CN100356652C - Overload protector of single-phase AC motor - Google Patents
Overload protector of single-phase AC motor Download PDFInfo
- Publication number
- CN100356652C CN100356652C CNB2005100946160A CN200510094616A CN100356652C CN 100356652 C CN100356652 C CN 100356652C CN B2005100946160 A CNB2005100946160 A CN B2005100946160A CN 200510094616 A CN200510094616 A CN 200510094616A CN 100356652 C CN100356652 C CN 100356652C
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- pin
- fixed
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- protective device
- holder
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H61/00—Electrothermal relays
- H01H61/02—Electrothermal relays wherein the thermally-sensitive member is heated indirectly, e.g. resistively, inductively
Abstract
The present invention relates to an overload protector for single-phase alternating current motors, which belongs to motor protectors for refrigeration compressors. The present invention comprises a shell body, a cover, electric heating wires, a bimetal sheet, a first connecting foot, a second connecting foot, a moving contact, a stationary contact, a fixing seat and a touch mechanism, wherein the stationary contact is fixed on the first connecting foot, the electric heating wires are fixedly arranged in an electric heating wire cavity through a pair of a first connecting post and a second connecting post which is connected to thd second connecting foot, the disk-shaped bimetal sheet is arranged on a bimetal sheet seat correspondingly to a position above the electric heating wires, the touch mechanism comprises a top rod and a spring sheet, the top rod is actively arranged in a top rod hole of the fixing seat, the upper end and the lower end of the top rod are corresponding to the bimetal sheet and the spring sheet, the fixing end of the spring sheet is fixed on a fixing sheet of a spring sheet, which is fixed below the fixing seat, the free end of the spring sheet extends into a contact limiting cavity arranged below the fixing seat, and the moving contact is fixed on the free end correspondingly to the stationary contact. The present invention has the advantages that the structure has reasonable distribution, the bimetal sheet is changed from a dish shape into a disk shape so as to stop cracks, the bimetal sheet is not charged when circuits are switched on, and drawing arcs do not exist.
Description
Technical field
The invention belongs to the motor protecter of refrigerant compressor, more particularly is a kind of overload protective device that effective protection can be provided the temperature overtemperature overload of load motor.
Background technology
Overload protective device as load motor; structure comparatively commonly used at present as shown in Figure 4; comprise a housing 1; be used to cover the lid of putting on the housing 12; end is stretched in the shell chamber of housing 1 and the other end is positioned at first outside the shell chamber of housing 1 one to one; second pin 5; 6; heating wire 3; bimetal leaf 4 and moving; fixed contact a; b; fixed contact b has a pair of; one end electrical ties of one of them fixed contact b and heating wire 3; the other end of heating wire 3 is connected with second pin 6; another fixed contact b contacts with first pin 5; moving contact a has a pair of; be located at the two ends of bimetal leaf 4; and corresponding with a pair of fixed contact b respectively, the middle part of bimetal leaf 4 is fixed on and extends on the mesotropic fixed leg of the shell of housing 1.Whole overload protective device is serially connected with in the circuit by first, second pin 5,6; when the temperature overtemperature of load motor; bimetal leaf 4 is experienced the heat of heating wire 3 and deformation occurred; a pair of moving contact a on it is separated with a pair of fixed contact b; cut off the circuit of first, second pin 5,6; otherwise then reset and make a pair of moving contact a and a pair of fixed contact b closure of its two end, make the circuit turn-on of first, second pin 5,6 by bimetal leaf 4.Though said structure can embody overload protective function,, the structure of protector self takes place often because of existing defective to cause failure phenomenon.These defectives show as: the one, and because of being fixed on, the middle part of bimetal leaf 4 extends on the mesotropic fixed leg of the shell of housing 1, the prominent respectively moving contact a that establishes of two ends, the structure of whole bimetal leaf 4 shows as butterfly, owing to being butterfly or claiming 8 horizontally-arranged fonts, the intensity at obvious its middle part is very fragile, after the repeated deformation action, soon just can make the middle part of bimetal leaf 4 cracking occur, and, because the two ends riveting of bimetal leaf 4/to weld a pair of silver contact be moving contact a, make bimetal leaf 4 and the binding site of moving contact a cracking also very easily occur, the existence of cracking can make temperature drift, and even makes bimetal leaf 4 forfeiture deformabilities; The 2nd, be under conducting (closure) situation in the loop, bimetal leaf 4 is in electriferous state all the time, be that bimetal leaf 4 has the electric current process, that is to say, in the whole loop of conducting, bimetal leaf 4 itself is being played the part of a resistive element and is being participated in conduction, thereby the electric conductivity of entire circuit is had a negative impact; The 3rd, the contact has four, and promptly a pair of moving contact a and a pair of fixed contact b are because the material of contact is expensive silver, therefore totally unfavorable to the economical with materials cost.
The applicant also retrieves document, searches thermal compensation type refrigerator overcurrent that the disclosed butterfly double-metal sheet type of Chinese patent notification number CN2093438U temperature protection relay, notification number CN2152301Y provide and crosses the two protectors of temperature rise, self-insurance's refrigerant compressor thermal protector that notification number CN2218263Y discloses, refrigeration compressor motor protector that notification number CN2287339Y introduces, thermal protector that Granted publication CN1207743C recommends and the compound motor protecter of current temperature of notification number CN2341305Y instruction.
In superincumbent six patent documentations, CN2093438Y belongs to flush type, be placed in the motor coil, can't keep in repair, in case protection relay is impaired, often replace in the lump together with motor, although the contact only has two, the cracking defect of bimetal leaf and under the circuit turn-on state bimetal leaf all deposit as the defective that resistive element participates in conduction; CN2152301Y and CN2218263Y are because of belonging to the structure category that the applicant describes Fig. 4 in front, and three place's defectives are all deposited; CN2287339Y is the technical scheme that the applicant oneself proposed on October 23rd, 1996, at first, because spring leaf (patent claims spring arm) is contacted with bimetal leaf, in normal operation, although bimetal leaf does not participate in conduction as the form of resistive element, it is charged.Secondly; bimetal leaf temperature-sensitive or to accept thermal-radiating ability relatively poor; because the protector of this kind structure and the installation of motor relation make bimetal leaf can not be close to the electric machine casing surface, but perpendicular with electric machine casing,, extremely is short of bimetal leaf so accepting the motor heat radianting capacity.Also have spring leaf and heating wire (patent claims heater) easily to produce electric short circuit, because the space between heating wire and the bimetal leaf is very little vast, anti-mechanical shock ability is very fragile in producing links such as assembling, transportation, both are diminished by electric clearance, in use be that circuit is in conducting state and occurs arcing often, cause short circuit, these are short of by due to the electrical structure irrational distribution; CN1207743C does not belong to refrigeration compressor motor protector application category, and can only play overtemperature protection, has aforesaid two place's defectives especially equally, and bimetal leaf is easy to crack and participate in conduction as resistive element; The shortcoming of CN2341305Y is as the elaboration of applicant to CN2093438u.
Summary of the invention
Task of the present invention be to provide a kind of electrical structure distribute reasonable, easy for installation, can prevent effectively the bimetal leaf cracking, can not cause electric short circuit, be in the overload protective device of the load motor that bimetal leaf can be not charged under the conducting state at circuit.
Task of the present invention is finished like this, a kind of overload protective device of load motor, comprise housing 1, lid 2, heating wire 3, bimetal leaf 4, first, second pin 5,6, moving, fixed contact a, b, characteristics are: it also include one in the shell chamber that is contained in housing 1 holder 7 and one be used for described moving, fixed contact a, b realizes the actuating mechanism of cut-off/close each other, the tool pin chamber, bottom 75 of holder 7, tool heating wire chamber, top 72 and bimetallic bar 71, described first, second pin 5,6 first, second base portion 51,61 are separately fixed at the corresponding both sides in pin chamber 75, and first, second pin 5,6 first, the second end 52,62 passed through first on the housing 1, the second pin hole 11,12, described fixed contact b is fixed on first base portion 51, described heating wire 3 is by first in a pair of cavity that is fixed in heating wire chamber 72, second connects post 31,32 and be fixedly arranged in the heating wire chamber 72, and second connects post 32 is connected with described second base portion 61, described bimetal leaf 4 is a disc, be held on the bimetallic bar 71, and corresponding to the top of heating wire 3; Described actuating mechanism comprises push rod 8 and spring leaf 9, push rod 8 can upper and lowerly be located in the jogger hole 73 that is opened in holder 7 central authorities versatilely, its upper and lower end is corresponding with bimetal leaf 4 and spring leaf 9 respectively, the stiff end 92 of spring leaf 9 is fixed on the spring leaf holder 76 of described holder 7 bottoms, the free end 91 of spring leaf 9 is stretched in default contact, the holder 7 bottoms limit chamber 74, described moving contact a is fixed on the free end 91, and is corresponding with the fixed contact b on described first base portion 51 that is fixed in first pin 5.
Of the present invention first in welding or the riveted joint any one of being fixed as that connects between the stiff end 92 of post 31 and spring leaf 9 fixed.
Dynamic and static contact a of the present invention, b are individually fixed on first base portion 51 of the free end 91 of spring leaf 9 and first pin 5 in any one mode in welding or the riveted joint, and both are corresponding Face to face.
Dynamic and static contact a of the present invention, b are respectively silver contact.
The material of housing 1 of the present invention is plastics.
The material of holder 7 described in the utility model is any one in pottery or the plastics.
Actuating mechanism of the present invention also includes one and is used to take the connector 10 that described spring leaf 9 is set to described holder 7 bottoms.
One of advantage of institute of the present invention tool, it is reasonable, easy for installation that electrical structure distributes; Two, the design philosophy that fixes by a firmware because of the middle part of having abandoned in the prior art bimetal leaf 4, thereby making bimetal leaf 4 become disc by butterfly becomes a reality, can thoroughly stop the phenomenon that temperature drift appears in bimetal leaf 4 appearance crackings and bimetal leaf 4, use and guarantee the due overheated overload protective function of the long-term performance of overload protective device; Three, changed moving contact a is located on the bimetal leaf 4 in the prior art, avoided as long as be in the charged all the time situation of bimetal leaf 4 under the conducting state in the loop; Four, have the distance of push rod 8 degree between spring leaf 9 and the heating wire 3, can not occur causing electric short circuit because of arcing; Five, under the user mode after the installation, can ensure that bimetal leaf 9 pastes with the electric machine casing surface face-to-face across the lid 2 of aluminium matter to touch that bimetal leaf 4 is accepted the motor heat radianting capacity and improved.
Description of drawings
Fig. 1 is one embodiment of the present of invention assembling assumption diagram.
Fig. 2 is that of the present invention another implemented from assembling assumption diagram.
Fig. 3 is the substructure schematic diagram of holder 7.
Fig. 4 lift for the present invention and prior art in the structure chart of overload protective device of load motor.
Embodiment
In Fig. 1 and Fig. 3, the housing 1 that material is plastics, has a shell chamber, the bottom in shell chamber offers first, second pin hole 11,12 that a pair of first, second end 52,62 that is used for first, second pin 5,6 of confession was passed through, and the hole shape in first, second pin hole 11,12 and size should be guaranteed to adapt with first, second end 52,62.External wall of upper portion expansion at housing 1 is provided with step 13, and lid 2 is configured on this step 13, and lid 2 preferentially uses the material of aluminium matter, and the central authorities of lid 2 are formed with a slightly cavity of protuberance.Material both can be that pottery also can be that the holder 7 of plastics integrally is contained in the shell chamber of housing 1, and pin chamber 75 is formed on the lower end surface of holder 7.Specifically be attached to Fig. 3 as can be known, on first, second slot 751,752 that insert on the chamber wall that is embedded in pin chamber 75 first, second end 52,62 of first, second pin 5,6, and first, second base portion 51,61 of first, second pin 5,6 is located on the chamber diapire in pin chamber 75, and, the front end of first base portion 51 of first pin 5 is stretched in the contact limit chamber 74, material for the fixed contact b of silver with welding or riveted joint or be fixed on the front end of first base portion 51 in other similar mode.Heating wire chamber 72 and bimetallic bar 71 are formed on the upper end of holder 7, a pair of first, second that is used for fixing heating wire 3 two ends connects post 31,32 and is firmly fixed on the holder 7, promptly be firmly fixed at the terminal point position, chamber in heating wire chamber 72, second connects post 32 should realize being electrically connected reliably with first base portion 61 of second pin 6.The bimetal leaf 4 that custom also is referred to as bimetallic element is disc on the whole, be shelved on the bimetallic bar 71, its side and heating wire 3 subsides towards heating wire 3 are touched, after heating wire 3 is heated, just can make bimetal leaf 4 distortion, upwards upset around this distortion shows as, and mediad is sunken into.
Push rod 8 as actuating mechanism can upper and lowerly float, and (be placed in movingly in the jogger hole 73 that is preset in holder 7 central authorities, the upper surface of push rod 8 is just corresponding to the central authorities of bimetal leaf 4, and the lower surface is just corresponding to the free end 91 of spring leaf 9.Specifically be attached to Fig. 3 as can be known, material is in contact limit chamber 74 places for the position of moving contact a on free end 91 of silver, thereby guarantees that it can and interaction corresponding with fixed contact b.Then in conjunction with Fig. 3, the a pair of spring leaf holder 76 that the stiff end 92 of spring leaf 9 is established by dashing forward on the holder 7 bottom faces is fixed in the bottom of holder 7, preferred fixed form is a rivet clasp, be not screwed but do not get rid of, and the stiff end 92 of spring leaf 9 and described first connects post 31 and realizes being connected reliably, for example by rivet stiff end 92 and first connect post 31 rivet clasps together.
Finish on to holder 7 by above-mentioned mention being provided with of whole parts after, holder 7 is installed with in the shell chamber of housing 1, and by lid 2 cap seals, first, second end 52,62 of first, second pin 5,6 is stretched in first, second pin hole 11,12 respectively and is gone out, and is serially connected with in the circuit under user mode for the present invention.
In Fig. 2, the difference of this enforcement illustration and previously described Fig. 1, Fig. 3 only is the form in the pin chamber 75 of holder 7 bottoms is omited to have done variation, and this variation is to settle the connector 10 that actuating mechanism increased in order to adapt to.That is to say, as actuating mechanism provided by the present invention except by the form shown in Figure 1, also can adopt version shown in Figure 2, promptly increase the carrier that a connector 10 is used as spring leaf 9, take spring leaf 9 and be set in the pin chamber 75 by connector 10.Specifically be with the stiff end 92 and connector 10 rivet clasps of rivet, and the free end 91 of spring leaf 9 is shelved on the connector 10 with spring leaf 9.In addition, slightly having done change, but the annexation of whole assembling process and each parts and even action principle are not and produce the essence difference between the embodiment of front yet to the shape of first, second pin 5,6.Hence one can see that, though the concrete shape to the pin chamber 75 on the holder 7, spring leaf 9, first, second pin 5,6 can change, but can not think that this variation has and take off technical scheme category of the present invention, so long as become butterfly in the past bimetal leaf 4 be shaped as disc, and the moving contact a as conducting/cutoff circuit is free on bimetal leaf 4, promptly avoids bimetal leaf 4 long-term charged design concepts to will be understood that all belonging to the present invention conceives scope.
Qualification to first, second pin 5,6 also is comparatively speaking above, only be to define according to Fig. 1 and position shown in Figure 3, in view of this, if the position of first, second pin 5,6 is exchanged, certainly corresponding other parts are as the same, should think so the equivalence, situation for example shown in Figure 2 promptly belongs to this.
During use, as long as with of the present invention first, second pin 5,6 are serially connected with in the electric circuit, when bimetal leaf 4 is experienced the radiant heat of the lid 2 of heating wire 3 or aluminium matter or external environment, bimetal leaf 4 just produces deformation, this deformation shows as upwards upset of periphery, and the mediad lower recess, thereby promote push rod 8 to bottom offset, because the lower surface of push rod 8 is corresponding with the free end 91 of spring leaf 9, again because under normal circumstances, moving contact a on the free end 91 of spring leaf 9 is that the fixed contact b on first base portion 51 with first pin 5 is closed mutually, therefore, when push rod 8 during to bottom offset, just spread to free end 91 by the lower surface of push rod 8, the position that forces the moving contact a on the free end 91 is towards the direction displacement that deviates from the fixed contact b on first base portion 51, thereby make and before be in moving under the closure state, fixed contact a, b separates, so that first, second pin 5,6 loop disconnects, and plays the effect of protection compressor electric motor, promptly plays the effect of protection load motor; When the radiant heat of the lid 2 of heating wire 3 or aluminium matter or external environment is in when being lower than bimetal leaf 4 temperature sensors, bimetal leaf 4 resets, its active force to push rod 8 disappears, the free end 91 of spring leaf 9 resets, fixed contact b on moving contact a on the free end 91 and first base portion 51 is closed mutually, and motor circuit recloses.In said process, owing to bimetal leaf 4 is not fixed by means of any fixture, and only be to be held on the bimetallic bar 71, and be discoidal, therefore,, can not cause its cracking no matter its deformation action is inferior arbitrarily repeatedly; Under circuit was in closure state, bimetal leaf 4 was uncharged, and promptly no current is flowed through, and bimetal leaf 4 does not participate in conduction, so can not exert an influence to its performance.The advantage of the technical scheme that therefore, the present invention recommended is fairly obvious.
Claims (10)
1, a kind of overload protective device of load motor, comprise housing (1), lid (2), heating wire (3), bimetal leaf (4), first, second pin (5), (6), moving, fixed contact a, b, it is characterized in that it also include one in the shell chamber that is contained in housing (1) holder (7) and one be used for described moving, fixed contact a, b realizes the actuating mechanism of cut-off/close each other, the tool pin chamber, bottom (75) of holder (7), tool heating wire chamber, top (72) and bimetallic bar (71), described first, second pin (5), (6) first, second base portion (51), (61) be separately fixed at the corresponding both sides in pin chamber (75), and first, second pin (5), (6) first, the second end (52), (62) passed through first on the housing (1), the second pin hole (11), (12), described fixed contact b is fixed on first base portion (51), described heating wire (3) is by first in a pair of cavity that is fixed in heating wire chamber (72), second connects post (31), (32) be fixedly arranged in the heating wire chamber (72), and second connects post (32) is connected with described second base portion (61), described bimetal leaf (4) is a disc, be held on the bimetallic bar (71), and corresponding to the top of heating wire (3); Described actuating mechanism comprises push rod (8) and spring leaf (9), push rod (8) can be gone up, be located in the jogger hole (73) that is opened in holder (7) central authorities down versatilely, on it, the lower end is corresponding with bimetal leaf (4) and spring leaf (9) respectively, the stiff end (92) of spring leaf (9) is fixed on the spring leaf holder (76) of described holder (7) bottom, the free end (91) of spring leaf (9) is stretched in holder (7) the bottom default contact limit chamber (74), described moving contact a is fixed on the free end (91), and is corresponding with the fixed contact b on described first base portion (51) that is fixed in first pin (5).
2, the overload protective device of load motor according to claim 1 is characterized in that described first pin (5) is slotting solid on described pin chamber (75) to insert the embedding mode.
3, the overload protective device of load motor according to claim 1 is characterized in that described second pin (6) is slotting solid on described pin chamber (75) to insert the embedding mode.
4, according to the overload protective device of claim 1 or 3 described load motors, second base portion (61) and second that it is characterized in that described second pin (6) connects in solid welding or the rivet clasp any one of being fixed as of post (32) and fixes.
5, the overload protective device of load motor according to claim 1 is characterized in that described first in welding or the riveted joint any one of being fixed as that connects between the stiff end (92) of post (31) and spring leaf (9) fix.
6, the overload protective device of load motor according to claim 1; it is characterized in that described dynamic and static contact a, b are individually fixed on first base portion (51) of the free end (91) of spring leaf (9) and first pin (5) in any one mode in welding or the riveted joint, both are correspondence Face to face.
7,, it is characterized in that described dynamic and static contact a, b are respectively silver contact according to the overload protective device of claim 1 or 6 described load motors.
8, the overload protective device of load motor according to claim 1, the material that it is characterized in that described housing (1) is plastics.
9, the overload protective device of load motor according to claim 1, the material that it is characterized in that described holder (7) are any one in pottery or the plastics.
10, the overload protective device of load motor according to claim 1 is characterized in that described actuating mechanism also includes one and is used to take the connector (10) that described spring leaf (9) is set to described holder (7) bottom.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100946160A CN100356652C (en) | 2005-09-26 | 2005-09-26 | Overload protector of single-phase AC motor |
| PCT/CN2005/002314 WO2007033537A1 (en) | 2005-09-26 | 2005-12-26 | An overload protector for single ac motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100946160A CN100356652C (en) | 2005-09-26 | 2005-09-26 | Overload protector of single-phase AC motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1767297A CN1767297A (en) | 2006-05-03 |
| CN100356652C true CN100356652C (en) | 2007-12-19 |
Family
ID=36742970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100946160A Active CN100356652C (en) | 2005-09-26 | 2005-09-26 | Overload protector of single-phase AC motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100356652C (en) |
| WO (1) | WO2007033537A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498297B (en) * | 2009-02-19 | 2012-05-23 | 浙江工业大学 | Continuous over loading test system for cold compressor |
| CN103515147A (en) * | 2013-09-29 | 2014-01-15 | 扬州宝珠电器有限公司 | Current-limiting type temperature controller |
| CN104734570A (en) * | 2015-03-16 | 2015-06-24 | 常熟市天银机电股份有限公司 | Power-dissipation-free and energy-saving type start protector of single phase AC motor |
| CN108766834B (en) * | 2018-07-24 | 2023-06-13 | 杭州星帅尔电器股份有限公司 | Thermal protector and method of assembling the same |
| CN111130273B (en) * | 2018-10-31 | 2023-07-14 | 安徽美芝精密制造有限公司 | Distributed coil motor, compressor with distributed coil motor and air conditioning system with distributed coil motor |
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| CN86103184A (en) * | 1986-05-05 | 1987-11-11 | 中山大学 | Hand-reset one way quick-action temperature limiter |
| CN88203791U (en) * | 1988-02-25 | 1988-11-23 | 张鹤林 | Over-load protector |
| CN2051797U (en) * | 1989-07-29 | 1990-01-24 | 郝进兴 | Protector for motor |
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| CN2287339Y (en) * | 1996-10-23 | 1998-08-05 | 常熟市碧溪无线电厂 | Protector for motor of refrigerating compressor |
| US5854584A (en) * | 1994-04-05 | 1998-12-29 | Roegelein; Dieter | Protective device against thermal overload for a small high-heat-load electric motor |
| CN2606490Y (en) * | 2003-01-24 | 2004-03-10 | 常熟市天银机电有限公司 | Motor starting protector |
| CN2606491Y (en) * | 2003-01-24 | 2004-03-10 | 常熟市天银机电有限公司 | Integral motor starting protector |
| CN1604261A (en) * | 2003-10-03 | 2005-04-06 | 连文松 | Automatic change-over safety switch capable of preventing current overloading |
| CN2833867Y (en) * | 2005-09-26 | 2006-11-01 | 常熟市天银机电有限公司 | Overload protector for single-phase AC motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2152301Y (en) * | 1993-05-05 | 1994-01-05 | 田惠民 | Heat compensate refrigerator over-current over-temperature rise double protector |
| GB2338110B (en) * | 1998-04-14 | 2002-08-28 | Otter Controls Ltd | Improvements relating to thermal controls for electric heating elements |
| JPH11329187A (en) * | 1998-05-15 | 1999-11-30 | Akira Ueda | Thermostat |
| CN2401983Y (en) * | 1999-09-23 | 2000-10-18 | 上海合达电器实业有限公司 | Dipolar type temp. controller |
| CN2618284Y (en) * | 2003-04-11 | 2004-05-26 | 常熟市名佳电子器材有限公司 | Temperature controller |
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- 2005-09-26 CN CNB2005100946160A patent/CN100356652C/en active Active
- 2005-12-26 WO PCT/CN2005/002314 patent/WO2007033537A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103184A (en) * | 1986-05-05 | 1987-11-11 | 中山大学 | Hand-reset one way quick-action temperature limiter |
| CN88203791U (en) * | 1988-02-25 | 1988-11-23 | 张鹤林 | Over-load protector |
| CN2051797U (en) * | 1989-07-29 | 1990-01-24 | 郝进兴 | Protector for motor |
| US5854584A (en) * | 1994-04-05 | 1998-12-29 | Roegelein; Dieter | Protective device against thermal overload for a small high-heat-load electric motor |
| CN2263397Y (en) * | 1996-04-23 | 1997-09-24 | 宝应电器厂 | Bimetallic strip current temp. overheat protector |
| CN2287339Y (en) * | 1996-10-23 | 1998-08-05 | 常熟市碧溪无线电厂 | Protector for motor of refrigerating compressor |
| CN2606490Y (en) * | 2003-01-24 | 2004-03-10 | 常熟市天银机电有限公司 | Motor starting protector |
| CN2606491Y (en) * | 2003-01-24 | 2004-03-10 | 常熟市天银机电有限公司 | Integral motor starting protector |
| CN1604261A (en) * | 2003-10-03 | 2005-04-06 | 连文松 | Automatic change-over safety switch capable of preventing current overloading |
| CN2833867Y (en) * | 2005-09-26 | 2006-11-01 | 常熟市天银机电有限公司 | Overload protector for single-phase AC motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1767297A (en) | 2006-05-03 |
| WO2007033537A1 (en) | 2007-03-29 |
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