CN107275134B - The assembly method of Miniature heat protector - Google Patents
The assembly method of Miniature heat protector Download PDFInfo
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- CN107275134B CN107275134B CN201710573495.0A CN201710573495A CN107275134B CN 107275134 B CN107275134 B CN 107275134B CN 201710573495 A CN201710573495 A CN 201710573495A CN 107275134 B CN107275134 B CN 107275134B
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- heating wire
- inserted sheet
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- claw
- assembly
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/64—Contacts
- H01H37/70—Resetting means
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- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Thermally Actuated Switches (AREA)
Abstract
The present invention relates to a kind of assembly method of Miniature heat protector, it, which is sequentially included the following steps:, welds bimetal leaf and movable contact, and shell and liner are welded, and then by two welding of above-mentioned weldment one and welding, forms casing assembly；Quiet foot and stationary contact are spot welded, and, again with quiet foot components welding, heating wire component will be formed after heating wire and inserted sheet welding, it is then that the corresponding insert type chamber for being installed to nonmetallic pedestal of above-mentioned heating wire component, quiet foot type chamber, fever wire type is intracavitary, and riveted with nonmetallic pedestal, form base assembly；After base assembly completes assembly, heating wire energization trimming is carried out；Finally insulating part is arranged between above-mentioned casing assembly and base assembly, assembly finishes.Heating wire is contained in a special nonmetallic pedestal by the present invention, will not cause the partial short-circuit of heater, will not form secondary improper conducting；It is safe and reliable, and longer resetting time can be obtained.
Description
Technical field
The present invention relates to a kind of assembly methods of Miniature heat protector, it is mainly used for micromotor or other control circuits
It is protected while the overtemperature of plate, overcurrent.
Background technique
China Patent No. ZL200410098345.1 discloses the invention of a kind of entitled " low current electric motor protector "
The primary structure of patent, the patent is as follows: being made of metal base plate and two metal shells separated, is connected on metal base plate
The bimetallic element of contact-carrying, the metal shell that screw type heating wire both ends are separated with two connect, and spot welding is used to connect, gold
Belong to and being separated between bottom plate and the metal shell of two separation using insulating part resistant to high temperature, after above-mentioned several component connections, that is, is formed
Thermal protector power circuit；Specifically, which includes: metal shell and flange thereon, separated on metal cover
At least one in one cover and the second cover, the first cover and the second cover forms birdcage, and a heater is contained in described
Birdcage in, an a liner i.e. non-metallic insulation part is provided between metal shell and metal cover.
Above-mentioned patent has the disadvantage in that 1, due to the first cover of metal and the second lid of two separation in actual use
Portion and screw type heating wire electric insulation gap are smaller, generally only 0.5-1mm, and heating wire welds rear enclosed in metal cover,
Its position guarantees that electric insulation gap is smaller by welding procedure, is difficult precise measurement, if meeting instantaneous large-current, heating wire
Be powered expansion, and screw type heating wire can generate deformation under fuel factor effect, if heating wire arches up, may separate with two
Metal cover contact short circuit causes current protection characteristic to fail, screw type heating wire can be blown when serious and causes thermal protector bad,
Motor is caused to can not work normally；2, the birdcage of metal cover not only easily leads to the partial short-circuit of heater and loses product
Effect, can also form secondary improper conducting after short circuit sometimes, cause bigger security risk.
In above-mentioned patent, the assembly method of thermal protector is as follows: 1, first welding bimetal leaf and movable contact, then will be another
End and liner welding, last liner end and metal base plate weld to form bottom deck assembly.2, the first cover and stationary contact are spot welded again,
Heating wire both ends and the first cover and the second cover are welded again, form cover component.3, finally insulating part is arranged in bottom plate
Between component and cover component, luggage of going forward side by side eventually forms thermal protector power circuit with riveting.There are the shortcomings that it is as follows: 1,
Metal cover and screw type heating wire the welding rear enclosed separated due to two in metal cover, protect by welding procedure by position
Card, electric insulation gap is smaller, is difficult precise measurement, if meeting instantaneous large-current, heating wire, which is powered, to be expanded, and makees in fuel factor
Deformation can be generated with lower screw type heating wire, if heating wire arches up, the metal cover contact short circuit that may be separated with two causes
The failure of current protection characteristic；2, the birdcage of metal cover not only easily leads to the partial short-circuit of heater and makes product failure, has
When secondary improper conducting can be also formed after short circuit, cause bigger security risk.
Chinese utility model patent ZL201120163297.5, entitled " structure improved compressor thermal protector " are public
A kind of specific compressor thermal protector is opened comprising pedestal, bimetal leaf, heating wire, contact, compound quiet foot, is inserted cover board
Piece, quiet foot and pin；It is provided with heating wire loading type chamber in cover board, heating wire loading type chamber is in semicircular arc, and the two of heating wire
End is welded to connect with inserted sheet and quiet foot respectively.Wherein: the both ends of heating wire and the fat spot welding of the fat point of inserted sheet, quiet foot connect, the hair
Heated filament is contacted with the connection of inserted sheet, quiet foot using cross, and the heating wire loading type that heating wire component is packed into cover board is intracavitary, so
After carry out riveting fixation.Since the heating wire loading type that the heating wire of semicircular arc is fixed on semicircular arc is intracavitary, then carry out
Be powered sizing, if meeting instantaneous large-current, heating wire, which is powered, to be expanded, and screw type heating wire generates shape under fuel factor effect
Become, it is most likely that can tilt upward, heating wire can cause current protection characteristic to fail with bimetal leaf contact short circuit at this time；Problem
Screw type heating wire, which can be blown, when serious causes thermal protector bad, and motor is caused to can not work normally.
In above-mentioned patent, the assembly method of thermal protector is as follows: 1, a pair of compound quiet foot and band are first equipped in pedestal
The bimetal leaf of a pair of of contact, a pair of of contact is in contact with a pair of compound quiet foot at this time, constitutes base assembly；2, by semicircular arc
Heating wire and connection inserted sheet, the welding of quiet foot, then rivet with cover board, constitute cover plate assembly, and 3, close base assembly and cover plate assembly
Hold together connection；4, quiet foot and compound quiet foot exit are welded, then pin and another compound quiet foot exit is welded, eventually formed
Thermal protector power circuit.There are the shortcomings that it is as follows: due to the heating wire of semicircular arc be fixed on semicircular arc heating wire dress
Load type is intracavitary, if meeting instantaneous large-current, heating wire, which is powered, to be expanded, and screw type heating wire generates shape under fuel factor effect
Become, it is most likely that can tilt upward, heating wire can cause current protection characteristic to fail with bimetal leaf contact short circuit at this time.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide a kind of Miniature heat protector
Assembly method, to achieve the purpose that heating wire will not generate thermal deformation because expansion is powered when encountering instantaneous large-current.
The technical proposal adopted by the invention to solve the above technical problems is that: the assembly method of the Miniature heat protector, packet
Shell, bimetal leaf, liner, movable contact, stationary contact, insulating part and the Curved heating wire with both ends, feature is included to exist
In: it is additionally provided with inserted sheet, is fixed with the fat point of inserted sheet, inserted sheet output end and inserted sheet first that is inwardly curved and corresponding to each other thereon
The second claw of claw and inserted sheet, the fat point of the inserted sheet and inserted sheet output end are located at the two sides in inserted sheet middle section, the fat point of inserted sheet
It is welded with the heating wire first end, first claw of inserted sheet and the second claw of inserted sheet is located on inserted sheet middle section and inserted sheet
The two sides of the second claw of first claw and inserted sheet are respectively equipped with inserted sheet groove；Quiet foot, be fixed with thereon the fat point of quiet foot and inwardly
The second claw of the first claw of quiet foot and quiet foot that is curved and corresponding to each other, the fat point of the quiet foot and heating wire the second end weld,
The side of second claw of the first claw of quiet foot and quiet foot is respectively equipped with quiet foot groove, and quiet foot groove one therein is by quiet foot
First claw and the fat point of quiet foot set up separately in its two sides；Nonmetallic pedestal is quadrangle, is provided with insert type chamber, quiet foot
Type chamber, fever wire type chamber, the insert type chamber, quiet foot type chamber, fever wire type chamber respectively with the inserted sheet, quiet foot, heating wire phase
Matching, the insert type chamber, quiet foot type chamber, fever wire type chamber pass through four closing steps and four positioning grooves realizations, institute
The fever wire type chamber stated is located at centre, and insert type chamber and quiet foot type chamber are located at two sides, at least two in four closing steps
A middle bench, two middle benches are located on the middle part inward position of quadrangle long side, and four positioning grooves are all provided with
It sets in the long side of quadrangle.
The assembly method of the Miniature heat protector sequentially includes the following steps:
1, the bimetal leaf and movable contact are welded, forms weldment one, and shell and liner are welded, forms weldering
Then fitting two welds above-mentioned weldment one and weldment two, form casing assembly.
2, the quiet foot and stationary contact are spot welded, form weldment three, and by after heating wire and inserted sheet welding again with weldering
Fitting three welds, and forms heating wire component, then by the corresponding insert type chamber for being installed to nonmetallic pedestal of above-mentioned heating wire component,
Quiet foot type chamber, fever wire type are intracavitary, and rivet with nonmetallic pedestal, form base assembly.
3, after the base assembly completes assembly, heating wire energization trimming is carried out.
4, the insulating part is arranged between above-mentioned casing assembly and base assembly, assembly finishes, at this point, heating wire
When encountering instantaneous large-current thermal deformation will not be generated because expansion is powered.
When base assembly of the present invention assembles, welded again with quiet foot after heating wire and inserted sheet welding, by heating wire
When component is packed into nonmetallic pedestal, the first claw of inserted sheet of the inserted sheet, the second claw of inserted sheet are respectively and in nonmetallic pedestal
The corresponding riveting of two positioning grooves, the first claw of quiet foot of the quiet foot, the second claw of quiet foot are respectively and in nonmetallic pedestal
The corresponding riveting of other two positioning groove.So that more simply and reliablely heating wire component is fitted into nonmetallic pedestal.
The present invention in the described insulating part upper surface setting there are two baffle, when the insulating part be located at casing assembly and
When between base assembly, the both ends of heating wire are respectively aligned to two baffles higher than insulating part upper surface.So as to heating wire
The positioning insulation of two output ends, increases electrical strength.
The present invention after energization trimming, carries out heating wire sizing flatness and heating wire is fixed in the heating wire
The detection of type height, detection are carried out using laser testing head noncontacting measurement method.It avoid heating wire sizing flatness have compared with
Heating wire, which is powered, when large deviation expands, and causes to blow the consequence that heating wire causes motor that can not work；Simultaneously, it is thus also avoided that fever
Silk sizing height will have a direct impact on protector cold conditions actuation time and hot overload characteristic and lead to motor when having relatively large deviation
The consequence that can not work normally.
The insulating part of the present invention is clamped by insulating part dog-ear and base assembly, and then casing assembly leads to again
It crosses shell dog-ear and base assembly rivets, connect simple and reliable.
Compared with prior art, the present invention have the advantage that the design of Miniature heat protector more rationally, safety more
Height, the service life is longer, and heating wire is contained in a special nonmetallic pedestal by assembly method, will not cause heater
Partial short-circuit, secondary improper conducting will not be formed；In 3mm or more, use is safer in heating wire electric insulation gap, and
Closed heater accommodating chamber preferably protects heater, and can obtain longer resetting time；It is formed by heating wire smooth
The detection of degree and heating wire sizing height, ensure that the consistency of heating wire sizing parameter, it is ensured that the movement of thermal protector cold conditions
The stability of time and hot overload characteristic.
Detailed description of the invention
Fig. 1 is the components broken down schematic perspective view of Miniature heat protector of the present invention.
Fig. 2 is axonometric schematic diagram of the Miniature heat protector of the present invention based on shell surface.
Fig. 3 is schematic perspective view of the Miniature heat protector of the present invention based on non-metal bottom seat surface.
Fig. 4 is schematic perspective view of the Miniature heat protector of the present invention based on the inside of shell.
Fig. 5 is the schematic perspective view of Miniature heat protector bimetal leaf component of the present invention.
Fig. 6 is schematic perspective view of the Miniature heat protector of the present invention based on the inside of shell.
Fig. 7 is the schematic perspective view that Miniature heat protector of the present invention removes shell and nonmetallic pedestal.
Fig. 8 is the schematic perspective view of Miniature heat protector insulating part of the present invention.
Fig. 9 is the schematic perspective view that Miniature heat protector of the present invention removes shell and insulating part.
Figure 10 is the schematic perspective view of the nonmetallic pedestal of Miniature heat protector of the present invention.
Figure 11 is the schematic perspective view of Miniature heat protector heating wire component of the present invention.
Figure 12 is the schematic perspective view of Miniature heat protector inserted sheet of the present invention.
Figure 13 is the schematic perspective view of the quiet foot of Miniature heat protector of the present invention.
Figure 14 is the overall structure schematic cross-sectional view of Miniature heat protector of the present invention.
Figure 15 is the enlarged structure schematic diagram of Figure 10 in the present invention.
Figure 16 is the process flow diagram of assembly method of the present invention.
Figure 17 is another structural schematic diagram of heating wire component of the present invention.
Figure 18 is another structural schematic diagram of the nonmetallic pedestal of the present invention.
Figure 19 is the third structural schematic diagram of heating wire of the present invention.
In figure: shell 1, bimetal leaf 2, liner 3, movable contact 41, stationary contact 42, insulating part 5, heating wire 6, inserted sheet 7 are quiet
Foot 8, nonmetallic pedestal 9, shell output end 11, shell dog-ear 1, shell dog-ear 2 122, round boss 13, rectangle is convex
Platform 14, outer casing groove 15, bimetal leaf connecting pin 1, bimetal leaf connecting pin 2 22, baffle 1, baffle 2 52, dog-ear
One 53, dog-ear 2 54, type chamber 55, heating wire first end 61, heating wire the second end 62, inserted sheet output end 71, inserted sheet first
Claw 72, the second claw of inserted sheet 73, the fat point 74 of inserted sheet, inserted sheet groove 1, inserted sheet groove 2 76, inserted sheet protrusion 1, inserted sheet
Groove 3 78, inserted sheet protrusion 2 79, inserted sheet groove 4 710, inserted sheet groove 5 711, inserted sheet middle section 713, the quiet fat point 81 of foot, quiet foot
First claw 82, quiet the second claw of foot 83, quiet foot protrusion 1, quiet foot groove 1, quiet foot groove 2 86, quiet foot protrusion two
87, quiet foot groove 3 88, positioning groove 1, positioning groove 2 92, positioning groove 3 93, positioning groove 4 94, closing step
One 95, step 2 96 is closed, step 3 97 is closed, closes step 4 98, generate heat wire type chamber 99, insert type chamber 910, quiet foot type chamber
911, the first positioning convex platform 912, the second positioning convex platform 913, third positioning convex platform 914, the 4th positioning convex platform 915, the 5th positioning
Boss 916, casing assembly 101, base assembly 102, heating wire component 103, heating wire loading type chamber boss 9111.
Specific embodiment
It elaborates with reference to the accompanying drawing to highly preferred embodiment of the present invention.
Referring to Fig. 1~Figure 15, Miniature heat protector of the invention include shell 1, bimetal leaf 2, liner 3, movable contact 41,
Stationary contact 42, insulating part 5, heating wire 6, inserted sheet 7, quiet foot 8, nonmetallic pedestal 9.
It is provided with rectangle boss 14 in shell 1, round boss 13 is provided on rectangle boss 14, one group one, band dynamic
The bimetal leaf 2 of contact 41 is reliably connected by liner 3 and round boss 13, constitutes casing assembly 101, and make weld strength
Better effect.
Shell 1 is provided with shell output end 11, also directly connects on shell 1 there are two aduncate shell dog-ear 1,
Shell dog-ear 2 122, they and nonmetallic pedestal 9 fasten, and connect in order to which base assembly 102 matches, shell 1 is additionally provided with outer
Shell groove 15, it can correspond to the rectangle boss 14 on the inside of shell.
Bimetal leaf connecting pin 1, bimetal leaf connecting pin 2 22 are provided on bimetal leaf 2, liner 3 is welded on double
On sheet metal connecting pin 1, movable contact 41 is welded on bimetal leaf connecting pin 2 22.
Inserted sheet 7, quiet foot 8 and heating wire 6 are installed in nonmetallic pedestal 9, a stationary contact 42, fever are connected on quiet foot 8
The both ends of silk 6 are connect with inserted sheet 7 and quiet foot 8 respectively；Closing step 1, closing step two are provided with around nonmetallic pedestal 9
96, step 3 97, closing step 4 98 are closed；It is nonmetallic to guarantee that nonmetallic pedestal 9 and inserted sheet 7, quiet foot 8 are reliably connected
There are four positioning groove, that is, positioning groove 1, positioning groove 2 92, positioning grooves 3 93, positioning groove for the setting of 9 surrounding of pedestal
4 94；After inserted sheet 7, quiet foot 8 and nonmetallic pedestal 9 with heating wire 6 connect, base assembly 102 is constituted；H is electric insulation
Gap.
Nonmetallic pedestal 9 is quadrangle, and the insert type chamber 910 of installation inserted sheet 7, the quiet foot of the quiet foot 8 of installation is arranged inside
The fever wire type chamber 99 of type chamber 911 and installation heating wire 6；The wire type chamber 99 that generates heat is located at centre, insert type chamber 910 and quiet foot type chamber
911 are located at two sides；It closes step 1, closing step 2 96, closing step 3 97, close in step 4 98 at least there are two in
Portion's step, i.e. closing step 3 97 and closing step 4 98, they are located on the middle part inward position of quadrangle long side, position recessed
Slot 1, positioning groove 2 92, positioning groove 3 93, positioning groove 4 94 are arranged in the long side of quadrangle, the quadrangle
Long side on be additionally provided with the first positioning convex platform 912, the second positioning convex platform 913, third positioning convex platform 914, the 4th positioning convex platform
915, the 5th positioning convex platform 916；So that inserted sheet 7, quiet foot 8 and nonmetallic pedestal 9 all around position more reliable, safety after connecting
Property is higher.In the present embodiment, heating wire 6 does not have short-circuit risks close to nonmetallic pedestal 9.
Fever wire type chamber 99 coincide substantially in circular arc type and 6 shape of heating wire, so that the sizing position of heating wire 6 is more quasi-
Really, technical parameter is more stable.
It is provided with inserted sheet output end 71, the first claw of inserted sheet 72, the second claw of inserted sheet 73, the fat point 74 of inserted sheet on inserted sheet 7, inserts
The fat point 74 of piece is located at the two sides in inserted sheet middle section 713, the fat point 74 of inserted sheet and heating wire first end 61 with inserted sheet output end 71
Welding, the first claw of inserted sheet 72 and the second claw of inserted sheet 73 is located on inserted sheet middle section 713 and their two sides are respectively equipped with inserted sheet
Groove 1, inserted sheet groove 2 76, inserted sheet groove 4 710, inserted sheet groove 5 711；Inserted sheet protrusion 1, inserted sheet groove 3 78,
, that is, there is the side of heating wire first end 61 in side of the inserted sheet protrusion 2 79 to place heating wire 6.
The fat point 81 of quiet foot, the first claw of quiet foot 82, the second claw of quiet foot 83, the quiet fat point 81 of foot and hair are provided on quiet foot 8
Heated filament the second end 62 welds, and the side of quiet the first claw of foot 82 and the second claw of quiet foot 83 is respectively equipped with quiet one 85 He of foot groove
Quiet foot groove 2 86, wherein quiet foot groove 1 sets up the first quiet foot claw 82 with the fat point 81 of quiet foot, quiet foot protrusion 1 separately
Its two sides, quiet foot groove 2 86 set up quiet the second claw of foot 83 and quiet foot protrusion 2 87 in its two sides separately；In quiet foot groove 3 88
To place the other side of heating wire 6, that is, there is the side of heating wire the second end 62.
Heating wire 6 and the connection of the fat point 74 of inserted sheet, the fat point 81 of quiet foot are fixed using cross spot welding, so that with heating wire 6
Welding it is stronger reliable；Helically the fever wire type chamber 99 in type and nonmetallic pedestal 9 coincide heating wire 6, and heating wire 6 is logical
Heat storage capacity is stronger when electric, so that thermal protector is to obtain longer resetting time.
Heating wire component 103 is packed into nonmetallic pedestal 9, and the first claw of inserted sheet 72, the second claw of inserted sheet 73 of inserted sheet 7 are distinguished
It is correspondingly connected with positioning groove 1, the positioning groove 2 92 of nonmetallic pedestal 9, the first claw of quiet foot 82, the quiet foot of quiet foot 8
Two claws 83 are correspondingly connected with the positioning groove 3 93 of nonmetallic pedestal 9, positioning groove 4 94 respectively.
Insulating part 5 is made of heat-resisting material, and 5 intermediate cavity of insulating part, 55 two sides are provided with the baffle one of diagonally opposing corner
51, baffle 2 52, to use 6 liang of output ends of heating wire, that is, heating wire first end 61, the positioning insulation of heating wire the second end 62,
Increase electrical strength；Dog-ear 1, dog-ear 2 54 are additionally provided on insulating part 5, they be symmetrical arranged and curve inwardly, so as to
The mating connection of base assembly 102.In the present embodiment, insulating part 5 is a soft plastic sheet, it is served as a contrast in shell 1 and non-metal bottom
Between seat 9, after shell 1 and nonmetallic 9 riveted of pedestal, it is clipped in the middle, and plays buffer action.
After casing assembly 101, base assembly 102, insulating part 6 are assembled, that is, form Miniature heat protector.So that this
The structure design of invention is more rationally, installation is easier, safety is higher, the service life is longer, its sealing performance is preferable in addition, heat
Protector has explosion prevention function.
After nonmetallic pedestal 9, shell 1, insulating part 5 assemble, movable contact 41, stationary contact 42 are contacted, and composition is powered back
Road, after the fine tuning of special mechanical device, technical parameter reaches specified value；Shell output end 11 and inserted sheet output end 71 are in Tongfang
To setting, installation connection is more convenient, and sealing performance is preferable, and thermal protector has explosion prevention function.
Referring to Fig. 1-Figure 16, the assembly method of above-mentioned Miniature heat protector is sequentially included the following steps:
1, bimetal leaf 2 and movable contact 41 are welded, forms weldment one, and by 3 welding of shell 1 and liner, form weldering
Then fitting two welds above-mentioned weldment one and weldment two, form casing assembly 101；
2, quiet foot 8 is welded with stationary contact 42, forms weldment three, and after heating wire 6 and inserted sheet 7 are welded again with welding
Part three welds, and forms heating wire component 103, then by the corresponding inserted sheet for being installed to nonmetallic pedestal 9 of above-mentioned heating wire component 103
Type chamber 910, generates heat in wire type chamber 99 at quiet foot type chamber 911, and rivets with nonmetallic pedestal 9, forms base assembly 102.
3, after base assembly 102 completes assembly, 6 energization trimming of heating wire is carried out.
4, insulating part 5 is arranged between above-mentioned casing assembly 101 and base assembly 102, assembly finishes, at this point, fever
Silk 6 will not generate thermal deformation because expansion is powered when encountering instantaneous large-current.
In the present embodiment, when base assembly 102 assembles, heating wire 6 and inserted sheet 7 are welded with quiet foot 8 again after welding, will
When heating wire component 103 is packed into nonmetallic pedestal 9, the first claw of inserted sheet 72 of the inserted sheet 7, the second claw of inserted sheet 73 respectively with
The corresponding riveting of two positioning groove, that is, positioning grooves 1 in nonmetallic pedestal 9, positioning groove 2 92, the quiet foot of quiet foot 8 the
One claw 82, the second claw of quiet foot 83 respectively with other two positioning groove, that is, positioning groove 1, fixed in nonmetallic pedestal 9
The corresponding riveting of position groove 2 92.
When insulating part 5 is between casing assembly 101 and base assembly 102, the heating wire first end of heating wire 6
61, heating wire the second end 62 is respectively aligned to two baffles i.e. baffle 1, baffle 2 52 higher than 5 upper surface of insulating part.
In heating wire 6 after energization trimming, carries out be formed flatness and the heating wire 6 of heating wire 6 and be formed height
Detection, detection are carried out using laser testing head noncontacting measurement method.The heating wire is formed flatness and heating wire sizing height
Detection method is separately applied for a patent, is no longer described in detail.
Insulating part 5 is clamped by insulating part dog-ear, that is, dog-ear 1, dog-ear 2 54 and base assembly 102, then shell group
Part 101 is riveted by shell dog-ear 1, shell dog-ear 2 122 and base assembly 102 again.
Referring to Figure 17-Figure 18, in the present embodiment, heating wire 6 is wire rod plate armature, matched non-metal bottom
It is provided with heating wire loading type chamber 911 in seat 90, is provided with heating wire positioning convex platform 9111 in heating wire loading type chamber 911, with
Guarantee that the positioning of heating wire 6 is used, it is ensured that the consistency of technical parameter；Remaining structure in the present embodiment it is same as Example 1 or
It is equivalent, no longer describe.
Referring to Figure 19, in the present embodiment, heating wire 6 is band plate armature, matched nonmetallic pedestal with
Identical in Figure 18, remaining structure is same as Example 1 or equivalent, no longer describes.
" Miniature heat protector " as described herein refers to: length dimension is not more than 28mm, and width dimensions are not more than 15mm, high
Spend the thermal protector that size is not more than 10mm.
" Curved heating wire " as described herein refers to: the shape of the heating wire can be continuous for helical buckling shape or plane
Curved etc., such as wire spiral type, wire rod is plate, and band is plate etc..
By foregoing description, those skilled in the art can implement.
Above content is only to structure of the invention example explanation described in this specification；Moreover, this hair
The title that bright components are taken can also be different, what all structure, feature and principles described according to the invention patent design were done etc.
Effect or simple change, are included in the scope of protection of the invention patent.
Claims (5)
1. a kind of assembly method of Miniature heat protector, the Miniature heat protector include shell, bimetal leaf, liner, movable contact,
Stationary contact, insulating part and the Curved heating wire with both ends, it is characterised in that: be additionally provided with inserted sheet, be fixed with thereon slotting
The fat point of piece, inserted sheet output end and the second claw of the first claw of inserted sheet and inserted sheet that is inwardly curved and corresponding to each other, the inserted sheet
Fat point and inserted sheet output end are located at the two sides in inserted sheet middle section, and the fat point of inserted sheet and the heating wire first end weld, described
The first claw of inserted sheet and the second claw of inserted sheet is located on inserted sheet middle section and the second claw of the two sides of the first claw of inserted sheet and inserted sheet
Two sides be respectively equipped with inserted sheet groove；Quiet foot is fixed with the fat point of quiet foot and quiet foot first that is inwardly curved and corresponding to each other thereon
The second claw of claw and quiet foot, the fat point of the quiet foot and heating wire the second end weld, and the one of first claw of quiet foot
The side of the second claw of side and quiet foot is respectively equipped with quiet foot groove, and quiet foot groove therein is by quiet the first claw of foot and the fat point of quiet foot
Set up separately in its two sides；Nonmetallic pedestal is quadrangle, is provided with insert type chamber, quiet foot type chamber, fever wire type chamber, should
Insert type chamber, quiet foot type chamber, fever wire type chamber match with the inserted sheet, quiet foot, heating wire respectively, the insert type
Chamber, quiet foot type chamber, fever wire type chamber realize that the fever wire type chamber is located at by four closing steps and four positioning grooves
Centre, insert type chamber and quiet foot type chamber are located at two sides, at least there are two middle bench in four closing steps, described two
A middle bench is located on the middle part inward position of quadrangle long side, and four positioning grooves are arranged in the long side of quadrangle；
The assembly method of the Miniature heat protector sequentially includes the following steps:
The bimetal leaf and movable contact are welded, weldment one is formed, and shell and liner are welded, forms weldment
Two, then the weldment one and weldment two are welded, form casing assembly；
The quiet foot and stationary contact are spot welded, form weldment three, and by after heating wire and inserted sheet welding again with weldment three
Welding forms heating wire component, then by the corresponding insert type chamber for being installed to nonmetallic pedestal of the heating wire component, quiet foot type
Chamber, fever wire type are intracavitary, and rivet with nonmetallic pedestal, form base assembly；
After the base assembly completes assembly, heating wire energization trimming is carried out；
The insulating part is arranged between the casing assembly and base assembly, assembly finishes, at this point, heating wire is encountering
When instantaneous large-current thermal deformation will not be generated because expansion is powered.
2. the assembly method of Miniature heat protector according to claim 1, it is characterised in that: the base assembly assembly
When, it is welded again with quiet foot after heating wire and inserted sheet welding, when heating wire component is packed into nonmetallic pedestal, the inserted sheet is inserted
The first claw of piece, the second claw of inserted sheet respectively it is corresponding with two positioning grooves in nonmetallic pedestal riveting, the quiet foot it is quiet
The riveting corresponding with other two positioning groove in nonmetallic pedestal respectively of the first claw of foot, the second claw of quiet foot.
3. the assembly method of Miniature heat protector according to claim 1 or 2, it is characterised in that: in the insulating part
There are two baffles for upper surface setting, when the insulating part is between casing assembly and base assembly, the both ends of heating wire
Portion is respectively aligned to two baffles higher than insulating part upper surface.
4. the assembly method of Miniature heat protector according to claim 1 or 2, it is characterised in that: in the heating wire
After energization trimming, the detection of heating wire sizing flatness and heating wire sizing height is carried out, detection uses Laser Measuring
Head noncontacting measurement method is tried to carry out.
5. the assembly method of Miniature heat protector according to claim 1 or 2, it is characterised in that: the insulating part is logical
It crosses insulating part dog-ear and base assembly is clamped, then casing assembly passes through shell dog-ear again and base assembly rivets.
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| CN107275134B true CN107275134B (en) | 2019-03-05 |
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| CN108597927A (en) * | 2018-01-23 | 2018-09-28 | 东莞市贝特电子科技股份有限公司 | A kind of manufacturing process of open type temperature controller |
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| US5206622A (en) * | 1992-04-10 | 1993-04-27 | Texas Instruments Incorporated | Protector device with improved bimetal contact assembly and method of making |
| CN1627586A (en) * | 2003-12-03 | 2005-06-15 | 得州仪器公司 | Low current electric motor protector |
| CN201122566Y (en) * | 2007-10-23 | 2008-09-24 | 杭州星帅尔电器有限公司 | Overload protection device |
| CN202111002U (en) * | 2011-05-20 | 2012-01-11 | 杭州星帅尔电器股份有限公司 | Compressor thermal protector having improved structure |
| CN205789714U (en) * | 2016-05-23 | 2016-12-07 | 森萨塔科技（常州）有限公司 | Self-retaining protector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200296482Y1 (en) * | 2002-08-27 | 2002-11-23 | 텍사스 인스트루먼트 코리아 주식회사 | Overload protector with improved sealing capability |
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|---|---|---|---|---|
| US5206622A (en) * | 1992-04-10 | 1993-04-27 | Texas Instruments Incorporated | Protector device with improved bimetal contact assembly and method of making |
| CN1627586A (en) * | 2003-12-03 | 2005-06-15 | 得州仪器公司 | Low current electric motor protector |
| CN201122566Y (en) * | 2007-10-23 | 2008-09-24 | 杭州星帅尔电器有限公司 | Overload protection device |
| CN202111002U (en) * | 2011-05-20 | 2012-01-11 | 杭州星帅尔电器股份有限公司 | Compressor thermal protector having improved structure |
| CN205789714U (en) * | 2016-05-23 | 2016-12-07 | 森萨塔科技（常州）有限公司 | Self-retaining protector |
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