CN105455470B9 - Old man's chair mechanical device - Google Patents

Abstract

The invention relates to a mechanical extension device of an old man chair, which comprises a left side part, a right side part and a lifting base, wherein the left side part and the right side part are respectively provided with an old man chair armrest mounting plate, a second lifting connecting piece, a leg conversion piece, a first lifting connecting piece, a front-back conversion connecting piece, a backrest conversion connecting piece, an old man chair seat frame mounting plate, a rear mounting bracket, an old man chair foot rod I, an old man chair foot rod II, an old man chair foot rod III, an old man chair foot rod IV, an old man chair foot plate, an old man chair connecting rod, a third lifting connecting piece, a front mounting piece, a rear mounting piece and a bolt connecting piece; the lifting base comprises a chassis, a lifting frame, a lifting connecting rod, a welding connecting piece and an adjustable connecting piece; still be provided with electric actuator, electric actuator includes motor, motor push rod, and the motor rotates to be installed on the chassis, and motor push rod rotates with welded connection spare to be connected. The invention has the advantages of safety, stability, firm structure, high installation efficiency, material saving and perfection of the design of the chair for the old people.

Description

An elderly chair mechanism

technical field

The invention relates to a mechanical device for an elderly chair, in particular to a mechanical device for an elderly chair that can realize four postures and can realize slow and stable lifting. The invention is used to help the elderly with inconvenient legs and feet and poor waist strength to stand up from the sofa, so as to facilitate the movement of the elderly.

Background technique

At present, the existing mechanical device of the elderly chair has six major deficiencies: 1. The lifting part of the mechanical device of the elderly chair is unstable, easy to shake, reduces the comfort, and is prone to safety problems; 2. It is divided into multiple parts for assembly. Cumbersome and low installation efficiency; 3. High steel consumption and high cost; 4. The backrest is easy to shake; 5. The legs cannot be fully folded;

SUMMARY OF THE INVENTION

The invention provides an elderly chair mechanical device with simple structure, convenient installation, stability and reliability, and electric function.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: the mechanical device of the elderly chair includes a left part, a right part and a lifting base, and is characterized in that the left part and the right part are provided with an elderly chair armrest mounting plate, The second lifting connector, the leg conversion part, the first lifting connector, the front and rear conversion connectors, the backrest conversion connector, the seat frame mounting plate of the elderly chair, the rear mounting bracket, the elderly chair leg bar 1, the elderly chair leg bar 2 , Elderly chair foot bar 3, Elderly chair foot bar 4, Elderly chair foot plate, Elderly chair connecting rod, Third lifting connector, Front mounting, Rear mounting, Bolt connector, Bolt connector and front mount are rotatably connected , the front mounting piece and the rear mounting piece are installed on the mounting plate of the seat frame of the elderly chair; the third lifting connecting piece is respectively connected with the mounting plate of the seat frame of the elderly chair and the second lifting connecting piece, and the second lifting connecting piece is connected with The seat frame mounting plate of the elderly chair is rotatably connected, the front and rear conversion connectors are respectively rotatably connected with the second lifting connector and the first lifting connector, and the first lifting connector is respectively rotatably connected with the armrest mounting plate and the leg conversion component of the elderly chair; The leg conversion parts are respectively connected with the connecting rod of the elderly chair, the seat frame mounting plate of the elderly chair, and the foot rod of the elderly chair; It is directly connected with the lifting base for linkage, which improves the safety and comfort.

The lifting base of the present invention includes a chassis, a lifting frame, a lifting frame, a lifting link, a welded connection piece, and an adjustable connecting piece. It is rotatably connected with the lifting frame and the chassis, the welding connector is rotatably connected with the lifting frame, the square tube of the adjustable connector is sleeved into the square tube of the welded connector, and the adjustable connector is rotatably connected with the bolt connector to realize the function of adjusting the width. .

The bolt connecting piece of the present invention is rotatably connected with the front mounting piece through the first rotating shaft, the third lifting connecting piece is connected with the seat frame mounting plate of the elderly chair through the second rotating shaft, and the third lifting connecting piece is connected with the second rotating shaft through the third rotating shaft. The hoisting connector is connected to the second hoisting connector through the fourth shaft and is connected to the seat frame mounting plate of the elderly chair, and the front and rear conversion connectors are respectively connected to the second hoisting connector and the first hoisting connection through the fifth and sixth shafts. The first lifting connecting piece is connected with the armrest mounting plate of the elderly chair through the seventh rotating shaft, and the first lifting connecting piece is connected with the leg conversion piece through the eighth rotating shaft; The eleventh rotating shaft is connected with the connecting rod of the elderly chair, the mounting plate of the seat frame of the elderly chair, and the foot rod of the elderly chair. Position bushing, a third limit bushing is installed on the backrest conversion connecting piece, a first tangent surface is arranged on the third lifting connecting piece, a second tangent surface is arranged on the first lifting connecting piece, and a second tangent surface is arranged on the rear mounting piece There is a fourth tangent plane, a third tangent plane and a fifth tangent plane are arranged on the second lifting connecting piece, a sixth tangent plane is arranged on the welding connection piece, the first limiting bushing is matched with the first tangent plane, the first tangent plane is The second limit bushing is matched with the first tangent surface and the second tangent surface, and the third limit bushing is matched with the fourth tangent surface.

The lifting frame of the present invention is connected with the chassis through the twelfth rotating shaft, the lifting frame is connected with the lifting frame through the fourteenth rotating shaft, and the lifting link is connected with the lifting frame and the chassis through the thirteenth rotating shaft and the fifteenth rotating shaft respectively, The welding connecting piece is connected with the lifting frame through the sixteenth rotating shaft, the lifting frame is provided with a limit pad, the chassis is provided with a seventh tangent surface, and the limit pad is matched with the seventh tangent surface.

When the present invention is in the sitting posture and the lifting state, the third limiting bush on the backrest conversion connecting piece is tangent to the fourth tangent plane of the rear mounting piece, so as to realize a firm and stable position limit, and ensure the sitting posture and the lifting state of the sofa for the elderly. The backrest is stable during the lifting process, safe and comfortable.

The present invention is also provided with an electric device. The electric device includes a motor and a motor push rod. The motor is rotatably mounted on the chassis through the nineteenth rotating shaft. The motor push rod is rotatably connected with the welding connecting piece through the eighteenth rotating shaft. Drive the elderly chair to exercise as a whole.

The sixteenth rotating shaft, the eighteenth rotating shaft, and the nineteenth rotating shaft of the present invention are all bolts, and the bolt connection mode facilitates transportation, saves installation steps, and improves installation efficiency.

The present invention directly assembles the left and right side parts and the lifting base, removes redundant intermediate connections, improves safety and comfort, reduces material consumption, saves resources, simplifies installation, and improves labor efficiency.

The front mounting piece and the rear mounting piece of the present invention are directly assembled with the sofa wooden frame by using the flanging design, and do not need to be divided into multiple assemblies for reassembly. The zerowall sofa wooden frame is universal, and the installation efficiency is high.

The invention increases the position of the backrest, is firm and stable without shaking, is safe, reliable and comfortable to use, and greatly optimizes the use experience.

Description of drawings

1 is a schematic diagram of the left part or the right part of the present invention when the legs are fully folded;

Figure 2 is a schematic diagram of the left part or the right part of the embodiment of the present invention when the legs are fully unfolded;

Fig. 3 is the schematic diagram when the backrest of the left part or the right part of the embodiment of the present invention is completely overturned;

Fig. 4 is the schematic diagram when the lifting base is completely raised according to the embodiment of the present invention;

5 is a schematic diagram of the composition and operation mode of the main components of the embodiment of the present invention;

Fig. 6 is the chassis that forms the lifting base of the embodiment of the present invention;

Fig. 7 is the block that forms the lifting base of the embodiment of the present invention;

Fig. 8 is the lifting frame that constitutes the lifting base of the embodiment of the present invention;

Fig. 9 is the welding connector that constitutes the lifting base of the embodiment of the present invention;

Fig. 10 is an adjustable connector that constitutes a lifting base according to an embodiment of the present invention;

11 is a schematic diagram of an initial state of an embodiment of the present invention;

In the picture: 1- the foot of the elderly chair; 2- the foot of the elderly chair; 3- the foot of the elderly chair; 4- the frame mounting plate of the elderly chair; 5- front mounting part; Connecting rod; 8-rear mounting bracket; 9-backrest conversion connecting piece; 10-elderly chair armrest mounting plate; 11-second lifting connecting piece; 12-front and rear conversion connecting piece; 13-third lifting connecting piece; 14 - The first lifting connector; 15 - leg conversion part; 16 - four legs of the elderly chair; 17 - one leg bar of the elderly chair; 18 - bolt connector;

19-first fixing hole; 20-second fixing hole; 21-third fixing hole; 22-first shaft; 23-fourth fixing hole; 24-fifth fixing hole; 25-sixth fixing hole; 26- The second reel; 27-the third reel; 28-the fourth reel; 29-the fifth reel; 30-the sixth reel; 31-the seventh reel; 32-the eighth reel; 33-the ninth reel;34-the tenth reel Rotary axis; 35- Eleventh axis of rotation; 36- Lifting link; 37- Twelfth axis of rotation; 38- Thirteenth axis of rotation; 39- Fourteenth axis of rotation; 40- Fifteenth axis of rotation; 41- Sixteenth axis of rotation; 42 - seventh fixing hole; 43 - eighth fixing hole; 44 - ninth fixing hole; 45 - tenth fixing hole; 46 - seventeenth shaft; 47 - motor; 48 - eighteenth shaft; 49 - tenth Nine shafts; 50-motor push rod; 51-sixth tangent plane; 52-first limit bushing; 53-first tangent plane; 54-second limit bushing; 55-second tangent plane; 56- The third tangent plane; 57-limiting pad; 58-the third limit bushing; 59-the fourth tangent plane; 60-twentieth axis; 61-twentieth axis; 62-twentieth axis; 63-fifth tangent plane; 64-seventh tangent plane; 65-chassis; 66-elevating frame; 67-elevating frame; 68-welding connector; 69-adjustable connector.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and through embodiments.

The mechanical device of the elderly chair in this embodiment includes a left part, a right part and a lifting base, the left part and the right part are fixedly connected by the lifting base, wherein the left part and the right part are provided with mounting plates for the armrest of the elderly chair 10. The second lifting connector 11, the leg conversion member 15, the first lifting connector 14, the front and rear conversion connector 12, the backrest conversion connector 9, the seat frame mounting plate of the elderly chair 4, the rear mounting bracket 8, the first Elderly chair foot bar 17, second elderly chair foot bar 2, third elderly chair foot bar 3, fourth elderly chair foot bar 16, elderly chair foot plate 1, elderly chair connecting rod 7, third lifting connector 13, front The mounting member 5, the rear mounting member 6, and the lifting base are assembled from the chassis 65, the lifting frame 66, the lifting frame 67, the welding connecting member 68, the adjustable connecting member 69, the lifting connecting rod 36 and other components.

In the left and right side parts of the embodiment of the present invention, the bolt connecting member 18 is rotatably connected to the front mounting member 5 through the first rotating shaft 22 , and the front mounting member 5 passes through the first fixing hole 19 , the second fixing hole 20 and the third fixing hole 21 . It is installed on the seat frame mounting plate 4 of the elderly chair, and drives the left and right sides to move. The seat frame mounting plate 4 of the elderly chair is provided with a first limiting bush 52; the rear mounting member 6 passes through the fourth fixing hole 23 and the fifth fixing hole. 24. The sixth fixing hole 26 is connected to the seat frame mounting plate 4 of the elderly chair, and the rear mounting member 6 is provided with a fourth tangent surface 59; The twentieth rotating shaft 60 and the twenty-first rotating shaft 61 are rotatably connected, the backrest conversion connecting member 9 is mounted with a third limiting bush 58, and the backrest conversion connecting member 9 is connected to the armrest mounting plate of the elderly chair through the twenty-second rotating shaft 62 10 is connected; one end of the third lifting connector 13 is connected to the seat frame mounting plate 4 of the elderly chair through the second rotating shaft 26, and the other end is connected to the second lifting connecting member 11 through the third rotating shaft 27, and the third lifting connecting member 13 A first tangent surface 53 is provided on the second lifting connector 11, a third tangent surface 56 and a fifth tangent surface 63 are provided on the second lifting connector 11, and the second lifting connector 11 is connected to the armrest mounting plate 10 of the elderly chair through the fourth rotating shaft 28. The two ends of the front and rear conversion connectors 12 are respectively connected with the second lifting link 11 and the first lifting link 14 through the fifth rotating shaft 29 and the sixth rotating shaft 30, and the first lifting link 14 is provided with a second tangent surface 55. One end of the first lifting connector 14 is connected to the armrest mounting plate 10 of the elderly chair through the seventh rotating shaft 31, and the other end is connected to the leg conversion member 15 through the eighth rotating shaft 32, and the armrest mounting plate 10 of the elderly chair is installed with a second limit The bushing 54; the leg conversion member 15 is connected to the elderly chair connecting rod 7, the elderly chair seat frame mounting plate 4, and the fourth elderly chair foot rod 16 through the ninth rotating shaft 33, the tenth rotating shaft 34, and the eleventh rotating shaft 35 respectively.

In the lifting base of the embodiment of the present invention, the lifting frame 66 is connected to the chassis 65 through the twelfth rotating shaft 37, the lifting frame 67 is connected to the lifting frame 66 through the fourteenth rotating shaft 39, and the lifting links 36 pass through the thirteenth shaft respectively. The rotating shaft 38 and the fifteenth rotating shaft 40 are connected to the lifting frame 67 and the chassis 65; In this way, the function of adjusting the width is realized.

In this embodiment, the left and right side parts are fixed on the lifting base through the seventh fixing hole 42 , the eighth fixing hole 43 , the ninth fixing hole 44 and the tenth fixing hole 45 . The adjustment connector 69 is connected, and the other end is connected with the left and right side parts through the first rotating shaft 22 to realize the function of the lifting base to drive the left and right side movements; Rotatingly connected, the electric device is mounted on the chassis 65 through the nineteenth rotating shaft 49 , and the electric device includes a motor 47 and a motor push rod 50 .

The movement principle of this embodiment is: the motor push rod: 50 slides to drive the lifting base to move and guide the left and right sides for linkage. In the initial position, the lifting frame 67 is in contact with the welding connector 68 (FIG. 11), and the motor push rod 50 is retracted, thereby driving the welding connector 68 connected to the motor push rod 50 to rotate, and the welding connector 68 drives the sleeve The adjustable connecting piece 69 moves, and the adjustable connecting piece 69 drives the elderly chair seat frame mounting plate 4 fixedly connected with the front mounting piece 5 to move through the bolt connecting piece 18, and the rear mounting piece fixed on the elderly chair seat frame mounting plate 4 moves. 6 move simultaneously with the seat frame mounting plate 4 of the elderly chair; the seat frame mounting plate 4 of the elderly chair simultaneously drives the rear mounting bracket 8, the third lifting connecting piece 13, the leg conversion piece 15 and the third elderly chair leg bar 3 to move, The rear mounting bracket 8 drives the backrest conversion connecting member 9 to rotate, and the leg conversion member 15 drives the fourth elderly chair foot bar 16 and the elderly chair connecting rod 7 to move, thereby driving the movement of the legs. In this state, under the action of gravity, the first lifting connecting piece 14 and the second limiting bush 54 are tangent to the first tangent plane 53, and the second lifting connecting piece 11 and the armrest mounting plate 10 of the elderly chair are at the fifth tangent. The tangent plane 63 is tangent, the first lifting connector 14, the second lifting connector 11 and the front and rear conversion connectors 12 remain stationary; in the process of the motor push rod 50 being continuously retracted, the seat frame mounting plate 4 of the elderly chair moves backwards , the legs are stretched forward, and when the first limit bushing 52 and the third lifting connecting piece 13 are tangent to the first tangent plane 53, the legs are fully expanded, so that the mechanical stretching device for the elderly chair realizes the Figure 1 to Figure 2 state process.

After that, the motor push rod 50 continues to be retracted, the third lifting link 13 drives the second lifting link 11 to rotate, the leg conversion member 15 drives the first lifting link 14 to rotate, and the front and rear switching links 12 are connected by the first lifting link. 14 and the second lifting connector 11 are driven simultaneously, the first lifting connector 14 originally tangent to the second limiting bush 54 on the second tangent plane 55 and the elderly chair armrest mounting plate 10 on the fifth tangent plane The second lifting connecting piece 11 that is tangent to 63 is lifted upwards and leaves the limit, until the second lifting connecting piece 11 and the armrest mounting plate 10 of the elderly chair are tangent at the third tangent plane 56, the backrest is completely overturned, so that the elderly The chair mechanical extension device realizes the process of moving from Fig. 2 to Fig. 3. On the contrary, in the process of the motor push rod 50 moving forward until the lifting frame 67 and the welding connection piece 68 are in contact with the sixth tangent plane 51 (see FIG. 11 ), the mechanical stretching device for the elderly chair has successively realized the change from FIG. 3 to FIG. 2 . From Figure 2 to Figure 1, the process of tucking the legs together.

In the initial state of FIG. 11 , when the motor push rod 50 continues to move forward, the lifting base is connected to the lifting frame 66 and the lifting link 36 on the chassis 65 through the twelfth rotating shaft 37 and the fifteenth rotating shaft 40 . Movement, so that the lifting frame 67 connected to the lifting frame 66 and the lifting link 36 through the thirteenth rotating shaft 38 and the fourteenth rotating shaft 39 is lifted, and the left and right sides that are fixed on the lifting frame 67 and remain relatively static are lifted together, In this way, the mechanical extension device of the elderly chair realizes the process from the state of FIG. 1 to FIG. 4 . Conversely, when the motor push rod 50 is retracted, the mechanical extension device for the elderly chair slowly descends until the limit pad 57 on the lifting frame 66 contacts the chassis 65 at the seventh tangent plane 64, and the mechanical extension device for the elderly chair returns to the initial sitting position.

In this embodiment, the components and structure are redesigned, redundant intermediate connections are removed, and the left and right components are directly connected to the lifting base, which simplifies the installation method, improves labor efficiency, and significantly improves safety and comfort.

In this embodiment, the backrest limit design is added, which ensures the stability of the backrest in the sitting posture of the sofa of the elderly chair and the lifting process, and is safe and comfortable.

This embodiment adopts a flanging design, which can be applied to the zerowall sofa wooden frame, and can be directly assembled with the sofa wooden frame, and does not need to be divided into multiple assemblies, and the installation efficiency is high.

The structure of the present invention is convenient to assemble, safe and stable, and any simple deformation or equivalent transformation of the present invention should be considered to fall within the protection scope of the present invention.

Claims (10)

1. A mechanical device for an elderly chair, comprising a left part, a right part and a lifting base, The left and right parts are provided with the same armrest mounting plate and second lifting connection for the elderly parts, leg conversion parts, first lift connection parts, front and rear conversion connection parts, backrest conversion connection parts Parts, seat frame mounting plate of the elderly chair, rear mounting bracket, the elderly chair foot bar 1, the elderly chair foot bar 2, Elderly chair foot bar 3, Elderly chair foot bar 4, Elderly chair footrest, Elderly chair connecting rod, The third Riser connection, front installation, rear installation, bolt connection, bolt connection and front installation The parts are rotated and connected, and the front and rear installation parts are installed on the seat frame installation plate of the elderly chair; The three lifting connectors are respectively rotatably connected with the seat frame mounting plate of the elderly chair and the second lifting connector. The second lifting connector is rotatably connected with the armrest mounting plate of the elderly chair, and the front and rear conversion connectors are respectively It is rotatably connected with the second lifting connecting piece and the first lifting connecting piece, and the first lifting connecting piece is respectively It is rotatably connected with the armrest mounting plate and the leg conversion part of the elderly chair; the leg conversion parts are respectively connected with the elderly Four-rotation connection of the chair connecting rod, the seat frame mounting plate of the elderly chair, and the foot rod of the elderly chair; the left part, The bolted connection of the right part is swivel mounted on the lifting base. 2. The mechanical device of the elderly chair according to claim 1, characterized in that: the lift The lowering base includes the chassis, the lifting frame, the lifting frame, the lifting link, the welding connection, the adjustable joint, the lifting frame is rotatably connected with the chassis, the lifting frame is rotatably connected with the lifting frame, The lift links are respectively connected with the lift frame and the chassis in rotation, and the welded connection piece is connected with the lift frame in rotation. The square tube of the adjustable connector is sleeved into the square tube of the welded connector, and the adjustable connector is connected to the The bolted connection is connected in rotation. 3. The elderly chair mechanical device according to claim 1 is characterized in that: the screw The bolt connecting piece is rotatably connected with the front mounting piece through the first rotating shaft, and the third lifting connecting piece passes through the first rotating shaft. The second rotating shaft is connected with the mounting plate of the seat frame of the elderly chair, and the third lifting connecting piece is connected with the first connecting piece through the third rotating shaft The two lifting connectors are connected, and the second lifting connector is installed with the armrest of the elderly chair through the fourth rotating shaft The plates are connected, and the front and rear conversion connectors are respectively connected with the second lifting shaft through the fifth rotating shaft and the sixth rotating shaft. The connector and the first lifting connector are connected, and the first lifting connector is connected to the elderly chair through the seventh rotating shaft The armrest mounting plate is connected, and the first lifting connecting piece is connected with the leg conversion piece through the eighth rotating shaft; The leg conversion piece is respectively connected with the elderly chair through the ninth rotating shaft, the tenth rotating shaft and the eleventh rotating shaft The rod, the mounting plate of the seat frame of the elderly chair, and the legs of the elderly chair are connected in four, and the mounting plate of the seat frame of the elderly chair is provided with A first limit bushing is installed, the armrest mounting plate of the elderly chair is installed with a second limit bushing, and the backrest is rotated. A third limit bushing is installed on the replacement connecting piece, and a first tangent is arranged on the third lifting connecting piece A second phase tangent surface is arranged on the first lifting connector, and a fourth phase surface is arranged on the rear mounting part. The tangent plane, the second hoisting connector is provided with a third tangent plane and a fifth tangent plane, which are connected by welding There is a sixth tangent surface on the piece, the first limit bushing is matched with the first tangent surface, and the second limit bushing is matched with the first tangent surface. The sleeve is matched with the first tangent surface and the second tangent surface, and the third limit bushing is matched with the fourth tangent surface. 4. The mechanical device for the elderly chair according to claim 2, wherein the lift The lowering frame is connected to the chassis through the twelfth shaft, and the lifting frame is connected to the lifting frame through the fourteenth shaft. The frame is connected, and the lifting link is connected to the lifting frame and the chassis through the thirteenth rotating shaft and the fifteenth rotating shaft respectively. Connected, the welding connector is connected to the lifting frame through the sixteenth shaft, and the square of the connector can be adjusted. The tube is sleeved into the square tube of the welded connector, the lifting frame is provided with a limit pad, and the chassis is provided with a first Seven-phase tangent plane, the limit pad cooperates with the seventh-phase tangent plane. 5. The mechanical device of the elderly chair according to claim 2 is characterized in that: also set There is an electric device. The electric device includes a motor and a motor push rod. The motor is rotated and installed on the chassis. The push rod of the motor is rotatably connected with the welding connector. 6. according to the described elderly chair mechanical device of claim 1 or 2, it is characterized in that: sitting posture In the raised state, the third limit bushing on the backrest conversion connector and the fourth limiter on the rear mounting Tangent faces are tangent. 7. The mechanical device for the elderly chair according to claim 5, characterized in that: the electrical The machine is rotated and installed on the chassis through the nineteenth rotating shaft, and the motor push rod is connected to the welding machine through the eighteenth rotating shaft. Rotary connection of the connecting piece. 8. The mechanical device for the elderly chair according to claim 4, characterized in that: the first The sixteen shafts are latches. 9. The mechanical device for the elderly chair according to claim 7, wherein: the first The eighteenth rotating shaft and the nineteenth rotating shaft are all bolts. 10. The mechanical device of the elderly chair according to claim 1, characterized in that: the front safety Both the mounting part and the rear mounting part are provided with outer flanges.

Images