Oil filter installed in screwing-in mode

Abstract

The utility model provides a screw-in type installed oil filter which comprises a framework and a filter screen, the framework comprises an annular framework body and an installation thread arranged on the outer circle face of the framework body, and the edge of the filter screen is embedded into the bottom of the framework body. The filter screen is installed in an opponent piece through threads, so that the skeleton body can be thickened, meanwhile, the filter screen does not need to be pretreated, the edge of the filter screen is directly embedded into the bottom of the skeleton body through injection molding, and therefore the connecting strength of the filter screen and the skeleton body is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of filters, and particularly relates to an oil filter with a screw-in installation method. Background Art

[0002] As Figure 1 shown in a kind of automotive oil filter, which includes a plastic skeleton and a filter screen. The edge of the filter screen needs to be pre-bent to form a skirt structure, and the skirt structure is sleeved on the outer circular surface of the end of the plastic skeleton and integrally injection-molded, and then the whole is press-fitted into the installation hole of the mating part through a press-fitting process.

[0003] Since the filter screen itself is only connected to the end of the plastic skeleton by the skirt structure, it is easy to rotate axially after installation, resulting in a decrease in connection strength. In addition, since the filter screen needs to be pre-bent, the process steps are also increased. Summary of the Invention

[0004] The purpose of the present invention is to provide an oil filter with a screw-in installation method, which can improve the connection strength between the filter screen and the skeleton.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An oil filter with a screw-in installation method, which includes a skeleton and a filter screen. The skeleton includes an annular skeleton body and installation threads provided on the outer circular surface of the skeleton body, and the edge of the filter screen is embedded in the bottom of the skeleton body.

[0006] Further, the skeleton further includes a central column body provided at the center of the skeleton body and several connecting rib bodies connecting the central column body and the skeleton body; the corresponding part of the filter screen is embedded in the central column body and the connecting rib bodies.

[0007] Further, the distance between the top of the central column body and the top of the skeleton body is greater than the distance between the top of the connecting rib body and the top of the skeleton body.

[0008] Further, flow holes are provided at the positions of the filter screen corresponding to the central column body or the connecting rib bodies, and flow bodies integrally connected to the central column body or the connecting rib bodies are formed in the flow holes.

[0009] Further, flow holes are provided at the positions of the filter screen corresponding to both the central column body and the connecting rib bodies, and flow bodies integrally connected to the central column body and the connecting rib bodies are formed in the flow holes.

[0010] Further, several flow holes are provided at the positions of the filter screen corresponding to each connecting rib body.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The present invention is installed into the counterpart by means of threads, so that the skeleton body can be thickened. At the same time, the filter screen does not need pretreatment, and its edge is directly embedded into the bottom of the skeleton body through injection molding, thereby improving the connection strength between the two.

[0013] 2. The present invention additionally adds a runner hole during the cutting of the filter screen, so that the runner flows through the runner hole during injection molding and connects the two injection molded bodies on both sides after curing, thereby further improving the connection strength between the filter screen and the skeleton body without increasing the process steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a structural cross-sectional view of an automotive oil filter in the prior art;

[0015] Figure 2 is a three-dimensional structure diagram of Embodiment 1 of the present invention;

[0016] Figure 3 is Figure 2 an exploded view of the structure of the embodiment shown;

[0017] Figure 4 is Figure 2 a top view of the structure of the embodiment shown;

[0018] Figure 5 is Figure 4 a structural cross-sectional view taken along the A-A direction in

[0019] Figure 6 is an exploded view of the structure of Embodiment 2 of the present invention;

[0020] Figure 7 is a cross-sectional view of the structure of Embodiment 2;

[0021] Figure 8 is an exploded view of the structure of Embodiment 3 of the present invention;

[0022] Figure 9 is a cross-sectional view of the structure of Embodiment 3;

[0023] Figure 10 is an exploded view of the structure of Embodiment 4 of the present invention;

[0024] Figure 11 is a cross-sectional view of the structure of Embodiment 4. DETAILED DESCRIPTION OF THE INVENTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Example 1: As Figures 2 to 5 shown, the present invention discloses a screw-in type oil filter, which includes a skeleton 1 and a filter screen 2. The skeleton 1 includes an annular skeleton body 1.1 and an installation thread 1.2 provided on the outer circumferential surface of the skeleton body 1.1. The edge of the filter screen 2 is embedded in the bottom of the skeleton body 1.1.

[0027] Since the skeleton 1 is installed in the installation hole of the counterpart through the installation thread 1.2, the skeleton body 1.1 can be thickened. In this way, during injection molding, the contact area between the skeleton body 1.1 and the filter screen 2 will increase, and the connection strength between the two will also be improved. Compared with the traditional press-fitting structure, the filter screen 2 is more firmly fixed. In addition, since the connection is formed by edge injection molding, no pre-treatment is required for the filter screen 2, and the filter screen 2 can be injection molded in a flat manner, optimizing the process steps and reducing the manufacturing cost and difficulty.

[0028] As a preferred example, the skeleton 1 further includes a central column 1.3 provided at the center of the skeleton body 1.1 and four connecting ribs 1.4 connecting the central column 1.3 and the skeleton body 1.1. The connecting ribs 1.4 are evenly distributed around the circumference of the central column 1.3, and the two are integrally connected to the skeleton body 1.1 through injection molding. The corresponding part of the filter screen 2 is embedded in the central column 1.3 and the connecting ribs 1.4. In this way, the contact area between the filter screen 2 and the skeleton 1 is increased, further improving the connection strength. At the same time, the connecting ribs 1.4 also play a supporting role, making the skeleton body 1.1 more reliably screwed into the counterpart.

[0029] As a preferred example, the distance L1 between the top of the central column 1.3 and the top of the skeleton body 1.1 is greater than the distance L2 between the top of the connecting rib 1.4 and the top of the skeleton body 1.1. In this way, the area above the top of the central column 1.3 can serve as a channel connecting the areas between the two connecting ribs, enabling the medium to converge and contributing to the normal filtration of the oil filter.

[0030] Example 2: As Figure 6 and 7 shown, the difference between this embodiment and the first embodiment is that in this embodiment, a first material flow hole 2.1 is provided at the position of the filter screen 2 corresponding to the central column 1.3. A first material flow body 1.5 integrally connected to the central column 1.3 is formed in the first material flow hole 2.1. During injection molding, although the filter screen 2 itself has permeability, due to the small mesh holes of the filter screen 2, most of the plastic particle flow is difficult to quickly pass through the mesh holes, resulting in poor connection between the plastic parts on both sides of the filter screen 2. Therefore, by providing a material flow hole on the filter screen 2, the rapid passage of the flow is achieved, so as to form a connection with the plastic parts on both sides. The material flow hole can be cut together during the cutting process of the filter screen 2, so no additional processing steps will be added.

[0031] Embodiment 3: As Figure 8 and 9 shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, second material flow holes 2.2 are provided at positions on the filter screen 2 corresponding to the connecting rib bodies 1.4. A second material flow body 1.6 integrally connected to the connecting rib body 1.4 is formed in the second material flow holes 2.2. As a preferred example, three second material flow holes 2.2 corresponding to each connecting rib body 1.4 are provided on the filter screen 2.

[0032] Embodiment 4: As Figure 10 and 11 shown, the difference between this embodiment and Embodiment 1 is that in this embodiment, first material flow holes 2.1 are provided at positions on the filter screen 2 corresponding to the central column body 1.3, and second material flow holes 2.2 are provided at positions corresponding to the connecting rib bodies 1.4. A first material flow body 1.5 integrally connected to the central column body 1.3 is formed in the first material flow holes 2.1, and a second material flow body 1.6 integrally connected to the connecting rib body 1.4 is formed in the second material flow holes 2.2. This way can enable both the central column body 1.3 and the connecting rib bodies 1.4 to be integrally connected through the material flow bodies, thereby further improving the overall strength.

[0033] It should be noted that the diameter of the first material flow hole 2.1 is smaller than the diameter of the central column body 1.3, and the diameter of the second material flow hole 2.2 is smaller than the thickness of the connecting rib body 1.4.

[0034] Those parts not detailed in the present invention are all well-known technologies to those skilled in the art.

[0035] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A screw-in oil filter, comprising a frame and a filter screen, characterized in that: The skeleton comprises an annular skeleton body and mounting threads arranged on the outer circumferential surface of the skeleton body, and the edge of the filter screen is embedded in the bottom of the skeleton body.

2. A screw-in oil filter according to claim 1, characterized in that: The skeleton also includes a central column arranged at the center of the skeleton body and a plurality of connecting ribs connecting the central column and the skeleton body; the corresponding part of the filter is embedded in the central column and the connecting ribs.

3. A screw-in oil filter according to claim 2, characterized in that: The distance between the top of the central column and the top of the frame body is greater than the distance between the top of the connecting rib and the top of the frame body.

4. A screw-in oil filter according to claim 2, characterized in that: A flow hole is provided on the filter screen at a position corresponding to the central column or the connecting rib, and a flow body integrally connected to the central column or the connecting rib is formed in the flow hole.

5. The screw-in oil filter according to claim 2, characterized in that: The filter screen is provided with flow holes at positions corresponding to the central column and the connecting ribs, and a flow body integrally connected with the central column and the connecting ribs is formed in the flow holes.

6. A screw-in oil filter according to claim 4 or 5, characterized in that: The filter screen is provided with a plurality of flow holes corresponding to each connecting reinforcement body.

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