CN203341951U - Chair for assisting users in standing up and sitting down - Google Patents

Abstract

The utility model relates to a chair for assisting sitting up, which belongs to the field of daily necessities. A parallelogram mechanism consisting of a chair surface (12), a connecting rod (13), a connecting rod (5) and a rocker (4), a chair body (9), a slider (7), a connecting rod (13) and a rocker (4) The composed rocker slider mechanism. The two mechanisms are combined into a six-bar mechanism. One end of the push rod (3) is hinged with the rocker (2), the other end is hinged with the rocker (4), one end of the rocker (2) is hinged with the push rod (3), and the other end is hinged with the worm shaft (1). The rocking bar (2) rotates and drives the six-bar combined mechanism. When getting up, the worm gear (14), worm screw (15) drive the rocking bar (2) to rotate clockwise, so that the push rod (3) drives the rocking bar (4) to rotate, so that the slide block (7) moves along the inner chute (8) ) moves upwards, while the chair surface (12) rotates around the pin shaft (10) to assist the user to stand up. When sitting down, the user's buttocks are close to the chair surface (12), and the rocker (2) rotates counterclockwise, so that the rocker (4) drives the slider (7) to move downward, and at the same time, the chair surface (12) is used sit down.

Description

A chair for assisting sitting up

technical field

The invention relates to a chair for assisting sitting up, which is especially suitable for helping the elderly or people with weak leg muscles to get up and sit down, and belongs to the field of daily necessities.

Background technique

Chairs have become people's daily necessities in daily life. When people sit on a common seat and want to get up or sit down, they need the support of the leg muscles to complete the action. However, it is more difficult for the elderly or those with weak leg muscles to complete this action. Elderly people or people with weak leg muscles need external force to get up and sit down.

At present, there are also some chairs that assist in sitting up, for example: the application number is 200720156011.4 utility model patent for a seat that assists in standing up, this patent uses four sets of connecting rods, and the use of the connecting rods to drive each other can facilitate the adjustment of the chair back and the footrest The lifting of the group can also increase the height of the seat, so as to provide a boost for the user to get up and stand up from the seat. Although this patent can help the user get up, its structure is relatively complicated and the cost is high; the application number is 201210391214.7 auxiliary chair The invention patent of the patent uses a chair frame, a seat board and a lifting mechanism with a power device. The lifting mechanism controls the lifting of the front seat board and the rear seat board of the auxiliary chair. When getting up and sitting down, the front seat board provides support for the body , so that the body does not hang in the air during the standing process, the user does not need to use waist strength, and the seat provides vertical support to maintain body balance. Although this patent has a simple structure, its applicability to the elderly and people with weak leg muscles is not obvious enough .

Contents of the invention

In order to overcome the above-mentioned technical defects, the present invention provides a chair for assisting sitting up with a simple structure, which is more labor-saving and convenient for the elderly and people with weak leg muscles to complete the movements of getting up and sitting down.

The present invention is achieved through the following technical solutions.

The chair for assisting sitting mainly includes: a rocker slider mechanism and a parallelogram mechanism.

The rocker slider mechanism includes: a chair body, a rocker, a connecting rod and a slide block. The rocker is hinged with the front leg of the chair body with a pin, and an inner chute is provided on the front leg of the chair body. The rocker pushes the slider through the connecting rod to move up and down along the inner chute of the leg of the chair body, and Compression springs are installed at the bottom of the chute to act as a buffer.

The parallelogram mechanism includes: chair surface, connecting rod and rocker. The front end of the chair surface is hinged together with a pin shaft, a slide block, and a connecting rod. When the connecting rod pushes the slide block to move up and down, the chair surface can rotate around the pin shaft. The other end of the chair surface is hinged with the connecting rod, and the other end of the connecting rod is hinged with the rocking bar, and the rocking bar is installed parallel to the chair surface.

The rocker slider mechanism is connected with the parallelogram mechanism to form a six-bar combined mechanism. The rotation of the worm gear drives the rocker to rotate, so that the push rod pushes the rocker to move to complete the rotation and up and down movement of the chair surface. A rocker slider mechanism and a parallelogram mechanism are symmetrically installed on the left and right sides of the chair body, and the left and right two sets of mechanisms are connected by a worm gear shaft.

Description of drawings

Fig. 1 is a schematic general diagram of the structure of the present invention.

Figure 2 is a schematic diagram of the structure of the chair body.

Figure 3 is a schematic diagram of the chair surface.

Figure 4 is a schematic diagram of the chair surface and mechanism.

Figure 5 is a schematic diagram of worm gear meshing.

Figure 6 is a schematic diagram of the worm gear shaft.

Detailed ways

The present invention is achieved through the following technical solutions. The chair for assisting sitting up mainly includes: a rocker slider mechanism and a parallelogram mechanism.

As shown in Figure 1, the rocker slider mechanism includes: chair body (9), rocker (4), connecting rod (13) and slider (7). Rocking bar (4) is hinged with the front leg of chair body (9) with bearing pin (11), is provided with inner chute (8) at the front leg of chair body (9), and rocking bar (4) passes connecting rod ( 13) Push the slider (7) to move up and down along the inner chute (8) of the leg of the chair body (9), and install a compression spring (6) at the bottom of the inner chute (8) to play a buffering role. The parallelogram mechanism comprises: a chair surface (12), a connecting rod (5), a connecting rod (13) and a rocking bar (4). The front end of chair surface (12) is hinged together with bearing pin (10) and slide block (7), connecting rod (13), and in the process that connecting rod (13) promotes slide block (7) to move up and down, chair surface (12 ) can rotate around the pin shaft (10). One end of connecting rod (5) is hinged together with chair surface (12), and the other end of connecting rod (5) is hinged with rocking bar (4), and rocking bar (4) is installed in parallel with chair surface (12), and connecting rod ( 5) Install in parallel with the connecting rod (13). Described rocker slider mechanism and parallelogram mechanism are combined into six-bar mechanism, and the left and right sides of chair body (9) are symmetrically installed six-bar combination mechanism, and two sets of six-bar combination mechanisms are connected by worm gear shaft (1). One end of the rocking lever (2) is hinged with the worm gear shaft (1), and the other end of the rocking lever (2) is hinged with the push rod (3). The worm wheel shaft (1) is provided with a worm wheel (14), the worm wheel (14) is engaged with the worm (15) for transmission, the motor drives the worm (15) to rotate, and the worm (15) drives the meshed worm wheel (14) and the worm shaft ( 1) Turn to drive the rocker (2) to rotate, and then drive the push rod (3) to push the rocker (4) to rotate around the pin shaft (11). the

The normal state of the auxiliary chair is that the chair surface (12) is parallel to the horizontal plane. When the user wants to sit down, first the chair surface (12) is rotated to form an angle of 90° with the horizontal plane, the user's buttocks are close to the chair surface (12), and then the rocking bar (4) passes through the connecting rod ( 13) Drive the chair surface (12) to rotate around the pin shaft (10), and at the same time, the chair surface (12) also follows the slider (7) hinged to it along the inside of the front leg of the chair body (9). The chute (8) moves slowly downwards, and the bottom of the chute (8) is equipped with a compression spring (6), which can play a buffering role when sitting down, allowing the user to change from a standing posture to a sitting posture. When getting up, the user's buttocks are close to the chair surface (12), and the rocker (4) swings to make the connecting rod (13) push the slider (7) to move upward along the chute (8), driving the chair The surface (12) moves upward, and the rocker (4) drives the chair surface (12) to rotate around the pin shaft (10) through the connecting rod (5) and the connecting rod (13) at the same time, so that the chair surface (12) supports Lift the user, allowing the user to change from a sitting position to a standing position. The user's body can always be supported during the whole sitting-up process, there is no stage where the body is suspended, and the user's legs do not need to exert too much force. The position change of the chair surface (12) in the whole process conforms to the movement trajectory of the human body during the sitting process.

Wherein chair body (9) left and right two sets of six-bar combination mechanisms are connected together by worm gear shaft (1), and worm gear shaft (1) is provided with worm gear (14), and worm gear (14) meshes with worm screw (15), and worm screw (15) ) is connected with a motor that can rotate in both positive and negative directions, the rotation of the motor in both positive and negative directions drives the worm (15) to rotate, and the worm (15) drives the worm gear (14) and the worm gear shaft (1) meshed with it to rotate, thereby Drive the rocker (2) to rotate, and then push the rocker to move to complete the action of assisting sitting up.

Claims (4)

1. assisted the chair of sitting for one kind, mainly comprise: slider-rocker mechanism and parallel-crank mechanism, its slider-rocker mechanism comprises: chair body (9), rocking bar (4), connecting rod (13) and slide block (7), rocking bar (4) is assemblied in the front leg portions of chair body (9) by bearing pin (11), foreleg at chair body (9) is provided with internal chute (8), and by connecting rod (13) band movable slider (7), the internal chute (8) along chair body (9) shank moves up and down rocking bar (4); Its parallel-crank mechanism comprises: seat (12), connecting rod (5), connecting rod (13) and rocking bar (4), the front end of seat (12) and slide block (7), connecting rod (13) use bearing pin (10) hinged, seat (12) when rotating, bearing pin (10) is moved up and down with slide block (7), the other end of seat (12) and connecting rod (5) are hinged, the same rocking bar of the other end (4) of connecting rod (5) is hinged, connecting rod (5) is parallel with connecting rod (13), and seat (12) is parallel with rocking bar (4).

2. the chair of sitting of having assisted according to claim 1, it is characterized in that: described slider-rocker mechanism and parallel-crank mechanism are connected in parallel and form six bar combined mechanisms.

3. the chair of sitting of having assisted according to claim 1, it is characterized in that: described seat (12), slide block (7) and connecting rod (13) are hinged, and the rotational angle range of seat (13) is 0 °～90 °.

4. the chair of sitting of having assisted according to claim 1 and 2, it is characterized in that: the symmetrical six bar combined mechanisms that described slider-rocker mechanism and parallel-crank mechanism composition are installed in the left and right sides of described chair body (9), two cover six bar combined mechanisms link together by worm-wheel shaft (1), rocking bar (2), worm-wheel shaft (1) are hinged, rocking bar (2) other end and push rod (3) are hinged, worm-wheel shaft (1) rotates, drive rocking bar (2) and rotate, make push rod (3) promote rocking bar (4) and rotate around bearing pin (11).

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