CN106531496A - Contact life state indication system - Google Patents

Abstract

The invention provides a contact life state indication system, which includes a housing, a moving contact bracket is arranged inside the housing, a through hole is arranged on the housing, the moving contact bracket extends to the through hole, and is connected with the through hole. Three kinds of marks are set on the moving contact bracket at the corresponding position of the through hole, respectively indicating: the contact is closed, the contact is disconnected, and the contact wears to the limit and needs to be replaced. The three signs adopt three colors of yellow, red and green. Red indicates that the contact is closed, green indicates that the contact is disconnected, and yellow indicates that the contact is worn out to the limit and needs to be replaced. The device provided by the invention overcomes the deficiencies of the prior art, and enables the status of the contacts to be indicated without affecting product performance. When the yellow mark appears, it indicates that the contacts are worn to the limit and the circuit breaker must be replaced to avoid potential safety hazards. . The device has a simple structure and low cost, can effectively indicate the loss status of the dynamic and static contacts of the circuit breaker, is convenient for daily maintenance, and eliminates potential safety hazards.

Description

A Contact Life Status Indication System

technical field

The invention relates to a life state indication system, in particular to a contact life state indication system for electrical switchgear.

Background technique

The electrical switching device is used to connect and break the electrical circuit. Every time the circuit is connected and disconnected with load, the dynamic and static contacts of the electrical switching device will have a certain degree of loss. If the loss of the dynamic and static contacts is too much, the electrical switching device will fail. To meet the requirements of use, especially the circuit breaker products, its short circuit and overload protection functions will not be satisfied, there is a great potential safety hazard, and it should be replaced in time.

At present, the dynamic and static contacts of circuit breaker products are all sealed in the housing, and the actual state cannot be seen intuitively. If the contact wears too much, it cannot be found in time, and there will be certain safety hazards. If the circuit breaker is replaced before the expiration date, it will cause a waste of resources.

Contents of the invention

The technical problem to be solved by the invention is how to simply and effectively indicate the loss status of the moving and static contacts of the circuit breaker.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is to provide a contact life state indication system, which includes a housing, and a moving contact bracket is arranged inside the housing, and the feature is that: the housing is provided with a through hole, The moving contact bracket extends to the through hole, and three markings are set on the moving contact bracket corresponding to the through hole, respectively indicating: contact closed, contact disconnected, contact wear to the limit and needs to be replaced.

Preferably, a transparent cover serving as a viewing window is provided on the through hole.

Preferably, a transparent cover serving as a viewing window is provided on the through hole.

Preferably, the three markings adopt three colors of yellow, red and green. Red indicates that the contact is closed, green indicates that the contact is disconnected, and yellow indicates that the contact is worn out to the limit and needs to be replaced.

Preferably, in the closed position of the circuit breaker, the red mark is displayed through the through hole; in the open position of the circuit breaker, the green mark is displayed through the through hole; Via holes are highlighted in yellow.

The contact life state indication system provided by the present invention sets a through hole as a viewing window on the front of the housing, and indicates the position of the moving contact by changing the position of the moving contact bracket when the switch is closed, and makes a mark on the moving contact bracket, preferably red Three colors of yellow and green are marked: red indicates that the contact is closed; green indicates that the contact is disconnected; yellow is used as a warning, indicating that the contact has worn out to the limit and needs to be replaced.

The device provided by the invention overcomes the deficiencies of the prior art. Without affecting the performance of the product, the state of the contact can be indicated. When the yellow mark appears, the circuit breaker can be replaced to avoid potential safety hazards. The device has a simple structure and low cost, can effectively indicate the loss status of the dynamic and static contacts of the circuit breaker, is convenient for daily maintenance, and eliminates potential safety hazards.

Description of drawings

FIG. 1 is an external schematic diagram of the contact life status indication system provided in this embodiment;

FIG. 2 is an internal schematic diagram of the contact life status indication system provided by this embodiment;

Figure 3 is a schematic diagram of three types of markings on the moving contact bracket.

detailed description

Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Figure 1 and Figure 2 are respectively external and internal schematic diagrams of the contact life status indication system provided by this embodiment, the contact life status indication system includes a housing 1, and a movable contact bracket 2 is installed inside the housing 1; A through hole 3 is provided on the front of the housing 1, and the through hole 3 can be covered with a transparent cover as a window; the moving contact bracket 2 is extended to the through hole 3, and the moving contact at the position corresponding to the through hole 3 Three markings are made on the bracket 2, such as yellow Y, red R, and green G set in sequence, as shown in Figure 3 .

The location of the red mark is: when the circuit breaker is closed, the position corresponding to the through hole on the moving contact bracket; the position of the green mark is: the position corresponding to the through hole on the moving contact support when the circuit breaker is opened; The location of the yellow mark is: when the moving and static contacts of the circuit breaker are worn out to the extent that affects the use of the product, the position corresponding to the through hole on the moving contact bracket.

In the closed position of the circuit breaker, the red mark can be seen through the through hole; in the open position of the circuit breaker, the green mark can be seen through the through hole; when the moving and static contacts are worn out, the contact position of the moving and static contacts will change , causing the position of the moving contact bracket to change in the closed state. When the loss reaches a certain level, you can see the yellow mark. At this time, the loss of the moving and static contacts has reached the level that affects the use of the product, and the product can be carried out. replacement to avoid accidents.

The main structure of the contact life state indication system provided in this embodiment is only partially improved on the casing and the moving contact bracket, so that it can simply and effectively indicate the loss status of the moving and static contacts of the circuit breaker, and realize the cost reduction. Low, easy to popularize and use on a large scale.

Claims (4)

1. A contact life status indication system, comprising a housing (1), the housing (1) is provided with a moving contact bracket (2), characterized in that: the housing (1) is provided with a through hole (3), the moving contact bracket (2) extends to the through hole (3), and three kinds of marks are set on the moving contact bracket (2) at the position corresponding to the through hole (3), respectively indicating: contact Closing, contact opening, contact wear to the limit need to be replaced. 2. A contact life status indication system according to claim 1, characterized in that: said through hole (3) is provided with a transparent cover plate used as a viewing window. 3. A contact life state indication system as claimed in claim 1, characterized in that: said three signs adopt three colors of yellow, red and green, red indicates that the contact is closed, green indicates that the contact is open, Yellow indicates that the contacts are worn out to the limit and need to be replaced. 4. A contact life state indication system according to claim 3, characterized in that: at the closing position of the circuit breaker, a red mark is displayed through the through hole (3); The hole (3) shows a green mark; when the dynamic and static contacts are worn out to the limit, the through hole (3) shows a yellow mark.