JP2015153559A - Electric wire module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire module capable of performing air cooling of an electric wire.SOLUTION: A cylindrical member 3 has a cylindrical shape which surrounds at least part of a longitudinal direction of an electric wire 2 via a gap, and a space between a first end 3a of the cylindrical shape and the electric wire 2 is closed. The cylindrical member 3 has an opening for ventilation (a second end 3b, for example) on a position closer to the second end 3b than the first end 3a. A tube 4 for ventilation has a first opening end 4a opening and positioned in an inner space, and a second opening end 4b opening and positioned in an outer space, and the tube for ventilation penetrates the opening for ventilation.

Description

  The present invention relates to an electric wire module, and more particularly, to an electric wire module having an electric wire and a cylindrical member surrounding the electric wire.

  In a vehicle (for example, an automobile), a device provided outside the vehicle (for example, an inverter for driving a vehicle motor), a device provided in the vehicle (for example, a battery for applying a DC voltage to the inverter), and the devices for connecting the devices An electric wire may be provided.

  Such an electric wire is surrounded by a cylindrical member outside the vehicle. In other words, the electric wire penetrates the cylindrical member along the longitudinal direction. Thereby, an electric wire can be protected, for example, or wiring can be held and its routing form can be maintained. Further, the tubular member prevents water from entering the electric wire outside the vehicle.

  Further, Patent Documents 1 and 2 are listed as techniques related to the present invention.

JP 2007-1454 A JP 2007-8423 A

  If the temperature of the electric wire rises, the resistance value of the electric wire increases, which is not desirable. Therefore, it is desirable to cool the electric wire.

  Then, an object of this invention is to provide the electric wire module which can air-cool an electric wire.

  1st aspect of the electric wire module concerning this invention has an electric wire, a 1st end and a 2nd end, is formed in the cylinder shape surrounding at least one part of the said electric wire, and the said 1st end and the said electric wire A cylindrical member in which a gap is closed and an opening for ventilation is formed at a position closer to the second end than the first end, and a first opening end that is positioned and opened in the internal space of the cylindrical member And a ventilating tube that has a second opening end that is located in the outer space of the cylindrical member and opens, and passes through the ventilating opening.

  The 2nd aspect of the electric wire module concerning this invention is an electric wire module concerning a 1st aspect, Comprising: The said 2nd end of the said cylindrical member is opening, The said opening for ventilation in the said cylindrical member Is the opening at the second end.

  The 3rd aspect of the electric wire module concerning this invention is an electric wire module concerning the 1st or 2nd aspect, Comprising: The said 1st opening end is a said 1st end rather than the said 2nd end in the said cylindrical member. Close to.

  A fourth aspect of the electric wire module according to the present invention is the electric wire module according to any one of the first to third aspects, wherein the ventilation tube includes the first opening end and the second opening end. The main body pipe at the branch section between the first open end and the second open end, and the main pipe section through which air flows from the second open end to the first open end. A third opening end that is an end opposite to the branching portion opens, and air flows from the third opening end to the branching portion due to the flow of air in the main body tube portion. A flowing branch pipe part.

  The 5th aspect of the electric wire module concerning this invention is an electric wire module concerning a 4th aspect, Comprising: The said 3rd opening end is located in the said internal space of the said cylindrical member.

  The 6th aspect of the electric wire module concerning this invention is an electric wire module concerning a 5th aspect, Comprising: The said 3rd opening end opens to the said 1st opening end side in the longitudinal direction of the said cylindrical member. Further, the ventilation tube is arranged.

  The 7th aspect of the electric wire module concerning this invention is an electric wire module concerning a 4th aspect, Comprising: The said 3rd opening end is located in the said external space of the said cylindrical member.

  The 8th aspect of the electric wire module concerning this invention is an electric wire module concerning the 1st to 3rd aspect, Comprising: The said ventilation tube is the 3rd opening end located in the said external space of the said cylindrical member, A main body pipe portion that connects the second opening end and communicates with the air blower from the second opening end to the third opening end, and a branch between the second opening end and the third opening end And a branch pipe part through which air flows from the first opening end to the branch part due to the flow of air in the main body pipe part.

  A ninth aspect of the electric wire module according to the present invention is the electric wire module according to any one of the first to eighth aspects, wherein the electric wire and the ventilation tube are bound by a binding tool.

  A tenth aspect of an electric wire module according to the present invention is an electric wire module mounted on a vehicle including a first device mounted outside the vehicle, and a second device and an air blower both mounted in the vehicle. An electric wire connecting the first device and the second device, a first end and a second end, and formed in a cylindrical shape surrounding at least a part of the electric wire, Between the electric wire is closed outside the vehicle, a cylindrical member in which an opening for ventilation is formed in the vehicle, a first opening end located in the internal space of the cylindrical member, and the inside of the vehicle And a ventilation tube having a second opening end communicating with the blower and penetrating through the ventilation opening.

  According to the 1st aspect of the electric wire module concerning this invention, air can be sent into the internal space of a cylindrical member via the tube for ventilation. At this time, the air sent from the ventilation tube to the internal space of the cylindrical member flows through the internal space of the cylindrical member, and is sent to the external space through, for example, an opening. Thereby, the electric wire in a cylindrical member can be air-cooled.

  And since air is sent into a cylindrical member using the ventilation tube, the opening for ventilation in a cylindrical member can be provided in the position different from the position where cooling and waterproofing are required. That is, it is not necessary to provide a vent in a position where cooling and waterproofing are required in the cylindrical member. Thereby, an electric wire can be air-cooled, without impairing the waterproof performance of a cylindrical member.

  According to the 2nd aspect of the electric wire module concerning this invention, it is easier to manufacture the cylindrical member with which the 2nd end opened than manufacturing the cylindrical member with which the 2nd end and the electric wire were obstruct | occluded. It is. And since the opening for ventilation is formed by the 2nd end, it is not necessary to form this opening separately. Therefore, manufacture can be further facilitated. These contribute to the reduction of manufacturing costs.

  According to the 3rd aspect of the electric wire module concerning this invention, since the 1st end of a cylindrical member is obstruct | occluded, it is easy to make air flow on the 1st end side, where air tends to stay. Therefore, it is possible to efficiently cool the electric wire on the first end side where the temperature is likely to increase.

  According to the 4th aspect of the electric wire module concerning this invention, the quantity of the air which flows through the internal space of a cylindrical member can be increased. Thereby, the electric wire in a cylindrical member can be cooled efficiently.

  According to the fifth aspect of the electric wire module of the present invention, a part of the air that flows from the first opening end and flows through the internal space is again sent from the first opening end through the third opening end. Thereby, a part of the air flowing through the internal space can be circulated in the internal space. Therefore, the amount of air flowing out from the internal space of the cylindrical member to the external space is reduced, and measures against wind noise at the air outflow portion of the cylindrical member are facilitated.

  According to the sixth aspect of the electric wire module of the present invention, the circulation rate can be increased.

  According to the seventh aspect of the electric wire module of the present invention, the amount of air sent from the external space to the internal space can be increased. Thereby, the electric wire in a cylindrical member can be cooled efficiently.

  According to the eighth aspect of the electric wire module of the present invention, as air flows through the branch pipe portion from the first opening end to the branch portion, the air in the external space passes, for example, through the ventilation opening. Flow into the internal space of the tubular member. Therefore, for example, the electric wire can be air-cooled using air in the external space around the opening for ventilation. This is particularly effective when the temperature of the air around the ventilation opening is lower than the temperature of the air around the second opening end.

  According to the ninth aspect of the electric wire module of the present invention, the electric wire and the ventilation tube can be handled integrally and inserted into the cylindrical member.

  According to the 10th aspect of the electric wire module concerning this invention, the electric wire 2 can be air-cooled. And since the opening for ventilation is located in a vehicle, compared with the case where the said opening is arrange | positioned outside a vehicle, it can prevent that a water drop or dust outside a vehicle penetrate | invades a cylindrical member via the said opening.

It is a typical block diagram which shows the cross section of a vehicle. It is a notional block diagram which shows an example of an electric wire module concretely. It is a figure which shows an example of an electric wire module typically. It is a notional block diagram which shows an example of an electric wire module concretely. It is a notional block diagram which shows an example of an electric wire module concretely. It is a figure which shows an example of an electric wire module typically. It is a figure which shows an example of an electric wire module typically. It is a figure which shows an example of an electric wire module typically.

First embodiment.
<1. Overall configuration>
FIG. 1 conceptually shows a side surface of a vehicle (for example, an automobile) 100 on which the electric wire module 1 is mounted. The vehicle 100 naturally has a configuration required for traveling (for example, a wheel and a steering mechanism for operating the traveling direction of the vehicle), but in FIG. 1, components that are not related to the present application are omitted. doing.

  The traveling motor 110 and the driving device 120 are arranged outside the vehicle partitioned by the vehicle body panel 130. In the illustration of FIG. 1, these are arranged in front of the traveling direction of the vehicle 100. The traveling motor 110 is a motor for rotating the wheels. The driving device 120 is an inverter, for example, and drives the traveling motor 110.

  In the illustration of FIG. 1, a power supply device (for example, a battery) 140 for providing DC power to the drive device 120 is disposed behind the automobile. The power supply device 140 is disposed in a vehicle partitioned by the vehicle body panel 130.

  In the illustration of FIG. 1, a blower (fan) 150 is also provided. The fan 150 is provided in the vehicle, for example, blows air to the power supply device 140 to cool the power supply device 140.

<2. Electric wire module>
FIG. 2 is a conceptual enlarged view showing an example of the electric wire module 1 more specifically. The electric wire module 1 includes an electric wire 2, a tubular member 3, and a ventilation tube 4.

  The electric wire 2 connects the driving device 120 and the power supply device 140 to each other (see also FIG. 1). As described above, the drive device 120 and the power supply device 140 are respectively disposed outside and inside the vehicle partitioned by the vehicle body panel 130, so that the electric wire 2 passes through the vehicle body panel 130.

  The electric wire 2 may be an arbitrary electric wire, for example, a stranded wire in which a plurality of core wires (linear conductors) are bundled, or a single wire. Referring also to FIG. 1, for example, connectors 21 and 22 are formed at both ends of the electric wire 2, and the electric wire 2 is electrically connected to the driving device 120 and the power supply device 140 via the connectors 21 and 22, respectively. .

  The cylindrical member 3 is formed in a cylindrical shape and surrounds at least a part of the electric wire 2. In other words, the electric wire 2 loosely inserts the tubular member 3 along the longitudinal direction.

  The tubular member 3 penetrates the vehicle body panel 130. The tubular member 3 and the vehicle body panel 130 are in close contact with each other at the penetrating portion. That is, the periphery of the through hole 131 (see FIG. 2) of the vehicle body panel 130 is in close contact with the outer peripheral surface of the cylindrical member 3. Alternatively, the gap between the peripheral edge of the through hole 131 of the vehicle body panel 130 and the outer peripheral surface of the cylindrical member 3 may be sealed with a predetermined seal member (not shown). The seal member is formed of, for example, rubber, silicon or resin. Thereby, it can avoid that a clearance gap arises between the vehicle body panel 130 and the cylindrical member 3, and it can avoid that the inside and outside of a vehicle communicate with each other via the clearance gap by extension.

  In the illustration of FIG. 2, the tubular member 3 is routed in the front-rear direction at the lower part of the vehicle body panel 130 forming the floor plate, and extends obliquely upward on the first end 3 a side to the drive device 120. Head. The tubular member 3 is bent upward on the second end 3b side and penetrates the vehicle body panel 130.

  As shown in FIG. 2, the tubular member 3 may protrude through the vehicle interior side from the vehicle body panel 130, and the second end 3 b may be located at the vehicle interior side from the vehicle body panel 130, or the second end 3 b. May contact the body panel 130.

  The second end 3b is open in the vehicle. The electric wire 2 is drawn out via the second end 3b and extends to the power supply device 140 arranged in the vehicle.

  The space between the first end 3a of the cylindrical member 3 and the electric wire 2 is closed. For example, the gap between the first end 3a of the cylindrical member 3 and the connector 21 of the electric wire 2 is sealed with a seal member (not shown), so that the first end 3a of the cylindrical member 3 and the electric wire 2 are fixed to each other. The Thereby, the space between the first end 3a and the electric wire 2 is closed. The seal member is formed of, for example, rubber, silicon or resin.

  Thus, since the 1st end 3a is obstruct | occluded, it can prevent that the water drop or dust outside a vehicle penetrate | invades into the inside of the cylindrical member 3 via the 1st end 3a.

  The cylindrical member 3 is formed of, for example, a metal (for example, an aluminum alloy, a copper alloy, or stainless steel). The tubular member 3 can protect the electric wire 2 or can hold the electric wire 2 and maintain its routing shape. Or when the cylindrical member 3 is formed with conductors, such as a metal as mentioned above, the electric wire 2 can be shielded.

  It is desirable that no hole is formed in the tubular member 3 outside the vehicle. Thereby, the space outside the vehicle and the internal space of the cylindrical member 3 do not communicate directly. Therefore, water droplets or dust outside the vehicle can be prevented from entering the inside of the cylindrical member 3.

  In addition, the one electric wire 2 may be inserted in the cylindrical member 3, and the several electric wire 2 may be inserted.

  The ventilation tube 4 has a cylindrical shape, and both ends thereof are open. Therefore, below, the both ends of the ventilation tube 4 are also called open ends 4a and 4b, respectively. The ventilation tube 4 is for sending air into the cylindrical member 3 as will be described in detail later.

  The ventilation tube 4 is formed of, for example, an elastic material (for example, rubber or silicon) and has flexibility. In the illustration of FIG. 2, the ventilation tube 4 is loosely inserted into the cylindrical member 3 through the second end 3b. Therefore, the 2nd end 3b can be grasped | ascertained as the opening for ventilation for inserting the tube 4 for ventilation. In the illustration of FIG. 2, the tubular member 3 has a portion that bends in the middle of its extension. If the ventilation tube 4 is formed of an elastic material, the tubular member 3 bends along the extending path of the tubular member 3. However, it can be inserted into the internal space of the cylindrical member 3.

  Further, if the ventilation tube 4 is formed of an elastic material and has flexibility, the ventilation tube 4 is commonly used for a plurality of types of cylindrical members 3 having different extending paths. be able to. This contributes to a reduction in manufacturing cost.

  The opening end 4a of the ventilation tube 4 is located in the internal space of the tubular member 3, and the opening end 4b of the ventilation tube 4 is located in the external space of the tubular member 3 (more specifically, in the vehicle). The open end 4b is provided at a position in the vehicle that receives air from the fan 150. More specifically, the opening end 4b is disposed so as to open on the opposite side with respect to the blowing direction. In other words, the open end 4 b communicates with the fan 150.

  Unlike FIG. 2, the opening end 4 b may have a shape whose diameter increases as it approaches the fan 150. Thereby, it is easy to send the air from the fan 150 into the inside of the ventilation tube 4 through the opening end 4b.

  The internal space of the cylindrical member 3 has a volume such that a gap is formed even when both the ventilation tube 4 and the electric wire 2 are inserted. Further, this gap continues from the first end 3a to the second end 3b.

  FIG. 3 is a diagram schematically showing the electric wire module 1. In the illustration of FIG. 3, two electric wires 2 are illustrated, and the electric wires 2, the cylindrical member 3, and the ventilation tube 4 extend linearly without being curved. Actually, it may be appropriately curved as illustrated in FIG. In the illustration of FIG. 3, a seal member 30 that seals between the tubular member 3 and the electric wire 2 is also shown. In the illustration of FIG. 3, the seal member 30 seals between the connector 21 and the tubular member 3. In addition, you may grasp | ascertain a pair of the cylindrical member 3 and the sealing member 30 as a cylindrical member.

  With reference to FIG. 2, in the electric wire module 1, when the fan 150 operates, the air in the vehicle flows into the ventilation tube 4 through the opening end 4b. This air flows through the ventilation tube 4 toward the opening end 4a. The air sent from the open end 4 a flows, for example, inside the cylindrical member 3 toward the connector 21. Then, the air bounces off at the connector 21 and flows inside the cylindrical member 3 (more specifically, outside the ventilation tube 4 in the inside) toward the second end 3b, and from the second end 3b to the inside of the vehicle Is sent to.

  As described above, the second end 3b functions as the outlet while the ventilation tube 4 functions as the inlet to the cylindrical member 3. Thereby, even if it is the cylindrical member 3 with which the 1st end 3a was block | closed, air flows through the inside of the cylindrical member 3 as mentioned above, and the electric wire 2 can be air-cooled.

  Now, assuming a structure in which the ventilation tube 4 is not provided, the air on the first end 3a (connector 21) side tends to stay inside the cylindrical member 3 with the first end 3a closed. Therefore, heat is accumulated and the temperature of the electric wire 2 on the first end 3a side is likely to increase.

  1 and 2, the connector 21 is connected to the drive device 120 (FIG. 1). However, the drive device 120 or the engine (not shown) provided in front of the vehicle is another device. Generates relatively more heat than Therefore, the temperature of the first end 3a side of the electric wire 2 is likely to be higher than the temperature of the second end 3b side.

  Therefore, it is desirable to air-cool the electric wire 2 on the first end 3a side where the temperature is likely to rise more efficiently.

  Therefore, in the illustration of FIG. 2, the opening end 4 a of the ventilation tube 4 is disposed at a position closer to the first end 3 a than the second end 3 b of the cylindrical member 3. As a more specific example, the opening end 4a is located in the vicinity of the first end 3a. Thereby, in the inside of the cylindrical member 3, air can be easily sent to the 1st end 3a side, and the electric wire 2 by the side of the 1st end 3a can be cooled more efficiently.

  In addition, as illustrated in FIG. 2, when the opening end 4 a is open on the connector 21 (one end of the electric wire 2) side in the longitudinal direction of the tubular member 3, the first end is compared to the case where the opening end 4 a is open on the opposite side. It is easy to deliver air to the end 3a side. Thereby, the part by the side of the 1st end 3a among the electric wires 2 can be air-cooled more efficiently.

  In the example of FIG. 1, the opening end 4 b of the ventilation tube 4 is provided at a position that receives air from the fan 150. That is, air is sent into the ventilation tube 4 by the fan 150. Thus, for example, the air in the ventilation tube 4 may be drawn out by the fan 150 by providing the opening end 4 b of the ventilation tube 4 on the opposite side (suction side) of the fan 150. Alternatively, instead of the fan 150, a suction device that sucks air may be provided, and the air in the ventilation tube 4 may be pulled out by the suction device.

  In these cases, the flow of air inside the cylindrical member 3 is opposite to the flow shown in FIG. That is, the air in the vehicle flows from the second end 3b to the inside of the cylindrical member 3 (more specifically, outside the ventilation tube 4 in the inside), and the inside of the ventilation tube 4 from the opening end 4a to the opening end. Will flow to 4b. Thereby, the electric wire 2 is air-cooled.

  In addition, in this case, the air around the second end 3 b flows into the cylindrical member 3. That is, the electric wire 2 can be air-cooled using the air around the second end 3b. Therefore, this aspect is particularly effective from the viewpoint of cooling the electric wire 2 when the temperature of the air around the second end 3 b is lower than the temperature of the air around the fan 150. In addition, this aspect is particularly effective from the viewpoint of maintenance of the electric wire 2 when the amount of dust contained in the air around the second end 3b is smaller than the amount of dust contained in the air around the fan 150. .

  Of course, if the air from the fan 150 flows into the ventilation tube 4 (FIG. 2), the electric wire 2 when the temperature of the air around the fan 150 is lower than the temperature of the air around the second end 3b. It is effective from the viewpoint of cooling. Further, when the amount of dust contained in the air around the fan 150 is smaller than the amount of dust contained in the air around the second end 3b, this aspect is effective from the viewpoint of maintenance of the electric wire 2.

  In the example of FIG. 2, the ventilation tube 4 is inserted into the cylindrical member 3 through the second end 3b. However, the insertion location of the ventilation tube 4 is not limited to the second end 3b. For example, FIG. 4 is a diagram conceptually illustrating another example of the electric wire module 1. A through hole 32 is formed in the outer peripheral surface of the cylindrical member 3 at a position closer to the second end 3b side than the first end 3a (more specifically, in the vehicle). The ventilation tube 4 is loosely inserted into the cylindrical member 3 through the through hole 32. Therefore, the through hole 32 can be opened as a ventilation opening for inserting the ventilation tube 4. Even in this case, the air in the vehicle can be sent into the cylindrical member 3 through the ventilation tube 4. Then, this air flows through the inside of the cylindrical member 3 (more specifically, outside of the ventilation tube 4 in the inside), and is sent into the vehicle via the second end 3b or the through hole 32. . Therefore, the electric wire 2 can be air-cooled.

  In this case, the space between the second end 3b and the electric wire 2 may be closed. This is because the gap between the ventilation tube 4 and the through hole 32 functions as an outlet for the air flowing inside the cylindrical member 3.

  Conversely, if the second end 3b is open, the periphery of the through hole 32 may be in close contact with or sealed with the outer peripheral surface of the ventilation tube 4. This is because the second end 3 b functions as an outlet for the air flowing inside the cylindrical member 3. Alternatively, another through hole functioning as an air outlet may be provided in the cylindrical member 3 at a position closer to the second end 3b side than the first end 3a (more specifically, in the vehicle).

  On the other hand, it is easier to manufacture the cylindrical member 3 having the second end 3b opened than to manufacture the solid cylindrical member 3 in which the space between the second end 3b and the electric wire 2 is closed. In addition, in the embodiment of FIG. 2, the insertion hole is formed by the second end 3 b, so there is no need to separately form a through hole for inserting the ventilation tube 4. Therefore, manufacture can be further facilitated. These contribute to the reduction of manufacturing costs.

  Moreover, according to this electric wire module 1, the insertion port (the 2nd end 3b of FIG. 2 or the through-hole 32 of FIG. 4, the solution for a problem) of the ventilation tube 4 and the outlet (the 2nd of FIG. 2, 4) The two ends 3b, the through hole 32 in FIG. 4 or another through hole (not shown) are provided at a position closer to the second end 3b than the first end 3a of the cylindrical member 3. Therefore, it is easy to arrange the cylindrical member 3 so that the insertion port and the outlet are located in the vehicle.

  Moreover, the advantage of this electric wire module 1 can also be demonstrated as follows. That is, since the opening end 4a of the ventilation tube 4 can be provided at a position necessary for cooling and air can be sent in, the insertion port (the other end 3b in FIG. 2 or the through hole 32 in FIG. 4) is required for cooling. It can be provided at any position different from the position. Therefore, it is possible to provide an insertion port while avoiding a position requiring waterproofing (for example, outside the vehicle).

  In the above example, the electric wire 2 connects the drive device 120 outside the vehicle and the power supply device 140 inside the vehicle. However, the connection target of the electric wire 2 is not limited to the driving device 120 and the power supply device 140. The electric wire 2 should just connect the arbitrary apparatuses mounted in the exterior and the arbitrary apparatuses mounted in the vehicle.

Second embodiment.
FIG. 5 is an enlarged view conceptually showing an example of the electric wire module 1 according to the second embodiment. The electric wire module 1 illustrated in FIG. 5 is different from the electric wire module 1 according to the first embodiment in that the structure of the ventilation tube 4 is used. In the illustration of FIG. 5, the ventilation tube 4 is branched at the branching portion 4d. That is, the ventilation tube 4 includes a tube portion 42 that connects the open end 4a and the branch portion 4d, a tube portion 44 that connects the open end 4b and the branch portion 4d, and a tube portion that connects the open end 4c and the branch portion 4d. 46. The opening end 4c is an end portion on the opposite side to the branching portion 4d of the pipe portion 46, and is open.

  In the illustration of FIG. 5, the pipe portions 42 and 44 are connected to each other at an obtuse angle at the branching portion 4d. As a more detailed example, the pipe parts 42 and 44 are connected substantially linearly at the branch part 4d. In the illustration of FIG. 5, the pipe portions 44 and 46 are connected to each other at an angle of, for example, 90 degrees or less in the branch portion 4d.

  In the illustration of FIG. 5, the open end 4 c is located inside the cylindrical member 3, for example, at a position closer to the second end 3 b than the first end 3 a (more specifically, near the second end 3 b). Has been placed.

  FIG. 6 is a diagram schematically showing the electric wire module 1 of FIG. In FIG. 6, two electric wires 2 are illustrated, and the electric wires 2, the cylindrical member 3, and the ventilation tube 4 are shown extending linearly without being curved. Moreover, in FIG. 6, the sealing member 30 which seals between the cylindrical member 3 and the electric wire 2 is illustrated.

  As shown in FIG. 5, the opening end 4 b opens at a position opposite to the air blowing direction at a position where the air is received from the fan 150. Therefore, the air from the fan 150 flows through the inside of the pipe portions 44 and 42 in this order to the opening end 4a through the opening end 4b. Since air from the fan 150 flows through the pipe portions 42 and 44 in this way, in the description with reference to FIG. 6, the portion composed of the pipe portions 42 and 44 is also called a main body pipe portion, and the pipe portion 46 is also called a branch pipe portion. Call.

  Due to the air flowing inside the main body pipe portions (pipe portions 42 and 44), a negative pressure is generated in the branch portion 4d inside the main body pipe portion due to the so-called Venturi effect. Thereby, air is drawn into the inside of the branch pipe part (pipe part 46) through the opening end 4c.

  The air sent from the open end 4a to the inside of the cylindrical member 3 flows to the second end 3b, a part of which flows into the open end 4c, and again passes through the inside of the ventilation tube 4 to the open end 4a. It flows toward. Therefore, a part of air can be circulated inside the cylindrical member 3. Therefore, the amount of air flowing out from the internal space of the cylindrical member 3 to the external space is reduced, and measures against wind noise at the air outflow portion of the cylindrical member 3 are facilitated.

  Further, according to this aspect, air flows from the opening end 4 b to the ventilation tube 4, and air also flows from the opening end 4 c to the ventilation tube 4. Therefore, it is possible to increase the amount of air flowing through the pipe portion 42 and, in turn, the amount of air flowing from the open end 4a to the inside of the cylindrical member 3 (more specifically, the outside of the ventilation tube 4).

  In addition, in the pipe parts 42, 44, 46, in short, air flows from the fan 150 to the inside of the pipe parts 42, 44 (main body pipe part), and negative pressure is generated in the branch part 4d due to the flow of the air. What is necessary is just to mutually connect so that the air may flow through the inside of the pipe part 46 (branch pipe part) from the opening end 4c to the branch part 4d. For example, the pipe parts 42 and 44 are connected to each other at an obtuse angle, and the pipe part 46 is connected to the pipe part 44 at 90 degrees or less in the branch part 4d.

  In the illustration of FIG. 5, the tube portion 46 is curved and extends so that the opening end 4 c opens toward the first end 3 a side in the longitudinal direction of the tubular member 3. Here, “the first end 3 a side in the longitudinal direction of the cylindrical member 3” means a direction toward the first end 3 a side in the direction along the longitudinal direction of the cylindrical member 3. It does not mean the direction of the first end 3a viewed from the end 4c. For example, in FIG. 5, the direction of the first end 3 a viewed from the opening end 4 c is the front in the traveling direction, whereas the opening end 4 c is the first end 3 a side in the longitudinal direction of the cylindrical member 3. Opening vertically downward.

  According to this structure, it is easier to circulate air than the structure in which the opening end 4 c opens toward the second end 3 b in the longitudinal direction of the cylindrical member 3. In other words, the circulation amount can be increased.

  FIG. 7 is a diagram schematically illustrating an example of the electric wire module 1. The electric wire module 1 of FIG. 7 is different from the electric wire module 1 of FIG. 6 in that the position of the opening end 4c. In the illustration of FIG. 7, the open end 4 c is located in the external space of the cylindrical member 3. More specifically, the open end 4c is located in the vehicle.

  When the air from the fan 150 flows into the ventilation tube 4 from the opening end 4b, the air flows in this order from the opening end 4b to the opening end 4a in the tube portions 44 and 42. In addition, due to the flow of air, the air in the vehicle flows through the inside of the pipe portion 46 to the branching portion 4d through the opening end 4c. Therefore, it is possible to increase the amount of air sent from the inside of the vehicle to the inside of the cylindrical member 3 through the ventilation tube 4. Thereby, the electric wire 2 can be cooled efficiently.

  FIG. 8 is a diagram schematically illustrating an example of the electric wire module 1. The electric wire module 1 in FIG. 8 is different from the electric wire module 1 in FIG. 7 in that the angle between the tube portions 42 and 46 and the angle between the tube portions 44 and 46 are different. In the illustration of FIG. 8, the pipe portions 44 and 46 are connected to each other at an obtuse angle at the branch portion 4d. As a more detailed example, the pipe portions 44 and 46 are connected to each other substantially linearly. Moreover, the pipe part 42 is connected at 90 degrees or less with respect to the pipe part 44 in the branch part 4d, and the pipe parts 42 and 44 are shown orthogonally to each other in the illustration of FIG.

  In such a ventilation tube 4, when the air from the fan 150 flows into the inside of the pipe part 44 from the opening end 4 b, this air flows inside the pipe part 46 to the opening end 4 c via the branch part 4 d. . Since the air from the fan 150 flows through the pipe portions 44 and 46 in this way, in the embodiment of FIG. 8, the portion composed of the pipe portions 44 and 46 is also called a main body pipe portion, and the pipe portion 42 is also called a branch pipe portion.

  Then, due to the air flowing inside the main body tube portion, a negative pressure is generated in the branch portion 4d inside the main body tube portion due to the so-called Venturi effect. Thereby, the air inside the cylindrical member 3 (more specifically, the outside of the ventilation tube 4) is drawn into the inside of the pipe part 42 through the opening end 4a. Accordingly, the air in the vehicle is drawn into the cylindrical member 3 through the second end 3b. That is, the air inside the vehicle flows from the second end 3b toward the opening end 4a through the inside of the tubular member 3 (more specifically, outside the ventilation tube 4), and from the opening end 4a to the branching portion 4d. It flows through the inside of the branch pipe part (pipe part 42), then flows through the inside of the pipe part 46 to the open end 4c, and is sent out from the open end 4c into the vehicle.

  Also by this, the electric wire 2 can be air-cooled. In this embodiment, the air around the second end 3 b flows into the cylindrical member 3. Therefore, this aspect is effective in terms of air-cooling the electric wire 2 when the temperature of the air around the second end 3b is lower than the temperature of the air around the open end 4b. Alternatively, this aspect is effective in terms of maintenance of the electric wire 2 when the amount of dust contained in the air around the second end 3b is smaller than the amount of dust contained in the air around the opening end 4b. is there.

  In addition, in the aspect of FIG. 8, the pipe parts 42, 44, 46 are basically the air flowing from the fan 150 through the pipe parts 44, 46 (main body pipe part), and the branch part 4d due to the flow of the air. As long as negative pressure is generated in the pipe 42 (branch pipe) from the opening end 4a to the branch 4d, the pipes 42 (branch pipes) may be connected to each other. For example, the pipe parts 44 and 46 are connected to each other at an obtuse angle, and the pipe part 42 is connected to the pipe part 44 at 90 degrees or less at the branch part 4d.

Third embodiment.
The electric wire 2 and the ventilation tube 4 may be bound by a binding tool (for example, an adhesive tape, a binding band, etc.). Thereby, the collision with the electric wire 2 and the tube 4 for ventilation can be suppressed. Further, when the ventilation tube 4 is formed of an elastic material and has flexibility, the electric wire 2 and the ventilation tube 4 can be handled as one body and inserted into the cylindrical member 3. Thereby, assembly workability | operativity can be improved.

  The various embodiments described above can be appropriately combined as long as the functions of each other are not impaired.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Electric wire module 2 Electric wire 3 Cylindrical member 32 Through-hole 3a One end 3b Other end 4 Ventilation tube 4a-4c Open end

Claims (10)

Electric wires,
A first end and a second end, the tube is formed in a cylindrical shape surrounding at least a part of the electric wire, and the space between the first end and the electric wire is closed; A cylindrical member in which an opening for ventilation is formed at a position close to
Ventilation that has a first opening end that opens in the internal space of the cylindrical member and a second opening end that opens in the external space of the cylindrical member, and passes through the ventilation opening An electric wire module comprising a tube. The electric wire module according to claim 1,
The second end of the tubular member is open,
The electric wire module, wherein the ventilation opening in the cylindrical member is the opening at the second end. The electric wire module according to claim 1 or 2,
The first open end is an electric wire module closer to the first end than the second end of the tubular member. The electric wire module according to any one of claims 1 to 3,
The ventilation tube is
A main body pipe section that connects the first opening end and the second opening end, and that allows air to flow from the second opening end to the first opening end that communicates with the blower;
A branch portion between the first opening end and the second opening end branches off from the main body tube portion, and a third opening end which is an end portion opposite to the branch portion opens, and the main body tube portion And a branch pipe part through which air flows from the third opening end to the branch part due to the flow of air. The electric wire module according to claim 4,
The electric wire module, wherein the third opening end is located in the internal space of the cylindrical member. The electric wire module according to claim 5,
The electric wire module in which the ventilation tube is disposed so that the third opening end opens toward the first opening end in the longitudinal direction of the cylindrical member. The electric wire module according to claim 4,
The third open end is an electric wire module located in the external space of the cylindrical member. The electric wire module according to any one of claims 1 to 3,
The ventilation tube is
A main body pipe portion connecting the third opening end located in the external space of the cylindrical member and the second opening end, and air flowing from the second opening end communicating with the blower to the third opening end; ,
The branch portion between the second opening end and the third opening end is connected to the first opening end, and air flows from the first opening end to the branch portion due to the flow of air in the main body tube portion. An electric wire module having a branch pipe portion through which the gas flows. The electric wire module according to any one of claims 1 to 8,
The electric wire module, wherein the electric wire and the ventilation tube are bound by a binding tool. A first device mounted outside the vehicle;
Both are electric wire modules mounted on a vehicle including a second device and a blower device mounted on the vehicle,
An electric wire connecting the first device and the second device;
It has a first end and a second end, is formed in a cylindrical shape surrounding at least a part of the electric wire, and the space between the first end and the electric wire is closed outside the vehicle, and is used for ventilation in the vehicle A cylindrical member having an opening;
A first opening end located in the internal space of the cylindrical member, and a second opening end located in the vehicle and communicating with the blower, and a ventilation tube penetrating the ventilation opening. An electric wire module.

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