Angle detection structure for automotive seat
By using sensors to detect the relative rotation angle between rotating and axial components, and combining this with the transmission ratio of the synchronizing rod and the angle adjuster, the problem of poor accuracy in detecting the rotation angle of car seats is solved, achieving high-precision, real-time angle detection.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- YANFENG INTERNATIONAL AUTOMOTIVE TECHNOLOGY CO LTD
- Filing Date
- 2025-12-15
- Publication Date
- 2026-06-25
AI Technical Summary
Existing methods for detecting the rotation angle of car seats suffer from poor accuracy and cannot meet the requirements of high-demand safety systems.
The relative rotation angle between the rotating component and the axial component is detected by a sensor. The axial component is limited by the connection with the connecting part, and the transmission ratio of the synchronizing rod and the angle adjuster is combined to achieve high-precision angle calculation.
It achieves high-precision, real-time rotation angle detection, meeting the high requirements of safety systems, and the sensor has the advantages of small size and high integration.
Smart Images
Figure CN2025142545_25062026_PF_FP_ABST
Abstract
Description
Car seat angle detection structure Technical Field
[0001] This disclosure relates to the technical field of automobile seats, and specifically to an angle detection structure for automobile seats. Background Technology
[0002] Adjustable functions are becoming increasingly common in car seats, primarily including backrest rotation adjustment, seat cushion lifting adjustment, and backrest shoulder rotation adjustment. Car seat safety systems require that when the car's adjustable components move beyond a certain angle, the mechanism must return to a certain angle within a certain timeframe. Therefore, it is necessary to detect the rotation angle of the adjustable components. Existing detection methods include using a motor-driven hanger to detect the rotation angle, which has the advantage of low cost but low accuracy. Another method uses a switch-type sensor to detect the rotation angle, which also has the advantage of low cost but low accuracy. Summary of the Invention
[0003] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide an angle detection structure for automobile seats, thereby solving the problem of poor accuracy in existing methods for detecting rotation angles on automobile seats.
[0004] The technical solution to achieve the above objectives is:
[0005] This disclosure provides an angle detection structure for an automobile seat, used to detect the rotation angle of a rotating component on the automobile seat. The rotating component is rotatable relative to a fixed component via an axial component. The angle detection structure includes:
[0006] Sensors mounted on the rotating component;
[0007] A connecting portion is formed on the sensor, which is fixedly connected to the axial member and is rotatable relative to the sensor.
[0008] A further improvement of the angle detection structure for the automobile seat disclosed herein is that an insertion hole is provided on one of the axial member and the connecting portion, and the other of the axial member and the connecting portion is inserted into the insertion hole, so that the connecting portion and the axial member are connected in a limiting manner.
[0009] A further improvement to the angle detection structure of the automobile seat disclosed herein is that the rotating element includes a linkage on the seat.
[0010] The beneficial effects of this disclosed angle detection structure for automotive seats are:
[0011] The angle detection structure disclosed herein uses a sensor to detect the relative rotation angle between the rotating component and the axial component, and then calculates the angle of the mechanism, which can achieve the requirements of high precision and real-time sensing, and meet the requirements of high-demand safety systems.
[0012] The sensor selected for the angle detection structure disclosed herein has the advantages of small size and high integration.
[0013] This disclosure also provides an angle detection structure for a car seat, used to detect the rotation angle of a rotating component on a car seat. The rotating component rotates relative to a fixed component via an angle adjuster. The fixed plate of the angle adjuster is connected to the fixed component, and the rotating plate of the angle adjuster is connected to the rotating component. A synchronizing rod is passed through and connected to the angle adjuster. The angle detection structure includes:
[0014] A sensor mounted on the rotating component or the fixed component;
[0015] An interface portion is formed on the sensor, which is fixedly connected to the synchronizing rod and can rotate with the synchronizing rod. The interface portion and the sensor can rotate relative to each other.
[0016] A further improvement of the angle detection structure for the car seat disclosed herein is that the interface portion is provided with a through hole penetrating the sensor;
[0017] When the sensor is installed on the inner side of the rotating component, the synchronizing rod passes sequentially through the through hole, the rotating component, and the fixing component to connect the rotating component and the fixing component; or
[0018] When the sensor is installed on the inside of the fixing member, the synchronizing rod passes through the through hole, the fixing member and the rotating member in sequence to connect the rotating member and the fixing member.
[0019] A further improvement of the angle detection structure for the automobile seat disclosed herein is that the interface portion is provided with a countersunk hole;
[0020] When the sensor is mounted on the outside of the rotating component, the synchronizing rod passes sequentially through the fixed component and the rotating component and enters the countersunk hole to connect the rotating component and the fixed component; or
[0021] When the sensor is installed on the outside of the fixing member, the synchronizing rod passes through the rotating member and the fixing member in sequence and enters the countersunk hole to achieve the connection between the rotating member and the fixing member.
[0022] A further improvement of the angle detection structure for the car seat disclosed herein is that the interface portion is inserted into one end of the synchronizing rod, thereby achieving a relatively fixed connection between the interface portion and the synchronizing rod.
[0023] A further improvement of the angle detection structure for the automobile seat disclosed herein is that, when the sensor is mounted on the rotating member, the sensor is movably connected to the rotating member.
[0024] A further improvement of the angle detection structure for the automobile seat disclosed herein is that an elongated hole is formed on the sensor, and a stepped bolt is provided on the rotating member, the stepped bolt passing through the elongated hole, and the elongated hole moving relative to the stepped bolt when the rotating member rotates.
[0025] A further improvement of the angle detection structure for the automobile seat disclosed herein is that, when the sensor is mounted on the fixing member, the sensor is fixedly connected to the fixing member.
[0026] A further improvement of the angle detection structure for the automobile seat disclosed herein is that the rotating component includes a backrest side panel assembly, and the fixing component includes a lower backrest connecting plate;
[0027] Alternatively, the rotating component may include a seat cushion linkage assembly, and the fixing component may include a seat cushion lower connecting plate assembly.
[0028] The beneficial effects of this disclosed angle detection structure for automotive seats are:
[0029] The angle detection structure disclosed herein uses a sensor to detect the absolute angle of rotation of the synchronizing rod, which can calculate the angle of the mechanism, achieving high precision and real-time sensing requirements, and meeting the requirements of high-demand safety systems.
[0030] The angle detection structure disclosed herein can achieve high-precision angle detection. It is related to the transmission ratio of the angle adjuster. When the synchronous rod rotates 37 degrees, the mechanism rotates 1 degree. The absolute position sensor tolerance of ±1 degree is reflected in the mechanism as ±1 / 37 degrees.
[0031] The sensor selected for the angle detection structure disclosed herein has the advantages of small size and high integration. Attached Figure Description
[0032] Figure 1 is a schematic diagram of the first embodiment of the angle detection structure of the automobile seat disclosed herein applied to the seat cushion assembly.
[0033] Figure 2 is a schematic diagram of the angle detection structure of the automobile seat of this disclosure, which is located in the rear linkage assembly of the seat cushion.
[0034] Figure 3 is a schematic diagram of the explosive decomposition structure of the structure shown in Figure 2.
[0035] Figure 4 is a cross-sectional view of the sensor mounting location in Figure 2.
[0036] Figure 5 is a schematic diagram of the axial component in Figure 3.
[0037] Figure 6 is a schematic diagram of the first embodiment of the angle detection structure for the car seat disclosed herein.
[0038] Figures 7 to 9 are schematic diagrams showing the breakdown steps of the front lifting and adjustment process of the seat cushion assembly.
[0039] Figure 10 is a schematic diagram of the second and fourth embodiments of the angle detection structure of the automobile seat disclosed herein, applied to the seat cushion assembly and the backrest assembly.
[0040] Figure 11 is a schematic diagram of the second embodiment of the angle detection structure of the car seat of this disclosure, installed on the connecting plate under the backrest.
[0041] Figure 12 is a schematic diagram of the explosive decomposition structure of the structure shown in Figure 11.
[0042] Figure 13 is a cross-sectional view of the sensor mounting location in Figure 11.
[0043] Figure 14 is a schematic diagram of the second embodiment of the angle detection structure for the car seat disclosed herein.
[0044] Figures 15 to 17 are schematic diagrams showing the disassembled steps of the backrest side panel assembly's rotation adjustment process relative to the lower backrest connecting plate.
[0045] Figure 18 is a schematic diagram of the third embodiment of the angle detection structure of the automobile seat of this disclosure, installed on the backrest side panel assembly.
[0046] Figure 19 is a schematic diagram of the explosive decomposition structure of the structure shown in Figure 18.
[0047] Figure 20 is a cross-sectional view of the sensor mounting location in Figure 18.
[0048] Figure 21 is a schematic diagram of the third embodiment of the angle detection structure for the car seat disclosed herein.
[0049] Figure 22 is a schematic diagram of the fourth embodiment of the angle detection structure of the automobile seat of this disclosure installed on the seat cushion linkage assembly.
[0050] Figure 23 is a schematic diagram of the exploded decomposition structure of the structure shown in Figure 22.
[0051] Figure 24 is a cross-sectional view of the sensor mounting location in Figure 22.
[0052] Figure 25 is a schematic diagram of the fourth embodiment of the angle detection structure for the car seat of this disclosure.
[0053] Figures 26 to 28 are schematic diagrams showing the breakdown steps of the seat cushion linkage assembly's rotation adjustment process relative to the lower seat cushion connecting plate assembly.
[0054] Figure 29 is a partially enlarged schematic diagram of the long hole in the sensor in Figure 26.
[0055] Figure 30 is a magnified view of a portion of the long hole in the sensor in Figure 27.
[0056] Figure 31 is a partially enlarged schematic diagram of the long hole in the sensor in Figure 28.
[0057] Figure 32 is a schematic diagram of the fifth embodiment of the angle detection structure of the automobile seat of this disclosure, installed in the connecting plate assembly under the seat cushion.
[0058] Figure 33 is a schematic diagram of the exploded decomposition structure of the structure shown in Figure 32.
[0059] Figure 34 is a cross-sectional view of the sensor mounting location in Figure 32.
[0060] Figure 35 is a structural schematic diagram of the fifth embodiment of the angle detection structure for automobile seats disclosed herein.
[0061] Explanation of reference numerals in the attached drawings: 101-Lower backrest connecting plate; 103-Backrest synchronizing rod; 104-Backrest side plate assembly; 105-Lower backrest crossbeam; 106-Backrest angle adjuster; 107-Backrest motor; 108, 207-Motor mounting bolts; 109-Backrest thrust cap; 110, 209-Step bolts; 201-Lower seat cushion connecting plate assembly; 203-Seat cushion synchronizing rod; 204-Seat cushion connecting rod assembly; 205-Seat cushion angle adjuster; 206-Seat cushion motor; 208-Seat cushion thrust cap; 301-Seat cushion wall panel; 302-Slide rail assembly; 303-Rear connecting rod; 304-Front connecting rod; 305-Axial component; 306-Insertion hole; 307-Fixing bracket; 401, 411, 421, 431, 441 - Sensors; 402 - Connector; 403 - Mounting bracket; 404, 414, 444 - Sensor mounting bolts; 405 - Bracket mounting bolts; 406, 416, 426, 436, 446 - Wiring harness; 407, 417, 427, 437, 447 - Connectors; 408, 418, 448 - Mounting holes; 415, 445 - Locating pins; 424, 434 - Sensor mounting nuts; 412, 422, 432, 442 - Interface parts; 413, 443 - Fixing brackets; Detailed Implementation
[0062] The present disclosure will be further described below with reference to the accompanying drawings and specific embodiments.
[0063] Referring to Figure 1, this disclosure provides an angle detection structure for an automotive seat, used to detect the rotation angle of rotating components on the automotive seat during vehicle operation or under usage conditions. This can be applied to collision resetting of rotating components. Specifically, the angle detection structure of this disclosure can detect the rotation angle of rotating components such as connecting rods, and can also detect the rotation angle of rotating components driven by synchronizer rods. It has the advantages of high detection accuracy, small size, and high integration. The angle detection structure of this automotive seat will be described below with reference to the accompanying drawings.
[0064] Referring to Figure 1, a schematic diagram of the first embodiment of the angle detection structure of the automobile seat disclosed herein applied to the seat cushion assembly is shown. The angle detection structure of the automobile seat disclosed herein will be described below with reference to Figure 1.
[0065] As shown in Figures 1 and 3, the angle detection structure for a car seat disclosed herein is used to detect in real time the rotation angle of a rotating component on the car seat during vehicle operation. This rotating component can rotate relative to a fixed component via an axial member 305. The angle detection structure can be positioned at the location where relative rotation occurs. Referring to Figures 4 and 6, the angle detection structure includes a sensor 401 mounted on the rotating component and a connecting portion 402 formed on the sensor 401. The connecting portion 402 is connected to the axial member 305, and the connecting portion 402 and the sensor 401 can rotate relative to each other.
[0066] As shown in Figure 1, a front connecting rod 304 is provided at the front of the seat cushion panel 301 of the car seat. One end of the front connecting rod 304 is hinged to the front of the seat cushion panel 301, and the other end is hinged to the slide rail assembly 302 or a fixed frame sliding within the slide rail assembly 302. A rear connecting rod 303 is provided at the rear of the seat cushion panel 301. One end of the rear connecting rod 303 is hinged to the rear of the seat cushion panel 301, and the other end is hinged to the slide rail assembly 302 or a fixed frame sliding within the slide rail assembly 302. The front connecting rod 304 and the rear connecting rod 303 allow for lifting and adjustment of the front and rear of the seat cushion panel 301. The sensor 401 of the angle detection structure disclosed herein can be installed on the front link 304 and the rear link 303 to detect the rotation angle of the front link 304 and the rear link 303, which can be rotating components on a car seat.
[0067] As shown in Figures 2 and 3, one end of the rear link 303 is rotatably mounted on the fixed frame 307 via the axial member 305. The rear link 303 can be adjusted to rotate relative to the axial member 305. The sensor 401 is mounted on the rear link 303 and can rotate with the rear link 303. As shown in Figures 4 and 6, the connecting part 402 on the sensor 401 is connected to the axial member 305. The rear link 303 and the axial member 305 can rotate relative to each other, and the sensor 401 and the connecting part 402 can also rotate relative to each other, thereby detecting the angle of relative rotation between the rear link 303 and the axial member 305, and thus detecting the lifting angle of the seat cushion.
[0068] Furthermore, a mounting bracket 403 is provided on the rear link 303 corresponding to the sensor 401, and the sensor 401 is mounted on the rear link 303 through the mounting bracket 403.
[0069] Furthermore, the mounting bracket 403 is fixedly connected to the rear connecting rod 303 by bracket mounting bolts 405, of which two bolts 405 are provided. Alternatively, the mounting bracket 403 can be fixed to the rear connecting rod 303 by welding.
[0070] Sensor 401 is fastened to mounting bracket 403 by sensor mounting bolt 404. Mounting hole 408 is formed on sensor 401, and sensor mounting bolt 404 passes through mounting hole 408 to connect sensor 401 to mounting bracket 403. Alternatively, sensor 401 is fixedly connected to mounting bracket 403 by welding.
[0071] Furthermore, as shown in Figures 4 and 5, the axial member 305 has an insertion hole 306 corresponding to the connecting part 402; the connecting part 402 is inserted into the insertion hole 306, so that the connecting part 402 and the axial member 304 are in a limiting connection, and the limiting connection prevents the connecting part 402 from rotating relative to the axial member 305. Alternatively, the connecting part 402 has an insertion hole, and the axial member 305 is inserted into the insertion hole, realizing the limiting connection between the connecting part 402 and the axial member 305.
[0072] Preferably, the axial component 305 can be a stepped bolt or a rotating shaft.
[0073] Furthermore, the shape of the connecting part 402 or the axial member 305 matches that of the insertion hole 306, and both are non-circular, such as square, polygonal, or floral. Alternatively, the connecting part 402 or the axial member 305 can be fixedly connected to the insertion hole 306, either by clamps or by welding. As shown in Figure 6, in the first embodiment, the sensor 401 is also connected to a wiring harness 406 and a connector 407 located at the end of the wiring harness 406. When installing the sensor 401, it is connected to a rotating component, which includes a linkage on the seat, such as a linkage mechanism, a front linkage 304, a rear linkage 303, etc. The wiring harness 406 and the connector 407 can be arranged reasonably according to the spatial layout of the sensor 401. The connector 407 can be plugged into a signal line to transmit the detection signal from the sensor 401.
[0074] As shown in Figures 7 to 9, the process of the front end of the seat cushion being raised is illustrated. The sensor 401 of the angle detection structure of this disclosure is installed on the rear link 303, which can detect the rotation angle of the rear link 303.
[0075] This disclosure also provides an angle detection structure for a car seat, used to detect the rotation angle of a rotating component on the car seat. The rotating component can rotate relative to a fixed component via an angle adjuster. The fixed plate of the angle adjuster is connected to the fixed component, and the rotating plate of the angle adjuster is connected to the rotating component. A synchronizing rod is passed through and connected to the angle adjuster. The angle detection structure of this disclosure includes a sensor mounted on the rotating component or the fixed component and an interface portion formed on the sensor. The interface portion is fixedly connected to the synchronizing rod and can rotate with the synchronizing rod. The interface portion and the sensor can rotate relative to each other.
[0076] The sensor disclosed herein can detect the rotation angle of the synchronizing rod and then calculate the rotation angle of the rotating component, achieving high precision and real-time sensing requirements, and meeting the high requirements of safety systems.
[0077] In a preferred embodiment, the interface is provided with a through hole for the sensor. When the sensor is installed on the inner side of the rotating part, the synchronizing rod passes through the through hole, the rotating part and the fixed part in sequence to realize the connection between the rotating part and the fixed part.
[0078] Alternatively, when the sensor is mounted on the inside of the fixed component, the synchronizing rod passes through the perforation, the fixed component, and the rotating component in sequence to connect the rotating component and the fixed component.
[0079] In another preferred embodiment, the interface is provided with a countersunk hole; when the sensor is installed on the outside of the rotating part, the synchronizing rod passes through the fixed part, the rotating part and the countersunk hole in sequence to realize the connection between the rotating part and the fixed part.
[0080] Alternatively, when the sensor is mounted on the outside of the fixed component, the synchronizing rod passes through the rotating component, the fixed component, and the countersunk hole in sequence to connect the rotating component and the fixed component.
[0081] In another preferred embodiment, the interface portion is inserted into one end of the synchronizing rod, thereby achieving a relatively fixed connection between the interface portion and the synchronizing rod. For example, a countersunk hole is formed at the end of the synchronizing rod, and the interface portion is inserted into the countersunk hole to achieve a relatively fixed connection between the interface portion and the synchronizing rod.
[0082] In one specific embodiment of this disclosure, a sensor is mounted on a rotating component and is movably connected to the rotating component.
[0083] Furthermore, an elongated hole is formed on the sensor, and a stepped bolt is provided on the rotating component. The stepped bolt passes through the elongated hole, and the elongated hole moves relative to the stepped bolt when the rotating component rotates.
[0084] In one specific embodiment of this disclosure, the sensor is mounted on a fixture, and the sensor is fixedly connected to the fixture.
[0085] In one specific embodiment of this disclosure, the rotating component includes a backrest side panel assembly, and the fixing component includes a lower backrest connecting plate.
[0086] Alternatively, the rotating component may include the seat cushion linkage assembly, and the fixing component may include the seat cushion lower connecting plate assembly.
[0087] Specifically, as shown in Figure 10, the backrest of the car seat is driven to rotate by a drive mechanism consisting of a synchronizing rod and an angle adjuster, and the front linkage assembly of the seat cushion is driven to rotate by a drive mechanism consisting of a synchronizing rod and an angle adjuster. The angle detection structure disclosed herein can be used to detect the rotation angle at the structure driven to rotate by the aforementioned synchronizing rod.
[0088] In the second embodiment, as shown in Figures 11 to 14, the sensor 411 of the angle detection structure is installed on the outside of the lower backrest connecting plate 101. The backrest side plate assembly 104 can be rotated and adjusted relative to the lower backrest connecting plate 101. At this time, the backrest side plate assembly 104 is a rotating component, and the lower backrest connecting plate 101 is a fixed component. A lower backrest crossbeam 105 is connected between the two backrest side plate assemblies 104. The rotating disk of the backrest angle adjuster 106 is fixedly connected to the backrest side plate assembly 104, such as by welding or bolting. The fixed disk of the backrest angle adjuster 106 is connected to the lower backrest connecting plate 101, such as by welding or bolting. The backrest motor 107 is mounted to the backrest side panel assembly 104 via motor mounting bolts 108. The backrest synchronizing rod 103 passes through the backrest motor 107 and the backrest angle adjuster 106 on both sides. Backrest thrust caps 109 are installed on both sides of the backrest synchronizing rod 103. The end of the backrest synchronizing rod 103 is inserted into the interface 412 of the sensor 411.
[0089] Furthermore, a fixing bracket 413 is provided on the outer side of the lower backrest connecting plate 101, through which the sensor 411 is installed. The fixing bracket 413 can be welded to the lower backrest connecting plate 101, or it can be installed on the lower backrest connecting plate 101 by other means such as bolting.
[0090] A mounting hole 418 is provided on the sensor 411, and a sensor mounting bolt 414 passes through the mounting hole 418 to fix the sensor 411 to the fixed bracket 413. Of course, the sensor 411 can be installed not only by bolting, but also by other methods, such as welding.
[0091] Furthermore, the interface portion 412 is a non-through structure with a countersunk hole. This interface portion 412 is located on one side of the sensor 411 and is fitted onto the end of the backrest synchronization rod 103. The synchronization rod 103 passes sequentially through the backrest side panel assembly 104, the angle adjuster 106, the lower backrest connecting plate 101, and the backrest thrust cap 109 before entering the countersunk hole. The shape of the interface portion 412 matches the shape of the backrest synchronization rod 103, and both are non-circular, such as square, polygonal, or floral shapes; alternatively, the interface portion can be fixedly connected to the synchronization rod via clamps or welding.
[0092] Furthermore, a positioning pin 415 is provided on the sensor 411, and a positioning hole is provided on the fixed bracket 413. The positioning pin 415 is inserted into the positioning hole to position the sensor 411.
[0093] The sensor 411 is connected to a wire harness 416 and a connector 417 located at the end of the wire harness 416. The sensor 411 is mounted on the lower backrest connecting plate 101. The wire harness 416 and connector 417 can also be mounted along the mounting direction of the lower backrest connecting plate 101. The connector 417 can be plugged into a signal line and then the detection signal of the sensor 411 is transmitted.
[0094] As shown in Figures 15 to 17, the backrest motor 107 drives the backrest synchronization rod 103 to rotate, which in turn drives the backrest side panel assembly 104 to rotate. The sensor 411 is installed on the lower backrest connecting plate 101. When the lower backrest connecting plate 101 does not rotate, the sensor 411 also does not rotate. The interface part 412 rotates with the backrest synchronization rod 103, thereby detecting the rotation angle of the backrest side panel assembly 104.
[0095] The principle behind the high detection accuracy of the angle detection structure disclosed herein will be explained below.
[0096] First, let me explain the gear ratio of the angle adjuster:
[0097] Currently, common electric gear adjusters use differential gear planetary motion, such as CI Scorell, Scorell. Keiper T2000, and AVIC TJX2. The difference lies in the number of teeth on the inner and outer gear plates; the T3000 has 37 and 36 teeth on its inner and outer gear plates, respectively. The calculation of the transmission ratio (taking 37 and 36 teeth as examples) is as follows:
[0098] The forward gear ratio of the T3000 is calculated as follows: Outer gear plate (b) teeth: 36; Inner gear plate (a) teeth: 37. The outer gear plate connects to the seat canopy, and the inner gear plate connects to the backrest. Assume: the central shaft (motor) speed is Wh, the outer gear plate (b) speed is Wb (fixed gear plate), and the inner gear plate (a) speed is Wa. iab = (Wa - Wh) / (Wb - Wh) = 36 / 37, iah = Wa / Wh = 1 / 37. Similarly, the reverse gear ratio of the T3000 is ibh = Wb / Wh = -1 / 36.
[0099] In the case of the angle adjuster being mounted correctly, the existing technology measures the angle directly by measuring Wa, so the sensor's tolerance is directly and completely reflected in the detection result. However, the sensor disclosed in this invention measures Wh, and Wa is calculated using a formula as the product of Wh and the transmission ratio. The sensor's tolerance will decrease in Wa due to the transmission ratio.
[0100] When the angle adjuster is installed in reverse, the existing angle measurement method directly measures Wb, so the sensor tolerance is directly and completely reflected in the detection result. However, the sensor disclosed in this invention detects Wh, and then calculates Wb as the product of Wh and the transmission ratio using a formula. The sensor tolerance will decrease in Wb due to the transmission ratio.
[0101] In the third embodiment, as shown in Figures 18 to 21, the sensor 421 is installed inside the backrest side panel assembly 104, which is rotatable relative to the lower backrest connecting plate 101. In this configuration, the backrest side panel assembly 104 is a rotating component, while the lower backrest connecting plate 101 is a fixed component. The rotation of the backrest side panel assembly 104 causes the sensor 421 mounted thereon to rotate as well. At this time, the interface portion 422 on the sensor 421 is a through-hole structure, with a through-hole passing through both sides of the sensor 421. The backrest synchronizing rod 103 passes through this through-hole. Specifically, the backrest synchronizing rod 103 sequentially passes through the through-hole, the backrest side panel assembly 104, the angle adjuster 106, the lower backrest connecting plate 101, and the backrest push cap 109.
[0102] Furthermore, an elongated hole 423 is formed on the sensor 421, and a stepped bolt 110 is provided on the inner side of the backrest side panel assembly 104. The stepped bolt 110 passes through the elongated hole 423, and a sensor mounting nut 424 is screwed to the end of the stepped bolt 110. The sensor 421 is mounted on the stepped bolt 110 using the sensor mounting nut 424. During the rotation of the backrest side panel assembly 104 relative to the lower backrest connecting plate 101, the stepped bolt 110 moves in the elongated hole 423, enabling the sensor 421 to absorb the eccentric fluctuations of the backrest adjuster 106.
[0103] The step bolt 110 can be screwed onto the backrest side panel assembly 104, or it can be welded onto the backrest side panel assembly 104.
[0104] The shape of the interface part 422 matches the shape of the backrest synchronization rod 103, and both are non-circular, such as square, polygonal, flower-shaped, etc.; or the interface part is fixedly connected to the synchronization rod, which can be achieved by clamps or welding.
[0105] The sensor 421 is connected to a wire harness 426 and a connector 427 located at the end of the wire harness 426. The sensor 421 is mounted on the backrest side panel assembly 104. The wire harness 426 and connector 427 can be extended downwards. The connector 427 can be plugged into and connected to a signal line, and then the detection signal of the sensor 421 is transmitted.
[0106] In the fourth embodiment, as shown in Figures 22 to 25, sensor 431 is installed on the outside of seat cushion connecting rod assembly 204. Seat cushion connecting rod assembly 204 is rotatably connected to seat cushion lower connecting plate assembly 201 via seat cushion adjuster 205. In this configuration, seat cushion connecting rod assembly 204 is a rotating component, and seat cushion lower connecting plate assembly 201 is a fixed component. The rotating disc of seat cushion adjuster 205 is connected to seat cushion connecting rod assembly 204 (e.g., by welding), and the fixed disc of seat cushion adjuster 205 is connected to seat cushion lower connecting plate assembly 201 (e.g., by welding). Seat cushion motor 206 is mounted on seat cushion lower connecting plate assembly 201 via motor mounting bolts 207. Seat cushion synchronizing rod 203 passes through seat cushion motor 206 and seat cushion adjusters 205 on both sides. Seat cushion thrust caps 208 are installed on both sides of seat cushion synchronizing rod 203. The end of the seat cushion synchronization rod 203 is also inserted into the interface 432 of the sensor 431.
[0107] The interface portion 432 is a non-through structure with a countersunk hole. This interface portion 432 is located on one side of the sensor 431 and is fitted onto the end of the seat cushion synchronization rod 203. The seat cushion synchronization rod 203 passes sequentially through the seat cushion lower connecting plate assembly 201, the seat cushion adjuster 205, the seat cushion connecting rod assembly 204, and the seat cushion thrust cap 208 before entering the countersunk hole. The shape of the interface portion 432 matches the shape of the seat cushion synchronization rod 203, and both are non-circular, such as square, polygonal, or floral shapes; alternatively, the interface portion can be fixedly connected to the synchronization rod, either through clamps or by welding.
[0108] An elongated hole 433 is formed on the sensor 431. A stepped bolt 209 is provided on the outer side of the seat cushion connecting rod assembly 204. The stepped bolt 209 passes through the elongated hole 433, and a sensor mounting nut 434 is screwed to the end of the stepped bolt 209. The sensor 431 is mounted on the stepped bolt 209 using the sensor mounting nut 434. During the rotation of the seat cushion connecting rod assembly 204 relative to the seat cushion lower connecting plate assembly 201, the stepped bolt 209 moves in the elongated hole 433, allowing the sensor 431 to absorb the eccentric fluctuations of the seat cushion adjuster 205.
[0109] The step bolt 209 can be screwed onto the seat cushion link assembly 204, or it can be welded onto the seat cushion link assembly 204.
[0110] The sensor 431 is connected to a wiring harness 436 and a connector 437 located at the end of the wiring harness 436. The sensor 431 is mounted on the seat cushion link assembly 204. The wiring harness 436 and the connector 437 can be mounted along the mounting direction of the seat cushion link assembly 204. The connector 437 can be plugged into and connected to a signal line, and then the detection signal from the sensor 431 is transmitted.
[0111] As shown in Figures 26 to 28, the seat cushion linkage assembly 204 rotates relative to the lower seat cushion connecting plate assembly 201. The sensor 431 rotates along with the seat cushion linkage assembly 204. Referring to Figures 29 to 31, during rotation, the position of the stepped bolt 209 within the elongated hole 433 is adaptively adjusted to absorb the eccentric fluctuations of the seat cushion adjuster 205. The interface part 432 rotates with the seat cushion synchronization rod 203, thereby detecting the rotation angle of the backrest linkage assembly 204.
[0112] In the fifth embodiment, as shown in Figures 32 to 35, the sensor 441 is installed inside the seat cushion under-connecting plate assembly 201. The seat cushion under-connecting plate assembly 201 does not rotate, and neither does the sensor 441. The interface portion 442 on the sensor 441 is a through structure with a through hole that passes through both sides of the sensor 441. The seat cushion synchronizing rod 203 passes through this through hole. The seat cushion synchronizing rod 203 sequentially passes through the through hole, the seat cushion under-connecting plate 201, the seat cushion adjuster 205, the seat cushion connecting rod assembly 204, and the seat cushion thrust cap 208.
[0113] The shape of the interface part 442 matches the shape of the seat cushion synchronization rod 203, and both are non-circular, such as square, polygonal, flower-shaped, etc.; or the interface part is fixedly connected to the synchronization rod, which can be achieved by clamping or welding.
[0114] Sensor 441 is mounted on the under-seat connecting plate 201 via a fixing bracket 443. Sensor 441 has mounting holes 448, through which sensor mounting bolts 444 pass, securing sensor 441 to the fixing bracket 443. However, the mounting method of sensor 441 is not limited to bolting; other connection methods, such as welding, can also be used to mount sensor 441 to the fixing bracket 443.
[0115] The fixed bracket 443 is welded to the under-seat connecting plate 201, or it can be bolted to the under-seat connecting plate 201.
[0116] Furthermore, a positioning pin 445 is provided on the sensor 441, and a positioning hole is provided on the fixed bracket 443. The positioning pin 445 is inserted into the positioning hole to position the sensor 441.
[0117] The sensor 441 is connected to a wire harness 446 and a connector 447 located at the end of the wire harness 446. The sensor 441 is installed on the seat cushion under the connecting plate assembly 201. The wire harness 446 and the connector 447 can be extended downwards. The connector 447 can be plugged into and connected to a signal line, and then the detection signal of the sensor 441 is transmitted.
[0118] The present disclosure has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present disclosure based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present disclosure, and the scope of the present disclosure shall be defined by the appended claims.
Claims
1. An angle detecting structure of an automobile seat for detecting a rotation angle of a rotating member on an automobile seat, the rotating member being rotatable with respect to a fixed member by a shaft member, characterized by comprising: a first sensor for detecting a rotation angle of the rotating member; a second sensor for detecting a rotation angle of the shaft member; and a control unit for calculating a rotation angle of the rotating member based on detection results of the first and second sensors. The angle detection structure includes: Sensors mounted on the rotating component; A connecting portion is formed on the sensor, which is fixedly connected to the axial member and is rotatable relative to the sensor.
2. The angular detection structure of a vehicle seat according to claim 1, wherein An insertion hole is provided on one of the axial member and the connecting part, and the other of the axial member and the connecting part is inserted into the insertion hole, so that the connecting part and the axial member are connected in a limiting manner.
3. The angular detection structure of a vehicle seat according to claim 2, wherein The rotating component includes a linkage on the seat.
4. An angle detecting structure for a vehicle seat for detecting a rotation angle of a rotating member on a vehicle seat, the rotating member being rotatable relative to a fixed member by a recliner, a fixed disc of the recliner being connected to the fixed member, a rotating disc of the recliner being connected to the rotating member, and a synchronizing rod being connected to the recliner, characterized in that, The angle detection structure includes: A sensor mounted on the rotating component or the fixed component; An interface portion is formed on the sensor, which is fixedly connected to the synchronizing rod and can rotate with the synchronizing rod. The interface portion and the sensor can rotate relative to each other.
5. The angular detection structure of a vehicle seat according to claim 4, wherein The interface section has a through hole that penetrates the sensor; When the sensor is installed on the inner side of the rotating component, the synchronizing rod passes through the through hole, the rotating component, and the fixing component in sequence to achieve the connection between the rotating component and the fixing component; or When the sensor is installed on the inside of the fixing member, the synchronizing rod passes through the through hole, the fixing member and the rotating member in sequence to connect the rotating member and the fixing member.
6. The angular detection structure of a vehicle seat according to claim 4, wherein The interface section is provided with a countersunk hole; When the sensor is installed on the outside of the rotating component, the synchronizing rod passes through the fixed component and the rotating component in sequence and enters the countersunk hole to achieve the connection between the rotating component and the fixed component; or When the sensor is installed on the outside of the fixing member, the synchronizing rod passes through the rotating member and the fixing member in sequence and enters the countersunk hole to achieve the connection between the rotating member and the fixing member.
7. The angular detection structure of a vehicle seat according to claim 4, wherein The interface is inserted into one end of the synchronizing rod, thereby achieving a relatively fixed connection between the interface and the synchronizing rod.
8. The angular detection structure of a seat of a vehicle according to claim 4, wherein When the sensor is mounted on the rotating component, the sensor is movably connected to the rotating component.
9. The angular detection structure of a vehicle seat according to claim 8, wherein An elongated hole is formed on the sensor, and a stepped bolt is provided on the rotating component. The stepped bolt passes through the elongated hole, and the elongated hole moves relative to the stepped bolt when the rotating component rotates.
10. The angular detection structure of a vehicle seat according to claim 5, wherein When the sensor is mounted on the fixture, the sensor is fixedly connected to the fixture.
11. The angular detection structure of a vehicle seat according to claim 4, wherein The rotating component includes a backrest side panel assembly, and the fixing component includes a lower backrest connecting plate; Alternatively, the rotating component may include a seat cushion linkage assembly, and the fixing component may include a seat cushion lower connecting plate assembly.