CN109038500B - Motor starting protector with double protection functions - Google Patents
Motor starting protector with double protection functions Download PDFInfo
- Publication number
- CN109038500B CN109038500B CN201811029847.7A CN201811029847A CN109038500B CN 109038500 B CN109038500 B CN 109038500B CN 201811029847 A CN201811029847 A CN 201811029847A CN 109038500 B CN109038500 B CN 109038500B
- Authority
- CN
- China
- Prior art keywords
- motor
- protector
- pin
- starter
- contact
- 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.)
- Active
Links
- 230000001012 protector Effects 0.000 title claims abstract description 244
- 239000007858 starting material Substances 0.000 claims abstract description 147
- 230000004308 accommodation Effects 0.000 claims abstract description 43
- 230000000153 supplemental effect Effects 0.000 claims abstract description 31
- 238000005485 electric heating Methods 0.000 claims description 37
- 238000003780 insertion Methods 0.000 claims description 26
- 230000037431 insertion Effects 0.000 claims description 26
- 235000014676 Phragmites communis Nutrition 0.000 claims description 19
- 230000007704 transition Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000003068 static effect Effects 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 description 6
- 230000013011 mating Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
- H02H5/048—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch additionally responsive to excess current due to heating of the switch
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Thermally Actuated Switches (AREA)
Abstract
A motor starting protector with double protection functions belongs to the technical field of motor starting protectors. The motor starter comprises a shell and a shell cover, wherein the shell is provided with a motor protector accommodating cavity and a motor starter accommodating cavity, and the shell cover is matched with the shell; a motor protector disposed in the motor protector receiving chamber; a motor starter, this motor starter sets up in the motor starter holds the intracavity, characteristics: a motor supplemental protector accommodation chamber is formed in the housing at a position corresponding to the motor protector accommodation chamber, and a motor supplemental protector is provided in the motor supplemental protector accommodation chamber, and is in electrical contact with the motor protector. The advantages are that: the motor is fully protected and the starting safety is improved.
Description
Technical Field
The invention belongs to the technical field of motor starting protectors, and particularly relates to a motor starting protector with double protection functions.
Background
The common refrigeration compressor motor is taken as an example, and is a low-power single-phase alternating current motor, so that the motor needs to be started by a starter in an auxiliary way when the motor starts, and needs to be protected by a protector after the compressor enters a normal running state, thereby ensuring that the power supply of the refrigeration compressor is disconnected when an overload condition occurs in the running process of the refrigeration compressor, and avoiding damage of the refrigeration compressor caused by overheat.
In the published chinese patent literature, technical contents related to a refrigeration compressor motor start protector are not known, such as CN2606490Y (motor start, protector), CN2606491Y (integrated motor start protector), CN102386815B (integrated motor start protector with improved structure), CN100581043C (integrated single-phase ac motor start protector with improved structure), CN104734428a (single-phase ac motor start protector with improved power consumption), CN104734429A (single-phase ac motor start protector with improved power consumption), CN104734569A (single-phase ac motor start protector with improved power consumption), CN104734570a (single-phase ac motor start protector with power consumption) CN104734571a (single-phase ac motor start protector with improved power consumption), and so on.
The above-mentioned patent is not limited to the above-mentioned one, but the above-mentioned auxiliary starting of the motor by the starter and the overheat protection of the motor by the disconnection of the power supply by the protector are satisfied, but in the actual use process after installation, there are cases where the protector fails due to abnormal heat generation of the motor starter, and the circuit cannot be protected. In particular, since the protector failure is difficult or even impossible to find by a user, such as a refrigerator user, it is only recognized, but too late, when the single-phase ac motor is not operating, i.e. the refrigeration compressor is not operating. Because, once this occurs, it is undoubtedly troublesome for the user, for example, replacing the motor and the associated accessories (such as the motor start-up protector) can put an economic burden on the user, as well as, for example, affecting the normal use of the refrigerating device (refrigerator) by the user before the replacement of the damaged motor. In view of this, it is necessary to avoid the occurrence of the aforementioned situations, and the technical solutions to be described below are created in this context.
Disclosure of Invention
The object of the present invention is to provide a motor starting protector with double protection functions, which helps to continue to effectively cut off a fault circuit caused by overload when the motor protector fails and to keep the circuit in an open state all the time after the fault circuit is cut off, thereby sufficiently protecting the motor and improving the safety of starting.
The invention is achieved by a motor starting protector with double protection functions, which comprises a shell and a shell cover, wherein the shell is provided with a motor protector accommodating cavity and a motor starter accommodating cavity, and the shell cover is matched with the shell; a motor protector disposed in the motor protector receiving chamber; a motor starter provided in said motor starter accommodation chamber, characterized in that a motor supplemental protector accommodation chamber is formed in said housing at a position accompanying said motor protector accommodation chamber, and a motor supplemental protector is provided in said motor supplemental protector accommodation chamber, said motor supplemental protector being in electrical contact with said motor protector.
In a specific embodiment of the present invention, the motor protector accommodation chamber is formed behind the left end of the housing, the starter accommodation chamber is formed in the right end of the housing, and the motor supplemental protector accommodation chamber is formed in front of the left end of the housing.
In another specific embodiment of the present invention, a fixing lever insert seat is formed in the motor additional protector accommodation chamber of the housing, a motor protector contact pin insertion hole and a motor additional protector pin fixing insert positioning hole are formed at positions corresponding to the rear side of the fixing lever insert seat, a fixing lever insert chamber is formed in the middle of the fixing lever insert seat and at positions corresponding to between the motor protector contact pin insertion hole and the motor additional protector pin fixing insert positioning hole, a motor additional protector pin hole penetrating from the upper surface to the lower surface of the housing cover and communicating with the motor additional protector accommodation chamber is formed in the housing cover and at positions corresponding to the motor additional protector accommodation chamber, and the motor additional protector is insert-fitted with the fixing lever insert chamber, the motor protector pin fixing insert positioning hole and the motor additional protector pin hole disposed in the motor protector accommodation chamber is inserted into the motor additional protector accommodation chamber and into the motor protector contact pin insertion hole housing cover.
In still another specific embodiment of the present invention, the motor supplemental protector includes a fixed rod, a bimetal of the motor supplemental protector, and a pin of the motor supplemental protector, the front end of the fixed rod is embedded in the fixed rod embedded cavity of the fixed rod embedded seat and is defined by a pressing block, the pressing block is formed on the cover, the bimetal of the motor supplemental protector and the pin of the motor supplemental protector are accommodated in the accommodating cavity of the motor supplemental protector, a fixed rod matching hole is formed at the center of the bimetal of the motor supplemental protector and at the position corresponding to the fixed rod, the rear end of the fixed rod is fixedly connected with the bimetal of the motor supplemental protector at the position corresponding to the fixed rod matching hole, a bimetal left contact fixed lug extends at the left side of the bimetal of the motor supplemental protector, a bimetal left contact fixed lug extends at the right side of the bimetal, a bimetal left contact fixed lug hole penetrating the thickness direction of the bimetal left contact lug is formed on the housing cover, a bimetal left contact hole penetrating the thickness direction of the bimetal is formed at the contact hole corresponding to the right contact pin of the motor supplemental protector, a contact hole is formed at the right side of the bimetal, the bimetal is formed at the contact hole corresponding to the end face of the bimetal of the motor supplemental protector, the bimetal is formed at the contact hole corresponding to the right contact hole, the upper part of the motor additional protector pin is in inserted fit with the motor additional protector pin hole, the motor additional protector pin hole extends to the upper part of the shell cover, a motor additional protector pin fixing inserting sheet downwards extends on the right side of the lower part of the motor additional protector pin, the motor additional protector pin fixing inserting sheet is inserted into the motor additional protector pin fixing inserting sheet positioning hole, the bimetallic strip left contact is in electrical contact with the motor protector, and the bimetallic strip right contact is in electrical contact with the motor additional protector pin fixing inserting sheet; the motor protector accommodating cavity and the motor additional protector empty accommodating cavity are separated by an accommodating cavity public wall, a contact pin caulking groove is formed in the upper left edge of the accommodating cavity public wall, and the motor protector extends into the motor additional protector accommodating cavity through the contact pin caulking groove.
In still another specific embodiment of the present invention, a stationary contact pin cavity is separately provided on the right side of the housing cavity of the motor protector, the motor protector includes a base, a fixed seat, a bimetal, an electric heating wire, a push rod, a bimetal support ring, a stationary contact, a movable contact and an insert, the base is a ceramic base, the base forms a base cavity, a bimetal step seat is formed around the circumferential direction of the base cavity at the cavity opening of the base cavity, the base is accommodated in the housing cavity of the motor protector in a state that the cavity opening of the base cavity faces downwards, a push rod hole is provided at the central position of the top wall of the base, a first lead-out pin transition hole, a second lead-out pin transition hole and a pair of fixing seat positioning flange matching cavities are further provided on the top wall of the base, the first lead-out pin transition hole and the second lead-out pin transition hole are positioned on the left side of the push rod hole, the pair of fixing seat positioning flange matching cavities respectively correspond to the front and rear sides of the holes, a cavity is formed on the side of the base facing downwards, a guide hole is provided at the top wall of the base cavity, a guide hole is provided at the center position of the top wall of the base, a guide hole is further provided on the top wall of the base, a pair of the electric heating wire positioning flange is positioned on the top wall of the fixing seat positioning flange matching cavity is positioned at the left side of the top wall corresponding to the first lead-out pin transition hole, and a pair of the electric heating wire positioning flange matching hole is positioned at the left side of the top hole, the base is inserted in the fixing seat cavity, the pair of fixing seat positioning flanges are matched with the pair of fixing seat positioning flange matching cavities, the bimetallic strip is placed on the bimetallic strip step seat, the bimetallic strip supporting ring is also arranged on the bimetallic strip step seat at a position corresponding to one side of the bimetallic strip opposite to the base cavity, the periphery edge of the bimetallic strip is limited by the bimetallic strip supporting ring, the electric heating wire is arranged at one side of the bimetallic strip facing the base cavity, one end of the electric heating wire is provided with a first electric heating wire leading-out pin, the other end is provided with a second electric heating wire leading-out pin, the first electric heating wire leading-out pin is electrically connected with the inserting sheet after sequentially passing through the first electric heating wire leading-out pin transition hole and the first electric heating wire leading-out pin guide hole, the second lead-out pin of the electric heating wire is electrically connected with the movable contact after sequentially passing through the transition hole of the second lead-out pin of the electric heating wire and the guide hole of the second lead-out pin of the electric heating wire, the ejector rod is a ceramic ejector rod, the lower end of the ejector rod is supported at one side of the bimetallic strip facing the base cavity, the upper end of the ejector rod is contacted with the movable contact after sequentially passing through the ejector rod hole and the ejector rod abdicating hole, the middle part of the movable contact is fixed on the fixed seat during injection molding of the fixed seat, a fixed contact pin of the movable contact is formed at one upward side of one end of the fixed contact, a fixed contact pin of the movable contact is formed at the other end of the fixed contact, the fixed contact pin of the movable contact pin is in front of the movable contact pin cavity, the movable contact pin is in plug-in fit with the fixed contact pin cavity, the movable contact is fixed at one downward side of the front end of the movable contact pin, a push flange of the ejector rod is formed at one downward side of the middle part, the electric heating wire is characterized in that a movable contact piece expansion piece is formed at the rear end of the movable contact piece and perpendicular to the movable contact piece, an electric heating wire leading-out pin fixed connection lug is formed at the left end of the movable contact piece expansion piece, a movable contact piece expansion piece fixed hole is formed at the right end of the movable contact piece expansion piece, the movable contact piece movable contact corresponds to the upper part of the fixed contact piece, the push-push flange of the push rod corresponds to the upper end face of the push rod, the electric heating wire second leading-out pin is fixedly connected with the electric heating wire leading-out pin fixed connection lug after leading out a guide hole of the electric heating wire second leading-out pin, an expansion piece fixed boss is formed on the fixed seat and at the position corresponding to the movable contact piece expansion piece fixed hole, the movable contact piece expansion piece and the movable contact piece are arranged on the fixed seat through the embedding of the movable contact piece expansion piece, the inserting piece is embedded in the inserting groove, the front end of the push rod corresponds to the upper end face of the fixed contact piece, the electric heating wire second leading-out pin is fixedly connected with the electric heating wire leading-out pin of the left contact piece, and the electric heating wire leading-out pin is connected with the electric heating wire leading-out pin of the guide hole.
In still another specific embodiment of the present invention, the moving contact and the static contact of the moving contact are silver contacts.
In a further specific embodiment of the present invention, a starter front pin socket cavity and a starter rear pin socket cavity are provided in the motor starter accommodation cavity and at the left end of the motor starter accommodation cavity, the starter front pin socket cavity and the starter rear pin socket cavity corresponding to each other, a starter front pin socket hole penetrating the thickness direction of the case cover is provided at the right end of the case cover and at a position corresponding to the starter front pin socket cavity, and a pair of starter rear pin sockets penetrating the thickness direction of the case cover as well are provided at a position corresponding to the starter rear pin socket cavity, and the motor starter provided in the motor starter accommodation cavity is plugged with the starter front pin socket cavity, the starter rear pin socket cavity, the starter front pin socket hole and the pair of starter rear pin sockets.
In still another specific embodiment of the present invention, a pair of ptc thermistor supporting bosses protruding from a bottom surface of the motor starter accommodating chamber are formed at a bottom of the motor starter accommodating chamber, the pair of ptc thermistor supporting bosses corresponding to each other right and left, the motor starter includes a starter front insert sheet, a starter rear insert sheet, a single reed, and a ptc thermistor disposed in the motor starter accommodating chamber in a longitudinal state and supported on the pair of ptc thermistor supporting bosses, the starter front insert sheet and the starter rear insert sheet correspond to front and rear sides of the ptc thermistor, respectively, wherein a front contact sheet is fixed to a side of the starter front insert sheet toward the ptc thermistor at a right end of the starter front insert sheet, the front contact piece is electrically contacted with the front side surface of the positive temperature coefficient thermistor, a front starter pin extends upwards from the upper part of the left end of the front starter insert piece, a front starter pin socket extends downwards from the lower part of the left end of the front starter insert piece at a position corresponding to the front starter pin, the front starter pin is inserted into the front starter pin socket and extends to the upper part of the shell cover, the front starter pin socket is inserted into the front starter pin socket cavity, a rear contact piece is fixed on one side of the rear starter insert piece facing the positive temperature coefficient thermistor and electrically contacted with the rear side surface of the positive temperature coefficient thermistor, a pair of rear starter pins extends from the upper edge of the rear starter insert piece, the rear starter pins are inserted into the rear starter pin socket and extend to the upper part of the shell cover, the single reed is arranged between the rear inserting sheet of the starter and the positive temperature coefficient thermistor at the right side corresponding to the rear contact sheet, a single reed inserting foot extends above the single reed, a single reed inserting foot positioning groove is formed on the shell cover and at the position corresponding to the single reed inserting foot, and the single reed inserting foot is inserted with the single reed inserting foot positioning groove.
In a still further embodiment of the invention, a housing left-hand clamping foot seat is formed on the left-hand outer wall of the housing, a housing front clamping foot seat is formed on the front-hand outer wall of the housing, a housing rear clamping foot seat is formed on the rear-hand outer wall of the housing, a housing left clamping foot extends downwards on the left side of the housing, the position of the housing left clamping foot corresponds to the housing left clamping foot seat and is matched with the housing left clamping foot seat, a housing front clamping foot extends downwards on the front side of the housing and is matched with the housing front clamping foot seat, a housing rear clamping foot extends downwards on the rear side of the housing and is matched with the housing rear clamping foot seat; and shell positioning columns are formed on the shell at intervals around the upper edge corresponding to the accommodating cavity of the motor protector, shell positioning column holes which are equal to the shell positioning columns in number are formed behind the left end of the shell cover and at positions corresponding to the shell positioning columns, and the shell positioning column holes are matched with the shell positioning columns.
The technical scheme provided by the invention is that the motor additional protector is additionally arranged, so that the motor additional protector can continuously and effectively cut off a fault circuit caused by overload after the motor protector fails, thereby playing a role in protecting the motor, and the circuit is always in an open circuit state after the motor additional protector cuts off the fault circuit, thereby fully protecting the motor and improving the starting safety.
Drawings
Fig. 1 is a structural diagram of an embodiment of the present invention.
Fig. 2 is a perspective assembly structure view of the motor protector shown in fig. 1.
Fig. 3 is a bottom view of the cover shown in fig. 1.
Detailed Description
In order to make the technical spirit and advantages of the present invention more clearly understood, the applicant will now make a detailed description by way of example, but the description of the examples is not intended to limit the scope of the invention, and any equivalent transformation made merely in form, not essentially, according to the inventive concept should be regarded as the scope of the technical solution of the present invention.
In the following description, all concepts related to the directions or azimuths of up, down, left, right, front and rear are exemplified by the position state of fig. 1, and thus, the present invention is not to be construed as being particularly limited to the technical solutions provided by the present invention.
Referring to fig. 1, there are shown a housing 1 and a housing cover 2 molded from plastic, the housing 1 is formed with a motor protector accommodating chamber 11 and a motor starter accommodating chamber 12, and the housing cover 2 is fitted with the housing 1, i.e., fixed with the housing 1; a motor protector 3 is shown, which motor protector 3 is arranged in the aforementioned motor protector accommodation chamber 11, and which motor protector 3 may be referred to as a conventional motor protector; a motor starter 4 is shown, which motor starter 4 is arranged in the aforesaid motor starter accommodation chamber 12.
The technical key points of the technical scheme provided by the invention are as follows: a motor additional protector accommodating chamber 13 is formed in the housing 1 at a position corresponding to the motor protector accommodating chamber 11, that is, a position in front of the front chamber wall of the motor protector accommodating chamber 11, and a motor additional protector 5 is provided in the motor additional protector accommodating chamber 13, and the motor additional protector 5 is in electrical contact with the motor protector 3.
In the present invention, the aforementioned additional motor protector 5 is an unconventional motor protector with respect to the motor protector 3, because the motor protector 3 can be reversed as long as it is not disabled, and the circuit is always in an open (disconnected) state upon disconnection of the motor additional protector 5, and thus is irreversible.
As shown in fig. 1, the motor protector accommodation chamber 11 is formed in the rear left end (i.e., the rear left end) of the housing 1, the starter accommodation chamber 12 is formed in the right end of the housing 1, and the motor additional protector accommodation chamber 13 is formed in the front left end (i.e., the front left end) of the housing 1. Since the motor protector accommodation chamber 11 and the motor extra protector accommodation chamber 13 are located behind and in front of the left end of the housing 1, respectively, the applicant has verified that the motor extra protector accommodation chamber 13 described above accompanies the motor protector accommodation chamber 11.
With continued reference to fig. 1, a fixing lever insert seat 131 is formed in the motor additional protector accommodation chamber 13 of the housing 1, a motor protector contact pin insertion hole 132 and a motor additional protector pin fixing insert positioning hole 133 are formed at positions corresponding to the rear side of the fixing lever insert seat 131, a fixing lever insert chamber 1311 is formed at a position corresponding to the middle part of the fixing lever insert seat 131 and between the motor protector contact pin insertion hole 132 and the motor additional protector pin fixing insert positioning hole 133, a motor additional protector pin hole 21 is formed in the housing cover 2 and at a position corresponding to the motor additional protector accommodation chamber 13, the motor additional protector pin hole 21 penetrates from the upper surface to the lower surface of the housing cover 2 and communicates with the motor additional protector accommodation chamber 13, the motor additional protector 5 is in insert fit with the fixing lever insert chamber 1311, the motor additional protector pin fixing insert positioning hole 133 and the motor additional protector pin hole 21, and the motor protector pin 3 provided in the motor protector accommodation chamber 11 is inserted into the motor protector insertion hole 13.
Continuing to refer to fig. 1, the aforementioned motor supplemental protector 5 includes a fixing lever 51, a motor supplemental protector bimetal 52 and a motor supplemental protector pin 53, the front end of the fixing lever 51 is embedded in a fixing lever embedding cavity 1311 of the aforementioned fixing lever embedding seat 131 and is defined by a pressing block 26 formed on the cover 2 at a position corresponding to the fixing lever embedding cavity 1311, the pressing block 26 is formed on the aforementioned cover 2, the motor supplemental protector bimetal 52 and the motor supplemental protector pin 53 are accommodated in the aforementioned motor supplemental protector accommodation cavity 13, a fixing lever mating hole 521 is provided at the center of the motor supplemental protector bimetal 52 and at a position corresponding to the fixing lever 51, the rear end of the aforementioned fixing lever 51 is fixedly connected with the motor supplemental protector bimetal 52 at a position corresponding to the fixing lever mating hole 521 preferably by welding or riveting, a bimetal left contact fixing lug 522 is extended on the left side of the motor additional protector bimetal 52, a bimetal right contact fixing lug 523 is extended on the right side of the motor additional protector bimetal 52, a bimetal left contact fixing lug hole 5221 penetrating through the thickness direction of the bimetal left contact fixing lug 522 is formed on the bimetal left contact fixing lug 522, a bimetal left contact 5222 is preferably fixed at a position corresponding to the bimetal left contact fixing lug hole 5221 in a welding or riveting mode, a bimetal left contact 52221 is formed on the end face of the bimetal left contact 5222 facing one end of the motor protector 3, a bimetal right contact fixing lug hole 5231 penetrating through the thickness direction of the bimetal right contact fixing lug 523 is formed on the bimetal right contact fixing lug 523, a bimetal right contact 5232 is preferably fixed at a position corresponding to the bimetal right contact fixing lug hole 5231 by welding, a bimetal right contact 52321 is formed on an end surface of the bimetal right contact 5232 facing one end of the motor additional protector pin 53, the upper part of the motor additional protector pin 53 is inserted and engaged with the motor additional protector pin hole 21, the motor additional protector pin hole 21 is extended to the upper part of the case cover 2, a motor additional protector pin fixing insert 531 is extended downward at the right side of the lower part of the motor additional protector pin 53, the motor additional protector pin fixing insert 531 is inserted into the motor additional protector pin fixing insert positioning hole 133, the bimetal left contact 52221 is electrically contacted with the motor protector 3, and the bimetal right contact 52321 is electrically contacted with the motor additional protector pin fixing insert 531.
As shown in fig. 1, the motor protector accommodating chamber 11 and the motor additional protector accommodating chamber 13 are partitioned by an accommodating chamber common wall 14, a contact pin caulking groove 141 is formed at the upper left edge of the accommodating chamber common wall 14, and the motor protector 3 is inserted into the motor additional protector accommodating chamber 13 through the contact pin caulking groove 141.
Referring to fig. 2 and referring to fig. 1, a stationary contact pin chamber 111 is provided at the right side of the motor protector housing chamber 11, the motor protector 3 includes a base 31, a fixed seat 32, a bimetal 33, a heating wire 34, a push rod 35, a bimetal support ring 36, a stationary contact 37, a movable contact 38 and a plug 39, the base 31 is a ceramic base, the base 31 is formed with a base chamber 311, a bimetal step seat 3111 is formed around the circumferential direction of the base chamber 311 at the mouth of the base chamber 311, the base 31 is housed in the motor protector housing chamber 11 with the mouth of the base chamber 311 facing downward, a push rod hole 3121 is provided at the center of the base top wall 312 of the base 31, a heating wire first pin transition hole 3122, a heating wire second pin transition hole 3123 and a pair of fixed seat positioning flange mating chamber 3124 are also provided on the base top wall 312, the first pin transition hole 3122 and the second pin transition hole 3123 are located at the left side of the pin hole 3121, the pair of fixing base positioning flange matching cavities 3124 correspond to the front and rear sides of the pin hole 3121, respectively, the fixing base 32 is formed with a fixing base cavity 321 at a downward side, the fixing base 32 top wall is formed with a pair of fixing base positioning flanges 3211 at a side facing the fixing base cavity 321 and corresponding to the pair of fixing base positioning flange matching cavities 3124, the central position of the fixing base 32 top wall is provided with a pin yielding hole 322, the pin yielding hole 322 corresponds to the pin hole 3121, the fixing base 32 top wall is provided with a movable contact cavity 323, an inserting piece inserting groove 324, a first pin guiding hole 325 and a second pin guiding hole 326, the movable contact cavity 323 is located at the central position of the fixing base 32 top wall, the insert insertion groove 324, the first lead pin guide hole 325 and the second lead pin guide hole 326 are disposed at the left side of the top wall of the fixed base 32, the base 31 is inserted into the fixed base cavity 321, the pair of fixed base positioning flanges 3211 are engaged with the pair of fixed base positioning flange engaging cavities 3124, the bimetal 33 is seated on the bimetal step seat 3111, the bimetal support ring 36 is disposed on the bimetal step seat 3111 at a position corresponding to the side of the bimetal 33 opposite to the base cavity 311, the periphery edge of the bimetal 33 is defined by the bimetal support ring 36, the heating wire 34 is disposed at the side of the bimetal 33 facing the base cavity 311, a first lead pin 341 is formed at one end of the heating wire 34, a second lead pin 342 is formed at the other end, the first pin 341 of the heating wire is electrically connected to the insert 39 after passing through the first pin transition hole 3122 of the heating wire and the first pin guide hole 325 of the heating wire in sequence, the second pin 342 of the heating wire is electrically connected to the movable contact 38 after passing through the second pin transition hole 3123 of the heating wire and the second pin guide hole 326 of the heating wire in sequence, the rod 35 is a ceramic rod 35, the lower end of the rod 35 is supported at the side of the bimetal 33 facing the base cavity 311 at the center position corresponding to the heating wire 34, the upper end of the rod 35 is contacted with the movable contact 38 after passing through the rod hole 3121 and the rod relief hole 322 in sequence, the middle part of the fixed contact 37 is fixed on the fixed seat 32 as the fixed seat 32 is injection molded, a fixed contact pin 371 is formed at one side of the fixed contact 37 facing upward, a fixed contact pin 372 is formed at the other end, the static contact 371 corresponds to the front of the movable contact cavity 323, the static contact pin 372 is inserted with the static contact pin cavity 111, the movable contact 38 is arranged in the movable contact cavity 323, a movable contact 381 is fixed on one side of the front end of the movable contact 38 facing downwards, a push rod pushing flange 382 is formed on one side of the middle part facing downwards, a movable contact expansion sheet 383 is formed on the rear end of the movable contact 38 and perpendicular to the movable contact 38, a heating wire leading-out pin fixing connection lug 3831 is formed on the left end of the movable contact expansion sheet 383, a movable contact expansion sheet fixing hole 3832 is formed on the right end of the movable contact expansion sheet 383, the movable contact 381 corresponds to the upper part of the static contact 371, the push rod pushing flange 382 corresponds to the upper end face of the push rod 35, the second lead pin 342 is fixedly connected to the lead pin fixing tab 3831 after the second lead pin guide hole 326 is led out, an extension piece fixing boss 327 is formed on the fixing base 32 at a position corresponding to the extension piece fixing hole 3832, the extension piece 383 is mounted on the fixing base 32 together with the movable contact piece 38 by fitting the extension piece fixing hole 3832 and the extension piece fixing boss 327, the insert 39 is inserted into the insert insertion groove 324, the front end of the insert 39 is inserted into the motor additional protector accommodating cavity 13 at a position corresponding to the contact piece pin insertion groove 141 and folded down to form a contact piece pin 391, the contact piece pin 391 is inserted into the motor protector contact piece insertion hole 132, the first lead pin 341 is fixedly connected to the insert 39 after the first lead pin 325 is led out, the bimetal left contact 52221 is electrically connected to the front side of the contact pin 391, and the bimetal left contact 52221 is a silver contact, and the bimetal right contact 52321 is a silver contact.
Since the structure and the working principle and the action mechanism of the motor protector 3 described above belong to known technologies and are described in detail by the patent literature mentioned in the background section above by the applicant, the applicant will not be reiterated.
When the motor protector 3 fails, the motor additional protector 5 of the present invention serves to protect the motor. Since the motor protector 3 is a conventional protector, and automatically jumps when the single-phase alternating current motor is overloaded, the motor protector plays a role of protecting a circuit, and automatically returns to normal when the temperature returns to normal temperature, and the circuit returns to normal based on the fact, the motor protector is called as a reversible motor protector 3. As described above, in the motor additional protector 5, since it is an irregular motor protector (i.e., an "irregular protector"), when the motor protector 3 fails due to abnormal factors such as contact oxidation, loss of elasticity of the elastic member, and deformation of the elastic member, and the like, and cannot perform the role of protecting the circuit any more, the motor additional protector 5 of the present invention functions as a protection circuit, and once the motor additional protector 5 is opened, the circuit is always in an open state and never returns to the open state, so that the motor can be thoroughly protected, and the safety of starting is improved, specifically, once the motor is overloaded, the circuit heats up, and after the motor protector 3 fails due to contact oxidation or the like, the motor additional protector bimetallic strip 52 of the motor additional protector 5 is deformed due to heat generation of the bimetallic strip left contact 52221 and/or bimetallic right contact 52321 are separated from the contact strip 391 and/or the motor additional protector pin fixing tab 531, and thus the circuit is disconnected, and since the motor additional protector bimetallic strip 52 of the motor additional protector does not have a reset function, and the circuit is removed from the fault detector is restored to the man-made.
In this embodiment, the moving contact 381 and the stationary contact 371 are both silver contacts.
As shown in fig. 1, a starter front pin socket cavity 121 and a starter rear pin socket cavity 122 are provided in the motor starter accommodation cavity 12 at a left end of the motor starter accommodation cavity 12, the starter front pin socket cavity 121 and the starter rear pin socket cavity 122 are provided in correspondence to each other in front and rear, a starter front pin insertion hole 22 penetrating through a thickness direction of the housing cover 2 is provided at a right end of the housing cover 2 and at a position corresponding to the starter front pin socket cavity 121, and a pair of starter rear pin insertion holes 23 penetrating also through the thickness direction of the housing cover 2 are provided at a position corresponding to the starter rear pin socket cavity 122, and the motor starter 4 provided in the motor starter accommodation cavity 12 is inserted into the starter front pin socket cavity 121, the starter rear pin socket cavity 122, the starter front pin insertion hole 22, and the pair of starter rear pin insertion holes 23.
With continued reference to fig. 1, the aforementioned motor starter accommodating chamber 12 is formed at the bottom thereof with a pair of ptc thermistor supporting bosses 123 protruding from the bottom surface of the motor starter accommodating chamber 12, the pair of ptc thermistor supporting bosses 123 corresponding to each other right and left, the aforementioned motor starter 4 includes a starter front insert piece 41, a starter rear insert piece 42, a single reed 43 and a ptc thermistor 44, the ptc thermistor 44 is disposed in the motor starter accommodating chamber 12 in a longitudinal state and supported on the aforementioned pair of ptc thermistor supporting bosses 123, the starter front insert piece 41 and the starter rear insert piece 42 correspond to the front and rear sides of the ptc thermistor 44, respectively, wherein a front contact piece 411 is fixed to the right end of the starter front insert piece 41 toward the side of the ptc thermistor 44, the front contact piece 411 is electrically contacted with the front side of the ptc thermistor 44, a front starter pin 412 is extended upward at the upper left end of the front starter insert 41, a front starter pin socket 413 is extended downward at the lower left end of the front starter insert 41 and at a position corresponding to the front starter pin 412, the front starter pin 412 is inserted into the front starter pin socket 22 and extended above the case cover 2, the front starter pin socket 413 is inserted into the front starter pin socket cavity 121, a rear contact piece 421 is fixed at the side of the rear starter insert 42 facing the ptc thermistor 44, the rear contact piece 421 is electrically contacted with the rear side of the ptc thermistor 44, a pair of rear starter pins 422 are extended at the upper edge of the rear starter insert 42, the pair of starter rear pins 422 are inserted into the aforementioned pair of starter rear pin insertion holes 23 and extend above the case cover 2, the single reed 43 is provided between the starter rear insert piece 42 and the ptc thermistor 44 at a position corresponding to the right side of the aforementioned rear contact piece 421, a single reed insertion pin 431 extends above the single reed 43, a single reed insertion pin positioning groove 27c is formed on the aforementioned case cover 2 at a position corresponding to the single reed insertion pin 431, and the single reed insertion pin 431 is inserted with the single reed insertion pin positioning groove 27 c.
Since the motor starter 4 belongs to the known art, for example, see the patent literature mentioned in the background section above by the applicant, the applicant does not give any further details on the working principle thereof.
Referring to fig. 3 in combination with fig. 1, the cover 2 is used to be fixed to the housing 1: a left housing-locking base 15a is formed on the left outer wall of the housing 1, a front housing-locking base 15b is formed on the front outer wall of the housing 1, a rear housing-locking base 15c is formed on the rear outer wall of the housing 1, a left housing-locking base 24a extends downward on the left side of the housing cover 2, the left housing-locking base 24a is located corresponding to the left housing-locking base 15a and is engaged with the left housing-locking base 15a, a front housing-locking base 24b extends downward on the front side of the housing cover 2 and is engaged with the front housing-locking base 15b at a location corresponding to the front housing-locking base 15b, a rear housing-locking base 24c extends downward on the rear side of the housing cover 2 and is engaged with the rear housing-locking base 15c at a location corresponding to the rear housing-locking base 15 c. Furthermore, housing positioning posts 16 are formed on the housing 1 at intervals around the upper edge corresponding to the motor protector accommodation chamber 11, and housing positioning post holes 25 are formed behind the left end of the housing cover 2 at positions corresponding to the housing positioning posts 16 in an equal number to the housing positioning posts 16, and the housing positioning post holes 25 are matched with the housing positioning posts 16.
As shown in fig. 3, a starter front tab contact stopper 27a is further formed on the cover 2 at a position corresponding to the starter front tab 41, and the starter front tab contact stopper 27a contacts the starter front tab 41; a starter rear insert stopper 27b is formed on the cover 2 at a position corresponding to the starter rear insert 42, and the starter rear insert stopper 27b is in contact with the starter rear insert; a cover insert slot 27d is formed in the cover 2 at a position corresponding to the insert 39, and the upper portion of the insert 39 is inserted into the insert slot 27 d; a movable contact stopper 27e is also formed on the cover 2 at a position corresponding to the movable contact piece 38, and the movable contact stopper 27e is in contact with the movable contact piece 38.
In summary, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the task of the invention, and faithfully honors the technical effects carried by the applicant in the technical effect column above.
Claims (8)
1. A motor starting protector with double protection functions comprises a shell (1) and a shell cover (2), wherein the shell (1) is provided with a motor protector accommodating cavity (11) and a motor starter accommodating cavity (12), and the shell cover (2) is matched with the shell (1); a motor protector (3), the motor protector (3) is arranged in the motor protector accommodating cavity (11); a motor starter (4), the motor starter (4) being arranged in the motor starter accommodation chamber (12), characterized in that a motor supplemental protector accommodation chamber (13) is formed on the housing (1) at a position accompanied by the motor protector accommodation chamber (11), a motor supplemental protector (5) is arranged in the motor supplemental protector accommodation chamber (13), and the motor supplemental protector (5) is in electrical contact with the motor protector (3); a fixing rod embedding seat (131) is formed in the motor additional protector accommodating cavity (13) of the shell (1), a motor protector contact pin inserting hole (132) and a motor additional protector pin fixing inserting piece positioning hole (133) are formed at positions corresponding to the rear side of the fixing rod embedding seat (131), a fixing rod embedding cavity (1311) is formed at the middle part of the fixing rod embedding seat (131) and at positions corresponding to the middle part of the fixing rod embedding seat (132) and the motor additional protector pin fixing inserting piece positioning hole (133), a motor additional protector pin inserting hole (21) is formed on the shell cover (2) and at positions corresponding to the motor additional protector accommodating cavity (13), the motor additional protector pin inserting hole (21) penetrates from the upper surface to the lower surface of the shell cover (2) and is communicated with the motor additional protector accommodating cavity (13), the motor additional protector (5) is matched with the fixing rod embedding cavity (1311), the motor additional protector pin fixing inserting hole (132) and the motor protector pin inserting hole (21) are arranged in the motor additional protector inserting hole (13), and the motor additional protector pin inserting hole (21) is inserted into the motor protector inserting hole (13) accommodating cavity (13).
2. The motor start protector with double protection functions according to claim 1, characterized in that the motor protector accommodation chamber (11) is formed behind the left end of the housing (1), the motor starter accommodation chamber (12) is formed at the right end of the housing (1), and the motor additional protector accommodation chamber (13) is formed in front of the left end of the housing (1).
3. The motor start protector with double protection function according to claim 1, characterized in that the motor additional protector (5) includes a fixing rod (51), a motor additional protector bimetal (52) and a motor additional protector pin (53), the front end of the fixing rod (51) is embedded in a fixing rod embedding cavity (1311) of the fixing rod embedding seat (131), and is defined by a pressing block (26), the pressing block (26) is formed on the housing cover (2), the motor additional protector bimetal (52) and the motor additional protector pin (53) are accommodated in the motor additional protector accommodating cavity (13), a fixing rod matching hole (521) is provided at the center of the motor additional protector bimetal (52) and at a position corresponding to the fixing rod (51), the rear end of the fixing rod (51) is fixedly connected with the motor additional protector bimetal (52) at a position corresponding to the fixing rod matching hole (521), and a bimetal (522) is provided on the left side of the motor protector bimetal (52) in a thickness direction, a bimetal (522) is provided on the left side of the fixing rod (522) and a bimetal (522) is provided on the extending in a thickness direction, a bimetallic strip left contact (5222) is fixed at a position corresponding to the bimetallic strip left contact fixing lug hole (5221), a bimetallic strip left contact (52221) is formed on the end face of one end of the bimetallic strip left contact (5222) facing the motor protector (3), a bimetallic strip right contact fixing lug hole (5231) penetrating through the thickness direction of the bimetallic strip right contact fixing lug (523) is formed on the bimetallic strip right contact fixing lug (523), a bimetallic strip right contact (5232) is fixed at a position corresponding to the bimetallic strip right contact fixing lug hole (5231), a bimetallic strip right contact (52321) is formed on the end face of the bimetallic strip right contact (5232) facing one end of the motor protector plug (53), the upper part of the motor protector plug (53) is in inserted fit with the motor protector plug hole (21), the bimetallic strip additional protector plug (53) extends above the thickness direction of the bimetallic strip right contact fixing lug hole (523), a bimetallic strip right contact (531) extends from the motor protector plug (53) to the side of the motor protector plug (53), the bimetallic strip right contact plug (531) is inserted into the motor protector plug (53) and the electric protector plug (53) is inserted into the electric protector plug hole, the bimetallic strip right contact (52321) is in electrical contact with the motor additional protector pin fixing inserting sheet (531); the motor protector accommodating cavity (11) is separated from the motor additional protector empty accommodating cavity (13) by an accommodating cavity public wall (14), a contact pin caulking groove (141) is formed in the upper left edge of the accommodating cavity public wall (14), and the motor protector (3) extends into the motor additional protector accommodating cavity (13) through the contact pin caulking groove (141).
4. The motor starting protector with double protection functions according to claim 3, characterized in that a static contact pin cavity (111) is arranged on the right side of the motor protector accommodating cavity (11), the motor protector (3) comprises a base (31), a fixed seat (32), a bimetallic strip (33), a heating wire (34), a push rod (35), a bimetallic strip supporting ring (36), a static contact strip (37), a movable contact strip (38) and an inserting sheet (39), the base (31) is a ceramic base, the base (31) is provided with a base cavity (311), a bimetallic strip step seat (3111) is formed around the circumference direction of the base cavity (311) at the cavity opening part of the base cavity (311), the base (31) is accommodated in the motor protector accommodating cavity (11) in a state that the cavity opening of the base cavity (311) faces downwards, a push rod hole (3121) is formed in the center position of the base top wall (312) of the base (31), a first pin transition hole 3122), a second pin transition hole 3122, a flange 3124 of the heating wire 3124 is formed on the base top wall (312), the heating wire 3124 is positioned on the side of the base top wall (312), the first pin transition hole (3124) is matched with the first pin hole 3123 and the second pin hole (3124) and the second pin hole (3123) is positioned on the left side, a pair of fixing base positioning flange matching cavities (3124) respectively corresponding to the front side and the rear side of the ejector rod hole (3121), a fixing base cavity (321) is formed on one side of the downward facing side of the fixing base (32), a pair of fixing base positioning flanges (3211) are formed on the side of the top wall of the fixing base (32) facing the fixing base cavity (321) and at the position corresponding to the pair of fixing base positioning flange matching cavities (3124), an ejector rod yielding hole (322) is formed in the central position of the top wall of the fixing base (32), the ejector rod yielding hole (322) corresponds to the ejector rod hole (3121), a movable contact piece cavity (323), an inserting slot (324), a first electric heating wire leading-out guide hole (325) and a second electric heating wire leading-out guide hole (326) are formed on the top wall of the fixing base (32), the movable contact piece cavity (323) is positioned in the central position of the top wall of the fixing base (32), the electric heating wire leading-out guide hole (325) and the second leading-out guide hole (326) is positioned on the left side of the top wall (32), the bimetallic strip (31) is embedded in the pair of flanges (3111) of the fixing base (3111) and matched with the bimetallic strip cavity (3111), the bimetallic strip supporting ring (36) is also arranged on the bimetallic strip step seat (3111) at a position corresponding to one side of the bimetallic strip (33) opposite to the base cavity (311), the bimetallic strip supporting ring (36) limits the peripheral edge part of the bimetallic strip (33), the electric heating wire (34) is arranged at one side of the bimetallic strip (33) facing to the base cavity (311), one end of the electric heating wire (34) is provided with an electric heating wire first leading-out pin (341), the other end is provided with an electric heating wire second leading-out pin (342), the electric heating wire first leading-out pin (341) is electrically connected with the inserting sheet (39) after sequentially passing through the electric heating wire first leading-out pin transition hole (3122) and the electric heating wire first leading-out pin guide hole (325), the electric heating wire second leading-out pin (342) is electrically connected with the moving sheet (38) after sequentially passing through the electric heating wire second leading-out pin transition hole (3123) and the electric heating wire second leading-out pin (326), the ejector rod (35) is ceramic, the lower end of the ejector rod (35) is provided with a ceramic, the lower end of the electric heating wire (35) is contacted with the moving sheet (37) and the moving sheet (37) is sequentially contacted with the fixing seat (32) after sequentially passing through the base cavity (311), and a static contact (371) is formed at one side of the static contact (37) with one end facing upwards, a static contact pin (372) is formed at the other end, the static contact pin (371) corresponds to the front of the dynamic contact cavity (323), the static contact pin (372) is inserted with the static contact pin cavity (111), the dynamic contact (38) is arranged in the dynamic contact cavity (323), a dynamic contact moving contact (381) is fixed at one side of the front end of the dynamic contact (38) facing downwards, a push rod pushing flange (382) is formed at one side of the middle part facing downwards, a dynamic contact expanding piece (383) is formed at the rear end of the dynamic contact (38) and the state perpendicular to the dynamic contact (38), an outgoing pin fixing connecting lug (383) is formed at the left end of the dynamic contact expanding piece (383), a dynamic contact expanding piece fixing hole (383) is formed at the right end of the dynamic contact expanding piece (383), the dynamic contact pin (326) corresponds to the outgoing pin fixing flange (383) of the first guide hole (383), the electric heating wire is fixed at the second guide hole (383) corresponding to the outgoing pin end of the first guide hole (382), an extension piece fixing boss (327) is formed on the fixing seat (32) at a position corresponding to the movable contact piece extension piece fixing hole (3832), the movable contact piece extension piece (3832) and the movable contact piece (38) are arranged on the fixing seat (32) through the fit of the movable contact piece extension piece fixing hole (3832) and the extension piece fixing boss (327), an inserting piece (39) is inserted into the inserting piece inserting groove (324), the front end of the inserting piece (39) is inserted into the motor additional protector accommodating cavity (13) at a position corresponding to the contact piece inserting groove (141) and folded downwards to form a contact piece foot (391), the contact piece foot (391) is inserted into the motor protector contact piece inserting hole (132), the first leading-out foot (341) is fixedly connected with the inserting piece (39) after leading out of the first leading-out foot (325), the bimetallic strip left contact (52221) is in contact with the front side of the bimetallic strip (391), and the bimetallic strip left contact (52221) is contacted with the bimetallic strip left contact (52221).
5. The motor start protector with double protection functions according to claim 4, characterized in that the movable contact piece movable contact (381) and the static contact piece static contact (371) are silver contacts.
6. The motor start protector with double protection function according to claim 1, characterized in that a starter front pin socket cavity (121) and a starter rear pin socket cavity (122) are provided in the motor housing cavity (12) and at the left end of the motor housing cavity (12) at intervals, the starter front pin socket cavity (121) and the starter rear pin socket cavity (122) correspond to each other in front-back, a starter front pin socket hole (22) penetrating through the thickness direction of the housing cover (2) is provided at the right end of the housing cover (2) and at the position corresponding to the starter front pin socket cavity (121), and a pair of starter rear pin sockets (23) penetrating through the thickness direction of the housing cover (2) are provided at the position corresponding to the starter rear pin socket cavity (122), and the motor starter (4) provided in the motor housing cavity (12) is mated with the starter front pin socket cavity (121), the starter rear pin socket cavity (122), the starter front pin socket hole (22) and the pair of post pin sockets (23).
7. The motor start protector with double protection function according to claim 6, characterized in that a pair of positive temperature coefficient thermistor supporting bosses (123) protruding from the bottom surface of the motor starter accommodating chamber (12) are formed at the bottom of the motor starter accommodating chamber (12), the pair of positive temperature coefficient thermistor supporting bosses (123) corresponding to each other right and left, the motor starter (4) includes a starter front insert (41), a starter rear insert (42), a single reed (43) and a positive temperature coefficient thermistor (44), the positive temperature coefficient thermistor (44) is disposed in the motor starter accommodating chamber (12) in a longitudinal state and supported on the pair of positive temperature coefficient thermistor supporting bosses (123), the starter front insert (41) and the starter rear insert (42) correspond to the front and rear sides of the positive temperature coefficient thermistor (44), respectively, wherein a front contact piece (411) is fixed at the right end of the starter front insert (41) toward one side of the positive temperature coefficient thermistor (44), the front contact piece (412) extends upward from the front end of the starter front contact piece (41), and a starter front pin receptacle (413) is extended downward at a position corresponding to the starter front pin (412) at a lower left end of the starter front insert piece (41), the starter front pin (412) is inserted into the starter front pin receptacle (22) and extended above the cover (2), the starter front pin receptacle (413) is inserted into the starter front pin receptacle cavity (121), a rear contact piece (421) is fixed at a side of the starter rear insert piece (42) facing the positive temperature coefficient thermistor (44), the rear contact piece (421) is in electrical contact with a rear side surface of the positive temperature coefficient thermistor (44), A pair of starter rear pins (422) is extended on the upper edge of the starter rear insert sheet (42), the pair of starter rear pins (422) is inserted into the pair of starter rear pin insertion holes (23) and extends to the upper side of the shell cover (2), shan Huangpian (43) is arranged between the starter rear insert sheet (42) and the positive temperature coefficient thermistor (44) at a position corresponding to the right side of the rear contact sheet (421), a single-leaf spring insertion pin (431) is extended above the single-leaf spring (43), a single-leaf spring insertion pin positioning groove (27 c) is formed on the shell cover (2) at a position corresponding to the single-leaf spring insertion pin (431), the single reed insertion pin (431) is inserted with the single reed insertion pin positioning groove (27 c).
8. The motor starting protector with double protection function according to claim 1, characterized in that a housing left clamping foot seat (15 a) is formed on the left side outer wall of the housing (1), a housing front clamping foot seat (15 b) is formed on the front side outer wall of the housing (1), a housing rear clamping foot seat (15 c) is formed on the rear side outer wall of the housing (1), a housing left clamping foot (24 a) extends downwards on the left side of the housing cover (2), the position of the housing left clamping foot (24 a) corresponds to the housing left clamping foot seat (15 a) and is embedded with the housing left clamping foot seat (15 a), a housing front clamping foot (24 b) extends downwards on the front side of the housing cover (2) and is embedded with the housing front clamping foot seat (15 b), a housing rear clamping foot (24 c) extends downwards on the rear side of the housing cover (2) and is embedded with the housing rear clamping foot (24 c), and the housing rear clamping foot (24 c) is embedded with the housing rear housing cover (15 c); a housing positioning column (16) is formed on the housing (1) and at intervals around the upper edge corresponding to the motor protector accommodating cavity (11), a number of housing positioning column holes (25) which are equal to the number of the housing positioning columns (16) are formed behind the left end of the housing cover (2) and at positions corresponding to the housing positioning columns (16), and the housing positioning column holes (25) are matched with the housing positioning columns (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811029847.7A CN109038500B (en) | 2018-09-05 | 2018-09-05 | Motor starting protector with double protection functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811029847.7A CN109038500B (en) | 2018-09-05 | 2018-09-05 | Motor starting protector with double protection functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109038500A CN109038500A (en) | 2018-12-18 |
| CN109038500B true CN109038500B (en) | 2024-02-02 |
Family
ID=64623357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811029847.7A Active CN109038500B (en) | 2018-09-05 | 2018-09-05 | Motor starting protector with double protection functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109038500B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2127153A1 (en) * | 1997-07-29 | 1999-04-01 | Univ Oviedo | Protection and detection method for incipient failures in the insulation of electric motors using programmable automatons |
| JP2005057960A (en) * | 2003-08-07 | 2005-03-03 | Texas Instr Japan Ltd | Power saving motor starting system |
| CN201663432U (en) * | 2009-12-11 | 2010-12-01 | 森萨塔科技麻省公司 | Motor protector |
| CN102097881A (en) * | 2009-12-11 | 2011-06-15 | 森萨塔科技麻省公司 | Motor protector |
| CN104734569A (en) * | 2015-03-16 | 2015-06-24 | 常熟市天银机电股份有限公司 | Energy-saving type single-phase alternating current machine starting protector |
| CN104734429A (en) * | 2015-03-16 | 2015-06-24 | 常熟市天银机电股份有限公司 | Energy-saving integrated type single-phase alternating current motor protection device |
| CN104734428A (en) * | 2015-03-16 | 2015-06-24 | 常熟市天银机电股份有限公司 | Energy-saving type power-consumption-free single-phase alternating current motor starting protector with structure improvement |
| CN208797563U (en) * | 2018-09-05 | 2019-04-26 | 赵云文 | Electric motor starting protector with double defencive functions |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1209785B (en) * | 1980-05-12 | 1989-08-30 | Necchi Spa | STARTING DEVICE AND THERMAL PROTECTOR IN MOTOR-COMPRESSORS FOR REFRIGERATING SYSTEMS. |
-
2018
- 2018-09-05 CN CN201811029847.7A patent/CN109038500B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2127153A1 (en) * | 1997-07-29 | 1999-04-01 | Univ Oviedo | Protection and detection method for incipient failures in the insulation of electric motors using programmable automatons |
| JP2005057960A (en) * | 2003-08-07 | 2005-03-03 | Texas Instr Japan Ltd | Power saving motor starting system |
| CN201663432U (en) * | 2009-12-11 | 2010-12-01 | 森萨塔科技麻省公司 | Motor protector |
| CN102097881A (en) * | 2009-12-11 | 2011-06-15 | 森萨塔科技麻省公司 | Motor protector |
| CN104734569A (en) * | 2015-03-16 | 2015-06-24 | 常熟市天银机电股份有限公司 | Energy-saving type single-phase alternating current machine starting protector |
| CN104734429A (en) * | 2015-03-16 | 2015-06-24 | 常熟市天银机电股份有限公司 | Energy-saving integrated type single-phase alternating current motor protection device |
| CN104734428A (en) * | 2015-03-16 | 2015-06-24 | 常熟市天银机电股份有限公司 | Energy-saving type power-consumption-free single-phase alternating current motor starting protector with structure improvement |
| CN208797563U (en) * | 2018-09-05 | 2019-04-26 | 赵云文 | Electric motor starting protector with double defencive functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109038500A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2706628B1 (en) | Power cord | |
| EP2706627B1 (en) | Power cord | |
| US6132257A (en) | Electrical socket device with overheating and overcurrent protection | |
| KR900003679B1 (en) | Compressor terminal block and overload protector assembly | |
| CN108899875B (en) | Motor starting protector with double protection functions | |
| CN109038500B (en) | Motor starting protector with double protection functions | |
| US6461195B2 (en) | Safety electric plug with overcurrent protective means | |
| US6102666A (en) | Sealed electrical connector assembly | |
| CN215187850U (en) | Integrated multi-terminal motor starting protector for refrigeration compressor | |
| KR102185587B1 (en) | rail type temperature detecting and current breaking socket | |
| US20060205248A1 (en) | Voltmeter relay with shaped base which contains slots designed to form seatings for the insertion of "faston" connectors | |
| KR102626062B1 (en) | Disk switchover type plug safe parating socket | |
| KR102612447B1 (en) | double contact type temperature detecting and current breaking socket | |
| CN108123644A (en) | A kind of fabrication and installation method of starter | |
| KR102612449B1 (en) | double arc type temperature detecting and current breaking socket | |
| KR102626056B1 (en) | connector combined type plug safe parating socket | |
| CN208797562U (en) | Electric motor starting protector with double protection functions | |
| KR102626063B1 (en) | Sylinder switchover type plug safe parating socket | |
| CN207706079U (en) | A kind of buckle-type starter | |
| US6753491B1 (en) | Circuit breaker for a dual-circuit | |
| CN113453474B (en) | Integrated multi-terminal motor starting protector | |
| KR102626047B1 (en) | vertical shunt type plug safe parating socket | |
| KR102612467B1 (en) | elastic support type temperature detecting and current breaking socket | |
| CN219203076U (en) | Overheat protector for motor of refrigeration compressor | |
| JP2782173B2 (en) | Protection device for hermetic electric compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |