A three position electrical indicating device for a draw-out circuit breaker
Patent Information
- Application Number
- CN202522335940.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-04
AI Technical Summary
[0008]1）该三位置指示装置通过传动机构间接反映本体在抽架中的三个位置，不够准确；
[0022]该抽屉式断路器三位置电气指示装置通过安装在抽架侧板上的微动开关组件和安装在断路器本体上的触发组件配合，由触发杆择一触发分离位微动开关、试验位微动开关或连接位微动开关，从而直接反映断路器本体的位置，指示位置准确，加装方便，且由于微动开关组件安装在抽架侧板上，不会与断路器本体摇入摇出动作发生干扰，布线更加简单。
Smart Images
Figure CN224842912U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a three-position electrical indicator device for a drawer-type circuit breaker. Background Technology
[0002] A drawer-type circuit breaker is a low-voltage power distribution device that generally includes a fixed drawer (drawer base) and a movable circuit breaker body. It typically has three working positions: "connected", "test", and "disconnected". An arc-extinguishing chamber is located on the top of the circuit breaker body, and a cover is installed above the corresponding drawer to achieve a zero-arc effect and ensure safe and reliable use in electrical assembly.
[0003] To meet the needs of intelligent power distribution systems, electrical indicating devices providing three-position signals for circuit breakers are provided in intelligent networks. Existing three-position indicating devices for circuit breakers are generally designed on the base plate of the drawer unit, connected to specific terminals of the secondary circuit via wires. A microswitch trigger rod is then installed on the transmission mechanism, initially in the connected position. Using the handle, the latch is inserted, and after pressing the interlock to unlock, the handle is turned counterclockwise from the connected position to the disconnected position. This allows the drawer unit guide plate to be pulled out, the circuit breaker body to be inserted, and the circuit breaker body to be pushed into the drawer unit guide plate.
[0004] The structure of the existing three-position indicating device for circuit breakers is as follows: Figure 1 As shown, the following operations are required when performing communication testing on the three-position indicator of the circuit breaker:
[0005] Initiation Process: When in the disengaged position, the microswitch trigger lever mounted on the transmission mechanism presses down on the disengaged microswitch 1'. Use a multimeter to contact the terminals of the secondary circuit common wire 7' and the disengaged wire 5' respectively. The multimeter will beep. Press the interlock to unlock, and crank the handle clockwise. The transmission mechanism moves from the disengaged position to the test position. When in the test position, the microswitch trigger lever presses down on the test position microswitch 2'. Use a multimeter to contact the terminals of the secondary circuit common wire 7' and the test wire 6' respectively. The multimeter will beep. Press the interlock to unlock, and crank the handle clockwise. The transmission mechanism moves from the test position to the connected position. When in the connected position, the microswitch trigger lever presses down on the connected position microswitch 3'. Use a multimeter to contact the terminals of the secondary circuit common wire 7' and the connected wire 4' respectively. The multimeter will beep.
[0006] Release process: When in the connected position, press the micro switch trigger lever to press the connected position micro switch 3'. Use a multimeter to contact the terminal of the secondary circuit common wire 7' and the terminal of the connected position wire 4' respectively. The multimeter will beep. Press the interlock to unlock, and crank the handle counterclockwise. The transmission mechanism moves from the connected position to the test position. When in the test position, press the micro switch trigger lever to press the test position micro switch 2'. Use a multimeter to contact the terminal of the secondary circuit common wire 7' and the terminal of the test position wire 6' respectively. The multimeter will beep. Press the interlock to unlock, and crank the handle counterclockwise. The transmission mechanism moves from the test position to the disconnected position. When in the disconnected position, press the micro switch trigger lever to press the disconnected position micro switch 1'. Use a multimeter to contact the terminal of the secondary circuit common wire 7' and the terminal of the disconnected position wire 5' respectively. The multimeter will beep.
[0007] The above working method has the following shortcomings:
[0008] 1) This three-position indicator indirectly reflects the three positions of the body in the drawer through the transmission mechanism, which is not accurate enough;
[0009] 2) When assembling this three-position electrical indicator device, it is necessary to first separate it from the circuit breaker body, then adjust the position of the transmission mechanism to assemble the micro switch trigger rod, and then install it. The assembly is difficult and cumbersome.
[0010] 3) The three-position electrical indicator is installed on the base plate of the drawer. Its wiring needs to pass through the base plate and side plate of the drawer. Special attention should be paid to ensure that the wiring on the base plate does not interfere with the circuit breaker body, which makes the wiring difficult. Utility Model Content
[0011] The purpose of this utility model is to provide a three-position electrical indicator device for a drawer-type circuit breaker, which can conveniently and efficiently reflect the position of the circuit breaker body in the drawer.
[0012] To achieve this objective, the present invention adopts the following technical solution:
[0013] A three-position electrical indicating device for a drawer-type circuit breaker includes a micro switch assembly and a trigger assembly, wherein:
[0014] The micro switch assembly includes a base mounted on the side plate of the drawer. The base is provided with a travel groove that is consistent with the swing-in and swing-out direction of the circuit breaker body. The travel groove is provided with a micro switch for the separation position, a micro switch for the test position, and a micro switch for the connection position of the circuit breaker body, respectively. A wire harness is led out from the base, and the end of the wire harness is provided with an integrated terminal that connects to the secondary circuit of the drawer.
[0015] The triggering component includes a trigger plate mounted on the circuit breaker body. The trigger plate is equipped with a trigger rod. During the process of the circuit breaker body being rocked in and out, the trigger rod can move along the travel groove and selectively contact the micro switch at the separation position, the micro switch at the test position, or the micro switch at the connection position to output a signal indicating the location of the circuit breaker body.
[0016] As an alternative, the docking port of the secondary circuit of the drawer is located on the top plate of the drawer, and the wire harness is laid along the surface of the side plate and the top plate of the drawer.
[0017] As an optional solution, a reset spring is provided in the base at the fixed positions of the micro switch in the separation position, the micro switch in the test position, and the micro switch in the connection position, so as to improve the trigger sensitivity of the trigger rod.
[0018] As an alternative, the disconnect position micro switch, the test position micro switch, and the connection position micro switch are arranged sequentially along the swing-in direction of the circuit breaker body.
[0019] As an optional solution, the wire harness includes a separation position wire, a test position wire, a connection position wire, and a common wire. The separation position wire and the common wire form a separation position signal loop, the test position wire and the common wire form a test position signal loop, and the connection position wire and the common wire form a connection position signal loop.
[0020] As an alternative, a movable guide plate for placing the circuit breaker body is provided on the side plate of the drawer and below the base. A transmission mechanism is provided on the bottom plate of the drawer to drive the movable guide plate, so that the circuit breaker body can switch between the disconnected position, the test position and the connected position.
[0021] The beneficial effects of this utility model are:
[0022] This three-position electrical indicator for the drawer-type circuit breaker works in conjunction with a microswitch assembly mounted on the side plate of the drawer and a trigger assembly mounted on the circuit breaker body. The trigger rod can select one of the microswitches to trigger: the separation position microswitch, the test position microswitch, or the connection position microswitch, thus directly reflecting the position of the circuit breaker body. The position indication is accurate and easy to install. Furthermore, since the microswitch assembly is mounted on the side plate of the drawer, it will not interfere with the swing-in or swing-out movement of the circuit breaker body, making wiring simpler. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of an existing three-position indicator device for circuit breakers;
[0024] Figure 2 This is a schematic diagram of the micro switch assembly in the three-position electrical indicator device for a drawer-type circuit breaker provided in this embodiment of the utility model;
[0025] Figure 3 This is a schematic diagram of the triggering component in the three-position electrical indication device of the drawer-type circuit breaker provided in this embodiment of the utility model;
[0026] Figure 4 This is a schematic diagram illustrating the cooperation between the micro switch assembly and the trigger assembly according to an embodiment of this utility model;
[0027] Figure 5 This is a schematic diagram of the micro switch assembly according to an embodiment of the present invention mounted on a drawer;
[0028] Figure 6 This is a schematic diagram of the triggering component installed on the circuit breaker body according to an embodiment of the present utility model;
[0029] Figure 7 This is a schematic diagram of the transmission mechanism on the drawer base plate according to an embodiment of the present utility model.
[0030] In the attached image:
[0031] 1' Separation position micro switch; 2' Test position micro switch; 3' Connection position micro switch; 4' Connection position wire; 5' Separation position wire; 6' Test position wire; 7' Common wire;
[0032] 100. Micro switch assembly; 101. Base; 102. Travel groove; 103. Separate position micro switch; 104. Test position micro switch; 105. Connecting position micro switch; 106. Integrated terminal; 107. Return spring; 108. Separate position wire; 109. Test position wire; 110. Connecting position wire; 111. Common wire;
[0033] 200. Trigger component; 201. Trigger plate; 202. Trigger lever;
[0034] 300. Drawer side panel;
[0035] 400. Drawer top plate;
[0036] 500, secondary circuit of the rack;
[0037] 600. Transmission mechanism; 601. Faucet shaft; 602. Lock; 603. Handle; 604. Interlocking component;
[0038] 700. Drawer base plate;
[0039] 800. Circuit breaker body. Detailed Implementation
[0040] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0042] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0043] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0044] like Figures 2 to 7 As shown, this embodiment provides a three-position electrical indicating device for a drawer-type circuit breaker, including a micro switch assembly 100 and a trigger assembly 200, wherein:
[0045] The micro switch assembly 100 includes a base 101 mounted on the side plate 300 of the drawer. The base 101 is provided with a travel groove 102 that is consistent with the swing-in and swing-out direction of the circuit breaker body 800. The travel groove 102 is provided with a separation position micro switch 103, a test position micro switch 104, and a connection position micro switch 105 respectively corresponding to the separation position, test position, and connection position of the circuit breaker body 800. A wire harness is led out from the base 101, and the end of the wire harness is provided with an integrated terminal 106 that is connected to the secondary circuit 500 of the drawer.
[0046] The triggering assembly 200 includes a trigger plate 201 installed on the circuit breaker body 800. The trigger plate 201 is provided with a trigger rod 202. During the process of the circuit breaker body 800 being rocked in and out, the trigger rod 202 can move along the travel groove 102 and selectively contact the separation position micro switch 103, the test position micro switch 104, or the connection position micro switch 105 to output the position signal of the circuit breaker body 800.
[0047] Therefore, by cooperating with the micro switch assembly 100 installed on the drawer side plate 300 and the trigger assembly 200 installed on the circuit breaker body 800, the trigger rod 202 can selectively trigger the separation position micro switch 103, the test position micro switch 104, or the connection position micro switch 105, thereby directly reflecting the position of the circuit breaker body 800. The position indication is accurate and the installation is convenient. Furthermore, since the micro switch assembly 100 is installed on the drawer side plate 300, it will not interfere with the swing-in and swing-out operation of the circuit breaker body 800, and the wiring is simpler.
[0048] Optionally, the docking port of the secondary circuit 500 of the drawer is located on the top plate 400 of the drawer, and the wire harness is laid along the surface of the side plate 300 and the top plate 400 of the drawer.
[0049] The length of the wire harness should be set reasonably according to the spatial layout. Figure 5 The dashed line in the middle indicates the wiring route of the wire harness. Since the micro switch assembly 100 is installed on the side plate 300 of the drawer, the wiring route of the wire harness is more convenient and simpler than the structure installed on the bottom plate 700 of the drawer, and there is no need to worry about interference with the circuit breaker body 800 and the transmission mechanism 600 at the bottom.
[0050] Optionally, a return spring 107 is provided in the base 101 at the fixed positions of the micro switch 103 in the separation position, the micro switch 104 in the test position, and the micro switch 105 in the connection position, as detailed in [link to details]. Figure 2 .
[0051] As a result, the trigger lever 202 and the corresponding micro switch are triggered more quickly and react more promptly. When the trigger lever 202 just touches or leaves the corresponding micro switch, the corresponding position signal is immediately issued or stopped, ensuring that the feedback indication position is accurate and reliable.
[0052] Optionally, the micro switch 103 for the separation position, the micro switch 104 for the test position, and the micro switch 105 for the connection position are arranged sequentially along the rocking direction of the circuit breaker body 800. That is, during the process of pushing the circuit breaker body 800 into the pull-out bracket, they move sequentially from the separation position to the test position and then to the connection position without any extra travel and without affecting the original operation.
[0053] Optionally, the wire harness includes a separation position wire 108, a test position wire 109, a connection position wire 110, and a common wire 111. The separation position wire 108 and the common wire 111 form a separation position signal loop, the test position wire 109 and the common wire 111 form a test position signal loop, and the connection position wire 110 and the common wire 111 form a connection position signal loop.
[0054] Communication testing process: During the rocking-in process, slowly push the circuit breaker body 800 to the disconnect position, and use a multimeter to contact the terminals of the common conductor 111 respectively. Figure 2 The terminal of the CMN part and the separation wire 108 ( Figure 2 At the DCN location, the multimeter beeps; upon reaching the test position, use the multimeter to contact the terminals of the common wire 111 respectively ( Figure 2 The terminal of the test conductor 109 (at the CMN position) is connected to the terminal of the test conductor 109. Figure 2 At the TST position, the multimeter will beep; upon reaching the connection position, use the multimeter to contact the terminals of the common wire 111 respectively ( Figure 2 (at CMN) and the connection terminal ( Figure 2 (At point CN), the multimeter beeps. During the shaking process, perform the reverse operation.
[0055] Optionally, a movable guide plate for placing the circuit breaker body 800 is provided on the side plate 300 of the drawer and below the base 101. A transmission mechanism 600 is provided on the bottom plate 700 of the drawer. The transmission mechanism 600 is used to drive the movable guide plate so that the circuit breaker body 800 can switch between a disconnected position, a test position and a connected position.
[0056] Among them, the transmission mechanism 600, for example Figure 7 As shown, no specific protection is required. For details on the structure and principle, please refer to existing technologies. Only a brief explanation is provided here.
[0057] The transmission mechanism 600 includes a faucet shaft 601 rotatably mounted on the drawer base plate 700 and a latch 602 that drives the faucet shaft 601 to rotate. The faucet shaft 601 is used to drive the moving guide plate to move back and forth. The latch 602 is driven by a special handle 603. After the handle 603 is pulled out, it can be inserted into the latch 602 and folded into a Z-shape to form a rocker arm. Rotating the handle 603 drives the faucet shaft 601 to rotate, thereby driving the moving guide plate and the circuit breaker body 800 to make a rocking-in and rocking-out movement.
[0058] In addition, the base plate 700 of the drawer is equipped with an interlocking component 604 for locking the faucet shaft 601. Only when the interlocking component 604 is pressed down can the faucet shaft 601 be driven through the latch 602. This is mainly used to ensure the stability of the circuit breaker body 800 when it is in a certain position and to prevent it from shifting arbitrarily.
[0059] In summary, the above-mentioned drawer-type circuit breaker three-position electrical indicating device has the following advantages compared with existing circuit breaker three-position indicating devices:
[0060] 1) It can directly reflect the position of the circuit breaker body 800. The trigger component 200 installed on the circuit breaker body 800 can directly reflect the three positions in the drawer, making the position feedback more accurate.
[0061] 2) To assemble the three-position electrical indicator device of this drawer-type circuit breaker, simply install the trigger system on the circuit breaker body 800 and the micro switch assembly 100 on the drawer side plate 300. Both are connected by screws, making installation simple and convenient.
[0062] 3) The micro switch assembly 100 is mounted on the drawer side plate 300, and its wire harness only needs to be routed through the drawer side plate 300, which simplifies the wiring process.
[0063] 4) Reset springs 107 have been added to the three fixed positions of the micro switches that reflect the position of the circuit breaker body 800, so that the position signal is immediately issued or stopped as soon as the trigger rod 202 contacts or leaves the micro switch, making the triggering faster and the response more timely.
[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A three-position electrical indicating device for a drawer-type circuit breaker, characterized in that, It includes a micro switch assembly (100) and a trigger assembly (200), wherein: The micro switch assembly (100) includes a base (101) mounted on the side plate (300) of the drawer. The base (101) is provided with a travel groove (102) that is consistent with the swing-in and swing-out direction of the circuit breaker body (800). The travel groove (102) is provided with a separation position micro switch (103), a test position micro switch (104), and a connection position micro switch (105) respectively corresponding to the separation position, test position, and connection position of the circuit breaker body (800). A wire harness is led out from the base (101). The end of the wire harness is provided with an integrated terminal (106) that is connected to the secondary circuit (500) of the drawer. The triggering component (200) includes a trigger plate (201) installed on the circuit breaker body (800). A trigger rod (202) is provided on the trigger plate (201). During the process of the circuit breaker body (800) being rocked in and out, the trigger rod (202) can move along the travel groove (102) and selectively contact the separation position micro switch (103), the test position micro switch (104), or the connection position micro switch (105) to output the position signal of the circuit breaker body (800).
2. The three-position electrical indicating device for a drawer-type circuit breaker according to claim 1, characterized in that, The docking port of the secondary circuit (500) of the drawer is located on the top plate (400) of the drawer, and the wire harness is laid along the surface of the side plate (300) and the top plate (400) of the drawer.
3. The three-position electrical indicating device for a drawer-type circuit breaker according to claim 1, characterized in that, The base (101) is provided with reset springs (107) at the fixed positions of the separation position micro switch (103), the test position micro switch (104), and the connection position micro switch (105) to improve the trigger sensitivity of the trigger rod (202).
4. The three-position electrical indicating device for a drawer-type circuit breaker according to claim 1, characterized in that, The separation position micro switch (103), the test position micro switch (104), and the connection position micro switch (105) are arranged sequentially along the swing-in direction of the circuit breaker body (800).
5. The three-position electrical indicating device for a drawer-type circuit breaker according to claim 1, characterized in that, The wire harness includes a separation position wire (108), a test position wire (109), a connection position wire (110), and a common wire (111). The separation position wire (108) and the common wire (111) form a separation position signal loop, the test position wire (109) and the common wire (111) form a test position signal loop, and the connection position wire (110) and the common wire (111) form a connection position signal loop.
6. The three-position electrical indicating device for a drawer-type circuit breaker according to claim 1, characterized in that, A movable guide plate for placing the circuit breaker body (800) is provided on the side plate (300) of the drawer and below the base (101). A transmission mechanism (600) is provided on the bottom plate (700) of the drawer. The transmission mechanism (600) is used to drive the movable guide plate so that the circuit breaker body (800) switches between the separated position, the test position and the connected position.