JPS637671Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an axial pin tumbler lock in which a locking pin is arranged parallel to the central axis of rotation of a rotor.

(Prior art) As disclosed in Japanese Utility Model Application Publication No. 52-34789, this type of axial pin tumbler lock has an axial pin hole formed on the lock body side and an axial pin hole formed on the rotor side. A driving pin and a driven pin are slidably inserted into the pin hole, and a spring inserted into the bottom of the pin hole on the lock body side urges the driving pin forward to engage the front end of the driving pin with the rotor side pin hole. This locks the rotor to the lock body in a non-rotatable manner.

(Problems to be Solved by the Invention) By the way, by attaching a stopper to the rear end of the rotor and engaging this stopper with a receiver on a fixed frame such as a building or box body, The door to which the lock body is attached is locked to the fixed frame, and in order to bring the door into close contact with the fixed frame, the engagement between the catch and the catch is generally done by butting. ing. Therefore, when the stopper reaches the locking position, a reverse rotational moment in the unlocking direction is exerted on the rotor due to the repulsive force from the abutment.
Due to this reverse rotation moment, the driven pin receives a large side pressure and is strongly pressed against the inner peripheral surface of the pin hole on the rotor side, so even if the key is pulled out of the lock body after the locking operation, the driven pin will not slide the required stroke. ,
The drive pin may become stuck in the pin hole on the lock body side.

When the entire length of the drive pin is recessed into the pin hole on the lock body side, the rotor cannot be locked to the lock body, but due to the abutment and latching of the clasp and receiver, The rotor is temporarily stopped rotating. If you mistakenly believe that the lock has been completed by stopping the rotation of the rotor and leave the lock as it is without operating it again, the following fatal situation will occur.

In other words, when the latch between the stopper and the receiver loosens due to vibration or impact, and the rotor rotates slightly within a range that cannot reach the unlocked position, the pin hole on the rotor side and the lock body Because the side pin holes are misaligned, the lock can no longer be operated with the key, and the door cannot be opened without removing or breaking the lock.

The axial pin tumbler lock has a regulating means that ensures alignment between the pin hole on the rotor side and the pin hole on the lock body side, and can avoid the lock from becoming inoperable due to loosening of the lock due to the interference between the stopper and the receiver. , has already been filed (Jitsuganaki)
No. 56-44463), but the purpose of the present invention is to expand the allowable range of dimensional errors during the manufacturing of parts by providing means for aligning the rotor and key in the axial pin tumbler lock. be.

(Means for Solving the Problems) The gist of the present invention will be explained below with reference to the drawings. The main points of the present invention are: the lock body 1; the rotor 3 accommodated in the shaft hole 2 of the lock body 1; and the rotor 3 formed on the lock body 1 side. a driving pin 6 and a driven pin 7 inserted into the axial pin hole 4 formed on the rotor 3 side;
a spring 8 that urges the drive pin 6 to partially protrude from the pin hole 4; a stopper 9 attached to the rear end of the rotor 3; A key 1 that is completely inserted into the pin hole 4 to unlock the rotor 3 from the lock body 1.
0; a regulating body 11 that is attached to the lock body 1 and does not rotate about the axis of the rotor 3; and the regulating body 1;
1, and a receiving part 12 with which a protrusion 13 at the front end of the rotor 3 engages in a non-rotatable manner. In an axial pin tumbler lock in which the receiving portion 12 of the body 11 is engaged with the protrusion 13 of the rotor 3, a blind hole 19 is provided in the inner bottom of the key 10, with which the protrusion 13 of the rotor 3 is non-rotatably engaged;
A conical depression 21 is provided at the center of the inner bottom surface of the blind hole 19, and a protrusion 2 is provided at the center of the front surface of the protrusion 13.
0 into the recess 21.

(Embodiment) In the illustrated embodiment, the regulating body 11 is shaped like a rectangular lid plate, and the receiving portion 12 is constituted by a cross-shaped recess provided at the center of the back surface of the regulating body 11. A protrusion 13 having a rectangular longitudinal section is formed at the front end of the rotor 3 . Correspondingly, blind hole 1
9 is also formed to have a rectangular cross section.

A bearing cylinder part 14 is provided at one end of the regulating body 11, a bearing cylinder part 15 is provided at the front end side of the lock body 1, and a pivot pin 16 is inserted into the bearing cylinder parts 14 and 15. Accordingly, the regulating body 11 is pivotally connected to the lock body 1 so as to be openable and closable.

The pivot pin 16 is disposed in a direction crossing the rotation center axis of the rotor 3, and when the protrusion 13 is engaged with the receiving portion 12, the rotor 3
becomes unrotatable relative to the regulating body 11, and the regulating body 1
1 cannot rotate relative to the lock body 1. A semicircular stepped surface 18 for pushing the driven pin 7 is provided on the outer peripheral surface of the cylindrical key 10.

In the axial pin tumbler lock of this embodiment, after rotating the rotor 3 with the key 10 so that the stopper 9 comes to the locking position, the protrusion 13 of the regulating body 11 is engaged with the receiving part 12 of the rotor 3. In order to
Rotation of is prevented regardless of the built-in driven pin 7 and drive pin 6.

Therefore, a reverse rotation moment is applied to the rotor 3 due to the butt and latching of the receiver 27 on the fixed frame 26 side and the stopper 9, and when the key 10 is removed as described above, the drive pin 6 is moved to the rotor 3. Even if the drive pin 6 does not enter the pin hole 5 on the side as specified and the rotation of the rotor 3 cannot be stopped by the drive pin 6, the pin hole 5 on the rotor side and the pin hole 4 on the lock body side are aligned on the same straight line. Retained. Therefore, when the stopper 9 and the receiver 27 are loosened, the positions of the pin holes 4 and 5 will not shift and the key 10 will not be able to operate.

(Effect of the invention) As described above, in the axial pin tumbler lock of the present invention, there is a protrusion 2 at the center of the front surface of the protrusion 13 of the rotor 3.
0 protrudes, a recess 21 is provided at the center of the inner bottom surface of the blind hole 19 of the key 10, and the protrusion 20 is engaged with the recess 21, thereby accurately centering the rotor 3 and the key 10. Therefore, the allowable range of dimensional errors can be expanded when manufacturing parts such as rotors. As a result, the incidence of defective parts can be suppressed to a lower level, and the manufacturing cost of the entire lock can be reduced.

[Brief explanation of the drawing]

The drawings show an axial pin tumbler lock according to an embodiment of the present invention, FIG. 1 is a front view of the axial pin tumbler lock when the regulator is closed, and FIG. 2 is a front view of the axial pin tumbler lock when the regulator is closed. It is a bottom view. Third
The figure is a front view of the axial pin tumbler lock when the regulator is open, and FIG. 4 is a bottom view of the axial pin tumbler lock when the regulator is open. Figure 5 is A- in Figure 2.
FIG. 6 is a cross-sectional view taken along line B-B' in FIG. 3; FIG. 7 is a rear view of the key, FIG. 8 is a right side view of the key, and FIG. 9 is a sectional view taken along the line CC' in FIG. 7. 1...Lock body, 2...Shaft hole, 3...Rotor, 4
... Pin hole on the lock body side, 5 ... Pin hole on the rotor side, 6 ... Drive pin, 7 ... Driven pin, 8 ... Pin biasing spring, 9 ... Clasp, 10 ... Key, 11
... Regulatory body, 12 ... Receiving part, 17 ... Door, 20 ...
... Protrusion, 21 ... Recess, 26 ... Fixed frame, 27
...Receipt of money.

Claims (1)

[Scope of utility model registration request] The lock body 1; the rotor 3 accommodated in the shaft hole 2 of the lock body 1; and the rotor 3 inserted into the axial pin hole 4 formed on the lock body 1 side and the axial pin hole 5 formed on the rotor 3 side. a driving pin 6 and a driven pin 7; a spring 8 that urges the driving pin 6 to partially protrude from the pin hole 4; a stopper 9 attached to the rear end of the rotor 3; The driving pin 6 is completely inserted into the pin hole 4 via the driven pin 7,
Key 10 for unlocking the rotor 3 to the lock body 1
and a regulating body 11 that is attached to the lock body 1 and does not rotate about the axis of the rotor 3; and a regulating body 11 that does not rotate about the axis of the rotor 3.
and a receiving portion 12 with which a protrusion 13 at the front end of the rotor 3 engages in a non-rotatable manner.
In an axial pin tumbler lock in which the rotor 3 is rotated with the key 10 so as to come to the locked position, the receiving part 12 of the regulating body 11 is engaged with the protrusion 13 of the rotor 3. 13 is provided in the inner bottom of the key 10 with a blind hole 19 in which the key 13 is non-rotatably engaged;
A conical depression 21 is provided at the center of the inner bottom surface of the blind hole 19, and a protrusion 2 is provided at the center of the front surface of the protrusion 13.
An axial pin tumbler lock characterized in that 0 is engaged with the recess 21.