EP0462339A1 - Device for giving alarm for failure to draw out key for vehicle - Google Patents
Device for giving alarm for failure to draw out key for vehicle Download PDFInfo
- Publication number
- EP0462339A1 EP0462339A1 EP90306797A EP90306797A EP0462339A1 EP 0462339 A1 EP0462339 A1 EP 0462339A1 EP 90306797 A EP90306797 A EP 90306797A EP 90306797 A EP90306797 A EP 90306797A EP 0462339 A1 EP0462339 A1 EP 0462339A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- key
- switch
- vehicle
- tubular member
- alarm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B45/00—Alarm locks
- E05B45/06—Electric alarm locks
- E05B45/0605—Electric alarm locks for preventing of leaving the key
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B45/00—Alarm locks
- E05B45/06—Electric alarm locks
- E05B45/08—Electric alarm locks with contact making inside the lock or in the striking plate
- E05B45/10—Electric alarm locks with contact making inside the lock or in the striking plate by introducing the key or another object
Definitions
- This invention relates to a device for giving an alarm for failure to draw or pull out an engine key for a vehicle.
- This embodiment is essentially constructed to form a series circuit by a door switch which is turned ON when the door is opened, a key switch which is turned ON when the engine key is inserted into the key cylinder, and an alarm unit, thus to supply a power to the series circuit by a drive power supply of a door-lock actuator which is activated in response to a door lock-operation.
- the key cylinder lock may be also subjected to picking.
- this invention contemplates providing a device for giving an alarm for failure to draw out a key for a vehicle which can completely prevent a driver from being away from a vehicle with the driver forgetting to draw out a key, wherein it is very difficult to reproduce a duplicate key of a key used in this device and it is also very difficult to conduct picking of a key cylinder lock when this device is employed, whereby it can be expected to prevent a vehicle from being stolen.
- This invention further contemplates providing a device for giving an alarm for failure to draw out a key for a vehicle which can be easily installed and put into practice, and which has excellent durability.
- a device for giving an alarm for failure to draw out a key for a vehicle characterized by the provision of a switch member provided in a key cylinder lock and turned ON when a magnet key as an engine key is inserted into the key cylinder lock by a power from a power supply provided in the vehicle, a door switch turned ON when the door is opened, and an alarm unit operative to produce an alarm when the door of the vehicle is opened under the state where the magnet key is inserted into the key cylinder lock as it is on the basis of the operating states of the switch member and the door switch.
- FIGS. 1 to 14 show embodiments of this invention: More particularly, FIG. 1 is a model view showing an arrangement of an alarm device according to one embodiment of this invention, FIG. 2 is a block diagram showing an electrical connection of the alarm device of FIG. 1, FIGS. 3 to 6 are schematic explanatory views showing essential parts of this invention, respectively, FIGS. 7 and 8 are explanatory views showing switch members of this invention, respectively, and FIGS. 9 to 14 are explanatory views showing a different embodiment of this invention.
- FIG. 1 is a schematic view showing, in a model form, an embodiment of this invention.
- reference numeral 1 denotes a key cylinder lock constituting a part of an ignition coil or a key switch for a switch provided at a handle column of an automotive vehicle.
- This key cylinder lock 1 is constituted, e.g., as shown in FIGS. 3 to 6.
- reference numeral 2 denotes an outer tubular member having a predetermined length.
- An outer hole 3 and an inner hole 4 communicating with each other and intersecting with each other are provided in the outer tubular member 2 from a suitable portion of the outer circumferential portion toward the radial direction.
- two penetration holes each comprised of outer hole 3 and inner hole 4 are formed at a required interval.
- Reference numeral 5 denotes an inner tubular member rotatably received over a predetermined angular range within the outer tubular member 2.
- Grooves 6 of a suitable size are formed at portions corresponding to the above-mentioned penetration holes of the outer circumferential portion of the inner tubular member 5, respectively.
- a key hole 8 corresponding to a key body 7a of a magnetic key 7 as an engine key shown in FIG. 3 is opened.
- Reference numeral 9 denotes movable obstruction elements each accommodated within both the inner hole 4 of the outer tubular member 2 and the groove 6 of the inner tubular member 5.
- a plurality of magnet pin tumblers 9a and 9b are used.
- Each movable obstruction element is biased toward the groove 6 by a spring member 10 having a relatively weak spring force fitted into the inner hole 4 of the outer tubular member in a locked state or before the magnet key 7 is inserted.
- This magnetic key 7 is comprised of a key body 7a inserted into the key hole and a holding portion 7b integrally formed with the key body 7a.
- a plurality of magnets g1 and g2 are embedded at the upper side portion of the key body 7a with a predetermined spacing therebetween. The polarities of these plural magnets g1 and g2 may be arbitrarily combined.
- Reference numeral 11 denotes a switch member which is provided in the key cylinder lock 1 of the key switch for an ignition switch, and which is opened and closed in dependency upon the insertion into the key hole 8 of the magnet key 7 and the detachment therefrom.
- a magnetic responsive switch which detects that the movable obstruction element 9 jumps up against the spring force of the spring member 10 from the groove 6 of the inner tubular member by insertion of the magnet key 7 and becomes close to the switch, whereby the magnetic responsive switch is brought into a closed state.
- the magnetic responsive switch 11 there may be used, e.g., a switch member 11A comprising a fixed contact piece 11a as a fixed contact and a movable contact piece 11b as a movable contact as shown in FIG. 7 or a magnetic responsive lead switch 11B as shown in FIG. 8.
- switch members 11 using a magnetic responsive switch are suitably assembled into a plurality of outer holes 3 of the outer tubular member 2 as shown in FIGS. 3 to 6, respectively. Respective switch members 11 and 11 are connected in series and are protected by a cover member (not shown).
- reference numeral 12 denotes a door switch which is turned ON when the door of a vehicle is opened.
- An electrical load 13 is connected to this door switch 12.
- Reference numeral 14 denotes an alarm unit such as a buzzer connected between the switch members 11 of the key cylinder lock 1 and the door switch 12. In this embodiment, this alarm unit 14 is energized using a battery 15 mounted in a vehicle as a power supply when both the switch member 11 and the door switch 12 are turned ON to produce an alarm. Additionally, reference numeral 16 denotes a room lamp connected to the battery 15 through the door switch 12 and a room lamp switch 17.
- the structure of a key cylinder lock 1A mainly differs from that of the above-described embodiment of this invention.
- this key cylinder lock 1A essentially comprises an outer tubular member 2a, an inner tubular member 5a rotatably provided within the outer tubular member 2a, and driver pins 26 adapted to thrust movable pins 25 provided in the outer tubular member 2a and provided in the inner tubular member 5a by spring members 10a in a radial direction of the key hole 8a for a magnet key 7A at all times.
- driver pins 26 adapted to thrust movable pins 25 provided in the outer tubular member 2a and provided in the inner tubular member 5a by spring members 10a in a radial direction of the key hole 8a for a magnet key 7A at all times.
- At suitable portions of thin thickness of the outer tubular member 2a there are formed a plurality of penetration holes 27 adapted so that a plurality of magnetic responsive switches 11c each serving as a switch member can be fitted.
- the door switch when the door is opened, the door switch is turned ON.
- the alarm unit produces an alarm, thereby making it possible to prevent failure to draw out a key.
- the modified embodiment shown in FIGS. 13 and 14 mainly differs from the above-described embodiment in that a timer TM is newly provided.
- a controller 30 including a timer TM for allowing the alarm unit to be operative for a fixed time.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
- This invention relates to a device for giving an alarm for failure to draw or pull out an engine key for a vehicle.
- Conventionally, as the device of this kind, there is an embodiment disclosed in, e.g., Japanese Patent Application Laid Open No. 159159/88.
- This embodiment is essentially constructed to form a series circuit by a door switch which is turned ON when the door is opened, a key switch which is turned ON when the engine key is inserted into the key cylinder, and an alarm unit, thus to supply a power to the series circuit by a drive power supply of a door-lock actuator which is activated in response to a door lock-operation.
- However, the above-mentioned embodiment has the problems recited below.
- (1) By a relatively simple construction utilizing an existing circuit, an alarm for failure to draw out an engine key for a vehicle can be given. However, even if a procedure is taken to simply open the door with the engine key being inserted into the key cylinder, the alarm unit does not produce an alarm. To provide an alarm, the door lock-operation must be necessarily conducted.
Accordingly, when a driver has closed the door without carrying out the door-lock operation, there are instances where there may occur failure to draw out an engine key. - (2) The engine key is of an ordinary type in which the key body includes a plurality of engagement portions.
- Accordingly, reproduction is easy.
- Further, the key cylinder lock may be also subjected to picking.
- Therefore, an intention of preventing a failure to draw out an engine key as well as an intention of indirectly preventing burglary of a vehicle cannot be sufficiently attained.
- With the drawbacks with the prior art in view, this invention contemplates providing a device for giving an alarm for failure to draw out a key for a vehicle which can completely prevent a driver from being away from a vehicle with the driver forgetting to draw out a key, wherein it is very difficult to reproduce a duplicate key of a key used in this device and it is also very difficult to conduct picking of a key cylinder lock when this device is employed, whereby it can be expected to prevent a vehicle from being stolen. This invention further contemplates providing a device for giving an alarm for failure to draw out a key for a vehicle which can be easily installed and put into practice, and which has excellent durability.
- To achieve the above-mentioned object, a device for giving an alarm for failure to draw out a key for a vehicle, characterized by the provision of a switch member provided in a key cylinder lock and turned ON when a magnet key as an engine key is inserted into the key cylinder lock by a power from a power supply provided in the vehicle, a door switch turned ON when the door is opened, and an alarm unit operative to produce an alarm when the door of the vehicle is opened under the state where the magnet key is inserted into the key cylinder lock as it is on the basis of the operating states of the switch member and the door switch.
- In the accompanying drawings:
FIGS. 1 to 14 show embodiments of this invention:
More particularly, FIG. 1 is a model view showing an arrangement of an alarm device according to one embodiment of this invention, FIG. 2 is a block diagram showing an electrical connection of the alarm device of FIG. 1, FIGS. 3 to 6 are schematic explanatory views showing essential parts of this invention, respectively, FIGS. 7 and 8 are explanatory views showing switch members of this invention, respectively, and FIGS. 9 to 14 are explanatory views showing a different embodiment of this invention. - Preferred embodiments of this invention will be described in detail with reference to the attached drawings.
- FIG. 1 is a schematic view showing, in a model form, an embodiment of this invention.
- In this figure,
reference numeral 1 denotes a key cylinder lock constituting a part of an ignition coil or a key switch for a switch provided at a handle column of an automotive vehicle. Thiskey cylinder lock 1 is constituted, e.g., as shown in FIGS. 3 to 6. Namely,reference numeral 2 denotes an outer tubular member having a predetermined length. Anouter hole 3 and aninner hole 4 communicating with each other and intersecting with each other are provided in the outertubular member 2 from a suitable portion of the outer circumferential portion toward the radial direction. In this embodiment, two penetration holes each comprised ofouter hole 3 andinner hole 4 are formed at a required interval. -
Reference numeral 5 denotes an inner tubular member rotatably received over a predetermined angular range within the outertubular member 2.Grooves 6 of a suitable size are formed at portions corresponding to the above-mentioned penetration holes of the outer circumferential portion of the innertubular member 5, respectively. At the central portion of the innertubular member 5, akey hole 8 corresponding to akey body 7a of amagnetic key 7 as an engine key shown in FIG. 3 is opened. -
Reference numeral 9 denotes movable obstruction elements each accommodated within both theinner hole 4 of the outertubular member 2 and thegroove 6 of the innertubular member 5. In this embodiment, a plurality ofmagnet pin tumblers groove 6 by aspring member 10 having a relatively weak spring force fitted into theinner hole 4 of the outer tubular member in a locked state or before themagnet key 7 is inserted. Thismagnetic key 7 is comprised of akey body 7a inserted into the key hole and aholding portion 7b integrally formed with thekey body 7a. As shown in FIG. 5, a plurality of magnets g1 and g2 are embedded at the upper side portion of thekey body 7a with a predetermined spacing therebetween. The polarities of these plural magnets g1 and g2 may be arbitrarily combined. -
Reference numeral 11 denotes a switch member which is provided in thekey cylinder lock 1 of the key switch for an ignition switch, and which is opened and closed in dependency upon the insertion into thekey hole 8 of themagnet key 7 and the detachment therefrom. In this embodiment, as shown in FIG. 5, for this purpose, there is provided a magnetic responsive switch which detects that themovable obstruction element 9 jumps up against the spring force of thespring member 10 from thegroove 6 of the inner tubular member by insertion of themagnet key 7 and becomes close to the switch, whereby the magnetic responsive switch is brought into a closed state. As the magneticresponsive switch 11, there may be used, e.g., aswitch member 11A comprising afixed contact piece 11a as a fixed contact and amovable contact piece 11b as a movable contact as shown in FIG. 7 or a magneticresponsive lead switch 11B as shown in FIG. 8. - In this embodiment, switch
members 11 using a magnetic responsive switch are suitably assembled into a plurality ofouter holes 3 of the outertubular member 2 as shown in FIGS. 3 to 6, respectively.Respective switch members - Turning to FIGS. 1 and 2,
reference numeral 12 denotes a door switch which is turned ON when the door of a vehicle is opened. Anelectrical load 13 is connected to thisdoor switch 12. -
Reference numeral 14 denotes an alarm unit such as a buzzer connected between theswitch members 11 of thekey cylinder lock 1 and thedoor switch 12. In this embodiment, thisalarm unit 14 is energized using abattery 15 mounted in a vehicle as a power supply when both theswitch member 11 and thedoor switch 12 are turned ON to produce an alarm. Additionally,reference numeral 16 denotes a room lamp connected to thebattery 15 through thedoor switch 12 and aroom lamp switch 17. - In the above construction, as shown in FIGS. 3 and 4, before the
magnet key 7 is inserted into thekey cylinder lock 1, a plurality ofmagnetic pin tumblers spring members 10, so they are positioned within thegrooves 6 and a plurality of magneticresponsive switches 11 each serving as a switch member are in a closed state, respectively. - On the other hand, as shown in FIGS. 5 and 6, when the
magnet key 7 is inserted into thekey hole 8 of thekey cylinder lock 1, magnetic forces of the magnets g1 and g2 embedded in themagnet key 7 are exerted on correspondingmagnetic pin tumblers magnetic pin tumblers spring members 10 from thegrooves 6, and become close to the magnetic responsive switches, respectively. Responding to this, respective magneticresponsive switches 11 are brought into a closed state. - It is now assumed that a driver has opened the door under the state where he forgets to draw out the
magnet key 1 from thekey cylinder lock 1. This allows thedoor switch 12 to be turned ON. As a result, a current from thebattery 15 mounted in the vehicle flows in thealarm unit 14, thedoor switch 12 and theelectrical load 13 via a plurality ofswitch members alarm unit 14 produces an alarm as long as bothswitches - A different embodiment of this invention will now be described. The same or similar reference numerals are attached to the same parts as those of the above-described embodiment of this invention, respectively, and their repetitive explanation will be omitted.
- In the embodiment shown in FIGS. 9 to 14, the structure of a
key cylinder lock 1A mainly differs from that of the above-described embodiment of this invention. - Namely, this
key cylinder lock 1A essentially comprises an outertubular member 2a, an innertubular member 5a rotatably provided within the outertubular member 2a, anddriver pins 26 adapted to thrustmovable pins 25 provided in the outertubular member 2a and provided in the innertubular member 5a byspring members 10a in a radial direction of thekey hole 8a for amagnet key 7A at all times. At suitable portions of thin thickness of the outertubular member 2a, there are formed a plurality ofpenetration holes 27 adapted so that a plurality of magnetic responsive switches 11c each serving as a switch member can be fitted. - Also in the above-mentioned construction, when the
magnet key 7A is inserted into thekey hole 8a of thekey cylinder lock 1A, respective magnetic responsive switches 11c and 11c are in an ON state. - Accordingly, when the door is opened, the door switch is turned ON. As a result, in the same manner as in the above-described embodiment, the alarm unit produces an alarm, thereby making it possible to prevent failure to draw out a key.
- The modified embodiment shown in FIGS. 13 and 14 mainly differs from the above-described embodiment in that a timer TM is newly provided.
- Namely, between a plurality of
switch members alarm unit 14, there is provided acontroller 30 including a timer TM for allowing the alarm unit to be operative for a fixed time. - In the above-mentioned construction, when the
switch members door switch 12 are turned ON, a current from thebattery 15 mounted in the vehicle flows in thealarm unit 14, thedoor switch 12, and theelectrical load 13. At this time, that current is to flow in thealarm unit 14 only for an output time of the timer TM. Thus, an alarm is produced only this time period. - As is clear from the foregoing description, this invention can provide the advantages recited below.
- (1) Since the magnet key adapted to be inserted into the key cylinder lock for vehicle and the switch member provided in the key cylinder lock, which is turned ON in response to insertion of the magnet key, there is no possibility that the magnet key is damaged and there is little possibility that the mechanical key cylinder lock is out of order. Accordingly, there is little possibility that the alarm unit fails to produce an alarm by damage of the magnet key or trouble of the key cylinder lock.
- (2) Since a power supply signal delivered from the power supply through the switch member of the key cylinder lock can be used as information, an alarm unit, etc. is connected to an existing circuit for a door switch which is turned ON when the door is opened, thereby making it possible to easily put this alarm device into practice.
- (3) Since it is extremely difficult to reproduce a duplicate key of the magnet key on the market, and it is also very difficult to conduct picking of the key cylinder lock 1 (1A), burglarproof effect of a vehicle can be also expected.
Claims (2)
- A device for giving an alarm for failure to draw out a key for a vehicle, comprising;
a key cylinder lock for the vehicle including an outer tubular member, and an inner tubular member rotatably provided within said outer tubular member,
a switch member provided in said outer tubular member which is turned ON when a magnet key is inserted into said inner tubular member, by a power delivered from a power supply provided in said vehicle,
a door switch which is turned ON when a door of said vehicle is opened, and
an alarm unit connected to both said door switch and said switch member. - A device for giving an alarm for failure to draw out a key for a vehicle, wherein there are provided a plurality of switch members.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU57180/90A AU641400B2 (en) | 1990-06-21 | 1990-06-18 | Device for giving alarm for failure to draw out key for vehicle |
DE1990624792 DE69024792T2 (en) | 1990-06-21 | 1990-06-21 | Device for giving an alarm when forgetting the key withdrawal in a vehicle |
EP19900306797 EP0462339B1 (en) | 1990-06-21 | 1990-06-21 | Device for giving alarm for failure to draw out key for vehicle |
NL9002267A NL9002267A (en) | 1990-06-21 | 1990-10-18 | PROTECTION DEVICE FOR GIVING ALARMS, WHEN FORGETTING TO REMOVE THE CONTACT KEY FROM THE CONTACT OF A VEHICLE. |
US07/730,400 US5113174A (en) | 1990-06-21 | 1991-07-16 | Device for giving alarm for failure to draw out key for vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19900306797 EP0462339B1 (en) | 1990-06-21 | 1990-06-21 | Device for giving alarm for failure to draw out key for vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0462339A1 true EP0462339A1 (en) | 1991-12-27 |
EP0462339B1 EP0462339B1 (en) | 1996-01-10 |
Family
ID=8205464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900306797 Expired - Lifetime EP0462339B1 (en) | 1990-06-21 | 1990-06-21 | Device for giving alarm for failure to draw out key for vehicle |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0462339B1 (en) |
AU (1) | AU641400B2 (en) |
DE (1) | DE69024792T2 (en) |
NL (1) | NL9002267A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2329417A (en) * | 1997-09-18 | 1999-03-24 | John Anthony Savage | Automatically activated,audible warning system for lock keys |
WO2003093612A1 (en) * | 2002-05-02 | 2003-11-13 | Gert Beilstein | Locking cylinder |
CN111877871A (en) * | 2020-08-07 | 2020-11-03 | 陈丹丹 | Magnetic interference type anti-theft early warning lock |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111577013B (en) * | 2020-05-21 | 2021-06-04 | 重庆科技学院 | Key forgets to pull out and door does not close reminding device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2019806A1 (en) * | 1968-10-03 | 1970-07-10 | Voss Kg J | |
DE2740910A1 (en) * | 1977-09-10 | 1979-03-22 | Geiger Fa Georg | Motor vehicle key with noise generator - reminds driver of key position and is silenced in working position |
US4803467A (en) * | 1988-02-23 | 1989-02-07 | George Peters | Magnetic key lock provided with an alarm system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63159159A (en) * | 1986-12-23 | 1988-07-02 | Nissan Motor Co Ltd | Alarm for key carelessly left in key hole |
-
1990
- 1990-06-18 AU AU57180/90A patent/AU641400B2/en not_active Ceased
- 1990-06-21 EP EP19900306797 patent/EP0462339B1/en not_active Expired - Lifetime
- 1990-06-21 DE DE1990624792 patent/DE69024792T2/en not_active Expired - Fee Related
- 1990-10-18 NL NL9002267A patent/NL9002267A/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2019806A1 (en) * | 1968-10-03 | 1970-07-10 | Voss Kg J | |
DE2740910A1 (en) * | 1977-09-10 | 1979-03-22 | Geiger Fa Georg | Motor vehicle key with noise generator - reminds driver of key position and is silenced in working position |
US4803467A (en) * | 1988-02-23 | 1989-02-07 | George Peters | Magnetic key lock provided with an alarm system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2329417A (en) * | 1997-09-18 | 1999-03-24 | John Anthony Savage | Automatically activated,audible warning system for lock keys |
WO2003093612A1 (en) * | 2002-05-02 | 2003-11-13 | Gert Beilstein | Locking cylinder |
CN111877871A (en) * | 2020-08-07 | 2020-11-03 | 陈丹丹 | Magnetic interference type anti-theft early warning lock |
Also Published As
Publication number | Publication date |
---|---|
NL9002267A (en) | 1992-05-18 |
DE69024792T2 (en) | 1997-02-06 |
EP0462339B1 (en) | 1996-01-10 |
AU5718090A (en) | 1991-12-19 |
DE69024792D1 (en) | 1996-02-22 |
AU641400B2 (en) | 1993-09-23 |
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