CN211092825U - Safety locking control mechanism of chair for sitting and standing - Google Patents

Abstract

The utility model discloses a safety locking control mechanism of chair of sitting, include: the base comprises a base body and a wane which is rotationally connected with the base body; the seat supporting piece is arranged above the base and has a flat sitting state and a standing state, and the seat supporting piece descends or ascends when being switched between the flat sitting state and the standing state; the sliding pin is connected with the seat body in a sliding manner, is vertically arranged, is pressed by the seat supporting piece to trigger sliding when the seat supporting piece is in a flat sitting state, and resets when the seat supporting piece rises and leaves the sliding pin; and the locking pin is linked with the sliding pin, when the seat supporting piece is in a flat sitting state, the sliding pin slides to enable the locking pin to lock the rocker, and when the seat supporting piece is converted from the flat sitting state to the standing state, the sliding pin slides in the reverse direction and drives the locking pin to unlock the rocker. The utility model discloses an use, guaranteed the safety in utilization, and according to the automatic unblock of seat support piece's state and locking, need not user's intervention.

Description

Safety locking control mechanism of chair for sitting and standing

Technical Field

The utility model relates to a seating furniture field, in particular to safety locking control mechanism of chair of 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 sitting and standing through the matching of the left turning plate 10, the right turning plate 11 and the cross beam 9, in addition, the left turning plate 10 and the right turning plate 11 can not change along with the up-and-down movement of the chair seat, and the use experience is poor; furthermore, the backrest of the chair can not be tilted backwards, so that the chair is straight and supported, and the back of a user is uncomfortable after the user sits for a long time.

CN203914098U discloses a chair combining sitting and standing, which comprises a seat 30 and a supporting portion 20 for supporting the seat 30, wherein the supporting portion 20 has a supporting rod 23, the supporting rod 23 is movably connected with the seat 30, the chair further comprises a swinging member 40 and a telescopic mechanism connected with the supporting portion 20, the telescopic mechanism is telescopic along the direction perpendicular to the seat 30, one end of the swinging member 40 is movably connected with the seat 30, and the other end of the swinging member 40 is connected with the telescopic mechanism.

The chair combining sitting and standing is characterized in that the chair surface 30 is controlled to incline or restore to the horizontal state through adjusting the telescopic mechanism, so that the conversion of sitting and standing is realized, but the chair back cannot be installed, so that the back of a user cannot lean against the chair, certain limitation is realized, and the requirement of office standing and working is difficult to meet in practical application.

Particularly, the development of a working chair for a sitting station is envisaged, and the backrest of the chair can still lean forward and backward in a flat sitting state, so that the use comfort is ensured; when the chair seat is lifted to be converted into a standing state, the backrest of the chair can not be leaned backwards so as to ensure the use safety.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the defects in the prior art, and provides a safety locking control mechanism of a chair for sitting and standing, wherein in a flat sitting state, a wane can rotate, and a chair back is connected on the wane, so that the chair can lean forward and backward, and the use comfort is ensured; when the chair is converted into the standing state, the wane is locked and cannot rotate, namely, the chair back cannot lean backwards, so that the use safety is ensured.

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

a safety locking control mechanism for a chair for sitting and standing comprising:

a base configured to connect to a seat support assembly; the base comprises a base body and a wane rotatably connected with the base body, and a return spring for returning the wane in a rotating manner is arranged between the wane and the base body;

the seat supporting piece is configured to support the hip and the leg of a human body, is arranged above the base and has a flat sitting state and a standing state, and descends or ascends when the seat supporting piece is switched between the flat sitting state and the standing state;

the sliding pin is connected with the seat body in a sliding manner, is vertically arranged, is pressed by the seat supporting piece to trigger sliding when the seat supporting piece is in a flat sitting state, and resets when the seat supporting piece rises and leaves the sliding pin;

and the locking pin is linked with the sliding pin, when the seat supporting piece is in a flat sitting state, the sliding pin slides to enable the locking pin to lock the rocker, and when the seat supporting piece is converted from the flat sitting state to the standing state, the sliding pin slides in the reverse direction and drives the locking pin to unlock the rocker.

Preferably, the safety locking control mechanism further comprises a locking plate, an installation seat and a torsion spring, 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 seat supporting piece; 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 seat support is in a flat sitting state, namely the head part of the sliding pin is pressed down by the seat support, the seat support 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 locking hole, and at the moment, the wane is not limited any more and can rotate; when the seat supporting piece leaves the locking pin, 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 locking hole, and the wane 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 seat support comprises a first seat and a second seat, the first seat and the second seat support the hip and the leg of the human body together in a flat sitting state, and the sliding pin is pressed down by the first seat; in the standing posture state, only the first seat presents the posture of supporting the hip and the leg of the human body; when the sitting posture is converted into the standing posture, the first seat and the second seat move relatively.

Preferably, the bottom surface of the first seat is connected with a pressing plate, the pressing plate 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. Therefore, when the first seat is lowered to the flat seat state, the pressing part of the pressing plate can quickly press down the sliding pin to trigger the safety locking control mechanism.

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

the safety locking control mechanism of the utility model is applied to a sitting-standing chair, and the base of the sitting-standing chair adopts an inclining chassis, and the seat supporting piece has two states, namely a flat sitting state and a standing state; when sitting flat, the seat support has the function of inclining, so that the sitting is more comfortable. Thus, when the chair is in a flat sitting state, the seat supporting piece always presses the sliding pin, so that the wane is in an unlocking state, and the chair back can freely tilt; when the chair is converted into the standing posture state, the seat supporting piece is separated from the sliding pin, the locking pin acts on the wane to keep the wane in a locking state, and the chair back cannot lean backwards at the moment, so that the use safety is ensured.

Drawings

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

fig. 2 is a schematic perspective view of a working 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 working chair of the present invention when the guide shaft moves between the vertical section and the inclined section of the chute in embodiment 1;

fig. 4 is a schematic perspective view showing a first embodiment of the present invention when the guide shaft of the working chair moves to the vertical section of the sliding groove in embodiment 1;

fig. 5 is a rear view of the working chair in the flat sitting state according to embodiment 1 of the present invention;

fig. 6 is a rear view of the working 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 working 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, showing a working chair in a flat sitting position according to embodiment 1;

fig. 9 is a schematic perspective view of the second embodiment of the present invention, showing the three-dimensional structure of the working chair when the guide shaft moves between the vertical section and the inclined section of the sliding chute in embodiment 1;

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

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

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

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

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

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

fig. 17 is a schematic top view of a working chair of embodiment 1, in which a first seat is in the shape of a bicycle seat, in a flat sitting position;

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

fig. 19 is a schematic top view of a working chair of embodiment 1, in which a first seat is an elongated trapezoid, in a flat-seated state;

fig. 20 is a schematic perspective view of a second embodiment of the present invention, showing a working chair in a flat sitting position according to embodiment 2;

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

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

fig. 23 is a schematic perspective view of the working 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 the working chair in the flat sitting position according to embodiment 2 of the present invention;

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

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

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 second seat 10; a first 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 a safe locking control mechanism is the component part of the work chair of sitting station, and the work chair is whole to be introduced in detail next:

the working chair of the utility model, as shown in figures 1-10, comprises:

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 first seat 11 and a second seat 10 positioned at the left and right sides of the first seat, the first seat 11 is configured to be always kept in a roughly horizontal state or form an acute angle with the horizontal plane, and the first seat 11 is relatively fixed with the movable rail 7; the second seat 10 is hinged to the first 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, said linkage 14 being responsive to the lifting movement of the first seat 11, and the linkage 14 acting on the second seat 10 to invert it relative to the first seat 11. Specifically, the linkage mechanism 14 is a sliding groove guide mechanism, and includes a guide shaft 61 connected to the second 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 first block 11 is lifted, the guide shaft 61 moves along a trajectory defined by the slide groove 60 and causes the second block 10 to be flipped 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 gradually extends outwards from top to bottom along the width direction of the guide supporting 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 second seat, and the second 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 working chair unit can be controlled through the mutual sliding of the movable rail 7 and the static rail 8, but the contact surface between the movable rail 7 and the static rail 8 is large, so that 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 conversion of the working chair unit is completed.

Theoretically, the working chair unit can be changed by matching the sliding block 71 with the guide rail 81, 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 contact surfaces of the plate-shaped shell with the flanging 78, namely the movable rail 7 and the fixed rail 8, with the back support 12 and the base 5 are increased, and the mutual support is more stable.

The working 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 first seat 11 and the two second seats 10 are kept in a substantially horizontal state, and both are located on the same plane, at this time, the second seat 10 and the first seat 11 form a complete seat support 9, the slide rail assembly 6 is completely shielded by the shielding object 13, and the working chair is like a common chair, so that people can sit for office work or rest.

Secondly, as shown in fig. 3, 4, 6, 7, 9 and 10, when the sitting state needs to be converted into the standing state, the movable rail 7 is driven by external force to move upwards, the first seat 11 moves upwards along with the movable rail, the second seat 10 is rotatably connected with the first 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 second seat 10 is kept unchanged; since the lever arm 63 and the second 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 chute 60, the lever arm 63 is driven to rotate, and the second seat 10 rotates accordingly, while the shape of the inclined section 601 of the sliding chute 60 in this embodiment is designed such that the second seat 10 is turned downward when the guide shaft 61 moves upward; at this time, the first seat 11 can assume a posture for the user to ride on and ride, that is, only the first seat 11 assumes a posture for supporting the buttocks of the human body in the standing posture.

Here, the front end of the first 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 this form can be realized by adjusting the initial installation angle of the first seat 11.

As shown in fig. 3-4, 6-7, 9-10, when the guide shaft 61 moves to the vertical section 602 of the chute 60, the second seat 10 is no longer turned, but continues to rise with the first seat 11 to reach the height desired by the user.

On the contrary, when the standing posture state is converted to the sitting posture state, the external force drives the movable rail 7 to move downwards, the first seat 11 moves downwards along with the movable rail, the guide shaft 61 moves downwards along the track defined 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 second seat 10 does not turn over but continuously descends along with the first seat 11, and when the guide shaft 61 passes through the inclined section 601 of the sliding groove 60, the second seat 10 is synchronously driven to turn upwards and finally is positioned on the same surface as the first seat 11.

It can be seen from the above that, between the two states of the working chair unit in the embodiment, the two states can be freely switched by only sliding fit of the sliding 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 first seat 11 in the present embodiment is located between the two second seats 10, which facilitates the configuration of the first seat 11 with different shapes, and more particularly, with a slim shape that facilitates riding, such as a bicycle seat shape, a slim trapezoid shape, a saddle shape, etc.; as shown in fig. 17 to 19, the first seat 11 is provided in a bicycle seat shape, a saddle shape, and a slender trapezoid, respectively.

The utility model further provides a working chair, which comprises the working chair unit and the 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; the control of the air lever can adopt a wire control mode and also can adopt a mode of rotating and pressing the control lever; 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 second 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 first 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 first 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 connecting rod 64 and a second connecting rod 65, one end of the first connecting rod 64 is hinged to the first seat 11, the other end of the first connecting rod 64 is hinged to one end of the second connecting rod 65, the other end of the second connecting rod 65 is hinged to the second seat 10, the first connecting rod 64, the second connecting rod 65, the second seat 10 and the first seat 11 form a four-bar linkage, and the guide shaft 61 is disposed on the first connecting rod 64.

In the four-bar linkage, the first seat 11 is stationary, and when the guide shaft 61 is guided by the sliding groove 60, the first link 64 and the second link 65 are linked to drive the second 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.

Other ways readily suggested to those 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 first 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 vertically penetrates through the mounting seat 70, and the head of the sliding pin 72 is exposed out of the mounting seat 70 and responds to the pressing of the first 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 first seat 11 presses down the head of the sliding pin 72, the sliding pin moves toward the mounting seat 70, compressing the spring 38 and rotating the first torsion arm 731, and the second torsion arm 732 rotates, so as to urge 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 first seat 11 is lifted, the sliding pin 72 is restored 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 arranged pressing plate 77 is connected to the bottom surface of the first seat 11, and a pressing portion 78 that 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 first 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 chair is in the flat sitting state, the first 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 first seat 11 rises to be separated 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 first 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 first 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 first seat 11 further plays 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 first seat 11 is raised to a height suitable for a user, the bolt 50 is pulled to move along the support lug 51, and the bolt 50 penetrates through the positioning hole 36 of the movable rail 7 from the insertion hole 52 of the stationary rail 8, so that the position of the movable rail 7 is fixed, the position of the first seat 11 is fixed, and the first seat 11 plays a normal supporting role.

Claims (5)

1. Safety locking control mechanism of chair of standing, its characterized in that includes:

a base configured to connect to a seat support assembly; the base comprises a base body and a wane rotatably connected with the base body, and a return spring for returning the wane in a rotating manner is arranged between the wane and the base body;

the seat supporting piece is configured to support the hip and the leg of a human body, is arranged above the base and has a flat sitting state and a standing state, and descends or ascends when the seat supporting piece is switched between the flat sitting state and the standing state;

the sliding pin is connected with the seat body in a sliding manner, is vertically arranged, is pressed by the seat supporting piece to trigger sliding when the seat supporting piece is in a flat sitting state, and resets when the seat supporting piece rises and leaves the sliding pin;

and the locking pin is linked with the sliding pin, when the seat supporting piece is in a flat sitting state, the sliding pin slides to enable the locking pin to lock the rocker, and when the seat supporting piece is converted from the flat sitting state to the standing state, the sliding pin slides in the reverse direction and drives the locking pin to unlock the rocker.

2. A safety lock control mechanism for a chair for sitting as claimed in claim 1 wherein: the safety locking control mechanism also comprises a locking plate, an installation seat and a torsion spring, wherein the locking plate is fixedly arranged on the seat body, and a locking hole matched with the locking pin is arranged on 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 seat supporting piece; 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.

3. A safety lock control mechanism for a chair for sitting as claimed in claim 2, wherein: the locking pin support plate is fixedly arranged on the rocker and penetrates through the locking pin support plate.

4. A safety lock control mechanism for a chair for sitting as claimed in claim 1 wherein: the seat supporting piece comprises a first seat and a second seat, the first seat and the second seat support the buttocks and the legs of the human body together in a flat sitting state, and the sliding pin is pressed down by the first seat; in the standing posture state, only the first seat presents the posture of supporting the hip and the leg of the human body; when the sitting posture is converted into the standing posture, the first seat and the second seat move relatively.

5. A safety lock control mechanism for a chair for sitting as claimed in claim 4, wherein: the bottom surface of the first 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.

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