CN220655168U - Synchronous stable lifting chair - Google Patents

Abstract

The utility model relates to the technical field of household articles, and provides a synchronous stable lifting chair which comprises a base, a backrest, a seat body and a lifting mechanism, wherein the backrest is provided with a first storage position and a second lifting position, the seat body is provided with a third storage position and a fourth lifting position, the lifting mechanism comprises a first lifting seat, a supporting component and a pulley module, the first lifting seat is movably arranged on the base, the supporting component is connected between the first lifting seat and the seat body, the pulley module is connected between the backrest and the first lifting seat, when the seat body moves from the third storage position to the fourth lifting position, the seat body drives the supporting component to synchronously move, the supporting component drives the first lifting seat to lift, and the first lifting seat drives the pulley module to pull the backrest to move from the first storage position to the second lifting position. The synchronous stable lifting chair is stable in lifting and convenient to operate and convenient to store.

Description

Synchronous stable lifting chair

Technical Field

The utility model relates to the technical field of household articles, in particular to a synchronous stable lifting chair.

Background

The lifting chair is a swivel chair with a height-adjustable seat surface and a horizontally rotatable seat surface, and people commonly call the chair by the names of a swivel lifting chair, a swivel chair, a computer chair, an office chair and the like. The seat surface can be lifted up and down because the lifting device for adjusting the height is arranged below the seat surface of the seat. According to whether the lifting device is pneumatic or hydraulic, the lifting chairs in the prior art are divided into an air pressure lifting chair and a hydraulic lifting chair. Because the hydraulic lifting chair is expensive in cost, relatively complex in structure, and not sensitive enough in height adjustment, the hydraulic lifting chair has a low market share in China. The pneumatic lifting chair has the characteristics of low cost, simple structure, flexible operation and the like, and is popular with consumers. It is estimated that more than 80% of office buildings and companies are using air pressure lift chairs.

But the height of the seat can only be adjusted to current lift chair mostly, and the height of back is mostly can not be adjusted, and lift adjustment mechanism structure loaded down with trivial details, use the operation inconvenient, inconvenient accomodate it, and user's use experience is poor.

Disclosure of Invention

The utility model provides a synchronous stable lifting chair, which is used for solving the technical defects that a lifting adjusting mechanism in the prior art is complicated in structure, inconvenient to use and operate, inconvenient to store, and poor in user experience, and realizes lifting of a backrest through a simple structure, and the synchronous stable lifting chair can be conveniently stored by only using the gravity of a person, is quite simple and convenient to operate, and can save attractive space.

The utility model provides a synchronous stable lifting chair, comprising:

the base is provided with a mounting groove;

a backrest movably mounted to one side of the base, the backrest having a first storage position and a second raised position on a movement locus of the backrest, wherein the backrest encloses one side of the base when the backrest is in the first storage position; when the backrest is in the second raised position, the backrest is away from the base;

the seat body is movably arranged above the backrest, and is provided with a third storage position and a fourth descending position on the moving track of the seat body, wherein when the seat body is positioned at the third storage position, the seat body is enclosed on one side of the base; when the seat body is positioned at the fourth descending position, the seat body is abutted against the base; and

the lifting mechanism comprises a first lifting seat, a supporting component and a pulley module, wherein the first lifting seat is movably arranged on the base, the supporting component is connected between the first lifting seat and the seat body, the pulley module is connected between the backrest and the first lifting seat, the seat body drives the supporting component to synchronously move when the seat body moves from a third storage position to a fourth descending position, the supporting component drives the first lifting seat to lift, and the first lifting seat drives the pulley module to drag the backrest to move from the first storage position to the second lifting position.

According to the synchronous stable lifting chair provided by the utility model, the first lifting seat comprises the fixed plate, the plurality of guide rods and the plurality of sliding blocks, the fixed plate is fixedly connected to the base, the plurality of guide rods are arranged on the fixed plate at intervals, the guide rods extend from the fixed plate towards the top end direction of the seat body, the sliding blocks are slidably connected to the two adjacent guide rods, and the supporting component and the pulley module are connected with the sliding blocks.

According to the synchronous stable lifting chair provided by the utility model, the pulley module comprises the fixed pulley block, the movable pulley block and the traction piece, the lifting mechanism further comprises the stand column, the stand column is arranged on the base, the fixed pulley block is fixedly arranged on the stand column, the movable pulley block is fixedly connected to the sliding block, the traction piece is penetrated between the fixed pulley block and the movable pulley block at intervals, one end of the traction piece is fixedly connected with the stand column, and the other end of the traction piece is fixedly connected with the backrest.

According to the synchronous stable lifting chair provided by the utility model, the movable pulley block comprises the first movable pulley and the second movable pulley, the fixed pulley block comprises the first fixed pulley and the second fixed pulley, the first movable pulley and the second movable pulley are connected with the sliding block in parallel and at intervals, the first fixed pulley is arranged at one end of the upright post far away from the base, the second fixed pulley is arranged at the middle part of the upright post, and the traction piece sequentially passes through the first movable pulley, the first fixed pulley, the second movable pulley and the second fixed pulley.

According to the synchronous stable lifting chair provided by the utility model, the first lifting seat further comprises a limiting plate, wherein the limiting plate is connected to one end, away from the bottom of the connection, of two adjacent guide rods, and is positioned between the second fixed pulley and the movable pulley block.

According to the synchronous stable lifting chair provided by the utility model, the supporting component comprises the first supporting plate and the second supporting plate, and the first supporting plate and the second supporting plate are arranged between the sliding block and the inner wall surface of the top end of the seat body at intervals.

According to the synchronous stable lifting chair provided by the utility model, the synchronous stable lifting chair further comprises a second lifting seat, the second lifting seat comprises a connecting plate, a plurality of guide posts and a movable sleeve, the connecting plate and the guide posts are arranged in an extending mode along the moving direction of the backrest, the guide posts are arranged on the connecting plate at intervals, the movable sleeve is sleeved on at least two guide posts, one side of the movable sleeve, which is away from the seat, is fixedly connected with the backrest, and one side of the movable sleeve, which is away from the seat, is connected with one end of the pulley module.

According to the synchronous stable lifting chair provided by the utility model, the second lifting seat further comprises a first limit sleeve and a second limit sleeve, and the first limit sleeve is arranged at one end of the guide post far away from the base and is fixedly connected with the connecting plate; the second limiting sleeve is arranged at one end, close to the base, of the guide post and is fixedly connected with the connecting plate, and the first limiting sleeve and the second limiting sleeve are used for limiting the moving distance of the moving sleeve.

According to the synchronous stable lifting chair provided by the utility model, the seat body is provided with the mounting cavity, one side of the seat body, which is close to the backrest, is provided with the connecting port, the second lifting seat is arranged in the mounting cavity, and the movable sleeve extends out of the mounting cavity from the connecting port to be connected with the backrest.

According to the synchronous stable lifting chair provided by the utility model, one side of the base body, which faces the base, is provided with the opening, the opening is connected with the mounting cavity, the base is provided with the mounting groove, the base further comprises the coaming part Zhou Sheyu, the outer peripheral side of the mounting groove of the coaming part extends towards the top end direction of the base body, and the coaming part is matched with the opening to limit the circumferential direction of the base body.

According to the seat back lifting device, the first lifting seat in the lifting mechanism, the supporting component and the pulley module are matched in a transmission mode, the seat body moves downwards from the third storage position to the fourth descending position under the dead weight of a user, the seat body drives the first lifting seat to move so as to drive the pulley module connected with the first lifting seat to drag, and then the backrest can be driven to move to the second lifting position from the first storage position, so that the backrest can automatically lift along with the sitting process of the user, after the user leaves the seat body, the seat body descends according to the self gravity action after losing the dead weight of the user, the backrest passes through the pulley module to drive the first lifting seat to move upwards so as to act the seat body to ascend to the third storage position from the fourth descending position, the backrest automatically descends and the seat body automatically ascends, the backrest is lowered, the whole height of the synchronous lifting seat body is lowered, and the seat back is smoothly lifted, and the seat back lifting device is convenient to store and attractive, and the seat back lifting device can save space.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a synchronous automatic lifting chair according to the present utility model;

FIG. 2 is a partial cross-sectional view of the synchronized automatic lifting chair provided by the utility model in a storage state;

FIG. 3 is a partial cross-sectional view of the synchronized automatic lifting chair of the present utility model in an unfolded state;

fig. 4 is an application scenario diagram of a storage state of a synchronous automatic lifting chair provided by the utility model;

fig. 5 is an application scenario diagram of the synchronous automatic lifting chair in the unfolded state.

Reference numerals:

10. synchronous stable lifting chair;

100. a base; 110. a mounting groove; 120. a coaming part;

200. a backrest;

300. a base; 310. a mounting cavity; 320. an opening;

400. a lifting mechanism; 410. a first lifting seat; 411. a fixing plate; 412. a guide rod; 413. a slide block; 414. a limiting plate; 420. a support assembly; 421. a first support plate; 422. a second support plate; 430. a pulley module; 431. a fixed pulley block; 431a, a first fixed pulley; 431b, a second fixed pulley; 432. a movable pulley block; 432a, a first movable pulley; 432b, a second movable pulley; 433. a traction member;

500. a second lifting seat; 510. a connecting plate; 520. a guide post; 530. a moving sleeve; 540. a first stop collar; 550. the second limit sleeve;

20. a table.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

The utility model provides a synchronous stable lifting chair.

In the embodiment of the present utility model, as shown in fig. 1 to 3, the synchronized stable elevating chair 10 includes a base 100, a backrest 200, a base 300, and an elevating mechanism 400, the base 100 having a mounting groove 110; the backrest 200 is movably installed at one side of the base 100, and the backrest 200 has a first storage position and a second raised position on a moving track of the backrest 200, wherein the backrest 200 is enclosed at one side of the base 100 when the backrest 200 is located at the first storage position; when the backrest 200 is in the second raised position, the backrest 200 is away from the base 100; the seat 300 is movably mounted above the backrest 200, and the seat 300 has a third storage position and a fourth descending position on a moving track of the seat 300, wherein when the seat 300 is located at the third storage position, the seat 300 is enclosed on one side of the base 100; when the base 300 is located at the fourth descending position, the base 300 is abutted against the base 100; the lifting mechanism 400 comprises a first lifting seat 410, a supporting component 420 and a pulley module 430, wherein the first lifting seat 410 is movably arranged on the base 100, the supporting component 420 is connected between the first lifting seat 410 and the seat body 300, the pulley module 430 is connected between the backrest 200 and the first lifting seat 410, when the seat body 300 moves from a third storage position to a fourth descending position, the seat body 300 drives the supporting component 420 to synchronously move, the supporting component 420 drives the first lifting seat 410 to lift, and the first lifting seat 410 drives the pulley module 430 to pull the backrest 200 to move from the first storage position to the second lifting position.

Specifically, in the embodiment of the present utility model, referring to fig. 4 and 5, the synchronized stable lifting chair 10 may be applied to a meeting room or a dining table, etc., and specifically, a plurality of synchronized stable lifting chairs 10 are arranged at intervals on both sides of the table 20, and when the synchronized stable lifting chair is required to be used, the outer circumference of the table 20 can be moved out, the backrest 200 can be automatically lifted up after sitting down, and the backrest 200 can be automatically lowered after leaving the synchronized stable lifting chair 10, in a storage state, and then pushed under the table 20 to be stored, so as to save a part of the space of the meeting room or the living room, etc., and maximize the space utilization.

In the embodiment of the present utility model, the synchronous automatic lifting chair comprises a base 100, a base 300, a backrest 200 and a lifting mechanism 400, wherein the base 100 is generally in a flat plate shape, the base 100 has an upper end surface and a lower end surface which are opposite, the lower end surface is used for being supported against the ground, the upper end surface is provided with a mounting groove 110, the base 300 is generally in a cylindrical shape, one end of the base 300 is provided with an opening 320, the base 300 is covered on the base 100 and is arranged opposite to the mounting groove 110, the outer wall surface at the top end of the base 300 is provided with a sitting position for being provided for a user to sit, the base 300 and the base 100 are enclosed to form a mounting cavity 310, the mounting cavity 310 is used for being provided with the lifting mechanism 400, the backrest 200 is generally in a wedge shape, and the utility model can be in other embodiments as well, such as a flat plate shape or a curve shape, and the like. The backrest 200 is movably disposed at one side of the base 300, and the lifting mechanism 400 is connected between the backrest 200, the base 300 and the base 100, for controlling the lifting of the backrest 200 according to the movement of the base 300, specifically, the backrest 200 has a first storage position and a second lifting position on the moving path thereof, and the base 300 has a third storage position and a fourth descending position. When the automatic lifting chair is used, a user sits on the sitting position, the gravity of the user can apply a downward acting force to the seat body 300, so that the seat body 300 moves downwards from the third storage position to the fourth storage position, the lifting mechanism 400 is operated in the descending process of the seat body 300, the backrest 200 is driven to move from the first storage position to the second storage position through the lifting mechanism 400, the automatic lifting of the backrest 200 is completed, after the user leaves the sitting position, namely, after the downward acting force applied to the seat body 300 is removed, the backrest 200 can be lowered from the second storage position to the first storage position under the action of the gravity of the user, and the lifting mechanism 400 is reacted to the seat body 300 in the moving process, so that the seat body 300 moves upwards from the fourth storage position to the third storage position, and the automatic storage of the automatic synchronous lifting chair is completed. Thus, the backrest 200 automatically descends and the seat 300 automatically ascends, thereby reducing the overall height of the synchronous stable lifting chair 10, thereby achieving the effects of convenient storage and cleaning, and saving and beautifying space.

According to the seat body 300, the seat body 300 moves downwards from the third storage position to the fourth storage position under the dead weight of a user through the transmission cooperation of the first lifting seat 410, the supporting component 420 and the pulley module 430 in the lifting mechanism 400, the seat body 300 drives the first lifting seat 410 to move so as to drive the pulley module 430 connected with the first lifting seat to drag, and then the backrest 200 can be driven to move from the first storage position to the second lifting position, so that the backrest 200 can automatically lift along with the sitting process of the user, after the user leaves the seat body 300, the backrest 200 descends according to the gravity action of the user after the dead weight of the user is lost, so that the remote rod component is driven to drive the gear rack transmission component to move the seat body 300 to rise from the fourth storage position, the automatic descent of the backrest 200 and the automatic ascent of the seat body 300 are realized, the whole height of the synchronous lifting chair 10 is reduced, and the effects of convenient storage and sweeping are achieved, and attractive space is saved.

Referring to fig. 2 and 3, in an embodiment, the first lifting seat 410 includes a fixing plate 411, a plurality of guide rods 412 and a plurality of sliding blocks 413, the fixing plate 411 is fixedly connected to the base 100, the plurality of guide rods 412 are arranged on the fixing plate 411 at intervals, the guide rods 412 extend from the fixing plate 411 towards the top end direction of the seat 300, the sliding blocks 413 are slidably connected to two adjacent guide rods 412, and the supporting assembly 420 and the pulley module 430 are connected to the sliding blocks 413. It can be appreciated that the fixing plate 411 is used to support and connect to the base 100, and one end of the guide rod 412 is fixedly connected to the fixing plate 411, and the other end extends toward a direction away from the top end of the base 300. The sliding blocks 413 are slidably connected to the guide rods 412, in this embodiment, a plurality of guide rods 412 and a plurality of sliding blocks 413 are provided, wherein the sliding blocks 413 and the guide rods 412 are arranged in a one-to-one correspondence, and in order to realize synchronous sliding between the sliding blocks 413, two adjacent sliding blocks 413 can be connected through the connecting plate 510, and the supporting and stable movement capability of the first lifting seat 410 can be improved due to the arrangement of the plurality of guide rods 412 and the plurality of sliding blocks 413.

Referring to fig. 2 and 3, in some embodiments, the pulley module 430 includes a fixed pulley block 431, a movable pulley block 432, and a traction member 433, the lifting mechanism 400 further includes a stand column, the stand column is disposed on the base 100, the fixed pulley block 431 is fixedly disposed on the stand column, the movable pulley block 432 is fixedly connected to the slider 413, the traction member 433 is disposed between the fixed pulley block 431 and the movable pulley block 432 at intervals, one end of the traction member 433 is fixedly connected with the stand column, and the other end is fixedly connected with the backrest 200. It will be appreciated that the provision of the uprights on the base 100 provides vertical support for the fixed pulley blocks 431; the fixed pulley block 431 is fixedly arranged on the upright post and guides the whole pulley module to rotate and act the backrest 200 at a fixed ratio; the movable pulley block 432 is fixedly connected to the slider 413, and is used for lifting the backrest 200 along with the lifting back and forth action of the seat body 300 through the movement of the slider 413. The traction piece 433 is arranged between the fixed pulley block 431 and the movable pulley block 432 in a penetrating way at intervals and is used for connecting and moving the sliding block 413, the movable pulley block 432, the fixed pulley block 431 and the backrest 200 in series. In this way, the traction member 433 can act the movement of the seat 300 on the backrest 200 through the fixed pulley group 431 and the movable pulley group 432 according to a certain ratio, thereby achieving the lifting of the backrest 200.

Specifically, referring to fig. 2, the movable pulley block 432 includes a first movable pulley 432a and a second movable pulley 432b, the fixed pulley block 431 includes a first fixed pulley 431a and a second fixed pulley 431b, the first movable pulley 432a and the second movable pulley 432b are rotatably connected to the slider 413 side by side at intervals, the first fixed pulley 431a is disposed at one end of the upright far from the base 100, the second fixed pulley 431b is disposed at the middle of the upright, and the traction member 433 sequentially passes through the first movable pulley 432a, the first fixed pulley 431a, the second movable pulley 432b and the second fixed pulley 431b. In the present embodiment, the movable pulley block 432 includes a first movable pulley 432a and a second movable pulley 432b, and they are rotatably connected to the slider 413 side by side at intervals. The function of the movable pulley block 432 is to provide a force transmission to guide the backrest 200 to move under the traction member 433; the fixed pulley block 431 includes a first fixed pulley 431a and a second fixed pulley 431b. The first fixed pulley 431a is located at the end of the upright far from the base 100, and the second fixed pulley 431b is located at the middle of the upright. The fixed pulley block 431 is used to provide support, change the motion path ratio and change the traction direction. The traction member 433 is used to be connected to the backrest 200, and smoothly performs the lifting and lowering movement of the backrest 200 by the cooperation of the movable pulley block 432 and the fixed pulley block 431.

Referring to fig. 2 and 3, in some embodiments, the first lifting seat 410 further includes a limiting plate 414, and the limiting plate 414 is connected to an end of two adjacent guide rods 412 away from the connection bottom, and is located between the second fixed pulley 431b and the movable pulley block 432. In this embodiment, the setting height of the limiting plate 414 is lower than the height of the second fixed pulley 431b, and the limiting plate 414 is disposed between the second fixed pulley 431b and the movable pulley block 432 in a penetrating manner, so as to limit the sliding block 413 and the movable pulley block 432, thereby improving the operation stability and safety of the lifting mechanism 400.

Referring to fig. 3, in some embodiments, the support assembly 420 includes a first support plate 421 and a second support plate 422, and the first support plate 421 and the second support plate 422 are spaced between the slider 413 and an inner wall surface of the top end of the housing 300. It will be appreciated that the first support bar and the second support bar are disposed on the slider 413 at intervals and connected toward the top end of the base 300. The first bracing piece and the second bracing piece are the contained angle setting with the top surface of base 100, so can reduce the high setting of pedestal 300, conveniently set up the height of pedestal 300, conveniently accomodate synchronous steady lift chair 10.

Referring to fig. 2 and 3, in some embodiments, according to the synchronous stable lifting chair 10 provided by the present utility model, the synchronous stable lifting chair 10 further includes a second lifting seat 500, the second lifting seat 500 includes a connection plate 510, a plurality of guide posts 520 and a moving sleeve 530, the connection plate 510 and the guide posts 520 are arranged to extend along the moving direction of the backrest 200, the plurality of guide posts 520 are arranged on the connection plate 510 at intervals, the moving sleeve 530 is sleeved on at least two guide posts 520, one side of the moving sleeve 530 away from the seat 300 is fixedly connected with the backrest 200, and one side of the moving sleeve 530 away from the seat 300 is connected with one end of the pulley module 430. It is understood that the present application assists in the lifting movement of the backrest 200 by providing the second lifting seat 500. The sliding of the moving sleeve 530 on the guide post 520 enables the second lifting seat 500 to move correspondingly along with the lifting direction of the backrest 200. The moving sleeve 530 is connected with one end of the traction member 433 such that the traction member 433 can act on the second elevating seat 500, thereby achieving smooth elevation of the backrest 200. While ensuring the cooperative movement of the pulley module 430 and the second elevating seat 500. This structure can provide more steady and reliable lifting operation, has strengthened the travelling comfort and the use experience of chair.

Further, in an embodiment, the second lifting seat 500 further includes a first stop collar 540 and a second stop collar 550, where the first stop collar 540 is disposed at one end of the guide post 520 away from the base 100 and is fixedly connected with the connection plate 510; the second stop collar 550 is disposed at one end of the guide post 520 near the base 100 and is fixedly connected to the connection plate 510, and the first stop collar 540 and the second stop collar 550 are used for limiting the moving distance of the moving collar 530. When the backrest 200 performs the lifting movement, the moving sleeve 530 moves along with the sliding of the guide posts 520. When the moving sleeve 530 contacts the first stopper 540, its moving distance is limited to a certain range, preventing excessive movement. Also, when the moving sleeve 530 contacts the second stop collar 550, the moving range thereof is also limited. Thus, by providing the two stop collars, the moving distance of the moving collar 530 can be ensured to be always within an acceptable range, and the situation that the design requirement is exceeded or unnecessary damage is caused can be avoided. The position and shape of the stop collar can be determined according to specific design requirements to achieve the desired movement range limiting effect.

Referring to fig. 2, in an embodiment, a connection port is provided on a side of the seat body 300 adjacent to the backrest 200, the second lifting seat 500 is provided in the mounting cavity 310, and the moving sleeve 530 extends out of the mounting cavity 310 from the connection port to be connected with the backrest 200. It will be appreciated that the second elevating seat 500 is fixedly disposed within the mounting cavity 310, and the movable sleeve 530 extends from the mounting cavity 310 through the connection port and is connected to the backrest 200. Specifically, the second elevating seat 500 is placed in the installation cavity 310 of the seat, protrudes from the installation cavity 310 through the connection port moving sleeve 530, and is connected with the backrest 200. The attachment port provides a convenient location for the movement sleeve 530 to extend from within the seat mounting cavity 310 and be tightly coupled to the backrest 200. The elevating movement of the backrest 200 can be effectively controlled and stable support can be provided.

Referring to fig. 2 and 3, in an embodiment, the base 100 has a mounting groove 110, the base 100 further includes a shroud portion 120, and the shroud portion 120 is circumferentially disposed on an outer circumferential side of the mounting groove 110 and extends toward a top end direction of the base 300, and the shroud portion 120 cooperates with the opening 320 to limit a circumferential direction of the base 300. It will be appreciated that the shroud portion 120 extends toward the top of the housing 300 and cooperates with the opening 320 in the housing 300 to provide a circumferential limit to the housing 300, thereby limiting movement of the housing 300 in the circumferential direction. The seat 300 is prevented from tilting or shaking in an unnecessary direction. Meanwhile, the design of the coaming part 120 can simplify the structure of the chair and improve the manufacturing efficiency.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., 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 embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A synchronized stable lifting chair, comprising:

a base;

a backrest movably mounted to one side of the base, the backrest having a first storage position and a second raised position on a movement locus of the backrest, wherein the backrest encloses one side of the base when the backrest is in the first storage position; when the backrest is in the second raised position, the backrest is away from the base;

the seat body is movably arranged above the backrest, and is provided with a third storage position and a fourth descending position on the moving track of the seat body, wherein when the seat body is positioned at the third storage position, the seat body is enclosed on one side of the base; when the seat body is positioned at the fourth descending position, the seat body is abutted against the base; and

the lifting mechanism comprises a first lifting seat, a supporting component and a pulley module, wherein the first lifting seat is movably arranged on the base, the supporting component is connected between the first lifting seat and the seat body, the pulley module is connected between the backrest and the first lifting seat, the seat body drives the supporting component to synchronously move when the seat body moves from a third storage position to a fourth descending position, the supporting component drives the first lifting seat to lift, and the first lifting seat drives the pulley module to drag the backrest to move from the first storage position to the second lifting position.

2. The synchronized stable lifting chair of claim 1, wherein the first lifting seat comprises a fixed plate, a plurality of guide rods and a plurality of sliding blocks, wherein the fixed plate is fixedly connected to the base, the plurality of guide rods are arranged on the fixed plate at intervals, the guide rods extend from the fixed plate towards the top end direction of the seat body, the sliding blocks are slidably connected to two adjacent guide rods, and the supporting assembly and the pulley module are connected with the sliding blocks.

3. The synchronous type stable lifting chair according to claim 2, wherein the pulley module comprises a fixed pulley block, a movable pulley block and a traction piece, the lifting mechanism further comprises a stand column, the stand column is arranged on the base, the fixed pulley block is fixedly arranged on the stand column, the movable pulley block is fixedly connected to the sliding block, the traction piece is arranged between the fixed pulley block and the movable pulley block in a penetrating way at intervals, one end of the traction piece is fixedly connected with the stand column, and the other end of the traction piece is fixedly connected with the backrest.

4. The synchronized stable lifting chair of claim 3, wherein the movable pulley block comprises a first movable pulley and a second movable pulley, the fixed pulley block comprises a first fixed pulley and a second fixed pulley, the first movable pulley and the second movable pulley are connected with the sliding block in parallel and spaced rotation, the first fixed pulley is arranged at one end of the upright post far away from the base, the second fixed pulley is arranged at the middle part of the upright post, and the traction piece sequentially passes through the first movable pulley, the first fixed pulley, the second movable pulley and the second fixed pulley.

5. The synchronized stable lifting chair of claim 4, wherein the first lifting seat further comprises a limiting plate, wherein the limiting plate is connected to one end of two adjacent guide rods away from the connecting bottom and is located between the second fixed pulley and the movable pulley block.

6. The synchronized smooth and steady elevating chair of claim 2, wherein said support assembly comprises a first support plate and a second support plate, said first support plate and said second support plate being spaced between said slider and an inner wall surface of a top end of said seat.

7. The synchronized stable lifting chair of any one of claims 1-6, further comprising a second lifting seat comprising a connecting plate, a plurality of guide posts, and a movable sleeve, wherein the connecting plate and the guide posts extend along the movement direction of the backrest, the guide posts are disposed on the connecting plate at intervals, the movable sleeve is sleeved on at least two of the guide posts, a side of the movable sleeve facing away from the seat is fixedly connected with the backrest, and a side of the movable sleeve facing away from the seat is connected with one end of the pulley module.

8. The synchronized stable lifting chair of claim 7, wherein the second lifting seat further comprises a first stop collar and a second stop collar, the first stop collar being disposed at an end of the guide post remote from the base and fixedly connected to the connecting plate; the second limiting sleeve is arranged at one end, close to the base, of the guide post and is fixedly connected with the connecting plate, and the first limiting sleeve and the second limiting sleeve are used for limiting the moving distance of the moving sleeve.

9. The synchronous type stable lifting chair according to claim 8, wherein the seat body is provided with a mounting cavity, a connecting port is arranged on one side, close to the backrest, of the seat body, the second lifting seat is arranged in the mounting cavity, and the movable sleeve extends out of the mounting cavity from the connecting port to be connected with the backrest.

10. The synchronized smooth and steady elevating chair of claim 9, wherein the base has an opening toward one side of the base, the opening being connected with the mounting cavity, the base having a mounting groove, the base further comprising a collar portion Zhou Sheyu mounting groove on an outer peripheral side thereof and extending toward a top end of the base, the collar portion cooperating with the opening to limit a circumference of the base.