CN203882875U - Thermal relay - Google Patents

Thermal relay Download PDF

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Publication number
CN203882875U
CN203882875U CN201420316398.5U CN201420316398U CN203882875U CN 203882875 U CN203882875 U CN 203882875U CN 201420316398 U CN201420316398 U CN 201420316398U CN 203882875 U CN203882875 U CN 203882875U
Authority
CN
China
Prior art keywords
cam
spring
thermal relay
lever
shell
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.)
Expired - Fee Related
Application number
CN201420316398.5U
Other languages
Chinese (zh)
Inventor
朱华俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Relay At Dawn Co Ltd
Original Assignee
Ningbo Relay At Dawn Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo Relay At Dawn Co Ltd filed Critical Ningbo Relay At Dawn Co Ltd
Priority to CN201420316398.5U priority Critical patent/CN203882875U/en
Application granted granted Critical
Publication of CN203882875U publication Critical patent/CN203882875U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a thermal relay. At least one bimetallic strip is fixedly disposed in a housing, and the upper ends of the bimetallic strips are provided with an insulating rod; a support block is disposed in the housing, a groove is formed in the support block, and the insulating rod is installed in the groove; the right end of the insulating rod is connected with a hinge at the upper end of a cam supporting member, a cam part of the cam supporting member is movably connected to a first support seat through a hinge, and the right end of the cam supporting member abuts against a movable contact piece; the lower part of the cam supporting member is provided with a spring, the other end of the spring is connected with a lever, and the lever is movably connected to a second support seat through a hinge; and the bottom of the housing is provided with a counter bore, an adjusting bolt is disposed in the counter bore, and the upper end of the adjusting bolt abuts against the lever. The thermal relay is relative simple in structure, can be adapted to requirements of different using conditions and has a large application space; and, through adjustments of an initial elastic force of the spring, sensitivity of the relay to temperature is changed.

Description

A kind of thermal relay
Technical field
The utility model relates to a kind of relay, is specifically related to a kind of thermal relay.
Background technology
Relay is as a kind of electronic control component; its scope of application is quite extensive, is conventionally applied in automatic control circuit, and its actual electric current that is a kind of use is less removes to control a kind of automatic switch of larger electric current; therefore play automatic adjusting in circuit, the effects such as safeguard protection.
Existing thermal relay is to utilize the bimetal leaf of the different coefficients of expansion that bending in various degree occurs, and promotes connecting rod action, realizes the folding of controlled circuit; Because the coefficient of expansion of bimetal leaf remains unchanged, so relay remains unchanged to the sensitiveness of variations in temperature, therefore the occasion of application is very limited.
Utility model content
(1) technical problem that will solve
It is relatively simple that the technical problems to be solved in the utility model is to provide a kind of structure, can regulate the thermal relay of temperature susceplibility.
(2) technical scheme
For solving the problems of the technologies described above, the utility model provides a kind of thermal relay, comprises shell, and described enclosure is fixedly installed at least one bimetal leaf, and the upper end of described bimetal leaf is provided with insulating bar; Described enclosure is provided with back-up block, in described back-up block, offers groove, and described insulating bar is arranged in described groove; The right-hand member of described insulating bar and cam prop up the upper end chain connection of part, and the cam part that described cam props up part is movably connected on the first bearing by hinge, and the right-hand member that described cam props up part abuts on movable contact spring; The below that described cam props up part is provided with spring, and the other end of described spring is connected with lever, and described lever is movably connected on the second bearing by hinge; The bottom of described shell offers counter sink, in described counter sink, is provided with adjusting bolt, and the upper end of described adjusting bolt abuts on lever.
Wherein, the upper end that described cam props up part is provided with back-moving spring, and the other end of described back-moving spring is fixedly connected on shell.
Wherein, the direction of described bimetal leaf temperature distortion left.
Wherein, on movable contact spring, be provided with kink.
Wherein, the right side correspondence of described movable contact spring is provided with static contact.
(3) beneficial effect
Compared with prior art, the utility model thermal relay structure is relatively simple, thereby changes the sensitivity of relay to temperature by the initial elastic force of regulating spring, can adapt to the demand of different service conditions, has larger application space.
Accompanying drawing explanation
Fig. 1 is the off-state schematic diagram of a kind of thermal relay of the utility model.
Fig. 2 is the closure state schematic diagram of a kind of thermal relay of the utility model.
Fig. 3 is that a kind of thermal relay of the utility model changes the structural representation after adjusting bolt.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but can not be used for limiting scope of the present utility model.
The structure of a kind of thermal relay of the utility model as Figure 1-3, comprise shell 1, described shell 1 inside is fixedly installed at least one bimetal leaf 2, thermal relay is as shown provided with two bimetal leafs 2, makes bimetal leaf 2 have enough large active force promotion insulating bar 3 and is moved to the left; The upper end of described bimetal leaf 2 is provided with insulating bar 3; Described shell 1 inside is provided with back-up block 101, offers groove 103 in described back-up block, and described insulating bar 3 is arranged in described groove 103; The right-hand member of described insulating bar 3 and cam prop up the upper end chain connection of part 4, and the cam part that described cam props up part 4 is movably connected on the first bearing 10 by hinge, and the right-hand member that described cam props up part 4 abuts on movable contact spring 11; The below that described cam props up part 4 is provided with spring 9, and the link position that described spring 9 and cam prop up part 4 is positioned at cam and props up part 4 and be connected the right side of hinge with the first bearing 10; The other end of described spring 9 is connected with lever 7, and described lever 7 is movably connected on the second bearing 8 by hinge; The bottom of described shell 1 offers counter sink 102, in described counter sink 102, is provided with adjusting bolt 6, and the upper end of described adjusting bolt 6 abuts on lever 7.
Preferably, the upper end that described cam props up part 4 is provided with back-moving spring 5, and the other end of described back-moving spring 5 is fixedly connected on shell 1.
Preferably, the direction of described bimetal leaf 2 temperature distortions left.
Preferably, on movable contact spring 11, be provided with kink.
Preferably, the right side correspondence of described movable contact spring 11 is provided with static contact.
The use principle of the utility model thermal relay is as follows: when ambient temperature rises, because the coefficient of expansion difference of bimetal leaf 2 both sides causes bimetal leaf 2 crooked left, thereby drive insulating bar 3 to be moved to the left, insulating bar 3 drives with it hinged cam to prop up part 4 and rotates counterclockwise, along with propping up part 4, cam rotates counterclockwise, the right-hand member that described cam props up part 4 produces active force to the right to the kink of movable contact spring 11, movable contact spring shown in making 11 is crooked to the right, finally make movable contact spring 11 contact as shown in Figure 2 with static contact, realize the connection of controlled circuit.
When temperature reduces, bimetal leaf 2 restores to the original state, and described cam props up part 4 and clockwise rotates under the effect of back-moving spring 5, drives insulating bar 3 to move right simultaneously, and movable contact spring 11 restores to the original state under the effect of self elastic force, realizes the disconnection of controlled circuit.
The heat sensitivity that need to change thermal relay is only to need to regulate adjusting nut 6.When needs reduce heat sensitivity, by making lever 7 take the second bearing 8 in adjusting nut 6 precession shells 1, clockwise rotate as fulcrum, the elastic deformation of spring 9 increases, so time bimetal leaf 2 need to produce distortion greatly, could realize the connection of controlled circuit, reduce the heat sensitivity of relay.When needs improve heat sensitivity, vice versa.
The beneficial effect the utlity model has: the utility model thermal relay structure is relatively simple, thus by the initial elastic force of regulating spring, change the sensitivity of relay to temperature, can adapt to the demand of different service conditions, there is larger application space.
These are only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (5)

1. a thermal relay, is characterized in that: comprise shell (1), described shell (1) inside is fixedly installed at least one bimetal leaf (2), and the upper end of described bimetal leaf (2) is provided with insulating bar (3); Described shell (1) inside is provided with back-up block (101), offers groove (103) in described back-up block, and described insulating bar (3) is arranged in described groove (103); The right-hand member of described insulating bar (3) and cam prop up the upper end chain connection of part (4), the cam part that described cam props up part (4) is movably connected in the first bearing (10) above by hinge, and the right-hand member that described cam props up part (4) abuts on movable contact spring (11); The below that described cam props up part (4) is provided with spring (9), and the other end of described spring (9) is connected with lever (7), and described lever (7) is movably connected on the second bearing (8) by hinge; The bottom of described shell (1) offers counter sink (102), is provided with adjusting bolt (6) in described counter sink (102), and the upper end of described adjusting bolt (6) abuts on lever (7).
2. a kind of thermal relay according to claim 1, is characterized in that: the upper end that described cam props up part (4) is provided with back-moving spring (5), and the other end of described back-moving spring (5) is fixedly connected on shell (1).
3. a kind of thermal relay according to claim 1, is characterized in that: the direction of described bimetal leaf (2) temperature distortion left.
4. a kind of thermal relay according to claim 1, is characterized in that: movable contact spring is provided with kink on (11).
5. a kind of thermal relay according to claim 4, is characterized in that: the right side correspondence of described movable contact spring (11) is provided with static contact.
CN201420316398.5U 2014-06-13 2014-06-13 Thermal relay Expired - Fee Related CN203882875U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420316398.5U CN203882875U (en) 2014-06-13 2014-06-13 Thermal relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420316398.5U CN203882875U (en) 2014-06-13 2014-06-13 Thermal relay

Publications (1)

Publication Number Publication Date
CN203882875U true CN203882875U (en) 2014-10-15

Family

ID=51683349

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420316398.5U Expired - Fee Related CN203882875U (en) 2014-06-13 2014-06-13 Thermal relay

Country Status (1)

Country Link
CN (1) CN203882875U (en)

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141015

Termination date: 20150613