JP4663416B2 - Door opening prevention device - Google Patents

Description

  The present invention relates to a door opening prevention device for preventing an infant or the like from opening a door and the like, and more specifically, to a door opening prevention device suitable for a door body of a refrigerator.

  Infants from 3 to 6 years of age are interested in everything they see, and gradually add wisdom by touching them with their hands or putting them in their mouths. It is better not to touch dangerous materials such as medicines, blades and lighters as much as possible.

  Therefore, various preventive devices for preventing an infant from causing such an accident, so-called child lock devices, have been proposed. As one of the child lock devices, there is a door opening prevention device for a door body such as a cupboard.

  For example, as shown in Patent Document 1, a door opening prevention device is spanned between a pair of base parts attached at symmetrical positions across a door stop of a furniture door, and between the base parts across the door stop. And an arm portion, thereby preventing a child from opening the door unnecessarily.

  By the way, if it is attached to a place where the hand of an infant cannot reach, such as a tall refrigerator, it is possible to simply restrict the opening and closing of the door without having a complicated locking mechanism as in Patent Document 1. I can do it. As this type of simple locking mechanism, there is a latch lock type hook structure.

  This latch lock type hook structure has a hook at the tip, and is provided with a lever biased in the closing direction by a spring and a receiving member having a convex locking portion, and when the door is closed, the hook is Over the locking part, it is locked to the locking part. However, when a door opening prevention device having this type of hook structure is used for a door body such as a refrigerator, there are the following problems.

  In other words, since the refrigerator has a magnet cushion between the housing and the door to prevent the cool air from escaping, when the door is subjected to an impact, a load is applied to the lever due to the absorption repulsion of the cushion, and the lock is locked. Often unlocked. Moreover, if the lock is only released, the door may remain open due to the unlock.

  Moreover, this kind of door opening prevention device is generally attached via a double-sided adhesive tape, but the period during which infants' safety measures are required is about three years. Therefore, it will be removed after the period, but there is also a problem that the adhesive surface of the double-sided adhesive tape remains on the attached surface and the attached surface becomes dirty.

JP 2004-360192 A

  Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an inexpensive door opening prevention device that can easily and reliably regulate the opening and closing of a door body such as a refrigerator.

In order to achieve the above-described object, the present invention has several features described below. The invention according to claim 1 includes a pair of base portions that are disposed opposite to each other at predetermined positions on the mounting surface across the door stop of the door body, and one base portion has a convex locking portion. provided, the other base portion has a hook portion for engaging with the locking portion during closing, the door opening prevention device lever is biased in the locking direction by a spring means is provided, each The base portion is provided with a pair of guide grooves into which a rectangular attachment plate attached to the attachment surface via a stretch release tape is inserted, and the guide grooves are arranged on the side edges of the attachment plate. The mounting plate is inserted in either direction of the open end of the guide groove so as to be slidable along the length direction of the guide groove. Provided on one side of the mounting plate. A stopper that abuts against the insertion side open end of the guide groove is provided, and the other side of the mounting plate is inserted into the opposite end of the guide groove to the open end, and to the opposite end of the insertion side. When the decorative plate having a stopper that contacts with the base plate is disposed, the mounting plate is fixed to the base portions via the guide grooves .

According to a second aspect of the present invention, in the first aspect, the mounting plate has a size that exposes at least a knob portion of the stretch-release tape, and the base portion includes the stretch-release tape. It is characterized by having a size that covers the entire board .

According to a third aspect of the present invention, in the first or second aspect of the present invention, the hook portion has a reverse tapered shape on a locking surface facing the locking portion .

According to a fourth aspect of the present invention, in the third aspect of the present invention, the opposing surface of the locking portion that faces the hook portion is also an inversely tapered shape .

  According to the present invention, since the locking surface of the hook portion has a reverse taper shape, even when an impact is applied to the door, the locking portion can be reliably supplemented by the hook portion, and the lock is released. Can be prevented. Furthermore, the position of the mounting plate can be freely changed according to the mounting location, and the stretched release tape can be clearly hidden.

Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. FIG. 1 is a perspective view showing a use state of a door opening prevention device according to an embodiment of the present invention, FIG. 2 is a perspective view showing an unlocking state of the door opening prevention device, and FIGS. FIG. 4 is an exploded rear view of the base portion, and FIG. 4 is a front view, a rear view, a bottom view, a central cross-sectional view, and FIG.

  In this example, the door opening prevention device is for a refrigerator, but if it is a rotary single door, a sliding single door, a double door, or a drawer, it can be applied to various furniture such as a cupboard. .

As shown in FIG. 1, the door opening prevention device 1 includes a pair of bases that are attached to a side surface of the refrigerator body R and an end surface of the door body D across a door contact D1 between the refrigerator body R and the door body D. Parts 2 and 3 and a lever part 4 spanned between the base parts 2 and 3. In this example, the base portions 2 and 3 and the lever portion 4 are both made of a synthetic resin molded product.

  Referring to FIGS. 2 and 3D, one base portion 2 (hereinafter referred to as first base portion 2) has a base 21 formed in a rectangular shape and a back surface side of the base 21. And a mounting plate 22 that is detachably mounted.

  On the front surface of the base 21, a locking projection 23 that is locked to the lever portion 4 is projected. The locking projection 23 includes a locking surface 231 perpendicular to the base 21 and a tapered surface 232 whose height gradually decreases from the locking surface 231 toward the surface of the base 21.

  The taper surface 232 is an inclined surface that inclines in the closing direction of the door body D (the direction from right to left in FIG. 3D and the direction approaching the other base portion 3), and is tapered when the door body D is closed. The lever portion 4 is dropped onto the locking surface 231 over the surface 232, so that the movement in the opening direction is restricted.

  Referring also to FIG. 4, guide grooves 211 and 211 into which the mounting plate 22 is inserted are provided on both sides of the back surface of the base 21. As shown in FIG. 3D, both ends of each guide groove 211 are formed in a U-shaped cross section, and both ends of the mounting plate 22 are slidably sandwiched therebetween. In this example, the guide grooves 211 and 211 are formed at both ends. In addition to this, for example, a key groove is formed in the center of the bottom surface, and a key that matches the key groove is formed on the mounting plate 22 side. It may be slidably attached.

  Lock grooves 212 and 212 that fit with lock projections 223 and 223 provided on both sides of the mounting plate 22 are provided in a part of the guide grooves 211 and 211. In this example, the locking grooves 212, 212 may have the mounting plate 22 inserted in either the upper direction or the lower direction, and for fitting the decorative plate 24, the upper ends of the guide grooves 211, 211 and Two locations are provided on the lower end side (total of 4 locations).

The mounting plate 22 is formed of a plate-like body having a sticking surface 221 to which the double-sided adhesive tape T is pasted, and guide ribs for inserting the mounting plate 22 along the guide grooves 211 and 211 on the base 21 side on both side surfaces. 222, 222 are provided. The guide ribs 222 and 222 are formed in a parallel rail shape, and the convex portions 223 and 223 that fit into the notches 212 and 212 of the guide grooves 211 and 211 are provided on the side portions thereof.

A stopper 224 is provided at the end (the upper end in FIG. 4 ) of the mounting plate 22 to determine the coupling position when it is inserted into the base 21. The stopper 224 includes an enlarged diameter portion having a width larger than the width of the mounting plate 22, and the mounting plate 22 stops at a fixed position when the stopper 224 contacts the end of the base 21.

  In this example, the attachment plate 22 is a double-sided adhesive tape for attachment to the attachment surface. By pulling the tape base material in the vertical direction, the adhesive strength decreases, and the drawing can be peeled cleanly without causing adhesive residue. A release tape T is used.

  Both ends of the guide grooves 211 and 211 are open toward both ends of the base 21 (upper and lower ends in FIG. 4). According to this, for example, even when there is a ceiling or the like on the refrigerator R and the attachment plate 22 cannot be inserted from above, the attachment plate 22 can be inserted and attached from below the base portion 2. .

The stretch releasing tape T is its knob T1 is attached so as to protrude from the mounting plate 22, the protruding state of the knob portion T1 is visible from the outside is undesirable on visual quality. Therefore, in the present invention, the base 21 is formed larger than the mounting plate 22 by at least the knob portion T1 so that the knob portion T1 cannot be seen from the outside.

Further, from the viewpoint of design, a decorative plate 24 for closing the opening on the lower end side is provided on the lower end side of the base 21. As shown in FIG. 4, the decorative plate 24 includes a guide portion 241 inserted along the guide grooves 211 , 211, and a stopper 242 integrally formed on one end side of the guide portion 241. By inserting the plate 24 into the opening on the side opposite to the mounting plate 22, the base 21 becomes vertically symmetric. Convex stoppers 243 and 243 fitted in the locking grooves 212 and 212 are provided on the side surface of the decorative plate 24.

  Referring to FIGS. 3A to 3D again, the other base portion 3 (hereinafter referred to as the second base portion 3) has the same rectangular base 31 as the first base portion 2. The lever portion 4 is attached to the base 31 so as to be tiltable about the vertical rotation axis.

  Note that the mounting plate 32 is also provided on the back surface of the base 31, but the configuration of the mounting plate 32 is the same as that of the mounting plate 22 of the first base plate 2, and the description thereof is omitted.

  The base 31 is provided with a pedestal portion 34 that pivotally supports the lever portion 4. The pedestal portion 34 protrudes from the central portion of the base 31, and support shafts 341 and 341 that pivotally support the lever portion 4 are provided coaxially at both ends (upper and lower ends in FIG. 2). .

  By attaching bearing holes 41, 41 provided on both side surfaces of the lever portion 4 to the support shafts 341, 341, the lever portion 4 is pivotally supported around the support shafts 341, 341. The base 31 is further provided with a spring member 35 for constantly pressing the lever portion 4 and its free end (right end in FIG. 3D) toward the first base portion 2 side.

  As shown in FIG. 3 (d), the spring member 35 is formed of a plate spring obtained by bending a plate-shaped metal piece into a dogleg shape, and is sandwiched between the base 31 and the lever portion 4. Thereby, the free end side of the lever part 4 is always pressed toward the 1st base part 2 which opposes. The spring member 35 may be a compression spring, for example, instead of the leaf spring.

The lever portion 4 is formed of a rectangular plate spanned between the base portions 2 and 3, and is formed in a U-shaped cross section that is recessed on the inside. The above-described bearing holes 41, 41 are provided on the side surface of the lever portion 4, and a concave portion 42 serving as a guide for pressing with a finger is provided on the surface thereof.

  As shown in FIG. 3 (d), a hook portion 43 that is locked to the locking convex portion 23 of the first base portion 2 is provided at the free end (tip) of the lever portion 4. The hook portion 43 has a hook surface 431 that is disposed opposite to the locking surface 231 of the locking projection 23, and the hook surface 431 has a reverse taper (less than 90 °) with respect to the locking surface 231. Is formed. In other words, the hook surface 431 is inclined so that the tip end thereof is in contact with the base portion of the locking projection 23.

  According to this, when the door body D is closed with a strong impact, for example, the door body D is pushed back by the repulsive force of a magnet cushion (not shown), and the first base portion 2 tends to move to the right side in FIG. At this time, since the locking projection 23 and the hook surface 431 mesh with each other, the locked state can be reliably maintained.

In this example, the locking surface 23 1 facing is a vertical plane relative to the base 21 may be formed as an inverse tapered surface parallel to the hook surface 431. According to this, it can be locked more firmly. In this case, the door body D is pushed a little to loosen the locked state, and then the lever part 4 is lifted to release the lock.

In addition, when closing the door body D, the hook part 43 gets over the taper surface 232 by the side of the latching convex part 23, and captures the latching convex part 23. FIG.

  Next, an example of a procedure for using the door opening prevention device 1 will be described. First, the gripping portion T1 protrudes from the extending peeling tape T as a double-sided adhesive tape on the mounting plates 22 and 22 of the base portions 2 and 3 of the door opening prevention device 1 in a state assembled in advance as shown in FIG. paste.

Next, as shown in FIG. 1, the first base portion 2 and the second base portion 3 are placed on the side surface of the refrigerator body R and the end surface of the door body D so as to sandwich the door contact D1 between the refrigerator body R and the door body D. paste. Thereby, opening and closing of the door body D is controlled by the lever part 4 being spanned over the door stop D1.

  In order to release this lock, it is only necessary to push the concave portion 42 of the lever portion 4 attached to the second base portion 3 with one hand. That is, by pressing the concave portion 42 of the lever portion 4, the free end side (hook portion 43 side) of the lever portion 4 is lifted against the pressing force of the spring member 35, and the hook portion 43 is engaged with the locking convex portion. By releasing from 23, the lock is released. As a result, the door D can be opened and closed.

In order to lock again, the door D may be closed as usual. That is, as the door body D is closed, the tapered portion 44 of the lever portion 4 moves along the tapered surface 232 on the locking convex portion 23 side, and finally gets over and is locked to the locking surface 231. By doing so, it becomes a locked state.

  For example, in order to remove the door opening prevention device 1 from the refrigerator when it becomes unnecessary, first, the bases 21 and 31 of the base portions 2 and 3 attached to the refrigerator main body R and the door body D are lifted up. Remove. As a result, only the mounting plates 22 and 32 are left on the wall surface.

  Therefore, the user presses the mounting plates 22 and 32 with one hand, grasps the knob portion T1 of the stretch-release tape T protruding from the lower ends of the mounting plates 22 and 32 with the other hand, and pulls it downward. . As a result, the stretch-release tape T is stretched and peeled off from the wall surface due to a decrease in its adhesive strength. In this way, by removing the stretch release tape T, the mounting plates 22 and 32 can be easily and cleanly peeled off without causing adhesive residue.

  In this example, the door opening prevention device 1 has the first base portion 2 attached to the side surface of the refrigerator main body R and the second base portion 3 having the lever portion 4 attached to the end surface of the door body D. Depending on the case, conversely, the second base part 3 may be installed on the refrigerator main body R side, and the first base part 2 may be installed on the door body D side.

  In this embodiment, the door opening prevention device 1 is illustrated as being applied to a rotary door body that rotates about a predetermined rotation axis, but besides this, as a door body such as a vegetable room or a freezer room You may apply to the drawer-type door body used well. In addition, the application target is not limited to the refrigerator, and may be used by being attached to a door or drawer of various furniture such as a cabinet as long as it is a single-opening door, a sliding single-opening, or a double-opening door.

The perspective view which shows the state which applied the door opening prevention apparatus which concerns on one Embodiment of this invention to the refrigerator. The perspective view of the state which lifted the lever part of the said door opening prevention apparatus. (A): Front view of the door opening prevention device, (b): Rear view of the door opening prevention device, (c): Plan view of the door opening prevention device, (d) Front view of the door opening prevention device. Central cross-sectional view. The disassembled rear view of the 1st base part explaining the attachment state of an attachment plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door open prevention apparatus for refrigerator 2 1st base part 21 Base 22 Mounting plate 23 Locking convex part 24 Decorative plate 3 2nd base part 31 Base 32 Mounting plate 33 Decorative plate 34 Base part 35 Spring member 4 Lever part 41 Bearing hole 42 Recess 43 Hook 44 Tapered R Refrigerator body D Door body D1 Door contact

Claims (4)

It includes a pair of base portions that are arranged opposite to each other at a predetermined position on the mounting surface across the door contact of the door body, one base portion is provided with a convex locking portion, and the other base portion is In the door opening prevention device having a hook portion that is locked to the locking portion when the door is closed and provided with a lever that is biased in the locking direction by a spring means.
Each of the base portions is provided with a pair of guide grooves into which a mounting plate to be attached to the attached surface via a stretch release tape is inserted,
The guide groove is formed in a U-shaped cross section so as to sandwich the side edge of the mounting plate.
The mounting plate is provided so as to be able to be inserted from any direction of the open end of the guide groove so as to be slidable along the length direction of the guide groove.
A stopper is provided on one side of the mounting plate so as to abut on the insertion side open end of the guide groove. On the other side of the mounting plate, the stopper groove is on the side opposite to the insertion side of the guide groove. The mounting plate is fixed to each of the base portions via the guide grooves by disposing a decorative plate that is inserted and provided with a stopper that contacts the open end on the opposite insertion side. Door opening prevention device. Upper Symbol mounting plate has a size for exposing at least the knob portion of the stretch release tape, the base portion, characterized in that it comprises a size that covers the entire said mounting plate including the stretch release tape The door opening prevention device according to claim 1.   The door opening prevention device according to claim 1 or 2, wherein the hook portion has a reverse tapered shape on a locking surface facing the locking portion.   The door opening prevention device according to claim 3, wherein a surface of the locking portion that faces the hook portion is also reversely tapered.

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