Seat arm actuation system

Abstract

This utility model discloses a seat armrest drive system, relating to the field of automotive seat technology. The system includes an adjuster, a motor, and a reduction gearbox. The adjuster includes a fixed panel fixedly connected to the fixed armrest frame and an adjuster rotating disk fixedly connected to the movable armrest frame. The reduction gearbox, the motor, and the movable armrest frame are fixed together. The input gear of the reduction gearbox is connected to the output shaft of the motor, and the output gear of the reduction gearbox is directly or indirectly connected to the adjuster rotating disk. This utility model uses a motor and reduction gearbox to drive the movable armrest frame, achieving automatic adjustment of the seat armrest and eliminating manual operation. This significantly improves convenience and comfort, especially for heavier armrests. Furthermore, by aligning the motor axis parallel to the axis of the adjuster rotating disk, the system structure becomes more compact, requiring less installation space.

Description

Technical Field

[0001] This utility model relates to the field of seat technology, specifically to an automatically adjustable seat armrest drive system. Background Technology

[0002] With the continuous progress of society, all industries are moving towards electrification and intelligentization. In the automotive industry, more and more car manufacturers are researching electric drive mechanisms for the opening and closing of seat armrests to meet the needs of modern consumers. The market demand for electric rear center armrests in family cars is becoming increasingly urgent. However, current rear center armrests in family cars on the market mainly suffer from the following drawbacks:

[0003] 1. Currently, the rear center armrest of passenger cars is manually operated, which is inconvenient for consumers to operate, especially for heavy armrests;

[0004] 2. The rear manual center armrest has a zipper in the closed position, which needs to be manually unlocked to open;

[0005] 3. Consumers of different heights have different requirements for the stopping angle of the handrail. Currently, the manually operated handrail can only be locked at the maximum opening position and cannot be stopped at any position.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] Purpose of the utility model: The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a seat armrest drive system that enables automatic adjustment of the seat armrest, eliminating the need for manual operation. This significantly improves the convenience and comfort of use, especially for heavy armrests.

[0008] To solve the above-mentioned technical problems, this utility model discloses a seat armrest drive system. The system includes an adjuster, a motor, and a gearbox. The adjuster includes a fixed panel fixedly connected to the fixed armrest frame and an adjuster rotating disk fixedly connected to the movable armrest frame. The gearbox, the motor, and the movable armrest frame are fixed together. The input gear of the gearbox is connected to the output shaft of the motor, and the output gear of the gearbox is directly or indirectly connected to the adjuster rotating disk.

[0009] Furthermore, the gearbox is configured such that the output shaft of the motor and the axis of the angle adjuster rotating disk are arranged parallel to each other.

[0010] In one embodiment, the system includes a drive shaft, through which the output gear of the reduction gearbox is connected to the rotating disk of the angle adjuster.

[0011] In one embodiment, there are two angle adjusters, namely a left angle adjuster and a right angle adjuster, which are respectively disposed on both sides of the armrest fixing seat frame along its width direction.

[0012] Preferably, the self-locking force of the left angle adjuster and the right angle adjuster is greater than 2500 Nm.

[0013] In one embodiment, the left and right angle adjusters share the drive shaft.

[0014] Specifically, the output gear of the reduction gearbox is provided with a through first connecting hole, and the left angle adjuster rotating disk and the right angle adjuster rotating disk are respectively provided with second connecting holes; the drive shaft and the reduction gearbox are circumferentially limited connected through the first connecting hole, and the two ends of the drive shaft are circumferentially fixed to the second connecting holes of the left angle adjuster and the right angle adjuster, respectively.

[0015] Specifically, the shapes of the first connecting hole and the second connecting hole are square, elliptical, or star-shaped polygons, respectively.

[0016] In one embodiment, the fixed panel and the armrest fixing seat frame are fixedly connected by welding.

[0017] Specifically, the fixed panel is provided with a welding boss, and the handrail fixing seat frame is provided with a through hole. The fixed panel and the handrail fixing seat frame are connected by inserting the welding boss into the through hole and welding.

[0018] More specifically, the welding boss is crescent-shaped, circular, square, or elliptical.

[0019] More specifically, the welding boss is provided in two or more, arranged in a circular array around the rotating disk of the angle adjuster.

[0020] In one embodiment, the gearbox includes a mounting hole with a screw inside, and the mounting hole of the gearbox is connected to the movable handrail frame via the screw.

[0021] Specifically, the mounting hole is a smooth hole or a threaded hole.

[0022] In one embodiment, the wiring harness connection port of the motor includes a Hall signal interface and / or a power interface, which is connected to an external wiring harness.

[0023] In one embodiment, the angle adjuster is a concentric angle adjuster or an eccentric angle adjuster.

[0024] In one embodiment, the system further includes disc retainers for limiting axial movement of the drive shaft, with disc retainers sleeved on both sides of the drive shaft, and the disc retainers respectively engaging with the angle adjusters on the corresponding sides.

[0025] Beneficial effects:

[0026] 1. In this utility model, a motor drives the rear center armrest through a gearbox, eliminating the need for manual operation and improving portability and comfort for consumers, especially for heavy armrests.

[0027] 2. In this utility model, angle adjusters are arranged on both sides of the drive shaft. When the motor is not working, the angle adjuster is operated on the handrail side and has a self-locking function with a self-locking force exceeding 2500Nm. When the handrail is closed, its self-locking function can also replace the manual cable. When the motor is working, the angle adjuster can automatically unlock to complete the opening and closing action of the handrail.

[0028] 3. The motor in this utility model has a memory function, and consumers can adjust the handrail to stop at different angles according to their own needs. When the motor stops at the set opening angle of the handrail, the angle adjuster will lock the handrail system in place. Attached Figure Description

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0030] Figure 1 A schematic diagram of the structure of a seat armrest drive system provided in one embodiment of this utility model. Figure 1 .

[0031] Figure 2 A schematic diagram of the structure of a seat armrest drive system provided in one embodiment of this utility model. Figure 2 .

[0032] Figure 3 This is a schematic diagram of a motor gearbox assembly provided in one embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the structure of an angle adjuster provided in one embodiment of the present invention.

[0034] The reference numerals in the attached drawings are as follows: 100, angle adjuster; 101, left angle adjuster; 102, right angle adjuster; 110, fixed panel; 111, welding boss; 120, angle adjuster rotating disk; 121, second connecting hole; 200, motor; 210, wire harness connection port; 300, gearbox; 310, first connecting hole; 320, fixed mounting hole; 400, drive shaft. Detailed Implementation

[0035] See Figures 1 to 4 The first aspect of the present invention provides a seat armrest drive system, including an adjuster 100, a motor 200, and a gearbox 300. The adjuster 100 includes a fixed panel 110 fixedly connected to the armrest fixed seat frame and an adjuster rotating disk 120 fixedly connected to the movable armrest frame. The gearbox 300, the motor 200, and the movable armrest frame are fixed together. The input gear of the gearbox 300 is connected to the output shaft of the motor 200, and the output gear of the gearbox 300 is directly or indirectly connected to the adjuster rotating disk 120.

[0036] When the motor 200 is not working, the angle adjuster 100 has a self-locking function. When self-locking, the angle adjuster rotating disk 120 and the fixed panel 110 are completely fixed and there is no relative movement, so that the movable handrail frame is fixed relative to the handrail fixed seat frame. In the handrail closed position, the self-locking function of the angle adjuster 100 can also replace the manual pull cable.

[0037] When the motor 200 is working, the angle adjuster 100 can be automatically unlocked. The motor 200 drives the angle adjuster rotating disk 120 to rotate relative to the fixed panel 110 through the reduction gearbox 300, so that the movable handrail frame rotates relative to the handrail fixed seat frame, thus completing the handrail opening and closing action.

[0038] This utility model uses a motor 200 and a gearbox 300 to drive the movable handrail frame, eliminating the need for manual operation and improving portability and comfort for heavy handrails.

[0039] The angle adjuster 100 is best operated from the armrest side.

[0040] In one embodiment of the gearbox 300, see Figure 1 The gearbox 300 is also configured to make the output shaft of the motor 200 parallel to the axis of the angle adjuster disc 120.

[0041] In this embodiment, by setting the output shaft of the motor 200 parallel to the axis of the angle adjuster rotating disk 120, the structure of the seat armrest drive system is made compact, effectively saving installation space.

[0042] In one embodiment, the movable armrest frame is the armrest frame of the rear center armrest, but it can also be the seat armrest frame in other scenarios.

[0043] In one embodiment, the output gear of the gearbox 300 can be integrated into the angle adjuster rotating disk 120, so that the output gear of the gearbox 300 can be directly connected to the angle adjuster rotating disk 120.

[0044] In another embodiment, see Figure 1The system includes a drive shaft 400. The output gear of the reduction gearbox 300 is connected to the angle adjuster rotating disk 120 through the drive shaft 400, so that the output gear of the reduction gearbox 300 is indirectly connected to the angle adjuster rotating disk 120.

[0045] Preferably, to ensure uniform force distribution in the system and minimize handrail sway, see [reference needed]. Figure 1 and Figure 2 There are two angle adjusters 100, namely a left angle adjuster 101 and a right angle adjuster 102. The left angle adjuster 101 and the right angle adjuster 102 are respectively located on both sides of the armrest fixing seat frame along its width direction, and the reduction gearbox 300 is located between the left angle adjuster 101 and the right angle adjuster 102.

[0046] Preferably, the self-locking forces of the left angle adjuster 101 and the right angle adjuster 102 are both greater than 2500 Nm.

[0047] In one embodiment, to simplify the system structure, see [reference needed]. Figure 1 and Figure 2 The left angle adjuster 101 and the right angle adjuster 102 share a common drive shaft 400. See also Figure 3 The output gear of the reduction gearbox 300 is provided with a through first connecting hole 310. (See also...) Figure 4 The left angle adjuster 101 and the right angle adjuster 102 each have a second connecting hole 121 on their adjusting disc 120. (See also...) Figure 2 The drive shaft 400 and the reduction gearbox 300 are circumferentially limited connected through the first connecting hole 310. The two ends of the drive shaft 400 are circumferentially fixed to the second connecting hole 121 of the left angle adjuster 101 and the second connecting hole 121 of the right angle adjuster 102, respectively.

[0048] Specifically, the shapes of the first connecting hole 310 and the second connecting hole 121 are square, elliptical, or star-shaped polygons, respectively. The star-shaped polygon can be a pentagonal star or a heptagonal star. Figure 3 The first connecting hole 310 and Figure 4 The second connecting hole 121 is shaped like a seven-pointed star.

[0049] In one embodiment, the fixed panel 110 is fixedly connected to the armrest fixing seat frame by welding.

[0050] Specifically, see Figure 4 The fixed panel 110 is provided with welding bosses 111, and the armrest fixing seat frame is provided with through holes. The fixed panel 110 and the armrest fixing seat frame are connected by inserting the welding bosses 111 into the through holes and welding them together. More specifically, the welding bosses 111 are crescent-shaped, circular, square, or elliptical. More specifically, there are two or more welding bosses 111, arranged in a circular array around the angle adjuster rotating disk 120. Figure 4 For example, Figure 4 The welding boss 111 is crescent-shaped and there are two of them, arranged in a circular array around the angle adjuster rotating disk 120.

[0051] Similarly, see Figure 2 The angle adjuster rotating disk 120 is also provided with a welding boss 111, and the movable handrail frame is also provided with a through hole. The angle adjuster rotating disk 120 and the movable handrail frame are fixedly connected by inserting the welding boss 111 into the through hole and welding.

[0052] In one embodiment, to secure the gearbox 300 to the movable handrail frame, the gearbox 300 includes a mounting hole 320, in which a screw is disposed. The mounting hole 320 of the gearbox 300 is connected to the movable handrail frame via the screw. Specifically, the mounting hole 320 can be a smooth hole or a threaded hole. Figure 3 The mounting hole 320 in the middle is a smooth hole.

[0053] Specifically, see Figure 3 The wiring harness connection 210 of the motor 200 includes a Hall signal interface and / or a power interface, which are connected to the vehicle controller via an external wiring harness.

[0054] In this embodiment, the motor 200 with a Hall signal interface has a position memory function. Consumers can adjust the handrail to stop at different angles according to their own needs. When the motor 200 stops at the set opening angle of the handrail, the angle adjuster 100 will self-lock and fix the handrail system.

[0055] Specifically, the angle adjuster 100 is a concentric angle adjuster or an eccentric angle adjuster.

[0056] In one embodiment, to prevent axial movement of the drive shaft 400, the system further includes disc retainers for limiting axial movement of the drive shaft 400. Disc retainers are respectively fitted onto both sides of the drive shaft 400, and the disc retainers respectively engage with the angle adjusters 100 on the corresponding sides. The disc retainers are not shown in the figures.

[0057] The working principle of the seat armrest drive system provided in the embodiments of this utility model is explained as follows:

[0058] The fixing panel 110 of the left angle adjuster 101 and the fixing panel 110 of the right angle adjuster 102 are welded to the armrest fixing base frame respectively. The angle adjuster rotating disk 120 of the left angle adjuster 101 and the angle adjuster rotating disk 120 of the right angle adjuster 102 are welded to the movable armrest frame respectively. The housing of the gearbox 300 is fixedly connected to the movable armrest frame with screws. Then the motor 200 is connected to the wiring harness and the power is turned on. The motor 200 undergoes initial deceleration through the reduction gearbox 300, amplifying the transmission torque initially. The reduction gearbox 300 transmits power to the drive shaft 400 through the first connecting hole 310. The drive shaft 400 drives the left and right angle adjusters 101 and 102 to rotate. The left and right angle adjusters 100 themselves have reduction ratios, which can further reduce the speed of the drive shaft 400, amplifying the transmission torque again. Finally, the power is transmitted to the movable armrest frame. Through two decelerations and torque amplifications, the movable armrest frame can maintain a stable speed under heavy load. By controlling the forward and reverse rotation of the motor 200, the movable armrest frame can be opened and closed. Through the calibration of the vehicle controller, the position memory of the motor 200 can be realized, thereby locking the opening angle of the movable armrest frame.

[0059] The left and right angle adjusters 101 and 102 are symmetrically arranged and installed on the left and right sides, and their transmission ratio remains consistent at all times. The left and right angle adjusters 102 will automatically unlock when driven by the drive shaft 400, and have a certain unlocking torque, generally not exceeding 2.5Nm. When the motor 200 stops rotating, the driving torque of the drive shaft 400 disappears, the left and right angle adjusters 102 will stop rotating, and the movable handrail frame will be in a self-locking state, with a self-locking torque exceeding 2500Nm.

[0060] This utility model provides a concept and method for a seat armrest drive system. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A seat armrest actuation drive system, characterized in that, The device includes an angle adjuster (100), a motor (200), and a gearbox (300). The angle adjuster (100) includes a fixed panel (110) fixedly connected to the armrest fixed seat frame and an angle adjuster rotating disk (120) fixedly connected to the movable armrest frame. The gearbox (300), the motor (200), and the movable armrest frame are fixed together. The input gear of the gearbox (300) is connected to the output shaft of the motor (200), and the output gear of the gearbox (300) is directly or indirectly connected to the angle adjuster rotating disk (120).

2. The seat armrest actuation drive system according to claim 1, characterized in that, The gearbox (300) is also configured such that the output shaft of the motor (200) and the axis of the angle adjuster disc (120) are arranged parallel to each other; The wiring harness connection port (210) of the motor (200) includes a Hall signal interface and / or a power interface, which is connected to an external wiring harness.

3. The seat armrest actuation drive system according to claim 1 or 2, characterized in that, Includes a drive shaft (400), and the output gear of the reduction gearbox (300) is connected to the angle adjuster rotating disk (120) via the drive shaft (400).

4. The seat armrest actuation drive system according to claim 3, characterized in that, The angle adjuster (100) is provided in two parts, namely a left angle adjuster (101) and a right angle adjuster (102), which are respectively located on both sides of the armrest fixing seat frame along its width direction.

5. The seat armrest actuation drive system according to claim 4, characterized in that, The self-locking forces of the left angle adjuster (101) and the right angle adjuster (102) are both greater than 2500 Nm.

6. The seat armrest actuation drive system according to claim 4, characterized in that, The left angle adjuster (101) and the right angle adjuster (102) share the drive shaft (400); the output gear of the reduction gearbox (300) is provided with a through first connecting hole (310), and the angle adjuster rotating disk (120) of the left angle adjuster (101) and the angle adjuster rotating disk (120) of the right angle adjuster (102) are respectively provided with second connecting holes (121); the drive shaft (400) and the reduction gearbox (300) are circumferentially limited connected through the first connecting hole (310), and the two ends of the drive shaft (400) are circumferentially fixed to the second connecting holes (121) of the left angle adjuster (101) and the second connecting holes (121) of the right angle adjuster (102).

7. The seat armrest actuation drive system according to claim 6, characterized in that, The shapes of the first connecting hole (310) and the second connecting hole (121) are square, elliptical, or star-shaped polygons, respectively.

8. The seat armrest actuation drive system according to claim 1, characterized in that, The fixed panel (110) is provided with a welding boss (111), and the armrest fixing seat frame is provided with a through hole. The fixed panel (110) and the armrest fixing seat frame are connected by inserting the welding boss (111) into the through hole and welding. The shape of the welding boss (111) is crescent-shaped, circular, square or elliptical. There are two or more welding bosses (111) arranged in a ring array around the angle adjuster rotating disk (120).

9. The seat armrest actuation drive system according to claim 1 or 2, characterized in that, The gearbox (300) includes a mounting hole (320), in which a screw is provided. The mounting hole (320) of the gearbox (300) is connected to the movable handrail frame through the screw. The mounting hole (320) is either a smooth hole or a threaded hole.

10. The seat armrest actuation drive system according to claim 1 or 2, characterized in that, It also includes disc retainers for limiting the axial movement of the drive shaft (400), with disc retainers sleeved on both sides of the drive shaft (400) and the disc retainers respectively engaging with the angle adjusters (100) on the corresponding sides.

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