Foreign object removal device

Abstract

This prevents foreign matter from accumulating in the collection component. [Solution] The foreign matter removal device comprises a housing case detachably connected to a strainer, and a drive device that drives a collecting member provided in the housing case and capable of collecting foreign matter contained in the oil flowing through the strainer. The drive device drives the collecting member to a first position in which it protrudes into the strainer, and to a second position in which it retracts the collecting member from inside the strainer into the housing case.

Description

Technical Field

[0001] The present invention relates to a foreign matter removing device.

Background Art

[0002] For example, Patent Document 1 discloses an oil filter provided with a main filter element and a pre-filter element having a coarser filtration mesh than the main filter element in a filtration chamber. In such Patent Document 1, relatively large foreign matters are captured by the pre-filter element, and relatively small foreign matters are captured by the main filter element. Therefore, according to Patent Document 1, since it is difficult for relatively large foreign matters to reach the main filter element, it is possible to mitigate the main filter element from becoming clogged.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when a large amount of foreign matters are contained in the oil, even if a pre-filter element is provided in addition to the main filter element, foreign matters accumulate in the filter functioning as a collection member and clogging occurs. When clogging of the collection member occurs, the flow of the oil is hindered by the foreign matters, and there is a risk of impairing the function of the oil pump.

[0005] Therefore, an object of the present invention is to suppress the accumulation of foreign matters in the collection member.

Means for Solving the Problems

[0006] In order to solve the above problems, a foreign matter removing device according to an embodiment of the present invention is A housing case that is detachably connected to the strainer, A drive device is provided in the aforementioned containment case and drives a collection member capable of collecting foreign matter contained in the oil flowing through the strainer, Equipped with, The drive device drives the collection member to a first position in which it protrudes into the strainer, and to a second position in which it retracts the collection member from inside the strainer into the housing case. [Effects of the Invention]

[0007] According to the present invention, it is possible to suppress the accumulation of foreign matter in the collection member. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a schematic diagram showing an example of the configuration of the oil supply device according to this embodiment. [Figure 2] Figure 2 is a schematic diagram showing the state in which the collection member is driven to the retracted position in the foreign matter removal device according to this embodiment. [Figure 3] Figure 3 is a block diagram showing an example of the configuration of the control device according to this embodiment. [Figure 4] Figure 4 is a block diagram showing an example of the functional configuration of the control device according to this embodiment. [Figure 5] Figure 5 is a flowchart illustrating an example of control processing by the control unit. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described in detail below with reference to the attached drawings. The specific dimensions, materials, numerical values, etc., shown in these embodiments are merely examples to facilitate understanding of the invention and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals to avoid redundant explanations, and elements not directly related to the present invention are omitted from the illustrations.

[0010] Figure 1 is a schematic diagram showing an example of the configuration of an oil supply device 1 according to this embodiment. The oil supply device 1 is applied to a vehicle 2, for example. The vehicle 2 is, for example, an engine-powered automobile or a hybrid electric vehicle. Note that the vehicle 2 may be an electric vehicle. In Figure 1, the Z direction indicates the vertical direction, the X direction indicates a predetermined direction in the horizontal direction, and the Y direction indicates a direction perpendicular to the X direction in the horizontal direction. The X direction is, for example, the forward and backward direction of the vehicle 2, and the Y direction is, for example, the left and right direction of the vehicle 2.

[0011] The oil supply device 1 includes an oil pan 100, a strainer 110, a foreign matter removal device 200, and an oil pump (not shown). The oil pan 100 is a container capable of storing oil 120. Oil 120 is stored inside the oil pan 100. The oil 120 inside the oil pan 100 is drawn up through the strainer 110 by the oil pump (not shown) and used in various parts of the vehicle 2. The oil 120 after use is configured to be returned to the oil pan 100.

[0012] The strainer 110 is formed in a cylindrical shape. For example, the strainer 110 is formed in a cylindrical shape. However, it is not limited to this, and the strainer 110 may be formed in other shapes, such as a rectangular tube, an elliptical tube, or a polygonal tube. At least a portion of the strainer 110 is provided so as to be located inside the oil pan 100. The central axis of the strainer 110 extends in the vertical direction.

[0013] The strainer 110 has a first cylindrical portion 112, a second cylindrical portion 114, and a third cylindrical portion 116. In this embodiment, an example in which the first cylindrical portion 112, the second cylindrical portion 114, and the third cylindrical portion 116 are cylindrical will be described.

[0014] The first cylindrical portion 112 is provided vertically below the second cylindrical portion 114. The first cylindrical portion 112 has a constant inner diameter along the vertical direction. However, the inner diameter of the first cylindrical portion 112 may not be constant in the vertical direction and may vary.

[0015] The second cylindrical portion 114 is provided between the first cylindrical portion 112 and the third cylindrical portion 116. The central axis of the second cylindrical portion 114 is equal to the central axis of the first cylindrical portion 112 and the central axis of the third cylindrical portion 116. Here, "equal" means including the case of being exactly equal, the case of being exactly equal within the allowable error range such as machining accuracy and assembly error, and the case of deviating from these. Hereinafter, "equal" means including the case of being exactly equal, the case of being exactly equal within the allowable error range, and the case of deviating from these.

[0016] The second cylindrical portion 114 has a constant inner diameter along the vertical direction. However, the inner diameter of the second cylindrical portion 114 may not be constant in the vertical direction and may vary. The inner diameter of the second cylindrical portion 114 is larger than the inner diameter of the first cylindrical portion 112. Also, the inner diameter of the second cylindrical portion 114 is larger than the inner diameter of the third cylindrical portion 116.

[0017] The third cylindrical portion 116 is provided vertically above the second cylindrical portion 114. The third cylindrical portion 116 has a constant inner diameter along the vertical direction. However, the inner diameter of the third cylindrical portion 116 may not be constant in the vertical direction and may vary. The inner diameter of the third cylindrical portion 116 is smaller than the inner diameter of the second cylindrical portion 114. Also, the inner diameter of the third cylindrical portion 116 is equal to the inner diameter of the first cylindrical portion 112. However, it is not limited to this, and the inner diameter of the third cylindrical portion 116 may be smaller or larger than the inner diameter of the first cylindrical portion 112.

[0018] The first cylindrical portion 112, the second cylindrical portion 114, and the third cylindrical portion 116 are continuous in the central axis direction. Therefore, the internal spaces of the first cylindrical portion 112, the second cylindrical portion 114, and the third cylindrical portion 116 communicate with each other in the central axis direction. The lower end in the vertical direction of the first cylindrical portion 112 is one end 112a of the strainer 110, and the upper end in the vertical direction of the third cylindrical portion 116 is the other end 116a of the strainer 110.

[0019] One end 112a of the strainer 110 is immersed in the oil 120 stored in the oil pan 100. That is, one end 112a of the strainer 110 is located vertically below the liquid level of the oil 120. The other end 116a of the strainer 110 is located outside the oil pan 100.

[0020] The other end 116a of the strainer 110 is connected to, for example, an inlet of an oil pump (not shown). The outlet of the oil pump is connected to an oil supply pipe for lubricating or cooling each part of the vehicle 2.

[0021] The oil pump is driven by, for example, the power of an engine mounted on the vehicle 2. However, it is not limited thereto, and the oil pump may be driven by, for example, the power of a motor mounted on the vehicle 2. The oil pump sucks up the oil 120 stored in the oil pan 100 through the strainer 110. The oil pump discharges the sucked-up oil 120 into the oil supply pipe, thereby supplying the oil 120 to each part of the vehicle 2 through the oil supply pipe.

[0022] When the oil pump is not driven, the oil 120 stored in the oil pan 100 is not sucked up, so the flow of the oil 120 inside the strainer 110 does not occur.

[0023] The foreign matter removing device 200 includes a housing case 210, a collecting member 220, a driving device 230, a contact member 240, and a control device 300.

[0024] The housing case 210 is a hollow container capable of storing the foreign matter 400. The housing case 210 is detachably connected to the strainer 110. In the example shown in FIG. 1, the housing case 210 is detachably connected to the first side wall 118 of the second cylindrical portion 114 of the strainer 110.

[0025] The housing case 210 has a second side wall 212 for connecting to the first side wall 118 of the second cylindrical portion 114. The outer surface shape of the second side wall 212 is formed to correspond to the outer surface shape of the first side wall 118 of the second cylindrical portion 114. Specifically, the outer surface shape of the first side wall 118 is a curved shape that protrudes radially outward from the second cylindrical portion 114, and the outer surface shape of the second side wall 212 is a curved shape that is recessed inward from the housing case 210. By having the outer surface shape of the second side wall 212 correspond to the outer surface shape of the first side wall 118, the outer surface of the second cylindrical portion 114 and the outer surface of the housing case 210 can be brought into close contact.

[0026] Furthermore, a first opening 118a is formed in the first side wall 118 of the second cylindrical portion 114, penetrating both the inner and outer surfaces. On the other hand, a second opening 212a is formed in the second side wall 212 of the housing case 210, penetrating both the inner and outer surfaces. The second opening 212a is provided in a position that communicates with the first opening 118a.

[0027] The vertical width of the first opening 118a is equal to the vertical width of the second opening 212a. The vertical width of the first opening 118a and the second opening 212a is greater than the sum of the vertical thickness of the collection member 220 and the vertical thickness of the foreign matter 400. In other words, the first opening 118a and the second opening 212a are configured to allow the collection member 220, which has collected the foreign matter 400, to pass through.

[0028] The collection member 220 is a filter formed in a mesh-like structure using, for example, a metal material or a plastic material. The mesh size of the filter is smaller than the size of the foreign matter 400. In this way, the collection member 220 is configured to collect foreign matter 400 contained in the oil 120 flowing through the strainer 110. The collection member 220 restricts the flow of foreign matter 400 contained in the oil 120 as the oil 120 flows through the inside of the strainer 110.

[0029] The drive unit 230 is an electric, pneumatic, or hydraulic actuator capable of driving the collection member 220. The drive unit 230 is installed in the housing case 210. The drive unit 230 drives the collection member 220 to a protruding position where it protrudes into the strainer 110 and to a retracted position where it retracts from inside the strainer 110 into the housing case 210.

[0030] Figure 2 is a schematic diagram showing the state in which the collecting member 220 is driven to the retracted position in the foreign matter removal device 200 according to this embodiment. Here, the position of the collecting member 220 shown in Figure 1 is the protruding position. The position of the collecting member 220 shown in Figure 2 is the retracted position. Hereafter, the protruding position in which the collecting member 220 is extended will also be simply referred to as the first position. The retracted position in which the collecting member 220 is retracted will also be simply referred to as the second position.

[0031] As shown in Figures 1 and 2, the drive unit 230 drives the collection member 220 between a first position and a second position via the first opening 118a and the second opening 212a. The first opening 118a is formed in the strainer 110 and the second opening 212a is formed in the housing case 210, allowing the collection member 220 to protrude into the strainer 110 or retract into the housing case 210. In the first position, the tip of the collection member 220 abuts against the inner wall of the second cylindrical portion 114. The collection member 220 in the first position can contact the oil 120 throughout the entire cross-sectional area of ​​the flow path within the second cylindrical portion 114. Therefore, the collection member 220 in the first position can collect foreign matter 400 contained in the oil 120 throughout the entire cross-sectional area of ​​the flow path within the second cylindrical portion 114. Furthermore, the tip of the collection member 220 is located inside the housing case 210 in the second position.

[0032] The contact member 240 is, for example, a flat plate-shaped member. The contact member 240 is provided vertically below the collection member 220. In this embodiment, the contact member 240 is attached to the drive unit 230. However, it is not limited to this, and the contact member 240 may also be attached to the housing case 210.

[0033] The contact member 240 is provided so as to be able to come into contact with the foreign matter 400 collected by the collection member 220 when the drive device 230 drives the collection member 220 from the first position to the second position. As a result, the contact member 240 comes into contact with the foreign matter 400 collected by the collection member 220, causing the foreign matter 400 collected by the collection member 220 to fall vertically downward. In this embodiment, the contact member 240 is in contact with the collection member 220. However, it is not limited to this, and the contact member 240 does not have to be in contact with the collection member 220. Specifically, a small gap may be provided between the contact member 240 and the collection member 220. In that case, the size of the gap between the contact member 240 and the collection member 220 is smaller than the vertical thickness of the foreign matter 400. Specifically, the gap between the contact member 240 and the collection member 220 is smaller than, for example, the gap between the collection member 220 and the lower ends of the first opening 118a and the second opening 212a.

[0034] The internal space of the storage case 210 is formed with a foreign matter storage section 250 for storing foreign matter 400 that has fallen due to the contact member 240 or its own weight. The foreign matter storage section 250 is a space in which foreign matter 400 that has been collected by the collection member 220 and fallen into the storage case 210 is stored. The foreign matter storage section 250 is, for example, the space vertically below the second opening 212a within the internal space of the storage case 210.

[0035] A partition wall 260 is provided between the foreign matter storage section 250 and the strainer 110. The partition wall 260 is configured as part of the second side wall 212 of the containment case 210 and restricts the movement of foreign matter 400 stored in the foreign matter storage section 250 towards the strainer 110.

[0036] Figure 3 is a block diagram showing an example of the configuration of the control device 300 according to this embodiment. The control device 300 controls the entire vehicle 2. The control device 300 also controls the drive unit 230. As shown in Figure 3, the control device 300 includes an I / F 310, a storage device 320, a system bus 330, one or more processors 340, and one or more memories 350. The I / F 310 is an interface for communicating with the drive unit 230 and the differential pressure sensor 500. For example, the I / F 310 acquires information transmitted from the differential pressure sensor 500. The differential pressure sensor 500 detects, for example, the differential pressure between the pressure inside the first cylindrical portion 112 of the strainer 110 and the pressure inside the third cylindrical portion 116. In other words, the differential pressure sensor 500 detects the differential pressure between the pressure on one end 112a and the pressure on the other end 116a with respect to the collection member 220 inside the strainer 110. The differential pressure sensor 500 then transmits information about the detected differential pressure to the control device 300. The I / F 310 also transmits a control signal to the drive unit 230.

[0037] The storage device 320 consists of RAM, flash memory, HDD, etc., and holds various information necessary for the processing of the processor 340 as described below. The system bus 330 is a transmission path that electrically connects the I / F 310, storage device 320, processor 340, and memory 350, and transmits data between them.

[0038] The processor 340 includes, for example, a CPU (Central Processing Unit). The memory 350 includes, for example, ROM (Read Only Memory) and RAM (Random Access Memory). ROM is a memory element that stores programs and arithmetic parameters used by the CPU. RAM is a memory element that temporarily stores data such as variables and parameters used in processing performed by the CPU.

[0039] Figure 4 is a block diagram showing an example of the functional configuration of the control device 300 according to this embodiment. For example, as shown in Figure 4, the control device 300 includes an acquisition unit 300a and a control unit 300b.

[0040] The processor 340 works in cooperation with the program contained in the memory 350 and executes the program contained in the memory 350 to realize various processes, including the processes described below, which are performed by the acquisition unit 300a and the control unit 300b.

[0041] The acquisition unit 300a acquires information regarding differential pressure from the differential pressure sensor 500. The acquisition unit 300a also acquires information regarding the engine's operation. This information includes, for example, information indicating that the engine is running and information indicating that the engine is stopped.

[0042] For example, the engine speed can be derived using a crank angle sensor. Therefore, the acquisition unit 300a acquires the output of the crank angle sensor, and if the engine speed derived based on that output is less than or equal to a predetermined speed, it determines that it has acquired information indicating that the engine is stopped. Here, the predetermined speed is, for example, 0. Also, if the engine speed derived based on the output of the crank angle sensor is greater than the predetermined speed, the acquisition unit 300a determines that it has acquired information indicating that the engine is running.

[0043] The control unit 300b controls the drive unit 230 so that the collection member 220 is positioned in a first position when the engine is running, and controls the drive unit 230 so that the collection member 220 is positioned in a second position when the engine is stopped. Details of the control processes performed by this control unit 300b will be described later.

[0044] By the way, if the oil 120 contains a large amount of foreign matter 400, even if a collection member 220 is placed inside the strainer 110, the foreign matter 400 will accumulate in the collection member 220 and cause clogging. If the collection member 220 becomes clogged, the flow of oil will be obstructed by the foreign matter 400, which may impair the function of the oil pump.

[0045] Therefore, the foreign matter removal device 200 of this embodiment includes a drive device 230 for driving the collection member 220 in order to remove the foreign matter 400 accumulated in the collection member 220. The drive device 230 drives the collection member 220 to a first position in which it protrudes into the strainer 110, and to a second position in which it retracts from inside the strainer 110 into the storage case 210. The foreign matter 400 collected by the collection member 220 falls into the foreign matter storage section 250 inside the storage case 210 due to vibrations generated when the drive device 230 drives the collection member 220 from the first position to the second position, and due to its own weight. As a result, the foreign matter 400 collected by the collection member 220 can be removed inside the storage case 210.

[0046] Furthermore, the containment case 210 is detachably attached to the strainer 110. This allows the foreign matter 400 removed from the containment case 210 to be easily discharged outside the vehicle. As a result, it is possible to suppress the accumulation of foreign matter 400 in the collection member 220 while also suppressing the accumulation of foreign matter 400 in the containment case 210. The control processing by the control unit 300b that controls the drive unit 230 will be described in detail below.

[0047] Figure 5 is a flowchart illustrating an example of the control process performed by the control unit 300b. As shown in Figure 5, the acquisition unit 300a acquires information regarding the differential pressure of the strainer 110 from the differential pressure sensor 500. The acquisition unit 300a also acquires information regarding the engine's operation (S100).

[0048] Based on the acquired differential pressure information, the control unit 300b determines whether the differential pressure between one end 112a and the other end 116a of the collection member 220 in the strainer 110 is greater than or equal to a threshold (S102). Here, the threshold is the differential pressure value detected when foreign matter 400 accumulates in the collection member 220 provided in the strainer 110 and causes clogging. If the differential pressure is not greater than or equal to the threshold (NO in S102), the control unit 300b terminates the control process.

[0049] On the other hand, if the differential pressure is above a threshold (YES in S102), the control unit 300b changes the flag indicating that clogging has occurred in the collection member 220 from the OFF state to the ON state (S104). Information indicating the state of this flag is stored in the memory device 320. If the flag was in the ON state, the control unit 300b maintains the ON state of the flag. Then, the control unit 300b determines whether the engine is stopped or not based on the acquired information regarding the engine's operation (S106). At this time, the control unit 300b also refers to the information stored in the memory device 320 and determines whether the flag is in the ON state or not. If the flag is in the OFF state, or if the engine is not stopped (NO in S106), the control unit 300b terminates the control process.

[0050] On the other hand, if the flag is ON and the engine is stopped (YES in S106), the control unit 300b performs drive control to drive the drive unit 230 to move the collection member 220 from the first position to the second position (S108). This drive control may be performed multiple times or only once. After the drive control in S108, the control unit 300b changes the flag from the ON state to the OFF state (S110) and terminates the control process.

[0051] As described above, the foreign matter removal device 200 of this embodiment includes a drive device 230 that drives the collection member 220 to a first position in which it protrudes into the strainer 110, and to a second position in which it retracts from inside the strainer 110 into the storage case 210. When the collection member 220 moves from the first position to the second position, the foreign matter 400 collected by the collection member 220 falls vertically downward into the storage case 210 and is stored in the foreign matter storage section 250 inside the storage case 210. The storage case 210 is also detachably connected to the strainer 110. This allows the foreign matter 400 stored in the foreign matter storage section 250 inside the storage case 210 to be easily discharged outside the vehicle 2. Therefore, even if the oil 120 contains a large amount of foreign matter 400, the accumulation of foreign matter 400 in the collection member 220 is suppressed, and as a result, clogging of the collection member 220 can be suppressed.

[0052] Furthermore, the drive unit 230 is provided with a contact member 240. The contact member 240 comes into contact with the foreign matter 400 collected by the collection member 220 when the collection member 220 is driven from the first position to the second position. Therefore, it is possible to easily remove the foreign matter 400 adhering to the collection member 220.

[0053] Furthermore, a partition wall 260 is provided in the containment case 210. The partition wall 260 is provided between the foreign matter storage section 250, which stores foreign matter 400, and the strainer 110. The partition wall 260 restricts the movement of foreign matter 400 from the foreign matter storage section 250 towards the strainer 110. This prevents foreign matter 400, which is collected by the collection member 220 and stored in the foreign matter storage section 250, from moving through the strainer 110 to the oil pan 100 or to various parts of the vehicle 2 through the oil pump.

[0054] Furthermore, the control unit 300b controls the drive unit 230 so that the collection member 220 is positioned in a first position when the engine is running, and controls the drive unit 230 so that the collection member 220 moves from the first position to a second position when the engine is stopped. As a result, when the collection member 220 is in the second position, the oil 120 containing foreign matter 400 is transported to various parts of the vehicle 2 through the strainer 110, thereby preventing the foreign matter 400 from reaching various parts of the vehicle 2.

[0055] Furthermore, the drive unit 230 drives the collection member 220 between a first position and a second position via the first opening 118a of the strainer 110 and the second opening 212a of the housing case 210. The provision of the first opening 118a and the second opening 212a allows the collection member 220 to be moved to either the first position, which is the protruding position, or the second position, which is the retracted position.

[0056] Embodiments of the present invention have been described above with reference to the attached drawings, but it goes without saying that the present invention is not limited to these embodiments. It is clear to those skilled in the art that various modifications or alterations can be conceived within the scope of the claims, and these will naturally also fall within the technical scope of the present invention.

[0057] In the above embodiment, an example was described in which a process is performed to determine whether the differential pressure is above a threshold, as shown in S102 in Figure 5. However, the control unit 300b does not have to perform the process of determining whether the differential pressure is above a threshold, as shown in S102 in Figure 5. In other words, the processes S102, S104, and S110 in Figure 5 may be omitted. In that case, the control unit 300b only performs a determination of whether the engine is stopped, and if the engine is stopped, it performs drive control to drive the drive device 230 to move the collection member 220 from the first position to the second position. Furthermore, in the above embodiment, an example was described in which a differential pressure sensor 500 is provided on the strainer 110. However, the control unit 300b does not have to perform the process of determining whether the differential pressure is above a threshold, as shown in S102 in Figure 5.

[0058] In the above embodiment, an example was described in which the collection member 220 is driven from the first position to the second position when the engine is stopped. However, the control unit 300b may also drive the collection member 220 from the first position to the second position when the engine is running.

[0059] In the above embodiment, an example was described in which a contact member 240 is provided in the foreign matter removal device 200. However, the contact member 240 is not an essential component. Therefore, the foreign matter removal device 200 does not need to be provided with a contact member 240.

[0060] In the above embodiment, an example was described in which a partition wall 260 is provided in the storage case 210. However, the partition wall 260 is not an essential component. Therefore, the storage case 210 does not need to be provided with a partition wall 260. [Explanation of symbols]

[0061] 110 Strainer 112 First cylinder part 112a one end 114 Second cylinder part 116 Third tube part 116a Other end 118 First side wall 118a 1st opening 120 Oil 200 Foreign matter removal device 210 storage cases 212 Second side wall 212a 2nd opening 220 Collection member 230 Drive unit 240 Contact Member 250 Foreign Matter Storage Section 260 Bulkhead 300 Control device 400 Foreign object 500 Differential Pressure Sensor

Claims

1. A housing case that is detachably connected to the strainer, A drive device is provided in the aforementioned containment case and drives a collection member capable of collecting foreign matter contained in the oil flowing through the strainer, Equipped with, The drive device drives the collection member to a first position in which it protrudes into the strainer, and to a second position in which it retracts the collection member from inside the strainer into the housing case. Foreign matter removal device.

2. The drive device is provided with a contact member that can come into contact with the foreign matter collected by the collection member when the collection member is driven from the first position to the second position. The foreign matter removal device according to claim 1.

3. The aforementioned containment case has a foreign matter storage section for storing the foreign matter, and a partition wall is provided between the foreign matter storage section and the strainer. A foreign matter removal device according to claim 1 or 2.

4. The drive device is equipped with a control device for controlling the aforementioned drive device, The control device is It comprises one or more processors and one or more memories connected to the processors, The aforementioned processor, The drive unit is controlled so that the collecting member is positioned in the first position when the engine is running, and the drive unit is controlled so that the collecting member moves from the first position to the second position when the engine is stopped. A foreign matter removal device according to claim 1 or 2.

5. The strainer has a first opening formed therein. The aforementioned housing case has a second opening that communicates with the first opening. The drive device drives the collection member between the first position and the second position through the first and second openings. A foreign matter removal device according to claim 1 or 2.

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