JPH07100986B2 - Latch guide device for lock, latch retracting device, and latch release device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door, a latch guide device for a lock attached to a door, a latch retracting device, and a latch release device.

[Conventional technology]

As a lock to be attached to a door or a door, for example, a knob is attached to the inside or outside of the door and the latch is retracted by the rotation of the knob (for example, Japanese Utility Model Laid-Open No. 50-35691), and a knob is provided with a rotation prevention lever for the key axis. Lock (for example, Japanese Utility Model Publication No. 62-14061), lock that retracts and retracts the latch by raising and lowering the lever, and the like (for example, Japanese Utility Model Publication No. 59-10466, Japanese Utility Model Publication No. 60-90366), main lock box And locks in which different lock release devices are provided in the sub-lock box (for example, Japanese Utility Model Laid-Open No. 63-198799) are known.

[Problems to be Solved by the Invention]

There is a problem that the latch does not smoothly insert into the latch receiving metal fitting when the latch is pushed in and out by operating the knob or the lever, and the latch does not come in and out only when the lever is operated in one direction. There was a problem with the latch release device. Also, many locks with locking devices rotate the knob first and retract the protruding latch into the lock box,
There was a problem that you could not open or close without pushing or pulling the door.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to allow a latch to be retracted first by a lever operation so that a door or a door can be opened as it is. Another object of the present invention is to provide a lock that facilitates the latch to be retracted and retracted easily and can be locked easily and securely.

[Means for Solving the Problems]

In order to achieve the above object, in the lock guide device of the present invention, a latch guide body is attached to the storage chamber of the main lock box, and the latch is inserted into and retractable from the guide body so that the plane of the latch has a substantially diamond shape. The wedge-shaped head is provided with a substantially symmetrical tail portion, a lateral groove is opened in the center of the latch tail portion, projecting claws are projected on the inner and outer surfaces of the latch tail portion, the push rod is connected to the latch tail portion, and the guide body is inside. A guide groove into which the inner protruding claw of the latch tail is inserted is provided in the entire width of the plate, and a biting groove into which the outer protruding claw of the latch tail is inserted is provided approximately half width from the rear end of the outer plate, and the outer protruding claw is in the protruding state of the latch. Is disengaged from the bite groove and inserted inside the outer side plate, the latch head is tilted and fixed to one side, and immediately after retracting from the protruding state, the outer projection claw is inserted from the outer side plate into the bite groove, and inside and outside the latch. It is designed to be rotatable in any direction.

In addition, the latch retracting device before the lock pivots the operating rod that is inserted up to the sliding position of the push rod connected to the latch to the inner and outer levers that are pivotally supported in the bearing chambers of the main lock box and the sub-lock box, and both operating rod end parts. The spring is pressed against the stopper of the push rod, and the main lock box and the sub lock box are provided with pressing balls that are inserted into the notches of the operating rod.The lever causes the operating rod to move in and out, and the operating rod causes the notches to move. When the lever is disengaged from the pressing ball, the side portion of the operating rod contacts the pressing ball, and the tip of the operating rod is swung in the retracting direction of the push rod so that the push rod of the latch can be retracted.

Furthermore, the lock release device of the lock has an inner key on the inner lever,
In addition, the outer key is attached to the outer lever, the lock plate is attached to the inner key, and the cylinder body into which the tip of the lock plate is inserted and locked is attached to the outer key, and the lock plate is latched by the rotation of the inner key and the outer key. The push rod connected to the push rod can be swung laterally from the rear side, and the push rod can be swung rearward to prevent the backward movement of the latch, while the push rod can be swung laterally to move the latch backward.

[Action]

In the latch of the latch guide device, the outer protruding claw of the latch tail portion is housed in the outer plate of the guide body in the protruding state, so that the latch head cannot rotate in the inclined state.

When the latch is retracted from the projecting state, the outer projecting claws are inserted into the biting groove from the outer plate immediately after the latch is retracted, so that the latch can be rotated both indoors and outdoors.

The operating rod of the latch retractable device moves in and out toward the latch push rod by the swing of the inner and outer levers, the tip of the operating rod is pressed by the spring toward the stopper of the push rod, and the pressing ball that is locked in the notch of the operating rod is When the operating rod comes in and out, it comes out of the notch, presses against the side of the operating rod, swings the tip in the retracting direction of the latch, and retracts the push rod of the latch.

The lock plate of the latch lock release device can be turned by both the inner key provided on the inner lever and the outer key provided on the outer lever. While turning backwards to prevent the push rod from retracting, it avoids turning to the side of the latch push rod to allow the latch push rod to retract.

〔Example〕

Hereinafter, the structure of the lock according to the present invention will be described with reference to the drawings of the embodiments. D is an oscillating body such as a door or a door to which the lock 1 is attached, and the oscillating body D in the drawings is an open / close oscillating body. The holes h1 and h2 are formed in the inner side wall e1 and the outer side wall e2 of the rigid frame E that constitutes the rocking body D, and the lock 1 is attached using the holes h1 and h2. F is a frame material that faces the rigid frame E when the rocking body D is closed. The latch receiving metal fitting G of the lock 1 is attached to the frame material F, and the latch receiving metal fitting G has a latch insertion opening g1 or an insertion recess g2.
Is formed.

The lock 1 attached to the rocking body D pivotally supports the inner lever 4A in the bearing chamber A1 of the main lock box 2A so as to swing, the latch guide device 6 is provided in the storage chamber A2, and the latch 3 can be retracted in the storage chamber A2. On the other hand, a latch retractable device that is pivotally supported by the outer lever 4B in the bearing chamber B1 of the sub-lock box 2B and is operated by both levers 4A and 4B between the main lock box 2A and the sub-lock box 2B. 4 and a lock releasing device 9 which is operated by the keys 9A and 9B attached to both levers 4A and 4B. The main lock box 2A opens the lever bearing chamber A1 inward from the partition wall 2a, and the partition A storage room A2 is opened from the wall 2a toward the rigid frame E, and an opening 22 is provided in front of the storage room A2. The sub-lock box 2B is symmetrical with the main lock box 2A so that the partition wall 2b
The lever bearing chamber B1 is opened more outward, and the vacant chamber B2 is opened from the partition wall 2b toward the rigid frame E.

The latch guide device 6 provided in the storage room A2 of the main lock box 2A is composed of a latch guide body 8 attached to the storage room A2, a latch 3 protruding and retracted from the guide body 8, and a push rod 7 connected to a tail portion 3b of the latch 3. The latch 3 is a head 3a protruding outward from the guide body 8.
And a tail portion 3b having a lateral groove 34, and the head portion 3a has an inner surface a1.
And the outer surface a2 form a wedge shape continuous at an acute angle, the tail portion 3b forms a substantially trapezoidal shape symmetrical to the base portion of the wedge-shaped head portion 3a, and the plane of the latch 3 forms a substantially parallelogram-shaped substantially rhombic shape. Horizontal hole 33
And a lateral cutout groove 34 that opens rearward from the middle height of the central portion and extends toward the rear, an inner projecting claw 31 is provided at the rear of the tail inner surface b1, and an inner projecting claw 31 is provided at the rear of the tail outer surface b2. An outer projecting claw 32 projecting symmetrically with is provided, and both projecting claws 31, 32 project outside the latch maximum width S, and the inner surface a1 and the outer surface of the latch head 3a
Project to the extension of a2. The latch 3 is preferably formed by stacking a latch side plate 35, a latch plate 36, a protruding claw forming plate 37, and a latch core plate 38. And the latch guide device 6
The guide body 8 has a U-shaped plane, the front plate 8c inscribed in the opening 22 of the main lock box storage chamber A2 is provided with the entrance / exit 16 of the latch 3, and the inner plate 8a is provided with the guide groove 18 along the entire width. The outer plate 8b facing the inner plate 8a is provided with a bite groove 28 from the rear end to approximately a half width, and the latch inner projecting claw 31 is inserted in the guide groove 18 and the latch outer projecting claw 32 is inserted in the bite groove 28. Immediately before the completion of protrusion 3
Is inserted into the inside of the outer side plate 8b through the biting groove 28, whereby the latch head 3a inclines toward the room, and the head outer surface a2 becomes unrotatable in a state parallel to the protruding / retracting direction, and the latch 3 projects. Immediately after retreating from the state, the outer projecting claw 32 is inserted into the bite groove 28 from the outer side plate 8b, whereby the latch head 3a can swing to the range where it inscribes in the guide body inner side plate 8a and the outer side plate 8b. Further, the push rod 7 has a horizontal hole 7a which communicates with the horizontal shaft hole 33 of the latch 3 at its front end, an upward or downward stopper 17 provided at its rear end, and is inserted into a guide groove 25 provided in the storage chamber A2. The latch 3 can slide in and out, and the tip of the latch 3 is a lateral groove of the latch tail 3b.
The latch head 3a is connected to the horizontal shaft 7a through the horizontal shaft hole 33 by a pin P that is inserted through the horizontal shaft hole 33, and can swing to a range in which the inner surface a1 and the outer surface a2 of the latch head 3a are substantially parallel to the push rod 7.

The retracting device 4 of the latch 3 includes actuating rods 5A and 5B pivotally supported by the inner lever 4A and the outer lever 4B and inserted up to the latch push rod 7, and a stopper 17 provided with actuating rod tips 5a and 5b at the rear end of the push rod 7. Spring 11, which is pushed toward the main lock box 2A and the sub-lock box 2B, which are inserted into the notches 51 and 56 of the operating rods 5A and 5B, the pressing balls 14 and 15, both levers.
It consists of return springs 12 and 13 of 4A and 4B, and the inner lever 4A is provided with an arm piece 41 to be inserted in the central portion of the main lock box bearing chamber A1 and a leg piece 42 to be inserted in the front portion of the bearing chamber A1. The piece 42 is pivotally supported in the bearing chamber A1, the outer lever 4B is provided with an arm piece 46 and a leg piece 47 similar to the inner lever 4A, and the leg piece 47 is pivotally supported in the auxiliary lock box bearing chamber B1.
The A and 4B can swing toward the inside and outside of the room, the return springs 12 and 13 are provided under the leg pieces 42 and 47, and the return springs 12 and 13 hold the inner and outer levers 4A and 4B in a normal state. The inner actuating rod 5A of the latch retracting device 4 is pivotally supported by the arm piece 41 of the inner lever 4A and is inserted into the through hole 23 provided in the main lock box partition wall 2a, and the outer actuating rod 5B is the arm piece of the outer lever 4B. It is pivotally supported by 46, is inserted into the through hole 24 of the sub-lock box partition wall 2b, and can be moved in and out in accordance with the swing of the inner and outer levers 4A and 4B, and the front end 5a of both operating rods 5A and 5B, 5b reaches the latch push rod 7, overlaps in front of the stopper 17, and presses the operating rod end portions 5a, 5b against the stopper 17 by the spring 11. In addition, the pressing ball 1 of the latch retracting device 4
4, 15 are provided in the main lock box 2A and the sub lock box 2B respectively, and both levers 4
When A and 4B are in the normal state, they are inserted and locked in the notches 51 and 56 provided on the front side of the operating rods 5A and 5B, and both operating rods 5A and 5B are aligned in the inward and outward directions, and the operating rod tips 5a The push rod 7 moving in and out is advanced by 5b, and the latch 3 connected to the push rod 7 is in a protruding state. When one of the levers 4A and 4B is pushed or pulled in the indoor / outdoor direction in this state, for example, when the inner lever 4A is pulled to the indoor side, the lever 4A swings to the indoor side with the leg piece 42 as the center of the shaft supporting portion. As a result of pulling out the inner operating rod 5A pivotally attached to the arm piece 41, the pressing ball 14 inserted and locked in the notch 51 of the operating rod 5A.
Is pushed out from the notch 51 and comes into pressure contact with the side surface of the operating rod 5A near the tip portion 5a, so that the tip portion 5a of the operating rod 5A is swung rearward by that amount, whereby the push rod 7 is retracted, and the push rod is pushed back. The latch 3 connected to 7 is immersed. On the contrary, when the inner lever 4A is pushed to the outside of the room, the lever 4A swings to the outside of the leg 42 around the pivotal support, and the inner operating rod 5A pivotally attached to the arm 41 is pushed in. Pressed ball 14 inserted in notch 51 of 5A
Is pushed out of the notch 51 and is pivotally supported on the operating rod 5A and comes into pressure contact with the side surface, so that the tip portion 5a of the operating rod 5A is swung backward by that amount, whereby the push rod 7 is retracted. That is, when the inner lever 4A is swung either indoors or outdoors, the operating rod 5A is swung rearward, and the push rod 7 connected to the latch 3 is retracted.

The retracting device 4 of the latch 3 operates similarly even if the outer lever 4B is pulled to the outside of the room or pushed to the inside of the room.

The unlocking device 9 of the latch 3 is such that the inner key 9A is attached to the center of the inner lever 4A and the outer key 9B is attached to the center of the outer lever 4B.
The lock plate 19 that pivots around the lock hole 9a is provided on the inside, and the cylinder 29 into which the lock plate 19 is inserted is provided on the outer key 9B.
19 is attached to the inner key 9A via the bracket 39, is inserted into the guide hole 26 of the main lock box partition wall 2a, and can be turned within a range of about 90 degrees by the inner key 9A, and is also locked to the bracket 39. It is biased to one side by the spring 49, and when the latch 3 is projected, it swivels rearward of the push rod 7 to prevent the push rod 7 from retreating, while avoiding and turning to the side of the push rod 7, the push rod 7 can retreat. To do. The cylinder 29 is pivotally supported by the outer key 9B, and is a sub-lock box partition wall.
It is inserted into the window hole 27 of 2b and can be rotated by the outer key 9B,
The rotation causes the lock plate 19 inserted and locked to rotate.

In the lock shown in FIGS. 16 and 17, the latch guide device 6 is installed in the case C.
Of the inner and outer actuating rods 5A and 5B, and a swivel insertion hole c2 of the lock plate 19 are formed in the case C.
Is attached inside the rocker frame E, the main lock box 2A is attached to one of the frame E, and the sub-lock box 2B is attached to the other of the frame E.

The leg piece 42 of the inner lever 4A is pivotally supported on the upper portion of the main lock box bearing chamber A1, and the leg piece 47 of the outer lever 4B is pivotally supported on the upper portion of the sub lock box bearing chamber B1, and both levers 4A and 4B are pivoted downward. Even if it supports it, the same purpose is achieved. It is also possible to install the inner key 9A provided on the inner lever 4A and the outer key 9B provided on the outer lever 4B on the opposite side. When the guide body 8 of the latch guide device 6 is attached to the main lock box storage chamber A2,
If the inner side plate 8a and the outer side plate 8b are attached in opposite directions, they can be used as the lock 1 of the rocking body D that swings open / close toward the outside of the room, and the main lock box 2A and the sub lock box 2B of the fixed frame E can be used. It is also possible to reverse the mounting.

〔The invention's effect〕

Since the present invention is configured as described above, it has the effects described below.

In the lock guide device of the lock according to the present invention, the inner protrusion claw and the outer protrusion claw are symmetrically provided on the latch tail part, and the guide groove into which the latch inner protrusion claw is inserted is provided on the entire width of the inner wall of the latch guide body, while the rear guide body outer wall is provided. A bite groove into which the latch outer protruding claw is inserted is provided approximately half width from the end, and when the latch is projected, the outer projecting claw is inserted inside the outer wall from the bite groove, and the latch is inclined and protrudes to one side and cannot be rotated. . Moreover, when the latch is retracted from the projecting state, the outer projection claw is inserted into the biting groove from the outer wall immediately after retreating, and the latch can be rotated both inside and outside, so the resistance to slip out of the latch bracket is significantly reduced. In addition, the direction at the time of projecting the latch can be changed only by mounting the guide body by reversing the inner and outer walls.

The latch retracting device has a notch in the operating rod that is inserted from the lever toward the push rod of the latch, and inserts a pressing ball into the notch of the operating rod when the lever is normal. The operating rod moves in and out, and when the operating rod moves in and out, the pressing ball comes out of the notch, presses against the side of the operating rod, swings the tip of the operating rod backward, and retracts the push rod. That is, the latch retracts no matter which direction the lever is pushed or pulled. As a result, the operability is significantly easier than that of the retractable device that operates only when the lever is operated in one direction, and the retractable device is not overpowered.

Further, the latch release device can not only pivot the lock plate from both the inner key provided on the inner lever and the outer key provided on the outer lever, but also pivot to the rear of the push rod when the latch projects,
Since it is possible to directly prevent the push rod from retracting, it is not necessary to provide a locking device outside the latch. Moreover, since the lock plate is pivotally supported by the inner lever and the front end thereof is inserted and locked in the cylindrical body pivotally supported by the outer lever, it is not influenced by the swing of the lever. In particular, even when the lever is erroneously operated to move the operating rod in and out by the lock plate when the push rod is prevented from retreating, the pressing ball inserted in the notch of the operating rod is pushed back and the pressing ball is pushed. Since the load is absorbed by the, the retracting device is not damaged.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of use of a lock according to the present invention, FIG. 2 is a cross-sectional view of a main part of an open / close rocker, and FIGS. 3 (a) and (b).
Is a cross-sectional view of the main lock box and the sub-lock box, FIG. 4 (a) (b) is a front view and plan view of the latch, and FIG. 5 (a) (b) is an example of connecting the latch and the push rod. Partial cutaway front view and plan view, FIG. 6 is a perspective view of a similar latch in which a push rod is connected, FIG. 7 is an exploded perspective view of the latch components, and FIGS. 8 (a), (b), and (c) are latch guides. FIG. 9 (a) (b) is a perspective view showing an example of the structure of the guide, and FIG. 10 (a) (b) (c) (d) are front views of the guide. Figure and plan view,
Fig. 11 (a) and (b) are left and right side views, and Fig. 12 (a) is a cross-sectional view of the main part showing the mounting structure of the latch receiving bracket of the similar example.
(B) and (c) are partially cutaway plan views showing the operating state of the latch retractable device, and FIG. 13 (b) (b) and (c) are partially cutaway plan views showing the operating state of the latch lock release device. FIG. 14 is an exploded perspective view of the unlocking device, FIGS. 15 (a) and (b) are partially cutaway plan views showing an example of pivoting of the lock plate with respect to the push rod, and FIG. 16 is an exploded perspective view of a similar lock. FIG. 17 is a cross-sectional view showing an example of its use. 1 ... Lock, 2A ... Main lock box, 2B ... Secondary lock box, 2a, 2b ...
Partition walls, A1, B1 ... Supporting room, A2 ... Storage room, B2 ... Empty room,
3 ... Latch, 3a ... Head, 3b ... Tail, a1, b1 ... Latch inner surface, a2, b2 ... Latch outer surface, 4 ... Latch retracting device, 4A, 4B ... Lever, 5A, 5B ... … Operating rods, 5a, 5b …… Operating rod tips, 6 …… Latch guide device, 7 …… Push bar, 8 ……
Guides, 8a, 8b ... Side plates, 9 ... Unlocking device, 9A, 9B ...
… Keys, 11 …… Springs, 12,13 …… Return springs, 14,15…
… Pressing ball, 16 …… entrance, 17 …… stopper, 18 …… guide groove, 19 …… lock plate, 22 …… opening port, 23,24 …… through hole, 25 …… guide groove, 26 …… guide Hole, 27 …… Window hole, 28 ……
Biting groove, 29 …… cylindrical body, 31,32 …… projecting claw, 34 …… horizontal groove, 4
2,47 …… Legs, 41,46 …… Arms, 51,56 …… Notches, C ……
Case, D ... Opening / closing swinging body, E ... Hard frame, e1, e2 ... Hard frame side wall, F ... Frame material, G ... Latch bracket, h1, h2 ...
Punch, S ... Latch maximum width,

Claims (3)

[Claims] 1. A latch guide body (8) is attached to a storage chamber (A2) of a main lock box (2A), a latch (3) is inserted into and retractable from the guide body, and the latch has a wedge-shaped head (3a). A symmetrical tail (3
b) is provided, the plane has a substantially rhombic shape, the lateral cutout groove (34) is opened rearward from the central portion of the latch tail portion, and the projecting claws (b1) and outer surface (b2) of the latch tail portion are formed. 31, 32) are projected, the push rod (7) is connected to the latch tail, and the guide body has the guide groove (18) into which the inner protrusion claw (31) of the latch tail is inserted in the entire width of the inner plate (8a). , A bite groove (28) into which the outer projecting claw (32) of the latch tail is inserted is provided approximately half width from the rear end of the outer plate (8b). Inserted inside the plate, tilting and fixing the latch head to one side, and immediately after retracting from the protruding state, the outer projecting claw is inserted from the outer plate into the biting groove, enabling the latch to rotate in the indoor and outdoor directions. Lock guide device for locks. [2] An inner lever (4A) pivotally supporting the bearing chamber (A1) of the main lock box (2A) and an outer lever (4B) pivotally supporting the bearing chamber (B1) of the sub lock box (2B). , The operating rods (5A, 5B) that are inserted up to the sliding position of the push rod (7) connected to the latches (3) are pivotally supported, and the springs (11) are provided between the tips of the operating rods (5a, 5b) and the latches. ), Press the operating rod tip toward the stopper (17) provided at the rear end of the push rod, and insert it into the notches (51, 56) of the operating rod in the main lock box and the sub-lock box (51, 56). 14,15)
When the lever swings, the operating rod moves in and out, the notch is disengaged from the pressing ball due to the movement, and the side of the operating rod contacts the pressing ball, and the tip of the operating rod is swung in the retracting direction of the push rod. Latch retracting device for the lock that retracts. 3. An inner key (9A) is supported on an inner lever (4A) pivotally supported on the main lock box (2A), and an outer lever (4) is pivotally supported on a sub lock box (2B).
Attach the outer key (9B) to B) and lock plate (19) to the inner key
At the same time as mounting, the cylinder (29) into which the tip of the lock plate is inserted and locked is attached to the outer key, and the lock plate is connected to the latch (3) by the rotation of the inner key and the outer key, behind the push rod (7). A lock-unlocking device for unlocking the lock, which can be swung laterally from the side, swivels rearward of the push bar to prevent the latch from retracting, and swivels laterally to the push bar to retract the latch.