Dust cup filter piece sealing structure and dust collector

Abstract

The utility model relates to a dust cup filter sealing structure, and relates to the technical field of dust collectors. The dust cup filtering part comprises a filter and a filter screen, the filter is arranged outside the filter screen in a sleeving mode, the filter and the filter screen abut against a shell of the dust collector, an opening of the filter screen is communicated with an air outlet of the dust collector, and a sealing ring is integrally formed at one end of the opening of the filter screen through secondary injection molding. The sealing ring comprises a connecting part and a bending part, the connecting part is integrally connected to one end of the opening of the filter screen, one end of the filter is pressed on the connecting part, the circumferential direction of the connecting part extends outwards to form the bending part, and the bending part abuts against the joint of the filter screen and the shell of the dust collector. The sealing ring is integrally formed on the filter screen and has a better sealing effect.

Description

Technical Field

[0001] This application relates to the field of vacuum cleaner technology, and in particular to a dust cup filter sealing structure and a vacuum cleaner. Background Technology

[0002] Vacuum cleaners, a common household cleaning appliance, are mainly used to remove dust from floors, carpets, clothing, and other items. Handheld vacuum cleaners are widely used due to their small size and ease of carrying and use.

[0003] Handheld vacuum cleaners mainly consist of a body with a handle, a dust cup assembly, a motor, and an exhaust filter. The dust cup assembly separates dust from the air and typically includes a filter and a HEPA filter installed inside the filter. Common filters include cyclone filters. The HEPA filter is a cylindrical shape with one end sealed and the other open. The opening of the HEPA filter connects to the motor and the exhaust port. The filter performs primary filtration of large particles and dust, followed by secondary filtration through the HEPA filter to remove any remaining dust that is not separated and prevents it from being released back into the air. During secondary filtration, dust is trapped on the sides of the HEPA filter, and air is exhausted through the opening in the HEPA filter.

[0004] To prevent dust particles from entering the motor and fan and corroding components, a sealing ring is installed at the connection between the HEPA filter and the motor and air outlet. These sealing rings are mostly made of EVA foam and need to be installed on the HEPA filter using a snap-fit ​​and adhesive method. Therefore, it is easy for them to be missing. Because the sealing rings are lightweight, missing ones are difficult to detect during later quality inspection and weighing. Furthermore, the sealing rings may not be installed evenly, and the material properties of EVA result in insufficient resilience under continuous pressure, leading to poor sealing performance. Utility Model Content

[0005] To address the issue of poor sealing performance of the sealing ring in HEPA filters, this application provides a dust cup filter sealing structure and a vacuum cleaner.

[0006] The sealing structure of the dust cup filter element provided in this application adopts the following technical solution:

[0007] A dust cup filter sealing structure includes a filter and a filter screen. The filter is sleeved outside the filter screen, and the filter and filter screen abut against the housing of a vacuum cleaner. The opening of the filter screen is connected to the air outlet of the vacuum cleaner. A sealing ring is integrally formed at one end of the opening of the filter screen by secondary injection molding. The sealing ring includes a connecting part and a bending part. The connecting part is integrally connected to one end of the opening of the filter screen. One end of the filter screen is pressed onto the connecting part. The connecting part extends outward in a circumferential direction to form the bending part, and the bending part abuts against the connection between the filter screen and the housing of the vacuum cleaner.

[0008] By adopting the above technical solution, the sealing ring is integrally molded at one end of the filter screen opening through secondary injection molding. The sealing ring and the filter screen are integrated and do not require secondary assembly. When one end of the filter is pressed onto the connecting part, the bent part deforms under force. The elastic force of the bent part to return to its original shape ensures that the bent part always presses tightly against the connection between the filter screen and the vacuum cleaner housing. Therefore, the connection between the filter screen and the vacuum cleaner housing is well sealed.

[0009] Preferably, the filter screen includes a support member and a filter screen, one end of the filter screen is an open end, the support member is located at the open end, the support member is used to fix the filter screen relatively, the connecting part is integrally formed on the support member, and the support member is provided with ribs in the outer circumference, the ribs are used to engage with the filter screen.

[0010] Preferably, the connecting portion includes an integrally formed first connecting portion and a second connecting portion. The first connecting portion is integrally formed on the support member. The inner circumference of the first connecting portion extends away from the other end of the filter screen to form the second connecting portion. The second connecting portion extends outward in the circumferential direction to form the bending portion. The bending portion abuts against the connection between the filter screen and the housing of the vacuum cleaner.

[0011] Preferably, the support member is annular, and the outer and inner circumferential directions of the support member have protruding rings extending away from the opening end, and the end of the filter screen located at the opening end is fitted between the two protruding rings.

[0012] Preferably, the support member has an abutment ring on the side away from the convex ring, the second connecting part is formed on the outer periphery of the abutment ring, and the first connecting part includes a horizontal part and a vertical part. The vertical part is formed on the outer periphery of the convex ring in the outer circumferential direction of the support member, and the horizontal part is formed on the side of the support member away from the filter screen.

[0013] Preferably, the end furthest from the opening of the filter screen is the sealed end, and the sealed end is fitted with a sealing cap.

[0014] Preferably, the sealing cap includes an integrally connected snap-fit ​​portion and a sealing portion. The snap-fit ​​portion is annular, and the outer and inner circumferential directions of the snap-fit ​​portion have protruding rings extending towards the end near the opening of the filter screen. The sealing end is snapped between the two protruding rings, and the sealing portion is connected to the inner circumferential protruding ring of the snap-fit ​​portion.

[0015] Preferably, the filter is covered with a dust collection hood, one end of the filter has an air inlet filter hole, and a sealing strip is provided between the dust collection hood and the other end of the filter.

[0016] A vacuum cleaner includes a dust cup assembly and a body, the dust cup assembly including a dust cup filter and a dust collection cover, the dust cup filter having a dust cup filter sealing structure as described above.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] It has good sealing performance. The sealing ring and the filter screen are integrally molded and do not require secondary assembly. The connection between the sealing ring and the filter screen is tight. Under the compression of the filter, the bent part always presses against the connection between the filter screen and the vacuum cleaner housing, thus making the seal between the filter screen and the vacuum cleaner housing good.

[0019] Easy to install; there is no need to align the filter with the mounting slot when installing the filter screen. The filter can be directly connected to the filter screen at any position through the ribs, making it difficult for the filter to be installed incorrectly.

[0020] It has low manufacturing cost, good durability, even lower cost for secondary injection molding, better consistency in actual quality, and can be washed with water. Attached Figure Description

[0021] Figure 1 This is an exploded view of the dust cup filter element and the dust cup filter element sealing structure in the embodiments of this application.

[0022] Figure 2 This is a cross-sectional view of the dust cup filter element and the dust cup filter element sealing structure in the embodiments of this application.

[0023] Figure 3 This is a three-dimensional structural diagram of the filter screen in an embodiment of this application.

[0024] Figure 4 yes Figure 2 A magnified view of a portion of position A in the middle.

[0025] Figure 5 This is an exploded view of the filter screen in an embodiment of this application.

[0026] Figure 6 This is an exploded view of the filter screen from another perspective in an embodiment of this application.

[0027] Figure 7 This is a cross-sectional view of the dust cup assembly and the sealing structure of the dust cup filter element in the embodiments of this application.

[0028] Figure 8 This is a three-dimensional structural diagram of the vacuum cleaner according to an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Dust cup filter element; 2. Filter; 3. Filter screen; 21. Filter hole; 31. Cavity; 4. Sealing ring; 11. Housing; 41. Connecting part; 42. Bending part; 32. Open end; 33. Sealing end; 34. Sealing cover; 35. Filter screen; 36. Support element; 361. Rib; 411. First connecting part; 412. Second connecting part; 5. Deformation space; 362. Abutment ring; 413. Horizontal part; 414. Vertical part; 341. Snap-fit ​​part; 342. Sealing part; 6. Dust collection hood; 7. Sealing strip; 8. Dust cup assembly; 9. Body. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0031] This application discloses a sealing structure for a dust cup filter element. (Refer to...) Figure 1 and Figure 2 The dust cup filter element 1 includes a filter 2 and a filter screen 3. The filter 2 is fitted over the filter screen 3 and has filter holes 21. The filter 2 is used for primary filtration, capable of filtering large particulate matter and dust. One end of the filter screen 3 has an opening, and the other end is sealed. The side of the filter screen 3 is a HEPA mesh with filtration function. The filter screen 3 has a cavity 31 inside, which is connected to the air outlet of the vacuum cleaner through the opening of the filter screen 3. Air reaches the filter screen 3 through the filter holes 21 and undergoes secondary filtration through the side of the filter screen 3. The filtered air is discharged from the opening of the filter screen 3 through the air outlet of the vacuum cleaner. The sealing structure of the dust cup filter element includes a sealing ring 4, which is integrally formed at one end of the opening of the filter screen 3 by secondary injection molding. One end of the filter 2 presses onto the sealing ring 4, so that the sealing ring 4 abuts against the connection between the filter screen 3 and the vacuum cleaner housing 11, thereby sealing the connection between the filter screen 3 and the vacuum cleaner housing 11.

[0032] Reference Figure 1 and Figure 3 The filter screen 3 has an open end 32 and a sealed end 33. The sealing ring 4 is located at the open end 32. The sealed end 33 is equipped with a sealing cover 34. The sealing cover 34 seals the sealed end 33 so that air can only flow in from the side of the filter screen 3.

[0033] Reference Figure 2 and Figure 3The sealing ring 4 includes a connecting portion 41 and a bent portion 42. The connecting portion 41 is used to connect with the filter screen 3. The connecting portion 41 is integrally injection molded onto the open end 32. The connecting portion 41 extends outward in the circumferential direction to form the bent portion 42. The bent portion 42 is inclined outward towards the vacuum cleaner housing 11. The bent portion 42 is used to seal the connection between the filter screen 3 and the vacuum cleaner housing 11. One end of the filter 2 presses against the connecting portion 41, causing the bent portion 42 to deform under force. The elastic force of the bent portion 42 to return to its original shape ensures that the bent portion 42 always presses tightly against the connection between the filter screen 3 and the vacuum cleaner housing 11. The sealing ring 4 is preferably made of TPE material, which has better elasticity and durability, and can be washed.

[0034] The filter screen 3 includes a filter screen 35 and a support member 36. The filter screen 35 is located on the side of the filter screen 3, and air enters the cavity 31 after being filtered by the filter screen 35. The support member 36 is fixed to the open end 32. The support member 36 can be made of plastic. The plastic support member 36 can support the filter screen 35 to fix the shape of the filter screen 35, and keep the filter screen 3 relatively fixed through the support member 36. The setting of the support member 36 also facilitates the integral molding of the sealing ring 4 on the filter screen 3. Specifically, the connecting part 41 is integrally molded on the support member 36. Several ribs 361 are provided on the outer periphery of the support member 36. During installation, the ribs 361 can make the filter screen 3 and the filter 2 fit more firmly.

[0035] Reference Figure 2 and Figure 5 The connecting portion 41 includes an integrally formed first connecting portion 411 and a second connecting portion 412. The first connecting portion 411 is integrally formed on the support member 36. One end of the filter 2 is pressed against the outer periphery of the first connecting portion 411 upwards. The inner periphery of the first connecting portion 411 extends away from the sealing end 33 to form the second connecting portion 412. The second connecting portion 412 extends outwards in the circumferential direction to form a bent portion 42. A deformation space 5 is formed between the first connecting portion 411, the second connecting portion 412, and the bent portion 42. The deformation space 5 provides space for the bent portion 42 to deform under pressure. Thus, the function of the second connecting portion 412 is to prevent the first connecting portion 411 from directly contacting the bent portion 42, thereby forming the deformation space 5.

[0036] Reference Figure 3 and Figure 6 The support member 36 is annular, with an opening at its center, which communicates with the cavity 31. The support member 36 has protruding rings extending in the outer and inner circumferential directions away from the opening end 32. The filter screen 35, located at the end of the opening end 32, is fitted between the two protruding rings and is relatively fixed to the support member 36.

[0037] Reference Figure 2 and Figure 4The support member 36 has an abutment ring 362 on the side opposite to the convex ring. The second connecting part 412 is formed on the outer periphery of the abutment ring 362. The first connecting part 411 includes a horizontal part 413 and a vertical part 414. The outer periphery of the horizontal part 413 is connected to the vertical part 414, and the inner periphery of the horizontal part 413 is connected to the second connecting part 412. The horizontal part 413 is formed on the side of the support member 36 opposite to the filter screen 35, and the vertical part 414 is formed on the outer periphery of the convex ring on the outer periphery of the support member 36. The horizontal part 413, the second connecting part 412, and the bending part 42 form a deformation space 5. The abutment ring 362 increases the contact area between the connecting part 41 and the support member 36, and at the same time, it provides abutment at the turning point where the first connecting part 411 and the second connecting part 412 connect, thereby making the connecting part 41 more firmly formed on the support member 36.

[0038] Reference Figure 2 and Figure 5 The sealing cap 34 includes an integrally connected snap-fit ​​portion 341 and a sealing portion 342. The snap-fit ​​portion 341 is annular, and the outer and inner circumferential directions of the snap-fit ​​portion 341 have protruding rings extending close to the opening end 32. The sealing end 33 is snapped between the two protruding rings. The sealing portion 342 is used to seal the end of the filter screen 35 located at the sealing end 33. The sealing portion 342 is connected to the inner circumferential protruding ring of the snap-fit ​​portion 341.

[0039] Reference Figure 7 The filter 2 is covered with a dust collection cover 6. The filter hole 21 is located at one end of the filter 2. The filter 2 with filter hole 21 forms a channel for air intake between the filter 2 and the dust collection cover 6. The dust collection cover 6 abuts against the other end of the filter 2. A sealing strip 7 is provided between the dust collection cover 6 and the filter 2. The sealing strip 7 is used to prevent unfiltered air from entering the housing 11 of the vacuum cleaner.

[0040] The implementation principle of the dust cup filter sealing structure in this application embodiment is as follows: The sealing ring 4 is integrally molded onto the support member 36 through secondary injection molding, and the sealing ring 4 integrally set with the filter screen 3 has good sealing performance. The filter screen 35 is pressed onto the support member 36, the support member 36 is pressed onto the horizontal part 413, and one end of the filter 2 is pressed onto the vertical part 414. Under pressure, the bent part 42 is squeezed against the vacuum cleaner housing 11, the bent part 42 deforms and has a tendency to spring back towards the vacuum cleaner housing 11, so that the bent part 42 always presses against the vacuum cleaner housing 11, thereby achieving a seal at the connection between the filter screen 3 and the vacuum cleaner housing 11.

[0041] This application also discloses a vacuum cleaner, as shown in the embodiments below. Figure 7 and Figure 8The vacuum cleaner includes a dust cup assembly 8 and a body 9. The dust cup assembly 8 includes a dust cup filter element 1 and a dust collection hood 6. The dust cup filter element 1 is located inside the dust collection hood 6 and has the aforementioned dust cup filter element sealing structure. The dust cup filter element 1 includes a filter 2 and a filter screen 3. The filter 2 is fitted over the filter screen 3. One end of the filter screen 3 has an opening, and the other end of the filter screen 3 is sealed. One open end of the filter screen 3 presses against the vacuum cleaner housing 11 and is connected to the vacuum cleaner's air outlet. The dust cup filter element sealing structure includes a sealing ring 4. The sealing ring 4 is integrally formed at one open end of the filter screen 3 through secondary injection molding. One end of the filter 2 presses against the sealing ring 4. The elastic force of the sealing ring 4 after deformation under pressure causes the sealing ring 4 to press tightly against the connection between the filter screen 3 and the vacuum cleaner housing 11.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dust cup filter sealing structure, wherein the dust cup filter (1) includes a filter (2) and a filter screen (3), the filter (2) is sleeved outside the filter screen (3), the filter (2) and the filter screen (3) abut against the housing (11) of the vacuum cleaner, and the opening of the filter screen (3) is connected to the air outlet of the vacuum cleaner, characterized in that: One end of the opening of the filter screen (3) is integrally formed with a sealing ring (4) by secondary injection molding. The sealing ring (4) includes a connecting part (41) and a bending part (42). The connecting part (41) is integrally connected to one end of the opening of the filter screen (3). One end of the filter (2) is pressed onto the connecting part (41). The connecting part (41) extends outward in the circumferential direction to form the bending part (42). The bending part (42) abuts against the connection between the filter screen (3) and the housing (11) of the vacuum cleaner.

2. The sealing structure of the dust cup filter element according to claim 1, characterized in that: The filter screen (3) includes a support member (36) and a filter screen (35). One end of the filter screen (3) is an open end (32). The support member (36) is located at the open end (32). The support member (36) is used to fix the filter screen (35) relatively. The connecting part (41) is integrally formed on the support member (36). The support member (36) has ribs (361) on its outer periphery. The ribs (361) are used to engage with the filter (2).

3. The sealing structure of the dust cup filter element according to claim 2, characterized in that: The connecting part (41) includes an integrally formed first connecting part (411) and a second connecting part (412). The first connecting part (411) is integrally formed on the support member (36). The inner circumferential direction of the first connecting part (411) extends away from the other end of the filter screen (3) to form the second connecting part (412). The circumferential direction of the second connecting part (412) extends outward to form the bending part (42). The bending part (42) abuts against the connection between the filter screen (3) and the housing (11) of the vacuum cleaner.

4. The sealing structure of the dust cup filter element according to claim 3, characterized in that: The support member (36) is annular, and the outer and inner circumference of the support member (36) have protruding rings extending away from the opening end (32). The end of the filter screen (35) located at the opening end (32) is fitted between the two protruding rings.

5. The sealing structure of the dust cup filter element according to claim 4, characterized in that: The support member (36) has an abutment ring (362) on the side away from the convex ring. The second connecting part (412) is formed on the outer periphery of the abutment ring (362). The first connecting part (411) includes a horizontal part (413) and a vertical part (414). The vertical part (414) is formed on the outer periphery of the convex ring in the outer periphery of the support member (36). The horizontal part (413) is formed on the side of the support member (36) away from the filter screen (35).

6. The sealing structure of the dust cup filter element according to claim 1, characterized in that: The end away from the opening of the filter screen (3) is a sealed end (33), and a sealing cap (34) is installed on the sealed end (33).

7. The sealing structure of the dust cup filter element according to claim 6, characterized in that: The sealing cap (34) includes an integrally connected snap-fit ​​part (341) and a sealing part (342). The snap-fit ​​part (341) is annular. The outer and inner circumferential directions of the snap-fit ​​part (341) extend with protruding rings towards the end near the opening of the filter screen (3). The sealing end (33) is snapped between the two protruding rings. The sealing part (342) is connected to the inner circumferential protruding ring of the snap-fit ​​part (341).

8. The sealing structure of the dust cup filter element according to claim 7, characterized in that: The filter (2) is covered with a dust collection hood (6), one end of the filter (2) has an air inlet filter hole (21), and a sealing strip (7) is provided between the dust collection hood (6) and the other end of the filter (2).

9. A vacuum cleaner, comprising a dust cup assembly (8) and a body (9), said dust cup assembly (8) comprising a dust cup filter (1) and a dust collection hood (6), characterized in that: The dust cup filter element (1) has a dust cup filter element sealing structure as described in any one of claims 1-8.

Images