Single-motor four-way leg support structure

Abstract

The utility model discloses a single-motor four-way leg support structure, which comprises a driving motor, a leg support, a leg support and a leg support, the motor base is assembled with the fixed part of the driving motor; the first leg supporting mechanism is rotationally connected with the moving part; one end of the linkage arm is rotationally connected with the motor base, and the other end of the linkage arm is rotationally connected with one end, close to the fixed part, of the first leg support mechanism; one end of the rotating arm is rotationally connected with the motor base, and the other end of the rotating arm is rotationally connected with the first leg supporting mechanism. According to the single-motor four-way leg support structure, one motor is omitted, so that the overall structure is simplified. Complex double motors and connecting rod mechanisms are omitted, the weight and the manufacturing cost of the product can be expected to be reduced, the maintenance complexity is reduced, the reliability of the product can be improved, and the service life of the product can be prolonged. Due to the fact that the single-motor four-way leg support is relatively simple in structure, adjustment and adaptation can be conducted more easily according to bottom structures and installation spaces of different seats.

Description

TECHNICAL FIELD

[0001] The utility model relates to sofa technical field especially relates to a single motor four -way leg support structure. BACKGROUND

[0002] At present, most of the four -way leg supports on the market adopt double -motor drive, and realize four -way adjustment function through complex connecting rod mechanism. Although this structure meets the demand of users to leg support multidirectional adjustment to some extent, there are many deficiencies.

[0003] Firstly, the structure of double -motor four -way leg support is relatively complex, contains multiple connecting rods, gear and other transmission components, which not only increases the weight of product, but also improves the manufacturing cost. Complex structure can also lead to increased maintenance difficulty, reduces the reliability and service life of product.

[0004] Secondly, the adaptability of double -motor four -way leg support is poor, and it is difficult to realize wide application on different styles of seats. The bottom structure and installation space of different seats are different, and the structure of double -motor four -way leg support is relatively fixed, and it is difficult to flexibly adapt to these changes. This limits the popularization and application range of four -way leg support in the market. INVENTION CONTENTS

[0005] In order to overcome at least one of the defects of the prior art described above, the utility model provides a single motor four -way leg support structure. Can solve.

[0006] The technical scheme adopted by the utility model to solve the problem is:

[0007] A single motor four -way leg support structure, comprising: drive motor, the drive motor includes mobile part and fixed part;Motor seat, the motor seat is assembled with the fixed part of drive motor;First leg support mechanism, one end of the first leg support mechanism is rotatably connected with the mobile part;Linkage arm, one end of the linkage arm is rotatably connected with the motor seat, and the other end is rotatably connected with the one end close to the fixed part of the first leg support mechanism;Rotary arm, one end of the rotary arm is rotatably connected with the motor seat, and the other end is rotatably connected with the first leg support mechanism;Wherein, the mobile part displacement drives the first leg support mechanism to rotate along the other end of the rotary arm as the shaft, so that the first leg support mechanism and the mobile part are switched between the two states of folding and opening.

[0008] By adopting the above scheme, the single-motor four-way leg support structure simplifies the overall structure by reducing one motor. Without the complex double-motor and linkage mechanism, the weight and manufacturing cost of the product can be expected to be reduced, the maintenance complexity is reduced, and the reliability and service life of the product are improved. Since the single-motor four-way leg support structure is relatively simple, it is easier to adjust and adapt to different seat bottom structures and installation spaces, which helps to expand the application range of the four-way leg support on different styles of seats, thereby increasing the market acceptance and promotion potential.

[0009] Further, a second leg support mechanism is provided, and a telescopic mechanism is arranged between the first leg support mechanism and the second leg support mechanism. When the driving motor drives the first leg support mechanism to fold, the telescopic mechanism is retracted to make the second leg support mechanism coincide with the first leg support mechanism. When the driving motor drives the first leg support mechanism to open, the telescopic mechanism is extended to make the second leg support mechanism extend in a direction away from the driving motor and parallel to the first leg support mechanism.

[0010] By adopting the above scheme, the addition of the second leg support mechanism enables the leg support structure to more comprehensively support the user's legs and provide a wider and more comfortable support area. The telescopic mechanism design allows the second leg support mechanism to extend or retract according to the user's needs, thereby adapting to users of different heights and sitting postures, further improving the comfort of use. When the driving motor drives the first leg support mechanism to fold, the telescopic mechanism is retracted, making the second leg support mechanism coincide with the first leg support mechanism, greatly saving storage space.

[0011] Further, the motor seat is connected with a rotating mechanism near one end of the first leg support mechanism, and the rotating mechanism comprises a first support rod, a middle part of the first support rod is connected with the motor seat, and an assembly part is assembled at both ends of the first support rod. The assembly part comprises a first connecting hole and a second connecting hole, the first connecting hole is used for rotating connection with one end of the linkage arm, and the second connecting hole is used for rotating connection with one end of the rotating arm.

[0012] By adopting the above scheme, the first leg support mechanism is allowed to rotate and adjust in a wider range. Through the connection of the first support rod and the assembly part, the linkage arm and the rotating arm can more flexibly respond to the action of the driving motor, thereby realizing four-way adjustment of the leg support.

[0013] Further, the first leg support mechanism comprises: a first side rod, one end of the first side rod being rotatably connected with one of the linkage arms; a second side rod, one end of the second side rod being rotatably connected with one of the linkage arms; a first connecting cross rod, the first connecting cross rod being rotatably connected between one end of the first side rod and one end of the second side rod, and a middle part of the first connecting cross rod being rotatably connected with the moving part; and a second connecting cross rod, the second connecting cross rod being assembled between the first side rod and the second side rod.

[0014] By adopting the above scheme, the first side rod and the second side rod are connected with the motor base through the linkage arms, and meanwhile, they are reinforced through the first connecting cross rod and the second connecting cross rod, forming a stable quadrilateral structure. This design effectively disperses the stress of the leg support during use, improving the overall stability of the structure. When the driving motor acts, it can directly and efficiently transmit power to the first leg support mechanism. This design reduces energy loss in the transmission process, improving transmission efficiency.

[0015] Further, the second leg support mechanism comprises: a third side rod, the third side rod having a first sliding groove accommodating the first side rod, so that the third side rod slides along the length direction of the first side rod; a fourth side rod, the fourth side rod having a second sliding groove accommodating the second side rod, so that the fourth side rod slides along the length direction of the second side rod, the third side rod and the fourth side rod being symmetrically arranged; a third connecting cross rod, the third connecting cross rod being assembled between the third side rod and the fourth side rod; and a fourth connecting cross rod, the fourth connecting cross rod being assembled between the third side rod and the fourth side rod.

[0016] By adopting the above scheme, the third side rod and the fourth side rod are connected with the first side rod and the second side rod through the sliding grooves, forming a stable sliding support structure. This design not only enhances the overall stability of the leg support, but also improves the support force on the user's leg; when the second leg support mechanism needs to be retracted, the third side rod and the fourth side rod can slide along the length direction of the first side rod and the second side rod, so that the second leg support mechanism closely fits with the first leg support mechanism, greatly saving the storage space.

[0017] Further, rollers are arranged between the first side rod and the first sliding groove, and between the second side rod and the second sliding groove.

[0018] By adopting the above scheme, the design of the roller greatly reduces the direct friction between the first side rod and the first sliding groove, and the second side rod and the second sliding groove. This friction-reducing effect not only prolongs the service life of the leg support mechanism, but also reduces noise and improves user experience. The roller enables the first side rod and the second side rod to slide more smoothly in the sliding grooves. This design enables users to experience a smoother operation experience when adjusting the length and position of the leg support.

[0019] Further, the first support rod is also connected with a first support arm and a second support arm extending towards the first leg support mechanism, and a turnover linkage is hinged between the first support arm and the second support arm, and the turnover linkage is rotationally connected with the telescopic mechanism.

[0020] By adopting the above scheme, the first support arm and the second support arm, as important components connecting the first support rod and the leg support mechanism, are connected with the telescopic mechanism through the hinged turnover linkage, forming a stable support structure. This design not only enhances the stability of the leg support mechanism, but also improves its carrying capacity. The rotational connection design of the turnover linkage and the telescopic mechanism enables the power of the driving motor to be more efficiently transmitted to the leg support mechanism. This design reduces energy loss during transmission and improves transmission efficiency.

[0021] Further, the telescopic mechanism comprises a first telescopic arm, one end of the first telescopic arm being rotationally connected with the turnover linkage; a second telescopic arm, one end of the second telescopic arm being rotationally connected with the second leg support mechanism; a third telescopic arm, one end of the third telescopic arm being rotationally connected with the other end of the second telescopic arm, and the other end being rotationally connected with the first leg support mechanism, and the middle part of the third telescopic arm being rotationally connected with the other end of the first telescopic arm.

[0022] By adopting the above scheme, the design of the telescopic mechanism enables the power of the driving motor to be more efficiently transmitted to the leg support mechanism. Through the rotational connection of each telescopic arm, the power can be smoothly transmitted to complete the extension and folding effect of the telescopic mechanism, reducing energy loss during transmission and improving transmission efficiency.

[0023] Further, the middle part of the second telescopic arm is arched away from the side of the third telescopic arm to form a first avoidance space for reserving movement space for the third telescopic arm.

[0024] By adopting the above scheme, the first avoidance space provides sufficient movement space for the third telescopic arm, ensuring that it does not interfere with the second telescopic arm during extension and rotation. This design makes the adjustment of the leg support mechanism more flexible and smooth. Sufficient movement space can be reserved for the third telescopic arm without increasing the overall size. This design makes the structure of the leg support mechanism more compact, saving space.

[0025] Further, the second connecting crossbar is at least partially arched away from one side of the telescopic mechanism to form a second avoiding space for reserving movement space for the first and third telescopic arms of the telescopic mechanism.

[0026] By adopting the above scheme, the second avoiding space provides a larger movement range for the first and third telescopic arms in the telescopic mechanism. This design ensures that the telescopic mechanism can be more smooth and flexible when adjusting the angle and position of the leg rest, and will not be hindered by the second connecting crossbar.

[0027] In summary, the single-motor four-direction leg rest structure provided by the present application has the following technical effects:

[0028] 1. By adopting a single-motor design, the leg rest structure significantly simplifies the complex linkage mechanism of the traditional double-motor four-direction leg rest. This not only reduces the number of transmission components, but also reduces the overall weight and manufacturing cost of the product;

[0029] 2. The simplified structure means that the potential failure points are reduced, thereby improving the reliability of the product. At the same time, the wear of complex mechanical components is reduced, which helps to prolong the service life of the product;

[0030] 3. The single-motor four-direction leg rest structure is relatively simple and flexible, and is more easily adjusted and adapted according to the bottom structure and installation space of different seats. This helps to expand the application range of the leg rest structure on different styles of seats, increase its market acceptance and promotion potential. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structure schematic diagram of a flip-folding state of an embodiment of the present application;

[0032] Figure 2 is a structure schematic diagram of a flip-opening state of an embodiment of the present application;

[0033] Figure 3 is a structure schematic diagram of a flip-folding state of an embodiment of the present application;

[0034] Figure 4 is a partial structure schematic diagram of a first leg rest mechanism and a second leg rest mechanism of an embodiment of the present application;

[0035] Figure 5 is a structure schematic diagram of one side of a telescopic mechanism of an embodiment of the present application;

[0036] Figure 6 is a structure schematic diagram of the other side of the telescopic mechanism of an embodiment of the present application.

[0037] Wherein, the reference mark meaning as follows: 1, drive motor; 11, moving part; 12, fixed part; 2, motor base; 21, rotating mechanism; 211, first support rod; 2111, first support arm; 2112, second support arm; 2113, turnover linkage; 212, assembly; 2121, first connecting hole; 2122, second connecting hole; 3, first leg support mechanism; 31, first side rod; 32, second side rod; 33, first connecting cross rod; 34, second connecting cross rod; 4, linkage arm; 5, rotating arm; 6, second leg support mechanism; 61, third side rod; 611, first sliding groove; 62, fourth side rod; 621, second sliding groove; 63, third connecting cross rod; 64, fourth connecting cross rod; 7, telescopic mechanism; 71, first telescopic arm; 72, second telescopic arm; 73, third telescopic arm; 8, roller; 9, first avoiding space; 10, second avoiding space. DETAILED DESCRIPTION

[0038] In order to better understand and implement, the following will be combined with the drawings of the utility model, the technical scheme in the embodiment of the utility model is described and discussed clearly and completely, obviously, only a part of the utility model described here, not all examples, based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts, belong to the protection scope of the utility model.

[0039] In order to facilitate the understanding of the embodiment of the utility model, the following will be combined with the drawings to make further explanation and description with specific examples, and each embodiment does not constitute the limitation of the embodiment of the utility model.

[0040] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing the specific embodiments, and are not intended to limit the utility model.

[0042] Embodiment 1 of the utility model refers to Figures 1-6As shown, a single-motor four-way leg support structure is disclosed, including a drive motor 1, a motor base 2, a first leg support mechanism 3, a linkage arm 4, and a rotating arm 5. The drive motor 1 includes a moving part 11 and a fixed part 12. Preferably, the drive motor 1 is a push rod motor, the moving part 11 is a push rod that can move relative to the motor, and the fixed part 12 is the motor body. In other embodiments, the drive motor 1 can also be a slider motor or other types; this embodiment does not impose specific limitations. The motor base 2 is assembled with the fixed part 12 of the drive motor 1. One end of the first leg support mechanism 3 is rotatably connected to the moving part 11. One end of the linkage arm 4 is rotatably connected to the motor base 2, and the other end is rotatably connected to the end of the first leg support mechanism 3 near the fixed part 12. One end of the rotating arm 5 is rotatably connected to the motor base 2, and the other end is rotatably connected to the first leg support mechanism 3. When the moving part 11 moves, it drives the first leg support mechanism 3 to rotate around the other end of the rotating arm 5 as an axis, allowing the first leg support mechanism 3 and the moving part 11 to switch between two states: folded and unfolded. The single-motor four-way leg support structure simplifies the overall structure by reducing one motor. Without the complex dual-motor and linkage mechanisms, the weight and manufacturing cost of the product are expected to decrease, reducing maintenance complexity and contributing to improved product reliability and lifespan. Because the single-motor four-way leg support structure is relatively simple, it is easier to adjust and adapt to different seat bottom structures and installation spaces, helping to expand the application range of four-way leg supports in different seat styles, thereby increasing its market acceptance and promotion potential.

[0043] To enable the leg support structure to extend, some embodiments include a second leg support mechanism 6. A telescopic mechanism 7 is provided between the second leg support mechanism 6 and the first leg support mechanism 3. When the drive motor 1 drives the first leg support mechanism 3 to flip and fold, the telescopic mechanism 7 retracts, causing the second leg support mechanism 6 to overlap with the first leg support mechanism 3. When the drive motor 1 drives the first leg support mechanism 3 to flip and open, the telescopic mechanism 7 extends, causing the second leg support mechanism 6 to extend parallel to the first leg support mechanism 3 away from the drive motor 1. The addition of the second leg support mechanism 6 allows the leg support structure to more comprehensively support the user's legs, providing a wider and more comfortable support area. The design of the telescopic mechanism 7 allows the second leg support mechanism 6 to extend or retract according to the user's needs, thus adapting to users of different heights and sitting postures, further improving user comfort. When the drive motor 1 drives the first leg support mechanism 3 to flip and fold, the telescopic mechanism 7 retracts, causing the second leg support mechanism 6 to overlap with the first leg support mechanism 3, significantly saving storage space.

[0044] In its initial state, i.e., the flipped / folded state, see [link / reference]. Figure 1As shown, the first leg support mechanism 3 and the second leg support mechanism 6 overlap, and both are vertically downward or slightly inclined. The angle between the first leg support mechanism 3 and the drive motor 1 is an acute angle. When the moving part 11 of the drive motor 1 moves, it drives the first leg support mechanism 3 to rotate about the other end of the rotating arm 5, so that the angle between the first leg support mechanism 3 and the drive motor 1 is an obtuse angle or a straight angle. At the same time, the telescopic mechanism 7 between the first leg support mechanism 3 and the second leg support mechanism 6 extends, causing the first leg support mechanism 3 and the second leg support mechanism 6 to be misaligned, thereby extending the length of the leg support. When the maximum length is reached, the leg support structure changes to a flip-open state, as shown. Figure 2 As shown.

[0045] To more precisely control the rotation angle between the first leg support mechanism 3 and the drive motor 1, in some embodiments, a rotating mechanism 21 is connected to one end of the motor base 2 near the first leg support mechanism 3. The rotating mechanism 21 includes a first support rod 211 and an assembly 212. The middle part of the first support rod 211 is connected to the motor base 2, and the assembly 212 is fitted to both ends of the first support rod 211. The assembly 212 includes a first connecting hole 2121 and a second connecting hole 2122. The first connecting hole 2121 is used for rotatable connection with one end of the linkage arm 4, and the second connecting hole 2122 is used for rotatable connection with one end of the rotating arm 5. This configuration allows the first leg support mechanism 3 to rotate and adjust within a wider range. Through the connection of the first support rod 211 and the assembly 212, the linkage arm 4 and the rotating arm 5 can respond more flexibly to the actions of the drive motor 1, thereby achieving four-way adjustment of the leg support.

[0046] In this embodiment 1, specifically, the first leg support mechanism 3 includes a first side rod 31, a second side rod 32, a first connecting crossbar 33, and a second connecting crossbar 34. One end of the first side rod 31 is rotatably connected to a linkage arm 4, and one end of the second side rod 32 is rotatably connected to a linkage arm 4. Both the first side rod 31 and the second side rod 32 are connected to the motor base 2 via a linkage arm 4, and they are reinforced by the first connecting crossbar 33 and the second connecting crossbar 34, forming a stable quadrilateral structure. The first connecting crossbar 33 is rotatably connected between one end of the first side rod 31 and one end of the second side rod 32, and the middle part of the first connecting crossbar 33 is rotatably connected to the moving part 11. The second connecting crossbar 34 is assembled between the first side rod 31 and the second side rod 32. This effectively distributes the force on the leg support during use and improves the overall stability of the structure. When the drive motor 1 is activated, it can directly and efficiently transmit power to the first leg support mechanism 3. This design reduces energy loss during transmission and improves transmission efficiency. The second leg support mechanism 6 includes a third side rod 61, a fourth side rod 62, a third connecting crossbar 63, and a fourth connecting crossbar 64. The third side rod 61 has a first sliding groove 611 to accommodate the first side rod 31, allowing the third side rod 61 to slide along the length direction of the first side rod 31. The fourth side rod 62 has a second sliding groove 621 to accommodate the second side rod 32, allowing the fourth side rod 62 to slide along the length direction of the second side rod 32. The third side rod 61 and the fourth side rod 62 are symmetrically arranged. When the second leg support mechanism 6 needs to retract, the third side rod 61 and the fourth side rod 62 can slide along the length directions of the first side rod 31 and the second side rod 32, allowing the second leg support mechanism 6 to fit tightly against the first leg support mechanism 3, greatly saving storage space. The third connecting crossbar 63 is assembled between the third side rod 61 and the fourth side rod 62. The fourth connecting crossbar 64 is assembled between the third side rod 61 and the fourth side rod 62. Similarly, the third side rod 61 and the fourth side rod 62 are connected to the first side rod 31 and the second side rod 32 via the second sliding groove 621, forming a stable sliding support structure. This design not only enhances the overall stability of the leg rest but also improves the support for the user's legs.

[0047] Preferably, to improve the smoothness between the first leg support mechanism 3 and the second leg support mechanism 6, rollers 8 are provided between the first side rod 31 and the first slide groove 611, and between the second side rod 32 and the second slide groove 621. The roller design significantly reduces direct friction between the first side rod 31 and the first slide groove 611, and between the second side rod 32 and the second slide groove 621. This reduced friction not only extends the service life of the leg support mechanism but also reduces noise and improves the user experience. The rollers 8 allow the first side rod 31 and the second side rod 32 to slide more smoothly within the first slide groove 611. This design provides users with a smoother operating experience when adjusting the length and position of the leg support.

[0048] In this embodiment 1, a first support arm 2111 and a second support arm 2112 extending towards the first leg support mechanism 3 are also connected to the first support rod 211. A flipping linkage 2113 is hinged between the first support arm 2111 and the second support arm 2112, and the flipping linkage 2113 is rotatably connected to the telescopic mechanism 7. The first support arm 2111 and the second support arm 2112, as important components connecting the first support rod 211 and the leg support mechanism, are connected to the telescopic mechanism 7 via the hinged flipping linkage 2113, forming a stable support structure. This design not only enhances the stability of the leg support mechanism but also improves its load-bearing capacity. The first support arm 2111 and the second support arm 2112 enable the telescopic mechanism 7 to extend when the leg support is flipped open. The rotatable connection between the flipping linkage 2113 and the telescopic mechanism 7 allows the power of the drive motor 1 to be transmitted to the leg support mechanism more efficiently. This design reduces energy loss during transmission and improves transmission efficiency.

[0049] Specifically, the telescopic mechanism 7 includes a first telescopic arm 71, a second telescopic arm 72, and a third telescopic arm 73. One end of the first telescopic arm 71 is rotatably connected to the flipping linkage 2113. One end of the second telescopic arm 72 is rotatably connected to the second leg support mechanism 6. Specifically, one end of the second telescopic arm 72 is rotatably connected to the fourth connecting crossbar 64 of the second leg support mechanism 6. One end of the third telescopic arm 73 is rotatably connected to the other end of the second telescopic arm 72, and the other end is rotatably connected to the first leg support mechanism 3. Specifically, the other end of the third telescopic arm 73 is rotatably connected to the second connecting crossbar 34 of the first leg support mechanism 3. The middle part of the third telescopic arm 73 is rotatably connected to the other end of the first telescopic arm 71. Preferably, the position where the third telescopic arm 73 is rotatably connected to the other end of the first telescopic arm 71 is slightly off-center from the middle of the third telescopic arm 73, facilitating its own rotation. The design of the telescopic mechanism 7 allows the power of the drive motor 1 to be transmitted to the leg support mechanism more efficiently. Through the rotational connection of each telescopic arm, power can be transmitted smoothly, completing the extension and folding effect of the telescopic mechanism 7, reducing energy loss during transmission and improving transmission efficiency.

[0050] See Figures 5-6 As shown, during the process of the angle between the first leg support mechanism 3 and the drive motor 1 changing from an acute angle to an obtuse angle, the flipping linkage 2113 between the first support arm 2111 and the second support arm 2112 gradually approaches the second connecting crossbar 34 in the first leg support mechanism 3, thereby driving the other end of the first telescopic arm 71 to gradually pass over the second connecting crossbar 34. At this time, the other end of the third telescopic arm 73 is constrained by the second connecting crossbar 34 and driven by the other end of the first telescopic arm 71, and rotates about the other end of the third telescopic arm 73 as an axis, causing one end of the third telescopic arm 73 to drive the second telescopic arm 72 to rotate away from the drive motor 1, thereby pushing out the second leg support mechanism 6 and completing the extension effect of the telescopic mechanism 7.

[0051] In some embodiments, to make the leg support mechanism more compact and save space, a first clearance space 9 is formed by arching the middle of the second telescopic arm 72 away from the third telescopic arm 73, providing space for the third telescopic arm 73 to move. The second connecting crossbar 34 arches at least partially away from the telescopic mechanism 7, forming a second clearance space 10, providing space for the first telescopic arm 71 and the third telescopic arm 73 of the telescopic mechanism 7 to move. Thus, the first clearance space 9 provides sufficient space for the third telescopic arm 73 to move, ensuring that it does not interfere with the second telescopic arm 72 during extension, retraction, and rotation. This design makes the adjustment of the leg support mechanism more flexible and smooth. Sufficient space for the third telescopic arm 73 can be provided without increasing the overall size. The second clearance space 10 provides a larger range of motion for the first telescopic arm 71 and the third telescopic arm 73 in the telescopic mechanism 7. This design ensures that the telescopic mechanism 7 can adjust the angle and position of the leg support more smoothly and flexibly without being obstructed by the second connecting crossbar 34.

[0052] In summary, the single-motor four-way leg support structure provided by this utility model has the following technical effects:

[0053] 1. By adopting a single-motor design, this leg support structure significantly simplifies the complex linkage mechanism of traditional dual-motor four-way leg supports. This not only reduces the number of transmission components but also lowers the overall weight and manufacturing cost of the product;

[0054] 2. Simplified structure means fewer potential points of failure, thus improving product reliability. At the same time, reduced wear on complex mechanical parts helps extend the product's lifespan.

[0055] 3. The single-motor four-way leg rest structure is relatively simple and flexible, making it easier to adjust and adapt to different seat bottom structures and installation spaces. This helps to expand the application range of this leg rest structure in different seat styles, increasing its market acceptance and promotion potential.

[0056] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A single-motor four-way leg support structure, characterized in that, include: A drive motor (1) is provided, the drive motor (1) comprising a moving part (11) and a fixed part (12); Motor mount (2), which is assembled with the fixing part (12) of the drive motor (1); The first leg support mechanism (3) has one end rotatably connected to the moving part (11); Linkage arm (4), one end of which is rotatably connected to the motor base (2), and the other end is rotatably connected to the end of the first leg support mechanism (3) near the fixed part (12); Rotating arm (5), one end of which is rotatably connected to the motor base (2), and the other end is rotatably connected to the first leg support mechanism (3); When the moving part (11) is displaced, it drives the first leg support mechanism (3) to rotate along the other end of the rotating arm (5) as an axis, so that the first leg support mechanism (3) and the moving part (11) can switch between two states: flipping and folding and flipping and opening.

2. The single-motor four-way leg support structure according to claim 1, characterized in that, It also includes a second leg support mechanism (6), and a telescopic mechanism (7) is provided between the second leg support mechanism (6) and the first leg support mechanism (3). When the drive motor (1) drives the first leg support mechanism (3) to flip and fold, the telescopic mechanism (7) contracts so that the second leg support mechanism (6) overlaps with the first leg support mechanism (3). When the drive motor (1) drives the first leg support mechanism (3) to flip and open, the telescopic mechanism (7) extends so that the second leg support mechanism (6) extends parallel to the first leg support mechanism (3) in a direction away from the drive motor (1).

3. The single-motor four-way leg support structure according to claim 2, characterized in that, The motor base (2) is connected to a rotating mechanism (21) at one end near the first leg support mechanism (3). The rotating mechanism (21) includes: The first support rod (211) is connected to the motor base (2) at its middle part; The assembly (212) is assembled at both ends of the first support rod (211). The assembly (212) includes a first connecting hole (2121) and a second connecting hole (2122). The first connecting hole (2121) is used to rotatably connect with one end of the linkage arm (4), and the second connecting hole (2122) is used to rotatably connect with one end of the rotating arm (5).

4. The single-motor four-way leg support structure according to claim 2, characterized in that, The first leg support mechanism (3) includes: The first side rod (31) has a linkage arm (4) rotatably connected to one end of the first side rod (31); The second side rod (32) has a linkage arm (4) rotatably connected to one end of the second side rod (32); The first connecting crossbar (33) is rotatably connected between one end of the first side bar (31) and one end of the second side bar (32), and the middle part of the first connecting crossbar (33) is rotatably connected to the moving part (11). The second connecting crossbar (34) is assembled between the first side bar (31) and the second side bar (32).

5. A single-motor four-way leg support structure according to claim 4, characterized in that, The second leg support mechanism (6) includes: The third side rod (61) has a first groove (611) for receiving the first side rod (31) so that the third side rod (61) slides along the length direction of the first side rod (31); The fourth side rod (62) has a second groove (621) for accommodating the second side rod (32) so that the fourth side rod (62) can slide along the length direction of the second side rod (32), and the third side rod (61) is symmetrically arranged with the fourth side rod (62); The third connecting crossbar (63) is assembled between the third side bar (61) and the fourth side bar (62); The fourth connecting crossbar (64) is assembled between the third side bar (61) and the fourth side bar (62).

6. A single-motor four-way leg support structure according to claim 5, characterized in that, Rollers (8) are provided between the first side rod (31) and the first slide groove (611), and between the second side rod (32) and the second slide groove (621).

7. A single-motor four-way leg support structure according to claim 3, characterized in that, The first support rod (211) is also connected to a first support arm (2111) and a second support arm (2112) extending to the first leg support mechanism (3). A flipping linkage (2113) is hinged between the first support arm (2111) and the second support arm (2112), and the flipping linkage (2113) is rotatably connected to the telescopic mechanism (7).

8. A single-motor four-way leg support structure according to claim 7, characterized in that, The telescopic mechanism (7) includes: The first telescopic arm (71) has one end rotatably connected to the flipping linkage (2113); The second telescopic arm (72) has one end rotatably connected to the second leg support mechanism (6); The third telescopic arm (73) has one end rotatably connected to the other end of the second telescopic arm (72) and the other end rotatably connected to the first leg support mechanism (3). The middle part of the third telescopic arm (73) is rotatably connected to the other end of the first telescopic arm (71).

9. A single-motor four-way leg support structure according to claim 8, characterized in that, The middle part of the second telescopic arm (72) arches outward toward the side away from the third telescopic arm (73) to form a first clearance space (9), which is used to reserve space for the third telescopic arm (73) to move.

10. A single-motor four-way leg support structure according to claim 4, characterized in that, The second connecting crossbar (34) arches at least partially toward the side away from the telescopic mechanism (7) to form a second clearance space (10), which is used to reserve space for the first telescopic arm (71) and the third telescopic arm (73) of the telescopic mechanism (7).

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