JP3128791U - Picking prevention device - Google Patents

Abstract

An object of the present invention is to provide a picking prevention device that can be attached to either a door knob or a door cylinder and prevents a picking crime.
A locking plate having a substantially circular shape in front view formed with a U-shaped hole that is locked in a gap between a door knob neck or a door cylinder collar and a door, and a bottomed semi-cylindrical shape. A lock hole is opened at the bottom on one end side, a plurality of head plate mounting grooves are formed in the circumferential direction on the lock hole side inner periphery, and a lock plate is attached to the inner periphery of the anti-lock hole side end. A lock base having a plate mounting groove formed in the circumferential direction, a single circular head plate attached to the head plate mounting groove, and a lock means that is externally fitted to the lock base and is detachable from the lock hole. It consists of a bottomed cylindrical lock cover, and the mounting position of the head plate in the head plate mounting groove can be selected.
[Selection] Figure 1

Description

  The present invention relates to a picking prevention device, and more particularly to a picking prevention device that is attached to a door knob or a door cylinder to hide a keyhole and prevent a crime targeting a keyhole such as picking.

  Various measures have been proposed today to prevent picking damage. As one of the measures, as disclosed in Patent Document 1, a cover that covers a keyhole is attached to a door knob with a lock, and picking is performed. Anti-picking device for door knobs, and a cylinder anti-picking device for covering a key hole by attaching a cover to a door cylinder (cylinder lock) mounted on the door independently of the door knob as disclosed in Patent Document 2 Etc. are known.

  Further, in Patent Document 3, as a picking prevention device that can be used for both a door knob 3 with a lock 1 as shown in FIG. 19 and a door cylinder 7 attached at a position different from the door knob 5 as shown in FIG. As shown in FIG. 4, a bottomed cylindrical portion 9 simulating the shape of covering the door knobs 3, 5, a cylinder 13 covering the neck portion 11 of the door knobs 3, 5, and a disk 15 integrally formed with the cylinder 13, The cover 17 is divided into two parts, and the head of the pin 19 that forms the hinge portion provided at the approximate center of the bottomed cylindrical portion 9 is crimped to prevent the picking by pivoting the cover 17 so that the cover 17 can be freely opened and closed. An apparatus 21 is disclosed.

Thus, according to this picking prevention device 21, the cylinder 13 covers the door cylinder 7 with the disk 15 around the door knob 5 in FIG. When a padlock or the like is locked in the holes 25 of the pair of tongue pieces 23 provided on the cover 17, the cover 17 is attached to the door knob 5 with the door cylinder 7 covered with the disk 15.
Even if the disk 15 covering the door cylinder 7 is bent with a bar or the like, and the door cylinder 7 is opened and picked, the bottomed cylindrical portion 9 covering the door knob 5 rotates idly with respect to the door knob 5. Further, the door knob 5 itself cannot be rotated and the door 27 cannot be opened.
JP 2004-218398 A JP 2003-120082 A JP 2002-227469 A

  However, the door knob picking prevention device disclosed in Patent Document 1 can only be used for a door knob with a lock, and similarly, the cylinder lock picking prevention device disclosed in Patent Document 2 is independent of the door knob. For example, when the doorknob is replaced with the specifications shown in FIGS. 19 to 20 by remodeling the building, the door knob picking prevention device used so far is used. There was a problem that it became impossible to purchase a new cylinder lock picking prevention device.

On the other hand, as described above, the picking prevention device 21 shown in FIG. 21 is such that the door cylinder 7 is attached to the door knob 3 with the lock 1 as shown in FIG. 19 and the door knob 5 as shown in FIG. Since they can also be used, the above-described problems do not occur.
However, the door knob has different dimensions and shapes of the ball and the neck according to the specifications. For example, the cover 17 attached to the door knob does not correspond to the door knob size, and the back-and-forth is loosened. However, it has been pointed out that the picking prevention device has to be repurchased because the cylinder 13 does not fit the diameter and size of the neck portion.

  The present invention has been devised in view of such circumstances, and can be mounted on either a door knob or a door cylinder. According to various specifications of the door knob, picking prevention that can reliably prevent picking crime without rattling An object is to provide an apparatus.

  In order to achieve such an object, the picking prevention device according to claim 1 has a substantially circular shape in a front view in which a U-shaped hole is formed to be engaged with a gap between a door knob or a door cylinder collar and a door. The locking plate is formed in a semi-cylindrical shape with a bottom, a lock hole is opened at the bottom on one end side, and a plurality of head plate mounting grooves are formed in the circumferential direction on the inner periphery of the lock hole. A lock base in which one locking plate mounting groove to which the locking plate is attached is formed on the inner periphery of the end in the circumferential direction, one circular head plate to be attached to the head plate mounting groove, and the lock base And a bottomed cylindrical lock cover fitted with a lock means that can be freely engaged and disengaged in the lock hole, and the head plate according to the width dimension of the handle of the door knob or the collar of the door cylinder. Characterized in that the mounting position of the head plate to the biasing grooves and selectable.

  The invention according to claim 2 is the picking prevention device according to claim 1, wherein the locking plate has a plurality of types by changing the size of the U-shaped hole according to the thickness of the neck portion of the doorknob. The invention according to claim 3 is characterized in that, in the picking prevention device according to claim 1 or 2, the door cylinder and the door knob are separately mounted on a rectangular base in front view. The locking plate that locks to the door knob's neck portion is integrally formed with a cover body that covers the door cylinder, and the lock cover has an anti-lock means side end at the end of the lock cover. A concave notch into which the body is inserted is provided.

  Furthermore, the invention according to claim 4 is the picking prevention device according to claim 3, wherein a projecting piece is formed in the notch, and an insertion hole for the projecting piece is provided in the cover body. It is characterized by having.

According to the first aspect of the present invention, it is possible to attach one picking prevention device to the door knob attached to the lock or the door cylinder attached to a position different from that of the door knob without rattling. There is an advantage that it can be surely prevented by the picking prevention device.
According to the second aspect of the present invention, it is possible to deal with door knobs of various specifications with different dimensions and shapes of the ball and neck and door cylinders with different color dimensions, etc. According to this design, the door cylinder and door knob are mounted separately on a rectangular base in front view and can be used for rental housing specifications such as public corporations (Urban Infrastructure Development Corporation) and prefectural housing supply corporations. According to the invention according to claim 4, when the picking prevention device is attached to the doorknob, the projecting piece blocks the line of sight from above, so that there is no useless gap and the user can feel secure. Have advantages.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a cross-sectional view of a picking prevention device according to an embodiment of the present invention that is attached to a door knob. In the figure, 31 is a door knob attached to a door 33, like the door knob 3 of FIG. A lock (not shown) is attached to the door knob 31.
A knob plate (locking plate) 39 of the picking prevention device 37 according to this embodiment is locked to the neck portion 35 of the door knob 31.

As shown in FIGS. 2 and 3, the knob plate 39 has a right and left target shape in which a U-shaped hole 41 that can be locked to the neck portion 35 is provided on a thin metal plate having a circular shape when viewed from the front. ing.
In addition, as described above, since the door knob has different dimensions and shapes of the handle and the neck according to the specifications, the present embodiment is not limited to the knob plate 39 as shown in FIGS. In order to lock the door knob narrower than 35, the knob plate (locking plate) 45 has the same outer diameter and thickness as the knob plate 39, and the width and depth of the U-shaped hole 43 are set short. Two types are available.

As shown in FIG. 5, the opening side end 45a of the U-shaped hole 43 of the knob plate 45 is gradually made thinner toward the tip.
A lock base 47 is attached to the door knob 31 via the knob plate 39.
As shown in FIGS. 1, 6 to 8, the lock base 47 is formed in a bottomed semi-cylindrical shape, and a circular lock hole 51 is formed in a protrusion piece (bottom portion) 49 on the end side of the lock base 47. It is provided on the central axis.

  A plurality of head plate mounting grooves 55 to which a later-described head plate 53 is attached are formed in the circumferential direction at predetermined intervals on the inner periphery of the lock base 47 on the lock hole 51 side. The mounting position of the head plate 53 in the head plate mounting groove 55 can be selected according to the width dimension (thickness) of the collar of the door cylinder described later.

Further, as shown in the drawing, a knob plate mounting groove (locking plate mounting groove) 59 to which the knob plates 39 and 45 are attached is formed in the circumferential direction on the inner periphery of the lock base 47 on the side opposite to the locking hole 51. ing.
As shown in FIGS. 9 and 10, the head plate 53 attached to the head plate mounting groove 55 is made of a metal plate having a circular shape when viewed from the front, and formed on the back side thereof with sponge, neoprene rubber or the like. A holding member 61 is attached. When the head plate 53 is attached to the head plate mounting groove 55 according to the width of the handle 57 of the door knob 31 or the collar of the door cylinder, the holding member 61 comes into contact with the top of the handle 57 or the collar. Yes.

  Since the lock base 47, the knob plates 39, 45, and the head plate 53 are configured in this way, the knob plate 39 is secured by locking the U-shaped hole 41 to the neck portion 35 of the door knob 31 as shown in FIG. After mounting on the neck portion 35, the knob plate 39 is inserted into the knob plate mounting groove 59 of the lock base 47 close to cover the door knob 31, and then the head plate mounting groove according to the width dimension of the handle 57 of the door knob 31. When the head plate 53 is mounted on the head plate 53 and the head plate 53 is inserted into the head plate mounting groove 55, the head base 53 and the knob plate 39 sandwich the handle 57 of the door knob 31. 31, the holding member 61 on the back side of the head plate 53 abuts on the top of the ball 57 and the lock base 47 To prevent rattling.

Further, as shown by a two-dot chain line in FIG. 1, the mounting position of the head plate 53 is changed according to the width dimension of the grip ball 57-1 of the door knob 31-1 having different specifications, or the neck portion is thin although not shown. As the door knob, the lock base 47 can be attached to the door knob 31-1 or the like by using the knob plate 45 of FIG. 4 instead of the knob plate 39.
As shown in FIG. 1, a lock cover 63 is fitted on the lock base 47.

As shown in FIGS. 1, 11 to 13, the lock cover 63 is formed in a bottomed cylindrical shape that can be fitted onto the lock base 47, and is not shown in a concave portion 65 having a circular shape in plan view provided on the top thereof. A dial knob 67 having a dial type locking mechanism (locking means) is mounted. The dial 69 of the lock mechanism is exposed at the top of the dial knob 67.
A dial type lock mechanism is conventionally known as a lock means for an attache case, a travel bag, etc., for example, and has a structure that restricts the movement of the locking claw by the rotation of the dial. As shown in FIG. Then, the pair of locking claws 71 are elastically attached to the peripheral wall of the dial shaft 73 protruding from the bottom of the dial knob 67 with an interval of 180 °.

When the lock cover 63 is externally fitted to the lock base 47 as shown in FIG. 1, the dial shaft 73 is inserted into the lock hole 51, and the locking claw 71 is locked to the lock hole 51. When the dial 67 is operated by turning the knob 67, the movement of the locking claw 71 is restricted and the lock mechanism is locked.
In addition, as shown in FIG. 12, a notch 77 into which a cover body 79 described later in FIG. At the center, a projecting piece 83 is provided along an insertion hole 81 that is provided in the cover body 79 and has a circular arc shape when viewed from the front.

In FIG. 11, reference numeral 85 denotes a dial shaft insertion hole provided at the bottom of the recess 65, and 87 a guide hole of a dial knob 67 provided across the dial shaft insertion hole 85. A fastening pin or the like (not shown) provided on the knob 67 is inserted to prevent the dial knob 67 from being pulled out.
And the picking prevention device 37 according to the present embodiment is compatible not only with the door knobs 31 and 31-1 to which the lock is attached, but also with a specification in which the door cylinder is attached to the door at a position different from the door knob as shown in FIG. As shown in FIG. 14, many types of door cylinders 89 of this type are widely used in recent years, in which a collar 91 is lifted and a gap S is formed between the door 93 and the collar 91.

Therefore, in the present embodiment, in addition to the knob plates 39 and 45 described above, the cylinder portion 95 of the door cylinder 89 in the gap S has the same outer diameter and the same thickness as those shown in FIGS. A cylinder plate (locking plate) 99 having a U-shaped hole 97 that can be locked is further prepared.
After the collar 91 is lifted as shown in FIG. 14, the U-shaped hole 97 is locked to the cylinder part 95 in the gap S formed between the door 93 and the cylinder plate 99 is attached to the cylinder part 95. Then, the cylinder plate 99 is inserted into the knob plate mounting groove 59 of the lock base 47 close to cover the collar 91, and the picking prevention device 37 is attached to the collar 91 of the door cylinder 89 by the same operation as in FIG. It has become.

Furthermore, the picking prevention device 37 of the present embodiment can also cope with a door picking measure widely used in rental housing such as public corporations (urban infrastructure development corporations) and housing supply corporations in prefectures.
That is, today, in these rental houses, the door cylinder 101 and the door knob 103 are separately mounted on a thick base 75 having a rectangular shape when viewed from the front, as shown by a two-dot chain line in FIGS. 17 and 18. The structure attached to is used.

Therefore, in this embodiment, a knob plate (locking plate) 105 shown in FIGS. 17 and 18 is prepared in addition to the knob plates 39 and 45 and the cylinder plate 99 described above.
As shown in the figure, the knob plate 105 has a U-shaped hole 109 that can be locked to the neck portion 107 of the door knob 103, and an arc portion 111 that can be attached to the knob plate attachment groove 59 is formed on the outer periphery thereof. Although it has substantially the same shape as the knob plate 45, a rectangular cover body 79 that covers the door cylinder 101 is integrally formed on the side opposite to the U-shaped hole 109 of the knob plate 105. When the U-shaped hole 109 is locked to the flange portion 107, the cover body 79 covers the door cylinder 101, and the flange portion 113 provided on the peripheral edge portion of the cover body 79 covers the peripheral edge portion of the base 75. Yes.

  An insertion hole 81 for a projecting piece 83 provided in the notch 77 of the lock cover 63 is formed in an arc shape in the cover body 79, and the door cylinder 101 is covered with the cover body 79, and the above-mentioned neck is formed. After locking the U-shaped hole 109 to the portion 107 and attaching the knob plate 105 to the neck portion 107, the knob plate 105 is inserted into the knob plate mounting groove 59 of the lock base 47 that is brought close to cover the door knob 103. The picking prevention device 37 is attached to the door knob 103 by the same operation as in FIG.

At this time, the protruding piece 83 of the lock cover 63 is inserted into the insertion hole 81 of the cover body 79 so that the cover body 79 is fitted into the notch 77 of the lock cover 63 so that the protruding piece 83 blocks the line of sight from above. It has become.
Since the picking prevention device 37 according to the present embodiment is configured as described above, to attach the picking prevention device 37 to the door knob 31 as shown in FIG. 1, first, as described above, first, the neck portion 35 of the door knob 31. The U-shaped hole 41 is engaged with the knob plate 39 to attach the knob plate 39 to the neck portion 35, and the knob plate 39 is inserted into the knob plate mounting groove 59 of the lock base 47 close to cover the door knob 31. Then, when the head plate 53 is inserted into the head plate mounting groove 55 selected according to the width dimension of the handle 57 of the door knob 31, the handle 57 of the door knob 31 is held between the head plate 53 and the knob plate 39, and the lock base 47 is attached to the door knob 31, and the holding member 61 on the back surface side of the head plate 53 is brought into contact with the top of the ball 57 to prevent the lock base 47 from rattling.

  When the lock cover 63 is fitted over the lock base 47, the dial shaft 73 is inserted into the lock hole 51 and the locking claw 71 is locked to the lock hole 51. Thereafter, the dial knob 67 is turned. When the dial 69 is operated, the movement of the locking claw 71 is restricted, the lock mechanism is locked, and the lock of the door knob 31 is blocked by the picking prevention device 37.

Thus, as described above, the holding member 61 of the head plate 53 that holds the handle 57 of the door knob 31 abuts on the top of the handle 57 and prevents the lock base 47 from rattling. The entire backlash is also prevented.
When the dial 69 is operated to the unlocking number, the movement restriction of the locking claw 71 is released, so that the dial knob 67 can be returned to remove the lock cover 63 from the lock base 47.

  Further, as shown by a two-dot chain line in FIG. 1, in order to attach the picking prevention device 37 to the door knob 31-1 having a different width dimension of the gripping ball 57-1, the head plate according to the width dimension of the gripping ball 57-1. The attachment position of 53 may be changed, and the knob plate 45 of FIG. 4 may be used in place of the knob plate 39 in order to attach the picking prevention device 37 to a door knob with a narrow neck (not shown).

  Furthermore, as shown in FIG. 14, in the case where the door cylinder 89 is attached to a position different from the door knob, the collar 91 of the door cylinder 89 is lifted and the cylinder portion 95 in the gap S formed between the door 93 and the cylinder portion 95. After locking the U-shaped hole 97 to attach the cylinder plate 99 to the cylinder portion 95, the cylinder plate 99 is inserted into the knob plate mounting groove 59 of the lock base 47 close to cover the collar 91. The picking prevention device 37 is attached to the collar 91 of the door cylinder 89 by the same operation as that for attaching to the door cylinder 89.

  Further, in rental housing specifications such as public corporations (urban infrastructure development corporations) and prefectural housing supply corporations shown in FIGS. 17 and 18, the door cylinder 101 is covered with a cover body 79, and the neck portion 107 of the door knob 103 is provided. After locking the U-shaped hole 109 to attach the knob plate 105 to the neck portion 107, the knob plate 105 is inserted into the knob plate mounting groove 59 of the lock base 47 close to cover the door knob 103. 1, the picking prevention device 37 is attached to the door knob 103.

  As described above, the picking prevention device 37 according to the present embodiment can be attached to either a door knob attached with a lock or a door cylinder attached to a position different from the door knob. It can be used for door knobs of various specifications with different dimensions and shapes, and door cylinders with different color dimensions, etc., and also for doors of rental housing such as public corporations (Urban Infrastructure Development Corporation) and prefectural housing supply corporations. Compared to the conventional anti-picking device of this kind, one anti-picking device 37 can be attached to the various specifications without rattling, and a single anti-picking device 37 can reliably prevent picking crimes. Has the advantage that can be.

Further, in the rental housing specification of FIG. 17, when the picking prevention device 37 is attached to the door knob 103, the protruding piece 83 blocks the line of sight from above, so there is no useless gap and a sense of security can be given to the user. .
In the above embodiment, a dial type lock mechanism is used as the lock means of the lock cover 63. However, the lock means is not limited to the above embodiment, and other lock means such as a magnet type lock mechanism is used. Of course, it is also good.

It is sectional drawing of the picking prevention apparatus which concerns on one Embodiment of Claims 1 thru | or 4 attached to a doorknob. It is a front view of a knob plate. It is a side view of a knob plate. It is a front view of a knob plate. It is a side view of a knob plate. It is a front view of a lock base. It is sectional drawing of a lock base. It is a bottom view of a lock base. It is a front view of a head plate. It is a top view of a head plate. It is a top view of a lock cover. It is a side view of a lock cover. It is sectional drawing of a lock cover. It is sectional drawing of the picking prevention apparatus attached to the color | collar of a door cylinder. It is a front view of a cylinder plate. It is a side view of a cylinder plate. It is a front view of a knob plate. It is a side view of a knob plate. It is a perspective view of the door knob with which the lock was mounted | worn. It is a perspective view of a door cylinder and a door knob. It is a perspective view of the conventional picking prevention apparatus.

Explanation of symbols

31, 31-1, 103 Door knob 33, 93, 104 Door 35, 107 Constriction part 37 Picking prevention device 39, 45, 105 Knob plate (locking plate)
41, 43, 97, 109 U-shaped hole 47 Lock base 49 Projection piece (bottom)
51 Lock hole 53 Head plate 55 Head plate mounting groove 57, 57-1 Grip ball 59 Knob plate mounting groove (locking plate mounting groove)
61 Holding member 63 Lock cover 67 Dial knob 69 Dial 71 Locking claw 73 Dial shaft 75 Base 77 Notch 79 Cover body 81 Insertion hole 83 Projection piece 89, 101 Door cylinder 91 Collar 95 Cylinder part 99 Cylinder plate (locking plate) )
111 Arc part 113 Flange part

Claims (4)

A locking plate having a substantially circular shape in front view in which a U-shaped hole is formed to be locked in the gap between the door knob neck portion or the door cylinder collar and the door;
It is formed in a bottomed semi-cylindrical shape, a lock hole is opened at the bottom on one end side, a plurality of head plate mounting grooves are formed in the circumferential direction on the lock hole side inner periphery, and an anti-lock hole side end inner periphery is A lock base in which one locking plate mounting groove to which the locking plate is attached is formed in the circumferential direction;
One circular head plate attached to the head plate mounting groove;
A bottomed cylindrical lock cover that is externally fitted to the lock base and fitted with a lock means that can be freely engaged and disengaged in the lock hole;
A picking prevention device characterized in that the mounting position of the head plate in the head plate mounting groove can be selected according to the width dimension of the handle of the door knob or the collar of the door cylinder.   The picking prevention device according to claim 1, wherein a plurality of types of the locking plates are prepared by changing the size of the U-shaped hole according to the thickness of the neck portion of the door knob. For specifications where the door cylinder and door knob are mounted separately on the rectangular base, and attached to the door,
The locking plate that locks to the neck portion of the door knob is integrally formed with a cover body that covers the door cylinder,
The picking prevention device according to claim 1 or 2, wherein a concave notch into which the cover body is fitted is provided at an end of the lock cover on the side opposite to the lock means. The picking prevention device according to claim 3, wherein a projecting piece is formed in the notch, and an insertion hole for the projecting piece is provided in the cover body.

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