JPH09112154A - Seal device of door bottom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold a seal member in an adjusted state for properly bringing the seal member into contact with a floor surface in a seal device of a door bottom for making the seal member appear and disappear from the lower face of a door by opening and closing the door, resiliently bringing the seal member into contact with the floor face in a projected state, and sealing therebetween. SOLUTION: A seal support 9 having a strip resilient body 8 and a seal member 10 on the lower face of a door 3 is incorporated in a seal fitting groove 7 provided on the lower face thereof, and the center part of the resilient body 8 is connected to the seal support 9. One end of the resilient body 8 is fixed on the door 3, and a screw shaft 15 is connected to the other end. Pushing-in by contact for the inner face of a vertical frame 4 of a doorframe 1 is performed to the screw shaft 15, and an adjustment cylinder 16 downward deforming the resilient body 8 is screw-engaged. A detent piece 17 fitted to the screw shaft 15 is pushed to the adjustment cylinder 16 by a spring 18, and a projection provided on the detent piece 17 is engaged to an engagement recess part provided on the adjustment cylinder 16. The adjustment cylinder 16 is prevented from being rotated owing to impact or vibration by opening and closing of the door, and the seal member is held in a state that contact pressure for the floor surface is adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door bottom sealing device for sealing between a closed door and a floor surface.

[0002]

2. Description of the Related Art A sealing device of this type is provided with a seal fitting groove extending in the width direction of the door on the lower end surface of the door, a strip-shaped elastic body in the seal fitting groove, and a seal support body below the elastic body. , The elastic body is deformed downward when the door is closed, and the seal support is lowered by the deformation to bring the seal member on the lower surface into elastic contact with the floor surface.

Here, in order to deform the elastic body in association with the closing of the door, one end of the elastic body on the door tip side is fixed to the door, a screw shaft is attached to the other end, and the screw shaft is screwed. The engaged adjusting tube is projected outward from the end surface of the door on the hanging side, and when the door is closed, the adjusting tube is moved in the axial direction by contact with the vertical frame on the hanging side of the door frame to move the elastic body. It is designed to deform downward.

In the door bottom sealing device using the adjusting cylinder as described above, since the adjusting cylinder can be axially adjusted in position by rotating the adjusting cylinder, the contact pressure of the sealing member with respect to the floor surface can be adjusted. It has the feature.

[0005]

By the way, in the above-mentioned conventional door bottom adjusting device, the adjusting cylinder is rotated by the impact or vibration accompanying the opening and closing of the door, and the sealing member is brought into an appropriate adjustment state in which the sealing member comes into proper contact with the floor surface. There is a problem that the seal member cannot be held.

An object of the present invention is to provide a door bottom sealing device capable of reliably holding a sealing member, which holds sealing property by contact with a floor surface, in a contact pressure adjusted state.

[0007]

In order to solve the above problems, in the present invention, a seal fitting groove extending in the width direction of the door is provided in the lower portion of the door that opens and closes the doorway of the door frame, and the seal is formed. A belt-shaped elastic body in the fitting groove and a seal support body below it are incorporated, one end of the elastic body located on the door tip side of the door is fixed to the door, and a screw shaft is attached to the other end.
The elastic body is deformed downward by the action of the tip of the adjusting cylinder screw-engaged with the screw shaft being pushed in the axial direction by the contact with the inner surface of the vertical frame of the door frame, and the seal support is deformed by the deformation of the elastic body. In a door bottom sealing device in which a sealing member provided on the lower surface of a seal support is elastically brought into contact with a floor surface by moving it downward, a cylindrical detent piece is slidably attached to the screw shaft, The stopper piece is pressed against the rear end surface of the adjustment cylinder by a spring, a protrusion having a rounded tip is provided on one of the opposing surfaces of the rotation stopper piece and the adjustment cylinder, and an engaging recess is provided on the other end. It is adopted.

[0008]

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

As shown in FIG. 1, the door 3 for opening and closing the doorway 2 of the door frame 1 is rotatably supported about a hinge 5 attached to a vertical frame 4 of the door frame 1.

As shown in FIG. 3, a mold 6 is attached to the lower part of the door 3 by means of screwing.

The mold frame 6 extends long in the width direction of the door 3, and a seal fitting groove 7 extending in the longitudinal direction of the mold frame 6 is provided on the lower surface of the mold frame 6.

As shown in FIGS. 1 and 3, a band-shaped elastic body 8 and a seal support body 9 below the elastic body 8 are incorporated in the seal fitting groove 7. The seal support 9 extends in the width direction of the door 3, and a seal member 10 that is in contact with the floor is attached to the lower surface of the seal support 9.

Grooves 11 extending toward both ends are formed on the upper surface of the seal support 9, and the side seals 12 attached to both sides of the groove 11 lightly contact both sides of the inner surface of the seal fitting groove 7. The space between them is sealed.

The central portion of the elastic body 8 in the longitudinal direction is inserted into the groove 11 of the seal supporting body 9, and the connecting piece 13 fixed to the central portion of the elastic body 8 is provided with the pin 14 through the seal supporting body 9.
Is rotatably connected to.

One end of the elastic body 8 located on the door tip side of the door 3 is fixed to the form 6, and the other end is connected with a screw shaft 15 as shown in FIG. The adjusting cylinder 16 is attached to the screw shaft 15.
Is screwed in, and the tip end portion of the adjusting cylinder 16 projects outward from the side surface of the door 3 on the hanging side.

A tubular detent piece 17 and a spring 18 are fitted to the screw shaft 15, and the detent piece 17 is adjusted by the elastic force of the spring 18.
It is pressed against the rear end face.

The anti-rotation piece 17 is slidably provided on the screw shaft 15 and is anti-rotational.
In order to prevent the rotation, the rotation stopping piece 1 is used in the embodiment.
The outer periphery of 7 is polygonal, and its detent piece 17 is slidably inserted into a rectangular guide groove 19 formed in the upper part of the seal fitting groove 7.

As shown in FIG. 4, a plurality of protrusions 20 each having a rounded tip are provided on the tip end surface of the anti-rotation piece 17, while the protrusions 20 are engageable with the rear end surface of the adjusting cylinder 16. An engagement recess 21 is provided, and the inner surface of the engagement recess 21 is an arc surface.

2 and 4 show a closed state in which the door 3 closes the doorway 2, and the adjusting cylinder 16 is pushed in the axial direction by abutting against the inner surface of the vertical frame 4 on the suspension side of the door frame 1. .

As shown in FIG. 1, the central portion of the elastic body 8 is deformed downward by pushing in the adjusting cylinder 16, the seal support 9 is lowered by the deformation, and the seal member 10 on the lower surface is deformed.
Elastically contacts the floor surface to seal between the door 3 and the floor surface.

When the door 3 is opened, the adjusting cylinder 16 is separated from the inner surface of the vertical frame 4, so that the pushing is released and the elastic body 8 returns to a flat natural state due to the restoring elasticity at the time of deformation, and the seal support 9 Is pulled upward and the seal member 10 separates from the floor surface. Therefore, the door 3 can be opened smoothly.

Here, when the adjusting cylinder 16 rotates due to the impact or vibration accompanying the opening and closing of the door 3, the adjusting cylinder 16 is displaced in the axial direction, and the pushing amount of the adjusting cylinder 16 when the door 3 is closed changes. The contact pressure of the seal member 10 with respect to the floor surface changes, the sealing performance is impaired, or the seal member 10 comes into strong contact with the floor surface.

However, as shown in FIGS. 2 and 4, the adjusting cylinder 16 is rotated by the engagement of the engaging concave portion 21 provided on the rear end surface of the adjusting cylinder 16 and the projection 20 provided on the front end surface of the anti-rotation piece 17. Since it is stopped, the adjustment cylinder 16 does not rotate due to shock, vibration, etc. accompanying opening and closing of the door 3. Therefore, the seal member 10 is reliably held in the adjusted state in which it properly contacts the floor surface.

When the adjustment cylinder 16 is rotated with the door 3 opened, the rounded tip of the protrusion 20 is pushed by the inner surface of the engagement recess 21 and the detent piece 17 resists the elasticity of the spring 18. The adjustment cylinder 16 can be moved backward to adjust the position in the axial direction. By adjusting the position of the adjusting cylinder 16, the amount of deformation of the elastic body 8 when the door 3 is closed changes, and the contact pressure of the seal member 10 with respect to the floor surface can be adjusted.

According to the embodiment, the adjusting cylinder 16 is provided with the engaging concave portion 21 and the anti-rotation piece 17 is provided with the projection 20, but conversely, the adjusting tube 16 is provided with the projection, and the anti-rotation piece is provided. An engaging recess may be provided in 17.

Further, the mold 6 shown in FIG. 3 is omitted, and the door 3
The seal fitting groove 7 may be directly provided on the lower surface of the.

[0027]

As described above, according to the present invention, the detent piece, which is detented and slidable with respect to the screw shaft, is pressed against the adjusting cylinder by the elastic force of the spring, and the detent piece is adjusted. Since the protrusion is provided on one side and the engaging recess is provided on the other side of the facing surface of the cylinder,
It is possible to prevent the adjustment cylinder from naturally rotating due to shock or vibration associated with opening and closing of the door, and it is possible to reliably hold the sealing member in an adjusted state in which it properly contacts the floor surface.

Further, since the projection has a rounded tip, when a rotational force is applied to the adjusting cylinder, the projection disengages from the engaging recess,
The adjustment tube can be rotated. Therefore, the contact pressure of the seal member can be adjusted by rotating the adjusting cylinder as in the conventional case.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an enlarged main part of FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door frame 2 Doorway 3 Door 7 Seal fitting groove 8 Elastic body 9 Seal support body 10 Seal member 15 Screw shaft 16 Adjusting cylinder 17 Detent piece 18 Spring 20 Protrusion 21 Engagement recess

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazunori Aoki 2-12-21 Shimanouchi, Chuo-ku, Osaka City Shibutani Co., Ltd.

Claims (1)

[Claims] 1. At the bottom of the door that opens and closes the doorway of the door frame,
A seal fitting groove extending in the width direction of the door is provided, and a band-shaped elastic body and a seal support body below the seal fitting groove are incorporated in the seal fitting groove, and one end of the elastic body located on the door tip side of the door is installed. It is fixed to the door, a screw shaft is attached to the other end, and the tip of the adjusting cylinder screw-engaged with the screw shaft is pressed in the axial direction by the contact with the inner surface of the vertical frame of the door frame, so that the elastic body is moved downward. In a door bottom sealing device in which a seal member provided on a lower surface of a seal support member is elastically contacted with a floor member by elastically deforming the elastic support member and moving the seal support member downward, -Shaped anti-rotation piece is slidably attached, and the anti-rotation piece is pressed against the rear end surface of the adjustment tube by a spring. But Sealing device Doabotomu characterized in that a coupling engagement recess.