CN110547622A

CN110547622A - Seat changing mechanism and multipurpose seat

Info

Publication number: CN110547622A
Application number: CN201910833958.1A
Authority: CN
Inventors: 何基; 叶金; 蒋小兵
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2019-12-10

Abstract

the invention discloses a seat changing mechanism and a multipurpose seat, comprising a base, a slide rail assembly arranged on the base, a seat supporting piece and a seat body, wherein the slide rail assembly is provided with a movable rail and a static rail, the seat supporting piece is divided into a first seat and a second seat, the second seat is configured to be connected with the movable rail and always kept in a roughly horizontal state, and the first seat is hinged relative to the second seat; also includes a back support and a connecting rod. The present invention provides, first, a seat changing mechanism having two states: (1) the sitting state is like a common chair, and people can sit and work. (2) Standing posture state; the rear end of the first seat is raised, the front end of the first seat is turned downwards to keep drooping, and only the second seat is in a state of supporting the buttocks of a human body; the user can lean on the top of the chair seat in a standing state or ride on the top of the chair seat in a crossing manner, which accords with the physiological health of people. The invention further provides a multipurpose seat which is matched with the seat changing mechanism for use, and the seat changing mechanism is convenient and quick to sit and stand.

Description

Seat changing mechanism and multipurpose seat

Technical Field

The invention relates to the field of seats, in particular to a seat changing mechanism and a multipurpose seat.

background

the chair 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", invention name: the invention discloses a Chinese patent of a chair capable of sitting and standing, which 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 chair, a person can sit on the chair to 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.

This chair is through the cooperation that left side turned over board 10, right side turned over board 11 and crossbeam 9 and realizes the conversion between the seat station, but this structure is not suitable for taking the office chair of handrail and lift gas pole, and the structure is comparatively complicated, and the operation is comparatively troublesome, and the application condition has the limitation.

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.

US patent US5536067 provides a seat which is, by three air bars: the air rod 46 connected with the middle part of the seat frame 32 of the chair and the air rods 52 and 54 connected with the middle part of the support rod 32 of the support seat frame are mutually matched to realize the conversion between the sitting and the standing, the cost is higher, and the air rods are exposed under the chair seat, thus the appearance is influenced.

Disclosure of Invention

the invention overcomes the defects in the prior art and provides a seat changing mechanism which is more flexible and more beautiful, and a user can adjust the following components according to the needs: or sitting or standing, thereby providing convenience for the alternate transformation of sitting and standing postures; more importantly, the chair is suitable for the chair with the chair back, and meets the requirement of a user for standing and working.

Furthermore, the invention also provides a multipurpose seat, which is matched with the seat changing mechanism for use, simplifies the structure of the working chair for sitting and standing and can meet the sitting and standing requirements of users.

The technical scheme of the invention is realized as follows:

A seat changing mechanism comprising:

A base configured to connect to a seat support assembly;

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

the seat supporting piece is arranged on the front side of the sliding rail component and is divided into a first seat and a second seat which are arranged front and back, the second seat is configured to be connected with the movable rail and always kept in a roughly horizontal state, and the first seat is hinged relative to the second seat;

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

One end of the connecting rod is hinged with the base, and the other end of the connecting rod is hinged with the first seat. The invention firstly provides a seat changing mechanism which has two states, namely a flat sitting state and a standing state; when the chair is in a flat sitting state, the first seat and the second seat are kept in a roughly horizontal state and are basically positioned on the same surface, and the first seat and the second seat form a complete seat support part for people to sit and work like a common chair; when the sitting state needs to be converted into the standing state, the movable rail is driven by external force to move upwards, so that the second seat and the back support piece of the seat support piece are lifted upwards along with the upward movement of the movable rail, the rear end of the first seat is lifted due to the action of the connecting rod of the first seat, the front end of the first seat is turned downwards to keep sagging, and only the second seat is in a state of supporting the hip of a human body; the two states can be freely switched only by sliding fit of the sliding rail component; furthermore, the sliding rail assembly is arranged behind the back support piece, so that the sliding rail assembly does not occupy extra space.

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

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

Preferably, the seat support assembly comprises a lifting gas rod, supporting legs and a chassis, the chassis is provided with a seat body and a supporting plate, the supporting plate is connected to the upper end of the seat body, the upper end and the lower end of the lifting gas rod are respectively in plug-in fit with the seat body and the supporting legs, and the base is connected to the supporting plate. As another form, the seat support assembly is further provided with a base plate, which can be a tiltable base plate, so that not only the initial height of the base plate can be adjusted normally, but also the tilting function is provided in a flat sitting state, and the sitting is more comfortable.

Preferably, the bottom of the supporting foot is provided with a roller. To facilitate movement to any position.

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

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

Preferably, the fixed connection of the stationary rail and the base is as follows: the lower end of the static rail is connected with the base through a fastener, or the lower end of the static rail is welded and fixed with the base. The static rail can be detachably connected with the base and can be connected into a whole in a welding mode.

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

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

A multipurpose seat comprises the seat changing mechanism and a driving assembly, wherein the driving assembly is configured to drive a movable rail to slide along a static rail.

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

preferably, the driving assembly adopts an air rod or a hydraulic rod, one end of the driving assembly is connected with the back support member or the movable rail, and the other end of the driving assembly is connected with the base or the static rail. The air rod or the hydraulic rod can be opened or closed by a pull wire or a control rod, so that the air rod or the hydraulic rod can be extended or retracted.

Preferably, the driving assembly adopts a motor, and the motor is a push rod motor or a linear motor. The motor is adopted to control the movable rail to lift, the movement is smooth and reliable, and the movable rail can be conveniently controlled to stop at any desired position.

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.

a seat changing mechanism comprising:

A base configured to connect to a seat support assembly;

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

The seat supporting piece is arranged on the front side of the sliding rail component and is divided into a first seat and a second seat, the second seat is configured to be connected with the moving rail and always kept in a roughly horizontal state, an avoiding space is formed in the first seat, the second seat is selectively embedded into the avoiding space and is surrounded by the first seat, and the first seat is hinged relative to the moving rail;

One end of the connecting rod is hinged with the base, and the other end of the connecting rod is hinged with the first seat. The invention also provides another type of seat changing mechanism which also has two states, namely a flat sitting state and a standing state; when the chair is in a flat sitting state, the first seat and the second seat are both kept in a roughly horizontal state and are basically positioned on the same surface, the second seat is embedded in the first seat and is surrounded by the first seat, and the first seat and the second seat form a complete seat support part for people to sit and work like a common chair; when the sitting state needs to be converted into the standing state, the movable rail is driven by external force to move upwards, so that the second seat and the back support piece of the seat support piece are lifted upwards along with the upward movement of the movable rail, the rear end of the first seat is lifted due to the action of the connecting rod of the first seat, the front end of the first seat is turned downwards to keep sagging, and only the second seat is in a state of supporting the hip of a human body; the two states can be freely switched only by sliding fit of the sliding rail component; furthermore, the sliding rail assembly is arranged behind the back support piece, so that no extra space is occupied; the second seat is surrounded by the first seat in the circumferential direction, but the second seat is not necessarily completely surrounded, and a half-surrounded hiccup method may be employed, that is, the front side and the left and right sides of the second seat are surrounded by the first seat; this may facilitate a different configuration of the second seat, more particularly an elongated configuration for riding, such as an elongated trapezoidal shape or a bicycle seat.

Preferably, the second seat is configured to be connected to the movable rail, which means that: a bracket extending forwards is fixedly arranged on the movable rail, and the second seat is connected to the bracket. The second seat is fixedly connected to the movable rail, and the follow-up rail moves up and down.

Preferably, the rear side of the first seat is hinged to the running rail or the bracket. Make first seat rear side and the rear side of second seat basically flush like this, also make first seat relative to the movable rail when the upset, the front side can turn over great angle down, and the user can not receive the hindrance of first seat when two legs stride and ride on the second seat.

Preferably, at least the front half of the second seat is configured in an elongated shape facilitating riding by a user. So that the second seat, after being raised, is beneficial for the user to ride on the second seat like a saddle.

Preferably, the first seat is of a frame structure, and the avoidance space is reserved in the middle of the first seat. The first seat is of a frame structure, so that the weight is reduced, the cushion is convenient to configure, and an avoiding space is reserved.

preferably, when the second seat is embedded into the avoiding space, the second seat and the first seat are on the same plane which is favorable for flat sitting, and the second seat and the first seat form a finished seat support. In the flat sitting state, the two are embedded into a whole to form a flat seat surface, which is beneficial for users to sit and work.

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

Preferably, the shade is a cover, and the cover is fixedly connected with the back support.

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

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

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

The present invention first provides a seat changing mechanism having two states:

(1) A flat sitting state: when the chair is in a flat sitting state, the first seat and the second seat are kept in a roughly horizontal state and are basically positioned on the same plane, and the first seat and the second seat form a complete seat support part, so that people can sit and work like a common chair.

(2) standing posture state; when the sitting state needs to be converted into the standing state, the movable rail is driven by external force to move upwards, so that the second seat and the back support piece of the seat support piece are lifted upwards along with the upward movement of the movable rail, the rear end of the first seat is lifted, the front end of the first seat is turned downwards to keep drooping, and only the second seat is in a state of supporting the buttocks of a human body; the user can lean on the top of the chair seat in a standing state or ride on the top of the chair seat in a crossing manner; from the physiological and health aspects, the health-care tea is more consistent with the physiological health of people.

Secondly, the seat changing mechanism can be freely changed between two states and can be realized only by sliding fit of the slide rail assembly; compared with the prior art, the structure is simpler, the operation is simpler and more convenient, and the cost is lower.

Thirdly, the structure of the invention can be widely used for the traditional office chair without greatly modifying or adjusting the structure of the office chair, thereby not only meeting the requirements of users for working in a station, but also greatly reducing the application cost.

The invention further provides a multipurpose seat which is matched with the seat changing mechanism for use, is simple and convenient to operate, is convenient and quick to change a sitting position and a standing position, and can be widely applied to occasions such as offices, families, meeting rooms and the like.

drawings

FIG. 1 is a first perspective view of a multipurpose seat of embodiment 1 of the present invention;

FIG. 2 is a schematic perspective view of the multipurpose seat of embodiment 1 in a flat sitting position with seat supports hidden;

FIG. 3 is a second perspective view of the multipurpose seat of embodiment 1 of the present invention in a flat sitting position;

FIG. 4 is a third perspective view of the multipurpose seat of the embodiment 1 of the present invention in a flat sitting position;

FIG. 5 is a first perspective view of the multipurpose seat of embodiment 1 in a standing position;

FIG. 6 is a second perspective view of the multipurpose seat of embodiment 1 in a standing position;

FIG. 7 is a schematic perspective view of the multipurpose seat of embodiment 1 in a standing position with the seat supports hidden;

FIG. 8 is a first perspective view of a multipurpose seat in a flat-seated position with a second seat in the shape of a bicycle seat according to embodiment 2 of the present invention;

FIG. 9 is a second perspective view of the multipurpose seat of embodiment 2 of the present invention, wherein the second seat is a bicycle seat shape;

FIG. 10 is a first perspective view of the multipurpose seat of the embodiment 2 of the present invention, wherein the second seat is in the shape of a bicycle seat;

FIG. 11 is a second perspective view of the multipurpose seat of embodiment 2 of the present invention, wherein the second seat is in the shape of a bicycle seat;

FIG. 12 is a first perspective view of the multipurpose seat of the invention in the flat-seated position with the second seat being oval in shape according to embodiment 2;

FIG. 13 is a second perspective view of the multipurpose seat of the invention in embodiment 2 with the second seat being an oval;

FIG. 14 is a third perspective view of the multipurpose seat of the invention in the flat-seated state in the embodiment 2, in which the second seat is oval;

FIG. 15 is a first perspective view of the multipurpose seat of the invention in the standing posture with the second seat having an oval shape according to embodiment 2;

FIG. 16 is a second perspective view of the multipurpose seat of the invention in the standing posture with the second seat having an oval shape in embodiment 2;

FIG. 17 is a first perspective view of a utility seat of an elongated trapezoidal shape as a second seat in the embodiment 2 of the present invention;

FIG. 18 is a second perspective view of the multipurpose seat of embodiment 2 of the invention in which the second seat has an elongated trapezoidal shape in a flat-seated state;

FIG. 19 is a first perspective view of a utility seat having a second elongated trapezoidal shape in the standing posture in accordance with the present invention as set forth in embodiment 2;

fig. 20 is a side view of the seat changing mechanism in embodiments 1, 2, 3, and 4 of the present invention in a flat sitting state;

fig. 21 is a side view of the seat changing mechanism in embodiments 1, 2, 3, and 4 of the present invention in a standing position;

fig. 22 is a side view of the seat changing mechanism of the present invention in embodiments 1, 2, 3, and 4, which is switched between the flat-sitting state and the standing state;

FIG. 23 is a side view of the seat changing mechanism of embodiment 2 of the present invention in a flat sitting position with the seat support assembly 1 added to the chassis;

FIG. 24 is a schematic plan view of the sliding rail assembly of the embodiment 1 of the present invention when the shelter is in the flat-seated position;

FIG. 25 is a schematic plan view showing a push rod motor in accordance with embodiment 3 of the present invention;

FIG. 26 is a schematic plan view showing the movable and stationary rails having dovetail shapes according to the present invention in embodiment 1;

FIG. 27 is a schematic plan view showing the movable and stationary rails having T-shaped configurations according to embodiment 1 of the present invention;

FIG. 28 is a schematic plan view showing the structure of a slider combined with a guide rail according to embodiment 1 of the present invention;

Fig. 29 is a schematic plan view of the structure in which the slider 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 using handle control according to the present invention in embodiment 2;

FIG. 31 is a first plan view showing a first lock mechanism using a latch control according to embodiment 4 of the present invention;

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

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 first seat 10; a second seat 11; a back support 12; a shade 13; a connecting rod 14; a drive assembly 15; an accommodating space 16; an avoidance space 20; a bracket 21; a chassis 30; a base body 31; a support plate 32; a screw 33; a handle 34; a screw hole 35; the positioning holes 36; a pull rod 37; the cross bar 37 a; a spring 38; a rotating shaft 39; a motor 40; a sliding rail 41; a slide block 42; a motor base 43; a latch 50; a lug 51; a plug hole 52.

Detailed Description

in order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. 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 than one 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 terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations or specific explanations of the present invention.

in the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "specific embodiment" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The specific embodiment of the invention is as follows:

Example 1: the reference positions of all the components of the seat are defined firstly, when the seat is normally installed and used, the front of the seat is the front end and the front side, and the rear of the seat, including the position of the seat back, is the rear end and the rear side.

The present embodiment first provides a seat changing mechanism, as shown in fig. 1 to 7, and 20 to 22, including:

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 vertical setting is at slide rail set 6 on base 5, slide rail set 6 have mutual sliding fit's movable rail 7 and quiet rail 8, wherein quiet rail 8 and base 5 welded fastening, or through the fastener connection.

A seat support 9 provided on the front side of the slide rail assembly 6; the seat support 9 is divided into a first seat 10 and a second seat 11 which are arranged in a front-back manner, the second seat 11 is configured to be connected with the movable rail 7 and always kept in a substantially horizontal state, and the first seat 10 is hinged relative to the second seat 11; when the movable rail 7 slides upwards, the second seat 11 is driven to move upwards, and if the height of the second seat 11 does not meet the use requirement at the moment, the lifting air rod 2 can be controlled in an auxiliary manner to adjust the height of the base 5 so as to meet the requirement of the supporting height of the second seat 11.

A back support 12 arranged at the front side of the slide rail assembly 6 and above the seat support 9 and parallel to the slide rail assembly 6; 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.

The rear end of the connecting rod 14 is hinged with the base 5, and the front end of the connecting rod 14 is hinged with the first seat 10; when the second seat 11 and the back support 12 move up and raise along with the rail 7, the rear end of the first seat 10 is raised by the first seat 10 under the action of the connecting rod 14, and the front end of the first seat 10 is turned downwards and remains drooping.

Specifically, the method comprises the following steps: as shown in fig. 26 and 27, the movable rail 7 and the fixed rail 8 are dovetail-shaped in fig. 26, and T-shaped in fig. 27, so that the movable rail 7 and the fixed rail 8 are in sliding fit in the vertical direction and clamped in the transverse direction to prevent the movable rail and the fixed rail from being separated. Theoretically, the seat can be controlled to be changed by 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 smooth 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 slide block, 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 seat can be changed.

Theoretically, the sliding block 71 and the guide rail 81 can be matched to complete the change of the seat, 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 small, 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 increase the contact surfaces with the back support 12 and the base 5, and the mutual support is more stable.

more specifically, the seat changing mechanism has two states, namely a flat sitting state and a standing state; as shown in fig. 1 and 24, in the flat sitting state, the first seat 10 and the second seat 11 both maintain a substantially horizontal state, and both are substantially located on the same plane, at this time, the first seat 10 and the second seat 11 form a complete seat support 9, and the sliding track assembly 6 is completely shielded by the shielding object 13, and the chair is like a common chair, so that people can sit and work; fig. 5-7 are standing states, when it is necessary to switch from a flat sitting state to a standing state, an external force drives the movable rail 7 to move upward, the sliding block 71 in the movable rail 7 slides along the guide rail 81 on the stationary rail 8, so that the second seat 11 and the back support 12 of the seat support 9 both move upward and raise along with the movable rail 7, and the first seat 10 raises the rear end of the first seat 10 due to the action of the connecting rod 14, while the front end of the first seat 10 is turned downward and remains drooping, at this time, only the second seat 11 is in a state of supporting the buttocks of a human body, and the shielding object 13 partially shields the sliding rail assembly 6; the two states of the flat sitting and standing are freely converted and can be realized only by the sliding fit of the sliding rail component 6; and the slide rail assembly 6 is arranged behind the back support 12, so that no additional space is occupied.

The embodiment further provides a multipurpose seat, which comprises the seat changing mechanism and a driving assembly 15, wherein the driving assembly 15 has the function of driving the movable rail 7 to slide along the fixed rail 8; as shown in fig. 7, the driving assembly 15 in this embodiment employs a gas rod, which is relatively common and has a fast reaction speed; in the embodiment, the upper end of the air rod, namely the head 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 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 can be lifted and lowered.

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 11 and the back support 12 of the seat support 9 move upwards and are lifted along with the movable rail 7, and the second 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 second seat 11.

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

In addition, as shown in fig. 5 and 7, 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. 8-19 and 20-22, the difference from the embodiment 1 is that the first seat 10 of the embodiment is of a frame structure, and an avoiding space 20 is provided in the middle of the first seat 10; the second seat 11 is selectively embedded into the avoidance space 20 and is surrounded by the first seat 10 in the circumferential direction, and the first seat 10 is hinged relative to the movable rail 7; a bracket 21 extending forwards is fixedly arranged on the movable rail 7, the second seat 11 is connected to the bracket 21, and the second seat 11 moves up and down along with the movable rail 7. The rear side of the first seat 10 is hinged to the bracket 21, and when the second seat 11 is inserted into the escape space 20, the second seat 11 and the first seat 10 are located on the same plane which is favorable for flat sitting, and both form the completed seat support 9. In the flat sitting state, the two are embedded into a whole to form a flat seat surface, which is beneficial for users to sit and work.

Further, the front half of the second seat 11 is configured in an elongated shape that facilitates riding by the user, so that the second seat 11 facilitates riding by the user on the second seat 11 as riding on a saddle after being raised. Specifically, as shown in fig. 8-19, the second seat 11 is respectively configured as a bicycle seat shape, an oval shape, and a slender trapezoid shape, and more specifically, fig. 8 and 9 are a flat sitting state of the bicycle seat shape, and fig. 10 and 11 are standing states of the bicycle seat shape; FIGS. 12-14 are oval flat sitting positions, and FIGS. 15 and 16 are oval standing positions; fig. 17 and 18 show the flat sitting position of the elongated trapezoid, and fig. 19 shows the standing position of the elongated trapezoid.

Further, as shown in fig. 23, in the present embodiment, the seat support assembly 1 includes a chassis 30 besides the lifting air rod 2 and the supporting legs 3, in order to make the user more comfortable when sitting on the seat, the chassis 30 can be a tiltable chassis, and the chassis 30 can be purchased from the market, which is not the gist of the present invention; in this embodiment, the chassis 30 has a seat body 31 and a supporting plate 32, the supporting plate 32 is connected to the upper end of the seat body 31 and rotates backwards around the seat body 31 through a rotating shaft 39, the upper and lower ends of the lifting air rod 2 are respectively inserted into and matched with the seat body 31 and the supporting legs 3, and the base 5 is connected to the supporting plate 32. Therefore, the initial height of the base 5 can be normally adjusted, and the sitting posture can be more comfortable because the base has the function of inclining when sitting flat.

Specifically, when a user leans backwards, the rear end of the supporting plate 32 is driven to rotate downwards, the front end of the supporting plate 32 is connected with a pull rod 37 linked with the supporting plate, the front end of the supporting plate 32 drives the pull rod 37 to move upwards, the lower end of the pull rod 37 upwards extrudes a spring 38 through a cross rod 37a, the spring 38 is stressed and compressed to generate reset elastic force, when the user restores to a normal sitting posture, namely the back is forwards, the spring 38 releases the elastic force, and the supporting plate 32 restores to the initial state under the action of the elastic force.

in addition, the difference from the embodiment 1 is that the movable rail 7 is driven to slide upwards along the fixed rail 8 manually by manpower; when the movable rail 7 slides to a position corresponding to the standing posture state, in order to keep the movable rail 7 and the stationary rail 8 relatively fixed and prevent the movable rail 7 from sliding downwards, a locking device is provided in the present embodiment, as shown in fig. 30, the locking device includes a handle 34 with a screw 33, a screw hole 35 provided on the stationary rail 8, and a plurality of positioning holes 36 longitudinally provided on the movable rail 7, the screw 33 is inserted into 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 second 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 second seat 11 further plays a normal supporting role.

Example 3: as shown in fig. 25, the difference from embodiment 1 is that the driving assembly 15 of the multipurpose seat uses a motor 40, the motor 40 is a linear motor, a sliding block 42 provided 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 opening and closing 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 4: as shown in fig. 31 and 32, the difference from the embodiment 2 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, where the bolt 50 is inserted into a preset insertion hole 52 on the stationary rail 8 through the support lug 51; when the second 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 second seat 11 is fixed, and the second seat 11 plays a normal supporting role.

Claims

1. A seat changing mechanism characterized by comprising:

A base configured to connect to a seat support assembly;

one end of the connecting rod is hinged with the base, and the other end of the connecting rod is hinged with the first seat.

2. The seat changing mechanism according to claim 1, wherein: the base is supported above the ground through the seat support assembly, and the height of the base from the ground is 360-550 cm.

3. The seat changing mechanism according to claim 1, wherein: the seat support supporting component comprises a lifting air rod and supporting legs, and the upper end and the lower end of the lifting air rod are respectively in inserting fit with the base and the supporting legs.

4. The seat changing mechanism according to claim 1, wherein: the seat support supporting assembly comprises a lifting gas rod, supporting legs and a chassis, the chassis is provided with a seat body and a supporting plate, the supporting plate is connected to the upper end of the seat body, the upper end and the lower end of the lifting gas rod are respectively in plug-in fit with the seat body and the supporting legs, and the base is connected to the supporting plate.

5. The seat changing mechanism according to claim 3 or 4, wherein: the bottom of the supporting foot is provided with a roller.

6. the seat changing mechanism according to claim 1, wherein: the back support piece is arranged on the front side of the sliding rail assembly, and the back support piece and the sliding rail assembly are arranged in parallel.

7. the seat changing mechanism according to claim 1, wherein: the back support piece is arranged on the front side of the sliding rail assembly, a shielding object is further arranged on the back of the back support piece, the shielding object and the back support piece are fixed relatively, the sliding rail assembly is arranged between the shielding object and the back support piece, and the shielding object completely or partially shields the sliding rail assembly.

8. The seat changing mechanism 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 changing mechanism according to claim 1, wherein: the movable rail and the static rail are fixed relatively, the locking device comprises a handle with a screw rod, a screw hole and a plurality of positioning holes which are longitudinally arranged, the screw hole is arranged on one of the movable rail or the static rail, the screw rod is arranged in the screw hole in a penetrating mode and is in threaded connection with the screw hole, and the positioning holes are arranged on the other of the movable rail or the static rail.

10. The seat changing mechanism according to claim 1, wherein: the movable rail and the static rail are kept relatively fixed through the locking device, the locking device comprises a bolt, a support lug and a plurality of positioning holes which are longitudinally arranged, the bolt is arranged on one of the movable rail or the static rail through the support lug and penetrates through a preset inserting hole in the movable rail or the static rail, and the positioning holes are arranged on the other of the movable rail or the static rail.

11. a multipurpose seat, characterized in that: comprising the seat changing mechanism of any one of claims 1-8 and a drive assembly configured to drive the movable rail to slide along the stationary rail.

12. The utility chair of claim 11, wherein: the driving component is any one of an air rod, a hydraulic rod or a motor.

13. The utility seat of claim 12, wherein: the driving assembly adopts an air rod or a hydraulic rod, one end of the driving assembly is connected with the back support piece or the movable rail, and the other end of the driving assembly is connected with the base or the static rail.

14. the utility seat of claim 12, wherein: the driving assembly adopts a motor, and the motor is a push rod motor or a linear motor.

15. the utility chair of claim 11, wherein: the movable rail and the static rail form an accommodating space therebetween, and the driving assembly is arranged in the accommodating space.

16. A seat changing mechanism characterized by comprising:

A base configured to connect to a seat support assembly;

17. The seat changing mechanism of claim 16, wherein: the second seat is configured to be connected with the movable rail, and the second seat is characterized in that: a bracket extending forwards is fixedly arranged on the movable rail, and the second seat is connected to the bracket.

18. The seat changing mechanism of claim 17, wherein: the rear side of the first seat is hinged with the movable rail or the bracket.

19. the seat changing mechanism of claim 16, wherein: at least a front half of the second seat is configured to be an elongated shape that facilitates riding by a user.

20. The seat changing mechanism of claim 16, wherein: the first seat is of a frame structure, and the avoidance space is reserved in the middle of the first seat.

21. the seat changing mechanism according to claim 16 or 20, wherein: when the second seat is embedded into the avoiding space, the second seat and the first seat are positioned on the same plane beneficial to flat seating, and the second seat and the first seat form a finished seat supporting piece.

22. the seat changing mechanism of claim 16, wherein: the base is supported above the ground through the seat support assembly, and the height of the base from the ground is 360-550 cm.

23. The seat changing mechanism of claim 16, wherein: the seat support supporting component comprises a lifting air rod and supporting legs, and the upper end and the lower end of the lifting air rod are respectively in inserting fit with the base and the supporting legs.

24. the seat changing mechanism of claim 16, wherein: the seat support supporting assembly comprises a lifting gas rod, supporting legs and a chassis, the chassis is provided with a seat body and a supporting plate, the supporting plate is connected to the upper end of the seat body, the upper end and the lower end of the lifting gas rod are respectively in plug-in fit with the seat body and the supporting legs, and the base is connected to the supporting plate.

25. the seat changing mechanism of claim 16, wherein: the back support piece is arranged on the front side of the sliding rail assembly, and the back support piece and the sliding rail assembly are arranged in parallel or the sliding rail assembly is embedded into the back support piece.

26. the seat changing mechanism of claim 16, wherein: the back support piece is arranged on the front side of the sliding rail assembly, a shielding object is further arranged on the back of the back support piece, the shielding object and the back support piece are fixed relatively, the sliding rail assembly is arranged between the shielding object and the back support piece, and the shielding object completely or partially shields the sliding rail assembly.

27. the seat changing mechanism of claim 26, wherein: the shielding object is a cover shell, and the cover shell is fixedly connected with the back support piece.

28. The seat changing mechanism of claim 16, wherein: the movable rail and the static rail are fixed relatively, the locking device comprises a handle with a screw rod, a screw hole and a plurality of positioning holes which are longitudinally arranged, the screw hole is arranged on one of the movable rail or the static rail, the screw rod is arranged in the screw hole in a penetrating mode and is in threaded connection with the screw hole, and the positioning holes are arranged on the other of the movable rail or the static rail.

29. The seat changing mechanism of claim 16, wherein: the movable rail and the static rail are kept relatively fixed through the locking device, the locking device comprises a bolt, a support lug and a plurality of positioning holes which are longitudinally arranged, the bolt is arranged on one of the movable rail or the static rail through the support lug and penetrates through a preset inserting hole in the movable rail or the static rail, and the positioning holes are arranged on the other of the movable rail or the static rail.

30. A multipurpose seat, characterized in that: comprising the seat changing mechanism of any of claims 16-27 and a drive assembly configured to drive the movable rail to slide along the stationary rail.

31. the utility seat of claim 30, further comprising: the driving component is any one of an air rod, a hydraulic rod or a motor.

32. The utility seat of claim 31, further comprising: the driving assembly adopts an air rod or a hydraulic rod, one end of the driving assembly is connected with the back support piece or the movable rail, and the other end of the driving assembly is connected with the base or the static rail.

33. The utility seat of claim 31, further comprising: the driving assembly adopts a motor, and the motor is a push rod motor or a linear motor.

34. The utility seat of claim 30, further comprising: the movable rail and the static rail form an accommodating space therebetween, and the driving assembly is arranged in the accommodating space.