JPH0726822A - Lock - Google Patents

Abstract

PURPOSE:To position an interlocking section of a precaution lever in a fittable hole when a door is in a closing state because the interlocking section of the precaution lever is interlocked with an interlocking hole of a receiving hole in the case the door is in a closing state, to release the interlock of the interlocking section with the receiving hole, to prevent a precautions state from dishonest unlocking and to make it possible to provide a safety lock. CONSTITUTION:In a lock having precaution lever 8 provided with an interlocking section 9 on one end thereof, and in a door closing state, a transferring member 20 is operated by operation in a locking direction of an operating member 10 formed of a cylinder 11 or a thumb turn 15 to lock. According to the constitution, the interlocking section 9 of the precaution lever 8 is projected and fitted to a fittable hole 3a of a receiving hole 3 and, at the same time, the interlocking section 9 is moved to the inside of an interlocking hole 3b from the fittable hole 3a to be interlocked and hold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concentric lock for restricting an opening amount of a door (door) as necessary to prevent an intruder from invading an intruder, and more specifically, when the door is closed. When the operating member is locked in the locking direction, the locking portion of the caution lock is projected into and fitted into the fitting / removing hole of the receiving hole, and is engaged and retained in the engaging hole to close the door after the locking operation. The present invention relates to a locking lock in which the locking lever is locked in the engaging hole at the stage to prevent the locking of the locking lever from being inadvertently unlocked.

[0002]

2. Description of the Related Art As a precautionary lock of this type, (a) the other end of a precautionary rod having a locking portion at one end, as in Japanese Utility Model Laid-Open No. 2-95774 filed by the applicant of the present application, has a lock case. The receiving hole of the receiving member, which is rotatably pivotally supported by the cam on the opposite side of the guard rod, is connected to the fitting hole through which the engaging portion of the guard rod can be fitted and removed. It is known that the engaging portion is formed with an engaging hole.

(B) As a safety lock attached to a sliding door, the utility model 57-825556 filed by the applicant of the present application.
The one described in Japanese Patent Publication is known. According to the guide lock described in this publication, the fixed end side of the guide rod having a locking portion on the free end side is swingably attached to the frame side, and the door is fitted with the locking portion of the guide rod. A case having a hole and an engaging hole into which the engaging portion engages is attached, and a locking member having an engaging hole into which the engaging portion of the precautionary rod engages is installed in the case. In addition to being movably provided, the locking member is rotated by a sliding member to control engagement or disengagement of the watch ring with respect to the case.

[0004]

However, in (1) above (a) and (b), the locking portion of the precautionary rod is located in the fitting hole of the receiving hole when the door is closed. When the door is opened, it moves to the engagement hole of the receiving hole and engages to make a caution. Therefore, after the door is closed, the locking portion of the caution rod is set to the engagement hole. There is a risk that the locking portion may be located in the fitting / removing hole to release the engagement with the receiving hole, and the caution state may be unlocked.

For example, in the above (b), in the case of caution, when the trigger is pushed from the outside of the door (door) to hold the sliding member in a raised state with tape or the like and the door is closed, The locking portion of the rod can be disengaged from the locking hole of the locking member and the fitting / removing hole of the case, and the caution state can be unlocked illegally.

(2) Further, since the structure of (b) has no cylinder lock attached thereto, there is a disadvantage that it cannot be locked or unlocked with caution by the key. It was

(3) Further, although the guard rod of (b) rotates in the same direction (straight line direction) as the opening / closing direction of the sliding door, the fixed end side of the guard rod is pivotally attached to the frame side and the free end is Since the side is to be engaged with and disengaged from the case and the locking member provided on the front side of the door tip, the pivoting portion on the fixed end side of the above-mentioned rod and the case on the free end side protrude from the front of the frame or door. There was an unsightly defect in appearance. In addition to the above, many components such as the case, the locking member and the sliding member are required as described above, and the operation is troublesome.

The present invention is intended to solve the drawbacks of the conventional example.

[0009]

In order to achieve the above object, the present invention rotatably pivots the other end of a guard rod having a locking portion at one end thereof to a lock case so that the guard rod faces each other. The receiving hole of the receiving member is formed by a fitting / removing hole into which the locking portion of the guard rod can be freely inserted / removed, and an engaging hole communicating with the fitting / removing hole and engaging with the locking portion. When the door lock is closed, the locking member of the precaution ring is projected into the receiving hole of the receiving hole by operating the transmission member by operating the cylinder or thumb turn operation member in the locking direction to lock the transmission member. It is characterized in that the engaging portion is configured to move from the fitting / removing hole into the engaging hole and to be engaged and held.

The other end of the guard rod and one end of the rack plate or the cam are pivotally or slidably supported by an axis in a lock case attached to the front end side of the sliding door type door.
The guard rod operates the transmission member by the operation of the operation member so as to be rotatable in the same direction as the opening / closing direction of the door.

At least one of the transmission member, the vigilance rod, and the lock case is preferably provided with a lock mechanism that prevents the vigilance rod from being unlocked by an operating member such as a cylinder or a thumb turn in the vigilance state. .

Although various specific configurations of the transmission member and the lock mechanism can be adopted, for example, the configurations described below can also be adopted.

The transmission member includes a slider that is moved by operating the operating member, a rack that is moved in the opposite direction to the movement of the slider, and a pinion that is meshed with the slider and the teeth of the rack. As a guard rod, one end of the lock case and one end of the rack are coaxially pivotally supported in the lock case; as a locking mechanism, an engagement receiving portion formed at one end side of the slider and a guard The lock piece may include an engagement portion that engages with the engagement receiving portion when in a state.

A hub-shaped cylinder cam actuated by a key or thumb turn is used as the operating member; and a cam pivotally supported in the lock case and rotated by the cylinder cam is used as the transmitting member. And one end of the cam and one end of the guard rod are coaxially supported by a shaft movable in a guide hole formed in the lock case; the lock mechanism is an engagement receiver provided on one end side of the cam. It may be configured such that the engagement receiving portion and the engagement portion are engaged with each other in a cautionary state by using the portion and the engagement portion formed on one end side of the precautionary rod.

A hub actuated by a key or thumb turn is used as the operating member; a cam pivotally supported in the lock case and pivoted by the hub is used as the transmitting member, and the hub of the cam is used. One end and one end of the guard rod are coaxially supported by a shaft that is movable in a guide hole formed in the lock case; as a locking mechanism, the guide hole is formed into a ball-shaped shape and its both ends are With the engagement receiving part,
The shaft is formed in an angular shaft shape so that it cannot move at both ends of the guide hole, and the shaft is configured to engage with the engagement receiving portion at the end of the guide hole in the state of caution. But it's okay.

As described above, in the present invention, when the door is closed, the operating member is operated in the locking direction so that the locking portion of the guard rod is projected into the fitting hole of the receiving hole and is raised. Since the engagement hole is engaged with the fitting hole of the receiving hole, the locked state of the watch ring cannot be released from the outside. Also, when the door is half opened and the watch ring is locked, even if you try to operate the thumb turn by inserting your hand inside the room, the lock mechanism is working so that it cannot be unlocked. An unauthorized user cannot change from the caution state to the unlocked state. This guard lock is not limited to a sliding door that opens and closes in a linear direction, but also in an opening door that rotates in an arc, by attaching the guard rod to the opposing portion of the door and the door stop of the frame, the guard rod is in the same direction as the door opening and closing direction. It is possible to lock and unlock the vigilance rod by rotating it to the right and operating the cylinder or thumb turn.

[0017]

[First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. In FIG. 1 and FIG. 9, a is a sliding door as a door, and b is a frame or another door. A substantially L-shaped guard rod 8 is projected and retracted from the front surface of a lock case 1 (upper lock case 1a) including an upper lock case 1a and a lower lock case 1b on the door end side of the sliding door a. On the other hand, a receiving member 2 having a receiving hole 3 into which the locking portion 9 of the guard rod 8 is projected and engaged is provided on the frame B side. The receiving member 2 is fixed to the frame B with a screw 5 via a box receiver 4. The receiving hole 3 may have any suitable shape such as a linear shape, an L shape, and a curved shape, but in this embodiment, as shown in FIG. 3, the locking portion 9 of the guard rod 8 is fitted in the lower portion of the elongated hole. A large-diameter fitting / removing hole 3a is formed so that it can be detached, and a small-diameter engaging hole 3b is formed in the upper portion so that the locking portion 9 is engaged and prevented from coming off. When the cam 13 is completely rotated in the locking direction through the operating member 10 including the cylinder 11 or thumb turn 15 in the closed state, the transmission member 20 is actuated to receive the locking portion 9 of the guard rod 8 in the receiving hole 3 Fitting hole 3a
The fitting hole 3a is fitted into the fitting hole 3a and the fitting hole 3a is engaged therewith.
It moves to the lower position of b and is engaged and held (see FIG. 7). Then, the locking portion 9 moves to the upper position of the engagement hole 3b in response to the opening of the door b to allow the door b to be released within a certain range (see FIG. 8).

The front surface of the lock case 1 (upper lock case 1a) is opened so that the guard rod 8 can be retracted. In addition, the front of the lock case 1 (upper lock case 1a) is shown in FIG.
As shown in, the front plate 6 is composed of a large diameter portion 6a into which the locking portion 9 of the guard rod 8 can be inserted and a small diameter portion 6b having a long hole shape so that the locking portion 9 does not come off. , It is fixed to the door (sliding door) with screws 7.

In the lock case 1, a transmission member 20 that is actuated by operating an operating member 10 such as a cylinder 11 and a thumb turn 15, and an engaging portion 9 of a guard rod 8 by the actuation of the transmission member 20 of the receiving member 2. is Hamada' the receiving hole 3, and a precaution rod 8 described above which is rotated in the same direction as the opening direction of the gutter, the engaging holes 3b of the receiving hole 3 the engagement portion 9 of the receiving member 2 precaution rods 8 When the door is opened by keeping the door open, that is, the state of caution is maintained, the engaging portion 53 of the lock piece 52 described later engages with the engaging portion 51 of the upper slider 21a as shown in FIG. A lock mechanism 50 that prevents upward movement of the slider 21 and prevents the guard ring 8 from being unlocked even by the operating member 10.
And are provided. In other words, even if the user tries to rotate the thumb turn 15 by inserting his / her hand through the opening of the door in the cautionary state, the locking mechanism 50 is still in operation and the precautionary rod 8 cannot be unlocked.

The transmission member 20 includes a slider 21 which is moved by an operation of the operation member 10 (inserting the key 12 into the cylinder 11 to operate the cam 13 or moving the thumb turn 15 up and down), and movement of the slider 21. On the other hand, the rack plate 22 which is moved in the opposite direction and the slider 21
And a pinion 25 that is interposed and meshed between the teeth 23 and 24 of the rack plate 22.

The slider 21 includes an upper slider 21a and a lower slider 2 as shown in FIGS.
1b, and sliders 21a on both upper and lower parts,
21b is connected by a shaft 30 inside the thumb turn 15. The lower part of the upper slider 21a faces the lower lock case 1b, but all the other parts face the upper lock case 1a. Guide holes 3 guided by shafts 31 and 32 are provided at both upper and lower portions of the upper slider 21a.
3, 34 are formed, and the slider 21 can be moved up and down by the stroke of the guide holes 33, 34. Further, the upper slider 21 is formed with bent portions 35 and 36 on both left and right sides in FIG.

As shown in FIGS. 1 and 4, the rack plate 22 has a shaft 37 at one end of the rack plate 22 and one end of the guard rod 8.
The shaft 37 can be vertically moved in guide holes 38 formed in the lock case 1 (upper lock case 1a). Further, the shaft 37 is provided with a spring 3 that constantly urges the free end side of the guard rod 8, that is, the locking portion 9 in the protruding direction.
9 is attached, and one end of the spring 39 is locked to the upper end of the guard rod 8 and the other end is locked to the bent portion 22a formed on the rack plate 22 so that the guard rod 8 is always rotated clockwise in FIG. I am biased. A second guide hole 40 having the same stroke length as the guide hole 38 of the lock case 1 is formed at the other end of the rack plate 22, and the lock case 1 is provided in the second guide hole 40.
The pin 41 fixed to the (upper lock case 1a) is inserted,
The rack plate 22 serves as a guide portion so that the rack plate 22 can move up and down by a required stroke length.

The teeth 23 of the slider 21 and the rack plate 2
Between the two teeth 24, the lock case 1 (upper lock case 1
A pinion 25 pivotally supported in a) is engaged with the rack plate 22, and when the slider 21 is moved upward, the rack plate 22 is moved downward via the pinion 25, and when the slider 21 is moved downward, the rack plate 22 is moved upward. Thus, both 21 and 22 have a reversible movement.

As the lock mechanism 50, the slider 21
And a lock piece 52 having an engaging portion 53 that engages with the engaging portion 51 when the door is opened in the precautionary state of FIG. It consists of That is, the lock piece 52 is
It is always urged locking direction (counterclockwise direction in FIG. 1, 8) by the lock casing 1 is pivotally supported Te in (upper lock casing 1a) in the axial 54 and lock piece spring 55 attached to the shaft 54. Further, in this lock piece 52, when the door (sliding door) a is not opened in the unlocked state (FIG. 1) and in the locked state (FIG. 7), the engaging portion 53a of the upper arm portion of the watch ring 8 is provided. The lower side wall 56 by the lock piece spring 55 comes into contact with the bent portion 8c so that the slider 21 (the upper slider 21
The slider is not located on the moving path of the locking portion 51 of a) and is in a state of being able to move upward. Next, when the door (sliding door) a is opened even in the locked state, the guard ring 8 tilts and the engagement with the bent portion 8c with respect to the engaging portion 53a is released, so that the lock piece 52 rotates. Since the engaging portion 53 of the lock piece 52 and the engaging portion 51 of the upper slider 21a are engaged with each other and the operation member 10 cannot be operated, the operator inserts his / her hand through the opened gap and turns the thumb turn. Even if I try to unlock it illegally, I cannot do it.

The operation of the above embodiment will be described below with reference to FIGS. 1 and 5 to 8. FIG. 1 shows an unlocked state in which the operating member 10 is not actuated and the guard rod 8 is not engaged with the receiving hole 3 of the receiving member 2 in a closed door bear. In this case, the slider 21 is moved up to the maximum, while the rack plate 22 is at the lowest position due to the action of the pinion 25, and the upper hook-shaped engaging portion 8 of the guard rod 8 is moved.
a engages with the engagement receiving portion 42 at the upper end of the bent portion 35 of the slider 21 (21a), so that the spring 39 prevents the guard rod 8 from projecting.

In the state of FIG. 1, the operating member 10, that is, the cylinder 11 or the thumb turn 15 is slightly actuated, and the slider 21 is moved by the engaging portion 14 a of the cam 13.
Push down the lower end bent portion 26 of (21b) to move the slider 2
When the whole 1 is moved down a little as shown in FIG. 6, the engagement receiving portion 42 of the bent portion 35 also moves down a little, and the guard rod 8 is rotated in the projecting direction by the urging force of the spring 39. Project into the receiving hole 3 of the receiving member 2. That is, the locking portion 9 of the guard ring 8 is projected and fitted into the fitting / removing hole 3 a of the receiving hole 3. At this time, the rack 22 is slightly moved up by the action of the pinion 25 (FIG. 6).

From the state of FIG. 6, the cylinder 11
Alternatively, when the operating member 10 including the thumb turn 15 is further moved to the maximum position and the slider 21 is moved down to the maximum downward position as shown in FIG. 7, the rack plate 22 is moved to the pinion 25.
Is moved up to the maximum moving position, and the guard rod 8 rotatably integrally held on the rack plate 22 by the shaft 37 also moves up. At this time, the locking portion 9 of the guard rod 8 is engaged with the engaging hole 3b from the fitting / removing hole 3a of the receiving hole 3 of the receiving member 2 (FIG. 7). At this time, the engaging portion 8a of the guard rod 8 and the bent portion 35 of the upper slider 21a are disengaged, and there is nothing that prevents the guard rod 8 from rotating in the counterclockwise direction. It contacts the bottom plate of the receiving member 2 and is prevented from rotating further.

When the door (sliding door) a is opened in the state of FIG. 7,
The locking portion 9 of the guard rod 8 moves upward in the engagement hole 3b as shown by the chain line in FIG. 3 to reach the maximum restriction open state as shown in FIG. At this time, the engagement portion 53 of the lock piece 52 is rotated counterclockwise by the urging force of the lock piece spring 55, and the engagement portion 53 is moved by the slider 21 (the upper slider 21).
Since it is engaged with the locking portion 51 of a), the slider 21 is prevented from moving upward. That is, in the state shown in FIG. 8, even if the user tries to operate the thumb turn 15 or the like by inserting his / her hand from the outside, the lock mechanism 5 including the engaging portion 53 and the engaging portion 51.
When 0, the slider 21 cannot move downward, so that the thumb turn 15 cannot be operated, and it is possible to provide a caution pad having an excellent crime prevention function that can prevent unauthorized unlocking.

In order to change the state from the state shown in FIG. 8 to the unlocked state, the door (sliding door) is closed to obtain the state shown in FIG. 7, the cylinder 11 or thumb turn 15 which is the operating member 10 is operated, and the slider 21 is moved up. When it moves, it becomes the unlocked bear of Fig. 1. In addition,
In FIGS. 1 and 5 to 8, 43 is a click spring.

[0030]

[Second Embodiment] A second embodiment of the present invention will be described with reference to FIGS.
It will be described below based on. 10 to 13,
Reference numeral 16 is a hub corresponding to the cam 13 in FIG. 1, which is operated by an operation member 10 such as a key 12 or thumb turn (not shown), and 27 is rotatably supported in the lock case 1 and is operated by the hub 16. A cam which is a rotating transmission member 20, and one end of the cam 27 and one end of the guard rod 8 are movable in a guide hole 38 formed in the lock case 1.
It is coaxially supported. The cam 27 has an escape hole 27a for inserting the shaft 44 at one end side thereof, and engagement receiving portions 27b, 27C for engaging the engagement portion 16a of the hub 16 at the other end side thereof. Is formed. This cam 2
7 is a spring 4 wound around a shaft 45 pivotally supported by the lock case 1.
6 always urges clockwise. Spring 46
Is hung between the protruding portion 59 of the guard rod 8 and the cam 27, and urges the guard rod 8 clockwise with the shaft 44 as a fulcrum and the cam 27 clockwise with the shaft 45 as a fulcrum.

An engaging receiving portion 57 is provided on one end of the cam 27 so as to project by bending, and the guard rod 8 is provided.
The engaging portion 58 is provided on one end side of the door, and the engaging receiving portion 57 and the engaging portion 58 are shown in FIGS.
If the door 27 is not engaged as shown in FIG. 2 and is engaged in the precautionary state in which the door is opened within the regulation range as shown in FIG. 13, the cam 27 cannot be rotated even if the hand is inserted through the gap of the door and the thumb turn is turned. As a result, the hub 16 cannot rotate and cannot be unlocked illegally. The engagement receiving portion 57 and the engagement portion 58 form a lock mechanism 50. The structure of the receiving member 2 other than the structure on the one end side of the cam 27, the hub 16 and the guard rod 8 described above is formed in the same manner as that shown in the first embodiment. The lock case 1 of this embodiment does not require the lower lock case 1b as in the first embodiment.

The operation of the second embodiment will be described below with reference to FIGS. FIG. 10 shows an unlocked state in which the guard rod 8 is not engaged with the receiving hole 3 in the closed state. In this case, the cam 27 is urged to rotate in the clockwise direction by the spring 46, but the engagement receiving portion 27b of the cam 27 comes into contact with the engagement portion 16a of the hub 16 and cannot rotate. The guard rod 8 is also urged to rotate clockwise by the spring 46, but the shaft 18 fixed to the lock case 1 cannot be rotated because the engaging portion 8a of the guard rod 8 abuts.
That is, the guard rod 8 is kept in a state of being immersed in the lock case 1 without protruding.

In the state of FIG. 10, the operating member 10
That is, when the hub 16 is rotated by the key 12 or thumb turn (not shown) to the cylinder, the engagement portion 16a of the hub 16 rotates the engagement receiving portion 27c of the cam 27 by a predetermined angle, and the guard rod 8 is locked. The portion 9 is the fitting hole 3 of the receiving hole 3 of the receiving member 2.
It is protrudingly fitted to a (FIG. 11).

From this state of FIG. 11, when the operating member 10 such as the thumb turn is further rotated counterclockwise to the locking position as shown in FIG. 12, the shaft 44 is moved up to the upper limit position of the guide hole 38. , The guard rod 8 is moved upward, the locking portion 9 of the guard rod 8 is moved upward, and is engaged with the engaging hole 3b of the receiving hole 3 of the receiving member 2 (FIG. 12). Engagement portion 16a of hub 16
Engages with the engagement receiving portion 27c of the cam 27, and the engaging portion 58 of the guard rod 8 is pressed by the spring 46, so it is impossible to illegally push the guard rod 8 from the outside. Thus, the locking portion 9 holds the state in which it is still engaged with the engagement hole 3b of the receiving hole 3.

When the door (sliding door) a is opened to a predetermined range from the state shown in FIG. 12, the locking portion 9 moves upward in the engagement hole 3b and goes into a caution state as shown in FIG. At this time, the engagement portion 16a of the hub 16 engages with the engagement receiving portion 27c of the cam 27 to hold the cam 27 in the locked posture, and
Since the engagement receiving portion 57 of the cam 27 and the engagement portion 58 of the guard rod 8 are engaged with each other, the cam 27 and the hub 16 are rotated even if an operator tries to operate the operation member 10 such as a thumb turn by inserting a hand from the outside. Since it does not move, the operation member 10 cannot operate, and it is possible to prevent unauthorized unlocking.

In order to change the precautionary state of FIG. 13 to the unlocked state of FIG. 10, it is preferable to operate in the reverse order.

[0037]

[Third Embodiment] FIGS. 14 to 18 show a third embodiment of the present invention.
It will be described below based on. In this embodiment, as described in the second embodiment, the key 16 or the hub 16 operated by the thumb turn (not shown) is used as the operation member 10, and the transmission member 20 is provided in the lock case 1. A cam 2 that is rotatably pivoted and is rotated by the hub 16.
7 in that one end of the cam 27 and one end of the guard rod 8 are coaxially supported by a shaft 44 that is movable in a guide hole 38 formed in the lock case 1. It has the same configuration as. However, as the lock mechanism 50, the guide hole 38 is formed into a ball shape as shown in FIG. 18, and both ends thereof are used as the engagement receiving portions 61, 61, and the shaft 44 is provided with the guide hole. It is remarkable that the shaft 44 is formed in a rectangular shape so that it cannot move at both ends thereof, and that the shaft 44 is engaged with the engagement receiving portion 61 at the end portion of the guide hole 38 in the caution state. It has characteristics. Further, a protrusion 8b which is normally protruded toward the receiving member 2 side is formed on one end side of the guard ring 8, and when the door (sliding door) a is closed, the protrusion 8b abuts on the receiving member 2. hand,
The free end (locking portion 9) side of the guard rod 8 pops out and the locking portion 9
The second embodiment is also different from the second embodiment in that it is fitted into the fitting / removing hole 3a of the receiving hole 3 in a protruding manner. 14 to 17,
Reference numeral 47 is a click spring for stably holding the hub 16 in the unlocked state of FIG. 14 and the locked position of FIG.

The operation of the third embodiment is substantially the same as the operation of the second embodiment. FIG. 14 shows a state immediately before the door (sliding door) a is closed. When the door is completely closed in this state, the projecting portion 8b of the caution rod 8 comes into contact with the receiving member 2 as shown in FIG. The locking portion 9 side of the guard rod 8 is projected and fitted into the fitting / removing hole 3a of the receiving hole 3 of the receiving member 2. In this state of FIG. 15, when the hub 16 is rotated by a predetermined angle by operating the operation member 10 such as the key 12 or thumb turn (not shown) on the cylinder, the locking portion 9 of the guard rod 8 is locked as shown in FIG. Ascends and engages with the engaging hole 3b of the receiving hole 3, and the shaft 44 moves to the engaging receiving portion 61 at the upper end of the guide hole 38. At this time,
Even if an attempt is made to rotate the free end side of the guard rod 8 in the counterclockwise direction from the outside, the protrusion 8b of the guard rod 8 cannot rotate because it is in contact with the front surface of the receiving member 2. It is impossible to disengage the engaging portion 9 from the engaging hole 3b. Further, even if the free end side of the guard ring 8 can be rotated in the clockwise direction, the locking portion 9 only attempts to raise the engagement hole 3b. Therefore, there is no unauthorized unlocking from the outside in this closed door locked state.

When the door (sliding door) is opened over a certain range from the state of FIG. 16, the door becomes a bear with the door opened to the maximum as shown in FIG. At this time, the rectangular shaft 44 rotates as shown in FIG. 18A to engage the engagement receiving portion 6 of the eyelet-shaped guide hole 38.
Since the shaft 44 cannot be moved downward because it is engaged with No. 1, the cam 27 and the hub 16 cannot be rotated because the cam 27 and the hub 16 cannot be rotated even if an operator tries to unlock the thumb turn 15 by illegally manipulating the thumb turn 15 from the outside. The member 10 becomes inoperable. That is, it cannot be unlocked illegally. The guide hole 38 and the engagement receiving portion 6
The relationship between 1 and the shaft 44 functions as the lock mechanism 50.

The present invention can also be applied to an open door in which a guard rod is attached to the other end of a door whose one end is pivotally attached to the frame side and the door is arc-rotated. For example, the configuration shown in FIGS. 19 to 25, which is the fourth embodiment, can be adopted.

[0041]

[Fourth Embodiment] The fourth embodiment will be described below with reference to FIGS. In the locking lock of this embodiment, the structure of the lock case 1, the rack and pinion mechanism as the transmission member 20 provided in the locking case 1 for retracting the locking lever 8 and the receiving member 2 is the same as in the first embodiment. It is almost the same. However, the detailed components of the transmission member 20 and the operation of each member are different as described below.

The lock case 1 is roughly classified into an operating member 10 including a hub 70 or the like which is operated by a key 12 or a thumb turn (not shown), and a caution ring 8 by operating the operating member 10.
And a transmission member 20 that operates so as to move in and out.

The transmission member 20 is mainly the operation member 1.
Slider 21 operated by 0 and slider 21
Of the rack plate 22, which is moved in the opposite direction with respect to the movement of the slider 21, the pinion 25 which is engaged between the teeth 23 and 24 of the slider 21 and the rack plate 22, and is coaxial with the rack plate 22 and the lock case 1. And a lever 72 pivotally supported by a shaft 71.

The slider 21 has an inverted L-shape and has a lock case 1.
The guide holes 33 and 34 guided by the shafts 31 and 32 are formed in the upper and lower portions of the slider 21, and the slider 21 can be moved up and down by the stroke of the guide holes 33 and 34. . Also, this slider 2
On the side wall of No. 1, teeth 23 are formed in the upper part and engagement receiving parts 73, 74 for engaging the hub 70 are formed in the lower part thereof, and a click spring 75 wound around a pin 76 planted in the slider 21. Thus, the locked position and the unlocked position of the hub 70 are held stably. 77 is a spring bridge.

The rack plate 22 has one end of the rack plate 22 and the one end of the lever 72 coaxially supported by the lock case 1 by a shaft 71. The shaft 71 is a guide formed in the lock case 1. It can move up and down in the hole. Further, a hole 79 for inserting the shaft 71 formed in the rack plate 22 has a play so that the lever 72 can be rotated. Further, teeth 24 are formed on one side wall of the rack plate 22.

The teeth 23 of the slider 21 and the rack plate 2
A pinion 25, which is rotatably supported by the lock case 1, is engaged with the two teeth 24. When the slider 21 is moved upward by the rotation of the hub 70, the rack plate 22 is moved through the pinion 25. When the slider 21 is moved downward and the slider 21 is moved downward, the rack plates 22 move upward, so that the two 21 and 22 reversibly move.

The lever 72 has an upper plate portion 72a horizontally projecting, and the projecting upper plate portion 72a is normally provided with a spring 80.
Is engaged with the bent portion 81 of the slider 21.
Further, the lower side plate portion 72b extending to the lower portion is configured such that the locking portion 9 of the guard rod 8 is engaged with the engaging hole 3b from the engaging hole 3a in the closed state.
When it is completely entered, the lower side plate portion 72b comes into contact with the side wall of the storage member 82 forming the storage chamber 83 of the guard rod 8 to regulate the rotation range of the lever 72 and the guard rod 8. There is. Further, a notch 84 is formed in the lower portion of the lever 72, and an engaging projection 85 fixed to a horizontal shaft 86 with a pin 87 is rotatably faced in the notch 84. At one end of the horizontal shaft 86, a guard rod 8 having a locking portion 9 at the tip,
It is fixed by caulking.

As shown in FIGS. 19 to 24, lock case holes 88 are formed in both side walls of the upper portion of the lock case 1.
When the hub 70 is rotated from the unlocked state (the state shown in FIG. 19) to the bear (the state shown in FIG. 21) in which the guard rod 8 is locked, the engagement protrusion 85 causes the lock case hole 88 to move. , 88
When the door a is opened a little, the lower portion 85a of the engaging projection 85 is engaged with the lock case hole 88, and the guard rod 8
The door cannot be unlocked illegally even if it is attempted to rotate in the door opening direction. That is, the engaging projection 85 and the lock case 1
The lock case hole 88 constitutes the lock mechanism 50.

The operation of the fourth embodiment will be described below with reference to FIGS. FIG. 19 shows an unlocked state in which the operating member 10 is not actuated and the guard rod 8 is not engaged with the receiving hole 3 of the receiving member 2 in the closed state. In this case, the slider 21 is moved up to the maximum, whereas the rack plate 22 is in the lowest position due to the action of the pinion 25, and the upper part of the guard rod 8 has the pivot portion of the horizontal shaft 86 inside the lock case 1. Since it is operated toward one side, the locking portion 9 of the guard rod 8 faces inward from the through hole 6c of the front plate 6. In this case, the engagement portion 70a of the hub 70 engages with the engagement receiving portion 73 of the slider 21, and the click spring 75 holds this engagement state to keep the slider 21 in the maximum upward movement position. The unlocked state is retained. That is, in FIG. 25, the guard rod 8 is located inside the front plate 6 as shown by the solid line.

In the state of FIG. 19, the operating member 10
That is, by slightly actuating the cylinder or thumb turn, the engagement portion 70 of the hub 70, which is the operation member 10, is slightly rotated clockwise as shown in FIG.
When it is pushed down by the stroke of 9, the rack plate 22 moves upward by the action of the pinion 25 by the same amount as the stroke. At the same time, the lever 72 has a spring 8 at the upper plate portion 72a.
It is pushed down by 0 to rotate the lever 72 clockwise,
The upper end of the guard rod 8 also projects from the front surface of the front plate 6, and the locking portion 9 of the guard rod 8 projects and fits into the fitting / removing hole 3 a of the receiving hole 3. The locking portion 9 in this state is a in FIG.
Shows the state of.

From the state of FIG. 20, the engagement portion 70 a of the hub 70, which is the operation member 10, is replaced with the engagement receiving portion 7 of the slider 21.
When engaging 4 and rotating clockwise to the rotation limit position,
As shown in FIG. 21, the slider 21 moves down to the maximum downward movement position where the shafts 31 and 32 have moved to the uppermost ends of the guide holes 33 and 34. At the same time, the rack plate 22 moves up to the maximum moving position by the action of the pinion 25, and the lever 72 rotatably integrally held on the rack plate 22 by the shaft 71 also moves up integrally with the lever 72. The guard rod 8 pivotally attached to the arm also moves upward. The locking portion 9 of the guard rod 8 is inserted into the receiving hole 3a of the receiving member 2 through the engaging hole 3a.
It is locked in b and locked. (See FIGS. 21 and 25b).

In this locked state, as shown in FIG. 21 and FIG. 23, the lower portion 85a of the engaging projection 85 attached to the horizontal shaft 86 at the upper end portion of the guard rod 8 has the lower portion 85a of the locking case 1 pierced. The holes 88, 88 can be engaged. That is, in the locked state of FIG. 21, the engaging projection 85 (lower portion 85a) is not engaged with the lock case hole 88 as shown in FIG. The lower portion 85a of the engaging projection 85 is engaged with the lock case hole 88 as shown in FIG. That is, in the state of FIG. 21, even if an operator tries to operate a thumb turn or the like by inserting his / her hand from the outside, the lever 72, the rack plate 22 and the like are lowered by the lock mechanism 50 composed of the engaging projection 85 and the lock case hole 88. Since the guard rod 8 cannot be moved, it cannot be disengaged from the engagement hole 3b of the receiving hole 3, and thus unauthorized unlocking can be prevented.

When the door B is opened in the state shown in FIG. 21, the locking portion 9 of the guard rod 8 moves upward in the engagement hole 3b from the position b in FIG. 25 to open the door as shown in FIG. 25c. Is fully opened.

To change the state from c in FIG. 25 to the unlocked state, the door (sliding door) a is closed and the state shown in FIG. 21 is reached, and the hub 70 as the operating member 10 is operated to move the slider 21 upward. Then, the unlocked state shown in FIG. 19 is obtained.

[0055]

According to the present invention, (1) when the transmission member is actuated and locked by operating the operating member composed of the cylinder or thumb turn in the locking direction in the closed state, the locking portion of the guard ring is received. Since the locking portion is configured to move into the engaging hole from the fitting / detaching hole while being projected and fitted in the fitting / detaching hole of Is engaged with the engaging hole of the receiving hole, the locking portion of the guard rod is still positioned in the fitting / removing hole in the locking bear as in the conventional examples (a) and (b). The engagement of the stopper with the receiving hole to unlock the precautionary state is eliminated.

(2) The other end of the guard rod and one end of the rack plate or the cam are pivotally or slidably pivoted about an axis in a lock case attached to the front end side of the sliding door type door. At the same time, since the above-mentioned guard rod can be rotated in the same direction as the opening and closing direction of the door by operating the transmission member by operating the operating member, the guard rod can be moved relative to the opening and closing direction of the door like the conventional open door type. Since the swing lever is rotated in the same direction as the opening / closing direction of the door without being orthogonal to each other, the guard rod can be directly retracted into the receiving hole without rubbing against the frame side member, and the operation is simple. Also,
The pivot side of the watch rod of the present invention is provided in a lock case attached to the front end side of the door so that it does not project to the outside of the door tip, and the free end side (locking portion side) of the watch rod is Since there is no member projecting outward from the door and the front surface of the receiving hole side so as to be engaged with and disengaged from the receiving hole of the frame side, the drawbacks such as the unsightly appearance as in the conventional example are eliminated.

(3) According to the present invention, the operating member, that is, the operating member for making the watch rod rotatable in the same direction as the opening and closing direction of the door,
Since it is equipped with a cylinder and thumb turn, it can be locked or unlocked in a caution state by a key from the outside and thumb turn from the inside.

(4) At least one of the transmission member, the vigilance rod, and the lock case is provided with a lock mechanism that disables the operation of the cylinder and the thumb turn in the vigilance state so that the vigilance rod cannot be unlocked. Even if you try to unlock the door by operating the thumb turn etc. from the outside in the so-called vigilant state where the door is opened within the range regulated by the vigilance rod, the lock mechanism works, so it is not illegally unlocked and crime prevention is possible. The effect is excellent.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a door closed and unlocked state according to a first embodiment of the present invention.

FIG. 2 is a front view of the front plate of FIG.

FIG. 3 is a front view of a receiving member.

FIG. 4 is a cross-sectional view seen from the right side with the slider omitted in FIG.

5 is a vertical cross-sectional view taken along line VV of FIG.

FIG. 6 is a vertical cross-sectional view showing a state in which the locking portion of the precautionary rod is located in the fitting hole of the receiving hole while the cam is rotating.

FIG. 7 is a longitudinal sectional view showing a locked state in which the cam is completely rotated from the state shown in FIG. 6 and the engaging portion of the arm rod is engaged with the engaging hole of the receiving hole.

FIG. 8 is a vertical cross-sectional view of a precautionary state in which a door is opened to the maximum.

9 is a schematic plan view of FIG.

FIG. 10 is a vertical cross-sectional view of a second embodiment of the present invention in a door unlocking state.

FIG. 11 is a vertical cross-sectional view showing a state in which the locking portion of the precautionary rod is located in the fitting hole of the receiving hole.

FIG. 12 is a vertical cross-sectional view of a locked state in which the locking portion of the guard rod is located in the engagement hole of the receiving hole.

FIG. 13 is a vertical cross-sectional view of a precautionary state in which the door is opened to the maximum.

FIG. 14 is a vertical sectional view of the third embodiment of the present invention immediately before the door is closed.

FIG. 15 is a vertical cross-sectional view of the case where the locking portion of the guard rod is located in the fitting hole of the receiving hole in the closed state.

FIG. 16 is a vertical cross-sectional view of a locking state in which the locking portion of the guard rod is located in the engagement hole of the receiving hole.

FIG. 17 is a vertical cross-sectional view of a precautionary state in which the door is opened to the maximum.

FIG. 18 is an operation diagram showing a state where the shaft is engaged with the guide hole.

FIG. 19 is a vertical cross-sectional view showing the door closed and unlocked in the fourth embodiment of the present invention.

FIG. 20 is a vertical cross-sectional view showing a state in which the locking portion of the precautionary rod is located in the fitting hole of the receiving hole while the hub is rotating.

FIG. 21 is a longitudinal sectional view showing a locked state in which the hub is completely rotated from the state of FIG. 6 and the locking portion of the arm rod is engaged with the engaging hole of the receiving hole.

22 is a left side sectional view of FIG. 19. FIG.

FIG. 23 is a vertical cross-sectional view of the engagement protrusion and the lock case when the door is closed.

FIG. 24 is a vertical cross-sectional view of the engagement protrusion and the lock case when the door is opened.

FIG. 25 is an operation state diagram showing the operation of the watch rod.

[Explanation of sign]

1 Lock case 11 Cylinder 2 Receiving member 12 Key 3 Receiving hole 13 Cam 3a Fitting hole 15 Thumb turn 3b Engaging hole 20 Transmission member 8 Mandrel 21 Slider 9 Locking part 22 Rack plate 10 Operating member 25 Pinion 37 Shaft 53 Engaging Part 38 Guide hole 61 Engagement receiving part 44 Shaft 70 Hub 50 Lock mechanism 72 Lever 51 Engagement receiving part 85 Engaging projection piece 52 Lock piece 88 Lock case hole

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 24, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

[0030]

[Second Embodiment] A second embodiment of the present invention will be described with reference to FIGS.
It will be described below based on. Figure 10 shows the unlocked state,
FIG. 11 shows the locking portion 9 of the guard rod 8 during the locking operation after the door is closed.
12 shows a state of being fitted into the fitting hole 3a of the receiving hole 3, and FIG.
Operates the hub 16 completely to the locked position and engages the watch rod 8.
The locked state in which the stopper 9 is engaged with the engagement hole 3b is shown. Figure 10
In FIG. 13, reference numeral 16 is a hub corresponding to the cam 13 of FIG. 1, which is operated by an operating member 10 such as a key 12 or thumb turn (not shown), and 27 is rotatably supported in the lock case 1. A cam serving as a transmission member 20 that is rotated by the hub 16, one end of the cam 27 and one end of the guard rod 8 are coaxial with a shaft 44 that is movable in a guide hole 38 formed in the lock case 1. Is pivotally supported. The cam 27 has a relief hole 27 at one end for inserting the shaft 44 therethrough.
In addition to forming a, the other end is formed with engagement receiving portions 27b and 27c with which the engagement portion 16a of the hub 16 is engaged. The cam 27 has a shaft 45 pivotally supported on the lock case 1.
A spring 46 wound around is normally biased clockwise. The spring 46 is formed by the protrusion 59 of the guard rod 8 and the cam 27.
It is hung in between, and the vigilance rod 8 is rotated clockwise about the shaft 44 as a fulcrum,
The cam 27 is biased in a clockwise direction with the shaft 45 as a fulcrum.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

An engaging receiving portion 57 is provided on one end of the cam 27 so as to project by bending, and the guard rod 8 is provided.
1 is provided with an engagement portion 58, and the engagement receiving portion 57 and the engagement portion 58 are locked in a caution state until the door is opened as shown in FIG.
When the door is opened with caution , as shown in Fig. 1 to Fig. 12,
Even if the user engages like 13 and tries to turn the thumb turn by inserting his / her hand through the gap between the doors, the hub 16 cannot rotate because the cam 27 cannot rotate, and it cannot be unlocked illegally. . The engagement receiving portion 57 and the engagement portion 58 form a lock mechanism 50. The structure of the receiving member 2 other than the structure on the one end side of the cam 27, the hub 16 and the guard rod 8 described above is formed in the same manner as that shown in the first embodiment. The lock case 1 of this embodiment does not require the lower lock case 1b as in the first embodiment.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

From this state of FIG. 11, when the operating member 10 such as a thumb turn is further rotated counterclockwise to the locking position as shown in FIG. 12, the shaft 44 is provided with a guide hole provided in the lock case 1. The guard rod 8 is moved up to the uppermost position of 38, the locking portion 9 of the guard rod 8 is moved upward, and is engaged with the engaging hole 3b of the receiving hole 3 of the receiving member 2 to lock. State (Fig.
12).

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

From the locked state of FIG. 12, the door (sliding door) a
When opened, the locking portion 9 moves upward in the engagement hole 3b.
As a precautionary state, the maximum restriction open state shown in FIG. 13 is established. At this time, the engagement portion 16a of the hub 16 is engaged with the engagement receiving portion 27c of the cam 27 to hold the cam 27 in the locked posture, and the engagement receiving portion 57 of the cam 27 and the guard rod 8 are held. Since the engaging portion 58 is engaged, the cam 27 and the hub 16 do not rotate even if an operator tries to operate the operating member 10 such as a thumb turn by inserting a hand from the outside, the operating member 10 cannot operate, It is possible to prevent unauthorized unlocking.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0037

[Correction method] Change

[Correction content]

[0037]

[Third Embodiment] FIGS. 14 to 18 show a third embodiment of the present invention.
It will be described below based on. In this embodiment, as described in the second embodiment, the key 16 or the hub 16 operated by the thumb turn (not shown) is used as the operation member 10, and the transmission member 20 is provided in the lock case 1. A cam 2 that is rotatably pivoted and is rotated by the hub 16.
7 in that one end of the cam 27 and one end of the guard rod 8 are coaxially supported by a shaft 44 that is movable in a guide hole 38 formed in the lock case 1. It has the same configuration as. However, as the lock mechanism 50, the guide hole 38 is formed into a ball shape as shown in FIG. 18, and both ends thereof are used as the engagement receiving portions 61, 61, and the shaft 44 is provided with the guide hole. 38 rotating at both ends of the
It is formed in a rectangular shape so that it cannot move when it is moved, and the shaft 44 is configured to engage with the engagement receiving portion 61 at the end of the guide hole 38 in the caution state. I have. Further, a protrusion 8b which is normally protruded toward the receiving member 2 side is formed on one end side of the guard ring 8, and when the door (sliding door) a is closed, the protrusion 8b abuts on the receiving member 2. Also, the free end (locking portion 9) side of the guard ring 8 automatically pops out so that the locking portion 9 is fitted into the fitting / removing hole 3a of the receiving hole 3 in a protruding manner. Different from the second embodiment. 14
17 to 17, reference numeral 47 is a click spring for stably holding the hub 16 in the unlocked state of FIG. 14 and the locked position of FIG.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction content]

The operation of the third embodiment is substantially the same as the operation of the second embodiment. FIG. 14 shows a state immediately before the door (sliding door) a is closed. When the door is completely closed in this state, the projecting portion 8b of the caution rod 8 comes into contact with the receiving member 2 as shown in FIG. The locking portion 9 side of the guard rod 8 is projected and fitted into the fitting / removing hole 3a of the receiving hole 3 of the receiving member 2. In this state of FIG. 15, when the hub 16 is rotated by a predetermined angle by operating the operation member 10 such as the key 12 or thumb turn (not shown) on the cylinder, the locking portion 9 of the guard rod 8 is locked as shown in FIG. Ascends and engages with the engaging hole 3b of the receiving hole 3, the shaft 44 moves to the engaging receiving portion 61 at the upper end of the guide hole 38 , and is locked.
It At this time, even if the free end side of the guard ring 8 is to be rotated counterclockwise from the outside, it cannot rotate because the projecting portion 8b of the guard rod 8 is in contact with the front surface of the receiving member 2.
It is impossible to disengage the locking portion 9 of the guard rod 8 from the engagement hole 3b. Further, even if able to rotate the free end side of caution lever 8 clockwise, the engaging portion 9 outside the engagement hole 3b
I can't. Therefore, there is no unauthorized unlocking from the outside in this closed door locked state.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction content]

Open the door (sliding door) in the locked state of FIG .
Then, it becomes a cautionary bear and the maximum regulation open state of Fig. 17 is obtained.
It In the lock bear shown in FIG. 16, the rectangular shaft 44 is a guide.
The shaft 4 is located at the engagement receiving portion 61 above the hole 38 and opens when the door is opened.
4 rotates clockwise and the shaft 44 is engaged with the engagement receiving portion 61.
Since the shaft 44 cannot be moved downward, the cam 27 and the hub 16 cannot rotate and the operating member 10 cannot be unlocked even if the thumb turn 15 is illegally operated to unlock the shaft. Becomes inoperable. That is, it cannot be unlocked illegally. The guide hole 38 and the engagement receiving portion 6
The relationship between 1 and the shaft 44 functions as the lock mechanism 50.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0045

[Correction method] Change

[Correction content]

A shaft 71 is used as a lever at the upper end of the rack plate 22.
A shaft 72 is rotatably supported, and the shaft 71 can move up and down in a guide hole formed in the lock case 1. Further, a hole 79 for inserting the shaft 71 formed in the rack plate 22 has a play so that the lever 72 can be rotated. Further, teeth 24 are formed on one side wall of the rack plate 22.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction content]

The lever 72 has an upper plate portion 72a horizontally projecting, and the projecting upper plate portion 72a is normally provided with a spring 80.
Is engaged with the bent portion 81 of the slider 21.
Further, the lower side plate portion 72b extending to the lower portion is configured such that the locking portion 9 of the guard rod 8 is engaged with the engaging hole 3b from the engaging hole 3a in the closed state.
When it is completely entered, the lower side plate portion 72b comes into contact with the side wall of the storage member 82 forming the storage chamber 83 of the guard rod 8 to regulate the rotation range of the lever 72 and the guard rod 8. There is. Further, a cutout 84 is formed in the lower portion of the lever 72, and the cutout 84 is turned as shown in FIGS.
An engaging projection 85 fixed by a pin 87 is rotatably faced on the moving shaft 86 . At one end of the rotating shaft 86 , a guard rod 8 having a locking portion 9 at its tip is fixed by caulking or the like.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0048

[Correction method] Change

[Correction content]

FIG . 19 shows the unlocked state, and FIG.
The stopper 9 is fitted in the fitting / removing hole 3a), and FIG.
It is in a state. In the locked state of FIG. 21, the locking portion 9 is engaged.
The notch 84 and the engaging protrusion 85 are engaged with the hole 3b and the lock is formed.
It is located in the base hole 88. At this time, if you open the door, the notch
84 is rotated, and the engaging projection 85 is engaged with the lock case hole 88.
(See FIG. 24). When the engaging projection 85 is engaged with the lock case holes 88, 88 and the door a is opened a little, the lower portion 85a of the engaging projection 85 engages with the lock case hole 88, and the guard rod 8 is opened. The door cannot be unlocked illegally even if it is attempted to rotate in the door opening direction. That is, the engaging projection 85
The lock case hole 88 of the lock case 1 constitutes the lock mechanism 50.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0052

[Correction method] Change

[Correction content]

In this locked state, as shown in FIGS. 21 and 23, the lower portion 85a of the engaging projection 85 attached to the pivot shaft 86 at the upper end of the guard rod 8 is locked in the lock case 1. The case holes 88, 88 can be engaged. That is, in the locked state of FIG. 21, the engaging projection 85 (lower portion 85a) is not engaged with the lock case hole 88 as shown in FIG. The lower portion 85a of the engaging projection 85 is engaged with the lock case hole 88 as shown in FIG. That is, in the state of FIG. 21, even if an operator tries to operate a thumb turn or the like by inserting his / her hand from the outside, the lever 72, the rack plate 22 and the like are lowered by the lock mechanism 50 composed of the engaging projection 85 and the lock case hole 88. Since the guard rod 8 cannot be moved, it cannot be disengaged from the engagement hole 3b of the receiving hole 3, and thus unauthorized unlocking can be prevented.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a door closed and unlocked state according to a first embodiment of the present invention.

FIG. 2 is a front view of the front plate of FIG.

FIG. 3 is a front view of a receiving member.

FIG. 4 is a cross-sectional view seen from the right side with the slider omitted in FIG.

5 is a vertical cross-sectional view taken along line VV of FIG.

FIG. 6 is a vertical cross-sectional view showing a state in which the locking portion of the precautionary rod is located in the fitting hole of the receiving hole while the cam is rotating.

FIG. 7 is a longitudinal sectional view showing a locked state in which the cam is completely rotated from the state shown in FIG. 6 and the engaging portion of the arm rod is engaged with the engaging hole of the receiving hole.

FIG. 8 is a vertical cross-sectional view of a precautionary state in which a door is opened to the maximum.

9 is a schematic plan view of FIG.

FIG. 10 is a vertical cross-sectional view of a second embodiment of the present invention in a door unlocking state.

FIG. 11 is a vertical cross-sectional view showing a state in which the locking portion of the precautionary rod is located in the fitting hole of the receiving hole.

FIG. 12 is a vertical cross-sectional view of a locked state in which the locking portion of the guard rod is located in the engagement hole of the receiving hole.

FIG. 13 is a vertical cross-sectional view of a precautionary state in which the door is opened to the maximum.

FIG. 14 is a vertical sectional view of the third embodiment of the present invention immediately before the door is closed.

FIG. 15 is a vertical cross-sectional view of the case where the locking portion of the guard rod is located in the fitting hole of the receiving hole in the closed state.

FIG. 16 is a vertical cross-sectional view of a locked state in which the locking portion of the guard rod is located in the engagement hole of the receiving hole.

FIG. 17 is a vertical cross-sectional view of a precautionary state in which the door is opened to the maximum.

FIG. 18 is an operation diagram showing a state where the shaft is engaged with the guide hole.

FIG. 19 is a vertical cross-sectional view showing the door closed and unlocked in the fourth embodiment of the present invention.

FIG. 20 is a vertical cross-sectional view showing a state in which the locking portion of the precautionary rod is located in the fitting hole of the receiving hole while the hub is rotating.

FIG. 21 is a longitudinal sectional view showing a locked state in which the hub is completely rotated from the state of FIG. 6 and the locking portion of the arm rod is engaged with the engaging hole of the receiving hole.

22 is a left side sectional view of FIG. 19. FIG.

FIG. 23 is a vertical cross-sectional view of the engagement protrusion and the lock case when the door is closed.

FIG. 24 is a vertical cross-sectional view of the engagement protrusion and the lock case when the door is opened.

FIG. 25 is an operation state diagram showing the operation of the watch rod.

[Explanation of Reference Signs] 1 Lock case 22 Rack plate 2 Receiving member 25 Pinion 3 Receiving hole 37 Shaft 3a Fitting hole 38 Guide hole 3b Engagement hole 44 Shaft 8 Mandrel 50 Lock mechanism 9 Engagement portion 51 Engagement receiving portion 10 Operation member 52 Lock piece 11 Cylinder 53 Engagement portion 12 Key 61 Engagement receiving portion 13 Cam 70 Hub 15 Thumb turn 72 Lever 20 Transmission member 85 Engagement protrusion 21 Slider 88 Lock case hole

Claims (3)

[Claims] 1. A receiving hole 3 of a receiving member 2 in which the other end of a guard rod 8 having a locking portion 9 at one end is rotatably supported by a lock case 1, and the guard rod 8 faces the guard hole 3. A lock pad formed by a fitting / removing hole 3a into which the locking portion 9 of the rod 8 is removably fitted, and an engaging hole 3b communicating with the fitting / removing hole 3a and in which the locking portion 9 is engaged. In the closed state, the cylinder 11 or thumb turn 1
When the transmission member 20 is operated and locked by operating the operation member 10 composed of 5 in the locking direction, the locking portion 9 of the guard ring 8 is projected and fitted into the fitting / removing hole 3a of the receiving hole 3, and A locking pad characterized in that the locking portion 9 is configured to move from the fitting / removing hole 3a into the engaging hole 3b to be engaged and held. 2. A lock case 1 attached to the front end side of a sliding door type door a. The other end of the guard rod 8 and one end of the rack plate 22 or the cam 27 are not rotatable on shafts 37 and 44. The watch rod 8 is slidably pivotally supported and the operating member 1
The lock pad according to claim 1, wherein the transmission member 20 is actuated by an operation of 0 to be rotatable in the same direction as the opening and closing direction of the door a. 3. A lock mechanism 50 for locking at least one of the transmission member 20, the vigilance rod 8 and the lock case 1 so that the cylinder 11 and the thumb turn 15 cannot be operated in the vigilance state so that the vigilance rod 8 cannot be unlocked. The precautionary tablet according to claim 1, which is provided with.