An oil filter

Abstract

This utility model relates to an oil filter, including a filter housing, a filter cover, and a filter element. The filter housing has an installation cavity for installing the filter element. The filter cover is detachably connected to the filter housing. A fixing member is provided at the center of the filter. The fixing member includes a sleeve for a spring to be fitted. The sleeve has locking ears at both ends that engage with the spring gap, causing the spring to be limited and positioned within the installation cavity. One end of the spring abuts against the filter element, and the other end abuts against the inner wall of the filter cover. By limiting the spring through the locking ears, it can be ensured that the spring stably regulates the oil pressure, keeping the oil pressure stable and ensuring that the oil circulates normally in the engine and performs its lubricating effect.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to an oil filter. Background Technology

[0002] An oil filter is a filtration device installed in the engine lubrication system. It uses a metal mesh or filter paper to intercept impurities in the oil, ensuring a continuous supply of clean oil to key engine components, preventing wear and extending service life. Depending on its structure, it can be either replaceable or washable, and is a core wear component that ensures efficient engine operation.

[0003] Publication number CN105840266B discloses an oil filter assembly, including an oil filter housing, a filter cover, and a filter element. The filter element is disposed within a cavity formed by the oil filter housing and the filter cover. It also includes a collection structure for collecting iron impurities in the oil. This collection structure is located within the cavity and mounted on the filter cover. The oil filter assembly integrates this iron impurity collection structure, which collects iron impurities from the oil by using a magnet to attract them. This method efficiently collects iron impurities from the oil at a low cost, further ensuring the cleanliness of the oil. This technology lacks a limiting structure for the spring. Springs typically serve as shock absorbers and clamping structures between the filter element and the housing. In this technology, the spring acts as a limiter between the bypass valve and the magnet, while also functioning as a magnetic attractor. The absence of a limiting structure causes the bypass valve spring to wobble, preventing the bypass valve from functioning properly and opening or closing at the appropriate time, thus affecting the engine's normal lubrication. Furthermore, the spring's wobble during the shock absorber and clamping structure between the filter element and the housing can cause the filter element to shift or fail to fit tightly, resulting in reduced filtration efficiency. Therefore, this technology still has room for improvement. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an oil filter to address the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oil filter, comprising a filter housing, a filter cover, and a filter element. The filter housing has an installation cavity for installing the filter element, and the filter cover is detachably connected to the filter housing. The filter is characterized by a fixing member at its center, the fixing member including a sleeve for a spring, and locking ears at both ends of the sleeve that engage with the spring gap, causing the spring to be limited and positioned within the installation cavity. One end of the spring abuts against the filter element, and the other end abuts against the inner wall of the filter cover.

[0006] By employing the above technical solution, the spring is limited by the snap-fit ​​lug, ensuring stable regulation of the oil pressure. This maintains stable oil pressure, ensuring normal oil circulation and lubrication within the engine, and preventing accelerated wear of engine components due to unstable pressure. Furthermore, the stable spring setting ensures the filter element remains stable within the mounting cavity, always tightly fitted to the spring and the inner wall of the filter cover, maximizing its filtration function. This effectively removes impurities, gum, and moisture from the oil, delivering clean oil to all lubrication points in the engine, improving filtration efficiency, and reducing damage to the engine from impurities.

[0007] The aforementioned oil filter can be further configured such that: the filter element includes a filter element body and a fixing frame disposed at the center of the filter element body; the bottom of the mounting cavity is provided with a connecting post for the fixing frame to be fitted; and the fixing member is detachably installed at the end of the fixing frame away from the connecting post.

[0008] Using the above technical solution, a fixing frame is set at the center of the filter element body, which works in conjunction with the connecting column at the bottom of the mounting cavity. After the two are fitted together, the filter element can be accurately and stably positioned in the mounting cavity, ensuring that the filter element will not shake or shift due to the impact of oil flow during operation. This ensures the stability and continuity of filtration, and also makes the filter element fit more tightly with other components of the filter, improving the overall sealing performance and reducing the risk of oil leakage. The fixing component is detachably installed at the end of the fixing frame away from the connecting column. When the filter element needs to be replaced, the old filter element can be easily removed and the new filter element installed simply by removing the fixing component.

[0009] The aforementioned oil filter can be further configured such that: a bypass valve is detachably connected to one end of the fixed frame away from the connecting column; the bypass valve is disposed between the fixed frame and the fixed component; the bypass valve has a valve core cavity at its center for valve core installation; the bottom of the sleeve has a valve core hole for insertion into the valve core; the bypass valve has an abutment groove on the outer periphery of the valve core cavity for spring abutment; a limiting plate is provided on the edge of the abutment groove of the valve core cavity; and the limiting plate is placed between the inner wall of the spring and the side wall of the sleeve.

[0010] With the above technical solution, the bypass valve can be detachably connected to the end of the fixing bracket away from the connecting column. When the bypass valve malfunctions or needs maintenance, it can be easily removed from the fixing bracket. The valve core cavity in the center of the bypass valve is used to install the valve core, and the valve core hole at the bottom of the sleeve is inserted into the valve core, ensuring the positioning and stable operation of the valve core during operation. This allows the bypass valve to accurately control the flow path of the engine oil. When the oil filter is clogged, the bypass valve can open in time. In addition, the abutment groove on the outer periphery of the bypass valve's valve core cavity can be used for spring abutment, and the limiting plate on the edge of the abutment groove is placed between the inner wall of the spring and the side wall of the sleeve, which can play a good limiting and guiding role for the spring, ensuring that the spring will not deviate or shake during operation, so that the spring force can act stably and effectively on the bypass valve, ensuring the normal opening and closing of the bypass valve.

[0011] The aforementioned oil filter can be further configured such that: the valve core includes a valve core base plate that abuts against the sleeve and a valve core protrusion disposed at the center of the valve core base plate, the valve core protrusion being inserted into the valve core hole.

[0012] By adopting the above technical solution, the valve core base plate abuts against the sleeve, increasing the contact area between the valve core and the sleeve. The valve core protrusion located at the center of the valve core base plate inserts into the valve core hole, ensuring that the valve core accurately controls the flow of engine oil during operation, making the opening and closing of the bypass valve more precise and reliable. When the oil filter is working normally, the valve core can effectively prevent engine oil from passing through the bypass valve. However, when the filter is clogged and the oil pressure reaches a certain level, the valve core can open the bypass valve in time, allowing the engine oil to bypass the clogged filter and continue to provide lubrication to the engine, preventing engine damage due to lack of oil and ensuring the normal operation of the engine.

[0013] The aforementioned oil filter can be further configured as follows: a first snap-fit ​​block is provided on the outer periphery of the bypass valve, and a snap-fit ​​groove is formed between the first snap-fit ​​block and the bypass valve; a second snap-fit ​​block is provided inside the filter cover to snap-fit ​​with the first snap-fit ​​block, and the second snap-fit ​​block is placed in the snap-fit ​​groove; a threaded body is provided at the bottom of the filter cover; and a thread that mates with the threaded body is provided on the inner wall of the mounting cavity.

[0014] By adopting the above technical solution, the first snap-fit ​​block on the outer periphery of the bypass valve snaps into the second snap-fit ​​block inside the filter cover, and the second snap-fit ​​block is placed in the snap-fit ​​groove, which can ensure that the bypass valve and the filter cover are firmly connected. The threaded body at the bottom of the filter cover is engaged with the threaded part of the inner wall of the mounting cavity, which enhances the stability and reliability of the connection.

[0015] The aforementioned oil filter can be further configured such that: the bottom of the bypass valve is provided with a kit that is sleeved and connected to the fixing bracket; the kit is provided with a plurality of third snap-fit ​​blocks; and the fixing bracket is provided with a plurality of slots for the third snap-fit ​​blocks.

[0016] By adopting the above technical solution, the kit at the bottom of the bypass valve is connected to the fixed frame, which enables the bypass valve to be accurately installed relative to the fixed frame. The several third snap-fit ​​blocks on the kit cooperate with the several slots opened in the fixed frame, which greatly enhances the reliability of the connection.

[0017] The aforementioned oil filter can be further configured such that: an oil inlet and an oil outlet are provided on one side of the filter housing, the oil inlet is connected to the mounting cavity, and an oil outlet channel is provided at the center of the connecting column, the oil outlet channel being connected to the oil outlet.

[0018] With the above technical solution, the oil inlet hole on one side of the filter housing is connected to the mounting cavity, which allows the oil to be filtered to flow smoothly into the mounting cavity of the filter, providing an efficient oil inlet path for the subsequent filtration process. The oil outlet channel set in the center of the connecting column is connected to the oil outlet hole, providing a dedicated outlet channel for the filtered clean oil.

[0019] The aforementioned oil filter can be further configured such that: a sealing groove is provided around the oil outlet and oil inlet of the filter housing, and a sealing element is provided in the sealing groove.

[0020] By adopting the above technical solution, the sealing element can effectively prevent oil leakage. At the same time, the sealing element can also prevent external impurities, dust and other contaminants from entering the filter, maintain the cleanliness of the oil, and extend the service life of the filter and other equipment components.

[0021] The beneficial effects of this utility model are as follows: by limiting the spring with the snap-fit ​​lug, the spring can stably regulate the oil pressure, keep the oil pressure stable, and ensure that the oil circulates normally in the engine and performs its lubricating effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is an exploded view of the bypass valve structure of this utility model; Figure 4 This is a diagram showing the internal structure of the bypass valve of this utility model; Figure 5 This is a cross-sectional view of the filter housing structure of this utility model; Figure 6 This is a cross-sectional view of the filter cover structure of this utility model; Label annotations: 1-Filter housing, 2-Filter cover, 3-Filter element, 4-Mounting cavity, 5-Fixing component, 6-Sleeve, 7-Snap-fit ​​ear, 8-Fixing bracket, 9-Connecting column, 10-Bypass valve, 11-Valve core, 12-Valve core cavity, 13-Valve core hole, 14-Abutment groove, 15-Limiting plate, 16-Valve core base plate, 17-Valve core protrusion, 18-First snap-fit ​​block, 19-Snap-fit ​​groove, 20-Second snap-fit ​​block, 21-Kit, 22-Third snap-fit ​​block, 23-Snap-fit ​​groove, 24-Oil inlet, 25-Oil outlet, 26-Oil outlet channel, 27-Sealing groove, 28-Sealing component, 29-Threaded body, 30-Thread, 31-Spring. Detailed Implementation

[0023] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0024] like Figure 1-6The present invention provides the following technical solution: an oil filter, comprising a filter housing 1, a filter cover 2, and a filter element 3. The filter housing 1 has an installation cavity 4 for installing the filter element 3. The filter cover 2 is detachably connected to the filter housing 1. A fixing member 5 is provided at the center of the filter. The fixing member 5 includes a sleeve 6 for a spring 31 to be fitted. The sleeve 6 has locking ears 7 at both ends that engage with the spring 31, causing the spring 31 to be limited and positioned within the installation cavity 4. One end of the spring 31 abuts against the filter element 3, and the other end abuts against the inner wall of the filter cover 2. By limiting the spring 31 through the locking ears 7, it is ensured that the spring 31 stably regulates the oil pressure, keeping the oil pressure stable, ensuring normal circulation of oil in the engine and providing lubrication, and avoiding increased wear of engine parts due to unstable pressure. On the other hand, the stable setting of the spring 31 ensures that the filter element 3 remains stable within the installation cavity 4, always tightly fitted with the spring 31 and the inner wall of the filter cover 2, fully exerting its filtering function and effectively filtering out engine oil. The filter removes impurities, colloids, and moisture from the oil, delivering clean oil to various lubrication points of the engine, improving filtration efficiency, and reducing damage to the engine from impurities. The filter element 3 includes the filter element 3 body and a fixing bracket 8 located at the center of the filter element 3 body. The bottom of the mounting cavity 4 has a connecting post 9 for the fixing bracket 8 to be fitted. The fixing part 5 is detachably installed at the end of the fixing bracket 8 away from the connecting post 9. The fixing bracket 8 is located at the center of the filter element 3 body, and together with the connecting post 9 at the bottom of the mounting cavity 4, the two fit together to ensure that the filter element 3 is accurately and stably positioned in the mounting cavity 4. This ensures that the filter element 3 will not shake or shift due to the impact of oil flow during operation, ensuring the stability and continuity of filtration. It also makes the filter element 3 fit more tightly with other components of the filter, improving overall sealing and reducing the risk of oil leakage. The fixing part 5 is detachably installed at the end of the fixing bracket 8 away from the connecting post 9. When the filter element 3 needs to be replaced, simply remove the fixing part 5 to easily remove the old filter element 3 and install the new filter element 3.

[0025] like Figure 1-6The present invention provides the following technical solution: an oil filter, wherein a bypass valve 10 is detachably connected to one end of a fixing frame 8 away from the connecting column 9. The bypass valve 10 is disposed between the fixing frame 8 and the fixing member 5. The bypass valve 10 has a valve core cavity 12 at its center for mounting a valve core 11. The bottom of the sleeve 6 has a valve core hole 13 for inserting the valve core 11. The bypass valve 10 has an abutment groove 14 on the outer periphery of the valve core cavity 12 for a spring 31 to abut against. A limiting plate 15 is provided on the edge of the abutment groove 14 and the limiting plate 15 is placed on the spring. Between the inner wall of spring 31 and the side wall of sleeve 6, the bypass valve 10 is detachably connected to the end of the fixing bracket 8 away from the connecting post 9. When the bypass valve 10 malfunctions or requires maintenance, it can be easily removed from the fixing bracket 8. The valve core cavity 12 in the center of the bypass valve 10 is used to install the valve core 11, and the valve core hole 13 at the bottom of sleeve 6 is inserted into the valve core 11, ensuring the positioning and stable operation of the valve core 11 during operation. This allows the bypass valve 10 to accurately control the flow path of the engine oil. When the oil filter becomes clogged, the bypass... Valve 10 can be opened promptly. Furthermore, the abutment groove 14 located on the outer periphery of the bypass valve 10's valve core cavity 12 allows the spring 31 to abut against it. The limiting plate 15 along the edge of the abutment groove 14 is positioned between the inner wall of the spring 31 and the side wall of the sleeve 6, effectively limiting and guiding the spring 31. This ensures that the spring 31 does not shift or wobble during operation, allowing the spring force of the spring 31 to act stably and effectively on the bypass valve 10, guaranteeing its normal opening and closing. The valve core 11 includes a valve core base plate that abuts against the sleeve 6. 16 and a valve core protrusion 17 located at the center of the valve core base plate 16, the valve core protrusion 17 being inserted into the valve core hole 13, the valve core base plate 16 abutting against the sleeve 6, increasing the contact area between the valve core 11 and the sleeve 6, and the valve core protrusion 17 located at the center of the valve core base plate 16 being inserted into the valve core hole 13, can ensure that the valve core 11 accurately controls the flow of engine oil when working, making the opening and closing of the bypass valve 10 more precise and reliable; when the oil filter is working normally, the valve core 11 can effectively prevent engine oil from passing through the bypass valve 10;When the filter becomes clogged and the oil pressure reaches a certain level, the valve core 11 can promptly open the bypass valve 10, allowing the oil to bypass the clogged filter element 3 and continue to lubricate the engine, preventing engine damage due to lack of oil and ensuring normal engine operation. The bypass valve 10 has a first locking block 18 on its outer periphery, forming a locking groove 19 between the first locking block 18 and the bypass valve 10. The filter cover 2 has a second locking block 20 inside, which engages with the first locking block 18 and is placed within the locking groove 19. The bottom of the filter cover 2 has a threaded body 29, and the inner wall of the mounting cavity has a threaded part that... The threaded body 29 engages with the threaded 30. The first snap-fit ​​block 18 on the outer periphery of the bypass valve 10 engages with the second snap-fit ​​block 20 inside the filter cover 2, and the second snap-fit ​​block 20 is placed in the snap-fit ​​groove 19, which ensures a stable connection between the bypass valve 10 and the filter cover 2. The threaded body 29 at the bottom of the filter cover 2 engages with the threaded 30 on the inner wall of the mounting cavity, enhancing the stability and reliability of the connection. The bottom of the bypass valve 10 is provided with a kit 21 that is fitted and connected to the fixing bracket 8. The kit 21 is provided with several third snap-fit ​​blocks 22. The fixing bracket 8 has several slots 23 for the third snap-fit ​​blocks 22. The bottom of the bypass valve 10 The kit 21 is fitted and connected to the fixing bracket 8, allowing the bypass valve 10 to be accurately installed relative to the fixing bracket 8. Several third locking blocks 22 on the kit 21 cooperate with several slots 23 on the fixing bracket 8, greatly enhancing the reliability of the connection. An oil inlet 24 and an oil outlet 25 are provided on one side of the filter housing 1. The oil inlet 24 communicates with the mounting cavity 4. An oil outlet channel 26 is provided at the center of the connecting column 9, communicating with the oil outlet 25. The oil inlet 24 on one side of the filter housing 1 communicates with the mounting cavity 4, allowing the filtered oil to flow smoothly. The oil inlet is located within the mounting cavity 4 of the filter, providing an efficient oil inlet path for the subsequent filtration process. The oil outlet channel 26, located at the center of the connecting column 9, communicates with the oil outlet hole 25, providing a dedicated outflow channel for the filtered clean oil. The filter housing 1 has sealing grooves 27 surrounding the oil outlet and inlet, with a seal 28 installed within the sealing grooves 27. The seal 28 effectively prevents oil leakage and also prevents external impurities and dust from entering the filter, maintaining oil cleanliness and extending the service life of the filter and other equipment components.

[0026] The beneficial effects of this utility model are as follows: by limiting the spring 31 by the snap-fit ​​ear 7, the spring 31 can be guaranteed to stably regulate the oil pressure, keep the oil pressure stable, and ensure that the oil circulates normally in the engine and plays a lubricating role.

Claims

1. An oil filter, comprising a filter housing, a filter cover, and a filter element, wherein the filter housing has an installation cavity for installing the filter element, and the filter cover is detachably connected to the filter housing, characterized in that: The filter has a fixing component at its center. The fixing component includes a sleeve for the spring to be fitted. The sleeve has locking ears at both ends that engage with the spring gap, causing the spring to be limited and positioned in the mounting cavity. One end of the spring abuts against the filter element and the other end abuts against the inner wall of the filter cover.

2. The oil filter according to claim 1, characterized in that: The filter element includes a filter element body and a fixing frame disposed at the center of the filter element body. The bottom of the mounting cavity is provided with a connecting post for the fixing frame to be fitted. The fixing member is detachably installed at the end of the fixing frame away from the connecting post.

3. An oil filter according to claim 2, characterized in that: A bypass valve is detachably connected to one end of the fixed frame away from the connecting column. The bypass valve is located between the fixed frame and the fixed component. The bypass valve has a valve core cavity at its center for valve core installation. The bottom of the sleeve has a valve core hole for valve core insertion. The bypass valve has an abutment groove on the outer periphery of the valve core cavity for spring abutment. A limiting plate is located on the edge of the abutment groove of the valve core cavity. The limiting plate is placed between the inner wall of the spring and the side wall of the sleeve.

4. An oil filter according to claim 3, characterized in that: The valve core includes a valve core base plate that abuts against the sleeve and a valve core protrusion disposed at the center of the valve core base plate. The valve core protrusion is inserted into the valve core hole.

5. An oil filter according to claim 3, characterized in that: The bypass valve has a first snap-fit ​​block on its outer periphery, and a snap-fit ​​groove is formed between the first snap-fit ​​block and the bypass valve. The filter cover has a second snap-fit ​​block that snaps into the first snap-fit ​​block. The second snap-fit ​​block is placed in the snap-fit ​​groove. The bottom of the filter cover has a threaded body, and the inner wall of the mounting cavity has a thread that mates with the threaded body.

6. An oil filter according to claim 5, characterized in that: The bottom of the bypass valve is provided with a kit that is connected to the fixed frame. The kit is provided with several third snap-fit ​​blocks, and the fixed frame is provided with several slots for the third snap-fit ​​blocks.

7. An oil filter according to claim 2, characterized in that: The filter housing has an oil inlet and an oil outlet on one side. The oil inlet communicates with the mounting cavity. The connecting column has an oil outlet channel at its center, which communicates with the oil outlet.

8. An oil filter according to claim 1, characterized in that: The filter housing has a sealing groove around the oil outlet and oil inlet, and a sealing element is provided in the sealing groove.

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