Source: https://patents.google.com/patent/JP2019203448A/en
Timestamp: 2020-08-09 14:02:33
Document Index: 669306833

Matched Legal Cases: ['art 12', 'art 12', 'art 12', 'art, 13', 'art, 22', 'art, 25']

JP2019203448A - Electric compressor for vehicle - Google Patents
Electric compressor for vehicle Download PDF
JP2019203448A
JP2019203448A JP2018099099A JP2018099099A JP2019203448A JP 2019203448 A JP2019203448 A JP 2019203448A JP 2018099099 A JP2018099099 A JP 2018099099A JP 2018099099 A JP2018099099 A JP 2018099099A JP 2019203448 A JP2019203448 A JP 2019203448A
JP2018099099A
一重 片桐
Kazushige Katagiri
サンデン・オートモーティブコンポーネント株式会社
2018-05-23 Application filed by サンデン・オートモーティブコンポーネント株式会社, Sanden Automotive Components Corporation filed Critical サンデン・オートモーティブコンポーネント株式会社
2018-05-23 Priority to JP2018099099A priority Critical patent/JP2019203448A/en
2019-11-28 Publication of JP2019203448A publication Critical patent/JP2019203448A/en
To allow for inspection of airtightness while improving quality by suppressing an increase in the number of components and work processes.SOLUTION: A compressor-side connector 14 is formed with a communication passage 23 that communicates between an inside and an outside of an inverter storage part 12 to inspect airtightness in the inverter storage part 12. The communication passage 23 is encapsulated when a vehicle-side connector 32 is inserted therein.SELECTED DRAWING: Figure 2
The present invention relates to an electric compressor for a vehicle.
Among the compressors mounted on the vehicle, in an electric compressor for a vehicle incorporating an inverter, the airtightness in the inverter chamber is inspected for the purpose of preventing moisture and foreign matter from entering. Patent Document 1 proposes to form a dedicated inspection port in the housing and provide a valve for opening and closing the inspection port in order to perform an airtightness inspection.
Japanese Patent No. 5558537
Forming a dedicated inspection port in the housing, adding additional valves, and adding new sealing means may increase the number of parts and work processes, and may affect quality .
An object of the present invention is to make it possible to perform an airtightness inspection while suppressing an increase in the number of parts and work processes and improving quality.
An electric compressor for a vehicle according to an aspect of the present invention is provided.
A compressor mounted on a vehicle and driven by a built-in electric motor;
An accommodating portion provided in the compressor and accommodating an electric motor drive circuit;
A compressor-side connector that is provided on the outer wall of the housing portion and electrically connects the vehicle-side wiring and the drive circuit when the vehicle-side connector formed at the tip of the vehicle-side wiring is inserted;
The compressor-side connector is formed with a communication path that connects the inside and the outside of the housing portion in order to inspect the airtightness in the housing portion, and is sealed when the vehicle-side connector is inserted. .
According to the present invention, the communication path is sealed when the vehicle-side connector is inserted. That is, since the sealing of the communication path is originally realized by the standard of pressure resistance required for the connector, it is not necessary to add an inspection valve or a new sealing means. Therefore, an increase in the number of parts and work processes can be suppressed, and the airtightness inspection can be performed while improving the quality.
It is an external view of a compressor. It is sectional drawing of an inverter accommodating part. The connector on the compressor side is shown. It is the figure which showed the outline | summary of the airtight test | inspection.
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each drawing is schematic and may be different from the actual one. Further, the following embodiments exemplify apparatuses and methods for embodying the technical idea of the present invention, and the configurations are not specified as follows. That is, the technical idea of the present invention can be variously modified within the technical scope described in the claims.
<< One Embodiment >>
FIG. 1 is an external view of a compressor.
The compressor 11 (vehicle electric compressor) is an electric scroll compressor used in a refrigerant circuit of a car air conditioner, for example. That is, when mounted on a vehicle and driven by a built-in electric motor, the refrigerant is sucked, compressed, and discharged.
An inverter accommodating portion 12 is formed on the front side in the axial direction and is sealed by a front cover 13. A low-voltage circuit connector 14 (compressor-side connector) and a high-voltage circuit connector 15 are provided on the outer wall of the inverter housing portion 12.
FIG. 2 is a cross-sectional view of the inverter accommodating portion.
An inverter 16 that is a drive circuit for the electric motor is accommodated in the inverter accommodating portion 12.
(A) in a figure shows the state before connecting the vehicle side wiring 31 of a low voltage circuit. The connector 14 includes a cylindrical portion 21 that extends in the insertion direction, and an end plate 22 that closes the back side of the cylindrical portion 21 in the insertion direction. The end plate 22 is formed with a communication path 23 that communicates the inside and the outside of the inverter housing portion 12 in order to check the airtightness of the inverter housing portion 12. The communication path 23 is disposed at a portion that does not contact the terminal. The communication path 23 penetrates the end plate 22 along the insertion direction. The cross-sectional shape of the communication path 23 is circular, for example, and the diameter is about 0.3 mm. About the size of the communicating path 23, it sets according to the flow volume required in the case of an airtight test | inspection.
An opening 24 is formed in the outer wall of the inverter accommodating portion 12 so as to penetrate along the insertion direction and fit the connector 14. The outer peripheral side of the cylindrical portion 21 of the connector 14 is fitted into the opening 24 via an O-ring 25 (seal member).
(B) in a figure shows the state after connecting the vehicle side wiring 31 of a low voltage circuit. A connector 32 (vehicle side connector) is formed at the tip of the vehicle side wiring 31. When the vehicle-side connector 32 is inserted into the compressor-side connector 14, the vehicle-side wiring 31 and the inverter 16 are electrically connected. Further, all of the circumferential direction on the inner peripheral surface of the cylindrical portion 21 is in close contact with the outer peripheral surface of the connector 32 on the vehicle side, whereby the communication path 23 is sealed.
FIG. 3 shows a connector on the compressor side.
(A) in a figure is a perspective view, (b) is a side view, (c) is the top view seen from the insertion direction.
Next, main effects of the embodiment will be described.
In the compressor 11 incorporating the inverter 16, it is necessary to inspect the airtightness in the inverter accommodating portion 12 for the purpose of preventing moisture and foreign matters from entering. In order to perform this inspection, it is conceivable that a dedicated inspection port is formed in the housing, and a valve or a new sealing means is provided. However, the number of parts and work processes are increased, which may affect the quality. In addition, it is necessary to reliably fill the hole of the inspection port after the inspection to ensure the sealing performance.
Therefore, in the present embodiment, the communication path 23 that connects the inside and the outside of the inverter accommodating portion 12 is formed in the connector 14 on the compressor side, and this is used for an airtightness inspection (hereinafter referred to as an airtightness inspection). .
Here, the airtight inspection will be described.
FIG. 4 is a diagram showing an outline of the airtight inspection.
In the airtight inspection, the one end side of the inspection hose 35 is connected to the connector 14 so that the inspection hose 35 communicates with the inside of the inverter housing portion 12 through the communication path 23. The compressor 11 is disposed inside the chamber 36, and the other end side of the inspection hose 35 is pulled out of the chamber 36 with the chamber 36 sealed. Then, the inside of the chamber 36 is pressurized to a predetermined pressure. At this time, the airtightness of the inverter accommodating portion 12 is inspected by detecting the air flow rate of the inspection hose 35. That is, when the air flow rate of the inspection hose 35 is less than a predetermined threshold value, it is determined that it is normal, and when it is equal to or greater than the threshold value, it is determined that there is an abnormality.
The compressor 11 for which airtightness is guaranteed is shipped and mounted on a vehicle. Then, when the vehicle-side connector 32 is inserted into the compressor-side connector 14 and is brought into a fitted state, the communication passage 23 used for the airtight inspection is sealed. This is because the communication path 23 is formed in the end plate 22 of the connector 14, and in the cylindrical portion 21 of the connector 14, all of the circumferential direction on the inner peripheral surface is in close contact with the outer peripheral surface of the vehicle-side connector 32. . Thus, since the sealing of the communication passage 23 is originally realized by the standard of pressure resistance required for the connector, it is not necessary to add an inspection valve or a new sealing means. Therefore, an increase in the number of parts and work processes can be suppressed, and an airtightness inspection can be performed while improving quality.
The size of the communication passage 23 is set according to the flow rate required for the airtight inspection. Thus, by ensuring the inspection hole necessary for the design for the airtight inspection on the connector, the inspection quality can be ensured in the design, and the inspection quality is improved. If the inspection hole is too small, the flow rate necessary for the airtight inspection cannot be ensured, so that although there is an abnormality, it may be erroneously determined to be normal. By setting, it is possible to avoid erroneous determination.
Further, the cylindrical portion 21 of the connector 14 is fitted into an opening 24 formed on the outer wall of the inverter accommodating portion 12 via an O-ring 25. Therefore, the inverter accommodating part 12 can be sealed.
The compressor 11 includes a low voltage circuit connector 14 and a high voltage circuit connector 15, and the communication path 23 is formed on the low voltage circuit connector 14 side. Since the high voltage circuit connector 15 is shielded for insulation, the low voltage circuit connector 14 generally has a simpler structure. Accordingly, the connector 14 of the low voltage circuit is easier to form the communication path 23.
In one embodiment, one communication path 23 is formed with respect to the end plate 22, but the present invention is not limited to this, and a plurality of communication paths 23 may be formed.
In one embodiment, the communication path 23 having a circular cross-sectional shape is formed, but the present invention is not limited to this, and the communication path 23 may be formed in a quadrilateral or polygonal shape.
In one embodiment, the communication path 23 is formed in the connector 14 of the low voltage circuit, but the communication path 23 may be formed in the connector 15 of the high voltage circuit.
Although the present invention has been described with reference to a limited number of embodiments, the scope of rights is not limited thereto, and modifications of the embodiments based on the above disclosure are obvious to those skilled in the art.
DESCRIPTION OF SYMBOLS 11 ... Compressor, 12 ... Inverter accommodating part, 13 ... Front cover, 14 ... Connector, 15 ... Connector, 16 ... Inverter, 21 ... Cylindrical part, 22 ... End plate, 23 ... Communication path, 24 ... Opening part, 25 ... O-ring, 31 ... vehicle side wiring, 32 ... connector, 35 ... inspection hose, 36 ... chamber
An accommodating portion provided in the compressor and accommodating a drive circuit of the electric motor;
A compressor-side connector that is provided on the outer wall of the housing portion and electrically connects the vehicle-side wiring and the drive circuit when a vehicle-side connector formed at the tip of the vehicle-side wiring is inserted;
The compressor-side connector is formed with a communication path that communicates the inside and the outside of the housing portion in order to inspect the airtightness of the housing portion, and the communication path when the vehicle-side connector is inserted. Is an electric compressor for vehicles.
The compressor side connector is
A cylindrical portion that extends in the insertion direction of the vehicle-side connector, and that can be closely attached to the outer peripheral surface of the vehicle-side connector, all in the circumferential direction on the inner peripheral surface
An end plate that closes the back side in the insertion direction of the cylindrical portion,
The electric compressor for a vehicle according to claim 1, wherein the communication path passes through the end plate along the insertion direction.
The housing part has an opening formed in the outer wall,
The vehicular electric compressor according to claim 2, wherein the cylindrical portion is fitted to the opening via a seal member.
The electric compressor for vehicles according to any one of claims 1 to 3, wherein the compressor side connector is for a low voltage circuit.
JP2018099099A 2018-05-23 2018-05-23 Electric compressor for vehicle Pending JP2019203448A (en)
JP2018099099A JP2019203448A (en) 2018-05-23 2018-05-23 Electric compressor for vehicle
PCT/JP2019/019744 WO2019225508A1 (en) 2018-05-23 2019-05-17 Electric compressor for vehicle
JP2019203448A true JP2019203448A (en) 2019-11-28
ID=68615831
JP2018099099A Pending JP2019203448A (en) 2018-05-23 2018-05-23 Electric compressor for vehicle
JP (1) JP2019203448A (en)
WO (1) WO2019225508A1 (en)
JP2859822B2 (en) * 1994-11-14 1999-02-24 株式会社ミツバ Structure for airtight test of electrical equipment
JP5522184B2 (en) * 2012-02-02 2014-06-18 株式会社豊田自動織機 Electric compressor and its airtightness inspection method
2018-05-23 JP JP2018099099A patent/JP2019203448A/en active Pending
2019-05-17 WO PCT/JP2019/019744 patent/WO2019225508A1/en unknown
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