CN210897170U - Button structure of residual current operated circuit breaker - Google Patents

Abstract

The utility model discloses a residual current operated circuit breaker button structure, include: the test device comprises a shell, a plastic test button for testing a loop, a transmission piece capable of being pushed by the plastic test button and a test spring for pushing the plastic test button to reset through the transmission piece; the shell is provided with a through hole for the plastic test button to pass through; the bottom end of the plastic test button is positioned in the shell; the top end of the plastic test button is positioned outside the shell; the transmission part is arranged below the plastic test button; the plastic test button is formed with a first projection, a second projection and a third projection which hook the inner wall of the housing after the plastic test button is reset so that the plastic test button is horizontal. The utility model discloses an useful part lies in, effectively avoids the plastics test button to expose the slope of circuit breaker housing.

Description

Button structure of residual current operated circuit breaker

Technical Field

The utility model relates to a residual current operated circuit breaker, concretely relates to residual current operated circuit breaker button structure.

Background

The residual current operated circuit breaker is a terminal protection electric appliance which is most widely used in a building electric terminal distribution device. The plastic test button is an important part of the test circuit. The button structure acts indirectly on the plastic test button through the transmission element for the test spring. Because the effort of experimental spring acts on the one end of driving medium, it is out of level when driving medium resets finally to make the button expose the shell of circuit breaker also nonparallel.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a can effectively avoid the plastic test button to expose the residual current operated circuit breaker button structure of circuit breaker housing slope.

In order to achieve the above object, the utility model adopts the following scheme:

a residual current operated circuit breaker button arrangement comprising: the test device comprises a shell, a plastic test button for testing a loop, a transmission piece capable of being pushed by the plastic test button and a test spring for pushing the plastic test button to reset through the transmission piece; the shell is provided with a through hole for the plastic test button to pass through; the bottom end of the plastic test button is positioned in the shell; the top end of the plastic test button is positioned outside the shell; the transmission part is arranged below the plastic test button; the plastic test button is provided with a first lug, a second lug and a third lug which are hooked on the inner wall of the shell after the plastic test button is reset so as to enable the plastic test button to be horizontal; the bottoms of the first lug, the second lug and the third lug are respectively provided with a guide inclined plane which is used for contacting with the hole wall of the through hole to extrude the plastic test button to deform so that the bottom end of the plastic test button penetrates into the shell from the outside of the shell through the through hole.

Further, the plastic test button defines a transverse axis, a longitudinal axis and a vertical axis which are perpendicular to each other; the plastic test button is pressed by a user to move along a vertical axis relative to the shell; in the direction of the transverse axis, the acting force of the test spring acts on one end of the transmission part; the second lug and the third lug are positioned on two sides of the plastic test button in the direction of the longitudinal axis; in the transverse axis direction, the first projection is located at one end of the plastic test button. Further, first lug, second lug and third lug all set up in the bottom of plastics test button.

Furthermore, the top surfaces of the first bump, the second bump and the third bump are flush; the inner wall surface of the shell comprises a first plane which is contacted with the top surfaces of the first lug, the second lug and the third lug; a second plane which is contacted with the bottom of the plastic test button is formed at the top of the transmission piece; the first plane is parallel to the second plane. Further, the second plane and the first plane are both perpendicular to the vertical axis.

A residual current operated circuit breaker button arrangement comprising: the test device comprises a shell, a plastic test button for testing a loop, a transmission piece capable of being pushed by the plastic test button and a test spring for pushing the plastic test button to reset through the transmission piece; the shell is provided with a through hole for the plastic test button to pass through; the bottom end of the plastic test button is positioned in the shell; the top end of the plastic test button is positioned outside the shell; the transmission part is arranged below the plastic test button; the plastic test button is provided with a first lug, a second lug and a third lug which are hooked on the inner wall of the shell after the plastic test button is reset so as to enable the plastic test button to be horizontal; the plastic test button is defined with a transverse axis, a longitudinal axis and a vertical axis which are mutually perpendicular; the plastic test button is pressed by a user to move along a vertical axis relative to the shell; in the direction of the transverse axis, the acting force of the test spring acts on one end of the transmission part; the second lug and the third lug are positioned on two sides of the plastic test button in the direction of the longitudinal axis; in the transverse axis direction, the first projection is located at one end of the plastic test button.

Furthermore, the top surfaces of the first bump, the second bump and the third bump are flush; the bottoms of the first lug, the second lug and the third lug are respectively provided with a guide inclined plane which is used for contacting with the hole wall of the through hole to extrude the plastic test button to deform so that the bottom end of the plastic test button penetrates into the shell from the outside of the shell through the through hole. Further, first lug, second lug and third lug all set up in the bottom of plastics test button.

Further, the inner wall surface of the housing includes a first plane surface contacting top surfaces of the first projection, the second projection, and the third projection; a second plane which is contacted with the bottom of the plastic test button is formed at the top of the transmission piece; the first plane is parallel to the second plane. Further, the first plane and the second plane are both perpendicular to the vertical axis.

The utility model discloses an useful part lies in, makes effectively to avoid plastics test button to expose the circuit breaker housing slope through add the lug structure at plastics test button. Can pass through the through-hole extrusion with the plastics test button from the outside and enter into the inside installation of accomplishing of shell when the last step of equipment residual current operated circuit breaker, the manufacturability is good, need not install the plastics test button before merging the shell.

Drawings

Fig. 1 is a schematic diagram of a residual current operated circuit breaker of the present invention;

fig. 2 is a schematic diagram of the residual current operated circuit breaker of fig. 1 with a portion of the housing open;

fig. 3 is a schematic view of the plastic test button, transmission and test spring of the residual current operated circuit breaker of fig. 2;

FIG. 4 is a schematic diagram of another perspective of the structure of FIG. 3;

FIG. 5 is an exploded view of the structure of FIG. 3;

fig. 6 is an exploded view from another perspective of the structure of fig. 3.

The residual current operated circuit breaker comprises a residual current operated circuit breaker 100, a shell 10, an upper shell 11, a lower shell 12, a through hole 10a, a first plane 10b, a plastic test button 20, a first bump 21, a second bump 22, a third bump 23, a transmission piece 30, a second plane 31, a test spring 40, a transverse axis 101, a longitudinal axis 102 and a vertical axis 103.

Detailed Description

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

As shown in fig. 1 to 6, the residual current operated circuit breaker push button arrangement is part of a residual current operated circuit breaker 100. Residual current operated circuit breaker button structure includes: housing 10, plastic test button 20, transmission 30 and test spring 40.

The use of the plastic test button 20 for testing the circuit is an important part of a residual current operated circuit breaker. The transmission member 30 can be pushed by the plastic test button 20. The test spring 40 urges the plastic test button 20 to reset via the transmission 30. The transmission member 30 is disposed below the plastic test button 20. The housing 10 is formed with a through-hole 10a through which the plastic test button 20 passes from the inside of the housing 10 to the outside of the housing 10. The housing 10 includes an upper case 11 and a lower case 12. Specifically, the upper case 11 forms a through hole 10 a.

The plastic test button 20 defines a transverse axis 101, a longitudinal axis 102 and a vertical axis 103 that are perpendicular to each other. The plastic test button 20 is moved along the vertical axis 103 relative to the housing 10 by being pressed by a user. In one embodiment, the vertical axis 103 may be the center line of the plastic test button 20 or the center line of the through hole 10 a.

The force of the test spring 40 acts on one end of the driver 30 in the direction of the transverse axis 101. Specifically, the test spring 40 is a torsion spring, and one pin of the torsion spring is in contact with the transmission member 30. The contact position of the pin of the torsion spring with the transmission member 30 is the action point of the test spring 40 to exert the action force on the transmission member 30.

The plastic test button 20 is formed with a first projection 21, a second projection 22, and a third projection 23 which are hooked on the inner wall of the housing 10 after the plastic test button 20 is reset to make the plastic test button 20 horizontal.

The second projection 22 and the third projection 23 are located on either side of the plastic test button 20 in the direction of the longitudinal axis 102. The first projection 21 is located at one end of the plastic test button 20 in the direction of the transverse axis 101.

The internal structure of traditional residual current operated circuit breaker arranges and makes the pin of experimental spring be difficult to direct under to the experimental button of plastics. The force of the test spring acts on one end of the transmission element, which is liable to cause the transmission element to deflect under the action of the test spring, and finally causes the plastic test button to deflect in the reset or lifted state. By providing the bump structure on the plastic test button 20, the inner wall of the housing 10 can be contacted to limit the local position of the plastic test button 20 when the plastic test button 20 is reset so that the plastic test button 20 is horizontal. The plastic test button 20 is horizontal, i.e. the plastic test button 20 is not deflected or exposed parallel to the housing 10. The plastic test button 20 is further effectively ensured to be horizontal by adopting a three-point positioning mode of the first lug 21, the second lug 22 and the third lug 23.

The bottoms of the first lug 21, the second lug 22 and the third lug 23 are all provided with a guide inclined plane. After the assembly of the housing 10, that is, after the fixation of the upper case 11 and the lower case 12 is completed, the outer side of the housing 10 is pushed into the inner side of the housing 10 through the through hole 10 a. Specifically, the guide slope contacts the wall of the through hole 10a to press the plastic test button 20, and the plastic test button 20 is deformed so that the bottom end of the plastic test button 20 penetrates from the outside of the housing 10 to the inside of the housing 10 through the through hole 10 a. After the bottom end of the plastic test button 20 enters the inside of the housing 10, the plastic test button 20 is restored to the original shape because the first, second and third protrusions 21, 22 and 23 of the plastic test button 20 are no longer in contact with the wall of the through hole 10 a. Under the action of the test spring 40, the first projection 21, the second projection 22 and the third projection 23 hook the inner wall of the housing 10 to form a three-point positioning.

In a preferred embodiment, the first protrusion 21, the second protrusion 22 and the third protrusion 23 are disposed at the bottom end of the plastic test button 20.

Specifically, the top of the transmission member 30 is formed with a second plane 31 that contacts the bottom of the plastic test button 20. The inner wall surface of the housing 10 includes a first plane 10b that contacts the top surfaces of the first, second, and third bosses 21, 22, and 23. The second plane 31 is parallel to the first plane 10 b. The second plane 31 and the first plane 10b are both perpendicular to the vertical axis 103.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims (10)

1. A residual current operated circuit breaker button arrangement comprising: the test device comprises a shell, a plastic test button for testing a loop, a transmission piece capable of being pushed by the plastic test button and a test spring for pushing the plastic test button to reset through the transmission piece; the shell is provided with a through hole for the plastic test button to pass through; the bottom end of the plastic test button is positioned in the shell; the top end of the plastic test button is positioned outside the shell; the transmission part is arranged below the plastic test button; the plastic test button is characterized in that a first lug, a second lug and a third lug are formed on the plastic test button, and the first lug, the second lug and the third lug hook the inner wall of the shell after the plastic test button is reset so as to enable the plastic test button to be horizontal; the bottom of the first lug, the bottom of the second lug and the bottom of the third lug are all provided with a guide inclined plane which is used for contacting and extruding with the hole wall of the through hole, the plastic test button deforms to enable the bottom end of the plastic test button to penetrate into the shell through the through hole from the outside of the shell.

2. The residual current operated circuit breaker push-button arrangement according to claim 1,

the plastic test button is defined with a transverse axis, a longitudinal axis and a vertical axis which are mutually perpendicular; the plastic test button is pressed by a user to move along the vertical axis relative to the housing; in the direction of the transverse axis, the acting force of the test spring acts on one end of the transmission piece; the second lug and the third lug are positioned on two sides of the plastic test button in the direction of the longitudinal axis; in the transverse axis direction, the first projection is located at one end of the plastic test button.

3. The residual current operated circuit breaker push-button arrangement according to claim 1,

the first lug, the second lug and the third lug are all arranged at the bottom end of the plastic test button.

4. The residual current operated circuit breaker push-button arrangement according to claim 2,

the top surfaces of the first bump, the second bump and the third bump are flush; the inner wall surface of the housing comprises a first plane surface which is contacted with the top surfaces of the first lug, the second lug and the third lug; a second plane which is contacted with the bottom of the plastic test button is formed at the top of the transmission piece; the first plane is parallel to the second plane.

5. The residual current operated circuit breaker push-button arrangement according to claim 4,

the first plane and the second plane are both perpendicular to the vertical axis.

6. A residual current operated circuit breaker button arrangement comprising: the test device comprises a shell, a plastic test button for testing a loop, a transmission piece capable of being pushed by the plastic test button and a test spring for pushing the plastic test button to reset through the transmission piece; the shell is provided with a through hole for the plastic test button to pass through; the bottom end of the plastic test button is positioned in the shell; the top end of the plastic test button is positioned outside the shell; the transmission part is arranged below the plastic test button; the plastic test button is characterized in that a first lug, a second lug and a third lug are formed on the plastic test button, and the first lug, the second lug and the third lug hook the inner wall of the shell after the plastic test button is reset so as to enable the plastic test button to be horizontal; the plastic test button is defined with a transverse axis, a longitudinal axis and a vertical axis which are mutually perpendicular; the plastic test button is pressed by a user to move along the vertical axis relative to the housing; in the direction of the transverse axis, the acting force of the test spring acts on one end of the transmission piece; the second lug and the third lug are positioned on two sides of the plastic test button in the direction of the longitudinal axis; in the transverse axis direction, the first projection is located at one end of the plastic test button.

7. The residual current operated circuit breaker push-button arrangement according to claim 6,

the top surfaces of the first bump, the second bump and the third bump are flush;

the bottom of the first lug, the bottom of the second lug and the bottom of the third lug are all provided with a guide inclined plane which is used for contacting and extruding with the hole wall of the through hole, the plastic test button deforms to enable the bottom end of the plastic test button to penetrate into the shell through the through hole from the outside of the shell.

8. The residual current operated circuit breaker push-button arrangement according to claim 6,

the first lug, the second lug and the third lug are all arranged at the bottom end of the plastic test button.

9. The residual current operated circuit breaker push-button arrangement according to claim 6,

the inner wall surface of the housing comprises a first plane surface which is contacted with the top surfaces of the first lug, the second lug and the third lug; a second plane which is contacted with the bottom of the plastic test button is formed at the top of the transmission piece; the first plane is parallel to the second plane.

10. The residual current operated circuit breaker push-button arrangement according to claim 9,

the first plane and the second plane are both perpendicular to the vertical axis.

Images