Nursing seat with standing assisting function

Abstract

The invention discloses a nursing seat with a standing assisting function, which comprises a seat main body, support frames and a lifting frame, the lifting frame is located at the lower part of the seat main body and can drive the seat main body to lift up and down, the support frames are located at two sides of the seat main body, the support frames at two sides are connected through a bottom plate, and the bottom plate is located below the lifting frame; the seat body comprises a cushion, a backrest and a leg support are hinged to the two sides of the cushion respectively, the lower portion of the leg support is fixedly connected with the upper portion of a lifting frame, the backrest is connected with the lifting frame through a second lifter, a hinged support is arranged on the back of the backrest, and a connecting plate is connected to the lower portion of the lifting frame and located above the bottom plate. And one end of the second lifter is hinged with the connecting plate and the other end is hinged with the hinged support. By arranging the second lifter, the angle adjustment of the backrest can be realized, and the inclination of the seat cushion can be realized, so that the chair has a standing assisting function.

Description

Technical Field

[0001] The present invention relates to a nursing chair, and more particularly to a nursing chair with a lifting assistance function. Background Art

[0002] Existing chairs generally do not have an assist function, which is inconvenient for people with limited mobility, such as the elderly and pregnant women. Pregnant women find it difficult to exert force on their waist and abdomen when getting up, and often need to support their bodies with both hands on the armrests to get up, which is very strenuous. Therefore, there is an urgent need to design a chair that can assist in getting up. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a nursing chair with an assist-to-lift function. By setting a second lifter, it is possible to adjust the angle of the backrest and tilt the seat cushion, thereby giving it an assist-to-lift function.

[0004] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a nursing chair with an assist-to-lift function, comprising a seat body, a support frame and a lifting frame, wherein the lifting frame is located at the lower part of the seat body and can drive the seat body to move up and down, the support frames are located on both sides of the seat body, and the support frames on both sides are connected by a bottom plate, and the bottom plate is located below the lifting frame;

[0005] The seat body includes a seat cushion, with a backrest and a leg rest hinged on both sides of the seat cushion, the lower part of the leg rest being fixedly connected to the upper part of the lifting frame, the backrest and the lifting frame being connected via a second lifter, a hinge seat being provided on the back of the backrest, a connecting plate being connected to the lower part of the lifting frame, the connecting plate being located above the bottom plate, one end of the second lifter being hinged to the connecting plate and the other end being hinged to the hinge seat;

[0006] The second lifter can be retracted to rotate the backrest counterclockwise around the hinge point with the seat cushion as the axis, and the second lifter can be extended to rotate the backrest clockwise around the hinge point with the seat cushion as the axis, so that the seat cushion can be rotated clockwise around the hinge point with the leg support as the axis, so that the seat cushion can be separated from the lifting frame.

[0007] Furthermore, a footrest is provided below the seat body, and a third lifter is fixed to the lower portion of the lifting frame, and the third lifter can drive the footrest to move up and down.

[0008] Furthermore, the two support frames are connected by a first cross bar, the first cross bar is located below the lifting frame, a first guide column is connected between the first cross bar and the base plate, and a guide sleeve is provided on the side of the footrest, and the guide sleeve is arranged on the outside of the first guide column and can slide up and down along the first guide column.

[0009] Furthermore, an armrest is provided on the upper portion of the support frame, a first sensing area is provided on the surface of the armrest, and a second sensing area is provided on the upper surface of the footrest.

[0010] Furthermore, a hydraulic rod is hinged to the upper portion of the first cross bar, the other end of the hydraulic rod is hinged to the lower portion of the leg support, and the hydraulic rod is located on both sides of the third lifter.

[0011] Furthermore, the two support frames are connected by a second cross bar, the second cross bar is located between the seat cushion and the second lifter, the side of the second lifter can abut against or detach from the second cross bar, the support frame is provided with a support rod on one side of the backrest, the back of the backrest can abut against or detach from the support rod, a support plate is fixed inside the lifter, a first lifter is fixed on the upper part of the bottom plate, and the telescopic end of the first lifter is connected to the support plate.

[0012] Furthermore, a locking mechanism is fixed to the upper part of the base plate, and a lifting column is provided at the lower part of the lifting frame. The locking mechanism includes a first guide groove and a plurality of locking units arranged along its height direction. The lower end of the lifting column is inserted into the first guide groove and can move up and down along the first guide groove. The lifting column can pass over the locking unit or abut against the locking unit.

[0013] Furthermore, the locking mechanism includes a mounting groove corresponding to the locking unit, the locking unit is installed in the mounting groove, and three second guide grooves are provided on the side of the mounting groove facing the first guide groove, the locking unit includes a first movable member and a second movable member, the first movable member includes a first movable head and a second movable head, the second movable member includes a third movable head, the first movable head, the second movable head and the third movable head are all located in the corresponding second guide groove and can be inserted into the first guide groove, the third movable head is located between the first movable head and the second movable head, the distance the first movable head is inserted into the first guide groove is smaller than the distance the third movable head is inserted into the first guide groove, and the distance the third movable head is inserted into the first guide groove is smaller than the distance the second movable head is inserted into the first guide groove;

[0014] The lifting column can sequentially pass over the first movable head, the third movable head and the second movable head from top to bottom, and the lifting column can pass over the first movable head and abut against the third movable head or the second movable head from top to bottom.

[0015] Furthermore, the first movable member further includes a first connecting piece, wherein the first connecting piece is respectively provided with connecting columns near both ends, the two connecting columns are symmetrical with the third movable head as the center, the ends of the two connecting columns are respectively connected to the first movable head and the second movable head, the first movable head and the second movable head are both provided with guide ribs on the outside, the guide ribs can move along the second guide groove, the third movable head is provided with a second connecting piece on a side away from the first guide groove, the two connecting columns respectively penetrate the second connecting piece, and the outer sides of the two connecting columns are both sleeved with a first spring, one end of the first spring abuts the guide rib and the other end abuts the second connecting piece;

[0016] A guide platform is provided on a side of the first connecting piece away from the third movable head, a third guide groove is provided in the guide platform, a second spring is provided in the third guide groove, and a second guide post is provided on a side of the second connecting piece facing the guide platform, the second guide post is inserted into the third guide groove and abuts against one end of the second spring;

[0017] The first movable head and the second movable head move synchronously, the first spring can push the second movable member to move, and the second spring can push the first movable member to move.

[0018] Furthermore, the locking unit also includes a cover body, which is fixedly connected to the mounting groove, and an annular rib is provided inside the cover body, and the guide platform is inserted into the annular rib. A third spring is provided on the outside of the annular rib, and one end of the third spring abuts against the side of the first connecting piece. The elastic force of the first spring is consistent with the elastic force of the second spring and is greater than the elastic force of the third spring.

[0019] In summary, the present invention has the following beneficial effects:

[0020] When the user needs to stand, the second lifter works to rotate the backrest clockwise until the side of the second lifter abuts the second cross bar. At this time, the backrest is perpendicular to the seat cushion. Then the second lifter continues to extend. Since the position of the second lifter is limited by the second cross bar, the backrest can be lifted by the second lifter. The backrest pulls the seat cushion to rotate clockwise around the hinge point with the leg rest as the axis, so that the seat cushion tilts, thereby putting the user in a semi-standing state, greatly reducing the physical strength used by the user when switching from a sitting position to a standing position, and achieving the effect of helping the user to stand up. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of this embodiment at a first viewing angle;

[0022] Figure 2 This is a schematic structural diagram of the embodiment at a second viewing angle;

[0023] Figure 3 is a schematic structural diagram of this embodiment from a third viewing angle;

[0024] Figure 4 This is a schematic diagram of the first state of this embodiment;

[0025] Figure 5 This is a schematic diagram of the second state of this embodiment;

[0026] Figure 6 This is a schematic diagram of the third state of this embodiment;

[0027] Figure 7 is a sectional view of the side view of this embodiment;

[0028] Figure 8 for Figure 7 A partial schematic diagram of

[0029] Figure 9 is a schematic diagram of the locking unit in the first state;

[0030] Figure 10 is a schematic diagram of the locking unit in the second state;

[0031] Figure 11 is a schematic diagram of the locking unit in the third state;

[0032] Figure 12 Schematic diagram of the locking unit in the fourth state.

[0033] Figure numerals: 1, seat body; 11, seat cushion; 12, backrest; 13, leg rest; 14, hinge seat; 2, support frame; 21, armrest; 22, first sensing area; 23, bottom plate; 24, support rod; 25, first cross bar; 26, first guide column; 27, hydraulic rod; 28, second cross bar; 3, lifting frame; 31, support plate; 32, connecting plate; 33, first lifter; 34, lifting column; 4, second lifter; 5, footrest; 51, guide sleeve; 52, third lifter; 53, second sensing area; 6, lock Mechanism; 61. first guide groove; 62. mounting groove; 63. second guide groove; 64. cover body; 65. annular rib; 7. locking unit; 71. first spring; 72. second spring; 73. third spring; 8. first movable part; 81. first movable head; 82. second movable head; 83. guide rib; 84. first connecting piece; 85. connecting column; 86. guide platform; 87. third guide groove; 9. second movable part; 91. third movable head; 92. second connecting piece; 93. second guide column; 100. operating area. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1 to 3 As shown, this embodiment discloses a nursing chair with an assisting function, comprising a seat body 1, a support frame 2 and a lifting frame 3, wherein the lifting frame 3 is located at the lower part of the seat body 1 and can drive the seat body 1 to move up and down, the support frame 2 is located on both sides of the seat body 1, and the support frames 2 on both sides are connected by a bottom plate 23, and the bottom plate 23 is located below the lifting frame 3, the seat body 1 comprises a seat cushion 11, and a backrest 12 and a leg support 13 are hinged on both sides of the seat cushion 11, and the lower part of the leg support 13 is fixedly connected to the upper part of the lifting frame 3, and the leg support 13 is fixedly connected to the upper part of the lifting frame 3. The upper surface is higher than the upper surface of the seat cushion 11. This design not only improves the comfort of the user's legs, but also prevents the user from slipping from the seat cushion 11, which is beneficial to improving the user experience. A support plate 31 is fixed inside the lifting frame 3, and a first lifter 33 is fixed on the upper part of the bottom plate 23. The telescopic end of the first lifter 33 is connected to the support plate 31. Through the first lifter 33, the lifting frame 3 and the seat body 1 can be driven up and down, so that the distance between the seat cushion 11 and the ground can be adjusted to meet the needs of users of different heights.

[0036] like Figures 2 to 7 As shown, the backrest 12 is connected to the lifting frame 3 through the second lifter 4. Specifically, a hinge seat 14 is provided on the back of the backrest 12, and a connecting plate 32 is connected to the lower part of the lifting frame 3. The connecting plate 32 is located above the bottom plate 23. One end of the second lifter 4 is hinged to the connecting plate 32 and the other end is hinged to the hinge seat 14. The two support frames 2 are connected by a second cross bar 28. The second cross bar 28 is located between the seat cushion 11 and the second lifter 4. The side of the second lifter 4 can abut against or disengage from the second cross bar 28. The second lifter 4 can retract to allow the backrest 12 to rotate counterclockwise around the hinge point with the seat cushion 11 as the axis. The second lifter 4 can extend to allow the backrest 12 to rotate clockwise around the hinge point with the seat cushion 11 as the axis, so that the seat cushion 11 can rotate clockwise around the hinge point with the leg support 13 as the axis, so that the seat cushion 11 can be separated from the lifting frame 3.

[0037] like Figure 4 As shown, when the seat body 1 is in the initial state, the distance from the ground is the shortest, and the angle between the backrest 12 and the seat cushion 11 is small, which is suitable for the user to sit upright. When the user sits on it, the first lifter 33 works to drive the seat body 1 to rise, adjust the height of the user's sitting position, and improve their comfort;

[0038] like Figure 5 As shown, when the user needs to lie down, the second lifter 4 works, the second lifter 4 contracts, the backrest 12 can rotate counterclockwise, the angle between the backrest 12 and the seat cushion 11 increases, and the user can lie down, and as shown in FIG. Figure 2 As shown, the support frame 2 is provided with a support rod 24 on one side of the backrest 12. The back of the backrest 12 can abut against or detach from the support rod 24. When the second lifter 4 is retracted to the extreme position, the back of the backrest 2 is close to the upper part of the support rod 24. If the second lifter 4 fails, the backrest 12 will fall and abut against the upper part of the support rod 24, thereby preventing the user from falling over, and having good safety.

[0039] like Figure 6 As shown, when the user needs to stand, the second lifter 4 works to rotate the backrest 12 clockwise until the side of the second lifter 4 abuts the second cross bar 28. At this time, the backrest 12 is perpendicular to the seat cushion 11 (this state is not shown in the figure). Then the second lifter 4 continues to extend. Since the position of the second lifter 4 is limited by the second cross bar 28, the backrest 12 can be lifted by the second lifter 4. The backrest 12 pulls the seat cushion 11 to rotate clockwise around the hinge point with the leg support 13 as the axis, so that the seat cushion 11 tilts, thereby putting the user in a semi-standing state, greatly reducing the physical strength used by the user when switching from a sitting position to a standing position, and achieving the effect of helping the user to stand up.

[0040] like Figure 1 and Figure 3 As shown, a footrest 5 is provided under the seat body 1, and a third lifter 52 is fixed to the lower part of the lifting frame 3. The third lifter 52 can drive the footrest 5 to move up and down. Specifically, the footrest 5 can be lifted and lowered synchronously with the lifting frame 3. The two support frames 2 are connected by a first cross bar 25, and the first cross bar 25 is located under the lifting frame 3. A first guide column 26 is connected between the first cross bar 25 and the bottom plate 23. A guide sleeve 51 is provided on the side of the footrest 5. The guide sleeve 51 is mounted on the outside of the first guide column 26 and can slide up and down along the first guide column 26. The footrest 5 is exposed on the side of the leg rest 13. When the user sits on the seat body 1, his feet are placed on the footrest 5, and the position height of the footrest 5 is adjusted by lifting and lowering the third lifter 52, thereby improving the user's comfort.

[0041] like Figure 1 As shown, when the seat body 1 is at the lowest position, the lower surface of the footrest 5 is in contact with the ground, and the lower part of the guide sleeve 51 is close to the upper surface of the base plate 23. When the seat body 1 is at the highest position, the guide sleeve 51 is located in the middle position of the first guide column 26, thereby ensuring that the footrest 5 has sufficient adjustment space.

[0042] When the user needs to stand up, the first lifter 33 and the third lifter 52 need to be reset to ensure that the seat cushion 11 is at the lowest position and the lower surface of the footrest 5 is in contact with the ground.

[0043] like Figure 1 As shown, an armrest 21 is provided on the upper portion of the support frame 2, and a first sensing area 22 is provided on the surface of the armrest 21, and a second sensing area 53 is provided on the upper surface of the footrest 5. Pressure-sensitive sensors are provided in the first sensing area 22 and the second sensing area 53. Before the user needs to use the assist function, the user needs to touch the two first sensing areas 22 with both hands to trigger the internal pressure-sensitive sensors, and touch the two second sensing areas 53 with both feet to trigger the internal pressure-sensitive sensors, to ensure that the user is in a correct sitting posture, to avoid improper sitting posture and falling during assisting, and an operating area 100 is also provided at the armrest 21, and the function buttons of the operating area 100 can be used to operate the first lifter 33, the second lifter 4 and the third lifter 52. The first lifter 33, the second lifter 4 and the third lifter 52 are all electric screw lifters, which are prior art.

[0044] like Figure 7 As shown, a hydraulic rod 27 is hinged on the upper part of the first cross bar 25, and the other end of the hydraulic rod 27 is hinged to the lower part of the leg rest 13. The hydraulic rod 27 is located on both sides of the third lifter 52. By setting the hydraulic rod 27, the connection between the leg rest 13 and the support frame 2 can be achieved, thereby improving the reliability of the structure, and will not affect the lifting and lowering of the leg rest 13.

[0045] like Figures 7 to 12 As shown, a locking mechanism 6 is fixed to the upper portion of the base plate 23, and a lifting column 34 is provided at the lower portion of the lifting frame 3. The locking mechanism 6 includes a first guide groove 61 and a plurality of locking units 7 arranged along the height direction thereof. The lower end of the lifting column 34 is inserted into the first guide groove 61 and can move up and down along the first guide groove 61. The lifting column 34 can pass over the locking unit 7 or abut against the locking unit 7.

[0046] Since the seat body 1 has a lifting function, and the users of this embodiment are mainly elderly people, pregnant women, etc. with limited mobility, a locking mechanism 6 is provided to prevent the seat body 1 from suddenly falling too far when the first lifter 33 fails during the lifting process, thereby reducing the risk of use.

[0047] Specifically, the locking mechanism 6 includes a mounting groove 62 corresponding to the locking unit 7, the locking unit 7 is installed in the mounting groove 62, and the mounting groove 62 is provided with three second guide grooves 63 on the side facing the first guide groove 61. The locking unit 7 includes a first movable member 8 and a second movable member 9, the first movable member 8 includes a first movable head 81 and a second movable head 82, and the second movable member 9 includes a third movable head 91. The first movable head 81, the second movable head 82 and the third movable head 91 are all located in the corresponding second guide groove 63 and can be inserted into the first guide groove 61. The third movable head 91 is located between the first movable head 81 and the second movable head 82. The distance of the first movable head 81 inserted into the first guide groove 61 is smaller than the distance of the third movable head 91 inserted into the first guide groove 61, and the distance of the third movable head 91 inserted into the first guide groove 61 is smaller than the distance of the second movable head 82 inserted into the first guide groove 61; the lifting column 34 is moved from top to bottom The lifting column 34 can pass over the first movable head 81, the third movable head 91 and the second movable head 82 in sequence. The lifting column 34 can pass over the first movable head 81 from top to bottom and abut the third movable head 91 or the second movable head 82. The first movable member 8 also includes a first connecting piece 84. The first connecting piece 84 is provided with a connecting column 85 near both ends. The two connecting columns 85 are symmetrical with the third movable head 91 as the center. The ends of the two connecting columns 85 are connected to the first movable head 81 and the second movable head 82 respectively. The first movable head 81 and the second movable head 82 are both provided with a guide rib 83 on the outside. The guide rib 83 can move along the second guide groove 63. The third movable head 91 is provided with a second connecting piece 92 on the side away from the first guide groove 61. The two connecting columns 85 respectively penetrate the second connecting piece 92. The outside of the two connecting columns 85 is provided with a first spring 71. One end of the first spring 71 abuts the guide rib 83 and the other end abuts the second connecting piece 92.

[0048] A guide platform 86 is provided on a side of the first connecting piece 84 away from the third movable head 91. A third guide groove 87 is provided in the guide platform 86. A second spring 72 is provided in the third guide groove 87. A second guide post 93 is provided on a side of the second connecting piece 92 facing the guide platform 86. The second guide post 93 is inserted into the third guide groove 87 and abuts against one end of the second spring 72.

[0049] The first movable head 81 and the second movable head 82 move synchronously, the first spring 71 can push the second movable part 9 to move, and the second spring 72 can push the first movable part 8 to move. The locking unit 7 also includes a cover body 64, and the cover body 64 is fixedly connected to the mounting groove 62. An annular rib 65 is provided inside the cover body 64, and the guide platform 86 is inserted into the annular rib 65. A third spring 73 is provided on the outside of the annular rib 65, and one end of the third spring 73 abuts the side of the first connecting piece 84. The elastic force of the first spring 71 is consistent with the elastic force of the second spring 72 and is greater than the elastic force of the third spring 73.

[0050] like Figures 9 to 11 The figure shows the cooperation between the lifting column 34 and the locking unit 7 when the seat body 1 is lowered normally. Figure 9 As shown, when the seat body 1 drives the lifting column 34 to slowly descend to the first movable head 81, the lifting column 34 can squeeze the first movable head 81 through the arc at the end of the first movable head 81 and push the first movable head 81 to move to the left. During this process, the second movable head 82 moves a distance to the left synchronously with the first movable head 81. When the first movable head 81 moves slowly to the left, it compresses the first spring 71, and the third movable head 91 can be pushed to the left a distance through the first spring 71. The third movable head 91 is pushed by the first spring 71, which will cause a movement delay. The lifting column 34 continues to descend. When the lifting column 34 passes over the first movable head 81, the arc on the upper surface of the third movable head 91 is located below the edge of the lifting column 34, as shown in FIG. Figure 10 As shown, the lifting column 34 continues to descend, and the lower part of the lifting column 34 abuts against the arc of the upper part of the third movable head 91 and squeezes the third movable head 91, causing the third movable head 91 to move leftward again. When the third movable head 91 moves leftward, it can compress the second spring 72, and the second spring 72 can push the first movable member 8 to move leftward. The second spring 72 pushes the first movable member 8 to move leftward, which also produces a movement delay, causing the first movable head 81 and the second movable head 82 to move leftward again by a distance; as shown Figure 11 As shown, the lifting column 34 continues to descend, and the lower part of the lifting column 34 will abut against the arc on the upper part of the second movable head 82 and squeeze the second movable head 82, so that the first movable head 81, the second movable head 82 and the third movable head 91 move to the left again. It can be seen that when the first lifter 33 works normally, the locking unit 7 will not affect the normal lifting of the seat body 1.

[0051] like Figure 12As shown, when the first lifter 33 fails, the seat body 1 drops rapidly, causing the lifting column 34 to drop rapidly as well. At this time, since the third movable head 91 is pushed by the first spring 71, a movement delay will occur. The second spring 72 pushes the first movable part 8 to move to the left, which will also cause a movement delay. When the lifting column 34 quickly squeezes and passes over the first movable head 81, due to the delay of the first spring 71, the third movable head 91 has not moved a distance yet, and the lower end of the lifting column 34 abuts against the plane of the upper surface of the third movable head 91. At this time, the third movable head 91 is affected by the gravity of the lifting column 34 and can no longer move to the left, thereby achieving locking. If the third movable head 91 fails to lock, it can also be locked by the second movable head 82, thereby greatly improving safety.

[0052] By providing the third spring 73 , the first movable member 8 and the second movable member 9 can be reset.

[0053] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A nursing chair with an assistive function, characterized in that: The invention comprises a seat body (1), a support frame (2) and a lifting frame (3), wherein the lifting frame (3) is located at the lower part of the seat body (1) and can drive the seat body (1) to move up and down, and the support frame (2) is located on both sides of the seat body (1). The support frames (2) on both sides are connected by a bottom plate (23), and the bottom plate (23) is located below the lifting frame (3); The seat body (1) includes a seat cushion (11), and a backrest (12) and a leg support (13) are hinged on both sides of the seat cushion (11), the lower part of the leg support (13) is fixedly connected to the upper part of the lifting frame (3), the backrest (12) and the lifting frame (3) are connected through a second lifter (4), the back of the backrest (12) is provided with a hinge seat (14), the lower part of the lifting frame (3) is connected to a connecting plate (32), the connecting plate (32) is located above the bottom plate (23), one end of the second lifter (4) is hinged to the connecting plate (32) and the other end is hinged to the hinge seat (14); The second lifter (4) can be retracted to allow the backrest (12) to rotate counterclockwise around the hinge point with the seat cushion (11) as the axis, and the second lifter (4) can be extended to allow the backrest (12) to rotate clockwise around the hinge point with the seat cushion (11) as the axis, so that the seat cushion (11) can rotate clockwise around the hinge point with the leg support (13) as the axis, so that the seat cushion (11) can be separated from the lifting frame (3).

2. The nursing chair with assist function according to claim 1, characterized in that: A footrest (5) is provided below the seat body (1), and a third lifter (52) is fixed to the lower portion of the lifting frame (3), and the third lifter (52) can drive the footrest (5) to move up and down.

3. The nursing chair with assist function according to claim 2, characterized in that: The two support frames (2) are connected by a first cross bar (25), the first cross bar (25) is located below the lifting frame (3), a first guide column (26) is connected between the first cross bar (25) and the bottom plate (23), and a guide sleeve (51) is provided on the side of the footrest (5), and the guide sleeve (51) is sleeved on the outside of the first guide column (26) and can slide up and down along the first guide column (26).

4. The nursing chair with an assist function according to claim 3, characterized in that: An armrest (21) is provided on the upper portion of the support frame (2), a first sensing area (22) is provided on the surface of the armrest (21), and a second sensing area (53) is provided on the upper surface of the footrest (5).

5. The nursing chair with assist function according to claim 3, characterized in that: The upper portion of the first crossbar (25) is hinged with a hydraulic rod (27), the other end of the hydraulic rod (27) is hinged with the lower portion of the leg support (13), and the hydraulic rod (27) is located on both sides of the third lifter (52).

6. The nursing chair with an assist function according to claim 1, characterized in that: The two support frames (2) are connected by a second cross bar (28), the second cross bar (28) is located between the seat cushion (11) and the second lifter (4), and the side of the second lifter (4) can abut against or detach from the second cross bar (28). The support frame (2) is provided with a support rod (24) on one side of the backrest (12), and the back of the backrest (12) can abut against or detach from the support rod (24). A support plate (31) is fixed inside the lifter (3), and a first lifter (33) is fixed on the upper part of the bottom plate (23), and the telescopic end of the first lifter (33) is connected to the support plate (31).

7. The nursing chair with an assist function according to claim 1, characterized in that: A locking mechanism (6) is fixed to the upper portion of the base plate (23); a lifting column (34) is provided at the lower portion of the lifting frame (3); the locking mechanism (6) comprises a first guide groove (61) and a plurality of locking units (7) arranged along its height direction; the lower end of the lifting column (34) is inserted into the first guide groove (61) and can move up and down along the first guide groove (61); the lifting column (34) can pass over the locking unit (7) or abut against the locking unit (7).

8. The nursing chair with assist function according to claim 7, characterized in that: The locking mechanism (6) includes a mounting groove (62) corresponding to the locking unit (7), the locking unit (7) is installed in the mounting groove (62), and the mounting groove (62) is provided with three second guide grooves (63) on the side facing the first guide groove (61). The locking unit (7) includes a first movable member (8) and a second movable member (9), the first movable member (8) includes a first movable head (81) and a second movable head (82), the second movable member (9) includes a third movable head (91), the first movable head (81) and the second movable head (82) are respectively (82) and the third movable head (91) are both located in the corresponding second guide groove (63) and can be inserted into the first guide groove (61), the third movable head (91) is located between the first movable head (81) and the second movable head (82), the distance of the first movable head (81) inserted into the first guide groove (61) is smaller than the distance of the third movable head (91) inserted into the first guide groove (61), and the distance of the third movable head (91) inserted into the first guide groove (61) is smaller than the distance of the second movable head (82) inserted into the first guide groove (61); The lifting column (34) can sequentially pass over the first movable head (81), the third movable head (91) and the second movable head (82) from top to bottom, and the lifting column (34) can pass over the first movable head (81) and abut against the third movable head (91) or the second movable head (82) from top to bottom.

9. The nursing chair with an assisting function according to claim 8, characterized in that: The first movable member (8) further comprises a first connecting piece (84), wherein connecting posts (85) are respectively provided near both ends of the first connecting piece (84), and the two connecting posts (85) are symmetrical with the third movable head (91) as the center, and the ends of the two connecting posts (85) are respectively connected to the first movable head (81) and the second movable head (82), and the first movable head (81) and the second movable head (82) are both provided with guide ribs (83) on the outside, and the guide ribs (83) can move along the second guide groove (63), and the third movable head (91) is provided with a second connecting piece (92) on the side away from the first guide groove (61), and the two connecting posts (85) respectively pass through the second connecting piece (92), and the outer sides of the two connecting posts (85) are both sleeved with first springs (71), and one end of the first spring (71) abuts against the guide rib (83) and the other end abuts against the second connecting piece (92); A guide platform (86) is provided on a side of the first connecting piece (84) away from the third movable head (91), a third guide groove (87) is provided in the guide platform (86), a second spring (72) is provided in the third guide groove (87), a second guide column (93) is provided on a side of the second connecting piece (92) facing the guide platform (86), the second guide column (93) is inserted into the third guide groove (87) and abuts against one end of the second spring (72); The first movable head (81) and the second movable head (82) move synchronously, the first spring (71) can push the second movable member (9) to move, and the second spring (72) can push the first movable member (8) to move.

10. The nursing chair with an assisting function according to claim 9, characterized in that: The locking unit (7) further comprises a cover body (64), the cover body (64) being fixedly connected to the mounting groove (62), an annular rib (65) being provided inside the cover body (64), the guide platform (86) being inserted into the annular rib (65), a third spring (73) being sleeved on the outside of the annular rib (65), one end of the third spring (73) being in contact with the side surface of the first connecting piece (84), the elastic force of the first spring (71) being consistent with the elastic force of the second spring (72) and being greater than the elastic force of the third spring (73).

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