CN213025988U - Indicating device for circuit breaker and circuit breaker with indicating device - Google Patents

Abstract

The utility model relates to an indicating device for circuit breaker and have its circuit breaker. This indicating device is located the panel inboard that is equipped with the instruction window of this circuit breaker, and indicating device includes: a driving mechanism, one end of which is controlled by external force to move; a rotating shaft which rotates by receiving the movement of the driving mechanism; a pull plate which rotates following the rotation of the rotating shaft; the first limiting piece and the second limiting piece are arranged on the inner side of the panel and are respectively distributed on two sides of the indicating window; one end of the indicating plate is rotatably connected to the rotating shaft, the other end of the indicating plate extends to a position between the first limiting piece and the second limiting piece, and first indicating information and second indicating information are marked at the other end of the indicating plate; the other end of the pulling plate is connected to the indicating plate through a tension spring, so that the tension spring pulls the indicating plate around the rotating shaft with a first torque to abut against the first limiting part, or pulls the indicating plate around the rotating shaft with a second torque opposite to the direction of the first torque to abut against the second limiting part, and therefore the second indicating information or the first indicating information is exposed to the indicating window.

Description

Indicating device for circuit breaker and circuit breaker with indicating device

Technical Field

The utility model relates to an electrical equipment technical field especially relates to indicating device for circuit breaker and have its circuit breaker.

Background

Circuit breakers are widely used in power distribution systems as electrical devices that can connect, carry and break electrical current. The circuit breaker in the prior art is generally provided with an indicating device linked with an operating mechanism for controlling opening and closing actions or energy storage actions of the circuit breaker, and the indicating device moves to a first orientation or a second orientation to indicate an opening and closing state or an energy storage state of the circuit breaker in response to the actions of the operating mechanism, so that a worker can observe the working state of the circuit breaker, and the circuit safety and the personnel safety are ensured. Among them, the indicating device used in the circuit breaker at present usually adopts hard connection such as connecting rod transmission connection, but because of reasons such as machining error or installation error, the position that the indicating end of indicating device is located in first orientation or second orientation can have the condition of misplacing with the instruction window on the panel of circuit breaker with the difficult avoidance, and the messenger indicates the effect not good. In order to solve this problem, the installer is required to manually adjust, for example, re-stick the label on the indicating device to align the two, which obviously has the problems of high labor cost and low installation efficiency.

There is therefore a need in the art for an indicating device that is less labor intensive, efficient to install, and accurate in indicating.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an indicating device for circuit breaker that can solve above-mentioned part problem at least.

The utility model discloses still aim at providing an use above-mentioned modified indicating device for circuit breaker's circuit breaker.

According to an aspect of the utility model provides an indicating device for circuit breaker, this indicating device is located this circuit breaker's the panel inboard that is equipped with the instruction window, indicating device includes: a driving mechanism, one end of which is controlled by external force to move; a rotating shaft which is connected to the other end of the driving mechanism in a non-relative movement manner so as to receive the movement of the driving mechanism to rotate; a pull plate having one end connected to the rotation shaft to be immovable to rotate following the rotation of the rotation shaft; the first limiting piece and the second limiting piece are arranged on the inner side of the panel and are respectively distributed on two sides of the indicating window; one end of the indicating plate is rotatably connected to the rotating shaft, the other end of the indicating plate extends to a position between the first limiting part and the second limiting part, and first indicating information and second indicating information are marked at the other end of the indicating plate; the other end of the pulling plate is connected to the indicating plate through a tension spring, so that when the pulling plate rotates along with the rotation of the rotating shaft, the tension spring pulls the indicating plate with a first torque around the rotating shaft to rotate to abut against the first limiting part, or pulls the indicating plate with a second torque opposite to the direction of the first torque around the rotating shaft to rotate to abut against the second limiting part, and therefore the second indicating information or the first indicating information is exposed to the indicating window.

Compared with the prior art, the utility model provides an indicating device is through the elastic component extension spring promptly between pulling plate and indicator plate, but the external force that buffering indicating device received, has avoided it probably to cause the damage and has improved the reliability because of external force strikes. And through the cooperation of pulling plate, extension spring, indicator panel and first locating part and second locating part for even the external force that indicating device received surpasss under the condition of anticipated external force, the orientation that the indicator panel was located at demonstration first indicating information or second indicating information is fixed all the time, thereby can guarantee the rigidity of the other end stop motion of indicator panel for the panel of circuit breaker, thereby avoided because of adopting the condition of the panel dislocation of indicating device and circuit breaker that the rigid connection can exist, improved the utility model discloses an indicating device's location accuracy, and avoided the cost of labor that needs manual adjustment and the time that consumes.

Preferably, the drive mechanism is configured to include: a driving plate which is controlled by an external force to rotate; a push plate having one end rotatably connected to the driving plate to move up and down by the driving plate; and one end of the crank arm is hinged to the other end of the pushing plate, and the other end of the crank arm is connected to the rotating shaft in a non-relative-motion manner so as to drive the rotating shaft to rotate around the axis of the rotating shaft under the action of the pushing plate.

Preferably, the other end of the indicator board is provided with an indicating triangle platform protruding towards the circuit breaker panel, and a surface of the indicating triangle platform facing the circuit breaker panel is configured as a first indicating surface adjacent to the first limiting part and identifying the first indicating information and a second indicating surface adjacent to the second limiting part and identifying the second indicating information.

Preferably, the angle between the first indication surface and the second indication surface is designed such that the second indication surface is opposed in parallel to the panel and aligned with the indication window when the indication cam abuts against the first stopper, and the first indication surface is opposed in parallel to the panel and aligned with the indication window when the indication cam abuts against the second stopper.

Preferably, one end of the indicator plate is configured to be connected to the rotating shaft via a bearing.

Preferably, the crank arm is configured to be screwed to the rotation shaft.

Preferably, the pull plate is configured as a first section arranged in parallel with the indicator plate and connected to the indicator plate via the tension spring, and a second section extending from the first section against an outer surface of the rotary shaft to be connected to the rotary shaft so as to be immovable relative thereto.

Preferably, wear to be equipped with the connecting piece on the indicator board, be equipped with joint portion on the pulling plate, so that the both ends joint of extension spring extremely the connecting piece with joint portion.

According to another aspect of the utility model, still provide a circuit breaker, it has panel and the aforesaid indicating device for circuit breaker that is equipped with the instruction window.

Additional features and advantages of the invention will be set forth in part in the description which follows, and in part will be apparent to those having ordinary skill in the art upon examination of the following, or may be learned from the practice of the invention.

Drawings

Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:

fig. 1 is a first schematic view of an indicating device of the present invention, wherein the indicating device displays second indicating information;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a second schematic view of the indicating device of the present invention, wherein the indicating device displays the first indicating information.

Description of reference numerals:

1-indicating means for circuit breakers; 11-a drive mechanism; 111-a drive plate; 112-a push plate; 113-crank arm; 12-a rotating shaft; 13-pulling the plate; 131-a first section; 132-a second section; 14-a first stop; 15-a second limit; 16-an indicator panel; 161-indicating triangular stage; 162-a first indicator face; 163-second indicating surface; 164-a bearing; 165-a connector; 17-a tension spring; 21-a panel; 22-indicating window.

Detailed Description

Referring now to the drawings, illustrative aspects of the disclosed indicating device for a circuit breaker will be described in detail. Although the drawings are provided to present some embodiments of the invention, the drawings are not necessarily to scale of particular embodiments, and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the disclosure of the present invention. The position of some components in the drawings can be adjusted according to actual requirements on the premise of not influencing the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification are not necessarily referring to all drawings or examples.

Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below", and other directional terms, will be understood to have their normal meaning and refer to those directions as they normally relate to when viewing the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.

The terms "first," "second," and the like as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

The terms "joined," "connected," and the like as used herein, include both two components that are indirectly connected together through an intermediate layer (e.g., an adhesive, a solder, etc.) or an intermediate member (e.g., a connector, a transition member, etc.), and two components that are directly connected together without any intermediate layer (e.g., an adhesive, a solder, etc.) or intermediate member (e.g., a connector, a transition member, etc.).

Fig. 1 to 3 show, by way of example, an indicating device 1 for a circuit breaker according to the present invention and a circuit breaker to which the indicating device is applied. The indicating device 1 in this example can cooperate with the indicating window 22 on the panel 21 of the circuit breaker when the circuit breaker is controlled by the operating mechanism to perform the opening and closing actions or the energy storage actions, so that the corresponding indicating information on the indicating device 1 is exposed from the indicating window 22, thereby helping an operator to know the working state of the circuit breaker.

Taking closing and opening brake as an example, the circuit breaker can generally include the operating device who controls the moving contact and the static contact or separation of circuit breaker, the utility model provides an indicating device 1 can with one of them part of this operating device for example main shaft linkage to follow operating device's closing action and separating brake action and move, and then can keep in first orientation even the first indicating information on indicating device 1 aligns the instruction window 22 of panel 21 of circuit breaker like closing instruction information when operating device's closing action is accomplished, or keep in the second orientation even the second indicating information on indicating device 1 aligns the instruction window 22 of panel 21 of circuit breaker like separating brake instruction information when operating device's separating brake action is accomplished.

Specifically, the indicating device 1 may include a driving mechanism 11, a rotating shaft 12, a pulling plate 13, an indicating plate 16, a first limiting member 14 and a second limiting member 15. Wherein, one end of the driving mechanism 11 can be linked with the main shaft of the circuit breaker so as to move along with the rotation of the main shaft of the circuit breaker. The shaft 12 may be rotatably connected to the panel of the circuit breaker such that it may be forced to rotate about its axis. The rotary shaft 12 is connected to one end of the main shaft of the driving mechanism 11, to which the circuit breaker is not connected, so as to be relatively immovable, and is rotated by the driving mechanism 11. Thus, the pulling plate 13 connected to the rotation shaft 12 is allowed to rotate following the rotation of the rotation shaft 12. One end of the indicating plate 16 is rotatably connected to the rotating shaft 12, for example, via a bearing 164, and the other end of the indicating plate 16 extends between a first limiting member 14 disposed inside the panel 21 of the circuit breaker and located on the upper side of the indicating window 22 and a second limiting member 15 located on the lower side of the indicating window 22, so that the rotation of the rotating shaft 12 cannot be directly transmitted to the indicating plate 16. In the present invention, the pulling plate 13 is connected to the area of the indicating plate 16 between the pulling plate 13 and the other end of the indicating plate 16 in the page of fig. 1 via the tension spring 17 to enable the rotation of the indicating plate 16 about the rotating shaft 12.

Corresponding to the opening or closing action of the circuit breaker, the tension spring 17 pulls the indicating plate 16 with a first torque and a second torque in opposite directions, so as to drive the indicating plate 16 to move into a first orientation in which the other end of the indicating plate 16 abuts against the first limiting member 14 and a second orientation in which the other end of the indicating plate 16 abuts against the second limiting member 15 when the closing action and the opening action are completed, respectively. Optionally, the first indication information or the second indication information may be different colors, different characters, different patterns, or any combination of different colors, characters, and patterns, and the designer may select the first indication information or the second indication information at will according to actual needs.

It can be seen that the impact force transmitted from the main shaft of the circuit breaker can be buffered by the elastic structure of the tension spring 17 provided between the pulling plate 13 and the indicating plate 16. The torque direction applied to the indicator plate 16 by the tension spring 17 can be changed, and the other end of the indicator plate 16 can be limited in the position where the final movement is stopped by the fixed first limiting part 14 or the fixed second limiting part 15, so that even if the main shaft of the circuit breaker has an overtravel in the opening action or the closing action, the final stop position of the other end of the indicator plate 16 is fixed, the indication information of the other end of the indicator plate 16 can be aligned with the indication window 22 on the panel 21 of the circuit breaker, the positioning is accurate, and manual adjustment is not needed.

Alternatively, as shown in fig. 1 and 2, the driving mechanism 11 may be configured to include a driving plate 111, a push plate 112, and a crank arm 113. The driving plate 111 can be connected with the main shaft of the circuit breaker through the left circular hole of the driving plate 111 shown in fig. 1, so as to rotate around the center of the left circular hole of the driving plate 111 in fig. 1 under the driving of the main shaft of the circuit breaker. The lower end of the push plate 112 may be pinned to a substantially middle region of the driving plate 111 to move up and down upon rotation of the driving plate 111. The left end of the crank arm 113 is pinned to the upper end of the pushing plate 112, the right end is connected to the rotating shaft 12 in a non-movable manner such as being screwed, and the rotating shaft 12 is rotatably connected to the panel of the circuit breaker, so that the position of the rotating shaft 12 in the page of fig. 1 is not changed, and the crank arm 113 drives the rotating shaft 12 to rotate with the rotation center being the axis of the rotating shaft 12 and the radius being the length of the crank arm 113.

Alternatively, as shown in fig. 1, the other end of the indication plate 16 may be provided with an indication triangle base 161 protruding toward the circuit breaker panel 21, and a surface of the indication triangle base 161 facing the circuit breaker panel 21 may be divided into a first indication surface 162 identified with first indication information and a second indication surface 163 identified with second indication information at an angle, the first indication surface 162 being located above and the second indication surface 163 being located below. Wherein, the angle between the first indicating surface 162 and the second indicating surface 163 can be designed to be parallel and opposite to the panel 21 of the circuit breaker and aligned with the indicating window 22 of the panel 21 of the circuit breaker when the closing action or the opening action is completed. For example, when the closing operation of the circuit breaker is completed, as shown in fig. 1, the upper end of the indication triangular table 161 abuts against the lower side of the first limiting member 14, and the second indication surface 163 of the indication triangular table 161 is parallel to and opposite to the panel 21 of the circuit breaker and is aligned with the indication window 22 of the panel 21 of the circuit breaker, so that the second indication information on the second indication surface 163 can be displayed from the indication window 22 of the panel 21 of the circuit breaker. Similarly, when the opening operation of the circuit breaker is completed, as shown in fig. 3, the lower end of the indication triangular table 161 abuts against the upper side of the second limiting member 15, and the first indication surface 162 of the indication triangular table 161 is parallel to and opposite to the panel 21 of the circuit breaker and is aligned with the indication window 22 of the panel 21 of the circuit breaker, so that the second indication information on the first indication surface 162 can be displayed from the indication window 22 of the panel 21 of the circuit breaker. When the action of the circuit breaker is an energy storage action, the indicating device 1 can function similarly to the switching-on and switching-off action.

Alternatively, the pulling plate 13 may be configured as a first section 131 arranged parallel to the indicator plate 16 and connected to the indicator plate 16 via a tension spring 17 and a second section 132 extending from the first section 131 against the outer surface of the spindle 12 to be connected, e.g. screwed, to the spindle 12 in a relatively immovable manner. This improves the strength of connection between the pulling plate 13 and the rotating shaft 12. In addition, the end of the first section 131 adjacent to the indication triangular table 161 may be provided with a clamping portion, the indication plate 16 may be provided with a connecting member 165, and the end of the connecting member 165 adjacent to the first section 131 is spaced apart from the indication plate 16, so as to allow hooks at both ends of the tension spring 17 to be clamped to the clamping portion of the first section 131 and the outer circumferential surface of the connecting member 165, respectively, with simple structure and convenient installation.

For example, when the circuit breaker is changed from the closing state to the opening state, the indicating device 1 may move from the orientation shown in fig. 1 to the orientation shown in fig. 3. Wherein, the driving plate 111 rotates counterclockwise under the driving of the main shaft of the breaker, pushes the pushing plate 112 to move upward, thereby driving the crank arm 113 to rotate clockwise around the axis of the rotating shaft 12, the rotating shaft 12 rotates clockwise around its own axis, the pulling plate 13 correspondingly rotates clockwise around the axis of the rotating shaft 12, the tension spring 17 is changed from applying a moment in a counterclockwise direction to the indicating plate 16 to applying a second moment in a clockwise direction to the indicating plate 16, therefore, the indicating plate 16 rotates clockwise around the rotating shaft 12, the other end of the indicating plate 16 is separated from the contact with the first limiting member 14 and moves to abut against the second limiting member 15, the first indicating surface 162 marked with the second indicating information such as the letter "branch" is aligned with the indicating window 22 of the panel 21 of the circuit breaker, and an operator can observe the information displayed on the indicating window 22 from the outer side of the circuit breaker to know that the current state of the circuit breaker is the opening state.

Accordingly, when the circuit breaker is transferred from the open state to the closed state, the indicating device 1 may be moved to the orientation shown in fig. 1 as shown in the orientation shown in fig. 3. Wherein, the driving plate 111 is driven by the main shaft of the breaker to rotate clockwise, the pushing plate 112 is pulled to move downwards, thereby driving the crank arm 113 to rotate counterclockwise around the axis of the rotating shaft 12, the rotating shaft 12 rotates counterclockwise around its own axis, the pulling plate 13 rotates counterclockwise around the axis of the rotating shaft 12 correspondingly, the tension spring 17 is changed from applying a second moment in the clockwise direction to the indicating plate 16 to applying a first moment in the counterclockwise direction to the indicating plate 16, therefore, the indicator plate 16 rotates counterclockwise around the rotating shaft 12, the other end of the indicator plate 16 is separated from the second limiting member 15 and moves to abut against the first limiting member 14, the second indicating surface 163 indicating the first indicating information such as the word "close" is aligned with the indicating window 22 of the panel 21 of the circuit breaker, and the operator can see the information displayed on the indicating window 22 from the outside of the circuit breaker to know that the current state of the circuit breaker is the closed state.

It should be understood that although the description is in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims (9)

1. An indicating device (1) for a circuit breaker, the indicating device (1) being located inside a panel (21) of the circuit breaker provided with an indicating window (22), characterized in that the indicating device (1) comprises:

a drive mechanism (11) one end of which is controlled by an external force to move;

a rotating shaft (12) which is connected to the other end of the driving mechanism (11) in a non-relative-movement manner so as to receive the movement of the driving mechanism (11) and rotate;

a pulling plate (13) having one end connected to the rotating shaft (12) so as not to be relatively movable, to rotate following the rotation of the rotating shaft (12);

a first limiting piece (14) and a second limiting piece (15) which are arranged on the inner side of the panel (21) and respectively distributed on two sides of the indicating window (22);

an indicating plate (16), one end of which is rotatably connected to the rotating shaft (12) and the other end of which extends to a position between the first limiting member (14) and the second limiting member (15), wherein the other end of the indicating plate (16) is marked with first indicating information and second indicating information;

the other end of the pulling plate (13) is connected to the indicating plate (16) through a tension spring (17), so that when the pulling plate (13) rotates along with the rotation of the rotating shaft (12), the tension spring (17) pulls the indicating plate (16) around the rotating shaft (12) with a first moment to abut against the first limiting part (14), or pulls the indicating plate (16) around the rotating shaft (12) with a second moment opposite to the direction of the first moment to abut against the second limiting part (15), and therefore the second indication information or the first indication information is exposed to the indicating window (22).

2. The indicating device (1) for a circuit breaker according to claim 1, characterized in that said driving mechanism (11) is configured to comprise:

a drive plate (111) that is controlled by an external force to rotate;

a push plate (112) having one end rotatably connected to the driving plate (111) to move up and down by the driving plate (111);

and one end of the crank arm (113) is hinged to the other end of the pushing plate (112), and the other end of the crank arm is connected to the rotating shaft (12) in a non-relative-motion manner so as to drive the rotating shaft (12) to rotate around the axis of the rotating shaft (12) under the action of the pushing plate (112).

3. The indicating device (1) for a circuit breaker according to claim 1, wherein the other end of the indicating plate (16) is provided with an indicating triangle (161) protruding toward the circuit breaker panel (21), and a surface of the indicating triangle (161) facing the circuit breaker panel (21) is configured as a first indicating surface (162) adjacent to the first stopper (14) and indicating the first indicating information and a second indicating surface (163) adjacent to the second stopper (15) and indicating the second indicating information at an angle.

4. The indicating device (1) for a circuit breaker according to claim 3, wherein the angle between the first indicating surface (162) and the second indicating surface (163) is designed such that the second indicating surface (163) is in parallel opposition to the face plate (21) and in alignment with the indicating window (22) when the indicating cam (161) abuts the first stopper (14), and the first indicating surface (162) is in parallel opposition to the face plate (21) and in alignment with the indicating window (22) when the indicating cam (161) abuts the second stopper (15).

5. The indicating device (1) for a circuit breaker according to claim 1, wherein one end of the indicating plate (16) is configured to be connected to the rotating shaft (12) via a bearing (164).

6. The indicating device (1) for a circuit breaker according to claim 2 wherein said crank arm (113) is configured to be screwed to said shaft (12).

7. The indicating device (1) for a circuit breaker according to claim 1, characterized in that the pulling plate (13) is configured as a first section (131) arranged parallel to the indicating plate (16) and connected to the indicating plate (16) via the tension spring (17), and a second section (132) extending from the first section (131) against an outer surface of the rotary shaft (12) to be connected to the rotary shaft (12) in a relatively immovable manner.

8. The indicating device (1) for the circuit breaker according to claim 1, wherein a connecting member (165) is inserted into the indicating plate (16), and a locking portion is provided on the pulling plate (13) so that both ends of the tension spring (17) are locked to the connecting member (165) and the locking portion.

9. A circuit breaker, characterized in that it has a panel (21) provided with an indication window (22) and an indication device (1) for a circuit breaker according to any one of claims 1 to 8.

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