JP2015127152A - Unlock device of vehicle door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve an unlock state of a door to a vehicle body more reliably after a predetermined time has elapsed from the time of a vehicle collision.SOLUTION: An unlock device of a vehicle door comprises: a lock device 15 for locking or unlocking a door 5, which closes a door opening 4 openably, to a vehicle body 2; and an operation device 25 for inputting a detection signal from a sensor 20 for detecting a collision situation of a vehicle 1, and operating the lock device 15 so as to perform the unlock operation. The operation device 25 comprises: a control device 26 for inputting the detection signal; an ignition device 34 which is ignited by the control based on the detection signal input by the control device 26; an expansion material 35 which expands by combustion; an operation body 37 for allowing the lock device 15 to perform the unlock operation by the pressure of the expanded expansion material 35; and a combustion material 38 for time delay provided between the ignition device 34 and the expansion material 35, for combusting the expansion material 35 after the lapse of a predetermined time during which the combustion progresses from the start of the combustion due to the ignition of the ignition device 34.

Description

  The present invention relates to an unlocking device for a vehicle door for causing a door capable of opening and closing a door opening of a vehicle body to be unlocked with respect to the vehicle body after a predetermined time has elapsed since the collision of the vehicle.

  Conventionally, there is an unlocking device for a vehicle door described in Patent Document 1 below. According to this publication, a door that closes a door opening formed in a vehicle body so as to be openable and closable, a lock device that can lock and unlock the door with respect to the vehicle body, and a sensor that detects a collision state of the vehicle. And an actuating device that operates to input a detection signal to unlock the locking device.

  The operating device receives the detection signal, outputs an operation signal after a predetermined time has elapsed from the input, a control device that inputs the operation signal from the emergency timer, and the control device described above. A motor that unlocks the lock device by control based on the operation signal is provided.

  When the vehicle collides, first, the sensor detects the collision situation and outputs a detection signal. Next, the emergency timer inputs the detection signal, and the emergency timer outputs an operation signal after a predetermined time has elapsed from the input. Then, the lock device is unlocked by driving the motor under the control of the control device to which the operation signal is input, so that the door can be opened.

  For this reason, at the time of the collision of the vehicle, the door is temporarily maintained in the state at the time of the collision. However, after the predetermined time has elapsed since the collision, the door is opened by opening the door and the inside of the vehicle body is passed through. The passenger can escape from the passenger compartment and can be rescued from outside the passenger compartment.

JP 7-269208 A

  By the way, according to the above-described prior art unlock device, at the time of a vehicle collision, the emergency timer that receives the detection signal of the sensor related to the collision is a timer until a predetermined time elapses after the detection signal is input. Then, the motor is driven by the control of the control device to unlock the lock device. That is, the unlocking device continues to communicate electronic and electrical signals from the time of a vehicle collision until the locking device is unlocked.

  However, after the collision immediately after the collision, the impact force tends to remain or the vehicle body is likely to be deformed by the impact force. Therefore, the emergency timer, the control device, or these The device related to the communication of the signal after the collision described above, such as the wire harness for connecting the cable, may be damaged due to the remaining impact force or the progress of the deformation of the vehicle body while the communication is continued.

  When the damage occurs, the motor cannot be driven by the control of the control device, and as a result, the door cannot be opened by the unlocking operation of the locking device.

  The present invention has been made paying attention to the above situation, and the object of the present invention is more reliably achieved by setting the door to an unlocked state with respect to the vehicle body after a lapse of a predetermined time from the collision of the vehicle. Is to be able to do it.

The invention of claim 1 includes a door 5 that closes a door opening 4 formed in the vehicle body 2 so as to be openable and closable, a lock device 15 that can lock and unlock the door 5 with respect to the vehicle body 2, and a collision situation of the vehicle 1. An unlocking device for a vehicle door, comprising: an actuating device 25 that operates to input a detection signal from the sensor 20 for detecting
The operating device 25 receives the detection signal, the control device 26, the ignition device 34 that ignites by control based on the detection signal input by the control device 26, the expansion material 35 that expands by combustion, and the expansion device An operating body 37 that unlocks the locking device 15 by the pressure of the expansion material 35, and the ignition device 34 and the expansion material 35 are interposed. Combustion is started by the ignition of the ignition device 34, and this combustion is performed. A vehicle door unlocking device comprising a time delay combustion material 38 for burning the expansion material 35 after elapse of a predetermined time.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

According to a first aspect of the present invention, there is provided a door for closing a door opening formed in the vehicle body so as to be openable and closable, a lock device for locking and unlocking the door to the vehicle body, and detection from a sensor for detecting a collision state of the vehicle. An unlocking device for a vehicle door, comprising: an actuating device that operates to unlock the locking device by inputting a signal;
The operating device receives the detection signal, the ignition device that ignites by control based on the detection signal input by the control device, the expansion material that expands by combustion, and the pressure of the expanded expansion material An operating body for unlocking the locking device, and the expansion material interposed between the ignition device and the expansion material, and after the elapse of a predetermined time when the combustion is started by the ignition of the ignition device and the combustion proceeds. The following effects are produced.

  In other words, the combustion material depends on the impact force remaining after the collision immediately after the vehicle collision and the progress of the deformation of the vehicle body due to this impact force, compared to the devices related to the communication of electronic and electrical signals such as the sensor and the control device. It is difficult to break, and once combustion is started, it is not easily extinguished by the impact force or deformation of the vehicle body.

  For this reason, immediately before or after the collision of the vehicle, the sensor detects the collision situation, and the ignition device is ignited by the control of the control device of the unlocking device to which the detection signal is input, and the combustion material Once the combustion is started, the combustion of the combustion material can be continued more reliably for a predetermined time even if the impact force remains or the vehicle body is deformed by the impact force. . Next, after the combustion of the combustion material continued for a predetermined time in this way, the expansion material is combusted and expanded, and the locking device is unlocked by the pressure due to the expansion.

  As described above, the communication of the electronic and electrical signals in the unlocking device from the time of the vehicle collision until the locking device is unlocked is completed in a very short time immediately before or after the vehicle collision. Therefore, it is possible to prevent the device related to the signal communication described above from being damaged by the impact force remaining after the collision or the progress of the deformation of the vehicle body. After that, as described above, the locking device is unlocked by the combustion of the combustion material that is not easily damaged by the impact force after the collision and the progress of the deformation of the vehicle body and does not extinguish easily. The door is guided to the unlocked state with respect to the vehicle body. As a result, the door can be unlocked with respect to the vehicle body after a predetermined time has elapsed from the time of the vehicle collision.

FIG. 3 is a partial enlarged partial sectional view of FIG. 2. 1 is an overall side view of a vehicle.

  The vehicle door unlocking device of the present invention, in order to realize the purpose of more reliably achieving the door unlocked with respect to the vehicle body after a predetermined time has elapsed since the vehicle collision, The form for carrying out the present invention is as follows.

  In other words, a vehicle door unlocking device detects a collision state of a vehicle, a door that closes a door opening formed in the vehicle body so as to be opened and closed, a lock device that can lock and unlock the door with respect to the vehicle body, and the like. An actuating device that inputs a detection signal from the sensor and operates to unlock the locking device. The operating device includes a control device that inputs the detection signal, an ignition device that ignites by control based on the detection signal input by the control device, an expansion material that expands due to combustion, and a pressure of the expanded expansion material. An operating body for unlocking the locking device, and the expansion material interposed between the ignition device and the expansion material, and after the elapse of a predetermined time when the combustion is started by the ignition of the ignition device and the combustion proceeds. And a time delay combustion material.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 is a vehicle exemplified by an automobile, and an arrow Fr indicates the front in the traveling direction of the vehicle 1.

  The interior of the vehicle body 2 of the vehicle 1 is a casing 3. A door opening 4 is formed on the side wall of the vehicle body 2 to allow communication between the inside and outside of the vehicle compartment 3, and a door 5 is provided that closes the door opening 4 so as to be openable and closable from the outside of the vehicle body 2. The front end of the door 5 is pivotally supported by the front opening edge of the door opening 4 by a pivotal support 6 so that the rear part of the door 5 moves toward the outside of the vehicle body 2 and rotates backward. The door opening 4 is opened and closed as the door 5 moves forward and backward.

  A locking tool 9 is provided for releasably locking the rear end of the door 5 to the rear opening edge of the door opening 4. The locking tool 9 has a striker 10 attached to the rear opening edge of the door opening 4 and a latch 12 pivotally supported by a pivot shaft 11 on the rear end of the door 5. When the door 5 rotates backward to close the door opening 4, and the door 5 closes the door opening 4, the latch 12 rotates about the pivot shaft 11 as shown in FIG. The door 5 is held in a state in which the door opening 4 is closed.

  A lock device 15 is provided for locking and unlocking the door 5 with respect to the vehicle body 2. The lock device 15 has a lock arm 17 which is pivoted to the rear end portion of the door 5 by a pivot shaft 16 so as to be able to rotate backwards A and B. The lock arm 17 is engaged with the latch 12 by the forward rotation A (FIG. 1). As a result, the latch 12 is held in a state of being locked to the striker 10, that is, the lock device 15 is held in a locked state, and the door 5 is locked with respect to the vehicle body 2. On the other hand, the lock arm 17 is released from the latch 12 by its backward rotation B. As a result, the locking device 15 is held in an unlocked state, and the door 5 is unlocked with respect to the vehicle body 2. The locking device 15 may be a manual type or an automatic door lock type that automatically operates according to the vehicle speed.

  A sensor 20 that detects various traveling states including the collision situation of the vehicle 1 and outputs a detection signal thereof is provided. The sensor 20 is provided at the front end of the vehicle body 2 and includes an objective radar 20a such as a millimeter wave radar that detects the presence of an object in front of the vehicle 2, a vehicle speed sensor 20b, and an acceleration sensor 20c.

  Although not shown in detail, the passenger compartment airbag device 21, the passenger seat airbag device 22, and the door window airbag device 23 of the door 5 are provided in the passenger compartment 3 inside the vehicle body 2.

  When the vehicle 1 collides, an unlocking device 24 is provided for unlocking the locking device 15 after a lapse of a predetermined time from the time of the crashing to bring the door 5 into an unlocked state.

  The unlock device 24 receives a detection signal from the sensor 20 and operates to inflate the airbags of the airbag devices 21 to 23 instantaneously and to unlock the lock device 15. A device 25 is provided.

  The operating device 25 is electrically connected to the sensor 20, and includes an electronic control device (CPU) 26 that inputs a detection signal from the sensor 20, and a battery 27 that supplies electric power to the control device 26. I have. By the control based on the detection signal input by the control device 26, the airbags of the airbag devices 21 to 23 are instantaneously inflated to protect the passengers in the passenger compartment 3.

  In addition, the operating device 25 is partitioned inside, and has a lower chamber 30, 31 and is supported by the front portion of the vehicle body 2, and is attached to the lower portion of the housing 32. An ignition device 34 that is electrically connected to the wire harness 33 and ignites by control based on the detection signal input by the control device 26; an expansion material 35 that is provided in the upper chamber 30 and expands by combustion; And an ignition material 36 provided adjacent to the expansion material 35 in the upper chamber 30.

  The ignition device 34 and the ignition material 36 use explosives as an igniter (ignition material). In addition, a propellant which is an explosive is used for the expansion material 35. The expansion material 35 is ignited by the ignition of the ignition material 36 and burns, thereby generating a large amount of gas and instantaneously expanding.

  Further, the actuating device 25 includes an actuating body 37 that unlocks the locking device 15 by the pressure of the expanded expansion material 35, and the ignition device 34 and the ignition material 36 that are accommodated in the lower chamber 31. A time delay combusting material 38 that is interposed between the combusting material 34 and the combusting material 34 is combusted after the start of combustion by the ignition of the combusting device 34 and the combustion material 36 is combusted after a lapse of a predetermined time. The cooling device 39 is provided at the outlet 30a of the upper chamber 30 and cools the gas passing through the outlet 30a by using coolant.

  The actuating body 37 is pivotally supported by the pivot shaft 42 at the rear end portion of the door 5 in the longitudinal direction, and the rotating end portion on one end side thereof engages with the lock arm 17 of the lock device 15. A pivot arm 43, a cylinder 45 formed to communicate with the outlet 30a of the upper chamber 30 of the housing 32, a piston 46 fitted into the cylinder 45 so as to be slidable in the axial direction, and the pivot arm 43, a wire 47 that connects the rotating end of the other end side to the piston 46, and an intermediate portion of the wire 47, which has large and small rotating wheels on the same axis, and the operation of the piston 46 And a speed increasing device 48 that transmits the speed to the rotating end of the rotating arm 43 on the other end side.

  The combustion material 38 is a flexible lead wire, and has a long core material such as black explosive and a flame retardant outer cylinder material having the core material. The combustion material 38 has a sufficient length so that the combustion continues for a predetermined time of 10 to 20 seconds from the start of the combustion. And stored in the lower chamber 31. In this case, it is prevented by the outer cylinder material that the unburned longitudinal portion of the combustion material 38 is ignited and burned by the spark of the combustion portion of the combustion material 38. The combustion material 38 may be a linear or bent rod-shaped solid material.

  When the vehicle 1 collides, first, the sensor 20 detects a collision situation and outputs a detection signal. Then, the airbag devices 21 to 23 that have input the detection signal through the control device 26 of the operating device 25 immediately inflate the airbags to protect the occupant.

  On the other hand, when the ignition device 34 inputs a detection signal from the sensor 20 via the control device 26 of the operating device 25 and the wire harness 33, the ignition device 34 immediately ignites, and this ignition causes one end portion of the combustion material 38. Combustion begins. Next, combustion proceeds from one end portion of the combustion material 38 toward the other end portion, and a predetermined time elapses until the combustion reaches the other end portion of the combustion material 38. In this case, the predetermined time is set to a value (for example, 10 to 20 seconds) that exceeds the general time required for the vehicle 1 to reach a stationary state immediately before or immediately after the collision of the vehicle 1. Is done.

  When the combustion of the combustion material 38 reaches the other end, the ignition material 36 is immediately ignited by this combustion, and the expansion material 35 is combusted by this ignition, and the expansion material 35 is instantaneously formed. Gas is expanded. And the gas of the expansion material 35 which expand | swells by this combustion is cooled by the said cooling device 39, Then, it introduce | transduces in the cylinder 45 through the said exit part 30a. Then, the piston 46 in the cylinder 45 is moved C in the direction away from the outlet 30a by the gas pressure of the expansion material 35.

  Then, the wire 47 pulled by the movement C of the piston 46 is accelerated by passing through the speed increasing device 48, and the rotating arm 43 is immediately rotated around the pivot shaft 42. Then, in conjunction with the rotation of the rotating arm 43, the lock arm 17 of the locking device 15 is rotated back B around the pivot shaft 16, that is, the locking device 15 is unlocked. Then, the rotation of the latch 12 around the pivot shaft 11 is allowed, the door 5 is unlocked with respect to the vehicle body 2, and the door 5 can be opened.

  Here, the combustion material 38 has an impact force remaining after the collision immediately after the collision of the vehicle 1 and the vehicle body 2 due to this impact force, compared to the devices related to the communication of electronic and electrical signals such as the sensor 20 and the control device 26. It is difficult to break depending on the progress of the deformation, and once the combustion is started, the fire is not easily extinguished depending on the impact force or the deformation of the vehicle body 2.

  For this reason, immediately before or after the collision of the vehicle 1, the sensor 20 detects the collision situation, and the ignition device 34 is ignited by the control of the control device 26 of the unlocking device 24 that has input the detection signal. Once the combustion of the combustion material 38 is started, the combustion of the combustion material 38 is continued even if the impact force remains or the vehicle body 2 is deformed by the impact force. The predetermined time can be continued more reliably. Next, after the combustion of the combustion material 38 continued for a predetermined time in this way, the expansion material 35 is combusted and expanded, and the lock device 15 is unlocked by the pressure due to the expansion.

  As described above, the communication of the electronic and electrical signals in the unlocking device 24 from the time of the collision of the vehicle 1 to the time when the locking device 15 is unlocked is extremely short immediately before or after the collision of the vehicle 1. Since it can be completed in time (e.g., 0.01 to 0.2 seconds), it is said that the device related to the communication of the signal is damaged by the impact force remaining after the collision or the progress of the deformation of the vehicle body 2. This is prevented. After that, as described above, the lock device 15 is unlocked by the combustion of the combustion material 38 which is not easily damaged by the impact force after the collision and the progress of the deformation of the vehicle body 2 and is not easily extinguished. Actuated, the door 5 is guided to the unlocked state with respect to the vehicle body 2. As a result, the door 5 can be unlocked with respect to the vehicle body 2 after a predetermined time has elapsed since the collision of the vehicle 1.

  In the above case, the object radar 20a is mainly used as the sensor 20, so that the occurrence of a collision is predicted at an early stage of the collision including immediately before the collision of the vehicle 1, and the detection signal is transmitted to the control device 26 of the operating device 25. When the vehicle 1 is input, electronic and electrical signal communication in the unlocking device 24 from the time of the collision of the vehicle 1 to the time of the unlocking operation of the locking device 15 is performed immediately before or after the collision of the vehicle 1. Can be completed. Therefore, it is more reliably prevented that the device relating to the communication of the electronic and electrical signals described above is damaged by the impact force remaining after the collision or the progress of the deformation of the vehicle body 2. As a result, the door 5 can be unlocked with respect to the vehicle body 2 after a predetermined time has elapsed since the collision of the vehicle 1.

  The unlocking device 24 shares the sensor 20 for actuating the airbag devices 21 to 23 and the control device 26 of the actuating device 25, and accordingly, the unlocking device 24 of the unlocking device 24 correspondingly. The configuration can be simplified and the production can be made inexpensive.

  In addition, according to the said Example, although the objective radar 20a, the vehicle speed sensor 20b, and the acceleration sensor 20c are used in order to operate the airbag apparatuses 21-23, the detection signal is immediately after the collision of the vehicle 1. Even if only the acceleration sensor 20c that outputs is used, it is possible to achieve the operational effects that are not significantly different from the case of using the objective radar 20a and the vehicle speed sensor 20b. And if the said unlocking device 24 shares only the above-mentioned acceleration sensor 20c for operating the said airbag apparatuses 21-23 among the said sensors 20, the structure of the said unlocking device 24 will be more. It can be simplified and its production can be made cheaper.

  Further, the unlocking device 24 is provided on each of the left and right side portions of the vehicle body 2, and the operation device 25 of the unlocking device 24 on the other side portion is operated when the vehicle 1 collides with one side portion of the vehicle body 2. You may do it.

  Moreover, the said expansion | swelling material 35 is good also as a foamed resin which foams by the heating by heating of the said ignition material 36, and combustion, and expands | swells. In this case, the expansion rate of the expansion material 35 is considerably slower than the gas expansion rate due to the combustion of the expansion material 35, which is a propellant explosive. However, the predetermined time required for the combustion of the combustion material 38 is short. Sufficient, that is, the length of the combustion material 38 can be shortened. In this case, the cooling device 39 may not be provided.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Car interior 4 Door opening 5 Door 15 Locking device 16 Pivoting shaft 17 Lock arm 20 Sensor 21 Airbag device 22 Airbag device 23 Airbag device 24 Unlocking device 25 Actuating device 26 Control device 34 Ignition device 35 Expansion material 36 Ignition material 37 Actuator 38 Combustion material A Forward rotation B Reverse rotation C Movement

Claims (1)

A door that closes the door opening formed in the vehicle body so that it can be opened and closed, a locking device that locks and unlocks the door with respect to the vehicle body, and a lock signal that is input by a detection signal from a sensor that detects the collision state of the vehicle. An unlocking device for a vehicle door comprising an actuating device that operates to unlock the device,
The operating device receives the detection signal, the ignition device that ignites by control based on the detection signal input by the control device, the expansion material that expands by combustion, and the pressure of the expanded expansion material An operating body for unlocking the locking device, and the expansion material interposed between the ignition device and the expansion material, and after the elapse of a predetermined time when the combustion is started by the ignition of the ignition device and the combustion proceeds. A vehicle door unlocking device, comprising: a time delay combustion material for burning the fuel.

Images