JP2001227215A - Signal takeout mechanism for lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To take out anti-theft signals by means of a rational mechanism and enhance the convenience of operations. SOLUTION: In a signal takeout mechanism for a lock, a horizontal shaft 28 is provided with a control gear 9 for meshing with cylinder engagement teeth 25, and is provided also with an output member 10 having an engagement projection 31 which engages the control finger section 30 of the control gear 9. An alarm switch 11 capable of abutting the switch drive 35 of the output member 10 is disposed within a lock box 1, and when a cylinder tumbler 7 is rotated by a predetermined amount by means of a master key, a deadbolt 3 projects from a front 2. When the master key is further rotated by +α, the cylinder tumbler 7 rotates against the spring force of an energizing spring 12 mounted within the lock box 1 and the control gear 9 rotates in combination with the cylinder tumbler 7, with the output member 10 moving the alarm switch 11 to an on position under control of the control gear 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock signal extracting mechanism, and more particularly, to a lock signal extracting mechanism adapted to extract a security signal when going out. Therefore, the present invention is a lock signal extracting mechanism mainly used in a security system.

[0002]

2. Description of the Related Art Generally, locks in which dead bolts protrude from the front when a thumb tunder and a cylinder dharma are respectively rotated from inside and outside of a room are widely used. This type of lock is provided with a latch for temporary fixing in addition to a dead bolt for locking.

[0003] Conventionally, there are many separate devices of this kind from a lock called a "key switch" having a signal extracting mechanism for extracting a signal for security when going out. Of course, there is a concept of providing a signal extraction mechanism on a lock having a deadbolt and a latch.

However, in the case of going out, it is necessary to first insert a duplicate key into a general lock and turn the cylinder darma in the locking direction, then insert a key into the key hole of the key switch and turn on the alarm switch. Therefore, the operation becomes troublesome twice, which is a so-called troublesome operation. Of course, there is also a problem that it takes a long time for the mounting operation. On the other hand, the latter is not easy to rationally combine each member. However, at present, there is a demand for the appearance of a lock signal extraction mechanism that can be applied to ordinary locks.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned demands, and a first object of the present invention is to provide a lock mechanism which is generally used, and which is used to set a cylinder dharma with a duplicate key when going out. When the deadbolt protrudes from the front, and the "duplicate key is rotated by + α", the signal for the security system can be reliably taken out (when the alarm switch is ON). ). The second purpose is that when the finger force is released after turning the duplicate key by + α, the deadbolt automatically or easily returns to -α (the cylinder dharma returns to the ordinary locking position), and the duplicate key is rotated. It can be pulled out smoothly. Thereby, the convenience of the operation can be improved. A third object is that when the alarm switch disposed in the lock box has a movable contact piece, the output member is not pushed back from a desired position when the alarm switch is turned on. .
A fourth object is that the output member does not interlock with rotation of the thumb turn darma in the locking direction from the indoor side. A fourth object is to reduce the number of parts and rationally utilize the effective space in the lock box. That is, the purpose is to rationally combine the members.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a signal take-out mechanism Y for a lock X in which a dead bolt 3 protrudes from a front 2 when a thumb-turn dharma 5 and a cylinder dharma 7 are respectively rotated from inside and outside the room. The Dharma 5 and the Cylinder Dharma 7 are combined face to face with each other, and the control gear 9 meshing with the thumb-turn engagement teeth 21 and the cylinder engagement teeth 25 formed on these Dharmas 5 and 7 is provided on the horizontal shaft 28. An output member 10 having an engaging projection 31 which engages with a control finger 30 of the gear 9 is provided on the horizontal shaft 28, and the alarm switch 11, which can be brought into contact with the switch drive unit 35 of the output member 10, is connected to the lock box 1. The dead bolt 3 protrudes from the front 2 when the cylinder darma 7 is rotated a predetermined amount with a duplicate key when going out. Is rotated by + α ”, the cylinder dharma 7 rotates against the spring force of the biasing spring 12 provided inside the lock box 1, and the control gear 9 rotates in conjunction with the cylinder dharma 7, and the output member Reference numeral 10 is characterized in that the alarm switch 11 is turned on under the control of the control gear 9.

[0007]

FIG. 1 schematically shows an example of an embodiment of the present invention from a "thumb turn side". First, for convenience of explanation, the environment of the embodiment of the present invention will be described with reference to FIG. 1
Is a lock box, 2 is a front, 3 is a deadbolt, and 4 is a latch. The lock X of the present invention is similar to a general lock,
When returning from outside and rotating the thumb-turn, the thumb-turn dharma 5 rotates counterclockwise, and the deadbolt 3 protrudes from the front 2 (so-called locked state). The Samtern Dharma 5 inserts a duplicate key (not shown) from the cylinder Dharma side into the center hole 6 of the Samtern Dharma 5,
When the duplicate key is rotated, the deadbolt 3 projects from the front 2 and becomes locked as in the case where the thumb turn is operated from the inside. Generally, the thumb-turn operation is performed from the indoor side, so that the thumb-turn dharma 5 rotates counterclockwise when locked, based on FIG. 1 viewed from the indoor side.

On the other hand, on the side opposite to the Samtan Dharma 5, that is, on the outdoor side, there is provided a cylinder Dharma 7 (see FIGS. 6 to 9) which slides and rotates coaxially so as to overlap the Samtern Dharma 5. The deadbolt 3 protrudes from the front 2 when a duplicate key (not shown) is inserted into the cylinder darma 7 into the darma hole 8 and the cylinder darma 7 is rotated clockwise.

As described above, the dead bolt 3 of the lock X is
From the indoor side, the thumb turn darma 5 is rotated counterclockwise, while from the outdoor side, the cylinder darma 7 is rotated clockwise to project from the front 2.

Now, a signal extraction mechanism Y for a security lock is described.
In the ordinary general lock X, the thumb turn dharma 5 and the cylinder dharma 7 provided in the lock box 1, the control gear 9 meshing with these dharma 5 and 7, and an alarm switch for taking out a signal for crime prevention are provided. It is characterized by a combination of an output member 10 for turning on / off and an alarm switch (microswitch as an example) 11. Also,
When the finger is loosened after turning the duplicate key by + α angle to these main members 5, 7, 9, and 10, the urging spring 12 is automatically or easily returned to the lock box 1 so that the dead bolt returns to -α angle.
It is also characterized by its interior. Further, it is also characterized in that the lock spring 13 inside the lock box is provided. This is because, when the alarm switch 11 provided in the lock box 1 has the movable contact piece 11a, when the movable contact piece 11a is pressed and the alarm switch is turned on, the output member 10 is set to the desired state. This is to prevent the member from being pushed back from the position.

Here, the biasing spring 12 will be described. The urging spring 12 is attached to the left corner of the lock box 1 via a spring support shaft 14 as shown in FIG. Thus, one end 12a of the biasing spring 12 is pressed against the inner wall surface of the lock box 1, while the other end 12b is pressed against the semicircular outer wall surface or the engaging surface 25b of the cylinder darma 7. The locking spring 13 has a lower end 13 a facing the output member 10 engaged with an engagement groove 36 formed at an appropriate portion of the outer peripheral wall of the output member 10, and when the alarm switch 11 is in an ON state. The output member station 10 is locked at a predetermined position. Hereinafter, these members will be mainly described.

FIG. 2 is an explanatory view showing five members, which are main parts of the present invention, from the "thumb turn side". According to the present invention, when the cylinder darma 7 is rotated to a predetermined position with a duplicate key at the time of locking, the deadbolt 3 protrudes from the front 2 (locked state), and furthermore, "when the duplicate key is turned by + α angle" in the same direction, an alarm / alarm is issued. The switch 11 is turned on. Therefore, the description should be made from the cylinder dharma 7 (outdoor) side. However, since the characteristic features of the invention do not appear well in the drawing (intelligible), for convenience of description, the “Sumtern dharma 5”, “Cylinder” Dharma 7 ",
"Control gear 9", "output member 10", "biasing spring 1"
2 "and" locking spring 13 "are shown in perspective.
Therefore, these members will be described in order.

First, as shown in FIG. 1, the thumb turn derma 5 is rotatably provided in a portion of the lock box 1 near the upper left corner. As is well known, the thumb darma 5 is connected to a thumb turn (not shown) and has the above-described center hole 6.

Reference numeral 15 denotes a disk-shaped engaging plate having an arcuate guide hole 16 in the circumferential direction. The engaging plate 15 is directed toward the rear end of the dead bolt 3 (extends in the radial direction). A lever portion 17 is provided continuously. An end of the lever portion 17 is connected to a dead bolt control rod 19 that passes through a rear end of the dead bolt 3 via a pivot 18. In addition,
Below the deadbolt control rod 19, a deadbolt locking bar 20 is appropriately disposed.

Reference numeral 21 denotes a portion of the engagement plate portion 15 projecting in a semicircular shape, and a thumb-turn engagement tooth 21 formed on the outer peripheral portion of the portion where the guide hole 16 is located. The number of teeth of the thumb-turn engagement teeth 21 is smaller than the number of teeth of the cylinder engagement teeth 25 of the cylinder darma 7 described later. Further, in this embodiment, the thumb-turn engaging teeth 21 are provided with the cylinder damper 7.
Is formed on the outer peripheral portion away from the lever portion 17 so as to mesh with the control gear 9 even at the initial position of the control gear 9.

Reference numeral 22 denotes a fitting shaft protruding from one side surface of the engaging plate portion 15. Inside the fitting shaft 22, a circular fitting recess 2 of a cylinder darma 7 (not shown), which will be described later, is provided.
A circular fitting recess similar to 7 is formed. The thumb turn derma 5 rotates cooperatively around the fitting shaft portion 22.

Next, the cylinder dharma 7 is rotatably provided in the lock box 1 so as to face the thumb turn dharma 5. The cylinder darma 7 is usually connected to an inner cylinder of a cylinder lock (not shown). Thus, the cylinder dharma 7 is slightly disc-shaped as a whole,
A part 2 that protrudes in a semicircular shape like Samtern Dharma 5
The cylinder engaging teeth 25 are provided substantially all around the outer peripheral portion of 5a. The outer peripheral surface on the left side of the semicircular projecting portion 25a is formed as a tapered engaging surface 25b against which the biasing spring 12 is pressed. At the center of the protruding portion 25a, an engagement pin 26 that always engages with the guide hole 16 of the thumb turn darma 5 is provided in a protruding manner. Therefore, when the thumb-turn dharma 5 is rotated, the cylinder dharma 7 is synchronously rotated to a predetermined angle via the engagement pin 26 having a clutch function.

Reference numeral 27 denotes a circular fitting recess formed from the side having the engaging pin 26. The circular fitting recess 27 communicates with the above-mentioned daruma hole 8. In addition, although not particularly shown, the cylinder dharma 7 and the Samtan dharma 5 are combined so that they do not fall apart from each other.
For example, a cylindrical fitting body is incorporated in the circular fitting recess 27.

Next, as shown in FIG. 1, one control gear 9 has a horizontal shaft 28 between the cylinder darma 7 and the Samtan dharma 5 and the alarm switch 11 fixedly arranged on the upper right of the lock box 1. It is provided rotatably via the. The control gear 9 meshes with both the cylinder engagement teeth 25 and the thumb turn engagement teeth 21. In FIG. 2, the back side and the front side of one control gear 9 are shown so as to be visible. This does not mean that there are two control gears.

Reference numeral 29 denotes a boss protruding from the side wall of the control gear 9 on the thumb turn side. Reference numeral 30 denotes an arc-shaped control finger protruding from the side wall of the control gear 9 on the cylinder side. The arc-shaped control finger portion 30 can enter a notch portion of the output member 10 described below, and can contact the claw-shaped engagement protrusion 31.

The output member 10 has a horizontal shaft 2 similar to the control gear 9.
8 are provided. Control gear 9 and output member 10
And coaxially overlap each other. As described above, the arc-shaped thick surrounding portion 34 which projects in the thickness direction of the lock box 1 and is slightly larger than the semicircular shape is continuously provided on the center plate portion 33 having the shaft hole 32 of the output member 10. I have. And
The inner diameter of the arc-shaped thick surrounding portion 34 has a size capable of receiving the control finger portion 27 described above.

The engaging projections 31 protrude radially into the notches formed by the arc-shaped thick surrounding portions 34 in the form of claws, and both side surfaces 31a, 31a are formed at both ends of the arc-shaped control finger portion 30. It is selectively engagable with the surfaces 30a, 30a.

Reference numeral 35 denotes an outer peripheral wall 34 of the arc-shaped thick surrounding portion 34.
The alarm switch driving unit 35 is formed in a protruding shape on the a. The alarm switch driving unit 35 presses the movable piece 11a of the alarm switch 11 even when the thumb turn darma 5 rotates from the initial position to the locking direction as described later. On the other hand, when the duplicate key rotates the cylinder darma 7 from the initial position in the locking direction by the duplicate key, and "when the duplicate key is turned by + α angle", the alarm signal for the security system can be reliably taken out. Thus, the movable contact piece 11a of the alarm switch 11 is pressed (FIG. 10).

Referring to FIGS. 3 to 5, a case will be described in which the output member 10 does not interlock with the thumb-turn dharma 5 even when the thumb-turn dharma 5 is turned from the indoor side.

FIGS. 3 and 4 are explanatory views as viewed from the thumb turn side. FIGS. 3A and 3B show a case where the user enters the room and tries to turn the Samtan Dharma 5 counterclockwise from the room side. At this time, the lever portion 17 of the Samtern dharma 5 is located on the left side of the center hole 6. In addition, the engagement pin 26 of the cylinder dharma 7 is located below the guide hole 16 of the thumb turn dharma 5. The upper right side of the thumb-turn engagement teeth 21 of the thumb-turn dharma 5 meshes with the control gear 9. Further, the alarm switch driving section 35 of the output member 10 is connected to the movable contact 11a of the alarm switch 11.
Away from Therefore, the alarm switch 11
This is the state of F. In addition, as shown in FIG.
The lower end surface 30a of the control finger portion 30 is separated from the one side surface 31a of the engagement protrusion 31 of the output member 10 by about 180 degrees.

Then, as shown in FIGS. 4 and 5, when the thumb-turn dharma 5 is rotated counterclockwise for locking, the control gear 9 starts to rotate clockwise as indicated by the arrow. When the thumb turn derma 5 is further rotated to a predetermined angle, the control gear 9 stops at a predetermined position. In this case, the dead bolt 3 projects from the front 2. Further, the upper end surface 30a of the control finger 30 of the control gear 9 rotates and shifts to a position where it can contact the one side surface 31a of the engagement protrusion 31 of the output member 10, but since the control gear 9 does not rotate more than necessary, The output member 10 is not rotated clockwise. Therefore, the output member 10 does not interlock with the thumb-turn dharma 5, and the alarm switch 11 remains OFF.

Next, a case where the cylinder darma 7 is rotated in the locking direction and a case where the duplicate key is further rotated by + α will be described with reference to FIGS. When the cylinder dharma 7 is rotated, the output member 10 is interlocked via the control gear 9 unlike the case of the thumb turn dharma 5.

FIG. 6 is an explanatory view as viewed from the cylinder dharma 7 side. This figure shows a case where the cylinder dharma 7 is to be turned clockwise from outside. At this time, the position of the lever portion 17 of the thumb turn derma 5 appears opposite to that in FIG. 3 and is located on the right side. The engagement pins 26 and the like of the cylinder darma 7 are imaginary lines in the drawing.

FIG. 6 shows a case in which the dead bolt 3 in the unlocked state is about to protrude from the front 2 in order to move out. In this case, since the lock X is in the unlocked state, the alarm switch 11 is OFF. Therefore, the cylinder engaging teeth 2 of the cylinder dharma 7
5 (the left part) meshes with the control gear 9. FIG.
As shown in the figure, the right end surface 3 of the control finger 30 of the control gear 9
0a is separated from one side surface 31a of the engagement projection 31 of the output member 10 by about 180 degrees. As can be understood from the schematic diagram (the uppermost diagram) showing the initial state in FIG. 10, the alarm switch driving unit 35 of the output member 10 is separated from the movable contact piece 11 a of the alarm switch 11.

Then, when the cylinder darma 7 is rotated clockwise by a predetermined amount with the duplicate key, the dead bolt 3 projects from the front 2. FIG. 7 shows a case where the control gear 9 rotates in the counterclockwise direction, whereby the output member 10 rotates in the same direction. As is apparent from FIG. , The alarm switch 11
It is still OFF. Because, as shown in the second schematic diagram from the top in FIG. 10, at this stage, even if the control gear 9 is turned clockwise by a predetermined amount, the output member 10 is not affected by the control gear 9 in any way. Because they are not. Even when the output member 10 receives the rotational friction resistance of the control gear 9, the output member 10 does not easily rotate because the lower end portion 13a of the locking spring 13 is engaged with the engagement groove 36.

Therefore, if it is desired to leave the alarm switch 11 in the ON state for a long-term absence or the like when going out, the duplicate key is rotated in the same direction by + α. The third schematic diagram from the top in FIGS. 8 and 10 shows a case where the cylinder Dharma 7 further rotates “+ α” against the spring force of the urging spring 12 in the locked state of the lock X. In this case, since the output member 10 rotates counterclockwise through the control gear 9, the alarm switch driving unit 35 of the output member 10 is rotated.
Presses the movable contact piece 11a, and as a result, the alarm switch 11 is turned on. At this time, the lower end 13a of the locking spring 13 locks the output member 10 at a predetermined position.

In this state, however, the duplicate key cannot be pulled out, and as shown in FIG.
Is restored by “α”. In this case, when the finger holding the duplicate key is released, the restoring force of the urging spring 12 acts, and the Linder Dharma 7 smoothly rotates counterclockwise.
As shown in the schematic diagram at the bottom of FIG. 0, since the arc-shaped control finger 30 of the control gear 9 merely separates from the engagement projection 31 of the output member 10, the output member 10 is locked by the locking spring 13. It is in a state of being left.

Therefore, the lock signal extracting mechanism Y of the present invention is combined with, for example, a security system (not shown).
It can be used as a lock with the meaning "Please go to a state where you can emit an alarm signal anytime you go out."

[0034]

In FIG. 2, the Samtan Dharma 5 has a guide hole 16 in the circumferential direction, in which an engagement pin projecting from the cylinder Dharma 7 is engaged. The design of the engagement relationship with the cylinder dharma 7 can be arbitrarily changed. For example, there is a case where a guide hole is formed in the cylinder dharma 7 and an engagement pin that engages with the guide hole is provided in the thumb turn dharma 5.

[0035]

As is apparent from the above description, the present invention has the following operations and effects. (1) In a commonly used lock mechanism,
When going out, turn the cylinder darma to the predetermined position with the duplicate key in the locking direction. As a result, when the dead bolt protrudes from the front, when the "duplicate key is further rotated by + α",
The signal can be reliably taken out as a signal for the security system (the alarm switch is turned on). (2) When the finger force is released after turning the duplicate key + α, the dead bolt automatically or easily returns -α (the cylinder darma returns to the ordinary lock position), and the duplicate key is pulled out smoothly. Can be. Thereby, the convenience of the operation can be improved. (3) In the case where the alarm switch disposed in the lock box has a movable contact piece, the output member is not pushed back from a desired position when the alarm switch is turned on. (4) Even if the thumb turn dharma is rotated in the locking direction from the indoor side, the output member does not interlock with it. (5) The number of parts can be reduced, and the effective space in the lock box can be rationally used.

[Brief description of the drawings]

 1 to 10 are explanatory views showing one embodiment of the present invention.

FIG. 1 is a schematic explanatory view showing an example of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main member.

FIG. 3 is an explanatory view of the unlocked state as seen from the side of the Samtan Dharma.

FIG. 4 is an explanatory view of a case in which the thumb turn dharma is rotated in the locking direction in the state of FIG. 3;

FIG. 5 is a schematic explanatory view in the case where the Samtan Dharma is rotated in the locking direction.

FIG. 6 is a schematic explanatory view of the unlocked state viewed from the cylinder darma side.

FIG. 7 is a schematic explanatory view of the locked state as viewed from the cylinder darma side. However, the alarm switch is still off.

FIG. 8 is an explanatory diagram when the cylinder darma is further rotated by + α in the locked state of FIG. 7; At this time, the alarm switch is turned on.

FIG. 9 is an explanatory diagram when the cylinder darma is rotated by −α in the locked state and the hour alarm switch of FIG. 8; The alarm switch remains ON even if the duplicate key is removed.

FIG. 10 is a schematic explanatory view showing the operation of the main members in FIGS. 6 to 9;

[Explanation of symbols]

X: lock, Y: signal extraction mechanism, 1: lock box, 2: front, 3: deadbolt, 4: latch, 5: thumb turn dharma, 6: center hole, 7: cylinder dharma, 8: dharma hole, 9 ... Control gear, 10: output member, 11: alarm switch, 11a: movable contact piece, 12: biasing spring, 13: locking spring, 15: engaging plate portion, 16: guide hole, 17: lever portion, 21: thumb turn Engaging teeth, 25: Cylinder engaging teeth, 25a: Projecting part, 25b: Engaging surface, 26: Engaging pin, 27: Circular fitting recess, 28: Horizontal axis, 30: Control finger part, 31 ... Engagement projection, 35 ... Alarm switch drive, 3
6 ... engagement groove.

Claims (5)

[Claims] When the thumb tunder 5 and the cylinder dharma 7 are rotated from inside and outside the room, respectively, the thumb tun dharma 5 and the cylinder dharma 7 are connected to each other in a signal extracting mechanism Y of a lock X in which dead bolts 3 protrude from the front 2 respectively. The control gear 9 which meshes with the thumb-turn engagement teeth 21 and the cylinder engagement teeth 25 formed on the dharma 5 and 7 respectively is provided on the abscissa 28 so that the control fingers 30 of the control gear 9 An output member 10 having an engaging projection 31 to be engaged is provided on the horizontal shaft 28, and an alarm switch 11 that can be brought into contact with a switch drive unit 35 of the output member 10 is provided in the lock box 1. At this time, when the cylinder darma 7 is rotated by a predetermined amount with the duplicate key, the dead bolt 3 protrudes from the front 2.
α ”, the cylinder dharma 7 rotates against the spring force of the biasing spring 12 housed in the lock box 1, and the control gear 9 rotates in conjunction with the cylinder dharma 7, and the output member 10 Is a signal extraction mechanism for a lock which is controlled by the control gear 9 to turn on the alarm switch 11. 2. The control device according to claim 1, wherein the control finger portion 30 of the control gear 9 is formed in an arc shape, while the engagement protrusion 31 of the output member 10 is formed in a claw shape. Lockout signal extraction mechanism. 3. The method according to claim 1, wherein the Samtan Dharma 5
Characterized in that the number of the thumb-turn engaging teeth 21 is smaller than the number of the cylinder engaging teeth 25 of the cylinder darma 7. 4. The lock member according to claim 1, wherein a lock spring 13 for the output member 10 is provided in the lock box, and an end 13a of the lock spring 13 that faces the output member 10 is an output member. A lock signal take-out mechanism engaged with an engagement groove formed in the lock. 5. The output spring according to claim 4, wherein the locking spring for the output member locks the output member at a predetermined position when the alarm switch is ON. Lockout signal extraction mechanism.