JPH10220123A - Seal device of sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically seal hermetically the gap between the lower end of the sliding door and the floor face by the closing motion of the sliding door. SOLUTION: A guide groove of which lower part is opened, is formed at the lower end of a sliding door 3 freely transferred along a rail laid on the upper part of an entrance/exit. A seal frame 13 is inserted in the guide groove to support it to be vertically movable. A guide pin 31 protruded on the floor face 30 is inserted in the seal frame 13. A slide frame 40 is assembled between the guide groove and the outer periphery of the seal frame 13 to support it so as to freely slide to the transfer direction of the sliding door 3. When transferring the sliding door to the closing direction, the sliding frame 40 is stopped by the contact of the first engaging piece 41 provided on the sliding frame 40 with the guide pin 32 and the seal frame 13 is transferred downward by the action of the cam structure 60 at the relative transfer of the sliding frame 40 and the sliding door 3 and the elastic seal 15 provided in the seal frame 13 is closely stuck on the floor face 30 to seal hermetically the gap between the sliding door 3 and the floor face 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door sealing device for sealing between a lower end of a sliding door and a floor when the sliding door is slidably supported and closes an entrance.

[0002]

2. Description of the Related Art In a sliding door apparatus in which a rail is mounted above an entrance and the sliding door is slidably supported along the rail, the entrance is closed by the sliding door because the sliding door moves while being suspended from the rail. When
A gap is formed between the lower end of the sliding door and the floor, and the room cannot be kept airtight.

In a door device in which an entrance is opened and closed by a door, when the door is closed,
There has been proposed a sealing device for sealing between the lower end of the door and the floor surface. As the sealing device, an inset is provided on the end face of the hanging side of the door, and when the door is closed, the inset is pushed into the inside of the door by abutting against the vertical frame of the door frame, and is pushed into the lower part of the door by the pushing. The center of the leaf spring is bent downward to lower the seal frame, and the elastic seal provided on the seal frame is brought into close contact with the floor surface to seal between the door and the floor surface. Conventionally known.

[0004]

If the above-mentioned door bottom sealing device is adopted as a sliding door sealing device, when the sliding door is closed, the retractor contacts the door stop surface of the entrance and is pushed into the sliding door, and the leaf spring is closed. The seal frame can be lowered by bending to seal between the lower end of the sliding door and the floor surface.However, since the projecting element is always provided with an outward projecting property by the restoring elasticity of the leaf spring, The door is pushed in the opening direction by the restoring elasticity of the spring, and the door cannot be kept closed.

[0005] Therefore, the sealing device for the door bottom cannot be used as the sealing device for the sliding door, and a sealing device in which the lower end of the sliding door can be automatically sealed by an operation of closing the sliding door has not yet been known. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a sliding door sealing device that can automatically seal a gap between a lower end of the sliding door and a floor by closing the sliding door.

[0007]

In order to solve the above-mentioned problems, according to the present invention, a long rail is provided in the upper part of the entrance and exit in the left-right direction, and the lower part of the sliding door movably supported along the rail is provided. A guide groove with a long lower part opening in the width direction of the sliding door is provided, and a seal frame having a U-shaped cross section is inserted into the guide groove and supported so as to be able to move up and down, and the lower part of the seal frame with respect to the floor surface. A stickable elastic seal is provided, and a guide pin whose upper part is inserted into the seal frame projects from the floor surface at an open position of the sliding door, and has a cross-sectional shape between the inner periphery of the guide groove and the outer periphery of the seal frame. Incorporates a U-shaped slide frame and movably supports the sliding door in the sliding direction of the sliding door. The sliding frame includes a first engagement piece that comes into contact with the guide pin in a stroke in a direction in which the sliding door closes, and a first engagement piece thereof.
A second engaging piece that is provided on the door tip side of the engaging piece and is swingably supported to come into contact with the guide pin in both a stroke in a direction in which the sliding door closes and a stroke in the opening direction; Holding means for stopping and holding the second engagement piece is provided until a predetermined stroke moves toward the release position,
A configuration is provided in which cam means for converting the relative movement of the slide frame and the sliding door into vertical movement of the seal frame is provided.

Here, as the holding means, a protruding piece is provided at the end of the second engaging piece on the swing center side, and a guide piece with which the tip of the protruding piece abuts is attached to the lower surface of the top wall of the guide groove. Can be adopted.

Further, as the cam means, windows are formed on both side plates of the slide frame, and pins having both ends located in the windows are supported by seal frames. It is possible to adopt a configuration having a configuration in which an inclined cam edge inclined with an upward slope and a horizontal cam edge continuously extending in the horizontal direction are provided at the upper end of the cam edge.

With the above construction, when the sliding door is closed, the sliding frame is stopped by the contact of the first engaging piece with the guide pin, and the sliding door moves with respect to the stopped sliding frame. The operation of the means lowers the seal frame to bring the elastic seal into close contact with the floor surface.

When the sliding door is moved in the opening direction, the sliding frame stops due to the contact of the second engaging piece with the guide pin, and the sliding door moves in the opening direction with respect to the stopped sliding frame. The seal frame is pulled up by the operation of the cam means, and the contact of the elastic seal with the floor surface is released.

[0012]

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

As shown in FIG. 1, a rail 2 which is long in the left-right direction is attached to an upper portion of the entrance 1. The sliding door 3 that opens and closes the entrance 1 has a door roller 4 supported by the rail 2 at an upper portion, and is movably supported along the rail 2.

As shown in FIGS. 2 to 4, a groove 5 is formed on the lower surface of the sliding door 3 from the end face on the door tip side to the end face on the door butt side. The guide frame 6 inserted into the groove 5 has a U-shaped cross section, and between the pair of side plates 7, a pair of first ribs 8 and second ribs 9 facing each other on the left and right are formed to form both ribs 8. , 9 is provided with a guide groove 10 whose lower part is opened.

An end plate 11 is screwed to the end surface of the sliding door 3 on the door end side and the door end side, and a projection 12 provided on the end plate 11 is provided between the top wall of the guide frame 6 and the first rib 8. The guide frame 6 is inserted and is kept in the inserted state.

The seal frame 13 inserted into the guide groove 10 of the guide frame 6 has a U-shaped cross section. The seal frame 13 is inserted into the guide frame 6 with the opening formed between the opposed side plates 14 facing downward.

The seal frame 13 has substantially the same length as the guide frame 6, and an elastic seal 15 is provided at the lower end of the side plate 14.

The seal frame 13 is supported by a lift guide mechanism 20 so as to be able to move up and down. The elevating guide mechanism 20 includes:
A U-shaped guide frame 21 is attached to the lower surface of the top wall of the guide frame 6 by means of screws, and a pair of guide pieces 22 of the guide frame 21 are formed with vertically elongated holes 23 extending vertically. 24 with both ends slidably inserted into
Are supported by a seal frame 13.

A guide pin 31 is provided on the floor 30 at a position where the sliding door 3 is opened. The guide pin 31 has a rotatable roller 32 at an upper portion, and the roller 32 faces the inside of the seal frame 13, and when the sliding door 3 slides, rotates by contact with the inner surface of the seal frame 13 that moves with the sliding door 3, The sliding door 3 is prevented from swinging in the front-rear direction.

A slide frame 40 is installed between the inner periphery of the guide groove 10 and the outer periphery of the seal frame 13 in the guide frame 6. The slide frame 40 has a U-shaped cross section and is slidably supported along the guide groove 10.

A first engagement piece 41 is provided at the end of the slide frame 40 at the rear end of the door. The first engagement piece 41 is inserted into an elongated hole 42 formed in the top wall of the seal frame 13 and faces the seal frame 13. When the sliding door 3 is moved in the closing direction, the first engagement piece 41 It comes into contact.

Further, the slide frame 40 is provided with a second engagement piece 43 on the door end side of the first engagement piece 41.

The second engagement piece 43 is swingably supported via a pin 45 on a support piece 44 provided on the lower surface of the top wall of the slide frame 40.

The second engaging piece 43 is used for closing the sliding door 3 and opening the sliding door 3 in both steps.
When it comes into contact with the first roller 32 and comes into contact in the opening step, it swings upward by the contact with the roller 32 and passes over the guide pin 31.

On the other hand, at the time of contact in the closing step, the holding mechanism 5
The operation of 0 prevents the sliding door 3 from swinging until it moves a predetermined stroke.

The holding mechanism 50 is provided with a projection 51 at the end of the second engagement piece 43 on the swing center side, and inserts the projection 51 into a window 52 formed on the top wall of the slide frame 40. Guide frame 6
A guide piece 53 of a predetermined length to which the tip of the protruding piece 51 abuts is fixed to the lower surface of the top wall via means by screwing.
The engagement piece 43 is prevented from swinging toward the door tip side.

A cam mechanism 60 is provided between the slide frame 40 and the seal frame 13 to convert the sliding movement of the slide frame 40 into the vertical movement of the seal frame 13.

The cam mechanism 60 is connected to the side plate 40 of the slide frame 40.
a window 61 is formed in a, and an inclined cam edge 62 that is inclined with an ascending gradient toward the rear side of the door at an inner peripheral lower edge of the window 61;
A horizontal cam edge 63 extending horizontally in the continuous direction is provided at the upper end of the inclined cam edge 62, and a pin 64 having both ends inserted into the window 61 is supported by the seal frame 13.

FIGS. 1 and 2 show a state in which the sliding door 3 has opened the entrance 1, the pin 64 of the cam mechanism 60 is supported by the horizontal cam edge 63, and the seal frame 13 is held in a raised state. .

The projecting piece 51 of the second engaging piece 43 is arranged at a position offset from the guide piece 53 toward the door top.

When the sliding door 3 is moved from the state shown in FIGS. 1 and 2 in the closing direction (left direction in FIG. 1), the inner surface of the seal frame 13 moves while being guided by the rollers 32 of the guide pins 31. Sliding door 3 by the guidance by 32
Moves without swinging back and forth.

When the sliding door 3 moves to a position where the second engaging piece 43 comes into contact with the roller 32 and the sliding door 3 moves further from that position, the second engaging piece 43 comes into contact with the roller 32. As a result, it swings around the pin 45 toward the rear side of the door. When the second engagement piece 43 passes through the position of the guide pin 31, the second engagement piece 43 swings downward by its own weight and returns to the original stationary state.

When the first engagement piece 41 comes into contact with the roller 32 and the sliding door 3 moves in the closing direction, the roller 32
The sliding door 3 moves with respect to the sliding frame 40 in a stopped state by the contact of the first engagement piece 41 with the sliding member 40, and the cam mechanism 6 is moved by relative movement of the sliding door 3 and the sliding frame 40.
0 is disengaged from the pin 64 and the inclined cam edge 6
2 faces the pin 64.

For this reason, when the sliding frame 3 is moved downward by its own weight and the sliding door 3 moves to a position where the door end side end surface of the sliding door 3 comes into contact with the door stop surface 1a of the doorway 1, FIG. 6 and FIG. As shown, the elastic seal 15 of the seal frame 13 comes into contact with the floor surface 30 to seal between the lower end of the sliding door 3 and the floor surface 30.

As described above, when the sliding door 3 is completely closed, the elastic seal 15 comes into close contact with the floor surface 30 and the second
The projecting piece 51 provided on the engaging piece 43 faces the lower surface of the guide piece 53 and is prevented from swinging toward the door end.

When the sliding door 3 is slid toward the open position, the second engaging piece 43 comes into contact with the roller 32 of the guide pin 31, as shown in FIG. Sliding door 3 against the sliding frame 40
Moves.

When the second engagement piece 43 comes into contact with the roller 32, the pin 64 of the cam mechanism 60 comes into contact with the inclined guide edge 62, and the relative movement between the slide frame 40 and the sliding door 3 causes the pin 64 to move. Moves along the inclined cam edge 62,
The seal frame 13 is lifted upward to release the seal.

The projecting piece 51 of the second engaging piece 43 is
When the sliding door 3 and the slide frame 40 relatively move to a position where the sliding door 3 is disengaged from the lower surface of the sliding door 3, the second engagement piece 43 swings about the pin 45 toward the door tip side as the sliding door 3 moves.
Further, the pin 64 of the cam mechanism 60 faces the horizontal cam edge 63, and the seal frame 13 is held in a raised state.

When the second engagement piece 43 passes through the position of the roller 32, the second engagement piece 43 swings downward by its own weight, and the slide frame 40 moves to the open position together with the sliding door 3.

In the embodiment, the guide groove 1 whose lower end is opened at the lower part of the sliding door 3 when the guide frame 6 is attached.
Although 0 is provided, the guide groove 10 may be formed in the sliding door itself.

[0041]

As described above, according to the present invention, when the sliding door is moved in the closing direction, the first engagement piece abuts on the guide pin, and the cam mechanism operates by the relative movement of the sliding frame and the sliding door. As a result, the seal frame descends to a position where the elastic seal is in close contact with the bottom surface, so that the space between the lower end of the sliding door and the floor surface can be automatically sealed.

When the sliding door is opened, the second engaging piece abuts on the guide pin, the sliding door and the slide frame move relative to each other, and the seal frame is pulled up by the action of the cam mechanism, so that the seal is automatically released. Can be.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional front view showing a lower part of the sliding door of the above.

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

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a partially cut-away exploded perspective view of the same.

FIG. 6 is a vertical sectional front view showing the sliding door fully opened;

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6;

FIG. 8 is a sectional view showing a state where the sliding door shown in FIG. 6 is slightly opened;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 entrance 2 rail 3 sliding door 6 guide frame 10 guide groove 13 seal frame 30 floor surface 31 guide pin 40 slide frame 41 first engagement piece 43 second engagement piece 50 holding mechanism 51 projection piece 53 guide piece 60 cam mechanism 61 window 62 Inclined cam edge 63 Horizontal cam edge 64 Pin

Claims (3)

[Claims] 1. A guide rail having a long rail extending in the left-right direction is provided at an upper part of an entrance, and a guide groove is provided at a lower part of a sliding door movably supported along the rail, the lower part being opened in a width direction of the sliding door. A U-shaped seal frame is inserted into the inside to support it vertically, and at the bottom of this seal frame, an elastic seal that can be in close contact with the floor surface is provided. The upper part protrudes a guide pin inserted into the seal frame, and a U-shaped slide frame is incorporated between the inner periphery of the guide groove and the outer periphery of the seal frame to be movable in the sliding direction of the sliding door. The sliding frame has a first engagement piece that comes into contact with the guide pin in a stroke in a direction in which the sliding door closes, and a stroke in a direction in which the sliding door closes, provided on the door tip side of the first engagement piece. In both directions of the opening direction Holding means for stopping the second engaging piece until the sliding door moves a predetermined stroke toward the open position. And a cam means for converting a relative movement between the slide frame and the sliding door into a vertical movement of the sealing frame. 2. The holding means is provided with a projecting piece at an end of the second engaging piece on the swing center side, and a guide piece is attached to the lower surface of the top wall of the guide groove so that the tip of the projecting piece abuts. The sealing device for a sliding door according to claim 1. 3. The cam means has windows formed on both side plates of the slide frame, supports pins having both ends located on the windows with a seal frame, and has a door edge side at the lower inner edge of the window. The sealing device for a sliding door according to claim 1 or 2, comprising a sloped cam edge inclined with an upward slope toward the top and a horizontal cam edge continuously extending horizontally in the upper end of the cam edge.