Primary filter capable of reducing fracture risk of bending area

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By adopting a combination of plane and patterned welded surfaces in the connecting part of the primary filter, and adding the central widened section and non-welded area, the support design is optimized, and the problem of breaking during the bending process of the primary filter is solved and the resistance is improved Bending ability and reduces the chance of breaking.

CN222363078UActive Publication Date: 2025-01-17NANJING RUIAN ELECTRIC CO LTD

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Patent Information

Application Number: CN202421373753.2
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-06-17
Publication Date: 2025-01-17
Estimated Expiration: 2034-06-17

AI Technical Summary

Technical Problem

The existing primary filters are prone to breaking the welding zone during bending, resulting in high scrap rate and uneven tensile pressure resistance.

Method used

By adopting a combination design of planar welded surface and pattern welded surface in the connection area of the primary filter part, the central widened section and non-welded area are added, and the design of the support is optimized to improve bending resistance and reduce the risk of fracture.

Benefits of technology

It effectively reduces the risk of fracture in the bending area, improves the bending resistance of the welding area, reduces the chance of fracture, and avoids the conduction of cracking through optimization of welding methods.

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Abstract

The utility model provides a primary filter capable of reducing the fracture risk of a bending area. The primary filter comprises a primary filter part, an oil inlet connector located on the front face of the primary filter part and a supporting part located on the back face of the primary filter part. The primary filtering piece comprises a filtering part and a connecting part which is positioned at the edge of the filtering part and is formed by welding to play a connecting role, the width of the connecting part is equal everywhere, the front surface of the connecting part is a plane welding surface, and the back surface of the connecting part is a patterned welding surface. According to the method, the front and back welding modes are exchanged, so that the single-side bending resistance of the welding area is improved, and breakage is avoided.

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Description

Technical Field

[0001] The present invention belongs to the technical field of filters, and in particular relates to a primary filter capable of reducing the risk of breakage in a bending area. Background Art

[0002] The fuel pump assembly of the car is equipped with a primary filter to filter impurities in the fuel. The primary filter consists of a primary filter element, an oil inlet connector molded on the front of the primary filter element, and a support element molded on the back of the primary filter element. When installing the primary filter, the middle of the primary filter element needs to be bent at a certain angle to complete the connection of the oil inlet connector. After installation, the head and tail of the primary filter element are not on the same plane, but at a certain angle.

[0003] The welding process of the primary filter in the prior art forms a patterned surface in the front welding area and a smooth surface in the back welding area. The welding surface has a relatively high hardness, and the smooth welding surface and the patterned welding surface have different tensile and compressive capacities. As a result, when the middle part of the primary filter is bent, the welding area in this part is easily broken, thereby increasing the chance of scrapping the primary filter. Summary of the invention

[0004] The object of the present invention is to provide a primary filter capable of reducing the risk of fracture in the bending area, improving the bending resistance of the welding area at the bending part, and reducing the probability of fracture.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a pre-filter capable of reducing the risk of breakage in a bending area, comprising a pre-filter element, an oil inlet connector located on the front side of the pre-filter element, and a support member located on the back side of the pre-filter element; the pre-filter element comprises a filter portion and a connecting portion located at the edge of the filter portion and formed by welding to serve as a connection, the width of the connecting portion being equal everywhere, the front side being a flat welding surface, and the back side being a patterned welding surface.

[0006] The present invention also provides a pre-filter capable of reducing the risk of fracture in a bent area, comprising a pre-filter element, an oil inlet connector located on the front side of the pre-filter element, and a support element located on the back side of the pre-filter element; the pre-filter element comprises a filter portion and a connecting portion located at the edge of the filter portion and formed by welding to play a connecting role, the connecting portion comprises a widened section located at the middle edge of the pre-filter element and an equal-width section located at the edge of the remaining part of the pre-filter element; the length of the widened section is greater than the length of the bent area of the connecting portion;

[0007] The front side of the connecting portion is a planar welding surface, and the back side thereof located in the widened section includes an outer welding area and an inner welding area, the inner welding area is a patterned welding surface, the outer welding area is a smooth welding surface, and the portion located in the equal width section is a patterned welding surface, the inner patterned welding surface is integrally welded with the patterned welding surface, and the width of the inner patterned welding surface is smaller than the width of the patterned welding surface.

[0008] Furthermore, the width of the inner pattern welding surface is equal everywhere.

[0009] The present invention also provides a pre-filter capable of reducing the risk of fracture in a bent area, comprising a pre-filter element, an oil inlet connector located on the front side of the pre-filter element, and a support element located on the back side of the pre-filter element; the pre-filter element comprises a filter portion and a connecting portion located at the edge of the filter portion and formed by welding to play a connecting role, the connecting portion comprises a widened section located at the middle edge of the pre-filter element and an equal-width section located at the edge of the remaining part of the pre-filter element; the length of the widened section is greater than the length of the bent area of the connecting portion;

[0010] The widened section has an outer welding area, an inner welding area and a non-welding area separating the two; the outer welding area and the inner welding area are integrally welded with the welding area of the equal-width section; the welding area on the front side of the connecting part is a smooth welding surface, and the welding area on the back side is a patterned welding surface.

[0011] Furthermore, the widths of the outer welding area and the inner welding area are equal everywhere, and are both 1 / 2 of the width of the equal-width section.

[0012] Furthermore, the support member includes a head support body supporting the head of the primary filter element, a middle support body supporting the middle of the primary filter element, and a tail support body supporting the tail of the primary filter element; the middle support body is formed into an easy-to-fold portion through material reduction processing.

[0013] Furthermore, the easy-to-break portion is provided with saw teeth.

[0014] Furthermore, the thickness of the easy-to-break portion is smaller than the thickness of the remaining portion.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) The present invention improves the unilateral bending resistance of the welding area by exchanging the welding methods of the front and back sides, thereby avoiding the occurrence of fracture.

[0017] 2) The present invention improves the bending resistance by widening the middle part and increasing the smooth surface area.

[0018] 3) The present invention prevents the cracking phenomenon from being transmitted inward by widening the middle part and increasing the non-welding area, thereby reducing the probability of fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the structure of the first embodiment of the present invention (the dotted line portion in the figure is the bending area);

[0020] Figure 2This is a rear view of the structure of the first embodiment of the present invention (the dotted line portion in the figure is the bending area);

[0021] Figure 3 It is a right side view of the structure of the first embodiment of the present invention (the arrow in the figure indicates the bending direction, and the dotted line part indicates the schematic diagram after bending);

[0022] Figure 4 It is a right side view of the structure of an alternative example of the easy-to-bend section in the first embodiment of the present invention (the arrow in the figure indicates the bending direction, and the dotted line part indicates the schematic diagram after bending);

[0023] Figure 5 This is a front view of the structure of the second embodiment of the present invention (the dotted line portion in the figure is the bending area);

[0024] Figure 6 This is a rear view of the structure of the second embodiment of the present invention (the dotted line portion in the figure is the bending area);

[0025] Figure 7 It is a structural stereogram of the second embodiment of the present invention;

[0026] Figure 8 This is a front view of the structure of the third embodiment of the present invention (the dotted line portion in the figure is the bending area);

[0027] Fig. 9 This is a rear view of the structure of the third embodiment of the present invention (the dotted line portion in the figure is the bending area);

[0028] Fig.10 It is a structural stereogram of embodiment 3 of the present invention.

[0029] Reference numerals: 1, primary filter element; 1.1, primary filter element head; 1.2, primary filter element middle; 1.3, primary filter element tail; 1.4 filter portion; 1.5, connecting portion; 1.5.1, widening section; 1.5.1.1, outer welding area; 1.5.1.2, inner welding area; 1.5.1.3, non-welding area; 1.5.2, equal width section;

[0030] 2. Supporting parts; 2.1. Head supporting body; 2.2. Middle supporting body; 2.2.1. Easy-to-fold part; 2.3. Tail supporting body. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1: Figure 1 and2 As shown, a primary filter capable of reducing the risk of fracture in a bending area includes a primary filter element 1, an oil inlet connector located on the front side of the primary filter element 1, and a support element 2 located on the back side of the primary filter element 1.

[0033] The primary filter element 1 is made by folding the filter mesh cloth in half, welding the front and back of the filter mesh cloth by a welding machine to form a flat bag structure, and finally cutting off the excess filter mesh cloth outside the welding area by a cutting machine. The welding head type of the welding machine determines the shape of the welding area, and then determines the shape of the primary filter element 1. The primary filter element 1 as a whole can be divided into a primary filter element head 1.1, a primary filter element head 1.2 and a primary filter element head 1.3 in terms of appearance. The primary filter element head 1.1 has the smallest width and is used to install the oil inlet connector. The primary filter element head 1.3 has the largest width and the longest length, and plays a filtering role. The width of the primary filter element head 1.2 is designed to transition from narrow to wide in sequence. During installation, this part needs to be bent at a certain angle. The support member 2 is arranged on the back of the primary filter element 1 by injection molding technology, which plays a supporting role and can limit the expansion of the primary filter element 1 during filtering.

[0034] The primary filter element 1 comprises a filter portion 1.4 and a connection portion 1.5 located at the edge of the filter portion 1.4 and formed by welding to play a connecting role. The connection portion 1.5 is formed by welding, so it only plays a connecting role. The width of the connection portion 1.5 is equal everywhere, the front side is a flat welding surface, and the back side is a patterned welding surface. Figure 3 As shown, during installation, the back of the primary filter head 1.1 is subjected to force and bends forward. Since the front of the connecting portion 1.5 is a flat welding surface and the back is a patterned welding surface, during the bending process, the flat welding surface is compressed and the patterned welding surface is pulled, so the bending part of the connecting portion 1.5 is not easy to break.

[0035] As a preferred example, the support member 2 includes a head support body 2.1 supporting the primary filter head 1.1, a middle support body 2.2 supporting the primary filter head 1.2, and a tail support body 2.3 supporting the primary filter head 1.3. In the prior art, the support member 2 is a split structure, one part is installed on the primary filter head 1.1, and the other part is installed on the primary filter head 1.3, providing support for the two parts respectively. This structure will cause the primary filter head 1.2 to be torn when the primary filter head 1.3 is pulled, because the primary filter head 1.1 and the primary filter head 1.3 are only connected by the primary filter head 1.2 when the primary filter 1 is disassembled. Therefore, in this example, the support body is designed as an integrated body to support the entire primary filter 1, so that when the primary filter head 1.3 is pulled, the pulling force will not act on the primary filter head 1.2, thereby avoiding tearing.

[0036] In order to cooperate with the overall bending of the primary filter element 1, the middle support body 2.2 is processed by material reduction to form an easy-to-bend portion 2.2.1. The easy-to-bend portion 2.2.1 is easier to bend and still retains the connection function. As a preferred example, the thickness D1 of the easy-to-bend portion 2.2.1 is less than the thickness D2 of the remaining parts. As a preferred example, D1=D2 / 2.

[0037] As an alternative, Figure 4 As shown, the easy-to-break portion 2.2.1 is provided with serrations.

[0038] Embodiment 2: as Figures 5 to 7 As shown, the difference between this embodiment and the first embodiment is that the connecting portion 1.5 includes a widened section 1.5.1 located at the edge of the primary filter element head 1.2 and an equal-width section 1.5.2 located at the edge of the remaining portion of the primary filter element 1; the length of the widened section 1.5.1 is greater than the length of the bending area of the connecting portion 1.5.

[0039] The front side of the connection portion 1.5 is a flat welding surface, and the back side thereof located in the widened section 1.5.1 includes an outer welding area 1.5.1.1 and an inner welding area 1.5.1.2, wherein the inner welding area 1.5.1.2 is a patterned welding surface, and the outer welding area 1.5.1.1 is a smooth welding surface. The portion located in the equal width section 1.5.2 is a patterned welding surface, and the inner patterned welding surface is integrally welded with the patterned welding surface, and the width of the inner patterned welding surface is smaller than the width of the patterned welding surface. The outer welding area 1.5.1.1 on the back side of the widened section 1.5.1 and its front side are both smooth welding surfaces, and therefore have the same tensile and compressive resistance, and this portion is not prone to breakage when bent. Since the inner welding area 1.5.1.2 on the back side of the widened section 1.5.1 adopts a patterned welding surface, the connection strength of this portion can be improved.

[0040] As a preferred example, the width of the inner pattern welding surface is equal everywhere.

[0041] Embodiment three: as Figures 8 to 10 As shown, the difference between this embodiment and the first embodiment is that the connecting portion 1.5 includes a widened section 1.5.1 located at the edge of the primary filter element head 1.2 and an equal-width section 1.5.2 located at the edge of the remaining portion of the primary filter element 1; the length of the widened section 1.5.1 is greater than the length of the bending area of the connecting portion 1.5.

[0042] The widened section 1.5.1 has an outer welding area 1.5.1.1, an inner welding area 1.5.1.2 and a non-welding area 1.5.1.3 separating the two; the outer welding area 1.5.1.1 and the inner welding area 1.5.1.2 are welded together with the welding area of the equal width section 1.5.2. The welding area on the front side of the connecting portion 1.5 is a smooth welding surface, and the welding area on the back side is a patterned welding surface. Since the non-welding area 1.5.1.3 has not been welded, it still has the softness of the filter cloth, so it can increase the foldability of this part, while the outer welding area 1.5.1.1 and the inner welding area 1.5.1.2 ensure the connection strength and the anti-fracture ability when bending. Since the fracture occurs at the edge, once the outer welding area 1.5.1.1 is fractured, since the non-welding area 1.5.1.3 itself is not easy to fracture, it will prevent the fracture from extending to the inner welding area 1.5.1.2.

[0043] As a preferred example, the widths of the outer welding area 1.5.1.1 and the inner welding area 1.5.1.2 are equal everywhere, and are both 1 / 2 of the width of the equal-width section 1.5.2.

[0044] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0045] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A primary filter capable of reducing the risk of fracture in a bending area, comprising a primary filter element, an oil inlet connector located on the front side of the primary filter element, and a support member located on the back side of the primary filter element; the primary filter element comprises a filter portion and a connecting portion located at the edge of the filter portion and formed by welding to play a connecting role, characterized in that: The width of the connection part is equal everywhere, the front side is a plane welding surface, and the back side is a pattern welding surface.

2. A primary filter capable of reducing the risk of fracture in a bending area, comprising a primary filter element, an oil inlet connector located on the front side of the primary filter element, and a support member located on the back side of the primary filter element; the primary filter element comprises a filter portion and a connecting portion located at the edge of the filter portion and formed by welding to play a connecting role, characterized in that: The connecting portion includes a widened section located at the middle edge of the primary filter element and an equal-width section located at the edge of the remaining portion of the primary filter element; the length of the widened section is greater than the length of the bending area of the connecting portion; The front side of the connecting portion is a planar welding surface, and the back side thereof located in the widened section includes an outer welding area and an inner welding area, the inner welding area is a patterned welding surface, the outer welding area is a smooth welding surface, and the portion located in the equal width section is a patterned welding surface, the inner patterned welding surface is integrally welded with the patterned welding surface, and the width of the inner patterned welding surface is smaller than the width of the patterned welding surface.

3. A pre-filter capable of reducing the risk of fracture in the bending area according to claim 2, characterized in that: The width of the inner pattern welding surface is equal everywhere.

4. A primary filter capable of reducing the risk of fracture in a bent area, comprising a primary filter element, an oil inlet connector located on the front side of the primary filter element, and a support member located on the back side of the primary filter element; the primary filter element comprises a filter portion and a connecting portion located at the edge of the filter portion and formed by welding to play a connecting role, characterized in that: The connecting portion includes a widened section located at the middle edge of the primary filter element and an equal-width section located at the edge of the remaining portion of the primary filter element; the length of the widened section is greater than the length of the bending area of the connecting portion; The widened section has an outer welding area, an inner welding area and a non-welding area separating the two; the outer welding area and the inner welding area are integrally welded with the welding area of the equal-width section; the welding area on the front side of the connecting part is a smooth welding surface, and the welding area on the back side is a patterned welding surface.

5. A pre-filter capable of reducing the risk of fracture in the bending area according to claim 4, characterized in that: The widths of the outer welding area and the inner welding area are equal everywhere, and are both 1 / 2 of the width of the equal-width section.

6. A pre-filter capable of reducing the risk of fracture in the bending area according to any one of claims 1, 2 and 4, characterized in that: The support member includes a head support body supporting the head of the primary filter element, a middle support body supporting the middle of the primary filter element, and a tail support body supporting the tail of the primary filter element; the middle support body is processed by material reduction to form an easy-to-fold portion.

7. A pre-filter capable of reducing the risk of fracture in the bending area according to claim 6, characterized in that: The easy-to-break portion is provided with saw teeth.

8. A pre-filter capable of reducing the risk of fracture in the bending area according to claim 6, characterized in that: The thickness of the easy-to-break portion is smaller than that of the remaining portion.