CN211092844U - Seat surface form change control device of seat - Google Patents

Abstract

The utility model discloses a seat surface form change control device of a chair for sitting and standing, which comprises a chute guide mechanism and a seat support part which can timely move up and down, wherein the seat support part comprises a middle seat and a side seat positioned on the left side or the right side of the middle seat, and the side seat is rotationally connected with the middle seat; the sliding groove guide mechanism comprises a guide shaft connected to the side seat and a guide support plate fixedly arranged behind the side seat, a sliding groove is longitudinally arranged on the guide support plate, 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. The side seat is controlled by the sliding groove guide mechanism, the guide shaft on the side seat is inserted into a preset sliding groove in the guide support plate, and when the middle seat moves, the side seat is turned over by the matching of the guide shaft and the sliding groove. Compared with the prior art, the structure is simpler, the operation is simpler and more convenient, and the experience of a user is better.

Description

Seat surface form change control device of seat

Technical Field

The utility model relates to the field of seating, in particular to a seat face form change control device of a chair for sitting and standing.

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.

Particularly, the left and right turning plates are automatically turned by moving the seat part up and down, so that the states of the left and right turning plates are automatically adjusted according to the height position of the cross beam, and a user can sit flat or lean against the left and right turning plates in a standing posture; the implementation is usually accomplished with a complicated linkage mechanism, which undoubtedly increases the cost and the structure is complicated.

Disclosure of Invention

The utility model overcomes exist not enough among the above-mentioned prior art, provide a seat face morphological change controlling means of chair of sitting, this controlling means makes the side seat realize synchronous transform when going up and down along with the well seat, and the side seat is along with the removal of seat support and upper and lower upset, 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 only need can realize along spout sliding fit through the guiding axle.

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

a seat surface form change control device of a chair for sitting and standing comprises a chute guide mechanism and a seat support member which can timely move up and down, wherein the seat support member comprises a middle seat and a side seat positioned on the left side or the right side of the middle seat, and the side seat is rotatably connected with the middle seat; the sliding groove guide mechanism comprises a guide shaft connected to the side seat and a guide support plate fixedly arranged behind the side seat, a sliding groove is longitudinally arranged on the guide support plate, 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.

By adopting the control device, when the flat sitting state is required to be converted into the standing state, 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 shaft moves along the track limited by the sliding groove, the relative position or distance between the guide shaft and the side seats is kept unchanged, the shape design of the sliding groove enables the side seats to turn downwards in the moving process of the guide shaft, and at the moment, the middle seat can present the posture for a user to ride and ride, namely, only the middle seat presents the posture for supporting the buttocks of the human body in the standing state; 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 chair further comprises a sliding assembly and a driving assembly, wherein the sliding assembly comprises a movable rail and a stationary rail which are in sliding fit with each other, and the stationary rail is fixedly connected with the base of the chair for sitting and standing; the driving assembly is configured to drive the movable rail to slide along the static rail, and the middle seat and the movable rail are relatively fixed; 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. 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 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 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 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.

Preferably, the guide shaft is sleeved with a roller, and the roller is in rolling fit with the sliding groove. Thus, friction can be reduced, and sliding can be smoother.

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

the seat supporting piece of the utility model has a flat sitting state and a standing state, and the state is converted by the lifting of the seat supporting piece, so that the side seat is turned over relative to the middle seat; when the two states are freely switched, the two states can be realized only by the support piece of the seat; specifically, the control is carried out through a sliding groove guide mechanism, a guide shaft on the side seat is inserted into a sliding groove preset on a guide support plate, and when the middle seat moves, the side seat is turned over through the matching of the guide shaft and the sliding groove. Compared with the prior art, the structure is simpler, the operation is simpler and more convenient, and the experience of a user is better.

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 seat surface form change control device of the utility model is a component of the chair for sitting and standing, and then the whole chair for sitting and standing is introduced in detail:

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 (13)

1. A seat face form change control device of a sitting-standing chair is characterized in that: the control device comprises a chute guide mechanism and a seat support member which can timely move up and down, wherein the seat support member comprises a middle seat and a side seat positioned on the left side or the right side of the middle seat, and the side seat is rotationally connected with the middle seat; the sliding groove guide mechanism comprises a guide shaft connected to the side seat and a guide support plate fixedly arranged behind the side seat, a sliding groove is longitudinally arranged on the guide support plate, 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.

2. The seat surface form change control device for a seat according to claim 1, 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.

3. The seat surface form change control device for a seat according to claim 1, 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.

4. The seat surface morphology control apparatus of a seat chair according to claim 2 or 3, 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.

5. The seat surface morphology control apparatus of a seat chair according to claim 2 or 3, characterized in that: the sliding chute further comprises a vertical section, and the vertical section is arranged above the inclined section.

6. The seat surface form change control device for a seat according to claim 1, wherein: the sliding assembly comprises a movable rail and a static rail which are in sliding fit with each other, wherein the static rail is fixedly connected with a base of the chair for sitting and standing; the driving assembly is configured to drive the movable rail to slide along the static rail, and the middle seat and the movable rail are relatively fixed; 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.

7. The seat surface form change control device for a seat as claimed in claim 6, wherein: the guide support plate and the static rail are integrally formed.

8. The seat surface form change control device for a seat according to 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.

9. The seat surface form change control device of a seat chair as claimed in claim 6, wherein: the driving component is any one of an air rod, a hydraulic rod or a motor.

10. The seat surface form change control device of a seat chair as claimed in claim 9, wherein: the driving assembly adopts a pneumatic rod or a hydraulic rod, one end of the driving assembly is connected with the movable rail, and the other end of the driving assembly is connected with the base or the static rail.

11. The seat surface form change control device of a seat chair as claimed in claim 9, wherein: the driving assembly adopts a motor, and the motor is a push rod motor or a linear motor.

12. The seat surface form change control device of a seat chair as claimed in claim 6, wherein: the movable rail and the static rail form an accommodating space therebetween, and the driving assembly is arranged in the accommodating space.

13. The seat surface form change control device of a seat chair as claimed in claim 1, wherein: the guide shaft is sleeved with a roller wheel, and the roller wheel is in rolling fit with the sliding groove.

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