JPH0245406Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a security lock that is attached to the door such as an entrance for the purpose of confirming and protecting against outsiders. This relates to a dead bolt operating mechanism for a safety lock that can be switched between three states, and its purpose is to provide a mechanism for unlocking, a safety lock, and a safety lock by appropriately configuring the interlocking mechanism between the knob and the dead bolt. Each locking operation can be made smooth and reliable, and the overall size can be reduced, that is, the dimensions in the dead bolt operation direction can be made smaller, so that it can be attached to various types of doors.

The present invention will be described in detail below based on the illustrated embodiments. As shown in FIGS. 1A and 3B to FIGS. The back cover 2 is fitted and fixed.

The main body 1 has a connecting plate 4 equipped with a dead bolt 3 fixed to the front end, either integrally or as a separate member, so as to be slidable in a uniaxial direction (horizontal direction in the figure). The dead bolt 3 is inserted through the window hole 5 so as to be retractable from the window hole 5 formed in the side wall.

This connecting plate 4 has a long hole 6 extending in the sliding direction, and a plurality of engagement grooves that open in a direction perpendicular to the sliding direction and allow the dead bolt 3 to be fed by rotation of a knob (to be described later). 7,7′ and
A plurality of grooves 8, 8', 8'' are provided in order to position the dead bolt 3 in multiple stages, that is, in three stages. The guide pin 9 is fitted so that the connecting plate 4 and the dead bolt 3 slide in the uniaxial direction within the effective length of the elongated hole 6.

Further, the engagement grooves 7, 7' are formed by opening a window hole 10 in the center of the connecting plate 4, and are opened upward at the lower edge 10a of the window hole 10 to form a substantially Y-shaped front view. The openings are widened and are provided at appropriate intervals in the sliding direction.

Further, the grooves 8, 8', 8'' are formed on the upper edge 4 of the connecting plate 4.
a, and are provided at appropriate intervals in the sliding direction.

The main body 1 also has a bullet plate 12, one end of which is pivotally connected to the front wall 1a of the main body 1 or the back cover 2 via a fulcrum shaft 11.
is rotatable and elastically biased toward the connecting plate 4 side, that is, downward in FIGS. 1 to 3 B, by a spring 13 interposed between the other end 12a and the upper wall 1b of the main body 1 It's decorated.

The lower edge of this bullet plate 12 has a curved operating surface 1 that is pushed up by coming into contact with an eccentric shaft of a knob, which will be described later.
2b, and a positioning pin 14 is provided protruding from one side of the approximately central portion, and is removably engaged with one of the grooves 8, 8', 8'' of the connecting plate 4. This allows the connecting plate 4 and dead bolt 3 to be positioned at predetermined positions.

Further, in the main body 1, a knob 16 is rotatably disposed in a hole 15 formed approximately at the center of the front wall 1a thereof and is prevented from being removed by a retaining ring 17.

This knob 16 has two eccentric shafts 18, 18'.
protrude to the back side at appropriate intervals, that is, the connecting plate 4
Normally, as shown in the figure, it is kept spaced apart from the engaging grooves 7, 7', and the bullet plate 12 is spaced apart from the engaging grooves 7, 7'. It is designed to be in constant contact with the operating surface 12b of.

Further, the dead bolt 3 has a neck portion 3a at its tip.
At the tip of the arm 19, there is provided a head 3b having a substantially vertically elongated rectangular shape from the front, and as shown in FIG.
0 and in the closed state with the arm 19 in the vertical position, and by tilting the arm 19 in the precautionary locked state, the engagement between the two is prevented.

In the above configuration, when attaching this to the door 21, attach the main body 1 to the door 21 with screws (not shown).
On the other hand, on the vertical frame 22 of the door mounting frame, insert a receiver 23 at a position corresponding to the main body 1 with screws 24...
Fix it by.

As shown in FIGS. 4 and 5, the receiver 23 has a hole 25 for engaging the dead bolt 3 and an arm 1.
The arm 19 has a regulating piece 26 on the upper part for regulating the direction of the arm 19, and the arm 19 has a long hole 27 on the lower part, which is long in the longitudinal direction, so that it can rotate and slide in the longitudinal direction. It is pivotally supported by a shaft 28.

When attached in this manner, arm 19 is held vertically as shown in FIG. 4, and its hole 20 and hole 25 of receiver 23 are held in alignment.

Further, a hole 29 is provided in the vertical frame 22 in the same shape and in the same direction as the holes 20 and 25, as shown in FIGS. 1 to 3.

In the unlocked state, as shown in FIG. Then, the door 21 can be opened and closed freely.

When the door is closed and unlocked as shown in Figure 1 A and B, turn the knob 16.
When it is rotated counterclockwise in FIG.
b is pushed up, the bullet plate 12 rotates upward against the spring force, and the engagement between the pin 14 and the groove 8 is released. At this time, the other eccentric shaft 18 engages with the engagement groove 7 of the connecting plate 4 and presses its side edge to the right.
As a result, the connecting plate 4 is slid to the right in the figure along with the dead bolt 3, and the dead bolt 3 protrudes from the window hole 5 by approximately 1/2 of its sliding stroke, as shown in FIGS. 2A and 2B. It engages with the hole 20 of the arm 19 as shown in FIG. At this time, the dead bolt 3 is not engaged with the receiver 23 and the holes 25 and 29 of the vertical frame 22.

In other words, it becomes a precautionary lock state, so door 2 is closed in such a state.
When the arm 19 is opened, the upper end of the arm 19 is engaged with the dead bolt 3 and pulled in the direction of opening the door, so that the upper end of the arm 19, which had been in a vertical position as shown by the two-dot broken line in Fig. 5, becomes the solid line in the figure. The arm 19 tilts as shown in
The vertical frame 22 and the door 2 are opened within the effective length of the vertical frame 22 and the door 2.
1, and the door 21 cannot be opened any further.

In this way, the visitor can be confirmed through the gap.

In the above-mentioned safety lock state, the pin 14 of the bullet plate 12 engages with the groove 8', and the dead bolt 3 is positioned at that position, so that the safety lock state is maintained.

The rotation angle of the knob 16 at this time is 180 degrees.

When the knob 16 is rotated 180 degrees counterclockwise in the above-mentioned precautionary lock state, one eccentric shaft 18 rotates the bullet plate 1.
2 in the same way as above, push up and rotate the pin 14.
At the same time as the engagement with the concave groove 8' is released, the other eccentric shaft 18' engages with the engagement groove 7' and presses its side edge to the right in the figure. 3 slides as shown in FIGS. 3A and 3B, and the dead bolt 3 protrudes outward from the window hole 5.

Therefore, by operating the door as described above in the closed state, the dead bolt 3 engages with each of the holes 20, 25, and 29 in the arm 19, the receiver 23, and the vertical frame 22, resulting in the locked state shown in FIGS. 3A and 3B. becomes.

At this time, the bullet plate 12 is returned by the spring force, the pin 14 engages with the groove 8'', and the locked state is maintained.

Further, changing from the above-mentioned locked state to the precautionary locked state and furthermore to the unlocked state is possible by rotating the knob 16 in the opposite direction to the above-mentioned direction.

As explained above, since the dead bolt operating mechanism of the security lock according to the present invention is configured and operated, the rotation of the knob 16 performs the positioning/releasing operation of the bullet plate 12 that positions the connecting plate 4 provided with the dead bolt 3. , the feeding operation of the connecting plate 4 is controlled by the eccentric shaft 1.
8 and 18' at the same time, the switching operation between the unlocked state, precautionary lock state, and locked state can be performed smoothly and without malfunction, and the bullet plate 12 can be moved in the sliding direction of the dead bolt 3. Since the bolt can be rotated approximately at right angles, the overall size of the dead bolt in the sliding direction can be reduced and the size can be made smaller. Since it can be attached to a door with a similar structure and does not impair the design, it has the effect of expanding the scope of use of this type of security lock.

[Brief explanation of drawings]

Figures 1A and 2B are a cross-sectional plan view and a longitudinal sectional front view showing the dead bolt operating mechanism of the safety lock according to the present invention in an unlocked state, respectively, and Figures 2A and 2B are a diagram showing the same mechanism in a safety lock state, respectively. A partially sectional plan view, a longitudinal sectional front view, and FIGS. 3A and 3B are partially sectional plan views showing the locked state of the same mechanism, and a vertical sectional front view, and FIGS. FIG. 3 is a front view and a side view showing the state of use of the security lock, respectively. 1... Body, 3... Dead bolt, 4... Connection plate, 5... Window hole, 7, 7'... Engagement groove, 8, 8',
8″...concave groove, 11...fulcrum shaft, 12...bullet plate,
13...Spring, 16...Knob, 18, 18'...
...Eccentric shaft, 14...Pin, 19...Arm, 2
0, 25...hole, 23...receiver.

Claims (1)

[Scope of utility model registration request] As the knob 16 is rotated, the dead bolt 3 slides in the front and back direction, and when it comes out and goes out of the window hole 5 of the main body 1, it opens the receiver 23 and each hole 2 of the arm 19.
5 and 20, the dead bolt is provided at the front end, and the connecting plate 4, which is slidably installed in the main body, has an eccentric shaft protruding from the knob. 1
Engagement grooves 7, 7' are provided for feeding operation by releasably engaging with 8, 18', and a plurality of engagement grooves 7, 7' are provided on the upper edge thereof for positioning the dead bolt in multiple stages. Concave grooves 8, 8', 8'' are provided at appropriate intervals in the front and back direction, while a bullet plate 12 is provided in the main body.
is pivotally mounted with a fulcrum shaft 11, rotatable by the eccentric pin, and elastically biased toward the connecting plate by a spring 13, and a positioning pin 14 is provided on the plate, and a positioning pin 14 is provided in the concave groove. A dead bolt operating mechanism for a safety lock, which is characterized by being removably engaged with the lock.