CN220458963U - Seat support and seat unit - Google Patents

Abstract

The utility model provides a seat support and a seat unit, wherein the seat support comprises a driving piece and two mechanical stretching devices which are arranged in a mirror image mode and are in linkage, and the mechanical stretching devices comprise: the seat assembly comprises a seat frame and a seat frame, and the seat frame is arranged on the seat frame and can slide relative to the seat frame; the backrest assembly is configured to be pivotally connected with the seat frame and the seat frame at the same time, when the seat frame slides relative to the seat frame, a pivot point between the backrest assembly and the seat frame can move along with the seat frame, and the highest point of the backrest assembly can have a movement trend along with the movement of the seat frame in the horizontal direction; the highest point of the back rest assembly has a tendency to move closer to the ground in the longitudinal direction when the seat frame slides forward relative to the seat frame; the highest point of the back assembly has a tendency to move longitudinally away from the ground as the seat frame slides rearward relative to the seat frame. The backrest component is integrally characterized in that the lower end of the backrest component is obviously forward moving and is inclined backward in the forward moving process, so that the occupied space behind the backrest component can be reduced.

Description

Seat support and seat unit

Technical Field

The utility model relates to the technical field of seats, in particular to a seat support and a seat unit.

Background

The seat units such as the functional sofa and the functional seat can be used for adjusting the posture so as to meet the multi-scene relaxation requirement of a user. The main structure of the chair is a seat support, and the relative movement of legs, seat parts, backrest parts and the like which are attached to corresponding parts on the seat support is realized through the posture adjustment of the seat support so as to present a sitting posture, a TV posture, a lying posture and the like, wherein the sitting posture is represented as a furled state, the lying posture is represented as an extended state, and the TV posture is between the furled state and the extended state. Conventionally, when the seat unit is switched between the TV posture and the lying posture, the backrest portion assumes a reclined shape, and when the conventional seat support is adjusted at this step, the backrest is moved rearward by a large distance, so that when the backrest is placed toward the wall, a large adjustment space needs to be left between the wall and the backrest portion of the seat unit, and the use is inconvenient.

Disclosure of Invention

In view of the shortcomings of the prior art, a first object of the present utility model is to provide a seat support, in which the backrest assembly has a distinct tendency to move forward and tilt backward as a whole during forward movement in the forward and backward directions, so that the space occupation of the backrest assembly for the rear thereof can be reduced.

Another object of the present utility model is to provide a seat unit that requires little space behind the back during recline adjustment of the back.

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

a seat support comprising a drive member and two mirror-image arranged and linked mechanical extension devices, wherein the mechanical extension devices comprise: the seat assembly comprises a seat frame and a seat frame, and the seat frame is arranged on the seat frame and can slide relative to the seat frame; a leg assembly adjustably pivotally connected to the mount; a back assembly configured to be pivotally connected to both the seat frame and the seat frame, and a pivot point between the back assembly and the seat frame being capable of following movement of the seat frame when the seat frame slides relative to the seat frame, a highest point of the back assembly being capable of having a movement tendency to follow movement of the seat frame in a horizontal direction; the highest point of the back rest assembly has a tendency to move closer to the ground in the longitudinal direction when the seat frame slides forward relative to the seat frame; the highest point of the back rest assembly has a tendency to move away from the ground in the longitudinal direction when the seat frame slides rearward relative to the seat frame; the driving member includes: the first driving unit is arranged on the seat frame and used for driving the leg assembly to adjust the posture; the second driving unit is arranged on the seat frame and used for driving the seat frame to slide relative to the seat frame.

The motion trend expressed by the highest point of the backrest component ensures that the backrest part formed by taking the backrest component as a main body integrally shows an obvious forward moving trend and backward tilting trend of the lower end in the front and back directions in the process of adjusting the posture of the seat unit formed by the seat support, particularly in the process of switching the posture of a TV (television) into the posture of a lying posture, so that the space requirement of the seat unit behind the backrest part is low in the process of installing the seat unit, namely the space occupation rate of the seat unit behind the backrest part in the process of adjusting the posture is small. In the in-service use process, when the backrest part is placed towards the wall surface, the seat unit can be placed closer to the wall surface without affecting the posture adjustment of the seat unit, and the space is saved.

According to a preferred embodiment, the pivot point between the back assembly and the seat frame has a tendency to move forward as the seat frame slides forward relative to the seat frame that is greater than the tendency of the highest point of the back assembly to move forward.

According to a preferred embodiment, the backrest assembly comprises a driving rod, a first driven rod, a second driven rod and a backrest mounting rod, wherein: the lower end of the first driven rod and the lower end of the second driven rod are respectively and pivotally connected to the seat frame, and the upper end of the first driven rod and the upper end of the second driven rod are respectively and pivotally connected to the backrest mounting rod; the lower end of the driving rod is pivotally connected to the seat frame, and the upper end of the driving rod is pivotally connected to any one of the first driven rod, the second driven rod or the backrest mounting rod; a back plate attached to the back mounting bar; when the seat frame slides relative to the seat frame, a pivot point between the lower end of the driving rod and the seat frame can move along with the seat frame.

According to a preferred embodiment, the backrest mounting bar comprises a follower portion and an attachment portion connected in a bent manner, the first and second follower bars being respectively pivotally connected to the follower portion, the backrest plate being attached to the attachment portion.

According to a preferred embodiment, the active lever comprises a front end lever and a rear end lever connected to each other, wherein: the front end rod is connected to the seat frame, and the rear end rod is connected to the first driven rod; the extending direction of the front end rod and the extending direction of the rear end rod are arranged at an included angle, so that the driving rod is V-shaped and the opening of the driving rod faces upwards.

According to a preferred embodiment, the front end lever comprises a first connecting portion and a first extending portion arranged in a bent manner; the rear end rod comprises a second connecting part and a second extending part which are bent and arranged; the first extension part is connected to the second extension part, the first connection part is connected to a seat frame, and the second connection part is connected to the first driven rod; the first connecting portion is disposed closer to the mount than the first extending portion; the second connecting portion is disposed closer to the first driven lever than the second extending portion.

According to a preferred embodiment, the front end bar and the rear end bar are integrally formed.

According to a preferred embodiment, the seat support further comprises a stop extending at least partially between the first and second follower bars; when the seat unit is in the sitting posture and the TV posture, the first follower lever abuts against the stopper; when the seat unit is in the lying posture, the second driven rod abuts against the limiting piece.

A seat unit comprises the seat bracket. The requirement on the space behind the backrest part in the backrest part backward tilting adjustment process is small, and the arrangement and the use of the seat unit are facilitated.

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 seat support according to an embodiment of the present utility model in a sitting posture;

fig. 2 is a schematic perspective view of a seat support according to an embodiment of the present utility model in a TV pose;

fig. 3 is a schematic perspective view of a seat support according to an embodiment of the present utility model in a lying posture;

fig. 4 is a schematic view of a first perspective structure of a mechanical stretching device according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a second perspective structure of a mechanical stretching device according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a second driving unit according to an embodiment of the present utility model for driving a seat frame to slide relative to a seat frame;

fig. 7 is a schematic perspective view of an active rod according to an embodiment of the present utility model.

Icon: 100. a mechanical stretching device; 200. a driving member; 201. a first driving unit; 202. a second driving unit; 1. a leg assembly; 2. a seat assembly; 21. a mounting; 22. a seat frame; 231. a first frame beam; 232. a second frame beam; 24. a seat plate; 241. a limiting piece; 3. a backrest assembly; 31. a driving rod; 311. a front end lever; 3111. a first connection portion; 3112. a first extension; 312. a rear end lever; 3121. a second connecting portion; 3122. a second extension; 32. a first driven lever; 33. a second driven lever; 34. a backrest mounting bar; 341. a follower; 342. an attachment portion; 4. a drive beam; 5. a fixed beam; 6. a backboard; 7. a first fork; 8. and a second fork.

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 seat support includes a driving member 200 and two mirror-image mechanical stretching devices 100, wherein the mechanical stretching devices 100 are connected with a seat assembly 2 of a seat part, a leg assembly 1 of a footstool and a backrest assembly 3 of a backrest plate 6, the seat assembly 2 includes a seat frame 22 and a seat frame 21, and the seat frame 21 is disposed on the seat frame 22 and can slide relative to the seat frame 22; the leg assembly 1 is adjustably pivotally connected to the mount 21; the backrest assembly 3 is configured to be pivotally connected to both the seat frame 21 and the seat frame 22, and when the seat frame 21 slides relative to the seat frame 22, the pivot point between the backrest assembly 3 and the seat frame 21 can move with the seat frame 21, and the highest point of the backrest assembly 3 can have a movement tendency to move with the seat frame 21 in the horizontal direction; the highest point of the backrest assembly 3 has a tendency to move close to the ground in the longitudinal direction when the seat frame 21 slides forward relative to the seat frame 22; the highest point of the backrest assembly 3 has a tendency to move away from the ground in the longitudinal direction when the seat frame 21 slides rearward relative to the seat frame 22.

It should be noted that, when the seat frame 21 slides forward relative to the seat frame 22, the tendency of the highest point of the backrest module 3 to move in the longitudinal direction toward the ground (downward movement) and to move forward in the horizontal direction does not preclude temporary or slight rearward movement of the highest point of the backrest panel 6 or the backrest module 3 during this process. That is, the highest point of the backrest module 3 herein is a downward and forward movement tendency as a whole that is exhibited during the forward sliding of the seat frame 21 relative to the seat frame 22. The motion trend represented by the highest point of the backrest plate 6 or the backrest assembly 3 enables the backrest part formed by the backrest assembly 3 attached to the backrest plate 6 to integrally represent the lower end forward trend to be obvious and backward inclined in the front and back directions in the process of adjusting the posture of the seat unit formed by the seat support, particularly in the process of switching the posture of a TV (television) into the posture of a lying posture, so that the space requirement of the seat unit behind the backrest part is low in the process of installing the seat unit, namely the space occupation rate of the seat unit behind the backrest part is small in the process of adjusting the posture. In the in-service use process, when the backrest part is placed towards the wall surface, the seat unit can be placed closer to the wall surface without affecting the posture adjustment of the seat unit, and the space is saved.

Further, the driving member 200 includes a first driving unit 201 and a second driving unit 202, wherein the first driving unit 201 is disposed on the seat frame 21 and is used for driving the leg assembly 1 to perform posture adjustment; the second driving unit 202 is disposed on the seat frame 22, and is used for driving the seat frame 21 to slide relative to the seat frame 22. Here, the first driving unit 201 and the second driving unit 202 may each be a linear actuator. The first driving unit 201 and the second driving unit 202 operate independently for driving the seat support to achieve posture adjustment. Specifically, as shown in fig. 1 to 3, the first driving unit 201 drives the leg assembly 1 to extend forward so that the seat support is switched from the sitting posture as shown in fig. 1 to the TV posture as shown in fig. 2, and further, the second driving unit 202 drives the seat frame 21 to slide forward with respect to the seat frame 22 so that the seat support is switched from the TV posture as shown in fig. 2 to the lying posture as shown in fig. 3.

In this embodiment, as shown in fig. 1 to 6, the two mechanical stretching devices 100 disposed in a mirror image are linked, specifically, the seat support further includes a driving beam 4, a fixed beam 5, a first frame beam 231 and a second frame beam 232, wherein first ends of the first frame beam 231 and the second frame beam 232 are connected to the seat frame 21 of one mechanical stretching device 100, and second ends of the first frame beam 231 and the second frame beam 232 are connected to the seat frame 21 of the other mechanical stretching device 100, so as to connect the seat frames 21 of the two mechanical stretching devices 100 disposed in a mirror image as a whole, thereby realizing the linkage of the two mechanical stretching devices; one end of the driving beam 4 is connected to the leg assembly 1 of one mechanical stretcher 100, and the other end of the driving beam 4 is connected to the leg assembly 1 of the other mechanical stretcher 100, so that the leg assemblies 1 of the two mechanical stretcher 100 arranged in mirror image can be linked; the fixed beam 5 has a first end connected to the seat frame 22 of one mechanical stretcher 100 and the other end connected to the seat frame 22 of the other mechanical stretcher 100 to fixedly connect the seat frames 22 of the two mechanical stretcher 100 arranged in mirror image to improve the structural stability of the seat frame. Further, the first frame beam 231 is disposed near the leg assembly 1, and the second frame beam 232 is disposed near the backrest assembly 3.

In the present embodiment, the first driving unit 201 is installed between the second frame beam 232 and the driving beam 4, and the second driving unit 202 is installed between the second frame beam 232 and the fixed beam 5.

Further, the second frame beam 232 is provided with a first fork frame 7, the fixed beam 5 is provided with a second fork frame 8, the fixed part of the second driving unit 202 is pivotally connected to the second fork frame 8, the pivot shafts of the first and second fork frames are first shafts, the telescopic part of the second driving unit 202 is connected to the first fork frame 7, the connection points of the first and second fork frames are first connection points, and the minimum distance between the first connection points and the first shafts is smaller than the minimum distance between the second frame beam 232 and the fixed beam 5. By such arrangement, the driving length or the assembling length of the second driving unit 202 between the second frame beam 232 and the fixed beam 5 can be reduced, which is advantageous in improving the structural rigidity of the second driving unit 202 and improving the safety of the seat bracket.

In order to reduce the back-rubbing feeling of the seat support, in the present embodiment, when the seat frame 21 slides forward relative to the seat frame 22, the forward movement tendency of the pivot point between the backrest module 3 and the seat frame 21 is greater than the forward movement tendency of the highest point of the backrest module 3.

Specifically, as shown in fig. 3 and 4, the backrest assembly 3 includes a driving lever 31, a first driven lever 32, a second driven lever 33, and a backrest mounting lever 34, wherein: the lower ends of the first and second driven levers 32 and 33 are pivotally connected to the seat frame 22, respectively, and the upper ends of the first and second driven levers 32 and 33 are pivotally connected to the backrest mounting lever 34, respectively; the lower end of the driving lever 31 is pivotally connected to the seat frame 21, and the upper end of the driving lever 31 is pivotally connected to any one of the first driven lever 32, the second driven lever 33, or the backrest mounting lever 34; the backboard 6 is attached to the backrest mounting bar 34; when the mount 21 slides relative to the frame 22, the pivot point between the lower end of the drive lever 31 and the mount 21 can follow the movement of the mount 21.

Specifically, to facilitate assembly of the first and second follower bars 32, 33 with the bezel 22, in some embodiments, the bezel 24 is provided on the bezel 22, with the first and second follower bars 32, 33 being pivotally connected to the bezel 24. In the present embodiment, since the fixing beam 5 and the seat frame 22 are fixedly connected, the seat plate 24 may be provided at a position where the fixing beam 5 is close to the seat frame 22. The seat plate 24 and the seat frame 22 or the fixed beam 5 may be connected by bolts, or may be welded, and when welded, the seat plate 24 is a part of the seat frame 22 or the seat plate 24 is a part of the fixed beam 5.

The lower ends of the first follower lever 32 and the second follower lever 33 are pivotally connected to the seat plate 24, respectively, and the first follower lever 32, the seat plate 24, the second follower lever 33, and the backrest mounting lever 34 constitute a planar four-bar mechanism. Preferably, the upper end of the driving lever 31 is pivotally connected to a first driven lever 32, the first driven lever 32 being arranged on the side close to the leg assembly 1. When the mount 21 slides relative to the frame 22, the pivot point between the lower end of the drive lever 31 and the mount 21 can follow the movement of the mount 21. So configured, when the seat frame 21 slides relative to the seat frame 22, that is, when the seat unit is switched between the TV posture and the lying posture, the back plate 6 mounted on the back mounting lever 34 can achieve the back-rest reclining of the seat unit in such a manner that its lower end follows the seat frame 21 to move forward and backward while its upper end does not substantially move in the forward and backward directions (the upper end of the back plate 6 mainly exhibits movement in the upward and downward directions), reducing the back-rubbing feeling when the user uses the back rest in the process.

As shown in fig. 5, in the present embodiment, the backrest mounting bar 34 includes a follower portion 341 and an attachment portion 342 connected in a bent manner, and the first follower bar 32 and the second follower bar 33 are pivotally connected to the follower portion 341, respectively, and the backboard 6 is attached to the attachment portion 342. In the present embodiment, the attachment portion 342 is outside the follower portion 341. Further, the driving rod 31 includes a front rod 311 and a rear rod 312 connected to each other, wherein the front rod 311 is connected to the seat frame 21, the rear rod 312 is connected to the first driven rod 32, and an angle is formed between an extending direction of the front rod 311 and an extending direction of the rear rod 312, so that the driving rod 31 is V-shaped and has an upward opening.

Still further, the front end lever 311 includes a first connecting portion 3111 and a first extending portion 3112 that are provided in a bent configuration; the rear end lever 312 includes a second connection portion 3121 and a second extension portion 3122 that are provided in a bent manner, the first extension portion 3112 is connected to the second extension portion 3122, the first connection portion 3111 is connected to the seat frame 21, and the second connection portion 3121 is connected to the first driven lever 32; the first connection 3111 is disposed closer to the mount 21 than the first extension 3112; the second connection portion 3121 is disposed closer to the first driven lever 32 than the second extension portion 3122. Thereby reducing the contact area between the front end rod 311 and the seat frame 21 and reducing the possibility of interference between the front end rod 311 and the seat frame 21; at the same time, the contact area between the rear end lever 312 and the first driven lever 32 can be reduced, and the possibility of interference between the rear end lever 312 and the first driven lever 32 can be reduced.

In this embodiment, the front end lever 311 and the rear end lever 312 are preferably integrally formed.

In this embodiment, the seat frame 22 or the seat plate 24 is provided with a limiting member 241, and the limiting member 241 extends at least partially between the first driven lever 32 and the second driven lever 33. The first follower lever 32 abuts against the stopper 241 when the seat unit is in the sitting posture and the TV posture; the second follower lever 33 abuts against the stopper 241 when the seat unit is in the lying posture. The stop 241 here serves to assist in the stop of the backrest assembly 3.

The embodiment also provides a seat unit, which comprises the seat bracket. The requirement on the space behind the backrest part in the backrest part backward tilting adjustment process is small, and the arrangement and the use of the seat unit are facilitated.

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 (9)

1. A seat support is characterized by comprising a driving piece (200) and two mechanical stretching devices (100) which are arranged in a mirror image and are linked, wherein,

the mechanical stretching device (100) comprises:

the seat assembly (2) comprises a seat frame (22) and a seat frame (21), wherein the seat frame (21) is arranged on the seat frame (22) and can slide relative to the seat frame (22);

-a leg assembly (1) adjustably pivotally connected to the mount (21);

a backrest assembly (3) configured to be pivotally connected to both the seat frame (21) and the seat frame (22), and when the seat frame (21) slides relative to the seat frame (22), a pivot point between the backrest assembly (3) and the seat frame (21) can follow the movement of the seat frame (21), a highest point of the backrest assembly (3) can have a movement tendency to follow the movement of the seat frame (21) in a horizontal direction; when the seat frame (21) slides forwards relative to the seat frame (22), the highest point of the backrest assembly (3) has a movement trend close to the ground in the longitudinal direction; when the seat frame (21) slides backwards relative to the seat frame (22), the highest point of the backrest assembly (3) has a movement trend away from the ground in the longitudinal direction;

the driving member (200) includes:

a first driving unit (201) arranged on the seat frame (21) and used for driving the leg assembly (1) to adjust the posture;

and a second driving unit (202) which is arranged on the seat frame (22) and is used for driving the seat frame (21) to slide relative to the seat frame (22).

2. Seat support according to claim 1, characterized in that the forward movement of the pivot point between the backrest assembly (3) and the seat support (21) is greater than the forward movement of the highest point of the backrest assembly (3) when the seat support (21) is slid forward relative to the seat frame (22).

3. The seat support according to claim 1 or 2, wherein the backrest assembly (3) comprises a driving rod (31), a first driven rod (32), a second driven rod (33) and a backrest mounting rod (34), wherein:

the lower end of the first driven rod (32) and the lower end of the second driven rod (33) are respectively and pivotally connected to the seat frame (22), and the upper end of the first driven rod (32) and the upper end of the second driven rod (33) are respectively and pivotally connected to the backrest mounting rod (34);

the lower end of the driving rod (31) is pivotally connected to the seat frame (21), and the upper end of the driving rod (31) is pivotally connected to any one of the first driven rod (32), the second driven rod (33) or the backrest mounting rod (34);

a back board (6) is attached to the back mounting bar (34);

when the seat frame (21) slides relative to the seat frame (22), a pivot point between the lower end of the driving rod (31) and the seat frame (21) can move along with the seat frame (21).

4. A seat support according to claim 3, characterized in that the backrest mounting bar (34) comprises a follower portion (341) and an attachment portion (342) connected in a bent manner, the first follower bar (32) and the second follower bar (33) being respectively pivotally connected to the follower portion (341), the backrest plate (6) being attached to the attachment portion (342).

5. A seat support according to claim 3, wherein the active lever (31) comprises a front end lever (311) and a rear end lever (312) connected to each other, wherein:

-the front end lever (311) is connected to the seat frame (21), the rear end lever (312) being connected to the first driven lever (32);

the extending direction of the front end rod (311) and the extending direction of the rear end rod (312) are arranged at an included angle, so that the driving rod (31) is V-shaped and the opening is upward.

6. The seat bracket according to claim 5, characterized in that the front end bar (311) comprises a first connecting portion (3111) and a first extension portion (3112) arranged in a bent manner; the rear end rod (312) comprises a second connecting part (3121) and a second extending part (3122) which are arranged in a bending way;

-the first extension (3112) is connected to the second extension (3122), the first connection (3111) being connected to a mount (21), the second connection (3121) being connected to the first follower lever (32); the first connection (3111) is arranged closer to the mount (21) than the first extension (3112); the second connection portion (3121) is disposed closer to the first driven lever (32) than the second extension portion (3122).

7. The seat support according to claim 5, characterized in that the front end bar (311) and the rear end bar (312) are integrally formed.

8. A seat support according to claim 3, characterized in that the seat support further comprises a stop (241), the stop (241) extending at least partially between the first follower lever (32) and the second follower lever (33);

the first driven lever (32) abuts against the stopper (241) when the seat unit is in a sitting posture and a TV posture;

the second follower lever (33) abuts against the stopper (241) when the seat unit is in the lying posture.

9. A seating unit comprising a seat support as claimed in any one of claims 1 to 8.