JPS606431B2 - door lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door lock incorporating an unlocking mechanism in the grip handle.

In the case of a secondary door lock, as shown in Fig. 1, the grip handle is fixed and does not have an unlocking function, but the lever lock provided at the top of the grip handle is pressed with the thumb. I was trying to get the latch bolt to work.

By the way, since the actuation force from fingers is relatively weak, the latch bolt part of the lock is pressed against the strike due to warping due to the material of the door itself and the difference in temperature between the inside and outside of the door, increasing the back load of the latch bolt. In this case, it becomes impossible to operate the unlocking lever with a finger, and the unlocking button is no longer available. The present invention has been made focusing on the above-mentioned points, and incorporates an unlocking mechanism into the grip handle.
By utilizing the grip force as an operating force, it is possible to easily drive and unlock a latch bolt that has a large back load.

An embodiment of the present invention will be described below with reference to the drawings.
In Fig. 2, A is the door, B is the iron body, and C is the grip handle.

In the coin body B, 1 is a dead bolt and 2 is a latch bolt, which are configured to be able to be moved in and out from the front plate 3.

Reference numeral 4 indicates a cylinder lock for operating the deadbolt provided on the outdoor side, and reference numeral 5 indicates a thumb turn for operating the deadbolt provided on the indoor side.

FIG. 3 shows a side view of the twill main body B, and as shown in the figure, a notch 6a is formed in the lower part of the case 6.
A latch drive plate 7 is provided within a so as to be movable up and down.

At the bottom of the latch drive plate 7 is located the end of a lever to be described later. The internal structure of the lock body is Jitsugatsu 50-4199.
This is known as shown in Publication No. 6. The grip handles C are provided opposite to each other on the inside and outside of the door A at the lower part of the lock body B.

The grip handle C is formed in a substantially U-shape, and a pressing moving plate 9 is provided with respect to the grip portion 8a of the mounting case portion 8. That is, spring guide pins 10, 10 are fixed to the south side of the pressing and moving plate 9, and the spring guide pins 10, 10 are slidably engaged with the mounting case portion 8, and are wound around the pins. The springs 11, 11 are biased outwardly.

12. Tortoise 2 is an E-ring and acts as a stopper.

A lever 13 and a bar 14 arranged in a substantially L-shape are rotatably supported by a pin 15 through a bent part on the side inside the mounting case part 8, and the end of the lever 14 is attached to the above-mentioned iron body. B
The lever 13 is opposite to the latch drive plate 7 at the lower part of the lever 13, and the lever 13 is connected to the connecting plate 9a at the center of the pressing moving plate 9.
and is pivotally connected by a pin 16, and the pin 16 is movably positioned within the elongated hole 8b in the mounting case portion 8.

The press moving plate 9 is provided with a cover 17 having a U-shaped cross section.
A cover 18 is further provided on the side of the cover 17.

In the above description, the outer grip handle portion has been described in detail, but the inner portion also has the same configuration. The square shaft 19 for driving the deadbolt in the cylinder lock 4 has a hub 20.
A drive pin 21 provided on the hub 20 was provided to be vertically movable.

When the deadbolt 1 is locked by the cylinder lock 4, the lock plate 22 is inserted into the horizontally elongated hole 22a of the lock plate 22, as shown by the imaginary line in FIG. It enters the movement locus of the spring guide pin 10 and the movement locus of the lever 14 through the hole 8c. 2
3 is a fixed plate having a spring guide pin 24;
The spring guide pin 24 is provided with a ball 25 which is biased by a built-in spring and is always in pressure contact with the lock plate 22, so that the dead bolt can be held in the unlocked state.

When the lock plate 22 is raised, the ball 2S
The lock plate 22 is inserted into the locking recess 22b at the opposing position of the lock plate 22 to prevent the lock plate 22 from being inadvertently lowered. In the above-mentioned explanation, when the grip handle C of the door A is grasped, the pressing moving plate 9 moves inward against the spring 11, thereby rotating the levers 13 and 14 and driving the latch port.

When the deadbolt is locked, the lock plate acts as a spring guide pin and enters the locus of movement of the bar, making the pressing plate inoperable.

Since the present invention is constructed as described above, the latch bolt unlocking mechanism built into the grip handle can be operated with a large force by grasping the grip handle, and even when the back load of the latch port is large, the latch bolt unlocking mechanism can be easily operated. It has the feature of being able to be unlocked.

Further, in the present invention, since the pressing plate becomes inoperable when the deadbolt is locked, unnecessary locking operations on the latch bolt can be avoided.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of a conventional door lock, Figure 2 is a front view of the door lock according to the present invention, Figure 3 is a side view of the lock body, Figure 4 is a sectional view of the grip handle, and Figure 5. is the same operating state diagram as above,
FIG. 6 is an explanatory diagram of the lock plate drive mechanism. 2...Latch bolt, C...Grip handle, 9...
...Press movement plate, 13, 14... Lever "22...
rock board. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1 A press moving plate is provided movably with respect to the grip handle via spring guide pins provided on both sides of the press moving plate, and is biased outward by a spring wound around the spring guide pin, and the grip handle A bent portion of a substantially L-shaped lever is rotatably supported by a pin on the inner side, and one end of the lever is pivotally connected to the pressing plate, and the other end is made to protrude inside the grip handle. A latch bolt in a lock body is unlocked by a lever, and when the dead bolt is locked, a lock plate driven by a cylinder lock is caused to enter a locus of movement of at least one of the pin and the lever, thereby restraining the movement of the pressing movement plate. A door lock featuring