JPH019901Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a safety device for a soundproof door pulling device. Specifically, when the handle is operated, a rod inside the door protrudes from the top and bottom of the door and is attached to a receiver on the top and bottom frame of the door. In a soundproof door pulling device that is designed to engage, when the door is open, the rod is moved above the door.
This invention relates to a safety device for a soundproof door pulling device that can be made to protrude from the bottom surface to prevent a rod from colliding with a door frame.

Regarding conventional safety devices of this type,
- As shown in Publication No. 17358 and Publication of Japanese Utility Model Application No. 52-8097, a sliding arm having a pin and an actuating piece that protrudes upward from the top surface of the door is pivotally supported on the door so as to be freely slidable, and the door is opened. This sliding arm receives the engagement part of the rod and prevents the rod from protruding in the vertical direction, and when the door is closed, the pin contacts the upper frame of the door and swings the sliding arm. The rod is designed to allow the rod to protrude, so even if the door is slightly lowered during installation or use, the amount of swing of the sliding arm when the door is closed is insufficient, making it possible for the rod to protrude. I had a problem that would go away.

Therefore, the present invention aims to solve the above-mentioned problems of the conventional device and provide a safety device for a soundproof door pulling device that operates reliably even if the door is lowered to some extent. A slider with a resin roller pivotally supported at its end is movable in a substantially horizontal direction connecting the hinge side end of the door and the free end side of the door with the roller positioned on the free end side of the door. A tension spring is installed between the slider and the upper part of the free end of the door to bias the slider in the direction away from the hinge part of the door, and the upper part of the free end of the door is placed in the open state. A stopper is provided to receive the slider with the roller protruding a predetermined amount from the free end side of the door, and the amount of protrusion of the roller is such that the amount of interference between the roller and the door frame when the door is closed is smaller than the roller radius. In addition, the rod is provided with an engaging portion, and the slider is positioned within the upward trajectory of the engaging portion when the door is open, and within the upward trajectory of the engaging portion when the door is closed. It is characterized by being provided with a rod receiving part.

FIG. 1 shows a soundproof door, in which 1 is a door frame, 2 is a door hinged to the door frame 1, and is adapted to be automatically closed by a door check 3. Although this door 2 is shown as a flexible door in the drawing, it goes without saying that it may also be a frame door.
4 is a soundproof door pulling device for pulling the door 2 toward the closing side (upper side in FIG. 2) and pressing it against the packing 5 of the door frame 1; Door 2 is opened by operating the handle.
The inner upper and lower rods 7 and 8 protrude from the upper and lower ends of the door and are attached to the receivers 9a and 9b of the upper and lower door frames 1a and 1b.
When the pulling handle 6 is operated in the direction of arrow B, the rods 7 and 8 are retracted from the upper and lower ends of the door. This soundproof door pulling device 4 is assembled to a portion of the door 2 on the lock 10 side.

Reference numeral 11 denotes a safety device assembled to the upper part of the door 2 on the lock side, and is constructed as shown in FIGS. 2 and 3. In this safety device 11, 12 is the door 2
A rod guide is fixed to the upper surface of the upper plate 2a by two mounting screws 13, and a guide cylinder part 12a deep-drawn near the center of the rod guide is attached to the upper plate 2a.
This guide cylinder part 12a is fitted into the rod hole 14 of
guides the upper part of the rod 7 so that it can move up and down.
The rod guide 12 is also provided with spring hooks 12b and 12 by bending both sides of the end on the door hinge side (right side in Figs. 1 to 3) upward.
b is integrally formed. Note that the spring hooks 12b, 12b may be provided separately from the rod guide 12. Next, 15 is the upper plate 2a of the door 2.
A slider attached to the upper surface of the slider so as to be movable by a predetermined amount in a substantially horizontal direction connecting the free end of the door and the hinged end of the door, and has two guide lengths formed on the slider. The collars 17, 17, which are illustrated as stoppers fitted in the holes 16, 16, are attached to the upper plate 2.
a Attach the mounting screw 1 to the part between the rod holes 14 on the top surface.
It is attached by fixing with screws 8 and 18. A rod receiving portion 19 is formed in the middle portion of the slider 15 so as to straddle the rod guide 12 and cover the upper part of the rod hole 14, and a rod protruding hole 19a is formed in this rod receiving portion 19.
Further, at the end of the slider 15 on the door hinge side, spring hooking portions 15a, 15a facing the spring hooking portions 12b, 12b of the rod guide 12 are integrally formed. A resin roller 20 and a spacer 21 are rotatably supported on the upper surface of the tip of the slider 15 on the door free end side by a support shaft 22. Spring hook portion 15 of the slider 15
a, 15a and the spring hook part 12 of the rod guide 12
Tension springs 23, 23 are provided between the rollers 12b and 12b to urge the slider 15 in a direction in which the roller 20 moves away from the hinged end of the door 2. The collars 17, 17 as the stoppers are the guide holes 16 of the slider 15 when the door is open.
16, and the roller 20 is positioned so as to protrude by a predetermined amount from the free end side end (front end surface of the door) of the door 2. that roller 2
The protrusion amount of 0 is as shown in Figures 2 and 3.
The amount of interference between the roller 20 and the door jamb 1c of the door frame 1 during closing (the distance between the contact position of the roller 20 with the door jamb 1c and the tip position of the roller 20 in the moving direction of the slider 15) is roller 20
When the door 2 is closed, the roller 20 is set to a size smaller than the roller radius of the door jamb 1c.
As shown in FIGS. 4 and 5, the door 2 is pushed back toward the hinge portion of the door 2. In addition, the rod receiving portion 19 is shown in FIG. 2 when the door is open.
An engaging portion 7a provided on the rod 7 as shown in FIG.
(in the drawing, it is constituted by the upper end surface of the rod 7), and when the door is closed, the engaging portion 7 is located as shown in FIGS. 4 and 5.
It is formed so as to be located outside the upward trajectory of a.

With the above structure, when the door 2 is opened, the slider 15 is moved toward the free end of the door by the tension springs 23 and 23, as shown in FIGS. The stop part 19 is the rod 7
Since the engaging part 7a of the rod 7 is located within the upward trajectory of the engaging part 7a of the slider 15, even if you accidentally try to rotate the pulling handle 6 in the direction of the arrow A, the engaging part 7a of the rod 7 will not move the rod receiving part 19 of the slider 15. Rod 7 comes into contact with
does not protrude upward from the upper end of the door 2.
Further, the engaging portion 7a of the rod 7 is connected to the rod receiving portion 19.
The lower rod 8 is prevented from rotating in the direction of arrow A by engaging with the pulling handle 6.
The door 2 does not protrude downward from the lower end of the door 2.
Therefore, even if the pull handle 6 is inadvertently rotated while the door 2 is open, or even if a child rotates the pull handle 6 while playing, the upper and lower ends of the door 2 of the rods 7 and 8 Rods 7 and 8 can be prevented from protruding from the top and bottom frame 1 of the door when door 2 is closed.
Accidents of contact with parts a and 1b can be reliably prevented. Next, when door 2 is closed, Figures 4 and 5
As shown in the figure, the roller 20 engages with the inner end of the door jamb 1c, and the roller 20 rotates around the support shaft 22 and moves the slider 15 toward the door hinge. 15, the rod protruding hole 19a is located directly above the rod hole 14, that is, directly above the engaging portion 7a of the rod 7, and the rod receiving portion 19
is moved to a position outside the upward trajectory of the engaging portion 7a of the rod 7. Therefore, by rotating the pull handle 6 in the direction of arrow A, the rods 7 and 8 are moved toward the door 2.
The rods 7 and 8 can be made to protrude upward and downward from the upper and lower ends, and by bringing these rods 7 and 8 into contact with the receivers 9a and 9b, the door 2 is pressed against the packing 5 and closed airtightly. Can be done. When the door 2 is closed, the roller 20 engages with the door frame 1c and moves the slider 15 while rotating, so the slider 15 can be moved smoothly with extremely small force. Moreover, since the roller 20 is made of resin, the roller 20 will not damage the door jamb 1c even if the door jamb 1c does not have a receiving member as shown in the drawing. Further, as described above, the roller 20 engages with the upper part of the door jamb 1c of the door frame 1 to move the slider 15, but the size of the gap between the upper part of the door jamb 1c and the front end surface of the door is will hardly change even if the door 2 is lowered by a considerable amount, so even if the door 2 is lowered by a large amount than the design dimension due to installation or use of the door 2, the slider 15 will be returned to its original travel distance. The above-mentioned operation can be ensured by moving approximately the same amount as .

In addition, in the above embodiment, the rod guide 12
Since the slider 15 is attached to the upper surface of the door 2, there is an advantage that the safety device can be easily assembled and repaired in a short time, but the present invention is not limited to this. In particular, in the case of a frame door, it can be easily installed in the upper space within the lock side frame, and in this case, the locking part 7a provided in the middle of the rod is received by the rod receiving part. Just do it like this.

As described above, in the present invention, a slider is attached to the upper part of the free end of the door so as to be movable in a substantially horizontal direction, and this slider is urged toward the free end of the door by a spring to move the roller at the tip of the slider toward the door. When the door is closed, this roller engages with the door jamb and moves the slider toward the door hinge, allowing the rod to protrude in the vertical direction. Even if the door drops considerably due to installation or door use, it is possible to reduce the variation in the amount of slider movement that occurs when the door is opened and closed, thereby reliably preventing the rod from protruding while the door is being opened. When the door is closed, the rod can be reliably allowed to protrude. Therefore, the height of the door can be easily adjusted when the door is installed, the installation work of the door can be easily performed, and the door can be operated reliably over a long period of time.
In addition, even if the slider is moved in a substantially horizontal direction as described above, the slider is moved by making a roller rotatably attached to the tip of the slider come into contact with the door jamb. Therefore, the slider can be moved smoothly with a small force, and it has the advantage of being able to operate smoothly with just the force of the door check.Furthermore, since the rollers mentioned above are made of resin, there is no need to attach any roller support member to the door frame. This can prevent damage to the door jamb even if
There is an operational advantage in that the attachment of the receiving member can be omitted.
Furthermore, since the slider is attached to the upper part of the free end of the door as described above, it also has the practical effect of preventing children from pushing the slider and causing the rod to protrude.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partially cutaway front view of the soundproof door, FIG. 2 is a side view of the safety device with the door open, and FIG.
4 is a side view of the safety device with the door closed, and FIG. 5 is a plan view of FIG. 4. DESCRIPTION OF SYMBOLS 1... Door frame, 1c... Door jamb, 2... Door, 4... Soundproof door pulling device, 7, 8... Rod, 9a, 9b... Receiver, 7a... Engaging portion, 11
... Safety device, 15 ... Slider, 19 ... Rod receiving part, 20 ... Roller, 23 ... Tension spring.

Claims (1)

[Scope of utility model registration request] A rod is provided at the free end of the door hinged to the door frame, and the rod is moved up and down by a handle so that its upper end protrudes from the upper edge of the door, and when the door is closed, the rod's upper end protrudes from the upper edge of the door. In a soundproof door pulling device that engages with a holder on a door frame to pull the door toward the closing side, a slider with a resin roller pivotally supported at the end of the slider is mounted on the upper part of the free end of the door. A slider is mounted on the free end side of the door so as to be movable in a substantially horizontal direction connecting the hinge part side end of the door and the free end side end of the door, and a slider is installed between this slider and the upper part of the free end side of the door. A tension spring is installed in the upper part of the free end of the door to urge it away from the hinged end of the door, and when the door is open, a slider is moved so that the roller moves a predetermined amount away from the free end of the door. A stopper is provided to catch the roller in a protruding state, the amount of protrusion of the roller is set to a size such that the amount of interference between the roller and the door frame when the door is closed is smaller than the radius of the roller, and an engaging portion is provided on the rod. A safety device for a soundproof door pulling device, in which the slider is provided with a rod receiving part that is located within the upward trajectory of the engaging section when the door is open, and is located outside the upward trajectory of the engaging section when the door is closed. .