JP2004190406A - Cylinder lock for shutter door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylinder lock for a shutter door, which enables the locking/unlocking operation of the shutter door to be reasonably and smoothly performed by using a plate key, and enables the keys to be set to be of great variety. <P>SOLUTION: The above problem is solved by constituting the cylinder lock as follows: a slide bar equipped with two U-shaped supporting pieces is built into a rotating plug of the cylinder lock; a key hole is provided in the central part of the plug; the two supporting pieces are arranged on both the sides of the key hole serving as a center; dimples, different in arrangement and depth, are provided on both the faces of the plate key; and a tumbler pin is operated from the side of both the faces. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a shutter door cylinder lock incorporated in a shutter of a building or other doors.
[0002]
[Prior art]
The shutter door cylinder lock consists of a rotating plug (inner cylinder) operated by a plate key and a cylinder (outer cylinder) that rotatably stores this rotating plug in a rectangular shallow box-shaped case body attached to the shutter door. Generally, a rotor is provided at the inner end of the cylinder and a rack-tooth-type lock lever linked to move forward and backward in conjunction with the rotor (for example, see Patent Document 1).
[0003]
The above-described conventional cylinder lock is configured such that a tumbler pin is incorporated in a rotary plug, and when a plate key is inserted, the rotary plug is rotatable by being simultaneously set by side edges in the width direction of the key. Normally, tumbler pins operate according to the shape of the unevenness on both sides of the board key (edge), but if the width of the board key is large, the space is limited and the board key board Since the thickness is as thin as 1 to 2 mm, it has various problems in terms of function. As a conventional technique 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 wide surface of a plate key. I have.
[0004]
[Patent Document 1] Japanese Utility Model Registration No. 30262064 (FIG. 6)
[Patent Document 2] Japanese Patent Application Laid-Open No. 2000-314250 (6th paragraph, FIG. 1)
[0005]
A conventional cylinder lock disclosed in Patent Document 2 will be described with reference to a structural diagram shown in FIG.
[0006]
As shown in FIG. 6, the conventional cylinder lock 60 has a pair of left and right sidebars (stopper members) 68, 68 in a diametric direction passing through a center axis on a rotary plug 62, and a tumbler pin (lock pin) 67 with a spring. 66 are 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 projection 69 at the tip of the side bars 68, 68 is locked in the locking recess by the urging of the leaf spring 63. ing. The rotation of the rotary plug 62 with respect to the cylinder 61 is restricted at two places on the left and right.
[0007]
[Problems to be solved by the invention]
As described above, in the conventional structure shown in FIG. 6, it is difficult to operate the key smoothly and easily because the key hole is located at a position deviated to one side from the center (first problem).
[0008]
Although the key hole is biased to one side, a large space can be secured on one side, but the two rows of tumbler pins are used only for one side of the board key, and various types of high performance and high performance from the viewpoint of picking prevention and crime prevention It cannot be expected to achieve the alignment (second problem).
[0009]
The present invention makes it possible to smoothly and easily perform operations such as locking and unlocking of a shutter door by a plate key, and a configuration in which tumbler pins are arranged in front and rear and up and down can be arranged left and right. 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 body 10 attached to a shutter door, a rotary plug 20 operated by a plate key, and a cylinder 30 for rotatably storing the rotary plug. A cylinder lock for a shutter door provided with a rotor 11 connected 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 in the longitudinal direction from both ends of the case body 10. In the above, the rotary plug 20 is provided with a U-shaped slide bar 21 having a locking stopper 21a at the tip so as to protrude and retract from the peripheral side of the plug, and a tumbler pin 22 for restricting the slide bar from moving forward and backward. The two U-shaped supports 21b and 21c of the slide bar 21 are opposed to each other right and left around the keyhole 31. At least one or a plurality of disengagement is performed to allow the slide bar 21 to move forward and backward when the front and back surfaces of the plate key inserted into the keyholes on both support pieces match the dimples formed on the plate surface. Characterized in that the tumbler pins 22 are arranged separately on the left and right sides.
[0011]
With the above configuration, operations such as locking and unlocking of the shutter door by the plate key can be easily performed, and many types of keys can be set.
[0012]
The second cylinder lock for shutter doors according to the present invention is characterized in that the tumbler pins 22 are arranged on one side of each of the front and rear and up and down two rows.
[0013]
According to the above configuration, eight tumbler pins can be arranged on the front and back sides of the plate key, four by four.
[0014]
A third shutter door cylinder lock according to the present invention is characterized in that the tumbler pins 22 are arranged such that the interval and the facing position are different.
[0015]
With such a configuration, the arrangement and arrangement of the tumbler pins can be further set.
[0016]
The fourth cylinder lock for a shutter door according to the present invention is characterized in that the tumbler pins 22 disposed to face each other on the left and right have different heads 22a of different lengths.
[0017]
According to the above configuration, it is possible to set more 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 one embodiment of the present invention. FIG. 1 is a plan view of an entire cylinder lock for a shutter door 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 a main part of the cylinder lock. FIG. 3A is an elevation view, and FIG. 3B is a cross-sectional view taken along line BB. 4 (a) is a side view of the rotary plug, FIG. 4 (b) is a plan view of the plate key, FIG. 5 is an explanatory view showing essential parts, (a) is a slide member, and (b) is a tumbler pin. It is a perspective view of.
[0020]
First, the entire cylinder lock for shutter door will be described with reference to FIGS. In the figure, reference numeral 10 denotes a flat rectangular case main body, and cutouts 10 'and 10' are formed in short sides on both sides thereof. Inside the case body 10, a rotor 30 and a cylinder 30 which is rotatably housed on the rotor 11 and which is rotatably accommodated thereon are installed on a central seat, and mesh with the teeth of the rotor with the rotor 11 interposed therebetween. Two lock levers 12, 12 are provided so as to protrude outward from the notches 10 ', 10' on the short side in the direction.
[0021]
When the plate key 1 is inserted into the key hole 31 of the rotary plug 20 provided in the cylinder 30, the rotary plug 20 becomes free. When the rotary plug is turned in the locking direction or the unlocking direction by operating the plate key, the rotor 11 is rotated. At the same time, it rotates in the same direction. Due to the rotation of the rotor, the lock levers 12, 12 meshing with the gears of the rotor simultaneously slide to protrude from the notches 10 ', 10' on the short side of the case body 10 in the extending direction or to retract in the shortening direction. I do. The shutter doors are locked or unlocked by key rods (not shown) connected to the respective ends by the forward and backward movements of the lock levers 12, 12. Such a locking and unlocking operation of the shutter door can be performed by a knob 35 provided at the inner end of the plug 20 rather than inside the door.
[0022]
Next, the cylinder lock provided on the case 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 which rotatably stores the rotary plug. The rotary plug 20 has a U-shaped slide bar 21 provided with a locking stopper 21a at the tip so as to protrude and retract from a part of the peripheral side thereof, and a plurality of tumblers arranged to regulate the forward and backward movement of the slide bar. And a pin 22. The rotary plug 20 is provided with a key hole 31 at the upper end for inserting a key. The keyhole 31 is rectangular as viewed from above, and its position is formed as a vertical hole vertically penetrating at the center.
[0023]
As shown in FIGS. 3 and 5A, the slide bar 21 is a U-shaped member having a constant width (w) and thickness (t) and provided with two opposing support pieces 21b and 21c. Thus, a locking stopper 21a is provided at the outer end (tip) of the U-shaped portion. The two support pieces 21b and 21c face each other with a space (s) therebetween, and each support piece is provided with a locking hole 24 through which the tumbler pin 22 is slidably inserted. In the illustrated example, it is desirable to form two rows of such locking holes 24 on both supporting pieces at an interval in front and rear and up and down, respectively, and to provide four on one side and eight in total on both sides. However, the number, arrangement, interval, and the like of the locking holes 24 are in various combinations, and therefore should not be limited to only the illustrated example.
[0024]
As shown in FIGS. 3 and 5B, the tumbler pin 22 is formed integrally with a conical head 22a and a trunk 22b via a stem (small shaft) 22c, and has a spring receiver 22d at the rear. Having. It is preferable that the diameter (d) of the head 22a and the body 22b be the same. The length of the trunk 22b of each tamboupin is constant, but the length of the head 22a is preferably set to different dimensions.
[0025]
The rotary plug 20 is provided with a slide bar receiving hole 26 for receiving the slide bar 21 and a tumbler pin receiving hole 28 for receiving the tumbler pin 22. The slide bar housing hole 26 has an opening 26a facing the stopper 21a for locking the slide bar, and guide portions 26b, 26c formed of narrow slots for fitting the two support pieces 21b, 21c to allow the slide guide. It becomes. When the slide bar 21 is accommodated in the accommodation hole 26, the slide bar 21 is guided by the guide portions 26b, 26c with the two support pieces 21b, 21c enclosing the key hole 31 in the middle, and slides in the radial direction. I can do it. A spring 25 is urged against the slide bar 21, and the slide bar 21 is pushed outward by the elastic force of the spring, so that the locking stopper 21 a at the tip can be locked in the locking recess 33 on the inner wall of the cylinder 30.
[0026]
The tumbler pin receiving holes 28 are provided in a direction orthogonal to the slide bar receiving holes 26, and the heads 22 a are inserted into the respective receiving holes 26 inward at the central portions, and the springs 29 are biased at the rear ends. The spring 29 is interposed in a compressed state between the rear end 22d of each tumbler pin 22 and the spring receiving plate 27 fitted in the opening of the accommodation hole. In this case, the tumbler pins 22 are each pushed inward by the spring pressure toward the center, so that the head portion 22a at the tip faces the key hole 31 and when the key is inserted, the head portion 22a resiliently comes into contact with the plate surface. .
[0027]
The cross-sectional shape of the plate key 1 is defined so as to fit into the keyhole 31, and dimples (recesses) 4, 5 are formed on the front surface 2 and the rear surface 3 at positions corresponding to the arrangement of the tumbler pins 22. Is formed. Such dimples 4, 5 are arranged on the front surface 2 and the back surface 3 of the plate key 1, front and rear and up and down. It is desirable that the depths of the dimples 4 and 5 are specified so as 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 shifted. 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 a 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 respective torso portions 22 b are pushed 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 rotation direction by the engagement between the stopper 21a and the engagement recess 33.
[0030]
From this locked state, when the plate key 1 is pushed into the key hole 31 of the rotary plug 20 to a predetermined position and set, 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 the retracted position is defined by the dimples 4 and 5 at the set position. At this time, the body 22 b of the tumbler pin 22 is Since the stem 22c comes into contact with the locking hole 24 instead of withdrawing from the slide bar 24, the restraint of the slide bar 21 from moving backward is released. When the plate key 1 is rotated to twist in the unlocking direction in this released state, the stopper 21a is pulled out of the locking recess 33 by the action of the cam formed by the taper. When the plug 20 is rotated by a predetermined angle by operating the plate key 1, the rotor 11 rotates together with the plug to move the lock bars 12, 12 in the retreating direction, so that the shutter door is unlocked.
[0031]
When the plate key 1 is inserted into the keyhole 33, if the key is incorrect, for example, if the depth or position of the dimple is at least one different, the one tumbler pin is used as the head or torso. Since one of the portions remains engaged and locked in the locking hole 24 of the slide bar 21, the restraint of the slide bar is not released, and it goes without saying that the shutter door cannot be unlocked.
[0032]
【The invention's effect】
According to the cylinder lock for shutter doors 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 using the plate key can be performed smoothly and smoothly. By arranging the tumbler pins on the left and right sides using the front and back surfaces of the keys, it is possible to easily set the number of types of keys to be twice or more as compared with the conventional case. In addition, the present invention can provide a high-quality shutter door cylinder lock that is durable and requires only a small number of components and components, can be simplified and requires a small number of processing steps.
[Brief description of the drawings]
FIG. 1 is a plan view of a shutter door cylinder lock according to the present invention, from which an entire cover is 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 according to the present invention, wherein FIG. 3 (a) is a longitudinal front view, and FIG. 3 (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.
5A and 5B are perspective views of a main part of the present invention, in which FIG. 5A is a perspective view of a slide bar, and FIG. 5B is a perspective view of a tumbler pin.
FIG. 6 is an explanatory view showing a conventional cylinder lock.
[Explanation of symbols]
1 Board Key 10 Case Body 11 Rotor 12 Lock Lever 20 Rotating Plug 21 Slide Bar 21a Locking Stoppers 21b, 21c Support 22 Tumbler Pin 24 Locking Hole 26 Slide Bar Housing Hole 28 Tumbler Pin Housing Hole 30 Cylinder 31 Key Hole 33 Lock recess

Claims (4)

The case body (10) attached to the shutter door includes 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 the inner end of the cylinder. A cylinder lock for a shutter door, comprising: a rotor (11) coupled to the (20); and a lock lever (12) meshing with the teeth of the rotor and moving longitudinally from both ends of the case body (10). , A U-shaped slide bar (21) provided with a locking stopper (21a) at the tip so as to protrude and retract from the rotary plug (20) from the peripheral side of the plug, and regulate the forward and backward movement of the slide bar. When a tumbler pin (22) is provided and the two U-shaped supports (21b, 21c) of the slide bar (21) are opposed to each other left and right around the keyhole (31). When the dimples formed on the plate surface opposite to the front and back surfaces of the plate key inserted into the keyholes on both support pieces coincide with each other, disengagement is performed so as to allow the slide bar (21) to move forward and backward. A cylinder lock for a shutter door, wherein at least one or a plurality of said tumbler pins (22) are arranged separately on both right and left sides. The cylinder lock for a shutter door according to claim 1, wherein the tumbler pins (22) are arranged on one side of each of the front and rear and up and down two rows. The cylinder lock for a shutter door according to claim 1 or 2, wherein the tumbler pins (22) are arranged so as to have different intervals and opposing positions. 4. The shutter according to claim 1, wherein the heads (22a) of the tumbler pins (22) arranged on the left and right face each other have different lengths. Door cylinder lock.

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