Circuit breaker with electric leakage indication function

Abstract

The utility model discloses a circuit breaker with an electric leakage indication function, and the circuit breaker is characterized in that an indication part is slidably disposed in a first accommodation cavity, the sliding direction of the indication part is the height direction of the circuit breaker, and the sliding direction of the indication part is perpendicular to the sliding direction of an actuating rod; the indicating piece is provided with a tripping indicating position and a reset position, and the tripping indicating position is higher than the reset position; one end of the reset spring abuts against the indicating piece. When the electric leakage release is not actuated, the actuating rod is blocked on a sliding path of the indicating piece, so that the indicating piece is kept at a reset position, and the reset spring is in a deformation state; when the electric leakage tripping device is actuated, the actuating rod relieves blocking of the indicating piece, and the indicating piece is kept at the tripping indicating position under the action of the reset spring. According to the invention, the occupied space in the length direction of the product is reduced.

Description

Technical Field

[0001] The present application relates to the electrical field, and more particularly to a circuit breaker with a leakage indication function. Background Art

[0002] In order to enable the user to clearly identify whether the circuit breaker has tripped due to leakage, a leakage indicator is often provided on the circuit breaker.

[0003] As a molded case leakage circuit breaker, its leakage indication function is generally implemented in the industry by integrating the indication member and the actuating rod of the leakage releaser into one piece, such as CN210628227U.

[0004] This leakage indication utilizes the sliding of the leakage release actuating rod, which slides along the length direction of the circuit breaker to realize the leakage release indication.

[0005] This structure has the following problems: first, the indicator and the actuating rod are integrally formed, which makes the structure more complicated. In addition, the indicator is generally small in size and is more likely to break after being integrally formed with the actuating rod. Second, the leakage indication effect presented by sliding along the length of the circuit breaker is not obvious. The user can only identify whether leakage tripping occurs by the change of the indication surface at the indication window of the shell.

[0006] Therefore, no matter which of the above reasons is used, this leakage release still has a large room for improvement. Summary of the invention

[0007] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a circuit breaker with a leakage indication function.

[0008] The present application provides: a circuit breaker with a leakage indication function, which includes a traction rod, a middle cover, a leakage release, an indicator and a reset spring; the middle cover includes an inner cavity and a first accommodating cavity, the opening of the first accommodating cavity is located on the upper surface of the middle cover, the opening of the inner cavity is located on the lower surface of the middle cover, and the inner cavity and the first accommodating cavity have a connecting position; the leakage release is detachably fixed in the first accommodating cavity, the leakage release has a slidably arranged actuating rod, the traction rod is in the inner cavity, and when the leakage release is in action, the actuating rod drives the traction rod to rotate through the connecting position to realize the tripping of the circuit breaker; The indicator is slidably arranged in the first accommodating cavity, the sliding direction of the indicator is the height direction of the circuit breaker, and the sliding direction of the indicator is perpendicular to the sliding direction of the actuating rod; the indicator has a tripping indication position and a reset position, and the tripping indication position is higher than the reset position; one end of the reset spring abuts against the indicator; when the leakage release is not actuated, the actuating rod blocks the sliding path of the indicator so that the indicator remains in the reset position and the reset spring is in a deformed state; when the leakage release is actuated, the actuating rod releases the blocking of the indicator, and the indicator remains in the tripping indication position under the action of the reset spring.

[0009] In some embodiments of the present application, the first end of the actuating rod is used to correspond to the traction rod, and the second end of the actuating rod is used to block the indicator when not actuated and to release the blocking of the indicator when actuated, and the first end and the second end are opposite ends.

[0010] In some embodiments of the present application, the indicator includes an indicating portion and a matching portion, wherein the indicating portion is located at the upper end of the matching portion, the indicating portion is used to realize the leakage indication function, and the matching portion is used to be blocked by the actuating rod when the leakage release is not actuated.

[0011] In some embodiments of the present application, an operating mechanism is also included, the operating mechanism includes a swinging lever, a reset protrusion is provided on the actuating rod, the reset protrusion is located on one side of the lever, and during the re-clamping of the operating mechanism, the lever pushes the reset protrusion to reset the actuated leakage releaser; a first transmission inclined plane is provided on the indicating member, and a second transmission inclined plane is provided on the actuating rod, the first transmission inclined plane and the second transmission inclined plane form an inclined plane transmission, and during the resetting process of the leakage releaser, the indicating member is reset through the inclined plane transmission.

[0012] In some embodiments of the present application, when the indicator is in the tripping indicating position, the first transmission inclined surface and the second transmission inclined surface are in contact.

[0013] In some embodiments of the present application, the indicator member includes an indicating portion and a matching portion, wherein the indicating portion is located at the upper end of the matching portion, and the indicating portion is used to realize a leakage indication function; a through hole is opened on the matching portion, and a hole wall of the through hole is a first transmission inclined surface; and the actuating rod is provided with a second transmission inclined surface that partially penetrates the through hole.

[0014] In some embodiments of the present application, a guide groove is provided in the first accommodating cavity, a guide rib is provided on the indicator, the direction of the guide rib and the guide groove is parallel to the sliding direction of the indicator, and the guide rib and the guide groove are in sliding fit.

[0015] In some embodiments of the present application, the first accommodating cavity includes a first cavity side wall, and a first bracket is arranged on the cavity bottom of the first accommodating cavity; the number of guide grooves is two, one of which is arranged on the first bracket, and the other is arranged on the first cavity side wall; the number of guide ribs is two, corresponding to the two guide grooves respectively.

[0016] In some embodiments of the present application, a top cover is further included, which is arranged above the middle cover and closes the opening of the first accommodating cavity; an indication port corresponding to the indicator is opened on the top cover; when the indicator is in the tripping indication position, the upper end of the indicator exceeds the indication port and is exposed to the outside of the top cover; when the indicator is in the reset position, the upper end of the indicator is in the indication port or the upper end of the indicator is flush with the upper surface of the top cover or the upper end of the indicator is lower than the upper surface of the top cover.

[0017] In some embodiments of the present application, the return spring is a compression spring, a first spring mounting portion is provided on the indicator, a second spring mounting portion is provided in the first accommodating cavity, one end of the compression spring is provided on the first spring mounting portion, and the other end is provided on the second spring mounting portion; the first spring mounting portion and / or the second spring mounting portion are a groove and / or a protrusion.

[0018] As can be seen from the above, in the technical solution of the present application, the indicator and the actuating rod are independent components, and the indication is achieved between the two through a reset spring and the relationship between blocking and non-blocking, which can bring many effects, for example: 1. The indicator and the actuating rod are independent components, which will not cause the easy breakage and complex processing brought by the integrated parts of the prior art. 2. The indicator and the actuating rod are independent components, which can make it possible to install the leakage releaser and the indicator separately, which will be conducive to sequential assembly. 3. The indicator is set to slide along the height direction of the circuit breaker, and the trip indication position will be higher than the reset position, which can make the leakage trip indication more conspicuous and users can more easily recognize that the circuit breaker is tripped due to leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1A schematic diagram of the structure of a middle cover, a tripper, and an indicator in a circuit breaker with a leakage indication function in an embodiment of the present application is shown;

[0021] Figure 2 A schematic diagram of the structure of a middle cover and an indicator in a circuit breaker with a leakage indication function according to an embodiment of the present application is shown;

[0022] Figure 3 A schematic diagram of the structure of a middle cover and a traction rod in a circuit breaker with a leakage indication function in an embodiment of the present application is shown;

[0023] Figure 4 A schematic diagram showing the structure of an indicator in a circuit breaker with a leakage indication function according to an embodiment of the present application in a trip indication position;

[0024] Figure 5 A schematic diagram showing a structure in which an indicator in a circuit breaker with a leakage indication function according to an embodiment of the present application is in a reset position;

[0025] Figure 6 A schematic diagram of the structure of an actuating rod and an indicating member in a circuit breaker with a leakage indication function according to an embodiment of the present application is shown;

[0026] Figure 7 A schematic diagram of the structure of an actuating rod in a circuit breaker with a leakage indication function according to an embodiment of the present application is shown;

[0027] Figure 8 A schematic diagram of the structure of an indicator in a circuit breaker with a leakage indication function according to an embodiment of the present application is shown;

[0028] Fig. 9 A schematic diagram of the structure of the reset spring installation structure in the circuit breaker with leakage indication function according to the embodiment of the present application is shown; DETAILED DESCRIPTION

[0029] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more poles of the feature. In the description of this application, "multi-pole" means two or more poles, unless otherwise clearly and specifically defined.

[0032] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "electrically connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed electrical connection, a detachable electrical connection, or an integrated one; it can be a mechanical electrical connection, or an electrical electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of the two-pole element or the interaction relationship between the two-pole elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. Example

[0034] like Figure 1-9 As shown, a circuit breaker with a leakage indication function includes an operating mechanism, a contact assembly, a leakage release 400, a base, a middle cover 100, a top cover, an indicator 200, a reset spring 300 and other components.

[0035] The contact assembly and the circuit breaker realize the circuit path of the circuit breaker by connecting the contact assembly, and realize the circuit breaking of the circuit breaker by disconnecting the contact assembly. The connection and disconnection of the contact assembly here are completed by the operating mechanism. The contact assembly here is common knowledge and will not be described in detail here.

[0036] The operating mechanism is the operating mechanism of the molded case circuit breaker, and includes a handle, a lever 501, a traction rod 502, a trip buckle, a lock buckle, a re-buckle, an upper connecting rod, a lower connecting rod, a main tension spring, etc. The operating mechanism includes an opening state and a closing state. When the operating mechanism is in the closing state, if the traction rod 502 is pushed to rotate, the steady state of the operating mechanism will be broken, so that the operating mechanism performs the opening operation. Of course, the basic principle of the operating mechanism here is also common knowledge in the art, and will not be repeated here.

[0037] The middle cover 100 includes an inner cavity 101 and a first accommodating cavity 102. The inner cavity 101 here is a cavity facing the base (not shown in the figure), that is, the opening of the inner cavity 101 is located on the lower surface of the middle cover 100. The first accommodating cavity 102 here is a cavity facing the top cover, that is, the opening of the first accommodating cavity 102 is located on the upper surface of the middle cover 100. Here, the traction rod 502 of the operating mechanism is in the inner cavity 101.

[0038] The leakage release 400 adopts a magnetic flux release, which has an actuating rod 401. The actuating rod 401 is slidably arranged, and the sliding direction of the actuating rod 401 is the length direction of the circuit breaker. That is, the actuating rod 401 will be offset after the leakage release 400 is actuated and when it is not actuated. There is a connecting position 103 on the middle cover 100, and the connecting position 103 connects the inner cavity 101 with the first accommodating cavity 102. The connecting position 103 is for the first end 401a of the actuating rod 401 to penetrate. In this way, when leakage occurs, the leakage release 400 is actuated, and the first end 401a of the actuating rod 401 can drive the traction rod 502 to rotate, so that the operating mechanism performs the opening operation.

[0039] The indicator 200 is slidably disposed in the first accommodating cavity 102. Here, the sliding direction of the indicator 200 is the height direction of the circuit breaker, that is, the sliding direction of the indicator 200 is perpendicular to the sliding direction of the actuating rod 401. The indicator 200 has positions, one of which is a trip indication position and the other is a reset position. Here, the trip indication position is higher than the reset position.

[0040] One end of the return spring 300 abuts against the indicator 200, and the other end abuts against the first accommodating chamber 102. Here, the return spring 300 is a compression spring, a first spring mounting portion 200a is provided on the indicator 200, a second spring mounting portion 102a is provided in the first accommodating chamber 102, one end of the compression spring is provided on the first spring mounting portion 200a, and the other end is provided on the second spring mounting portion 102a. Here, the first spring mounting portion 200a is a groove, and the second spring mounting portion 102a is a protrusion. Of course, the two can also be swapped, or both use protrusions, or both use grooves, or both use protrusions and grooves. In either case, the stable assembly of the compression spring can be guaranteed.

[0041] When the leakage release 400 is not actuated, the indicator 200 is blocked by the actuating rod 401 on the sliding path of the indicator 200, and the indicator 200 is kept in the reset position, and the reset spring 300 is in a deformed state (providing a biasing force that causes the indicator 200 to move in the direction of the tripping indication position). When the leakage release 400 is actuated, the actuating rod 401 releases the blocking of the indicator 200, and the indicator 200 reaches the tripping indication position under the action of the reset spring 300 and remains in the tripping indication position.

[0042] Here, the part of the actuating rod 401 used to block the indicator 200 is the second end 401b, and the first end 401a and the second end 401b are opposite ends of the actuating rod 401. Such a design of two opposite ends will facilitate assembly.

[0043] A reset protrusion 401c extends from the actuating rod 401 toward one side of the lever 501. Here, the side of the lever 501 is specifically the side of the direction in which the lever 501 moves when the operating mechanism is buckled again. In this way, by buckling the operating mechanism again, the lever 501 can be used to push the reset protrusion 401c to reset the actuated leakage release 400. Moreover, a first transmission inclined plane 200d is provided on the indicating member 200, and a second transmission inclined plane 401d is provided on the actuating rod 401. The second transmission inclined plane 401d is located above the first transmission inclined plane 200d, and an inclined plane transmission is formed by the first transmission inclined plane 200d and the second transmission inclined plane 401d. In the reset process of the actuating rod 401, the inclined plane transmission can also be used to make the indicating member 200 move down to the reset position, so that the reset spring 300 is in a deformed state. Such an inclined plane transmission will be conducive to the reset of the indicating member 200.

[0044] Here, the indicator 200 is also kept in the reset position due to the first transmission slope 200d and the second transmission slope 401d. When the actuating rod 401 is actuated, as the second transmission slope 401d gradually slides, the reset spring 300 can move the indicator 200 up to the tripping indication position. When the indicator 200 is in the tripping indication position, the first transmission slope 200d and the second transmission slope 401d are in contact.

[0045] Here, the indicator 200 includes an indicator portion 201 and a matching portion 202. The indicator portion 201 is located at the upper end of the matching portion 202, and the indicator portion 201 here is a cylinder. A through hole 203 is provided on the matching portion 202, and the lower hole wall of the through hole 203 is a first transmission inclined surface 200d. The part of the actuating rod 401 provided with a second transmission inclined surface 401d penetrates the through hole 203 and forms an inclined surface matching with the first transmission inclined surface 200d. Such a through hole 203 design is also designed to facilitate the installation of the indicator 200 and the actuating rod 401.

[0046] A guide groove 1023 is provided in the first accommodating cavity 102, and a guide rib 2001 is provided on the indicator 200. The directions of the guide rib 2001 and the guide groove 1023 are arranged parallel to the sliding direction of the indicator 200, and the guide rib 2001 and the guide groove 1023 are in sliding cooperation. Specifically, a guide groove 1023 is provided on the first cavity side wall 1021 of the first accommodating cavity 102, a first bracket 1022 is provided on the cavity bottom of the first accommodating cavity 102, and another guide groove 1023 is provided on the first bracket 1022. There are two guide ribs 2001, which correspond to the two guide grooves 1023 respectively.

[0047] Top cover ( Figure 4-5 The top cover 100 is fixed on the top of the middle cover 100, and the top cover basically closes the opening of the first accommodating cavity 102. There is an indication port S1 at the position of the top cover corresponding to the indicator 200, so that when the indicator 200 is in the trip indication position, the upper end of the indicator 200 can be exposed to the outside of the top cover through the indication port S1, and the user can more easily identify the occurrence of leakage tripping. When the indicator 200 is in the reset position, the indicator 200 retracts into the indication port S1, or the indicator 200 is flush with the upper surface of the top cover or lower than the upper surface of the top cover.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0049] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A circuit breaker with leakage indication function, characterized in that: The invention comprises a traction rod, a middle cover, a leakage release, an indicator and a reset spring; the middle cover comprises an inner cavity and a first accommodating cavity, the opening of the first accommodating cavity is located on the upper surface of the middle cover, the opening of the inner cavity is located on the lower surface of the middle cover, and the inner cavity and the first accommodating cavity have a connecting position; the leakage release is detachably fixed in the first accommodating cavity, the leakage release has an actuating rod slidably arranged, the traction rod is in the inner cavity, and when the leakage release is in action, the actuating rod drives the traction rod to rotate through the connecting position to realize the tripping of the circuit breaker; the indicator is slidably arranged in the first accommodating cavity The indicator is in the cavity, the sliding direction of the indicator is the height direction of the circuit breaker, and the sliding direction of the indicator is perpendicular to the sliding direction of the actuating rod; the indicator has a tripping indication position and a reset position, and the tripping indication position is higher than the reset position; one end of the reset spring abuts against the indicator; when the leakage release is not actuated, the actuating rod blocks the sliding path of the indicator so that the indicator remains in the reset position and the reset spring is in a deformed state; when the leakage release is actuated, the actuating rod releases the obstruction of the indicator, and the indicator remains in the tripping indication position under the action of the reset spring.

2. The circuit breaker with leakage indication function according to claim 1, characterized in that: The first end of the actuating rod is used to correspond to the traction rod, and the second end of the actuating rod is used to block the indicator when not actuated and to release the blocking of the indicator when actuated. The first end and the second end are opposite ends.

3. The circuit breaker with leakage indication function according to claim 1, characterized in that: The indicator comprises an indicating portion and a matching portion, wherein the indicating portion is located at the upper end of the matching portion, the indicating portion is used to realize the leakage indication function, and the matching portion is used to be blocked by the actuating rod when the leakage release is not actuated.

4. The circuit breaker with leakage indication function according to claim 1, characterized in that: It also includes an operating mechanism, which includes a swinging lever, a reset protrusion is provided on the actuating rod, and the reset protrusion is located on one side of the lever. During the re-locking process of the operating mechanism, the lever pushes the reset protrusion to reset the actuated leakage releaser; a first transmission inclined plane is provided on the indicating member, and a second transmission inclined plane is provided on the actuating rod. The first transmission inclined plane and the second transmission inclined plane form an inclined plane transmission, and during the resetting process of the leakage releaser, the indicating member is reset through the inclined plane transmission.

5. The circuit breaker with leakage indication function according to claim 4, characterized in that: When the indicator is in the trip indicating position, the first transmission inclined surface and the second transmission inclined surface are in contact.

6. The circuit breaker with leakage indication function according to claim 4, characterized in that: The indicator member includes an indicating portion and a matching portion, wherein the indicating portion is located at the upper end of the matching portion and is used to realize a leakage indication function; a through hole is provided on the matching portion, and a hole wall of the through hole is a first transmission inclined surface; and a part of the actuating rod having a second transmission inclined surface penetrates the through hole.

7. The circuit breaker with leakage indication function according to claim 4, characterized in that: A guide groove is arranged in the first accommodating cavity, and a guide rib is arranged on the indicating member. The directions of the guide rib and the guide groove are arranged parallel to the sliding direction of the indicating member, and the guide rib and the guide groove are in sliding cooperation.

8. The circuit breaker with leakage indication function according to claim 7, characterized in that: The first accommodating cavity includes a first cavity side wall, and a first bracket is arranged on the cavity bottom of the first accommodating cavity; there are two guide grooves, one of which is arranged on the first bracket, and the other is arranged on the first cavity side wall; there are two guide ribs, which correspond to the two guide grooves respectively.

9. The circuit breaker with leakage indication function according to claim 1, characterized in that: It also includes a top cover, which is arranged above the middle cover and closes the opening of the first accommodating cavity; an indicating port corresponding to the indicator is opened on the top cover; when the indicator is in the tripping indicating position, the upper end of the indicator exceeds the indicating port and is exposed to the outside of the top cover; when the indicator is in the reset position, the upper end of the indicator is in the indicating port or the upper end of the indicator is flush with the upper surface of the top cover or the upper end of the indicator is lower than the upper surface of the top cover.

10. The circuit breaker with leakage indication function according to claim 1, characterized in that: The return spring is a compression spring, a first spring mounting portion is provided on the indicator, a second spring mounting portion is provided in the first accommodating cavity, one end of the compression spring is provided on the first spring mounting portion, and the other end is provided on the second spring mounting portion; the first spring mounting portion and / or the second spring mounting portion are a groove and / or a protrusion.

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