JPH0427087A - Idling type cylinder lock device - Google Patents

Abstract

PURPOSE:To make it possible to prevent a key device exactly from a violent breaking and unjust unlocking by fastening a lock of a shaft against a cylinder case, and releasing the locking of a rotor against the shaft when a key is pulled out of a keyhole. CONSTITUTION:A shaft 2 is housed in a hollow section 3 of a cylinder case 1, and a rotor 4 is housed in a hollow section 5 of the shaft 2 so that they are capable of rotating by preventing the movement in the direction of their shafts. After that, a driver pin 9, cord pin 10 and tumbler pin 11 are successively housed in pin-holes 6, 7 and 8 of the cylinder case 1, shaft 2 and rotor 3, and they are slid and energized by springs 12. When a key 14 is inserted into a keyhole 13, the locking of the shaft 2 against the cylinder case 1 is released, and a lock of the rotor 4 against the shaft 2 is fastened. When the key 14 is pulled out of the keyhole 13, a lock of the shaft 2 against the cylinder case 1 is fastened, and the lock of the rotor 4 against the shaft 2 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an idle-running type cylinder lock device that avoids violent breakage caused by a drill by idle rotation of a rotor.

[Prior Art] The idle-rotating cylinder lock device disclosed in Utility Application No. 1-83259 is rotatably fitted into a main body having a concave portion on the rear inner surface, and a radial pin hole is provided. A cylinder; A shaft that is rotatably fitted to the main body and has a radial through hole; A shaft that is fitted to the cylinder and the shaft so that it can move in the axial direction, and has a pin hole consisting of a large diameter hole and a small diameter hole. Provided on a thin cylindrical wall 1. A movable rotor urged forward by a bend; engages with the recess of the main body and the through hole of the shaft to lock the shaft to the main body, and engages the through hole of the shaft with the recess of the movable rotor. to release the lock on the shaft,
A sphere that is pushed back into the recess by the inclined cam surface of the recess: A stationary rotor that is fitted into the movable rotor and has an axial free hole and a radial pin hole; A sphere that is fitted to the movable rotor so that it can move in the axial direction A connector is provided with a driven part that engages the driving part of the stationary rotor and a drive part that engages the passive part of the shaft. a lock pin having; an operating part for pushing the lock pin so that the small diameter part of the lock pin is at the level of the pin hole of the movable rotor; the length of the operating part is formed to match the movement stroke of the movable rotor; and a key for engaging the driving part of the shaft with the passive part of the shaft.

In this conventional device, in the locked state where the sphere is engaged with the four parts of the main body and the through hole of the shaft, the large diameter part of the lock pin is engaged with the large diameter part of the pin hole, so the stationary rotor Even if you insert a picking tool such as a band plate or wire into the key hole and rotate the stationary rotor, the stationary rotor and movable rotor will simply idle together with the cylinder, and the movable rotor and connector will not move back. The driving part of the connector does not engage with the passive part of the shaft, and unauthorized unlocking by means other than an authorized key is impossible.

However, this conventional device has a complicated structure and a large number of parts, so it is difficult to reduce manufacturing costs.Also, a part of the sphere enters and retracts diagonally through the hole in the shaft, causing the concave part of the main body and the movable rotor. The shaft is locked and released by selectively engaging one of the recesses in the shaft, and as it is a complex operation method that requires precision in the movement of each part, each part has a precise machining finish. was necessary, and even a slight decrease in machining accuracy would immediately lead to malfunction.

Furthermore, due to the operating method, the movable rotor is formed to be movable in the axial direction, and by engaging the large diameter portion of the lock pin with the large diameter hole of the pin hole of the movable rotor, the movable rotor is moved in the shaft direction. However, since the pin hole of this movable rotor is formed in a relatively thin cylindrical wall, the pin hole can be removed by strongly hitting the front surface of the movable rotor. They were able to destroy the hole wall, move the movable rotor backwards and connect it to the shaft, and illegally unlock the door.

[Problems to be Solved by the Invention] Therefore, an object of the present invention is to not only accurately avoid violent fracture caused by a drill by idling, but also to be strong against fracture caused by hitting in the axial direction, and to have a simple structure. The number of parts has been reduced due to this technology, and by adopting a simplified operating method, there is no need to extremely increase the processing precision of each part, so we provide an idle-running cylinder lock device that can significantly reduce manufacturing and assembly costs. It is to be.

[Means for Solving the Problems] Hereinafter, using the reference numerals in the attached drawings, it will be explained that in the idle rotating cylinder lock device of the present invention, a shaft 2 whose front surface is hidden within a cylinder case 1 is moved in the axial direction. The rotor 4 is rotatably fitted into the cavity 3 of the cylinder case 1 while being prevented from moving, and the rotor 4 is rotatably housed in the cavity 5 of the shaft 2 while being prevented from moving in the axial direction.

Radial pin hole 6 of cylinder case 1 and shaft 2
A driver pin 9, a cord pin 10, and a tumbler pin 11 are sequentially accommodated in the radial pin hole 7 of the rotor 4 and the radial pin hole 8 of the rotor 4. 13, the tumbler pin 1
The operating part 15 that the tip of 1 engages and disengages! Provided on the side of 114.

When W114 is inserted into the play hole 13, the shaft 2 is unlocked from the cylinder case l, and the rotor 4 is locked from the shaft 2. On the other hand, when the key 14 is removed from the play hole 13, the cylinder case The locking of shaft 2 with respect to 1 is established, and the rotor 4 with respect to shaft 2 is established.
The lengths of the driver pin 9, cord pin 10, and tumbler pin 11 and the depth of the operating part 15 are set so that the lock is released.

[Function] When using this idle-rotating cylinder lock device, for example, the cylinder case 1 is fixed to the door 16 of the equipment storage box, and the shaft 2 has a stop plate 19 that engages and disengages from the holder l8 on the box body 17 side. is fixed.

Engage the stopper plate 19 with the receiver 18 to close its box body 1.
After locking at 7, from keyhole 13! When you remove 114,
Due to the bias of the spring 12, the driver pin 9, the cord pin 10, and the tumbler pin 11 slide inside each pin hole 6, 7.8, and the tip of the tumbler pin 11 protrudes into the keyhole 13 of the rotor 4. do.

In this key removal state, the contact point between the driver pin 9 and the cord pin 10 is not on the shear line between the cylinder case 1 and the shaft 2, and the driver pin 9 is in the pin hole 6 of the cylinder case 1 and the pin hole 7 of the shaft 2. Since they are straddled, the shaft 2 is locked to the cylinder case 1, and the shaft 2 cannot rotate.

On the other hand, since the contact point between the cord pin 10 and the tumbler pin 11 is located on the shear line between the shaft 2 and the rotor 4, the shaft 2 is unlocked from the rotor 4, and the rotor 4 can rotate. It is.

Here, when the drill tip is applied to the keyhole 13 of the rotor 4 and the drill is rotated, the rotor 4 simply rotates along with the drill, and no rotational force is transmitted to the shaft 2. Therefore, The stop plate 19 is held precisely in the locked position where it engages with the receiver 18.

When the key 14 is inserted into the keyhole 13, the operating section 15 pushes the tumbler pin 11 a predetermined distance, so that the code pin 10
The contact point of the tumbler pin 11 is the shaft 2 and the rotor 4.
Move the tumbler pin 11 from above the shear line between
straddles the pin hole 8 of the rotor 4 and the pin hole 7 of the shaft 2, so that the shaft 2 is locked to the rotor 4.

On the other hand, since the contact point between the driver pin 9 and the cord pin 10 is on the shear line between the cylinder case 1 and the shaft 2, the shaft 2 is unlocked from the cylinder case 1, and the shaft 2 becomes rotatable. Here, by turning the key 14, the rotor 4 and the shaft 2 are driven to rotate together, and the stop plate 19 is rotated to the unlocked position where it is separated from the receiver 18.

[Embodiment] In the illustrated embodiment, an annular recess 20 is provided in the front wall of the cylinder case l by enlarging the front end of the cavity 3.

The cylindrical body of the shaft 2 is provided with two sets of five pin holes 7 that are diametrically staggered and face each other. It is fitted into the annular recess 20.

A stop plate 19 and a rotation angle regulating plate 27 are fitted into the square shaft portion 22 of the shaft 2 protruding from the rear end of the cylinder case 1, and are fixed by a nut 24 screwed onto the screw shaft portion 23. The shaft 2 is provided with an annular receiving groove 25 immediately before the square shaft portion 22, and a locking ring 26 is fitted in the annular receiving groove 25. A zero rotation angle regulating disc 27 is located at the rear of the cylinder case 2. The shaft 2 is engaged with and disengaged from the end protrusion 28.
The rotation angle is restricted to 90 degrees.

The shaft 2 is prevented from being pulled out rearward by the collar portion 21 coming into contact with the inner bottom surface 20a of the four annular portions 20 of the cylinder casing.
The shaft 2 is prevented from being pulled out forward by coming into contact with the inner bottom surface 29a of the four rear parts 29 of the cylinder case l.

A flange 35 protruding from the outer periphery of the front end of the rotor 4 is connected to the shaft 2.
It overlaps the front side of the flange 21 and is partially fitted into the annular recess 20 of the cylinder case 1. Rear end annular groove 31 of rotor 4
The tip of a fixing pin 31 driven into the shaft 2 is inserted into the shaft 2, thereby preventing the rotor 4 from being removed.

The operating portion 15 is formed in a circular four-part shape on both sides of the key 14. A mounting nut 32 is screwed into the threaded cylinder portion of the cylinder case l with both sides removed. By changing the length of the code pin 10, a large number of different keys can be obtained. The biasing spring 12 is composed of a compression coil spring, one end of which is inserted into the proximal recess of the driver pin 9, and the other end of which is fitted into a long side groove 33 of the cylinder case l and comes into contact with a spring retaining plate 34 fixed thereto. There is.

[Effects of the Invention] As described above, in the idle-rotating cylinder lock device of the present invention, when the keyhole 914 is removed from the keyhole 13, the shaft 2 is locked to the cylinder case 1, while the rotor 4 is locked to the shaft 2. The lock is released, and if the drill is driven by applying the cutting edge to the keyhole 13 of the rotor 4, the rotor 4 will idle by itself and no rotational force will be transmitted to the shaft 2, so the drill Violent destruction and unauthorized unlocking are accurately prevented.

In addition, the shaft 2 whose front face is hidden inside the cylinder case 1 prevents the cylinder case 1 from moving in the axial direction.
Since the rotor 4 is fitted into the hollow part 3 of the shaft 2 and prevented from moving in the axial direction, the rotor 4 and the shaft 2 can be extracted and destroyed by hitting the front surface of the rotor. It also cannot be unlocked illegally.

Furthermore, the structure is greatly simplified and the number of parts is reduced compared to the conventional device, and when locking and unlocking the shaft 2 and rotor 4, the driver pin 9 and the cord pin are used. 10 and tumbler pin 11 [! It adopts a simplified operating system that moves in the radial direction following the insertion and removal of the parts, and there is no need to extremely increase the processing accuracy of each part, which significantly reduces manufacturing and assembly costs. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an idle cylinder lock device according to an embodiment of the present invention, and FIG. 2 is a rear view of the cylinder lock device. 3 is a sectional view taken along the line AA in FIG. 1, and FIG. 4 is a sectional view taken along the line BB in FIG. 3. FIG. 5 is a sectional view corresponding to FIG. 4 when the key is inserted.

Claims (1)

[Claims] The shaft 2, whose front surface is hidden inside the cylinder case 1, is rotatably fitted into the cavity 3 of the cylinder case 1 while preventing its axial movement, and the rotor 4 is prevented from moving in the axial direction. A driver pin 9 and a cord pin 10 are rotatably housed in the cavity 5 of the cylinder case 1, the radial pin hole 7 of the shaft 2, and the radial pin hole 8 of the rotor 4. and tumbler pin 11
are sequentially accommodated and biased to slide toward the keyhole 13 in the axial direction of the rotor 4 by the spring 12, and an operating part 15 is provided on the side surface of the key 14 to which the tip of the tumbler pin 11 engages and disengages.
When the key 14 is inserted into the keyhole 13, the shaft 2 is unlocked from the cylinder case 1, and the rotor 4 is locked from the shaft 2. On the other hand, when the key 14 is removed from the keyhole 13, the cylinder case shaft 2 for 1
The driver pin 9 and the cord pin 10 are locked so that the rotor 4 is unlocked from the shaft 2.
The length of the tumbler pin 11 and the depth of the operating part 15 are set.