JP6433549B2 - Unlocking prevention tool - Google Patents

Description

  The present invention relates to an unlocking prevention tool that prevents a door lock from being opened.

  As a conventional unlocking prevention tool, for example, there is one described in Patent Document 1. The unlocking prevention tool described in this document includes a box fixed to a door provided with a thumb turn, and a rod-shaped stopper protruding upward from the box. The box is fixed at a predetermined position of the door so that the tip of the stopper comes into contact with the thumb turn to be rotated from the front in the rotational direction.

JP 2005-23770 A

  According to the above-described unlocking prevention tool, since the rotation of the thumb turn is blocked by the stopper, it is possible to prevent the lock from being illegally opened. However, in this unlocking prevention tool, in order to fix the box in a predetermined position, it is necessary to fix the box to the door plate via a double-sided tape or the like. Therefore, there is a problem that it is troublesome to attach and detach the unlocking prevention tool to the door.

  This invention is made | formed in view of the said subject, and it aims at providing the unlocking prevention tool with easy attachment or detachment with respect to a door.

  An unlocking prevention tool according to the present invention is an unlocking prevention tool that is attached to a door provided with a thumb turn having a knob portion that becomes vertical when locked, and includes an extendable rod-like member, at one end of the rod-like member. Is provided with a first abutting surface that abuts on the knob portion of the thumb turn, and a second abutment that abuts on a vertical surface parallel to the side surface of the door at the other end of the rod-shaped member. The bar-shaped member is configured such that the first contact surface is in contact with the knob portion of the thumb turn and the second contact surface is in contact with the vertical surface. It is characterized by being fixed to.

  In this unlocking tool, a first contact surface that contacts the thumb-turn knob is provided at one end, and a second contact surface that contacts a vertical surface parallel to the side surface of the door is provided at the other end. A provided bar-shaped member is provided. Since the first and second contact surfaces of the rod-shaped member are in contact with the thumb-turn knob and the vertical surface, respectively, the rotation of the thumb-turn is prevented, so that the lock can be prevented from opening. In addition, this rod-shaped member is extendable. For this reason, by adjusting the length of the rod-like member, the rod-like member can be fixed in a state of being stretched between the thumb turn knob and the vertical surface. Therefore, the rod-shaped member can be fixed at a predetermined position without fixing the rod-shaped member to the door plate. For this reason, attachment / detachment of the unlocking prevention tool with respect to a door can be performed easily.

  ADVANTAGE OF THE INVENTION According to this invention, the unlocking prevention tool with easy attachment or detachment with respect to a door is implement | achieved.

It is a front view which shows 1st Embodiment of the unlocking prevention tool by this invention. 2 is a perspective view showing one end portion 10a of a rod-shaped member 10. FIG. 4 is a perspective view showing the other end portion 10b of the rod-shaped member 10. FIG. It is a front view which shows the door 90 to which the unlocking prevention tool 1 is attached. FIG. 6 is a front view showing a state where the unlocking prevention tool 1 is attached to the door 90. It is a front view which expands and shows the unlocking prevention tool 1 attached to the door 90. FIG. 2 is an enlarged plan view showing an unlocking prevention tool 1 attached to a door 90. FIG. It is a front view which shows 2nd Embodiment of the lock prevention tool by this invention. It is a front view which shows 3rd Embodiment of the unlocking prevention tool by this invention. 4 is a perspective view showing an auxiliary member 40. FIG. It is a perspective view which shows the auxiliary member 40 by which the several plate-shaped part 42 was folded. FIG. 6 is a front view showing a state where an auxiliary member 40 is inserted into a gap 96. It is a front view which shows the state in which the unlocking prevention tool 3 was attached to the door 90. FIG. It is a front view which expands and shows the unlocking prevention tool 3 attached to the door 90. FIG. 4 is an enlarged plan view showing an unlocking prevention tool 3 attached to a door 90. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same reference numerals are assigned to the same elements, and duplicate descriptions are omitted.
(First embodiment)

  FIG. 1 is a front view showing a first embodiment of an unlocking prevention device according to the present invention. The unlocking prevention tool 1 is an unlocking prevention tool that is attached to a door provided with a thumb turn having a knob portion that is vertical when locked. The unlocking prevention tool 1 includes a rod-shaped member 10.

  The rod-shaped member 10 is extendable. The rod-shaped member 10 can be fixed to an arbitrary length within a predetermined expansion / contraction range. The expansion / contraction range preferably includes a range of 30 mm to 90 mm.

  In the present embodiment, the rod-shaped member 10 has an outer cylinder 22 and an inner cylinder 24. The inner cylinder 24 is inserted into the outer cylinder 22. The length of the rod-shaped member 10 can be adjusted by changing the insertion depth of the inner cylinder 24 with respect to the outer cylinder 22. Fixing the length of the rod-shaped member 10 (fixing the outer cylinder 22 and the inner cylinder 24) is performed by an appropriate means. As such means, for example, it is conceivable to provide a female screw on the inner surface of the outer cylinder 22 and a male screw that is screwed to the female screw on the outer surface of the inner cylinder 24. As a material of the outer cylinder 22 and the inner cylinder 24, for example, plastic, stainless steel or the like can be used.

  A contact surface 12 (first contact surface) is provided at one end portion 10a of the rod-shaped member 10 (equal to the end portion of the outer tube 22 opposite to the side where the inner tube 24 is inserted). . The abutting surface 12 is a surface that abuts on the thumb turn knob. A contact surface 14 (second contact surface) is provided at the other end portion 10b of the rod-shaped member 10 (equal to the end portion of the inner tube 24 opposite to the side inserted into the outer tube 22). Yes. The contact surface 14 is a surface that contacts a vertical surface parallel to the side surface of the door. Examples of the vertical surface include a side surface of a door frame (door frame), a wall surface around the door, and the like. The rod-shaped member 10 is fixed to the door in a state where the contact surface 12 contacts the thumb turn knob and the contact surface 14 contacts the vertical surface.

  The contact surface 12 is preferably softer than a portion (intermediate portion 10c) other than the one end portion 10a and the other end portion 10b of the rod-shaped member 10. Such a configuration can be realized, for example, by configuring the contact surface 12 with an elastic material such as rubber. Similarly, the contact surface 14 is preferably softer than the intermediate portion 10 c of the rod-shaped member 10. Such a configuration can be realized, for example, by configuring the contact surface 14 with an elastic material such as rubber.

  2 and 3 are perspective views showing the one end portion 10a and the other end portion 10b of the rod-shaped member 10, respectively. As can be seen from FIG. 2, the contact surface 12 has a planar shape. Specifically, the contact surface 12 has a rectangular shape. Similarly, as can be seen from FIG. 3, the contact surface 14 is also flat. Specifically, the contact surface 14 has a rectangular shape. The intermediate portion 10c of the rod-shaped member 10 has a cylindrical shape.

  The circumferential length of the contact surface 12 is larger than the circumferential length of the cross section in the intermediate portion 10 c of the rod-shaped member 10. The circumference of the contact surface 12 is preferably at least twice the circumference of the transverse section. Similarly, the circumferential length of the contact surface 14 is larger than the circumferential length of the cross section in the intermediate portion 10 c of the rod-shaped member 10. The circumferential length of the contact surface 14 is preferably at least twice the circumferential length of the transverse section.

  Then, an example of the usage method of the unlocking prevention tool 1 is demonstrated, referring FIGS. 4-7. FIG. 4 shows a door 90 to which the unlocking prevention tool 1 is attached. The figure shows the surface of the inside of the door 90 (inside the room). A thumb turn 92 is provided on the door 90. The thumb turn 92 has a knob 93 that is vertical when locked. At the time of unlocking, the knob 93 becomes horizontal. In FIG. 4, the knob | pick part 93 at the time of locking is shown. A door frame 94 is installed around the door 90. The door frame 94 extends inside the door 90.

  In order to attach the unlocking prevention tool 1, as shown in FIG. 5, the rod-shaped member 10 may be fixed horizontally between the knob 93 and the side surface (vertical surface 95) of the door frame 94. At this time, as shown in FIGS. 6 and 7, the contact surface 12 and the contact surface 14 are brought into contact with the knob 93 and the vertical surface 95, respectively. Specifically, the contact surface 14 contacts the portion of the vertical surface 95 that faces the knob 93. 6 and 7 are an enlarged front view and a plan view, respectively, of the unlocking prevention tool 1 attached to the door 90.

  The rod-shaped member 10 can be fixed as follows, for example. First, the length of the rod-shaped member 10 is adjusted so as to be smaller than the distance between the knob portion 93 and the vertical surface 95. Thereafter, the rod-shaped member 10 is placed in a horizontal direction between the knob 93 and the vertical surface 95. In this state, the rod-shaped member 10 is extended so that the contact surface 12 and the contact surface 14 are in strong contact with the knob 93 and the vertical surface 95, respectively. Thereby, the rod-shaped member 10 can be fixed in a state of being stretched between the knob 93 and the vertical surface 95. Thus, in the door 90 to which the unlocking prevention tool 1 is attached, the rotation of the knob portion 93 is restricted by the rod-shaped member 10. For this reason, the rotation of the thumb turn 92 is prevented and the lock cannot be opened.

  The effect of the unlocking prevention tool 1 will be described. The unlocking preventing tool 1 is a rod-shaped member in which a contact surface 12 that contacts the knob 93 of the thumb turn 92 is provided at one end 10a and a contact surface 14 that contacts the vertical surface 95 is provided at the other end 10b. 10 is provided. Since the abutment surface 12 and the abutment surface 14 of the rod-shaped member 10 abut on the knob 93 and the vertical surface 95, respectively, the thumb turn 92 is prevented from rotating, so that the lock can be prevented from opening. Moreover, the rod-shaped member 10 is extendable. For this reason, by adjusting the length of the rod-shaped member 10, the rod-shaped member 10 can be fixed while being stretched between the knob portion 93 and the vertical surface 95. Therefore, the bar-shaped member 10 can be fixed at a predetermined position without fixing the bar-shaped member 10 to the door plate. Actually, in this embodiment, the rod-shaped member 10 is fixed to the door 90 in a state of being in contact with only the thumb turn 92 and the vertical surface 95, and is not fixed to the door plate (see FIG. 7). For this reason, attachment / detachment of the unlocking prevention tool 1 with respect to the door 90 can be performed easily. Therefore, the unlocking preventing tool 1 that can be easily attached to and detached from the door 90 is realized.

  Thus, since the unlocking prevention tool 1 can be easily attached or detached with respect to a door, there is no fear of soiling a door. Therefore, the unlocking prevention tool 1 can be used easily in a rental house or on the go. For example, even if you are worried about the security of the door at your travel destination, you can avoid the situation where the door is unlocked from the outside of the door by attaching the unlocking prevention device 1 to the inside of the door. Can do.

  The rod-shaped member 10 can be fixed to an arbitrary length within a predetermined expansion / contraction range. Since stepless adjustment is possible in this manner, the length of the rod-shaped member 10 can be easily adjusted to the distance between the knob 93 of the thumb turn 92 and the vertical surface 95.

  By the way, in many doors, the distance between the thumb turn knob and the vertical surface is in the range of 30 mm to 90 mm. Therefore, when the expansion / contraction range of the rod-shaped member 10 includes a range of 30 mm or more and 90 mm or less, in many doors, the length of the rod-shaped member 10 can be adjusted to the distance between the thumb turn knob and the vertical surface.

  When the contact surface 12 is softer than the intermediate portion 10 c of the rod-shaped member 10, the close contact degree of the contact surface 12 with the knob 93 of the thumb turn 92 can be increased. This is advantageous for firmly fixing the rod-shaped member 10 to the door 90.

  When the contact surface 14 is softer than the intermediate portion 10 c of the rod-shaped member 10, the degree of contact of the contact surface 14 with the vertical surface 95 can be increased. This is advantageous for firmly fixing the rod-shaped member 10 to the door 90.

  The circumferential length of the contact surface 12 is larger than the circumferential length of the cross section in the intermediate portion 10 c of the rod-shaped member 10. Thus, by increasing the circumferential length of the contact surface 12, the contact area between the contact surface 12 and the knob 93 can be increased. This is advantageous for firmly fixing the rod-shaped member 10 to the door 90.

The circumferential length of the contact surface 14 is larger than the circumferential length of the cross section in the intermediate portion 10 c of the rod-shaped member 10. Thus, by increasing the circumferential length of the contact surface 14, the contact area between the contact surface 14 and the vertical surface 95 can be increased. This is advantageous for firmly fixing the rod-shaped member 10 to the door 90.
(Second Embodiment)

  FIG. 8 is a front view showing a second embodiment of the unlocking prevention device according to the present invention. The unlocking prevention tool 2 is an unlocking prevention tool that is attached to a door provided with a thumb turn having a knob portion that is vertical when locked. The unlocking prevention tool 2 includes a rod-shaped member 10 and an alarm unit 30. The configuration of the rod-shaped member 10 is as described in the first embodiment. In the present embodiment, the alarm unit 30 is provided inside the rod-shaped member 10.

  The alarm unit 30 issues an alarm when the rod-shaped member 10 contracts. The alarm unit 30 includes a fixed contact 32, a movable contact 34, and an electric circuit (not shown) for generating an alarm. The alarm may be by auditory means such as sound, or by visual means such as light emission. This electric circuit can be switched between an on state in which an alarm is issued and an off state in which an alarm is not issued. When the movable contact 34 contacts the fixed contact 32, the electric circuit is switched from the off state to the on state. Switch to

  The fixed contact 32 and the movable contact 34 are made of a conductor. The fixed contact 32 is provided inside the outer cylinder 22. On the other hand, the movable contact 34 is connected to the end of the inner cylinder 24 (the end on the side inserted into the outer cylinder 22). The distance between the fixed contact 32 and the movable contact 34 is adjusted so that the rod-shaped member 10 is fixed to the door 90 (see FIG. 5). When the rod-shaped member 10 contracts, the movable contact 34 approaches the fixed contact 32 together with the inner cylinder 24.

  The alarm unit 30 preferably continues to issue an alarm until a predetermined time elapses after the rod-shaped member 10 contracts. In that case, a timer may be provided in the alarm unit 30 so that the user can set the time using the timer. Moreover, it is preferable that the alarm unit 30 continues to issue an alarm until a predetermined time elapses even if the rod-shaped member 10 is returned to the original length after the rod-shaped member 10 is contracted.

  The effect of the unlocking prevention tool 2 will be described. In the unlocking prevention tool 2, the alarm part 30 which issues an alarm when the rod-shaped member 10 contracts is provided. Thereby, when the thumb turn is rotated with such a strong force that the rod-shaped member 10 contracts, it can be notified that the lock is about to be opened illegally.

  When the alarm unit 30 continues to issue an alarm until a predetermined time has elapsed after the rod-shaped member 10 contracts, the effect of the alarm can be enhanced. That is, it becomes easy for the user to recognize that the lock is about to be opened, and a great psychological sway can be given to those who are trying to open the lock illegally.

Even if the alarm unit 30 returns the rod-shaped member 10 to its original length after the rod-shaped member 10 is contracted, the alarm effect can be further enhanced if the alarm is continued until a predetermined time elapses. Other effects of the unlocking prevention tool 2 are the same as those of the unlocking prevention tool 1.
(Third embodiment)

  FIG. 9 is a front view showing a third embodiment of the unlocking prevention tool according to the present invention. The unlocking prevention tool 3 is an unlocking prevention tool that is attached to a door provided with a thumb turn having a knob portion that is vertical when locked. The unlocking prevention tool 3 includes a rod-shaped member 10 and an auxiliary member 40. The configuration of the rod-shaped member 10 is as described in the first embodiment.

  FIG. 10 is a perspective view showing the auxiliary member 40. The auxiliary member 40 includes a plurality of (specifically, ten) plate-like portions 42. The plurality of plate-like portions 42 have a congruent shape. Each plate-like portion 42 has a rectangular shape. The plurality of plate-like portions 42 are continuously arranged in a horizontal row. As shown in FIG. 11, these plate-like portions 42 are continuously provided so as to be folded like a folding screen. In the figure, the plurality of plate-like portions 42 overlap each other. In FIG. 9, the auxiliary member 40 in a state where the plate-like portion 42 is folded is shown. The vertical length d1 of each plate-like part 42 is, for example, about 40 to 80 mm. The horizontal length d2 of each plate-like portion 42 is, for example, about 50 to 100 mm. Moreover, the thickness of each plate-shaped part 42 is about 0.1-0.5 mm, for example. As a material of the auxiliary member 40, for example, metal, plastic, or the like can be used.

  An example of how to use the unlocking prevention tool 3 will be described with reference to FIGS. First, as shown in FIG. 12, the auxiliary member 40 in a state where the plate-like portion 42 is folded is inserted into the gap 96 between the side surface of the door 90 and the surface facing the side surface (side surface of the door frame 94). To do. At this time, the auxiliary member 40 is fixed so that the auxiliary member 40 extends inside the door 90. Thereby, the auxiliary member 40 constitutes the vertical surface in a state of extending from the gap 96 to the inside of the door 90.

  Next, as shown in FIG. 13, the rod-shaped member 10 is fixed horizontally between the knob 93 and the auxiliary member 40. At this time, as shown in FIGS. 14 and 15, the abutment surface 12 and the abutment surface 14 abut on the knob 93 and the auxiliary member 40, respectively. Specifically, the contact surface 14 contacts the portion of the auxiliary member 40 that faces the knob 93. FIGS. 14 and 15 are an enlarged front view and a plan view, respectively, of the unlocking prevention tool 3 attached to the door 90.

  The rod-shaped member 10 can be fixed as follows, for example. First, the length of the rod-shaped member 10 is adjusted so as to be smaller than the distance between the knob 93 and the auxiliary member 40. Thereafter, the bar-shaped member 10 is placed horizontally and is inserted between the knob 93 and the auxiliary member 40. In this state, the rod-shaped member 10 is extended so that the contact surface 12 and the contact surface 14 come into strong contact with the knob 93 and the auxiliary member 40, respectively. Thereby, the rod-shaped member 10 can be fixed in a state where it is stretched between the knob 93 and the auxiliary member 40. Thus, in the door 90 to which the unlocking prevention tool 3 is attached, the rotation of the knob 93 is regulated by the rod-shaped member 10. For this reason, the rotation of the thumb turn 92 is prevented and the lock cannot be opened.

  The effect of the unlocking prevention tool 3 will be described. In the unlocking prevention tool 3, an auxiliary member 40 is provided. As a result, the auxiliary member 40 is inserted into the gap 96 even when there is no appropriate vertical surface for contacting the contact surface 14 (for example, when the door frame does not extend inside the door). By doing so, the vertical plane can be obtained.

  The auxiliary member 40 includes a plurality of plate-like portions 42. In this case, the thickness of the auxiliary member 40 inserted into the gap 96 can be adjusted by changing the number of the plate-like portions 42. For example, in the present embodiment, only the part of the plate-like portions 42 may be inserted into the gap 96 in a state where only the part of the plate-like portions 42 is folded. Thereby, the auxiliary member 40 can be adapted to various doors having different gaps between the side surface of the door and the surface facing the side surface.

  The plurality of plate-like portions 42 are continuously provided so as to be folded like a folding screen. Thereby, it is possible to prevent the plurality of plate-like portions 42 from being separated from each other. In addition, when a restoring force is applied to return the folded plate-like portion 42 to the original state (the unfolded state), the auxiliary member 40 can be easily fixed to the gap 96 by the restoring force. Other effects of the unlocking prevention tool 3 are the same as those of the unlocking prevention tool 1. In addition, it cannot be overemphasized that the alarm part 30 may be provided in this embodiment.

  The present invention is not limited to the above embodiment, and various modifications can be made. In the said embodiment, the case where a female screw and a male screw were each provided in the inner surface of the outer cylinder 22 and the outer surface of the inner cylinder 24 as a means to fix the length of the rod-shaped member 10 was illustrated. However, instead of providing these female screw and male screw, a screw that penetrates the side surface of the outer cylinder 22 may be provided. By tightening the screw, the tip of the screw is pressed against the side surface of the inner cylinder 24, so that the outer cylinder 22 and the inner cylinder 24 can be fixed to each other. Moreover, the rod-shaped member 10 may have an expansion / contraction mechanism similar to a jack.

DESCRIPTION OF SYMBOLS 1 Unlocking prevention tool 2 Unlocking prevention tool 3 Unlocking prevention tool 10 Bar-shaped member 10a One end part 10b Other end part 10c Middle part 12 Contact surface (1st contact surface)
14 Contact surface (second contact surface)
22 outer cylinder 24 inner cylinder 30 alarm part 32 fixed contact 34 movable contact 40 auxiliary member 42 plate-like part 90 door 92 thumb turn 93 knob part 94 door frame 95 vertical surface 96 gap

Claims (17)

An unlocking prevention tool attached to a door provided with a thumb turn having a knob portion that becomes vertical when locked,
A telescopic rod-shaped member ;
An alarm unit that issues an alarm when the rod-shaped member contracts ,
A first contact surface that contacts the knob portion of the thumb turn is provided at one end of the rod-shaped member,
The other end portion of the rod-shaped member is provided with a second contact surface that contacts a vertical surface parallel to the side surface of the door,
The rod-shaped member is fixed to the door in a state where the first contact surface is in contact with the knob portion of the thumb turn and the second contact surface is in contact with the vertical surface. Unlocking prevention tool. In the unlocking prevention tool of Claim 1,
The bar-shaped member is an unlocking prevention tool that can be fixed to an arbitrary length within a predetermined expansion / contraction range. In the unlocking prevention tool of Claim 2,
The expansion / contraction range is an unlocking prevention tool including a range of 30 mm to 90 mm. In the unlocking prevention tool in any one of Claims 1 thru | or 3,
The first contact surface is an unlocking prevention tool that is softer than a portion other than the one end and the other end of the rod-shaped member. In the unlocking prevention tool of Claim 4,
The first contact surface is an unlocking prevention tool made of an elastic material. In the unlocking prevention tool in any one of Claims 1 thru | or 5,
The second abutment surface is an unlocking prevention tool that is softer than a portion other than the one end and the other end of the rod-shaped member. The unlocking prevention tool according to claim 6,
The second abutment surface is an unlocking prevention tool made of an elastic material. In the unlocking prevention tool in any one of Claims 1 thru | or 7,
An unlocking prevention tool in which the circumferential length of the first contact surface is larger than the circumferential length of a cross section in a portion other than the one end and the other end of the rod-shaped member. The unlocking prevention tool according to claim 8,
The unlocking prevention tool whose circumference of the 1st contact surface is more than twice the circumference of the transverse section. In the unlocking prevention tool in any one of Claims 1 thru | or 9,
The circumferential length of the second contact surface is an unlocking prevention tool that is larger than the circumferential length of a cross section in a portion other than the one end portion and the other end portion of the rod-shaped member. The unlocking prevention tool according to claim 10,
The unlocking prevention tool whose circumference of the 2nd contact surface is more than twice the circumference of the transverse section. In the unlocking prevention tool in any one of Claims 1 thru | or 11 ,
The alarm unit is an unlocking prevention tool that continues to issue the alarm until a predetermined time elapses after the rod-shaped member contracts. The unlocking prevention tool according to claim 12 ,
The alarm unit has a timer,
An unlocking prevention tool that allows the user to set the predetermined time by the timer. The unlocking prevention tool according to claim 12 or 13 ,
The alarm unit is an unlocking prevention tool that continues to issue the alarm until the predetermined time has elapsed even if the rod-shaped member is returned to its original length after the rod-shaped member contracts. In the unlocking prevention tool in any one of Claims 1 thru | or 14 ,
An auxiliary member inserted into a gap between the side surface of the door and the surface facing the side surface;
The auxiliary member is an unlocking prevention tool that constitutes the vertical surface in a state of extending from the gap to the inside of the door. The unlocking prevention tool according to claim 15 ,
The auxiliary member is an unlocking prevention tool comprising a plurality of plate-like portions. The unlocking prevention tool according to claim 16 ,
The plurality of plate-like portions are unlocking preventive tools that are continuously provided so as to be folded like a folding screen.

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