JPS5817980A - Door 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] The present invention relates to improvements in latch bolt type door locks.

In the present invention, an opening/closing sensing piece is provided in parallel with the latch bolt. The opening/closing sensing piece can operate in combination with the latch bolt. Alternatively, only the latch bolt can be operated by preventing the opening/closing sensing piece from protruding toward the front.

In the former case, when the opening/closing sensing piece and the latch bolt are stacked and actuated simultaneously, the stack functions as an integrated latch bolt. That is, the stack is used as a normal self-closing door lock by providing the front side of the stack with an inclined surface on one side and using it for a single door, or with the front side of the stack having an inclined surface on both sides and using it for a double door. Also, the front side can be used with the end face intact, which is no different from a normal Crafty bolt.

The latter protrudes from the front of the opening/closing sensing piece. However, 7
Since the opening/closing sensing piece and the latch bolt are connected via a horizontal rank device, a portion proportional to the obstruction of the protruding stroke of the upper north opening/closing sensing piece is added to the protruding stroke of the latch bolt. In other words, the stroke of the latch bolt is increased. Therefore, especially when used as a door lock for double-hung doors, the latch bolt can be inserted deeply into the strike, thus ensuring reliable locking. Moreover, when opening the door, the latch bolt can be unlocked using the same operation as a normal latch bolt type door lock, and the handle operation and the amount of operation are exactly the same.

Next, the present invention will be explained in detail with reference to the drawings.

The latch bolt 4 is formed into a T-shaped side surface, and the two stepped surfaces of the rod portion 4a and the bottom portion 4d constitute the sliding surfaces of the opening/closing sensing piece 5, which will be described later, and the shoulder portion 4c is the shoulder of the opening/closing sensing piece 5. This is the extrusion working surface that joins the section. As shown in the figure, the latch bolt 4 is provided with a long hole 4b and a crank pin 4e on one side thereof.A shaft 6, which will be described later, passes through the long hole 4b, and the crank pin 4e engages with a lever 7, which will be described later.

The opening/closing sensing piece 5 is formed in a side-curved shape, and the flat surfaces of the plate portion 5a and the bottom surface 5d are in slidable contact with the launch bolt surface, and the shoulder portion of the bottom surface 5d is in contact with the shoulder of the latch bolt 4 as described above. When moving forward by abutting against 4C, the launch bolt 4 is pushed away, and when moving backward, only the opening/closing sensing piece 5 can retreat.

In the illustrated example, the opening/closing sensing pieces 5 are disposed vertically symmetrically with the latch bolt 4 between them. Although the arrangement of upper and lower knees ensures smooth operation, the quantity is not essential to the invention.

The opening/closing sensing piece 5 is also provided with an elongated opening 5b that passes through a shaft 6, which will be described later. In addition, a part of the plate portion 5a is shaved off, and a lever 7, which will be described later, is housed in the gap.
On one side of the opening 5b, a crank pin 5e is provided on the opposite side of the shaft 6 from the crank pin 4e of the notch bolt 4.

Further, the opening/closing sensing piece 5 is provided with a groove 5c in the front-rear direction, into which an arm 8C extending from a receiving plate 8, which will be described later, is slidably inserted. Further, a guide pin 5f is provided on the side surface to ensure smooth guidance within the case 11, which will be described later.

A lever 7 is disposed between the latch bolt 4 and the opening/closing sensing piece 5. The lever 7 has a shaft hole 7a in the center of the flat plate for pivotally supporting the lever 7 on a shaft 6, which will be described later, so that the lever 7 can be freely rotated, and long hole-shaped forks 7b and 7C at both ends of the shaft hole 7a. is provided. The fork 7b is engaged with the crank pin 4e of the latch bolt, and the fork 7C is engaged with the crank pin 5e of the opening/closing sensing piece.

As can be understood from the above, the shaft 6 vertically passes through the long hole 4b of the latch bolt, the shaft hole 7C that swings the lever 7, and the long hole 5b of the opening/closing sensing piece. The both ends thereof are locked to an arm 8C extending from a receiving plate 8, which will be described later.

As described above, the receiving plate 8 has two upper and lower arms 8C extending forward from the bottom plate 8a, and a shaft hole 8d provided at the tip of the arm 8C.
supports the shaft 6. Further, a stopper 8e is provided vertically protruding forward from the bottom plate 8a, and a spring 9 is supported by the stopper 8e and is arranged to press the opening/closing sensing piece 5 forward and elastically support it. The length of the stopper 8e is set so that when the tip of the stopper 8e collides with the opening/closing sensing piece 5, a normal cast relationship is formed, so that the stroke due to the elasticity of the spring 9 becomes the operating length of the opening/closing sensing piece 5. preferable. This stroke is also applied to the opening/closing sensing piece 5 and the length of the elongated hole of the latch bolt 4. In the illustrated example, guide pieces 8b are further provided on both sides of the bottom plate '8a, and are guided to an opening 11h provided in the case 11, which will be described later. The receiving plate 8 is elastically supported in the forward pressing direction via a spring 10 between the bottom plate 8a- and the bottom plate ttc of the case 11.

The case 11 houses each of the above elements and has top plates 1 on top and bottom.
1a, a side plate 11b, a bottom plate 11c, and a mounting plate lid,
The other side plate opposite to the side plate 11b is the case cover 1.
It consists of 2. However, the top plate 11a1 side plate 11b
and 12 guide the forward and backward movement of the receiving plate 8, opening/closing sensing piece 5, and latch bolt 4 to be accommodated. In particular, the side plate 11
b and 12 are provided with guide holes to facilitate smooth operation. The openings 11h and 12h guide the guide piece 8b of the receiving plate and form a gap into which a door handle or operating lever extending S is inserted. The operating lever 14 has the openings 11h and 12h.
The guide holes 11f and 12f are inserted into the bottom plate 8a of the receiving plate 8 so as to move the bottom plate 8a backward against the spring 10 (see FIG. 4). It engages with the guide pin 5f provided on the piece 5 and guides it. Moreover, the windows 11g and 12g are connected to the lever 7.
This is the air gap for swinging around the axis 6.

Furthermore, a stopper lie is provided protruding from the folding plate 11b to limit the front end of the stroke of the receiving plate 8.

The above-mentioned door lock according to the present invention has a 4.5
．． As shown in FIG. 6, the receiving plate 8 which is brought into contact with the front end stopper 11e by the spring 10 further presses the opening/closing sensing piece 5 toward the front end of the spring 9, and the opening/closing sensing piece 5 passes through to the front end. It's out. In this state, the shaft 6 supported by the receiving plate 8 is in contact with the rearmost end of the elongated hole 5b of the opening/closing sensing piece and the frontmost end of the elongated hole 4b of the latch bolt. At the same time, the shoulder portion 4C of the latch bolt 4 is pressed against the bottom portion 5d of the opening/closing sensing piece 5. In this way, the opening/closing sensing piece 5 and the notch bolt function as a stacked integral launch bolt, and are pressed forward and elastically supported, so that the front surface is sloped on both sides, for example, as shown in slopes 4g and 5g. When used as a normal elastic latch door lock. As shown in FIG. 1.2, when the lever 14 provided on the double door together with the door handle and extending from the door handle 2 is engaged with the receiving plate 8 to move the receiving plate 8 backward, the above-mentioned The opening/closing sensing piece 5 and the latch bolt 4 move back at the same time, the door is unlocked, and the door can be opened in both directions.

In the normal state, as described above, the shaft 6 is connected to the latch bolt 4 at the front and rear ends of the elongated hole 5b of the opening/closing sensing piece 5.
It is in contact with the frontmost end of the elongated hole 4b. A lever 7 pivotally supported by the shaft 6 engages a fork 7c with a crank pin 5e of an opening/closing sensing piece 5 located in front of the shaft 6, and a fork 7b at the other end engages a latch bolt 4 located at the rear of the shaft 6. (See Fig. 7).

Now, when only the opening/closing sensing piece 5 is pushed back, the spring 9 is compressed and only the opening/closing sensing piece 5 is moved back without the receiving plate 8 being moved back. The crank bin 5e then retreats to the rear of the shaft 6, causing the lever 7 to pivot around the shaft 6, thereby engaging the crank bin 4e with the other end 69 of the lever 7.
In other words, the latch bolt 4 is made to protrude forward.

This state is shown in FIGS. 9 and 10. Furthermore, the 8th
Although the figure shows one of the opening/closing sensing pieces 5 being pressed, it can be seen that the shaft 6 is tilted and the operation may not be smooth.

When the opening/closing sensing piece 5 is released from the pushed-in state as described above, the opening/closing sensing piece 5 protrudes, contrary to the above operation.
The lever 7 rotates in the opposite direction, and the latch bolt 4 retreats, returning to its original shape.

The above operation is caused by the rotation of the lever 7, which causes the opening/closing sensing piece 5 and the latch bolt 4 to move into the crank bin 5. This is achieved by a parallel rank combination performed by engaging e and 48.

Therefore, as shown in Figure 9, strike 1
When the latch bolt 3 is configured in such a shape that only the latch bolt 4 can protrude by obstructing the protrusion of the opening/closing sensing piece 5, the latch bolt 4 protrudes in the direction of engagement with the strike 13 of the door lock.
The stroke due to the horizontal rank connection is added to the normal stroke to achieve a deep plunge and securely lock the door. Note that the door is unlocked in the usual manner by operating the door handle, and even at this time, the launch bolt moves an additional stroke inside the lock due to the above-mentioned horizontal rank connection. In this way, a latch bolt-type door lock suitable for double-hung doors, which is easy to operate and lock, is obtained.

[Brief explanation of the drawing]

Fig. 1 is an external plan view of a double door equipped with the door lock of the present invention, Fig. 2 is a side view of the same as above, Fig. 3 is a component configuration diagram of an embodiment of the door lock of the present invention, and Fig. 4 is a Figure 5 is a side view of the same with the case cover removed, Figure 6 is a plan view of the same, Figure 7 is a state diagram of the opening/closing sensing piece and latch bolt operated simultaneously. Figure 8 is a state diagram when trying to activate one of the opening/closing sensing pieces of the same as above, Figure 9 is an operating state diagram of the same as above when a strike is installed to obstruct the opening/closing sensing piece, and Figure 10 is a diagram of the operating state of one of the opening/closing sensing pieces of the same as above. FIG. 4... U-2 Tivolt, 4b... Long hole opening, 5...
・Opening/closing sensing piece, 5b...long hole opening, 6...shaft, 9,
10...Spring.

Claims (1)

[Claims] a receiving plate that is elastically supported within the case and is movable back and forth; an opening/closing sensing piece that is elastically supported by the receiving plate and being movable back and forth; A long hole is provided in the center of the latch bolt in the front-rear direction, and a shaft is inserted through the long hole and is engaged with an arm extending from the receiving plate, and a shaft is attached to the pin. A door lock characterized in that the supported swing lever is connected in parallel to the opening/closing sensing piece and the latch bolt via the swing/swing lever.