CN210110682U - Clutch type electric operating mechanism and circuit breaker - Google Patents

Abstract

The utility model relates to an electric operating mechanism and circuit breaker of separation and reunion formula, including mounting substrate, sliding tooth plate, gear motor fixed plate, gear reduction box, shifter and motor, sliding tooth plate sets up on mounting substrate, sliding tooth plate can with gear reduction box's gear engagement, the motor provides power for gear reduction box, the gear motor fixed plate with mounting substrate swing joint, gear reduction box fixed connection is in the gear motor fixed plate, sliding tooth plate sets up gear reduction box's left side, the shifter with the gear motor fixed plate is connected, the shifter can drive the gear motor fixed plate with gear reduction box removes, realizes the meshing state or the separation state of sliding tooth plate and gear reduction box. The utility model discloses electric operating mechanism changes gear reduction box and sliding tooth plate's distance through the rotation of gear motor fixed plate, realizes the switching of handle user state.

Description

Clutch type electric operating mechanism and circuit breaker

Technical Field

The utility model relates to an electric operating mechanism and circuit breaker of separation and reunion formula.

Background

The electric operating mechanism of the existing circuit breaker generally adopts a combined structure, namely, the electric operating mechanism is sleeved on the common circuit breaker so as to realize the electric operation of the circuit breaker. At present, the electric operating mechanisms are various, but most of the electric operating mechanisms drive an eccentric wheel through a reduction gearbox, and then push a handle to perform on-off operation through a transmission rod, or the electric operating mechanisms push and pull the handle of the circuit breaker to realize the electric operation of the circuit breaker through a gear-rack transmission mode.

The combined operating mechanism can realize the back-and-forth switching of the handle between an automatic state and a manual state, and the switching of the use state of the handle is generally realized by the extension and retraction of a motor output shaft of the motor, namely when the motor output shaft moves downwards, the motor is separated from an eccentric wheel or a gear, so that the purpose of engaging and disengaging the motor and a reduction gearbox is achieved, and the manual state of the handle is realized; on the contrary, the motor drives the reduction gearbox to realize the automatic state of the handle, but the main defect is that the transmission gear of the output shaft of the motor is difficult to mesh with the gear in the reduction gearbox; secondly, troubleshooting is difficult, and the motor is generally installed in the inside of circuit breaker, so the motor output shaft also is located the inside of circuit breaker, in case the trouble is difficult to find, and spare part changes also more complexly.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a gear between reducing gear box and the motor output shaft remains the engaged state throughout, realizes the electronic deciliter mechanism of circuit breaker through removing the gear reducing gear box, and can the quick troubleshooting.

In order to solve the technical problem, the utility model relates to a separation and reunion formula electric operating mechanism is realized through following technical scheme:

the utility model provides an electric operating mechanism with separation and reunion formula, including mounting substrate, sliding tooth plate, gear motor fixed plate, gear reduction box, shifter and motor, sliding tooth plate sets up on mounting substrate, thereby sliding tooth plate can with gear reduction box's gear engagement push control circuit breaker's handle motion, the motor provides power for the gear in the gear reduction box, the gear motor fixed plate with mounting substrate rotates and connects, gear reduction box fixed connection is in the gear reduction motor fixed plate, the shifter with the gear motor fixed plate is connected, the shifter can drive the gear motor fixed plate with thereby gear reduction box rotates and makes the gear of sliding tooth plate and gear reduction box meshes or separates mutually. Through the technical scheme, the reduction gearbox fixing plate directly drives the gear reduction gearbox to move, so that the gear reduction gearbox is separated from and connected with the sliding toothed plate, and the service state of the breaker handle is switched; the motor is arranged in the gear reduction box, and a gear on an output shaft of the motor is always connected with a gear in the gear reduction box, so that the smooth use of the electric operating mechanism is ensured.

As a further improvement of the utility model, mounting substrate includes looks fixed connection's first installation department and second installation department, first installation department has the first logical groove that is used for wearing to establish the handle, first logical groove left side is equipped with first locating part, the second installation department has the second that is used for setting up the gear reduction box and leads to the groove, first lead to the groove with be equipped with the hollow projection of arranging along the Y axle more than 2 between the second logical groove, the cover has drive pulley on the hollow projection, drive pulley is used for supporting the motion of sliding tooth plate. Through the technical scheme, all the components of the electric operating mechanism are arranged on the mounting substrate, so that the integration of the electric operating mechanism is convenient to realize, and the electric operating mechanism is convenient to mount and dismount.

As a further improvement of the utility model, the gear motor fixed plate includes that connecting portion and lid close the portion, connecting portion connect respectively in the lid closes the front and back side of portion, connecting portion are L shape, connecting portion are located the rear side including the vertical board and the horizontal board that are connected the horizontal board of connecting portion with mounting substrate rotates to be connected, is located the front side the horizontal board of connecting portion is equipped with the U-shaped groove, the lid closes the portion gear reduction box fixed connection. Through above-mentioned technical scheme, the gear motor fixed plate rotates in a flexible way, and also has the effect of installation location to the gear reduction box, prevents that gear reduction box from crossing low or too high on the mounting substrate, influence and sliding teeth plate's meshing.

As a further improvement, the shifter includes clutch positioner and eccentric wheel, mounting substrate fastening is run through in the eccentric wheel in clutch positioner's bottom, the eccentric wheel with gear motor fixed plate swing joint, can promote when the eccentric wheel rotates the gear motor fixed plate rotates. Through above-mentioned technical scheme, the shifter drives the eccentric wheel and rotates, and the gear motor fixed plate deflects around the rotation center of eccentric wheel, and the shifter provides pivoted power for the gear motor fixed plate, has also confirmed the route that the gear motor fixed plate rotated along the X axle direction.

As a further improvement of the present 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 upper eccentric wheel is clamped in the U-shaped groove, and the lower eccentric wheel abuts against the bottom surface of the U-shaped groove; the bottom of the clutch positioning device is provided with a transmission shaft, the lower part of the transmission shaft is provided with a rectangular cylinder with two symmetrical curved surfaces, the eccentric wheel is provided with a strip-shaped through groove, and the rectangular cylinder of the transmission shaft is clamped in the strip-shaped through groove. Through the technical scheme, the transmission shaft and the eccentric wheel cannot rotate relatively, and the transmission shaft transmits power and the rotation direction to the eccentric wheel; the eccentric wheel is divided into an upper part and a lower part, so that the speed reducing motor fixing plate can rotate, and the speed reducing motor fixing plate can be limited in the Y-axis direction.

As a further improvement of the present invention, a third through groove for passing a handle and a base are provided on the left side of the sliding toothed plate, the base is disposed around the third through groove, the handle passes through the base and moves with the base, so as to realize the separation and combination of the circuit breaker, a sliding groove is provided on the right side of the sliding toothed plate, and the outer edge of the transmission pulley is attached to the inner wall of the sliding groove; the sliding toothed plate is located on the left side of the gear reduction box, and the right side of the sliding toothed plate is arranged into a rack. Through the technical scheme, the rack of the sliding toothed plate is meshed with the gear of the gear reduction box, so that the sliding toothed plate can move back and forth along the Y-axis direction, the handle penetrating through the base of the sliding toothed plate is driven to move back and forth, and the opening and closing of the circuit breaker are realized; when the motion of sliding tooth plate along the Y axle reached the limit, the semi-circular inner wall of spout supported at the transmission pulley, so the cooperation of spout and transmission pulley plays the limiting displacement along Y axle direction to sliding tooth plate.

As a further improvement, the gear reduction box includes box and upper cover, the upper cover lid closes the upper portion of box, be provided with drive gear on the transmission shaft of motor, the gear train has in the box, the gear train is including intermeshing's first gear train, second gear train, third gear train and fourth gear train in proper order, first gear train with the drive gear of transmission shaft meshes mutually, the fourth gear train with the rack toothing of sliding tooth board. Through above-mentioned technical scheme, adopt the meshing of multiunit gear, improve electric operating mechanism's stability, with gear and motor setting in same box, the aggregate erection of being convenient for, and the engaged state between the gear is difficult for being destroyed.

As a further improvement, the sliding tooth plate is covered with a rack pressing plate, a boss arranged along the Y axis is arranged between the hollow convex columns of the mounting base plate more than 2, the boss is provided with a through hole, the rack pressing plate is provided with a sunken groove, the groove is supported on the upper part of the boss of the mounting base plate and is connected through a fastener, and the middle of the rack pressing plate is provided with a round hole for penetrating through the hollow convex column of the mounting base plate. Through above-mentioned technical scheme, the rack clamp plate plays the limiting displacement of Z axle direction to the sliding tooth board, can protect the transmission pulley simultaneously, improves the roughness and the wholeness on electric operating mechanism surface.

In order to solve the technical problem, the utility model also provides a circuit breaker, including end box, well lid, top cap and handle, end box, well lid, top cap form a complete box, well lid closes the upper portion of end box, the top cap lid closes the upper portion of well lid, in cover and install foretell electric operating mechanism, the mounting substrate fastening is in cover, electric operating mechanism upper portion is connected with the circuit board, the circuit board sets up the bottom of top cap, lid, electric operating mechanism, circuit board and top cap in locating are worn in proper order to the upper portion of handle, and the circuit breaker realizes deciliter along with the back and forth motion of handle. Through above-mentioned technical scheme, the installation of circuit breaker electric operating mechanism is simple, and circuit breaker performance is stable, can switch the user state of handle at will, and whole volume is less than traditional circuit breaker.

As a further improvement, the bottom box is provided with a static contact and a moving contact, the moving contact is connected to the bottom of the handle, the handle enables the moving contact to contact or separate from the static contact, so as to realize the closing or opening of the circuit breaker. Through the technical scheme, the handle controls the opening and closing of the circuit breaker, and the opening and closing of the circuit breaker are realized through the separation of the contact of the moving contact and the static contact.

According to the utility model, the gear reduction box is directly driven to move by the reduction box fixing plate, so that the gear reduction box is separated from and connected with the sliding toothed plate, and the service state of the breaker handle is switched; the motor is arranged in the gear reduction box, and a gear on an output shaft of the motor is always connected with a gear in the gear reduction box, so that the smooth use of the electric operating mechanism is ensured; the switching mechanism can manually or automatically drive the reduction gearbox fixing plate to rotate, so that the switching of the use state of the handle is realized, and the use is more convenient; the rack pressing plate has a Z-axis direction limiting effect on the sliding toothed plate, and meanwhile, the transmission pulley can be protected, and the flatness and the integrity of the surface of the electric operating mechanism are improved; the whole electric operating mechanism is convenient to install.

Drawings

Fig. 1 is a schematic structural view of a clutch type electric operating mechanism provided in embodiment 1 of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic structural view of the mounting substrate of fig. 1.

Fig. 4 is a structural schematic view of the sliding tooth plate of fig. 1.

Fig. 5 is a schematic diagram of a structure of the speed reduction motor fixing plate in 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 an installation structure of the transmission shaft and the return spring of fig. 7.

Fig. 9 is a schematic view of the positioning post of fig. 7.

Fig. 10 is a schematic view of the positioning spring of fig. 7.

Fig. 11 is a schematic structural view of an electric clutch operating mechanism according to embodiment 2 of the present invention.

Fig. 12 is an exploded schematic view of a circuit breaker according to embodiment 3 of the present invention.

Fig. 13 is a schematic view of a partially exploded structure provided in embodiment 3 of the present invention.

Fig. 14 is a full sectional view of a 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, a top cover; 1-4, a circuit board; 1-11, static contact; 1-12, moving contact; 1-21, through grooves; 2. a mounting substrate; 2-1, a first mounting portion; 2-2, a second mounting portion; 2-11, a first through groove; 2-13, a first limit piece; 2-14, hollow convex column; 2-15, boss; 2-21, a second through groove; 2-22, fixing cover mounting holes; 2-23, positioning holes; 3. a sliding toothed plate; 3-1, a handle pushing part; 3-2, a transmission part; 3-11, a third through groove; 3-13, a support 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, a groove; 5. a speed reducing motor fixing plate; 5-1, a connecting part; 5-2, a covering part; 5-11, U-shaped groove; 5-22, a first through hole; 6. a gear reduction box; 6-1, a box body; 6-2, an upper cover; 6-3, a first gear set; 6-4, a second gear set; 6-5, third gear set; 6-6, fourth gear set; 6-11, lugs; 6-111 and a second through hole; 7. A switching mechanism; 7-1, a clutch positioning device; 7-2, an eccentric wheel; 7-11, a transmission shaft; 7-12, a knob; 7-13, positioning columns; 7-14, a return spring; 7-15, positioning the elastic sheet; 7-16, pressing plates; 7-21, an upper eccentric wheel; 7-22, a lower eccentric wheel; 7-23, long strip-shaped through grooves; 7-111, a groove; 7-131, a transmission positioning convex column; 7-132 and a positioning groove; 7-151 and a plug part; 7-152, an abutment; 7-1511, drive the locating hole; 7-1521 and a positioning boss; 8-1, an output shaft of the motor; 9. a transmission pulley; 10. a handle; 10-1, an extension; 10-2, an arc part; 10-3 and a rocker arm.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following embodiments of the present invention will be described in detail with reference to the accompanying drawings and the preferred embodiments, in order to further explain 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 sliding tooth plate 3 is the left side, and the direction formed by the left side and the right side in the description is the X-axis direction shown in fig. 1; the side where the switching mechanism 7 is located is the front side, and the side away from the switching mechanism 7 is the rear side, and the direction formed by the front side and the rear side in the description is the Y-axis direction shown in fig. 1; 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, the electric operating mechanism of separation and reunion formula of this embodiment 1, including mounting substrate 2, sliding tooth plate 3, rack clamp plate 4, gear motor fixed plate 5, gear reduction box 6, switching mechanism 7 and motor, sliding tooth plate 3 sets up the left side at mounting substrate 2, sliding tooth plate 3 can push the motion of handle 10 that the circuit breaker divides and shuts, rack clamp plate 4 sets up on sliding tooth plate 3, gear motor fixed plate 5 sets up the right side upper portion at mounting substrate 2, gear reduction box 6 sets up the right side at mounting substrate 2 and connects in the lower part of gear motor fixed plate 5, the motor sets up in gear reduction box 6, switching mechanism 7 sets up the junction at mounting substrate 2 and gear motor fixed 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 at the left side and a second mounting portion 2-2 at the right side, and the mounting substrate 2 is recessed at both the front side and the rear side of the first mounting portion 2-1.

The handle comprises a first mounting portion 2-1, a first through groove 2-11 is formed in the middle of the first mounting portion, 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 a toothed plate to slide the sliding 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.

Further, the transmission pulley 9 is preferably a rolling bearing, and may also be an oil bearing or a bushing.

The middle of the second mounting part 2-2 is provided with a second through groove 2-21, the second through groove 2-21 is a special-shaped through groove which can be divided into a front part, a middle part and a rear part along the Y-axis direction, and the special-shaped through groove is as follows: the arc-shaped side wall of the circular groove of the middle part is respectively connected with the side wall of the trapezoidal groove and the side wall of the rectangular groove; the outer parts of the front side wall and the rear side wall of the second through groove 2-21 are respectively provided with a fixing cover mounting hole 2-22, wherein two sides of the fixing cover mounting hole 2-22 positioned on 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 fixing 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 lug protruding downwards, so that the limiting effect is achieved.

As shown in fig. 2 and 4, the sliding toothed plate 3 is an irregular thin plate and includes 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 along the Y-axis direction is smaller than the length of the transmission portion 3-2.

The handle pushing part 3-1 is inwards concave at the left front end, a third through groove 3-11 and a base are arranged in the middle of the handle pushing part 3-1, the third through groove 3-11 and the handle pushing part 3-1 are inwards concave together, the base comprises a supporting arm 3-13 arranged in parallel to the Y-axis direction and a push rod 3-14 arranged in parallel to the X-axis direction, the supporting arm 3-13 comprises a left supporting arm and a right supporting arm, the left supporting arm is positioned at the left side of the third through groove 3-11, the right supporting arm 3-132 is positioned at the right side of the third through groove 3-11, the length of the left supporting arm is smaller than that of the right supporting arm, the supporting arm 3-13 and the handle pushing part 3-1 are of an integrated structure, the push rod 3-14 is of a long cylindrical shape and comprises a front push rod and a rear push rod, the two ends of the front, thereby forming a rectangular 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 part 2-13 of the first mounting portion 2-1, so that limiting in the X and Z axis directions is achieved.

The transmission part 3-2 is rectangular, a long strip-shaped and closed sliding groove 3-21 is formed in the middle of the transmission part, the hollow convex column 2-14 and the boss 2-15 of the first installation part 2-1 penetrate through the sliding groove 3-21, and the outer edge of the transmission pulley 9 is attached to the inner wall of the sliding groove 3-21 to play a role in limiting the sliding toothed plate 3 in the X-axis direction; 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; a round hole for penetrating through the hollow convex column 2-15 of the mounting substrate 2 is formed in the middle of the rack pressing plate 4 and 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 sunken groove 4-1, the groove 4-1 abuts against the upper part of a boss 2-15 of the mounting base plate 2, a through hole is formed 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 base plate 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 speed reduction 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, an upper surface of the covering portion 5-2 protrudes to the left side, a circular through groove is formed at the protruding position of the upper surface, and through holes 5-22 for mounting fasteners (such as bolts) are formed in the front and rear sides of the upper surface of the covering portion 5-2 in a pairwise manner. The number of the first through holes 5-22 is four, and the fastening piece is used for connecting the gear reduction box 6; the connecting part 5-1 is respectively connected with 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 walls of the front side and the rear side of the second through groove 2-21 of the mounting base plate 2, the transverse plate of the connecting part 5-1 is positioned at the lower part of the mounting base plate 2, the transverse plate of the connecting part 5-2 connected with 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 just opposite to a positioning hole 2-23 and a fixing cover mounting hole 2-22 at the front side of the mounting base plate 2, the transverse plate of the connecting part 5-2 connected with the rear side of the covering part 5-2 is provided with a through, the front side of the reduction motor fixing plate 5 and the mounting substrate 2 are movable relative to each other.

As shown in fig. 2 and 6, the gear reduction box 6 is arranged in the second through groove 2-21 of the mounting substrate 2, can move in the second through groove 2-21 along the X-axis direction, and comprises a box body 6-1 and an upper cover 6-2, wherein the box body 6-1 is cylindrical 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 opening at the top of the box body 6-1 is provided with two lugs 6-11, the lugs 6-11 are provided with four through holes 6-111 opposite to the through holes 5-22 of the speed reducing motor fixing plate 5, the through holes 6-111 are connected by fasteners so as to connect the gear reduction box 6 to the speed reducing 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 to provide 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 are arranged in the box body 6-1, each gear set comprises an upper coaxial gear and a lower coaxial gear, and specifically comprises 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-; when the racks 3-22 of the sliding toothed plate 3 enter the notches at the left side of the box body 6-1, the lower gears 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 are called as a speed reducing motor for short.

As shown in figures 2 and 7, the switching 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 is sequentially arranged in a fixed cover mounting hole 2-22 and the eccentric wheel 7-2 on the front side of the mounting base plate 2 in a penetrating manner from top to bottom, and the eccentric wheel 7-2 is clamped in a U-shaped groove 5-11 of a speed reducing motor fixing plate 5. The switching mechanism 7 is used for switching between a manual state and an 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 coaxially arranged flat cylinders, 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 deviating from the center of the circle are provided with elongated through grooves 7-23, the two opposite side walls of the elongated through grooves 7-23 are arc-shaped, the upper eccentric wheel 7-21 is clamped in the U-shaped groove 5-11, the lower eccentric wheel 7-22 is abutted against the bottom surface of the U-shaped groove 5-11 to play a role of limiting in the Z-axis direction of the speed reducing motor fixing plate 5, so that the gear motor fixing plate 5 can rotate by taking the long strip-shaped through groove of the eccentric wheel 7-2 as a rotation center.

As shown in fig. 7 and 8, the clutch positioning device 7-1 comprises a transmission shaft 7-11, the transmission shaft 7-11 is arranged at the bottom of the clutch positioning device 7-1, the transmission shaft 7-11 sequentially penetrates through a fixing cover mounting hole 2-22 at the front side of the mounting substrate 2 and a strip-shaped through groove 7-23 of the eccentric wheel 7-2 from top to bottom, and the eccentric wheel 7-2 and the transmission shaft 7-11 are fixed through screws; the upper part of the transmission shaft 7-11 is provided with two semicircular cylinders with gaps, the circle centers of the semicircular cylinders are provided with semicircular longitudinal through grooves which are arranged concentrically, and the two longitudinal through grooves form a groove 7-111; the middle cylinder comprises two cylinders, one cylinder is larger than the diameter of the fixing cover mounting hole 2-22 of the mounting substrate 2 and is arranged at the upper part of the mounting substrate 2, the other cylinder is slightly smaller than the diameter of the fixing cover mounting hole 2-22 of the mounting substrate 2 and is in clearance fit in the fixing cover mounting hole 2-22, the positioning effect in the Z-axis direction is achieved on the eccentric wheel 7-2, the lower part of the transmission shaft 7-11 is a rectangular cylinder with a front curved outer wall and a rear curved outer wall and mounting holes at the bottom, and the shape and the size of the long-strip-shaped through groove 7-23 are matched with the lower part of the transmission shaft 7-11, so that the eccentric wheel 7-2 and the transmission shaft 7.

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 elastic sheet 7-15; the positioning column 7-13 is arranged at the bottom of the knob 7-12, the return spring 7-14 is positioned in the positioning column 7-13, two ends of the return spring 7-14 penetrate through the outer wall of the positioning column 7-13, the upper part of the transmission shaft 7-11 penetrates through the return spring 7-14, one end of the return spring 7-14 penetrates between two semi-cylinders at the upper part of the transmission shaft 7-11 and is connected with the positioning column 7-13, as shown in figure 8, the bottom end of the return spring 7-14 penetrates through the groove 7-111, the bottom of the positioning column 7-13 is provided with a positioning elastic sheet 7-15, the positioning elastic sheet 7-15 abuts against the mounting substrate 2, and the knob 7-12 can be used for manually rotating the clutch positioning device.

As shown in fig. 7 and 9, the positioning column 7-13 is a hollow cylinder, the bottom of the positioning column 7-13 is open, 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; a clamping column inserted into the groove 7-111 of the transmission shaft 7-11 is arranged inside the positioning column 7-13, the clamping column is a cylinder and is in clearance fit with the groove 7-111, and the clamping column can prevent the return 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 integrated with the positioning columns 7-13, and the bottoms of the transmission positioning convex columns 7-131 downwards protrude out of the bottoms of the positioning columns 7-13; the positioning grooves 7-132 are arranged in an L shape, so that the return springs 7-14 can be conveniently installed in the positioning columns 7-13, the 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 return spring 7-14 penetrate through the two positioning grooves 7-132 respectively, and the return springs 7-14 and the positioning columns 7-13 have mutual acting force.

As shown in fig. 7 and 10, the positioning elastic sheet 7-15 includes at least two insertion parts 7-151 and at least two abutting parts 7-152, the insertion parts 7-151 and the abutting parts 7-152 are sequentially connected in a staggered manner to form a three-dimensional ring with the insertion parts 7-151 higher than the abutting parts 7-152, each insertion part 7-151 is provided with a transmission positioning hole 7-1511, and the transmission positioning convex column 7-131 penetrates through the transmission positioning hole 7-1511, so that the positioning elastic sheet 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.

Furthermore, a pressing plate 7-16 is sleeved on the upper portion of the positioning column 7-13, as shown in fig. 7 and 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 through a fastening piece to limit the positioning column 7-13 and an internal spring 7-14 thereof in the Z-axis direction.

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 speed reduction motor fixing plate 5 to rotate, the speed reduction motor fixing plate 5 enables the gear reduction box 6 fastened with the speed reduction motor fixing plate to rotate towards the left, meshing of the gear reduction box 6 and the racks 3-22 of the sliding toothed plate 3 is achieved, and the handle 10 is switched into an automatic state. In the process, the tooth tops of the fourth gear sets 6-6 of the gear reduction box 6 are opposite to the tooth grooves of the racks 3-22 of the sliding tooth plates 3, and meshing is successful. However, in the process of meshing the fourth gear set 6-6 of the gear reduction box 6 with the racks 3-22 of the sliding tooth plate 3, because of the uncertainty of the positions of the two, there will be a case that the meshing is unsuccessful, that is, the reduction motor fixing plate 5 is not rotated to the left to the position where the meshing can be successfully performed, the eccentric wheel 7-2 controlling the rotation of the reduction motor fixing plate 5 is not rotated to the position where the meshing can be successfully performed, and the positioning post 7-13 is in the position where the meshing can be successfully performed, at this time, the rotation angle of the transmission shaft 7-11 connected with the eccentric wheel 7-2 is not consistent with the rotation angle of the positioning post 7-13, so the return spring 7-14 connected with the transmission shaft 7-11 and the positioning post 7-13 will have the storage of the torsion force due to the above-mentioned angle difference, after the motor rotates, under the action of the torsional restoring force of the return spring 7-14, the eccentric wheel 7-2 and the transmission shaft 7-11 enable the speed reduction motor fixing plate 5 to continuously drive the gear reduction box 6 to rotate leftwards, meshing of the fourth gear set 6-6 and the sliding rack 3-22 is completed, and at the moment, the positioning boss 7-1521 of the positioning elastic sheet is matched with the positioning hole 2-23 of the mounting substrate 2. The above process is the self-reset function of the switching 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 racks 3-22 of the sliding tooth plate 3, generally, the reduction motor fixing plate 5 is not turned leftwards to a position where the reduction motor fixing plate can be successfully engaged, and only the motor rotates to drive the fourth gear set 6-6 to rotate, so that the successful engagement can be realized.

In the process of separating the clutch type electric operating mechanism, the knob 7-12 rotates anticlockwise, the positioning column 7-13 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 speed reduction motor fixing plate 5 to rotate rightwards, the speed reduction motor fixing plate 5 enables the gear reduction box 6 fastened with the speed reduction motor fixing plate to rotate rightwards, separation of the gear reduction box 6 and the racks 3-22 of the sliding toothed plate 3 is achieved, 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 switching mechanism 7, so that the gear reduction motor fixing plate 5 is driven to deflect through the rotation of the switching mechanism 7, the whole gear reduction box 6 is driven to move along the X-axis direction, 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 manual state and the automatic state of the electric operating mechanism can be converted; the switching mechanism 7 is internally provided with return springs 7-14, when the electric operating mechanism is not successfully switched from a manual state to an automatic state, the return springs 7-14 store torsion depending on the rotation angle difference between the transmission shafts 7-11 and the positioning columns 7-13, and after the motor drives the fourth gear set 6-6 to rotate, the restoring force of the return springs 7-14 enables the reduction motor fixing plate 5 and the gear reduction box 6 to move leftwards, so that the gear reduction box 6 is successfully engaged with the racks 3-22 of the sliding toothed plate 3, and the use state of the handle 10 is successfully switched; the sliding toothed plate 3 and the gear reduction box 6 are adopted, so that 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 the present embodiment 2 is substantially the same as that of embodiment 1, except that: the handle pushing portion 3-1 of the sliding toothed plate 3 is not provided with the handle pushing portion 3-1 and a base on the handle pushing portion 3-1, the right side wall of the sliding toothed plate 3 is provided with a 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, a transverse shaft of the handle transmission shaft 3-16 penetrates through the through hole of the handle 10, the handle transmission shaft 3-16 penetrates through the handle 10 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 circuit breaker is controlled to be.

Example 3

As shown in fig. 12, a circuit breaker, the circuit breaker 1 includes a clutch type electric operating mechanism described in embodiment 1 or embodiment 2, and further includes a bottom case 1-1, a middle cover 1-2, a top cover 1-3 and a handle 10, wherein the middle cover 1-2 covers the upper portion of the bottom case 1-1, the top cover 1-3 covers 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 top cover 1-3 and penetrates through a mounting substrate 2, the mounting substrate 2 is arranged on the middle cover 1-2, the upper portion of the electric operating mechanism is connected with a circuit board 1-4 for controlling the circuit breaker 1, the circuit board 1-4 is arranged at the bottom of the top cover 1-3, the bottom case 1-1, the middle cover 1-2 and the top cover 1-3 form a complete rectangular box body, has the protection function.

As shown in fig. 13, the handle 10 includes a protruding portion 10-1 and an arc portion 10-2, wherein the protruding portion 10-1 and the arc portion 10-2 are of an integrated structure; the extension part 10-1 is in a strip shape, sequentially penetrates through the middle cover 1-2, the electric operating mechanism, the circuit board 1-4 and the top 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 bulging 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 rocker arm 10-3 with columnar positioning, the rocker arm 10-3 is connected with two spring sets which 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 portion 10-2 is arranged in the middle of the middle cover 1-2, and a through groove is formed in the mounting seat and used for penetrating through the handle 10.

The bottom case 1-1 is internally provided with a static contact 1-11, an arc extinguishing device and a movable contact 1-12, as shown in fig. 14, the movable contact 1-12 is connected with a spring set in order to quickly extinguish arc sparks generated when the contact is disconnected.

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 1-12 is contacted with or separated from the static contact 1-11, and the switching-on or switching-off of the circuit breaker 1 is realized.

The upper surface of the top cover 1-3 is provided with a display panel and a control button, and wires for connecting the switching mechanism 7, the motor, the button and the like are all connected with the circuit board 1-4, so that the full-automatic state of switching on or switching off of the circuit breaker 1 can be realized; 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 switching mechanism 7, thereby facilitating manual operation.

According to the circuit breaker, the handle for controlling the circuit breaker to be opened and closed can be switched between a manual state and an automatic state at will, and the circuit breaker is convenient to use; in an automatic state, the circuit breaker is provided with a switching mechanism 7 capable of automatically resetting, and the use stability of the circuit breaker is guaranteed.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, changes and modifications of the above embodiments that do not depart from the technical scope of the present invention are within the scope of the present invention.

Claims (10)

1. The utility model provides an electric operating mechanism of separation and reunion formula, its characterized in that, including mounting substrate (2), sliding tooth plate (3), gear motor fixed plate (5), gear reduction box (6), shifter (7) and motor, sliding tooth plate (3) set up on mounting substrate (2), thereby sliding tooth plate (3) can with gear engagement push control circuit breaker's handle (10) motion of gear reduction box (6), the motor provides power for the gear in the gear reduction box, gear motor fixed plate (5) with mounting substrate (2) rotate the connection, gear reduction box (6) fixed connection in gear motor fixed plate (5), shifter (7) with gear motor fixed plate (5) are connected, shifter (7) can drive gear motor fixed plate (5) with gear reduction box (6) rotate thereby make sliding tooth plate (3) and gear reduction box (6) The gears are meshed or separated.

2. The clutch type electric operating mechanism according to claim 1, wherein the mounting base plate (2) comprises a first mounting part (2-1) and a second mounting part (2-2) which are fixedly connected, the first mounting part (2-1) is provided with a first through groove (2-11) for penetrating a handle (10), the left side of the first through groove (2-11) is provided with a first limiting part (2-13), the second mounting part (2-2) is provided with a second through groove (2-21) for arranging a gear reduction box (6), more than 2 hollow convex columns (2-14) arranged along the Y axis are arranged between the first through groove (2-11) and the second through groove (2-21), and 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.

3. The clutch type electric operating mechanism as claimed in claim 1, wherein the reduction motor fixing plate (5) comprises a connecting portion (5-1) and a covering portion (5-2), the two connecting portions (5-1) are respectively connected to the front side and the rear side of the covering portion (5-2), the connecting portion (5-1) is L-shaped, the connecting portion (5-1) comprises a vertical plate and a horizontal plate which are connected, the horizontal plate of the connecting portion (5-1) located at the rear side is rotatably connected with the mounting base plate (2), the horizontal plate of the connecting portion (5-1) located at the front side is provided with a U-shaped groove (5-11), and the covering portion (5-2) is fixedly connected with the gear reduction box (6).

4. A clutch type electric operating mechanism according to claim 3, characterized in that the switching mechanism (7) comprises a clutch positioning device (7-1) and an eccentric wheel (7-2), the bottom of the clutch positioning device (7-1) is fastened in the eccentric wheel (7-2) through a mounting base plate (2), the eccentric wheel (7-2) is movably connected with the reduction motor fixing plate (5), and the eccentric wheel (7-2) can push the reduction motor fixing plate (5) to rotate when rotating.

5. A clutch type electric operating mechanism according to claim 4, 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 upper eccentric wheel (7-21) is clamped in the U-shaped groove (5-11), and the lower eccentric wheel (7-22) is abutted against the bottom surface of the U-shaped groove (5-11); the bottom of the clutch positioning device (7-1) is provided with a transmission shaft (7-11), the lower part of the transmission shaft (7-11) is provided with a rectangular cylinder with two symmetrical curved surfaces, the eccentric wheel (7-2) is provided with a strip-shaped through groove (7-23), and the rectangular cylinder of the transmission shaft (7-11) is clamped in the strip-shaped through groove (7-23).

6. The clutch type electric operating mechanism according to claim 2, wherein a third through groove (3-11) for passing a handle (10) and a base are arranged on the left side of the sliding toothed plate (3), the base is arranged around the third through groove (3-11), the handle (10) is passed through the base and moves along with the base to realize the opening and closing of the circuit breaker, a sliding groove (3-21) is arranged on the right side of the sliding toothed plate (3), and the outer edge of the transmission pulley (9) is attached to the inner wall of the sliding groove (3-21); the sliding toothed plate (3) is located on the left side of the gear reduction box (6), and racks (3-22) are arranged on the right side of the sliding toothed plate (3).

7. The clutch type electric operating mechanism according to claim 6, wherein the gear reduction box (6) comprises a box body (6-1) and an upper cover (6-2), the upper cover (6-2) covers the upper part of the box body (6-1), a transmission shaft of the motor is provided with a transmission gear, the box body (6-1) is internally provided with a gear set, the gear set comprises 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) which are sequentially meshed with each other, the first gear set (6-3) is meshed with the transmission gear of the transmission shaft, and the fourth gear set (6-6) is meshed with the racks (3-22) of the sliding toothed plate.

8. The clutch type electric operating mechanism according to claim 2, wherein the sliding toothed plate (3) is covered with a rack pressing plate (4), more than 2 bosses (2-15) arranged along the Y axis are arranged between the hollow bosses (2-14) of the mounting base plate (2), the bosses (2-15) are provided with through holes, the rack pressing plate (4) is provided with a sunken groove (4-1), the groove (4-1) abuts against the upper part of the boss (2-15) of the mounting base plate and is connected through a fastener, and a round hole for penetrating the hollow bosses (2-14) of the mounting base plate is arranged in the middle of the rack pressing plate (4).

9. A circuit breaker is characterized by comprising a bottom box (1-1), a middle cover (1-2), a top cover (1-3) and a handle (10), wherein the bottom box (1-1), the middle cover (1-2) and the top cover (1-3) form a complete box body, the middle cover (1-2) covers the upper part of the bottom box (1-1), the top cover (1-3) covers the upper part of the middle cover (1-2), the middle cover (1-2) is provided with an electric operating mechanism according to any one of the claims 1-8, a mounting substrate (2) is fastened on the middle cover (1-2), the upper part of the electric operating mechanism is connected with a circuit board (1-4), the circuit board (1-4) is arranged at the bottom of the top cover (1-3), the upper portion of the handle (10) penetrates through the middle cover (1-2), the electric operating mechanism, the circuit board (1-4) and the top cover (1-3) in sequence, and the circuit breaker is separated and combined along with the movement of the handle (10).

10. The circuit breaker according to claim 9, wherein the bottom case (1-1) is provided with a fixed contact (1-11) and a movable contact (1-12), the movable contact (1-12) is connected to the bottom of the handle (10), and the handle (10) can make the movable contact (1-12) contact with or separate from the fixed contact (1-11), so as to achieve the switching on or off of the circuit breaker.

Images