JP5855301B1 - Filter device and filter pressing unit used therefor - Google Patents

Filter device and filter pressing unit used therefor Download PDF

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JP5855301B1
JP5855301B1 JP2015059447A JP2015059447A JP5855301B1 JP 5855301 B1 JP5855301 B1 JP 5855301B1 JP 2015059447 A JP2015059447 A JP 2015059447A JP 2015059447 A JP2015059447 A JP 2015059447A JP 5855301 B1 JP5855301 B1 JP 5855301B1
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filter
frame
leaf spring
operating member
locking
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JP2016064396A (en
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西川　浅太郎
浅太郎 西川
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AQC Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters

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Abstract

【課題】部品点数が少なく簡単な構造で濾過性能を確保でき、フィルタの交換も容易に行えるフィルタ装置を提供する。【解決手段】取付枠（枠体）１に組み込まれたフィルタ２の前面（他面）側で一端部４ａを取付枠１のフィルタ保持面１４に固定され、一端部４ａと他端部４ｂの間にフィルタ２前面に向かって凸となる湾曲部４ｃが形成された板ばね４と、板ばね４の長手方向に沿って延び、板ばね４の他端部４ｂと連結された操作部材７とを備え、操作部材７を長手方向に移動させて所定の係止位置で係止したときに、板ばね４の湾曲部４ｃの湾曲が大きくなってその湾曲部４ｃでフィルタ２の前面を押圧し、フィルタ２の後面（一面）の周縁部を取付枠１のフィルタ受け面１３に押し付けるフィルタ押付機構３を設けることにより、濾過性能を確保するための構成を簡単にし、フィルタ２交換も容易に行えるようにした。【選択図】図６Provided is a filter device that can secure filtration performance with a simple structure with a small number of parts and that can be easily replaced. One end 4a is fixed to the filter holding surface 14 of the mounting frame 1 on the front surface (other surface) side of the filter 2 incorporated in the mounting frame (frame) 1, and the one end 4a and the other end 4b are fixed. A leaf spring 4 formed with a curved portion 4c projecting toward the front surface of the filter 2, and an operation member 7 extending along the longitudinal direction of the leaf spring 4 and connected to the other end portion 4b of the leaf spring 4; When the operating member 7 is moved in the longitudinal direction and locked at a predetermined locking position, the bending of the bending portion 4c of the leaf spring 4 increases and the bending portion 4c presses the front surface of the filter 2. By providing the filter pressing mechanism 3 that presses the peripheral edge of the rear surface (one surface) of the filter 2 against the filter receiving surface 13 of the mounting frame 1, the configuration for ensuring the filtration performance can be simplified and the filter 2 can be easily replaced. I did it. [Selection] Figure 6

Description

本発明は、ダクト等の内側に取り付けられる枠体にフィルタを組み込んだフィルタ装置と、そのフィルタを枠体に押付固定するフィルタ押付ユニットに関する。   The present invention relates to a filter device in which a filter is incorporated in a frame body attached inside a duct or the like, and a filter pressing unit that presses and fixes the filter to the frame body.

ビルや工場の空調や換気に用いられる空気清浄装置は、一般に、フィルタボックスやダクト等の内側（空気通路）に取り付けられる取付枠等の枠体にフィルタを組み込んだフィルタ装置を設け、そのフィルタに対して空気を通過させることにより、空気に含まれている異物をフィルタで捕捉して、空気を清浄化している。そして、そのフィルタ装置では、フィルタが捕捉した異物が増えるにつれて濾過性能が低下するため、定期的にフィルタの交換ができるように、フィルタを枠体に着脱可能に組み込んだものが多い。   Air purifiers used for air conditioning and ventilation in buildings and factories are generally provided with a filter device that incorporates a filter in a frame such as a mounting frame that is attached to the inside (air passage) of a filter box or duct. On the other hand, by allowing the air to pass therethrough, foreign matter contained in the air is captured by a filter to clean the air. And in the filter apparatus, since filtration performance falls as the foreign material which the filter capture | acquired increases, in many cases, the filter was incorporated in the frame so that the filter could be replaced | exchanged regularly.

ところで、上記のようにフィルタを枠体に着脱可能に組み込んだフィルタ装置では、その濾過性能を確保するために、フィルタの一面の周縁部を枠体のフィルタ受け面に密着させた状態を維持する必要がある。このため、従来は、ネジでフィルタを枠体のフィルタ受け面に固定したり、フィルタ他面と対向するように枠体に固定したばねでフィルタを枠体のフィルタ受け面に押し付けて固定したりしていた。   By the way, in the filter device in which the filter is detachably incorporated in the frame body as described above, in order to ensure the filtration performance, the state where the peripheral edge portion of one surface of the filter is in close contact with the filter receiving surface of the frame body is maintained. There is a need. For this reason, conventionally, the filter is fixed to the filter receiving surface of the frame with screws, or the filter is pressed against the filter receiving surface of the frame with a spring fixed to the frame so as to face the other surface of the filter. Was.

しかし、ネジを用いる方法では、フィルタを着脱する際に多数のネジの抜き取りおよび締め付けに時間がかかり、フィルタ交換作業が面倒なものとなる。一方、固定のばねを用いる方法では、フィルタの着脱の際に、ばねの弾性力に抗してフィルタの周縁部を枠体のフィルタ受け面とばねとの間に圧入したり引き出したりすることになるので、フィルタの一面の周縁部にガスケット等の気密材を貼り付けている場合、その気密材がフィルタ受け面との間に生じる摺動抵抗によって剥がれてしまい、その補修作業に手間がかかることがある。   However, in the method using screws, it takes time to remove and tighten a large number of screws when attaching and detaching the filter, and the filter replacement work becomes troublesome. On the other hand, in the method using a fixed spring, when attaching or detaching the filter, the peripheral edge of the filter is press-fitted or pulled out between the filter receiving surface of the frame and the spring against the elastic force of the spring. Therefore, when an airtight material such as a gasket is attached to the peripheral edge of one surface of the filter, the airtight material is peeled off due to the sliding resistance generated between the filter receiving surface, and the repair work takes time. There is.

これに対し、特許文献１で提案されているフィルタ装置では、フィルタが組み込まれるケーシング（枠体）にフィルタを出し入れするための開口部を設けて、その開口部を扉で開閉するようにし、ケーシング内のフィルタ他面側にフィルタ挿入方向と平行に移動可能な可動部材と、可動部材に重ね合わせられる固定部材と、一端部を可動部材に取り付けられる第１リンク部材と、一端部を固定部材に取り付けられる第２リンク部材と、第１リンク部材と第２リンク部材のそれぞれの他端部に取り付けられる押付部材とを設けて、扉を閉めたときにその内側面に設けた押さえ部材で可動部材を移動させることにより、第１リンク部材の一端部と第２リンク部材の一端部との間隔が小さくなり、押付部材がフィルタ側に前進して、フィルタの一面の周縁部をケーシングの当接用部材（フィルタ受け面）に押し付けるようにしている。このような構成とすれば、フィルタ交換に手間がかからないし、フィルタを着脱する際にフィルタに貼り付けた気密材が剥がれるおそれもない。   On the other hand, in the filter device proposed in Patent Document 1, an opening for inserting and removing the filter is provided in a casing (frame body) in which the filter is incorporated, and the opening is opened and closed by a door. A movable member movable parallel to the filter insertion direction on the other side of the filter, a fixed member superimposed on the movable member, a first link member having one end attached to the movable member, and one end serving as the fixed member A second link member to be attached and a pressing member to be attached to each of the other end portions of the first link member and the second link member are provided, and the movable member is a pressing member provided on the inner surface of the door when the door is closed. The distance between the one end portion of the first link member and the one end portion of the second link member is reduced, and the pressing member moves forward to the filter side. A peripheral portion so that pressed against the abutment member of the casing (filter receiving surface). With such a configuration, it takes less time to replace the filter, and there is no possibility that the airtight material attached to the filter is peeled off when the filter is attached or detached.

特開２０１１−２００９５号公報JP 2011-20095 A

しかしながら、上記特許文献１に記載されたフィルタ装置では、ケーシングの扉を閉めたときに、扉に設けた押さえ部材で可動部材を移動させ、可動部材と固定部材との間に設けたリンク機構によってフィルタをケーシングの当接用部材に押し付けるようにしているので、リンク機構を構成する複数の部材や、扉を開けたときにリンク機構によるフィルタの押し付けを解除するためのばねが必要になる等、部品点数が多く構造が複雑で、製造コストが高くなるという問題がある。   However, in the filter device described in Patent Document 1, when the door of the casing is closed, the movable member is moved by the pressing member provided on the door, and the link mechanism provided between the movable member and the fixed member is used. Since the filter is pressed against the casing contact member, a plurality of members constituting the link mechanism, a spring for releasing the filter pressing by the link mechanism when the door is opened, etc. are required. There is a problem that the number of parts is large, the structure is complicated, and the manufacturing cost is high.

また、ケーシングの扉を閉状態で保持することによってフィルタをケーシングの当接用部材に押し付けた状態が維持されるようになっているので、扉のない仕様の枠体を用いたフィルタ装置には適用することができない。   Moreover, since the state in which the filter is pressed against the contact member of the casing is maintained by holding the casing door in the closed state, the filter device using the frame body having the specification with no door is used. It cannot be applied.

そこで、本発明は、部品点数が少なく簡単な構造で濾過性能を確保でき、フィルタの交換も容易に行えるフィルタ装置を提供することを課題とする。   Accordingly, an object of the present invention is to provide a filter device that can secure filtration performance with a simple structure with a small number of parts and that can be easily replaced.

上記の課題を解決するために、本発明は、フィルタと、前記フィルタが組み込まれる枠体と、前記フィルタの一面の周縁部を前記枠体のフィルタ受け面に押し付けるフィルタ押付機構とを備えたフィルタ装置において、前記フィルタ押付機構は、前記フィルタの他面の周縁部とこれに対向する前記枠体のフィルタ保持面との間に配され、前記枠体またはフィルタに固定される一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部とこの傾斜部の他端側に形成される押圧部を有する板ばねと、前記板ばねに沿って延び、前記板ばねの一端部を除く部位に連結された操作部材と、前記操作部材を所定の係止位置で係止する係止手段とを備え、前記操作部材を長手方向に移動させて前記係止位置で係止したときに、前記板ばねの傾斜部と前記フィルタの他面とのなす角度が大きくなって、前記板ばねの押圧部で前記フィルタの他面または枠体のフィルタ保持面を押圧するものとした。   In order to solve the above problems, the present invention provides a filter, a frame in which the filter is incorporated, and a filter pressing mechanism that presses a peripheral portion of one surface of the filter against a filter receiving surface of the frame. In the apparatus, the filter pressing mechanism is disposed between a peripheral edge portion of the other surface of the filter and a filter holding surface of the frame body facing the filter, and from one end portion fixed to the frame body or filter to the filter. A leaf spring having an inclined portion extending in a direction inclined with respect to the other surface, a pressing portion formed on the other end side of the inclined portion, and extending along the leaf spring and excluding one end portion of the leaf spring A plate that includes a coupled operating member and a locking means that locks the operating member at a predetermined locking position; and when the operating member is moved in the longitudinal direction and locked at the locking position, The slope of the spring and Serial and angle between the other surface of the filter is increased, and as to press the filter holding surface of the other surface or the frame of the filter press of the plate spring.

すなわち、フィルタの一面の周縁部を枠体のフィルタ受け面に押し付けるフィルタ押付機構として、フィルタの他面の周縁部とこれに対向する枠体のフィルタ保持面との間に配され、枠体またはフィルタに固定される一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部とこの傾斜部の他端側に形成される押圧部を有する板ばねを、その傾斜部とフィルタ他面とのなす角度が大きくなるように操作部材で弾性変形させて、その押圧部でフィルタの他面または枠体のフィルタ保持面を押圧するものを採用することにより、前述した従来のリンク機構を有するものよりも部品点数が少なく簡単な構造で濾過性能を確保でき、しかもネジや固定のばねを用いる方法に比べて容易にフィルタ交換が行えるようにしたのである。   That is, as a filter pressing mechanism that presses the peripheral edge of one surface of the filter against the filter receiving surface of the frame, the filter is disposed between the peripheral edge of the other surface of the filter and the filter holding surface of the frame facing the filter. A leaf spring having an inclined portion extending in a direction inclined with respect to the other surface of the filter from one end portion fixed to the filter and a pressing portion formed on the other end side of the inclined portion, the inclined portion and the other surface of the filter Having the above-mentioned conventional link mechanism by adopting an elastic member that is elastically deformed by an operating member so that the angle formed by it is increased and that presses the other surface of the filter or the filter holding surface of the frame body with the pressing portion. Compared with the method using screws and fixed springs, the filter can be easily replaced with a simple structure with fewer parts than that and ensuring filtration performance.

また、複数のフィルタと、前記各フィルタが一列に並ぶ状態で組み込まれる一つの枠体と、前記各フィルタの一面の周縁部を前記枠体のフィルタ受け面に押し付けるフィルタ押付機構とを備えたフィルタ装置の場合は、前記フィルタ押付機構として、前記各フィルタの他面の周縁部とこれに対向する前記枠体のフィルタ保持面との間に少なくとも一つずつ配され、前記枠体に固定される一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部とこの傾斜部の他端側に形成される押圧部を有する複数の板ばねと、前記各板ばねに沿って延び、前記各板ばねの一端部を除く部位に連結された一つの操作部材と、前記操作部材を所定の係止位置で係止する係止手段とを備え、前記操作部材を長手方向に移動させて前記係止位置で係止したときに、前記各板ばねの傾斜部と前記フィルタの他面とのなす角度が大きくなって、前記各板ばねの押圧部で前記各フィルタの他面を押圧するものを採用するとよい。   Also, a filter comprising a plurality of filters, one frame incorporated in a state where the filters are arranged in a row, and a filter pressing mechanism that presses a peripheral edge of one surface of each filter against the filter receiving surface of the frame In the case of an apparatus, as the filter pressing mechanism, at least one filter is arranged between the peripheral portion of the other surface of each filter and the filter holding surface of the frame facing the filter, and is fixed to the frame. A plurality of leaf springs having an inclined portion extending in a direction inclined with respect to the other surface of the filter from one end portion, a pressing portion formed on the other end side of the inclined portion, and extending along each of the leaf springs, One operating member connected to a portion excluding one end of the leaf spring, and a locking means for locking the operating member at a predetermined locking position, the operating member is moved in the longitudinal direction to move the engagement member. When locked in the stop position In the angle is increased with the other surface of the filter and the inclined portion of the plate springs, may the be adopted as to press the other face of each filter pressing portion of the plate spring.

一方、濾材の周縁部をフィルタ枠で覆ったフィルタと、前記フィルタが組み込まれる枠体と、前記フィルタの一面側でフィルタ枠の側壁の外側面を前記枠体のフィルタ受け面に押し付けるフィルタ押付機構とを備えたフィルタ装置においては、前記フィルタ押付機構として、前記フィルタ枠の内側に配され、前記フィルタ枠に固定される一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部とこの傾斜部の他端側に形成される押圧部を有する板ばねと、前記板ばねに沿って延び、前記板ばねの一端部を除く部位に連結された操作部材と、前記操作部材を所定の係止位置で係止する係止手段とを備え、前記操作部材を長手方向に移動させて前記係止位置で係止したときに、前記板ばねの傾斜部と前記フィルタの他面とのなす角度が大きくなって、前記フィルタの他面側で、前記フィルタ枠の側壁に設けた窓から突出した前記板ばねの押圧部で、前記フィルタ枠の側壁の外側面と対向する前記枠体のフィルタ保持面を押圧するものを採用することができる。このようにすれば、フィルタ押付機構をフィルタ枠の外側に設けた場合に比べて、フィルタの他面側の外観がすっきりするし、フィルタ取扱い時のフィルタ押付機構の部品によるケガを生じにくくすることができる。   On the other hand, a filter in which the periphery of the filter medium is covered with a filter frame, a frame in which the filter is incorporated, and a filter pressing mechanism that presses the outer surface of the side wall of the filter frame against the filter receiving surface of the frame on one surface side of the filter In the filter device provided with the above, as the filter pressing mechanism, an inclined portion that is arranged on the inner side of the filter frame and extends in a direction inclined with respect to the other surface of the filter from one end portion fixed to the filter frame. A leaf spring having a pressing portion formed on the other end side of the inclined portion, an operating member extending along the leaf spring and connected to a portion excluding the one end portion of the leaf spring, and the operating member with a predetermined engagement. An angle formed by the inclined portion of the leaf spring and the other surface of the filter when the operating member is moved in the longitudinal direction and locked at the locking position. Is big The filter holding surface of the frame body facing the outer surface of the side wall of the filter frame at the pressing portion of the leaf spring protruding from the window provided on the side wall of the filter frame on the other surface side of the filter What presses can be adopted. In this way, compared to the case where the filter pressing mechanism is provided outside the filter frame, the appearance of the other side of the filter is cleaner, and it is less likely to cause injury due to the components of the filter pressing mechanism when handling the filter. Can do.

そして、濾材の周縁部をフィルタ枠で覆った複数のフィルタと、前記各フィルタが一列に並ぶ状態で組み込まれる一つの枠体と、前記各フィルタの一面側で各フィルタ枠の側壁の外側面を前記枠体のフィルタ受け面に押し付けるフィルタ押付機構とを備えたフィルタ装置の場合は、前記フィルタ押付機構として、前記各フィルタ枠の内側に少なくとも一つずつ配され、前記フィルタ枠に固定される一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部とこの傾斜部の他端側に形成される押圧部を有する複数の板ばねと、前記各板ばねに沿って延び、前記板ばねの一端部を除く部位に連結された複数の操作部材と、前記各操作部材どうしを連結する連結手段と、前記操作部材のうちの一つを操作して各操作部材を所定の係止位置で係止する係止手段とを備え、前記各操作部材を長手方向に移動させて前記係止位置で係止したときに、前記各板ばねの傾斜部と前記フィルタの他面とのなす角度が大きくなって、前記フィルタの他面側で、前記各フィルタ枠の側壁に設けた窓から突出した前記各板ばねの押圧部で、前記各フィルタ枠の側壁の外側面と対向する前記枠体のフィルタ保持面を押圧するものを採用するとよい。   And a plurality of filters in which a peripheral edge of the filter medium is covered with a filter frame, a frame incorporated in a state where the filters are arranged in a line, and an outer surface of a side wall of each filter frame on one surface side of each filter. In the case of a filter device provided with a filter pressing mechanism that presses against the filter receiving surface of the frame, at least one filter is arranged on the inner side of each filter frame and fixed to the filter frame as the filter pressing mechanism. A plurality of leaf springs having an inclined portion extending in a direction inclined with respect to the other surface of the filter from the portion, a pressing portion formed on the other end side of the inclined portion, and extending along each of the leaf springs, the leaf spring A plurality of operating members connected to a portion excluding one end of the operating member, connecting means for connecting the operating members to each other, and operating each of the operating members at a predetermined locking position. Person in charge And an angle formed between the inclined portion of each leaf spring and the other surface of the filter when the operating members are moved in the longitudinal direction and locked at the locking position. On the other surface side of the filter, the filter holding of the frame body facing the outer surface of the side wall of each filter frame at the pressing portion of each leaf spring protruding from the window provided on the side wall of each filter frame What presses the surface may be adopted.

前記フィルタ押付機構の具体的な構成としては、前記板ばねの傾斜部および押圧部を、その押圧部が押圧する面に向かって凸となる湾曲部とし、この板ばねの湾曲部の他端側の部位を前記操作部材に連結し、前記操作部材を長手方向に移動させて前記係止位置で係止したときに、前記板ばねの湾曲部の湾曲が大きくなるようにしたものを採用することができる。   As a specific configuration of the filter pressing mechanism, the inclined portion and the pressing portion of the leaf spring are a curved portion that protrudes toward the surface pressed by the pressing portion, and the other end side of the bending portion of the leaf spring. When the operating member is connected to the operating member, and the operating member is moved in the longitudinal direction and locked at the locking position, the bending portion of the leaf spring is increased in curvature. Can do.

上記の構成において、前記板ばねの湾曲部に、前記操作部材を通し、操作部材の長手方向移動を案内する長孔を設けるようにすれば、操作部材の移動方向が長手方向からずれにくくなり、板ばねの湾曲部を幅方向に均一に弾性変形させやすくなるので、フィルタとフィルタ受け面とをより確実に密着させて濾過性能の向上を図ることができる。また、板ばねを枠体の幅方向に複数設ける際に、複数の板ばねの長孔に共通の操作部材が通されるように板ばねと操作部材を配置して、フィルタ押付機構の構造を簡素化することができる。   In the above configuration, if a long hole is provided in the curved portion of the leaf spring to guide the movement of the operation member in the longitudinal direction through the operation member, the movement direction of the operation member is less likely to deviate from the longitudinal direction. Since the curved portion of the leaf spring is easily elastically deformed uniformly in the width direction, the filter and the filter receiving surface can be brought into close contact with each other more reliably and the filtration performance can be improved. In addition, when a plurality of leaf springs are provided in the width direction of the frame body, the leaf springs and the operation members are arranged so that the common operation members are passed through the long holes of the plurality of leaf springs, and the structure of the filter pressing mechanism is thereby improved. It can be simplified.

また、前記操作部材が、直軸状に形成されて、その軸心まわりに回動自在に保持されるものである場合に、前記係止手段は、前記操作部材の外周面に径方向に張り出す張出片を設けるとともに、前記操作部材の回動方向で張出片と対向する係止部が操作部材の長手方向に沿って階段状に形成された係止片と、前記操作部材の張出片を前記係止片の係止部に押し付ける付勢ばねを設けて、前記操作部材を複数の係止位置で係止可能としたものを採用することができる。このようにすれば、フィルタを厚み寸法の異なるものに交換したときや、フィルタに貼り付けられたガスケット等の気密材が経時劣化したときに、操作部材の係止位置を変えることにより、板ばねの弾性変形の大きさを調整して、適切な締め付け強度でフィルタとフィルタ受け面とを密着させ、濾過性能を確保することができる。 Further, in the case where the operation member is formed in a straight shaft shape and is held so as to be rotatable about its axis, the locking means is stretched radially on the outer peripheral surface of the operation member. provided with a overhangs piece, the locking piece engaging portion is formed in a stepped shape along the longitudinal direction of the operating member facing the protruding piece in the rotational direction of the operating member, Zhang said operating member An urging spring that presses the protruding piece against the locking portion of the locking piece may be provided to enable the operation member to be locked at a plurality of locking positions. In this way, when the filter is replaced with a filter having a different thickness, or when an airtight material such as a gasket attached to the filter has deteriorated over time, the locking position of the operation member can be changed to change the leaf spring. By adjusting the size of the elastic deformation, the filter and the filter receiving surface can be brought into close contact with each other with an appropriate tightening strength, and the filtration performance can be ensured.

さらに、前記フィルタ押付機構の板ばね、操作部材および係止手段と、前記板ばねの一端部が固定され、前記枠体またはフィルタに取り付けられる取付板とをユニット化することにより、フィルタ装置の組み立てが容易になる。   Further, assembling the filter device by unitizing the plate spring, the operating member and the locking means of the filter pressing mechanism and the mounting plate to which one end of the plate spring is fixed and attached to the frame or the filter Becomes easier.

そして、上述したフィルタ装置に組み込まれ、前記板ばね、操作部材および係止手段を備えたフィルタ押付機構と、前記板ばねの一端部が固定され、前記枠体またはフィルタに取り付けられる取付板とからなる本発明のフィルタ押付ユニットは、種々の仕様のフィルタ装置に組み込める汎用性の高いものとなるので、このフィルタ押付ユニットを組み込むことによりフィルタ装置全体の製作コストの低減が図れる。   Then, the filter pressing mechanism incorporated in the filter device described above and provided with the leaf spring, the operation member, and the locking means, and an attachment plate to which one end of the leaf spring is fixed and attached to the frame or the filter. Since the filter pressing unit of the present invention is highly versatile and can be incorporated into filter devices of various specifications, the production cost of the entire filter device can be reduced by incorporating this filter pressing unit.

本発明のフィルタ装置は、上述したように、フィルタの一面の周縁部を枠体のフィルタ受け面に押し付けるフィルタ押付機構として、フィルタの他面と枠体との間に配される板ばねを、その傾斜部とフィルタ他面とのなす角度が大きくなるように操作部材で弾性変形させるものを採用したので、部品点数が少なく簡単な構造で濾過性能を確保でき、フィルタ交換も容易に行うことができる。また、本発明は、必ずしも枠体の扉を必要としないので、扉のない仕様の枠体を用いたフィルタ装置にも適用が可能である。   As described above, the filter device of the present invention uses a leaf spring disposed between the other surface of the filter and the frame body as a filter pressing mechanism that presses the peripheral edge of one surface of the filter against the filter receiving surface of the frame body. Since an operation member is used that is elastically deformed so that the angle between the inclined portion and the other surface of the filter is increased, the filtration performance can be secured with a simple structure with a small number of parts, and the filter can be easily replaced. it can. Further, the present invention does not necessarily require a frame door, and therefore can be applied to a filter device using a frame having a specification without a door.

また、本発明のフィルタ押付ユニットは、上述したフィルタ押付機構と枠体またはフィルタに取り付けられる取付板とからなるものであるから、種々の仕様のフィルタ装置に組み込んで、そのフィルタ装置全体の製作コストの低減を図ることができるし、既製のフィルタ装置に後付けしてそのフィルタ装置の濾過性能を向上させることができる。   In addition, the filter pressing unit of the present invention includes the above-described filter pressing mechanism and a frame or a mounting plate attached to the filter. Therefore, the filter pressing unit is incorporated into a filter device having various specifications, and the manufacturing cost of the entire filter device is reduced. Can be reduced, and it can be retrofitted to a ready-made filter device to improve the filtration performance of the filter device.

第１実施形態のフィルタ装置の外観斜視図External appearance perspective view of filter device of a 1st embodiment 図１のフィルタ押付機構の要部の分解斜視図The disassembled perspective view of the principal part of the filter pressing mechanism of FIG. 図２の板ばねに鉄芯を通した状態の背面図2 is a rear view of the leaf spring of FIG. ａ、ｂは、それぞれ図３のＡ−Ａ線、Ｂ−Ｂ線に沿った断面図a and b are sectional views taken along lines AA and BB in FIG. 3, respectively. 図１のフィルタ押付機構の組込状態の横断平面図Cross-sectional plan view of the filter pressing mechanism of FIG. 図１のフィルタ装置のフィルタ着脱動作の説明図Explanatory drawing of filter attachment / detachment operation | movement of the filter apparatus of FIG. ａは鉄芯と板ばねとの連結構造の変形例示す縦断正面図、ｂはａのＣ−Ｃ線に沿った断面図a is a longitudinal sectional front view showing a modified example of the connecting structure of the iron core and the leaf spring, and b is a sectional view taken along the line CC of a. 操作部材の係止解除機構の変形例の外観斜視図External perspective view of a modified example of the operation member locking release mechanism ａ、ｂは、それぞれ図８の係止解除機構の構造と動作を説明する横断平面図a and b are cross-sectional plan views illustrating the structure and operation of the unlocking mechanism of FIG. 第２実施形態のフィルタ装置の外観斜視図External perspective view of the filter device of the second embodiment 図１０の要部拡大斜視図The principal part expansion perspective view of FIG. 図１０のフィルタ押付機構の組込状態の横断平面図Cross-sectional plan view of the filter pressing mechanism of FIG. 図１０のフィルタ装置のフィルタ着脱動作の説明図Explanatory drawing of filter attachment / detachment operation | movement of the filter apparatus of FIG. ａは第３実施形態のフィルタ装置のフィルタ押付機構の構造とフィルタ着脱動作を説明する横断平面図、ｂ、ｃは、それぞれａの操作部材の移動量を変更する手段の一例の説明図a is a cross-sectional plan view for explaining the structure of the filter pressing mechanism and the filter attaching / detaching operation of the filter device of the third embodiment, and b and c are explanatory views of examples of means for changing the amount of movement of the operation member a. 第４実施形態のフィルタ装置の要部の外観斜視図External appearance perspective view of the principal part of the filter apparatus of 4th Embodiment 図１５のフィルタ押付機構の要部の分解斜視図The exploded perspective view of the principal part of the filter pressing mechanism of FIG. 第５実施形態のフィルタ装置のフィルタの外観斜視図External perspective view of filter of filter device of fifth embodiment 図１７のフィルタ押付機構の要部の分解斜視図The disassembled perspective view of the principal part of the filter pressing mechanism of FIG. 図１７のフィルタ押付機構の組込状態の横断平面図Cross-sectional plan view of the filter pressing mechanism of FIG. 図１７のフィルタ装置のフィルタ着脱動作の説明図Explanatory drawing of filter attachment / detachment operation | movement of the filter apparatus of FIG. 実施形態のフィルタ押付ユニットの外観斜視図External perspective view of filter pressing unit of embodiment 第１実施形態において図２１のフィルタ押付ユニットを組み込んだ変形例を示す横断平面図Transverse plan view showing a modification in which the filter pressing unit of FIG. 21 is incorporated in the first embodiment. 第５実施形態において図２１のフィルタ押付ユニットを組み込んだ変形例を示す横断平面図Transverse plan view showing a modification in which the filter pressing unit of FIG. 21 is incorporated in the fifth embodiment ａはフィルタ押付ユニットの変形例の外観斜視図、ｂはａの要部拡大図a is an external perspective view of a modified example of the filter pressing unit, and b is an enlarged view of a main part of a. 第６実施形態のフィルタ装置の要部の横断平面図Transverse plan view of the main part of the filter device of the sixth embodiment ａは図２５中のフィルタ押付ユニットの要部拡大平面図、ｂはａのＤ−Ｄ線に沿った断面図a is the principal part enlarged plan view of the filter pressing unit in FIG. 25, b is sectional drawing along the DD line of a. 図２５のフィルタ装置のフィルタ着脱動作を説明する横断平面図FIG. 25 is a cross-sectional plan view for explaining the filter attaching / detaching operation of the filter device of FIG. ａは図２７中のフィルタ押付ユニットの要部拡大平面図、ｂはａのＥ−Ｅ線に沿った断面図a is an enlarged plan view of a main part of the filter pressing unit in FIG. 27, and b is a cross-sectional view taken along line EE of a. ａはフィルタ押付ユニットの別の変形例の外観斜視図、ｂはａの要部拡大図a is an external perspective view of another modified example of the filter pressing unit, and b is an enlarged view of a main part of a. 第７実施形態のフィルタ装置の要部の横断平面図Transverse plan view of the main part of the filter device of the seventh embodiment 図３０のＦ−Ｆ線に沿った拡大断面図30 is an enlarged sectional view taken along line FF in FIG. 図３０のフィルタ装置のフィルタ着脱動作を説明する横断平面図FIG. 30 is a cross-sectional plan view for explaining the filter attaching / detaching operation of the filter device of FIG. 図３２のＧ−Ｇ線に沿った断面図Sectional drawing along the GG line of FIG. 第８実施形態のフィルタ装置の分解斜視図The disassembled perspective view of the filter apparatus of 8th Embodiment 図３４のフィルタ装置の正面図The front view of the filter apparatus of FIG. 図３４のフィルタ装置に組み込まれたフィルタ押付ユニットの外観斜視図FIG. 34 is an external perspective view of a filter pressing unit incorporated in the filter device of FIG. 第９実施形態のフィルタ装置の分解斜視図The disassembled perspective view of the filter apparatus of 9th Embodiment 図３７のフィルタ装置の正面図Front view of the filter device of FIG. 図３７のフィルタ装置に組み込まれたフィルタ押付ユニットの分解斜視図37 is an exploded perspective view of the filter pressing unit incorporated in the filter device of FIG. 図３９のフィルタ押付ユニットの組込状態の横断平面図Cross-sectional plan view of the filter pressing unit of FIG. 図３７のフィルタ装置のフィルタ着脱動作の説明図Explanatory drawing of filter attachment / detachment operation | movement of the filter apparatus of FIG. 第１０実施形態のフィルタ装置のフィルタの外観斜視図External perspective view of filter of filter device of tenth embodiment 図４２のフィルタに組み込まれたフィルタ押付ユニットの外観斜視図42 is an external perspective view of the filter pressing unit incorporated in the filter of FIG. 図４２のフィルタの要部の縦断正面図42 is a longitudinal front view of the main part of the filter of FIG. 図４４のＨ−Ｈ線に沿った断面図Sectional drawing along the HH line of FIG. 図４４のＩ−Ｉ線に沿った断面図Sectional drawing along the II line | wire of FIG. 図４５に対応して図４２のフィルタの着脱動作を説明する断面図FIG. 42 is a cross-sectional view for explaining the attaching / detaching operation of the filter of FIG. 42 corresponding to FIG. 図４６に対応して図４２のフィルタの着脱動作を説明する断面図FIG. 42 is a sectional view for explaining the attaching / detaching operation of the filter of FIG. 42 corresponding to FIG. 第１１実施形態のフィルタ装置のフィルタの外観斜視図The external appearance perspective view of the filter of the filter apparatus of 11th Embodiment 図４９のフィルタに組み込まれたフィルタ押付ユニットの外観斜視図49 is an external perspective view of a filter pressing unit incorporated in the filter of FIG. 図２４のフィルタ押付ユニットの変形例の要部の外観斜視図FIG. 24 is an external perspective view of the main part of a modification of the filter pressing unit of FIG. 第１２実施形態のフィルタ装置の要部の横断平面図Transverse plan view of the main part of the filter device of the twelfth embodiment ａは図５２中のフィルタ押付ユニットの要部拡大平面図、ｂはａのＪ−Ｊ線に沿った断面図a is an enlarged plan view of a main part of the filter pressing unit in FIG. 52, and b is a cross-sectional view taken along line JJ of a. 図５２のフィルタ装置のフィルタ着脱動作を説明する横断平面図52 is a cross-sectional plan view for explaining the filter attaching / detaching operation of the filter device of FIG. ａは図５４中のフィルタ押付ユニットの要部拡大平面図、ｂはａのＫ−Ｋ線に沿った断面図a is an enlarged plan view of the main part of the filter pressing unit in FIG. 54, and b is a cross-sectional view taken along line KK. 第１３実施形態のフィルタ装置の分解斜視図The disassembled perspective view of the filter apparatus of 13th Embodiment 図５６のフィルタ装置の正面図Front view of the filter device of FIG. 図５６のフィルタ装置に組み込まれたフィルタ押付ユニットの第１分割ユニットの外観斜視図56 is an external perspective view of the first divided unit of the filter pressing unit incorporated in the filter device of FIG. 図５８の第１分割ユニットの組込状態の横断平面図58 is a cross-sectional plan view of the first divided unit in FIG. ａ〜ｃは、それぞれ第１〜第３分割ユニットの平面図a to c are plan views of the first to third divided units, respectively. 図５６のフィルタ装置のフィルタどうしおよび分割ユニットどうしの連結機構を説明する横断平面図56 is a cross-sectional plan view illustrating a coupling mechanism between filters and split units of the filter device of FIG.

以下、図面に基づき、本発明の実施形態を説明する。図１乃至図６は第１の実施形態を示す。このフィルタ装置は、図１に示すように、前面から後面に空気を通す取付枠（枠体）１と、取付枠１に着脱可能に組み込まれるフィルタ２とを備えている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 6 show a first embodiment. As shown in FIG. 1, the filter device includes an attachment frame (frame body) 1 that allows air to pass from the front surface to the rear surface, and a filter 2 that is detachably incorporated into the attachment frame 1.

前記取付枠１は、矩形の開口を有する平板状の取付部１１の前面に、その開口の三辺に沿うコの字形をなすようにガイドレール１２を固定したもので、取付部１１で図示省略したフィルタボックスやダクト等の内側（空気通路）に取り付けられ、一側（図１の左側）からガイドレール１２のなすコの字の内側へフィルタ２をスライドさせて組み込むようになっている。そのガイドレール１２は、断面略Ｊ字形に形成されており、取付部１１の開口の上辺と下辺に沿う部分の略Ｊ字形断面の内側に、フィルタ２の後面（一面）の周縁部を取付枠１のフィルタ受け面１３となる取付部１１前面に押し付けるフィルタ押付機構３が設けられている。   The mounting frame 1 has a guide rail 12 fixed to a front surface of a flat mounting portion 11 having a rectangular opening so as to form a U-shape along three sides of the opening. The filter 2 is attached to the inner side (air passage) of the filter box or duct, and the filter 2 is slid from the one side (left side in FIG. 1) to the inner side of the U-shape formed by the guide rail 12. The guide rail 12 is formed to have a substantially J-shaped cross section, and the peripheral portion of the rear surface (one surface) of the filter 2 is attached to the mounting frame inside the substantially J-shaped cross section of the portion along the upper and lower sides of the opening of the mounting portion 11. A filter pressing mechanism 3 is provided that presses against the front surface of the mounting portion 11 serving as the first filter receiving surface 13.

前記フィルタ２は、矩形板状に形成された濾材２１の周縁部を取付枠１のガイドレール１２に嵌まり込む矩形のフィルタ枠２２で覆ったもので、濾材２１の前面には補強用線材２３を後面には補強用の金属製網（図示省略）をそれぞれ配して、空気が通過するときに濾材２１がフィルタ枠２２から抜け落ちないようにしている。また、フィルタ枠２２の後面側の側壁の外側面には、取付枠１のフィルタ受け面１３との間をシールするガスケット２４が貼り付けられている。   The filter 2 is formed by covering the periphery of a filter medium 21 formed in a rectangular plate shape with a rectangular filter frame 22 that fits into the guide rail 12 of the mounting frame 1. A reinforcing metal net (not shown) is provided on the rear surface so that the filter medium 21 does not fall out of the filter frame 22 when air passes. A gasket 24 is attached to the outer surface of the rear side wall of the filter frame 22 so as to seal the space between the filter frame 22 and the filter receiving surface 13 of the mounting frame 1.

前記フィルタ押付機構３は、図２および図５に示すように、フィルタ２の前面（他面）の周縁部（フィルタ枠２２の前面）とこれに対向する取付枠１のフィルタ保持面１４となるガイドレール１２の内側面との間に配され、そのフィルタ保持面１４に一端部４ａを固定される板ばね４と、板ばね４の長手方向に沿って延びるように配される丸棒状の鉄芯５の他端部に筒状の樹脂製キャップ６を装着した操作部材７と、操作部材７のキャップ６の側面と対向する位置に配される係止片８と、操作部材７のキャップ６を係止片８に押し付ける方向に付勢する補助ばね９とからなる。なお、板ばね４は、図２および図５では１つだけ図示しているが、実際には取付枠１の幅方向の２箇所に配されている（図１参照）。   As shown in FIGS. 2 and 5, the filter pressing mechanism 3 serves as a peripheral portion (front surface of the filter frame 22) of the front surface (other surface) of the filter 2 and a filter holding surface 14 of the mounting frame 1 facing this. A leaf spring 4 disposed between the inner surface of the guide rail 12 and having one end 4 a fixed to the filter holding surface 14, and a round bar-shaped iron disposed so as to extend along the longitudinal direction of the leaf spring 4 An operation member 7 having a cylindrical resin cap 6 attached to the other end of the core 5, a locking piece 8 disposed at a position facing the side surface of the cap 6 of the operation member 7, and a cap 6 of the operation member 7 And an auxiliary spring 9 that urges the locking piece 8 in the direction in which it is pressed. Although only one leaf spring 4 is shown in FIGS. 2 and 5, the leaf springs 4 are actually arranged at two locations in the width direction of the mounting frame 1 (see FIG. 1).

前記各板ばね４は、取付枠１のフィルタ保持面１４に固定される一端部４ａとフィルタ２前面に対して垂直に延びる他端部４ｂとの間に、フィルタ２前面に向かって凸となる湾曲部４ｃが形成されている。その湾曲部４ｃは、両端部４ａ、４ｂからフィルタ２の前面に対して傾斜した方向に延びる傾斜部と、両傾斜部の間で後述するようにフィルタ２前面を押圧する押圧部とからなる。また、湾曲部４ｃの両端近傍位置には操作部材７の鉄芯５を通す長孔４ｄ、４ｅがあけられ、他端部４ｂには後述するように鉄芯５と連結するための切欠き４ｆが設けられている。そして、湾曲部４ｃの長孔４ｄ、４ｅは、鉄芯５の外径とほぼ同じ幅で板ばね４の長手方向に延びており（図３、図４参照）、湾曲部４ｃの弾性変形に合わせて鉄芯５を通す位置を変えながら、鉄芯５の板ばね４幅方向の動きを規制して、鉄芯５（操作部材７）の長手方向移動を案内するようになっている。   Each leaf spring 4 is convex toward the front surface of the filter 2 between one end portion 4 a fixed to the filter holding surface 14 of the mounting frame 1 and the other end portion 4 b extending perpendicularly to the front surface of the filter 2. A curved portion 4c is formed. The curved portion 4c includes an inclined portion extending in a direction inclined with respect to the front surface of the filter 2 from both end portions 4a and 4b, and a pressing portion that presses the front surface of the filter 2 between both inclined portions as will be described later. In addition, elongated holes 4d and 4e through which the iron core 5 of the operating member 7 is passed are formed at positions near both ends of the curved portion 4c, and a notch 4f for connecting to the iron core 5 is connected to the other end portion 4b as will be described later. Is provided. And the long holes 4d and 4e of the curved part 4c are extended in the longitudinal direction of the leaf | plate spring 4 with the width | variety substantially the same as the outer diameter of the iron core 5 (refer FIG. 3, FIG. 4), and elastic deformation of the curved part 4c is carried out. In addition, the movement of the iron core 5 in the width direction of the leaf spring 4 is regulated while changing the position through which the iron core 5 is passed, and the longitudinal movement of the iron core 5 (operation member 7) is guided.

前記操作部材７は、鉄芯５の長手方向の２箇所に小径部５ａが形成されており、これらの各小径部５ａが板ばね４の他端部４ｂの切欠き４ｆに嵌まり込むことによって各板ばね４と連結されている。そして、鉄芯５の小径部５ａの一端側に連続する部分が板ばね４の２つの長孔４ｄ、４ｅに通され、鉄芯５の他端部に装着されたキャップ６がガイドレール１２の端面から一部突出する状態で、長手方向移動可能に保持されている。また、キャップ６の外周面には環状溝６ａが形成され、この環状溝６ａで後述するように係止片８に係止されるようになっている。   The operation member 7 has small diameter portions 5 a formed at two locations in the longitudinal direction of the iron core 5, and these small diameter portions 5 a are fitted into the notches 4 f of the other end portion 4 b of the leaf spring 4. Each leaf spring 4 is connected. A portion of the iron core 5 continuous to one end side of the small diameter portion 5 a is passed through the two long holes 4 d and 4 e of the leaf spring 4, and the cap 6 attached to the other end portion of the iron core 5 is connected to the guide rail 12. It is held so as to be movable in the longitudinal direction while partially protruding from the end face. An annular groove 6a is formed on the outer peripheral surface of the cap 6, and the annular groove 6a is engaged with the engaging piece 8 as will be described later.

前記係止片８は、鉤状に形成され、その先端部８ａが操作部材７の一端側を向く姿勢で取付枠１のフィルタ保持面１４に固定されている。そして、操作部材７が図５に示す初期位置から所定の係止位置に移動すると、係止片８の先端部８ａがキャップ６の環状溝６ａに嵌まり込んで操作部材７を係止するようになっている（図６参照）。   The locking piece 8 is formed in a bowl shape, and is fixed to the filter holding surface 14 of the mounting frame 1 in a posture in which a tip end portion 8 a faces one end side of the operation member 7. Then, when the operating member 7 moves from the initial position shown in FIG. 5 to a predetermined locking position, the distal end portion 8a of the locking piece 8 fits into the annular groove 6a of the cap 6 so that the operating member 7 is locked. (See FIG. 6).

また、前記補助ばね９は、先端側に孔９ａがあけられた平板をその孔９ａよりも基端側で折り曲げて断面くの字状に形成したものであり、その孔９ａに通した操作部材７の鉄芯５と係合して曲げ角度が大きくなる方向に弾性変形した状態で、折り曲げ位置よりも基端側の部位を取付枠１のフィルタ保持面１４に固定されて、操作部材７のキャップ６を係止片８に押し付けている。   Further, the auxiliary spring 9 is formed by bending a flat plate having a hole 9a on the distal end side thereof on the proximal end side with respect to the hole 9a to form a cross-sectional shape, and an operation member that is passed through the hole 9a. 7 is engaged with the iron core 5 and is elastically deformed in a direction in which the bending angle is increased, the base end side of the bending position is fixed to the filter holding surface 14 of the mounting frame 1. The cap 6 is pressed against the locking piece 8.

次に、図５および図６に基づいて、このフィルタ装置のフィルタ着脱動作について説明する。フィルタ２を取付枠１に組み込むときは、図５に示したように、フィルタ押付機構３の操作部材７が初期位置にある状態で、フィルタ２を取付枠１の一側からガイドレール１２のなすコの字の内側へスライドさせていく。このとき、フィルタ押付機構３はフィルタ２と干渉しないので、フィルタ２をスムーズに取付枠１にセットすることができる。   Next, the filter attaching / detaching operation of the filter device will be described based on FIGS. 5 and 6. When the filter 2 is assembled into the mounting frame 1, as shown in FIG. 5, the filter 2 is inserted into the guide rail 12 from one side of the mounting frame 1 with the operation member 7 of the filter pressing mechanism 3 in the initial position. Slide it inside the U-shape. At this time, since the filter pressing mechanism 3 does not interfere with the filter 2, the filter 2 can be set on the mounting frame 1 smoothly.

そして、図５の状態から、フィルタ押付機構３の操作部材７のキャップ６をガイドレール１２のＪ字形断面の内側へ押し込んで操作部材７を所定の係止位置まで移動させると、図６に示したように、補助ばね９の弾性力によりキャップ６の環状溝６ａに係止片８の先端部８ａが嵌まり込んで操作部材７が係止される。このとき、フィルタ押付機構３の各板ばね４は、操作部材７の長手方向移動に伴って、操作部材７の鉄芯５に連結された他端部４ｂが取付枠１のフィルタ保持面１４に固定された一端部４ａに近づき、湾曲部４ｃの湾曲が大きくなって、その湾曲部４ｃでフィルタ２の前面を押圧する。すなわち、板ばね４は、弾性変形によって、湾曲部４ｃのうちの傾斜部とフィルタ２前面とのなす角度が大きくなって、両傾斜部の間の押圧部でフィルタ２の前面（フィルタ枠２２の前面側の側壁の外側面）を押圧する。これにより、フィルタ２の後面（フィルタ枠２２の後面側の側壁の外側面）に設けられたガスケット２４が取付枠１のフィルタ受け面１３に押し付けられた状態でフィルタ２が取付枠１に固定され、フィルタ２の組み込みが完了する。   Then, when the cap 6 of the operation member 7 of the filter pressing mechanism 3 is pushed into the J-shaped cross section of the guide rail 12 from the state of FIG. 5 to move the operation member 7 to a predetermined locking position, FIG. 6 shows. As described above, the distal end portion 8a of the locking piece 8 is fitted into the annular groove 6a of the cap 6 by the elastic force of the auxiliary spring 9, and the operating member 7 is locked. At this time, each leaf spring 4 of the filter pressing mechanism 3 has the other end 4 b connected to the iron core 5 of the operation member 7 on the filter holding surface 14 of the mounting frame 1 as the operation member 7 moves in the longitudinal direction. Approaching the fixed one end 4a, the bending of the bending portion 4c increases, and the front of the filter 2 is pressed by the bending portion 4c. That is, the leaf spring 4 is elastically deformed so that the angle formed between the inclined portion of the curved portion 4c and the front surface of the filter 2 is increased, and the front surface of the filter 2 (of the filter frame 22) at the pressing portion between both inclined portions. Press the outer side of the side wall on the front side. Thus, the filter 2 is fixed to the mounting frame 1 in a state where the gasket 24 provided on the rear surface of the filter 2 (the outer surface of the side wall on the rear surface side of the filter frame 22) is pressed against the filter receiving surface 13 of the mounting frame 1. The incorporation of the filter 2 is completed.

一方、フィルタ２を取付枠１から取り外すときは、図６の状態から、操作部材７のキャップ６を補助ばね９の弾性力に抗してフィルタ２側へ押して、キャップ６の環状溝６ａを係止片８の先端部８ａから外す。これにより、操作部材７の係止状態が解除され、各板ばね４の湾曲部４ｃが弾性復元して自動的に図５の状態に戻るので、フィルタ２の取付枠１への押し付け状態も解除される。したがって、従来のフィルタ押し付け状態解除用のばねは設ける必要がない。その後、フィルタ２を組み込み時と逆にスライドさせて取付枠１から引き出せばよい。   On the other hand, when removing the filter 2 from the mounting frame 1, from the state of FIG. 6, the cap 6 of the operating member 7 is pushed toward the filter 2 against the elastic force of the auxiliary spring 9, and the annular groove 6a of the cap 6 is engaged. Remove from the tip 8a of the stop piece 8. As a result, the locked state of the operating member 7 is released, and the curved portion 4c of each leaf spring 4 is elastically restored and automatically returns to the state shown in FIG. 5, so that the pressing state of the filter 2 against the mounting frame 1 is also released. Is done. Therefore, there is no need to provide a conventional spring for releasing the filter pressing state. Thereafter, the filter 2 may be slid in the reverse direction of installation and pulled out from the mounting frame 1.

このフィルタ装置は、上述したように、フィルタ押付機構３の板ばね４の湾曲部４ｃの湾曲を大きくしてフィルタ２を取付枠１のフィルタ受け面１３に押し付けるようにしたので、従来のリンク機構を有するものよりも部品点数が少なく簡単な構造で濾過性能を確保できるし、ネジや固定のばねを用いる方法に比べて容易にフィルタ２の交換を行うことができる。   In this filter device, as described above, the bending of the curved portion 4c of the leaf spring 4 of the filter pressing mechanism 3 is increased to press the filter 2 against the filter receiving surface 13 of the mounting frame 1, so that the conventional link mechanism Filtering performance can be ensured with a simple structure with a smaller number of parts than those having a filter, and the filter 2 can be easily replaced as compared with a method using a screw or a fixed spring.

ここで、板ばね４の湾曲部４ｃを変形させる操作部材７は、その鉄芯５が板ばね４の湾曲部４ｃの長孔４ｄ、４ｅに通されて長手方向移動を案内されるようにしたので、操作部材７の移動方向が長手方向からずれにくく、板ばね４の湾曲部４ｃが幅方向にほぼ均一に弾性変形して、フィルタ２とフィルタ受け面１３とを確実に密着させるようになっており、このことも濾過性能の向上に寄与している。   Here, the operation member 7 for deforming the curved portion 4c of the leaf spring 4 is guided by the iron core 5 through the long holes 4d and 4e of the curved portion 4c of the leaf spring 4 to move in the longitudinal direction. Therefore, the moving direction of the operation member 7 is not easily deviated from the longitudinal direction, and the curved portion 4c of the leaf spring 4 is elastically deformed almost uniformly in the width direction, so that the filter 2 and the filter receiving surface 13 are securely brought into close contact with each other. This also contributes to the improvement of filtration performance.

また、この実施形態では、板ばね４を取付枠１の幅方向に２つ設けているが、２つの板ばね４の長孔４ｄ、４ｅに共通の操作部材７の鉄芯５を通すことにより、フィルタ押付機構３の構造の簡素化が図られている。   In this embodiment, two leaf springs 4 are provided in the width direction of the mounting frame 1, but by passing the iron core 5 of the common operation member 7 through the long holes 4 d and 4 e of the two leaf springs 4. The structure of the filter pressing mechanism 3 is simplified.

なお、操作部材７のキャップ６を係止片８に押し付ける補助ばね９は必ずしも設けなくてもよく、補助ばね９の代わりに鉄芯５を通す孔をあけたガイドを設けてもよいが、この実施形態のように補助ばね９を設けた方が、操作部材７を所定の係止位置で確実に係止することができ好ましい。また、この補助ばね９の効果をより確実にするためには、補助ばね９を係止片８にできるだけ接近させて設けることが望ましい。   The auxiliary spring 9 that presses the cap 6 of the operating member 7 against the locking piece 8 is not necessarily provided. Instead of the auxiliary spring 9, a guide having a hole through which the iron core 5 is passed may be provided. It is preferable to provide the auxiliary spring 9 as in the embodiment because the operation member 7 can be reliably locked at a predetermined locking position. Further, in order to make the effect of the auxiliary spring 9 more reliable, it is desirable to provide the auxiliary spring 9 as close to the locking piece 8 as possible.

また、操作部材７の鉄芯５と板ばね４との連結構造は、上述のように鉄芯５の小径部５ａを板ばね４の他端部４ｂの切欠き４ｆに嵌め込むものに限らず、操作部材７のキャップ６を押すと板ばね４が弾性変形するようになっていればよく、例えば図７（ａ）、（ｂ）に示すように、板ばね４の他端部４ｂに設けた孔４ｇに鉄芯５を通し、その鉄芯５の小径部５ａに嵌め込んだＥリング１６を板ばね４の他端部４ｂのキャップ６側の面に当接させるものとすることもできる。   Further, the connection structure between the iron core 5 of the operation member 7 and the leaf spring 4 is not limited to the structure in which the small diameter portion 5a of the iron core 5 is fitted into the notch 4f of the other end portion 4b of the leaf spring 4 as described above. When the cap 6 of the operating member 7 is pushed, the leaf spring 4 only needs to be elastically deformed. For example, as shown in FIGS. 7 (a) and 7 (b), the leaf spring 4 is provided at the other end 4b. The iron core 5 is passed through the hole 4g, and the E-ring 16 fitted into the small-diameter portion 5a of the iron core 5 can be brought into contact with the surface of the other end 4b of the leaf spring 4 on the cap 6 side. .

さらに、操作部材７が係止片８に係止された状態を解除するための機構として、図８および図９（ａ）に示すように、操作部材７のキャップ６の環状溝６ａよりも一端側の側面に、線材を折り曲げて形成した解除片１０の両方の周方向端部を回動自在に取り付けたものを採用することもできる。この解除機構では、図９（ａ）に示した状態（キャップ６の環状溝６ａに係止片８の先端部８ａが嵌まり込んだ状態）から、解除片１０を手前側に（図中の矢印方向に）回動させることにより、図９（ｂ）に示すように、解除片１０の回動軸近傍で係止片８の先端部８ａを押してキャップ６の環状溝６ａを係止片８の先端部８ａから外すようになっており、てこの原理を利用しているので、上述のようにキャップ６自体を係止片８から離れる方向へ押す方法に比べて、操作部材７の係止状態の解除操作が容易である。   Further, as a mechanism for releasing the state in which the operating member 7 is locked to the locking piece 8, as shown in FIGS. 8 and 9A, one end of the operating member 7 from the annular groove 6a of the cap 6 is provided. It is also possible to adopt a structure in which both end portions in the circumferential direction of the release piece 10 formed by bending a wire rod are rotatably attached to the side surface. In this release mechanism, from the state shown in FIG. 9A (the state where the tip 8a of the locking piece 8 is fitted in the annular groove 6a of the cap 6), the release piece 10 is moved to the front side (in the drawing). By rotating (in the direction of the arrow), as shown in FIG. Since the lever principle is utilized, the operation member 7 is locked compared to the method of pushing the cap 6 itself away from the locking piece 8 as described above. The operation for releasing the state is easy.

図１０乃至図１３は第２の実施形態を示す。なお、第１実施形態と同じ機能を有する部材には同じ記号を付けて説明を省略する（後述する第３乃至第１３の実施形態についても同じ。）。   10 to 13 show a second embodiment. Note that members having the same functions as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted (the same applies to third to thirteenth embodiments described later).

この第２実施形態では、フィルタ２の取付枠１への組込方式をいわゆるケンドン式としている。すなわち、図１０に示すように、取付枠１の取付部１１の前面には、第１実施形態のガイドレール１２に代わる矩形枠状のガイドレール１５が固定されており、そのガイドレール１５は、上辺部および下辺部が第１実施形態と同じく断面略Ｊ字形に形成され、両側辺部が帯板状に形成されている。そして、フィルタ２を取付枠１に組み込む際には、フィルタ２を後面側へ傾けてその上縁部を取付枠１の前面側からガイドレール１５の上辺部の内側へ差し込んだ後、フィルタ２を取付枠１と平行にしてその下縁部をガイドレール１５の下辺部の内側へ落とし込むようになっている。   In the second embodiment, the method of incorporating the filter 2 into the mounting frame 1 is a so-called Kendon type. That is, as shown in FIG. 10, a rectangular frame-shaped guide rail 15 instead of the guide rail 12 of the first embodiment is fixed to the front surface of the mounting portion 11 of the mounting frame 1. The upper side portion and the lower side portion are formed in a substantially J-shaped cross section as in the first embodiment, and both side portions are formed in a band plate shape. When the filter 2 is assembled into the mounting frame 1, the filter 2 is tilted to the rear surface side, and its upper edge is inserted from the front surface side of the mounting frame 1 into the upper side of the guide rail 15, and then the filter 2 is mounted. In parallel with the mounting frame 1, the lower edge is dropped into the lower side of the guide rail 15.

また、この第２実施形態のフィルタ押付機構３は、図１１乃至図１３にも示すように、板ばね４、操作部材７、係止片８および補助ばね９は、その一端側と他端側が第１実施形態と逆になるように配置されており、操作部材７のキャップ６装着部の近傍で鉄芯５に設けたＵ字状の操作片１７を、ガイドレール１５にあけられた長孔１８から前面側へ突出させている。その長孔１８は、操作片１７の操作部材７長手方向の移動を案内する形状に形成されている。なお、補助ばね９は、この実施形態では板ばね４の両端部４ａ、４ｂの間に設けているが、第１実施形態と同様にキャップ６装着部の近傍に設けてもよい。   Further, as shown in FIGS. 11 to 13, the filter pressing mechanism 3 of the second embodiment includes the leaf spring 4, the operation member 7, the locking piece 8, and the auxiliary spring 9 at one end side and the other end side. A long hole formed in the guide rail 15 with a U-shaped operation piece 17 provided on the iron core 5 in the vicinity of the cap 6 mounting portion of the operation member 7. 18 is projected from the front side. The long hole 18 is formed in a shape that guides the movement of the operation piece 17 in the longitudinal direction of the operation member 7. In this embodiment, the auxiliary spring 9 is provided between both end portions 4a and 4b of the leaf spring 4, but may be provided in the vicinity of the cap 6 mounting portion as in the first embodiment.

そして、図１２の状態（操作部材７が初期位置にある状態）から、操作部材７の操作片１７を板ばね４側へ押して操作部材７を所定の係止位置まで移動させると、図１３に示したように、第１実施形態と同様、補助ばね９の弾性力によりキャップ６の環状溝６ａに係止片８の先端部８ａが嵌まり込んで操作部材７が係止されて、板ばね４の湾曲部４ｃの湾曲が大きくなり、その湾曲部４ｃがフィルタ２の前面を押圧して、フィルタ２が取付枠１のフィルタ受け面１３に押し付けられる。また、このように操作部材７が係止された状態から、操作片１７をガイドレール１５内へわずかに押し込めば、キャップ６の環状溝６ａが係止片８の先端部８ａから外れ、板ばね４の弾性復元により操作部材７が初期位置に戻る。   Then, from the state of FIG. 12 (the state in which the operation member 7 is in the initial position), when the operation member 17 of the operation member 7 is pushed toward the leaf spring 4 to move the operation member 7 to a predetermined locking position, FIG. As shown, as in the first embodiment, the distal end portion 8a of the locking piece 8 is fitted into the annular groove 6a of the cap 6 by the elastic force of the auxiliary spring 9, and the operating member 7 is locked. 4, the bending portion 4 c increases, the bending portion 4 c presses the front surface of the filter 2, and the filter 2 is pressed against the filter receiving surface 13 of the mounting frame 1. Further, when the operating piece 17 is slightly pushed into the guide rail 15 from the state where the operating member 7 is locked in this way, the annular groove 6a of the cap 6 comes off from the distal end portion 8a of the locking piece 8, and the leaf spring. The operation member 7 is returned to the initial position by the elastic restoration of 4.

すなわち、この第２実施形態では、フィルタ装置の前面側からフィルタ押付機構３の操作部材７の操作片１７を操作して、簡単に操作部材７の係止とその解除を行うことができる。   That is, in this 2nd Embodiment, the operation piece 17 of the operation member 7 of the filter pressing mechanism 3 can be operated from the front side of the filter device, and the operation member 7 can be easily locked and released.

上述した第１、第２実施形態では操作部材７を１箇所で係止するようにしたが、操作部材７の係止位置をその長手方向に沿って複数設定するようにしてもよい。例えば、第１、第２実施形態においてキャップ６の環状溝６ａを複数設ければ、ガスケット２４を含むフィルタ２を厚み寸法の異なるものに交換したときや、使用中にガスケット２４が経時劣化したときに、操作部材７の係止位置を変えることにより、板ばね４の湾曲部４ｃの湾曲量を調整して、適切な締め付け強度でフィルタ２とフィルタ受け面１３とを密着させることができる。   In the first and second embodiments described above, the operating member 7 is locked at one place, but a plurality of locking positions of the operating member 7 may be set along the longitudinal direction. For example, if a plurality of the annular grooves 6a of the cap 6 are provided in the first and second embodiments, the filter 2 including the gasket 24 is replaced with one having a different thickness, or the gasket 24 deteriorates with time during use. Further, by changing the locking position of the operation member 7, the amount of bending of the bending portion 4c of the leaf spring 4 can be adjusted, and the filter 2 and the filter receiving surface 13 can be brought into close contact with each other with an appropriate tightening strength.

また、操作部材７の係止手段は、第１、第２実施形態のものに限らず、操作対象の部材を一度押すとロックし再度押すとそのロックが解除される機構、例えば、ノック式ボールペンに採用されているノックカム機構、キャビネットの扉を開閉するマグネット式のプッシュラッチ機構やガラス蝶番の機構等を用いることもできる。   The locking means of the operation member 7 is not limited to that of the first and second embodiments, but a mechanism that locks when the operation target member is pressed once and releases the lock when pressed again, such as a knock-type ballpoint pen. It is also possible to use a knock cam mechanism, a magnet type push latch mechanism that opens and closes the cabinet door, a glass hinge mechanism, or the like.

また、上述した第１、第２実施形態は扉のない取付枠１にフィルタ２を組み込むフィルタ装置の例であるが、本発明は、図１４に示す第３の実施形態のように、フィルタ２が組み込まれるケーシング（枠体）３１にフィルタ２を出し入れするための開口部３２を設け、その開口部３２をケーシング３１に回動可能に取り付けた扉３３で開閉するタイプのフィルタ装置にももちろん適用できる。   The first and second embodiments described above are examples of a filter device in which the filter 2 is incorporated in the mounting frame 1 having no door. However, the present invention is similar to the third embodiment shown in FIG. Of course, the present invention is also applicable to a filter device of a type in which an opening 32 for inserting and removing the filter 2 is provided in a casing (frame body) 31 in which the filter is incorporated, and the opening 32 is opened and closed by a door 33 rotatably attached to the casing 31. it can.

図１４（ａ）に示すように、この第３実施形態では、ケーシング３１内に前後２つの内枠３４、３５が設けられ、ケーシング３１の一側面の開口部３２から両内枠３４、３５の間の空間へフィルタ２が組み込まれるようになっている。そして、その両内枠３４、３５の間に、フィルタ２後面の周縁部をフィルタ受け面１３となる後側の内枠３５の前面に押し付けるフィルタ押付機構３が設けられている。   As shown in FIG. 14 (a), in the third embodiment, two inner frames 34 and 35 are provided in the casing 31, and the inner frames 34 and 35 are formed from the opening 32 on one side surface of the casing 31. A filter 2 is incorporated in the space between them. A filter pressing mechanism 3 that presses the peripheral edge of the rear surface of the filter 2 against the front surface of the rear inner frame 35 that becomes the filter receiving surface 13 is provided between the inner frames 34 and 35.

この第３実施形態のフィルタ押付機構３は、板ばね４の一端部４ａがケーシング３１のフィルタ保持面１４となる前側の内枠３４の内側面に固定されており、操作部材７のキャップ６が初期位置ではケーシング３１の一側面から突出し、扉３３でケーシング３１の開口部３２を閉じたときに、扉３３の内側面の凸部３６によってケーシング３１内に押し込まれるように配されている。そのキャップ６がケーシング３１内に押し込まれたときの動作は、第１実施形態と同じであり、板ばね４の湾曲部４ｃの湾曲が大きくなって、その湾曲部４ｃがフィルタ２の前面を押圧し、フィルタ２後面の周縁部に設けられたガスケット２４が後側の内枠３５のフィルタ受け面１３に押し付けられて、フィルタ２がケーシング３１に固定される。   In the filter pressing mechanism 3 of the third embodiment, one end portion 4a of the leaf spring 4 is fixed to the inner side surface of the front inner frame 34 that becomes the filter holding surface 14 of the casing 31, and the cap 6 of the operation member 7 is fixed. In the initial position, the projection protrudes from one side surface of the casing 31, and is pushed into the casing 31 by the convex portion 36 on the inner side surface of the door 33 when the opening portion 32 of the casing 31 is closed by the door 33. The operation when the cap 6 is pushed into the casing 31 is the same as that in the first embodiment, and the bending of the bending portion 4c of the leaf spring 4 increases, and the bending portion 4c presses the front surface of the filter 2. Then, the gasket 24 provided at the peripheral edge of the rear surface of the filter 2 is pressed against the filter receiving surface 13 of the inner frame 35 on the rear side, and the filter 2 is fixed to the casing 31.

ここで、前記扉３３は、その先端側にクレセント錠の可動金具３７が回動可能に取り付けられており、ケーシング３１の開口部３２を閉じた状態で、この可動金具３７を回動させてケーシング３１に固定したクレセント錠の錠受け３８に係合させればロックできるようになっている。そして、このようにして扉３３をロックすることにより、扉３３の内側面の凸部３６に押されるフィルタ押付機構３の操作部材７を係止して、フィルタ２をフィルタ受け面１３に押し付けた状態を維持することができる。すなわち、この第３実施形態は、フィルタ押付機構３の操作部材７を係止するのに、ケーシング３１の開口部３２を開閉する扉３３を利用したものとなっている。したがって、操作部材７のキャップ６には第１実施形態のような環状溝６ａを設ける必要がなく、第１実施形態の係止片８もなくすことができる。   Here, the door 33 has a movable metal fitting 37 of a crescent lock rotatably attached to the front end side thereof. With the opening 32 of the casing 31 closed, the movable metal piece 37 is rotated to turn the casing 33 into a casing. It can be locked by being engaged with a lock receiving 38 of a crescent lock fixed to 31. Then, by locking the door 33 in this way, the operation member 7 of the filter pressing mechanism 3 pressed by the convex portion 36 on the inner surface of the door 33 is locked, and the filter 2 is pressed against the filter receiving surface 13. The state can be maintained. That is, in the third embodiment, the door 33 that opens and closes the opening 32 of the casing 31 is used to lock the operation member 7 of the filter pressing mechanism 3. Therefore, the cap 6 of the operating member 7 does not need to be provided with the annular groove 6a as in the first embodiment, and the locking piece 8 of the first embodiment can be eliminated.

なお、この第３実施形態では、扉３３で押されたときの操作部材７の移動量を変えることにより、板ばね４の締め付け強度を調整することができる。操作部材７の移動量を変える手段としては、そのキャップ６を図１４（ｂ）に示すような伸縮ユニット３９に代える方法がある。この伸縮ユニット３９は、一端側開口から鉄芯５の他端部を圧入される筒状に形成され、他端側内周にめねじ部を有する装着片３９ａと、装着片３９ａの他端側内周にねじ込まれるボルト３９ｂと、ボルト３９ｂを回り止めするナット３９ｃとからなる。そして、図１４（ｂ）の状態からナット３９ｃを緩めてボルト３９ｂの装着片３９ａへのねじ込み位置を変えた後、図１４（ｃ）に示すように、ナット３９ｃを締め付けてボルト３９ｂを回り止めすることにより、伸縮ユニット３９全体の長さを変えて操作部材７の移動量を変えることができる。このほか、キャップ６を長さの異なるものに交換する、キャップ６と鉄芯５とをねじ結合させるか、あるいは、キャップ６を互いにねじ結合する２つのピースで構成して、そのねじ結合の長さを変える等の方法も採用できる。   In the third embodiment, the tightening strength of the leaf spring 4 can be adjusted by changing the amount of movement of the operation member 7 when it is pushed by the door 33. As a means for changing the movement amount of the operation member 7, there is a method of replacing the cap 6 with an expansion / contraction unit 39 as shown in FIG. The expansion / contraction unit 39 is formed in a cylindrical shape in which the other end of the iron core 5 is press-fitted from an opening at one end, and has a mounting piece 39a having a female thread portion on the inner periphery of the other end, and the other end of the mounting piece 39a. It consists of a bolt 39b screwed into the inner periphery and a nut 39c that prevents the bolt 39b from rotating. Then, after loosening the nut 39c from the state of FIG. 14 (b) to change the screwing position of the bolt 39b into the mounting piece 39a, the nut 39c is tightened to prevent the bolt 39b from rotating as shown in FIG. 14 (c). By doing so, the movement amount of the operation member 7 can be changed by changing the length of the entire expansion / contraction unit 39. In addition, the cap 6 is replaced with one having a different length, the cap 6 and the iron core 5 are screwed together, or the cap 6 is composed of two pieces that are screwed together, and the length of the screw coupling Methods such as changing the height can also be adopted.

また、上述した第１乃至第３の実施形態は、操作部材７を押して板ばね４の湾曲部４ｃの湾曲を大きくする形態のフィルタ押付機構３を採用したが、フィルタ押付機構３としては、図１５および図１６に示す第４の実施形態のように、操作部材７を引いて板ばね４の湾曲部４ｃの湾曲を大きくするものを採用することもできる。   Further, in the first to third embodiments described above, the filter pressing mechanism 3 having a configuration in which the bending of the bending portion 4c of the leaf spring 4 is increased by pushing the operation member 7, the filter pressing mechanism 3 is shown in FIG. As in the fourth embodiment shown in FIG. 15 and FIG. 16, it is also possible to employ one that pulls the operating member 7 to increase the curvature of the curved portion 4 c of the leaf spring 4.

この第４実施形態は、第１実施形態のフィルタ押付機構３を変形したもので、操作部材７の板ばね４をその一端と他端が第１実施形態と逆になるように配置し、キャップ６が装着されていない鉄芯５の他端部を直角に折り曲げて操作部５ｂを形成するとともに、ガイドレール１２のコの字の両端となる部位に、鉄芯５の操作部５ｂと係合する２段の切欠き１２ａ、１２ｂを設けて、鉄芯５の操作部５ｂが１段目の切欠き１２ａに係合する位置を操作部材７の初期位置としている。   The fourth embodiment is a modification of the filter pressing mechanism 3 of the first embodiment. The leaf spring 4 of the operation member 7 is arranged so that one end and the other end thereof are opposite to those of the first embodiment, and the cap The operation portion 5b is formed by bending the other end portion of the iron core 5 to which the iron 6 is not attached at a right angle, and the operation portion 5b of the iron core 5 is engaged with the portions that are the opposite ends of the U-shape of the guide rail 12. Two positions of the notches 12a and 12b are provided, and the position where the operating portion 5b of the iron core 5 engages with the notch 12a of the first stage is set as the initial position of the operating member 7.

そして、鉄芯５の操作部５ｂをガイドレール１２のコの字の開放側へ引くとともに回動させて２段目の切欠き１２ｂに係合させると、操作部材７が係止され、その初期位置からの長手方向移動に伴って、各板ばね４の湾曲部４ｃの湾曲が大きくなってその湾曲部４ｃでフィルタ２の前面を押圧するようになっている。また、鉄芯５の操作部５ｂをもう少し大きく引くとともに回動させてガイドレール１２の端面に係合させ、この位置で操作部材７を係止すると、ばね４の湾曲部４ｃの湾曲をさらに大きくできるので、第１、第２実施形態で複数の係止位置を設定した場合と同様、フィルタ２に貼り付けられるガスケット２４の厚み変化等に応じて適切な操作部材７の係止位置を選ぶことができる。   Then, when the operating portion 5b of the iron core 5 is pulled toward the U-shaped open side of the guide rail 12 and rotated to engage with the second notch 12b, the operating member 7 is locked, Along with the movement in the longitudinal direction from the position, the curvature of the curved portion 4c of each leaf spring 4 is increased, and the front surface of the filter 2 is pressed by the curved portion 4c. Further, when the operation portion 5b of the iron core 5 is pulled slightly larger and rotated to be engaged with the end surface of the guide rail 12, and the operation member 7 is locked at this position, the bending of the bending portion 4c of the spring 4 is further increased. Therefore, as in the case where a plurality of locking positions are set in the first and second embodiments, an appropriate locking position of the operation member 7 is selected according to a change in the thickness of the gasket 24 attached to the filter 2. Can do.

上述した第１乃至第４の実施形態では、フィルタ押付機構３の板ばね４の一端部を取付枠１のフィルタ保持面１４に固定して、その湾曲部４ｃでフィルタ２の前面を押圧するようにしたが、図１７乃至図２０に示す第５の実施形態のように、板ばね４の一端部をフィルタ２のフィルタ枠２２の前面に固定して、その湾曲部４ｃで取付枠１のフィルタ保持面１４を押圧するようにしてもよい。   In the first to fourth embodiments described above, one end of the leaf spring 4 of the filter pressing mechanism 3 is fixed to the filter holding surface 14 of the mounting frame 1 and the front surface of the filter 2 is pressed by the curved portion 4c. However, as in the fifth embodiment shown in FIGS. 17 to 20, one end of the leaf spring 4 is fixed to the front surface of the filter frame 22 of the filter 2, and the curved portion 4 c of the filter of the attachment frame 1 is used. The holding surface 14 may be pressed.

この第５実施形態は、第１実施形態のフィルタ押付機構３の板ばね４、係止片８および補助ばね９を、それぞれの装置前後方向の向きを変えて、フィルタ２のフィルタ枠２２の前面に固定したものである。そして、第１実施形態と同様、操作部材７を図１９に示した初期位置から所定の係止位置まで移動させると、図２０に示したように、操作部材７が係止片８で係止され、板ばね４の湾曲部４ｃの湾曲が大きくなってその湾曲部４ｃで取付枠１のフィルタ保持面１４を押圧することにより、フィルタ２後面の周縁部に設けられたガスケット２４が取付枠１のフィルタ受け面１３に押し付けられるようになっている。したがって、この実施形態を採用すれば、既設のフィルタ装置の濾過性能の向上を図ろうとする際に、枠体を取り外すことなく容易に改造作業を行うことができる。   In the fifth embodiment, the plate spring 4, the locking piece 8, and the auxiliary spring 9 of the filter pressing mechanism 3 of the first embodiment are respectively changed in the front-rear direction of the device, and the front surface of the filter frame 22 of the filter 2. It is fixed to. As in the first embodiment, when the operating member 7 is moved from the initial position shown in FIG. 19 to a predetermined locking position, the operating member 7 is locked by the locking piece 8 as shown in FIG. Then, the curvature of the curved portion 4c of the leaf spring 4 is increased and the filter holding surface 14 of the mounting frame 1 is pressed by the curved portion 4c, whereby the gasket 24 provided at the peripheral edge of the rear surface of the filter 2 is attached to the mounting frame 1. Is pressed against the filter receiving surface 13. Therefore, if this embodiment is adopted, when attempting to improve the filtration performance of the existing filter device, the remodeling operation can be easily performed without removing the frame.

図２１は実施形態のフィルタ押付ユニット４０を示す。このフィルタ押付ユニット４０は、第１、第５実施形態のフィルタ押付機構３の板ばね４、操作部材７およびその係止手段と、板ばね４の一端部が固定され、取付枠１またはフィルタ２に取り付けられる取付板４１とをユニット化したものである。   FIG. 21 shows the filter pressing unit 40 of the embodiment. The filter pressing unit 40 includes a plate spring 4, an operation member 7 and its locking means of the filter pressing mechanism 3 according to the first and fifth embodiments, and one end of the plate spring 4 fixed to the mounting frame 1 or the filter 2. The mounting plate 41 attached to the unit is unitized.

具体的には、取付枠１またはフィルタ２に取り付けられる帯板状の取付板４１の一面側に、第１、第５実施形態のフィルタ押付機構３の２つの板ばね４の一端部４ａと、２つの補助ばね９をそれぞれ固定し、操作部材７の鉄芯５を各板ばね４の長孔４ｄ、４ｅおよび各補助ばね９の孔９ａに通して各板ばね４に連結し、操作部材７のキャップ６の環状溝６ａに嵌まり込んで操作部材７を係止する係止片８を取付板４１と一体に形成している。そして、取付板４１の他面側にはマグネットテープ４２が図示省略した両面テープで貼り付けられており、このマグネットテープ４２で鋼製の取付枠１やフィルタ２のフィルタ枠２２に取り付けられるようになっている。なお、取付板４１の取付枠１またはフィルタ２への取付手段としては、両面テープあるいは接着剤による貼り付けや溶接等も採用することができる。   Specifically, one end portion 4a of the two leaf springs 4 of the filter pressing mechanism 3 of the first and fifth embodiments on one surface side of a band plate-like attachment plate 41 attached to the attachment frame 1 or the filter 2, The two auxiliary springs 9 are respectively fixed, and the iron core 5 of the operation member 7 is connected to the plate springs 4 through the elongated holes 4d and 4e of the plate springs 4 and the holes 9a of the auxiliary springs 9, and the operation members 7 A locking piece 8 that fits into the annular groove 6 a of the cap 6 and locks the operating member 7 is formed integrally with the mounting plate 41. A magnet tape 42 is affixed to the other surface side of the mounting plate 41 with a double-sided tape (not shown) so that the magnet tape 42 can be attached to the steel mounting frame 1 or the filter frame 22 of the filter 2. It has become. As a means for attaching the attachment plate 41 to the attachment frame 1 or the filter 2, it is possible to employ sticking or welding with a double-sided tape or an adhesive.

図２２および図２３は、それぞれ第１実施形態および第５実施形態のフィルタ装置において、フィルタ押付機構３に代えて上記フィルタ押付ユニット４０を組み込んだ変形例を示す。このようにフィルタ押付機構３を取付板４１とともにユニット化したフィルタ押付ユニット４０を用いることにより、フィルタ装置の組み立てが容易になる。また、フィルタ押付ユニット４０は種々の仕様のフィルタ装置に組み込める汎用性の高いものとなるので、フィルタ装置全体の製作コストの低減が図れる。   FIG. 22 and FIG. 23 show modifications in which the filter pressing unit 40 is incorporated in place of the filter pressing mechanism 3 in the filter devices of the first embodiment and the fifth embodiment, respectively. By using the filter pressing unit 40 in which the filter pressing mechanism 3 is unitized with the mounting plate 41 in this way, the assembly of the filter device is facilitated. Further, since the filter pressing unit 40 is highly versatile and can be incorporated into filter devices of various specifications, the manufacturing cost of the entire filter device can be reduced.

そして、フィルタ押付ユニット４０を変形して操作部材７を複数の係止位置で係止可能とすれば、前述のようにフィルタ２に貼り付けられるガスケット２４の厚み変化等に対応して板ばね４の締め付け強度を調整できるようになる。   If the filter pressing unit 40 is deformed so that the operating member 7 can be locked at a plurality of locking positions, the leaf spring 4 corresponds to the thickness change of the gasket 24 attached to the filter 2 as described above. The tightening strength of can be adjusted.

上記のようにフィルタ押付ユニット４０を変形した例を図２４（ａ）、（ｂ）に示し、この変形例のフィルタ押付ユニット４０を組み込んだ第６実施形態（の取付枠１の下側のガイドレール１２付近）を図２５乃至図２８に示す。   An example in which the filter pressing unit 40 is modified as described above is shown in FIGS. 24A and 24B, and the lower guide of the mounting frame 1 of the sixth embodiment in which the filter pressing unit 40 of this modified example is incorporated. The vicinity of the rail 12) is shown in FIGS.

図２４のフィルタ押付ユニット４０は、図２１に示した実施形態のものをベースとし、その操作部材７の丸棒状（直軸状）の鉄芯５の外周面に、径方向に張り出すＵ字状の張出片５１を設けるとともに、図２１の鉤状の係止片８に代えて、操作部材７の張出片５１を通す平板状の係止片５２を取付板４１と一体に形成している。その係止片５２は、張出片５１を通す孔の周縁に、操作部材７の回動方向で張出片５１と対向し、操作部材７の長手方向に沿って階段状に形成された係止部５２ａを有している。そして、張出片５１が係止片５２の係止部５２ａの１段目部分に係合する位置を、操作部材７の初期位置としている。 The filter pressing unit 40 in FIG. 24 is based on the embodiment shown in FIG. 21, and has a U-shape projecting radially on the outer peripheral surface of the round bar-shaped (straight shaft-shaped) iron core 5 of the operation member 7. In addition to the hook-like locking piece 8 shown in FIG. 21, a plate-like locking piece 52 through which the protruding piece 51 of the operation member 7 passes is formed integrally with the mounting plate 41. ing. The engaging piece 52 is formed on the periphery of the hole through which the overhanging piece 51 passes, facing the overhanging piece 51 in the rotation direction of the operation member 7 and formed in a step shape along the longitudinal direction of the operation member 7. A stop 52a is provided. The position at which the overhanging piece 51 engages with the first stage portion of the locking portion 52 a of the locking piece 52 is the initial position of the operation member 7.

また、図２１の補助ばね９に代えて、操作部材７の鉄芯５を通し、張出片５１を係止片５２の係止部５２ａに押し付ける付勢ばね５３を取付板４１に固定している。その付勢ばね５３は、取付板４１に固定される取付片５３ａと、張出片５１を押圧する押圧片５３ｂと、取付片５３ａと押圧片５３ｂの間で鉄芯５を通す案内片５３ｃとを、金属片の折り曲げによって形成したものである。その押圧片５３ｂは、張出片５１と当接する２箇所の間でＶ字状に折り曲げられ、張出片５１を確実に押圧できるようになっている。   Further, instead of the auxiliary spring 9 in FIG. 21, an urging spring 53 is fixed to the mounting plate 41 for passing the iron core 5 of the operation member 7 and pressing the protruding piece 51 against the locking portion 52 a of the locking piece 52. Yes. The biasing spring 53 includes a mounting piece 53a fixed to the mounting plate 41, a pressing piece 53b that presses the overhanging piece 51, and a guide piece 53c that passes the iron core 5 between the mounting piece 53a and the pressing piece 53b. Is formed by bending a metal piece. The pressing piece 53b is bent into a V-shape between two portions in contact with the overhanging piece 51 so that the overhanging piece 51 can be reliably pressed.

また、操作部材７は、鉄芯５が各板ばね４および付勢ばね５３の案内片５３ｃに通されるとともに、取付板４１の他端の折曲部にも通され、その軸心まわりに回動自在に保持されている。その鉄芯５と板ばね４との連結構造は、図７に示したものと同様に、鉄芯５の外周に嵌め込んだＥリング１６を板ばね４の他端部４ｂの外側面に当接させている。そして、取付板４１の折曲部から突出する鉄芯５の他端部に、図２１のキャップ６に代わる板状の操作つまみ５４が取り付けられている。   In addition, the operating member 7 has the iron core 5 passed through the guide pieces 53c of the plate springs 4 and the biasing springs 53, and is also passed through the bent portion at the other end of the mounting plate 41, around its axis. It is held rotatably. The connection structure between the iron core 5 and the leaf spring 4 is similar to that shown in FIG. 7 in that the E-ring 16 fitted on the outer periphery of the iron core 5 is brought into contact with the outer surface of the other end 4b of the leaf spring 4. Touching. A plate-like operation knob 54 instead of the cap 6 in FIG. 21 is attached to the other end portion of the iron core 5 protruding from the bent portion of the attachment plate 41.

図２５および図２６（ａ）、（ｂ）に示すように、第６実施形態のフィルタ装置は、第１実施形態をベースとしており、そのフィルタ押付機構３に代えて図２４のフィルタ押付ユニット４０を組み込んだものである。   As shown in FIGS. 25 and 26 (a) and 26 (b), the filter device of the sixth embodiment is based on the first embodiment, and instead of the filter pressing mechanism 3, the filter pressing unit 40 of FIG. Is incorporated.

この第６実施形態では、フィルタ押付ユニット４０は、操作部材７の操作つまみ５４が取付枠１のガイドレール１２の端面から突出する状態で、マグネットテープ４２によってガイドレール１２のフィルタ保持面１４に取り付けられている。その付勢ばね５３は、押圧片５３ｂが図２６（ａ）に二点鎖線で示す自然状態から実線の位置で操作部材７の張出片５１に当接するまで弾性変形した状態で組み込まれることにより、張出片５１を係止片５２の階段状の係止部５２ａに押し付けるようになっている。なお、ガイドレール１２には、操作部材７の張出片５１を突出させて所定範囲で回動可能とするための開口１２ｃが設けられている（図２６（ｂ））。   In the sixth embodiment, the filter pressing unit 40 is attached to the filter holding surface 14 of the guide rail 12 by the magnet tape 42 in a state where the operation knob 54 of the operation member 7 protrudes from the end surface of the guide rail 12 of the mounting frame 1. It has been. The biasing spring 53 is incorporated in a state in which the pressing piece 53b is elastically deformed from the natural state shown by a two-dot chain line in FIG. 26A until it comes into contact with the projecting piece 51 of the operating member 7 at the position of the solid line. The overhanging piece 51 is pressed against the stepped locking portion 52 a of the locking piece 52. The guide rail 12 is provided with an opening 12c for projecting the protruding piece 51 of the operation member 7 so as to be rotatable within a predetermined range (FIG. 26B).

そして、図２５、図２６に示した状態（操作部材７が初期位置にある状態）から、操作部材７の操作つまみ５４をガイドレール１２内側の方へ押して操作部材７を所定の第１係止位置まで長手方向に移動させると、図２７および図２８（ａ）、（ｂ）に示すように、付勢ばね５３の弾性力により、操作部材７全体が回動してその張出片５１が係止片５２の階段状の係止部５２ａの２段目部分に押し付けられる。このとき、フィルタ押付ユニット４０の各板ばね４は、第１実施形態と同様に、湾曲部４ｃの湾曲が大きくなって、その湾曲部４ｃでフィルタ２の前面を押圧するとともに、その弾性力によって操作部材７の長手方向で鉄芯５を介して張出片５１を係止片５２に押し付けている。これにより、操作部材７が第１係止位置で係止され、フィルタ２の後面のガスケット２４が取付枠１のフィルタ受け面１３に押し付けられた状態で、フィルタ２が取付枠１に固定される。   Then, from the state shown in FIGS. 25 and 26 (the state in which the operation member 7 is in the initial position), the operation knob 54 of the operation member 7 is pushed toward the inside of the guide rail 12 to hold the operation member 7 in a predetermined first locking state. When moved to the position in the longitudinal direction, the entire operating member 7 is rotated by the elastic force of the biasing spring 53 as shown in FIGS. It is pressed against the second step portion of the stepped locking portion 52 a of the locking piece 52. At this time, each leaf spring 4 of the filter pressing unit 40 has a large bending portion 4c as in the first embodiment, and presses the front surface of the filter 2 with the bending portion 4c. The overhanging piece 51 is pressed against the locking piece 52 through the iron core 5 in the longitudinal direction of the operation member 7. As a result, the operation member 7 is locked at the first locking position, and the filter 2 is fixed to the mounting frame 1 in a state where the gasket 24 on the rear surface of the filter 2 is pressed against the filter receiving surface 13 of the mounting frame 1. .

また、図２７、図２８に示した状態から、操作部材７の操作つまみ５４をさらに押して操作部材７を所定の第２係止位置まで長手方向に移動させると、図２８（ｂ）に二点鎖線で示すように操作部材７全体が回動し、その張出片５１が係止片５２の係止部５２ａの３段目部分に押し付けられて、操作部材７が第２係止位置で係止されるとともに、板ばね４の湾曲部４ｃの湾曲がさらに大きくなる。   In addition, when the operation knob 7 of the operation member 7 is further pushed from the state shown in FIGS. 27 and 28 to move the operation member 7 to the predetermined second locking position in the longitudinal direction, two points are shown in FIG. As shown by the chain line, the entire operation member 7 is rotated, and the overhanging piece 51 is pressed against the third stage portion of the locking portion 52a of the locking piece 52 so that the operating member 7 is engaged at the second locking position. While being stopped, the bending of the bending portion 4c of the leaf spring 4 is further increased.

したがって、フィルタ２のガスケット２４の経時劣化による厚み減少や、ガスケット２４を含むフィルタ２の交換による厚み変化等に応じて、操作部材７を適切な係止位置で係止することにより、板ばね４の弾性変形の大きさを調整して、適度な締め付け強度でフィルタ２とフィルタ受け面１３とを密着させ、濾過性能を確保することができる。   Therefore, the leaf spring 4 can be obtained by locking the operation member 7 at an appropriate locking position in accordance with a thickness reduction due to deterioration of the gasket 24 of the filter 2 over time or a thickness change due to replacement of the filter 2 including the gasket 24. The filter 2 and the filter receiving surface 13 can be brought into close contact with each other with an appropriate tightening strength by adjusting the size of the elastic deformation of the filter, thereby ensuring the filtration performance.

一方、フィルタ２を取付枠１から取り外すときは、操作部材７が第１係止位置または第２係止位置で係止されている状態から、操作つまみ５４を回して図２５および図２６に示した初期状態の回動方向位置まで戻す。すると、操作部材７全体が回動し、これに伴って張出片５１が係止片５２の係止部５２ａから離れて、操作部材７の係止状態が解除され、各板ばね４の湾曲部４ｃが弾性復元して自動的に図２５、図２６の状態に戻る。これにより、フィルタ２の取付枠１への押し付け状態も解除され、取付枠１からフィルタ２を取り外せるようになる。 On the other hand, when removing the filter 2 from the mounting frame 1, the operation knob 54 is turned from the state where the operation member 7 is locked at the first locking position or the second locking position, as shown in FIGS. 25 and 26. Return to the initial rotational position. Then, the entire operation member 7 is rotated, and accordingly, the overhanging piece 51 is separated from the locking portion 52a of the locking piece 52, the locked state of the operating member 7 is released, and the bending of each leaf spring 4 is performed. The part 4c is elastically restored and automatically returns to the state shown in FIGS. Thereby, the pressing state of the filter 2 to the mounting frame 1 is also released, and the filter 2 can be removed from the mounting frame 1.

そして、この第６実施形態では、上述のように、操作部材７を第１係止位置または第２係止位置で係止するときや、その係止状態を解除するときに、操作部材７が回動するだけでたわむことがないので、前述の第１、第２および第５実施形態の操作部材７のキャップ６を係止片８に対して脱着する際に操作部材７の鉄芯５をたわませる必要があるのに比べて、操作部材７の係止およびその解除が行いやすいという利点もある。   In the sixth embodiment, as described above, when the operating member 7 is locked at the first locking position or the second locking position, or when the locked state is released, the operating member 7 is Since it does not bend only by rotating, the iron core 5 of the operation member 7 is removed when the cap 6 of the operation member 7 of the first, second and fifth embodiments is detached from the locking piece 8. Compared with the need to bend, there is also an advantage that the operation member 7 can be easily locked and released.

図２９（ａ）、（ｂ）は、図２４とは別のフィルタ押付ユニット４０の変形例を示す。この変形例は図２４のものと同じ機能を有するが、構成および動作に図２４のものと異なる点があるので、その相違点を説明し、共通する点については説明を省略する。   FIGS. 29A and 29B show a modified example of the filter pressing unit 40 different from FIG. Although this modification has the same function as that of FIG. 24, there are differences in configuration and operation from those of FIG. 24, so the differences will be described and description of common points will be omitted.

図２９のフィルタ押付ユニット４０は、図２４のものと同じく図２１に示した実施形態のものをベースとしているが、操作部材７を所定位置で係止する係止手段が２つの板ばね４の間に設けられており、その係止手段を構成する係止片５２は取付板４１の長手方向中央部に一体形成されている。そして、操作部材７の鉄芯５には張出片５１と径方向で対向する位置に径方向に延びる突軸５５が設けられており、この突軸５５を付勢ばね５３が押圧するようになっている。このため、係止片５２の係止部５２ａの階段形状が図２４と上下で逆に形成され、付勢ばね５３の押圧片５３ｂは突軸５５を押圧する中央部が湾曲した形状に形成されている。また、操作部材７の他端には図２４の操作つまみ５４がなく、その代わりとして張出片５１を操作するようになっている。   The filter pressing unit 40 of FIG. 29 is based on the embodiment shown in FIG. 21 as in FIG. 24, but the locking means for locking the operating member 7 at a predetermined position is the two leaf springs 4. The locking piece 52 that is provided between them and constitutes the locking means is integrally formed at the center in the longitudinal direction of the mounting plate 41. The iron core 5 of the operating member 7 is provided with a projecting shaft 55 extending in the radial direction at a position facing the projecting piece 51 in the radial direction so that the biasing spring 53 presses the projecting shaft 55. It has become. For this reason, the staircase shape of the locking portion 52a of the locking piece 52 is formed upside down in FIG. 24, and the pressing piece 53b of the biasing spring 53 is formed in a shape in which the central portion that presses the protruding shaft 55 is curved. ing. Further, the other end of the operation member 7 does not have the operation knob 54 shown in FIG. 24, and instead, the projecting piece 51 is operated.

図３０乃至図３３は、第２実施形態のフィルタ押付機構３に代えて、図２９のフィルタ押付ユニット４０を組み込んだ第７実施形態のフィルタ装置（の取付枠１の下側のガイドレール１５付近）を示す。   30 to FIG. 33 show the vicinity of the guide rail 15 on the lower side of the mounting frame 1 of the filter device of the seventh embodiment in which the filter pressing unit 40 of FIG. 29 is incorporated instead of the filter pressing mechanism 3 of the second embodiment. ).

この第７実施形態では、図３０および図３１に示すように、フィルタ押付ユニット４０は、操作部材７の張出片５１が取付枠１のガイドレール１５の長孔１８から前面側へ突出する状態で、マグネットテープ４２によってガイドレール１５のフィルタ保持面１４に取り付けられている。その付勢ばね５３は、押圧片５３ｂが操作部材７の突軸５５を下方に押圧することにより、張出片５１を押し上げて係止片５２の係止部５２ａに押し付けるようになっている。なお、ガイドレール１５の長孔１８は、ガイドレール１５の幅方向中央に設けられ、操作部材７の張出片５１が所定範囲で回動可能となるように第２実施形態よりも広幅に形成されている。   In this seventh embodiment, as shown in FIGS. 30 and 31, the filter pressing unit 40 is in a state in which the protruding piece 51 of the operation member 7 protrudes from the long hole 18 of the guide rail 15 of the mounting frame 1 to the front side. Thus, it is attached to the filter holding surface 14 of the guide rail 15 by the magnet tape 42. The urging spring 53 is configured such that when the pressing piece 53 b presses the protruding shaft 55 of the operation member 7 downward, the protruding piece 51 is pushed up and pressed against the locking portion 52 a of the locking piece 52. In addition, the long hole 18 of the guide rail 15 is provided in the center of the width direction of the guide rail 15, and is formed wider than the second embodiment so that the protruding piece 51 of the operation member 7 can be rotated within a predetermined range. Has been.

そして、図３０、図３１に示した状態（操作部材７が初期位置にある状態）から、操作部材７の張出片５１を図３０の右方向へ押して操作部材７を所定の第１係止位置まで長手方向に移動させると、図３２および図３３に示すように、付勢ばね５３の弾性力により、操作部材７全体が回動してその張出片５１が係止片５２の階段状の係止部５２ａの２段目部分に押し付けられる。これにより、フィルタ押付ユニット４０の各板ばね４の湾曲部４ｃの湾曲が大きくなって、操作部材７が第１係止位置で係止され、フィルタ２の後面のガスケット２４が取付枠１のフィルタ受け面１３に押し付けられた状態で、フィルタ２が取付枠１に固定される。このメカニズムは第６実施形態と同じである。   Then, from the state shown in FIGS. 30 and 31 (the state in which the operation member 7 is in the initial position), the overhanging piece 51 of the operation member 7 is pushed rightward in FIG. When moved to the position in the longitudinal direction, as shown in FIGS. 32 and 33, the entire operating member 7 is rotated by the elastic force of the biasing spring 53, and the projecting piece 51 is a stepped shape of the locking piece 52. Is pressed against the second stage portion of the locking portion 52a. Accordingly, the bending of the bending portion 4c of each leaf spring 4 of the filter pressing unit 40 is increased, the operation member 7 is locked at the first locking position, and the gasket 24 on the rear surface of the filter 2 is the filter of the mounting frame 1. The filter 2 is fixed to the mounting frame 1 while being pressed against the receiving surface 13. This mechanism is the same as in the sixth embodiment.

また、図３２、図３３に示した状態から、操作部材７の張出片５１をさらに押して操作部材７を所定の第２係止位置まで長手方向に移動させることにより、操作部材７を第２係止位置で係止して、板ばね４の湾曲部４ｃの湾曲をさらに大きくできること、操作部材７が係止されている状態から、張出片５１を付勢ばね５３の押圧方向と逆の方向に押して操作部材７全体を回動させるだけで、操作部材７の係止状態を解除して、図３０、図３１の状態に戻せることも、第６実施形態と同じである。   Further, from the state shown in FIG. 32 and FIG. 33, by further pushing the protruding piece 51 of the operation member 7 and moving the operation member 7 in the longitudinal direction to the predetermined second locking position, the operation member 7 is moved to the second position. Since the bending of the bending portion 4c of the leaf spring 4 can be further increased by locking at the locking position, and the operation member 7 is locked, the protruding piece 51 is reverse to the pressing direction of the biasing spring 53. It is the same as in the sixth embodiment that the operating member 7 can be released from the locked state and returned to the state shown in FIGS. 30 and 31 simply by pushing in the direction and rotating the entire operating member 7.

したがって、第６実施形態と同じく、ガスケット２４を含むフィルタ２の厚み変化に応じて、適度な締め付け強度でフィルタ２とフィルタ受け面１３とを密着させて濾過性能を確保できるし、操作部材７の係止およびその解除が行いやすいという利点がある。   Accordingly, as in the sixth embodiment, according to the thickness change of the filter 2 including the gasket 24, the filter 2 and the filter receiving surface 13 can be brought into close contact with each other with an appropriate tightening strength, and the filtration performance can be secured. There is an advantage that it is easy to lock and release.

上述した第１乃至第７実施形態のフィルタ装置では取付枠１に一つのフィルタ２を組み込んでいるが、図３４乃至図３６に示す第８実施形態および図３７乃至図４１に示す第９実施形態のフィルタ装置は、横長に形成された取付枠１に複数のフィルタ２を横一列に並ぶ状態で組み込んだものである。   In the filter device of the first to seventh embodiments described above, one filter 2 is incorporated in the mounting frame 1, but the eighth embodiment shown in FIGS. 34 to 36 and the ninth embodiment shown in FIGS. This filter device is constructed by incorporating a plurality of filters 2 in a horizontal row in a horizontally long mounting frame 1.

図３４および図３５に示すように、第８実施形態のフィルタ装置は、三つのフィルタ２を順次取付枠１の一側からガイドレール１２のなすコの字の内側へ、第１実施形態と同様にスライドさせて組み込むようになっている。そのガイドレール１２は、第２実施形態と同様の長孔１８が各フィルタ２に対して上下一対ずつあけられている。そして、ガイドレール１２の上辺部および下辺部の内側には、第２実施形態のフィルタ押付機構３を取付板４１とともにユニット化したフィルタ押付ユニット４０が、そのフィルタ押付機構３の操作片１７をガイドレール１２の長孔１８から前面へ突出させる状態で、各フィルタ２に対して一対ずつ設けられている。   As shown in FIGS. 34 and 35, in the filter device of the eighth embodiment, the three filters 2 are sequentially moved from one side of the mounting frame 1 to the inside of the U-shape formed by the guide rails 12, as in the first embodiment. It is designed to be slid into the unit. The guide rail 12 is provided with a pair of upper and lower long holes 18 similar to those in the second embodiment. A filter pressing unit 40 that unitizes the filter pressing mechanism 3 of the second embodiment together with the mounting plate 41 guides the operation piece 17 of the filter pressing mechanism 3 inside the upper and lower sides of the guide rail 12. A pair is provided for each filter 2 in a state of protruding from the long hole 18 of the rail 12 to the front surface.

前記フィルタ押付ユニット４０は、図３６に示すように、取付板４１の一面側に、第２実施形態のフィルタ押付機構３の２つの板ばね４の一端部４ａと２つの補助ばね９と係止片８を固定し、操作部材７の鉄芯５を各板ばね４の長孔４ｄ、４ｅおよび各補助ばね９の孔９ａに通して各板ばね４に連結し、鉄芯５に設けた操作片１７をガイドレール１２の長孔１８に対応するように取付板４１にあけた長孔４１ａから突出させたもので、その取付板４１が他面側に設けられたマグネットテープ等（図示省略）で取付枠１のガイドレール１２の内側面（フィルタ保持面）に取り付けられる。   As shown in FIG. 36, the filter pressing unit 40 is engaged with one end 4a of the two leaf springs 4 of the filter pressing mechanism 3 of the second embodiment and two auxiliary springs 9 on one surface side of the mounting plate 41. The piece 8 is fixed, and the iron core 5 of the operation member 7 is connected to each leaf spring 4 through the long holes 4d and 4e of each leaf spring 4 and the hole 9a of each auxiliary spring 9, and the operation provided on the iron core 5 is performed. The piece 17 is projected from a long hole 41a formed in the mounting plate 41 so as to correspond to the long hole 18 of the guide rail 12, and the mounting plate 41 is provided on the other side, such as a magnet tape (not shown). And attached to the inner surface (filter holding surface) of the guide rail 12 of the mounting frame 1.

すなわち、この第８実施形態では、取付枠１に複数のフィルタ２を組み込んだフィルタ装置の前面側からフィルタ押付ユニット４０の操作片１７を操作して、各フィルタ２の着脱を行えるようになっている。   That is, in the eighth embodiment, each filter 2 can be attached and detached by operating the operation piece 17 of the filter pressing unit 40 from the front side of the filter device in which the plurality of filters 2 are incorporated in the mounting frame 1. Yes.

図３７および図３８に示すように、第９実施形態のフィルタ装置は、第８実施形態と同じく、三つのフィルタ２を順次取付枠１の一側からガイドレール１２のなすコの字の内側へスライドさせて組み込むようになっている。各フィルタ２は、隣り合うものと対向するフィルタ枠２２外側面に面ファスナー２５が取り付けられ、隣り合うものと連結されるようになっている。なお、面ファスナー２５に代えてフィルタ２どうしを連結する連結金具等を用いることもできる。そして、ガイドレール１２の上辺部および下辺部の内側には、図３９に示すフィルタ押付ユニット４０が、そのフィルタ押付機構３の操作ねじ４３の頭部をガイドレール１２の端面から突出させる状態で、各フィルタ２に対して一対ずつ設けられている（図４０参照）。   As shown in FIGS. 37 and 38, in the filter device of the ninth embodiment, as in the eighth embodiment, the three filters 2 are sequentially moved from one side of the mounting frame 1 to the inside of the U-shape of the guide rail 12. It is designed to slide in. Each filter 2 has a hook-and-loop fastener 25 attached to the outer surface of the filter frame 22 facing the adjacent one, and is connected to the adjacent one. In addition, it can replace with the hook_and_loop | surface fastener 25, and can also use the coupling metal etc. which connect the filters 2 mutually. Then, on the inner side of the upper and lower sides of the guide rail 12, the filter pressing unit 40 shown in FIG. 39 projects the head of the operation screw 43 of the filter pressing mechanism 3 from the end surface of the guide rail 12. A pair is provided for each filter 2 (see FIG. 40).

前記フィルタ押付ユニット４０は、図３９および図４０に示すように、第１実施形態の板ばね４と、第１実施形態の鉄芯５を連結片４４で前記操作ねじ４３と連結した操作部材７と、鉄芯５を通して長手方向移動を案内するガイド片４５と、操作ねじ４３とねじ結合する固定ナット４６とでフィルタ押付機構３を構成し、このフィルタ押付機構３を取付枠１のガイドレール１２の内側面に取り付けられる取付板４１とともにユニット化したものである。その板ばね４の一端部４ａとガイド片４５は取付板４１の一面側に固定されており、連結片４４は鉄芯５の端部に固定され、操作ねじ４３の先端が回転自在に嵌め込まれるものとなっている。また、固定ナット４６は取付板４１の端部を直角に折り曲げて形成したナット取付部４１ｂの内側面に固定されており、このナット取付部４１ｂを貫通する操作ねじ４３を固定ナット４６とねじ結合させることにより、操作部材７が長手方向移動可能かつ任意の位置で係止可能となっている。そして、取付板４１は、図２１のものと同じくマグネットテープ４２で取付枠１のガイドレール１２の内側面（フィルタ保持面１４）に取り付けられる。   39 and 40, the filter pressing unit 40 includes an operation member 7 in which the leaf spring 4 of the first embodiment and the iron core 5 of the first embodiment are connected to the operation screw 43 by a connecting piece 44. The filter pressing mechanism 3 is constituted by the guide piece 45 that guides the movement in the longitudinal direction through the iron core 5 and the fixing nut 46 that is screwed to the operation screw 43, and this filter pressing mechanism 3 is used as the guide rail 12 of the mounting frame 1. It unitizes with the mounting plate 41 attached to the inner surface. One end 4a of the leaf spring 4 and the guide piece 45 are fixed to one surface side of the mounting plate 41, the connecting piece 44 is fixed to the end of the iron core 5, and the tip of the operation screw 43 is rotatably fitted. It has become a thing. The fixing nut 46 is fixed to the inner surface of a nut mounting portion 41b formed by bending the end portion of the mounting plate 41 at a right angle, and an operation screw 43 passing through the nut mounting portion 41b is screwed to the fixing nut 46. By doing so, the operation member 7 can move in the longitudinal direction and can be locked at an arbitrary position. And the attachment plate 41 is attached to the inner surface (filter holding surface 14) of the guide rail 12 of the attachment frame 1 with the magnetic tape 42 like the thing of FIG.

この第９実施形態では、図４０に示すように操作ねじ４３の位置が所定の初期範囲にあれば、複数のフィルタ２をフィルタ押付機構３と干渉することなくスムーズに取付枠１にセットできる。そして、図４０の状態から操作ねじ４３を適度に締め込むことにより、図４１に示すように、連結片４４を介して鉄芯５が回転することなく操作ねじ４３と反対の側へ長手方向移動し、板ばね４の湾曲部４ｃの湾曲が大きくなってその湾曲部４ｃがフィルタ２の前面を押圧し、フィルタ２が取付枠１のフィルタ受け面１３に押し付けられる。すなわち、取付枠１に複数のフィルタ２を組み込んだフィルタ装置の一側からフィルタ押付ユニット４０の操作ねじ４３を操作して、各フィルタ２の着脱を行えるようになっている。しかも、操作ねじ４３の締込量を変えることによって操作部材７を任意の位置で係止できるので、フィルタ２の厚み寸法が多少変化しても、確実にフィルタ２を取付枠１に押付固定することができる。   In the ninth embodiment, as shown in FIG. 40, if the position of the operation screw 43 is within a predetermined initial range, the plurality of filters 2 can be smoothly set on the mounting frame 1 without interfering with the filter pressing mechanism 3. Then, by appropriately tightening the operation screw 43 from the state shown in FIG. 40, the iron core 5 does not rotate via the connecting piece 44 and moves in the longitudinal direction to the side opposite to the operation screw 43 as shown in FIG. Then, the bending of the bending portion 4 c of the leaf spring 4 increases, and the bending portion 4 c presses the front surface of the filter 2, and the filter 2 is pressed against the filter receiving surface 13 of the mounting frame 1. That is, each filter 2 can be attached and detached by operating the operation screw 43 of the filter pressing unit 40 from one side of the filter device in which the plurality of filters 2 are incorporated in the mounting frame 1. Moreover, since the operation member 7 can be locked at an arbitrary position by changing the tightening amount of the operation screw 43, the filter 2 is securely pressed and fixed to the mounting frame 1 even if the thickness dimension of the filter 2 slightly changes. be able to.

上述した第１乃至第９の実施形態では、フィルタ２のフィルタ枠２２の前面とこれに対向する取付枠１のフィルタ保持面１４との間にフィルタ押付機構３（またはこれを含むフィルタ押付ユニット４０）を配したが、フィルタ押付機構３（フィルタ押付ユニット４０）は、図４２乃至図４８に示す第１０の実施形態のように、フィルタ枠２２の内側に配することもできる。   In the first to ninth embodiments described above, the filter pressing mechanism 3 (or the filter pressing unit 40 including the filter pressing mechanism 40) is provided between the front surface of the filter frame 22 of the filter 2 and the filter holding surface 14 of the mounting frame 1 facing the filter frame 22. However, the filter pressing mechanism 3 (filter pressing unit 40) can also be disposed inside the filter frame 22 as in the tenth embodiment shown in FIGS.

この第１０実施形態は、第５実施形態のフィルタ装置において、フィルタ２のフィルタ枠２２前面に設けたフィルタ押付機構３に代えて、図４３に示すフィルタ押付ユニット４０をフィルタ枠２２の上辺部および下辺部の内側に組み込んだものである。そのフィルタ枠２２は、前面側の側壁にフィルタ押付ユニット４０の各板ばね４の湾曲部４ｃを一部通す窓２２ａがあけられ、一側（図面左側）の側壁にフィルタ押付ユニット４０の操作部材７のキャップ６を通す孔２２ｂがあけられている。   In the tenth embodiment, in the filter device of the fifth embodiment, instead of the filter pressing mechanism 3 provided on the front surface of the filter frame 22 of the filter 2, the filter pressing unit 40 shown in FIG. It is built inside the lower side. In the filter frame 22, a window 22 a through which a curved portion 4 c of each leaf spring 4 of the filter pressing unit 40 is partially passed is formed in the front side wall, and the operation member of the filter pressing unit 40 is formed on one side (left side in the drawing). A hole 22b through which the cap 6 is passed is formed.

前記フィルタ押付ユニット４０は、図２１で示した実施形態の取付板４１を断面コの字状に変形したもので（図４３参照）、そのコの字断面の開口をフィルタ２前面側に向けた姿勢でフィルタ枠２２の前面側のコの字断面部に嵌め込まれる（図４６参照）。そして、図４２、図４４乃至図４６に示すように、板ばね４の湾曲部４ｃの中央部分（押圧部）をフィルタ枠２２の前面の窓２２ａに臨ませ、キャップ６の先端部をフィルタ枠２２の左側の孔２２ｂから突出させた状態で、フィルタ枠２２の前面側の側壁からねじ込まれる止めねじ４７によって取付板４１をフィルタ枠２２に固定されている。   The filter pressing unit 40 is obtained by modifying the mounting plate 41 of the embodiment shown in FIG. 21 into a U-shaped cross section (see FIG. 43), and the U-shaped cross-section opening is directed to the front side of the filter 2. It is fitted into the U-shaped cross section on the front side of the filter frame 22 in the posture (see FIG. 46). 42, 44 to 46, the central portion (pressing portion) of the curved portion 4c of the leaf spring 4 faces the window 22a on the front surface of the filter frame 22, and the tip of the cap 6 is placed on the filter frame. The mounting plate 41 is fixed to the filter frame 22 by a set screw 47 screwed from the front side wall of the filter frame 22 in a state of protruding from the left-side hole 22 b of the filter 22.

この第１０実施形態におけるフィルタ着脱動作は、第５実施形態と基本的に同じであり、図４４乃至図４６に示した初期状態からキャップ６を押し込んで操作部材７を所定の係止位置まで移動させると、図４７および図４８に示すように、操作部材７が係止片８で係止され、板ばね４の湾曲部４ｃの湾曲が大きくなって、フィルタ枠２２の窓２２ａから突出した板ばね４の押圧部で取付枠１のフィルタ保持面１４を押圧することにより、フィルタ２後面が取付枠１のフィルタ受け面１３に押し付けられるようになっている。   The filter attaching / detaching operation in the tenth embodiment is basically the same as that of the fifth embodiment, and the cap 6 is pushed in from the initial state shown in FIGS. 44 to 46 to move the operating member 7 to a predetermined locking position. 47 and FIG. 48, the operation member 7 is locked by the locking piece 8, and the bending of the bending portion 4c of the leaf spring 4 is increased, so that the plate protruding from the window 22a of the filter frame 22 is obtained. By pressing the filter holding surface 14 of the mounting frame 1 with the pressing portion of the spring 4, the rear surface of the filter 2 is pressed against the filter receiving surface 13 of the mounting frame 1.

図４９は第１１実施形態のフィルタ装置に組み込まれるフィルタ２を示す。このフィルタ２は、図５０に示すフィルタ押付ユニット４０を、第１０実施形態と同様にフィルタ枠２２の内側に組み込んだものである。第１０実施形態のフィルタ２との相違点は、操作部材７のキャップ６をフィルタ枠２２内に収める代わりに、キャップ６装着部の近傍で鉄芯５に設けた第２実施形態と同様の操作片１７をフィルタ枠２２からフィルタ２前面と平行に突出させて、フィルタ装置の前面側から操作片１７を操作できるようにしている点と、板ばね４の数を一つにしてフィルタ２幅中央位置に配した点である。なお、フィルタ枠２２およびフィルタ押付ユニット４０の取付板４１には、それぞれ操作片１７を通してその操作部材７長手方向の移動を案内する長孔２２ｃ、４１ａがあけられている。そして、操作片１７を操作することにより、第１０実施形態でキャップ６を操作したときと同様にフィルタ着脱動作を行うことができる。   FIG. 49 shows the filter 2 incorporated in the filter device of the eleventh embodiment. This filter 2 is obtained by incorporating the filter pressing unit 40 shown in FIG. 50 inside the filter frame 22 as in the tenth embodiment. The difference from the filter 2 of the tenth embodiment is that the same operation as that of the second embodiment provided on the iron core 5 in the vicinity of the cap 6 mounting portion instead of housing the cap 6 of the operation member 7 in the filter frame 22. The piece 17 is projected from the filter frame 22 in parallel with the front surface of the filter 2 so that the operation piece 17 can be operated from the front side of the filter device, and the number of the leaf springs 4 is one, and the center of the width of the filter 2 This is the point placed at the position. The filter frame 22 and the attachment plate 41 of the filter pressing unit 40 are provided with long holes 22c and 41a for guiding the movement of the operation member 7 in the longitudinal direction through the operation piece 17, respectively. Then, by operating the operation piece 17, the filter attaching / detaching operation can be performed in the same manner as when the cap 6 is operated in the tenth embodiment.

図５１は、図２４のフィルタ押付ユニット４０を、図４３、図５０のものと同様にフィルタ枠２２の内側に組み込めるように変形した例を示す。この変形例は、取付板４１が図４３、図５０のものと同じく断面コの字状に形成され、その内側面に板ばね４と付勢ばね５３とが取り付けられている。その板ばね４は、湾曲部４ｃの凸となる向きが図２４と逆になるように配され、付勢ばね５３は、取付片５３ａの一端に鉄芯５を通す案内片５３ｃが形成され、他端に操作部材７の張出片５１を押圧する押圧片５３ｂが形成されている。   FIG. 51 shows an example in which the filter pressing unit 40 of FIG. 24 is modified so that it can be incorporated inside the filter frame 22 in the same manner as in FIG. 43 and FIG. In this modification, the mounting plate 41 is formed in a U-shaped cross section like those in FIGS. 43 and 50, and the plate spring 4 and the urging spring 53 are mounted on the inner side surface thereof. The leaf spring 4 is arranged so that the convex direction of the curved portion 4c is opposite to that in FIG. 24, and the biasing spring 53 is formed with a guide piece 53c through which the iron core 5 is passed at one end of the attachment piece 53a. A pressing piece 53b that presses the overhanging piece 51 of the operating member 7 is formed at the other end.

また、取付板４１は、その他端の折曲部の切欠きに操作部材７の鉄芯５を通されるようになっており、他端側の一部が付勢ばね５３の押圧片５３ｂと干渉しないように切り欠かれている（図５３参照）。そして、係止片５２の係止部５２ａの３段目部分をなくして、フィルタ押付ユニット４０をフィルタ枠２２の内側に組み込んだときに、フィルタ枠２２の一部が係止部５２ａの３段目部分の役割を果たすようにしている（図５２、図５４参照）。また、取付板４１のフィルタ枠２２への取り付けは、後述するように止めねじで行われる。その他の部分の構成および機能は、図２４のものと同じである。   The mounting plate 41 is configured such that the iron core 5 of the operation member 7 is passed through the notch in the bent portion at the other end, and a part on the other end side is connected to the pressing piece 53 b of the biasing spring 53. It is cut out so as not to interfere (see FIG. 53). Then, when the third step portion of the locking portion 52a of the locking piece 52 is eliminated and the filter pressing unit 40 is incorporated inside the filter frame 22, a part of the filter frame 22 becomes the third step of the locking portion 52a. It plays the role of the eye part (see FIGS. 52 and 54). The mounting plate 41 is attached to the filter frame 22 with a set screw as will be described later. The configuration and function of the other parts are the same as those in FIG.

図５２乃至図５５は、第１０実施形態をベースとして、図５１のフィルタ押付ユニット４０を図４３のものに代えて組み込んだ第１２実施形態のフィルタ装置（の取付枠１の下側のガイドレール１２付近）を示す。   FIGS. 52 to 55 are based on the tenth embodiment, and the filter pressing unit 40 of FIG. 51 is incorporated in place of that of FIG. 12 vicinity).

この第１２実施形態では、図５２および図５３（ａ）、（ｂ）に示すように、フィルタ押付ユニット４０は、操作部材７の鉄芯５の他端部をフィルタ枠２２の孔２２ｂに通し、操作つまみ５４を取付枠１のガイドレール１２の端面から突出させ、板ばね４の湾曲部４ｃの中央部分（押圧部）をフィルタ枠２２の前面の窓２２ａに臨ませた状態で、第１０実施形態と同様に、止めねじ４７によって取付板４１をフィルタ枠２２に固定されている。なお、図示は省略するが、フィルタ枠２２およびガイドレール１２には、それぞれ操作部材７の張出片５１を突出させて所定範囲で回動可能とするための開口が設けられている。   In the twelfth embodiment, as shown in FIGS. 52 and 53 (a) and 53 (b), the filter pressing unit 40 passes the other end of the iron core 5 of the operating member 7 through the hole 22b of the filter frame 22. The operation knob 54 protrudes from the end surface of the guide rail 12 of the mounting frame 1, and the center portion (pressing portion) of the curved portion 4 c of the leaf spring 4 faces the window 22 a on the front surface of the filter frame 22. Similar to the embodiment, the mounting plate 41 is fixed to the filter frame 22 by a set screw 47. Although illustration is omitted, the filter frame 22 and the guide rail 12 are each provided with an opening for projecting the protruding piece 51 of the operation member 7 so as to be rotatable within a predetermined range.

そして、図５２、図５３に示した状態（操作部材７が初期位置にある状態）から、操作部材７の操作つまみ５４をガイドレール１２内側の方へ押して操作部材７を所定の第１係止位置まで長手方向に移動させると、図５４および図５５（ａ）、（ｂ）に示すように、付勢ばね５３の弾性力により、操作部材７全体が回動してその張出片５１が係止片５２の階段状の係止部５２ａの２段目部分に押し付けられる。これにより、フィルタ押付ユニット４０の各板ばね４の湾曲部４ｃの湾曲が大きくなって、操作部材７が第１係止位置で係止されるとともに、フィルタ枠２２の窓２２ａから突出した板ばね４の押圧部が取付枠１のフィルタ保持面１４を押圧し、フィルタ２後面が取付枠１のフィルタ受け面１３に押し付けられる。   Then, from the state shown in FIGS. 52 and 53 (the state in which the operation member 7 is in the initial position), the operation knob 54 of the operation member 7 is pushed toward the inside of the guide rail 12 to hold the operation member 7 in a predetermined first locking state. When moved to the position in the longitudinal direction, as shown in FIGS. 54 and 55 (a) and 55 (b), the entire operating member 7 is rotated by the elastic force of the biasing spring 53, and the protruding piece 51 is moved. It is pressed against the second step portion of the stepped locking portion 52 a of the locking piece 52. Accordingly, the bending of the bending portion 4c of each leaf spring 4 of the filter pressing unit 40 is increased, and the operation member 7 is locked at the first locking position, and the leaf spring protrudes from the window 22a of the filter frame 22. 4 presses the filter holding surface 14 of the mounting frame 1, and the rear surface of the filter 2 is pressed against the filter receiving surface 13 of the mounting frame 1.

また、図５４、図５５に示した状態から、操作部材７の操作つまみ５４をさらに押して操作部材７を所定の第２係止位置まで長手方向に移動させると、図５５（ｂ）に二点鎖線で示すように操作部材７全体が回動し、その張出片５１がフィルタ枠２２の一部に押し付けられて、操作部材７が第２係止位置で係止されるとともに、板ばね４の湾曲部４ｃの湾曲がさらに大きくなる。そして、操作部材７が係止されている状態から、張出片５１を付勢ばね５３の押圧方向と逆の方向に押して操作部材７全体を回動させるだけで、操作部材７の係止状態を解除して、図５２、図５３の状態に戻すことができる。   Further, from the state shown in FIGS. 54 and 55, when the operation knob 54 of the operation member 7 is further pushed to move the operation member 7 to the predetermined second locking position in the longitudinal direction, two points are shown in FIG. As indicated by the chain line, the entire operation member 7 rotates, and the overhanging piece 51 is pressed against a part of the filter frame 22, so that the operation member 7 is locked at the second locking position and the leaf spring 4. The bending of the bending portion 4c is further increased. Then, from the state where the operating member 7 is locked, the operating member 7 is locked only by rotating the entire operating member 7 by pushing the protruding piece 51 in the direction opposite to the pressing direction of the biasing spring 53. Can be released to return to the states of FIGS.

したがって、前述の第６、第７実施形態と同様、ガスケット２４を含むフィルタ２の厚み変化に対して濾過性能を確保しやすいし、操作部材７の係止およびその解除も行いやすい。   Therefore, as in the sixth and seventh embodiments described above, it is easy to ensure filtration performance against changes in the thickness of the filter 2 including the gasket 24, and the operation member 7 can be easily locked and released.

上述した第１０乃至第１２実施形態では、フィルタ押付機構３（フィルタ押付ユニット４０）がフィルタ枠２２の内側に配され、初期状態では板ばね４の湾曲部４ｃもほとんどフィルタ枠２２から突出していないため（図４５および図４６、図５２および図５３参照）、フィルタ２の前面側の外観がすっきりするし、フィルタ２を取扱う際にフィルタ押付機構３の各部品によってケガをするおそれも少ないという利点がある。   In the tenth to twelfth embodiments described above, the filter pressing mechanism 3 (filter pressing unit 40) is arranged inside the filter frame 22, and the curved portion 4c of the leaf spring 4 hardly protrudes from the filter frame 22 in the initial state. For this reason (see FIGS. 45 and 46, 52 and 53), the front side of the filter 2 has a clean appearance, and there is little risk of injury from the components of the filter pressing mechanism 3 when the filter 2 is handled. There is.

図５６乃至図６１は第１３の実施形態を示す。この実施形態は、図５６および図５７に示すように、第８、第９実施形態と同様に取付枠１に三つのフィルタ２を一列に並ぶ状態で組み込むフィルタ装置において、フィルタ押付ユニット４０を第１０乃至第１２実施形態と同様にフィルタ枠２２の内側に組み込んだものである。   56 to 61 show a thirteenth embodiment. As shown in FIGS. 56 and 57, this embodiment is similar to the eighth and ninth embodiments. In the filter device in which the three filters 2 are assembled in a row in the mounting frame 1, the filter pressing unit 40 is the first one. As in the tenth to twelfth embodiments, the filter frame 22 is incorporated inside.

この第１３実施形態では、取付枠１に組み込まれる三つのフィルタ２の構成が互いにわずかに異なっており、各フィルタ２にフィルタ押付ユニット４０を三分割した第１乃至第３の分割ユニット４０ａ、４０ｂ、４０ｃが別々に組み込まれている（図６０参照）。   In the thirteenth embodiment, the configurations of the three filters 2 incorporated in the mounting frame 1 are slightly different from each other, and the first to third divided units 40a and 40b in which the filter pressing unit 40 is divided into three for each filter 2. 40c are incorporated separately (see FIG. 60).

まず、取付枠１の一側（図５６、図５７の左側）に組み込まれるフィルタ２は、フィルタ枠２２の前面側の側壁にフィルタ押付ユニット４０の各板ばね４の湾曲部４ｃを一部通す窓２２ａが、左側の側壁にフィルタ押付ユニット４０の操作部材７の操作ねじ４３を通す孔２２ｂがあけられている。また、フィルタ枠２２の右側の側壁には、中央のフィルタ２と連結するための平面視Ｌ字状の連結部２６が設けられ、後述するようにフィルタ押付ユニット４０を一体化するための窓２２ｄがあけられている（図６１参照）。   First, the filter 2 incorporated on one side of the mounting frame 1 (the left side in FIGS. 56 and 57) partially passes the curved portions 4 c of the plate springs 4 of the filter pressing unit 40 through the side wall on the front side of the filter frame 22. A hole 22b through which the operation screw 43 of the operation member 7 of the filter pressing unit 40 passes is formed in the left side wall of the window 22a. Further, an L-shaped connecting portion 26 in plan view for connecting to the central filter 2 is provided on the right side wall of the filter frame 22, and a window 22d for integrating the filter pressing unit 40 as described later. Is opened (see FIG. 61).

この左側のフィルタ２のフィルタ枠２２の内側に、図５８に示す第１分割ユニット４０ａが組み込まれている。第１分割ユニット４０ａは、図５８、図５９および図６０（ａ）に示すように、第９実施形態のフィルタ押付ユニット４０の板ばね４をその一端と他端が逆になるように配置して、操作部材７の鉄芯５と操作ねじ４３とをスイベル４８で相対回転自在に連結し、取付板４１を断面コの字状に変形するとともに、鉄芯５の右側の端部に第２分割ユニット４０ｂの鉄芯５と連結するための平面視略コの字状の連結器４９を固定したものである。そして、第１０乃至第１２実施形態のフィルタ押付ユニット４０と同様に、取付板４１のコの字断面の開口をフィルタ２前面側に向けた姿勢でフィルタ枠２２の前面側のコの字断面部に嵌め込まれ、操作ねじ４３をフィルタ枠２２の左側の孔２２ｂから、連結器４９をフィルタ枠２２の右側の窓２２ｄからそれぞれ一部突出させた状態で、フィルタ枠２２の前面側の側壁からねじ込まれる止めねじ４７によって取付板４１をフィルタ枠２２に固定されている。   A first divided unit 40a shown in FIG. 58 is incorporated inside the filter frame 22 of the left filter 2. As shown in FIG. 58, FIG. 59 and FIG. 60 (a), the first divided unit 40a is arranged such that the one end and the other end of the leaf spring 4 of the filter pressing unit 40 of the ninth embodiment are reversed. Then, the iron core 5 of the operation member 7 and the operation screw 43 are connected to each other by a swivel 48 so as to be relatively rotatable, the mounting plate 41 is deformed into a U-shaped cross section, and a second end is formed at the right end of the iron core 5. A coupler 49 having a substantially U-shape in plan view for coupling with the iron core 5 of the divided unit 40b is fixed. As in the case of the filter pressing unit 40 of the tenth to twelfth embodiments, the U-shaped cross-sectional portion on the front side of the filter frame 22 with the opening of the U-shaped cross section of the mounting plate 41 facing the front side of the filter 2 The operating screw 43 is screwed from the left side hole 22b of the filter frame 22 and the connector 49 is partially protruded from the right side window 22d of the filter frame 22 and is screwed from the front side wall of the filter frame 22. The mounting plate 41 is fixed to the filter frame 22 by a set screw 47.

また、中央のフィルタ２は、図５６および図６０（ｂ）に示すように、フィルタ枠２２の左側の側壁に、左側のフィルタ２の連結部２６と嵌合する平面視Ｌ字状の連結部２７が設けられ、操作ねじ４３を通す孔２２ｂの代わりに窓２２ｄがあけられている。その他の構成は左側のフィルタ２と同じである。   Further, as shown in FIGS. 56 and 60 (b), the center filter 2 has an L-shaped connecting portion that is fitted to the connecting portion 26 of the left filter 2 on the left side wall of the filter frame 22. 27 is provided, and a window 22d is formed instead of the hole 22b through which the operation screw 43 is passed. Other configurations are the same as those of the filter 2 on the left side.

この中央のフィルタ２のフィルタ枠２２の内側に、図５７および図６０（ｂ）に示すように、第２分割ユニット４０ｂが組み込まれている。第２分割ユニット４０ｂは、第１分割ユニット４０ａの操作部材７の操作ねじ４３、固定ナット４６、スイベル４８および取付板４１のナット取付部４１ｂをなくし、鉄芯５を左側へ延長して、その先端に第１分割ユニット４０ａの連結器４９と嵌合する平面視略コの字状の連結器５０を固定したものである。そして、第１分割ユニット４０ａと同じ姿勢でフィルタ枠２２の前面側のコの字断面部に嵌め込まれ、両側の連結器４９、５０をフィルタ枠２２の両側の窓２２ｄからそれぞれ一部突出させた状態で、第１分割ユニット４０ａと同様にフィルタ枠２２に固定されている。   As shown in FIGS. 57 and 60B, the second divided unit 40b is incorporated inside the filter frame 22 of the central filter 2. The second divided unit 40b eliminates the operation screw 43, the fixing nut 46, the swivel 48 and the nut mounting portion 41b of the mounting plate 41 of the operating member 7 of the first divided unit 40a, and extends the iron core 5 to the left side. A substantially U-shaped coupler 50 in plan view that fits with the coupler 49 of the first divided unit 40a is fixed to the tip. Then, it is fitted into the U-shaped cross section on the front side of the filter frame 22 in the same posture as the first divided unit 40a, and the couplers 49 and 50 on both sides are partially protruded from the windows 22d on both sides of the filter frame 22, respectively. In the state, it is being fixed to the filter frame 22 similarly to the 1st division | segmentation unit 40a.

また、右側のフィルタ２は、図６０（ｃ）に示すように、フィルタ枠２２の右側の側壁に連結部２６および窓２２ｄがないほかは中央のフィルタ２と同じ構成である。   Further, as shown in FIG. 60C, the right filter 2 has the same configuration as that of the central filter 2 except that the right side wall of the filter frame 22 does not have the connecting portion 26 and the window 22d.

この右側のフィルタ２のフィルタ枠２２の内側に、図５７および図６０（ｃ）に示すように、第３分割ユニット４０ｃが組み込まれている。第３分割ユニット４０ｃは、鉄芯５の右側の端部に連結器４９が固定されてないほかは第２分割ユニット４０ｂと同じ構成である。   As shown in FIG. 57 and FIG. 60 (c), the third divided unit 40c is incorporated inside the filter frame 22 of the right filter 2. The third divided unit 40c has the same configuration as the second divided unit 40b except that the connector 49 is not fixed to the right end of the iron core 5.

上述した三つのフィルタ２を組み込む際には、予め各フィルタ２を互いに連結して一体化しておく。フィルタ２どうしの連結は、その一方のフィルタ枠２２の右側の側壁を他方のフィルタ枠２２の左側の側壁に沿って平行にスライドさせることによって、フィルタ枠２２の連結部２６、２７どうしを嵌合させる。このとき、第１分割ユニット４０ａと第２分割ユニット４０ｂ、または第２分割ユニット４０ｂと第３分割ユニット４０ｃの操作部材７の連結器４９、５０どうしも嵌合するので、三つのフィルタ２を一体化すると、同時にフィルタ押付ユニット４０も一体化される（図６１参照）。   When incorporating the three filters 2 described above, the filters 2 are connected and integrated in advance. The filters 2 are connected to each other by sliding the right side wall of one filter frame 22 in parallel along the left side wall of the other filter frame 22 so that the connecting portions 26 and 27 of the filter frame 22 are fitted to each other. Let At this time, the couplers 49 and 50 of the operating member 7 of the first divided unit 40a and the second divided unit 40b, or the second divided unit 40b and the third divided unit 40c are also fitted, so that the three filters 2 are integrated. At the same time, the filter pressing unit 40 is also integrated (see FIG. 61).

そして、一体化した三つのフィルタ２をガイドレール１２のなすコの字の内側へスライドさせてセットした後、図４４に一点鎖線で示すように操作ねじ４３を抜き出す方向に回転させると、スイベル４８を介して各分割ユニット４０ａ、４０ｂ、４０ｃの鉄芯５が回転することなく一体に操作ねじ４３の側へ長手方向移動し、板ばね４の湾曲部４ｃの湾曲が大きくなって、フィルタ枠２２の窓２２ａから突出した板ばね４の押圧部が取付枠１のフィルタ保持面１４を押圧し、各フィルタ２が取付枠１のフィルタ受け面１３に押し付けられる。   Then, after the three integrated filters 2 are slid and set to the inside of the U-shape of the guide rail 12, the swivel 48 is rotated when the operation screw 43 is rotated in the direction in which the operation screw 43 is pulled out as shown by a one-dot chain line in FIG. The iron core 5 of each of the divided units 40a, 40b, 40c is integrally moved in the longitudinal direction toward the operation screw 43 without rotating, so that the bending of the bending portion 4c of the leaf spring 4 becomes large, and the filter frame 22 The pressing portion of the leaf spring 4 protruding from the window 22 a presses the filter holding surface 14 of the mounting frame 1, and each filter 2 is pressed against the filter receiving surface 13 of the mounting frame 1.

なお、この第１３実施形態でも、操作ねじ４３の抜出量を変えることによって、第９実施形態と同様、フィルタ押付ユニット４０の各分割ユニット４０ａ、４０ｂ、４０ｃの操作部材７を任意の位置で係止できるので、フィルタ２の厚み寸法が多少変化しても、確実にフィルタ２を取付枠１に押付固定できる。   In the thirteenth embodiment, the operation member 7 of each of the divided units 40a, 40b, and 40c of the filter pressing unit 40 can be moved at an arbitrary position as in the ninth embodiment by changing the amount of extraction of the operation screw 43. Since it can be locked, the filter 2 can be securely pressed and fixed to the mounting frame 1 even if the thickness dimension of the filter 2 slightly changes.

上述した各実施形態では、フィルタ２の空気流入側となる前面側にフィルタ押付機構３（またはこれを含むフィルタ押付ユニット４０）を設けて、フィルタ２を空気流出側となる後面側へ押すようにしたが、これとは逆に、フィルタ２の後面側に設けたフィルタ押付機構３でフィルタ２を前面側へ押すようにすることもできる。   In each of the above-described embodiments, the filter pressing mechanism 3 (or the filter pressing unit 40 including the filter pressing mechanism 3) is provided on the front surface side that is the air inflow side of the filter 2, and the filter 2 is pressed to the rear surface side that is the air outflow side. However, on the contrary, the filter 2 can be pushed to the front side by the filter pressing mechanism 3 provided on the rear side of the filter 2.

また、フィルタ押付機構の板ばねは、実施形態のように一端部と他端部の間に湾曲部が形成されたものに限らず、例えば実施形態の板ばね４の他端部４ｂをなくし、一端部４ａの近傍で操作部材７の鉄芯５に連結されるようにしたもの等、一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部を有し、一端部を除く部位で操作部材に連結され、傾斜部とフィルタ他面とのなす角度が大きくなったときに、傾斜部の他端側に形成された押圧部で、フィルタの他面または枠体のフィルタ保持面を押圧するようになっているものであればよい。   Further, the leaf spring of the filter pressing mechanism is not limited to the one in which the curved portion is formed between the one end portion and the other end portion as in the embodiment, for example, the other end portion 4b of the leaf spring 4 in the embodiment is eliminated, In a portion excluding one end portion, such as one that is connected to the iron core 5 of the operation member 7 in the vicinity of the one end portion 4a, has an inclined portion that extends in a direction inclined with respect to the other surface of the filter from the one end portion. When the angle formed between the inclined part and the other surface of the filter is increased, the other part of the inclined part is pressed against the other surface of the filter or the filter holding surface of the frame when connected to the operating member. Anything can be used.

１ 取付枠（枠体）
２ フィルタ
３ フィルタ押付機構
４ 板ばね
４ａ 一端部
４ｂ 他端部
４ｃ 湾曲部
４ｄ、４ｅ 長孔
５ 鉄芯
５ａ 小径部
５ｂ 操作部
６ キャップ
６ａ 環状溝
７ 操作部材
８ 係止片
９ 補助ばね
１０ 解除片
１１ 取付部
１２ ガイドレール
１２ａ、１２ｂ 切欠き
１３ フィルタ受け面
１４ フィルタ保持面
１５ ガイドレール
１６ Ｅリング
１７ 操作片
１８ 長孔
２１ 濾材
２２ フィルタ枠
２２ａ 窓
２４ ガスケット
２５ 面ファスナー
２６、２７ 連結部
３１ ケーシング（枠体）
３２ 開口部
３３ 扉
３４、３５ 内枠
３７ クレセント錠の可動金具
３８ クレセント錠の錠受け
３９ 伸縮ユニット
４０ フィルタ押付ユニット
４０ａ、４０ｂ、４０ｃ 分割ユニット
４１ 取付板
４３ 操作ねじ
４４ 連結片
４５ ガイド片
４６ 固定ナット
４７ 止めねじ
４８ スイベル
４９、５０ 連結器
５１ 張出片
５２ 係止片
５２ａ 係止部
５３ 付勢ばね
５４ 操作つまみ 1 Mounting frame (frame)
2 Filter 3 Filter pressing mechanism 4 Leaf spring 4a One end part 4b Other end part 4c Curved part 4d, 4e Long hole 5 Iron core 5a Small diameter part 5b Operation part 6 Cap 6a Annular groove 7 Operation member 8 Locking piece 9 Auxiliary spring 10 Release Piece 11 Mounting portion 12 Guide rail 12a, 12b Notch 13 Filter receiving surface 14 Filter holding surface 15 Guide rail 16 E ring 17 Operation piece 18 Long hole 21 Filter medium 22 Filter frame 22a Window 24 Gasket 25 Surface fasteners 26, 27 Connecting portion 31 Casing (frame)
32 Opening 33 Door 34, 35 Inner frame 37 Crescent lock movable bracket 38 Crescent lock lock 39 Telescopic unit 40 Filter pressing unit 40a, 40b, 40c Split unit 41 Mounting plate 43 Operation screw 44 Connection piece 45 Guide piece 46 Fixation Nut 47 Set screw 48 Swivel 49, 50 Connector 51 Overhang piece 52 Locking piece 52a Locking portion 53 Biasing spring 54 Operation knob

Claims (9)

フィルタと、前記フィルタが組み込まれる枠体と、前記フィルタの一面の周縁部を前記枠体のフィルタ受け面に押し付けるフィルタ押付機構とを備えたフィルタ装置において、
前記フィルタ押付機構は、前記フィルタの他面の周縁部とこれに対向する前記枠体のフィルタ保持面との間に配され、前記枠体またはフィルタに固定される一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部とこの傾斜部の他端側に形成される押圧部を有する板ばねと、前記板ばねに沿って延び、前記板ばねの一端部を除く部位に連結された操作部材と、前記操作部材を所定の係止位置で係止する係止手段とを備え、前記操作部材を長手方向に移動させて前記係止位置で係止したときに、前記板ばねの傾斜部と前記フィルタの他面とのなす角度が大きくなって、前記板ばねの押圧部で前記フィルタの他面または枠体のフィルタ保持面を押圧するものとしたことを特徴とするフィルタ装置。 In a filter device comprising: a filter; a frame in which the filter is incorporated; and a filter pressing mechanism that presses a peripheral portion of one surface of the filter against a filter receiving surface of the frame.
The filter pressing mechanism is disposed between a peripheral edge portion of the other surface of the filter and a filter holding surface of the frame body opposed to the filter, and from one end fixed to the frame body or the filter to the other surface of the filter. A leaf spring having an inclined portion extending in a direction inclined with respect to the inclined portion, a pressing portion formed on the other end side of the inclined portion, and extending along the leaf spring and connected to a portion excluding one end portion of the leaf spring. An operating member; and a locking means for locking the operating member at a predetermined locking position. When the operating member is moved in the longitudinal direction and locked at the locking position, the leaf spring is inclined. The filter device is characterized in that the angle formed by the portion and the other surface of the filter is increased and the other surface of the filter or the filter holding surface of the frame is pressed by the pressing portion of the leaf spring. 複数のフィルタと、前記各フィルタが一列に並ぶ状態で組み込まれる一つの枠体と、前記各フィルタの一面の周縁部を前記枠体のフィルタ受け面に押し付けるフィルタ押付機構とを備えたフィルタ装置において、
前記フィルタ押付機構は、前記各フィルタの他面の周縁部とこれに対向する前記枠体のフィルタ保持面との間に少なくとも一つずつ配され、前記枠体に固定される一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部とこの傾斜部の他端側に形成される押圧部を有する複数の板ばねと、前記各板ばねに沿って延び、前記各板ばねの一端部を除く部位に連結された一つの操作部材と、前記操作部材を所定の係止位置で係止する係止手段とを備え、前記操作部材を長手方向に移動させて前記係止位置で係止したときに、前記各板ばねの傾斜部と前記フィルタの他面とのなす角度が大きくなって、前記各板ばねの押圧部で前記各フィルタの他面を押圧するものとしたことを特徴とするフィルタ装置。 In a filter device comprising a plurality of filters, one frame incorporated in a state where the filters are arranged in a row, and a filter pressing mechanism that presses a peripheral edge of one surface of each filter against the filter receiving surface of the frame ,
At least one filter pressing mechanism is disposed between the peripheral edge of the other surface of each filter and the filter holding surface of the frame facing the filter, and the filter pressing mechanism is connected to the filter from one end fixed to the frame. A plurality of leaf springs having an inclined portion extending in a direction inclined with respect to the other surface, a pressing portion formed on the other end side of the inclined portion, and one end portion of each leaf spring extending along each leaf spring And a locking means for locking the operating member at a predetermined locking position, and the operating member is moved in the longitudinal direction to be locked at the locking position. The angle between the inclined portion of each leaf spring and the other surface of the filter is increased, and the other surface of each filter is pressed by the pressing portion of each leaf spring. Filter device. 濾材の周縁部をフィルタ枠で覆ったフィルタと、前記フィルタが組み込まれる枠体と、前記フィルタの一面側でフィルタ枠の側壁の外側面を前記枠体のフィルタ受け面に押し付けるフィルタ押付機構とを備えたフィルタ装置において、
前記フィルタ押付機構は、前記フィルタ枠の内側に配され、前記フィルタ枠に固定される一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部とこの傾斜部の他端側に形成される押圧部を有する板ばねと、前記板ばねに沿って延び、前記板ばねの一端部を除く部位に連結された操作部材と、前記操作部材を所定の係止位置で係止する係止手段とを備え、前記操作部材を長手方向に移動させて前記係止位置で係止したときに、前記板ばねの傾斜部と前記フィルタの他面とのなす角度が大きくなって、前記フィルタの他面側で、前記フィルタ枠の側壁に設けた窓から突出した前記板ばねの押圧部で、前記フィルタ枠の側壁の外側面と対向する前記枠体のフィルタ保持面を押圧するものとしたことを特徴とするフィルタ装置。 A filter having a filter frame covered with a filter frame, a frame in which the filter is incorporated, and a filter pressing mechanism that presses an outer surface of a side wall of the filter frame against a filter receiving surface of the frame on one surface side of the filter. In the filter device provided,
The filter pressing mechanism is disposed on the inner side of the filter frame, and is formed on one end portion fixed to the filter frame and extending in a direction inclined with respect to the other surface of the filter, and on the other end side of the inclined portion. A leaf spring having a pressing portion, an operating member extending along the leaf spring and connected to a portion excluding one end of the leaf spring, and a locking means for locking the operating member at a predetermined locking position When the operating member is moved in the longitudinal direction and locked at the locking position, the angle formed between the inclined portion of the leaf spring and the other surface of the filter is increased, On the surface side, the pressing portion of the leaf spring protruding from the window provided on the side wall of the filter frame presses the filter holding surface of the frame body facing the outer side surface of the side wall of the filter frame. A filter device. 濾材の周縁部をフィルタ枠で覆った複数のフィルタと、前記各フィルタが一列に並ぶ状態で組み込まれる一つの枠体と、前記各フィルタの一面側で各フィルタ枠の側壁の外側面を前記枠体のフィルタ受け面に押し付けるフィルタ押付機構とを備えたフィルタ装置において、
前記フィルタ押付機構は、前記各フィルタ枠の内側に少なくとも一つずつ配され、前記フィルタ枠に固定される一端部からフィルタの他面に対して傾斜した方向に延びる傾斜部とこの傾斜部の他端側に形成される押圧部を有する複数の板ばねと、前記各板ばねに沿って延び、前記板ばねの一端部を除く部位に連結された複数の操作部材と、前記各操作部材どうしを連結する連結手段と、前記操作部材のうちの一つを操作して各操作部材を所定の係止位置で係止する係止手段とを備え、前記各操作部材を長手方向に移動させて前記係止位置で係止したときに、前記各板ばねの傾斜部と前記フィルタの他面とのなす角度が大きくなって、前記フィルタの他面側で、前記各フィルタ枠の側壁に設けた窓から突出した前記各板ばねの押圧部で、前記各フィルタ枠の側壁の外側面と対向する前記枠体のフィルタ保持面を押圧するものとしたことを特徴とするフィルタ装置。 A plurality of filters whose peripheral portions are covered with a filter frame, a single frame body that is incorporated in a state where the filters are arranged in a row, and an outer surface of a side wall of each filter frame on the one surface side of each filter. In a filter device comprising a filter pressing mechanism that presses against a filter receiving surface of the body,
At least one filter pressing mechanism is arranged inside each filter frame, and extends from the one end fixed to the filter frame in a direction inclined with respect to the other surface of the filter. A plurality of leaf springs having a pressing portion formed on the end side, a plurality of operation members extending along each leaf spring and connected to a portion excluding one end portion of the leaf spring, and the operation members Connecting means for connecting, and locking means for operating one of the operating members to lock each operating member at a predetermined locking position, and moving each operating member in the longitudinal direction to A window provided on the side wall of each filter frame on the other surface side of the filter when the angle formed between the inclined portion of each leaf spring and the other surface of the filter is increased when locked at the locking position. The pressing portion of each leaf spring protruding from the Filter device is characterized in that it is assumed that presses the filter holding surface of the outer side surface opposite to the frame of the side wall of the filter frame. 前記フィルタ押付機構の板ばねの傾斜部および押圧部を、その押圧部が押圧する面に向かって凸となる湾曲部とし、この板ばねの湾曲部の他端側の部位を前記操作部材に連結し、前記操作部材を長手方向に移動させて前記係止位置で係止したときに、前記板ばねの湾曲部の湾曲が大きくなるようにしたことを特徴とする請求項１乃至４のいずれかに記載のフィルタ装置。   The inclined portion and the pressing portion of the leaf spring of the filter pressing mechanism are curved portions that are convex toward the surface pressed by the pressing portion, and the other end portion of the bending portion of the leaf spring is connected to the operation member. 5. The bending of the leaf spring is increased when the operating member is moved in the longitudinal direction and locked at the locking position. The filter device according to 1. 前記板ばねの湾曲部に、前記操作部材を通し、操作部材の長手方向移動を案内する長孔を設けたことを特徴とする請求項５に記載のフィルタ装置。   The filter device according to claim 5, wherein a long hole is provided in the curved portion of the leaf spring to guide the movement of the operation member in the longitudinal direction through the operation member. 前記操作部材は、直軸状に形成されて、その軸心まわりに回動自在に保持されるものであり、前記係止手段は、前記操作部材の外周面に径方向に張り出す張出片を設けるとともに、前記操作部材の回動方向で張出片と対向する係止部が操作部材の長手方向に沿って階段状に形成された係止片と、前記操作部材の張出片を前記係止片の係止部に押し付ける付勢ばねを設けて、前記操作部材を複数の係止位置で係止可能としたものであることを特徴とする請求項１乃至６のいずれかに記載のフィルタ装置。 The operating member is formed in a straight shaft shape, and is held so as to be rotatable about its axis, and the locking means is an overhanging piece projecting radially on the outer peripheral surface of the operating member provided with a, a locking piece engaging portion is formed in a stepped shape along the longitudinal direction of the operating member facing the protruding piece in the rotational direction of the operating member, Zhang piece of the operating member the The biasing spring that is pressed against the locking portion of the locking piece is provided so that the operation member can be locked at a plurality of locking positions. Filter device. 前記フィルタ押付機構の板ばね、操作部材および係止手段と、前記板ばねの一端部が固定され、前記枠体またはフィルタに取り付けられる取付板とをユニット化したことを特徴とする請求項１乃至７のいずれかに記載のフィルタ装置。   The plate spring of the said filter pressing mechanism, the operation member, and the latching means, The one end part of the said plate spring was fixed, and the attachment plate attached to the said frame or filter was unitized, The 1 thru | or characterized by the above-mentioned. The filter device according to any one of 7. 請求項８に記載のフィルタ装置に組み込まれ、前記板ばね、操作部材および係止手段を備えたフィルタ押付機構と、前記板ばねの一端部が固定され、前記枠体またはフィルタに取り付けられる取付板とからなるフィルタ押付ユニット。   A filter pressing mechanism that is incorporated in the filter device according to claim 8 and includes the leaf spring, an operation member, and a locking means, and an attachment plate that is fixed to one end of the leaf spring and is attached to the frame or the filter. Filter pressing unit consisting of
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