JPS5920533Y2 - letter combination lock - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a combination lock.

With conventional combination locks, after unlocking the character combination lock that locks the door and opening the door, the character combination lock opens the door again. The problem was that the latch could not be retracted from the front surface even if it hit the door, making it impossible to close the door.

The present invention aims to solve the problems of conventional combination locks, and to provide a combination lock that can shift from the door open lock state to the closed door lock state by closing the door.

Embodiments of the present invention illustrated in the drawings will be described below.

Structure of the invented lock The main components of the lock of the present invention are as follows.

Outer cylinder 1, outer ring 5, inner cylinder 2, latch holder 6, rotary plate 3, dial plate 8, knob 4 ■As shown in Figures 2 and 3, a decorative ring 7 is fitted on the outer periphery of the outer cylinder 1. is inserted, contacts the door 21, and snaps the snap ring 1.
5, fix the outer cylinder 1 to the door 21.

(2) On the inner periphery of the outer cylinder 1, as shown in FIG. 5, the knob 4 rotary plate 3 and the inner cylinder 2 are integrally connected with screws 14 and fitted.

Further, a latch holder 6 is fitted into the rear end of the outer cylinder 1.

A dial plate 8 is integrally held between the knob 4 and the rotating plate 3.

Further, an outer ring 5 is fitted to the outer periphery of the inner cylinder 2, and its small diameter portion 5a is rotatably locked to the stepped portion 2a of the inner cylinder 2.

Further, a driving claw 18 is integrally fixed to the small diameter portion 3a of the rotary plate 3.

Further, a driven pawl 19 is integrally fixed to the small diameter portion 5a of the outer ring 5.

The small diameter portions 3a and 5a of the rotary plate 3 and the outer ring 5 form a polygon with the same number of angles as the number of the dial member, and the click bar 12 is fixed to the outer cylinder 1 as shown in FIG. , 12, the opposing sides are suppressed.

The latch 9 is inserted into the latch holder 6, and the elongated hole 9b is inserted into the latch holder 6.
The latch rotation shaft 10 is inserted through the latch pole holder 6.

The latch holder 6 is fixed to the outer cylinder 1 with mounting screws 13.

11 is a latch spring. In addition, the inner cylinder 2 and the outer ring 5 have notched grooves 17 and 20 located on the same plane as the latch 9 when unlocking.
is cut out.

Description of action The operation of the present invention will be explained below.

■To unlock, turn the knob 4 clockwise at least twice, and align the mark on the decorative ring 7 with the designated number on the dial 8.

As a result, the cutout groove 17 of the outer ring 5 is located on the same plane as the latch 9.

When the knob 4 is thus rotated to the right, the driving claw 18 integrated with the rotating plate 3 pushes the driven claw 19 integrated with the outer ring 5, and the outer ring 5 is rotated.

The small diameter portion 5a of the outer ring 5 and the small diameter portion 3a of the rotating plate 3 are pressed together from both sides by the click springs 12 as shown in FIG. 11, so even if the rotating plate 3 is reversed, the outer ring 5
remains at the original position, and only the rotary plate 3 is reversed.

■Next, when you pinch the knob 4 and flip it to the left, only the inner cylinder 2, which is integrated with the rotary plate 3, will flip over as described above, and when the knob 4 is aligned with the designated number on the dial 8, a notch in the inner cylinder 2 will be turned over. Groove 20 and latch 9 are located in the same plane.

(2) When the door 21 is opened, the tip of the latch 9 collides with the receiver 16.

Then, the latch 9 rotates around the latch rotation shaft 10, and the rear end of the latch 9 engages with the notched grooves 17 and 20 of the outer ring 5 and the inner cylinder 2.
Get into it.

Thus, the tip of the latch 9 is retracted from the front surface, allowing the door to be opened.

(2) Next, when the door 21 is closed in the open/locked state, the inclined portion 9a of the latch 9 collides with the receiver 16, the elongated hole 9b is guided by the latch rotation shaft 10, and the latch 9 is retracted from the front surface 1.

In this way, the character combination lock of the present invention can keep the door locked even when the door is opened and locked.

(2) In the lock of the present invention, dummy grooves 17 a and 20 a are provided in the inner cylinder 2 of the outer rung 5 in parallel with the notch grooves 17 and 20 .

When the knob 4 is rotated digitally in an attempt to illegally unlock the lock from the outside, the rear end of the latch 9 falls into the dummy grooves 17a and 20a due to the pressing force of the click spring 12, and the knob 4 is rotated. The specified number cannot be deciphered.

Therefore, by providing the dummy grooves 17a and 20a, unauthorized unlocking can be prevented.

Effects of this invention.

With conventional letter combination locks, the latch 9 remains protruding from the Freon I surface even when the door is closed, making it impossible to close the door.However, with this invention, the latch 9 remains in the same state even when the door is locked. When the door is closed, the latch 9 is retracted from the front surface, and the door can be closed and locked.

[Brief explanation of the drawing]

Figure 1: An exploded perspective view of the lock of the present invention, Figure 2: A perspective view of the lock of the present invention, decorative ring 7, and door 21, Figure 3: A perspective view of the lock of the present invention and the snap ring 15, Figure 4: Figure 5: A cross-sectional view of the lock of the present invention, Figure 6: A front view of the lock of the present invention, Figure 7: Left side view of Figure 6, Figure 8: Figure 6. Right side view, Figure 9: Plane sectional view when the lock of the present invention is installed, Figure 10: XX sectional view of Figure 9, Figure 11: Explanatory diagram of the action of the click spring 12, 1: Outer cylinder, 2: Inner cylinder, 3: Rotating plate, 4: Knob, 5: Outer ring, 5a: Small diameter part, 6: Latch holder, 7: Decorative ring, 8: Dial plate, 9: Latch, 9a: Inclined part, 9b: Length Hole, 10: Latch rotation axis,
11. Latch spring, 12: Click spring, 13: Latch holder installation screw, 14. Knob installation screw, 15 varnish nut spring, 16: Receptacle, 17: Notch groove of outer ring 5,
17a, dummy groove, 18: driving claw of rotating plate 3, 19: driven claw of outer ring 5, 20: notch groove of inner cylinder 2, 20a:
Dummy groove, 21: Door.

Claims (1)

[Claims for Utility Model Registration] ■Knob 4, dial plate 8, rotary plate 3, inner tube 2 in outer tube 1
A latch 9 is housed in the rear end of the outer cylinder 1, a latch rotation shaft 10 is inserted into the elongated hole 9b of the latch 9, and the outer ring 5 is connected to a rotating plate. 3 and the inner cylinder 2, its small diameter part 5a is in contact with the small diameter part 3a of the rotary plate 3, and is inserted into the step part 2a of the inner cylinder 2 so as to be rotatably surrounding the inner cylinder 2. The plate 3 has a driving claw 18 that drives the driven claw 19 of the outer ring 5, and the inner cylinder 2 and outer ring 5 have notched grooves 17 and 20 into which the latch 9 is inserted when unlocking. When the dial 8 is rotated to the required number, the notch groove 20 of the inner cylinder 2 and the outer ring 5
The cutout groove 17 of the latch 9 is flush with the latch 9, and as a result, the latch 9 rotates around the latch rotation wheel 10 and is retracted from the front plane, and when the latch 9 opens and locks the door, This combination lock is characterized in that when the door is closed, the sloped part 9a on the back side comes into contact with the receiver 16, and the elongated hole 9b is accommodated from the front side using the latch rotation shaft 10 as a guide. (2) The combination lock according to claim 1, which is a registered utility model, in which dummy grooves 17a and 20a, which are shallower than the notch grooves 17 and 20, are cut out in the inner cylinder 2 of the outer ring 5 to prevent unauthorized unlocking.