Automobile seat pedal transmission structure

Abstract

The utility model discloses an automobile seat pedal transmission structure which comprises a backrest framework and a pedal framework, a rotating shaft is arranged at the inner end of the pedal framework, the two ends of the rotating shaft are rotatably arranged on the lower portion of the rear side of the backrest framework, and a second gear is fixedly arranged at one end of the rotating shaft. A first gear meshed with the second gear and a driving mechanism for driving the first gear to rotate are arranged on the backrest framework; and the driving mechanism works and can drive the rotating shaft to rotate under the transmission action of the first gear and the second gear, so that the pedal framework turns over at the lower part of the rear side of the backrest framework. The pedal has the advantages that through meshing transmission of the first gear and the second gear, the driving mechanism can accurately and efficiently transmit power to the rotating shaft, the rotating stability of the rotating shaft is guaranteed, and the pedal can be kept stable in the folding and unfolding process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile seat, specifically relates to a automobile seat footrest transmission structure. BACKGROUND

[0002] In order to meet the demand of rear passenger in different sitting posture and lying posture to the foot comfort support, the front seat rear side is equipped with the foot support plate and becomes the important measure of improving the riding comfort. At present, the arrangement of automobile seat foot support plate on the market mainly presents the following two ways:

[0003] I. The foot support plate is arranged in the drawer form under the seat frame, when using, the foot support plate can be slid back to provide for the rear passenger. However, the arrangement form has the obvious disadvantage. On the one hand, it will occupy the space below the front seat, causes the activity space of rear passenger's foot to be limited, greatly influences the stretchability of riding. On the other hand, since the foot support plate cannot realize the angle adjustment on the structure, the comfort is poor.

[0004] II. The foot support plate is rotatably installed at the rear side of the front seat backrest, realizes the rotary connection between the foot support plate and the backrest through the swan neck rod, and when using, the foot support plate is expanded outwardly. But this installation mode also has the problem that cannot be ignored. When the foot support plate is opened, the exposed swan neck rod not only destroys the appearance of the whole seat, but also in the actual riding process, the passenger is easy to accidentally touch the swan neck rod, causes the interference, brings the inconvenience to the passenger even potential safety hazard. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a automobile seat footrest transmission structure, which is rotatably installed at the rear side of the backrest, and has the advantages of compact structure and good appearance.

[0006] To achieve the above object, the utility model technical scheme is as follows:

[0007] A kind of automobile seat footrest transmission structure, including backrest framework and footrest framework, its key is that: the inner end of the footrest framework is equipped with rotating shaft, the rotating shaft both ends are rotatably arranged in the lower part of the backrest framework rear side, the rotating shaft one end is fixed with second gear, the backrest framework is equipped with first gear meshing with second gear, and drive mechanism for driving the rotation of the first gear;

[0008] The drive mechanism works, under the transmission effect of first gear and second gear, the rotating shaft can be rotated, to realize the footrest framework in the lower part of the backrest framework rear side overturning movement.

[0009] With the above structure, through the meshing transmission of the first gear and the second gear, the driving mechanism can accurately and efficiently transmit power to the rotating shaft, ensuring the stability of the rotation of the rotating shaft, so that the footrest framework can remain stable during folding and unfolding.

[0010] As preferred, the lower inner side of the backrest framework is provided with a mounting bracket, the mounting bracket at least partially protrudes from the rear side of the backrest framework, and the two ends of the rotating shaft are rotatably supported on the part of the mounting bracket protruding from the rear side of the backrest framework. With the above structure, the stability of the rotating installation of the footrest framework can be ensured.

[0011] As preferred, the driving mechanism includes a power source and a rocker arm, one end of the rocker arm is fixedly connected to the first gear, and the power source is used to drive the rocker arm to swing around the center of rotation of the first gear to drive the first gear to rotate. With the above structure, the rocker arm is connected to the first gear, which has the advantages of simple connection and high efficiency. The power source drives the rocker arm to swing, which in turn drives the first gear to rotate, and further drives the footrest framework to rotate.

[0012] As preferred, the power source is a push rod motor, one end of which is rotatably connected to the backrest framework, and the other end is rotatably connected to the end of the rocker arm away from the first gear. With the above structure, the push rod motor can drive the rocker arm to swing around the center of rotation of the first gear.

[0013] As preferred, the second gear is a cylindrical gear, one side of the first gear is provided with an arc-shaped tooth portion meshing with the cylindrical gear, and one end of the rocker arm is fixedly welded to the side of the first gear away from the arc-shaped tooth portion. With the above structure, the first gear is designed with an arc-shaped tooth portion, which, compared to a complete cylindrical gear, effectively reduces the overall size and weight of the gear while meeting the transmission requirements, and reduces the occupied space in the connection with the rocker arm, making the overall mechanism more compact.

[0014] As preferred, the push rod motor is arranged on the inner side of the backrest framework along the height direction of the backrest. With the above structure, it has the advantages of reasonable layout and compactness, and does not occupy too much space on the inner side of the backrest framework, which ensures the effective operation of the driving mechanism and does not affect the layout of other components in the backrest.

[0015] As preferred, the first gear and the second gear are rotatably arranged on one side of the mounting bracket, the second gear is fixedly connected with the end of the rotating shaft through a fastener, and the fastener penetrates the mounting bracket and is rotatably supported on the mounting bracket. With the above structure, the stability of the fixed connection of the second gear and the rotating shaft can be improved.

[0016] As preferred: the first gear and the second gear are provided with a retainer between the side away from the mounting bracket. With the above structure, the retainer can ensure that the first gear and the second gear are always in meshing state.

[0017] As preferred: the first gear is rotatably supported between the mounting bracket and the retainer through a first pin shaft. With the above structure, the effect of stable installation and flexible rotation is achieved, and the compact structure layout is ensured.

[0018] As preferred: the second gear is rotatably connected with the retainer through a second pin shaft. With the above structure, the stable installation of the second gear is achieved.

[0019] Compared with the prior art, the automobile seat foot pedal transmission structure has the following beneficial effects:

[0020] 1. The automobile seat foot pedal transmission structure provided by the utility model can accurately and efficiently transmit power to the rotating shaft through the meshing transmission of the first gear and the second gear, ensures the stability of the rotating shaft rotation, and makes the foot pedal keep stable during folding and unfolding. On the other hand, the rotating shaft is rotatably installed at the lower part of the backrest framework rear side, and the driving mechanism is arranged at the inboard side of the backrest framework, so that the space of the backrest framework is reasonably utilized, the appearance of the seat and the transmission function of the foot pedal are considered at the same time without occupying the space in the car, and the structure is compact and the appearance is integral.

[0021] 2. The automobile seat foot pedal transmission structure provided by the utility model is arranged in the inboard of the backrest framework along the height direction of the backrest, and the structure of the push rod motor and the rocker arm is compact, so that the inboard side space of the backrest framework is not excessively occupied, the effective operation of the driving mechanism is ensured, and the layout of other components in the backrest is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the automobile seat foot pedal transmission structure;

[0023] Figure 2 It is another structure schematic view of the automobile seat foot pedal transmission structure;

[0024] Figure 3 It is a sectional view of the automobile seat foot pedal transmission structure;

[0025] Figure 4 It is a partial top view of the automobile seat foot pedal transmission structure;

[0026] Figure 5 It is a partial schematic view of the automobile seat foot pedal transmission structure hidden behind the backrest framework 1;

[0027] Figure 6 It is a sectional view of the foot pedal framework 2;

[0028] Figure 7 The left view of the car seat foot pedal transmission structure in the folded state of the foot pedal frame 2;

[0029] Figure 8 This is a left view of the car seat foot pedal transmission structure in the unfolded state of the foot pedal frame 2. Detailed Implementation

[0030] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0031] like Figure 1 As shown, a car seat foot pedal transmission structure includes a backrest frame 1 and a foot pedal frame 2. The foot pedal frame 2 has a rotating shaft 21 at its inner end, and both ends of the rotating shaft 21 are rotatably mounted on the lower rear side of the backrest frame 1. (Combined with...) Figure 4 As shown, a second gear 3 is fixedly mounted at one end of the rotating shaft 21, and a first gear 4 is rotatably mounted on the backrest frame 1, which meshes with the second gear 3. A drive mechanism 5 is also provided on the backrest frame 1, which can drive the first gear 4 to rotate. When the drive mechanism 5 operates, under the transmission action of the first gear 4 and the second gear 3, it can drive the rotating shaft 21 to rotate, thereby realizing the flipping movement of the footrest frame 2 on the lower rear side of the backrest frame 1.

[0032] Based on the above structural design, through the meshing transmission of the first gear 4 and the second gear 3, the drive mechanism 5 can accurately and efficiently transmit power to the rotating shaft 21, ensuring the smooth rotation of the rotating shaft 21 and enabling the footrest frame 2 to remain stable during folding and unfolding. On the other hand, by rotatably mounting the rotating shaft 21 on the lower rear side of the backrest frame 1 and setting the drive mechanism 5 on the backrest frame 1, the space of the backrest frame 1 is rationally utilized. Without occupying interior space, it can take into account both the appearance of the seat and the transmission function of the footrest, and has the advantages of compact structure and good overall appearance.

[0033] Furthermore, by Figure 1 As can be seen, the foot pedal frame 2 also includes a connecting rod 22, one end of which is fixedly welded to the rotating shaft 21, and the other end extends radially outward along the rotating shaft 21. (Reference) Figure 7 When not in use, the footrest frame 2 is folded behind the backrest frame 1. For use, refer to... Figure 8 The foot pedal frame 2 unfolds downwards by driving the rotating shaft 21 to rotate. In this embodiment, there are at least two sets of connecting rods 22. The connecting rods 22 provide a stable foundation for the installation of the foot pedal, enhance the stability of the connection between the foot pedal and the rotating shaft 21, and provide the user with more stable foot pedal support.

[0034] Please refer to Figure 3The driving mechanism 5 comprises a power source 51 and a rocker arm 52, one end of the rocker arm 52 is fixedly connected to the first gear 4, and the power source 51 can drive the rocker arm 52 to swing around the rotation center of the first gear 4 to drive the first gear 4 to rotate. The power source 51 can accurately and stably output power, regardless of being an electric motor or a hydraulic device. The rocker arm 52 is connected to the first gear 4, which has the advantages of simple connection and high efficiency. The power source 51 drives the rocker arm 52 to swing, which can drive the first gear 4 to rotate, and further drive the pedal frame 2 to rotate.

[0035] Specifically, referring to Figure 3 In this embodiment, the power source 51 is a push rod motor, one end of which is rotatably connected to the backrest frame 1, and the other end is rotatably connected to one end of the rocker arm 52 away from the first gear 4. The push rod motor can drive the rocker arm 52 to swing around the rotation center of the first gear 4.

[0036] Further, the push rod motor has a push rod 511 that can be raised and lowered, and one end of the rocker arm 52 away from the first gear 4 is rotatably connected to the lower end of the push rod 511. The upward and downward movement of the push rod 511 can drive the first gear 4 to rotate under the linkage action of the rocker arm 52. In this structure, the push rod motor has the technical advantages of simple and accurate control and stable operation. At the same time, the push rod motor is arranged on the inner side of the backrest frame 1 along the height direction of the backrest, and the structure of the push rod motor and the rocker arm 52 is relatively compact, which does not occupy too much space on the inner side of the backrest frame 1, which not only ensures the effective operation of the driving mechanism 5, but also does not affect the layout of other components in the backrest.

[0037] From Figure 3 It can be seen that the second gear 3 is a cylindrical gear, the first gear 4 is provided with an arc-shaped tooth portion 41 on one side in the radial direction, and one end of the rocker arm 52 is fixedly welded on the side of the first gear 4 away from the arc-shaped tooth portion 41. The first gear 4 is designed with the arc-shaped tooth portion 41, which effectively reduces the overall size and weight of the gear while meeting the transmission requirements, and reduces the occupied space in the connection with the rocker arm 52, making the overall mechanism more compact.

[0038] Further, as Figure 5 shown, in this embodiment, the lower end of the push rod 511 is rotatably mounted with a connecting branch 512, which is perpendicular to the push rod 511 and extends outward in the radial direction of the push rod 511, and the extension end of the connecting branch 512 is fixedly connected to one end of the rocker arm 52 away from the first gear 4. When the push rod 511 of the push rod motor moves up and down, it can accurately transmit power to the rocker arm 52 through the connecting branch 512.

[0039] Combined Figure 1 and Figure 2As shown, in order to ensure the stability of the rotating installation of the pedal frame 2, the lower inner sides of both ends of the backrest frame 1 are fixedly provided with mounting brackets 11, at least part of the mounting brackets 11 protrude from the rear side of the backrest frame 1, and the two ends of the rotating shaft 21 are rotatably supported on the part of the two mounting brackets 11 protruding from the rear side of the backrest frame 1. Specifically, the front end of the mounting bracket 11 is fixed on the front side of the backrest frame 1 by bolts, the rear part of the mounting bracket 11 is fixed on the bottom of the backrest frame 1 by bolts, the mounting bracket 11 has an extension part 111 protruding from the rear side of the backrest frame 1, and the two ends of the rotating shaft 21 are rotatably connected to the extension parts 111 of the two mounting brackets 11. In this way, a stable triangular frame is formed between the mounting bracket 11 and the backrest frame 1, which enhances the overall strength and stability of the backrest frame 1, and also improves the stability of the mounting bracket 11 installation, so that the mounting bracket 11 can provide stable support for the rotating shaft 21 to ensure that the rotating shaft 21 can rotate smoothly.

[0040] By Figure 1 It can be seen that the connecting rod 22 is arranged between the two mounting brackets 11, and the first gear 4 and the second gear 3 are rotatably arranged on the outer side of one of the mounting brackets 11, so as to separate the mounting bracket 11 and the second gear 3, and ensure the appearance and overall structure of the seat. Referring to Figure 6 , the second gear 3 is fixedly connected to the end of the rotating shaft 21 by a fastener a. The extension part 111 is provided with a connecting through hole 112, one end of the fastener a is fixedly connected to the end of the rotating shaft 21 by bolts, and the other end of the fastener a penetrates through the connecting through hole 112 and is fixedly connected to the second gear 3. The fastener a is rotatably supported on the connecting through hole 112 by a bushing a1. In this way, the stability of the fixed connection between the second gear 3 and the rotating shaft 21 can be improved.

[0041] Please refer to Figure 4 and 5 , a retaining frame 6 is arranged between the side of the first gear 4 and the second gear 3 away from the mounting bracket 11, which can ensure that the first gear 4 and the second gear 3 are always in meshing state.

[0042] Specifically, referring to Figure 4 and Figure 5 , the first gear 4 is rotatably supported between the mounting bracket 11 and the retaining frame 6 by a first pin shaft b. The second gear 3 is rotatably connected to the retaining frame 6 by a second pin shaft c.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present application, and those skilled in the art can make various similar expressions under the inspiration of the present application without violating the purpose and claims of the present application. Such changes fall within the scope of the present application.

Claims

1. A drive structure of a footrest of an automobile seat, comprising a backrest framework (1) and a footrest framework (2), characterized in that: The inner end of the footrest frame (2) is provided with a rotating shaft (21), the two ends of the rotating shaft (21) are rotatably arranged at the lower part of the rear side of the backrest frame (1), one end of the rotating shaft (21) is fixedly provided with a second gear (3), the backrest frame (1) is provided with a first gear (4) engaged with the second gear (3), and a driving mechanism (5) for driving the rotation of the first gear (4). The driving mechanism (5) works, and under the transmission action of the first gear (4) and the second gear (3), the rotating shaft (21) can be rotated to realize the turnover movement of the footrest frame (2) at the lower part of the rear side of the backrest frame (1).

2. The automobile seat footrest transmission structure according to claim 1, characterized by: The lower inner side of the backrest frame (1) is provided with a mounting bracket (11), the mounting bracket (11) at least partially protrudes from the rear side of the backrest frame (1), and the two ends of the rotating shaft (21) are rotatably supported on the part of the mounting bracket (11) protruding from the rear side of the backrest frame (1).

3. The automobile seat footrest transmission structure according to claim 1, characterized by: The driving mechanism (5) includes a power source (51) and a rocker arm (52), one end of the rocker arm (52) is fixedly connected to the first gear (4), and the power source (51) is used to drive the rocker arm (52) to swing around the rotation center of the first gear (4) as a fulcrum to drive the rotation of the first gear (4).

4. The automobile seat footrest transmission structure according to claim 3, characterized by: The power source (51) is a push rod motor, one end of which is rotatably connected to the backrest frame (1), and the other end is rotatably connected to the end of the rocker arm (52) away from the first gear (4).

5. The automobile seat footrest transmission structure according to claim 4, characterized by: The second gear (3) is a cylindrical gear, one side of the first gear (4) is provided with an arc-shaped tooth part engaged with the cylindrical gear, and one end of the rocker arm (52) is fixedly welded to the side of the first gear (4) away from the arc-shaped tooth part.

6. The automobile seat footrest transmission structure according to claim 4, characterized by: The push rod motor is arranged inside the backrest frame (1) along the backrest height direction.

7. The automobile seat footrest transmission structure according to claim 2, characterized by: The first gear (4) and the second gear (3) are rotatably arranged on one side of the mounting bracket (11), the second gear (3) and the end of the rotating shaft (21) are fixedly connected through a fastener (a), the fastener (a) penetrates the mounting bracket (11) and is rotatably supported on the mounting bracket (11).

8. The automobile seat footrest transmission structure according to claim 7, characterized by: The first gear (4) and the second gear (3) are rotatably supported between the mounting bracket (11) and the retaining frame (6) through a first pin shaft (b).

9. The automobile seat footrest transmission structure according to claim 8, characterized by: The first gear (4) is rotatably supported between the mounting bracket (11) and the retaining frame (6) through a first pin shaft (b).

10. The automobile seat footrest transmission structure according to claim 8, characterized by: The second gear (3) is rotatably connected with the retaining frame (6) through a second pin shaft (c).

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