JP3072276B2 - Lock protection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock protector for preventing an illegal unlocking from outside or an infant from unlocking from inside and going out.

[0002]

2. Description of the Related Art Toddlers and others disassemble a door to which a grip ball lock is attached, and a sash to which a draw lock is attached to which a turning fastener such as a crescent or a turning handle is turned to engage and disengage with a receiving device. If the user learns the locking operation, the guardian may go outside without noticing, and a traffic accident or the like may occur.
In addition, there is a concern that an unauthorized intruder may open the lock from outside by using a duplicate key and intrude.

Therefore, an unlocking prevention device that covers an indoor operation portion of a lock and regulates the unlocking operation has conventionally been proposed in Japanese Utility Model Laid-Open Publication No. 61-11 / 1986.
No. 5,664, and Japanese Utility Model Laid-Open No. 3-61073. However, since these devices can remove the unlocking device relatively easily from indoors, there is a concern that an unauthorized intruder breaks the glass and inserts his hand, removes the unlocking device and breaks in. .

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lock with a high security effect that restricts the unlocking operation of an indoor operation unit and cannot be removed unless a padlock is opened.

[0005]

The lock protector of the present invention comprises:
One side open, lock that is the indoor side operation part of the grip ball lock
Hold the cylinder that covers the knob with the button and the neck of the knob at one end.
A holding plate having a pair of flexible leg pieces to hold, and
In order to keep the knob covered, the cylinder and the holding plate
A padlock that is detachably joined, the other end surface of the cylindrical body suppresses the protrusion of the lock button , and the padlock is attached to one end of the peripheral wall of the cylindrical body.
A pair of slits that respectively penetrate the distal end of the flexible leg and the other end of the holding plate are formed facing each other, and fins are extended along one slit that penetrates the distal end of the flexible leg, A fixing hole through which the foot of the padlock is inserted is formed in the tip of the fin and the flexible leg.

After the flexible leg of the holding plate is opened and the neck of the knob is sandwiched, the tubular body is put on the knob, the flexible leg is closed and inserted into one slit, and the other end of the holding plate is inserted. The part is inserted into the other slit, and the fin of the cylindrical body and the flexible leg of the holding plate are joined with a padlock, and a lock protector is attached. The flexible leg piece sandwiches the neck portion of the knob, prevents the holding plate and the cylinder locked by the holding plate from coming off, the cylinder covers the knob, restricts the turning operation of the knob, and The other end suppresses the protrusion of the lock button to prevent unlocking by the duplicate key.

One end surface is open, and an indoor operation part of a grip ball lock is provided.
The cylinder that covers the knob with thumb turn, and the knob at one end
A holding plate having a pair of flexible leg pieces for holding the neck of,
In order to keep the cylinder covered with the knob,
A padlock for detachably joining the holding plate, fixing the auxiliary plate to the base of the knob, forming a detent projection on the surface of the auxiliary plate, and engaging with the thumb turn on the other inner surface of the cylindrical body. And a notch at one end of the peripheral wall of the cylindrical body to be engaged with the rotation preventing projection of the auxiliary plate, and the other end of the flexible leg and the holding plate are formed. A pair of slits each having an end inserted therethrough are formed to face each other, fins are extended along one of the slits penetrating the distal end of the flexible leg, and a padlock is inserted into the distal end of the fin and the flexible leg. A fixing hole for inserting a foot may be formed.

[0008] The projection of the auxiliary plate and the notch of the cylinder are engaged,
Regulate the rotation of the cylinder and the thumb turn engaged with the cylinder,
Unlocking is disabled. Further, a plurality of fixing holes can be formed in the tip of the fin and the flexible leg in the axial direction of the cylindrical body. With this configuration, the mounting position of the locking portion and the cylindrical body is adjusted according to the depth dimension of the knob, and the lock button and the thumb turn, which are the operation portions of the final tightening bolt, are securely held in the locked state.

[0009] Rotational tightening which is an indoor operation part of the draw lock.
A box that covers the bracket and regulates its rotation, and rotates the box
Detachable padlock that keeps the fastening bracket covered
An opening is formed on one surface of the box that intersects the inner wall on the side where the turning fastener is mounted, and a cutout that engages with the rotation center axis of the turning fastener is formed on the inner wall. It is formed continuously and the fixing piece is turned around the tip of the inner wall on the side of the notch.
It may be provided movably, a flange may be protruded from the outer surface of the edge facing the opening of the outer wall facing the inner wall, and a fixing hole through which a padlock foot is inserted may be formed in the flange and the fixing piece.

[0010] The turning fastener is housed inside the box through the opening, and the rotation center axis of the turning fastener is engaged with the notch of the box, and then the fixing piece is turned to overlap the flange. After that, the flange and the fixing piece are joined with a padlock, and a lock protector is attached. The notch of the box is engaged with the center axis of rotation of the rotation fastener, thereby restricting movement of the box in the indoor direction and the direction along the center axis of rotation, and the fixing piece closes a part of the opening. Thus, the movement in the direction along the cutout of the box is restricted.

[0011]

1 to 4 show a lock protector 1 comprising a grip ball tablet. The lock protector 1 is shown in FIGS.
As shown in the figure, a cylinder 10 that covers the indoor knob 2 that is an indoor operation unit of the grip ball lock and regulates the unlocking operation, and a knob
2 and a holding plate 11 locked to the neck 20 of the cylinder 2, and the cylinder 10 and the holding plate 11
And a support plate 13 fixed to the surface of a mounting plate 22 provided at the base of the knob 2.
And At the center of the knob 2 on the indoor side, an operating portion of a lock button 21 that can be freely retracted or a thumb bolt 23 that can be freely rotated (see FIG. 5) is provided.

The cylindrical body 10 is made of a metal such as stainless steel or a synthetic resin, and is formed in a cylindrical shape having an open end.
As shown in FIG. 3, a pair of slits 101 and 102 are formed at one end of the peripheral wall 100 so as to face each other. The lengths of these slits 101 and 102 are substantially equal to the width of the intermediate portion of the holding plate 11. Further, fins 103 and 104 are projected on the outer surface of the peripheral wall 100 of the cylindrical body 10 along both sides of the one slit 101, and the fins 103 and 104 are opposed to each other as shown in FIGS. To a plurality (three in the example shown) of fixing holes 105
Are bored side by side in the axial direction of the cylindrical body 10.

Further, a notch 107 is formed at one end of the peripheral wall 100 on a diameter orthogonal to a diameter connecting the slits 101 and 102. In addition, a pair of protrusions 106 are formed in parallel at the center of the inner surface of the closed other end surface of the cylindrical body 10 to abut on the tip of the lock button 21 in the immersed state to suppress the protrusion. A concave groove 108 is formed between the projecting portions 106 to engage with the locked thumb turn 23 to restrict the rotation thereof.

The holding plate 11 is made of the same material as the cylindrical body 10 and is formed in a strip shape longer than the diameter of the cylindrical body 10. Further, as shown in FIG.
A portion up to about ／ is divided into two in the thickness direction to form a pair of flexible leg pieces 110 and 111 for holding the neck 20 of the knob 2.

Further, as shown in FIGS. 1 and 2, the distal ends of the flexible leg pieces 110 and 111 are respectively extended to one side in an L-shape to form a wide mounting piece 112, and this mounting piece 112 is formed. Further, a plurality of fixing holes 115 corresponding to the fixing holes 105 of the cylindrical body 10 are formed. Also, the holding plate 11
Projecting pieces 116 that protrude from the outer surface of the peripheral wall 100 of the cylindrical body 10 are respectively provided on both side surfaces near the other end of the cylindrical body 10.

The padlock 12 may be of a type that can be opened and closed with another key, or of a type that can be opened and closed by adjusting a number. As shown in FIG. It has a foot 120 that is inserted through a fixing hole 115 of the holding plate 11 so as to be able to be freely inserted and removed. Since the auxiliary plate 13 is permanently fixed to the surface of the mounting plate 23 of the knob 2, it is desirable that the auxiliary plate 13 has the same color tone as the knob 2, and a hole for inserting the neck 20 of the knob 2 is formed at the center thereof. It is divided into two so that it can be fitted from both sides of the neck 20. Then, the auxiliary plate 13 is superposed on the surface of the mounting plate 23, and is fixed by using a screw for fixing the mounting plate 23 to the door or by an adhesive. Further, a pair of detent protrusions 130 that are respectively engaged with the cutouts 107 of the cylindrical body 10 are formed facing each other on both sides of the surface of the auxiliary plate 13.

The lock protector 1 is mounted on a grip with a lock button as follows. The auxiliary plate 13 is fixed on the surface of the mounting plate 23 of the knob 2 in advance.
Is pressed to lock the ball lock. In this state, the flexible leg pieces 110 and 111 of the holding plate 11 are opened, and after the neck portion 20 of the knob 2 is sandwiched, the tubular body 10 is put on the knob 2 from one end where the opening is opened. Then, the rotation preventing protrusion 130 of the auxiliary plate 13 is engaged with the notch 107 of the cylindrical body 10.

Further, the flexible leg pieces 110 and 111 are closed and overlapped, one end of which is inserted into one slit 102 of the cylindrical body 10 and the other end of the holding plate 11 is inserted through the other slit 101. . At this time, the projecting piece 116 of the holding plate 11 abuts on the outer surface of the peripheral wall 100 of the cylindrical body 10 to position the holding plate 11 and the cylindrical body 10 in the radial direction. Alignment between 105 and fixing hole 115 of holding plate 11 is facilitated.

Next, the cylinder 10 is pushed in deeply, and the holding plate 11 and the slits 102 and 101 are relatively slid, so that the protrusion 106 of the cylinder 10 is brought into contact with the tip of the lock button 21. Furthermore, the foot 120 of the padlock 12 is inserted into the fixing hole 105 of the cylindrical body 10 and the fixing hole 115 of the sandwiching plate 11 that are overlapped with the cylindrical body 10 pushed in to lock it.

When the lock protector 1 is attached to a grip ball lock with a lock button, the knob 2 is concealed.
The lock button 21 can be protruded from the indoor
Not only can not be rotated, but also when trying to open the final tightening bolt from outside using a duplicate key, the lock button 21 which is the operation part of the final tightening bolt is suppressed, so that the lock can be unlocked. Can not. Further, even if the user breaks the glass and inserts his hand into the indoor side, the padlock 12 cannot be opened, so that it is impossible to remove the cylinder 10 to expose the knob 2 and the lock button 21.

In the case of a protective device for a grip ball lock provided with a thumb turn 23 as an operation part of the final tightening bolt, FIG.
As shown in FIG. 7, after the thumb turn 23 is rotated and locked, the holding plate 11 and the cylindrical body 10 are attached in the same manner as in the protection of the grip ball lock with the lock button, and the concave groove 108 on the inner surface of the other end of the cylindrical body 10 is attached. And the thumb turn 23 are engaged. Then, the rotation preventing projection 130 of the auxiliary plate 13 is engaged with the notch of the cylindrical body 10, and the rotation of the cylindrical body 10 is regulated.
The rotation of the thumb turn 23 engaged with the concave groove 108 is restricted. Therefore, even if an attempt is made to open the final tightening bolt with a duplicate key, the thumb turn 23, which is the operation section of the final tightening bolt, cannot be turned, and therefore, unlocking is impossible. When the cylindrical body 10 and the holding plate 11 are connected by a long chain,
There is no worry about losing any of them, and there is no problem with mounting.

FIGS. 6 and 7 show that a turning clamp 4 such as a crescent and a turning handle attached to a frame of a shoji is hooked on a receiving device (not shown) attached to a window frame or another frame of a shoji. Fig. 3 shows a lock protector 3 consisting of a drawing lock to be locked. The lock protector 3 is made of a metal such as stainless steel or a synthetic resin, and as shown in FIG. 6, covers the turning fastener 4 which is an indoor operation unit of the lock, and performs unlocking operation by turning the lock. A box 30 to be regulated; a fixing piece 302 attached to the inner side wall 31 of the box 30 on the mounting side of the turning clamp 4 to lock the box 30 to the turning clamp 4 so that it cannot be removed.
And a detachable padlock 32 for holding the rotating clamp 4 in a covered state.

As shown in FIG. 7, the box 30 has an open side surface on the outdoor side, and an opening 300 is formed on the lower surface crossing the inner wall 31 near the outdoor side. Also, the inner wall 3
A notch 301 that engages with the rotation center shaft 40 of the rotary fastener 4 is formed continuously with the opening 300 from the lower end of 1 to an intermediate portion. Further, a fixing piece 302 longer than the width of the box 30 is provided at the lower end of the inner wall 31 on the outdoor side of the notch 301.
A locking portion is rotatably provided, and a fixing hole 303 is formed at the tip of the fixing piece 302.

A flange 305 projects from the lower end of the outer surface of the outer wall 304 facing the inner wall 300 of the box 30 so as to face the opening 300.
A fixing hole 306 corresponding to the second fixing hole 303 is formed. On the upper surface of the box 30, a long hole 307 extending in the indoor and outdoor directions is provided.
Even when the height of the turning fastener 4 is slightly larger than the height of the box 30, the tip thereof can be protruded to the outside through the elongated hole 307 to be housed inside the box 30. ing. As shown in FIG. 6, the padlock 32 has a fixing hole 306 of the flange 305 and a fixing hole 30 of the fixing piece 302.
3 has a leg 320 that is inserted so as to be able to be inserted and removed freely.

The lock protector 3 is attached to the draw lock as follows. The rotation fastener 4 is rotated to be locked to the receiving member, and is locked. Next, with the fixing piece 302 standing upright to release the opening 300, the box 30 is placed over the indoor side of the turning clamp 4, and the rotation center shaft 40 of the turning clamp 4 is engaged with the notch 301. Combine. In this case, the fixing piece 302 is located on the outdoor side with respect to the rotation center axis 40.

Next, the fixing piece 302 is rotated upward, and its tip is overlapped with the flange 305, and the padlock 3 is inserted into the fixing hole 306 of the flange 305 and the fixing hole 303 of the fixing piece 302.
The second foot 320 is inserted, and the padlock is locked. Then
The outer side of the opening 300 of the box 30 is closed by the fixing piece 300, and the box 30 is held in a state of covering the rotation tightening fitting 4.

Note that the size of the box 30 and the width and length of the notch 301 can be appropriately changed according to the type and size of the rotary tightening fitting 4. It can also be formed symmetrically so as to cover the rotary tightening fitting 4 attached to the right end face when viewed from the inside of the shoji. Further, the lock protector 3 can be attached to a pulling lock in which the turning tightening metal is turned in the horizontal direction like a lock for an up / down window.

[0028]

According to the first and second aspects of the present invention, the knob is exposed by removing the cylinder unless the padlock is opened.
The intruder cannot break the glass
The lock button or thumb turn
Therefore, it is impossible to unlock the grip ball lock, and it is possible to prevent an infant or the like from going outdoors. Further, even if an attempt is made to open the final tightening bolt of the grip by using the duplicate key, the lock button or the thumb turn does not move, so that illegal unlocking is prevented.

According to the third aspect of the present invention, the mounting position of the cylinder and the holding plate can be adjusted according to the depth of the knob, so that the lock button or the thumb turn can be securely held in the locked state. Thus, unlocking with a duplicate key can be prevented. According to the configuration of the fourth aspect , the indoor side
Unable to unlock operation because the rotation tightening bracket, which is the operation unit, is covered.
In prayer, Ri can der possible to prevent the illegal unlocking of Attraction lock, or unlock illegal intruder by dividing the glass, infant
Does not open the lock and go out.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of a lock protector according to a first embodiment of the present invention when attached to a grip ball lock with a lock button.

FIG. 2 is an exploded side view of the above.

FIG. 3 is a rear view of a cylindrical body.

FIG. 4 is a front view of a holding plate.

FIG. 5 is a plan cross-sectional view of the lock protector according to the first embodiment of the present invention when attached to a grip ball lock with a thumb turn.

FIG. 6 is a cross-sectional side view of a lock protector according to a second embodiment of the present invention when the lock protector is attached.

FIG. 7 is a perspective view of a box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Protector of lock 10 Cylindrical body 100 Peripheral wall 101, 102 Slit 103, 104 Fin 105 Fixing hole 106 Projection 107 Notch 108 Depressed groove 11 Clamping plate 110, 111 Flexible leg piece 112 Mounting piece 115 Fixing hole 116 Overhanging piece 12 Padlock 120 foot 13 auxiliary plate 130 detent protrusion 2 knob (indoor side operation unit) 20 neck 21 lock button 22 mounting plate 23 thumb turn 3 lock protector 30 box 300 opening 301 cutout 302 fixing piece 303 fixing hole 304 outer wall 305 Flange 306 Fixing hole 307 Long hole 31 Inner wall 32 Padlock 320 Feet 4 Rotation tightening bracket (indoor operation unit) 40 Rotation center axis

Claims (4)

(57) [Claims] 1. An indoor side operation of a grip ball lock having an open end.
The cylinder that covers the knob with the lock button
A pinch having a pair of flexible leg pieces for pinching the neck of the knob
Holding plate and holding the tubular body in a covered state with respect to the knob
Padlock for detachably connecting the cylinder and the holding plate
With the door, suppressing the protrusion of the other end face lock button of the cylindrical body, one end of the peripheral wall of the cylindrical body, said flexible leg of the tip
And a pair of slits for inserting the other end of the holding plate, respectively, facing each other, and projecting a fin along one slit for inserting the distal end of the flexible leg piece. A lock protector, characterized in that a fixing hole through which the foot of a padlock is inserted is formed at the tip of the piece. 2. An indoor operation of a grip ball lock having an open end.
Cylinder with a knob with thumb turn
Clamp having a pair of flexible legs for clamping the neck of the knob
A plate and the tubular body are kept covered with the knob.
For this purpose, a padlock for detachably connecting the cylinder and the holding plate is provided.
A concave groove provided, along with securing the auxiliary plate to the base of the knob, the detent on the surface of the auxiliary plate to form a protrusion, the other end inner surface of the cylinder, for regulating the rotation engages the thumb And a notch at one end of the peripheral wall of the cylindrical body for engaging with the rotation preventing projection of the auxiliary plate, and the flexible leg is formed.
A pair of slits are formed facing each other to insert the tip of the piece and the other end of the holding plate , and fins are protruded along one of the slits to insert the tip of the flexible leg piece. A lock protector, characterized in that a fixing hole through which a foot of a padlock is inserted is formed at the tip of a flexible leg piece. 3. The lock protector according to claim 1, wherein a plurality of fixing holes are formed in a tip portion of the fin and the flexible leg in an axial direction of the cylindrical body. 4. A rotary lock, which is an indoor operation part of the draw lock.
A box covering the metal fittings and restricting the rotation thereof;
Detachable to hold the cover against the turning clamp
A padlock is provided, and an opening is formed on one surface that intersects the inner wall of the box body on the side where the rotation fastener is attached, and the inner wall has
A notch that engages with the rotation center axis of the turning fastener is formed continuously with the opening, and a fixing piece is rotatably provided at a tip of the inner wall on a side of the notch, and a notch is provided on the inner wall. A lock protector, wherein a flange is formed on an outer surface of an edge of the opposing outer wall facing the opening, and a fixing hole through which a foot of a padlock is inserted is formed in the flange and the fixing piece.