CN107275134A - The assembly method of Miniature heat protector - Google Patents
The assembly method of Miniature heat protector Download PDFInfo
- Publication number
- CN107275134A CN107275134A CN201710573495.0A CN201710573495A CN107275134A CN 107275134 A CN107275134 A CN 107275134A CN 201710573495 A CN201710573495 A CN 201710573495A CN 107275134 A CN107275134 A CN 107275134A
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- heating wire
- inserted sheet
- quiet
- claw
- quiet pin
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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
-
- 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
-
- 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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- Physics & Mathematics (AREA)
- 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 is carried out according to the following steps：Bimetal leaf and movable contact are welded, and shell is welded with pad, then above-mentioned weldment one and welding two are welded, casing assembly is formed；Quiet pin and stationary contact are spot welded, and by after heating wire and inserted sheet welding again with quiet pin components welding, form heating wire component, above-mentioned heating wire component correspondence be then installed to the inserted sheet die cavity of nonmetallic base, quiet foot type chamber, in heating wire die cavity, and riveted with nonmetallic base, form base assembly；After base assembly completes assembling, heating wire energization trimming is carried out；Finally insulating part is arranged between above-mentioned casing assembly and base assembly, assembling is finished.Heating wire is contained in a special nonmetallic base by the present invention, will not be caused the partial short-circuit of heater, will not also be formed 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 method of Miniature heat protector, it is mainly used in micromachine or other control circuits
Protected while the overtemperature of plate, overcurrent.
Background technology
China Patent No. ZL200410098345.1 discloses the invention of a kind of entitled " low current electric motor protector "
Patent, the primary structure of the patent is as follows：It is made up of, is connected with metal base plate metal base plate and two metal shells separated
The metal shell connection of the bimetallic element of contact-carrying, screw type heating wire two ends and two separation, it uses spot welding to connect, gold
Separated, after above-mentioned several part connections, that is, formed using resistant to elevated temperatures insulating part between category bottom plate and the metal shell of two separation
Thermal protector power circuit；Specifically, the patent characteristic includes：Separated on metal shell and flange thereon, metal cover
At least one in one cap and the second cap, the first cap and the second cap forms birdcage, and a heater is contained in described
Birdcage in, an a pad i.e. non-metallic insulation part is provided between metal shell and metal cover.
Above-mentioned patent has the following disadvantages in actual use：1st, due to the cap of metal first and the second lid of two separation
Portion and screw type heating wire electric insulation gap are smaller, typically only 0.5-1mm, and heating wire welds rear enclosed in metal cover,
Its position ensures that electric insulation gap is smaller by welding procedure, it is difficult to accurate measurement, if meeting instantaneous large-current, heating wire
Be powered expansion, and screw type heating wire can produce deformation under fuel factor effect, and such as heating wire arches up, and may be separated 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,
Cause motor can not normal work；2nd, the birdcage of metal cover, is not only easily caused the partial short-circuit of heater and loses product
Effect, can also form secondary improper conducting after short circuit, cause bigger security risk sometimes.
In above-mentioned patent, the assembly method of thermal protector is as follows：1st, first bimetal leaf and movable contact are welded, then will be another
End and pad welding, last liner end and metal base plate weld to form bottom deck assembly.2nd, the first cap and stationary contact are spot welded again,
Heating wire two ends and the first cap and the second cap are welded again, cap component is formed.3rd, insulating part is finally arranged on bottom plate
Between component and cap component, luggage of going forward side by side eventually forms thermal protector power circuit with riveting.The shortcoming of presence is as follows：1、
Because the metal cap and screw type heating wire of two separation weld rear enclosed in metal cover, its position is protected by welding procedure
Card, electric insulation gap is smaller, it is difficult to accurate measurement, if meeting instantaneous large-current, heating wire, which is powered, to be expanded, and is made in fuel factor
Deformation can be produced with lower screw type heating wire, such as heating wire arches up, may caused with two metal cover contact short circuits separated
Current protection characteristic fails；2nd, the birdcage of metal cover, is not only easily caused the partial short-circuit of heater and makes product failure, have
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 " is public
Opened a kind of specific compressor thermal protector, it include base, cover plate, bimetal leaf, heating wire, contact, be combined quiet pin, insert
Piece, quiet pin and pin；Heating wire is provided with cover plate and loads die cavity, it is in semicircular arc, the two of heating wire that heating wire, which loads die cavity,
End is welded to connect with inserted sheet and quiet pin respectively.Wherein：The two ends of heating wire are connected with the fat point of inserted sheet, the fat spot welding of quiet pin, the hair
Heated filament is contacted with the connection of inserted sheet, quiet pin using cross, heating wire component is loaded to the heating wire loading type intracavitary of cover plate, so
Riveting fixation is carried out afterwards.Because the heating wire of semicircular arc is fixed on the heating wire loading type intracavitary of semicircular arc, then carry out
Be powered sizing, if meeting instantaneous large-current, and heating wire, which is powered, to be expanded, and screw type heating wire produces shape under fuel factor effect
Become, it is most likely that can tilt upward, now heating wire can cause current protection characteristic to fail with bimetal leaf contact short circuit；Problem
Can blow screw type heating wire when serious causes thermal protector bad, causes motor can not normal work.
In above-mentioned patent, the assembly method of thermal protector is as follows：1st, first it is provided with base a pair and is combined quiet pin and band
The bimetal leaf of a pair of contacts, now a pair of contacts with a pair be combined quiet pin be in contact, constitute base assembly；2nd, by semicircular arc
Heating wire and connection inserted sheet, the welding of quiet pin, then with cover plate riveting, constitute cover plate assembly, 3, close base assembly and cover plate assembly
Hold together connection；4th, quiet pin and compound quiet pin exit are welded, then pin and another compound quiet pin exit is welded, eventually formed
Thermal protector power circuit.The shortcoming of presence is as follows：Because the heating wire of semicircular arc is fixed on the heating wire dress of semicircular arc
Carry in die cavity, if meeting instantaneous large-current, heating wire, which is powered, to be expanded, and screw type heating wire produces shape under fuel factor effect
Become, it is most likely that can tilt upward, now heating wire can cause current protection characteristic to fail with bimetal leaf contact short circuit.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and provide a kind of Miniature heat protector
Assembly method, to reach that heating wire will not produce the purpose of thermal deformation when running into instantaneous large-current because expansion is powered.
The present invention solves the technical scheme that is used of above-mentioned technical problem：The assembly method of the Miniature heat protector, bag
Shell, bimetal leaf, pad, movable contact, stationary contact, insulating part and the Curved heating wire with both ends are included, its feature exists
In：Inserted sheet is additionally provided with, the fat point of inserted sheet, inserted sheet output end and inserted sheet first that is inwardly curved and corresponding to each other are fixed with thereon
Claw and the claw of inserted sheet second, the fat point of described inserted sheet are located at the both sides in inserted sheet stage casing, the fat point of inserted sheet with inserted sheet output end respectively
Welded with the heating wire first end, the described claw of inserted sheet first and the claw of inserted sheet second are located on inserted sheet stage casing and they
Both sides be respectively equipped with inserted sheet groove；Quiet pin, is fixed with the fat point of quiet pin and quiet pin first that is inwardly curved and corresponding to each other thereon
Claw and the claw of quiet pin second, the fat point of described quiet pin and heating wire the second end are welded, the described claw of quiet pin first and quiet
The side of the claw of pin second is respectively equipped with quiet pin groove, and one of them quiet pin groove is by one of them quiet pin claw and the fat point of quiet pin
Set up separately in its both sides；Nonmetallic base, it is quadrangle, is provided with the inserted sheet matched with inserted sheet, quiet pin and heating wire
Die cavity, quiet foot type chamber, heating wire die cavity, they are realized by four closing steps and four detents, described heating wire
Die cavity is located at centre, and inserted sheet die cavity and quiet foot type chamber are located at least two middle benches in both sides, four closing steps,
They are located on the middle part inward position on the long side of quadrangle, and four detents are arranged on the long side of quadrangle.
The assembly method of above-mentioned Miniature heat protector is carried out according to the following steps：
1st, described bimetal leaf and movable contact are welded, forms weldment one, and shell is welded with pad, form weldment
Two, then above-mentioned weldment one and welding two are welded, casing assembly is formed.
2nd, described quiet pin and stationary contact are spot welded, form weldment three, and by after heating wire and inserted sheet welding again with weldering
Connect three welding, form heating wire component, then above-mentioned heating wire component correspondence is installed to the inserted sheet die cavity, quiet of nonmetallic base
In foot type chamber, heating wire die cavity, and riveted with nonmetallic base, form base assembly.
3rd, after described base assembly completes assembling, heating wire energization trimming is carried out.
4th, described insulating part is arranged between above-mentioned casing assembly and base assembly, assembling is finished, now, heating
Silk will not produce thermal deformation when running into instantaneous large-current because expansion is powered.
During base assembly of the present invention assembling, heating wire with quiet pin with welding again after inserted sheet welding, by heating wire
When component loads nonmetallic base, the claw of inserted sheet first of the inserted sheet, the claw of inserted sheet second respectively with nonmetallic base
Two detents correspondence is riveted, the claw of quiet pin first of the quiet pin, the claw of quiet pin second respectively with nonmetallic base
Two other detent correspondence is riveted.So as to which more simply and reliablely heating wire component is fitted into nonmetallic base.
The present invention described insulating part upper surface is provided with two baffle plates, when described insulating part be located at casing assembly with
When between base assembly, the both ends of heating wire are respectively aligned to two baffle plates 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 described heating wire
The detection of type height, detection is carried out using laser testing head noncontacting measurement method.It avoid heating wire sizing flatness have compared with
Heating wire, which is powered, during large deviation expands, and causes to blow the consequence that heating wire causes motor not work；Simultaneously, it is thus also avoided that heating
Silk sizing height, which has, can directly affect protector cold conditions actuation time and hot overload characteristic and cause motor during relatively large deviation
Can not normal work consequence.
Described insulating part of the present invention is led to again by insulating part knuckle and base assembly clamping, then casing assembly
Cross shell knuckle to rivet with base assembly, connect simple and reliable.
The present invention compared with prior art, with advantages below：The design of Miniature heat protector more reasonable, security is more
High, service life is longer, and heating wire is contained in a special nonmetallic base by assembly method, will not cause heater
Partial short-circuit, will not also form secondary improper conducting；Heating wire electric insulation gap is in more than 3mm, using safer, and
The heater accommodating chamber of closing, preferably protects heater, and can obtain longer resetting time；Shaped by heating wire smooth
The detection of degree and heating wire sizing height, it is ensured that the uniformity of heating wire sizing parameter, it is ensured that thermal protector cold conditions is acted
Time and the stability of hot overload characteristic.
Brief description of the drawings
Fig. 1 is the components broken down dimensional structure diagram 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 dimensional structure diagram of the Miniature heat protector of the present invention based on non-metal bottom seat surface.
Fig. 4 is dimensional structure diagram of the Miniature heat protector of the present invention based on the inside of shell.
Fig. 5 is the dimensional structure diagram of Miniature heat protector bimetal leaf part of the present invention.
Fig. 6 is dimensional structure diagram of the Miniature heat protector of the present invention based on the inside of shell.
Fig. 7 is the dimensional structure diagram that Miniature heat protector of the present invention removes shell and nonmetallic base.
Fig. 8 is the dimensional structure diagram of Miniature heat protector insulating part of the present invention.
Fig. 9 is the dimensional structure diagram that Miniature heat protector of the present invention removes shell and insulating part.
Figure 10 is the dimensional structure diagram of the nonmetallic base of Miniature heat protector of the present invention.
Figure 11 is the dimensional structure diagram of Miniature heat protector heating wire component of the present invention.
Figure 12 is the dimensional structure diagram of Miniature heat protector inserted sheet of the present invention.
Figure 13 is the dimensional structure diagram of the quiet pin 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.
The mplifying structure schematic diagram that Figure 15 is 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 representation of heating wire component of the present invention.
Figure 18 is another structural representation of nonmetallic base of the invention.
Figure 19 is the third structural representation of heating wire of the present invention.
In figure：Shell 1, bimetal leaf 2, pad 3, movable contact 41, stationary contact 42, insulating part 5, heating wire 6, inserted sheet 7 is quiet
Pin 8, nonmetallic base 9, shell output end 11, shell knuckle 1, shell knuckle 2 122, round boss 13, rectangle is convex
Platform 14, outer casing groove 15, bimetal leaf connection end 1, bimetal leaf connection end 2 22, baffle plate 1, baffle plate 2 52, knuckle
One 53, knuckle 2 54, die cavity 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 stage casing 713, the quiet fat point 81 of pin, quiet pin
First claw 82, quiet the second claw of pin 83, quiet pin protrusion 1, quiet pin groove 1, quiet pin groove 2 86, quiet pin protrusion two
87, quiet pin groove 3 88, detent 1, detent 2 92, detent 3 93, detent 4 94 closes step
One 95, step 2 96 is closed, step 3 97 is closed, step 4 98, heating wire die cavity 99, inserted sheet die cavity 910, quiet foot type chamber is closed
911, the first positioning boss 912, the second positioning boss 913, the 3rd positioning boss 914, the 4th positioning boss 915, the 5th positioning
Boss 916, casing assembly 101, base assembly 102, heating wire component 103, heating wire loads die cavity boss 9111.
Embodiment
Highly preferred embodiment of the present invention is elaborated below in conjunction with the accompanying drawings.
Referring to Fig. 1~Figure 15, Miniature heat protector of the invention include shell 1, bimetal leaf 2, pad 3, movable contact 41,
Stationary contact 42, insulating part 5, heating wire 6, inserted sheet 7, quiet pin 8, nonmetallic base 9.
It is provided with shell 1 on rectangle boss 14, rectangle boss 14 and is provided with round boss 13, one group of one, band is moved
The bimetal leaf 2 of contact 41 is reliably connected by pad 3 and round boss 13, constitutes casing assembly 101, and cause weld strength
It is better.
Shell 1, which is provided with shell output end 11, shell 1, is also directly connected with two aduncate shell knuckles 1,
Shell knuckle 2 122, they are fastened with nonmetallic base 9, are connected in order to which base assembly 102 is matched, 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 connection end 1, bimetal leaf connection end 2 22 are provided with bimetal leaf 2, pad 3 is welded on double
On sheet metal connection end 1, movable contact 41 is welded on bimetal leaf connection end 2 22.
One stationary contact 42 of connection on inserted sheet 7, quiet pin 8 and heating wire 6, quiet pin 8, heating are installed in nonmetallic base 9
The two ends of silk 6 are connected with inserted sheet 7 and quiet pin 8 respectively；Closing step 1, closing step two are provided with around nonmetallic base 9
96th, closing step 3 97, closing step 4 98；It is nonmetallic to ensure that nonmetallic base 9 and inserted sheet 7, quiet pin 8 are reliably connected
The surrounding of base 9 is provided with four detents i.e. detent 1, detent 2 92, detent 3 93, detent
4 94；After inserted sheet 7, quiet pin 8 and nonmetallic base 9 with heating wire 6 are connected, base assembly 102 is constituted；H is electric insulation
Gap.
Nonmetallic base 9 is quadrangle, and the inserted sheet die cavity 910 for installing inserted sheet 7, the quiet pin for installing quiet pin 8 are provided with it
Die cavity 911 and the heating wire die cavity 99 for installing heating wire 6；Heating wire die cavity 99 is located at centre, inserted sheet die cavity 910 and quiet foot type chamber
911 are located at both sides；Close in step 1, closing step 2 96, closing step 3 97, closing step 4 98 at least two
Portion's step, that is, close step 3 97 and closing step 4 98, and they are located on the middle part inward position on the long side of quadrangle, position recessed
Groove 1, detent 2 92, detent 3 93, detent 4 94 are arranged on the long side of quadrangle, the quadrangle
Long side on be additionally provided with the first positioning boss 912, the second positioning boss 913, the 3rd positioning boss 914, the 4th positioning boss
915th, the 5th positioning boss 916；So that inserted sheet 7, quiet pin 8 and nonmetallic base 9 all around position more reliable, safety after connecting
Property is higher.In the present embodiment, heating wire 6 presses close to nonmetallic base 9 all without there is short-circuit risks.
Heating wire die cavity 99 coincide substantially in circular arc type, and the shape of heating wire 6 so that the sizing position of heating wire 6 is more accurate
Really, technical parameter is more stable.
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 are provided with inserted sheet 7, is inserted
The fat point 74 of piece is located at the both sides in inserted sheet stage casing 713, the fat point 74 of inserted sheet and heating wire first end 61 with inserted sheet output end 71 respectively
Welding, the first claw of inserted sheet 72 and the second claw of inserted sheet 73 are located on inserted sheet stage casing 713 and their both 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,
Inserted sheet protrudes 2 79 side to lay heating wire 6, that is, has the side of heating wire first end 61.
The fat point 81 of quiet pin, the first claw of quiet pin 82, the second claw of quiet pin 83, the quiet fat point 81 of pin and hair are provided with quiet pin 8
Heated filament the second end 62 is welded, and the side of quiet the first claw of pin 82 and the second claw of quiet pin 83 is respectively equipped with the quiet He of pin groove 1
Quiet pin groove 2 86, wherein quiet pin groove 1 sets up the first quiet pin claw 82 with the fat point 81 of quiet pin, quiet pin protrusion 1 separately
Its both sides, quiet pin groove 2 86 sets up quiet the second claw of pin 83 and quiet pin protrusion 2 87 in its both sides separately；In quiet pin groove 3 88
Opposite side to lay heating wire 6, that is, have the side of heating wire the second end 62.
The connection of heating wire 6 and the fat point 74 of inserted sheet, the fat point 81 of quiet pin is fixed using cross spot welding so that and heating wire 6
Welding it is more solid and reliable；The heating wire die cavity 99 of heating wire 6 helically in type, and nonmetallic base 9 coincide, and heating wire 6 leads to
Heat storage capacity is stronger when electric so that thermal protector is to obtain longer resetting time.
Heating wire component 103 loads nonmetallic base 9, and the first claw of inserted sheet 72, the second claw of inserted sheet 73 of inserted sheet 7 are distinguished
Detent 1 with nonmetallic base 9, the correspondence of detent 2 92 are connected, the first claw of quiet pin 82 of quiet pin 8, quiet pin the
Detent 3 93, the detent 4 94 of two claws 83 respectively with nonmetallic base 9 are corresponding to be connected.
Insulating part 5 is made of exotic material, and the both sides of 5 intermediate cavity of insulating part 55 are provided with the baffle plate one of diagonally opposing corner
51, baffle plate 2 52, be to 6 liang of output ends of heating wire heating wire first end 61, heating wire the second end 62 positioning insulation use,
Increase electrical strength；Knuckle 1, knuckle 2 54 are additionally provided with insulating part 5, they are symmetrical arranged and curved inwardly, so as to
The supporting connection of base assembly 102.In the present embodiment, insulating part 5 is a soft plastic sheet, and it is served as a contrast in shell 1 and non-metal bottom
Between seat 9, after shell 1 and nonmetallic 9 riveted of base, 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 reasonable, installing easier, security, higher, service life is longer, and its sealing property is preferably, hot in addition
Protector has explosion prevention function.
After nonmetallic base 9, shell 1, insulating part 5 are assembled, movable contact 41, stationary contact 42 are contacted, and composition is powered back
Road, after special mechanical device fine setting, technical parameter reaches setting；Shell output end 11 and inserted sheet output end 71 are in Tongfang
To setting, install and connect more convenient, preferably, thermal protector has explosion prevention function to sealing property.
Referring to Fig. 1-Figure 16, the assembly method of above-mentioned Miniature heat protector is carried out according to the following steps：
1st, bimetal leaf 2 is welded with movable contact 41, forms weldment one, and shell 1 is welded with pad 3, form weldment
Two, then above-mentioned weldment one and welding two are welded, casing assembly 101 is formed；
2nd, quiet pin 8 and stationary contact 42 are welded, forms weldment three, and again with welding three welderings after heating wire 6 and inserted sheet 7 are welded
Connect, form heating wire component 103, then above-mentioned heating wire component 103 correspondence is installed to the inserted sheet die cavity of nonmetallic base 9
910th, quiet foot type chamber 911, in heating wire die cavity 99, and riveted with nonmetallic base 9, form base assembly 102.
3rd, after base assembly 102 completes assembling, the energization trimming of heating wire 6 is carried out.
4th, insulating part 5 is arranged between above-mentioned casing assembly 101 and base assembly 102, assembling is finished, now, generated heat
Silk 6 will not produce thermal deformation when running into instantaneous large-current because expansion is powered.
In the present embodiment, when base assembly 102 is assembled, heating wire 6 is welded with quiet pin 8 again after being welded with inserted sheet 7, is being incited somebody to action
When heating wire component 103 loads nonmetallic base 9, the first claw of inserted sheet 72 of the inserted sheet 7, the second claw of inserted sheet 73 respectively with
Two detents in nonmetallic base 9 are that detent 1, the correspondence of detent 2 92 are riveted, the quiet pin of quiet pin 8 the
One claw 82, the second claw of quiet pin 83 are detent 1 with two other detent in nonmetallic base 9 respectively, determined
The position correspondence of groove 2 92 is riveted.
When insulating part 5 is located between casing assembly 101 and base assembly 102, the heating wire first end of heating wire 6
61st, heating wire the second end 62 is respectively aligned to two baffle plates i.e. baffle plate 1, baffle plate 2 52 higher than the upper surface of insulating part 5.
In heating wire 6 after energization trimming, the sizing flatness of heating wire 6 and the sizing height of heating wire 6 are carried out
Detection, detection is carried out using laser testing head noncontacting measurement method.The heating wire is shaped flatness and heating wire sizing height
Detection method is separately applied for a patent, is no longer described in detail.
Insulating part 5 is knuckle 1, knuckle 2 54 and the clamping of base assembly 102 by insulating part knuckle, then shell group
Part 101 is riveted by shell knuckle 1, shell knuckle 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
Heating wire is provided with seat 90 and loads die cavity 911, heating wire loads in die cavity 911 and is provided with heating wire positioning boss 9111, with
Ensure that the positioning of heating wire 6 is used, it is ensured that the uniformity of technical parameter；Remaining structure in the present embodiment it is same as Example 1 or
It is equivalent, no longer describe.
Referring to Fig. 9, in the present embodiment, heating wire 6 is band plate armature, matched nonmetallic base and figure
Identical in 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
Degree size is not more than 10mm thermal protector.
" Curved heating wire " as described herein refers to：The shape of the heating wire can be that helical buckling shape or plane are continuous
Curved etc., such as wire spiral type, wire rod are plate, and band is plate etc..
By foregoing description, those skilled in the art can implement.
Above content described in this specification is only to structure example explanation of the present invention；Moreover, the present invention zero
The title that part is taken can also be different, done equivalent of all construction, feature and principles according to described in inventional idea of the present invention or
In simple change, the protection domain for being included in patent of the present invention.
Claims (5)
1. a kind of assembly method of Miniature heat protector, the Miniature heat protector include shell, bimetal leaf, pad, movable contact,
Stationary contact, insulating part and the Curved heating wire with both ends, it is characterised in that：It is additionally provided with
Inserted sheet, is fixed with the fat point of inserted sheet, inserted sheet output end and the inwardly curved and claw of inserted sheet first that corresponds to each other and inserts thereon
The claw of piece second, the fat point of described inserted sheet is located at the both sides in inserted sheet stage casing, the fat point of inserted sheet and the hair with inserted sheet output end respectively
Heated filament first end is welded, and the described claw of inserted sheet first and the claw of inserted sheet second are located on inserted sheet stage casing and their both sides point
She You not inserted sheet groove；
Quiet pin, is fixed with the fat point of quiet pin and the claw of quiet pin first and the claw of quiet pin second inwardly curved and correspond to each other thereon,
The fat point of described quiet pin is welded with heating wire the second end, the described claw of quiet pin first and the side difference of the claw of quiet pin second
Provided with quiet pin groove, one of them quiet pin groove sets up one of them quiet pin claw and the fat point of quiet pin in its both sides separately；
Nonmetallic base, it is quadrangle, is provided with inserted sheet die cavity, the quiet pin matched with inserted sheet, quiet pin and heating wire
Die cavity, heating wire die cavity, they are realized by four closing steps and four detents, during described heating wire die cavity is located at
Between, inserted sheet die cavity and quiet foot type chamber are located at least two middle benches in both sides, four closing steps, and they are located at four
On middle part inward position in Xing Chang, four detents are arranged on the long side of quadrangle；
The assembly method of above-mentioned Miniature heat protector is carried out according to the following steps：
Described bimetal leaf and movable contact are welded, weldment one is formed, and shell is welded with pad, weldment is formed
Two, then above-mentioned weldment one and welding two are welded, casing assembly is formed；
Described quiet pin and stationary contact are spot welded, weldment three is formed, and will be welded again with welding three after heating wire and inserted sheet welding
Connect, form heating wire component, above-mentioned heating wire component correspondence is then installed to the inserted sheet die cavity of nonmetallic base, quiet foot type
In chamber, heating wire die cavity, and riveted with nonmetallic base, form base assembly；
After described base assembly completes assembling, heating wire energization trimming is carried out；
Described insulating part is arranged between above-mentioned casing assembly and base assembly, assembling is finished, now, heating wire is running into
Thermal deformation will not be produced during instantaneous large-current because expansion is powered.
2. the assembly method of Miniature heat protector according to claim 1, it is characterised in that：Described base assembly assembling
When, welded again with quiet pin after the welding of heating wire and inserted sheet, when heating wire component is loaded into nonmetallic base, the inserted sheet is inserted
The claw of piece first, the claw of inserted sheet second respectively it is corresponding with two detents in nonmetallic base riveting, the quiet pin it is quiet
The riveting corresponding with two other detent in nonmetallic base respectively of the claw of pin first, the claw of quiet pin second.
3. the assembly method of Miniature heat protector according to claim 1 or 2, it is characterised in that：In described insulating part
Upper surface is provided with two baffle plates, when described insulating part is located between casing assembly and base assembly, the two ends of heating wire
Portion is respectively aligned to two baffle plates 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 described 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：Described insulating part leads to
Insulating part knuckle and base assembly clamping are crossed, then casing assembly is riveted by shell knuckle and base assembly again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20040041681A1 (en) * | 2002-08-27 | 2004-03-04 | Oh Yong Kyun | Overload protector with hermetically sealing structure |
| 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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| US5206622A (en) * | 1992-04-10 | 1993-04-27 | Texas Instruments Incorporated | Protector device with improved bimetal contact assembly and method of making |
| US20040041681A1 (en) * | 2002-08-27 | 2004-03-04 | Oh Yong Kyun | Overload protector with hermetically sealing structure |
| 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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| 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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| CN107275134B (en) | 2019-03-05 |
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