JP2012007464A - Indoor-outdoor differential pressure dissolution device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor-outdoor differential pressure dissolution device capable of opening and closing a door easily even when atmospheric pressure difference exists between the interior and the exterior.SOLUTION: An inventive indoor-outdoor differential pressure dissolution device 10 to be installed in a door 15 comprises a locking device 12 in which a dead bolt 33 moves forward from and backward to a front 19 of a lock case 16 by rotating operation of a key or thumb turn 11 to lock and unlock the locking device 12, an air flow passage which communicates with the inside and the outside of a room, and an opening/closing plate 14 which opens and closes the air flow passage. The indoor-outdoor differential pressure dissolution device 10 is provided with a rod 69 which connects the locking device 12 with the opening/closing plate 14 and moves in an axial direction interlocking with the rotating operation of the key or thumb turn 11 to move the opening/closing plate 14. The rod 69 moves the opening/closing plate 14 in the closing direction of the air flow passage interlocking with locking operation of the locking device 12, and moves the opening/closing plate 14 in the opening direction of the air flow passage interlocking with unlocking operation of the locking device 12.

Description

  The present invention relates to an indoor / outdoor differential pressure canceling device that opens and closes an air flow passage provided in a door in conjunction with a rotation operation of a key or thumb turn.

  Conventionally, a seal structure such as a seal packing is attached to a door frame in order to obtain airtightness and soundproofing of a door installed for people and objects to enter and leave the room (see, for example, Patent Document 1). ).

Japanese Patent Laid-Open No. 9-4339

  However, in the case of the conventional door described above, for example, when strong wind is blowing toward the door, or when indoor air is exhausted outside by operating a ventilation fan in the room, the atmospheric pressure in the room is negative. It becomes pressure and it becomes difficult to open the door. On the other hand, when the room window is opened and outdoor air is taken in, the outdoor air pressure becomes negative, and the door opens suddenly due to the pressure difference when entering or leaving the room, or There has been a problem that the door cannot be easily opened and closed because it is difficult to close the door.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide an indoor / outdoor differential pressure canceling device that can easily open and close a door even if there is a pressure difference between the inside and outside of the room. And

  The present invention includes: a locking device that locks and unlocks a dead bolt by advancing and retracting from the front of a lock case by rotating a key or a thumb turn; an air flow passage that communicates indoors and outdoors; and an opening and closing plate that opens and closes the air flow passage. An indoor / outdoor differential pressure canceling device provided in a provided door, wherein the locking device and the opening / closing plate are connected, and the opening / closing plate is moved by moving in the axial direction in conjunction with the rotation operation of the key or thumb turn. A rod for moving the open / close plate in a direction to close the air flow passage in conjunction with the locking operation of the locking device, and the air flow in conjunction with the unlocking operation of the locking device. The opening / closing plate is moved in a direction to open the path.

  In the indoor / outdoor differential pressure canceling device according to the present invention, the locking device includes a driving arm that extends in a radial direction and is connected to a rear end portion of the dead bolt, and has a driving tooth in a circumferential direction, and the key. Alternatively, a dharma that rotates in conjunction with the rotation operation of the thumb turn, a crank plate that has a driven tooth that meshes with the driving tooth of the dharma in the circumferential direction, and that rotates as the dharma rotates, and is connected to the crank plate. And a slider that moves up and down with rotation of the crank plate, and an upper end of the rod is connected to a lower end of the slider, and the rod is provided so as to be able to move up and down together with the slider.

  In the indoor / outdoor differential pressure elimination apparatus according to the present invention, the rod includes: an elevating member connected to a lower end portion of the rod; and the opening / closing plate that is pressed by the elevating member and is rotatable about one end side. Is raised, the elevating member is raised to rotate the opening / closing plate in a direction to open the air flow passage, and when the rod is lowered, the elevating member is lowered to close the air flow passage. The opening / closing plate may rotate.

  In the indoor / outdoor differential pressure relieving device according to the present invention, the elevating member is a slide bar provided with an engagement hole, and the opening / closing plate engages with the engagement hole so as to be vertically movable. When the rod rises, when the slide bar around the engagement hole pushes up the engagement protrusion to open the air flow passage, the opening / closing plate rotates and the rod descends The opening / closing plate may rotate in a direction in which the slide bar around the engagement hole pushes down the engagement protrusion to close the air flow passage.

  In the indoor / outdoor differential pressure canceling apparatus according to the present invention, the elevating member is a push plate coupled to the rod, and the open / close plate pivotally supports a roller and opens the air flow passage by a biasing member. When the rod is lowered in the direction, the push plate pushes down the roller, and the opening / closing plate rotates in a direction to close the air flow path against the urging force of the urging member, When the rod rises, the push-down of the roller by the push plate is released, and the opening / closing plate may rotate in a direction to open the air flow passage by the urging force of the urging member.

  According to the present invention, since the air flow passage is opened by the opening / closing plate in conjunction with the unlocking operation of the locking device, the door can be easily opened / closed even if there is a pressure difference inside and outside the room.

It is sectional drawing which shows the state by which the wind inlet is closed in response to the locking operation of a locking device in the indoor / outdoor differential pressure eliminating device according to the first embodiment of the present invention. It is sectional drawing which shows the locking state of the locking device in the indoor / outdoor differential pressure elimination apparatus which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the state by which the wind inlet is open | released in connection with the unlocking operation | movement of a locking device in the indoor / outdoor differential pressure elimination apparatus which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the unlocking state of the locking device in the indoor / outdoor differential pressure eliminating device according to the first embodiment of the present invention. It is a top view which shows the rod in the indoor / outdoor differential pressure elimination apparatus which concerns on the 1st Embodiment of this invention. It is a rear view of a door in the indoor / outdoor differential pressure elimination apparatus according to the second embodiment of the present invention. It is a front view of a door in the indoor-outdoor differential pressure elimination apparatus which concerns on the 2nd Embodiment of this invention. It is AA sectional drawing of FIG. In the indoor / outdoor differential pressure elimination device according to the second embodiment of the present invention, it is a cross-sectional view showing a state where the air flow passage is closed in conjunction with the locking operation of the locking device. It is a disassembled perspective view which shows the connection structure of a rod and a slide bar in the indoor / outdoor differential pressure elimination apparatus according to the second embodiment of the present invention. It is sectional drawing which shows the state by which the air flow path is open | released in connection with the unlocking operation | movement of a locking device in the indoor-outdoor differential pressure elimination apparatus which concerns on the 2nd Embodiment of this invention. It is a front view of a door in the indoor-outdoor differential pressure elimination apparatus which concerns on the 3rd Embodiment of this invention. It is a front view which shows the internal structure of a storage box in the indoor / outdoor differential pressure elimination apparatus which concerns on the 3rd Embodiment of this invention. It is BB sectional drawing of FIG. It is a bottom view of the indoor / outdoor differential pressure elimination device according to the third embodiment of the present invention. It is CC sectional drawing of FIG.

<First Embodiment>
Hereinafter, an indoor / outdoor differential pressure elimination apparatus according to a first embodiment of the present invention will be described with reference to the drawings. Here, FIG. 1 is a cross-sectional view showing a state in which the air inlet is closed in conjunction with the locking operation of the locking device in the indoor / outdoor differential pressure canceling device according to the first embodiment of the present invention, and FIG. Sectional drawing which shows the locking state of the locking device in the indoor / outdoor differential pressure canceling device according to the first embodiment of the invention, FIG. 3 is a locking device in the indoor / outdoor differential pressure canceling device according to the first embodiment of the present invention. FIG. 4 is a sectional view showing a state in which the air inlet is opened in conjunction with the unlocking operation of FIG. 4, and FIG. 4 shows the unlocked state of the locking device in the indoor / outdoor differential pressure canceling device according to the first embodiment of the present invention. Sectional drawing and FIG. 5 are plan views showing a rod in the indoor / outdoor differential pressure canceling apparatus according to the first embodiment of the present invention.

  The indoor / outdoor differential pressure canceling device 10 according to the first embodiment of the present invention includes a locking device 12 that is locked and unlocked by a rotation operation of a key or thumb turn 11, and a wind sampling port that is provided in an air flow passage that communicates indoors and outdoors. 13 and a door 15 having an opening / closing plate 14 for opening and closing the air inlet 13.

  The locking device 12 includes a lock case 16. The lock case 16 is formed in a square box shape and has an opening on one side, and a lid that closes the opening on one side of the case 17. 18 and a front 19. A dalma mounting hole 20 is formed in the lid 18 of the lock case 16, and a dead bolt guide shaft 21 and a swinging are formed in the upper lock case 16 with reference to the dharma mounting hole 20. A push-up piece rotating shaft 22 and a stopper piece fixed support shaft 23 are provided.

  On the other hand, a crank plate shaft 24, a crank plate stopper pin 25, a slider longitudinal guide notch 26, and a spring member fixed shaft 27 are provided in the lock case 16 below with respect to the Dalma mounting hole 20. ing. The lock case 16 is appropriately provided with other parts such as a guide part or a guide member, a mounting base plate, and a support plate, but the parts not related to the present invention are not shown.

  The lock case 16 is provided with a dharma 28 through a dharma mounting hole 20, and the dharma 28 is formed on a seat portion 29 formed to face the dharma mounting hole 20 of the lock case 16, for example. It is provided so as to be rotatable, and can be rotated by operating a key or thumb turn 11. Further, the dharma 28 is fitted to the receiving portion 29 and has a drum-shaped fitting portion 30 having an engagement hole in the center portion, and a driving arm extending in the radial direction of the peripheral wall of the fitting portion 30. 31 and drive teeth 32 provided along a circumferential direction on a part of the peripheral wall of the fitting portion 30.

  A dead bolt 33 is provided above the dharma 28. The dead bolt 33 has a block-shaped engaging head 35 guided by the opening 34 of the front 19 at the front end portion, and is located near the central portion or the rear end portion that is connected to the engaging head 35. A horizontal guide slot 36 is formed. In addition, a dead bolt guide shaft 21 that is horizontally mounted on the lock case 16 is inserted into the horizontal guide slot 36 in a penetrating manner, so that the dead bolt 33 can be advanced and retracted from the front 19 of the lock case 16. It has become. Further, the dead bolt 33 is provided with a first engagement notch portion 37 for selectively engaging the drive arm 31 of the dharma 28 on the upper portion of the hollow rear end portion, and further from the upper end surface of the hollow rear end portion to the center. A second engagement notch 38 is provided on the portion closer to the part. In addition, although not specifically illustrated, the sickle piece is united with the dead bolt 33 so that rotation is possible.

  Above the dead bolt 33, a stopper piece 39 is pivotally supported via a stopper piece fixed support shaft 23 laid horizontally on the lock case 16. The stopper piece 39 is pivotally supported on the stopper piece fixed support shaft 23, and the free end portion 40 of the stopper piece 39 engages with the upper engagement surface of the dead bolt 33. For example, as shown in FIG. When the locked state is reached, the backward movement of the dead bolt 33 is prevented. Further, an urging spring 41 for urging the stopper piece 39 in a direction to engage with the dead bolt 33 is wound around the fixed support shaft 23 for the stopper piece.

  A swing push-up piece 43 is connected to the drive arm 31 of the dharma 28 via a pivot pin 42. The swing push-up piece 43 moves up and down while swinging when the dharma 28 rotates, and thus the stopper is stopped. The piece 39 can be engaged with and disengaged from the upper engaging surface of the dead bolt 33. The swinging push-up piece 43 is formed in a ten-handed shape, and the long flange portion 44 penetrates the hollow rear end portion of the dead bolt 33 and the swinging push-up piece rotating shaft 22. The upper end of the penetrating long hook portion 44 is in contact with a plate-like contact portion 45 formed on the lower surface of the stopper piece 39, and a coil spring 46 is wound around the long hook portion 44.

  The crank plate shaft 24 is horizontally mounted on the center portion of the lock case 16, and a crank plate 47 is pivotally supported on the crank plate shaft 24. The crank plate 47 includes a disc portion 49 having a center hole 48 and a connecting portion 50 protruding in a radial direction from a part of the disc portion 49, and a part of the outer peripheral wall of the disc portion 49 includes A driven tooth 51 that meshes with the drive tooth 32 of the dharma 28 is formed in the circumferential direction. The connecting portion 50 is formed with a through hole 53 for the crank pin 52 and a curved contact surface 54 that contacts the crank plate stopper pin 25. Further, a pair of connecting plates 55 are provided so as to sandwich the connecting portion 50 of the crank plate 47, and an upper through hole 56 and a lower through hole 57 are formed at the upper end portion and the lower end portion of the connecting plate 55, respectively. The through hole 56 is provided so as to coincide with the through hole 53 of the connecting portion 50.

  A slider 58 is connected to the connecting plate 55 through a lower through hole 57 so as to be movable up and down. The slider 58 is made of a metal or a synthetic resin material, and includes a pair of support plates 60 formed in an upward U-shape from both sides of the lower plate 59. The slider 58 is vertically long on both side walls. A guide protrusion 61 that engages with the guide notch 26 is formed. In addition, a shaft hole 63 for the movable shaft 62 is formed at the center upper portion of the support plate 60, and a spring support rod 65 is laterally provided at the protruding end portion 64. Both projecting end portions of the movable shaft 62 project from the outer wall surface of the support plate 60, and engage with the vertically long guide notch 26 in the same manner as the guide projection 61. Further, a plurality of sliding contact projections 66 are formed on the outer wall surface of the support plate 60 at required intervals, and the slider 58 slides on the inner wall surface of the lock case 16 via these sliding contact projections 66. It has become.

  One end of a spectacle-shaped slider spring 67 is attached to the spring support rod 65, and the other end of the slider spring 67 is attached to a spring member fixing shaft 27 that is horizontally mounted on the lock case 16. . The slider spring 67 urges the slider 58 in a downward direction, and its central portion 68 is moved to a predetermined position in accordance with the up-and-down movement of the slider 58 (see FIGS. 2 and 4).

  A connecting female screw hole (not shown) is threaded at the center of the lower plate 59, and a male screw part 70 formed at the upper end of the rod 69 is removably screwed into the connecting female screw hole. Yes. Further, a pin hole 71 is formed in the lower end portion of the rod 69, and the upper end portions of the pair of opening and closing plates 14 are supported on both ends of the pin 72 inserted through the pin hole 71, respectively. As a result, the opening / closing plate 14 is provided so as to be movable up and down in the door 15 together with the rod 69. A plurality of openings 73 are horizontally formed in each opening / closing plate 14 at the same height and at the same interval, and the openings 74 are horizontally formed at the same height and at the same interval as the opening 73 of the opening / closing plate 14 in the air sampling port 13. Is formed.

  In the indoor / outdoor differential pressure canceling device 10 having such a configuration, when the locking device 12 is in the locked state shown in FIG. 2, the dead bolt 33 protrudes from the front 19 and the free end 40 of the stopper piece 39 is the dead bolt. It engages with the upper engagement surface of 33 and the backward movement of the dead bolt 33 is prevented. In this case, as shown in FIG. 1, the opening 73 of the opening / closing plate 14 and the opening 74 of the wind sampling port 13 are alternately shifted, and the wind sampling port 13 is closed by the opening / closing plate 14, so Air flow is blocked.

  When the key or thumb turn 11 is operated from this locked position to rotate the dharma 28 to the unlocked position shown in FIG. 4 (clockwise in the drawing), the drive arm 31 swings as it rotates. The upper end portion of the push-up piece 43 abuts against the plate-like contact portion 45 of the stopper piece 39, and the stopper piece 39 rotates upward about the stopper piece fixed support shaft 23 against the spring force of the biasing spring 41. . As a result, the free end 40 of the stopper piece 39 is separated from the upper engaging surface of the dead bolt 33, the dead bolt 33 is retracted into the lock case 16, and the locking device 12 is unlocked.

  On the other hand, as described above, when the dharma 28 rotates clockwise in the drawing, the crank plate 47 rotates counterclockwise in the drawing via the drive teeth 32 and the driven teeth 51, and the connecting plate 55 is rotated with the rotation of the connecting portion 50. Becomes tilted. When the connecting plate 55 is tilted, the slider 58 is linearly moved by sliding the guide projection 61 and the projecting both ends of the movable shaft 62 upwardly by being engaged and guided by the longitudinal guide notch 26 of the lock case 16. To rise. At this time, the sliding projection 66 of the support plate 60 of the slider 58 smoothes the sliding, so that the slider 58 rises smoothly.

  As the slider 58 rises, the rod 69 rises in the axial direction in the door 15, the opening / closing plate 14 fixed to the lower end of the rod 69 rises, and the opening 73 of the opening / closing plate 14 and the opening 74 of the air sampling port 13 Will be overlapped. Thereby, the indoor and outdoor air can be circulated through the openings 73 and 74, the pressure difference between the indoor and the outdoor is eliminated, and the door can be easily opened and closed.

  It should be noted that the mechanism of the locking device 12 and the mechanism for opening / closing the air inlet 13 by the opening / closing plate 14 described in the above embodiment are merely examples, and it goes without saying that various modifications are possible.

<Second Embodiment>
Hereinafter, the indoor / outdoor differential pressure canceling apparatus 10 according to the second embodiment of the present invention will be described with reference to FIGS. 6 to 11. For convenience of explanation, the indoor side of the door 15 is the front side (front side) of the indoor / outdoor differential pressure canceling apparatus 10, and the outdoor side of the door 15 is the back side (rear side) of the indoor / outdoor differential pressure canceling apparatus 10. In addition, about the structure of the locking device 12, since it is the same as that of 1st Embodiment, illustration and description are abbreviate | omitted.

  As shown in FIG. 6, the outer wall surface 75 of the door 15 is provided with a vertically-long rectangular outer opening 77 at a position spaced from the mouth end 76 by a predetermined distance, and an outdoor cover 78 is provided in the outer opening 77. It is attached. The outdoor cover 78 is provided with a number of slit-shaped outdoor vents 79 from the upper end to the lower end.

  As shown in FIG. 7, the inner wall surface 80 of the door 15 is provided with a vertically long rectangular inner opening 81 at a position closer to the butt 76 than the outer opening 77. A unit box 82 having an indoor opening is embedded in the inner opening 81 (see FIG. 8). An indoor cover 84 is attached to the unit box 82 so as to cover the opening. The indoor cover 84 is provided with a number of slit-shaped indoor vents 85 from the upper end to the lower end.

  As shown in FIG. 9, an insertion hole 86 is formed in the vertical direction at the right end portion of the upper end wall 83 of the unit box 82. Between the upper surface of the upper end wall 83 of the unit box 82 and the lower end surface of the lock case 16, a prismatic sponge block 87 having an insertion hole 88 formed in the vertical direction is fitted. A rod 69 is inserted through the insertion hole 88 of the sponge block 87 and the insertion hole 86 of the upper end wall 83, whereby the lower end portion of the rod 69 is inserted into the unit box 82. A slight gap is set between the outer periphery of the rod 69 and the inner periphery of the insertion hole 88 of the sponge block 87. On the left side plate 90 of the unit box 82, five vertically long rectangular air communication holes 91 are formed continuously in the vertical direction.

  In the unit box 82, a U-shaped frame 92 is accommodated. A left rectangular plate 93 of the frame body 92 is provided with side communication holes 94 having a vertically long rectangular shape at positions corresponding to the air communication holes 91 of the unit box 82. A packing 95 is disposed around each side communication hole 94 and each air communication hole 91. A space 96 in the packing 95 includes a space 97 formed on the left side of the unit box 82 in the door 15 (hereinafter referred to as “left space 97”), an outer opening 77 of the outer wall surface 75, It communicates with the outdoor space via the outdoor vent 79 of the outdoor cover 78 (see FIG. 8).

  On the left side of the front plate 100 and the back plate 101 of the frame 92, a vertically long rectangular communication hole 102 is formed at a height corresponding to each side communication hole 94, and the communication hole 102 of the front plate 100 and The space 98 inside the frame 92 communicates with the indoor space via the indoor vent 85 of the indoor cover 84 (see FIG. 9). The front plate 100 and the back plate 101 are provided with attachment holes 104 at positions corresponding to the upper left of the communication holes 102. The front plate 100 has three round holes 103 formed continuously in the vertical direction on the right side of each communication hole 102.

  A connecting plate 105 is attached to the right side of the frame body 92. The connecting plate 105 is provided with a plurality of notches 106 continuously in the vertical direction. An upper mounting portion 107 protrudes leftward from the upper edge of the second notch 106 from the top, and the upper end of the coil spring 108 is attached to the upper mounting portion 107.

  A pair of front and rear guides 110 are fixed on the right side inside the frame 92, and a slide bar 111 as an elevating member is accommodated in the guide 110 so as to be movable up and down. The slide bar 111 is formed with a vertical rectangular engagement hole 112 in the left-right direction at a height corresponding to each side communication hole 94 of the frame 92. A resin (POM) guide frame 113 is fixed around each engagement hole 112. Three holes 114 are provided at intervals between the engagement holes 112. The slide bar 111 is provided with a lower mounting portion 115 projecting rightward from the lower end of the third hole 114 from the top, and the upper end of the lower mounting portion 115 is connected to the upper mounting portion 107 as described above. The lower end of the coil spring 108 is connected. Accordingly, the slide bar 111 is biased upward by the biasing force of the coil spring 108.

  The upper end portion of the slide bar 111 is connected to the lower end portion of the rod 69 via the connecting fitting 116. As shown in FIG. 10, the connecting metal fitting 116 has a horizontal plate 118 having a U-shaped fitting groove 117 at the right end portion, and is bent downward from the front end portion of the horizontal plate 118 and is paired with upper and lower pairs. And a vertical plate 121 having a screw hole 120. Then, the annular groove 122 provided on the outer periphery of the lower end of the rod 69 is fitted into the fitting groove 117 of the horizontal plate 118, and the pair of upper and lower screw holes 123 of the slide bar 111 and the pair of upper and lower screw holes 120 of the connecting bracket 116 are fitted. By inserting the screw 124, the rod 69 and the slide bar 111 are connected through the connecting metal fitting 116. Thus, the slide bar 111 is configured to move up and down in the frame 92 as the rod 69 moves up and down.

  In the frame body 92, a total of five open / close plates 14 are provided in the vertical direction on the left side of the slide bar 111 and at a height corresponding to each side communication hole 94. Each of the opening / closing plates 14 is provided with a pair of front and rear longitudinally attached mounting plates 126, a closing plate 127 that connects the left end portions of the front and rear pair of mounting plates 126, and protruding upward from the upper portion of the mounting plate 126. Engaging protrusion 128.

  The mounting plate 126 is provided with an upper curved portion 130 at the upper right end portion and a lower curved portion 131 at the lower right portion. A shaft support pin hole 132 is formed on the left side of the upper end of the mounting plate 126. By inserting the shaft support pin 133 into the shaft support pin hole 132 and the mounting hole 104 of the frame body 92, the frame body is formed. Each opening / closing plate 14 is pivotally supported by 92, and each opening / closing plate 14 is configured to rotate between the vertical posture (see FIG. 9) and the inclined posture (see FIG. 11) with the upper end side as a fulcrum. . A large number of round holes 134 having different sizes are formed in the mounting plate 126 over the entire surface.

  The closing plate 127 is formed in a vertically long rectangular shape. As shown in FIG. 8, the closing plate 127 includes an outdoor vent 79, a left space 97, a space 96 inside the packing 95, a space 98 inside the frame body 92, and a communication hole in the front plate 100. 102 and an air flow passage 139 including the indoor vent 85. When each open / close plate 14 is in a vertical posture (see FIG. 9), the closing plate 127 is in close contact with the packing 95 to close the air flow passage 139, and each open / close plate 14 is in an inclined posture (see FIG. 9). 11), the closing plate 127 is separated from the packing 95 and the air flow passage 139 is opened.

  The engagement protrusion 128 is engaged with each engagement hole 112 provided in the slide bar 111 so as to be movable up and down. A resin (POM) cap 136 is attached to the engagement protrusion 128, and both front and rear side portions of the cap 136 are in sliding contact with the left and right side portions of the guide frame 113 attached to each engagement hole 112. It is close. A central notch 137 is provided at the front end surface of the cap 136 at the center in the vertical direction.

  In the indoor / outdoor differential pressure canceling device 10 having such a configuration, when the locking device 12 is in a locked state, the upper edge portion of the guide frame 113 and the upper surface of the cap 136 abut as shown in FIG. Thus, the rotation of the opening / closing plate 14 is restricted, and the vertical posture of the opening / closing plate 14 is maintained. Therefore, the closing plate 127 of the opening / closing plate 14 is in close contact with the packing 95 to close the air flow passage 139, and the communication between the air inside and outside the room is blocked.

  When the locking device 12 is shifted from the locked state to the unlocked state, the rod 69 rises in the door 15 by the same action as in the first embodiment, and the slide bar 111 connected to the rod 69 also rises. . As the slide bar 111 is lifted, the contact state between the upper edge of the guide frame 113 and the upper surface of the cap 136 is released. When the slide bar 111 is further raised, the lower edge of the guide frame 113 and the lower surface of the cap 136 come into contact with each other, and the slide bar 111 around the engagement hole 112 moves the engagement protrusion 128 through the guide frame 113 and the cap 136. Push up. As shown in FIG. 11, the push-up plate 14 rotates in a direction to open the air flow passage 139 and shifts to an inclined state. As a result, the closing plate 127 of the open-close plate 14 moves from the packing 95. Separation allows communication between indoor and outdoor air. Thereby, the pressure difference between the inside and outside of the room is eliminated, and the door 15 can be easily opened and closed.

  When the locking device 12 is shifted again from the unlocked state to the locked state, the rod 69 is lowered in the door 15 by the same action as in the first embodiment, and the slide bar 111 connected to the rod 69 is also lowered. To do. By this downward movement, the push-up of the engagement protrusion 128 by the slide bar 111 around the engagement hole 112 is released. When the slide bar 111 further rises, the upper edge of the guide frame 113 and the upper surface of the cap 136 come into contact with each other, and the slide bar 111 around the engagement hole 112 moves the engagement protrusion 128 through the guide frame 113 and the cap 136. Press down. By this pressing, as shown in FIG. 9, the opening / closing plate 14 rotates in a direction to close the air flow passage 139 and shifts to a vertical state, and the closing plate 127 of the opening / closing plate 14 is in close contact with the packing 95, Communication between indoor and outdoor air is blocked.

  In the present embodiment, as described above, the air flow passage 139 is opened and closed by the plurality of opening and closing plates 14 that can rotate around the upper end side. By adopting such a configuration, the cross-sectional area of the portion opened and closed by the open / close plate 14 can be made wider than the configuration in which the open / close plate 14 is slid as in the case of the first embodiment. . For this reason, the air flow in the air flow passage 139 becomes good, and the effect of eliminating the differential pressure inside and outside the room can be further enhanced.

  Further, in the present embodiment, since the opening / closing plate 14 is arranged in the vertical direction in the frame 92, the opening / closing plate 14 is provided with the door 15 as compared with the case where the opening / closing plate 14 is arranged in the left / right direction or oblique direction. Protruding from both the wall surfaces 75 and 80 can be suppressed. Therefore, it is possible to improve the appearance of the entire door 15.

  In the present embodiment, the engagement protrusions 128 provided on the opening / closing plate 14 are engaged with the engagement holes 112 provided on the slide bar 111. By adopting such a configuration, it is possible to change the push-up width of the engagement protrusion 128 by appropriately adjusting the vertical width of the engagement hole 112, and accordingly, the air flow passage 139 is opened. The degree can be set freely.

  Further, when the rod 69 and the slide bar 111 are raised, the rod 69 and the slide bar 111 are pushed up in the direction opposite to the load direction, so that a larger force than when the rod 69 and the slide bar 111 are lowered is used. Is required. In this respect, in the present embodiment, since the slide bar 111 is biased upward by the coil spring 108, the force necessary to raise the rod 69 and the slide bar 111 is reduced, and both members can be easily raised. Can be done. In the present embodiment, the coil spring 108 is interposed between the slide bar 111 and the frame 92. However, the coil spring 108 can be any one as long as it can bias the slide bar 111 upward. It may be arranged at a place.

  In the present embodiment, the configuration in which the engagement protrusion is pushed up by the slide bar 111 is adopted. However, in another different embodiment, the opening / closing plate 14 is arranged in a direction in which the air flow passage 139 is opened by a biasing member (not shown). When the rod 69 is raised, the opening / closing plate 14 may be rotated in a direction to open the air flow passage 139 by the urging force of the urging member.

  In this embodiment, the air flow passage 139 is formed between the outer opening 77 provided on the outer wall surface 75 of the door 15 and the inner opening 81 provided on the inner wall surface 80 of the door 15. In a different embodiment, a door mouth opening (not shown) may be provided in the door mouth 76, and the air flow passage 139 may be formed between the mouth opening and the inner opening 81. In this case, the structure which arrange | positions the opening-and-closing board 14 along a mouth end side opening part may be sufficient.

<Third Embodiment>
Hereinafter, an indoor / outdoor differential pressure elimination device 10 according to a third embodiment of the present invention will be described with reference to FIGS. For convenience of explanation, the indoor side of the door 15 is the front side (front side) of the indoor / outdoor differential pressure canceling apparatus 10, and the outdoor side of the door 15 is the back side (rear side) of the indoor / outdoor differential pressure canceling apparatus 10. In addition, about the structure of the locking device 12, since it is the same as that of 1st Embodiment, illustration and description are abbreviate | omitted.

  At the lower part of the door 15, a horizontally long rectangular communication opening 138 is provided from the outer wall surface 75 to the inner wall surface 80, and a horizontally long storage box 141 is attached to the communication opening 138 via a packing 140. Yes. The storage box 141 is open on the front side, and the rear portion of the storage box 141 projects outward. A horizontally long cover 142 is attached to the inner wall surface 80 of the door 15 so as to cover the opening of the storage box 141 (see FIG. 12). The cover 142 is provided with a number of slit-shaped vents 143 from the left end to the right end. In FIG. 13, the cover 142 is not shown.

  A spring mounting plate 145 is attached to the right end of the top plate 144 of the storage box 141, and an upper end of a coil spring 147 as an urging member is attached to an upper mounting screw 146 fixed to the spring mounting plate 145. It has been. As best shown in FIG. 14, an insertion hole 148 is formed in the right end front side of the top plate 144 of the storage box 141. An annular sponge ring 149 is fitted between the upper surface of the top plate 144 of the storage box 141 and the upper end wall 155 of the communication opening 138, and an insertion hole 150 is formed in the sponge ring 149 in the vertical direction. . A rod 69 is inserted through the insertion hole 150 of the sponge ring 149 and the insertion hole 148 of the top plate 144, whereby the lower end portion of the rod 69 is inserted into the storage box 141. A slight gap is set between the outer periphery of the rod 69 and the inner periphery of the insertion hole 150 of the sponge ring 149. A female screw portion 151 is provided at the lower end portion of the rod 69.

  A push plate 152 as an elevating member is connected to the lower end portion of the rod 69. A bolt hole 153 is formed in the front end portion of the push plate 152 in the vertical direction, and a bolt 154 inserted through the bolt hole 153 is screwed into the female screw portion 151, whereby the push plate is fitted to the lower end of the rod 69. 152 are connected.

  As shown in FIG. 15, the bottom plate 156 of the storage box 141 is provided with a pair of left and right vent openings 157 in the shape of a horizontally long rectangle, and is stored via the vent openings 157 as shown in FIG. A space 158 in the box 141 communicates with the outdoor space. A packing 160 is disposed on the bottom plate 156 of the storage box 141 along the outer periphery of each ventilation opening 157, and a frame member 161 is attached so as to cover the upper surface of the packing 160.

  In the storage box 141, a horizontally long rectangular opening / closing plate 14 is provided above the pair of ventilation openings 157. Bending portions 162 are provided upward at the front edge portion and both side edge portions of the opening / closing plate 14, respectively, and through holes 163 are provided at the rear ends of the bending portions 162 at both side edge portions (see FIG. 16).

  A rotation shaft 165 fixed by a plurality of fixing screws 164 (see FIG. 13) is inserted into each insertion hole 163 at the rear end portion of the opening / closing plate 14. The rotary shaft 165 is pivotally supported via a guide bush 167 on plate members 166 erected on both the left and right ends of the bottom plate 156 of the storage box 141, whereby the opening / closing plate 14 is inclined (see the solid line in FIG. 16). It is configured to rotate about the rear end side as a fulcrum between the horizontal position (see the two-dot chain line portion in FIG. 16) and the horizontal posture.

  As shown in FIG. 16, the opening / closing plate 14 is provided in an air flow passage 169 including a space 159 inside the packing 160, a space 158 inside the storage box 141, and a vent 143 of the cover 142. ing. When the opening / closing plate 14 is in a horizontal position, the opening / closing plate 14 is in close contact with the packing 160 to close the air flow passage 169, and when the opening / closing plate 14 is in an inclined position, the opening / closing plate 14 extends from the packing 160. Are separated and the air flow passage 169 is opened.

  An arm member 168 is integrally provided on the opening / closing plate 14 so as to rotate. The arm member 168 is fixed to the right end portion of the rotation shaft 165. As shown in FIG. 14, a pair of upper and lower sandwiching pieces 170 is provided on the rear side of the arm member 168. On the lower surface of the upper sandwiching piece 170 and the upper surface of the lower sandwiching piece 170, a sandwiching portion 171 having a U-shaped cross section is provided. Tightening bolt holes 172 are formed in the rear ends of the pair of upper and lower clamping pieces 170, respectively. The arm member 168 is fixed to the rotating shaft 165 by tightening the tightening bolt 173 into the tightening bolt hole 172 with the right end portion of the rotating shaft 165 inserted between the sandwiching portions 171.

  On the front side of the arm member 168, a pair of left and right roller mounting plates 174 are provided. A pin 176 is installed on the front lower portion of the pair of left and right roller mounting plates 174, and a roller 177 is pivotally supported on the pin 176. The upper end of the roller 177 is in contact with the lower surface of the push plate 152.

  A lower mounting screw 178 is fixed to the front upper portion of the left roller mounting plate 174, and the lower mounting screw 178 is mounted with the lower end of the coil spring 147 whose upper end is mounted on the upper mounting screw 146 as described above. As a result, the opening / closing plate 14 is biased in a direction to open the air flow passage 169 via the arm member 168 and the rotating shaft 165.

  In the indoor / outdoor differential pressure canceling device 10 having such a configuration, when the locking device 12 is in the locked state, the push plate 152 pushes down the roller 177 and the rotation of the opening / closing plate 14 is restricted. (See the two-dot chain line in FIGS. 14 and 16). Therefore, the opening / closing plate 14 is in close contact with the packing 160 to close the air flow passage 169, and the communication between the air inside and outside the room is blocked.

  When the locking device 12 is shifted from the locked state to the unlocked state, the rod 69 rises in the door 15 by the same action as in the first embodiment, and the push plate 152 connected to the rod 69 also rises. . Therefore, the pressing of the roller 177 by the push plate 152 is released. Along with this, the opening / closing plate 14 rotates in a direction to open the air flow passage 169 by the urging force of the coil spring 147 and shifts to an inclined position, and the opening / closing plate 14 is separated from the packing 160, so Communication is possible. Thereby, the pressure difference between the inside and outside of the room is eliminated, and the door 15 can be easily opened and closed.

  When the locking device 12 is shifted again from the unlocked state to the locked state, the rod 69 is lowered in the door 15 by the same action as in the first embodiment, and the push plate 152 connected to the rod 69 is also lowered. To do. Along with this, the lower surface of the push plate 152 presses the upper end of the roller 177 to push down the roller 177. As a result, the opening / closing plate 14 rotates in a direction to close the air flow passage 169 against the urging force of the coil spring 147 and shifts to a horizontal state. Is disconnected.

  In the present embodiment, as described above, the air flow passage 169 is opened and closed by the opening and closing plate 14 that can rotate around the rear end side as a fulcrum. By adopting such a configuration, the cross-sectional area of the portion opened and closed by the open / close plate 14 can be made wider than the configuration in which the open / close plate 14 is slid as in the case of the first embodiment. . Therefore, the air flow in the air flow passage 169 is improved, and the effect of eliminating the differential pressure inside and outside the room can be further enhanced.

  In the present embodiment, since the roller 177 is pushed down by the push plate 152, the friction between the push plate 152 and the roller 177 is reduced by the rotation of the roller 177 in accordance with the above-described pressing. The Therefore, it is possible to smoothly press the roller 177 by the push plate 152.

10 Indoor / outdoor differential pressure canceling device 11 Thumb turn 12 Locking device 13 Air sampling port (air flow passage)
14 Opening / closing plate 15 Door 16 Lock case 19 Front 28 Dalma 31 Drive arm 32 Drive tooth 33 Deadbolt 47 Crank plate 51 Driven tooth 58 Slider 69 Rod 111 Slide bar (elevating member)
112 engaging hole 128 engaging protrusion 147 coil spring (biasing member)
152 Push plate (elevating member)
177 Laura

Claims (5)

A door provided with a locking device that locks and unlocks the dead bolt by moving forward or backward from the front of the lock case by rotating the key or thumb-turn, an air flow passage that communicates indoors and outdoors, and an opening / closing plate that opens and closes the air flow passage An indoor / outdoor differential pressure canceling device provided,
The locking device and the opening / closing plate are connected to each other, and provided with a rod that moves in the axial direction in conjunction with the rotation operation of the key or thumb turn to move the opening / closing plate, and the rod is used to lock the locking device. The opening / closing plate is moved in the direction to close the air flow passage in conjunction with the unlocking operation of the locking device, and the opening / closing plate is moved in the direction to open the air flow passage in conjunction with the unlocking operation of the locking device. The indoor / outdoor differential pressure canceling device.   The locking device has a driving arm that extends in the radial direction and is connected to a rear end portion of the dead bolt, and has a driving tooth in the circumferential direction and rotates in conjunction with the rotation operation of the key or thumb turn. A crank plate that has driven teeth meshing with the drive teeth of the dharma in the circumferential direction and that rotates with the rotation of the dharma, and a slider that is connected to the crank plate and moves up and down with the rotation of the crank plate 2. The indoor / outdoor differential pressure canceling device according to claim 1, wherein an upper end of the rod is coupled to a lower end of the slider, and the rod is provided so as to be movable up and down together with the slider. An elevating member connected to the lower end of the rod, and the opening and closing plate that is pressed by the elevating member and is rotatable about one end side,
When the rod rises, the elevating member rises and the opening and closing plate rotates in a direction to open the air flow path,
3. The indoor / outdoor differential pressure canceling device according to claim 1, wherein when the rod descends, the opening / closing plate rotates in a direction in which the elevating member descends to close the air flow passage. The elevating member is a slide bar provided with an engagement hole,
The opening / closing plate is provided with an engagement protrusion that engages with the engagement hole so as to be movable up and down,
When the rod is raised, the opening / closing plate rotates in a direction in which the slide bar around the engagement hole pushes up the engagement protrusion to open the air flow passage,
The indoor / outdoor differential pressure according to claim 3, wherein when the rod is lowered, the opening / closing plate rotates in a direction in which the slide bar around the engagement hole pushes down the engagement protrusion to close the air flow passage. Cancellation device. The elevating member is a push plate coupled to the rod;
The opening / closing plate is urged in a direction to open the air flow passage by a urging member while supporting a roller.
When the rod descends, the push plate pushes down the roller, and the opening / closing plate rotates in a direction to close the air flow passage against the urging force of the urging member,
4. The room according to claim 3, wherein when the rod is lifted, the push-down of the roller by the push plate is released, and the opening / closing plate rotates in a direction to open the air flow passage by the biasing force of the biasing member. External pressure relief device.