Safety belt releasing device and system and automobile

Abstract

The invention relates to the technical field of automobile seat safety, and provides a safety belt releasing device and system and an automobile. The safety belt releasing device comprises a device main body, which is provided with a cavity, and two opposite openings are arranged on the cavity; the releasing mechanism is fixedly arranged at the position, close to one opening, in the cavity and used for being separated from the device body according to an external trigger signal; the locking mechanism is arranged in the cavity, at least two ends of the locking mechanism abut against the releasing mechanism and the other opening in sequence, the locking mechanism is used for being in locking connection with an insertion piece which is externally inserted into the other opening, and under the condition that the releasing mechanism is separated from the device body, the locking mechanism is disconnected with the insertion piece; the insert can be disengaged from the device body from the opening. The effect of rapidly unlocking the safety belt in an emergency scene is achieved, so that it is ensured that a passenger can be rapidly separated from the vehicle, and the risk that the passenger is secondarily injured in the vehicle is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automobile seat safety, and in particular to a seat belt release device, system and automobile. Background Art

[0002] With the development of the automobile industry and the popularization of transportation, automobile safety has become a focus of people's attention. As an important device in the automobile safety system, seat belts can effectively restrain passengers when a car collides, prevent passengers from having a secondary collision in the vehicle, and thus reduce passenger casualties. However, in actual use, seat belts also have some problems. For example, after detecting a collision signal, the existing seat belt system restrains passengers by controlling the locking mechanism of the seat belt buckle. However, in some unexpected scenarios, the seat belt buckle may get stuck, making it impossible for the passenger to get rid of it. At this time, if the passenger needs to leave the vehicle as soon as possible, this may cause the passenger to be trapped in the car, thereby putting the passenger in danger and increasing the risk of casualties.

[0003] Therefore, in order to avoid the situation where passengers are unable to evacuate the car in time because the seat belts cannot be unfastened after a car collision, it is necessary to make further improvements to the seat belts. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a seat belt release device, system and automobile to solve the problem in the prior art that the seat belt system cannot be unlocked in some unexpected scenarios, resulting in low safety.

[0005] According to a first aspect of an embodiment of the present application, a seat belt release device is provided, comprising: a device body having a cavity with two opposite openings; a release mechanism fixedly arranged in the cavity near one of the openings, for detaching from the device body according to an external trigger signal; a locking mechanism arranged in the cavity and having at least two ends abutting against the release mechanism and the other opening in turn, for lockingly connecting with an insert inserted into the other opening from the outside, wherein when the release mechanism detaches from the device body, the locking mechanism is disconnected from the insert, so that the insert can detach from the device body from the opening.

[0006] According to a second aspect of an embodiment of the present application, a seat belt release system is provided, which includes a seat sensor, a collision sensor, a controller and a seat belt release device according to any one of claims 1 to 8, wherein the seat sensor and the collision sensor are respectively connected to the controller, and the controller is connected to the seat belt release device. When the controller receives valid detection signals sent by the seat sensor and the collision sensor, the locking mechanism in the seat belt release device is controlled to be disconnected from the insert, and the valid detection signal includes a signal indicating that a person is sitting detected by the seat sensor and a collision signal detected by the collision sensor.

[0007] A third aspect of the embodiments of the present application provides a car, comprising the above-mentioned seat belt release system.

[0008] Compared with the prior art, the beneficial effects of the embodiments of the present application are as follows: the above-mentioned seat belt release device is through a device body, the device body has a cavity, and two opposite openings are provided on the cavity, and a release mechanism and a locking mechanism are provided in the cavity of the device body, the release mechanism is fixedly arranged at a position close to one of the openings, and is used to detach from the device body according to an external trigger signal, and the locking mechanism has at least two ends abutting against the release mechanism and the other opening in turn, and is used to be locked and connected with an insert inserted into the other opening from the outside, and when the release mechanism detaches from the device body, the locking mechanism is disconnected from the insert, so that the insert detaches from the device body from the opening, thereby achieving the effect of unlocking the seat belt, thereby ensuring that the passenger can quickly detach from the vehicle, and reducing the risk of secondary injury to the passenger in the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0010] Figure 1 is a schematic cross-sectional structure diagram of a seat belt release device provided in an embodiment of the present application;

[0011] Figure 2 is a state change diagram of a release process of a seat belt release device provided in an embodiment of the present application;

[0012] Figure 3 is a schematic diagram of the architecture of a seat belt release system provided in an embodiment of the present application;

[0013] Figure 4 It is a logical flow diagram of the controller determining the vehicle state provided in the embodiment of the present application;

[0014] Figure 5 It is a schematic diagram of the structure of the controller provided in the embodiment of the present application.

[0015] Explanation of the reference numerals: 1. Seat belt release device; 11. Device body; 12. Release mechanism; 121. Fuse box; 122. First spring; 123. Bolt; 13. Locking mechanism; 131. Slider; 132. Second spring; 133. Joint; 134. Limit block; 14. Insert; 2. Seat sensor; 3. Collision sensor; 4. Controller. DETAILED DESCRIPTION

[0016] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0017] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0018] In the prior art, the seat belt system mainly consists of a seat belt, a seat belt buckle and the vehicle's electronic control system. When a vehicle collides, the vehicle's electronic control system detects the collision signal and controls the locking mechanism of the seat belt buckle to lock the seat belt buckle, thereby restraining the passenger. However, this technology has a major problem, that is, in some cases, the seat belt buckle may get stuck, resulting in the passenger being unable to escape in time.

[0019] In view of the above problems, in some embodiments of the present application, a seat belt release device 1 is provided, comprising a device body 11, a release mechanism 12 and a locking mechanism 13. The device body 11 is provided with a cavity inside and has two opposite openings. The release mechanism 12 is fixed at a position close to one opening and is used to be separated from the device body 11 according to an external signal. The locking mechanism 13 is used to lock the insert 134 inserted into the other opening and disconnect the insert 134 after the release mechanism 12 is separated. In practical applications, the seat belt release device 1 can be connected to the seat belt. When a serious collision occurs in the car, the release mechanism 12 is controlled to be separated from the device body 11 by sending a signal to the seat belt release device 1, so that the insert 134 can be separated from the device body 11 from the opening, and the seat belt is automatically unlocked, ensuring that the passenger can quickly leave the vehicle, reducing the risk of the passenger being trapped in the vehicle and suffering secondary injuries.

[0020] See also Figure 1 and Figure 2In a first embodiment of the present application, a seat belt release device 1 is provided, which at least includes a device body 11, the device body 11 has a cavity, the cavity is provided with two opposite openings, and a release mechanism 12 and a locking mechanism 13 are provided in the cavity of the device body 11, and the release mechanism 12 is fixedly arranged near one of the openings (for example Figure 1 The locking mechanism 13 is located at an opening above the cavity in the middle of the cavity, and is used to detach from the device body 11 according to an external trigger signal. At least two ends of the locking mechanism 13 are respectively against the release mechanism 12 and another opening (for example Figure 1 The locking mechanism 13 is located at an opening below the cavity and is used to be locked and connected with an insert 134 inserted into another opening from the outside. When the release mechanism 12 is separated from the device body 11, the locking mechanism 13 is disconnected from the insert 134.

[0021] The working principle of the seat belt release device 1 provided in the embodiment of the present application is that: in the cavity of the device body 11, the two ends of the locking mechanism 13 abut against the positions of the release mechanism 12 and another opening to maintain a fixed state in the cavity, and are locked and connected with the insert 134 inserted in the other opening, so that the insert 134 is connected to the device body 11. When the seat belt needs to be released, a signal is sent to the release mechanism 12 to trigger the release mechanism 12 to detach from the device body, so that the locking mechanism 13 will lose support at the end abutting against the release mechanism 12, and the locking mechanism 13 will change from a fixed state to an active state in the cavity, and then the locking mechanism 13 will be disconnected from the insert 134. Therefore, the effect of automatically releasing the seat belt can be achieved by connecting the seat belt release device 1 to the seat belt.

[0022] The embodiment of the present application uses a device body 11, which has a cavity with two opposite openings. A release mechanism 12 and a locking mechanism 13 are provided in the cavity of the device body 11. The release mechanism 12 is fixedly arranged at a position close to one of the openings, and is used to detach from the device body 11 according to an external trigger signal. The locking mechanism 13 has at least two ends that successively abut against the release mechanism 12 and the other opening, and is used to be locked and connected with an insert 134 inserted into the other opening from the outside. When the release mechanism 12 detaches from the device body 11, the locking mechanism 13 is disconnected from the insert 134, so that the insert 134 detaches from the device body 11 from the opening, thereby achieving the effect of unlocking the seat belt, thereby ensuring that the passenger can quickly detach from the vehicle, and reducing the risk of secondary injury to the passenger in the vehicle.

[0023] The release mechanism 12 is fixedly arranged in the cavity at a position close to one of the openings. On the one hand, it is used to provide a support position for the abutment of one end of the locking mechanism 13. On the other hand, it is used to be triggered by a signal to separate from the device body 11, so that one end of the locking mechanism 13 loses support, breaking the state in which both ends of the locking mechanism 13 are abutted in the cavity, forcing the locking mechanism to disconnect from the insert 134 inserted from the outside in the other opening.

[0024] In practical applications, the specific implementation of the release mechanism 12 is not unique.

[0025] In some optional embodiments, the release mechanism 12 includes a fuse box 121 and a first spring 122. The fuse box 121 is fixedly connected to one of the openings of the cavity. The first spring 122 is in a compressed state, and one end of the first spring 122 abuts against the fuse box 121, and the other end of the first spring 122 abuts against the locking mechanism 13. When the fuse box 121 melts, the first spring 122 is in a released state and detaches from the device body 11.

[0026] In practice, the structure of the fuse box 121 includes but is not limited to the fuse box 121 shell, the fuse assembly and the signal trigger circuit. The shape of the fuse box 121 shell is adapted to the opening, or the fuse box 121 shell is provided with a connection structure or device matching the opening for fixing at the opening position; the fuse assembly can be made of a metal with a moderate melting point, for example, the fuse assembly is a tin-lead alloy fuse, and the two ends of the fuse are connected to the signal trigger circuit through wires, the signal trigger circuit is connected to an external control device to control the melting of the fuse, and the trigger circuit includes a heating element (such as a resistance wire) for heating the fuse after receiving an external signal.

[0027] In addition, the first spring 122 may be a compression spring, which is disposed between the fuse box 121 and the locking mechanism 13 and is in a compressed state, providing disengagement power for the fuse box 121. Specifically, the fuse box 121 is fixed to the opening through the fuse and the outer shell structure of the fuse box 121, and the first spring 122 is in a compressed state. When an external control device (such as a controller) sends a signal, the signal triggers the circuit to start the heating element, and the heating element heats the fuse to the melting point, and the fuse breaks. After the fuse breaks, the first spring 122 releases its elastic force, pushes the fuse box 121 out of the opening of the device body 11, and separates it from the opening, thereby achieving the effect of the release mechanism separating from the device body 11.

[0028] In the embodiment of the present application, the melting of the fuse box 121 triggers the release of the first spring 122 from the compressed state, and the elastic force of the first spring 122 is used to separate the fuse box 121 and the first spring 122 itself from the device body 11. This not only quickly and reliably realizes the function of separating the release mechanism 12 from the device body 11, but also makes the locking mechanism 13 lose support at one end of the release mechanism 12, thereby forcing the locking mechanism 13 to be disconnected from the insert 134, so as to achieve the effect of releasing the seat belt.

[0029] In some optional embodiments, the release mechanism 12 also includes a bolt 123, which includes a screw head and a screw rod, which is vertically connected to the screw head, and the screw head is provided with a thread and at least one through hole, and one of the openings of the cavity is provided with a thread matching the screw head, and the bolt 123 is fastened to one of the openings by matching the screw head with the thread of the opening, and the screw rod is inserted into the cavity, and a fuse box 121 is fixed on the outward end of each through hole, and the fuse box 121 corresponds to a first spring 122, and one end of the first spring 122 is inserted into the inward end of the through hole and abuts against the fuse box 121.

[0030] The bolt 123 here is the same in shape as the ordinary bolt 123, with a screw head and a screw rod, but the difference is that: the screw head in this embodiment is provided with threads, while the screw rod is not provided with threads, the screw head is used to be fixed on the opening through a threaded connection, and the screw rod is used to extend into the cavity, corresponding to the locking mechanism 13; in addition, at least one through hole is provided on the screw head, and the through hole passes through the screw head along the length direction of the screw rod, and optionally, each through hole ring is arranged around the screw rod.

[0031] In actual application, the fuse box 121 is fixed on the opening of the outward end of the through hole (i.e., the end away from the cavity), and the first spring 122 is inserted into the opening of the inward end of the through hole, so that one end of the first spring 122 abuts against the fuse box 121, and the other end abuts against the locking mechanism 13, and the first spring 122 is in a compressed state. When the fuse box 121 melts due to the signal trigger, the elastic force of the first spring 122 bounces the fuse box 121 away from the bolt 123, thereby causing the locking mechanism 13 to lose support, forcing the locking mechanism 13 to be disconnected from the insert 134.

[0032] The embodiment of the present application adds a bolt 123 as a fixing basis for the release mechanism 12 in the unprecedented open position, and the screw rod of the bolt 123 extends into the cavity to increase the reliability of the abutment between the locking mechanism 13 and the first spring 122, avoiding the locking mechanism 13 and the first spring 122 from slipping due to factors such as spring shaking, thereby increasing the stability of the abutment between the locking mechanism 13 and the release mechanism 12.

[0033] The locking mechanism 13 is maintained in a fixed state in the cavity by abutting the release mechanism 12 and another opening position of the cavity at both ends, and is locked and connected with an insert 134 inserted in another opening of the cavity. When the release mechanism 12 is disengaged from the opening due to a signal trigger, the locking mechanism 13 will lose the abutment support of the release mechanism 12. At this time, the locking mechanism 13 will change from a fixed state to an active state, thereby unlocking the connection with the insert 134, that is, disconnecting from the insert 134, thereby achieving an effect that the insert 134 can be separated from the device body 11.

[0034] In practical applications, the specific implementation of the locking mechanism 13 is not unique.

[0035] In some optional embodiments, when the release mechanism 12 includes a fuse box 121 and a first spring 122, the locking mechanism 13 includes a slider 131, a second spring 132 and a coupling member 133, one axial end of the slider 131 abuts against the other end of the first spring 122, the other axial end of the slider 131 is provided with a first groove, the outer periphery of the first groove is provided with a flange, the second spring 132 is sleeved on the outer periphery of the first groove, and one end of the second spring 132 abuts against the flange, and the other end of the second spring 132 abuts flush with the notch of the first groove at the position of another opening of the cavity (specifically on the inner wall of the cavity where the opening is located), the coupling member 133 is arranged in the first groove and has at least two states of engagement and separation, when the coupling member 133 is in the engagement state, the coupling member 133 is locked and connected to the insert 134, and when the coupling member 133 is in the separation state, the coupling member 133 is disconnected from the insert 134.

[0036] Here, the second spring 132 may also preferably be a compression spring, and when the release mechanism 12 is not separated from the device body 11, one end of the slider 131 abuts against the other end of the first spring 122, the other end of the slider 131 abuts against the other opening of the cavity, and the second spring 132 sleeved on the slider 131 is also in a compressed state. Under the elastic force of the second spring 132, the slider 131 and the first spring 122 will be further tightened, and the locking mechanism 13 is in a relatively fixed state in the cavity; the notch of the first groove on the slider 131 is aligned with the other opening of the cavity, the coupling piece 133 in the first groove maintains a locking connection with the insert 134 inserted from the outside into the other opening of the cavity, and the coupling piece 133 is in a combined state. When the release mechanism 12 is separated from the device body 11, for example, the fuse box 121 melts, the first spring 122 is separated from the device body 11, and the locking mechanism 13 loses its supporting point. At this time, the locking mechanism 13 becomes movable in the cavity. Under the elastic force of the second spring 132, the slider 131 moves to the side of the release mechanism 12, and the slider 131 is separated from the coupling member 133. The coupling member 133 is in a separated state, thereby disconnecting the coupling member 133 from the insert 134.

[0037] The embodiment of the present application includes a slider 131 and a second spring 132 through a locking mechanism 13. One axial end of the slider 131 abuts against the other end of the first spring 122. The other axial end of the slider 131 is provided with a first groove and a coupling member 133. The outer periphery of the first groove is provided with a flange. The second spring 132 is sleeved on the outer periphery of the first groove, and one end of the second spring 132 abuts against the flange. The other end of the second spring 132 abuts against the notch of the first groove at the position of another opening of the cavity flush with the notch of the first groove. The coupling member 133 is arranged in the first groove and has at least There are two states: engaged and separated. When the coupling member 133 is in the engaged state, the coupling member 133 is locked and connected to the insert member 134. When the coupling member 133 is in the separated state, the coupling member 133 is disconnected from the insert member 134, thereby realizing the locking connection of the locking mechanism 13 with the insert member 134 when the release mechanism 12 is not separated from the device body 11, and the disconnection from the insert member 134 when the release mechanism 12 is separated from the device body 11, thereby ensuring the stability and operating efficiency of the device in different operating states.

[0038] In some optional embodiments, a support column is provided at the bottom of the first groove, and when the two halves of the engaging member 133 are in a combined state, the two halves of the engaging member 133 respectively abut against the support column.

[0039] In some optional embodiments, the coupling member 133 is divided into two halves, and a plurality of second grooves are provided on the outer periphery of the coupling member 133 along the extension and contraction direction of the second spring 132 (or the elastic force direction of the second compression spring), and a limit block 134 is provided between the outer periphery of the coupling member 133 and the inner wall of the first groove. When the limit block 134 is located between the outer periphery of the coupling member 133 and the inner wall of the first groove, the limit block 134 is respectively in contact with the outer periphery of the coupling member 133 and the inner wall of the first groove, and the two halves of the coupling member 133 are in a combined state; when the limit block 134 is located in the second groove, the two halves of the coupling member 133 are in a separated state.

[0040] The stopper 134 is between the outer periphery of the joint member 133 and the inner wall of the first groove. When the stopper 134 is in frictional contact with the outer periphery of the joint member 133 and the inner wall of the first groove, the slider 131, the stopper 134 and the joint member 133 remain in a relatively fixed stable state in the radial direction, and the two halves of the joint member 133 remain in a combined state in the first groove and are locked and connected with the insert 134. When the release mechanism 12 is separated from the device body 11, the slider 131 loses support when it abuts against the release mechanism 12. Under the elastic force of the second spring 132, the slider 131 begins to move toward the release mechanism 12, thereby driving the stopper 134 to move relative to the joint member 133 until the stopper 134 slides into the second groove. At this time, the slider 131 and the joint member 133 lose the support of the stopper 134 and are in a separated state, thereby causing the two halves of the joint member 133 to separate, thereby achieving the effect of disconnecting the joint member 133 from the insert 134. In this embodiment, the limiting block 134 may preferably be a steel ball or a spherical ball.

[0041] The embodiment of the present application is divided into two halves by the coupling member 133, and a plurality of second grooves are provided on the outer periphery of the coupling member 133 along the extension and contraction direction of the second spring 132 (or the elastic force direction of the second compression spring), and a limit block 134 is provided between the outer periphery of the coupling member 133 and the inner wall of the first groove. When the limit block 134 is located between the outer periphery of the coupling member 133 and the inner wall of the first groove, the limit block 134 is respectively in contact with the outer periphery of the coupling member 133 and the inner wall of the first groove, and the two halves of the coupling member 133 are in a combined state; when the limit block 134 is located in the second groove, the two halves of the coupling member 133 are in a separated state, so as to realize the rapid switching of locking and disconnection between the locking mechanism 13 and the insert 134, and ensure that in an emergency, the insert 134 can be separated from the device body 11, so as to ensure that the seat belt release device 1 effectively releases the seat belt.

[0042] In some optional embodiments, a support column is provided at the bottom of the first groove, and when the two halves of the engaging member 133 are in a combined state, the two halves of the engaging member 133 respectively abut against the support column.

[0043] The cross section of the support column is an inverted T-shaped column. The two halves of the joint piece 133 are closed and abut against the side wall of the column body of the support column in the combined state, ensuring the stability of the joint piece 133 in the first groove. In addition, when the slider 131 is separated from the joint piece 133, the support column can also drag the two halves of the joint piece 133 away from the insert 134 together, avoiding the situation where the insert 134 is stuck with the insert 134 and the insert 134 cannot be separated from the device body 11 in time, ensuring the reliability of the unlocking of the locking mechanism 13 and the connection with the insert 134.

[0044] The joint piece 133 may preferably be a steel sleeve, which is divided into two halves along the diameter direction. In practice, there is not only one way to lock the joint piece 133 and the insert piece 134. When the joint piece 133 is a steel sleeve, the steel sleeve and the insert piece 134 are connected by clamping or friction. For example, if the steel sleeve and the insert piece 134 are connected by clamping, the inner wall of the steel sleeve and the insert piece 134 are respectively provided with mutually matching clamping structures. When the two halves of the steel sleeve are in a combined state, the insert piece 134 is inserted into the steel sleeve to achieve mutual clamping connection. If the steel sleeve and the insert piece 134 are connected by friction, at least one of the inner wall of the steel sleeve and the outer side of the insert piece 134 is provided with a rough surface. The insert piece 134 is inserted into the steel sleeve. When the two halves of the steel sleeve are in a combined state, the inner wall of the steel sleeve and the outer side of the insert piece 134 are mutually clamped and fixed by friction. If the steel sleeve and the insert 134 are connected by a combination of a clamping connection and a friction connection, the inner wall of the steel sleeve and the insert 134 are both provided with threads, and the threads of the two are matched, and when the two halves of the steel sleeve are in a combined state, the insert 134 is threadedly connected to the steel sleeve. Of course, the joint 133 and the insert 134 can also be connected in other ways, not limited to the above-mentioned exemplary ways, and the embodiments of the present application are not limited to this.

[0045] In some optional embodiments, when the release mechanism 12 includes a fuse box 121, a first spring 122 and a bolt 123, a third groove is provided at one axial end of the slider 131, and the third groove cooperates with the screw rod. When the fuse box 121 is not melted, the screw rod is inserted into the third groove, and the other end of the first spring 122 abuts against the open end surface of the third groove.

[0046] When the slider 131 is in contact with the first spring 122, the screw is inserted into the third groove, which can prevent the slider 131 from being separated from the first spring 122 when it shakes, causing the slider 131 to lose support and mistakenly trigger the disconnection between the locking mechanism 13 and the insert 134, thereby improving the reliability of the contact between the slider 131 and the first spring 122.

[0047] According to the seat belt release device 1 provided in the embodiment of the present application, through the device body 11, the device body 11 has a cavity with two opposite openings, and a release mechanism 12 and a locking mechanism 13 are provided in the cavity of the device body 11, the release mechanism 12 is fixedly arranged at a position close to one of the openings, and is used to detach from the device body 11 according to an external trigger signal, and the locking mechanism 13 has at least two ends that abut against the release mechanism 12 and the other opening in turn, and is used to be locked and connected with an insert 134 inserted into the other opening from the outside, when the release mechanism 12 detaches from the device body 11, the locking mechanism 13 is disconnected from the insert 134, so that the insert 134 detaches from the device body 11 from the opening, so as to achieve the effect of unlocking the seat belt, so as to ensure that the passenger can quickly detach from the vehicle, and reduce the risk of secondary injury to the passenger in the vehicle; in addition, the seat belt release device 1 has a compact structure, low modification cost, is easy to be implemented in modern vehicles, and has a good value for promotion and application.

[0048] In practice, the seat belt release device 1 can be applied to the seat belt system of a car, the seat belt release device 1 is connected to the seat belt, the vehicle status is detected by the collision sensor 3 and the seat sensor 2, and the controller is used to analyze the signal detected by the sensor. When the controller receives the effective detection signal from the collision sensor 3 and the seat sensor 2, the seat belt release device 1 is controlled to disconnect, thereby quickly releasing the seat belt to avoid the situation where the seat belt cannot be opened in some emergency situations, thereby improving the safety of the car.

[0049] See also Figure 3 In a second embodiment of the present application, a seat belt release system is provided, including a seat sensor 2, a collision sensor 3, a controller 4 and a seat belt release device 1. The seat sensor 2 and the collision sensor 3 are respectively connected to the controller 4, and the controller 4 is connected to the seat belt release device 1. When the controller 4 receives valid detection signals sent by the seat sensor 2 and the collision sensor 3, the locking mechanism 13 in the seat belt release device 1 is controlled to be disconnected from the insert 134. The valid detection signals include a signal indicating that a person is sitting detected by the seat sensor 2 and a collision signal detected by the collision sensor 3.

[0050] The specific implementation of the seat belt release device 1 can refer to the above-mentioned first embodiment or some optional embodiments, which will not be described in detail here.

[0051] The seat sensor 2 is used to detect whether there is someone in the seat. The logical operation of the collision sensor 3 will only take effect when the seat sensor 2 detects someone, which is a prerequisite for the release of the seat belt. In this example, the seat sensor 2 can be at least one of a pressure sensor, a capacitive sensor, an optical sensor, an ultrasonic sensor, a temperature sensor, and a biosensor.

[0052] The collision sensor 3 is used to detect whether the car collides. In this embodiment, the collision sensor 3 includes but is not limited to an accelerometer, a force sensor, an axis gyroscope, and an inclination sensor.

[0053] The accelerometer is used to monitor the acceleration changes of the vehicle and detect whether there is a collision event. In the case of high acceleration changes, the seat belt system is triggered to unlock; in the case of low acceleration changes, it is considered a minor situation to avoid accidental release of the seat belt.

[0054] The force sensor is used to monitor the force of the seat belt and determine whether the seat belt is subjected to a large tension. In the high tension state, it means that the passenger is subjected to a large force in the collision and may not be able to untie the seat belt by himself, and the unlocking preparation action; in the low tension state, it means that there is no large external force and the system remains locked.

[0055] The gyroscope is used to monitor the rotational angular velocity of the vehicle, helping to detect whether the vehicle has experienced a rapid rotation or rollover in an accident. In the case of a high rotational angular velocity, it indicates that the vehicle may have experienced a more intense rotation or rollover accident, prompting you to unlock the seat belt; in the case of a low rotational angular velocity, it indicates that the vehicle is in a normal state and there is no need to unlock the seat belt.

[0056] The tilt sensor is used to monitor the tilt angle of the vehicle to determine whether the vehicle body tilts due to rollover or severe collision. In the case of a large tilt angle, it indicates that the vehicle has rolled over or rolled over, further confirming that the passengers need to unfasten the seat belts; in the case of a slight tilt angle, the seat belt release action will not be triggered.

[0057] The controller 4 may be a domain controller or a vehicle controller in a car, or may be a seat controller. For example, in an actual application scenario, the controller uses an NXPS32K series microcontroller integrated circuit as a control core, which can realize data collection and control of the seat sensor 2, the accelerometer, the force sensor, the axis gyroscope, and the inclination sensor.

[0058] In conjunction with some embodiments of the seat belt release device 1 described above, and referring to Figure 1 and Figure 2The seat belt release device 1 is mainly composed of a fuse box 121, a bolt 123, a first spring 122, a slider 131, a second spring 132, a steel ball, a joint piece 133 divided into two halves, and a bolt 123. The process of releasing the safety belt is mainly divided into three movement stages: in the first stage, after the seat belt release device 1 receives the signal sent by the controller 4, the fuse box 121 melts and the first spring 122 pops out; in the second stage, after the first spring 122 pops out, the slider 131 will push upward under the action of the second spring 132, thereby driving the two halves of the joint piece 133 to move upward; in the third stage, when the two halves of the joint piece 133 move upward, the steel ball between the slider 131 and the joint piece 133 will fill the groove on the joint piece 133. Since the joint piece 133 is composed of two halves, it can be disassembled by moving horizontally under the drive of the slider 131 at this time, so that the joint piece 133 is loosened and falls off, thereby disconnecting the joint piece 133 from the insert 134.

[0059] The embodiment of the present application collects vehicle status data through the seat sensor 2 and the collision sensor 3, and uses the controller 4 to analyze and process the data collected by various sensors to determine the current state of the car, thereby controlling the seat belt release device 1 to remain locked or disconnect to release the seat belt according to the state of the vehicle, so that the seat belt can be automatically released after a serious collision is detected, allowing passengers to quickly leave the vehicle and reduce the risk of casualties. At the same time, the system does not trigger the release of the seat belt when a minor collision is detected, avoiding malfunction of the seat belt system.

[0060] In the prior art, the seat belt system is mainly composed of a seat belt, a seat belt buckle and the electronic control system of the vehicle. When a vehicle collides, the electronic control system of the vehicle will detect the collision signal and control the locking mechanism of the seat belt buckle to lock the seat belt buckle, thereby restraining the passenger. However, there is a major problem with this technology, that is, in some cases, the seat belt buckle may get stuck, making it impossible for the passenger to escape in time. However, the design of the existing seat belt system does not take into account the need for passengers to not release the seat belt when the vehicle is in a minor collision, which may cause the seat belt system to malfunction and add unnecessary trouble.

[0061] In some optional embodiments, a method for controlling a seat belt release device is provided, comprising:

[0062] Step 1: The data collected by the seat sensor 2 and the collision sensor 3 are used to determine the state of the car;

[0063] Step 2: If the car is in a safe state or a minor collision state, control the seat belt release device 1 to remain in a locked state;

[0064] Step three, if the car is in a severe collision state, control the seat belt release device 1 to release the seat belt.

[0065] Specifically, the data collected by the seat sensor 2 includes two signals: whether there is someone on the seat and whether there is no one on the seat. In the case where the collision sensor 3 includes an accelerometer, a force sensor, an axis gyroscope and an inclination sensor, the accelerometer, the force sensor, the axis gyroscope, the inclination sensor and the force sensor are installed at corresponding positions of the car, and the data collected by the collision sensor 3 includes an acceleration signal detected by the accelerometer, a force value signal detected by the force sensor, an angular velocity signal detected by the axis gyroscope and an inclination signal detected by the inclination sensor.

[0066] Specifically, combined Figure 4 For example, if the controller 4 detects that the data collected by the seat sensor 2 is a signal indicating that a person is sitting, the data detected by the accelerometer is a high acceleration change, and the data collected by the inclination sensor or the axis gyroscope exceeds the threshold, for example, the angular velocity signal detected by the axis gyroscope is greater than or equal to the preset angular velocity threshold, and the inclination signal detected by the inclination sensor is greater than or equal to the preset inclination threshold, it means that the car has rolled over or tilted, and the data detected by the force sensor is a force value signal exceeding the preset force threshold, that is, the seat belt has a high tension, then it is determined that the car is currently in a severe collision state, and the controller 4 will release a high level to the seat belt release device 1, triggering the insert 134 to disengage from the device body 11, thereby releasing the seat belt. If the data detected by the three sensors, namely the accelerometer, the inclination sensor and the axial gyroscope, do not contain any accident status signals (including the data detected by the accelerometer showing that the acceleration change exceeds the threshold, the angular velocity signal detected by the axial gyroscope is less than the preset angular velocity threshold, and the inclination signal detected by the inclination sensor is less than the preset inclination threshold), then regardless of whether the force sensor is of high tension or low tension, the vehicle status is determined to be a safe status or a minor collision status, and the seat belt release device 1 is controlled to remain locked to avoid misoperation of the release device.

[0067] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0068] The above method for controlling the seat belt release device 1 can be applied to the above seat belt release system, and the controller 4 executes the above steps.

[0069] In some optional embodiments, see Figure 5The controller 4 at least includes: a processor 401, a memory 402, and a computer program 403 stored in the memory 402 and executable on the processor 401. When the processor 401 executes the computer program 403, the steps in the above-mentioned various method embodiments are implemented.

[0070] The controller 4 may include but is not limited to a processor 401 and a memory 402. Those skilled in the art will appreciate that Figure 5 The controller is merely an example and does not constitute a limitation of the controller, and may include more or fewer components than shown in the figure, or different components.

[0071] The processor 401 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0072] The memory 402 may be an internal storage unit of the controller, such as a hard disk or memory of the controller. The memory 402 may also be an external storage device of the controller, such as a plug-in hard disk equipped on the controller, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. The memory 402 may also include both an internal storage unit of the controller and an external storage device. The memory 402 is used to store computer programs and other programs and data required by the seat belt release system.

[0073] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional modules in the embodiment can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units.

[0074] If the integrated module is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. The computer program may include computer program code, and the computer program code may be in source code form, object code form, executable file or some intermediate form. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer readable medium does not include electric carrier signals and telecommunication signals.

[0075] In an application scenario, taking the seat belt release system including a controller that is an NXPS32K series microcontroller integrated circuit, and the collision sensor 3 including an accelerometer, a force sensor, an axis gyroscope, and an inclination sensor as an example, the detailed process of the above method for controlling the seat belt release device 1 is as follows:

[0076] System initialization step: Install the NXPS32K series microcontroller integrated circuit in the control panel of the car. When the vehicle is started, the NXPS32K series microcontroller integrated circuit completes the initialization and configures the parameters and thresholds of each sensor;

[0077] Data collection step: Install the accelerometer, force sensor, axis gyroscope, inclination sensor and force sensor at the corresponding position of the car. The control core periodically collects data from the above sensors;

[0078] In a data processing step, the controller processes the data collected in the data collection step through a preset algorithm to determine the safety status of the vehicle;

[0079] Decision-making and execution steps: if the seat sensor 2 detects that there is a passenger, the accelerometer detects a high acceleration change, and the inclination sensor or the axis gyroscope monitors that the vehicle has rolled or tilted, and the force sensor detects that the seat belt has a high tension, the system will determine that the vehicle has a severe collision. At this time, the controller will release a high level to the seat belt release device 1, thereby releasing the seat belt; if the three sensors of the accelerometer, the inclination sensor, and the axis gyroscope do not output a serious accident status signal to the controller, at this time, regardless of whether the force sensor has a high tension or a low tension, the system will determine that the vehicle has a minor collision, and the seat belt will remain locked to avoid misoperation of the release device.

[0080] In order to optimize the accuracy and response speed of the seat belt release, the method for controlling the seat belt release device 1 may further include: a feedback and adjustment step, adjusting the control strategy according to the feedback signal of the seat belt release device 1. For example, adjusting the control strategy includes but is not limited to adjusting the threshold value of the sensor.

[0081] The embodiment of the present application controls the seat belt release system by executing the steps of the method for controlling the seat belt release device 1 by the controller, which has at least the following beneficial effects compared with the existing seat belt system:

[0082] 1. By introducing accelerometers, force sensor axis gyroscopes and inclination sensors as collision sensors 3, accurate monitoring of vehicle status is achieved, which can effectively determine whether the vehicle has collided and the severity of the collision, and is more accurate in detecting collision signals, so as to respond more promptly and improve passenger safety;

[0083] 2. When a violent collision of the vehicle is detected, the seat belt release device 1 is controlled to automatically release the seat belt, so that the passengers can leave the vehicle as quickly as possible to avoid being trapped in the vehicle, thereby reducing the risk of casualties.

[0084] 3. If a minor collision is detected, the seat belt will not be released, thus avoiding the malfunction of the seat belt system and reducing unnecessary trouble;

[0085] 4. The controller executes the steps of the above method to control the seat belt release device 1, which can flexibly respond to different states of the car, thereby improving the adaptability and reliability of the system.

[0086] In a third embodiment of the present application, a car is provided, comprising the above-mentioned seat belt release system.

[0087] Specifically, since the seat belt release system has been described in detail in the above embodiments, it will not be repeated here.

[0088] The embodiment of the present application applies a seat belt release system to a car. In the event of a severe collision of the car, the automatic release system controlled by the controller can unlock the seat belt release device 1 by triggering a fuse, so that the seat belt is automatically disconnected and the seat belt is unlocked immediately, ensuring that the passengers can quickly leave the vehicle and reducing the risk of secondary injuries.

[0089] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A seat belt release device, characterized in that: include: The device body has a cavity with two opposite openings; a release mechanism, fixedly disposed in the cavity near one of the openings, for disengaging from the device body in response to an external trigger signal; The locking mechanism is arranged in the cavity and has at least two ends abutting against the release mechanism and another opening in turn, and is used for locking connection with an insert inserted from the outside into the other opening. When the release mechanism is detached from the device body, the locking mechanism is disconnected from the insert, so that the insert can be detached from the device body from the opening.

2. The seat belt release device according to claim 1, characterized in that: The release mechanism includes a fuse box and a first spring. The fuse box is fixedly connected to one of the openings. The first spring is in a compressed state, and one end of the first spring abuts against the fuse box, and the other end of the first spring abuts against the locking mechanism. When the fuse box melts, the first spring is in a released state and detaches from the device body.

3. The seat belt release device according to claim 2, characterized in that: The locking mechanism includes a slider, a second spring and a coupling member, wherein one axial end of the slider abuts against the other end of the first spring, the other axial end of the slider is provided with a first groove, the outer periphery of the first groove is provided with a flange, the second spring is sleeved on the outer periphery of the first groove, and one end of the second spring abuts against the flange, the other end of the second spring abuts against the position of another opening of the cavity flush with the other axial end of the slider, the coupling member is arranged in the first groove and has at least two states of engagement and separation, when the coupling member is in the engagement state, the coupling member is locked and connected to the insert, and when the coupling member is in the separation state, the coupling member is disconnected from the insert.

4. The seat belt release device according to claim 3, characterized in that: The release mechanism also includes a bolt, which includes a screw head and a screw rod, wherein the screw rod is vertically connected to the screw head, wherein the screw head is provided with a thread and at least one through hole, wherein one of the openings is provided with a thread matching the screw head, wherein the bolt is fastened to one of the openings via the screw head, wherein the screw rod is inserted into a cavity, wherein a fuse box is fixed on the outward end of each of the through holes, wherein the fuse box corresponds to a first spring, wherein one end of the first spring is inserted into the inward end of the through hole and abuts against the fuse box.

5. The seat belt release device according to claim 4, characterized in that: The engaging member is divided into two halves, and a plurality of second grooves are provided on the outer circumference of each half of the engaging member along the expansion and contraction direction of the second spring. A limit block is provided between the outer circumference of the engaging member and the inner wall of the first groove. When the limit block is located between the outer circumference of the engaging member and the inner wall of the first groove, the limit block is respectively in contact with the outer circumference of the engaging member and the inner wall of the first groove, and the two halves of the engaging member are in a combined state; when the limit block is located in the second groove, the two halves of the engaging member are in a separated state.

6. The seat belt release device according to claim 5, characterized in that: A supporting column is provided at the bottom of the first groove. When the two halves of the engaging member are in a combined state, the two halves of the engaging member rest against the supporting column respectively.

7. The seat belt release device according to claim 4, characterized in that: A third groove is provided at one axial end of the sliding block, and the third groove cooperates with the screw rod. When the fuse box is not melted, the screw rod is inserted into the third groove, and the other end of the first spring abuts against the open end surface of the third groove.

8. The seat belt release device according to any one of claims 3 to 7, characterized in that: The engaging member is a steel sleeve, and the inner wall of the steel sleeve is connected to the insert by snapping or friction.

9. A seat belt release system, characterized in that: The invention comprises a seat sensor, a collision sensor, a controller and a seat belt release device as claimed in any one of claims 1 to 8, wherein the seat sensor and the collision sensor are respectively connected to the controller, and the controller is connected to the seat belt release device. When the controller receives valid detection signals sent by the seat sensor and the collision sensor, the controller controls the locking mechanism in the seat belt release device to be disconnected from the insert, wherein the valid detection signal comprises a signal indicating that a person is sitting detected by the seat sensor and a collision signal detected by the collision sensor.

10. An automobile, characterized in that: Includes the seat belt release system as described in claim 9.

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