Gear connecting rod type leg support

Abstract

The utility model discloses a gear connecting rod type leg support which comprises two installation frames, a first support and a second support are fixed to the two installation frames respectively, a protection frame is fixed to the first support, a motor is fixed to the installation frame provided with the first support, the motor is located between the first support and the installation frame, and the second support is fixed to the second support. A transmission assembly rotationally connected to the first support is installed at the output end of the motor, the transmission assembly is fixed to a driving shaft, the transmission assembly is located between the first support and the protection frame, limiting assemblies are arranged at the two ends of the driving shaft, and two leg brackets are fixed to the driving shaft so that the driving shaft can be conveniently driven to rotate; the function of limiting the rotating angle of the driving shaft is added, the driving shaft is prevented from rotating too large and being disengaged from cooperation, and the limiting assembly is simple in structure, small in occupied space and capable of saving space.

Description

Technical Field

[0001] The utility model belongs to the technical field of leg supports and relates to a gear-connecting rod type leg support. Background Art

[0002] As cars become increasingly common, people's demands for vehicle comfort are also increasing. Limited interior space makes it difficult for rear passengers to stretch out during long journeys. This, coupled with prolonged bending of the knees and lack of space for the feet, can exacerbate fatigue. For high-end luxury models, consumers are opting for rear-seat footrests installed on the front seatbacks, providing rear passengers with a place to rest their feet and enhancing comfort.

[0003] The Chinese utility model patent application number 202123029001.3 discloses a footrest, a car seat and a vehicle, wherein the vehicle includes a car seat, the car seat includes a seat frame, a driver and a footrest, the footrest is rotatably arranged on the seat frame around its rotation axis, the driver is installed on the seat frame, the driver is connected to the footrest, the footrest is rotatably arranged on the back of the car seat, the footrest is formed with a main surface for resting the feet, and the main surface is provided with a plurality of protrusions. The vehicle of the utility model can improve the comfort of the feet and relieve foot fatigue. A limiting component needs to be provided at the drive assembly of the existing footrest to control the rotation angle of the footrest. However, the existing footrest has high precision requirements for the limiting component, high production cost, and is not easy to produce. Therefore, it is necessary to design a gear-link type leg rest to solve the above problems. Summary of the Invention

[0004] In view of the above problems and to overcome the defects of the prior art, the present invention proposes a gear-linkage type leg rest. The purpose of the present invention is to facilitate the rotation of the drive shaft, increase the function of limiting the rotation angle of the drive shaft, prevent the drive shaft from rotating too much and getting out of engagement, and the limiting component has a simple structure, low production precision, saves costs, occupies little space, and saves space.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the present invention includes two mounting frames, a first bracket and a second bracket are fixed on the two mounting frames respectively, a protective frame is fixed on the first bracket, a motor is fixed on the mounting frame on which the first bracket is installed, the motor is located between the first bracket and the mounting frame, a transmission assembly rotatably connected to the first bracket is installed on the output end of the motor, the transmission assembly is fixed on the drive shaft, the transmission assembly is located between the first bracket and the protective frame, limiting assemblies are provided at both ends of the drive shaft, and two leg brackets are fixed on the drive shaft.

[0006] Preferably, a support plate is fixed between the two mounting frames, a clamping frame is fixed on the support plate, two return springs are sleeved on the drive shaft, one end of the two return springs are fixed on the drive shaft, and the other end of the two return springs are fixed on the clamping frame.

[0007] Preferably, the transmission assembly includes a gear fixed to the motor, the gear is meshed with a sector-shaped tooth plate, the sector-shaped tooth plate is fixed to the drive shaft, and the drive shaft is rotatably connected to the first bracket and the second bracket.

[0008] Preferably, the limiting assembly includes limiting blocks fixed to both ends of the driving shaft, and a limiting sleeve is fixed to the first bracket and the second bracket respectively, and the two limiting sleeves are respectively mounted on the two limiting blocks.

[0009] Preferably, a protrusion is fixed on the limiting block, and an arc-shaped groove for limiting the protrusion is provided on the limiting sleeve.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The utility model can well control the rotation angle of the drive shaft and the leg bracket through the transmission component and the limit component, and can limit the maximum rotation angle of the leg bracket. The limit component is close to both sides of the drive shaft. The overall structure is simple and occupies a small space. The plastic-coated metal parts in the limit component can produce elastic deformation, thereby effectively absorbing the asynchronous error caused by manufacturing to meet the use requirements. It has low precision requirements, is easy to produce, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a three-dimensional schematic diagram of the structure of the utility model from another perspective;

[0014] Figure 3 For this utility model Figure 2 A magnified schematic diagram of point A in the middle;

[0015] Figure 4 This is a schematic diagram of the position of the gears in the present invention.

[0016] Figure numerals: 1, mounting frame; 2, first bracket; 3, second bracket; 4, protective frame; 5, motor; 6, drive shaft; 7, leg bracket; 8, support plate; 9, clamping frame; 10, return spring; 11, gear; 12, fan-shaped tooth plate; 13, limit block; 14, limit sleeve; 15, protrusion; 16, arc groove. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying 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.

[0018] The following is combined with Figure 1-4 The specific implementation methods of the present utility model are further described in detail.

[0019] In this embodiment, by Figure 1-2 and Figure 4 As shown, the utility model includes two mounting frames 1, a first bracket 2 and a second bracket 3 are fixed on the two mounting frames 1, a protective frame 4 is fixed on the first bracket 2, a motor 5 is fixed on the mounting frame 1 on which the first bracket 2 is mounted, the motor 5 is located between the first bracket 2 and the mounting frame 1, and a transmission assembly rotatably connected to the first bracket 2 is installed at the output end of the motor 5, the transmission assembly is fixed on a drive shaft 6, and the transmission assembly is located between the first bracket 2 and the protective frame 4. Limiting assemblies are provided at both ends of the drive shaft 6, and two leg brackets 7 are fixed on the drive shaft 6;

[0020] The operation of the motor 5 drives the transmission assembly to operate, thereby driving the drive shaft 6 to rotate, and the rotation angle of the drive shaft 6 is limited by the limit assembly.

[0021] In this embodiment, by Figure 1-2 and Figure 4 As shown, a support plate 8 is fixed between the two mounting frames 1, a clamping frame 9 is fixed on the support plate 8, two return springs 10 are sleeved on the drive shaft 6, one end of the two return springs 10 are fixed on the drive shaft 6, and the other ends of the two return springs 10 are fixed on the clamping frame 9;

[0022] The return spring 10 is used to assist the leg bracket 7 in returning to its original position.

[0023] In this embodiment, by Figure 4 As shown, the transmission assembly includes a gear 11 fixed to the motor 5, the gear 11 is meshed with a sector-shaped tooth plate 12, the sector-shaped tooth plate 12 is fixed to the drive shaft 6, and the drive shaft 6 is rotatably connected to the first bracket 2 and the second bracket 3 through a bearing;

[0024] The operation of the motor 5 drives the gear 11 to rotate, the gear 11 drives the sector tooth plate 12 to rotate, the sector tooth plate 12 drives the drive shaft 6 to rotate, thereby driving the drive shaft 6 to rotate, and the rotation angle of the sector tooth plate 12 is limited by the limit assembly to prevent the sector tooth plate 12 from rotating too much and disengaging from the gear 11.

[0025] In this embodiment, by Figure 1-4 As shown, the limiting assembly includes limiting blocks 13 fixed at both ends of the driving shaft 6, the driving shaft 6 passes through the first bracket 2 and the second bracket 3, the two limiting blocks 13 are respectively fixed to the ends of the driving shaft 6 passing through the first bracket 2 and the second bracket 3, and a limiting sleeve 14 is respectively fixed on the first bracket 2 and the second bracket 3, and the two limiting sleeves 14 are respectively mounted on the two limiting blocks 13.

[0026] In this embodiment, by Figure 2-4 As shown, a protrusion 15 is fixed on the limiting block 13, and an arc-shaped groove 16 for limiting the protrusion 15 is opened on the limiting sleeve 14;

[0027] The sector tooth plate 12 drives the drive shaft 6 and the limit block 13 to rotate, and the protrusion 15 of the limit block 13 moves in the arc groove 16 of the limit sleeve 14. When the protrusion 15 fits the side wall of the arc groove 16, the protrusion 15 moves to the maximum distance, limiting the rotation angle of the sector tooth plate 12;

[0028] The two limit blocks 13 and the limit sleeve 14 are respectively installed on both sides of the drive shaft 6, occupying a small space;

[0029] When the limit blocks 13 and the limit sleeves 14 on both sides are used at the same time, it is easy for production errors to cause different limit ranges. The limit sleeves 14 use plastic-coated metal parts that can produce elastic deformation, thereby effectively absorbing the asynchronous errors caused by manufacturing to meet the needs of use, easy production, and reduce costs.

[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 gear-link type leg support, characterized by: It includes two mounting frames, a first bracket and a second bracket are fixed on the two mounting frames respectively, a protective frame is fixed on the first bracket, a motor is fixed on the mounting frame on which the first bracket is installed, the motor is located between the first bracket and the mounting frame, and a transmission assembly rotatably connected to the first bracket is installed at the output end of the motor, the transmission assembly is fixed on the drive shaft, the drive shaft is rotatably connected to the first bracket and the second bracket, the transmission assembly is located between the first bracket and the protective frame, limiting assemblies are provided at both ends of the drive shaft, and two leg brackets are fixed on the drive shaft.

2. The gear-link type leg support according to claim 1, characterized in that: A support plate is fixed between the two mounting frames, a clamping frame is fixed on the support plate, two return springs are sleeved on the driving shaft, one end of the two return springs are fixed on the driving shaft, and the other end of the two return springs are fixed on the clamping frame.

3. The gear-link type leg support according to claim 1, characterized in that: The transmission assembly includes a gear fixed on the motor, the gear is meshed with a sector-shaped tooth plate, and the sector-shaped tooth plate is fixed on the driving shaft.

4. The gear-link type leg support according to claim 1, characterized in that: The limiting assembly includes limiting blocks fixed to both ends of the driving shaft. A limiting sleeve is fixed to each of the first bracket and the second bracket. The two limiting sleeves are respectively mounted on the two limiting blocks.

5. The gear-link type leg support according to claim 4, characterized in that: A protrusion is fixed on the limiting block, and an arc-shaped groove for limiting the protrusion is opened on the limiting sleeve.

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