A continuous adjustment power handrail based on a concentric angle adjuster and a vehicle seat

Abstract

The application discloses a kind of continuity adjustment electric handrails based on concentric angle adjuster, it is related to the technical field of automobile seat, including handrail motor, synchronous rod, fixed support, concentric angle adjuster, moving disc connecting plate, pivot connecting plate, handrail pivot, handrail body;Concentric angle adjuster includes fixed disc and moving disc, fixed disc is connected to seat back skeleton by fixed support;Moving disc is connected with pivot connecting plate by moving disc connecting plate, pivot connecting plate is fixed with handrail pivot, handrail pivot end connects handrail body;Handrail motor is connected with synchronous rod, and synchronous rod drives concentric angle adjuster to run, and the rotary torque of moving disc is sequentially transmitted to handrail pivot by moving disc connecting plate, pivot connecting plate to drive handrail body to realize continuity adjustment.The application realizes stepless continuous smooth adjustment, has excellent mechanical self-locking and high load bearing capacity, eliminates the problems such as motor holding torque dependence, gear damage and adjustment frustration in traditional scheme.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more particularly to a continuously adjustable electric armrest and vehicle seat based on a concentric angle adjuster. Background Technology

[0002] With the continuous development of the automotive industry, passengers' demands for seat comfort are increasing. As an important component to enhance the riding experience, the performance of electrically adjustable armrests directly affects the user's experience.

[0003] Currently, most existing electric armrests for car seats use gear-plate transmission or direct motor drive. However, these traditional solutions have two significant drawbacks: First, true high-load self-locking cannot be achieved. In gear-plate transmission systems, when the handrail is subjected to downward pressure from passengers, it often relies on the motor's own holding torque to maintain its position. Prolonged stress can easily lead to motor overheating and even gear breakage, severely affecting the system's reliability and lifespan.

[0004] Second, the adjustment process has a stepped feel. Due to the inherent characteristics of gear transmission, there is backlash and step difference during the adjustment process, making it difficult to achieve extremely smooth, continuous stepless adjustment, which affects ergonomic comfort.

[0005] Therefore, there is an urgent need for a handrail that can provide continuous and smooth adjustment, has strong mechanical self-locking capability, and can withstand high-intensity downward pressure loads. Summary of the Invention

[0006] In view of the above-mentioned problems in the prior art, the present invention provides a continuously adjustable electric armrest and vehicle seat based on a concentric angle adjuster, which can achieve stepless continuous smooth adjustment and has excellent mechanical self-locking and high load-bearing capacity.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A continuously adjustable electric armrest based on a concentric angle adjuster includes: an armrest motor, a synchronizing rod, a fixed bracket, a concentric angle adjuster, a moving plate connecting plate, a rotating shaft connecting plate, an armrest rotating shaft, and an armrest body. The concentric angle adjuster includes a fixed plate and a moving plate. The fixed plate is fixedly connected to the seat back frame via the fixed bracket as a static reference. The moving plate is fixedly connected to the rotating shaft connecting plate via the moving plate connecting plate. The rotating shaft connecting plate is fixedly engaged with the armrest rotating shaft, and the end of the armrest rotating shaft is connected to the armrest body. The power output end of the armrest motor is connected to the synchronizing rod, which acts as an input shaft to drive the concentric angle adjuster. The moving plate rotates smoothly relative to the fixed plate. The rotational torque of the moving plate is transmitted sequentially through the moving plate connecting plate and the rotating shaft connecting plate to the armrest rotating shaft, thereby driving the armrest body to achieve continuous adjustment.

[0008] Preferably, the concentric angle adjuster further includes a central cam, a locking block, and a spring. The fixed plate is provided with a toothed ring. After the spring pushes the central cam to open the locking block outward, the locking block engages with the toothed ring of the fixed plate.

[0009] Preferably, the armrest pivot has a square cross-section, and the pivot connecting plate has a square hole inside that matches the square cross-section, so as to realize rigid torque transmission through multi-faceted contact.

[0010] Preferably, the fixed bracket is provided with a limiting part, and the moving plate connecting plate is provided with a claw. The claw is limited by the limiting part to prevent the moving plate connecting plate from rotating excessively.

[0011] Preferably, two limiting parts are symmetrically arranged on the fixed bracket, and one claw is provided.

[0012] A vehicle seat including a continuously adjustable electrically operated armrest based on a concentric adjuster as described in any of the preceding claims.

[0013] By adopting the above-described technical solution, the beneficial effects of the present invention compared with the prior art are as follows: 1. The present invention provides a continuously adjustable electric armrest and vehicle seat based on a concentric angle adjuster, which realizes true stepless continuous adjustment. It abandons the traditional gear plate or motor direct drive solution and innovatively introduces the core mechanism of the seat angle adjuster into the armrest transmission system. Relying on the internal transmission characteristics of the concentric angle adjuster, the rotation of the motor is converted into an extremely high-precision angle change, eliminating the jerking and range of traditional gear transmission. Passengers can accurately suspend the armrest at any angle according to their own needs, which greatly improves the ergonomic comfort. 2. This invention relates to a continuously adjustable electric armrest and vehicle seat based on a concentric angle adjuster, which possesses excellent mechanical self-locking and load-bearing capacity, and innovatively utilizes the inherent "irreversible" self-locking characteristic of the angle adjuster. When an external load (such as an occupant pressing their entire weight onto the armrest) is applied to the armrest, the load torque is transmitted to the moving plate via the armrest pivot, pivot connecting plate, and moving plate connecting plate. The force is directly neutralized by the mechanical structure of the angle adjuster and transmitted to the fixed plate and backrest frame. The motor does not need to output any holding torque, completely eliminating the risks of mechanism slippage, gear damage, and motor burnout. 3. The present invention provides a continuously adjustable electric armrest and vehicle seat based on a concentric angle adjuster, which has high rigidity torque transmission. The transmission end adopts a rigid connection scheme of "connecting plate + square shaft". The multi-faceted contact characteristics of the square shaft effectively avoid slippage and stress concentration under high torque transmission, ensuring the structural stability and long service life of the entire transmission chain under high load. Attached Figure Description

[0014] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings. In the drawings: Figure 1 This is a perspective view of the present invention; Figure 2 This is another perspective view of the present invention; Figure 3 This is an exploded view of the present invention; The reference numerals in the attached drawings include: armrest motor 1, synchronizing rod 2, fixed bracket 3, limiting part 31, concentric angle adjuster 4, moving plate connecting plate 5, pawl 51, rotating shaft connecting plate 6, square hole 61, armrest rotating shaft 7, armrest body 8, seat back frame 9. Detailed Implementation

[0015] The technical solutions of various embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. It should be pointed out that all accompanying drawings are exemplary representations. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0019] Reference Figures 1 to 3 , Figure 1 This is a perspective view of the present invention. Figure 2 This is another perspective view of the present invention. Figure 3 This is an exploded view of the present invention. The present invention provides a continuously adjustable electric armrest based on a concentric angle adjuster, comprising: an armrest motor 1, a synchronizing rod 2, a fixed bracket 3, a concentric angle adjuster 4, a moving plate connecting plate 5, a rotating shaft connecting plate 6, an armrest rotating shaft 7, and an armrest body 8; the concentric angle adjuster 4 includes a fixed plate (not shown) and a moving plate (not shown). The fixed plate is fixedly connected to the seat back frame 9 via the fixed bracket 3 as a static reference; the moving plate is fixedly connected to the rotating shaft connecting plate 6 via the moving plate connecting plate 5, and the rotating shaft connecting plate 6 is fixedly engaged with the armrest rotating shaft 7. The end of the armrest rotating shaft 7 is connected to the armrest body 8; the power output end of the armrest motor 1 is connected to the synchronizing rod 2, and the synchronizing rod 2 serves as an input shaft to drive the concentric angle adjuster 4 to rotate. The moving plate rotates smoothly relative to the fixed plate, and the rotational torque of the moving plate is transmitted sequentially through the moving plate connecting plate 5 and the rotating shaft connecting plate 6 to the armrest rotating shaft 7, thereby driving the armrest body 8 to achieve continuous adjustment.

[0020] In one embodiment, the concentric angle adjuster 4 further includes a central cam (not shown), a locking block (not shown), and a spring (not shown). The fixed plate is provided with a toothed ring (not shown). After the spring pushes the central cam to open the locking block outwards, the locking block engages with the toothed ring on the fixed plate. More specifically, the Mingyang Technology concentric angle adjuster MYJL03D can be used, which internally includes: a fixed plate with an inner toothed ring (fixed to the backrest), a moving plate (connected to the armrest), a central cam, a locking block, and a spring. The tooth pitch of the inner toothed ring on the fixed plate (e.g., 3° ​​interval between each tooth) physically determines the "gear" of the multi-level adjustment of the armrest; self-locking mechanism (hovering lock): in the stationary state, the internal spring pushes the central cam, opening the locking block outwards and tightly engaging it with the inner toothed ring on the fixed plate. The force of the occupant pressing down on the armrest is entirely due to the mechanical meshing of the toothed block and the toothed ring. With its robust design, the motor can achieve high-strength locking without requiring any force. Adjustment and locking (1:1 transmission): Unlocking rotation: When the motor drives the shaft, it first causes the cam to rotate slightly, causing the locking teeth to retract towards the center and disengage from the gear ring. The core component unlocks, and the moving plate rotates synchronously with the input power at a 1:1 ratio, driving the armrest up and down. Locking position: When the drive stops (motor stops or the user releases their hand), the spring instantly pushes the cam back, again opening the locking teeth and precisely engaging them in the corresponding slot on the fixed plate. Each time the armrest passes through a slot, it completes the adjustment and locking of one gear position.

[0021] In one embodiment, the armrest pivot 7 has a square cross-section, and the pivot connecting plate 6 has a square hole 61 inside that mates with the square cross-section, so as to realize rigid torque transmission through multi-faceted contact.

[0022] In one embodiment, the fixed bracket 3 is provided with a limiting part 31, and the moving plate connecting plate 5 is provided with a claw 51. The claw 51 is limited by the limiting part 31 to prevent the moving plate connecting plate 5 from rotating excessively. Preferably, two limiting parts 31 are symmetrically arranged on the fixed bracket 3, and preferably one claw 51 is provided.

[0023] The present invention also provides a vehicle seat, including a continuously adjustable electric armrest based on a concentric adjuster as described above.

[0024] The following will refer to Figures 1 to 3 The working principle of the present invention will be explained.

[0025] During operation, the handrail motor 1 outputs power to the synchronizing rod 2. The synchronizing rod 2 acts as an input shaft, driving the transmission mechanism inside the concentric angle adjuster 4. The minute tooth difference or friction transmission principle within the concentric angle adjuster 4 causes the moving plate to rotate smoothly relative to the fixed plate. The rotational torque of the moving plate is transmitted sequentially through the moving plate connecting plate 5 and the rotating shaft connecting plate 6 to the handrail rotating shaft 7, ultimately driving the handrail body 8 to achieve continuous angle adjustment. When the drive stops, the internal mechanical structure of the concentric angle adjuster 4 automatically locks.

[0026] This invention relates to a continuously adjustable electric armrest and vehicle seat based on a concentric angle adjuster, achieving true stepless continuous adjustment. It abandons traditional gear-plate or direct-drive motor solutions, innovatively introducing the core mechanism of the seat angle adjuster into the armrest transmission system. Relying on the internal transmission characteristics of the concentric angle adjuster, the rotation of the motor is converted into extremely high-precision angle changes, eliminating the jerking and inconsistencies of traditional gear transmissions. Passengers can precisely suspend the armrest at any angle according to their needs, significantly improving ergonomic comfort. This invention also features a continuously adjustable electric armrest and vehicle seat based on a concentric angle adjuster, possessing excellent mechanical self-locking and load-bearing capacity, innovatively utilizing the inherent "irreversible" self-locking characteristic of the angle adjuster. When an external load (such as an occupant pressing their full weight onto the armrest) is applied to the armrest, the load torque is transmitted to the moving plate via the armrest pivot, pivot connecting plate, and moving plate connecting plate. The force is directly neutralized by the adjusting mechanism and transmitted to the fixed plate and backrest frame. The motor does not need to output any holding torque, completely eliminating the risk of mechanism slippage, gear damage, and motor burnout. The present invention provides a continuous adjustable electric armrest and vehicle seat based on a concentric adjusting mechanism, which has high rigidity torque transmission. The transmission end adopts a rigid connection scheme of "connecting plate + square shaft". The multi-faceted contact characteristics of the square shaft effectively avoid slippage and stress concentration under high torque transmission, ensuring the structural stability and long service life of the entire transmission chain under high load.

[0027] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A continuously adjustable electric handrail based on a concentric angle adjuster, characterized in that, include: The armrest motor comprises a synchronizing rod, a fixed bracket, a concentric angle adjuster, a moving plate connecting plate, a rotating shaft connecting plate, an armrest rotating shaft, and an armrest body. The concentric angle adjuster includes a fixed plate and a moving plate. The fixed plate is fixedly connected to the seat back frame via the fixed bracket as a static reference. The moving plate is fixedly connected to the rotating shaft connecting plate via the moving plate connecting plate. The rotating shaft connecting plate is fixedly engaged with the armrest rotating shaft, and the end of the armrest rotating shaft is connected to the armrest body. The power output end of the armrest motor is connected to the synchronizing rod, which acts as an input shaft to drive the concentric angle adjuster. The moving plate rotates smoothly relative to the fixed plate. The rotational torque of the moving plate is transmitted sequentially through the moving plate connecting plate and the rotating shaft connecting plate to the armrest rotating shaft, thereby enabling continuous adjustment of the armrest body.

2. The continuously adjustable electric handrail based on a concentric angle adjuster according to claim 1, characterized in that, The concentric angle adjuster also includes a central cam, a locking block, and a spring. The fixed plate is provided with a toothed ring. After the spring pushes the central cam to open the locking block outward, the locking block engages with the toothed ring of the fixed plate.

3. The continuously adjustable electric handrail based on a concentric angle adjuster according to claim 1, characterized in that, The handrail pivot has a square cross-section, and the pivot connecting plate has a square hole inside that matches the square cross-section to achieve rigid torque transmission through multi-faceted contact.

4. A continuously adjustable electric handrail based on a concentric angle adjuster according to claim 1, characterized in that, The fixed bracket is provided with a limiting part, and the moving plate is provided with a claw. The claw is limited by the limiting part to prevent the moving plate from rotating excessively.

5. A continuously adjustable electric handrail based on a concentric angle adjuster according to claim 4, characterized in that, Two limiting parts are symmetrically arranged on the fixed bracket, and one claw is provided.

6. A vehicle seat, characterized in that, Including a continuously adjustable electric handrail based on a concentric angle adjuster as described in any one of claims 1 to 5.

Images