CN219306332U - Movable seat unit and movable seat - Google Patents

Abstract

The utility model relates to a movable seat unit comprising a armrest side plate (1) supported on the ground; a mechanical stretching device (2) comprising a seat frame (21) for attaching a seat portion and a backrest assembly (22) provided at the rear of the seat frame (21) for attaching a backrest, wherein a rail (11) extending in the front-rear direction of the seat unit is provided on the armrest side plate (1), and the seat frame (21) is connected with the rail (11) in a sliding fit; the backrest assembly (22) comprises a backrest mounting member (221) and a guide chute member (222) fixedly mounted relative to the armrest side plate (1), wherein the lower end of the backrest mounting member (221) is pivotally connected with the rear part of the seat frame (21), and the middle part of the backrest mounting member (221) is provided with a guide pin (221 a) which can be in sliding fit with the guide chute (222 a), so that when the seat frame (21) slides forwards, the pivot point of the lower end of the backrest mounting member (221) and the rear part of the seat frame (21) moves forwards. The utility model further relates to a movable seat.

Description

Movable seat unit and movable seat

Technical Field

The utility model relates to a movable seat unit and, in addition, to a movable seat comprising the seat unit.

Background

A variety of seating units for use in a mobile seating unit are known in the art, such as sofas or seats with multiple position changing functions. Along with the improvement of the living standard of people, the comfort requirements on sofas and seats are also increasingly improved. In known designs, the movable seating units are typically provided with mechanical extension means, whereby a transition between at least two of the sitting, resting (or TV) and lying positions is enabled. When the seat unit is changed from the sitting posture state to the leisure posture state, the footstool of the seat unit extends forwards, the angle between the backrest and the seat part is basically unchanged, and when the seat unit is changed from the leisure posture state to the lying posture state, the footstool is further lifted forwards and upwards compared with the leisure posture state, and the backrest is obviously reclined. However, in the existing movable seat with the lying position, the backrest is often moved back severely due to the lying state, so that a larger space requirement is provided for furniture placement. In order to solve the technical problem, some so-called 'zero wall' schemes are also proposed, however, these product types tend to have complex structures and high manufacturing cost.

Disclosure of Invention

In view of the above, the present utility model aims to provide a movable seat with simpler structure, more flexible and convenient operation and smaller installation space.

To solve the technical problem, there is provided a movable seating unit including a pair of armrest side plates supported on the ground in parallel arrangement; a mechanical stretching device provided between the armrest side plates, the mechanical stretching device including a seat frame for attaching the seat portion and a backrest assembly provided at a rear portion of the seat frame for attaching the backrest, wherein a rail extending in a front-rear direction of the seat unit is provided on the armrest side plates, the seat frame being slidably fitted with the rail; and the electric driving unit can enable the seat frame to slide back and forth relative to the handrail side plate along the guide rail.

According to the present utility model, the backrest assembly includes a backrest mount having an upper end attached to the backrest and a lower end pivotally connected to a rear portion of the seat frame, and a guide chute member fixedly installed with respect to the armrest side plate, wherein a middle portion of the backrest mount is constructed with a guide pin slidably fitted with the guide chute such that when the seat frame slides forward, the lower end of the backrest mount moves forward with a pivot point of the rear portion of the seat frame.

According to the present utility model, preferably, when the seat frame slides forward, the highest point of the backrest has a tendency to move downward and forward. It is noted here that the downward and forward trend of the highest point of the backrest does not preclude a temporary or slight rearward shift of the highest point of the backrest.

In this embodiment, as the seat frame moves forward, the lower end of the backrest mount hinged to the seat frame moves forward, so that the angle between the backrest mount and the follower link increases, and the backrest mount moves forward with the seat frame as a whole, driving the backrest to move forward while tilting, so that the highest point of the backrest moves downward and, if necessary, also forward. Thereby reducing the excessive requirements for space for seating behind the seat.

Preferably, the seat frame comprises two seat frame longitudinal beams extending in parallel in the front-rear direction of the seat unit and at least one seat frame cross beam transversely connected between the two longitudinal beams, wherein the seat frame longitudinal beams are connected with the guide rails in a sliding fit manner.

In this embodiment, the electric drive unit includes a bezel actuator acting between the armrest side plate and the bezel.

According to this embodiment, one end of the seat frame actuator is fixedly arranged with respect to the armrest side plate, and the other end of the seat frame actuator is connected to the seat frame cross member, wherein the seat frame is urged to slide back and forth with respect to the armrest side plate by the expansion and contraction of the seat frame actuator.

According to this embodiment, the seat unit can be changed between the sitting position and the backrest reclined position.

In another embodiment, the mechanical stretcher further comprises leg stretcher pivotally connected to the front of the seat frame, a leg cross member connected between the leg stretcher, by means of which the seat unit can be moved between a sitting position, in which the backrest stands up, the leg stretcher is folded under the seat part, and a stretched position, in which the leg stretcher stretches to the front of the seat part, and in which the leg stretcher stretches to the front of the seat part, the seat frame slides forward and drives the backrest to tilt at a greater angle.

According to this embodiment, the electric drive unit comprises, in addition to the seat frame actuator, a leg actuator acting between the seat frame and the leg extension device.

Preferably, one end of the leg actuator is connected to the seat frame cross member, and the other end of the leg actuator is connected to the leg cross member, wherein the leg stretching device is caused to be stretched or contracted by the expansion and contraction of the leg actuator. In this embodiment, the electric drive unit controls the seat frame and the leg extension device independently of each other by means of two actuators, respectively, so that a more flexible position change is achieved.

In an alternative embodiment, the mechanical extension device further comprises leg extension devices pivotally connected to the front of the seat frame, a leg cross member being connected between the leg extension devices, by means of which the seat unit can be brought into a sequential change between a sitting position, in which the backrest stands up, the leg extension devices being folded under the seat part, a TV position, in which the leg extension devices extend in front of the seat part, and an extended position, in which the leg extension devices extend in front of the seat part, the seat frame slides forward and drives the backrest to tilt at a greater angle, wherein the electric drive unit is configured as a seat actuator acting between the armrest side plates and the leg extension devices.

In this embodiment, one end of the seat actuator is preferably arranged fixedly relative to the armrest side plate, and the other end of the seat actuator is connected to the leg cross member, wherein the leg extension device and the seat frame are moved one after the other by telescoping the seat actuator. In this embodiment, the electric drive unit achieves a common control of the seat frame, the backrest and the leg extension device by means of only one actuator.

Preferably, the adjustment stroke of the seat actuator is divided into two phases which are carried out in succession, in a first phase in which the leg extension device is moved relative to the seat frame and in a second phase in which the seat frame is slid relative to the armrest side plate.

In order to solve the technical problems, a movable seat is provided, which comprises the seat unit.

Drawings

Embodiments of the present utility model are described in detail below with reference to the drawings.

Fig. 1 schematically shows a schematic view of a movable seating unit according to a first embodiment of the present utility model;

fig. 2a and 2b each schematically show a partial side view of the seat unit shown in fig. 1;

fig. 3 schematically shows a partial perspective view of a movable seating unit according to a second embodiment of the present utility model;

FIG. 4 schematically illustrates a perspective view of a disassembled portion of the seating unit shown in FIG. 3;

FIG. 5 schematically illustrates another perspective view of the seating unit shown in FIG. 3;

fig. 6 schematically shows a perspective view of a third embodiment according to the utility model;

FIG. 7 schematically illustrates a partial perspective view of the seating unit shown in FIG. 6;

FIG. 8 schematically illustrates a side view of the seating unit of FIG. 6 in a seated position;

FIG. 9 schematically illustrates a side view of the seating unit TV set position shown in FIG. 6;

fig. 10 schematically illustrates a side view of the seating unit in the reclined position of fig. 6.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may include one or more of the feature, either explicitly or implicitly. Moreover, the terms "first," "second," and the like, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

Fig. 1 to 2b schematically show a movable seating unit according to a first embodiment of the present utility model. The seat unit is configured as a movable seat with a floor-standing armrest.

The seating unit comprises a pair of armrest side plates 1 arranged in parallel, on which armrest pads, not shown in the figures, are respectively mounted. The armrest side plates 1 support the seat unit on the ground, and guide rails 11 extending in the front-rear direction of the seat unit are formed on the inner side surfaces of the armrest side plates 1, and side plate cross members 12 are fixedly installed between the two armrest side plates 1 by means of anchors. Between the armrest side plates 1 there are mounted mechanical extension means 2 for changing the seating unit between different positions.

The mechanical stretching device 2 includes a seat frame 21 for attaching a seat portion, the seat frame 21 including two first and second seat frame stringers 211a, 211b extending in parallel in the front-rear direction of the seat unit, and a seat frame cross member 212 connected laterally between the first and second seat frame stringers. The first seat frame rail 211a and the second seat frame rail 211b are respectively slidably engaged with the guide rail 11 on the inner side surface of the armrest side plate, so that the seat frame 21 can slide back and forth along the guide rail 11 with respect to the armrest side plate.

The rear portion of the seat frame 21 is connected to the backrest assembly 22. The backrest assembly 22 comprises a backrest mounting 221 for attaching a backrest and a guide chute member 222 provided with a guide chute 222a, wherein the guide chute member 222 is fixedly mounted on the armrest side plate and the guide chute 222a extends in the fore-and-aft direction of the seat unit. The lower ends of the backrest mounting members 221 are hinged to the rear ends of the first and second seat frame stringers, the upper ends of the backrest mounting members 221 are attached to the backrest, and the middle of the backrest mounting members 221 is constructed with a guide pin 221a, and the guide pin 221a is slidably supported in a guide chute 222a, thereby achieving a sliding fit connection of the backrest mounting members 221 with the guide chute member 222.

In this embodiment, the electric drive unit 3 includes a bezel actuator 31 for driving the bezel 21 to slide back and forth along the rail 21 with respect to the armrest side plate 1.

The seat frame actuator 31 is configured as a linear actuator, and as shown in fig. 3, the motor head of the seat frame actuator 31 is mounted on the side plate cross member 12, and a retractable actuating lever acts on the seat frame cross member 212.

When the seat frame actuator 31 is extended, the seat frame cross member 212 is pushed to slide forward along the guide rail 11 together with the first seat frame longitudinal member 211a and the second seat frame longitudinal member 211b fixedly connected thereto. At the same time, the angle between the backrest mounting member 221 and the guide chute member 222 is reduced, and the backrest mounting member 221 moves forward along with the seat frame 21, driving the backrest to move forward while tilting, so that the highest point of the backrest moves downward. Thereby achieving a change in the seating unit between a seated position and a reclined position of the back.

In another embodiment according to the utility model shown in fig. 3 to 5, the seating unit further comprises leg extension means 23 provided at the front of the seat frame 21.

The leg extension means 23 is composed of a plurality of links pivotally connected to each other in a known manner, wherein the rear end of the first leg link 232 is hinged to the front end of the seat frame 21, the front end of the first leg link 232 is hinged to the rear end of the second leg link 233, the rear end of the third leg link 234 is hinged to the front end of the seat frame 21, the front end of the third leg link 234 is hinged to the rear end of the fourth leg link 235, the second leg link 233 and the fourth leg link 235 are hinged to the leg rest 236 at the front ends thereof, respectively, wherein a leg cross member 231 is installed between the first leg links 232.

In this embodiment, the electric drive unit 3 includes, in addition to the seat frame actuator 31, a leg actuator 32 for driving the leg stretching device 23 to stretch and retract with respect to the seat frame 21, wherein the seat frame actuator 31 and the leg actuator 32 can be operated independently of each other, so that the forward and backward sliding of the seat frame 21 and the telescoping of the leg stretching device can be performed independently of each other.

The leg actuator 32 is also configured as a linear actuator, and as shown in fig. 4, the motor head of the leg actuator 32 is mounted on the frame rail 212, and a telescopic actuation rod acts on the leg rail 231.

The backrest attached to the backrest mount 221 stands up with the seat unit in the sitting position, and the leg extension device 23 is folded under the seat frame 21. At this time, if only the leg actuator 32 is extended, the leg cross member 231 is pushed forward and the leg extension device 23 is caused to be extended, thereby achieving a transition from the sitting position to the TV position.

From the TV pose position, if the seat frame actuator 31 is extended, the seat frame cross member 212 is pushed to slide forward along the guide rail 11 together with the first seat frame rail 211a, the second seat frame rail 211b fixedly connected thereto. At the same time, the angle between the backrest mounting member 221 and the guide chute member 222 is reduced, and the backrest mounting member 221 moves forward along with the seat frame 21, driving the backrest to move forward while tilting, so that the highest point of the backrest moves downward. Thereby effecting a transition from the TV position to the recumbent position.

Of course, it is also possible to start with the sitting position with only the seat frame actuator 31 extended, thus sliding the seat frame 21 forward along the guide rail 11, with the backrest tilted, while the leg extension means 23 remain retracted under the seat frame 21.

The corresponding reversal of the position of the seat unit is effected by retraction of the actuating lever of the actuator, which is not described in detail here.

Fig. 6 to 10 schematically show a seat unit according to a third embodiment of the present utility model.

The third embodiment differs from the second embodiment in the construction of the electric drive unit 3. According to the second embodiment, the electric drive unit 3 is configured as a seat actuator 33. The seat actuator 33 is configured as a linear actuator, the motor head of which is mounted on the side plate cross member 12 of the armrest side plate 1, and a telescopic actuation lever acts on the leg cross member 231.

The adjustment stroke of the seat actuator 33 is divided into two stages which are carried out one after the other. This is explained here by taking the sequential change of the seat unit between the sitting position, the TV position and the lying position as an example in fig. 8 to 10.

In the first stage, only the leg stretching device is stretched out and drawn back with respect to the seat frame. Specifically, when the seat actuator 33 is extended, the seat frame 21 is kept unchanged in position relative to the armrest side plates 1 due to the weight of the user sitting on the seat, the backrest posture is kept unchanged, and the actuation lever pushes only the leg cross member 231 forward, thereby bringing the leg extension device 23 to be extended, and the seat unit is changed from the sitting posture position shown in fig. 8 to the TV posture position shown in fig. 9.

In the second stage, the seat frame slides back and forth relative to the armrest side plates. Specifically, when the actuation lever of the seat actuator continues to extend until the leg extension device 23 is maximally extended, the leg extension device brings the seat frame 21 forward along the guide rail 11 with respect to the armrest side panel 1. At the same time, the included angle between the backrest mounting member 221 and the guide chute member 222 is reduced, and the backrest mounting member 221 moves forward along with the seat frame 21, driving the backrest to move forward while tilting, so that the highest point of the backrest moves downward, and the seat unit is changed from the TV posture position shown in fig. 9 to the lying posture position shown in fig. 10.

In the third embodiment, alternatively, a sequence spring 25 may also be provided as shown in fig. 7. The sequence spring 25 acts between the seat frame 21 and the leg extension device 23. As shown in fig. 7, one end of the sequence spring 25 is connected to the inside of the frame rail and the other end is connected to the link of the leg extension device. The sequence spring 25 more reliably ensures the sequential conversion of the seat unit between the sitting position, the TV position, and the lying position, preventing the disturbance of the posture conversion sequence.

List of reference numerals

1. Armrest side plate

11. Guide rail

12. Side plate beam

2. Mechanical stretching device

21. Seat frame

211a first seat frame longitudinal beam

211b second seat frame longitudinal beam

212. Seat frame beam

22. Backrest assembly

221. Backrest mounting

221a guide pin

222. Guide chute piece

222a guide chute

23. Leg stretching device

231. Leg cross beam

232. First leg connecting rod

233. Second leg link

234. Third leg connecting rod

235. Fourth leg link

236. Foot rest

25. Sequential spring

3. Electric drive unit

31. Seat frame actuator

32. Leg actuator

33. A seat actuator.

Claims (12)

1. A movable seating unit, comprising:

-a pair of armrest side plates (1) supported in parallel arrangement on the ground;

-a mechanical stretching device (2) arranged between the armrest side plates (1), the mechanical stretching device (2) comprising a seat frame (21) for attaching a seat portion and a backrest assembly (22) arranged at the rear of the seat frame (21) for attaching a backrest, wherein a rail (11) extending in the fore-and-aft direction of the seat unit is arranged on the armrest side plates (1), the seat frame (21) being in sliding fit connection with the rail (11);

-an electric drive unit (3) by means of which the seat frame (21) can be slid back and forth along the guide rail (11) relative to the handrail side plate (1);

wherein the backrest assembly (22) comprises a backrest mounting member (221) and a guide chute member (222) fixedly mounted with respect to the armrest side plate (1), the guide chute member (222) being provided with a guide chute (222 a) extending in the front-rear direction of the seat unit, the upper end of the backrest mounting member (221) being attached to the backrest, the lower end of the backrest mounting member (221) being pivotally connected to the rear of the seat frame (21), wherein the middle part of the backrest mounting member (221) is configured with a guide pin (221 a) slidably fitted with the guide chute (222 a) so that when the seat frame (21) slides forward, the pivot point of the lower end of the backrest mounting member (221) and the rear of the seat frame (21) moves forward when the seat frame (21) slides forward.

2. A seating unit as claimed in claim 1, characterised in that the highest point of the backrest has a tendency to move downwards and forwards when the seat frame (21) is slid forwards.

3. The seat unit according to claim 1, characterized in that the seat frame (21) comprises two seat frame stringers (211 a, 211 b) extending in parallel in the front-rear direction of the seat unit and at least one seat frame cross beam (212) connected laterally between the two stringers, wherein the seat frame stringers (211 a, 211 b) are connected with the guide rail (11) in a sliding fit.

4. A seating unit according to claim 3, wherein the electric drive unit (3) comprises a seat frame actuator (31) acting between the armrest side plate (1) and the seat frame (21).

5. The seating unit according to claim 4, wherein one end of the seat frame actuator (31) is fixedly disposed with respect to the armrest side plate (1), and the other end of the seat frame actuator (31) is connected to the seat frame cross member (212), wherein the seat frame (21) is caused to slide back and forth with respect to the armrest side plate (1) by the expansion and contraction of the seat frame actuator (31).

6. The seating unit according to claim 4, characterized in that the mechanical stretching means (2) further comprise leg stretching means (23) pivotally connected to the front of the seat frame (21), between which leg cross members (231) are connected, by means of which electric drive unit (3) the seating unit can be caused to change between a sitting position, in which the backrest stands up, a TV position, in which the leg stretching means (23) is folded under the seat, and a stretched position, in which the leg stretching means (23) is stretched in front of the seat, and in which the leg stretching means (23) is stretched in front of the seat, the seat frame (21) being slid forward and the backrest being driven to tilt at a greater angle.

7. The seating unit according to claim 6, wherein the electric drive unit (3) further comprises a leg actuator (32) acting between the seat frame (21) and the leg extension device (23).

8. The seating unit defined in claim 7, wherein one end of the leg actuator (32) is connected to the frame cross member (212), and the other end of the leg actuator (32) is connected to the leg cross member (231), and wherein the leg extension device (23) is caused to be extended or retracted by extension or contraction of the leg actuator (32).

9. A seating unit according to claim 3, characterized in that the mechanical extension means (2) further comprise leg extension means (23) pivotally connected to the front of the seat frame (21), between which leg cross members (231) are connected, by means of which electric drive unit (3) the seating unit can be brought into sequential conversion between a sitting position in which the backrest stands up, the leg extension means (23) being folded under the seat part, a TV position in which the leg extension means (23) extends in front of the seat part, and an extended position in which the leg extension means (23) extends in front of the seat part, the seat frame (21) being slid forward and driving the backrest to tilt at a greater angle, wherein the electric drive unit (3) is configured as a seat actuator (33) acting between the armrest side plate (1) and the leg extension means (23).

10. Seating unit according to claim 9, characterized in that one end of the seat actuator (33) is arranged fixedly with respect to the armrest side plate (1), the other end of the seat actuator (33) being connected to the leg cross member (231), wherein the leg extension device (23) and the seat frame (21) are caused to move one after the other by telescoping of the seat actuator (33).

11. Seating unit according to claim 9, characterized in that the adjustment stroke of the seat actuator (33) is divided into two phases carried out successively, in a first phase the leg extension means (23) are moved relative to the seat frame (21) and in a second phase the seat frame (21) is slid relative to the armrest side plate (1).

12. A movable seat, characterized in that it comprises a seat unit according to any of the preceding claims.

Images