Oil strainer

Abstract

To provide an oil strainer that is space-saving and can filter oil.SOLUTION: An oil strainer 30 is provided in a transmission 10, and comprises an oil passage 34 extending linearly and parallel to an axis of a gear provided in the transmission 10, and a filter member 40 extending linearly and inserted into the oil passage 34.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an oil strainer.

Background Art

[0002] An oil strainer is provided in vehicle parts such as a transmission (for example, Patent Document 1, etc.). The oil used for lubricating the parts is sucked by the oil strainer.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An oil strainer includes a passage for circulating oil and a structure for filtering oil. Since, for example, gears are provided in a transmission, the space for mounting the oil strainer is limited. Therefore, an object is to provide an oil strainer that saves space and can filter oil.

Means for Solving the Problems

[0005] The above object can be achieved by an oil strainer provided in a transmission, extending linearly, having an oil passage parallel to the axis of a gear provided in the transmission, and extending linearly and having a filtering member inserted into the oil passage.

[0006] Comprising a plurality of the oil passages, the plurality of oil passages being adjacent and communicating with each other, one of the plurality of oil passages having an oil suction port, and the filtering member may be inserted into the one oil passage.

[0007] The filtration member may have a mesh structure at a position opposite to the suction port.

[0008] The oil passage may be located at the bottom of the transmission. [Effects of the Invention]

[0009] We can provide an oil strainer that is space-saving and capable of filtering oil. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a schematic diagram illustrating an oil strainer according to an embodiment. [Figure 2] Figure 2(a) is a perspective view illustrating a transmission. Figure 2(b) is a magnified view of the area near the oil strainer. [Figure 3] Figure 3 is a perspective view illustrating a filtration component. [Modes for carrying out the invention]

[0011] The oil strainer of this embodiment will now be described with reference to the drawings. Figure 1 is a schematic diagram illustrating an oil strainer 30 according to the embodiment, showing a plan view of the transmission 10. Figure 2(a) is a perspective view illustrating the transmission 10. Figure 2(b) is an enlarged view of the vicinity of the oil strainer 30. The filtration member 40 is omitted in Figures 2(a) and 2(b). The X-axis, Y-axis, and Z-axis directions are orthogonal to each other.

[0012] The transmission 10 has multiple gears. The dotted line in Figure 1 represents the gear axis 12. The axis 12 is parallel to the X-axis. As shown in Figure 2(a), the transmission 10 has a cavity 14. Multiple gears (not shown) are arranged in the cavity 14.

[0013] As shown in Figures 1 to 2(b), the oil strainer 30 is provided in the transmission 10. The oil strainer 30 has three oil passages 32, 34 and 36, as well as a filtration member 40. As shown in Figure 2(a), the oil passages 32, 34 and 36 are located at the bottom of the transmission 10 and are provided below the cavity 14.

[0014] As shown in Figure 1, the oil passages 32, 34, and 36, and the filtration member 40 are linear and parallel to the X-axis. The oil passages 32, 34, and 36 are aligned in the Y-axis direction. Oil passage 34 is located between oil passages 32 and 36 and communicates with them. A suction port 38 and a filtration member 40 are provided in one of the oil passages 32. The suction port 38 is located on the wall of oil passage 32 opposite to oil passage 34. The suction port 38 is located near one end of oil passage 32 in the X-axis direction. The filtration member 40 is inserted into oil passage 32.

[0015] Figure 3 is a perspective view illustrating the filtration member 40. A cavity 41 is formed in the filtration member 40 at the position opposite to the oil passage 34, i.e., on the side closer to the suction port 38. The filtration member 40 has a mesh structure 42 on the wall surface facing the oil passage 34. That is, approximately half of the side surface of the cylindrical filtration member 40 is a cavity 41, and the remaining part of the side surface is the mesh structure 42. The mesh structure 42 includes a plurality of openings 43. The openings 43 penetrate the wall of the filtration member 40.

[0016] As shown in Figure 1, the oil pump 20 is located outside the transmission 10. The oil passage 22 is connected to the oil pump 20 and to oil passages 32, 34, and 36. Oil passage 22 is connected to one end of oil passage 34 in the X-axis direction. The suction port 38 is located opposite oil passage 22.

[0017] Oil flows through the transmission 10. The oil pump 20 rotates, for example, by power transmitted from an internal combustion engine (not shown), and draws in oil. The oil is introduced into the oil passage 32 through the suction port 38, and also into oil passages 34 and 36. As the oil flows out from oil passage 32 to oil passage 34, it passes through the mesh structure 42 of the filter member 40. The oil flows out of oil passage 32 through the opening 43 of the mesh structure 42. Foreign matter in the oil is trapped by the mesh structure 42 and is less likely to flow out of oil passage 32. The oil filtered by the mesh structure 42 flows from oil passages 32, 34 and 36 to oil passage 22 and is introduced into parts (not shown), etc.

[0018] According to this embodiment, the oil strainer 30 has oil passages 32, 34, and 36, and a filtering member 40. The oil passages 32, 34, and 36, and the filtering member 40 extend in a straight line. Therefore, the space occupied by the oil strainer 30 within the transmission 10 is smaller compared to, for example, when the oil passages are curved. In other words, space saving is possible. The filtering member 40 is inserted into the oil passage 32. The oil flowing out from the oil passage 32 is filtered by the filtering member 40. It is possible to filter the oil and remove foreign matter from the oil.

[0019] As shown in Figure 1, the oil passages 32, 34, and 36 are parallel to the shaft 12 of the gear provided in the transmission 10. The filter member 40 inserted into the oil passage 32 is also parallel to the shaft 12. This allows for space saving of the oil strainer 30.

[0020] The oil passage 32 is adjacent to the oil passage 34 and communicates with each other. The oil passage 34 is adjacent to the oil passage 36 and communicates with each other. The oil passage 32 has a suction port 38. Oil flows into the oil passage 32 from the suction port 38 and flows from the oil passage 32 to the oil passages 34 and 36. The filtering member 40 is inserted into the oil passage 32. When the oil flows out of the oil passage 32, it is filtered by the mesh structure 42 of the filtering member 40. Foreign matters can be removed by filtration.

[0021] The filtering member 40 has a mesh structure 42 on the side opposite to the suction port 38. The oil sucked from the suction port 38 passes through the mesh structure 42 and is filtered. Foreign matters can be removed by filtration. The suction port 38 does not face the mesh structure 42 but faces the cavity 41 of the filtering member 40. The pressure loss of the oil when being sucked from the suction port 38 can be suppressed.

[0022] The length of the filtering member 40 is equal to the length of the oil passage 32. The filtering member 40 is provided throughout the oil passage 32. The mesh structure 42 is arranged throughout the space between the oil passage 32 and the oil passage 34. When the oil flows out of the oil passage 32, it will pass through the mesh structure 42. Foreign matters in the oil can be removed. Since the mesh structure 42 is formed throughout the space between the oil passage 32 and the oil passage 34, the area of the mesh structure 42 becomes larger. The pressure loss of the oil can be suppressed.

[0023] The oil pump 20 is attached at a position opposite to the suction port 38 among the oil passages. The oil sucked from the suction port 38 flows through the oil passage and flows out of the transmission 10 from the oil passage 22. When the oil flows out of the oil passage 32, it will pass through the mesh structure 42. The pressure loss of the oil can be suppressed.

[0024] The oil passages 32, 34, and 34 are located at the bottom of the transmission 10 and below the cavity 14. Oil falls to the bottom from the gears and other components and is introduced into the oil passage 32 through the suction port 38. Air is less likely to mix with the oil, and air intake can be suppressed. The oil strainer 30 can effectively draw in the oil.

[0025] The number of oil passages may be three or fewer, or three or more. Installing filtration members 40 in multiple oil passages increases oil pressure loss. It is sufficient to install the filtration member in only one of the multiple oil passages. This suppresses pressure loss while still allowing oil filtration. The number of holes in the mesh structure 42 can be determined according to the length of the filtration member 40, etc.

[0026] Although preferred embodiments of the present invention have been described in detail above, the present invention is not limited to these specific embodiments, and various modifications and changes are possible within the scope of the gist of the present invention as described in the claims. [Explanation of Symbols]

[0027] 10 Transmission, 12 Shaft, 14, 41 Cavity, 20 Oil pump, 22, 32, 34, 36 Oil passage, 30 Oil strainer, 38 Suction port, 40 Filtration member, 42 Mesh structure, 43 Opening

Claims

1. A plurality of oil passages are provided in the transmission, extending in a straight line and parallel to the shaft of the gear provided in the transmission, It comprises a filter member that extends in a straight line and is inserted into the oil passage, The aforementioned plurality of oil passages extend in the first direction, The plurality of oil passages are arranged in a second direction that intersects with the first direction. In the second direction, the plurality of oil passages are adjacent to each other and communicate with each other. Of the aforementioned plurality of oil passages, the first oil passage is in communication with the second oil passage. In the first oil passage, an oil suction port is provided on the wall surface opposite to the second oil passage in the second direction. The filter member is inserted into the first oil passage. The filtration member is an oil strainer having a mesh structure at a position opposite to the suction port.

2. The oil strainer according to claim 1, wherein the oil passage is located at the bottom of the transmission.

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