CN220458953U - Lifting device and seat unit - Google Patents

Abstract

The utility model provides a lifting device and a seat unit, wherein the lifting device comprises: the two lifting bases are arranged in a mirror image mode and are linked; a driving unit configured to drive the lifting base to switch the lifting base between an extended posture or a storage posture, the lifting base including a top plate; a bottom plate; the lifting mechanism is adjustably arranged between the top plate and the bottom plate and is respectively and pivotally connected to the top plate and the bottom plate; when the lifting base is switched from the storage posture to the extending posture, the top plate moves towards the bottom plate along the first direction, and when the lifting base is switched from the storage posture to the extending posture, the top plate moves away from the bottom plate along the second direction, and the first direction is parallel and opposite to the second direction. When the storage posture is switched to the stretching posture, the top plate can be far away from or close to the bottom plate along a single direction, and the occupied space of the adjusting mechanism or the device is small.

Description

Lifting device and seat unit

Technical Field

The utility model relates to the technical field of seat supports, in particular to a lifting device and a seat unit.

Background

The common functional seat uses telescopic parts such as an air cylinder and the like as supporting and driving elements when the height is adjusted, the structure is simple, the adjustment feedback is rapid, but the junction of the telescopic parts can determine that the contact area between the telescopic parts and the seat main body is small, namely the strength of the connecting structure between the telescopic parts is not high enough, meanwhile, when the functional seat is used by a user, the functional seat is generally in a sitting posture state and can be adjusted in height, and other functional seats such as the lying posture state have poor stability, easy tipping phenomenon and poor safety when the height is adjusted through the telescopic parts;

in order to overcome the above-mentioned drawbacks, a driving device with high stability has been developed in the prior art, for example, an old man chair driving device with stable lifting function disclosed in chinese patent publication No. CN213640251U, which includes a base frame, a driving mechanism and a lifting mechanism; the driving mechanism comprises a driving connecting piece and a driving rod, the driving connecting piece is arranged in the middle of the driving rod, and the driving connecting piece is used for being in driving connection with the driving source; the lifting mechanism comprises lifting frames, lifting frame connecting pieces, lifting assemblies and lifting assembly connecting plates, one ends of the lifting frame connecting pieces are connected with the connecting driving rods, the other ends of the lifting frame connecting pieces are rotationally connected with the lifting assembly connecting plates, two lifting frame connecting pieces are arranged, and the two lifting frame connecting pieces are symmetrically arranged on two sides of the driving connecting pieces; the lifting assembly connecting plate is connected with the lifting frame and the lifting assembly; the driving rod and the lifting frame are connected through the lifting frame connecting pieces symmetrically arranged on two sides of the driving connecting piece, so that connection stress points between the driving rod and the lifting frame are symmetrically distributed on two sides of the driving force stress point, and the lifting frame is more stable and difficult to shake in the lifting process. However, the senior citizen chair support (seat support) driven or lifted by the driving device can translate in the front and rear directions while adjusting the height in the longitudinal direction, and is not applicable to seats which do not need to translate in the front and rear directions.

Disclosure of Invention

In view of the shortcomings of the prior art, the utility model aims to provide a lifting device, wherein when the storage posture is switched to the stretching posture, the top plate can be far away from or close to the bottom plate along a single direction, and the occupied space of an adjusting mechanism or the device is small.

Another object of the present utility model is to provide a seat unit that can achieve stable posture adjustment and is widely applicable to users.

The embodiment of the utility model is realized by the following technical scheme:

a lifting device, comprising: the two lifting bases are arranged in a mirror image mode and are linked; a driving unit configured to drive a lifting base to switch the lifting base between an extended posture or a storage posture, the lifting base including a top plate; a bottom plate; the lifting mechanism is adjustably arranged between the top plate and the bottom plate and is respectively and pivotally connected to the top plate and the bottom plate; when the lifting base is switched from the extending posture to the accommodating posture, the top plate moves towards the bottom plate along a first direction, and when the lifting base is switched from the accommodating posture to the extending posture, the top plate moves away from the bottom plate along a second direction, and the first direction is parallel and opposite to the second direction; the height difference between the top plate when the lifting base is in the stretching posture and the top plate when the lifting base is in the storing posture is 30mm-200mm.

According to a preferred embodiment, the lifting mechanism comprises two support structures comprising a first link plate and a second link plate pivotally connected to each other; the first link plate of one of the support structures is pivotally connected to the top plate, the second link plate is pivotally connected to the bottom plate, the second link plate of the other support structure is pivotally connected to the top plate, and the first link plate is pivotally connected to the bottom plate.

According to a preferred embodiment, the first and second link plates pivotally connected to the top plate are each in frictional abutment near an end of the top plate; and the ends of the first connecting plate and the second connecting plate which are pivotally connected to the bottom plate are in friction abutting connection with each other near the bottom plate.

According to a preferred embodiment, the driving unit is a telescopic member, and the telescopic member is disposed between two first connecting plates or two second connecting plates disposed opposite to each other of the lifting mechanism; or the telescopic piece is arranged between the first connecting plate and the second connecting plate which are adjacently arranged on the lifting mechanism.

According to a preferred embodiment, extension plates are arranged on the first connecting plate and the second connecting plate connected with the telescopic piece, the extension plates of the first connecting plate are used for assembling a first driving beam, and the extension plates of the second connecting plate are used for assembling a second driving beam; the telescopic piece is connected to the first connecting plate through the first driving beam and connected to the second connecting plate through the second driving beam.

In accordance with a preferred embodiment of the present utility model,

the first driving beam and the second driving beam are respectively provided with a fork frame, and the telescopic piece is pivotally connected with the first driving beam and the second driving beam through the fork frames;

the fork frame connected with the telescopic end of the telescopic member extends towards the fixed end side of the telescopic member, and the fork frame connected with the fixed end of the telescopic member extends towards the telescopic end side of the telescopic member.

According to a preferred embodiment, the top plate comprises a base plate and a mounting plate connected to each other, the mounting plate being arranged at a side of the lifting mechanism remote from the drive unit.

According to a preferred embodiment, the lifting device further comprises a connection plate, one end of which is connected to the top plate of one of the lifting bases, and the other end of which is connected to the top plate of the other lifting base.

According to a preferred embodiment, the lifting device further comprises a chassis structure on which the seat rail is arranged, the floor being mounted to the seat rail.

A seat unit comprising a mechanical stretching device and the lifting device; the mechanical stretching device is arranged on the top plate.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

when the lifting device provided by the utility model is switched from the storage posture to the stretching posture, the top plate can be far away from or close to the bottom plate along a single direction, so that the stable adjustment (longitudinal adjustment) of the adjusted mechanism or device in the single direction is realized, and the occupied space of the adjusted mechanism or device after being assembled to the lifting base is small.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a lifting device in an extended posture according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 with the single-sided lifting base removed;

fig. 3 is a schematic perspective view of a lifting device in a storage posture according to an embodiment of the present utility model;

fig. 4 is a schematic front view of a lifting base in an extended posture according to an embodiment of the present utility model;

fig. 5 is a schematic front view of a lifting base in a storage posture according to an embodiment of the present utility model;

fig. 6 is a schematic structural view of a top plate in an extreme position according to an embodiment of the present utility model;

fig. 7 is a schematic perspective view of a seat unit according to an embodiment of the utility model.

Icon: 100. a chassis structure; 200. lifting a base; 210. a first drive beam; 220. a second drive beam; 230. a driving unit; 240. a top plate; 241. a substrate; 242. a mounting plate; 250. a lifting mechanism; 251. a support structure; 2511. a first connecting plate; 2512. a second connecting plate; 254. an extension plate; 260. a connecting plate; 270. a bottom plate; 280. a fork; 290. a seat beam; 300. a mechanical stretching device; x, a first direction; y, second direction; a. a first tooth; b. and a second tooth.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify 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 present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 to 7, a lifting device includes a driving unit 230 and two lifting bases 200 disposed in mirror image, wherein the two lifting bases 200 are linked; the driving unit 230 is configured to drive the elevating base 200 to switch the elevating base 200 between the extended posture or the storage posture. Specifically, the lifting base 200 includes a top plate 240, a bottom plate 270, and a lifting mechanism 250, wherein the lifting mechanism 250 is adjustably disposed between the top plate 240 and the bottom plate 270, and is pivotally connected to the top plate 240 and the bottom plate 270, respectively; when the lifting base 200 is switched from the extended posture to the storage posture, the top plate 240 moves toward the bottom plate 270 along the first direction X, and when the lifting base 200 is switched from the storage posture to the extended posture, the top plate 240 moves away from the bottom plate 270 along the second direction Y, the first direction X being parallel and opposite to the second direction Y; the difference in height between the top plate 240 when the elevating base 200 is in the extended posture and the top plate 240 when the elevating base 200 is in the storage posture is D, d=30 mm to 200mm. In this embodiment, preferably, d=120 mm.

The lifting base 200 provided in this embodiment cooperates with the lifting mechanism 250 through the driving unit 230 to adjust the relative distance between the top plate 240 and the bottom plate 270, thereby realizing the lifting function of the lifting base 200, and thus realizing the lifting or adjusting the spatial position height of the adjusted mechanism or device assembled on the top plate 240.

For convenience of description, the lifting device is described in this embodiment as being assembled to be adjusted in the longitudinal direction, that is, the first direction X is downward in the longitudinal direction, and the second direction Y is upward in the longitudinal direction. It should be noted that, in the present embodiment, when the lifting device is in the extended posture, the lifting base 200 is correspondingly in the extended posture; similarly, when the lifting device is in the storage posture, the lifting base 200 is correspondingly in the storage posture.

As shown in fig. 3, when the elevating base 200 is in the extended posture, the longitudinal distance between the top plate 240 and the bottom plate 270 is maximized, and at this time, the adjusted mechanism or device is adjusted to the highest position; as shown in fig. 5, when the elevating base 200 is in the storage posture, the longitudinal distance between the top plate 240 and the bottom plate 270 is minimized, and at this time, the adjustment mechanism or device is adjusted to the lowest position. In use, the regulated mechanism or device is mounted to the top plate 240. In this embodiment, the distance between the top plate 240 and the bottom plate 270 is the maximum distance between the side of the top plate 240 away from the bottom plate 270 and the side of the bottom plate 270 away from the top plate 240. The top plate 240 in this embodiment can be longitudinally far from or near to the bottom plate 270 to achieve stable adjustment (longitudinal adjustment) in a single direction of the mechanism or device to be adjusted, which occupies little space in other directions (front and rear directions) than the adjustment direction after assembly.

In the present embodiment, the elevating mechanism 250 includes two support structures 251, the support structures 251 including a first link plate 2511 and a second link plate 2512 pivotally connected to each other; the first link 2511 of one of the support structures 251 is pivotally connected to the top plate 240, the second link 2512 is pivotally connected to the bottom plate 270, the second link 2512 of the other support structure 251 is pivotally connected to the top plate 240, and the first link 2511 is pivotally connected to the bottom plate 270. Further, the ends of the first and second link plates 2511 and 2512 pivotally connected to the top plate 240, respectively, near the top plate 240 are in frictional abutment; and the ends of the first and second link plates 2511 and 2512 pivotally connected to the base plate 270, respectively, near the base plate 270 are in frictional abutment. In use, the driving unit 230 may act on any one of the first connection plate 2511, the second connection plate 2512, and the top plate 240 to achieve posture adjustment of the elevation base 200. The first and second connection plates 2511 and 2512 in frictional abutment ensure structural stability of the lifting base 200, and can effectively prevent the lifting device from tilting or skewing the top plate 240 during the posture adjustment.

Specifically, the first and second connection plates 2511 and 2512 are respectively provided with first and second teeth a and b, and the first and second connection plates 2511 and 2512 pivotally connected to the top plate 240 are simultaneously engaged with each other by the first and second teeth a and b, and accordingly, the first and second connection plates 2511 and 2512 pivotally connected to the bottom plate 270 are simultaneously engaged with each other by the first and second teeth a and b. The first tooth a and the second tooth b cooperate to ensure that the top plate 240 is not skewed when the lifting base 200 is adjusted in posture.

In other embodiments, the first connection plate 2511 and the second connection plate 2512 are correspondingly provided with a first friction surface (not shown in the figure) and a second friction surface (not shown in the figure), wherein the first friction surface and the second friction surface are two circular arc surfaces which are attached to each other, and in use, when the first connection plate 2511 and the second connection plate 2512 rotate around the top plate 240 and the bottom plate 270, the first friction surface and the second friction surface are always in line contact. In order to further improve the friction force between the first friction surface and the second friction surface, elastic rubber gaskets may be respectively disposed on the working surfaces of the first friction surface and the second friction surface, so that the assembled first friction surface and the assembled second friction surface are pressed and deformed, and surface contact is always maintained, so that the top plate 240 is effectively prevented from being skewed due to relative sliding between the first friction surface and the second friction surface, and the structural stability of the lifting base 200 in the posture switching process is increased.

In other embodiments, the lifting mechanism 250 may also be a scissor structure or other type of lifting mechanism 250 with two links hinged to each other, so as to enable the top plate 240 to be adjusted in a single direction relative to the bottom plate 270.

In this embodiment, the driving unit 230 is a telescopic member, and the telescopic member is disposed between two first connection plates 2511 or two second connection plates 2512 disposed opposite to each other of the lifting mechanism 250; or the expansion member is disposed between the adjacently disposed first and second connection plates 2511 and 2512 of the elevating mechanism 250.

Further, extension plates 254 are provided on both the first connection plate 2511 and the second connection plate 2512 connected to the expansion member, the extension plate 254 of the first connection plate 2511 is used for assembling the first driving beam 210, and the extension plate 254 of the second connection plate 2512 is used for assembling the second driving beam 220; the telescopic member is connected to the first connection plate 2511 through a first driving beam 210 and to the second connection plate 2512 through a second driving beam 220.

In this embodiment, as shown in fig. 1 to 3, it is preferable that the telescopic member is disposed between the first link 2511 and the second link 2512 pivotally connected to the base plate 270. Specifically, the first and second connection plates 2511 and 2512 pivotally connected to the bottom plate 270 are each provided with an extension plate 254, the extension plate 254 of the first connection plate 2511 being used to mount the first driving beam 210, the extension plate 254 of the second connection plate 2512 being used to mount the second driving beam 220; the telescoping end of the telescoping member is pivotally connected to one of the first drive beam 210 and the second drive beam 220, and the fixed end of the telescoping member is pivotally connected to the other of the first drive beam 210 and the second drive beam 220. The first drive beam 210 and the second drive beam 220 are used to link two lift bases 200 in a mirror image arrangement. The telescopic member is preferably a telescopic motor. In use, the fixed end of the telescopic motor is mounted to the second drive beam 220 and the telescopic end is mounted to the first drive beam 210.

Further, the first driving beam 210 and the second driving beam 220 are provided with a fork 280, and the telescopic piece is pivotally connected with the first driving beam 210 and the second driving beam 220 through the fork 280; the yoke 280 connected to the telescopic end of the telescopic member extends toward the fixed end side of the telescopic member, and the yoke 280 connected to the fixed end of the telescopic member extends toward the telescopic end side of the telescopic member. As shown in fig. 1 to 3, the fork frames 280 on the first driving beam 210 and the second driving beam 220 are arranged in a substantially opposite manner, and the opposite fork frames 280 can reduce the driving length or the assembling length of the telescopic member between the first driving beam 210 and the second driving beam 220, which is beneficial to improving the structural rigidity of the telescopic member or the driving unit 230 and improving the safety of the lifting device.

In this embodiment, the top plate 240 includes a base plate 241 and a mounting plate 242 connected to each other, and the mounting plate 242 is disposed at a side of the elevating mechanism 250 remote from the driving unit 230. So configured, the mechanism or device to be adjusted can be conveniently assembled with the top plate 240.

In this embodiment, the lifting device further includes a connection plate 260, one end of the connection plate 260 is connected to the top plate 240 of one of the lifting bases 200, and the other end of the connection plate 260 is connected to the top plate 240 of the other lifting base 200. The connection plate 260 can serve as a linkage mirror image of the two lifting bases 200, and can serve as a shielding protection for the underlying structure.

In this embodiment, the lifting device further includes a chassis structure 100, a seat beam 290 is disposed on the chassis structure 100, and the bottom plate 270 is mounted to the seat beam 290. As shown in fig. 1 and 2, two seat beams 290 are disposed on the chassis and parallel to each other, wherein one lifting base 200 is disposed at one end of the seat beam 290, and the other lifting base 200 is disposed at the other end of the seat beam 290. The bottom plate 270 spans the two seat rails 290 and is bolted thereto.

As shown in fig. 7, there is also provided a seat unit including a mechanical stretching device 300 and the above-mentioned lifting device; the mechanical stretcher 300 is disposed on the top plate 240. Specifically, the mechanical stretcher 300 is provided to the mounting plate 242. The mechanical stretcher 300 here acts as the previously described adjusted mechanism or device. It should be noted that, the mechanical stretching device 300 may be any mechanical stretching device 300 that is currently used in a functional seat or a functional sofa, provided that the mechanical stretching device does not interfere with the space. The seat unit can realize stable longitudinal posture adjustment so as to meet the use requirements of users with different body types. Of course, the lifting device is not limited to the seat unit, and can be applied to other scenes with the same lifting adjustment requirement.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A lifting device, comprising:

the two lifting bases (200) are arranged in a mirror image mode, and the two lifting bases (200) are linked;

a driving unit (230) configured to drive the elevating base (200) to switch the elevating base (200) between an extended posture or a housed posture, the elevating base (200) including,

a top plate (240);

a bottom plate (270);

a lifting mechanism (250) adjustably disposed between the top plate (240) and the bottom plate (270) and pivotally connected to the top plate (240) and the bottom plate (270), respectively;

when the lifting base (200) is switched from the extending posture to the storing posture, the top plate (240) moves towards the bottom plate (270) along a first direction (X), and when the lifting base (200) is switched from the storing posture to the extending posture, the top plate (240) moves away from the bottom plate (270) along a second direction (Y), and the first direction (X) is parallel and opposite to the second direction (Y);

the difference in height between the top plate (240) when the lifting base (200) is in the extended position and the top plate (240) when the lifting base (200) is in the storage position is 30mm to 200mm.

2. The lifting device according to claim 1, characterized in that the lifting mechanism (250) comprises two support structures (251), the support structures (251) comprising a first link plate (2511) and a second link plate (2512) pivotally connected to each other;

the first link plate (2511) of one of the support structures (251) is pivotally connected to the top plate (240), the second link plate (2512) is pivotally connected to the bottom plate (270), the second link plate (2512) of the other support structure (251) is pivotally connected to the top plate (240), and the first link plate (2511) is pivotally connected to the bottom plate (270).

3. The lifting device of claim 2, wherein the first link plate (2511) and the second link plate (2512) pivotally connected to the top plate (240) each frictionally abut near an end of the top plate (240); and the first link plate (2511) and the second link plate (2512) pivotally connected to the base plate (270) are each in frictional abutment near an end of the base plate (270).

4. The lifting device according to claim 2, characterized in that the drive unit (230) is a telescopic member arranged between two of the first connection plates (2511) or two of the second connection plates (2512) arranged opposite to each other of the lifting mechanism (250); or alternatively

The telescopic piece is arranged between the first connecting plate (2511) and the second connecting plate (2512) which are adjacently arranged on the lifting mechanism (250).

5. The lifting device according to claim 4, wherein an extension plate (254) is provided on each of the first connection plate (2511) and the second connection plate (2512) connected to the telescopic member, the extension plate (254) of the first connection plate (2511) is used for assembling a first driving beam (210), and the extension plate (254) of the second connection plate (2512) is used for assembling a second driving beam (220);

the telescopic member is connected to the first connection plate (2511) through the first driving beam (210), and is connected to the second connection plate (2512) through a second driving beam (220).

6. The lifting device according to claim 5, wherein a fork (280) is arranged on each of the first drive beam (210) and the second drive beam (220), and the telescopic member is pivotally connected with the first drive beam (210) and the second drive beam (220) through the fork (280);

the fork (280) connected to the telescopic end of the telescopic member extends toward the fixed end side of the telescopic member, and the fork (280) connected to the fixed end of the telescopic member extends toward the telescopic end side of the telescopic member.

7. Lifting device according to claim 1, characterized in that the top plate (240) comprises a base plate (241) and a mounting plate (242) connected to each other, the mounting plate (242) being arranged at a side of the lifting mechanism (250) remote from the drive unit (230).

8. The lifting device according to claim 1, further comprising a connection plate (260), one end of the connection plate (260) being connected to the top plate (240) of one of the lifting bases (200), the other end of the connection plate (260) being connected to the top plate (240) of the other lifting base (200).

9. The lifting device according to claim 1, further comprising a chassis structure (100), wherein a seat beam (290) is provided on the chassis structure (100), and wherein the floor (270) is mounted to the seat beam (290).

10. A seating unit comprising a mechanical stretching means (300) and a lifting device according to any one of claims 1-9;

the mechanical stretching device (300) is arranged on the top plate (240).