JPS58168775A - Box lock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a box lock that can be operated from the outside.

Open the door supported by hinges to the interior, or
Or, depending on whether you want to open it toward the outside, you may have to change the direction of the latch bolt.

In other words, when closing the door by always positioning the inclined surface side of the latch bolt in the closing direction of the door, the inclined surface of the latch bolt automatically moves toward the catch plate provided on the door frame without turning the knob. While sliding, it temporarily retreats towards the door l-, and is automatically pushed into the hole in the catch plate by a spring and locked, so the direction in which the door is opened is towards the indoor side. The direction of the latch bolt is determined by VC, whether it is outside or outside.

In order to do this, it was necessary to prepare two types of locking devices with different directions of the latch bolt, which made inventory management extremely troublesome.

In addition, there are conventional locking devices in which only the direction of the Tivolt can be changed, but this can be done by removing the front plate provided on the front of the lock case, or by removing the lock case cover. Since the direction of the latch bolt is changed by changing the direction of the latch bolt, this work is troublesome.

The purpose of the present invention is to eliminate such drawbacks, and the purpose of the present invention is to provide a hole in the lock case so that the direction of the latch bolt can be changed from the outside of the lock case, and insert a thin rod through the hole to tighten the latch bolt. The purpose is to enable the operation of the internal mechanisms that work with the

This object is fully and satisfactorily solved by the following means.

In the present invention, a hole is provided in the case, and an actuating plate that interlocks with the latch bolt is placed at a position facing the hole, and by operating this actuating plate, the direction of the latch bolt can be easily changed. It is a box lock, and its gist is as set forth in the claims above.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a case, and the front surface of the case 1 is provided with an opening 1' through which the latch bolt 2 moves forward and backward, and the side wall of the case 1 is further provided with a small hole 1''.

The fixing frame 3 of the bolt 2 located inside the case 1 is fixed to the neck 2' of the latch bolt 2, and the protruding piece 4 fixed to the case 1 is fitted into the fixing frame 3, so that the fixing frame 3 slides. It serves as a guide when moving. Further, the spring 5 that causes the bolt 2 to constantly protrude outside the case 1 is connected to the protrusion 2'' at the rear end of the latch bolt 2 and the protrusion piece 4.
It is stretched between the two.

Forming a bent retaining piece 3'' on the side edge 3' of the fixed frame 31~,
One end 7' of a substantially shaped drive plate 7, whose approximate center is rotatably supported by a pin 6, is engaged with this engagement piece 3'', and the other end 7'' of this drive plate 7 can be connected indoors or outdoors. latch bolt 2
An operating plate 8 that is operated up and down by an operating knob (not shown).
This is done by engaging the protruding piece 9 that protrudes from the side line.

This actuating plate 8 is guided by a guide pin 10 in the vertical direction,
Further, the center of the actuating plate 8 is open, and both side edges 11', 11'' of the driving rod 11, which rotates together with a knob (not shown), are engaged with the upright pieces 12, 12' of the actuating plate 8.

Further, a bent spring receiving part 13 is provided at the lower part of the operating plate 8, and a spring 15 is stretched between a spring guide pin 14 provided on the spring receiving part and a fixed piece 15 fixed to the case 1. The operating plate 8 is constantly pressed down. This actuating plate 8 is biased by the spring 15 to move the case l.
A stopper spring 16 is provided on the inner wall surface of the case 1 so that the stopper spring 16 does not protrude outward.
The spring receiving portion 13 is placed on the holder.

Further, the bent piece 17 formed on the upper edge 8' of the actuating plate 8 is located at a position opposite to the small hole 1 provided in the side wall surface of the case 1.

Next, the operation when changing the direction of Tibalt 2 will be explained with reference to FIG. 2.

Insert a rod C that is thinner than the small hole 1 of the case 1, bring the tip of the rod C into contact with the bent piece 17 of the actuating plate 8, and push down the rod C in the direction of the arrow. Since the latch bolt 2 is moved by a small gap of one minute, a slight gap is created between the protruding piece 9 of the actuating plate 8 and the end 7'' of the driving plate 7. Then, the latch bolt 2 can be pulled out of the case 1 by pinching it with fingers, so that the neck 2' of the latch bolt 2 moves to the opening 1' of the case 1.

After pulling the latch bolt 2 out of the case 1 in this way, the latch bolt 2 is rotated to change the direction.

Even if the end 7'' of the driving plate 7 and the protruding piece 9 of the actuating plate 8 are constantly engaged, the direction of the Tivolt 2 is changed while pressing down the actuating plate 8 with the rod C. When the latch bolt 2 is further pulled out of the case 1, there is little resistance, and the latch bolt 2 will not accidentally slip from your fingers.

As described above, the present invention provides a small hole 1'' in the side wall surface of the case 1, inserts the rod C into the small hole 1'', and connects the actuating plate 8 that interlocks with the tipolt 2 between the actuating plate 8 and the case 1. move it in the gap between them and pull out the U7 Tivolt 2 outside the case 1,
Since the direction of the latch bolt 2 is changed at the position of the neck portion 2' of the latch bolt 2, a practical effect is achieved in that the work can be quickly performed without removing the case cover.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which FIG. 1 is a partially cutaway side view of the main part, and FIG. 2 is a side view of the operation of FIG. 1. ■...Case, ■"...Small hole, 2...Latch bolt, 5.15...Spring, 7...Drive plate, 8...Operation plate.

Claims (1)

[Claims] A case is provided with a neck portion protruding outside the case, an actuating plate that interlocks with the latch bolt, and a small hole formed in the side wall surface, and the actuating plate is positioned at a position facing the small hole. A box lock characterized in that a gap is provided between the actuating plate and the case so that the actuating plate can move, and the direction of the latch bolt can be changed by this gap.