RU223108U1 - TRANSFORMABLE CHAIR-COUCH - Google Patents

Abstract

The utility model relates to the field of seating furniture design, namely to chairs with a transformation mechanism, and can be used for independently vertically lifting a seated user, lifting his legs and reclining the back of the chair. The technical task of the claimed utility model is to create a chair-couch, transformable with the possibility of adjusting it in height independently of the transformation and with the ability to fix any intermediate position of the backrest and footrest, as well as the lifting mechanism. The technical result of the claimed utility model is the achievement of the specified technical task. The utility model is a transformable chair-couch, equipped with two controlled drivers placed in control units, motors, the signal to which is supplied from the control panel, including a rigid frame, the parts of which are interconnected by levers, in which a closed circuit is located at the bottom of the lifting mechanism of U-shaped transverse profiles and flat longitudinal arms rigidly attached to each other, in the upper part of the lifting mechanism there is a closed circuit, the parts of the lifting mechanism are interconnected by connecting rods, to which gas lifts are attached and to the lower part of the mechanism, and the upper part, forming a rigid circuit of seats, backrests and footrest supports, wherein the backrest and footrest support move simultaneously, the backrest tilts in the direction opposite to the footrest support at an acute angle, and the footrest support moves forward and moves upward, one of the motors activates the lifting mechanism couch chairs, and the second engine drives the backrest mounting support to change the angle of its inclination and the position of the footrest support, while the engines operate independently of each other, and the lifting height of the couchette chair, as well as the position of the backrest and footrest support , can be fixed in any position between the extreme points. In utility model variants, the motors are DC electric motors; the control panel can be moved outside the main mechanism on a flexible wire; The lower and upper parts of the lifting mechanism and levers are made of carbon structural steel.

Description

Field of technology.

The utility model relates to furniture, namely to chairs with a transformation mechanism, and can be used to independently vertically lift a seated user, lift his legs and recline the back of the chair.

Prior art.

A variety of different couch chairs are known from the state of the art, equipped with transformation mechanisms, having different designs and performance characteristics. The vast majority of reclining chairs have either a folding backrest, a folding legrest, or a combination of both. Various models of so-called “recliners” are widely known, that is, chairs with reclining backs, which are equipped with various types of adjustment that allow you to change the angle of the backrest. The seat and backrest are typically hinged to each other, with the backrest being hinged to armrests on each side. In this case, the user can change the angle of the backrest by pushing the body forward and backward.

There is a known utility model RF 132692 (published on September 27, 2013), which describes a chair with a lifting table, including a base, a seat, a backrest, a table containing at least one tabletop section, a table lifting mechanism with the ability to move the table from a position above the seat to a position above back. The disadvantage of this device is the inability to adjust the height.

There is a known mechanism for raising the footrest in a folding chair (RF patent 2683972, published 04/03/2019). According to the invention, a mechanism for raising a footrest in a folding chair includes a fixed seat and an associated rotating footrest, wherein the footrest includes a base, first and second connecting elements, each of which is rigidly connected at one end to the base and hinged at the other end. connected to the seat, wherein the connecting elements have a shape, the base part of which is U-shaped, and in the area of fastening with the seat they contain an inwardly directed angular bend with an upper and lower side, in which at least one connecting element contains a hinged connection with a pusher, located in the seat, while the axis of the upper side of the corner bend forms an angle with the axis of the pusher of less than 180 degrees.

The disadvantage of this invention is the inability to control the transformation remotely and the inability to adjust the seat height.

The closest to the proposed utility model in terms of technical essence and achieved result (prototype) is a reclining chair for sleeping, disclosed in US patent US 20070257525 A1 (published on November 8, 2007).

A device is described that has a reclining mechanism and a footrest mechanism, which operate independently of each other. In this way, the reclining chair for sleeping can be moved between the closed position of the chair; open position for watching TV with reclining backrest; open with fully reclined position; and closed with a fully reclined position.

The description also discloses that the recliner mechanism is mounted on a reverse tilt device. The reverse tilt mechanism allows you to set the reclining chair to the Trendelenburg position. Additionally, if the reverse tilt mechanism is moved from the first position to the second position, the same will happen to the linkage mounted on it.

In the Trendelenburg pose, the body lies on its back or flat on its back with an inclination of 15-30 degrees, with the feet raised above the head. The reverse Trendelenburg pose similarly places the body on the back at an angle but with the head elevated. The position was named after the German surgeon Friedrich Trendelenberg (1844–1924).

The reverse tilt mechanism of the said patent includes a pair of support brackets, a tilt bracket and a lifting mechanism. The support brackets are mounted on the base, and the tilt bracket is rotatably connected to the support brackets so that the lifting mechanism moves the reverse tilt mechanism from the first position to the second position. The lifting mechanism includes two mounting brackets, a rod, two lifting links, a spring and a handle. The mounting brackets are rigidly connected to the side walls near the front. The mounting brackets are riveted and have an oversized hole with a bearing that accepts the rod. Thus, the rod is connected to the side walls by means of brackets. The rod is further connected to the lifting rods, which in turn are connected to the tilt bracket.

Claim 11 of the said patent shows a reclining chair having a base, a footrest, a seat, a backrest and a pair of spaced armrests, comprising: a linkage mechanism coupled to the base, the linkage mechanism comprising:

- the footrest mechanism is adapted to move between a first position and a second position;

- a footrest extension linkage which connects the footrest mechanism to the seatback reclining mechanism, the footrest extension linkage serving to unlock the footrest mechanism, thereby allowing the weight of the occupant to operate a handle which can be rotated connected to the armrest a footrest extension for moving the footrest mechanism between a first position and a second position;

- the backrest reclining mechanism is movable between a first and second position, wherein the backrest reclining mechanism is adjustable between a first position and a second position, while the footrest mechanism is in either a first position or a second position, and wherein the footrest mechanism is adjustable between a first position and a second position, while the seatback reclining mechanism is either in a first position or a second position.

The disadvantages of this solution include the limited kinematics of movement of the chair, the lack of the possibility of intermediate adjustment of the position of the backrest and footrest (only open or closed position).

Disclosure of the essence of the utility model.

The proposed utility model solves the problem of creating a transformable chair-couch with improved kinematics of the movement of the chair, that is, with the ability to adjust its height independently of the transformation and with the ability to fix any intermediate position of the backrest and footrest, as well as the transformation and lifting mechanism.

The problem is solved by the fact that the chair-couch is transformable, including two controlled drivers placed in control units, a transformation and lifting mechanism, which is a rigid frame, including a lower part, responsible for vertical lifting, connected to each other by connecting rods, and an upper part, responsible for rebuilding the chair into a couch, wherein the upper part forms a rigid contour of the seat, back and footrest support, made with the possibility of tilting the backrest in the direction opposite to the footrest support at an acute angle and extending the footrest support forward and upward, and fixing the position of the backrest and footrest supports in any position between the extreme points, motors configured to receive a signal from the control panel and operate independently of each other, with one of the motors operating the lower part, and the second motor the upper part of the lifting and transformation mechanism.

The transformation and lifting mechanism is driven by two motors, preferably DC electric motors, which are controlled by drivers located in the same housing with the transformation control units. These blocks are located in the niche of the front lower profile of the frame.

The first engine of the transformation and lifting mechanism regulates the vertical position of the couch-chair, the second engine raises the footrest mounting support and drives the backrest mounting support to change the angle of its inclination, that is, it is responsible for the possibility of transforming the chair into a couch and back.

Both parts of the transformation and lifting mechanism, including the lower part, which is responsible for the vertical lift, and the upper part, which is responsible for converting the chair into a couch, are formed by hinged levers.

By pressing the buttons on the control panel, the mechanism for transforming and lifting the couch chair is set in motion. The signal from the remote control is sent to the control unit, which drives one or the other motor or both simultaneously. Thus, there are three independent operating modes of the utility model:

- raising and lowering a transformable chair-couch (one motor is used);

- transformation mode from a chair to a couch, in which the back of the seat and the support of the footrest move (the second motor is activated);

- synchronous folding and lifting mode (both engines are activated).

In the optimal, but not the only possible option, the control panel is located outside the unit on a flexible wire.

The utility model is illustrated by the following illustrations:

In fig. 1 shows a general view of the device of the chair-couch in the folded state, when the transformation and lifting mechanism is at the lowest point;

In fig. Figure 2 shows a general view of the device of the chair-couch, on which the numbers indicate:

1 - closed loop of the lower part of the transformation and lifting mechanism,

2 - the upper part of the transformation and lifting mechanism in the form of a closed loop,

3 - one of the connecting rods of the transformation and lifting mechanism;

In fig. Figure 3 shows the uppermost position of the mechanism for transforming and lifting the couch chair, on which the numbers indicate:

4 - footrest support,

5 - support for the back of the couch-chair in a non-reclining state;

In fig. Figure 4 shows the position of the couch chair in the upper position of the transformation and lifting mechanism with the backrest tilted and the footrest support extended, on which the numbers indicate:

4 - footrest support,

5 - support for the back of the couch-chair in a non-reclining state;

In fig. 5 shows various combinations of the positions of the transformation and lifting mechanism, the tilt of the seat back of the couch chair and the support of the footrest.

The supporting part of the transformation and lifting mechanism consists of an upper and lower part and is preferably, but not the only possible option, made of carbon steel 4 mm thick. The individual parts of the upper and lower parts are fastened together by resistance welding, which ensures high structural strength.

The upper and lower parts of the transformation and lifting mechanism are fastened together by connecting rods, preferably four, made of carbon steel 5 mm thick. Bushings are installed at the connection points, preferably made of copper, which allow increasing the service life of this hinge unit.

In fig. 1 and fig. 2 shows the lowest and highest positions of the couch chair when in use, however, fixation is possible in any intermediate position, the moment of reaching which is determined using the control panel sending a signal to the engine control unit (not shown in the figure).

The possibility of fixing in any height position between the lowest and highest points allows the use of the mechanism for transforming and lifting the couch chair for people with different anatomical configurations, as well as comfortable work for another person with the user.

The upper part of the transformation and lifting mechanism includes the seat cushion, backrest and footrest. The contour becomes rigid and closed only after installing all the specified elements. The support for the legs 4 (Fig. 3) and the backrest support 5 (Fig. 3) are set in motion after receiving a signal to the engine from the remote control through the control unit. These parts move simultaneously and can be fixed in any available position, the moment of reaching which is determined using the control panel sending a signal to the engine control unit (not shown in Fig.).

The footrest support rotates at least 90 degrees between the start and end positions and moves from a vertical to a horizontal position, while it moves forward and rises. In the preferred, but not the only possible option, the forward extension occurs by 390 mm, the upward lift by 180 mm.

The support for the back of the couch chair can tilt in the direction opposite to the support for attaching the footrest at an acute angle, preferably up to 37 degrees. These transformations can be carried out independently of the movement of the lower part of the transformation and lifting mechanism, which is responsible for raising the couch chair (various variations of positions are shown in Fig. 5).

Implementation of a utility model.

The user sits on a couch chair in any of the positions (Fig. 1-5), then, using the control panel, which sends commands to the motor mechanisms of the couch chair through the control unit, raises or lowers the couch chair to the optimal height using the lower part transformation and lifting mechanism, and also selects the optimal position of the angle of deflection of the backrest and footrest using the upper part of the transformation and lifting mechanism. The moment of reaching the optimal height or angles of inclination of the backrest and footrest is fixed using the control panel.

In another embodiment, the specified manipulations with the remote control to transform the chair-couch are performed by an employee of the organization (for example, a doctor in a physiotherapy room or a cosmetologist in a beauty salon), while the end user is located on the chair-couch.

A transformable chair-couch has the ability to simultaneously make vertical movements regardless of the position of the upper part of the transformation and lifting mechanism (transformation into a couch) and change the angle of the backrest and footrest. The utility model is fixed in any position when moving both the lower and upper parts of the transformation and lifting mechanism, which are responsible, respectively, for the height of the transformation and lifting mechanism and for its transformation from a chair to a couch and back.

Thus, the proposed design of a transformable couch-chair allows you to adjust it in height, as well as change (in the angle of inclination) and fix the selected intermediate position of the backrest and footrest, and the change in height and angle of inclination are independent of each other, which improves the kinematics of the movement of the chair relative to known analogues.

Claims (4)

1. A transformable chair-couch, including two controlled drivers placed in control units, a transformation and lifting mechanism, which is a rigid frame, including a lower part, which is responsible for vertical lifting, and an upper part, which is responsible for converting the chair into a couch, connected to each other by connecting rods , wherein the upper part forms a rigid contour of the seat, backrest and footrest support, configured to tilt the backrest in the direction opposite to the footrest support at an acute angle and extend the footrest support forward and upward, and fix the position of the backrest and footrest support legs in any position between the extreme points, motors configured to receive a signal from the control panel and operate independently of each other, with one of the motors engaging the lower part, and the second motor the upper part of the lifting and transformation mechanism. 2. The chair-couch according to claim 1, characterized in that the motors are DC electric motors. 3. The chair-couch according to claim 1, characterized in that the control panel is located outside the main mechanism on a flexible wire. 4. The chair-couch according to claim 1, characterized in that the transformation and lifting mechanism is made of carbon structural steel.