JP2011214377A - Simple cylinder for lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem wherein there seems to be a means for illegally unlocking a thumb turn on the indoor side by a certain means among illegal unlocking means, and a cylinder can be installed also on the indoor side to solve this problem, but a cylinder lock is precisely formed from the viewpoint of crime prevention and cannot be mass-produced, which results in costing for manufacture and costing also on the user side because of needing to replace both outdoor and indoor side cylinders when replacing the cylinder.SOLUTION: An inner cylinder is provided with neither a pin nor a tumbler corresponding to a notch or recess of a duplicate key, and the inner cylinder is separated into a rear inner cylinder 2 and a front inner cylinder 4. The rear inner cylinder 1 is provided with a tail piece 3 and a cavity 6, and the front inner cylinder 2 is provided with a key guide 5 and a cavity 7 to develop a simple cylinder provided with the key guide 5 of the same shape as the cross-sectional shape of a key shaft 12.

Description

  The present invention relates to a lock cylinder that realizes a locking / unlocking function with a simple structure.

  The basic structure of the cylinder is shown in FIG. By inserting a key from the key guide 64 toward the cavity 65 and rotating the inner cylinder 62, the tail piece 63 moves the connected lock.

  The cylinder shown in FIG. 29 is provided with a plurality of tumblers 66 between an inner cylinder 62 and an outer cylinder 61. The inner cylinder is allowed to rotate when the depth of the dents and dimples provided in the key shaft 12 matches the size of each tumbler.

  The cylinder shown in FIG. 33 is provided with a plurality of pin rows 69 including driver pins and guide pins between an inner cylinder 62 and an outer cylinder 61. The inner cylinder is allowed to rotate because the depth of the notch or the depression provided in the key shaft 12 matches the length of the driver pin of each pin row.

  The following prior art shows an example in which a cylinder that is generally used on the outdoor side such as a door is also used on the indoor side. In general, only the thumb turn is provided on the indoor side, but there is a case where it is not desired to operate the thumb turn freely. Therefore, a cylinder may be supplementarily used on the indoor side. That is, an example is shown in which the thumb turn operation can be performed only after the indoor cylinder operation with the key is performed.

Japanese Patent No. 3968233 Patent No. 4,371,763

  These cylinders cannot be the same for security purposes. Therefore, the shape of the tumbler must be changed for each cylinder and the length of the driver pin must be changed, and its production takes a great deal of cost and time.

  In a scene where high security is required, the cost may be secondary, but in a scene where high security is not required, a cylinder that can be manufactured relatively inexpensively is desired.

  In this respect, there is a dummy cylinder as a cylinder that does not cost much. Like a real cylinder for locks, it consists of an outer cylinder 71 and a core material 72 corresponding to the inner cylinder, but the core material 72 has no tailpiece. In other words, there is no function as a cylinder for locks. Therefore, even if there is a psychological effect, it is not useful in a scene where a function as a lock is required.

  On the other hand, for example, as shown in the prior art document, when a cylinder is supplementarily used on the indoor side in order to allow the thumb turn operation, the cylinder may not be as precise as the outdoor cylinder.

  Accordingly, it is an object of the present invention to provide a lock cylinder that can be manufactured at low cost while maintaining minimum crime prevention, both psychologically and functionally.

  Therefore, first, the inner cylinder is not provided with a pin or tumbler corresponding to the key notch or depression, but the tail piece 3 for connection to the lock structure, the cavity 6 for storing the key shaft 12, and the key shaft 12 A key guide 5 having the same shape as the cross-sectional shape is provided. This is called “simple cylinder”.

  Second, as a variation of the “simple cylinder”, the tailpiece 23 is not provided integrally with the inner cylinder 21 but is connected to the inner cylinder 21 via the spring 26 so that the key is not inserted. The tail piece 23 is retracted and accommodated in the inner cylinder by the pushing force of the spring 26. When the key is inserted against the pushing force of the spring 26, the tail piece protrudes from the rear and is connected to the lock structure. developed.

  Third, as a variation of the “simple cylinder”, the inner cylinder is separated into the rear inner cylinder 2 and the front inner cylinder 4, the tail piece 3 and the cavity 6 are provided in the rear inner cylinder 1, and the key guide is provided in the front inner cylinder 2. 5 and a cavity 7 are provided, and the cavity 7 has the same shape as the cross-sectional shape of the key shaft 12, and the cavity 6 has an arbitrary shape.

  Fourthly, as a variation of the above “simple cylinder”, a pin chain composed of a driver pin 37, a guide pin 38 and a spring 39 corresponding to the thickness of the key shaft has been developed.

  Fifth, we have developed a "simple cylinder" with an inner cylinder maintenance function.

  It is excellent in cost performance because it can be manufactured at low cost.

  Since it cannot be operated without a key having a key shaft having the same shape as the key guide, it is excellent in crime prevention.

  In addition to the existing cylinders and thumbturns, the simple cylinder according to the present invention has been developed, so that it can be used in a variety of situations as shown in FIGS.

Simple cylinder perspective view AA sectional view of the cylinder shown in FIG. Key guide for cylinder shown in Fig. 1 Sectional cross-sectional view at position B in FIG. Sectional cross-sectional view at position C in FIG. Side view of key Sectional view at the D position of the key in FIG. 6 (sectional shape of the key shaft) The inside of a simple cylinder with a position holding function added to the inner cylinder Sectional cross-sectional view at position E in FIG. Cross-sectional view at E position when inner cylinder 2 is rotated 90 degrees Figure with a key inserted into a simple cylinder with a tailpiece via a spring The figure which extracted the joint key from FIG. The figure showing the shape of the key guide 28 in FIG. Exploded view of the simple cylinder shown in FIG. The inside of a simple cylinder with a pin row corresponding to the thickness of the key shaft 15 is a cross-sectional view at the position F in FIG. Enlarged view of the pin row in FIGS. 15 and 16 Side view of the key corresponding to the simple cylinder in FIG. 18 is a cross-sectional view of the key in position G in FIG. The figure which inserted the key of FIG. 18 in the simple cylinder of FIG. 20 is a cross-sectional view at the F 'position in FIG. Sectional cross-sectional view at the F 'position when the inner cylinder 32 is rotated 90 degrees The outer cylinder constituting the simple cylinder in FIG. Inner cylinder constituting the simple cylinder in FIG. Example of using a simple cylinder outside the door lock Example of using a simple cylinder inside the door lock Example of using a simple cylinder inside the door lock Example of using a simple cylinder on the indoor side of a sliding door lock Conventional cylinder lock (disc cylinder lock) 29 is a cross-sectional view at the H position in FIG. Structure of conventional dummy cylinder Basic cylinder consisting of an outer cylinder and an inner cylinder Conventional cylinder lock (pin cylinder lock)

  The inner cylinder is not provided with a pin or tumbler corresponding to the notch or depression of the key, but is connected to the lock structure, the cavity 6 for storing the key shaft 12, and the same shape as the sectional shape of the key shaft 12. The key guide 5 is a basic form of the simple cylinder for locks according to the present invention.

  This embodiment is shown in FIGS. A feature of this embodiment is that the tail piece 23 is separated from the inner cylinder 21 and the tail piece is assembled to the inner cylinder so as to be movable. The inner cylinder is provided with a movable groove 27 to the extent that the tail piece is retracted into the inner cylinder, and a spring 26 is provided between the inner cylinder 21 and the tail piece 23. When the key is removed, the tail piece 23 is removed. Is pushed by the spring 26 and retracted into the inner cylinder 21. Therefore, even if the inner cylinder 21 is rotated in this state, the inner cylinder 21 only idles and no rotational operation force is transmitted to the lock structure.

  On the other hand, when the key is inserted from the key guide 28 against the pushing force of the spring 26, the tail piece protrudes from the rear and is connected to the lock structure. When the inner cylinder 21 is rotated in this state, the rotational operation force is transmitted to the lock structure. That is, unless the key shaft 12 having the same cross-sectional shape as that of the key guide 28 is inserted deeply and rotated, the locking and unlocking cannot be performed.

  This embodiment is shown in FIGS. The inner cylinder is divided into a rear inner cylinder 2 and a front inner cylinder 4, a tail piece 3 and a cavity 6 are provided in the rear inner cylinder 2, and a key guide 5 and a cavity 7 are provided in the front inner cylinder 2. Unless the key shaft 12 having the same cross-sectional shape as that of the key guide 5 is inserted deeply and rotated, it cannot be locked and unlocked. This is because, when inserted a little, the front inner cylinder 4 simply rotates idle, and the rear inner cylinder 2 integrated with the tailpiece 3 does not rotate, and no rotational operating force is transmitted to the lock structure.

  FIG. 2 shows the present embodiment most accurately. Of the cavities 6 and 7, the cavity 7 that is integral and continuous with the key guide 5 has the same shape as the key guide 5, but the shape of the cavity 6 is arbitrary.

  This embodiment is shown in FIGS. A feature is that a pin row including a driver pin 37, a guide pin 38, and a spring 39 according to the thickness of the key shaft 12 is provided. If the key shaft 12 does not reach the position where the pin row is provided, the shear line (the line where the boundary line between the driver pin 37 and the guide pin 38 coincides with the boundary line between the outer cylinder 31 and the inner cylinder 33) cannot be aligned. The inner cylinder 33 cannot be rotated. In order to obtain the crime prevention effect according to this embodiment, only one pin row is sufficient, but it is more effective to provide the pin row as far back as possible.

  As shown in FIG. 18, when the dedicated dimple 40 is provided on the key shaft 12, the crime prevention performance is remarkably improved.

  In this embodiment, an inner cylinder maintaining and holding function for holding the inner cylinder in a fixed position is added to the above-described embodiments. If the inner cylinder turns freely or the key guide 5 stops at an irregular angular position, it is easily understood that the cylinder is not a full-fledged cylinder. Of the examples so far, description will be given based on Example 2 (a type in which the inner cylinder is separated into the rear inner cylinder 2 and the front inner cylinder 4).

  FIG. 8 to FIG. 10 show the case where this function is added to the front inner cylinder 4. A click ball 15 that is also used in a general cylinder is used, the click ball is pushed by a click spring 16, and the inner cylinder is held at a position where the click ball enters the recess 17.

  The present invention is a cylinder for a lock with a simplified internal structure, and a method of use as shown in FIGS. 25 to 28 is conceivable. In particular, the use of door locks, door locks or sliding door locks as indoor cylinders is expected.

DESCRIPTION OF SYMBOLS 1 ... Outer cylinder 2 ... Back inner cylinder 3 ... Tail piece 4 ... Front inner cylinder 5 ... Key guide 6 ... Cavity 7 ... Cavity 8 ... Retainer 9 ... Partition 11 ... Knob 12 ... Key shaft 13 ... Key tip 15 ... Click ball 16 ... click spring 17 ... hollow 21 ... inner cylinder 22 ... tail piece guide 23 ... tail piece 24 ... fixed pin 25 ... cavity 26 ... spring 27 ... movable groove 28 ... key guide 29 ... tail piece through hole 30 ... outer cylinder 31 ... Outer cylinder 32 ... fixing pin 33 ... inner cylinder 34 ... tail piece 35 ... cavity 36 ... key guide 37 ... driver pin 38 ... guide pin 39 ... spring 40 ... dimple 41 ... inner cylinder hole 42 ... pin groove 43 ... pin groove 51 ... Door 52 ... Outer 53 ... Inner 54 ... Dead bolt 55 ... Simple cylinder 56 ... Thumb turn 57 ... Cylinder 58 ... sickle 59 ... Thumb turn 61 ... Outer cylinder 62 ... Inner cylinder 63 ... Tailpiece 6 ... key guide 65 ... cavity 66 ... tumblers 67 ... locking bar 68 ... stopper 69 ... pin rows 71 ... outside the dummy cylinder barrel 72 ... dummy cylinder core member (inner cylinder does not rotate)
73 ... Key guide-shaped depression (dummy keyhole)

Claims (5)

  Tail for connecting to the lock structure without the pin or tumbler corresponding to the key notch or depression in the inner cylinder in the lock cylinder that rotates and locks the inner cylinder by turning the key shaft into the key hole. A simple cylinder comprising a piece 3, a cavity 6 for housing a key shaft 12, and a key guide 5 having the same shape as the cross-sectional shape of the key shaft 12   In the simple cylinder according to claim 1, the tail piece 23 is not provided integrally with the inner cylinder 21, but is connected to the inner cylinder 21 via the spring 26, so that the tail piece 23 is not inserted in the key. Is retracted and accommodated in the inner cylinder by the pushing force of the spring 26, and when the key is inserted against the pushing force of the spring 26, the tail piece protrudes from the rear and is connected to the lock structure.   The simple cylinder according to claim 1, wherein the inner cylinder is separated into a rear inner cylinder 2 and a front inner cylinder 4, a tail piece 3 and a cavity 6 are provided in the rear inner cylinder 1, and a key guide 5 and a cavity are provided in the front inner cylinder 2. 7, the shape of the cavity 7 is the same as the cross-sectional shape of the key shaft 12, and the cavity 6 has an arbitrary shape.   2. A simple cylinder according to claim 1, wherein a pin row comprising a driver pin 37, a guide pin 38, and a spring 39 according to the thickness of the key shaft is provided.   7. The simple cylinder according to claim 1, further comprising an inner cylinder position holding function.

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