Pedal adjusting mechanism and seat

Abstract

The utility model discloses a plurality of pedal adjusting mechanisms and a seat, the pedal adjusting mechanism comprises a base and a pedal, the pedal is provided with a connecting part, the connecting part is rotatably connected to the base, and a control adjusting piece capable of moving along the axis direction of the connecting part is arranged between the base and the connecting part; a positioning assembly is arranged between the control adjusting piece and the connecting part, the control adjusting piece is arranged between the base and the connecting part of the pedal, and the pedal which is opened forwards can be stopped at the corresponding horizontal position or inclined position by means of the positioning assembly between the connecting part and the control adjusting piece. The pedal adjusting mechanism is mounted on the seat, so that the supporting postures of the pedal are more diversified, various use requirements of a user are met, and the comfort of the seat pedal is improved.

Description

Technical Field

[0001] This utility model relates to the field of seating, and in particular to a foot pedal adjustment mechanism and a seat. Background Technology

[0002] To meet the diverse needs of people who work long hours, most office chairs or ergonomic chairs are equipped with a footrest mechanism. The footrest mechanism is usually located under the seat and includes a sliding lever that slides back and forth and a pedal located at the front of the lever. When the pedal is needed, the lever is pulled out and the pedal is rotated forward to keep it in a supported position. When the pedal is not needed, the pedal is rotated backward to keep it in a folded state, and then the lever is pulled back to put the pedal back under the seat.

[0003] For example, in the patent for a footrest assembly with publication number CN220236465, the footrest body has a first protrusion, and the base has a groove that cooperates with the first protrusion. The groove has limiting steps at both ends. When the footrest body is unfolded, the first protrusion abuts against one of the limiting steps, and the footrest body will not continue to fold down. When not in use, the footrest body flips backward to the folded position, and the first protrusion abuts against the other limiting step, so that the footrest body remains stable in the folded state. However, such a design is difficult to meet the needs of users.

[0004] When the user is lying down with their legs horizontal, the footrest body in the aforementioned footrest mechanism can be rotated forward and opened to provide support for the legs. However, when the user is sitting, their legs are hanging down at an angle. In order to ensure the user's sitting comfort, the footrest needs to be rotated to a forward and downward tilted support position so that the user can support their naturally hanging or crossed legs. However, in the aforementioned patent, the design of the limiting steps at both ends of the first protrusion and the groove can only open the footrest body forward to a horizontal position, which is not enough to provide leg support for the user in a sitting position.

[0005] Therefore, it is necessary to develop a foot pedal adjustment mechanism that can meet the user's foot pedal usage needs in both sitting and reclining positions while ensuring seating comfort. Summary of the Invention

[0006] This utility model provides various foot pedal adjustment mechanisms and seats. By setting a control adjustment component between the base and the pedal connection, and relying on the positioning component between the connection and the control adjustment component, the forward-opening pedal can be stopped at the corresponding horizontal or tilted position. By installing this foot pedal adjustment mechanism on the seat, the pedal support posture can be more diverse, meeting the various usage needs of users and improving the comfort of the seat foot pedal.

[0007] The technical solution of this utility model is implemented as follows:

[0008] A foot pedal adjustment mechanism includes a base and a pedal. The pedal has a connecting part that is rotatably connected to the base, allowing the pedal to rotate forward from a retracted state and switch to an open state. A control adjustment component that can move along the axial direction of the connecting part is provided between the base and the connecting part. A positioning assembly is provided between the control adjustment component and the connecting part. The positioning assembly includes a limiting tooth provided on one of the control adjustment component and the connecting part, and a plurality of positioning teeth provided on the other of the control adjustment component and the connecting part and arranged sequentially along the circumferential direction of rotation of the connecting part. Each pair of adjacent positioning teeth is staggered or intersected along the axial direction of the connecting part.

[0009] When the control adjustment component moves along the axial direction of the connecting part and aligns the position of the limiting tooth and the corresponding positioning tooth, the connecting part rotates forward and the limiting tooth contacts the corresponding positioning tooth, so that the pedal is kept in place in the predetermined horizontal or inclined position.

[0010] Preferably, there are two positioning teeth, namely a first positioning tooth and a second positioning tooth arranged sequentially along the circumferential direction of rotation of the connecting part, and the first positioning tooth and the second positioning tooth are staggered or intersecting along the axial direction of the connecting part.

[0011] When the control adjustment component moves and the position of the limiting tooth aligns with the position of the first positioning tooth, the pedal rotates forward from the retracted state and the first positioning tooth abuts against the limiting tooth. At this time, the pedal is in a horizontal support state. When the control adjustment component moves again and the position of the limiting tooth switches to align with the position of the second positioning tooth, the pedal continues to rotate forward until the second positioning tooth abuts against the limiting tooth. At this time, the pedal switches from a horizontal support state to a tilted support state that is tilted forward and downward.

[0012] Preferably, the limiting teeth are provided on the control and adjustment components, and multiple positioning teeth are provided on the connecting parts.

[0013] Preferably, the connecting part or control adjustment part is also provided with a protruding tooth adjacent to multiple positioning teeth; when the pedal is rotated from the open state to the retracted state, the protruding tooth abuts against the limiting tooth.

[0014] Preferably, the length of the protruding tooth is greater than the length of the limiting tooth along the axial direction of the connecting part; so that when the control adjustment member slides axially to any corresponding position, it does not affect the fact that the protruding tooth and the limiting tooth abut against each other after the connecting part rotates backward and retracts.

[0015] Preferably, a locking structure is provided between the base and the control adjustment component. The locking structure can lock or unlock the control adjustment component when the limiting tooth corresponds to the first positioning tooth or the second positioning tooth, thus preventing the control adjustment component from moving out of the predetermined position after it has been moved into place.

[0016] Preferably, the locking structure includes a limiting member disposed on one of the base and the control adjustment member, and two left-right spaced limiting grooves disposed on the other of the base and the control adjustment member. The limiting member has a hemispherical limiting surface, and the shape of the limiting groove matches the hemispherical limiting surface. The limiting member can elastically extend and retract toward the limiting groove. The control adjustment member has a locked state and an unlocked state. When the control adjustment member moves to a predetermined position and the limiting tooth corresponds to the position of the first positioning tooth or the second positioning tooth, the limiting member elastically extends and the hemispherical limiting surface is engaged in one of the limiting grooves. At this time, the control adjustment member is in the locked state. When an external force is applied to the control adjustment member and forces the limiting member to elastically retract, the hemispherical limiting surface disengages from the corresponding limiting groove. At this time, the control adjustment member switches to the unlocked state.

[0017] Preferably, the two limiting grooves are connected by a strip-shaped guide groove that matches the hemispherical limiting surface; the strip-shaped guide groove plays a guiding and transitioning role, making the movement of the control adjustment component smoother.

[0018] Preferably, the base is provided with a strip groove extending along the axial direction of the connecting part, and the control adjustment component is provided with a toggle part extending out of the strip groove; the toggle part is easy to operate by hand, and the strip groove can avoid the movable toggle part.

[0019] Preferably, the control adjustment component has an arc-shaped surface facing the connecting part, and the limiting teeth are disposed on the arc-shaped surface; the arc-shaped surface design can make the control adjustment component and the connecting part more compatible.

[0020] Preferably, the pedal includes two symmetrical support plates, which are connected by the connecting part.

[0021] A foot pedal adjustment mechanism includes a base and a pedal. The pedal has a connecting part that is rotatably connected to the base, allowing the pedal to rotate forward from a retracted state and switch to an open state. A control adjustment component is provided between the base and the connecting part. The control adjustment component is movable along the axial direction of the connecting part. A positioning assembly is provided between the control adjustment component and the connecting part. The positioning assembly includes a limiting tooth provided on one of the control adjustment component and the connecting part, and a mating tooth provided on the other of the control adjustment component and the connecting part. The mating tooth includes a plurality of positioning parts arranged sequentially along the circumferential direction of rotation of the connecting part. Each pair of adjacent positioning parts is integrally formed and intersects with each other along the axial direction of the connecting part.

[0022] When the control adjustment component moves along the axial direction of the connecting part and aligns the position of the limiting tooth and the corresponding positioning part, the connecting part rotates forward and the limiting tooth contacts the corresponding positioning part, so that the pedal is kept in place in a predetermined horizontal or inclined position.

[0023] A foot pedal adjustment mechanism includes a base and a pedal. The pedal has a connecting part that is rotatably connected to the base, allowing the pedal to rotate forward from a retracted state and switch to an open state. A control adjustment component is provided between the base and the connecting part. The control adjustment component is movable along the axial direction of the connecting part. A positioning assembly is provided between the control adjustment component and the connecting part. The positioning assembly includes a limiting tooth on one of the control adjustment component and the connecting part, and a mating groove on the other of the control adjustment component and the connecting part. The limiting tooth is inserted into the mating groove. The mating groove includes multiple slots extending along the axial direction of the connecting part. Every two adjacent slots are interconnected. The multiple slots are arranged along the circumferential direction of rotation of the connecting part, and the extension length of the multiple slots decreases progressively, thereby forming multiple positioning walls arranged sequentially along the axial direction of the connecting part within the mating groove.

[0024] When the control adjustment component moves along the axial direction of the connecting part and aligns the position of the limiting tooth with the corresponding positioning wall surface, the connecting part rotates forward and the limiting tooth contacts the corresponding positioning wall surface, so that the pedal is kept in the predetermined horizontal or inclined position.

[0025] A seat, including the aforementioned foot pedal adjustment mechanism.

[0026] The beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0027] This utility model provides an axially movable control adjustment component between the connecting part and the base. Through the cooperation of the limiting teeth between the control adjustment component and the connecting part and multiple positioning teeth distributed circumferentially and staggered or offset along the axial direction, the limiting teeth can switch positions under the drive of the control adjustment component and abut against the corresponding positioning teeth, so that the pedal rotated to the position is kept in a predetermined horizontal or inclined position, thereby supporting the user's legs when they need to be flat or crossed. While ensuring comfort, it meets the user's usage needs and improves the user experience.

[0028] The connecting part is provided with protruding teeth adjacent to multiple positioning teeth, and the length of the protruding teeth is greater than the length of the limiting teeth. This design ensures that when the limiting teeth slide to the position corresponding to any positioning tooth, they will not be misaligned with the protruding teeth. The user can directly rotate the pedal backward and switch to the retracted state. The design is simple and practical, ensuring that the pedal can stop at the initial position when it is retracted backward.

[0029] A locking structure is also provided between the base and the control adjustment component. The locking structure includes a limiting groove and an elastic telescopic limiting component with a hemispherical limiting surface. When the control adjustment component slides into place, the hemispherical limiting surface can cooperate with the limiting groove to prevent the control adjustment component from accidentally disengaging from the predetermined position, which would make it difficult for the pedal to support the legs. When it is necessary to change the position of the control adjustment component, it is only necessary to apply force to the actuating part to overcome the limiting force and separate the limiting component from the limiting groove. While ensuring the stability of the control adjustment component, it retains a strong sense of operation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the foot pedal adjustment mechanism;

[0031] Figure 2 An exploded view of the foot pedal adjustment mechanism;

[0032] Figure 3 This is a side view of the foot pedal adjustment mechanism in a horizontal support state.

[0033] Figure 4 This is a side view of the foot pedal adjustment mechanism in an inclined support state;

[0034] Figure 5 This is a cross-sectional view of the limiting tooth abutting against the first positioning tooth in a horizontally supported state.

[0035] Figure 6 A cross-sectional view of the limiting tooth abutting against the second positioning tooth in an inclined support state;

[0036] Figure 7 A cross-sectional view of the limiting tooth abutting the protruding tooth in the retracted state;

[0037] Figure 8 This is a schematic diagram of the control adjustment component;

[0038] Figure 9 This is a schematic diagram of the limiting component installed on the base;

[0039] Figure 10 A schematic diagram of the structure of each positioning tooth on the connecting part;

[0040] Figure 11 A schematic diagram illustrating how the adjusting component moves the limiting tooth from the first positioning tooth to the second positioning tooth;

[0041] Figure 12 This is a schematic diagram showing the stop tooth abutting against the second positioning tooth after the pedal continues to rotate forward.

[0042] Figure 13 This is a schematic diagram showing the interlocking of two positioning teeth;

[0043] Figure 14This is a schematic diagram of the limiting tooth switching between the first positioning part and the second positioning part in Embodiment 2;

[0044] Figure 15 This is a structural diagram of the groove fitting on the connecting part in Embodiment 3;

[0045] Figure 16 This is a schematic diagram of the limiting teeth switching between multiple positioning walls in Example 3;

[0046] The reference numerals in the attached drawings are as follows: 1-support plate, 2-base, 3-control adjustment component, 4-limiting component, 5-pull rod, 6-mounting seat, 11-connecting part, 12-first positioning tooth, 12a-first positioning part, 13-second positioning tooth, 13a-second positioning part, 14-protruding tooth, 15-groove, 15a-fitting groove, 21-upper shell, 22-lower shell, 31-moving part, 32-limiting tooth, 33-limiting groove, 34-strip guide groove, 151-positioning wall surface, 211-mounting hole, 221-strip groove. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] Many specific details are set forth in the following description in order to provide 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 scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0049] This utility model has multiple embodiments, and the specific implementation methods are as follows:

[0050] Example 1: As Figure 1-13As shown, this embodiment provides a foot pedal adjustment mechanism, including a base 2 and a pedal. The pedal is provided with a connecting part 11, which is rotatably connected to the base 2, allowing the pedal to rotate forward from a retracted state and switch to an open state. For ease of installation, the base 2 is a split structure, including an upper half-shell 21 and a lower half-shell 22 that are fitted together and detachably connected. The connecting part 11 is a cylindrical structure, and both the upper half-shell 21 and the lower half-shell 22 are provided with two semi-circular grooves. After the upper half-shell 21 and the lower half-shell 22 are fitted together, a foot pedal adjustment mechanism is formed. The base 2 is provided with a rotating shaft hole that is rotatably connected to the connecting part 11; a control adjustment member 3 that can move along the axial direction of the connecting part 11 is provided between the base 2 and the connecting part 11; a positioning assembly is provided between the control adjustment member 3 and the connecting part 11, the positioning assembly including a limiting tooth 32 provided on one of the control adjustment member 3 and the connecting part 11, and a plurality of positioning teeth provided on the other of the control adjustment member 3 and the connecting part 11 and arranged sequentially along the circumferential direction of the rotation of the connecting part 11, wherein each pair of adjacent positioning teeth are staggered or intersected along the axial direction of the connecting part 11;

[0051] When the control adjustment member 3 moves along the axial direction of the connecting part 11 and the position of the limiting tooth 32 and the corresponding positioning tooth are aligned, the connecting part 11 rotates forward and the limiting tooth 32 contacts the corresponding positioning tooth, so that the pedal is kept in the predetermined horizontal or inclined position.

[0052] Furthermore, in this embodiment, the limiting tooth 32 can be disposed on the connecting part 11 or on the control adjustment member 3. This embodiment explains the situation by showing the limiting tooth 32 disposed on the control adjustment member 3 and multiple positioning teeth disposed on the connecting part 11. To match the outer wall surface of the connecting part 11, the control adjustment member 3 has an arc-shaped surface facing the connecting part 11, and the limiting tooth 32 is disposed on this arc-shaped surface. Figure 3-6 As shown, there are two positioning teeth, namely a first positioning tooth 12 and a second positioning tooth 13 arranged sequentially along the circumferential direction of the connecting part 11. When the connecting part 11 rotates forward to open, the rotation direction is clockwise, and when it rotates backward to retract, the rotation direction is counterclockwise. The first positioning tooth 12 and the second positioning tooth 13 are staggered or intersecting along the axial direction of the connecting part 11; the first positioning tooth 12 is closer to the clockwise side.

[0053] When the control adjustment component 3 moves and the position of the limiting tooth 32 corresponds to the position of the first positioning tooth 12, the pedal rotates forward from the retracted state and the first positioning tooth 12 abuts against the limiting tooth 32. At this time, the pedal is in a horizontal support state, so as to provide support for the horizontal legs when the user leans back. When the control adjustment component 3 moves again and the position of the limiting tooth 32 switches to correspond to the position of the second positioning tooth 13, a rotation space is formed between the second positioning tooth 13 and the limiting tooth 32. The pedal continues to rotate forward until the second positioning tooth 13 abuts against the limiting tooth 32. At this time, the pedal switches from a horizontal support state to a tilted support state that is tilted forward and downward, so as to provide support for the crossed legs when the user leans back.

[0054] Furthermore, such as Figure 2 As shown, the outer wall of the base 2 is also provided with corresponding markings. The markings are used to display the direction of movement and position information of the control adjustment component 3. For example, the markings in this embodiment include two arrows in opposite directions and the numbers "1" and "2" near the two arrows. "1" represents that the control adjustment component 3 is moved to the position corresponding to the second positioning tooth 13, and "2" represents that the control adjustment component 3 is moved to the position corresponding to the first positioning tooth 12, so as to facilitate user operation and identification.

[0055] Furthermore, such as Figure 7 As shown, when the limiting tooth 32 abuts against any of the positioning teeth, and the user needs to rotate the pedal backward and retract it, in order to ensure that the pedal in the retracted state can be kept in the corresponding retracted position, the connecting part 11 or the control adjustment member 3 is also provided with a protruding tooth 14 adjacent to multiple positioning teeth; when the pedal is rotated backward from the open state to the retracted state, the protruding tooth 14 abuts against the limiting tooth 32, so that the pedal is kept in the corresponding retracted position.

[0056] Furthermore, to ensure that the limiting teeth 32 can engage with the protruding teeth 14 after the pedal is rotated backward and retracted, in this embodiment, the length of the protruding teeth 14 is greater than the length of the limiting teeth 32 along the axial direction of the connecting part 11. This ensures that the protruding teeth 14 can always correspond to the position of the limiting teeth 32. When the control adjustment member 3 slides axially to any corresponding position, it does not affect the engagement of the protruding teeth 14 with the limiting teeth 32 after the connecting part 11 is rotated backward and retracted, thus ensuring that the pedal is in a stable state after retraction.

[0057] Furthermore, such as Figure 8-9As shown, to facilitate the control of the position of the control adjustment component 3, a locking structure is provided between the base 2 and the control adjustment component 3. The locking structure can lock or unlock the control adjustment component 3 when the limiting tooth 32 corresponds to the first positioning tooth 12 or the second positioning tooth 13, thus preventing the control adjustment component 3 from moving out of the predetermined position after it has been moved into place. Specifically, the locking structure includes a limiting component 4 provided on one of the base 2 and the control adjustment component 3, and two left-right spaced limiting grooves 33 provided on the other of the base 2 and the control adjustment component 3. In this embodiment, the limiting component 4 is provided on the base 2, and the limiting grooves 33 are provided on the control adjustment component 3. The limiting component 4 has a hemispherical limiting surface, and the shape of the limiting groove 33 matches the hemispherical limiting surface. The limiting component 4 can elastically expand and contract toward the limiting groove 33. The limiting component 4 can be a spring that expands and contracts through its own elastic deformation. The limiting component can also be a movable component that relies on a spring for elastic extension and contraction. For example, in this embodiment, the limiting component 4 is a ball that is locked in a mounting base. The hemispherical surface of the ball protrudes outside the mounting base. The base 2 is provided with a mounting hole 211, and the mounting base is fixed in the mounting hole 211. The mounting base is provided with a compression spring that acts on the ball. The control adjustment component 3 has a locked state and an unlocked state. When the control adjustment component 3 moves to a predetermined position and the limiting tooth 32 corresponds to the position of the first positioning tooth 12 or the second positioning tooth 13, the limiting component 4 extends elastically and the hemispherical limiting surface is locked into one of the limiting grooves 33. At this time, the control adjustment component 3 is in the locked state. When an external force acts on the control adjustment component 3 and forces the limiting component 4 to retract elastically, the hemispherical limiting surface is dislodged from the corresponding limiting groove 33. At this time, the control adjustment component 3 switches to the unlocked state so that the limiting tooth 32 corresponds to the position of the next positioning tooth.

[0058] Furthermore, to ensure that the limiting member 4 does not get stuck with the control adjustment member 3 after it is dislodged from the limiting groove 33, the two limiting grooves 33 are connected by a strip-shaped guide groove 34 that matches the hemispherical limiting surface. The strip-shaped guide groove 34 plays a guiding and transitioning role, so that when the control adjustment member 3 moves, the limiting member 4 and the strip-shaped guide groove 34 form a sliding connection, making the sliding process of the limiting member 4 after it is dislodged from the limiting groove 33 smoother.

[0059] Furthermore, to facilitate user operation of the control adjustment component 3, a strip groove 221 extending along the axis of the connecting part 11 is provided through the base 2, and a toggle part 31 protruding from the strip groove 221 is provided on the control adjustment component 3; the toggle part 31 is an inverted triangular block, which is convenient for hand operation, the strip groove 221 can avoid the toggle part 31, and the width of the strip groove 221 can be set to match the toggle part 31, so that the toggle part 31 and the strip groove 221 form a sliding connection, improving the smoothness of operation.

[0060] Furthermore, in order to support the user's legs and prevent the pedal from interfering with the base 2 when rotating back and forth, the pedal in this embodiment includes two symmetrical support plates 1, which are connected by the connecting part 11.

[0061] Furthermore, a seat is provided, including the aforementioned foot pedal adjustment mechanism; specifically, a pull rod 5 is connected to the rear end of the base 2, and a mounting seat 6 is provided at the rear end of the pull rod 5. The pull rod 5 is slidably connected to the mounting seat 6 in the front-back direction. The mounting seat 6 can be fixedly connected to the lower end of the seat. When the pedal is needed, the pull rod 5 is pulled out and the pedal is rotated forward. Then, the control adjustment component 3 keeps the rotated pedal in the corresponding support position.

[0062] Example 2: This example differs from the examples above in that, as follows... Figure 14 As shown, the positioning component structure in this embodiment differs from that in the previous embodiment. The positioning component between the control adjustment member 3 and the connecting part 11 includes a limiting tooth 32 disposed on one of the control adjustment member 3 and the connecting part 11, and a mating tooth disposed on the other of the control adjustment member 3 and the connecting part 11. The mating tooth includes a plurality of positioning parts arranged sequentially along the circumferential direction of rotation of the connecting part 11. In this embodiment, the mating tooth is disposed on the connecting part 11 and the limiting tooth 32 is disposed on the control adjustment member 3 for explanation. Each pair of adjacent positioning parts is integrally formed and intersects each other along the axial direction of the connecting part 11.

[0063] When the control adjustment member 3 moves along the axis of the connecting part 11 and aligns the position of the limiting tooth 32 with the corresponding positioning part, the connecting part 11 rotates forward and the limiting tooth 32 contacts the corresponding positioning part, so that the pedal is kept in place at a predetermined horizontal or inclined position. In this embodiment, two interlocking and integrally formed positioning parts, when the limiting tooth 32 aligns with the position of one of the corresponding positioning parts, the pedal rotates forward from the retracted state and the first positioning tooth 12 abuts against the corresponding positioning part. At this time, the pedal is in a horizontal support state, so as to provide support for the horizontal legs when the user leans back. When the control adjustment member 3 moves again and the position of the limiting tooth 32 is switched to align with the position of the other corresponding positioning part, a rotation space is formed between the other positioning part and the limiting tooth 32. The pedal continues to rotate forward until the other positioning part abuts against the limiting tooth 32. At this time, the pedal switches from a horizontal support state to an inclined support state that is tilted forward and downward, so as to provide support for the crossed legs when the user leans back. Thus, the same support effect as in the above embodiment is achieved.

[0064] Example 3: This example differs from the examples above in that, as follows: Figure 15-16As shown, the positioning component structure in this embodiment differs from that in the above embodiment. The positioning component between the control adjustment member 3 and the connecting part 11 includes a limiting tooth 32 disposed on one of the control adjustment member 3 and the connecting part 11, and a mating groove 15a disposed on the other of the control adjustment member 3 and the connecting part 11. In this embodiment, the mating groove 15a is disposed on the connecting part 11 and the limiting tooth 32 is disposed on the control adjustment member 3 for explanation. The limiting tooth 32 is inserted into the mating groove 15a to save space occupied by the positioning component. The mating groove 15a includes a plurality of slots 15 extending along the axial direction of the connecting part 11. Each two adjacent slots 15 are interconnected. The plurality of slots 15 are arranged along the circumferential direction of the rotation of the connecting part 11 and the extension length of the plurality of slots 15 decreases step by step, thereby forming a plurality of positioning wall surfaces 151 arranged sequentially along the axial direction of the connecting part 11 in the mating groove 15a.

[0065] When the control adjustment component 3 moves along the axial direction of the connecting part 11 and aligns the position of the limiting tooth 32 with the corresponding positioning wall surface 151, the connecting part 11 rotates forward and the limiting tooth 32 contacts the corresponding positioning wall surface 151, so that the pedal is held in place at a predetermined horizontal or inclined position; for example, in this embodiment, the mating groove 15a has three positioning wall surfaces 151 arranged sequentially along the axial direction of the connecting part 11. When the limiting tooth 32 aligns with one of the corresponding positioning wall surfaces 151, the pedal can rotate forward and the first positioning tooth 12 abuts against the corresponding positioning wall surface 151. At this time, the pedal is in a horizontal support state, so as to provide support for the horizontal legs when the user leans back; When the control adjustment component 3 moves again and switches the position of the limiting tooth 32 to correspond to the position of the other positioning wall 151, a rotational space is formed between the other positioning wall 151 and the limiting tooth 32. The pedal continues to rotate forward until the other positioning wall 151 abuts against the limiting tooth 32. At this time, the pedal switches from a horizontal support state to a tilted support state that is tilted forward and downward, so as to provide support for the user's crossed legs when leaning back. If it is necessary to adjust the tilted support angle, the control adjustment component 3 can be moved again so that the last positioning wall 151 abuts against the limiting tooth 32, so that the pedal is held in the corresponding position at a larger tilt angle, achieving the same support effect as in the above embodiment.

[0066] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A foot pedal adjustment mechanism, characterized in that, Includes a base (2) and a pedal. The pedal is provided with a connecting part (11). The connecting part (11) is rotatably connected to the base (2), so that the pedal can rotate forward from the retracted state and switch to the open state. A control adjustment member (3) that can move along the axial direction of the connecting part (11) is provided between the base (2) and the connecting part (11). A positioning component is provided between the control adjustment member (3) and the connecting part (11). The positioning component includes a limiting tooth (32) provided on one of the control adjustment member (3) and the connecting part (11), and a plurality of positioning teeth provided on the other of the control adjustment member (3) and the connecting part (11) and arranged sequentially along the circumferential direction of the connecting part (11). Each pair of adjacent positioning teeth are staggered or intersected along the axial direction of the connecting part (11). When the control adjustment member (3) moves along the axial direction of the connecting part (11) and the position of the limiting tooth (32) and the corresponding positioning tooth are aligned, the connecting part (11) rotates forward and the limiting tooth (32) contacts the corresponding positioning tooth, so that the pedal is kept in the predetermined horizontal or inclined position.

2. The foot pedal adjustment mechanism according to claim 1, characterized in that: There are two positioning teeth, namely a first positioning tooth (12) and a second positioning tooth (13) arranged sequentially along the circumferential direction of the connecting part (11). The first positioning tooth (12) and the second positioning tooth (13) are staggered or intersected along the axial direction of the connecting part (11). When the control adjustment component (3) moves and the position of the limiting tooth (32) corresponds to the position of the first positioning tooth (12), the pedal rotates forward from the retracted state and the first positioning tooth (12) abuts against the limiting tooth (32). At this time, the pedal is in a horizontal support state. When the control adjustment component (3) moves again and the position of the limiting tooth (32) is switched to correspond to the position of the second positioning tooth (13), the pedal continues to rotate forward until the second positioning tooth (13) abuts against the limiting tooth (32). At this time, the pedal switches from a horizontal support state to a tilted support state that is tilted forward and downward.

3. A foot pedal adjustment mechanism according to claim 1 or 2, characterized in that: Limiting teeth (32) are provided on the control adjustment member (3), and multiple positioning teeth are provided on the connecting part (11).

4. The foot pedal adjustment mechanism according to claim 3, characterized in that: The connecting part (11) or the control adjustment part (3) is also provided with a protruding tooth (14) adjacent to multiple positioning teeth; when the pedal is rotated from the open state to the retracted state, the protruding tooth (14) abuts against the limiting tooth (32).

5. A foot pedal adjustment mechanism according to claim 4, characterized in that: Along the axial direction of the connecting part (11), the length of the protruding tooth (14) is greater than the length of the limiting tooth (32).

6. The foot pedal adjustment mechanism according to claim 1, characterized in that: A locking structure is provided between the base (2) and the control adjustment member (3). The locking structure can lock or unlock the control adjustment member (3) when the limiting tooth (32) corresponds to the first positioning tooth (12) or the second positioning tooth (13).

7. A foot pedal adjustment mechanism according to claim 6, characterized in that: The locking structure includes a limiting member (4) on one of the base (2) and the control adjustment member (3), and two left-right spaced limiting grooves (33) on the other of the base (2) and the control adjustment member (3). The limiting member (4) has a hemispherical limiting surface, and the shape of the limiting groove (33) matches the hemispherical limiting surface. The limiting member (4) can elastically extend and retract toward the limiting groove (33). The control adjustment member (3) has a locked state and an unlocked state. When the control adjustment member (3) moves to a predetermined position and the limiting tooth (32) corresponds to the position of the first positioning tooth (12) or the second positioning tooth (13), the limiting member (4) elastically extends and the hemispherical limiting surface is engaged in one of the limiting grooves (33). At this time, the control adjustment member (3) is in the locked state. When an external force acts on the control adjustment member (3) and forces the limiting member (4) to elastically retract, the hemispherical limiting surface is dislodged from the corresponding limiting groove (33). At this time, the control adjustment member (3) switches to the unlocked state.

8. The foot pedal adjustment mechanism according to claim 7, characterized in that: The two limiting grooves (33) are connected by a strip guide groove (34) that matches the hemispherical limiting surface.

9. A foot pedal adjustment mechanism according to claim 1, characterized in that: The base (2) has a through groove (221) extending along the axis of the connecting part (11), and the control adjustment part (3) has a toggle part (31) extending out of the groove (221).

10. A foot pedal adjustment mechanism according to claim 3, characterized in that: The control adjustment member (3) has an arc-shaped surface facing the connecting part (11), and the limiting tooth (32) is provided on the arc-shaped surface.

11. A foot pedal adjustment mechanism according to claim 1, characterized in that: The pedal includes two symmetrical support plates (1), which are connected by the connecting part (11).

12. A foot pedal adjustment mechanism, characterized in that: Includes a base (2) and a pedal. The pedal is provided with a connecting part (11). The connecting part (11) is rotatably connected to the base (2), so that the pedal can rotate forward from the retracted state and switch to the open state. A control adjustment component (3) is provided between the base (2) and the connecting part (11). The control adjustment component (3) can move along the axial direction of the connecting part (11). A positioning component is provided between the control adjustment component (3) and the connecting part (11). The positioning component includes a limiting tooth (32) provided on one of the control adjustment component (3) and the connecting part (11) and a mating tooth provided on the other of the control adjustment component (3) and the connecting part (11). The mating tooth includes multiple positioning parts arranged sequentially along the circumferential direction of the connecting part (11). Each pair of adjacent positioning parts is integrally formed and intersects each other along the axial direction of the connecting part (11). When the control adjustment member (3) moves along the axial direction of the connecting part (11) and the position of the limiting tooth (32) and the corresponding positioning part correspond, the connecting part (11) rotates forward and the limiting tooth (32) contacts the corresponding positioning part, so that the pedal is kept in the predetermined horizontal or inclined position.

13. A foot pedal adjustment mechanism, characterized in that, Includes a base (2) and a pedal. The pedal is provided with a connecting part (11), which is rotatably connected to the base (2), allowing the pedal to rotate forward from the retracted state and switch to the open state. A control adjustment component (3) is provided between the base (2) and the connecting part (11). The control adjustment component (3) can move along the axis of the connecting part (11). A positioning component is provided between the control adjustment component (3) and the connecting part (11). The positioning component includes a limiting tooth (32) provided on one of the control adjustment component (3) and the connecting part (11), and a positioning tooth (32) provided on the control adjustment component. (3) A fitting groove (15a) on the other side of the connecting part (11) is provided, and a limiting tooth (32) is inserted into the fitting groove (15a); the fitting groove (15a) includes a plurality of slots (15) extending along the axial direction of the connecting part (11), and each two adjacent slots (15) are interconnected. The plurality of slots (15) are arranged along the circumferential direction of the rotation of the connecting part (11) and the extension length of the plurality of slots (15) decreases step by step, thereby forming a plurality of positioning walls (151) arranged along the axial direction of the connecting part (11) in the fitting groove (15a). When the control adjustment member (3) moves along the axial direction of the connecting part (11) and the position of the limiting tooth (32) and the corresponding positioning wall (151) correspond, the connecting part (11) rotates forward and the limiting tooth (32) contacts the corresponding positioning wall (151), so that the pedal is kept in the predetermined horizontal or inclined position.

14. A type of seat, characterized in that, Includes the foot pedal adjustment mechanism as described in any one of claims 1-13.

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