JPS5923193Y2 - Folding door closing device - Google Patents

Description

[Detailed description of the invention] The invention is based on a folding door 2 formed by connecting two door panels 1, 1 so as to be foldable. The door panel 1
A pair of latch rollers 5 rotatable in a direction perpendicular to the plane of the
is pivotally supported on both sides of the upper end of the latch body 6, and the latch body 6 can be moved vertically and rotated horizontally by a vertical axis 34 in a latch mounting recess 32 that opens at the upper end surface near the center of the folding door 2. The latch body 6 is freely pivoted, and the central part of the front and rear side surfaces of the door panel 1 of the latch body 6 is brought into line contact with the front and back inner surfaces of the latch mounting recess 32 at vertical contact protrusions 40° and 40, The latch body 6 is urged upward by the spring 7, and the latch roller 5 is moved upwardly to the upper rail 3 by the vertical movement of the latch body 6.
This invention relates to a closing/holding device for a folding door that can be locked and detached from the lower opening 8 of the folding door.

Conventionally, when closing a two-fold folding door by extending it between the upper and lower rails, a latch 41 is attached to the upper end surface of the central part of the folding door so as to be movable up and down in order to maintain the closed state of the folding door. This latch 41 when the folding door 2 is closed
However, since the latch 41 starts to come into contact with the upper rail 3 when the door panel 1 is at a slight angle with the upper rail 3, the latch 41 is fixed to the lower surface of the upper rail 3 as shown in Fig. 12. One latch roller 5 first locks on the upper rail 3, and then the other latch roller 5 locks on the upper rail 3, and the latch 41 cannot smoothly lock on the upper rail 3. Ta.

The present invention has been developed in view of the above-mentioned points, and an object of the present invention is to provide a closing/holding device for a folding door that can smoothly lock the folding door to the upper rail for keeping the door closed. It is something to do.

The present invention will be explained in detail below with reference to Examples.

The door panel 1 is formed by attaching a panel plate 10 between four hollow door frames 9, and includes a hinge 1 having a semicircular cross section.
By fitting the shaft protrusions 13 at the ends of the door panel 1 into the pair of shaft holes 12 of the door panel 1, the two door panels 1, 1 are foldably connected with the hinge tool 11 as shown in FIG. 4, thereby creating a folding door. form 2.

Inside the door frame 9 of the door panel 1, corner blocks 14.15 are attached to screws 18 as shown in FIG. However, pivots 21 and 22 are attached to the bottom surface of both ends of the folding door 2, respectively.

Reference numeral 23 denotes a rib protruding from the outer surface of the corner blocks 14, 15, which prevents the corner blocks 14, 15 from shaking inside the door frame 9.

The runner 19°20 is attached to the runner shaft 24 and the runner main body 2
5 is mounted horizontally rotatably, and runner rollers 26 are pivotally supported on both left and right ends of the runner main body 25, and the pivots 21 and 22 are biased downward by springs 27.

The upper rail 3 and the lower rail 4 each have a pair of vertical frames 28.
It is constructed between the upper and lower ends of 28.

Running guide pieces 29 and 29 for running the runner 19°20 are extended on the lower surface of the upper rail 3.
An opening 8 is formed between 9 and 29, and a rail groove 30 that opens upward is recessed in the lower rail 4.

Reference numeral 6 denotes a square cylindrical latch body, and as shown in FIG. 6, shaft portions 31 are protruded from the left and right sides of its upper end, and latch rollers 5 are attached to each of the shaft portions 31.

This latch body 6 is connected to the corner block 1 as shown in FIG.
The hinge of the folding door 2 is formed by inserting the lower part of the shaft 34 into the latch mounting recess 32 having a rectangular planar cross section and screwing the lower part of the shaft 34 inserted into the shaft through hole 33 of the latch body 6 into the corner block 14. It is attached to the upper end surface near the tool 11.

The latch body 6 is movable up and down along a shaft 34, and a spring 7 is interposed between the bottom surface of the latch body 6 and the bottom surface of the latch mounting recess 32. The upper part of the folding door 5 projects upward from the upper end surface of the folding door 2.

In addition, vertically long contact protrusions 40 and 40 are provided on the inner surfaces of the front and back sides of the latch mounting recess 32, and contact ridges 40 and 40 are provided on both sides of the latch body 6 installed in the latch mounting recess 32. The tips of the protrusions 40 are in line contact.

Therefore, the latch body 6 is prevented from swinging in the front and back directions of the door panel 1 as indicated by the arrow A in FIG. 7 by the contact protrusion 40;
The side surface of the latch body 6 is centered on the shaft 34 and the contact protrusion 40
A slight horizontal rotation will be made to slide into.

As shown in FIG. 3, the upper part of one runner is delivered into the upper rail 3, the running guide part 45 at the lower part of the runner main body 25 is positioned in the opening 8, and the pivot 21 is moved against the spring 27. The pivot 21 is retracted into the door frame 9 of the panel 1 and placed in the rail groove of the lower rail 4 by the return force of the spring 27.
The folding door 2 is attached between the upper and lower rails 3 and 4 by inserting it into the rail groove 30 of the lower rail 4.

Also, as shown in Figure 2, the runner 19 and pivot 21 on the right side
Stopper 35.3 on upper rail 3 and lower rail 4 in the vicinity
6 is attached with bolts 37, and the right runner 19 and pivot 21 are prevented from running along the upper rail 3 and lower rail 4.

Therefore, only the left runner 20 and pivot 22 run along the upper and lower rails 3 and 4, and the runner shaft 24 and pivot 21 of the right runner 19 serve as rotation axes, and the left runner 20 and pivot 22 runs, the folding door 2 has its hinge 11 part on the upper and lower rails 3,
Both door panels 1, 1 are folded so as to protrude outward from 4,
It will be opened.

Also, in the opposite direction to the above, the left runner 20 and pivot 2
2 to extend the folding door 2, one of the latch rollers 5 comes into contact with the lower side of the upper rail 3, and the latch body 6 rotates around the shaft 34, as shown in FIG. The latch rollers 5°5 on both sides come into contact with the upper rail 3, respectively.

From this state, both latch rollers 5, 5 roll from the side surface of the upper rail 3 to the lower surface of the traveling guide piece 29 as shown in FIG. At the same time, the latch roller 5 is locked in the opening 8 of the upper rail 3 by the return force of the spring 7.

In this way, the closing of the folding door 2 is maintained by the latch roller 5 being locked to the upper rail 3, and furthermore, the central part of the folding door 2 springs back from the upper and lower rails 3 and 4 due to the impact when closing. This is to prevent

When the folding door 2 is folded again from this state, the latch body 6 moves downward while the latch roller 5 rolls, and the latch roller 5 is disengaged from the opening 8 of the upper rail 3.

In the above embodiment, the contact protrusion 40 is formed by protruding from the inner surface of the latch mounting recess 32, but the contact protrusion 40 is protruded from the side surface of the latch body 6 as shown in FIGS. The latch body 6 may be brought into line contact with the inner surface of the latch attachment recess 32, which is a flat surface, and further, as shown in FIG. The latch main body 6 and the respective contact protrusions 40 of the latch mounting recess 32 may be brought into line contact.

As mentioned above, in the present invention, the latch roller at the upper end of the latch body, which is movably arranged on the upper end surface near the center of the folding door, is locked to the lower opening of the upper rail by the vertical movement of the latch body. Since it is releasable, when the folding door is extended, by locking the latch roller of the latch body into the opening of the upper rail, the central part of the folding door can be held on the upper rail and the folding door can be kept closed. Not only can this prevent the folding door from rebounding from the upper rail due to impact when it is closed, but the latch body is supported by a vertical axis in the latch mounting recess, so the latch body can be easily moved in the horizontal direction. When the folding door is closed by rotation, the latch body is rotated so that it is parallel to the upper rail, and the latch rollers on both sides of the latch body are brought into contact with the side surfaces of the upper rail, and both latch rollers can be simultaneously locked to the opening on the lower surface of the upper rail. The latch roller can be smoothly locked to the upper rail, and the center part of the front and back side surfaces of the door panel of the latch body and the inner surface of the front and back side of the latch mounting recess. Since the latch body is in line contact with the vertical contact ridges, even though the latch body is pivoted on the vertical axis and can be rotated horizontally, the latch body does not close to the door due to the contact with the contact ridges. There is no risk of the panel swinging from front to back, and there is no risk of the folding door rattling when the folding door is closed and the latch roller is locked to the lower rail. Since the recess is a line contact using a contact protrusion, the rotation of the latch body is not impaired in any way.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the present invention-embodiment, Fig. 2 is a partially cutaway front view of the same, Fig. 3 is a side sectional view of the same, Fig. 4 is a top sectional view of the same, Fig. 5a, l), c are a partially cutaway top view, a partially cutaway front sectional view, a plan sectional view, and Fig. 6a.
, b is a front cross-sectional view and top view of the latch body and latch roller as above, FIG. 7 is a partially cutaway top view of the corner block, FIG. 8 is a schematic top view explaining the action of the above, and FIG. 9 is a top view. 10A and 10L are top views of the latch body and latch rollers of another embodiment of the present invention, a partially cutaway top view of the corner block, and FIG. 11 is a still further example. Partially cutaway top view of the corner block of the embodiment, No. 12
The figure is a schematic top view showing the operation of a conventional example, in which 1 is a door panel, 2 is a folding door, 3 is an upper rail, 4 is a lower rail,
5 is the latch roller, 6 is the latch body, 7 is the spring, 8
32 is an opening, 32 is a latch mounting recess, 34 is a shaft, and 40 is a contact protrusion.

Claims (1)

[Scope of utility model registration request] One end of a folding door formed by connecting two door panels so that it can be folded is pivotally supported between the top and bottom rails, and the other end is attached so that it can run freely along the top and bottom rails. , a pair of latch rollers rotatable in a direction perpendicular to the surface direction of the door panel are pivotally supported on both sides of the upper end of the latch body,
The latch body is supported by a vertical shaft in the latch mounting recess that opens on the upper end surface near the center of the folding door so that it can move vertically and freely rotate horizontally. The central part of the latch is brought into line contact with the inner surfaces of the front and back sides of the latch mounting recess through vertical contact protrusions, and the latch body is urged upward by the spring, and the latch roller is moved by the vertical movement of the latch body. A closing/holding device for a folding door that can be freely locked and removed within the lower opening of the upper rail.