Fine filter structure at bottom of motorcycle engine

Abstract

The utility model discloses a fine filter structure at the bottom of a motorcycle engine, and aims to provide the fine filter structure at the bottom of the motorcycle engine, which enables an operator to conveniently and quickly disassemble, assemble and replace a fine filter on a crankcase of the motorcycle engine so as to facilitate the maintenance work of the motorcycle engine. One end of the fine filter is provided with a sealing ring and a threaded inlet located on the inner side of the sealing ring, a threaded connector is arranged on the bottom face of an oil pan at the bottom of a crankcase of an engine, one end of the threaded connector is connected with the threaded connector in a sealed mode, and the fine filter is externally arranged below the oil pan. The other end of the threaded connector is connected with the threaded inlet in a sealed mode, the sealing ring is connected between the fine filter and the oil pan in a sealed mode, and an oil inlet channel communicated with an oil cavity of the crankcase and the threaded connector is arranged in the wall of the crankcase.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil filter, specifically relates to a filter structure for motorcycle engine. BACKGROUND

[0002] The crankcase of motorcycle engine generally needs to be provided with a filter, and the filter is used for filtering the oil in the crankcase, is an important part for ensuring the cleanliness of oil, and needs to be replaced regularly. At present, the filter on the crankcase of motorcycle engine is generally built-in and arranged on the front side of the crankcase body, and the front side, rear side and left and right sides of the crankcase are generally arranged with other parts of the motorcycle. The structure space of the front side, rear side and left and right sides of the crankcase is relatively compact, which leads to inconvenient dismounting and replacing operation of the filter, low efficiency and inconvenience for the maintenance of the motorcycle engine. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of filter structures for motorcycle engine bottom, which can make work personnel conveniently, quickly dismount and replace the filter on the crankcase of motorcycle engine, to facilitate the maintenance of the motorcycle engine.

[0004] The technical scheme of the utility model is as follows:

[0005] The application discloses a motorcycle engine bottom fine filter structure, which comprises a fine filter, a sealing ring and a threaded inlet arranged at one end of the fine filter and located on the inner side of the sealing ring, and a threaded joint, wherein the bottom surface of an oil pan of a crankcase bottom of the engine is provided with a threaded interface, one end of the threaded joint is in sealing connection with the threaded interface, the fine filter is externally arranged below the oil pan, the other end of the threaded joint is in sealing connection with the threaded inlet, the sealing ring is in sealing connection between the fine filter and the oil pan, and an oil inlet channel for connecting an oil cavity of the crankcase and the threaded interface is arranged in the wall of the crankcase.

[0006] As preferred, the oil return channel is further arranged, the fine filter is further provided with an oil outlet hole, the oil outlet hole is located between the threaded inlet and the sealing ring, and the oil return channel is connected with the oil outlet hole and the oil cavity of the crankcase. The oil in the oil cavity of the crankcase enters the fine filter through the oil inlet channel, the oil is filtered through the fine filter, the filtered oil returns to the oil cavity of the crankcase through the oil outlet hole and the oil return channel, and the oil filtering circulation is formed.

[0007] As preferred, the oil return channel comprises a bottom shell channel arranged in the shell wall of the oil pan and a tank channel arranged in the wall of the crankcase, one end of the bottom shell channel is connected with the oil outlet hole, the other end of the bottom shell channel is connected with one end of the tank channel, and the other end of the tank channel is connected with the oil cavity of the crankcase. In this way, the oil return channel can be directly arranged in the shell wall of the oil pan and the wall of the crankcase, without additional external pipeline, so that the number of parts can be reduced, the installation step of the corresponding external pipeline can be saved, the manufacturing cost can be reduced, and the production efficiency can be improved.

[0008] As preferred, the oil return channel further comprises an annular groove arranged on the bottom surface of the oil pan, the annular groove is located between the sealing ring and the threaded interface, the oil outlet hole is communicated with the groove of the annular groove, and one end of the oil pan channel is communicated with the annular groove. In this way, the oil outlet hole of the fine filter can be communicated with the oil pan channel through the annular groove, so that the engine oil filtered through the fine filter can smoothly flow back to the oil cavity of the crankcase through the oil outlet hole and the oil return channel, forming an engine oil filtering cycle.

[0009] As preferred, the bottom surface of the oil pan is provided with an annular boss, the threaded interface is located in the annular boss, the end surface of the annular boss forms a sealing connection surface, and the sealing ring forms a sealing connection between the fine filter and the sealing connection surface. In this way, the sealing ring can form a sealing connection between the fine filter and the sealing connection surface, thereby ensuring the sealing connection between the fine filter and the bottom surface of the oil pan.

[0010] As preferred, the fine filter is located at the front of the crankcase bottom. The position of the fine filter arranged on the crankcase bottom can be arranged according to actual needs and different vehicle models, so as to facilitate actual production and subsequent fine filter disassembly and replacement. In this scheme, the fine filter is located at the front of the crankcase bottom.

[0011] As preferred, the fine filter is located at the middle of the crankcase bottom. The position of the fine filter arranged on the crankcase bottom can be arranged according to actual needs and different vehicle models, so as to facilitate actual production and subsequent fine filter disassembly and replacement. In this scheme, the fine filter is located at the middle of the crankcase bottom.

[0012] As preferred, the fine filter is located at the rear of the crankcase bottom. The position of the fine filter arranged on the crankcase bottom can be arranged according to actual needs and different vehicle models, so as to facilitate actual production and subsequent fine filter disassembly and replacement. In this scheme, the fine filter is located at the rear of the crankcase bottom.

[0013] As preferred, the oil pan has a protruding part protruding downward, and the protruding part is located on one side of the fine filter. In this way, on the one hand, the fine filter can avoid the protruding part on the oil pan, and on the other hand, the protruding part can play a certain protective role on one side of the fine filter.

[0014] As preferred, the bottom surface of the oil pan is provided with a side guard plate, and the fine filter is located between the protruding part and the side guard plate. In this way, the protruding part and the side guard plate can play a certain protective role on one side of the fine filter.

[0015] The beneficial effects of this utility model are as follows: Firstly, the fine filter can be directly disassembled and replaced from below the crankcase. The disassembly and replacement of the fine filter is not affected by other parts of the motorcycle, and the fine filter can be unscrewed directly. Therefore, the disassembly and replacement of the fine filter is convenient and quick, which can effectively improve the efficiency of fine filter disassembly and replacement and is beneficial to the maintenance of the motorcycle engine. Secondly, by installing the fine filter in the empty position below the crankcase, more space can be provided on the front or rear side of the crankcase to install other parts of the motorcycle, which is beneficial to the arrangement of other parts of the motorcycle. Attached Figure Description

[0016] Figure 1 This is a three-dimensional partial structural diagram of a fine filter structure at the bottom of a motorcycle engine according to the present invention.

[0017] Figure 2 This is a partial side view of a fine filter structure at the bottom of a motorcycle engine according to the present invention.

[0018] Figure 3 This is a partial cross-sectional view of a fine filter structure at the bottom of a motorcycle engine according to the present invention.

[0019] In the picture:

[0020] Fine filter 1, threaded inlet 1.1, sealing ring 1.2, oil outlet 1.3;

[0021] Crankcase 2, oil inlet passage 2.1;

[0022] Oil pan 3, protrusion 3.1, side guard plate 3.2, threaded interface 3.3, annular groove 3.4, bottom shell channel 3.5;

[0023] Threaded connector 4. Detailed Implementation

[0024] Specific Implementation Example 1, such as Figures 1-3 As shown, a fine filter structure at the bottom of a motorcycle engine includes a fine filter 1, a threaded connector 4, an oil inlet channel 2.1, and an oil return channel. One end of the fine filter 1 is provided with a sealing ring 1.2 and a threaded inlet 1.1 located inside the sealing ring 1.2. The other end of the fine filter 1 is also provided with an oil outlet 1.3. The threaded inlet 1.1 is located in the middle of one end of the fine filter 1. The sealing ring 1.2 extends along the edge of one end of the fine filter 1. The oil outlet 1.3 is located between the threaded inlet 1.1 and the sealing ring 1.2. The threaded connector 4 refers to a threaded pipe fitting, and both ends of the threaded connector 4 are provided with external threads.

[0025] The bottom surface of the oil pan 3 at the bottom of the crankcase 2 of the engine is provided with a threaded interface 3.3. Specifically, the crankcase 2 includes an upper case and a lower case, the upper case and the lower case are connected by bolts, and the oil pan 3 is connected to the lower end surface of the lower case by bolts. One end of the threaded connector 4 is in sealing connection with the threaded interface 3.3. The fine filter 1 is externally arranged below the oil pan 3. The other end of the threaded connector 4 is in sealing connection with the threaded inlet 1.1. The sealing ring 1.2 forms a sealing connection between the fine filter 1 and the oil pan 3. Specifically, one end of the fine filter 1 abuts against the bottom surface of the oil pan 3, so that the sealing ring 1.2 forms a sealing connection between the fine filter 1 and the oil pan 3.

[0026] The oil inlet channel 2.1 communicates the oil cavity of the crankcase 2 with the threaded interface 3.3. Specifically, one end of the oil inlet channel 2.1 communicates with the threaded interface 3.3, and the other end of the oil inlet channel 2.1 communicates with the oil cavity of the crankcase. In this embodiment, the oil inlet channel 2.1 is arranged in the wall of the crankcase 2, and the oil inlet channel 2.1 and the wall of the crankcase 2 are integrally formed. The oil return channel communicates the oil outlet hole 1.3 with the oil cavity of the crankcase 2. The oil in the oil cavity of the crankcase 2 enters the fine filter 1 through the oil inlet channel 2.1, is filtered by the fine filter 1, and then returns to the oil cavity of the crankcase 2 through the oil outlet hole 1.3 and the oil return channel, forming an oil filtering cycle.

[0027] Because the front side, rear side and left and right sides of the crankcase 2 of the motorcycle are generally arranged with other parts of the motorcycle (the left and right sides of the crankcase 2 are generally arranged with decorative plates, and the front and rear sides are generally arranged with functional parts of the motorcycle), the structure space of the front side, rear side and left and right sides of the crankcase 2 is relatively compact; but the lower part of the crankcase 2 is generally not arranged with parts. Therefore, the fine filter 1 of this embodiment is installed in the threaded interface 3.3 on the bottom surface of the oil pan 3 at the bottom of the crankcase 2 of the motorcycle engine through the threaded connector 4, so that the fine filter 1 is installed in the vacant position below the crankcase 2 (the fine filter is externally arranged below the oil pan), so that the fine filter 1 can be directly disassembled and replaced from below the crankcase 2, and the disassembly and replacement of the fine filter 1 is not affected by other parts of the motorcycle (the other parts of the motorcycle do not need to be disassembled during the replacement of the fine filter), and the fine filter can be directly screwed off for disassembly and directly screwed on for installation, so that the fine filter 1 is convenient and fast to disassemble and replace, and the efficiency of disassembly and replacement of the fine filter 1 can be effectively improved, which is beneficial to the maintenance of the motorcycle engine. On the other hand, by installing the fine filter 1 in the vacant position below the crankcase 2, more space can be provided on the front side or rear side of the crankcase 2 for installing other parts of the motorcycle, which is beneficial to the arrangement of other parts of the motorcycle.

[0028] Specifically, as shown in Figures 1-3As shown, a motorcycle engine bottom fine filter structure, including fine filter 1, threaded joint 4, oil inlet channel 2.1 and oil return channel. Fine filter 1 one end is provided with sealing ring 1.2 and threaded inlet 1.1 inside sealing ring 1.2. Fine filter 1 one end is also provided with oil outlet hole 1.3. Threaded inlet 1.1 is located in the middle of the one end of fine filter 1. Sealing ring 1.2 extends along the edge of the one end of fine filter 1. Oil outlet hole 1.3 is located between threaded inlet 1.1 and sealing ring 1.2.

[0029] Threaded joint 4 refers to threaded pipe, both ends of threaded joint 4 are provided with external threads.

[0030] The bottom surface of oil pan 3 at the bottom of crankcase 2 of engine is provided with threaded interface 3.3. One end of threaded joint 4 is in sealing connection with threaded interface 3.3. Fine filter 1 is externally arranged below oil pan 3. The other end of threaded joint 4 is in sealing connection with threaded inlet 1.1. Sealing ring 1.2 forms sealing connection between fine filter 1 and oil pan 3, specifically, one end of fine filter 1 abuts against the bottom surface of oil pan 3, so that sealing ring 1.2 forms sealing connection between fine filter 1 and oil pan 3.

[0031] Oil inlet channel 2.1 communicates the oil cavity of crankcase 2 with threaded interface 3.3. Specifically, one end of oil inlet channel 2.1 is connected with threaded interface 3.3, and the other end of oil inlet channel 2.1 communicates with the oil cavity of crankcase. In the embodiment, oil inlet channel 2.1 is arranged in the wall of crankcase 2, and oil inlet channel 2.1 is integrally formed with the wall of crankcase 2. Oil return channel communicates oil outlet hole 1.3 with the oil cavity of crankcase 2. The oil in the oil cavity of crankcase 2 enters fine filter 1 through oil inlet channel 2.1, is filtered by fine filter 1, and the filtered oil returns to the oil cavity of crankcase 2 through oil outlet hole 1.3 and oil return channel, forming oil filtering circulation.

[0032] Specifically, crankcase 2 includes upper box body and lower box body, the upper box body and the lower box body are connected by bolts, and the oil pan 3 is connected to the lower end surface of the lower box body by bolts. Oil inlet channel 2.1 is arranged in the wall of the lower box body of crankcase 2, one end of oil inlet channel 2.1 is connected with the lower end surface of the lower box body of crankcase 2, and the upper end of threaded interface 3.3 communicates with the upper end surface of oil pan 3. One end of oil inlet channel 2.1 is aligned with the upper end of threaded interface 3.3, and the lower end surface of the lower box body where one end of oil inlet channel 2.1 is located is in sealing connection with the upper end surface of oil pan 3 where the upper end of threaded interface 3.3 is located, so that one end of oil inlet channel 2.1 is in sealing connection with the upper end of threaded interface 3.3.

[0033] Further, as shown in FIG. 2, the fine filter 1 is arranged in the oil pan 3, and the oil inlet channel 2.1 is arranged in the wall of the lower box body of the crankcase 2. Figure 1 , Figure 2As shown in the drawings, the oil sump 3 has a downward protruding protrusion 3.1, which is integrally formed with the oil sump 3. The protrusion is located on one side of the fine filter 1. In this way, on the one hand, the fine filter 1 can avoid the protrusion on the oil sump 3, and on the other hand, the protrusion can provide a certain protective effect to the side of the fine filter 1.

[0034] In one example, the lowest position of the fine filter 1 is higher than the lowest position of the protrusion on the oil sump 3. In this arrangement, the lowest part of the fine filter 1 can be prevented from being too low and occupying too much lower space.

[0035] In another example, the lowest position of the fine filter 1 is lower than the lowest position of the protrusion on the oil sump 3. This is beneficial for the arrangement of a larger volume of the fine filter 1.

[0036] Further, as shown in the drawings, Figure 1 , Figure 2 the oil sump 3 has a side guard plate 3.2 on the bottom surface, which is integrally formed with the oil sump 3. The fine filter 1 is located between the protrusion and the side guard plate. In this way, the protrusion and the side guard plate can provide a certain protective effect to the side of the fine filter 1.

[0037] Further, as shown in the drawings, Figure 3 the oil return channel includes a sump channel 3.5 provided in the wall of the oil sump 3 and a crankcase channel provided in the wall of the crankcase 2. One end of the sump channel 3.5 communicates with the oil outlet hole 1.3, and the other end of the sump channel 3.5 communicates with one end of the crankcase channel. The other end of the crankcase channel communicates with the oil cavity of the crankcase 2. In this way, the oil return channel can be directly built into the wall of the oil sump 3 and the wall of the crankcase 2, without the need for additional external piping, which can reduce parts and eliminate the installation steps of the corresponding external piping, thereby reducing production costs and improving production efficiency.

[0038] Further, as shown in the drawings, Figure 3 the oil return channel also includes an annular groove 3.4 provided on the bottom surface of the oil sump 3. The opening of the annular groove 3.4 faces downward. The annular groove 3.4 is located between the sealing ring 1.2 and the threaded interface 3.3, so that the end of the fine filter 1 seals the opening of the annular groove 3.4. The oil outlet hole 1.3 communicates with the opening of the annular groove 3.4. One end of the sump channel 3.5 communicates with the annular groove 3.4. In this way, the oil outlet hole 1.3 of the fine filter 1 can communicate with the sump channel 3.5 through the annular groove 3.4, ensuring that the oil filtered through the fine filter 1 can smoothly flow back to the oil cavity of the crankcase 2 through the oil outlet hole 1.3 and the oil return channel, forming an oil filtering cycle.

[0039] Further, as shown in the drawings, Figure 3As shown, the bottom surface of the oil pan 3 is provided with an annular boss. The threaded interface 3.3 is located in the annular boss. The end surface of the annular boss forms a sealing connection surface. The sealing ring 1.2 forms a sealing connection between the fine filter 1 and the sealing connection surface. In this way, the sealing ring 1.2 can form a sealing connection between the fine filter 1 and the sealing connection surface, thereby ensuring the sealing connection between the fine filter 1 and the bottom surface of the oil pan 3.

[0040] In this embodiment, the end surface of the annular boss is a machined flat surface, which can ensure the smoothness and flatness of the sealing connection surface, thereby ensuring the sealing connection between the fine filter 1 and the sealing connection surface, and further ensuring the sealing connection between the fine filter 1 and the bottom surface of the oil pan 3.

[0041] Since the front, rear and left and right sides of the motorcycle crankcase 2 are generally arranged with other parts of the motorcycle (where the left and right sides of the crankcase 2 are generally arranged with decorative plates, and the front and rear sides are generally arranged with functional parts of the motorcycle), the structure space of the front, rear and left and right sides of the crankcase 2 is relatively compact; but the lower part of the crankcase 2 is generally not arranged with parts. Therefore, the fine filter 1 of the present embodiment is installed in the threaded interface 3.3 on the bottom surface of the oil pan 3 at the bottom of the motorcycle engine crankcase 2 through the threaded joint 4, thereby installing the fine filter 1 in the vacant position below the crankcase 2 (the fine filter is externally arranged below the oil pan), in this way, on the one hand, the fine filter 1 can be directly disassembled and replaced from below the crankcase 2, and the disassembly and replacement of the fine filter 1 is not affected by other parts of the motorcycle (during the replacement of the fine filter, other parts of the motorcycle do not need to be disassembled), and the fine filter can be directly unscrewed to complete the disassembly, and the fine filter can be directly screwed to complete the installation, so that the fine filter 1 is convenient and fast to disassemble and replace, which can effectively improve the disassembly and replacement efficiency of the fine filter 1, and is beneficial to the maintenance of the motorcycle engine; on the other hand, by installing the fine filter 1 in the vacant position below the crankcase 2, the front or rear side of the crankcase 2 has more space to install other parts of the motorcycle, which is beneficial to the arrangement of other parts of the motorcycle.

[0042] In specific embodiment three, the remaining structure of the present embodiment refers to specific embodiment one or specific embodiment two, and the difference lies in that,

[0043] The position of the fine filter 1 arranged at the bottom of the crankcase 2 can be arranged according to actual needs and different vehicle models, in order to facilitate actual production and subsequent disassembly and replacement of the fine filter 1. In this embodiment, the fine filter 1 is located at the front of the bottom of the crankcase 2. By locating the fine filter 1 at the front of the bottom of the crankcase 2, it is suitable for the case where the front of the bottom of the crankcase 2 has a larger vacant position, and it adapts to the actual needs of such vehicle models, in order to facilitate the actual production and subsequent disassembly and replacement of the fine filter 1 of such vehicle models.

[0044] In the fourth embodiment, the remaining structure is the same as that of the first embodiment or the second embodiment, but differs from them in that,

[0045] The position of the fine filter 1 arranged at the bottom of the crankcase 2 can be arranged according to actual needs and different vehicle models, so as to facilitate actual production and subsequent disassembly and replacement of the fine filter 1. In the embodiment, the fine filter 1 is located at the middle of the bottom of the crankcase 2. The fine filter 1 is located at the middle of the bottom of the crankcase 2, which is suitable for the case that the middle of the bottom of the crankcase 2 has a larger vacant position, and adapts to the actual needs of such vehicle models, so as to facilitate actual production and subsequent disassembly and replacement of the fine filter 1.

[0046] In the fifth embodiment, the remaining structure is the same as that of the first embodiment or the second embodiment, but differs from them in that,

[0047] The position of the fine filter 1 arranged at the bottom of the crankcase 2 can be arranged according to actual needs and different vehicle models, so as to facilitate actual production and subsequent disassembly and replacement of the fine filter 1. In the embodiment, the fine filter 1 is located at the rear of the bottom of the crankcase 2. The fine filter 1 is located at the rear of the bottom of the crankcase 2, which is suitable for the case that the rear of the bottom of the crankcase 2 has a larger vacant position, and adapts to the actual needs of such vehicle models, so as to facilitate actual production and subsequent disassembly and replacement of the fine filter 1.

[0048] The above is only a preferred embodiment of the present application, and does not limit the present application. Any simple modification, change and equivalent transformation of the above embodiment according to the technical essence of the present application still belong to the protection scope of the technical scheme of the present application.

Claims

1. A fine filter structure for the bottom of a motorcycle engine, comprising a fine filter having a sealing ring at one end and a threaded inlet inside the sealing ring, characterized in that, The threaded joint is provided with a threaded interface on the bottom surface of the oil pan of the engine, one end of the threaded joint is in sealed connection with the threaded interface, the fine filter is externally arranged below the oil pan, the other end of the threaded joint is in sealed connection with the threaded inlet, the sealing ring forms a sealed connection between the fine filter and the oil pan, and the oil cavity of the crankcase is provided with an oil inlet channel in communication with the threaded interface.

2. The motorcycle engine bottom portion filter structure according to claim 1, characterized by, The oil return channel is further provided with an oil outlet hole at one end of the fine filter, the oil outlet hole is located between the threaded inlet and the sealing ring, and the oil return channel is in communication with the oil outlet hole and the oil cavity of the crankcase.

3. The motorcycle engine bottom portion filter structure according to claim 2, characterized by, The oil return channel comprises a bottom shell channel arranged in the shell wall of the oil pan and a tank channel arranged in the tank wall of the crankcase, one end of the bottom shell channel is in communication with the oil outlet hole, the other end of the bottom shell channel is in communication with one end of the tank channel, and the other end of the tank channel is in communication with the oil cavity of the crankcase.

4. The motorcycle engine bottom portion filter structure according to claim 3, characterized by The oil return channel further comprises an annular groove arranged on the bottom surface of the oil pan, the annular groove is located between the sealing ring and the threaded interface, the oil outlet hole is in communication with the groove opening of the annular groove, and one end of the bottom shell channel is in communication with the annular groove.

5. The structure of the fine filter at the bottom of the motorcycle engine according to any one of claims 1 to 4, characterized in that, The bottom surface of the oil pan is provided with an annular boss, the threaded interface is located in the annular boss, the end surface of the annular boss forms a sealed connection surface, and the sealing ring forms a sealed connection between the fine filter and the sealed connection surface.

6. The structure of the fine filter at the bottom of a motorcycle engine according to any one of claims 1 to 4, characterized in that, The fine filter is located at the front of the bottom of the crankcase.

7. The structure of the fine filter at the bottom of a motorcycle engine according to any one of claims 1 to 4, characterized in that, The fine filter is located at the middle of the bottom of the crankcase.

8. The structure of the fine filter at the bottom of a motorcycle engine according to any one of claims 1 to 4, characterized in that, The fine filter is located at the rear of the bottom of the crankcase.

9. The structure of the fine filter at the bottom of a motorcycle engine according to any one of claims 1 to 4, characterized in that, The oil pan is provided with a protruding part protruding downward, and the protruding part is located on one side of the fine filter.

10. The structure of the fine filter of the bottom of the motorcycle engine according to claim 9, characterized in that, The bottom surface of the oil pan is provided with a side guard plate, and the fine filter is located between the protruding part and the side guard plate.

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