CN112735876B - Mechanical interlocking device of miniature circuit breaker - Google Patents
Mechanical interlocking device of miniature circuit breaker Download PDFInfo
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- CN112735876B CN112735876B CN202011103866.7A CN202011103866A CN112735876B CN 112735876 B CN112735876 B CN 112735876B CN 202011103866 A CN202011103866 A CN 202011103866A CN 112735876 B CN112735876 B CN 112735876B
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- circuit breaker
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- interlocking
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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Abstract
The invention provides a mechanical interlocking device of a miniature circuit breaker, which comprises: mounting a plate; the first circuit breaker is fixed on the mounting plate and is provided with a first handle; the second circuit breaker is fixed on the mounting plate and is provided with a second handle; the interlocking plate is rotatably arranged on the mounting plate and used for realizing mechanical interlocking between the first circuit breaker and the second circuit breaker; the rotating axis of the interlocking plate is positioned beside the middle area of the first circuit breaker and the second circuit breaker; the two ends of the interlocking plate are provided with a first extending part and a second extending part. The interlocking device does not need to have an arrangement space between the two circuit breakers, and can be suitable for occasions without the arrangement space between the two circuit breakers or occasions with the arrangement space but inconvenient fixed installation structures. The arrangement of the interlocking plate is flexible, the whole structure is simple and compact, the control is accurate, the mechanical interlocking between the two circuit breakers can be realized, the misoperation can be avoided, and the safety and the reliability are effectively improved.
Description
Technical Field
The invention relates to the technical field of high-voltage switch control, in particular to a mechanical interlocking device of a miniature circuit breaker.
Background
At present, in the field of control and power distribution equipment, a switch interlocking device is often added for the purpose of power utilization and equipment safety of users. In some use occasions, only one path of the interlocking power supply needs to be put into use, and when one path is put into use, the other path needs to be cut off, so that the interlocking is used for locking the two paths of loops. The existing techniques include electrical and mechanical interlocking, but users have more hope to adopt mechanical interlocking from the viewpoint of safety and reliability.
For example, the interlocking device (an interlocking device) for a dual power switch disclosed in chinese patent application publication No. CN102881488A includes a mounting base plate, a mounting frame (i.e., a supporting frame) and two power switches, where the power switches are placed on the mounting base plate and fixed with the mounting frame by screws. The center of mounting bracket is equipped with the rotation axis, and interlocking pole (being interlock board) passes through the rotation axis and rotates and install on the mounting bracket, and the both ends of interlocking pole are provided with U-shaped interlocking groove, and last control lever of switch drives the interlocking pole through interlocking groove and rotates. The device is only suitable for being used between two close switches, and can force one switch to be switched off when the other switch is switched on, but the device cannot realize that the two switches are both in the switching-off position, and the safety is poor.
To this end, the chinese utility model patent with the publication number CN204167153U discloses a activestandby miniature circuit breaker mechanical interlocking device (another interlocking device), including first circuit breaker, second circuit breaker and the interlocking subassembly of setting between two circuit breakers, first circuit breaker top is equipped with first turning handle, and second circuit breaker top is equipped with the second turning handle. The interlocking subassembly includes backup pad (being the support frame) and rotor plate (being the interlocking board), and the backup pad passes through the bolt fastening on the bottom plate, and the backup pad is located between two circuit breakers, and the rotor plate passes through the rotatable setting of screw at the backup pad top, and the both ends of rotor plate are equipped with left and right respectively and dial the post. When the double-circuit power supply switching device is used, the rotating handle of one circuit breaker is pulled, the rotating plate is forced to rotate through the shifting column at one end, the shifting column at the other end drives the other rotating handle to complete switching, and at most only one circuit breaker is in a switching-on state in the double-circuit power supply switching process. Of course, the interlocking device can also realize that the two circuit breakers are in the opening state, and any rotating handle and the shifting column can be in non-contact state.
Above-mentioned two kinds of interlocking device, its interlocking board all rotates through the support frame and installs on the mounting panel, the support frame is equivalent to mounting structure, and be located between two circuit breakers, that is to say must possess the space that sets up that is used for setting up the support frame between two circuit breakers on the mounting panel, with this satisfy the rotation installation of interlocking board, but under some circumstances, do not have the space that sets up between two circuit breakers, or have the space that sets up but unable fixed support frame, just so also can't install interlocking board, can't realize the mechanical interlocking between two circuit breakers, consequently, the use of current interlocking device is restricted.
Disclosure of Invention
The invention aims to provide a mechanical interlocking device of a miniature circuit breaker, which aims to solve the problem that the use of the interlocking device is limited because an interlocking plate must be rotatably arranged between two circuit breakers in the conventional interlocking device.
In order to achieve the purpose, the mechanical interlocking device of the miniature circuit breaker adopts the following technical scheme:
a mechanical interlock device for a miniature circuit breaker, comprising:
mounting a plate;
the first circuit breaker is fixed on the mounting plate and is provided with a first handle for controlling the opening and closing of the first circuit breaker;
the second circuit breaker is fixed on the mounting plate and is provided with a second handle for controlling the opening and closing of the second circuit breaker;
the interlocking plate is rotatably arranged on the mounting plate and used for realizing mechanical interlocking between the first circuit breaker and the second circuit breaker;
the rotation axis of the interlocking plate is positioned beside the middle area of the first circuit breaker and the second circuit breaker;
two ends of the interlocking plate are respectively provided with a first extending part extending towards the first handle and a second extending part extending towards the second handle;
when the first breaker is switched on, the linkage plate is pushed by the first handle to rotate by the first extension part, so that the second extension part pushes the second handle to rotate to enable the second breaker to be switched off;
when the linkage plate is used, the linkage plate is also provided with a second working position, when the second breaker is switched on, the second extending part is pushed by the second handle to rotate reversely, so that the first extending part pushes the first handle to rotate reversely to open the first breaker;
when the linkage plate is used, the linkage plate is also provided with a third working position which enables the first extension part and the first handle and the second extension part and the second handle to keep intervals when the first circuit breaker and the second circuit breaker are in the opening state.
The beneficial effects of the above technical scheme are that: through the cooperation of the first extension part and the first handle at the two ends of the interlocking plate and the cooperation of the second extension part and the second handle, when the interlocking plate is located at the first working position and the second working position, the mechanical interlocking between the first circuit breaker and the second circuit breaker can be realized, and one circuit breaker forces another opening when closing. And meanwhile, the interlocking plate is also provided with a third working position, and at the moment, the two circuit breakers can be in a switching-off state, so that the safety is improved.
The rotation axis of the linkage plate is positioned at the side of the middle area of the first circuit breaker and the second circuit breaker, namely the linkage plate is hinged at the side of the middle area of the first circuit breaker and the second circuit breaker, but not between the two circuit breakers, and a setting space is not required to be arranged between the two circuit breakers, so that the arrangement of the linkage plate is more flexible, and the first extension part and the second extension part can be respectively matched with the first handle and the second handle through the structural size design of the first extension part and the second extension part, so that the interlocking device can be suitable for occasions which the setting space is not arranged between the two circuit breakers or the structure is inconvenient to fixedly install although the setting space is arranged.
Furthermore, in order to keep the service condition that two circuit breakers are located under the required condition, avoid the maloperation to appear, improve the security, install on the mounting panel and be used for locking the locking piece of interlock board after the interlock board rotates to target in place.
Furthermore, in order to facilitate the configuration of the locking piece, the structure setting is simplified, the locking piece comprises a locking bolt and a locking nut, the locking bolt penetrates through the mounting plate and the interlocking plate and is fixedly connected with the locking nut, so that the interlocking plate and the mounting plate are fixed together, and bolt through holes for the locking bolt to penetrate are respectively formed in the mounting plate and the interlocking plate.
Furthermore, in order to ensure the smooth rotation of the interlocking plate and facilitate the processing, the bolt through hole on the interlocking plate is a waist-shaped hole, two ends of the waist-shaped hole are used for being matched with the rod part of the locking bolt in a blocking manner so as to limit the rotation limit of the interlocking plate, and the width of the waist-shaped hole is larger than the outer diameter of the rod part of the locking bolt so as to prevent the rod part of the locking bolt from influencing the rotation of the interlocking plate.
Further, in order to simplify the structure setting, make things convenient for the installation of interlock board and the cooperation of both ends extension and handle, the mounting panel is dull and stereotyped, and the interlock board is installed on the mounting panel through the installation axle direct rotation, and the first extension and the second extension at interlock board both ends all have the section of bending to make first extension and second extension can cooperate with first handle and second handle respectively.
Furthermore, in order to simplify the structure and facilitate processing and manufacturing, the first extension part and the second extension part are both in a Z shape, the first extension part or the second extension part comprises a joint section for jointing with the mounting plate, a transition section vertically connected with the joint section, and a stop section vertically connected with the transition section and used for stopping and matching with the first handle or the second handle, the bending section is composed of the transition section and the stop section, and the bending section is in an L shape.
Furthermore, in order to make full use of two sides of the mounting plate, the integral structure is compact, the handle and the extension part are convenient to match, the interlocking plate is rotatably mounted on one side face of the mounting plate, the first circuit breaker and the second circuit breaker are fixed on the other opposite side face of the mounting plate, the first circuit breaker comprises a first convex part provided with the first handle, the second circuit breaker comprises a second convex part provided with the second handle, and the mounting plate is provided with a convex part through hole for the first convex part and the second convex part to penetrate through, so that the first handle and the second handle can be matched with the first extension part and the second extension part respectively.
Further, in order to simplify the structure and facilitate adjustment of the installation distance between the two circuit breakers, only one protrusion through hole is formed and is a rectangular long hole.
Furthermore, in order to facilitate the configuration and installation of the installation shaft and the smooth rotation of the interlocking plate, the installation shaft comprises an installation bolt and an installation nut, the installation bolt penetrates through the installation plate and the interlocking plate to be fixedly connected with the installation nut, a rod part of the installation bolt is provided with a ring platform, and the ring platform is used for being matched with the installation nut in a blocking manner, so that the distance from the head part of the installation bolt to the installation nut is greater than the sum of the thicknesses of the installation plate and the interlocking plate.
Furthermore, for convenient use, the two ends of the interlocking plate are symmetrical, so that the processing and manufacturing are convenient, and the mounting shaft is positioned in the center of the interlocking plate.
Drawings
Fig. 1 is a structural view of a mechanical interlocking device of a miniature circuit breaker according to the present invention;
FIG. 2 is a block diagram of the interlock plate of FIG. 1;
FIG. 3 is a block diagram of the mounting shaft of FIG. 1;
fig. 4 is a block diagram of the first locking member of fig. 1.
In the figure: 1-mounting a plate; 11-piercing of the projections; 2-interlocking plates; 21-a plate body; 22-a first lamination section; 23-a first transition section; 24-a first stop section; 25-a second fit segment; 26-a second transition section; 27-a second stop section; 28-locking bolt penetration; 29-mounting bolt through holes; 3, mounting a shaft; 31-mounting bolts; 32-ring table; 33-mounting a nut; 4-a first locking member; 41-locking bolt; 42-a locking nut; 5-a second locking element; 6-a first circuit breaker; 61-a first handle; 62-a first projection; 7-a second circuit breaker; 71-a second handle; 72-second projection.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
One embodiment of the mechanical interlocking device for the miniature circuit breaker in the invention is shown in fig. 1 and comprises a mounting plate 1, an interlocking plate 2, a first circuit breaker 6 and a second circuit breaker 7, wherein the first circuit breaker 6 is fixed on the mounting plate 1, and the first circuit breaker 6 is provided with a first handle 61 for controlling the opening and closing of the first circuit breaker. The second breaker 7 is also fixed to the mounting plate 1, and the second breaker 7 has a second handle 71 for controlling opening and closing of the second breaker. The interlock plate 2 is rotatably mounted on the mounting plate 1 for effecting mechanical interlocking between the first circuit breaker 6 and the second circuit breaker 7.
Specifically, mounting panel 1 is the flat board, and interlock board 2 directly rotates through installation axle 3 and installs on one of them side of mounting panel 1, and first circuit breaker 6 and second circuit breaker 7 are fixed on another the side of carrying on the back of the body of mounting panel 1. The first breaker 6 comprises a first convex part 62 provided with a first handle 61, the second breaker 7 comprises a second convex part 72 provided with a second handle 71, a convex part through hole 11 for the first convex part 62 and the second convex part 72 to pass through is arranged on the mounting plate 1, and only one convex part through hole 11 is a rectangular long hole.
The interlocking plate 2 has a substantially U-shaped structure, and as shown in fig. 2, the interlocking plate 2 is integrally formed by a plate, and includes a plate body 21, and a first extending portion and a second extending portion, which are respectively disposed at two ends of the plate body 21 and extend toward the first handle 61 and the second handle 71. The plate body 21 is attached to the mounting plate 1, and the two extending portions are symmetrically arranged relative to the center of the plate body 21. The first extending portion and the second extending portion are both in a Z-shape, and the first extending portion comprises a first attaching section 22 for attaching to the mounting plate 1, a first transition section 23 vertically connected to the first attaching section 22, and a first stopping section 24 vertically connected to the first transition section 23 and adapted to stop and cooperate with the first handle 61. Similarly, the second extension portion also includes a second attaching portion 25 for attaching to the mounting plate 1, a second transition portion 26 vertically connected to the second attaching portion 25, and a second stopping portion 27 vertically connected to the second transition portion 26 and adapted to stop and cooperate with the second handle 71.
The first transition section 23 and the first stopping section 24 form a bending section on the first extension portion, the second transition section 26 and the second stopping section 27 form a bending section on the second extension portion, and both the two bending sections are L-shaped, so that the first extension portion and the second extension portion can be respectively matched with the first handle 61 and the second handle 71.
The mounting shaft 3 is located at the center of the interlocking plate, as shown in fig. 3, the mounting shaft 3 includes a mounting bolt 31 and a mounting nut 33, the mounting bolt 31 passes through the mounting plate 1 and the interlocking plate 2 to be fixedly connected with the mounting nut 33, and the plate body 21 of the interlocking plate is provided with a mounting bolt through hole 29 (shown in fig. 2). The rod part of the mounting bolt 31 is provided with a ring table 32, and the ring table 32 is used for being matched with a mounting nut 33 in a stopping way, so that the distance from the head part of the mounting bolt 31 to the mounting nut 33 is greater than the sum of the thicknesses of the mounting plate 1 and the interlocking plate 2, and the interlocking plate can rotate smoothly.
In the present invention, the rotation axis of the interlock plate 2 is located at the side of the middle region of the first breaker 6 and the second breaker 7, that is, the mounting shaft 3 is located at the side of the middle region of the first breaker 6 and the second breaker 7, and the middle region of the first breaker 6 and the second breaker 7 is the projection through hole 11.
When the linkage plate 2 is used, when the first breaker 6 is switched on, the first stopping section 24 is pushed by the first handle 61 to rotate, so that the second stopping section 27 pushes the second handle 71 to rotate, and the second breaker 7 is switched off at a first working position; when the interlocking plate 2 is used, when the second circuit breaker 7 is switched on, the second stopping section 27 is pushed by the second handle 71 to rotate reversely, so that the first stopping section 24 pushes the first handle 61 to rotate reversely to enable the first circuit breaker 6 to be switched off; the interlock plate 2 further has a third operating position (i.e., a third operating position in fig. 1) that enables the first stopper 24 and the first handle 61, and the second stopper 27 and the second handle 71 to maintain a gap therebetween when the first circuit breaker 6 and the second circuit breaker 7 are both in the open state.
The mounting plate 1 is further provided with a locking piece for locking the interlocking plate 2 after the interlocking plate 2 rotates in place, the locking piece in the embodiment comprises a first locking piece 4 and a second locking piece 5, the two locking pieces have the same structure, taking the first locking piece 4 as an example, as shown in fig. 4, the locking piece comprises a locking bolt 41 and a locking nut 42, the locking bolt 41 penetrates through the mounting plate 1 and the interlocking plate 2 to be fixedly connected with the locking nut 42, so that the interlocking plate 2 and the mounting plate 1 are fixed together, and the mounting plate 1 and the interlocking plate 2 are respectively provided with a locking bolt through hole for the locking bolt 41 to penetrate through.
Specifically, the locking bolt through hole on the mounting plate 1 is a circular hole, as shown in fig. 2, the locking bolt through hole 28 on the interlocking plate 2 is a kidney-shaped hole, two ends of the kidney-shaped hole are used for being in stop fit with the rod portion of the locking bolt to limit the rotation limit of the interlocking plate 2, and the width of the kidney-shaped hole is greater than the outer diameter of the rod portion of the locking bolt to prevent the rod portion of the locking bolt from affecting the rotation of the interlocking plate 2. The waist-shaped hole is used as a locking bolt through hole, so that the processing is convenient.
According to the mechanical interlocking device for the miniature circuit breaker, the interlocking plate is hinged to the side of the middle area of the first circuit breaker and the second circuit breaker, but not between the two circuit breakers, so that the arrangement of the interlocking plate is more flexible, the first extending part and the second extending part can be respectively matched with the first handle and the second handle through the structural size design of the first extending part and the second extending part, and for example, when the interlocking plate can only be arranged far, the size of the extending part can be lengthened to ensure that the extending part can be matched with the handles.
The interlocking device does not need to have a setting space between the two circuit breakers, and can be suitable for occasions without setting space between the two circuit breakers, such as the two circuit breakers are arranged closely, and for example, a hole structure is arranged between the two circuit breakers, so that the interlocking device does not have an entity, cannot fix a mounting structure (shown in figure 1), and is inconvenient to fix the mounting structure although the setting space is arranged between the two circuit breakers.
In addition, the interlocking device that above-mentioned embodiment provided can be horizontal when practical application, and the mounting panel also can erect and put, and the interval between two circuit breakers can finely tune under the unchangeable circumstances of interlocking board, and it is more convenient to install, and when the interval change between two circuit breakers is great, only need change a longer or shorter interlocking board can. The interlocking device has the advantages that the integral structure is simple and compact, the control is accurate, the mechanical interlocking between the two circuit breakers can be realized, the misoperation can be avoided through the locking piece, and the safety and the reliability of the high-voltage circuit breaker or other power utilization systems are effectively improved.
In other embodiments of the mechanical interlocking device for the miniature circuit breaker, the mounting shaft may also be formed by a pin, and the end of the pin may be provided with a circlip or a split pin.
In other embodiments of the mechanical interlocking device for the miniature circuit breaker, the installation shaft can also deviate from the center of the interlocking plate, and at the moment, in order to ensure the interlocking effect, the lengths of the extending parts at the two ends of the interlocking plate need to be long and short.
In other embodiments of the mechanical interlock device for miniature circuit breakers, there may be two tab apertures, one for each circuit breaker.
In other embodiments of the mechanical interlocking device for miniature circuit breakers, the interlocking plate and the two circuit breakers can be mounted on the same side of the mounting plate, where the transition section of the extension portion needs to be longer to enable the stop section to cooperate with the handle.
In other embodiments of the mechanical interlocking device for a miniature circuit breaker, the shape of the first extending portion and the second extending portion may not be a Z shape, for example, there may be a plurality of bending sections, and after bending for a plurality of times, the final stopping section is used to match with the handle stop.
In other embodiments of the mechanical interlocking device for the miniature circuit breaker, when the mounting plate is a flat plate, a support frame can be fixed on the mounting plate firstly, then the interlocking plate is rotatably installed on the support frame, and the interlocking plate is integrally flat through the proper height of the support frame, namely the extending part is also flat and does not have a bending section.
In other embodiments of the mechanical interlocking device for the miniature circuit breaker, the mounting plate may not be a flat plate, a boss is arranged on the mounting plate, the interlocking plate can be rotatably mounted on the boss, and the interlocking plate can be integrally flat through the proper height of the boss.
In other embodiments of the mechanical interlocking device for the miniature circuit breaker, the bolt through hole on the interlocking plate can also be an arc-shaped hole with the rotation center of the interlocking plate being circular.
In other embodiments of the mechanical interlock device for a miniature circuit breaker, the locking member may be a pressing plate fixed to the mounting plate by a bolt, and when the interlock plate is rotated in place, the pressing plate presses the interlock plate.
In other embodiments of the mechanical interlock for miniature circuit breakers, the mounting plate may not have a locking member thereon.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all equivalent structural changes made by using the contents of the specification and the drawings of the present invention should be covered by the scope of the present invention.
Claims (9)
1. A mechanical interlock device for a miniature circuit breaker, comprising:
mounting a plate;
the first circuit breaker is fixed on the mounting plate and is provided with a first handle for controlling the opening and closing of the first circuit breaker;
the second circuit breaker is fixed on the mounting plate and is provided with a second handle for controlling the opening and closing of the second circuit breaker;
the interlocking plate is rotatably arranged on the mounting plate and used for realizing mechanical interlocking between the first circuit breaker and the second circuit breaker;
the method is characterized in that: the rotation axis of the interlocking plate is positioned beside the middle area of the first circuit breaker and the second circuit breaker, so that the rotation axis of the interlocking plate is positioned outside the middle area of the first circuit breaker and the second circuit breaker;
a first extending part extending towards the first handle and a second extending part extending towards the second handle are respectively arranged at two ends of the interlocking plate;
when the first breaker is switched on, the linkage plate is pushed by the first handle to rotate by the first extension part, so that the second extension part pushes the second handle to rotate to enable the second breaker to be switched off;
when the linkage plate is used, the linkage plate is also provided with a second working position, when the second breaker is switched on, the second extending part is pushed by the second handle to rotate reversely, so that the first extending part pushes the first handle to rotate reversely to open the first breaker;
the linkage plate is also provided with a third working position which can keep intervals between the first extension part and the first handle and between the second extension part and the second handle when the first breaker and the second breaker are in the opening state in the use process;
the mounting plate is provided with a locking piece for locking the interlocking plate after the interlocking plate rotates in place.
2. A mechanical interlock device for a miniature circuit breaker according to claim 1, further comprising: the locking piece includes locking bolt and lock nut, and locking bolt passes mounting panel and interlock board and lock nut fixed connection to be in the same place interlock board and mounting panel are fixed, be provided with the bolt perforation that supplies locking bolt to pass on mounting panel and the interlock board respectively.
3. A mechanical interlock device for a miniature circuit breaker according to claim 2, further comprising: the bolt through hole on the interlocking plate is a waist-shaped hole, two ends of the waist-shaped hole are used for being matched with the rod part of the locking bolt in a stop mode so as to limit the rotation limit of the interlocking plate, and the width of the waist-shaped hole is larger than the outer diameter of the rod part of the locking bolt so as to prevent the rod part of the locking bolt from influencing the rotation of the interlocking plate.
4. The mechanical interlocking device of a miniature circuit breaker according to any one of claims 1 to 3, characterized in that: the mounting panel is dull and stereotyped, and the interlocking board is installed on the mounting panel through the installation axle direct rotation, and the first extension and the second extension at interlocking board both ends all have the section of bending to make first extension and second extension can cooperate with first handle and second handle respectively.
5. A mechanical interlock device for a miniature circuit breaker according to claim 4, further comprising: the first extension part and the second extension part are Z-shaped, the first extension part or the second extension part comprises a bonding section for bonding with the mounting plate, a transition section vertically connected with the bonding section, and a blocking section vertically connected with the transition section and used for blocking and matching with the first handle or the second handle, the bending section is composed of the transition section and the blocking section, and the bending section is L-shaped.
6. A mechanical interlock device for a miniature circuit breaker according to claim 4, further comprising: the interlocking plate is rotatably installed on one side face of the installation plate, the first circuit breaker and the second circuit breaker are fixed on the other opposite side face of the installation plate, the first circuit breaker comprises a first convex portion provided with a first handle, the second circuit breaker comprises a second convex portion provided with a second handle, and a convex portion through hole for the first convex portion and the second convex portion to penetrate is formed in the installation plate, so that the first handle and the second handle can be matched with the first extension portion and the second extension portion respectively.
7. A mechanical interlock device for a miniature circuit breaker according to claim 6, further comprising: the convex part through hole is only one and is a rectangular long hole.
8. A mechanical interlock device for a miniature circuit breaker according to claim 4, further comprising: the mounting shaft comprises a mounting bolt and a mounting nut, the mounting bolt penetrates through the mounting plate and the interlocking plate to be fixedly connected with the mounting nut, a ring table is arranged on the rod portion of the mounting bolt and used for being matched with the mounting nut in a blocking mode, and therefore the distance from the head of the mounting bolt to the mounting nut is larger than the sum of the thicknesses of the mounting plate and the interlocking plate.
9. The mechanical interlock apparatus of a miniature circuit breaker according to claim 4, wherein: the mounting shaft is located in the center of the linkage plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011103866.7A CN112735876B (en) | 2020-10-15 | 2020-10-15 | Mechanical interlocking device of miniature circuit breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011103866.7A CN112735876B (en) | 2020-10-15 | 2020-10-15 | Mechanical interlocking device of miniature circuit breaker |
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| CN112735876A CN112735876A (en) | 2021-04-30 |
| CN112735876B true CN112735876B (en) | 2023-03-31 |
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