JP2020063627A - Tubular pin tumbler lock and information apparatus theft prevention lock equipped with the same - Google Patents

Abstract

To provide a tubular pin tumbler lock with a structure different from a conventional one, having less components and a minimized size.SOLUTION: A tubular pin tumbler lock 1 capable of being locked or unlocked by inserting and rotating a cylindrical key 5 comprises: a disc body 2 having a plurality of pin holes 21 provided on a front end face 2a in a peripheral direction; a code pin 3 arranged in the pin holes 21 and having at least one recessed groove 31 on an outer peripheral face 3a over the peripheral direction; and a lock ring 4 equipped with a protruding tooth 42 protruding inward on an inner peripheral edge side, where normally the protruding tooth 42 contacts the outer peripheral face 3a of the code pin 3 to restrict rotation of the disc body 2, and when the key 5 is inserted, the code pin 3 is pushed in to make the recessed groove 31 come in alignment with a position of the protruding tooth 42 to allow the disc body 2 to rotate.SELECTED DRAWING: Figure 2

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular pin tumbler lock and an information device anti-theft lock including the lock.

  The tubular pin tumbler lock (also called 80,000 lock) is a lock that is locked or unlocked using a cylindrical key.

  The general structure of the tubular pin tumbler lock is shown in the "Prior Art" column of Patent Document 1 below. As shown in FIG. 15, this is provided with a cylindrical code pin 121, a disk body 122 that rotates by a key operation, a base 123, and a key 124. The code pins 121 are held by the disk body 122 and arranged in a ring shape. Further, the code pins 121 are arranged on the base 123 at the same position as the code pin arrangement of the disc body 122 in the locked state, and the coil spring 125 is further arranged at the lower part to urge the code pins 121 upward. Then, by inserting the key 124, the respective code pins 121 are pushed by a predetermined amount, and by eliminating the code pins held over both the disc body 122 and the base 123, the disc body 122 becomes rotatable, The locking piece 126 connected to the disk body 122 is rotated to enable the unlocking operation and the locking operation.

Tubular pin tumbler locks are often used in computers, elevators, coin vending machines for vending machines, etc., and are used as anti-theft locks (also called security locks) for information devices such as laptops and tablets. Sometimes used.
The anti-theft lock is made of, for example, a wire, so that one end of the wire can be attached and fixed to a long-hole-shaped security slot provided in the information device as a connecting portion composed of a tubular pin tumbler lock or the like. , It is possible to bind the other end to a fixed object such as a desk so that it cannot be taken away from the place.

  As a conventional example of an anti-theft lock, in Patent Document 2 below, a connector attached to a rectangular slit formed in a housing or the like of a device for preventing the device such as a personal computer from being stolen, and connected to the connector. A security lock with a cable is disclosed.

JP 2002-266534A Japanese Patent No. 4791893

The conventional tubular pin tumbler lock requires at least two cord pins to be arranged in the longitudinal direction. Therefore, there is a problem that the number of parts is increased and the assembling work is complicated.
Further, since the number of parts is increased, it is difficult to reduce the outer size. Recently, notebook computers and tablet computers have become smaller and thinner, and it is required to make the lock portion of the security lock smaller.

  Therefore, an object of the present invention is to provide a tubular pin tumbler lock having a structure different from that of the conventional one, in which the number of parts can be reduced and downsized, and further, this tubular pin tumbler lock is It is also easy to set the master key.

  A tubular pin tumbler lock according to an aspect of the present invention is a tubular pin tumbler lock that is locked or unlocked by inserting a cylindrical key and rotating the key, and has a plurality of pin holes on the front end face. Direction, a code pin arranged in a pin hole and provided with at least one concave groove extending in the circumferential direction on the outer peripheral surface, and a projecting tooth portion projecting inward on the inner peripheral edge side. A lock ring is provided that restricts rotation of the disk body by hitting the outer peripheral surface of the code pin, the code pin is pushed in when the key is inserted, and the concave groove is aligned with the protruding tooth portion, and the disk body is rotatable. Is characterized by.

  The present invention can be unlocked by aligning the concave groove of the code pin with the position of the protruding tooth portion of the lock ring, and can be locked or unlocked with a structure different from the conventional one. Further, conventionally, at least two cord pins are arranged in the longitudinal direction, but in the present invention, one cord pin may be arranged in the longitudinal direction, and the number of parts can be reduced.

In the tubular pin tumbler lock of the above-described one aspect, the code pin includes at least two recessed grooves, and an individual key for aligning the front recessed groove with the position of the protruding tooth portion and the rear recessed groove with the protruding tooth portion for position. And a master key for matching.
In this way, the master key can also be set by increasing the number of concave grooves. Further, even if the master key is set, the number of parts does not increase, so that it is not necessary to increase the outer size.

  In the tubular pin tumbler lock of the above-mentioned one aspect, a slide portion having a connecting claw capable of being connected to an object is provided, the slide portion includes an elongated recessed portion, and the disc body has the elongated end portion on the rear end surface. It is possible to provide a convex shaft portion that is movably inserted into the concave portion and that slides the slide portion by rotation of the disk body. Alternatively, a slide portion having a connecting claw capable of being connected to an object is provided, and the slide portion slides when the lock button is pushed and is locked by a lock receiving portion provided in the casing to fix the position of the slide portion. The disc body may be provided with a locking portion, and the disc body may be provided with a convex shaft portion on a rear end surface thereof for releasing the locking of the locking portion with the locking receiving portion by the rotation of the disc body.

  By doing so, the connecting claw can be slid together with the slide portion by rotating the key, and can be attached to or detached from the object. Further, if the lock button is provided, it can be attached to the object by pressing the lock button, and can be removed from the object by rotating the key, which simplifies the attachment work.

  In the tubular pin tumbler lock of the above-mentioned form, the external size can be made compact with the external length and height being within 20 mm. Therefore, the tubular pin tumbler lock of the above-mentioned form is suitable for use as an antitheft lock for information equipment.

It is a perspective view of a tubular pin tumbler lock of a first embodiment of the present invention. It is the perspective view which decomposed | disassembled and showed the tubular pin tumbler lock of FIG. It is sectional drawing which showed the state which locked the tubular pin tumbler lock of FIG. It is the perspective view which showed the disc body and code pin which are the components of the tubular pin tumbler lock of FIG. It is the perspective view which showed the key of the tubular pin tumbler lock of FIG. It is the perspective view which showed the state of the disc body, the code pin, and the lock ring before inserting a key in the tubular pin tumbler lock of FIG. It is the perspective view which showed the state of the disc body, the code pin, and the lock ring after inserting and pushing in a key in the tubular pin tumbler lock of FIG. In the tubular pin tumbler lock of FIG. 1, the positional relationship between the key, the code pin and the lock ring when unlocking is shown. (A) is for locking, (b) is for unlocking with an individual key, (c) ) Indicates the time of unlocking by the master key. FIG. 6 is a perspective view showing a modified example of the tubular pin tumbler lock of FIG. 1 and showing a disk body, a code pin and a lock ring which are the components thereof. It is a perspective view of a tubular pin tumbler lock of a second embodiment of the present invention. It is the perspective view which decomposed | disassembled and showed the tubular pin tumbler lock of FIG. It is sectional drawing which showed the state which unlocked the tubular pin tumbler lock of FIG. It is a figure for demonstrating the effect | action of a locking part and a locking receiving part in the tubular pin tumbler lock of FIG. It is sectional drawing which showed the state which locked the tubular pin tumbler lock of FIG. The tubular pin tumbler lock of a prior art example is shown, (a) is a side view, (b) is sectional drawing of a main part, (c) is a key insertion part top view.

  Hereinafter, the tubular pin tumbler lock according to the first embodiment of the present invention will be described. However, the present invention is not limited to this embodiment.

The tubular pin tumbler lock 1 (hereinafter, simply abbreviated as lock 1) of the first embodiment of the present invention includes a disc body 2, a code pin 3, and a lock ring as shown in FIGS. 1 to 3. 4, a key 5, a slide portion 6 having a connecting claw 61, and a casing 7 are mainly provided.
Hereinafter, in describing the lock 1, the insertion direction of the key 5 is the front-rear direction, the insertion port 75 side into which the key 5 is inserted is the front side, the sliding direction of the slide portion 6 is the up-down direction, and the connection claw 61 side is the upper side. To do.

As shown in FIG. 2 or 4, the disc body 2 has a columnar shape and is rotatably arranged in the casing 7.
The disk body 2 is provided with a plurality of pin holes 21 into which the code pins 3 can be inserted. The pin holes 21 are provided at appropriate intervals in the circumferential direction of the disc body 2 and penetrate in the front-rear direction. In this embodiment, eight pin holes 21 are provided, but the number is not limited to this.
The front end surface 2a of the disk body 2 has a cylindrical shape in the vicinity of the center that is projected in two steps, and includes a convex portion 22 on the front end side and a convex portion 23 on the proximal end side.
The tip side convex portion 22 is adapted to be inserted into the inside of the key 5.
The proximal projection 23 is provided with a single projection of engagement projection 24 projecting to the front side along the vertical direction.
The peripheral surface of the base-side convex portion 23 is formed in a concavo-convex shape in which a plurality of arc-shaped concave portions 25 are provided, and each concave portion 25 is connected to each pin hole 21 so that each cord pin 3 can be housed.

  As shown in FIG. 3, the rear end surface 2b is provided with a cylindrical rotary shaft portion 26 near the center thereof so as to serve as the rotary shaft of the disc body 2. Further, a cylindrical convex shaft portion 27 is provided in the vicinity of the outer edge portion so as to move with the rotation of the disc body 2. As shown in FIG. 2, the rear end surface 2b is covered with a circular plate-shaped closing plate 28 so that the opening of the pin hole 21 is closed.

  As shown in FIG. 2 or 4, the code pin 3 has an elongated columnar shape, and is inserted into the pin hole 21 of the disc body 2 together with the coil spring 32 so as to be movable in the front-rear direction. A concave groove 31 is formed in the circumferential surface 3a of the code pin 3 in the circumferential direction. In this embodiment, two recessed grooves 31 are formed in each code pin 3 at appropriate intervals, but the present invention is not limited to this, and at least one recessed groove 31 may be formed.

As shown in FIG. 2, the lock ring 4 has a ring shape having substantially the same diameter as that of the disc body 2, is provided with a plurality of arcuate recessed portions 41 on the inner peripheral edge side at appropriate intervals, and the respective code pins 3 are provided in the respective recessed portions 41. I am trying to fit it. In addition, the protruding portions between the recesses 41 are the toothed portions 42.
On the outer peripheral edge side of the lock ring 4, there is provided a fitting portion 43 projecting upward in a square shape so as to be fitted in the casing 7 for positioning in the casing 7 and preventing the lock ring 4 from rotating. I am doing it.

As shown in FIG. 5, the key 5 has a cylindrical shape, and is arranged so as to protrude from one side of the square plate-shaped head 51. The head 51 can be held by a fingertip or the like, and the key 5 can be rotated.
On the peripheral surface on the tip side of the key 5, pin grooves 52 are formed which are recessed in a circular groove shape at appropriate intervals, and when the key 5 is inserted into the insertion port 75, each code pin 3 is inserted into each pin groove 52. , So that each cord pin 3 can be pushed from the front side to the rear side. Each pin groove 52 is formed to have an appropriate depth so that each code pin 3 can be pressed in an appropriate length. In addition, a key groove 53, which is cut out in a rectangular shape, is formed in the upper portion on the front end side of the key 5, so that the key 5 can be engaged with the engaging projection 24 of the disk body 2.
On the inner side of the key groove 53, there is provided a positioning projection 54 that projects upward and has a rectangular prism shape.

As shown in FIG. 2 or FIG. 3, the slide portion 6 has a deformed square plate shape in which the upper side is inflated in a mountain shape, and the projecting piece 63 protruding from the rear side surface portion 6 a is provided with the connecting claw 61, and the inside of the casing 7 is It can slide up and down.
The projecting piece 63 is provided near the middle of the width of the rear side surface portion 6a, and has a rectangular plate shape along the vertical direction. The tip of the protrusion 63 is provided with a connecting claw 61 protruding upward in a horn shape.
An elongated oval recess 62 extending laterally is formed near the lower side of the front side surface part 6b of the slide part 6 so that the convex shaft part 27 of the disk body 2 can be movably inserted. . The elongated recess 62 may be a hole that is penetrated.

  As shown in FIG. 2, a bearing plate portion 8 in the form of a vertically elongated oval plate is provided between the disk body 2 and the slide portion 6. The bearing plate portion 8 is provided with a circular rotation hole portion 81 so that the rotation shaft portion 26 of the disc body 2 can be inserted therein. Around the rotation hole 81, an arc-shaped hole 82 is provided extending from the upper side to the left side for about a quarter of the circumference so that the convex shaft portion 27 of the disk body 2 can be movably inserted.

As shown in FIGS. 1 to 3, the casing 7 includes a main body portion 71 and an inner lid portion 72, and the main body portion 71 includes a cylindrical cylinder portion 73 and a rear half of the cylinder portion 73 in one step. It has an inverted L-shape when viewed from the side and has a bulging portion 74 that bulges upward, so that each component can be placed inside.
A circular hole insertion opening 75 is provided near the center of the front end surface 7a so that the key 5 can be inserted. The edge of the insertion opening 75 is provided with a positioning groove 75a that is cut upward in a square shape facing upward. When the key 5 is inserted into the casing 7, the positioning protrusion 54 of the key 5 is also inserted. , The direction of the key 5 can be determined.

  The bulging portion 74 has an elongated hole 74a formed in a curved surface from the front portion to the top portion, and a ball joint 91 is arranged inside the bulging portion 74 so that the wire 92 and the like can be tiltably connected. . On the rear side of the top portion and the bottom portion of the main body portion 71, there are provided fastening holes 74b penetrating in the vertical direction so that a fastener 93 for fastening the inner lid portion 72 can be inserted. The fastener 93 is formed with a screw thread in almost half in the length direction, and the fastening hole 74b is formed with a screw groove so that the fastener can be fastened.

As shown in FIG. 2 or FIG. 3, the inner lid portion 72 closes the rear end surface of the casing 7, and is a side surface portion that projects toward the front side around the lid surface portion 72a having a vertically long and elongated disc shape. 72b is provided. The slide portion 6 can be housed inside the side surface portion 72b so as to be vertically movable. Further, the top and bottom of the side surface portion 72b are provided with a fastening hole 72c penetrating in the vertical direction so that the fastener 93 can be inserted.
A vertically elongated slit-shaped insertion hole 76 is provided in the upper portion of the lid surface portion 72a so that the projecting piece 63 of the slide portion 6 can be inserted therethrough.

The lid surface portion 72a is provided with a connecting piece 77 projecting rearward from the opposite edge portion of the insertion hole 76, and the connecting piece 77 is formed in parallel along the vertical direction, and the protruding piece 63 is provided in this gap. The connecting claw 61 is allowed to move in and out between the connecting pieces 77 by vertically sliding the protruding pieces 63.
The projecting piece 62 and the connecting piece 77 form a connecting portion 78 that can be connected to an object. A fixed connecting claw 77a protruding downward is provided on the tip side of the connecting piece 77 so that the connecting piece 77 can be detachably connected to an object. Examples of the object include information devices such as laptop computers and tablets.
Reference numeral 79 in FIG. 2 is a cushioning material, and by providing the cushioning material 79 on the lid surface portion 72a, it is possible to prevent the target object from being damaged when connected to the target object.

Hereinafter, an example of a method of assembling the lock 1 will be described.
For example, first, the closing plate 28 is attached to the rear end surface 2b of the disc body 2 to close the opening of the pin hole 21. Then, after inserting the coil spring 32 into each pin hole 21 of the disk body 2, the code pin 3 is inserted. The lock ring 4 is brought into contact with the front end face 2a of the disk body 2 so that the code pins 3 are housed in the recesses 41 while the fitting portion 43 is directed upward.

  In this state, the disc body 2 is arranged in the casing 7 so that the engaging protrusion 24 faces upward so that the end face of the tip-side protrusion 22 is flush with the front end face 7a of the casing 7. . When attaching the wire 92 to the lock 1, the ball joint 91 is arranged in the casing 7 such that the tip connecting portion is exposed to the outside from the hole 74a.

Next, the bearing plate portion 8 is mounted in the casing 7 such that the rotary shaft portion 26 is inserted into the rotary hole portion 81 and the convex shaft portion 27 is inserted into the arcuate hole portion 82.
The slide portion 6 is arranged in the casing 7 so that the convex shaft portion 27 is inserted into the elongated concave portion 62 with the connecting claw 61 facing upward.

  Finally, the projection 63 of the slide portion 6 is inserted into the insertion hole 76 of the inner lid portion 72 so as to enter the gap of the connecting piece 77, and the rear end surface of the casing 7 is closed. The lock 93 can be assembled by inserting the fasteners 93 into the fastening holes 74b and the fastening holes 72c and fastening them.

The key 5 can be inserted into the lock 1 and rotated by about 1/4 to lock or unlock the lock.
More specifically, the key 5 is inserted into the insertion port 75. At this time, the key 5 can be inserted into the insertion slot 75 by aligning the alignment protrusion 54 with the alignment groove 75a. Further, by setting the key 5 in this direction, the engaging projection 24 fits into the key groove 53, and each code pin 3 can be inserted so as to be housed in each pin groove 52.
As shown in FIG. 6, the disc body 2 is normally set so that it cannot rotate because the peripheral surface 3a of the code pin 3 is caught by the protruding tooth portion 42. When the key 5 is pushed in, the cord pins 3 are pushed rearward by the depth of the pin grooves 52. At this time, as shown in FIG. 7, the groove 31 of each code pin 3 is aligned with the position of the lock ring 4. In this way, by pressing the key 5, the concave groove 31 of each code pin 3 comes to align with the position of the lock ring 4, and the protruding tooth portion 42 comes to align with the position of the concave groove 31. The disk body 2 can be rotated by releasing the catch on the peripheral surface 3a. At this time, since the engaging projection 24 of the disc body 2 is engaged with the key groove 53, it can be rotated by rotating the key 5.

When the disc body 2 is rotated, the convex shaft portion 27 of the rear end surface 2b of the disc body 2 is inserted into the elongated concave portion 62, so that it moves inside the concave portion 62 and the slide portion 6 moves up and down. It will be. When the slide portion 6 moves up and down, the connecting claw 61 also moves up and down, so that the gap of the connecting piece 77 moves up and down, and the connecting claw 61 moves in and out of the connecting piece 77 to be attached to and detached from the object. You can
Since the convex shaft portion 27 is also inserted into the arcuate hole portion 82, the disc body 2 can rotate within this range, that is, is regulated to rotate about 1/4.

Such a lock 1 can be used, for example, as an anti-theft lock for information equipment, and can be used by connecting the connecting portion 78 to the security slot of a notebook computer or a tablet computer.
In this case, the connecting claw 61 is normally housed in the gap of the connecting piece 77 and is not exposed to the outside. In this state, insert the connecting portion 78 into the security slot, insert the key 5 into the insertion opening 75 and push it in, and rotate it about 1/4 turn to the right, the connecting claw 61 moves upward, and from the gap of the connecting piece 77. It comes out and is exposed to the outside. At this time, the connecting portion 78 has an inverted T shape, and the connecting claw 61 and the fixed connecting claw 77a are engaged and connected to the security slot of the information device. If the other end of the wire 92 provided in the lock 1 is fixed to a fixed object such as a desk, the information device can be prevented from being stolen.

  In order to release the connection of the lock 1 to the information device, the key 5 is rotated in the reverse direction, that is, about 1/4 turn to the left, whereby the connection claw 61 moves downward, enters the gap of the connection piece 77, and moves inside. You can immerse yourself. Since the connection claw 61 is unlocked from the information device, it can be removed.

The lock 1 can also be set with a master key. For detailed description, FIG. 8 illustrates a case where four code pins 3 are used.
As shown in FIG. 8 (a), each code pin 3 is provided with one or two recessed grooves 31, and before the key 5 is inserted, the front end faces of the code pins 3 are aligned and the peripheral surface 3a is locked. The disk body 2 cannot be rotated by being hooked on the protruding tooth portion 42 of the ring 4.
As shown in FIG. 8B, the individual key 5a can be unlocked by setting the depth of the pin groove 52 so that the concave groove 31 on the front side of the code pin 3 is aligned with the position of the lock ring 4. You can
As shown in FIG. 8C, the master key 5b can be unlocked by setting the depth of the pin groove 52 so that the concave groove 31 on the rear side of the code pin 3 is aligned with the position of the lock ring 4. You can
In this way, the front concave groove 31 can be used for individual keys, and the rear concave groove 31 can be used for the master key. If the recessed groove 31 on the rear side is formed so that other locks have the same position, any lock can be unlocked with the master key, and a plurality of locks can be unlocked with one master key. be able to.

As described above, the lock 1 does not need to divide the code pin 3 and the number of parts can be reduced, so that the lock 1 can be easily downsized. For example, the outer shape of the entire lock 1 or the casing 7 can be set to a length of 20 mm or less in the front-rear direction, preferably 18 mm or less, and a height of 20 mm or less in the vertical direction, preferably 18 mm or less.
Further, for example, if the number of the code pins 3 is eight and the four concave grooves 31 are formed in each code pin 3, it is possible to set 4 to the 8th power, that is, 65,536 kinds of keys 5.
Further, as described above, the lock 1 can also set a master key by engraving a plurality of concave grooves 31 on the code pin 3.

  In the lock 1 of the first embodiment, the code pin 3 has an elongated cylindrical shape, but the invention is not limited to this. For example, as in a modification shown in FIG. 9, an elongated rectangular plate-shaped cord. It can also be pin 3x. In this case, the disc body 2x is formed with a slit-shaped narrow groove 21x on its peripheral surface so that the code pin 3x can be slidably inserted in the front-rear direction. Instead of the concave groove 31, the code pin 3x is provided with a rectangular notch 31x. The lock ring 4x is provided with a rectangular recess 41x so that the code pin 3x can be housed therein.

  Even in such a configuration, the disc body 2x can be rotated by pushing the code pins 3x with the key 5 and aligning the cutout portions 31x of the code pins 3x with the positions of the protruding teeth portions 42x of the lock ring 4x. , The same effect as that of the tablet 1 can be obtained.

  Hereinafter, the tubular pin tumbler lock of the second embodiment of the present invention will be described. However, the present invention is not limited to this embodiment.

The tubular pin tumbler lock 11 (hereinafter, simply abbreviated as lock 11) of the second embodiment of the present invention is, as shown in FIGS. 10 to 12, a disc body 2, a code pin 3, and a lock ring. 4, a key 5, a slide portion 16 having a connecting claw 161, and a casing 17 are mainly provided.
In the following description of the lock 11, the insertion direction of the key 5 is the front-rear direction, the insertion port 75 side into which the key 5 is inserted is the front side, the sliding direction of the slide portion 16 is the up-down direction, and the connecting claw 161 side is the lower side. And

  Since the disk body 2, the code pin 3, the lock ring 4, and the key 5 may be the same as those used in the first embodiment, they will be described using the same names and reference numerals as above. , Detailed description is omitted.

As shown in FIG. 11 or 12, the sliding portion 16 has a vertically long rectangular plate shape, and a protrusion 163 protruding from the rear side surface portion 16a is provided with a connecting claw 161 so that the inside of the casing 17 can be slid vertically. is there.
The protruding piece 163 is provided so as to protrude from the vicinity of the middle of the width of the rear side surface portion 16a, and has a rectangular plate shape along the vertical direction. The tip end of the projecting piece 163 is provided with a connecting claw 161 projecting downward in an angular shape.
The front side surface portion 16b is provided with an engagement piece 164 projecting from the upper side toward the front side so that it can be engaged with a lock button 94 described later. Further, the front side surface portion 16b is provided with a square plate-shaped locking portion 165 on the surface. The locking portion 165 has a locking claw 166 protruding in a vertically long rectangular shape on the left side. The locking portion 165 is made of an elastic material such as metal. The left half of the locking portion 165 is bent forward to form an inclined surface portion 165a. The inclined surface portion 165a biases the locking claw 166 forward. I am allowed.

Between the disc body 2 and the slide portion 16, as shown in FIG. 11 or 12, there is provided a lock receiving portion 18 in the shape of a vertically elongated oval plate. The lock receiving portion 18 is provided with a shaft recessed portion 181 that is recessed in a circular shape so that the rotary shaft portion 26 of the disk body 2 can be inserted therein. A cutout portion 184 is provided on the upper left side of the shaft recess 181. The cutout portion 184 serves also as a hole portion 182 into which the convex shaft portion 27 of the disk body 2 is inserted and which regulates the movement range of the convex shaft portion 27, and a slit portion 183 which can lock the locking claw 166. . The hole portion 182 is an arc-shaped range in which the convex shaft portion 27 moves around the shaft recessed portion 181, and the slit portion 183 includes a U-shaped notch 183a extending upward from the upper left corner of the cutout portion 184, It is in the form of an elongated strip extending in the vertical direction.
The upper side of the lock receiving portion 18 is cut out in a square shape, and the engagement piece 164 of the slide portion 16 is arranged so as to be movable in the vertical direction in the cutout.

  The casing 17 has substantially the same shape as the casing 7 shown in the first embodiment, but differs in that it has a button hole 17a through which the lock button 94 is inserted. The other parts will be described using the same names and reference numerals as the casing 7, and detailed description will be omitted. The back cover 72 is fixed by turning it upside down from that of the first embodiment.

  A rectangular button hole 17a into which the lock button 94 is inserted is provided at the top of the bulging portion 74, and the lock button 94 can be moved vertically in the button hole 17a.

As shown in FIG. 11 or 12, the lock button 94 is formed in a vertically long rectangular parallelepiped box shape having an opening on the lower side, a coil spring 95 is housed inside, and is biased upward in the casing 17. Is done.
A rectangular hole portion 94b is provided in the rear side surface portion 94a of the lock button 94, and the tip end portion of the engaging piece 164 of the slide portion 16 is fitted therein, and the slide portion 16 is interlocked with the vertical movement of the lock button 94. It is designed to move up and down.

Hereinafter, an example of a method of assembling the lock 11 will be described.
For example, first, the disc body 2, the code pin 3, and the lock ring 4 are arranged in the casing 17 in the same manner as in the first embodiment.

Next, the lock receiving portion 18 is mounted in the casing 17 such that the rotary shaft portion 26 is inserted into the shaft concave portion 181, and the convex shaft portion 27 is inserted into the hole portion 182.
With the coil spring 95 housed in the lock button 94 and the lock button 94 inserted from the button hole 17a, the slide portion 16 is inserted from the rear end side of the casing 17 so that the tip of the engaging piece 164 has the hole portion 94a. To fit into.

  Finally, the projection 163 of the slide portion 16 is inserted into the insertion hole 76 of the inner lid portion 72 so that the inner lid portion 72 enters the gap of the connecting piece 77, and the rear end surface of the casing 17 is closed. The lock 93 can be assembled by inserting the fasteners 93 into the fastening holes 74b and the fastening holes 72c and fastening them.

The lock 11 can be locked by pushing the lock button 94 so that the connecting claw 161 comes out from between the connecting pieces 77. Further, by inserting the key 5 into the insertion port 75 and rotating it about 1/4, the connecting claw 161 can be inserted between the connecting pieces 77 and unlocked.
More specifically, as shown in FIG. 12, when the lock button 94 is pushed downward, the slide portion 16 is interlocked with the lock button 94 by the engagement piece 164 and thus slides downward. . At this time, as shown in FIG. 13A, the tip of the locking claw 166 slides downward while contacting the surface of the locking receiving portion 18. When the locking claw 166 reaches the slit part 183 of the locking receiving part 18, the locking claw 166 is biased to the front side by the inclined surface part 165a as shown in FIG. Enters the slit portion 183. In this state, when the lock button 94 is stopped from being pressed and released, the slide portion 16 is biased upward by the coil spring 95 and therefore tries to return to the upper side, but the locking claw 166 is locked by the slit portion 183. Therefore, the movement to the upper side is restricted, and the state of being positioned to the lower side is maintained as shown in FIG. Then, the connecting claw 161 can be connected to the target object in order to maintain the state of protruding from between the connecting pieces 77.

  When unlocking, the key 5 is inserted into the insertion port 75. As a result, as described in the first embodiment, the concave groove 31 of each code pin 3 comes to align with the position of the lock ring 4, the protruding tooth portion 42 matches the position of the concave groove 31, and Since the catch on the peripheral surface 3a is released, the disc body 2 can be rotated.

  When the disc body 2 is rotated, as shown in FIG. 13C, the convex shaft portion 27 of the rear end surface 2b of the disc body 2 rotates together with the disc body 2 and the tip end thereof contacts the inclined surface portion 165a, and the inclined surface portion 165a. Push 165a to the rear side (direction of arrow A). As a result, the locking claw 166 is disengaged from the slit 183, and the locking with the slit 183 is released. Since the slide portion 16 is biased upward by the coil spring 95, it slides upward. At this time, since the connecting claw 161 also moves to the upper side, the connecting claw 161 enters the gap of the connecting piece 77 and can be released from the object.

Such a lock 11 can be used, for example, as an anti-theft lock for information equipment, and can be used by connecting the connecting portion 78 to the security slot of a notebook computer or a tablet computer.
In this case, the connecting claw 161 is normally kept in the gap of the connecting piece 77 and is not exposed to the outside. In this state, when the connecting portion 78 is inserted into the security slot and the lock button 94 is pushed in, the connecting claw 161 moves downward, comes out from the gap of the connecting piece 77, and is exposed to the outside. At this time, the connecting portion 78 has an inverted T-shape, and the connecting claw 161 and the fixed connecting claw 77a are locked and connected to the security slot of the information device. If the other end of the wire 92 provided in the lock 11 is fixed to a fixed object such as a desk, the information device can be prevented from being stolen.

  In order to release the connection of the lock 11 to the information device, the connection claw 161 is moved upward by rotating the key 5 about 1/4 turn to the left so as to enter the gap of the connection piece 77 and immerse it inside. it can. Therefore, the locking of the connection claw 161 to the information device is released, and the connection claw 161 can be removed.

In this way, the lock 11 does not need to divide the code pin 3 as in the first embodiment, so that the number of parts can be reduced and the size can be easily reduced. For example, the outer shape of the lock 11 or the casing 17 can be set to a length of 20 mm or less in the front-rear direction, preferably 18 mm or less, and a height of 20 mm in the vertical direction or less, preferably 18 mm or less.
Further, the lock 11 can set a master key by engraving a plurality of recessed grooves 31 on the code pin 3 as in the above.

DESCRIPTION OF SYMBOLS 1 ... Tubular pin tumbler lock 2 ... Disk body 2a ... Front end surface 2b ... Rear end surface 21 ... Pin hole 22 ... Tip side convex portion 23 ... Base end side convex portion 24 ... Engaging convex portion 25 ... Recessed portion 26 ... Rotation Shaft portion 27 ... Convex shaft portion 3 ... Code pin 3a ... Outer peripheral surface 31 ... Recessed groove 32 ... Coil spring 4 ... Lock ring 41 ... Recessed portion 42 ... Protruded tooth portion 43 ... Fitting portion 5 ... Key 51 ... Head portion 52 ... Recessed groove 53 ... key groove 54 ... alignment projection 6 ... slide part 6a ... rear side surface 61 ... connecting claw 62 ... elongated recess 63 ... projecting piece 7 ... casing 7a ... front end face 71 ... main body 72 ... inner cover 72a ... lid Surface portion 72b ... Side portion 72c ... Fastening hole 73 ... Cylinder portion 74 ... Swelling portion 74a ... Hole 74b ... Fastening hole 75 ... Inserting port 75a ... Positioning groove portion 76 ... Inserting hole 77 ... Connecting piece 77a ... Fixed connecting claw 78 ... Connecting Part 79 Material 8 ... Bearing plate 81 ... Rotation hole 82 ... Arc hole 91 ... Ball joint 92 ... Wire 93 ... Fastener

Claims (6)

A tubular pin tumbler lock that locks or unlocks by inserting a cylindrical key and rotating it.
A disk body provided with a plurality of pin holes on the front end face in the circumferential direction,
A code pin arranged in the pin hole and provided with at least one groove extending circumferentially on the outer peripheral surface;
The inner peripheral edge side is provided with a protruding tooth portion, and the protruding tooth portion normally contacts the outer peripheral surface of the code pin to restrict rotation of the disk body, and the code pin is pushed in when the key is inserted. A lock ring in which the concave grooves are aligned with the positions of the protruding teeth and which allows the disc body to rotate,
Tubular pin tumbler tablets with.   The code pin includes at least two recessed grooves, an individual key for aligning the recessed groove on the front side with the position of the protruding tooth portion, and a master key for aligning the recessed groove on the rear side with the position of the protruding tooth portion. The tubular pin tumbler tablet according to claim 1, which is provided. A slide part having a connection claw that can be connected to an object is provided,
The slide portion includes an elongated recess,
The disc body is provided on a rear end surface thereof with a convex shaft portion that is movably inserted into the elongated concave portion and that slides the slide portion by rotation of the disc body.
The tubular pin tumbler tablet according to claim 1 or 2. A slide part having a connection claw that can be connected to an object is provided,
The slide portion includes a locking portion that slides when the lock button is pushed and locks a locking receiving portion provided in the casing to fix the position of the sliding portion.
The disc body includes a convex shaft portion on a rear end surface thereof, which unlocks the engagement of the engagement portion with the engagement receiving portion by rotation of the disc body.
The tubular pin tumbler tablet according to claim 1 or 2.   The tubular pin tumbler lock according to any one of claims 1 to 4, wherein the external length and height of the tubular pin tumbler lock are within 20 mm.   A lock for preventing the theft of information equipment, comprising the tubular pin tumbler lock according to claim 1.

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