CN208796933U - A kind of thermal protector and electromagnetic clutch circuit - Google Patents

Abstract

The utility model relates to thermal protector technical field, a kind of thermal protector and electromagnetic clutch circuit are disclosed.Wherein, thermal protector includes: upper housing, thermoinduction part, actuating strut, guide way, electrode body, the first conducting wire and the second conducting wire；Thermoinduction part, actuating strut, guide way, electrode body are contained in the first accommodating chamber of upper housing；Actuating strut one end passes through guide way and abuts against with thermoinduction part；Electrode body is equipped with the first contact, the second contact and elastic component, and the first contact is set to elastic component, and the first contact and the second contact connect, and the first conducting wire is connect with the first contact, and the second conducting wire is connect with the second contact, and the actuating strut other end is opposite with elastic component；When thermoinduction part is heated, the deformation pushing action bar movement of thermoinduction part offsets with elastic component, and elastic component drives the movement of the first contact, disconnects the first contact with the second contact, so that the first conducting wire and the second wire break.By the above-mentioned means, the present embodiment can satisfy the simple demand of structure.

Description

A kind of thermal protector and electromagnetic clutch circuit

Technical field

The utility model relates to thermal protector technical fields, more particularly to a kind of thermal protector and electromagnetic clutch electricity Road.

Background technique

Automobile air conditioner electromagnetic clutch is a power transmission between automobile engine and automobile air conditioner compressor, Automobile air conditioner compressor is to be driven by automobile engine by electromagnetic clutch.Electromagnetic clutch generally by band wheel assembly, Coil assembly and driving these three parts of disc assembly composition.When air-conditioning switch is connected, electromagnetism that electric current passes through electromagnetic clutch Coil, electromagnetic coil generate electromagnetic attraction, make the drive disk of compressor in conjunction with belt pulley, the torque of engine is passed to pressure Contracting owner's axis, rotates compressor main shaft；When air-conditioning switch disconnects or compressor internal temperature overheats, the suction of electromagnetic coil It disappears, drive disk and belt pulley are detached under spring leaf effect, and compressor stops working.

In compressor of air conditioner in operating condition, fever caused by a variety of inevitable badness can be encountered, it is therefore desirable to Thermal protector is connected, overheat power-off protection is carried out.

The inventor of the utility model has found in the process of implementing the utility model: current thermal protector structure is multiple Miscellaneous, assembling difficulty is big.

Utility model content

The utility model embodiment mainly solving the technical problems that provide a kind of thermal protector and electromagnetic clutch circuit, Structure is simple.

In order to solve the above technical problems, the technical solution that the utility model embodiment uses is: providing a kind of heat guarantor Protect device, comprising: include: upper housing, thermoinduction part, actuating strut, guide way, electrode body, the first conducting wire and the second conducting wire；On described Shell is equipped with the first accommodating chamber, and the thermoinduction part, the actuating strut, the guide way, the electrode body are contained in described the One accommodating chamber；The thermoinduction part is set to one end of first accommodating chamber, and one end of the actuating strut passes through the guide way And it is abutted against with the thermoinduction part；The electrode body is equipped with the first contact, the second contact and elastic component, and first contact is set In the elastic component, first contact and second contact are connected, and first conducting wire and first contact connect It connects, second conducting wire is connect with second contact, and the other end of the actuating strut is opposite with the elastic component；When the heat When induction pieces are heated, the thermoinduction part deformation pushes the actuating strut to move to the direction close to the elastic component, so that institute It states actuating strut to offset with the elastic component, the elastic component drives first contact to transport to the direction far from second contact Dynamic, first contact is disconnected with second contact, so that first conducting wire and second wire break.

Wherein, the electrode body further includes electrode tip holder, the first contact shoe and the second contact shoe, and the electrode tip holder is equipped with second Accommodating chamber, the first mounting hole and the second mounting hole, second accommodating chamber is for accommodating first contact, second touching Point, the elastic component, first contact shoe and second contact shoe, first mounting hole, second mounting hole are opened One end set on the electrode tip holder far from the guide way, the other end of the actuating strut protrude into second accommodating chamber；It is described One end of first contact shoe is connect with the elastic component, and the other end of first contact shoe passes through first mounting hole and institute The connection of the first conducting wire is stated, one end of second contact shoe is connect with second contact, the other end of second contact shoe It is connect across second mounting hole with second conducting wire, so that first conducting wire is connect with first contact, it is described Second conducting wire is connect with second contact.

Wherein, first contact shoe is equipped with the first protrusion, and first protrusion is used for and first mounting hole It offsets, so that first contact shoe is fixed on first mounting hole；Second contact shoe is equipped with the second protrusion, described Second protrusion with second mounting hole for offseting, so that second contact shoe is fixed on second mounting hole.

Wherein, the guide way includes the first circular slab, the second circular slab and rotary table portion, and second circular slab is set to institute It states between the first circular slab and the rotary table portion, the basal diameter of second circular slab is less than the bottom surface of first circular slab Diameter, the basal diameter of second circular slab are greater than the bottom surface diameter in the rotary table portion；The guide way is additionally provided with through-hole, The through-hole is through the center of first circular slab, second circular slab and the rotary table portion, one end of the actuating strut It is abutted against across the through-hole and the thermoinduction part.

Wherein, first circular slab and second circular slab form annular groove；The electrode tip holder is equipped with clamping portion, The clamping portion is set to the electrode tip holder close to one end of the guide way, the shape of the clamping portion and the annular groove Shape matches, and the clamping portion and the annular groove abut against, so that the electrode tip holder offsets with the described first round platform It connects.

Wherein, the thermal protector further includes the first wire-protecting set and the second wire-protecting set, and first conducting wire is protected Sheath is sheathed on first conducting wire, and the second wire-protecting set is sheathed on second conducting wire.

Wherein, the thermoinduction part is bimetal leaf.

Wherein, first contact is stationary contact, and first contact shoe is breakback contact stand, and second contact is dynamic touching Point, second contact shoe are movable contact seat；Alternatively, first contact is movable contact, first contact shoe is movable contact Seat, second contact are stationary contact, and second contact shoe is breakback contact stand.

Wherein, one end of first conducting wire is connect with first contact, and the other end of first conducting wire, which is equipped with, leads Line exposed end, the conducting wire exposed end with the lead-out wire of the electromagnetic clutch for being crimped.

Wherein, first conducting wire include the first sub-conductor, the second sub-conductor and metal tube, the one of first sub-conductor End is connect with first contact, the other end of first sub-conductor, one end of second sub-conductor and the metal tube Crimping connection, the other end of second sub-conductor with the electromagnetic clutch for being attached.

Wherein, first sub-conductor is equipped with the first exposed end, and first exposed end is set to first sub-conductor The other end, second sub-conductor are equipped with the second exposed end, and second exposed end is set to one end of second sub-conductor, institute State the first exposed end, second exposed end is contained in the metal tube.

Wherein, first conducting wire further includes heat-shrinkable T bush, and the heat-shrinkable T bush is sheathed on the metal tube, also, institute Stating heat-shrinkable T bush can be mobile relative to the metal tube, first sub-conductor, second sub-conductor.

In order to solve the above technical problems, the technical solution that the utility model embodiment uses is: providing a kind of electromagnetism Clutch circuit, including electromagnetic clutch and thermal protector as described above, the first conducting wire and the electricity of the thermal protector Magnet clutch connection, the second conducting wire of the thermal protector is for connecting positive pole, and the electromagnetic clutch is for connecting electricity Source cathode.

Wherein, one end that first conducting wire is connect with the electromagnetic clutch be equipped with conducting wire bare terminal end, the electromagnetism from One end that clutch is connect with the thermal protector is equipped with lead-out wire, and the lead-out wire, which is equipped with, draws bare terminal end, the conducting wire bare wire End carries out crimping with the extraction bare terminal end and connects.

The beneficial effect of the utility model embodiment is: being in contrast to the prior art, the utility model embodiment is logical Setting upper housing, thermoinduction part, actuating strut, guide way, electrode body, the first conducting wire and the second conducting wire are crossed, upper housing is equipped with first Accommodating chamber, thermoinduction part, actuating strut, guide way, electrode body are contained in the first accommodating chamber, and thermoinduction part is set to first receiving One end of chamber, one end of actuating strut pass through guide way and abut against with thermoinduction part, and electrode body is equipped with the first contact, the second contact And elastic component, the first contact are set to elastic component, the first contact and the second contact connect, and the first conducting wire and the first contact connect It connects, the second conducting wire is connect with the second contact, and the other end of actuating strut is opposite with elastic component, and compact-sized, simple, assembling is easy.

Detailed description of the invention

One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove Non- to have special statement, composition does not limit the figure in attached drawing.

Fig. 1 is the structural schematic diagram of thermal protector provided by the embodiment of the utility model；

Fig. 2 is the schematic diagram of the section structure of the thermal protector of Fig. 1；

Fig. 3 is the first contact, the first contact shoe, the second contact, the second contact shoe and the elastic component of the thermal protector of Fig. 1 Structural schematic diagram；

Fig. 4 is the first contact, the first contact shoe, the second contact, the second contact shoe and the elastic component of the thermal protector of Fig. 1 Structural schematic diagram；

Fig. 5 is one of structural schematic diagram of the first conducting wire of the thermal protector of Fig. 1；

Fig. 6 is another structural schematic diagram of the first conducting wire of the thermal protector of Fig. 1；

Fig. 7 is the structural schematic diagram of the second conducting wire of the thermal protector of Fig. 1；

Fig. 8 is the structural schematic diagram of the utility model electromagnetic clutch circuit that wherein an embodiment provides；

Fig. 9 is the structural schematic diagram of the electromagnetic clutch of Fig. 8；

Figure 10 is the structural schematic diagram for the electromagnetic clutch circuit that another embodiment of the utility model provides.

Specific embodiment

For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed Thin explanation.It should be noted that it can be directly in another element when element is expressed " being fixed on " another element Upper or placed in the middle there may be one or more therebetween elements.When an element is expressed " connection " another element, it can To be directly to another element or elements placed in the middle there may be one or more therebetween.

Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model The normally understood meaning of the technical staff in art field is identical.Art used in the description of the utility model in this specification Language, which is only for the purpose of describing specific embodiments, is not intended to limitation the utility model.

Fig. 1 is the structural schematic diagram of thermal protector provided by the embodiment of the utility model.As shown in Fig. 1, thermal protector 100 include upper housing 11, epoxy glue portion 12, thermoinduction part 20, actuating strut 30, guide way 40, electrode body 50,60 and of the first conducting wire Second conducting wire 70.

Also referring to Fig. 1 to Fig. 2, the substantially cylindrical shape of upper housing 11 is equipped with the first accommodating chamber 111 and accepting hole 112, accepting hole 112 is opened in a bottom surface of upper housing 11, and is connected to the first accommodating chamber 111.Thermoinduction part 20, actuating strut 30, guide way 40, electrode body 50 are contained in the first accommodating chamber 111.

Epoxy glue portion 12 is set at accepting hole 112, and is passed through for the first conducting wire 60 and the second conducting wire 60, so that first leads Line 60 and the second conducting wire 60 are connect with external circuit.Specifically, epoxy glue portion 12 is set at accepting hole 112 by filling.

Thermoinduction part 20 is set to one end of the first accommodating chamber 111, and one end of actuating strut 30 passes through guide way 40 and heat Induction pieces 20 abut against.Wherein, thermoinduction part 20 can be bimetal leaf.Bimetal leaf by two or more thermal expansion coefficients not Same metal composite forms, and by machine-shaping, when temperature rises to setting value, bimetal leaf can occur kick overturning, work as temperature Degree is restored to setting value, and bimetal leaf restores to the original state.The present embodiment is by using bimetal leaf, to the high sensitivity of temperature, control Temp effect is reliable.Certainly, in some other embodiments, which can also be temperature sensitive using other and can realize The material of deformation and recovery is generated according to temperature change.

Actuating strut 30 is cylindrical shape, and one end and the thermoinduction part 20 of actuating strut 30 offset, the other end of actuating strut 30 It is opposite with electrode body 50.

Guide way 40 includes the first circular slab 41, the second circular slab 42 and rotary table portion 43.The second circular slab 42 of institute is set to the Between one circular slab 41 and rotary table portion 43, the side of the first circular slab 41 and thermoinduction part 20 are opposite, the first circular slab 41 it is another Side is connect with the side of the second circular slab 42, and the other side of the second circular slab 42 is connect with the bottom surface in rotary table portion 43, rotary table The upper bottom surface and electrode tip holder 50 in portion 43 are opposite.Also, the basal diameter of the second circular slab 42 is less than the bottom surface of the first circular slab 41 Diameter, so that the first circular slab 41 and the second circular slab 42 form annular groove (not indicating), the bottom surface of the second circular slab 42 is straight Diameter is greater than the bottom surface diameter in rotary table portion 43.Guide way 40 is additionally provided with through-hole 401, and through-hole 401 runs through the first circular slab 41, second The center of circular slab 42 and rotary table portion 43, one end of actuating strut 30 pass through through-hole 401 and abut against with thermoinduction part 20.

Also referring to Fig. 3 to Fig. 4, electrode body 50 includes the first contact 511, the second contact 521 and elastic component 53.The One contact 511 is set to elastic component 53, and the first contact 511 and the second contact 521 connect, the first conducting wire 60 and the first contact 511 connections, the second conducting wire 70 are connect with the second contact 521, and the other end and elastic component 53 of actuating strut 20 are opposite.Work as thermoinduction When part 20 is heated, thermoinduction part 20 jumps deformation pushing action bar 30 and moves to the direction close to elastic component 53, so that actuating strut 20 offset with elastic component 53, and elastic component 53 drives first contact 511 to move to the direction far from the second contact 521, and first Contact 511 is disconnected with the second contact 521, so that 70 open circuit of the first conducting wire 60 and the second conducting wire；When temperature be restored to it is default Value, thermoinduction part 20 restore to the original state, and actuating strut 20 is driven to move to the direction far from elastic component 53, and elastic component 53 restores to the original state, First contact 511 is contacted with the second contact 521, so that the first conducting wire 60 is connected to the second conducting wire 70.

Specifically, electrode body 50 further includes the first contact shoe 51, the second contact shoe 52 and electrode tip holder 54.

Wherein, the substantially cylindrical shape of electrode tip holder 54, electrode tip holder 54 are equipped with the second accommodating chamber 541, the first mounting hole 542 and second mounting hole 543.Second accommodating chamber 541 is for accommodating the first contact 511, the second contact 521, elastic component 53, first Contact shoe 51 and the second contact shoe 52.First mounting hole 542, the second mounting hole 543 are opened in the same face of electrode tip holder 54, position In the one end of electrode tip holder 54 far from guide way 40, the other end of actuating strut 30 protrudes into the second accommodating chamber 541.

Optionally, referring again to Fig. 2, electrode tip holder 54 is additionally provided with clamping portion 544.The protrusion of clamping portion 544 is set to electrode tip holder 54 Close to one end of guide way 40, the annular groove of the shape of clamping portion 544 and the first circular slab 41 and the formation of the second circular slab 42 Shape match, also, clamping portion 544 and annular groove abut against so that electrode tip holder 54 is abutted against with the first circular slab 41, The second accommodating chamber 541 is set as to make guide way 40 and electrode tip holder 64 enclose.

Wherein, the first contact shoe 51 includes elastic component connector 512, the first wire connector 513 and the first protrusion 514.Elastic component connector 512 is vertically arranged with the first wire connector 513, one end of elastic component connector 512 and elastic component 53 connections, the other end of elastic component connector 512 are connect with one end of the first wire connector 513, the first wire connector 513 other end passes through the first mounting hole 542 and connect with the first conducting wire 60.First protrusion 514 be semicircle ball shape, first Protrusion 514 is set to the first wire connector 513, and the first protrusion 514 is used to offset with the inner wall of the first mounting hole 542, with Increase the pressure between the first wire connector 513 and the first mounting hole 542, so that the first contact shoe 51 be made to be fixed on first Mounting hole 542.

Wherein, the second contact shoe 52 includes contact connector 522, the second wire connector 523 and the second protrusion 524. One end of contact connector 522 is connect with the second contact 521, the other end of contact connector 522 and the second wire connector 523 One end connection, the other end of the second wire connector 523 connect with the second conducting wire 70.Second protrusion 524 is that semicircle is spherical Shape, the second protrusion 524 are set to the second wire connector 523, and the second protrusion 524 is for the inner wall with the second mounting hole 543 It offsets, to increase the pressure between the second wire connector 523 and the second mounting hole 543, to keep the second contact shoe 52 fixed In the second mounting hole 543.

Wherein, the first wire connector 513 is identical with 523 shape of the second wire connector, and is symmetrical arranged.

It is understood that the first protrusion 514 and the second protrusion 524 can be omitted in some other embodiments, The first contact shoe 51, the second contact shoe 52 can be made to be fixed on electrode tip holder 54 by being coated with the modes such as glue.

Wherein, elastic component 53 is prepared for elastic material, and when being under pressure, elastic component 53 is easy to happen deformation.Bullet Property part 53 include contact portion 531, interconnecting piece 532 and third protrusion 533.Contact portion 531 is generally rectangular, the first contact 511 are set to one end of contact portion 531, also, the first contact 511 and the second contact 521 on contact connector 522 It sets opposite and connects.The other end of contact portion 531 is connect with the middle part of interconnecting piece 532, and contact portion 531 and interconnecting piece 532 is vertical.Interconnecting piece 532 is elongate in shape, and interconnecting piece 532 is used to pass through with the elastic component connector 513 of the first contact shoe 51 Clamping is fixedly connected.Third protrusion 533 is semicircle ball shape, and third protrusion 533 is set to contact portion 531 close to movement The side of bar 30, actuating strut 30 and third protrusion 533 are opposite, and third protrusion 533 is for increasing actuating strut 30 to elastic component 53 pressure, to increase actuating strut 30 to the active force of elastic component 53.

Wherein, the first contact 511, the second contact 521 use silver alloy.

It should be noted that the first contact 511 is movable contact, the first contact shoe 51 is movable contact seat, and the second contact 521 is Stationary contact, the second contact shoe 52 are breakback contact stand.

In the present embodiment, the first contact 511 is connected by elastic component 53, the first contact shoe 51 and the first conducting wire 60, the Two contacts 521 are connected by the second contact shoe 52 and the second conducting wire 70.When the first contact 511 and the second contact 521 connect When, the first conducting wire 60 is connected to the second conducting wire 70；When the first contact 511 and the second contact 521 separate, the first conducting wire 60 and the Two conducting wires 70 disconnect.

It is understood that thermal protector 100 further includes O type circle 81 and snap ring 82 in some other embodiments.Card Ring 82 is set to electrode tip holder 54 close to one end of accepting hole 112, for making electrode tip holder 54 be fixed on the first accommodating chamber of upper housing 11 In 111.O-ring 81 is set between electrode tip holder 54 and snap ring 82, guard electrode seat 54 is used for, to disperse snap ring 82 to electrode tip holder 54 pressure.

Please refer to fig. 5, one end of the first conducting wire 60 passes through the first contact shoe 51, elastic component 53 and the first contact 511 Connection, the other end of the first conducting wire 60 are equipped with conducting wire exposed end 601, and conducting wire exposed end 601 can be by by the first conducting wire 60 Insulating layer strips to obtain.Conducting wire exposed end 61 with the lead-out wire of electromagnetic clutch for being crimped, to form exposed gold Belong to section.

Referring to Figure 6 together, the first conducting wire 60 includes the first sub-conductor 61, the second sub-conductor 62, metal tube 63 and pyrocondensation Casing 64.

Wherein, one end of the first sub-conductor 61 is connect by the first contact shoe 51, elastic component 53 with the first contact 511, the The other end of one sub-conductor 61 is equipped with the first exposed end 611, and the first exposed end 611 is contained in metal tube 63, the first sub-conductor 61 The other end crimped with the second sub-conductor 62 by the first exposed end 611.

Wherein, one end of the second sub-conductor 62 is equipped with the second exposed end 621, and the second exposed end 621 is contained in metal tube 63, the second sub-conductor 62 is crimped by the second exposed end 621 with the first sub-conductor 61.The other end of second sub-conductor 62 is used It is attached in electromagnetic clutch.Optionally, the other end of the second sub-conductor 62 is equipped with contact pin 622, and contact pin 622 is for being inserted into The shell of electromagnetic clutch, so that the second sub-conductor 62 is electrically connected with the coil of electromagnetic clutch.

Wherein, metal tube 63 can be prepared for conductive materials such as copper or tin, and it is naked that metal tube 63 is closely sheathed on first Reveal end 611 and the second exposed end 621, metal tube 63 is for making the first sub-conductor 61, the second sub-conductor 62 carry out crimping connection.

Wherein, heat-shrinkable T bush 64 is prepared for insulating materials, and heat-shrinkable T bush 64 is sheathed on metal tube 63.Optionally, hot The length of Heat-Shrinkable Tubings 64 is greater than the length of metal tube 63, so that the first exposed end 611, the second exposed end 621, metal tube 63 are complete It is contained in heat-shrinkable T bush 64.The internal diameter of heat-shrinkable T bush 64 is slightly larger than metal tube 63, the first sub-conductor 61, second sub-conductor 62 Outer diameter, so that heat-shrinkable T bush 64 can opposing metallic pipe 63, the first sub-conductor 61, the movement of the second sub-conductor 62.By the way that pyrocondensation is arranged Casing 64, to dustproof and waterproof is carried out at crimping, heat-shrinkable T bush 64 is shunk, and avoids the first exposed end 611, the second exposed end 621 naked Dew causes the danger of electric leakage in air.

It is understood that heat-shrinkable T bush 64 can be omitted in some other embodiments, it can be by metal tube 63 Welding insulation colloid layer carries out insulation protection.

Referring to Figure 7 together, one end of the second conducting wire 70 is equipped with connector 71, and connector 71 is for being plugged on power supply just On extremely, thus the electromagnetic clutch forming circuit being connect with the first conducting wire 60.

It is understood that thermal protector further includes the first wire-protecting set 65 and second in some other embodiments Wire-protecting set 75.First wire-protecting set 65 is sheathed on first conducting wire 60, and the second wire-protecting set 75 is sheathed on second Conducting wire 70, also, the first wire-protecting set 65 can be led with respect to 60 activity of the first conducting wire, the second wire-protecting set 75 with respect to second 70 activity of line.

In the present embodiment, the process for assembling thermal protector 100 can be substantially are as follows: passes through one end of actuating strut 30 and leads It abuts against and fixes to the through-hole 401 of body 40, and with thermoinduction part 20, thermoinduction part 20, guide way 40, actuating strut 30 are placed Into the first accommodating chamber 111 of upper housing 11；Then electrode body 50 is installed, the first contact 511 is installed in the company of elastic component 53 The elastic component connector 513 of first contact shoe 51 is fixedly connected by socket part 532 with the interconnecting piece 532 of elastic component 53, by the first touching First wire connector 513 of point seat 51 passes through the first mounting hole 542 of electrode tip holder 54, and the second contact 521 is installed in second On the contact connector 522 of contact shoe 52, the second wire connector 523 of the second contact shoe 52 is passed through the second of electrode tip holder 54 Mounting hole 543, and contact the first contact 511 with the second contact 521, then electrode body 50 is installed；Electrode body 50 is placed Enter the first accommodating chamber 111, and keeps the other end of actuating strut 30 and elastic component 53 opposite；O-ring 81, snap ring 82 are placed into respectively First accommodating chamber 111, and keep electrode tip holder 54 fixed；Make the first conducting wire 60, the second conducting wire 70 respectively with the first wire connector 513, the second wire connector 523 connects, and the first conducting wire 60, the second conducting wire 70 are pierced by from accepting hole 112 respectively, by epoxy Glue portion 12 is filled on accepting hole 112, to complete the assembling of thermal protector 100.

In the present embodiment, thermal protector 100 passes through setting upper housing 11, thermoinduction part 20, actuating strut 30, guide way 40, electrode body 50, the first conducting wire 60 and the second conducting wire 70, upper housing 11 are equipped with the first accommodating chamber 111, thermoinduction part 20, movement Bar 30, guide way 40, electrode body 50 are contained in the first accommodating chamber 111, and thermoinduction part 20 is set to first accommodating chamber 111 One end, one end of actuating strut 30 pass through guide way 40 and abut against with thermoinduction part 20, electrode body 50 be equipped with the first contact 511, Second contact 521 and elastic component 53, the first contact 511 are set to elastic component 53, the first contact 511 and 521 company of contact of the second contact Connect, the first conducting wire 60 is connect with the first contact 511, and the second conducting wire 70 is connect with the second contact 521, the other end of actuating strut 30 with Elastic component 53 is opposite, compact-sized, simple, and assembling is easy.

Since in actual application, thermal protector and electromagnetic clutch are usually to be connected in series, work as electromagnetic clutch It when production or failure, needs to test electromagnetic clutch, such as carries out turn-to-turn characteristic test.Wherein, turn-to-turn is special Property test be mainly used for testing the coil of electromagnetic clutch with the presence or absence of short trouble.The working principle of turn-to-turn characteristic test is main Are as follows: it between coil occurs for coil windings inside when short trouble, will form short-circuit circle, will significantly change the inductance of coil, electricity Hold and the parameters such as resistance；There is the turn-to-turn insulation weak spots for still having certain insulation degree for some coils, if without too High voltage goes to impact, and weak spot would not be breakdown, the inductance of coil windings, and the parameters such as resistance and capacitor are in usual situation Under apparent exception will not occur, when common test, such weak spot would not be found, only when test voltage is more than When the pressure voltage for the weak spot that insulate, it just will cause turn-to-turn insulation breakdown, generate spark discharge, with discharging sound and ozone etc., together When its inductance L, capacitor C and resistance R will substantially change, can correspondingly change the decaying of impact test pulse voltage in the windings Frequency of oscillation and rate of decay, generated curve and standard curve also just will appear biggish deviation so that be detected, from And detect the electromagnetic clutch there are failure.

When testing electromagnetic clutch, generally requiring will be between electromagnetic clutch and the negative pole end of thermal protector Conducting wire removes, but the conducting wire between electromagnetic clutch and thermal protector is often to be fixedly connected in practical applications, it is difficult to tear open It unloads；Alternatively, measurement circuit one end is connected electromagnetic clutch, the other end connects the positive terminal of thermal protector, but tests in this way Electric current, so that may generate arc spark between the sound contact of thermal protector, can be such that contact occurs not by thermal protector Reversible damage, causes thermal protector to be damaged.

Based on this, the utility model embodiment provides a kind of thermal protector and electromagnetic clutch protection circuit, can change The connection type of the test circuit of electromagnetic clutch, makes test circuit not be connected to thermal protector, so that thermal protector be avoided to be damaged It is bad.

Fig. 8 is the structural schematic diagram of the utility model electromagnetic clutch circuit that wherein an embodiment provides.Such as Fig. 8 institute Show, which includes electromagnetic clutch 210 and thermal protector 100.First conducting wire 60 of thermal protector 100 It is connect with electromagnetic clutch 210, for connecting positive pole, electromagnetic clutch 210 is used for the second conducting wire 70 of thermal protector 100 Connect power cathode.

Wherein, the structure of thermal protector 100 is identical as the structure of thermal protector 100 in above-described embodiment, herein no longer It repeats.

Also referring to Fig. 9, electromagnetic clutch 210 is equipped with ground terminal 213, and ground terminal 213 is for being grounded or even Connect 210 ontology of electromagnetic clutch using by electromagnetic clutch 210 as ground.

In the actual production process, electromagnetic clutch 210 can be set lead-out wire or be not provided with lead-out wire.When electromagnetism from When clutch 210 is equipped with lead-out wire 211 (as shown in Figure 8), lead-out wire 211 with thermal protector 100 for connecting.Lead-out wire 211 is set Have and draw bare terminal end 212, drawing bare terminal end 212 can be obtained by stripping the insulating layer of lead-out wire 211.Thermal protector 100 Structure is as shown in figure 5, one end of the first conducting wire 60 of thermal protector 100 is equipped with conducting wire bare terminal end 601.Draw bare terminal end 212 with Conducting wire bare terminal end 601 carries out crimping connection or welded connecting, test lead 220 is formed, to make electromagnetic clutch 210 and Thermal protection Device 100 connects.When testing electromagnetic clutch 210, the ground terminal of one end and electromagnetic clutch 210 of circuit will be tested Son 213 connects, and the other end for testing circuit is connect with test lead 220, makes to test circuit and electromagnetic clutch 210, lead-out wire 211, test lead 22 is formed into a loop, to make test circuit not be connected to thermal protector, so that thermal protector be avoided to be damaged.

When electromagnetic clutch 210 is not provided with lead-out wire 211 (as shown in Figure 10), electromagnetic clutch 210 by electromagnetism from Plug wire hole (not indicating) on 210 shell of clutch is attached with thermal protector 100.The structure of thermal protector 100 such as Fig. 6 institute Show, contact pin 622 is arranged in the second sub-conductor 62 of the first conducting wire 60 of thermal protector 100, and contact pin 622 is inserted into electromagnetic clutch shell On plug wire hole so that the second sub-conductor 62 is electrically connected with the coil of electromagnetic clutch, thus electromagnetic clutch 210 and Thermal protection Device 100 connects.When testing electromagnetic clutch 210, the ground terminal of one end and electromagnetic clutch 210 of circuit will be tested Son 213 connects, and the other end for testing circuit is connect with metal tube 63, leads test circuit with electromagnetic clutch 210, the second son Line 62, metal tube 63 are formed into a loop, to make test circuit not be connected to thermal protector, so that thermal protector be avoided to be damaged.

In the present embodiment, conducting wire exposed end 601 is set by the way that the first conducting wire 60 of thermal protector 100 is arranged in, alternatively, Make the first sub-conductor 61 of the first conducting wire 61 carry out crimping with the second sub-conductor 62 to connect, so that in electromagnetic clutch 210 and heat When testing electromagnetic clutch 210 in the concatenated electromagnetic clutch circuit 200 of protector 100, it is not necessarily to thermal protector 100 and electromagnetism Conducting wire between clutch 210 removes, and without making to test circuit through overheat protector 100, changes the survey of electromagnetic clutch The connection type for trying circuit makes test circuit not be connected to thermal protector, so that thermal protector be avoided to be damaged.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the application, rather than its limitations；At this It under the thinking of application, can also be combined between the technical characteristic in above embodiments or different embodiment, step can be with It is realized with random order, and there are many other variations of the different aspect of the application as described above, for simplicity, they do not have Have and is provided in details；Although the application is described in detail with reference to the foregoing embodiments, the ordinary skill people of this field Member is it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of skill Art feature is equivalently replaced；And these are modified or replaceed, each reality of the application that it does not separate the essence of the corresponding technical solution Apply the range of a technical solution.

Claims (14)

1. a kind of thermal protector characterized by comprising upper housing, thermoinduction part, actuating strut, guide way, electrode body, first Conducting wire and the second conducting wire；

The upper housing is equipped with the first accommodating chamber, and the thermoinduction part, the actuating strut, the guide way, the electrode body are received It is dissolved in first accommodating chamber；

The thermoinduction part is set to one end of first accommodating chamber, one end of the actuating strut pass through the guide way and with institute Thermoinduction part is stated to abut against；

The electrode body is equipped with the first contact, the second contact and elastic component, and first contact is set to the elastic component, and described the One contact and second contact connect, and first conducting wire is connect with first contact, second conducting wire and institute The connection of the second contact is stated, the other end of the actuating strut is opposite with the elastic component；

When the thermoinduction part is heated, the thermoinduction part deformation pushes the actuating strut to the direction close to the elastic component Movement, so that the actuating strut offsets with the elastic component, the elastic component drives first contact to far from described second The direction of contact moves, and first contact is disconnected with second contact, so that first conducting wire and described second Wire break.

2. thermal protector according to claim 1, which is characterized in that the electrode body further includes electrode tip holder, the first contact Seat and the second contact shoe,

The electrode tip holder is equipped with the second accommodating chamber, the first mounting hole and the second mounting hole, and second accommodating chamber is used for collecting post State the first contact, second contact, the elastic component, first contact shoe and second contact shoe, first peace Dress hole, second mounting hole are opened in the one end of the electrode tip holder far from the guide way, and the other end of the actuating strut is stretched Enter second accommodating chamber；

One end of first contact shoe is connect with the elastic component, and the other end of first contact shoe passes through first peace Dress hole is connect with first conducting wire, and one end of second contact shoe is connect with second contact, second contact shoe The other end pass through second mounting hole connect with second conducting wire so that first conducting wire and first contact company It connects, second conducting wire is connect with second contact.

3. thermal protector according to claim 2, which is characterized in that

First contact shoe is equipped with the first protrusion, and first protrusion is used to offset with first mounting hole, so that First contact shoe is fixed on first mounting hole；

Second contact shoe is equipped with the second protrusion, and second protrusion is used to offset with second mounting hole, so that Second contact shoe is fixed on second mounting hole.

4. thermal protector according to claim 2, which is characterized in that

The guide way includes the first circular slab, the second circular slab and rotary table portion, and second circular slab is set to first circle Between shape plate and the rotary table portion, the basal diameter of second circular slab is less than the basal diameter of first circular slab, institute The basal diameter for stating the second circular slab is greater than the bottom surface diameter in the rotary table portion；

The guide way is additionally provided with through-hole, and the through-hole runs through first circular slab, second circular slab and the rotary table The center in portion, one end of the actuating strut pass through the through-hole and abut against with the thermoinduction part.

5. thermal protector according to claim 4, which is characterized in that first circular slab and the second circular slab shape Cyclic connected in star；

The electrode tip holder is equipped with clamping portion, and the clamping portion is set to the electrode tip holder close to one end of the guide way, the card The shape of socket part and the shape of the annular groove match, and the clamping portion and the annular groove abut against, so that described Electrode tip holder is abutted against with the described first round platform.

6. thermal protector according to claim 1, which is characterized in that the thermal protector further includes the first wire-protecting set With the second wire-protecting set, the first wire-protecting set is sheathed on first conducting wire, and the second wire-protecting set is arranged In second conducting wire.

7. thermal protector according to claim 1-6, which is characterized in that the thermoinduction part is bimetal leaf.

8. according to the described in any item thermal protectors of claim 2-6, which is characterized in that

First contact is stationary contact, and first contact shoe is breakback contact stand, and second contact is movable contact, described the Two contact shoes are movable contact seat；Alternatively,

First contact is movable contact, and first contact shoe is movable contact seat, and second contact is stationary contact, described the Two contact shoes are breakback contact stand.

9. thermal protector according to claim 1-6, which is characterized in that

One end of first conducting wire is connect with first contact, and the other end of first conducting wire is equipped with conducting wire exposed end, The conducting wire exposed end with the lead-out wire of electromagnetic clutch for being crimped.

10. thermal protector according to claim 1-6, which is characterized in that

First conducting wire include the first sub-conductor, the second sub-conductor and metal tube, one end of first sub-conductor with it is described First contact connection, the other end of first sub-conductor, second sub-conductor one end crimp connection with the metal tube, The other end of second sub-conductor with electromagnetic clutch for being attached.

11. thermal protector according to claim 10, which is characterized in that first sub-conductor is equipped with the first exposed end, First exposed end is set to the other end of first sub-conductor, and second sub-conductor is equipped with the second exposed end, and described the Two exposed ends are set to one end of second sub-conductor, and first exposed end, second exposed end are contained in the metal Pipe.

12. thermal protector according to claim 10, which is characterized in that first conducting wire further includes heat-shrinkable T bush, institute State heat-shrinkable T bush and be sheathed on the metal tube, also, the heat-shrinkable T bush can the relatively described metal tube, first sub-conductor, Second sub-conductor is mobile.

13. a kind of electromagnetic clutch circuit, which is characterized in that described in any item including electromagnetic clutch and claim 1-12 First conducting wire of thermal protector, the thermal protector is connect with the electromagnetic clutch, and the second conducting wire of the thermal protector is used In connection positive pole, the electromagnetic clutch is for connecting power cathode.

14. electromagnetic clutch circuit according to claim 13, which is characterized in that first conducting wire and the electromagnetism from One end of clutch connection is equipped with conducting wire bare terminal end, and one end that the electromagnetic clutch is connect with the thermal protector, which is equipped with, draws Line, the lead-out wire, which is equipped with, draws bare terminal end, and the conducting wire bare terminal end carries out crimping with the extraction bare terminal end and connects.