JP6267966B2 - Inundation prevention device for ventilation opening - Google Patents

Description

  The present invention relates to an inundation prevention device for a ventilation port for ventilating air in an underground structure.

  The ventilation opening for ventilating the air in the underground structure is always open, but when there is a risk of rainwater entering from this ventilation opening, the lid member provided in the ventilation opening can be closed. An inundation prevention device is installed.

  As an inundation prevention device for the ventilation port, a lid member is attached to the lower side of the frame member provided in the ventilation port, and the lid member is turned upward from below to turn the lid member upward to close the ventilation port. Infiltration prevention devices are common (see, for example, Patent Documents 1-6).

  On the other hand, there is also a downward-closed type flood prevention device that attaches a lid member to the upper side of the frame member and closes the ventilation port by rotating or lowering the lid member from above to below (see, for example, Patent Documents 7-9). .

Japanese Utility Model Publication No. 51-14605 Japanese Patent Publication No. 52-28492 No. 03-52320 Japanese Utility Model No. 06-40863 Japanese Patent No. 3105835 Japanese Patent No. 4873498 gazette Japanese Patent Publication No.57-15280 No. 03-27120 Utility Model Registration No. 2601303

  The upward-closed flood prevention device requires a strong force when closing the lid member, and the downward-closed flood prevention device requires a strong force when opening the lid member. The number of lid members that can be reliably opened and closed by the drive source is limited to one. For this reason, it cannot respond to a large ventilation opening.

  The present invention has been made in view of the above points, and provides a flood prevention device for a ventilation opening that can cope with an increase in the size of a ventilation opening by allowing a plurality of lid members to be opened and closed with a single drive source in a balanced manner. The purpose is to provide.

The invention described in claim 1 is supported by the frame member installed in the longitudinal ventilation port, the drive unit mounting member attached to the center of the frame member and suspended, and the drive unit mounting member. Elevating drive unit, a link mounting member that is driven up and down by the elevating drive unit, a plurality of links that are symmetrically coupled to the link mounting member with the link mounting member interposed therebetween, and a central portion of the frame member A plurality of lid members that are pivotally supported on the upper side and opened and closed with respect to the frame member above the frame member by the plurality of links, respectively, and the elevating drive unit generates forward and reverse rotational forces. A rotation driving device portion to be rotated, a screw shaft portion rotated at a fixed position by the rotation driving device portion, an elevating cylinder portion screwed and screwed with the screw shaft portion, and an extension of the screw shaft portion. Integrated into Is provided with a rotating shaft portion, the link mounting member in the lifting cylinder unit is integrated, the rotation shaft portion, prevent flooding of freely retained vent rotated by a bearing portion attached to said frame member Device.

According to a second aspect of the present invention, there is provided a frame member in the ventilating inundation preventing device according to the first aspect, wherein the frame member spans the central portion of the frame member, and one side portion sandwiching the beam portion. And the one-side frame portion and the other-side frame portion that are integrally provided on the other side portion, and the drive portion mounting member is formed in a rectangular tube shape that fits within the beam portion in plan view. The elevating drive unit is mounted in the lower part of the drive unit mounting member, and the lid member is a lid member on one side that can be opened and closed with respect to the frame part on one side and the frame part on the other side, respectively. the other side of the lid member is Ru flooding prevention device der vents which are respectively pivotally supported on said beam portion.

According to a third aspect of the present invention, there is provided a lid member in the ventilation port inundation preventing device according to the first or second aspect , wherein the lid member has a drain hole for draining water accumulated on the upper side of the lid member to the lower side. A drainage valve that opens and closes the drainage hole and a link connecting shaft that is positioned below the drainage valve. The drainage valve moves up and down above the lid member to open and close the drainage hole. A main body, a valve stem projecting from the valve body through the lid member to the lower side of the lid member, a pressed part provided at a lower end of the valve stem and facing an upper end of the link; The link is a water intrusion prevention device for a ventilation opening having a long hole loosely fitted in the vertical direction with the link connecting shaft of the lid member.

According to a fourth aspect of the present invention, the frame member and the lid member in the ventilating inundation prevention device according to any one of the first to third aspects are formed so as to cut diagonally square corners in plan view. And an infiltration preventing device for a ventilation opening, comprising a seal member disposed endlessly along one of the surfaces of the frame member and the lid member that contact each other.

According to a fifth aspect of the present invention, the frame member and the lid member of the ventilating inundation prevention device according to any one of the first to fourth aspects are inclined so as to incline downward toward the central portion at the peripheral edge portions that contact each other. A ventilation port infiltration prevention device including a sealing member provided with a surface and endlessly disposed on an inclined surface of the lid member along the peripheral edge of the lid member.

According to the first aspect of the present invention, the elevating drive unit is supported by the drive unit mounting member that is attached to the central portion of the frame member and is suspended, and the link mounting member that is driven up and down by the elevating drive unit is provided with the link. A plurality of links are axially connected symmetrically across the mounting member, and a plurality of lid members that are opened and closed by these links are respectively pivotally supported on the central portion of the frame member, so that the lower side of the central portion of the frame member A plurality of lid members can be smoothly opened and closed in a balanced manner through a plurality of links by a single lifting drive unit located in the position, which can cope with an increase in the size of a ventilation port. In addition, the plurality of lid members are pivotally supported on the center portion of the frame member, and are opened and closed with respect to the frame member on the upper side of the frame member. It is possible to smoothly close the ventilation port by lowering the lid member without countering. Further, the elevating drive unit includes a rotation drive device portion, a screw shaft portion rotated by the rotation drive device portion, and an elevating cylinder portion screwed and screwed with the screw shaft portion. Since the link attachment member is integrated with the tube portion, the elevation drive unit can be formed to be elongated and compact to drive the link attachment member up and down. Further, the elevation drive unit is integrally formed on the extension of the screw shaft portion. Since the rotation shaft portion provided is provided, and this rotation shaft portion is rotatably held by the bearing portion attached to the frame member, the operation stability of the elevating drive unit can be ensured.

According to the second aspect of the present invention, the driving portion mounting member is formed in a rectangular tube shape that fits within the range of the beam portion of the frame member in plan view, and is attached to the beam portion. The lid drive unit is attached to the frame, and the lid member on one side and the lid member on the other side that are openable and closable with respect to the frame portion on one side and the frame portion on the other side sandwiching the beam portion are respectively pivoted on the beam portion. Because it was supported, the elevating drive unit can be arranged compactly via the drive part mounting member on the lower side of the beam part, and relatively large opening area can be secured in the frame part on one side and the frame part on the other side, Ru can respond to the increase in the size of the ventilation openings.

According to invention of Claim 3, when opening a cover member in the state where water collected on the upper side of the cover member, the link provided with the long hole which loosely fits with the link connecting shaft of a cover member in the up-and-down direction first. After hitting the pressed part of the drain valve, the valve shaft part of the drain valve is pushed up to open the valve body, and the water accumulated on the upper side of the lid member is discharged downward from the drain hole. Since the lid member is opened by pushing up, the water pressure applied to the upper surface of the lid member in the closed state can be eliminated, and then the lid member can be opened with a relatively light force as compared with the case of hydraulic action. Further, the drain valve can be operated prior to the opening operation of the lid member by only the link raising operation without using a sequence circuit or the like.

According to the invention of claim 4 , since the frame member and the lid member are formed in a shape in which square corners are cut obliquely in plan view, all the corner parts in plan view of the frame member and lid member are Compared to the case where the frame member and the lid member are quadrangular in plan view, excessive bending of the seal member at the corners of the frame member and the lid member can be prevented. Sealing performance such as adhesion to the abutting surface can be improved.

According to the fifth aspect of the present invention, since the inclined surface inclined downward toward the center is provided at the peripheral edge where the frame member and the lid member abut each other, the downward inclined inclination provided at the peripheral edge of the frame member is provided. The slanted surface can smoothly drop trash contained in rainwater, etc. along with rainwater and the sealing member on the lid member side in the open state does not hinder the fall of trash contained in rainwater, etc. It is difficult for dust to collect on the member, and it is possible to prevent the dust from hindering the closing of the lid member.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front cross-sectional view showing an embodiment of a water leakage prevention device for a ventilation opening according to the present invention. It is a sectional side view of a prevention apparatus same as the above. It is a top view of a prevention apparatus same as the above. It is sectional drawing which shows the raising / lowering drive unit principal part of a prevention apparatus same as the above. It is sectional drawing which shows the drain valve of a prevention apparatus same as the above. It is sectional drawing which shows the peripheral part of the frame member and lid member of a prevention apparatus same as the above. It is sectional drawing of the rain-water amount detection apparatus for starting a prevention apparatus same as the above. It is a partial rear view of a detection apparatus same as the above.

  Hereinafter, the present invention will be described in detail based on one embodiment shown in FIGS.

  As shown in FIG. 1 and FIG. 2, a vertical ventilation port 12 is opened on the road surface 11, a metal grid 13 is provided on the opening edge of the ventilation port 12, and a lower amount than that of the ventilation port 12. An infiltration prevention device 14 is provided to prevent intrusion of rainwater.

  The infiltration preventing device 14 for the ventilation port 12 has a frame member 21 installed in the ventilation port 12, and a drive unit mounting member 22 is attached to the central portion of the frame member 21 to hang down. The lifting drive unit 23 is supported, and the lower ends of the links 25 are pivotally connected to a link mounting member 24 that is driven up and down by the lifting drive unit 23 in a symmetrical manner with the link mounting member 24 interposed therebetween. A plurality of lid members 28 are pivotally supported by the respective pivotal support shafts 26 on the central portion of the frame member 21, and these lid members 28 are connected to the respective links by the plurality of links 25. It is opened and closed with respect to the frame member 21 above the frame member 21 via the shaft 27.

  The drive unit mounting member 22 is provided with a plurality of slits 22s at locations corresponding to the lifting path of the link mounting member 24. Each link connecting shaft 27 is attached between two ribs 29 provided on the lower surface of each lid member 28 as shown in FIG.

  As shown in FIG. 1 to FIG. 3, the frame member 21 is integrally formed with a beam portion 31 spanning the central portion of the frame member 21 and one side portion and the other side portion across the beam portion 31. The drive part mounting member 22 is formed in a rectangular tube shape that fits within the range of the beam part 31 in plan view, and is attached to the beam part 31. A lift drive unit 23 is mounted in the lower part of the drive unit mounting member 22.

  Further, the lid member 28 on one side and the lid member 28 on the other side that can be opened and closed with respect to the frame portion 32 on the one side and the frame portion 32 on the other side, respectively, are provided in two ribs on their upper surfaces. The portion 33 is pivotally supported by a pair of mounting plates 34 projecting on the beam portion 31 by respective pivotal support shafts 26.

  As shown in FIG. 3, the frame member 21 and the lid member 28 are formed in a shape in which square corners 21 a and 28 a are cut obliquely in a plan view, and the surfaces of the frame member 21 and the lid member 28 that abut each other. A seal member (described in detail later) is provided along one of the endlessly.

  As shown in FIGS. 1 and 2, the elevating drive unit 23 includes a rotation drive unit 35 including an electric motor 35 a and a speed reducer 35 b that generate forward and reverse rotational forces, and a pair of mounting screws 36. As shown in FIG. 4, a screw shaft portion 37 that is rotationally driven at a fixed position by the rotational drive device portion 35 and is screwed to the screw shaft portion 37 as shown in FIG. And an elevating cylinder part 38 provided with a female screw part 38a to be screwed and a rotating shaft part 39 provided integrally on the extension of the screw shaft part 37, and the link attaching member is provided on the elevating cylinder part 38. 24, and the rotating shaft 39 is rotatably held by a bearing 40 attached to the frame member 21 as shown in FIGS. The elevating cylinder portion 38 moves up and down without rotating by a non-rotating guide (not shown).

  As shown in FIG. 5, the lid member 28 includes a plurality of drain holes 41 for draining water accumulated on the upper side of the lid member 28, and a drain valve for opening and closing these drain holes 41. 42 and the link connecting shaft 27 positioned below the drain valve 42, and the drain valve 42 moves up and down above the lid member 28 to open and close the drain hole 41. 43, a valve shaft portion 44 projecting from the valve body portion 43 through the lid member 28 to the lower side of the lid member 28, provided at a lower end of the valve shaft portion 44 and opposed to an upper end of the link 25. The link 25 includes a long hole 46 that loosely fits with the link connecting shaft 27 of the lid member 28 in the vertical direction.

  As shown in FIG. 6, the frame member 21 and the lid member 28 have L-shaped cross-section frame portions 53 and 54 having inclined surfaces 51 and 52 that are inclined downward toward the center at the peripheral edge portions that are in contact with each other. The seal member 55 is attached endlessly on an inclined surface 52 that is obliquely downward of the frame portion 54 along the peripheral edge portion of the lid member 28. The seal member 55 is held in place by a pair of holding plates 56 and 57 attached to the inclined surface 52 of the frame portion 54.

  7 and 8 show a storm water amount detection device 61, and a storm water storage tank portion 65 having a swash plate portion 63 and a dam plate portion 64 is attached to a wall surface by a pair of attachment members 62. A grating 66 for removing dust is provided on the upper side of the tank portion 65. A triangular hole 67 is provided in the dam plate portion 64, and an electrode box 68 is attached to the upper side of the triangular hole 67, and a pair of electrodes 69 protruding from the electrode box 68 are disposed at positions facing the triangular hole 67. Has been.

  Next, the operation of the illustrated embodiment will be described.

  When there is no rainfall, or even if there is rainfall, the flow rate of rainwater flowing into the rainwater storage tank portion 65 through the grating 66 shown in FIG. If it is less than the amount of rainwater, the distance between the tips of the pair of electrodes 69 is left open, and as shown by the two-dot chain line in FIG. 1 or as shown in FIG. Is in the raised position, the lid member 28 is pushed up by the link 25 and pivoted upward, and the opening of the frame member 21 is open.

  In addition, rainwater flowing into the rainwater storage tank section 65 flows out through the triangular hole 67. However, when the amount of rainwater flowing into the rainwater storage tank section 65 increases, the rainwater surface L in the rainwater storage tank section 65 rises and one pair The tip of the electrode 69 is contacted. Then, a rainwater amount detection signal notifying that the amount of rainwater is equal to or greater than a certain flow rate is sent to a control panel (not shown) through a lead wire.

  The control panel drives the electric motor 35a of the elevating drive unit 23 shown in FIGS. 1 and 2, and rotates the screw shaft portion 37 shown in FIG. 4 at a fixed position. The elevating tube portion 38 screwed by the screw portion 38a and the link mounting member 24 integrated with the elevating tube portion 38 are lowered, and the lid members 28 are pulled down by the links 25 as shown by solid lines in FIG. Then, each lid member 28 is brought into close contact with each frame portion 32 of the frame member 21, and the opening of the frame member 21 is closed.

  At this time, as shown in FIG. 6, the sealing member 55 of each lid member 28 is pressed against the inclined surface 51 of each frame member 21 that descends, so that the watertightness between each frame member 21 and each lid member 28 is reduced. Thus, the opening of the vent 12 is closed to prevent rainwater from entering the vent 12.

  On the other hand, when opening the cover member 28 on the one side and the cover member 28 on the other side to open the opening of the ventilation port 12, the screw motor 37a is rotated in the reverse direction by rotating the electric motor 35a of the elevating drive unit 23 in the reverse direction. As a result, when the lifting cylinder part 38 and the link mounting member 24 integrated with the lifting cylinder part 38 are raised, only the pair of links 25 rises as shown by a two-dot chain line in FIG. Then, the drainage valves 42 respectively provided on the pair of lid members 28 are pushed up by the tips of these links 25 to separate the valve main body portions 43 from the upper surface of the lid member 28, and these lid members Rainwater accumulated on the upper side of 28 is discharged downward from the drain hole 41. Thereby, the water pressure acting on the upper surface of the lid member 28 is eliminated.

  Further, when the lower end of the long hole 46 of each link 25 hits the link connecting shaft 27 of each lid member 28, each link 25 pushes up each lid member 28, so that each lid member 28 is shown in FIG. As shown by the above, the air vent 12 is opened by pivoting upward about the pivot shaft 26 on the beam 31.

  Next, effects of the illustrated embodiment are listed.

  A lifting drive unit 23 is supported by a drive part mounting member 22 attached to and hung from the center of the frame member 21, and the link mounting member 24 is sandwiched by a link mounting member 24 that is driven up and down by the lifting drive unit 23. Thus, the pair of links 25 are axially connected in a symmetrical manner, and the pair of lid members 28 that are opened and closed by these links 25 are respectively pivotally supported on the central portion of the frame member 21. One lifting drive unit 23 located at the lower side of the center part can open and close a pair of lid members 28 in a balanced and smooth manner through these links 25 while receiving equal loads from left and right symmetrical links 25. Thereby, it can respond to the enlargement of the ventilation port 12. FIG.

  Further, the pair of lid members 28 are pivotally supported on the beam portion 31 at the center of the frame member 21 by the respective rotation support shafts 26, and on one side of the frame member 21 and the other side above the frame member 21. Since the frame 32 on the side is opened and closed, the lid 12 can be smoothly closed by smoothly lowering the lid members 28 against the rainwater flow even when the amount of rainfall increases rapidly.

  The drive part mounting member 22 is formed in a rectangular tube shape that fits within the range of the beam part 31 provided in the central part of the frame member 21 in plan view, and is attached to the beam part 31, and the lower part of the drive part mounting member 22 An elevating drive unit 23 is mounted therein, and one side lid member 28 and the other side lid member 28 that can be opened and closed with respect to the one side frame portion 32 and the other side frame portion 32 provided with the beam portion 31 interposed therebetween. Are supported on the beam portion 31, so that the elevating drive unit 23 can be compactly arranged on the lower side of the beam portion 31 via the drive portion mounting member 22. A large opening area can be secured in the frame portion 32 on the side, and the enlargement of the ventilation port 12 can be accommodated.

  The elevating drive unit 23 includes a rotary drive unit 35, a screw shaft part 37 rotated by the rotary drive unit 35, and an elevating and lowering screwed by the screw shaft part 37 and the female screw part 38a. Since the link mounting member 24 is integrated with the lifting / lowering cylinder part 38, the lifting / lowering drive unit 23 can be formed to be elongated and compact to drive the link mounting member 24 up and down. The unit 23 includes a rotation shaft portion 39 provided integrally on the extension of the screw shaft portion 37, and the rotation shaft portion 39 is rotated by a bearing portion 40 attached on the beam portion 31 of the frame member 21. Since it is held freely, the operational stability of the lift drive unit 23 can be secured.

  When the lid member 28 is opened in a state where water has accumulated on the upper side of the lid member 28, the link 25 having the long hole 46 loosely fitted in the vertical direction with the link connecting shaft 27 of the lid member 28 is first a drain valve 42. Then, the valve shaft 44 of the drain valve 42 is pushed up to open the valve main body 43, and the water accumulated on the upper side of the lid member 28 is discharged downward from the drain hole 41, and then the link 25 Pushes up the link connecting shaft 27 to open the lid member 28, so that the water pressure applied to the upper surface of the lid member 28 in the closed state is released, and then the lid member 28 is opened with a relatively light force as compared with the hydraulic pressure action. be able to. Further, the drain valve 42 can be operated prior to the opening operation of the lid member 28 by only the raising operation of the link 25 without using a sequence circuit or the like.

  Since the frame member 21 and the lid member 28 are formed in a shape in which the square corner portions 21a, 28a are cut obliquely in plan view, all the corner portions 21a, 28a in plan view of the frame member 21 and lid member 28 are Compared to the case where the frame member 21 and the lid member 28 are rectangular in plan view, the frame member 21 and the lid member 28 can be prevented from being bent excessively at the corners 21a, 28a of the frame member 21 and the lid member 28, It is possible to improve the sealing performance such as durability of the sealing member 55 and adhesion to the surfaces contacting each other.

  Since the inclined surfaces 51 and 52 inclined downward toward the center are provided at the peripheral edge where the frame member 21 and the lid member 28 contact each other, the downward inclined inclined surface 51 provided at the peripheral edge of the frame member 21 As well as rainwater, the dust contained in rainwater can be dropped smoothly, and the sealing member 55 on the lid member 28 side in the open state does not hinder the fall of dust contained in rainwater, etc. It is difficult for dust to collect in 21 and it is possible to prevent the dust from hindering the closing of the lid member 28.

  INDUSTRIAL APPLICABILITY The present invention has industrial applicability to business operators involved in manufacturing, sales, construction, and the like of a ventilation port inundation prevention device.

12 Ventilation opening
14 Inundation prevention device
21 Frame member
21a Corner
22 Drive mounting member
23 Lifting drive unit
24 Link mounting member
25 links
27 Link connecting shaft
28 Lid member
28a Corner
31 Beam
32 Frame
35 Rotary drive unit
37 Screw shaft
38 Lifting cylinder
39 Rotating shaft
40 Bearing
41 Drain hole
42 Drain valve
43 Valve body
44 Valve stem
45 Pressed part
46 Slotted hole
51 Inclined surface
52 Inclined surface
55 Seal member

Claims (5)

A frame member installed in the vertical ventilation opening;
A drive mounting member attached to the center of the frame member and suspended;
A lifting drive unit supported by the drive part mounting member;
A link mounting member that is driven up and down by the up-and-down drive unit;
A plurality of links axially connected symmetrically across the link mounting member with the link mounting member;
A plurality of lid members each pivotally supported on a central portion of the frame member and opened and closed with respect to the frame member above the frame member by the plurality of links;
The lifting drive unit is
A rotational drive unit that generates forward and reverse rotational forces;
A screw shaft that is rotated at a fixed position by the rotation drive unit;
An elevating cylinder portion screwed and screwed with the screw shaft portion;
A rotating shaft part integrally provided on the extension of the screw shaft part,
It said link mounting member is integrated into the lifting cylinder unit,
The said rotating shaft part is rotatably hold | maintained by the bearing part attached to the said frame member. The infiltration prevention apparatus of the ventilation opening characterized by the above-mentioned . The frame member includes a beam portion that spans the central portion of the frame member, and a frame portion on one side and a frame portion on the other side that are integrally provided on one side and the other side across the beam. And
The drive part mounting member is formed in a rectangular tube shape that fits within the range of the beam part in plan view and is attached to the beam part, and the elevating drive unit is attached in the lower part of the drive part mounting member,
The lid member is characterized in that the lid member on one side and the lid member on the other side that can be opened and closed with respect to the frame portion on the one side and the frame portion on the other side are respectively pivotally supported on the beam portion. The infiltration prevention device for a ventilation opening according to claim 1. The lid member
A drain hole for draining the water accumulated on the upper side of the lid member,
A drain valve that opens and closes the drain hole;
A link connecting shaft located below the drain valve,
The drain valve
A valve body that opens and closes a drain hole by moving up and down on the upper side of the lid member;
A valve stem projecting from the valve body through the lid member to the lower side of the lid member;
Provided with a pressed portion provided at a position opposite to the upper end of the link provided at the lower end of the valve shaft portion;
Link, flooding prevention device according to claim 1 or 2 vent according to comprising the elongated hole loosely fitted in the vertical direction as the link connecting shaft of the lid member. The frame member and the lid member are formed in a shape that diagonally cuts square corners in plan view,
The ventilating flood prevention device according to any one of claims 1 to 3 , further comprising a seal member disposed endlessly along one of the surfaces of the frame member and the lid member that contact each other. Each of the frame member and the lid member includes an inclined surface that is inclined downward toward the center portion at the peripheral edge portions that are in contact with each other,
The ventilated flood prevention device according to any one of claims 1 to 4 , further comprising a seal member disposed endlessly on an inclined surface of the lid member along the peripheral edge of the lid member.

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