JPH0358635B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric lock device that is installed on a residential door and that can be unlocked by remote control.

[Conventional technology]

In conventional electric locking devices, when the dead bolt is moved forward and backward by the drive of a motor, a mechanical control means and an electric are used to accurately position the locked position in which the dead bolt advances and the unlocked position in which it retreats. Generally speaking, there is a control means using a timer.

[Problem that the invention seeks to solve]

If the only means of controlling the dead bolt to operate accurately is mechanical, the structure will be complicated and there will be many causes of failure.If electric means is used, the parts of the control circuit will be expensive, making it difficult to obtain inexpensive products. It was hot.

[Purpose of the invention]

The object of the present invention is to form a notch recess on the outer circumferential side of a rotary cam that is driven by a motor and advances the dead bolt in the locking direction. In addition, a micro switch that approaches and separates from this notch recess is provided so that when this rotary cam makes one revolution to advance the dead bolt, the contact piece of the micro switch falls into this notch recess and cuts off the drive source of the motor. The purpose is to enable the position of the notch recess of this rotary cam to always return to its original position.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a side view of the main part of the electric lock device A, and is a diagram showing the unlocked position of the dead bolt.
Figure 2 is a side view with the lid (not shown) cut away from electric lock device A, Figure 3 is a right side view of Figure 2,
Figures 7 to 7 are diagrams of the operating state of the dead bolt, and Figure 4 is a diagram of the electric lock in the unlocked position, Figure 5 is a diagram of the electric lock in the moving position, and Figure 6 is the diagram of the locking state. Fig. 7 is a diagram showing the state of movement to the locked position.

1 and 2, a solenoid 2 that operates when energized is provided in the upper part of the case body 1 of the electric lock device A, and an electric wire H is connected to this solenoid 2, and together with the electric wire H' of the motor M, the case body Wire to external connector C of 1.

A blocking member 5 that prevents the dead bolt 4 from advancing is attached to the tip of the plunger 3 that is provided on the solenoid 2 and that moves back and forth, and one end 5a of this blocking member 5 is latched to the wall surface 1' of the case body 1. It is now possible to swing freely. Further, the other end 5b of the blocking member 5 is notched.

A dead bolt 4 that moves forward and backward from the case body 1 is swingably provided at the bottom of the blocking member 5 located at the bottom of the solenoid 2, and a protrusion 4a is formed on the upper side wall surface 4' of the dead bolt 4, so that when the lock is locked, a dead bolt 4 is provided. The protrusion 4a is located at a position where it engages with the notch in the other end 5b of the blocking member 5.

A reciprocating pin 6 is provided inside the dead bolt 4 to slide in a through hole 4'', and an annular groove 6' having an annular slope is provided at the rear of the retracting pin 6. This advancing/retracting pin 6 is always biased by a spring 7 within the dead bolt 4. Also, a vertically movable pin 8 having a tapered tip is attached to an annular groove 6' of the advancing/retracting pin 6.
It penetrates and is inserted. When the advancing/retracting pin 6 moves, the vertically moving pin 8 is raised and the blocking member 5
Push upward.

This vertical movement pin 8 is operated when a power outage occurs while the lock is in progress, and is used as an emergency release means.

In addition, in the locking operation of the dead bolt 4,
A rotary cam 9 that moves the dead bolt 4 toward the locked position and is driven by a motor M is provided at the bottom of the dead bolt 4. A push pin 10 implanted in the rotary cam 9 moves the dead bolt 4 toward The rotary cam 9 contacts the notch 4 at the rear end, and at the same time rotates when the motor M is driven, the dead bolt 4
is pushed by the push pin 10, advances to the outside of the case body 1, and becomes locked.

In addition, in order to stop the rotary cam 9 at the original position when it rotates once, a notch recess 9a is bored in the circumferential wall surface 9' of the rotary cam 9, and a micro Switch MS electrical contact piece 1
1 is arranged so that it can move forward and backward. Also, Dead Bolt 4
A spring 12 that biases the lock in the unlocking direction is stretched between one end of the dead bolt 4 and the wall surface of the case body 1. Therefore, when remotely controlled from the outside, the motor becomes energized, and the rotation cam 9 is rotated by the drive of the motor M. At this time, the push pin 10 of the rotating cam 9 pushes the rear end of the dead bolt 4,
When the dead bolt 4 is located at the locked position, the tip 5b of the blocking member 5 is engaged with the protrusion 4a formed on the dead bolt 4, thereby preventing the dead bolt 4 from retreating.

Next, when unlocking, when the solenoid 2 is energized by remote control, the plunger 3 is driven, so that the locking state between the blocking member 5 attached to the plunger 3 and the protrusion 4a of the dead bolt 4 is confirmed. At the same time as it comes off, the dead bolt 4 is moved in the unlocking direction (in the direction of arrow RO) by the spring 12 which always urges the dead bolt 4 toward the backward position.

Further, when the rotary cam 9 rotates once to the original position after moving the dead bolt 4 toward the locked position, the electric contact piece 11 of the micro switch MS is inserted into the notch recess 9a of the rotary cam 9. The power of the motor M driving the rotary cam 9 is cut off.

〔Effect of the invention〕

As described above, when the dead bolt is moved in the locking direction by the rotation of the rotary cam and the notch recess of the rotary cam is located at the original position, the electric contact piece of the micro switch falls into this notch recess. The power to the motor is cut off reliably, allowing the next locking operation to be carried out smoothly and simplifying the structure.
Moreover, since the electric contact piece of the microswitch is connected to and separated from the rotary cam to cut off the power supply, there are effects such as fewer failures.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the main parts of the electric lock device, Fig. 2 is a side view with the lid body cut away from the electric lock device, and Fig. 3 is the right side of Fig. 2. Top view, Fig. 4 is a state diagram of the electric lock in the unlocked position, Fig. 5 is a state diagram of the electric lock during movement to the locked position, Fig. 6 is a diagram of the locked position state, and Fig. 7 is a state diagram of the electric lock moving to the locked position. It represents a diagram. A...Electric locking device, M...Motor, MS...Micro switch, 1...Case body, 2...Solenoid, 3...Plunger, 4...Dead bolt, 5...Blocking member, 8...Vertical movement Pin, 9...
Rotating cam, 9a... Notch recess, 10... Push pin, 11... Electric contact piece.

Claims (1)

[Claims] 1 A case body, a solenoid provided within the case body that causes the plunger to retreat in response to an unlock signal, a blocking member that is swingably provided with one end as a fulcrum and whose other end is attached to the plunger; A dead bolt that is provided so as to be retractable and has a protrusion that is biased in the retracting direction and that is latched to the blocking member when protruding; and a dead bolt that is fixed to the shaft of the motor provided within the case body and has a notched recess formed in the peripheral wall surface. a rotating cam, a push pin provided eccentrically with respect to the axis of the rotating cam and pushing the dead bolt in the projecting direction by rotation of the rotating cam, and a periphery of the rotating cam. It consists of a micro switch with an electric contact piece in contact with the side wall surface, and in the original position where the electric contact piece contacts the notch recess, the push pin is in a position where it does not push the dead bolt, and the motor is turned off by the locking signal. An electric lock device that is characterized by rotating and returning to its original position.