Cylinder lock and door

Abstract

To provide a cylinder lock capable of reducing the diameter of an outer cylinder and having excellent assembling workability.SOLUTION: A cylinder lock comprising: an outer cylinder; an inner cylinder rotatably fitted to the outer cylinder; and a lid member covering the outer cylinder, wherein pin holes which communicate with a keyhole and into which a driver pin and a tumbler pin can be inserted are formed in the outer cylinder and the inner cylinder, and the lid member is a plurality of lid members covering a plurality of rows of the pin holes in an axial direction of the outer cylinder. Preferably, two lid members are provided and made of a spring steel material.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to cylinder locks and doors. [Background technology]

[0002] Conventionally, cylinder locks have been known that are installed on doors of houses and the like. A cylinder lock has an outer cylinder, an inner cylinder that rotatably fits into the outer cylinder, and a driver pin and a tumbler pin that restrict the rotation of the inner cylinder. An unlocking key corresponding to the cylinder lock has a concave or convex portion formed at the contact portion with the tumbler pin. The unlocking key is inserted into the keyhole of the cylinder lock, and the contact surfaces of the driver pin and the tumbler pin are aligned with the sheer line, which is the outer peripheral surface of the inner cylinder, to allow the inner cylinder to rotate. This allows the cylinder lock to be locked or unlocked. The driver pin and the tumbler pin are housed in holes formed in the outer cylinder and inner cylinder, together with a biasing member such as a spring (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication No. 7-37009 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology disclosed in Patent Document 1, grooves with dovetail-shaped cross sections are carved along the row of driver pin holes opening on the outer surface of the outer cylinder. An arc-shaped cover plate is inserted into the bottom of the groove, and a spring is inserted between the cover plate and the driver pin. A cover plate is provided for each row of driver pin holes. There is a demand for smaller cylinder barrels for space saving and manufacturing cost reduction. However, this technology has the problem that when the diameter of the outer cylinder is reduced, adjacent dovetail grooves interfere with each other, limiting the size of the outer cylinder beyond a certain point. Therefore, it is possible to use a cylindrical cover material to simultaneously seal all driver pin holes. However, this method requires simultaneous assembly of multiple driver pins and biasing members arranged in multiple directions, resulting in difficult assembly and poor workability.

[0005] The present disclosure has been made in view of the above, and aims to provide a cylinder lock that allows the outer cylinder to be made smaller in diameter and has good assembly workability. [Means for solving the problem]

[0006] The present disclosure relates to a cylinder lock comprising an outer tube, an inner tube rotatably fitted to the outer tube, and a cover material covering the outer tube, wherein the outer tube and inner tube have pin holes formed therein that communicate with keyholes and through which driver pins and tumbler pins can be inserted, and the cover material is a plurality of cover materials that cover multiple rows of the pin holes in the axial direction of the outer tube. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view showing the configuration of a cylinder lock according to a first embodiment. FIG. [Figure 2] FIG. 2 is an exploded perspective view showing the configuration of the cylinder lock according to the first embodiment. [Figure 3] FIG. 2 is a front view of the lid according to the first embodiment. [Figure 4] FIG. 2 is a front view of the outer cylinder according to the first embodiment. [Figure 5] FIG. 10 is a front view of an outer tube and a cover member according to a second embodiment. [Figure 6] 1 is a front view of a door equipped with a cylinder lock according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0008] First Embodiment <Cylinder lock> As shown in Fig. 1, the cylinder lock 10 according to this embodiment is used in a locking device 1 together with an unlocking key 5 that can lock and unlock the cylinder lock 10. As shown in Figs. 1 and 2, the cylinder lock 10 has an inner cylinder 2, an outer cylinder 3, a decorative member 4, a driver pin 61, a tumbler pin 62, and a pair of lid members 101. The inner cylinder 2 is rotatably fitted to the fixed outer cylinder 3.

[0009] (inner cylinder) As shown in Fig. 2, the inner cylinder 2 is a substantially cylindrical member that rotatably fits into the outer cylinder 3. There are no particular restrictions on the material of the inner cylinder 2, but it is made of a metal such as brass, for example. The inner cylinder 2 fits into the outer cylinder 3 with its outer peripheral surface 20, which is the sliding surface, abutting against the inner peripheral surface 30 of the outer cylinder 3. A keyhole 21, into which an unlocking key 5 can be inserted, is formed in the inner cylinder 2 along the axial direction of the inner cylinder 2.

[0010] As shown in Fig. 2, a plurality of pin holes 22 communicating with the keyhole 21 are formed in the outer peripheral surface 20 of the inner cylinder 2. The plurality of pin holes 22 are holes into which at least a portion of the driver pin 61 and the tumbler pin 62 can be inserted and removed. Each of the plurality of pin holes 22 has a cylindrical inner peripheral surface 22a. The pin holes 22 according to this embodiment are formed in a plurality of rows along the axial direction of the inner cylinder 2, and a plurality of sets of the plurality of rows of pin holes 22 are formed in the circumferential direction of the inner cylinder 2.

[0011] (Outer cylinder) As shown in Figure 2, the outer cylinder 3 is a substantially cylindrical member into which the inner cylinder 2 can be fitted in a hole 31 formed inside. The material of the outer cylinder 3 is not particularly limited, but it may be made of a metal such as brass, similar to the inner cylinder 2. The outer cylinder 3 is fixed so that it cannot rotate. The inner peripheral surface 30 of the outer cylinder 3, which is the sliding surface, abuts against the outer peripheral surface 20 of the inner cylinder 2, fitting with the inner cylinder 2.

[0012] The outer cylinder 3 is formed with a hole 31 along the axial direction of the outer cylinder 3, into which the inner cylinder can be fitted. A plurality of pin holes 32 communicating with the hole 31 are formed on the outer peripheral surface of the outer cylinder 3. The plurality of pin holes 32 are holes into which at least a portion of the driver pin 61 and the tumbler pin 62 can be inserted and removed. Each of the plurality of pin holes 32 has a cylindrical inner peripheral surface 32a. In this embodiment, the plurality of pin holes 32 are formed in multiple rows along the axial direction of the outer cylinder 3 and arranged to be able to communicate with the plurality of pin holes 22, and multiple sets of the plurality of rows of pin holes 32 (six rows in this embodiment) are formed in the circumferential direction of the outer cylinder 3. The plurality of pin holes 22 and the plurality of pin holes 32 communicate with each other so that at least a portion of the driver pin 61 and the tumbler pin 62 can be inserted and removed when the inner cylinder 2 is rotated relative to the outer cylinder 3 to a predetermined position.

[0013] FIG. 4 is a view of the outer cylinder 3 as viewed from the keyhole 21 side. As shown in FIG. 4, the outer cylinder 3 is provided with a groove 33 along the axial direction. The groove 33 has a substantially rectangular shape in cross section and is open toward the outer peripheral surface of the outer cylinder 3. The groove 33 is formed from one end face to the other end face of the outer cylinder 3, and is a groove with which a bent portion 8 of the lid member 101, which will be described later, can engage. In this embodiment, two grooves 33 are provided. The grooves 33 and the bent portions 8 will be described in detail later.

[0014] (Decorative materials) As shown in FIG. 1, the decorative member 4 is a member that covers and decorates the front surface of the cylinder lock 10, that is, the surfaces of the inner cylinder 2 and the outer cylinder 3 facing the keyhole 21. The decorative member 4 has a hole that is arranged to communicate with the keyhole 21. The decorative member 4 is not particularly limited, but is made of metal or the like. A plating layer or the like may be formed on the surface of the decorative member 4 to enhance the design. The decorative member 4 makes the inner cylinder 2 and the outer cylinder 3 almost invisible from the outside. Instead of the decorative member 4, at least the front surfaces of the inner cylinder 2 and the outer cylinder 3 may be decorated by forming a plating layer or the like.

[0015] (driver pins, tumbler pins) The driver pin 61 and the tumbler pin 62 are generally cylindrical members that are slidably housed in the pin holes 22 and 32. The tumbler pin 62 is a pin that is placed on the keyhole 21 side, and has a rounded tip that abuts against the unlocking key 5. One end of the driver pin 61 abuts against the tumbler pin 62, and the other end abuts against a biasing member (not shown). Although FIG. 2 omits some parts and shows only one set of the driver pin 61 and the tumbler pin 62, there are multiple sets of driver pins 61 and tumbler pins 62 that are housed in multiple sets of the pin holes 22 and 32.

[0016] In this embodiment, the driver pins 61 and tumbler pins 62 are arranged in six rows in the axial direction of the circular keyhole 21. The number of rows in which the driver pins 61 and tumbler pins 62 are arranged in the axial direction of the keyhole 21 is not limited to six, and can be any number, for example, three or more rows.

[0017] (lid material) The cover member 101 covers multiple axial rows of pin holes 32 provided in the outer cylinder 3. The cover member 101 abuts against and is fixed to a biasing member that applies a circumferential biasing force to the driver pin 61, thereby resisting the biasing force. As a result, the driver pin 61 is housed in the pin hole 32 and is subjected to a biasing force in the inward circumferential direction. By covering the multiple axial rows of pin holes 32 with the cover member 101, the arrangement space for the groove for fixing the cover member can be reduced compared to conventional cover members that cover each row of driver pin holes. This allows the outer cylinder 3 to be made smaller in diameter. In addition, the multiple rows of driver pins 61, tumbler pins 62, and biasing members can be assembled simultaneously, reducing the assembly process and number of parts for the cylinder lock 10.

[0018] In this embodiment, one cover material 101 covers three axial rows of pin holes 32. However, this is not limited to the above, and one cover material may cover multiple axial rows of pin holes. For example, it may cover two axial rows of pin holes 32. In this case, three cover materials 101 are provided, and three groove portions 33 are formed. The more rows of pin holes one cover material covers, the more the space required for arranging the grooves is reduced, and the more effective it is to reduce the number of assembly steps and parts for the cylinder lock 10. On the other hand, by reducing the number of rows of pin holes covered by one cover material, the assembly work of the cylinder lock 10 can be made easier.

[0019] Multiple cover members 101 are provided, and two are provided in this embodiment. Providing multiple cover members 101 improves the ease of assembly of cylinder lock 10 compared to using a single cylindrical cover member. When using a single cylindrical cover member, all of driver pins 61, tumbler pins 62, and biasing members must be assembled at the same time. However, it is difficult to assemble cylinder lock 10 by attaching a single cover member while multiple driver pins 61 and tumbler pins 62 biased in opposite directions are housed in pin holes 22 and pin holes 32, respectively. In view of the effects of reducing the space required for arranging the grooves and reducing the number of assembly steps and parts for cylinder lock 10, it is most preferable to provide two cover members 101.

[0020] It is preferable to use spring steel as the material for the lid member 101. This allows the lid member 101 and the outer cylinder 3 to be tightly attached with no gaps. In particular, it is more preferable to use stainless steel spring steel. Specifically, SUS304CSP can be used.

[0021] As shown in Fig. 3, the lid member 101 has a curved portion 7 and bent portions 8 formed on both ends of the curved portion 7. Fig. 3 is a view of the lid member 101 viewed from the keyhole 21 side, from the same perspective as Fig. 4. In this embodiment, the pair of lid members 101 have the same shape and are arranged in positions symmetrical with respect to the axis of the keyhole 21.

[0022] The curved portion 7 is a surface that contacts the outer peripheral surface of the outer tube 3, and has a shape that follows the outer peripheral surface of the outer tube 3. Before the lid member 101 is attached to the outer tube 3, the curved portion 7 is bent slightly inward from the outer peripheral surface of the outer tube 3. As a result, when the lid member 101 is attached to the outer tube 3, the spring force causes the lid member 101 and the outer tube 3 to tightly contact each other. In this embodiment, two lid members 101 are provided, and therefore the curved portion 7 has a substantially semicircular cross-sectional shape.

[0023] The bent portions 8 are a pair of bent portions formed by bending both ends of the curved portion 7. The bent portions 8 are configured to be able to engage with the groove portion 33 of the outer tube 3, as shown in FIG. 4. As shown in FIG. 3, the bent portion 8 is composed of an extending portion 81 and an arc-shaped bent portion 82. The extending portion 81 extends inward from the center of the arc shape of the curved portion 7. As a result, when the bent portion 8 is engaged with the groove portion 33, the extending portion 81 is deformed, and a frictional force is generated between the extending portion 81 and the groove portion 33 due to the spring force, thereby suppressing axial displacement of the lid member 101. To further suppress axial displacement of the lid member 101, the shape and material of the lid member 101 can be changed to one that has a higher spring force.

[0024] In this embodiment, a pair of grooves 33 are provided for the two lid materials 101. That is, the groove 33 is a common groove 33 for engaging adjacent lid materials 101, and one wall surface and the other wall surface of the groove 33 can be used to fasten another lid material 101. Therefore, unlike when a groove for fastening a lid material is provided for each lid material, adjacent grooves do not interfere with each other, preventing a situation in which installation space cannot be secured.

[0025] The method of assembling the cylinder lock 10 is to first assemble the inner cylinder 2 and the outer cylinder 3, and then, as shown in Figure 2, fix the outer cylinder 3 by sliding the bent portion 8 of the cover member 101 along the axial direction of the outer cylinder 3 so that it is inserted into the groove portion 33. This allows the cylinder lock 10 to be assembled favorably even if the spring force of the cover member 101 is strong.

[0026] [Unlocking key] The unlocking key 5 is an unlocking key that can lock and unlock the cylinder lock 10. In this embodiment, the insertion portion of the unlocking key 5 into the keyhole 21 has a cylindrical shape. The unlocking key 5 in FIG. 1 is illustrated as a blank key. When the unlocking key 5 is actually applied to the cylinder lock 10, recesses are formed on the outer surface of the insertion portion according to the lengths and arrangement of each driver pin 61 and tumbler pin 62 of the cylinder lock 10.

[0027] <Door> As shown in Fig. 6, the door 100 according to this embodiment is placed in a door opening A of a building frame so as to be able to open and close. The door 100 has, at the door end, a handle 9 for opening and closing the door 100, and a pair of cylinder locks 10 disposed above and below the handle 9. The door 100 is used, for example, as a front door.

[0028] Second Embodiment Next, the configuration of a cylinder lock 10a according to a second embodiment of the present disclosure will be described with reference to Fig. 5. The same components as those in the first embodiment will be given the same reference numerals in the drawings, and the description thereof will be omitted.

[0029] As shown in Fig. 5, the cylinder lock 10a according to the second embodiment has an outer cylinder 3a and a cover member 102. Other than the above, the configuration of the cylinder lock 10a is the same as that of the cylinder lock 10 according to the first embodiment.

[0030] FIG. 5 is a view of the outer tube 3a and the lid member 102 viewed from the keyhole side, from the same perspective as in FIGS. 3 and 4. As shown in FIG. 5, the outer tube 3a has multiple grooves 33a. The multiple grooves 33a are formed on the side of an extension formed along the axial direction of the outer tube 3a. The grooves 33a have a roughly rectangular shape in cross section and are grooves that open in the tangential direction of the outer tube 3a. The grooves 33a are formed from one end to the other end of the outer tube 3a and are grooves that can engage with the end of the lid member 102. In this embodiment, four grooves 33a are provided.

[0031] Like the lid member 101, the lid member 102 covers multiple rows of holes in the axial direction provided in the outer tube 3a. In this embodiment, the lid member 102 does not have any bent portions, but only has curved portions that follow the outer peripheral surface of the outer tube 3a. Like the lid member 101, this lid member 102 can be made of, for example, stainless steel spring steel. By making the lid member 102 have a structure that does not have any bent portions, the structure of the lid member 102 can be simplified. On the other hand, the number of groove portions 33a of the outer tube 3a that the lid member 102 engages with increases, making the structure of the outer tube 3a more complex.

[0032] Although the cylinder lock and the door according to each embodiment of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be modified as appropriate.

Claims

1. The device comprises an outer cylinder, an inner cylinder rotatably fitted to the outer cylinder, and a lid member covering the outer cylinder, The outer cylinder and the inner cylinder are formed with pin holes that communicate with the keyholes and through which driver pins and tumbler pins can be inserted, the cover members are a plurality of cover members covering a plurality of the pin holes in the axial direction of the outer cylinder, A cylinder lock in which the outer cylinder has a groove formed between one of the pin holes and any of the other pin holes, with which the lid material can engage.

2. The cylinder lock according to claim 1 , wherein the pin holes of the outer cylinder are formed in a plurality of rows along the axial direction.

3. The cylinder lock according to claim 1 or 2, wherein the cover members are a plurality of cover members that collectively cover a plurality of rows of the pin holes in the axial direction of the outer cylinder.

4. The cylinder lock according to any one of claims 1 to 3, wherein the pin holes of the outer cylinder collectively covered by the lid member are arranged in a plurality in a circumferential direction of the outer cylinder.

5. The cylinder lock according to any one of claims 1 to 4, wherein two of the cover members are provided.

6. The cylinder lock according to any one of claims 1 to 5, wherein the cover material is made of spring steel.

7. The lid member has a curved portion having a shape that follows the outer peripheral surface of the outer cylinder, and a bent portion that bends inward of the curved portion, The cylinder lock according to any one of claims 1 to 6, wherein the cover member is configured so that the bent portion can engage with the groove portion.

8. A door equipped with the cylinder lock according to any one of claims 1 to 7.

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