CN205282323U - Automatic change over switch's interlock - Google Patents

Abstract

An interlocking device for an automatic transfer switch belongs to the technical field of low-voltage electrical appliances. It includes a driving part, a pair of driven parts and a mounting plate. The driving part and a pair of driven parts are pivotally connected to the mounting plate respectively, and the pair of driven parts are respectively located on the left and right sides of the driving part. The part transmits the action of the driving part to the corresponding switch body, thereby completing the opening and closing movement of the switch body. Features: Among the pair of driven parts, the left driven part and the right driven part correspond to the driving part The ends of one side are respectively provided with circular arc notches, and the driving part has a limited front edge. Rotation of the driven member on the other side is restricted. The structure is compact, the operating stroke is large and the required operating force is small.

Description

An interlocking device for an automatic transfer switch

technical field

The utility model belongs to the technical field of low-voltage electrical appliances, in particular to an interlocking device of an automatic transfer switch.

Background technique

The automatic transfer switch includes a motor, an operating mechanism linked with the output shaft of the motor, a common and standby switch body for controlling the on-off of the common and standby power circuits, and the operating mechanism includes a mounting plate, a motor fixed at the bottom of the mounting plate, a pivot The driving part on the mounting plate, the driven part which is arranged on both sides of the driving part and whose one end cooperates with the driving part, and whose other end cooperates with the handle of the switch body. At present, the operating mechanisms on the market are equipped with mechanical interlocking devices. Through the cooperation of the driven parts and the driving parts, only one switch in the common and standby switch bodies can be in the closed position to ensure the safety of the user's operation. However, the disadvantages of these operating mechanisms are: the structure is more complicated, and when the operating force and/or stroke required by the switch body increase, it must be realized by increasing the overall size of the switch and increasing the driving force requirements for the motor. Therefore, it does not meet the trend of miniaturization of automatic transfer switches.

In view of the above prior art, it is necessary to reasonably improve the structure of the existing interlocking device of the automatic transfer switch. For this reason, the applicant has made a beneficial design, and the technical solution to be introduced below is produced under this background.

Contents of the invention

The purpose of this utility model is to provide an interlocking device for an automatic transfer switch, which has a simple structure, small volume, large operating stroke and small required operating force.

The purpose of this utility model is achieved in this way. An interlocking device for an automatic transfer switch includes a driving part, a pair of driven parts and a mounting plate. The driving part and a pair of driven parts are respectively pivotally connected to the on the board, and a pair of driven parts are respectively located on the left and right sides of the driving part. Among the driven parts, the driven part on the left side and the driven part on the right side are respectively provided with arc notches at the ends corresponding to one side of the driving part. The edge cooperates with the arc notch, and is used to limit the rotation of the driven part on the other side when the switch body on one side is in the closing position.

In a specific embodiment of the present utility model, the front edge is an arc surface centered on the rotation center of the driving component, and the arc gap is an arc surface coupled with the front edge.

In another specific embodiment of the present utility model, the front edge cooperates with the arc notch to limit the opening of the other side when the switch body on one side is in the process of opening or closing. Rotation of the driven part on one side.

In yet another specific embodiment of the present utility model, the pair of driven parts are pivotally connected to the mounting plate through their respective rotary shafts, and each driven part includes push rods, upper levers and upper levers arranged in sequence. and a lower lever, the lower lever is provided with a first push shaft and a second push shaft, the push rod is slipped on the upper lever and is located between the first push shaft and the second push shaft, the The arc notch is arranged on the lower lever; the drive part includes a drive plate and a limit plate arranged at the bottom of the drive plate, a drive head and a drive shaft are arranged on the drive plate, and the front edge is controlled by a limit plate The outer edge is formed directly; the drive head is matched with the first push shaft and the second push shaft respectively, and the drive shaft is matched with the push rod.

In yet another specific embodiment of the present utility model, the outer edge of the limiting disc is further formed with a working gap as the rear edge, and the rear edge is an arc surface with the rotation center of the driving part as the center of the circle. The radius is smaller than the arc radius of the front edge.

In the utility model, circular arc notches are respectively provided on the ends of a pair of driven parts corresponding to one side of the driving part, and at the same time, the driving part is provided with a front edge with a position-limiting effect. It is used to restrict the rotation of the driven part on the other side when the switch body on one side is in the closing position, thus ensuring that only one switch in the common and standby switch bodies is in the closing position to ensure user operation The safety of the interlock device is simple in structure, small in size, large in operating stroke and requires small operating force.

Description of drawings

Fig. 1 is a top view of the automatic transfer switch formed by the cooperation of the switch operating mechanism and the switch body of the utility model.

Fig. 2 is a side view of the automatic transfer switch formed by the cooperation of the switch operating mechanism and the switch body of the utility model.

Fig. 3 is a three-dimensional exploded view of the switch operating mechanism of the present invention.

Fig. 4 is a perspective view of the driven part of the utility model.

Fig. 5 is a three-dimensional exploded view of the driven part of the present invention.

Fig. 6 is a cooperation diagram of the push rod and the upper lever in the driven part of the present invention.

Fig. 7 is a schematic diagram of the push rod in the driven part of the present invention.

Fig. 8 is a plan view of the drive disc in the drive component of the present invention.

Fig. 9 is a three-dimensional structure diagram of the driving disc in the driving part of the present invention.

Fig. 10 is a front view of the limit plate in the driving part of the present invention.

Fig. 11 is a perspective view of the gear in the driving part of the present invention.

Fig. 12a is a front perspective view of the manual operation shaft of the present invention.

Fig. 12b is a bottom perspective view of the manual operation shaft of the present invention.

Fig. 13 is a diagram of the common closing standby opening state when the switch operating mechanism of the utility model cooperates with the switch body to form an automatic transfer switch.

Fig. 14 is a schematic diagram of the first opening movement commonly used when the switch operating mechanism of the utility model cooperates with the switch body to form an automatic transfer switch.

Fig. 15 is a schematic diagram of the second opening movement commonly used when the switch operating mechanism of the present invention cooperates with the switch body to form an automatic transfer switch.

Fig. 16 is a schematic diagram of a push rod for pushing the right driven part by the first drive shaft for the common opening and backup corresponding to the first drive shaft when the switch operating mechanism of the utility model cooperates with the switch body to form an automatic transfer switch.

Fig. 17 is a schematic diagram of the backup first closing movement when the switch operating mechanism of the utility model cooperates with the switch body to form an automatic transfer switch.

Fig. 18 is a schematic diagram of the transition from the standby first closing movement to the standby second closing movement when the switch operating mechanism of the present invention cooperates with the switch body to form an automatic transfer switch.

Fig. 19 is a schematic diagram of the standby second closing movement when the switch operating mechanism of the present invention cooperates with the switch body to form an automatic transfer switch.

Fig. 20 is a schematic diagram of the final closing position of the backup switch when the switch operating mechanism of the present invention cooperates with the switch body to form an automatic transfer switch.

Fig. 21 is a diagram of the common tripping standby opening state when the switch operating mechanism of the utility model cooperates with the switch body to form an automatic transfer switch.

Fig. 22 is a schematic diagram of the commonly used re-buckle process when the switch operating mechanism of the utility model cooperates with the switch body to form an automatic transfer switch.

Fig. 23 is a schematic diagram of the second buckling process commonly used when the switch operating mechanism of the utility model cooperates with the switch body to form an automatic transfer switch.

Fig. 24 is a schematic diagram of the three commonly used re-buckle processes when the switch operating mechanism of the utility model cooperates with the switch body to form an automatic transfer switch.

In the figure: 1. Upper mounting plate, 11. Upper rotary shaft hole 1, 12. Upper rotary shaft hole 2, 13. Upper rotary shaft hole 3, 14. Upper rotary shaft hole 4; 2. Lower mounting plate, 21. Lower Rotary shaft hole one, 22. Lower rotary shaft hole two, 23. Lower rotary shaft hole three, 24. Lower rotary shaft hole four; 3. Motor, 31. Motor output shaft, 32. Through hole; 4. Gear shaft, 41 .limiting shaft end, 42. open shaft end; 5. manual operation shaft, 501. operation hole, 502. groove, 504a. first cavity, 504b. second cavity, 506. screw hole, 507. drive Cam; 20. Driven part, 201a. First handle driving roller, 201b. Second handle driving roller, 202. Rotary shaft, 203. Push rod, 2031. Closing driving surface, 2032. Opening driving surface, 2033. Front sliding surface, 2034. Rear sliding surface, 204a. First push shaft, 204b. Second push shaft, 205. Lower lever, 2051. Arc gap, 206. Upper lever, 2061a. Front long groove, 2061b. Rear long groove, 2062. Middle long groove, 208a. Front shaft pin, 208b. Rear shaft pin, 2081. Middle boss, 2082. Lower boss, 209. Middle shaft pin, 210. Drive slot, 211a. Front return spring , 211b. Rear return spring, 212. Shaft, 213a. Front axle, 213b. Rear axle, 214a. Front hole, 214b. Back hole, 215a. Upper hole, 215b. Lower hole; 40. Driving component, 401. Drive Disk, 402. Gear, 4021. Shaft hole, 4022. Upper shaft head, 4023. Driving boss surface, 4024. Mounting boss surface, 4025. Mounting surface, 4026. Tooth body, 4027. Hole, 403. Limiting plate, 4031 .Front edge, 4032. Waist-shaped limit groove, 4033. Rear edge, 4034. Limit plate hole, 4035. Screw through hole, 405a. First drive shaft, 405b. Second drive shaft, 4061. Waist-shaped groove, 4062. Drive disk hole, 4063. Drive head, 4064. Arc connection surface, 4065a. First transition surface, 4065b. Second transition surface, 4066a. First push surface, 4066b. Second push surface, 4067. Arc 100. Operating device, 101. Second circuit breaker, 1011. Second operating handle, 102. First circuit breaker, 1021. First operating handle.

detailed description

The applicant will describe in detail the specific implementation of the present invention below in conjunction with the accompanying drawings, but the applicant's description of the embodiments is not a restriction on the technical solution, and any changes based on the concept of the present invention in form rather than in substance should be regarded as Protection scope of the present utility model.

Please refer to Figures 1 to 12. The utility model relates to an interlock device for an automatic transfer switch. In this embodiment, a molded case circuit breaker is used as the switch body to form an automatic transfer switch. In this embodiment, the mounting plate includes an upper mounting plate 1. Lower mounting plate 2. Between the upper mounting plate 1 and the lower mounting plate 2, a driving part 40, a pair of driven parts 20 and a gear shaft 4 positioned on the left and right sides of the driving part 40 are installed, and a motor 3 is installed below the lower mounting plate 2. A manual operation shaft 5 is installed above the plate 1 . The upper mounting plate 1 is provided with an upper rotary shaft hole 11, an upper rotary shaft hole 2 12, an upper rotary shaft hole 3 13 and an upper rotary shaft hole 4 14. Correspondingly, the lower mounting plate 2 is provided with There are lower rotary shaft hole 1 21, lower rotary shaft hole 2 22, lower rotary shaft hole 3 23 and lower rotary shaft hole 4 24, wherein the driven part on the left side in a pair of driven parts 20 is installed on the upper side through the rotary shaft 202. Between the rotary shaft hole two 12 and the lower rotary shaft hole two 22, the driven part on the right side is installed between the upper rotary shaft hole one 11 and the lower rotary shaft hole one 21 through the rotary shaft 202 . The motor 3 is fixed below the lower mounting plate 2, and the motor output shaft 31 on the motor 3 passes through the lower rotary shaft hole 3 23 on the lower mounting plate 2 upwards, and the motor output shaft 31 is designed to be flat It is circular and has a through hole 32 in the radial direction. The driving part 40 is fitted on the motor output shaft 31 through the oblate shaft hole 4021 in the middle of the gear 402 axially, and the spring pin traverses the through hole 32 on the motor output shaft 31 and the gear 402 hole 4027, as shown in Figure 11. The upper shaft head 4022 of the gear 402 is installed in the upper rotary shaft hole three 13 . The gear shaft 4 passes through the waist-shaped groove 4061 (as shown in FIG. 9 ) on the driving part 40, and is installed between the upper rotary shaft hole 414 and the lower rotary shaft hole 424. The upper end of the gear shaft 4 is provided with an open shaft end 42, and the lower end of the gear shaft 4 is provided with a limit shaft end 41. The limit shaft end 41 is accommodated in the waist-shaped groove 4061, and the open shaft The end 42 protrudes upwards from the upper mounting plate 1. The manual operation shaft 5 is provided with a first cavity 504a and a second cavity 504b matching the open shaft end 42 of the gear shaft 4. The manual operation shaft 5 passes through The first cavity 504a and the second cavity 504b are sleeved on the open shaft end 42 of the gear shaft 4, and fixed by screws and screw holes 506. The end of the manual operation shaft 5 forms a square operation hole 501 for A manual operating rod (known technology not shown in the figure) is inserted and actuated. A drive cam 507 protrudes from the outer peripheral surface of the manual operation shaft 5, and is used to cooperate with a signal output device (not shown in the figure, known technology) fixed on the upper mounting plate 1, and the drive signal is output through the drive cam 507. The device can judge whether the dual power switch is in the double-off position, or combine the auxiliary signal inside the switch to judge whether the switch is in contact adhesion fault. The shaft body of the manual operation shaft 5 is provided with a groove 502 for cooperating with an isolating locking device (not shown in the figure, known technology) to realize isolating and locking in the double-off position of the dual power switch.

The drive component 40 includes a drive plate 401, the above-mentioned gear 402 and a limit plate 403, as shown in Figure 3, Figure 10, and Figure 11, the gear 402 also has a tooth body 4026, a mounting surface 4025 1. Install the boss surface 4024 and the driving boss surface 4023. The tooth body 4026 is used to mesh with the tooth body on the gear shaft 4 to realize the linkage with the manual operation shaft 5. The installation boss surface 4024 and the limit plate The limit plate hole 4034 on the 403 is compatible, and the mounting surface 4025 is against the limit plate 403 . Set the drive plate 401 on the mounting boss surface 4024 of the gear 402 through the drive plate hole 4062 in the middle, and make the drive boss surface 4023 match the drive plate hole 4062, and at the same time make the waist-shaped groove 4061 on the drive plate 401 and the limit plate The waist-shaped limit groove 4032 on the 403 is aligned, and finally the screw passes through the screw hole on the drive plate 401 and the screw hole 4035 on the limit plate 403 to fix the drive plate 401 and the limit plate 403, and the gear 402 is positioned between the driving disc 401 and the limiting disc 403 . The limiting disk 403 has a front edge 4031 and a rear edge 4033, and the adjacent parts form a step, and the front edge 4031 is a limiting surface, which is used to cooperate with the circular arc notch 2051 on the driven part 20 for when When the switch body on one side is in the closing position, the rotation of the driven part 20 on the other side is restricted. The front edge 4031 is an arc surface with the rotation center of the driving component 40 as the center, and the arc notch 2051 is an arc surface coupled with the front edge 4031 . "Coupling" specifically means: when the front edge 4031 matches the arc notch 2051, both the front edge 4031 and the arc notch 2051 are arc surfaces with the center of rotation of the driving component 40 as the center and the same radius. The rear edge 4033 is a working notch, which is an arc surface centered on the rotation center of the driving part 40 , and its arc radius is smaller than that of the front edge 4031 . It is used to prevent interference between the driving part 40 and the driven part 20 in the positions shown in FIG. 18 and FIG. 20 .

The drive disc 401 is provided with a pair of drive heads 4063, and a certain angle is separated between the pair of drive heads 4063. This angle requires that the drive head 4063 on the left drive the left driven part 20 to close in place, and the drive head 4063 on the right The drive head 4063 should not affect the left driven part 20 trip indication. The driving head 4063 is mainly composed of the second pushing surface 4066b, the first pushing surface 4066a and the arc connecting surface 4064, and the second pushing surface 4066b, the first pushing surface 4066a and the arc connecting surface 4064 are respectively passed through the first The transition surface 4065a and the second transition surface 4065b make a smooth transition. The outermost distance H (shown in FIG. 8 ) of the driving head 4063 must be smaller than the minimum distance L (shown in FIG. 4 ) inside the first push shaft 204a and the second push shaft 204b of the driven part 20, that is, H<L, in a The driving head 4063 is respectively provided with a first driving shaft 405a and a second driving shaft 405b. The first driving shaft 405a and the second driving shaft 405b are designed in the form of rollers, preferably with rolling bearings in this embodiment column, the outer distance between the first drive shaft 405a and the second drive shaft 405b should be smaller than the outermost distance H of the drive head 4063, and the inner distance between the first drive shaft 405a and the second drive shaft 405b should be greater than the push rod 203 outside distance to prevent mechanism interference.

The driven part 20 includes a rotary shaft 202, a push rod 203, an upper lever 206, a lower lever 205, a front axle pin 208a, a rear axle pin 208b, an intermediate axle pin 209, a front axle 213a, a rear axle 213b, a front reset The spring 211a, the rear return spring 211b, the first push shaft 204a, the second push shaft 204b, the first handle driving roller 201a and the second handle driving roller 201b. The driven part 20 is pivotally connected between the upper mounting plate 1 and the lower mounting plate 2 through the rotary shaft 202. The upper lever 206 is provided with a middle long groove 2062, a front long groove 2061a, and a rear long groove 2061b. The rotating shaft 202 is on the same straight line, and the front long groove 2061a and the rear long groove 2061b are symmetrically arranged on both sides of the middle long groove 2062, and the push rod 203 is fixed to the ends of the middle shaft pin 209, the front shaft pin 208a, and the rear shaft pin 208b. The middle bosses 2081 of the three shaft pins are respectively accommodated in the middle long groove 2062, the front long groove 2061a, and the rear long groove 2061b, and can slide freely along the direction of the chute. The boss 2081 constitutes a step, and the lower boss 2082 is located at the bottom of the upper lever 206. The front pivot pin 208a, the rear pivot pin 208b and the intermediate pivot pin 209 are not on the same straight line, and the distance between the three should be as long as possible. The end of a shaft pin is fixed with the push rod 203, the lower boss 2082 of the three shaft pins is matched with the bottom surface of the upper lever 206, and the push rod 203 is in the height direction of the switch operating mechanism (that is, the axial direction of the shaft pin) Carry out limit. Front axle 213a, rear axle 213b are riveted on the upper lever 206, and one end of front return spring 211a, rear return spring 211b is fixed on front axle 213a, rear axle 213b, and the other end of front return spring 211a, rear return spring 211b is fixed On the front pivot pin 208a and the rear pivot pin 208b, the push rod 203 can return to its original position under the elastic force of the front return spring 211a and the rear return spring 211b after being pushed away. The first push shaft 204a and the second push shaft 204b are fixed on one end of the lower lever 205, and the middle of the other end of the lower lever 205 and the upper lever 206 forms a drive slot 210 for matching with the switch body handle. The shaft 204a and the second pushing shaft 204b adopt a roller design, and in this embodiment, a column with a rolling bearing is preferably used. The head of the push rod 203 is located between the first push shaft 204a and the second push shaft 204b. The first handle driving roller 201a and the second handle driving roller 201b are respectively sleeved on the shaft 212. The material of the rollers can be plastic or metal. The upper lever 206 and the lower lever 205 are fixed together by the shaft 212. The rotary shaft 202 is arranged in the middle of the upper lever 206 and the lower lever 205 after passing through the upper hole 215a and the lower hole 215b on the upper lever 206 and the lower lever 205 . The first push shaft 204a, the second push shaft 204b, the first handle driving roller 201a, and the second handle driving roller 201b are located on two sides of the rotary shaft 202, respectively. The lower lever 205 of the driven part 20 is provided with an arc notch 2051 on the end close to the driving part 40 to match the front edge 4031 of the driving part 40 . On the lower lever 205 and corresponding to the front long slot 2061a and the rear long slot 2061b, there are respectively a front hole 214a and a rear hole 214b, and the front hole 214a and the rear hole 214b are respectively used to accommodate the front Return spring 211a, rear return spring 211b.

The distance between the first push shaft 204a and the second push shaft 204b is related to the distance between the two drive heads 4063, as shown in Figure 13, when the common circuit breaker is in the closing state and the backup circuit breaker is in the opening state, If the handle of the common circuit breaker is manually moved to the direction of the opening position, the handle of the common circuit breaker pushes the second handle driving roller 201b, so that the driven part 20 on the left side rotates counterclockwise around the rotary shaft 202, and the first push shaft 204a pushes the right The driving head 4063 on the side makes the driving part 40 rotate clockwise. As shown in FIG. If the handle of the commonly used circuit breaker is manually driven to continue to move toward the opening position, the first push shaft 204a pushes the drive head 4063 on the right side, and the clockwise rotation of the drive part 40 makes the second push shaft 204b meet the drive head 4063 on the right side. 4063 is engaged to form a lock, which hinders the continued rotation of the driven part 20 on the left side, thereby hindering the movement of the manual toggle handle to the opening position, and at the same time, preventing the mechanism from failing after the switch appears "closing failure". .

The head of the push rod 203 is composed of a plurality of inclined surfaces, namely the closing driving surface 2031, the opening driving surface 2032, the front sliding surface 2033, and the rear sliding surface 2034, and the multiple inclined surfaces realize the transition through the arc surface. Wherein, the front sliding surface 2033 , the closing driving surface 2031 , the rear sliding surface 2034 , and the opening driving surface 2032 are respectively arranged on two sides of the middle slot 2062 .

The operating device 100 is installed between the first circuit breaker 102 (normal circuit breaker) and the second circuit breaker 101 (standby circuit breaker), so that the second operating handle 1011 of the second circuit breaker 101 is located on the right side of the switch operating mechanism Between the first handle driving roller 201a and the second handle driving roller 201b of the driven part 20, the first operating handle 1021 of the first circuit breaker 102 is located on the first handle driving roller of the driven part 20 on the left side of the switch operating mechanism 201a, between the second handle driving rollers 201b. In this embodiment, both the first circuit breaker 102 and the second circuit breaker 101 are three-pole switches. Therefore, the left and right follower 20 are two parts of the same structure. If the first circuit breaker 102 and the second circuit breaker 101 If it is a four-pole switch, the left follower should be designed to be longer than the right follower.

The operation process of the entire switch device is shown in Figure 13 to Figure 20: when the common switch is closed and the standby switch is opened, the waist-shaped groove 4061 of the driving part 40 is against the limit shaft end 41 at the lower end of the gear shaft 4, and the left side The driven part 20 is disengaged from the driving part 40, and the arc notch 2051 on the right driven part 20 cooperates with the front edge 4031 of the driving part 40, preventing the right driven part 20 from driving the second circuit breaker 101 to close. switch to realize mechanical interlock, so that only one switch of the second circuit breaker 101 and the first circuit breaker 102 is in the closed state.

When the normal power supply fails, the motor 3 drives the gear 402 to rotate clockwise, and the gear 402 drives the drive disc 401 to rotate together through the drive boss surface 4023, so that the second drive shaft 405b on the drive disc 401 follows the rear of the push rod 203 Slide-in surface 2034 pushes push rod 203 away, because the second drive shaft 405b produces a component force along the direction of the chute on the upper lever 206 on rear slide-in surface 2034, so that the front axle pin 208a on the push rod 203, The rear shaft pin 208b and the intermediate shaft pin 209 slide along the direction of the chute on the upper lever 206 in a direction away from the drive disc 401. After the second drive shaft 405b is separated from the push rod 203, the push rod 203 is in front of the return spring 211a, Return to the original position under the spring force of the rear return spring 211b. The first pushing surface 4066a on the left driving head 4063 is engaged with the first pushing shaft 204a on the left driven part 20, thereby pushing the left driven part 20 to rotate counterclockwise. The first handle driving roller 201a on the driving groove 210 of the moving part 20 drives the first circuit breaker handle 1021 to move to the opening position.

The driving part 40 continues to drive the left driven part 20 to rotate clockwise around the rotary shaft 202 until the first pushing surface 4066a on the left driving head 4063 disengages from the first pushing shaft 204a, and the left driving head 4063 The upper drive surface transitions from the first push surface 4066a to the first transition surface 4065a. At this time, the first opening movement of the switch body is completed, and the first drive shaft 405a on the left drive head 4063 and the push rod 203 contact with the opening driving surface 2032 of the gate, and enter the meshing state. Since the component force generated by the first drive shaft 405a on the opening drive surface 2032 is opposite to the direction of movement of the push rod 203, the push rod 203 remains motionless relative to the lever, while the component force perpendicular to the direction of movement of the push rod 203 can reliably drive The driven part 20 on the left side continues to rotate until the first drive shaft 405a disengages from the push rod 203 to complete the second opening movement of the switch body. At this time, the first circuit breaker 102 completes the whole action of the opening movement. The first driving shaft 405a is separated from the driven part 20 on the left after crossing the opening driving surface 2032 .

Now, the first drive shaft 405a on the drive head 4063 on the right side pushes away the push rod 203 on the right driven part 20 along the front slide-in surface 2033, because the first drive shaft 405a is on the front slide-in surface 2033 Generate a component force along the direction of the chute on the upper lever 206, so that the intermediate pivot pin 209, the front pivot pin 208a, and the rear pivot pin 208b on the push rod 203 move away from the drive disk along the direction of the chute on the upper lever 206 40, so that the second pushing surface 4066b on the driving head 4063 on the right side and the second pushing shaft 204b on the driven part 20 on the right side enter into an engagement state. For the first circuit breaker 102 on the left side, When the second drive shaft 405b is separated from the push rod 203, the push rod 203 returns to its original position under the spring force of the front return spring 211a and the rear return spring 211b. At this time, since the driving part 40 is separated from the left driven part 20, the left driven part 20 remains in its original state, and the first circuit breaker 102 is in an open state. As shown in Figures 13 to 15, when the first circuit breaker 102 is in the closing position and during the entire movement process of the first circuit breaker 102 from the closing position to the opening position, the driven part 20 on the other side is in contact with the first The rotation of the driven parts matched by the two circuit breakers 101 is limited due to the cooperation between the front edge 4031 and the arc notch 2051 .

The second pushing surface 4066b on the driving head 4063 on the right acts on the second pushing shaft 204b on the driven part 20 on the right, so that the driven part 20 on the right rotates counterclockwise and drives the second operating handle 1011 to close. The brake position moves until the second push surface 4066b is disengaged from the second push shaft 204b, and the drive surface on the right drive head 4063 transitions from the second push surface 4066b to the second transition surface 4065b. At this time, the switch body is completed In the first closing movement, the second driving shaft 405b contacts the closing driving surface 2031 on the push rod 203, and enters into the meshing state. The second driving shaft 405b acts on the closing driving surface 2031 of the push rod 203 on the driven part 20 on the right side, because the component force generated by the second driving shaft 405b on the closing driving surface 2031 is opposite to the moving direction of the pushing rod 203 Yes, the push rod 203 remains stationary relative to the lever, and the component force perpendicular to the movement direction of the push rod 203 can reliably drive the driven part 20 on the right to continue to rotate, and the handle of the drive switch body continues to move toward the closing position until the second drive When the shaft 405b disengages from the push rod 203 on the right driven part 20, the second closing movement of the switch body is completed. At this time, the second circuit breaker 101 completes the whole process of closing movement. When the second driving shaft 405b crosses the closing driving surface 2031 , it disengages from the driven part 20 on the right side, and makes the waist-shaped groove 4061 on the driving part 40 abut against the limiting shaft end 41 of the gear shaft 4 . The arc notch 2051 on the left driven part 20 cooperates with the front edge 4031 of the driving part 40 to prevent the left driven part 20 from driving the first circuit breaker 102 to close and realize mechanical interlocking.

As shown in Figure 13, when the switch is tripped in the closed state, the first operating handle 1021 of the first circuit breaker 102 moves downward, driving the driven part 20 on the left side to rotate rapidly around the rotary shaft 202, as shown in the figure 21 to 24, the first operating handle 1021 is stopped at the tripping position, and the first push shaft 204a on the driven part 20 on the left is due to the limitation of the driving head 4063 on the right side of the driving disc 401, butts against the The first pushing surface 4066a on the right driving head 4063 restricts the rotation of the left driven part 20 .

When buckling again, the driving part 40 rotates clockwise, so that the driving head 4063 on the right side is gradually disengaged from the first pushing shaft 204a, and the driven part 20 on the left side has a gap between the handle driving slot 210 and the first operating handle 1021, so Freedom of movement. In order to make the first operating handle 1021 be buckled smoothly, as shown in Figure 22, the arc connection surface 4064 on the left drive head 4063 first contacts the second push shaft 204b, and at this time the second push shaft 204b is along the arc connection surface 4064 drives the driven part 20 on the left to rotate clockwise, so that the rear sliding surface 2034 on the push rod 203 and the second drive shaft 405b approach each other, as shown in Figure 23, and push away along the rear sliding surface 2034 The push rod 203 makes the first push surface 4066a contact with the first push shaft 204a, and enters the re-lock state. And start to drive the driven part 20 on the left side to rotate counterclockwise, so as to realize the re-locking of the first operating handle 1021 .

In the switch operating mechanism described in the utility model, the push rod 203, the upper lever 206, and the lower lever 205 of the driven part 20 are sequentially stacked, and the first drive shaft 405a, the second drive shaft 405b on the drive head 4063 and the driven part The position of the cooperative action formed by the push rod 203 of 20 is at the uppermost layer of the switch operation mechanism, the second push surface 4066b on the drive head 4063, the first push surface 4066a and the second push surface 4066b, the first push surface 4066a between The position of the cooperation between the arc connection surface 4064 and the first push shaft 204a and the second push shaft 204b on the driven part 20 is on the second floor of the switch operation mechanism, and the arc gaps 2051 of the driven parts on both sides are in contact with the drive. The double power supply interlocking cooperation formed by the front edge 4031 of the component 40 is located at the lowest layer of the switch operating mechanism. As shown in Figure 2, the three-layer cooperation is arranged in the height direction in sequence, and at the same time, it is arranged in a staggered manner in the horizontal direction. The coordination and the coordination of the first layer are closely connected in the time sequence of the movement process, so that the entire switch device with the switch operating mechanism has a compact structure and a smaller volume.

The present invention is not limited to the above-mentioned embodiment, and the driving part 40 can also only include the driving disc 401, and the limit disc 403 and the driving disc 401 are integrally arranged, and the front edge 4031 is directly formed by the arc surface 4067 of the driving part 40, but the circle The arc surface 4067 is at the same axial height as the arc notch 2051. There are no gears 402, gear shaft 4, manual operation shaft 5, and upper mounting plate 1. There is only one mounting plate, namely, the lower mounting plate 2 and the motor output shaft of the motor 3. After passing through the mounting plate 2, it is directly inserted into the shaft hole provided on the drive disk 401 that matches the output shaft of the motor.

In addition, the setting purpose of the push rod 203 that translates relative to the lever is to realize the tripping function and complete the correct tripping instruction for the switchgear with tripping protection function such as the molded case circuit breaker. The interlocking device of the automatic transfer switch of the utility model can also be applied to the automatic transfer switch which utilizes switching devices such as isolating switches as the switch body. When the interlocking device of the present invention is applied to an automatic transfer switch composed of a switching device such as an isolating switch as the switch body, the interlocking device of the present invention does not need to be provided with a push rod 203 that can translate relative to the lever, and does not need to be provided with The front and rear sliding surfaces only need to set the opening drive surface, the closing drive surface, the first push shaft and the second push shaft on the lever.

Claims (5)

1. An interlocking device for an automatic transfer switch, comprising a driving part (40), a pair of driven parts (20) and a mounting plate, and the described driving part (40) and a pair of driven parts (20) pivot respectively connected to the mounting plate, and a pair of driven parts (20) are respectively located on the left and right sides of the driving part (40), and the action of the driving part (40) is transmitted to the corresponding switch body through the driven parts (20), so that The opening and closing movement of the switch body is completed, and it is characterized in that: in the pair of driven parts (20), the driven part on the left side and the driven part on the right side are on the side corresponding to the driving part (40). The ends are respectively provided with arc notches (2051), and the driving part (40) has a limited front edge (4031), and the front edge (4031) is matched with the arc notches (2051) , used to limit the rotation of the driven part (20) on the other side when the switch body on one side is in the closing position. 2. An interlocking device for an automatic transfer switch according to claim 1, characterized in that the front edge (4031) is an arc surface with the center of rotation of the driving component (40) as the center, and the arc notch (2051) is an arc surface coupled with the front edge (4031). 3. The interlocking device of an automatic transfer switch according to claim 1, characterized in that the front edge (4031) cooperates with the circular arc notch (2051) to be used as a switch on one side When the main body is in the process of opening or closing, the rotation of the driven part (20) on the other side is restricted. 4. The interlocking device of an automatic transfer switch according to claim 1, characterized in that the pair of driven parts (20) are pivotally connected to the mounting plate through their respective rotary shafts (202), and each A driven part (20) each includes a push rod (203), an upper lever (206) and a lower lever (205) stacked in sequence, and the lower lever (205) is provided with a first push shaft (204a) and The second push shaft (204b), the push rod (203) is slidingly fitted on the upper lever (206) and is located between the first push shaft (204a) and the second push shaft (204b), and the circular arc The notch (2051) is arranged on the lower lever (205); the drive part (40) includes a drive plate (401) and a limit plate (403) arranged at the bottom of the drive plate (401), and the drive plate (401 ) is provided with a drive head (4063) and a drive shaft, the front edge (4031) is directly formed by the outer edge of the limit plate (403); the drive head (4063) is respectively connected to the first push shaft (204a ) is matched with the second push shaft (204b), and said drive shaft is matched with the push rod (203). 5. The interlocking device of an automatic transfer switch according to claim 1, characterized in that the outer edge of the limit plate (403) also forms a working gap as the rear edge (4033), and the rear edge (4033 ) is an arc surface with the center of rotation of the driving part (40) as the center, and its arc radius is smaller than the arc radius of the front edge (4031) .