CN211265397U - Electric leakage circuit breaker with compact structure - Google Patents

Abstract

A leakage breaker with a compact structure. The problem of current leakage circuit breaker's test button and reset button installation troublesome, the space is extravagant big is solved. The testing device comprises a shell, a contact support, a moving contact, a tripping system, a testing button for testing the leakage protection function of the circuit breaker and a reset button for resetting the circuit breaker in the leakage tripping state, wherein the moving contact is arranged on the contact support and is driven by the contact support to move, a mounting plate is arranged in the shell, and the testing button and the reset button are arranged on the mounting plate. The beneficial effects of the utility model are that, through the setting of mounting panel for test button and reset button can the integral type assembly, simple structure, compactness, and spare part is few, can not mutual interference during the assembly, convenient assembling, test button and reset button action are reliable, product long service life.

Description

Electric leakage circuit breaker with compact structure

Technical Field

The utility model relates to a residual current circuit breaker, concretely relates to compact structure's residual current circuit breaker.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their range of use. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Moreover, the fault current is not required to be changed after the fault current is cut off, and the fault current switching device is widely applied at present. Distribution of electricity is an extremely important link in the generation, transmission and use of electricity. The distribution system comprises a transformer and various high-low voltage electrical equipment, and the low-voltage circuit breaker is an electrical appliance with a large using amount.

A leakage Circuit Breaker (Residual Current Circuit Breaker), 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 residual current circuit breaker generally comprises a contact system, an arc extinguishing system, an operating mechanism, a tripping system, a shell and the like. When short circuit occurs, a magnetic field generated by large current (generally 10 to 12 times) overcomes a counterforce spring, a release pulls an operating mechanism to act, and a switch is tripped instantaneously. When the overload occurs, the current becomes large, the heating value becomes large, and the bimetallic strip deforms to a certain degree to push the mechanism to act (the larger the current is, the shorter the acting time is). The electronic type is adopted, the mutual inductor is used for collecting the current of each phase, the current is compared with a set value, and the microprocessor sends out a signal when the current is abnormal, so that the electronic release drives the operating mechanism to act. The electric leakage circuit breaker usually needs to set up test button (test button) and is used for measuring the earth leakage protection performance of circuit breaker, also needs to set up (reset button) to carry out the reseing after the electric leakage is tripped usually, but current test button and reset button all independently install on the casing alone, and the structure is comparatively complicated, and in contact system and installing support department, can influence each other during the installation for the spare part installation of product is troublesome.

SUMMERY OF THE UTILITY MODEL

The test button and the reset button installation trouble of current electric leakage circuit breaker among the solution background art, the extravagant big problem in space, the utility model provides a compact structure's electric leakage circuit breaker.

The technical scheme of the utility model is that: the utility model provides a compact structure's electric leakage circuit breaker, includes casing, contact carrier, moving contact, tripping system, is used for testing circuit breaker earth leakage protection function's test button and is used for the reset button that resets under the breaker electric leakage tripping operation state, the moving contact locate on the contact carrier and drive its motion by the contact carrier, the casing in be equipped with the mounting panel, test button and reset button all locate the mounting panel.

As an improvement of the utility model, the test button protruding shell outside, reset button be in the electric leakage trip state protruding shell outside the circuit breaker.

As a further improvement of the present invention, the housing includes a first housing and a second housing, and the mounting plate is disposed between the contact support and the inner wall of the second housing.

As a further improvement, the mounting panel be fixed in on the second casing, mounting panel and second shells inner wall mutually support and form the accommodation space that is used for holding test button, reset button, the mounting panel on be equipped with the locating plate of second shells inner wall adaptation.

As a further improvement of the utility model, the mounting panel and/or the second casing on be equipped with the direction breach that is used for holding test button, reset button.

As a further improvement, the second casing on be equipped with the articulated shaft, the articulated shaft on be equipped with the interlocking piece, the interlocking piece have when the installation with reset button looks card interlocking primary importance and the second position of unblock reset button when electric leakage is tripped.

As a further improvement, the second casing on be equipped with the locating part, reset button on be equipped with the piece that resets, reset one end and reset button inner wall offset, the other end offsets with the locating part, reset button on be equipped with and reset a limiting plate of looks adaptation.

As a further improvement, the second casing on be equipped with first connecting piece and second connecting piece, the second connecting piece have with the first state of first connecting piece phase separation and drive the second state that switches on with first connecting piece laminating mutually by test button and make the tripping system action dropout.

As a further improvement, the second casing on be equipped with the fixed axle, first connecting piece including be used for the connecting portion of wiring and with the annular cover of fixed axle looks adaptation, the annular cover on be equipped with the elasticity breach.

As a further improvement, the second casing on be equipped with location axle and setting element, location axle and setting element mutually support and form the storage tank that is used for holding second connecting piece, the storage tank be "L" type of inversion or "J" type of inversion, the one end of second connecting piece locate test button's below, test button on be equipped with the axle that presses that is used for pressing the second connecting piece.

The beneficial effects of the utility model are that, through the setting of mounting panel for test button and reset button can the integral type assembly, simple structure, compactness, and spare part is few, can not mutual interference during the assembly, convenient assembling, test button and reset button action are reliable, product long service life.

Drawings

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

Fig. 2 is a schematic diagram of the exploded structure of fig. 1.

Fig. 3 is a schematic diagram of the exploded structure of fig. 1.

Fig. 4 is a schematic diagram of the exploded structure of fig. 1.

Fig. 5 is a schematic structural view with the first housing 11 and the mounting plate 7 removed.

Fig. 6 is a schematic structural view of the second housing 12 in fig. 2.

Fig. 7 is a schematic diagram of an exploded structure at the trip system 4 of fig. 2.

Fig. 8 is a schematic view of the exploded structure in the other direction of fig. 7.

Fig. 9 is a schematic structural view of the test button 5 of fig. 2.

Fig. 10 is a schematic structural view of the reset button 6 of fig. 8.

Fig. 11 is a schematic view of the structure of the mounting plate 7 of fig. 7.

In the figure, 1, a housing; 11. a first housing; 12. a second housing; 121. a jack; 122. hinging a shaft; 123. a limiting member; 124. a fixed shaft; 125. positioning the shaft; 126. a positioning member; 127. a containing groove; 13. a first connecting member; 131. a connecting portion; 132. an annular sleeve; 133. an elastic notch; 14. a second connecting member; 2. a contact holder; 3. a moving contact; 4. a tripping system; 5. a test button; 51. pressing the shaft; 52. a lug; 6. a reset button; 61. a limiting plate; 62. an interlock hole; 63. resetting the notch; 7. mounting a plate; 71. a mounting member; 72. positioning a plate; 73. a guide notch; 74. installing a limiting part; 8. an interlock member; 9. a reset member.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2-11, the leakage circuit breaker with a compact structure includes a housing 1, a contact support 2, a moving contact 3, a tripping system 4, a test button 5 for testing the leakage protection function of the circuit breaker, and a reset button 6 for resetting the circuit breaker in the leakage tripping state, wherein the moving contact 3 is arranged on the contact support 2 and is driven by the contact support 2 to move, a mounting plate 7 is arranged in the housing 1, and the test button 5 and the reset button 6 are both arranged on the mounting plate 7. The beneficial effects of the utility model are that, through the setting of mounting panel for test button and reset button can the integral type assembly, simple structure, compactness, and spare part is few, can not mutual interference during the assembly, convenient assembling, test button and reset button action are reliable, product long service life. Specifically, the mounting plate can be fixed on the first shell and also can be fixed on the second shell.

The test button 5 protrudes out of the shell 1, and the reset button 6 protrudes out of the shell 1 when the circuit breaker is in an electric leakage tripping state. The test button protrudes out of the shell, so that the operation and the test of a user are facilitated, and the breaker is convenient to break. The reset button is matched with the interlocking piece, so that the switching-on operation is avoided under the condition that the reset button protrudes, and the switching-on of a user is prevented when a fault is not eliminated; meanwhile, the circuit can remind a user that electric leakage occurs in the circuit, and if the electric leakage is not tripped, the reset button cannot protrude.

The shell 1 comprises a first shell 11 and a second shell 12, and the mounting plate 7 is arranged between the contact support 2 and the inner wall of the second shell 12. The structure enables the test button and the reset button to be not affected by the contact support and the contact system, the test button and the reset button can not interfere with each other during assembly, the product assembly is convenient, the test button and the reset button can be installed through the installation plate, and the integrated installation is realized. The side, close to the contact support, of the mounting plate is relatively flat, so that the contact support can rotate conveniently, the mounting and breaking performance of a product cannot be influenced, the structure is simple, and the assembly is convenient.

Mounting panel 7 be fixed in on the second casing 12, mounting panel 7 and second casing 12 inner wall mutually support and form the accommodation space that is used for holding test button 5, reset button 6, mounting panel 7 on be equipped with the locating plate 72 of second casing 12 inner wall looks adaptation. The mounting panel forms the accommodation space with the inner wall of second casing is mutually supported, carries out certain protection to reset button and test button for test button, reset button and contact support, contact system do not influence each other, and in the accommodation space was all located to test button and the connecting piece that is used for testing earth leakage protection function, the security was higher. Specifically speaking, the mounting panel can realize the mounting panel and the fixed of second casing through modes such as grafting, joint, lock joint, interference fit, the mounting panel also can realize that the mounting panel is fixed in on the second casing through other parts. More specifically, the mounting plate is fixedly connected with the second housing through plugging, and of course, the mounting plate may be inserted into a hole of the second housing, or a plugging shaft extending from the second housing may be inserted into a hole of the mounting plate, or the mounting plate and the second housing may be inserted through a third component to form a plugging fit. More specifically, second casing 12 on be equipped with jack 121, mounting panel 7 on be equipped with the installed part 71 with jack 121 looks adaptation, mounting panel 7 and second casing 12 inner wall mutually support and form the accommodation space that is used for holding test button 5, reset button 6. Certainly in the actual production process, the mounting panel also can be fixed in on the first casing, and the mounting panel that is fixed in first shells inner wall mutually supports with second shells inner wall and forms the accommodation space that is used for holding test button 5, reset button 6. More specifically, the mounting plate may be fixed to the inner wall of the first housing in the same or similar manner as the mounting plate is fixed to the inner wall of the second housing.

The mounting plate 7 and/or the second shell 12 are provided with guide notches 73 for accommodating the test button 5 and the reset button 6. The arrangement of the guide notch ensures that the test button and the reset button are more stable in operation and can be reset quickly and reliably,

the second casing 12 is provided with a hinge shaft 122, the hinge shaft 122 is provided with an interlocking member 8, and the interlocking member 8 has a first position for being locked and interlocked with the reset button 6 during installation and a second position for unlocking the reset button 6 during leakage tripping. Specifically, interlocking 8 be in first position one end card in reset button 6, the other end is connected with trip system 4, more specifically says, is equipped with interlocking hole 62 on the reset button, interlocking when interlocking be in first position card in interlocking hole interlock, the interlocking be in rotate the unblock when the second position, reset button is outside the drive protrusion casing of reset (spring) this moment. In order to facilitate the rotation of the interlocking piece to be clamped into the interlocking hole, the interlocking hole can be provided with a slope guide to facilitate reliable pressing, so that the interlocking piece is interlocked with the reset button again.

Second casing 12 on be equipped with locating part 123, reset button 6 on be equipped with the piece 9 that resets, 9 one end and the 6 inner walls of reset button offset that resets, the other end offsets with locating part 123, reset button 6 on be equipped with the limiting plate 61 of locating part 123 looks adaptation. Specifically speaking, reset button on be equipped with the breach 63 that resets, the piece that resets locate in the breach that resets, more specifically speaking, the locating part also locate in the breach that resets, more specifically speaking, the locating part be the setting of "L" font or "one" font of invering, the locating part of "one" font is convenient for reset button's installation and the installation of the piece that resets. The inverted L-shaped limiting part is convenient for installation of the reset part and can also play a role in guiding the movement of the reset button. The limiting plate can limit the distance of the reset button protruding out of the shell. Specifically, the mounting plate is provided with a mounting limiting part 74, the limiting plate is arranged between the limiting part and the mounting limiting part, and the guiding limiting effect on the reset button is more reliable, so that the product is reset reliably, and the interlocking piece can be driven to act reliably.

The second shell 12 is provided with a first connecting piece 13 and a second connecting piece 14, and the second connecting piece 14 has a first state separated from the first connecting piece 13 and a second state which is driven by the test button 5 to be attached to the first connecting piece 13 to be conducted so that the tripping system 4 operates to trip. Specifically speaking, first connecting piece and second connecting piece be electrically conductive, first connecting piece, second connecting piece be connected with zero sequence transformer respectively, when the experiment button is pressed, the experiment button can drive first connecting piece and second connecting piece and contact for zero sequence transformer produces tripping signal, thereby makes tripping system move and realizes (zero sequence transformer drives tripping system and moves for prior art, does not describe here again), makes this product can carry out the test of earth leakage protection function. The test button can be reset by the second connecting piece.

The second housing 12 is provided with a fixing shaft 124, the first connecting member 13 includes a connecting portion 131 for connecting wires and an annular sleeve 132 adapted to the fixing shaft 124, and the annular sleeve 132 is provided with an elastic notch 133. The installation of the first connecting piece of being convenient for is arranged to the elasticity breach, and the wiring is convenient for in the setting of connecting portion. The first connecting piece and the second connecting piece can be integrally formed by adopting a conductive material.

The second housing 12 is provided with a positioning shaft 125 and a positioning member 126, the positioning shaft 125 and the positioning member 126 are mutually matched to form a containing groove 127 for containing the second connecting member 14, the containing groove 127 is in an inverted L shape or an inverted J shape, one end of the second connecting member 14 is arranged below the test button 5, and the test button 5 is provided with a pressing shaft 51 for pressing the second connecting member 14. The structure is convenient for the installation of the second connecting piece, and simultaneously can provide the restoring force of the test button through the second connecting piece, and the second connecting piece is arranged below the test button, so that the test button can be pressed conveniently. The second connecting piece is convenient for reliably press by the arrangement of the pressing shaft, the pressing is reliable, and the safety performance is higher. The test button is provided with a lug 52, and the lug can limit the test button.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims (10)

1. The leakage circuit breaker with a compact structure is characterized by comprising a shell (1), a contact support (2), a moving contact (3), a tripping system (4), a test button (5) for testing the leakage protection function of the circuit breaker and a reset button (6) for resetting the circuit breaker in the leakage tripping state, wherein the moving contact (3) is arranged on the contact support (2) and is driven to move by the contact support (2), a mounting plate (7) is arranged in the shell (1), and the test button (5) and the reset button (6) are both arranged on the mounting plate (7).

2. A compact residual current circuit breaker as claimed in claim 1, characterized in that said test button (5) protrudes outside the casing (1), and said reset button (6) protrudes outside the casing (1) when the circuit breaker is in the residual current tripped condition.

3. A compact residual current circuit breaker as claimed in claim 1, characterized in that the housing (1) comprises a first housing (11) and a second housing (12), the mounting plate (7) being arranged between the contact carrier (2) and an inner wall of the second housing (12).

4. A compact residual current circuit breaker according to claim 3, characterized in that said mounting plate (7) is fixed to the second housing (12), said mounting plate (7) and the inner wall of the second housing (12) are mutually matched to form a receiving space for receiving the test button (5) and the reset button (6), said mounting plate (7) is provided with a positioning plate (72) adapted to the inner wall of the second housing (12).

5. A compact residual current circuit breaker according to claim 4, characterized in that the mounting plate (7) and/or the second housing (12) are provided with guide notches (73) for receiving the test button (5) and the reset button (6).

6. A compact residual current circuit breaker as claimed in claim 3, characterized in that said second casing (12) is provided with a hinge (122), said hinge (122) being provided with an interlocking member (8), said interlocking member (8) having a first position of blocking with said reset button (6) when installed and a second position of unblocking said reset button (6) when a leakage is tripped.

7. A compact electric leakage breaker according to claim 3, characterized in that said second housing (12) is provided with a limiting member (123), said reset button (6) is provided with a reset member (9), one end of said reset member (9) abuts against the inner wall of said reset button (6), the other end abuts against said limiting member (123), said reset button (6) is provided with a limiting plate (61) adapted to said limiting member (123).

8. A compact residual current circuit breaker according to claim 3, characterized in that said second housing (12) is provided with a first connecting member (13) and a second connecting member (14), said second connecting member (14) has a first state separated from said first connecting member (13) and a second state driven by said test button (5) to be in contact with said first connecting member (13) for releasing said tripping system (4).

9. A compact residual current circuit breaker as claimed in claim 8, characterized in that said second housing (12) is provided with a fixed shaft (124), said first connecting member (13) comprises a connecting portion (131) for connecting a line and an annular sleeve (132) adapted to said fixed shaft (124), said annular sleeve (132) being provided with an elastic notch (133).

10. The residual current circuit breaker with a compact structure according to claim 8, characterized in that the second housing (12) is provided with a positioning shaft (125) and a positioning member (126), the positioning shaft (125) and the positioning member (126) are mutually matched to form a containing groove (127) for containing the second connecting member (14), the containing groove (127) is in an inverted L shape or an inverted J shape, one end of the second connecting member (14) is arranged below the test button (5), and the test button (5) is provided with a pressing shaft (51) for pressing the second connecting member (14).

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