JP2003193764A - Door bottom closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the cost of a closing device for sealing a space between the lower end of a door and a floor face by lowering a seal holding body when closing the door, and to miniaturize the width dimension of a guide frame for accommodating the seal holding body. <P>SOLUTION: A first guide groove 7 of the guide frame 4 fitted to the lower part of the door 2 is provided therein with a sliding pin 12 pushed into the first guide groove 7 by abutting on a side face 1a of an entrance 1 when closing the door 2 and given outward projecting property by a spring 13. A second guide groove 8 of the guide frame 4 is provided therein with the seal holding body 15 in a liftable manner. The seal holding body 15 is suspension-supported by a cord 19 tensed and loosened by the movement of the sliding pin in a cross direction. As a result, the cost is reduced, and the width dimension of the guide frame is miniaturized. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door bottom closing device for closing a gap between a lower end of a door and a floor surface in a closed state of a door for opening and closing an entrance. It is. 2. Description of the Related Art As a door bottom closing device of this kind,
A guide frame is fixed to a lower portion of the door, and a first guide groove and a second guide groove extending long in both sides are provided on the guide frame to guide one end of a leaf spring incorporated in the first guide groove. The slide pin fixed to the frame, the slide pin connected to the other end of the leaf spring was projected outside from the hanging side of the door, and the longitudinal center part of the leaf spring was incorporated in the second guide groove. One connected to a seal frame is conventionally known. In the above door bottom closing device, when the door is closed, the slide pin is moved toward the inside of the first guide groove by contact of the entrance with the side surface of the door hanging side, so that the leaf spring is bent downward. Then, the seal frame is lowered to a position where it comes into contact with the floor by the curvature of the leaf spring, thereby closing the space between the lower end of the door and the floor. [0004] Incidentally, in the above-mentioned conventional door bottom closing device, since a relatively long leaf spring is used, the cost is high and the width is large. Since it is necessary to connect the leaf spring and the seal frame by inserting the leaf spring into a groove extending in the length direction of the seal frame, the seal frame needs to be larger than the width dimension of the leaf spring, and the seal frame is housed. There is an inconvenience that the width of the guide frame in the front-rear direction is large. SUMMARY OF THE INVENTION It is an object of the present invention to provide a door bottom closing device that closes a space between a lower end of a door and a floor surface of an entrance by lowering a seal holding member that holds a sealing member. Is to reduce the width of the guide frame for accommodating therein. In order to solve the above-mentioned problems, according to the present invention, a guide frame is fixed to a lower portion of a door that opens and closes an entrance, and extends in a width direction of the guide frame. At the upper part in the guide groove that opens at the lower surface of the guide frame, a slide pin movably supported from the side of the guide frame on the door hanging side toward the outside and a spring that presses the slide pin toward the outside are provided. In the lower part of the guide groove, a seal holding body which extends long in both sides of the guide frame and has an elastic seal at the lower part which can be in close contact with the floor surface is fitted in a vertically movable manner. One end of a string that suspends and supports a part of the slide pin is connected to the rear end of the slide pin,
The other end is fixed to the guide frame, and when the door is closed, the slide pin is moved into the guide groove by abutment with the side of the door at the door hanging side to loosen the string, and the elastic seal is attached to the floor surface. Thus, a configuration is adopted in which the seal holding body is lowered by its own weight to a position where it comes into contact with the seal holder. As described above, one end is connected to the slide pin, and the other end is suspended and supported by the string fixed to the guide frame. Therefore, the cost can be reduced as compared with the case where the seal holding member is accommodated, and the width of the guide frame accommodating the seal holding body can be reduced. Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 (I) and (II), a door 2 which opens and closes an entrance 1 is supported on one side by an upper and lower part by a hinge 3, and can be opened and closed about the hinge 3. A guide frame 4 is fixed to a lower portion of one side of the door 2. The guide frame 4 extends long in the width direction of the door 2.
As shown in FIGS. 2 and 4, the guide frame 4 has a pair of opposing plate members 5 in the front and rear directions, and on the inner surface of each plate member 5, ridges 6 extending in both sides of the guide frame 4 are provided at opposing positions. The upper side of the ridge 6 is a first guide groove 7, and the lower side is a second guide groove 8. In the first guide groove 7, a first bearing piece 9a and a second bearing piece 9b are fixed in the hanging side of the door 2 at intervals in the longitudinal direction of the guide frame 4. Pin holes 11 are formed in the pieces 9 a and 9 b and the side plate 10 of the guide frame 4, and a slide pin 12 is slidably inserted into the pin holes 11. The slide pin 12 has a flange 12a at the center in the longitudinal direction, and a spring 13 incorporated between the flange 12a and the second bearing piece 9b connects the slide pin 12 to the side of the entrance 1 at the door hanging side. 1a. A string connecting piece 14 is fixed in the first guide groove 7 at a distance from the second bearing piece 9b. On the other hand, a seal holder 15 is provided in the second guide groove 8. The seal holder 15 extends in both directions of the guide frame 4, and an elastic seal 16 made of rubber or the like that can be in close contact with the floor of the entrance 1 is attached to a lower portion thereof. The seal holder 15 can be raised and lowered in the second guide groove 8, and the raised position is limited by the contact with the ridge 6. A groove 17 extending in both sides is formed on the upper surface of the seal holder 15, and a pin 18 is provided at a position offset from the longitudinal center of the groove 17 toward the door end of the door 2. A string 19 for hanging and supporting the seal holder 15 is hung on the lower part of the outer periphery of the pin 18. One end of the string 19 is connected to the rear end of the slide pin 12, and the other end is fixed to the string connecting piece 14. Have been. The door bottom closing device shown in the embodiment has the above structure, and FIGS. 3 and 5 show the door 2 in an open state. In the open state, the slide pin 12 is held at a position protruding outward by the elastic force of the spring 13, and the seal holder 15 is pulled up by the tensioned string 19 and abuts against the lower surface of the ridge 6, and The seal 16 is kept out of contact with the floor surface F. When the door 2 is closed from the state shown in FIGS. 3 and 5, the tip of the slide pin 12 comes into contact with the side surface 1a of the doorway 1 on the door hanging side and stops, and from that state the door 2 is further closed. By rotating the slide pin 1
2 moves in a direction to enter the first guide groove 7. When the slide pin 12 moves into the first guide groove 7, the string 19 is loosened and the seal holder 1 is moved.
5 moves downward by its own weight. As shown in FIG. 2, when the door 2 is completely closed, the elastic seal 16 of the seal holder 15 comes into close contact with the floor A of the entrance 1 and closes between the lower end of the door 2 and the floor A. Here, when the seal holder 15 is lowered, the position of the seal holder 15 offset from the center in the longitudinal direction to the door end side of the door 2 is suspended and supported by the string 19. The seal holder 15 descends with the hanging end of the door 2 first, so that the range in which the elastic seal 16 moves in contact with the floor surface is small, and the elastic seal 1 contacts the floor surface.
6 can be minimized, and scratches on the floor can be minimized. In the embodiment, the guide frame 4 is mounted on the lower part of one side of the door 2. However, a groove extending in the width direction is formed on the lower end surface of the door 2, and the guide frame 4 is mounted in the groove. Is also good. As described above, according to the present invention, the seal holder is suspended by the string which is tensed by the outward movement of the slide pin and loosened by the movement of the slide pin into the guide groove. By lowering and supporting, the cost of the closing device can be reduced as compared with the case where the seal holding body is suspended and supported by using a leaf spring. In addition, it is possible to reduce the width of the guide frame accommodating the seal holding body, and to reduce the swelling amount of the guide frame when using the guide frame on one side of the door, thereby reducing the design value of the door. Absent.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (I) is a cross-sectional plan view showing an embodiment of a closing device according to the present invention, and FIG. 1 (II) is a front view showing a lower portion of a door of FIG. 1 (I). FIG. 3 is a partially cutaway front view showing an enlarged part of (II). FIG. 3 is a partially cutaway front view showing an opened state of a door. FIG. 4 is a sectional view taken along line IV-IV of FIG. 3 is a cross-sectional view taken along the line VV in FIG. 3. [Description of References] 1 Door 1a Side surface 4 Guide frame 7 First guide groove 8 Second guide groove 12 Slide pin 13 Spring 15 Seal holder 16 Elastic seal 19 String F Floor

Claims (1)

Claims: 1. A guide frame is fixed to a lower portion of a door that opens and closes an entrance, and extends in a width direction of the guide frame, and has an upper portion in a guide groove that opens at a lower surface of the guide frame. A slide pin movably supported from the side of the guide frame at the door hanging side toward the outside and a spring for pressing the slide pin to the outside are incorporated.The lower part of the guide groove has a guide frame. One end of a string that extends long in both sides and has a seal holding body having an elastic seal that can be in close contact with the floor surface at the lower part is fitted up and down, and suspends and supports a part of the length of the seal holding body in the length direction. It is connected to the rear end of the slide pin, the other end is fixed to the guide frame, and when the door is closed, the slide pin is moved toward the guide groove by abutment with the door hanging side surface of the entrance. The string is loosened and the elastic seal contacts the floor Closure device Doabotomu which is adapted to lower the seal holding member by its own weight to a position.