned upwards to be in an upright posture, a standing posture locking groove 510 on the limiting disc 57 is aligned with the locking pin 58, and at the moment, the locking pin 58 moves along the depth direction of the seat and is inserted into the standing posture locking groove 510, so that the sitting and standing chair can be locked in the standing posture state; when the sitting and standing chair needs to be converted into the sitting and standing chair, the lock pin 58 moves along the depth direction of the seat and withdraws from the locking groove, so that the side support body 2 can rotate relative to the main support body 1 to switch the desired sitting and standing chair state.

The front end and the rear end of the main support body 1 extend downwards to form a seat block 511, a base 512 is arranged on the seat block 511, and the base 512 comprises a rotating shaft seat plate 513 attached to the front end surface or the rear end surface of the seat block 511 and a bottom plate seat 514 attached to the bottom surface of the seat block 511; the limiting plate 57 is rotatably connected with the rotating shaft seat plate 513 through a rotating shaft; the limiting plate 57 is a semicircular disc, a connecting plate 515 with a threaded hole is formed in the extending mode of the limiting plate 57 in the direction away from the circular arc, the connecting plate 515 and the limiting plate 57 are bent, the limiting plate 57 and the connecting plate 515 are integrally formed, and the limiting plate 57 is fixedly connected to the bottom face of the auxiliary supporting body 9 through the connecting plate 515.

The limiting plate 57 is disposed on the bottom surface of the auxiliary support 9, and the rotation point of the limiting plate 57 and the main support 1 is located below the main support 1, i.e. on the rotating shaft seat plate 513 of the seat block 511, so that the limiting plate 57 is hidden below the seat surface, so that the side support 2 and the main support 1 can be kept on the same horizontal plane in a sitting posture state, and the limiting plate 57 is not abrupt.

The lock pin 58 performs the lock-up lock of the lock-up plate 57, which requires the lock pin 58 to move in the seat depth direction, specifically:

As shown in fig. 27-30 and 14 and 15, the locking assembly 54 includes a mounting base 517 and a pulling piece 518, the mounting base 517 is disposed on the base plate 514, the mounting base 517 includes a connecting portion 519 connected with the base plate 514 and two vertical portions 520 disposed parallel to the limiting plate 57, the vertical portions 520 and the connecting portion 519 are integrally formed, the vertical portions 520 are provided with guide holes 521, and the locking pins 58 are disposed in the guide holes 521; the poking piece 518 is vertically arranged and rotationally connected to the connecting part 519, one end of the poking piece 518 is connected with the lock pin 58, the other end of the poking piece 518 is connected with the control component, the control component controls the poking piece 518 to rotate relative to the mounting seat 517, and meanwhile, the poking piece 518 drives the lock pin 58 to move; the control assembly is a control wire assembly 522.

The pulling piece 518 is connected to the lock pins 58 between the vertical parts 520, one end of the pulling piece 518 connected with the lock pins 58 is provided with a U-shaped groove 523, when the pulling piece 518 is connected with the lock pins 58, the U-shaped groove 523 semi-surrounds the lock pins 58, the lock pins 58 in front of the U-shaped groove 523 are radially inwards cut into a ring groove 524, and the ring groove 524 is provided with an elastic card 525; the poking piece 518 drives the lock pin 58 to move by pushing the elastic card 525, a gasket 526 is arranged between the elastic card 525 and the poking piece 518, and the gasket 526 is sleeved on the lock pin 58; a latch return spring 527 is also sleeved on the latch 58 in front of the resilient card 525, the latch return spring 527 abutting against the upright portion 520 of the mount 517 and acting on the resilient card 525.

The elastic clamping piece 525 is a ring body with an opening on the circumference, the ring body is provided with two elastic clamping arms 528 which are symmetrically arranged, and the elastic clamping arms 528 are clamped into the annular groove 524 of the lock pin 58 and integrally protrude out of the outer circumferential surface of the lock pin 58.

When the control wire assembly 522 controls the rotation of the pulling sheet 518 relative to the mounting base 517, the pulling sheet 518 pushes the elastic card 525 to move the lock pin 58 along the direction of the guide hole 521, that is, along the depth direction, and the lock pin 58 is inserted into the locking groove, and the elastic card 525 compresses the lock pin return spring 527; the control cord assembly 522 is released and the latch return spring 527 resiliently urges the resilient card 525 such that the latch 58 is withdrawn from the locking slot and returned to the original position, while the paddle 518 is also rotated back to the original position.

Example 5:

In order to make the sitting and standing chair more convenient and faster when switching sitting and standing states, and simultaneously reduce the number of limit mechanisms 11 on the sitting and standing chair, thereby reducing the production cost and saving the assembly practice, a linkage mechanism is required to be arranged, and comprises a transmission component; when the sitting standing chair is switched between a sitting posture state and a standing posture state, the transmission component acts on the side supporting bodies 2 and enables the two side supporting bodies 2 to synchronously rotate; as shown in fig. 36-40, the linkage mechanism for the standing chair is described as follows:

The side support body 2 is integrally C-shaped and surrounds the main support body 1; the transmission component is arranged between the two side supporting bodies 2 and is positioned at the rear part of the main supporting body 1, and the transmission component is configured to transmit the torque of the rotation of one side supporting body 2 to the other side supporting body 2 and synchronously rotate the two side supporting bodies 2 when the one side supporting body 2 rotates; the transmission assembly can be realized in various modes, and the embodiment specifically describes a transmission assembly with a gear transmission structure.

Specifically, the transmission assembly adopts a gear transmission structure, namely the transmission assembly comprises a gear set 74, the gear set 74 is arranged on the main support body 1 through a mounting sheet 75, and the gear set 74 comprises a primary gear 76 which rotates synchronously with the side support body 2 and a driven gear 77 which is meshed and arranged between the two primary gears 76; the driven gears 77 are two in number and meshed with each other; the mounting plate 75 is fixedly connected with the main support body 1, a rotating shaft hole 78 is formed in the mounting plate 75, and the primary gear 76 and the driven gear 77 are arranged on the mounting plate 75 through a rotating shaft 79 and are in rotating connection with the main support body 1; and the mounting plate 75 separates the gear from the main support 1.

The side support 2 is rotatably connected with the main support 1 through a long shaft 710, the long shaft 710 penetrates the main support 1 back and forth and is inserted into the side support 2, and the primary gear 76 and the side support 2 are jointly penetrated on the long shaft 710.

The transmission assembly also comprises a transmission piece 711, and the transmission piece 711 is fixedly connected with the primary gear 76 and the side support body 2 respectively; specifically:

The transmission member 711 is a substantially plate-shaped body, and the transmission member 711 is disposed on the long shaft 710 in a penetrating manner; the transmission member 711 includes a fixing portion 712 fixedly connected to the side supporting body 2 and a limiting tip 713; in the width direction of the seat, the fixing portion 712 is located at the outer side of the long shaft 710, the fixing portion 712 is a rectangular plate-shaped body, and the lower end portion of the fixing portion 712 is bent to form an L-shaped plate-shaped body, and the fixing portion 712 at this time plays a role of connecting and bearing the side support body 2; in the width direction of the seat, the limiting tip 713 is positioned on the inner side of the long shaft 710, the limiting tip 713 is a hook-shaped plate body, and the tip of the limiting tip 713 faces the inner side of the long shaft 710; the linkage mechanism also comprises a locking pin 714 which is relatively fixed with the main support body 1 and is matched with the limiting tip 713, and the locking pin 714 is arranged above the limiting tip 713; the locking pin 714 is configured to lock the lock tip 713 when it is rotated to a preset position; that is, when the side supporting body 2 is in the flat-laid posture, the limiting tip 713 abuts against the locking pin 714 above it, thereby serving to prevent the side supporting body 2 from continuing to turn down.

The primary gear 76 is outwardly extended with a driving lug 715 in a radial direction, the driving lug 715 is located between the mounting plate 75 and the fixing portion 712, and the driving member 711 is connected to the driving lug 715 through a pin.

When the side support body 2 on one side rotates around the long shaft 710, the transmission part 711 fixedly connected with the side support body 2 is driven to rotate in the same direction, meanwhile, the fixing part drives the primary gear 76 to rotate in the same direction, and because the two driven gears 77 are meshed with each other and are meshed with the primary gears 76 on two sides, and because the rotation directions of every two meshed gears are different, after the two driven gears 77 are transmitted, the primary gears 76 on the other side drive the side support body 2 on the side to rotate in the opposite direction, so that synchronous upturning or downturning of the side support bodies 2 on two sides is realized.

Still further, as shown in fig. 37, the main support 1 is always in a flat-laid posture, a supporting seat 90 is provided under the main support 1, the supporting seat 90 is configured to be connected with a seat supporting assembly, a middle portion of the supporting seat 90 is sunk, front and rear ends of the supporting seat 90 are tilted up, the main support 1 is supported by the front and rear ends of the supporting seat 90, and the side support 1 is rotatably connected with the main support 1. Of course, the side support 1 may alternatively be rotatably connected to the support base 90.

Example 6:

As shown in fig. 41-43, the main support 1 is a base, that is, a support seat, the main support 1 may be disposed below the side support 2, and the main support 1 is in a hollow shape, the middle portion of the main support 1 is sunk, the front and rear ends of the main support 1 are tilted, and the side support 2 is rotatably connected with the front and rear ends of the main support 1, so that the simple and smooth design of the seat is facilitated; the side supporting bodies 2 are symmetrically arranged left and right, a linear slit 81 is formed between the side supporting bodies and the side supporting bodies, an outer cover can be arranged outside the side supporting bodies to cover the slit 81, and the appearance of the seat part is not different from that of a common seat in a sitting posture state; the outer cover is uncovered and the side supporting body 2 is turned over to an upright posture, so that the sitting and standing chair can be switched to a standing posture state for a user to ride or lean on; the sitting and standing chair is simple in structure, simple in appearance and attractive in appearance.

Claims

1. A sitting and standing chair, comprising:

The sitting standing chair has a sitting posture state and a standing posture state; in a sitting posture: the side supporting bodies are in a flat-laying posture to form a seat surface for a user to sit flat; standing posture state: the side support body rotates relative to the main support body and turns up to an upright posture, and at the same time, the outer side part of the side support body is lifted to cater for sitting or leaning of a user;

The device also comprises a limiting mechanism for limiting the side supporting body to a tiling posture or an upright posture; the limiting mechanism comprises a locking piece, a limiting pull plate and a clamping plate, wherein the locking piece is relatively fixed with the side support body, and the limiting pull plate and the main support body can relatively slide; in a sitting posture state, the locking piece is supported by the clamping plate and is limited to rotate by the limiting pull plate, and the side supporting body is limited in a tiling posture; in the standing state, the locking piece is limited between the limiting pull plate and the clamping plate, and the side support body is limited in the vertical state;

A space is reserved between the clamping plate and the limiting pull plate; the locking piece is provided with a supporting part and a limiting part, the supporting part is abutted against the upper surface of the clamping plate in a sitting posture state, the clamping plate supports the side supporting body and limits the side supporting body to overturn downwards, one side of the limiting part is abutted against the upper surface of the limiting pull plate, and the limiting pull plate limits the side supporting body to overturn upwards; under the standing state, the supporting part rises to the upper part of the limiting part, the limiting part is positioned in the interval between the clamping plate and the limiting pull plate, and two sides of the limiting part are respectively abutted against the clamping plate and the limiting pull plate, so that the rotation of the side supporting body is limited.

2. The seat as claimed in claim 1, wherein: the clamping plate protrudes forwards from the front end of the main support body, and when the limiting pull plate slides forwards, the front end of the limiting pull plate protrudes from the front end of the main support body; the locking piece is rotationally connected with the front end of the main support body, and the locking piece is fixedly connected with the side support body.

3. The seat as claimed in claim 1, wherein: the limiting pull plate is arranged below the main support body, a guide chute is formed in the limiting pull plate, a guide pin is arranged in the guide chute in a penetrating manner, and the guide pin is fixedly connected with the main support body; the limiting mechanism further comprises a limiting pull plate driving mechanism, wherein the limiting pull plate driving mechanism is arranged below the main support and is configured to drive the limiting pull plate to slide along the guide chute.

4. A seat as claimed in claim 3, wherein: the limiting pulling plate driving mechanism comprises a torsion spring which rotates relative to the main support body, the torsion spring is provided with two torsion spring arms, one torsion spring arm is connected with the limiting pulling plate, and the other torsion spring arm is pulled by a pull wire to enable the torsion spring to rotate, so that the limiting pulling plate is driven to slide.

5. A seat as claimed in claim 3, wherein: the device also comprises a reset spring acting on the limiting pull plate to assist the limiting pull plate to reset.

6. The seat as claimed in claim 1, wherein: the outer side part of the side support body extends downwards to leave the standing position bearing part; the standing posture supporting part is in a vertical ear shape and is used for supporting sitting or leaning of a user in a standing posture state.

7. The seat as claimed in claim 6, wherein: when the two side supporting bodies are in the standing posture, the two standing posture supporting parts are close to each other and form a supporting surface in a tiling state together to support a user.

8. The seat as claimed in claim 1, wherein: the outer side part of the side support body extends downwards and extends out of the standing posture supporting part towards the inner side part of the side support body, and an included angle between the standing posture supporting part and the side support body is an acute angle.

9. The seat as claimed in claim 8, wherein: when the two side supporting bodies are in the vertical postures, the upper ends of the two side supporting bodies approach or are attached to each other, and the two standing posture supporting parts and the upper ends of the two side supporting bodies form an arch body which is beneficial for a user to ride.

10. The seat as claimed in claim 6 or 8, wherein: the side support body and the standing position bearing part are integrally formed.

11. The seat as claimed in claim 1, wherein: the surface of the side support body is coated with a sponge, and the sponge spans the outer side part from the upper surface of the side support body and extends to the lower surface of the side support body, so that a flexible bearing part in a standing state is formed at the outer side part of the side support body.

12. The seat as claimed in claim 11, wherein: when the two side supporting bodies are in the vertical postures, the upper ends of the two side supporting bodies approach or are attached to each other, and the two flexible bearing parts and the upper ends of the side supporting bodies jointly form a supporting body for a user to ride.

13. The seat as claimed in claim 1, wherein: in the sitting posture state and the standing posture state, the main support is always in a flat state; in the sitting posture, the main support body and the side support bodies form a seat surface for a user to sit flat; the rotary connection positions of the side support bodies are positioned at the inner sides of the front end and the rear end of the main support body.

14. The seat as claimed in claim 13, wherein: the front part or the rear part of the side support body extends out of the auxiliary support body towards the middle of the main support body, and the auxiliary support body and the side support body enclose the main support body in the sitting posture state.

15. The seat as claimed in claim 13, wherein: the support seat is arranged below the main support body, the support seat is configured to be connected with a seat support assembly, the middle part of the support seat is sunken, the front end and the rear end of the support seat are upturned, the main support body is supported by the front end and the rear end of the support seat, and the side support body is rotationally connected with the main support body or the support seat.

16. The seat as claimed in claim 1, wherein: the main support body can be arranged below the side support body, and the inner side parts of the side support bodies which are arranged in bilateral symmetry are parallel.

17. The seat as claimed in claim 16, wherein: the main support body is a supporting seat which is hollow, the middle part of the supporting seat is sunk, the front end and the rear end of the supporting seat are upturned, and the side support body is rotationally connected with the front end and the rear end of the supporting seat.

18. A sitting and standing chair, comprising:

The device also comprises a limiting mechanism for limiting the side supporting body to a tiling posture or an upright posture; the limiting mechanism comprises a limiting piece and a locking assembly, the limiting piece is fixedly connected with the side supporting body and rotates along with the side supporting body, and the limiting piece is provided with at least two locking positions; the limiting piece is rotationally connected with the main support through a rotating shaft so as to realize the overturning of the side support; a locking assembly mounted on the main support, the locking assembly including a selectively movable locking pin; when the side support body is in a flat-laying posture or an upright posture, the lock pin is in locking fit with the corresponding locking position to limit and lock the limiting piece;

The front part or the rear part of the side support body extends out of the auxiliary support body towards the middle of the main support body, and when the side support bodies are tiled on the left side and the right side of the main support body, the auxiliary support body and the side support bodies surround the main support body; the auxiliary support body is configured to mount a locking assembly or a limiting member;

And a linkage mechanism is arranged between the side supporting bodies, so that when one side supporting body rotates, the other side supporting body synchronously rotates.

19. The seat as claimed in claim 18, wherein: the limiting piece is a disc-shaped body, the locking position is a locking groove or a locking hole formed in the limiting piece, and the locking pin moves along the depth direction of the seat.

20. The seat as claimed in claim 19, wherein: the disk-shaped body is arranged against the movement direction of the lock pin.

21. The seat as claimed in claim 18, wherein: the locking component comprises a mounting seat and a poking piece, wherein the mounting seat is arranged on the main support body or the side support body, and the locking pin is arranged on the mounting seat in a penetrating manner; the plectrum rotates with the mount pad to be connected, and the one end and the lockpin of plectrum are connected, and the other end is connected with control assembly, and control assembly control plectrum rotates for the mount pad, and the plectrum drives the lockpin and removes simultaneously.

22. The seat as claimed in claim 21, wherein: the lock pin in front of the pulling sheet is radially and inwards cut into a ring groove, an elastic card is arranged on the ring groove, and the pulling sheet pushes the elastic card so as to push the lock pin to move.

23. The seat as claimed in claim 22, wherein: and a lock pin reset spring is arranged in front of the elastic card, and the lock pin reset spring is propped against the mounting seat and acts on the elastic card.

24. The seat as claimed in claim 22, wherein: the elastic clamping piece is an annular body with an opening on the circumference, the annular body is provided with two elastic clamping arms which are symmetrically arranged, and the elastic clamping arms are clamped into the annular groove of the lock pin and integrally protrude out of the outer circumferential surface of the lock pin.

25. The seat as claimed in claim 18, wherein: the linkage mechanism is a gear transmission mechanism.

26. The seat as claimed in claim 18, wherein: the outer side part of the side support body extends downwards to leave the standing position bearing part; the standing posture supporting part is in a vertical ear shape and is used for supporting sitting or leaning of a user in a standing posture state.

27. The seat as claimed in claim 26, wherein: when the two side supporting bodies are in the standing posture, the two standing posture supporting parts are close to each other and form a supporting surface in a tiling state together to support a user.

28. The seat as claimed in claim 18, wherein: the outer side part of the side support body extends downwards and extends out of the standing posture supporting part towards the inner side part of the side support body, and an included angle between the standing posture supporting part and the side support body is an acute angle.

29. The seat as claimed in claim 28, wherein: when the two side supporting bodies are in the vertical postures, the upper ends of the two side supporting bodies approach or are attached to each other, and the two standing posture supporting parts and the upper ends of the two side supporting bodies form an arch body which is beneficial for a user to ride.

30. The seat as claimed in claim 26 or 28, wherein: the side support body and the standing position bearing part are integrally formed.

31. The seat as claimed in claim 18, wherein: the surface of the side support body is coated with a sponge, and the sponge spans the outer side part from the upper surface of the side support body and extends to the lower surface of the side support body, so that a flexible bearing part in a standing state is formed at the outer side part of the side support body.

32. The seat as claimed in claim 31, wherein: when the two side supporting bodies are in the vertical postures, the upper ends of the two side supporting bodies approach or are attached to each other, and the two flexible bearing parts and the upper ends of the side supporting bodies jointly form a supporting body for a user to ride.

33. The seat as claimed in claim 18, wherein: in the sitting posture state and the standing posture state, the main support is always in a flat state; in the sitting posture, the main support body and the side support bodies form a seat surface for a user to sit flat; the rotary connection positions of the side support bodies are positioned at the inner sides of the front end and the rear end of the main support body.

34. The seat as claimed in claim 33, wherein: the front part or the rear part of the side support body extends out of the auxiliary support body towards the middle of the main support body, and the auxiliary support body and the side support body enclose the main support body in the sitting posture state.

35. The seat as claimed in claim 33, wherein: the support seat is arranged below the main support body, the support seat is configured to be connected with a seat support assembly, the middle part of the support seat is sunken, the front end and the rear end of the support seat are upturned, the main support body is supported by the front end and the rear end of the support seat, and the side support body is rotationally connected with the main support body or the support seat.

36. The seat as claimed in claim 18, wherein: the main support body can be arranged below the side support body, and the inner side parts of the side support bodies which are arranged in bilateral symmetry are parallel.

37. The seat as claimed in claim 36, wherein: the main support body is a supporting seat which is hollow, the middle part of the supporting seat is sunk, the front end and the rear end of the supporting seat are upturned, and the side support body is rotationally connected with the front end and the rear end of the supporting seat.