CN112467450A - Airtight terminal - Google Patents
Airtight terminal Download PDFInfo
- Publication number
- CN112467450A CN112467450A CN202010925564.1A CN202010925564A CN112467450A CN 112467450 A CN112467450 A CN 112467450A CN 202010925564 A CN202010925564 A CN 202010925564A CN 112467450 A CN112467450 A CN 112467450A
- Authority
- CN
- China
- Prior art keywords
- outer ring
- airtight
- spike
- metal outer
- terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 150
- 239000002184 metal Substances 0.000 claims abstract description 150
- 239000011810 insulating material Substances 0.000 claims abstract description 39
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000007769 metal material Substances 0.000 claims abstract description 13
- 230000001154 acute effect Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 239000011135 tin Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000003780 insertion Methods 0.000 description 13
- 230000037431 insertion Effects 0.000 description 13
- 239000011521 glass Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910052788 barium Inorganic materials 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000007747 plating Methods 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 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
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000005355 lead glass Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 229910000838 Al alloy 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
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
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Images
Classifications
-
- 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
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
-
- 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
- H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
- H01R13/74—Means for mounting coupling parts in openings of a panel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Motor Or Generator Frames (AREA)
- Compressor (AREA)
Abstract
The invention provides an airtight terminal, which does not need to use a gasket in an airtight terminal for a vehicle-mounted electric compressor. The airtight terminal has: a metal outer ring (13) having a through hole (11) provided for screw fixation and a seal hole (12) arranged linearly; a lead wire (14) inserted through the seal hole (12) of the metal outer ring (13); and an insulating material (15) that seals the metal outer ring (13) and the lead (14), wherein the metal outer ring (13) is made of a material harder than the metal material that forms the airtight container of the external device, and the predetermined surface of the metal outer ring (13) that forms the contact surface when the airtight terminal is attached to the external device has a spike (16), and the spike (16) is provided so as to surround the outer periphery of the insulating material (15) that seals the lead (14) of the metal outer ring (13), and is provided so that a part of the metal outer ring (13) protrudes and at least the protruding tip thereof is formed in an acute angle shape.
Description
Technical Field
The present invention relates to an airtight terminal, and more particularly, to an airtight terminal used in an in-vehicle electric compressor.
Background
The airtight terminal is a terminal in which a lead wire is hermetically sealed to an insertion hole of a metal ring or an outer metal ring via a glass insulating material, and is used when supplying an electric current to an electric device or an element housed in an airtight container or when deriving a signal from the electric device or the element to the outside. For example, as shown in WO2010/117000 (patent document 1), an airtight terminal for a compressor used in a refrigerator, an air conditioner, or the like uses an outer metal ring having 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 cylindrical portions forming lead sealing holes extending inward from the top plate portion. In the lead sealing holes of the metal outer ring, leads sealed with a sealing glass insulating material are hermetically sealed.
In a hybrid vehicle, for the original purpose of reducing the influence of the engine on the environment, there is a configuration in which the engine is stopped when the vehicle is temporarily stopped by a signal or the like. In such a case, if a compressor driven by an engine is used, the air conditioner is stopped every time the vehicle is stopped, which is particularly problematic in summer, winter, extremely cold, and extremely hot places. Therefore, an electric compressor in which a motor is incorporated in an iron container is used. The electric compressor has the same compression mechanism as a compressor for an indoor air conditioner. However, in the mechanical arrangement of the engine room of the hybrid vehicle or the electric vehicle, the arrangement of the devices in the engine room is studied in response to a request for reducing the vehicle weight, and the space saving is limited, and it is difficult to secure a sufficient space for installing the electric compressor in the engine room. Therefore, for example, the airtight terminal of the vehicle-mounted electric compressor described in patent document 2 and the like is not a system in which three terminals are arranged at intervals of 120 ° on the same circumference as the airtight terminal for the indoor air conditioner, but a system in which three terminals are arranged linearly and the volume around the socket is reduced.
Patent document 1: WO2010/117000 publication
Patent document 2: japanese laid-open patent publication No. 2012-186969
In hybrid vehicles and electric vehicles, compressors driven by electric motors, that is, compressors with built-in electric motors in which a compression mechanism and an electric motor are built in an airtight container as in indoor air conditioners, are used instead of compressors driven by engines. It is preferable that these in-vehicle electric compressors be installed in a narrow engine room, and that these in-vehicle electric compressors be compact and lightweight while saving as much space as possible. Since the motor is driven by the airtight terminal attached to the attachment hole of the airtight container, the airtight terminal used is also arranged in a linear shape with pins in series as shown in fig. 1, which is advantageous in space saving. An airtight terminal for an in-vehicle electric compressor is screwed into a mounting hole of an airtight container in which a motor is housed, and conventionally, when the airtight terminal is mounted to the airtight container, it is necessary to separately sandwich a metal gasket between the airtight terminal and the airtight container and mount the airtight terminal.
Disclosure of Invention
An object of the present invention is to provide an airtight terminal for an in-vehicle electric compressor, which does not require a gasket.
According to the present invention, there is provided an airtight terminal characterized by a metal outer ring having a sealing hole; a lead wire inserted through the sealing hole of the metal outer ring; and an insulating material hermetically sealing the metal outer ring and the lead, wherein a spike portion for press-in sealing is provided on a contact surface of the metal outer ring and an external electrical device. The contact surface here means a contact surface of the metal outer ring that contacts the airtight container of the electric device to which the airtight terminal is attached, and the spike portion is constituted by a hard material projection provided on the contact surface of the metal outer ring. By providing the spike portion on the contact surface with the airtight container of the electric device, the spike portion can be press-fitted into the terminal attachment surface of the airtight container and fixed only by fastening the airtight terminal to the airtight container made of a relatively soft material such as aluminum die-cast. As a result, when the hermetic terminal of the present invention is directly attached to the hermetic container in which the electric compressor is accommodated, the sharp pointed portion of the hermetic terminal is pressed into the hermetic container, and airtightness can be ensured. According to the present invention, a metal gasket, which has been conventionally required for mounting an airtight terminal, is not required. In addition, in one aspect of the present invention, since the spike portion only needs to be provided in the metal outer ring of the airtight terminal, the airtight terminal can be realized without increasing the number of members of the airtight terminal. Therefore, the present invention contributes to simplification of the assembly process of the electric compressor and can reduce the number of parts, thereby providing an economical effect.
Drawings
Fig. 1 is a view showing an airtight terminal 10 according to the present invention, in which fig. 1 (a) is a plan view, fig. 1 (b) is a front sectional view, and fig. 1 (c) is a bottom view.
Fig. 2 is a view showing an airtight terminal 20 according to the present invention, in which fig. 2 (a) is a plan view, fig. 2 (b) is a front sectional view, and fig. 2 (c) is a bottom view.
Fig. 3 is a process flow chart of the method 30 for mounting the airtight terminal of the present invention.
Fig. 4 is a partial sectional view around the insertion hole of the airtight container 40 of the present invention.
Fig. 5 is a partial sectional view around the insertion hole of the airtight container 50 of the present invention.
Description of the reference numerals:
Detailed Description
As shown in fig. 1 to 2, the hermetic terminal of the present invention includes: a metal outer ring having at least one seal bore; a lead wire inserted through the sealing hole of the metal outer ring; and an insulating material sealing the metal outer ring and the lead wire, wherein a spike (spike) portion for press-fitting sealing is provided on a contact surface of the metal outer ring when the airtight terminal is mounted on another electric device. When the airtight terminal is mounted to an electric device by screwing or the like, the spike portion can pierce into a mounting portion of the electric device made of a soft material softer than the electric device, and the mounting portion of the airtight terminal and the electric device can be sealed airtight without a gap therebetween via a rubber sealing member such as an O-ring.
In one embodiment of the hermetic terminal according to the present invention, the spike portion is provided so that a part of the metal outer ring protrudes from the flat surface, and any material and structure can be used as long as sealing can be performed without a gap without leaking gas or liquid when the spike portion is pressed and fixed to a predetermined wall surface of a mounting portion of an electrical device to which the hermetic terminal is mounted by means of screw fastening or the like. For example, the spike portion may be formed of a spike piece made of a harder material different from the outer metal ring and hermetically fixed to the outer metal ring, and the spike piece attached to the outer metal ring may be formed of a hard metal such as tungsten or a ceramic material. Preferably, the shape of the spike portion is a structure in which at least a protruding tip portion thereof is formed in an acute angle shape. The spike may cover at least the pressed portion with a cap made of a softer metal material. The cap is made of, for example, a soft metal plating film or a solder film, and can assist the spike portion to enter the container while closing the gap by its ductility, thereby preventing positional deviation when the airtight terminal is placed or pressed into the container, facilitating smooth press-fitting, and fixing the spike portion so that the spike portion does not easily fall off from the press-fitting portion of the electric device.
As shown in fig. 1, the hermetic terminal 10 of the present invention includes: a metal outer ring 13 having a through hole 11 and a seal hole 12 provided for screw fixation; a lead wire 14 inserted through the seal hole 12 of the metal outer ring 13; and an insulating material 15 for sealing the metal outer ring 13 and the lead 14, wherein the metal outer ring 13 is made of a material harder than a metal material of an electric device to which the metal outer ring 13 is attached, and the spike portion 16 is provided on at least a predetermined surface of the metal outer ring 13 which is a contact surface when the airtight terminal is attached to the electric device, and the spike portion 26 is provided so as to protrude from a surface of the metal outer ring 23.
The spike 16 is provided so as to surround the outer periphery of the insulating material 15 that seals the lead 14 of the metal outer ring 13, and a part of the metal outer ring 13 is provided so as to protrude. When the hermetic terminal 10 is mounted in an electrical device, the terminal is fastened while the spike portion 16 is pressed into an outer wall surface of the electrical device. Since the insulating material 15 for sealing the lead 14 and the terminal mounting hole provided on the outer wall surface of the electric device is disposed inside the pointed portion 16, the inside surrounded by the pointed portion 16 can be air-tightly separated from the outside. The hermetic terminal 10 is inserted into a mounting hole of an electric device after connecting a lead wire to the electric device, and is fastened by screwing or the like, whereby the hermetic terminal can be mounted easily and quickly. Preferably, the spike portion 16 is provided in such a manner as to protrude a part of the metal outer ring 13, and is provided in such a manner as to surround the outer periphery of the insulating material 15 sealing the lead 14 of the metal outer ring 13, and is provided such that at least a protruding tip portion thereof is formed in an acute angle shape. The through hole 11 is provided for fastening and pressure-fixing the airtight terminal of the present invention to an airtight container or the like of an electrical apparatus by means of screwing or the like, and may be fixed by press-fitting to a wall of the airtight container or the like which is in contact with the metal outer ring of the airtight terminal, or may be replaced with another form such as a lid or the like which covers at least an outer peripheral edge of the metal outer ring and an outer peripheral edge of the insertion hole in a frame-like manner to fix the airtight terminal to the airtight container so that the metal outer ring of the airtight terminal does not fall off from the insertion hole.
As shown in fig. 2, hermetic terminal 20 of the present invention is characterized by comprising: a metal outer ring 23 having a through hole 21 and a seal hole 22 provided for screw fixation; a lead wire 24 inserted through the seal hole 22 of the metal outer ring 23; and an insulating material 25 for sealing the metal outer ring 23 and the lead 24, wherein the metal outer ring 23 has a spike portion 26 on a predetermined surface of the metal outer ring 23 which is a contact surface at least when the hermetic terminal is mounted to another electric device, the spike portion 26 is made of a material different from the metal outer ring 23 and is made of a material harder than the metal material of the electric device, and the spike portion 26 is provided so as to protrude from the surface of the metal outer ring 23.
When the hermetic terminal 20 is attached to an electric device such as a hermetic container of an electric compressor, the spike 26 is screwed to the outer wall surface of the electric device while being pressed into the outer wall surface. Since the insulating material 25 for sealing the lead 24 and the terminal mounting hole provided in the outer wall surface of the electric device is disposed inside the pointed portion 26, the inside surrounded by the pointed portion 26 can be air-tightly separated from the outside. The hermetic terminal 20 is inserted into the mounting hole of the electric device after the lead wire is connected to the electric device, and the hermetic terminal can be mounted simply and quickly by simply screwing. Preferably, the spike portion 26 is provided in such a manner as to protrude a part of the metal outer ring 23, and is provided in such a manner as to surround the outer periphery of the insulating material 25 sealing the lead wires 24 of the metal outer ring 23, and is provided such that at least the protruding tip portion thereof is formed in an acute angle shape. The through hole 21 is provided for fastening and pressure-fixing the airtight terminal of the present invention to an airtight container or the like of an electrical apparatus by means of screwing or the like, and may be fixed by press-fitting to a wall of the airtight container or the like which is in contact with the outer metal ring of the airtight terminal, or may be replaced with another form such as a lid with a screw hole for fixing the airtight terminal to the airtight container by covering at least an outer peripheral edge of the outer metal ring and an outer peripheral edge of the insertion hole in a frame-like manner so that the outer metal ring of the airtight terminal does not fall off from the insertion hole.
As shown in fig. 3, a method 30 for mounting an airtight terminal according to the present invention is a method for mounting the airtight terminal 10 or the airtight terminal 20, the method 30 including: (1) the preparation step 31 is to prepare an airtight terminal and an airtight container of the present invention, in which an electric device to which the airtight terminal is attached is built. The preparation step 31 is a step of preparing an airtight terminal and an electric device to which the airtight terminal is attached, the airtight terminal including: a metal outer ring having a through hole and a sealing hole provided for screw fixation; the lead is inserted through the sealing hole of the metal outer ring; and an insulating material sealing a metal outer ring and a lead wire, the metal outer ring being made of a material harder than a metal material of an electric device to which the metal outer ring is attached, the metal outer ring having a spike portion 16 at least on a predetermined surface of the metal outer ring which becomes a contact surface when the airtight terminal is attached to the electric device, the spike portion 26 being provided so as to protrude from a surface of the metal outer ring 23; (2) an electrical connection step 32 of electrically connecting the lead wire of the airtight terminal to a wiring cord of the electrical device; (3) a mounting step 33 of mounting the airtight terminal on a through hole provided in an airtight container of the electric apparatus; (4) the terminal mounting step 34 is a step of fixing the airtight terminal to the airtight container by screwing, and pressing the spike portion of the airtight terminal into the airtight container to pierce the mounting portion of the airtight container, thereby hermetically sealing the airtight terminal and the electric device built in the airtight container.
As shown in fig. 4, the airtight container 40 of the present invention is an airtight container having the airtight terminal 10 described above, and the airtight container 40 includes: a container 401 for accommodating an electric device such as a motor; and an airtight terminal 403 airtightly fixed to a plug hole 402 penetrating the container body 401, connected to the electric wiring, and electrically connected to an external device disposed outside the container body 401, the airtight terminal 403 including: a metal outer ring 43 having a through hole 41 and a seal hole 42 provided for spirally fixing the container body 401; a lead wire 44 inserted through the seal hole 42 of the metal outer ring 43 and electrically connected to a wiring cord 404 of the electric device; and an insulating material 45 for sealing the metal outer ring 43 and the lead wire 44, wherein the metal outer ring 43 has a spike 46 made of a material harder than the metal material constituting the container body 401 at least on a fixing surface of the airtight terminal 403 and the container body 401, and at least a tip end portion of the spike 46 protrudes from a surface of the metal outer ring 43 toward the container body 401 side and is embedded therein. In order to make the spike 46 less likely to fall off the container body 401, a projection or a folded-back portion for preventing the fall-off may be provided at the pressed portion of the spike 46. The through hole 41 is provided for fastening and pressure-fixing the airtight terminal of the present invention to an airtight container or the like of an electrical apparatus by means of screwing or the like, and may be fixed by press-fitting to a wall of the airtight container or the like which is in contact with the metal outer ring of the airtight terminal, or may be replaced with another form such as a cover which covers at least an outer peripheral edge of the metal outer ring and an outer peripheral edge of the insertion hole in a frame shape and fixes the airtight terminal to the airtight container so that the metal outer ring of the airtight terminal does not fall off from the insertion hole.
As shown in fig. 5, the airtight container 50 of the present invention is an airtight container having the airtight terminal 20 described above, and the airtight container 50 includes: a container body 501 for accommodating an electric device such as a motor; and an airtight terminal 503 airtightly fixed to the insertion hole 502 penetrating the container body 501, wired to the electric device, and electrically connected to an external device disposed outside the container body 501, the airtight terminal 503 including: a metal outer ring 53 having a through hole 51 and a seal hole 52 provided for spirally fixing the container body 501; a lead wire 54 inserted through the seal hole 52 of the metal outer ring 53 and electrically connected to the wiring cord 504 of the electrical device; and an insulating material 55 for sealing the metal outer ring 53 and the lead 54, wherein the metal outer ring 53 has a spike portion 56 formed of a material different from the metal outer ring 53 and formed of a spike sheet 561 harder than the metal material forming the container body 501 at least on a predetermined surface of the metal outer ring 53 which is a contact surface when the airtight terminal 503 is mounted to the electric device, and at least a tip portion of the spike portion 56 protrudes from the surface of the metal outer ring 53 to the container body 501 side and is embedded therein. In order to make the spike 56 less likely to fall off the container body 501, a projection or a folded-back portion for preventing the fall-off may be provided at the pressed portion of the spike 56. The through hole 51 is provided for fastening and pressure-fixing the airtight terminal of the present invention to an airtight container or the like of an electrical apparatus by means of screwing or the like, and may be fixed by press-fitting to a wall of the airtight container or the like which is in contact with the outer metal ring of the airtight terminal, or may be replaced with another form such as a lid with a screw hole for fixing the airtight terminal to the airtight container so that the outer metal ring of the airtight terminal does not fall off the insertion hole by covering at least an outer peripheral edge of the outer metal ring and an outer peripheral edge of the insertion hole in a frame shape.
The surface of the spike of the present invention may be covered with a covering cap made of a metal material softer than the material of the spike, for example, a plating film of gold, silver, tin, palladium or a solder alloy of a soft metal. If the spike portion can ensure airtightness with the container body of the external device to be press-fitted, even if a part of the metal outer ring is provided to protrude, another material different from the metal outer ring may be attached as a spike piece to a predetermined portion of the metal outer ring. The cap stabilizes the press-fitting position and assists smooth press-fitting when the spike of the airtight terminal of the present invention is press-fitted into the wall of the airtight container, and improves airtightness by sealing the gap between the spike and the container body after press-fitting. The cap is partially removed, and the spike is gradually pressed into the container wall, pulled by the container wall, and discharged to the periphery of the pressed portion.
In the present specification, the airtight terminal of the three terminals is exemplified, but any airtight terminal may be used as long as it is an airtight terminal in which a lead glass is sealed to an outer ring, and the airtight terminal is not limited to the illustrated airtight terminal.
Examples
As shown in fig. 1, an airtight terminal 10 according to embodiment 1 of the present invention includes: a metal outer ring 13 of alloy steel having a through hole 11 provided for screw fixation and a plurality of seal holes 12 arranged linearly; a plurality of Fe-Cr iron-based alloy lead wires 14 inserted through the seal holes 12 of the outer metal ring 13; and an insulating material 15 of soda-barium glass for sealing the metal outer ring 13 and the lead 14, wherein the metal outer ring 13 is made of a material harder than an aluminum die-cast airtight container to which the airtight terminal is attached, a contact surface between the airtight container and the metal outer ring 13 has a spike 16 protruding from the contact surface, the spike 16 is provided so as to surround an outer periphery of the insulating material 15 for sealing the lead 14 of the metal outer ring 13, a tip end portion of the spike 16 is formed in an acute angle shape, and the spike 16 is covered with a cover cap 17 made of tin plating.
As shown in fig. 2, an airtight terminal 20 according to embodiment 2 of the present invention includes: a metal outer ring 23 of carbon steel having a through hole 21 provided for screwing and a plurality of seal holes 22 arranged linearly; a plurality of Fe-Cr iron-based alloy lead wires 24 inserted through the seal holes 22 of the outer metal ring 23; and an insulating material 25 of soda-barium glass for sealing the metal outer ring 23 and the lead 24, wherein the metal outer ring 23 has a spike 26 on a contact surface with an aluminum die-cast airtight container to which the airtight terminal is attached, the spike 26 is composed of a tungsten spike piece 261 harder than the airtight container, the spike 26 is provided so as to protrude from a surface of the metal outer ring 23, and is provided so as to surround an outer periphery of the insulating material 25 for sealing the lead 24 of the metal outer ring 23, and a protruding tip portion thereof is formed in an acute angle shape, and the spike 26 is covered with a gold-plated cap 27.
As shown in fig. 3, a mounting method 30 of an airtight terminal according to embodiment 3 of the present invention is a mounting method of the airtight terminal 10 according to embodiment 1 or the airtight terminal 20 according to embodiment 1, the mounting method 30 including: (1) the preparation step 31 is to prepare an airtight terminal and an airtight container of the present invention, in which an electric device to which the airtight terminal is attached is built. The preparation step 31 is a step of preparing an airtight terminal having: a metal outer ring having a through hole provided for screw fixation and a plurality of seal holes arranged linearly; a plurality of leads inserted through the sealing holes of the metal outer ring; and an insulating material sealing the metal outer ring and the lead wire, wherein the metal outer ring has a spike portion on a predetermined surface of the metal outer ring, the spike portion is provided so as to surround an outer periphery of the insulating material sealing the lead wire of the metal outer ring, and a part of the metal outer ring is projected to form a projected tip portion in an acute angle shape, and the aluminum die-cast airtight container accommodates a motor compressor containing a refrigerant and a lubricant oil to which the airtight terminal is attached. (2) An electrical connection step 32 of electrically connecting the lead wire of the airtight terminal to a wiring cord of an electrical device housed in the airtight container; (3) a mounting step 33 of mounting the airtight terminal on a through hole provided in an airtight container of the electric apparatus; (4) and a terminal mounting step 34 of fixing the airtight terminal and the airtight container by screwing, and pressing the sharp pointed portion of the airtight terminal into the airtight container to pierce the mounting portion of the electric device, thereby hermetically sealing the electric device and the airtight terminal, which are built in the airtight container.
As shown in fig. 4, airtight container 40 of example 4 of the present invention is an airtight container in which airtight terminal 10 of example 1 was assembled by airtight terminal mounting method 30 of the present invention. The airtight container 40 includes: an aluminum die-cast container body 401 that houses a motor compressor containing a refrigerant and a lubricating oil; an airtight terminal 403 airtightly fixed to the insertion hole 402 penetrating the container body 401, connected to the motor-compressor wiring, and electrically connected to an external device disposed outside the container body 401, the airtight terminal 403 including: a metal outer ring 43 of alloy steel having a through hole 41 provided for screwing the container body 401 by a nut 406 and a plurality of seal holes 42 linearly arranged; a plurality of Fe — Cr iron-based alloy lead wires 44 inserted through the seal holes 42 of the outer metal ring 43 and electrically connected to the wiring cords 404 of the connector module 405 attached to the connector module 405 of the motor-compressor built in the container 401; and an insulating material 45 of soda-barium glass for sealing the metal outer ring 43 and the lead 44, wherein the metal outer ring 43 has a spike 46 made of an alloy steel harder than the aluminum die-cast material on a fixing surface of the airtight terminal 403 and the airtight container 401, and a tip portion of the spike 46 protruding from the metal outer ring 43 penetrates into a wall of the airtight container 401 and is fixed in an airtight manner. The spike 46 is provided so as to protrude a part of the metal outer ring 43 and surround the outer periphery of the insulating material 45 sealing the lead 44 of the metal outer ring 43, and the spike 46 is press-fitted into and screw-fastened to the outer wall surface of the airtight container 401 accommodating the electric device in an airtight manner. Since the insulating material 45 for sealing the terminal mounting hole provided on the outer wall surface of the electric device and the lead 44 is disposed inside the housing surrounded by the spike 46, the inside surrounded by the spike 46 can be air-tightly separated from the outside.
As shown in fig. 5, an airtight container 50 according to example 5 of the present invention is an airtight container in which an airtight terminal 20 according to example 2 is assembled by an airtight terminal mounting method 30 according to the present invention, and the airtight container 50 includes: an aluminum die-cast container body 501 that houses a motor compressor containing a refrigerant and a lubricating oil; an airtight terminal 503 airtightly fixed to a plug hole 502 penetrating the container 501, and wired to an external device disposed outside the container 501, the airtight terminal 503 including: a metallic outer ring 53 of carbon steel having a through hole 51 provided for screwing the container body 501 by a nut 506 and a plurality of seal holes 52 arranged linearly; a plurality of Fe — Cr iron-based alloy lead wires 54 inserted through the seal holes 52 of the metal outer ring 53 and electrically connected to the wiring cords 504 attached to the connector block 505 of the motor compressor built in the container body 501; and an insulating material 55 of soda-barium glass for sealing the metal outer ring 53 and the lead 54, wherein the metal outer ring 53 has a spike portion 56 formed of a ceramic spike 561 harder than the aluminum die-cast material on a fixing surface of the airtight terminal 503 and the airtight container 501, and the spike portion 56 is fixed in an airtight manner by penetrating a tip portion of the metal outer ring 53 projecting from the metal outer ring 56 into the wall of the container 501. The spike 56 is provided to protrude from the surface of the outer metal ring 53, so as to surround the outer periphery of the insulating material 55 that seals the lead wire 54 of the outer metal ring 53, and the spike 56 is pressed into the outer wall surface of the container body 501 and is screwed and fastened in an airtight manner to the outer wall surface. Since the insulating material 55 sealing the terminal mounting hole provided on the outer wall surface of the container body 501 and the lead 54 is disposed inside the package body surrounded by the pointed portion 56, the inside surrounded by the pointed portion 56 can be air-tightly separated from the outside.
The spikes of the above examples 1 to 4 were pressed against the container body of the electric device and screwed while piercing the surface of the container body. Thereby, a gap between the metal outer ring of the airtight terminal and the terminal mounting hole of the external device is closed to perform airtight sealing, and airtightness around the mounting portion of the container body of the external device and the metal outer ring is ensured. The airtight terminal of the present invention is capable of being easily and quickly mounted by inserting a lead wire into a terminal mounting hole of an external device after the lead wire is electrically connected to the external device and by screwing the lead wire.
The hermetic terminal of the present invention can further perform desired plating on the metal surface after sealing the lead glass to the metal outer ring. In addition, the lead wire described in the above embodiments may be made of any conductive metal material, and for example, the lead wire may be appropriately modified to an Fe — Ni alloy, carbon steel, copper alloy, aluminum alloy, or the like without being limited to an Fe — Cr alloy. Similarly, the insulating material described in the embodiments is not limited to soda-barium glass, and any glass material may be used as long as it can electrically insulate and hermetically seal the lead and the outer metal ring. The insulating material of the present invention may be formed of glass materials different from each other as needed, and a part or all of the glass materials may be replaced with a resin material such as epoxy resin, if further needed.
Industrial applicability of the invention
The present invention can be used for an airtight terminal, and particularly can be used for an airtight terminal for a vehicle.
Claims (19)
1. A hermetic terminal, wherein,
comprising:
a metal outer ring having a sealing bore;
a lead wire inserted through the sealing hole of the metal outer ring; and
an insulating material hermetically sealing the metal outer ring and the lead wire,
and a sharp thorn part for pressing and sealing is arranged on the contact surface of the metal outer ring and an external electric device.
2. The hermetic terminal of claim 1,
the spike is made of a material harder than a metal material constituting an airtight container to which the airtight terminal is attached.
3. The hermetic terminal according to claim 1 or 2,
the spike is configured to cause a portion of the metal outer ring to protrude from a plane.
4. The hermetic terminal according to any one of claims 1 to 3,
the spike part is arranged in a way that a spike sheet different from the metal outer ring is arranged on the metal outer ring.
5. The hermetic terminal of claim 4,
the spike sheet is made of hard metal such as tungsten or ceramic material.
6. The hermetic terminal according to any one of claims 1 to 5,
the spike part is formed with at least a protruding tip part thereof in an acute angle shape.
7. The hermetic terminal according to any one of claims 1 to 6,
the surface of the spike part is covered with a covering cap made of a metal material softer than the spike part.
8. The hermetic terminal of claim 7,
the covering cap is composed of a coating film of gold, silver, tin and palladium or a covering film of solder alloy.
9. The hermetic terminal according to any one of claims 1 to 8,
the spike portion is provided so as to surround an outer periphery of the insulating material that seals the lead of the metal outer ring.
10. A method of mounting a hermetic terminal, wherein,
the method comprises the following steps:
(1) a preparation step of preparing an airtight terminal and an electric device to which the airtight terminal is attached, the airtight terminal including: a metal outer ring having a sealing bore; a lead wire inserted through the sealing hole of the metal outer ring; the metal outer ring and the lead are hermetically sealed by an insulating material, and a sharp part for press-in sealing is arranged on the contact surface of the metal outer ring and the external electric device;
(2) an electrical connection step of electrically connecting the lead wire of the airtight terminal to a wiring cord of the electrical device;
(3) a mounting step of mounting the airtight terminal on a through hole provided in an airtight container of the electrical apparatus; and
(4) and a terminal mounting step of screwing the airtight terminal to the airtight container, and pressing the spike portion of the airtight terminal into the airtight container to pierce the mounting portion of the airtight container, thereby hermetically sealing the airtight terminal and the electric device built in the airtight container.
11. An airtight container in which, in a container,
comprising:
a container body accommodating the electric device; and
an airtight terminal airtightly fixed to a plug hole penetrating the container body, connected to the electric device by wiring, and electrically connected to an external device disposed outside the container body,
the airtight terminal has:
a metal outer ring having a sealing bore;
a lead wire inserted through the seal hole of the metal outer ring and electrically connected to a wiring cord of the electric device; and
an insulating material sealing the metal outer ring and the lead,
the metal outer ring has a spike portion for press-fitting and sealing at a contact surface with the electric device, and at least a tip end portion of the spike portion is embedded in the airtight container.
12. The airtight container according to claim 11,
the spike is made of a material harder than a metal material constituting an airtight container to which the airtight terminal is attached.
13. The airtight container according to claim 11 or 12,
the spike is configured to cause a portion of the metal outer ring to protrude from a plane.
14. The airtight container according to any one of claims 11 to 13 wherein,
the spike part is arranged in a way that a spike sheet different from the metal outer ring is arranged on the metal outer ring.
15. The airtight container according to claim 14,
the spike sheet is made of hard metal such as tungsten or ceramic material.
16. The airtight container according to any one of claims 11 to 15 wherein,
the spike part is formed with at least a protruding tip part thereof in an acute angle shape.
17. The airtight container according to any one of claims 11 to 16 wherein,
the surface of the spike part is covered with a covering cap made of a metal material softer than the spike part.
18. The airtight container according to claim 17,
the covering cap is composed of a coating film of gold, silver, tin and palladium or a covering film of solder alloy.
19. The airtight container according to any one of claims 11 to 18,
the spike portion is provided so as to surround an outer periphery of the insulating material that seals the lead of the metal outer ring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-162842 | 2019-09-06 | ||
| JP2019162842A JP7132195B2 (en) | 2019-09-06 | 2019-09-06 | airtight terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112467450A true CN112467450A (en) | 2021-03-09 |
Family
ID=74833341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010925564.1A Pending CN112467450A (en) | 2019-09-06 | 2020-09-04 | Airtight terminal |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7132195B2 (en) |
| CN (1) | CN112467450A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113540880A (en) * | 2021-07-09 | 2021-10-22 | 杭州海康威视数字技术股份有限公司 | Cable assembly and camera |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108604744A (en) * | 2016-08-12 | 2018-09-28 | 肖特（日本）株式会社 | The installation method of terminal, the framework with terminal and terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH033971Y2 (en) * | 1986-01-30 | 1991-01-31 | ||
| JP2005207328A (en) * | 2004-01-23 | 2005-08-04 | Toyota Industries Corp | Compressor |
-
2019
- 2019-09-06 JP JP2019162842A patent/JP7132195B2/en active Active
-
2020
- 2020-09-04 CN CN202010925564.1A patent/CN112467450A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108604744A (en) * | 2016-08-12 | 2018-09-28 | 肖特（日本）株式会社 | The installation method of terminal, the framework with terminal and terminal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113540880A (en) * | 2021-07-09 | 2021-10-22 | 杭州海康威视数字技术股份有限公司 | Cable assembly and camera |
| CN113540880B (en) * | 2021-07-09 | 2024-03-22 | 杭州海康威视数字技术股份有限公司 | Cable assembly and camera |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021044069A (en) | 2021-03-18 |
| JP7132195B2 (en) | 2022-09-06 |
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Application publication date: 20210309 |