Leg support device for automobile seat

Abstract

The invention relates to a leg support device for an automobile seat. The device has the advantage of improving the comfort level of legs of passengers, and comprises two fixed supports, the two fixed supports are fixedly connected through a mounting plate, a driving assembly is fixed to the lower portion of the mounting plate, a connecting rod assembly is hinged to the two fixed supports, and the connecting rod assembly is driven by the driving assembly to be unfolded. The end, away from the support, of the connecting rod assembly is provided with a leg supporting assembly, and the leg supporting assembly is provided with a massage assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive seat leg rests, and particularly relates to a leg rest device for automotive seats. Background Art

[0002] An automotive seat leg rest is a device installed at the front end of an automotive seat frame for supporting the lower legs of an occupant. Its function is to provide additional support and comfort for the occupant's legs, enabling the occupant's legs to obtain better support and reducing the fatigue of the lower limbs.

[0003] With the progress of technology, people's requirements for the comfort of automotive seats are also constantly increasing. Therefore, some seats have added a leg massage function, that is, a massage mechanism is provided on the surface of the leg rest to relieve the fatigue of the occupant's legs and increase the comfort. In the prior art, the massage function on the leg rest usually only has a poor massage effect. Therefore, a leg rest device for automotive seats is designed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a leg rest device for automotive seats that can improve the comfort of the occupant's legs.

[0005] The technical solution of the present invention is as follows:

[0006] A leg rest device for automotive seats includes two fixed supports, which are fixedly connected by a mounting plate. A driving component is fixed to the lower part of the mounting plate. A link component is hinged to the two fixed supports, and the link component is driven to unfold by the driving component. A leg rest component is installed at the end of the link component away from the support, and a massage component is provided on the leg rest component.

[0007] Further, the driving component includes a lead screw motor fixed to the lower part of the mounting plate, and the output end of the lead screw motor is hinged to a connecting piece, and the connecting piece is fixed to the link component.

[0008] Further, the link component includes two first links hinged to the upper left sides of the two fixed supports. A first fixing rod is fixed between the two first links, and the hinge piece is fixed to the surface of the first fixing rod. Two second links are hinged to the lower left sides of the two fixed supports respectively. The left parts of the two second links are respectively hinged to third links. The middle parts of the two third links are respectively hinged to the middle parts of the two first links. The left parts of the two first links are respectively hinged to fourth links. The left parts of the two fourth links are respectively hinged to the lower part of the leg rest component. The left parts of the two third links are respectively hinged to the right part of the leg rest component. The left parts of the two fourth links are respectively hinged to fifth links. The left parts of the two fifth links are respectively hinged to the lower part of the leg rest component.

[0009] Further, the leg support assembly includes a first support plate hinged to the front side of the third link. The front and rear sides of the lower part of the first support plate are respectively hinged to two fourth links. The left part of the first support plate is hinged to a second support plate. The front and rear sides of the lower part of the second support plate are respectively hinged to two fifth links. The massage assembly is installed on the first support plate and the second support plate.

[0010] Further, the massage assembly includes a first motor fixed to the right side surface of the first support plate. Reciprocating lead screws are arranged on the lower sides of both the first support plate and the second support plate. The two reciprocating lead screws are connected by a universal joint. The two reciprocating lead screws are respectively rotatably connected to the lower side surfaces of the first support plate and the second support plate. Among them, the reciprocating lead screw located on the first support plate is fixed to the output end of the first motor. Hammering assemblies are threadedly connected to both of the reciprocating lead screws. Matching plates are fixed to the middle parts of both the first support plate and the second support plate. The two hammering assemblies are respectively slidably connected to the lower side surfaces of the two matching plates.

[0011] Further, the hammering assembly includes a driving plate threadedly connected to the reciprocating lead screw. Two connecting plates are arranged on both the front and rear sides of the driving plate. A plurality of rotating rollers are rotatably connected between every two of the connecting plates. A hammering plate is fixed to the middle part of each rotating roller. Hammering cylinders are fixed to the left and right parts of each hammering plate. Springs are arranged in each hammering cylinder. A hammering block is slidably connected to the upper part of each hammering cylinder. The upper end of the spring is fixedly connected to the bottom of the hammering block. The lower end of the spring is fixedly connected to the inner wall of the hammering cylinder. The front and rear ends of each rotating roller penetrate through the two connecting plates and gears are fixed to both the front and rear ends. Upper rail plates and lower rail plates are arranged on one side of each connecting plate where the gear is installed. Multiple sections of rack teeth are fixed to the adjacent sides of the upper rail plates and the lower rail plates. The rack teeth are meshed with the gears. The upper rail plates and the lower rail plates are both fixed to the support plate assembly.

[0012] Further, the connecting plates located in the middle parts of the first support plate and the second support plate are respectively fixed to the two driving plates. The connecting plates located on the front and rear sides of the first support plate and the second support plate are respectively fixedly connected to the two driving plates through long plates. The upper rail plates and the lower rail plates of the hammering assembly located on the first support plate are both fixed to the lower part of the first support plate. The upper rail plates and the lower rail plates of the hammering assembly located on the second support plate are both fixed to the lower part of the second support plate.

[0013] Further, the rack teeth on the upper rail plates and the lower rail plates are arranged in an alternating and equidistant manner.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The present invention can deploy the leg rest assembly through the mutual cooperation of the driving assembly, the link assembly and the leg rest assembly. The designs of the leg rest assembly and the link assembly can increase the support area for the occupant's legs and better support the occupant's legs.

[0016] 2. The present invention can massage the occupant's legs through the massage assembly, improving the comfort of the occupant.

[0017] In summary, the present invention has the advantage of improving the comfort of the occupant's legs. Brief Description of the Drawings

[0018] Figure 1 is a three-dimensional schematic diagram of the structure of the present invention;

[0019] Figure 2 is a front view schematic diagram of the structure of the present invention;

[0020] Figure 3 is a schematic diagram of the position of the universal joint of the present invention;

[0021] Figure 4 is an enlarged schematic diagram of the pounding assembly in the present invention.

[0022] In the figure, 1. Fixed support; 2. Mounting plate; 3. Lead screw motor; 4. Connecting piece; 5. First link; 6. First fixed rod; 7. Second link; 8. Third link; 9. Fourth link; 10. Fifth link; 11. First support plate; 12. Second support plate; 13. First motor; 14. Reciprocating lead screw; 15. Universal joint; 16. Fitting plate; 17. Driving plate; 18. Connecting plate; 19. Roller; 20. Pounding plate; 21. Pounding cylinder; 22. Spring; 23. Pounding block; 24. Gear; 25. Upper rail plate; 26. Lower rail plate; 27. Rack; 28. Long plate. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figures 1 to 4 shown, a leg rest device for an automobile seat includes two fixed supports 1, which are fixedly connected by a mounting plate 2 between the two fixed supports 1. A driving assembly is fixed to the lower part of the mounting plate 2. A link assembly is hinged on the two fixed supports 1, and the link assembly is driven to unfold by the driving assembly. A leg rest assembly is installed at the end of the link assembly away from the support, and a massage assembly is provided on the leg rest assembly;

[0025] The driving component is used to drive the link component to unfold, and the link component drives the leg support component to unfold. After the leg support component is unfolded, the massage component can be controlled to operate to massage the legs placed on the massage component.

[0026] In this embodiment, the driving component includes a lead screw motor 3 fixed to the lower part of the mounting plate 2. The output end of the lead screw motor 3 is hinged with a connecting piece 4, and the connecting piece 4 is fixed to the link component.

[0027] Preferably, the link component includes two first links 5 hinged to the upper left sides of two fixed supports 1. A first fixing rod 6 is fixed between the two first links 5. The hinge piece is fixed to the surface of the first fixing rod 6. The lower left sides of the two fixed supports 1 are respectively hinged with second links 7. The left parts of the two second links 7 are respectively hinged with third links 8. The middle parts of the two third links 8 are respectively hinged with the middle parts of the two first links 5. The left parts of the two first links 5 are respectively hinged with fourth links 9. The left parts of the two fourth links 9 are respectively hinged to the lower part of the leg support component. The left parts of the two third links 8 are respectively hinged to the right part of the leg support component. The left parts of the two fourth links 9 are respectively hinged with fifth links 10. The left parts of the two fifth links 10 are respectively hinged to the lower part of the leg support component.

[0028] In this embodiment, the leg support component includes a first support plate 11 hinged to the front side of the third link 8. The front and rear sides of the lower part of the first support plate 11 are respectively hinged with the two fourth links 9. The left part of the first support plate 11 is hinged with a second support plate 12. The front and rear sides of the lower part of the second support plate 12 are respectively hinged with the two fifth links 10. The massage component is installed on the first support plate 11 and the second support plate 12.

[0029] The operation of the lead screw motor 3 drives the connecting piece 4 to move. The connecting piece 4 pushes the first fixing rod 6 to move. The first fixing rod 6 drives the two first links 5 to rotate around the connecting shaft with the fixed support 1. The rotation of the first link 5 drives the third link 8 and the fourth link 9 to move. The third link 8 drives the second link 7 to rotate. While the third link 8 and the fourth link 9 are moving, they push the first support plate 11 to unfold. While the fourth link 9 and the first support plate 11 are moving together, they can push the fifth link 10 to rotate, so that the fifth link 10 drives the second support plate 12 to unfold. When the connecting piece 4 moves to the maximum distance, the link component is completely unfolded, and the first support plate 11 and the second support plate 12 are also completely unfolded. At this time, the upper sides of the first support plate 11 and the second support plate 12 are parallel and located on the same horizontal plane.

[0030] In this embodiment, the massage component includes a first motor 13 fixed to the right side surface of the first support plate 11. Reciprocating lead screws 14 are provided on the lower sides of both the first support plate 11 and the second support plate 12. The two reciprocating lead screws 14 are connected by a universal joint 15. The two reciprocating lead screws 14 are respectively rotatably connected to the lower side surfaces of the first support plate 11 and the second support plate 12. Among them, the reciprocating lead screw 14 located on the first support plate 11 is fixed to the output end of the first motor 13. Hammering components are threadedly connected to both of the two reciprocating lead screws 14. Matching plates 16 are fixed in the middle of both the first support plate 11 and the second support plate 12. The two hammering components are respectively slidably connected to the lower side surfaces of the two matching plates 16;

[0031] The rotation axis of the universal joint 15 is concentric with the connection axis between the second support plate 12 and the first support plate 11. When the second support plate 12 rotates around the connection axis with the first support plate 11, the universal joint 15 also rotates accordingly. Through the universal joint 15, the two reciprocating lead screws 14 can be kept connected together.

[0032] In this embodiment, the hammering component includes a driving plate 17 threadedly connected to the reciprocating lead screw 14. Two connecting plates 18 are provided on both the front and rear sides of the driving plate 17. A plurality of rollers 19 are rotatably connected between every two connecting plates 18. A hammering plate 20 is fixed in the middle of each roller 19. Hammering cylinders 21 are fixed to both the left and right parts of each hammering plate 20. Springs 22 are arranged in each hammering cylinder 21. Hammering blocks 23 are slidably connected to the upper parts of each hammering cylinder 21. The upper end of the spring 22 is fixedly connected to the bottom of the hammering block 23, and the lower end of the spring 22 is fixedly connected to the inner wall of the hammering cylinder 21. The front and rear ends of each roller 19 penetrate through the two connecting plates 18 and gears 24 are fixed to both the front and rear ends. A upper rail plate 25 and a lower rail plate 26 are provided on one side of each connecting plate 18 where the gear 24 is installed. Multiple racks 27 are fixed to the closer sides of the upper rail plate 25 and the lower rail plate 26. The racks 27 are meshed with the gears 24. The upper rail plate 25 and the lower rail plate 26 are both fixed to the support plate assembly;

[0033] When the first motor 13 operates, it drives the reciprocating lead screw 14 on the first support plate 11 to rotate. The reciprocating lead screw 14 on the first support plate 11 drives the reciprocating lead screw 14 on the second support plate 12 to rotate through the universal joint 15. The two reciprocating lead screws 14 rotate to drive the two driving plates 17 to move reciprocally. While the two driving plates 17 move, they drive a plurality of rollers 19 to move. The plurality of rollers 19 drive the gears 24 to move. During the movement of the gears 24, they will rotate in cooperation with the racks 27. Subsequently, the gears 24 drive the rollers 19 to rotate. The rollers 19 drive the hammering plates 20 to rotate. The hammering plates 20 drive the hammering cylinders 21 and the hammering blocks 23 to rotate. The left and right two hammering blocks 23 located on the hammering plate 20 will alternately strike the legs. Through the spring 22, the hammering blocks 23 can move towards the spring 22 direction when striking the legs.

[0034] In this embodiment, the connecting plates 18 in the middle of the first support plate 11 and the second support plate 12 are respectively fixed to the two driving plates 17. The connecting plates 18 on the front and rear sides of the first support plate 11 and the second support plate 12 are respectively fixedly connected to the two driving plates 17 through the long plates 28. The upper rail plate 25 and the lower rail plate 26 of the hammering assembly on the first support plate 11 are both fixed to the lower part of the first support plate 11. The upper rail plate 25 and the lower rail plate 26 of the hammering assembly on the second support plate 12 are both fixed to the lower part of the second support plate 12.

[0035] In this embodiment, the racks 27 on the upper rail plate 25 and the lower rail plate 26 are arranged alternately at equal intervals.

[0036] When the gear 24 engages with the rack 27 on the upper rail plate 25, it rotates in reverse. When the gear 24 engages with the rack 27 on the lower rail plate 26, it rotates forward, enabling the hammering plate 20 to flip back and forth. Moreover, each section of the rack 27 can only drive the hammering plate 20 to rotate 45 degrees. The interval between two adjacent racks 27 on the upper rail plate 25 is equal to the length of the rack 27 on the lower rail plate 26 directly below, causing the gear 24 to continuously engage with the rack 27, so that the hammering block 23 continuously hammers the leg while moving, massaging the leg.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A leg rest device for an automotive seat, characterized in that: It includes two fixed supports, which are fixedly connected by a mounting plate between the two fixed supports. A driving component is fixed to the lower part of the mounting plate. A connecting rod component is hinged on the two fixed supports, and the connecting rod component is driven to unfold by the driving component. A leg rest component is installed at the end of the connecting rod component away from the support, and a massage component is arranged on the leg rest component.

2. The leg rest device for a vehicle seat according to claim 1, characterized in that: The driving component includes a lead screw motor fixed to the lower part of the mounting plate. The output end of the lead screw motor is hinged with a connecting piece, and the connecting piece is fixed on the connecting rod component.

3. The leg rest device for a vehicle seat according to claim 1, characterized in that: The leg rest component includes a first support plate hinged to the front side of the connecting rod component. Both the front and rear sides of the lower part of the first support plate are hinged to the connecting rod component. The left part of the first support plate is hinged with a second support plate. Both the front and rear sides of the lower part of the second support plate are hinged to the connecting rod component. The massage component is installed on the first support plate and the second support plate.

4. A leg rest device for an automotive seat according to claim 1, characterized in that: The massage component includes a first motor fixed to the right side surface of the first support plate. Reciprocating lead screws are arranged on the lower sides of both the first support plate and the second support plate. The two reciprocating lead screws are connected by a universal joint. The two reciprocating lead screws are respectively rotatably connected to the lower side surfaces of the first support plate and the second support plate. The reciprocating lead screw located on the first support plate is fixed to the output end of the first motor. Hammering components are threadedly connected to both the reciprocating lead screws. Matching plates are fixed to the middle parts of both the first support plate and the second support plate. The two hammering components are respectively slidably connected to the lower side surfaces of the two matching plates.

5. The leg rest device for a vehicle seat according to claim 1, characterized in that: The hammering component includes a driving plate threadedly connected to the reciprocating lead screw. Two connecting plates are arranged on both the front and rear sides of the driving plate. A plurality of rollers are rotatably connected between every two connecting plates. A hammering plate is fixed to the middle part of each roller. Hammering cylinders are fixed to both the left and right parts of each hammering plate. Springs are arranged in each hammering cylinder. A hammering block is slidably connected to the upper part of each hammering cylinder. The upper end of the spring is fixedly connected to the bottom of the hammering block, and the lower end of the spring is fixedly connected to the inner wall of the hammering cylinder. The front and rear ends of each roller penetrate through the two connecting plates and are fixedly connected with gears at both the front and rear ends. A upper rail plate and a lower rail plate are arranged on one side of each connecting plate where the gear is installed. Multiple racks are fixed to the adjacent sides of the upper rail plate and the lower rail plate. The racks are meshed with the gears. The upper rail plate and the lower rail plate are both fixed to the support plate component.

6. The leg rest device for a vehicle seat according to claim 1, characterized in that: The connecting plates located in the middle parts of the first support plate and the second support plate are respectively fixed to the two driving plates. The connecting plates located on the front and rear sides of the first support plate and the second support plate are respectively fixed to the two driving plates through long plates. The upper rail plate and the lower rail plate of the hammering component located on the first support plate are both fixed to the lower part of the first support plate. The upper rail plate and the lower rail plate of the hammering component located on the second support plate are both fixed to the lower part of the second support plate.

7. The leg rest device for a vehicle seat according to claim 1, characterized in that: The racks located on the upper rail plate and the lower rail plate are arranged alternately and equidistantly.

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