Assembled oil filter

Abstract

The present invention discloses an assembled oil filter, which is connected to an engine. The assembled oil filter includes a bottom cover, an outer cylinder, a one-way valve, a filter element and a first spring. The bottom cover is clamped to the open end of the outer cylinder, and the bottom cover and the inner part of the outer cylinder form a filter cavity. The one-way valve, the filter element and the first spring are all arranged in the filter cavity. The one-way valve is installed on the inner end surface of the bottom cover, and the first spring is arranged on the bottom surface of the inner part of the outer cylinder. The top end of the filter element presses against the one-way valve, and the bottom end of the filter element presses against the first spring. The assembled oil filter provided by the present invention has a reasonable structural design, and is simple and convenient to install and disassemble. It only needs to replace the filter element, which not only saves resources such as non-filter element components in the oil filter and protects the environment well, but also greatly prolongs the life of the oil filter and reduces the cost of the oil filter.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to an assembled oil filter. Background Art

[0002] The oil filter, also known as the oil grid, is used to remove impurities such as dust, metal particles, carbon deposits and soot particles in the oil to protect the engine.

[0003] At present, the filter element and the shell of the oil filter are integrated structures, which are not only complex in structure, but also inconvenient to install and disassemble. In particular, when the filter element of the oil filter reaches the normal service life, the entire oil filter must be completely replaced, which not only causes waste of non-filter element parts, thus causing waste of resources and environmental pollution, but also greatly reduces the service life of the oil filter, thereby greatly increasing the cost of the oil filter. Summary of the invention

[0004] The purpose of the present invention is to provide an assembled oil filter to solve the problems of the existing oil filter having a complex structure, inconvenient installation and disassembly, and a short service life.

[0005] To achieve the above-mentioned purpose, the present invention provides an assembled oil filter, which is connected to an engine and includes a bottom cover, an outer cylinder, a one-way valve, a filter element and a first spring. The bottom cover is clamped on the open end of the outer cylinder, and the bottom cover and the inner part of the outer cylinder form a filter cavity. The one-way valve, the filter element and the first spring are all arranged in the filter cavity. The one-way valve is installed on the inner end surface of the bottom cover, and the first spring is arranged on the bottom surface of the inner part of the outer cylinder. The top end of the filter element presses against the one-way valve, and the bottom end of the filter element presses against the first spring.

[0006] Preferably, the assembled oil filter further comprises a clamping portion, one side of which is fixedly connected to the outer cylinder, and the other side of which is clamped to the bottom cover.

[0007] Preferably, the clamping portion includes an internal sealing ring, a bushing, a plurality of steel balls, a second spring, a retaining spring and a sliding sleeve, and a first annular groove and a second annular groove are sequentially arranged on the outer side of the side wall of the bottom cover from bottom to top, and the internal sealing ring is fixed in the first annular groove, and the internal sealing ring protrudes from the outer surface of the side wall of the bottom cover;

[0008] The outer side of the bushing is fixed to the outer tube, and the inner side of the bushing is clamped to the bottom cover. The bushing is annular, and the lower end of the outer side of the bushing is fixed to the inner side of the open end of the outer tube. The upper end of the bushing is evenly provided with a plurality of circular holes along its circumference, and a plurality of steel balls are embedded in the circular holes. The steel balls protrude from the inner surface of the bushing and press against the inside of the second annular groove. The lower end of the inner side of the bushing presses the internal sealing ring, and the internal sealing ring is used to seal the bushing and the bottom cover.

[0009] An annular recess is provided at the upper end of the outer side of the bushing, the retaining spring is annular, the retaining spring is fixed in the annular recess, and the retaining spring protrudes from the outer surface of the bushing, the second spring is sleeved on the outer side of the bushing, and the second spring is located at the lower side of the annular recess, and the bushing at the lower side of the second spring is provided with a protrusion, and the protrusion is used to limit the second spring;

[0010] The sliding sleeve is arranged on the outer side of the bushing, and the sliding sleeve is annular. An annular convex portion is arranged in the middle part of the inner side of the sliding sleeve, and the inner surface of the annular convex portion is tightly attached to the outer surface of the side wall of the bushing, and the second spring is supported on the lower side of the annular convex portion, and the retaining spring is supported on the upper side of the annular convex portion. The annular convex portion of the sliding sleeve presses the second spring, and the sliding sleeve slides downward. When the sliding sleeve rebounds upward under the action of the second spring, the retaining spring is used to limit the annular convex portion from continuing to move upward, thereby limiting the sliding sleeve.

[0011] Preferably, the assembled oil filter further comprises sealant, and the bushing and the outer cylinder are bonded and fixed by the sealant.

[0012] Preferably, the bushing and the outer cylinder are fixed by laser welding.

[0013] Preferably, the assembled oil filter also includes an external sealing ring, a groove is provided on the outer end surface of the bottom cover, the external sealing ring is embedded in the groove, the bottom cover is connected to the engine, and the external sealing ring is used to seal the gap between the crimping surfaces of the bottom cover and the engine.

[0014] Preferably, the first spring is a conical spring.

[0015] Preferably, an external hexagonal portion is provided on the outer side of the side wall of the bottom cover, and the external hexagonal portion is used to screw the engine onto the bottom cover.

[0016] The present invention has the following advantages:

[0017] The assembled oil filter provided by the present invention includes a bottom cover, an outer cylinder, a one-way valve, a filter element and a first spring, wherein the bottom cover is clamped to the open end of the outer cylinder, and the bottom cover and the inner part of the outer cylinder form a filter cavity. The connection form of the bottom cover clamped to the outer cylinder makes the installation and disassembly structure of the oil filter simpler, and also makes it easier to remove the bottom cover from the outer cylinder, thereby facilitating maintenance personnel to replace only the filter element in the filter cavity, which not only makes the installation and disassembly of the assembled oil filter extremely convenient, but also saves resources such as non-filter element components of the oil filter, and protects the environment well. At the same time, this also greatly prolongs the life of the oil filter and reduces the cost of the oil filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structural explosion of the assembled oil filter provided by the present invention.

[0019] Figure 2 It is a front view of the assembled oil filter provided by the present invention.

[0020] Figure 3 yes Figure 2 Sectional view along line AA.

[0021] In the figure: 1-external sealing ring, 2-bottom cover, 21-external hexagonal portion, 22-first annular groove, 23-second annular groove, 3-sleeve, 4-bushing, 41-annular recess, 42-circular hole, 43-protrusion, 5-outer cylinder, 6-first spring, 7-filter element, 8-sealing ring, 9-second spring, 10-steel ball, 11-stop spring, 12-check valve. DETAILED DESCRIPTION

[0022] The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0023] Example 1

[0024] like Figure 1 and Figure 2 As shown, combined Figure 3 This embodiment provides an assembled oil filter, which is connected to the engine and includes a bottom cover 2, an outer cylinder 5, a one-way valve 12, a filter element 7 and a first spring.

[0025] 6. The bottom cover 2 is clamped to the open end of the outer tube 5, and a filter cavity is formed inside the bottom cover 2 and the outer tube 5. It should be noted that the bottom cover 2 is surrounded by a top wall and a side wall.

[0026] In this embodiment, the connection form in which the bottom cover 2 is snap-connected to the outer cylinder 5 makes the installation and disassembly structure of the oil filter simpler, and also makes it easier to remove the bottom cover 2 from the outer cylinder 5, thereby making it convenient for maintenance personnel to replace only the filter element 7 in the filter cavity. This not only makes the installation and disassembly of the assembled oil filter extremely convenient, but also saves resources such as non-filter element components of the oil filter, and protects the environment well. At the same time, this also greatly extends the life of the oil filter and reduces the cost of the oil filter.

[0027] Specifically, the one-way valve 12, the filter element 7 and the first spring 6 are all arranged in the filter cavity, and the one-way valve 12 is installed on the inner end surface of the bottom cover 2, and the first spring 6 is arranged on the bottom surface inside the outer cylinder 5, the top end of the filter element 7 presses the one-way valve 12, and the bottom end of the filter element 7 presses the first spring 6. The first spring 6 and the one-way valve 12 press the filter element 7, which makes the filter element 7 more firmly fixed inside the filter cavity.

[0028] In a preferred embodiment, the assembled oil filter further includes a clamping portion, one side of which is fixedly connected to the outer cylinder 5, and the other side of which is clamped to the bottom cover 2. By clamping the clamping portion fixed to the outer cylinder 5 and the bottom cover 2, the clamping structure of the assembled oil filter is simplified, making the installation and removal of the bottom cover 2 and the outer cylinder 5 more convenient.

[0029] In a more preferred embodiment, the clamping part includes an internal sealing ring 8, a bushing 4, a plurality of steel balls 10, a second spring 9, a retaining spring 11 and a sliding sleeve 3. A first annular groove 22 and a second annular groove 23 are sequentially arranged on the outer side of the side wall of the bottom cover 2 from bottom to top, and the internal sealing ring 8 is fixed in the first annular groove 22, and the internal sealing ring 8 protrudes from the outer surface of the side wall of the bottom cover 2.

[0030] In this embodiment, Figure 1 As shown, the outer side of the bushing 4 is fixed to the outer tube 5, and the inner side of the bushing 4 is clamped to the bottom cover 2. Specifically, the bushing 4 is annular, and the lower end of the outer side of the bushing 4 is fixed to the inner side of the open end of the outer tube 5. The upper end of the bushing 4 is evenly provided with a plurality of circular holes 42 along its circumference, and a plurality of steel balls 10 are embedded in the circular holes 42, and the steel balls 10 protrude from the inner surface of the bushing 4 and press against the inside of the second annular groove 23. The lower end of the inner side of the bushing 4 presses the internal sealing ring 8, and the internal sealing ring 8 is used to seal the bushing 4 and the bottom cover 2.

[0031] Specifically, an annular recess 41 is provided at the upper end of the outer side of the bushing 4, the retaining spring 11 is in a circular ring shape, fixed in the annular recess 41, and the retaining spring 11 protrudes from the outer surface of the bushing 4, and a second spring 9 is sleeved on the outer side of the bushing 4, and the second spring 9 is located on the lower side of the annular recess 41, and a protrusion 43 is provided on the bushing at the lower side of the second spring 9, and the protrusion 43 is used to limit the second spring 9.

[0032] More specifically, the sleeve 3 is sleeved on the outside of the bushing 4. The sleeve 3 is annular, and an annular convex portion is arranged in the middle of the inner side of the sleeve 3. The inner surface of the annular convex portion is tightly attached to the outer surface of the side wall of the bushing 4, and the second spring 9 is supported on the lower side of the annular convex portion, and the retaining spring 11 is supported on the upper side of the annular convex portion. The annular convex portion of the sleeve 3 presses the second spring 9, and the sleeve 3 slides downward. When the sleeve 3 rebounds upward under the action of the second spring 9, the retaining spring 11 is used to limit the annular convex portion from continuing to move upward, thereby limiting the sleeve 3.

[0033] When the filter element 7 needs to be replaced, it is only necessary to slide the sleeve 3 downwards and pull the bottom cover 2 upwards to separate the bottom cover 2 from the outer cylinder 5; then, after replacing the filter element 7 inside the filter cavity, the bottom cover 2 is pressed toward the inner side of the bushing 4 to engage the bottom cover 2 with the bushing 4, and finally the sleeve 3 is slid upwards. The sleeve 3 is used to ensure the tight engagement between the bottom cover 2 and the bushing 4; the retaining spring 11 is used to prevent the sleeve 3 from sliding out under the elastic action of the second spring 9.

[0034] In this embodiment, the cooperation between the sliding sleeve 3 and the bushing 4 not only enables the bottom cover 2 to be more firmly clamped to the outer tube 5, but also makes the installation and removal of the bottom cover 2 and the outer tube 5 easier.

[0035] Example 2

[0036] This embodiment provides another assembled oil filter, which is partially the same as that of embodiment 1, and the different parts are introduced below.

[0037] In this embodiment, the assembled oil filter further includes sealant, and the bushing 4 and the outer cylinder 5 are fixed by the sealant. The bushing 4 and the outer cylinder 5 are fixed by the sealant, which not only makes the connection between the two more convenient and quick, but also greatly reduces the fixing cost of the bushing 4 and the outer cylinder 5.

[0038] Preferably, if Figure 1 and Figure 3 As shown, the assembled oil filter also includes an external sealing ring 1. A groove is provided on the outer end surface of the bottom cover 2. The external sealing ring 1 is embedded in the groove. The bottom cover 2 is connected to the engine. The external sealing ring 1 is used to seal the gap between the crimping surface of the bottom cover 2 and the engine. The sealing ring 1 not only makes the sealing between the bottom cover 2 and the engine better, but also effectively prevents the oil in the filter cavity from leaking out.

[0039] Example 3

[0040] This embodiment provides another assembled oil filter, which is partially the same as that of embodiment 1, and the different parts are introduced below.

[0041] In this embodiment, the bushing 4 and the outer cylinder 5 are fixed by laser welding. Laser welding makes the connection between the bushing 4 and the outer cylinder 5 more secure.

[0042] Preferably, if Figure 1 and Figure 3 As shown, the first spring 6 is a conical spring. The conical spring better ensures that the filter element 7 is subjected to force in the axial direction of the conical spring, so that the position of the filter element 7 is more stable.

[0043] In a preferred embodiment, Figure 2 As shown, an outer hexagonal portion 21 is provided on the outer side of the side wall of the bottom cover 2 , and the outer hexagonal portion 21 is used to screw the engine onto the bottom cover 2 .

[0044] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An assembled oil filter connected to the engine, It is characterized in that The assembled oil filter comprises a bottom cover, an outer cylinder, a one-way valve, a filter element and a first spring. The bottom cover is clamped to the open end of the outer cylinder, and the bottom cover and the outer cylinder form a filter cavity. The one-way valve, the filter element and the first spring are all arranged in the filter cavity. The one-way valve is installed on the inner end surface of the bottom cover, and the first spring is arranged on the bottom surface of the inner part of the outer cylinder. The top end of the filter element presses against the one-way valve, and the bottom end of the filter element presses against the first spring. The assembled oil filter also comprises a clamping part, one side of the clamping part is fixedly connected to the outer cylinder, and the other side of the clamping part is clamped to the bottom cover. The clamping part includes an internal sealing ring, a bushing, a plurality of steel balls, a second spring, a retaining spring and a sliding sleeve. A first annular groove and a second annular groove are sequentially arranged on the outer side of the side wall of the bottom cover from bottom to top. The internal sealing ring is fixed in the first annular groove, and the internal sealing ring protrudes from the outer surface of the side wall of the bottom cover. The outer side of the bushing is fixed to the outer tube, and the inner side of the bushing is clamped to the bottom cover. The bushing is annular, and the lower end of the outer side of the bushing is fixed to the inner side of the open end of the outer tube. The upper end of the bushing is evenly provided with a plurality of circular holes along its circumference, and a plurality of steel balls are embedded in the circular holes. The steel balls protrude from the inner surface of the bushing and press against the inside of the second annular groove. The lower end of the inner side of the bushing presses the internal sealing ring, and the internal sealing ring is used to seal the bushing and the bottom cover. An annular recess is provided at the upper end of the outer side of the bushing, the retaining spring is annular, the retaining spring is fixed in the annular recess, and the retaining spring protrudes from the outer surface of the bushing, the second spring is sleeved on the outer side of the bushing, and the second spring is located at the lower side of the annular recess, and the bushing at the lower side of the second spring is provided with a protrusion, and the protrusion is used to limit the second spring; The sliding sleeve is arranged on the outer side of the bushing, the sliding sleeve is annular, an annular convex portion is arranged in the middle of the inner side of the sliding sleeve, the inner surface of the annular convex portion is closely attached to the outer surface of the side wall of the bushing, and the second spring is supported on the lower side of the annular convex portion, the retaining spring is supported on the upper side of the annular convex portion, the annular convex portion of the sliding sleeve presses the second spring, the sliding sleeve slides downward, when the sliding sleeve rebounds upward under the action of the second spring, the retaining spring is used to limit the annular convex portion from continuing to move upward, thereby limiting the sliding sleeve; The assembled oil filter further includes an external sealing ring, a groove is provided on the outer end surface of the bottom cover, the external sealing ring is embedded in the groove, the bottom cover is connected to the engine, and the external sealing ring is used to seal the gap between the crimping surfaces of the bottom cover and the engine; The first spring is a conical spring.

2. The assembled oil filter according to claim 1, It is characterized in that The assembled oil filter also includes sealant, and the bushing and the outer cylinder are bonded and fixed by the sealant.

3. The assembled oil filter according to claim 1, It is characterized in that The bushing and the outer cylinder are fixed by laser welding.

4. The assembled oil filter according to claim 1, It is characterized in that An outer hexagonal portion is provided on the outer side of the side wall of the bottom cover, and the outer hexagonal portion is used for screwing the engine onto the bottom cover.

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