CN115428264A - Hermetic terminal, electric compressor using the same, and connection method - Google Patents
Hermetic terminal, electric compressor using the same, and connection method Download PDFInfo
- Publication number
- CN115428264A CN115428264A CN202180027857.0A CN202180027857A CN115428264A CN 115428264 A CN115428264 A CN 115428264A CN 202180027857 A CN202180027857 A CN 202180027857A CN 115428264 A CN115428264 A CN 115428264A
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- China
- Prior art keywords
- motor
- peripheral wall
- lead member
- outer ring
- wall portion
- Prior art date
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- Pending
Links
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 76
- 239000011810 insulating material Substances 0.000 claims abstract description 28
- 239000004020 conductor Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims description 54
- 239000011347 resin Substances 0.000 claims description 54
- 238000007789 sealing Methods 0.000 claims description 44
- 230000006835 compression Effects 0.000 claims description 31
- 238000007906 compression Methods 0.000 claims description 31
- 239000003507 refrigerant Substances 0.000 claims description 25
- 239000012777 electrically insulating material Substances 0.000 claims description 5
- 239000013307 optical fiber Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 23
- 239000011521 glass Substances 0.000 description 8
- 239000003566 sealing material Substances 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 238000010292 electrical insulation Methods 0.000 description 4
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- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
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- 229920001515 polyalkylene glycol Polymers 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
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- 229910017060 Fe Cr Inorganic materials 0.000 description 2
- 229910002544 Fe-Cr Inorganic materials 0.000 description 2
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 2
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- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
Abstract
Hermetic terminal (10) comprising: a lead member (11) formed of a conductive material; an outer ring base (12) for holding the lead member (11); an insulating material (13) which is provided between the lead member (11) and the outer ring base (12) and insulates the lead member (11) and the outer ring base (12) from each other; and a cover member (14 a) fixed to at least one surface of the outer ring base (12). The end of the lead member (11) has an exposed portion (15) exposed from the insulating material (13). The cover member (14 a) has a peripheral wall portion (14 b) that surrounds the exposed portion (15) of the lead member (11).
Description
Technical Field
The present disclosure relates to an airtight terminal, a motor-driven compressor using the same, and a connecting method. More particularly, the present invention relates to an airtight terminal for mounting in a vehicle, an electric compressor using the airtight terminal, and a connection method.
Background
The hermetic terminal is a terminal in which a lead wire is hermetically sealed in an insertion hole of a metal outer ring base (eyelet) by a glass insulating material. The airtight terminal is used for supplying an electric current to an electric device or element housed in the airtight container or for outputting a signal from the electric device or element to the outside.
For example, an airtight terminal used in a compressor of a refrigerator or an air conditioner is shown in international publication No. WO2010/117000 (patent document 1). The outer ring base of the airtight terminal includes: a top plate portion; a cylindrical portion extending downward from an outer peripheral end of the top plate portion; a flange portion extending obliquely outward from a lower end of the cylindrical portion; and three small cylinder portions forming lead sealing holes extending from the top plate portion toward the inside. In each of the lead sealing holes of the outer ring base, a lead is hermetically sealed by a glass insulating material for sealing.
In a hybrid vehicle, in order to reduce the influence of the engine on the environment, the engine is stopped when the vehicle is temporarily stopped by a traffic light or the like. In this case, if a compressor driven by the engine is used, the air conditioner is stopped each time the vehicle is stopped, which is problematic in summer or winter, particularly in summer heat or severe winter.
In a hybrid vehicle or an electric vehicle, a compressor that is not driven by an engine but is driven by a motor is used. As in the case of a compressor of an indoor air conditioner, a compressor is used in which a compression mechanism is incorporated in an airtight container together with a motor.
In view of providing an in-vehicle motor-driven compressor in a narrow engine room, a motor-driven compressor that is as small and lightweight as possible while saving space is preferable. The motor is driven by electricity supplied through an airtight terminal mounted to a terminal mounting hole of the airtight container. For example, as shown in chinese utility model registration CN206098769U (patent document 2), many hermetic terminals used in an electric compressor for vehicle use are arranged in a linear array in order to save space.
Documents of the prior art
Patent literature
Patent document 1: international publication No. WO2010/117000
Patent document 2: chinese Utility model registration No. CN206098769U
Disclosure of Invention
Technical problem to be solved by the invention
In an electric compressor for mounting on a vehicle, an airtight terminal is mounted in a terminal mounting hole of a sealed container that accommodates a refrigerant, a lubricating oil, and an electric motor. Electricity is supplied from a power supply to the motor through the airtight terminal, the refrigerant is compressed and circulated, and is used for heat exchange between the inside and outside of the vehicle. Some electric compressors for vehicles use PAG (polyalkylene glycol) synthetic oil as a lubricating oil. The PAG synthetic oil has low electrical insulation and electric conductivity. The conventional hermetic terminal is not preferable in terms of electrical insulation because it has a structure that allows oil to intrude between lead members.
In a conventional hermetic terminal of an electric compressor for vehicle use, an insulating coating member made of silicone rubber is sometimes provided on the outer ring base surface and the outer lead outside the sealed container for the purpose of improving electrical insulation. However, silicone rubber does not include refrigerant resistance and oil resistance, and is difficult to apply to the inside of a closed container. Further, even if the inner lead of the airtight terminal is covered with rubber, since the wiring socket into which the airtight terminal is inserted is not watertight, it is impossible to prevent oil from infiltrating into the socket.
The present disclosure provides an airtight terminal in which oil in the airtight terminal for an in-vehicle electric compressor does not contact with an electrode surface, an electric compressor using the airtight terminal, and a wiring method.
Technical scheme for solving technical problem
The airtight terminal of the present disclosure includes: a lead member formed of a conductive material; an outer ring base that holds the lead member; an insulating material provided between the lead member and the outer ring base and insulating the lead member from the outer ring base; and a cover member fixed to at least one surface of the outer ring base. The end of the lead member has an exposed portion exposed from the insulating material. The cover member has a peripheral wall portion surrounding the exposed portion of the lead member.
In the hermetic terminal, the cover member may be made of an electrically insulating material having refrigerant resistance and oil resistance.
In the airtight terminal, the cover member may be fixed to the outer ring base with a curable resin.
In the airtight terminal, the peripheral wall portion of the cover member may surround the periphery of the exposed portion in a rectangular shape.
In the airtight terminal, all or a part of the peripheral wall portion of the cover member may be detachably provided.
The electric compressor of the present disclosure includes: the airtight terminal described above; a compression mechanism; a motor for driving the compression mechanism; an electric wire connecting the motor and the airtight terminal; an inverter device that drives the motor; a hermetic container that houses the motor and the compression mechanism; an inverter case that is joined to the sealed container and accommodates the inverter device; a connecting portion that electrically connects the electric wire and the exposed portion; and a sealing resin filled in the peripheral wall portion. The exposed portion and the connecting portion are sealed in the sealing resin.
In the electric compressor, the connecting portion may include a connector provided at an end of the electric wire and connecting the electric wire to the exposed portion of the lead member.
The connection method of the present disclosure is a connection method of connecting the hermetic terminal and an electric wire of an electric compressor, wherein the electric compressor includes: a compression mechanism; a motor for driving the compression mechanism; the electric wire connecting the motor and the airtight terminal; an inverter device that drives the motor; and a closed container which houses the motor and the compression mechanism; an inverter case that is joined to the sealed container and accommodates the inverter device; and a connecting portion that electrically connects the electric wire and the exposed portion. The connection method comprises the following steps: connecting the electric wire of the motor to the exposed portion of the lead member surrounded by the peripheral wall portion of the airtight terminal through the connecting portion; filling a sealing resin into the peripheral wall portion, and sealing the exposed portion and the connection portion in the sealing resin; and curing the sealing resin.
In the connection method, after the step of curing the sealing resin, a step of assembling each member constituting the motor may be further included.
In the above-described connecting method, the step of connecting the peripheral wall portion by the connecting portion may be followed by a step of attaching the detached peripheral wall portion to a part or the whole of the peripheral wall portion, and the step of filling the sealing resin may be followed by the step of attaching the peripheral wall portion to a part or the whole of the peripheral wall portion.
Effects of the invention
According to the present disclosure, it is possible to provide an airtight terminal in which oil does not come into contact with an electrode surface in the airtight terminal for an in-vehicle electric compressor, an electric compressor using the airtight terminal, and a wiring method.
Drawings
Fig. 1 shows an airtight terminal according to the present disclosure, (a) is a plan view showing a back side, (b) is a partial sectional front view of the airtight terminal taken along line Ib-Ib of (a), (c) is a bottom view showing an outer side, and (d) is a side view.
Fig. 2 shows the airtight terminal of the present disclosure, (a) is a plan view showing the rear side, (b) is a partial sectional front view taken along line IIb-IIb of (a), (c) is a bottom view showing the outer side, and (d) is a side view.
Fig. 3 is a flowchart showing a connection process of the airtight terminal of the present disclosure.
Fig. 4 is a sectional view of the motor-driven compressor of the present disclosure.
Fig. 5 shows a mounted state of the hermetic terminal of the present disclosure, (a) is a plan view seen from a rear side of a hermetic container of the electric compressor, and (b) is a partial sectional view taken along a V-V line of (a).
Detailed Description
The hermetic terminal of the present embodiment includes: a lead member formed of a conductive material; an outer ring base that holds the lead member; an insulating material provided between the lead member and the outer ring base and insulating the lead member from the outer ring base; and a cover member fixed to one surface of the outer ring base. The end of the lead member has an exposed portion protruding from the insulating material. The cover member has a peripheral wall portion surrounding the exposed portion of the lead member.
The cover member may also be formed of an electrically insulating material having refrigerant resistance and oil resistance. The peripheral wall portion of the cover member may be partly or entirely detachable as required. When the hermetic terminal is used in an electric compressor, the cover member is disposed inside a hermetic container that houses the electric motor.
The cover member is fixed so as to cover at least one surface of the outer ring base and a part of the back side of the lead member. The electrode is disposed so as to be exposed to the back side of the lead member or to be connected to the lead member inside the peripheral wall portion. An insulating sealing material having refrigerant resistance and oil resistance is filled in a peripheral wall portion provided around the lead member or the exposed portion of the electrode connected to the lead member, and is cured. Thus, the entire back side current-carrying portion including the connection portion of the electric wire of the motor connected to the lead member is insulated and covered.
In the case of the insulating cover, first, the electric wire of the motor is electrically connected to the exposed portion of the airtight terminal. Then, the peripheral wall portion is filled with a sealing resin up to the upper end of the peripheral wall portion, and cured. This allows the entire connecting portion of the electric wire and the exposed portion of the lead member to be insulated and covered. By covering with the sealing resin, the penetration of oil having low electrical insulation into the lead member can be completely cut off, and the current-carrying portion of the airtight terminal does not contact the oil.
The hermetic terminal connection method according to the present embodiment is a method of connecting an electric wire of a motor that drives a compression mechanism of an electric compressor for a vehicle to an exposed portion of a lead member provided on a back side inside a peripheral wall portion or an exposed portion of a lead member including an electrode plate and the like connected thereto.
That is, in the connection method of the present embodiment, first, the electric wire of the motor is connected to the exposed portion of the lead member surrounded by the peripheral wall portion of the airtight terminal. Then, the inside of the peripheral wall portion is filled with a sealing resin and cured. Thereby, the exposed portion and the connection portion of the electric wire are entirely sealed in the sealing resin.
The airtight terminal may be detachably attached to a part or the whole of the peripheral wall portion. By making it possible to remove a part of the peripheral wall portion facing the side surface of the exposed portion, the electric wire of the motor can be attached to the exposed portion without being obstructed by the peripheral wall portion, and the work of connecting the electric wire is facilitated. After the connection of the electric wire is completed, the detached peripheral wall portion is mounted again. The peripheral wall portion is filled with a sealing resin in the same order as described above, and the exposed portion and the connection portion of the electric wire are all resin-sealed.
The vehicle-mounted electric compressor of the present embodiment includes: a compression mechanism; a motor for driving the compression mechanism; an inverter that drives the motor; a hermetic container that houses the motor and the compression mechanism; an inverter case that is joined to the sealed container and that houses the inverter; and an airtight terminal provided in the sealed container and electrically connecting the inverter and the motor.
The airtight terminal includes: a lead member formed of a conductive material; an outer ring base that holds the lead member; an insulating material for insulating the lead member from the outer ring base; and a cover member fixed to at least one surface of the outer ring base. The cover member has a peripheral wall portion surrounding the exposed portion of the lead member. The electric wire of the motor is connected to the exposed portion through a connecting portion. The peripheral wall portion is filled with a sealing resin, and the exposed portion and the connection portion of the electric wire are sealed in the sealing resin.
As shown in fig. 1, the airtight terminal 10 of the embodiment includes: a lead member 11, the lead member 11 being formed of a conductive material; an outer ring base 12, the outer ring base 12 holding the lead member 11; an insulating material 13, the insulating material 13 being provided between the lead member 11 and the outer ring base 12 to insulate them; and a cover member 14a, the cover member 14a being fixed to one surface of the outer ring base 12 with a curable resin. The cover member 14a has a peripheral wall portion 14b surrounding the periphery of the exposed portion 15.
The cover member 14 is made of an electrically insulating material having refrigerant resistance and oil resistance. The peripheral wall portion 14b may be partially detachable as necessary. In the case of the motor-driven compressor, the cover member 14 is disposed inside a closed container that houses the motor. The cover member 14 covers at least a part of the lead member 11 on one surface and the back surface of the outer ring base 12.
The rear side of the lead member 11 is exposed inside the peripheral wall portion 14b. The lead member 11 may have an electrode plate not shown. The cover member 14a is provided so that the peripheral wall portion 14b surrounds the exposed portion 15 of the lead member 11 or the exposed portion of the electrode plate connected to the lead member 11.
The cover member 14a is provided to cover the entire back side current-carrying portion including the connection portion of the electric wire or the connector of the motor electrically connected to the lead member 11 in an insulated manner. That is, after the connection portion of the electric wire of the motor is connected to the lead member 11, the insulating sealing material having refrigerant resistance and oil resistance is filled in the peripheral wall portion 14b and cured. This allows the entire back side current-carrying portion including the connection portion of the electric wire or the connector of the motor electrically connected to the lead member 11 to be insulated and covered.
As shown in fig. 2, the hermetic terminal 20 of the present disclosure includes: a lead member 21, the lead member 21 including an electrode plate 21a and a lead 21b of a conductive material; an outer ring base 22, the outer ring base 22 holding the lead member 21; an insulating material 23, the insulating material 23 being provided between the lead member 21 and the outer ring base 22 to insulate therebetween; and a cover member 24, wherein the cover member 24 is fixed to one surface of the outer ring base 22 by a curable resin.
The cover member 24 has peripheral wall portions 24b and 24d surrounding the exposed portion 25 of the lead member 21. The cover member 24 (24 a, 24b, 24c, 24 d) in fig. 2 is made of an electrically insulating material having refrigerant resistance and oil resistance. The peripheral wall portion 24d of the peripheral wall portions 24b and 24d may be detachable as necessary.
In the case of the motor-driven compressor, the cover member 24 is disposed inside a closed container that houses the motor. The cover member 24 is fixed to cover a part of the lead member 21 and the outer ring base 22 on the rear side except for the exposed portion 25. The lead wire 21b on the back side or the electrode plate 21a connected to the lead wire 21b is exposed inside the peripheral wall portions 24b and 24d. In fig. 2 (a), the lead member 21 hidden by the cover member 24 is indicated by a broken line.
The connection method of the present disclosure for connecting the hermetic terminal is a connection method of connecting the lead member of the hermetic terminal of the present disclosure to an electric wire or a connector of a motor of an electric compressor for vehicle mounting, and insulating and sealing the connection portion and the exposed portion of the lead member.
As shown in the process flow chart of fig. 3, in the connection method of the present embodiment, first, the electric wire of the motor is connected to the exposed portion of the lead member surrounded by the peripheral wall portion of the airtight terminal (electrical connection step 31), next, the inside of the peripheral wall portion is filled with the sealing resin (resin filling step 32), and further, the sealing resin is cured (resin curing step 33). Thereafter, the hermetic terminal and the components of the electric motor such as the stator and the rotor are assembled to assemble the electric compressor (motor assembling step 34).
With the connection method of the present embodiment, the entire current-carrying portion (exposed metal portion or the like) of the airtight terminal disposed inside the airtight container of the motor, including the connection portion of the electric wire or the connector, is sealed in the sealing resin.
In the airtight terminal, a part of the peripheral wall portion may be detachably attached. By removing a part of the peripheral wall portion facing the side surface of the exposed portion, the operation of connecting the electric wire of the motor to the exposed portion is facilitated without being obstructed by the peripheral wall portion. After the connection work is completed by the connection portion of the electric wire or the connector, the detached peripheral wall portion is mounted again. The peripheral wall portion is filled with a sealing resin in this order, and the exposed portion and the connection portion of the electric wire or the connector of the motor are all resin-sealed.
An outline of a scroll-type electric compressor will be described with reference to fig. 4 as an example of an electric compressor for a vehicle. The electric compressor 40 for vehicle mounting has a sealed container in which a front sealed container 41 and a rear sealed container 42 are integrally fixed while maintaining airtightness by bolt fastening or the like. The sealed containers 41 and 42 are generally formed of a metal material such as aluminum or an aluminum alloy. The closed casing 42 has a suction port 43 for the refrigerant and the oil, and the closed casing 41 has a discharge port 44. The suction port 43 and the discharge port 44 are connected to an external refrigerant circulation circuit, not shown.
A scroll-type compression mechanism 45 and a motor 46 for driving the compression mechanism 45 are housed in the inner side 42a of the closed vessels 41, 42. The motor 46 includes a rotary shaft 47 rotatably held in the closed casing 42 via a bearing, a rotor 48 fixed to the rotary shaft 47, and a stator 49 disposed on the outer periphery of the rotor 48 and fixed to the inner wall of the closed casing 42. The rotor 48 has a plurality of permanent magnets 401, and the stator 49 has coils 402 wound in three phases.
On the other hand, an inverter case 409 that houses an inverter device 408 is provided in a part of the outer peripheral wall of the closed casing 42. An inverter device 408 and a hermetic terminal 410 as an external power source are mounted in a socket hole of the sealed container 42 in the inverter case 409. The airtight terminal 410 is electrically connected to the inverter device 408 via an inverter-side connector 411 within the inverter case 409. The airtight terminal 410 is electrically connected to the coil 402 of the stator 49 inside the airtight container 42a via a connection portion 412 made of an electric wire or a connector of the motor 46. That is, when the coil 402 of the motor 46 is energized from the inverter device 408 through the airtight terminal 410, the rotor 48 rotates, and the compression mechanism 45 operates through the rotary shaft 47.
As shown in fig. 4, the vehicle-mounted electric compressor 40 of the present embodiment includes: a compression mechanism 45; a motor 46, the motor 46 driving the compression mechanism 45; an inverter device 408, the inverter device 408 driving the motor 46; hermetic containers 41 and 42, the hermetic containers 41 and 42 housing a motor 46 and a compression mechanism 45; an inverter case 409, the inverter case 409 being joined to the sealed containers 41 and 42 and accommodating the inverter device 408; and airtight terminals 410, the airtight terminals 410 being provided in the hermetic containers 41 and 42 and electrically connecting the inverter device 408 and the motor 46.
As shown in fig. 1 or 2, the airtight terminal 410 includes: lead members 11, 21, the lead members 11, 21 being formed of a conductive material; outer ring bases 12, 22, the outer ring bases 12, 22 holding the lead members 11, 21; insulating materials 13, 23, the insulating materials 13, 23 are arranged between the lead members 11, 21 and the outer ring bases 12, 22, and insulate the lead members from each other; and cover members 14, 24, the cover members 14, 24 being fixed to one surface of the outer ring bases 12, 22.
The cover members 14, 24 have peripheral wall portions 14b or 24b, 24d surrounding the exposed portions 15, 25 of the lead members 11, 21. The electric wires or connectors of the motor 46 are connected to the exposed portions 15, 25 through the connecting portion 412. The inside of the peripheral wall portion is filled with a sealing resin having refrigerant resistance and oil resistance. Provided is an electric compressor for vehicle mounting, wherein exposed portions 15, 25 and a connecting portion 412 are sealed in a sealing resin so that the exposed portions 15, 25 and the connecting portion 412 are covered so as not to come into contact with a refrigerant and a lubricating oil.
As shown in fig. 5, airtight terminal 50 of the present embodiment is attached to hermetic container 502. A motor is housed inside the closed casing 502. The lead member 51 of the airtight terminal 50 is electrically connected through a connection portion 512 constituted by an electric wire of a motor or a mold type connector. The inside of the peripheral wall portion 54d is filled with a sealing resin 54c having refrigerant resistance and oil resistance, and the entire energized portion such as the connection portion 512 is sealed in the sealing resin. The solidified sealing resin covers the current-carrying portion such as the connection portion 512 so as not to contact the refrigerant and the lubricating oil. Hermetic terminal 50 is fixed to hermetic container 502 by screw 500 or the like in a state where the lead member is inserted into insertion hole 510 of hermetic container 502. In fig. 5 (a), the lead member 51 hidden by the cover member 54 and the connection portion 512 of the connector connected to the lead member 51 are shown by broken lines.
Examples
As shown in fig. 1, the airtight terminal 10 of embodiment 1 of the present disclosure includes: a lead member 11 of Fe-Cr alloy; an iron outer ring base 12, the outer ring base 12 holding the lead member 11; an insulating material 13 made of soda barium glass, the insulating material 13 being provided between the lead member 11 and the outer ring base 12 and insulating the lead member 11 and the outer ring base 12 from each other; and a cover member 14a of insulating plastic, the cover member 14a being fixed to one surface of the outer ring base 12 by an epoxy resin of thermosetting resin.
The cover member 14a has a peripheral wall portion 14b that surrounds the exposed portion 15 of the lead member 11 in a rectangular shape. The cover member 14a is made of an electrically insulating plastic material having refrigerant resistance and oil resistance. In the case of the motor-driven compressor, the cover member 14a is disposed inside a closed container that houses the motor.
The rear side of the lead member 11 penetrates the cover member 14a, and the cover member 14a is fixed so as to cover a part of the outer ring base 12. The rear side of the lead member 11 is exposed inside the peripheral wall portion 14b. The cover member 14a entirely covers the back side current-carrying portion including the connection portion of the electric wire or the connector of the motor electrically connected to the lead member 11. The outer ring base 12 has a fastening hole 100.
As shown in fig. 2, hermetic terminal 20 according to embodiment 2 of the present disclosure includes three lead members 21, an outer ring base 22 made of iron, an insulating material 23 made of soda barium glass, and a cover member made of plastic.
The three lead members 21 are respectively constituted by a lead 21b of Fe — Cr alloy and an electrode plate 21a connected to one side of the lead 21 b. The lead wires 21b of the lead member 21 penetrate the outer ring base 22. The lead member 21 is held by the outer ring base 22. An insulating material 23 is provided between the lead wire 21b and the outer ring base 22 and insulates therebetween.
The cover member 24 is provided on the outer ring base 22, and covers the lead 21b and the insulating material 23. An internal space surrounded by the outer ring base 22 and the cover member 24 is filled with a curable resin 24c. The cover member 24 is fixed to the outer ring base 22 by the curable resin 24c.
In the connection method according to embodiment 3 of the present disclosure, as shown in fig. 3, first, a connection portion of a motor such as a wire or a bus bar is connected to an exposed portion of a lead member surrounded by a rectangular peripheral wall portion of an airtight terminal (electrical connection step 31). Next, the interior of the peripheral wall portion is filled with an epoxy sealing resin (resin filling step 32). The epoxy sealing resin is cured (resin curing step 33). Thereafter, the hermetic terminal and the motor components such as the stator are assembled to form the motor for driving the electric compressor for vehicle mounting (motor assembling step 34).
As shown in fig. 4, a vehicle-mounted electric compressor 40 according to embodiment 4 of the present disclosure includes: a compression mechanism 45; a motor 46, the motor 46 driving the compression mechanism 45; an inverter device 408, the inverter device 408 driving the motor 46; hermetic containers 41 and 42, the hermetic containers 41 and 42 housing a motor 46 and a compression mechanism 45; an inverter case 409, the inverter case 409 being joined to the sealed container and accommodating the inverter device 408; and an airtight terminal 410, the airtight terminal 410 being provided in the sealed container and electrically connecting the inverter device 408 and the motor 46.
As shown in fig. 2, the airtight terminal 410 includes: a lead member 21, the lead member 21 being formed of a conductive material; an outer ring base 22, the outer ring base 22 holding the lead member 21; an insulating material 23, the insulating material 23 being provided between the lead member 21 and the outer ring base 22 to insulate therebetween; and a cover member 24, the cover member 24 being fixed to one surface of the outer ring base 22.
The cover member 24 has peripheral wall portions 24b and 24d that surround the exposed portion 25 of the lead member 21 in a rectangular shape. The mold type connector of the motor 46 is connected with the exposed portion 25 through the connection portion 412. The inside of the peripheral wall portions 24b and 24d is filled with a sealing resin having refrigerant resistance and oil resistance. Provided is an electric compressor for vehicle mounting, wherein all of an exposed portion 25 and a connecting portion 412 are sealed in a sealing resin so that the exposed portion 25 and the connecting portion 412 are not in contact with a refrigerant and a lubricating oil.
Fig. 5 shows the periphery of the mating part of the airtight terminal 410 of embodiment 4. Hermetic terminal 410 is attached to hermetic container 502. The sealed container 502 houses a motor therein. The lead member is electrically connected with a molded-type connector 511 of the motor. The rectangular peripheral wall portion 54d is filled with a sealing resin 54c having refrigerant resistance and oil resistance. The energized portion including the connection portion 512 is sealed in the sealing resin 54c. The energized portion is covered with the sealing resin 54c so as not to contact the refrigerant and the lubricating oil. The airtight terminal 410 is inserted into the insertion hole 510 of the hermetic container 502, and is fastened and mounted by the screw 500.
The lead member of the hermetic terminal of the present disclosure can apply a desired plating coating on the surface thereof. Any metal material may be used for the lead member and the outer ring base as long as the metal material can be used for the airtight terminal. The alloy is not limited to Fe-Cr alloy, and for example, fe-Ni alloy, carbon steel, copper alloy, aluminum alloy, etc. may be used.
The insulating material described in the embodiment may be any material as long as it can electrically insulate and hermetically seal the lead member and the metal base. Not limited to the soda barium glass of the embodiment, any glass material or resin sealing material or ceramic material can be used. For example, if desired, a portion of the insulating material may also be formed of a different glass material for the insulating material. If necessary, a part or all of the glass material may be replaced with a resin material such as epoxy resin.
It should be understood that although specific embodiments of the present disclosure have been described, the embodiments of the present disclosure are illustrative in all respects and are not to be construed as limiting. The scope of the present disclosure is indicated by the appended claims, and all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein.
Industrial applicability of the invention
The present disclosure can be used for an airtight terminal, particularly an airtight terminal for vehicle mounting.
Description of the symbols
10. 20, 50, 410 hermetic terminals; 11. 21, 51 lead members; 12. 22 an outer ring base; 13. 23 an insulating material; 14. 14a, 24, 54 cover members; 14b, 24d, 54d peripheral wall portions; 15. 25 an exposed part; 21a an electrode plate; 21b a lead wire; 24c a curable resin; 31 an electrical connection step; 32 resin filling step; 33 a resin curing step; 34 motor assembling procedure; 40 an electric compressor; 41. 42, 502 closed container; 42a inside; 43 suction inlet; a 44 discharge port; 45 a compression mechanism; 46 motor; 47 a rotating shaft; 48 rotors; 49 a stator; 54c a sealing resin; 100. 200 holes; 401 permanent magnets; 402 coils; 403 fixing a scroll; 404 a movable scroll; 405 a compression chamber; 406 an eccentric bushing; 407 an eccentric pin; 408 an inverter device; 409 inverter housing; 411. 511 a connector; 412. 512 a connecting part; 500 screws and 510 are inserted into the holes.
Claims (10)
1. An airtight terminal comprising:
a lead member formed of a conductive material;
an outer ring base that holds the lead member;
an insulating material disposed between the lead member and the outer ring base and insulating the lead member from the outer ring base; and
a cover member fixed to at least one surface of the outer ring base,
an end portion of the lead member has an exposed portion exposed from the insulating material,
the cover member has a peripheral wall portion surrounding the exposed portion of the lead member.
2. The hermetic terminal according to claim 1,
the cover member is made of an electrically insulating material having refrigerant resistance and oil resistance.
3. The hermetic terminal according to claim 1 or 2,
the cover member is fixed to the outer ring base with a curable resin.
4. The hermetic terminal according to any one of claims 1 to 3,
the peripheral wall portion of the cover member surrounds the periphery of the exposed portion in a rectangular shape.
5. The hermetic terminal according to any one of claims 1 to 4,
the cover member has a peripheral wall portion which is entirely or partially detachable.
6. An electric compressor comprising:
the hermetic terminal of any one of claims 1 to 5;
a compression mechanism;
a motor that drives the compression mechanism;
an electric wire connecting the motor and the airtight terminal;
an inverter device that drives the motor;
a hermetic container that accommodates the motor and the compression mechanism;
an inverter case that is joined to the hermetic container and houses the inverter device;
a connection portion that electrically connects the electric wire and the exposed portion; and
a sealing resin filled in the inside of the peripheral wall portion,
the exposed portion and the connecting portion are sealed in the sealing resin.
7. Motor compressor according to claim 6,
the connecting portion has a connector provided at an end of the electric wire and connecting the electric wire with the exposed portion of the lead member.
8. A method for connecting a plurality of optical fibers,
the connection method is a connection method of connecting the airtight terminal according to any one of claims 1 to 5 with an electric wire of an electric compressor,
the motor-driven compressor includes: a compression mechanism; a motor that drives the compression mechanism; an electric wire connecting the motor and the airtight terminal; an inverter device that drives the motor; a hermetic container that houses the motor and the compression mechanism; an inverter case that is joined to the hermetic container and accommodates the inverter device; and a connecting portion electrically connecting the electric wire and the exposed portion,
the connection method comprises the following steps:
connecting the electric wire of the motor to the exposed portion of the lead member surrounded by the peripheral wall portion of the airtight terminal through the connecting portion;
a step of filling the peripheral wall portion with a sealing resin and sealing the exposed portion and the connection portion in the sealing resin; and
and curing the sealing resin.
9. The connecting method according to claim 8,
the method further includes a step of assembling each component constituting the motor after the step of curing the sealing resin.
10. The connecting method according to claim 8 or 9,
a part or the whole of the peripheral wall portion is configured to be detachable,
a step of attaching a part or all of the removed peripheral wall portion after the step of connecting by the connecting portion,
the step of filling the sealing resin is performed after the step of attaching a part or all of the peripheral wall portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020072013A JP7349955B2 (en) | 2020-04-14 | 2020-04-14 | Airtight terminal, electric compressor, and method for sealing the wiring part of its airtight terminal |
| JP2020-072013 | 2020-04-14 | ||
| PCT/JP2021/015151 WO2021210528A1 (en) | 2020-04-14 | 2021-04-12 | Airtight terminal, electric compressor using same, and connection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115428264A true CN115428264A (en) | 2022-12-02 |
Family
ID=78084244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180027857.0A Pending CN115428264A (en) | 2020-04-14 | 2021-04-12 | Hermetic terminal, electric compressor using the same, and connection method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7349955B2 (en) |
| CN (1) | CN115428264A (en) |
| DE (1) | DE112021000717T5 (en) |
| WO (1) | WO2021210528A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024080465A1 (en) * | 2022-10-14 | 2024-04-18 | 한온시스템 주식회사 | Electric compressor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3721948A (en) * | 1972-03-02 | 1973-03-20 | Gen Electric | Terminal assembly |
| JPH05321840A (en) * | 1992-05-25 | 1993-12-07 | Sanyo Electric Co Ltd | Sealed terminal device for compressor |
| JP3685091B2 (en) | 2001-06-08 | 2005-08-17 | 松下電器産業株式会社 | Compressor with built-in electric motor and mobile vehicle equipped with it |
| JP2004103272A (en) | 2002-09-05 | 2004-04-02 | Ubukata Industries Co Ltd | Airtight terminal unit |
| JP5278956B2 (en) | 2009-04-08 | 2013-09-04 | エヌイーシー ショット コンポーネンツ株式会社 | High pressure-resistant and airtight terminal and manufacturing method thereof |
| JP5252006B2 (en) | 2011-03-08 | 2013-07-31 | 株式会社豊田自動織機 | Electric compressor |
| US9689504B2 (en) | 2013-02-27 | 2017-06-27 | Zhejiang Sanhua Climate And Appliance Controls Group Co., Ltd | Electronic expansion valve and connection assembly therefor |
| CN206098769U (en) | 2016-09-07 | 2017-04-12 | 深圳市南方源芯电气有限公司 | Vehicle air conditioner compressor wiring board electric current conduction device |
-
2020
- 2020-04-14 JP JP2020072013A patent/JP7349955B2/en active Active
-
2021
- 2021-04-12 DE DE112021000717.3T patent/DE112021000717T5/en active Pending
- 2021-04-12 CN CN202180027857.0A patent/CN115428264A/en active Pending
- 2021-04-12 WO PCT/JP2021/015151 patent/WO2021210528A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JP7349955B2 (en) | 2023-09-25 |
| DE112021000717T5 (en) | 2023-03-02 |
| WO2021210528A1 (en) | 2021-10-21 |
| JP2021170428A (en) | 2021-10-28 |
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Effective date of registration: 20240122 Address after: Germany Mainz Applicant after: SCHOTT Corp. Country or region after: Germany Address before: Shiga Applicant before: Short (Japan) Co.,Ltd. Country or region before: Japan |