KR101745470B1 - Filter assembly for range hood - Google Patents

Abstract

[0001] The present invention relates to a range hood filter assembly, in which an upper case and a lower case are integrally connected to each other at a front end portion thereof by a filter net support member, and a rear end portion thereof is fixed to a filter frame by a screw, And the upper case and the lower case are fastened to each other by the temporary fastening protrusion and the temporary fastening hole before the upper case and the lower case are fixed to the filter frame by the screw, And the slider inserted in the case is not freely disengaged. Thus, the assembling work is simplified. The filter network combines the plate-shaped wire mesh and the wave-shaped wire mesh to eliminate the gap between the filter meshes, The support of the filter net by the frame is firmly done One will be good.

Description

Filter assembly for range hood < RTI ID = 0.0 >

The present invention relates generally to a range hood filter assembly, and more particularly, to a filter assembly for a filter hood, which comprises a filter frame and a filter net, wherein the upper case and the lower case are firmly coupled to each other, The slider inserted into the case is not freely detached, so that the assembling work is simplified, and the filter net is made solid and the filter net is firmly supported by the filter frame.

Generally, a range hood for quickly discharging combustion gas, smoke, and odors generated during cooking to the outside of the kitchen is provided on the upper part of the kitchen range.

A filter and an exhaust fan are installed inside the hood to filter soot and harmful substances from the combustion gas, smoke, and odor, and to filter the exhaust gas from the combustion gas, smoke and odor to the outside of the apartment house through a duct. A filter guard is installed at the lower end of the hood, It is periodically removed, cleaned or replaced so that it can be reinstalled.

Therefore, the filter guard needs to be easily removable with respect to the lower end of the hood.

As a prior art related to the conventional filter guard, Korean Utility Model Registration No. 20-0199409 (registered on Aug. 1, 2000) "Filter hood detachment device of the range hood" (hereinafter referred to as "Prior art 1" And a pin guide hole is formed in the inner surface of both side walls of the hood main body so that the filter guard is inserted and removed by inserting or removing the both side insertion fins of the filter guard into or from the pin guide hole, So that detachment can be easily performed.

However, in the prior art 1, since the filter unit can not be completely removed from the fastening frame at the lower end of the hood, the filter can not be cleaned and can not be kept clean.

As a prior art for solving such a problem, a filter guard of a range hood (hereinafter referred to as " Prior Art 2 ") registered in Korea Registered Utility Model No. 20-0303020 (registered on January 20, 2003) Wherein the filter guard is attached to and detached from the fastening frame of the range hood so that the filter guard is inserted into the fastening hole of the fastening frame through the fastening piece of the detachable / And a metal plate for forming a gripping hole on the upper surface and a grip hole on the upper surface thereof is formed by compression molding of a cap-like shape formed on the upper side of the inner side of the fastening piece, The body is made elastic by a spring so that the filter guard can be completely separated from the fastening frame at the lower end of the hood, , There is no fixed discloses a technique that is easy to use.

However, in the prior art 2, since there is no guide member guided by the interlocking body moved in the case, the interlocking body is restricted in mobility when moving the interlocking body in the case, so that the movement is not smoothly performed, There is a problem that the defective occurrence rate is increased.

As a prior art for solving such a problem, a filter guard of a range hood (hereinafter referred to as " Prior Art 3 ") of Korean Patent Registration No. 10-0620499 The filter guard comprises a coupling body projecting from the filter guard so as to be attached to and detached from the coupling frame of the hood, and a case accommodating the coupling body. The filter guard comprises a body portion formed by compression molding with a metal plate, A plurality of fasteners formed in the longitudinal direction, a plurality of fasteners formed on the front side, a guide member formed on the left and right sides of the guide member and bent outwardly, and a spring fastening piece formed thereon, The spring fastening pieces are formed on the right and left sides by forming the step portions inwardly, A case having a guide piece for supporting and guiding the guide piece, a spring fastening piece formed on the left and right sides of the interlocking body, and a spring fixed to the spring fastening piece formed on the right and left sides of the case to give elasticity to the interlocking body, And the spring of the elastic force is fixed to the spring fixing piece which is cut in the right and left sides of the outer wall of the case and inward to fix the spring to the inner side of the case, And a spring coupling member is protruded on both sides, so that it is easy to assemble and is easy to manufacture, thereby reducing the production cost and labor cost.

However, in the prior art 3, since the case is in contact with the lower surface of the filter (net), the case and the filter (net) are not firmly coupled to each other, and assembly is troublesome and the defect rate is increased.

Therefore, in recent years, an upper case and a lower case, which are respectively in contact with upper and lower surfaces of a filter net in which an edge is inserted into a rectangular filter-guard frame formed by bending a C-shaped member, And the rear end side latch protrusion protruded through the rear end surface of the upper case and the lower case is inserted and fastened to the rear end latch hole formed in the lower end frame of the hood.

The upper case and the lower case are completely separated from each other and the first bent part formed at the rear end of the upper case in a state in which the upper case is in contact with the upper surface of the filter net and the lower case is in contact with the lower surface of the filter net, The screw is passed through the screw through hole of the rear end face of the filter guard frame and the screw through hole of the first bent portion in a state in which the second bend formed in the rear end portion of the lower case is in close contact with the rear face of the first bent portion And the upper case and the lower case are fixed to the filter guard frame by fastening them to the screw fastening holes formed in the second bent portion.

However, since the upper case and the lower case are fixedly coupled to the filter guard frame only by the first and second bent portions and the screws, the upper case and the lower case are installed so as to be in close contact with the upper and lower surfaces of the filter net The upper case and the lower case are fluidized with respect to the filter net, so that the coupled state is not secured.

According to such a coupling state, the incidence of failure increases during the assembling process, and the upper case and the lower case are lifted up on the upper and lower surfaces of the filter net during use, resulting in failure of operation and inconvenience of use.

In addition, a filter mesh having a thickness of about 1 mm is inserted into a filter guard frame having a width of 7 mm inside, so that a gap of 5 mm is formed between the filter meshes, and the filter mesh is firmly supported .

Since the upper case and the lower case are completely separated from each other, when the slider is inserted between the upper case and the lower case, the upper case and the lower case are firmly held by hand while assembling the filter frame and the filter net The assembling work is troublesome and the upper case and the lower case are separated from each other before the assembling is completed and the slider is pulled out.

Accordingly, the upper case and the lower case are fixedly coupled to the filter guard by a screw, and the upper case and the lower case are integrally formed, and a coupling structure with the filter (net) is provided so that the entire filter guard can be firmly assembled Has been demanded.

Further, development of a technology for firmly supporting the edge of the filter net with respect to the filter guard frame is required.

Registered Utility Model No. 20-0199409 (Registered on August 1, 2000.) "Filter guard attachment / detachment device of range hood" Korea Registered Utility Model No. 20-0303020 (Registered on January 20, 2003) "Filter guard of range hood" Korea Registered Patent No. 10-0620499 (Registered on August 29, 2006) "Filter guard of range hood"

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a range hood filter assembly in which the filter frame constituting the filter assembly and the upper case and the lower case of the filter net are firmly coupled

It is another object of the present invention to provide a range hood filter assembly in which a case coupled to a filter network is not arbitrarily separated and a slider inserted in a case is not arbitrarily detached, thereby facilitating the assembling work.

Another object of the present invention is to provide a range hood filter assembly in which the filter network is firm and the support of the filter net by the filter frame is robust.

According to an aspect of the present invention, there is provided a hood structure including a hood frame provided at a lower end of a hood, and a filter assembly detachably coupled to the hood frame. The hood frame has a front end latch hole, And a rear end latch is provided at a rear end of the filter assembly. The filter assembly is provided with a front end latch which is inserted into the front end latch hole at the front end side and a rear end latch which is inserted into the rear end latch hole at the rear end, A filter net composed of a plurality of layers formed in a U shape by an additional cut-out portion; A filter frame coupled to an edge of the filter net, the filter frame having a front end latch protruding from a front end thereof and a rear end latch protruding / A case coupled to a rear end of the filter frame and supporting a rear end of the filter net; A slider inserted in the case so as to be slidable in the front-rear direction, the slider having the rear-end latch integrally formed therein; And a latch spring for resiliently supporting the slider inside the case backward so that the rear end latch is always protruded from the rear end of the filter frame. The case contacts the upper surface of the filter net, And a first bent portion formed at a rear end of the filter frame and closely contacted with a rear end surface of a rear end portion of the filter frame; a lower plate contacting the lower surface of the filter net and formed at a rear end of the lower plate, A lower case having a second bent portion which is brought into close contact with an inner surface of the bent portion and a filter net supporting piece connecting the upper end of the upper case and the lower end of the lower case and having the tip end portion of the cut- The first folded portion of the upper case is provided with a screw for passing the screw for fixing the case to the filter frame, A screw hole for fastening the screw is formed in the second bent portion of the lower case, a latch protrusion and a hole for protruding and retreating the rear end latch are formed in the first bent portion of the upper case, And a finger entrance hole for allowing a finger to approach the slider is formed in the lower plate portion of the range hood filter assembly.

A temporary fastening protrusion protruding inward is formed in the first bent portion of the upper case and a temporary fastening hole is formed in the second bent portion of the lower case to insert the temporary fastening protrusion.

The latch spring is a compression coil spring. The latch spring has a spring rear end hook which is engaged with a spring end holding piece whose tip end extends rearwardly from the upper plate portion of the upper case and whose rear end extends forwardly to the slider body of the slider. As shown in FIG.

The latch spring is formed in a tapered shape in which the tip end and the rear end portion of the latch spring are tightly wound and the diameter is made narrower toward the front end and the rear end.

The filter network may be composed of an upper layer filter network made of a wire mesh of flat plate type and a lower filter network made of a wire mesh network.

The filter network may be composed of an upper filter net made of a wire net and a lower filter net made of a wire net.

The filter network may be composed of an upper filter net made of a flat metal net, a lower filter net made of a flat metal net, and an interlayer filter net made of a wire net.

According to the range hood filter assembly of the present invention, the upper case and the lower case are integrally connected to each other at the front end portion by the filter net support piece, and the rear end portion is fixed to the filter frame by the screw, The upper case and the lower case can be firmly engaged with each other.

According to the range hood filter assembly of the present invention, since the upper case and the lower case are fastened by the temporary fastening protrusion and the temporary fastening hole before being fixed to the filter frame by the screw, the case coupled to the filter net is not inserted So that the assembling work is simplified.

In addition, according to the range hood filter assembly of the present invention, the filter network combines a plate-shaped wire mesh and a wave-shaped wire mesh to eliminate the gap between the filter meshes, thereby firmly securing the filter mesh, It becomes robust.

1 to 10 show a preferred embodiment of the range hood filter assembly according to the present invention,
1 and 2 are a top perspective view and a bottom perspective view showing a state in which the hood frame and the filter assembly are separated,
3 is an exploded perspective view of the filter frame, the filter net, the upper and lower cases, and the latch slider,
4 is an exploded perspective view of the filter frame, the filter net, the upper case, the lower case, and the latch slider,
5 is a partially cutaway perspective view showing another example of the filter network,
6 is a partially enlarged cross-sectional view showing another example of the filter network,
7 is a perspective view of a case and a slider,
8 and 9 are top and bottom exploded perspective views of the upper and lower cases, the latch slider and the spring,
10 is a vertical cross-sectional view showing the filter frame, the filter net, the case, the slider, and the spring.

Hereinafter, a range hood filter assembly according to the present invention will be described in detail with reference to the preferred embodiments illustrated in the accompanying drawings.

1 to 10 show a preferred embodiment of the range hood filter assembly according to the present invention.

1 and 2, the range hood filter assembly according to the present embodiment includes a hood frame HF provided at the lower end of the hood, a filter assembly FA (not shown) detachably coupled to the hood frame HF, ).

The hood frame HF is formed in the shape of a star by a front end portion 10, a rear end portion 20, a left side portion 30 and a right side portion 40 formed in a cross section of a star shape, End latch hole H1 and a rear-end latch hole H2 are formed on the end surfaces of the rear end portion 20 and the rear end portion 20, respectively.

The filter assembly FA is provided with a front end latch L1 to be inserted into the front end latch hole H1 at the front end side and a rear end latch L2 to be inserted into the rear end latch hole H2 at the rear end side Respectively.

The filter assembly FA includes a filter net 100 having a C-shape at the rear end thereof; A filter frame 200 coupled to an edge of the filter net 100 and having the front end latch L1 protruding from the front end and the rear end latch L2 projecting from the rear end of the filter frame 200; A case 300 coupled to a rear end of the filter frame 200 and supporting a rear end of the filter net 100; A slider 400 slidably inserted in the case 300 in the front-rear direction and integrally formed with the rear-end latch L2; And a latch spring 500 that elastically supports the slider 400 backward in the case 300 so that the rear end latch L2 always protrudes from the rear end of the filter frame 200. [

As shown in FIGS. 1 to 4, the filter network 100 may have a two-layer structure including an upper layer filter network 110 and a lower layer filter network 120. In the illustrated example, the upper layer filter network 110 is formed of a mesh network having a diamond mesh and the lower layer filter network 120 is formed of a mesh network having a trapezoidal mesh. However, the upper layer filter network 110 may have a trapezoidal mesh The lower layer filter net 120 may be formed of a wire mesh having a diamond mesh.

As shown in FIG. 5, the filter network 100 may have a three-layer structure in which an interlayer filter network 130 is inserted between an upper layer filter network 110 and a lower layer filter network 120. In the illustrated example, the upper layer filter network 110 and the lower layer filter network 120 are formed of a mesh network having a trapezoidal mesh and the mesh filter network 130 is formed of a mesh network having a diamond mesh. However, the upper layer filter network 110 And the lower layer filter network 120 may be formed of a wire mesh having diamond-shaped mesh, and the intermediate-layer filter network 130 may be formed of a wire mesh having a trapezoidal mesh.

The rectangular cutouts 111, 121, and 131 are formed at the rear middle portions of the upper layer filter network 110, the lower layer filter network 120, and the intermediate layer filter network 130 that constitute the filter network 100, 100 may be formed in a U-shape.

6 (a), the filter network 100 may be constituted by an upper layer filter network 110 formed of a flat metal network and a lower filter network 120 formed of a wave network, As shown in Fig. 6 (b), an upper layer filter network 110 made of a wire mesh network and a lower layer filter network 120 made of a flat mesh network can be used. Alternatively, as shown in Fig. 6 (c) As shown in the figure, the upper filter network 110 may be a flat metal network, the lower filter network 120 may be a flat metal network, and the middle filter network 130 may be a wave network. .

In this way, the filter network 100 can be firmly constructed by removing the gaps between the upper layer filter network 110, the lower layer filter network 120, and the intermediate layer filter network 130 by including the wave network.

The filter frame 200 is formed in a U-shaped cross section and has a front end portion 210, a rear end portion 220, a left side portion 230, and a right side portion 230 where the edges of the upper layer filter network 110 and the lower layer filter network 120 are inserted. (240).

The filter frame 200 cuts an aluminum sash extruded into a U-shaped section by 90 degrees, and cuts between the front end portion 210 and the left side portion 230, between the front end portion 210 and the right side portion 240, Between the left side portion 230 and the rear end portion 220 and the right side portion 240 is not completely cut so that only one portion is completely cut so that the uncut portion is bent at 90 degrees and the completely cut portion Shaped connecting piece 250 and the screws 253 and 254 to form a rectangular shape.

In the illustrated example, the tip end portion 210 and the right side portion 240 are completely cut off and the L-shaped connecting piece 250 is inserted into the front end portion 210 and the right side portion 240 to form a screw through hole 211 And the screws 253 and 254 passing through the screw through holes 241 formed in the right side portion 240 are connected to the screw holes 251 and 252 formed in the connecting piece 250 by fastening them. However, the parts that are completely cut and connected by the connecting pieces 250 and the screws 253 and 254 are connected between the front end 210 and the left side part 230, between the rear end part 220 and the left side part 230, And the right side portion 240 of FIG.

And the front end latch 210 is provided on the distal end of the distal end portion 210. The front end latch L1 can be formed integrally with the front end portion 210 by slotting and bending three sides by press working.

A rear end latch through hole 221 is formed in the rear end 220. The rear-end latch through-hole 221 can be formed by press working.

The rear end portion 220 is formed with a screw through hole 222 through which a screw 223 for fixing a case 300 described later passes.

The case 300 includes an upper case 310 contacting the upper surface of the upper filter net 110, a lower case 320 contacting the lower surface of the lower filter net 120, And a filter net support piece 330 connecting the tip of the case 320 and having the tip end portions of cutouts 111, 121 and 131 of the filter net 100 inserted and supported.

The upper case 310 includes a top plate 311 and a first bending part 312 bent at a rear end of the top plate 311 and closely attached to a rear end surface of the rear end 220 of the filter frame 200. And a circumferential wall 313 formed along three sides except for the rear end of the upper plate 311. The lower case 320 includes a lower plate 321 and a rear wall 311 formed on the rear end of the lower plate 321 And a peripheral wall 323 formed along three sides except for the rear end of the lower plate 321. The second bent portion 322 is formed to be in contact with the inner surface of the first bent portion 312.

The main wall portion 313 of the upper case 310 and the main wall portion 323 of the lower case 320 are substantially in contact with the upper surface of the upper layer filter net 110 and the lower surface of the lower layer filter net 120 .

A screw through hole 314 through which a screw 223 for fixing the case 300 to the filter frame 200 is formed is formed in the first bent portion 312 of the upper case 310, A screw fastening hole 324 for fastening the screw 223 is formed in the second bent portion 322 of the case 320.

A temporary fastening protrusion 315 protruding inward is formed in the first bent portion 312 of the upper case 310. The temporary fastening protrusion 315 is formed in the second bent portion 312 of the lower case 320, Is inserted into the temporary fastening hole 325 is formed.

The temporary fastening protrusion 315 may be formed by embossing so as to protrude inward toward the inside.

The first folding part 312 of the upper case 310 is formed with a latching and protruding hole 316 through which the rear end latch L2 protrudes and retracts.

A finger entry hole 326 is formed in the lower plate portion 321 of the lower case 320 so that the finger can be approached to the finger holding jaw 431 of the slider 400 described later.

Guide pieces 317 for guiding the slider 400 are formed on both sides of the upper case 310. The guide piece 317 is bent at the circumferential wall 313 and spaced downward from the lower surface of the upper plate 311.

6, the upper case 310, the lower case 320, and the filter net supporting piece 330 are formed in a state in which the upper case 310 and the lower case 320 are unfolded, 1 to 4 and 9, when the upper case 310 and the lower case 320 are folded so as to be parallel to each other during assembly, As shown in the drawing, the filter net support piece 330 is formed in a C-shape open at the front side so that the upper case 310 and the lower case 320 are parallel to each other during assembly, The tip portions of the cut-out portions 111, 121, and 131 are inserted and supported.

7 and 8, the upper case 310 and the lower case 320 are shown as being separated from each other. However, the upper case 310 and the lower case 320 are integrally formed by the filter net support piece 330.

The slider 400 includes a slider body 410 having a rear end latch L2 integrally formed at a rear end thereof and a slider body 410 formed at both sides of the slider body 410 and between the upper plate 311 and the guide pieces 317 And a finger holding protrusion 431 which is bent at the slider body 410 and is accessible through the finger entry hole 326 of the lower case 320 430 are provided.

The latch spring 500 is a compression coil spring and its distal end portion is caught by the spring end hanging piece 510 formed on the upper plate portion 311 of the upper case 310 and the rear end portion is engaged with the slider body 410 of the slider 400 are hooked by the spring rear-end hanging pieces 520, so that the slider 400 is elastically supported backward.

The spring end hanging piece 510 is formed integrally with the upper plate 311 by slotting and bending three sides of the upper plate 311 by press working, May extend rearwardly between the slider body 410 and the guide vane 420. [

The latch spring 500 is formed in a tapered shape in which the front end portion and the rear end portion are tightly wound and the diameter is gradually reduced toward the front end and the rear end so that when the spring end hanging piece 510 and the spring rear end hanging piece 520 are hooked, It is preferable that the spring 500 is not deformed.

Hereinafter, the operation of the range hood filter assembly according to the present embodiment will be described.

The filter network 100 prepares an upper layer filter network 110, a lower layer filter network 120 and an intermediate layer filter network 130 in a superimposed state with cutouts 111, 121 and 131 formed therein.

The filter frame 200 is disposed between the front end portion 210 and the left side portion 230 and between the front end portion 210 and the right side portion 240 and between the rear end portion 220 and the left side portion 230, 240 are not completely cut off but only one part is completely cut.

At this time, the front end portion 210, the rear end portion 220, the left side portion 230, and the right side portion 240 are unfolded in a straight line.

6, when the upper case 310 and the lower case 320 are opened, the slider 400 is inserted between the upper plate 311 and the guide pieces 317 of the upper case 310, And the rear end latch L2 formed integrally with the slider 400 is passed through the latch projection and recess hole 316 formed in the first bent portion 312 and the latch spring 500 are hooked on the spring end hanging pieces 510 formed on the upper plate portion 311 of the upper case 310 and the rear end portions are hooked on the spring rear end hanging pieces 520 formed on the slider body 410 of the slider 400 Thereby allowing the slider 400 to be elastically supported backward by the latch spring 500. [

The edge portions of the cut-out portions 111, 121, and 131 of the upper layer filter network 110, the lower layer filter network 120, and the intermediate layer filter network 130 are extended over the peripheral wall 323 of the lower case 320 The upper case 310 and the lower case 320 are turned in directions approaching each other so that the filter case 330 is bent so that the upper case 310 and the lower case 320 are parallel to each other, (330) is opened to the tip side.

At this time, the edges of the cut-out portions 111, 121, 131 of the upper layer filter network 110, the lower layer filter network 120 and the intermediate layer filter network 130 are connected to the peripheral wall 313 of the upper case 310, 320 of the lower layer filter network 130 and the cutout portions 111, 121 of the lower layer filter network 120 and the middle layer filter network 130 are connected to the filter net support piece 330, And 131 are inserted.

At this time, the first bent portion 312 of the upper case 310 is positioned on the rear side and the second bent portion 322 of the lower case 320 is positioned on the front side so as to be in close contact with each other. The upper fastening protrusion 315 formed in the first bent portion 312 is inserted into the temporary fastening hole 325 formed in the second bent portion 322 of the lower case 320 so that the upper case 310 and the lower case 320 320 are integrally connected to each other by the filter net support piece 330 at the front end portion and at the rear end portion by the fastening of the temporary fastening protrusion 315 and the temporary fastening hole 325 to the first bending portion 312 and the second bending portion 325, The upper case 310 and the lower case 320 are not separated from each other even if the operator does not hold the upper case 310 and the lower case 320 by hand and the slider 400 Can slide between the upper case 310 and the lower case 320 without releasing the latch spring 500, And can be held in a state in which it is elastically supported.

The slider 400 is inserted between the upper case 310 and the lower case 320 and is elastically supported by the latch spring 500. The upper case 310 and the lower case 320 are connected to the filter net 100, And becomes a combined state.

The handle 430 of the slider 400 is exposed through the finger entry hole 326 of the lower case 320 so that the user can enter the finger into the handle 430 through the finger entry hole 326 (See FIG. 9).

The case 300 in which the filter net 100 is coupled together with the front end of the filter net 100 is inserted into the rear end 220 of the filter frame 200 extending in a straight line, The rear end latch L2 is projected rearward through the rear end latch through hole 221 formed in the rear end 220. [

The left side edge 230 and the right side portion 240 of the filter net 200 are folded on both sides of the rear end 220 of the filter frame 200 so that the left side edge and the right side edge of the filter net 100 are sandwiched between the left side portion 230 and the right side portion 240 The distal end portion of the filter net 100 is inserted into the distal end portion 210 by folding the distal end portion 210 at the distal end portion of the left side portion 230.

At this time, the connecting piece 250 is inserted into the right end portion of the front end portion 210 of the filter frame 200 and the front end portion of the right side portion 240 and the screw through holes 211 and 241 formed in the front end portion 210 and the right side portion 240 The screw frames 253 and 254 are screwed into the screw holes 251 and 252 formed in the connecting piece 250 so that the front ends of the right and left ends 240 and 240 of the front end portion 210 are coupled, To form a perfect rectangle.

Through the screw through hole 222 formed in the rear end portion 220 of the filter frame 200 and the screw passing hole 314 formed in the first bent portion 312 of the upper case 310 The case 200 is fastened to the rear end 220 of the filter frame 200 by fastening it to the screw fastening hole 324 formed in the second bent portion 322 of the lower case 320. [

The second bent part 322 of the lower case 320 is directly fastened to the rear end 220 of the filter frame 200 by the screw 223 and the first bent part 312 of the upper case 310 Is stuck between the rear end portion 220 of the filter frame 200 and the second bent portion 322 of the upper case 310 so that both the upper case 310 and the lower case 320 are engaged with each other of the filter frame 200 And is firmly coupled to the rear end 220.

As a result, the slider 400 is slidably inserted and resiliently installed by the latch spring 500, and the case 200 to which the filter net 100 is coupled is coupled to the filter net 100 and the filter frame 200.

When the filter assembly FA is assembled to the hood frame HF, the filter assembly FA is first assembled with the front end latch 210 provided at the front end 210 of the filter frame 200 with the filter assembly FA inclined downward, (L1) is inserted into the front end latch hole (H1) provided at the front end (10) of the hood frame (HF).

The finger is inserted through the finger entry hole 326 of the lower case 320 to be hooked on the finger hook protrusion 431 of the finger grip 430 of the slider 400 and forwardly pushed, And the rear end latch L2 is moved inwardly in the rear end latch through hole 221 formed in the rear end 220 of the filter frame 200. As a result,

The rear end latch hole 221 formed in the rear end portion 220 of the filter frame 200 is lifted up by the rear end latch 20 of the rear end portion 20 of the hood frame HF while lifting the rear end portion of the filter assembly FA upward, The slider 400 is moved backward by the elastic force of the latch spring 500 that has stored the elastic force when the slider 400 is pushed forward The rear end latch L2 integrally formed with the slider 400 is inserted into the rear end latch hole H2 of the rear end portion 20 of the hood frame HF while protruding from the rear end latch through hole 221, do.

The coupling of the filter assembly FA and the hood frame HF is completed by fastening the front end latch L1 and the front end latch hole H1 and fastening the rear end latch L2 and the rear end latch hole H2.

In order to separate the filter assembly FA coupled to the hood frame HF, a finger enters through the finger entry hole 326 and is hooked on the finger hook jaw 431 of the handle 430 of the slider 400, The slider 400 is slid forward so that the rear end latch L2 comes out of the rear end latch hole H2 of the hood frame HF and the rear end latch hole L2 of the rear end portion 220 of the filter frame 200 221 so that the rear end latching by the rear end latch L2 and the rear end latching by the rear end latching hole H2 are released.

In this state, the rear end of the filter assembly FA is inclined downward so that the rear end of the filter assembly FA is pulled out from the rear end of the hood frame HF. Then, when the filter assembly FA is pulled backward, Is released from the front end latch hole H1 so that the front end latching by the front end latch L1 and the front end latch hole H1 is released and the filter assembly FA can be completely separated from the hood frame HF.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

HF: Hood frame FA: Filter assembly
L1: front end latch L2: rear end latch
H1: Lead latch ball H2: After latch ball
100: filter network 110: upper layer filter network
120: lower layer filter network 130: middle layer filter network
111, 121, 131: cut-out portion 200: filter frame
250: connecting piece 253, 254: screw
300: Case 310: Upper case
311: upper plate portion 312: first bent portion
313: circumferential wall 314: screw hole
315: Temporary fastening protrusion 316: Latch protrusion ball
317: guide piece 320: lower case
321: lower plate portion 322: second bent portion
323: main wall part 324: screw fastening hole
325: Temporary fastening hole 326: Finger entry hole
330: filter net support piece 400: slider
410: slider body 420: guide blade
430: handle portion 431: finger hanger jaw
500: latch spring 510: spring tip hook piece
520: Spring rear end hook piece

Claims (7)

A hood frame (HF) having a front end latch hole (H1) at the front end and a rear end latch hole (H2) at the rear end;
A filter assembly FA having a front end latch L1 inserted into the front end latch hole H1 at the front end side and a rear end latch L2 inserted into the rear end latch hole H2 at a rear end side;
The filter assembly (FA) includes a filter net (100) having a rear end formed in a U shape by a cut-out portion;
A filter frame 200 coupled to an edge of the filter net 100 and having a front end latch L1 protruding from a front end thereof and a rear end latch protrusion and recess hole 221 through which a rear end latch L2 protrudes and retracts from a rear end thereof, )and;
A case 300 coupled to a rear end of the filter frame 200 and supporting a rear end of the filter net 100;
A slider 400 slidably inserted in the case 300 in the front-rear direction and integrally formed with the rear-end latch L2;
And a latch spring 500 for elastically supporting the slider 400 in a backward direction inside the case 300 so that the rear end latch L2 always protrudes from the rear end of the filter frame 200,
The case 300 includes a top plate 311 contacting the top surface of the filter net 100 and a rear end portion bent at a rear end of the top plate 311 to define a rear end of the rear end 220 of the filter frame 200, An upper case 310 having a first folding part 312 and a first folding part 312 and a latching and projecting hole 316 formed in the first folding part 312 to project and retract the rear latching L2, And a second bent portion 322 which is formed on the rear end of the lower plate portion 321 and is in close contact with the inner surface of the first bent portion 312, In the case including the case 320,
The upper end of the upper case 310 and the lower end of the lower case 320 are connected to each other so as to protrude inwardly of the case 300 and are concaved outwardly so that the distal end of the cut- Further comprising: a filter net support piece (330) which is inserted and supported.
The method according to claim 1,
A temporary fastening protrusion 315 protruding inward is formed in the first bent portion 312 of the upper case 310. The temporary fastening protrusion 315 is formed in the second bent portion 312 of the lower case 320, And a temporary fastening hole (325) for receiving the fastening hole (325) is formed.
The latch spring (500) according to claim 1, wherein the latch spring (500)
A compression coil spring is used,
The latch spring 500 has a distal end portion
Is hooked on the spring end hanging piece (510) extending backward to the upper plate portion (311) of the upper case (310)
And a rear end portion of the slider (400) is hooked on a spring rear end hanging piece (520) formed forwardly of the slider body (410) of the slider (400).
4. The apparatus of claim 3, wherein the latch spring (500)
Wherein the latch spring (500) is formed in a tapered shape in which a front end portion and a rear end portion are tightly wound and a diameter is reduced in a braille shape toward a front end and a rear end.
The apparatus of claim 1, wherein the filter network (100)
An upper layer filter network 110 made of a wire mesh of flat plate type,
And a lower layer filter net (120) made of a wire type wire net.
The apparatus of claim 1, wherein the filter network (100)
An upper layer filter network 110 made of a wire-like wire net,
And a lower layer filter net (120) made of a wire mesh of flat plate type.
The apparatus of claim 1, wherein the filter network (100)
An upper filter net 110 formed of a flat metal net,
A lower filter net 120 formed of a flat metal net,
And a middle layer filter net (130) made of a wire type wire net.

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