CN205911272U - External miniature circuit breaker operating device of electric energy meter - Google Patents

Abstract

An operating mechanism for an external small circuit breaker of an electric energy meter, which includes a casing (1), a circuit breaker handle (2) installed in the casing (1), and a shaft part (301) of a linkage rotating shaft (3) mounted in the casing (1 ), the circuit breaker handle (2) is set on the shaft part (302) of the linkage shaft (3), and the linkage shaft (3) is connected with the contact mechanism (5) through the connecting rod (4). In the utility model, when the handle of the circuit breaker is stopped at any position, the handle of the circuit breaker can be manually operated to close or disconnect, so that the circuit breaker is clearly in the closed or disconnected position, and the safety of disconnection of the circuit breaker is improved.

Description

An operating mechanism for an external miniature circuit breaker of an electric energy meter

technical field

The utility model belongs to the technical field of circuit breakers, and in particular relates to an operating mechanism of a small circuit breaker with an external electric energy meter, which can improve the breaking safety of the circuit breaker.

Background technique

Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breaker, also known as automatic switch, commonly known as "air switch", also refers to low-voltage circuit breaker. It is an electrical appliance that not only has the function of manual switch, but also can automatically protect against voltage loss, undervoltage, overload, and short circuit. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, etc., and can automatically cut off the circuit when they have severe overload, short circuit and undervoltage faults. Its function is equivalent to a fuse switch and The combination of overheating and underheating relays, etc., and generally does not need to change parts after breaking the fault current, has been widely used.

Low-voltage circuit breakers are divided into miniature circuit breakers, molded case circuit breakers and air circuit breakers according to their scope of use. In theory, it is equivalent to the combination of fuse and relay, and generally does not need to change parts after breaking the fault current, and has been widely used.

At present, many small circuit breakers with external electric energy meters use the manual operating device of the circuit breaker and the electric operating device to be completely fixedly connected to perform opening and closing operations. The operation of the operating device can only close the circuit breaker but not open the circuit breaker, resulting in unclear closing or opening positions of the circuit breaker and prone to misoperation.

Utility model content

The purpose of this utility model is aimed at the external circuit breaker of the existing electric energy meter. When the circuit breaker is in the closing command, the manual operation device of the circuit breaker may stop at the middle position. The technical defect of operating the manual operating device can only close the circuit breaker but not open the circuit breaker. An external small circuit breaker operating mechanism for the electric energy meter is provided, so that when the circuit breaker handle stops at any position, the circuit breaker handle can be manually operated to close Or disconnection operation, so that the circuit breaker is clearly in the closed or disconnected position, improving the safety of circuit breaker breaking.

Technical solutions

In order to achieve the above technical purpose, the utility model designs an external small circuit breaker operating mechanism for electric energy meters, which includes a casing, the circuit breaker handle is installed in the casing, and the shaft part of the linkage shaft is installed in the installation shaft hole of the casing. The handle of the circuit breaker is set on the rotating shaft of the linkage rotating shaft, and the linkage rotating shaft is connected with the contact mechanism through a connecting rod. It is characterized in that:

A first boss is provided on the end surface of the mouth of the handle of the circuit breaker, and a second boss is arranged on the end surface of the mouth of the rotating shaft of the linkage shaft corresponding to the first boss, and the first boss and the second boss pass through The spring presses and fits tightly, and the spring is set on the shaft part. The clockwise rotation of the circuit breaker handle can drive the linkage shaft to rotate clockwise through the spring, and the counterclockwise rotation of the linkage shaft can drive the circuit breaker handle to rotate counterclockwise through the spring, breaking the circuit During the counterclockwise rotation of the breaker handle, the first boss can drive the linkage shaft to rotate counterclockwise, and the second boss can drive the circuit breaker handle to rotate clockwise during the clockwise rotation of the linkage shaft.

The shaft portion of the interlocking shaft is provided with a third boss, and the housing is provided with a fourth boss corresponding to the third boss. During the counterclockwise rotation of the interlocking shaft, the fourth boss can limit the stroke of the third boss. ;

The fifth boss is provided on the outer circle of the handle of the circuit breaker, and the sixth boss is provided on the contact mechanism corresponding to the fifth boss, and the sixth boss can be pushed during the clockwise rotation of the circuit breaker handle. Unlock the contact mechanism.

Further, the contact mechanism includes a free release mechanism, and a round hole 502a is provided on the free release mechanism.

Further, the circular hole is linked with the electric operating device.

Further, the connecting rod is U-shaped.

Further, the upper end of the spring rides on the outside of the first boss on the handle of the circuit breaker, and the lower end of the spring 6 rides on the linkage rotating shaft.

Beneficial effect

The utility model provides an operating mechanism for a small circuit breaker with an external electric energy meter. When the handle of the circuit breaker is stopped at any position, the handle of the circuit breaker can be manually operated to close or disconnect, so that the circuit breaker is clearly in the closed or disconnected position. , Improve the safety of circuit breaker breaking.

Description of drawings

Accompanying drawing 1 is the product diagram of the handle of the operating mechanism of the circuit breaker in the embodiment of the utility model;

Accompanying drawing 2 is the explosion diagram of the handle of the operating mechanism of the circuit breaker in the embodiment of the utility model;

Accompanying drawing 3 is the structural diagram of the operating mechanism when the circuit breaker is closed in the embodiment of the utility model;

Accompanying drawing 4 is the schematic diagram of manual tripping of the operating mechanism when the circuit breaker is in the closed state in the embodiment of the utility model;

Accompanying drawing 5 is a schematic diagram of the state after the manual tripping of the operating mechanism when the circuit breaker is in the closed state according to the embodiment of the utility model;

Accompanying drawing 6 is the state diagram of the operating mechanism in the casing when the circuit breaker is in the closed state according to the embodiment of the utility model;

Accompanying drawing 7 is the state diagram of the operating mechanism in the casing when the circuit breaker is in the disconnected state according to the embodiment of the utility model;

Accompanying drawing 8 is the schematic diagram of the spring installation structure in the embodiment of the utility model.

detailed description

Below in conjunction with accompanying drawing and embodiment, the utility model is described further.

Example

As shown in accompanying drawings 1 to 8, a small circuit breaker operating mechanism with an external electric energy meter includes a housing 1, a circuit breaker handle 2 is installed in the housing 1, and the shaft part 301 of the linkage rotating shaft 3 is installed in the installation of the housing 1. In the shaft hole 102, the circuit breaker handle 2 is set on the shaft part 302 of the interlocking shaft 3, and the interlocking shaft 3 is connected with the contact mechanism 5 through the U-shaped connecting rod 4, and the characteristics are as follows:

A first boss 201 is provided on the end surface of the mouth of the breaker handle 2, and a second boss 302a is provided on the mouth end surface of the shaft portion 302 of the linkage shaft 3 corresponding to the first boss 201. 201 and the second boss 302a are tightly pressed by the spring 6, the spring 6 is set on the shaft part 301, the upper end of the spring 6 rests on the outside of the first boss 201 on the handle 2 of the circuit breaker, and the lower end of the spring 6 Ride on the linkage rotating shaft 3. The clockwise rotation of the circuit breaker handle 2 can drive the linkage shaft 3 to rotate clockwise through the spring 6, and the counterclockwise rotation of the linkage shaft 3 can drive the circuit breaker handle 2 to rotate counterclockwise through the spring 6. During the counterclockwise rotation of the circuit breaker handle 2, it can The first boss 201 drives the linkage shaft 3 to rotate counterclockwise, and the second boss 302a can drive the circuit breaker handle 2 to rotate clockwise during the clockwise rotation of the linkage shaft 3;

The shaft portion 302 of the interlocking shaft 3 is provided with a third boss 302b, and the housing 1 is provided with a fourth boss 103 corresponding to the third boss 302b, and the fourth boss 103 is provided during the counterclockwise rotation of the interlocking shaft 3 103 can limit the stroke of the third boss 302b;

The fifth boss 202 is provided on the outer surface of the circuit breaker handle 2, and the sixth boss 501 is provided on the contact mechanism 5 corresponding to the fifth boss 202. During the clockwise rotation of the circuit breaker handle 2 The sixth boss 501 can be pushed to unlock the contact mechanism 5 .

The contact mechanism 5 includes a free tripping mechanism 502, a circular hole 502a is provided on the free tripping mechanism 502, and a seventh boss 502b is arranged on the free tripping mechanism 502, and the seventh boss 502b is used for short circuit protection. The point of action where the electromagnetic release pushes the free tripping mechanism. The round hole 502a is linked with other poles of the electric operating device or multi-pole circuit breaker.

The working principle of the utility model is: during the closing operation of the electric operating device, the electric operating device drives the linkage rotating shaft 3 to rotate counterclockwise, and the linkage rotating shaft 3 drives the contact mechanism 5 to rotate clockwise through the U-shaped connecting rod 4 to close the circuit breaker; At the same time, the linkage shaft 3 drives the handle 2 to rotate counterclockwise to the closed position through the spring 6; during the disconnection operation of the electric operation device, the linkage shaft on the electric operation device or the circuit breaker pushes the round hole of the free release mechanism 502 of the contact mechanism 5 502a makes the free tripping mechanism 502 on the contact mechanism 5 trip, and the circuit breaker is disconnected; when the circuit breaker is closed manually, the handle 2 is manually operated to rotate the handle 2 counterclockwise, and the handle 2 is pushed through the boss 201 for linkage The boss 302a on the rotating shaft 3 makes the interlocking rotating shaft 3 rotate counterclockwise, and the interlocking rotating shaft 3 drives the contact mechanism 5 to rotate clockwise through the transmission of the U-shaped connecting rod 4 to close the circuit breaker. When manually disconnecting the circuit breaker, operate the circuit breaker handle 2 clockwise and drive the linkage shaft 3 to rotate clockwise through the spring 6, and the linkage shaft 3 drives the contact mechanism 5 to rotate counterclockwise through the U-shaped connecting rod 4 to disconnect the circuit breaker; When the circuit breaker handle stops at the middle position, when the circuit breaker is manually closed, operate the circuit breaker handle 2 counterclockwise, and the circuit breaker handle 2 pushes the second boss 302a on the linkage shaft 3 through the first boss 201, so that the linkage shaft 3 Rotating counterclockwise, the linkage rotating shaft 3 drives the contact mechanism 5 to rotate clockwise through the U-shaped connecting rod 4 to close the circuit breaker. The third boss 302b on the interlocking shaft 3 fits with the fourth boss 103 on the casing 1 to restrict the interlocking shaft 3 from continuing to rotate, and the circuit breaker handle 2 and the interlocking shaft 3 are both in a closed state. When the circuit breaker handle stops at the middle position, manually disconnect the circuit breaker operation. Operate the circuit breaker handle 2 clockwise and drive the handle spring to store energy. When the handle 2 turns clockwise to a position, as shown in Figure 4, the circuit breaker handle 2 The fifth boss 202 of the contact mechanism 5 will be pushed to the sixth boss 501 on the contact mechanism 5, the free release mechanism 502 in the contact mechanism 5 will trip, and the circuit breaker will be disconnected. The state after disconnection is shown in FIG. 5 .

The utility model provides an operating mechanism for a small circuit breaker with an external electric energy meter. When the handle of the circuit breaker is stopped at any position, the handle of the circuit breaker can be manually operated to close or disconnect, so that the circuit breaker is clearly in the closed or disconnected position. , Improve the safety of circuit breaker breaking.

The structures, proportions, sizes, etc. shown in the accompanying drawings of this embodiment are only used to cooperate with the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the utility model Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and the purpose of this utility model, should still fall within the scope of this invention. The technical content disclosed by the utility model must be within the scope covered. At the same time, terms such as "up", "down", "left", "right", "middle", "clockwise", and "counterclockwise" quoted in this specification are only for the convenience of description. It is not intended to limit the applicable scope of the present utility model, and the change or adjustment of its relative relationship shall also be regarded as the applicable scope of the present utility model without substantial change in the technical content.

Claims (5)

1. the external small type circuit breaker operating mechanism of a kind of electric energy meter, it includes shell (1), and circuit breaker handle (2) is contained in shell (1) Interior, the axle portion (301) of linkage rotating shaft (3) is contained in the installation axis hole (102) of shell (1), and circuit breaker handle (2) is sleeved on connection The shaft (302) of dynamic rotating shaft (3), linkage rotating shaft (3) be connected with contact mechanism (5) by connecting rod (4) it is characterised in that:

Described circuit breaker handle (2) oral area end face is provided with first boss (201), the shaft (302) of described linkage rotating shaft (3) Second boss (302a), first boss (201) and second boss are correspondingly arranged on first boss (201) on oral area end face (302a) pushed down by spring (6) and fit tightly, spring (6) is sleeved in axle portion (301), described circuit breaker handle (2) is suitable Hour hands rotate and linkage rotating shaft (3) can be driven to rotate clockwise by spring (6), and linkage rotating shaft (3) rotates counterclockwise and can lead to Crossing spring (6) drives circuit breaker handle (2) to rotate counterclockwise, and circuit breaker handle (2) can be by the during rotating counterclockwise One boss (201) drives that linkage rotating shaft (3) is inverse to be rotated clockwise, and linkage rotating shaft (3) can be by the during rotating clockwise Two boss (302a) drive circuit breaker handle (2) to rotate clockwise；

The shaft (302) of described linkage rotating shaft (3) is provided with the 3rd boss (302b), and shell (1) is provided with and the 3rd boss (302b) corresponding 4th boss (103), during described linkage rotating shaft (3) rotates counterclockwise, the 4th boss (103) can limit Make the 3rd boss (302b) stroke；

Described circuit breaker handle (2) periphery is provided with the 5th boss (202), with the 5th boss on described contact mechanism (5) (202) correspondence goes out to be provided with the 6th boss (501), and circuit breaker handle (2) can promote the 6th boss during rotating clockwise (501) contact mechanism (5) is made to unlock.

2. as claimed in claim 1 a kind of external small type circuit breaker operating mechanism of electric energy meter it is characterised in that: described contact machine Structure (5) includes free tripping mechanism (502), and free tripping mechanism (502) is provided with circular hole (502a).

3. as claimed in claim 1 a kind of external small type circuit breaker operating mechanism of electric energy meter it is characterised in that: described circular hole (502a) with electrically operated device or multipole circuit breaker linkage.

4. as claimed in claim 1 a kind of external small type circuit breaker operating mechanism of electric energy meter it is characterised in that: described connecting rod (4) it is u shape.

5. as claimed in claim 1 a kind of external small type circuit breaker operating mechanism of electric energy meter it is characterised in that: described spring (6) upper end rides over the outside of the first boss (201) on circuit breaker handle (2), and the lower end of spring (6) rides over linkage rotating shaft (3) on.