CN110299256B - Self-resetting clutch positioning device, electric operating mechanism and circuit breaker - Google Patents
Self-resetting clutch positioning device, electric operating mechanism and circuit breaker Download PDFInfo
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- CN110299256B CN110299256B CN201910684873.1A CN201910684873A CN110299256B CN 110299256 B CN110299256 B CN 110299256B CN 201910684873 A CN201910684873 A CN 201910684873A CN 110299256 B CN110299256 B CN 110299256B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 57
- 230000005540 biological transmission Effects 0.000 claims description 81
- 230000009467 reduction Effects 0.000 claims description 53
- 239000000758 substrate Substances 0.000 claims description 42
- 238000003825 pressing Methods 0.000 claims description 20
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 239000012634 fragment Substances 0.000 claims 3
- 238000006243 chemical reaction Methods 0.000 description 12
- 230000000670 limiting effect Effects 0.000 description 11
- 230000006872 improvement Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 206010066054 Dysmorphism Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
- H01H3/58—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch
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Abstract
The invention relates to a self-resetting clutch positioning device, an electric operating mechanism and a circuit breaker. The clutch positioning device can realize automatic resetting through the restoring force of the restoring spring, and has the advantages of ingenious design, convenient assembly and simple use.
Description
Technical Field
The invention relates to a self-resetting clutch positioning device, an electric operating mechanism and a circuit breaker.
Background
The clutch device of the existing circuit breaker electric operating mechanism generally adopts a hard-link structure, namely fixed positioning points are respectively arranged in the meshing and separating states of a gear and a rack of the electric operating mechanism, and the purpose of meshing or separating is achieved by adjusting the gear and the rack to the fixed positioning points.
And generally, the engagement operation is automatic, and in the engagement operation, engagement may fail, and the situation that the tooth top of the gear is opposite to the tooth top of the rack is extremely easy to occur, so that the electric operating mechanism cannot operate.
Disclosure of Invention
The invention aims to solve the technical problem of providing a self-resetting clutch positioning device for realizing the engagement and disengagement operation of an electric operating mechanism, when the self-resetting clutch positioning device is engaged, if the self-resetting clutch positioning device cannot be directly engaged, the reset spring stores torsion energy, and after a motor is switched on, the electric operating mechanism is automatically engaged by the restoring force of the reset spring.
In order to solve the technical problems, the self-resetting clutch positioning device, the electric operating mechanism and the circuit breaker are realized by the following technical scheme:
The invention provides a self-resetting clutch positioning device which comprises a clutch positioning device and an eccentric wheel, wherein the clutch positioning device comprises a transmission shaft, a positioning column, a reset spring and a positioning elastic piece, the upper part of the transmission shaft is connected into the positioning column, the reset spring is sleeved on the upper part of the transmission shaft, one end of the reset spring is connected with the transmission shaft and the positioning column, the positioning elastic piece is arranged at the bottom of the positioning column, the bottom of the transmission column penetrates through the positioning elastic piece to be fixedly connected with the eccentric wheel, and the eccentric wheel can enable an electric operating mechanism to realize clutch. Through above-mentioned technical scheme, the locating column drives the transmission shaft and rotates, and when there is rotation angle difference between transmission shaft and the locating column, reset spring stores torsion energy, releases the energy through reset spring, realizes clutch positioner's self-resetting function, and the eccentric wheel rotates the assigned position.
As a further improvement of the invention, a clamping column is arranged in the positioning column, a groove is formed in the upper portion of the transmission shaft, the clamping column is inserted into the groove, the clamping column is in clearance fit with the groove, and the bottom end of the return spring is arranged in the groove in a penetrating mode. Through the technical scheme, the transmission shaft and the positioning column can have a rotation angle difference; the clamping post can prevent the reset spring positioned in the groove from moving upwards.
As a further improvement of the invention, the outer wall of the positioning column is provided with a positioning groove, and two ends of the return spring are respectively arranged in the positioning groove. Through above-mentioned technical scheme, the reference column can drive the spring rotation, and the constant head tank both can be used for installing reset spring's one end, also is convenient for the spring to get into the reference column from the constant head tank.
As a further improvement of the invention, the outer wall of the positioning column is provided with at least two transmission positioning convex columns, and the bottom of each transmission positioning convex column protrudes downwards and penetrates through the corresponding positioning elastic sheet so that the corresponding positioning elastic sheet rotates along with the corresponding positioning column. Through the technical scheme, the transmission positioning convex column can drive the positioning elastic sheet to rotate.
As a further improvement of the invention, the positioning elastic sheet comprises a plugging part and an abutting part, wherein the plugging part and the abutting part are respectively provided with at least two parts, the plugging part and the abutting part are sequentially and alternately connected to form a three-dimensional circular ring with the plugging part higher than the abutting part, the plugging part is provided with a transmission positioning hole, the transmission positioning convex column penetrates through the transmission positioning hole, the abutting part is provided with a sunken positioning boss, the abutting part abuts against a mounting substrate of the electric operating mechanism, and the positioning boss is positioned on the mounting substrate. Through the technical scheme, the positioning spring piece plays a role in supporting the positioning column; whether the positioning boss is matched with the positioning point of the mounting substrate or not indicates whether the engagement of the electric operating mechanism is successful or not, and the positioning boss plays an indicating role.
As a further improvement of the invention, the clutch positioning device further comprises a knob, wherein the bottom of the knob is provided with a convex column, the top of the positioning column is provided with a clamping groove, the convex column is clamped in the clamping groove, and the positioning column rotates along with the knob. Through the technical scheme, the knob is convenient to manually twist.
As a further improvement of the invention, the upper part of the positioning column is provided with a pressing plate, the pressing plate is sleeved on the upper part of the positioning column, and the pressing plate is connected with the mounting substrate through a fastener. Through above-mentioned technical scheme, the clamp plate plays vertical spacing effect to the reference column.
As a further improvement of the invention, the eccentric wheel comprises an upper eccentric wheel and a lower eccentric wheel which are fixedly connected, the diameter of the upper eccentric wheel is smaller than that of the lower eccentric wheel, the eccentric wheel is provided with a long strip-shaped through groove, the lower part of the transmission shaft is provided with a rectangular cylinder, and the rectangular cylinder of the transmission shaft is clamped in the long strip-shaped through groove. Through the technical scheme, the eccentric wheel is fixedly connected with the transmission shaft, and the transmission shaft can drive the eccentric wheel to rotate; the eccentric wheel comprises two eccentric wheels with different areas, and has a longitudinal limiting effect on a gear motor fixing plate of the electric operating mechanism.
In order to solve the technical problems, the invention also provides an electric operating mechanism which comprises a mounting base plate, a sliding toothed plate, a box fixing cover and a gear reduction box; the self-resetting clutch positioning device is arranged on the mounting substrate, the sliding toothed plate can be meshed with a gear of the gear reduction box so as to push a handle of the circuit breaker to move, the gear reduction box is fixedly connected with the gear reduction motor fixing plate, the gear reduction motor fixing plate is rotationally connected with the mounting substrate, the gear reduction motor fixing plate is provided with a U-shaped groove, the upper eccentric wheel is clamped in the U-shaped groove, the lower eccentric wheel is abutted to the bottom surface of the U-shaped groove, the positioning elastic piece of the electric operating mechanism is abutted to the mounting substrate, and the eccentric wheel can drive the gear reduction motor fixing plate and the gear reduction box to rotate so as to enable gears of the sliding toothed plate and the gear reduction box to be meshed or separated. Through the technical scheme, the eccentric wheel of the self-resetting clutch positioning device drives the gear motor fixing plate to rotate until the gear and the rack of the electric operating mechanism are successfully meshed.
In order to solve the technical problems, the invention also provides a circuit breaker which comprises a bottom box, a middle cover, an upper cover and a handle, wherein the middle cover is covered on the upper part of the bottom box, the upper cover is covered on the upper part of the middle cover, the middle cover is provided with the electric operating mechanism, the mounting substrate is fastened on the middle cover, the upper part of the electric operating mechanism is connected with a circuit board, the circuit board is arranged at the bottom of the upper cover, the upper part of the handle sequentially penetrates through the middle cover, the electric operating mechanism, the circuit board and the upper cover, and the circuit breaker realizes opening and closing operation along with the reciprocating motion of the handle. Through the technical scheme, the gear and the rack of the electric operating mechanism are easy to engage, the use state of the circuit breaker is stable, and the reliability of the circuit breaker is improved.
According to the self-resetting clutch positioning device, the electric operating mechanism and the circuit breaker, when the electric operating mechanism is not successfully meshed, the electric operating mechanism is successfully meshed through the self-resetting function of the clutch positioning device, the service lives of the gear and the rack are prolonged, and the service life of the circuit breaker is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a clutch-type electric operating mechanism according to embodiment 1 of the present invention.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a schematic view of the mounting substrate structure of fig. 1.
Fig. 4 is a schematic view of the sliding toothed plate structure of fig. 1.
Fig. 5 is a schematic view of a fixed plate structure of the gear motor of fig. 1.
Fig. 6 is a schematic view of the gear reduction box of fig. 1.
Fig. 7 is a structural diagram of the conversion structure of fig. 1.
Fig. 8 is a schematic view of the mounting structure of the drive shaft and return spring of fig. 7.
Fig. 9 is a schematic view of the positioning post structure of fig. 7.
Fig. 10 is a schematic view of the positioning spring of fig. 7.
Fig. 11 is a schematic structural diagram of a clutch-type electric operating mechanism according to embodiment 2 of the present invention.
Fig. 12 is an exploded view of a circuit breaker according to embodiment 3 of the present invention.
Fig. 13 is a schematic view of a partially exploded structure according to embodiment 3 of the present invention.
Fig. 14 is a full sectional view of the circuit breaker provided in embodiment 3 of the present invention.
In the figure: 1. a circuit breaker; 1-1, a bottom box; 1-2, a middle cover; 1-3, an upper cover; 1-4, a circuit board; 1-11, a static contact; 1-12, a moving contact; 1-21, through grooves; 2. a mounting substrate; 2-1, a first mounting portion; 2-2, a second mounting part; 2-11, a first through groove; 2-13, a first limiting piece; 2-14, hollow convex columns; 2-15, boss; 2-21, a second through groove; 2-22, fixing the cover mounting hole; 2-23, positioning holes; 3. sliding toothed plates; 3-1, a handle pushing part; 3-2, a transmission part; 3-11, a third through groove; 3-13, a supporting arm; 3-14, push rod; 3-16, a handle transmission shaft; 3-21, a chute; 3-22, a rack; 4. a rack pressing plate; 4-1, grooves; 5. a gear motor fixing plate; 5-1, a connecting part; 5-2, a covering part; 5-11, U-shaped grooves; 5-22, a first through hole; 6. a gear reduction box; 6-1, a box body; 6-2, upper cover; 6-3, a first gear set; 6-4, a second gear set; 6-5, a third gear set; 6-6, a fourth gear set; 6-11, lugs; 6-111, through hole II; 7. A conversion mechanism; 7-1, a clutch positioning device; 7-2, eccentric wheel; 7-11, a transmission shaft; 7-12, a knob; 7-13, positioning columns; 7-14, a return spring; 7-15, positioning spring plates; 7-16, pressing plate; 7-21, upper eccentric wheel; 7-22, lower eccentric wheel; 7-23, a strip-shaped through groove; 7-111, grooves; 7-131, a transmission positioning convex column; 7-132, positioning grooves; 7-151, a plug-in part; 7-152, an abutting part; 7-1511, a transmission positioning hole; 7-1521, positioning bosses; 8-1, a motor output shaft; 9. a transmission pulley; 10. a handle; 10-1, an extension; 10-2, an arc-shaped part; 10-3, rocker arm.
Detailed Description
In order to further illustrate the present invention, the following drawings and preferred embodiments are provided for the detailed description of the embodiments, structures, features and effects according to the present invention.
As shown in fig. 1, in the present invention, the side of the motor fixing cover 5 is the right side, the side of the handle 10 is the left side, and the direction formed by the left side and the right side in the present description is the X-axis direction shown in fig. 1; the direction formed by the front and rear sides in this description is the Y-axis direction shown in fig. 1, with the side of the conversion mechanism 7 being the front side and the side facing away from the conversion mechanism 7 being the rear side; the direction in which the upper and lower sides of the mounting substrate 2 are formed is the Z-axis direction in fig. 1.
Example 1
As shown in fig. 1, an electric operating mechanism of the present embodiment 1 includes a mounting substrate 2, a sliding toothed plate 3, a rack pressing plate 4, a gear motor fixing plate 5, a gear reduction box 6, a switching mechanism 7 and a motor, the sliding toothed plate 3 is disposed on the left side of the mounting substrate 2, the sliding toothed plate 3 is used for pushing a handle 10 of a breaker to be opened and closed to move, the rack pressing plate 4 is disposed on the sliding toothed plate 3, the gear motor fixing plate 5 is disposed on the upper right side of the mounting substrate 2, the gear reduction box 6 is disposed on the right side of the mounting substrate 2 and connected to the lower portion of the gear reduction motor fixing plate 5, the motor is disposed in the gear reduction box 6, and the switching mechanism 7 is disposed at the junction of the mounting substrate 2 and the gear reduction motor fixing plate 5.
As shown in fig. 2 and 3, the mounting substrate 2 is an irregular thin plate, the mounting substrate 2 includes a first mounting portion 2-1 on the left side and a second mounting portion 2-2 on the right side, and the mounting substrate 2 is recessed inward on both the front side and the rear side of the first mounting portion 2-1.
The first mounting part 2-1 is provided with a first through groove 2-11 for penetrating the handle 10 in the middle, the first through groove 2-11 is rectangular, the left side of the first through groove 2-11 is connected with a rectangular through groove, the area of the rectangular through groove is smaller than that of the first through groove 2-11, the left side wall of the rectangular through groove is provided with a first limiting part 2-13 protruding upwards, the first limiting part 2-13 is approximately in an inverted L shape, the right side of the first through groove 2-11 is provided with two hollow convex columns 2-14, the hollow convex columns 2-14 are sleeved with a transmission pulley 9, the transmission pulley 9 is used for supporting the sliding toothed plate 3 to move along the Y axis direction, two bosses 2-15 are arranged between the two hollow convex columns 2-14, through holes are formed in the bosses 2-15, and the hollow convex columns 2-14 and the bosses 2-15 are arranged along the Y axis direction.
Further, the transmission pulley 9 is preferably a rolling bearing, and an oil-containing bearing or a shaft sleeve can be also selected.
The second installation department 2-2, the middle second through groove 2-21 that is equipped with, the second through groove 2-21 is can divide into three partial dysmorphism through groove in front and back along Y axle direction, and dysmorphism through groove specifically is as follows: the circular arc side wall of the circular groove at the middle part is respectively connected with the side wall of the trapezoid groove and the side wall of the rectangular groove; the outside of the front and back side walls of the second through groove 2-21 is respectively provided with a fixed cover mounting hole 2-22, wherein, both sides of the fixed cover mounting hole 2-22 positioned at the front side of the second through groove 2-21 are respectively provided with a positioning hole 2-23, the two positioning holes 2-23 and the fixed cover mounting hole 2-21 are positioned on the same straight line, and the right vertex angle of the front side of the second mounting part 2-2 is provided with a protruding block protruding downwards, thereby having a limiting function.
As shown in fig. 2 and 4, the sliding toothed plate 3 is an irregular thin plate including a handle pushing portion 3-1 located on the left side and a transmission portion 3-2 located on the right side, and the length of the handle pushing portion 3-1 in the Y-axis direction is smaller than the length of the transmission portion 3-2.
The handle pushing part 3-1, its left front end is inwards concave, be equipped with third tee bend groove 3-11 and base in the middle of handle pushing part 3-1, third tee bend groove 3-11 is inwards concave together with handle pushing part 3-1, the base includes the support arm 3-13 that is parallel to Y axle direction and is parallel to push rod 3-14 that X axle direction set up, support arm 3-13 includes left support arm and right support arm, left support arm is located the left side of third tee bend groove 3-11, right support arm 3-132 is located the right side of third tee bend groove 3-11, the length of left support arm is less than the length of right support arm, support arm 3-13 and handle pushing part 3-1 are integrated into one piece structure, push rod 3-14 is rectangular cylindric, including preceding push rod and back push rod, the both ends of preceding push rod and back push rod are connected in left support arm and right support arm respectively, thereby form the rectangle frame.
Specifically, the sliding toothed plate 3 is mounted on the upper portion of the first mounting portion 2-1 of the mounting substrate 2, the third through groove 3-11 of the sliding toothed plate 3 is opposite to the first through groove 2-11 of the first mounting portion 2-1, the handle sequentially passes through the first through groove 2-11, the third through groove 3-11 and the rectangular frame on the handle pushing portion 3-1, and the left side of the sliding toothed plate 3 is located in the first limiting piece 2-13 of the first mounting portion 2-1, so that limiting effects in the X and Z axis directions are achieved.
The transmission part 3-2 is rectangular, a strip-shaped and closed chute 3-21 is arranged in the middle of the transmission part, the hollow convex column 2-14 and the convex plate 2-15 of the first installation part 2-1 are arranged in the chute 3-21 in a penetrating way, the outer edge of the transmission pulley 9 is attached to the inner wall of the chute 3-21, and the X-axis direction limiting function of the sliding toothed plate 3 is achieved; the right side of the transmission part 3-2 is provided with a rack 3-22.
The rack pressing plate 4 is a rectangular thin plate and is arranged above the transmission part 3-2 of the sliding toothed plate 3, and the area of the rack pressing plate 4 is smaller than that of the transmission part 3-2; the middle of the rack pressing plate 4 is provided with a round hole for penetrating through the hollow convex column 2-15 of the mounting base plate 2 and is used for limiting the rack pressing plate 4 in the Y-axis direction; the middle of the rack pressing plate 4 is provided with a sunk groove 4-1, the groove 4-1 is propped against the upper part of a boss 2-15 of the mounting substrate 2, a through hole is arranged in the groove 4-1, a fastener (such as a rivet) sequentially penetrates through the boss 2-15 and the through hole of the groove 4-1 from the bottom of the mounting substrate 2, so that the rack pressing plate 4 is fastened above a transmission part 3-2 of the sliding toothed plate 3, and the rack pressing plate 4 limits the sliding toothed plate 3 in the Z-axis direction.
As shown in fig. 2 and 5, the gear motor fixing plate 5 includes a connecting portion 5-1 and a covering portion 5-2, the covering portion 5-2 is a hollow rectangular frame having only an upper side wall and front and rear side walls, the upper surface of the covering portion 5-2 protrudes to the left, a circular through groove is provided at the protruding position, and two through holes 5-22 for installing fasteners (e.g., bolts) are distributed on the front and rear sides of the upper surface of the covering portion 5-2. Four through holes 5-22 are provided, and the fastener is used for connecting the gear reduction box 6; the connecting part 5-1 is respectively connected to the front side wall and the rear side wall of the covering part 5-2 to form an L shape, the connecting part 5-1 comprises a transverse plate and a vertical plate, the vertical plate of the connecting part 5-1 is respectively clung to the inner wall of the front side and the rear side of the second through groove 2-21 of the mounting substrate 2, the transverse plate of the connecting part 5-1 is positioned at the lower part of the mounting substrate 2, the transverse plate of the connecting part 5-2 connected to the front side wall of the covering part 5-2 is provided with a U-shaped groove 5-11, the U-shaped groove 5-11 is opposite to the positioning hole 2-23 and the mounting cover mounting hole 2-22 on the front side of the mounting substrate 2, the transverse plate of the connecting part 5-2 connected to the rear side of the covering part 5-2 is provided with a through hole for mounting a fastener (screw or bolt), the fastener is fixedly connected to the rear side of the reducing motor fixing plate 5 to the mounting substrate 2, and the front side of the reducing motor fixing plate 5 and the mounting substrate 2 can relatively move.
As shown in fig. 2 and 6, the gear reduction box 6 is arranged in a second through groove 2-21 of the mounting substrate 2, can move in the direction of the X axis in the second through groove 2-21, and comprises a box body 6-1 and an upper cover 6-2, wherein the box body 6-1 is in a cylindrical shape with an open top, the upper cover 6-2 is a circular thin plate, and the upper cover 6-2 covers the upper part of the box body 6-1; the top opening of the box body 6-1 is provided with two lugs 6-11, the lugs-611 are provided with two through holes 6-111 which are opposite to the first through holes 5-22 of the gear motor fixing plate 5, the two through holes 6-111 are four in number and are connected by fasteners, so that the gear reduction box 6 is connected to the gear motor fixing plate 5, and the top of the left side of the box body 6-1 is provided with a notch.
The motor is arranged at the bottom of the box body 6-1 and provides power for the gear reduction box 6, a motor output shaft 8-1 of the motor is provided with a transmission gear, four groups of gear sets in the box body 6-1 comprise an upper coaxial gear and a lower coaxial gear, the gear sets comprise a first gear set 6-3, a second gear set 6-4, a third gear set 6-5 and a fourth gear set 6-6, the motor output shaft 8-1 is meshed with a lower gear of the first gear set 6-3, an upper gear of the first gear set 6-3 is meshed with an upper gear of the second gear set 6-4, a lower gear of the second gear set 6-4 is meshed with a lower gear of the third gear set 6-5, and an upper gear of the third gear set 6-5 is meshed with an upper gear of the fourth gear set 6-6; when the racks 3-22 of the sliding toothed plate 3 enter the notch on the left side of the box body 6-1, the lower gear of the fourth gear set 6-6 can be meshed with the racks 3-22 of the sliding toothed plate 3, so that the motor drives the sliding toothed plate 3 to move along the Y-axis direction. The motor and the gear box are combined into a whole, and the speed reducing motor is short for short.
As shown in fig. 2 and 7, the conversion mechanism 7 has a self-resetting function, is a self-resetting clutch positioning device, and comprises a clutch positioning device 7-1 and an eccentric wheel 7-2, wherein the bottom of the clutch positioning device 7-1 sequentially penetrates through a fixed cover mounting hole 2-22 and the eccentric wheel 7-2 on the front side of a mounting substrate 2 from top to bottom, and the eccentric wheel 7-2 is clamped in a U-shaped groove 5-11 of a gear motor fixing plate 5. The switching mechanism 7 is used for switching between the manual state and the automatic state of the handle 10.
As shown in fig. 7 and 8, the eccentric wheel 7-2 comprises an upper eccentric wheel 7-21 and a lower eccentric wheel 7-22, the upper eccentric wheel 7-21 and the lower eccentric wheel 7-22 are two cylinders which are coaxially arranged, the transverse diameter of the upper eccentric wheel 7-21 is smaller than that of the lower eccentric wheel 7-22, the upper eccentric wheel 7-21 and the lower eccentric wheel 7-22 are of an integrated structure, the corresponding positions of the upper eccentric wheel 7-21 and the lower eccentric wheel 7-22 deviating from the circle center are provided with long strip-shaped through grooves 7-23, the opposite side walls of the long strip-shaped through grooves 7-23 are arc-shaped, the upper eccentric wheel 7-21 is clamped in the U-shaped grooves 5-11, the lower eccentric wheel 7-22 abuts against the bottom surface of the U-shaped grooves 5-11, and plays a role of limiting the speed reducing motor fixing plate 5 in the Z-axis direction, so that the speed reducing motor fixing plate 5 can rotate by taking the long strip-shaped through grooves of the eccentric wheel 7-2 as the rotation centers.
As shown in fig. 7 and 8, the clutch positioning device 7-1 comprises a transmission shaft 7-11, the bottom of the clutch positioning device 7-1 is provided with the transmission shaft 7-11, the transmission shaft 7-11 sequentially penetrates through a fixed cover mounting hole 2-22 and a strip-shaped through groove 7-23 of the eccentric wheel 7-2 on the front side of the mounting substrate 2 from top to bottom, and the eccentric wheel 7-2 is fixed with the transmission shaft 7-11 through a screw; the upper part of the transmission column 7-11 is provided with two semi-cylinders with gaps, the circle centers of the semi-cylinders are provided with semicircular longitudinal through grooves which are concentric, and the two longitudinal through grooves form grooves 7-111; the cylinder in the middle part includes two, and one diameter is greater than the diameter of the fixed lid mounting hole 2-22 of mounting base plate 2 and sets up in mounting base plate 2 upper portion, and another diameter is slightly less than the diameter of the fixed lid mounting hole 2-22 of mounting base plate 2 and clearance fit in fixed lid mounting hole 2-22, plays the positioning action of Z axle direction to eccentric wheel 7-2, and the lower part of transmission shaft 7-11 is the rectangular cylinder that has two curved surface outer walls and bottom and is equipped with the mounting hole around, and rectangular shape and the size of going through the groove 7-23 cooperate with the lower part of transmission shaft 7-11, prevent eccentric wheel 7-2 and transmission shaft 7-11 production relative rotation.
Further, the clutch positioning device 7-1 further comprises a knob 7-12, a positioning column 7-13, a return spring 7-14 and a positioning spring piece 7-15; the locating column 7-13 sets up in the bottom of knob 7-12, reset spring 7-14 is located locating column 7-13 and both ends wear to establish at the outer wall of locating column 7-13, the upper portion of transmission shaft 7-11 wears to establish in reset spring 7-14, reset spring 7-14's one end wears to locate between two semi-cylinders in transmission shaft 7-11 upper portion and connect in locating column 7-13, as shown in FIG. 8, the bottom of here reset spring 7-14 passes recess 7-111, locating spring piece 7-15 is set up to the locating column 7-13 bottom, locating spring piece 7-15 supports and leans on mounting substrate 2, knob 7-12 can be used to manual rotation clutch positioner 7-1.
As shown in fig. 7 and 9, the positioning column 7-13 is a hollow column, the bottom of the positioning column 7-13 is in an opening shape, the top of the positioning column 7-13 is provided with a flat clamping groove, the bottom of the knob 7-12 is provided with a flat convex column, the convex column is clamped in the clamping groove, the knob 7-12 is connected with the positioning column 7-13 without relative rotation, and the knob 7-12 can drive the positioning column 7-13 to rotate; the inside of the positioning column 7-13 is provided with a clamping column inserted into a groove 7-111 of the transmission shaft 7-11, the clamping column is a cylinder, the clamping column is in clearance fit with the groove 7-111, and the clamping column can prevent the reset spring 7-14 from moving upwards; the outer wall of the positioning column 7-13 is provided with a transmission positioning convex column 7-131 and a positioning groove 7-132; at least two transmission positioning convex columns 7-131 are cylinders which are integrally arranged with the positioning columns 7-13, and the bottoms of the transmission positioning convex columns 7-131 are downwards protruded from the bottoms of the positioning columns 7-13; the positioning grooves 7-132 are L-shaped, so that the reset springs 7-14 are conveniently installed in the positioning columns 7-13, two positioning grooves 7-132 are symmetrically arranged, the transmission positioning convex columns 7-131 and the positioning grooves 7-132 are arranged in a staggered mode, two ends of each reset spring 7-14 penetrate through the two positioning grooves 7-132 respectively, and the reset springs 7-14 and the positioning columns 7-13 have interaction force.
As shown in fig. 7 and 10, the positioning spring 7-15 comprises a plugging part 7-151 and an abutting part 7-152, wherein at least two plugging parts 7-151 and at least two abutting parts 7-152 are respectively arranged, the plugging parts 7-151 are sequentially connected in a staggered manner to form a three-dimensional circular ring with the plugging parts 7-151 higher than the abutting parts 7-152, each plugging part 7-151 is provided with a transmission positioning hole 7-1511, and a transmission positioning convex column 7-131 is arranged in the transmission positioning hole 7-1511 in a penetrating manner, so that the positioning spring 7-15 can rotate along with the positioning column 7-13; each abutting part 7-152 is provided with a sunken positioning boss 7-1521, the abutting parts 7-152 abut against the mounting substrate 2, and the positioning bosses 7-1521 can be clamped with the positioning holes 2-23 of the mounting substrate 2 to play a role in supporting and positioning.
Further, the upper portion of the positioning column 7-13 is sleeved with a pressing plate 7-16, as shown in fig. 7, the pressing plate 7-16 is in contact with the upper surface of the positioning column 7-13, and the pressing plate 7-16 is fixed on the upper portion of the mounting substrate 2 by using a fastener to play a role in limiting the Z-axis direction of the positioning column 7-13 and the spring 7-14 inside the positioning column.
Specifically, in the process of meshing the clutch-type electric operating mechanism, the knob 7-12 rotates clockwise, so that the positioning column 7-13 at the bottom of the knob drives the return spring 7-14, the transmission shaft 7-11 and the eccentric wheel 7-2 to rotate simultaneously, the eccentric wheel 7-2 drives the gear motor fixing plate 5 to rotate, the gear reduction box 6 fastened by the gear reduction motor fixing plate 5 rotates to the left, meshing of the gear reduction box 6 and the racks 3-22 of the sliding toothed plate 3 is realized, and the handle 10 is switched to an automatic state. In this process, the tooth tops of the fourth gear set 6-6 of the gear reduction box 6 are meshed with the tooth grooves of the racks 3-22 of the sliding toothed plate 3 successfully. However, in the process of meshing the fourth gear set 6-6 of the gear reduction box 6 with the rack 3-22 of the sliding toothed plate 3, due to the uncertainty of the positions of the two, there is an unsuccessful meshing condition, that is, the gear reduction motor fixing plate 5 does not rotate to the left to a position capable of being successfully meshed, the eccentric wheel 7-2 controlling the rotation of the gear reduction motor fixing plate 5 does not rotate to a position capable of being successfully meshed, the positioning post 7-13 is in a position capable of being successfully meshed, at the moment, the rotation angle of the transmission shaft 7-11 connected with the eccentric wheel 7-2 is inconsistent with the rotation angle of the positioning post 7-13, so that the reset spring 7-14 connected with the transmission shaft 7-11 and the positioning post 7-13 has torsion storage due to the difference, after the rotation of the motor, the fourth gear set 6-6 is rotated, the tooth tops are staggered, the gear reduction motor fixing plate 5 drives the gear reduction box 6 to rotate to the left under the action of the torsion recovery force of the reset spring 7-14, and the fourth gear set 6-3 is completed, and the positioning boss 2-2 is meshed with the positioning boss 2-2 is matched with the positioning boss 1522. The above process is the self-resetting function of the conversion device 7.
Of course, when the tooth grooves of the fourth gear set 6-6 of the gear reduction box 6 are opposite to the tooth grooves of the rack 3-22 of the sliding toothed plate 3, generally, the gear motor fixing plate 5 is not rotated leftwards to a position where the gear motor fixing plate can be successfully meshed, and only the motor is required to rotate to drive the fourth gear set 6-6 to rotate, so that the gear motor fixing plate can be successfully meshed.
In the process of separating the clutch type electric operating mechanism, the knob 7-12 rotates anticlockwise, the positioning column 7-13 drives the reset spring 7-14, the transmission shaft 7-11 and the eccentric wheel 7-2 to rotate simultaneously, the eccentric wheel 7-2 drives the gear motor fixing plate 5 to rotate to the right, the gear reduction box 6 fastened by the gear reduction motor fixing plate 5 rotates to the right, the gear reduction box 6 is separated from the racks 3-22 of the sliding toothed plate 3, and the handle 10 is cut into a manual state.
In the clutch type electric operating mechanism in the embodiment, the motor drives the sliding toothed plate 4 to move along the Y-axis direction, and the sliding toothed plate 4 pushes the handle 10 to move, so that the handle controls the opening and closing of the circuit breaker; the motor is arranged in the gear reduction box 6, the gear reduction box 6 is connected with the gear reduction motor fixing plate 5, one side of the gear reduction motor fixing plate 5 is connected with the conversion mechanism 7, so that the gear reduction motor fixing plate 5 is driven to deflect through the rotation of the conversion mechanism 7, and the whole gear reduction box 6 is driven to move along the X-axis direction, so that the fourth gear set 6-6 can be separated from or meshed with the racks 3-22 of the sliding toothed plate 3, and the conversion of the manual state and the automatic state of the electric operation mechanism is completed; the reset spring 7-14 is arranged in the conversion mechanism 7, when the electric operating mechanism is not successfully switched from the state to the automatic state, the reset spring 7-14 stores torsion by means of the rotation angle difference between the transmission shaft 7-11 and the positioning column 7-13, after the motor drives the fourth gear set 6-6 to rotate, the reset force of the reset spring 7-14 enables the gear motor fixing plate 5 and the gear reduction box 6 to move leftwards, so that the gear reduction box 6 is successfully meshed with the racks 3-22 of the sliding toothed plate 3, and the use state of the handle 10 is successfully converted; by adopting the sliding toothed plate 3 and the gear reduction box 6, the occupied space of the electric operating mechanism can be saved.
Example 2
As shown in fig. 11, a clutch-type electric operating mechanism of this embodiment 2 is basically the same as that of embodiment 1, except that: the handle pushing part 3-1 of the sliding toothed plate 3 is not provided with the handle pushing part 3-1 and a base thereon, the right side wall of the sliding toothed plate 3 is provided with the handle transmission shaft 3-16, the handle transmission shaft 3-16 is L-shaped, the handle 10 is provided with a through hole along the X-axis direction, the transverse shaft of the handle transmission shaft 3-16 is arranged in the through hole of the handle 10 in a penetrating manner, the handle transmission shaft 3-16 is arranged in the handle 10 in a penetrating manner along the X-axis direction, the sliding toothed plate 3 drives the handle transmission shaft 3-16 to move along the Y-axis direction, and therefore the handle transmission shaft 3-16 drives the handle 10 to move along the Y-axis direction, and the opening and closing of the breaker are controlled by the handle 10.
Example 3
As shown in fig. 12, a circuit breaker 1 comprises a clutch type electric operating mechanism according to embodiment 1 or embodiment 2, and further comprises a bottom case 1-1, a middle cover 1-2, an upper cover 1-3, and a handle 10, wherein the middle cover 1-2 is covered on the upper portion of the bottom case 1-1, the upper cover 1-3 is covered on the upper portion of the middle cover 1-2, the handle 10 is connected in the bottom case 1-1 and penetrates through the middle cover 1-2, the handle 10 extends out of the upper cover 1-3 and penetrates through the mounting substrate 2, the mounting substrate 2 is arranged on the middle cover 1-3, a circuit board 1-4 for controlling the circuit breaker 1 is connected to the upper portion of the electric operating mechanism, the circuit board 1-4 is arranged at the bottom of the upper cover 1-3, and the bottom case 1-1, the middle cover 1-2 and the upper cover 1-3 form a complete rectangular box body to play a role in protection.
As shown in fig. 13, the handle 10 includes an extension portion 10-1 and an arc portion 10-2, the extension portion 10-1 and the arc portion 10-2 being of an integral structure; the extension part 10-1 is in a strip shape and sequentially penetrates through the middle cover 1-2, the electric operating mechanism, the circuit board 1-4 and the upper cover 1-3 and is used for receiving the action of external force; the arc-shaped part 10-2 is a shell with an arc shape, and the upward bulge position of the arc-shaped part is connected with the extension part 10-1, so that the handle 10 can move in an arc shape; the bottom of the arc-shaped part 10-2 is connected with a columnar rocker arm 10-3, the rocker arm 10-3 is connected with spring groups, and the spring groups are two and are arranged in parallel.
The middle cover 1-2 is a rectangular hollow shell, a groove for accommodating a motor is formed in the right side of the middle cover 1-2, a mounting seat matched with the arc-shaped part 10-2 is arranged in the middle of the middle cover 1-2, the mounting seat is provided with a through groove 1-21, and the through groove 1-21 is used for penetrating through the spring set.
The bottom case 1-1 is internally provided with a fixed contact 1-11, an arc extinguishing device and a moving contact 1-12, as shown in fig. 14, the moving contact 1-12 is connected with a spring group for preventing arc spark generated when the contacts are opened.
Specifically, the handle 10 is pushed, the handle 10 drives the rocker arm 10-3, the rocker arm 10-3 drives the spring set, and the spring set drives the moving contact 1-12 to rotate, so that the moving contact 10-3 is contacted with or separated from the fixed contact 1-11, and the opening and closing or opening of the circuit breaker 1 are realized.
The upper cover 1-3, there are display panel and control button on the upper surface, electric wire to connect conversion mechanism 7, electrical machinery, button, etc. are all connected with circuit board 1-4, can realize the full-automatic state that the circuit breaker 1 opens and shuts; the upper cover 1-2 is also provided with a strip-shaped through groove for penetrating the handle 10 and a knob hole for penetrating the knob 7-12 of the conversion mechanism 7, so that the manual operation is convenient.
The breaker of the embodiment can freely switch the handle for controlling the opening and closing of the breaker between a manual state and an automatic state, and is convenient to use; in an automatic state, the circuit breaker is provided with a switching mechanism 7 capable of automatically resetting, so that the use stability of the circuit breaker is ensured.
The present invention is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a from reset clutch positioner, its characterized in that includes clutch positioner (7-1) and eccentric wheel (7-2), clutch positioner (7-1) include transmission shaft (7-11), reference column (7-13), reset spring (7-14) and location shell fragment (7-15), transmission shaft (7-11) upper portion connect in reference column (7-13), reset spring (7-14) are located reference column (7-13) and cover locate the upper portion of transmission shaft (7-11), reset spring (7-14) connect transmission shaft (7-11) with reference column (7-13), location shell fragment (7-15) set up in reference column (7-13) bottom, transmission shaft (7-11) bottom pass reference shell fragment (7-15) fastening connection in eccentric wheel (7-2), eccentric wheel (7-2) enable electric operating mechanism to realize.
2. A self-resetting clutch positioning device as claimed in claim 1, characterized in that a clamping column is arranged in the positioning column (7-13), a groove (7-111) is formed in the upper part of the transmission shaft (7-11), the clamping column is inserted into the groove (7-111), the clamping column is in clearance fit with the groove (7-111), and the bottom end of the resetting spring (7-14) is arranged in the groove (7-111) in a penetrating manner.
3. A self-resetting clutch positioning device as claimed in claim 1, characterized in that the outer wall of the positioning column (7-13) is provided with two positioning grooves (7-132), and both ends of the resetting spring (7-14) are respectively arranged in the positioning grooves (7-132).
4. A self-resetting clutch positioning device as claimed in claim 1, characterized in that the outer wall of the positioning column (7-13) is provided with transmission positioning convex columns (7-131), at least two transmission positioning convex columns (7-131) are arranged, the bottom of each transmission positioning convex column (7-131) protrudes downwards and penetrates through the corresponding positioning elastic sheet (7-15), so that the corresponding positioning elastic sheet (7-15) rotates along with the corresponding positioning column (7-13).
5. The self-resetting clutch positioning device as claimed in claim 4, wherein the positioning spring plate (7-15) comprises a plugging part (7-151) and an abutting part (7-152), at least two plugging parts (7-151) and abutting parts (7-152) are respectively arranged, the plugging parts (7-151) are sequentially connected in a staggered mode to form a three-dimensional circular ring higher than the abutting parts (7-152), a transmission positioning hole (7-1511) is formed in the plugging part (7-151), the transmission positioning protruding column (7-131) penetrates through the transmission positioning hole (7-1511), the abutting parts (7-152) are provided with sunken positioning bosses (7-1521), the abutting parts (7-152) abut against a mounting substrate of the electric operating mechanism, and the positioning bosses (7-1521) are positioned on the mounting substrate.
6. A self-resetting clutch positioning device as claimed in claim 1, characterized in that the clutch positioning device (7-1) further comprises a knob (7-12), wherein the bottom of the knob (7-12) is provided with a convex column, the top of the positioning column (7-13) is provided with a clamping groove, the convex column is clamped in the clamping groove, and the positioning column (7-13) rotates along with the knob (7-12).
7. A self-resetting clutch positioning device as claimed in claim 1, characterized in that the upper part of the positioning column (7-13) is provided with a pressing plate (7-16), the pressing plate is sleeved on the upper part of the positioning column (7-13), and the pressing plate (7-16) is connected with the mounting substrate (2) by a fastener.
8. A self-resetting clutch positioning device as claimed in claim 1, characterized in that the eccentric wheel (7-2) comprises an upper eccentric wheel (7-21) and a lower eccentric wheel (7-22) which are fixedly connected, the diameter of the upper eccentric wheel (7-21) is smaller than that of the lower eccentric wheel (7-22), the eccentric wheel (7-2) is provided with an elongated through groove (7-23), a rectangular cylinder is arranged at the lower part of the transmission shaft (7-11), and the rectangular cylinder of the transmission shaft (7-11) is clamped in the elongated through groove (7-23).
9. An electric operating mechanism is characterized by comprising a mounting base plate (2), a sliding toothed plate (3), a gear motor fixing plate (5) and a gear reduction box (6); the self-resetting clutch positioning device of any one of the above claims 8 is arranged on the mounting substrate (2), the sliding toothed plate (3) can be meshed with a gear of the gear reduction box (6) so as to push a handle (10) of the control circuit breaker to move, the gear reduction box (6) is fixedly connected with the gear reduction motor fixing plate (5), the gear reduction motor fixing plate (5) is rotationally connected with the mounting substrate (2), the gear reduction motor fixing plate (5) is provided with a U-shaped groove (5-11), the upper eccentric wheel (7-21) is clamped in the U-shaped groove (5-11), the lower eccentric wheel (7-22) is abutted to the bottom surface of the U-shaped groove (5-11), and the positioning elastic piece (7-15) of the electric operating mechanism is abutted to the mounting substrate (2), so that the gear reduction motor fixing plate (5) and the gear reduction box (6) can be driven to rotate, and the gear reduction plate (6) can be separated from the gear reduction box (6) or the gear reduction box (3) to be meshed with the gear.
10. The utility model provides a circuit breaker, its characterized in that includes end box (1-1), well lid (1-2), upper cover (1-3) and handle (10), well lid (1-2) lid closes the upper portion of end box (1-1), upper cover (1-3) lid closes well lid (1-2) upper portion, install an electric operating mechanism of above-mentioned claim 9 on well lid (1-2), install base plate (2) fastening in well lid (1-2), electric operating mechanism upper portion is connected with circuit board (1-4), circuit board (1-4) set up the bottom of upper cover (1-3), the upper portion of handle (10) wears to locate well lid (1-2), electric operating mechanism, circuit board and upper cover (1-3) in proper order, and the circuit breaker realizes the operation of breaking and shutting along with the back and forth movement of handle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910684873.1A CN110299256B (en) | 2019-07-26 | 2019-07-26 | Self-resetting clutch positioning device, electric operating mechanism and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910684873.1A CN110299256B (en) | 2019-07-26 | 2019-07-26 | Self-resetting clutch positioning device, electric operating mechanism and circuit breaker |
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| CN110299256A CN110299256A (en) | 2019-10-01 |
| CN110299256B true CN110299256B (en) | 2024-05-31 |
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