[go: up one dir, main page]

EP0769794B1 - Schutzvorrichtung für elektrisches Bauteil - Google Patents

Schutzvorrichtung für elektrisches Bauteil Download PDF

Info

Publication number
EP0769794B1
EP0769794B1 EP19960116493 EP96116493A EP0769794B1 EP 0769794 B1 EP0769794 B1 EP 0769794B1 EP 19960116493 EP19960116493 EP 19960116493 EP 96116493 A EP96116493 A EP 96116493A EP 0769794 B1 EP0769794 B1 EP 0769794B1
Authority
EP
European Patent Office
Prior art keywords
overload relay
terminal cover
protection device
electrical component
section
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.)
Expired - Lifetime
Application number
EP19960116493
Other languages
English (en)
French (fr)
Other versions
EP0769794A1 (de
Inventor
Tatsuhiro c/o Matsushita El.Ind.Co Ltd Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0769794A1 publication Critical patent/EP0769794A1/de
Application granted granted Critical
Publication of EP0769794B1 publication Critical patent/EP0769794B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
    • H01H37/5436—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing mounted on controlled apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/002—Structural combination of a time delay electrothermal relay with an electrothermal protective relay, e.g. a start relay

Definitions

  • the present invention relates to an electrical component protection device as setforth in the preamble of claim 1.
  • a protection device of this kind is known from GB-A-2 104 732.
  • the aforementioned document discloses a supply and protection unit for an electrically powered, thermostatically controlled hermetic compressor of a thermostatically regulated refrigerator and comprises an electrically insulating support body adapted to be fixed to the casing of the compressor.
  • the support body is provided with cavities opening at one of its faces intended to face towards the compressor for slidably and removably inserting therein a thermally operated protection switch and a resistor with a positive temperatured co-efficient.
  • Connection means for the connection of the power supply, thermostat and compressor motor are incorporated into the unit.
  • the protection device further comprises a retainer bushing having an insulating property and an elasticity which is interposed between a top panel of a terminal cover and the protection switch and serves as a means for pressing the protection switch against the outer surface of the compressor.
  • FIG. 4 Another prior art electrical component protection device which is known to the applicants and takes a closed type compressor as an example of application is shown in figures 4 and 5.
  • a fixing bolt 51 is provided at an upper portion of an outer surface of a hermetic container 50 which constitutes a casing of the closed type compressor, and the fixing bolt 51 serves to fix a terminal cover 52 to an upper portion of the hermetic container 50 by screwing a nut 53.
  • a through hole 52a which extends vertically and through which the fixing bolt 51 is to penetrate is formed at the terminal cover 52.
  • the hermetic container 50 is provided with a sealed terminal 54, where a portion of the sealed terminal 54 is buried in a hole formed at a top panel of the hermetic container 50 and the other portion is made to protrude outwardly of the hermetic container 50.
  • the sealed terminal 54 has a plurality of connection terminals 55 which protrude upwardly.
  • the terminal cover 52 is formed of a material such as rubber or resin having an electrical insulating property and an elasticity, and it is internally provided with a terminal chamber 56 for housing therein the connection terminals 55 and a protector chamber 58 for housing therein an overload relay 57.
  • a coil spring 59 provided around the overload relay 57 is pressed by a stepped portion 60 of the terminal cover 52, by which the overload relay 57 adheres closely to the upper surface of the hermetic container 50.
  • the coil spring 59 is used as a means for pressing the overload relay 57, and it presses the periphery of the overload relay 57.
  • the operation of force applied from the coil spring 59 does not uniformly exert on the entire periphery of the overload relay 57. Therefore, a sufficient adhesion of the overload relay 57 to the upper surface of the hermetic container 50 cannot be secured, and this has caused a problem that the operation of the overload relay 57 becomes unstable.
  • the coil spring 59 has been used on condition that the overload relay 57 has a circular configuration. Therefore, the spring cannot be used when the relay has an oval configuration, and this means that the structure lacks versatility.
  • the present invention provides a protection device having a terminal cover for housing therein an electrical component and an overload relay, the terminal cover being mounted on an outer surface of an objective equipment to which it is to be mounted, wherein a plurality of ribs which serve as a means for pressing the overload relay against an outer surface of a compressor are formed integrally with the terminal cover on an inner surface of a housing section of the terminal cover for housing therein the overload relay, and the ribs are located in positions symmetrical about a center of the overload relay.
  • the ribs formed integrally with the terminal cover function to press the overload relay. Therefore, in regard to the state of abutment of the overload relay on the outer surface of the objective equipment to which it is to be mounted, the relay abuts with a uniform force on the entire abutment surface. For the above reasons, a sufficient adhesion of the overload relay to the outer surface of the objective equipment to which it is to be mounted can be secured to allow the operation of the overload relay to be stabilized. Furthermore, since the ribs can be arranged in arbitrary positions according to the configuration of the overload relay, there can be achieved a structure having a versatility superior to the prior art structure employing a coil spring.
  • a tip end of each rib fronting the overload relay is formed in an arc configuration.
  • the terminal cover can be set more securely and surely on the overload relay.
  • a retainer bushing having an insulating property and an elasticity is interposed between a top panel of the terminal cover and the overload relay while serving as a means for pressing the overload relay against the outer surface of the compressor.
  • the retainer bushing in a state in which the ribs hold down the periphery of the overload relay, the retainer bushing holds down the center portion of the overload relay.
  • the retainer bushing since the retainer bushing has an elasticity, it does not hinder the pressing operation of the ribs against the overload relay, and both the pressure force of the ribs and the pressure force of the retainer bushing exert effectively on the overload relay.
  • the above arrangement provides an electrical component protection device having a terminal cover in which the overload relay is made to more securely adhere closely to the outer surface of the objective equipment to which it is to be mounted so as to further ensure the operation of the overload relay.
  • a projection having a round tip end is provided on an inner surface of the terminal cover in a position corresponding to a center position of the overload relay, the retainer bushing is provided with a hole to be interlocked with the projection of the terminal cover, and the projection and the hole are interlocked with each other to fix and hold the retainer bushing on the terminal cover.
  • the retainer bushing mounting operation can be achieved with a one-touch motion.
  • the retainer bushing comprises: a base section having a circular peripheral surface configuration corresponding to an inner surface configuration of the terminal cover; a cylindrical pressure section which abuts on the overload relay; a hole which is provided at a tip end of the pressure section and houses therein a nut and a shaft section located in a center position of the overload relay; and a tapered connection section located between the pressure section and the base section.
  • the retainer bushing can be stably held.
  • the pressure section presses the center portion of the overload relay with the nut and shaft section housed in the hole provided at the tip end, and therefore, the overload relay can be stably held down. Since both the base section and the pressure section of the retainer bushing have circular configurations around the axial center, the retainer bushing has no directional property in being mounted to the terminal cover, meaning that it is excellent in workability.
  • a cylindrical hermetic casing 1 is to house therein an electrical compressor body (not shown), and its upper surface is provided with a protection device 2.
  • the protection device 2 is comprised of a terminal cover 3, a shaft section 4 and a nut 5 for fixing the terminal cover 3 on the upper surface of the hermetic casing 1.
  • the terminal cover 3 houses therein a sealed terminal 6 and an overload relay 7.
  • the terminal cover 3 has at its base portion a stepped section 3a corresponding in configuration to the overload relay 7, and a plurality of ribs 8 are integrally formed on an inner surface of the stepped section 3a in order to press the overload relay 7 against an upper surface of the hermetic casing 1 for the achievement of adhesion.
  • the overload relay 7 can be pressedly fixed on the upper surface of the hermetic casing 1 only by the terminal cover 3, so that the reduction in number of components can be achieved, thereby allowing a cast reduction to be achieved.
  • the terminal cover 3 has a housing section 9 for housing the overload relay 7, and the ribs 8 are located in positions symmetrical about the center line of the housing section. With this arrangement, the terminal cover 3 can uniformly press the overload relay 7 against the upper surface of the hermetic casing 1 for the achievement of adhesion.
  • the overload relay 7 can be pressed by providing the ribs 8, however, it is feared that an electrical component such as a lead wire will be possibly damaged by any rib 8 when the overload relay 7 is set on the upper surface of the hermetic casing 1 and then the terminal cover 3 is put on it.
  • each rib 8 is formed into an arc configuration to allow the terminal cover 3 to be set securely and surely in the present invention.
  • the periphery of the overload relay 7 can be made to closely adhere to the upper surface of the compressor body.
  • a retainer bushing 10 made of rubber or the like having an insulating property and an elasticity is interposed between a top panel of the terminal cover 3 and the overload relay 7 while serving as a means for pressing the overload relay 7 against the upper surface of the hermetic casing 1.
  • the retainer bushing 10 presses the overload relay 7 when the terminal cover 3 is set. Therefore, the overload relay 7 and the upper surface of the hermetic casing 1 are made to closely adhere to each other, thereby allowing the operation of the overload relay 7 to be further ensured. In this case, since the retainer bushing 10 has an elasticity, it does not hinder the pressing operation of the ribs 8 against the overload relay 7, and both the pressure force of the ribs 8 and the pressure force of the retainer bushing 10 exert effectively on the overload relay.
  • a projection 11 having a round tip end is provided on the top panel of the housing section 9 of the terminal cover 3, and a hole 12 to be interlocked with the projection 11 is provided in the retainer bushing 10.
  • its base section 10a has a circular peripheral surface configuration corresponding to the inner surface configuration of the terminal cover 3, and a pressure section 10b which is to abut on the overload relay 7 has a cylindrical configuration.
  • the pressure section 10b has at its tip end a hole 10c for housing therein a nut 12 and a shaft section 13 located in the center position of the overload relay 7, and a connection section located between the pressure section 10b and the base section 10a has a tapered configuration.
  • the peripheral surface of the base section 10a of the retainer bushing 10 has a circular configuration corresponding to the inner surface configuration of the terminal cover 3, and therefore, the retainer bushing can be stably held on the terminal cover 3.
  • the pressure section 10b presses the center portion of the overload relay 7 with the nut 12 and shaft section 13 housed in the hole 10c located at its tip end, and therefore, the overload relay 7 can be stably held down. Since both the base section 10a and the pressure section 10b of the retainer bushing 10 have circular configurations around the axial center, the retainer bushing has no directional property in being mounted to the terminal cover 3, meaning that it is excellent in workability.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Motor Or Generator Frames (AREA)
  • Casings For Electric Apparatus (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (5)

  1. Schutzvorrichtung (2) für ein elektrisches Bauteil mit einer Anschlußabdeckung (3) zum Aufnehmen eines elektrischen Bauteils (6) und eines Überlastrelais, wobei die Anschlußabdeckung (3) an einer Außenfläche (1) einer betreffenden Einrichtung angebracht ist, an der sie angebracht werden soll, dadurch gekennzeichnet, daß sie weiterhin enthält:
       mehrere Rippen (8), die als Einrichtung zum Drücken des Überlastrelais (7) gegen die Außenfläche der betreffenden Einrichtung dienen und integral mit der Anschlußabdeckung (3) auf einer Innenfläche eines Gehäuseabschnittes (9) der Anschlußabdeckung (3) ausgebildet sind, um darin das Überlastrelais (7) aufzunehmen, wobei sich die Rippen (8) in Positionen befinden, die symmetrisch um eine Mitte des Überlastrelais (7) angeordnet sind.
  2. Schutzvorrichtung für ein elektrisches Bauteil nach Anspruch 1, bei der ein führendes Ende jeder Rippe (8), die dem Überlastrelais (7) gegenüberliegt, bogenförmig ausgebildet ist.
  3. Schutzvorrichtung für ein elektrisches Bauteil nach Anspruch 1 oder 2, bei der eine Haltebuchse (10), die über eine Isoliereigenschaft verfügt und elastisch ist, zwischen einer oberen Wand der Anschlußabdeckung (3) und dem Überlastrelais (7) angeordnet ist und als Einrichtung zum Drücken des Überlastrelais (7) gegen die Außenfläche (1) der betreffenden Einrichtung dient.
  4. Schutzvorrichtung für ein elektrisches Bauteil nach Anspruch 3, bei der ein Vorsprung (11) mit einem runden Spitzenende auf einer Innenfläche der Anschlußabdeckung (3) in einer Position angebracht ist, die einer Mittenposition des Überlastrelais (7) entspricht, die Haltebuchse (10) mit einem Loch ausgestattet ist, um mit dem Vorsprung (11) der Anschlußabdeckung (3) verriegelt zu werden, und der Vorsprung (11) sowie das Loch miteinander verriegelt sind, um die Haltebuchse (10) auf der Anschlußabdeckung (3) zu halten und zu fixieren.
  5. Schutzvorrichtung für ein elektrisches Bauteil nach Anspruch 4, bei der die Haltebuchse (10) enthält: einen Basisabschnitt (10a) mit einer runden Umfangsfläche entsprechend der Beschaffenheit einer Innenfläche der Anschlußabdeckung (3); einen zylindrischen Druckabschnitt (10b), der gegen das Überlastrelais (7) stößt; ein Loch (10c), das an einem Spitzenende des Druckabschnittes (10b) ausgebildet ist und eine Mutter (12) sowie einen Schaftabschnitt (13) aufnimmt, der sich in einer Mittenposition des Überlastrelais (7) befindet; und einen konisch zulaufenden Verbindungsabschnitt, der sich zwischen dem Druckabschnitt (10b) und dem Basisabschnitt (10a) befindet.
EP19960116493 1995-10-17 1996-10-15 Schutzvorrichtung für elektrisches Bauteil Expired - Lifetime EP0769794B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP26820695 1995-10-17
JP26820695A JPH09112424A (ja) 1995-10-17 1995-10-17 電装部品の保護装置
JP268206/95 1995-10-17

Publications (2)

Publication Number Publication Date
EP0769794A1 EP0769794A1 (de) 1997-04-23
EP0769794B1 true EP0769794B1 (de) 2000-04-26

Family

ID=17455402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960116493 Expired - Lifetime EP0769794B1 (de) 1995-10-17 1996-10-15 Schutzvorrichtung für elektrisches Bauteil

Country Status (6)

Country Link
EP (1) EP0769794B1 (de)
JP (1) JPH09112424A (de)
CN (1) CN1078964C (de)
ES (1) ES2146345T3 (de)
GR (1) GR3033580T3 (de)
MY (1) MY116570A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100415817B1 (ko) * 2000-12-07 2004-01-31 삼성전자주식회사 전기제품용 단자장치 보호커버 및 이를 갖춘 압축기 조립체
CN2885311Y (zh) 2006-01-18 2007-04-04 郑成福 经尿道光动力疗法前列腺治疗仪
JP6021428B2 (ja) * 2012-05-17 2016-11-09 三菱重工業株式会社 密閉型電動圧縮機
CN105240245B (zh) * 2015-10-15 2017-08-08 珠海格力电器股份有限公司 一种压缩机端盖及其安装结构
JP6866941B2 (ja) * 2019-01-31 2021-04-28 ダイキン工業株式会社 圧縮機

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8153530V0 (it) * 1981-08-07 1981-08-07 Aspera Spa Gruppo di alimentazione e protezione di un compressore ermetico di una macchina frigorifera con regolazione termostatica
US4567390A (en) * 1984-08-02 1986-01-28 Carrier Corporation Internal line break assembly
US4620425A (en) * 1985-08-12 1986-11-04 General Electric Company Thermal protector housing

Also Published As

Publication number Publication date
CN1154444A (zh) 1997-07-16
CN1078964C (zh) 2002-02-06
JPH09112424A (ja) 1997-05-02
ES2146345T3 (es) 2000-08-01
MY116570A (en) 2004-02-28
EP0769794A1 (de) 1997-04-23
GR3033580T3 (en) 2000-09-29

Similar Documents

Publication Publication Date Title
US5645451A (en) Waterproof tap for a connector
WO2003038929A3 (en) Battery system
US6148143A (en) Electric device for evaporating active substances
KR950008981A (ko) 밀폐형 전동 압축기용 프로텍터(protector)
US6146198A (en) Waterproof connector
US5941372A (en) Push button switching system and method
EP0769794B1 (de) Schutzvorrichtung für elektrisches Bauteil
US20040027790A1 (en) Protective cover mounting apparatus for a hermetic compressor
US6031196A (en) Push button switching system and method
CA2021563C (en) Rotary compressor electrical ground device
US6102666A (en) Sealed electrical connector assembly
EP1486671B1 (de) Thermisch betätigter schalter
JP4049821B2 (ja) 電気器具
AU681945B2 (en) A hearing aid
US5605478A (en) Means for attaching a connector body to an electric device
EP0940822B1 (de) Veränderbarer Widerstand
US4414530A (en) Miniature motor protector apparatus and method for assembling thereof
CA2346221A1 (en) Protection device having a sleeve and method of assembling a battery with a protection device and an electrical component
EP0385202A1 (de) Gekapselter Bimetallschalter
US20100230262A1 (en) Panel mount sealed pushbutton switch
JP2501469B2 (ja) 電動機
US20030112113A1 (en) Coil apparatus
EP0052369B1 (de) Temperaturfühlvorrichtung
JPH07310661A (ja) 密閉型電動圧縮機
EP1333457A3 (de) In einen Steuerungsanzeigebildschirm einsteckbarer elektrischer Schalter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): ES FR GR IT

17P Request for examination filed

Effective date: 19970605

17Q First examination report despatched

Effective date: 19990114

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): ES FR GR IT

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2146345

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20071102

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20071027

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20071009

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20070919

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081015

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090505

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20081016

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081016