JP6391704B2 - Opening prevention device - Google Patents

Description

  The present invention relates to a door opening prevention device for preventing door opening.

  As a conventional door opening prevention device, for example, there is one described in Patent Document 1. The door opening prevention device described in this document is intended for double swing doors (double doors) consisting of two door plates, and has two suction cups and a string shape such as a wire connecting the suction cups. And a member. By adsorbing a suction cup to each of the two door plates in a state where the string-like member is stretched, the double doors can be prevented from being opened carelessly.

Utility Model Registration No. 3108738

  The door opening prevention device having such a configuration can also be used for a single hinged door made of one door plate. However, in that case, it is necessary to attach a door opening prevention device so as to straddle the door plate and its peripheral part (door frame, wall surface, etc.). Therefore, this door opening prevention device cannot be attached depending on the shape and material of the peripheral portion of the door plate.

  This invention is made | formed in view of the said subject, and it aims at providing the opening prevention apparatus which can be attached irrespective of the shape and material of the peripheral part of a doorplate.

  The door opening prevention device according to the present invention is a door opening prevention device for preventing a door having a door plate provided with a door knob, and prevents a movement of the door knob and a fixing portion fixed to the door plate. And a connecting part that connects the fixing part and the blocking part.

  In this door opening prevention device, a blocking portion for blocking the movement of the doorknob is connected to the fixed portion via the connecting portion. For this reason, the door opening can be prevented by preventing the movement of the door knob itself. Therefore, even when this door opening prevention device is used for a single hinged door, it is not necessary to be mounted so as to straddle the door plate and its peripheral portion. Therefore, the door opening prevention device can be attached regardless of the shape and material of the peripheral portion of the door plate.

  ADVANTAGE OF THE INVENTION According to this invention, the door opening prevention apparatus which can be attached irrespective of the shape and material of the peripheral part of a door board is implement | achieved.

It is a side view which shows 1st Embodiment of the door opening prevention apparatus by this invention. It is a front view which shows the door opening prevention apparatus of FIG. It is a front view which shows the state by which the door-opening prevention apparatus of FIG. 1 was attached to the single swing door. It is a side view which expands and shows the door knob vicinity in FIG. It is a side view which shows 2nd Embodiment of the door opening prevention apparatus by this invention. It is a front view which shows the door opening prevention apparatus of FIG. It is a front view which shows the state by which the door-opening prevention apparatus of FIG. 5 was attached to the single swing door. It is a side view which expands and shows the door knob vicinity in FIG. It is a side view which shows 3rd Embodiment of the door opening prevention apparatus by this invention. It is a front view which shows the door opening prevention apparatus of FIG. It is a top view which shows the prevention part in the door opening prevention apparatus of FIG. It is a front view which shows the state by which the door-opening prevention apparatus of FIG. 9 was attached to the single swing door. It is a front view which expands and shows the doorknob vicinity in FIG. It is a side view which shows 4th Embodiment of the door opening prevention apparatus by this invention. It is a front view which shows the door opening prevention apparatus of FIG. It is a front view which shows the state by which the door-opening prevention apparatus of FIG. 14 was attached to the single swing door. It is a front view which expands and shows the doorknob vicinity in FIG. It is a figure for demonstrating the modification of a prevention part. It is a figure for demonstrating the modification of a connection part. It is a figure for demonstrating the modification of a connection part.

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 side view showing a first embodiment of a door opening prevention device according to the present invention. FIG. 2 is a front view showing the door opening prevention device of FIG. The door opening prevention device 1 prevents opening of a door having a door plate provided with a door knob, and includes a fixing portion 10, a blocking portion 20, and a connecting portion 30.

  The fixing part 10 is a part fixed to the door plate. Specifically, the fixing part 10 is fixed to the surface of the door plate. In this embodiment, the fixing part 10 has a suction cup, and is fixed to the door plate by the suction force of the suction cup. As a material of the suction cup, for example, rubber or synthetic resin can be used. Since the suction cup is used in this way, the door opening prevention device 1 can be attached to and detached from the door. Here, detachable means that the door opening prevention device 1 can be easily attached to and detached from the door without fouling the door or the door opening prevention device 1.

  The blocking part 20 is a part that blocks the movement of the doorknob. As will be described later, the blocking unit 20 blocks the movement of the door knob while in contact with the door knob. The blocking part 20 has a U shape that can hold the door knob in a side view (see FIG. 1). As a material of the blocking unit 20, for example, plastic, wood, metal, or the like can be used.

  The connecting portion 30 is a portion that connects the fixing portion 10 and the blocking portion 20. In the present embodiment, the connecting portion 30 has a rod shape. One end of the connecting portion 30 is fixed to the fixing portion 10. Specifically, one end of the connecting portion 30 is fixed to a knob portion of the suction cup constituting the fixing portion 10. And the connection part 30 is extended in the substantially parallel direction with respect to the fixed surface (surface of a door plate) of the fixing | fixed part 10. FIG. Further, the other end of the connecting portion 30 is fixed to the blocking portion 20. Specifically, the other end of the connecting portion 30 is fixed to the lower end portion of the U-shaped blocking portion 20. For example, plastic, wood, metal, or the like can be used as the material of the connecting portion 30. The connecting part 30 may be formed integrally with the blocking part 20.

  The operation of the door opening prevention device 1 will be described with reference to FIGS. 3 and 4. FIG. 3 is a front view showing a state in which the door opening prevention device 1 is attached to the single door. FIG. 4 is an enlarged side view showing the vicinity of the door knob in FIG. A door knob 94 is provided on the door plate 92 of this single door. The door knob 94 is a lever type door knob. By opening the door knob 94 as shown by an arrow A1 in FIG. 3, the door plate 92 can be opened. At this time, the door knob 94 moves so that the tip is displaced along the circumference.

  As can be seen from FIG. 4, the door opening prevention device 1 is attached so that the door knob 94 enters the inside of the blocking portion 20. That is, the blocking unit 20 is provided so as to block the front of the door knob 94 in the movement direction. At this time, the door knob 94 and the blocking unit 20 may be in contact with each other or may not be in contact with each other. The fixed portion 10 is fixed to the door plate 92 in the front of the door knob 94 in the movement direction.

  In this state, when the door knob 94 is pushed down to open the door, the blocking unit 20 comes into contact with the door knob 94. At this time, the blocking unit 20 supports the door knob 94 while holding the door knob 94. Thus, in this embodiment, the blocking unit 20 is configured to support the door knob 94 from the front in the movement direction of the door knob 94 together with the fixing unit 10 and the connecting unit 30. Thereby, the movable range of the door knob 94 is restricted, and the movement of the door knob 94 is prevented.

  The effect of the door opening prevention device 1 will be described. In the door opening prevention device 1, a blocking portion 20 that blocks the movement of the doorknob is connected to the fixed portion 10 via a connecting portion 30. For this reason, the door opening can be prevented by preventing the movement of the door knob itself. Therefore, even if it is a case where it is used for a single door, the door opening prevention device 1 does not need to be mounted so as to straddle the door plate and its peripheral portion. Therefore, the door opening prevention device 1 can be attached regardless of the shape and material of the peripheral part of the door plate.

  The door opening prevention device 1 is detachable from the door. Thereby, since there is no worry of soiling a building, the door-opening prevention device 1 can be easily used even in a rental house or on the go. For example, even if the room door is not locked at the travel destination, if the door opening prevention device 1 is attached to the door from the inside of the room, the door can be opened unexpectedly from the outside of the room. Can be avoided.

  The fixing part 10 has a suction cup, and is fixed to the door plate by the suction force of the suction cup. Thereby, it is possible to realize the door opening prevention device 1 that can be attached to and detached from the door with a simple configuration. Such a simple configuration is advantageous in terms of ease of carrying the door opening prevention device 1.

  The blocking unit 20 blocks the movement of the door knob while in contact with the door knob. Thereby, the movement of the doorknob can be prevented with a simple mechanism. Actually, in this embodiment, the movement of the door knob is blocked by a simple mechanism in which the blocking portion 20 supports the door knob from the front in the movement direction.

The blocking unit 20 is U-shaped, and supports the door knob while holding the door knob. Thus, the door knob can be reliably supported by the blocking portion 20 by making the lever-type door knob easy to capture.
(Second Embodiment)

  FIG. 5 is a side view showing a second embodiment of the door opening prevention device according to the present invention. FIG. 6 is a front view showing the door opening prevention device of FIG. The door opening prevention device 2 prevents opening of a door having a door plate provided with a door knob, and includes a fixing portion 10, a blocking portion 40, and a connecting portion 30. The structure of the fixing | fixed part 10 and the connection part 30 is as having demonstrated 1st Embodiment.

  The blocking portion 40 is a portion that blocks the movement of the door knob. The blocking unit 40 blocks the movement of the door knob while in contact with the door knob. The blocking portion 40 has a hook shape that can be hooked on the door knob (see FIG. 5). The blocking part 40 is fixed to the connecting part 30 at its upper end. As a material of the blocking unit 40, for example, plastic, wood, metal, or the like can be used.

  The operation of the door opening prevention device 2 will be described with reference to FIGS. 7 and 8. FIG. 7 is a front view showing a state in which the door opening prevention device 2 is attached to the single door. FIG. 8 is an enlarged side view showing the vicinity of the door knob in FIG. The structure of this single swing door is the same as that shown in FIG.

  As can be seen from FIG. 8, the door opening prevention device 2 is attached so that the door knob 94 enters the inside of the blocking portion 40. That is, the blocking unit 40 is provided so as to block the front of the door knob 94 in the movement direction. At this time, the door knob 94 and the blocking unit 40 may be in contact with each other or may not be in contact with each other. The fixed portion 10 is fixed to the door plate 92 at the rear of the door knob 94 in the movement direction.

  In this state, when the door knob 94 is pushed down to perform an opening operation, the blocking unit 40 contacts the door knob 94. At this time, the blocking unit 40 pulls the door knob 94 while being hooked on the door knob 94. As described above, in the present embodiment, the blocking unit 40 is configured to pull the door knob 94 from the rear of the door knob 94 in the moving direction together with the fixing unit 10 and the connecting unit 30. Thereby, the movable range of the door knob 94 is restricted, and the movement of the door knob 94 is prevented.

  The effect of the door opening prevention device 2 will be described. In the door opening prevention device 2, a blocking portion 40 that blocks the movement of the doorknob is connected to the fixed portion 10 via the connecting portion 30. For this reason, the door opening can be prevented by preventing the movement of the door knob itself. Therefore, even if it is a case where it is used for a single door, the door opening prevention device 2 does not need to be mounted so as to straddle the door plate and its peripheral portion. Therefore, the door opening prevention device 2 can be attached regardless of the shape and material of the peripheral part of the door plate.

  The blocking unit 40 blocks the movement of the door knob while in contact with the door knob. Thereby, the movement of the doorknob can be prevented with a simple mechanism. Actually, in the present embodiment, the movement of the door knob is blocked by a simple mechanism in which the blocking portion 40 pulls the door knob from the rear in the movement direction.

The blocking portion 40 has a hook shape, and pulls the door knob while being hooked on the door knob. Thus, the door knob can be reliably pulled by the blocking portion 40 by making the lever type door knob easy to capture. Other effects of the door opening prevention device 2 are the same as those of the door opening prevention device 1.
(Third embodiment)

  FIG. 9 is a side view showing a third embodiment of the door opening prevention device according to the present invention. FIG. 10 is a front view showing the door opening prevention device of FIG. The door opening prevention device 3 prevents opening of a door having a door plate provided with a door knob, and includes a fixing portion 10, a blocking portion 50, and a connecting portion 30. The structure of the fixing | fixed part 10 and the connection part 30 is as having demonstrated 1st Embodiment.

  The blocking part 50 is a part that blocks the movement of the doorknob. The blocking unit 50 blocks the movement of the door knob while in contact with the door knob. As shown in FIG. 11, the blocking portion 50 has a belt shape that can be wound around the door knob. The figure is a plan view showing the blocking unit 50. The blocking portion 50 is fixed to the connecting portion 30 on the back surface (the surface opposite to the surface in contact with the door knob). As a material of the blocking unit 50, for example, cloth, leather, resin, rubber, or the like can be used.

  The operation of the door opening prevention device 3 will be described with reference to FIGS. 12 and 13. FIG. 12 is a front view showing a state in which the door opening prevention device 3 is attached to the single door. FIG. 13 is an enlarged front view showing the vicinity of the door knob in FIG. A door knob 96 is provided on the door plate 92 of the single door. The door knob 96 is a round door knob. By opening the door knob 96, the door plate 92 can be opened. At this time, the door knob 96 rotates (rotates).

  As can be seen from FIG. 13, the door opening prevention device 3 is attached so that the blocking portion 50 is wound around the door knob 96. In the figure, a gap is provided between the door knob 96 and the blocking portion 50 for easy viewing, but both are actually in close contact with each other. In the present embodiment, the blocking portion 50 has a magic tape (not shown) made of a hook and a loop. Specifically, a hook is provided on one surface of the blocking unit 50 and a loop is provided on the other surface. With this magic tape, the state in which the blocking portion 50 is wound around the door knob 96 is maintained. That is, in the portion where one surface and the other surface of the blocking portion 50 overlap, both surfaces are fixed to each other by the magic tape.

  Even if the door opening operation is performed in this state, since the door knob 96 is tightened by the blocking portion 50, the rotational movement is blocked. As described above, the blocking unit 50 blocks the movement of the door knob 96 while being in close contact with the door knob 96.

  The effect of the door opening prevention device 3 will be described. In the door opening prevention device 3, a blocking unit 50 that blocks the movement of the doorknob is connected to the fixed unit 10 via the connecting unit 30. For this reason, the door opening can be prevented by preventing the movement of the door knob itself. Therefore, even if it is a case where it is used for a single door, the door opening prevention device 3 does not have to be attached so as to straddle the door plate and its peripheral portion. Therefore, the door opening prevention device 3 can be attached regardless of the shape and material of the peripheral portion of the door plate.

  The blocking unit 50 blocks the rotational movement of the door knob while in close contact with the door knob. Thereby, the movement of the doorknob can be prevented with a simple mechanism. Actually, in this embodiment, the movement of the door knob is blocked by a simple mechanism in which the door knob is tightened by the blocking portion 50.

  The blocking unit 50 has a belt shape, and tightens the door knob while being wound around the door knob. Thus, the door knob can be securely tightened by the blocking portion 50 by making the shape easy to adhere to the round door knob.

The blocking portion 50 is maintained in a state of being wound around the door knob by the magic tape. By using the magic tape in this way, the blocking portion 50 can be adapted to door knobs of various sizes. Other effects of the door opening prevention device 3 are the same as those of the door opening prevention device 1.
(Fourth embodiment)

  FIG. 14 is a side view showing a fourth embodiment of the door opening prevention device according to the present invention. FIG. 15 is a front view showing the door opening prevention device of FIG. The door opening prevention device 4 prevents a door having a door plate provided with a door knob from being opened, and includes a fixing portion 10, a blocking portion 60, and a connecting portion 30. The structure of the fixing | fixed part 10 and the connection part 30 is as having demonstrated 1st Embodiment. However, in the present embodiment, two fixed portions 10 and two connecting portions 30 are provided.

  The blocking part 60 is a part that blocks the movement of the door knob. The blocking unit 60 blocks the movement of the door knob while in contact with the door knob. The blocking unit 60 includes a holding member 60a (first holding member) and a holding member 60b (second holding member). These holding members 60a and 60b have a shape capable of holding the door knob. Specifically, the upper surfaces (surfaces in contact with the doorknob) of the holding members 60a and 60b are recessed in a cylindrical surface shape (see FIG. 15). The holding member 60a is fixed to one connecting portion 30 on the lower surface thereof. Similarly, the holding member 60b is fixed to another connecting portion 30 on the lower surface thereof. That is, one connecting portion 30 connects one fixing portion 10 and the holding member 60a, and the other connecting portion 30 connects another fixing portion 10 and the holding member 60b. As a material of each holding member 60a, 60b, for example, plastic, wood, metal or the like can be used.

  The operation of the door opening prevention device 4 will be described with reference to FIGS. 16 and 17. FIG. 16 is a front view showing a state in which the door opening prevention device 4 is attached to the single door. FIG. 17 is an enlarged front view showing the vicinity of the door knob in FIG. The structure of this single door is the same as that shown in FIG.

  The door opening prevention device 4 is attached so that the door knob 96 is sandwiched by the blocking portion 60. Specifically, the holding member 60a contacts the door knob 96 from one direction, and the holding member 60b contacts the door knob 96 from the opposite direction, whereby the door knob 96 is held by the holding members 60a and 60b.

  Even if the door opening operation is performed in this state, since the door knob 96 is tightened by the blocking portion 60, the rotational movement is blocked. As described above, the blocking unit 60 blocks the movement of the door knob 96 while being in close contact with the door knob 96.

  The effect of the door opening prevention device 4 will be described. In the door opening prevention device 4, a blocking portion 60 that blocks the movement of the doorknob is connected to the fixed portion 10 via the connecting portion 30. For this reason, the door opening can be prevented by preventing the movement of the door knob itself. Therefore, even if it is a case where it is used for a single door, the door opening prevention device 4 does not need to be attached so as to straddle the door plate and its peripheral portion. Therefore, the door opening prevention device 4 can be attached regardless of the shape and material of the peripheral portion of the door plate.

  The blocking unit 60 blocks the rotational movement of the door knob while in close contact with the door knob. Thereby, the movement of the doorknob can be prevented with a simple mechanism. Actually, in this embodiment, the movement of the doorknob is blocked by a simple mechanism in which the doorknob is tightened by the blocker 60.

  The blocking unit 60 includes holding members 60a and 60b that are in contact with the door knob from opposite directions, and tightens the door knob in a state where the door knob is sandwiched between the holding members 60a and 60b. In this way, the door knob can be securely tightened by the blocking portion 60 by adopting a configuration that is easily adhered to the round door knob. Other effects of the door opening prevention device 4 are the same as those of the door opening prevention device 1.

  The door opening prevention device according to the present invention is not limited to the above embodiment, and various modifications are possible. In the said embodiment, the example which the fixing | fixed part 10 has a suction cup was shown. However, the fixed part 10 may have a magnet instead of the suction cup or together with the suction cup. In that case, the fixing | fixed part 10 can be fixed to a steel door board with the magnetic force of the said magnet.

  In the said embodiment, elastic members, such as rubber | gum, may be provided in the part which touches the doorknob in each prevention part 20,40,50,60. Thus, by providing an elastic member in a contact part with a doorknob, it becomes difficult to damage a doorknob. Moreover, about the blocking parts 50 and 60, the frictional force which acts between doorknobs can be enlarged, and the movement of a doorknob can be blocked | prevented more reliably.

  In the said embodiment, the U-shaped prevention part 20 and the hook-shaped prevention part 40 were illustrated as a prevention part which blocks | prevents the movement of a lever-type doorknob. However, the shape of the blocking portion is arbitrary as long as the movement of the doorknob is blocked. For example, an annular blocking portion 70 shown in FIG. 18 may be used as such a blocking portion. In that case, the door opening prevention device is attached so that the door knob passes inside the blocking portion 70.

  In the said embodiment, the connection part 30 which does not deform | transform was illustrated. However, the connecting part 30 may be deformable. For example, the connection part 30 may be comprised so that length can be adjusted. Further, as shown in FIG. 19 and FIG. 20, the connecting portion 30 includes a rod-shaped member 30a (first rod-shaped member) and a rod-shaped member 30b (second rod-shaped member) that are connected to each other. You may be comprised so that angle (alpha) which rod-shaped member 30a, 30b makes can be adjusted. In FIG. 19, rod-like members 30a and 30b are aligned in a straight line (α = 180 °). On the other hand, in FIG. 20, the rod-shaped members 30a and 30b intersect at right angles (α = 90 °). Thus, when the connection part 30 is deformable, the position of the blocking part can be finely adjusted even after the door opening prevention device is attached to the door. Moreover, even if the door opening prevention device is attached to the door, the door opening operation can be performed as necessary.

  In the said embodiment, the example using a door opening prevention apparatus for a single swing door was shown. However, the door opening prevention device according to the present invention can be used for a double door or a sliding door as long as it has a door plate provided with a door knob.

DESCRIPTION OF SYMBOLS 1 Door opening prevention apparatus 2 Door opening prevention apparatus 3 Door opening prevention apparatus 4 Door opening prevention apparatus 10 Fixing part 20 Blocking part 30 Connection part 30a Bar-shaped member (1st bar-shaped member)
30b Bar-shaped member (second bar-shaped member)
40 blocking part 50 blocking part 60 blocking part 60a holding member (first holding member)
60b Holding member (second holding member)
70 Blocking portion 92 Door plate 94 Door knob 96 Door knob

Claims (7)

A door opening prevention device for preventing door opening of a door having a door plate provided with a circular door knob that rotates .
A fixing portion fixed to the surface of the door plate;
A blocking portion for blocking movement of the door knob in a state of being in close contact with the door knob;
A connecting portion that connects the fixing portion and the blocking portion;
The blocking unit includes a first holding member that contacts the door knob from one direction, and a second holding member that is provided separately from the first holding member and contacts the door knob from the opposite direction, The door knob is configured to be tightened in a state where the door knob is sandwiched between the first and second holding members,
The said opening part does not have a mechanism for adjusting the length of the said connection part, The door opening prevention apparatus characterized by the above-mentioned. In the door opening prevention device according to claim 1,
The door opening prevention device is a door opening prevention device that is detachable from the door. The door opening prevention device according to claim 2,
The said fixing | fixed part has a suction cup, The door opening prevention apparatus fixed to the surface of the said door board with the adsorption | suction force of the said suction cup. In the door opening prevention device according to claim 2 or 3,
The said fixing | fixed part has a magnet, The door opening prevention apparatus fixed to the surface of the said door board with the magnetic force of the said magnet. In the door opening prevention apparatus in any one of Claims 1 thru | or 4 ,
The fixing part and the connecting part are provided two by two,
The one connecting portion connects the one fixing portion and the first holding member,
The other connecting portion is a door opening prevention device for connecting another fixing portion and the second holding member. In the door opening prevention apparatus in any one of Claims 1 thru | or 5 ,
The door opening prevention apparatus in which the elastic member is provided in the part which touches the door knob in the blocking part. The door opening prevention device according to claim 6 ,
The elastic member is a door opening prevention device made of rubber.

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