JP3297862B2 - Pin tumbler lock and pin tumbler lock device - Google Patents

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 Pin tumbler locks in which a cord pin is arranged on a circumference are frequently used because it is difficult to forge a key. And like a normal lock, each pin tumbler lock uses a unique key corresponding to each, and it is generally impossible to unlock or lock with other pin tumbler lock keys It is a target. However, the pin tumbler lock attached to the door of a machine such as a pachinko machine or a vending machine has each key corresponding to each pin tumbler lock, so that the administrator has the key as many as the number of machines,
Every time the lock is unlocked or locked, a necessary 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 manufacturer to reduce the number of keys to be stored or possessed. In such a case, if this common key is lost or stolen, the pin tumbler lock can be removed from all machines with the corresponding pin tumbler lock and replaced with another pin tumbler lock. Required. When replacing the pin tumbler lock, for example, unlock it with a spare key or master key, open the door, turn the bolt or nut attaching the lock from the back side of the door, remove the pin tumbler lock from the door, The 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 troublesome and it is difficult to take a quick response, which may seriously affect sales and crime prevention.

[0003]

SUMMARY OF THE INVENTION The present invention has been made as a result of earnest research in view of the above-described circumstances.
A pin tumbler lock that can be used to change only the lock from the front side while it is mounted on the machine, etc., that is, the lock is removed from the machine etc. by turning the bolt or nut attaching the lock, and the appropriate An object of the present invention is to provide a pin tumbler lock that can be replaced without disassembling a lock mechanism and a lock and 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-mentioned problems, a pin tumbler lock according to the present invention is provided in a cylindrical case having a key insertion hole formed in a front portion and a rear portion in the case. A fixed body in which a fitting hole penetrating from the front end face to the rear end face is bored, and a lock shaft extending from the center of the rear end face of the rotating part is fitted in the fitting hole, and the front end face of the fixed body A rotating body whose rear end face is in sliding contact with the rotating shaft and which is rotatable about the axis of the lock shaft, and cords respectively inserted into a predetermined number of through-pin holes formed on a circumference centered on the axis of the rotating portion. A pin, and an underpin inserted by being urged into the same number of pin insertion holes drilled so as to communicate with the through pin hole in the fixed body,
A return pin inserted into a through hole formed on a circumference having the same radius as the circumference centered on the axis of the fixed body, and formed so as to protrude from an outer surface of the fixed body and / or the case. The engaging projection is formed (claim 1).

This pin tumbler lock device is provided with a cylindrical case having a key insertion opening formed in a front part, and a fitting hole provided in a rear part in the case and penetrating from a front end face to a rear end face. And a lock shaft extending from the center of the rear end face of the rotating part is fitted into the fitting hole, and the front end face of the fixed body and the rear end face of the rotating part are in sliding contact with each other so that the axis of the lock shaft is centered. A rotatable rotating body, a code pin inserted into a predetermined number of through-pin holes formed on a circumference around the axis of the rotating portion, and a fixed body communicating with the through-pin hole. An underpin inserted by being urged into the same number of pin insertion holes, and a return pin inserted into a through hole formed on a circumference having the same radius as the circumference centered on the axis of the fixed body. And a projection projecting 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 guiding the engagement protrusion has a cylindrical inner wall formed in parallel with an axis, and has a predetermined length for locking the engagement protrusion. A notch window has a front portion formed orthogonal to the guide groove, a sliding contact surface with the rear end surface of the fixed body, and a pin hole formed so as to communicate with the opening hole centered on the axis and the through hole. It is provided with a base comprising a rear portion provided and a stopper pin urged into the pin hole and inserted therethrough (claim 2).

In order to assemble the pin tumbler lock apparatus using the pin tumbler lock with such a configuration, first, the engaging projection of the pin tumbler lock is engaged with the guide groove of the base, and the pin tumbler lock is axially moved. , And the rear end surface of the fixed body is brought into contact with the sliding contact surface at the rear part of the base while inserting the lock shaft into the opening hole of the base. Then, the pin tumbler lock is pivoted about the axis, for example, integrally at a predetermined angle in a clockwise direction, and the engaging projection is brought into sliding contact with the rear end surface of the fixed body and the sliding contact surface of the rear portion of the base. By sliding along the notch window and communicating 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 by the urging force on the stopper pin. Will be. Thereby, the pin tumbler lock is connected to the base, and the pin tumbler lock device can be assembled. In this state, the lock device is attached to a machine or the like, and locking and unlocking operations are performed with a predetermined key.

[0007] Remove the pin tumbler lock from the base,
When replacing with another pin tumbler lock, insert a replacement first key into the key insertion slot from the front side of the machine, etc., and press the rear end of the cord pin and the underpin against the urging force on the underpin. The contact position of the front end of the rotating body is made to coincide with the sliding contact position between the rear end face of the rotating part and the front end face of the fixed body, and the first key is rotated counterclockwise to rotate the rotating body counterclockwise at a predetermined angle. Then, the rear end of the predetermined code pin is brought into contact with the front end of the return pin, and the first key for replacement is extracted. Then
Insert the second replacement key into the key insertion slot, press the cord pin backward against the urging force on the stopper pin, 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 making the contact position of the tip of the stopper pin and the tip of the stopper pin coincide with the contact position of the rear end face of the fixed body and the sliding contact face on the rear part of the base, the second key for replacement is further rotated counterclockwise.
The pin tumbler lock is integrally rotated counterclockwise about the axis while sliding the engagement projection of the pin tumbler lock along the cutout window of the base. Thereby, the connection between the pin tumbler lock and the base can be released. Then, at a position where the engaging projection of the pin tumbler lock can slide along the guide groove of the base, the pin tumbler lock can be slid in the axial direction to separate the pin tumbler lock from the base.

A pin tumbler lock according to the present invention includes a cylindrical case having a key insertion opening formed on a front surface thereof, and a fitting hole provided at a rear portion in the case and penetrating from a front end surface to a rear end surface. And a lock shaft extending from the center of the rear end face of the rotating part is inserted into the fitting hole, and the front end face of the fixed body and the rear end face of the rotary part are slid in contact with each other to form a lock shaft. A rotating body rotatable about an axis, code pins respectively inserted into a predetermined number of through-pin holes formed on a circumference about the axis of the rotating portion, and a fixed body communicating with the through-pin holes; The underpins urged and inserted into the same number of pin insertion holes, respectively, and inserted into the through holes formed on the circumference having the same radius as the circumference centered on the axis of the fixed body. From the rear end of the fixed body and / or the case to the outer surface. 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).

The pin tumbler lock device includes a cylindrical case having a key insertion opening formed on a front surface thereof, and a fitting hole provided at a rear portion in the case and penetrating from a front end surface to a rear end surface. A perforated fixed body, and a lock shaft extending from the center of the rear end face of the rotating part are inserted into the fitting hole, and the front end face of the fixed body and the rear end face of the rotary part are in sliding contact with each other, so that the axis of the lock shaft is A rotating body that is rotatable around the center, a code pin inserted into a predetermined number of through-pin holes formed on a circumference around the axis of the rotating portion, and a fixed body that communicates with the through-pin hole. The underpins urged and inserted into the same number of pin insertion holes, and the through-holes formed on the circumference of the same radius as the circumference centered on the axis of the fixed body. And an axis extending from a rear end of the fixed body and / or the case to an outer surface thereof. A pin tumbler lock having an engaging groove formed by connecting a first groove portion and a second groove portion having a predetermined length orthogonal to the first groove portion, and accommodating the pin tumbler lock so as to be engaged with the engaging groove. A front portion having a cylindrical inner wall formed by projecting radially projecting projections; an opening having a sliding contact surface with a rear end surface of the fixed body; A rear portion in which a pin hole is formed so as to communicate with the
A base comprising a stopper pin urged into the pin hole and inserted therethrough (claim 4).

In order to assemble the pin tumbler lock device using the pin tumbler lock according to the above configuration, first, the first groove of the engagement groove of the pin tumbler lock is engaged with the projecting portion of the base, and the pin tumbler lock is engaged. The tumbler lock is slid in the axial direction, and the rear end surface of the fixed body is brought into contact with the sliding contact surface at the rear part of the base while inserting the lock shaft into the opening hole of the base. Then, the pin tumbler lock is pivoted about the axis, for example, integrally and clockwise at a predetermined angle to slide the rear end surface of the fixed body and the sliding contact surface of the rear portion of the base into the second groove portion. When the projecting portion is engaged and slid, and the through hole in which the return pin of the fixed body is inserted and the pin hole of the base communicate with each other, the tip of the stopper pin is forced into the through hole by the urging force on the stopper pin. Will invade. Thereby, the pin tumbler lock is connected to the base, and the pin tumbler lock device can be assembled. In this state, the lock device is attached to a machine or the like, and locking and unlocking operations are performed with a predetermined key.

When the pin tumbler lock is removed from the base and replaced with another pin tumbler lock, a first key for replacement, which will be described later, is inserted into the key insertion slot from the front side of the machine or the like, and the urging force to the under pin is applied. The first key is rotated in a counterclockwise direction such that the contact position between the rear end of the cord pin and the front end of the underpin is matched with the sliding position between the rear end surface of the rotating part and the front end surface of the fixed body. Then, the rotating body is rotated counterclockwise by a predetermined angle, the rear end of the predetermined code pin is brought into contact with the front end of the return pin, and the first key for replacement is removed. Next, the replacement second key is inserted into the key insertion slot, the code pin is pressed rearward against the urging force of the stopper pin, the rear portion of the code pin is caused to enter the through hole of the fixed body, and the return pin is inserted. The contact position between the rear end and the front end of the stopper pin coincides with the contact position between the rear end surface of the fixed body and the sliding contact surface on the rear portion of the base, and the second replacement key is further rotated counterclockwise. Then, the pin tumbler lock is integrally rotated counterclockwise about the axis while the protrusion 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, the pin tumbler lock is slid in the axial direction at a position where the first groove of the pin tumbler lock engages with the protrusion of the base and the pin tumbler lock can slide, thereby separating the pin tumbler lock from the base. Can be.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. Of course, the present invention is not limited by 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 line AA of FIG. 1, FIG.
Is an exploded perspective view.

As the pin tumbler lock device (1), a cylindrical pin tumbler lock (2), a base (3) for accommodating and connecting the pin tumbler lock, and a joint (4) connected to the pin tumbler lock. Is shown. As shown in the figure, the pin tumbler lock (2)
A cylindrical case (5), a fixed body (6) fixed to a rear portion in the case (5), and a rotation supported by the fixed body (6) and rotatable in the case (5). And a body (7).

An inward flange portion (9) from the periphery of the case to the key insertion slot (8) is formed on the front surface of the case (5), and a key projection is formed on a part of the flange portion (9). A recess (11) is formed to allow passage of the part. The rear surface of the flange portion functions as a stopper with which the tip of a cord pin (10) described later contacts.
An annular step is formed protruding from the inner wall of the case (5) near the flange to restrict the movement of the rotating body (7) in the axial direction. As shown in FIG. 3, guide grooves (12), (12) having a predetermined depth from the rear end are formed inside the rear part of the case (5) so as to face in parallel with the axis.

A front part of the fixed body (6) is inserted into a rear part in the case (5), and is fixed to the case (5) integrally by a fixing pin (13). The fixed body (6) is inserted into the case (5) by projecting ridges of a predetermined length protruding from the outer peripheral surface of the front part of the fixed body (6) from the peripheral edge of the front end face in parallel with the axis. (14), (14) is inserted into the guide groove (1) provided in the inner rear portion of the case (5).
2) It is performed by guiding along (12), and is fixed at a predetermined position where the rear part of the fixed body (6) is exposed. Engagement projections (15), (15), which engage with cutout windows of the base, which will be described later, are provided on the outer surface of the rear portion of the fixed body (6) so as to face each other in the radial direction.

The fixed body (6) is provided with a fitting hole (16) extending from the center of the front end face toward the rear end face.
A lock shaft (18) extending rearward from the center of the rear end face of the large-diameter, short-cylindrical rotating section (17) is fitted into 6), and the front end face of the fixed body (6) and the rotating section ( 17) Sliding contact with the rear end surface enables rotation. A key engaging portion (19) protrudes forward from the center of the front end face of the rotating portion (17), and the key engaging portion (19) has a cutout groove (20) for engaging a key. Have been.

The rotating portion (17) of the rotating body (7) has a through-pin hole (21) formed on a circumference of a predetermined radius centered on the axis.
However, for example, the circumference is equally divided into six (that is, at intervals of 60 degrees).
Except for the first position, the second through sixth positions are bored in parallel with the axis, and each of these through-pin holes (2
In 1), code pins (10A) to (10E) are inserted. Therefore, as is clear from the figure, a through-pin hole is not formed at a position near the cutout groove (20) of the key engaging portion (19) of the rotating portion (17) which is the first position. The length of each cord pin is set according to the pin pressing cam groove provided on the key.

The fixed body (6) is provided on the circumference of the same radius as the through-pin hole (21) formed in the rotating part (17) with the axis as the center. At the second to sixth positions except for the first position, bottomed pin insertion holes (22) are drilled in parallel with the axis, and each of these pin insertion holes (22) has a coil spring (23). ) And under pins (24A) to (24E) are inserted. The underpin (24) is urged forward by a coil spring (23), and the code pin (10) projects forward through the underpin (24). The state of (10) comes into contact with the tip. The length of each underpin is usually the same, a leg is provided below the underpin, and a coil spring (23) is mounted around the leg. The length of the leg is such that the key is inserted from the key insertion slot (8), the cord pin is pushed in, and the position of the rear end of the code pin and the tip of the underpin is determined by the rear end face of the rotating part (17) and the fixed body. The position is set so as not to hinder the position of the front end face from the sliding contact position of (6). Note that the pin insertion hole is not limited to having a bottom, and may be a hole penetrating to the rear end face of the fixed body (6). In such a case, for example, the pin insertion hole is formed in the fixed body. A large diameter portion may be provided from the front end surface to the middle portion, and a small diameter portion may be provided from the middle portion to the rear, and a step portion for receiving the coil spring may be provided.

At the first position on the same circumference as the pin insertion hole formed in the fixed body (6), a through hole (25) is formed in parallel with the axis, and the through hole is formed. (2
5) The return pin (27) together with the coil spring (26)
Is 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 a return pin (27) is formed from the through hole (25). It does not fall off. In the small diameter portion of the through hole (25), a return pin (2
The leg of 7) is inserted.

The ends of the under pin and the return pin are formed into a substantially hemispherical shape so that the rear end face of the rotating portion (17) and the front end face of the fixed body (6) slide and rotate easily.

The rear end of the lock pin (18) is a prism, and can be connected to a recess formed at the base end of the joint (4). A longitudinal groove is formed in the prism, and the prism is fitted in the recess by matching a vertical ridge provided in the recess at the base end of the joint (4), and the rotating body (7) and the joint (4) are fitted. ) Can be connected at a predetermined angle.

In the base (3), a front part (30) and a rear part (31) are integrated. The front part (30) is cylindrical and has a cylindrical inner wall for accommodating and accommodating the pin tumbler lock (2), and the pin tumbler lock (2).
The pin tumbler lock (2) is engaged with the base (3) at a predetermined position by guiding the engagement protrusions (15), (15) of the lock member. A pin mechanism for locking the connection between (2) and the base (3) and an opening (32) for inserting the joint (4) are provided.

As shown in FIG. 5, an annular step is provided below the inner wall of the front part (30) and protrudes inward. The step has guide grooves (33) and (33) parallel to the axis. ) Are formed facing each other. Cutout windows (34) and (34) are formed in the front part (30) and extend from the rear end of the guide groove and extend clockwise perpendicular to the guide groove (see FIG. 4). Therefore, the engaging projection (1) of the pin tumbler lock (2)
5) and (15) are slid along the guide grooves (33) and (33) to reach the notched windows (34) and (34), and then rotated clockwise to engage. The joint portion slides along the notch window and engages with the edge of the engagement protrusion and the edge of the notch window. 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 The direction at the time of the operation can be easily determined.

An opening (32) centering on the axis is formed in the rear portion (31), and the joint (4) is inserted through the opening (32). A step is provided on the periphery of the opening hole (32) at a predetermined angle (240 degrees in the figure), and a detent (35) protruding from the outer surface of the front end of the joint (4) is accommodated therein. )
Is set. The rear end of the joint (4) protrudes from the rear part (31), the outer surface is cut out in parallel with the axis, and a female screw hole is provided in the axial direction. It can be positioned and fixed with screws. A pin hole (36) is formed near the opening hole (32) in parallel with the axis.
6) is a small diameter portion from the sliding contact surface at 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 at a rear portion of the pin hole (36). A stopper pin (37) having a small diameter at the front and a large diameter at the rear from the rear end face side of the rear part (31) is inserted into the pin hole (36) together with the coil spring (38). A set screw (39) is screwed into a female screw formed in the portion, and is urged by a coil spring (38) so that the stopper pin (37) projects forward. The pin hole (36)
When the pin tumbler lock (2) is coupled to the base (3), the pin tumbler lock is provided at a position communicating with the through hole (25) of the fixed body (6). As described above, the engaging projections (15) and (15) of the pin tumbler lock (2)
3), slide along (33), cutout windows (34), (3)
When reaching the position 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 notch window, so that the through hole (25) of the fixed body (6) and the pin hole of the rear part (31). (36), the distal end of the stopper pin (37) is connected to the coil spring (3).
The urging force of 8) intrudes into the through hole (25), and the tip of the stopper pin (37) abuts the rear end of the return pin (27) to prevent the pin tumbler lock (2) from rotating. 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 positions of the rear end of the return pin (27) and the front end of the stopper pin (37) are determined by the rear end face of the fixed body (6) and the rear part (31). It is necessary to move to the abutment position of the sliding contact surface so as to be rotatable in a counterclockwise direction. In the state shown in FIG. 1, the engagement projection (15) of the pin tumbler lock (2) is required.
Cannot slide along the cutout window (34), and therefore cannot slide along the guide groove (33).

The rear portion (31) has left and right mounting flanges (41) and (41) projecting therefrom, and mounting holes (42) and (42) are formed in the flanges.

As described above, FIG. 1 shows a state in which the pin tumbler lock (2) is connected to the base (3), the engaging projection (15) engages with the notch window (34), and the stopper pin ( The tip of 37) comes into contact with 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 face 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). , And the joint (4) have the same axis. The distal end of the code pin (10) is in contact with the rear surface of the inward flange (9) on the front surface of the case (5) via the under pin (24) by the urging force of the coil spring (23).

In this state, unlocking or locking can be performed using the ordinary key (50) shown in FIG. As shown in FIG. 6, the key (50) has a cylindrical shape,
Cam grooves (51A) to (51E) for pressing the respective code pins from the tip are formed on the outer peripheral surface in a number corresponding to the number of the code pins. The depth of these cam grooves is set according to the length of each of the cord pins (10A) to (10E), and the key (50) is inserted into the key insertion slot (8) of the pin tumbler lock (2). Pin (10A)-(10E)
Is pressed against the urging force of the coil spring, the rear ends of the cord pins (10A) to (10E) and the under pins (24)
The contact positions of the tips of A) to (24E) coincide with the sliding contact positions of the rear end face of the rotating part (17) of the rotating body (7) and the front end face of the fixed body (6), and It is formed so that it can be rotated and can be unlocked or locked.

A projection (52) for preventing the key (50) from coming off is provided on the outer periphery of the tip of the key (50). A projection for transmitting the rotational force is provided on the inner periphery of the key (50) at a position opposite to the projection (52). (5
3) is protruded. When the notched groove (20) of the key engaging portion (19) of the pin tumbler lock (2) is in the state shown in FIG. 2, the key removal prevention projection (52) is engaged with the concave portion (11) of the inward flange portion (9). ), The key (50) is pushed in so that the rotational force transmitting projection (53) matches the notch groove (20) of the key engaging portion of the rotating body (7). The rotation of the key is enabled by the action, and the protrusion (52) for preventing the key from coming off comes into contact with the back surface of the flange portion (9) to rotate while preventing the key from being removed, while the protrusion (53) for transmitting the rotational force.
Engages with the notched groove (20) of the key engaging portion of the rotating body (7) to apply a rotating force to the rotating body. Thus, by rotating the key (50), for example, the pin tumbler lock mounted on the door can be unlocked or locked.

FIG. 7 shows a first replacement key (55) used to separate the pin tumbler lock (2) and the base (3) from the front side. The first key (55) is a normal key (5
It has cam grooves (56A) to (56E) having the same shape as that of (0), but is not provided with a protrusion for preventing detachment.

FIG. 8 shows a second replacement key (57) used to separate 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 smaller than the depth H of the cam groove (51A) of the normal key (50) at one place compared to the depth H of the cam groove (51A). In this case, no projection is provided.

Next, the assembling 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-mentioned contents, and is further shown in FIG. First, the engaging projection 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. Rear part (31)
9A, and the stopper pin (37) is pushed back as shown in FIG. 9A. Then, the pin tumbler lock (2) is rotated clockwise (in the direction of the arrow in FIG. 9B), and the engaging projection is slid along the cutout window, so that the through-hole (25) of the fixed body (6) is formed. ) And the pin hole (36) of the rear part (31) reach the position where they communicate with each other, the tip of the stopper pin (37) enters the through hole (25) by the urging force of the coil spring (38), and FIG. As shown in (b), the tip of the stopper pin (37) is returned to the return pin (27).
Pin tumbler lock (2) abuts the rear end of the base (3)
To assemble the pin tumbler lock device (1). The pin tumbler lock device (1) assembled as described above is attached to, for example, a door or the like, and FIG.
Can be unlocked or locked using the normal key (50) shown in FIG.

If a normal key is lost or stolen,
When removing only the pin tumbler lock (2) from the front side while attached to the door, first, the first replacement key (55) shown in FIG. 7 is inserted into the key insertion slot (8). When the cam grooves (56A) to (56E) of the first key (55) push the cord pins (10A) to (10E) against the urging force of the coil spring, the cam pins (10A) to (10E) The contact position between the end and the tip of the underpins (24A) to (24E) coincides with the sliding contact between the rear end face of the rotating part (17) and the front end face of the fixed body (6), and FIG. From the state shown in FIG.
The state is shown in FIG. This allows the rotating body (7) to rotate with respect to the fixed body (6).

Next, by rotating the first key (55) in the counterclockwise direction (the direction of the arrow in FIG. 10B), the rotating part (17) of the rotating body is moved by one hole relative to the fixed body (6). When rotated to change only one position, the code pin (1
0A) FIG. 1 in which the rear end is in contact with the front end of the return pin (27)
The state becomes 0 (b). Then, in this state, the first key (5
If 5) is omitted, the state shown in FIG. This allows
The tip of the return pin (27) enters the through pin hole (21) of the rotating part (17) by the urging force of the coil spring (26), pushes up the code pin (10A), and the tip thereof faces the inward flange (9). Abut on the back side. Similarly, the tip of the underpin (24) is also rotated by the urging force of the coil spring (23) except for the underpin (24E).
7) penetrates into the through pin hole (21), and the code pin (1)
0) is pushed up and its tip comes into contact with the back surface of the flange portion (9).

In this state, the replacement second key (57) is inserted into the key slot (8), and the cam groove (5) of the second key (57) is inserted.
8A) to (58E) are replaced with the cord pins (10A) to (10E).
When the pin is pressed against the biasing force of the coil spring in contact with E), the cam pin (58A) having a shallow depth h pushes down the code pin (10A) below the first key, The rear part of the cord pin (10A) is the fixed body (6)
Into the pin insertion hole (22). Thus, first,
Return pin (27) in contact with cord pin (10A)
Is also pushed down so that the rear end of the return pin (27) abuts on the tip of the stopper pin (37), and then the abutment position of the rear end of the return pin (27) and the tip of the stopper pin (37) is fixed. Rear end of body (6) and rear part of base (31)
11A is pushed down to a position that coincides with the sliding contact position with the sliding contact surface of FIG.

In this state, by rotating the second key (57) in the counterclockwise direction (the direction of the arrow in FIG. 11B), the force rotating via the cord pin (10A) is applied to the pin tumbler lock (2). 11), 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 rotated. ) Can be released. Further, the second key (57) is turned counterclockwise to slide the engaging projection (15) of the pin tumbler lock (2) along the cutout window (34). ) In the guide groove (3
The pin tumbler lock (2) can be disengaged from the base (3) by sliding along (3).

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

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

FIG. 13 shows still another pin tumbler lock device (70). This device uses a pin tumbler lock (7
The case (72) of 1) is extended to the rear, and the case (7) is extended.
The engaging grooves (73) and (73) are recessed in the outer surface of (2), so that the engaging pins (75) and (75) protrude from the inner side wall of the front part of the base (74). It is a thing. Specifically, the engagement grooves (73) and (73) are formed by a reverse L in which a groove formed in the rear end of the case (72) and parallel to an axis and a groove having a predetermined length orthogonal to the groove are continuous. It is shaped like a letter. Other structures are the same as those in FIGS. 1 to 5, the keys to be used are the same as those in FIGS. 6 to 8, the replacement operation of the pin tumbler lock is also the same, and the description and claims in FIGS. 4 is evident from the description of No. 4, and a detailed description thereof will be omitted. In addition, instead of forming the engaging groove in the case as described above, the rear portion of the fixed body may have the same outer diameter as the case, and the engaging groove may be formed here. 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 portion of the base is not limited to a cylindrical shape,
In addition, the length of the pin tumbler lock is not long enough to accommodate the whole except for the front part thereof. For example, the rear part of the pin tumbler lock may be accommodated. Further, the number of cord pins and the like of the pin tumbler lock is not limited to the number shown in the drawing, and may be larger or smaller than this. The arrangement positions of the return pin and the underpin on the fixed body are 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 as appropriate. Also, the positional relationship between the code pin for releasing the connection between the pin tumbler lock and the base and the return pin is not limited to one position as described above, and the code for releasing the connection between the pin tumbler lock and the base is also provided. The rotation direction of the rotating body for bringing the pin and the return pin into contact with each other is not limited to the above-described direction, but may be a reverse direction. Further, although a coil spring for biasing the return pin is not always required, the provision of the coil spring is preferable because the return pin is not inadvertently exposed from the through hole. In addition, the pin tumbler lock is not limited to providing a pair of engagement protrusions and engagement grooves with the base in opposition to the pin tumbler lock, but may be more than one pair, and may not be opposed to each other. The number of engagement protrusions and engagement grooves may be one. It is also possible to omit the joint by extending the lock shaft of the rotating body and fitting the end of the lock shaft to a member of an appropriate lock mechanism.

This pin tumbler lock device can be effectively used not only for pachinko machines and vending machine doors, but also for various fields such as desk drawers, lockers, house doors, and car doors. Can be used.

[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 only by using a key and replaced with another pin tumbler lock. A pin tumbler lock and a pin tumbler locking device that can be provided can be provided. As a result, as in the prior art, the bolts and nuts for attaching the pin tumbler lock are removed from the machine or the like on which the lock is mounted, and the lock and the appropriate lock mechanism connected to the lock are disassembled. The key tumbler key can be removed from the front side of the machine etc. and replaced with another pin tumbler lock lock without replacing it with another lock, so the key exchange operation as a countermeasure when the key is lost or stolen Is easy, quick response is possible, and safety can be improved. In addition, the cost required for replacement can be reduced mainly because the pin tumbler lock to be replaced is sufficient.

[Brief description of the drawings]

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

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

FIG. 3 is a sectional view of the pin tumbler lock device shown in FIG.

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

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

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

FIG. 7 is a partial perspective view of a first key for replacement 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 sectional development view showing an operation at the time of assembling the pin tumbler lock device shown in FIG. 1;

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

FIG. 11 is a partial cross-sectional development view showing an operation subsequent to FIG. 10 when exchanging the pin tumbler lock in the pin tumbler lock device shown in FIG. 1;

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 Case 6 Fixed Body 7 Rotating Body 27 Return Pin 37 Stopper Pin

Claims (4)

(57) [Claims] 1. A cylindrical case having a key insertion opening formed in a front surface portion, a fixed body provided in a rear portion in the case, and having a fitting insertion hole penetrating from a front end surface to a rear end surface. A lock shaft extending from the center of the rear end face of the rotating part is fitted into the fitting hole,
A rotating body in which the front end face of the fixed body and the rear end face of the rotating part are in sliding contact with each other and rotatable about the axis of the lock shaft, and a predetermined number of through-pin holes formed on a circumference around the axis of the rotating part. And the underpins respectively urged and inserted into the same number of pin insertion holes formed in the fixed body so as to communicate with the through-pin holes, and the circle centered on the axis of the fixed body. A return pin inserted into a through hole formed on the circumference of the same radius as the circumference, wherein an engagement projection is formed to protrude from the outer surface of the fixed body and / or the case. And 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 in the case and having a fitting hole penetrating from a front end surface to a rear end surface. A lock shaft extending from the center of the rear end face of the rotating part is fitted into the fitting hole,
A rotating body in which the front end face of the fixed body and the rear end face of the rotating part are in sliding contact with each other and rotatable about the axis of the lock shaft, and a predetermined number of through-pin holes formed on a circumference around the axis of the rotating part. And the underpins respectively urged and inserted into the same number of pin insertion holes formed in the fixed body so as to communicate with the through-pin holes, and the circle centered on the axis of the fixed body. A pin tumbler lock having a return pin inserted into a through hole formed on a circumference having the same radius as the circumference, and having an engaging projection formed on the outer surface of the fixed body and / or the case. A guide groove for accommodating and accommodating the pin tumbler lock and guiding the engagement protrusion has a cylindrical inner wall formed in parallel with an axis, and a predetermined length for locking the engagement protrusion; A front part in which a notch window is formed perpendicular to the guide groove, and a rear end face of the fixed body An opening hole having a sliding contact surface with the shaft hole, a rear portion provided with a pin hole so as to communicate with the through hole, and a stopper pin urged and inserted into the pin hole. A pin tumbler lock device comprising: a base; 3. A cylindrical case having a key insertion opening formed in a front surface thereof, and a fixed body provided in a rear part of the case and having a fitting hole penetrating from a front end surface to a rear end surface. A lock shaft extending from the center of the rear end face of the rotating part is fitted into the fitting hole,
A rotating body in which the front end face of the fixed body and the rear end face of the rotating part are in sliding contact with each other and rotatable about the axis of the lock shaft, and a predetermined number of through-pin holes formed on a circumference around the axis of the rotating part. And the underpins respectively urged and inserted into the same number of pin insertion holes formed in the fixed body so as to communicate with the through-pin holes, and the circle centered on the axis of the fixed body. A return pin inserted into a through hole formed on the circumference of the same radius as the circumference, and a first groove parallel to the axis on the outer surface from the rear end of the fixed body and / or the case, and a first groove perpendicular to the first groove; A pin tumbler lock characterized in that an engaging groove formed by connecting a second groove portion having a predetermined length is formed. 4. A cylindrical case having a key insertion opening formed in a front part, a fixed body provided in a rear part in the case and having a fitting hole penetrating from a front end face to a rear end face. A lock shaft extending from the center of the rear end face of the rotating part is fitted into the fitting hole,
A rotating body in which the front end face of the fixed body and the rear end face of the rotating part are in sliding contact with each other and rotatable about the axis of the lock shaft, and a predetermined number of through-pin holes formed on a circumference around the axis of the rotating part. And the underpins respectively urged and inserted into the same number of pin insertion holes formed in the fixed body so as to communicate with the through-pin holes, and the circle centered on the axis of the fixed body. A return pin inserted into a through hole formed on the circumference of the same radius as the circumference, and a first groove parallel to the axis on the outer surface from the rear end of the fixed body and / or the case, and a first groove perpendicular to the first groove; A pin tumbler lock having an engagement groove formed by connecting a second groove portion having a predetermined length, and a projecting portion that receives the pin tumbler lock in a matched manner and engages with the engagement groove in a radial direction. A front part having a cylindrical inner wall formed to protrude, and a rear end face of the fixed body An opening hole having a sliding contact surface with the shaft hole, a rear portion provided with a pin hole so as to communicate with the through hole, and a stopper pin urged and inserted into the pin hole. A pin tumbler lock device comprising: a base;