JP5378126B2 - Opening and closing body fall prevention device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rational and economical fall prevention device capable of reliably preventing an opening/closing body such as a door from falling or abruptly dropping. <P>SOLUTION: This fall prevention device includes a support part having a first bearing and a second bearing which face each other at a distance, an opening/closing body which has a locking part corresponding to the support part and moves vertically to the support part, and a locking bar member which extends through the locking part of the opening/closing body positioned between the first bearing and the second bearing and engaged with the first bearing and the second bearing when the opening/closing body is held at a predetermined position in the vertical direction. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a fall prevention device for an opening / closing body such as a door, a door, or a window.

An opening / closing body that opens and closes an opening, such as a door for soundproofing (sound insulation), needs to have a high acoustic impedance or density in order to increase the soundproofing effect, and therefore the total weight of the door tends to be very large. There is.
In the case of a structure in which such a heavy door is moved up and down by a vertical movement device to open and close the opening, it is prevented from falling separately from the vertical movement device holding mechanism from the viewpoint of improving safety when holding the door in the raised position. A device (safety device) is incorporated.

Specifically, for example, when the door is positioned at the raised position, the support bar is positioned at the blocking position facing the left and right side portions of the lower surface of the door, and even if there is a failure in the holding mechanism, etc. Is provided with a so-called dropping device (safety device) configured to prevent a sudden drop of the door by supporting the lower surface of the door.
The support bar of the dropping device is configured to turn in advance from a blocking position to a non-blocking position (a avoidance position that does not hinder the lowering) when the door is normally lowered from the raised position.

  Patent Document 1 discloses a safety device that prevents the shutter from descending by protruding into a guide rail groove that guides the vertical movement of the shutter so that the stopper becomes an obstacle and abuts against the lower surface of the shutter. ing.

Japanese Utility Model Publication No. 5-42597

In the case of a safety device that contacts the lower surface of the above-mentioned conventional opening / closing body (door, shutter, etc.) and supports from below, since the restraint of the opening / closing body is only in the downward direction, it cannot cope with the behavior of other opening / closing bodies, There is much room for improvement from the perspective of certainty.
In the case of the above-described conventional device, although it can be easily and inexpensively constructed with a cantilever structure, there is room for further improvement from the viewpoint of durability and reliability associated with the increase in weight of the opening / closing member.
Further, in the case of the above-described conventional device, because the structure portion is unavoidably exposed to the outside due to the structure that supports the lower side of the opening / closing body, illegal acts such as tampering performed by a malicious third party and the aesthetics of the device. From this point of view, there is still room for improvement.

  An object of the present invention is to provide a reasonable and economical fall prevention device having high durability and high reliability in order to eliminate such a conventional disadvantage from a new viewpoint.

In order to solve the above-described problem, the fall prevention device according to the first aspect of the present invention includes:
A support portion having a first bearing and a second bearing that are spaced apart from each other;
An opening / closing body having a locking portion corresponding to the support portion and moving in the vertical direction with respect to the support portion;
When the opening / closing body is held at a predetermined position in the up-down direction, a cannula member that penetrates the engaging portion of the opening / closing body located between the first bearing and the second bearing and engages with the first bearing and the second bearing When,
Only including,
The cannula member is characterized by penetrating through the first bearing and / or the second bearing when engaged .

The fall prevention device according to the second aspect of the present invention is the first aspect,
It further includes a drive device that moves the cannula member forward from a position engaging only with the first bearing to a position engaging with the second bearing through a position penetrating the locking portion.

The fall prevention device according to the third aspect of the present invention is the second aspect,
The drive device is characterized in that the cannula member moves backward from a position engaging with the second bearing to a position engaging only with the first bearing through a position not penetrating the locking portion.

The fall prevention device of the 4th mode of the present invention is any one of the 1st mode-the 3rd mode,
The kanuki member has a substantially straight shape.

The fall prevention device of the fifth aspect of the present invention is any one of the first to fourth aspects.
The first bearing, the second bearing, and the locking portion are substantially aligned in a line at the time of the penetration.

The fall prevention device of the sixth aspect of the present invention is any one of the first to fifth aspects.
The cannula member is characterized by substantially linearly penetrating the first bearing, the locking portion, and the second bearing in this order.

The fall prevention device of the seventh aspect of the present invention is any one of the first to sixth aspects.
The kanuki member has a shape portion for preventing detachment of the kanuki member in a region facing the engaging portion at the time of penetration.

The fall prevention device according to the eighth aspect of the present invention is the seventh aspect,
The shape part includes a circumferential groove.

The fall prevention device of the ninth aspect of the present invention is any one of the first to eighth aspects.
The opening / closing body is a soundproof door.

  The conventional inconvenience can be eliminated, and the opening / closing body can be safely and reliably avoided from falling or suddenly descending. In addition, a device having a simple structure and excellent aesthetics can be provided to the market at a low cost.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto.
First, referring to FIGS. 1 and 2, the soundproof door 1 (hereinafter referred to as a door) according to the present embodiment freely closes / insulates a rectangular opening (entrance / exit) 5 for communication provided in a partition wall 3 that partitions the interior and the exterior. It has a rectangular surface shape that is slightly larger than the corresponding one.

A space for completely accommodating the ascending door 1 is provided inside the partition wall 3 above the door 1, and a vertical movement device 7 for raising and lowering the door is provided in the space. .
End portions of a pair of pulling members 9 (for example, a chain, a wire, etc.) extending from the vertical movement device 7 are respectively connected to left and right symmetrical positions (two places) on the upper surface of the door 1.
A guide structure 11 for smoothly guiding the vertical movement of the door 1 is provided at the partition 3 portions facing the doors 1 on both the left and right sides of the door 1. What is indicated by a broken line portion outside the guide structure 11 is a column 13 inside the partition wall 3.

  The door 1 is closed by closing and opening the opening 5 by the winding and unwinding of the pulling member 9 by the vertical movement device 7, that is, a lowered position (solid line position in FIG. 1), and an open position that opens the opening 5, that is, an elevated position ( 1 is controlled so as to move up and down. The door 1 is held at each of the lowered position and the raised position by stopping (holding) the winding operation.

On the lower surface of the vertical movement device 7, a fall prevention device 15 is provided for preventing the door 1 held in the raised position from dropping or (suddenly) dropping due to accidental or erroneous operation.
As can be understood from FIG. 3, the fall prevention device 15 includes a U-shaped bracket 19 provided with bearings 17 (first bearing 17 a and second bearing 17 b) on each of the opposing leg portions, and the first bracket 19. A round bar-shaped cannula member 21 that is normally supported in a penetrating manner in one bearing 17a, and a drive unit 23 that linearly advances and retracts the cannula member 21 in the longitudinal direction (direction perpendicular to the paper surface / door surface in FIG. 1). (For example, an electric cylinder).

  As shown in FIG. 4, the bracket 19 is bolted to the lower surface of the vertical movement device 7. Similarly, the driving device 23 is bolted to the lower surface of the vertical movement device 7 as shown in FIG.

  The kanuki 21 member includes a retracted position (standby position shown in FIG. 3) that is supported in a state of penetrating through one bearing 17 (first bearing 17 a) of the bracket 19, and the other bearing 17 (second bearing 17 b) of the bracket 19. ) Is also driven so as to advance and retreat between a forward position (actuated position shown in FIG. 6) supported in a state of penetrating through.

In the bearing 17 (17a and 17b), at least a portion where the kanuki member 21 penetrates (slides) is formed of a wear-resistant self-lubricating material (oil-containing) or a material that does not require lubrication.
In order to facilitate the insertion of the cannula member 21 into the bearing 17, the tip of the cannula member 21 is tapered, and the through hole entrance portion of the bearing 17 is correspondingly chamfered. .

  Incidentally, an L-shaped flange 25 is provided on the upper surface of the door 1 as shown in FIG. A through hole 25 a having an inner diameter that is slightly larger than the outer diameter of the cannula member 21 is formed in the upper portion of the flange 25.

  As shown in FIGS. 8 and 9, when the door 1 is located at the raised position, the flange 25 has a through hole 25 a of the flange 25 and both bearings 17 a and 17 b (through holes) aligned in a row. It is bolted to a predetermined position on the upper surface of the door 1 so that forward movement (FIG. 9) and backward movement (FIG. 8) are not hindered.

Hereinafter, the operation and action of the present embodiment having the above-described novel and novel characteristic configuration will be briefly described.
First, the door 1 is moved upward in the vertical direction from the closed position (down position) where the opening 5 is closed to the open position (up position) where the opening 5 is opened by the winding operation of the pulling member 9 in the vertical movement device 7. Driven.

  When the door 1 reaches the raised position as shown in FIG. 8, the cannula member 21, the first bearing 17a, the through hole 25a of the flange 25, and the second bearing 17b are aligned on a horizontal straight line.

  Next, the safety device (fall prevention device 15) is activated. In other words, the drive device 23 causes the cannula member 21 to advance from a position slightly protruding from the first bearing 17a (standby position) as shown in FIG. 8 and penetrate the through hole of the flange 25 (at the top of the door 1). Then, it further advances and stops (operating position) through the second bearing 17b as shown in FIG.

  In this operating position state (FIG. 9), even if an unexpected situation occurs, for example, if the traction member 9 breaks, it is firmly supported by the first bearing 17a and the second bearing 17b in a double-supported manner. Since the cannula member 21 penetrates the flange 25 (the through hole 25a) of the door 1, it is possible to safely and reliably prevent or avoid the subsequent drop (rapid drop) of the door 1.

In other words, since the closed ring (ring) made up of the bracket 19, the bearings 17a, 17b, and the cannula member 21 passes through the through hole 25a of the flange 25, the flange 25 and therefore the door 1 are omnidirectional. Can be restrained.
For this reason, the certainty and reliability of the safety device itself are improved, and therefore the certainty and reliability of comprehensive fall prevention / prevention of sudden drop are drastically improved.

  In addition, when the fall prevention device 15 (safety device) is operated, as a means for continuously holding the position of the kanuki member 21 passing through the through hole 25a of the flange 25, It is conceivable to devise the shape.

For example, as shown in FIG. 10, a circumferential groove 21 a extending in the circumferential direction is formed on the surface portion of the cannula member 21 corresponding to the flange 25.
According to this configuration, the door 1 is likely to fall or suddenly drop, and therefore, when the flange 25 is slightly lowered and engaged with the cannula member 21, the flange 25 is fitted into the circumferential groove 21a of the cannula member 21. . Thereby, the retreat (disconnection) of the cannula member 21 can be prevented reliably.

  Instead of the configuration in which the circumferential groove 21a is provided, for example, a configuration in which a protrusion (not shown) for preventing the removal of the kanuki member is provided on the surface of the kanuki member corresponding to the forward position beyond the flange 25 is conceivable. Or the structure which makes the whole or a main part of a cannula member taper taper shape (not shown), and prevents the cannula member 21 from detaching can be considered.

  Thus, the present invention is not limited to the above-described embodiment, and various modifications and variations can be made within the scope of the present disclosure.

For example, various motors (DC motors, pulse motors, etc.), electromagnetic solenoids, pneumatic or hydraulic cylinders, etc. can be employed as the drive unit of the drive device 23 of the cannula member 21.
Various members including a ball or roller type can be adopted as the bearing of the bracket.
Although the through hole of the flange is closed in this embodiment, a member having an open hole, that is, a hook-shaped or U-shaped member can be employed.
Although the flange is embodied as a separate element from the door, a part of the door can function as a flange.

In the present embodiment, the fall prevention devices are provided symmetrically at two places on the left and right with respect to the center of the door (that is, two units), but from the viewpoint of minimum fall prevention, there is only one place (one unit). Or three or more units can be provided.
About the position which provides a fall prevention apparatus, it can provide not only on the upper surface of a door but on the side surface or lower surface of a door, and can also provide asymmetrically.

The opening / closing body in the present invention is not limited to the soundproof door of the above-described embodiment, and can include various things. That is, the following shutters can be exemplified as the application target of the present invention.
(A) Shutter that connects long strip-shaped slats (armor) up and down (b) Panel shutter that connects panels (c) Screen shutter that opens and closes sheets made of cloth / resin, etc. (d) Blind function of slats (E) Overhead door with door body sliding along the ceiling

  As described above, the kanuki member of the present embodiment moves forward and backward in a direction perpendicular to the door surface of the soundproof door (the paper surface in FIG. 1), that is, in the thickness direction of the soundproof door. However, the present invention is not limited to this. For example, the soundproof door can be configured to advance and retreat in the width direction (the left-right direction of the door surface of the soundproof door in FIG. 1). However, the direction is not limited to these. In short, according to the present invention, it can be configured to move forward and backward in a direction in which it can function as a cannula member.

It is a front view of the soundproof door of the embodiment of the present invention. FIG. 2 is a side view of the vertical movement device and the fall prevention device viewed from the direction of the arrow along the line II-II in FIG. 1. It is a detailed side view of a fall prevention device. It is a figure which shows the bracket seen from the arrow direction along the IV-IV line of FIG. It is the rear view of the drive device seen from the arrow direction along the VV line of FIG. It is a side view of a kanuki member located in an advance position. It is a figure which shows the flange seen from the arrow direction along VII-VII of FIG. It is a figure which shows the relationship between the door located in a raise position, and a fall prevention apparatus. It is a figure which shows the relationship between a cannula member and a door when it is located in an operation position. It is a figure which illustrates the prevention structure of a kanuki member.

DESCRIPTION OF SYMBOLS 1 (Soundproof) Door 3 Bulkhead 5 Opening 7 Vertical movement device 9 Pulling member 11 Guide structure 13 Support column 15 Fall prevention device 17 Bearing 17a First bearing 17b Second bearing 19 Bracket 21 Cannula member 21a Circumferential groove 23 Drive device 25 Flange 25a Through hole

Claims (9)

A support portion having a first bearing and a second bearing that are spaced apart from each other;
An opening / closing body having a locking portion corresponding to the support portion and moving in the vertical direction with respect to the support portion;
When the opening / closing body is held at a predetermined position in the up-down direction, a cannula member that penetrates the engaging portion of the opening / closing body located between the first bearing and the second bearing and engages with the first bearing and the second bearing When,
Only including,
The cannula member penetrates through the first bearing and / or the second bearing when engaged with the first bearing and / or the second bearing . The fall prevention device according to claim 1,
A fall prevention further comprising a drive device for moving the cannula member forward from a position engaging only with the first bearing to a position engaging with the second bearing through a position penetrating the locking portion. apparatus. The fall prevention device according to claim 2,
The drive device moves the cannula member backward from a position engaging with the second bearing to a position engaging only with the first bearing through a position not penetrating the locking portion. . The fall prevention device according to any one of claims 1 to 3 ,
The cannula member has a substantially straight shape, and the fall preventing device is characterized in that The fall prevention device according to any one of claims 1 to 4 ,
The first and second bearings and the locking portion are substantially aligned in a single line at the time of the penetration. The fall prevention device according to any one of claims 1 to 5 ,
The cannula member penetrates the first bearing, the locking part, and the second bearing substantially linearly in this order. In the fall prevention device according to any one of claims 1 to 6 ,
The kanuki member has a shape portion for retaining the kanuki member in a region facing the engaging portion at the time of penetration. The fall prevention device according to claim 7 ,
The shape preventing portion includes a circumferential groove, and the fall preventing device is characterized in that the shape portion includes a circumferential groove. In the fall prevention device according to any one of claims 1 to 8 ,
The fall prevention device, wherein the opening / closing body is a soundproof door.

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