JP3897315B2 - Locking / unlocking confirmation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a locking / unlocking confirmation device that can display the latest locking / unlocking state of a lock on a key and visually check the display of the key so that the locking / unlocking state of a dwelling unit or an automobile can be confirmed even when away from home.
[0002]
[Prior art]
Various so-called locking / unlocking confirmation devices having the above-described functions are currently proposed. For example, the locking / unlocking confirmation device proposed by Japanese Patent Application No. 2-145163 (JP-A-4-38382) The idea is excellent in that it is not necessary to use a battery for displaying the state.
[0003]
In this locking / unlocking confirmation device, a small columnar display magnet magnetized in the radial direction is rotatably mounted in the knob of the key, and on the other hand, it is mutually attached along the movement path of the display magnet on the end face of the cylinder lock. A dry magnet having a different magnetic direction is disposed, and the display magnet is reversed using a magnetic attractive force and a magnetic repulsive force generated between the dry magnet and the display magnet when they are close to each other.
[0004]
[Problems to be solved by the invention]
Since the above-described locking / unlocking confirmation device uses magnetism as the rotational power of the display magnet, it is sensitive to the distance between the dry magnet and the display magnet, and when the distance between the two becomes large, the display magnet There is a problem in that the rotational driving force of the display device suddenly decreases and the reliability of display decreases.
[0005]
In addition, if the parts are worn due to long-term use of the key, or if dust or moisture enters the space that accommodates the display magnet, the display magnet may not rotate smoothly, and the locking / unlocking confirmation function may not be maintained.
[0006]
Furthermore, the display magnet simply turns silently within the key knob during the lock / unlock operation with the key, so there is no positive indication to the user unless the display in the viewing window is visually confirmed. .
[0007]
Therefore, there remains anxiety that it cannot be easily determined whether or not the locking / unlocking confirmation device has been reliably operated.
[0008]
The present invention provides a locking / unlocking confirmation device that eliminates the above-mentioned various problems and anxiety in use, operates reliably for a long period of time, and also has a function of actively transmitting the operation of the device to the user during locking / unlocking. The purpose is to do.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 is a cylinder lock in which a spiral cam is formed on the inner surface of a cylindrical projection projecting from an end surface of an outer cylinder, and a key body and a knob. A key fitted in a relatively movable manner in the length direction of the main body, and at least one pin protruding in the width direction of the key body at the front end of the knob. Rutotomoni engaged with the cam, the reaction force when locking engagement edge or the unlocking when engaging edge of the cam exhibits a pin when turning the knob of the key, the length direction of the component force of the key body, The relative position of the knob with respect to the key body can be switched, while a display for displaying the relative position between the key body and the knob is provided on a part of the knob.
[0010]
According to a second aspect of the present invention, there is provided a cylinder lock in which a spiral cam is formed on the inner surface of a cylindrical protrusion projecting from an end surface of the outer cylinder, and a key body and a knob in the length direction of the key body. A key fitted in a relatively movable manner, and at least one pin projecting in the width direction of the key body is planted at the front end of the knob, and the pin and cam are engaged when locking and unlocking. When the key knob is turned , the relative force of the knob relative to the key body is determined by the component force in the length direction of the key body of the reaction force exerted on the pin by the engagement edge when locking or unlocking the cam. On the other hand, an indicator that displays the relative position of the key body and the knob part is provided on a part of the knob, and on the other hand, the knob appears in the knob along the key body from the front end face of the knob. There is a possible trigger cam, and the trigger cam protrudes from the front end face of the knob at all times, A locking device is provided in which relative movement in the length direction is prohibited, and when the lock is unlocked, the trigger cam is pushed by the end face of the cylinder lock in the direction of immersing into the knob and the above movement is permitted. .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
Incidentally, there are, of course, exceptions to the key operation mode of currently used cylinder locks, but there are two types.
[0012]
One of them is a key body with the word placed horizontally and inserted into the keyhole, rotated 90 degrees clockwise or counterclockwise, and locked back by 90 degrees counterclockwise or clockwise. When removing and unlocking, it is the first type in which after the key body is inserted into the keyhole, it is unlocked by turning 90 degrees counterclockwise or clockwise, returning to the insertion angle position, and then unlocking the key.
[0013]
The other is to insert the key body word vertically into the keyhole, turn it clockwise or counterclockwise 180 degrees, lock it, remove it from the keyhole as it is, and unlock it. This is the second type in which after the key body is inserted into the hole, it is unlocked by turning it 180 degrees counterclockwise or clockwise, and the key is pulled out as it is.
[0014]
Although the present invention can be applied to either type of cylinder lock by changing the shape of the cam, the first type will be described first for convenience.
[0015]
1 and 2, reference numeral 1 indicates an outer cylinder, reference numeral 2 indicates an inner cylinder, and a cylinder lock having the outer cylinder 1 and the inner cylinder 2 is a key body having a key groove formed on a side edge. The word is leveled and inserted into the keyhole 3, for example, rotated 90 degrees clockwise (in the figure, from the sign B to the sign C), locked, and returned counterclockwise 90 degrees (in the figure, the sign C (Direction from B to B) It is assumed that the key is pulled out.
[0016]
A cylindrical projection 4 is formed on the outer end surface of the outer cylinder 1, and the inner diameter thereof is larger than the width dimension W (see FIG. 5) of the front end portion of a key knob 8 described later. Is formed with a spiral cam 5.
[0017]
The outer periphery of the cylindrical protrusion 4 is tapered to improve the appearance and not to be caught when clothes or the like are touched.
[0018]
FIG. 3 shows a development view of the cam 5, and the cylindrical protrusion 4 is cut along its generatrix at the angular position indicated by the symbol A in FIG. It is the figure which looked at this from the inside.
[0019]
In FIG. 3, the hatched portion is a cam groove 5a defined by a locking engagement end edge 5b and an unlocking engagement end edge 5c arranged at a predetermined angular interval. The portion that is deeper than the inner surface and is not hatched indicates the inner surface of the cylindrical protrusion.
[0020]
In FIG. 3, the lower side (front side) shows the outer end of the cylindrical projection, and the upper side (back side) shows the base end (cylinder lock side) of the cylindrical projection.
[0021]
As is apparent from FIG. 3, the cam 5 has a double right-hand thread shape in which the locking engagement edge 5b and the unlocking engagement edge 5c are formed at predetermined angular intervals. It is formed so as to proceed from the near side to the far side in the clockwise direction toward the reference C.
[0022]
In addition, an annulus is formed on the front side of the cam groove 5a so that the cam groove 5a cannot be seen directly from the front. However, the annulus is notched at the angular positions B and D in FIG. And serves as an inlet 5d of a pin 10 (see FIG. 5) to be described later.
[0023]
4 and 5 show a key 6. The key 6 includes a key body 7 and a knob 8 in which a key groove is formed on a side edge or a magnet is embedded. In the illustrated embodiment, the key body 7 is a stepped rectangular housing.
[0024]
The knob 8 is a thick plate made of a non-magnetic material such as synthetic resin, and has a convex shape as a whole. A square hole 9 slidably fitted to the base of the key body 7 is formed in the center thereof. It penetrates.
[0025]
Furthermore, a pair of pins 10 and 10 projecting in the width direction of the key body 7 are implanted at the front end of the knob 8. Note that the width W of the front end of the knob in which this pin is implanted is smaller than the inner diameter of the cylindrical protrusion 4, and the front end of this knob can enter the inside of the cylindrical protrusion 4.
[0026]
Even if only one pin 10 is used, considering the engagement operation with the cam described later, two pins 10 are more suitable in terms of force balance.
[0027]
In addition, the knob 8 is provided with a click device 11.
[0028]
The click device 11 includes a click ball 12 housed in an unnumbered click ball hole orthogonal to the square hole 9, a click spring 13 that urges the click ball 12 inward, and a reaction force of the click spring 13. And a set screw 14 for closing the opening of the click ball hole.
[0029]
Corresponding to the click device 11 described above, two V-shaped grooves 15a and 15b are formed along the length direction of the key body 7 at the base side edge of the key body 7, and the click ball 12 is formed of these V-shaped grooves. It selectively engages either 15a or 15b.
[0030]
On the other hand, a part of the surface of the knob 8 is cut into, for example, a rectangle to form a display window 16 through which one of the marks 17a and 17b drawn on the rear side surface of the key body can be seen. It has become.
[0031]
Thus, the relationship between the V-shaped groove 15 and the mark 17 is that when the V-shaped groove 15a is engaged with the ball 12, the mark 17a is aligned with the display window 16, and the V-shaped groove 15b is engaged with the ball 12. , A mark 17b matches the display window 16.
[0032]
Next, the operation of the locking / unlocking confirmation apparatus according to the present invention will be described.
In FIG. 5, the key 6 shows a state immediately after unlocking, and the key body 7 is pulled out from the knob 8. That is, the mark 17 b matches the display window 16.
[0033]
In this case, it is assumed that the mark 17b indicates the unlocked state, and when the key in this state is inserted into the keyhole 3, the pins 10 and 10 pass through the inlets 5d and 5d, respectively, and the cam groove on the inner surface of the cylindrical projection 4 Engaging with 5a, the pin 10 is in the position of α close to the inlet 5d in FIG.
[0034]
At the same time, all tumblers of the cylinder lock are aligned on the shear line by the key, and the inner cylinder 2 can be rotated.
[0035]
When the key 6 is rotated clockwise in this state, the pin 10 is pushed to the left in FIG. 3, so that the pin 10 is moved to the back by the wedge action generated between the engaging edge 5b at the time of locking. That is, the component force in the direction close to the cylinder lock is received.
[0036]
Since the key body 7 is restrained by the inner cylinder 2 while the inner cylinder is rotating, the knob 8 relatively moves in the direction of the cylinder lock. In other words, the key body 7 is relatively immersed in the knob 8.
[0037]
Therefore, when the key is turned 90 degrees and the pin 10 reaches the position β in FIG. 3, the V-shaped groove 15 a engages with the ball 12 and the mark 17 a matches the display window 16.
[0038]
Next, turn the key 90 degrees counterclockwise to return it to its original position. At this time, since the pin 10 only moves horizontally from the position β to the position γ in FIG. 3 and does not receive external force, the knob remains in the locked state.
[0039]
The state of this knob, that is, the state where the mark 17a matches the display window 16 indicates the locked state.
[0040]
In the case of unlocking, when the key is inserted into the keyhole, the pin 10 comes to the position γ in FIG. This is because, after locking, the key body 7 is immersed in the knob 8, and the pin 10 is relatively close to the tip of the key body.
[0041]
In this state, the key is unlocked by turning 90 degrees counterclockwise.
Then, since the pin 10 is pushed rightward from the position γ in FIG. 3, the pin 10 receives a component force pushed toward the front due to a wedge action generated between the pin 10 and the engagement end edge 5c. 3 moves from γ to δ in FIG.
[0042]
At this time, since the key body 7 is restrained by the inner cylinder and cannot move, the knob 8 is pulled out relatively to the near side and returned to the position shown in FIG.
[0043]
In this state, the key is rotated 90 degrees clockwise to return to the original position and the key 6 is removed from the keyhole. At this time, the pin 10 only moves horizontally from the position δ to the position α in FIG. 3 and receives no external force, so the unlocking display shown in FIG. 5 does not change.
[0044]
Therefore, if the marks 17a and 17b are displayed so that the locking and unlocking can be easily recognized, the latest unlocking and unlocking status can be confirmed just by looking at the key even when the key is removed. it can.
[0045]
As the display, for example, the mark 17a may be colored blue, the mark 17b may be colored red, the mark 17a may be written as closed, and the mark 17b may be written as open.
[0046]
Next, an embodiment in which the present invention is applied to a second type cylinder lock will be described.
[0047]
In FIG. 6, the cylinder lock having the outer cylinder 1 and the inner cylinder 2 is inserted into the key hole 3 with the word body of the key vertical, and is locked, for example, rotated 180 degrees clockwise and pulled out as it is.
[0048]
In the case of unlocking, the word of the key body is vertically inserted into the key hole 3 and unlocked by turning counterclockwise by 180 degrees and pulled out as it is at the unlocking angle position.
[0049]
The cylindrical projection 4 is formed on the outer end surface of the outer cylinder 1, and the spiral cam 5 is formed on the inner diameter surface, as in the case of the first type cylinder lock.
[0050]
FIG. 7 is a development view of the cam 5, and is a view in which a cylindrical protrusion is cut open and viewed from the inside at a position indicated by a symbol A in FIG. 6.
[0051]
In the figure, the hatched portion is a cam groove 5a defined by the locking engagement end edge 5b and the unlocking engagement end edge 5c as in the cam shown in FIG. The portion that is deeper than the surface and is not hatched indicates the inner surface of the cylindrical protrusion.
[0052]
Thus, the width of the groove 5a is slightly larger than the outer diameter of the pin 10 protruding from the tip of the knob 8.
[0053]
As can be seen from this figure, the cam has a double right-hand thread shape, and constitutes a positive cam.
[0054]
On the other hand, the structure of the key 6 is the same as that of the first type cylinder lock, but the key groove shape engraved in the key body 7 corresponds to the second type cylinder lock. Needless to say.
[0055]
When the key 6 indicating the unlocked state shown in FIG. 5 is inserted into the key hole 3, the pin 10 comes to the position α in FIG.
[0056]
When the key is rotated 180 degrees clockwise in this state and locked, the pin 10 is pushed to the left in FIG. 7, and the upward force in FIG. 7 shows the reaction force that the engagement end edge 5b exhibits on the pin 10 during locking . As a result, the pin 10 is pushed toward the back to reach the position β, and the knob 8 relatively moves in the direction of the cylinder lock.
[0057]
Therefore, the V-shaped groove 15 a engages with the ball 12 and the mark 17 a matches the display window 16. When the key is pulled out here, the pin 10 moves downward from the position β in FIG. 7 and comes out of the inlet 5d.
[0058]
When unlocking, the key is inserted in the same manner, then rotated 180 degrees counterclockwise and unlocked, and the key 6 is pulled out from the keyhole at the unlocking angular position.
[0059]
When the key is inserted into the keyhole for unlocking, the knob 8 has moved in the direction approaching the tip of the key body 7, so that the pin 10 enters the position β in FIG. 7 from the beginning.
[0060]
When the key is rotated counterclockwise in this state, the pin 10 is pushed rightward from the position β in FIG. 7, and as a result, returns to the position α opposite to the above.
[0061]
As a result, the V-shaped groove 15a engages with the ball 12, and the mark 17b matches the display window 16 and returns to the original position shown in FIG.
[0062]
The function of the marks 17a and 17b for displaying the unlocked / unlocked state through the display window is the same as in the case of the first type cylinder lock, and therefore a more detailed description is omitted.
[0063]
In this embodiment, as a means for displaying the locking / unlocking state, a mark marked on the side surface of the display window and the key body is used, but the relative position change between the key body and the knob can be displayed. If there is, other methods can be used.
[0064]
Although not shown, for example, if a protrusion is provided on the rear end surface of the key body and this protrusion protrudes outward from the rear end surface of the knob, the lock state is indicated. A method is also conceivable in which the unlocked state is indicated if it is retracted.
[0065]
In this embodiment, two pins protrude from the tip of the knob, but functionally one pin may be used.
[0066]
However, since the relative position between the key body and the knob is changed by the interaction between the pin and the cam, if the number of the pin is one, the interaction between the pin and the cam is eccentric to one side. Since it is considered that the left and right movements of the key are not uniform, and smooth sliding is hindered, two pins are better.
[0067]
Next, the invention described in claim 2 will be described.
[0068]
The invention according to claim 2 is essentially the same as the invention according to claim 1 with respect to the locking / unlocking confirmation mechanism itself, but for securely holding the locking / unlocking state when the key is carried. The difference is that a locking device is attached.
[0069]
Next, the locking device 20 will be described in more detail with reference to FIGS.
[0070]
8 shows a plan view of the key 6 when the key is carried, and the click ball 12 of the click device 11 is engaged with the V-shaped groove 15b. That is, as in the above-described embodiment, the key body 7 is pulled from the knob 8 and shows the latest unlocked state.
[0071]
As shown in FIGS. 8 and 10, the locking device 20 is attached to a slide plate 21 in which a lock pin 22 extending in the thickness direction of the key body 7 is implanted and a direction in which the slide plate is pressed against the key body 7. The lock spring 23 is energized, a set screw 24 that supports the reaction force of the lock spring 23 and closes the opening of the knob 8, and a trigger cam 18 that controls the slide plate 21.
[0072]
Corresponding to the locking device 20 described above, two rectangular grooves 19a and 19b having a width slightly larger than the diameter of the lock pin 22 are formed on the side edge of the key body opposite to the V-shaped grooves 15a and 15b. The interval between the square grooves is set to be equal to the interval between the V-shaped grooves 5a and 5b.
[0073]
On the other hand, a trigger cam 18 that is movable in the length direction along the key body 7 is provided in the knob 8. The shape of the trigger cam 18 is illustrated in FIG.
[0074]
The trigger cam 18 is guided so as to be movable along the length direction of the key body 7 while the side edges of the trigger cam 18 are in sliding contact with the grooves formed in the knob 8. It arrange | positions so that it may become flush | planar with the side edge which formed the square grooves 19a and 19b.
[0075]
Alternatively, the upper edge 18d of the trigger cam may be positioned slightly above the side edge where the square groove of the key body 7 is formed in FIG. In short, it is sufficient that the lock pin 22 can be completely pulled out of the square groove 19 when the trigger cam 18 is moved.
[0076]
When the key is carried, the tip 18a of the trigger cam protrudes from the front end surface of the knob 8 as shown in FIG. 8, and the inclined cam surface 18b (see FIG. 11) formed behind the side end edge 18d. The dimension of each part is set so that it is located immediately before the lock pin 22.
[0077]
Further, the rear end surface 18 c of the trigger cam 18 is urged forward by a leaf spring 25 supported by the pin 26 in the knob 8.
[0078]
In the lock device 20 configured as described above, in the state shown in FIG. 8, the lock pin 22 is engaged with the rectangular groove 19 b far from the tip of the key body 7. The relative movement of the key body 7 and the knob 8 does not change even if the key is dropped or an external force in the longitudinal direction is received in the pocket.
[0079]
On the other hand, when the key 6 is inserted into the key hole of the cylinder lock having the cylindrical protrusion 4 for locking and unlocking, the result is as shown in FIG.
[0080]
That is, when the key 6 is inserted into the keyhole of the cylinder lock, the tip 18a of the trigger cam 18 is pushed backward (rightward in the figure) by the outer end surface of the cylinder lock against the elasticity of the leaf spring 25, In the moving process, the lock pin 22 of the slide plate 21 is pushed outward (upward in the drawing) by the upward component of the force by which the cam surface 18b pushes the lock pin.
[0081]
As a result, the lock pin 22 and the square groove 19b are disengaged, and the key body 7 and the knob 8 can be moved relative to each other.
[0082]
Here, when the key is turned in the locking direction, as described in the description of the invention of claim 1, the key body is pulled into the knob, and the rear end of the key body 7 as shown in FIG. Protrudes outward from the rear end face of the knob 8.
[0083]
At the same time, the lock pin 22 is aligned with the square groove 19 a in the length direction of the key body 7.
[0084]
Next, when the key is pulled out from the cylinder lock in this state, the trigger cam 18 moves forward by the elastic force of the leaf spring 25, and the lock pin 22 enters the square groove 19a by the elastic force of the lock spring 23. Mutual movement between the main body and the knob is prohibited.
[0085]
As a result, as shown in FIG. 14, the key body is locked in a state in which the rear end of the key body protrudes from the rear end surface of the knob.
[0086]
As described above, in the second embodiment, when the rear end of the key body is flush with the rear end surface of the knob or retracted, it indicates an unlocked state, and when it protrudes, it indicates a locked state.
[0087]
Therefore, even in a dark place, just touching the rear end face of the knob with your fingertips, you can know the positional relationship between the rear end face of the key body and the rear end face of the knob, and you can check the locked / unlocked state. There is an advantage that it is easy to use for people with disabilities.
[0088]
In the illustrated embodiment, the state in which the rear end of the key body 7 protrudes from the rear end of the knob 8 corresponds to the locked state, which is reminiscent of the locked state in which the dead bolt protrudes from the free side edge of the door. This is because of the reason, and there is no deep meaning.
[0089]
In addition, when the key is carried, the key body and the knob are locked so that they cannot move relative to each other, so that the key may be inadvertently dropped on the floor or between the key body and the knob with the fingertip. Even if force is applied, the position of the key body does not move, and an accurate locked / unlocked state can always be maintained.
[0090]
【The invention's effect】
As described above, the locking / unlocking confirmation apparatus of the present invention does not use a magnet or the like, and mechanically rotates the key when the key is locked / unlocked. Because it converts to change, it works reliably and is very reliable.
[0091]
In addition, when the key body changes relative position with respect to the knob, this action activates the click device 11, so that a sound is generated and the fingertip that grasps the knob feels an impact force. There is also an effect that the user can easily detect that the locking device has been operated.
[0092]
In addition, the protrusion amount of the cylindrical protrusion can be made as small as about 6 mm in total if the thickness of the ring portion in FIG. 3 is 1 mm, the pin diameter is 2 mm, and the movement amount of the mark is 3 mm. There is no need to force a large dimension change on the cylinder lock side.
[Brief description of the drawings]
FIG. 1 is a front view of a first type cylinder lock equipped with a locking / unlocking confirmation device according to the present invention.
FIG. 2 is a side view of a first type cylinder lock provided with a locking / unlocking confirmation device according to one embodiment of the present invention.
FIG. 3 is a development view of a cam in the case of a first type cylinder lock.
FIG. 4 is a side view of a key including a locking / unlocking confirmation device according to an embodiment of the present invention.
FIG. 5 is a front view of a key provided with a locking / unlocking confirmation device according to one embodiment of the present invention.
FIG. 6 is a front view of a second type cylinder lock provided with a locking / unlocking confirmation device according to one embodiment of the present invention.
FIG. 7 is a development view of a cam in the case of a second type cylinder lock.
FIG. 8 is a front view of a key provided with a locking / unlocking confirmation apparatus according to a second embodiment of the present invention.
FIG. 9 is a side view of a key provided with a locking / unlocking confirmation apparatus according to a second embodiment of the present invention.
10 is a cross-sectional view taken along arrows XX in FIG.
FIG. 11 is a plan view of a trigger cam.
FIG. 12 is an explanatory diagram when the key displaying the unlocked state in the second embodiment is inserted into the cylinder lock.
13 is an explanatory diagram showing a state immediately after locking the key from the state of FIG.
14 is an explanatory view showing a state in which the key is pulled out from the cylinder lock from the state shown in FIG. 13;
[Explanation of symbols]
1 the outer cylinder 2 inner cylinder 3 keyhole 4 cylindrical projection 5 cam 5a cam grooves 5b when locking engagement edge 5c unlocking when engaging edge 6 key 7 key body 8 knob 9 square hole 10 pin 16 display window 17a marks 17b Mark 18 Trigger cam 19a Square groove 19b Square groove 20 Locking device 21 Slide plate 22 Lock pin 23 Lock spring 24 Set screw 25 Leaf spring 26 Pin

Claims (2)

A cylinder lock in which a spiral cam is formed on the inner surface of a cylindrical projection projecting from the end surface of the outer cylinder, and a key in which a key body and a knob are fitted so as to be relatively movable in the length direction of the key body. It has, at the front end of the knob, implanted the at least one pin projecting in the width direction of the key body, upon unlocking, engaging a pin and cam Rutotomoni, the cam when turning the knob of the key The relative position of the knob relative to the key body can be switched by the component force in the length direction of the key body of the reaction force exerted on the pin at the locking engagement edge or the unlocking engagement edge , A locking / unlocking confirmation apparatus, wherein a display for displaying a relative position between a key body and a knob is provided on a part of the knob. A cylinder lock in which a spiral cam is formed on the inner surface of a cylindrical projection projecting from the end surface of the outer cylinder, and a key in which a key body and a knob are fitted so as to be relatively movable in the length direction of the key body. It has, at the front end of the knob, implanted the at least one pin projecting in the width direction of the key body, upon unlocking, engaging a pin and cam Rutotomoni, the cam when turning the knob of the key The relative position of the knob relative to the key body can be switched by the component force in the length direction of the key body of the reaction force exerted on the pin at the locking engagement edge or the unlocking engagement edge , An indicator that displays the relative position of the key body and the knob part is provided in a part of the knob. On the other hand, the knob has a trigger cam that can be projected and retracted along the key body from the front end of the knob. The cam protrudes from the front end face of the knob, and relative movement in the length direction with respect to the knob of the key body is prohibited. Is, at the time of unlocking, locking and unlocking confirmation apparatus characterized by triggering cam by the end face of the cylinder lock is pushed in the direction of immersion in knob provided a locking device for movement described above is allowed.

Images