Automatic adjusting device for safety belt

Abstract

The utility model relates to the technical field of automobile safety belts, in particular to an automatic safety belt adjusting device which comprises a height adjuster. The height adjuster comprises a screw rod; the screw rod is connected with a driving assembly and an adjusting sliding block. The adjusting sliding block is connected with a safety belt hook; the safety belt is connected to the safety belt hook; the height adjuster is arranged on an automobile B column; the driving assembly is connected with a controller; the controller is connected with a human body state sensor, a seat position sensor and a seat backrest angle sensor. The human body state sensor can detect the shoulder height of the passenger; the seat position sensor can detect front and rear stroke position information of the seat; the seat backrest angle sensor can detect the inclination angle of a seat back of the seat; the controller receives and processes the shoulder height information and the seat position information and drives a motor of the height adjuster to adjust the height.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile safety belt, specifically, the utility model relates to a safety belt automatic adjusting device. BACKGROUND

[0002] Safety belt is the standard configuration on the car, and its use frequency is high, and the correct wearing of safety belt and the position of safety belt directly affect the safety and comfort of the passenger, and the appropriate position needs to be considered in combination with the passenger's body shape, seat position, and the like, at present, the safety belt height adjuster used in the market is all manually adjusted, and the span of each adjusting position is large, due to the individual differences of users, it is difficult for consumers to find a comfortable position for the height of the safety belt in the use process, and the improper use position of the safety belt can cause the neck to be squeezed or the shoulder to be slipped, thereby affecting the comfort and safety.

[0003] The applicant found, through retrieval, that the Chinese patent document with publication number 111791828A disclosed a safety belt ventilation device on October 20, 2020, which comprises a webbing, a ventilation channel arranged inside the webbing, and a gas supply device in communication with the ventilation channel; one end of the webbing is fixed to a first fixed hanging point, and the other end is fixed to a second fixed hanging point; the gas supply device is arranged at one end relatively close to the first fixed hanging point; a safety belt comprises the safety belt ventilation device, and further comprises a sliding buckle arranged on the webbing; one end of the webbing is provided with a lock sleeve, and the lock sleeve is used for fixing the sliding buckle; the contact surface between the sliding buckle and the webbing has a gentle curvature; the device cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to provide a safety belt automatic adjusting device capable of automatically adjusting the height of the safety belt. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a safety belt automatic adjusting device capable of automatically adjusting the height of the safety belt.

[0006] In order to solve the above technical problems, the utility model adopts the technical scheme that a safety belt automatic adjusting device comprises a height adjuster; the height adjuster comprises a screw rod; the screw rod is connected with a driving assembly and an adjusting sliding block, respectively; the adjusting sliding block is connected with a safety belt hook; a safety belt is connected to the safety belt hook; the height adjuster is arranged on the B column of the car; the driving assembly is connected with a controller; the controller is connected with a human body state sensor, a seat position sensor, and a seat backrest angle sensor, respectively.

[0007] The height adjuster comprises a mounting shell; a sliding groove is arranged on the mounting shell; the driving assembly comprises a motor; the motor is arranged at the bottom of the mounting shell; a limiting block is arranged at the top of the mounting shell; a limiting hole is arranged on the limiting block; one end of the screw rod is connected with the motor, and the other end of the screw rod is arranged in the limiting hole; the adjusting sliding block is connected with the screw rod and arranged in the sliding groove.

[0008] A threaded hole is arranged on the adjusting sliding block; an internal thread is arranged in the threaded hole; an external thread is arranged on the screw rod; the screw rod is arranged in the threaded hole; and the internal thread cooperates with the external thread.

[0009] One side of the automobile B column is provided with a seat; the human body state sensor comprises an infrared array sensor; the human body state sensor is arranged on the mounting shell and at one side of the seat.

[0010] One side of the seat is provided with an automobile roof panel; a 3D ToF camera is arranged on the automobile roof panel.

[0011] The bottom of the seat is provided with a slide rail; the slide rail comprises a lower rail; an upper rail is arranged on the lower rail; the seat position sensor comprises a Hall sensor and a magnet; the Hall sensor is arranged on the lower rail; the magnet is arranged on the upper rail; and the magnet is arranged at one side of the Hall sensor.

[0012] The lower rail comprises a first side plate; the upper rail comprises a second side plate; a gap is arranged between the first side plate and the second side plate; the Hall sensor is arranged on the first side plate; and the magnet is arranged on the second side plate.

[0013] The seat comprises a seat back; the seat back angle sensor comprises a digital inclinometer; and the seat back angle sensor is arranged in the seat back.

[0014] The seat back angle sensor is arranged in the seat back.

[0015] The human body state sensor can detect the shoulder height of the passenger; the seat position sensor can detect the front and rear stroke position information of the seat; the seat back angle sensor can detect the inclination angle of the seat back; the controller receives the shoulder height information and the seat position information for processing, obtains the position data of the seat belt height adjuster, drives the motor of the height adjuster to adjust the height, so that the seat belt height adjuster can be automatically adjusted according to the individual differences of the passenger, the seat belt is in the best position, the situation of strangling the neck and sliding the shoulder is prevented, the use comfort of the seat belt is improved, and the best restraint state better protects the passenger. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model discloses a seat position sensor installation state schematic view.

[0017] Figure 1 It is the structure schematic drawing of the safety belt automatic adjusting device of the utility model.

[0018] Figure 2 It is the structure schematic drawing of the height regulator of the utility model.

[0019] Figure 3 It is the seat backrest angle sensor installation state schematic view of the utility model.

[0020] Figure 4 It is the 3D ToF camera installation state schematic view of the utility model.

[0021] Figure 5 It is the seat position sensor installation state schematic view of the utility model.

[0022] The mark in above-mentioned drawing is all:

[0023] Mark in drawing is: 1, height regulator, 101, install shell, 102, sliding slot, 103, motor, 104, limit block,

[0024] 2, screw rod,

[0025] 3, adjusting sliding block,

[0026] 4, car B column,

[0027] 5, controller,

[0028] 6, human state sensor, 601, 3D ToF camera,

[0029] 7, seat position sensor,

[0030] 8, seat backrest angle sensor,

[0031] 9, seat, 901, chair back,

[0032] 10, car roof lining,

[0033] 11, slide rail, 111, lower rail, 112, upper rail, 113, hall sensor, 114, magnet, 115, first side plate, 116, let place slot, 117, second side plate. DETAILED DESCRIPTION

[0034] The utility model discloses a seat position sensor installation state schematic view.

[0021] Figure 5 It is the seat position sensor installation state schematic view of the utility model.

[0022] The mark in above-mentioned drawing is all:

[0023] Mark in drawing is: 1, height regulator, 101, install shell, 102, sliding slot, 103, motor, 104, limit block,

[0024] 2, screw rod,

[0025] 3, adjusting sliding block,

[0026] 4, car B column,

[0027] 5, controller,

[0028] 6, human state sensor, 601, 3D ToF camera,

[0029] 7, seat position sensor,

[0030] 8, seat backrest angle sensor,

[0031] 9, seat, 901, chair back,

[0032] 10, car roof lining,

[0033] 11, slide rail, 111, lower rail, 112, upper rail, 113, hall sensor, 114, magnet, 115, first side plate, 116, let place slot, 117, second side plate. DETAILED DESCRIPTION

[0034] The utility model discloses a seat position sensor installation state schematic view.

[0021] Figure 5 It is the seat position sensor installation state schematic view of the utility model.

[0022] The mark in above-mentioned drawing is all:

[0023] Mark in drawing is: 1, height regulator, 101, install shell, 102, sliding slot, 103, motor, 104, limit block,

[0024] 2, screw rod,

[0025] 3, adjusting sliding block,

[0026] 4, car B column,

[0027] 5, controller,

[0028] 6, human state sensor, 601, 3D ToF camera,

[0029] 7, seat position sensor,

[0030] 8, seat backrest angle sensor,

[0031] 9, seat, 901, chair back,

[0032] 10, car roof lining,

[0033] 11, slide rail, 111, lower rail, 112, upper rail, 113, hall sensor, 114, magnet, 115, first side plate, 116, let place slot, 117, second side plate. DETAILED DESCRIPTION

[0034] The utility model discloses a seat position sensor installation state schematic view.

[0035] Figure 1 The safety belt automatic adjusting device shown comprises a height adjuster 1; the height adjuster 1 comprises a screw rod 2; the screw rod 2 is connected with a driving assembly and an adjusting sliding block 3 respectively; the adjusting sliding block 3 is connected with a safety belt hook; a safety belt is connected on the safety belt hook; the height adjuster 1 is arranged on a B column 4 of a car; the driving assembly is connected with a controller 5; the controller 5 is connected with a human body state sensor 6, a seat position sensor 7 and a seat backrest angle sensor 8 respectively.

[0036] The human body state sensor 6 can detect the shoulder height of the passenger; the seat position sensor 7 can detect the front and rear stroke position information of the seat; the seat backrest angle sensor 8 can detect the inclination angle of the backrest 901 of the seat 9; the controller 5 receives the shoulder height information and the seat position information for processing to obtain the position data of the height adjuster 1 of the safety belt, drives the motor of the height adjuster 1 to adjust the height; so that the safety belt height can be automatically adjusted according to the individual differences of the passenger, the safety belt is in the best position, the situation of strangling the neck and sliding the shoulder is prevented, the use comfort of the safety belt is improved, and the passenger is better protected in the best restraint state.

[0037] The height adjuster 1 comprises a mounting shell 101; the mounting shell 101 is provided with a sliding groove 102; the driving assembly comprises a motor 103; the motor 103 is arranged at the bottom of the mounting shell 101, and a limiting block 104 is arranged at the top of the mounting shell 101; the limiting block 104 is provided with a limiting hole; one end of the screw rod 2 is connected with the motor 103, and the other end of the screw rod 2 is arranged in the limiting hole; the adjusting sliding block 3 is connected with the screw rod 2, and the adjusting sliding block 3 is arranged in the sliding groove 102.

[0038] The mounting shell 101 is a hollow shell; one side of the mounting shell 101 is fixedly connected with the B column 4 of the car; the other side of the mounting shell 101 is provided with the sliding groove 102; the sliding groove 102 is in communication with the inside of the mounting shell 101; the motor 103 is fixedly connected in the inside of the mounting shell 101 and arranged at the bottom end of the mounting shell 101; the limiting block 104 is arranged in the inside of the mounting shell 101 and fixedly connected at the top end of the mounting shell 101; the screw rod 2 is fixedly connected on the output shaft of the motor 103, so that the screw rod 2 can be driven to rotate forward and reverse; the end of the screw rod 2 away from the motor 103 is arranged in the limiting hole, and the screw rod 2 and the limiting hole are gap-fitted.

[0039] A threaded hole is arranged on the adjusting sliding block 3; an internal thread is arranged in the threaded hole; an external thread is arranged on the screw rod 2; the screw rod 2 is arranged in the threaded hole; the internal thread is matched with the external thread.

[0040] The threaded hole is a through hole; the adjusting sliding block 3 is threadedly connected to the screw rod 2; the adjusting sliding block 3 extends out of the sliding groove 102, and is limited by the sliding groove 102; when the screw rod 2 is rotated forward or reversely, the adjusting sliding block 3 can move upward or downward along the sliding groove 102.

[0041] The automobile B column 4 is provided with a seat 9 on one side; the human body state sensor 6 comprises an infrared array sensor; the human body state sensor 6 is arranged on the mounting shell 101 and on one side of the seat 9.

[0042] The infrared array sensor is arranged on the mounting shell 101; 16-24 infrared emission-receiving pairs are arranged in the vertical direction, covering a height range of 1.1-1.5 meters, and adapting to the shoulder height of children to adults; the infrared array sensor is composed of a plurality of infrared emission diodes and corresponding receiving diodes; when the infrared array sensor works, the infrared emission diodes emit infrared light to the shoulder; the infrared light propagates out at a certain angle and range, forming an infrared detection area; when the infrared light meets the shoulder, it is reflected; different parts of the shoulder have different reflection degrees and angles of the infrared light, and at the same time, the shoulder blocks a part of the infrared light, so that the infrared light cannot directly reach the receiving diode; a plurality of receiving diodes in the infrared array receive the reflected infrared light; due to the different distances and angles between the shoulder points and the infrared array sensor, the light intensity and reflection time received by the receiving diodes at different positions also differ; according to these differences, the infrared array sensor can generate a series of electrical signals related to the shoulder contour;

[0043] The human body state sensor 6 sends the shoulder data to the controller 5; the controller 5 can be a vehicle-grade MCU (such as the NXPS32K series), supports CANFD / LIN bus communication, and integrates an ADC module to process the sensor signal; after processing, the controller 5 controls the motor 103 to rotate forward or reversely, and controls the height of the adjusting sliding block 3.

[0044] The seat 9 is provided with an automobile roof trim 10 on one side; the automobile roof trim 10 is provided with a 3DToF camera 601.

[0045] The 3DToF camera 601 is fixedly connected to the automobile roof trim 10, so that its detection range can cover the front seat; the 3DToF (Time of Flight) camera is a three-dimensional imaging device that obtains depth information of a target object by measuring the round-trip time or phase difference of light pulses; it uses a active infrared light source (such as a laser or an LED) to emit a modulated light signal, and receives a reflected signal through a sensor, calculates the distance by combining the speed of light, and finally generates a depth map containing three-dimensional coordinates; the 3DToF camera 601 sends human body data to the controller 5; after processing, the controller 5 controls the motor 103 to rotate forward or reversely, and controls the height of the adjusting sliding block 3.

[0046] The seat 9 is provided with a slide rail 11; the slide rail 11 comprises a lower rail 111; the lower rail 111 is provided with an upper rail 112; the seat position sensor 7 comprises a Hall sensor 113 and a magnet 114; the Hall sensor 113 is arranged on the lower rail 111; the magnet 114 is arranged on the upper rail 112; the magnet 114 is arranged on one side of the Hall sensor 113.

[0047] The seat 9 is mounted on the upper rail 112; the upper rail 112 can slide on the lower rail 111; the lower rail 111 is fixed on the bottom plate; the Hall sensor 113 is fixedly connected to the lower rail 111, and the magnet 114 is fixedly connected to the upper rail 112 and moves with the upper rail 112; when the seat 9 slides on the lower rail 111 with the upper rail 112, the relative position between the magnet 114 and the Hall sensor 113 changes, causing the magnetic field strength and direction at the position of the Hall sensor 113 to change, thereby causing the Hall sensor 113 to generate a corresponding change in electrical signal; the Hall sensor 113 sends the detected data to the controller 5; after processing, the controller 5 controls the motor 103 to rotate forward or reverse, thereby controlling the height of the adjustment slide 3.

[0048] The lower rail 111 comprises a first side plate 115; the upper rail 112 comprises a second side plate 117; a clearance slot 116 is arranged between the first side plate 115 and the second side plate 117; the Hall sensor 113 is arranged on the first side plate 115; the magnet 114 is arranged on the second side plate 117.

[0049] The lower rail 111 is provided with a T-shaped slot; the upper rail 112 has a square structure; the clearance slots 116 are arranged on both sides of the upper rail 112; the clearance slots 116 provide installation space for the Hall sensor 113 and the magnet 114.

[0050] The seat 9 comprises a seat back 901; the seat back angle sensor 8 comprises a digital inclinometer; the seat back angle sensor 8 is arranged in the seat back 901.

[0051] The digital inclinometer internally uses an accelerometer based on micro-electromechanical system (MEMS) technology to measure the inclination angle of the seat back 901; when the seat back 901 is at different inclination angles, the component of gravitational acceleration on the sensitive axis of the accelerometer will change; according to Newton's second law, the gravity acting on the mass block as an external force causes displacement, and the accelerometer in turn converts this displacement into an electrical signal through capacitive, resistive or inductive means; after amplification, filtering and other processing by the signal processing circuit inside the digital inclinometer, the electrical signal is converted into a digital signal by an analog-to-digital converter, and then calculated and processed through a specific algorithm, and finally converted into the corresponding angle value; the seat back angle sensor 8 sends the seat inclination data to the controller 5; after processing, the controller 5 controls the motor 103 to rotate forward or reverse, thereby controlling the height of the adjustment slide 3.

[0052] The specific working process of the utility model is as follows:

[0053] The human body state sensor 6 can detect the shoulder height of the passenger; the seat position sensor 7 can detect the front and rear stroke position information of the seat; the seat back angle sensor 8 can detect the inclination angle of the chair back 901 of the seat 9; the controller 5 receives the shoulder height information and the seat position information for processing, obtains the position data adjusted by the safety belt height adjuster 1, drives the motor 103 of the height adjuster 1 to perform height adjustment; the motor 103 controls the forward rotation or reverse rotation of the screw rod 2, thereby adjusting the height of the sliding block 3 in the vertical direction; the sliding block 3 is fixedly connected with a safety belt hook; the safety belt is connected on the safety belt hook, thereby being capable of adjusting the safety belt height.

[0054] The utility model has been described exemplarily above in combination with the drawings. Apparently, the specific implementation of the utility model is not limited by the above-mentioned mode. As long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model; or the above-mentioned concept and technical scheme of the utility model are directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.

Claims

1. A seat belt automatic adjustment device characterized by: Including height adjuster (1), the height adjuster (1) includes screw rod (2), the screw rod (2) is connected with drive assembly and adjusting slider (3) respectively, the adjusting slider (3) is connected with safety belt hook, safety belt is connected on the safety belt hook, the height adjuster (1) is equipped on automobile B column (4), the drive assembly is connected with controller (5), the controller (5) is connected with human body state sensor (6), seat position sensor (7) and seat backrest angle sensor (8) respectively.

2. A seat belt automatic adjustment device according to claim 1, characterized in that: The height adjuster (1) includes installation shell (101), the installation shell (101) is equipped with sliding slot (102), the drive assembly includes motor (103), the motor (103) is equipped at the bottom of the installation shell (101), the top of the installation shell (101) is equipped with limit block (104), the limit block (104) is equipped with limit hole, one end of the screw rod (2) is connected with the motor (103), the other end of the screw rod (2) is equipped in the limit hole, the adjusting slider (3) is connected on the screw rod (2), and the adjusting slider (3) is equipped in the sliding slot (102).

3. A seat belt automatic adjustment device according to claim 2, wherein: The adjusting slider (3) is equipped with threaded hole, the threaded hole is equipped with internal thread, the screw rod (2) is equipped with external thread, the screw rod (2) is equipped in the threaded hole, the internal thread is matched with external thread.

4. A seat belt automatic adjustment device according to any one of claims 2-3, characterized in that: One side of the automobile B column (4) is equipped with seat (9), the human body state sensor (6) includes infrared array sensor, the human body state sensor (6) is equipped on the installation shell (101), and is equipped at one side of the seat (9).

5. A seat belt automatic adjustment device according to claim 4, wherein: One side of the seat (9) is equipped with automobile roof trim panel (10), the automobile roof trim panel (10) is equipped with 3D ToF camera (601).

6. A seat belt automatic adjustment device according to claim 5, wherein: The bottom of the seat (9) is equipped with slide rail (11), the slide rail (11) includes lower rail (111), the lower rail (111) is equipped with upper rail (112), the seat position sensor (7) includes hall sensor (113) and magnet (114), the hall sensor (113) is equipped on the lower rail (111), the magnet (114) is equipped on the upper rail (112), the magnet (114) is equipped at one side of the hall sensor (113).

7. A seat belt automatic adjustment device according to claim 6, wherein: The lower rail (111) includes first side plate (115), the upper rail (112) includes second side plate (117), the first side plate (115) and the second side plate (117) are equipped with let place groove (116), the hall sensor (113) is equipped on the first side plate (115), the magnet (114) is equipped on the second side plate (117).

8. A seat belt automatic adjustment device according to any one of claims 5 to 7, characterized in that: The seat (9) includes chair back (901), the seat backrest angle sensor (8) includes digital inclinometer, the seat backrest angle sensor (8) is equipped in the chair back (901).

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