JPH09221946A - Device for confirming locking and unlocking - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably keep the inverted position of an indication magnet when a key is pulled out from a key hole in a locking and unlocking confirmation device having the indication magnet driven with a drive magnet loaded to the end face of a cylinder lock in a knob of the key. SOLUTION: As a permanent magnet used for a rotational body, an indication magnet 9 magnetized orthogonally to the center shaft is held in a part approached to the end face of a cylinder lock in a knob of non-magnetic material in a turnable manner. In one side, a trigger 24 is guided to the inside of the knob of the key in the vertical direction in a movable manner and, at the same time, the trigger 24 urged to the front of the direction approached to the cylinder lock is provided. On the other side, driving pins 21, 22 and a brake spring 33 are inserted between the indication magnet 9 and trigger 24, and the driving pin 22 is oppressed to the indication magnet 9 with a cam section of the trigger in a state draw the key from the key hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock / unlock confirmation device which can display the latest lock / unlock state of a lock on a key and can check the lock / unlock state of a dwelling unit or an automobile by looking at the key even when going away.

[0002]

2. Description of the Related Art Various lock / unlock confirmation devices having the above-mentioned functions have been proposed at present. For example, a lock / unlock confirmation device proposed in Japanese Patent Application No. 2-145163 (Japanese Patent Application Laid-Open No. 4-38382) is disclosed. The device is an excellent idea in that it does not require the use of a battery to indicate the locked / unlocked state.

In this locking / unlocking confirmation device, a small cylindrical display magnet magnetized in a radial direction is rotatably mounted in a knob of a key, while a moving trajectory of the display magnet on an end face of a cylinder lock is provided. Drive magnets having different magnetization directions from each other, and when the drive magnet and the display magnet come close to each other, the display magnet is reversed by utilizing the magnetic attraction force and the magnetic repulsion generated between the drive magnet and the display magnet.

[0004]

The locking / unlocking device described above maintains the inverted angle position even after the display magnet inverted by the drive magnet is removed from the cylinder lock. A magnetic plate is provided.

Further, since the attraction plate is provided between the display magnet and the drive magnet, the magnetic flux from the drive magnet is cut off by the attraction plate, and no magnetic force can be exerted on the display magnet. When completed, the lock / unlock device according to the present invention does not operate.

On the other hand, an unlocking / unlocking confirmation device which similarly uses the inversion of a display magnet is disclosed in Japanese Patent Application No. Hei 5-219146 (Japanese Patent Application Laid-Open No. 7-5452) in order to solve the above-mentioned disadvantages.
According to the method proposed in 4), a trigger that moves when the key is inserted into the keyhole is provided near the display magnet, and this trigger is urged in a direction in which the inner end presses the display magnet, so that the key of the key is pressed. When inserted into the hole, the inner end of the trigger is separated from the display magnet to make the display magnet free, but when the key is removed from the keyhole, the inner end of the trigger exerts elasticity on the display magnet to mechanically apply a brake.

The locking / unlocking confirmation device having the above-mentioned structure exerts the intended function and is currently in practical use. However, if the key trigger with the key removed from the key hole is moved, the display magnet becomes free. However, there is still room for improvement in that the display angle position may change.

An object of the present invention is to provide a locking / unlocking confirmation device in which the trigger does not release the constraint of the display magnet even if the trigger is moved a little.

[0009]

In order to achieve the above-mentioned object, the invention described in claim 1 is mounted at a predetermined angular position on the outer end surface of the outer cylinder of the cylinder lock, and is attached in the axial direction of the inner cylinder. A drive magnet consisting of a magnetized permanent magnet, a key having a knob made of a non-magnetic material, and in the key knob,
A magnet holding chamber formed in a position close to the front end surface facing the cylinder lock and at a position substantially aligned with the drive magnet in the radial direction of the cylinder lock when the key is inserted into the key hole, and in a direction perpendicular to the central axis. A permanent magnet that forms a magnetized rotating body, in which one outer peripheral surface and the other outer peripheral surface are painted in different colors with respect to a plane that includes the central axis and is parallel to the magnetizing direction. Display magnet that is rotatably housed in the magnet holding chamber in a state where the magnet is substantially perpendicular to the stem, and a viewing window that opens on at least one side surface of the knob so that the magnet holding chamber can be viewed. A drive pin storage chamber that is connected to the holding chamber and extends in a direction substantially perpendicular to the key stem, a drive pin that is movably guided in the drive pin storage chamber, and a drive pin and a display magnet. It The brake spring and the drive pin storage chamber are guided movably in the front-rear direction in the key knob on the side opposite to the magnet holding chamber, and are biased in the forward projecting direction. In the normal state where the drive pin is pulled out from the hole and one end projects from the front end face of the knob, the drive pin is pushed outward in the radial direction of the cylinder lock,
And a trigger having a cam portion for elastically pressing the display magnet via a brake spring.

According to the second aspect of the present invention, the drive magnet is mounted on the outer end surface of the outer cylinder of the cylinder lock at a predetermined angular position and is composed of a permanent magnet magnetized in the axial direction of the inner cylinder. A key having a knob made of a magnetic material, and a front end that is formed in the key knob at a position substantially aligned with the drive magnet in the radial direction of the cylinder lock when the key is inserted into the key hole and that faces the cylinder lock. A magnet holding chamber extending in the length direction of the key close to the surface, and a rod-shaped permanent magnet magnetized in the length direction, with one end side and the other end side with respect to the center in the length direction, respectively. A display magnet, which is painted in different colors and is housed in the magnet holding chamber in a state substantially parallel to the stem of the key, and a viewing window that opens on at least one side of the knob so that you can look into the magnet holding chamber. ,magnet A drive pin storage chamber that is connected to the holding chamber and extends in a direction substantially perpendicular to the key stem, a drive pin that is movably guided in the drive pin storage chamber, and a drive pin and a display magnet. The brake spring and the drive pin housing chamber are guided movably in the front-rear direction in the key knob on the side opposite to the magnet holding chamber, and are biased in the forward projecting direction, and the key locks in the cylinder lock. In a normal state in which the drive pin is pulled out from the key hole and one end protrudes from the front end face of the knob, the drive pin is pushed outward in the radial direction of the cylinder lock, and a cam portion for elastically pressing the display magnet via the brake spring is formed. And a trigger.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. The cylinder lock to which the present invention is applied is inserted into the keyhole with the stem of the key kept horizontal, turned 90 degrees clockwise or counterclockwise to lock, and rotated 90 degrees counterclockwise or clockwise. When unlocking and unlocking the key, insert the key stem into the keyhole, turn it 90 degrees counterclockwise or clockwise to unlock, return to the insertion angle position, and remove the key. In addition, a so-called reversible key that can be unlocked even when inserted into the keyhole with the key stem turned upside down can be used.

In FIG. 1, reference numeral 1 denotes an outer cylinder, and reference numeral 2 denotes an inner cylinder. A cylinder lock having the outer cylinder 1 and the inner cylinder 2 has a key stem engraved with a horizontal key stem. Insert it in the hole 3 and turn it 90 degrees clockwise to lock it,
It is assumed that the operation is performed such that the key is pulled out by turning back 90 degrees counterclockwise.

An annular rubber magnet 4 is provided on the outer end surface of the outer cylinder 1.
Is attached, and the pair of first drive magnets 5 are magnetized so that the angular positions at 12 o'clock and 6 o'clock of the rubber magnet 4 are converted partially and the surface becomes the N pole. 5 are provided.

Also, the rubber magnet 4 is magnetized so that the angular positions corresponding to 1 o'clock and 7 o'clock in terms of the watch face are partially and the surface becomes the S pole. Two drive magnets 6, 6 are formed.

The relative angular position of the second drive magnet 6 with respect to the first drive magnet 5, that is, the angular interval, does not necessarily have to be the same in the set of upper and lower drive magnets in FIG.

Further, since the drive magnet is constructed, it is not always necessary to partially magnetize the rubber magnet. For example, a concave portion is formed or bored at a predetermined position on the end surface of the outer cylinder of the cylinder lock. The drive magnets 5 and 6 made of permanent magnets may be embedded in the recesses.

In some cases, the drive magnet 5,
6 is sunk deeply, and a cover plate made of the same material as the outer cylinder 1 is placed.

On the other hand, as shown in FIGS. 2 and 3, in the key knob 7, it is close to the front end face facing the cylinder lock, and when the key is inserted into the keyhole 3, in the radial direction of the cylinder lock. A magnet holding chamber 8 is formed at a position substantially aligned with the drive magnet 5 (6), and a cylindrical display magnet 9 is rotatably housed in the magnet holding chamber 8.

The display magnet 9 is a permanent magnet forming a rotating body (a cylinder in the illustrated embodiment) magnetized in a direction perpendicular to the central axis, and includes a central axis and is a plane parallel to the magnetizing direction. With respect to the above, one outer peripheral surface and the other outer peripheral surface are separately painted in different colors, for example, green and red (not shown).

As shown in FIG. 2, the knob 7 is composed of, for example, a knob base 11 and a knob lid 12 made of synthetic resin, both of which are bonded by means of bonding, heat welding or screwing.
The knob 13 of the commercially available key K is sandwiched (see FIG. 10) and is integrally connected.

Therefore, the knob lid 12 of the knob base 11 is
As shown in FIGS. 3 and 4, a shallow first recessed portion 14 on which the knob portion 13 of the key K can fit exactly is formed on the joint surface with
A second recess 15 deeper than the first recess for accommodating and guiding a trigger, which will be described later, and a third recess 17 formed by connecting the magnet holding chamber 8 and the drive pin accommodating chamber 16 are formed.

The second and third recesses 15 and 17 have substantially the same depth, and one end of the drive pin storage chamber 16 is open to the second recess 15.

Further, in FIG. 3, reference numeral 18 designates a peep window, and the peep window 18 is formed by cutting the bottom surface of the magnet holding chamber 8 in FIG. 4 and inserting a transparent synthetic resin plate therein.

Further, in the illustrated embodiment, when the lock / unlock confirmation device according to the present invention is assembled by sandwiching the knob portion 13 of the key K between the knob base 11 and the knob lid 12, the display magnet 9 and the key knob portion. 13 partially overlaps with each other (see FIG. 10) and the guide of the display magnet 9 is not perfect.

Therefore, as shown in FIG. 5, the knob lid 12 that is combined with the knob base 11 having the above-mentioned structure is fitted exactly to the knob portion 13 of the key K, as shown in FIG. The fourth recessed portion 19 having a shape is provided as a recess, and the support block 20 whose surface constitutes a part of the inner wall of the magnet holding chamber 8 is formed in a portion substantially aligned with the display magnet 9 when combined with the knob body 11. It is projected.

Therefore, as shown in FIG. 2, since the display magnet 9 is sandwiched between the support block 20 and the magnet holding chamber 8, it does not escape from the magnet holding chamber 8.

On the other hand, in the drive pin storage chamber 16, as shown in FIGS. 6 and 7, first and second drive pins 21,
22 is movably guided and housed in the longitudinal direction of the drive pin housing chamber 16, that is, in the vertical direction in the figure.

The first and second drive pins 21,
A brake spring 23 is arranged between the two.

In the illustrated embodiment, as shown in FIG. 7, the first and second drive pins 21 and 22 are each formed in a cup shape, and the openings thereof are arranged at a relative position where they face each other.
A brake spring 23 as a coil spring is sandwiched between them.

Therefore, these first and second drive pins 2
Specifications such as the dimensions and spring constants of the brake springs 1 and 22 and the brake spring 23 make the spring constant of the brake spring 23 relatively large, and when the trigger 24 described later is pushed into the knob 7 (see FIG. 6). And a state shown in FIG. 7), for example, a slight gap g between the display magnet 9 and the inner wall of the magnet holding chamber 8.
(Refer to FIG. 7) occurs, and the rotation of the display magnet 9 is not hindered.

Alternatively, the specifications are set so that the second drive pin 22 is lightly elastically contacted with the display magnet 9 so that the rotation of the display magnet 9 is not hindered.

In the illustrated embodiment, the second drive pin 22 is inserted between the brake spring 23 and the display magnet 9, but the second drive pin 22 is not always essential in terms of operating principle.

On the other hand, the second concave portion 15 of the knob base 11
As shown in FIGS. 6 and 8, an elongated prismatic trigger 24 is movably fitted in the longitudinal direction of the key stem (left and right in FIGS. 6 and 8). doing.

The trigger 24 has its front end pinched by the elasticity of the trigger spring 25 as a compression coil spring.
Is urged outward from the front end face of the.

Then, as shown in FIG. 9, on the upper surface of the trigger 24, the cam portion 2 is formed by cutting the front end portion of the step portion obliquely.
6 are formed.

As shown in FIG. 10, the knob portion 13 of the key K is placed on the knob base 11 having the above-described structure, and the knob lid 12 is further coupled thereto to form the knob 7. (See FIG. 2).

In the knob 7 constructed as described above,
In the normal state where the key K is not inserted into the key hole of the cylinder lock, as shown in FIG. 8, the trigger 24 is moved forward by the elastic force of the trigger spring 25, and the cam portion 26 thereof is moved.
However, by the wedge action, the first drive pin 21 is pushed toward the display magnet 9 and pushed up to the upper surface of the trigger 24 which is one step higher.

Therefore, the distance between the first and second drive pins 21 and 22 is narrowed, and the brake spring 23 is compressed. As a result, the second drive pin 22 elastically repels the display magnet 9 to the ceiling of the magnet holding chamber 8. The display magnet 9 is stably sandwiched between the second drive pin and the ceiling of the magnet holding chamber 8.

As is clear from FIG. 8, this clamping is kept stable even if the trigger 24 moves a little.

On the other hand, when the key K is inserted into the key hole 3 of the cylinder lock, as shown in FIGS. 6 and 7, the trigger 24 is pushed by the inner cylinder end surface of the cylinder lock, and the trigger 24 is pulled into the knob 7.
The cam portion 25 moves inward of the knob, and the first drive pin 2
As a result of 1 being lowered and the distance from the second drive pin 22 being enlarged, the elastic force of the brake spring 23 is reduced and the display magnet 9 can be rotated.

Therefore, for example, when the display magnet 9 is inserted into the keyhole 3 at the angular position of A in FIG. 1 and is rotated 90 degrees clockwise to lock, the display magnet 9 is the first drive magnet 5 in the lower part of FIG. Driven to the state shown in FIG.

At this time, it is assumed that the side surface of the display magnet 9 which can be viewed through the viewing window 18 (see FIG. 3) is green.

After locking, the key K is turned 90 degrees counterclockwise to return the key K to the original insertion angle position and then removed from the key hole 3.

In this returning process, the display magnet does not meet the drive magnet 5 (6), so that the display magnet 9 does not rotate and is in green display.

When the key is removed from the keyhole, the elasticity of the trigger spring 25 causes the trigger 24 to protrude from the knob 7,
As described above, and as shown in FIG. 8, the cam portion 26 of the trigger pushes up the first drive pin 21 in the direction of the display magnet 9 and brakes the display magnet 9, so that the lock display by the display magnet is stable. Held in.

On the other hand, the indicator magnet 9 is inserted into the key hole of the locked cylinder lock at the angular position shown in FIG.
When is rotated 90 degrees counterclockwise and returned again by 90 degrees, the display magnet 9 approaches the drive magnet in the order of S → N → S and is finally driven by the second drive magnet of the S pole. Invert as shown at 11.

At this time, for example, a red display of the displayed magnet appears from the peep window of the knob to indicate that the cylinder lock is unlocked.

Also at this time, the brake is applied to the display magnet 9 when the key is removed, as described above.

In the case of a reversible key, it may be possible to insert the key with the display magnet 9 at the angular position B in FIG. 1 when unlocking.

Also in this case, as is clear from FIG.
Since the display magnet 9 approaches the drive magnet in the order of S → N → S, the display of the arrow-tight display magnet 9 is reversed.

This is also the case when the display magnet 9 is inserted and locked and unlocked at the angular position of B in FIG. 1, and the locking / unlocking confirmation device according to the present invention is also applicable to a reversible key.

Further, since the display magnet 9 retains the state in which it is driven by the drive magnet last encountered, the first drive magnet 5 is accurately arranged at the angular position of 12 o'clock or 6 o'clock on the clock face. It is not necessary to do so, and it may be arranged in the vicinity thereof. The same applies to the second drive magnet 6.

The cylinder lock in the illustrated embodiment is
Lock the key by reciprocating it 90 degrees in a certain direction,
It is designed to be compatible with a so-called reversible key that operates even when the key stem is turned upside down, while reciprocating the lock by reciprocating 0 degrees. However, the present invention can also be applied to other operation type cylinder locks. is there.

For example, a key that is not a reversible key is used, the key is turned 180 degrees clockwise or counterclockwise from the insertion angle position to lock, and the key is unlocked at the locking angle position.
When unlocking, it is also applicable to a cylinder lock where the key is inserted at the locking angle position, the key is turned 180 degrees counterclockwise or clockwise, and the key is removed at the unlocking angle position (the above insertion angle position). it can.

In this case, the first drive magnet of S pole or N pole is attached to the outer cylinder outer end surface of the cylinder lock that aligns with the display magnet 9 when the key is inserted into the key hole at the insertion angle position. This first regarding the central axis of the cylinder lock
A second drive magnet of N pole or S pole is attached at a position symmetrical to the drive (not shown).

With the above construction, the display magnet is driven by the drive magnet having different magnetic poles when the lock is completed and when the lock is completed, so that the lock and the unlock can be distinguished.

FIG. 12 shows the essential parts of the locking / unlocking confirmation apparatus according to an embodiment of the invention described in claim 2. The difference between the one shown in the same figure and the one described above is the difference in the driving principle of the display magnet 9. It is in.

That is, the display magnet 9 in the locking / unlocking confirmation device shown in FIG. 12 has the key stem length direction (FIG. 12).
Is a rod-shaped permanent magnet that is magnetized in the left-right direction and extends in the same direction.

Correspondingly, the magnet holding chamber 8 formed at a position substantially aligned with the drive magnets 5 and 6 in the radial direction of the cylinder lock is also substantially parallel to the key stem, and the display magnet 9 is moved in the same direction. It is guided so that it can be moved.

The display magnet 9 is colored in different colors on one end side and the other end side with respect to the center in the lengthwise direction.

In the embodiment shown in FIG. 12, a viewing window (not shown) is formed in a substantially central portion of the magnet holding chamber 8 so that the portion of the display magnet 9 in the magnet holding chamber 8 can be visually recognized from the outside. Has become.

Note that, in FIG. 12, the parts denoted by the same reference numerals as those in FIGS. 2 to 9 show the parts equivalent to those figures.

In the locking / unlocking confirmation device according to the second aspect of the present invention configured as described above, if the magnetic pole of the drive magnet 5 (6) that comes closest to the display magnet 9 at the time of locking / unlocking is S, the display magnet. 9 is attracted to the S pole and moves in the direction approaching the drive magnet as shown in FIG.

On the other hand, if the drive magnet is the N pole, the display magnet 9 faces the drive magnet with the same magnetic pole, and therefore moves in the direction away from the drive magnet by the magnetic repulsive force.

In any case, as is clear from FIG. 12, the moving position of the display magnet 9 is the drive pin 21,
The brake action of the brake spring 23 and the trigger 24 keeps it stable in a normal state.

[Brief description of drawings]

FIG. 1 is a front view of a cylinder lock provided with a lock / unlock device according to the present invention.

FIG. 2 is a vertical cross-sectional view of a key pick provided with the locking / unlocking confirmation device according to the present invention.

FIG. 3 is a plan view of a knob base.

FIG. 4 is an external perspective view of a knob base.

FIG. 5 is a plan view of a knob lid.

FIG. 6 is a plan view of the knob base having functional members mounted thereon, showing a case where a key is inserted into a key hole.

7 is a partially enlarged cross-sectional view of the display magnet brake mechanism shown in FIG.

FIG. 8 is a plan view of the knob base body on which the functional member is mounted, showing a normal state in which the key is pulled out from the key hole.

FIG. 9 is an external perspective view of a trigger.

FIG. 10 is a plan view of a knob base on which a functional member and a key are mounted.

FIG. 11 is a diagram for explaining driving of a display magnet by a drive magnet.

FIG. 12 is a diagram showing an embodiment of the invention described in claim 2;
The top view of the picking base | substrate similar to FIG.

[Explanation of symbols]

 1 outer cylinder 2 inner cylinder 3 keyhole 5 first drive magnet 6 second drive magnet 7 knob 8 magnet holding chamber 9 display magnet 18 viewing window 21 first drive pin 22 second drive pin 23 brake spring 24 trigger 25 trigger spring 26 Cam part

Claims (2)

[Claims] 1. A drive magnet, which is mounted on an outer end surface of an outer cylinder of a cylinder lock at a predetermined angular position and is made of a permanent magnet magnetized in the axial direction of the inner cylinder, a key having a knob made of a non-magnetic material, and Inside the key knob, a magnet holding chamber formed near the front end surface facing the cylinder lock and at a position substantially aligned with the drive magnet in the radial direction of the cylinder lock when the key is inserted into the key hole; A permanent magnet forming a rotating body that is magnetized in a direction perpendicular to the axis, and one outer peripheral surface and the other outer peripheral surface are painted in different colors with respect to a plane including the central axis and parallel to the magnetizing direction. With the central axis substantially perpendicular to the stem of the key, the display magnet rotatably housed in the magnet holding chamber and at least one side of the knob are opened so that the magnet holding chamber can be looked into. Peep window And a drive pin storage chamber that is connected to the magnet holding chamber and extends in a direction substantially perpendicular to the key stem, a drive pin that is movably guided in the drive pin storage chamber, and a space between the drive pin and the display magnet. The guide spring is guided movably in the front-rear direction in the key knob on the side opposite to the magnet holding chamber with respect to the drive pin storage chamber and the brake pin storage chamber, and is biased in a direction projecting forward. A cam part that pushes the drive pin outward in the radial direction of the cylinder lock in a normal state where it is pulled out from the key hole of the cylinder lock and one end projects from the front end surface of the knob, and the display magnet is elastically pressed through the brake spring. A locking / unlocking confirmation device characterized by having a trigger formed with. 2. A drive magnet, which is a permanent magnet attached to the outer end surface of the outer cylinder of the cylinder lock at a predetermined angular position and is magnetized in the axial direction of the inner cylinder, and a key having a knob made of a non-magnetic material. Inside the key knob, when the key is inserted into the key hole, it is formed at a position that is substantially aligned with the drive magnet in the radial direction of the cylinder lock, and is close to the front end face facing the cylinder lock in the length direction of the key. A magnet holding chamber extending in the length direction and a rod-shaped permanent magnet magnetized in the length direction, and one end side and the other end side of the center in the length direction are painted in different colors respectively, and the key stem A display magnet housed in a magnet holding chamber in a state substantially parallel to the
A viewing window opened on at least one side surface of the knob so that the magnet holding chamber can be viewed, and a drive pin storage chamber that is connected to the magnet holding chamber and extends in a direction substantially perpendicular to the key stem, A drive pin that is movably guided in the drive pin storage chamber, a brake spring that is arranged between the drive pin and the display magnet, and a front-back direction in the key knob on the side opposite to the magnet holding chamber with respect to the drive pin storage chamber. In the normal state in which the key is pulled out from the key hole of the cylinder lock and one end projects from the front end face of the knob, the drive pin is moved to the radius of the cylinder lock. A locking and unlocking confirmation device, which has a cam portion that pushes outward in the direction and that presses the display magnet via a brake spring.