JPS5821900Y2 - Folding door closing device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for keeping a folding door closed so that it does not open unexpectedly.
, 1 are foldably connected with a hinge 2, one end of the folding door 6 is pivotally supported between the upper and lower rails 3 and 4, and the other end is attached to the upper and lower rails 3 and 4. A latch body 5 protruding from the upper end surface of the hinge 2 that connects the left and right door panels 1, 1 so as to be freely foldable is provided with a spring bias. This relates to a closing/holding device for a folding door, which is made up of a movable latch roller 32 that can be freely engaged with an upper rail 3.

Conventionally, in the above-mentioned folding door, the latch body 5 for keeping the folding door in a closed state is provided on the movable side of the left and right door panels la and lb, as shown in FIG. .

By providing the latch body 5 on the movable side in this way, it is possible to suppress the accidental opening of the movable side that is likely to be opened.

However, for ease of use, the fixed side and movable side may be reversed as shown in Figure 1. In such cases, the latch body 5 will be attached to the fixed side, and the movable side will be attached. This weakens the ability to hold onto objects, making them easier to open unexpectedly.

Moreover, when the fixed side and the movable side are changed in this way, the operating force for opening and closing the folding door will be different from that without changing.

The present invention was developed in view of the above circumstances, and its first purpose is to change the usability of the left and right sides by providing a latch body on the hinge that connects the two door panels in a foldable manner. The second purpose is to make the operating force almost equal even when
By operating the latch body almost at the center of the folding door to maintain the closed state, the latch body can be attached to the movable side for ease of use, compared to the conventional method where the latch body is offset from the center. The holding force in the closed state can be made stronger compared to the case where the latch body is attached to the fixed side due to ease of use. To provide a closing and holding device for a folding door that can strengthen the holding force of the folding door in the closed state as a whole by finding that the function of holding the closed state is not hindered even if the function is weakened to this extent. It is in.

Embodiments of the present invention will be described in detail below with reference to illustrative drawings.

As shown in Figures 2 and 3, two door panels 1, 1
are foldably connected with a hinge 2 to form a folding door 6.

Runner shafts 7 are installed at the top and bottom of each end of the left and right door panels 1, 1.
, 7 are provided to protrude vertically, and a runner 8 is provided horizontally rotatably on a runner shaft 7 above the end of the left door panel 1 in FIG.

Upper and lower rails 3.4 are installed on the left and right vertical frames 9,9.

The runner shafts 7 and runners 8 at the respective ends of the left and right door panels 1, 1 are inserted into the upper and lower rails 3, 4.

Then, stoppers 10 and 10 are attached to the upper and lower rails 3 and 4 near the vertical frame 9 on the right side in FIG. It is rotatably supported by upper and lower runner shafts 7.7 inserted into the rail grooves 3.4.

However, as shown in Fig. 3, only the upper and lower runners 8 and the runner shaft 7 on the left side run along the upper and lower rails 3 and 4, and the runner shafts 7 and 7 on the right side serve as the rotation axis. As the left runner 8 and runner shaft 7 travel, the hinge 2 portion of the folding door 6 projects outward from the upper and lower rails 3 and 4, and both door panels 1 and 1 are folded and opened.

As shown in FIG. 4, the two door panels 1, 1 are assembled by fitting the shaft protrusions 12 at the ends of the door panel 1 into the pair of shaft holes 11 of the hinge 2, which has a semicircular cross section and is hollow. are foldably connected with hinge 2.

A latch body 5 is attached above the hinge 2, as shown in FIG.

That is, the peripheral wall 15 is provided standing up on the bottom surface 14 which is larger than the outer shape of the hinge 2 in plan view, and this bottom surface 1
A hole 16 for inserting the latch body 5 into the hole 4, and holes 18, 18 for screws 17°17 for attaching the cap on the left and right sides of this hole 16.
A cylindrical body 19 is integrally formed on the back surface of the bottom surface 14 in communication with the hole 16 of the bottom surface 14, a bottom portion 20 is provided on the cylindrical body 19, and a threaded hole 21 is provided in the bottom portion 20, and a peripheral wall 15 is provided.
The inner surface of the cap body 24 is provided with slopes 22 and locking step portions 23 at three locations as shown in FIG. 4 to form a cap body 24.

A hole 26 for inserting the latch body 5 into a presser plate 25 having a shape that roughly follows the inner peripheral surface of the peripheral wall 15 of the cap body 24.
and an insertion hole 27 for the cap mounting screw 17.
．． 27, and locking protrusions 28 are provided at three locations.

The cylindrical body 19 of the cap body 24 is then inserted into the arcuate support portion 29 formed on the hinge 2, and the locking protrusion 28 of the presser plate 25 is locked to the locking step portion 23 of the cap body 24. Attach the presser plate 25 to the plate, then pass the screw 17°17 for attaching the cap through the insertion hole 27°18 of the presser plate 25 and the cap body 24, and insert the screw 17 into the tapping hole 30, which is the shape of the hinge 2. This is how the cap body 24 is attached to the hinge 2.

A pair of latch rollers 32 , 32 are provided on both sides of the base portion 31 .
It is installed so that it can be rotated horizontally.

A rod-shaped presser portion 3 that presses the coil spring 33 on the base portion 31
4 is hung downward, and this presser part 34 and the base part 3
The latch body 5 is formed by providing a hole 35 passing through the latch 1 vertically.

Therefore, the coil spring 33 is attached to the cylindrical body 19 of the cap body 24.
the rod-shaped holding part 34 of the latch body 5 from above.
After that, insert the long screw 36 for adjustment into the hole 35 of the latch body 5, screw this long screw 36 into the threaded hole 21 of the bottom 20 of the cylindrical body 19 of the cap body 24, and then tighten the latch body 5. is fixed to the hinge 2 and attached to the cap body 24.

That is, a latch body 5 protruding over a certain range from the upper end surface of the hinge 2 which connects the left and right door panels 1, 1 in a foldable manner is biased by a spring.

Therefore, when the folding door 6 is extended, one of the latch rollers 32 first comes into contact with the lower side of the upper rail 3, and the latch body 5 rotates within the cylindrical body 19.
The latch rollers 32.degree. 32 on both sides of the latch body 5 come into contact with the upper rail 3, respectively.

From this state, both latch rollers 32, 32 roll from the side surface of the upper rail 3 to its lower surface, and as a result, the latch body 5 moves downward against the coil spring 33, and the coil spring 33 is restored. The latch roller 32 is locked to the upper rail 3 by the force.

In this way, the folding door 6 can be kept closed by locking the latch roller 32 to the upper rail 3.

When the folding door 6 is folded again from this state, the latch body 5 moves downward while the latch roller j2 rolls, and the upper rail 3
The latch roller 32 will be unlocked.

By screwing the long screw 36 into the threaded hole 21 deeply or shallowly, the height of the protrusion of the latch body 5 from the upper end of the door panel 1 is changed, and the amount of compression of the coil spring 33 that springs the latch body 5 is changed. can be changed.

Therefore, the force with which the latch roller 32 tries to partially enter the upper rail 3 can be changed and adjusted, thereby making it possible to change and adjust the force for opening and closing the folding door.

As mentioned above, in this invention, the latch body is provided on the hinge that connects two door panels so that they can be folded together, so it is easy to open a so-called folding door that is constructed by connecting two door panels that can be folded together. The operating force can be made almost the same whether it is done from the left or right side, so even if the movable side and the fixed side are changed depending on the usability, the operating force will not become heavier or lighter. It can be stabilized as a product.

Furthermore, by providing the latch body on the hinge, the folding door can be maintained in the closed state in the central part.

Therefore, compared to conventional methods in which the latch body is installed at a location displaced from the center of the folding door, the latch body is attached to the movable side for ease of use, whereas the method of the present invention maintains the closed state. It can make you stronger.

Also, for ease of use, the latch body is attached to the fixed side, which makes the holding force in the closed state a little weaker than in the conventional case, but this weakening does not affect the holding function in the closed state and the overall As a result, the latch body can now hold the folding door in a closed state more strongly.

Moreover, since the rotatable latch roller attached to the latch body, which is biased upward by a spring, can freely engage the upper rail, the latch roller smoothly rolls on the lower surface of the upper rail when the folding door is closed. However, when the folding door is pushed open (or pulled open), the latch roller is smoothly pulled out from the upper rail. The folding door can be opened without the need to release the latch, making it easy to use.

[Brief explanation of the drawing]

Fig. 1 A9 is a schematic plan view showing a conventional example, Fig. 2 is a perspective view of a folding door equipped with the folding door closure holding device of the present invention, Fig. 3 is a schematic front view of the same, and Fig. 4 5 is an exploded perspective view of the same closure holding device as above, and FIG. 5 is a schematic plan view of the folding door, where 1 is a door panel, 2 is a hinge, 3 is an upper rail, and 4 is a schematic plan view of a folding door.
5 is a lower rail, 5 is a latch body, and 32 is a latch roller.

Claims (1)

[Scope of utility model registration request] One end of the folding door, which is formed by connecting two door panels that can be folded together with a hinge, is pivotally supported between the upper and lower rails, while the other end can freely run along the upper and lower rails. The latch body protruding from the upper end surface is attached to the hinge that connects the left and right door panels so that they can be folded and is biased by a spring, and the rotatable latch rollers attached to both sides of the latch body are engaged with the upper rail. Folding door closing device that can be opened freely.