Turnover footrest device

Abstract

The invention provides a turnover footrest device which comprises a main supporting piece, a first supporting piece, a second supporting piece and a linkage piece, the linkage piece and the second supporting piece are both rotationally connected to the main supporting piece, the first supporting piece is rotationally connected to the linkage piece, and the linkage piece is in linkage with the first supporting piece and the second supporting piece, so that the first supporting piece and the second supporting piece are in mutual linkage; in the state switching process, the first supporting piece rotates on the linkage piece and drives the linkage piece to rotate on the main supporting piece at the same time, then the linkage piece drives the second supporting piece to rotate, and under the condition that only the first supporting piece is turned over, the second supporting piece is turned over. The folding state that the first and second supporting pieces are attached to each other and the unfolding state that the first and second supporting pieces are parallel front and back can be obtained, and operation is easy and convenient; in the folded state, the first supporting piece and the second supporting piece are smaller in size after being attached, and packaging and transportation are convenient; in the unfolded state, the width of the foot rest bearing face formed by the first supporting piece and the second supporting piece is larger, and more comfortable leg and foot supporting can be provided.

Description

Technical Field

[0001] The invention relates to the field of furniture, and in particular to a flip footrest device. Background Art

[0002] Chairs are office furniture for people to sit on when working or studying. Office workers will feel tired after sitting for a long time. In order to relieve work fatigue, office workers need to rest and relax after sitting for a long time. Traditional office chairs are composed of backrests, seat cushions and supporting legs. The positions of backrests and seat cushions are relatively fixed, and people cannot lie down to rest. Office workers usually need to purchase furniture suitable for lying down to realize sitting and working, but this requires office space and is not suitable for offices with narrow space.

[0003] Traditional office chairs do not have footrests. When people sit on such office chairs to rest, their feet can only be placed at 90 degrees to their knees. At this time, people's feet are on the ground or suspended from the ground. However, since the feet are not active when resting, leg discomfort or even foot numbness will occur over time. Therefore, people have developed a retractable footrest installed under the seat of the office chair. When people need to sit on the chair to work, the footrest can be retracted and hidden under the seat of the office chair. At this time, the footrest will not affect people's normal work; when people need to sit on the chair to rest, they can stretch out the footrest, and then straighten their feet and place them on the footrest of the footrest to improve people's comfort when resting and reduce or avoid discomfort.

[0004] Since the footrest needs to take into account the requirements of easy storage and comfort, the existing footrests are of a shorter width. In addition, the telescopic rod matched with the footrest is fixed in length, so the footrest can only support the human calf and foot. The footrest exerts greater pressure on the human legs and feet, and will also cause discomfort after long-term use. For example, patent number 202122114206.5 is a footrest structure used on chairs; with the careful research of technicians, the footrests on the seats are also developing in different directions. The most important point is to increase the width of the footrest as much as possible. , so that the footrest can support a larger area of ​​human legs and feet, reduce the sense of pressure given by the footrest, and thus improve the comfort of using the footrest, such as the patent number 202220295212.7, a foldable student chair for naps, and the patent number 201710370999.2, a foldable leg support mechanism and a seat; however, these improved footrests are all telescopic, and the user needs to pull the front end forward to extend the footrest, which is very inconvenient to operate, and the overall size is large, the space occupied is also large, and the cost of packaging and transportation will also increase. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides a flip footrest device, including a main support member, a first support member, a second support member and a linkage member, the linkage member and the second support member are both rotatably connected to the main support member, the first support member is rotatably connected to the linkage member, and the linkage member is linked with the first and second support members, so that the first and second support members are linked with each other; when the state is switched, the first support member rotates on the linkage member while also driving the linkage member to rotate on the main support member, and then the linkage member drives the second support member to rotate, and it is achieved that when only the first support member is flipped, the first and second support members can be in a folded state in which they are in close contact with each other and in an expanded state in which they are arranged front and back in parallel, and the operation is simple and convenient; in the folded state, the first and second support members are smaller in size after being close to each other, which is convenient for packaging and transportation; in the expanded state, the footrest support surface formed by the first and second support members is larger in width, which can provide more comfortable leg and foot support.

[0006] The technical solution of the present invention is achieved in this way: A flip footrest device comprises a main support member, a first support member, a second support member and a linkage member, wherein the linkage member is rotatably connected to the main support member, the first support member is rotatably arranged on the linkage member and is linked with the linkage member, and the second support member is rotatably connected to the main support member and is linked with the linkage member; when the first support member is driven to rotate on the linkage member, the first support member drives the linkage member to rotate on the main support member, and the rotation of the linkage member drives the second support member to rotate on the main support member; the first support member has a first supporting surface for fitting the leg and foot, and the second support member has a second supporting surface for fitting the leg and foot. The flip footrest device also has a folded state and an unfolded state. In the folded state, the first support member and the second support member are close to each other, and the first supporting surface and the second supporting surface are arranged opposite to each other; in the unfolded state, the first support member and the second support member are arranged side by side front and back and the first supporting surface and the second supporting surface face upward, and the first supporting surface and the second supporting surface jointly form a footrest supporting surface; when switching from the folded state to the unfolded state, the rotation angle of the first support member is greater than the rotation angle of the second support member.

[0007] Preferably, a connecting rod is provided between the second support member and the linkage member, one end of the connecting rod is rotatably connected to the linkage member, and the other end of the connecting rod is rotatably connected to the second support member. The second support member, the connecting rod, the linkage member and the main support member form a four-bar linkage to drive the second support member to move.

[0008] Preferably, the second support member is provided with an avoidance groove at the end close to the linkage member, and the connecting rod member is located in the avoidance groove. The existence of the avoidance groove prevents motion interference between the second support member and the connecting rod member, ensuring smooth motion during state switching.

[0009] Preferably, a first gear is fixedly provided on the main support member, a second gear is fixedly provided on the first support member, the first gear meshes with the second gear, a first receiving groove and a second receiving groove that are interconnected are provided on the linkage member, the first gear is located in the first receiving groove, and the second gear is located in the second receiving groove; a first rotating shaft is provided on the main support member at the center of the first gear, and the linkage member and the main support member are rotationally connected through the first rotating shaft; a second rotating shaft is provided on the first support member at the center of the second gear, and the linkage member and the first support member are rotationally connected through the second rotating shaft. The first rotating shaft position is the rotation center of the linkage member, and the second rotating shaft position is eccentrically set relative to the first rotating shaft. When the first support member rotates around the second rotating shaft, under the action of gear meshing, the first support member also revolves relative to the first rotating shaft. At this time, since the second rotating shaft is eccentric relative to the first rotating shaft, the first support member will also drive the linkage member to rotate around the first rotating shaft to achieve the linkage between the two.

[0010] Preferably, in the folded state, the first support member and the second support member are folded under the main support member, the rotation point of the first support member is located below the main support member, and the rotation point of the second support member is located on the main support member and in front of the main support member; in the unfolded state, the rotation point of the first support member rotates to above the main support member and is located beside the rotation point of the second support member, and the first support member faces rearward and is located above the main support member. In the folded state, the first and second support members are all below the main support member, while in the unfolded state, when the human body rests their feet, if the main support member is still above, it will be abrupt and obstructive, so the first support member is required to be above the main support member; only after the rotation point of the first support member rotates from below to above can the first support member as a whole be above the main support member, and this point is also mainly achieved by the above-mentioned gear meshing structure.

[0011] Preferably, in the folded state, the first support member and the second support member are parallel to each other, and when the state is switched, the rotation angle of the first support member is 180° greater than the rotation angle of the second support member, so that an integral footrest support surface can be formed after flipping and linkage.

[0012] Preferably, an elastic support component is provided between the linkage member and the main support member, and the elastic support component is configured to always give the linkage member a forward elastic force and keep the flip footrest device in a current state.

[0013] Preferably, in the folded state, the first support member and the second support member are folded under the main support member, and the point of action of the elastic support component on the linkage member is located above the rotation point of the linkage member; in the unfolded state, the point of action of the elastic support component on the linkage member is located below the rotation point of the linkage member.

[0014] Preferably, the elastic support assembly includes a sliding rod, a sliding seat, and a spring disposed between the sliding rod and the sliding seat, the sliding seat is rotatably disposed on the main support member, the sliding rod is rotatably disposed on the linkage member, the sliding rod is inserted into the sliding seat and slidably cooperates with the sliding seat. When the state is switched, the action point of the elastic support assembly on the linkage member will change, so the elastic support assembly of the present solution has the ability to slide and rotate to adapt to the movement of the linkage member, and the spring always gives the linkage member a forward elastic force.

[0015] Preferably, the first support member includes a first supporting portion for supporting the legs and feet of a human body and a first connecting portion for connecting the linkage member, the first supporting portion and the first connecting portion are connected to each other, the second support member includes a second supporting portion for supporting the legs and feet of a human body and a second connecting portion for connecting the main support member, the second supporting portion and the second connecting portion are connected to each other; in the folded state, the first supporting portion is located beside the second supporting portion and the first connecting portion is also located beside the second connecting portion; in the unfolded state, the first supporting portion is located beside the second supporting portion and the second connecting portion is located below the first connecting portion; the second connecting portion has an arc, and in the unfolded state, the second connecting portion bends downward. The first support member and the second support member realize their relative positions in the folded and unfolded states through the above-mentioned specific structure.

[0016] Preferably, the linkage is circular, a circular mounting groove is provided on the main support, the linkage is arranged in the mounting groove, and the left and right ends of the first support and the second support are in contact with the linkage; the main support is provided with a first gear, the first gear is located in the mounting groove, the first gear is located in the linkage and is rotatably connected to the linkage, the first support is provided with a second gear, the second gear is located in the linkage and is rotatably connected to the linkage, the first gear is meshed with the second gear, and the first gear and the second gear are configured so that the first support turns over to drive the linkage to rotate; the linkage is recessed on the same side to form a first receiving groove and a second receiving groove, the first receiving groove is connected to the second receiving groove, the first gear and the second gear are respectively located in the first receiving groove and the second receiving groove; the second gear is detachably connected to the first support by screws. This makes the structure internally enclosed, reduces the risk of pinching hands, and prevents debris from falling into the interior, causing internal jamming and damage.

[0017] The design starting point, concept and beneficial effects of the present invention using the above technical solution are: In the folded state, the first support member and the second support member fit together and are convenient to be folded under the seat of the chair. In the unfolded state, the footrest supporting surface formed by the first support surface and the second support surface is larger, which can provide a more comfortable footrest experience. Structurally, the first support member and the second support member are cleverly linked. Although the first support member is only rotatably set on the linkage member, it can drive the linkage member to rotate on the main support member. Although the second support member is rotatably connected to the main support member, it can rotate with the rotation of the first support member under the action of the linkage member, so that the state switching can be achieved by only flipping the first support member.

[0018] In the unfolded state, the flip footrest device has a larger footrest supporting surface, which is formed by two supporting members that are originally abutted against each other, rather than being formed by a large footrest board like a pull-out footrest. Therefore, the flip footrest device has a smaller overall size and occupies a smaller volume in the folded state, which is beneficial to reducing the cost of packaging and transportation. When operating, it is only necessary to flip the first supporting member, which is more convenient than the pull-out method, and the body does not need to lean forward too much, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the flip footrest device in the folded state in Example 1 of the present invention; Figure 2 is a schematic diagram of the three-dimensional structure of the flip footrest device in the unfolded state in Example 1 of the present invention; Figure 3 is a side view of the flip footrest device in the folded state in Example 1 of the present invention; Figure 4 is a side view of the flip footrest device in the unfolded state in Example 1 of the present invention; Figure 5 is a cross-sectional view of the flip footrest device in the unfolded state in Example 1 of the present invention; Figure 6 It is a schematic diagram of the internal components of the main support member in the folded state in Example 1 of the present invention; Figure 7 It is a schematic diagram of the internal components of the main support member in the unfolded state in Example 1 of the present invention; Figure 8 It is a schematic diagram of the positions of the first and second gears in the folded state in Example 1 of the present invention; Fig. 9 It is a schematic diagram of the positions of the first and second gears in the unfolded state in Example 1 of the present invention; Fig.10 A schematic diagram of the relative positions of the linkage member and the main support member in the folded state in Example 1 of the present invention; Fig.11It is a schematic diagram of the equivalent positions of the linkage member and the main support member in the unfolded state in Example 1 of the present invention; Fig.12 Schematic diagram of the three-dimensional structure of the linkage member in Example 1 of the present invention Figure 1 ; Fig.13 Schematic diagram of the three-dimensional structure of the linkage member in Example 1 of the present invention Figure 2 ; Fig.14 is a cross-sectional view of the flip footrest device in the folded state in Example 2 of the present invention; Fig.15 is a cross-sectional view of the flip footrest device in the unfolded state in Example 2 of the present invention; Fig.16 It is a schematic diagram of a three-dimensional structure in which a linkage member is arranged on a main support member and a second gear is arranged on the linkage member in Example 2 of the present invention; Fig.17 It is a schematic diagram of the three-dimensional structure of the linkage member in Example 2 of the present invention; Fig.18 This is a schematic diagram of the three-dimensional structure of the main support member in Example 2 of the present invention.

[0020] The figures are marked as follows: main support member 1; first support member 2; first supporting portion 21; first connecting portion 22; second support member 3; second supporting portion 31; second connecting portion 32; linkage member 4; first supporting surface 5; second supporting surface 6; connecting rod member 7; avoidance groove 8; first gear 9; second gear 10; first accommodating groove 11; second accommodating groove 12; first rotating shaft 13; second rotating shaft 14; sliding rod 15; sliding seat 16; spring 17; slide groove 18. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0023] In the description of the present invention, the terms “first”, “second”, “third”, etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0024] The specific implementation methods of the present invention are as follows: Example

[0025] like Figure 1-5 As shown, the present invention provides a flip footrest device, comprising a main support member 1, a first support member 2, a second support member 3 and a linkage member 4, wherein the linkage member 4 is rotatably connected to the main support member 1, the first support member 2 is rotatably arranged on the linkage member 4 and is linked to the linkage member 4, and the second support member 3 is rotatably connected to the main support member 1 and is linked to the linkage member 4; when the first support member 2 is driven to rotate on the linkage member 4, the first support member 2 drives the linkage member 4 to rotate on the main support member 1, and the rotation of the linkage member 4 drives the second support member 3 to rotate on the main support member 1; the first support member 2 has a first support member for fitting the legs and feet. The first support member 2 and the second support member 3 have a second support surface 5, and the second support member 3 has a second support surface 6 for fitting the legs and feet. The flip footrest device also has a folded state and an unfolded state. In the folded state, the first support member 2 and the second support member 3 are abutted together, and the first support surface 5 and the second support surface 6 are arranged opposite to each other; in the unfolded state, the first support member 2 and the second support member 3 are arranged side by side front and back, and the first support surface 5 and the second support surface 6 face upward, and the first support surface 5 and the second support surface 6 jointly form a footrest supporting surface; when switching from the folded state to the unfolded state, the rotation angle of the first support member 2 is greater than the rotation angle of the second support member 3.

[0026] In the folded state, the first support member 2 and the second support member 3 fit together and are convenient to be folded under the seat of the chair. In the unfolded state, the footrest support surface formed by the first support surface 5 and the second support surface 6 is larger, which can provide a more comfortable footrest experience. Structurally, the first support member 2 and the second support member 3 are cleverly linked. Although the first support member 2 is only rotatably set on the linkage member 4, it can drive the linkage member 4 to rotate on the main support member 1. Although the second support member 3 is rotatably connected to the main support member 1, it can rotate with the rotation of the first support member 2 under the action of the linkage member 4, so that the state switching can be achieved by only flipping the first support member 2.

[0027] In the unfolded state, the flip footrest device has a larger footrest supporting surface, which is formed by two supporting members that are originally abutted against each other, rather than being formed by a large footrest board like a pull-out footrest. Therefore, the flip footrest device has a smaller overall size and occupies a smaller volume in the folded state, which is beneficial to reducing the cost of packaging and transportation. When operating, it is only necessary to flip the first supporting member 2, which is more convenient than the pull-out method, and the body does not need to lean forward too much, thereby improving the user experience.

[0028] In general, most footrests on the market only have a support surface at the front end. This device has a larger support surface and is more comfortable; compared with other large-format flip footrests, its structure is simpler.

[0029] Specifically, if Figure 1-4As shown in , 7, 9-11, the first support member 2 includes a first supporting portion 21 for supporting the legs and feet of a human body and a first connecting portion 22 for connecting the linkage member 4, the first supporting portion 21 and the first connecting portion 22 are fixedly connected to each other, the second support member 3 includes a second supporting portion 31 for supporting the legs and feet of a human body and a second connecting portion 32 for connecting the main support member 1, the second supporting portion 31 and the second connecting portion 32 are fixedly connected to each other; a first supporting surface 5 is formed on the first supporting portion 21, and a second supporting surface 6 is formed on the second supporting portion 31; in the folded state, the first supporting portion 21 is located beside the second supporting portion 31 and the first connecting portion 22 is also located beside the second connecting portion 32, and the first supporting surface 5 and the second supporting surface 6 are facing oppositely; in the unfolded state, the first supporting portion 21 is located beside the second supporting portion 31, and the second connecting portion 32 is located at the first Below the connecting portion 22, the first supporting surface 5 and the second supporting surface 6 are both facing the upper front; the second connecting portion 32 has an arc, and in the expanded state, the second connecting portion 32 bends downward; the first support member 2 and the second support member 3 realize the relative positions between the two in the folded and expanded states through the above-mentioned specific structure; in the folded state, the first support member 2 and the second support member 3 are parallel to each other, and when the state is switched, the rotation angle of the first support member 2 is 180° larger than the rotation angle of the second support member 3, so as to form an integral footrest supporting surface after flipping and linkage; wherein, the rotation angle of the first support member 2 is the rotation angle of the second gear 10, and the revolution angle of the second gear 10 around the first gear 9 is the rotation angle of the linkage member 4, and the rotation angle of the linkage member 4 and the rotation angle of the connecting rod member 7 together determine the rotation angle of the second support member 3.

[0030] like Figure 5-7 As shown, a connecting rod member 7 is provided between the second support member 3 and the linkage member 4, one end of the connecting rod member 7 is rotatably connected to the linkage member 4, and the other end of the connecting rod member 7 is rotatably connected to the second connecting portion 32 of the second support member 3. The second support member 3, the connecting rod member 7, the linkage member 4 and the main support member 1 form a four-bar linkage to drive the second support member 3 to move; the second connecting portion 32 of the second support member 3 is provided with an avoidance groove 8 at the end close to the linkage member 4, and the connecting rod member 7 is located in the avoidance groove 8. In the folded state, most of the connecting rod member 7 is located outside the avoidance groove 8, and the part rotatably connected to the second connecting portion 32 is also located in the avoidance groove 8; in the unfolded state, the connecting rod member 7 is located in the avoidance groove 8; the existence of the avoidance groove 8 prevents motion interference between the second support member 3 and the connecting rod member 7, thereby ensuring smooth movement during state switching.

[0031] Furthermore, if Figure 8 , 9As shown in , 12 and 13, a first gear 9 is fixedly provided on the main support member 1, a second gear 10 is fixedly provided on the first support member 2, the first gear 9 meshes with the second gear 10, a first receiving groove 11 and a second receiving groove 12 which are connected to each other are provided on the linkage member 4, the first gear 9 is located in the first receiving groove 11, and the second gear 10 is located in the second receiving groove 12; the first gear 9 is integrally formed with the main support member 1, the second gear 10 is integrally formed with the first connecting portion 22 of the first support member 2, and is located at the end of the first connecting portion 22; a first rotating shaft 13 is provided on the main support member 1 at the center of the first gear 9, and the linkage member 4 is connected to the main support member 1 at the center of the first gear 9. The support member 1 is rotatably connected via the first rotating shaft 13; a second rotating shaft 14 is provided on the first support member 2 at the center of the second gear 10, and the linkage member 4 is rotatably connected to the first support member 2 via the second rotating shaft 14; the position of the first rotating shaft 13 is the rotation center of the linkage member 4, and the position of the second rotating shaft 14 is eccentrically arranged relative to the first rotating shaft 13. When the first support member 2 rotates around the second rotating shaft 14, under the action of gear meshing, the first support member 2 also revolves relative to the first rotating shaft 13. At this time, since the second rotating shaft 14 is eccentric relative to the first rotating shaft 13, the first support member 2 will also drive the linkage member 4 to rotate around the first rotating shaft 13 to achieve linkage between the two.

[0032] In the folded state, the first support member 2 and the second support member 3 are folded under the main support member 1, the rotation point of the first support member 2 is located below the main support member 1, and the rotation point of the second support member 3 is located on the main support member 1 and in front of the main support member 1; in the unfolded state, the rotation point of the first support member 2 rotates to above the main support member 1 and is located beside the rotation point of the second support member 3, and the first support member 2 faces rearward and is located above the main support member 1; in the folded state, the first and second support members 3 are entirely below the main support member 1, while in the unfolded state for human body to rest their feet, if the main support member 1 is still above it, it will appear abrupt and get in the way, so the first support member 2 is required to be above the main support member 1; only after the rotation point of the first support member 2 rotates from below to above can the first support member 2 as a whole be above the main support member 1, and this point is also mainly achieved by the above-mentioned gear meshing structure.

[0033] Furthermore, if Figure 5-7As shown, an elastic support component is provided between the linkage member 4 and the main support member 1, and the elastic support component is configured to always give the linkage member 4 a forward elastic force and keep the flip footrest device in the current state; because in the folded state, the first support member 2 and the second support member 3 are folded under the main support member 1, the action point of the elastic support component on the linkage member 4 is located above the rotation point of the linkage member 4; and in the unfolded state, the action point of the elastic support component on the linkage member 4 is located below the rotation point of the linkage member 4; when switching from the folded state to the unfolded state, the action point of the elastic support component rotates from the top to the bottom; in the folded state, the action point of the elastic support component is at the upper part of the linkage member 4 and gives the lower part of the linkage member 4 an elastic force to rotate backward, so that the first support member 2 and the second support member 3 can be folded under the main support member 1; in the unfolded state, the action point of the elastic support component is at the lower part of the linkage member 4 and gives the upper part of the linkage member 4 an elastic force to rotate backward, thereby maintaining the first and second support members 3 in a posture of being unfolded one after the other, so as to support the legs and feet of the human body.

[0034] Specifically, the elastic support assembly includes a sliding rod 15, a sliding seat 16 and a spring 17 arranged between the sliding rod 15 and the sliding seat 16. The sliding seat 16 is rotatably arranged on the main support member 1, and the sliding rod 15 is roughly facing forward and rotatably arranged on the linkage member 4. The rear end of the sliding rod 15 is inserted in the sliding seat 16 and slidably cooperates with the sliding seat 16. The rear end of the sliding rod 15 is also provided with a sliding groove 18, and the sliding seat 16 and the rotating shaft of the main support member 1 are arranged in the sliding groove 18 as a sliding limit; the spring 17 is sleeved on the sliding rod 15 and the two ends of the spring 17 are respectively abutted on the front end of the sliding rod 15 and the sliding seat 16 to provide forward elastic force for the sliding rod 15 and the linkage member 4; when the state is switched, the action point of the elastic support assembly on the linkage member 4 will change, so the elastic support assembly of this scheme has the ability to slide and rotate to adapt to the movement of the linkage member 4, and at the same time, the spring 17 always gives the linkage member 4 a forward elastic force.

[0035] The main support member 1 serves as the main support of the flip footrest device. The main support member 1 is generally two groups of telescopic tubes arranged at intervals on the left and right. The first support member 2, the second support member 3, the linkage member 4, and the connecting rod member 7 are all arranged between the two telescopic tubes. The flip footrest device is arranged on the seat or chassis of the seat through the main support member 1; the main support member 1 and the front part thereof are provided with a mounting groove, the sliding seat 16 is arranged in the mounting groove, and the mounting groove can also avoid the sliding and rotation of the sliding rod 15.

[0036] The linkage member 4 is block-shaped and has three eccentric parts, which are respectively rotatably connected to the connecting rod member 7, the first support member 2 and the sliding rod 15. When the first support member 2 rotates, the rotation of the linkage member 4 can drive the connecting rod member 7 and the sliding rod 15 to move, thereby realizing the function of the linkage member 4.

[0037] The operation method of the flip footrest device is simple. Unlike the existing flip footrest, it is not necessary to pull it out first. When flipping the footrest, the flip footrest device of the present scheme only needs to pull the first support member 2 to flip forward while pulling out the seat, and after there is enough space for flipping backward, continue to flip the first support member 2 backward. After the flipping is completed, continue to push the first support member 2 and the second support member 3 forward to achieve a suitable footrest position. The user does not need to lean forward too much or get up from the seat to operate.

[0038] Embodiment 2: The difference between this embodiment and embodiment 1 is that the main support member encloses the linkage member; specifically: like Figure 14-18 As shown, the linkage member 4 is circular, a circular mounting groove is provided on the main support member 1, the linkage member 4 is arranged in the mounting groove, and the left and right ends of the first support member 2 and the second support member 3 are in contact with the linkage member 4; a first gear 9 is provided on the main support member 1, the first gear 9 is located in the mounting groove, the first gear 9 is located in the linkage member 4 and is rotatably connected to the linkage member 4, a second gear 10 is provided on the first support member 2, the second gear 10 is located in the linkage member 4 and is rotatably connected to the linkage member 4, the first gear 9 is meshed with the second gear 10, and the first gear 9 and the second gear 10 are configured so that the first support member 2 turns over to drive the linkage member 4 to rotate; a first accommodating groove 11 and a second accommodating groove 12 are formed on the same side of the linkage member 4, and the first accommodating groove 11 and the second accommodating groove 12 are formed, and the first accommodating groove 11 and the second accommodating groove 12 are connected. 2 is connected, the first gear 9 and the second gear 10 are respectively located in the first accommodating groove 11 and the second accommodating groove 12; in order to prevent the linkage member 4 from falling out of the installation groove, a screw is provided on the first gear 9, and the screw passes through the linkage member 4 and is arranged on the first gear 9; a sleeve is also sleeved on the screw, and along the axial direction, the sleeve is located beside the first gear 9, and the sleeve contacts the linkage member 4, which is used to block the linkage member 4 and avoid abnormal noise caused by metal friction; in this way, the structure is wrapped inward, reducing the risk of pinching hands and avoiding debris from falling into the interior, causing internal jamming and damage; the second gear 10 is detachably connected to the first support member 2 by a screw, so that the second gear 10 can smoothly pass through the linkage member 4 to be connected to the first support member 2, and is located in the accommodating groove on the same side as the first gear 9.

Claims

1. A flip footrest device, characterized in that: The footrest device comprises a main support member, a first support member, a second support member and a linkage member, wherein the linkage member is rotatably connected to the main support member, the first support member is rotatably arranged on the linkage member and is linked with the linkage member, and the second support member is rotatably connected to the main support member and is linked with the linkage member; when the first support member is driven to rotate on the linkage member, the first support member drives the linkage member to rotate on the main support member, and the rotation of the linkage member drives the second support member to rotate on the main support member; the first support member has a first supporting surface for fitting the leg and foot, and the second support member has a second supporting surface for fitting the leg and foot, and the flip footrest device also has a folded state and an unfolded state, in which the first support member and the second support member are abutted together, and the first supporting surface and the second supporting surface are arranged facing each other; in the unfolded state, the first support member and the second support member are arranged side by side front and back and the first supporting surface and the second supporting surface face upwards, and the first supporting surface and the second supporting surface jointly form a footrest supporting surface; when switching from the folded state to the unfolded state, the rotation angle of the first support member is greater than the rotation angle of the second support member.

2. The flip footrest device according to claim 1, characterized in that: A connecting rod is arranged between the second supporting member and the linkage member, one end of the connecting rod is rotatably connected to the linkage member, and the other end of the connecting rod is rotatably connected to the second supporting member.

3. The flip footrest device according to claim 2, characterized in that: The second supporting member is provided with an avoidance groove at the end portion close to the linkage member, and the connecting rod member is located in the avoidance groove.

4. The flip footrest device according to claim 1, characterized in that: A first gear is fixedly provided on the main support member, a second gear is fixedly provided on the first support member, the first gear is meshed with the second gear, a first accommodating groove and a second accommodating groove which are connected to each other are provided on the linkage member, the first gear is located in the first accommodating groove, and the second gear is located in the second accommodating groove; a first rotating shaft is provided on the main support member at the center of the first gear, and the linkage member and the main support member are rotatably connected via the first rotating shaft; a second rotating shaft is provided on the first support member at the center of the second gear, and the linkage member and the first support member are rotatably connected via the second rotating shaft; in a folded state, the first support member and the second support member are folded under the main support member, the rotation point of the first support member is located below the main support member, and the rotation point of the second support member is located on the main support member and in front of the main support member; in an unfolded state, the rotation point of the first support member rotates to above the main support member and is located beside the rotation point of the second support member, and the first support member faces rearward and is located above the main support member.

5. The flip footrest device according to claim 1, characterized in that: In the folded state, the first support member and the second support member are parallel to each other. When the states are switched, the rotation angle of the first support member is 180° greater than the rotation angle of the second support member.

6. The flip footrest device according to claim 1, characterized in that: An elastic support component is arranged between the linkage component and the main support component, and the elastic support component is configured to always give the linkage component a forward elastic force and keep the flip footrest device in a current state.

7. The flip footrest device according to claim 6, characterized in that: In the folded state, the first support member and the second support member are folded under the main support member, and the action point of the elastic support component on the linkage member is located above the rotation point of the linkage member; In the unfolded state, the action point of the elastic support component on the linkage member is located below the rotation point of the linkage member.

8. The flip footrest device according to claim 6, characterized in that: The elastic support assembly includes a sliding rod, a sliding seat and a spring arranged between the sliding rod and the sliding seat. The sliding seat is rotatably arranged on the main support member, the sliding rod is rotatably arranged on the linkage member, and the sliding rod is inserted in the sliding seat and slidably cooperates with the sliding seat.

9. The flip footrest device according to claim 1, characterized in that: The first support member includes a first supporting portion for supporting the legs and feet of a human body and a first connecting portion for connecting a linkage member, and the first supporting portion and the first connecting portion are connected to each other; the second support member includes a second supporting portion for supporting the legs and feet of a human body and a second connecting portion for connecting a main support member, and the second supporting portion and the second connecting portion are connected to each other; in a folded state, the first supporting portion is located beside the second supporting portion and the first connecting portion is also located beside the second connecting portion; in an unfolded state, the first supporting portion is located beside the second supporting portion, and the second connecting portion is located below the first connecting portion; the second connecting portion has an arc, and in the unfolded state, the second connecting portion bends downward.

10. The flip footrest device according to claim 1, characterized in that: The linkage member is circular, and a circular mounting groove is provided on the main support member. The linkage member is arranged in the mounting groove, and the left and right ends of the first support member and the second support member are in contact with the linkage member; a first gear is provided on the main support member, and the first gear is located in the mounting groove. The first gear is located in the linkage member and is rotatably connected to the linkage member. A second gear is provided on the first support member, and the second gear is located in the linkage member and is rotatably connected to the linkage member. The first gear is meshed with the second gear, and the first gear and the second gear are configured so that the first support member flips and drives the linkage member to rotate; a first accommodating groove and a second accommodating groove are formed in the same side recess of the linkage member, and the first accommodating groove is connected to the second accommodating groove, and the first gear and the second gear are respectively located in the first accommodating groove and the second accommodating groove; the second gear and the first support member are detachably connected by screws.

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