JP3804958B2 - padlock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, when the shackle is locked at the insertion position in the socket hole of the case by the plug incorporating the locking mechanism, and when the locking shaft of the plug is unlocked by the key, the shackle is released to the removal position. It relates to a protruding padlock.
[0002]
[Prior art]
For a padlock that allows the plug to be replaced when the key is lost or imitated, a locking seat protrudes from the bottom lid of the case that hits the bottom of one socket hole, and is fitted to the upper end of the locking seat. A lateral groove for installing the plug is provided, and a fitting recess is provided on the outer peripheral surface of the plug corresponding to the horizontal groove, and the fitting plug is pressed toward the outer peripheral surface of the plug by a compression coil spring inserted into the horizontal groove, A device is known in which a tip is engaged with a fitting recess and a plug is fixedly held in a plug housing hole of a case (see, for example, Patent Document 1).
[0003]
With this padlock, for example, if you want to replace the plug because you lost the regular key, insert the spare key into the keyhole of the rotor of the plug, turn the rotor with the key to unlock the shackle, and then plug the shackle into the socket Project from the hole. Then, a rod-like replacement tool is inserted into the upper opening of the lateral groove through the vacated socket hole, and the tip of the replacement tool is inserted into the annular groove on the head of the fitting plug. The fitting plug is pulled out from the fitting depression against the bias of the compression coil spring by being moved.
[0004]
However, in the dim and difficult to see space in the inner bottom of the socket hole, the operation of inserting the tip of the replacement tool into the annular groove of the fitting plug through the upper surface opening of the lateral groove is not easy in practice. Even if the tip of the replacement tool can be once inserted into the annular groove, the replacement tool may be shaken when the replacement tool is moved laterally or the replacement tool may be bent in the middle. The tip of the tool is easily detached from the annular groove, and it has not been easy to pull out the fitting plug from the fitting recess quickly and accurately.
[0005]
[Patent Document 1]
Japanese Patent No. 2911880 [0006]
[Problems to be solved by the invention]
Therefore, the subject of this invention is providing the padlock which can perform the replacement | exchange operation of the plug with the replacement tool simply and accurately.
[0007]
[Means for Solving the Problems]
Hereinafter, referring to reference numerals in the accompanying drawings, a padlock of the present invention, the leg portion is inserted into or removed from the socket hole 2 of the case 1, the shackle 3 spring guide portion 3a is formed by extending the ends of the legs A spring 23 that is fitted around the spring guide portion 3a and accommodated in the socket hole 2 and urges the shackle 3 in the direction of pushing the shackle 3 out of the socket hole ; And a plug 5 that locks the plug 3 in the insertion position. The set pin 7 is accommodated and held in a pocket 6 formed on the outer peripheral surface of the plug 5 so as to be retractable. A pin receiving hole is formed on the inner peripheral surface of the plug receiving hole 4. 8 is formed, and the set pin 7 protruding and biased by the spring member 9 is engaged with the pin receiving hole 8 so that the plug 5 cannot be removed from the plug receiving hole 4, and the tool is inserted on the extension line of the pin receiving hole 8. Hole 10 is straight Formed, closing the tool insertion hole 10 by the spring guide portion 3a is disposed so as to cross the tool insertion hole 10 in the inserted state of the shackle 3, the replacement tool 11 inserted into the tool insertion hole 10 in the withdrawal state of the shackle 3 Thus, the set pin 7 is linearly pressed and retracted into the pocket 6.
[0008]
[Effects of the Invention]
In this padlock, for example, when the plug 5 is to be replaced as a result of losing the regular key, the spare key 12 is inserted into the key hole 27 of the rotor 13 of the plug 5, and the rotor 13 is rotated by the key 12 to thereby rotate the shackle 3. The shackle 3 is released from the socket hole 2 by the bias of the spring 23, the spring guide portion 3a of the shackle 3 that has entered the tool insertion hole 10 is escaped from the tool insertion hole 10, and the tool insertion hole 10 is released. To unblock.
[0009]
The replacement tool 11 is inserted into the tool insertion hole 10 that has been unblocked by the removal of the shackle 3, and the set pin 7 is linearly pressed toward the outer peripheral surface of the plug 5 by pushing the replacement tool 11. The set pin 7 is withdrawn from the pin receiving hole 8 and retracted into the pocket 6.
[0010]
When the set pin 9 is retracted, the restriction of the plug 5 with respect to the case 1 is released, and the plug 5 is removed from the plug housing hole 4.
When the new plug 5 is fitted into the plug receiving hole 4, the set pin 7 is pushed into the pocket 6 and held by the fingertip. When the plug 5 is fitted to a predetermined position of the plug receiving hole 4 and the pocket 6 and the pin receiving hole 8 come to face each other, the tip of the set pin 7 is biased by the spring member 9 so that the tip portion of the set pin 7 is pin receiving hole 8. Engage immediately. Thereby, the replacement of the plug 5 is completed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In the embodiment shown in FIGS. 1 and 2, the plug 5 has a cylinder lock structure, and the plug body 14 has an oval cross-sectional shape and is non-rotatably fitted in the plug receiving hole 4 having the same shape. A rotation angle restricting plate 15 and a cam disc 16 are fitted to the tip of the rotor 13, and a passive cam groove 19 of a latch body 18 is fitted to an eccentric cam projection 17 of the cam disc 16.
The leg portions of the U-shaped shackle 3 are fitted in the socket holes 2 and 2 formed on the left and right sides of the plug housing hole 4. The front end of the latch body 18 is engaged with and disengaged from the side groove 20 of the short leg on the right side.
[0012]
An annular groove 22 that engages with the locking ball 21 is formed in the longer leg portion on the left side, and a spring guide portion 3 a formed to extend at the end of the leg portion is disposed so as to cross the tool insertion hole 10. When the shackle 3 is in the insertion position, the tool insertion hole 10 is closed.
When the rotor 13 of the plug 5 is rotated in the unlocking direction with a key, the latch body 18 is released from the side groove 20, so that the shackle 3 is unlocked from the case 1, and the shackle 3 is attached with the pushing spring 23. The shorter leg is pulled out from the socket hole 2 by being pushed by the force.
[0013]
When the shackle 3 protrudes to the unlocking position in this manner, the spring guide portion 3a of the longer leg is retracted to the position extracted from the tool insertion hole 10, and the rod-shaped replacement tool 11 can be inserted. Become.
The pocket 6 is formed at right angles to the central axis of the plug 5, and the set pin 7 having a base having a large diameter is inserted into the pocket 6, and then the opening edge of the pocket 6 is crimped and deformed inward. As a result, dropping from the pocket 6 is prevented. The spring member 9 is composed of a compression coil spring.
[0014]
As the lock mechanism built in the plug 5, a known lock mechanism such as a disc tumbler type lock mechanism, a pin tumbler type lock mechanism, an axial pin tumbler type lock mechanism can be appropriately selected and used. The rotor and shackle 3 of the plug 5 can be used. An interlocking mechanism or locking mechanism between them is also limited to the above-described one, and a known mechanism used for a general padlock can be appropriately selected.
[0015]
A cam slope is formed at the tip of the set pin 7 to form a latch operation type, and when the plug 5 is fitted, the cam surface is brought into sliding contact with the edge surface of the plug receiving hole 4 to move the set pin 7 forward and backward. The set pin 7 can be automatically engaged with the pin receiving hole 8 when the plug 5 is completely fitted.
[0016]
In addition, the operating principle of the padlock is not limited to a method in which when the shackle slides for a certain stroke, only the shorter leg part comes out of the socket hole and the shackle rotates around the longer leg part, When the shackle slides for a certain stroke, both of the legs of the shackle may be removed from the socket hole at the same time.
[0017]
【The invention's effect】
As described above, in the padlock of the present invention, the set pin 7 is accommodated and held in the pocket 6 formed on the outer peripheral surface of the plug 5 so as to be able to protrude and retract, and the pin receiving hole 8 is formed on the inner peripheral surface of the plug receiving hole 4. The set pin 7 protruding and biased by the member 9 is engaged with the pin receiving hole 8 to restrain the plug 5 from being unplugged from the plug receiving hole 4, and the tool insertion hole 10 is linearly formed on the extended line of the pin receiving hole 8. A spring guide portion 3a is formed at the end of the leg portion of the shackle 3 that is formed and inserted into and removed from the socket hole of the case 1, and is fitted around the spring guide portion 3a to accommodate the push biasing spring 23 in the socket hole 2. , closing the tool insertion hole 10 by the spring guide portion 3a is disposed so as to cross the tool insertion hole 10 in the inserted state of the shackle 3, replacement inserted into the tool insertion hole 10 in the withdrawal state of the shackle 3 Since the set pin 7 is linearly pressed by the tool 11 and retracted into the pocket 6, even if the set pin 7 is disposed in a portion that is dim and difficult to visually recognize, the replacement tool 11 is simply linearly moved. By a simple operation of pushing and pushing, the set pin 7 can be quickly and accurately moved to the retracted position, and the replacement work of the plug 5 can be performed smoothly and efficiently.
[Brief description of the drawings]
FIG. 1 is a front view of a principal part of a padlock according to an embodiment of the present invention, in which a shackle is in a locked position.
FIG. 2 is a left side view of the padlock of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 2 Socket hole 3 Shackle 3a Spring guide part 4 Plug accommodation hole 5 Plug 6 Pocket 7 Set pin 8 Pin receiving hole 9 Spring member 10 Tool insertion hole 11 Replacement tool 12 Key 13 Rotor

Claims (1)

A leg part is inserted into and removed from the socket hole 2 of the case 1, a shackle 3 having a spring guide part 3a extended at the end of the leg part, and fitted around the spring guide part 3a to be received in the socket hole 2, A spring 23 that biases the shackle 3 in the direction of pushing out the socket hole 2 and a plug 5 that is provided in the plug receiving hole 4 of the case 1 and locks the shackle 3 in the insertion position are provided. A set pin 7 is accommodated and held in a pocket 6 formed on the surface so as to be retractable, a pin receiving hole 8 is formed on the inner peripheral surface of the plug receiving hole 4, and the set pin 7 projected and urged by a spring member 9 is pin receiving hole 8, the plug 5 is restrained so that it cannot be removed from the plug receiving hole 4, a tool insertion hole 10 is formed linearly on the extension line of the pin receiving hole 8, and the tool insertion hole 10 is formed in the inserted state of the shackle 3. Cross Closing the tool insertion hole 10 by the spring guide portion 3a which is arranged to, Shisabotsu the set pin 7 by the replacement tool 11 inserted into the tool insertion hole 10 in the withdrawal state of the shackle 3 linearly pressing the pocket 6 Padlock that was made to let you.

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