CN219629148U - Base components and chair lifts - Google Patents

Abstract

The utility model relates to a base assembly and a lift chair, comprising connecting plates fixed on both sides of a fixed frame, the connecting plate is detachably equipped with a base; one end of the connecting plate forms a limited slot mechanism, correspondingly, the base Pins are formed on the inner side of the connecting plate, and the pins are assembled in the limiting groove mechanism, and a limiting mechanism for fastening the base on the connecting plate is provided on the outer side of the connecting plate; the utility model has a simple structure, and the connecting plate and the base are detachably connected. The entire base assembly can be stored and placed, which is convenient for transportation and improves space utilization.

Description

Base components and chair lifts

technical field

The utility model belongs to the technical field of lift chair devices, in particular to a base assembly and a lift chair.

Background technique

With the increasingly severe form of population aging in our country, the problem of population aging has become a prominent social problem that our country is about to face. At the same time, our country is the most populous country in the world. With the advancement of work, the number and proportion of the elderly in the total population continues to increase.

As the elderly grow older, various body functions will also decline, and walking will become more and more sluggish. Due to the decline in physical functions, some elderly people cannot pass their own strength after accidentally falling down. stand. If the elderly cannot get up for a long time after falling, there are hidden dangers. The low temperature on the ground will erode the body of the elderly, easily cause colds and complications, and cause physical harm to the elderly.

In order to solve the above technical problems, the application number: CN202123060526.3 discloses a smart chair for the elderly to assist the elderly to move, including a base, a lifting frame and a slider. The pins are connected with a lifting frame in rotation, one side of the lifting frame is fixedly connected with a tie rod, the middle part of the side of the lifting frame at the rear end is fixedly connected with a limit rod, and the middle part of the base is provided with a slide Slot, the inside of the chute is slidably connected with a slider, the side of the slider is provided with a limit groove, the upper surface of the base is fixedly connected with a motor, and the output shaft of the motor is fixedly connected with a screw rod; The raised seat enables the elderly to stand up through the seat lift to assist the elderly to stand up, avoiding the traditional seat, the elderly cannot get assistance to stand, and the situation of falling occurs.

But this device has the following disadvantages: the seat has a certain distance from the ground, and the old man needs to stand up to a certain height by his own strength before he can sit on the seat after a fall. High, reducing ease of use and practicality.

In this patent, the base is applied under the seat and is mainly used to assist the elderly to stand up. According to the description of the patent document, the base and the seat in this patent are connected by pulleys, which are a complete whole and cannot be disassembled. The structure that cannot be disassembled also causes inconvenience to transportation and storage.

For above-mentioned technical problem, so need to improve.

Utility model content

The utility model aims at overcoming the defects in the above-mentioned prior art, and provides a base assembly and a lift chair that are simple and reasonable in structure, convenient for storage and transportation, and can assist the fallen old man to stand up, and can be used as an ordinary conventional chair.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the base assembly includes connecting plates fixed on both sides of the fixed frame, the connecting plate is detachably equipped with a base; one end of the connecting plate forms a limited Correspondingly, the inner side of the base is formed with pins for the groove mechanism, and the pins are assembled in the limiting groove mechanism, and the outer side of the connecting plate is provided with a limiting mechanism for fastening the base on the connecting plate.

As a preferred mode of the present utility model, the limit groove mechanism includes a guide groove and a limit groove; The position groove is connected with the guide groove, and the limit groove is arranged from top to bottom, and a limit protrusion is formed at the junction of the limit groove and the guide groove.

As a preferred mode of the present invention, the guide groove is in the shape of a trumpet, and the end of the guide groove is in an arc shape.

As a preferred mode of the present invention, the fixed frame and the connecting plate are connected by a welding plate in an L-shaped structure.

As a preferred mode of the present invention, the position limiting mechanism includes a pressure plate vertically fixed outside the connecting plate, the pressure plate is attached to the upper surface of the base, and a limit hole is formed on the pressure plate. Correspondingly, a A through hole corresponding to the limit hole, and bolts are inserted between the through hole and the limit hole for fastening.

As a preferred mode of the present invention, plugs are plugged on both sides of the base.

As a preferred mode of the present invention, the two ends of the bottom of the base are installed with feet, wherein, the middle of the bottom of the base is provided with a hook for the feet.

A lift chair, comprising a fixed frame, the fixed frame is slidably connected to a back frame, the bottom of the back frame is rotatably connected to a stool assembly, a lifting mechanism is installed between the fixed frame and the back frame, and the lifting mechanism drives the back frame to move up and down on the fixed frame move, and then drive the stool assembly to lift; the fixed frame is assembled on the base assembly.

As a preferred form of the present invention, the lifting mechanism includes a lifting motor fixed on the fixed frame, the backrest frame is connected to the output end of the lifting shaft of the lifting motor, and the backrest frame can move up and down along the lifting shaft.

As a preferred form of the present invention, the lift chair has an unfolded state and a folded storage state, and when the lift chair is converted from the unfolded state to the folded storage state, the stool assembly is relatively The back frame pivots so that the upper surface of the stool assembly draws closer to the front surface of the back frame.

As a preferred form of the present utility model, the backrest reinforcing ribs are installed symmetrically on the inner side of the upper part of the backrest frame, and the backrest is installed on the front end of the backrest frame.

As a preferred mode of the present invention, connecting seats are fixed on both sides of the backrest frame, handle seats are fixed on the connecting seats, and handrails are rotatably connected to the handle seats.

As a preferred mode of the present invention, the stool assembly is connected to the backrest frame through a stool connecting piece.

As a preferred mode of the present invention, the stool connector includes a top plate, side plates fixed on both sides of the top plate, and a mounting plate is arranged downward at the front end of the bottom of the side plate; the top plate, the side plate and the mounting plate are fixedly connected, One piece.

As a preferred mode of the present utility model, an assembly cavity is formed between the top plate and the two side plates, and the bottom of the backrest frame is fixed in the assembly cavity; wherein, the side plates and the installation plates are arranged horizontally, and the connection between the side plates and the installation plates The upper and lower ends are in a circular arc transition structure, and an S-shaped structure is formed between the side plate and the mounting plate.

As a preferred form of the present utility model, the front side of the bottom of the mounting plate is in a circular arc structure, and a pivot is installed between the two mounting plates, and the pivot is connected to the upper end of the reinforcing rib of the stool and the lower end of the reinforcing rib of the stool. It is fixed on the end of the stool component.

As a preferred mode of the present invention, the stool assembly includes a stool main frame, and the stool is installed on the stool main frame.

As a preferred form of the present invention, the stool reinforcement includes a positioning plate, which is assembled on both sides of the positioning plate, and the positioning plate is fixedly connected with the reinforcement plates on both sides, and integrally formed.

As a preferred mode of the present invention, the bottom of the positioning plate is against the main frame of the stool, the upper end of the reinforcing plate passes through the pivot, and the bottom of the reinforcing plate is on the same level as the bottom of the main frame of the stool.

As a preferred mode of the present invention, when the lifting mechanism is in the initial state and the stool assembly is in the expanded state, the horizontal plane of the bottom of the main frame of the stool is lower than the horizontal plane of the bottom of the mounting plate.

As a preferred mode of the present invention, the front end of the fixed frame is equipped with wheels for pushing the lift chair.

Compared with the prior art, the base assembly and the lift chair provided by the utility model have the following advantages:

1. The utility model has a simple structure, and the entire base assembly can be stored and placed through the detachable connection between the connecting plate and the base, which is convenient for transportation and improves space utilization.

2. The utility model is ingeniously designed. By setting the limit groove mechanism and the mutual cooperation between the limit mechanism, the connecting plate and the base can be easily disassembled and connected tightly, thereby ensuring the safety of use.

3. In the lift chair of the present invention, the lift mechanism can efficiently realize the different initial heights of the seat of the lift chair. At the same time, the backrest frame is connected to the seat assembly in rotation, and can be switched between the storage state and the seat supply state; That is, giving more autonomy to the elderly in situations of limited mobility; helping the elderly to stand up with minimal effort when they fall at home.

Description of drawings

Fig. 1 is a structural schematic diagram (1) of the base assembly of the embodiment of the utility model;

Fig. 2 is a structural schematic diagram (2) of the base assembly of the embodiment of the utility model;

Fig. 3 is the structural schematic diagram of the connecting plate of the embodiment of the utility model;

Fig. 4 is a side view of the lift chair according to the embodiment of the present invention;

Fig. 5 is a diagram of the use state of the lift chair according to the embodiment of the present invention;

Fig. 6 is a schematic structural view of the lift chair according to the embodiment of the utility model;

Fig. 7 is a structural schematic diagram of a stool connector according to an embodiment of the present invention;

Fig. 8 is a structural schematic diagram of a stool reinforcing rib in an embodiment of the utility model;

Reference signs in the figure: fixed frame 1, backrest frame 2, stool assembly 3, lifting mechanism 4, stool connector 5, stool reinforcement rib 6, connecting plate 7, base 8, limit mechanism 9, limit groove Mechanism 10, guide groove 11, limit groove 12, limit protrusion 13, arc structure 14, plug 15, welding plate 16, anchor 17, wheel 18, anchor hook 19, connecting seat 20, handle seat 21 , armrest 22, back rib 23, backrest 24, stool main frame 30, stool 31, lifting motor 40, lifting shaft 41, top plate 50, side plate 51, mounting plate 52, arc transition structure 53, assembly cavity 54 , Pivot 55, arc structure 56, positioning plate 60, reinforcing plate 61, through hole 80, pin 81, pressure plate 90, limit hole 91, bolt 92, base assembly 100.

Detailed ways

Below in conjunction with accompanying drawing, the utility model embodiment is described in detail.

Example:

As shown in Figure 1-2, it is a schematic structural diagram of the base assembly of the embodiment of the present invention, wherein the base assembly includes connecting plates 7 fixed on both sides of the fixed frame 1, and the connecting plate 7 is detachably equipped with a base 8 One end of the connecting plate 7 forms a limit groove mechanism 10, correspondingly, the inner side of the base 8 is formed with a pin 81, the pin 81 is assembled in the limit groove mechanism 10, and the outside of the connecting plate 7 is provided with a base 8 The limit mechanism 9 fastened on the connecting plate 7; through the detachable connection between the connecting plate 7 and the base 8, the entire base assembly can be stored and placed, which is convenient for transportation and improves space utilization.

As shown in Figure 3, the structural schematic diagram of the connection plate of the embodiment of the present utility model; wherein, one end of the connection plate 7 forms a limit groove mechanism 10, and the limit groove mechanism 10 includes a guide groove 11 and a limit groove 12; Groove 11 is communicated with limiting groove 12, and wherein, guiding groove 11 is opening downwards, and is arranged obliquely on connecting plate 7, and limiting groove 12 communicates with guiding groove 11, and limiting groove 12 is arranged from top to bottom obliquely, and position limiting A limiting protrusion 13 is formed at the junction of the groove 12 and the guide groove 11 .

During the installation process of the base assembly, the guide groove 11 is used to facilitate the entry of the pin 81 on the base 8, and the pin 81 slides from the guide groove 1 to the limit groove 12. Since the limit groove 12 is arranged inclined from top to bottom, the pin 81 is assembled In the limiting groove 12 , since the limiting protrusion 13 is formed at the junction of the limiting groove 12 and the guide groove 11 , the limiting protrusion 13 can limit the movement of the pin 81 in the vertical or horizontal direction.

Wherein, the guide groove 11 is a trumpet-shaped structure, which is arranged in a horn-shaped structure, so that the opening area of the whole guide groove 11 is increased; , during the assembly process of the pin 81, the contact area between the pin 81 and the arc-shaped structure 14 of the guide groove 11 is increased, which not only ensures the safety of assembly, but also improves the assembly efficiency.

The fixed frame 1 and the connecting plate 7 are connected by a welding plate 16 in an L-shaped structure; the structural strength of the entire base assembly is improved.

The limit mechanism 9 includes a pressure plate 90 vertically fixed outside the connecting plate 7, the pressure plate 90 is attached to the upper surface of the base 8, and a limit hole 91 is formed on the pressure plate 90. Correspondingly, the base 8 is formed with a limit hole. 91 corresponds to the through hole 80, and bolts are inserted between the through hole 80 and the limiting hole 91 for fastening.

Both sides of the base 8 are plugged with plugs 15; the plugs 15 are made of insulating or plastic materials, and the use of the plugs 15 can keep the entire base 8 in a sealed state to achieve an aesthetic effect.

Anchor feet 17 are installed at both ends of the bottom of the base 8 , wherein an anchor hook 16 is provided at the middle of the bottom of the base 8 .

There are four feet 17 provided by the utility model, and the four feet 17 can make the base 8 tilt within the preset height range, so that the whole base assembly is slightly tilted forward, which is convenient for assisting the elderly to move to the lift chair. The feet 17 can adjust the height of the base assembly, so that the force of the base assembly is more uniform. In addition, because the feet are assembled on the bottom of the base 8, a certain amount of vibration energy can be consumed, thereby achieving the effect of alleviating vibration.

As shown in Figure 4-6, a lift chair includes a fixed frame 1, the fixed frame 1 is slidably connected to a back frame 2, the bottom of the back frame 2 is rotatably connected to a stool assembly 3, and the fixed frame 1 and the back frame 2 are assembled There is a lifting mechanism 4, which drives the backrest frame 2 to move up and down on the fixed frame 1, and then drives the stool assembly 3 to lift; the fixed frame 1 is assembled on the base assembly 100.

Those skilled in the art can understand that, in the description of the utility model embodiment, the front, rear, left, right, up, and down directions are all subject to the direction when the lift chair is in normal use, for example, the front of the backrest frame 2 is the front direction, and the backrest frame 2 The rear of the backrest frame 2 is the rear direction, the left side of the backrest frame 2 is the left direction, and the right side of the backrest frame 2 is the right direction.

The fixed frame 1 , back frame 2 and stool assembly 3 are made of rigid materials that are rated to withstand the applied forces without bending or incurring other damage; an important aspect of the back frame 2 and fixed frame 1 is their sturdiness. Especially, when the old man sits down on the stool assembly 3, the stool assembly 3 and the fixed frame 1 bear a relatively large force. For the comfort and safety of the elderly, it is important that the fixed frame 1 and the backrest frame 2 maintain a relative positional relationship, including when a heavy object is placed on the stool assembly 3 . For this purpose, the backrest frame 2 and the fixed frame 1 can be steel pipes that are strong enough so that their deformation remains minimal or zero; the fixed frame 1 plays a stabilizing role at the bottom, and the steel pipes on both sides of the backrest frame 2 are sleeved on the fixed frame 1, the backrest frame 2 is driven to move up and down by the lifting mechanism 4, and its trajectory is consistent with the stroke.

The stool assembly 3 can thus be lowered to the ground. The fixed frame 1 and the backrest frame 2 are designed in such a way that they maintain the necessary sturdiness while improving the ergonomics and applicability of the device in many different situations; giving more autonomy to the elderly in situations of reduced mobility.

When the stool assembly 3 is kept horizontal, it can be raised to a desired height to expand the application range. Specifically, in this embodiment, the stroke range of the stool 31 is 0-500mm.

In the lift chair of the present utility model, the lifting mechanism 4 can efficiently realize the different initial heights of the stools of the lift chair, and at the same time, the backrest frame 2 and the stool assembly 3 are rotatably connected to switch between the storage state and the seat supply state .

In addition, due to the cooperation between the stool assembly 3 and the base assembly 100 in this case, the stool assembly 3 can always bear the supporting force from the base assembly 100. Therefore, during the lifting process of the lift chair, it can assist the elderly to change from the posture of falling to the ground. Sitting or standing posture.

The utility model makes the up and down adjustment process of the backrest frame 2 and the stool assembly 3 more slow and stable by setting the lifting mechanism 4 , is easy to control, and has a simple structure and is convenient for installation and maintenance.

Moreover, the lifting mechanism 4 is located in the middle of the backrest frame 2 and the stool assembly 3, and does not occupy the width between the front and rear of the lift chair, and the space utilization rate is high. When the lift chair is folded into a flat shape, it is beautiful in use and storage are greatly improved.

Specifically, the lifting mechanism 4 includes a lifting motor 40 fixed on the fixed frame 1 , the back frame 2 is connected to the output end of the lifting shaft 41 of the lifting motor 40 , and the back frame 2 can move up and down along the lifting shaft 41 . The lifting motor 40 can be electrically connected to the control mechanism through wires, and the control mechanism can be a structure in the form of a handle for controlling the lifting and speed control of the lifting motor 40 .

In specific use, the lifting motor 40 will drive the backrest frame 2 and the stool assembly 3 to move upward along the lifting shaft 41. In the initial position, the stool assembly 3 is roughly in a horizontal state, close to or attached to the ground. The stool assembly 3 can assist the elderly when it is in the state of offering a seat. If it falls to the ground, it will result in being unable to get up without assistance. This chair lift provides support and comfort for the movement of the elderly, and may prove to be a vital aid in isolated patient situations.

When the old man sits on the stool assembly 3 through his own efforts, by pressing the control mechanism (not shown in the figure), as the backrest frame 2 moves upwards further, the stool assembly 3 will also move upwards further until the stool assembly 3, the old man on the top is in a reasonable position, press the control mechanism, so that the lifting motor 40 stops working; when the use is over, the lifting motor 40 drives the backrest frame 2 and the stool assembly 3 to move downward, when the stool assembly 3 is close to or fits on the When the ground is on the ground, the lifting motor 40 stops working. At this time, the stool assembly 3 is roughly in a horizontal state. At this time, the stool assembly 3 is folded and stored.

It should be noted that during the above-mentioned movement process, the working state of the lifting motor 40 is controlled by the control mechanism (not shown in the figure), and the control mechanism is preset with information such as the working state and working time of the lifting motor 40, so that the lifting motor 40 The amount of expansion and contraction is just enough to make the stool assembly 3 be in the storage state and the seating state. The control mechanism controls the amount of expansion and contraction of the lifting motor 40, which belongs to the prior art and will not be repeated here. In addition, since the telescopic movement of the lifting motor 40 has a more efficient reciprocating movement than that of the screw mechanism, it can change from the storage state to the seating state more quickly, allowing users to have a better experience. Of course, the telescopic rate of the lifting motor 40 can be set according to the actual requirement of assisting the user to stand from the seat supply state to the storage state, so as to achieve a better experience, which will not be repeated here.

The lift chair has an expanded state and a folded storage state. When the lift chair is converted from the expanded state to the folded storage state, the stool assembly 3 rotates around the pivot 55 relative to the backrest frame 2, so that the upper surface of the stool assembly 3 faces the folded storage state. The front surface of the backrest frame 2 is close together; when the lift chair is not in use, the lift chair can be folded into a flat shape, which reduces the volume of the whole lift chair, and changes the shape of the lift chair into a flat shape for easy storage, making it easy to store.

The top inboard of backrest frame 2 is symmetrically installed with backrest reinforcing rib 23, has improved the structural strength and overall solidity of whole backrest frame 2, has further guaranteed safe use, and backrest 24 is installed on the front end of backrest frame 2.

Both sides of the backrest frame 2 are fixedly provided with connecting seats 20, and the connecting seats 20 are fixedly provided with a handle seat 21, and the handle seat 21 is rotatably connected with an armrest 22; the patient can lean on the armrest 22 to position himself on the stool assembly 3 On the stool 31. Therefore the armrest 22 itself must be strong and support the weight of the elderly. In particular, they should not sag under the weight of the elderly person and they should not move towards the inside or towards the outside of the stool 31 when the elderly person is trying to lift himself onto the stool assembly 3 . The armrest 22 is advantageously fixed on the backrest frame 2 of the connecting seat 20, and its rigidity and solidity make it able to support the efforts of the elderly.

The armrest 22 is advantageously retractable to facilitate access to the stool 31 by an elderly person; the armrest 22 can be pivoted upwards, for example from a position where support is available, towards a retracted position. Such a retracted position corresponds, for example, to an orientation of the armrest parallel to the longitudinal axis of the side frame in the plane formed by the backrest frame 2 . The position allowing support generally corresponds to the direction of the armrest 22 parallel to the axis of the stool 31 . Arranged to allow rotation of the armrest 22 from one of support and position. Retract from each other. They may for example comprise an axis of rotation about which the respective armrest 22 can pivot and a slot allowing the passage of the armrest 22 between the two support positions and the retracted position.

The stool assembly 3 and the backrest frame 2 are connected by the stool connecting piece 5; the entire lift chair can be folded and stored, and the folding method is that the backrest frame 2 is a fixed point, and the folding stool assembly 3 and the base 8 can be realized simultaneously. By setting the stool The connecting piece 5, in an initial state, can make the stool assembly 3 close to or adhere to the ground.

In this embodiment, the stool assembly 3 is connected to the lower part of the backrest frame 2 through the stool connecting piece 5 and the stool reinforcing rib 6. The first pivot 11 rotates in a direction close to the side of the backrest 2 until the stool assembly 3 is all in close contact with the side of the backrest frame 2, and the pivot 55 is directly used to make the backrest frame 2 and the stool assembly 3 Rotation can take place between the three, the stool reinforcing rib 6.

It should be noted that the upper surface of the stool assembly 3 is preferably in close contact with the front surface of the backrest frame 2, and the "close in" is to highlight the compact structure of the lift chair when it is folded and stored. The gap between two objects is less than 8mm, preferably less than 5mm or 2mm.

As shown in Figure 7, it is a structural schematic diagram of the stool connector 5 in this implementation. Specifically, the stool connector 5 includes a top plate 50, side plates 51 fixed on both sides of the top plate 50, and the bottom front end of the side plate 51 is downward. A mounting plate 52 is arranged; the top plate 50, the side plate 51 and the mounting plate 52 are fixedly connected and integrally formed; the structural strength and overall firmness of the entire stool connector 5 are improved, and the use safety is further ensured.

An assembly cavity 54 is formed between the top plate 50 and the two side plates 51, and the bottom of the backrest frame 2 is fixed in the assembly cavity 54; wherein, the side plate 51 and the mounting plate 52 are arranged horizontally, and the upper and lower ends of the connection between the side plate 51 and the mounting plate 52 are uniform. The circular arc transition structure 53 is provided, and the circular arc transition structure 53 avoids increasing the contact area when accidentally touching the elderly during use and storage, thereby ensuring the safety of use.

An S-shaped structure is formed between the side plate 51 and the mounting plate 52. The above-mentioned structure makes the connection between the stool component 3 and the back frame 2 more ingenious. The stool component 3 is located at the bottom of the back frame 2, and the stool component 3 can limit the It is close to the ground, and at the same time, it also avoids too much collision between the stool component 3 and the fixed frame 1. At the same time, it also enables the stool component 3 to be turned over 0-90°, which is convenient for storage.

The front side of the bottom of the mounting plate 52 is a circular arc structure 56, and a pivot 55 is installed between the two mounting plates 52. The pivot 55 is rotated to connect the upper end of the reinforcement rib 6 of the stool, and the lower end of the reinforcement rib 6 of the stool is fixed on the stool. Component 3 ends.

The stool assembly 3 includes a stool main frame 30 on which a stool 31 is installed; the stool 31 can be a flexible seat of fabric, leather or rubber or be made of synthetic polymer.

As shown in Figure 8, it is a structural schematic diagram of the stool reinforcing rib 6 in this implementation. Specifically, the stool reinforcing rib 6 includes a positioning plate 60, a reinforcing plate 61 assembled on both sides of the positioning plate 60, and the positioning plate 60 and the two sides The reinforcing plate 61 is fixedly connected and integrally formed. The structural strength and the overall firmness of the reinforcing rib 6 of the whole seat are improved, and the use safety is further guaranteed.

Moreover, the positioning plate 60 provided is located at the junction of the stool main frame 30 and the stool connector 5, making the design of the whole structure more ingenious. The positioning plate 60 is connected with the stool main frame 30 at 45°, so that the stool main frame 30 is more flexible during the folding process, and the positioning plate 60 just leans against the backrest frame 2 .

The bottom of the positioning plate 60 leans against the stool main frame 30, the upper end of the reinforcement plate 61 passes through the pivot 55, and the bottom of the reinforcement plate 61 is on the same level as the bottom of the stool main frame 30; it is set in this way so that the stool The main frame 30 can be close to or attached to the ground, which is convenient for the elderly to move to the stool.

When the lifting mechanism 4 is in the initial state and the stool assembly 3 is in the unfolded state, the bottom horizontal plane of the stool main frame 30 is lower than the bottom horizontal plane of the mounting plate 52; The distance, for example about 10-30mm. In this way, the stool main frame 30 can easily contact the ground. The thickness of the stool 31 is also thin enough to limit or avoid any obstruction of the patient on the ground. Especially once the patient on the ground is in a low position, he can slide onto the stool 31 easily. For this purpose, the thickness of the stool 31 is preferably less than 1 cm, preferably less than 5 mm. The stool assembly 3 can have a thickness of 1 to 2 cm to improve the overall structural strength and firmness.

The front end of fixed frame 1 is equipped with the wheel 18 that is used for promoting chair lift; And, wheel 18 is positioned at the base end surface of the front end of fixed frame 1; Move; Moreover, the wheels 18 are located at the front end of the fixed frame 1 and do not take up space.

The stool assembly 3 can be freely switched between the horizontal use state and the upright storage state. Moreover, armrests 22 are provided on both sides above the back frame 2 to switch from the horizontal use state to the upright storage state.

Therefore, when the stool assembly 3 and the armrests 22 are folded up and the base 8 is detached from the connecting plate 7 of the base assembly, the lift chair becomes compact without protrusions, thereby being stored in a small space for easy transportation. Also, it is preferable that the wheel 18 can freely change its rolling direction.

Of course, for the safety of the old man, a safety belt (not shown) can be set on the backrest 24 to keep safe when the stool 31 that the old man sits on is raised and lowered, because the old man will not accidentally fall from the chair, and then Ensure the safety of use.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model; Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Although this article uses many reference signs in the figure: fixed frame 1, backrest frame 2, stool assembly 3, lifting mechanism 4, stool connector 5, stool reinforcement rib 6, connecting plate 7, base 8, limit Position mechanism 9, limit groove mechanism 10, guide groove 11, limit groove 12, limit protrusion 13, arc structure 14, plug 15, welding plate 16, anchor 17, wheel 18, anchor hook 19, Connecting seat 20, handle seat 21, armrest 22, backrest rib 23, backrest 24, stool main frame 30, stool 31, lifting motor 40, lifting shaft 41, top plate 50, side plate 51, mounting plate 52, arc Transition structure 53, assembly cavity 54, pivot 55, arc structure 56, positioning plate 60, reinforcement plate 61, through hole 80, pin 81, pressure plate 90, limit hole 91, bolt 92, base assembly 100 and other terms, but The possibility of using other terms is not excluded; the use of these terms is only to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims (10)

1. The base assembly is characterized in that it includes connecting plates (7) fixed on both sides of the fixed frame (1), and the connecting plate (7) is detachably equipped with a base (8); one part of the connecting plate (7) A limiting groove mechanism (10) is formed at the side end, correspondingly, a pin (81) is formed on the inner side of the base (8), and the pin (81) is assembled in the limiting groove mechanism (10), and the outer side of the connecting plate (7) A limiting mechanism (9) for fastening the base (8) on the connecting plate (7) is provided. 2. The base assembly according to claim 1, characterized in that: the limit groove mechanism (10) includes a guide groove (11) and a limit groove (12); the guide groove (11) and the limit groove (12) ) are connected, wherein, the guide groove (11) is opened downward, and is arranged obliquely on the connecting plate (7), the limit groove (12) is connected with the guide groove (11), and the limit groove (12) is inclined from top to bottom Arrangement, the limit groove (12) and the guide groove (11) are connected to form a limit protrusion (13). 3. The base assembly according to claim 2, characterized in that: the guide groove (11) has a trumpet-shaped structure, and the end of the guide groove (11) has an arc-shaped structure (14). 4. The base assembly according to claim 1, characterized in that: the limit mechanism (9) includes a pressure plate (90) vertically fixed on the outside of the connecting plate (7), and the pressure plate (90) is attached to the base (8 ) upper surface, a limiting hole (91) is formed on the pressure plate (90), and correspondingly, a through hole (80) corresponding to the limiting hole (91) is formed on the base (8), and the through hole (80 ) and the limit hole (91) are fastened with bolts (92). 5. The base assembly according to claim 4, characterized in that plugs (15) are plugged into both sides of the base (8). 6. The base assembly according to claim 4, characterized in that: the two ends of the bottom of the base (8) are installed with feet (17), wherein, the middle of the bottom of the base (8) is provided with a foot hook ( 19). 7. A lift chair, characterized in that it includes a fixed frame (1), the fixed frame (1) is slidably connected to a backrest frame (2), the bottom of the backrest frame (2) is rotatably connected to a stool assembly (3), and the fixed frame A lifting mechanism (4) is installed between (1) and the backrest frame (2), and the lifting mechanism (4) drives the backrest frame (2) to move up and down on the fixed frame (1), and then drives the stool assembly (3) to lift The fixed frame (1) is assembled on the base assembly (100), and the base assembly (100) is the base assembly described in any one of claims 1-6. 8. The lift chair according to claim 7, characterized in that: the lifting mechanism (4) includes a lifting motor (40) fixed on the fixed frame (1), and the backrest frame (2) is connected to the lifting motor (40 ), the backrest frame (2) can move up and down along the lifting shaft (41). 9. The lift chair according to claim 7, characterized in that: the stool assembly (3) is connected to the backrest frame (2) through a stool connecting piece (5); the stool connecting piece (5) ) includes a top plate (50), side plates (51) fixed on both sides of the top plate (50), the bottom front end of the side plate (51) is downwardly arranged with a mounting plate (52); the top plate (50), side plates (51) It is fixedly connected with the installation plate (52) and integrally formed; an assembly cavity (54) is formed between the top plate (50) and the two side plates (51), and the bottom of the backrest frame (2) is fixed in the assembly cavity (54); Among them, the side plate (51) and the installation plate (52) are arranged horizontally, the upper and lower ends of the connection between the side plate (51) and the installation plate (52) are all arc transition structures (53), and the side plate (51) and the installation plate ( 52) form an S-shaped structure between them. 10. The lift chair according to claim 9, characterized in that: the front side of the bottom of the mounting plate (52) has a circular arc structure (56), and a pivot (55) is installed between the two mounting plates (52), The upper end of the stool reinforcement (6) is rotated on the pivot (55), and the lower end of the stool reinforcement (6) is fixed at the end of the stool component (3); the stool reinforcement (6) includes a positioning The plate (60) is assembled on the reinforcing plates (61) on both sides of the positioning plate (60), and the positioning plate (60) is fixedly connected with the reinforcing plates (61) on both sides, and formed integrally.