CN104900454A - Thermal relay - Google Patents
Thermal relay Download PDFInfo
- Publication number
- CN104900454A CN104900454A CN201510255615.3A CN201510255615A CN104900454A CN 104900454 A CN104900454 A CN 104900454A CN 201510255615 A CN201510255615 A CN 201510255615A CN 104900454 A CN104900454 A CN 104900454A
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- CN
- China
- Prior art keywords
- thermal relay
- housing
- push rod
- leg
- thermal
- 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
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, particularly a kind of thermal relay.
Background technology
Thermal relay is the protector utilizing the thermal effect principle of electric current to carry out work, is widely used in the overload protection of circuit or electric equipment (as motor), the protection that the disconnected phase that also can be used as motor had and current imbalance run.The heater element of the generation thermal effect of thermal relay is serially connected with in the circuit of electric equipment, and with the overload current of direct induction apparatus equipment, and the thermal induction element responding to overload current generally adopts bimetal leaf.
The mechanism for testing of present thermal relay (if publication number is " CN101656177A ", patent name is the Chinese patent of " thermal relay ") goes driving mechanism to realize by a testing button and a spring, and structure is more complicated.
Summary of the invention
In order to overcome the deficiency of background technology, the invention provides a kind of thermal relay, the mechanism for testing mainly solving present thermal relay goes driving mechanism to realize by a testing button and a spring, and the problem that structure is more complicated.
The technical solution adopted in the present invention is:
A kind of thermal relay, comprise housing, thermoinduction mechanism is provided with in described housing, contact separating/closing mechanism, thermal walking transmission mechanism and mechanism for testing, described thermoinduction mechanism is connected with contact separating/closing mechanism by thermal walking transmission mechanism, described contact separating/closing mechanism comprises mutually corresponding normally closed fixed contact and normally closed moving contact, described mechanism for testing comprises test block and push rod, elastic reset part is provided with between described push pedal and described inner walls, correspondingly with described test block top on described housing be provided with handle hole, and described inner walls is provided with support, described test block is movably connected on described support and bottom and described push rod links, the second place that described test block makes described push rod away from described normally closed moving contact, thermal relay be closed when comprising drive described push rod to back down when promoting primary importance that described normally closed moving contact makes thermal relay thread off left to the right and reset under the effect of elastic reset part.
Described test block comprises the first leg, the second leg and the 3rd leg that are provided with bottom push pedal, push pedal, and on described support, both sides are equipped with V-shaped groove, and described first leg and the second leg are all pressed in described V-shaped groove, and described 3rd leg and described push rod link.
Described push rod is provided with holding tank, and the both sides sidewall of described 3rd leg is corresponding with the both sides inwall of described holding tank, and described push rod is provided with the slide block be slidably matched with housing, and described slide block is provided with the projection corresponding with described normally closed moving contact.
Described push pedal sidewall is also connected with indicator board, and described housing is provided with the observation panel corresponding with described indicator board.
Described push pedal is also provided with baffle plate, and described baffle plate is corresponding with the inner left wall of described V-shaped groove.
Described indicator board is provided with buckle, and described push pedal is provided with the spacing hole with described buckle snap-fit engagement.
Described thermal walking transmission mechanism comprises the connecting rod with described housing hinge, and described elastic reset part is located between described push pedal and described connecting rod.
Described elastic reset part is spring.
Described thermoinduction mechanism comprises at least one two golden assembly, described two golden assembly is axially vertically installed in described housing, described housing comprises the side plate removably connected, described two golden assembly comprises bimetal leaf, described side plate is corresponding with bottom described bimetal leaf, is provided with gap between described bimetal leaf two bottom sides and inner walls.
Described two golden assembly also comprises the connecting plate that described bimetal leaf is connected with and is connected heater element with outside described bimetal leaf, and described housing bottom is provided with mount pad, and described bimetal leaf is connected with described mount pad screw by described connecting plate; Described two golden assembly is provided with 3, is provided with dividing plate described in each between two golden component bottom, described bimetal leaf both sides and be provided with described gap between described dividing plate and described mount pad.
The invention has the beneficial effects as follows: the invention provides a kind of thermal relay, comprise housing, housing is provided with handle hole, can be manipulated directly the rocking arm (i.e. test block) in thermal relay actuating mechanism by handle hole, then rocking arm directly drives push rod, drives the closed and disconnected of contact, such test operation more directly realizes, the transmission of motion is more succinct, and save testing button and spring, structure is compacter.
Accompanying drawing explanation
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 Fig. 3 A place enlarged drawing.
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 Fig. 8 B place enlarged drawing.
Figure 10 is the schematic perspective view of the two golden assembly of one embodiment of the invention.
Figure 11 is the schematic perspective view of the push rod of one embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described: as shown in the figure, a kind of thermal relay, comprise housing 1, thermoinduction mechanism is provided with in described housing 1, contact separating/closing mechanism, thermal walking transmission mechanism and mechanism for testing 2, described thermoinduction mechanism is connected with contact separating/closing mechanism by thermal walking transmission mechanism, described contact separating/closing mechanism comprises mutually corresponding normally closed fixed contact and normally closed moving contact 31, described mechanism for testing 2 comprises test block 21 and push rod 22, elastic reset part 15 is provided with between described push pedal 211 and described housing 1 inwall, correspondingly with described test block 21 top on described housing 1 be provided with handle hole 11, and described housing 1 inwall is provided with support 12, described test block 21 is movably connected on described support 12 and bottom and described push rod 22 link, the second place that described test block 21 makes described push rod 22 away from described normally closed moving contact 31, thermal relay be closed when comprising drive described push rod 22 to back down when promoting primary importance that described normally closed moving contact 31 makes thermal relay thread off left to the right and reset under elastic reset part 15 acts on.During use, instrument or direct finger can be used at handle hole push to test part left, push rod is driven to push normally closed moving contact to the right by between test, thermal relay is threaded off, during reset, reset under the effect of elastic reset part, normally closed moving contact is closed and the invention provides a kind of thermal relay, comprise housing, housing is provided with handle hole, can be manipulated directly the rocking arm (i.e. test block) in thermal relay actuating mechanism by handle hole, then rocking arm directly drives push rod, drive the closed and disconnected of contact, such test operation more directly realizes, the transmission of motion is more succinct, save testing button and spring, structure is compacter.
Be applied to an actuating mechanism for thermal overload relay, it comprises pedestal, operating parts, operating parts, test block, push rod, fixed contact, moving contact, spring, and connecting rod.Can manipulate the test block in thermal relay actuating mechanism directly by the handle hole on housing, then test block directly drives push rod, drives the closed and disconnected of contact, so directly realizes test function, drives indication piece indication mechanism state simultaneously.
In the housing, it has a pedestal; Two fixed contacts; Two moving contacts; Push rod; Test block; Connecting rod; Spring; Reset button, stop button, spring; It is characterized in that: product connecting rod of overdriving carrys out lead agency action under normal circumstances; The action of mechanism can be realized by handling test block, the location status of mechanism can be observed simultaneously by the indication piece on test block; Reset button has two states, and state mechanism after mechanism action can automatically reset, and a state needs manipulation operations part mechanism to reset after mechanism action; The disconnection of normally closed interlock can be realized by handling stop button.
In the present invention, as shown in the figure, described test block 21 comprises the first leg 212, second leg 219 and the 3rd leg 213 that are provided with bottom push pedal 211, push pedal 211, on described support 12, both sides are equipped with V-shaped groove 121, described first leg 212 and the second leg 219 are all pressed in described V-shaped groove 121, and described 3rd leg 213 links with described push rod 22.Here the first leg of test block swings bottom V-shaped groove, also can make hinged form here, can choose according to the actual requirements.
In the present invention, as shown in the figure, described push rod 22 is provided with holding tank 221, the both sides sidewall of described 3rd leg 213 is corresponding with the both sides inwall of described holding tank 221, described push rod 22 is provided with the slide block 221 be slidably matched with housing 1, and described slide block 221 is provided with the projection 222 corresponding with described normally closed moving contact 31.Time push pedal promotes left, the second leg swings inwall and then drive push rod on the right side of promotion holding tank to the right and promotes to the right, and time push pedal promotes to the right, the second leg swings left and promotes holding tank inner left wall and then drive push rod to promote left.
In the present invention, as shown in the figure, described push pedal 211 sidewall is also connected with indicator board 214, and described housing 1 is provided with the observation panel 13 corresponding with described indicator board 214.Can learn the situation in thermal relay easily, structure is simple, easy to use.
In the present invention, as shown in the figure, described push pedal 211 is also provided with baffle plate 215, described baffle plate 215 is corresponding with the inner left wall of described V-shaped groove 121.Preventing test block to be longly deep in product when handling test function, damaging product component.
In the present invention, as shown in the figure, described indicator board 214 is provided with buckle, and described push pedal 211 is provided with the spacing hole with described buckle snap-fit engagement.Here indication piece and buckle adopt split-type structural and adopt the mounting means of clamping, and easy to assembly, result of use is good.
In the present invention, as shown in the figure, described thermal walking transmission mechanism comprises the connecting rod 14 hinged with described housing 1, and described elastic reset part 15 is located between described push pedal 211 and described connecting rod 14.Be mounted opposite in inner walls, stroke is shorter, compact conformation, and result of use is good.
In the present invention, as shown in the figure, described elastic reset part 15 is spring.Also can adopt other elastic reset parts herein, as rubber reinforcement, extension spring etc., spring is convenient to obtain, and cost is lower, is preferred version.
In the present invention, as shown in the figure, described thermoinduction mechanism comprises at least one two golden assembly, described two golden assembly is axially vertically installed in described housing 1, described housing 1 comprises the side plate 17 removably connected, described two golden assembly comprises bimetal leaf 41, and described side plate 17 is corresponding with bottom described bimetal leaf 41, is provided with gap 42 between described bimetal leaf 41 two bottom sides and housing 1 inwall.Its pair of vertical being arranged in housing of golden assembly, and housing bottom is with described two golden component bottom is corresponding is provided with the side plate removably connected, needs regulate two golden in, can pull down side plate and adjustable easily, structure is simply, easy to manufacture, easy to use.
In the present invention, as shown in the figure, described two golden assembly also comprises the connecting plate 43 that described bimetal leaf 41 is connected with and is connected heater element 44 with outside described bimetal leaf 41, be provided with mount pad 18 bottom described housing 1, described bimetal leaf 41 is connected with described mount pad 18 screw by described connecting plate 43; Described two golden assembly is provided with 3, is provided with dividing plate 45 described in each between two golden component bottom, described bimetal leaf 41 both sides and be provided with described gap 42 between described dividing plate 45 and described mount pad 18.Compact conformation, easy for installation, 3 groups of two golden assemblies can regulate, and convenient, result of use is good.
Embodiment should not be considered as limitation of the present invention, but any improvement done based on spirit of the present invention, all should within protection scope of the present invention.
Claims (10)
1. a thermal relay, comprise housing (1), described housing is provided with thermoinduction mechanism in (1), contact separating/closing mechanism, thermal walking transmission mechanism and mechanism for testing (2), described thermoinduction mechanism is connected with contact separating/closing mechanism by thermal walking transmission mechanism, described contact separating/closing mechanism comprises mutually corresponding normally closed fixed contact and normally closed moving contact (31), it is characterized in that: described mechanism for testing (2) comprises test block (21) and push rod (22), elastic reset part (15) is provided with between described push pedal (211) and described housing (1) inwall, described housing (1) is above corresponding with described test block (21) top is provided with handle hole (11), and described housing (1) inwall is provided with support (12), described test block (21) is movably connected on described support (12) upper and bottom and described push rod (22) and links, described test block (21) drives described push rod (22) to back down the primary importance that described normally closed moving contact (31) makes thermal relay thread off and the second place making described push rod (22) away from described normally closed moving contact (31), thermal relay be closed under elastic reset part (15) effect during reset to the right when comprising promotion left.
2. a kind of thermal relay according to claim 1, it is characterized in that: described test block (21) comprises push pedal (211), push pedal (211) bottom is provided with the first leg (212), the second leg (219) and the 3rd leg (213), the upper both sides of described support (12) are equipped with V-shaped groove (121), described first leg (212) and the second leg (219) are all pressed in described V-shaped groove (121), and described 3rd leg (213) and described push rod (22) link.
3. a kind of thermal relay according to claim 2, it is characterized in that: described push rod (22) is provided with holding tank (221), the both sides sidewall of described 3rd leg (213) is corresponding with the both sides inwall of described holding tank (221), described push rod (22) is provided with the slide block (221) be slidably matched with housing (1), and described slide block (221) is provided with the projection (222) corresponding with described normally closed moving contact (31).
4. a kind of thermal relay according to claim 2, is characterized in that: described push pedal (211) sidewall is also connected with indicator board (214), and described housing (1) is provided with the observation panel (13) corresponding with described indicator board (214).
5. a kind of thermal relay according to claim 2, is characterized in that: described push pedal (211) is also provided with baffle plate (215), and described baffle plate (215) is corresponding with the inner left wall of described V-shaped groove (121).
6. a kind of thermal relay according to claim 4, is characterized in that: described indicator board (214) is provided with buckle, and described push pedal (211) is provided with the spacing hole with described buckle snap-fit engagement.
7. a kind of thermal relay according to claim 2, it is characterized in that: described thermal walking transmission mechanism comprises the connecting rod (14) hinged with described housing (1), described elastic reset part (15) is located between described push pedal (211) and described connecting rod (14).
8. a kind of thermal relay according to claim 7, is characterized in that: described elastic reset part (15) is spring.
9. a kind of thermal relay according to claim 1, it is characterized in that: described thermoinduction mechanism comprises at least one two golden assembly, described two golden assembly is axially vertically installed in described housing (1), described housing (1) comprises the side plate (17) removably connected, described two golden assembly comprises bimetal leaf (41), described side plate (17) is corresponding with described bimetal leaf (41) bottom, is provided with gap (42) between described bimetal leaf (41) two bottom sides and housing (1) inwall.
10. a kind of thermal relay according to claim 9, it is characterized in that: described two golden assembly also comprises outside connecting plate (43) and described bimetal leaf (41) that described bimetal leaf (41) is connected with and is connected heater element (44), described housing (1) bottom is provided with mount pad (18), and described bimetal leaf (41) is connected with described mount pad (18) screw by described connecting plate (43); Described two golden assembly is provided with 3, is provided with dividing plate (45) described in each between two golden component bottom, described bimetal leaf (41) both sides and be provided with described gap (42) between described dividing plate (45) and described mount pad (18).
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 true CN104900454A (en) | 2015-09-09 |
| CN104900454B CN104900454B (en) | 2017-04-12 |
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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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709457A (en) * | 2019-01-22 | 2019-05-03 | 苏州工业职业技术学院 | A kind of Insulation monitoring and thermal protector reset test 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709457A (en) * | 2019-01-22 | 2019-05-03 | 苏州工业职业技术学院 | A kind of Insulation monitoring and thermal protector reset test device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104900454B (en) | 2017-04-12 |
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