CN210349745U

CN210349745U - Residual current circuit breaker

Info

Publication number: CN210349745U
Application number: CN201921635857.5U
Authority: CN
Inventors: 李文杰; 李文俊; 李文伟
Original assignee: Dalian Ino Tech Co Ltd
Current assignee: Dalian Ino Tech Co Ltd
Priority date: 2019-09-28
Filing date: 2019-09-28
Publication date: 2020-04-17
Anticipated expiration: 2029-09-28

Abstract

The utility model provides an electric leakage circuit breaker, including base, upper cover, contact system, input wiring end, output wiring end, release, actuating mechanism and be used for detecting whether normal test mechanism of earth leakage protection function, contact system include the static contact and with static contact complex moving contact, be equipped with the mount in the upper cover, the mount includes first curb plate, the second curb plate that links to each other with first curb plate and the third curb plate that links to each other with the second curb plate, the orientation of first curb plate is the same with the orientation of third curb plate, be equipped with the dead lever the same with first curb plate orientation on the second curb plate, the release outside is equipped with the casing, casing bottom cover is located on the dead lever, the dead lever outer end offsets with the upper cover inner wall. Compare current circuit breaker, the utility model discloses compact structure, firm in connection, security are high and stability is high.

Description

Residual current circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus technical field, concretely relates to leakage circuit breaker.

Background

The leakage breaker is a switch which can automatically act when the leakage current in the circuit exceeds a preset value. The conventional leakage circuit breaker is classified into a voltage type and a current type, and the current type is classified into an electromagnetic type and an electronic type.

The existing residual current circuit breaker comprises a base, a contact system arranged inside the base, an input wiring terminal, an output wiring terminal, a release, an execution mechanism, an electromagnetic mechanism and a test mechanism used for detecting whether a leakage protection function is normal or not, wherein the contact system comprises a fixed contact and a moving contact matched with the fixed contact. The tripper among the current leakage circuit breaker is installed insecurely, and when installation or control switch opened and close, the tripper produced the shake easily, and leads to the tripper can't realize its function to have the potential safety hazard, take place accident easily. The test mechanism in the existing residual current circuit breaker is unstable in connection and easy to cause functional failure, so that whether the residual current circuit breaker is normal or not can not be accurately detected.

SUMMERY OF THE UTILITY MODEL

Based on the problem, the utility model aims to provide a compact structure, firm in connection, security are high and the high electric leakage circuit breaker of stability.

Aiming at the problems, the following technical scheme is provided: a leakage circuit breaker comprises a base, an upper cover, a contact system, an input wiring end, an output wiring end, a release, an actuating mechanism and a testing mechanism for detecting whether the leakage protection function is normal or not, wherein the contact system comprises a static contact and a moving contact matched with the static contact, a fixed frame is arranged in the upper cover and comprises a first side plate, a second side plate connected with the first side plate and a third side plate connected with the second side plate, the direction of the first side plate is the same as that of the third side plate, a fixed rod in the same direction as that of the first side plate is arranged on the second side plate, a shell is arranged outside the release, the bottom of the shell is sleeved on the fixed rod, the outer end of the fixed rod abuts against the inner wall of the upper cover, a convex block is arranged on one side of the fixed frame facing the input wiring end in the upper cover, the testing mechanism comprises a testing button, a spring arranged at the bottom of the testing button and sleeved on the positioning column, and a first torsion spring arranged below the spring, wherein a connecting column is arranged on one side of the convex block, the first torsion spring is sleeved on the connecting column, a fixing seat is arranged on one side, facing the input wiring end, of the third side plate, a clamping groove is formed in the fixing seat, a conducting strip is arranged in the clamping groove, one section of the conducting strip abuts against the bottom surface of the clamping groove, the other section of the conducting strip penetrates through the side wall of the clamping groove and extends downwards, one end of the first torsion spring is arranged below the testing button and swings up and down along with the pressing of the testing button to realize contact or disconnection matching with the conducting strip, and the other end of the first torsion spring is positioned on one.

In the structure, the tripper passes through the casing fixed with the dead lever on, and the casing passes through first curb plate, second curb plate and third curb plate cladding fixed for the compactness more of structure prevents that it from producing and rocks, thereby has improved the stability of tripper, has improved the utility model discloses a security and reliability. Dead lever and upper cover offset can improve the joint strength between mount and the casing, can further prevent that the casing from deviating from the mount, improved the utility model discloses a reliability. When the actuating mechanism controls the moving contact and the static contact to be closed, the lower end of the first torsion spring abuts against the top end of the moving contact, the top end of the first torsion spring is in a disconnected state with the conducting strip, after the test button is pressed down, the top end of the first torsion spring abuts against the conducting strip, and if the moving contact is disconnected with the static contact and the lower end of the first torsion spring is disconnected with the moving contact, the electric leakage protection function is normal; on the contrary, if the moving contact and the static contact are still in a closed state, the electric leakage protection function is invalid. It should be noted that the conductive plate 3 is electrically connected to the test circuit, which is more common in the prior art, so we do not describe it in detail in this embodiment. Can be convenient for test button through setting up the spring and reset after pressing, can carry out spacing installation to the spring through setting up the reference column, can be convenient for the workman and install, improved work efficiency, and can improve the utility model discloses the stability of structure has improved the utility model discloses a reliability. The firmness of the conducting strip can be improved by arranging the clamping groove to fix the conducting strip, so that the stability and the reliability of the testing mechanism during testing can be improved. Lug and integrative setting of upper cover can improve the compact of structure, thereby improved the utility model discloses a stability and security. The first torsion spring is connected with the upper cover through the connecting column, so that the stability of the first torsion spring can be improved, and the reliability and the accuracy of the testing mechanism for detecting whether the leakage protection function is normal are improved.

The utility model discloses further set up to, be equipped with display mechanism in the upper cover, display mechanism is including instructing commentaries on classics board, second torsional spring and indicator plate, instruct commentaries on classics board top and link to each other with the indicator plate, the bottom links to each other with the moving contact, the mount is equipped with the adapter sleeve towards one side of input wiring end, instruct on the lateral wall of commentaries on classics board vertical insert be equipped with the support column of adapter sleeve looks adaptation, it is equipped with the fixture block to be located the adapter sleeve top on instructing the lateral wall of commentaries on classics board, second torsional spring cover is located on the adapter sleeve and upper end is fixed mutually with the fixture block, and the lower extreme supports on the mount, it can swing to instruct commentaries on classics board relative support column, the indicator plate includes the green board that sets up towards input wiring end and the red board that sets up.

In the structure, when the actuating mechanism controls the moving contact and the fixed contact to be closed, the observation hole displays the green plate, when electric leakage occurs, the release controls the moving contact to be disconnected with the fixed contact, the swing of the moving contact drives the indication rotating plate to swing, and the observation hole displays the red plate. Observe the colour of indicator board through the observation hole and can convenient to use person observe the utility model discloses a whether the function is normal, thereby improved the utility model discloses a convenience and security. Can carry on spacingly to the support column through setting up the adapter sleeve with the support column cooperation to can be convenient for instruct the commentaries on classics board to rotate, improve the utility model discloses a fastness and reliability. Through setting up red board and green board can the person of facilitating the use come to judge the in service behavior of circuit breaker through the colour. Through setting up the second torsional spring can improve the elastic force when instructing the commentaries on classics board swing to improved the stability when instructing the commentaries on classics board swing, and can avoid instructing the commentaries on classics board and rotate by oneself, improved the utility model discloses a reliability.

The utility model discloses further set up to, be equipped with the link that is used for fixed moving contact in the base, the both ends of link are equipped with the pivot that links to each other with the base, the link is through the relative base of pivot towards the static contact swing, first torsional spring links to each other with the link, the middle part of link is equipped with the jack catch, the bottom of instructing the commentaries on classics board links to each other with the jack catch adaptation.

In the structure, can make two moving contacts move in step through setting up the link, thereby improve the utility model discloses a stability. Through jack catch and instruction commentaries on classics board looks block, can improve the joint strength who instructs between commentaries on classics board and the link to can be convenient for instruct the rotation of changeing the board, improved the utility model discloses a convenience and stability.

The utility model discloses further set up to, be equipped with the fixed column that offsets with the upper cover on the lateral wall relative with the dead lever on the second curb plate.

Adopt above-mentioned structure, can improve the joint strength between mount and the upper cover, can be further prevent that the release from deviating from the mount to improve the stability of mount, improved the utility model discloses a reliability.

The utility model discloses further set up to, the test button bottom is equipped with the picture peg, on cover and be equipped with the passageway of sliding with the corresponding position department of picture peg.

In the structure, can prevent through setting up the passageway of sliding and picture peg cooperation that test button from rocking to improve test button's stability, improved the utility model discloses a reliability and security.

The utility model discloses further set up to, the picture peg bottom is equipped with down and the supporting legs that extends to the outside, the supporting legs is provided with two relatively, the outside of supporting legs is equipped with the barb.

In the structure, can improve the joint strength between picture peg and the passageway that slides through setting up the supporting legs, and can prevent through setting up the barb that test button from covering from the top and coming off to improve the joint strength between test button and the upper cover, improved test button's stability, improved the utility model discloses a security and reliability.

The utility model discloses further set up to, be equipped with the open slot that the opening is down on the supporting legs.

In the structure, can make the supporting legs have elastic deformation's ability through setting up the open slot to the dismouting of test button that can be convenient for, and can improve the stability between supporting legs and the upper cover, improved the utility model discloses a convenience and reliability.

The utility model has the advantages that: compare current circuit breaker, the utility model discloses compact structure, firm in connection, security are high and stability is high. The tripper passes through on the casing is fixed and the dead lever, and the casing passes through first curb plate, second curb plate and third curb plate cladding fixed for the structure compactness more prevents that it from producing and rocking, thereby has improved the stability of tripper, has improved the utility model discloses a security and reliability. Dead lever and upper cover offset can improve the joint strength between mount and the casing, can further prevent that the casing from deviating from the mount, improved the utility model discloses a reliability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a cross-sectional view a-a of fig. 2.

Fig. 4 is a cross-sectional perspective view of B-B in fig. 2.

Fig. 5 is a schematic structural view of the upper cover of the present invention.

Fig. 6 is a schematic structural diagram of the internal structure of the present invention.

Fig. 7 is a schematic structural view of the inside of the upper cover of the present invention.

Fig. 8 is a schematic structural view of the middle fixing frame of the present invention.

Fig. 9 is a schematic structural diagram of the middle test button of the present invention.

The reference numbers in the figures mean: 1-a base; 2-covering the upper cover; 11-a contact system; 12-an input terminal; 13-output terminals; 21-a release; 22-an actuator; 23-test button; 111-a stationary contact; 112-moving contact; 3-a fixing frame; 31-a first side panel; 32-a second side panel; 33-a third side panel; 321-a fixing rod; 211-a housing; 24-a bump; 241-a positioning column; 231-a spring; 242-connecting column; 232-a first torsion spring; 4-a display mechanism; 41-indicating rotating plate; 42-a second torsion spring; 43-an indicator panel; 25-connecting sleeves; 411-support column; 412-a cartridge; 431-green sheet; 432-red panel; 26-a viewing aperture; 5-a connecting frame; 51-a rotating shaft; 52-a jaw; 322-fixed column; 6-inserting plates; 27-a glide channel; 61-supporting feet; 611-barbs; 612-open slots; 331-a fixed seat; 3311 a locking groove; 7-conducting strip.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

It should be noted that all the directional indicators (such as upper, lower, top, bottom …) in the description of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed.

The residual current circuit breaker shown in fig. 1 to 9 includes a base 1, an upper cover 2, a contact system 11, an input terminal 12, an output terminal 13, a release 21, an actuator 22, and a testing mechanism for detecting whether a leakage protection function is normal, where the contact system 11 includes a fixed contact 111 and a movable contact 112 matched with the fixed contact 111, a fixed mount 3 is disposed in the upper cover 2, the fixed mount 3 includes a first side plate 31, a second side plate 32 connected to the first side plate 31, and a third side plate 33 connected to the second side plate 32, the first side plate 31 is oriented in the same direction as the third side plate 33, a fixing rod 321 oriented in the same direction as the first side plate 31 is disposed on the second side plate 32, a housing 211 is disposed outside the release 21, the bottom of the housing 211 is sleeved on the fixing rod 321, and the outer end of the fixing rod 321 abuts against the inner wall of the upper cover 2, a bump 24 is arranged on one side of the upper cover 2, which is located on the fixed frame 3 and faces the input terminal 12, a positioning column 241 is arranged on the bump 24, the testing mechanism comprises a testing button 23, a spring 231 which is arranged at the bottom of the testing button 23 and sleeved on the positioning column 241, and a first torsion spring 232 which is arranged below the spring 231, a connecting column 242 is arranged on one side of the bump 24, the first torsion spring 232 is sleeved on the connecting column 242, a fixed seat 331 is arranged on one side of the third side plate 33, which faces the input terminal 12, the fixed seat 331 is provided with a clamping groove 3311, a conducting strip 7 is arranged in the clamping groove 3311, one section of the conducting strip 7 is abutted against the bottom surface of the clamping groove 3311, the other section of the conducting strip passes through the side wall of the clamping groove 3311 and extends downwards, one end of the first torsion spring 232 is arranged below the testing button 23 and swings up and, the other end is located at one side of the movable contact 112 and abuts against the movable contact 112 in a state that the movable contact 112 and the fixed contact 111 are closed.

In the structure, the tripper 21 passes through the casing 211 to be fixed with the dead lever 321 on, the casing 211 passes through the cladding of first curb plate 31, second curb plate 32 and third curb plate 33 to be fixed for structure compactness more prevents that it from producing and rocking, thereby has improved tripper 21's stability, has improved the utility model discloses a security and reliability. Dead lever 321 offsets with upper cover 2 and can improve the joint strength between mount 3 and the casing 211, can further prevent that casing 211 from deviating from mount 3, has improved the utility model discloses a reliability. When the actuator 22 controls the movable contact 112 and the fixed contact 111 to be closed, the lower end of the first torsion spring 232 abuts against the top end of the movable contact 112, the top end of the first torsion spring 232 and the conducting strip 7 are in a disconnected state, after the test button 23 is pressed, the top end of the first torsion spring 232 abuts against the conducting strip 7, and if the movable contact 112 and the fixed contact 111 are disconnected and the lower end of the first torsion spring 232 and the movable contact 112 are disconnected, the electric leakage protection function is normal; on the contrary, if the moving contact 112 and the fixed contact 111 are still in the closed state, the leakage protection function is disabled. Can be convenient for test button 23 through setting up spring 231 and reset after pressing, can carry out spacing installation to spring 231 through setting up reference column 241, can be convenient for the workman and install, improved work efficiency, and can improve the utility model discloses the stability of structure has improved the utility model discloses a reliability. The firmness of the conductive sheet 7 can be improved by fixing the conductive sheet 7 through the engaging groove 3311, so that the stability and reliability of the test mechanism during the test can be improved. Lug 24 sets up with upper cover 2 is integrative, can improve the compact of structure to improve the utility model discloses a stability and security. First torsional spring 232 links to each other with upper cover 2 through spliced pole 242 and can improve first torsional spring 232 stability to whether reliability and accuracy that test mechanism detected the earth leakage protection function normal have been improved.

In this embodiment, a display mechanism 4 is disposed in the upper cover 2, the display mechanism 4 includes an indicating rotary plate 41, a second torsion spring 42 and an indicating plate 43, the top end of the indicating rotating plate 41 is connected with the indicating plate 43, the bottom end is connected with the movable contact 112, a connecting sleeve 25 is arranged on one side of the fixed frame 3 facing the input terminal 12, a supporting column 411 matched with the connecting sleeve 25 is vertically inserted on the side wall of the indicating rotating plate 41, a clamping block 412 is arranged on the side wall of the indicating rotating plate 41 above the connecting sleeve 25, the second torsion spring 42 is sleeved on the connecting sleeve 25, the upper end of the second torsion spring is fixed with the clamping block 412, the lower end of the second torsion spring is abutted against the fixing frame 3, the indicating rotary plate 41 is swingable relative to the support column 411, the indicating plate 43 includes a green plate 431 provided toward the input terminal 12 and a red plate 432 provided toward the output terminal 13, the top of the upper cover 2 is provided with a viewing hole 26 for displaying a green plate 431 or a red plate 432.

In the above structure, when the actuator 22 controls the movable contact 112 and the fixed contact 111 to be closed, the observation hole 26 displays the green plate 431, when the leakage occurs, the release 21 controls the movable contact 112 and the fixed contact 111 to be disconnected, the swing of the movable contact 112 drives the indicating rotating plate 41 to swing, and the observation hole 26 displays the red plate 432. Observe the colour of indicator panel 43 through observing hole 26 and can convenient to use person observe the utility model discloses a whether the function is normal, thereby improved the utility model discloses a convenience and security. Can carry on spacingly to support column 411 through setting up the cooperation of adapter sleeve 25 and support column 411 to can be convenient for instruct the commentaries on classics board 41 to rotate, improved the utility model discloses a fastness and reliability. The red plate 432 and the green plate 431 are arranged, so that a user can conveniently judge the use condition of the circuit breaker through colors. Can improve the elastic force when instructing commentaries on classics board 41 swing through setting up second torsional spring 42 to improved the stability when instructing commentaries on classics board 41 swing, and can avoid instructing commentaries on classics board 41 and rotate by oneself, improved the utility model discloses a reliability.

In this embodiment, a connecting frame 5 for fixing the moving contact 112 is disposed in the base 1, two ends of the connecting frame 5 are provided with rotating shafts 51 connected to the base 1, the connecting frame 5 can swing toward the fixed contact 111 relative to the base 1 through the rotating shafts 51, the first torsion spring 232 is connected to the connecting frame 5, the middle of the connecting frame 5 is provided with a clamping jaw 52, and the bottom end of the indicating rotating plate 41 is connected to the clamping jaw 52 in a matching manner.

In the above-mentioned structure, can make two moving contacts 112 activity in step through setting up link 5, thereby improved the utility model discloses a stability. Through jack catch 52 with instruct changeing board 41 looks block, can improve the joint strength who instructs between changeing board 41 and the link 5 to can be convenient for instruct changeing board 41's rotation, improved the utility model discloses a convenience and stability.

In this embodiment, a fixing column 322 abutting against the upper cover 2 is disposed on a side wall of the second side plate 32 opposite to the fixing rod 321.

Adopt above-mentioned structure, can improve the joint strength between mount 3 and the upper cover 2, can be further prevent that release 21 from deviating from mount 3 to improve mount 3's stability, improved the utility model discloses a reliability.

In this embodiment, the bottom of the test button 23 is provided with an insertion plate 6, and a sliding channel 27 is arranged at a position on the upper cover 2 corresponding to the insertion plate 6.

In the structure, can prevent through setting up slide channel 27 and the cooperation of picture peg 6 that test button 23 from rocking to improve test button 23's stability, improved the utility model discloses a reliability and security.

In this embodiment, the bottom of the inserting plate 6 is provided with two support legs 61 extending downwards and outwards, and the outer sides of the support legs 61 are provided with barbs 611.

In the structure, can improve picture peg 6 and the joint strength between the passageway 27 that slides through setting up supporting legs 61, and can prevent through setting up barb 611 that test button 23 from coming off from upper cover 2 to improve the joint strength between test button 23 and the upper cover 2, improved test button 23's stability, improved the utility model discloses a security and reliability.

In this embodiment, the supporting leg 61 is provided with an opening groove 612 with a downward opening.

In the structure, can make supporting legs 61 have elastic deformation's ability through setting up open slot 612 to the dismouting of test button 23 of can being convenient for, and can improve the stability between supporting legs 61 and the upper cover 2, improved the utility model discloses a convenience and reliability.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an electric leakage circuit breaker, includes base, upper cover, contact system, input wiring end, output wiring end, release, actuating mechanism and is used for detecting whether normal test mechanism of earth leakage protection function, contact system include the static contact and with static contact complex moving contact, its characterized in that: the testing mechanism comprises a testing button, a spring arranged at the bottom of the testing button and sleeved on the positioning column and a first torsion spring arranged below the spring, wherein a connecting column is arranged at one side of the lug, the first torsion spring is sleeved on the connecting column, and a fixing seat is arranged at one side of the third side plate facing the input connecting terminal, the testing device comprises a fixed seat, a clamping groove is formed in the fixed seat, a conducting strip is arranged in the clamping groove, one section of the conducting strip abuts against the bottom surface of the clamping groove, the other section of the conducting strip penetrates through the side wall of the clamping groove and extends downwards, one end of a first torsion spring is arranged below a testing button and swings up and down along with the pressing of the testing button so as to be in contact with or disconnected from the conducting strip, and the other end of the first torsion spring is located on one side of a moving contact and abuts against the top end of the moving contact in a.

2. A residual current circuit breaker as claimed in claim 1, characterized in that: the improved structure is characterized in that a display mechanism is arranged in the upper cover and comprises an indicating rotating plate, a second torsion spring and an indicating plate, the top end of the indicating rotating plate is connected with the indicating plate, the bottom end of the indicating rotating plate is connected with the moving contact, a connecting sleeve is arranged on one side, facing the input wiring end, of the fixing frame, a supporting column matched with the connecting sleeve is vertically inserted into the side wall of the indicating rotating plate, a clamping block is arranged above the connecting sleeve on the side wall of the indicating rotating plate, the second torsion spring is sleeved on the connecting sleeve, the upper end of the second torsion spring is fixed with the clamping block, the lower end of the second torsion spring is abutted against the fixing frame, the indicating rotating plate can swing relative to the supporting column, the indicating plate comprises a green plate and a red plate, facing the input wiring end, the green plate.

3. A residual current circuit breaker as claimed in claim 2, characterized in that: the base is internally provided with a connecting frame used for fixing the moving contact, two ends of the connecting frame are provided with rotating shafts connected with the base, the connecting frame can swing towards the static contact relative to the base through the rotating shafts, the first torsion spring is connected with the connecting frame, the middle of the connecting frame is provided with a clamping jaw, and the bottom end of the indicating rotating plate is connected with the clamping jaw in a matched mode.

4. A residual current circuit breaker as claimed in claim 1, characterized in that: and a fixing column which is abutted against the upper cover is arranged on one side wall of the second side plate opposite to the fixing rod.

5. A residual current circuit breaker as claimed in claim 1, characterized in that: the bottom of the test button is provided with an insertion plate, and a sliding channel is arranged at a position, corresponding to the insertion plate, on the upper cover.

6. A residual current circuit breaker as claimed in claim 5, characterized in that: the bottom of the inserting plate is provided with downward supporting legs extending towards the outside, the two supporting legs are arranged oppositely, and barbs are arranged on the outer sides of the supporting legs.

7. A residual current circuit breaker as claimed in claim 6, characterized in that: the supporting legs are provided with open grooves with downward openings.