JP2020094415A - Door structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door structure capable of opening and closing an opening even in an emergency by simplifying an opening/closing structure.
A door structure (10) has a first wheel (23a) fitted in a first recess (12a) formed on an upper surface of a track (11) and a second wheel (23b) when the door body (21) is in a closed position. By fitting in the recess 12b, the door body 21 closes the hatch H and closes the hatch H, and when the door body 21 separates from the closed position, the first wheel 23a separates from the first recess 12a, When the second wheel 23b separates from the second recess 12b, the door body 21 separates from the hatch H to open the hatch H, and the first wheel 23a is configured to be unable to fit into the second recess 12b.
[Selection diagram] Figure 1

Description

The present invention relates to a door structure, and more particularly to a door structure that opens and closes an opening that opens upward.

Conventionally, there is known a door structure in which an opening that opens upward on a floor surface or the like is opened and closed by a door body (for example, refer to Patent Document 1). In the door structure described in Patent Document 1, the motor and the motor cylinder are connected to the lid body that is the door body, and the lid body opens and closes with respect to the opening portion by the expansion and contraction operation of the motor cylinder accompanying the driving of the motor. It is configured to do.

JP, 10-299333, A

In the case of a door structure having a complicated structure as in the above-mentioned patent documents, there is a possibility that the opening cannot be opened and closed in an emergency such as a malfunction of parts or loss of power source.

The present invention has been made in view of the above circumstances, and the problem to be solved by the present invention is to simplify the opening/closing structure, thereby making it possible to open/close the opening even in an emergency. Is to provide.

In order to solve the above problems, the present invention provides a door structure configured as follows.

(1) Two orbits that are provided in parallel, an opening that opens upward between the orbits, a rolling member that bridges the orbits and rolls on the orbits, A door body that is movable on the track by being fixed to a moving member, the door body opening and closing the opening by the door body, wherein the door body is the rolling member. Of the rolling member is displaceable between a closed position located above the opening and an open position retracted from above the opening. A pair of first wheels located on the side closer to the opening when located in, and a pair of second wheels located on the side far from the opening when the door body is located at the open position, When the door body is located at the closed position, the first wheel is fitted into a first recess formed on the track, and the second wheel is a second recess formed on the track. When the door body closes the opening and closes the opening, and the door body separates from the closed position, the first wheel separates from the first recess. When the second wheel is separated from the second recess, the door body is separated from the opening to open the opening, and the first wheel is configured to be unfittable in the second recess. The door structure.

(2) The rolling member includes a pair of third wheels on the side of the first wheel between the first wheel and the second wheel, and when the door body is located at the closed position. , The third wheel is fitted into a third recess formed on the track, the first wheel and the third wheel are supported by each other, so that the third recess does not fit into the second recess, The door structure according to (1), wherein the first wheel is supported by the third wheel and does not fit into the third recess.

(3) The door structure according to (1), wherein the first wheel is formed so as to have a width larger than that of the second recess so that the first wheel cannot be fitted into the second recess.

(4) The door structure according to any one of (1) to (3), wherein the track is formed so that the vicinity of the closed position is lower than the vicinity of the open position.

The door structure according to the present invention as described above has the following effects.

According to the configuration of (1), the opening and closing can be opened and closed even in an emergency by simplifying the opening and closing structure.

According to the configuration of (2), it is possible to simplify the opening/closing structure by supporting the first wheel by the third wheel and not fitting the first wheel into the second recess, and in an emergency. Can also open and close the opening.

According to the configuration of (3), it is possible to simplify the opening/closing structure by forming the first wheel to be wider than the second recess so that the first wheel does not fit into the second recess. The opening can be opened and closed even in an emergency.

According to the configuration of (4), the door body can be displaced from the open position to the closed position by utilizing its own weight.

The perspective view showing the door structure concerning a first embodiment. (A) is a side view showing the door structure in a state where the door body is located at the open position, and (b) is a side view showing the door structure when the first wheel is located above the second recess. (A) is a side view showing the door structure in a state where the third wheel is located above the second recess, and (b) is a side view showing the door structure in a state where the first wheel is located above the third recess. Fig. The side view which showed the door structure in the state where a door main body is located in a closed position. (A) is a side sectional view showing the door structure in a state immediately before the door body is located at the closed position, and (b) is a side sectional view showing the door structure when the door body is located at the closed position. The side view which shows the door structure which concerns on 2nd embodiment. The top view which shows the door structure which concerns on 3rd embodiment.

Hereinafter, the door structure 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5. The door structure 10 according to the present embodiment has two tracks 11 and 11 provided in parallel on the floor surface F, a hatch H that is an opening that opens upward between the tracks 11 and 11, and a hatch. And a hatch door 20 for opening and closing H. A packing 13 is provided around the hatch H. Since the door structure 10 has high performance of airtightness, watertightness, fire resistance, protection, etc., it is more suitable to be used in an environment where such high obstruction is required.

In this embodiment, the floor surface F is formed horizontally, but it is also possible to form the hatch H on an inclined surface. Further, the opening direction of the hatch H may be upward, and it is not always necessary to open it in the vertical direction. Further, in the present embodiment, the hatch H is formed in a rectangular shape in a plan view, but the shape may be circular or polygonal, and is not limited.

The hatch door 20 includes a door main body 21 spanned by the tracks 11 and 11, and a rolling member 23 fixed to the door main body 21 and rolling on the tracks 11. In the present embodiment, the track 11, the door body 21, and the rolling member 23 are made of metal such as steel.

As shown in FIG. 1, the door main body 21 is formed in a rectangular shape in a plan view, and the thickness in the vertical direction is larger than the width in the front-rear direction (longitudinal direction of the track 11) and the left-right direction (horizontal direction orthogonal to the track 11). It is formed in a small plate shape. A closing portion 22 for closing the hatch H is formed on the door body 21 so as to project downward. The closing part 22 is formed in a rectangular shape in a plan view. The hatch door 20 opens and closes the hatch H when the closing portion 22 of the door body 21 approaches or separates from the hatch H.

The hatch door 20 including the door main body 21 includes a closed position (see FIG. 4) located above the hatch H and an open position retracted from above the hatch H (see FIG. 1 and FIG. 1) by rolling of the rolling member 23. 2 (see FIG. 2A)).

As a configuration for displacing the hatch door 20, a power source such as a motor or an engine may be mounted on the hatch door 20, and the rolling member 23 may be rolled by this power source. It is also possible to connect a pulling member such as a wire or a chain to the hatch door 20 and pull the pulling member using the power source. With this configuration, in an emergency, the operator can manually pull the pulling member to open and close the hatch H only by human power.

As shown in FIGS. 1 to 5, the rolling member 23 includes a pair of left and right first wheels 23a, a second wheel 23b, and a third wheel 23c. As shown in FIG. 1, the first wheel 23a is located on the side closer to the hatch H when the door body 21 is located at the open position. As shown in FIG. 1, the second wheel 23b is located on the side far from the hatch H when the door body 21 is located at the open position. The third wheel 23c is located on the first wheel 23a side between the first wheel 23a and the second wheel 23b.

The track 11 is formed with a first recess 12a, a second recess 12b, and a third recess 12c at positions corresponding to the first wheel 23a, the second wheel 23b, and the third wheel 23c, respectively. ing. When the door body 21 is located at the closed position, the first wheel 23a fits into the first recess 12a and the second wheel 23b fits into the second recess 12b, as shown in FIGS. 4 and 5B. Then, the third wheel 23c is fitted into the third recess 12c. As a result, the door body 21 comes close to the hatch H, and the closing portion 22 comes into contact with the packing 13 to close the hatch H. In the door structure 10 according to the present embodiment, a portion of the track 11·11 on the opposite side of the first recess 12a of the hatch door 20 (a portion on the left side of the first recess 12a in FIG. 2) is the first wheel 23a. It is configured as a stopper higher than the other portions so as not to pass through the one recess 12a.

On the other hand, when the door main body 21 is separated from the closed position, the first wheel 23a separates from the first recess 12a and the second wheel 23b moves, as shown in FIGS. 1 to 3 and FIG. 5(a). The third wheel 23c separates from the second recess 12b, and the third wheel 23c separates from the third recess 12c. As a result, the door body 21 is separated from the hatch H, the closing portion 22 is separated from the packing 13, and the hatch H is opened.

In the door structure 10 according to the present embodiment, the first wheel 23a is configured so that it cannot be fitted into the second recess 12b. Specifically, as shown in FIG. 2B, when the first wheel 23a is located above the second recess 12b, the first wheel 23a is supported by the third wheel 23c so that the first wheel 23a moves toward the second recess 12b. Do not fit in. On the other hand, as shown in FIG. 3A, when the third wheel 23c is located above the second recess 12b, the third wheel 23c is fitted into the second recess 12b by being supported by the first wheel 23a. do not do. Similarly, as shown in FIG. 3B, even when the first wheel 23a is located above the third recess 12c, the first wheel 23a is supported by the third wheel 23c, so that the first wheel 23a moves into the third recess 12c. Do not fit.

In the door structure 10 according to the present embodiment, the hatch H can be opened and closed even in an emergency by simplifying the opening and closing structure as described above. Specifically, since the hatch H can be opened and closed simply by displacing the hatch door 20 on the tracks 11, 11, the hatch H cannot be opened or closed due to a malfunction of parts or the like. Further, in the present embodiment, even in an emergency such as when the power source is lost, the hatch door 20 can be manually displaced on the track 11.11 so that the hatch H can be opened and closed. .. That is, the door structure 10 according to the present embodiment can open and close the opening even in an emergency by simplifying the opening and closing structure.

According to the door structure 10 according to the present embodiment, as shown in FIGS. 2(b), 3(a), and 3(b), the first wheel 23a and the third wheel 23c are other than the corresponding recesses. When they are located above the concave portion, they are supported by each other so that the respective wheels do not fit. With this configuration, the opening/closing structure of the door structure 10 is simplified and the hatch H can be opened/closed even in an emergency.

Next, the door structure 110 according to the second embodiment of the present invention will be described with reference to FIG. Also in the door structure 110 according to the present embodiment, similar to the door structure 10 according to the first embodiment, two tracks 111 provided in parallel on the floor surface F, and upward between the tracks 111. A hatch H that is an opening that opens, and a hatch door 120 that opens and closes the hatch H are provided. A packing 113 is provided around the hatch H.

The hatch door 120 includes a door main body 121 that spans the track 111, and a rolling member 123 that is fixed to the door main body 121 and rolls on the track 111. The door body 121 is formed with a closing portion 122 for closing the hatch H so as to project downward. The hatch door 120 opens and closes the hatch H when the closing portion 122 of the door body 121 approaches or separates from the hatch H.

The hatch door 120 including the door body 121 is provided between a closed position located above the hatch H and an open position retracted from above the hatch H (see FIG. 6) by rolling of the rolling member 123. It is supposed to be displaceable.

As shown in FIG. 6, the rolling member 123 includes a pair of a first wheel 123a, a second wheel 123b, and a third wheel 123c, respectively. As shown in FIG. 6, the first wheel 123a is located on the side closer to the hatch H when the door body 121 is located at the open position. As shown in FIG. 6, the second wheel 123b is located on the side far from the hatch H when the door body 121 is located at the open position. The third wheel 123c is located on the first wheel 123a side between the first wheel 123a and the second wheel 123b.

On the track 111, a first recess 112a, a second recess 112b, and a third recess 112c are formed at positions corresponding to the first wheel 123a, the second wheel 123b, and the third wheel 123c, respectively. .. When the door body 121 is located at the closed position, the first wheel 123a fits in the first recess 112a, the second wheel 123b fits in the second recess 112b, and the third wheel 123c fits in the third recess 112c. Fit in. As a result, the door body 121 approaches the hatch H, and the closing portion 122 contacts the packing 113 to close the hatch H. In the door structure 110 according to the present embodiment, the portion of the track 111, 111 on the opposite side of the hatch door 120 with respect to the first recess 112a (the portion on the left side of the first recess 112a in FIG. 6) is the first wheel 123a. It is configured as a stopper higher than other portions so as not to pass through the one recess 112a.

On the other hand, when the door body 121 separates from the closed position, as shown in FIG. 6, the first wheel 123a separates from the first recess 112a, the second wheel 123b separates from the second recess 112b, and the third wheel 123c separates from the third recess 112c. As a result, the door body 121 is separated from the hatch H, the closing portion 122 is separated from the packing 113, and the hatch H is opened.

In the present embodiment, the track 111 is formed such that the vicinity of the closed position where the door body 121 is located above the hatch H is lower than the vicinity of the open position where the door body 121 is retracted from above the hatch H. There is. In detail, as shown in FIG. 6, in the door structure 110, a hatch H is formed on the left side of the drawing, and the track 111 is formed so that the right side of the drawing is higher than the left side of the drawing.

According to the door structure 110 according to the present embodiment, the hatch door 120 including the door body 121 can be displaced by using the weight of the hatch door 120. That is, the rolling member 123 can be rolled using the potential energy of the hatch door 120 located at the open position to displace the hatch door 120 to the closed position. Therefore, when the worker manually pulls the wire or the chain in an emergency, the hatch H can be easily closed only by human power.

Next, the door structure 210 according to the third embodiment of the present invention will be described using FIG. 7. Also in the door structure 210 according to the present embodiment, similarly to the door structure 10 according to the first embodiment, between the two tracks 211, 211 provided in parallel on the floor surface F and the tracks 211, 211. A hatch H that is an opening that opens upward and a hatch door 220 that opens and closes the hatch H are provided. A packing 213 is provided around the hatch H. The tracks 211, 211 in this embodiment are formed in a groove shape into which a rolling member 223 described later can be inserted.

The hatch door 220 includes a door main body 221 spanned by the tracks 211 and 211, and a rolling member 223 fixed to the door main body 221 and rolling on the track 211. A closing portion 222 for closing the hatch H is formed in the door body 221 so as to project downward. The hatch door 220 opens and closes the hatch H when the closing portion 222 of the door body 221 approaches or separates from the hatch H.

The hatch door 220 including the door body 221 is provided between the closed position located above the hatch H and the open position retracted from above the hatch H (see FIG. 7) by rolling of the rolling member 223. It is supposed to be displaceable.

As shown in FIG. 7, the rolling members 223 each include a pair of first wheels 223a and second wheels 223b. As shown in FIG. 7, the first wheel 223a is located closer to the hatch H when the door body 221 is located at the open position. As shown in FIG. 7, the second wheel 223b is located on the side far from the hatch H when the door body 221 is located at the open position. In the present embodiment, as shown in FIG. 7, the first wheel 223a is formed wider than the second wheel 223b.

A first recess 212a and a second recess 212b are formed on the tracks 211 and 211 at positions corresponding to the first wheel 223a and the second wheel 223b, respectively. The first recess 212a and the second recess 212b are formed corresponding to the widths of the first wheel 223a and the second wheel 223b. That is, as shown in FIG. 7, the first recess 212a is formed wider than the second recess 212b.

Then, when the door body 221 is located at the closed position, the first wheel 223a fits into the first recess 212a and the second wheel 223b fits into the second recess 212b. As a result, the door body 221 approaches the hatch H, and the closing portion 222 abuts the packing 213 to close the hatch H.

On the other hand, when the door body 221 separates from the closed position, the first wheel 223a separates from the first recess 212a and the second wheel 223b separates from the second recess 212b, as shown in FIG. 7. As a result, the door body 221 is separated from the hatch H, and the closing portion 222 is separated from the packing 213 to open the hatch H.

In the door structure 210 according to this embodiment, the first wheel 223a is formed to have a width larger than that of the second recess 212b. Accordingly, even when the first wheel 223a is located above the second recess 212b, the first wheel 223a does not fit into the second recess 212. That is, the first wheel 223a is configured so that it cannot be fitted into the second recess 212b. As described above, in the door structure 210 according to the present embodiment, the first wheel 223a does not fit into the second recess 212b, so that the opening/closing structure can be simplified and the hatch H can be used even in an emergency. Can be opened and closed.

Also in this embodiment, the track 211 is formed so that the vicinity of the closed position where the door body 221 is located above the hatch H is lower than the vicinity of the open position where the door body 221 is retracted from above the hatch H. It is possible to Thereby, the hatch door 220 including the door body 221 can be displaced by using the weight of the hatch door 220.

10 Door structure (first embodiment)
11 orbit 12a first recess
12b Second recess 12c Third recess
13 packing 20 hatch door
21 Door body 22 Closure part
23 Rolling Member 23a First Wheel
23b Second wheel 23c Third wheel
F Floor H Hatch (opening)
110 Door structure (second embodiment)
111 orbit 112a first recess
112b Second recess 112c Third recess
113 packing 120 hatch door
121 Door body 122 Closure part
123 Rolling Member 123a First Wheel
123b Second wheel 123c Third wheel
210 Door Structure (Third Embodiment)
211 Track 212a First recess
212b Second recess 213 Packing
220 Hatch door 221 Door body
222 Blocking portion 223 Rolling member
223a first wheel 223b second wheel

Claims (4)

Two orbits provided in parallel, an opening that opens upward between the orbits, a door main body laid over the orbit, and fixed on the door main body to roll on the orbit A door structure that includes: a rolling member, wherein the door body is displaced on the track by the rolling of the rolling member to open and close the opening.
The door main body is displaceable between a closed position located above the opening and an open position retracted from above the opening by rolling of the rolling member,
The rolling member includes a pair of first wheels located on a side closer to the opening when the door body is located at the opening position, and from the opening when the door body is located at the opening position. A pair of second wheels located on the far side,
When the door body is located at the closed position, the first wheel fits into the first recess formed on the track, and the second wheel fits into the second recess formed on the track. By doing so, the door body closes the opening and closes the opening,
When the door body separates from the closed position, the first wheel separates from the first recess, and the second wheel separates from the second recess, whereby the door body separates from the opening. Apart to open the opening,
The door structure is configured such that the first wheel cannot be fitted into the second recess. The rolling member includes a pair of third wheels on the side of the first wheel between the first wheel and the second wheel,
When the door body is located at the closed position, the third wheel fits into the third recess formed on the track,
The first wheel and the third wheel are mutually supported, so that they do not fit into the second recess,
The door structure according to claim 1, wherein the first wheel is supported by the third wheel and does not fit into the third recess. The door structure according to claim 1, wherein the first wheel has a width larger than that of the second recess so that the first wheel cannot be fitted into the second recess. The door structure according to any one of claims 1 to 3, wherein the track is formed so that the vicinity of the closed position is lower than the vicinity of the open position.

Images