CN216487913U

CN216487913U - Electric operating mechanism and circuit breaker

Info

Publication number: CN216487913U
Application number: CN202121888897.8U
Authority: CN
Inventors: 卢科军; 杨安; 顾斌斌
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-05-10
Anticipated expiration: 2031-08-12

Abstract

The electric operation mechanism comprises a motor and a gear set driven by the motor, the metal bracket is arranged on the motor and comprises at least one gear, the metal bracket comprises a first supporting plate and a second supporting plate which are arranged at intervals, at least one gear shaft is arranged between the first supporting plate and the second supporting plate, a second limiting hole is arranged on the first supporting plate, a second limiting arm which is bent and extended towards one side of the first supporting plate is arranged on the second supporting plate and extends into the second limiting hole, the second limiting arm and the gear shaft are jointly supported between the first supporting plate and the second supporting plate, the gear is arranged on the gear shaft and is arranged between the first supporting plate and the second supporting plate, the circuit breaker comprises the electric operation mechanism, the electric operation mechanism can prevent deformation, and the mutual fixation of the two metal plates is completed through the second limiting arm and the gear shaft, additional supporting pieces, screws or rivets are not needed, and the device is low in cost and convenient to assemble.

Description

Electric operating mechanism and circuit breaker

Technical Field

The utility model belongs to the field of low-voltage electric appliances, and particularly relates to an electric operating mechanism and a circuit breaker.

Background

Most of the existing circuit breakers with remote automatic closing are driven by a motor and a gear mechanism. The motor and the gear mechanism are basically positioned through the plastic shell and the like, and because the plastic shell is influenced by the environment, the plastic part can deform and shrink under the extreme special environment, so that the center distance of the gear is changed, and the transmission quality of the electric operating mechanism under the extreme environment is influenced. The all-metal gear box has complex manufacturing process and high cost, lubricating grease is needed to reduce abrasion and noise, the lubricating grease can be frozen or evaporated under the conditions of high temperature and low temperature, the service life is limited, impurities are easy to stick, and the service performance of the product is influenced.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides an electric operating mechanism and a circuit breaker which are high in reliability, low in cost and convenient to assemble.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an electricity behaviour mechanism, includes the motor and by motor drive's gear train, still includes the metal support, and the metal support is installed on the motor, the gear train includes at least one gear of installing on the metal support, the metal support includes first backup pad and the second backup pad that the interval set up, is equipped with at least one gear shaft between first backup pad and the second backup pad, be equipped with the spacing hole of second in the first backup pad, the second backup pad is equipped with the spacing arm of second to the extension of first backup pad lateral buckling, and the spacing arm of second stretches into in the spacing hole of second, and the spacing arm of second and gear shaft support jointly between first backup pad and second backup pad, at least one gear is installed on the gear shaft, sets up between first backup pad and second backup pad.

Preferably, the end of the motor provided with the output shaft is provided with a motor boss surrounding the output shaft, the first support plate is provided with a first limit hole, the first limit hole is matched with the motor boss in size and sleeved on the motor boss, and the metal support is arranged on the motor.

Preferably, the gear train includes first gear and second gear, and first gear and second gear all are located between first backup pad and the second backup pad, the output shaft of motor passes first spacing hole, first gear connection is in the output shaft of motor, the second gear is installed on the gear shaft, first gear meshes with the second gear mutually.

Preferably, the gear shaft includes the support section at middle part and is located the assembly section that supports the section both ends, and the diameter of assembly section is less than the diameter that supports the section, forms spacing step face in the junction of assembly section and support section, correspond in first backup pad and the second backup pad and be equipped with respectively with first gear shaft hole of assembly section complex and second gear shaft hole, the diameter in first gear shaft hole and second gear shaft hole is less than the diameter that supports the section, supports the section and is located and is used for installing the gear between first backup pad and the second backup pad, and the assembly section at both ends passes first gear shaft hole and second gear shaft hole respectively, and supports through spacing step face first backup pad and second backup pad.

Preferably, the first support plate and the second support plate are metal support plates, and the gear is a plastic gear.

Preferably, the gear train includes a plurality of gears, is equipped with a plurality of gear shafts between first backup pad and the second backup pad, corresponds respectively in first backup pad and the second backup pad to be equipped with a plurality of first gear shaft holes and second gear shaft hole, first backup pad and second backup pad between be equipped with and install a plurality of gears on a plurality of gear shafts.

Preferably, first backup pad is close to the motor installation, be located the motor with between the second backup pad, first backup pad integrated into one piece becomes the Z style of calligraphy and buckles, including first assembly section, linkage segment and the output section that connects gradually, the one end that is equipped with the output shaft at the motor is installed to first assembly section, the linkage segment makes one side that linkage segment and output section are located the motor to a lateral buckling who is close to the motor, be equipped with the spacing hole of first spacing hole and second in the first assembly section, be equipped with the first gear shaft hole that is used for installing the gear shaft on the output section.

Preferably, the second support plate is integrally formed and comprises a second limiting arm and a second output section which are connected in a bending mode, a second gear shaft hole is formed in the second output section, and the second limiting arm and the second output section are perpendicularly connected and inserted into the second limiting hole of the first support plate.

Preferably, the first limiting hole is a circular hole, the second limiting hole is a strip-shaped hole, and the first limiting hole is positioned between the second limiting hole and the first gear shaft hole; the second limiting arm comprises a second supporting section and an inserting section located at the end of the second supporting section, the size of the inserting section is matched with the second limiting hole, and the width of the inserting section is smaller than that of the second supporting section.

The utility model also provides a circuit breaker, which comprises the electric operating mechanism, wherein a motor positioning groove is arranged in a circuit breaker shell, a motor is arranged in the motor positioning groove, at least one shell positioning hole and a shell positioning convex rib used for pressing the metal support are arranged in the circuit breaker shell, the assembly section of the gear shaft penetrates through the outer sides of the first support plate and the second support plate to be matched with the shell positioning hole, and the shell positioning convex rib can fix the metal support of the electric operating mechanism from two sides.

According to the electric operating mechanism, the metal support is arranged on the motor, the gear set is arranged between the first supporting plate and the second supporting plate of the metal support, the metal support is high in reliability and can prevent deformation, the gear center distance is ensured not to be changed by the change of an external environment, and the influence of deformation on the gear structure meshing is avoided; and be equipped with the spacing arm of second of buckling to first backup pad in the second backup pad, accomplish the reciprocal anchorage of two metal sheets through the gear shaft between spacing arm of second and first backup pad and the second backup pad, can need not extra support piece, screw or rivet, with low costs and convenient assembling.

In addition, the gear is a plastic shell gear, is low in cost and has self-lubricating property, and lubricating oil is not needed.

Drawings

FIG. 1 is an assembly view of an embodiment of an electrically operated mechanism of the present invention;

FIG. 2 is a partial assembly view of an electrically operated mechanism embodiment of the present invention;

FIG. 3 is a schematic view of a first support plate of an embodiment of the electric operating mechanism of the present invention;

FIG. 4 is a schematic structural view of a second support plate of the electric operating mechanism of the present invention;

fig. 5 is a schematic structural view of a gear shaft of the electric operating mechanism of the present invention.

Detailed Description

The following description will further describe the specific embodiments of the electrically operated mechanism according to the present invention with reference to the embodiments shown in the drawings. The electric operation mechanism of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1-2, an embodiment of an electrically operated mechanism may be disposed within a circuit breaker for actuating the circuit breaker to close and/or open. The electric operation mechanism comprises a motor 1 and a gear set, the motor 1 drives the gear set, and a handle mechanism or an operating mechanism or a button mechanism of the circuit breaker is driven through the gear set to realize automatic opening and closing of the circuit breaker.

The electricity of this embodiment is operated the mechanism and is included motor 1, gear train and metal support, and metal support installs on motor 1, the gear train includes at least one gear, at least one gear sets up on metal support, metal support includes first backup pad 21 and the second backup pad 22 that the interval set up, is equipped with at least one gear shaft 23 between first backup pad 21 and the second backup pad 22, be equipped with the spacing hole 212 of second on the first backup pad 21, the second backup pad 22 is equipped with the spacing arm 221 of second that extends to first backup pad 21 lateral buckling, and the spacing arm 221 of second stretches into in the spacing hole 212 of second, and the spacing arm 221 of second and gear shaft 23 support jointly between first backup pad 21 and second backup pad 22, at least one gear is installed on gear shaft 23, sets up between first backup pad 21 and second backup pad 22. The metal support is high in reliability and can prevent deformation, the gear center distance is ensured not to be changed by the change of an external environment, and the influence of deformation on the gear structure meshing is avoided; and be equipped with the spacing arm 221 of second of buckling to first backup pad 21 in the second backup pad, accomplish the reciprocal anchorage of two metal sheets through gear shaft 23 between spacing arm 221 of second and first backup pad and the second backup pad, can need not extra support piece, screw or rivet, with low costs and convenient assembling.

Preferably, first backup pad 21 and second backup pad 22 are metal support plate, and metal support plate can prevent the deformation, the gear is moulded the shell gear, and is with low costs self-lubricating again, need not to use lubricating oil, adopts the electricity of this embodiment to behaviour the mechanism, can lean on non-deformable, need not to use lubricating oil again, easy to maintain.

Preferably, as shown in fig. 1-2, the metal bracket is mounted on the motor 1 and located at one end of the motor 1 where the output shaft is provided, the end of the motor 1 where the output shaft is provided with a motor boss 11 surrounding the output shaft, the first support plate 21 is provided with a first limit hole 211 and a second limit hole 212, the first limit hole 211 is matched with the size of the motor boss 11 and is sleeved on the motor boss 11, and the metal bracket is mounted on the motor 1. One end of the second supporting plate 22 is bent towards one side of the first supporting plate 21 and extends to form a second limiting arm 221, and the second limiting arm 221 extends into the second limiting hole 212, so that the two metal supporting plates are fixed and supported with each other.

Preferably, as shown in fig. 5, the gear shaft 23 includes a supporting section at the middle part and assembling sections 232 located at both ends of the supporting section, the diameter of the assembling sections 232 is smaller than that of the supporting section, a limit step surface 233 is formed at the joint of the assembling sections 232 and the supporting section, a first gear shaft hole 213 and a second gear shaft hole 222 which are matched with the assembling sections 232 are correspondingly and respectively arranged on the first supporting plate 21 and the second supporting plate 22, the diameters of the first gear shaft hole 213 and the second gear shaft hole 222 are smaller than that of the supporting section, the supporting section is located between the first supporting plate 21 and the second supporting plate 22 and is used for mounting a gear, the assembling sections 232 at both ends respectively pass through the first gear shaft hole 213 and the second gear shaft hole 222, and the first supporting plate 21 and the second supporting plate 22 are supported by the limit step surface 233.

Preferably, as shown in fig. 1-2, the gear set includes at least two gears, at least two gears being located between the first support plate 21 and the second support plate 22. As shown in fig. 2, the gear set includes a first gear 31 and a second gear 32, the first gear 31 and the second gear 32 are both located between the first support plate 21 and the second support plate 22, the first support plate 21 is provided with a first limiting hole 211, the output shaft of the motor 1 passes through the first limiting hole 211, the first limiting hole 211 is sleeved on the motor boss 11 for limiting, the first gear 31 is connected to the output shaft of the motor 1, a gear shaft 23 is provided between the first support plate 21 and the second support plate 22, the second gear 32 is installed on the gear shaft 23, and the first gear 31 is meshed with the second gear 32. The motor 1 rotates to drive the first gear 31 to rotate and transmit the rotation to the second gear 32, so that the second gear 32 rotates.

Preferably, as shown in fig. 2, the gear set includes a plurality of gears, a plurality of gear shafts 23 are disposed between the first support plate 21 and the second support plate 22, a plurality of first gear shaft holes 213 and a plurality of second gear shaft holes 222 are correspondingly disposed on the first support plate 21 and the second support plate 22, respectively, and a plurality of gears mounted on the plurality of gear shafts 23 are disposed between the first support plate 21 and the second support plate 22. Four gear shafts 23 are arranged between the first support plate 21 and the second support plate 22, and four first gear shaft holes 213 and four second gear shaft holes 222 are correspondingly arranged on the first support plate 21 and the second support plate 22 respectively. A plurality of gears are arranged between the first support plate 21 and the second support plate 22 and mounted on a plurality of gear shafts 23, and a first gear 31, a second gear 32 and a third gear 33 are shown in the figure, but a fourth gear and a fifth gear can be arranged according to the requirement. The first gear 31 is meshed with the second gear 32, a second synchronous gear is concentrically arranged on the second gear 32 and is meshed with a third gear 33, a third synchronous gear is concentrically arranged on the third gear 33 and can be meshed with a fourth gear, and so on. The diameter of the second synchronizing gear is smaller than the second gear 22 in this embodiment, but it may be larger than the second gear 22 if necessary.

Preferably, as shown in fig. 3, the first support plate 21 is installed close to the motor 1 and located between the motor 1 and the second support plate 22, and the first support plate 21 is provided with a first position-limiting hole 211, a second position-limiting hole 212 and a plurality of first gear shaft holes 213. The first supporting plate 21 is integrally formed into a zigzag shape and bent, and comprises a first assembling section 214, a connecting section 215 and an output section 216 which are sequentially connected, wherein the first assembling section 214 is installed at one end of the motor 1, which is provided with an output shaft, the connecting section 215 is bent towards one side close to the motor 1, so that the connecting section 215 and the output section 216 are located at one side of the motor 1 and used for installing other gears except the first gear 31, and the overall height of the motor mechanism 2 is reduced; the first and second position-limiting

holes

211 and 212 are formed in the first mounting section 214, and a plurality of first gear shaft holes 213 are formed in the output section 216. Preferably, the first limiting hole 211 is a circular hole, the second limiting hole 212 is a strip-shaped hole, and the first limiting hole 211 is located between the second limiting hole 212 and the plurality of first gear shaft holes 213.

Preferably, as shown in fig. 4, the second support plate 22 is integrally formed into an L shape, and includes a second limiting arm 221 and a second output section 223 that are connected in a bent manner, the second output section 223 is provided with a plurality of second gear shaft holes 222, and the second limiting arm 221 and the second output section 223 are vertically connected and inserted into the second limiting hole 212 of the first support plate 21, so that the two metal support plates are fixed and supported to each other. Preferably, the second position-limiting arm 221 is sheet-shaped, the second position-limiting arm 221 includes a second supporting section and an inserting section located at an end of the second supporting section, the inserting section has a size matched with the second position-limiting hole 212, and a width of the inserting section is smaller than a width of the second supporting section.

The utility model also provides a circuit breaker, which comprises the electric operating mechanism, wherein the electric operating mechanism is used for driving the circuit breaker to be switched on and/or switched off. Be equipped with the motor constant head tank in the circuit breaker casing, motor 1 installs in the motor constant head tank, is equipped with at least one casing locating hole in the circuit breaker casing and is used for compressing tightly the protruding muscle of casing location of metal support, the assembly section 232 of gear shaft 23 wear first backup pad 21 and second backup pad 22 the outside with the cooperation of casing locating hole, the location that realizes the electricity and hold the mechanism and the protruding muscle of casing location can be fixed with the metal support of electricity manipulation mechanism from both sides. It should be noted that the electric operating mechanism of the present invention can also be used for other types of switching appliances.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.

Claims

1. An electric operating mechanism comprises a motor (1) and a gear set driven by the motor (1), and is characterized in that: also comprises a metal bracket which is arranged on the motor (1), the gear set comprises at least one gear which is arranged on the metal bracket, the metal bracket comprises a first supporting plate (21) and a second supporting plate (22) which are arranged at intervals, at least one gear shaft (23) is arranged between the first supporting plate (21) and the second supporting plate (22), a second limiting hole (212) is formed in the first supporting plate (21), a second limiting arm (221) which is bent and extends towards one side of the first supporting plate (21) is arranged on the second supporting plate (22), the second limiting arm (221) extends into the second limiting hole (212), the second limiting arm (221) and the gear shaft (23) are jointly supported between the first supporting plate (21) and the second supporting plate (22), the at least one gear is mounted on a gear shaft (23) and is disposed between the first support plate (21) and the second support plate (22).

2. An electrically operated mechanism according to claim 1, wherein: the motor is characterized in that one end of the motor (1) provided with the output shaft is provided with a motor boss (11) surrounding the output shaft, a first limiting hole (211) is formed in the first supporting plate (21), the first limiting hole (211) is matched with the motor boss (11) in size, the motor boss (11) is sleeved with the first limiting hole (211), and the metal support is installed on the motor (1).

3. An electrically operated mechanism according to claim 2, wherein: the gear train includes first gear (31) and second gear (32), and first gear (31) and second gear (32) all are located between first backup pad (21) and second backup pad (22), the output shaft of motor (1) passes first spacing hole (211), first gear (31) are connected in the output shaft of motor (1), second gear (32) are installed on gear shaft (23), first gear (31) and second gear (32) mesh mutually.

4. An electrically operated mechanism according to claim 1, wherein: the gear shaft (23) comprises a supporting section at the middle part and assembling sections (232) positioned at the two ends of the supporting section, the diameter of each assembling section (232) is smaller than that of the supporting section, a limiting step surface (233) is formed at the joint of the assembling section (232) and the supporting section, a first gear shaft hole (213) and a second gear shaft hole (222) which are matched with the assembling section (232) are correspondingly and respectively arranged on the first supporting plate (21) and the second supporting plate (22), the diameters of the first gear shaft hole (213) and the second gear shaft hole (222) are smaller than the diameter of the supporting section, the supporting section is positioned between the first supporting plate (21) and the second supporting plate (22) and is used for mounting a gear, the assembling sections (232) at two ends respectively pass through the first gear shaft hole (213) and the second gear shaft hole (222), and the first support plate (21) and the second support plate (22) are supported by a limit step surface (233).

5. An electrically operated mechanism according to claim 1, wherein: the first supporting plate (21) and the second supporting plate (22) are metal supporting plates, and the gear is a plastic gear.

6. An electrically operated mechanism according to claim 1, wherein: the gear train includes a plurality of gears, is equipped with a plurality of gear shafts (23) between first backup pad (21) and second backup pad (22), corresponds respectively on first backup pad (21) and second backup pad (22) and is equipped with a plurality of first gear shaft holes (213) and second gear shaft hole (222), first backup pad (21) and second backup pad (22) between be equipped with a plurality of gears of installing on a plurality of gear shafts (23).

7. An electrically operated mechanism according to claim 2, wherein: first backup pad (21) are close to motor (1) installation, be located motor (1) and between second backup pad (22), first backup pad (21) integrated into one piece Z style of calligraphy is buckled, including first assembly section (214), linkage segment (215) and the output section (216) that connect gradually, one end that motor (1) was equipped with the output shaft is installed in first assembly section (214), one side that linkage segment (215) made linkage segment (215) and output section (216) be located motor (1) to the lateral buckling that is close to motor (1), be equipped with first spacing hole (211) and the spacing hole of second (212) on first assembly section (214), be equipped with first pinion shaft hole (213) that are used for installing gear shaft (23) on output section (216).

8. An electric operating mechanism according to claim 1 or 7, characterized in that: second backup pad (22) integrated into one piece is equipped with second gear shaft hole (222) including spacing arm of second (221) and second output section (223) of buckling connection on second output section (223), and spacing arm of second (221) is connected perpendicularly with second output section (223) and is inserted in spacing hole of second (212) of first backup pad (21).

9. An electrically operated mechanism according to claim 7 wherein: the first limiting hole (211) is a circular hole, the second limiting hole (212) is a long-strip-shaped hole, and the first limiting hole (211) is positioned between the second limiting hole (212) and the first gear shaft hole (213); the second limiting arm (221) comprises a second supporting section and an inserting section located at the end of the second supporting section, the size of the inserting section is matched with that of the second limiting hole (212), and the width of the inserting section is smaller than that of the second supporting section.

10. A circuit breaker, characterized by: the electric operating mechanism comprises the electric operating mechanism as claimed in any one of claims 1 to 9, a motor positioning groove is arranged in the circuit breaker shell, the motor (1) is installed in the motor positioning groove, at least one shell positioning hole and a shell positioning convex rib for pressing the metal support are arranged in the circuit breaker shell, the assembling section (232) of the gear shaft (23) penetrates through the outer sides of the first supporting plate (21) and the second supporting plate (22) to be matched with the shell positioning hole, and the shell positioning convex rib can fix the metal support of the electric operating mechanism from two sides.