JP2012233329A - Water-proof moisture-permeable filter and electric switch-and-lock with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-proof moisture-permeable filter that has both the water resistance function and dew condensation prevention function, and an outdoor installed device, especially an electric switch-and-lock, with the same.SOLUTION: A water-proof moisture-permeable filter includes a water-proof moisture-permeable sheet 1 and support members 3, 5 and is disposed across a ventilation passage communicating between the inside and the outside of an outdoor installed device. The water-proof moisture-permeable sheet 1 allows no water to pass through and allows moisture vapor to permeate. The support members 3, 5 have air permeability and support the water-proof moisture-permeable sheet 1.

Description

  The present invention relates to a waterproof moisture permeable filter and an electric switch equipped with the same.

  For example, as described in Patent Document 1, the electric switch is configured to drive a tongrel and determine the opening direction of the track. A conversion / locking mechanism is built in the equipment storage box. ing. In addition, an operation cane and a lock cane protruding from the inside of the device storage box are provided. The operation can drive the Tongler by the driving force of the motor, and the lock can locks the Tongrel at the conversion position by the conversion lock.

  By the way, a standard electric switch, for example, an electric switch called NS type electric switch, does not have water resistance. For this reason, in the event of heavy rain, flood, etc., water enters the inside of the equipment storage box from the air passages such as the operation slot, lock slot, vent hole or drain hole, and the conversion / lock mechanism breaks down. There is a fear.

  As a means for solving this problem, a water-resistant electric switch with a sealed structure has been developed in which an air passage serving as a water infiltration passage is eliminated. This water-resistant electric switch is not a problem as long as high airtightness is maintained. However, if the airtightness decreases due to secular change or increase in the number of operations of the conversion / lock, the moisture containing air is drawn into the equipment storage box due to atmospheric pressure fluctuations inside and outside the equipment storage box due to temperature difference. Or, a slight amount of moisture adhering to the operation cane or the lock cane is drawn into the device storage box as the operation cane or the lock cane moves, and the water inside the device storage box increases. For this reason, dew condensation occurs inside the equipment storage box, and the internal dew condensation may cause rusting of the components constituting the conversion / locking mechanism, which may cause inconvenience.

JP 2006-26595 A

  An object of the present invention is to provide a waterproof and moisture permeable filter having both a water resistance function and a dew condensation prevention function, and an electric switch equipped with the same.

  In order to solve the above-described problem, the waterproof moisture-permeable filter according to the present invention includes a waterproof moisture-permeable sheet and a support member. The waterproof and moisture permeable sheet does not pass water but allows water vapor to pass therethrough. The support part has air permeability and supports the waterproof and moisture-permeable sheet.

  The waterproof and moisture permeable filter according to the present invention includes a waterproof and moisture permeable sheet, and since this waterproof and moisture permeable sheet does not allow water to pass therethrough, in an outdoor installation device having an air passage extending from the inside of the device storage box to the outside, When arranged so as to cross the ventilation path, the entry of water from the outside to the inside of the equipment storage box is prevented.

  On the other hand, since the waterproof and moisture permeable filter used in the present invention allows water vapor to pass therethrough, water vapor that causes condensation inside the device storage box can be released from the inside of the device storage box to the outside. Accordingly, the waterproof and moisture permeable filter has both a water resistance function and a dew condensation prevention function.

  The waterproof moisture-permeable filter according to the present invention further includes a support member. This support part has air permeability and supports a waterproof moisture-permeable sheet. According to this structure, the waterproof / moisture permeable sheet is maintained in a predetermined planar shape to sufficiently exhibit the water resistance function and the dew condensation prevention function, and the waterproof / moisture permeable sheet is maintained in the predetermined planar shape using the support member. It can be attached to the equipment storage box so as to cross the ventilation path of the equipment storage box.

  The waterproof / moisture permeable filter according to the present invention preferably includes a fastener such as a screw or a screw, and the fastener has a laminated body of the waterproof and moisture permeable sheet and the support member from one surface side to the other surface side serving as an attachment surface. Penetrates detachably. According to such a structure, even when the waterproof and moisture permeable filter has to be replaced due to, for example, aging, it can be easily replaced with a new one. The prevention function can be maintained.

  The waterproof / moisture permeable filter according to the present invention can be used in a tipping machine having an air passage that extends from the inside of the device storage box to the outside. In application to a turning machine, the waterproof / breathable filter according to the present invention is disposed so as to cross the air passage.

  Since the waterproof / moisture permeable filter according to the present invention does not allow water to pass therethrough, even when there is a flood or the like, water does not enter the inside of the equipment storage box from the air passage. Therefore, even if there is a flood or the like, there is no possibility that the conversion / locking mechanism will break down.

  Moreover, since the waterproof and moisture permeable filter according to the present invention allows water vapor to pass through, the water vapor that causes dew condensation can escape from the inside of the device storage box to the outside. Therefore, due to secular change and increase in the number of operations of conversion / locking, the airtightness is reduced, and air containing moisture is drawn into the equipment storage box due to atmospheric pressure fluctuations inside and outside the equipment storage box due to temperature difference, or Even if the moisture inside the device storage box increases as the moisture inside the device storage box increases due to the slight moisture adhering to the operation or lock It is possible to prevent the occurrence of condensation, and to avoid the rusting of each component constituting the conversion / locking mechanism due to the condensation.

  As described above, the main use of the waterproof / breathable filter according to the present invention is a tipping machine, but can be applied to various outdoor installation devices that require waterproofing and prevention of condensation on the device storage box.

  As described above, according to the present invention, it is possible to provide a waterproof and moisture permeable filter having both a water resistance function and a dew condensation prevention function, and an outdoor installation device including the waterproof moisture filter, in particular, an electric switch.

  Other features of the present invention and the operational effects thereof will be described in more detail by way of examples with reference to the accompanying drawings.

It is a disassembled perspective view of the waterproof breathable filter concerning the present invention. It is a figure which shows the humidity-moisture permeability characteristic of the waterproof moisture-permeable sheet used for the waterproof moisture-permeable filter which concerns on this invention. It is a figure which shows a part of outdoor installation apparatus using the waterproof moisture-permeable filter which concerns on this invention. It is a perspective view which shows the cover-opening state of the electric switch using the waterproof moisture-permeable filter which concerns on this invention. It is the top view which looked at the cover body of the electric switch shown in FIG. 4 from the inner side. FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. It is the perspective view which looked at the cross-sectional state of FIG. 6 from the inner side (lower surface side) of the cover body.

  Referring to FIG. 1, the illustrated waterproof / breathable filter includes a waterproof / breathable sheet 1, a first support member 3, and a second support member 5. The waterproof and moisture permeable sheet 1 does not allow water to pass through and allows water vapor to pass therethrough. Water is a cluster in which many water molecules are aggregated, and water vapor is a water molecule or a small cluster of water molecule aggregates less than water. For example, water droplets such as rain have a diameter of 200 to 8000 μm, and water vapor has a size of about 0.0004 μm. The waterproof and moisture-permeable sheet 1 has a polymer microporous membrane structure that allows water vapor to pass through, using the above-described size difference between water and water vapor. Such a waterproof and moisture-permeable sheet 1 is known as Gore-Tex (registered trademark) of WL Gore & Associates, Hi Brizatec (registered trademark) of Tokyo Shinkor Co., Entrant (registered trademark) of Toray.

  FIG. 2 is a diagram showing an example of the humidity-moisture permeability characteristics of the waterproof and moisture-permeable sheet 1 described above, and shows actual measurement data measured by the JIS L 1099A-2 method. The JIS L 1099A-2 method is a method in which a container containing water is placed in a measurement environment and the mass of water evaporated in 24 hours is measured. In the experiment, the relationship between humidity and moisture permeability was measured using temperature as a parameter.

  As shown in the measured data in FIG. 2, in an environment with low humidity, water vapor is positively discharged, and thus moisture permeability is high. On the other hand, in a high humidity environment, there is little discharge of water vapor and the moisture permeability is low.

  Further, the higher the environmental temperature, the higher the moisture permeability. The actual measurement data as described above is useful as basic data when actually preparing a waterproof and moisture permeable filter.

  Again, a description will be given with reference to FIG. The first support member 3 is a porous plate having air permeability, for example, and is laminated on one surface of the waterproof and moisture-permeable sheet 1. The second support member 5 is also a porous plate having air permeability, for example, and is laminated on the other surface of the waterproof and moisture-permeable sheet 1. The first support member 3 and the second support member 5 are made of a metal plate material that is hard to rust and has high mechanical strength, such as stainless steel. The multiple holes 311 and 511 provided in the first support member 3 and the second support member 5 may be mechanically perforated or may be die-cut. The area of the open area in which the holes 311 and 511 are opened, the number of holes included therein, the hole diameter, and the hole shape can be arbitrarily set.

  The illustrated waterproof and moisture permeable filter further includes a packing 7 and a fastener 9. The packing 7 can be constituted by what has heretofore been known as a packing material. The packing 7 has a frame shape and has an opening 711 surrounded by the frame portion 713. The packing 7 is arranged such that a peripheral frame portion 713 is laminated on the second support member 5, and an opening region of the second support member 5 overlaps with the surface of the opening 711. The aperture region of the second support member 5 overlaps the aperture region of the first support member 3 with the waterproof and moisture permeable sheet 1 interposed therebetween.

  The fasteners 9 are typically screws and screws, and are provided at predetermined intervals on each peripheral portion of the laminated body of the first support member 3, the water-permeable sheet, the second support member 5, and the packing 7. The inserted insertion holes 313, 513, 715 are penetrated. And it attaches to the predetermined position of an outdoor installation apparatus by making the side with packing 7 into an attachment surface.

  FIG. 3 is a cross-sectional view showing a state where the waterproof and moisture permeable filter shown in FIG. 1 is attached to an outdoor installation device. Referring to the figure, the outdoor-installed device has a structure in which a lid 13 is attached to a device storage box 11 that constitutes the main part thereof, and is directed from the device storage box 11 to the lid 13 and continues from the lid 13 to the outside. An air passage 131 is provided. The waterproof and moisture permeable filter 15 is fixed to the back surface 133 of the lid 13. A first opening 135 is provided on the back surface 133. The waterproof and moisture permeable filter 15 covers the entire surface of the first opening 135 and is fixed by the fastener 9 so that the packing 7 is in close contact with the back surface 133. In the figure, a filter 17 that prevents entry of dust, insects, and the like is attached to a second opening 137 provided in the outer wall of the lid 13.

  As already described, since the waterproof / moisture permeable filter 15 used in the present invention does not allow water that is a large cluster to pass through, when the water / permeable moisture permeable filter 15 is arranged so as to cross the ventilation path 131 that connects the inside and the outside of the equipment storage box 11 Intrusion of water from the outside to the inside of the storage box 11 is prevented.

  On the other hand, the waterproof / breathable filter 15 used in the present invention passes water vapor, which is a minute cluster in which water molecules or water molecules smaller than water are gathered, so water vapor that causes dew condensation inside the device storage box 11. As shown by the arrow F1, it can escape from the inside of the equipment storage box 11 to the outside. Therefore, the waterproof and moisture permeable filter 15 having both a water resistance function and a dew condensation prevention function is obtained.

  In the illustrated form, the waterproof / breathable filter 15 according to the present invention includes a first support member 3 and a second support member 5, and the first support member 3 is a porous plate having air permeability, for example, The waterproof and moisture-permeable sheet 1 is laminated on one surface. The second support member 5 is also a porous plate having air permeability, for example, and is laminated on the other surface of the waterproof and moisture-permeable sheet 1. That is, the waterproof and permeable sheet 1 is sandwiched between the first and second support members 3 and 5 having air permeability from both sides thereof. According to this structure, the waterproof and moisture-permeable sheet 1 is maintained in a predetermined planar shape, sufficiently exhibits a water resistance function and a dew condensation prevention function, and is waterproofed using the first and second support members 3 and 5. The moisture permeable sheet can be attached to the equipment storage box 11 so as to cross the ventilation path 131 while keeping the predetermined planar shape.

  The waterproof / moisture permeable filter 15 according to the present invention includes a fastener 9 such as a screw or a screw, and the fastener 9 includes a laminated body of the waterproof / breathable sheet 1 and the first and second support members 3, 5 on one side. It detachably penetrates to the other surface side which becomes the mounting surface. According to such a structure, even when the waterproof / breathable filter 15 has to be replaced due to, for example, aging, it can be easily replaced with a new one, and the outdoor installation equipment can be waterproofed over a long period of time. Functions and anti-condensation functions can be maintained.

  The waterproof and moisture permeable filter 15 according to the present invention can be used in a tipping machine. Next, specific examples will be described with reference to FIGS.

  As is well known, the turning machine has a conversion / locking mechanism 19 inside the device storage box 11. The equipment storage box 11 is made of a strong metal molding. The conversion / locking mechanism 19 incorporated therein includes a motor, a motor protection friction clutch, a reduction gear, a conversion locking part, a hand-operating device for failure, and a circuit controller that detects the opening direction and the contact state of the tongrel. Is included.

  Furthermore, an operation lever 23 and a locking lever 21 projecting from the inside of the device storage box 11 are provided, and the operation lever 23 is a motor drive transmitted via a motor protection friction clutch and a reduction gear. The tongrel is driven by force, and the lock can 21 locks the tongrel to the conversion position by the conversion lock portion. The operation canister 23 and the lock canister 21 are protected by a cover 25.

  The device storage box 11 is attached with a strong lid 13 made of a metal molded body. Around the back surface 133 facing the device storage box 11 of the lid 13, there is provided a first opening 135 that continues to the inside of the device storage box 11 when the lid 13 is assembled to the device storage box 11. In addition, a second opening 137 that is continuous with the outside air is provided on the side of the lid 13. Between the first opening 135 and the second opening 137, an air passage 131 that passes below the outer peripheral edge 139 of the lid 13 is provided. In addition to the air passage 131 described above, the switch is a hermetically sealed type that does not have an air passage that continues to the outside.

  In application to a turning machine, the waterproof and moisture permeable filter 15 according to the present invention is disposed so as to cross the ventilation path 131. That is, the waterproof / breathable filter 15 according to the present invention is provided across the air passage 131 so as to cover the entire surface of the first opening 135 and is fixed to the back surface 133 by the fastener 9. At that time, the packing 7 is in close contact with the back surface 133. Furthermore, a filter 17 for protecting the waterproof / breathable filter 15 from the invasion of dust, insects and the like is attached to the second opening 137.

  Since the waterproof / breathable filter 15 according to the present invention does not allow water to pass through, the water can enter the inside of the equipment storage box 11 from the air passage 131 even when the turning machine is exposed to heavy rain, flood, or the like. There is no. Therefore, even if there is heavy rain, flood, etc., there is no possibility that the conversion / locking mechanism 19 will break down.

  Moreover, since the waterproof / breathable filter 15 according to the present invention allows water vapor to pass as indicated by the arrow F1, for example, the water vapor that causes condensation can escape from the inside of the device storage box 11 to the outside. Therefore, due to secular change or increase in the number of operations of conversion / locking, the airtightness is reduced, or the air containing moisture in the device storage box 11 is changed due to atmospheric pressure fluctuations inside and outside the device storage box 11 due to temperature difference. A small amount of water that is pulled in or attached to the operation canister 23 or the lock can 21 is drawn into the device storage box 11 as the operation canister 23 or the lock can 21 is operated, and the water inside the device storage box 11 increases. Even in this case, it is possible to prevent dew condensation from occurring inside the device storage box 11, and to prevent rusting from occurring on each component constituting the conversion / locking mechanism 19 due to dew condensation.

  While the present invention has been described with reference to the embodiment, it is needless to say that the present invention is not limited to this embodiment, and various modifications and changes can be made within the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Waterproof moisture-permeable sheet 3 1st support member 5 2nd support member 7 Packing 11 Equipment storage box 13 Cover 15 Waterproof moisture-permeable filter 17 Filter

Claims (3)

A waterproof and moisture permeable filter comprising a waterproof and moisture permeable sheet and a support member,
The waterproof and moisture-permeable sheet does not pass water and allows water vapor to pass through.
The support part has air permeability and supports the waterproof and moisture permeable sheet.
Waterproof breathable filter. It is an outdoor installation device having a ventilation path that continues from the inside of the device storage box to the outside,
A waterproof breathable filter that crosses the air passage;
The waterproof moisture permeable filter is the one described in claim 1.
Outdoor installation equipment.   It is the outdoor installation apparatus described in Claim 2, Comprising: The outdoor installation apparatus which is a tipping machine.

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