Adjustable footrest and seat

Abstract

The utility model relates to the technical field of living furniture, and specifically discloses an adjustable footrest and seat, wherein the adjustable footrest comprises a footrest bracket, two rotation limit assemblies, and a footrest body rotatably mounted on the footrest bracket by the two rotation limit assemblies; wherein, when the footrest body rotates forward to the highest limit position relative to the footrest bracket, one of the rotation limit assemblies limits the footrest body from continuing to rotate forward; when the footrest body rotates reversely to the lowest limit position relative to the footrest bracket, the other rotation limit assembly limits the footrest body from continuing to rotate reversely. The adjustable footrest and seat provided by the utility model can effectively solve the problem that the footrest height of the existing footrest cannot be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of living furniture, in particular to an adjustable footrest and a seat. Background Art

[0002] Many seats have footrests at the bottom for placing feet. People of different heights and leg lengths need different footrest heights. However, the existing footrests are fixed and the footrest height cannot be adjusted, which results in a poor user experience.

[0003] Therefore, it is necessary to improve the existing footrest to solve the problem that the footrest height cannot be adjusted.

[0004] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Utility Model Content

[0005] One purpose of the utility model is to provide an adjustable footrest and a seat, which can effectively solve the problem that the footrest height of the existing footrest cannot be adjusted.

[0006] To achieve the above objectives, on the one hand, the utility model provides an adjustable footrest, comprising a footrest bracket, two rotation limiter assemblies, and a footrest body rotatably mounted on the footrest bracket through the two rotation limiter assemblies;

[0007] Wherein, when the pedal body rotates forwardly relative to the pedal bracket to the highest limit position, one of the rotation limit assemblies limits the pedal body from continuing to rotate forwardly;

[0008] When the pedal body rotates in the opposite direction relative to the pedal bracket to the lowest limit position, another rotation limiting assembly limits the pedal body from continuing to rotate in the opposite direction.

[0009] Optionally, the footrest bracket includes two connecting rods;

[0010] Wherein, each of the connecting rods is rotationally connected to the pedal body through a rotation limiting assembly.

[0011] Optionally, the rotation limiting component includes:

[0012] A fixed shaft, the fixed shaft being synchronously rotatably connected with the connecting rod;

[0013] A rotating gear ring, the rotating gear ring is synchronously connected to the pedal body, and the rotating gear ring is sleeved on the outside of the fixed shaft and is connected to the fixed shaft;

[0014] A ratchet tooth plate, wherein the ratchet tooth plate is rotatably connected to the fixed shaft via a ratchet shaft, and a ratchet portion meshing with the rotating gear ring is provided on the outer side of the first end of the ratchet tooth plate;

[0015] A compression spring connected to the ratchet tooth plate;

[0016] The ratchet tooth plate has a locked state in which it is driven by the compression spring to rotate relative to the rotating toothed ring until the ratchet portion is engaged with the rotating toothed ring, and an unlocked state in which it is driven by the compression spring to rotate relative to the rotating toothed ring until the ratchet portion is separated from the rotating toothed ring.

[0017] Optional,

[0018] The fixed shaft includes a thrust surface for abutting against the second end of the ratchet tooth plate, and when the second end of the ratchet tooth plate abuts against the thrust surface, the ratchet portion meshes with the rotating gear ring.

[0019] Optionally, the fixed shaft is provided with a U-shaped groove beside the thrust surface, and the U-shaped groove is located below the ratchet tooth plate.

[0020] Optionally, a spring positioning groove for inserting the lower end of the compression spring is provided at the bottom of the U-shaped groove.

[0021] Optionally, the two rotation limit assemblies are symmetrically arranged about a midpoint between the two rotation limit assemblies.

[0022] On the other hand, a seat is provided, comprising a seat body and any one of the adjustable footrests described above.

[0023] The beneficial effect of the utility model is that it provides an adjustable footrest and seat, wherein the footrest body is rotatably mounted on the footrest bracket, so that as long as the footrest body is rotated to different positions, different height supports can be provided for the feet; therefore, the adjustable footrest and seat provided by the utility model can effectively solve the problem that the height of the footrest cannot be adjusted in the existing footrest;

[0024] Furthermore, in order to prevent the pedal body from rotating 360° without restriction, the adjustable pedal is provided with two rotation limit assemblies with different rotation direction restrictions to ensure that the pedal body rotates within a specified height range. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 A schematic diagram of the structure of an adjustable footrest provided in an embodiment in a low limit position;

[0027] Figure 2 An exploded schematic diagram of an adjustable footrest provided in an embodiment in a low limit position;

[0028] Figure 3 An exploded schematic diagram of a first rotation limit assembly provided in an embodiment being in a low limit position;

[0029] Figure 4 An exploded schematic diagram of the second rotation limiting assembly provided in the embodiment being in a low limit position;

[0030] Figure 5 A schematic diagram of the structure of the first rotation limit assembly provided in the embodiment at the low limit position;

[0031] Figure 6 A schematic diagram of the structure of the second rotation limit assembly provided in the embodiment at the low limit position;

[0032] Figure 7 A schematic diagram of the structure of an adjustable footrest provided in an embodiment in a high limit position;

[0033] Figure 8 A schematic diagram of the structure of the first rotation limit assembly provided in the embodiment at the high limit position;

[0034] Fig. 9 A schematic structural diagram of the second rotation limiting assembly provided in the embodiment at the high limit position.

[0035] In the figure:

[0036] 1. Footrest bracket; 101. Connecting rod;

[0037] 2a, first rotation limiting assembly; 2b, second rotation limiting assembly;

[0038] 201, fixed shaft; 2011, thrust surface; 2012, U-shaped groove; 2013, spring positioning groove;

[0039] 202, rotating gear ring;

[0040] 203, ratchet tooth plate; 2031, first end; 2032, second end; 2033, ratchet tooth portion;

[0041] 204, compression spring;

[0042] 205, ratchet shaft;

[0043] 3. Pedal body. DETAILED DESCRIPTION

[0044] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] In the description of the present utility model, it is to be understood that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centrally arranged component at the same time.

[0046] In addition, terms such as "long", "short", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention. They do not indicate or imply that the device or component referred to must have this specific direction or operate with a specific direction structure, and should not be understood as a limitation of the present invention.

[0047] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0048] The utility model provides an adjustable footrest and seat, which are suitable for application scenarios in which a seating function is provided for a human body and support is provided for the feet. The utility model can effectively solve the problem that the height of the feet cannot be adjusted in the existing footrest.

[0049] The seat provided in this embodiment includes a seat body and an adjustable footrest installed at the lower part of the seat body.

[0050] See also Figure 1 and Figure 2 The adjustable footrest includes a footrest bracket 1, two rotation limiting components, and a footrest body 3 rotatably mounted on the footrest bracket 1 through the two rotation limiting components.

[0051] In this embodiment, the pedal body 3 is rotatably mounted on the pedal bracket 1. Therefore, by rotating the pedal body 3 to different positions, different heights of support can be provided for the foot. For example, when the user's legs are long, the pedal body 3 can be rotated to a lower position; when the user's legs are short, the pedal body 3 can be rotated to a higher position. Therefore, the adjustable footrest and seat provided by the utility model can effectively solve the problem that the footrest height of the existing footrest cannot be adjusted.

[0052] Furthermore, in order to prevent the pedal body 3 from rotating 360° without restriction, the adjustable pedal is equipped with two rotation limit assemblies with different rotation direction restrictions. Specifically, when the pedal body 3 rotates in the opposite direction relative to the pedal bracket 1 to the lowest limit position, the other rotation limit assembly (hereinafter referred to as the "first rotation limit assembly 2a") limits the pedal body 3 from continuing to rotate in the opposite direction (rotating inward);

[0053] When the pedal body 3 rotates forward (outward) relative to the pedal bracket 1 to the highest limit position, one of the rotation limiting components (hereinafter referred to as the "second rotation limiting component 2b") limits the pedal body 3 from continuing to rotate forward.

[0054] In this embodiment, the pedal bracket 1 includes two connecting rods 101 ; wherein each of the connecting rods 101 is rotationally connected to the pedal body 3 via one of the rotation limiting components.

[0055] The specific structure of the rotation limit assembly is introduced below.

[0056] See also Figure 3 and Figure 4 The rotation limiting assembly includes a fixed shaft 201, a rotating gear ring 202, a ratchet tooth plate 203, and a compression spring 204. The fixed shaft 201 is synchronously rotatably connected with the connecting rod 101. The rotating gear ring 202 is synchronously rotatably connected with the pedal body 3, and the rotating gear ring 202 is sleeved on the outside of the fixed shaft 201 and is rotatably connected with the fixed shaft 201.

[0057] The ratchet tooth plate 203 is rotatably connected to the fixed shaft 201 via a ratchet shaft 205 , and a ratchet portion 2033 meshing with the rotating gear ring 202 is disposed on the outer side of a first end 2031 of the ratchet tooth plate 203 .

[0058] The compression spring 204 is connected to the ratchet tooth plate 203 and pushes the ratchet tooth plate 203 upwards, so that:

[0059] The ratchet tooth plate 203 is driven by the compression spring 204 to rotate relative to the rotating toothed ring 202 until the ratchet portion 2033 is engaged with the rotating toothed ring 202 in a locked state, and is driven by the compression spring 204 to rotate relative to the rotating toothed ring 202 until the ratchet portion 2033 is separated from the rotating toothed ring 202 in an unlocked state.

[0060] The fixed shaft 201 includes a thrust surface 2011 for abutting against the second end 2032 of the ratchet tooth plate 203, and when the second end 2032 of the ratchet tooth plate 203 abuts against the thrust surface 2011, the ratchet tooth portion 2033 meshes with the rotating gear ring 202. The fixed shaft 201 is provided with a U-shaped groove 2012 beside the thrust surface 2011, and the U-shaped groove 2012 is located below the ratchet tooth plate 203. The bottom of the U-shaped groove 2012 is provided with a spring positioning groove 2013 for inserting the compression spring 204.

[0061] In this embodiment, the two rotation limit assemblies are symmetrically arranged about the midpoint center between the two rotation limit assemblies, thereby achieving: when the pedal body 3 rotates forward to the highest limit position relative to the pedal bracket 1, the second rotation limit assembly 2b limits the pedal body 3 from continuing to rotate forward; when the pedal body 3 rotates reversely to the lowest limit position relative to the pedal bracket 1, the first rotation limit assembly 2a limits the pedal body 3 from continuing to rotate reversely.

[0062] The following is an introduction to the specific motion state of the rotation limit assembly:

[0063] (I) See Figure 1 to Figure 4 At the beginning, the pedal body 3 is in the lowest limit position, at which time the first rotation limit assembly 2a is in a locked state and the second rotation limit assembly 2b is in an unlocked state:

[0064] (1) See Figure 5 , for the first rotation limiting component 2a:

[0065] ① The second end 2032 of the ratchet tooth plate 203 abuts against the thrust surface 2011, so the ratchet tooth plate 203 cannot rotate counterclockwise;

[0066] ② Further, under the pushing action of the compression spring 204, the ratchet portion 2033 of the ratchet tooth plate 203 is stuck in the rotating gear ring 202 and meshes with the rotating gear ring 202, so the rotating gear ring 202 cannot rotate counterclockwise, but the rotating gear ring 202 can rotate clockwise, so the pedal body 3 cannot rotate inwards, but can only rotate outwards;

[0067] (2) See Figure 6 , for the second rotation limiting component 2b:

[0068] Under the pushing action of the compression spring 204, the second end 2032 of the ratchet tooth plate 203 tilts upward and disengages from the thrust surface 2011, and the ratchet portion 2033 of the first end 2031 of the ratchet tooth plate 203 disengages from the rotating gear ring 202 downward;

[0069] At this time, there is no limit between the ratchet tooth plate 203 and the rotating tooth ring 202;

[0070] In summary, under the limiting action of the first rotation limiting assembly 2a, the pedal body 3 cannot continue to rotate inwards and can only rotate outwards, thereby achieving the rotation limit at the lowest position.

[0071] (ii) Rotate the pedal body 3 outward so that the pedal body 3 is between the lowest limit position and the highest position:

[0072] (1) For the first rotation limiting component 2a:

[0073] ① During the process of rotating the pedal body 3 outward, under the thrust of the compression spring 204, the ratchet portion 2033 of the first end 2031 of the ratchet tooth plate 203 gradually moves downward away from the rotating toothed ring 202;

[0074] ② The ratchet portion 2033 of the second end 2032 of the ratchet tooth plate 203 gradually separates upward from the thrust surface 2011;

[0075] Before the ratchet part 2033 is completely separated from the rotating gear ring 202, the height positioning of the pedal body 3 is achieved by relying on the engagement force between the ratchet part 2033 and the rotating gear ring 202. As long as the pedal body 3 is not rotated upward or downward with excessive force, the pedal body 3 can maintain the current height.

[0076] (2) For the second rotation limiting component 2b:

[0077] ① In the process of rotating the pedal body 3 outward, under the thrust of the compression spring 204, the ratchet portion 2033 of the first end 2031 of the ratchet tooth plate 203 gradually moves upward toward the rotating toothed ring 202 and meshes with the rotating toothed ring 202;

[0078] ② The ratchet portion 2033 of the second end 2032 of the ratchet tooth plate 203 gradually moves downward toward the thrust surface 2011 but does not directly abut against the thrust surface 2011;

[0079] At this time, the height positioning of the pedal body 3 is achieved by relying on the engagement force between the ratchet portion 2033 and the rotating gear ring 202. As long as the pedal body 3 is not rotated upward or downward with excessive force, the pedal body 3 can maintain the current height.

[0080] In summary, at this time, the first rotation limiting assembly 2a and the second rotation limiting assembly 2b both rely on the engaging force of the meshing connection between the ratchet portion 2033 and the rotating gear ring 202 to jointly achieve the height positioning of the pedal body 3, and the pedal body 3 can be rotated inward or outward.

[0081] (III) See Figure 7 , continue to rotate the pedal body 3 outwards, so that the pedal body 3 is in the highest position:

[0082] (1) See Figure 8 , for the first rotation limiting component 2a:

[0083] Under the pushing action of the compression spring 204, the second end 2032 of the ratchet tooth plate 203 tilts upward and disengages from the thrust surface 2011, and the ratchet portion 2033 of the first end 2031 of the ratchet tooth plate 203 disengages from the rotating gear ring 202 downward;

[0084] At this time, there is no limit between the ratchet tooth plate 203 and the rotating tooth ring 202;

[0085] (2) See Fig. 9 , for the second rotation limiting component 2b:

[0086] ① The second end 2032 of the ratchet tooth plate 203 moves downward until it abuts against the thrust surface 2011, so that the ratchet tooth plate 203 cannot continue to rotate upward;

[0087] ② Further, under the pushing action of the compression spring 204, the ratchet portion 2033 of the ratchet tooth plate 203 is stuck in the rotating gear ring 202 and meshes with the rotating gear ring 202, so that the rotating gear ring 202 cannot continue to rotate upward, but the rotating gear ring 202 can rotate downward;

[0088] In summary, under the limiting action of the second rotation limiting assembly 2b, the pedal body 3 cannot continue to rotate upward and can only rotate downward, thereby achieving the rotation limit at the highest position.

[0089] In summary, the adjustable footrest and seat provided in this embodiment have the following advantages:

[0090] ① The pedal body 3 is rotatably mounted on the pedal bracket 1. Therefore, by rotating the pedal body 3 to different positions, different height supports can be provided for the feet, thereby effectively solving the problem that the existing pedal height cannot be adjusted.

[0091] Furthermore, in order to prevent the pedal body 3 from rotating 360° without restriction, the adjustable pedal is provided with two rotation limit assemblies with different rotation direction restrictions to ensure that the pedal body 3 rotates within a specified height range.

[0092] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0093] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An adjustable footrest, characterized in that: It comprises a pedal bracket (1), two rotation limiting components, and a pedal body (3) rotatably mounted on the pedal bracket (1) via the two rotation limiting components; When the pedal body (3) rotates forwardly relative to the pedal bracket (1) to the highest limit position, one of the rotation limiting components limits the pedal body (3) from continuing to rotate forwardly; When the pedal body (3) rotates in the opposite direction relative to the pedal bracket (1) to the lowest limit position, another rotation limiting component limits the pedal body (3) from continuing to rotate in the opposite direction; The footrest bracket (1) comprises two connecting rods (101); Wherein, each of the connecting rods (101) is rotationally connected to the pedal body (3) via a rotation limiting assembly; The rotation limiting assembly comprises: A fixed shaft (201), the fixed shaft (201) being connected to the connecting rod (101) for synchronous rotation; A rotating gear ring (202), the rotating gear ring (202) is synchronously connected to the pedal body (3) for rotation, and the rotating gear ring (202) is sleeved on the outside of the fixed shaft (201) and is connected to the fixed shaft (201) for rotation; A ratchet tooth plate (203), wherein the ratchet tooth plate (203) is rotatably connected to the fixed shaft (201) via a ratchet shaft (205), and a ratchet tooth portion (2033) meshing with the rotating gear ring (202) is provided on the outer side of the first end (2031) of the ratchet tooth plate (203); A compression spring (204), wherein the compression spring (204) is connected to the ratchet tooth plate (203); The ratchet tooth plate (203) has a locked state in which it is driven by the compression spring (204) to rotate relative to the rotating toothed ring (202) until the ratchet portion (2033) is engaged with the rotating toothed ring (202), and has an unlocked state in which it is driven by the compression spring (204) to rotate relative to the rotating toothed ring (202) until the ratchet portion (2033) is separated from the rotating toothed ring (202).

2. The adjustable footrest according to claim 1, characterized in that: The fixed shaft (201) includes a thrust surface (2011) for abutting against the second end (2032) of the ratchet tooth plate (203), and when the second end (2032) of the ratchet tooth plate (203) abuts against the thrust surface (2011), the ratchet portion (2033) engages with the rotating gear ring (202).

3. The adjustable footrest according to claim 2, characterized in that: The fixed shaft (201) is provided with a U-shaped groove (2012) beside the thrust surface (2011), and the U-shaped groove (2012) is located below the ratchet tooth plate (203).

4. The adjustable footrest according to claim 3, characterized in that: The bottom of the U-shaped groove (2012) is provided with a spring positioning groove (2013) for inserting the lower end of the compression spring (204).

5. The adjustable footrest according to claim 2, characterized in that: The two rotation limiting components are arranged symmetrically about the center of the midpoint between the two rotation limiting components.

6. A seat, characterized in that: It comprises a seat body and the adjustable footrest according to any one of claims 1-5.

Images