Automatic crush type car door handrail device and car

Abstract

The utility model relates to an automatic crushing type car door handrail device and car, automatic crushing type car door handrail device includes crash protection piece, pressure control piece, crash protection piece pressure control piece all are fixed in the inside of car door apron, just pressure control piece is located between crash protection piece car door apron, through pressure control piece control crash protection piece pressure relief and take place deformation. Its beneficial effect is: the design of car door apron inside crash protection piece pressure control piece, daily use, through crash protection piece to replace traditional handrail to keep stable hardness, and in the collision emergency state, pressure control piece controls crash protection piece rapid pressure relief, and crash protection piece presents soft folding state, at this moment, the car door is extruded to the cabin by collision, and the originally hard handrail becomes soft pressureless structure, and when contacting with the passenger rib, rigid impact will not be generated, and the deformation of crash protection piece absorbs the collision energy, avoids rib injury.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, specifically to an automatic crushable door handle device and an automobile. Background Technology

[0002] In the field of automotive safety design, side-impact protection is a crucial aspect of ensuring occupant safety. With the increasing number of cars on the road and the persistently high rate of road accidents, chest injuries (especially to the ribs) in side-impact collisions are becoming increasingly prominent. Traditional car door armrests are often made of rigid materials (such as ABS plastic, modified PP, etc.) in a single molding process or by combining a metal frame with a plastic shell. Their structural rigidity must meet the requirements of daily armrest support, ensuring stability for occupants when gripping or leaning on them during entry, exit, and travel.

[0003] However, in a side-impact collision, the door is rapidly pushed into the passenger compartment by the impact of external force, and the protruding structure of the rigid armrest can become a potential source of injury. According to automotive safety crash test data, in a side-impact collision, the contact time between the door armrest and the occupant's ribs is extremely short (usually less than 0.1 seconds), but the rigid impact of the hard structure can easily lead to serious injuries such as rib fractures and internal organ contusions, especially for occupants with lower physical tolerance, such as children and the elderly, who are at higher risk of injury.

[0004] Currently, industry-wide measures for side-impact protection mainly focus on adding anti-collision beams inside the doors, optimizing the deployment logic of side airbags in the seats, and using energy-absorbing materials to fill the door interior. However, for the door armrest, a key component that comes into direct contact with the occupant's chest, there is still no solution that can meet the hardness requirements for daily use and eliminate rigid impact at the moment of collision.

[0005] The contradiction between the "functional rigidity" of traditional handrails and the requirement for "safety flexibility" in the event of a collision has become a technical pain point that urgently needs to be addressed. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing an automatic crushable car door handrail device. Through the design of inflation to maintain rigidity and burst valve to release pressure, it can achieve both daily use and protection of the human body in dangerous situations.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: The first aspect of this utility model is to provide an automatic crushable car door handrail device, including a collision protection component and a pressure control component; Both the collision protection component and the pressure control component are fixed to the inner side of the door panel, and the pressure control component is located between the collision protection component and the door panel. The pressure control component controls the collision protection component to depressurize and deform.

[0008] As a further technical solution, the collision protection component includes a body and a support component; The main body is a cavity structure filled with the support member; An opening on the main body corresponds to a first pressure relief port on the pressure control component.

[0009] As a further technical solution, the inner wall of the body is coated with an airtight polyurethane coating.

[0010] As a further technical solution, the support member is a mesh structure made of wire reinforcing bars.

[0011] As a further technical solution, the pressure control component includes a housing, a first valve core, a second valve core, and an igniter; The shell has a cavity structure; The first valve core and the second valve core are both disposed inside the housing, and one end of the first valve core and the inner wall of the housing enclose a medicine compartment, and there is a gap between the end of the first valve core away from the medicine compartment and the inner wall of the corresponding side of the housing; The igniter is installed on the outer wall of the housing and communicates with the medicine chamber. The high-temperature gas generated in the medicine chamber pushes the first valve core to move away from the igniter, so as to control the second pressure relief port on the first valve core to communicate with the first pressure relief port. The first pressure relief port is located on the second valve core. As a further technical solution, a first viewing port and a second viewing port are respectively provided on the two symmetrical walls of the shell; The first valve core portion is exposed in the first viewing port, and the first pressure relief port is exposed in the second viewing port.

[0012] As a further technical solution, the first valve core and the second valve core are stacked inside the housing, and the first valve core and the second valve core are bonded together.

[0013] As a further technical solution, the door panel is provided with a first armrest area and a second armrest area. The main body is fixedly installed in the first armrest area, and the door armrest half is installed in the second armrest area. The main body and the door armrest half are fixedly connected to form a door armrest.

[0014] As a further technical solution, the first pressure relief port is sealed with hot melt adhesive.

[0015] The second aspect of this utility model protects an automobile, including the automatic crushable door handle device described in the first aspect, wherein the pressure control element is signal-connected to the automobile airbag controller.

[0016] The beneficial effects of this utility model are: 1. The design of the collision protection components and pressure control components on the inner side of the door panel is as follows: During daily use, the collision protection components replace the traditional armrest to maintain stable rigidity; in the event of a collision, the pressure control components control the collision protection components to quickly depressurize, and the collision protection components are in a soft and folded state. At this time, the door is squeezed into the cabin by the collision, and the originally hard armrest becomes a soft and pressure-free structure. When it comes into contact with the occupant's ribs, it will not produce a rigid impact. Moreover, the deformation of the collision protection components absorbs the collision energy and avoids rib damage. 2. The specific structural design of the collision protection component: In normal state, the length of the support component is the same as the length of the collision protection component after it is unfolded. At this time, the support component is fully tensioned, and the hardness of the collision protection component is close to that of traditional PP handrails. There is no obvious deformation when the occupant grips or leans against it, and the user experience is the same as that of traditional handrails. When the collision protection component is not inflated, it is in a folded state. 3. The specific structural design of the pressure control component: When the side collision sensor detects a side collision signal, it sends a trigger signal to the igniter through the car airbag controller to trigger the pressure control component, thereby releasing the pressure of the collision protection component. This structure has a fast response speed. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an automatic crushable car door handrail device according to the present invention; Figure 2 for Figure 1 A structural diagram from the perspective of AA (Anti-Analog Devices). Figure 3 , Figure 4 These are structural schematic diagrams of the pressure control component from different perspectives; Figure 5 for Figure 4 A structural diagram from the perspective of the BB (Browser-Based Array).

[0018] The attached diagram lists the components represented by each number as follows: Collision protection component 1, main body 11, support component 12; Pressure control component 2, first pressure relief port 21, housing 22, first valve core 23, second valve core 24, igniter 25, propellant tank 26, second pressure relief port 27, first viewing port 28, second viewing port 29; 3. Door panel 3, First armrest area 31, Second armrest area 32, Door armrest half 33. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0022] Example 1 See Figure 1 , Figure 2 This embodiment provides an automatic crushable door armrest device, including a collision protection component 1 and a pressure control component 2; the collision protection component 1 and the pressure control component 2 are both fixed to the inner side of the door panel 3, and the pressure control component 2 is located between the collision protection component 1 and the door panel 3, and the collision protection component 1 is depressurized and deformed by the pressure control component 2.

[0023] This embodiment has a fast response speed to ensure that the pressure relief of the collision protection component 1 is completed before the door is squeezed into the occupant, thus achieving timely protection.

[0024] For example, the collision protection component 1 is an inflatable collision protection component. It is inflated during daily use to replace the function of the handrail on the car door. When a collision occurs, it deflates and deforms to avoid injury to the human body.

[0025] For example, the pressure control component 2 is an automatic hydraulic component.

[0026] See Figures 1-3 In the specific implementation process, the collision protection component 1 includes a body 11 and a support component 12; the body 11 is constructed as a cavity structure filled with the support component 12; an opening on the body 11 corresponds to the first pressure relief port 21 provided on the pressure control component 2.

[0027] For example, the body 11 is an airbag made of wear-resistant nylon fiber, and the inner wall of the airbag is coated with an airtight polyurethane coating to improve the airbag's sealing performance.

[0028] For example, the support member 12 is made of high-strength polyester yarn. When the airbag is inflated, the support member 12 is tensioned to limit the expansion shape of the airbag, so that the hardness of the collision protection member 1 is close to that of traditional PP. There is no obvious deformation when the occupant grips or leans on it, and the user experience is the same as that of traditional handrails.

[0029] For example, the support member 12 is a mesh structure made of wire tendons. When the airbag is not inflated, the wire tendons are folded (when inflated, the length of the wire tendons is the same as that of the airbag after it is deployed).

[0030] See Figures 3-5 In its specific implementation, the pressure control component 2 includes a housing 22, a first valve core 23, a second valve core 24, and an igniter 25. The housing 22 has a hollow structure. The first valve core 23 and the second valve core 24 are both located inside the housing 22, and one end of the first valve core 23 and the inner wall of the housing 22 enclose a medicine chamber 26. There is a gap between the end of the first valve core 23 away from the medicine chamber 26 and the inner wall of the corresponding side of the housing 22. The igniter 25 is installed on the outer wall of the housing 22 and communicates with the medicine chamber 26. The high-temperature gas generated in the medicine chamber 26 pushes the first valve core 23 to move away from the igniter 25, thereby controlling the second pressure relief port 27 on the first valve core 23 to communicate with the first pressure relief port 21. The first pressure relief port 21 is located on the second valve core 24.

[0031] For example, the housing 22, the first valve core 23, and the second valve core 24 are all made of metal. The igniter 25 is connected to the vehicle airbag controller (such as the acceleration sensor in the door and the B-pillar pressure sensor). When the vehicle side collision sensor detects a side collision signal, it feeds back to the vehicle airbag controller, which then controls the igniter 25 to work, thereby depressurizing the collision protection component 1 and reducing injury to passengers.

[0032] It should be noted that when the collision protection component 1 is used as a handrail in normal operation, the first pressure relief port 21 is sealed with hot melt adhesive. The hot melt adhesive has a melting point of 80-100℃ and remains sealed at normal temperatures to improve the sealing performance of the collision protection component 1. However, when a collision occurs and pressure relief is required, the hot melt adhesive sealing the first pressure relief port 21 melts under the action of high-temperature gas, allowing the collision protection component 1 to connect with the pressure control component 2. This allows the gas inside the collision protection component 1 to enter the pressure control component 2 through the first pressure relief port 21, and then enter the car door through the second pressure relief port 27 before being discharged into the air.

[0033] For example, the number of the first pressure relief port 21 and the second pressure relief port 27 are the same, for example, there can be two of each.

[0034] The medicine compartment 26 contains pyrotechnic agents. The agents in the medicine compartment 26 are ignited by the igniter 25. The high-temperature gas generated pushes the first valve core 23 to move away from the medicine compartment 26. At the same time, the high-temperature gas quickly melts the hot melt adhesive sealing the first pressure relief port 21, so as to relieve the pressure of the collision protection component 1 in a short time and ensure that the pressure relief of the collision protection component 1 is completed before the car door squeezes into the occupant.

[0035] See Figures 3-5 In the specific implementation process, a first viewing port 28 and a second viewing port 29 are respectively opened on the two symmetrical walls of the housing 22; the first valve core 23 is partially exposed in the first viewing port 28, and the first pressure relief port 21 is exposed in the second viewing port 29. On the one hand, this facilitates the connection between the collision protection component 1 and the pressure control component 2, and on the other hand, it facilitates the movement of the first valve core 23 to avoid interference from other components.

[0036] For example, the first valve core 23 and the second valve core 24 are stacked inside the housing 22, and the first valve core 23 and the second valve core 24 are bonded together. It should be noted that during normal use, the first valve core 23 and the second valve core 24 are fixed in place by bonding to avoid air leakage; when a collision occurs and pressure needs to be released, the adhesive between the first valve core 23 and the second valve core 24 can be broken by the ignition and combustion of the medicine in the medicine chamber 26. At the same time, the airflow pushes the first valve core 23 to move away from the medicine chamber 26, so that the second pressure relief port 27 on the first valve core 23 is connected to the first pressure relief port 21 on the second valve core 24. In order to improve the response speed, the first pressure relief port 21 and the second pressure relief port 27 correspond one-to-one. At this time, all the first pressure relief ports 21 are exposed in the second viewing port 29, and all the second pressure relief ports 27 are exposed in the first viewing port 28.

[0037] For example, the length of the first valve core 23 is less than the length of the housing 22, and under normal circumstances, there is a gap between the end of the first valve core 23 away from the medicine chamber 26 and the inner wall of the housing 22, so that the first valve core 23 can move away from the medicine chamber 26, so that the second pressure relief port 27 can be connected to the first pressure relief port 21; the length of the second valve core 24 can be adapted to the internal length of the housing 22.

[0038] See Figure 1 In its specific implementation, the door panel 3 is provided with a first armrest area 31 and a second armrest area 32. The first armrest area 31 is fixedly installed with the main body 11, and the second armrest area 32 is installed with a door armrest half 33. The main body 11 and the door armrest half 33 are fixedly connected to form a door armrest. Therefore, this utility model structure does not occupy additional space in the car, does not damage the original aesthetics, and only requires installing the armrest device of this embodiment at a part of the original door armrest to achieve the purpose of collision protection. It simplifies the processing flow and is more effective than methods such as seat side airbags and filling with energy-absorbing materials.

[0039] For example, the main body 11 can be fixed to the inner panel of the door by a snap fastener, adhesive or other supporting structure to prevent the main body 11 from detaching and to ensure structural stability. Correspondingly, the connection between the main body 11 and the door armrest half 33 can also be achieved by a snap fastener, adhesive or other supporting structure.

[0040] Example 2 This embodiment protects a car, including an automatic crushable door armrest device as described in Embodiment 1. The pressure control component 2 is signal-connected to the car airbag controller. The detected signal is transmitted to the car airbag controller through the car side collision sensor. After signal judgment, it is determined whether to send a command to the pressure control component 2 to control the pressure control component 2 to work, thereby realizing the depressurization of the collision protection component 1 to avoid injury to the occupants.

[0041] This embodiment is implemented as follows: 1. Normal standby mode (when the vehicle is driving or parked) The collision protection component 1 is filled with sufficient pressure to ensure that it always maintains stable hardness. At this time, the support component 12 is fully tensioned under air pressure, which restricts the expansion of the body 11, so that the contour and hardness of the body 11 are consistent with the traditional hard handrail, and the occupant can grip and lean normally. The system is in standby mode, and the vehicle side collision sensor monitors the force on the side of the vehicle in real time.

[0042] 2. Collision emergency situation (when the vehicle is involved in a side collision) Step 1: Collision Trigger: At the moment of a side collision (≤10ms), the side collision sensor inside the car door detects the abnormal signal and transmits the signal to the ACU (Airbag Controller Unit). Step 2: Signal judgment and command transmission: The ACU verifies the signal from the vehicle side collision sensor and, upon confirming that a collision has occurred, immediately sends an ignition command to the igniter 25. Step 3: Ignition and depressurization of the agent: After receiving the command, the igniter 25 instantly ignites the pyrotechnic agent inside the pyrotechnic chamber 26 (ignition time ≤ 2ms). The high temperature and high pressure gas generated by the combustion of the agent melts the hot melt adhesive sealing the first pressure relief port 21. At the same time, the combustion gas pushes the first valve core 23, so that the first pressure relief port 21 and the second pressure relief port 27 are connected. Step 4: Rapid depressurization: The high-pressure gas inside the body 11 is discharged through the first pressure relief port 21 and the second pressure relief port 27 in a very short time (≤50ms). The internal pressure of the body 11 drops rapidly to atmospheric pressure, the support member 12 loses tension, and the body 11 is in a soft and folded state. Step 5: Damage Avoidance: At this point, the car door is squeezed into the cabin by the collision. The originally hard armrest has become a soft, pressureless airbag. When it comes into contact with the occupant's ribs, it will not produce a rigid impact. Instead, it will absorb the collision energy through the deformation of the airbag, thus avoiding rib damage.

[0043] 3. Post-collision state After the collision, maintenance personnel can replace the igniter 25 in the pressure control component 2 and reseal the hot melt adhesive at the first pressure relief port 21; install the new collision protection component 1 to restore the device to its normal standby state, without the need to replace the entire handrail, thus reducing maintenance costs.

[0044] The structural design of this embodiment significantly improves the protection of the occupant's chest in a side collision. At the same time, it does not affect the daily user experience and has greater design flexibility. Its inflated hardness is consistent with that of traditional hard handrails, and there is no significant difference when occupants grip or lean against it. In this embodiment, an igniter is used to ignite the explosive chamber. The high temperature of the pyrotechnic agent quickly melts the hot melt adhesive on the first pressure relief port, pushing the first valve core and shortening the pressure relief time. This ensures that the pressure relief of the collision protection component is completed before the door is squeezed into the occupant, thus achieving timely protection.

[0045] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0046] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0047] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An automatic crushable car door handrail device, characterized in that, Includes collision protection components (1) and pressure control components (2); The collision protection component (1) and the pressure control component (2) are both fixed to the inner side of the door panel (3), and the pressure control component (2) is located between the collision protection component (1) and the door panel (3). The collision protection component (1) is depressurized and deformed by the pressure control component (2).

2. The automatic crushable door handrail device according to claim 1, characterized in that, The collision protection component (1) includes a body (11) and a support component (12); The body (11) is constructed as a cavity structure filled with the support member (12); An opening on the main body (11) corresponds to the first pressure relief port (21) provided on the pressure control component (2).

3. The automatic crushable door handrail device according to claim 2, characterized in that, The inner wall of the body (11) is coated with an airtight polyurethane coating.

4. The automatic crushable door handrail device according to claim 2, characterized in that, The support member (12) is a mesh structure made of wire tendons.

5. An automatic crushable door handrail device according to claim 2, characterized in that, The pressure control component (2) includes a housing (22), a first valve core (23), a second valve core (24), and an igniter (25); The shell (22) has a cavity structure; The first valve core (23) and the second valve core (24) are both located inside the housing (22), and one end of the first valve core (23) and the inner wall of the housing (22) enclose a medicine chamber (26), and there is a gap between the end of the first valve core (23) away from the medicine chamber (26) and the inner wall of the corresponding side of the housing (22); The igniter (25) is installed on the outer wall of the housing (22) and communicates with the medicine chamber (26). The high temperature gas generated in the medicine chamber (26) pushes the first valve core (23) to move away from the igniter (25) so as to control the second pressure relief port (27) provided on the first valve core (23) to communicate with the first pressure relief port (21). The first pressure relief port (21) is located on the second valve core (24).

6. The automatic crushable door handrail device according to claim 5, characterized in that, The shell (22) has a first viewing port (28) and a second viewing port (29) respectively on its two symmetrical walls; The first valve core (23) is partially exposed in the first viewing port (28), and the first pressure relief port (21) is exposed in the second viewing port (29).

7. The automatic crushable door handrail device according to claim 5, characterized in that, The first valve core (23) and the second valve core (24) are stacked inside the housing (22), and the first valve core (23) and the second valve core (24) are bonded together.

8. The automatic crushable door handrail device according to claim 2, characterized in that, The door panel (3) is provided with a first armrest area (31) and a second armrest area (32). The first armrest area (31) is fixedly installed with the main body (11), and the second armrest area (32) is installed with the door armrest half (33). The main body (11) and the door armrest half (33) are fixedly connected to form a door armrest.

9. An automatic crushable door handrail device according to claim 2, characterized in that, The first pressure relief port (21) is sealed with hot melt adhesive.

10. A car, characterized in that, The device includes an automatic crushable door handle as described in any one of claims 1-9, wherein the pressure control element (2) is signal-connected to the vehicle airbag controller.

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