JP2010015901A - Ventilation connector and driving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilation connector and a driving device equipped with the same for securing an interior and exterior ventilation of a storage case for a drive source including motors etc., as well as for controlling foreign matters from entering inside the storage case. <P>SOLUTION: The connector 300 includes a resin member 340 which is arranged on a storage case 200A and defines a communication hole 344 communicating between the interior part of the storage case 200A and the exterior part of the storage case 200A, a Temish (R) 322 which is arranged so as to close the communication hole 344 and controls passage of liquid objects while having a good ventilation, and a cover 310 for the same covering the Temish 322 and controlling a deposition of the foreign matters on the Temish 322. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  Conventionally, in a drive device including a storage case in which a drive source such as a motor is stored, various drive devices have been proposed in which the inside of the storage case communicates with the outside to ensure air permeability in the storage case. Yes.

  In the vent hole structure of a motor described in Japanese Utility Model Publication No. 6-88165, a vent hole is formed in an end housing that functions as a connector portion. And if an external connector is connected to a connector part, the inside of a motor part will be open | released by air | atmosphere via a vent hole, a connector part, an external connector, etc.

  In the motor unit of the power window device described in Japanese Patent Laid-Open No. 2001-128407, a vent hole that communicates the inside and outside of the housing is formed in a portion (connector portion) exposed inside the inner panel of the motor unit housing. Has been. Thereby, the air permeability in the motor unit of the power window device is secured.

  An electric motor described in Japanese Patent Application Laid-Open No. 11-332160 includes a stator and a rotor, and a hermetically closed housing, and the inside and outside of the housing that are provided in the housing communicate with each other. A moisture-permeable portion that is wet and impermeable to water is provided. The connector described in Japanese Patent Application Laid-Open No. 2004-259536 is attached to a case having a hole.

Japanese Utility Model Publication No. 6-88165 JP 2001-128407 A JP-A-11-332160 JP 2004-259536 A

  However, in the motor vent structure described in Japanese Utility Model Laid-Open No. 6-88165, oil or the like filled in the motor section may leak to the outside. Furthermore, there is a possibility that an external foreign object may enter the motor unit through the vent hole.

  In the motor unit of the power window device described in Japanese Patent Application Laid-Open No. 2001-128407, there is a risk that external foreign matter may enter the motor unit through a vent hole formed in the housing.

  In the electric motor described in Japanese Patent Application Laid-Open No. 11-332160, since the moisture permeable portion is exposed to the outside, foreign matter outside the housing may adhere to the moisture permeable membrane, and the function of the moisture permeable membrane may be impaired. is there.

  In addition, in the connector described in said Unexamined-Japanese-Patent No. 2004-259536, it does not become the structure which connects the inside and outside of a case, and the air permeability inside and outside a case cannot be ensured.

  The present invention has been made in view of the problems as described above, and its purpose is to ensure air permeability between the inside and the outside of the housing case in which a driving source such as a motor is housed, and the inside of the housing case. It is an object of the present invention to provide a ventilation connector capable of suppressing entry of foreign matter and a driving device including the ventilation connector.

  A ventilation connector according to the present invention is provided in a storage case in which a drive source capable of generating power is stored, and a communication portion that defines a communication path that communicates the inside of the storage case with the outside of the storage case; A permeable membrane capable of suppressing the passage of a liquid substance and a cover member disposed so as to cover the permeable membrane and preventing foreign matter from adhering to the permeable membrane.

  Preferably, the communication portion is provided on a side surface of the storage case, and the communication path communicates with the horizontal passage extending in the horizontal direction from the inside of the storage case toward the outside of the storage case, and is connected upward. A permeable membrane is provided in the bent passage.

  Preferably, the communication portion is formed so as to protrude from the inner side surface of the storage case toward the inside of the storage case, and the opening located in the storage case among the openings of the communication path is formed inside the storage case. It is formed at a position away from the side surface.

  Preferably, the drive source is a motor generator, and a terminal connected to the motor generator is provided in the communication portion.

  The drive device according to the present invention includes the vent connector.

  In the ventilation connector according to the present invention and the drive device provided with the ventilation connector, air permeability between the inside and outside of the housing case in which a driving source such as a motor is housed is secured, and foreign matter enters the housing case. Can be suppressed.

  A drive device according to the present embodiment and a vehicle including the drive device will be described with reference to FIGS. Note that in the embodiments described below, when referring to the number, amount, and the like, the scope of the present invention is not necessarily limited to the number, amount, and the like unless otherwise specified. In the following embodiments, each component is not necessarily essential for the present invention unless otherwise specified. In addition, when there are a plurality of embodiments below, it is planned from the beginning to appropriately combine the features of each embodiment unless otherwise specified.

(Embodiment 1)
FIG. 1 is a schematic block diagram of a rotating electrical machine control device to which an electrical equipment connection structure according to an embodiment of the present invention is applied.

  The rotating electrical machine control device 1000 is mounted on an electric vehicle and includes a DC power supply B, inverters 110 and 120, a capacitor 130, and a control device 140 as shown in FIG.

  Inverter 110 includes U-phase arm 111, V-phase arm 112, and W-phase arm 113. U-phase arm 111, V-phase arm 112, and W-phase arm 113 are connected in parallel between nodes N1 and N2.

  U-phase arm 111 includes NPN transistors Q3 and Q4 connected in series, V-phase arm 112 includes NPN transistors Q5 and Q6 connected in series, and W-phase arm 113 includes NPN transistors Q7 and Q7 connected in series. Includes Q8. Further, diodes D3 to D8 that flow current from the emitter side to the collector side are connected between the collectors and emitters of the NPN transistors Q3 to Q8, respectively.

  Inverter 120 includes U-phase arm 121, V-phase arm 122, and W-phase arm 123. U-phase arm 121, V-phase arm 122, and W-phase arm 123 are connected in parallel between nodes N1 and N2.

  U-phase arm 121 includes NPN transistors Q9 and Q10 connected in series, V-phase arm 122 includes NPN transistors Q11 and Q12 connected in series, and W-phase arm 123 includes NPN transistors Q13 and Q13 connected in series. Q14 is included. Further, diodes D9 to D14 for passing a current from the emitter side to the collector side are connected between the collectors and emitters of the NPN transistors Q9 to Q14, respectively.

  An intermediate point of each phase arm of inverter 110 is connected to each phase end of each phase coil of motor generator MG1. An intermediate point of each phase arm of inverter 120 is connected to each phase end of each phase coil of motor generator MG2. That is, motor generators MG1 and MG2 are three-phase permanent magnet motor generators, and are configured such that one end of three coils of U-phase, V-phase, and W-phase is commonly connected to the midpoint. The other end of the U-phase coil of motor generator MG1 is at the midpoint of NPN transistors Q3 and Q4, the other end of the V-phase coil is at the midpoint of NPN transistors Q5 and Q6, and the other end of the W-phase coil is NPN transistor Q7. , Q8, respectively. Further, the other end of the U-phase coil of motor generator MG2 is at the intermediate point of NPN transistors Q9 and Q10, the other end of the V-phase coil is at the intermediate point of NPN transistors Q11 and Q12, and the other end of the W-phase coil is at NPN transistor Q13. , Q14 are respectively connected to the intermediate points.

  Capacitor 130 is connected in parallel to inverters 110 and 120 between node N1 and node N2.

  The DC power source B is composed of a secondary battery such as nickel hydride or lithium ion, a large capacitor, or the like. Inverter 110 converts DC voltage from capacitor 130 into AC voltage based on drive signal DRV1 from control device 140 to drive motor generator MG1. Inverter 120 converts DC voltage from capacitor 130 into AC voltage based on drive signal DRV2 from control device 140, and drives motor generator MG2.

  Capacitor 130 smoothes the DC voltage from DC power supply B, and supplies the smoothed DC voltage to inverters 110 and 120.

  FIG. 2 is a schematic diagram showing a connection structure between motor generators MG 1 and MG 2 and inverters 110 and 120.

  Rotating electrical machine control apparatus 1000 includes a driving apparatus 200 including motor generators MG1 and MG2. Drive device 200 includes motor generators MG1 and MG2, a housing case 200A for housing motor generators MG1 and MG2, and connectors (ventilating connectors) 300 and 400 mounted on housing case 200A.

  Here, motor generator MG 1 is connected to inverter 110 via connector 300, and motor generator MG 2 is connected to inverter 120 via connector 400.

  Connector 300 is connected to cable 302 connected to U-phase coil, V-phase coil, and W-phase coil of motor generator MG1, and to U-phase arm 111, V-phase arm 112, and W-phase arm 113 of inverter 110. Cable 301 is connected.

  Connector 400 is connected to cable 402 connected to each phase coil of motor generator MG2 and cable 401 connected to each phase arm of inverter 120.

  FIG. 3 is a perspective view of the connector 300, and FIG. 4 is a cross-sectional view of the connector 300. As shown in FIGS. 3 and 4, the connector 300 includes an insulating resin member (communication portion) 340, a part of which is embedded in the resin member 340, and a part of which is exposed to the outside of the resin member 340. Terminal 303, cable 302 electrically connected to terminal 303, metal cover member 310 attached to the surface of resin member 340, and attachment member 320 attached to resin member 340. Yes.

  Here, the terminal 303 is provided in the housing case 200A, and the cable 302 is disposed outside the housing case 200A.

  The cover member 310 is formed so as to cover a portion of the outer surface of the resin member 340 located outside the housing case 200A. The resin member 340 is formed with a plurality of projecting portions 345 that project from the inner surface of the housing case 200A toward the inside of the housing case 200A. And the terminal 303 is exposed from the front-end | tip part of each protrusion part 345. FIG.

  FIG. 5 is a cross-sectional view showing the configuration of the protrusion 345 and the vicinity thereof. As shown in FIG. 5, the resin member 340 is formed with a communication hole 344 that communicates the inside and the outside of the housing case 200A.

  The communication hole 344 includes a horizontal hole (horizontal passage) 341 that is formed in the protruding portion 345 and extends in the horizontal direction, and a vertical hole (bend passage) 342 that is continuous with the horizontal hole 341 and bends upward.

  Here, the vertical hole 342 is defined by a resin mounting member 320 fitted in the resin member 340. The mounting member 320 is formed in the resin member 340 and is fitted in a hole 350 communicating with the lateral hole 341, and the upper portion of the mounting member 320 is covered with a cover member (covering member) 310.

  The mounting member 320 is formed in a hollow shape, and the mounting member 320 includes a top plate portion 356 and a cylindrical portion 357 provided continuously to the top plate portion 356. The top plate portion 356 is formed to have a larger diameter than the cylindrical portion 357 and is locked to the opening edge portion of the hole portion 350. The cylinder portion 357 is inserted into the hole portion 350. Note that a barb is formed at the lower end of the cylindrical part 357, and this barb (engagement part) is locked to the opening edge of the opening of the hole 350 that opens in the horizontal hole 341.

  A through-hole 321 is formed in the top plate portion 356, and the through-hole 321 is closed by a PTFE permeable membrane (Polytetrafluoroethylene (PTFE)) 322. As described above, the PTFE permeable membrane 322 is provided in the vertical hole 342, and the communication hole that communicates the inside of the housing case 200 </ b> A and the outside of the housing case 200 </ b> A is closed by the PTFE permeable membrane 322. PTFE permeable membrane is a general term for a porous tetrafluoroethylene resin membrane. Specifically, the PTFE permeable membrane is a porous membrane having innumerable pores of 0.1 to 10 micrometers and has air permeability, while the liquid in the storage case 200A and the outside of the storage case 200A. This is a permeable membrane capable of suppressing the passage of liquid.

  Here, the cover member 310 is provided so as to cover the PTFE permeable membrane 322, and foreign matter from the outside of the housing case 200 </ b> A is prevented from adhering to the PTFE permeable membrane 322.

  Further, a gap is defined between the cover member 310 and the mounting member 320, and the air that has passed through the through hole 321 passes through the gap defined between the cover member 310 and the mounting member 320, To be discharged.

  For this reason, when the pressure in the storage case 200A increases, gas such as air in the storage case 200A causes the communication hole 344, the PTFE permeable membrane 322, the gap between the cover member 310 and the mounting member 320, and the resin member 340. And it is discharged to the outside through the gap between the cover members 310.

  Similarly, when the pressure in the housing case 200A is reduced, conversely, the gap between the cover member 310 and the resin member 340, the gap between the cover member 310 and the mounting member 320, the PTFE permeable membrane 322, the vertical hole 342, It passes through the horizontal hole 341 and enters the housing case 200A.

  As described above, since the PTFE permeable membrane 322 is provided in the distribution path while ensuring the air permeability between the inside of the housing case 200A and the outside of the housing case 200A, liquid such as oil can be transferred to the outside of the housing case 200A. Leakage can be suppressed.

  Here, the horizontal hole 341 extends in the horizontal direction from the side surface of the housing case 200A, and the vertical hole 342 connected to the horizontal hole 341 extends upward.

  For this reason, even if the oil in the storage case 200A enters from the opening 343 that opens into the storage case 200A, the oil can be prevented from coming into contact with the PTFE permeable membrane 322.

  Here, the protruding portion 345 is formed so as to protrude from the inner wall surface of the housing case 200A toward the housing case 200A. And since the opening part 343 is formed in the front-end | tip part of the protrusion part 345, the opening part 343 is located so that it may leave | separate from the inner wall face of the storage case 200A to the storage case 200A inward side.

  For this reason, even if the oil hangs down the inner wall surface of the housing case 200 </ b> A, the oil can be prevented from entering the opening 343. As described above, by providing the air holes in the bus bars connecting the inverters 110 and 120 and the motor generators MG1 and MG2, the interior and the exterior of the housing case 200A can be connected to the housing case 200A without any new processing. Air permeability can be ensured, and manufacturing costs can be reduced.

  Although the embodiment of the present invention has been described above, it should be considered that the embodiment disclosed this time is illustrative and not restrictive in all respects. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. Furthermore, the above numerical values are examples, and are not limited to the above numerical values and ranges.

  The present invention can be applied to a ventilation connector and a driving device including the ventilation connector.

1 is a schematic block diagram of a rotating electrical machine control device to which an electrical equipment connection structure according to an embodiment of the present invention is applied. It is a schematic diagram which shows the connection structure of a motor generator and an inverter. It is a perspective view of a connector. It is sectional drawing of a connector. It is sectional drawing which shows the structure of a protrusion part and its vicinity.

Explanation of symbols

  110, 120 inverter, 140 control device, 200A housing case, 200 drive device, 300, 400 connector, 303 terminal, 310 cover, 320 mounting member, 321 through hole, 322 PTFE permeable membrane, 340 resin member.

Claims (5)

A communication portion that is provided in a storage case in which a drive source capable of generating power is stored, and that defines a communication path that connects the inside of the storage case and the outside of the storage case;
A permeable membrane that is disposed so as to close the communication path and has air permeability, while being capable of suppressing the passage of a liquid substance,
A cover member that is disposed so as to cover the permeable membrane and suppresses foreign matter from adhering to the permeable membrane;
Ventilated connector with. The communication portion is provided on a side surface of the housing case,
The communication path includes a horizontal path that extends in a horizontal direction from the inside of the storage case toward the outside of the storage case, and a bent path that communicates with the horizontal path and extends upward.
The ventilation connector according to claim 1, wherein the permeable membrane is provided in the bent passage.   The communication part is formed so as to protrude from the inner side surface of the housing case toward the inside of the housing case, and the opening located in the housing case among the openings of the communication path is the housing case. The ventilation connector according to claim 2, wherein the ventilation connector is formed at a position away from the inner surface of the ventilation connector.   The ventilation connector according to any one of claims 1 to 3, wherein the drive source is a motor generator, and the communication portion is provided with a terminal connected to the motor generator.   The drive device provided with the ventilation connector in any one of Claims 1-4.

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