CN217333989U - Circuit breaker testing device and circuit breaker - Google Patents

Abstract

The utility model belongs to the technical field of the circuit breaker, a circuit breaker testing device and circuit breaker are disclosed. The testing device comprises a base, a testing button arranged on the base, a control panel arranged in the base, a conducting strip and an elastic piece; the conducting strip sets up in the mounting groove of base, and test button can drive the one end and the elastic component contact of conducting strip, and the elastic component is connected with the control panel electricity, and the other end of conducting strip passes through the wire and is connected with the control panel electricity. The utility model discloses in, through setting up the elastic component, when the press test button, make conducting strip and elastic component contact, the elastic component other end is direct to be connected with the control panel electricity, has saved the wire connection here, has reduced connecting wire's in the assembling process quantity, has facilitated automated production, has promoted assembly efficiency.

Description

Circuit breaker testing device and circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field especially relates to a circuit breaker test device and circuit breaker.

Background

The existing residual current circuit breaker is generally provided with a leakage current test device and is integrated on one side of the circuit breaker, the function of a leakage tripping mechanism of the residual current circuit breaker is regularly detected to be intact, a test button is pressed to enable a detection circuit to be switched on, leakage current is generated inside a simulation main circuit, and a control mechanism is used for controlling a tripper to act to enable the circuit breaker to be switched off. When the breaker is normally opened, the leakage tripping mechanism of the breaker is indicated to be normal in function; when the breaker can not be normally opened, the function of the electric leakage tripping mechanism of the breaker is abnormal, and the fault needs to be timely eliminated or a new breaker needs to be replaced.

In current leakage current test device return circuit, adopt the wire welding in experimental return circuit usually, because the wire belongs to the flexible body, on automatic assembly production line, the difficult accurate positioning that realizes of wire connection often needs artifical adjustment, and more wire connection structure both extravagant cost has influenced production efficiency's promotion again to further influence the automation level of circuit breaker production.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a circuit breaker testing device and circuit breaker for promote assembly efficiency, and further promote the automation level of circuit breaker production.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a circuit breaker test device, include the base, set up in test button on the base and locate control panel in the base, still including set up in conducting strip and elastic component in the base, the conducting strip set up in the mounting groove of base, test button can drive the one end of conducting strip with the elastic component contact, the elastic component with the control panel electricity is connected, the other end of conducting strip pass through the wire with the control panel electricity is connected.

As a circuit breaker test device's preferred scheme, the elastic component is the torsional spring, be equipped with the arch in the base, the torsional spring cover is established protruding, the first pin end butt of torsional spring in on the base, the second pin end of torsional spring with the control panel electricity is connected.

As a preferred scheme of the circuit breaker testing device, a first pad hole is formed in the control panel, and the second pin end of the torsion spring penetrates through the first pad hole and is welded with the first pad hole.

As a preferred scheme of the circuit breaker testing device, the circuit breaker testing device further comprises a coil assembly, wherein an action coil is arranged on the coil assembly, a first terminal of the action coil is welded with the third pad hole or the first pad hole of the control board, and a second terminal of the action coil is welded with the fourth pad hole of the control board.

As a preferred scheme of the circuit breaker testing device, the conducting strip comprises an oblique portion and a fixing portion, the oblique portion is used for being in contact with the elastic piece, and the fixing portion is electrically connected with the second pad hole of the control panel through the lead.

As a circuit breaker testing arrangement's preferred scheme, the bottom of experimental button is equipped with the scarf, the scarf with the inclination phase-match of slant portion, the scarf can drive the slant portion with the one end butt of elastic component.

As a preferred scheme of the circuit breaker testing device, a plurality of welding openings are arranged on the control panel, and a separation groove is arranged between every two adjacent welding openings.

As a preferred scheme of circuit breaker testing arrangement, circuit breaker testing arrangement still includes zero sequence transformer, zero sequence transformer passes through the weld bond with the control panel electricity is connected, the wire passes zero sequence transformer's coil hole, zero sequence transformer cover is established on the major loop for detect the residual current of major loop, and with the signal of telecommunication transmission of residual current extremely the control panel.

As a circuit breaker testing arrangement's preferred scheme, the cover is equipped with the spring on the test button, spring one end with test button butt, the other end with the base butt, the spring enables test button resets.

A circuit breaker includes the circuit breaker testing arrangement of any one of above-mentioned scheme.

Has the advantages that:

the utility model discloses in, through the one end contact of test button drive conducting strip and elastic component, the other end and the control panel electricity of elastic component are connected, and the conducting strip is connected with the control panel electricity, when test button drive conducting strip takes place deformation and contacts with the elastic component, experimental return circuit switch-on. Due to the arrangement of the elastic piece, the adoption of a wire connection mode is avoided, the number of wires is reduced, the assembly efficiency is improved, and the automation level of circuit breaker production is improved to a certain extent; in addition, when the conducting strip extrudes the elastic piece, the elastic piece is deformed to a certain extent under a certain pre-pressure, so that the contact parts are extruded mutually, and a certain contact pressure can be ensured at the butting part, thereby reducing the contact resistance and ensuring the smooth connection of a test loop.

Drawings

Fig. 1 is a schematic structural diagram of a front view angle of a circuit breaker testing apparatus provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a front view angle of a test loop of a circuit breaker testing apparatus provided by an embodiment of the present invention;

fig. 3 is an isometric view of a test loop of a circuit breaker testing apparatus provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a base and a control panel provided in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a torsion spring provided in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a coil assembly according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a conductive sheet and a wire connection provided by an embodiment of the present invention.

In the figure:

100. a base; 110. a protrusion; 120. mounting grooves;

200. a test button; 210. a spring; 220. a chamfer plane;

300. a wire;

400. a control panel; 410. a first pad hole; 420. a second pad hole; 430. a third pad hole; 440. a fourth pad hole; 450. welding a welding opening; 460. separating the grooves;

500. a conductive sheet; 510. an oblique portion; 520. a fixed part;

600. an elastic member; 611. a first pin end; 612. a second pin end;

700. a coil assembly; 710. a first terminal; 720. a second terminal;

800. a zero sequence transformer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Referring to fig. 1 to 4, in the present embodiment, the circuit breaker testing apparatus includes a base 100, a test button 200 disposed on the base 100, a wire 300, a control board 400 disposed in the base 100, a conductive sheet 500, and an elastic member 600. The base 100 is a non-metal shell and has good heat resistance and flame retardance, and the base 100 provides reliable and stable support for an internal test device; the test button 200 is a non-metal part, the head of the test button 200 is exposed out of the base 100 and is used for manual pressing touch control of an operator, and the bottom of the test button extends into the mounting hole of the base 100 and can move downwards when the operator presses the test button to trigger an internal test loop to be connected; the control board 400 is disposed in a cavity in the base 100, and the control board 400 is used for identifying the leakage current signal and controlling the trip mechanism. The conductive sheet 500 is installed in the installation groove 120 of the base 100, and particularly, the groove width of the installation groove 120 is slightly greater than the thickness of the conductive sheet 500, ensuring that the conductive sheet 500 is stably installed in the installation groove 120. The test button 200 can drive one end of the conductive sheet 500 to contact the elastic member 600, and specifically, the conductive sheet 500 includes a slant portion 510 and a fixing portion 520, and the test button 200 can drive the slant portion 510 to contact one end of the elastic member 600. The elastic member 600 is electrically connected to the first pad hole 410 of the control plate 400, and specifically, the control plate 400 is provided with the first pad hole 410, and one end of the elastic member 600 is electrically connected to the first pad hole 410. The other end of the conductive sheet 500 is electrically connected to the second pad hole 420 of the control board 400 through the wire 300, specifically, the second pad hole 420 is provided on the control board 400, and the fixing part 520 of the conductive sheet 500 is electrically connected to the second pad hole 420 through the wire 300. When the test button 200 is pressed, the test button 200 touches and deforms the conductive sheet 500, and is always fixed in the mounting groove 120 due to the limitation of the fixing part 520 by the mounting groove 120, and when the conductive sheet 500 contacts the elastic member 600, the conductive sheet 500, the elastic member 600, the wire 300, and the control board 700 form a closed test circuit together. In this embodiment, by electrically connecting the elastic member 600 to the control board 700, a connection wire is not required to be provided at this position, the number of wires used is reduced, the assembly efficiency is improved, and the automation level of the circuit breaker production is further improved.

Optionally, the elastic member 600 is a torsion spring, a protrusion is disposed in the base 100, and the torsion spring is sleeved on the protrusion 110, referring to fig. 2-5 and fig. 7, the torsion spring includes a first lead end 611, and the first lead end 611 abuts against the base 100. When the test button 200 is pressed downwards, the bottom of the test button 200 touches and deforms the oblique portion 510 of the conductive sheet 500, and further, as the oblique portion 510 finally contacts with the torsion spring along with the deformation of the oblique portion 510, when the oblique portion 510 further deforms, the oblique portion 510 can apply a certain force to the torsion spring and make the torsion spring receive a certain pre-pressure. The pre-pressure can ensure that the contact position of the torsion spring and the oblique portion 510 has a certain contact pressure, so that the contact resistance is reduced, and the test loop is smoothly conducted.

Referring to fig. 7, preferably, the end of the inclined portion 510 is provided with a contact arc surface, the contact arc surface is bent toward a direction close to the elastic member 600, the contact arc surface can contact the elastic member 600, and the contact arc surface is a partial arc surface or a partial elliptical arc surface. In this embodiment, the contact area is enlarged by the contact between the contact arc surface and the torsion spring, and the contact between the inclined portion 510 and the torsion spring is more sufficient, so as to ensure smooth conduction of the test loop.

Referring to fig. 4 and 5, in the present embodiment, the torsion spring further includes a second pin end 612, an end portion of the second pin end 612 extends along an axial direction of the torsion spring and penetrates through the first pad hole 410, and the second pin end 612 is connected to the first pad hole 410 by welding. Specifically, the second lead ends 612 are soldered to the first pad holes 410, so that the control board 400 and the torsion spring are electrically connected stably.

Referring to fig. 6, in the present embodiment, the circuit breaker testing apparatus further includes a coil assembly 700, the coil assembly 700 is provided with an action coil, the action coil includes a first terminal 710 and a second terminal 720, and the first terminal 710 of the action coil is welded to the third pad hole 430 or the first pad hole 410 of the control board 400. Specifically, the first terminal 710 is electrically connected to the second pin end 612 of the torsion spring, and further, the first terminal 710 is inserted into the third pad hole 430 of the control board 400 and welded to the third pad hole 430, so that the third pad hole 430 and the first pad hole 410 are welded together; or the first terminal 710 is directly soldered in the first pad hole 410 and soldered to the second lead end 612 of the torsion spring. The second terminal 720 is inserted into the fourth pad hole 440 of the control board 400 and is welded to the fourth pad hole 440. When the test loop is switched on, the control board 400 can control the coil assembly 700 to act, and the coil assembly 700 drives the tripping mechanism inside the circuit breaker to act, so that the circuit breaker is switched off. The technical personnel in the field can understand that the action coil is connected in the test circuit, when the test circuit is switched on, the action coil has current passing, and the action coil drives the armature inside the action coil to move through the magnetic effect, so that the tripping mechanism inside the circuit breaker is driven to act, and the circuit breaker is switched off; the tripping mechanism referred to in the present embodiment can be selected from existing circuit breaker tripping mechanisms.

Referring further to fig. 1-3, a plurality of bonding pads 450 are disposed on the control board 400, and a separation groove 460 is disposed between adjacent bonding pads 450, wherein the separation groove 460 is used to increase an electrical gap between adjacent bonding pads 450. In the present embodiment, there are 4 craters 450, 2 of which are used to connect the main power lines.

In this embodiment, the circuit breaker testing apparatus further includes a zero sequence transformer 800, the zero sequence transformer 800 is electrically connected to the control board 400 through the craters 450, specifically, the incoming line end and the outgoing line end of the zero sequence transformer 800 are connected to the two remaining craters 450; the zero sequence transformer 800 is sleeved on the main loop, and the wire 300 passes through a coil hole of the zero sequence transformer 800. The zero sequence transformer 800 is used for detecting the residual current of the main circuit and transmitting the electric signal of the residual current to the control board 400. When the test loop is switched on, because the test loop is divided into currents in the main loop, the currents are used for simulating leakage current of the circuit breaker, the control board 400 receives the current signals, the trigger coil assembly 700 drives a tripping mechanism inside the circuit breaker to trip so as to enable the circuit breaker to be switched off, and when the circuit breaker is normally switched off, the function of the leakage tripping mechanism of the circuit breaker is normal; when the breaker can not normally open the brake, the leakage tripping mechanism of the breaker is abnormal in function, and the fault needs to be timely eliminated or a new breaker needs to be replaced.

Optionally, the test button 200 is sleeved with a spring 210, one end of the spring 210 abuts against the test button 200, the other end abuts against the base 100, and the spring 210 can reset the test button 200, specifically, when the test button 200 is pressed, the spring 210 is compressed, and when the test button 200 is released, the spring 210 recovers the shape and resets the test button 200.

Referring to fig. 2, optionally, the bottom of the test button 200 is provided with a chamfer 220, the chamfer 220 matches with the inclination angle of the inclined portion 510, the test button 200 is pressed, the chamfer 220 is attached to the inclined portion 510, and the inclined portion 510 abuts against one end of the elastic member 600. Specifically, the initial positions of the chamfer 220 and the oblique portion 510 are kept parallel, so that when the test button 200 is pressed down, the chamfer 220 and the oblique portion 510 have a certain contact area, the oblique portion 510 is stably deformed, and after the test button 200 is reset, the deformation of the oblique portion 510 is stably recovered, and the mechanical and electrical service life of the conductive sheet 500 is ensured.

In this embodiment, still relate to a circuit breaker, this circuit breaker includes foretell circuit breaker test device.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a circuit breaker testing device, include base (100), set up in test button (200) on base (100) and locate control panel (400) in the base, its characterized in that still including set up in conducting strip (500) and elastic component (600) in base (100), conducting strip (500) set up in mounting groove (120) of base (100), test button (200) can drive the one end of conducting strip (500) with elastic component (600) contact, elastic component (600) with control panel (400) electricity is connected, the other end of conducting strip (500) pass through wire (300) with control panel (400) electricity is connected.

2. The circuit breaker testing device according to claim 1, wherein the elastic member (600) is a torsion spring, a protrusion (110) is disposed in the base (100), the torsion spring is sleeved on the protrusion (110), a first pin end (611) of the torsion spring abuts against the base (100), and a second pin end (612) of the torsion spring is electrically connected to the control board (400).

3. The circuit breaker testing apparatus according to claim 2, wherein a first pad hole (410) is disposed on the control board (400), and the second pin end (612) of the torsion spring is inserted into the first pad hole (410) and welded to the first pad hole (410).

4. The circuit breaker testing apparatus according to claim 3, further comprising a coil assembly (700), wherein the coil assembly (700) is provided with an actuating coil, a first terminal (710) of the actuating coil is welded to the third pad hole (430) or the first pad hole (410) of the control board (400), and a second terminal (720) of the actuating coil is welded to the fourth pad hole (440) of the control board (400).

5. The circuit breaker testing apparatus according to claim 1, wherein the conductive sheet (500) comprises an inclined portion (510) and a fixed portion (520), the inclined portion (510) is configured to contact the elastic member (600), and the fixed portion (520) is electrically connected to the second pad hole (420) of the control board (400) through the conductive wire (300).

6. A circuit breaker testing device according to claim 5, characterized in that the bottom of the test button (200) is provided with a chamfer (220), and the chamfer (220) matches with the inclination angle of the slant portion (510).

7. The circuit breaker testing apparatus according to claim 1, wherein a plurality of welding openings (450) are provided on the control board (400), and a separation groove (460) is provided between adjacent welding openings (450).

8. The circuit breaker testing device according to claim 7, further comprising a zero sequence transformer (800), wherein the zero sequence transformer (800) is electrically connected to the control board (400) through the welding opening (450), the wire (300) passes through a coil hole of the zero sequence transformer (800), and the zero sequence transformer (800) is sleeved on the main loop to detect the residual current of the main loop and transmit the electrical signal of the residual current to the control board (400).

9. The circuit breaker testing device according to claim 1, wherein a spring (210) is sleeved on the test button (200), one end of the spring (210) is abutted with the test button (200), the other end of the spring is abutted with the base (100), and the spring (210) can reset the test button (200).

10. A circuit breaker comprising the circuit breaker testing apparatus of any one of claims 1-9.

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