Seat leg rest mechanism and seat

Abstract

The utility model belongs to the technical field of seat leg support, especially, relate to a seat leg support mechanism and seat. A seat leg support mechanism includes folding shield, leg support mounting plate, adjusting mechanism and leg support support plate, one side of leg support support plate is hinged with leg support mounting plate, adjusting mechanism is located between leg support mounting plate and leg support support plate, and adjusting mechanism is used for driving leg support support plate to overturn, folding shield includes shield body, is provided with a plurality of creases of distribution along the overturning direction of leg support support plate on shield body, one side of shield body is connected with leg support mounting plate, and the position of the other side of shield body is fixed relative to leg support support plate, in folding back position, leg support support plate is pasted with leg support mounting plate, and shield body is folded according to crease, when leg support support plate of folding back position overturns to unfolded position, leg support support plate drives shield body to unfold, and the opening is formed between leg support support plate and leg support mounting plate, and shield body closes the opening.

Description

Technical Field

[0001] This utility model belongs to the field of seat leg support technology, and in particular relates to a seat leg support mechanism and a seat. Background Technology

[0002] Some vehicle seats are equipped with leg support mechanisms that can be flipped to extend the support length of the seat cushion, providing support for the occupant's legs and reducing leg fatigue.

[0003] Existing leg support mechanisms expose their mechanical structures to the outside environment, affecting customer experience and posing certain safety risks. Summary of the Invention

[0004] The technical problem to be solved by this utility model is: to address the issue that the mechanical structure of existing leg support mechanisms is exposed to the outside world, which affects customer experience and poses certain safety risks, and to provide a seat leg support mechanism and seat.

[0005] To solve the above-mentioned technical problems, on the one hand, this utility model provides a seat leg support mechanism, including a folding cover, a leg support mounting plate, an adjustment mechanism, and a leg support support plate. One side of the leg support support plate is hinged to the leg support mounting plate. The adjustment mechanism is located between the leg support mounting plate and the leg support support plate. The adjustment mechanism is used to drive the leg support support plate to flip between a folded position and an unfolded position relative to the leg support mounting plate. The folding cover includes a cover body, on which multiple folds are provided along the flipping direction of the leg support plate. One side of the cover body is connected to the leg support mounting plate, and the other side of the cover body is fixed relative to the position of the leg support plate. In the folded-back position, the leg support plate is attached to the leg support mounting plate, and the cover body is folded along the crease; when the leg support plate in the folded-back position flips to the unfolded position, the leg support plate drives the cover body to unfold, and an opening is formed between the leg support plate and the leg support mounting plate, and the cover body closes the opening.

[0006] Optionally, the protective cover body includes a cover end surround and two cover side surrounds. The two cover side surrounds are spaced apart along the hinge axis of the leg support plate. The cover end surround connects the outer edge of the two cover side surrounds, and the cover end surround and the two cover side surrounds form a U-shaped structure.

[0007] Optionally, the folding cover further includes an upper connecting frame and a lower connecting frame, the upper connecting frame and the lower connecting frame being U-shaped. The upper connecting frame connects to the outer periphery of the cover body near the leg support plate, and the lower connecting frame connects to the outer periphery of the cover body near the leg support mounting plate. The upper connecting frame connects to the leg support plate, and the lower connecting frame connects to the leg support mounting plate.

[0008] Optionally, the folding shield further includes a frame that is fitted and fixed at the fold.

[0009] Optionally, the skeleton includes an inner support ring and an outer support ring, and the plurality of creases are divided into inner creases and outer creases. The plurality of inner creases and outer creases are arranged alternately along the unfolding direction of the protective cover body. An inner crease is provided between two adjacent outer creases, and the inner crease is located inside the outer crease. The inner layer support ring is provided at the inner layer crease, and the outer layer support ring is provided at the outer layer crease.

[0010] Optionally, both the inner and outer support rings are metal wire rings.

[0011] Optionally, the adjustment mechanism includes a lifting airbag assembly disposed between the leg support plate and the leg support mounting plate; when the leg support plate is in the folded-back position, the lifting airbag assembly is completely deflated, and the lifting airbag assembly can be inflated to push the leg support plate to flip towards the unfolded position.

[0012] Optionally, the seat leg support mechanism further includes a leg support airbag assembly, which is disposed on the side of the leg support support plate facing away from the leg support mounting plate.

[0013] Optionally, it also includes a leg support cover and a leg support foam layer, the leg support foam layer being located on top of the leg support air bag assembly, the leg support cover being fitted over the leg support foam layer, and the other side of the protective cover body being connected to the leg support cover, the protective cover body isolating the leg support air bag assembly from the outside world.

[0014] On the other hand, this utility model embodiment provides a seat, including a seat frame and the aforementioned seat leg support mechanism, wherein the leg support mounting plate is fixed on the seat frame.

[0015] In the seat leg support mechanism of this utility model, the adjustment mechanism can drive the leg support support plate to flip between the folded-back position and the unfolded position relative to the leg support mounting plate. During the flipping process of the leg support support plate from the folded-back position to the unfolded position, the leg support support plate drives the other side of the cover body to move, so that the cover body unfolds synchronously to close the opening formed between the leg support support plate and the leg support mounting plate, isolate the adjustment mechanism from the outside world, protect the parts of the adjustment mechanism, prevent the occupant from accidentally touching the adjustment mechanism during use, improve safety, and at the same time improve the cleanliness of the seat leg support mechanism. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a seat provided in one embodiment of the present invention; Figure 2 yes Figure 1 A cross-sectional view of the seat leg support mechanism; Figure 3 yes Figure 1 Exploded view of the seat leg support mechanism; Figure 4 yes Figure 1 A schematic diagram of the seat leg support mechanism in the folded-back position; Figure 5 yes Figure 1 A schematic diagram of the seat leg support mechanism in the unfolded position; Figure 6 yes Figure 5 A schematic diagram of the structure of the folding protective cover; Figure 7 yes Figure 6 A structural diagram from another perspective.

[0017] The reference numerals in the accompanying drawings are as follows: 1. Seat frame; 2. Leg rest mounting plate; 3. Leg rest support plate; 4. Adjustment mechanism; 5. Leg rest airbag assembly; 6. Leg rest foam layer; 7. Leg rest cover; 8. Folding cover; 81. Cover body; 811. Crease; 8111. Inner crease; 8112. Outer crease; 82. Cover end surround; 83. Cover side surround; 84. Upper connecting frame; 85. Lower connecting frame; 86. Inner support ring; 87. Outer support ring. Detailed Implementation

[0018] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] like Figures 1 to 3As shown in the figure, an embodiment of the present invention provides a seat, including a seat frame 1 and a seat leg support mechanism. The seat leg support mechanism includes a folding cover 8, a leg support mounting plate 2, an adjustment mechanism 4, and a leg support support plate 3. The leg support mounting plate 2 is fixed to the seat frame 1. One side of the leg support support plate 3 is hinged to the leg support mounting plate 2. The adjustment mechanism 4 is located between the leg support mounting plate 2 and the leg support support plate 3. The adjustment mechanism 4 is used to drive the leg support support plate 3 to rotate relative to the leg support mounting plate 2 between a folded-back position and an unfolded position. The folded-back position is the position of the leg support support plate 3 when the seat is in a normal sitting posture.

[0020] The folding cover 8 includes a cover body 81, on which multiple creases 811 are provided along the flipping direction of the leg support plate 3. One side of the cover body 81 is connected to the leg support mounting plate 2, and the other side of the cover body 81 is fixed relative to the position of the leg support plate 3.

[0021] In the folded-back position, the leg support plate 3 fits against the leg support mounting plate 2, and the cover body 81 is folded along the crease 811; when the leg support plate 3 in the folded-back position flips to the unfolded position, the leg support plate 3 drives the cover body 81 to unfold, and an opening is formed between the leg support plate 3 and the leg support mounting plate 2, and the cover body 81 closes the opening.

[0022] Understandably, in order to achieve the folding function, the material of the protective cover body 81 needs to have low hardness and good ductility, so that it can deform during folding without breaking or fracturing.

[0023] Specifically, when a seat leg support mechanism is needed to support the human leg, such as... Figure 5 As shown, the adjustment mechanism 4 drives the leg support plate 3 to flip to the side away from the leg support mounting plate 2 to the unfolded position, thereby extending the length of the seat and providing support for the occupant's legs. During the flipping process, an opening is formed between the leg support plate 3 and the leg support mounting plate 2. The leg support plate 3 drives the other side of the cover body 81 to move, causing the cover body 81 to unfold in a fan shape simultaneously, thereby closing the opening and isolating the adjustment mechanism 4 from the outside world, thus protecting the adjustment mechanism 4.

[0024] When the leg support mechanism is not needed to support the legs, the adjustment mechanism 4 drives the leg support plate 3 to flip towards the side closer to the leg support mounting plate 2 to the folded-back position. The leg support plate 3 drives the other side of the cover body 81 to move, so that the cover body 81 folds and retracts along the crease 811. Figure 4 As shown.

[0025] It should be noted that the unfolding position does not refer to a specific position, but can be different flip positions. Thus, when the seat adjustment mechanism 4 is actually used, the leg support plate 3 can be flipped to different angles to meet the needs of passengers of different heights and body types.

[0026] In the seat of this utility model, the adjustment mechanism 4 of the seat leg support mechanism can drive the leg support support plate 3 to flip relative to the leg support mounting plate 2. During the flipping process of the leg support support plate 3 from the folded position to the unfolded position, the leg support support plate 3 drives the other side of the cover body 81 to move, so that the cover body 81 unfolds synchronously to close the opening formed between the leg support support plate 3 and the leg support mounting plate 2, isolate the adjustment mechanism 4 from the outside world, protect the parts of the adjustment mechanism 4, prevent the occupant from accidentally touching the adjustment mechanism 4 during use, improve safety, and at the same time improve the cleanliness of the seat leg support mechanism.

[0027] In one embodiment, the material of the protective cover body 81 is fabric.

[0028] In one embodiment, such as Figures 4 to 7 As shown, the protective cover body 81 includes a cover end surround 82 and two cover side surrounds 83. The two cover side surrounds 83 are spaced apart along the hinge axis of the leg support plate 3. The cover end surround 82 connects the outer edge of the two cover side surrounds 83, and the cover end surround 82 and the two cover side surrounds 83 form a U-shaped structure.

[0029] Since the opening formed between the leg support plate 3 and the leg support mounting plate 2 has three openings exposed to the passenger's field of vision, namely two openings along the left and right direction of the seat and an opening facing the front of the seat, the cover end cover 82 and the two cover side covers 83 can respectively close the three outward openings of the opening so that the adjustment mechanism 4 is completely enclosed in the cover body 81.

[0030] In other embodiments, the shield body 81 may only cover the end surround 82.

[0031] In one embodiment, such as Figure 3 As shown, the folding cover 8 also includes an upper connecting frame 84 and a lower connecting frame 85. The upper connecting frame 84 and the lower connecting frame 85 are U-shaped. The upper connecting frame 84 is connected to the outer periphery of the cover body 81 near the leg support plate 3, and the lower connecting frame 85 is connected to the outer periphery of the cover body 81 near the leg support mounting plate 2. The upper connecting frame 84 is connected to the leg support plate 3, and the lower connecting frame 85 is connected to the leg support mounting plate 2, so that the cover body 81 is connected to the leg support plate 3 through the upper connecting plate and to the leg support mounting plate 2 through the lower connecting plate.

[0032] The upper connecting frame 84 of the U-shape has the same shape as the U-shaped structure of the shield body 81, and the lower connecting frame 85 of the U-shape has the same shape as the U-shaped structure of the shield body 81. The upper connecting frame 84 and the lower connecting frame 85 can maintain the U-shaped structure of the shield body 81 well.

[0033] Specifically, the upper connecting frame 84 and the lower connecting frame 85 have the same structure. Taking the upper connecting frame 84 as an example, its connection relationship with the cover body 81 will be described. The upper connecting frame 84 includes a first frame edge, a second frame edge, and a third frame edge. The first and third frame edges are spaced apart along the hinge axis of the leg support plate 3. The second frame edge connects the first and third frame edges, so that the first, second, and third frame edges form a U-shaped upper connecting frame 84. One side panel 83 of the cover body 81 is connected to the leg support plate 3 via the first frame edge, and the other side panel 83 of the cover body 81 is connected to the leg support plate 3 via the third frame edge. The end panel 82 of the cover body 81 is connected to the leg support plate 3 via the second frame edge.

[0034] In one embodiment, such as Figures 5 to 7 As shown, the folding shield 8 also includes a skeleton, which is embedded and fixed at the crease 811.

[0035] The frame provides fixed support for the protective cover body 81. When the protective cover body 81 is unfolded, the frame maintains its predetermined shape, preventing it from collapsing or deforming and ensuring the integrity of the protective space. When the protective cover body 81 is folded, the frame limits the folding direction and angle through its own structure, ensuring an orderly and smooth folding process. Furthermore, the frame enhances the overall strength of the folded protective cover 8, resisting external impacts or compression and protecting the internal adjustment mechanism 4.

[0036] Preferably, the upper side of the skeleton is connected to the upper connecting frame 84, and the lower side of the skeleton is connected to the lower connecting frame 85.

[0037] In one embodiment, such as Figures 5 to 7 As shown, the skeleton includes an inner support ring 86 and an outer support ring 87. Multiple creases 811 are divided into inner creases 8111 and outer creases 8112. Multiple inner creases 8111 and outer creases 8112 are arranged alternately along the unfolding direction of the protective cover body 81. An inner crease 8111 is provided between two adjacent outer creases 8112. The inner crease 8111 is located inside the outer crease 8112.

[0038] An inner layer support ring 86 is provided at the inner layer crease 8111, and an outer layer support ring 87 is provided at the outer layer crease 8112.

[0039] The inner support ring 86 at the inner crease 8111 and the outer support ring 87 at the outer crease 8112 can share the stress when the protective cover body 81 is folded, reducing the risk of tearing and permanent deformation.

[0040] Moreover, the alternating inner crease 8111 and outer crease 8112 form a "preset trajectory". The inner crease 8111 and outer crease 8112 form a bidirectional guide, which can limit the shield body 81 to bend along the preset trajectory, making the folding trajectory more accurate and avoiding the deviation and distortion caused by a single crease 811 (only the inner crease 8111 or the outer crease 8112). This is conducive to the shield body 81 quickly restoring the preset shape after unfolding, avoiding wrinkle residue, and is more conducive to the integrity of the protective space of the shield body 81.

[0041] In other embodiments, the crease 811 may be either an inner crease 8111 or an outer crease 8112. An inner support ring 86 may be embedded at the inner crease 8111, and an outer support ring 87 may be embedded at the outer crease 8112.

[0042] In one embodiment, both the inner support ring 86 and the outer support ring 87 are metal wire rings, which are low in cost and lightweight in structure. Specifically, the metal wire rings are formed by stringing together steel wires.

[0043] In other embodiments, the inner support ring 86 can be a U-shaped inner connecting plate, which is formed by splicing three sequentially connected plate frame edges. The inner connecting plate can be a plastic plate and can be sewn into the inner fold 8111 of the protective cover body 81. The outer support ring 87 can be a U-shaped outer connecting plate, which is formed by splicing three sequentially connected plate frame edges. The outer connecting plate can be a plastic plate and can be sewn into the outer fold 8112 of the protective cover body 81.

[0044] In other embodiments, the skeleton may include multiple metal wires, with multiple metal wires embedded and fixed at each crease 811.

[0045] In one embodiment, such as Figure 2 and Figure 3 As shown, the adjustment mechanism 4 includes a lifting airbag assembly, which is disposed between the leg support plate 3 and the leg support mounting plate 2. When the leg support plate 3 is in the folded-back position, the lifting airbag assembly is completely deflated, allowing it to inflate and expand to push the leg support plate 3 to the unfolded position.

[0046] Inflating the lifting airbag assembly causes the expanded assembly to flip the leg support plate 3 towards the unfolded position. Deflating the lifting airbag assembly flattens it, allowing the unfolded leg support plate 3 to flip inward to its folded-back position. Compared to existing mechanical adjustment mechanisms, this method utilizes the inflation height variation within the lifting airbag assembly to adjust the flipping position of the leg support plate 3. The lifting airbag assembly produces less noise and a smoother feel during inflation and deflation, enhancing the cabin's quietness and premium experience. Furthermore, the rapid inflation of the lifting airbag assembly allows for a faster lifting speed of the leg support plate 3. In the event of a vehicle accident, the lifting airbag assembly can deflate quickly, creating a safe space for occupants and significantly improving their safety. The lifting airbag assembly is also relatively inexpensive, significantly reducing the overall cost of the seat leg support mechanism.

[0047] In addition, during adjustment, the height of the lifting air bag group can be adjusted by controlling the inflation time and inflation speed of the lifting air bag group, so that the leg support plate 3 can be raised to different angles, realizing stepless adjustment of the leg support plate 3.

[0048] In other embodiments, the adjustment mechanism 4 can be a linkage mechanism, which is driven by a motor to rotate the leg support plate 3.

[0049] In one embodiment, such as Figure 2 and Figure 3 As shown, the seat leg support mechanism also includes a leg support airbag assembly 5, which is located on the side of the leg support support plate 3 facing away from the leg support mounting plate 2.

[0050] The leg support airbag assembly 5 inflates to support the occupant's legs, making the top surface of the leg support more conform to the shape of the legs, and distributing the pressure on the legs more evenly, thus improving comfort.

[0051] Moreover, the leg support airbag assembly 5 can change its firmness by controlling the inflation volume, achieving stepless adjustment from the softest to the firmest, allowing occupants to adjust it arbitrarily within the comfort-support range according to their needs. The adjustment process is smooth, stable, and with low noise.

[0052] In one embodiment, the lifting airbag assembly and the leg support airbag assembly 5 can be inflated by different air sources, so that the inflation amount of the lifting airbag assembly and the leg support airbag assembly 5 can be adjusted independently to separately adjust the lifting height of the lifting airbag assembly and the firmness of the leg support airbag assembly 5, so that the seat leg support mechanism can meet more usage scenarios.

[0053] In one embodiment, the seat leg support mechanism further includes a leg support cover 7 and a leg support foam layer 6. The leg support foam layer 6 is located on top of the leg support air bag assembly 5. The leg support cover 7 is fitted over the leg support foam layer 6. The other side of the cover body 81 is connected to the leg support cover 7. The cover body 81 isolates the leg support air bag assembly 5 from the outside world, protects and conceals the leg support air bag assembly 5, and prevents external damage to the leg support air bag assembly 5.

[0054] In other embodiments, the other side of the cover body 81 can be fixedly connected to the leg support plate 3, so that the cover body 81 is only used to protect the parts between the leg support plate 3 and the leg support mounting plate 2.

[0055] In one embodiment, one side of the leg support plate 3 is rotatably connected to the leg support mounting plate 2 via a pivot. A torsion spring is sleeved on the pivot. One end of the torsion spring is connected to the leg support plate 3, and the other end of the torsion spring is connected to the leg support mounting plate 2, so that the leg support plate 3 can automatically reset using the reset torque provided by the torsion spring.

[0056] In addition, one embodiment of this utility model also provides a seat leg support mechanism, the structure of which is the same as that of the seat leg support mechanism in any of the above embodiments, and will not be described again here.

[0057] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A seat leg support mechanism, characterized in that, It includes a folding cover, a leg support mounting plate, an adjustment mechanism, and a leg support support plate. One side of the leg support support plate is hinged to the leg support mounting plate. The adjustment mechanism is located between the leg support mounting plate and the leg support support plate. The adjustment mechanism is used to drive the leg support support plate to flip between a folded position and an unfolded position relative to the leg support mounting plate. The folding cover includes a cover body, on which multiple folds are provided along the flipping direction of the leg support plate. One side of the cover body is connected to the leg support mounting plate, and the other side of the cover body is fixed relative to the position of the leg support plate. In the folded-back position, the leg support plate is attached to the leg support mounting plate, and the cover body is folded along the crease; when the leg support plate in the folded-back position flips to the unfolded position, the leg support plate drives the cover body to unfold, and an opening is formed between the leg support plate and the leg support mounting plate, and the cover body closes the opening.

2. The seat leg support mechanism according to claim 1, characterized in that, The protective cover body includes a cover end enclosure and two cover side enclosures. The two cover side enclosures are spaced apart along the hinge axis of the leg support plate. The cover end enclosure connects the outer edge of the two cover side enclosures, and the cover end enclosure and the two cover side enclosures form a U-shaped structure.

3. The seat leg support mechanism according to claim 2, characterized in that, The folding cover also includes an upper connecting frame and a lower connecting frame, which are U-shaped. The upper connecting frame is connected to the outer periphery of the cover body near the leg support plate, and the lower connecting frame is connected to the outer periphery of the cover body near the leg support mounting plate. The upper connecting frame is connected to the leg support plate, and the lower connecting frame is connected to the leg support mounting plate.

4. The seat leg support mechanism according to claim 1, characterized in that, The folding shield also includes a frame, which is embedded and fixed at the fold.

5. The seat leg support mechanism according to claim 4, characterized in that, The frame includes an inner support ring and an outer support ring. The multiple creases are divided into inner creases and outer creases. The multiple inner creases and outer creases are arranged alternately along the unfolding direction of the protective cover body. An inner crease is arranged between two adjacent outer creases. The inner crease is located inside the outer crease. The inner layer support ring is provided at the inner layer crease, and the outer layer support ring is provided at the outer layer crease.

6. The seat leg support mechanism according to claim 5, characterized in that, Both the inner and outer support rings are metal wire rings.

7. The seat leg support mechanism according to claim 1, characterized in that, The adjustment mechanism includes a lifting air bag assembly, which is disposed between the leg support plate and the leg support mounting plate. When the leg support plate is in the folded-back position, the lifting air bag assembly is completely deflated and can be inflated to push the leg support plate to flip towards the unfolded position.

8. The seat leg support mechanism according to claim 1, characterized in that, The seat leg support mechanism also includes a leg support airbag assembly, which is disposed on the side of the leg support support plate facing away from the leg support mounting plate.

9. The seat leg support mechanism according to claim 8, characterized in that, It also includes a leg support cover and a leg support foam layer. The leg support foam layer is located on top of the leg support air bag assembly. The leg support cover is fitted over the leg support foam layer. The other side of the protective cover body is connected to the leg support cover. The protective cover body isolates the leg support air bag assembly from the outside world.

10. A type of seat, characterized in that, The system includes a seat frame and a seat leg support mechanism as described in any one of claims 1 to 9, wherein the leg support mounting plate is fixed to the seat frame.

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