JP3115761U - Cylinder lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylinder locking device which does not cause a harmful effect due to wear of a keyhole, even though a rotor having a relatively low wear resistance such as die casting is adopted based on a simple structure. To provide.
In a cylinder locking device of a type having a die cast rotor 7 having a key hole 1 having a substantially rectangular cross section provided with inwardly protruding ridges 8 near the center of both long sides, the key hole 1 A cylinder lock having a guide ridge 9 provided at three corners in a state corresponding to the regulated groove 12a of the key at the corner, and one end edge And the master key 10b provided with the regulated groove 14 corresponding to the ridge portion 9 adjacent to the regulated piece 16 with the regulated piece 16 provided at the position with the key mountain portion abolished. And
[Selection] Figure 3

Description

  The present invention relates to a cylinder lock device that allows a key to be stably inserted and removed.

  In the conventional cylinder lock, the concavo-convex wall surface extending in the front-rear direction that forms the keyhole of the rotor is guided by the key without being rattled when the key is inserted or removed, and due to an error in the contact relationship between the key and the tumbler In order to prevent malfunctions and prevent the use of unauthorized keys, the main body of the rotor in conventional cylinder locks is mainly made of zinc alloy by die casting for reasons of productivity. As shown in Fig. 5 (a), the keyhole shape is a flat rectangular shape with a constricted central part, and the normally used child key is diagonal as shown in Fig. 5 (b). The section near the edge of the corner of the relationship is cut in half and formed into a cross section so as to be applied to the key mountain portion, so as to be a so-called reversible key, and the parent key is a child key as shown in (c) And a symmetrical cross section.

  Since zinc alloy has relatively low wear resistance, the keyhole of the zinc alloy rotor main body is subject to a wall surface due to friction with the key during use, such as a lock in a common facility such as a coin locker. In particular, the protrusions are easily worn, and in the above-mentioned conventional product, when the key is removed and the restriction is mainly performed on the protrusions, the protrusions are worn and the key is inserted and removed. A normal contact relationship with the tumbler may not be maintained and malfunction may occur, resulting in inconvenience in locking and unlocking.

  Therefore, the purpose of the present invention is to stabilize the key guide and enhance the durability by improving the keyhole shape despite the simple structure and adopting the die-cast rotor. The object is to provide a cylinder locking device.

  In order to achieve the above object, the invention of claim 1 is directed to a die-cast rotor having a key hole having an inward guide ridge provided in the vicinity of the center of opposite long sides of a substantially rectangular main section. For the type of cylinder lock device with which the key is provided, the key hole is provided with a guide ridge in a state corresponding to the key cutting part at one corner of the rectangular main part. It is characterized by a combination of a cylinder lock having three guide ridges and a master key provided with a regulated piece at an adjacent position corresponding to the key part of the child key while eliminating one of the key parts, The invention of claim 2 is the cylinder lock device according to claim 1, wherein one of the two ridges provided in the vicinity of the center of the long side has a wear resistance or hardness in a radial direction from the outside rather than the rotor main body. A comb-shaped reinforcing piece is inserted and fixed.

  According to the present invention, the protrusions for guiding the keyholes are added to three locations, and the parent and child keys are provided with regulated grooves corresponding to the protrusions, so that a simple configuration is achieved. The key insertion / removal operation can be maintained stably over a long period of time, and the parent key structure can be simplified without using a reversible type. In addition, since a part of the ridge is reinforced for wear resistance by attaching a reinforcing piece, this ensures a stable contact with the tumbler at all times when inserting and removing the key based on a simple structure. Can be locked and unlocked without any problems.

  As a cylinder locking device to which the present invention is applied, for example, as shown in FIGS. 1 and 2, a front and rear keyhole 1 corresponding to the reception of a key is formed near the center, and a plurality of diametrical directions are provided. A rotor main body 4 having a slit-like slot 2 and a spring receiving hole 3 adjacent to the slot 2 is provided, and a disk tumbler 5 is always provided in the slot 2 in the radial direction by a spring 6 in the spring receiving hole 3. The disk tumbler 5 is slotted only when a key is inserted, if necessary, in a state where the rotor 7 is housed in a cylinder (not shown) while being energized while being energized in an easy-to-advance direction. 2. A disc tumbler use type that is retracted to 2 and can be turned at a certain angle, for example, 90 ° or 180 ° is adopted.

  As a special configuration of the present invention for the cylinder lock device, for example, the guide hole portion 3 is provided inwardly at the center portion of both opposing long sides of a flat rectangular cross section of the key hole 1, and the spring receiving hole 3 The guide ridges 9 are projected to the middle of the thickness of the rectangular main part at the corners opposite to the receiving seats 3a. As the normally used child key 10a, as shown in FIG. 1 and FIG. 3 (b), the regulated groove 11 coincides with the protruding strip 8 inwardly in the center of both opposing long sides of a flat rectangle. In addition, the regulated grooves 12a are formed in the diagonal corners to leave the key pile 13a having a half thickness, and key piles corresponding to individual codes are cut in the key pile 13a. The cross-sectional shape of the blank of the child key 10a is a point-symmetric shape with respect to the central axis, and there is no difference in nature from the conventional child key. As the master key 10b, the regulated groove 11 is engraved inwardly in the center of both opposing long sides of a flat rectangle so as to coincide with the protruding strip 8, and one end edge (the upper half in the figure). Part), the restricted groove 12b is cut in the corner corresponding to the key piece 13a in the child key 10a, thereby forming the key piece 13b in the position corresponding to the restricted groove 12a in the child key 10a. A key pile as the master key 10b is engraved on the piece 13b. At the other end (lower half in the figure), a similar cut portion is provided at the same position as the regulated groove 12a in the child key 10a to form the regulated groove 14, and the regulated piece having a half thickness. 15 is formed at the same position as the key pile 13a in the child key 10a. The cross-sectional shape of the blank of the master key 10b is line symmetric with respect to a line that bisects both long sides.

  The rotor main body 4 is provided with a slit-like fitting hole 16 in the radial direction from the outside on the opposite side where the spring receiving hole 3 is provided, and against this, the wear resistance is formed with a ridge 8 at the tip. Alternatively, a comb-shaped reinforcing piece 17 (see FIG. 4) made of a material having hardness is prepared, and the reinforcing piece 17 is inserted into the fitting hole 16 so that the protruding strip portion 8 matches a predetermined position of the key hole 1. The reinforcement piece 17 is suitably made of stainless steel, but is suitably selected from materials having more wear resistance or hardness than the constituent material of the rotor main body 4. do it.

  In this specification, the ridges 8 and 9 are discontinuous by the slit-like groove 2 and the disc tumbler 5, but are expressed as ridges because the protrusions are arranged in a line. .

  It is a perspective view of the principal part of the cylinder lock device which shows one Embodiment in this invention.   It is a vertical end view of the cylinder locking device of FIG.   It is sectional drawing explaining the relationship between the keyhole and key of this invention.   It is a perspective view which shows the reinforcement piece in this invention.   It is sectional drawing explaining the relationship between the keyhole in a conventional apparatus, and a key.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Key hole 2 Slit-like groove hole 3 Spring receiving hole 3a Seat 4 Rotor main body 5 Disc tumbler 6 Spring 7 Rotor 8 Guide protruding ridge 9 Guide protruding ridge 10a Child key 10b Parent key 11 Restricted groove 12a Regulated groove 12b Regulated groove 13a Key pile piece 13b Key pile piece 14 Regulated groove 15 Regulated piece 16 Fitting hole 17 Reinforcing piece

Claims (2)

In addition to drilling the front and rear keyholes (1), the rotor main body (4) formed with a plurality of slit-like slots (2) in the diameter direction and spring receiving holes (3) adjacent to the slots (2) ), And the slot (2) is configured such that the disk tumbler (5) is accommodated while being always urged in the direction in which it is easy to advance in the radial direction by the spring (6) in the spring receiving hole (3). (7) is housed in the cylinder, and the disk tumbler is used so that the disk tumbler (5) can be retracted into the slot (2) only when the key is inserted and swiveled at a certain angle. Cylinder locking device of
In addition to providing an inward guide ridge (8) at the center of both opposing long sides of a flat rectangle as the cross-sectional shape of the key hole (1), the seat (3a) of the spring receiving hole (3) And a protruding protrusion (9) for guiding at the corner of the diagonal position projecting to about the middle of the thickness of the rectangular main part,
As a cross-sectional shape of the locking / unlocking child key (10a), an inwardly regulated groove (11) is engraved in the center of the opposite long sides of the flat rectangle so as to coincide with the ridge (8). At the same time, the regulated groove (12a) is cut in the corners of the diagonal relationship to leave a key pile piece (13a) whose thickness is half, and the key pile is engraved on the key pile piece (13a).
As the cross-sectional shape of the master key (10b), a regulated groove (11) is engraved inwardly in the center of both opposing long sides of a flat rectangle so as to coincide with the ridge (8), and one side By cutting the regulated groove (12b) at the corner corresponding to the key pile (13a) in the child key (10a) at the edge of the key, it corresponds to the regulated groove (12a) in the child key (10a). A key pile piece (13b) is formed at the position, and a key pile is engraved on the key pile piece (13b), and the other edge is cut at the same position as the regulated groove (12a) in the child key (10a). A cylinder lock characterized in that a regulated groove (14) is formed by providing a forming portion, and a regulated piece (15) having a half thickness is formed at the same position as the key piece (13a) in the child key (10a). apparatus.   A die-cast rotor main body (4) is adopted, and the rotor main body (4) is provided with a slit-like fitting hole (16) in the radial direction from the outside on the side opposite to the spring receiving hole (3). On the other hand, a comb-shaped reinforcing piece (17) made of a material having wear resistance or hardness higher than that of the rotor main body (4) and having a protrusion (8) formed at the tip is prepared, and this reinforcing piece (17 The cylinder locking device according to claim 1, wherein the protruding strip portion (8) is inserted into and fixed to the fitting hole (16) so that the protruding portion (8) matches a predetermined position of the key hole (1).

Images