TWI851311B - Rehabilitation medical chair sitting and lying angle adjustment mechanism - Google Patents

Abstract

A rehabilitation medical chair seat and reclining angle adjustment mechanism is mainly composed of a main frame body with a plurality of rotating caster devices and an openable armrest side panel respectively arranged at the bottom and two sides. The main frame body is combined with a telescopic damping drive, a seat frame assembly, a chair back frame assembly, a leg rest frame assembly, a lifting mechanism assembly, and a foot pedal frame assembly between the two armrest side panels, wherein the front side and the rear side of the seat frame assembly are respectively connected to the leg rest frame assembly and the chair The back frame assembly, the telescopic damping drive is connected to drive the chair back frame assembly, the seat frame assembly, and the leg support frame assembly to generate different swinging angles, and the lifting mechanism assembly is connected to drive the seat frame assembly to rise or fall. The foot pedal frame assembly is arranged at the bottom of the main frame and can be moved horizontally out of the front side of the main frame; thereby, when the user uses the rehabilitation medical chair, the upper body sitting and lying posture, as well as the angle and height of the leg support can be adjusted.

Description

Sitting and lying angle adjustment mechanism for rehabilitation medical chairs

The present invention relates to a rehabilitation medical chair, in particular a chair specially used for rehabilitation medical purposes, and uses a plurality of linkage components to achieve the effect of adjusting the sitting and lying angles.

According to the Republic of China's new patent certificate No. M268016 and M355703, both are related to angle adjustment structures for medical chairs. They are generally composed of a chair frame body with a seat frame, the front and rear sections of the seat frame are respectively connected to a footrest frame and a backrest frame, and the back of the backrest frame is convexly provided with at least one rod that is connected to one end of the backrest connecting rod, and the chair The other end of the back connecting rod is hinged with a supporting rod protruding from a chair frame rotating rod. A branch rod is protruding from the chair frame rotating rod and is hinged with one end of the footrest connecting rod, and the other end of the footrest connecting rod is hinged with a protruding rod on the back of the footrest frame. A soft pad is covered on the above-mentioned frames. In addition, one end of a buffer component is hinged to a fixed position on the chair frame body, and the other end is hinged with an ear protruding from the chair frame rotating rod. However, the inventor believes that the above medical chairs are too simple in structure, low in price, and have poor profits. He hopes to break away from the low-price competition and develop and produce more advanced, safe, sturdy, high-priced, and high-profit rehabilitation medical chairs; thereby promoting sales to more modern, sophisticated, and high-end medical institutions and increasing sales turnover.

In view of this, the inventor, based on his many years of experience in manufacturing, developing and designing related products, has designed and carefully evaluated the above-mentioned goals and finally obtained this invention which is truly practical.

In view of the shortcomings of traditional medical chairs, such as overly simple structure, low unit price, and poor profit.

The present invention provides a mechanism for adjusting the sitting and lying angles of a rehabilitation medical chair, including:

A main frame is placed on the ground and has two parallel corresponding side frames. A lifting guide plate is fixed at the middle position of the inner side of the two side frames, and a rotating caster device is provided at the front and rear ends of the two side frames. A main rotating rod is pivoted between the two side frames, and a first fixed base frame and a second fixed base frame are fixedly connected. The lifting guide plate is provided with a first elongated groove and a second elongated groove. Two first swing rods are radially pivoted on the main rotating rod, and the other end of each first swing rod is axially pivoted to one end of a first fixed rod. The other end of the first fixed rod is simultaneously fixed to one end of a second fixed rod and pivoted to one end of a second swing rod;

A telescopic damping actuator is pivotally connected to the second fixed base frame at one end, and the other end is pivotally connected to and drives the main rotating rod to rotate;

A seat frame assembly has two parallel seats, the middle section of each seat frame is simultaneously pivoted to the other end of the second swing rod of the main frame and the front end of a first driven rod, the rear section of the first driven rod is pivoted to one end of a third swing rod, the other end of the third swing rod is pivoted to the inner side of the lifting guide plate, and the rear section of each seat frame is pivoted to one end of a first linking member, the other end of the first linking member is pivoted to one end of a second linking member, the other end of the second linking member is pivoted to the outer side of the lifting guide plate;

A chair back frame assembly is pivoted to the rear side of the seat frame assembly and swings, and generates different swinging angles with the seat frame assembly. It is mainly composed of two connecting parts, one end of which is pivoted to the rear end of each seat frame, and the other end of each connecting part is pivoted to one end of a fourth swing rod, and the other end of the fourth swing rod is pivoted to the rear end of each first driven rod of the seat frame assembly, and the top end of each connecting part is fixedly connected to a back frame upward;

A leg rest assembly is pivoted to the front side of the seat frame assembly and swings, and generates different swinging angles with the seat frame assembly. It is mainly composed of two first swinging members respectively pivoting the front end of each seat frame, the other end of the second fixing rod of the main frame and one end of a follower, and one end of a second swinging member, and the other end of the second swinging member is pivoted to the other end of the follower;

A lifting mechanism assembly, which is mainly composed of a first outer swing rod and a second outer swing rod, one end of which is respectively pivoted to the outer upper edge and the outer lower edge of each lifting guide plate, the other end of the first outer swing rod is pivoted to the middle section of a connecting member, the front end of the connecting member is pivoted to the second swing rod of the main frame, and the rear end of the connecting member is pivoted to the second The other end of the outer swing rod, at the same time, the link is pivotally connected to the first link of the seat frame assembly. In addition, the middle position of the first outer swing rod and the lower edge of the lifting guide plate are respectively connected to the two ends of a spring, and the inner side of the second outer swing rod is convexly provided with two guide posts, and the two guide posts are moved in the first elongated groove and the second elongated groove respectively;

A foot pedal frame assembly is disposed at the bottom of the main frame and can be moved horizontally out of the front side of the main frame;

The two armrest side panels are respectively arranged on the left and right sides of the main frame, and one end of each armrest side panel is pivoted to the side frame of the main frame so that the armrest side panel can pivot outward horizontally;

The two side panel positioning devices are installed on each side frame and control each armrest side panel to position and close the left and right sides of the main frame;

The two caster positioning devices are respectively arranged at the two ends of the first fixed base frame and located below each of the side frames, and are linked to control the rotation of the rotating caster devices of each of the side frames.

The effects of this invention are:

(1) By using an electric telescopic damping drive integrated connection action adjustment method, the chair can be controlled to be adjusted to a sitting mode, a lying mode, and an ascending and descending mode according to the needs of the user, achieving a quick adjustment effect and providing convenience of use. (2) The armrest side panel can be pivoted outward horizontally to allow the user to easily leave the side of the rehabilitation medical chair, and the armrest side panel can be positioned using the side panel positioning device to prevent the armrest side panel from swinging sideways at will, thereby achieving safety of use. (3) The storage board can be folded upward from the armrest side panel and items can be placed thereon, thereby achieving convenience and practicality. (4) When the caster positioning device is stepped on, the four sets of rotating caster devices 12 can be synchronously controlled to rotate or not rotate, thereby achieving practicality and safety. (V) The footrest assembly can be moved and pulled out to the front side of the rehabilitation medical chair for the user to step on, thereby increasing the added value of the rehabilitation medical chair.

[Original work]

1: Seat cushion

2: Back cushion

3: First leg cushion

4: Second leg cushion

10: Main frame

101: Side frame

11: Lifting guide plate

5: The first long groove

6: Second long groove

12: Rotating caster device

13: Main rotating rod

131: Ear

14: First fixed chassis

15: Second fixed base frame

16: First swing lever

161: First synchronous connecting rod

17: First fixed rod

18: Second fixed rod

181: Second synchronous connecting rod

19: Second swing lever

20: Telescopic damping drive

21: Telescopic rod

22: Motor device

30: Seat assembly

31: Seat frame

32: First follower rod

33: Third swing

34: First linkage

35: Second linkage

36: Third synchronous connecting rod

40: Seat back frame assembly

41: Connectors

42: Fourth swing

43: Backrest

44: Fourth synchronous connecting rod

45: Support plate

50: Leg rest assembly

51: First swing member

52: Follower

53: Second swing member

60: Lifting mechanism components

61: First outside swing

62: Second outside swing

63: Linkage

64: Spring

65: Guide column

70: Footrest assembly

71: Pedaling

72: Base frame

73: Slider

74: Hollow casing

75: Rotating wheel

80: Armrest side panel

81: Storage board

82: Positioning piece

83: Positioning hole

84: Hinge device

90: Side panel positioning device

91: Control panel

92: Hollow sliding tube

93: Positioning pin

100: Caster positioning device

110: Swing the pedal

111: Control crossbar

112: Fifth swing lever

113: Second follower rod

114: Rocker bar

115: Third follower rod

116: Fourth follower rod

117: Linkage rod

Figure 1 is a three-dimensional combination diagram of the present invention.

Figure 2 is a diagram of the skeleton assembly of the present invention (sitting posture).

Figure 3 is a diagram of the skeleton assembly of the present invention (lying down).

Figure 4 is a schematic diagram of the frame assembly of the present invention (excluding the armrest side panels).

Figure 5 is another viewing angle of Figure 4.

Figure 6 is a three-dimensional assembly diagram of the seat frame assembly, leg support frame assembly, and chair back frame assembly of the present invention.

Figure 7 is a 3D exploded view of Figure 6.

Figure 8 is an external view of the seat frame assembly, leg support assembly, and chair back frame assembly of the present invention (sitting posture).

Figure 9 is an inside view of the seat frame assembly, leg rest frame assembly, and chair back frame assembly of the present invention (sitting position).

Figure 10 is an inside view of the unfolded leg rest assembly of the present invention.

Figure 11 is a side view of the unfolded leg rest assembly of the present invention.

Figure 12 is a raised external view of the seat frame assembly, leg rest frame assembly, and backrest frame assembly of the present invention (lying position).

Figure 13 is a raised inner side view (lying position) of the seat frame assembly, leg rest frame assembly, and chair back frame assembly of the present invention.

Figure 14 is a three-dimensional assembly diagram of the foot pedal frame assembly of the present invention.

Figure 15 is a three-dimensional exploded view of the footrest assembly of the present invention.

Figure 16 is a reference diagram of the unfolded storage panel and armrest side panel of the present invention.

Figure 17 is a partially enlarged three-dimensional assembly diagram of the side panel positioning device of the present invention.

Figure 18 is a partially enlarged three-dimensional exploded view of the side panel positioning device of the present invention.

Figure 19 is a three-dimensional assembly diagram of the caster positioning device of the present invention.

In order to enable the review committee to have a deeper understanding and knowledge of the purpose, features and effects of this creation, please list the following examples in conjunction with the [Simple Diagram Description] and explain them in detail as follows:

First, as shown in Figures 1 to 13, this invention is a sitting and lying angle adjustment mechanism for a rehabilitation medical chair, including:

A main frame 10 is placed on the ground and has two parallel side frames 101. A lifting guide plate 11 is fixed at the middle position of the inner side of the two side frames 101, and a rotating caster device 12 is set at the front and rear ends of each side frame. A main rotating rod 13 is connected between the two side frames 101, and a first fixed base frame 14 and a second fixed base frame 15 are fixedly connected. The lifting guide plate 11 is provided with a first elongated groove 5 and a second elongated groove 6. The main rotating rod 13 is radially fixed with a There are two first pivot ears 131, and the other end of each first pivot ear 131 is pivotally connected to one end of a first swing rod 16, and the other end of each first swing rod 16 is axially pivotally connected to one end of a first fixed rod 17. The other end of the first fixed rod 17 is simultaneously fixedly connected to one end of a second fixed rod 18 and pivotally connected to one end of a second swing rod 19. In addition, a first synchronous connecting rod 161 is commonly fixedly connected between the two first swing rods 16, and a second synchronous connecting rod 181 is commonly fixedly connected between the two second fixed rods 18;

A telescopic damping actuator 20 includes at least a telescopic rod 21 and a motor device 22 that can drive the telescopic rod 21 to extend and retract. The motor device 22 is pivotally connected to the second fixed base frame 15. One end of the telescopic rod 21 is pivotally connected to and drives the main rotating rod 13 to rotate;

A seat assembly 30 comprises two parallel seats 31, wherein the middle section of each seat frame 31 is pivotally connected to the other end of the second swing rod 19 of the main frame 10 and the front end of a first driven rod 32, and the rear section of the first driven rod 32 is pivotally connected to one end of a third swing rod 33, and the other end of the third swing rod 33 is pivotally connected to the inner side of the lifting guide plate 11, and each seat frame 31 The rear position is pivoted with one end of a first link 34, the other end of the first link 34 is pivoted with one end of a second link 35, the other end of the second link 35 is pivoted to the outer side of the lifting guide plate 11, in addition, a third synchronous connecting rod 36 is fixedly connected between the two first driven rods 32, and a seat pad 1 is fixedly provided on the two seat frames 31;

A backrest frame assembly 40 is pivoted to the rear side of the seat frame assembly 30 and generates different swing angles with the seat frame assembly 30. It is mainly composed of two connecting members 41, one end of which is pivoted to the rear end of each seat frame 31, and the other end of each connecting member 41 is pivoted to one end of a fourth swing rod 42, and the other end of the fourth swing rod 42 is pivoted to the seat frame assembly The rear end of each first driven rod 32 of the member 30, and the top end of each connecting member 41 is respectively fixedly connected upward with a back frame 43. In addition, the tops of the two connecting members 41 are jointly provided with a support plate 45, and the second fourth swing rod 42 is jointly fixedly connected with a fourth synchronous connecting rod 44, and the two back frames 43 are jointly fixed with a backrest pad 2;

A leg rest frame assembly 50 is pivoted to the front side of the seat frame assembly 30 and swings, and generates different swinging angles with the seat frame assembly 30. It is mainly composed of two first swinging members 51 respectively pivoting the front end of each seat frame 31, the other end of the second fixing rod 18 of the main frame 10 and one end of a follower 52, and one end of a second swinging member 53. The other end of the second swinging member 53 pivots to the other end of the follower 52. In addition, a first leg rest pad 3 is fixedly provided on one side of the two first swinging members 51, and a second leg rest pad 4 is fixedly provided on one side of the two first follower members 52;

A lifting mechanism assembly 60 is mainly composed of a first outer swing rod 61 and a second outer swing rod 62, one end of which is respectively pivoted to the outer upper edge and the outer lower edge of each lifting guide plate 11. The other end of the first outer swing rod 61 is pivoted to the middle position of a linking member 63. The front end of the linking member 63 is pivoted to the second swing rod 19 of the main frame 10, and the rear end of the linking member 63 is pivoted to the second outer swing rod 19. At the other end of the side swing rod 62, the link 63 pivots the first link 34 of the seat frame assembly 30. In addition, the middle position of the first outer swing rod 61 and the lower edge of the lifting guide plate 11 are respectively connected to the two ends of a spring 64, and the inner side of the second outer swing rod 62 is convexly provided with two guide posts 65, and the two guide posts 65 are respectively moved in the first elongated groove 5 and the second elongated groove 6;

A foot pedal frame assembly 70 is arranged at the bottom of the main frame 10 and can be moved horizontally out of the front side of the main frame 10, wherein the foot pedal frame assembly 70 includes a pedal 71, a base frame 72, at least one slide bar 73, at least one bottom of a hollow sleeve 74 corresponding to the slide bar 73, and a plurality of rotating wheels 75. The rotating wheel 75 and the base frame 72 are arranged at the bottom of the pedal 71. One side of the base frame 72 is fixedly connected to the slide bar 73, and the hollow sleeve 74 is fixed to the first fixed base frame 14 and is provided for the slide bar 73 to pass through and slide forward and backward; two armrest side panels 80 are respectively arranged on the left and right sides of the main frame 10. The armrest side panel 80 is pivoted to the left and right sides of the main frame 10, and one end of the armrest side panel 80 is pivoted to the side frame 101 of the main frame 10 by a hinge device 84, so that the armrest side panel 80 can be pivoted outward horizontally. In addition, a storage plate 81 is pivoted on the outer side of the armrest side panel 80, so that the storage plate 81 can be folded down and parallel to the armrest side panel 80, or can be folded up and perpendicular to the armrest side panel 80, and a positioning member 82 is provided on the inner side of the armrest side panel 80, and a positioning hole 83 is provided on the positioning member 82; the two side panel positioning devices 90 are provided on each of the side frames 101, and control each of the armrest side panels 80 to position and close the left and right sides of the main frame 10, wherein the side The board positioning device 90 at least includes a control board 91, a hollow slide tube 92, and a positioning pin 93 which are combined with each other. The positioning pin 93 is sleeved inside the hollow slide tube 92. The control board 91 is connected to the positioning pin 93 and controls the upward and downward movement of the positioning pin 93, so that the positioning pin 93 moves upward and is inserted into the positioning hole 83 on the armrest side board 80; the two caster positioning devices 100 are respectively arranged at the two ends of the first fixed base frame 14 and are located below each of the side frames 101. A linkage rod 117 is connected between the two caster positioning devices 100 to synchronously link and control the rotation of the rotating caster devices 12 of the two side frames 101. The caster positioning device 100 is mainly composed of a swing pedal 110 axially fixedly connected to one end of a control cross rod 111, the other end of the control cross rod 111 is fixedly connected to one end of a fifth swing rod 112, the other end of the fifth swing rod 112 is pivotally connected to one end of a second driven rod 113, and the other end of the second driven rod 113 is fixedly connected to one end of a fifth swing rod 112. The predetermined position of a rocking rod 114 is hinged, and the two ends of the rocking rod 114 are each hinged to one end of a third driven rod 115, and the other end of the third driven rod 115 is hinged to one end of a fourth driven rod 116. The other end of each fourth driven rod 116 controls the rotation of the rotating caster device 12 at the front and rear ends of each side frame 101.

Based on the above structure and assembly design, the usage of each main component of the present invention is described as follows:

(I) First, regarding the linkage between the telescopic damping actuator 20, the seat frame assembly 30, the seat back frame assembly 40, and the leg rest frame assembly 50:

1. As shown in Figures 8 and 9, when the user is sitting, it is a normal state. The seat frame assembly 30 (seat cushion 1) and the chair back frame assembly 40 (back cushion 2), and the seat frame assembly 30 (seat cushion 1) and the first swinging member 51 (first leg cushion 3) of the leg rest frame assembly 50 are all at a vertical angle, and the follower 52 (second leg cushion 4) of the leg rest frame assembly 50 is folded inward to the bottom of the seat cushion 1.

2. As shown in Figures 10 and 11, when the user uses the lying position, the telescopic rod 21 of the telescopic damping driver 20 drives the main rotating rod 13 to rotate, and drives the first swing rod 16 to push the second fixed rod 18 forward (at the same time, the second swing rod 19 swings and causes the seat frame assembly 30 (seat cushion 1) to move backward), so that the first swing member 51 (first leg cushion 3) and the follower 52 (second leg cushion 4) rotate and swing upward until the second fixed rod 18 and the second swing member 53 are in a straight line with each other, and the first swing member 51 (first leg cushion 3) and the follower 52 (second leg cushion 4) are unfolded.

3. Then, as shown in FIGS. 12 and 13, the telescopic rod 21 continues to drive the main rotating rod 13 to rotate, and the hinge 131 continues to push the first swing rod 16 upward, so that the seat frame assembly 30 (seat cushion 1) and the leg rest frame assembly 50 (first leg rest cushion 3, second leg rest cushion 4) rise at the same time; at the same time, the first outer swing rod 61 and the second outer swing rod 62 swing corresponding to the lifting guide plate 11, and the second outer swing rod 61 and the second outer swing rod 62 swing corresponding to the lifting guide plate 11. The guide post 65 of the movable rod 62 moves upward along the first elongated groove 5 and the second elongated groove 6. At the same time, when the seat frame assembly 30 (seat cushion 1) rises, the connecting member 41 pivoted at the rear end of the seat frame 31 can swing backward, allowing the chair back frame assembly 40 (back cushion 2) to tilt further backward, so that the back cushion 2, seat cushion 1, first leg cushion 3, and second leg cushion 4 can be adjusted as a whole to lie flat.

3. Therefore, when the seat frame assembly 30 (seat cushion 1) needs to be lowered or even restored to a sitting position, the telescopic rod 21 of the telescopic damping actuator 20 can be used to reversely drive the main rotating rod 13 to rotate in the opposite direction, and link the above-mentioned components to move in the opposite direction.

(ii) Regarding the use of the armrest side panel 80:

As shown in Figures 16 to 18, since each of the armrest side panels 80 is pivoted with the side frame 101 of the main frame 10 by a hinge device 84, the armrest side panels 80 can be pivoted outward horizontally and opened. In addition, when closing the armrest side panels 80, the control panel 91 of the side panel positioning device 90 can be stepped on, and the positioning pin 93 inside the hollow slide tube 92 can be controlled to move upward and inserted into the positioning hole 83 of the inner positioning member 82 of the armrest side panel 80, so as to position the armrest side panel 80 to prevent the armrest side panel 80 from swinging sideways at will.

(III) Regarding the use of the caster positioning device 100:

1. First, as shown in FIG. 19, it is to be noted that there are many ways to achieve the actual detailed structural form of each fourth driven rod 116 controlling each rotating caster device 12, which is not the focus of the present invention. The focus of the invention of this assembly is the continuous linkage state between the various parts in the caster positioning device 100.

2. When the swing pedal 110 is stepped on, the control crossbar 111 rotates and sequentially links the fifth swing rod 112, the second driven rod 113, and the swing rod 114. The swing rod 114 then sequentially links the third driven rod 115 and the fourth driven rod 116 at both ends, and then the fourth driven rod 116 controls the locking of each rotating caster device 12 so that it does not rotate. When the swing pedal 110 is stepped on again, the rotating caster device 12 can be released and can rotate freely.

3. Finally, the two caster positioning devices 100 are synchronously linked via the linkage rod 117, and can simultaneously control the rotation of the four sets of rotating caster devices 12.

(IV) Regarding the use of the foot pedal frame assembly 70:

As shown in Figures 14 and 15, the pedal 71 can be held and pulled outward, so that the two slide bars 73 can slide out synchronously through the hollow sleeves 74; at the same time, with the plurality of rotating wheels 75, the pedal 71 can be moved and pulled out of the front side of the rehabilitation medical chair more smoothly; on the contrary, when the foot pedal frame assembly is not needed, the pedal 71 can be held and pushed back to the bottom of the main frame 10.

The following benefits can be obtained by using the structure of the above specific implementation example:

(I) The rehabilitation medical chair of the present invention can be controlled and adjusted to a sitting mode, a lying mode, and a rising and falling mode after lying down according to the needs of the user, that is,

1. When the user is sitting, it is a normal state. The seat frame assembly 30 (seat cushion 1) and the chair back frame assembly 40 (back cushion 2), and the seat frame assembly 30 (seat cushion 1) and the first swinging member 51 (first leg cushion 3) of the leg cushion assembly 50 are all at a vertical angle, and the follower 52 (second leg cushion 4) is folded inward to the bottom of the seat frame assembly 30 (seat cushion 1).

2. When the user uses the lying position, the chair back frame assembly 40 (back cushion 2) tilts backward, and the first swing member 51 (first leg cushion 3) and the follower member 52 (second leg cushion 4) of the leg cushion assembly 50 unfold toward the front side of the rehabilitation medical chair, so that the back cushion 2, seat cushion 1, first leg cushion 3, and second leg cushion 4 are adjusted as a whole to lie flat.

Thus, the present invention utilizes the electric telescopic damping drive 20 to integrally connect the actuation adjustment method, thereby achieving the effect of rapid adjustment and providing the convenience of effective use.

(ii) The armrest side panel 80 can be pivoted outward horizontally to allow the user to easily move sideways from the side of the rehabilitation medical chair. In addition, when the armrest side panel 80 is closed, the side panel positioning device 90 can be used to position the armrest side panel 80 to prevent the armrest side panel 80 from swinging sideways at will, thereby achieving safety in the use of the armrest side panel 80.

(III) The armrest side panels 80 on both sides of the rehabilitation medical chair can be folded upward to form the storage panels 81 for placing items; when the user does not need to use the storage panels 81, the armrest side panels 80 can be folded downward to achieve convenience and practicality.

(IV) Stepping on the caster positioning device 100 can synchronously control the four sets of rotating caster devices 12 to stop rotating. Stepping on the caster positioning device 100 again can synchronously release the rotating caster device 12, so that the rotating caster device 12 can rotate freely. At the same time, no matter when stepping on the caster positioning device 100 on either side of the rehabilitation medical chair, the four sets of rotating caster devices 12 can be synchronously controlled, so as to achieve practicality and safety.

(V) When the user uses the rehabilitation medical chair, the footrest frame assembly 70 can be moved and pulled out to the front side of the rehabilitation medical chair for the user to step on, thereby enhancing the added value of the rehabilitation medical chair and making the user feel at home.

In summary, the present invention can effectively solve the shortcomings of knowledge creation and can be easily understood and implemented by ordinary knowledgeable people in the relevant technical field. However, the above is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention; that is, all equivalent changes and modifications made according to the scope of the patent application of the present invention should still be within the scope of the patent of the present invention.

101: Side frame

11: Lifting guide plate

12: Rotating caster device

161: First synchronous connecting rod

181: Second synchronous connecting rod

30: Seat assembly

31: Seat frame

40: Seat back frame assembly

43: Backrest

45: Support plate

51: First swing member

70: Footrest assembly

71: Pedaling

73: Slider

75: Rotating wheel

80: Armrest side panel

90: Side panel positioning device

100: Caster positioning device

110: Swing the pedal

Claims (10)

A sitting and lying angle adjustment mechanism for a rehabilitation medical chair, comprising: A main frame is placed on the ground and has two parallel corresponding side frames. A lifting guide plate is fixed at the middle position of the inner side of the two side frames, and a rotating caster device is provided at the front and rear ends of the two side frames. A main rotating rod is pivoted between the two side frames, and a first fixed base frame and a second fixed base frame are fixedly connected. The lifting guide plate is provided with a first elongated groove and a second elongated groove. Two first swing rods are radially pivoted on the main rotating rod, and the other end of each first swing rod is axially pivoted to one end of a first fixed rod. The other end of the first fixed rod is simultaneously fixed to one end of a second fixed rod and pivoted to one end of a second swing rod; A telescopic damping actuator is pivotally connected to the second fixed base frame at one end, and the other end is pivotally connected to and drives the main rotating rod to rotate; A seat frame assembly has two parallel seats, the middle section of each seat frame is simultaneously pivoted to the other end of the second swing rod of the main frame and the front end of a first driven rod, the rear section of the first driven rod is pivoted to one end of a third swing rod, the other end of the third swing rod is pivoted to the inner side of the lifting guide plate, and the rear section of each seat frame is pivoted to one end of a first linking member, the other end of the first linking member is pivoted to one end of a second linking member, the other end of the second linking member is pivoted to the outer side of the lifting guide plate; A chair back frame assembly is pivoted to the rear side of the seat frame assembly and swings, and generates different swinging angles with the seat frame assembly. It is mainly composed of two connecting parts, one end of which is pivoted to the rear end of each seat frame, and the other end of each connecting part is pivoted to one end of a fourth swing rod, and the other end of the fourth swing rod is pivoted to the rear end of each first driven rod of the seat frame assembly, and the top end of each connecting part is fixedly connected to a back frame upward; A leg rest assembly is pivoted to the front side of the seat frame assembly and swings, and generates different swinging angles with the seat frame assembly. It is mainly composed of two first swinging members respectively pivoting the front end of each seat frame, the other end of the second fixing rod of the main frame and one end of a follower, and one end of a second swinging member, and the other end of the second swinging member is pivoted to the other end of the follower; A lifting mechanism assembly, which is mainly composed of a first outer swing rod and a second outer swing rod, one end of which is respectively pivoted to the outer upper edge and the outer lower edge of each lifting guide plate, the other end of the first outer swing rod is pivoted to the middle section of a connecting member, the front end of the connecting member is pivoted to the second swing rod of the main frame, and the rear end of the connecting member is pivoted to the second The other end of the outer swing rod, at the same time, the link is pivotally connected to the first link of the seat frame assembly. In addition, the middle position of the first outer swing rod and the lower edge of the lifting guide plate are respectively connected to the two ends of a spring, and the inner side of the second outer swing rod is convexly provided with two guide posts, and the two guide posts are moved in the first elongated groove and the second elongated groove respectively; A foot pedal frame assembly is disposed at the bottom of the main frame and can be moved horizontally out of the front side of the main frame; The two armrest side panels are respectively arranged on the left and right sides of the main frame, and one end of each armrest side panel is pivoted to the side frame of the main frame so that the armrest side panel can pivot outward horizontally; The two side panel positioning devices are installed on each side frame and control each armrest side panel to position and close the left and right sides of the main frame; The two caster positioning devices are respectively arranged at the two ends of the first fixed base frame and located below each of the side frames, and are linked to control the rotation of the rotating caster devices of each of the side frames. According to the sitting and lying angle adjustment mechanism of the rehabilitation medical chair described in Item 1 of the patent application scope, two first hinges are radially fixed on the main rotating rod, and the other end of each first hinge is hinged to one end of each first swing rod. According to the sitting and lying angle adjustment mechanism of the rehabilitation medical chair described in Item 1 of the patent application scope, the telescopic damping driver at least includes a telescopic rod that is mutually coupled and a motor device that can drive the telescopic rod to extend and retract. The motor device is pivotally connected to the second fixed base frame, and one end of the telescopic rod is pivotally connected to the main rotating rod. According to the sitting and lying angle adjustment mechanism of the rehabilitation medical chair described in Item 1 of the patent application scope, a support plate is jointly mounted on the top of the two connecting parts. According to the sitting and lying angle adjustment mechanism of the rehabilitation medical chair described in Item 1 of the patent application, the foot pedal frame assembly includes a pedal, a base frame, at least one slide bar, at least one hollow sleeve bottom corresponding to the slide bar, and a plurality of rotating wheels. The rotating wheel and the base frame are arranged at the bottom of the pedal. One side of the base frame is fixed to the slide bar, and the hollow sleeve is fixed to the first fixed base frame and allows the slide bar to pass through and slide forward and backward. According to the sitting and lying angle adjustment mechanism of the rehabilitation medical chair described in Item 1 of the patent application scope, one end of each armrest side panel is connected to each side frame through a hinge device. According to the sitting and lying angle adjustment mechanism of the rehabilitation medical chair described in Item 1 of the patent application scope, a storage board is provided on the outer side of the armrest side panel, so that the storage board can be folded down and parallel to the armrest side panel, or can be folded up and perpendicular to the armrest side panel. According to the sitting and lying angle adjustment mechanism of the rehabilitation medical chair described in Item 1 of the patent application, a positioning piece is provided on the inner side of the armrest side panel, and the positioning piece has a positioning hole, and the side panel positioning device includes at least a control panel, a hollow slide tube, and a positioning pin that are combined with each other. The positioning pin is sleeved inside the hollow slide tube, and the control panel is connected to the positioning pin and controls the upward and downward movement of the positioning pin, so that the positioning pin moves upward and is inserted into the positioning hole on the armrest side panel. According to the sitting and lying angle adjustment mechanism of the rehabilitation medical chair described in Item 1 of the patent application, the caster positioning device is mainly composed of a swing pedal axially fixed to one end of a control crossbar, the other end of the control crossbar is fixed to one end of a fifth swing rod, the other end of the fifth swing rod is pivoted to one end of a second driven rod, the other end of the second driven rod is pivoted to a predetermined position of a swing rod, the two ends of the swing rod are each pivoted to one end of a third driven rod, the other end of the third driven rod is pivoted to one end of a fourth driven rod, and the other end of each fourth driven rod controls the rotation of the rotating caster device at the front and rear ends of each side frame. According to the sitting and lying angle adjustment mechanism of the rehabilitation medical chair described in Item 1 of the patent application scope, a linkage rod is connected between the two caster positioning devices to synchronously control the rotation of the two rotating caster devices of the side frames.

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