JP2565623Y2 - Door safety pivot structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety pivot structure of a door, and more particularly, for example, covers a front surface of an assembly storage furniture or other storage portion which is firmly integrated with a building frame and installed. The present invention relates to a safe pivot structure that prevents accidental removal of a folding door.

[0002]

2. Description of the Related Art Hitherto, as for a pivotal structure of a folding door on the front of mounted and stored furniture, a structure as disclosed in Japanese Utility Model Publication No. 63-45484, which has been proposed by the present applicant, has been known. .

This will be described first with reference to FIGS. 4 and 5 as follows.

FIG. 4 shows the entirety of an assembling and storing furniture having a pair of left and right folding doors mounted on the front. The storage unit main body (1) is formed in a box shape with an open front surface, and a door frame (2) assembled in a correspondingly large square shape is applied to the front opening edge thereof. At the front side of the lower frame, a channel-type rail (3) made of an extruded aluminum material or the like is provided fixed to a floor or the like. On the other hand, the front folding door (4) is constructed in the form of a two-folded door which can be bent by connecting the ends of a pair of door panels pivotally.
An upper pivot (5) is attached to the upper end of one side edge on the rotation base end side, and is fitted into a shaft hole (6a) of an upper pivot receiver (6) attached to an upper frame of the door frame (2). A lower pivot (7) is attached to the lower end of the lower pivot (7) so as to protrude downward, and the lower pivot (7) is fixed to one end of the rail (3). It is embedded and pivoted. A runner (9) is attached to the lower surface of the other side edge of the door (4) so as to protrude downward, and is slidably supported on the rail (3). Therefore, as shown in FIG.
By rotating around (7), it can be opened in two folded states.

The upper pivot (5) is vertically movably held by a holding cylinder (10) embedded in the door (4), and is constantly urged upward by a spring built in the holding cylinder. It can be made to retreat downward against this spring force. Therefore, when assembling the door (4), the upper pivot (5) is first fitted into the upper pivot receiver (6), and then the door (4) is slightly lifted to move the lower pivot (7) to the rail (3). The door (4) can be easily assembled by moving over the upper part and dropping it into the bearing recess (8a) of the lower pivot receiver (8).

On the other hand, the lower pivot (7) has an upper male screw portion (7a) screwed into a female screw tube (11) embedded in the door (4) as shown in FIG. By rotating using the provided polygonal height adjusting flange (12), the height, that is, the degree of downward projection of the lower pivot (7) can be adjusted. (11a) is a mounting sleeve plate provided integrally with the female screw cylinder (11),
It is fixed to the lower surface of the door with screws or the like.

The lower pivot receiver (8) is made of a metal plate piece having lower bent portions (8b) (8b) at both ends, and is provided on both upper sides of the groove (13) of the rail (3). Is placed on the convex edge (3a) (3a), and one end of the groove (1a)
3) It is to be fixed to the rail (3) by a fixing bolt (15) screwed toward the nut piece (14) fitted therein.

Further, in the above configuration, when an upward external force acts on the door (4) for some reason, that is, a person or an object comes in from the outside, or the door (4) is lifted upward by violent opening / closing operation. Involuntarily lower pivot (7)
Is removed from the recess (8a) of the pivot receiver (8) and the door (4) may come off, so the lower pivot (7)
A hook-shaped locking plate (26) for preventing excessive upward movement of the head is added. Conventionally, this locking plate (26)
As shown in FIGS. 4 and 5, one end thereof is detachably fixed to the rail (3) integrally with the lower pivot receiver (8) using the fixing bolt (15) on the lower pivot receiver (8). At the same time, a part of the lower pivot (7) is fitted into the hook-shaped notch (27) provided at the other end at a position slightly above the height adjusting flange (12). I have. Therefore, the lower pivot (7) is connected to the locking plate (2) of the flange (12).
The upward movement is prevented by the locking action of 6).

[0009]

However, in the conventional means for preventing detachment by the hook-shaped locking plate (26),
Further, the following problems were derived.

That is, when the locking plate (26) is attached, the fixing bolt (15) is loosened in advance and the locking plate (2) is loosened.
The pivot (7) is fitted to the pivot receiver (8) with the 6) released to the non-operating position, and thereafter, the locking plate (26) is rotated to the operating position to connect the pivot (7) to the pivot (7). It is to be locked and tightened by bolts (15).
However, when the bolt (15) is tightened, the locking plate (26) may follow and rotate and come off the pivot (7). To avoid this, conventionally, the locking plate (26) is locked as shown in FIG. Two types of plates (26) are prepared for the right and left, and the hook-shaped notch (27) is pivoted (7) by rotating the bolt (15) in the tightening direction, that is, clockwise. To be engaged.

However, the left locking plate (26) shown in FIG.
In the case of, the latch (26) can be hung on the pivot (7) simply by pushing the locking plate (26) from the front side of the door (4). Is the door (4)
The locking plate (26) released to the back side of the vehicle must be rotated forward and engaged with the pivot (7), and this operation has been extremely difficult in practice. That is, the above operation is performed from a place where a hand cannot be reached behind the door (4).
It must be performed from the front side using a slight gap (C) of about 10 mm between the door (4) and the rail (3),
It was very difficult to pivot the locking plate (26) forward and hang it on the pivot (7) because no finger could enter.

The purpose of the present invention is to solve such a problem.

[0013]

Therefore, the present invention achieves the above object by changing the locking plate from the rotary engagement type to the slide engagement type. .

That is, in the present invention, the lower pivot (7) protrudingly attached to the lower surface of the door (4) on the base end side of rotation is provided with the lower pivot receiver (8) fixed to the rail (3) or the like. The door (4) is rotatably pivotally supported by being fitted into the concave portion (8a) of the lower pivot (8), and the locking plate (1) on the lower pivot receiver (8) for preventing the lower pivot (7) from moving upward.
In the safety pivot structure of the door to which 6) is fixed, one end of the locking plate (16) is formed as a mounting portion (16a) having a mounting slot (18) in the length direction, The other end is formed as a bifurcated branching locking portion (16b) having a U-shaped notch (17) directed inward from the tip, and the mounting portion (16a) is fixed through a long hole (18). The lower pivot (7) is slidably fitted into the U-shaped notch (17) of the locking portion (16b) while being fixed to the pivot receiver (8) by a bolt (15). The gist is a safety pivot structure of a door characterized by the above.

[0015]

1 to 3 show an embodiment of the present invention.

As shown in these figures, in the present invention, a locking plate (16) made of a strip-shaped metal plate piece bent stepwise in the longitudinal direction is provided at the mounting portion (16a) at one end. And a forked bifurcated portion having a U-shaped notch (17) inwardly from the tip end, and a locking portion (16b) at the other end. Is formed on

The mounting portion (16a) has a long hole (1).
The lower pivot (7) is fixed to the lower pivot receiver (8) by the fixing bolt (15) through the fixing bolt (15) and the lower pivot (7) is formed in the U-shaped notch (17) of the locking portion (16b). Is slidably fitted at a slightly upper position. Therefore, the lower pivot (7) is prevented from moving upward by the locking action of the locking plate (16) of the flange (12).

The other structure is the same as the conventional door pivot structure described above with reference to FIGS. Therefore, the same reference numerals are given to the corresponding parts, and the description is omitted.

Instead of the flange (12), a notch groove is formed in a part of the pivot (7), and the notch (17) of the locking plate (16) is fitted into this notch. Thus, the relative upward movement of the lower pivot (7) may be prevented.

In the above configuration according to the present invention, when the door (4) is mounted, the fixing bolt (15) is once loosened and the locking plate (16) is moved in the retreating direction as shown by a chain line in FIG. Leave it in the recess (8a) in the lower pivot (7)
After the fitting, the locking plate (16) is advanced to a predetermined engagement position, the lower pivot (7) is fitted into the notch (17), and tightened by a fixing bolt (15). is there.

[0021]

According to the present invention, the lower pivot (7) is recessed (8a) by accidental upward movement of the door (4).
It is possible to reliably prevent the door from coming off from the door and to secure the safety, and also to secure the locking plate (16) for securing the safety from the front side of the door (4). It can be done easily by work. That is, as described above, the locking plate (16) is slid in the longitudinal direction using the mounting long hole (18) and the U-shaped notch (17) of the locking portion (16b) branched into two branches. By moving it, it can be switched between a non-working position and a working position. Therefore,
Even if there is only a small gap under the door (4),
The above movement of the locking plate can be easily performed from the outside of the door, and the locking plate (16) is prevented from rotating by the lower pivot (7) in the operation position. There is no danger that the stop plate (16) will come off the pivot (7), and it can be easily fixed and workability is good. The locking plate (16) can be used in common with the same configuration without distinguishing between the right and left locking plates, which is advantageous in manufacturing and mounting work.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is a perspective view of a locking plate used in the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is an overall perspective view of storage furniture to which a conventional door pivot structure is applied.

FIG. 5 is a sectional view of a lower pivot portion in a conventional door pivot structure.

FIG. 6 is an explanatory view of a conventional operation state of attaching a locking plate.

[Explanation of symbols]

 (3) ... rail (4) ... door (5) ... upper pivot (6) ... upper pivot receiver (7) ... lower pivot receiver (8) ... lower pivot receiver (8a) ... recess (12) ... height adjustment flange Part (15) Fixing bolt (16) Locking plate (17) U-shaped notch (18) Mounting long hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A lower pivot (7) protrudingly mounted on the lower surface of the door (4) on the rotation base end side thereof has a concave portion (8a) of a lower pivot receiver (8) fixed to a rail (3) or the like. ), The door (4) is rotatably pivotally supported,
And a safety pivot structure for a door in which a locking plate (16) for preventing the lower pivot (7) from moving upward is fixed on the lower pivot receiver (8). One end of the locking plate (16) Is formed into a mounting portion (16a) having a mounting hole (18) in the length direction, while the other end has a U-shaped notch (17) directed inward from the tip. The mounting portion (16b) is fixed to the pivot receiver (8) by a fixing bolt (15) through a long hole (18), and the mounting portion (16b) is formed. The lower pivot (7) is slidably fitted in the U-shaped cutout (17) of (1).