TWI771184B - Air filter screen and method for manufacturing air filter screen - Google Patents

Abstract

An air filter screen includes a filter material, a skeleton and a frame. The filter material has a wavy structure. The skeleton includes a first skeleton body and a second skeleton body. A surface of the first skeleton body and a surface of the second skeleton body are adjacent to each other and are provided with a first positioning surface and a second positioning surface, respectively. The first positioning surface and the second positioning surface are wavy and interlaced with each other. The filter material is disposed between the first skeleton body and the second skeleton. The first positioning surface and the second positioning surface both abut on two sides of the filter material, respectively. In addition, the first skeleton body and the second skeleton body are connected and fixed by a connecting mechanism, and the filter material is clipped and fixed between the first skeleton body and the second skeleton body. The frame is arranged on the outside of the frame by injection molding, so that the frame is wrapped around the skeleton. Therefore, a process of manufacturing is simple and easy, the skeleton body and the filter material can be tightly joined without any gaps, and the hermeticity is tighter and the product yield is higher.

Description

Air filter and method of making the same

The present invention relates to an air filter screen and a manufacturing method thereof, in particular to an air filter screen applied to filter air and a manufacturing method thereof.

With the increasing development of the industry, the air quality of life is getting worse and worse. How to make good use of air filters and other filtering products to help us block harmful substances is the basic common sense that modern consumers should have. The air filter is a special device for filtering air, mainly through the air passing through the air filter, so that the impurities with volume are adsorbed on the air filter, and then achieve the effect of filtration.

The existing air filter includes a frame body and a filter material. The filter material is folded into a wave shape and then fixed in the air filter channel of the frame body, thereby increasing the filter area. The frame body includes an upper cover and a lower cover. The upper cover and the lower cover are respectively provided with wave-shaped positioning surfaces to facilitate the positioning of the folded wave-shaped filter material, and then glue is applied between the upper cover and the lower cover to use the glue method. Engage the upper and lower covers so that the filter clip is placed between the upper and lower covers. However, in the above-mentioned manufacturing method of the air filter, due to the elasticity of the filter material folded into a wavy shape, it is easy to pop open, and the positioning is quite difficult, resulting in the manufacturing of the air filter is labor-intensive and time-consuming, and the manufacturing is very difficult, and the glue is easy to overflow. , It has shrinkage when dry and solid, so that gaps are easily formed between the upper cover, the lower cover and the filter material, the air tightness is low, it is easy to leak, and the product yield is low.

The technical problem to be solved by the present invention is to provide an air filter screen and a manufacturing method thereof in view of the deficiencies of the prior art, which is simple and easy to manufacture, and does not have the problems of glue overflowing and shrinking during drying, which can make the frame body and the filter material The tight joints between them will not produce gaps, the air tightness is high, and the product yield is high.

In order to solve the above-mentioned technical problems, the present invention provides a manufacturing method of an air filter, comprising the steps of: providing a filter material and a skeleton, the filter material is folded into a wave shape, and the skeleton includes a first frame body and a second frame body, The adjacent surfaces of the first frame body and the second frame body are respectively provided with a first positioning surface and a second positioning surface, the first positioning surface and the second positioning surface are wave-shaped, and the first positioning surface and the second positioning surfaces are staggered with each other, a connecting mechanism is set between the first frame body and the second frame body; the filter material is placed between the first frame body and the second frame body of the skeleton, and the The first positioning surface and the second positioning surface are in contact with both sides of the filter material, the first frame body and the second frame body are connected and fixed by the connecting mechanism, and the filter material is sandwiched and fixed on the first frame body and the second frame body. between the frame bodies; and a frame body is injection-molded on the outside of the frame, so that the frame body is covered outside the frame body, and the frame body is joined with the filter material and the frame body to make an air filter, the frame body is A filter air channel is formed, and the filter material is located in the filter air channel.

Preferably, the connecting mechanism includes a plurality of first engaging portions and a plurality of second engaging portions, the first engaging portions are arranged on the first frame body, and the second engaging portions are arranged on the On the second frame body, the first engaging portions and the second engaging portions can be engaged with each other.

Preferably, the connecting mechanism is disposed at both ends of the first frame body and the second frame body.

In order to solve the above technical problems, the present invention also provides an air filter, including: a filter material, the filter material includes a plurality of filter parts, and the filter parts are connected to each other to form a wave-like structure; a frame, the frame includes a first frame body and a second frame body, the adjacent surfaces of the first frame body and the second frame body are respectively provided with a first positioning surface and a second positioning surface, the first positioning surface and the second positioning surface are Wave-like and interlaced, a connecting mechanism is set between the first frame body and the second frame body, the filter material is placed between the first frame body and the second frame body of the skeleton, and the first positioning surface is And the second positioning surface is against both sides of the filter material, the first frame body and the second frame body are connected and fixed by the connecting mechanism, and the filter material is sandwiched and fixed between the first frame body and the second frame body of the skeleton. and a frame body, the frame body is disposed on the outside of the frame by injection molding, so that the frame body is wrapped outside the frame body, the frame body is joined with the filter material and the frame body, and a filter material is formed in the frame body. Air channel, the filter material is located in the air filter channel.

In order to solve the above technical problems, the present invention also provides an air filter, including: a filter material, the filter material includes a plurality of filter parts, and the filter parts are connected to each other to form a wave-like structure; a frame body, the frame body is injection-molded The frame body is arranged on the outside of the filter material, so that the frame body is wrapped outside the filter material, the frame body is joined with the filter material, and a filter air channel is formed in the frame body, and the filter material is located in the air filter channel.

The beneficial effect of the present invention is that the air filter screen of the present invention includes a filter material and a frame body, and the frame body is disposed outside the filter material by means of injection molding. Gap, high air tightness, and high product yield.

Furthermore, the air filter of the present invention can also include a frame, the frame includes a first frame body and a second frame body, and the adjacent surfaces of the first frame body and the second frame body are respectively provided with a first positioning surface and a second frame body. A second positioning surface, the first positioning surface and the second positioning surface are wavy and staggered with each other. The filter material is placed between the first frame body and the second frame body of the skeleton, and the first positioning surface and the second positioning surface abut the two sides of the filter material, and the filter material is clamped and fixed between the first frame body and the second frame body of the frame. During this time, the frame body is disposed on the outside of the frame by means of injection molding. The filter material can be positioned and maintained in a wave shape using the first positioning surface and the second positioning surface of the skeleton, so that the positioning of the filter material is relatively simple and easy, and the product yield can be high.

For a further understanding of the features and technical content of the present invention, please refer to the following detailed descriptions and drawings of the present invention. However, the drawings provided are only for reference and description, and are not intended to limit the present invention.

The following are specific specific examples to illustrate the embodiments disclosed in the present invention, and those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to the actual size, and are stated in advance. The following embodiments will further describe the related technical contents of the present invention in detail, but the disclosed contents are not intended to limit the protection scope of the present invention. In addition, the term "or", as used herein, should include any one or a combination of more of the associated listed items, as the case may be.

[Example]

Please refer to FIG. 1 to FIG. 4 , the present invention provides a manufacturing method of an air filter, including the following steps:

First, a filter material 1 and a frame 2 are provided (as shown in FIG. 1 ). The filter material 1 can be a material with air filtration effect, such as filter paper, but the material of the filter material 1 is not limited. connected to each other to form a wavy structure. The skeleton 2 can be made of plastic or rubber. The skeleton 2 can be made of ABS, PVC, PC, PP or PE. The material and shape of the skeleton 2 are not limited, and the shape of the skeleton 2 can be adapted to any The frame body 3 to be formed changes accordingly. The frame 2 includes a first frame body 21 and a second frame body 22 . The shape of the first frame body 21 and the shape of the second frame body 22 may correspond to each other, and the first frame body 21 and the second frame body 22 are adjacent to each other. The connecting side is respectively provided with a first positioning surface 23 and a second positioning surface 24, the first positioning surface 23 and the second positioning surface 24 are wavy, that is, the first positioning surface 23 and the second positioning surface 24 are serrated. , the first positioning surface 23 and the second positioning surface 24 are staggered with each other, so that the first positioning surface 23 and the second positioning surface 24 can be engaged with each other correspondingly.

A connecting mechanism 25 is arranged between the first frame body 21 and the second frame body 22, so that the first frame body 21 and the second frame body 22 can be connected and fixed by the connecting mechanism 25. The structure of the connecting mechanism 25 is not limited , which can be various existing clamping, screwing, bonding or other structures that can be used to connect the first frame body 21 and the second frame body 22. In this embodiment, the connection mechanism 25 is a clamping structure, and the connection The mechanism 25 may include a plurality of first engaging portions 251 and a plurality of second engaging portions 252 , the first engaging portions 251 are disposed on the first frame body 21 , and the second engaging portions 252 are disposed on the first frame body 21 . On the two frame bodies 22 , the first engaging portion 251 and the second engaging portion 252 can be corresponding hooks and slots, etc., so that the first engaging portions 251 and the second engaging portions 252 can interlock with each other.

Then, the filter material 1 is placed between the first frame body 21 and the second frame body 22 of the skeleton 2, and the first positioning surface 23 and the second positioning surface 24 abut both sides of the filter material 1, so that the filter material 1 is folded into a wavy shape. The filter material 1 can be positioned by the first positioning surface 23 and the second positioning surface 24 (as shown in FIG. 2 ), and the first frame body 21 and the second frame body 22 can be connected and fixed by the connecting mechanism 25 , and the filter material 1 can be clamped. Between the first frame body 21 and the second frame body 22 of the frame 2 , the filter material 1 can be positioned by the first positioning surface 23 and the second positioning surface 24 to maintain a wave shape. At this time, the filter material 1 protruding from the edge of the skeleton 2 can be removed, so that the edge of the filter material 1 and the edge of the skeleton 2 are aligned, so that the shape of the filter material 1 and the shape of the skeleton 2 correspond to each other.

Next, the filter material 1 and the skeleton 2 are placed in an injection molding machine (mold), and a frame body 3 is injection-molded outside the skeleton 2 (as shown in FIG. 3 and FIG. 4 ), so that the frame body 3 is covered with Outside the frame 2, the frame body 3 can be made of plastic or rubber. The material of the frame body 3 is not limited. Preferably, the frame body 2 and the frame body 3 can be made of the same material (such as ABS, PVC, PC, etc.). , PP or PE, etc.). The material of the frame body 3 is in a hot melt state during injection, and the material of the frame body 3 can be connected to the filter medium 1 and the skeleton 2. The material of the injection-molded frame body 3 forms a solid state after cooling, so that the frame body 3 and the filter medium are formed into a solid state. 1 and the frame 2 are firmly joined to form an air filter. A filter channel 31 is formed in the frame body 3 , and the filter material 1 is located in the filter channel 31 .

As shown in FIG. 1 to FIG. 4 , the present invention further provides an air filter, which includes a filter material 1 , a frame 2 and a frame body 3 .

The filter material 1 has a wave-like structure, and the filter material 1 includes a plurality of filter parts 11 . The filter parts 11 are connected to each other to form a wave-like structure. The filter parts 11 are arranged in an inclined shape, and each adjacent two filter parts 11 Then, a V-shaped structure is formed, so that the filter parts 11 form a plurality of connected V-shaped structures, thereby forming a wave-like structure. The frame 2 includes a first frame body 21 and a second frame body 22 . The shape of the first frame body 21 and the shape of the second frame body 22 may correspond to each other. In this embodiment, the first frame body 21 and the second frame body 22 The two frame bodies 22 are correspondingly elliptical or circular. The adjacent surfaces of the first frame body 21 and the second frame body 22 are respectively provided with a first positioning surface 23 and a second positioning surface 24. The first positioning surface 23 and the second positioning surface 24 are located between the first frame body 21 and the second frame body 22, the first positioning surface 23 and the second positioning surface 24 are wavy (serrated), the first positioning surface 23 and the second positioning surface The faces 24 are interleaved. Specifically, the first positioning surface 23 may include a plurality of first teeth 231 , and the first teeth 231 are all triangular in shape, and the second positioning surface 24 may include a plurality of second teeth 241 . The teeth 241 are all triangular shaped, and the first teeth 231 and the second teeth 241 are arranged in a staggered shape. The first positioning surface 23 forms a corresponding wave shape with one side of the filter material 1, and the second positioning surface 24 forms a corresponding wave shape with the other side of the filter material 1, so that the first positioning surface 23 of the first frame body 21 and the second positioning surface 23 of the first frame body 21 and the second The second positioning surface 24 of the frame body 22 can be matched with both sides of the filter medium 1 .

A connecting mechanism 25 is arranged between the first frame body 21 and the second frame body 22, so that the first frame body 21 and the second frame body 22 can be connected and fixed by the connecting mechanism 25, so that the first frame body 21 and the second frame body 22 can be connected and fixed. 22 can be preliminarily fixed so that there will be no displacement when placed in the mold. The connecting mechanism 25 can be a clip structure. Preferably, the connecting mechanism 25 is disposed at both ends of the first frame body 21 and the second frame body 22 to avoid interference between the connecting mechanism 25 and the filter material 1 . The connecting mechanism 25 may include a plurality of first engaging portions 251 and a plurality of second engaging portions 252 , the first engaging portions 251 are disposed on the first frame body 21 , and the second engaging portions 252 are disposed On the second frame body 22, in this embodiment, the first engaging portions 251 are hooks, and the second engaging portions 252 are card slots, so that the first engaging portions 251 and the second engaging portions 251 are engaged with The parts 252 can be snap-fitted to each other.

The filter material 1 is placed between the first frame body 21 and the second frame body 22 of the frame 2, and the first positioning surface 23 and the second positioning surface 24 abut both sides of the filter material 1, so that the wavy filter material 1 can be The first positioning surface 23 and the second positioning surface 24 in matching wave shape are used for positioning, and the first frame body 21 and the second frame body 22 are connected and fixed by the connecting mechanism 25, and the filter medium 1 is sandwiched and fixed on the Between the first frame body 21 and the second frame body 22 of the frame 2 , the filter material 1 can be positioned to maintain the wave shape by the first positioning surface 23 and the second positioning surface 24 being engaged with each other. In addition, the waste of the filter material 1 protruding from the edge of the skeleton 2 is removed, so that the edge of the filter material 1 is cut flush with the edge of the skeleton 2 .

The frame body 3 is disposed on the outside of the frame 2 by means of injection molding, so that the frame body 3 covers the frame body 2, and the frame body 3 is firmly joined with the filter material 1 and the frame body 2. The frame body 3 can make the frame body 3 2. The whole is covered, and the junction of the filter material 1 and the frame 2 is covered, so as to make an air filter. An air filter channel 31 is formed in the frame body 3, and the filter material 1 is located in the air filter channel 31. When the air to be filtered passes through the air filter channel 31, the air can pass through the filter material 1, so that impurities with a volume are adsorbed on the filter material 1. to achieve the effect of filtering.

Referring to FIG. 5 , in another embodiment of the present invention, the air filter includes a filter material 1 and a frame body 3 , the filter material 1 includes a plurality of filter parts 11 , and the filter parts 11 are connected to each other to form a wave-like structure . The frame body 3 is disposed on the outside of the filter medium 1 by injection molding, so that the frame body 3 is directly wrapped around the filter medium 1 , and the frame body 3 is joined with the filter medium 1 to form an air filter. An air filter channel 31 is formed in the frame body 3, and the filter material 1 is located in the air filter channel 31. When the air to be filtered passes through the air filter channel 31, the air can pass through the filter material 1, so that impurities with a volume are adsorbed on the filter material 1. to achieve the effect of filtering. This embodiment adopts a frameless design.

[Advantageous effects of the embodiment]

The beneficial effect of the present invention is that the air filter screen of the present invention includes a filter material and a frame body, and the frame body is disposed outside the filter material by means of injection molding. Gap, high air tightness, and high product yield.

Furthermore, the air filter of the present invention can also include a frame, the frame includes a first frame body and a second frame body, and the adjacent surfaces of the first frame body and the second frame body are respectively provided with a first positioning surface and a second frame body. A second positioning surface, the first positioning surface and the second positioning surface are wavy and staggered with each other. The filter material is placed between the first frame body and the second frame body of the skeleton, and the first positioning surface and the second positioning surface abut the two sides of the filter material, and the filter material is clamped and fixed between the first frame body and the second frame body of the frame. During this time, the frame body is disposed on the outside of the frame by means of injection molding. The filter material can be positioned and maintained in a wave shape using the first positioning surface and the second positioning surface of the skeleton, so that the positioning of the filter material is relatively simple and easy, and the product yield can be high.

The content disclosed above is only a preferred feasible embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, any equivalent technical changes made by using the contents of the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

1: filter material

11: Filtration Department

2: Skeleton

21: The first frame

22: Second frame

23: The first positioning surface

231: First tooth

24: Second positioning surface

241: Second tooth

25: Connecting Mechanism

251: The first snap part

252: The second snap part

3: Frame

31: Air filter channel

1 is a perspective exploded view of the filter material and the skeleton of the air filter of the present invention.

FIG. 2 is a three-dimensional combined view of the filter material and the skeleton of the air filter of the present invention.

FIG. 3 is a perspective view of the air filter screen of the present invention.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3 .

FIG. 5 is a perspective view of another embodiment of the air filter according to the present invention.

1: filter material

11: Filtration Department

2: Skeleton

21: The first frame

22: Second frame

23: The first positioning surface

231: First tooth

24: Second positioning surface

241: Second tooth

25: Connecting Mechanism

251: The first snap part

252: The second snap part

Claims (9)

A method for manufacturing an air filter, comprising the steps of: providing a filter material and a frame, the filter material being folded into a wave shape, the frame comprising a first frame body and a second frame body, the first frame body and the second frame The adjacent sides of the body are respectively provided with a first positioning surface and a second positioning surface, the first positioning surface and the second positioning surface are wavy, the first positioning surface and the second positioning surface are staggered with each other, the A connecting mechanism is arranged between the first frame body and the second frame body; the filter material is placed between the first frame body and the second frame body of the framework, and the first positioning surface and the second positioning surface are used. The two sides of the filter material are in contact with each other, and then the first frame body and the second frame body are connected and fixed by the connecting mechanism, and the filter material is sandwiched and fixed between the first frame body and the second frame body; and on the skeleton The external injection molding of a frame body, the shape of the frame corresponds to the frame body, so that the frame body is wrapped outside the frame body, the frame body is joined with the filter material and the frame body to make an air filter, the frame body A filter air channel is formed in the body, and the filter material is located in the air filter channel. The manufacturing method of an air filter according to claim 1, wherein the connecting mechanism comprises a plurality of first clipping parts and a plurality of second clipping parts, and the first clipping parts are disposed on the first frame body , the second clamping parts are arranged on the second frame body, and the first clamping parts and the second clamping parts are mutually clamped. The manufacturing method of the air filter according to claim 1, wherein the connecting mechanism is disposed at both ends of the first frame body and the second frame body. The method for manufacturing an air filter as claimed in claim 1, wherein after the filter material is sandwiched and fixed between the first frame body and the second frame body, the filter material protruding from the edge of the frame is removed, The edges of the filter media are cut flush with the edges of the skeleton. An air filter comprising: a filter material, the filter material includes a plurality of filter parts, the filter parts are connected to each other to form a wave-like structure; a frame, the frame includes a first frame body and a second frame body, the first frame body and the second frame The adjacent side of the body is respectively provided with a first positioning surface and a second positioning surface, the first positioning surface and the second positioning surface are wavy and staggered with each other, the first frame body and the second frame body are A connecting mechanism is arranged between the two sides of the filter material, and the filter material is placed between the first frame body and the second frame body of the skeleton, and the first positioning surface and the second positioning surface are in contact with both sides of the filter material, and the connecting mechanism is used to connect and fix the first frame body and the second frame body, the filter material is sandwiched and fixed between the first frame body and the second frame body of the frame; and a frame body, the frame body is disposed on the frame body by injection molding Outside the skeleton, the shape of the skeleton corresponds to the frame body, so that the frame body is wrapped outside the frame body, the frame body is joined with the filter material and the frame body, and a filter air channel is formed in the frame body, and the filter material is located in the filter material. in the air channel. The air filter as claimed in claim 5, wherein the connecting mechanism comprises a plurality of first clipping parts and a plurality of second clipping parts, the first clipping parts are disposed on the first frame body, the The second clamping parts are arranged on the second frame body, and the first clamping parts and the second clamping parts are clamped with each other. The air filter according to claim 5, wherein the connecting mechanism is disposed at both ends of the first frame body and the second frame body. The air filter according to claim 5, wherein the edge of the filter material is cut flush with the edge of the frame. The air filter according to claim 5, wherein the first positioning surface includes a plurality of first tooth portions, and the first tooth portions are all triangular in shape, the second positioning surface includes a plurality of second tooth portions, and the The second tooth portions are all triangular shaped, and the first tooth portions and the second tooth portions are arranged in a staggered shape.

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