Leg support mechanism of automobile seat
The car seat leg support mechanism extends support length with a compact design, addressing the inadequacies of existing leg rests by simplifying structure and reducing costs.
Patent Information
- Application Number
- CN202421248442.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-06-03
AI Technical Summary
Existing car seat leg rests are not long enough, providing inadequate support and comfort, and four-way extended rests require excessive space and have complex structures, which are costly.
A leg support mechanism for a car seat comprising a leg support fixing plate, driving assembly, connecting assembly, and supporting boards, utilizing a series of connecting rods and rods hinged in specific configurations to extend the support length while maintaining a compact design.
The mechanism provides longer leg support in a limited space, enhancing comfort and reducing complexity and cost compared to four-way extensions.
Smart Images
Figure CN222271873U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automobile seat accessories, in particular to a seat leg support. Background Art
[0002] At present, in order to provide a better rest for the legs of users when riding in a car, a retractable or foldable leg rest is provided on the car seat to support the legs of the user. However, the existing two-way leg rest of the car seat is not long enough, and the leg support effect is not ideal, and the comfort level still needs to be improved. The existing four-way extended leg rest supports the entire leg rest by flipping it, which requires a high seat space, has a complex structure, and is costly.
[0003] The technical problem to be solved by this application is: how to design a leg rest mechanism with higher comfort. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the utility model aims to provide a leg support mechanism for a car seat.
[0005] The technical scheme adopted by the utility model is: a kind of leg support mechanism of automobile seat, comprising a leg support fixing plate, a leg support driving assembly, a leg support connecting assembly, a leg support supporting main board and a leg support supporting auxiliary board, the leg support connecting assembly comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first supporting rod and a second supporting rod, one end of the first connecting rod is movably hinged with the leg support fixing plate, and the other end is movably hinged with the fourth connecting rod, one end of the second connecting rod is movably hinged with the leg support fixing plate, and the other end is movably hinged with the third connecting rod, the other end of the third connecting rod is movably hinged with the first supporting rod, the third connecting rod and the first connecting rod are movably hinged in a cross shape, the fourth connecting rod and the first supporting rod are both bent rods, the fourth connecting rod and the first supporting rod are movably hinged at their bent positions, the other end of the fourth connecting rod is movably hinged with the second supporting rod, both ends of the leg support supporting auxiliary board are movably hinged with the first supporting rod and the second supporting rod respectively, and the leg support driving assembly drives the first connecting rod to rotate with the hinge point with the leg support fixing plate as the center of the circle.
[0006] In some embodiments, the first link and the second link are arranged in parallel, and the third link and the fourth link are arranged in parallel.
[0007] In some embodiments, the length of the first connecting rod is greater than the length of the second connecting rod, the overall length of the fourth connecting rod is greater than the length of the third connecting rod, and the length of the first supporting rod is greater than the length of the second supporting rod.
[0008] In some embodiments, leg support fixing plates are respectively provided on both sides of the leg support driving assembly, two groups of leg support connection assemblies are provided and are respectively connected to the corresponding leg support fixing plates, the two first connecting rods are connected by a first cross bar, and the two ends of the first cross bar are respectively connected to the corresponding first connecting rods.
[0009] In some embodiments, the leg support driving assembly includes a driving motor and a driving screw, the fixed end of the driving motor is rotationally connected to the driving seat, the output end is threadedly connected to the driving screw, and the driving seat is fixedly connected to the leg support fixing plate.
[0010] In some embodiments, a connecting piece is provided at one end of the driving screw rod close to the leg support connecting assembly, one end of the connecting piece is rotatably connected to the driving screw rod, and the other end of the connecting piece is sleeved on the first cross bar.
[0011] The beneficial effects of the utility model are:
[0012] The leg support mechanism of the automobile seat is provided with a leg support main board and a leg support sub-board which can be assembled, and combines the driving extension of the leg support driving assembly and the leg support connecting assembly. The leg support of the entire leg support mechanism is longer in a limited space, thereby improving the comfort of the seat for the legs of the human body. In the same two-way leg drag height space, after the leg support of the present application is unfolded, the support length for the legs of the human body is longer and the comfort is better. Compared with the four-way leg support mechanism, the leg support mechanism of the present application is simpler in structure, has lower process requirements and more obvious cost advantages. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of Example 1;
[0014] Figure 2 This is a schematic diagram of the folded state of the structure of Example 1;
[0015] Figure 3 It is a schematic diagram of the structure of Example 1 in an expanded state;
[0016] The numbers and names in the figure correspond to each other as follows: 1. Leg rest fixing plate; 2. Leg rest driving assembly; 3. Leg rest connecting assembly; 4. Leg rest supporting main board; 5. Leg rest supporting sub-board; 11. Driving seat; 21. Driving motor; 22. Driving screw; 31. First connecting rod; 32. Second connecting rod; 33. Third connecting rod; 34. Fourth connecting rod; 35. First support rod; 36. Second support rod; 37. First cross bar; 38. Second cross bar. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0018] See also Figure 1-3The utility model provides a technical solution: an embodiment, including a leg rest fixing plate 1, a leg rest driving assembly 2, a leg rest connecting assembly 3, a leg rest supporting main board 4 and a leg rest supporting sub-board 5, the leg rest driving assembly 2 is arranged between two leg rest fixing plates 1, the leg rest fixing plates 1 are fixedly connected to the seat frame, a driving seat 11 fixedly connected to the leg rest fixing plates 1 is provided between the two leg rest fixing plates 1, the leg rest driving assembly 2 includes a driving motor 21 and a driving screw 22, the fixed end of the driving motor 21 is connected to the driving seat 11 for limited rotation, and the output end is threadedly connected to the driving screw 22.
[0019] The leg support connecting assembly 3 includes a first connecting rod 31, a second connecting rod 32, a third connecting rod 33, a fourth connecting rod 34, a first supporting rod 35 and a second supporting rod 36. The first connecting rod 31 and the second connecting rod 32 are arranged in parallel, and the third connecting rod 33 and the fourth connecting rod 34 are arranged in parallel. The leg support main board 4 is fixedly arranged on the side of the first supporting rod 35 away from the driving motor 21. The leg support supporting sub-board 5 is arranged at one end of the second supporting rod 36, and one end of the leg support supporting sub-board 5 is movably hinged to one end of the second supporting rod 36, and the other end is movably hinged to the first supporting rod 35.
[0020] One end of the first connecting rod 31 is movably hinged to the leg support fixing plate 1, and the other end is movably hinged to the fourth connecting rod 34. One end of the second connecting rod 32 is movably hinged to the leg support fixing plate 1, and the other end is movably hinged to the third connecting rod 33. One end of the third connecting rod 33 is movably hinged to the second connecting rod 32, and the other end is movably hinged to the first support rod 35. The third connecting rod 33 is movably hinged to the first connecting rod 31 in a cross shape. The fourth connecting rod 34 and the first support rod 35 are both bent rods. The fourth connecting rod 34 and the first support rod 35 are The support rod 35 is movably hinged at the bending position of the two, one end of the fourth connecting rod 34 is movably hinged to the first connecting rod 31, and the other end is movably hinged to the second supporting rod 36, one end of the first supporting rod 35 is movably hinged to the third connecting rod 33, and the other end is movably hinged to the leg support sub-plate 5, one end of the second supporting rod 36 is movably hinged to the fourth connecting rod 34, and the other end is movably hinged to the leg support sub-plate 5, and both ends of the leg support sub-plate 5 are movably hinged to the first supporting rod 35 and the second supporting rod 36 respectively.
[0021] The length of the first connecting rod 31 is greater than that of the second connecting rod 32, the overall length of the fourth connecting rod 34 is greater than that of the third connecting rod 33, and the length of the first supporting rod 35 is greater than that of the second supporting rod 36. Since the leg support supporting sub-plate 5 is driven by the first connecting rod 31, the fourth connecting rod 34, the first supporting rod 35 and the second supporting rod 36, the leg support supporting sub-plate 5 extends farther than the leg support supporting main plate 4. The cooperation of the first connecting rod 31, the second connecting rod 32, the third connecting rod 33 and the fourth connecting rod 34 can make the first supporting rod 35 and the second supporting rod 36 extend away from the driving motor 21 and convert the direction of the leg support supporting main plate 4 and the second supporting rod 36. The leg support supporting foam includes a main leg support foam and a secondary leg support foam, the leg support supporting main plate 4 is fixedly connected to the main leg support foam by a plastic part, the leg support supporting sub-plate 5 is fixedly connected to the secondary leg support foam by a plastic part, the main leg support foam and the secondary leg support foam are connected to the seat foam, and the connection method between the support plate and the leg support foam is the existing technology, not the improved structure of the present application.
[0022] The leg support connection assembly 3 is provided with two groups and is respectively connected to the corresponding leg support fixing plate 1. The two first connecting rods 31 are connected by the first cross bar 37. The two ends of the first cross bar 37 are respectively connected to the corresponding first connecting rods 31. The connection point between the first connecting rod 31 and the first cross bar 37 is set between the connection point between the first connecting rod 31 and the fixing member and the connection point between the first connecting rod 31 and the third connecting rod 33, and the connection point between the first connecting rod 31 and the first cross bar 37 is closer to the fixing member. A connecting piece is provided at one end of the driving screw 22 close to the leg support connection assembly 3. One end of the connecting piece is rotatably connected to the driving screw 22, and the other end is sleeved on the first cross bar 37. The first cross bar 37 is set so that the two first connecting rods 31 can move synchronously. The two fourth links 34 are connected by a second cross bar 38, and both ends of the second cross bar 38 are respectively connected to the corresponding fourth links 34. The connection point between the second cross bar 38 and the fourth link 34 is set between the connection point between the fourth link 34 and the first support rod 35 and the connection point between the fourth link 34 and the first link 31, and the connection point between the second cross bar 38 and the fourth link 34 is closer to the first support rod 35. The second cross bar 38 is set so that the two fourth links 34 can move synchronously.
[0023] The working principle and use process of the utility model are as follows: the initial position is the folded state, the drive motor 21 outputs, the drive screw 22 pushes the first cross bar 37 to move, the first connecting rod 31 moves with the first cross bar 37, the first connecting rod 31 rotates with the movable hinge point with the leg support fixing plate 1 as the center of the circle, the third connecting rod 33 and the fourth connecting rod 34 extend with the first connecting rod 31, the second connecting rod 32 extends with the third connecting rod 33, the first support rod 35 extends with the third connecting rod 33 and the fourth connecting rod 34, the second support rod 36 extends with the fourth connecting rod 34, at this time, the leg support main board 4 and the leg support sub-board 5 surfaces face the same direction, thereby realizing the splicing of the main leg support foam and the sub-leg support foam.
[0024] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A car seat leg support mechanism, characterized in that: The leg support assembly comprises a leg support fixing plate (1), a leg support driving assembly (2), a leg support connecting assembly (3), a leg support supporting main board (4) and a leg support supporting auxiliary board (5), wherein the leg support connecting assembly (3) comprises a first connecting rod (31), a second connecting rod (32), a third connecting rod (33), a fourth connecting rod (34), a first supporting rod (35) and a second supporting rod (36), wherein one end of the first connecting rod (31) is movably hinged to the leg support fixing plate (1) and the other end is movably hinged to the fourth connecting rod (34), one end of the second connecting rod (32) is movably hinged to the leg support fixing plate (1) and the other end is movably hinged to the third connecting rod (33), and the other end of the third connecting rod (34) is movably hinged to the third connecting rod (33). The first end of the leg support support sub-plate (5) is movably hinged to the first support rod (35), the third connecting rod (33) is movably hinged to the first connecting rod (31) in a cross shape, the fourth connecting rod (34) and the first support rod (35) are both bent rods, the fourth connecting rod (34) and the first support rod (35) are movably hinged at their bent positions, the other end of the fourth connecting rod (34) is movably hinged to the second support rod (36), the two ends of the leg support support sub-plate (5) are respectively movably hinged to the first support rod (35) and the second support rod (36), and the leg support drive assembly (2) drives the first connecting rod (31) to rotate with the hinge point with the leg support fixing plate (1) as the center of the circle.
2. The vehicle seat leg support mechanism according to claim 1, characterized in that: The first connecting rod (31) and the second connecting rod (32) are arranged in parallel, and the third connecting rod (33) and the fourth connecting rod (34) are arranged in parallel.
3. The vehicle seat leg support mechanism according to claim 1, characterized in that: The length of the first connecting rod (31) is greater than that of the second connecting rod (32), the overall length of the fourth connecting rod (34) is greater than that of the third connecting rod (33), and the length of the first supporting rod (35) is greater than that of the second supporting rod (36).
4. The vehicle seat leg support mechanism according to claim 1, characterized in that: The leg support driving assembly (2) is provided with a leg support fixing plate (1) on both sides, and the leg support connecting assembly (3) is provided with two groups and is respectively connected to the corresponding leg support fixing plates (1), and the two first connecting rods (31) are connected by a first cross bar (37), and the two ends of the first cross bar (37) are respectively connected to the corresponding first connecting rods (31).
5. The vehicle seat leg support mechanism according to claim 4, characterized in that: The leg support driving assembly (2) comprises a driving motor (21) and a driving screw (22); the fixed end of the driving motor (21) is connected to the driving seat (11) for limited rotation, and the output end is threadedly connected to the driving screw (22); the driving seat (11) is fixedly connected to the leg support fixing plate (1).
6. The vehicle seat leg support mechanism according to claim 5, characterized in that: A connecting piece is provided at one end of the driving screw rod (22) close to the leg support connecting assembly (3), one end of the connecting piece is rotatably connected to the driving screw rod (22), and the other end is sleeved on the first cross bar (37).