JP3232871B2 - Door closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door closing device used to close a gap formed between a lower edge of a door rotatably supported by a door frame and a floor surface. It is.

[0002]

2. Description of the Related Art Conventionally, as such a door closing device, for example, there has been one shown in FIG.

[0003] As shown in the figure, a door closing device 101 is shown.
Is provided at a lower edge of a door rotatably supported by a door frame having a lower frame at the same level as the floor surface, and is provided on a hanging base 102a side of a housing 102 embedded in the lower frame of the door. And a rod 103 which is slidably provided and which is pressed by a door frame when the door is closed and moves toward the door tip 102b, and which is arranged to bend downward along the housing 102 and has one end connected to the rod 103. A leaf spring 105 having the other end connected to the block 104 on the side of the door, and a leaf spring 105 disposed in a hollow portion of the housing 102 in a longitudinal direction and connected to a substantially central portion of the leaf spring 105 to bend and stretch the leaf spring 105. Elevating body 106 that can be vertically translated
And a gap closing tight member 107 held by the elevating body 106 and protruding and retracting from the housing 102 as the elevating body moves up and down.

In this closing device 101, when the door is closed, the rod 103 is pressed by the door frame and moves to the door tip 102b side, and the leaf spring 105 bent downward is further bent to lower the elevating body 106. Therefore, the clogging tight material 1
07 projects downward from the housing 102 to close a gap formed between the lower edge of the door and the lower frame of the door frame.

[0005]

However, in the conventional door closing device 101, since the door closing device 101 is provided at the lower edge of the door, the door closing device 101 does not trip a person or obstruct the passage of a wheelchair. The gap formed between the lower edge and the lower frame of the door frame can be closed, but a gap can be formed between the vertical frame on the door end side of the door frame and the door end side of the gap closing tight material 107. Therefore, there is a problem that it is difficult to say that airtightness and watertightness are perfect, and solving this problem has been a conventional problem.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to close a gap formed between a lower edge of a door and a lower frame without obstructing the passage of a person or a wheelchair. It is an object of the present invention to provide a door closing device capable of making airtightness and watertightness at a lower end portion of a front vertical frame almost perfect.

[0007]

SUMMARY OF THE INVENTION The present invention is provided along a lower edge of a door rotatably supported by a door frame having a door frame having a vertical frame tight member, and is provided for closing and opening the door. In a door closing device provided with a gap closing tight material that descends and ascends, a vertical frame tight material closely contacts a door side vertical frame tight material when the door is closed at a door end side of the gap closing tight material. The door closing device has a structure in which a magnet is provided in one of the vertical frame tight member close contact portion and the door side vertical frame tight material, and a magnet or a magnetic body is provided in one of the other. Is a means for solving the conventional problem.

In one embodiment, a magnet is incorporated in one of the vertical frame tight material closely contact portion and the door frame side vertical frame tight material, and a magnet or a magnetic material is incorporated in one of the other. As a preferred embodiment, as a preferred embodiment, the end face of the vertical frame tight material close portion extending from the door end side end of the gap closing tight material to the door tip side vertical frame tight material side is in close contact with the door tip side vertical frame tight material. As a more preferred embodiment, the door-side vertical frame tight material can be tightly attached to the door finding surface in the tight material holding portion extending from the door-side vertical frame of the door frame to the hanging side. It shall be retained, and the vertical frame tight material close portion will be closed to cover the door end side end surface of the tight material, and when the door is closed, it will extend to the door side vertical frame tight material side that is in close contact with the door finding surface, and the end surface will be The structure shall be close to the vertical frame tight material on the door side. It is set to.

In this case, in an embodiment adopted as necessary, a downwardly inclined surface is provided at a portion of the lower end portion of the close portion of the vertical frame tight material on the door end side vertical frame tight material side.

[0010]

In the door closing device according to the first aspect of the present invention, since the above structure is adopted, when the door is closed, the vertical frame of the gap closing tight material is lowered to close the gap below the door. The tight material close part is in close contact with the door frame side vertical frame tight material, and the magnet provided on one of the vertical frame tight material close part and the door side vertical frame tight material is provided on one of the other. And the magnet provided on one side attracts the magnetic body provided on the other side. Will be secured.

Further, in the door closing device according to one embodiment, the magnet on one side and the magnet or the magnetic body on either side of the tight portion of the vertical frame tight material and the vertical frame tight material on the door end side are: Since the door frame is not exposed to the outside, the airtightness and the watertightness of the lower end of the vertical frame on the door end side of the door frame are ensured, and the design and the rust prevention are also improved.

Further, in the door closing device according to a preferred embodiment of the present invention according to the first aspect, since the above structure is employed, the tightness of the vertical frame tight material close portion to the door-side vertical frame tight material is excellent. In this case, in the invention according to claim 4, since the door end side end surface of the gap closing tight material is not exposed, the design of the door end side lower end portion of the door is improved, and the tightness of the vertical frame tight material close portion is improved. Since the door-side vertical frame tight material that can be brought into close contact with the door finding surface is located on the movement path of the end surface, the closeness of the vertical frame tight material close part to the door-side vertical frame tight material is excellent. It will be.

Furthermore, in an embodiment adopted as needed, when the door is closed, the downwardly inclined surface provided in the vertical frame tight material close portion does not contact the floor surface, so that the vertical frame tight material close portion and the floor close. The frictional force that occurs between the surface is reduced,
As a result, the vertical frame tight member closely contacts the door-side vertical frame tight member smoothly and reliably without receiving a large resistance.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

1 to 10 show one embodiment of a door closing device according to the present invention.

As shown in FIG. 8 to FIG.
Are the vertical frame 2, the vertical frame 3, the vertical frame 3, the upper frame 4, and the floor F
The door frame 1 is rotatably supported via a pivot hinge 6 on a door frame 1 having a lower frame 5 at the same level as that of the door frame. A door end side vertical frame tight material 2A, a hanging side vertical frame tight material 3A, and an upper frame tight material 4A are provided in each longitudinal direction.

As shown in FIG. 3, a door closing device 20 for closing a gap between the door 10 and the lower frame 5 includes a device main body 21 disposed longitudinally in a hollow portion of a lower frame 11 of the door 10. ,
A rod 22 provided on the hanging side of the apparatus main body 21 and a leaf spring 23 arranged to be bent downward along the apparatus main body 21
And an elevating body 24 arranged along the apparatus main body 21 and capable of moving in parallel in the vertical direction, and a gap closing tight member 25 held by the elevating body 24.

As shown in FIG. 7, the rod 22 is slidably fitted in a rod sliding groove 21a provided in a hollow portion of the apparatus main body 21, and has a U-shaped end on the hanging side. 22a is
When the door 10 is opened, the door 10 is engaged with a pivot 8 on a pivot pedestal 7 constituting the pivot hinge 6. The tip of the U-shaped end 22a is the door 1
At the time of the closing of 0, the rod drive pin 9 provided on the pivot pedestal 7 is brought into contact with the rod drive pin 9, whereby the rod 22 is pressed by the rod drive pin 9, separates from the pivot 8, and separates from the pivot 8. It moves to the door tip side of the door 10 by the distance D.

The leaf spring 23 has one end connected to the door-side end 22b of the rod 22 and the other end connected to the door-side of the door 10. The amount of deflection of the leaf spring 23 can be adjusted. This is performed by a screw 23a provided on the door end side of the door 10. By connecting a substantially central portion of the leaf spring 23 to the elevating body 24, the elevating body 24 is lowered and raised with the bending and extension of the leaf spring 23.

As shown in FIGS. 1 and 2 and FIGS. 4 to 6, the gap closing tight material 25 has an arc-shaped pedestal pressure contact portion which is in pressure contact with the outer peripheral surface 7a of the pivot pedestal 7 at the hanging end. 2
5a and a plate-shaped vertical frame tight material close portion 25b that covers the door end side end surface of the gap closing tight material 25 at the door end side end. In this embodiment, the door-side vertical frame tight material 2A is held in a tight-material holding portion 2a extending from the door-side vertical frame 2 to the hanging-side vertical frame 3 side so as to be in close contact with the found surface of the door 10. And vertical frame tight material close contact 2
5b, when the door 10 is closed, the close end surface 25d extending toward the door-side vertical frame tight material 2A is brought into close contact with the door-side vertical frame tight material 2A. Also, a magnet 29 is attached to a portion of the vertical frame tight material close portion 25b near the close end face 25d.
And a magnetic material 3 attached to the door-side vertical frame tight material 2A.
By incorporating 0, the tightness between the vertical frame tight material close portion 25b and the door-side vertical frame tight material 2A when the door 10 is closed is enhanced.

In this case, the lower frame 5 of the door frame 1 is covered with a lower frame cover 26, and the outer peripheral surface 7a of the pivot pedestal 7 is smoothly connected to the lower frame cover 26. By providing the waterproof wall 27, the suspension base side vertical frame tight member 3 </ b> A of the door frame 1 whose lower end surface is in contact with the lower frame cover 26 and the pivot pedestal 7 are connected. On the other hand, a raised portion 28 is provided on the door end side of the lower frame cover 26, and the lower end surface of the door frame side vertical frame tight material 2A of the door frame 1 is smoothly connected to the raised portion 28. Then, the vertical frame tight material close portion 25 in the form of a plate is used.
A lower inclined surface 25c which is in close contact with the upward inclined surface 28a of the raised portion 28 when the door 10 is closed is provided in a lower end portion of the lower end portion b on the door-end side vertical frame tight material 2A side.

In such a door closing device 20, when closing the door 10, the U-shaped end 22a of the rod 22 is used.
Is in contact with the rod driving pin 9 on the pivot pedestal 7, the rod 22 is pressed by the rod driving pin 9 and is separated from the pivot 8, and moves to the door end side of the door 10 by the separated distance D. I do.

During this time, as the rod 22 moves toward the door tip side, the leaf spring 23 which has been bent downward is further bent, so that the elevating body 24 is moved from the position shown by the imaginary line in FIG. As a result, the gap closing tight material 25 moves down to close the gap formed between the door 10 and the lower frame 5 of the door frame 1.

At this time, the lowered gap closing tight material 25
Is pressed against the outer peripheral surface 7a of the pivot pedestal 7, and the suspension-side vertical frame tight member 3A and the pivot pedestal 7 are connected via the waterproof wall 27. No gap is formed at the lower end of the hanging-side vertical frame 3.

On the other hand, when the door 10 is closed, the close end face 25d of the vertical frame tight material close portion 25b is in close contact with the door-side vertical frame tight material 2A. 29 attracts the magnetic body 30 on the door-side vertical frame tight material 2A side, so that no gap is formed at the lower end of the door-side vertical frame 2 of the door frame 1, and therefore, the door-side vertical frame The tightness 2A, the upper frame tightness 4A, the hanging side vertical frame tightness 3A, and the gap closing tightness 25 ensure airtightness and watertightness between the door frame 1 and the door 10 over the entire circumference. Becomes

When the close end face 25d of the vertical frame tight material tight contact portion 25b comes into close contact with the door-side vertical frame tight material 2A,
The door-side vertical frame tight material 2A is in a vertical frame tight material close portion 25b.
Is located on the movement path of the close end face 25d, the closeness of the vertical frame tight material close portion 25b to the door-side vertical frame tight material 2A is excellent, and the vertical frame tight material close portion 25b The vertical frame tight material closely contacting portion 25b and the lower frame 5
And the frictional force generated between
Is provided with an upwardly inclined surface 28a which is in close contact with the downwardly inclined surface 25c of the vertical frame tight material close portion 25b, so that the vertical frame tight material close portion 25b receives a large resistance from the lower frame 5 and the raised portion 28. It comes into close contact with the door-side vertical frame tight material 2A smoothly and reliably.

The outer peripheral surface 7a of the pivot pedestal 7 and the lower frame cover 26 are smoothly continuous, and
8, the door contact surface of the door-end side vertical frame tight material 2A smoothly continues to the lower frame cover 26, so that the pressure contact of the pedestal pressure contact portion 25a and the vertical frame tight material close contact portion 25b are tight. At this time, the outer peripheral surface 7a of the pivot pedestal 7 and the door contact surface of the door-side vertical frame tight material 2A,
In addition, since the waterproof wall 27 is substantially integrated with the lower frame cover 26 via the lower frame cover 26, the airtightness and watertightness of the lower ends of the two vertical frames 2 and 3 of the door frame 1 are further improved.

Further, since the magnet 29 of the vertical frame tight member closely contacting portion 25b and the magnetic body 30 of the door frame side vertical frame tight material 2A are not exposed to the outside, the lower end portion of the door 10 and the door side of the door 10 are not exposed. The design and rust prevention of the lower end of the vertical frame 2 are improved, and the vertical end portion 25b of the vertical frame tight member 25b is formed in a plate shape. Because it does not become
The design of the lower end portion of the door 10 on the door tip side is further improved.

Further, since the lower end of the door-side vertical frame tight material 2A of the door frame 1 is located on the raised portion 28, the lower end of the door-side vertical frame tight material 2A is submerged. The situation will be avoided.

[0030]

As described above, in the door closing device according to the first aspect of the present invention, when the door is closed, the vertical frame of the gap closing tight material is lowered to close the gap below the door. In addition to the tight part of the tight material being in close contact with the door-side vertical frame tight material, the magnet provided on one of the vertical-frame tight material close part and the door-side vertical frame tight material is provided on one of the other. The magnets attracted to each other, or the magnets provided on one of them attracted the magnetic material provided on the other, resulting in a gap at the lower end of the door frame on the door-side vertical frame. As a result, a very excellent effect that the air-tightness and the water-tightness of the lower end portion of the vertical frame at the door end side of the door frame can be reliably maintained is obtained. In one embodiment, the vertical frame Tight material close part and door frame vertical frame tight Since the magnet on one side and the magnet or magnetic body on the other side are not exposed to the outside, in addition to ensuring the airtightness and watertightness of the lower end of the vertical frame at the door end of the door frame, , Can also improve the design and rust prevention, and in a preferred embodiment,
The close contact between the vertical frame tight material and the door end side vertical frame tight material can be made excellent. In this case, in the invention according to claim 4 as a more preferred embodiment, the door of the gap closed tight material is used. Since the front end surface can be covered, it is possible to further improve the design of the lower end portion of the door at the door end side, and the vertical movement of the end surface at the vertical frame tight material close portion at the door side vertical frame tight material is possible. Since it is located on the upper side, a very excellent effect that the closeness of the vertical frame tight material close contact portion to the door-side vertical frame tight material can be further improved is brought about.

Further, in an embodiment adopted as necessary, when the door is closed, the frictional force generated between the close portion of the vertical frame tight material and the floor surface can be reduced. A very excellent effect that the door-side vertical frame tight material can be brought into close contact with the door frame side tight material without any resistance is provided.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a lower end portion of a door showing an embodiment of a door closing device according to the present invention.

FIG. 2 is an explanatory view of the door closing device in FIG.

3A is an explanatory front view of the door closing device shown in FIG. 1. FIG. (B) It is sectional drawing in the intermediate part of FIG.3 (a).

FIG. 4 is a partial perspective explanatory view of a door tip portion of the door closing device shown in FIG. 1 as viewed from a hanging side;

FIG. 5 is a partial perspective explanatory view of a door top portion of the door closing device shown in FIG.

FIG. 6A is a partial perspective view of a lower frame cover in the door closing device shown in FIG. 1; (B) It is a fragmentary perspective view showing in detail the hanging side of the door closing device in FIG.

FIG. 7A is an explanatory view of the operation of a rod in the door closing device shown in FIG. 1; (B) It is a perspective explanatory view which shows a rod in detail.

8 is an explanatory front view of a door to which the door closing device shown in FIG. 1 is attached.

FIG. 9 is an explanatory horizontal sectional view of the door shown in FIG. 8;

FIG. 10 is an explanatory vertical sectional view of the door shown in FIG. 8;

FIG. 11 is an explanatory perspective view showing a conventional door closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door frame 2 Door-end side vertical frame 2A Door-end side vertical frame tight material 2a Tight material holding part 10 Door 20 Door closing device 25 Gap closing tight material 25b Vertical frame tight material close contact portion 25c Downward inclined surface 25d Close contact end surface (end surface) ) 29 magnet 30 magnetic material

Claims (5)

(57) [Claims] 1. A door frame is provided along a lower edge of a door rotatably supported by a door frame having a door frame having a vertical frame tight material,
In a door closing device provided with a gap closing tight material which descends and rises with closing and opening of the door, a door-side vertical frame tight material is provided at the door end side of the gap closing tight material when the door is closed. It is provided that a vertical frame tight material closely contacting portion is provided, and a magnet is provided in one of the vertical frame tight material close portion and the doorside vertical frame tight material, and a magnet or a magnetic body is provided in one of the other. Characteristic door closing device. 2. The method according to claim 1, wherein a magnet is built in one of the vertical frame tight material close contact portion and the door-side vertical frame tight material, and a magnet or a magnetic material is built in one of the other. Door closing device. 3. The end face of the vertical frame tight material closely extending from the door end side end of the gap closing tight material to the door tip vertical frame tight material side is a surface closely contacting the door tip side vertical frame tight material. The door closing device according to claim 1 or 2. 4. A vertical frame, wherein the door-side vertical frame tight material is held by a tight material holding portion extending from the door-side vertical frame of the door frame to the hanging side so as to be able to come into close contact with a door finding surface. The tight material closes the gap at the door end side of the tight material that covers the door end side end face of the tight material and extends to the door side vertical frame tight material side that is in close contact with the door finding surface when the door is closed, and the end face is closed to the door side vertical frame tight material. 4. The door closing device according to claim 1, wherein the door closing device is in close contact. 5. The door closing device according to claim 3, wherein a downwardly inclined surface is provided at a portion of the lower end portion of the vertical frame tight material closely contacting portion on the door end side vertical frame tight material side.