Patent Grant
10643801
The present application is a 35 U.S.C. ยงยง 371 national phase conversion of PCT/CN2016/092928, filed Aug. 2, 2016, which claims priority to Chinese Patent Application Nos. 201510471096.4, 201510471225.X, and 201510471641.X, all filed Aug. 4, 2015, the contents of which are incorporated herein by reference. The PCT International Application was published in the Chinese language.
The present invention relates to the field of low-voltage apparatuses, and more particularly to an energy storage operation mechanism for a circuit breaker.
At present, an operation mechanism of a molded case circuit breaker is usually of a manual pick-and-push type, and if a user requires an electric operation, an external electric operation attachment is often provided to be mounted outside the circuit breaker to electrically and remotely control the function of the circuit breaker. However, for a high-capacity molded case circuit breaker, the external operation mechanism attachment tends to have a larger volume and weight, and thus have higher requirements for the mounting quality. In particular, when the operation mechanism cooperates with a circuit breaker body, the substantial impact vibration easily causes failure of key parts such as a circuit breaker housing and a locking device. Therefore, the external operation mechanism attachment of the existing molded case circuit breaker has huge volume, heavy weight and poor reliability. In addition, the previous energy pre-storage operation mechanism is only used on an air circuit breaker, and cannot be applied to the molded case circuit breaker and interchanged with the existing manual pick-and-push type operation mechanism to meet different market needs. Therefore, it is urge to need a novel energy pre-storage operation mechanism built in the circuit breaker to realize intelligent control of the circuit breaker. The operation mechanism has the same mounting way and tripping position as the manual pick-and-push type operation mechanism, realizes the interchange with the manual pick-and-push type operation mechanism, meets the needs of different users, and is capable of overcoming the defects of huge volume, heavy weight, high cost and poor reliability of the manual pick-and-push operation mechanism because the circuit breaker is equipped with an external electric operation attachment.
An objective of the present invention is to overcome the defects of the prior art and provide an energy storage operation mechanism for a circuit breaker, which has the advantages of compact structure and high reliability.
In order to fulfill said objective, the present invention adopts the following technical solution.
An energy storage operation mechanism for a circuit breaker comprises a side plate assembly 1, a connecting rod assembly 2, a cam assembly 3, an energy storage assembly 4, a rotating shaft assembly 5 and a control assembly 6. A rotatable driving shaft 30 is mounted in the side plate assembly 1. The connecting rod assembly 2 and the cam assembly 3 are mounted on the driving shaft 30. The energy storage assembly 4 and the rotating shaft assembly 5 are mounted at one side of the driving shaft 30, and the control assembly 6 is mounted at the other side of the driving shaft 30. The connecting rod assembly 2 is connected with the rotating shaft assembly 5. The cam assembly 3 may be in contact and connection with the energy storage assembly 4 to drive the energy storage assembly 4 to store energy. The control assembly 6 may be connected with the connecting rod assembly 2 and the cam assembly 3 in a latching manner.
Further, the connecting rod assembly 2 is connected with the rotating shaft assembly 5. The cam assembly 3 may be in contact and connection with the energy storage assembly 4 to push the energy storage assembly 4 to store energy. The energy storage assembly 4 can drive the rotating shaft assembly 5 by the connecting rod assembly 2 to realize the switching-on operation while releasing energy. The control assembly 6 may be connected with the connecting rod assembly 2 and the cam assembly 3 in a latching manner. The control assembly 6 and an interlocking assembly 7 are connected in a driving manner to make the energy storage assembly 4 release energy via the cam assembly 3 to finish the switching-on operation. The rotating shaft assembly 5 resets by tripping the control assembly 6 from the connecting rod assembly 2 to finish a switching-off operation.
Further, the energy storage operation mechanism further comprises the interlocking assembly 7 which is connected with the control assembly 6 in a driving manner. The control assembly 6 comprises a switching-off half-shaft 61, a switching-off latch 62, a switching-on half-shaft 63, a switching-on latch 64, a switching-on button 65 and a switching-off button 66. The switching-on latch 64 may be connected with the cam assembly 3. The switching-off latch 62 may be connected with the connecting rod assembly 2. The interlocking assembly 7 comprises a switching-on guide rod 72 and a switching-off guide rod 73. The switching-on button 65, a driving guide rod 74, the switching-on guide rod 72, the switching-on half-shaft 63 and the switching-on latch 64 are connected in sequence in a driving manner to finish a switching-on operation of the energy storage operation mechanism 99. The switching-off button 66, the switching-off guide rod 73, the switching-off half-shaft 61 and the switching-off latch 62 are connected in sequence in a driving manner to finish a switching-off operation of the energy storage operation mechanism 99.
Further, in a switching-off energy storage state, a driving shaft 30 is rotated to make the cam assembly 3 to jack an energy storage lever 42 of the energy storage assembly 4 in a rotating process, such that the energy storage assembly 5 stores energy, and meanwhile, the switching-on latch 64 of the control assembly 6 pushes the cam assembly 3 to further finish energy storage when the cam assembly 3 rotates in place. In addition, the energy storage lever 42 no longer extrudes the connecting rod assembly 2, and the connecting rod assembly 2 rotates to make the end part of the switching-off latch 62 of the control assembly 6 slide into a U-shaped groove 213 of the connecting rod assembly 2, such that the energy storage operation mechanism of the circuit breaker is converted into the switching-off energy storage state. In the switching-off energy storage state, the control assembly 6 drives the switching-on half-shaft 63 by the switching-on guide rod 72 of the interlocking assembly 7 to enable the switching-on latch 64 to be tripped from the cam assembly 3, and the energy storage assembly 4 releases energy and hits the connecting rod assembly 2 to pull the rotating assembly 5 to finish the switching-on operation; in addition, the end part of the switching-off latch 62 pushes the U-shaped groove 213 to stop the connecting rod assembly 2 from rotating and resetting, such that the energy storage operation mechanism for the circuit breaker is converted into a switching-on energy release state. In the switching-on energy release state, the control assembly 6 drives the switching-off half-shaft 61 by the switching-off guide rod 73 of the interlocking assembly 7 to make the end part of the switching-off latch 63 separate from the U-shaped groove 213, and further no longer stop the connecting rod assembly 2 from resetting; the connecting rod assembly 2 drives the rotating shaft assembly 5 to rotate to finish a switching-off operation under a restoring force of main tension springs 49, such that the energy storage operation mechanism for the circuit breaker is converted into the switching-off energy release state. In a switching-on energy release state, the driving shaft 30 is rotated to make the cam assembly 3 jack the energy storage lever 42 of the energy storage assembly 4 in a rotating process, such that the energy storage assembly 4 stores energy; meanwhile, the switching-on latch 64 of the control assembly 6 pushes the cam assembly 3 to further finish energy storage and is converted to the switching-on energy storage state when the cam assembly 3 rotates in place.
Further, the connecting rod assembly 2 comprises a jump pin 21, a first connecting rod 22 and a second connecting rod 23 which are connected in sequence. The jump pin 21 is mounted on the driving shaft 30 and is connected with the control assembly 6 in a latching manner. The end part of the second connecting rod 23 is connected with the rotating shaft assembly 5 in a driving manner. The first connecting rod 22 may be in contact and connection with the energy storage assembly 4 arranged above the first connecting rod. The energy storage assembly 4 acts on the first connecting rod 22 while releasing energy, such that the connecting rod assembly 2 drives the rotating shaft assembly 5 to realize the switching-on operation. The jump pin 21 is mounted on the driving shaft 30 via a jump pin mounting hole 210 in the middle of the jump pin. A jump pin hook 211 for mounting a jump pin spring 25 and the U-shaped groove 213 connected with the control assembly 6 in a latching manner are arranged at two sides of the jump pin 21 respectively. The jump pin 21 is further provided with a jump pin connecting end 214 which is rotatably connected with the corresponding end part of the first connecting rod 22.
Further, the first connecting rod 22 comprises two first connecting rod mounting sheets 221 which are arranged side by side. The second connecting rod 23 comprises two second connecting rod mounting sheets 231 which are mounted side by side, wherein the end part of each second connecting rod mounting sheet 231 is correspondingly provided with a connecting rod driving hole 232 which may be connected with the rotating shaft assembly 5 of the circuit breaker. The corresponding end part of the two first connecting rod mounting sheets 221 and the two second connecting rod mounting sheets 231 are pivotally connected via connecting rod connecting pins 216. The jump pin 21 is provided with the jump pin connecting end 214 which is mounted between the corresponding end parts of the first connecting rod mounting sheets 221. A hitting roller 24 is clamped between the two first connecting rod mounting sheets 221 and is capable of rotating relative to the first connecting rod mounting sheets 221. The edge of the first connecting rod 22 may be in contact and connection with a shaft sleeve 37 on the driving shaft 30.
Further, the cam assembly 3 fixedly mounted on the driving shaft 30 comprises two groups of cam groups 31 and 32 between which the connecting rod assembly 2 is arranged. The control assembly 6 is arranged at one side of the two cam groups 31 and 32. The energy storage lever 42 of the energy storage assembly 4 is arranged above the two cam groups 31 and 32. The two cam groups 31 and 32 may be in contact and connection with the energy storage assembly 4 to push the energy storage assembly 4 to store energy.
Further, the two cam groups 31 and 32 are the first cam group 31 and the second cam group 32. An energy storage indicator 75 and a switching-on/off indicator 67 are rotatably mounted on a first sidewall 11 and a second sidewall 12 respectively. A disc 34 of the first cam group 31 is in contact and connection with the energy storage indicator 75, and the rotating shaft assembly 5 may be in contact and connection with the switching-on/off indicator 67.
Further, the energy storage assembly 4 comprises an energy storage mounting shaft 41 which is arranged fixedly. The energy storage lever 42 which is capable of rotating around the energy storage mounting shaft 41 is mounted on the energy storage mounting shaft 41. The rotating shaft assembly 5 is provided with a first cantilever 51 which may be in coupling connection with a contact system 96 of the circuit breaker. The first cantilever 51 is further connected with the end part of the connecting rod assembly 2 of the energy storage operation mechanism 99. The energy storage assembly 4 may drive the connecting rod assembly 2 to drive the rotating shaft assembly 5 to rotate while releasing energy, thereby driving the contact system 96 to finish a switching-on operation. In addition, the main tension springs 49 which are used for driving the rotating shaft assembly 5 to reset are also connected between the first cantilever 51 and the energy storage mounting shaft 41.
Further, the energy storage operation mechanism for the circuit breaker is connected with the circuit breaker through the side plate assembly 1. The storage assembly 4 comprises the energy storage lever 42 and an energy storage spring 48 which is connected with the energy storage lever 42. One end of the energy storage spring 48 is mounted to one side of the side plate assembly 1, which is connected with the circuit breaker, and the other end of the energy storage spring 48 is connected with one end of the energy storage lever 42. The energy storage lever 42 and the energy storage spring 8 are in an L shape and rotatably arranged at one side of the side plate assembly 1 away from the circuit breaker. The connecting rod assembly 2 and the cam assembly 3 are mounted on the driving shaft 30 and located below the energy storage lever 42. The rotating shaft assembly 5 is arranged between the energy storage spring 48 and the driving shaft 30. One end of the connecting rod assembly 2 is connected with the rotating shaft assembly 5, and the other end of the connecting rod assembly 2 is also connected with the control assembly 6 for controlling the switching-on/switching-off operation. The driving shaft 30 is arranged between the rotating shaft assembly 5 and the control assembly 6.
Further, the first cantilever 51 is provided with a connecting rod mounting hole 511 in which a connecting pin 54 which is rotatably connected with the end part of the connecting rod assembly 2 in a hole-shaft manner is arranged. One end of each main tension spring 49 is fixed to the connecting pin 54, and the other end thereof is fixed to the energy storage mounting shaft 41. In addition, the first cantilever 51 is further provided with a driving mounting hole 512 which may be in coupling connection with the contact system 96. The driving mounting hole 512 is arranged in one end of the first cantilever 51, and the other end of the first cantilever 51 is connected with a main shaft 50 of the rotating shaft assembly 5. A connecting rod mounting hole 51 is formed in the middle of the first cantilever 51.
Further, the energy storage operation mechanism comprises two main tension springs 49 which are arranged at two sides of the first cantilever 51 respectively. Two ends of each main tension spring 49 are fixedly connected to the end part of the connecting pin 54 and the energy storage mounting shaft 41 respectively. The energy storage lever 42 comprises two energy storage mounting sheets 521 which are arranged side by side, and one energy storage mounting shaft 41. The energy storage mounting shaft 41 penetrates through the two energy storage mounting sheets respectively. The other end of each of the two main tension springs 49 is fixed on the corresponding energy storage mounting shaft 41 between the two energy storage mounting sheets 421. The energy storage mounting shaft 41 comprises a first mounting shaft in the middle and two second mounting shafts which are located at two sides of the first mounting shaft respectively. The diameter of the first mounting shaft is larger than that of each second mounting shaft. The other end of each of the two main tension springs 49 is mounted to a joint between each of the second mounting shafts and the first mounting shaft respectively. The two energy storage mounting sheets 421 are mounted on the second mounting shafts to limit the two main tension springs 49.
Further, the first cam assembly 31 and the second cam assembly 32 each comprise a disc 34 and a cam 33 of the same structure, wherein the disc 34 and the cam 33 are fixedly connected by a cam rivet 36, and a cam roller 35 which is capable of rotating relatively is also clamped between the disc 34 and the cam 33. The cam roller 35 may be in contact and connection with the switching-on latch 64 of the control assembly 6. The cams 33 of the first cam assembly 31 and the second cam assembly 32 are in correspondingly contact and connection with energy storage bearings 43 at two sides of the end part of the energy storage lever 42 of the storage assembly 4. The disc 34 of the first cam group 31 may also be provided with a disc notch 342 which may be in contact and connection with a circular indicator surface 752 of the energy storage indicator 75.
Further, when a tripping mechanism for a circuit breaker is switched on, the energy storage assembly 4 of the circuit breaker releases energy to hit the hitting roller 24, such that the connecting rod connecting pin 26 moves to a position below a connecting line of the connecting rod driving hole 232 and the jump pin connecting end 214, and the connecting rod assembly 2 actuates to make the connecting rod assembly 5 rotate to drive the circuit breaker to be switched on.
According to the energy storage operation mechanism for the circuit breaker of the present invention, by redesign of the layout of various assembles of the energy storage operation mechanism of the circuit breaker, i.e., the energy storage assembly and the rotating shaft assembly are located at one side of the driving shaft, and the control assembly is located at the other side of the driving shaft, a compact structure of the energy storage operation mechanism is realized to facilitate assembly and mounting. Meanwhile, various assemblies may be kept away without interference, and therefore the use efficiency is improved.
Specific embodiments of an energy storage operation mechanism of the circuit breaker of the present invention will be further described below with reference to the examples of the present invention provided by
The energy storage operation mechanism 99 comprises a side plate assembly 1, a connecting rod assembly 2, a cam assembly 3, an energy storage assembly 4, a rotating shaft assembly 5, a control assembly 6, an interlocking assembly 7 and a handle assembly 8. The connecting rod assembly 2 and the cam assembly 3 in
The energy storage operation mechanism 99 of the present invention has four operating states, i.e., a switching-off energy release state, a switching-off energy storage state, a switching-on energy release state and a switching-on energy storage state as shown in
Specifically, when the energy storage operation mechanism 99 is in the switching-off energy release state, the driving shaft 30 is driven by the handle assembly 8 to rotate, thereby driving the cam assembly 3 to rotate; the cam assembly 3 jacks the energy storage lever 42 in a rotating process, such that the energy storage assembly 4 stores energy, and meanwhile, the switching-on latch 64 of the control assembly 6 pushes the cam assembly 3 to further finish energy storage when the cam assembly 3 rotates in place. In addition, the energy storage lever 42 no longer extrudes the connecting rod assembly 2, and the rotating shaft assembly 2 rotates to make a latch bearing 622 at the end part of the switching-off latch 62 slide into a U-shaped groove 213 of the connecting rod assembly 2, such that the energy storage operation mechanism 99 is converted into the switching-off energy storage state as shown in
When the energy storage operation mechanism 99 is in the switching-off energy storage state, a switching-on button 65 is pushed, such that a switching-on guide rod of the interlocking assembly 7 drives the switching-on half-shaft 63 to enable the switching-on latch 64 to be tripped from the cam assembly 3, the energy storage assembly 4 releases energy and hits the connecting rod assembly 2 to pull the rotating shaft assembly 5 to finish the switching-on operation; in addition, the latch bearing 622 pushes the U-shaped groove 213 to stop the connecting rod assembly 2 from rotating and resetting, such that the energy storage operation mechanism 99 is converted into the switching-on energy release state as shown in
When the energy storage operation mechanism 99 is in the switching-on energy release state, the following two operations may be selected. In the first operation, after the switching-off button 66 is pushed, the switching-off half-shaft 61 is driven by the switching-off guide rod 73 to make the latch bearing 622 of the switching-off latch 62 separate from the U-shaped groove 213, and further no longer stop the connecting rod assembly 2 from resetting; the connecting rod assembly 2 drives the rotating shaft assembly 5 to rotate to finish a switching-off operation under a restoring force of main tension springs 49, and the energy storage assembly 4 extrudes the connecting rod assembly 2 again, such that the energy storage operation mechanism 99 at this moment is converted into the switching-off energy release state as shown in
In the second operation, when the energy storage operation mechanism 99 is in the switching-on energy release state, the handle assembly 8 is pulled to finish the energy storage to the energy storage assembly 4; the energy storage operation mechanism 99 at this moment is converted to the switching-on energy storage state, wherein the connecting rod assembly 2 is in a state the same as the state in the switching-on energy release in
The side plate assembly 1 in
The operation mechanism for the circuit breaker of the present invention may be an interchanged operation mechanism. The interchanged operation mechanism comprises an energy storage operation mechanism 99 which is connected and mounted on a contact system 96 of a molded case circuit breaker (as shown in
The rotating shaft assembly 5 comprises a main shaft 50 mounted on the side plate assembly 1. A first cantilever 51, a second cantilever 52 and a third cantilever 53 are arranged in the middle of the main shaft 50. A fourth cantilever 57 and a fifth cantilever 58 are also arranged at two ends of the main shaft 50 respectively, and a first bearing 55 and a second bearing 56 which are used for connecting the rotating shaft assembly 5 and the side plate assembly 1 and are adjacent to the second cantilever 52 and the third cantilever 53 respectively are arranged on the main shaft 50. The first cantilever 51 in
The cam assembly 3 comprises a first cam group 31 and a second cam group 32 which are coaxially and fixedly mounted on the driving shaft 30. The first cam group 31 and the second cam group 32 are identical in structure and each comprises a disc 34 and a cam 33. The disc 34 and the cam 33 in
The connecting rod assembly 2 comprises a second connecting rod 23, a first connecting rod 22 and a jump pin 22 which are connected in sequence, and the second connecting rod 23 and the first connecting rod 22, as well as the first connecting rod 22 and the jump pin 21 are rotatably connected with each other, respectively. The jump pin 21 is kept rotating at one side of the first connecting rod 22 around the end part of the first connecting rod 22. The actions of the jump pin and the first connecting rod are not interfered with each other, so that the the action way of the connecting rod assembly is simple and accurate. Two ends of the first connecting rod 22 in
The jump pin 21 is also provided with a U-shaped groove 213 which is used for limiting and connecting the switching-off latch 62 of the control assembly 6. One side of the jump pin 21, which is provided with the U-shaped groove 213, is also provided with a jump pin connecting end 214 which is rotatably connected with the corresponding end part of the first connecting rod 22. Specifically, a jump pin spring 25 configured to pull and reset is mounted on the jump pin hook 211. One end of the jump pin spring 25 is mounted on the jump pin hook 211, and the other end there of is mounted on the side plate assembly 1. The jump pin is pulled and reset by means of one jump pin spring on the jump pin hook. Compared with the exiting energy operation mechanism in which the jump pin is pulled and reset by two springs at two sides, the jump pin spring mounting structure in the present invention is simple and avoids the rubbing with other components of the connecting rod assembly and the energy storage assembly in the action process at the same time, and further reduces the fault rate of the energy storage operation mechanism and prolongs the service life of the energy storage operation mechanism. In addition, the end part of the switching-off latch 62 is provided with a latch bearing 622 which is matched an connected with the U-shaped groove 231 in a limiting manner. An inside wall of the U-shaped groove 213 comprises an upper U-shaped groove plane 2131 and a lower U-shaped groove plane 2132 which face each other. The jump pin 21 may be driven by the jump pin spring 25 to rotate along the jump pin mounting hole 210 in the process from switching-off energy release to switching-off energy storage, such that the latch bearing 622 at the end part of the switching-off latch 62 slides into the U-shaped groove 213 along a first jump pin contour surface 212 at the side surface of the jump pin 21 to finish limiting connection, and meanwhile, the lower U-shaped groove plane 2131 is in contact and connection with the latch bearing 622 in the switching-off energy storage state. The upper U-shaped groove plane 2132 may be in contact and connection with the latch bearing 622 in the switching-on state. The latch bearing 622 in the switching-off energy release state may be in contact with the first jump pin contour surface 212 at one side, where the U-shaped groove 213 is formed, of the jump pin 21. During energy storage, the jump pin pushes the latch bearing through the U-shaped groove to realize limiting. Compared to most ways in which the energy storage operation mechanism is limited by other fixing shafts, the limiting and latching way of the jump pin in the present invention is simple in structure an stable in latching and effectively improves the action reliability of the jump pin in the switching-on process or the switching-off process.
The jump pin 21 may be of a polygonal structure, and the jump pin hook 211 and the U-shaped groove 213 are arranged at two sides of the jump pin 21 respectively.
The energy storage assembly 4 comprises an energy storage lever 42, an energy storage spring 48 and a base support 46, wherein one end of the energy storage spring 48 is fixedly mounted on the base support 46, and the other end of the energy storage spring 48 is connected with the energy storage lever 42. One end of the energy storage lever 42 in
A rotatable driving shaft 30 is arranged at one side of the energy storage lever 42. The connecting rod assembly 2 and the cam assembly 3 are arranged on the driving shaft 30. The cam assembly 3 may be in contact and connection with the driving end of the energy storage lever 42 and pushes the energy storage lever 42, such that the energy storage end stores energy. The connecting rod assembly 2 may be in contact and connection with the energy storage lever 42, and the end part of the connecting rod assembly 2 is connected with the rotating shaft assembly 5 for driving the switching-on operation and the switching-off operation. In the switching-on process, the energy storage lever 42 hits the connecting rod assembly 2, such that the end part thereof pulls the rotating shaft assembly 5 to finish the switching-on operation. In addition, in the switching-on process or the switching-off process, the connecting rod assembly 2 and the cam assembly 3 are kept moving at one side of the energy storage lever 42. The connecting rod assembly and the cam assembly are arranged at one side of the energy storage assembly. The energy storage assembly is located above the connecting rod assembly and the cam assembly, thereby ensuring that the energy storage assembly does not interfere with the connecting rod assembly in the movement process, the energy storage lever is mounted just by one energy storage mounting shaft such that the overall structure is compact, and the reliability of the energy storage assembly is improved. The problems of complicate process and high cost of the prior art in which the energy storage mounting shaft needs to be cut off from the middle to become two short shafts and then the two short shafts are riveted to two sides of the energy storage assembly in order to keep the connecting rod assembly away are avoided. The cam assembly 3 may be driven by the driving shaft 30 to enable the cam 22 to jack the driving end of the energy storage lever 42, such that the energy storage lever 42 rotates to compress the energy storage spring 48 to finish energy storage. In addition, in the energy release process, the movement direction of the riving en of the energy storage lever 42 is opposite to the movement direction of the cam 33. The cam is in stable contact with the energy storage bearing, thereby ensuring the stability of the energy storage process. The movement direction of the cam is opposite to the movement direction of the energy storage lever, such that the energy storage assembly may not cause secondary hit to the cam assembly, and further the cam assembly after the switching-off operation is accurate to position, and the energy loss in the switching-on process is reduced.
The energy storage lever 42 comprises at least two energy storage mounting sheets 421 which are arranged side by side. The energy storage mounting shaft 41 in
The base support 46 in
When the energy storage assembly 4 is mounted, the energy storage spring 48 is fixedly mounted on the base support 46 having the U-shaped structure first, the support guide rail 471 on the base mounting sheet 47 then props against the guiding shaft 13 of the side plate assembly 1, next, the base support 46 is pushed till the guide rail terminal 472 props against the guiding shaft 13 and does not continue to slide any more, and the positioning pin fixing holes 111 of the side plate assembly 1 at this moment correspond to the centers of the support mounting holes 473, the support positioning pin 14 sequentially passes through the positioning pin fixing hole 111 and the support mounting hole 473 and a retainer ring is clamped in the clamping groove 141 of the support positioning pin 14, and therefore, the mounting of the energy storage assembly 4 is completed. The energy storage assembly is mounted in a simple way, effectively improves the assembly efficiency of the energy storage operation mechanism, facilitates the maintenance and replacement of the energy storage assembly and improves the practicability of the device. Particularly, the base support 46 is mounted to one end of the side plate assembly 1, the base mounting sheets 47 at two sides of the base support 46 are flush with the side edges at one end of the first side plate 11 and at one end of the second side plate 12, and the base supporting sheets 461 are located at one side of the side plate assembly 1, which is connected to the circuit breaker. Furthermore, the energy storage lever 42 is opposite to the base supporting sheet 461 of the base support 46, forms an L shape with the energy storage spring 48, and is arranged at one side of the side plate assembly 1 away from the circuit breaker.
The energy storage operation mechanism 99 further comprises main tension springs 49, wherein one end of each main tension spring 49 is fixedly connected with the energy storage mounting shaft 41, and the other end thereof is fixedly connected with the connecting pin 54 on the rotating shaft assembly 5. Specifically, the first cantilever 51 of the rotating shaft assembly 5 is provided with a connecting rod mounting hole 511, the end part of the second connecting rod 23 of the connecting rod assembly 2 is provided with a connecting rod driving hole 232, the connecting pin 54 may pass through the connecting rod mounting hole 511 and the connecting rod driving hole 232 at the same time to connect and mount the second connecting rod 23 and the first cantilever 51, and two ends of the connecting pin 54 may be provided with the main tension spring 49 respectively. Particularly, the energy storage mechanism 99 comprises two main tension springs 49 which are arrange at two sides of the first cantilever 51 respectively, wherein two ends of each main tension spring 49 are fixedly connected to the end part of the connecting pin 54 and the energy storage mounting shaft 41 respectively. Furthermore, one end of each of the main tension springs 49 is fixed on the rotating shaft assembly 5, and the other end thereof is fixed on the corresponding energy storage mounting shaft 41 between the two energy storage mounting sheets 421. The energy storage mounting shaft 41 comprises a first mounting shaft in the middle and two second mounting shafts at two sides of the first mounting shaft, wherein the diameter of the first mounting shaft is larger than that of each second mounting shaft. The other end of each of the two main tension spring 49 is mounted at the joint between each of the second mounting shafts and the first mounting shaft. The two energy storage mounting sheets 421 are mounted on the second mounting shafts to limit the two main tension springs 49. The mounting position of the main tension springs 49 not only makes the structure compact, while not affecting the rotation of the energy storage lever and facilitating the assembly and mounting of the main tension springs. The fixed mounting position of the main tension springs 49 on the energy storage mounting shaft 41 is not limited to the above-mentioned embodiment, and the main tension springs 49 may be fixedly mounted on the corresponding energy storage mounting shaft 41 between the two energy storage mounting sheets 421 or fixedly mounted on the corresponding energy storage mounting shafts 41 at two sides of the two energy storage mounting sheets 421.
The control assembly 6 comprises a switching-off half-shaft 61, a switching-off latch 62, a switching-on half-shaft 63, a switching-on latch 64, a switching-on button 65 and a switching-off button 66. The interlocking assembly 7 comprises an interlocking guide rod 71, a switching-on guide rod 72, a switching-off guide rod 73, a driving guide rod 74 and an energy storage indicator 75. The switching-on guide rod 72 and the switching-off guide rod 73 are mounted in parallel. The switching-off semi-shaft 61, the switching-off latch 62 and the switching-on half-shaft 63 are mounted between the switching-on guide rod 72 and the switching-off guide rod 73, and the switching-on half-shaft 63 is arranged relatively perpendicular to one end of the switching-on guide rod 72, and the switching-off half-shaft 61 is arranged relatively perpendicular to the other end of the switching-on guide rail 72. The switching-off latch 62 is located between the switching-off half-shaft 61 and the switching-on half-shaft 63. One end of the switching-off latch 62 is connected to the middle part of the switching-off half-shaft 61 in a latching manner.
One end of the switching-on half-shaft 63 is connected with the switching-on latch 64 in a driving manner, and the other end thereof and the driving guide rod 74 face each other. The switching-on guide rod latch 724 at one end of the switching-on guide rod 72 may be provided between the switching-on half-shaft 63 and the driving guide rod 74. At this moment, the switching-on button 65 is pushed to drive the switching-on half-shaft 63 to rotate via the driving guide rod 74 and the switching-on guide rail 72, thereby driving the switching-on latch 64 to be tripped from the cam assembly 3, such that the energy storage assembly 4 releases energy to drive the connecting rod assembly 2 to realize the switching-on operation. When the switching-on guide rod latch 724 is arranged at the side where the switching-on half-shaft 63 and the driving guide rod 74 are located, the switching-off button 65 fails and cannot act on the switching-on half-shaft 63 through the driving guide rod 74. The interlocking guide rod 71 is mounted on the driving shaft 30. One end of the interlocking guide rod 71 may be in contact and connection with the rotating shaft assembly 5 and the energy storage indicator 75, and the other end thereof is in contact and connection with the switching-on guide rod 72. In the switching-off energy storage state, the energy storage indicator 75 makes the interlocking guide rod 71 not limit the switching-on guide rod 72, and the switching-on guide rod 72 resets and rotates under the action of a switching-on guide rod spring, such that the switching-on guide rod latch 724 is provided between the driving guide rod 74 and the switching-on half-shaft 63. Under the other three states, both the rotating shaft assembly 5 and the energy storage indicator 75 can drive the switching-on guide rod 72 to move through the interlocking guide rod 71, such that the switching-on guide rod latch 724 is arranged at the side where the driving guide rod 74 and the switching-on half-shaft 63 are located, and therefore the switching-on button fails.
One end of the switching-off latch 62 is connected with the switching-off half-shaft 61 in a latching manner, and the other end thereof is connected with the connecting rod assembly 2 in a latching manner. One end of the switching-off guide rod 72 is in contact and connection with the end part of the switching-off half-shaft 61, and the other end of the switching-off guide rod 72 is connected with the switching-off button 66 in a driving manner. Under the switching-on state, when the switching-off button 66 is pushed, the switching-off guide rod 73 drives the switching-off half-shaft 61, such that the switching-off latch 62 is tripped from the connecting rod assembly 2, and the rotating shaft assembly is driven by the connecting rod assembly 2 to realize the switching-off operation. Meanwhile, one end of the switching-off half-shaft 61 is in contact and connection with the switching-off guide rod 73, and the other end thereof may be in contact and connection with a switching-on guide rod limiting boss 725 of the switching-on guide rod 72, such that when the switching-off button 66 is pushed or the switching-off half-shaft 61 is directly pushed, the switching-off half-shaft 61 can drive the switching-on guide rod 72 to move, such that the switching-on guide rod latch 724 is arranged at the side where the driving guide rod 74 and the switching-on half-shaft 63 are located, and therefore the switching-on button fails to realize interlocked protection.
Specifically, the switching-off half-shaft 61 in
A latch tail end 623 at one end of the switching-off latch 62 in
One end of the switching-on half-shaft 63 in
The switching-on latch 64 in
An interlocking guide rod positioning hole 711 which is used for mounting the interlocking guide rod 71 to the driving shaft 30 is formed in the middle of the interlocking guide rod 71 in
The switching-on guide rod 72 in
One end of the switching-off guide rod 73 in
The driving guide rod 74 in
An indicator positioning hole 751 which is connected with the driving shaft 30 is formed in the middle of the energy storage indicator 75. One end of the energy storage indicator 75 is provided with a circular indicator surface 752 which is in contact and connection and the disc 34, and the other end of the energy storage indicator 75 is provided with an indicator plane 753 which is in contact and connection with the curved interlocking guide rod surface 712. The edge of the energy storage indicator 75 is also provided with an curved indicator surface 754 which is in contact and connection with the circular interlocking guide rod surface 713 at the end part of the curved interlocking guide rod surface 712. In addition, the edge of the energy storage indicator 75 is also provided with an indicator spring hook 755 for mounting an indicator spring.
The specific action states of various assemblies of the energy storage operation mechanism 99 of the present invention in the switching-on process or the switching-off process are as follows: switching-off energy storage, switching-off energy storage, switching-on energy release and switching-on energy storage.
During the switching-off energy release, when the energy storage operation mechanism 99 is in the switching-off energy release state, there is no elastic extrusion and connection between the cam assembly 3 and the energy storage assembly 4 as shown in
During the switching-off energy storage, when the control assembly 6 as shown in
During the switching-on energy release, when the energy storage operation mechanism 99 is in the switching-off energy storage state and the switching-off button 66 or the switching-off half-shaft 61 is not pushed, the switching-on button 65 is pushed to drive the driving rod protrusion 741 to be in contact and connection with the switching-on guide rod latch slope 7241 on the switching-on guide rod latch 724 and drive the switching-on guide rod latch 724 to drive the switching-on half-shaft 63 to turn around a tripping position, and further the switching-on latch 64 is tripped from the cam roller 35, the energy storage spring 48 releases energy, and the hitting pin 44 pushes the connecting rod assembly 2 and the rotating shaft assembly 5 to finish the switching-on process. When the control assembly 6 and the interlocking assembly 7 as shown in
During the switching-on energy storage, the control assembly 6 as shown in
From the above, the connecting rod assembly 2 and the cam assembly 3 are mounted at one side of the energy storage assembly 4, and therefore, the movement direction of the energy storage assembly 4 is opposite to that of the cam assembly 3 in a switching-on process, and may not cause second hit to the cam assembly 3. After the switching-off operation, the cam assembly 3 is positioned more accurately and stably, and the energy loss of the switching-on process is reduced, the use efficiency is improved, and the structure is compact. However, when the existing energy storage operation mechanism is switched on, the movement direction of the energy storage assembly is the same as that of the cam assembly, and the potential danger of secondary hit will be caused.
In addition, under the condition that the energy storage operation mechanism 99 is in the switching-off energy storage state and the switching-off button 66 or the switching-off half-shaft 61 is not pushed, the switching-on guide rod latch 724 can enter the space between the switching-on boss 632 and the driving guide rod boss 741, and the switching-on button 65 is effective. Under any state, the switching-on guide rod latch 724 is located at the side where the switching-on boss 632 and the driving guide rod protrusion 741 are locate, and the switching-on button 65 fails. The switching-on guide rod latch slope on the switching-on guide rod latch at one end of the switching-on guide rod always presses the switching-on half-shaft in the switching-on process, and therefore the reliability of the switching-on process is improved. The switching-on guide rod limiting boss at the other end of the switching-on guide rod can ensure that the energy storage operation mechanism makes the switching-on button fail under the condition that it is in the switching-off energy storage state or the switching-off button or the switching-off half-shaft is not pushed, and therefore the use safety of the energy storage operation is improved. Meanwhile, the interlocking guide rod realizes up-down linkage of the rotating shaft assembly and the control assembly, such that the energy storage operation mechanism is compact in structure and improves the use efficiency.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it should not be considered that the specific implementation of the present invention is limited to these descriptions. Those common skilled in the art may also make some simple deductions or replacements without departing from the concept of the present invention, all of these should be considered to fall into the protection scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2015 1 0471096 | Aug 2015 | CN | national |
| 2015 1 0471225 | Aug 2015 | CN | national |
| 2015 1 0471641 | Aug 2015 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2016/092928 | 8/2/2016 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2017/020816 | 2/9/2017 | WO | A |
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