JP4226885B2 - Cylinder lock for shutter door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shutter door cylinder lock incorporated in a shutter of a building and other doors.
[0002]
[Prior art]
The cylinder lock for the shutter door consists of a rectangular shallow box-shaped case body that is attached to the shutter door, and a rotary plug (inner cylinder) that is operated by a plate key and a cylinder (outer cylinder) that rotatably stores the rotary plug. It is common to comprise a rotor and a rack tooth type lock lever linked so as to move forward and backward in conjunction with the inner end of the provided cylinder (see, for example, Patent Document 1).
[0003]
The conventional cylinder lock described above is configured such that a tumbler pin is incorporated in a rotary plug, and when the plate key is inserted, the rotary plug is rotatable by being set together by the side edges in the width direction of the key. Normally, rugged pins are formed on both sides (edges) of the plate key, and the tumbler pin operates according to the shape of the rugged shape. Since the thickness is as thin as 1 to 2 millimeters, it has various functional problems. As a prior art for solving this problem, for example, Patent Document 2 discloses a method of operating a tumbler pin by forming a dimple on a plate surface of a key using a large surface of the plate key. Yes.
[0004]
[Patent Document 1]
Utility Model Registration No. 3020664 (Fig. 6)
[Patent Document 2]
JP 2000-314250 A (6th paragraph, FIG. 1)
[0005]
A conventional cylinder lock shown in Patent Document 2 will be described with reference to a structural diagram shown in FIG.
[0006]
As shown in FIG. 6, this conventional cylinder lock 60 is provided with a pair of left and right side bars (stopper members) 68, 68 in a diameter direction passing through the central axis of a rotary plug 62, and a tumbler pin (lock pin) 67 is respectively spring-loaded. 66 is energized and provided on the opposite side of the key hole 64 in two rows on the left and right. The key hole 64 is provided at an eccentric position off the center. A locking recess 65 is provided on the inner peripheral surface of the cylinder (fixed case) 61, and the locking protrusions 69 at the tips of the side bars 68, 68 are locked to the locking recess by the bias of the leaf spring 63. ing. Rotational restraint of the rotary plug 62 with respect to the cylinder 61 is performed at two positions on the left and right.
[0007]
[Problems to be solved by the invention]
As described above, in the conventional structure shown in FIG. 6, the key operation is difficult to perform smoothly and easily because the key hole is in a position deviated from the center to one side (first problem).
[0008]
Although a large space can be secured on one side where the key hole is biased to one side, the two rows of tumbler pins are used only on one side of the plate key, and have a wide variety of high performance from the viewpoint of picking prevention and crime prevention. Realization of the combination cannot be expected (second problem).
[0009]
The present invention makes it possible to smoothly and easily perform operations such as locking and unlocking the shutter door with a plate key, and allows a configuration in which tumbler pins are arranged side by side in the front and rear and top and bottom, and the number of types of keys can be increased. The purpose is to set.
[0010]
[Means for Solving the Problems]
A first cylinder lock for a shutter door according to the present invention includes a case main body 10 attached to the shutter door, and a rotary plug 20 operated by a plate key and a cylinder 30 for rotatably storing the rotary plug. Cylinder lock for shutter door provided with a rotor 11 coupled to the rotary plug 20 at the inner end of the cylinder and a lock lever 12 that meshes with the teeth of the rotor and moves forward and backward from both ends of the case body 10 in the longitudinal direction. The rotary plug 20 is provided with a U-shaped slide bar 21 provided with a stopper 21a for locking at the tip so as to protrude from the peripheral side of the plug, and a tumbler pin 22 for restricting the forward / backward movement of the slide bar. The two U-shaped support pieces 21b and 21c of the slide bar 21 are opposed to the left and right with the key hole 31 as the center. At least one or a plurality of engagements are released so as to allow the slide bar 21 to move forward and backward when the dimples formed on the plate surface are opposed to both the front and back surfaces of the plate key inserted into the key holes in the both support pieces. The tumbler pins 22 are arranged separately on the left and right sides.
[0011]
With the above configuration, operations such as locking and unlocking the shutter door with the plate keys can be easily performed, and many types of keys can be set.
[0012]
The second shutter door cylinder lock according to the present invention is characterized in that the tumbler pins 22 are arranged in two rows in the front-rear direction and the upper-lower direction on each side.
[0013]
With the above configuration, eight tumbler pins can be arranged on the front and back surfaces of the plate surface, with four on the plate key.
[0014]
The third shutter door cylinder lock according to the present invention is characterized in that the tumbler pins 22 are arranged with the interval and the opposed position being arranged.
[0015]
With such a configuration, more arrangements and arrangements of tumbler pins can be set.
[0016]
A fourth shutter door cylinder lock according to the present invention is characterized in that the tumbler pins 22 arranged opposite to each other on the left and right are defined to have different heads 22a.
[0017]
With the configuration described above, it is possible to set various types of tumbler pins by changing only the head.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
[0019]
1 to 5 are views for explaining an embodiment of the present invention. FIG. 1 is a plan view of the entire shutter door cylinder lock of the present invention, and FIG. 2 is an enlarged cross-sectional view taken along line AA in FIG. FIG. 3 and FIG. 3 are explanatory views of the main part of the cylinder lock, where (a) is an elevational view and (b) is a cross-sectional view taken along the line BB. 4A is a side view of the rotary plug, FIG. 4B is a plan view of the plate key, FIG. 5 is an explanatory view showing main parts, FIG. 4A is a slide member, and FIG. 4B is a tumbler pin. FIG.
[0020]
First, the entire shutter door cylinder lock will be described with reference to FIGS. In the figure, reference numeral 10 denotes a flat rectangular case body, and notches 10 'and 10' are formed on the short sides on both sides thereof. Inside the case body 10, a rotor 11 and a cylinder 30 on which a rotary plug 20 is rotatably accommodated are installed in a central seat, and the case 11 is engaged with the teeth of the rotor across the rotor 11. Two lock levers 12 and 12 are provided so as to protrude outward from the short-side cutouts 10 'and 10'.
[0021]
When the plate key 1 is inserted into the key hole 31 of the rotary plug 20 built in the cylinder 30, the rotary plug 20 becomes free. Therefore, when the rotary plug is turned in the locking direction or the unlocking direction by operating the plate key, the rotor 11 is moved. At the same time, it rotates in the same direction. Due to the rotation of the rotor, the lock levers 12 and 12 meshing with the gears of the rotor slide simultaneously and protrude in the extending direction from the short side cutouts 10 ′ and 10 ′ of the case body 10, or retract in the shortening direction. To do. The shutter door is locked or unlocked with a keypad (not shown) connected to the tip of each of the lock levers 12 and 12 as the lock levers 12 and 12 move back and forth. Such locking and unlocking operation of the shutter door can also be performed by the knob 35 provided at the inner end of the plug 20 from the inside of the door.
[0022]
Next, the cylinder lock provided in the case main body 10 will be described with reference to FIGS. The cylinder lock includes a rotary plug 20 operated by a plate key and a cylinder 30 in which the rotary plug is rotatably stored. The rotary plug 20 has a U-shaped slide bar 21 provided with a stopper 21a for locking at the tip so as to protrude from a part of the peripheral side thereof, and a plurality of tumblers arranged so as to restrict the forward and backward movement of the slide bar. And a pin 22. The rotary plug 20 is provided with a key hole 31 for inserting a key at the upper end thereof. The key hole 31 has a rectangular shape when viewed from above, and the position thereof is formed as a vertical hole penetrating vertically in the center.
[0023]
As shown in FIGS. 3 and 5 (a), the slide bar 21 is provided with two supporting pieces 21b and 21c facing each other with a U-shaped member having a certain width (w) and thickness (t). Then, the stopper 21a for locking is provided at the outer end (tip) of the U-shaped part. The two support pieces 21b and 21c face each other with a gap (s), and a locking hole 24 through which the tumbler pin 22 is slidably inserted is formed in each support piece. In the example shown in the drawing, such locking holes 24 are preferably formed in two rows at both the front and rear and upper and lower sides, with four on one side and a total of eight on both sides. However, the number, arrangement, interval, and the like of the locking holes 24 have various types of combinations, and therefore should not be limited only to the illustrated example.
[0024]
As shown in FIGS. 3 and 5B, the tumbler pin 22 is formed by integrally forming a conical head portion 22a and a trunk portion 22b via a stem portion (thin shaft portion) 22c, and a spring receiver 22d at the rear portion. Have It is preferable that the diameter (d) of the head part 22a and the trunk | drum 22b is the same diameter. Moreover, although the length of the trunk | drum 22b of each tambou pin is constant, it is preferable to prescribe | regulate the length of the head 22a to a different dimension.
[0025]
The rotary plug 20 is provided with a slide bar accommodating hole 26 for accommodating the slide bar 21 and a tumbler pin accommodating hole 28 for accommodating the dumbler pin 22. The slide bar receiving hole 26 has an opening 26a where the stopper 21a for locking the slide bar faces, and guide portions 26b, 26c formed by narrow groove holes into which the two support pieces 21b, 21c are fitted to allow slide guide. It becomes. When the slide bar 21 is accommodated in such an accommodation hole 26, the slide bar 21 is guided by the guide portions 26b and 26c in the form that the two support pieces 21b and 21c enclose the key hole 31 in the middle, and slides in the radial direction. Can do. The spring 25 is biased to the slide bar 21 and the slide bar 21 is pushed outward by the spring force of the spring, so that the locking stopper 21a at the tip can be locked to the locking recess 33 on the inner wall of the cylinder 30.
[0026]
The tumbler pin accommodation holes 28 are provided in a direction perpendicular to the slide bar accommodation holes 26, and the heads 22 a are inserted into the respective accommodation holes 26 inwardly at the center, and a spring 29 is biased to the rear end. The spring 29 is interposed in a compressed state between the rear end portion 22d of each tumbler pin 22 and the spring receiving plate 27 fitted in the opening of the receiving hole. In this way, since the tumbler pins 22 are each pushed inwardly by spring pressure, the head portion 22a at the front end faces the keyhole 31 and is pressed against the plate surface when the key is inserted. .
[0027]
The plate key 1 has a cross-sectional shape so that it can be fitted into the key hole 31, and dimples (recesses) 4, 5 are formed on the front surface 2 and the back surface 3 at portions corresponding to the arrangement of the tumbler pins 22. Is formed. Such dimples 4 and 5 are arranged on the front surface 2 and the back surface 3 of the plate key 1 in the front-rear direction and the upper-lower direction. It is desirable to define the depths of the dimples 4 and 5 to be different from each other. Further, it is preferable that the corresponding positions of the dimples 4 and 5 on the front surface and the back surface are deviated. However, even if the corresponding positions are matched, there is no difference.
[0028]
Next, the operation of the cylinder lock will be described with reference to FIG.
[0029]
FIG. 3 shows a state at the time of unlocking. In the state where the cylinder lock is locked, the slide bar 21 is pushed by the spring 25, and the stopper (projection piece) 21a at the tip is fitted and locked in the locking recess 33 on the inner wall of the cylinder 30, and at the same time, each tumbler pin 22 is The body portions 22 b are pressed by the springs 29 and are fitted into the locking holes 24 of the support pieces 21 b and 21 c of the slide bar 21. Therefore, the slide bar 21 is prevented from sliding backward by the tumbler pin 22 and is also prevented from rotating in the rotational direction by the locking of the stopper 21 a and the locking recess 33.
[0030]
Next, when the plate key 1 is pushed into the key hole 31 of the rotary plug 20 and set to a predetermined position from this locked state, each tumbler pin 22 has the head 22a of the tumbler pin 22 on the front surface 2 and the back surface 3 of the plate key. The spring 29 is compressed and retracted by the action of each taper, and each retracted position is defined by the dimples 4 and 5 at the set position. At this time, the body portion 22b of the tumbler pin 22 is engaged with the locking hole of the slide bar 21. Since the stem portion 22c comes to face the locking hole 24 instead of being removed from the slide bar 21, the restriction on the backward movement of the slide bar 21 is released. When the plate key 1 is rotated so as to be twisted in the unlocking state in the released state, the stopper 21a is removed from the locking recess 33 by the action of the cam by the taper. When the plug 20 is rotated by a predetermined angle by operating the plate key 1, the rotor 11 is rotated together with the plug to move the lock bars 12 and 12 in the retracted direction, so that the shutter door is unlocked.
[0031]
If the key is incorrect when the plate key 1 is inserted into the key hole 33, for example, if one of the dimples has a different depth or position, the single tumbler pin is connected to the head or torso. Needless to say, the shutter door cannot be unlocked because any one of the portions remains fitted and locked in the locking hole 24 of the slide bar 21 so that the constraint on the slide bar is not released.
[0032]
【The invention's effect】
According to the cylinder lock for the shutter door according to the present invention, the keyhole can be provided at the center of the rotary plug without being biased, so that the operation of the cylinder lock by the plate key can be performed easily and smoothly. By arranging the tumbler pins on the left and right using both the front and back sides of the key, it is possible to easily set the key type more than twice as much as before. In addition, it is possible to provide a high-quality cylinder lock for a shutter door that has few components and parts, can be simplified, requires a small number of processing steps, and is highly durable.
[Brief description of the drawings]
FIG. 1 is a plan view of a shutter door cylinder lock according to the present invention with a cover removed.
FIG. 2 is an enlarged cross-sectional view taken along line AA in FIG.
FIG. 3 is an enlarged view of a main part of the cylinder lock of the present invention, in which (a) is a longitudinal front view and (b) is a cross-sectional plan view taken along the line BB.
4A is a side view of a rotary plug, and FIG. 4B is a perspective view of a plate key.
FIGS. 5A and 5B show components of each main part of the present invention, in which FIG. 5A is a perspective view of a slide bar and FIG. 5B is a tumbler pin.
FIG. 6 is an explanatory view showing a conventional cylinder lock.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Plate key 10 Case main body 11 Rotor 12 Lock lever 20 Rotating plug 21 Slide bar 21a Stopping stopper 21b, 21c Stopper 22 Tumbler pin 24 Locking hole 26 Slide bar receiving hole 28 Tumbler pin receiving hole 30 Cylinder 31 Key hole 33 Locking recess

Claims (4)

A case main body (10) attached to the shutter door is provided with a rotary plug (20) operated by a plate key and a cylinder (30) for rotatably storing the rotary plug, and the rotary plug is provided at an inner end of the cylinder. A shutter door cylinder lock provided with a rotor (11) coupled to (20) and a lock lever (12) which meshes with the teeth of the rotor and moves forward and backward from both ends of the case body (10). And a U-shaped slide bar (21) provided with a stopper (21a) and a locking hole (24) at the tip so that the rotary plug (20) protrudes and protrudes from the peripheral side of the plug, and the slide stem portion for restricting the bar forward and backward movement of the tumbler pin (22) having a (22c) provided two support piece (21b, 21c) of the U-shaped of the slide bar (21) the key Together we are opposed to the left and right to the center (31), wherein with the locking hole to match this both support piece is formed on the plate surface to face the both sides of the plate key plugged into the keyhole to the dimple A shutter door characterized in that at least one or a plurality of the tumbler pins (22) that are disengaged so as to allow the stem portion to face and allow the slide bar (21) to move forward and backward are arranged separately on the left and right sides. Cylinder lock.   2. The cylinder lock for a shutter door according to claim 1, wherein the tumbler pins (22) are arranged on each side in two rows in front and rear and top and bottom.   The shutter door cylinder lock according to claim 1 or 2, wherein the tumbler pins (22) are arranged with an interval and an opposed position being arranged.   The shutter according to any one of claims 1 to 3, wherein the tumbler pins (22) arranged opposite to each other on the left and right sides have respective heads (22a) defined to have different lengths. Cylinder lock for door.

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