JP2541219Y2 - 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 and a floor surface in order to improve airtightness and sound insulation performance. Things.

[0002]

2. Description of the Related Art Hitherto, in order to prevent drafts and enhance soundproofing, attempts have been made to close a gap between a lower edge of a door and a floor surface.
No. 2 discloses this.

[0003] That is, the lower door closing device described in the above publication includes a closing member (pressure contact material) provided at the lower end of the door in a state of being urged upward, and a hinge-side end of the door. And a link mechanism for connecting the closing member and the driving rod. The retracting operation of the driving rod upon contact with the door frame when the door is closed is converted into a downward operation of the closing member by the link mechanism. When the door is closed, the closing member projects downward from the lower end of the door to close the gap between the floor and the drive rod and the door frame when the door is opened. When the contact state is released, the closing member is retracted so that the closing member does not hinder the opening and closing operation of the door.

In Japanese Utility Model Application Laid-Open No. 58-137786, a closing member (sealing base) is provided at the lower end of a latent door, which is retracted and urged, and is connected to the closing member at the side edge member of the main door. A kicker for lowering the closing member via the pivoting rod by contacting the pivoting rod, between a position where the kicker can contact the pivoting rod and a position where it cannot contact the pivoting rod; When the kicker is provided at a position where it can be adjusted and the kicker can be brought into contact with the rotating operation rod, the closing member is operated downward at the same time as the closing of the latent door to close the gap between the latent door and the floor surface. At the same time, when the latent door is opened, the closing member can be retracted, and when the kicker is set at a position where it does not abut against the rotating rod, the closing member remains retracted even when the latent door is closed. Sealing equipment for doors with hidden doors There has been disclosed.

[0005]

In such a door closing device, in order to smoothly open and close the door and to ensure good airtightness and sound insulation, the closing member is provided with a floor just before the door is closed. Although it is desirable to abut against the surface, it is generally difficult to adjust the timing between the closing of the closing member and the closing of the door. Although the opening and closing of the opening becomes smooth, the pressure contact state of the closing member against the floor surface is incomplete, so that a draft is generated or the soundproof effect is not sufficiently obtained.

On the other hand, if the closing member descends too early with respect to the closing of the door, the closing member abutting on the floor rubs against the floor, which hinders the smooth opening and closing operation of the door. In addition, there is a problem in that abrasion and breakage are likely to occur in a door-side portion of the closing member, in which the sliding distance with the floor surface is particularly long, which has been a problem in this type of door closing device.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the conventional door closing device, and allows the door to be opened and closed smoothly and has a sufficient pressure contact with the floor surface. An object of the present invention is to provide a door closing device that secures a state and does not impair airtightness and sound insulation performance, and that does not cause wear or damage to a closing member.

[0008]

SUMMARY OF THE INVENTION A door closing device according to the present invention includes a protruding member which is arranged to protrude and retract from a side of a door frame which rotatably supports the door from a hanging side of the door, and a door. And is fixed to the door such that the center of bending at one end is located closer to the hanging side from the center in the width direction of the door, and connected to the protruding member at the other end. A spring which is bent downward by the retracting operation of the protruding member, and which is connected to a substantially central portion of the spring and moves up and down in accordance with the extension of the spring; The door is provided with a closing member that closes a gap formed between the door and the door, and the hanging side of the closing member moves down first in conjunction with the retraction operation of the protruding member. In order to solve the conventional problem described above, It is the means.

[0009]

[Effect of the invention] The door closing device according to the invention includes:
In the closed state of the door, the protruding member protruding from the hanging side of the door toward the door frame comes into contact with the door frame or a member provided on the door frame side and is in a retracted state. Is bent downward, and the closing member connected to the spring protrudes downward, thereby closing the gap formed between the lower edge of the door and the floor surface, and preventing draft. Or improve the sound insulation.

When the door is opened, the contact state of the protruding member with the door frame side is released by the rotation of the door, so that the spring is extended by its elasticity, and the closing member connected to the spring is raised. By doing so, the closed state of the gap is released, and the door is smoothly opened and closed. Further, when the door is closed, the projecting member comes into contact with the door frame or a member provided on the door frame side to perform a retraction operation, whereby the spring bends downward, whereby the closing member is closed. It protrudes downward and closes the gap between it and the floor.

At this time, since the spring is mounted at a position where the center of the deflection is shifted from the center position in the width direction of the door to the hanging side, the spring is moved from the center of the closing member by the bending. Since the side position is pushed downward, and the load is biased to the hanging side of the closing member, the closing member moves down from the hanging side to come into contact with the floor surface, and As the sliding distance on the side becomes shorter and the load on the door tip side becomes smaller, the opening and closing of the door becomes smoother, and the abrasion and damage of the closing member are reduced.

[0012]

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

FIGS. 1 to 4 illustrate an embodiment of a door closing device according to the present invention. In this embodiment, an example is shown in which the closing device is attached to a latent door of a movable partition. I have.

FIG. 2 shows, for example, movable partitions used to divide a large conference room and use it for a conference with a small number of people.
The vehicle runs in a horizontal direction while being suspended on a rail (not shown) provided on an upper frame 25. Latent doors (doors) 26 and 27 are respectively connected to two partitions 21 and 22 on the right side of the drawing via hinges. The door is rotatably mounted to form a double door.

Closing members 21a and 22a are vertically movably attached to the lower ends of the partitions 21 and 22 except for the opening for the hidden door.
The projections 1 and 22 project downward from the lower end in conjunction with a lock mechanism (not shown) for fixing the first and second positions to predetermined positions, thereby closing a gap formed with the floor surface 28. Further, closing members 23a and 24a having lengths substantially corresponding to the widths of the partitions 23 and 24 are attached to lower ends of the partitions 23 and 24 having no latent door, respectively, and a locking mechanism for the partitions 23 and 24 is provided. In the same manner as described above, the airtightness and the sound insulation are ensured by closing the gap between the floor 28 and the floor 28 in the same manner as described above.

The door closing device 1 according to the present invention mainly comprises a leaf spring 2 (spring), a closing member 3, and a rod 4 (projecting member), as will be described later. And 27 at the lower end.

That is, FIG. 3A is a longitudinal sectional view of a portion including the latent door 26 of the movable partition 21, and FIG.
As shown in enlarged form in (b), a lower frame 26a made of a shape having a substantially “U” -shaped cross section that opens downward is provided at the lower end of the latent door 26, and is provided in the lower frame 26a. The closing member 3 of the closing device 1 is vertically movably housed over substantially the entire length of the lower frame 26a, and is connected to the lower frame 26a of the latent door 26 via the leaf spring 2 as described later.

As shown in FIG. 3 (b), tight members 26b, 26b and 3a, 3a made of synthetic rubber are provided on opposing surfaces of the lower frame 26a and the closing member 3, respectively. It comes into contact with the surface to ensure airtightness and sound insulation. Further, the closing member 3
On the lower end surface of the cushioning material 3b, also made of synthetic rubber,
3b is attached, when the closing member 3 protrudes downward, the adhesion between the closing member 3 and the floor surface 28 is increased, and the sound insulation and airtightness are improved.

FIG. 1A is a cutaway front view of the lower end portion of the latent door 26 showing the structure of the door closing device 1, and the closing member 3 housed in the lower frame 26a of the latent door 26 is shown in FIG.
As shown in FIG.
The leaf spring 2 has the other end connected to the rod 4 via a connecting member 7 fixed to the lower frame 26a of the latent door 26 and slidably housed in the housing 6 also fixed to the lower frame 26a. It is connected to a substantially central portion via a spring stand 8.

The leaf spring 2 is arranged such that its center of bending (the center in the longitudinal direction) is located on the hanging side from the center position in the width direction of the latent door 26, that is, a position deviated rightward in the figure. Installed.

The rod 4 penetrates through a front member 9 having the other end connected to the leaf spring 2 via the connecting member 7 attached to a prospective surface on the hanging side of the latent door 26. In this embodiment, when the latent door 26 is closed, the latent door 26 of the closing member 21a attached to the lower end of the partition 21 is projected. End piece 21 attached to side end
b is in contact with the concave portion 21c. When the closing member 21a on the partition 21 side moves up and down in conjunction with a lock mechanism, the rod 4
1b, it is pushed by the protrusion 21d, and comes out of the front member 9 provided on the hanging side of the latent door 26. In addition, a roller 4a is provided at the tip of the rod 4 in order to smoothly perform the retracting operation by contact with the end piece 21a.

The operation of the closing device 1 having the above structure will be described below.

First, after each partition 21 to 24 is moved to a predetermined position, a crank handle (not shown) mounted on a lock operation portion 29 provided on the entire surface of each partition 21 to 24 is operated to rotate the lock (not shown). When the mechanism operates and the partitions 21 to 24 are fixed at that position, the closing members 21a to 24a project downward in conjunction with this to close the gap between the floor members 28.

Then, as shown in FIG. 1 (b) and FIG. 4 (b) which is an enlarged view of FIG. 1 (b), the end piece 21b attached to the closing member 21a on the partition 21 side also moves downward, The protrusion 21d formed on the end piece 21b presses the rod 4 projecting from the front member 9 at the hanging side end of the latent door 26 to the left in the drawing, and the rod 4 is retracted.

As a result, the leaf spring 2 which is fixed to the latent door 26 by the spring stopper 5 at one end and is connected to the rod 4 via the connecting member 7 at the other end is bent downward. The closing member 3 connected to the central portion of the leaf spring 2 projects downward through the lower end of the latent door 26 and the floor surface 28 as shown by the phantom line in FIG. And the gap formed between them is closed, so that sound insulation and airtightness can be ensured.

In this state, when the latent door 26 is opened,
The rotation of the door 26 and the end piece 2
1b, the interval between the projection 21d and the leaf spring 2b is increased.
The elastic member extends linearly due to its elasticity, and the closed state is released when the closing member 3 is retracted, so that the latent door 26 can be opened and closed smoothly.

When the door 26 is closed, FIG.
4 (a) and FIG. 4 (a), when the rod 4 again comes into contact with the projection 21d of the end piece 21b, the leaf spring 2 bends downward, and the closing member 3 connected to the leaf spring 2 is moved. It protrudes downward to be in a closed state.

At this time, since the leaf spring 2 is attached to the hanging side from the center of the latent door 26, the position of the closing member 3 near the hanging side is pressed downward, and the load is reduced. Since the closing member 3 is biased toward the hanging side, the closing member 3 comes into contact with the floor surface 28 from the hanging side, so that the sliding distance on the door side is reduced and the load on the door side is reduced. Because of this reduction, the opening and closing of the latent door 26 becomes smooth, and the wear and breakage of the closing member 3 can be reduced.

When the movable partition 21 is moved, the locked state of the partition 21 is released by reversing the operation of the crank handle in a state in which the latent door 26 is closed, and at the same time, the closing member 21a rises. As a result, as shown in FIGS. 1 (a) and 4 (a), the rod 4 separates from the projection 21d of the end piece 21b and comes into contact with the concave portion 21c. The member 3 is lifted, the closed state is released, and the member 3 becomes movable.

The closing device 1 attached to the latent door 27 of the partition 22 has the same structure and operates in exactly the same manner.

In this embodiment, an example is shown in which the door closing device 1 is mounted on the hidden door 26 of the movable partition 21. However, the door closing device according to the present invention is not limited to such a hidden door, but also includes an entrance. Needless to say, the present invention can be applied to a door, an indoor door leading to an adjacent room, a corridor, and the like.

Further, the leaf spring 2 has been exemplified as the spring.
It is not necessarily limited to only a plate-shaped spring, and any rod-shaped spring such as a piano wire may be used as long as it bends downward in response to the retracting operation of the rod 4. Furthermore, the shape of the rod 4 as the protruding member is not particularly limited, and it is also possible to use a rod other than a rod.

[0033]

As described above, the door closing device according to the present invention has the above structure, in particular, a spring which presses down the closing member by bending downward so that the center of the bending is shifted from the center position in the width direction of the door. The structure is mounted so that it is located closer to the hanging side, so that a sufficient pressure-contact state with the floor surface can be ensured, without impairing the airtightness and sound insulation performance. Because the pushing force is applied to the position biased to the hanging side of the closing member, the closing member descends from the hanging side first and gradually comes into contact with the floor surface toward the door end side. In addition, the sliding distance of the closing member on the door tip side can be shortened, the door can be opened and closed smoothly, and an excellent effect of preventing wear and breakage of the closing member can be obtained. is there.

[Brief description of the drawings]

FIGS. 1 (a) and 1 (b) are cutaway front views of the vicinity of the lower end of a door, illustrating the structure and operation of a door closing device according to an embodiment of the present invention.

FIG. 2 is a front view showing the entire movable partition on which the door closing device shown in FIG. 1 is mounted.

FIG. 3A is a vertical sectional view of a movable partition shown in FIG. (B) It is sectional drawing which expands and shows the closing apparatus of the door in the hidden door shown in FIG. 3 (a).

FIGS. 4 (a) and (b) are enlarged views of the door closing device shown in FIGS. 1 (a) and (b), respectively.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 door closing device 2 leaf spring (spring) 3 closing member 4 rod (projecting member) 21 movable partition (door frame) 26 concealed door (door) 28 floor surface

Claims (1)

(57) [Scope of request for utility model registration] 1. A protruding member disposed on a side of a door frame that rotatably supports a door from a hanging side of the door, and a protruding member disposed along a lower end edge of the door and bent at one end. lower while being fixed to the door so as to be positioned on Tsumoto side toward the width direction of the center position of the center Gad a, is connected to the member out collision Te other end odor by retraction operation of the collision output member formed between the lower edge and the floor surface of the door in accordance with the retraction operation of the spring to deflect the side, is connected to a substantially central portion of the I field is vertically moved to Shin屈of the spring, butt out member A closing member that closes the gap to be closed, and the hanging side of the closing member interlocks with the retracting operation of the protruding member.
The door closing device, wherein the door moves down first .