JPH04221182A - Mortise lock device - Google Patents

Abstract

PURPOSE:To reduce the number of parts of a locking device and reduce the weight by carrying out locking by a locking lever and a latch bolt having a latch head in swingable manner and installing a lock releasing rod on the locking lever. CONSTITUTION:A lock device is generally constituted of a latch bolt 5, locking lever 13, and a lock releasing rod 17. The latch bolt 5 is formed by pivotally installing a latch head 4 and the upper and lower leg plates 6 and 6 by a shaft 7, and the latch head 4 is installed in swingable manner on the leg plates 6 and 6. Further, one edge of the locking lever 13 is pivotally installed on a casing by a fixed shaft 14, and a projection part 15 is formed at the other edge, and connected with the projection shaft 9 of the latch bolt 5, and the swing of the latch head 4 is suppressed. Then, the lower edge 17a of a lock releasing rod 17 is pivotally installed on the projecting pin 18 of the locking lever 13, and the fixation of the latch bolt 5 is released. Accordingly, the latch bolt 5 can be released by the locking lever 13, and the using convenience can be changed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carved lock device which is particularly suitable for use in electric locks and whose usability can be changed.

0002

[Prior art] As a locking device that can change usability,
Various structures have been proposed in the past. For example, by changing the direction of the latch head of the latch bolt, it can be opened inwardly or outwardly, or by deforming the latch head of the latch bolt, it can be opened both inwardly and outwardly. There were some that were designed to be compatible with

0003

[Problem to be Solved by the Invention] In models where the latch head direction can be changed, it is necessary to remove the face plate and rotate the latch head in order to change the usability, or to disassemble the lock box and rotate the entire latch bolt. It has the disadvantage that it requires assembly, which is complicated work at the construction site.

[0004] Furthermore, when a deformed latch head is used, the structure of the latch bolt becomes complicated, and as it becomes more complicated, the strength inevitably decreases, and it is necessary to compensate for the decrease in strength. Therefore, it became necessary to install a separate deadbolt in the locking device, which made the locking device bulky, heavy, and expensive, which often made it unsuitable for use.

[0005]

[Means for Solving the Problem] In order to eliminate the drawbacks of conventional products, the present invention provides a latch bolt with a latch head that can swing at a certain angle, and a locking bolt that fixes the latch head in the protruding position when the door is closed. a lever, and an unlocking rod that releases the latch head from being fixed by the locking lever;
was installed.

[0006]

[Operation] By installing a latch head that can swing parallel to the opening/closing direction of the door, the present invention makes it possible to apply a single engraved lock to a door that can be opened on either the left or right side. By pushing the bolt into the door frame seat and securely fixing it with the locking lever,
Deadlock the latch bolt to ensure locking, move the unlocking lever manually, electrically, or by any other means,
By moving the locking lever that is linked to this from the fixed position of the latch head, the latch bolt is released and the door can be opened.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The arrangement of parts will be explained with reference to FIG. 1, which is an internal explanatory diagram of an embodiment of the present invention, and the specific structure of each part will also be explained with reference to FIGS. 2 to 5.

5 in the figure indicates a spring 2 inside the casing 1.
is slidably housed under the action of the face plate 3 of the casing 1.
This is a latch bolt from which a latch head 4 protrudes.

As shown in FIG. 2 and below, the latch bolt 5 has a latch head 4 sandwiched between one end of two upper and lower leg plates 6, 6, and the upper and lower surfaces of the latch head 4 are flush with the upper and lower surfaces of the leg plates 6, 6. A part of the upper and lower surfaces of the latch head is cut out in a stepped manner so as to form a latch head 4.
and leg plates 6, 6 are pivotally connected by a shaft 7, and the latch head 4 is swingable relative to the leg plates 6, 6 about the shaft 7.

When the latch head 4 has finished swinging, the end tips of the leg plates 6, 6 located in the notched portions of the latch head 4 are connected to the latch head 4 and the leg plates 6, 6 to form a general latch. It has a chevron-shaped cut portion 6a so that the shape of a bolt is formed.

Reference numeral 8 denotes a connecting plate for integrally connecting the two upper and lower leg plates 6.

[0012] The protrusions 6' provided on the other ends of the leg plates 6, 6 to protrude laterally, respectively, slide within the guide grooves 1', 1' drilled in the casing 1, and engage the latch bolts 5. Stabilize sliding.

The tip 4a of the latch head 4 is connected to the casing 1.
The two surfaces 4b and 4c protrude outward and face the opening/closing direction of a door on which a lock is installed, similar to a general latch head, forming a certain angle (for example, 45 degrees).

Latch head 4 located between leg plates 6 and 6
A notch 4e horizontal to the swinging direction of the latch head 4 is bored in the inner end 4d of the latch head 4, and a disc 4' is inserted into the notch 4e. is rotatably pivoted on the inner end 4d of the disc 4'
The peripheral edge of the latch head 4 slightly protrudes from the inner end 4d of the latch head 4.

The protruding shaft 9 projects upward from an arc-shaped long hole 10 formed in the upper leg plate 6, and slides within the long hole 10 when the latch head 4 swings about the shaft 7. .

Reference numeral 11 denotes a moderation device that penetrates through the connecting plate 8 and is fixed thereto, and a moderation piece 12 that is given a tendency to protrude by a spring (not shown) installed inside is inserted into the latch head 4. It comes into contact with the end 4d to provide moderation to the start and end points of the swing of the latch head 4.

13 is a locking lever, one end of which 13
a is rotatably pivoted to the casing 1 by a fixed shaft 14, and a protrusion 15 extending toward the face plate 3 of the casing 1 is provided at the other end, and latch bolts 5 are mounted on both sides of the protrusion 15. a swing prevention surface 15a that prevents the protruding shaft 9 from swinging;
A retreat prevention surface 15b is provided to prevent the protrusion shaft 9 from retreating (rightward movement in FIG. 1).

The locking lever 13 is penetrated by the fixed shaft 14 and is pivotally connected to the casing 1, so that it is rotatable about the fixed shaft 14 and can also slide along the rotating shaft 14. . Utilizing this, the locking lever 13 is pressed by the screw 16 or the like screwed in from the outside of the casing 1, and the rotational position inside the casing 1 is set. (See Figures 7 and 8)

Reference numeral 17 denotes an unlocking lever, the lower end 17a of which is pivotally connected to the locking lever 13 by a projecting pin 18, and the cam 20 of the thumb turn hub 19 engaged near the upper end 17b.

At approximately the center of the unlocking rod 17 shown in FIG.
Plunger 24 of solenoid coil 23 shown in FIG.
A fitting portion 17c for fitting is provided.

21 is a trigger bolt, and a spring 22
Under the action of It is a known thing to retreat.

The trigger bolt 21 has a protruding piece 21 for operating one tongue piece 25a of the micro switch 25.
A and a pressing portion 21b are provided for pressing the oblique side portion 17d of the unlocking rod 17 when protruding and pushing the unlocking rod 17 upward.

The unlocking rod 17 also has a projection 17 for operating another tongue (not shown) of the microswitch 25.
e is provided protrudingly.

Reference numeral 26 shown in the lower part of FIG. 1 is a stopper piece that cooperates with a stopper pin 27 protruding from the leg plate 6 below the latch bolt 5 to determine the sliding range of the latch bolt 5. 28 shown in the upper part of the figure is a socket for wiring.

Both the locking lever 13 and the thumb turn hub 19 are biased by springs to rotate counterclockwise in FIG. The description is omitted.

To explain the operation, FIG. 1 shows the state of internal parts in an open state where the door is pulled toward the front in the figure.

In FIG. 1, the latch bolt 5 and the trigger bolt 21 protrude leftward from the face plate 3 of the casing 1, and the unlocking rod 17 is pressed against the pressing portion 21b of the trigger bolt 21.
The locking lever 13 is lifted up by the unlocking rod 17 and is in a state in which the latch bolt 5 is not fixed.

The state of the latch bolt 5 shown here is as follows:
As shown in FIGS. 2 and 4, the positional relationship between the latch head 4 and the leg plate 6 is as shown in FIG.

When door D starts closing from the state shown in FIG.
The trigger bolt 21 is pressed by the door frame F and retreats into the casing 1, and the surface 4c of the latch head 4 also comes into contact with the door frame F, and the latch head 4 moves counterclockwise in FIG. 4 around the shaft 7. It oscillates and reaches the state shown in FIG. (Figure 9
reference)

When the door D is further closed, the door frame F presses the surface 4c of the latch head 4, so the latch bolt 5 is pushed into the casing 1, and when the door D is completely closed, it protrudes again. , the latch head 4 enters into the catch seat S of the door frame F. (See Figure 10)

In this position, the trigger bolt 21 remains pushed into the casing 1 as long as the door D is closed, so the unlocking rod 17 is released from the trigger bolt 21 and the unlocking rod 17 is pivoted. The locking lever 13 that is attached to the locking lever 13 rotates in a counterclockwise direction in FIG.
is lowered to a position where it contacts the protruding shaft 9 of the latch bolt 5.

Since the protrusion 15 contacts the protruding shaft 9 with its swing prevention surface 15a and retreat prevention surface 15b as shown in FIG. 8, the latch bolt 5 swings as shown in FIG. 8 after the door is closed. The latch head 4 is located in the catch seat S and completely locks the door.

To open the door, rotate the thumb turn hub 19 in the clockwise direction in FIG. If the unlocking rod 17 is pulled upward by attracting the plunger 22 using the solenoid coil 21, the locking lever 13, which prevents the latch head 4 from retreating and swinging, as shown in FIG.
rises, allowing the latch bolt 5 to retreat.

When the door D is pulled open after the latch head 4 is released, the latch head 4 that is in contact with the inner edge of the catch seat S swings from the position shown in FIG. 6 to the position shown in FIG. When D is opened, the surface 4b of the latch head 4 is pushed against the edge of the catch seat S, and the entire latch bolt 5 is pushed into the casing 1.

When the door is opened, the latch bolt 5 protrudes out of the casing 1 again, and the trigger bolt 21 also protrudes out of the casing 1, and its pressing portion 21b presses against the unlocking rod 1.
The latch bolt 5 can move in and out of the casing 1 as long as the door D is open. .

[0036] In both cases of opening and closing the door, the latch bolt 5 will slide, but during these sliding movements, the surfaces 4b and 4c of the latch head 4 will be subjected to the action of the catch S, etc. .

Since this action is applied to the latch head 4 from a direction substantially perpendicular to the sliding direction of the latch bolt 5,
After the latch head 4 swings until the latch bolt 5 is completely retracted into the casing 1, the pressure applied to the latch head 4 is applied to the area where the latch head 4 and the leg plate 6 contact,
The leg plate 6 is received by the portion supporting the shaft 7 and the protruding shaft 9.

In order to cope with this effect more safely, in the present invention, a rotatable disk 4' is pivotally attached to the inner end 4d of the latch head 4, and the peripheral edge of the disk 4' is arranged so that the latch bolt 5 slides. When moving, it contacts the inner surface of the casing 1 and rotates, absorbing the action of the latch head 4 while reducing friction when the latch bolt 5 slides. (Figure 5
reference)

FIGS. 7 and 8 show the locking lever 1
3 acting on the protruding shaft 9 of the latch bolt 5 are shown in plan, but in the embodiment of FIG.
The latch bolt 5 is deadlocked as shown in FIG.

These hand changes can be easily made by inserting the screw 16 in FIGS. 7 and 8 from the side of the casing 1 and changing the position of the locking lever 13.

Furthermore, although the locking lever 13 is installed as shown in FIGS. 7 and 8, if the swinging position of the latch head 4 and the installation position of the locking lever 13 are in a combination different from those shown in these drawings, Even if the locking lever 13 is lowered, it simply rides on the upper end of the protruding shaft 9, and the latch bolt 5 is not deadlocked.

Microswitch 25 shown in FIG.
has two switch arms, trigger bolt 21
Although it has been explained that the operation is performed by the protruding piece 21a of the unlocking rod 17 and the protruding piece 17e of the unlocking rod 17, in this embodiment,
The former operation is used to detect whether the door D is open or closed, and the latter operation is used to detect the position of the locking lever 13.

Although the embodiment has been described as an electric lock that can be operated remotely, it is also possible to eliminate all electrical operations and use it as a purely manual lock.

The trigger bolt 21 can also be removed by appropriately controlling the energization state of the solenoid coil 23.

[0045]

As described above, according to the present invention, it is possible to obtain a carved lock device that operates reliably, can be freely changed in usability, and can be unlocked instantaneously, with an extremely small number of parts.

[Brief explanation of the drawing]

FIG. 1 is an internal explanatory diagram of an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing the main parts of FIG. 1;

FIG. 3 is a front view of the latch bolt.

FIG. 4 is a plan view of what is shown in FIG. 3;

FIG. 5 is a sectional view taken along line V-V in FIG. 3;

6 is a plan view of the latch head in FIG. 4 after it has finished swinging; FIG.

FIG. 7 is a plan view showing the positional relationship of the latch bolt in the locked state by the locking lever.

FIG. 8 is a plan view showing the positional relationship of the latch bolt in the locked state by the locking lever.

FIG. 9 is a cross-sectional plan view just before the door is closed, showing the movement of the latch bolt when the door is opened and closed.

FIG. 10 is a cross-sectional plan view when the door is closed, showing the movement of the latch bolt when the door is opened and closed.

FIG. 11 is a cross-sectional plan view just before the door is opened, showing the movement of the latch bolt when the door is opened and closed.

FIG. 12 is a cross-sectional plan view when the door is opened, showing the movement of the latch bolt when the door is opened and closed.

[Explanation of symbols]

1 Casing 2 Spring 3　　　　　　　Face plate 4 Latch head 4’ Disc 5 Latch bolt 6 Leg board 6a　　　Chevron cut part 7 Axis 8 Connecting plate 9 Protruding shaft 10 Long hole 11 Moderation device 12 Moderation piece 13 Locking lever 14 Fixed axis 15 Protrusion 15a Rocking prevention surface 15b Retreat prevention surface 16 screw 17 Unlocking lever 18 Protruding pin 19 Thumb turn hub 20 Cam 21 Trigger bolt 22 Spring 23 Solenoid coil 24 Plunger 25 Micro switch 26 Stopping piece 27 Stop pin 28 Socket

Claims (6)

[Claims] Claim 1: A latch bolt that includes a latch head that can swing within a certain range and that can slide within a certain range with respect to a casing; the latch bolt is fixed in a protruding position when the door is closed; A locking device consisting of a locking bar that prevents the latch bolt from swinging and retreating into the casing, and an unlocking rod that releases the latch bolt from being fixed by the locking lever when opening the door. 2. The machined lock device according to claim 1, wherein means for assisting sliding of the latch bolt with respect to the casing is installed between the latch bolt and the inner wall of the casing. 3. The latch bolt is provided with a notch parallel to the swinging direction of the latch head in the inner end thereof located in the casing of the latch head which is held between the leg plates and pivotally connected to the leg plates by a shaft, Claim: a disc is inserted into the notch, the disc is rotatably connected to the latch head by a protruding shaft, and the end of the protruding shaft is passed through an arc-shaped long hole bored in the leg plate. 1 carved lock device. 4. The locking lever includes a protrusion that comes into contact with the protruding shaft of the latch bolt when the door is closed, and the protrusion has a swing prevention surface that prevents the latch head from swinging, and the latch bolt retreats into the casing. Equipped with a retreat prevention surface that prevents
A carved lock device according to claim 1. 5. The locking lever includes a protrusion that comes into contact with the protruding shaft of the latch bolt when the door is closed, and the protrusion has a swing preventing surface that prevents the latch head from swinging, and the latch bolt retreats into the casing. Equipped with two sets of retreat prevention surfaces that prevent
The locking lever is moved perpendicularly to the sliding direction of the latch bolt by a screw screwed into the casing, and the operating position within the casing is determined. Claim 1:
engraved lock device. 6. The carved lock device of claim 1, wherein the unlocking rod is operated manually or electrically.