JPH0344936Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a security locking device used for the doors of postboxes, lockers, etc., which facilitates locking and unlocking operations and makes it possible to change the password. Regarding the dial-type button lock that can be used.

[Conventional technology and problems]

Conventionally, as this type of security locking device, there are techniques described in Japanese Patent Application Laid-open Nos. 60-195278 and 60-195279.

That is, as shown in FIGS. 9 to 11, by pressing the push button 2 provided on the front surface of the security lock body 1, the lock body 1 is integrally connected to the rotary cam 3 and the rotary cam 3 by a ratchet mechanism. The dial 4 rotates one character at a time, and when the displayed number on the dial 4 matches the password, the flat surface of each rotary cam 3 is aligned with the lower surface (opposite side of the push button), and the lock/unlock operation panel 5
is in a state where it can slide on the lower surface of the rotating cam 3.

The locking/unlocking plate 7, whose movement in the unlocking direction (rightward) was prevented by the engaging piece 6 pivotally attached to the locking/unlocking operation panel 5, can now be moved to the right along with the locking/unlocking operation panel 5. Become.

Next, when the locking/unlocking knob 8 is turned in the unlocking direction, the protrusion 10 of the rotary plate 9 integrally connected to the locking/unlocking knob 8 rotates counterclockwise in FIG.
The locking/unlocking plate 7 that engages with the protrusion 10 is moved to the right to unlock a latch (not shown) attached to the locking/unlocking plate 7.

Locking is performed by rotating the locking/unlocking knob 8 in the locking direction, and as the protrusion 10 rotates clockwise, the locking/unlocking plate 7 that engages with the protrusion 10 is projected and locked by a latch.

Needless to say, after locking, the push button 2 is used to change the number on the dial 4 to a number other than the password.

As described above, in this conventional technology, when unlocking the door, the number displayed on the dial 4 must match the password, and then the lock/unlock knob 8 must be turned before the door can be opened. It was hot.

Further, the same operation is required when locking the door, and it is troublesome that the door cannot be locked by simply pushing the door back and closing it.

It is desirable to make the locking and unlocking operations necessary to open and close the door as simple as possible.

With this invention, the door can be opened by simply aligning the dial with the PIN number, and the door can be locked by simply pushing the door back and changing the dial to a number other than the PIN number, making it an easy-to-operate dial that does not require any lock/unlock knobs. The present invention provides a button lock, which also has the following advantages.

(a) In order to enhance the crime prevention effect, the PIN number can be changed to any number very easily if necessary.

(b) When a new resident does not know the PIN number or has forgotten the PIN number, such as when using it to lock and unlock a mailbox door, the number can be easily learned.

[Means for solving problems]

This invention has teeth that removably engage with teeth provided on the inner circumferential surface of a dial with a ratchet mechanism that rotates by a push button, and is rotatably supported on a shaft that is movable in the axial direction. A groove is provided on the outer circumferential surface of the cord joint into which the tip of the spring-biased lock lever fits in and is removed, and a push plate is provided on one side of the lock plate with a notched groove that engages with the lock lever when the lock lever is in the retracted position. A guide groove is provided for rotating the latch, which is pressed and protruded, in the unlocking direction as the lock plate retreats, and a guide groove for rotating the latch in the locking direction is provided on the case side.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

Reference numeral 11 is a case, and a cover 12 is on the top.
Further, a joint panel 13 is attached to the front part to form a box-shaped casing.

Brackets 11a and 11 protruding from the case
b and a bracket 12 protruding from the cover 12.
The box-shaped casing is fixed to the door by a.

A handle 11e protruding from the front surface of the case 11 is used for opening and closing the door after being attached to the door.

There is a push button 14 on the front of the joint panel 13.
A hole 13a and a window 13b for reading characters on the dial 15 are opened.

A spring receiver 12b for a spring 16 is provided protruding from the inner surface of the cover 12, and the push plate 17 pressed by the spring 16 presses the latch 18 outward (leftward).

The push button 14 is pushed forward by a spring 19, and when the push button 14 is pushed against the elastic force of the spring 19, the dial 15 is rotated one character at a time by the ratchet mechanism (see FIG. 6).

In addition, in this ratchet mechanism, the push button 14 is pressed against the joint panel 13 by the spring 19, and the protrusion 14a that bends and protrudes rearward of the push button 14 locks the ratchet wheel 15b of the dial 15. An elastic pawl 28a provided on the case 28 comes into contact with the ratchet wheel 15b to prevent the dial 4 from idling (FIG. 8A), and when the push button 14 is pushed against the spring 19, the push button Corner 1 that protrudes inward
4b contacts the ratchet wheel 15b and rotates the ratchet wheel 15b clockwise (FIG. 8B).

When the push button 14 is further pressed, the claw 28a moves to the ratchet wheel 1.
5b (FIG. 8C) and the ratchet wheel 15b rotates one pitch, the pawl 28a engages with the ratchet wheel 15b again.

The inner peripheral surface of the dial 15 has teeth 15a, the number of which is equal to the number of characters on the outer peripheral surface of the dial 15.
a is a tooth 20 provided on the outer periphery of the cord joint 20
a (see Figure 7).

Therefore, along with the dial that rotates character by character by the reciprocating movement of the pushbutton 14, the code joint 2
0 also rotates as a unit.

The cord joint 20 is loosely fitted into the small diameter portion 21a of the shaft 21, is pressed leftward by the spring 22, and abuts against the large diameter portion 21b of the shaft 21.

The shaft 21 is prevented from protruding to the left by the E-ring 23 that contacts the casing 1, but when the head 21c of the shaft 21 is pushed against the spring 22, it collides with the shaft 21 and the large diameter portion 21b. Move the code joint 20 to the right and dial 15.
The engagement between the teeth 15a and the teeth 20a of the cord joint 20 is released (see FIG. 7).

In this state, when the push button 14 is pressed, the code joint 20 remains stationary and only the dial 15 rotates one character at a time.

A spring 24 disposed on the inner surface of the case 11 is connected to a lock lever 26 via a plate-shaped lever plate 25.
is pressed, and the sloped tip 26a of the lock lever 26 comes into pressure contact with the outer peripheral surface of the cord joint 20.

On the other hand, a V groove 20b is provided at one location on the outer peripheral surface of the cord joint 20, and the cord joint 20
rotates to adjust the position of the V groove 20b and the lock lever 26.
When the positions of the tip portions 26a of the two match, the tip portions 26a enter the V-groove 20b.

The upper part of the lock lever 26 has a head 26b that engages with the notch groove 27a of the lock plate 27 in the retracted position. position, the lock plate 27 is disengaged from the lock lever 26, and becomes capable of moving in the left-right direction on the inner case 28 housed in the case 11 (see FIGS. 4 and 5). (see figure).

A guide groove 2 on the left side of the lock plate 27 engages with a long leg 18a protruding from the lower surface of the latch 18.
7b (see FIGS. 4 and 5).

A short leg 18b is further protruded from the lower surface of the latch 18, and a long leg 18a and a short leg 1 are provided from the upper surface of the latch 18.
Protrusions 18c and 18d are provided coaxially with 8b.

A guide groove 11c for the long leg 18a and a guide groove 11d for the short leg 18b are provided on the upper surface of the casing 11, and a projection 18c is also provided on the inner surface (lower surface) of the cover 12.
and 18d are provided with guide grooves 12c and 12d (see FIG. 4).

The latch 18 is pressed against the push plate 17 and protrudes outward as shown in FIG.
When the head 26b of the lock lever 26 is engaged with the notch groove 27a of the lock plate 27, even if a force F is applied to the latch to pull the handle 11e toward you and open the door, the latch 18 remains in the stationary lock. Although it is restrained by the plate 27 and maintains its protruding state, when the head 26b is not engaged with the notch groove 27a, the force F of trying to open the door causes the latch 18 to rotate with the short leg 18b as a fulcrum. The received lock plate 27 moves back to the left, and the latch 18 moves to case 1.
The door is opened to retreat into 1.

A peephole 12e is formed in the cover 12, and the distal end 2 of the lock lever 26 can be seen through the peephole 12e.
6a is fitted into the V-groove 20b of the cord joint 20 and the head 26b of the lock lever 26 is in the disengaged position, the metallic color of the head 26b can be seen.

This peephole 12e is for checking the position of the lock lever 26 when you forget your password.If the head 26b is in the engaged position, only the black inner case 28 can be seen through the peephole 12e.
As long as 2e is completely dark, it can be known that the characters on the dial 15 are different from the password.

In order to unlock the door equipped with the dial type button lock of the present invention configured as described above, push button 14 is used.
When you press and match the numbers displayed on the dial 15 with the PIN number, the position of the V groove 20b of the code joint 20 that rotates integrally with the dial 15 moves to the lock lever 26 that presses the code joint 20.
The tip 26a matches the tip 26a of the V groove 2.
0b, the head 26b of the lock lever 26 is separated from the cutout groove 27a of the lock plate 27 accordingly.

Therefore, the lock plate 27 can be moved left and right on the inner case 28, and when the handle 11e is grasped and the door is pulled toward the user, the latch 18 receives an external force in the direction of the arrow F, and the long leg 18a side of the latch 18 is moved toward the lock plate 27.
The door will be opened in order to retreat.

That is, by simply matching the dial number with the password, the door can be unlocked and opened by grasping the handle 11e.

Next, to lock the door, when the door is closed, the latch 18 receives a force in the direction opposite to the arrow F direction, and the short leg 18b side rotates, causing the latch 18 to retreat into the case 11, and the door to the closed position. The hour latch 18 protrudes under the pressure of the spring 16.

Therefore, by setting the dial display number to a number other than the password after closing the door, the tip part 26a
is pushed out from the V-groove 20b, the head 26b fits into the notch groove 27a, and the backward movement of the lock plate 18 is suppressed, so that the latch 18 will not retreat even if the handle 11e is pulled forward.

To change the password in order to improve the security effect, by pressing the push button 14 while holding down the head 21c of the shaft 21, the code joint 20 is displaced together with the shaft 21, and the dial 15 is changed.
The tooth 15a of the code joint 20 is disengaged from the tooth 20a of the code joint 20, and only the dial 15 is rotated one pitch at a time by the ratchet mechanism to change the dial number corresponding to the V groove 20b, thereby changing the password.

Therefore, the password can be easily changed to any number.

Being able to easily change the PIN number means that if the resident of an apartment, condominium, etc. changes,
Extremely convenient for new residents.

Also, if the new resident does not know the old password, or has forgotten the password for some reason, there will be a problem in which the door cannot be opened. It is very convenient because you can tell the unlocked position of the lock lever by color.

〔effect〕

The present invention has the following effects.

(a) The lock can be unlocked simply by matching the numbers displayed on the dial with the PIN number, and no other operations are required, making it easy to unlock.

Further, the door can be locked simply by closing the door and changing the number displayed on the dial to a number other than the password, and no other operations are required, making it easy to lock.

(b) For crime prevention, it is possible to easily change the password to any number, which increases the crime prevention effect both for new residents and for those who continue to use the home.

[Brief explanation of the drawing]

1 to 8 show embodiments of the present invention.
The figure is a front view of the combination button lock, Figure 2 is a top view of the same as above, Figure 3 is a side view of the same as above, Figure 4 is a perspective view of the components of the combination button lock, and Figure 5 is with the cover etc. removed. 6 is a plan view showing the relationship between the push button, dial, and cord joint; FIG. 7 is a sectional view of the same essential parts; FIG. 8 is a longitudinal sectional view of the ratchet mechanism; FIG. 10 is a front view of a conventional dial-type button lock, FIG. 10 is a vertical sectional view of the same, and FIG. 11 is a back view of the same with the back cover removed. 11...Case, 12...Cover, 13...Joint panel, 14...Push button, 15...Dial, 17...Push plate, 18...Latch, 20...Code joint, 21... Shaft, 23...E ring, 25...Lever plate, 26...Lock lever, 27...Lock plate, 28...Inner case.

Claims (1)

[Scope of utility model registration request] A cord joint is rotatably supported on an axially movable shaft and has teeth that removably engage with teeth provided on the inner peripheral surface of a dial with a ratchet mechanism that is rotated by a push button. Outer surface 1
A groove is provided at a location in which the tip of a spring-biased lock lever fits in and out, and the lock plate is pressed by a push plate and protrudes from one side of a lock plate having a notched groove that engages with the lock lever when the lock lever is in a retracted position. A guide groove is provided to rotate the latch in the unlocking direction as the lock plate retreats, and
A dial-type button lock characterized in that a guide groove for rotating the latch in the locking direction is provided on the case side.