Universal foot support device

Abstract

The utility model discloses a universal foot support device which comprises a base shaft, foot support supporting rods symmetrically and fixedly installed on the base shaft, a first installation support and a second installation support which are rotatably matched with the two ends of the base shaft, and a driving assembly which is installed on the second installation support and drives the base shaft to rotate. Shaft holes matched with the basic shaft are formed in the first installation support and the second installation support, the two shaft holes are matched to form a rotating shaft position, and the basic shaft is installed on the rotating shaft position and can freely rotate in the circumferential direction. A limiting outer sleeve is mounted on the first mounting bracket, a limiting inner sleeve relatively matched with the limiting outer sleeve is mounted at a base end opposite to the first mounting bracket and matched with the first mounting bracket, and the limiting outer sleeve and the limiting inner sleeve are matched through circumferentially opposite clamping structures, so that the limiting outer sleeve and the limiting inner sleeve only have circumferential degree of freedom within a limited range. The device is helpful for overcoming the defects in the prior art, so that the function expansion of the seat is simpler and more efficient, and greater economic and practical values are brought to manufacturers and consumers.

Description

Technical Field

[0001] This application relates to the field of automotive seats, and particularly to a universal footrest device. Background Art

[0002] With the rapid development of the automotive industry, consumers have put forward higher requirements for the comfort of seats. Especially during long-distance driving or riding, the comfortable design of seats becomes particularly important. To enhance the riding experience, many automobile manufacturers have started to incorporate footrest functions into seat designs. This design can help passengers relieve leg fatigue during long rides. However, most of the current seats with footrest functions on the market require a re-design of the seat frame structure. The newly designed frame must support the installation and use of the footrest, which undoubtedly increases the complexity of seat design.

[0003] Existing seats with footrests usually have to make major modifications to the overall seat frame due to the special requirements of the footrest device. Especially for seat products that have been mass-produced, the existing production lines, molds, and seat frames cannot directly accommodate the addition of this new function. Often, it is necessary to start from scratch for re-design, manufacturing, and debugging. This process not only consumes time and costs but also affects production capacity and the upgrade of existing products. For many seat manufacturers who hope to add footrest functions to existing products, this requirement to re-design the frame greatly restricts the flexibility of products and affects the efficiency of production lines, resulting in underutilization of existing resources.

[0004] This situation has led to an urgent need in the industry for a universal footrest device that can be compatible with the existing seat frame structure and does not require major modifications to the seat frame. If a footrest device can be developed that does not require re-designing the seat frame and can be directly installed and used on existing seats, it can not only save a large amount of design and manufacturing costs but also more flexibly achieve product upgrades, increase seat comfort, and at the same time improve the utilization rate of existing production lines and molds.

[0005] Therefore, developing a device that can achieve the footrest function without changing the existing seat frame not only meets market demands but also provides great convenience for seat design and manufacturing. Summary of the Utility Model

[0006] The purpose of this application aims to at least overcome one deficiency existing in the prior art, and provides a universal footrest device. This device helps to solve the deficiencies in the prior art, making the function expansion of seats simpler and more efficient, and bringing greater economic and practical value to manufacturers and consumers.

[0007] To achieve the above object, the present application discloses a general footrest device, which includes a base shaft, footrest support rods symmetrically and fixedly installed on the base shaft, a first mounting bracket and a second mounting bracket rotatably engaged with both ends of the base shaft, and a driving assembly installed on the second mounting bracket and driving the base shaft to rotate. Among them, the first mounting bracket and the second mounting bracket are provided with shaft holes that cooperate with the base shaft, and the two shaft holes cooperate to form a rotation axis position, and the base shaft is installed on the rotation axis position and can rotate freely in the circumferential direction; a limit outer sleeve is installed on the first mounting bracket. Relatively, a limit inner sleeve that cooperates with the limit outer sleeve is installed on the base end that cooperates with the first mounting bracket. The limit outer sleeve and the limit inner sleeve are cooperated through a circumferentially opposite clamping structure, so that there is only a circumferential degree of freedom within a limited range between the limit outer sleeve and the limit inner sleeve; a sector gear connected and cooperated with the driving assembly is sleeved on one end of the base shaft that cooperates with the second mounting bracket. Relatively, the driving assembly is provided with a driving gear that meshes with the sector gear. By driving the sector gear to rotate with the driving assembly, the base shaft is synchronously rotated; two torsion springs connected and cooperated with the footrest support rods are sleeved on the base shaft. One ends of the two torsion springs are circumferentially and radially constrained by the limb support bracket, and the other ends are connected to an external mechanism to provide a reset after the base shaft rotates through the torsion springs; a plastic ring sleeve is installed at the shaft hole position of the mounting bracket, and the plastic ring sleeve is in direct contact with the base shaft to reduce wear and noise, and a groove storing lubricating grease is provided along the circumferential direction on the outer ring surface of the plastic ring sleeve.

[0008] In some embodiments, the base shaft is a hollow shaft.

[0009] In some embodiments, the driving assembly is installed on the second mounting bracket through a third mounting bracket, and the driving assembly is a motor.

[0010] In some embodiments, a sleeve hole for sleeving the base shaft is provided at the tail end of the footrest support rod, and the footrest support bracket and the base shaft are fixedly connected through at least one detachable radial locking pin.

[0011] In some embodiments, at least one mounting hole for installation is provided on the first mounting bracket and the second mounting bracket.

[0012] In some embodiments, a spring sleeve for protecting the torsion spring is provided on the torsion spring.

[0013] In some embodiments, the length of the footrest support rod is telescopically adjustable.

[0014] Compared with the prior art, the present application has at least the following beneficial effects:

[0015] 1. Improve the comfort of the seat: Through the flexible support of the footrest support rod, it can effectively relieve the leg fatigue of passengers during long-distance rides, improve the overall comfort, and meet the needs of consumers for high-quality riding experiences.

[0016] 2. High-efficiency installation and reset: The rotational fit design between the base shaft and the mounting bracket, combined with the torsional spring reset function, makes the operation of the footrest device simpler and more convenient. At the same time, it has an automatic reset function, improving the usability.

[0017] 3. Reducing wear and noise: The plastic ring sleeve design in the device can effectively reduce the friction and noise generated during rotation, and stores lubricating grease through grooves, extending the service life of the device, which is suitable for long-term use.

[0018] 4. Flexible adjustment and installation: Through the detachable radial locking pins and the adjustable length design of the footrest strut, manufacturers and consumers can flexibly adjust and install the device according to actual needs, further enhancing the adaptability and versatility of the product.

[0019] The beneficial effects listed above do not exhaust all advantages. Other potential beneficial effects and detailed technical implementation manners will be further revealed in the embodiments or other description parts of this application. Brief Description of the Drawings

[0020] After reading the following specific implementation manners in conjunction with the drawings, various aspects of the present disclosure will be better understood. Sometimes, the positions, dimensions, and ranges of the structures shown in the drawings, etc., do not represent the actual positions, dimensions, and ranges, etc. In the drawings:

[0021] Figure 1 is a schematic structural diagram of an embodiment disclosed in this application.

[0022] Figure 2 is a schematic structural diagram of an embodiment disclosed in this application from another perspective.

[0023] Figure 3 is Figure 2 the sectional structural diagram of A-A in

[0024] Figure 4 is an exploded view of the structure of an embodiment disclosed in this application.

[0025] Figure 5 is a schematic structural diagram of the mating state of the sector gear and the driving gear in an embodiment disclosed in this application.

[0026] Figure 6 is a schematic structural diagram of an embodiment disclosed in this application after being mated with the seat part skeleton. Detailed Description of the Invention

[0027] The present disclosure will be described below with reference to the accompanying drawings, which show several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully explain the protection scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0028] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for clarity, the dimensions of some features may be deformed.

[0029] It should be understood that the terms used in the specification are only for describing specific embodiments and are not intended to limit the present disclosure. All terms used in the specification (including technical terms and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorized specification.

[0030] The singular forms "a", "the", and "said" used in the specification include the plural forms unless clearly specified. The terms "comprising", "including", and "containing" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the related listed items. Embodiment

[0031] As Figures 1-5 shown, this embodiment describes in detail a specific implementation manner of a general footrest device to ensure that those skilled in the art can fully understand and implement the invention. This device is composed of multiple components, including a base shaft 1, a footrest support rod 2, a first mounting bracket 3, a second mounting bracket 4, a drive assembly 5, a limit outer sleeve 6, a limit inner sleeve 7, a sector gear 8, a torsion spring 9, a seat frame 10, and a plastic ring sleeve.

[0032] Specifically, in this embodiment, the base shaft 1 is the core component of the entire device, and the footrest support rods 2 are symmetrically installed at both ends of the base shaft 1 for supporting the legs of passengers. In actual use, the footrest support rods 2 serve as the framework of the footrest, providing effective support for the legs of passengers to ensure that the legs can maintain a comfortable posture during the ride, thereby reducing the fatigue caused by long-term sitting.

[0033] As Figure 6As shown, the base shaft 1 is fixed to the seat frame 10 through the first mounting bracket 3 and the second mounting bracket 4. The first mounting bracket 3 and the second mounting bracket 4 form a rotating shaft position through the shaft hole, and the base shaft 1 is installed in this rotating shaft position, so as to achieve its free circumferential rotation. A driving assembly 5 is provided on the second mounting bracket 4. The driving assembly 5 is matched with the base shaft 1 through a sector gear 8 to control the rotation of the base shaft 1. In addition, a limit outer sleeve 6 is installed on the first mounting bracket 3 and is relatively matched with the limit inner sleeve 7. The rotation range of the base shaft 1 is limited through the clamping structure to ensure the safety and stability of the operation, thereby preventing potential safety hazards caused by exceeding the set angle during the operation.

[0034] More specifically, the driving assembly is fixed to the second mounting bracket 4 through the third mounting bracket 11l.

[0035] The driving assembly 5 drives the base shaft 1 to rotate through the meshing of the driving gear and the sector gear 8. The sector gear 8 is installed at one end of the base shaft 1, and the driving gear is installed on the driving assembly 5. During the driving process, the driving assembly 5 drives the driving gear to rotate through the motor, so that the sector gear 8 and the base shaft 1 rotate synchronously, realizing the unfolding and retracting of the footrest.

[0036] In addition, a torsion spring 9 is sleeved on the base shaft 1. One end of the torsion spring 9 is fixed to the footrest support rod 2, and the other end is connected to an external mechanism (mainly the seat frame 10), which is used to perform a reset operation on the base shaft 1 after the driving stops, ensuring that the footrest automatically returns to the initial position in the non-working state. This reset process is achieved through the elastic potential energy of the torsion spring 9, ensuring the stable reset of the footrest, not only increasing the durability of the device, but also improving the convenience of operation, so that the device maintains high reliability during multiple repeated uses.

[0037] The limit outer sleeve 6 and the limit inner sleeve 7 are matched with each other through the clamping structure. The limit outer sleeve 6 is installed on the first mounting bracket 3, and the limit inner sleeve 7 is installed at the base end of the base shaft 1. The clamping structure between the two is used to limit the rotation angle of the base shaft 1, preventing damage to the device caused by excessive rotation. This design is crucial for controlling the rotational freedom of the base shaft 1 and significantly improves the safety and stability during use.

[0038] In actual operation, the cooperation between the limit inner sleeve 7 and the limit outer sleeve 6 effectively prevents structural damage caused by passengers inadvertently applying excessive torque. This precise limit design ensures that the function of the footrest can be reliably realized within the established range, while also enhancing the overall safety of the device and reducing the risk caused by misoperation.

[0039] In order to further reduce wear and noise during rotation, plastic ring sleeves are sleeved between the base shaft 1 and the shaft holes of the first mounting bracket 3 and the second mounting bracket 4.

[0040] The outer circumferential surface of the plastic ring sleeve is provided with grooves in the circumferential direction for storing lubricating grease, which can effectively reduce friction and extend the service life of the device.

[0041] It should be understood that the plastic ring sleeve is made of a polymer material, which has excellent wear resistance and good self-lubricating characteristics. This not only reduces the maintenance requirements during the long-term use of the device, but also reduces the operating noise of the user, providing a more quiet riding experience. In addition, the storage grooves for the lubricating grease can continuously supply lubrication to ensure that the device can maintain a good operating state under various environmental conditions, effectively improving the use stability and durability of the overall device.

[0042] In practical applications, the drive assembly 5 usually uses an electric motor as the power source. The electric motor drives the rotation of the driving gear, thereby driving the sector gear 8 and the base shaft 1. The selection of the electric motor is crucial. Usually, a high-torque and low-noise DC brushless motor is selected to ensure that the footrest has sufficient power during operation and maintains a relatively quiet working environment. The base shaft 1 is designed with a hollow structure, making it have a lighter mass and higher strength. It can reduce the burden on the overall structure of the seat while ensuring the support strength of the footrest. The hollow structure also has good material utilization rate, reduces material consumption, and enhances the torsional resistance of the structure to ensure the stability of the footrest under stress. In addition, the hollow design is also convenient for internal wiring or other function integration, providing more possibilities for the multifunctionalization of the device.

[0043] The connection between the footrest rod 2 and the base shaft 1 is realized through a sleeve hole and a radial locking pin. The locking pin is designed to be detachable, making the installation and maintenance of the entire footrest device more convenient. This design is very suitable for application scenarios where the seat needs to be functionally upgraded or regularly maintained, especially in a large-scale production environment. The convenience of disassembly and assembly can significantly improve production and maintenance efficiency. This detachable design also provides great convenience for subsequent replacement and repair. Especially when a specific component needs to be replaced, the entire device does not need to be disassembled to complete the replacement.

[0044] As a preferred solution, in specific application scenarios, the length of the footrest rod 2 can be adjusted telescopically to meet the needs of different passengers, thereby improving riding comfort. To achieve this function, the footrest rod 2 is composed of a large rod and a small rod inserted into the large rod, providing a more flexible length adjustment function to ensure that passengers can obtain good leg support in different riding postures. In addition, there is an anti-slip locking device between the large rod and the small rod to prevent the footrest length from changing accidentally due to vibration during vehicle driving, thereby increasing riding safety and comfort.

[0045] Similarly, as a preferred option, the footrest device also has specially designed protection measures for the torsion spring 9. A spring sleeve is installed on the outside of the torsion spring 9 to protect the torsion spring 9 from damage by the external environment and prevent passengers from directly contacting the torsion spring 9 during use, thereby improving the safety of the device. The spring sleeve is made of corrosion-resistant alloy material and can maintain stable performance under various environmental conditions. The spring sleeve not only has a physical protection function, but can also effectively protect the torsion spring 9 in harsh environments such as moisture and salt spray, extending its service life. It is especially suitable for vehicle applications that need to withstand various climatic conditions. The design of the spring sleeve not only ensures the stability of the torsion spring function, but also improves the durability of the overall device, enabling it to adapt to more harsh usage environments.

[0046] During installation and use, the mounting holes on the first mounting bracket 3 and the second mounting bracket 4 allow the entire device to be easily fixed to the seat frame 10. Especially when upgrading existing seats, the use of these mounting holes can simplify the installation process, eliminating the need for major modifications to the existing seat frame 10, thereby saving cost and time and improving the utilization of production lines and molds. This design fully considers the actual needs of seat manufacturers in the process of product upgrades. Through its high compatibility and adaptability, it provides manufacturers with a flexible solution and minimizes interference with the original production process. This standardized and modular design concept not only makes the device more adaptable, but also enables rapid integration and deployment in different vehicle models or seat styles, improving the device's market adaptability.

[0047] The device can realize the footrest function without changing the structure of the existing seat frame 10, thereby significantly improving the comfort of riding. During long rides or long-distance driving, passengers can control the expansion and retraction of the footrest through the drive component 5, so that the legs are effectively supported and fatigue is relieved. Especially when traveling long distances, leg comfort is crucial to reducing fatigue. The presence of the footrest can effectively disperse leg pressure and promote blood circulation, thereby reducing leg swelling and fatigue. The design of the limiting outer sleeve 6 and the limiting inner sleeve 7 allows the footrest to have limited freedom during use, preventing passengers from accidentally causing excessive rotation of the footrest and causing safety hazards. In addition, this limiting design can also prevent mechanical damage to the device due to violent operation, significantly improving the service life and safety performance of the device. Through this precise limiting mechanism, the device can maintain stable operation in different usage environments, ensuring that it performs at its best in diverse usage requirements.

[0048] In summary, through the detailed description of each component in this embodiment, including its design principle, material selection, working principle, and the connection and cooperation between components, the implementation method of the entire universal footrest device is ensured to be clear and specific, facilitating those skilled in the art to implement this invention. This device has the advantages of strong adaptability, simple installation, high stability, effective noise reduction function, and significantly improved riding experience, meeting the urgent needs of the current market for seat comfort and functionality.

[0049] Although the exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included within the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. A general footrest device, characterized in that, The device includes: a base shaft, footrest support rods symmetrically and fixedly installed on the base shaft, a first mounting bracket and a second mounting bracket rotatably engaged with both ends of the base shaft, and a driving assembly installed on the second mounting bracket and driving the base shaft to rotate. Among them, the first mounting bracket and the second mounting bracket are provided with shaft holes engaged with the base shaft, and the two shaft holes cooperate to form a rotation axis position, and the base shaft is installed on the rotation axis position and can freely rotate circumferentially; a limiting outer sleeve is installed on the first mounting bracket. Relatively, a limiting inner sleeve engaged with the limiting outer sleeve is installed on the base end engaged with the first mounting bracket. The limiting outer sleeve and the limiting inner sleeve are engaged through a circumferentially opposite clamping structure, so that there is only a circumferential degree of freedom within a limited range between the limiting outer sleeve and the limiting inner sleeve; a sector gear connected and engaged with the driving assembly is sleeved on one end of the base shaft engaged with the second mounting bracket. Relatively, a driving gear engaged with the sector gear is provided on the driving assembly. By driving the sector gear to rotate through the driving assembly, the base shaft is synchronously rotated; two torsion springs connected and engaged with the footrest support rods are sleeved on the base shaft. One ends of the two torsion springs are circumferentially and radially constrained by the limb support bracket, and the other ends are connected to an external mechanism to provide reset after the base shaft rotates through the torsion springs; a plastic ring sleeve is installed at the shaft hole position of the mounting bracket. The plastic ring sleeve is in direct contact with the base shaft to reduce wear and noise, and a groove storing lubricating grease is provided on the outer circumferential surface of the plastic ring sleeve along the circumference.

2. The general footrest device as described in claim 1, characterized in that: The base shaft is a hollow shaft.

3. A general footrest device as described in claim 1, characterized in that: The driving assembly is installed on the second mounting bracket through a third mounting bracket, and the driving assembly is a motor.

4. A general footrest device as described in claim 1, characterized in that: A sleeve hole for sleeving into the base shaft is provided at the tail end of the footrest support rod, and the footrest bracket and the base shaft are fixedly connected through at least one detachable radial locking pin.

5. A general footrest device as described in claim 1, characterized in that: At least one mounting hole for installation is provided on the first mounting bracket and the second mounting bracket.

6. A general footrest device as described in claim 1, characterized in that: A spring sleeve for protecting the torsion spring is provided on the torsion spring.

7. A general footrest device as described in claim 1, characterized in that: The length of the footrest support rod is adjustable in extension and retraction.

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