JP2006342539A - Door opening preventing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door opening preventing device for preventing a child from unlocking a door by mischief. <P>SOLUTION: A first base part 2 and a second base part 3 are installed straddlingly the door stops D1 of doors D and D, connected to each other through an arm part 4, and double-locked by a first lock means having, on the first base part 2, a locking projected part 241 projected and recessed toward the arm part 4 and a second lock means having a locking claw 53 projected and recessed toward a guide groove 42. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a door opening prevention device for preventing an infant from unnecessarily opening a door such as a cupboard, and more particularly to a door opening prevention device that is difficult to operate even for an infant who has acquired intellectual education. .

  In general, infants aged 0 to 3 years of intellectual development are interested in everything they see, and gradually gain wisdom by touching them with their hands or putting them in their mouths. It is better not to touch dangerous objects such as things, medicines and knives as much as possible. In addition, a large storage such as a closet has a heavy door, and there is a risk of injury if a finger is caught.

  Accordingly, various door opening prevention devices that restrict the opening and closing of the door have been proposed in order to prevent an infant from causing such an accident. For example, the door opening prevention device described in Patent Document 1 has a pair of base portions that are attached to symmetrical positions across a door stop of a furniture door, and an arm portion can be rotated on a support shaft of one base portion. By attaching and locking the arm part to the other base part, opening and closing is restricted by arranging the arm part across the door stop.

  The arm portion has a lock lever as a lock means, and the lock is released by moving the lock lever in two stages. According to this, when locked, it cannot be easily opened for an infant.

  That is, in order to release the lock, first, the lock lever must be lifted up to be in a semi-unlocked state, and then the lock must be released by a two-step method in which the locking claw is moved sideways. is there.

  However, the door opening prevention device has the following problems. In other words, infants up to about 1 year old do not have the wisdom to unlock yet, but if they become 2 or 3 years old with early intellectual development, the unlocking method can be easily detected and the lock may be released. . In addition, once this age is reached, once the lock is released, it is easy to release it again.

  Moreover, many infants only unlock unilaterally and do not lock again. Therefore, the door is always left in an openable state, and there is a possibility of causing secondary damage such as spreading the stored item on the floor and stepping on it.

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 a door opening prevention device that is not easily unlocked by mischief.

  In order to achieve the above-described object, the present invention has several features described below. The invention according to claim 1 is a pair of base portions attached at symmetrical positions across the door stop of the door body, the first base portion having a locking shaft and the second base portion having a support shaft, An arm portion spanned between the base portions, and the arm portion is rotatably supported on the support shaft of the second base portion and is also locked to the locking shaft of the first base portion. In the door opening prevention device in which the locking shaft is releasably held in the guide groove by a predetermined locking means, the locking means has the locking shaft in the guide groove. In a locked state in which the arm portion is engaged, first locking means that engages with a predetermined portion of the arm portion and holds the arm portion in a non-rotatable manner so that the locking shaft does not come off from the guide groove. Second locking hand for closing the opening of the guide groove Has the door, by operating the first and second locking means simultaneously, it is characterized in that the locked state of the arm part is released.

  According to a second aspect of the present invention, in the first aspect of the present invention, the first base portion is a first base that protrudes and protrudes toward a locking surface formed inside the arm portion as the base 1 locking means. There are provided a locking claw, a first spring means for always projecting the first locking claw toward the arm portion, and a lock release button for separating the first locking claw from the arm portion. It is characterized by.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the arm portion includes a lock lever having a second locking claw that protrudes and projects toward the guide groove as the second lock means, A second spring means for always projecting the second locking claw into the guide groove through a lock lever and a lock release lever connected to the lock lever are provided.

  According to the first to third aspects of the invention, by providing the double lock mechanism of the push button type first lock means and the slide type second lock means, it is difficult for an infant to unlock, A door opening prevention device that is easy to operate for adults can be provided.

  Next, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to this. FIG. 1 is a perspective view showing a use state of a door opening prevention device according to an embodiment of the present invention, and FIG. 2 is a perspective view of the door opening prevention device. 3 (a) is a front view of the door opening prevention device, FIG. 3 (b) is a rear view thereof, FIG. 3 (c) is a plan view thereof, and FIG. 3 (d) is a bottom view thereof.

  The door opening prevention device 1 is used by being mounted so as to straddle the door contact D1 of each door body D, D of the furniture F having the double-open doors D, D on the front surface, for example. 3 (a) to 3 (d), the door opening prevention device 1 includes a pair of base portions 2 and 3 attached to symmetrical positions of the door bodies D across the door stop D1, and a base portion. 2 and 3, and an arm portion 4 spanned between the two. In this example, the base portions 2 and 3 and the arm portion 3 are both made of a synthetic resin molded product.

  FIG. 4A shows a front view of one base portion 2 (hereinafter referred to as the first base portion 2), and FIG. 4B shows a left side view thereof. According to this, the base part 2 (hereinafter referred to as the first base part 2) is erected in the center of the base 21 and the base 21 attached to the mounting surface (in this example, the door body D). The locking shaft 22 is provided.

  The base 21 is made of, for example, a rectangular plate body, and a mounting plate 23 for attaching the first base portion 2 to the door body D is detachably provided on the back side thereof as shown in FIG. It has been. The mounting plate 23 is made of a plate-like body having a sticking surface 231 to which the double-sided adhesive tape T is stuck, and guide ribs 232 for inserting the mounting plate 23 along the guide grooves 211 on the base 21 side on both side surfaces. 232 is provided.

  At the end (the lower end in FIG. 5) of the mounting plate 23, there are provided knob portions 233 and 233 that are picked up by fingers when the mounting plate 23 is inserted into the first base portion 2. The knob portions 233 and 233 are formed in a parallel rail shape along the guide ribs 232 and 232 so as to be elastically deformable, and convex portions that fit into the notches 212 and 212 of the guide groove 211 are formed on the side portions thereof. Portions 234 and 234 are provided.

  In this example, the double-sided pressure-sensitive adhesive tape T is a stretch-release tape whose adhesive strength is reduced by pulling the tape base material in the vertical direction. This type of stretch-release tape has its end protruding from the mounting portion so that it can be pulled, but this does not look good.

  Therefore, the area of the mounting surface 231 is formed to be smaller than the bottom area of the base 21 so that the end of the stretched release tape cannot be seen. That is, by reducing the area of the mounting surface 23r1, when removing the mounting plate 24, the knob portion T1 of the stretch-release tape T is devised so as to be exposed therefrom.

  Referring to FIGS. 4A and 4B again, the locking shaft 22 is integrated with a locking rod 221 introduced into a guide groove 42 of the arm portion 4 described later, and a distal end of the locking rod 221. And a diameter-enlarging portion 222 for retaining. The axial length of the locking rod 221 is set slightly longer than the thickness of the arm portion 4.

  As shown in a cross-sectional view of FIG. 6 (a right-side cross-sectional view of the first base portion 2), the base 21 is provided with a lock portion 24 as a first lock means for the arm portion 4. The lock portion 24 is made of an elastically deformable plate body, one end side (upper end side in FIG. 6) is fixed to the bottom surface of the base 21, and the other end side (lower end side in FIG. 6) is cantilevered as a free end. ing. The arm portion 4 is provided with a locking portion as a counterpart of the lock portion 24. In this example, the locking portion is inside the side wall surface of the arm portion 4 formed in a U-shaped cross section.

  The lock portion 24 is provided with a locking convex portion 241 that protrudes and indents toward the inside of the arm portion 4 and an unlock button 242 for unlocking the locking convex portion 241. The locking convex part 241 has a triangular cross section projecting toward the arm part 4, and the base is provided through the communication hole 213 opened in the base 21 by spring elasticity provided in the plate material of the lock part 24. It protrudes to the surface side of 21.

  The locking convex portion 241 has a tapered surface 241a whose height increases in the closing direction of the arm portion 4 (downward in FIG. 6), and the inner periphery of the arm portion 4 is on the terminal side of the tapered surface 241a. A flange portion 241b is provided that is locked along the surface.

  The unlock button 242 is integrally projected as a convex shape on the free end side of the lock portion 24, and spring elasticity provided in the plate material of the lock portion 24 through a button insertion hole 214 provided in the base 21. It protrudes to the surface side of the base 21. According to this, when the unlocking button 242 is pressed, the locking convex portion 241 is drawn to the base 21 side, and the lock with the arm portion 4 is released.

  Referring to FIGS. 3A to 3D again, the other base portion 3 (hereinafter referred to as the second base portion 3) has the same base 31 as the first base portion 2, for example. A support shaft 32 that rotatably supports the arm portion 4 is provided at the center thereof.

  On the back surface side of the base 31, a mounting plate 33 that is fixed to a surface to be mounted via a predetermined fixing means (in this example, a double-sided adhesive tape) is detachably provided. Since the structure of the mounting plate 33 is the same as that of the mounting plate 22 of the first base portion 2, the description thereof is omitted.

  The support shaft 32 includes a locking rod 321 as a rotating shaft that rotatably supports the arm portion 4 in the same manner as the first base portion 2 described above, and a diameter-enlarged portion 322 formed at the tip of the locking rod 321. It has. The arm portion 4 is rotatably attached to the support shaft 32 by inserting a bearing portion (not shown) into the locking rod 321 and then attaching the enlarged diameter portion 322 to the locking rod 321.

  FIG. 7A is a rear view of the arm unit alone as viewed from the back side, and FIG. 7B is a rear view of the unlocked state by moving the lock lever. The arm portion 4 is a plate body having a U-shaped cross section that spans between the first and second base portions 2 and 3, and a second for locking the arm portion 4 to the first base portion 2 inside. A lock lever 5 is provided as a locking means.

  A bearing hole 41 that is pivotally supported by the support shaft 32 of the second base portion 3 is provided on one end side (left side in FIG. 7A) of the arm portion 4. The arm portion 41 is rotatably supported by the second base portion 3 with the bearing hole 41 as a central axis.

  On the other end side (the right side in FIG. 7A) of the arm portion 4, a guide groove 42 into which the locking rod 221 of the first base portion 2 is introduced is provided. The guide groove 42 is formed along the rotation locus of the arm portion 4. The groove width of the guide groove 42 is slightly wider than the diameter of the locking rod 221.

  The lock lever 5 includes a lever main body 51 that is slidable along the length direction of the arm portion 4, and is in contact with the outer wall surface of the insertion hole 41 of the locking rod 221 on the side opposite to the guide groove of the lever main body 51. A spring member 52 is provided that always presses the lever body 51 toward the guide groove 42 side.

  In the center of the lever body 51, a guide hole 56 into which a guide boss 43 formed in the center of the arm portion 4 is inserted is provided. The guide hole 56 is formed in an oval shape along the sliding direction of the lever main body 51, and the guide boss 43 having substantially the same diameter is inserted into the guide hole 56, thereby reliably guiding the lever main body 51 in the sliding direction. The guide boss 43 and the guide hole 56 also serve as a restricting means for restricting the movement distance of the lock lever 5 in the sliding direction.

  A locking claw 53 protruding toward the guide groove 42 is provided on one end side of the lever body 51 in the sliding direction. The locking claw 53 is formed with a flange portion 54 that bites the locking rod 221 in the locked state.

  In this example, the locking claw 53 has a tapered surface so as to easily enter the insertion direction of the locking shaft 22 with respect to the guide groove 42, and the flange portion 54 is provided at an acute angle with respect to the tapered surface 232. In this example, the horizontal plane is parallel to the sliding direction.

  Release levers 55 and 55 for sliding the lock lever 5 are provided at both ends of the lock lever 5 (upper and lower ends in FIG. 7A). The release levers 55 and 55 are integrally attached to the lock lever 5 and protrude slidably up and down the arm portion 4.

  One end of the spring member 52 is connected to the anti-locking claw 53 side of the lever main body 51, the other end is in contact with the inner peripheral surface of the arm portion 4, and is made of a thin hinge bent in a U shape. In this example, the spring member 52 is integrally formed with the lever main body 51. However, other than this, the spring member 52 may be formed of a normal metal compression spring.

  Next, an example of a procedure for using the door opening prevention device 1 will be described with reference to FIGS. First, when attaching the door opening prevention device 1 to the doors D and D of the furniture F, the mounting plates 23 of the base portions 2 and 3 of the door opening prevention device 1 in a state assembled in advance as shown in FIG. A double-sided adhesive tape T is affixed to 23.

  Next, as shown in FIG. 1, the adhesive surface can be easily attached by sticking the door bodies D and D so as to sandwich the door stop D1. Thereby, opening and closing of the door bodies D and D can be controlled by the arm part 4 being bridged so as to straddle the door stop D1.

  In releasing the lock, first, as shown in FIG. 8, the unlock button 242 of the first base 2 is pushed with one hand (for example, the left hand). As a result, as shown in FIG. 6, the locking projection 241 is pulled into the base 21 via the lock portion 24, and the lock with the arm portion 4 is released.

  Even in this state, the arm portion 4 is still locked. Therefore, while maintaining this state, if the other hand (in this case, the right hand) is used to pinch the unlocking levers 55 and 55 of the arm portion 4 and slide it in the unlocking direction (leftward in FIG. 7B), The lock lever 5 in the arm portion 4 slides to the left, and the locking claw 53 of the lock lever 5 is pulled inward to release the lock.

  Finally, as shown in FIG. 8, the user lifts the arm portion 4 in the unlocked state, so that the arm portion 4 rotates around the second base 3 and is drawn into the guide groove 42. The door rods D and D can be opened and closed by releasing the locking rod 221 that has been released.

  When locking again, it is not necessary to repeat the unlocking procedure again, and the locking can be easily performed simply by rotating the arm portion 4 in the locking direction. In other words, since the locking projection 241 of the first locking means and the locking claw 53 of the second locking means are respectively provided with tapered surfaces, the first locking means can be simply moved forward in the closing direction. The locking projection 241 of the means climbs over the inner wall surface of the arm part 4, and the locking rod 221 of the second locking means climbs over the locking claw 53 and is fixed at the locking position.

  In removing the door opening prevention device 1, first, the bases 21 and 31 are lifted up by operating the knob portions 233 and 333 of the base portions 2 and 3 attached to the door bodies D and D, respectively. Remove. As a result, only the mounting plates 23 and 33 are left on the wall surface.

  Therefore, the user presses and fixes the mounting plates 23 and 33 with one hand, and then grips the knob portion T1 of the double-sided adhesive tape T exposed from the lower ends of the mounting plates 23 and 33 with the other hand. Pull down. Thereby, the double-sided pressure-sensitive adhesive tape T is stretched and peeled off from the wall surface. By removing all the double-sided pressure-sensitive adhesive tapes T through the above-described series of steps, the mounting plates 22 and 33 can be easily and cleanly removed.

  In this embodiment, although the door opening prevention apparatus 1 illustrated about the case where it applies to the double door type door bodies D and D, in addition to this, you may apply to a single door body and the door stop of a sliding door May be provided. Furthermore, you may use it attaching to the drawer of a cabinet.

The perspective view which shows the use condition of the door opening prevention apparatus which concerns on one Embodiment of this invention. The perspective view 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): Bottom surface of the door opening prevention device. Figure. (A): Front view of first base portion, (b): Left side view of first base portion. The rear view of the 1st base part explaining the attachment state of an attachment plate. AA line sectional view of Drawing 3 (a). (A): The rear view which looked at the arm part from the back side, (b): The rear view which shows the state which slid the lock lever of the arm part. The perspective view which shows the state which cancelled | released the lock | rock of the door opening prevention apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door opening apparatus 2 1st base part 21 Base 22 Locking shaft 221 Locking rod 222 Expanding part 23 Mounting plate 24 Locking part 241 Locking convex part 242 Unlock button 3 2nd base part 31 Base 32 Supporting shaft 4 Arm part 42 Guide groove 5 Lock lever 51 Lever body 52 Spring member 53 Locking claw 55 Unlocking lever D Door body D1 Door contact

Claims (3)

A pair of base portions attached at symmetrical positions across the door contact of the door body, a first base portion having a locking shaft and a second base portion having a support shaft, and an arm portion spanned between the base portions. The arm portion is rotatably supported on the support shaft of the second base portion, and has a guide groove that is locked to the locking shaft of the first base portion, In the door opening prevention device in which the locking shaft is releasably held in the guide groove by a locking means.
The locking means includes a first locking means that engages with a predetermined portion of the arm portion and holds the arm portion in a non-rotatable state in a locked state in which the locking shaft is fitted in the guide groove;
Second locking means for closing the opening of the guide groove so that the locking shaft does not come off from the guide groove, and by simultaneously operating the first and second locking means, A door opening prevention device characterized in that the locked state is released.   In the first base portion, as the first locking means, a first locking claw that protrudes and protrudes toward a locking surface formed on the inner side of the arm portion, and the first locking claw is always provided on the arm. 2. The door opening prevention device according to claim 1, further comprising: a first spring means that protrudes toward the portion, and a lock release button that separates the first locking claw from the arm portion. In the arm portion, as the second lock means, a lock lever having a second locking claw that protrudes and protrudes toward the guide groove, and the second locking claw is always placed in the guide groove via the lock lever. 3. The door opening prevention device according to claim 1, further comprising: a second spring means that protrudes toward the door, and a lock release lever connected to the lock lever. 4.

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