CN212625448U

CN212625448U - Luminous test button structure of leakage protection plug

Info

Publication number: CN212625448U
Application number: CN202021379318.2U
Authority: CN
Inventors: 丁卫良
Original assignee: Chashu Kean Electrical Equipment Co ltd
Current assignee: Chashu Kean Electrical Equipment Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-02-26
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to a light-emitting test button structure of a leakage protection plug, which comprises a shell, a through hole arranged on the shell, a circuit board arranged in the shell, a power indicator arranged on the circuit board and positioned right below the through hole, two test contacts arranged on the circuit board and respectively positioned at two sides of the power indicator, a spring leaf with a cantilever arranged in the shell, a light-transmitting hole arranged at the cantilever end of the spring leaf and positioned between the power indicator and the through hole, two moving contacts arranged at two sides of the cantilever end of the spring leaf, and a light-transmitting test button arranged in the through hole; the utility model integrates the test button and the power indicator without additional opening and installation of a lampshade, so that the product is more concise and elegant, the creepage clearance of the test contact can be increased, and the safety is improved; and the circuit board occupies a small area and is easy to wire.

Description

Luminous test button structure of leakage protection plug

Technical Field

The utility model relates to a switchgear field refers in particular to a luminous test button structure of earth leakage protection plug.

Background

Along with the increasing popularization of household appliances, people pay more and more attention to the use safety of the household appliances; at present, many household appliances are provided with leakage protection plugs at the input ends of power supplies so as to ensure the safety of electricity utilization of users; the front side of the leakage protection plug needs a reset button, a test button and a power indicator lamp according to national standard, so that three holes are formed in the front side of the existing leakage protection plug and are used for placing the reset button, the test button and the power indicator lamp respectively, so that more elements are arranged on the front side of the leakage protection plug, and the integral appearance is not simple and attractive; in addition, as shown in fig. 1, the test button 10 in the conventional earth leakage protection plug adopts a tact switch used in a low-voltage circuit, a low-voltage element is not easily used in a 220V circuit, and due to the influence of the height of the tact switch, a special sucking disc is required to be used in a mounting process, so that the position precision is poor, and the area of a circuit board is greatly occupied.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a luminous test button structure of earth leakage protection plug in order to overcome prior art not enough.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a luminous test button structure of earth leakage protection plug, contain the casing, the through-hole of setting on the casing, the circuit board of setting in the casing, the power indicator who sets up on the circuit board and be located the through-hole under, two sets up on the circuit board and be located the test contact of power indicator both sides respectively, the cantilever sets up the spring leaf in the casing, the light trap that sets up at spring leaf cantilever end and be located between power indicator and the through-hole, two setting are in spring leaf cantilever end both sides and respectively with two moving contacts that correspond, the setting is used for pressing spring leaf cantilever end in the through-hole and makes two moving contacts correspond the light transmissivity test button with two test contact contacts contact.

Preferably, a waterproof cover is sleeved on the light transmittance test button in the shell; the outer ring of the waterproof cover is abutted against the inner wall of the shell.

Preferably, an annular groove is further formed in the outer ring of the through hole in the inner wall of the shell; an annular flange which is propped in the annular groove is further arranged on the waterproof cover.

Preferably, a support member for abutting the outer ring of the waterproof cover on the inner wall of the shell is clamped on the inner wall of the shell.

Preferably, the light transmission test button, the waterproof cover and the annular flange are integrally formed by injection molding.

Preferably, the power indicator lamp is an LED lamp.

Preferably, the fixed end of the spring piece is fixed on the inner wall of the shell.

Preferably, the fixed end of the spring plate is welded on the circuit board.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

1. the utility model integrates the test button and the power indicator, so that the user can see the light emitted by the power indicator through the test button without additionally forming holes and installing a lampshade, and the product is more concise and elegant;

2. the utility model can increase the creepage clearance of the test contacts and improve the safety by arranging the two test contacts at the two sides of the power indicator;

3. the utility model discloses a spring leaf that the cantilever set up, circuit board area occupied is little, easily lays wire, has advantages such as the installation is simple, with low costs, long service life.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

fig. 1 is a cross-sectional view of a conventional earth leakage protection plug;

fig. 2 is a cross-sectional view of a light-emitting test button structure of the earth leakage protection plug of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural diagram of the light-emitting test button structure of the earth leakage protection plug.

FIG. 5 is a partial structure diagram of the circuit board of the present invention;

FIG. 6 is a top view of the spring plate of the present invention;

fig. 7 is another schematic structural diagram of the light-emitting test button structure of the leakage protection plug of the present invention.

Wherein: 10. a test button; 20. a housing; 21. a circuit board; 22. a through hole; 23. a light transmittance test button; 24. an annular flange; 25. a waterproof cover; 26. a support member; 27. a spring plate; 28. a power indicator light; 29. testing the contact; 30. a light-transmitting hole; 31. moving contact.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The first embodiment is as follows:

fig. 2-6 show a light-emitting test button structure of a leakage protection plug according to the present invention, which comprises a housing 20, a through hole 22 disposed on the housing 20, a circuit board 21 disposed in the housing 20, a power indicator 28 disposed on the circuit board 21 and located right below the through hole 22, two test contacts 29 disposed on the circuit board 21 and located on two sides of the power indicator 28, a spring plate 27 having a cantilever disposed in the housing 20, a light hole 30 disposed at a cantilever end of the spring plate 27 and located between the power indicator 28 and the through hole 22, two movable contacts 31 disposed on two sides of the cantilever end of the spring plate 27 and corresponding to the two test contacts 29, and a light-transmittance test button 23 disposed in the through hole 22 for pressing the cantilever end of the spring plate 27 to make the two movable contacts 31 correspond to the two test contacts 29; during the test: pressing the light transmission test button 23 to drive the cantilever end of the spring piece 27 to overcome the elastic force to move downwards, so that the two moving contacts 31 are correspondingly contacted with the two test contacts 29 to finish the test operation; when the light transmission test button 23 is released, the two movable contacts 31 move upwards under the action of the elastic force of the spring piece 27 and are separated from the two test contacts 29; due to the integrated design of the test button and the power indicator 28, a user can see the light emitted by the power indicator 28 through the light transmittance test button 23 without additionally forming a hole and installing a lampshade, so that the product is more concise and elegant; because the two test contacts 29 are arranged at the two sides of the power indicator 28, the creepage clearance of the test contacts 29 can be increased, and the safety is improved; due to the spring piece 27 arranged on the cantilever, the circuit board 21 occupies a small area, is easy to wire, and has the advantages of simple installation, low cost, long service life and the like.

Further, a waterproof cover 25 is sleeved on the light transmission test button 23 in the shell 20; the outer ring of the waterproof cover 25 abuts against the inner wall of the housing 20, thereby playing a waterproof role.

Further, an annular groove is further formed in the inner wall of the shell 20 on the outer ring of the through hole 22; the waterproof cover 25 is also provided with an annular flange 24 which is abutted in the annular groove, so that the waterproof effect is further achieved.

Furthermore, a support member 26 for abutting the outer ring of the waterproof cover 25 on the inner wall of the housing 20 is clamped on the inner wall of the housing 20, so that a fixing effect is achieved.

Further, light transmittance test button 23, buckler 25, annular flange 24 adopt the integrative injection moulding of silica gel material, can not only utilize the soft characteristic of silica gel to reach good operation and feel, and can come the production of low-cost in batches through the mould and make.

Further, the power indicator 28 is an LED lamp, which has the advantages of energy saving, long service life, low cost, etc.

Further, the fixed end of the spring plate 27 is fixed on the inner wall of the shell 20 by hot riveting, so that the processing is convenient and the structure is firm.

Example two:

as shown in fig. 7, the difference from the first embodiment is that the fixed end of the spring plate 27 is soldered on the circuit board 21, which can effectively ensure the mounting accuracy of the movable contact 31 and the test contact 29.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a luminous test button structure of earth leakage protection plug which characterized in that: contain the casing, the through-hole of setting on the casing, the circuit board of setting in the casing, the power indicator who sets up on the circuit board and be located the through-hole under, two sets up on the circuit board and be located the test contact of power indicator both sides respectively, the cantilever sets up the spring leaf in the casing, set up the light trap that just is located between power indicator and the through-hole at spring leaf cantilever end, two sets up in spring leaf cantilever end both sides and respectively with two moving contacts that test the contact corresponds, the setting is used for pressing spring leaf cantilever end in the through-hole and makes two moving contacts correspond the light transmissivity test button that contacts with two test contacts.

2. A luminous test button structure of a leakage protection plug as claimed in claim 1, wherein: a waterproof cover is sleeved on the light transmittance test button in the shell; the outer ring of the waterproof cover is abutted against the inner wall of the shell.

3. A luminous test button structure of a leakage protection plug as claimed in claim 2, wherein: an annular groove is further formed in the outer ring of the through hole in the inner wall of the shell; an annular flange which is propped in the annular groove is further arranged on the waterproof cover.

4. A luminous test button structure of a leakage protection plug as claimed in claim 3, wherein: the inner wall of the shell is clamped with a support piece used for enabling the outer ring of the waterproof cover to abut against the inner wall of the shell.

5. A luminous test button structure of a leakage protection plug as claimed in claim 4, wherein: the light transmission test button, the waterproof cover and the annular flange are integrally formed in an injection molding mode.

6. A luminous test button structure of a leakage protection plug as claimed in claim 5, characterized in that: the power indicator lamp is an LED lamp.

7. A luminous test button structure of a leakage protection plug as claimed in any one of claims 1 to 6, wherein: the fixed end of the spring piece is fixed on the inner wall of the shell.

8. A luminous test button structure of a leakage protection plug as claimed in any one of claims 1 to 6, wherein: the fixed end of the spring piece is welded on the circuit board.