CN104900454B - Thermal relay - Google Patents
Thermal relay Download PDFInfo
- Publication number
- CN104900454B CN104900454B CN201510255615.3A CN201510255615A CN104900454B CN 104900454 B CN104900454 B CN 104900454B CN 201510255615 A CN201510255615 A CN 201510255615A CN 104900454 B CN104900454 B CN 104900454B
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- CN
- China
- Prior art keywords
- housing
- thermorelay
- push rod
- clamping head
- leg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
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- Thermally Actuated Switches (AREA)
- Fire Alarms (AREA)
Abstract
The invention provides a thermal relay. Problems are solved that a test mechanism of a current thermal relay is achieved in a way of being driven by a test button and a spring and the structure of the test mechanism is complex. The thermal relay is characterized in that a test piece (21) comprises a first position and a second position; in the first position, when a thermal relay body is pushed leftwards, a push rod (22) is driven to rightwards push open a normally-closed moving contact (31) so as to trip a thermal relay body; and in the second position, when the thermal relay body returns affected by an elastic returning piece (15), the push rod (22) is away from the normally-closed moving contact (31) so as to allow the thermal relay body to be closed. The thermal relay comprises a housing body. An operation hole is arranged in the housing body. Via the operation hole, a rocker arm in a thermal relay actuating mechanism can be directly operated, and the rocker arm directly drives the push rod to drive the contact to be closed and opened. In this way, test operation can be achieved more directly; transmission of movement is simpler; a test button and a spring are saved; and the structure of the thermal relay is more compact.
Description
Technical field
The invention belongs to Low Voltage Electrical Apparatus, more particularly to a kind of thermorelay.
Background technology
Thermorelay is, come the protector of work, to be widely used in circuit or electrical equipment using the heat effect principle of electric current
The protection of the overload protection of (such as motor), the disconnected phase for being alternatively arranged as motor having and current imbalance operation.Thermorelay
The heater element of generation heat effect be serially connected with the circuit of electric equipment, with the overcurrent of direct induction apparatus equipment, and
The thermal induction element of sensing overcurrent typically adopts bimetal leaf.
Present thermorelay（Such as Publication No. " CN101656177A ", patent name is the Chinese patent of " thermorelay "）
Mechanism for testing be to go drive mechanism to realize by a testing button and spring, and structure is more complicated.
The content of the invention
In order to overcome the shortcomings of background technology, the present invention provides a kind of thermorelay, mainly solves present thermorelay
Mechanism for testing is to go drive mechanism to realize by a testing button and a spring, and the more complicated problem of structure.
The technical solution adopted in the present invention is：
A kind of thermorelay, including housing, are provided with thermoinduction mechanism, contact separating/closing mechanism, thermal walking biography in the housing
Mechanism and mechanism for testing are passed, the thermoinduction mechanism is connected by thermal walking transmission mechanism and contact separating/closing mechanism, the contact
Separating/closing mechanism includes mutual corresponding normally closed static contact and normally closed moving contact, and the mechanism for testing includes test block and push rod, institute
State and dynamic clamping head and quiet clamping head is provided between push pedal and the inner walls, operation is correspondingly provided with the test block top on the housing
Hole, and the inner walls are provided with support, the test block is movably connected on the support and bottom is linked with the push rod,
The test block includes being driven when promoting to the left the push rod to back down the normally closed moving contact makes that thermorelay threads off the to the right
One position and dynamic clamping head and quiet clamping head effect under reset when make the push rod away from the normally closed moving contact make thermorelay close
The second position.
The test block includes the first leg, the second leg and the 3rd leg that push pedal, push pedal bottom are provided with, the support
Upper both sides are equipped with V-shaped groove, and first leg and the second leg are pressed in the V-shaped groove, the 3rd leg and institute
State push rod linkage.
The push rod is provided with holding tank, the both sides side wall of the 3rd leg and the both sides inwall pair of the holding tank
Should, the push rod is provided with the slide block being slidably matched with housing, and the slide block is provided with corresponding convex with the normally closed moving contact
Rise.
Indicator board is also associated with the wall of the push pedal side, the housing is provided with observation panel corresponding with the indicator board.
Baffle plate is additionally provided with the push pedal, the baffle plate is corresponding with the inner left wall of the V-shaped groove.
The indicator board is provided with buckle, and the push pedal is provided with the spacing hole being engaged by clamping with the buckle.
The thermal walking transmission mechanism includes the connecting rod with the housing hinge, and the dynamic clamping head and quiet clamping head is located at the push pedal
Between the connecting rod.
The dynamic clamping head and quiet clamping head is spring.
The thermoinduction mechanism includes at least one pair of golden component, and double gold components are axially vertically arranged to the housing
Interior, the housing includes the side plate being detachably connected, and double gold components include bimetal leaf, the side plate and the bimetallic
Piece bottom correspondence, between the bimetal leaf two bottom sides and inner walls gap is provided with.
The connecting plate and the connection of bimetal leaf outside that double gold components are also connected with including the bimetal leaf is sent out
Thermal element, the housing bottom is provided with mounting seat, and the bimetal leaf is by the connecting plate and the mounting seat mode connects for screw；
Double gold component is provided with 3, is provided with dividing plate between each described double gold component bottom, the bimetal leaf both sides with it is described every
The gap is provided between plate and the mounting seat.
The invention has the beneficial effects as follows：The present invention provides a kind of thermorelay, including housing, and housing is provided with handle hole,
The rocking arm in thermorelay actuating mechanism can be directly manipulated by handle hole（That is test block）, then directly drive is pushed away rocking arm
Bar, drives the closed and disconnected of contact, such test operation more directly to realize that the transmission of motion is more succinct, saves
Testing button and spring, structure is compacter.
Description of the drawings
Fig. 1 is the front view of one embodiment of the invention.
Fig. 2 is the schematic internal view of one embodiment of the invention.
Fig. 3 is the inside schematic perspective view of one embodiment of the invention.
Fig. 4 is enlarged drawing at Fig. 3 A.
Fig. 5 is the test block of one embodiment of the invention and the schematic perspective view of indication piece.
Fig. 6 is local interior's schematic diagram of one embodiment of the invention.
Fig. 7 is the schematic perspective view of the push rod of one embodiment of the invention.
Fig. 8 is the exploded perspective view of one embodiment of the invention.
Fig. 9 is enlarged drawing at Fig. 8 B.
Figure 10 is the schematic perspective view of double gold components of one embodiment of the invention.
Figure 11 is the schematic perspective view of the push rod of one embodiment of the invention.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described：As illustrated, a kind of thermorelay, including housing 1, it is described
Thermoinduction mechanism, contact separating/closing mechanism, thermal walking transmission mechanism and mechanism for testing 2 are provided with housing 1, the thermoinduction mechanism leads to
Cross thermal walking transmission mechanism and the connection of contact separating/closing mechanism, the contact separating/closing mechanism include mutual corresponding normally closed static contact and
Normally closed moving contact 31, the mechanism for testing 2 includes test block 21 and push rod 22, between the push pedal 211 and the inwall of the housing 1
Dynamic clamping head and quiet clamping head 15 is provided with, is correspondingly provided with handle hole 11, and the housing 1 with the top of the test block 21 on the housing 1
Wall is provided with support 12, and the test block 21 is movably connected on the support 12 and bottom is linked with the push rod 22, the survey
Test specimen 21 includes being driven when promoting to the left the push rod 22 to back down the normally closed moving contact 31 makes that thermorelay threads off the to the right
One position and dynamic clamping head and quiet clamping head 15 act under reset when make the push rod 22 make thermorelay away from the normally closed moving contact 31
The second position of closure.When using, it is possible to use instrument or directly with finger in handle hole push to test part to the left, by testing
Between drive push rod push normally closed moving contact to the right, make thermorelay thread off, during reset, in the presence of dynamic clamping head and quiet clamping head reset,
The normally closed moving contact closure present invention is set to provide a kind of thermorelay, including housing, housing is provided with handle hole, can by handle hole
Rocking arm in directly to manipulate thermorelay actuating mechanism（That is test block）, then rocking arm directly drive push rod, drive contact
Closed and disconnected, such test operation more directly realizes that the transmission of motion is more succinct, saves testing button and bullet
Spring, structure is compacter.
A kind of actuating mechanism for being applied to thermal overload relay, it includes pedestal, and operating parts, operating parts, test block is pushed away
Bar, static contact, moving contact, spring, and connecting rod.Can directly be manipulated in thermorelay actuating mechanism by the handle hole on housing
Test block, then test block directly drive push rod, drive the closed and disconnected of contact, be so directly realized by test function, together
When drive indication piece indication mechanism state.
In the housing, it has a pedestal；Two stationary contacts；Two movable contacts；Push rod；Test block；Connecting rod；Spring；
SR, stop button, spring；It is characterized in that：Under normal circumstances the used drive link of product carrys out lead agency action；It is logical
Crossing manipulation test block can realize the action of mechanism, while being able to observe that the position shape of mechanism by the indication piece on test block
State；SR has two states, and state mechanism after mechanism action can automatically reset, and a state is in mechanism action
After need manipulation operations part mechanism to reset；The disconnection of normally closed interlock can be realized by manipulating stop button.
In the present invention, as illustrated, the test block 21 includes the first leg that push pedal 211, the bottom of push pedal 211 are provided with
212nd, the second leg 219 and the 3rd leg 213, both sides are equipped with V-shaped groove 121, the He of the first leg 212 on the support 12
Second leg 219 is pressed in the V-shaped groove 121, and the 3rd leg 213 links with the push rod 22.Here test block
The first leg V-shaped groove bottom swing, the form being hinged can also be made here, can choose according to the actual requirements.
In the present invention, as illustrated, the push rod 22 is provided with holding tank 221, the both sides side of the 3rd leg 213
Wall is corresponding with the both sides inwall of the holding tank 221, and the push rod 22 is provided with the slide block 221 being slidably matched with housing 1, described
Slide block 221 is provided with corresponding with the normally closed moving contact 31 raised 222.When push pedal is promoted to the left, the second leg is to the right
Swing and promote holding tank right side inwall and then drive push rod to promote to the right, when push pedal is promoted to the right, the second leg is to left swing
It is dynamic to promote holding tank inner left wall and then drive push rod to promote to the left.
In the present invention, as illustrated, being also associated with indicator board 214 on the side wall of the push pedal 211, set on the housing 1
There is observation panel 13 corresponding with the indicator board 214.The situation in thermorelay can be easily learnt, simple structure is used
It is convenient.
In the present invention, as illustrated, being additionally provided with baffle plate 215 in the push pedal 211, the baffle plate 215 and the V-shaped groove
121 inner left wall correspondence.Prevent test block manipulate test function when it is long be deep in product, damage product component.
In the present invention, as illustrated, the indicator board 214 is provided with buckle, the push pedal 211 is provided with and the card
The spacing hole that button is engaged by clamping.Here indication piece and buckle are using split-type structural and using the mounting means of clamping, assembling side
Just, using effect is good.
In the present invention, as illustrated, the thermal walking transmission mechanism includes the connecting rod 14 being hinged with the housing 1, institute
State dynamic clamping head and quiet clamping head 15 to be located between the push pedal 211 and the connecting rod 14.It is mounted opposite in inner walls, stroke is shorter, ties
Structure is compact, and using effect is good.
In the present invention, as illustrated, the dynamic clamping head and quiet clamping head 15 is spring.May be otherwise using other elastic resets
Part, such as rubber reinforcement, extension spring, spring is easy to obtain, and cost is relatively low, is preferred version.
In the present invention, as illustrated, the thermoinduction mechanism includes at least one pair of golden component, double gold component axles
To being vertically arranged in the housing 1, the housing 1 includes the side plate 17 being detachably connected, and double gold components include double gold
Category piece 41, the side plate 17 is corresponding with the bottom of the bimetal leaf 41, the two bottom sides of the bimetal leaf 41 and the inwall of housing 1 it
Between be provided with gap 42.Its pair of golden component it is vertical in housing, and housing bottom and double gold component bottom is corresponding sets
There is the side plate being detachably connected, when needing to adjust double gold, in that context it may be convenient to pull down side plate i.e. scalable, simple structure,
It is easy to manufacture, it is easy to use.
In the present invention, as illustrated, double gold components also include the connecting plate 43 that the bimetal leaf 41 is connected with
Connect heater element 44 with the outside of the bimetal leaf 41, the bottom of the housing 1 is provided with mounting seat 18, and the bimetal leaf 41 leads to
The connecting plate 43 is crossed with the mode connects for screw of the mounting seat 18；Double gold components are provided with 3, each described double gold component bottom
Between be provided with dividing plate 45, the gap is provided between the both sides of the bimetal leaf 41 and the dividing plate 45 and the mounting seat 18
42.Compact conformation, easy for installation, 3 groups of double gold components can be adjusted, and convenient, using effect is good.
Embodiment is not construed as limitation of the present invention, but any spiritual improvements introduced based on the present invention, all should be
Within protection scope of the present invention.
Claims (8)
1. a kind of thermorelay, including housing（1）, the housing（1）Inside it is provided with thermoinduction mechanism, contact separating/closing mechanism, thermal potential
Move transmission mechanism and mechanism for testing（2）, the thermoinduction mechanism is by thermal walking transmission mechanism and the connection of contact separating/closing mechanism, institute
Stating contact separating/closing mechanism includes mutual corresponding normally closed static contact and normally closed moving contact（31）, it is characterised in that：The test machine
Structure（2）Including test block（21）And push rod（22）, the test block（21）Including push pedal（211）, the push pedal（211）With it is described
Housing（1）Dynamic clamping head and quiet clamping head is provided between inwall（15）, the housing（1）On with the test block（21）Top is correspondingly provided with behaviour
Make hole（11）, and the housing（1）Inwall is provided with support（12）, the test block（21）It is movably connected on the support（12）On
And bottom and the push rod（22）Linkage, the test block（21）The push rod is driven including when promoting to the left（22）Back down to the right
The normally closed moving contact（31）Make the first position of thermorelay dropout and in dynamic clamping head and quiet clamping head（15）Institute is made when resetting under effect
State push rod（22）Away from the normally closed moving contact（31）The second position for closing thermorelay, the test block（21）Including pushing away
Plate（211）, the push pedal（211）Bottom is provided with the first leg（212）, the second leg（219）With the 3rd leg（213）, it is described
Support（12）Upper both sides are equipped with V-shaped groove（121）, first leg（212）With the second leg（219）It is pressed on the V
Shape groove（121）It is interior, the 3rd leg（213）With the push rod（22）Linkage, the thermoinduction mechanism includes at least one pair
Golden component, double gold components are axially vertically arranged to the housing（1）It is interior, the housing（1）Including the side being detachably connected
Plate（17）, double gold components are including bimetal leaf（41）, the side plate（17）With the bimetal leaf（41）Bottom correspondence, institute
State bimetal leaf（41）Two bottom sides and housing（1）Gap is provided between inwall（42）.
2. a kind of thermorelay according to claim 1, it is characterised in that：The push rod（22）It is provided with holding tank
（221）, the 3rd leg（213）Both sides side wall and the holding tank（221）Both sides inwalls correspondence, the push rod（22）
It is provided with and housing（1）The slide block being slidably matched（221）, the slide block（221）It is provided with and the normally closed moving contact（31）It is right
The projection answered（222）.
3. a kind of thermorelay according to claim 1, it is characterised in that：The push pedal（211）It is also associated with the wall of side
Indicator board（214）, the housing（1）It is provided with and the indicator board（214）Corresponding observation panel（13）.
4. a kind of thermorelay according to claim 1, it is characterised in that：The push pedal（211）On be additionally provided with baffle plate
（215）, the baffle plate（215）With the V-shaped groove（121）Inner left wall correspondence.
5. a kind of thermorelay according to claim 3, it is characterised in that：The indicator board（214）Buckle is provided with, institute
State push pedal（211）It is provided with the spacing hole being engaged by clamping with the buckle.
6. a kind of thermorelay according to claim 1, it is characterised in that：The thermal walking transmission mechanism include with it is described
Housing（1）The connecting rod being hinged（14）, the dynamic clamping head and quiet clamping head（15）Located at the push pedal（211）With the connecting rod（14）Between.
7. a kind of thermorelay according to claim 6, it is characterised in that：The dynamic clamping head and quiet clamping head（15）For spring.
8. a kind of thermorelay according to claim 1, it is characterised in that：Double gold components also include the bimetallic
Piece（41）On the connecting plate that is connected with（43）With the bimetal leaf（41）The heater element that outside is connected with（44）, the housing
（1）Bottom is provided with mounting seat（18）, the bimetal leaf（41）By the connecting plate（43）With the mounting seat（18）Screw
Connection；Double gold components are provided with 3, and between each described double gold component bottom dividing plate is provided with（45）, the bimetal leaf
（41）Both sides and the dividing plate（45）With the mounting seat（18）Between be provided with the gap（42）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510255615.3A CN104900454B (en) | 2015-05-19 | 2015-05-19 | Thermal relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510255615.3A CN104900454B (en) | 2015-05-19 | 2015-05-19 | Thermal relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104900454A CN104900454A (en) | 2015-09-09 |
| CN104900454B true CN104900454B (en) | 2017-04-12 |
Family
ID=54033059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510255615.3A Active CN104900454B (en) | 2015-05-19 | 2015-05-19 | Thermal relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104900454B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709457B (en) * | 2019-01-22 | 2023-12-12 | 苏州工业职业技术学院 | Insulation detection and thermal protector reset testing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8702467U1 (en) * | 1987-02-18 | 1987-04-02 | Brown, Boveri & Cie Ag, 6800 Mannheim, De | |
| CN104505314A (en) * | 2014-12-02 | 2015-04-08 | 浙江正泰电器股份有限公司 | Thermal relay temperature compensation structure |
| CN204668263U (en) * | 2015-05-19 | 2015-09-23 | 浙江天正电气股份有限公司 | A kind of thermal relay |
-
2015
- 2015-05-19 CN CN201510255615.3A patent/CN104900454B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8702467U1 (en) * | 1987-02-18 | 1987-04-02 | Brown, Boveri & Cie Ag, 6800 Mannheim, De | |
| CN104505314A (en) * | 2014-12-02 | 2015-04-08 | 浙江正泰电器股份有限公司 | Thermal relay temperature compensation structure |
| CN204668263U (en) * | 2015-05-19 | 2015-09-23 | 浙江天正电气股份有限公司 | A kind of thermal relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104900454A (en) | 2015-09-09 |
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