Safety belt furling and locking device

Abstract

The utility model discloses a safety belt furling and locking device, which relates to the technical field of safety belt locking and comprises a furling device outer box and a controller, a ratchet wheel is arranged outside the furling device outer box, and a damping component is arranged below the surface of the furling device outer box. And the damping assembly comprises sliding rod seats, sliding rods, sliding blocks, springs, connecting rods, mounting seats and damping shock absorbers, the sliding rods are connected between the sliding rod seats, the sliding blocks are arranged outside the sliding rods in a sliding mode, the sliding rods are sleeved with the springs, and the middle portions of the sliding blocks are connected with the connecting rods through rotating shafts. According to the safety belt furling and locking device, when the mounting base bears impact force and vibrates, the vibration changes the angle of the connecting rod on the sliding block, so that the sliding block extrudes the spring, the mounting base extrudes the damping shock absorber, and the influence of the vibration effect on the mounting base can be fully weakened; and the defect that the inclination angle sensor and the acceleration sensor are low in sensitivity when encountering large vibration is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of safety belt locking, in particular to a safety belt retracting and locking device. Background Art

[0002] The seat belt retractor is a device used to reel in the seat belt webbing. The seat belt can firmly fasten the occupants to the seat when the vehicle collides or uses emergency braking, preventing secondary collisions and avoiding or reducing the degree of injury to the driver and passengers. In order to ensure that the seat belt is not pulled out during a vehicle collision or emergency braking, a locking device is generally provided on the retractor.

[0003] The acceleration sensor in the existing DE seat belt retracting and locking device will affect its sensitivity when encountering a large vibration, resulting in deviation, resulting in the inability to realize the locking function, which greatly reduces the safety factor.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a seat belt retracting and locking device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a safety belt retracting and locking device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seat belt retracting and locking device, including a retractor outer box and a controller, a ratchet is arranged on the outside of the retractor outer box, and a shock absorbing assembly is arranged below the surface of the retractor outer box, the shock absorbing assembly includes a slide bar seat, a slide bar, a slider, a spring, a connecting rod, a mounting seat and a damping shock absorber, and a slide bar is connected between the slide bar seats, a slider is slidingly arranged on the outside of the slide bar, and a spring is sleeved on the outside of the slide bar, the middle part of the slider is connected to the connecting rod through a rotating shaft, and the other end of the connecting rod is connected to the mounting seat through a rotating shaft, damping shock absorbers are arranged on both sides of the bottom of the mounting seat, and an acceleration sensor and an inclination angle sensor are arranged on the top of the mounting seat from left to right in sequence, and the controller is arranged on the surface of the retractor outer box.

[0007] Furthermore, the ratchet is coaxially connected to the reel inside the reel outer box, and a transmission assembly is installed on the surface of the reel outer box.

[0008] Furthermore, the transmission assembly includes a ring frame, a support plate and a servo motor, and the support plate is fixed on the surface of the ring frame, and the servo motor is installed on the surface of the support plate.

[0009] Furthermore, the transmission assembly also includes a gear 1 and a gear ring, and the output shaft of the servo motor passes through the support plate and is connected to the gear 1, and the outer side of the gear 1 is connected to the gear ring.

[0010] Furthermore, the transmission assembly also includes gear 2 and a rack, and the inner side of the ring gear is also connected to gear 2, and the outer front ends of gear 1 and gear 2 are both connected to the rack.

[0011] Furthermore, the racks penetrate through the through grooves on the surface of the ring frame, and six racks are provided.

[0012] Furthermore, the number of gear 2 is five, and gear 2 is rotationally connected to the retractor outer box.

[0013] Furthermore, the tilt angle sensor, acceleration sensor and servo motor are all electrically connected to the controller, and the ring frame and the retractor outer box are fixedly connected.

[0014] The utility model provides a safety belt retracting and locking device, which has the following beneficial effects:

[0015] 1. When the mounting seat of the utility model bears the impact force and generates vibration, the vibration will change the angle of the connecting rod on the slider, so that the slider can squeeze the spring and the mounting seat can squeeze the damping shock absorber, which can fully reduce the impact of the vibration on the mounting seat and overcome the shortcomings of low sensitivity of the tilt angle sensor and the acceleration sensor when encountering large vibrations.

[0016] 2. The servo motor of the utility model drives gear 1 to rotate, gear 1 drives the gear ring to rotate five gear 2s, one gear 1 and five gear 2s respectively drive a rack to transmit, so that when the rack bites on the ratchet, the reel inside the reel outer box cannot rotate, thereby realizing the function of locking the seat belt, preventing the huge inertia force from throwing the occupant out of the seat when the car collides. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a safety belt retracting and locking device of the utility model;

[0018] Figure 2 The utility model is a safety belt retracting and locking device Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of a ring frame and a gear ring of a safety belt retracting and locking device.

[0020] In the figure: 1. retractor outer box; 2. ratchet; 3. transmission assembly; 301. ring frame; 302. support plate; 303. servo motor; 304. gear one; 305. ring gear; 306. gear two; 307. rack; 4. shock absorbing assembly; 401. slide bar seat; 402. slide bar; 403. slider; 404. spring; 405. connecting rod; 406. mounting seat; 407. damping shock absorber; 5. tilt angle sensor; 6. acceleration sensor; 7. controller. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] like Figure 1 As shown, a seat belt retracting and locking device includes a retractor outer box 1 and a controller 7, a ratchet 2 is arranged on the outside of the retractor outer box 1, and a shock absorbing assembly 4 is arranged below the surface of the retractor outer box 1, the ratchet 2 is coaxially connected to the reel inside the retractor outer box 1, and a transmission assembly 3 is installed on the surface of the retractor outer box 1, and the shock absorbing assembly 4 includes a slide bar seat 401, a slide bar 402, a slider 403, a spring 404, a connecting rod 405, a mounting seat 406 and a damping shock absorber 407, and the slide bar seat 401 is connected with the slide bar 402, and the outside of the slide bar 402 is connected to the outside of the slide bar 402. A slider 403 is provided for sliding, and a spring 404 is provided on the outer sleeve of the slider 402. The middle of the slider 403 is connected to a connecting rod 405 via a rotating shaft, and the other end of the connecting rod 405 is connected to a mounting seat 406 via a rotating shaft. Damping shock absorbers 407 are provided on both sides of the bottom of the mounting seat 406, and an acceleration sensor 6 and a tilt angle sensor 5 are provided on the top of the mounting seat 406 from left to right in sequence. A controller 7 is provided on the surface of the retractor outer box 1, and the tilt angle sensor 5, the acceleration sensor 6 and the servo motor 303 are all electrically connected to the controller 7.

[0023] The specific operation is as follows: when the mounting seat 406 bears the impact force and generates vibration, the vibration will change the angle of the connecting rod 405 on the slider 403, so that the slider 403 can be used to squeeze the spring 404, and the mounting seat 406 can be used to squeeze the damping shock absorber 407, which can fully reduce the impact of the vibration on the mounting seat 406 and overcome the shortcomings of low sensitivity of the tilt angle sensor 5 and the acceleration sensor 6 when encountering large vibrations.

[0024] like Figures 1 to 3As shown, the transmission assembly 3 includes a ring frame 301, a support plate 302 and a servo motor 303, and the support plate 302 is fixed to the surface of the ring frame 301, and the servo motor 303 is installed on the surface of the support plate 302. The transmission assembly 3 also includes a gear 1 304 and a ring gear 305, and the output shaft of the servo motor 303 passes through the support plate 302 and is connected to the gear 1 304, and the outer side of the gear 1 304 is connected to the ring gear 305. The transmission assembly 3 also includes a gear 2 306 and a rack 307, and the inner side of the ring gear 305 is also connected to the gear 2 306, and the outer front ends of the gears 1 304 and 306 are connected to the rack 307, and the rack 307 passes through the through groove on the surface of the ring frame 301, and six racks 307 are provided, and five gears 2 306 are provided, and the gear 2 306 is rotatably connected to the retractor outer box 1, and the ring frame 301 is fixedly connected to the retractor outer box 1.

[0025] The specific operation is as follows: the servo motor 303 drives the gear 1 304 to rotate, the gear 1 304 drives the gear ring 305 to transmit and make the five gear 2s 306 rotate, and one gear 1 304 and five gear 2s 306 respectively drive a rack 307 to transmit, so that when the rack 307 bites on the ratchet 2, the internal reel of the retractor outer box 1 cannot rotate, thereby realizing the function of locking the seat belt, preventing the huge inertia force from throwing the occupant out of the seat when the car has a collision accident.

[0026] In summary, when the seat belt retracting and locking device is used, first one end of the seat belt is fixed on the reel inside the retractor outer box 1, and then it is wound on the reel. When the vehicle collides with the vehicle and brakes suddenly or tilts, the tilt angle sensor 5 and the acceleration sensor 6 immediately output signals to the controller 7. After being processed by the controller 7, the servo motor 303 is controlled to work, and the servo motor 303 drives the gear 1 304 to rotate, and the gear 1 304 drives the gear ring 305 to drive the five gears 2 306 to rotate. At this time, one gear 1 304 and the five gears 2 306 drive a rack 307 to drive respectively, so that the rack 307 is guided by the through groove on the surface of the ring frame 301 to approach the ratchet 2 until it bites on the ratchet 2 so that the reel inside the retractor outer box 1 cannot rotate, thereby realizing the function of locking the seat belt, ensuring the safety factor of the device, and preventing the huge inertia force from throwing the occupant out of the seat when the car collides with the vehicle;

[0027] When the inclination angle sensor 5 and the acceleration sensor 6 encounter a large vibration during operation, the vibration will change the angle of the connecting rod 405 on the slider 403. The slider 403 and the mounting seat 406 will squeeze the spring 404 and the damping shock absorber 407 respectively, so that the generated vibration force will be decomposed and consumed, thereby achieving a shock absorption effect, ensuring the measurement accuracy of the inclination angle sensor 5 and the acceleration sensor 6, and avoiding deviations.

[0028] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A seat belt retracting and locking device, comprising a retractor outer box (1) and a controller (7), characterized in that: The retractor outer box (1) is provided with a ratchet (2) on the outside, and a shock absorbing assembly (4) is provided below the surface of the retractor outer box (1), the shock absorbing assembly (4) comprising a slide bar seat (401), a slide bar (402), a slider (403), a spring (404), a connecting rod (405), a mounting seat (406) and a damping shock absorber (407), and the slide bar seats (401) are connected with the slide bar (402), the slide bar (403) is slidably provided on the outside of the slide bar (402), and the slide bar seats (401) are provided with a slider (403) on the outside of the slide bar (402). The outer sleeve of (402) is provided with a spring (404), the middle part of the slider (403) is connected to a connecting rod (405) via a rotating shaft, and the other end of the connecting rod (405) is connected to a mounting seat (406) via a rotating shaft, damping shock absorbers (407) are provided on both sides of the bottom of the mounting seat (406), and an acceleration sensor (6) and an inclination angle sensor (5) are provided on the top of the mounting seat (406) from left to right in sequence, and the controller (7) is provided on the surface of the retractor outer box (1).

2. A seat belt retracting and locking device according to claim 1, characterized in that: The ratchet wheel (2) is coaxially connected to a reel inside the reel outer box (1), and a transmission assembly (3) is installed on the surface of the reel outer box (1).

3. A seat belt retracting and locking device according to claim 2, characterized in that: The transmission assembly (3) comprises a ring frame (301), a support plate (302) and a servo motor (303), wherein the support plate (302) is fixed on the surface of the ring frame (301), and the servo motor (303) is installed on the surface of the support plate (302).

4. A seat belt retracting and locking device according to claim 3, characterized in that: The transmission assembly (3) further comprises a gear one (304) and a gear ring (305), and the output shaft of the servo motor (303) passes through the support plate (302) and is connected to the gear one (304), and the outer side of the gear one (304) is connected to the gear ring (305).

5. A seat belt retracting and locking device according to claim 4, characterized in that: The transmission assembly (3) further comprises a second gear (306) and a rack (307), and the inner side of the ring gear (305) is also connected to the second gear (306), and the outer front ends of the first gear (304) and the second gear (306) are both connected to the rack (307).

6. A seat belt retracting and locking device according to claim 5, characterized in that: The racks (307) penetrate through the through grooves on the surface of the ring frame (301), and six racks (307) are provided.

7. A seat belt retracting and locking device according to claim 5, characterized in that: The number of gear 2 (306) is five, and the gear 2 (306) is rotationally connected to the retractor outer box (1).

8. A seat belt retracting and locking device according to claim 3, characterized in that: The tilt angle sensor (5), the acceleration sensor (6) and the servo motor (303) are all electrically connected to the controller (7), and the ring frame (301) and the retractor outer box (1) are fixedly connected.

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