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

Abstract

The utility model belongs to the field of automobile leg supports, and particularly relates to a four-direction leg support of a five-connecting-rod mechanism, which comprises a motor support, a first lead screw motor is mounted on the motor support, an articulation piece is hinged to the output end of the first lead screw motor, and the articulation piece is fixedly connected with a balance push rod. The two ends of the balance push rod are each hinged to a connecting rod mechanism, the connecting rod mechanisms are hinged to the motor support, the connecting rod mechanisms are connected with a bearing platform, a supporting plate assembly is arranged on the upper side face of the bearing platform, and the lower side face of the supporting plate assembly is slidably connected with the upper side face of the bearing platform through a sliding rail assembly. And meanwhile, when the supporting plate moves, the supporting plate is prevented from shaking in the moving process, friction force is small, the moving stability of the supporting plate is improved, 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 five-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 issue, 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 structure arranged on both sides of the lower slide to realize the forward and backward movement of the leg rest, but the leg rest is prone to rocking left and right when moving, and the end of the leg rest is sharp when supporting the user's legs, which can easily bring a bad experience to the user, so a four-way leg rest with a five-link mechanism is needed to solve this problem. Summary of the Invention

[0005] In response to the above problems, the present invention proposes a four-way leg support with a five-link mechanism, which effectively solves the problems in the prior art of shaking, instability, high friction, uneven sliding, and sharp pedal ends when the support plate moves.

[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 with a five-link mechanism, including a motor bracket, a screw motor 1 is installed on the motor bracket, the output end of the screw motor 1 is hinged with a hinge, the hinge is fixedly connected to the balance push rod, and the two ends of the balance push rod are respectively hinged with a group of link mechanisms, the link mechanisms are hinged to the motor bracket, and the link mechanisms are connected to a supporting platform, and a support plate assembly is provided on the upper side of the supporting platform, and the lower side of the support plate assembly is slidably connected to the upper side of the supporting platform through a slide rail assembly.

[0007] Furthermore, the connecting rod mechanism includes an articulated rod one and an articulated rod two respectively hinged on the sides of the motor bracket, the end of the balancing push rod is hinged to the articulated rod one, the other end of the articulated rod two is hinged to the articulated rod three, the articulated rod three is hinged to the articulated rod one, the other end of the articulated rod one is hinged to the articulated rod four, and the articulated rod three and the articulated rod four are respectively connected to the supporting platform.

[0008] Furthermore, the support plate assembly includes a pedal arranged on the side of the supporting platform, a screw motor 2 is fixed to the supporting platform, the lower side of the pedal is slidably connected to the upper side of the supporting platform through a slide rail assembly, and the output end of the screw motor 2 is threadedly connected to a mating threaded cylinder, and the mating threaded cylinder is fixed to the pedal by bolt 1.

[0009] Furthermore, a protective shell is fixed on the supporting platform.

[0010] Furthermore, the slide rail assembly includes multiple slides opened on the pedal, a support plate is fixed on the supporting platform, a placement groove is opened on the support plate, a bolt 2 is threadedly connected to the placement groove, a matching column for limiting the left and right shaking of the pedal is sleeved on the bolt 2, the pedal is set on the supporting platform through the matching sliding of the matching column and the slide, and a pressure plate is fixed on the bolt 2.

[0011] Furthermore, the support plate is in a mountain shape, and contact blocks are fixed to the upper ends of both sides of the support plate.

[0012] Furthermore, the pedal is J-shaped.

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

[0014] The utility model facilitates the disassembly of the pallet through the mutual cooperation of the slide rail assembly, the supporting platform and the pallet. At the same time, it prevents the pallet from shaking when moving, reduces the friction, and improves the stability of the pallet movement. The end of the pedal is designed with a J-shaped arc, and the smooth surface can better fit the user's legs, 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 screw motor 2 of the utility model;

[0017] Figure 3 This is a schematic diagram of the position of the matching column of the utility model;

[0018] Figure 4 For this utility model Figure 3 Enlarged schematic diagram of point A in the middle.

[0019] In the figure: 1-supporting platform, 2-pedal, 3-motor bracket, 4-screw motor 1, 5-hinge, 6-balance push rod, 7-hinge rod 1, 8-hinge rod 2, 9-hinge rod 3, 10-hinge rod 4, 11-threaded cylinder, 12-protective shell, 13-slide, 14-support plate, 15-placement groove, 16-bolt 2, 17-matching column, 18-pressure plate, 19-contact block, 20-bolt 1. 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 five-link mechanism includes a motor bracket 3, wherein the motor bracket 3 includes relatively arranged bracket side panels and structural reinforcement ribs connected between the bracket side panels, and a screw motor 4 fixedly connected to the motor bracket 3 by screws is provided between the bracket side panels, and the output end of the screw motor 4 is hinged with a hinge 5, and the hinge 5 is welded with a balancing push rod 6, and the two ends of the balancing push rod 6 respectively pass through a group of connecting rod mechanisms to form a hinge, and the connecting rod mechanism is hinged to the motor bracket, and the connecting rod mechanism is connected to a supporting platform 1, and a support plate assembly is provided on the upper side of the supporting platform 1, and the lower side of the support plate assembly is slidably connected to the upper side of the supporting platform 1 through a slide rail assembly.

[0022] In this embodiment, the connecting rod mechanism includes a hinge rod 1 7 and a hinge rod 2 8 respectively hinged on the side of the motor bracket 3, the hinge rod 1 7 is located above the hinge rod 2 8, the end of the balance push rod 6 passes through the hinge rod 1 7 to form a hinge, the other end of the hinge rod 2 8 is hinged with a hinge rod 3 9, the hinge rod 3 9 is hinged to the hinge rod 1 7, the other end of the hinge rod 1 7 is hinged to the hinge rod 4 10, the hinge rod 3 9 and the hinge rod 4 10 are respectively hinged to the supporting platform 1, the motor bracket 3, the hinge rod 1 7, the hinge rod 2 8, the hinge rod 3 9, the hinge rod 4 10 are respectively hinged to the supporting platform 1, and the motor bracket 3, the hinge rod 1 7, the hinge rod 2 8, the hinge rod 3 9, the hinge rod 4 10 are respectively hinged to the supporting platform 1. The connecting rod 4 10 and the supporting platform 1 are hinged by means of hinge screws, wherein the hinge bolts are the hinge shafts, which are driven by the operation of the screw motor 1 4 to push the hinge part 5 to move, thereby driving the balancing push rod 6 to move, the balancing push rod 6 drives the hinge rod 1 7 to move, the hinge rod 1 7 drives the hinge rod 4 10 to move, and the hinge rod 1 7 also drives the hinge rod 3 9 to move, and the hinge rod 3 9 drives the hinge rod 2 8 to move. At this time, the hinge rod 3 9 and the hinge rod 4 10 move together to drive the pallet assembly to unfold, and the unfolding and folding of the pallet assembly can be controlled by controlling the rotation direction of the screw motor 1 4.

[0023] In this embodiment, the support plate assembly includes a pedal 2 arranged on the upper side of the supporting platform 1, and a screw motor 21 is fixed on the supporting platform 1. The lower side of the pedal 2 is slidably connected to the upper side of the supporting platform 1 through a slide rail assembly. The output end of the screw motor 2 is threadedly connected to a matching threaded cylinder 11, and the matching threaded cylinder 11 is fixed to the pedal 2 by a bolt 20. The operation of the screw motor 21 drives the threaded cylinder 11 to move, and the threaded cylinder 11 drives the pedal 2 to move. The expansion and folding of the pedal 2 is controlled by controlling the rotation direction of the screw motor 21.

[0024] In this embodiment, a protective shell 12 is fixed on the supporting platform 1, which can cover the pedal 2 and the screw motor 21 to prevent dust and debris from entering the pedal 2 and affecting the movement of the pedal 2.

[0025] In this embodiment, the slide rail assembly includes a plurality of slides 13 provided on the pedal 2, a support plate 14 is fixed on the supporting platform 1, a placement groove 15 is provided on the support plate 14, a bolt 2 16 is connected to the inner thread of the placement groove 15, and a matching column 17 is sleeved on the bolt 2 16 for limiting the left and right shaking of the pedal 2, and the pedal 2 is set on the supporting platform 1 through the matching sliding of the matching column 17 and the slide 13, and a pressure plate 18 is fixed on the bolt 2 16. First, place the pedal 2 on the supporting platform 1, so that the bolt 2 16 and the matching column 17 pass through the slide 13 and are threadedly connected to the placement groove 15 on the support plate 14, and tighten the bolt 2 16 to make the pedal 2 and the support plate 14 fit together, and the diameter of the matching column 17 is the same as the width of the slide 13, so as to prevent the pedal 2 from sliding left and right when moving, thereby improving the stability of the movement of the pedal 2.

[0026] In this embodiment, the support plate 14 is in a mountain shape, and contact blocks 19 are fixed to the upper ends of both sides of the support plate 14. The contact blocks 19 reduce the contact area between the pedal 2 and the support plate 14, reduce the friction, and make the pedal 2 move more smoothly.

[0027] In this embodiment, the pedal 2 is J-shaped. When the user uses it, the end of the pedal 2 is designed with a J-shaped arc, and the smooth surface can better fit the user's legs, thereby improving the user experience.

[0028] When the utility model is in use, the screw motor 4 drives the balancing push rod 6 to be pushed forward, the balancing push rod 6 drives the hinged hinge rod 1 7 to move, the hinged rod 1 7 drives the hinged hinge rod 3 9 and the hinged hinge rod 2 8 to move, and the hinged hinge rod 1 7 drives the hinged hinge rod 4 10 and the hinge rod 3 9 to move the supporting platform 1 obliquely upward. During the movement, the pedal 2 can be driven to extend forward or move backward from the supporting platform 1 by cooperating with the screw motor 21 to realize the movement of the pedal 2 in four directions: up, down, front and back.

[0029] 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 five-link mechanism, characterized by: It includes a motor bracket, on which a screw motor 1 is installed, the output end of the screw motor 1 is hinged with a hinge, the hinge is fixedly connected to a balancing push rod, and both ends of the balancing push rod are hinged with a group of connecting rod mechanisms, the connecting rod mechanisms are hinged to the motor bracket, and the connecting rod mechanisms are connected to a supporting platform, and a support plate assembly is provided on the upper side of the supporting platform, and the lower side of the support plate assembly is slidably connected to the upper side of the supporting platform through a slide rail assembly, and the support plate assembly includes a pedal provided on the side of the supporting platform, and the pedal is J-shaped.

2. The four-way leg support of a five-link mechanism according to claim 1, characterized in that: The connecting rod mechanism includes an articulated rod 1 and an articulated rod 2 respectively hinged on the sides of the motor bracket. The end of the balancing push rod is hinged to the articulated rod 1, and the other end of the articulated rod 2 is hinged to the articulated rod 3. The articulated rod 3 is hinged to the articulated rod 1, and the other end of the articulated rod 1 is hinged to the articulated rod 4. The articulated rod 3 and the articulated rod 4 are respectively connected to the supporting platform.

3. The four-way leg support of a five-link mechanism according to claim 1, characterized in that: A second screw motor is fixed on the supporting platform, the lower side of the pedal is slidably connected to the upper side of the supporting platform through a slide rail assembly, the output end of the second screw motor is threadedly connected to a matching threaded cylinder, and the matching threaded cylinder is fixed to the pedal by a first bolt.

4. The four-way leg support of a five-link mechanism according to claim 1, characterized in that: A protective shell is fixed on the supporting platform.

5. The four-way leg support of a five-link mechanism according to claim 1, characterized in that: The slide rail assembly includes multiple slides opened on the pedal, a support plate is fixed on the supporting platform, a placement groove is opened on the support plate, a second bolt is threadedly connected to the placement groove, a matching column for limiting the left and right shaking of the pedal is sleeved on the second bolt, the pedal is set on the supporting platform through the matching sliding of the matching column and the slide, and a pressure plate is fixed on the second bolt.

6. The four-way leg support of a five-link mechanism according to claim 5, characterized in that: The supporting plate is in a mountain shape, and contact blocks are fixed on the upper ends of both sides of the supporting plate.

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