JP5999656B2 - French drop - Google Patents

Description

  The present invention relates to, for example, a French drop that fixes a child door in a parent-child door of an open door, and in particular, a recess provided on a floor surface when the vertical stroke of the drop bar is set large and the gap between the door and the floor surface is not constant The present invention relates to a French drop that is easy to assemble and does not easily float due to vibration or impact when the drop bar to be inserted is stopped after being inserted.

  Conventionally, in this type of French drop, there is a type in which a drop rod is moved up and down by rotating a knob lever by inserting a shaft between the drop lever and the drop rod.

  In addition, a leaf spring provided with a convex portion for a slider provided with a plurality of drop bars and concave portions is welded to the base body so that the convex portion of the leaf spring and the concave portion of the slurder can be locked so that they can be held during ascent In addition, there is one in which the stroke is set large so that it can be locked in three or more stages (see Patent Document 1: Japanese Patent Laid-Open No. 20005-188117).

Furthermore, a pinch member is provided on the outside across the vertical partition wall, a drop bar is provided on the inside, and a magnet is fitted and bonded to a holder having a U-shaped cross section on the side adjacent to each other. There is one in which the drop bar can be moved up and down in the vertical fence by raising and lowering the knob while wearing (see Patent Document 1: Japanese Patent Laid-Open No. 9-317364).

JP 20005-188117 A JP 9-317364 A

However, the conventional configuration has the following problems.
Since the rod lever is moved up and down by rotating the rod lever through the shaft between the knob lever and the drop bar, it can only be operated with a certain stroke, so if the gap with the floor is large, it will reach the recess. In some cases, the insertion cost may be reduced.
In addition, when the insertion depth becomes insufficient due to the entry of dust or the like into the recess, the knob lever does not fit in the predetermined position and protrudes from the door, and the main door may not be closed.

Therefore, in Patent Document 1, a convex portion is provided on the leaf spring and three or more locking concave portions are provided on the slider so that the case where the gap with the floor is large can be accommodated. Depending on the interval at which the door is provided, it cannot be sufficiently inserted into the recessed portion provided on the floor surface. In some cases, the dropping bar jumps up and enters the upper locking portion, and the engagement with the concave portion of the floor surface becomes shallow and becomes unstable in the inserted state.
Further, it is not easy in assembly such as welding a leaf spring.

Furthermore, in Patent Document 2, magnets are arranged on the dropping bar and the knob side with the partition wall of the rod frame interposed therebetween, and when the knob is lowered, the dropping bar is inserted into the recess on the floor surface and stopped. Nevertheless, only the knob can be lowered, so if you take your hand off the magnetic field, the knob held by the magnet will fall to the lower edge of the downspout. There is a problem in operability. The same applies to the case where the dropping bar is not inserted into the recess but is stopped at the edge of the recess or on the floor surface.
In the unlocked state, even if the magnetic force is strong, if a vibration or impact is applied, there is a possibility that it gradually falls due to its own weight.

  The present invention has been made based on such points, and the object of the present invention is that the clearance between the lower end surface of the door and the floor surface is not constant, and stable holding is possible even when the slider is at a stop position on the way. It is to provide a French drop that has and is easy to assemble.

In order to solve the above problem, the French drop described in claim 1 is provided with a slider supported so as to be movable up and down within a predetermined range with respect to the main body, a rod bar is provided at the lower end of the slider, and the rod bar In the French dropping device that fixes the door by engaging the lower end with the recess formed on the floor surface, the groove is provided on the back of the main body and the slider is stored via the guide, and the recess is provided on the back side of the slider magnet is accommodated, is disposed the iron back plate having magnetism with disposing of low wear resin sheet to the rear panel, guide and low wear resin sheet and the back plate to the rear panel is secured screws it is characterized in that there.

  Further, in the French drop according to claim 1, the back plate is provided with a locking portion adjacent to the magnet and on the locking side when the slider is in the storage position where the slider is unlocked. It is.

  Further, in the French drop according to claim 1 and claim 2, the magnet is a neodymium magnet.

  As described above, according to the French drop according to claim 1, since the magnet housed in the slider slides in a state of being magnetically attached to the back plate via the resin sheet, the operability of lifting and lowering is not hindered. Even in the state, a stable holding state can be obtained even if vibration or impact is applied. Further, since the slider, guide, and magnet are housed in the main body and then the resin sheet and the back plate are screwed together with the guide to the main body, the assembly is easy without requiring any special tools or labor.

According to the second aspect of the present invention, since the back plate is adjacent to the magnet in the unlocked state and has a locking portion on the side to be locked, there is no possibility of dropping due to its own weight even if a vibration or impact is applied.

 Further, according to the third aspect, since the magnet is a neodymium magnet, it is possible to hold the rod rod stronger than the ferrite magnet in the locked and unlocked state.

It is a figure which shows the door which attached the French drop of this invention. It is a figure which shows one embodiment of this invention, and is the expansion | deployment perspective view seen from the back side of the French drop. It is a figure which shows one embodiment of this invention, and is an expansion | deployment perspective view which shows the state which accommodated the slider seeing from the back side of the French drop. It is a figure which shows one embodiment of this invention, and is a principal part expanded sectional view of a French drop. It is a figure which shows one embodiment of this invention, and is the 5A-5A sectional view taken on the line of FIG. 4, and the 5B-5B sectional view.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a view showing a door to which a French drop according to the present embodiment is attached, and FIG. 2 is a developed perspective view seen from the back side of the French drop. FIG. 3 is an exploded perspective view showing a state in which the slider is housed when viewed from the back side of the French drop, and FIG. 5 is a sectional view taken along line 5A-5A and a sectional view taken along line 5B-5B in FIG.

In FIG. 1, a French drop 5 is provided below the side surface 2 opposite to the hinge mounting portion of the door 1 that opens and closes, and screws are inserted into holes provided in the flanges 11 and 12 in a form incorporated in the door 1. It is fixed.
On the side surface 2 side where the flanges 11 and 12 of the French drop 5 are exposed, there is provided a recess 8 in which the knob 14 can slide up and down, and a long hole 7 in which the knob 14 can slide is provided in the bottom of the recess 8. When the knob 14 provided on the slide 13 is lowered, the tip of the rod rod 18 is inserted into the recess 4 on the floor surface through the hole 3 provided on the bottom surface of the door 1.
In addition, the length of the long hole 7 that can cope with a gap BF that is twice or more the gap AF between the door 1 and the floor surface that is set normally is set to a size that can secure a stroke up to B. .

In FIG. 2, the French drop 5 includes a main body 6, a slurder 13, a magnet 19, a guide 20, a resin sheet 21, a back plate 22, and a rod bar 18.

The main body 6 is molded from aluminum or the like made of a non-magnetic material, and has concave portions 9a and 9b and a concave portion 10 that can accommodate the slider 13 on the back surface, and has a substantially U-shape in plan view. In addition, screw holes 6a, 6b, 6c, and 6d for accumulating screws a, b, c, and d from the back are provided on the top, bottom, left, and right of the back.

Flange 11, 12 for fixing is provided on the side surface 2 side of the door (hereinafter referred to as the front side of the French drop 5). A movable hole 7 is provided.

The slider 13 is made of non-magnetic aluminum or the like, and has a knob 14 on the front side, and a recess on the back side that can store the magnet 19 and does not move up, down, left, or right when stored. 15 is provided, and slide portions 13a and 13b narrower than the concave portion 15 are provided above and below. Further, a connecting portion 16 having a screw hole 17 to which the rod rod 18 can be connected is provided at the lower end of the slide portion 13b.

The guide 20 is made of a fluororesin or POM resin that has low sliding resistance and is not easily damaged or worn. The guide 20 has a substantially clog-like shape, and the tip 20c of the tooth has an inward hook shape. At both ends, holes 20a and 20b are provided at the same intervals as the screw holes 6a and 6b and the screw holes 6c and 6d of the main body 6.
In addition, since the guide 20 is made of resin, it can be easily deformed when an external force is applied. Therefore, the lower guide can be slightly expanded and easily fitted into the slide portion 13b.

The resin sheet 21 is made of a fluororesin or a POM resin that has a low sliding resistance and hardly breaks or wears like the guide 20, and has a square shape with a thickness of 0.2 mm. Holes are provided at the same intervals as the holes 6a, 6b, 6c, 6d.

The back plate 22 is made of iron, which is a magnetic material, and the resin sheet 21 has a quadrangular shape, and holes are provided at four corners at the same intervals as the screw holes 6a, 6b, 6c, 6d of the main body 6.
Further, a projecting portion 23 is provided on the upper side so as to form a step projecting to the front side of the French drop 5 at a position located at the lower end of the magnet 19 when the magnet 19 moves upward.

Next, a method for assembling the French drop 5 will be described with reference to FIGS.
In a state where the guides 20 and 20 are inserted into the slide portions 13a and 13b of the slider 13 (small assembly state in FIG. 2), the knob 14 is passed through the long hole 7 from the back side of the main body 6, and the slider 13 is recessed in the rear surface of the main body 6. 10 is stored. At this time, the slide portions 13 a and 13 b are accommodated in the recesses 9 a and 9 b, and a portion constituting the recess 15 is accommodated in the recess 10.

The holes 20a and 20b of the guides 20 and 20 are aligned with the screw holes 6a and 6b and the screw holes 6c and 6d of the main body 6, and the magnet 19 is placed in the concave portion 15 of the slider.
The resin sheet 21 and the back plate 22 are placed thereon, and the holes 21 a, 21 b, 21 c, 21 d provided in the resin sheet 21 and the holes 22 a, 22 b, 22 c, 22 d provided in the back plate 22 are screw holes 6 a in the main body 6. , 6b, 6c, 6d, and fixed with screws a, b, c, d.

Next, a detailed assembly state will be described with reference to FIGS.
As shown in FIG. 4, in the state where the slider 13 is placed at the upper end, the magnet 19 is housed in the recess 15 of the slider 13 and is magnetically attached to the back plate 22 via the resin sheet 21. The magnet 19 is only housed in the recess 15 and is housed in a movable state in the depth direction, and serves as a downward locking portion by a step formed by the projection 23.

5A is a cross-sectional view taken along the line 5A-5A in FIG. 4, and the slide portions 13a and 13b of the slider 13 are slidably positioned by a guide 20 as shown in FIG. It is fixed to the front, rear, left and right without contacting 21.

5B is a cross-sectional view taken along the line 5B-5B in FIG. 4, and when the slider 13 moves downward, the resin sheet in which the magnet 19 is deformed following the convex portion 23 as shown in FIG. 21 has to overcome the convex deformation 21e, but a gap h2 is provided so that the height h1 of the convex deformation 21e can be sufficiently moved, so that the slider 13 is not affected and a smooth movement can be ensured.

The magnet 19 (15 mm × 15 mm) uses a neodymium magnet, so that the magnet 19 has a sufficient magnetizing force to hold the rod 18 (stainless steel, straight line 8 mm, length about 27 cm, weight about 0.1 kg). It has a force of about 0.5 to 0.6 kgf to slide through the 0.2 mm resin sheet 21, but there is no problem in operating the knob 14 and the rod rod is sufficient. 18 can be held, and can be sufficiently stabilized even in the locked and unlocked state without being displaced by vibration or impact.

Further, when the slider 13 is unlocked when it is lowered from the position at the upper end, a force of about 1.5 kgf is required to go over the step 23 provided on the back plate 22 via the resin sheet 21. Even in the locked state, even when an external force such as impact or vibration is applied, the holding state can be reliably maintained without lowering.

Therefore, there is no problem in operability without feeling weight or pain when operating by hand.
In addition, the magnetizing force can also be easily changed by changing the thickness of the resin sheet to 0.1 mm or 0.3 mm.
Further, since neodymium magnets tend to generate rust, they are usually plated with nickel. However, since sliding of the neodymium magnets through the resin sheet can prevent wear of the nickel plating, there is no risk of rusting.

  The French drop configured as described above has a storage part for storing the magnet on the back side of the slider, a slidable groove on the back side of the main body to store the slider and guide, and a resin sheet on the back side of the main body. Since the back plate having magnetism is fixed to the back surface of the main body, the locked state can be stably held at any position.

Also, with the guide inserted into the slider, pass the knob from the back side of the main body through the slot and insert the slider into the space on the back of the main body, align the hole in the guide with the screw hole on the main body, and place the magnet in the concave portion of the slider. Insert.
Since the holes provided in the resin sheet and the back plate are arranged in accordance with the screw holes of the main body and fixed with screws, the assembly can be easily performed.

  The present invention relates to a French drop that enables stable locking even when the gap between the door and the floor is not constant, for example, when a slope is provided on the floor according to food hygiene standards (HACCP, etc.) It is suitable for a French drop provided in an opening in which the gap at the center of the double opening is variable.

6 Main body 14 Knob 19 Magnet 18 Rod rod 20 Guide 21 Resin sheet 22 Back plate

Claims (3)

A slider that is supported so as to move up and down within a predetermined range with respect to the main body is provided. A rod rod is provided at the lower end of the slider, and the lower end of the rod rod is engaged with a recess formed on the floor surface to fix the door. In the French dropping device
Housed through the slider guide grooves provided on the back of the body, on the back side of the slider is housed a magnet is provided a recess, the iron having a magnetic with disposing of low wear resin sheet to the rear panel back plate is disposed, France dropped, characterized in that the guide and low wear resin sheet and the back plate is secured screws to the rear panel. In the defeat of France according to claim 1,
A French drop, characterized in that a locking portion is provided on the back plate adjacent to the magnet and on the side to be locked when the slider is in the unlocked storage position. In the defeat of France according to claim 1 and claim 2,
A French drop, characterized in that the magnet is a neodymium magnet.

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