CN222584039U

CN222584039U - A footrest device

Info

Publication number: CN222584039U
Application number: CN202420564778.4U
Authority: CN
Inventors: 程军; 刘拥华; 何基; 郑捷; 徐进
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2024-03-21
Filing date: 2024-03-21
Publication date: 2025-03-11
Anticipated expiration: 2034-03-21

Abstract

The utility model provides a footrest device, comprising a first supporting part, a second supporting part and a third supporting part, which are connected in sequence and respectively form a first supporting surface, a second supporting surface and a third supporting surface; the footrest device has a folded state and a flat state, in which the first supporting surface, the second supporting surface and the third supporting surface are in the same plane and together constitute a complete footrest supporting surface; in the folded state, the first supporting surface, the second supporting surface and the third supporting surface are stacked up and down; compared with the prior art, in the flat state, the footrest device can form a footrest supporting surface with a larger area, and the legs and feet of a human body are placed on the first supporting part, the second supporting part and the third supporting part and supported by the footrest supporting surface, and the larger supporting surface can reduce the pressure, thereby reducing or even eliminating the pressure of the footrest device on the legs and feet of a human body, thereby improving the comfort of use.

Description

Foot rest device

Technical Field

The utility model relates to the field of furniture, in particular to a foot rest device.

Background

The chair is office furniture which is used for people to sit when working and learning, and the office staff can feel tired after sitting for a long time, so that the office staff needs to rest and relax after sitting for a long time in order to relieve working fatigue. The traditional office chair consists of a backrest, a seat cushion and supportable chair legs, wherein the positions of the backrest and the seat cushion are relatively fixed, and a person cannot lie down for rest. Office staff often need to purchase furniture suitable for lying down in addition to realize sitting, working and lying down for rest, but the space of an office place is occupied, so that the office staff is not suitable for offices with narrow space.

Some existing office chairs are equipped with foot rests, when the office chairs are used for resting, the foot rests can be pulled open, leg feet of a user can be placed on the foot rests to improve the comfort degree during resting, however, the width of the foot rests in the front-back direction is too narrow, the pressing sense of the foot rests on the legs of a human body is too strong, the user can feel uncomfortable after long use, even the situation of numbness of the leg feet occurs, and some foot rests used for seating articles such as sofas have the length for providing enough comfort degree, are not convenient to store and are not suitable for being used on the office chairs.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a foot rest device which comprises a first bearing part, a second bearing part and a third bearing part, wherein the first bearing part, the second bearing part and the third bearing part are sequentially connected, the first bearing part, the second bearing part and the third bearing part are respectively formed, the foot rest device is in a folded state and a flat state, the first bearing part, the second bearing part and the third bearing part are positioned on the same plane and form an integral foot rest bearing surface together in the flat state, in the folded state, the first bearing part, the second bearing part and the third bearing part are vertically stacked, in the flat state, compared with the prior art, the foot rest device can form a foot rest bearing surface with a larger area, the feet of a human body rest on the first bearing part, the second bearing part and the third bearing part are respectively formed, the foot rest bearing surface is in a bonding bearing state, the pressure intensity of the foot rest bearing surface can be reduced, the foot rest device can feel the pressure of the feet of the human body, the foot rest device is improved, the use comfort is improved, compared with the prior art, the foot rest device is more compact in the flat state, the same as the conventional sofa, and the sofa can be more suitable for the state, and the sofa is more compact, and the sofa can not occupy the same space.

The technical scheme of the utility model is realized as follows:

The foot rest device comprises a first bearing part, a second bearing part and a third bearing part, wherein the first bearing part, the second bearing part and the third bearing part are sequentially connected, a first bearing surface is formed on the first bearing part, a second bearing surface is formed on the second bearing part, a third bearing surface is formed on the third bearing part, the foot rest device is in a folding state and a tiling state, the first bearing surface, the second bearing surface and the third bearing surface are in the same plane in the tiling state, the first bearing surface, the second bearing surface and the third bearing surface form a complete foot rest bearing surface together, and the first bearing surface, the second bearing surface and the third bearing surface are vertically stacked in the folding state.

Compared with the prior art, the foot rest device can form a foot rest bearing surface with a larger area in a tiling state, the human leg feet are placed on the first bearing part, the second bearing part and the third bearing part and are supported by the foot rest bearing surface in a fitting mode, the pressure intensity can be reduced by the bearing surface with the larger area, so that the pressing feeling of the foot rest device on the human leg feet is relieved or even eliminated, the use comfort is improved, and moreover, compared with the existing large-area foot rest device, the foot rest device can be switched in state, has a folding state, is smaller in size in the folding state, reduces occupied space, and can be further adapted to more different seat types, and is especially different from a sofa for pursuing a simple and portable office chair.

Preferably, the first support portion, the second support portion and the third support portion are stacked in order from bottom to top in the folded state, and the first support portion, the second support portion and the third support portion are arranged in order from front to back in the flat state. Under folding state and tiling state, the relative position of first supporting portion, second supporting portion and third supporting portion is different for this foot rest device's shape changes, and its shape's change can produce different benefits to different states, like in tiling state, and straight shape lets first bearing face, second bearing face and third bearing face form a complete foot rest bearing face jointly, is favorable to human comfortable foot rest, and under folding state, the shape of range upon range of then is more favorable to taking in of foot rest device.

Preferably, when the folding state is switched to the laying state, the first bearing portion is turned forward from the lower direction of the second bearing portion, the third bearing portion is turned backward from the upper direction of the second bearing portion, and the first bearing portion and the third bearing portion rotate clockwise or anticlockwise. Under the folding state, the first bearing part and the third bearing part are positioned at different positions in the up-down direction of the second bearing part, but when the first bearing part and the third bearing part rotate, the first bearing part and the third bearing part rotate in the same direction and are arranged at different positions in the front-back direction of the second bearing part after the rotation is completed.

Preferably, the leg rest has a length in the flat condition which is greater than the length in the folded condition. In the same way, the thickness of the foot rest device in the flat-laid state is smaller than that in the folded state, and in the folded state, the foot rest device can have a shorter length, so that the foot rest device is favorable for being folded under a seat cushion, and in the flat-laid state, the foot rest device can have a longer length and a larger bearing area when having a width almost equal to that of a common foot rest, and can be supported from the foot step of a human body to the thigh part of the human body all the time, so that the pressure is dispersed, and the sense of compression is relieved.

Preferably, in the flat state, the first bearing surface, the second bearing surface and the third bearing surface are all upward, and in the folded state, the first bearing surface and the third bearing surface are both downward, and the second bearing surface is upward. Under the tiling state, first bearing face, second bearing face and third bearing face are upwards in order to be used for bearing human leg foot, under the folded state, first bearing portion, second bearing portion and third bearing portion are folded from the tiling gesture, therefore change the orientation of first bearing face and second bearing face.

Preferably, the first supporting portion comprises a first frame, the second supporting portion comprises a second frame, the third supporting portion comprises a third frame, and sponge cushions are arranged on the first frame, the second frame and the third frame.

Preferably, the first supporting portion includes a first frame, the second supporting portion includes a second frame, the third supporting portion includes a third frame, and mesh fabrics are stretched on the first frame, the second frame and the third frame.

Preferably, the first bearing part and the third bearing part are both overturned and arranged on the second bearing part, a driving structure is arranged between the second bearing part and the third bearing part, a driven structure is arranged between the second bearing part and the first bearing part, a push-pull piece is arranged between the driving structure and the driven structure, and the driving structure, the driven structure and the push-pull piece are configured so that when the third bearing part overturns relative to the second bearing part, the first bearing part overturns relative to the second bearing part under the action of the driving structure, the push-pull piece and the driven structure. When the third bearing portion moves, the driving structure, the push-pull piece and the driven structure are used for transmitting, the first bearing portion is given with the same-directional force, and the same-directional linkage of the third bearing portion and the first bearing portion is realized, so that the state of the foot rest device is switched, and the operation is convenient and fast.

Preferably, the driving structure comprises a first connecting rod, a second connecting rod, a first guide groove structure arranged between the first connecting rod and the third bearing part and a second guide groove structure arranged between the second connecting rod and the second bearing part, the driven structure comprises a third guide groove structure arranged between the push-pull piece and the first bearing part, the first connecting rod is respectively and rotatably connected with the first folding plate, the second connecting rod and the push-pull piece, the second connecting rod is rotatably connected with the second folding plate, the end part of the first bearing part is rotatably connected with the end part of the second bearing part, and a third connecting rod is further arranged between the second bearing part and the push-pull piece. The scheme can realize synchronous linkage of the first bearing part and the third bearing part, is convenient to operate, and can give the allowance of relative movement between the two rod pieces while the guide groove structure can realize relative rotation between the two rod pieces, so that linkage is smoothly carried out, and movement interference is prevented.

Preferably, the first guide groove structure comprises a first guide groove and a first sliding piece, the first guide groove is formed in the third supporting portion, the first sliding piece is arranged on the first connecting rod, the first sliding piece is arranged in the first guide groove, the second guide groove structure comprises a second guide groove and a second sliding piece, the second guide groove is formed in the first supporting portion, the second sliding piece is arranged on the second connecting rod, the second sliding piece is arranged in the second guide groove, the third guide groove structure comprises a third guide groove and a third sliding piece, the third guide groove is formed in the first supporting portion, the third sliding piece is arranged on the push-pull piece, and the third sliding piece is arranged in the third guide groove. When the bearing part moves, the sliding piece can move back and forth in the corresponding guide groove so as to realize the relative movement between the rod pieces.

The design starting point, the idea and the beneficial effects of the utility model adopting the technical scheme are as follows:

Drawings

FIG. 1 is a schematic perspective view of the leg rest apparatus in a flat-laid state in an embodiment of the present utility model;

FIG. 2 is a side view of the leg rest apparatus of the present utility model in an embodiment in a flat condition;

FIG. 3 is a schematic perspective view of the leg rest apparatus when switching between a flat state and a folded state in an embodiment of the present utility model;

FIG. 4 is a side view of the leg rest apparatus when switching between a flat condition and a folded condition in an embodiment of the utility model;

FIG. 5 is a schematic perspective view of the leg rest apparatus in a folded condition in an embodiment of the utility model;

FIG. 6 is a side view of the leg rest apparatus of the present utility model in a folded condition in an embodiment;

FIG. 7 is a schematic perspective view of a seat and leg rest apparatus according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram showing a second perspective view of the seat and the leg rest according to the embodiment of the present utility model;

FIG. 9 is a schematic view of the leg rest apparatus in an embodiment of the present utility model extended and retracted on a seat;

FIG. 10 is a schematic view of a seat with a space formed therein according to an embodiment of the present utility model;

FIG. 11 is a schematic view of the first bearing surface, the second bearing surface, and the third bearing surface forming a footrest bearing surface in a tiled state in an embodiment of the present utility model;

Fig. 12 is a schematic view showing the first support surface, the second support surface and the third support surface stacked in the folded state according to the embodiment of the present utility model.

The reference numerals are a middle support assembly 1, an upper support assembly 2, a lower support assembly 3, a seat 4, a telescopic assembly 5, a containing space 6, a base 7, a second frame 8, a push-pull member 9, a middle guide groove 10, a middle guide member 11, a third frame 12, a first connecting rod 13, a second connecting rod 14, a third connecting rod 15, a first frame 16, a first guide groove 17, a first sliding member 18, a third guide groove 19, a third sliding member 20, a second guide groove 21, a second sliding member 22, a first bearing surface 101, a second bearing surface 102, a third bearing surface 103 and a leg rest bearing surface 100.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific embodiments of the present utility model are as follows:

As shown in fig. 11 and 12, the utility model provides a leg rest device, which comprises a first bearing part, a second bearing part and a third bearing part, wherein the first bearing part, the second bearing part and the third bearing part are sequentially connected, a first bearing surface 101 is formed on the first bearing part, a second bearing surface 102 is formed on the second bearing part, a third bearing surface 103 is formed on the third bearing part, the leg rest device has a folding state and a tiling state, the first bearing surface 101, the second bearing surface 102 and the third bearing surface 103 are positioned on the same plane in the tiling state, and form a complete leg rest bearing surface 100 together, and the first bearing surface 101, the second bearing surface 102 and the third bearing surface 103 are stacked up and down in the folding state.

Compared with the prior art, in the flat state, the leg rest device can form a leg rest bearing surface 100 with a larger area, the human leg and foot parts are placed on the first bearing part, the second bearing part and the third bearing part and are supported by the leg rest bearing surface 100 in a fitting way, the pressure intensity of the bearing surface with the larger area can be reduced, so that the pressing feeling of the leg rest device on the human leg and foot part is relieved or even eliminated, the use comfort is improved, and furthermore, compared with the existing large-area leg rest device, the leg rest device can be switched in state, has a folding state, is smaller and more exquisite in the folding state, reduces occupied space, and can be further adapted to more different seat types, and is especially different from a sofa for pursuing compact and lightweight office chairs.

Specifically, the leg rest device is compared with the two states, namely, in a folded state, a first bearing part, a second bearing part and a third bearing part are sequentially stacked from bottom to top, in a flat state, the first bearing part, the second bearing part and the third bearing part are sequentially arranged from front to back, the length of the leg rest device in the flat state is larger than that of the leg rest device in the folded state, the thickness of the leg rest device in the flat state is smaller than that of the leg rest device in the folded state, in the flat state, the first bearing surface 101, the second bearing surface 102 and the third bearing surface 103 are all upward, in the flat state, the first bearing surface 101 and the third bearing surface 102 are downward, and in the flat state, the second bearing surface 103 is upward.

The first bearing part comprises a first frame 16, the second bearing part comprises a second frame 8, the third bearing part comprises a third frame 12, sponge cushions are arranged on the first frame 16, the second frame 8 and the third frame 12, and mesh fabrics are stretched on the first frame 16, the second frame 8 and the third frame 12, so that the bearing part comprises a frame and the sponge cushions. And a driving structure, a push-pull piece and a driven structure are arranged among the first bearing part, the second bearing part and the third bearing part.

As shown in figures 1-6, the foot rest device on a moving structure specifically comprises a middle supporting component 1, at least one upper supporting component 2 and at least one lower supporting component 3, wherein the upper supporting component 2 and the lower supporting component 3 are respectively arranged at two ends of the middle supporting component 1, the upper supporting component 2 and the lower supporting component 3 are respectively arranged in a rotating mode relative to the middle supporting component 1, the upper supporting component 2 and the lower supporting component 3 are in linkage through the middle supporting component 1, the foot rest device is provided with a folding state and a tiling state, the upper supporting component 2 is arranged above the middle supporting component 1 in the folding state, the lower supporting component 3 is arranged below the middle supporting component 1, the foot rest device is in a multi-layer stacked mode, the upper supporting component 2 and the lower supporting component 3 are respectively arranged at the front side and the rear side of the middle supporting component 1 in the tiling state, when the folding state is switched to the tiling state, the upper supporting component 2 is arranged above the middle supporting component 1 and rotates in the front side of the middle supporting component 1 in the rear direction, the upper supporting component 2 and the lower supporting component 3 are in the folding state and the folding state acts on the upper supporting component 2 and the lower supporting component 3 in the front of the folding state, and the lower supporting component is in the folding state of the folding state and the folding state is in the folding state, and the upper supporting component is in the folding state of the folding state, and the upper supporting component is in the front of the upper side of the lower supporting component 3 and the upper supporting component is in the folding state, and the upper supporting component is in the upper side of the upper supporting component and lower supporting component 3.

The leg rest device is provided with the multi-section supporting component, can support leg steps of a human body in a large range from the aspect of supporting area, reduces the sense of compression, greatly improves the use comfort, is low in packaging and transportation cost due to the multi-section supporting component from the aspect of structure, can be switched between a stacking state and a tiling state, can reduce occupied space, and is simpler and more convenient to operate due to the linkage characteristic from the aspect of operation.

As shown in fig. 7-10, the leg rest device is applied to a seat, the seat comprises a seat base 4 and the leg rest device, the seat base 4 is connected with the leg rest device through a telescopic assembly 5, the telescopic assembly 5 is configured to stretch the leg rest device forwards to extend out of the front of the seat base 4, the telescopic assembly 5 is folded to enable the leg rest device to be folded below the seat base 4, a containing space 6 is formed by sinking below the front of the seat base 4, and when the telescopic assembly 5 is folded, the leg rest device is folded in the containing space 6. When the telescopic component 5 is folded, the leg rest device is folded in the accommodating space 6, so that the effect of reducing the space utilization rate and enhancing the integration of the seat is achieved, the structure is reasonable and attractive, and after the telescopic component 5 is lengthened, the leg rest device can be positioned in front of the seat 4 in a tiled state, and a large-range and comfortable leg and foot support is provided.

In order to achieve reasonable space utilization, ergonomics and comfort, an automatic tilting function is designed for the foot rest device, and specifically, the foot rest device further comprises a base 7, a middle supporting component 1 is rotatably arranged on the base 7, the middle supporting component 1 comprises a second frame 8 and a push-pull piece 9, the second frame 8 is rotatably connected with the base 7, the push-pull piece 9 is connected with the base 7 through a guide groove structure, the push-pull piece 9 is connected with the second frame 8 through two swing connecting rods which are arranged at intervals, the push-pull piece 9 is configured to move from a folded state to a flat state, the push-pull piece 9 drives the second frame 8 to rotate relative to the base 7 under the effect of the guide groove structure, and enables the upper supporting component 2, the middle supporting component 1 and the lower supporting component 3 to tilt front and back in the flat state, further, a middle guide groove 10 is formed in the push-pull piece 9, the middle guide groove 10 is a waist-shaped groove which is bent upwards, a middle guide piece 11 is arranged on the base 7, and the middle guide piece 11 is arranged in the middle guide groove 10 and drives the middle supporting component to rotate relative to the second frame 7 when the foot rest device is switched between the folded state and the middle supporting component and the second frame 7.

The scheme realizes the automatic tilting function of the foot rest device, namely, in a flat state, the middle support assembly 1, the upper support assembly 2 and the lower support assembly 3 can tilt at a certain angle, the feet of a human body can naturally rest on the foot rest device, so that the comfort is improved, in a folded state, the feet of the human body can return to a horizontal posture and can be folded back below the seat 4 in a fitting way, further, two swing connecting rods arranged at intervals enable the second frame 8, the push-pull piece 9 and the connecting rods between the two to form a four-bar mechanism, so that the linkage of the second frame 8 and the push-pull piece 9 is realized, the middle guide groove 10 is characterized by an automatic tilting basis, the rotation of the second frame 8 and the push-pull piece 9 relative to the base 7 is realized through the change of different positions and angles of the middle guide piece 11 in the middle guide groove 10, and the middle guide piece 11 mainly plays a role in realizing that the foot rest device has an angle change under the folded state and the flat state, and particularly in the flat state, the tilting is more suitable for the human body.

In order to realize synchronous movement of the upper support assembly 2 and the lower support assembly 3, in the embodiment, the upper support assembly 2 comprises a third frame 12, a first connecting rod 13 and a second connecting rod 14, the middle support assembly 1 comprises a third connecting rod 15, a second frame 8 and a push-pull member 9, the lower support assembly 3 comprises a first frame 16, the first connecting rod 13 is connected with the third frame 12 through a first guide groove structure, the second connecting rod 14 is rotationally connected with the third frame 12 and the first connecting rod 13, the second connecting rod 14 is connected with the second frame 8 through a second guide groove structure, the rear end part of the second frame 8 is connected with the rear end part of the push-pull member 9 through the first connecting rod 13, the front part of the second frame 8 is rotationally connected with the front end of the second frame 8, the first frame 16 is connected with the front end of the push-pull member 9 through a third guide groove structure, when the third frame 12 is driven to move, the third frame 12 drives the first connecting rod 13 to move relative to the second connecting rod 14 and the second connecting rod 13 and the second connecting rod 9, and the second connecting rod 8 can move relative to the first frame 8 and the push-pull member 9. In this scheme, upper support subassembly 2 and lower support subassembly 3 can realize synchronous motion, and when expanding upper support subassembly 2, lower support subassembly 3 also expands thereupon, convenient operation is simple.

If the third frame 12 and the first frame 16 are required to rotate relative to the second frame 8, the third frame 12 and the first frame 16 are required to be rotationally connected to the second frame 8, but if the synchronous movement of the third frame 12 and the first frame 16 is required to be realized, a plurality of linkage members are not necessary between the third frame 12 and the first frame 16, the linkage members in this embodiment are a connecting rod member and a guide groove structure, the connecting rod member is used for connecting and driving, the guide groove structure is used for defining a movement track, so that the linkage can be realized while the preset action is performed, for example, the second frame 8, the push-pull member 9 and the connecting rod between the two members form a four-bar mechanism, the use of the guide groove structure is reserved, the guide member can move back and forth in the guide groove structure, and meanwhile, the relative rotation between the two members can be realized, and the movement between the two members can be realized relative to and relative to the guide groove.

Specifically, the guide groove structure between the third frame 12 and the first link 13 includes a first guide groove 17 and a first sliding member 18, the first sliding member 18 is disposed at an end of the first link 13, the first guide groove 17 is disposed on the third frame 12, the first sliding member 18 is disposed in the first guide groove 17, the guide groove structure between the push-pull member 9 and the base 7 is not repeated, the guide groove structure between the first frame 16 and the push-pull member 9 includes a third guide groove 19 and a third sliding member 20, the third guide groove 19 is disposed at a rear end of the first frame 16, the third sliding member 20 is disposed at a front end of the push-pull member 9, the third sliding member 20 is disposed in the third guide groove 19, the guide groove structure is used for driving the first frame 16 to move, the guide groove structure between the second link 14 and the second frame 8 includes a second guide groove 21 and a second sliding member 22, the second guide groove 21 is disposed on the second frame 8, the second sliding member 22 is disposed at an end of the second link 14, the second sliding member 22 is disposed in the second guide groove 21 and is disposed in the second frame 21, when the second link 14 is switched between the first and the second frame 12, and the second frame 12 can move in a sliding state relative to the second frame 12, and the second sliding member 12 can move in a sliding state relative to the guide groove 12 and the guide groove is configured to move in the first guide groove and the second guide groove 12 and the second guide groove.

Further illustratively, the driving structure includes a first link, a second link, and first and second channel structures, and the driven structure includes a third channel structure.

More specifically, the first link 13 is substantially T-shaped and has three ends, the three ends are respectively used for rotationally connecting the third frame 12, the second frame 8 and the push-pull member 9, two swinging links between the second frame 8 and the push-pull member 9 are the first link 13 and the third link 15, the second link 14 is substantially U-shaped, two ends of the second link are connected with the third frame 12 and the second frame 8, the middle of the second link is rotationally connected with the first link 13, and when the third frame 12 moves through the first link 13 and the second link 14, the second frame 8 and the push-pull member 9 are linked without interference, and the first frame 16 is linked.

Claims

1. A foot rest device is characterized by comprising a first bearing part, a second bearing part and a third bearing part, wherein the first bearing part, the second bearing part and the third bearing part are sequentially connected, a first bearing surface is formed on the first bearing part, a second bearing surface is formed on the second bearing part, a third bearing surface is formed on the third bearing part, the foot rest device is in a folding state and a tiling state, the first bearing surface, the second bearing surface and the third bearing surface are in the same plane in the tiling state, the first bearing surface, the second bearing surface and the third bearing surface form an integral foot rest bearing surface together, and the first bearing surface, the second bearing surface and the third bearing surface are stacked up and down in the folding state.

2. The leg rest apparatus according to claim 1, wherein the first support portion, the second support portion, and the third support portion are stacked in this order from bottom to top in the folded state, and the first support portion, the second support portion, and the third support portion are arranged in this order from front to back in the flat state.

3. The leg rest apparatus according to claim 2, wherein the first support portion is turned forward from the lower side of the second support portion, the third support portion is turned backward from the upper side of the second support portion, and the first support portion and the third support portion are rotated clockwise or counterclockwise when the folded state is switched to the flat state.

4. The leg rest apparatus of claim 2, wherein the length of the leg rest apparatus in the flat position is greater than the length in the folded position.

5. The leg rest apparatus of claim 1, wherein in the flat position, the first support surface, the second support surface, and the third support surface are each oriented upward, and wherein in the folded position, the first support surface and the third support surface are each oriented downward, and the second support surface is oriented upward.

6. The leg rest apparatus of claim 1, wherein the first support portion comprises a first frame, the second support portion comprises a second frame, the third support portion comprises a third frame, and the first frame, the second frame, and the third frame are each provided with a sponge cushion.

7. The leg rest apparatus of claim 1, wherein the first support portion comprises a first frame, the second support portion comprises a second frame, the third support portion comprises a third frame, and the first frame, the second frame, and the third frame are each stretched with a mesh.

8. The leg rest apparatus according to claim 1, wherein the first support portion and the third support portion are both disposed on the second support portion in a turned-over manner, a driving structure is disposed between the second support portion and the third support portion, a driven structure is disposed between the second support portion and the first support portion, a push-pull member is disposed between the driving structure and the driven structure, and the driving structure, the driven structure and the push-pull member are configured such that when the third support portion is turned over relative to the second support portion, the first support portion is turned over relative to the second support portion under the action of the driving structure, the push-pull member and the driven structure.

9. The leg rest apparatus according to claim 8, wherein the driving structure comprises a first link, a second link, a first guide groove structure arranged between the first link and the third support portion, and a second guide groove structure arranged between the second link and the second support portion, the driven structure comprises a third guide groove structure arranged between the push-pull member and the first support portion, the first link is respectively rotatably connected with the first folding plate, the second link, and the push-pull member, the second link is rotatably connected with the second folding plate, an end portion of the first support portion is rotatably connected with an end portion of the second support portion, and a third link is further provided between the second support portion and the push-pull member.

10. The leg rest apparatus according to claim 9, wherein the first guide groove structure includes a first guide groove and a first slider, the first guide groove is provided on the third support portion, the first slider is provided on the first link, the first slider is provided in the first guide groove, the second guide groove structure includes a second guide groove and a second slider, the second guide groove is provided on the second support portion, the second slider is provided on the second link, the second slider is provided in the second guide groove, the third guide groove structure includes a third guide groove and a third slider, the third guide groove is provided on the first support portion, the third slider is provided on the push-pull member, and the third slider is provided in the third guide groove.