door

Abstract

To provide a door with a contact surface that is less likely to be damaged. [Solution] The door 20 comprises a door body 21 and a stopper device 22. The stopper device 22 is provided on the door body 21 and stops the door body 21 at any position. The stopper device 22 comprises a bag 31 and a pump 32. The bag 31 is expandable and retractable. The pump 32 is configured to perform an injection operation to inject fluid into the bag 31. The bag 31 expands when fluid is injected and comes into contact with the floor surface F, which is the contact surface.

Description

Technical Field

[0001] This disclosure relates to a door.

Background Art

[0002] Patent Document 1 discloses a stopper device for stopping a door at an arbitrary position. The stopper device has a stopper shaft that can enter and exit with respect to the lower surface of the door. When the stopper shaft contacts the floor surface, the opening and closing operation of the door is restricted, so the door can be stopped.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the stopper shaft is in contact with the floor surface, for example, when a strong wind blows or a person hits the door, if a force is applied to the door, the stopper shaft may damage the floor surface.

Means for Solving the Problems

[0005] (1) The door that solves the above problems includes a door body and a stopper device provided on the door body for stopping the door body at an arbitrary position. The stopper device has an expandable and contractible bag body and a pump configured to enable an injection operation of injecting a fluid into the bag body. The bag body contacts the floor surface or the ceiling surface as a contact surface by expanding when the fluid is injected.

[0006] In this configuration, when the fluid is injected, the expanded bag comes into contact with the contact surface, creating frictional resistance between the bag and the contact surface, thereby restricting the opening and closing of the door body. Consequently, the door body can be stopped.

[0007] Because fluid is injected into the bag, the bag remains soft even when expanded. Therefore, when the door body is stopped due to the expanded bag contacting the contact surface, even if force is applied to the door body, the contact surface is less likely to be damaged.

[0008] (2) In the door described in (1) above, the pump is configured to perform a discharge operation to discharge the fluid from the bag, and the bag contracts as the fluid is discharged, thereby becoming non-contact with the contact surface. With this configuration, when the fluid is discharged, the bag shrinks and no longer contacts the contact surface, allowing the door body to be opened and closed. Therefore, the door body, which was previously stopped at any position, can be opened and closed.

[0009] (3) In the door described in (1) or (2) above, the stopper device further includes a stopper operating unit which is operated by the user when stopping the door body, and a stopper driving unit which causes the pump to perform the injection operation when the stopper operating unit is operated. With this configuration, the user can stop the door by operating the stopper control unit.

[0010] (4) In the door described in (3) above, the stopper operating part is a lever that is pushed down by the user when stopping the door body, the pump has a cylinder tube connected to the bag body and filled with the fluid, a piston provided inside the cylinder tube, and a piston rod extending from the piston, the stopper drive unit has a first rack on which the stopper operating part is provided, a second rack connected to the first rack via a gear, and a connecting member that connects the second rack and the piston rod and is rotatable around an axis.

[0011] In this configuration, when the user pushes down the stopper operating part, the first rack descends. As the first rack descends, the gear rotates, causing the second rack to rise. As the second rack rises, the part of the connecting member located on the second rack side of the shaft rises, while the part of the connecting member located on the piston rod side of the shaft descends. As the part of the connecting member located on the piston rod side of the shaft descends, the piston rod pushes the piston. This causes the piston to push out the fluid in the cylinder tube. Therefore, fluid can be injected into the bag.

[0012] (5) The door in (4) above may be equipped with a locking device that locks the door when the stopper operating part is pressed down. With this configuration, even if the user stops operating the stopper control unit, the stopper control unit remains pressed down, thus maintaining the state in which fluid is injected into the bag.

[0013] (6) In the door described in (5) above, the locking device comprises a knock cam mechanism, a locking piece connected to the rotor of the knock cam mechanism, and a mechanism drive unit that presses the knocking member of the knock cam mechanism when the stopper operating unit is pushed down, and each time the stopper operating unit is pushed down, it alternately switches between a locked state in which the locking piece is inserted into a notch provided in the first rack and an unlocked state in which the locking piece is not inserted into the notch.

[0014] With this configuration, the user can easily switch the locking device between the locked and unlocked states.

[0015] (7) In any one of the doors described in (3) to (6) above, the stopper operating part protrudes from both sides in the thickness direction of the door body. With this configuration, the user can operate the stopper control from either side in the thickness direction of the door body.

[0016] (8) In any one of the doors described in (1) to (7) above, the fluid is a fire extinguishing liquid and is equipped with a bursting device that bursts the bag into which the fire extinguishing liquid has been injected. With this configuration, in the event of a fire, the bag can be ruptured by the bursting device, dispersing the fire-extinguishing liquid contained within the bag around the door. Therefore, the spread of fire across the opening through which the door is installed can be suppressed.

[0017] (9) In the door described in (8) above, the bursting device comprises a needle for bursting the bag, a holding member capable of holding the needle above the bag, and a bursting operation unit operated by the user, wherein when the bursting operation unit is operated, the holding member ceases to hold the needle, causing the needle to burst the bag.

[0018] With this configuration, the user can spray fire extinguishing liquid around the door body by operating the bursting control unit.

[0019] (10) In the door described in (9) above, the burst operation section is provided on both sides of the door body in the thickness direction. With this configuration, the user can operate the rupture control unit from either side of the door's thickness.

[0020] (11) In any one of the doors described in (1) to (10) above, the door body is a hinged door, and the bag is located on the door edge side in the width direction of the door body. This configuration allows for more rigid restriction of the door's opening and closing motion compared to when the bag-like structure is located towards the door's tail end in the width direction of the door itself.

[0021] (12) In any one of the doors described in (1) to (10) above, the door body is a sliding door, and the bag is located in the center of the door body in the width direction. This configuration makes it less likely for the load on the door's hanging hardware to become uneven. [Effects of the Invention]

[0022] According to the door of the present disclosure, the contact surface is less likely to be damaged.

Brief Description of the Drawings

[0023] [Figure 1] It is a view of the door seen from the first side. [Figure 2] It is a view of the door seen from the second side. [Figure 3] It is a cross-sectional view of the door. [Figure 4] It is a view showing the stopper device in a state where the fire extinguishing liquid is not injected into the bag body. [Figure 5] It is a view showing the stopper device in a state where the fire extinguishing liquid is injected into the bag body. [Figure 6] It is a cross-sectional view showing the locking device in an unlocked state. [Figure 7] It is a cross-sectional view showing the locking device in a locked state. [Figure 8] It is an exploded perspective view of the cam knock mechanism. [Figure 9] It is a cross-sectional view of the cam knock mechanism along the line 9-9 in FIG. 6. [Figure 10] It is a schematic diagram showing the operation of the cam knock mechanism. [Figure 11] It is a schematic diagram showing the operation of the cam knock mechanism. [Figure 12] It is a view showing the rupture device in a state where the rupture operation part is not operated. [Figure 13] It is a bottom view showing the rupture device in a state where the rupture operation part is not operated. [Figure 14] It is a bottom view showing the rupture device in a state where the rupture operation part is operated. [Figure 15] It is a view showing the rupture device in a state where the rupture operation part is operated. [Figure 16] It is a view of the door in the modification seen from the first side. [Figure 17] It is a view of the door in the modification seen from the second side.

Modes for Carrying Out the Invention

[0024] The door 20 of this embodiment will be described with reference to Figures 1 to 13. As shown in Figures 1 and 2, an opening 10a is provided in the wall 10. A door frame 11 and a door 20 are fitted into the opening 10a. The door frame 11 is fixed to the wall 10. The door 20 comprises a door body 21 and a stopper device 22. In this embodiment, the door body 21 is a hinged door that is rotatably mounted on the door frame 11 via a hinge 12. The stopper device 22 is provided on the door body 21. The stopper device 22 is a device for stopping the door body 21 at any desired position.

[0025] <Door body 21> As shown in Figure 3, the door body 21 includes a first door panel 211, a second door panel 212, and a lower panel 213. The first door panel 211 and the second door panel 212 are spaced apart in the thickness direction of the door body 21. The lower panel 213 connects the lower end of the first door panel 211 and the lower end of the second door panel 212.

[0026] The door body 21 has a first surface 21a and a second surface 21b. The first surface 21a and the second surface 21b are surfaces perpendicular to the thickness direction of the door body 21. The second surface 21b is the surface opposite to the first surface 21a. The first surface 21a is made up of the surface of the first door panel 211 that is opposite to the surface facing the second door panel 212. The second surface 21b is made up of the surface of the second door panel 212 that is opposite to the surface facing the first door panel 211.

[0027] As shown in Figures 1 and 2, a gap G is provided between the lower surface 21c of the door body 21 and the floor surface F. The lower surface 21c of the door body 21 is formed by the lower surface of the lower panel 213. Note that in Figures 1 and 2, the size of the gap G is exaggerated compared to its actual size. In Figures 1 and 2, the bag body 31 (described later) of the stopper device 22 is shown protruding from the lower surface 21c of the door body 21, but when the stopper operating part 33 (described later) of the stopper device 22 is not operated, the bag body 31 is housed inside the door body 21.

[0028] <Stopper device 22> As shown in Figures 4 and 5, the stopper device 22 is installed inside the door body 21. The stopper device 22 includes a bag body 31, a pump 32, a stopper operating unit 33, and a stopper driving unit 34.

[0029] The bag 31 is made of rubber. Therefore, the bag 31 is stretchable. The shape of the bag 31 can be anything as long as it is bag-like. In this embodiment, the bag 31 is provided at the bottom of the door body 21. There is no lower panel 213 on the underside of the bag 31. The bag 31 faces the floor surface F. In this embodiment, the bag 31 is located on the door edge side in the width direction of the door body 21 (see Figures 1 and 2).

[0030] The pump 32 is configured to perform an injection operation to inject the fire extinguishing liquid as a fluid into the bag 31, and a discharge operation to discharge the fire extinguishing liquid from the bag 31. The fire extinguishing liquid is, for example, a mixture of potassium chloride and ammonium phosphate.

[0031] The pump 32 of this embodiment includes a cylinder tube 32a filled with fire extinguishing liquid, a piston 32b provided inside the cylinder tube 32a, and a piston rod 32c extending from the piston 32b. The cylinder tube 32a is connected to the bag 31. In the injection operation, the piston 32b and piston rod 32c move so that the volume of the space filled with fire extinguishing liquid decreases. As a result, the piston 32b pushes out the fire extinguishing liquid in the cylinder tube 32a, injecting the fire extinguishing liquid into the bag 31. In the discharge operation, the piston 32b and piston rod 32c move so that the volume of the space filled with fire extinguishing liquid increases. As a result, the fire extinguishing liquid that was injected into the bag 31 is sucked into the cylinder tube 32a, and the fire extinguishing liquid is discharged from the bag 31.

[0032] As shown in Figure 4, the bag 31 is contracted when no fire extinguishing liquid has been injected. In its contracted state, the bag 31 is housed inside the door body 21. In its contracted state, the bag 31 does not protrude from the lower surface 21c of the door body 21. In its contracted state, the bag 31 is not in contact with the floor surface F.

[0033] As shown in Figure 5, the bag 31 expands when fire extinguishing liquid is injected by the pump 32. In its expanded state, the bag 31 protrudes from the lower surface 21c of the door body 21. In its expanded state, the bag 31 makes contact with the floor surface F, which serves as the contact surface.

[0034] When the pump 32 discharges, the fire extinguishing liquid injected into the bag 31 is discharged into the cylinder tube 32a, causing the bag 31 to contract and become non-contact with the floor surface F. In other words, the bag 31 returns to the state shown in Figure 4.

[0035] The stopper operating unit 33 is operated by the user when stopping the door body 21. The user operates the stopper operating unit 33 when the door body 21 is in the desired stopping position. In this embodiment, the stopper operating unit 33 is a foot lever that is pushed down by the user's foot when stopping the door body 21. Therefore, the stopper operating unit 33 is located at the bottom of the door body 21.

[0036] The stopper drive unit 34 causes the pump 32 to perform an injection operation when the stopper operating unit 33 is operated. In this embodiment, the stopper drive unit 34 causes the pump 32 to perform an injection operation when the stopper operating unit 33 is pushed down. The stopper drive unit 34 includes a first rack 41, a second rack 42, a gear 43, and a connecting member 44.

[0037] The first rack 41 and the second rack 42 each extend in the vertical direction. The first rack 41 and the second rack 42 face each other in the width direction of the door body 21. A stopper operating part 33 is provided at the lower end of the first rack 41.

[0038] A first gear rail 41a is provided on the surface of the first rack 41 facing the second rack 42. The first gear rail 41a extends in the vertical direction. A second gear rail 42a is provided on the surface of the second rack 42 facing the first rack 41. The second gear rail 42a extends in the vertical direction. Gear 43 is positioned between the first rack 41 and the second rack 42. Gear 43 meshes with the first gear rail 41a and the second gear rail 42a, respectively. The second rack 42 is connected to the first rack 41 via gear 43.

[0039] The connecting member 44 connects the upper end of the second rack 42 to the tip of the piston rod 32c. The connecting member 44 is supported by the door body 21 via a first shaft 44a, which acts as an axis. The first shaft 44a extends in the thickness direction of the door body 21. The connecting member 44 is rotatable about the first shaft 44a. When the portion of the connecting member 44 located on the second rack 42 side of the first shaft 44a rises, the portion of the connecting member 44 located on the piston rod 32c side of the first shaft 44a descends. When the portion of the connecting member 44 located on the second rack 42 side of the first shaft 44a descends, the portion of the connecting member 44 located on the piston rod 32c side of the first shaft 44a rises.

[0040] As shown in Figure 3, the stopper operating portion 33 extends in the thickness direction of the door body 21. The stopper operating portion 33 protrudes from both sides of the door body 21 in the thickness direction. Specifically, the first end of the stopper operating portion 33 penetrates the first door panel 211 and protrudes from the first surface 21a of the door body 21. The second end of the stopper operating portion 33 penetrates the second door panel 212 and protrudes from the second surface 21b.

[0041] As shown in Figures 4 and 5, a first spring 45 is provided between the portion of the stopper operating section 33 located inside the door body 21 and the lower panel 213 of the door body 21. The first spring 45 biases the stopper operating section 33 upward.

[0042] As shown in Figure 5, when the user steps on the stopper operating part 33, the stopper operating part 33 is pushed down, causing the first rack 41 to descend. When the first rack 41 descends, the gear 43 rotates, causing the second rack 42 to rise. When the second rack 42 rises, the part of the connecting member 44 located on the second rack 42 side of the first shaft 44a rises, and the part of the connecting member 44 located on the piston rod 32c side of the first shaft 44a descends. When the part of the connecting member 44 located on the piston rod 32c side of the first shaft 44a descends, the piston rod 32c pushes the piston 32b. As a result, the piston 32b pushes out the fire extinguishing liquid in the cylinder tube 32a, and fire extinguishing liquid is injected into the bag 31. In this way, when the user pushes down the stopper operating part 33, fire extinguishing liquid is injected into the bag 31.

[0043] When the stopper operating section 33 is pushed down, the first spring 45 is compressed. Therefore, if the stopper operating section 33 is not locked by the locking device 23 described later, when the user removes their foot from the stopper operating section 33, the first spring 45 causes the stopper operating section 33 to rise back to its position before it was pushed down.

[0044] When the stopper operating section 33 rises, the first rack 41 rises. When the first rack 41 rises, the gear 43 rotates, causing the second rack 42 to descend. When the second rack 42 descends, the part of the connecting member 44 located on the second rack 42 side of the first shaft 44a descends, and the part of the connecting member 44 located on the piston rod 32c side of the first shaft 44a rises. When the part of the connecting member 44 located on the piston rod 32c side of the first shaft 44a rises, the piston 32b and piston rod 32c move so that the volume of the space filled with fire extinguishing liquid increases. As a result, the fire extinguishing liquid that was injected into the bag 31 is sucked into the cylinder tube 32a, and the fire extinguishing liquid is discharged from the bag 31.

[0045] <Locking device 23> As shown in Figure 3, the door 20 is equipped with a locking device 23. The locking device 23 is a device for locking the door when the stopper operating part 33 is pressed down, that is, when the fire extinguishing liquid has been injected into the bag 31. Note that the locking device 23 is shown in a simplified manner in Figure 3. Also, the locking device 23 is not shown in Figures 4 and 5.

[0046] As shown in Figures 3 and 6, a notch 41b is provided on the surface of the first rack 41 facing the second rack 42. The notch 41b is aligned with the first gear rail 41a and the thickness direction of the door body 21. The notch 41b is provided at the bottom of the first rack 41.

[0047] As shown in Figures 6 and 7, the locking device 23 includes a knock cam mechanism 51, a locking piece 52, and a mechanism drive unit 53. The knock cam mechanism 51 includes a cylindrical member 61, a knocking member 62, a rotor 63, and a second spring 64.

[0048] The cylindrical member 61 is fixed to the door body 21. The axial direction of the cylindrical member 61 is the same as the width direction of the door body 21. The knock member 62, rotor 63, and second spring 64 are provided inside the cylindrical member 61. The knock member 62, rotor 63, and second spring 64 are arranged in this order in the axial direction of the cylindrical member 61. The second spring 64 is located on the first rack 41 side of the rotor 63 in the axial direction of the cylindrical member 61. The knock member 62 and rotor 63 are provided inside the cylindrical member 61 so as to be movable in the axial direction of the cylindrical member 61. The first end of the second spring 64 is connected to the inner circumferential surface of the cylindrical member 61. The second end of the second spring 64 is connected to the rotor 63. The second spring 64 biases the rotor 63 toward the knock member 62.

[0049] As shown in Figures 8 and 9, the inner circumferential surface of the cylindrical member 61 is provided with a plurality of first protrusions 61a. The plurality of first protrusions 61a are arranged at intervals in the circumferential direction of the cylindrical member 61. The ends of the first protrusions 61a in the axial direction of the cylindrical member 61 are provided with a first guide surface 611, a second guide surface 612, and a stepped surface 613.

[0050] The first guide surface 611 and the second guide surface 612 are inclined so as to move away from the first rack 41 in the first circumferential direction of the cylindrical member 61. The stepped surface 613 connects the first guide surface 611 and the second guide surface 612. More specifically, the stepped surface 613 connects the lower end of the first guide surface 611 in the circumferential direction of the cylindrical member 61, which is the end furthest from the first rack 41, and the upper end of the second guide surface 612 in the circumferential direction of the cylindrical member 61, which is the end closer to the first rack 41.

[0051] Multiple second protrusions 62a are provided on the outer circumferential surface of the knock member 62. The number of second protrusions 62a is the same as the number of first protrusions 61a. The multiple second protrusions 62a are arranged at intervals in the circumferential direction of the knock member 62. The second protrusions 62a are located between two adjacent first protrusions 61a in the circumferential direction of the cylindrical member 61.

[0052] The knock member 62 is provided with a first inclined surface 621 and a second inclined surface 622 at the end closest to the rotor 63. The first inclined surface 621 is inclined away from the first rack 41 in the first circumferential direction of the cylindrical member 61. The second inclined surface 622 is inclined towards the first rack 41 in the first circumferential direction of the cylindrical member 61. That is, the second inclined surface 622 is inclined in the opposite direction to the first inclined surface 621. The first inclined surface 621 and the second inclined surface 622 are provided alternately in the circumferential direction of the cylindrical member 61. The width of the first inclined surface 621 and the width of the second inclined surface 622 are the same in the radial direction of the cylindrical member 61.

[0053] As shown in Figures 10 and 11, the connection portion between the first inclined surface 621 and the second inclined surface 622 that is closer to the first rack 41 is located in the same position as the second projection 62a or the first guide surface 611 in the circumferential direction of the cylindrical member 61.

[0054] As shown in Figures 8 and 9, the outer circumferential surface of the rotor 63 is provided with a plurality of third protrusions 63a. The number of third protrusions 63a is the same as the number of first protrusions 61a. The plurality of third protrusions 63a are arranged at intervals in the circumferential direction of the rotor 63.

[0055] An inclined surface 630 is provided at the end of the third projection 63a closest to the knock member 62. The width of the inclined surface 630 in the radial direction of the cylindrical member 61 is greater than the width of the first inclined surface 621. The inclined surface 630 of the rotor 63 faces the first inclined surface 621 and the second inclined surface 622 of the knock member 62 (see Figures 10 and 11). When the rotor 63 is positioned at a predetermined angle in the circumferential direction of the cylindrical member 61, the third projection 63a of the rotor 63 is positioned between two adjacent first projections 61a in the circumferential direction of the cylindrical member 61 (see Figure 10). When the rotor 63 is positioned at other predetermined angles in the circumferential direction of the cylindrical member 61, the inclined surface 630 of the rotor 63 faces the first guide surface 611 of the cylindrical member 61 (see Figure 11).

[0056] As shown in Figures 6 and 7, the locking piece 52 is connected to the rotor 63 via a connecting member 54. More specifically, the first end of the connecting member 54 is connected to the locking piece 52. The second end of the connecting member 54 is inserted into the rotor 63. The connecting member 54 and the locking piece 52 are movable in the axial direction of the cylindrical member 61 together with the rotor 63. The rotor 63 is rotatable relative to the locking piece 52 and the connecting member 54. In other words, even if the rotor 63 rotates, the locking piece 52 and the connecting member 54 do not rotate. The connecting member 54 is inserted through a second spring 64.

[0057] As described above, the second spring 64 biases the rotor 63 toward the knock member 62. Also, the inclined surface 630 of the rotor 63 faces the first inclined surface 621 of the knock member 62. As a result, a rotational force acts on the rotor 63 in the first direction.

[0058] In Figure 10, the third projection 63a of the rotor 63 is located between two adjacent first projections 61a in the circumferential direction of the cylindrical member 61. Therefore, the rotation of the rotor 63 in the first direction is restricted. Also, at this time, the rotor 63 is located far away from the first rack 41.

[0059] From the state shown in Figure 10, when the knocking member 62 pushes the rotor 63, the rotor 63 moves in a direction toward the first rack 41. Then, when the third projection 63a disengages from between the two first projections 61a adjacent to each other in the circumferential direction of the cylindrical member 61, the rotor 63 becomes rotatable in the first direction. The rotor 63 rotates in the first direction as the inclined surface 630 of the third projection 63a moves along the first inclined surface 621 of the knocking member 62 and the first guide surface 611 of the first projection 61a. As shown in Figure 11, the third projection 63a abuts against the stepped surface 613, restricting further rotation of the rotor 63 in the first direction. As a result, as shown in Figure 7, the rotor 63 and the locking piece 52 are closer to the first rack 41 than in the state shown in Figure 6. Hereinafter, the operation of the locking piece 52 based on this knock cam mechanism 51 will be referred to as the locking piece protrusion operation.

[0060] When the knocking member 62 pushes the rotor 63 again from the state shown in Figure 11, the rotor 63 moves toward the first rack 41. Then, when the third projection 63a moves to the upper end of the second guide surface 612, the end face of the third projection 63a in the circumferential direction of the cylindrical member 61 no longer faces the stepped surface 613 in the circumferential direction of the cylindrical member 61, and the rotor 63 becomes rotatable in the first direction. The rotor 63 rotates in the first direction as the inclined surface 630 of the third projection 63a moves along the first inclined surface 621 of the knocking member 62 and the second guide surface 612 of the first projection 61a. As shown in Figure 10, when the third projection 63a enters between two adjacent first projections 61a in the circumferential direction of the cylindrical member 61, the rotor 63 moves away from the first rack 41 and further rotation of the rotor 63 in the first direction is restricted. As a result, as shown in Figure 6, the rotor 63 and the locking piece 52 are moved further away from the first rack 41 than in the state shown in Figure 7. Hereinafter, the operation of the locking piece 52 based on this knock cam mechanism 51 will be referred to as the locking piece retraction operation.

[0061] Each time the knocking member 62 pushes the rotor 63, the positions of the rotor 63 and the locking piece 52 in the axial direction of the cylindrical member 61 alternate between the retracted position shown in Figures 6 and 10 and the protruding position shown in Figures 7 and 11.

[0062] As shown in Figures 6 and 7, when the stopper operating section 33 is pressed down, the mechanism drive unit 53 presses the knock member 62 of the knock cam mechanism 51. The mechanism drive unit 53 includes a slide member 56 and a rotating member 57.

[0063] The rotating member 57 extends in the vertical direction. The upper end of the rotating member 57 is aligned with the knocking member 62. The rotating member 57 is rotatable around the second shaft 57a. The sliding member 56 extends in the width direction of the door body 21. The sliding member 56 is configured to slide in the width direction of the door body 21. The sliding member 56 is located between the lower end of the first rack 41 and the lower end of the rotating member 57. An inclined surface 56a is provided at the end of the sliding member 56 that is closer to the first rack 41. The inclined surface 56a is sloped so that it approaches the first rack 41 as it goes from top to bottom.

[0064] Figure 6 shows the locking device 23 before the stopper operating section 33 is pushed down. In Figure 6, the locking piece 52 is in the retracted position. The notch 41b is higher than the locking piece 52. In this state, the stopper operating section 33 and the first rack 41 are movable up and down.

[0065] As the stopper operating part 33 is pushed down from the state shown in Figure 6, the first rack 41 descends, and the lower end of the first rack 41 comes into contact with the inclined surface 56a of the slide member 56. As a result, the slide member 56 slides away from the first rack 41, pressing against the lower end of the rotating member 57. The rotating member 57 rotates such that the part located below the second shaft 57a moves away from the first rack 41, and the part located above the second shaft 57a moves closer to the first rack 41. The upper end of the rotating member 57 presses the knock member 62 in a direction that brings it closer to the first rack 41. As a result, when the rotor 63 is pushed in by the knock member 62, the lock piece 52 moves from the retracted position to the protruding position together with the rotor 63 due to the lock piece protruding operation described above.

[0066] As shown in Figure 7, the locking piece 52, which has moved from the retracted position to the protruding position, is inserted into the notch 41b, which has moved to a height opposite to the locking piece 52 as the first rack 41 descends. When the locking piece 52 is inserted into the notch 41b, the vertical movement of the first rack 41 is restricted. Therefore, Figure 7 shows the locked state in which the stopper operating part 33 is locked in a depressed position due to the insertion of the locking piece 52 into the notch 41b.

[0067] As described above, the second spring 64 biases the rotor 63 toward the knock member 62. As a result, after the knock member 62 pushes the rotor 63 inward, it is pressed away from the first rack 41 by the second spring 64 via the rotor 63. Consequently, the knock member 62 presses against the upper end of the rotating member 57. The rotating member 57 rotates such that the portion located above the second shaft 57a moves away from the first rack 41, and the portion located below the second shaft 57a moves closer to the first rack 41. The lower end of the rotating member 57 presses against the lower end of the sliding member 56. As a result, the sliding member 56 slides toward the first rack 41.

[0068] In the locked state shown in Figure 7, when the stopper operating part 33 is pushed down, the lock piece 52 moves from the protruding position to the retracted position due to the aforementioned lock piece retraction operation, thereby escaping from the notch 41b, and the first rack 41 becomes able to move up and down. In other words, when the stopper operating part 33 is pushed down further in the locked state, the up and down movement of the stopper operating part 33 is not restricted, resulting in an unlocked state.

[0069] In this way, the locking device 23 alternately switches between a locked state, in which the locking piece 52 is inserted into the notch 41b of the first rack 41 each time the stopper operating section 33 is pushed down, thereby restricting the vertical movement of the stopper operating section 33, and an unlocked state, in which the locking piece 52 is not inserted into the notch 41b, and therefore the vertical movement of the stopper operating section 33 is not restricted.

[0070] In this embodiment, the tip of the locking piece 52 and the opening of the notch 41b are tapered so that the contact area between the locking piece 52 and the first rack 41 is reduced when the locking piece 52 moves in and out of the notch 41b.

[0071] <Rupture device 24> As shown in Figures 12 to 15, the door 20 is equipped with a bursting device 24. The bursting device 24 is a device for bursting the bag 31 into which the fire extinguishing liquid has been injected in the event of a fire. In Figures 12 and 15, the stopper device 22 other than the bag 31 is not shown.

[0072] As shown in Figure 12, the rupture device 24 includes a needle 71, a holding member 72, and a rupture operation unit 73. The needle 71 has a flange 71a extending from its outer circumferential surface. The holding member 72 is capable of holding the needle 71 above the bag 31. The holding member 72 extends in the width direction of the door body 21. The holding member 72 is rotatable about a third axis 72a. The rupture operation unit 73 is operated by the user when rupturing the bag 31.

[0073] As shown in Figures 13 and 14, the burst operation unit 73 of this embodiment has a first button 73a and a second button 73b. The first button 73a is located in a first recess 21d provided on the first surface 21a of the door body 21. The second button 73b is located in a second recess 21e provided on the second surface 21b of the door body 21. Therefore, the burst operation unit 73 is provided on both sides of the door body 21 in the thickness direction. The first button 73a and the second button 73b are each connected to the first end of the retaining member 72 via a third spring 74.

[0074] The door 20 of this embodiment has a first cover 25 to prevent unintentional contact with the first button 73a. The first cover 25 is attached to the first recess 21d so as to be openable and closable. Figure 1 shows the first cover 25 in the open position. When the first cover 25 is closed, the first recess 21d is covered by the first cover 25. This prevents unintentional contact with the first button 73a located within the first recess 21d. When the user presses the first button 73a, the second cover 26 is opened.

[0075] The door 20 has a second cover 26 to prevent unintentional contact with the second button 73b. The second cover 26 is mounted so as to be able to open and close the second recess 21e. Figure 2 illustrates the second cover 26 in the closed position. When the second cover 26 is closed, the second recess 21e is covered by the second cover 26. This prevents unintentional contact with the second button 73b located within the second recess 21e. When the user presses the second button 73b, the second cover 26 is opened.

[0076] As shown in Figure 12, in this embodiment, the needle 71 is inserted through the fourth spring 75. The first end of the fourth spring 75 is connected to the flange 71a. The second end of the fourth spring 75 is connected to a connecting plate 76 fixed to the door body 21. The needle 71 passes through the connecting plate 76. The needle 71 is movable relative to the connecting plate 76.

[0077] As shown in Figures 12 and 13, when the first button 73a and the second button 73b are not pressed, the second end of the retaining member 72 is located below the flange 71a. The retaining member 72 holds the needle 71 above the bag body 31 so that the needle 71 does not come into contact with the bag body 31. In this state, the fourth spring 75 is compressed to a length less than its natural length.

[0078] As shown in Figure 14, in the event of a fire, the user presses either the first button 73a or the second button 73b. For example, when the second button 73b is pressed, the retaining member 72 rotates around the third axis 72a. As a result, the second end of the retaining member 72 is no longer positioned below the flange 71a, and therefore ceases to hold the needle 71.

[0079] Although not shown in the diagram, the same applies when the first button 73a is pressed. When the second button 73b is pressed, the retaining member 72 rotates in the opposite direction to when the first button 73a is pressed. As a result, the second end of the retaining member 72 is no longer located below the flange 71a, and therefore no longer holds the needle 71. In other words, when the bursting operation unit 73 is operated by the user, the retaining member 72 no longer holds the needle 71.

[0080] As shown in Figure 15, when the needle 71 is no longer held by the retaining member 72, it moves downward. In this embodiment, the needle 71 is biased downward by the third spring 74. The needle 71 punctures the bag 31, causing it to burst. When the bag 31 bursts, the fire extinguishing liquid flows out of the bag 31, scattering the fire extinguishing liquid around the door body 21.

[0081] [Operation of this embodiment] The operation of this embodiment will now be explained. The door 20 comprises a door body 21 and a stopper device 22 provided on the door body 21. The stopper device 22 stops the door body 21 at any desired position. The stopper device 22 comprises a bag 31 and a pump 32. The bag 31 is expandable and retractable. The pump 32 is configured to perform an injection operation to inject fire extinguishing liquid into the bag 31 and a discharge operation to discharge fire extinguishing liquid from the bag 31.

[0082] As shown in Figure 5, the bag 31 expands when fire extinguishing liquid is injected, causing it to come into contact with the floor surface F. Additionally, a portion of the bag 31 enters the gap G between the lower surface 21c of the door body 21 and the floor surface F. This creates frictional resistance between the bag 31 and the floor surface F, restricting the opening and closing operation of the door body 21. Therefore, the door body 21 can be stopped.

[0083] As shown in Figure 4, the bag 31 shrinks as the fire extinguishing liquid is discharged, becoming non-contact with the floor surface F. This allows the door body 21 to be opened and closed. [Effects of this embodiment] The effects of this embodiment will now be explained.

[0084] (1) Since the bag 31 is filled with fire extinguishing liquid, the bag 31 remains soft even when expanded. Therefore, when the door body 21 stops due to the expanded bag 31 coming into contact with the floor surface F, even if force is applied to the door body 21, the floor surface F is less likely to be damaged.

[0085] (2) The pump 32 is further configured to perform a discharge operation that discharges the fire extinguishing liquid from the bag 31. The bag 31 contracts as the fire extinguishing liquid is discharged, so that it does not come into contact with the floor surface F. With this configuration, the door body 21 can be opened and closed. Therefore, the door body 21, which was stopped at any position, can be opened and closed.

[0086] (3) The stopper device 22 includes a stopper operating unit 33 and a stopper drive unit 34. The stopper operating unit 33 is operated by the user when stopping the door body 21. When the stopper operating unit 33 is operated, the stopper drive unit 34 causes the pump 32 to perform an injection operation.

[0087] With this configuration, the user can stop the door body 21 by operating the stopper operating unit 33. (4) The stopper operating section 33 is a lever that is pushed down by the user when stopping the door body 21. The pump 32 has a cylinder tube 32a, a piston 32b, and a piston rod 32c. The cylinder tube 32a is connected to the bag body 31 and is filled with fire extinguishing liquid. The piston rod 32c is located inside the cylinder tube 32a. The piston rod 32c extends from the piston 32b.

[0088] The stopper drive unit 34 includes a first rack 41, a second rack 42, and a connecting member 44. The first rack 41 is provided with a stopper operating part 33. The second rack 42 is connected to the first rack 41 via a gear 43. The connecting member 44 connects the second rack 42 to the piston rod 32c. The connecting member 44 is rotatable around the first shaft 44a.

[0089] In this configuration, when the user pushes down the stopper operating part 33, the first rack 41 descends. When the first rack 41 descends, the gear 43 rotates, causing the second rack 42 to rise. When the second rack 42 rises, the part of the connecting member 44 located on the second rack 42 side of the first shaft 44a rises, and the part of the connecting member 44 located on the piston rod 32c side of the first shaft 44a descends. When the part of the connecting member 44 located on the piston rod 32c side of the first shaft 44a descends, the piston rod 32c pushes the piston 32b. As a result, the piston 32b pushes out the fire extinguishing liquid in the cylinder tube 32a. Therefore, the fire extinguishing liquid can be injected into the bag 31.

[0090] (5) The door 20 is equipped with a locking device 23 that locks the door when the stopper operating part 33 is pressed down. With this configuration, even if the user stops operating the stopper control unit 33, the stopper control unit 33 remains in the depressed position, thus maintaining the state in which the fire extinguishing liquid is injected into the bag 31.

[0091] (6) The locking device 23 includes a knock cam mechanism 51, a locking piece 52, and a mechanism drive unit 53. The locking piece 52 is connected to the rotor 63 of the knock cam mechanism 51. When the stopper operating unit 33 is pressed down, the mechanism drive unit 53 presses the knocking member 62 of the knock cam mechanism 51. Each time the stopper operating unit 33 is pressed down, the locking device 23 alternately switches between a locked state in which the locking piece 52 is inserted into a notch 41b provided in the first rack 41, and an unlocked state in which the locking piece 52 is not inserted into the notch 41b.

[0092] With this configuration, the user can easily switch the locking device 23 between the locked and unlocked states. (7) The stopper operating section 33 protrudes from both sides in the thickness direction of the door body 21.

[0093] With this configuration, the user can operate the stopper operating section 33 from either side in the thickness direction of the door body 21. (8) The door 20 is equipped with a bursting device 24 that bursts the bag 31 into which the fire extinguishing liquid is injected. With this configuration, in the event of a fire, the bursting device 24 will burst the bag 31, thereby dispersing the fire extinguishing liquid injected into the bag 31 around the door body 21. Therefore, the spread of fire across the opening 10a into which the door 20 is installed can be suppressed.

[0094] (9) The rupture device 24 includes a needle 71, a holding member 72, and a rupture operation unit 73. The needle 71 is for rupturing the bag 31. The holding member 72 is capable of holding the needle 71 above the bag 31. The rupture operation unit 73 is operated by the user. When the rupture operation unit 73 is operated, the holding member 72 no longer holds the needle 71, causing the needle 71 to rupture the bag 31.

[0095] With this configuration, the user can spray fire extinguishing liquid around the door body 21 by operating the rupture control unit 73. (10) The rupture operation section 73 is provided on both sides of the door body 21 in the thickness direction.

[0096] With this configuration, the user can operate the rupture control unit 73 from either side in the thickness direction of the door body 21. (11) The door body 21 is a hinged door. The bag 31 is located on the door edge side in the width direction of the door body 21.

[0097] With this configuration, the opening and closing operation of the door body 21 can be more firmly restricted compared to the case where the bag 31 is located on the tail end side in the width direction of the door body 21. (12) Generally, since fire-resistant materials are used for the wall 10, the fire is less likely to spread between the two spaces separated by the wall 10 in the area where the wall 10 is provided. On the other hand, in the opening 10a, unless a fire door is used, there is a risk of the fire spreading across the opening 10a. In this embodiment, by rupturing the bag 31 into which the fire extinguishing liquid has been injected by the bursting device 24, the fire can be prevented from spreading across the opening 10a even if the door 20 is not a fire door.

[0098] <Example of changes> The above embodiments are illustrative of possible forms of the door 20 and are not intended to limit its form. The door 20 may take forms different from those illustrated in the above embodiments. Examples include forms in which some of the configurations of the embodiments are replaced, modified, or omitted, or forms in which new configurations are added to the embodiments. Examples of modifications to the embodiments are shown below.

[0099] The fluid injected into the bag 31 is not limited to fire extinguishing liquid. The fluid injected into the bag 31 may be water or air. The door body 21 may extend from the floor surface F to the ceiling surface. In this case, the bag body 31 may be provided on the upper part of the door body 21. When the bag body 31 expands due to the injection of fluid, it comes into contact with the ceiling surface, which is the contact surface. When the bag body 31 contracts due to the discharge of fluid, it becomes non-contact with the ceiling surface.

[0100] The pump 32 may be configured to perform only the injection operation. Even in this case, at least the effect (1) of the above embodiment can be obtained. Pump 32 may be an electric pump.

[0101] The stopper operating section 33 may be a hand lever operated by the user. The stopper operating section 33 may be a lever raised by the user when stopping the door body 21. In this case, the stopper drive unit 34 does not need to have the first rack 41, the second rack 42, and the gear 43. The connecting member 44 connects the stopper operating section 33 and the piston rod 32c.

[0102] The stopper operating part 33 is not limited to a lever. The stopper operating part 33 may be, for example, a button or a switch. The stopper operating section 33 may protrude from only one of the first surface 21a and the second surface 21b of the door body 21.

[0103] The configuration of the locking device 23 is not limited to the configuration of the above embodiment and may be modified as appropriate. The door 20 does not need to be equipped with a bursting device 24.

[0104] The configuration of the rupture device 24 is not limited to the configuration of the above embodiment and may be modified as appropriate. The rupture operation section 73 may be provided on only one of the first surface 21a and the second surface 21b of the door body 21.

[0105] In the above embodiment, the rupture device 24 was activated by a user operating the rupture control unit 73, but this is not limited to that. The rupture device 24 may be configured to activate automatically when a fire is detected.

[0106] In the above embodiment, the bag 31 may be located in the center of the door body 21 in the width direction or on the door edge side. Even in this case, at least the effect (1) of the above embodiment can be obtained. As shown in Figures 16 and 17, the door body 21 may be a sliding door. The door body 21 is suspended from the door rail 14 by a hanging fitting 13 provided at the top of the door body 21.

[0107] If the bag 31 is a sliding door, it is preferable that the bag 31 be located in the center of the door body 21 in the width direction. In this case, uneven load distribution on the hanging hardware 13 is less likely to occur. A sliding door may be provided in the opening 10a. The sliding door is composed of multiple door bodies 21. In this case, because the area of ​​the opening 10a is large, it is particularly effective to suppress the spread of fire by activating the bursting device 24 in the event of a fire.

[0108] The door 20 does not necessarily have to have the first cover 25 and the second cover 26. <Note> This specification discloses the following technologies:

[0109] [Note 1] A door comprising a door body and a stopper device provided on the door body for stopping the door body at any position, wherein the stopper device comprises an expandable bag and a pump configured to perform an injection operation for injecting fluid into the bag, and the bag expands when the fluid is injected, thereby making contact with a floor or ceiling surface as a contact surface.

[0110] [Note 2] In the door described in Appendix 1, the pump is configured to perform a discharge operation to discharge the fluid from the bag, and the bag contracts as the fluid is discharged, thereby becoming non-contact with the contact surface.

[0111] [Note 3] In the door described in Appendix 1, the stopper device includes a stopper operating unit operated by the user when stopping the door body, and a stopper driving unit that causes the pump to perform the injection operation when the stopper operating unit is operated.

[0112] [Note 4] In the door described in Appendix 3, the stopper operating part is a lever that is pushed down by the user when stopping the door body, the pump has a cylinder tube connected to the bag body and filled with the fluid, a piston provided inside the cylinder tube, and a piston rod extending from the piston, and the stopper drive unit has a first rack on which the stopper operating part is provided, a second rack connected to the first rack via a gear, and a connecting member that connects the second rack and the piston rod and is rotatable around an axis.

[0113] [Note 5] The door described in Appendix 4 may be equipped with a locking device that locks the door when the stopper operating part is pressed down.

[0114] [Note 6] In the door described in Appendix 5, the locking device comprises a knock cam mechanism, a locking piece connected to the rotor of the knock cam mechanism, and a mechanism drive unit that presses the knocking member of the knock cam mechanism when the stopper operating unit is pushed down, and each time the stopper operating unit is pushed down, it alternately switches between a locked state in which the locking piece is inserted into a notch provided in the first rack and an unlocked state in which the locking piece is not inserted into the notch.

[0115] [Note 7] In the door described in Appendix 3, the stopper operating portion protrudes from both sides in the thickness direction of the door body.

[0116] [Note 8] In the door described in Appendix 1, the fluid is a fire extinguishing liquid, and the door is equipped with a bursting device that bursts the bag into which the fire extinguishing liquid has been injected.

[0117] [Note 9] In the door described in Appendix 8, the bursting device comprises a needle for bursting the bag, a holding member capable of holding the needle above the bag, and a bursting operation unit operated by the user. When the bursting operation unit is operated, the holding member ceases to hold the needle, causing the needle to burst the bag.

[0118] [Note 10] In the door described in Appendix 9, the burst operation section is provided on both sides of the door body in the thickness direction.

[0119] [Note 11] In the door described in Appendix 1, the door body is a hinged door, and the bag is located on the door edge side in the width direction of the door body.

[0120] [Note 12] In the door described in Appendix 1, the door body is a sliding door, and the bag-like structure is located in the center of the door body in the width direction. [Explanation of symbols]

[0121] 20...Door, 21...Door body, 22...Stopper device, 23...Locking device, 24...Burst device, 31...Bag body, 32...Pump, 32a...Cylinder tube, 32b...Piston, 32c...Piston rod, 33...Stopper operating part, 34...Stopper driving part, 41...First rack, 41b...Notch, 42...Second rack, 43...Gear, 44...Connecting member, 44a...First shaft as an axis, 51...Knock cam mechanism, 52...Locking piece, 53...Mechanism driving part, 62...Knock member, 63...Rotor, 71...Needle, 72...Holding member, 73...Burst operating part, F...Floor surface.

Claims

1. A door comprising a door body and a stopper device provided on the door body for stopping the door body at any position, The stopper device is, A stretchable bag body, A pump configured to enable an injection operation for injecting fluid into the aforementioned bag, It has, The bag expands when the fluid is injected, and as a result, it becomes a door that comes into contact with a floor or ceiling surface.

2. The pump is configured to perform a discharge operation to discharge the fluid from the bag, The door according to claim 1, wherein the bag body shrinks as the fluid is discharged, thereby becoming non-contact with the contact surface.

3. The stopper device further includes, A stopper operating unit operated by the user when stopping the aforementioned door body, When the stopper operating unit is operated, the stopper drive unit causes the pump to perform the injection operation, A door according to claim 1, having the following features.

4. The stopper operating part is a lever that is pushed down by the user when stopping the door body. The pump comprises a cylinder tube connected to the bag and filled with the fluid, a piston provided inside the cylinder tube, and a piston rod extending from the piston. The door according to claim 3, wherein the stopper drive unit comprises a first rack on which the stopper operating unit is provided, a second rack connected to the first rack via a gear, and a connecting member that connects the second rack and the piston rod and is rotatable around an axis.

5. The door according to claim 4, further comprising a locking device that locks the stopper operating portion in a depressed position.

6. The locking device is Knock cam mechanism, A locking piece connected to the rotor of the aforementioned knock cam mechanism, When the stopper operating part is pushed down, the mechanism drive unit presses the knock member of the knock cam mechanism, It has, The door according to claim 5, wherein each time the stopper operating part is pressed down, it alternately switches between a locked state in which the locking piece is inserted into a notch provided in the first rack and an unlocked state in which the locking piece is not inserted into the notch.

7. The door according to claim 3, wherein the stopper operating portion protrudes from both sides in the thickness direction of the door body.

8. The aforementioned fluid is a fire extinguishing liquid. The door according to claim 1, further comprising a bursting device for bursting the bag into which the fire extinguishing liquid has been injected.

9. The rupture device is, A needle for rupturing the aforementioned bag, A holding member capable of holding the needle is located above the bag body, A rupture control unit operated by the user, It has, The door according to claim 8, wherein when the rupture operation part is operated, the holding member ceases to hold the needle, causing the needle to rupture the bag.

10. The door according to claim 9, wherein the burst operation section is provided on both sides of the door body in the thickness direction.

11. The aforementioned door body is a hinged door, The door according to claim 1, wherein the bag-like body is located on the door edge side in the width direction of the door body.

12. The aforementioned door body is a sliding door, The door according to claim 1, wherein the bag-like body is located in the center of the door body in the width direction.

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