JPH0345496Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a numbered lock whose number can be arbitrarily selected, and is used in the field of manufacturing numbered locks.

(Prior Art) Conventionally, numbered locks have been known in which the core shaft can be pulled out by a predetermined length from the barrel and the numbering ring is double-layered inside and outside, so that the number can be arbitrarily selected. , widely used.

(Problems to be Solved by the Invention) However, in the conventional technology, it was necessary to use a pin to pull out the core shaft, and operations (particularly positioning for inserting the pin) were complicated.

(Means for solving the problem) The number lock of this invention has a lock rod attached to one side of the barrel, a number ring fitted on the outside, and
The fact that the core shaft is fitted inside is the same as in the conventional case.

A locking piece that slides in a direction perpendicular to the core shaft and a cam piece for sliding the locking piece are attached to the core shaft. They are made to protrude alternately from both sides of the shaft. The latching piece is preferably biased in one direction, and is latched in the latching groove of the shaft cylinder during normal use. In addition, the vertical position of the hooking piece is
When the lock lever is pulled up for unlocking, it is placed in a position corresponding to the locking groove.

A spacer with a height equivalent to a lifting dimension of the lock rod is provided on one side of the bottom of the lock support hole provided in the core shaft, and a notch corresponding to the spacer is provided at the lower end of the lock rod. There is.

That is, this invention provides a lock in which a lock lever is attached to one side of the barrel, a number ring is fitted on the outside of the barrel, and a core is fitted inside the barrel. A latching groove is provided on the inner wall of the cylinder, and a latching piece that latches with the latching groove is attached to the core shaft so as to be slidable in a direction perpendicular to the axis of the core shaft. A cam piece for sliding the latch piece is attached to be slidable in the axial direction, and the position of the latch piece is changed to the position of the locking latch provided at the base of the lock rod when the lock piece is pulled up and rotated 180 degrees. A spacer with a height equivalent to the lifting dimension of the lock is provided on one side of the bottom of the lock support hole provided in the core shaft, and a spacer with a height equivalent to the lifting dimension of the lock is provided at a position that corresponds to the stop groove and can be engaged. teeth,
This is a number lock provided with a notch that corresponds to and engages with the spacer when the lock is locked. Further, the locking groove of the shaft cylinder is composed of a deep groove and a continuous shallow groove below the deep groove, or the locking piece is a numbered lock that is biased toward the locking groove of the shaft cylinder.

(Function) In this invention, the latching piece of the core shaft normally engages with the latching groove of the shaft cylinder, and has the function of fixing the core shaft of the shaft cylinder. Then, when the lock lever is rotated 180 degrees after unlocking, the locking groove of the locking lever and the above-mentioned latch piece face each other, so as the cam piece moves, the latch piece enters the locking latch groove. , the fixation between the core shaft and the barrel is released, and the core shaft can be pulled down.

In the above, the lock rod rotated by 180 degrees is supported on the spacer of the lock support hole, and the locking piece smoothly enters into the locking groove. Therefore, according to this invention, the core shaft can be easily pulled out only by operating the cam piece, and the above-mentioned conventional problems are solved.

Examples of this invention will be described below with reference to the drawings.

(Embodiment) A top plate 2 is connected to one end of the shaft tube 1, and a groove 4 for inserting the base of an inverted J-shaped lock lever 3 is provided on one side of the shaft tube 1. The plate 2 is provided with an insertion hole 5 for a lock rod 3. Further, three number rings 6 are fitted on the outside of the shaft cylinder 1. The number ring 6
It consists of an outer ring 6a with a number displayed on its outer surface, and an inner ring 6b with a hooking collar 7 protruding from the inside, and the inner and outer rings are detachably hooked to each other.

As for the locking structure of the inner and outer rings, a locking convex portion 8 corresponding to the number display is provided in an annular shape at the inner lower part of the outer ring 6a, and the locking convex portion 8 and the inner ring 6
It has a structure in which a notch 9 provided at the lower part of b is hooked (Fig. 4). Moreover, the inner lower part of the outer ring and the outer lower part of the inner ring can also be polygonal (decagonal). Note that the vertical dimension h of the hooking portions of the inner and outer rings corresponds to the moving distance of the core shaft 10, which will be described later.

A core shaft 10 is fitted inside the shaft cylinder 1. A locking piece mounting groove 11 is provided at a predetermined position of the core shaft 10 in a direction perpendicular to the axis.
1 has a latch piece 12 slidably attached thereto, and the latch piece 12 is biased to one side by a spring 13 (FIG. 3). The core shaft 10 is provided with a vertical hole 14 along its axis, and a cam piece 15 for sliding the locking piece 12 is attached to the vertical hole 14 so as to be vertically movable. 15 is urged downward by a spring 16. Further, the cam piece 15 is connected to the through hole 1 of the locking piece 12.
2b, and the operation recess 15a of the cam piece 15 is located at one side edge 1 of the through hole 12b of the locking piece 12.
It is attached to 2c.

In normal times, the hooking piece 12 has one end 12
a is the deep groove part 1 of the locking groove 17 provided inside the shaft cylinder 1
It is hung on 7a. Further, one side edge 12c of the locking piece 12 is engaged with the operation recess 15a of the cam piece 15.

The vertical position of the locking piece 12, that is, the position of the mounting hole 11, corresponds to the position of the locking groove 18 when the lock lever 3 is pulled up to unlock. A spacer 21 having the same height as the lifting distance of the lock rod 3 is provided on the outside of the bottom of the support hole 20 at the base of the lock rod 3 provided in the bottom plate 19 of the core shaft 10.
is provided in a protruding manner so that when the lock rod 3 is rotated 180 degrees, the locking groove 18 of the lock rod 3 and the locking piece 12 are correctly opposed to each other. Further, a notch 22 corresponding to the spacer 21 is provided on one side of the lower end of the lock rod 3, so that the spacer 21 does not interfere with locking. 17b in the figure
is a shallow groove portion of the locking groove 17, and its vertical dimension B is greater than or equal to the vertical dimension h of the locking portions of the inner and outer rings 6a, 6b. Reference numeral 23 denotes a locking piece passage groove provided in the shaft cylinder 1.

Next, the operation of the number lock shown in the above embodiment will be explained.

When you turn the number ring 6 and match the specified number,
Since the notches 24 of each inner ring 6b are aligned on the outside of the lock rod 3, the lock rod 3 can be pulled up and its tip taken out from the recess 25 of the top plate 2, and the lock can be opened.
Next, when the lock rod 3 is pulled up and rotated 180 degrees, the lower end of the lock rod 3 is supported by the spacer 21, and one of the locking grooves 18 of the lock rod 3 (in the embodiment, the lowest one) is supported by the spacer 21. ) faces the locking piece 12. Then, when the cam piece 15 is pushed upward, the latch piece 12 moves to the position shown in FIG.
2 enters the locking groove 18 of the lock rod 3, and the engagement between the engagement piece 12 and the deep groove 17a of the engagement groove 17 of the barrel 1 is released. Therefore,
By pulling down the core shaft 10 as shown by the arrow in FIG. 7, the distance between the lower surface of the top plate 2 and the upper surface of the bottom plate 19 can be increased (as shown by the chain line in FIG. 7). In this embodiment, a shallow groove 17b is provided below the deep groove 17a, and one end of the hooking piece 12 is hooked to the shallow groove 17b when the core shaft 10 is pulled out.
The downward dimension of the core shaft 10 is regulated by the dimension of the shallow groove portion 17b, and there is no fear that the core shaft 10 will be completely pulled out. Also, the vertical dimension B of the shallow groove portion 17b
is larger than the vertical dimension h of the hooking portions of the inner and outer rings 6a, 6b in FIG. It is larger than the h.

Therefore, in this state, each number ring 6
The locking of the inner and outer rings can be sequentially released by shifting each inner and outer ring up and down, and an arbitrary unlocking number can be selected. After selecting the number, if the core shaft 10 is returned to its normal state and the cam piece 15 is returned to its original position (it will return automatically by the spring 16), the latch piece 2 will also automatically return to its original position and be latched. Since it is engaged with the deep groove part 17a of the stop groove 17,
After that, it can be used as a regular numbered lock.

In the locked state, the locking piece 12 is obstructed by the locking rod 3 and cannot be moved, so the core shaft 10 cannot be pulled out and the number exchange cannot be performed.

(Effect of the invention) According to this invention, the fixation between the shaft cylinder and the core shaft is released by sliding the locking piece, so that the fixation between the two can be released only by operating the cam piece. I can do it. In addition, since a spacer is provided at the bottom of the lock support hole of the core shaft, the vertical position of the lock rod remains stable while it is pulled up. Since the latch piece is opposed to the locking groove in this position, the latch groove and the latch piece can be aligned very easily.

This effect corresponds to the experience that when extracting the core shaft of this type of lock, the lock rod is generally operated with the lever pulled up, and is effective in improving ease of use.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the embodiment of this invention, Fig. 2 is a bottom view, Fig. 3 is a cross-sectional view, Fig. 4 is a perspective view showing the locking structure of the inner and outer rings, and Fig. 5
The figure is an enlarged exploded perspective view showing the barrel and the core shaft, FIG. 6 is a plan view of the core shaft, and FIG. 7 is a sectional view when the number is changed. 1...Shaft cylinder, 3...Lock rod, 6...Number ring,
10... Core shaft, 12... Latching piece, 15... Cam piece, 17... Latching groove, 18... Locking latch groove, 2
1... Spacer, 22... Notch.

Claims (1)

[Claims for Utility Model Registration] 1. A lock in which a lock rod is attached to one side of the barrel, a number ring is fitted on the outside of the barrel, and a core shaft is fitted inside the barrel. A retaining groove is provided on the inner wall of the shaft cylinder, and a retaining piece that engages with the retaining groove is attached to the core shaft so as to be slidable in a direction perpendicular to the axis of the core shaft. A cam piece for sliding the locking piece is installed in the core shaft so as to be slidable in the axial direction, and the position of the locking piece is set at the base of the lock when the lock is pulled up and rotated 180 degrees. A spacer with a height equivalent to the lifting dimension of the lock rod is provided on one side of the bottom of the lock support hole provided in the core shaft, and the spacer is positioned so that it can be engaged with the locking groove. The lower end of the lock is provided with a notch that corresponds to and engages with the spacer when the lock is locked. A numbered lock according to claim 1 of the patent registration claim. 3. The numbered lock according to claim 1 of the utility model registration claim, in which the locking piece is biased toward the locking groove of the barrel. 4. The number lock according to claim 1 of the utility model registration, in which the cam piece is biased downward. 5. The numbered lock according to claim 1 of the utility model registration claim, in which the spacer is located outside the bottom of the lock lever support hole.