TWI810850B - Filter element and filter element assembly method - Google Patents

Abstract

This creation is a filter element and an assembly method of the filter element. This creation uses the property that the foam material will expand after foaming, so that the foam material will pass through the filter element frame after foaming and connect to the core material, thereby fixing the filter element frame and the core material. At the same time, after foaming, the foam material can be used to lean against the shell to close the gap between the filter element and the shell. This creation only needs one foaming molding to have the above two functions, so the manufacturing process can be greatly simplified, and there is no need in the manufacturing process. It will cause waste of materials and reduce costs at the same time. In addition, the material elasticity of the foam material has higher shock resistance, which can further improve the shock resistance effect between the filter element frame and the core material. Finally, the foamed material passes through the filter element frame after being foamed, so that the foamed material can be firmly combined with the filter element frame, thereby preventing the displacement of the foamed material from affecting the sealing effect.

Description

Filter element and filter element assembly method

The invention relates to a filter element for separating suspended particles in a fluid and an assembly method of the filter element, especially a filter element for a truck and its related gluing method.

For example, in Taiwan No. I631984 Invention Announcement, the filter element in the prior art includes a core material and a filter element frame. The core material is used to filter fluid, and the fluid passes through both ends of the core material to make the dust in the fluid adhere to the core material. The filter element frame is sleeved on one end of the core material, and the gap between the filter element frame and the core material will be fixed and closed through colloidal bonding. In addition, a sealing ring is further provided on the filter element and is sleeved outside the filter element frame. When the filter element is installed in the casing to form a filter, the sealing ring is used to close the gap between the filter element frame and the casing.

However, prior art filter elements have the following disadvantages:

First, it is necessary to close the two gaps through two different components, the colloid and the sealing ring. The gap between the filter element frame and the core material is closed, and the sealing ring is used to close the gap between the filter element frame and the outer shell. The two are different components and need to be assembled It is done separately, so the assembly process is cumbersome and cannot be speeded up.

Second, in order to solve the time-consuming and labor-intensive shortcomings of using a glue gun to insert glue between the core material and the filter element frame in the past, the aforementioned patent case adopts the method of first applying a large amount of glue, and then letting the filter element frame cut the glue to apply the glue , but in this way, a large amount of excess colloid will be produced, and the excess colloid is actually difficult to recycle because it has been in contact with the outside air. Therefore, the gluing method of the aforementioned patent case will waste a large amount of colloid, and also cause an increase in cost.

Third, although the colloid can adhere to the filter element frame and core material, the anti-vibration ability of the colloid is not ideal, especially when the filter element is installed in a vehicle, it will be in a situation of vibration for a long time.

Fourth, the sealing ring is simply set on the ring groove of the filter element frame instead of being fixed on the filter element frame, so when the filter element is installed into the casing, the sealing ring may be displaced relative to the filter element frame due to extrusion, and then Affect the sealing effect.

Therefore, the filter element of the prior art really needs to be improved.

In view of the above-mentioned shortcomings and deficiencies of the prior art, this creation provides a filter element and an assembly method of the filter element, which combines the colloid and the sealing ring of the prior art into one, which can simplify the manufacturing process and strengthen the shock resistance and fixation.

In order to achieve the above creative purpose, the technical means used in this creation is to design a filter element, which includes: a core material; a filter element frame, which is sleeved on the core material; Foaming holes are arranged at intervals; a foaming body, the position of the foaming body corresponds to the position of the filter element frame, the foaming body passes through the foaming holes of the filter element frame after foaming and then connects to the core material, And fix the filter core frame and the core material; the foam body is used to lean against a shell to close the gap between the filter core and the shell.

In order to achieve the above creation purpose, this creation further provides a filter element assembly method, which includes the following steps: injecting unfoamed foam material into a mold, and putting a filter element frame and a core material into the mold; Make the foaming material foam, the foaming material passes through the filter core frame after foaming and connects the core material, and fixes the filter core frame and the core material; the foaming material, the filter core frame and the core after foaming The materials together form a filter element; the foamed material is used to lean against a shell to close the gap between the filter element and the shell; the filter element is taken out from the mold.

The advantage of this creation is that, by using the characteristic that the foaming material will expand after foaming, the foaming material will pass through the filter core frame and connect to the core material after foaming, so that the filter core frame and core material can be fixed, replacing the existing technology. The following function of colloid; Simultaneously, foam material has the function of sealing ring as prior art after foaming and can be used to lean against shell and then close the gap between filter core and shell; Therefore this creation uses foam material (foam body ) to replace the colloid and sealing ring in the prior art, and only need one foam molding to have the functions of colloid and sealing ring at the same time, so the manufacturing process can be greatly simplified.

In addition, compared with the prior art that discards a large amount of excess colloids, the invention uses less materials and does not cause waste of materials, and can also reduce costs.

In addition, compared with the prior art that uses colloid to bond the filter element frame and core material, the material elasticity of the foam material in this creation has higher shock resistance, and can effectively improve the anti-seismic effect between the filter element frame and the core material.

Also, compared with the sealing ring in the prior art, which is simply sleeved on the filter element frame and is not stable, the foam material of the present invention passes through the filter element frame after foaming, so that the foam material can be firmly combined with the filter element frame, thereby avoiding The displacement of the foam material affects the sealing effect.

Finally, the core material is mostly formed by winding, so the outer diameter is prone to tolerance, but this creation is made through foaming and then the outer wall of the core material is bonded, so even if there is a tolerance in the size of the core material, the size of the foam material Foaming is also effective in absorbing tolerances, so that the core material is firmly bonded to the filter frame.

Further, the above-mentioned filter element, wherein the filter element frame includes a hole portion and an interposition portion; the foaming holes are located on the hole portion; the interposition portion protrudes radially outward from the hole portion, and Extending towards one end of the core material; the foam body extends into between the hole and the interposition part after being foamed, and then between the hole and the interposition part.

Further, the filter element, wherein the filter element frame surrounds and protrudes a support portion; the foam body is foamed and then attached to the support portion in a direction away from the end of the core material.

Further, the filter element, wherein the foam extends between the inner wall surface of the filter element frame and the outer wall surface of the core material after foaming.

Further, the filter element, wherein the foam body and the filter element frame are located at one end of the core material, and one end surface of the foam body, one end surface of the filter element frame and the end surface of the end surface of the core material are cut together.

Further, the filter element, wherein the foam is polyurethane.

The filter element assembly method, wherein the filter element frame is formed with a plurality of foam holes, and the foam holes are arranged at intervals around; the foam material passes through the foam holes after foaming and is connected to the core material.

Further, the filter element assembly method, wherein the filter element frame includes a hole portion and an interposition portion; the foaming holes are located on the hole portion; the interposition portion protrudes radially outward from the hole portion ; After the filter element frame is put into the mold, the clamping part faces the unfoamed foam material, and the foam material extends upwards between the hole part and the clamping part after foaming, and then in The hole portion and the interposed portion.

Further, in the method for assembling the filter element, wherein the filter element frame surrounds and protrudes a support portion; after the filter element frame is put into the mold, the support portion is located above the foam material that has not yet been foamed, and the foam material After foaming, the foam material is upwardly connected to the supporting part.

Furthermore, in the above filter element assembly method, after the foaming material is foamed, the foaming material extends between the inner wall surface of the filter element frame and the outer wall surface of the core material.

Further, the filter element assembly method, wherein the filter element frame is located at the bottom of the core material, and the mold makes the bottom surface of the foamed material after foaming, the bottom surface of the filter element frame and the bottom surface of the core material Qie Qi.

Further, in the method for assembling the filter element, after the filter element frame and the core material are put into the mold, the filter element frame is pressed down with a fixing jig, and then the foaming material is foamed; the foaming After the material is foamed, the fixing jig is removed first, and then the filter element is removed from the mold.

10: core material

20:Filter frame

21: hole department

211: foam hole

22: Outer Ring Department

23: Inner ring department

24: Intersection department

25: support part

30: Foam

31: foam material

40:Mold

41: against the groove

42: Foam tank

50: Fixed fixture

51: Platen

52: Fixed seat

521: screw

Fig. 1 and Fig. 2 are three-dimensional appearance diagrams of the filter element of this creation.

Fig. 3 and Fig. 4 are the component exploded views of the filter element of this creation.

Fig. 5 is the three-dimensional appearance diagram of the mold and fixed jig of this creation.

Fig. 6 is the three-dimensional sectional view of the foaming material and the mould.

Figure 7 to Figure 9 are action diagrams of the assembly method of this creation.

Fig. 10 is the enlarged sectional view of the filter core of this creation.

The technical means adopted by this creation to achieve the predetermined creation purpose are further described below in conjunction with the drawings and the preferred embodiments of this creation.

Please refer to FIGS. 1 to 3 , the filter element of the present invention includes a core material 10 , a filter element frame 20 and a foam body 30 .

The aforementioned core material 10 can be circular or track-shaped, and its specific shape is not limited.

The aforementioned filter element frame 20 is sheathed on the core material 10 .

Please refer to Fig. 1, Fig. 2 and Fig. 10, the position of the aforementioned foam body 30 corresponds to the position of the filter element frame 20, and the foam body 30 passes through the filter element frame 20 after foaming and connects the core material 10, and fixes the filter element The frame 20 and the core material 10 , preferably, the foam body 30 surrounds the core material 10 along the shape of the filter element frame 20 after foaming. Foam 30 is used to lean against a housing to close the gap between the filter element and the housing. The foam body 30 is preferably polyurethane, but not limited thereto.

In this embodiment, please refer to Fig. 3, Fig. 4 and Fig. 10, the filter element frame 20 is formed with a plurality of foam holes 211, and these foam holes 211 are arranged at intervals, and the foam body 30 is passed through after foaming. The foam holes 211 are connected to the core material 10 . Preferably, the foaming holes 211 are square holes, but the foaming holes 211 are not limited to square holes or round holes, and can also be long slits and the like.

Further, the filter frame 20 includes a hole portion 21 , an outer ring portion 22 , an inner ring portion 23 , an interposing portion 24 and a supporting portion 25 . The aforementioned foam holes 211 are located on the hole portion 21 . The outer ring portion 22 and the inner ring portion 23 are respectively located at two ends of the hole portion 21 , wherein the outer ring portion 22 is closer to one end of the core material 10 than the inner ring portion 23 . In this embodiment, the foam body 30 extends between the inner wall surface of the filter element frame 20 and the outer wall surface of the core material 10 after foaming. Preferably, the foam body 30 extends into the outer ring part 22 and the core material 10 at the same time. and between the inner ring portion 23 and the core material 10, but may also only extend into between the outer ring portion 22 and the inner ring portion 23 and between one of the core material 10, or neither extend into the outer ring portion 22 and the core material 10. The space between the inner ring part 23 and the core material 10 is also possible, and in this case, it only extends between the inner wall surface of the hole part 21 (the part other than the foaming hole 211 ) and the outer wall surface of the core material 10 . In addition, in this embodiment, the inner diameter of the inner ring portion 23 is larger than the inner diameter of the outer ring portion 22 , so as to facilitate the formation of the foaming holes 211 during the manufacture of the filter element frame 20 , but the present invention is not limited thereto.

The interposition part 24 protrudes radially outward from the hole part 21 and extends towards one end of the core material 10. After foaming, the foam body 30 extends into the space between the hole part 21 and the interposition part 24, and then connects to the hole part. 21 (the part other than the foam hole 211 ) and the interposed part 24 , the foam 30 can be interposed by the hole part 21 and the interposed part 24 to strengthen the combination of the foam 30 and the filter element frame 20 . In this embodiment, the interposition portion 24 extends radially outward and obliquely towards one end of the core material 10, but it is not limited thereto, and may also extend radially outward first and then turn towards one end of the core material Extended (similar to L shape).

The support part 25 surrounds the end protruding from the interposition part 24, and the foam body 30 is connected to the support part 25 in a direction away from the end of the core material 10 after foaming. In other words, the support part 25 can face one end of the core material 10 The foam body 30 is supported in the direction.

In this embodiment, the foam body 30 and the filter element frame 20 are located at one end of the core material 10, and one end surface of the foam body 30, one end surface of the filter element frame 20 and the end surface of the end surface of the core material 10 are aligned (as shown in Fig. 10), but not limited thereto, the foam body 30 and the filter element frame 20 can also be located in other positions, such as the middle section of the core material 10 and so on.

The assembly method of the filter element of the present invention comprises the following steps: Please refer to Fig. 5 to Fig. 7, at first, in a mold 40, inject foam material 31 that has not yet been foamed, and a filter element frame 20 and a core material 10 into the mold 40. Preferably, the mold 40 has an abutting groove 41 and a foaming groove 42, the foaming groove 42 surrounds the abutting groove 41, and is spaced apart from the abutting groove 41, the bottom end of the filter element frame 20 and the core material 10 Placed against the groove 41 , the foaming material 31 is injected into the foaming groove 42 . The structure of the filter element frame 20 is preferably the same as described above, so it will not be repeated here.

Please refer to FIG. 8, in this embodiment, after the filter element frame 20 and the core material 10 are put into the mold 40, a fixing jig 50 is used to press down the filter element frame 20; preferably, the fixing jig 50 includes a pressing plate 51 And the plurality of fixing seats 52 , after the pressing plate 51 surrounds and presses the filter element frame 20 underground, the screw rod 521 of the fixing seat 52 abuts against the pressing plate 51 downwards.

Please refer to Fig. 9 and shown in Fig. 10, then make foaming material 31 foamed into foam body 30, after foaming material 31 foams, pass filter core frame 20 (foam hole 211) and connect core material 10, and The filter element frame 20 and the core material 10 are fixed; the foamed foam material 31 (foam body 30 ), the filter element frame 20 and the core material 10 together form a filter element. By pressing down the fixing jig 50 , the position of the filter element frame 20 can be stabilized to ensure the foamed shape of the foam material 31 .

7 and 10, in this embodiment, after the filter element frame 20 is put into the mold 40, the sandwiched part 24 of the filter element frame 20 faces the foam material 31, and the support part 25 is located on the foam material 31. on On the other hand, after foaming, the foam material 31 extends upwards between the hole portion 21 and the interposition portion 24 and then connects to the hole portion 21 and the interposition portion 24, and connects upward to the support portion 25. In addition, after the foam material 31 is foamed, It extends between the inner wall surface of the filter element frame 20 and the outer wall surface of the core material 10 .

Please refer to Fig. 9 and shown in Fig. 10, in the present embodiment, the groove bottom of mold 40 against groove 41 and the groove bottom of foam groove 42 are aligned, so after foaming, foam material 31 (foam body) 30), the bottom surface of the filter core frame 20 and the bottom surface of the core material 10 are aligned. But not limited thereto, the groove bottom against the groove 41 can also be lower than the groove bottom of the foaming groove 42, and the filter element frame 20 is supported elsewhere, so that the foam material 31 can fix the filter element frame 20 on the other than the bottom end of the core material 10.

In this embodiment, the foam material 31 (foam body 30) is used to abut against the shell in the axial direction, but it is not limited thereto. The foam material 31 (foam body 30) can also be used to abut radially in the shell. In addition, regardless of whether the foam material 31 (foam body 30) is against the shell axially or radially, the foam material 31 (foam body 30) can protrude from the filter element frame 20, be aligned with a certain part of the filter element frame 20, Or not protruding from the filter element frame 20, depending on the shape of the shell, it only needs to be against the shell after foaming to achieve the sealing effect.

Finally, after the foaming material 31 is foamed, the fixing jig 50 is removed first, and then the filter element (the foam body 30 , the filter element frame 20 and the core material 10 ) is taken out from the mold 40 , and the assembly of the filter element is completed at this point.

This creation uses the property that the foam material 31 will expand after foaming, so that the foam material 31 passes through the foam hole 211 of the filter core frame 20 after foaming and then adheres to the core material 10, thereby fixing the filter core frame 20 and the core material. 10. At the same time, it can also lean against the shell to close the gap between the filter element and the shell, and it only needs one foam molding to have the above two functions at the same time, so the manufacturing process can be greatly simplified, and there will be no waste of materials in the manufacturing process , can also reduce costs.

In addition, the material elasticity of the foam material 31 (polyurethane) has higher shock resistance, which can effectively improve the shock resistance between the filter element frame 20 and the core material 10 .

Finally, the foaming material 31 passes through the filter frame 20 (foaming holes 211 ) after foaming, so that the foaming material 31 can be firmly combined with the filter frame 20 , thereby avoiding the displacement of the foaming material 31 and affecting the sealing effect.

The above description is only a preferred embodiment of this creation, and does not impose any formal restrictions on this creation. Although this creation has been disclosed as above with a preferred embodiment, it is not used to limit this creation. Anyone in the technical field has Ordinary knowledgeable persons, without departing from the scope of this creative technical solution, may use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes. However, any content that does not deviate from this creative technical solution, according to The technical essence of the creation Any simple modification, equivalent change and modification made to the above embodiments still belong to the scope of the technical solution of the creation.

10: core material

20:Filter frame

22: Outer Ring Department

23: Inner ring department

25: support part

30: Foam

Claims (13)

A filter element, including a core material; a filter element frame, which is sleeved on the core material; the filter element frame is formed with a plurality of foam holes, and the foam holes are arranged at intervals; a foam body, the position of the foam body Corresponding to the position of the filter element frame, the foam passes through the foam holes of the filter element frame after foaming and then connects the core material, and fixes the filter element frame and the core material; on a housing to close the gap between the filter element and the housing. The filter element as described in claim 1, wherein the filter element frame includes a hole portion and an interposition portion; the foam holes are located on the hole portion; the interposition portion protrudes radially outward from the hole portion, and faces The direction of one end of the core material extends; after foaming, the foam body extends into between the hole portion and the interposition portion, and then connects to the hole portion and the interposition portion. The filter element according to claim 1 or 2, wherein a supporting portion protrudes from the filter element frame; the foam body is attached to the supporting portion in a direction away from the end of the core material after foaming. The filter element according to claim 1 or 2, wherein the foam extends between the inner wall of the filter frame and the outer wall of the core material after foaming. The filter element as described in claim 1 or 2, wherein the foam body and the filter element frame are located at one end of the core material, and one end surface of the foam body, one end surface of the filter element frame and the end surface of the core material Align the ends. The filter element according to claim 1 or 2, wherein the foam is polyurethane. A method for assembling a filter element, comprising the following steps: injecting unfoamed foam material into a mold, and putting a filter element frame and a core material into the mold; Make the foaming material foam, the foaming material passes through the filter core frame after foaming and connects the core material, and fixes the filter core frame and the core material; the foaming material, the filter core frame and the core after foaming The materials together form a filter element; the foamed material is used to lean against a shell to close the gap between the filter element and the shell; the filter element is taken out from the mold. The assembly method of the filter element as described in claim item 7, wherein the filter element frame is formed with a plurality of foam holes, and the foam holes are arranged at intervals; the foam material passes through the foam holes after foaming and then connects the core material. The method for assembling the filter element according to claim 8, wherein the filter element frame includes a hole portion and an interposition portion; the foaming holes are located on the hole portion; the interposition portion protrudes radially outward from the hole portion ; After the filter element frame is put into the mold, the clamping part faces the unfoamed foam material, and the foam material extends upwards between the hole part and the clamping part after foaming, and then in The hole portion and the interposed portion. The method for assembling the filter element according to any one of claims 7 to 9, wherein the filter element frame surrounds and protrudes a supporting portion; after the filter element frame is put into the mold, the supporting portion is located on the unfoamed foam material above, and the foam material is foamed upwards and connected to the support portion. The method for assembling a filter element according to any one of claims 7 to 9, wherein after the foaming material is foamed, the foaming material extends between the inner wall of the filter frame and the outer wall of the core material. The method for assembling a filter element according to any one of claims 7 to 9, wherein the filter element frame is located at the bottom of the core material, and the mold makes the bottom surface of the foamed material after foaming and the bottom surface of the filter element frame Cut flush with the underside of the core. The method for assembling the filter element according to any one of claims 7 to 9, wherein after the filter element frame and the core material are put into the mold, a fixing jig is used to press down the filter element frame, and then the foam material Foaming: after the foaming material is foamed, the fixing jig is removed first, and then the filter element is taken out from the mold.

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