Pedal drive structure and seat

Abstract

This utility model relates to the field of furniture technology and discloses a foot pedal transmission structure and a seat. The foot pedal transmission structure and seat include: a base assembly with a rotatable first tooth; a foot bracket connected to the base assembly by a transmission component, the transmission component having a second tooth that can mesh with the first tooth. When the second tooth meshes with the first tooth and rotates, it can drive the foot bracket away from the base assembly or move closer to the base assembly through the transmission component. This utility model can realize the opening or retraction of the foot bracket by rotation and reduce the number of linkage transmission structures required in the entire foot pedal transmission, thereby reducing the space requirements and reducing the risk of the transmission component touching the ground during operation. It is also applicable to long foot pedals and improves the stability of using the foot pedal function.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a foot pedal transmission structure and a seat. Background Technology

[0002] To improve the user experience of seating, some seats are equipped with foot pedals. When needed, the foot pedal can be pulled out from the seat; when not in use, it can be retracted back onto the seat, thus reducing the space occupied by the foot pedal. There are various ways to connect the foot pedal to the seat. For example, when the foot pedal is connected to the seat using a multi-link mechanism, if a long foot pedal is used, it is easy for it to touch the ground during opening or retraction, causing a jamming effect and even affecting its normal use. Therefore, there is an urgent need for a more versatile foot pedal transmission structure. Utility Model Content

[0003] The purpose of this utility model is to provide a foot pedal transmission structure and a seat to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A foot pedal transmission structure includes: a base assembly having a rotatable first tooth; a foot bracket connected to the base assembly by a transmission assembly, the transmission assembly having a second tooth capable of meshing with the first tooth; when the second tooth meshes with the first tooth and rotates, the transmission assembly can drive the foot bracket away from the base assembly, or drive the foot bracket closer to the base assembly.

[0006] This technical solution has at least the following beneficial effects: The base assembly provides connection and positioning for the footrest, on which a foot pedal can be installed to provide support for the user's feet during use. When the foot pedal function is not needed, the first tooth on the base assembly rotates, and the meshing of the first and second teeth transmits power to the transmission assembly, thereby moving the footrest closer to the base assembly, so that the footrest is in a retracted state. When the foot pedal function is needed, the first tooth on the base reverses, and the meshing of the first and second teeth, through the transmission assembly, moves the footrest away from the base assembly, opening it outwards. During the opening or retraction of the footrest, the power transmission through the first and second teeth enables the footrest to rotate and open or retract, reducing the number of linkage transmission structures required in the entire foot pedal transmission, thereby reducing the space requirements, reducing the risk of the transmission assembly touching the ground during operation, and is also applicable to longer foot pedals, improving the stability of using the foot pedal function.

[0007] As a further improvement to the above technical solution, the transmission assembly includes a transmission block and a first rotating pair. The transmission block and the first rotating pair are respectively rotatably disposed on the base assembly. The transmission block is connected to the first rotating pair in a transmission manner. The second tooth is disposed on the transmission block. The foot bracket is disposed on the first rotating pair. The transmission block can drive the first rotating pair to rotate closer to or away from the base assembly.

[0008] As a further improvement to the above technical solution, the first rotating pair includes a first connecting rod and a second connecting rod. One end of the first connecting rod is rotatably connected to the base assembly, and the other end of the first connecting rod is rotatably connected to the foot bracket. One end of the second connecting rod is eccentrically rotatably connected to the transmission block, and the other end of the second connecting rod is rotatably connected to the foot bracket.

[0009] As a further improvement to the above technical solution, the second tooth portion includes a plurality of transmission teeth formed on the outside of the transmission block, and the plurality of transmission teeth are arranged around the rotation axis of the transmission block.

[0010] As a further improvement to the above technical solution, the base assembly includes a leg bracket, and the first tooth is disposed on the leg bracket.

[0011] As a further improvement to the above technical solution, the base assembly also includes a folding portion disposed on the leg bracket, the folding portion being located on the side of the leg bracket away from the foot bracket, and the folding portion being capable of telescopic movement.

[0012] As a further improvement to the above technical solution, a drive block is rotatably connected to the leg bracket, and the first tooth includes a plurality of drive teeth formed on the outside of the drive block, the drive teeth being arranged around the rotation axis of the drive block.

[0013] As a further improvement to the above technical solution, the folding part is connected to the driving block in a transmission manner, and the folding part can drive the driving block to rotate when it is folded.

[0014] As a further improvement to the above technical solution, the folding part includes a first connecting rod, a second connecting rod, and a second rotating joint. One end of the first connecting rod is rotatably connected to the leg bracket, and one end of the second connecting rod is eccentrically rotatably connected to the drive block. The other ends of the first connecting rod and the other ends of the second connecting rod are respectively connected to the second rotating joint for transmission. The second rotating joint can rotate relative to the leg bracket to move closer to or further away from it.

[0015] As a further improvement to the above technical solution, the second rotating pair includes a third link and a fourth link, the third link and the fourth link are arranged at intervals, the top ends of the third link and the top ends of the fourth link are respectively formed with rotating connection points, the bottom end of the third link is rotatably connected to the end of the first link away from the leg bracket, the bottom end of the fourth link is rotatably connected to the position of the first link near the third link, and the bottom end of the fourth link is rotatably connected to the end of the second link away from the drive block.

[0016] As a further improvement to the above technical solution, the first link includes a connecting section and an inclined section that are connected to each other. The inclined section is inclined upward along the direction close to the leg bracket. The bottom end of the third link is rotatably connected to the end of the connecting section away from the inclined section. The bottom end of the fourth link is rotatably connected to the connection between the connecting section and the inclined section. The top end of the inclined section is rotatably connected to the leg bracket.

[0017] As a further improvement to the above technical solution, the folding part further includes a linear drive component, which is connected to the third link or the fourth link in a transmission manner.

[0018] As a further improvement to the above technical solution, the second link is connected to a transmission frame, and the movable end of the linear drive is rotatably connected to the transmission frame.

[0019] A seating arrangement includes a seat frame, the aforementioned foot pedal transmission structure, and a base assembly disposed on the seat frame.

[0020] This technical solution has at least the following beneficial effects: In this seat, a seat cushion, seat board, and other structures can be installed on the seat frame to provide support when the user sits down. When the foot pedal function is needed, the footrest can be rotated to open away from the seat. When the foot pedal function is not needed, the footrest can be rotated to retract towards the seat. During the opening or retraction of the footrest, since power is transmitted through the first and second teeth, the number of linkage transmission structures required in the entire foot pedal transmission can be reduced, thereby reducing the space requirements and lowering the risk of the transmission components touching the ground during activity. This is also applicable to longer foot pedals, improving the stability of using the foot pedal function.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the foot pedal transmission structure of this utility model, at which point the foot support is close to the base assembly.

[0024] Figure 2 This is a schematic diagram of the foot pedal transmission structure of this utility model, at which point the foot support gradually moves closer to or further away from the base assembly.

[0025] Figure 3 This is a schematic diagram of the foot pedal transmission structure of this utility model, in which the foot support is far away from the base assembly.

[0026] Figure 4 This is a perspective view of the seat of this utility model, with the footrest close to the base assembly.

[0027] Figure 5 This is a schematic diagram of the internal structure of the seat of this utility model, with the footrest close to the base assembly.

[0028] Figure 6 This is a perspective view of the seating of this utility model, in which the footrest is far from the base assembly.

[0029] Figure 7 This is a schematic diagram of the internal structure of the seat of this utility model, in which the footrest is far away from the base assembly.

[0030] In the attached diagram: 110-Leg bracket, 111-First tooth, 112-Drive block, 120-Folding part, 121-First connecting rod, 1211-Connecting section, 1212-Inclined section, 122-Second connecting rod, 123-Third connecting rod, 124-Fourth connecting rod, 130-Linear drive component, 131-Transmission frame, 200-Foot bracket, 210-Transmission block, 211-Second tooth, 220-First rotating pair, 221-First connecting rod, 222-Second connecting rod, 300-Seat frame. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Reference Figures 1 to 3 A foot pedal transmission structure includes a base assembly and a foot bracket 200. The base assembly has a rotatable first tooth 111. A transmission assembly is connected between the foot bracket 200 and the base assembly. The transmission assembly has a second tooth 211 that can mesh with the first tooth 111. When the second tooth 211 meshes with the first tooth 111 and rotates, it can drive the foot bracket 200 away from the base assembly or move closer to the base assembly through the transmission assembly.

[0037] As described above, the base assembly provides connection and positioning for the footrest 200. A foot pedal can be installed on the footrest 200 to provide support for the user's feet during use. When the foot pedal function is not needed, the first tooth 111 on the base assembly rotates, and the meshing of the first tooth 111 and the second tooth 211 transmits power to the transmission assembly, thereby moving the footrest 200 closer to the base assembly, resulting in a retracted footrest 200. When the foot pedal function is needed, the first tooth 111 on the base rotates in reverse, and the meshing of the first tooth 111 and the second tooth 211 transmits power to the transmission assembly, thereby moving the footrest 200 closer to the base assembly, resulting in a retracted footrest 200. When the foot pedal function is needed, the first tooth 111 on the base rotates in reverse, and the meshing of the first tooth 111 and the second tooth 211 transmits power to the transmission assembly, thereby moving the footrest 200 closer to the base assembly, resulting in a retracted footrest 200. The engagement of part 211 drives the foot bracket 200 away from the base assembly via the transmission assembly, opening outward from the base assembly. During the opening or retraction of the foot bracket 200, power is transmitted through the first tooth 111 and the second tooth 211, which enables the foot bracket 200 to rotate and open or retract. This reduces the number of linkage transmission structures required in the entire foot pedal transmission, thereby reducing the space requirements and lowering the risk of the transmission assembly touching the ground during operation. This is also applicable to longer foot pedals, improving the stability of using the foot pedal function.

[0038] In practical applications, foot brackets 200 are provided on both sides of the base assembly, and the two foot brackets 200 respectively connect and support the two sides of the foot pedal.

[0039] When the second tooth 211 in the transmission assembly is subjected to power transmission, the rod-shaped structure in the transmission assembly can slide back and forth to drive the foot bracket 200 closer to or away from the base assembly. If it is necessary to drive the foot bracket 200 closer to or away from the base assembly by rotation, in this embodiment, the transmission assembly includes a transmission block 210 and a first rotating joint 220. The transmission block 210 and the first rotating joint 220 are respectively rotatably disposed on the base assembly. The transmission block 210 and the first rotating joint 220 are connected in a transmission manner. The second tooth 211 is disposed on the transmission block 210, and the foot bracket 200 is disposed on the first rotating joint 220. The transmission block 210 can drive the first rotating joint 220 to rotate closer to or away from the base assembly. When the second tooth 211 transmits power to the first tooth 111, the transmission block 210 rotates and drives the first rotating pair 220 to rotate on the base assembly, thereby moving the foot bracket 200 closer to or further away from the base assembly.

[0040] In order to enable the footrest 200 to rotate relative to the first rotating joint 220 when it is opened or closed, thereby achieving further storage, in this embodiment, the first rotating joint 220 includes a first connecting rod 221 and a second connecting rod 222. One end of the first connecting rod 221 is rotatably connected to the base assembly, and the other end of the first connecting rod 221 is rotatably connected to the footrest 200. One end of the second connecting rod 222 is eccentrically rotatably connected to the transmission block 210, and the other end of the second connecting rod 222 is rotatably connected to the footrest 200. The first linkage 221, the base assembly, the transmission block 210, and the second linkage 222 can form a four-link mechanism. When the foot bracket 200 needs to be opened, the transmission block 210 rotates, and the first linkage 221 and the second linkage 222 can be driven to rotate and unfold from the base assembly. The foot bracket 200 is also driven to rotate away from the first linkage 221 and the second linkage 222. Similarly, when the foot bracket 200 needs to be retracted, the transmission block 210 reverses, and the first linkage 221 and the second linkage 222 can be driven to retract to the base assembly. The foot bracket 200 is also driven to rotate and approach the first linkage 221 and the second linkage 222. At this time, the foot bracket 200, the first linkage 221, and the second linkage 222 are folded back onto the base assembly, greatly reducing the volume occupied by the foot bracket 200 after it is retracted.

[0041] In practical use, the transmission block 210 is connected to one side of the base assembly, while one end of the first linkage 221 is rotatably connected to the other side of the base assembly. This allows the first linkage 221 and the second linkage 222 to be staggered, reducing mutual interference during movement. One end of the first linkage 221 can be bent away from the second linkage 222 and then connected to the base assembly. The other end of the first linkage 221 can be provided with a columnar structure protruding towards the foot bracket 200, which facilitates connection to the foot bracket 200. This makes the structure of the first linkage 221 more compact.

[0042] The second toothed portion 211 primarily drives the transmission assembly through toothed power transmission. Its structural form can vary; for example, a gear can be mounted on the transmission block 210, directly meshing with the first toothed portion 111. To further simplify the structure, in this embodiment, the second toothed portion 211 includes multiple transmission teeth formed on the outer side of the transmission block 210, arranged around the rotation axis of the transmission block 210. By directly forming transmission teeth for power transmission on the outer side of the transmission block 210, and having multiple transmission teeth covering the rotation path of the transmission block 210, the power transmission structure is further simplified. The transmission block 210 itself both transmits power and acts as a connecting rod to drive the second connecting rod 122 to rotate.

[0043] In the above embodiments, the base assembly can be a single fastener connected to the seat, in which case the entire assembly only has a foot pedal function. However, to further enrich the functionality, the foot pedal transmission structure can also be equipped with a leg support function. Specifically, the base assembly includes a leg support 110, with the first tooth 111 disposed on the leg support 110. A leg pad can be installed on the leg support 110 to provide support for the user's legs. When the first tooth 111 is disposed on the leg support 110, when the first tooth 111 rotates, it can transmit power to the second tooth 211, thereby causing the footrest 200 to move closer to or away from the leg support 110.

[0044] Naturally, one end of the transmission block 210 and the first linkage rod 221 are also rotatably connected to the leg bracket 110, with the position connected to the leg bracket 110 as the pivot point, driving the foot bracket 200 to unfold or retract.

[0045] For the rotation of the first tooth 111 and the second tooth 211, a motor can be installed on the leg bracket 110, which drives either the first tooth 111 or the second tooth 211 to rotate, while the other rotates as a driven component. Alternatively, no drive source can be installed on the leg bracket 110, and an external power source can be used to drive either the first tooth 111 or the second tooth 211, thereby enabling the movement of the foot bracket 200.

[0046] In addition to being fixedly mounted on the seat, the leg rest 110 can also be opened or retracted to enrich its functionality, thereby reducing its space occupation when not in use. Specifically, the base assembly also includes a folding portion 120 disposed on the leg rest 110. The folding portion 120 is located on the side of the leg rest 110 away from the footrest 200, and the folding portion 120 is telescopic. The folding portion 120 is used to connect to an external structure, such as the seat frame 300 of the seat. The folding portion 120 itself can be unfolded or folded back. When the folding portion 120 is unfolded, the leg rest 110 can be opened away from the seat frame 300; when the folding portion 120 is retracted, the leg rest 110 can be retracted towards the seat frame 300.

[0047] Similarly, a gear can be installed on the leg support 110. In this case, the gear is used as the first tooth 111 to transmit power to the second tooth 211. To further simplify the transmission structure, in this embodiment, a drive block 112 is rotatably connected to the leg support 110. The first tooth 111 includes multiple drive teeth formed on the outside of the drive block 112, and the drive teeth are arranged around the rotation axis of the drive block 112. During production, multiple drive teeth are directly formed on the outside of the drive block 112 around the rotation axis of the drive block 112. The multiple drive teeth are located on the rotation path of the drive block 112, which further simplifies the power transmission structure. The drive block 112 itself is used for both power transmission and as a connecting rod to drive the folding part 120 to rotate.

[0048] The folding part 120 can be directly connected to the drive block 112. In this case, the folding part 120 will not transmit power to the drive block 112 when it moves, or the power of the folding part 120 can be directly transmitted to the drive block 112. In this way, the linkage between the folding part 120 and the drive block 112 can be realized. Specifically, the folding part 120 is connected to the drive block 112. When the folding part 120 folds, it can drive the drive block 112 to rotate. When the folding part 120 unfolds or folds back, its internal unfolding or folding structure transmits power to the drive block 112, causing the drive block 112 to rotate. This enables the folding part 120 to extend and retract, thereby driving the drive block 112 to rotate. For example, when the folding part 120 unfolds, it causes the leg support 110 to open outwards, and at the same time, it causes the drive block 112 to rotate, causing the foot support 200 to open away from the leg support 110. Alternatively, when the folding part 120 folds back, it causes the leg support 110 to retract, and at the same time, it causes the drive block 112 to rotate, causing the foot support 200 to retract towards the leg support 110.

[0049] There are multiple ways to fold the folding part 120 to achieve unfolding or retraction. Specifically, the folding part 120 includes a first connecting rod 121, a second connecting rod 122, and a second rotating joint. One end of the first connecting rod 121 is rotatably connected to the leg bracket 110, and one end of the second connecting rod 122 is eccentrically rotatably connected to the drive block 112. The other ends of the first connecting rod 121 and the other ends of the second connecting rod 122 are respectively connected to the second rotating joint for transmission. The second rotating joint can rotate relative to the leg bracket 110 to move closer to or further away from it. The second rotating joint can be used to connect to structural components of external devices, such as the seat frame 300 of a chair. When the second rotating joint rotates, the leg support 110 and the drive block 112 can be rotated through the first link 121 and the second link 122. At this time, the first link 121 and the second link 122 can also rotate relative to the second rotating joint, realizing folding and unfolding at the same time. For example, when the second rotating joint rotates out from the seat frame 300 of the chair, the first link 121 and the second link 122 can also be gradually unfolded relative to the second rotating joint, thereby opening the leg support 110, and the drive block 112 can be rotated on the leg support 110 by the second link 122. When the second rotating joint rotates back from the seat frame 300 of the chair, the first link 121 and the second link 122 can also be gradually folded back relative to the second rotating joint, thereby retracting the leg support 110, and the drive block 112 can be rotated in the opposite direction on the leg support 110 by the second link 122.

[0050] As a specific embodiment of the second rotating joint, the second rotating joint includes a third link 123 and a fourth link 124. The third link 123 and the fourth link 124 are arranged at intervals. The top ends of the third link 123 and the fourth link 124 respectively form rotating connection points. The bottom end of the third link 123 is rotatably connected to the end of the first link 121 away from the leg bracket 110. The bottom end of the fourth link 124 is rotatably connected to the first link 121 near the third link 123. The bottom end of the fourth link 124 is rotatably connected to the end of the second link 122 away from the drive block 112. The rotating connection points formed at the top ends of the third link 123 and the fourth link 124 are respectively used to connect to the structural components of the external device, such as the seat frame 300 of the seat. At this time, the structural components of the external device, the third link 123, the fourth link 124 and the first link 121 can form a four-bar linkage. In use, the power source of the external device drives the third link 123 or the fourth link 124 to rotate. When the leg support 110 is needed, the third link 123 and the fourth link 124 rotate outward from the seat frame 300. At this time, the first link 121 and the second link 122 can be pushed outward in an unfolded state, thereby opening the leg support 110. When the leg support 110 is not needed, the third link 123 and the fourth link 124 rotate and retract into the seat frame 300. At this time, the first link 121 and the second link 122 can be folded inward, thereby retracting the leg support 110.

[0051] To better raise the height of the leg support 110 when the first link 121 is pushed outward, the first link 121 and the second link 122 are inclined upward after being unfolded, thus lifting the leg support 110 upward. Specifically, the first link 121 includes a connecting section 1211 and an inclined section 1212 that are connected to each other. The inclined section 1212 is inclined upward in a direction close to the leg support 110. The bottom end of the third link 123 is rotatably connected to the end of the connecting section 1211 away from the inclined section 1212. The bottom end of the fourth link 124 is rotatably connected to the connection between the connecting section 1211 and the inclined section 1212. The top end of the inclined section 1212 is rotatably connected to the leg support 110. The connecting section 1211 of the first link 121 is used to connect the third link 123 and the fourth link 124. At this time, the connecting section 1211, the third link 123, the fourth link 124 and the seat frame 300 form a four-bar linkage. The inclined section 1212, which is inclined upward, is conducive to raising the installation height of the leg support 110. When the third link 123 and the fourth link 124 rotate, the connecting section 1211 drives the inclined section 1212 to act on the leg support 110. Together with the second link 122, the leg support 110 is supported by the drive block 112, so that the leg support 110 moves upward when it is opened, or moves downward when it is retracted.

[0052] The folding section 120 may not have an internal drive source; instead, an external drive source can power any component within the folding section 120. Alternatively, it may have a drive source such as a motor or rotary cylinder to rotate any one of the third link 123 or the fourth link 124. In this embodiment, the folding section 120 also includes a linear drive 130, which can be any of an electric screw, a cylinder, or a hydraulic cylinder. The linear drive 130 is connected to either the third link 123 or the fourth link 124. The linear drive 130 can transmit power to either the third link 123 or the fourth link 124, or simultaneously drive both the third link 123 and the fourth link 124, causing them to rotate around their rotational connection point. This allows for direct control of the folding and unfolding or retracting of the folding section 120.

[0053] When the linear drive component 130 is connected to the second link 122, the movable end of the linear drive component 130 can be directly hinged or universally connected to the second link 122. To improve the structural stability of the transmission connection, in this embodiment, the second link 122 is connected to a transmission frame 131, and the movable end of the linear drive component 130 is rotatably connected to the transmission frame 131. By rotatably connecting the transmission frame 131 to the movable end of the linear drive component 130, a structure that is compatible with the movable end of the linear drive component 130 can be easily set on the transmission frame 131, improving the convenience and structural stability of the connection. In practical applications, one end of the transmission frame 131 is used to fix the second link 122, and the other end can form two spaced-apart connecting parts extending to both sides of the movable end of the linear drive component 130. Rotatably connecting the movable end of the linear drive component 130 to the two connecting parts can improve the stability of the transmission connection with the second link 122.

[0054] A type of seating, such as Figures 4 to 7 As shown, the device includes a seat frame 300 and the aforementioned foot pedal transmission structure. The base assembly is mounted on the seat frame 300. To enrich the functionality of the seat frame 300, it can be equipped with a TV-position function. In the TV-position, the seat cushion remains at the angle of a normal sitting posture, while the leg rest is raised, allowing the user's body to be in a more relaxed leg position. The seat frame 300 can be adjusted to three positions: sitting, TV-position, and reclining. The seat frame 300 can be adjusted from a sitting position to a TV-position, and then from a TV-position to a reclining position. Correspondingly, the seat frame 300 can also be adjusted from a reclining position to a TV-position, and then from a TV-position back to a sitting position.

[0055] In this seating arrangement, a seat cushion, seat board, or other structure can be installed on the seat frame 300 to provide support when the user sits down. When the foot pedal function is needed, the footrest 200 can be rotated to open away from the seating arrangement. When the foot pedal function is not needed, the footrest 200 can be rotated to retract towards the seating arrangement. During the opening or retraction of the footrest 200, the power transmission is carried out through the first tooth 111 and the second tooth 211, which reduces the number of linkage transmission structures required in the entire foot pedal transmission, thereby reducing the space requirements and lowering the risk of the transmission components touching the ground during operation. This also applies to longer foot pedals, improving the stability of using the foot pedal function.

[0056] When the seat only has the function of foot support, the base assembly can be installed on the seat frame 300 as a fixed structural component. At this time, the foot support 200 can be unfolded or retracted on the seat frame 300 through the transmission assembly.

[0057] When the seat has the function of leg and foot support, the rotation connection point of the third link 123 and the fourth link 124 in the folding part 120 can be connected to the seat frame 300, so that the leg support 110 and the foot support 200 can be unfolded or retracted on the seat frame 300 at the same time.

[0058] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A foot pedal transmission structure, characterized in that: include: The base assembly is provided with a rotatable first tooth (111); The foot bracket (200) is connected to the base assembly by a transmission assembly. The transmission assembly has a second tooth (211) that can mesh with the first tooth (111). When the second tooth (211) meshes with the first tooth (111) and rotates, the transmission assembly can drive the foot bracket (200) away from the base assembly, or drive the foot bracket (200) closer to the base assembly.

2. The foot pedal transmission structure according to claim 1, characterized in that: The transmission assembly includes a transmission block (210) and a first rotating joint (220). The transmission block (210) and the first rotating joint (220) are rotatably disposed on the base assembly. The transmission block (210) and the first rotating joint (220) are connected in a transmission manner. The second tooth (211) is disposed on the transmission block (210). The foot bracket (200) is disposed on the first rotating joint (220). The transmission block (210) can drive the first rotating joint (220) to rotate closer to or away from the base assembly.

3. The foot pedal transmission structure according to claim 2, characterized in that: The first rotating joint (220) includes a first connecting rod (221) and a second connecting rod (222). One end of the first connecting rod (221) is rotatably connected to the base assembly, and the other end of the first connecting rod (221) is rotatably connected to the foot bracket (200). One end of the second connecting rod (222) is eccentrically rotatably connected to the transmission block (210), and the other end of the second connecting rod (222) is rotatably connected to the foot bracket (200).

4. The foot pedal transmission structure according to claim 2, characterized in that: The second tooth (211) includes a plurality of transmission teeth formed on the outside of the transmission block (210), and the plurality of transmission teeth are arranged around the rotation axis of the transmission block (210).

5. The foot pedal transmission structure according to claim 1, characterized in that: The base assembly includes a leg bracket (110), on which the first tooth (111) is disposed.

6. The foot pedal transmission structure according to claim 5, characterized in that: The base assembly also includes a folding portion (120) disposed on the leg bracket (110), the folding portion (120) being located on the side of the leg bracket (110) away from the foot bracket (200), and the folding portion (120) being telescopic.

7. The foot pedal transmission structure according to claim 6, characterized in that: A drive block (112) is rotatably connected to the leg bracket (110). The first tooth (111) includes a plurality of drive teeth formed on the outside of the drive block (112), and the drive teeth are arranged around the rotation axis of the drive block (112).

8. The foot pedal transmission structure according to claim 7, characterized in that: The folding part (120) is connected to the driving block (112) in a transmission manner, and the folding part (120) can drive the driving block (112) to rotate when it folds.

9. A foot pedal transmission structure according to claim 8, characterized in that: The folding part (120) includes a first connecting rod (121), a second connecting rod (122) and a second rotating joint. One end of the first connecting rod (121) is rotatably connected to the leg bracket (110), and one end of the second connecting rod (122) is eccentrically rotatably connected to the drive block (112). The other ends of the first connecting rod (121) and the other ends of the second connecting rod (122) are respectively connected to the second rotating joint for transmission. The second rotating joint can rotate relative to the leg bracket (110) to move closer to or further away from it.

10. A foot pedal transmission structure according to claim 9, characterized in that: The second rotating joint includes a third link (123) and a fourth link (124), which are arranged at intervals. The top ends of the third link (123) and the fourth link (124) respectively form rotating connection points. The bottom end of the third link (123) is rotatably connected to the end of the first link (121) away from the leg bracket (110). The bottom end of the fourth link (124) is rotatably connected to the position of the first link (121) near the third link (123). The bottom end of the fourth link (124) is rotatably connected to the end of the second link (122) away from the drive block (112).

11. A foot pedal transmission structure according to claim 10, characterized in that: The first link (121) includes a connecting section (1211) and an inclined section (1212) connected to each other. The inclined section (1212) is inclined upward along the direction close to the leg bracket (110). The bottom end of the third link (123) is rotatably connected to the end of the connecting section (1211) away from the inclined section (1212). The bottom end of the fourth link (124) is rotatably connected to the connection between the connecting section (1211) and the inclined section (1212). The top end of the inclined section (1212) is rotatably connected to the leg bracket (110).

12. A foot pedal transmission structure according to claim 10, characterized in that: The folding part (120) also includes a linear drive (130), which is connected to the third link (123) or the fourth link (124).

13. A foot pedal transmission structure according to claim 12, characterized in that: The second link (122) is connected to the transmission frame (131), and the movable end of the linear drive (130) is rotatably connected to the transmission frame (131).

14. A seating arrangement, characterized in that: Includes a seat frame (300) and a foot pedal drive structure as described in any one of claims 1 to 13, wherein the base assembly is disposed on the seat frame (300).

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