JPH0216434B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an anti-seismic lock, and in particular, it is reliable even when a door or door frame is distorted due to shock caused by an earthquake or the like, and a large lateral pressure is applied to the bolt of the lock device. The present invention relates to an anti-shock lock that can be unlocked at any time, thereby increasing safety.

A general locking device, as shown in FIGS. 1 to 3, has a dead bolt 1 for locking and a latch bolt 2 for temporarily locking the door to the door frame. The dead bolt 1 is operated from the outside of the door by a key (not shown) via a cylinder 3 (see FIG. 1) and a clutch (not shown), and is operated from the inside of the door by, for example, a thumb turn 4 (see FIG. 2). operated by. In addition, the latch bolt 2 has a sloped surface that contacts the door frame, and is automatically inserted into a receiving hole opened on the door frame side when the door is closed. It is also operated by a door operating member 5 (hereinafter simply referred to as a handle) such as a door operating member 5 (hereinafter simply referred to as a handle). Note that the operating mechanisms for the dead bolt 1 and latch bolt 2 are normally constructed so that these bolts can be operated independently of each other.

Furthermore, the latch bolt 2 bears the reaction force exerted on the bolt by the so-called lateral pressure when the door is closed, that is, the force that attempts to lock the door to the door frame. In other words, when both the dead bolt 1 and the latch bolt 2 are inserted into bolt receiving holes (not shown) opened in the inner edge of the door frame, the latch bolt 2 is in contact with the opening edge of the receiving hole, but the dead bolt 1 is in contact with the opening edge of the receiving hole. It is loosely fitted into the bolt receiving hole.

This is because the latch bolt 2 is operated by the handle 5, so the operating force is large, and the latch bolt 2 can be smoothly operated in the direction of retraction even when lateral pressure is high. On the other hand, if the lateral pressure is to be received by the dead bolt 1, the dead bolt is operated with a key or a small thumb turn, which may make it inoperable in some cases.

However, in the conventional lock device having the above-mentioned configuration, if the door or door frame is distorted due to an impact such as an earthquake after locking, and a large lateral pressure is applied to the latch bolt 2, the lock cannot be unlocked if the unlocking operation is incorrect. There is a fear that if a person is outside, they will be locked out, and if a person is indoors, they will be trapped and unable to escape. That is, first, the front plate 6 (third
If you retract the dead bolt 1 protruding from the latch bolt (see figure) and then operate the latch bolt 2 using the handle 5, even if the side pressure applied to the latch bolt 2 is large, the operating force from the handle 5 is large, so you can manage to close the latch bolt. You can move it, but if you hurry and turn the handle 5 first to retract the latch bolt 2, the large lateral pressure that was previously on the latch bolt 2 will now be applied to the dead bolt 1, and this will happen. The key or thumb turn 4 (FIG. 2) will no longer be able to operate the dead bolt 1, making it impossible to unlock.

In order to solve the above-mentioned inconvenience, for example,
The inventions disclosed in Japanese Utility Model Publication No. 52-110198 or Japanese Utility Model Application Publication No. 50-112593 propose a locking device in which the latch bolt cannot be retracted during locking. In such a locking device, if the bolt receiving hole on the door frame side of the lock box is opened in the correct position and the dead bolt is loosely fitted into the corresponding bolt receiving hole when the lock is locked, the bolt cannot be inserted or removed as expected. Operation is possible. However, when drilling bolt receiving holes in the door frame only, if the relative positions of the two bolt receiving holes in the expected direction deviate from the normal ones, or if a strike plate with two bolt receiving holes opened is inserted into the door frame. On the other hand, if the dead bolt is installed at a slight angle, the dead bolt may receive lateral pressure during locking, or there may not be enough room even if it is loosely fitted into the bolt receiving hole. Since the locking device is configured to operate the dead bolt independently of the latch bolt using a key or thumb turn, in such a case, deformation of the door or door frame may make it impossible to insert or remove the dead bolt. There is an inconvenience that there is.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an anti-seismic lock that can be reliably unlocked even when a large lateral pressure is applied to the latch bolt due to an impact such as an earthquake, thereby increasing safety. be.

In order to achieve the above object, one invention of the present application provides a dead bolt that is guided so as to be able to go in and out from a front plate in accordance with locking and unlocking operations, and a dead bolt that is rotatably supported in a lock box and that is arranged for engagement with a dead bolt;
A dead cam that is rotated by a key or thumb turn to control the entrance and exit of the dead bolt, a latch bolt that is guided so as to be movable almost parallel to the dead bolt and is constantly biased in the direction of protruding from the front plate; It engages with the inner end of the latch bolt from the front plate side to determine the amount of protrusion of the latch bolt from the front plate, and also moves in the direction of retracting the latch bolt in conjunction with this when the door operating member is operated. A latch bolt operating member is provided with a first engaging portion that engages with the dead cam only when the lock is locked, and is latched to the dead cam after locking, and a first engaging portion that engages with the dead cam only when the lock is locked, and a first engaging portion that engages with the dead cam only when the lock is locked, and when the latch bolt operating member moves inside the lock box. Only a second latch bolt or a second latch bolt that engages the latch bolt operating member.
A latch bolt or a latch bolt operation in which the dead bolt is unlocked by rotating the dead cam in the unlocking direction with a key or thumb turn, and moves inward of the lock box in conjunction with the door operating member. It is characterized in that the dead bolt is retracted together with the latch bolt by the member.

Further, in another invention in which the main components are the same as the first invention and the latch bolt operating member is a latch bolt slider, one end of the latch bolt is rotatably supported in a lock box on the opposite side of the dead bolt. , a connecting lever is provided whose free end engages with the latch bolt or the latch bolt slider from inside the lock box, and the second engaging portion of the dead bolt is connected to the latch bolt or the latch bolt slider via the free end of the connecting lever. It is characterized by being engaged with each other.

Embodiments of the anti-shock lock according to the present invention will be described below with reference to FIGS. 4 to 11.

In FIG. 4, reference numeral 6 indicates a front plate, and reference numeral 7 indicates a lock box, and a rod-shaped dead bolt 1 is provided substantially horizontally in the center of the lock box 7. In the illustrated embodiment, the dead bolt 1 is supported by the opening edge of a hole for taking in and taking out the dead bolt opened in the front plate 6, and by a dead bolt guide pin 8 with a flange embedded in the inner surface of the lock box 7. and is guided so that it can move in a direction perpendicular to the front plate 6. The dead bolt guide pin 8 is inserted into a long hole 9 formed along the length of the dead bolt 1.

Inside the lock box 7 above the dead bolt 1,
Detsudo cam 1 that controls the entrance and exit of detsudo bolt 1
1 is arranged. This dead cam 11 is, for example, a plate-like member integrally formed with a dead bolt operating arm 12 at one end and a chevron-shaped stop position regulating portion 13 at the other end, and has a dead cam shaft 14 with an irregular cross section.
are integrally connected to. This dead cam shaft 1
4, one end of which is connected to the cylinder 3 (first
(see the figure), and the other end is connected to a thumb turn 4 (see Figs. 2 and 3), and is supported so as to be rotatable at a fixed angle (approximately 90° in the illustrated embodiment). In addition, in order to provide a snap action characteristic to the rotation of the dead cam 11 and to maintain its stopping position accurately, a snap spring 10 is brought into contact with the side edge of the chevron-shaped position regulating portion 13 of the dead cam. is suppressing.

Corresponding to the dead cam 11, a first engaging portion 15 is formed on the side of the dead bolt 1 on the dead cam 11 side. This first engaging portion 15 is
In this embodiment, the stepped portion is formed so as to protrude so as to interfere with the rotation locus of the dead bolt operation arm 12 of the dead cam, and only when the dead cam 11 is rotated for locking, that is, when rotated clockwise in FIG. The inner end portion of the first engaging portion is deflected approximately horizontally from the base portion so as to engage with the dead bolt operating arm 12. Further, the shoulder portion of the first engaging portion 15 is bent obliquely to form a blocking surface 16.

On the other hand, a latch bolt 2 is provided below the dead bolt 1 and is substantially parallel to the dead bolt 1. Guide pin 1 that also serves as
8 and is longitudinally movably guided. In addition, a compression coil spring 20, for example, is elastically loaded between the flange portion 19 formed at the inner end of the latch bolt and the back plate of the lock box 7, and the elasticity of this spring 20 causes the latch bolt 2 to constantly close to the front plate. It is biased in the direction of protruding from 6.

On the other hand, a handle cam 17 is disposed within the lock box 7 below the latch bolt. In the illustrated embodiment, the handle cam 17 has a bolt operating arm 21 as a latch bolt operating member at one end.
It is a plate-like body with a magatama-shaped overall shape, and is integrally connected to the handle cam shaft 22 having an irregular cross section.

The handle cam shaft 22 is connected to handles 5, 5 on the inner and outer surfaces of the door via a rotation support (not shown), and is rotated counterclockwise in FIG. 4 by the elasticity of a spring (not shown). energized to move. Therefore, the handle cam 17 is also the fourth one.
In the figure, it is biased to rotate counterclockwise, but
This rotation is prevented by the guide pin 18 of the latch bolt, and the stop position of the handle cam 17 in the free state is uniquely defined by the guide pin 18.

Note that the flange portion 19 of the latch bolt is
The latch bolt 2 is engaged with the side surface of the bolt operating arm 21 of the handle cam opposite to the guide pin 18, so that the latch bolt 2 is latched to the guide pin 18 via the bolt operating arm 21 and is in a free state. The protruding position from the front plate 6 is defined, but it is designed to be able to move freely in the direction of retracting into the lock box.

According to the present invention, the second engaging portion 23 is formed at the inner end of the side of the dead bolt 1 on the handle cam 17 side. This second engaging portion 23
In the illustrated embodiment, is formed as a step that protrudes to interfere with the rotation locus of the tip of the bolt operating arm 21, and prevents the handle cam 17 from rotating in the direction of retracting the latch bolt 2, that is, the first step. In Figure 4, the bolt operating arm 21 only rotates clockwise.
The outer end portion of the second engaging portion 23 is curved approximately horizontally from the base portion so as to engage with the tip portion of the second engaging portion 23 . In addition, the position of the second engaging portion 23 in the length direction of the dead bolt is as shown in FIG. 4 showing the unlocked state.
When the bolt is rotated clockwise, it should be set so that it lightly contacts the tip of the bolt operating arm 21 or maintains a slight gap.

Note that in FIG.
The right side in the figure is attached to one pin implanted in the inner end of the dead bolt 1, and the other end (left side in Figure 4, right side in Figure 5) is the other pin implanted in the inner surface of the lock box 7. Each of them is rotatably wrapped around it. The position of the other pin on the lock box side is approximately at the center of the locus of movement of one pin as the dead bolt 1 moves.
In addition, it shall be set at a location slightly apart from the above-mentioned movement trajectory.

Next, the operation of the anti-vibration lock according to an embodiment of the present invention configured as described above will be explained.

FIG. 4 shows the unlocked state of the anti-shock lock, at which time the dead cam 11 moves the dead bolt operating arm 12 to the lock box 7.
This rotational position is secured by the elasticity of the snap spring. In addition, the dead bolt 1 also has the above-mentioned opening leg spring 2.
It is biased in the direction of retraction into the lock box by the elasticity of 4. Then, the tip of the bolt operating arm 21 of the handle cam and the second engaging portion 2 of the dead bolt are connected.
3 are spaced apart from each other, and by turning the handle 5, the latch bolt 2 can be operated independently of the dead bolt 1, similar to a conventional locking device.

When locking, the dead cam 11 is rotated clockwise in FIG. 4 using the key or thumb turn 4 (FIGS. 2 and 3). Then, the dead bolt operating arm 12 engages the first engaging portion 15 of the dead bolt.
, and pushes the dead bolt 1 in the projecting direction, that is, to the left, against the elasticity of the leg opening spring 24. When the dead bolt 1 moves more than halfway through its extension stroke, in addition to the pushing of the dead bolt operating arm 12,
The elasticity of the inverted leg spring 24 acts in the direction of protruding the dead bolt 1, as shown in FIG.
To smoothly and completely eject the dead bolt.

In the locked state shown in FIG. 5, the dead bolt 1 is urged in the protruding direction by the elasticity of the split leg spring 24, and the tip of the dead bolt operating arm 12 rides on the blocking surface 16 of the first engaging portion. In addition, the second engaging portion 23 of the dead bolt comes to be very close to or lightly abut the tip of the bolt operating arm 21.

At this time, even if you try to pull in the latch bolt 2 by turning the handle 5, the tip of the bolt operating arm 21 of the handle cam is engaged with the second engaging part 23 and the rotation is blocked, so the latch bolt Let alone operating the handle 5, the handle 5 does not move. Therefore, a situation in which the latch bolt is retracted first in a hurry during an earthquake or the like is prevented.

When unlocking, as shown in FIG. 6, the dead cam 11 is rotated counterclockwise by, for example, 90 degrees using the key or thumb turn 4. When the dead cam is rotated, the dead bolt operating arm 12 rotates independently without interfering with the dead bolt 1, so that even if the dead cam 11 is rotated to the unlocked position, the dead bolt 1 remains protruded.

Next, as shown in FIG. 7, by rotating the handle 5 clockwise (when operating from outside),
The handle cam 17 integrated with the handle 5 also rotates clockwise, and the second engaging portion 23 of the dead bolt, which is engaged with both inner edges of the bolt operating arm 21, and the flange at the inner end of the latch bolt 2 are rotated clockwise. Push section 19 to the right and retract dead bolt 1 and latch bolt 2 at the same time. At this time, even if the door or door frame is distorted due to an impact such as an earthquake and a large lateral pressure is applied to the latch bolt 2, the operating force from the handle 5 is large enough to retract the latch bolt 2 together with the dead bolt 1, which is not subject to lateral pressure. It is possible to unlock the lock at the same time. Note that due to the difference in the engagement position of the bolt operation arm 21, the moving distance of the dead bolt 1 and the latch bolt 2 due to the rotation of the handle cam 17 is different, and in the illustrated embodiment, the moving distance of the dead bolt 1 is longer;
The protrusion length of the dead bolt 1 during the locking operation (see FIG. 5) is set to be longer than that of the latch bolt 2 so that the outer ends of the dead bolt 1 and the latch bolt 2 are approximately aligned with the outer surface of the front plate 6 during the unlocking operation shown in FIG. Of course, it should be designed to be large.

When you release your hand from the handle 5 after unlocking, the handle cam 17 automatically rotates until it comes into contact with the guide pin 18 due to the elasticity of the spring (not shown) that urges the handle cam 17 to rotate in the direction of the guide pin 18. It rotates and returns to the state shown in FIG.

FIG. 8 shows another embodiment of the present invention, in which the latch bolt 2 can be operated by rotating a door operating member such as a handle or knob clockwise or counterclockwise. The present invention is applied to a type of lock device. That is, in the same figure, reference numeral 25 indicates a latch bolt slider as a latch bolt operating member, and this latch bolt slider 25 is, for example, a plate-shaped body whose overall shape is approximately U-shaped. The latch bolt support piece 26 is formed at the outer end, and a pair of handle cam engaging pieces 27 are formed at the inner end.

The inner end of the latch bolt 2 slidably passes through the center of the latch bolt support piece 26,
Further, a compression coil spring 20 is attached to the shaft portion between the latch bolt support piece 26 and the head of the latch bolt.
is wrapped around the latch bolt 2 to urge the latch bolt 2 in the direction of protruding from the front plate 6. However, since the flange portion 19 formed at the inner end of the latch bolt 2 is locked to the latch bolt support piece 26, The amount of protrusion of the latch bolt 2 from the front plate is set to a specified value. With the above configuration, the latch bolt 2 can be moved in and out of the front plate 6 independently of the latch bolt slider 25.

On the other hand, a handle cam 17 having a shape in which a large-diameter semicircular plate and a small-diameter semicircular plate are coaxially coupled, for example, is integrally connected to the handle cam shaft 22 connected to the door operating member. Each of the pair of stepped portions of the handle cam 17 engages with each of the handle cam engaging pieces 27, 27 of the latch bolt slider from the front plate 6 side.

On the other hand, a second engaging portion 23 is provided protruding from the side of the dead bolt 1 on the latch bolt side.
The engaging portion 23 engages with the inner surface of the latch bolt support piece 26 so as to lightly abut it in the locked state shown in FIG. In FIG. 8, the reference numeral 28 indicates a guide pin of the latch bolt slider 25, and in this figure, the same reference numerals as in FIGS. 4 to 7 indicate parts equivalent to those in these figures.

In the anti-vibration lock according to another embodiment of the present invention configured as described above, the dead bolt 1 is unlocked by rotating the dead cam 11 counterclockwise using a key or a thumb turn, and the door operating member (not shown) When the handle cam 17 is rotated clockwise or counterclockwise through the handle cam 17, the stepped portion resists the elasticity of the compression coil springs 20 and moves the latch bolt slider 25 toward the inside of the lock box (see FIG. 8). 4 to 7, it is possible to simultaneously retract both the latch bolt 2 and the dead bolt 1 engaged with the latch bolt slider 25. . Similarly, in the locked state, the handle cam 17 and the door operating member are also locked and do not move. However, in this embodiment, as is clear from FIG. 8, the amount of protrusion of the dead bolt 1 and the latch bolt 2 from the front plate 6 is the same.

In the embodiment shown in FIG. 8, the upper end of the latch bolt support piece 26, which is a part of the latch bolt slider, is engaged with the second engaging portion 23 from the front plate 6 side. When moving inward, the latch bolt 2 also moves together, so the latch bolt support piece 2
6, it goes without saying that the inner end of the latch bolt 2 may be engaged with the second engaging portion 23. At this time, the second engaging portion 23 is slightly shifted inward (to the right) and extended downward, so that it engages with the inner end surface (the right end surface in FIG. 8) of the flange 19 formed at the inner end of the latch bolt 2. (not shown).

FIG. 9 shows yet another embodiment of the present invention, in which the present invention is applied to a so-called integral lock in which the cylinder 3 (FIG. 1) and the knob are coaxial.

As shown in FIG. 9, the integral lock has two features: the handle cam 17 is coaxially fitted to the outside of the dead cam 11, and a latch bar (not shown) integrated with the knob is inserted into the handle cam 17. No. 8 except that the latch bar receiving hole 29 is open.
Since it is almost the same as that shown in the figure, a detailed explanation of its configuration will be omitted.

In the embodiment shown in FIG. 9, the second engaging portion 23 of the dead bolt engages with a push pin 31 implanted in a latch bolt slider 25 as a latch bolt operating member.

In Fig. 9, reference numeral 32 indicates a guide block which has an inverted L-shape in cross section and slides into contact with the side edge of the latch bolt slider 25 and restricts its movement in the thickness direction, and reference numeral 33 indicates a bolt that brings the knob seat to the door surface. In addition, in the figure, the same reference numerals as in FIG. 8 indicate the same parts as in FIG. 8.

Since the operation and effect of the device shown in FIG. 9 is the same as that shown in FIG. 8, detailed explanation thereof will be omitted.

10 and 11 show anti-shock locks according to embodiments of other inventions related to the one invention described above, and the one shown in FIG. 10 is the one shown in FIG. 8,
The one shown in FIG. 11 has the same main components as the one shown in FIG. rather than directly engaging the latch bolt 2
The latch bolt 2 or the latch bolt slider 25 is engaged with the latch bolt 2 or the latch bolt slider 25 via the free end of the connecting lever 34, one end of which is rotatably supported in the lock box on the opposite side of the dead bolt 1.

That is, in the one shown in FIG. 10, the latch bolt slider 25 has a groove that slides on its side edge, and the lock box 7 is moved by guide blocks 35, 35 fixed to the side plates of the lock box 7. The latch bolt slider 25 is guided in a slightly floating state from the side plate of the lock box 7.
An elongated connecting lever 34 whose one end (lower end in FIG. 10) is rotatably supported by the side plate of the lock box 7 and extends substantially upward is disposed in the lock box. The second engaging portion 23 of the dead bolt engages with the latch bolt slider 25 via a connecting lever 34 with its free end engaged and a push pin 31 protruding from the back surface of the latch bolt slider 25. It matches.

In addition, the second engaging portion 23 of the dead bolt in FIG. is engaged with the latch bolt 2 itself via a push pin 31 .

In the anti-shock lock shown in FIGS. 10 and 11, when the handle cam 17 is rotated via a door operating member such as a knob, the latch bolt slider 25 moves, and this movement is transmitted via the connecting lever 34 to the dead bolt. The operation of retracting the latch bolt 2 and the dead bolt 1 at the same time is transmitted to the
The second engagement portion 2 of the dead bolt on the coupling lever 34 is similar to that shown in FIGS.
Due to the difference between the engagement position of 3 and the engagement position of the push pin 31 related to the movement of the latch bolt, the amount of protrusion of the dead bolt 1 from the front plate 6 during locking can be controlled by the latch bolt 2 in the same way as in a normal locking device. It has the advantage that it can be made larger than that of 2 to ensure secure locking.

As is clear from the above description, the first invention according to the present application is such that the engagement between the dead cam and the dead bolt is performed only when the former is rotated in the locking direction, and in a normal locking device, only the latch bolt is operated. Since the dead bolt is retracted into the lockbox along with the latch bolt by the latch bolt or the latch bolt operating member via the door operating member that is attached to the door, the latch bolt, which has been subjected to large lateral pressure due to shocks such as earthquakes, is operated first. It is possible to completely prevent a situation in which the dead bolt cannot be operated from now on.

Another invention according to the present application is that the second engaging portion of the dead bolt is connected to the latch bolt or the latch via the free end portion of the connecting lever, one end of which is rotatably supported on the side plate of the lock box on the side opposite to the dead bolt with respect to the latch bolt. Since it engages with the bolt slider, the amount of protrusion of the dead bolt from the front plate during locking can be made larger than the amount of protrusion of the latch bolt from the front plate, as in a normal locking device, to ensure locking. The first application related to the present application
According to the present invention, it is possible to eliminate the slight inconvenience that occurs when the latch bolt operating member is a latch bolt slider, in that the amount of protrusion of the dead bolt from the front plate during locking cannot be made larger than that of the latch bolt.

Furthermore, the above-mentioned functions of the anti-shock locks according to the first invention and the other inventions of the present application are not necessarily effective only during earthquakes that may occur at any time; for example, rubber padding strips are attached to the doorstop of the door frame. death,
Latch bolts are used in cases such as airtight doors that keep the interior airtight by pressing the seal strips around the front of the door so that they elastically deform, or doors that have warped due to aging or have deformed hinges. It is also effective and necessary when the lateral pressure applied to the

Furthermore, when the door is locked, the door operating member is fixed and does not move, so if you touch the door operating member and turn it for a moment, you can immediately tell whether it is locked or not.
Therefore, various effects such as easy confirmation of locking are achieved.

Furthermore, when the door is locked, a malicious third party may attempt to unlock it by violently manipulating the door operating member, but this could be caused by, for example, a shear ring, where stress is concentrated on the handle camshaft connected to the door operating member. This can be effectively prevented by providing a shearing point so that the shearing point can be screwed off when strong torque is applied to the handle camshaft, or by increasing the strength of the internal mechanism of the lock box.

In addition, in the illustrated embodiments, except for the one shown in Figure 11, the second engaging portion of the dead bolt is adapted to engage with a latch bolt operating member such as a handle cam or a latch bolt slider. Of course, either can be designed to engage a latch bolt.

[Brief explanation of drawings]

Fig. 1 is a front view of the lock operation part of the door, Fig. 2 is a rear view thereof, Fig. 3 is a side view thereof, and Figs. 4 to 7 are earthquake countermeasures according to an embodiment of the invention according to the present application. These are diagrams showing the structure of the lock. Figure 4 shows the lock when unlocked, Figure 5 shows the lock when the lock is locked, Figure 6 shows the lock when the lock cam is operated to unlock the lock, and Figure 7 shows the lock when the lock is unlocked. 8 and 9 are diagrams showing other embodiments of the above-mentioned first invention, and FIGS. 10 and 11 are diagrams showing the structure of an anti-shock lock according to another invention according to the present application. be. 1...Dead bolt, 2...Latch bolt, 3
... Cylinder, 4 ... Thumb turn, 5 ... Handle, 6 ... Front plate, 7 ... Lock box, 11 ... Dead cam, 12 ... Dead bolt operating arm, 14 ...
...Dead cam shaft, 15...First engaging portion, 16...
Stopping surface, 17... Handle cam, 19... Flange portion, 21... Bolt operating arm, 22... Handle cam shaft, 23... Second engaging portion, 25... Latch bolt slider, 26... Latch bolt Support piece, 27... Handle cam engagement piece, 31... Push pin, 34... Connection lever.

Claims (1)

[Scope of Claims] 1. A dead bolt guided so that it can be moved in and out from the front plate according to locking and unlocking operations;
a dead cam rotatably supported within the lock box and disposed so as to be able to engage with the dead bolt; a dead cam that is rotated by a key or thumb turn to control the entrance and exit of the dead bolt; and a dead cam that moves substantially parallel to the dead bolt. A latch bolt that is guided so that it can be guided and is always biased in the direction of protruding from the front plate, and the inner end of the biased latch bolt is engaged from the front plate side to define the amount of protrusion of the latch bolt from the front plate. and a latch bolt operating member that moves in the direction of retracting the latch bolt in conjunction with the door operating member when the door operating member is operated, wherein the dead bolt engages with the dead cam only when the door is locked; A first engaging portion to be locked and a second engaging portion to be engaged with the latch bolt or the latch bolt operating member only when the latch bolt operating member moves inward of the lock box are respectively formed, and the dead cam can be moved by a key or thumb turn. The dead bolt is unlocked by turning in the unlocking direction, and the dead bolt is retracted together with the latch bolt by the latch bolt or the latch bolt operating member that moves inward of the lock box in conjunction with the door operating member. An anti-shock tablet characterized by: 2. A dead bolt that is guided so that it can be accessed from the front plate according to locking and unlocking operations,
a dead cam rotatably supported within the lock box and disposed so as to be able to engage with the dead bolt; a dead cam that is rotated by a key or thumb turn to control the entrance and exit of the dead bolt; and a dead cam that moves substantially parallel to the dead bolt. The latch bolt is guided so that it can be guided and is always biased in the direction of protruding from the front plate, and the inner end of the biased latch bolt is engaged from the front plate side to define the amount of protrusion of the latch bolt from the front plate. and a latch bolt slider that moves in the direction of retracting the latch bolt in conjunction with the operation of the door operating member, one end of which is rotated into the lock box on the opposite side of the latch bolt from the dead bolt. A connecting lever is provided which is freely supported and whose free end is engaged with the latch bolt or latch bolt slider from inside the lock box, and the dead bolt is engaged with the dead cam only when the lock is locked, and is locked with the dead cam after locking. a second engaging portion that engages the latch bolt or the latch bolt slider via the free end of the coupling lever only when the latch bolt slider moves inward of the lock box; When the dead bolt is rotated in the unlocking direction using a key or thumb turn, the dead bolt is unlocked, and the latch bolt or the latch bolt operating member that is linked with the door operating member is moved inward of the lock box by the connecting lever. Replace it with the rotation of
An anti-shock lock characterized in that the free end of the connecting lever allows the dead bolt to be retracted together with the latch bolt.