Folding leg support

Abstract

The utility model provides a folding type leg placing support which comprises a top seat, a pair of guide rods are arranged at the bottom of the top seat, the guide rods are arranged below the top seat in an extending / retracting mode, an upturning seat is arranged below the top seat, the upturning seat is located between the two guide rods and connected with the two guide rods in a rotating mode, and the upturning seat is connected with the two guide rods in a rotating mode. The upturning seat is connected with the two guide rods through angle adjusters, the top seat located above the upturning seat limits upward turning of the upturning seat, downward turning of the upturning seat is limited by the angle adjusters at the moment, the guide rods drive the upturning seat to stretch out, the upturning seat breaks away from the limiting range of the top seat, and the upturning seat is fixed to the top seat. And the upturning seat is turned out upwards and unfolded forwards. The top seat is used for being fixed to the bottom of a seat, when the leg placing function is used, the upturning seat needs to be pulled out from the lower portion of the top seat firstly, then the upturning seat is turned upwards so that the upturning seat can be unfolded, and the position of the upturning seat can be adjusted through the telescopic guide rod.

Description

Technical Field

[0001] This utility model relates to the field of seat accessories, and in particular to a folding leg rest bracket. Background Technology

[0002] Leg rests are an important feature in modern chair design for enhancing comfort and ergonomics. At their core, they utilize adjustable or foldable leg support structures to reduce pressure on the calves, ankles, and feet during prolonged sitting, improving blood circulation and alleviating fatigue. Technically, common types include manually folding (such as hidden footrests), sliding telescopic types, multi-level height adjustment types, or electrically linked mechanisms (tilting synchronously with the backrest). Some high-end products also support multi-angle free adjustment or memory functions. For example, gaming chairs and office chairs often employ hidden designs that unfold quickly when needed, saving space; home sofas tend to link the leg rest with the backrest, creating a fully relaxed reclining posture. This feature is particularly suitable for prolonged sitting (such as office work, gaming, and reading), distributing body pressure, optimizing posture, reducing the burden on the lumbar and spinal spine, and simultaneously meeting diverse needs for rest and sleep, making it a key indicator of chair comfort. This utility model aims to provide a novel manually folding leg rest bracket. Utility Model Content

[0003] In view of the above-mentioned prior art, the purpose of this utility model is to provide a foldable leg rest bracket.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a foldable leg rest bracket, including a top base. A pair of guide rods are provided at the bottom of the top base. The guide rods are extended / retractable and installed below the top base. An upward-flipping seat is provided below the top base. The upward-flipping seat is located between the two guide rods and is rotatably connected to the two guide rods. The upward-flipping seat is connected to the two guide rods through an angle adjuster. The top base, located above the upward-flipping seat, restricts the upward flipping of the upward-flipping seat. At this time, the downward flipping of the upward-flipping seat is restricted by the angle adjuster. The guide rods drive the upward-flipping seat to extend, and the upward-flipping seat is released from the restriction range of the top base. The upward-flipping seat flips upward and unfolds forward.

[0006] Further, for the folding leg rest bracket, upper turning arms are provided on both sides of the upper turning seat. The upper turning arms are fixedly connected to the angle adjuster. The angle adjuster includes a rotating shaft, an inner rotating member and an outer rotating member which are arranged on the rotating shaft and rotate on the rotating shaft. The inner rotating member is fixedly connected to the upper turning arm, and the outer rotating member is fixedly connected to the corresponding guide rod. A locking adjustment space and a free travel adjustment space are provided on the outer rotating member. One end of the free travel adjustment space is communicated with the locking adjustment space, and an unlocking space is provided at the other end of the free travel adjustment space. An inner adjustment space is provided on the inner rotating member. An elastic member and a wedge portion are provided in the inner adjustment space. A locking block is arranged in the wedge portion, and the locking block penetrates through the locking adjustment space or the free travel adjustment space of the outer rotating member.

[0007] Further, for the folding leg rest bracket, a wedge-shaped hole is provided at the end of the end of the upper turning arm connected to the angle adjuster. The locking block is also located in the wedge-shaped hole of the upper turning arm. The locking adjustment space is located on the side of the outer rotating member close to the guide rod, and the free travel adjustment space is located on the side of the outer rotating member away from the guide rod. The upper turning arm is fixedly connected to the inner rotating member, and the outer rotating member is fixedly connected to the guide rod.

[0008] Further, for the folding leg rest bracket, the locking adjustment space, the free travel adjustment space and the unlocking space are connected arc-shaped hollow grooves. Among them, a section of limiting teeth matching with the locking block is provided on the outer side of the locking adjustment space, and a transition slope matching with the locking block is provided at the connection between the unlocking space and the free travel adjustment space.

[0009] Further, for the folding leg rest bracket, a limiting housing for limiting the movement range of the guide rod is provided at the front end of the guide rod. The inner rotating member is fixedly connected to the limiting housing.

[0010] Further, for the folding leg rest bracket, a connecting handle is provided in the limiting housing. One end of the connecting handle is fixedly connected to the outer rotating member, and the other end of the connecting handle is connected to the guide rod.

[0011] Further, for the folding leg rest bracket, the other end of the connecting handle is in a "mountain" shape and the middle part thereof is inserted into the guide rod.

[0012] Further, for the folding leg rest bracket, a pair of slots are provided on the guide rod, and the slots are docked with the concave portions of the connecting handle.

[0013] Furthermore, in the folding leg rest bracket, the connecting handle and the inner rotating component are fixedly connected by a pin, and the other end of the connecting handle is connected to the guide rod and the limiting housing by a screw at the middle of the "mountain" shape. The outer rotating component and the connecting handle are connected to the limiting housing by screws.

[0014] Furthermore, in the folding leg support bracket, the guide rod is a round rod, the tail end of the guide rod is equipped with a limiting screw, and the bottom of the top seat is provided with guide tubes on both sides, and the guide rod slides in the guide tubes.

[0015] Compared to existing technologies, this utility model provides a folding leg rest bracket, including a top seat. A pair of guide rods are disposed at the bottom of the top seat, and these guide rods are extendable / retractable below the top seat. A flip-up seat is disposed below the top seat, located between and rotatably connected to the two guide rods. The flip-up seat is connected to the two guide rods via an angle adjuster. The top seat, located above the flip-up seat, restricts the upward flipping of the flip-up seat. At this time, the downward flipping of the flip-up seat is restricted by the angle adjuster. The guide rods drive the flip-up seat to extend, and the flip-up seat moves out of the restriction range of the top seat, flipping upward and unfolding forward. The top seat of this utility model is used to fix the seat to the bottom. When using the leg rest function, the flip-up seat needs to be pulled out from under the top seat first, and then flipped upward to unfold the flip-up seat. The position of the flip-up seat can be adjusted by extending the guide rods. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the folded state structure of the foldable leg support provided by this utility model.

[0018] Figure 2 This is a schematic diagram of the unfolded state of the folding leg support provided by this utility model.

[0019] Figure 3 An exploded view of the angle adjuster of the folding leg support provided by this utility model.

[0020] Figure 4 Exploded view of the connection between the angle adjuster and the guide rod of the folding leg rest bracket provided by this utility model. Figure 1 .

[0021] Figure 5 Exploded view of the connection between the angle adjuster and the guide rod of the folding leg rest bracket provided by this utility model. Figure 2 .

[0022] Explanation of icon numbers:

[0023] Top seat 10

[0024] Guide rod 11

[0025] Upward-folding seat 12

[0026] Angle adjuster 13

[0027] Upper arm 14

[0028] Rotating shaft 15

[0029] Internal transfer 16

[0030] External transfer part 17

[0031] Locking adjustment space 18

[0032] Empty line adjustment space 19

[0033] Internal adjustment space 20

[0034] wedge-shaped part 21

[0035] wedge hole 22

[0036] Transition slope 23

[0037] Limit screw 24

[0038] Catheter 25

[0039] Connecting handle 26

[0040] Slot 27

[0041] Limiting housing 28

[0042] Unlock Space 29 Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] like Figure 1 , Figure 2As shown, the present invention provides a folding leg rest bracket, including a top seat 10. A pair of guide rods 11 are provided at the bottom of the top seat 10. The guide rods 11 are extended / retractable and installed below the top seat 10. A flip-up seat 12 is provided below the top seat 10. The flip-up seat 12 is located between the two guide rods 11 and is rotatably connected to the two guide rods 11. The flip-up seat 12 is connected to the two guide rods 11 through an angle adjuster 13. The top seat 10, located above the flip-up seat 12, restricts the upward flipping of the flip-up seat 12. At this time, the downward flipping of the flip-up seat 12 is restricted by the angle adjuster 13. The guide rods 11 drive the flip-up seat 12 to extend. The flip-up seat 12 is released from the restriction range of the top seat 10. The flip-up seat 12 flips upward and unfolds forward. The top seat 10 of this invention is used to fix the seat to the bottom. When using the leg rest function, the flip-up seat 12 needs to be pulled out from under the top seat 10 first, and then the flip-up seat 12 is flipped upwards to unfold it. The front and rear positions of the flip-up seat 12 can be adjusted by the telescopic guide rod 11. In this invention, a leg rest pad is installed on the top of the flip-up seat 12. When the flip-up seat 12 is folded, it is in a horizontal state or within a small range above and below the horizontal state. The flip angle of the flip-up seat 12 exceeds 180° but does not exceed 270°. When folded, the leg rest pad is set downwards, and when unfolded, the leg rest pad is set upwards. In the folded state, the leg rest is restricted from flipping upwards by the top seat 10 or its fixings, while the angle adjuster 13 restricts its downward flipping, allowing the flip-up seat 12 to fit snugly against the bottom of the seat, minimizing space usage and creating a minimalist design. When using the leg rest function, the flip-up seat 12 must first be pulled out to release its upward flipping restriction, and then flipped upwards. If the initial angle of the flip-up seat 12 is 0°, it can be flipped upwards to a range of 180° to 270°. The angle adjuster 13 can be set to corresponding positions, allowing the flip-up seat 12 to achieve the corresponding angle adjustment within this range. The basic function of the angle adjuster 13 in this application is for the flipping of the flip-up seat 12 within the restricted range; furthermore, it can be used for angle adjustment within a corresponding angle range. When not using the leg rest function, the guide rod 11 must first be pulled out a certain distance to allow the flip-up seat 12 to flip back. After flipping the flip-up seat 12 back, it is then pushed back into the bottom of the seat, and the upward flipping of the flip-up seat 12 is restricted again.

[0047] like Figure 3As shown, further, the folding leg rest bracket provided by this utility model has upper-flipping arms 14 on both sides of the upper-flipping seat 12. The upper-flipping arms 14 are fixedly connected to the angle adjuster 13. The angle adjuster 13 includes a rotating shaft 15 and an inner rotating component 16 and an outer rotating component 17 mounted on and rotating on the rotating shaft 15. The inner rotating component 16 is fixedly connected to the upper-flipping arm 14, and the outer rotating component 17 is fixedly connected to a corresponding guide rod 11. The outer rotating component 17 is provided with a locking adjustment. Space 18 and empty space adjustment space 19, one end of the empty space adjustment space 19 is connected to the locking adjustment space 18, and the other end of the empty space adjustment space 19 is provided with an unlocking space 29. The inner rotating member 16 is provided with an inner adjustment space 20. The inner adjustment space 20 is provided with an elastic member (not shown in the figure) and a wedge-shaped part 21. A locking block (not shown in the figure) is installed in the wedge-shaped part 21, and the locking block passes through the locking adjustment space 18 or the empty space adjustment space 19 of the outer rotating member 17. Furthermore, in the folding leg rest bracket provided by this utility model, a wedge-shaped hole 22 is provided at the end of the upper arm 14 connected to the angle adjuster 13, and the locking block is also located in the wedge-shaped hole 22 of the upper arm 14. This is beneficial to enhance the structural performance. The locking adjustment space 18 is located on the side of the outer rotating part 17 near the guide rod 11, and the free-slip adjustment space 19 is located on the side of the outer rotating part 17 away from the guide rod 11. The upper arm 14 is fixedly connected to the inner rotating part 16, and the outer rotating part 17 is fixedly connected to the guide rod 11. Furthermore, in the folding leg rest bracket provided by this utility model, the locking adjustment space 18, the free-slip adjustment space 19, and the unlocking space 29 are connected arc-shaped hollow grooves. The outer side of the locking adjustment space 18 has a limiting tooth that cooperates with the locking block, and the connection between the unlocking space 29 and the free-slip adjustment space 19 has a transition slope 23 that cooperates with the locking block. The angle adjuster 13 achieves angle adjustment through the cooperation of an elastic member, a locking block, a wedge (the wedge has a locking end; when the tail end of the locking block is located at the locking end, the tooth end of the locking block is in an active state, the elastic member cooperates with the tooth end of the locking block, driving the tooth end of the locking block to maintain connection with the tooth of the locking adjustment space, and the locking block is in a locked state; the wedge has an unlocking end; when the tooth end of the locking block is located at the unlocking end (a small step that cooperates with the tooth end of the locking block), the tail end of the locking block rests against the inner wall of the wedge under the action of the elastic member, and the locking block is in an unlocked state) and a tooth segment. This is prior art and will not be described in detail here. As an example, the elastic member, locking block, and wedge of this embodiment can refer to an angle adjustment device disclosed in the utility model with publication number CN219699466U.

[0048] Specifically, in the folded state, the locking block is located in the unlocking space 29, at which time the locking block is in the unlocked state. When the flip-up seat 12 is pulled out and flipped up, the locking block first passes through the empty adjustment space 19, then enters the locking adjustment space 18, and then the locking block abuts against the end, pushing the locking block into the locking state. At this time, the flip-up seat 12 has been unfolded to the maximum angle. When the flip-up seat 12 is flipped back, the locking block can be fixed at the corresponding gear in the locking space for resting the leg. When folding, the flip-up seat 12 is flipped back again, the locking block enters the empty adjustment space 19, and then enters the unlocking space 29. The locking block is then adjusted by the transition slope 23 and the end to enter the unlocked state.

[0049] Furthermore, in the folding leg rest bracket provided by this utility model, the guide rod 11 is a round rod, and a limiting screw 24 is installed at the tail end of the guide rod 11. Guide tubes 25 are provided on both sides of the bottom of the top seat 10, and the guide rod 11 slides within the guide tubes 25. Furthermore, in the folding leg rest bracket provided by this utility model, a limiting housing 28 is provided at the front end of the guide rod 11 to limit the range of motion of the guide rod 11, and the inner rotating part 16 is fixedly connected to the limiting housing 28. The limiting housing 28 is used to limit the guide tube 25 from moving forward, and the limiting screw 24 is used to limit the guide tube 25 from moving backward.

[0050] like Figure 4 , Figure 5 As shown, further, in the folding leg rest bracket provided by this utility model, a connecting handle 26 is provided inside the limiting housing 28. One end of the connecting handle 26 is fixedly connected to the extension arm of the outer rotating member 17, and the other end of the connecting handle 26 is connected to the guide rod 11. Further, in the folding leg rest bracket provided by this utility model, the other end of the connecting handle 26 is shaped like a "mountain" and its middle portion is inserted into the guide rod 11. Further, in the folding leg rest bracket provided by this utility model, a pair of slots 27 are provided on the guide rod 11, and the slots 27 mate with the recesses of the connecting handle 26. The connecting handle 26 is arranged longitudinally, thus having high structural strength in the vertical direction and ensuring a stable connection between the guide rod 11 and the inner rotating member 16. Specifically, in the folding leg support provided by this utility model, the connecting handle 26 is fixedly connected to the inner rotating part 16 by a pin, the middle part of the other end of the connecting handle 26 is connected to the guide rod 11 and the limiting housing 28 by screws, and the outer rotating part 17 and the connecting handle 26 are connected to the limiting housing 28 by screws.

[0051] In summary, the top seat of this invention is used to fix the seat to the bottom. When using the leg rest function, the upper seat needs to be pulled out from under the top seat first, and then the upper seat is flipped upwards to unfold. The front and rear position of the upper seat can be adjusted by the telescopic guide rod. In this invention, a leg rest pad is installed on the upper seat. When the upper seat is folded, it is in a horizontal state or within a small range above and below the horizontal state. The flip angle of the upper seat exceeds 180° but does not exceed 270°. When folded, the leg rest pad is set downwards; when unfolded, the leg rest pad is set upwards. In the folded state, the leg rest is restricted from flipping upwards by the top seat or its fixings, while the angle adjuster restricts its downward flipping. This allows the flip-up seat to fit snugly against the bottom of the seat, minimizing space usage and creating a minimalist design. To use the leg rest function, the flip-up seat must first be pulled out to release its upward flipping restriction, and then flipped upwards. If the initial angle of the flip-up seat is 0°, it can be flipped upwards to a range of 180° to 270°. The angle adjuster can be set to corresponding positions, allowing for angle adjustment within this range. The basic function of the angle adjuster in this application is to allow the flip-up seat to flip within its restricted range; furthermore, it can be used to adjust the angle positions within a corresponding angle range. When the leg rest function is not in use, the guide rod must first be pulled out a certain distance to allow the flip-up seat to flip back. After flipping back, the flip-up seat is pushed back into the bottom of the seat, and its upward flipping is restricted again.

[0052] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A folding leg rest bracket, characterized in that, It includes a top seat. A pair of guide rods are provided at the bottom of the top seat. The guide rods are installed below the top seat in a manner that they can extend / retract. An upward-flipping seat is provided below the top seat. The upward-flipping seat is located between the two guide rods and is rotatably connected to the two guide rods. The upward-flipping seat is connected to the two guide rods through an angle adjuster. The top seat above the upward-flipping seat restricts the upward flipping of the upward-flipping seat. At this time, the downward flipping of the upward-flipping seat is restricted by the angle adjuster. The guide rods drive the upward-flipping seat to extend, and the upward-flipping seat gets out of the restriction range of the top seat, and the upward-flipping seat flips upward and expands forward.

2. The folding leg rest bracket according to claim 1, characterized in that, Upper-flipping arms are provided on both sides of the upward-flipping seat. The upper-flipping arms are fixedly connected to the angle adjuster. The angle adjuster includes a rotating shaft and an inner rotating part and an outer rotating part that are installed on the rotating shaft and rotate on the rotating shaft. The inner rotating part is fixedly connected to the upper-flipping arm. The outer rotating part is fixedly connected to the corresponding guide rod. A locking adjustment space and a free-travel adjustment space are provided on the outer rotating part. One end of the free-travel adjustment space is connected to the locking adjustment space, and the other end of the free-travel adjustment space is provided with an unlocking space. An inner adjustment space is provided on the inner rotating part. An elastic member and a wedge-shaped part are provided in the inner adjustment space. A locking block is installed in the wedge-shaped part, and the locking block penetrates through the locking adjustment space or the free-travel adjustment space of the outer rotating part.

3. The folding leg rest bracket according to claim 2, characterized in that, A wedge-shaped hole is provided at the end of the end of the upper-flipping arm connected to the angle adjuster. The locking block is also located in the wedge-shaped hole of the upper-flipping arm. The locking adjustment space is located on the side of the outer rotating part close to the side where the guide rod is located. The free-travel adjustment space is located on the side of the outer rotating part far from the side where the guide rod is located. The upper-flipping arm is fixedly connected to the inner rotating part, and the outer rotating part is fixedly connected to the guide rod.

4. The folding leg rest bracket according to claim 3, characterized in that, A limit housing for restricting the movement range of the guide rod is provided at the front end of the guide rod. The inner rotating part is fixedly connected to the limit housing.

5. The folding leg rest bracket according to claim 4, characterized in that, A connecting handle is provided in the limit housing. One end of the connecting handle is fixedly connected to the outer rotating part, and the other end of the connecting handle is connected to the guide rod.

6. The folding leg rest bracket according to claim 5, characterized in that, The other end of the connecting handle is in a "mountain" shape and its middle part is inserted into the guide rod.

7. The folding leg rest bracket according to claim 6, characterized in that, A pair of slots are provided on the guide rod, and the slots are docked with the concave part of the connecting handle.

8. The folding leg rest bracket according to claim 7, characterized in that, The connecting handle and the inner rotating part are fixedly connected by a pin. The middle part of the "mountain" shape at the other end of the connecting handle is connected to the guide rod and the limit housing by a screw. The outer rotating part and the connecting handle are connected to the limit housing by a screw.

9. The folding leg rest bracket according to claim 3, characterized in that, The locking adjustment space, the free-travel adjustment space and the unlocking space are connected arc-shaped hollow grooves. Among them, the outer side of the locking adjustment space has a section of limit teeth that cooperate with the locking block, and the connection part between the unlocking space and the free-travel adjustment space has a transition slope surface that cooperates with the locking block.

10. The folding leg rest bracket according to any one of claims 1-9, characterized in that, The guide rod is a round rod. A limit screw is installed at the tail end of the guide rod. Guide tubes are provided on both sides at the bottom of the top seat, and the guide rod slides in the guide tubes.

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