JP2000064675A - Pin tumbler lock and pin tumbler lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pin tumbler lock of changeable structure without removing a bolt and a nut for fitting a lock to a machine or the like. SOLUTION: A fixed body 6 and a rotating body 7 provided with a lock shaft 18 fittingly inserted in a fitting insert hole of the fixed body 6 are integrated into a cylindrical case 2. Code pins 10 are respectively inserted in the specified number of through pinholes 21 bored in a large diameter part of the rotating body 7. Under-pins 24 energized by springs 33 are inserted in pin insert holes 22 provided in the corresponding positions of the fixed body 6, and engaged to fix the rotating body 7 at the time of locking. Engaging protruding parts 15 are formed on the outer surface of the fixed body 6, and these engaging protruding parts 15 are inserted along guide grooves formed at a base 3 and fitted into opening part 34 formed orthogonally to the guide grooves. In this case, the code pins 10 are pushed in by a first key for changing a lock to make the rotating body 7 rotatable to the fixed body 6, and with rotation by one space part of the pin hole 21, a return pin 27 and a stopper 37 face each other. At this time, the return pin 27 is inserted by a second key. The stopper pin 37 therefore slips out to make the fixed part rotatable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin tumbler lock and a pin tumbler lock device.

[0002]

2. Description of the Related Art A pin tumbler lock in which code pins are arranged on the circumference is widely used because it is difficult to forge a key. And like ordinary locks, each pin tumbler lock has its own unique key, and other pin tumbler locks generally cannot be unlocked or locked. Target. However, the pin tumbler lock attached to the door of a machine such as a pachinko machine or a vending machine is equipped with each key corresponding to each pin tumbler lock, that the administrator possesses the key for the number of machines,
Each time the key is unlocked or locked, the required key is selected from a large number of keys, which is not practical. So, for example,
It is common practice to use a pin tumbler lock that can be unlocked and locked with a common key for each machine maker to reduce the number of keys to be stored and carried. In such a case, if this common key is lost or stolen, you can remove the pin tumbler lock from all machines equipped with the pin tumbler lock corresponding to that key and replace it with another pin tumbler lock. Will be needed. When replacing the pin tumbler lock, for example, unlock the lock with a spare key or master key to open the door, and turn the bolts and nuts that attach the lock from the back side of the door to remove the pin tumbler lock from the door, An appropriate lock mechanism connected to the lock and the lock are disassembled, and a new pin tumbler lock is reattached. Such a pin tumbler lock replacement operation is complicated and it is difficult to quickly respond to it, which may seriously affect sales and crime prevention.

[0003]

The present invention was created as a result of earnest research in view of the above-mentioned actual circumstances,
A pin tumbler lock that can be used to replace only the lock from the front side while attached to a machine, that is, turn the bolts and nuts that attach the lock to remove the lock from the machine, etc., and connect it to the lock as appropriate. An object of the present invention is to provide a pin tumbler lock in which the lock can be exchanged without disassembling the lock mechanism and the lock or reattaching a new lock. Another object of the present invention is to provide a lock device provided with a base for exchanging only the lock from the front side while the pin tumbler lock is mounted on a machine or the like.

[0004]

In order to solve the above problems, a pin tumbler lock according to the present invention is provided in a cylindrical case having a key insertion opening formed in a front surface thereof and in a rear portion of the case. A fixed body in which a fitting insertion hole penetrating from the front end surface to the rear end surface is formed, and a lock shaft extending from the central portion of the rear end surface of the rotating portion is fitted in the fitting insertion hole, and the front end surface of the fixed body is formed. A rotary body that is in contact with the rear end surface of the rotary part and is rotatable about the axis of the lock shaft, and a cord inserted into a predetermined number of through-pin holes formed on the circumference around the axis of the rotary part. Pins, and underpins inserted by being biased into the pin insertion holes formed in the fixed body in the same number so as to communicate with the through pin holes,
The fixing body has a return pin inserted into a through hole formed on the circumference having the same radius as the circumference around the axis of the fixing body, and is formed to project from the outer surface of the fixing body and / or the case. It is characterized in that the engaging projection is formed (claim 1).

This pin tumbler lock device has a cylindrical case having a key insertion opening formed in the front surface thereof and a fitting insertion hole formed in the rear portion of the case and penetrating from the front end surface to the rear end surface. And the lock shaft extending from the central portion of the rear end surface of the rotating portion is fitted into the fitting hole, and the front end surface of the fixed body and the rear end surface of the rotating portion are in sliding contact with each other and centered on the axis of the lock shaft. A rotatable rotating body, code pins respectively inserted in a predetermined number of through-pin holes formed on the circumference around the axis of the rotating portion, and a fixed body so as to communicate with the through-pin holes. Underpins that are respectively biased and inserted into the pin insertion holes that are drilled in the same number, and return pins that are inserted in through holes that are drilled on the circumference of the same radius as the circumference around the axis of the fixed body. A pin and has an engaging protrusion that projects from the outer surface of the fixed body and / or the case. And a cylinder lock that formed by,
A guide groove for accommodating and accommodating the pin tumbler lock and having a guide groove for guiding the engagement protrusion has a cylindrical inner wall formed parallel to the axis, and has a predetermined length for locking the engagement protrusion. A front portion having a notched window formed at right angles to the guide groove, a sliding contact surface with the rear end surface of the fixed body, and an opening hole centered on the axis and a pin hole are formed so as to communicate with the through hole. It is characterized by comprising a rear portion provided and a base composed of a stopper pin which is biased and inserted into the pin hole (claim 2).

In order to assemble the pin tumbler lock device using the pin tumbler lock with such a structure, first, the engaging protrusion of the pin tumbler lock is engaged with the guide groove of the base, and the pin tumbler lock is axially moved. The lock shaft is inserted into the opening hole of the base, and the rear end surface of the fixed body and the sliding contact surface of the rear portion of the base are brought into contact with each other. Next, the pin tumbler lock is rotated about the axis, for example, in the clockwise direction integrally by a predetermined angle to bring the rear end surface of the fixed body into sliding contact with the sliding contact surface of the rear portion of the base while engaging the engaging protrusion. Sliding along the cutout window to connect the through hole through which the return pin of the fixed body is inserted with the pin hole of the base, the tip of the stopper pin enters the through hole due to the urging force to the stopper pin. It will be. As a result, the pin tumbler lock is connected to the base, and the pin tumbler lock device can be assembled. In this state, this locking device is attached to a machine or the like, and locking and unlocking operations are performed with a predetermined key.

Remove the pin tumbler lock from the base,
When replacing with another pin tumbler lock, insert the first key for replacement, which will be described later, from the front side of the machine etc. into the key insertion slot and resist the biasing force to the underpin and the rear end of the code pin and the underpin. The abutting position of the tip of the rotor is made to coincide with the sliding contact position of the rear end face of the rotating part and the front end face of the fixed body, and the first key is rotated in the counterclockwise direction to rotate the rotor in the counterclockwise direction by a predetermined angle. It is rotated to bring the rear end of the predetermined code pin into contact with the front end of the return pin, and remove the first key for replacement. Then
Insert the second key for replacement into the key insertion port, press the code pin backward against the urging force to the stopper pin, and let the rear part of the code pin enter the through hole of the fixed body, and the rear end of the return pin. By aligning the contact position of the tip of the stopper pin with the contact position of the rear end surface of the fixed body and the sliding contact surface of the rear portion of the base, and further rotating the second key for replacement counterclockwise,
While sliding the engaging protrusion of the pin tumbler lock along the cutout window of the base, the pin tumbler lock is integrally rotated counterclockwise about the axis. As a result, the connection between the pin tumbler lock and the base can be released. Then, the pin tumbler lock can be separated from the base by sliding the pin tumbler lock in the axial direction at a position where the engaging protrusion of the pin tumbler lock can slide along the guide groove of the base.

Further, the pin tumbler lock according to the present invention has a cylindrical case having a key insertion opening formed in the front surface thereof, and a fitting insertion hole penetrating from the front end surface to the rear end surface provided in the rear portion of the case. And the lock shaft extending from the central portion of the rear end surface of the rotating portion is fitted into the fitting insertion hole, and the front end surface of the fixed body and the rear end surface of the rotating portion are slidably contacted to each other. A rotating body that is rotatable about an axis, code pins that are respectively inserted into a predetermined number of through-pin holes that are formed on the circumference around the axis of the rotating portion, and a fixed body that communicates with the through-pin hole. Underpins inserted by being biased in the same number of pin insertion holes, and inserted into through holes formed on the circumference of the same radius as the circumference centered on the axis of the fixed body. A fixed return pin and an outer surface from the rear end of the fixed body and / or the case. Which may be characterized in that the engagement groove in which the second groove portion having a predetermined length is connected to orthogonal first groove and a line which is parallel thereto is formed (claim 3).

In this pin tumbler lock device, a cylindrical case having a key insertion opening formed in the front surface and a fitting insertion hole penetrating from the front end surface to the rear end surface provided in the rear portion of the case are provided. The fixed body that has been bored and the lock shaft that extends from the central portion of the rear end surface of the rotating portion are inserted into the fitting insertion holes, and the front end surface of the fixed body and the rear end surface of the rotating portion are in sliding contact with each other and the axis line of the lock shaft is formed. And a code pin inserted into each of a predetermined number of through pin holes formed on the circumference around the axis of the rotating portion, and a fixed body that communicates with the through pin hole. As described above, the underpins are biased and inserted into the same number of pin insertion holes, and are inserted into the through holes formed on the circumference of the same radius as the circumference around the axis of the fixed body. A return pin, and an axis line from the rear end of the fixed body and / or the case to the outer surface. And a pin tumbler lock in which an engaging groove is formed by connecting a first groove portion and a second groove portion having a predetermined length orthogonal to the first groove portion, and the pin tumbler lock is accommodated in the engaging groove. A front part having a cylindrical inner wall formed with protruding projections protruding in the radial direction, and an opening hole having a sliding contact surface with the rear end surface of the fixed body and having an axial center, and the through hole. A rear portion having a pin hole so as to communicate with
It may be provided with a base formed of a stopper pin that is biased and inserted into the pin hole (claim 4).

In order to assemble the pin tumbler lock device using the pin tumbler lock with such a structure, first, the first groove portion of the engaging groove of the pin tumbler lock is engaged with the protruding portion of the base, and the pin is rotated. The tumbler lock is slid in the axial direction, and the rear end surface of the fixed body and the sliding contact surface of the rear portion of the base are brought into contact with each other while inserting the lock shaft into the opening hole of the base. Next, the pin tumbler lock is rotated integrally around the axis, for example, in the clockwise direction by a predetermined angle to bring the rear end surface of the fixed body into sliding contact with the sliding contact surface of the rear portion of the base, and to the second groove portion. When the protruding part is engaged and slid so that the through hole through which the return pin of the fixed body is inserted and the pin hole of the base communicate with each other, the tip end portion of the stopper pin is urged by the urging force to the stopper pin. Will break into. As a result, the pin tumbler lock is connected to the base, and the pin tumbler lock device can be assembled. In this state, this locking device is attached to a machine or the like, and locking and unlocking operations are performed with a predetermined key.

When removing the pin tumbler lock from the base and replacing it with another pin tumbler lock, a first key for replacement as will be described later is inserted into the key insertion opening from the front side of the machine or the like to apply a biasing force to the underpin. With the contact position of the rear end of the cord pin and the tip of the underpin being in a state of being matched with the sliding contact position of the rear end face of the rotating portion and the front end face of the fixed body, the first key is rotated counterclockwise. Then, the rotating body is rotated counterclockwise by a predetermined angle, the rear end of a predetermined code pin is brought into contact with the front end of the return pin, and the first key for replacement is removed. Then, the second replacement key is inserted into the key insertion opening, the code pin is pressed backward against the urging force to the stopper pin, and the rear portion of the code pin is inserted into the through hole of the fixed body, and the return pin Matching the contact position between the rear end and the tip of the stopper pin to the contact position between the rear end surface of the fixed body and the sliding contact surface of the rear portion of the base, and further rotating the second key for replacement counterclockwise. Then, the pin tumbler lock is integrally rotated in the counterclockwise direction about the axis while the projection of the base is engaged with the second groove of the pin tumbler lock and slid. This allows
The connection between the pin tumbler lock and the base can be released. Then, at a position where the first groove portion of the pin tumbler lock engages with the protruding portion of the base and the pin tumbler lock can slide, the pin tumbler lock is slid in the axial direction to separate the pin tumbler lock from the base. You can

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in more detail with reference to the drawings. Of course, the present invention is not limited to the following embodiments. 1 is a longitudinal sectional view showing one embodiment of the pin tumbler lock device of the present invention, FIG. 2 is a plan view, FIG. 3 is a sectional view taken along the line AA of FIG. 1, and FIG.
FIG. 3 is an exploded perspective view.

The pin tumbler lock device (1) includes a cylindrical pin tumbler lock (2), a base (3) for accommodating and coupling the pin tumbler lock, and a joint (4) connected to the pin tumbler lock. It is shown. As shown in the figure, the pin tumbler lock (2) is
Cylindrical case (5), fixed body (6) fixed to the rear part of the case (5), rotation supported by the fixed body (6) and rotatable in the case (5) And a body (7).

An inward flange portion (9) extending from the peripheral edge of the case to the key insertion opening (8) is formed on the front surface of the case (5), and a part of the flange portion (9) has a key protrusion. A recess (11) is formed to allow passage of parts. The rear surface of the flange portion functions as a stopper with which the tip of a code pin (10) described later comes into contact.
An annular step portion is formed so as to project near the flange portion on the inner wall of the case (5), and the movement of the rotating body (7) in the axial direction is restricted. Further, inside the rear part of the case (5), as shown in FIG. 3, guide grooves (12), (12) having a predetermined depth from the rear end are formed facing each other in parallel with the axis.

The front part of the fixed body (6) is inserted into the rear part of the case (5), and is integrally fixed to the case (5) by a fixing pin (13). The fixed body (6) is inserted into the case (5) by a protrusion having a predetermined length, which is provided on the outer surface of the front part of the fixed body (6) so as to project from the peripheral edge of the front end face in parallel with the axis. (14) and (14) are guide grooves (1) provided in the inner rear part of the case (5).
2) It is carried out by guiding along (12), and is fixed at a predetermined position where the rear part of the fixed body (6) is exposed. On the outer surface of the rear portion of the fixed body (6), engaging projections (15), (15) that engage with a cutout window of a base, which will be described later, are provided in a radial manner so as to face each other.

The fixed body (6) is provided with a fitting insertion hole (16) extending from the central portion of the front end surface toward the rear end surface.
The lock shaft (18) extending rearward from the central portion of the rear end face of the large diameter and short columnar part (17) is fitted in 6), and the front end face of the fixed body (6) and the rotary part ( 17) The rear end surface is in sliding contact with each other and is rotatable. A key engaging portion (19) is provided so as to project from the center of the front end surface of the rotating portion (17), and a notch groove (20) for engaging a key is formed in the key engaging portion (19). Has been done.

In the rotating part (17) of the rotating body (7), a through pin hole (21) is formed on the circumference of a predetermined radius around the axis.
However, for example, the circumference is divided into 6 equal parts (that is, 60 degree intervals)
The second to sixth positions except the first position are drilled in parallel with the axis, and the through pin holes (2
Code pins (10A) to (10E) are inserted in 1), respectively. Therefore, as is apparent from the figure, no through pin hole is formed at a position near the notch groove (20) of the key engaging portion (19) of the rotating portion (17) which is the first position. The length of each code pin is set according to the pin pressing cam groove provided on the key.

On the fixed body (6), on the circumference of the same radius as the penetrating pin hole (21) formed in the rotating portion (17) around the axis, the position is divided into six equal parts. In the second to sixth positions except the first position, bottomed pin insertion holes (22) are bored in parallel with the axis, and coil springs (23) are respectively provided in these pin insertion holes (22). ) And under pins (24A) to (24E) are inserted. The underpin (24) is biased forward by the coil spring (23), the code pin (10) projects forward through the underpin (24), and the code pin is provided on the rear surface of the inward flange portion (9) of the case. The tip of (10) is in contact. The lengths of the underpins are usually the same, legs are provided in the lower part, and a coil spring (23) is mounted around the legs. The length of the legs is such that the key is inserted from the key insertion opening (8) and the code pin is pushed in, and the positions of the rear end of the code pin and the tip of the underpin are the same as the rear end surface of the rotating part (17) and the fixed body. It is set so as not to interfere with the position of (6) which coincides with the sliding contact position of the front end face. The pin insertion hole is not limited to having a bottom, and may extend to the rear end surface of the fixed body (6). In such a case, for example, the pin insertion hole is formed in the fixed body. A stepped portion that receives the coil spring may be provided by forming a large diameter portion from the front end surface to the middle portion and a small diameter portion from the middle portion to the rear.

At the first position on the same circumference as the pin insertion hole formed in the fixed body (6), the through hole (25) is formed in parallel with the axis, and the through hole is formed. (2
5) A coil spring (26) and a return pin (27)
Has been inserted. The through hole (25) has a large-diameter portion from the front end face to the middle portion and a small-diameter portion behind the middle portion to form a step portion for receiving the coil spring (26), and the return pin (27) extends from the through hole (25). It does not fall out. The small diameter portion of the through hole (25) has a return pin (2
The leg of 7) is inserted.

The underpins and the return pins have substantially hemispherical tips so that the rear end surface of the rotating portion (17) and the front end surface of the fixed body (6) can easily rotate by sliding contact with each other.

The rear end portion of the lock shaft (18) is a prismatic portion so that it can be connected to the recess formed in the base end portion of the joint (4). A vertical groove is formed in the prismatic portion, and the prismatic portion is fitted into the concave portion by matching with a vertical protrusion provided in the concave portion of the base end portion of the joint (4), and the rotary body (7) and the joint (4 ) And can be connected at a predetermined angle.

The front part (30) and the rear part (31) of the base (3) are integrated. The front part (30) has a cylindrical shape, and a cylindrical inner wall for accommodating and accommodating the pin tumbler lock (2) is formed, and the pin tumbler lock (2) is formed.
The pin tumbler lock (2) is engaged with the base (3) at a predetermined position by guiding the engaging protrusions (15) and (15) of the pin tumbler lock. It has a pin mechanism for locking the connection between (2) and the base (3) and an opening hole (32) through which the joint (4) is inserted.

As shown in FIG. 5, an annular step portion protruding inward is provided below the inner wall of the front portion (30), and the step portion has guide grooves (33), (33) parallel to the axis. ) Are formed to face each other. Notch windows (34), (34) continuous from the rear end of the guide groove and extending in the clockwise direction orthogonal to the guide groove are formed in the front portion (30) (see FIG. 4). Therefore, the engaging protrusion (1) of the pin tumbler lock (2)
5) and (15) are slid along the guide grooves (33) and (33) to reach the positions of the notch windows (34) and (34), and then rotated clockwise. The joint projection slides along the cutout window, and the end edge of the engagement projection and the end edge of the cutout window engage with each other. The width of the engaging protrusion is different, and the width of the corresponding guide groove is also different, the direction of inserting the engaging protrusion of the pin tumbler lock into the guide groove is determined, and the pin tumbler lock is connected to the base. It is possible to easily discriminate the direction of the movement.

An opening hole (32) centered on the axis is formed in the rear portion (31), and the joint (4) described above is inserted into the opening hole (32). A step portion is provided on the periphery of the opening hole (32) over a predetermined angle (240 degrees in the figure) to accommodate the detent (35) protruding from the outer surface of the front end portion of the joint (4), and the joint (4 )
The rotation range of is set. The rear end of the joint (4) protrudes from the rear part (31), the outer surface is notched parallel to the shaft, and the female screw hole is provided in the axial direction. It can be positioned and fixed with screws. A pin hole (36) is formed in the vicinity of the opening hole (32) in parallel with the axis, and the pin hole (3
6) is a small diameter part from the sliding contact surface of the rear part to the middle part,
A large diameter portion is formed from the intermediate portion to the rear end surface, and a female screw is formed on the rear portion of the pin hole (36). A stopper pin (37) having a small diameter in the front part and a large diameter in the rear part is inserted into the pin hole (36) together with the coil spring (38) from the rear end surface side of the rear part (31), and the rear side of the pin hole (36). A set screw (39) is screwed onto a female screw formed on the portion, and the stopper pin (37) is biased by a coil spring (38) so as to project forward. The pin hole (36) is
The pin tumbler lock (2) is provided at a position communicating with the through hole (25) of the fixed body (6) in a state where the pin tumbler lock (2) is coupled to the base (3). As described above, the engaging protrusions (15) and (15) of the pin tumbler lock (2) have the guide groove (3).
3) and (33) slide along the cutout windows (34) and (3).
When reaching the position of 4), the rear end surface of the fixed body (6) comes into contact with the sliding contact surface of the rear portion (31), and the stopper pin (3
7) is pushed back. Then, the pin tumbler lock (2) is rotated clockwise, and the engaging projection is slid along the cutout window, and the through hole (25) of the fixed body (6) and the pin hole of the rear part (31). When it reaches a position where it communicates with (36), the tip of the stopper pin (37) is moved to the coil spring (3).
The urging force of 8) penetrates into the through hole (25), the tip of the stopper pin (37) contacts the rear end of the return pin (27), and the rotation of the pin tumbler lock (2) is blocked, and the pin tumbler is rotated. The lock (2) is in a state of being connected to the base (3) (see FIG. 1). In order to release the connection between the pin tumbler lock and the base, the contact position between the rear end of the return pin (27) and the front end of the stopper pin (37) should be adjusted to the rear end face of the fixed body (6) and the rear part (31). It is necessary to move it to the contact position of the sliding contact surface so that it can rotate counterclockwise. In the state shown in FIG. 1, the engaging protrusion (15) of the pin tumbler lock (2) is required.
Cannot slide along the cutout window (34) and therefore also along the guide groove (33).

In addition, mounting flanges (41) and (41) are projected to the left and right on the rear portion (31), and mounting holes (42) and (42) are formed in the flange.

As described above, FIG. 1 shows the state in which the pin tumbler lock (2) is connected to the base (3), the engaging projection (15) engages with the cutout window (34), and the stopper pin ( The tip of 37) contacts the rear end of the return pin (27) by the urging force of the coil spring (38) and penetrates into the through hole (25) of the fixed body (6), and the tip of the return pin (27) rotates. It is in contact with the rear end surface of the part (17), and the axis of the case (5), the axis of the rotating part (17), the axis of the lock shaft (18), the axis of the fixed body (6), and the axis of the base (3). , The axes of the joints (4) coincide with each other and have a common axis. The tip of the code pin (10) contacts the rear surface of the inward flange portion (9) of the front surface of the case (5) through the underpin (24) by the urging force of the coil spring (23).

In this state, the normal key (50) shown in FIG. 6 can be used to unlock or lock. As shown in FIG. 6, the key (50) has a cylindrical shape,
Cam grooves (51A) to (51E) for pressing each code pin from the tip end are formed on the outer peripheral surface in a number corresponding to the number of code pins. The depth of these cam grooves is set according to the length of each code pin (10A) to (10E), and the key (50) is inserted into the key insertion opening (8) of the pin tumbler lock (2). Pins (10A) to (10E)
When pushing in against the urging force of the coil spring, the rear ends of the code pins (10A) to (10E) and the underpin (24E).
The contact positions of the tips of (A) to (24E) coincide with the sliding contact positions of the rear end surface of the rotating portion (17) of the rotating body (7) and the front end surface of the fixed body (6), and It is formed so that it can rotate and can be unlocked or locked.

Further, a protrusion (52) for preventing slippage is provided on the outer periphery of the tip of the key (50), and a protrusion for transmitting a rotational force is provided at a position on the inner periphery opposite to the protrusion (52) for slippage prevention. (5
3) is projected. In the state where the cutout groove (20) of the key engaging portion (19) of the pin tumbler lock (2) is shown in FIG. 2, the key removal preventing projection (52) is provided with the recess (11) of the inward flange portion (9). ), The key (50) is pushed so that the rotational force transmitting projection (53) is aligned with the cutout groove (20) of the key engaging portion of the rotating body (7), and the cam groove (51) is moved as described above. Due to the action, the key can be rotated, and the projection (52) for preventing slippage comes into contact with the back surface of the flange portion (9) to rotate while preventing the key from slipping out, while the projection (53) for transmitting rotational force.
Engage with the notch groove (20) of the key engaging portion of the rotating body (7) to give a rotating force to the rotating body. In this way, by rotating the key (50), for example, the pin tumbler lock attached to the door can be unlocked or locked.

FIG. 7 shows a first exchange key (55) used for separating the pin tumbler lock (2) and the base (3) from the front side. The first key (55) is a normal key (5
0) has the same shape as the cam grooves (56A) to (56E), but no protrusion for preventing slippage is provided.

FIG. 8 shows a second replacement key (57) used for separating the pin tumbler lock (2) and the base (3) from the front side. The second key (57) has a cam groove (58A) having a depth h which is shallower than the depth H of the cam groove (51A) of the normal key (50) and the depth H of the cam groove at one location. The projections for preventing slipping out are not provided.

Next, the assembly of the pin tumbler lock device having the above-described structure and the operation of separating the pin tumbler lock and the base from the front side of the lock device will be described. The assembling operation of the pin tumbler lock device (1) is apparent from the above description, and is further shown with FIG. First, when the engaging protrusion of the pin tumbler lock is engaged with the guide groove and the pin tumbler lock is slid along the guide groove to reach the position of the notch window, the rear end surface of the fixed body (6) is Rear part (31)
Then, the stopper pin (37) is pushed back to the rear as shown in FIG. 9 (a). Then, the pin tumbler lock (2) is rotated in the clockwise direction (the direction of the arrow in FIG. 9B), and the engagement protrusion is slid along the cutout window, and the through hole (25) of the fixed body (6) is formed. 9) and the pin hole (36) of the rear part (31) reach a position where the tip end of the stopper pin (37) enters the through hole (25) by the biasing force of the coil spring (38), and FIG. As shown in (b), the tip of the stopper pin (37) is the return pin (27).
Abut the rear end of the pin tumbler lock (2) and base (3)
And the pin tumbler lock device (1) can be assembled. The pin tumbler lock device (1) assembled in this manner is attached to, for example, a door, and
It can be unlocked or locked using the normal key (50) shown in.

Ordinary keys may be lost or stolen,
When only the pin tumbler lock (2) is removed from the front side while being attached to the door, first, the first replacement key (55) shown in FIG. 7 is inserted into the key insertion opening (8). Then, when the cam grooves (56A) to (56E) of the first key (55) push the code pins (10A) to (10E) against the urging force of the coil spring, the code pins (10A) to (10E) are moved behind. The contact position between the end and the tip of the underpins (24A) to (24E) coincides with the sliding contact position between the rear end surface of the rotating part (17) and the tip surface of the fixed body (6), and as shown in FIG. From the state shown in FIG.
The state becomes (a). This allows the rotating body (7) to rotate with respect to the fixed body (6).

Then, by rotating the first key (55) counterclockwise (in the direction of the arrow in FIG. 10B), the rotating portion (17) of the rotating body is moved by one hole with respect to the fixed body (6). When you rotate to change only one position of the code pin (1
0A) has its rear end abutted against the tip of the return pin (27).
The state becomes 0 (b). Then, in this state, the first key (5
When 5) is pulled out, the state shown in FIG. This allows
The tip portion of the return pin (27) enters the through pin hole (21) of the rotating portion (17) by the urging force of the coil spring (26), the code pin (10A) is pushed up, and the tip thereof is the inward flange portion (9). ) Abutting on the back side. Similarly, the tip of the underpin (24) is also rotated by the urging force of the coil spring (23) except the underpin (24E).
7) Penetrating into the through pin hole (21) of
0) is pushed up and its tip comes into contact with the back surface of the flange portion (9).

In this state, the second replacement key (57) is inserted into the key insertion opening (8), and the cam groove (5) of the second key (57) is inserted.
8A) to (58E) to code pins (10A) to (10
When the cam pin (10A) is pressed against the biasing force of the coil spring against the urging force of the coil spring (E), the code pin (10A) is pressed downward by the cam groove (58A) having a shallow depth h. The rear part of the code pin (10A) is the fixed body (6)
Into the pin insertion hole (22). With this, first,
Return pin (27) that is in contact with the code pin (10A)
Is also pushed down, the rear end of the return pin (27) and the tip of the stopper pin (37) come into contact, and then the abutting position of the rear end of the return pin (27) and the tip of the stopper pin (37) is fixed. Rear end face of body (6) and rear part of base (31)
11A is pushed down to a position corresponding to the sliding contact position with the sliding contact surface of FIG.

In this state, by rotating the second key (57) counterclockwise (in the direction of the arrow in FIG. 11 (b)), the force rotating through the code pin (10A) causes the pin tumbler lock (2). ), The pin tumbler lock (2) can be integrally rotated with respect to the base (3) as shown in FIG. 11 (b), and the stopper pin (37) to the through hole (25) of the fixed body (6) can be transmitted. It is possible to release the engaged state of). Further, the second key (57) is rotated counterclockwise to slide the engagement protrusion (15) of the pin tumbler lock (2) along the cutout window (34), and then the engagement protrusion (15). ) Guide groove (3
It can be slid along 3) to release the connection between the pin tumbler lock (2) and the base (3).

By doing so, the pin tumbler lock can be removed from the base from the front side and can be replaced with another pin tumbler lock while being attached to the door by using the first and second keys for replacement. become.

The connecting structure of the pin tumbler lock and the base in the pin tumbler lock device is not limited to the above-mentioned structure, and various structures can be adopted.
FIG. 12 shows another pin tumbler lock device (60). This device consists of a pin tumbler lock (61) case (62)
Is extended to the rear, and engaging protrusions (63) and (63) are provided on the outer surface of the case (62). Therefore, from the front end edge of the front portion of the base (64) to the inner wall. The guide grooves (65), (65) on which the engaging projections slide are formed. Other structures are the same as those in FIGS. 1 to 5, the keys used are the same as those in FIGS. 6 to 8, and the pin tumbler lock replacement operation is also the same, so a detailed description thereof will be omitted. The engaging protrusion may be provided in a continuous shape on both the fixed body and the case.

FIG. 13 shows another pin tumbler lock device (70). This device is equipped with a pin tumbler lock (7
The case (72) of 1) is extended to the rear, and the case (7)
The engaging grooves (73) and (73) are provided on the outer surface of 2) so that the engaging pins (75) and (75) are projected from the inner wall of the front part of the base (74). It is a thing. Specifically, the engaging grooves (73), (73) are inverted L in which a groove portion parallel to the axis line recessed from the rear end of the case (72) and a groove portion of a predetermined length orthogonal to the groove portion are connected. It has a letter shape. Other structures are the same as those in FIGS. 1 to 5, the keys used are the same as those in FIGS. 6 to 8, and the pin tumbler lock replacement operation is also the same. Since it is clear from the description of No. 4, detailed description will be omitted. Incidentally, as described above, instead of recessing the engaging groove in the case, the rear portion of the fixed body may have the same outer diameter as the case, and the engaging groove may be recessed therein. The engagement groove may be provided continuously on both the fixed body and the case.

The structure of the pin tumbler lock device is not limited to the above, and various changes can be made.
That is, the shape of the front part of the base is not limited to the cylindrical shape,
The length of the pin tumbler lock is not so long as to store the whole of the pin tumbler lock except for the front face thereof. For example, the rear part of the pin tumbler lock may be accommodated. Further, the number of code pins or the like of the pin tumbler lock is not limited to the number shown in the figure, and may be larger or smaller than this. The arrangement position of the return pin and the underpin on the fixed body is not limited to the structure shown in the figure, and the position of the cam groove for pushing back the return pin of the second key is also limited to the positional relationship shown in the figure. Instead, it can be changed appropriately. Further, the positional relationship between the code pin and the return pin for releasing the connection between the pin tumbler lock and the base is not limited to the one position as described above, and the code for releasing the connection between the pin tumbler lock and the base. The rotation direction of the rotating body that brings the pin and the return pin into contact with each other is not limited to the direction described above, and may be the opposite direction. Further, although a coil spring for urging the return pin is not always required, the provision of this coil spring is preferable because the return pin is not inadvertently exposed from the through hole. Further, the pin tumbler lock is not limited to providing a pair of engagement protrusions and engagement grooves with the base so as to face the pin tumbler lock, and may be a pair or more, may not face each other, and in some cases The engagement protrusion and the engagement groove may be single. It is also possible to extend the lock shaft of the rotating body and fit the end portion of the lock shaft to a member of an appropriate lock mechanism, thereby omitting the joint.

This pin tumbler lock device is not only used for pachinko machines and doors of vending machines, but also effective for various products such as desk drawers, lockers, doors of houses, doors of automobiles, etc. Can be utilized.

[0041]

Since the present invention is configured as described in detail above, the pin tumbler lock connected to the base can be separated from the front side and replaced with another pin tumbler lock only by using a key. It is possible to provide a pin tumbler lock and a pin tumbler lock device. As a result, as in the conventional case, the bolts and nuts that attach the pin tumbler lock can be turned to remove it from the machine that equips the lock, and the appropriate lock mechanism and lock that are connected to the lock can be disassembled. You can remove the pin tumbler key from the front side of the machine etc. and replace it with another pin tumbler lock without replacing it with another lock, so the key exchange operation as a countermeasure in case of loss or theft of the key etc. It is easy to do, quick response is possible, and safety can be improved. Moreover, the cost can be reduced because the pin tumbler lock to be replaced is mainly required for the replacement.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a pin tumbler lock device of the present invention.

2 is a plan view of the pin tumbler lock device shown in FIG. 1. FIG.

3 is a cross-sectional view taken along the line AA of the pin tumbler lock device shown in FIG.

4 is an exploded perspective view of the pin tumbler lock device shown in FIG. 1. FIG.

5 is a plan view of the base of the pin tumbler lock device shown in FIG. 1. FIG.

FIG. 6 is a partial perspective view of a key normally used in the pin tumbler lock device shown in FIG.

7 is a partial perspective view of a replacement first key of the pin tumbler lock device shown in FIG. 1. FIG.

8 is a partial perspective view of a second key for replacement of the pin tumbler lock device shown in FIG. 1. FIG.

9 is a partial cross-sectional development view showing the operation of the pin tumbler lock device shown in FIG. 1 during assembly.

FIG. 10 is a partial cross-sectional development view showing the operation of the pin tumbler lock device shown in FIG. 1 when replacing the pin tumbler lock.

11 is a partial cross-sectional development view showing the operation following FIG. 10 when replacing the pin tumbler lock in the pin tumbler lock device shown in FIG. 1. FIG.

FIG. 12 is an exploded perspective view showing another embodiment of the pin tumbler lock device of the present invention.

FIG. 13 is an exploded perspective view showing still another embodiment of the pin tumbler lock device of the present invention.

[Explanation of symbols] 1 pin tumbler lock device 2-pin tumbler lock 3 base 5 cases 6 fixed body 7 rotating body 27 Return pin 37 Stopper pin

Claims (4)

[Claims] 1. A cylindrical case having a key insertion opening formed on a front surface thereof, and a fixed body provided at a rear portion of the case and having a fitting insertion hole penetrating from a front end surface to a rear end surface thereof. A lock shaft extending from the central portion of the rear end surface of the rotating portion is fitted into the fitting hole,
A rotating body that is rotatable about the axis of the lock shaft, with the front end surface of the fixed body slidingly contacting the rear end surface of the rotating section, and a predetermined number of through-pin holes formed on the circumference around the axis of the rotating section. The respective code pins, the underpins inserted by being biased into the pin insertion holes formed in the fixed body so as to communicate with the through-pin holes, and the circle around the axis of the fixed body. A return pin inserted into a through hole formed on a circumference having the same radius as the circumference, and an engaging projection is formed so as to project from the outer surface of the fixed body and / or the case. Pin tumbler tablets. 2. A cylindrical case having a key insertion opening formed on a front surface thereof, and a fixed body provided at a rear portion of the case and having a fitting insertion hole penetrating from a front end surface to a rear end surface thereof. A lock shaft extending from the central portion of the rear end surface of the rotating portion is fitted into the fitting hole,
A rotating body that is rotatable about the axis of the lock shaft, with the front end surface of the fixed body slidingly contacting the rear end surface of the rotating section, and a predetermined number of through-pin holes formed on the circumference around the axis of the rotating section. The respective code pins, the underpins inserted by being biased into the pin insertion holes formed in the fixed body so as to communicate with the through-pin holes, and the circle around the axis of the fixed body. A pin tumbler lock having a return pin inserted into a through hole formed on the circumference having the same radius as the circumference and having an engaging projection protruding from the outer surface of the fixed body and / or the case. And a cylindrical inner wall in which a guide groove for accommodating and accommodating the pin tumbler lock and for guiding the engaging projection is formed parallel to the axis, and having a predetermined length for locking the engaging projection. Front portion in which a notch window is formed orthogonal to the guide groove, and the rear end surface of the fixed body And a rear portion having a pin hole formed therein so as to communicate with the through hole and having an opening centered on the axis line, and a stopper pin urged and inserted into the pin hole. A pin tumbler lock device comprising: a base. 3. A tubular case having a key insertion opening formed in a front surface thereof, and a fixed body provided in a rear portion of the case and having a fitting insertion hole penetrating from a front end surface to a rear end surface thereof. A lock shaft extending from the central portion of the rear end surface of the rotating portion is fitted into the fitting hole,
A rotating body that is rotatable about the axis of the lock shaft, with the front end surface of the fixed body slidingly contacting the rear end surface of the rotating section, and a predetermined number of through-pin holes formed on the circumference around the axis of the rotating section. The respective code pins, the underpins inserted by being biased into the pin insertion holes formed in the fixed body so as to communicate with the through-pin holes, and the circle around the axis of the fixed body. A first groove portion having a return pin inserted into a through hole formed on the circumference having the same radius as the circumference and parallel to the axis from the rear end of the fixed body and / or the case to the first groove portion and orthogonal to the first groove portion; A pin tumbler lock, characterized in that an engagement groove is formed by connecting a second groove portion of a predetermined length. 4. A cylindrical case having a key insertion opening formed in a front surface thereof, and a fixed body provided in a rear portion of the case and having a fitting insertion hole penetrating from a front end surface to a rear end surface thereof. A lock shaft extending from the central portion of the rear end surface of the rotating portion is fitted into the fitting hole,
A rotating body that is rotatable about the axis of the lock shaft, with the front end surface of the fixed body slidingly contacting the rear end surface of the rotating section, and a predetermined number of through-pin holes formed on the circumference around the axis of the rotating section. The respective code pins, the underpins inserted by being biased into the pin insertion holes formed in the fixed body so as to communicate with the through-pin holes, and the circle around the axis of the fixed body. A first groove portion having a return pin inserted into a through hole formed on the circumference having the same radius as the circumference and parallel to the axis from the rear end of the fixed body and / or the case to the first groove portion and orthogonal to the first groove portion; And a pin tumbler lock formed with an engagement groove formed by connecting a second groove portion of a predetermined length to each other, and a projection portion which accommodates the pin tumbler lock and engages with the engagement groove in a radial direction. A front portion having a cylindrical inner wall formed to project and a rear end surface of the fixed body And a rear portion having a pin hole formed therein so as to communicate with the through hole and having an opening centered on the axis line, and a stopper pin urged and inserted into the pin hole. A pin tumbler lock device comprising: a base.