CN217114256U

CN217114256U - Test mechanism and circuit breaker

Info

Publication number: CN217114256U
Application number: CN202123009468.1U
Authority: CN
Inventors: 黄燮云; 周文; 张强
Original assignee: Hangzhou Taimu Electrical Co ltd
Current assignee: Hangzhou Taimu Electrical Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-08-02
Anticipated expiration: 2031-11-30

Abstract

The application discloses accredited testing organization and circuit breaker. The test mechanism includes: the button, the base, the torsion spring and the contact rod; the button is installed in the direction mounting hole of circuit breaker shell, the direction mounting hole is injectd the direction of pressing of button, torsion spring's middle part is installed through the pivot on the base, torsion spring's first end joint is in on the button, torsion spring's second end with the base is all installed in the circuit breaker shell, the contact lever is fixed on the base, just the contact lever is located the button below. The technical problem that the structure of the testing mechanism is large and the occupied space is large in the related art is solved.

Description

Test mechanism and circuit breaker

Technical Field

The application relates to the technical field of electrical equipment, in particular to a testing mechanism and a circuit breaker.

Background

A circuit breaker (english name: circuit-breaker) refers to a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and closing, carrying, and opening/closing a current under an abnormal circuit condition within a prescribed time. 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. Furthermore, no parts need to be changed after breaking the fault current.

In order to test the automatic circuit breaking function of short circuit or electric leakage, the circuit breaker is generally provided with a testing mechanism for connecting a circuit board, but the testing mechanism in the related art is larger than the circuit breaker in structure and cannot be applied to the circuit breakers with smaller overall structures.

Aiming at the problem that the structure of a testing mechanism in the circuit breaker in the related art is large, so that the occupied space is large, an effective solution is not provided at present.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides a accredited testing organization and circuit breaker to solve among the related art circuit breaker accredited testing organization structure and comparatively big lead to the great problem of occupation space.

To achieve the above object, in a first aspect, the present application provides a test mechanism.

The test mechanism according to the application comprises: the button, the base, the torsion spring and the contact rod;

the button is installed in the direction mounting hole of circuit breaker shell, the direction mounting hole is injectd the direction of pressing of button, torsion spring's middle part is installed through the pivot on the base, torsion spring's first end joint is in on the button, torsion spring's second end with the base is all installed in the circuit breaker shell, the contact lever is fixed on the base, just the contact lever is located the button below.

Optionally, a groove is formed in the lower end of the button, and the first end of the torsion spring is clamped in the groove.

Optionally, the lower extreme of button still is equipped with spacing key, be equipped with the matching on the circuit breaker shell the bellying of spacing key, so that when the button is installed when in the direction mounting hole, the bellying is right spacing key is to leaving the direction of circuit breaker shell is injectd.

Optionally, the button is provided with the limiting keys on two sides of the groove.

Optionally, a curved section and a straight section are arranged on the contact rod, the curved section is mounted on the base, a base portion is arranged on the circuit breaker housing, the straight section of the contact rod is fixed on the base portion of the circuit breaker housing through the base, and a portion, between the base and the base portion, of the straight section is exposed under the first end of the torsion spring.

Optionally, a blocking portion is disposed on the base, and the blocking portion is located below the button, so that the blocking portion limits the button to extend deep into the circuit breaker housing.

Optionally, the material of the torsion spring and the material of the contact lever both include a conductive material, the torsion spring and the contact lever are coupled to a circuit board of the circuit breaker respectively, and the button is driven to move in the guide mounting hole to drive the torsion spring to contact with or separate from the contact lever, so that the torsion spring and the contact lever are electrically connected or disconnected.

Optionally, the torsion spring and the contact lever are coupled to a circuit board of the circuit breaker by a series resistor, respectively.

In a second aspect, the present application further provides a circuit breaker including the above-mentioned test mechanism.

In an embodiment of the present application, a testing mechanism is provided, which includes: the button, the base, the torsion spring and the contact rod; the button is installed in the direction mounting hole of circuit breaker housing, the direction mounting hole is injectd the direction of pressing of button, torsion spring's middle part is installed through the pivot on the base, torsion spring's first end joint is in on the button, torsion spring's second end with the base is all installed in the circuit breaker housing, the contact arm is fixed on the base, just the contact arm is located the button below. Wherein, the button, torsion spring's second end and base are all installed on the circuit breaker shell, like this, make this accredited testing organization's structure needn't provide fixed mounting space for button and torsion spring's second end with the help of the circuit breaker shell, button, torsion spring's fixed all rely on the base in the correlation technique, the volume of base can be littleer in this application, thereby make the accredited testing organization's that this application provided whole volume can be littleer, and then solved among the correlation technique in the circuit breaker that accredited testing organization structure is bigger and lead to the great technical problem of occupation space.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic structural diagram of a testing mechanism according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of an assembly structure of a testing mechanism according to an embodiment of the present disclosure;

FIG. 3 is a schematic view illustrating another perspective structure of a testing mechanism according to an embodiment of the present disclosure;

fig. 4 is a cross-sectional view of a circuit breaker according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "provided," "connected," "secured," "mounted," and "coupled" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 4, the present embodiment provides a testing mechanism, which includes a button 1, a base 2, a torsion spring 3, and a contact rod 4;

button 1 is installed in the direction mounting hole 51 of circuit breaker housing 5, direction mounting hole 51 is injectd button 1's direction of pressing, torsion spring 3's middle part is installed through pivot 6 on the base 2, torsion spring 3's first end joint is in on the button 1, torsion spring 3's second end with base 2 is all installed in circuit breaker housing 5, contact lever 4 is fixed on the base 2, just contact lever 4 is located button 1 below.

Wherein, button 1, torsion spring 3's second end and base 2 all install on circuit breaker housing 5, like this, make this accredited testing organization's structure needn't provide fixed mounting space for button 1 and torsion spring 3's second end with the help of circuit breaker housing 5, all rely on base 2 for button 1, torsion spring 3's is fixed among the correlation technique, base 2's volume can be littleer in the application to make the accredited testing organization's that this application provided whole volume can be littleer.

Optionally, the material of the torsion spring 3 and the material of the contact rod 4 both include conductive materials, the torsion spring 3 and the contact rod 4 are coupled to a circuit board of a circuit breaker respectively, and when the button 1 is driven to move in the guide mounting hole 51, the torsion spring 3 is driven to contact with or separate from the contact rod 4, so that the torsion spring 3 and the contact rod 4 are electrically connected or disconnected.

Specifically, the driving button 1 moves downwards relative to the base 2, so that the torsion spring 3 is in contact with the contact rod 4, that is, the torsion spring 3 is electrically connected with the contact rod 4, and because the material of the torsion spring 3 and the material of the contact rod 4 both comprise conductive materials, and the torsion spring 3 and the contact rod 4 are respectively coupled with a circuit board of a circuit breaker, when the torsion spring 3 is electrically connected with the contact rod 4, a loop can be formed among the circuit board, the torsion spring 3 and the contact rod 4, so as to simulate the condition of electric leakage of the circuit board, meanwhile, the testing mechanism only comprises the button 1, the base 2, the torsion spring 3 and the contact rod 4, the structure is extremely simple, and the torsion spring 3 and the contact rod 4 are positioned between the base 2 and the button 1, so that the occupied space is extremely small, the purposes of simplifying the structure of the testing mechanism and reducing the occupied space are achieved.

Optionally, a groove 11 is formed at a lower end of the button 1, and a first end of the torsion spring 3 is clamped in the groove 11.

Specifically, through being equipped with recess 11 at the lower extreme of button 1 for torsion spring 3's first end joint is in recess 11, like this, when drive button 1 relative base 2 downstream, button 1 can drive torsion spring 3 with contact bar 4 contacts.

Optionally, the lower end of the button 1 is further provided with a limit key 12, and the circuit breaker housing is provided with a boss portion matched with the limit key 12, so that when the button 1 is installed in the guide installation hole 51, the boss portion limits the limit key 12 to a direction away from the circuit breaker housing 5.

Specifically, through being equipped with spacing key 12 at the lower extreme of button 1, and be equipped with the matching on the circuit breaker housing the bellying of spacing key 12 for torsion spring 3 applys the effort of leaving the direction of circuit breaker housing 5 to button 1 when button 1 is not pressed, in order to prevent that button 1 from popping out the circuit breaker housing, the bellying is right spacing key 12 is to leaving the direction of circuit breaker housing 5 is injectd.

Optionally, the button 1 is provided with the limiting key 12 on both sides of the groove 11.

Specifically, the limiting keys 12 are distributed on two sides of the groove 11.

Optionally, a curved section and a straight section are arranged on the contact rod 4, the curved section is installed on the base 2, a base portion 52 is arranged on the circuit breaker housing 5, the straight section of the contact rod 4 is fixed on the base portion 52 of the circuit breaker housing 5 through the base 2, and a portion of the straight section between the base 2 and the base portion 52 is exposed right below the first end of the torsion spring 3.

Specifically, in order to prevent the contact rod 4 from being too long, which makes the contact rod 4 difficult to arrange, the contact rod 4 is composed of a curved section and a straight section, the curved section is mounted on the base 2 so that the contact rod 4 can be stably fixed on the base 2, and the straight section can be overlapped on the base portion 52 so that the portion of the straight section between the base 2 and the base portion 52 is exposed right below the first end of the torsion spring 3.

Optionally, a blocking portion 21 is disposed on the base 2, and the blocking portion 21 is located below the button 1, so that the blocking portion 21 limits the button 1 to enter the breaker housing 5.

In particular, the blocking portion 21 prevents the push button 1 from being inserted too deeply into the circuit breaker housing 5, causing the torsion spring 3 to contact the contact lever 4 with too much force.

Optionally, the torsion spring 3 and the contact rod 4 are coupled to a circuit board of the circuit breaker through series resistors, respectively.

Based on the same technical conception, the application also provides a circuit breaker, which comprises the testing mechanism.

In an embodiment of the present application, a testing mechanism is provided, which includes: the button 1, the base 2, the torsion spring 3 and the contact rod 4; button 1 is installed in the direction mounting hole 51 of circuit breaker housing 5, direction mounting hole 51 is injectd button 1's direction of pressing, torsion spring 3's middle part is installed through pivot 6 on the base 2, torsion spring 3's first end joint is in on the button 1, torsion spring 3's second end with base 2 is all installed in circuit breaker housing 5, contact lever 4 is fixed on the base 2, just contact lever 4 is located button 1 below. Wherein, button 1, torsion spring 3's second end and base 2 are all installed on circuit breaker housing 5, like this, make this accredited testing organization's structure need not provide fixed mounting space for button 1 and torsion spring 3's second end with the help of circuit breaker housing 5, for button 1 in the correlation technique, torsion spring 3's fixed all relies on base 2, base 2's volume can be littleer in the application, thereby make the accredited testing organization's that this application provided whole volume can be littleer, and then solved among the correlation technique in the circuit breaker that accredited testing organization structure ratio leads to the great technical problem of occupation space.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A testing mechanism, comprising: the button, the base, the torsion spring and the contact rod;

2. The testing mechanism of claim 1, wherein a recess is provided at a lower end of the button, and a first end of the torsion spring is engaged in the recess.

3. The testing mechanism as claimed in claim 2, wherein the lower end of the button is further provided with a limit key, and the circuit breaker housing is provided with a boss portion matching the limit key, so that when the button is mounted in the guide mounting hole, the boss portion limits the limit key in a direction away from the circuit breaker housing.

4. The testing mechanism of claim 3, wherein the limit key is disposed on the button on both sides of the groove.

5. The test mechanism as claimed in claim 1, wherein the contact rod has a curved section and a straight section, the curved section is mounted on the base, the circuit breaker housing has a base portion, the straight section of the contact rod is fixed on the base portion of the circuit breaker housing through the base, and a portion of the straight section between the base and the base portion is exposed directly below the first end of the torsion spring.

6. The test mechanism as claimed in claim 1, wherein a stop is provided on the base, the stop being located below the button such that the stop limits the button from extending deep into the circuit breaker housing.

7. The test mechanism of claim 1, wherein the torsion spring and the contact lever are each coupled to a circuit board of the circuit breaker by a series resistor.

8. A circuit breaker comprising a test mechanism according to any one of claims 1 to 7.