JP3519606B2 - Windscreen door - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a windshield in a store, office, etc., between an entrance, which is an entrance to the outside, and a main room, such as a display room of the store. The present invention relates to a door for a windshield arranged to open and close an entrance between a windshield and a main room when a room is provided. 2. Description of the Related Art In a store installed in an area where a strong wind or a temperature difference is likely to occur, such as a cold region, a store main room where products are displayed and an entrance which is an entrance of a building. A windshield room is provided in the store, and the user enters and exits the store main room through the windshield room. The door for the windshield room that opens and closes the doorway between the windshield room and the store main room is usually a free-opening type that is not engaged with the doorway, and is urged to always close the doorway. I have. [0003] In such a store, when the entrance door is opened and the user enters and exits the windshield room, even if wind is blown into the windshield room, the door for the windshield room is used to enter the door between the windshield room and the store main room. Is closed, so that wind is prevented from blowing into the main room of the store. [0004] The free-opening door for the windshield provided at the entrance between the windshield and the store main room is always urged to be in a closed state. If a strong wind blows into the windshield when the entrance door is opened, the strong wind may open the freely openable windshield door. When the door for the windshield room is opened, since the wind is blown into the main room of the store, the air in the main room of the store flows, so that there is a problem that dust or the like flies up and the room temperature fluctuates. [0005] The present invention has been made to solve such a problem, and its object is to prevent the wind from entering the windshield room.
An object of the present invention is to provide a door for a windshield that can prevent the wind from entering a store or the like from the windshield as much as possible. SUMMARY OF THE INVENTION A windshield door according to the present invention opens and closes a doorway between a main room and a main room such as a store or office. A door for a free-opening windshield room that is urged to always close its entrance, and an opening prevention mechanism is provided at a lower end portion of a side edge rotated into the main room. Nari, this
The opening prevention mechanism of the
Jigs are placed in this housing, from the windshield
Allow airflow to pass through the main room,
A valve body that prevents the passage of airflow is provided,
Each opening end of the jing is formed by an end surface having a plurality of openings.
It is characterized by being covered . Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing an embodiment of a door for a windshield according to the present invention, and FIG. 2 is a plan view of the windshield in which a door 10 for the windshield is arranged. As shown in FIG. 2, the windshield room 22 is, for example, an entrance 2 in a store.
3 and the store main room 24, and enters and exits the store main room 24 through the windshield room 22. The windshield room door 21 is provided with an entrance 25 provided in a partition wall 25 that partitions the windshield room 22 and the store main room 24.
a is opened and closed. Door for windshield 2
Numeral 1 is provided to face the entrance 23 which is opened and closed by the entrance door 26. One side edge along the vertical direction of the windshield door 21 is hinged to one side edge along the vertical direction of the entrance / exit 25a, and the other side along the vertical direction of the windshield door 21 The edge is configured to freely rotate toward the inside of the store main room 24 and the inside of the windshield room 22. The door 21 for the windshield
The entrance 25a is always urged to be closed, and is a free-open type that is not engaged with the entrance 25a. An opening prevention mechanism 1 is provided at the lower end of the side edge of the windshield room door 21 on the rotation side to prevent the windshield room door 21 from rotating into the store main room 24 due to strong wind.
0 is provided. FIG. 3 is a sectional view showing the opening prevention mechanism 10. The opening prevention mechanism 10 includes a cylindrical housing 11 disposed in a through hole 21 a that horizontally penetrates a lower end of the windshield chamber door 21, and a disc-shaped valve body 12 disposed in the housing 11. And
Each open end of the cylindrical housing 11 is covered with an end face 11d. In each end face portion 11d, a plurality of openings 11e extending in the horizontal direction are provided at equal intervals in the vertical direction. The outer peripheral edge of each end face portion 11d is formed in a flange shape extending over the entire outer peripheral side of the open end face of the through hole 21a. A pair of protruding portions 1 each protruding inward are formed on the upper inner peripheral surface of the housing 11 in the middle in the axial direction.
1b is provided. In addition, a stopper 11c is provided on the inner peripheral surface of the housing 11 and protrudes inward from a lower inner peripheral surface facing the projections 11b. The disc-shaped valve body 12 provided in the housing 11 is formed to have an outer diameter slightly smaller than the inner diameter of the housing 11, and each of the protrusions 11b and the stopper 11
In a state where it is abutted against c from the store main room 24 side,
It is arranged concentrically within the housing 11. Valve body 12
A protrusion 12a is provided on the upper part of the housing 11 so as to fit between a pair of protrusions 11b provided on the upper inner peripheral surface of the housing 11, and the protrusion 12a is horizontally installed between the protrusions 11b. The support shaft 13 is suspended in a suspended state. Therefore, the lower part of the valve body 12 is in a state where it can rotate around the support shaft 13 toward the inside of the store main room 24 from a state in which it hits the stopper 11c. A torsion spring 14 is disposed between the upper inner peripheral surface of the housing 11 and the side surface of the main body 24 of the valve body 12, so that the lower part of the valve body 12 always contacts the stopper 11c. Urges the valve element 12. In the windshield door 21 provided with such an opening prevention mechanism 10, the entrance door 26 is opened.
When the wind enters the windshield room 22, the air pressure in the windshield room 22 rises, and the windshield room door 21 is urged to rotate toward the store main room 24. However, at this time,
The air in the windshield room 22 passes through each opening 11e provided in the end face 11d inside the windshield room 21 in the opening prevention mechanism 10 provided in the lower part of the door 21 for the windshield room,
It enters the housing 11. The airflow that has entered the housing 11 is applied to the valve body 1 urged by the torsion spring 14.
2 is pressed against the store main room 24 side against the urging force of the coil spooling 14, and the lower part of the valve body 12 is rotated toward the store main room 24 side. Accordingly, the airflow passes through the housing 11 and flows into the store main room 24 from the openings 11e provided in the end surface 11d on the store main room 24 side. As a result, the air pressure in the windshield room 22 is reduced, and the windshield room door 21 is not rotated toward the store main room 24. Therefore, there is no possibility that a strong wind is blown into the store main room 24. There is no danger of dust rising in the store main room 24, the windshield room door 21 fluttering and making a deep sound, and the temperature in the store main room 24 lowering. The airflow passing through the opening prevention mechanism 10 is generated by an increase in the air pressure in the windshield 22.
It does not become a strong pressure like the wind entering the windbreak room 22, and therefore, there is no particular problem even if it enters the store main room 24. There is no possibility that large temperature fluctuations occur in the main chamber 24. On the other hand, when the air pressure in the store main room 24 rises, the airflow enters the housing 11, but the valve element 12 disposed in the housing 11 is moved by the torsion spring 14. Since the inside of the housing 11 is closed by contacting the stopper 11 c, the airflow that has entered the housing 11 is prevented from flowing into the windshield 22. As a result, the airtightness in the store main room 24 is maintained, and there is no possibility that the temperature in the store main room 24 fluctuates. As described above, the door for the windshield of the present invention is provided with an opening preventing mechanism at the lower end for allowing the airflow to pass from the windshield to the main chamber. The windshield door does not have to be opened even if the wind blows in.Therefore, if the strong wind blows into the main room, dust will fly up, and the windshield door will flutter and make an unpleasant sound. There is no risk of fluctuation. Also,
Since the opening prevention mechanism prevents the passage of the airflow from the main chamber to the windshield, the airtightness of the main chamber is maintained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an example of an embodiment of a windshield door according to the present invention. FIG. 2 is a plan sectional view of the windshield provided with the windshield door. FIG. 3 is a cross-sectional view of an opening prevention mechanism provided in a windshield door. DESCRIPTION OF SYMBOLS 10 Opening prevention mechanism 11 Housing 11b Protrusion 11c Stopper 11d End face 12 Valve 13 Support shaft 14 Torsion spring 21 Windscreen door 22 Windscreen 23 Entrance 24 Store main room

Claims (1)

(57) [Claims] [Claim 1] It is arranged so as to open and close an entrance to and from a main room such as a store or an office and a windbreak room provided between the entrance and the main room. This is a free-opening type windshield chamber door that is urged to always close the entrance, and an opening prevention mechanism is provided at the lower end of the side edge rotated into the main room.
Vignetting becomes, this opening prevention mechanism, c in the through hole penetrating in the horizontal direction
A housing is located in this housing,
Through the main room and into the windbreak room from the main room
A valve body that prevents the passage of airflow
Each open end of the housing has an end face with multiple openings
Thus , a door for a windshield, which is covered .