Four-way leg support of multi-connecting-rod mechanism

Abstract

The utility model belongs to the field of automobile leg supports, and particularly relates to a four-way leg support of a multi-connecting-rod mechanism, which comprises a motor support, a first driving assembly is mounted on the motor support, an articulation piece is hinged to the output end of the first driving assembly, the articulation piece is fixedly connected with a balance push rod, and two ends of the balance push rod are respectively hinged with a group of connecting rod assemblies. The connecting rod assembly is connected with the motor support, a supporting plate assembly for supporting legs is installed on the connecting rod assembly, a second driving assembly is installed below the supporting plate assembly, a detachable connecting frame is arranged at the output end of the second driving assembly, the connecting frame is fixed to the bearing platform, and the first driving assembly pushes the connecting rod assembly to enable the bearing platform and the pedal to be lifted. The sliding rail assembly is arranged between the pedal and the supporting plate, so that the structure is more stable, meanwhile, sundries are not prone to entering the sliding rail to prevent the pedal from sliding, the design that the sliding rail assembly and the second driving assembly are arranged on the supporting plate assembly can reduce noise in the moving process, and better experience feeling is brought to a user.

Description

Technical Field

[0001] The utility model belongs to the field of leg supports for automobile seats, in particular to a four-way leg support with a multi-link mechanism. Background Art

[0002] Among the currently available leg support mechanisms for car seats, most are two-way leg support mechanisms that can only be unfolded and cannot be further extended after unfolding, so that the passenger's calf cannot be fully supported, resulting in poor comfort and a poor experience.

[0003] To address this technical problem, some structures in which the leg rests can move forward and backward have appeared on the market, so that the leg rests can be lifted and moved forward and backward at the same time to achieve four-way adjustment.

[0004] For example, the new multifunctional leg rest disclosed in the Chinese invention patent with patent publication number CN115027337A, the leg rest can be moved forward and backward and is arranged on the lower slide, and a guide structure is provided between the corresponding leg rest and both sides of the lower slide, and a concave cavity is provided in the middle of the lower slide, and synchronous wheels arranged front and back are provided in the concave cavity, and a synchronous belt is wound around the synchronous wheel, and a first power source is provided. The first power source is combined with the guide structures arranged on both sides of the lower slide to realize the forward and backward movement of the leg rest, but the guide structures on the side that connect the leg rest and the lower slide through the side tracks are prone to deformation when the leg rest bears weight, and the middle of the leg rest cannot be effectively supported and is prone to deformation, and the load-bearing capacity is poor. At the same time, the guide structures on both sides are prone to getting stuck with debris, and the leg rest makes a lot of noise when moving. Therefore, a four-way leg rest with a multi-link mechanism is needed that can improve the load-bearing capacity, is not easy to get stuck with debris, and has low noise. Utility Model Content

[0005] In response to the above problems, the utility model proposes a four-way leg rest with a multi-link mechanism, which effectively solves the problems in the prior art that the guide structure is easily stuck with debris, the middle of the leg rest cannot provide effective support and is easily deformed, the load-bearing capacity is poor, and there is loud noise when moving.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a four-way leg support of a multi-link mechanism, comprising a motor bracket, a drive assembly 1 is installed on the motor bracket, the output end of the drive assembly 1 is hinged with a hinge, the hinge is fixedly connected to a balancing push rod, both ends of the balancing push rod are hinged with a group of connecting rod assemblies, the connecting rod assemblies are connected to the motor bracket, a support plate assembly supporting the leg is installed on the connecting rod assembly, a drive assembly 2 is installed below the support plate assembly, the output end of the drive assembly 2 is threadedly connected with a connecting frame, the connecting frame is fixed to the supporting platform, and the pedal is driven to slide along the supporting platform by the screw motor 2;

[0007] Furthermore, the connecting rod assembly includes a first connecting rod rotatably connected to the balancing push rod, the first connecting rod is rotatably installed on the motor bracket, the first connecting rod is rotatably connected to the second connecting rod, the second connecting rod is rotatably connected to the supporting platform, the supporting platform is rotatably connected to the seventh connecting rod, the seventh connecting rod is rotatably connected to the sixth connecting rod, the sixth connecting rod is rotatably connected to the fifth connecting rod, the fifth connecting rod is rotatably connected to the fourth connecting rod, the fourth connecting rod is rotatably connected to the motor bracket, and the driving assembly pushes the connecting rod assembly to lift the supporting platform and the pedal.

[0008] Furthermore, the pallet assembly includes a pedal installed on the upper side of the supporting platform, the second drive assembly is fixed on the pedal, and the lower side of the pedal is slidably connected to the upper side of the supporting platform through a slide rail assembly. By arranging the slide rail assembly between the pedal and the supporting platform, the structure is made more stable, and at the same time, it is less likely for debris to enter the interior of the slide rail assembly to block the sliding of the pedal.

[0009] Furthermore, the slide rail assembly includes a slide installed on the supporting platform, a ball bracket is provided on the slide, a rollable ball is provided on the ball bracket, a sliding core is provided on the slide, the sliding core is supported by the ball and can slide along the slide, the sliding core is fixed on the reinforcing bracket, and the reinforcing bracket is installed on the pedal. The supporting platform and the pedal can be extended obliquely upward through the connecting rod mechanism, and at the same time cooperate with the pedal slidably connected to the supporting platform to achieve four-way adjustment. The use of ball bearings to support the sliding core makes the movement lighter and quieter.

[0010] Furthermore, a first limit block is fixed on the upper side of both ends of the slide, a second limit block is fixed on the lower side of the reinforcement bracket, a reinforcement plate is fixed on the bottom of the slide, and a limit plate is fixed on the reinforcement plate to limit the moving distance of the pedal to prevent the pedal from moving too far and becoming out of fit.

[0011] Furthermore, the reinforcing bracket and the slide are respectively connected to the pedal and the supporting platform through first bolt threads, which facilitates the disassembly of the slide and the reinforcing bracket.

[0012] Furthermore, support bars are clamped on the two sixth connecting rods to provide support and protection, making the structure of the connecting rod assembly more stable.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model arranges the slide rail assembly on the upper side of the supporting platform and is slidably connected to the pedal, so that the pedal and the supporting platform have a higher load-bearing capacity, the structure of the sliding part is not easily damaged or stuck with debris, and the design of the slide rail assembly reduces the noise generated when the pedal moves, giving the user a better experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the position of the slide rail assembly of the utility model;

[0017] Figure 3 It is a side view schematic diagram of the slide rail assembly of the utility model;

[0018] Figure 4 It is a bottom view schematic diagram of the slide rail assembly of the present invention.

[0019] In the figure: 1-motor bracket, 2-drive component 1, 3-hinge, 4-balance push rod, 5-first connecting rod, 6-second connecting rod, 7-support platform, 8-seventh connecting rod, 9-sixth connecting rod, 10-fifth connecting rod, 11-fourth connecting rod, 12-pedal, 13-slide, 14-ball bracket, 15-ball, 16-slide core, 17-reinforcement bracket, 18-drive component 2, 19-connecting frame, 20-first limit block, 21-second limit block, 22-first bolt, 23-support bar, 24-limiting plate, 25-reinforcement plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1-4 As shown, a four-way leg support of a multi-link mechanism includes a motor bracket 1, a drive assembly 2 is mounted on the motor bracket 1, an output end of the drive assembly 2 is hinged to a hinge 3, the hinge 3 is fixedly connected to a balancing push rod 4, and both ends of the balancing push rod 4 are hinged to a group of connecting rod assemblies, a supporting platform 7 is mounted on the connecting rod assembly, and a support plate assembly for supporting the legs is provided on the supporting platform 7;

[0022] The connecting rod assembly includes a first connecting rod 5 rotatably connected to the balancing push rod 4, the first connecting rod 5 is rotatably installed on the motor bracket 1, the first connecting rod 5 is rotatably connected to the second connecting rod 6, the second connecting rod 6 is rotatably connected to the supporting platform 7, the supporting platform 7 is rotatably connected to the seventh connecting rod 8, the seventh connecting rod 8 is rotatably connected to the sixth connecting rod 9, the sixth connecting rod 9 is rotatably connected to the fifth connecting rod 10, the fifth connecting rod 10 is rotatably connected to the fourth connecting rod 11, the fourth connecting rod 11 is rotatably connected to the motor bracket 1, and a driving assembly 2 18 is installed below the pedal 12, the driving assembly 2 18 is installed below the pedal 12, and the driving assembly 2 18 is installed below the pedal 12, ... above the pedal 12, the driving assembly 2 18 is installed above the pedal 12, the driving assembly 2 18 is installed above the pedal 12, the driving assembly 2 18 is installed above the pedal 12, the driving assembly 2 18 is installed above the pedal 12, the driving assembly 2 The output end of the dynamic component 2 18 is threadedly connected to a detachable connecting frame 19, and the connecting frame 19 is fixed to the supporting platform 7 by bolts. The driving component 2 18 is arranged on the pedal 12, and the center of gravity can be replaced to make the pedal 12 more stable when moving, and the driving component 2 18 is installed on the pedal 12 and is not directly connected to the supporting platform 7, thereby reducing the transmission of the vibration of the driving component 2 18 and improving the user experience. The driving component 1 and the driving component 2 can respectively adopt the leg support rotating screw motor and the leg support extending screw motor in the four-way leg support mechanism of a car seat with application number 202121149264.5;

[0023] The driving component 2 controls the expansion and folding of the supporting platform 7 and the pallet assembly by driving the connecting rod assembly. The driving component 2 drives the balancing push rod 4 to push the first connecting rod 5 to rotate around the rotation connection axis with the motor bracket 1. When the first connecting rod 5 rotates, it drives the second connecting rod 6 to move, and the second connecting rod 6 drives the pallet to move. When the first connecting rod 5 drives the pallet to move, the pallet drives the seventh connecting rod 8 to move, the seventh connecting rod 8 drives the sixth connecting rod 9 to move, the sixth connecting rod 9 drives the fifth connecting rod 10 to move, and the fifth connecting rod 10 drives the fourth connecting rod 11 to rotate around the connection axis with the motor bracket 1. The fifth connecting rod 10 is hinged to the first connecting rod 5, and the sixth connecting rod 9 is hinged to the second connecting rod 6.

[0024] In this embodiment, the support plate assembly includes a pedal 12 provided on the upper side of the supporting platform 7, and the lower side of the pedal 12 is slidably connected to the upper side of the supporting platform 7 via a slide rail assembly.

[0025] In this embodiment, the slide rail assembly includes a slide 13 installed on the supporting platform 7, a ball bracket 14 is fixed on the slide 13, a rollable ball 15 is provided on the ball bracket 14, a placement hole is opened on the ball bracket 14, the ball 15 is placed in the placement hole and can roll, a slide core 16 is provided on the slide 13, the slide core 16 is supported by the ball 15 and can slide along the slide 13, the slide core 16 is fixed on the reinforcement bracket 17, and the reinforcement bracket 17 is installed on the pedal 12, the slide 13 is U-shaped and bends inward, and the ball bracket 14 is W-shaped.

[0026] In this embodiment, a first limit block 20 is fixed to the upper side of both ends of the slide 13, a second limit block 21 is fixed to the lower side of the reinforcing bracket 17, a reinforcing plate 25 is fixed to the bottom of the slide 13, and a limit plate 24 is fixed on the reinforcing plate 25. The cooperation between the second limit block 21 and the first limit block 20 limits the retracted position of the reinforcing bracket 17, thereby limiting the retracted position of the pedal 12. A baffle is fixed to the bottom of the reinforcing bracket 17 on the side of the second limit block 21, and the baffle can support the limit plate 24. The limit plate 24 limits the extended length of the reinforcing bracket 17. When the reinforcing bracket 17 supports the baffle of the limit plate 24, the pedal 12 no longer extends, limiting the extended length of the pedal 12.

[0027] In this embodiment, the reinforcing bracket 17 and the slideway 13 are respectively threadedly connected to the pedal 12 and the supporting platform 7 through the first bolt 22, which can be easily dismantled, repaired and replaced.

[0028] In this embodiment, the two sixth connecting rods 9 are clamped with support bars 23, and the two sixth connecting rods 9 are provided with a slot on the lower side away from the fifth connecting rod 10. The support bars 23 are clamped in the slot. The support bars 23 are made of metal and play a supporting role. They have low precision requirements, low cost, and are easy to replace directly.

[0029] When the utility model is in use, the driving component 1 2 drives the balancing push rod 4 to be pushed forward, and the balancing push rod 4 drives the hinged connecting rod component to move, and the connecting rod component causes the supporting platform 7 to move obliquely upward. During the movement, the pedal 12 can be driven to extend forward or move backward from the supporting platform 7 by cooperating with the driving component 2 18, so as to realize the movement of the pedal 12 in four directions: up, down, front and back.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A four-way leg support with a multi-link mechanism, characterized by: It includes a motor bracket, on which a drive component 1 is installed, the output end of the drive component 1 is hinged with a hinge, the hinge is fixedly connected to a balance push rod, both ends of the balance push rod are hinged with a group of connecting rod assemblies, the connecting rod assemblies are connected to the motor bracket, a supporting platform is installed on the connecting rod assembly, a support plate assembly for supporting legs is provided on the supporting platform, a drive component 2 is installed below the support plate assembly, the output end of the drive component 2 is provided with a detachable connecting frame, and the connecting frame is fixed to the supporting platform.

2. The four-way leg support of a multi-link mechanism according to claim 1, characterized in that: The connecting rod assembly includes a first connecting rod rotatably connected to a balancing push rod, the first connecting rod is rotatably mounted on a motor bracket, the first connecting rod is rotatably connected to a second connecting rod, the second connecting rod is rotatably connected to a supporting platform, the supporting platform is rotatably connected to a seventh connecting rod, the seventh connecting rod is rotatably connected to a sixth connecting rod, the sixth connecting rod is rotatably connected to a fifth connecting rod, the fifth connecting rod is rotatably connected to a fourth connecting rod, and the fourth connecting rod is rotatably connected to the motor bracket.

3. The four-way leg support of a multi-link mechanism according to claim 1, characterized in that: The support plate assembly includes a pedal arranged on the side surface of the supporting platform, the second driving assembly is fixed on the pedal, and the lower side surface of the pedal is slidably connected to the upper side surface of the supporting platform through a slide rail assembly.

4. The four-way leg support of a multi-link mechanism according to claim 3, characterized in that: The slide rail assembly includes a slide installed on a supporting platform, a ball bracket is provided on the slide, a rollable ball is provided on the ball bracket, a sliding core is provided on the slide, the sliding core is supported by the ball and can slide along the slide, the sliding core is fixed on a reinforcing bracket, and the reinforcing bracket is installed on the pedal.

5. The four-way leg support of a multi-link mechanism according to claim 4, characterized in that: A first limiting block is fixed to the upper sides of both ends of the slide, a second limiting block is fixed to the lower side of the reinforcement bracket, a reinforcement plate is fixed to the bottom of the slide, and a limiting plate is fixed to the reinforcement plate.

6. The four-way leg support of a multi-link mechanism according to claim 5, characterized in that: The reinforcing bracket and the slideway are respectively connected to the pedal and the supporting platform through first bolt threads.

7. The four-way leg support of a multi-link mechanism according to claim 2, characterized in that: The two sixth connecting rods are clamped with support bars.

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