JPH0336099B2 - - Google Patents

Description

Detailed Description of the Invention The present invention is provided on an entrance door, and by rotating a knob or handle lever on the indoor side in the unlocking direction, a dead bolt or latch bolt is unlocked. This invention relates to a door lock device that can unlock a latch bolt with a thumb lever provided on the door, and move the dead bolt forward and backward in the locking or unlocking direction with a cylinder lock.

The purpose of the present invention is to simplify the structure of such a door lock device, and to provide a thumb lever on the indoor side.
Even though the handle levers on the outdoor side are operated in directions perpendicular to each other, the operating rods of the handle levers are positioned coaxially with each other, so that the handle levers can be easily attached to the door.

An embodiment of the present invention will be described below.

FIG. 1 is a side view of a locking device A on the indoor side and a locking device B on the outdoor side that operates the locking device A, with a portion thereof cut away to show the main parts.

FIG. 2 shows a front view when the latch bolt is in the locked position, and FIG. 3 shows a front view when the latch bolt is in the unlocked position.

A knob 1 for operating a dead bolt (not shown) is provided at the top of the locking device A, and a lever handle 2 that rotates is screwed onto a pivot shaft 3 with a screw 4 at the bottom thereof. A hub plate 6 for unlocking the latch bolt 5 is fixed to the rotation shaft 3.

Also, one end of the spring 7 fitted to the rotation shaft 3 is locked to the rotation shaft 3, and the other end 7' is locked to the protrusion 6' of the hub plate 6, so that the lever handle 2 is always held in a predetermined position. It is returned to the locked position.

Further, a hub plate 8 that operates independently of the rotation shaft 3 is loosely fitted to the rotation shaft 3 and is rotatable. Guide screw 10 in rectangular lock case 9
The guide screw 10 is inserted into the elongated hole 11' of the slide plate 11 and serves as a guide when sliding in the vertical direction. This slide plate 1
A pin 12 is implanted in the hub plate 1, and the pin 12 is brought into contact with the lower edge 8' of the hub plate 8. As the slide plate 11 rises, the hub plate 8 is rotated in the unlocking direction (see Fig. 3). move. A slide operating rod 13 having a U-shaped cross section is fixed to the back surface of this slide plate 11 with screws 14.

The tip 16' of the operating rod 16 of the thumb lever, which is pivotally connected to the case 19 of the lock operating device B on the outdoor side by a pin 15, is inserted into the slide operating rod 13. When the side edge 16'' of this tip 16' is brought into contact with the inner wall surface 13' of the slide operating rod 13, and the operating rod 16 of this thumb lever is rotated with a finger from the outdoor side, as shown in FIGS. 2 to 3. As shown in the figure, as this slide operating rod 16 rises, the pin 12 implanted in the slide plate 11 presses the hub plate 8 and causes it to rotate.

When the hub plate 8 rotates, the side edge 8a of the hub plate 8 is brought into contact with the upright piece 5a formed at the rear end of the latch bolt 5, so the latch bolt 5 biases the latch bolt 5. It moves backward in the unlocking direction while resisting the spring 17. 18 is a partition plate.

In this way, the present invention allows the latch bolt 5 to be unlocked by the operating rod 16 of the thumb lever operated in the vertical direction from the outside of the room, and the lever handle 2 to be rotated in the unlocking direction from the inside of the room. Therefore, although the hub plate 6 can operate the latch bolt 5 to unlock independently of the thumb lever operating rod 16, even if the thumb lever operating rod 16 and the slide operating rod 13 are located coaxially, There is no problem at all, and the work of attaching to the door can be done easily and quickly, and the structure is simple, so it is easy to assemble and can be manufactured at low cost.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the lock device and lock operating device on the indoor side, Fig. 2 is a front view when the lock is locked, and Fig. 3 is a front view when the lock is unlocked. A part of it has been cut out. A... Indoor lock device, B... Lock operating device,
1... Knob, 2... Lever handle, 5... Latch bolt, 6... Hub plate, 8... Hub plate, 10
...Guide screw, 11...Slide plate, 12...
Pin, 13... Slide operating rod, 14... Screw, 16
...Thumb lever operating rod, 17...spring.

Claims (1)

[Claims] 1. A rectangular lock case, a latch bolt that moves forward and backward from the rectangular lock case and is pressed by a spring, a hub plate that abuts the upright piece formed on the latch bolt and is fixed to the lever handle, and a hub plate that can freely rotate independently, and this hub. A slide plate with a pin that contacts and slides on the side edge of the plate; a guide screw that is fitted into a long hole in the slide plate and guides the slide plate; and a U-shaped cross section formed in the slide plate. A slide actuating rod having a shape of the shape of the slide actuating rod and a thumb lever actuating rod fitted into the slide actuating rod and coaxially arranged are provided. When the actuating rod of the thumb lever is pressed down, the slide actuating rod is pressed and the slide plate is raised simultaneously. A door lock device characterized in that the pin of the slide plate rotates the hub plate while pressing the side edge of the hub plate to unlock the latch bolt.