Fire unlocking device for vehicle and vehicle

Abstract

The application discloses a fire unlocking device for a vehicle and the vehicle, and relates to the field of vehicles. An elastic member is arranged to be compressed between a stop member and an unlocking member, and the unlocking member is arranged to be connected with a safety belt buckle of the vehicle. Part of a temperature-sensing limiting member and a temperature-sensing medium are accommodated in a temperature-sensing container. The temperature-sensing medium is arranged to expand under heat to push the temperature-sensing limiting member. The temperature-sensing limiting member is arranged to limit the unlocking member when the temperature of the temperature-sensing medium is less than a preset temperature value, and to unlock the unlocking member when the temperature of the temperature-sensing medium is greater than or equal to the preset temperature value. The elastic member is arranged to drive the unlocking member to move to unlock the safety belt of the vehicle when the unlocking member is unlocked by the temperature-sensing mechanism. Thus, the safety belt of the vehicle can be automatically unlocked when the vehicle catches fire, the risk that an occupant is trapped in the vehicle due to the safety belt being unable to be opened when the vehicle catches fire is reduced, the safety of the vehicle is improved, and no electric control components are involved, so that the problem of device failure caused by a line being burnt off is avoided, and the reliability is high.

Description

Technical Field

[0001] This invention relates to the field of vehicles, and more particularly to a fire unlocking device for a vehicle and the vehicle itself. Background Technology

[0002] When a vehicle catches fire, the fire spreads extremely quickly, especially in new energy vehicles. It can spread from a local fire to the entire vehicle in just a few seconds, leaving passengers with very little time to escape. Whether the occupants can evacuate safely in the first instance is crucial to reducing casualties. However, there are currently dangerous situations where passengers are trapped inside the vehicle because their seat belts cannot be opened when the vehicle catches fire.

[0003] The current mainstream solution is to use electronic sensors to detect sudden accidents such as fires or collisions, and then use electric devices to unlock or break the seat belts. However, vehicle fires spread extremely quickly. Once the fire burns through the wiring, the electronic sensors will lose their ability to detect, and the device for unlocking or breaking the seat belts will also fail, ultimately causing the seat belts to fail to unlock, thus preventing the occupants from getting out of the vehicle quickly. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a fire unlocking device for vehicles that can automatically unlock the seat belts of a vehicle when it is on fire, without involving electronic control components, thus avoiding the problem of device failure due to burnt-out wiring, and exhibiting high reliability.

[0005] A fire unlocking device for a vehicle according to the present invention includes: an unlocking member, an elastic member, and a stop member, wherein the elastic member is configured to be compressed between the stop member and the unlocking member, and the unlocking member is configured to be connected to the seat belt buckle of the vehicle; a temperature sensing mechanism includes: a temperature sensing container, a temperature sensing limiting member, and a temperature sensing medium, wherein a portion of the temperature sensing limiting member and the temperature sensing medium are housed in the temperature sensing container, the temperature sensing medium is configured to expand upon heating to push the temperature sensing limiting member, the temperature sensing limiting member is configured to limit the unlocking member when the temperature of the temperature sensing medium is less than a preset temperature value, and is configured to unlock the unlocking member when the temperature of the temperature sensing medium is greater than or equal to the preset temperature value; the elastic member is configured to drive the unlocking member to move to unlock the vehicle's seat belt when the unlocking member is unlocked by the temperature sensing mechanism.

[0006] The fire unlocking device for vehicles according to the present invention can automatically unlock the seat belts of a vehicle when the vehicle is on fire, reducing the risk of occupants being trapped inside the vehicle because the seat belts cannot be opened when the vehicle is on fire, thus improving vehicle safety. Moreover, it does not involve electronic control components, avoiding the problem of device failure due to burnt-out wiring, and has high reliability.

[0007] In some examples of the present invention, the unlocking member has a first mating notch, and the temperature-sensing limiting member is configured such that a portion of its structure can move into and out of the first mating notch to limit and unlock the unlocking member.

[0008] In some examples of the present invention, the temperature-sensing limiting member includes: a first sub-component, a second sub-component, and a fulcrum member. The first sub-component is rotatably placed on the fulcrum member, and the first sub-component is configured to limit the unlocking member when the temperature of the temperature-sensing medium is less than the preset temperature value. A portion of the second sub-component is housed in the temperature-sensing container. The temperature-sensing medium is configured to expand when heated to push the second sub-component. The second sub-component is configured to push the first sub-component during the pushing process to make the first sub-component rotate. The first sub-component is also configured to unlock the unlocking member when the temperature of the temperature-sensing medium is greater than or equal to the preset temperature value.

[0009] In some examples of the present invention, along the height direction of the fire unlocking device, a portion of the structure of the temperature-sensing limiting member is disposed above the unlocking member and configured to limit and unlock the unlocking member.

[0010] In some examples of the present invention, the temperature sensing mechanism further includes a temperature conductor that contacts the temperature sensing container and is configured to contact the battery of the vehicle.

[0011] In some examples of the present invention, the fire unlocking device for a vehicle further includes a vehicle speed sensing mechanism, the vehicle speed sensing mechanism including a speed sensing container and a speed sensing limiting member, the speed sensing container defining an air outlet and an air inlet communicating with the air outlet, the speed sensing limiting member being disposed in the air outlet and configured to be suspended by airflow to limit the unlocking member when the vehicle's moving speed is greater than a preset speed value, and configured to unlock the unlocking member when the vehicle's moving speed is less than or equal to the preset speed value.

[0012] In some examples of the present invention, the unlocking member has a second mating notch, and the speed-sensitive limiting member is configured such that at least a portion of its structure can move into and out of the second mating notch to limit and unlock the unlocking member.

[0013] In some examples of the present invention, there are multiple air inlets, and at least two of the air inlets are arranged around the height direction of the fire unlocking device as an axis. And / or, the inner wall of the air duct is formed with a boss protruding toward the inner side of the air duct, the boss being configured to support the unsuspended speed-sensing limiter.

[0014] In some examples of the invention, the unlocking member is further configured to connect with the door latch of the vehicle, and the elastic member is configured to drive the unlocking member to move to unlock the vehicle's seat belt and door when the unlocking member is unlocked by the temperature-sensing mechanism.

[0015] The vehicle according to the present invention includes the above-described fire unlocking device for the vehicle.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the fire unlocking device, seat belt buckle, door buckle, and cable according to the present invention; Figure 2 This is a schematic diagram of an embodiment of the temperature-sensing limiting member and unlocking member according to the present invention; Figure 3 This is a flowchart illustrating the unlocking logic of the fire unlocking device according to the present invention.

[0018] Figure label: Fire unlocking device 100; Unlocking component 10; First mating notch 11; Second mating notch 12; First rod 13; Second rod 14; 20 elastic components; 30 stop components; Temperature sensing mechanism 40; Temperature sensing container 41; Temperature sensing limit component 42; First sub-component 421; Second sub-component 422; Support component 423; First part structure 424; Second part structure 425; Fitting part 4251; Temperature sensing medium 43; Temperature conducting element 44; Vehicle speed sensing mechanism 50; speed sensing container 51; air duct 511; vertical section 5111; air inlet 512; boss 513; speed sensing limiter 52; Seatbelt buckle 60; door buckle 70; cable 80. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The following is for reference. Figures 1-3 A fire unlocking device 100 for a vehicle according to an embodiment of the present invention is described.

[0021] like Figures 1-2 As shown, the fire unlocking device 100 according to an embodiment of the present invention includes: an unlocking member 10, an elastic member 20, a stop member 30, and a temperature sensing mechanism 40.

[0022] The elastic element 20 is configured to compress between the stop element 30 and the unlocking element 10, and the unlocking element 10 is configured to connect with the vehicle's seat belt buckle 60.

[0023] The elastic element 20 can be constructed as a spring, elastic rubber, etc. The spring can be constructed as a coil spring, a butterfly spring, etc. The elastic element 20 is compressed between the stop member 30 and the unlocking member 10. The unlocking member 10 is connected to the seat belt buckle 60 of the vehicle. As some embodiments of this application, the unlocking member 10 can be connected to the seat belt buckle 60 through components such as a brake cable and a pull cable 80 (e.g., a steel wire cable). During the process of the elastic element 20 returning to its normal state, the elastic element 20 can push the unlocking member 10 to move. The movement of the unlocking member 10 can pull the seat belt buckle 60 through components such as a brake cable and a pull cable 80 (e.g., a steel wire cable) to unlock the seat belt.

[0024] The temperature sensing mechanism 40 includes a temperature sensing container 41, a temperature sensing limiting member 42, and a temperature sensing medium 43. Part of the temperature sensing limiting member 42 and the temperature sensing medium 43 are housed in the temperature sensing container 41. The temperature sensing medium 43 is configured to expand when heated to push the temperature sensing limiting member 42. The temperature sensing limiting member 42 is configured to limit the unlocking member 10 when the temperature of the temperature sensing medium 43 is less than a preset temperature value, and is configured to unlock the unlocking member 10 when the temperature of the temperature sensing medium 43 is greater than or equal to the preset temperature value.

[0025] A portion of the temperature-sensing limiting member 42 is housed within the temperature-sensing container 41, while another portion of the temperature-sensing limiting member 42 extends out of the temperature-sensing container 41. As some embodiments of this application, the temperature-sensing container 41 has a notch, and a portion of the structure of the temperature-sensing limiting member 42 extends out of the temperature-sensing container 41 from the notch. As some embodiments of this application, a sealing member is sandwiched between the inner wall of the notch and the temperature-sensing limiting member 42, and the sealing member can be configured as a sealing ring.

[0026] The temperature-sensing medium 43 is housed within the temperature-sensing container 41. The temperature-sensing medium 43 is configured to expand upon heating to push the temperature-sensing limiting member 42. The temperature-sensing medium 43 can be constructed as a medium with a certain coefficient of expansion. As the temperature of the temperature-sensing medium 43 increases, its volume gradually increases. In other words, the temperature and volume of the temperature-sensing medium 43 are positively correlated, so that the temperature-sensing medium 43 can expand upon heating. During the expansion process, the temperature-sensing medium 43 can push the temperature-sensing limiting member 42.

[0027] As some embodiments of this application, the temperature sensing medium 43 can be constructed as a liquid medium, such as gallium indium tin liquid metal, bismuth indium tin liquid metal, gallium-based multi-element alloy liquid metal, mercury, etc. As some embodiments of this application, the temperature sensing medium 43 can be constructed as a phase change medium, such as paraffin-based phase change medium, ester-based phase change material, etc. As some embodiments of this application, the temperature sensing medium 43 can be constructed as a solid medium, such as high-expansion ceramic, high-expansion glass, thermal bimetallic sheet (two metals with large differences in thermal expansion coefficients stacked together, which bends when heated), etc.

[0028] The temperature-sensing limiting member 42 is configured to limit the unlocking member 10 when the temperature of the temperature-sensing medium 43 is lower than a preset temperature value, and to unlock the unlocking member 10 when the temperature of the temperature-sensing medium 43 is greater than or equal to the preset temperature value. Specifically, when the temperature of the temperature-sensing medium 43 is lower than the preset temperature value, the temperature-sensing limiting member 42 limits the unlocking member 10. When the temperature-sensing limiting member 42 limits the unlocking member 10, the unlocking member 10 cannot move because it is limited. The elastic member 20 is compressed between the stop member 30 and the unlocking member 10, and the elastic member 20 cannot drive the unlocking member 10 to move. As the temperature of the temperature-sensing medium 43 rises, the temperature-sensing medium 43 gradually expands and pushes the temperature-sensing limiting member 42 to gradually move. During the process of the temperature-sensing medium 43 gradually expanding and pushing the temperature-sensing limiting member 42 to gradually move, the temperature-sensing limiting member 42 gradually unlocks the unlocking member 10. When the temperature of the temperature-sensing medium 43 is greater than or equal to the preset temperature value, the temperature-sensing limiting member 42 completely unlocks the unlocking member 10.

[0029] The elastic element 20 is configured to drive the unlocking element 10 to move and unlock the vehicle's seat belt when the unlocking element 10 is unlocked by the temperature sensing mechanism 40. Specifically, when the temperature of the temperature sensing medium 43 is greater than or equal to a preset temperature value, the temperature sensing limit element 42 completely unlocks the unlocking element 10. When the unlocking element 10 is unlocked by the temperature sensing mechanism 40, the elastic element 20 compressed between the stop element 30 and the unlocking element 10 can return to its normal state. During the process of the elastic element 20 returning to its normal state, the movement of the unlocking element 10 can unlock the vehicle's seat belt. For example, during the movement of the unlocking element 10, the seat belt buckle 60 can be pulled by components such as the brake cable and the cable 80 (e.g., a steel wire cable) to unlock the seat belt.

[0030] Specifically, when a vehicle catches fire, the temperature of the heat-sensing medium 43 gradually increases. As the temperature of the heat-sensing medium 43 increases, it gradually expands and pushes the heat-sensing limiting member 42. When the temperature of the heat-sensing medium 43 is greater than or equal to a preset temperature value, the heat-sensing limiting member 42 unlocks the unlocking member 10. When the unlocking member 10 is unlocked by the heat-sensing mechanism 40, the elastic member 20 compressed between the stop member 30 and the unlocking member 10 can return to its normal state. During the process of the elastic member 20 returning to its normal state, the unlocking member 10 moves to unlock the vehicle's seat belt. The fire unlocking device 100 proposed in this application can automatically sense the occurrence of a fire and automatically unlock the seat belt when a fire occurs in a vehicle, which has high safety. Furthermore, the fire unlocking device 100 proposed in this application is a purely mechanical structure, which does not involve sensors or electric devices, and will not fail due to burnt wiring, thus having high reliability.

[0031] Therefore, it can automatically unlock the vehicle's seat belts when the vehicle catches fire, reducing the risk of occupants being trapped inside the vehicle because the seat belts cannot be opened, thus improving vehicle safety. Moreover, it does not involve electronic control components, avoiding the problem of device failure due to burnt-out wiring, and has high reliability.

[0032] It should be noted that the preset temperature value can be set after experimental verification, and this application does not limit the specific value.

[0033] As some embodiments of this application, such as Figure 1 As shown, the unlocking component 10 includes a first rod 13 and a second rod 14. The first rod 13 and the second rod 14 are connected. The cross-sectional area of ​​the second rod 14 is larger than that of the first rod 13. For example, the second rod 14 and the first rod 13 are coaxially arranged. The diameter of the first rod 13 is smaller than that of the second rod 14. The first rod 13 passes through the stop member 30. The elastic member 20 is sleeved on the first rod 13 and compressed between the second rod 14 and the stop member 30.

[0034] In some embodiments of the present invention, such as Figures 1-2As shown, the unlocking member 10 has a first mating notch 11. The first mating notch 11 can be a groove or a through hole; this application does not limit this. The temperature-sensing limiting member 42 is configured such that a portion of its structure can move into and out of the first mating notch 11 to limit and unlock the unlocking member 10. Specifically, when the temperature of the temperature-sensing medium 43 is lower than a preset temperature value, a portion of the structure of the temperature-sensing limiting member 42 is located within the first mating notch 11 to limit the unlocking member 10. As the temperature of the temperature-sensing medium 43 increases, the temperature-sensing medium 43 gradually expands and pushes the temperature-sensing limiting member 42, causing the temperature-sensing limiting member 42 to gradually move out of the first mating notch 11. When the temperature-sensing limiting member 42 is completely removed from the first mating notch 11, the temperature-sensing limiting member 42 unlocks the unlocking member 10. This configuration allows the unlocking member 10 and the temperature-sensing limiting member 42 to fit together reasonably, enabling the temperature-sensing limiting member 42 to reliably switch between the limiting and unlocking states, and also simplifies the structure of the unlocking member 10 and makes it easier to manufacture.

[0035] In some embodiments of the present invention, such as Figure 1 As shown, the temperature-sensing limiting member 42 includes: a first sub-member 421, a second sub-member 422, and a fulcrum member 423. The first sub-member 421 is rotatably placed on the fulcrum member 423, and the first sub-member 421 is configured to limit the unlocking member 10 when the temperature of the temperature-sensing medium 43 is less than a preset temperature value. Part of the second sub-member 422 is housed in the temperature-sensing container 41. The temperature-sensing medium 43 is configured to expand when heated to push the second sub-member 422. The second sub-member 422 is configured to push the first sub-member 421 during the pushing process, so that the first sub-member 421 rotates. The first sub-member 421 is also configured to unlock the unlocking member 10 when the temperature of the temperature-sensing medium 43 is greater than or equal to the preset temperature value.

[0036] The fulcrum 423 provides a fulcrum for the first sub-component 421 to support it, and the first sub-component 421 can rotate around the fulcrum. The first sub-component 421 is configured to limit the unlocking member 10 when the temperature of the temperature sensing medium 43 is lower than a preset temperature value. Specifically, when the temperature of the temperature sensing medium 43 is lower than the preset temperature value, the first sub-component 421 limits the unlocking member 10. When the first sub-component 421 limits the unlocking member 10, the unlocking member 10 cannot move because it is limited, and the elastic member 20 is compressed between the stop member 30 and the unlocking member 10. The elastic member 20 cannot drive the unlocking member 10 to move.

[0037] The second sub-component 422 is partially housed in the temperature-sensing container 41. The temperature-sensing medium 43 is configured to expand upon heating to push the second sub-component 422. Specifically, the temperature-sensing medium 43 gradually expands and pushes the second sub-component 422. During the process of being pushed by the temperature-sensing medium 43, the second sub-component 422 can push the first sub-component 421, causing the first sub-component 421 to rotate around a fulcrum. As the temperature-sensing medium 43 gradually expands and gradually pushes the second sub-component 422, the second sub-component 422 can gradually push the first sub-component 421, causing the first sub-component 421 to rotate. When the temperature of the temperature-sensing medium 43 is greater than or equal to a preset temperature value, the first sub-component 421 rotates to the position of unlocking the unlocking member 10, thereby unlocking the unlocking member 10.

[0038] As some embodiments of this application, the first sub-component 421 is rotatably placed on the fulcrum 423, and a portion of the structure between the two ends of the first sub-component 421 contacts the fulcrum 423. The first sub-component 421 is configured such that when the temperature of the temperature-sensing medium 43 is less than a preset temperature value, one end of the first sub-component 421 limits the unlocking member 10. For example, when the temperature of the temperature-sensing medium 43 is less than the preset temperature value, one end of the first sub-component 421 can be located within the first mating notch 11 to limit the unlocking member 10. The second sub-component 422 is configured to push the other end of the first sub-component 421 during the process of being pushed by the temperature-sensing medium 43, so that the first sub-component 421 rotates around the fulcrum, so that one end of the first sub-component 421 gradually moves out of the first mating notch 11. When the temperature of the temperature-sensing medium is greater than or equal to the preset temperature value, one end of the first sub-component 421 completely moves out of the first mating notch 11, and the unlocking member 10 unlocks.

[0039] This design utilizes a lever principle combined with the temperature-sensing medium 43 to unlock the unlocking component 10. It features a compact structure and eliminates the need for electronic control components, thus avoiding device failure due to burnt-out wiring. This design ensures high reliability. Furthermore, this configuration allows the temperature-sensing container 41 and the temperature-sensing limiting component 42 to move along the height of the fire unlocking device 100 (i.e.,...). Figure 1 The Z-direction shown is located below the unlocking component 10, so it does not need to occupy the space above the unlocking component 10, and the space layout is reasonable.

[0040] In some embodiments of the present invention, such as Figure 2 As shown, along the height direction of the fire unlocking device 100 (i.e. Figure 1 (As shown in the Z direction), part of the structure of the temperature-sensing limiting member 42 is located above the unlocking member 10 and is configured to limit and unlock the unlocking member 10.

[0041] As some embodiments of this application, such as Figure 2As shown, the temperature-sensing limiting member 42 is divided into two parts. The first part, structure 424, is housed inside the temperature-sensing container 41, and the second part, structure 425, is located outside the temperature-sensing container 41 and connected to the first part, structure 424. The second part, structure 425, has a mating part 4251, which extends along the height direction of the fire unlocking device 100 (i.e., Figure 1 (As shown in the Z direction), the mating part 4251 is located above the unlocking member 10. When the temperature of the temperature sensing medium 43 is less than the preset temperature value, the mating part 4251 limits the unlocking member 10. For example, at least a part of the structure of the mating part 4251 is located in the first mating notch 11 to limit the unlocking member 10. As the temperature of the temperature sensing medium 43 increases, the temperature sensing medium 43 gradually expands and pushes the temperature sensing limiting member 42 upward to unlock the unlocking member 10. For example, as the temperature sensing limiting member 42 gradually moves upward, the mating part 4251 gradually moves out of the first mating notch 11. When the mating part 4251 completely moves out of the first mating notch 11, the temperature sensing limiting member 42 unlocks the unlocking member 10.

[0042] This design simplifies the structure of the temperature sensing limiter 42, reduces the risk of failure of the temperature sensing limiter 42, and facilitates the realization of the function of the temperature sensing mechanism 40.

[0043] In some embodiments of the present invention, such as Figure 1 As shown, the temperature sensing mechanism 40 also includes a temperature conductor 44, which contacts the temperature sensing container 41 and is configured to contact the vehicle's battery.

[0044] One end of the temperature-conducting component 44 can be attached to the temperature-sensing container 41. The temperature-conducting component 44 can be disposed on the temperature-sensing container 41 by means of, but not limited to, bonding, bolting, snap-fitting, etc. The temperature-conducting component 44 and the temperature-sensing container 41 can be in contact through thermally conductive adhesive or direct contact. The temperature-conducting component 44 is configured to be in contact with the vehicle's battery. For example, the other end of the temperature-conducting component 44 can be in contact with the vehicle's battery. As some embodiments of this application, the other end of the temperature-conducting component 44 can be in contact with the battery's outer casing. The temperature-conducting component 44 can be disposed on the battery's outer casing by means of, but not limited to, bonding, bolting, snap-fitting, etc. The temperature-conducting component 44 and the battery's outer casing can be in contact through thermally conductive adhesive or direct contact.

[0045] In some embodiments of this application, the material of the temperature-conducting element 44 may be, but is not limited to, copper, aluminum alloy, stainless steel, copper-graphite composite material, aluminum-silicon carbide composite material, etc. In some embodiments of this application, the material of the temperature-sensing container 41 may be metal. In some embodiments of this application, the temperature-sensing container 41 and the temperature-conducting element 44 are made of the same material, and in some embodiments of this application, the temperature-sensing container 41 and the temperature-conducting element 44 are integrally formed.

[0046] As some embodiments of this application, the heat-conducting element 44 is configured to come into contact with other flammable structures of the vehicle.

[0047] It is understandable that the battery is the most fire-prone component of a vehicle, and if the battery catches fire, the fire will spread rapidly. By setting up the heat-conducting element 44, when the battery catches fire, the heat-sensing medium 43 can respond quickly, thereby improving the response speed of the fire unlocking device 100 and improving the reliability of the fire unlocking device 100.

[0048] In some embodiments of the present invention, such as Figure 1 As shown, the fire unlocking device 100 also includes a vehicle speed sensing mechanism 50, which includes a speed sensing container 51 and a speed sensing limiting member 52. The speed sensing container 51 defines an air duct 511 and an air inlet 512 connected to the air duct 511. The speed sensing limiting member 52 is located in the air duct 511 and is configured to be suspended by the airflow to limit the unlocking member 10 when the vehicle's moving speed is greater than a preset speed value, and is configured to unlock the unlocking member 10 when the vehicle's moving speed is less than or equal to the preset speed value.

[0049] As some embodiments of this application, along the height direction of the fire unlocking device 100 (i.e. Figure 1 (As shown in the Z direction), the vehicle speed sensing mechanism 50 and the temperature sensing mechanism 40 are both located below the unlocking component 10. This arrangement does not require occupying the space above the unlocking component 10, resulting in a reasonable spatial layout.

[0050] The speed-sensitive container 51 defines an air duct 511 and an air inlet 512 connected to the air duct 511. Outside air can enter the air duct 511 through the air inlet 512. The speed-sensitive limiting member 52 is located in the air duct 511. The speed-sensitive limiting member 52 is configured to be suspended by the airflow when the vehicle's moving speed is greater than a preset speed value, thereby limiting the unlocking member 10. It can be understood that when the vehicle's moving speed is greater than the preset speed value, the speed-sensitive limiting member 52 in the air duct 511 is affected by the airflow wind pressure lift and cooperates with the unlocking member 10 to limit the unlocking member 10. When the vehicle's moving speed is less than or equal to the preset speed value, the air lift force on the speed-sensitive limiting member 52 is insufficient to support its own weight, and it moves downward. The speed-sensitive limiting member 52 separates from the unlocking member 10 to unlock the unlocking member 10.

[0051] The vehicle's moving speed can be understood as, but is not limited to, the vehicle's driving speed (forward or backward), and can also be understood as the speed when the vehicle rolls over. In other words, during the vehicle's rollover, the speed-sensing limiting component 52 in the air duct 511 may be affected by the airflow wind pressure lift and cooperate with the unlocking component 10 to limit the unlocking component 10.

[0052] By setting the vehicle speed sensing mechanism 50, the unlocking component 10 can be stopped when the vehicle's moving speed exceeds the preset speed value, thereby reducing the risk of the seat belt suddenly unlocking when the vehicle's moving speed exceeds the preset speed value, improving the reliability of the fire unlocking device 100 and enhancing driving safety.

[0053] It should be noted that the preset speed value can be set after experimental verification. For example, the preset speed value can be, but is not limited to, 10km / h, 15km / h, 20km / h, etc. This application does not limit the specific value.

[0054] As some embodiments of this application, such as Figure 1 As shown, the ventilation duct 511 includes a section along the height direction of the fire unlocking device 100 (i.e., Figure 1 The vertical track section 5111 extends in the Z direction (as shown). The speed-sensitive limiting member 52 is located in the vertical track section 5111. This arrangement facilitates the speed-sensitive limiting member 52 to cooperate with the unlocking member 10 to limit the unlocking member 10 under the influence of airflow wind pressure lift.

[0055] In some embodiments of the present invention, such as Figure 1 As shown, the unlocking member 10 has a second mating notch 12. The second mating notch 12 can be a groove or a through hole; this application does not limit this. The speed-sensitive limiting member 52 is configured such that at least a portion of its structure can move into and out of the second mating notch 12 to limit and unlock the unlocking member 10. Specifically, when the vehicle's moving speed is greater than a preset speed value, the speed-sensitive limiting member 52 is suspended by airflow, causing at least a portion of its structure to move into the second mating notch 12 to limit the unlocking member 10. When the vehicle's moving speed is less than or equal to the preset speed value, the air lift force on the speed-sensitive limiting member 52 is insufficient to support its own weight, causing it to move downwards to move out of the second mating notch 12 to unlock the unlocking member 10. This configuration allows the unlocking member 10 and the speed-sensitive limiting member 52 to fit together reasonably, enabling the speed-sensitive limiting member 52 to reliably switch between the limiting and unlocking states, and also simplifies the structure of the unlocking member 10 and makes it easier to manufacture.

[0056] In some embodiments of the present invention, there are multiple air inlets 512, with at least two air inlets 512 positioned along the height direction of the fire unlocking device 100 (i.e., Figure 1 The air inlets 512 are arranged around an axis (shown in the Z direction). As some embodiments of this application, all air inlets 512 are arranged with respect to the height of the fire unlocking device 100 (i.e., the Z direction shown). Figure 1 The Z-direction shown is arranged around the axis. This arrangement allows multiple air inlets 512 to face different directions, adapting to different vehicle movement states (forward, backward, rolling, etc.), ensuring reliable air intake, accurately identifying vehicle speed, and improving the reliability of the vehicle speed sensing mechanism 50.

[0057] In some embodiments of the present invention, such as Figure 1As shown, the inner wall of the air duct 511 has a protrusion 513 protruding towards the inner side of the air duct 511. The protrusion 513 is configured to support the unsuspended speed-sensing limiter 52. There can be multiple protrusions 513, which are arranged circumferentially, or the protrusions 513 can be constructed in a ring shape. By supporting the unsuspended speed-sensing limiter 52 with the protrusion 513, the unsuspended speed-sensing limiter 52 can be prevented from falling to the bottom of the air duct 511. This facilitates the speed-sensing limiter 52 to cooperate with the unlocking member 10 to limit the unlocking member 10 under the influence of airflow wind pressure lift. In addition, it can shorten the stroke of the speed-sensing limiter 52, reduce the risk of the speed-sensing limiter 52 getting stuck, and improve the reliability of the vehicle speed sensing mechanism 50.

[0058] In some embodiments of the present invention, such as Figure 1 As shown, the unlocking element 10 is also configured to connect with the vehicle door latch 70, and the elastic element 20 is configured to drive the unlocking element 10 to move to unlock the vehicle's seat belt and door when the unlocking element 10 is unlocked by the temperature sensing mechanism 40.

[0059] As some embodiments of this application, the unlocking component 10 can be connected to the door latch 70 via components such as a brake cable and a pull cable 80 (e.g., a steel wire cable). During the process of the elastic component 20 returning to its normal state, the elastic component 20 can push the unlocking component 10 to move. The movement of the unlocking component 10 can pull the door latch 70 via components such as the brake cable and the pull cable 80 (e.g., a steel wire cable) to unlock the door. This configuration can automatically unlock the vehicle's seat belts and doors when the vehicle is on fire, reducing the risk of occupants being trapped inside the vehicle due to the inability to open the seat belts and / or doors, thus improving vehicle safety. Furthermore, it does not involve electronic control components, avoiding the problem of device failure due to burnt-out wiring, and has high reliability.

[0060] As some embodiments of this application, the fire unlocking device 100 further includes: a housing, in which the unlocking component 10, the stop component 30, the temperature sensing mechanism 40, and the vehicle speed sensing mechanism 50 are all disposed. Specifically, the unlocking component 10 is movably disposed in the housing, and the stop component 30, the temperature sensing container 41, the fulcrum component 423, and the speed sensing container 51 are all fixedly disposed in the housing. This arrangement facilitates the disassembly and assembly of the fire unlocking device 100, reducing the difficulty of disassembling and assembling the fire unlocking device 100.

[0061] like Figure 3 As shown, the unlocking logic of the fire unlocking device 100 for vehicles proposed in this application can be: when the temperature of the temperature sensing medium 43 in the temperature sensing mechanism 40 is greater than or equal to a preset temperature value and the vehicle's moving speed is greater than a preset speed value, the unlocking component 10 is unlocked.

[0062] Specifically, when the temperature of the temperature-sensing medium 43 in the temperature-sensing mechanism 40 is greater than or equal to the preset temperature value, the temperature-sensing limit member 42 moves out of the first mating notch 11 of the unlocking member 10. When the vehicle's moving speed is greater than the preset speed value, the speed-sensing limit member 52 moves out of the second mating notch 12 of the unlocking member 10 to unlock the unlocking member 10. When the unlocking member 10 is unlocked, the elastic member 20 drives the unlocking member 10 to move to unlock the vehicle's seat belt.

[0063] The vehicle according to the present invention includes the fire unlocking device 100 for the vehicle described above. By applying the fire unlocking device 100 proposed in this application, the seat belt of the vehicle can be automatically unlocked when the vehicle catches fire, reducing the risk of occupants being trapped in the vehicle because the seat belt cannot be opened when the vehicle catches fire, improving the safety of the vehicle, and does not involve electronic control components, thus avoiding the problem of device failure due to burnt wiring, and has high reliability.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0065] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0066] In the description of this invention, "a plurality of" means two or more.

[0067] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0068] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fire unlocking device for a vehicle, characterized in that, include: The system includes an unlocking component, an elastic component, and a stop component, wherein the elastic component is configured to be compressed between the stop component and the unlocking component, and the unlocking component is configured to connect with the seatbelt buckle of the vehicle. A temperature sensing mechanism includes: a temperature sensing container, a temperature sensing limiting member, and a temperature sensing medium. A portion of the temperature sensing limiting member and the temperature sensing medium are housed in the temperature sensing container. The temperature sensing medium is configured to expand upon heating to push the temperature sensing limiting member. The temperature sensing limiting member is configured to limit the unlocking member when the temperature of the temperature sensing medium is less than a preset temperature value, and to unlock the unlocking member when the temperature of the temperature sensing medium is greater than or equal to the preset temperature value. The elastic element is configured to drive the unlocking element to move to unlock the vehicle's seat belt when the unlocking element is unlocked by the temperature-sensing mechanism.

2. The fire unlocking device for a vehicle according to claim 1, characterized in that, The unlocking component has a first mating notch, and the temperature-sensing limiting component is configured such that a portion of its structure can move into and out of the first mating notch to limit and unlock the unlocking component.

3. The fire unlocking device for a vehicle according to claim 1, characterized in that, The temperature-sensing limiting component includes: a first sub-component, a second sub-component, and a fulcrum component. The first sub-component is rotatably placed on the fulcrum component, and the first sub-component is configured to limit the unlocking component when the temperature of the temperature-sensing medium is less than the preset temperature value. A portion of the second sub-component is housed in the temperature-sensing container. The temperature-sensing medium is configured to expand when heated to push the second sub-component. The second sub-component is configured to push the first sub-component during the pushing process to make the first sub-component rotate. The first sub-component is also configured to unlock the unlocking component when the temperature of the temperature-sensing medium is greater than or equal to the preset temperature value.

4. The fire unlocking device for a vehicle according to claim 1, characterized in that, Along the height direction of the fire unlocking device, a portion of the structure of the temperature-sensing limiting member is located above the unlocking member and configured to limit and unlock the unlocking member.

5. The fire unlocking device for a vehicle according to claim 1, characterized in that, The temperature sensing mechanism further includes a temperature conductor that contacts the temperature sensing container and is configured to contact the vehicle's battery.

6. The fire unlocking device for a vehicle according to any one of claims 1-5, characterized in that, Also includes: A vehicle speed sensing mechanism, comprising: a speed sensing container and a speed sensing limiting member, wherein the speed sensing container defines an air outlet and an air inlet connected to the air outlet, the speed sensing limiting member is disposed in the air outlet and configured to be suspended by airflow to limit the unlocking member when the vehicle's moving speed is greater than a preset speed value, and configured to unlock the unlocking member when the vehicle's moving speed is less than or equal to the preset speed value.

7. The fire unlocking device for a vehicle according to claim 6, characterized in that, The unlocking member has a second mating notch, and the speed-sensitive limiting member is configured such that at least a portion of its structure can move into and out of the second mating notch to limit and unlock the unlocking member.

8. The fire unlocking device for a vehicle according to claim 6, characterized in that, There are multiple air inlets, with at least two air inlets arranged around the height direction of the fire unlocking device as an axis. And / or, the inner wall of the air duct is formed with a boss protruding toward the inner side of the air duct, the boss being configured to support the unsuspended speed-sensing limiter.

9. The fire unlocking device for a vehicle according to any one of claims 1-5, characterized in that, The unlocking component is also configured to connect to the door latch of the vehicle, and the elastic component is configured to drive the unlocking component to move to unlock the seat belt and door of the vehicle when the unlocking component is unlocked by the temperature sensing mechanism.

10. A vehicle, characterized in that, Includes a fire unlocking device for a vehicle according to any one of claims 1-9.

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