CN211092824U

CN211092824U - Chair unit and chair

Info

Publication number: CN211092824U
Application number: CN201921709741.1U
Authority: CN
Inventors: 何基; 叶金; 蒋小兵
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2019-10-13
Filing date: 2019-10-13
Publication date: 2020-07-28
Anticipated expiration: 2029-10-13

Abstract

The utility model discloses a chair unit and a chair, which comprises a base, a slide rail component 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 plane, and the middle seat and the movable rail are relatively fixed; the side seat is hinged with the middle seat; a back support connected to the movable rail and moving up and down together with the movable rail, a link mechanism moving in response to the lifting of the middle seat, and the link mechanism acting on the side seats to turn them relative to the middle seat. The utility model provides a chair unit has flat sitting state and standing posture state: the seat changing mechanism of the utility model can be freely changed between two states, and can be realized only by sliding fit of the slide rail component; compared with the prior art, the structure is simpler, the operation is simpler and more convenient, and the experience of a user is better. The chair of the utility model has the advantages of convenient and rapid seat-stand conversion, and can be widely applied to the occasions such as offices, families, etc.

Description

Chair unit and chair

Technical Field

The utility model relates to a seating field, in particular to chair unit and chair.

Background

The seat is widely used in the study and work of modern people, and only has the function of sitting for most office chairs or study chairs; physiologically, a person standing for a long time is easy to feel tired due to heavy leg load; people who sit for a long time also feel uncomfortable or tired, and various diseases such as hypomnesis, headache and dizziness, lumbar vertebra and cervical vertebra and the like are caused because of insufficient cerebral blood supply, the weight of the whole body is pressed on the bottom end of the vertebra and the like, so that the health is not good. Sedentariness physical disadvantages have been studied and reported in many ways, where a person standing for a long time wants to sit and stand.

Among sedentary people, it seems that office white-collar workers and students who study in schools sit for the longest time, and they sit for work or study almost all the day, and are difficult to adjust their postures, and not only people are easily fatigued, but also their bodies are easily affected. The solution to this problem is preferably to allow the "sitting" and "standing" of the person to be alternated.

There is a chair with a sitting and standing function in the prior art, for example, the application number proposed by shanghai motor school in 2014, 3, 21 is as follows: "CN 201410106815.8", utility model name: the Chinese utility model patent of a chair capable of sitting and standing comprises the following use methods:

(1) when the sitting posture is adopted, the left turning plate 10 and the right turning plate 11 can be adjusted to be in a horizontal state through the first supporting rod 1201, the first sliding pin 1401, the first fastening bolt 1301, the second supporting 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 become a sitting tool, a person can sit on the sitting tool and step on the pedal 15 by leaning on the backrest 6, and the movable armrest 8 can be put down for use.

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

(3) When the single-side standing posture is adopted, one of the left turning plate 10 and the right turning plate 11 can be independently put down, and the other one 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 supporting rod 1201, the first sliding pin 1401 and the first fastening bolt 1301, or the second supporting rod 1202, the second sliding pin 1402 and the second fastening bolt 1302, so that a person can lean against one half of the backrest 6 to sit, the other half of the feet can be straightened to directly step on the ground, and the movable armrest 8 can be put down for use.

The chair realizes the conversion between the sitting and standing by the matching 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 are turned asynchronously, so the use value is not high; in addition, the left turning plate 10 and the right turning plate 11 can not move up and down along with the chair seat to generate changes, 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.

Disclosure of Invention

The utility model overcomes exist not enough among the above-mentioned prior art, provide a chair unit, the synchronous transform is realized to the both sides seat of this chair unit, and the side seat along with the removal of seat support and upper and lower upset, and the chair is whole more nimble, more pleasing to the eye, and the user can adjust according to the needs of oneself: or sitting or standing, thereby providing convenience for the alternate transformation of sitting and standing postures; more importantly, the utility model discloses between two states free switching, only need to lean on slide rail set spare sliding fit to realize.

Furthermore, the utility model discloses provide a chair simultaneously again, this chair uses with the cooperation of chair unit, has simplified the structure of the workstation of sitting, can also satisfy user's seat, the requirement of standing.

The technical scheme of the utility model is realized like this:

a chair unit comprising:

a base configured to connect to a seat support assembly;

the sliding rail assembly is vertically arranged on the base and is provided with a movable rail and a fixed rail which are mutually matched in a sliding way, wherein the fixed rail is fixedly connected with the base;

the seat supporting piece is arranged on the front side of the sliding rail component and comprises a middle seat and side seats positioned on the left side and the right side of the middle seat, the middle seat is configured to be always kept in a roughly horizontal state or form an acute angle with the horizontal plane, and the middle seat and the movable rail are relatively fixed; the side seat is hinged with the middle seat;

a back support connected with the movable rail and moving up and down along with the movable rail;

a linkage mechanism which responds to the lifting movement of the middle seat and acts on the side seats to enable the side seats to turn relative to the middle seat.

The utility model firstly provides a chair unit which has two states, namely a flat sitting state and a standing state; when the chair is in a flat sitting state, the middle seat and the two side seats are kept in a roughly horizontal state and are basically positioned on the same plane, and the side seats and the middle seat form a complete seat support part, which is used for people to sit and work or have a rest like a common chair; when the sitting posture needs to be converted from the flat sitting posture to the standing posture, the movable rail is driven by external force to move upwards, the middle seat moves upwards along with the movable rail, and the side seats are rotatably connected with the middle seat, so that the side seats are turned downwards relative to the middle seat and are in a drooping posture, and at the moment, the middle seat can be in a posture for a user to ride and ride, namely only the middle seat is in a posture for supporting the buttocks of a human body in the standing posture; the two states can be freely switched only by sliding fit of the sliding rail component; and otherwise, when the standing posture state is converted into the flat sitting state, the external force drives the movable rail to move downwards, the linkage mechanism acts on the side seats in a reverse direction again, and synchronously drives the side seats to turn upwards relative to the middle seat and finally to be positioned on the same surface with the middle seat. Furthermore, the middle seat is positioned between the two side seats, so that different shapes of the middle seat can be favorably configured, and more, the middle seat is in a slender shape favorable for riding, such as a slender trapezoid shape, a saddle shape and the like; the middle seat and the horizontal plane form an acute angle, which means that: the front end of the middle seat can be tilted to form an included angle of 5-15 degrees with the horizontal plane relative to the rear end to form a shape similar to a saddle, so that the requirement of ergonomics is met, and the realization of the form can be realized by adjusting the initial installation angle of the middle seat.

Preferably, the linkage mechanism is a sliding groove guide mechanism, which comprises a guide shaft connected to the side seat and a guide support plate fixedly arranged behind the side seat, the guide support plate is provided with a sliding groove arranged longitudinally, and the guide shaft is inserted in the sliding groove; and the guide shaft and the sliding groove are configured to move along a track defined by the sliding groove when the middle seat is lifted, so that the side seat is turned downwards or upwards. When the sitting posture needs to be converted from the flat sitting posture to the standing posture, the movable rail is driven by external force to move upwards, the middle seat moves upwards along with the movable rail, the side seats are rotationally connected with the middle seat, the guide shafts move along the tracks limited by the sliding grooves, the relative positions or the distances between the guide shafts and the side seats are kept unchanged, the side seats are turned downwards in the moving process of the guide shafts due to the shape design of the sliding grooves, and at the moment, the middle seat can present a posture for a user to ride and ride, namely, only the middle seat presents a posture for supporting the buttocks of the human body in the standing posture; the two states can be freely switched only by sliding fit of the sliding rail component; and conversely, when the standing posture state is converted into the flat sitting state, the movable rail is driven by external force to move downwards, the guide shaft moves downwards along the track limited by the sliding groove and synchronously drives the side seat to turn upwards and finally to be positioned on the same surface with the middle seat. The sliding groove guide mechanism is simple in structure, reduces cost and simplifies the mechanism.

Preferably, the device also comprises a lever arm, one end of the lever arm is fixedly connected with the side seat, the guide shaft is connected to the other end of the lever arm, and the sliding chute at least comprises an inclined section; when the guide shaft moves in the inclined section, the lever arm rotates around the circle center formed by the connection part of the lever arm and the side seat, and then the side seat is driven to deflect. Because the lever arm and the side seat are relatively fixed and form a certain included angle, when the guide shaft is guided by the inclined section of the chute, the lever arm is driven to rotate, and the side seat rotates along with the lever arm.

Preferably, the sliding chute at least comprises an inclined section, and further comprises a first connecting rod and a second connecting rod, wherein one end of the first connecting rod is hinged with the middle seat, the other end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the second connecting rod is hinged with the side seat, the first connecting rod, the second connecting rod, the side seat and the middle seat form a four-bar mechanism, and the guide shaft is arranged on any one of the first connecting rod or the second connecting rod. The four-bar linkage mechanism is formed by the first connecting bar, the second connecting bar, the side seats and the middle seat, and the middle seat is immobile, so that when the guide shaft is guided by the sliding chute, the first connecting bar and the second connecting bar are linked to drive the side seats to overturn; the four-bar mechanism enables the inclination angle of the inclined section of the sliding groove to be smaller, and the distance between the left sliding groove and the right sliding groove to be smaller, so that the whole body is more attractive, the width of the guide supporting plate can be reduced, and more space is not additionally occupied.

Preferably, the inclined section of the sliding groove extends outwards gradually from top to bottom along the width direction of the guide support plate. The arrangement of the sliding groove enables the guide shaft to be in accordance with the ascending of the middle seat and the downward overturning of the side seat when guiding; the law of descending of the middle seat and upward turning of the side seats.

Preferably, the chute further comprises a vertical section, and the vertical section is arranged above the inclined section. The vertical section guides the guide shaft, and the side seat does not turn over at the moment but continues to lift along with the middle seat so as to reach the height required by a user and adapt to people with different heights.

Preferably, the guide support plates are connected to the stationary rail, and the guide support plates are located on the left and right sides of the stationary rail. Thus, the left side and the right side can be stressed evenly.

Preferably, the guide support plate and the stationary rail are integrally formed. Thus, the processing and the arrangement are more convenient.

Preferably, the base is supported above the ground by the seat support assembly, and the height of the base from the ground is 360-550 cm. Therefore, the base has a reference height, and a user can normally sit and work in a flat sitting state.

Preferably, the base comprises a base body and a rocker rotatably connected with the base body, the stationary rail is fixedly connected to the rocker, and a return spring is arranged between the rocker and the base body. As another form, the base adopts the tilting chassis, so that the initial height of the base can be normally adjusted, and the base has a tilting function in a flat sitting state, so that the sitting is more comfortable.

Preferably, the seat support assembly comprises a lifting air rod and supporting legs, and the upper end and the lower end of the lifting air rod are respectively in inserting fit with the base and the supporting legs. The height of the base can be adjusted by controlling the lifting air rod, so that the height of the seat supporting piece in a flat sitting state is adjusted to meet the use requirements of people with different heights; furthermore, when the movable rail slides upwards, the middle seat is driven to move upwards, and if the height of the middle seat still does not meet the use requirement at the moment, the lifting air rod can be controlled in an auxiliary manner to adjust the height of the base so as to meet the requirement of supporting the height; if the base adopts a tiltable chassis, the upper end of the lifting air rod is in inserted fit with the base body.

Preferably, a safety locking control mechanism is arranged between the base and the middle seat, and the safety locking control mechanism is configured to unlock the rocker when triggered by the middle seat, and the rocker rotates relative to the seat body; when the middle seat rises and is separated from the safety locking control mechanism, the safety locking control mechanism acts on the wane to lock the wane, so that the wane and the seat body are kept relatively fixed. Therefore, when the chair is in a flat sitting state, the middle seat triggers the safety locking control mechanism all the time, so that the wane is in an unlocked state, and the chair back can freely tilt; when the chair is converted into the standing posture state, the middle seat is separated from the safety locking control mechanism, the safety locking control mechanism acts on the wane again to enable the wane to keep the locked state, and the chair back cannot lean backwards at the moment, so that the use safety is ensured.

Preferably, the safety locking control mechanism comprises a locking plate, an installation seat, a sliding pin, a torsion spring and a locking pin, wherein the locking plate is fixedly arranged on the seat body, and a locking hole matched with the locking pin is formed in the locking plate; the mounting seat is fixedly arranged on the warping plate, the sliding pin vertically penetrates through the mounting seat, and the head of the sliding pin is exposed out of the mounting seat and responds to the downward pressing of the middle seat; the center ring of torsional spring rotates with the mount pad to be connected, and the first torque arm of torsional spring is connected in the sliding pin, and the second torque arm of torsional spring is connected in the stop pin, overlaps on the sliding pin and is equipped with the spring, and the spring restriction is in the mount pad, the one end and the first torque arm butt of spring. When the rocker is in a flat sitting state, namely the head of the sliding pin is pressed by the middle seat, the sliding pin moves towards the mounting seat, the spring is compressed at the same time, the first torque arm is driven to rotate, and the second torque arm also rotates along with the first torque arm, so that the locking pin is driven to move away from the lock hole, and at the moment, the rocker is not limited any more and can rotate; when the middle seat is lifted, the sliding pin is reset under the action of the elastic force of the spring, so that the first torsion arm and the second torsion arm rotate in opposite directions, the locking pin is inserted into the lock hole, and the rocker locking is realized.

Preferably, the rocker comprises a locking pin supporting plate, the locking pin supporting plate is fixedly arranged on the rocker, and the locking pin penetrates through the locking pin supporting plate. Therefore, the locking pin can slide along the locking pin supporting plate, the axial direction of the locking pin supporting plate is accurately positioned, and the left and right deflection cannot occur.

Preferably, the bottom surface of the middle seat is connected with a pressing plate which is vertically arranged, and the lower end surface of the pressing plate is provided with a pressing part in contact fit with the head part of the sliding pin. Therefore, when the middle seat is lowered to a flat sitting state, the pressing part of the pressing plate can quickly press down the sliding pin to trigger the safety locking control mechanism.

Preferably, the back support is disposed at the front side of the slide rail assembly, and the back support and the slide rail assembly are disposed in parallel or the slide rail assembly is embedded in the back support. The sliding rail component is shielded by the back support piece, and the appearance is hardly influenced.

Preferably, the back support member is arranged at the front side of the sliding rail assembly, the back surface of the back support member is further provided with a shielding object, the shielding object and the back support member are relatively fixed, the sliding rail assembly is arranged between the shielding object and the back support member, and the shielding object completely or partially shields the sliding rail assembly. By adopting the mode, especially in a flat sitting state, the sliding rail assembly is almost completely accommodated between the shielding object and the back supporting piece, and the sliding rail assembly and the back supporting piece are integrated into a whole, so that the whole body is more attractive; and in the standing state, the movable rail, the shielding object and the back supporting piece move upwards, and the lower half part of the slide rail part can be shielded.

Preferably, the fixed connection of the stationary rail and the base is as follows: the lower end of the static rail is connected with the base through a fastener, or the lower end of the static rail is welded and fixed with the base. The static rail can be detachably connected with the base and can also be connected into a whole in a welding mode; the static rail and the base can be directly connected, and can also be fixedly connected through an intermediate piece; for example, the two static rails can be symmetrical and are respectively arranged at the left side and the right side of the base, and the lower ends of the static rails are fixedly connected with the base through the middle piece.

Preferably, the movable rail and the static rail are kept relatively fixed by a locking device, the locking device comprises a handle with a screw rod, a screw hole and a plurality of positioning holes which are longitudinally arranged, the screw hole is arranged on one of the movable rail or the static rail, the screw rod is arranged in the screw hole in a penetrating way and is in threaded connection with the screw hole, and the positioning holes are arranged on the other of the movable rail or the static rail. When the movable rail is driven by external force such as manpower to slide upwards along the static rail, the movable rail is converted into a standing state, and at the moment, if the movable rail is lifted to a height suitable for a user, the sliding rail assembly needs to be locked so as to ensure that the middle seat can play a normal supporting role; at this time, the screw rod can be inserted into the corresponding positioning hole by starting the locking device, namely rotating the handle.

Preferably, the movable rail and the static rail are kept relatively fixed by a locking device, the locking device comprises a bolt, a support lug and a plurality of positioning holes which are longitudinally arranged, the bolt is arranged on one of the movable rail or the static rail through the support lug and is arranged in a preset inserting hole in the movable rail or the static rail in a penetrating way, and the positioning holes are arranged on the other of the movable rail or the static rail. As another implementation manner, when the middle seat is raised to a height suitable for a user, the sliding rail assembly needs to be locked, so that the middle seat can play a normal supporting role; at the moment, the locking device is started, namely the bolt is stirred, so that the bolt moves along the support lug and is inserted into the corresponding positioning hole from the inserting hole, and the sliding rail assembly can be locked.

A chair comprises the chair unit and a driving assembly, wherein the driving assembly is configured to drive a movable rail to slide along a static rail.

Preferably, the driving component is any one of an air rod, a hydraulic rod or a motor.

Preferably, the driving assembly adopts an air rod or a hydraulic rod, one end of the driving assembly is connected with the back support member or the movable rail, and the other end of the driving assembly is connected with the base or the static rail.

Preferably, the driving assembly adopts a motor, and the motor is a push rod motor or a linear motor.

Preferably, an accommodating space is formed between the movable rail and the stationary rail, and the driving assembly is arranged in the accommodating space. Therefore, the driving assembly is beneficial to hiding and containing, and the external space is saved.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

first, the present invention provides a chair unit, which has two states:

(1) a flat sitting state: when the chair is in a flat sitting state, the middle seat and the two side seats are kept in a roughly horizontal state and are basically positioned on the same plane, and the side seats and the middle seat form a complete seat support part, like a common chair, so that people can sit for working or rest.

(2) Standing posture state: when the sitting posture needs to be converted from the flat sitting posture to the standing posture, the movable rail is driven by external force to move upwards, the middle seat moves upwards along with the movable rail, the side seats are rotatably connected with the middle seat, the linkage mechanism enables the side seats to turn downwards and to present a drooping posture, and at the moment, the middle seat can present a posture for a user to ride and ride, namely only the middle seat presents a posture for supporting the buttocks of a human body in the standing posture. The user can lean on the top of the chair seat in a standing state or ride on the top of the chair seat in a crossing manner; from the physiological and health aspects, the health-care tea is more consistent with the physiological health of people.

Secondly, the seat changing mechanism of the utility model can be freely changed between two states, and can be realized only by sliding fit of the slide rail component; compared with the prior art, the structure is simpler, the operation is simpler and more convenient, and the experience of a user is better.

Thirdly, the utility model provides a chair then, uses with the cooperation of above-mentioned chair unit, and is easy and simple to handle, and the conversion of sitting and standing is convenient rapid, but wide application in occasions such as office, family, meeting room.

Drawings

Fig. 1 is a schematic perspective view of a chair in a flat sitting state according to embodiment 1 of the present invention;

fig. 2 is a schematic perspective view of a chair in a flat sitting state according to embodiment 1 of the present invention;

fig. 3 is a schematic view showing a first three-dimensional structure of the chair according to embodiment 1 of the present invention when the guide shaft moves between the vertical section and the inclined section of the sliding groove;

fig. 4 is a schematic perspective view showing a first embodiment of the present invention, wherein the first embodiment is a chair having a guide shaft moving to a vertical section of a sliding groove;

FIG. 5 is a rear view of a chair according to embodiment 1 of the present invention in a flat sitting position;

fig. 6 is a rear view of the chair according to embodiment 1 of the present invention, when the guide shaft is moved between the vertical section and the inclined section of the slide groove;

fig. 7 is a rear view of the chair according to embodiment 1 of the present invention, when the guide shaft is moved to the vertical section of the slide groove;

fig. 8 is a schematic perspective view of a second embodiment of the present invention in a flat sitting position of a chair according to embodiment 1;

fig. 9 is a schematic perspective view of a second embodiment of the present invention, showing a structure of the chair when the guiding axle moves between the vertical section and the inclined section of the sliding groove in embodiment 1;

fig. 10 is a schematic perspective view of a second embodiment of the present invention, showing a structure of the chair when the guide shaft moves to the vertical section of the sliding groove in embodiment 1;

fig. 11 is a side view of a chair in a flat sitting state according to embodiment 2 of the present invention;

fig. 12 is a side view of a chair in an intermediate state when the chair is switched from a flat sitting state to a standing state according to embodiment 2 of the present invention;

fig. 13 is a side view of the chair according to embodiment 2 of the present invention, when the guide shaft is moved between the vertical section and the inclined section of the slide groove;

fig. 14 is a side view of the chair according to embodiment 2 of the present invention, when the guide shaft is moved to the vertical section of the slide groove;

fig. 15 is a first schematic perspective view of a chair in a flat sitting position according to embodiment 2 of the present invention;

fig. 16 is a schematic perspective view of the chair according to embodiment 2 of the present invention, wherein the guide shaft is moved between the vertical section and the inclined section of the sliding groove, and a side seat is hidden;

fig. 17 is a schematic top view of a chair in the form of a bicycle seat according to embodiment 1 of the present invention in a flat sitting position;

fig. 18 is a schematic top view of a saddle-shaped chair according to embodiment 1 of the present invention in a flat sitting position;

fig. 19 is a schematic top view of a chair having an elongated trapezoidal seat according to embodiment 1 of the present invention in a flat-seated state;

fig. 20 is a schematic perspective view of a second embodiment of a chair in a flat sitting position according to the present invention;

fig. 21 is a schematic perspective view of a chair in an intermediate state when the chair is switched from a flat sitting state to a standing state according to embodiment 2 of the present invention;

fig. 22 is a schematic perspective view of the chair according to embodiment 2 of the present invention, wherein the guide shaft is moved between the vertical section and the inclined section of the sliding groove;

fig. 23 is a schematic perspective view of the chair according to embodiment 2 of the present invention, when the guide shaft moves to the vertical section of the sliding groove;

fig. 24 is a schematic plan view of the slide rail assembly of the present invention in which the shelter is fully sheltered when the shelter is in the flat sitting state according to embodiment 1 of the present invention;

fig. 25 is a schematic plan view of a push rod motor according to embodiment 2 of the present invention;

fig. 26 is a schematic plan view of the movable rail and the stationary rail of the present invention in the shape of a dovetail in embodiment 1;

fig. 27 is a schematic plan view of the movable rail and the stationary rail of the present invention in the form of T in embodiment 1;

fig. 28 is a schematic plan view of the slide block and the guide rail according to embodiment 1 of the present invention;

fig. 29 is a schematic plan view of the structure in which the slide block and the guide rail are respectively disposed on the movable rail and the stationary rail in embodiment 1 of the present invention;

fig. 30 is a partial schematic perspective view of a locking device controlled by a handle according to embodiment 3 of the present invention;

fig. 31 is a first schematic plan view of a locking device using a latch control according to embodiment 4 of the present invention;

fig. 32 is a second schematic plan view of a locking device using a latch control according to embodiment 4 of the present invention;

fig. 33 is a rear view of a chair in a flat sitting state according to embodiment 2 of the present invention;

fig. 34 is a rear view of a chair in an intermediate state when the chair is switched from a flat sitting state to a standing state according to embodiment 2 of the present invention;

fig. 35 is a rear view of the chair according to embodiment 2 of the present invention, when the guide shaft is moved between the vertical section and the inclined section of the slide groove;

fig. 36 is a rear view of the chair according to embodiment 2 of the present invention, when the guide shaft is moved to the vertical section of the slide groove;

fig. 37 is an exploded perspective view of the base 5 according to embodiment 3 of the present invention;

fig. 38 is a schematic perspective view of a base 5 according to embodiment 3 of the present invention;

fig. 39 is a cross-sectional view of the rocker of the base in the locked state according to the present invention in embodiment 3;

fig. 40 is a cross-sectional view of the present invention in which the rocker of the base is in the unlocked state and the rocker is further tilted by a certain angle in embodiment 3;

fig. 41 is a cross-sectional view of the present invention in the case where the seesaw of the base is in the unlocked state and the seesaw is not yet tilted in embodiment 3;

fig. 42 is a cross-sectional view of the rocker of the base in the locked state according to the present invention in embodiment 3.

The figures are numbered: a seat support assembly 1; a lifting air rod 2; supporting legs 3; a roller 4; a base 5; a slide rail assembly 6; a movable rail 7; a slider 71; a flange 78; a stationary rail 8; a guide rail 81; a seat support 9; a side seat 10; a middle seat 11; a back support 12; a shade 13; a linkage 14; a drive assembly 15; an accommodating space 16; a piston rod head 17 of the air rod; a bottom 18 of the air rod seat; a base body 31; a rocker 32; a screw 33; a handle 34; a screw hole 35; the positioning holes 36; a spring 38; a motor 40; a sliding rail 41; a slide block 42; a motor base 43; a latch 50; a lug 51; a plug-in hole 52; a chute 60; an inclined section 601; a vertical section 602; a guide shaft 61; a guide support plate 62; a lever arm 63; the first link 64; a second link 65; a return spring 68; a lock plate 69; a mounting seat 70; a slide pin 72; a torsion spring 73; a first torsion arm 731; a second torque arm 732; a center ring 733; a locking pin 74; a locking pin support plate 75; a lock hole 76; a press plate 77; the pressing portion 78.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

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

In the description of the present invention, the term "at least one" means 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 implementation manner of the utility model is as follows:

example 1: the utility model discloses at first provide a chair unit, as shown in fig. 1-10, include:

seat support supporting component 1, seat support supporting component 1 include lift gas pole 2, the lower extreme grafting cooperation of lift gas pole 2 has supporting legs 3 that the bottom has gyro wheel 4.

The base 5 is supported above the ground through the seat support assembly 1, the base 5 is in insertion fit with the upper end of the lifting air rod 2, the height of the base 5 from the ground can be controlled through the lifting air rod 2, and the height of the base is set to be 360-550cm in the embodiment; wherein 400cm is a height suitable for most people.

The slide rail assembly 6 is vertically placed on the base 5, the slide rail assembly 6 is provided with a movable rail 7 and a static rail 8 which are in sliding fit with each other, and the static rail 8 is welded and fixed with the base 5 or is connected through a fastener.

A seat support 9 provided on the front side of the slide rail assembly 6; the seat support 9 comprises a middle seat 11 and side seats 10 positioned at the left and right sides of the middle seat, the middle seat 11 is configured to be always kept in a roughly horizontal state or form an acute angle with the horizontal plane, and the middle seat 11 is relatively fixed with the movable rail 7; the side seats 10 are hinged with the middle seat 11.

A back support 12 disposed at the front side of the slide rail assembly 6 and parallel to the slide rail assembly 6, where the slide rail assembly 6 can also be embedded into the back support 12; the back support 12 is connected with the movable rail 7 and moves up and down along with the movable rail 7; the back surface of the back support 12 is further provided with a shield 13 fixed opposite to the back support 12, the shield 13 is a cover case and is fixedly connected with the back support 12, the slide rail assembly 6 is arranged between the shield 13 and the back support 12, and the shield 13 completely or partially shields the slide rail assembly 6.

A linkage 14, wherein the linkage 14 responds to the lifting movement of the middle seat 11, and the linkage 14 acts on the side seat 10 to enable the side seat to overturn relative to the middle seat 11. Specifically, the linkage mechanism 14 is a sliding groove guide mechanism, and includes a guide shaft 61 connected to the side seat 10 and guide support plates 62 integrally formed with the stationary rail 8 and located on the left and right sides of the stationary rail 8, a sliding groove 60 longitudinally arranged is formed on the guide support plate 62, and the guide shaft 61 is inserted into the sliding groove 60; and the guide shaft 61 and the slide groove 60 are configured such that when the middle seat 11 is lifted, the guide shaft 61 moves along a trajectory defined by the slide groove 60 and turns the side seat 10 downward or upward.

The sliding chute 60 comprises an inclined section 601 and a vertical section 602 arranged above the inclined section 601, and the inclined section 601 extends outwards gradually from top to bottom along the width direction of the guide support plate 62; when the guide shaft 61 moves in the inclined section 601, the lever arm 63 rotates around the center of the circle formed by the connection between the lever arm 63 and the side seat, and the side seat 10 is driven to deflect.

As shown in fig. 26 and 27, the movable rail 7 and the stationary rail 8 may adopt any shape that can slide vertically and can be clamped laterally, wherein the section of the movable rail 7 and the stationary rail 8 in fig. 26 is dovetail-shaped, and the section of the movable rail 27 is T-shaped, so that the movable rail 7 and the stationary rail 8 are in sliding fit in the vertical direction, and are clamped in the lateral direction to prevent the movable rail 7 and the stationary rail 8 from being separated. Theoretically, the conversion of the chair unit can be controlled through the mutual sliding of the movable rail 7 and the static rail 8, but because the contact surface between the movable rail 7 and the static rail 8 is large, the sound is large in the sliding process, the smoothness degree is general, and the experience feeling of a user is not ideal.

In order to make the sliding between the two parts smoother, and reduce the noise caused by the sliding, and provide a better experience for the user, as shown in fig. 28 and 29, in this embodiment, a sliding block 71 is fixedly disposed in the moving rail 7, and a guide rail 81 is correspondingly and fixedly disposed in the stationary rail 8; the sliding block 71 and the guide rail 81 slide and are matched in a clamping manner, and the movable rail 7 and the static rail 8 are not required to be clamped, so that the movable rail 7 and the static rail 8 are both designed into a U shape, and the movable rail 7 and the static rail 8 are opposite and mutually buckled; the slide block 71 and the guide rail 81 can adopt any vertical sliding and transverse clamping shapes, in the embodiment, the section of the guide rail 81 is in a dovetail shape, the slide block 71 is also provided with a groove shape matched with the guide rail, and the movable rail 7 can slide up and down along the fixed rail 8 through the matching of the slide block 71 and the guide rail 81, so that the chair unit is changed.

Theoretically, the sliding block 71 and the guide rail 81 can be matched to complete the conversion of the chair unit, but because the contact surfaces of the sliding block 71 and the guide rail 81 with the back support 12 and the base 5 are smaller, the supporting force is insufficient, the plate-shaped shell with the flanging 78, namely the movable rail 7 and the fixed rail 8, are arranged to respectively increase the contact surfaces with the back support 12 and the base 5, and the mutual support is more stable.

The chair unit has two states, namely a flat sitting state and a standing state:

firstly, as shown in fig. 1, 2, 5 and 8, in the flat sitting state, the middle seat 11 and the two side seats 10 are kept in a substantially horizontal state, and both are located on the same plane, at this time, the side seats 10 and the middle seat 11 form a complete seat support 9, and the slide rail assembly 6 is completely covered by the shielding object 13, and the chair is like a common chair for people to sit and work or have a rest.

Secondly, as shown in fig. 3, 4, 6, 7, 9 and 10, when the conversion from the flat sitting state to the standing state is required, the external force drives the movable rail 7 to move upwards, the middle seat 11 moves upwards along with the external force, the side seats 10 are rotatably connected with the middle seat 11, the guide shaft 61 moves along the track defined by the sliding groove 60, and the relative position or distance between the guide shaft 61 and the side seats 10 is kept unchanged; since the lever arm 63 and the side seat 10 are relatively fixed and form a certain included angle therebetween, when the guide shaft 61 is guided by the inclined section 601 of the sliding slot 60, the lever arm 63 is driven to rotate, and the side seat 10 rotates accordingly, while the inclined section 601 of the sliding slot 60 is designed in a shape such that the side seat 10 is turned downward when the guide shaft 61 moves upward; at this time, the middle seat 11 can assume a posture for the user to ride on and ride, that is, only the middle seat 11 assumes a posture for supporting the buttocks of the human body in the standing posture state.

Here, the front end of the middle seat 11 can also be tilted relative to the rear end to form a shape similar to a saddle, which is suitable for the ergonomic requirement, and the realization of the shape can be realized by adjusting the initial installation angle of the middle seat 11.

As shown in fig. 3-4, 6-7, and 9-10, when the guide shaft 61 moves to the vertical section 602 of the slide groove 60, the side seat 10 is not turned over, but continues to rise with the center seat 11 to reach the height desired by the user.

On the contrary, when the standing posture state is converted into the flat sitting state, the external force drives the movable rail 7 to move downwards, the middle seat 11 moves downwards along with the movable rail, the guide shaft 61 moves downwards along the track limited by the sliding groove 60, the guide shaft 61 firstly passes through the vertical section 602 of the sliding groove 60, at the moment, the side seat 10 does not turn over but continuously descends along with the middle seat 11, and when the guide shaft 61 passes through the inclined section 601 of the sliding groove 60, the side seat 10 is synchronously driven to turn upwards and finally is positioned on the same surface with the middle seat 11.

It can be seen from the above that, the two states of the chair unit in the embodiment can be freely switched by only sliding fit of the slide rail component 6, which is convenient and rapid; and the slide rail assembly 6 is arranged behind the back support 12, so that no additional space is occupied.

In addition, the middle seat 11 in the present embodiment is located between the two side seats 10, which may facilitate the middle seat 11 to be configured with different shapes, and more particularly, to be configured with a slender shape that facilitates riding, such as a bicycle seat shape, a slender trapezoid shape, a saddle shape, etc.; as shown in fig. 17 to 19, the center seat 11 is respectively provided in a bicycle seat shape, a saddle shape, and a slender trapezoid shape.

The utility model further provides a chair, which comprises the chair unit and a driving component 15, wherein the driving component 15 has the function of driving the movable rail 7 to slide along the static rail 8; as shown in fig. 2, 3, 4, 7, 9 and 10, the driving assembly 15 in this embodiment employs a gas rod, which is commonly used and has a fast reaction speed; in the embodiment, the upper end of the air rod, namely the head 17 of the piston rod of the air rod, is hinged with the movable rail 7, and the lower end of the air rod, namely the bottom 18 of the air rod seat, is hinged with the static rail 8; of course, the way readily imaginable to the person skilled in the art is: the upper end of the air rod is hinged with the static rail 8, the lower end of the air rod is hinged with the movable rail 7, and the movable rail 7 can be lifted and descended similarly.

The air rod adopts a pull wire to control the switch to be switched on or switched off, so that the air rod is extended to be switched on or retracted; when the switch is turned on, the air rod can drive the movable rail 7 to move upwards, so that the side seat 10 and the back support 12 of the seat support 9 move upwards and are lifted along with the movable rail 7, and the middle seat 11 is in a state of supporting the buttocks of a human body; at this time, the pull wire is pulled, the air lever switch is turned off, the movable rail 7 is fixed in position, and the user can straddle or lean on the middle seat 11.

Of course, the pneumatic rod could be replaced by a hydraulic rod.

In addition, as shown in fig. 4 and 29, an accommodating space 16 is formed between the movable rail 7 and the stationary rail 8, and the driving assembly 15 is disposed in the accommodating space 16, so as to save an external space.

Example 2: as shown in fig. 11 to 16, 20 to 23, and 33 to 36, the present embodiment is different from embodiment 1 in that the lever arm 63 is not provided, but is guided by a four-bar linkage.

Specifically, the present embodiment further includes a first link 64 and a second link 65, wherein one end of the first link 64 is hinged to the middle seat 11, the other end of the first link 64 is hinged to one end of the second link 65, the other end of the second link 65 is hinged to the side seat 10, the first link 64, the second link 65, the side seat 10 and the middle seat 11 form a four-bar linkage, and the guide shaft 61 is disposed on the first link 64.

In the four-bar linkage, the middle seat 11 is stationary, and when the guide shaft 61 is guided by the sliding chute 60, the first connecting rod 64 and the second connecting rod 65 are linked to drive the side seat 10 to turn over; the inclination angle of the inclined section 601 of the sliding groove 60 can be smaller due to the arrangement of the four-bar linkage mechanism, and the distance between the left sliding groove 60 and the right sliding groove 60 is smaller, so that the whole body is more attractive, the width of the guide supporting plate 62 can be reduced, and more space is not additionally occupied.

In addition, as shown in fig. 25, the driving assembly 15 of this embodiment is different from embodiment 1 in that a motor 40 is adopted, the motor 40 is a linear motor, a sliding block 42 disposed on a sliding rail 41 of the motor 40 is connected to the movable rail 7, a motor base 43 is connected to the base 5, and the movement of the sliding block 42 is controlled by controlling the switch of the motor 40, so as to control the movable rail 7 to move up and down along the stationary rail 8.

In the embodiment, the motor 40 is adopted to control the moving rail 7 to ascend and descend, the movement is smooth and reliable, and the stop at any desired position can be conveniently controlled.

The ways readily imaginable to the person skilled in the art are: the motor 40 may also be a push rod motor.

Example 3: as shown in fig. 16 and 37-42, the difference from the

embodiments

1 and 2 is that the base 5 of the present embodiment adopts a tilting chassis, so that not only the initial height of the base 5 can be adjusted normally, but also the base has a tilting function in a flat sitting state, and the sitting is more comfortable.

Specifically, base 5 include pedestal 31 and with pedestal 31 rotate the wane 32 of being connected, quiet rail 8 fixed connection on wane 32, the upper end of lift gas pole 2 and pedestal 31 grafting cooperation, be equipped with reset spring 68 between wane 32 and the pedestal 31.

A safety locking control mechanism is arranged between the base 5 and the middle seat 11, the safety locking control mechanism comprises a locking plate 69, an installation seat 70, a sliding pin 72, a torsion spring 73 and a locking pin 74, the locking plate 69 is fixedly arranged on the seat body 31, and a locking hole 76 matched with the locking pin 74 is arranged on the locking plate 69; the mounting seat 70 is fixedly arranged on the rocker 32, the sliding pin 72 is vertically arranged on the mounting seat 70 in a penetrating way, and the head part of the sliding pin 72 is exposed out of the mounting seat 70 and responds to the pressing-down of the middle seat 11; the center ring 733 of the torsion spring 73 is rotatably connected to the mounting seat 70, the first torsion arm 731 of the torsion spring 73 is connected to the sliding pin 72, the second torsion arm 732 of the torsion spring 73 is connected to the locking pin 74, the sliding pin 72 is sleeved with the spring 38, the spring 38 is limited in the mounting seat 70, and one end of the spring 38 abuts against the first torsion arm 731.

As shown in fig. 40 and 41, when the seat is in a flat state, i.e. the middle seat 11 presses down the head of the sliding pin 72, it moves toward the mounting seat 70, compressing the spring 38 and driving the first torsion arm 731 to rotate, and the second torsion arm 732 rotates, so as to force the locking pin 74 to move away from the locking hole 76, at which time the rocker 32 is no longer restrained and can rotate; as shown in fig. 39 and 42, when the seat 11 is raised, the sliding pin 72 is reset by the elastic force of the spring 38, so that the first torsion arm 731 and the second torsion arm 732 rotate in opposite directions, and the locking pin 74 is inserted into the locking hole 76, thereby locking the rocker 32.

In order to allow the lock pin 74 to slide along the lock pin support plate 75, the axial direction thereof is accurately positioned without being deflected left and right. A locking pin support plate 75 is fixedly arranged on the rocker 32, and the locking pin 74 is arranged on the locking pin support plate 75 in a penetrating way.

In addition, as shown in fig. 15, a vertically disposed pressing plate 77 is connected to the bottom surface of the middle seat 11, and a pressing portion 78 which is in contact fit with the head of the slide pin 72 is provided on the lower end surface of the pressing plate 77. When the middle seat 11 is lowered to the flat-seated state, the pressing portion 78 of the pressing plate 77 can quickly press down the sliding pin 72, triggering the safety locking control mechanism.

Further, when the seat is in the flat sitting state, the middle seat 11 always triggers the safety locking control mechanism, so that the rocker 32 is in the unlocked state, the rocker 32 rotates relative to the seat body 31, and the chair back can freely tilt; when the chair is switched to the standing posture state, the middle seat 11 rises to separate from the safety locking control mechanism, the safety locking control mechanism acts on the wane 32 to lock the wane, so that the wane 32 and the seat body 31 are kept relatively fixed, the chair back cannot lean backwards at the moment, and the use safety is ensured.

In addition, different from the

embodiments

1 and 2, the embodiment drives the movable rail 7 to slide upwards along the fixed rail 8 manually by manpower; when the movable rail 7 slides to the standing position, if the height of the movable rail is suitable for a user, the sliding rail assembly 6 needs to be locked, so that the middle seat 11 can play a normal supporting role; the present embodiment is provided with a locking device, as shown in fig. 30, the locking device comprises a handle 34 with a screw 33, a screw hole 35 arranged on the stationary rail 8, and a plurality of positioning holes 36 longitudinally arranged on the movable rail 7, the screw 33 is arranged in the screw hole 35 and is in threaded connection with the screw.

When the movable rail 7 is driven by external force such as manpower to slide upwards along the stationary rail 8, namely, the sitting state is converted into the standing state, and when the middle seat 11 is lifted to a height suitable for a user, the handle 34 is rotated to enable the screw 33 to be inserted into the positioning hole 36 of the movable rail 7 from the screw hole 35 of the stationary rail 8, so that the movable rail 7 and the stationary rail 8 are fixed, the movable rail 7 does not slide downwards, and the middle seat 11 can play a normal supporting role.

Example 4: as shown in fig. 31 and 32, the difference from embodiment 3 is that the locking device in this embodiment includes a bolt 50, a support lug 51 disposed on the stationary rail 8, and a plurality of positioning holes 36 longitudinally disposed on the movable rail 7, and the bolt 50 is inserted into a predetermined insertion hole 52 of the stationary rail 8 through the support lug 51.

When the middle seat 11 is lifted to a height suitable for a user, the bolt 50 is pulled, so that the bolt 50 moves along the support lug 51, and penetrates through the positioning hole 36 of the movable rail 7 from the insertion hole 52 of the fixed rail 8, so that the position of the movable rail 7 is fixed, the position of the middle seat 11 is fixed, and the middle seat 11 plays a normal supporting role.

Claims

1. A chair unit characterized by comprising:

a base configured to connect to a seat support assembly;

2. The chair unit of claim 1, wherein: the linkage mechanism is a sliding groove guide mechanism and comprises a guide shaft connected to the side seat and a guide support plate fixedly arranged behind the side seat, the guide support plate is provided with a sliding groove which is longitudinally arranged, and the guide shaft is inserted in the sliding groove; and the guide shaft and the sliding groove are configured to move along a track defined by the sliding groove when the middle seat is lifted, so that the side seat is turned downwards or upwards.

3. The chair unit of claim 2, wherein: the sliding chute at least comprises an inclined section; when the guide shaft moves in the inclined section, the lever arm rotates around the circle center formed by the connection part of the lever arm and the side seat, and then the side seat is driven to deflect.

4. The chair unit of claim 2, wherein: the sliding groove at least comprises an inclined section, and further comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the middle seat, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to the side seat, the first connecting rod, the second connecting rod, the side seat and the middle seat form a four-bar mechanism, and the guide shaft is arranged on any one of the first connecting rod or the second connecting rod.

5. The chair unit according to claim 3 or 4, characterized in that: along the width direction of the guide supporting plate, the inclined section of the sliding chute extends outwards gradually from top to bottom.

6. The chair unit according to claim 3 or 4, characterized in that: the sliding chute further comprises a vertical section, and the vertical section is arranged above the inclined section.

7. The chair unit of claim 2, wherein: the guide support plate is connected to the static rail and is positioned on the left side and the right side of the static rail.

8. The chair unit of claim 7, wherein: the guide support plate and the static rail are integrally formed.

9. The chair unit of claim 1, wherein: the base is supported above the ground through the seat support assembly, and the height of the base from the ground is 360-550 cm.

10. The chair unit of claim 9, wherein: the base include the pedestal and rotate the wane of being connected with the pedestal, quiet rail fixed connection on the wane, be equipped with reset spring between wane and the pedestal.

11. The chair unit according to claim 9 or 10, characterized in that: the seat support supporting component comprises a lifting air rod and supporting legs, and the upper end and the lower end of the lifting air rod are respectively in inserting fit with the base and the supporting legs.

12. The chair unit of claim 10, wherein: a safety locking control mechanism is arranged between the base and the middle seat, and is configured to unlock the rocker when triggered by the middle seat, and the rocker rotates relative to the seat body; when the middle seat rises and is separated from the safety locking control mechanism, the safety locking control mechanism acts on the wane to lock the wane, so that the wane and the seat body are kept relatively fixed.

13. The chair unit of claim 12, wherein: the safety locking control mechanism comprises a locking plate, an installation seat, a sliding pin, a torsion spring and a locking pin, wherein the locking plate is fixedly arranged on the seat body, and a locking hole matched with the locking pin is formed in the locking plate; the mounting seat is fixedly arranged on the warping plate, the sliding pin vertically penetrates through the mounting seat, and the head of the sliding pin is exposed out of the mounting seat and responds to the downward pressing of the middle seat; the center ring of torsional spring rotates with the mount pad to be connected, and the first torque arm of torsional spring is connected in the sliding pin, and the second torque arm of torsional spring is connected in the stop pin, overlaps on the sliding pin and is equipped with the spring, and the spring restriction is in the mount pad, the one end and the first torque arm butt of spring.

14. The chair unit of claim 13, wherein: the locking pin support plate is fixedly arranged on the rocker and penetrates through the locking pin support plate.

15. The chair unit of claim 13, wherein: the bottom surface of the middle seat is connected with a pressing plate which is vertically arranged, and the lower end surface of the pressing plate is provided with a pressing part in contact fit with the head of the sliding pin.

16. The chair unit of claim 1, wherein: the fixed connection of the static rail and the base refers to that: the lower end of the static rail is connected with the base through a fastener, or the lower end of the static rail is welded and fixed with the base.

17. A chair, characterized in that: comprising a chair unit according to any one of claims 1-16 and a drive assembly configured to drive the movable rail to slide along the stationary rail.

18. A chair according to claim 17, wherein: the driving component is any one of an air rod, a hydraulic rod or a motor.

19. A chair according to claim 18, wherein: the driving assembly adopts an air rod or a hydraulic rod, one end of the driving assembly is connected with the back support piece or the movable rail, and the other end of the driving assembly is connected with the base or the static rail.

20. A chair according to claim 18, wherein: the driving assembly adopts a motor, and the motor is a push rod motor or a linear motor.

21. A chair according to claim 17, wherein: the movable rail and the static rail form an accommodating space therebetween, and the driving assembly is arranged in the accommodating space.