JP2006312821A - Door unlocking device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door unlocking device for a vehicle realizing a smart entry system capable of forming a remote control key into an arbitrary shape. <P>SOLUTION: This door unlocking device for the vehicle loaded on the vehicle to release door lock is provided with an electric power supply means for supplying electric power to a portable machine (the remote control key) in the outside of the vehicle, a checking means for checking an ID code included in a signal transmitted from the portable machine receiving supply of electric power by the electric power supply means with a predetermined ID code, a door unlocking means for releasing the door lock when confirming agreement of both ID codes by the checking means, and a power generation means for generating electric power by manual operation to supply the generated electric power to the electric power supply means, the checking means, and the door unlocking means. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention generally relates to a vehicle door unlocking device that is mounted on a vehicle and releases a door lock, and more particularly to a vehicle door unlocking device that realizes a smart entry system in which a remote control key can have any shape. Relates to the device.

  Conventionally, an immobilizer system is known as a vehicle security system (see, for example, Patent Documents 1 and 2). In the immobilizer system, the electronic ID code is collated by bidirectional communication between the key and the vehicle, and the engine is allowed to start only when the ID code matches. This immobilizer system has been required to be installed as a standard specification in Europe since 1997, and the number of vehicles equipped in Japan is increasing.

Conventionally, the electronic ID code is collated by two-way communication between the remote control key and the vehicle, and if the ID code matches, the vehicle user simply takes the remote control key and removes it from a clothing pocket or the like. There is also known a smart start system in which the engine can be started / stopped only by pressing a push type ignition switch (see, for example, Patent Document 3).
JP-A-9-105255 JP-A-10-287210 JP 2004-314806 A

  A key used in an immobilizer system normally has a built-in secondary battery (battery) in a grip portion, and transmits electric waves representing the ID code to the vehicle side using electric power stored therein.

  When the built-in battery is empty, the ID code is not transmitted from the key to the vehicle, and engine start is not permitted because the ID cannot be verified. For example, in the immobilizer system disclosed in Patent Documents 1 and 2, While the is inserted into the key cylinder, electric power is supplied from the vehicle side, and the key battery is charged.

  Further, in the smart start system disclosed in Patent Document 3, a coil for charging a battery with built-in key using mutual electromagnetic induction is provided around a push type ignition switch, and a vehicle user places a key in the vicinity of the ignition switch. The internal battery can be charged in a non-contact manner simply by “holding”.

  However, all of these conventional methods are based on the assumption that the remaining amount of the vehicle battery is sufficient, and naturally, when the vehicle battery is empty, the key built-in battery cannot be charged.

  The conventional smart start system as disclosed in Patent Document 3 is usually accompanied by a smart entry system. In smart entry and start systems known by names such as the Smart Key System (registered trademark), a vehicle-side transmitter for ID code verification is also provided outside the passenger compartment (for example, near the door outside handle). If the ID code matches the ID code held on the vehicle side, the vehicle user simply wears the remote control key and touches the door outside handle without taking it out of the pocket of clothing. Is now unlocked.

  However, as represented by the system disclosed in Patent Document 3, the conventional smart entry and start system has a structure in which the key built-in battery can be charged only in the passenger compartment, so that the user can connect to the vehicle. If the battery with built-in key is empty when trying to get in, the smart entry function cannot be used.

  Therefore, in the conventional smart entry and start system, the remote control key is equipped with a mechanical key as an emergency for unlocking the door when the battery inside the remote control key becomes empty outside the passenger compartment. In addition, it is essential that the door of the vehicle is provided with a key cylinder for unlocking the door corresponding to the mechanical key.

  In the system disclosed in Patent Document 3, when a power supply coil such as that provided around the ignition switch is provided outside the vehicle door, the vehicle exterior design (design) and air resistance (hereinafter referred to as Cd value). May be adversely affected. If a coil is provided inside the door to avoid this, since the vehicle door is usually an iron plate, the electromagnetic wave for electromagnetic induction is blocked and does not function.

  Thus, in the conventional smart entry system, the remote control key's built-in battery is exhausted outside the passenger compartment, so the mechanical key mechanism for unlocking the door is the key even though the frequency of use is low. This is indispensable for both the vehicle side and the vehicle side, and there is a problem that even when the vehicle battery is empty, charging cannot be performed even in the passenger compartment.

  The present invention is for solving such problems. In the smart entry system, not only when the built-in battery of the remote control key is empty outside the vehicle compartment, but also when the vehicle battery is empty, The main purpose is to provide a vehicle door unlock device that realizes a smart entry system in which the door unlock structure using mechanical keys is not required by using the entry function and the remote control key can have any shape. Objective.

  In order to achieve the above object, a first aspect of the present invention is a vehicle door unlocking device that is mounted on a vehicle and releases a door lock, and is used for powering a portable device (remote control key) outside the passenger compartment. Power supply means for supplying power, collation means for collating an ID code included in a signal transmitted from the portable device supplied with power by the power supply means with a predetermined ID code, and both the ID codes by the collation means The door unlocking device for a vehicle has door unlocking means for releasing the door lock when the match is confirmed.

  In this first aspect, the power supply means is contactless using a mutual electromagnetic induction in a portable device located in the vicinity of the power supply means from the viewpoint of convenience and design of the appearance of the vehicle. It is preferably designed and set to supply power.

  In the first aspect, it is preferable that the power supply means is provided in a non-metallic housing so that radio waves for power supply are not blocked. More specifically, the inside of the side mirror whose casing portion other than the mirror is made of resin is most preferable because it is close to the door.

  According to the first aspect, even when the built-in battery of the portable device (remote control key) is exhausted outside the passenger compartment, power is supplied from the vehicle side to operate the portable device, and smart by ID verification Since entry is possible, it is not necessary to provide a mechanical key mechanism for unlocking the door on the portable device side and the vehicle side.

  In this first aspect, the power supply means has an on / off switch from the viewpoint of saving the remaining amount of the vehicle battery, and is designed to supply power only when the switch is on. It is preferably set.

  A second aspect of the present invention for achieving the above object is the vehicle door unlocking device according to the first aspect, wherein power is generated by manual operation, and the generated power is supplied to the power supply means. The vehicle door further includes power generation means for supplying the verification means and the door unlocking means, wherein the power supply means supplies at least part of the power supplied from the power generation means to the portable device. It is an unlocking device.

  In this second aspect, the power generation means is exposed to the outside of the vehicle and can be manually reciprocated or rotated, and the reciprocating or rotating movement of the operating means is converted into electrical energy. Conversion means. The operating means is preferably embedded in the vehicle when not in use and has a structure that is pulled out during use.

  In the second aspect, it is preferable that the power generation means is provided on the side mirror from the viewpoint that convenience is higher near the power supply means and the vehicle door. In this case, it is preferable that the operation means is provided so as to be exposed downward on the bottom surface portion of the side mirror so that the appearance is not noticeable.

  According to this second aspect, the vehicle user can manually generate power on the vehicle side so that the power supply means can charge the built-in battery of the portable device even when the vehicle battery is empty. Even if the built-in battery of the portable device (remote control key) becomes empty, power can be supplied from the vehicle side to operate the portable device, enabling smart entry by ID verification. Therefore, it is not necessary to provide a mechanical key mechanism for unlocking the door on the portable device side and the vehicle side.

  In this second aspect, the vehicle door unlocking device determines whether or not manual power generation using the power generation means is necessary, and whether or not sufficient power necessary for smart entry is generated, In order to notify the user, it is preferable to further have a notification means for notifying the operator of the power generation means when the power supply means, the collating means, and the door unlocking means are operable.

  Here, the notification means may be, for example, a device that blows (outputs) a sound such as a buzzer sound when these means are operable, or is inoperable when these means are operable. It may be a light emitting diode (LED) device that expresses time with a difference in emission color.

  In the first and second aspects, the vehicle door unlocking device is further provided with a door outside handle, and further includes contact detection means for detecting a human contact with the door outside handle, When the door unlocking means confirms the coincidence of the two ID codes by the collating means, and the contact detecting means detects a human contact with the door outside handle, the door outside handle It may be designed and set to release the door lock of the mounted vehicle door. In this case, the notification means notifies the operator of the power generation means when the power supply means, the collation means, the door unlocking means, and the contact detection means are operable.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle door unlocking apparatus which implement | achieves the smart entry system which can make a remote control key (electronic key) into arbitrary shapes can be provided. As a result, the remote control key can be expanded to improve convenience, such as using a card type to improve portability and to integrate with other mobile devices such as mobile phones.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings. The vehicle door unlocking device according to the present invention is assumed to be mounted on a vehicle equipped with an existing smart entry system and to cooperate with the system. The basic concept of the existing smart entry system, the main hardware configuration, the operating principle, the basic control method, and the like are known to those skilled in the art, and thus detailed description thereof is omitted.

  A vehicle door unlocking device according to an embodiment of the present invention will be described with reference to FIGS. The vehicle door unlocking apparatus according to the present embodiment is an apparatus additionally provided for an existing smart entry system.

  FIG. 1 is a schematic configuration diagram of a vehicle door unlocking apparatus 100 according to the present embodiment. In the figure, thick arrows indicate the flow of power (supply), and thin arrows indicate the flow of signals.

  The vehicle door unlock device 100 includes an ID code verification unit 101 that determines whether or not an electronic key (remote control key) A carried by a vehicle user is a regular key.

  The ID code verification unit 101 has a function of transmitting a predetermined request signal radio wave to a predetermined detection area. When the electronic key A exists in this detection area and a request signal is received, the electronic key A is configured to transmit an ID code stored therein in advance. The ID code collation unit 101 further receives the ID code transmitted from the electronic key A, collates it with a predetermined ID code held in advance, and determines that the electronic key A is a regular key if they match. Also equipped.

  The vehicle door unlocking device 100 further includes a control unit 102 that is an ECU (Electronic Control Unit), for example, and a door unlocking unit 103 that performs a door unlocking operation. The control unit 102 receives the collation result from the ID code collating unit 101, and issues a command to the door unlocking unit 103 to release the door lock when a regular key exists in the detection area.

  The vehicle door unlocking device 100 further includes a charging coil unit 104 for charging a secondary battery (not shown) such as a battery or a capacitor built in the electronic key A by mutual electromagnetic induction, and a charging unit. And a switch unit 105 that switches on / off the power supply by electromagnetic induction from the coil unit 104.

  The vehicle door unlock device 100 further includes an ID code verification unit 101, a control unit 102, a door unlock unit 103, and a power storage unit 106 that supplies driving power to the charging coil unit 104. The power storage unit 106 is a secondary battery such as a battery or a capacitor, and receives power supply (+ B) from a vehicle battery (not shown).

  The vehicle door unlocking device 100 further stores enough power in the power storage unit 106 to operate all of the ID code verification unit 101, the control unit 102, the door unlocking unit 103, and the charging coil unit 104. It has LED display part 107 which displays what is done by lighting or blinking of LED. The LED display unit 107 may be, for example, A) provided with one light emitting diode and may be lit or blinked when power is sufficient, or B) provided with light emitting diodes of two different emission colors, Different colors may be lit or blinked when sufficient and insufficient.

  The vehicle door unlocking device 100 further includes a manual charging device 108 that can be manually operated by a person, generate electric power by a predetermined manual operation, and charge the power storage unit 106 with the generated electric power. The power generation principle and structure employed by the manual charging device 108 may be any known to those skilled in the art. The manual charging device 108 includes at least an operation unit (described later) operated by a person and a conversion unit (not shown) that converts a reciprocating motion or a rotational motion of the operation unit into electrical energy.

  In the vehicle door unlock apparatus 100 according to the present embodiment having such a configuration, at least the function of transmitting and receiving radio waves in the ID code verification unit 101, the coil body of the charging coil unit 104, and the manual charging device 108. Of these, the part operated by a person is arranged inside a side mirror (door mirror, outer rear view mirror) on the driver's seat side of the vehicle.

  From the viewpoint of reducing changes from the existing system, it is preferable that the control unit 102 and the door unlocking unit 103 are shared with the existing smart entry system and all other components are housed in the side mirror.

  FIG. 2 is a perspective view from below of the driver side mirror of the vehicle on which the vehicle door unlocking device 100 according to this embodiment is mounted. FIG. 2 shows a case of a right-hand drive vehicle as an example.

  As shown in FIG. 2, in the present embodiment, the bidirectional communication unit 101 </ b> A of the ID code verification unit 101 and the coil main body 104 </ b> A of the charging coil unit 104 are provided near the bottom surface inside the driver side mirror 200. . By being provided inside the side mirror 200, these parts do not adversely affect the vehicle design (design) and Cd value. Further, since the casing portion other than the mirror of the side mirror 200 is usually made of resin, the electromagnetic force from the coil body 104A embedded in the side mirror 200 is not blocked.

  When the switch unit 105 (FIG. 1) is turned on, the coil main body 104A starts to output an electromagnetic wave for supplying power. The installation location of the switch unit 105 may be arbitrary and is not necessarily provided on the side mirror. However, in consideration of user operability, the electronic key A is connected to the side where the bidirectional communication unit 101A and the coil body 104A are arranged. It is preferable that the mirror is disposed at a position where it can be easily viewed and operated when it is held over the bottom surface of the mirror.

  As shown in FIG. 2, in the present embodiment, the operation unit 108 </ b> A of the manual charging device 108 is provided exposed on the bottom surface inside the driver's seat side mirror 200. By being provided on the bottom surface, the influence on the vehicle design (design) can be minimized.

  In this embodiment, when the vehicle user recognizes from the display of the LED display unit 107 (FIG. 1) that the vehicle battery is empty and the power storage unit 104 (FIG. 1) needs to be charged, the side mirror 200 The operation unit 108A is pulled out from the bottom surface, and the operation unit 108A is reciprocated up and down until the LED display unit 107 notifies the completion of charging. The installation place of the LED display unit 107 may be arbitrary and is not necessarily provided on the side mirror. However, considering the visibility of the user, the LED display unit 107 is disposed at a position where the user can easily view the operation unit 108A. It is preferable.

  FIG. 3 shows the movement of the operation unit 108A of the manual charging device 108 of the vehicle door unlocking apparatus 100 according to the present embodiment. In this embodiment, the operation unit 108A is accommodated in a state where it is embedded in the bottom surface of the side mirror 200 when not in use, as shown in FIG. 3A, in order to minimize the influence on the Cd value of the vehicle. The In use, as shown in FIG. 3B, it is picked downward by hand and reciprocated in the vertical direction. This reciprocating motion is converted into electric energy by a converter (not shown), thereby realizing manual power generation.

  Here, a retainer mechanism (not shown) for returning the operation portion 108A pulled out as shown in FIG. 3B to the accommodated state as shown in FIG. Is provided in advance, the operability of the vertical movement operation of the operation unit 108A by the vehicle user is improved.

  Next, using FIG. 4 to FIG. 6, the operation when the user gets into the vehicle equipped with the vehicle door unlocking apparatus according to the present embodiment using the smart entry system will be described according to the situation.

  FIG. 4 shows a state in which both the battery of the vehicle and the battery of the electronic key A have a remaining amount when the user gets into the vehicle equipped with the vehicle door unlocking device according to the present embodiment. In this case, the existing smart entry system is used as it is, and when the user carrying the electronic key A enters the predetermined range from the vehicle, ID code verification is automatically performed by bidirectional wireless communication as described above. If they match, if the user touches the door outside handle, the door is unlocked and the user can get into the vehicle interior.

  That is, in the case of FIG. 4, the vehicle door unlocking device according to the present embodiment is not used, and the user does not need to take out the electronic key A.

  FIG. 5 shows a state in which when the user gets into the vehicle equipped with the vehicle door unlocking device according to the present embodiment, the battery of the vehicle is present but the battery of the electronic key A is not present. Yes. In this case, since the ID code cannot be verified even when the user carries the electronic key A and approaches the vehicle, the door is not unlocked even if the door outside handle is touched.

  Therefore, in this case, the vehicle user needs to charge the electronic key A first. Specifically, the switch of the switch unit 105 is turned on, the charging coil unit 104 is activated, and the electronic key A is charged without contact by mutual electromagnetic induction by holding the electronic key A over the bottom surface of the side mirror. . As soon as charging of the electronic key A is completed with the hand held over the bottom surface of the side mirror, ID code verification is performed between the bidirectional communication unit 101A provided on the side mirror and the electronic key A. The door lock is released.

  That is, in the case of FIG. 5, since the electronic key A can be charged outside the passenger compartment, even if the user has left the passenger compartment and the remaining battery level of the electronic key A is empty, the smart entry can be easily performed. Can enter the passenger compartment.

  FIG. 6 shows a state where neither the battery of the vehicle nor the battery of the electronic key A has a remaining amount when the user gets into the vehicle equipped with the vehicle door unlocking device according to the present embodiment. In this case, since there is no battery of the vehicle, even if the switch unit 105 is turned on, non-contact charging cannot be performed on the bottom surface of the side mirror. It can be confirmed from the LED display unit 107 that the vehicle side needs to be charged.

  Therefore, in this case, the vehicle user first pulls the operation unit 108A of the manual charging device 108 from the bottom of the side mirror and moves it up and down to manually generate power necessary for ID code verification and door unlocking. Whether or not necessary and sufficient power generation has been performed can be confirmed from the display on the LED display unit 107.

  After the completion of charging, the electronic key A is charged this time, the ID code verification is executed, and the door lock is released as in the case of FIG.

  That is, in the case of FIG. 6, the vehicle-side power necessary for smart entry can be generated by a user outside the vehicle compartment by means of the manual power generation device. Therefore, even when the vehicle battery is empty, the vehicle user can Can enter.

  As described above, according to the present embodiment, when entering the vehicle equipped with the vehicle door unlocking device according to the present embodiment, the remaining battery level of the vehicle and the remaining battery level of the electronic key (remote control key). Regardless of this, the smart entry system can be used to release the door lock by ID code verification and get into the passenger compartment. Therefore, the electronic key does not need to be provided with a mechanical key for emergency, and it is not necessary to provide a key cylinder for door unlocking on the door of the vehicle.

  If it is not necessary to provide the mechanical key mechanism in this way, the electronic key can have any arbitrary shape. For example, it may be a thin card that fits in a wallet or business card holder, or may be built in or integrated in a portable device such as a cellular phone.

  In the above embodiment, when the door lock is released using the vehicle door unlocking device according to the above embodiment, the electronic key is held over the bottom surface of the side mirror, and the operation is started immediately after successful ID code verification. The seat door is unlocked, but this is only an example, and the present invention is not limited to this.

  For example, as a modified example, as in the case of the existing smart entry system, even when the ID code verification is performed near the bottom of the side mirror by the vehicle door unlocking device according to the present invention, The door lock may be released only after the outside handle is touched.

  FIG. 7 shows a schematic configuration of a vehicle door unlocking device 700 according to such a modification. In the present modification, the vehicle door unlocking device 700 further includes a touch sensor unit 701 that senses human contact with the driver's door outside handle in addition to the configuration of the above-described embodiment. Such a touch sensor unit 701 is known to those skilled in the art from an existing smart entry system.

  In this modification, when the ID code match is confirmed, the ID code matching unit 101 checks the touch sensor unit 701 for the presence or absence of touch detection, and only when the contact is confirmed, the control unit 102 confirms the check OK. Send the result.

  In the present modification, driving power for the touch sensor unit 701 is supplied from the power storage unit 106. The LED display unit 107 has enough power to cause the power storage unit 106 to operate all of the ID code verification unit 101, the control unit 102, the door unlocking unit 103, the charging coil unit 104, and the touch sensor unit 701. Is displayed by turning on or blinking the LED.

  In the above-described embodiment and its modification, as an example, the LED display unit 107 transmits the charging status of the power storage unit 106 to the user by LED display. However, the present invention is not limited to this, and Any configuration can be used as long as the charging status of the unit 106 can be notified to the vehicle user. For example, a device that sounds (outputs) a buzzer sound or the like when sufficient power is charged in the power storage unit 106 by charging using the manual charging device 108 may be provided instead.

  The present invention can be used for a vehicle equipped with a smart entry system. The appearance, weight, size, running performance, etc. of the vehicle to be mounted are not limited.

1 is a schematic configuration diagram of a vehicle door unlocking apparatus according to an embodiment of the present invention. It is a perspective view from the lower part of the driver's seat side mirror of the vehicle by which the door unlocking device for vehicles concerning one example of the present invention is carried. It is a figure which shows a motion of the operation part of the manual charging device of the door unlocking device for vehicles which concerns on one Example of this invention. It is a figure which shows a mode when both the battery of a vehicle and the battery of an electronic key have remaining amount when boarding the vehicle by which the vehicle door unlocking apparatus which concerns on one Example of this invention is mounted. It is a figure which shows a mode when there exists the battery remaining amount of a vehicle, but there is no battery remaining amount of an electronic key, when boarding the vehicle by which the vehicle door unlocking apparatus which concerns on one Example of this invention is mounted. It is a figure which shows a mode when neither the battery of a vehicle nor the battery of an electronic key has a residual amount when boarding the vehicle by which the vehicle door unlocking apparatus which concerns on one Example of this invention is mounted. It is a schematic block diagram of the vehicle door unlocking apparatus which concerns on another one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Vehicle door unlock apparatus 101 ID code collation part 101A Two-way communication part 102 Control part 103 Door unlock part 104 Charging coil part 104A Coil main body 105 Switch part 106 Power storage part 107 LED display part 108 Manual charging apparatus 108A Operation part 200 Driver side mirror

Claims (13)

A vehicle door unlocking device that is mounted on a vehicle and releases a door lock,
Power supply means for supplying power to the portable device outside the passenger compartment;
Collating means for collating an ID code included in a signal transmitted from a portable device supplied with power by the power supplying means with a predetermined ID code;
A door unlocking device for a vehicle, comprising: a door unlocking unit that releases the door lock when the collating unit confirms the coincidence of the two ID codes. The vehicle door unlocking device according to claim 1,
The vehicle door unlocking device according to claim 1, wherein the power supply means supplies power to a portable device located in the vicinity of the power supply means in a non-contact manner using mutual electromagnetic induction. The vehicle door unlocking device according to claim 1 or 2,
The vehicle door unlocking device according to claim 1, wherein the power supply means is provided in a non-metallic housing. The vehicle door unlocking device according to claim 3,
The vehicle door unlocking device according to claim 1, wherein the power supply means is provided in a side mirror. The vehicle door unlocking device according to any one of claims 1 to 4,
The power supply means
Has an on / off switch,
A vehicle door unlocking device that supplies power only when the switch is on. The vehicle door unlocking device according to any one of claims 1 to 5,
Further comprising power generation means for generating electric power by manual operation and supplying the generated electric power to the power supply means, the collating means, and the door unlocking means;
The vehicle door unlocking device, wherein the power supply means supplies at least a part of the power supplied from the power generation means to the portable device. The vehicle door unlocking device according to claim 6,
The power generation means includes
Operating means that are exposed to the outside of the vehicle and can be manually reciprocated or rotated;
A vehicular door unlocking device comprising: conversion means for converting reciprocating motion or rotational motion of the operating means into electrical energy. The vehicle door unlocking device according to claim 7,
The vehicle door unlocking device, wherein the power generation means is provided on a side mirror. The vehicle door unlocking device according to claim 8,
The vehicle door unlocking device according to claim 1, wherein the operating means is provided to be exposed downward on a bottom portion of the side mirror. The vehicle door unlocking device according to any one of claims 6 to 9,
The vehicle door unlocking apparatus further comprising a notifying unit for notifying an operator of the power generation unit when the power supply unit, the collating unit, and the door unlocking unit are operable. . The vehicle door unlocking device according to any one of claims 1 to 5,
A contact detection means provided on the door outside handle for detecting a person's contact with the door outside handle;
The door unlocking means is configured such that when the matching means confirms the coincidence of the two ID codes and the contact detecting means detects a human contact with the door outside handle, the door outside handle A vehicle door unlocking device for releasing a door lock of a mounted vehicle door. The vehicle door unlocking device according to any one of claims 6 to 9,
A contact detection means provided on the door outside handle for detecting a person's contact with the door outside handle;
The power generation means supplies at least a part of the generated power to the contact detection means,
The door unlocking means is configured such that when the matching means confirms the coincidence of the two ID codes and the contact detecting means detects a human contact with the door outside handle, the door outside handle A vehicle door unlocking device for releasing a door lock of a mounted vehicle door. The vehicle door unlocking device according to claim 12,
The vehicle further comprising: a notification means for notifying an operator of the power generation means when the power supply means, the collation means, the door unlocking means, and the contact detection means are operable. Door unlocking device.

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