Auxiliary chair

Abstract

The invention discloses an auxiliary chair. The auxiliary chair comprises a seat cushion, a chair seat and a chair body, the cushion is rotatably connected with the supporting legs; the electric driving device is arranged between the supporting leg and the cushion, and the electric driving device is used for driving the cushion to rotate around a first axis relative to the supporting leg; the manual turnover device comprises an auxiliary rod and a cam, the auxiliary rod is rotatably arranged on the supporting leg, the auxiliary rod is fixedly sleeved with the cam, and the outer edge of the cam is suitable for abutting against the cushion; wherein the cushion is suitable for being connected with the backrest, the position, abutting against the cushion, of the outer edge of the cam is located on the side, close to the backrest, of the centroid of the cushion, the joint of the auxiliary rod and the cam and the centroid of the cam are arranged in a staggered mode, and the auxiliary rod is suitable for rotating relative to the supporting leg so that the cam can drive the cushion to incline forwards. The auxiliary chair disclosed by the invention can be suitable for various use scenes, so that the auxiliary chair can be conveniently used by people needing to be nursed.

Description

Technical Field

[0001] The present application relates to the technical field of seats, and in particular to an auxiliary chair. Background Art

[0002] In the related art, some elderly people or people who need care due to physical reasons often find it difficult to complete actions such as sitting down, standing up, and moving on their own. Therefore, auxiliary chairs such as assisted standing wheelchairs or nursing chairs are needed to assist such people in completing actions such as moving and standing. However, most of the existing auxiliary chairs are driven by motors. If the motor is damaged or there is a power outage, it will be difficult for the person who needs care to complete actions such as standing independently, which is inconvenient for the person who needs care to use. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an auxiliary chair whose electric drive device and manual flip device can also be used simultaneously, so that the auxiliary chair can be applied to a variety of usage scenarios, thereby facilitating the use of the person who needs care.

[0004] The auxiliary chair according to the embodiment of the present application includes: a seat cushion; a support leg, the seat cushion is rotatably connected to the support leg; an electric drive device, the electric drive device is arranged between the support leg and the seat cushion, and the electric drive device is used to drive the seat cushion to rotate around a first axis relative to the support leg; a manual flipping device, the manual flipping device includes an auxiliary rod and a cam, the auxiliary rod is rotatably arranged on the support leg, the cam is fixedly sleeved on the auxiliary rod, and the outer edge of the cam is suitable for abutting against the seat cushion; wherein, the seat cushion is suitable for being connected to a backrest, and the position where the outer edge of the cam abuts against the seat cushion is located on the side of the centroid of the seat cushion close to the backrest, the connection between the auxiliary rod and the cam is offset from the centroid of the cam, and the auxiliary rod is suitable for rotating relative to the support leg so that the cam drives the seat cushion to tilt forward.

[0005] According to the auxiliary chair described in the embodiment of the present application, the seat cushion can be driven by an electric drive device to rotate around the first axis relative to the support leg, so that the seat cushion can be flipped over to assist the person who needs care to complete the standing action independently. At the same time, when the electric drive device fails, the auxiliary rod can be rotated to make the cam drive the seat cushion to tilt forward, thereby assisting the person who needs care to complete the standing action independently. Of course, the electric drive device and the manual flipping device can also be used at the same time. In this way, the auxiliary chair can be suitable for a variety of usage scenarios, thereby facilitating the use of people who need care.

[0006] According to the auxiliary chair described in some embodiments of the present application, the cam includes an eccentric cam, and the eccentric cam is provided with a first end and a second end, the end at which the edge of the eccentric cam is at the smallest distance from the connection between the auxiliary rod and the eccentric cam is the first end, and the end at which the edge of the eccentric cam is at the largest distance from the connection between the auxiliary rod and the eccentric cam is the second end; wherein, the eccentric cam has a first state and a second state, in the first state, the first end is abutted against the seat cushion to make the seat cushion in a horizontal state, and in the second state, the second end is abutted against the seat cushion to make the seat cushion in a forward tilted state.

[0007] According to the auxiliary chair described in some embodiments of the present application, the auxiliary rod is suitable for rotating in a first direction to rotate the eccentric cam to the second end and abut against the seat cushion, and the auxiliary rod is suitable for rotating in a second direction to rotate the eccentric cam to the first end and abut against the seat cushion, and the first direction and the second direction are opposite.

[0008] According to some embodiments of the present application, the auxiliary chair further includes: a reset device, which is arranged between the seat cushion and the eccentric cam, and the reset device is used to apply a reset force to the seat cushion and / or the manual flipping device to switch the seat cushion from the forward tilting state to the horizontal state.

[0009] According to the auxiliary chair described in some embodiments of the present application, the reset device includes a reset elastic member, which is elastically connected between the seat cushion and the eccentric cam, and the reset elastic member is used to apply an elastic force to the eccentric cam to switch from the second state to the first state.

[0010] According to the auxiliary chair described in some embodiments of the present application, the reset device also includes a connecting rod, one end of which is connected to the seat cushion, the other end of which is abutted against and slidingly engaged with the outer edge of the eccentric cam, and the reset elastic member is sleeved on the connecting rod.

[0011] According to the auxiliary chair described in some embodiments of the present application, the other end of the connecting rod is provided with an arc-shaped mating surface, and the eccentric cam is in rolling engagement with the arc-shaped mating surface.

[0012] According to the auxiliary chair described in some embodiments of the present application, the electric drive device includes a hydraulic cylinder, and the connection between the hydraulic cylinder and the seat cushion is located on the side of the centroid of the seat cushion close to the backrest; wherein, there are two hydraulic cylinders, the two hydraulic cylinders are located on both sides of the centroid of the seat cushion, and the eccentric cam is located between the two hydraulic cylinders.

[0013] According to the auxiliary chair described in some embodiments of the present application, the auxiliary rod includes a horizontal rod and a vertical rod, the horizontal plate is passed through the eccentric cam, and the vertical rod extends along the height direction of the auxiliary chair and is located on one side in the width direction of the seat cushion.

[0014] According to the auxiliary chair described in some embodiments of the present application, the manual flipping device also includes: a connecting seat, one end of which is connected to the supporting leg and the other end extends toward the seat cushion, and the auxiliary rod is rotatably provided on the connecting seat.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 Schematic diagram of auxiliary chair in some embodiments of the present application Figure 1 ;

[0018] Figure 2 Schematic diagram of auxiliary chair in some embodiments of the present application Figure 2 ;

[0019] Figure 3 Schematic diagram of auxiliary chair in some embodiments of the present application Figure 3 ;

[0020] Figure 4 Schematic diagram of auxiliary chair in some embodiments of the present application Figure 4 ;

[0021] Figure 5 Schematic diagram of auxiliary chair in some embodiments of the present application Figure 5 ;

[0022] Figure 6 This is a schematic diagram of the cooperation between the eccentric cam and the seat cushion in some embodiments of the present application;

[0023] Figure 7 Schematic diagram of the cooperation between the reset device and the eccentric cam in some embodiments of the present application Figure 1 ;

[0024] Figure 8 Schematic diagram of the cooperation between the reset device and the eccentric cam in some embodiments of the present application Figure 2 ;

[0025] Figure 9 Schematic diagram of the cooperation between the reset device and the eccentric cam in some embodiments of the present application Figure 3 ;

[0026] Figure 10 A schematic diagram of an auxiliary rod according to some embodiments of the present application;

[0027] Figure 11 Schematic diagram of a hydraulic cylinder according to some embodiments of the present application.

[0028] Reference numerals:

[0029] auxiliary chair 100;

[0030] Seat cushion 10; backrest 11; armrest 12; support leg 20;

[0031] Electric drive device 30; hydraulic cylinder 31; hinge end 311; output end 312;

[0032] Manual flip device 40; auxiliary rod 41; auxiliary sub-rod 410; horizontal rod 411; matching notch 4111;

[0033] Vertical rod 412; eccentric cam 42; first end 421; second end 422; connecting seat 43;

[0034] Reset device 50; reset elastic member 51; connecting rod 52; arc-shaped matching surface 521; connecting arm 60. DETAILED DESCRIPTION

[0035] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0036] In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also include elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "two or more" includes two or more than two cases.

[0037] In the related art, some elderly people or people who need care due to physical reasons often find it difficult to complete actions such as sitting down, standing up, and moving on their own. Therefore, auxiliary chairs 100 such as assisted standing wheelchairs or nursing chairs are needed to assist such people in completing actions such as moving and standing. However, most of the existing auxiliary chairs 100 are driven by motors. If the motor is damaged or there is a power outage, it will be difficult for the person who needs care to complete actions such as standing independently, which is inconvenient for the person who needs care to use.

[0038] In this regard, the present application proposes an auxiliary chair 100, whose electric drive device 30 and manual flip device 40 can also be used at the same time, so that the auxiliary chair 100 can be applied to a variety of usage scenarios, thereby facilitating use by people who need care.

[0039] The following is combined with Figure 1-11 A booster chair 100 according to some embodiments of the present application is described.

[0040] It should be noted that, for the sake of convenience, the front and back, left and right, and up and down directions are schematically shown in the drawings of this application. Figure 1 As shown, the front side of the seat refers to the side in front of the chest of the person who needs care sitting on the auxiliary chair 100, and the back side of the seat refers to the side behind the person who needs care sitting on the auxiliary chair 100, and the left and right directions and the up and down directions are the actual positions of the person who needs care when sitting on the auxiliary chair 100.

[0041] like Figure 1-4 As shown, the auxiliary chair 100 according to some embodiments of the present application includes: a seat cushion 10.

[0042] like Figure 1-3 As shown, the seat cushion 10 is provided with an armrest 12, the armrest 12 is hinged to the seat cushion 10, and the backrest 11 is connected to the armrest 12. The backrest 11 is separated from the seat cushion 10 and is located on the rear side of the seat cushion 10. In this way, after the person who needs care sits on the seat cushion 10, the back of the person who needs care can lean on the backrest 11 to enhance the comfort of the auxiliary chair 100.

[0043] Further, if Figure 1-3 As shown, the auxiliary chair 100 further includes a support leg 20, and the seat cushion 10 is rotatably connected to the support leg 20. In this way, the seat cushion 10 can rotate relative to the support leg 20, thereby meeting the need to adjust the posture of the seat cushion 10, and facilitating that when the posture of the seat cushion 10 needs to be adjusted, interference between the support leg 20 and the seat cushion 10 can be avoided.

[0044] In some implementations, such as Figure 3 and Figure 5As shown, the seat cushion 10 and the support leg 20 can be rotatably connected through a connecting arm 60, one end of the connecting arm 60 is connected to the support leg 20, and the other end of the connecting arm 60 is connected to the side of the centroid of the seat cushion 10 away from the backrest 11 (close to the front side), and the space formed between the connecting arm 60 and the seat cushion 10 is approximately triangular, so that the supporting effect of the support leg 20 on the seat cushion 10 can be enhanced, thereby enhancing the structural stability of the seat cushion 10.

[0045] In some implementations, a plurality of universal wheels may be provided at one end of the support leg 20 away from the seat cushion 10 , so as to facilitate pushing the auxiliary chair 100 to move and rotate.

[0046] Further, if Figure 1 、 Figure 3 and Figure 5 As shown, the auxiliary chair 100 further includes an electric drive device 30 , which is disposed between the support legs 20 and the seat cushion 10 , and is configured to drive the seat cushion 10 to rotate relative to the support legs 20 around a first axis.

[0047] For example, the first axis can be located at the centroid of the seat cushion 10. In this way, the seat cushion 10 can be driven by the electric drive device 30 to achieve posture adjustments such as leaning forward and leaning back, thereby meeting the various usage needs of the person who needs to be cared for.

[0048] Alternatively, the first axis can be located forward of the centroid of the seat cushion 10. In this way, the electric drive device 30 can be used to drive the seat cushion 10 to a forward tilt position, thereby pushing the person requiring care to a standing position. Alternatively, the first axis can be located rearward of the centroid of the seat cushion 10. In this way, the electric drive device 30 can be used to drive the seat cushion 10 to a backward tilt position, thereby pushing the person requiring care to a head-up position.

[0049] In this embodiment, the first axis can be located in front of the centroid of the seat cushion 10, and the first axis is located at the hinge between the connecting arm 60 and the seat cushion 10. In this way, it is convenient to drive the seat cushion 10 forward by the electric drive device 30, that is, the rear part of the seat cushion 10 is lifted, thereby applying a thrust to the buttocks of the person who needs care, thereby facilitating the assisted standing of the person who needs care.

[0050] The electric drive device 30 may include but is not limited to an electric push rod, a hydraulic rod or a gear structure, which is not limited here, and the electric drive device 30 does not require human control, which reduces its difficulty of use and saves physical effort.

[0051] Further, if Figure 1 As shown, the auxiliary chair 100 further includes a manual turning device 40, as shown in FIG. Figure 6 As shown, the manual turning device 40 (as Figure 1 The manual flipping device 40 shown in the figure includes an auxiliary rod 41 and a cam, the auxiliary rod 41 is rotatably set on the support leg 20, and the cam is fixedly sleeved on the auxiliary rod 41, and the outer edge of the cam is suitable for abutting against the seat cushion 10; wherein the seat cushion 10 is suitable for being connected to the backrest 11, and the position where the outer edge of the cam abuts against the seat cushion 10 is located on the side of the centroid of the seat cushion 10 close to the backrest 11, the connection between the auxiliary rod 41 and the cam is staggered with the centroid of the cam, and the auxiliary rod 41 is suitable for rotating relative to the support leg 20 so that the cam drives the seat cushion 10 to tilt forward.

[0052] It can be understood that, for example, the cam is circular, and since the connection between the auxiliary rod 41 and the cam is offset from the centroid of the cam, the distance between the outer edge of the cam and the auxiliary rod 41 is different. In this way, when the auxiliary rod 41 rotates, the cam rotates so that different positions of the outer edge of the cam will be against the cushion 10. Since the position where the outer edge of the cam is against the cushion 10 is located on the side of the centroid of the cushion 10 close to the backrest 11, at the position where the distance from the outer edge of the cam to the auxiliary rod 41 is larger, the cam will lift against the back side of the cushion 10 to achieve the forward tilt of the cushion 10. At the same time, when the cam lifts against the back side of the cushion 10, the back side of the cushion 10 will apply a thrust to the buttocks of the person who needs care, thereby facilitating the assisted standing of the person who needs care.

[0053] Or at a position where the distance between the outer edge of the cam and the auxiliary rod 41 is smaller, the push received by the cam on the seat cushion 10 is smaller, thereby facilitating a horizontal posture of the seat cushion 10 and making it easier for the person who needs care to sit.

[0054] According to the auxiliary chair 100 described in the embodiment of the present application, the electric drive device 30 can be used to drive the seat cushion 10 to rotate around the first axis relative to the support leg 20, so that the seat cushion 10 can be flipped over to assist the person who needs care to independently complete the standing action. At the same time, when the electric drive device 30 fails, the auxiliary rod 41 can be rotated to allow the cam to drive the seat cushion 10 to tilt forward, thereby assisting the person who needs care to independently complete the standing action. Of course, the electric drive device 30 and the manual flipping device 40 can also be used at the same time. In this way, the auxiliary chair 100 can be suitable for a variety of usage scenarios, thereby facilitating the use of people who need care. In particular, the connection between the auxiliary rod 41 and the cam is offset from the centroid of the cam, that is, the connection between the auxiliary rod 41 and the cam is eccentric to the cam. This setting method is relatively simple, which helps to reduce the difficulty and cost of setting.

[0055] In some embodiments, the cam comprises an eccentric cam 42, e.g. Figure 6As shown, the eccentric cam 42 can be a cam similar to a water drop shape, and the eccentric cam 42 is provided with a first end 421 and a second end 422. The end at which the distance from the edge of the eccentric cam 42 to the connection between the auxiliary rod 41 and the eccentric cam 42 is the smallest is the first end 421, and the end at which the distance from the edge of the eccentric cam 42 to the connection between the auxiliary rod 41 and the eccentric cam 42 is the largest is the second end 422.

[0056] Among them, the eccentric cam 42 has a first state and a second state. In the first state, the distance from the edge of the eccentric cam 42 to the connection between the auxiliary rod 41 and the eccentric cam 42 is the smallest, that is, the distance from the seat cushion 10 to the connection between the auxiliary rod 41 and the eccentric cam 42 is the smallest. In this way, the first end 421 is abutted against the seat cushion 10 to make the seat cushion 10 in a horizontal state, which is convenient for the person who needs care to sit on.

[0057] In the second state, the distance from the edge of the eccentric cam 42 to the connection between the auxiliary rod 41 and the eccentric cam 42 is the largest, that is, the distance from the seat cushion 10 to the connection between the auxiliary rod 41 and the eccentric cam 42 is the largest. At this time, the eccentric cam 42 will press against the back side of the seat cushion 10, that is, the second end 422 will abut against the seat cushion 10 to make the seat cushion 10 in a forward tilted state. At the same time, in the process of the eccentric cam 42 lifting against the back side of the seat cushion 10, the back side of the seat cushion 10 will apply a thrust to the buttocks of the person who needs care, thereby facilitating the assisted standing of the person who needs care.

[0058] In some embodiments, the manual flipping device 40 drives the seat cushion 10 to flip in a direction proportional to the maximum radial dimension of the eccentric cam 42. Since the manual flipping device 40 drives the seat cushion 10 to flip by changing the position of the outer edge of the eccentric cam 42 in contact with the seat cushion 10, the posture adjustment of the seat cushion 10 is achieved only when the distance from the outer edge of the eccentric cam 42 in contact with the seat cushion 10 to the connection between the auxiliary rod 41 and the eccentric cam 42 changes. The maximum radial dimension of the teardrop-shaped eccentric cam 42 is the distance from the first end 421 to the second end 422. Therefore, the manual flipping device 40 drives the seat cushion 10 to flip in a direction proportional to the maximum radial dimension of the eccentric cam 42. In this way, the flipping stroke of the seat cushion 10 can be easily determined based on the maximum radial dimension of the eccentric cam 42.

[0059] In some embodiments, at least a portion of the auxiliary rod 41 extends to the width direction of the seat cushion 10 (eg, Figure 1 The auxiliary rod 41 is adapted to rotate in a first direction to rotate the eccentric cam 42 to the second end 422 and abut against the seat cushion 10, and the auxiliary rod 41 is adapted to rotate in a second direction to rotate the eccentric cam 42 to the first end 421 and abut against the seat cushion 10, and the first direction and the second direction are opposite.

[0060] For example, the first direction can be a clockwise direction toward the front, and the second direction can be a counterclockwise direction toward the back. In this way, when the person who needs care is standing up, the person who needs care presses the auxiliary rod 41 forward to make the auxiliary rod 41 rotate clockwise, so that the eccentric cam 42 rotates to the second end 422 and abuts against the seat cushion 10. In this process, the distance between the seat cushion 10 and the connection between the auxiliary rod 41 and the eccentric cam 42 gradually increases, thereby lifting the seat cushion 10. In the process of the eccentric cam 42 lifting the back side of the seat cushion 10, the back side of the seat cushion 10 will apply a thrust to the buttocks of the person who needs care, thereby facilitating the assisted standing of the person who needs care.

[0061] When the person who needs care needs to sit down, the person who needs care presses the auxiliary rod 41 backward to make the auxiliary rod 41 rotate counterclockwise, so that the eccentric cam 42 rotates to the first end 421 and abuts against the seat cushion 10. During this process, the distance between the seat cushion 10 and the connection between the auxiliary rod 41 and the eccentric cam 42 gradually decreases, thereby flattening the seat cushion 10. In the process of the eccentric cam 42 pressing the back side of the seat cushion 10 to flatten it, the back side of the seat cushion 10 will gradually flatten to continue to support the buttocks of the person who needs care, thereby avoiding injury caused by sitting down too quickly.

[0062] In some embodiments, as Figure 1 and Figure 6 As shown, the auxiliary chair 100 also includes: a reset device 50, which is arranged between the seat cushion 10 and the eccentric cam 42, and the reset device 50 is used to apply a reset force to the seat cushion 10 and / or the manual flipping device 40 to switch the seat cushion 10 from a forward tilted state to a horizontal state.

[0063] It is understood that the reset device 50 is used to apply a reset force to the seat cushion 10 to switch from the forward tilted state to the horizontal state, or the reset device 50 is used to apply a reset force to the manual flip device 40 to switch from the forward tilted state to the horizontal state, or the reset device 50 is used to apply a reset force to both the seat cushion 10 and the manual flip device 40 to switch from the forward tilted state to the horizontal state. In this way, the seat cushion 10 can be automatically reset by the reset device 50, eliminating the need for manual reset and reducing the difficulty of resetting the seat cushion 10.

[0064] In some embodiments, as Figure 7-Figure 9 As shown, the reset device 50 includes a reset elastic member 51, which is elastically connected between the seat cushion 10 and the eccentric cam 42, and is used to apply an elastic force to the eccentric cam 42 to switch from the second state to the first state.

[0065] In this way, the resetting elastic member 51 can apply an elastic force to the eccentric cam 42 to switch from the second state to the first state, so that when the auxiliary rod 41 is not affected by external force, that is, when the eccentric cam 42 is not affected by external force, the eccentric cam 42 can automatically switch from the second state to the first state under the elastic force of the resetting elastic member 51, and the first state of the eccentric cam 42 corresponds to the horizontal state of the seat cushion 10. In this way, the seat cushion 10 can be automatically reset by the resetting elastic member 51, thereby eliminating the need for manual reset and reducing the difficulty of resetting the seat cushion 10.

[0066] The resetting elastic member 51 may include but is not limited to a spring, a reed or other elastic deformation structures, which are not limited here.

[0067] In some embodiments, as Figure 7-Figure 9 As shown, the reset device 50 also includes a connecting rod 52, one end of the connecting rod 52 is connected to the seat cushion 10, the other end of the connecting rod 52 is against the outer edge of the eccentric cam 42 and slides with the outer edge of the eccentric cam 42, and the reset elastic member 51 is sleeved on the connecting rod 52.

[0068] In this way, the connecting rod 52 can provide a certain support for the reset elastic member 51 to avoid dislocation and deformation of the reset elastic member 51. At the same time, the other end of the connecting rod 52 is in contact with the outer edge of the eccentric cam 42 and slides with the outer edge of the eccentric cam 42, so that when the eccentric cam 42 rotates, the connecting rod 52 can slide with the eccentric cam 42, thereby achieving the adjustment of the posture of the seat cushion 10 while avoiding interference between the eccentric cam 42 and the connecting rod 52.

[0069] In some embodiments, as Figure 9 As shown, the other end of the connecting rod 52 is provided with an arcuate matching surface 521 , and the eccentric cam 42 is in rolling engagement with the arcuate matching surface 521 .

[0070] In this way, by providing the arc-shaped mating surface 521, rolling friction occurs between the outer edge of the eccentric cam 42 and the connecting rod 52, thereby reducing the friction between the outer edge of the eccentric cam 42 and the connecting rod 52, thereby reducing the force required for the auxiliary rod 41 to rotate.

[0071] In some embodiments, as Figure 6 As shown, the electric drive device 30 includes a hydraulic cylinder 31. The connection between the hydraulic cylinder 31 and the seat cushion 10 is located on the side of the centroid of the seat cushion 10 close to the backrest 11. In this way, when the first axis is located in front of the centroid of the seat cushion 10, the electric drive device 30 can drive the seat cushion 10 to tilt forward, thereby pushing the person in need of care to a standing position by tilting the seat cushion 10 forward.

[0072] In some embodiments, as Figure 6As shown, there are two hydraulic cylinders 31 , which are located on both sides of the centroid of the seat cushion 10 . In this way, the force applied to the seat cushion 10 can be balanced by the two hydraulic cylinders 31 , thereby ensuring the balance of the seat cushion 10 .

[0073] The eccentric cam 42 is located between the two hydraulic cylinders 31. In this way, the space between the two hydraulic cylinders 31 can be fully utilized, making the structural arrangement more compact, which is conducive to realizing the miniaturization design of the auxiliary chair 100.

[0074] In some embodiments, as Figure 2 and Figure 6 As shown, the auxiliary rod 41 includes a horizontal rod 411 and a vertical rod 412 . The horizontal plate passes through the eccentric cam 42 . The vertical rod 412 extends along the height direction of the auxiliary chair 100 and is located on one side of the seat cushion 10 in the width direction.

[0075] For example Figure 2 As shown, the horizontal rod 411 can extend in the left-right direction, and the vertical rod 412 can extend in the up-down direction, and there can be two vertical rods 412, which are respectively located on both sides of the width direction of the seat cushion 10. In this way, the two vertical rods 412 are closer to the armrest, making it easier for the person who needs care to hold them.

[0076] In some embodiments, the auxiliary rod 41 may include two horizontal rods 411 and two vertical rods 412, wherein Figure 10 As shown, each horizontal rod 411 is connected to a vertical rod 412 to form an auxiliary sub-rod 410, wherein the horizontal rod 411 can be provided with a matching notch 41, and the matching notch 41 of the horizontal rod 411 of one auxiliary sub-rod 410 is welded or detachably connected to the matching notch 41 of the horizontal rod 411 of another auxiliary sub-rod 410, and the eccentric cam 42 is sleeved at the connection between the two matching notches 41.

[0077] In this way, the difficulty of setting the auxiliary rod 41 is reduced, and the eccentric cam 42 can drive the seat cushion 10 to flip while also having the function of enhancing the connection strength of the two auxiliary sub-rods 410 at the connection of the two matching notches 41.

[0078] In some embodiments, as Figure 3 As shown, the manual flipping device 40 further includes: a connecting seat 43 , one end of which is connected to the supporting leg 20 and the other end extends toward the rear side of the seat cushion 10 , and the auxiliary rod 41 is rotatably provided through the connecting seat 43 .

[0079] In this way, the difficulty of connecting and matching the auxiliary rod 41 with the support leg 20 is reduced, and the auxiliary rod 41 is rotatably installed in the connecting seat 43 to enhance the structural stability of the auxiliary rod 41.

[0080] In some embodiments, as Figure 6 like Figure 11 As shown, the two ends of the hydraulic cylinder 31 are respectively an output end 312 and a hinge end 311. The output end 312 is connected to the seat cushion 10 and is hinged to the seat cushion 10 to adapt to the rotation of the seat cushion 10 relative to the output end 312. The hinge end 311 can also be hinged to the connecting seat 43, thereby reducing the difficulty of connecting the hydraulic cylinder 31 with the support leg 20.

[0081] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0083] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0084] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0086] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An auxiliary chair (100), characterized in that: include: Cushion (10); A support leg (20), the seat cushion (10) being rotatably connected to the support leg (20); an electric drive device (30), the electric drive device (30) being arranged between the support leg (20) and the seat cushion (10), and the electric drive device (30) being used to drive the seat cushion (10) to rotate relative to the support leg (20) around a first axis; A manual flipping device (40), the manual flipping device (40) comprising an auxiliary rod (41) and a cam, the auxiliary rod (41) being rotatably arranged on the support leg (20), the cam being fixedly sleeved on the auxiliary rod (41), and the outer edge of the cam being adapted to abut against the seat cushion (10); The seat cushion (10) is suitable for being connected to the backrest (11), and the position where the outer edge of the cam abuts against the seat cushion (10) is located on the side of the centroid of the seat cushion (10) close to the backrest (11), the connection between the auxiliary rod (41) and the cam is offset from the centroid of the cam, and the auxiliary rod (41) is suitable for rotating relative to the support leg (20) so that the cam drives the seat cushion (10) to tilt forward.

2. The auxiliary chair (100) according to claim 1, characterized in that The cam comprises an eccentric cam (42), the eccentric cam (42) being provided with a first end (421) and a second end (422), the end of the eccentric cam (42) having the smallest distance from the edge of the eccentric cam (42) to the connection between the auxiliary rod (41) and the eccentric cam (42) being the first end (421), and the end of the eccentric cam (42) having the largest distance from the edge of the eccentric cam (42) to the connection between the auxiliary rod (41) and the eccentric cam (42) being the second end (422); The eccentric cam (42) has a first state and a second state. In the first state, the first end (421) abuts against the seat cushion (10) so that the seat cushion (10) is in a horizontal state. In the second state, the second end (422) abuts against the seat cushion (10) so that the seat cushion (10) is in a forward tilted state.

3. The auxiliary chair (100) according to claim 2, characterized in that The auxiliary rod (41) is adapted to rotate in a first direction so that the eccentric cam (42) rotates to the second end (422) to abut against the seat cushion (10), and the auxiliary rod (41) is adapted to rotate in a second direction so that the eccentric cam (42) rotates to the first end (421) to abut against the seat cushion (10), and the first direction and the second direction are opposite.

4. The auxiliary chair (100) according to claim 2, characterized in that Also includes: A reset device (50) is provided between the seat cushion (10) and the eccentric cam (42), and the reset device (50) is used to apply a reset force to the seat cushion (10) and / or the manual flipping device (40) to switch the seat cushion (10) from the forward tilting state to the horizontal state.

5. The auxiliary chair (100) according to claim 4, characterized in that The reset device (50) comprises a reset elastic member (51), the reset elastic member (51) being elastically connected between the seat cushion (10) and the eccentric cam (42), and the reset elastic member (51) being used to apply an elastic force to the eccentric cam (42) to switch from the second state to the first state.

6. The auxiliary chair (100) according to claim 5, characterized in that The reset device (50) further comprises a connecting rod (52), one end of which is connected to the seat cushion (10), the other end of which abuts against and slides with the outer edge of the eccentric cam (42), and the reset elastic member (51) is sleeved on the connecting rod (52).

7. The auxiliary chair (100) according to claim 6, characterized in that The other end of the connecting rod (52) is provided with an arcuate matching surface (521), and the eccentric cam (42) is in rolling engagement with the arcuate matching surface (521).

8. The auxiliary chair (100) according to claim 2, characterized in that The electric drive device (30) includes a hydraulic cylinder (31), and the connection between the hydraulic cylinder (31) and the seat cushion (10) is located on a side of the centroid of the seat cushion (10) close to the backrest (11); There are two hydraulic cylinders (31), the two hydraulic cylinders (31) are located on both sides of the centroid of the seat cushion (10), and the eccentric cam (42) is located between the two hydraulic cylinders (31).

9. The auxiliary chair (100) according to claim 2, characterized in that The auxiliary rod (41) includes a horizontal rod (411) and a vertical rod (412), the horizontal plate is passed through the eccentric cam (42), and the vertical rod (412) extends along the height direction of the auxiliary chair (100) and is located on one side of the seat cushion (10) in the width direction.

10. The auxiliary chair (100) according to any one of claims 1 to 9, characterized in that: The manual flipping device (40) further comprises: a connecting seat (43), one end of which is connected to the supporting leg (20) and the other end of which extends toward the seat cushion (10), and the auxiliary rod (41) is rotatably arranged through the connecting seat (43).

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