Plug-and-play pluggable controller and locked circuit breaker

Abstract

The present invention provides a plug-and-play pluggable controller and a circuit breaker with a lock, belonging to the field of circuit breakers. The pluggable controller includes an upper cover, a lower cover, an electronic circuit board and a plug head. A slide rail is arranged on the bottom surface of the lower cover along the plugging direction of the plug head, and there is a through gap staggered with the slide rail between one end of the slide rail and the outer side edge of the lower cover. The circuit breaker includes a circuit breaker body base, a controller bracket, a face mask and a pluggable controller. The controller bracket is fixed on the circuit breaker body base, and a chute and a limit locking structure are arranged on the controller bracket. By setting a limit locking mechanism on the controller bracket and a through gap for cooperating to achieve limit on the slide rail of the pluggable controller, the pluggable controller is locked on the controller bracket in a limited way with the smallest structural modification method and a smaller volume, realizing the locking between the pluggable controller and the circuit breaker body in a true sense, and effectively improving the use safety performance of the circuit breaker.

Description

Technical Field

[0001] The present invention relates to the field of circuit breakers, and particularly to a plug-and-play pluggable controller and a locked circuit breaker with the plug-and-play controller. Background Art

[0002] Low-voltage circuit breakers are important electrical appliances that play the role of on-off control and protection in low-voltage power distribution systems. The air circuit breakers currently in large use are mainly protected by electronic intelligent controllers (hereinafter referred to as controllers). With the improvement of new materials and processes, the service life of the body mechanism part of the air circuit breaker may exceed 10 years. However, as an electronic intelligent controller operating 24 hours a day, due to different usage environments and welding processes, its electronic components are prone to damage, and its service life is thus affected. Moreover, after long-term operation, the electronic intelligent controller is prone to aging and damage, and its life is shorter compared to the body mechanism of the circuit breaker. To ensure safe use and improve the reliability of the circuit breaker operation, it is generally required to replace the electronic intelligent controller every 3 to 5 years.

[0003] Chinese Patent No. CN201410141197.0 provides a circuit breaker with a controller that can be quickly plugged and unplugged and replaced, which includes a controller that can be pluggably replaced and installed on the circuit breaker, a face mask fixedly installed on the circuit breaker, and a changeover switch for turning on / off the working power supply of the controller. The circuit breaker further includes a special-shaped guide rail pair with a sliding block and a sliding groove structure for positioning the controller on the bracket of the circuit breaker body, which restricts the degrees of freedom of the controller to move or rotate in five directions other than the plugging and unplugging direction when installed on the bracket. The face mask has a window with a shape and size that do not hinder the insertion of the controller from the outside and the extraction from the inside; the controller is provided with an elastic locking mechanism for detachably locking the controller to the face mask.

[0004] In short, the above patent sets an elastic locking mechanism on the controller to lock the controller and the mask, and the controller can be locked or removed by rotating the locking piece. However, the patent has the following problems: First, the controller and the mask are both distributed with partial structures of the locking mechanism, which makes the structures of the controller and the mask complicated and inconvenient to process, and because the structures of the mask and the controller need to be changed at the same time, the cost is too high; Second, the elastic locking mechanism is set on the controller, which requires the subsequent replacement of the controller to also have a corresponding structure, which will be a major obstacle for the structural design of the controller for multiple generations of replacement in the next 3 years or even more than 5 years; Third, the existing locking mechanism has a complex structure and a large volume. For example, the elastic locking mechanism structure in the above patent is not convenient for processing and assembly. Fourth, the control end of the elastic locking mechanism of the above patent is exposed to the outside and is easy to be misoperated. Fifth, the controller is locked with the mask, which means that the controller can be removed by removing the mask or destroying the part of the mask with the locking structure. This locking method is easy to be destroyed and has low reliability.

[0005] This application is filed based on the various inconveniences or problems existing in existing pluggable controllers and circuit breakers. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a plug-and-play pluggable controller and a circuit breaker with a lock which are simple in structure and easy to install. A locking mechanism is provided on the body of the circuit breaker to lock the controller on the circuit breaker, thereby improving the locking reliability of the controller and avoiding the problems of complex structure and inconvenience in replacement design in the prior art of providing a locking mechanism on the controller.

[0007] To achieve the above-mentioned purpose, the present invention provides a plug-and-play pluggable controller, comprising an upper cover, a lower cover, an electronic circuit board and a plug-in head, wherein the electronic circuit board is located in a cavity formed by the upper cover and the lower cover, and a slide rail is arranged on the bottom surface of the lower cover along the pluggable direction of the plug-in head, so that one end of the slide rail faces the insertable direction and the other end faces the pull-out direction, and the characteristic is that there is a through gap interlaced with the slide rail from one end of the slide rail to the side edge of the bottom surface of the lower cover close to the pull-out direction. In addition, the present invention makes the electronic circuit board and the housing of the controller independent of each other, which is convenient for modular assembly and use, and helps to improve the versatility of the pluggable controller.

[0008] A pluggable controller of the present invention is further configured as follows: the through gap is located between the other end of the slide rail and the side edge of the bottom surface of the lower cover on the pull-out direction side, which not only maintains the smooth plug-in between the pluggable controller of the present invention and the circuit breaker body by maintaining the integrity of the slide rail structure, but also facilitates processing.

[0009] For the convenience of assembly, a pluggable controller of the present invention is further configured as follows: The plug head is disposed on the electronic circuit board, and at least an opening or a slot for the plug head to expose or penetrate is provided at a corresponding position of the lower cover. The above structure means that the plug head is integrated with the electronic circuit board, which not only simplifies the structure of the lower cover, but also facilitates the repair by directly replacing the electronic circuit board when the electronic circuit board fails or recycling the lower cover for reuse, thereby improving the utilization rate of parts.

[0010] For the convenience of plugging, a pluggable controller of the present invention is further configured as follows: The part of the lower cover where the plug head is located protrudes from the surface of the lower cover where it is located along the insertable direction, and the shape of the plug head / the shape of the connection seat between the plug head and the electronic circuit board / the shape of the part of the electronic circuit board for installing the plug head is adapted to the protruding part of the lower cover, and the plug head exposes or penetrates from the protruding end.

[0011] Moreover, through the above structure, the electronic circuit board can be fixedly installed on the lower cover without connectors by the cooperation of the plug head and the protruding part, which can improve the assembly efficiency and reduce the use of parts.

[0012] To further improve the independence of the modules in the pluggable controller of the present invention, a pluggable controller of the present invention is further configured as follows: A plurality of electrical mounting seats are provided on one side of the electronic circuit board opposite to the upper cover, and a liquid crystal display screen and / or a power switch are electrically assembled (electrically welded or electrically plugged) on the electrical mounting seats. An opening slot that does not prevent the liquid crystal display screen and / or the power switch from passing through is provided on the upper cover, and the height of the electrical mounting seat is adapted to the distance between the liquid crystal display screen and the power switch fixed on the electronic circuit board and the upper cover.

[0013] The above structure integrates electrical components such as the liquid crystal display screen and the power switch on the electronic circuit board. On the one hand, there is no need to connect the electronic circuit board with the upper cover by wires, which simplifies the structure of the upper cover and improves the assembly efficiency; on the other hand, in the present invention, all electrical components are arranged on the electronic circuit board, making the electronic circuit board an independent plug-in with a complete electrical structure, which is convenient for assembly and use. Furthermore, the above structure can realize the centralized management of electrical circuits on the electronic circuit board, which helps to improve the structural stability of the electrical circuits.

[0014] A pluggable controller of the present invention is further configured as follows: A holding groove for facilitating the holding to plug and unplug the controller is provided in the middle of the upper cover.

[0015] Another object of the present invention is to provide a circuit breaker with a lock, which includes a circuit breaker body base, a controller bracket, a face mask, and a pluggable controller. The face mask has an opening that does not prevent the insertion and removal of the controller. One side of the controller bracket is detachably and fixedly installed on the circuit breaker body base. One end of the pluggable controller is provided with a plug connector along the insertion direction, and its bottom surface is provided with a slide rail along the pluggable direction. The controller bracket is provided with a chute adapted to the slide rail of the pluggable controller and a limit locking structure for restricting the movement of the slide rail along the extraction direction. A plug-in member adapted to the plug connector is installed on the controller bracket, and the pluggable controller is plugged and cooperated with the plug-in member through the opening on the face mask.

[0016] The present invention provides a limit locking structure on the controller bracket to truly "lock" the inserted controller, which can effectively prevent the failure of the locking structure caused by removing the face mask, realize the interlock between the face mask and the pluggable controller structure, and improve the safety performance of the circuit breaker of the present invention.

[0017] Moreover, the present invention sets the limit locking structure on the controller bracket, and after assembly, the main body of the limit locking structure will be hidden inside the circuit breaker body instead of being directly exposed outside, thereby greatly reducing the possibility of misoperation, improving the safety of the "lock" itself, and further improving the safety level of the circuit breaker of the present invention.

[0018] Furthermore, in the limit locking structure of the present invention, only a through gap is provided at the pluggable controller to achieve the locking cooperation, which has no negative impact on the structure of the controller itself. The structure is simple, easy to transform, process, and popularize. The corresponding cooperation structure may not be set on the face mask, so that the face mask can adopt a more universal structure, which is convenient for production and reduces costs.

[0019] To facilitate the installation of the controller bracket and provide a more stable cooperation structure for the insertion of the pluggable controller, the above-mentioned circuit breaker with a lock is further provided with a controller base. The controller base is detachably and fixedly installed on the circuit breaker body base, and the controller bracket is detachably and fixedly installed on the controller base.

[0020] The above-mentioned circuit breaker with a lock is further provided as follows: a groove for accommodating the controller is provided on the outer surface of the face mask body, and an opening through which the insertion part of the controller can pass is provided at the bottom of any end along its length direction.

[0021] The above-mentioned circuit breaker with a lock is further configured as follows: The limit locking mechanism is a sliding limit locking mechanism, which includes a stopper that can be movably inserted into the through-gap and a sliding groove that restricts the movement of the movable stopper along the insertion direction. A handle is connected to the movable stopper. The handle is located outside the controller bracket, and an opening facing the handle is provided on the face mask.

[0022] In the above structure, the "outside" refers to other spaces outside the space where the controller bracket on the controller cooperates with the pluggable controller, such as the space below the bottom surface or outside the side surface of the controller bracket.

[0023] The limit locking mechanism provided by the above structure prevents the slide rail from moving through the latch, thereby locking the slide rail on the controller bracket, and then completing the locking of the overall pluggable controller. At the same time, the sliding latch structure is simple, flat, has high locking stability, small volume, and occupies little space. It basically does not affect other structures inside the circuit breaker and is also convenient for controlling the operation through the face mask, which is suitable for practical use.

[0024] As a preferred embodiment of the above structure, the sliding locking mechanism is detachably installed and fixed on the bottom surface of the controller bracket. In this way, only an opening facing the handle needs to be provided below the opening for the pluggable controller to be inserted on the face mask. This structure is simple, has little change, is convenient for processing, and has good concealment.

[0025] For the convenience of operation, the circuit breaker with a lock of the present invention is further configured as follows: The sliding limit locking mechanism is horizontally arranged at the front end where the control bracket contacts the pluggable control. The stopper is horizontally inserted into the through-gap that cuts off the sliding groove or the through-gap between the front end of the sliding groove and the front end of the controller bracket.

[0026] To further reduce the volume occupied by the limit locking mechanism, at least part of the stopper is in the same plane as the sliding groove. The above structure reduces the volume by overlapping and compressing the height of the limit locking mechanism in the height direction perpendicular to the sliding groove.

[0027] The circuit breaker with a lock of the present invention is further configured as follows: A return spring is provided between the stopper and the groove wall of the sliding groove along its sliding direction. The return spring is used to make the sliding limit locking mechanism act as "closed" under normal conditions, so as to facilitate automatic locking, reduce the operation difficulty, and can also effectively maintain the locked state of the pluggable controller, improving the practical performance of the sliding locking mechanism.

[0028] To achieve precise alignment between the pluggable controller and the controller bracket, the lockable circuit breaker of the present invention is further configured as follows: A first positioning groove is provided at one edge of the upper cover of the pluggable controller, and a second positioning groove is provided on the face mask at a position corresponding to the first positioning groove. A positioning plug is provided that cooperates with both the first positioning groove and the second positioning groove. The above structure strengthens the control of the relative position between the pluggable controller and the face mask through the positioning plug, avoids the need for auxiliary positioning during the plugging and unplugging and other usage processes of the pluggable controller, helps the pluggable controller to be precisely aligned with the controller bracket, and makes the pluggable controller more convenient for plugging and unplugging. In addition, the present invention uses a positioning plug for positioning in a plug-and-play manner, which is pulled out together with the pluggable controller when the pluggable controller is pulled out for replacement or maintenance, and fully cooperates with the pluggable controller to achieve plug-and-play use. Its structure is simple and the processing difficulty is low.

[0029] To ensure the positioning effect and prevent the positioning plug from falling off easily, resulting in the loss of the positioning effect, the lockable circuit breaker of the present invention is further configured as follows: The first positioning groove and / or the second positioning groove are tightly fitted with the positioning plug. Under the tight-fitting action of the positioning plug with the first positioning groove or the second positioning groove, this positioning structure strengthens the connection between the upper cover and the face mask, and further fixes the pluggable controller inserted on the controller bracket from the outside.

[0030] Preferably, the first positioning groove is provided at the top of the upper cover of the pluggable circuit breaker and is combined with the slide rail at the bottom of the pluggable controller to "lock" the pluggable controller on the circuit breaker body from above and below. Or further, it is provided at a corner of the upper cover, and the locking cooperation effect is more excellent.

[0031] To simplify the structure of the pluggable controller and reduce the assembly difficulty, the lockable circuit breaker of the present invention is further configured as follows: A wireless power module is integrated on the plug-in component, and the wireless power module is an electromagnetic induction type wireless or magnetic field resonance type. The wireless power module can reduce the power connection components between the controller and the circuit breaker body or the wiring hole structure on the controller for external power supply, thereby simplifying the structure of the circuit breaker body base and the structure of the controller itself, reducing the processing difficulty, and optimizing the structure of the back of the circuit breaker.

[0032] The beneficial effects of the present invention are as follows: The present invention locks the pluggable controller on the controller bracket in a limited way by setting a limit locking mechanism on the controller bracket and a through gap for cooperation to achieve limit on the slide rail of the pluggable controller, with the smallest structural modification and a relatively small volume, realizing the locking between the pluggable controller and the circuit breaker body in a true sense, and can effectively improve the safety performance of the circuit breaker during use.

[0033] Moreover, the limit locking mechanism provided by the present invention makes very little change to the pluggable controller, the face mask and the controller bracket. Therefore, compared with the locking mechanisms in the prior art, the change to the product structure is extremely small, which can reduce the risk and cost of remanufacturing new molds. It can also finely adjust the existing products through modification (regardless of the internal structure of the pluggable controller), so as to achieve a stable, concealed and safe locking function between the pluggable controller and the circuit breaker body, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is an overall schematic diagram of Specific Embodiment 1 of the present invention.

[0035] Figure 2 It is an overall plugging and unplugging schematic diagram of Specific Embodiment 1 of the present invention.

[0036] Figure 3 It is an overall exploded schematic diagram of Specific Embodiment 1 of the present invention.

[0037] Figure 4 It is an overall schematic diagram of the pluggable controller of Specific Embodiment 1 of the present invention.

[0038] Figure 5 It is a back schematic diagram of the pluggable controller of Specific Embodiment 1 of the present invention.

[0039] Figure 6 It is an overall schematic diagram of the electronic circuit board of Specific Embodiment 1 of the present invention.

[0040] Figure 7 It is a back schematic diagram of the electronic circuit board of Specific Embodiment 1 of the present invention.

[0041] Figure 8 It is a schematic diagram of the base structure of the circuit breaker body of Specific Embodiment 1 of the present invention.

[0042] Figure 9 It is a schematic diagram of the sliding groove structure of Specific Embodiment 1 of the present invention.

[0043] Figure 10 It is a sectional structure schematic diagram of part A of the sliding groove of Specific Embodiment 1 of the present invention.

[0044] Figure 11 It is a schematic diagram of the sliding block structure of Specific Embodiment 1 of the present invention.

[0045] Figure 12 It is a sectional structure schematic diagram of the sliding block of Specific Embodiment 1 of the present invention.

[0046] Figure 13 It is a schematic diagram of the sliding type limit locking mechanism of Specific Embodiment 1 of the present invention.

[0047] Figure 14Schematic diagram of the usage state 1 of the controller bracket - sliding type limit locking mechanism in the specific embodiment 1 of the present invention.

[0048] Figure 15 Schematic diagram of the usage state 2 of the controller bracket - sliding type limit locking mechanism in the specific embodiment 1 of the present invention.

[0049] Figure 16 Schematic diagram of the overall structure of the lower cover in the specific embodiment 1 of the present invention.

[0050] Figure 17 Schematic diagram of the sectional structure of the lower cover in the specific embodiment 1 of the present invention.

[0051] Figure 18 Schematic diagram of the integrated connector structure in the specific embodiment 1 of the present invention.

[0052] Figure 19 Schematic diagram of the mating state 1 in the specific embodiment 1 of the present invention.

[0053] Figure 20 Schematic diagram of the mating state 2 in the specific embodiment 1 of the present invention.

[0054] Figure 21 Structure diagram of the rail - chute cooperation in the specific embodiment 1 of the present invention.

[0055] Figure 22 Overall schematic diagram of the locked state in the specific embodiment 1 of the present invention

[0056] Figure 23 is Figure 22 Partial enlarged schematic diagram.

[0057] Figure 24 Schematic diagram of the unlocked state structure in the specific embodiment 1 of the present invention.

[0058] Figure 25 Schematic diagram of the mating relationship between the pluggable controller and the controller bracket in the specific embodiment 1 of the present invention.

[0059] Reference numerals: 1 - breaker body base, 2 - controller base, 3 - controller bracket, 4 - sliding groove, 5 - transverse latch, 6 - positioning plug (longitudinal latch), 7 - face mask, 8 - lower cover, 9 - integrated circuit connector, 10 - power switch, 11 - electronic circuit board, 12 - upper cover, 13 - liquid crystal display screen, 14 - pluggable controller;

[0060] 101 - Installation location, 301 - Main body platform, 302 - Installation column, 303 - First installation hole, 304 - Second installation hole, 305 - Slide groove, 306 - Concave cavity, 401 - Installation part, 402 - Part A, 403 - Part B, 404 - Left groove, 405 - Right slot, 406 - Slotted opening, 407 - Sliding support piece, 501 - Dial handle, 502 - Circular groove, 503 - Slotted sheet, 701 - Accommodating groove, 702 - Second positioning groove, 703 - Square protrusion, 801 - Vertical cavity, 802 - Horizontal cavity, 803 - Square groove, 804 - Protruding part, 805 - Slide rail, 901 - First sensing element, 902 - Connector socket, 1101 - Plug - in head, 1102 - Second sensing element, 1103 - First mounting seat, 1104 - Circuit board body, 1105 - Second mounting seat, 1106 - Third mounting seat, 1201 - First slotted opening, 1202 - Second slotted opening, 1203 - First positioning groove, 1204 - Holding groove, 1205 - Lower blocking protrusion. Detailed implementation mode

[0061] The present invention provides a controller that is convenient for plugging and unplugging, can be used immediately after plugging, and a circuit breaker with a lock and provided with this plug - and - play controller. The main structure includes the circuit breaker body base 1, the controller bracket 3, the horizontal lock bracket, the face mask 7, and the plug - and - play controller 14. The controller bracket 3 is provided with a plug - in component, and the plug - and - play controller 14 is provided with a corresponding plug - in head 1101. At the same time, slide rails 805 and slide grooves 305 are respectively arranged on the controller bracket 3 and the plug - and - play controller 14. Through the cooperation of the slide rail 805 and the slide groove 305, the plug - and - play controller 14 can move along the slide rail 805 and the slide groove 305 on the controller bracket 3 and be electrically connected to the plug - in component. On the controller bracket 3, a limit locking mechanism is provided to lock the plug - and - play controller 14 on the controller bracket 3.

[0062] Different from the prior art where the controller of the circuit breaker is locked inside the face mask 7, in the present invention, the plug - and - play controller 14 is locked on the controller bracket 3, which can be installed, used, disassembled, and replaced without disassembling the face mask 7, and at the same time effectively improves the use safety performance of the circuit breaker.

[0063] The technical solutions of the present invention will be described in detail below in combination with specific embodiments;

[0064] Embodiment 1 combination Figure 4 With Figure 5 As shown, the present invention provides a plug - and - play controller 14 with simple structure, convenient processing, and high versatility. As shown in Figure 1 As shown, the plug - and - play controller 14 includes an upper cover 12, a lower cover 8, an electronic circuit board 11, and a plug - in head 1101. The specific structure of the lower cover 8 is as Figure 22 With Figure 23As shown, it is an L-shaped hollow shell, the inner cavity of the hollow shell is L-shaped - divided into a vertical cavity 801 in the vertical direction and a horizontal cavity 802 in the horizontal direction, the structure where the horizontal cavity 802 is located is the L-shaped protrusion 804, and the horizontal cavity 802 is connected from front to back - one end of the horizontal cavity 802 is arranged on the end face of the protruding front end of the protrusion 804, so that the plug head 1101 can be inserted therein, and the other end of the horizontal cavity 801 is directly connected. In this embodiment, the side of the lower cover 8 opposite to the upper cover 12 is open, so that the vertical cavity 801 is directly connected to the outside as a whole, so as to facilitate the assembly of the electronic circuit board 11. The bottom surface of the lower cover 8 is provided with a slide rail 805 along the plug-in direction (generally the protruding direction of the lower cover 8, or the plug-in direction of the lower cover 8 and the upper cover 12). In this embodiment Figure 18 In the embodiment, the slide rail 805 is dovetail-shaped. One end of the slide rail 805 is arranged in the insertion direction and the other end is arranged in the extraction direction. There is a gap between the other end of the slide rail 805 and the outer side of the bottom surface of the lower cover 8 (the side opposite to the upper cover 12 is the outer side) and the slide rail 805. Figure 5 In a specific implementation manner provided in the specification, the length of the slide rail 805 is limited, that is, the slide rail 805 is not provided at the outer edge of the bottom surface of the lower cover 8, and there is a certain gap between the outer edge and the other end of the slide rail 805.

[0065] Of course, the structure of the through gap is Figure 5 In addition to the interval shown, it can also be a gap that cuts the slide rail 805 from the middle. In addition, depending on the structure of the block that cooperates with the gap to lock, the size, shape and dimensions of the gap can be changed without being restricted to the attached Figure 5 In the specific implementation manner provided, for example, the through gap may also be an opening somewhere in the slide rail 805 .

[0066] The structure of the upper cover 12 is as follows Figure 4 and Figure 1 As shown, it is a cover structure, and its surface is provided with a groove 1201 for assembling or exposing the LCD screen 13, a groove 1202 for installing or exposing the power switch 10, and two parallel and adjacent holding grooves 1204 located in the middle of the outward side surface of the cover body. The groove walls between the holding grooves 1204 can be used as a holding handle to take the upper cover 12 or control the movement of the pluggable controller 14 by taking the upper cover 12.

[0067] In order to improve the independence and modular structure of the electronic circuit board 11, so as to facilitate assembly, reduce external wires and improve the concentration of electrical components, see Figure 6 , Figure 7, in this embodiment, the electronic circuit board 11 includes a circuit board body 1104 and at least three mounting seats. Among them, the first mounting seat 1103 and the second mounting seat 1105 are located on the side surface of the electronic circuit board 11 opposite to the upper cover 12 (hereinafter referred to as the outer side surface), and the third mounting seat 1106 is located on the side surface of the electronic circuit board 11 opposite to the lower cover 8 (hereinafter referred to as the inner side surface). The first mounting seat 1103 is arranged at the middle position of the outer side surface, and a power switch 10 is installed on the end surface of the top of its seat body. The second mounting seat 1105 includes two electrically mounting posts 302 arranged in parallel and at intervals, and a liquid crystal screen 13 is jointly installed on the end surface of the top of its seat body. The third mounting seat 1106 is arranged at the bottom of the inner side surface, and its size is adapted to the size of the horizontal cavity 802 in the protruding portion 804 of the lower cover 8. A plug 1101 is installed on the end surface of the top of the seat body of the third mounting seat 1106.

[0068] In the above structure, in order to enable the electrical components arranged on the mounting seats to be connected to the circuits on the circuit board body 1104, in this embodiment, the mounting seats can be set as electrical sockets (such as the sockets corresponding to socket strips) or other electrical connection seats similar to socket strip sockets.

[0069] Through the above structure, the electronic circuit board 11 can be fixedly installed on the lower cover 8 without connectors through the cooperation of the plug 1101 and the protruding portion 804. The size of the upper cover 12 is adapted to the size of the open side of the lower cover 8. When the upper cover 12 is covered on the lower cover 8, the electronic circuit board 11 is installed in the cavity formed by covering the lower cover 8. It is preferably fixed as a whole with a detachable connector such as a screw between the upper cover 12 and the lower cover 8.

[0070] In order that after assembly, the liquid crystal screen 13 and the power switch 10 can be exactly exposed through the first slot 1201 and the second slot 1202 and exactly aligned with the openings of the first slot 1201 and the second slot 1202, and the openings are blocked from the inside. In this embodiment, the heights of the first mounting seat 1103 and the second mounting seat 1105 are adapted to the distances between the liquid crystal screen 13 and the power switch 10 fixed on the electronic circuit board 11 and the upper cover 12, and the sizes of the first slot 1201 and the second slot 1202 are slightly smaller than the overall sizes of the liquid crystal screen 13 and the power switch 10.

[0071] The smooth and lockless external structure of the pluggable controller 14 provided in this embodiment is like that without a lock structure, with the smallest change to the external structure of the controller and extremely small structural modification to the slide rail 805, effectively ensuring the simplicity of the structure of the pluggable controller 14. At the same time, in combination with the structure of the mounting base in this embodiment, the plug 1101, the liquid crystal display screen 13, and the power switch 10 are integrated, modularized with the electronic circuit board 11 and can be independent of the upper cover 12 and the lower cover 8, which is beneficial to simplifying the structures of the upper cover 12 and the lower cover 8 and also facilitates assembly and the recycling and reuse of the upper cover 12 and the lower cover 8. Therefore, the pluggable controller 14 provided by the present invention is convenient for plugging and unplugging, as well as for maintenance and replacement.

[0072] Moreover, since the controller is changed to a modular plug-and-play type through the above structure, the requirements for the installation structure size on the side wall are reduced. Instead, the size of the liquid crystal display screen 13 can be increased to 70 mm in length and 50 mm in width. Furthermore, a touch screen can be used to achieve a better user experience. At the same time, the DIP switches or knobs originally used on the controller are reduced or completely removed, greatly reducing the cost.

[0073] In addition, the power switch 10 specially provided by the present invention to achieve the plug-and-play function can appear anywhere on the controller housing except for the installation positions provided in the above specific embodiments, and its form can also be in the form of a button, a DIP switch, a knob, etc.

[0074] The power switch 10 can cut off the current at the power input end of the controller, and the controller can be unplugged and replaced. Compared with the replacement of the previous controller, after the external power supply is cut off, the mask 7 needs to be disassembled and the controller inlet terminal needs to be pulled out for operations to replace the controller. Its convenient operation effectively protects the personal safety of the operator.

[0075] Example 2 combines Figure 1 and Figure 2 As shown, this embodiment provides a lockable circuit breaker with a replaceable controller, which includes a circuit breaker body base 1, a controller base 2, a controller bracket 3, an integrated circuit connector 9, a mask 7, a pluggable controller 14, and a limit locking mechanism. The structure of the pluggable controller 14 is as described in Example 1. A through gap for locking is provided on the slide rail 805 at the bottom thereof, and a plug 1101 for electrical plugging is provided on the end face of the protruding portion 804. The specific structure of the circuit breaker body base 1 is shown in Figure 8 As shown, mounting holes for detachable fixed connection are provided at the lower left corner inside the circuit breaker body base 1. As Figure 3As shown, the mask 7 has a window that does not hinder the insertion and removal of the controller. The window includes two parts. The first part is a rectangular receiving groove 701 for receiving the embedding of the entire pluggable controller 14. The second part is an opening provided at the bottom of the receiving groove 701. This opening is for the protruding part 804 of the pluggable controller 14 to pass through and finally insert into the corresponding connector inside the circuit breaker.

[0076] The receiving groove 701 is used in conjunction with the controller for plugging and unplugging. When the controller is plugged into the controller bracket 3 through the opening at the bottom, the main body part of the pluggable controller 14 is embedded in the receiving groove 701. The bottom of the receiving groove 701 is used as a partition wall between the main body part of the pluggable controller 14 and the inside of the circuit breaker, separating the pluggable controller 14 from the circuit breaker. Thus, when the circuit breaker is in a breaking operation, the metal particles inside the circuit breaker will be blocked by the bottom of the receiving groove 701 and cannot impact the pluggable controller 14, extending the service life of the controller.

[0077] The controller base 2 is detachably and fixedly installed on the circuit breaker body base 1. See Figure 19 As shown, the controller bracket 3 is detachably and fixedly installed on the controller base 2 through the first mounting hole 303. The structure of the controller bracket 3 is shown in Figure 1 、 Figure 14 and Figure 15 As shown, the controller bracket 3 includes a main body platform 301 and two connecting columns. The connecting columns are respectively arranged at both ends of the side of the column body platform close to the controller base 2 (the inner side). The connecting columns are provided with the first mounting hole 303 and the second mounting hole 304. Both the first mounting hole 303 and the second mounting hole 304 are arranged in pairs to facilitate stable assembly. A chute 305 adapted to the slide rail 805 of the pluggable controller 14 is provided in the middle of the main body platform 301. The chute 305 is designed with an upper stop edge to limit the slide rail 805 of the pluggable controller 14 to move only along the arrangement direction of the chute 305. To facilitate the slide rail 805 of the pluggable controller 14 to enter the chute 305 located in the middle and having an upper baffle, a slot 406 structure for the slide rail 805 to pass through is provided between the outer side edge of the main body platform 301 and the chute 305. Below the slot 406 structure, a concave cavity 306 is formed in the bottom of the main body platform 301. The limit locking mechanism is detachably fixed to the outer side edge of the column body platform through screws and other connecting parts and the concave cavity 306.

[0078] As Figure 13 shown, in this embodiment, the limit locking mechanism is a sliding limit locking mechanism, which includes a transverse lock 5 that can be movably embedded in the through-gap and a transverse lock bracket that restricts the movement of the movable stop block along the embedding direction. The transverse lock 5 slides in the transverse lock bracket. The structure of the transverse lock bracket is shown in Figure 9 、 Figure 10As shown in the figure, it includes an installation part 401, a part A 402 for embedding a stop block, and a part B 403 for mating and plugging. The installation part 401 is an installation platform provided with an installation hole, which is matched and fixedly connected with the lower concave cavity 306. The part A 402 and the part B 403 are spaced apart at both ends of the other side of the installation part 401 that is not matched with the lower concave cavity 306. Inside the part A 402, a left groove 404 serving as a sliding groove 4 is arranged along the connection direction of the part A and the part B 403. The sliding groove 4 extends from the inside of A to the interval between the part A 402 and the part B 403. Corresponding to the position of the sliding groove 4, a right slot 405 with a diameter smaller than that of the left groove 404 is arranged in the part B 403 along the above connection line direction. The specific structure of the lateral lock 5 is as Figure 11 and Figure 12 shown. It is an overall strip-shaped movable stop block with a certain length. The overall cross-sectional size thereof is adapted to the cross-sectional size of the left groove 404. At the same time, a convex end is arranged at one end thereof, and the convex end is oppositely arranged with the right slot 405 of the part B 403. As Figure 14 、 Figure 15 shown, the whole of the lateral lock 5 is embedded in the sliding groove 4 and can slide back and forth along the sliding groove 4, so that the convex end opposite to the right slot 405 straddles the interval between the part A 402 and the part B 403 or exits from the interval. When the convex end straddles the interval, it will be mated and plugged with the right slot 405 of the part B 403, so as to realize the mating and locking of the lateral lock 5 with the lateral lock bracket. On the contrary, it is unlocking.

[0079] Of course, for the convenience of controlling the movement of the lateral lock 5, in an implementation manner, a handle 501 is arranged on a side surface of the part A 402 of the lateral lock bracket parallel to the outer side edge of the controller bracket 3 (for example, after the lateral lock bracket is fixedly installed on the controller bracket 3), so that the handle 501 is oppositely arranged with the opening at the bottom of the accommodation groove 701 of the upper cover 12. Thus, through the opening on the upper cover 12, the handle 501 can be directly operated, and further the mating state of the lateral lock 5 and the lateral lock bracket can be controlled.

[0080] Combined with the attached Figure 24 、 Figure 23It can be seen intuitively that by controlling the movement of the dial handle 501, the bar-shaped movable block can be inserted into the gap between the front end of the slide slot 305 and the front end of the controller bracket 3 from the horizontal movement, that is, the gap on the bottom surface of the pluggable controller 14, thereby blocking the gap or gap to prevent the slide rail 805 from passing through the gap, thereby achieving locking. On the contrary, when the dial handle 501 is moved to the other end of the dial slot, the convex end of the bar-shaped movable block will return to the inside of the A part 402 or near the A part 402, so as to make way for the slide rail 805 of the pluggable controller 14 to exit the interval between the A part 402 and the B part 403, thereby achieving the unlocking of the pluggable controller 14 and the circuit breaker body. In this embodiment, the locking action is achieved by a latch, and the sliding latch method has a simple and flat structure, high locking stability, a compact size, and a small space occupation. It will not affect other structures inside the circuit breaker, and is also convenient for controlling the action through the mask 7, which is suitable for practical use.

[0081] In a preferred embodiment, a return spring is provided between the transverse lock buckle 5 and the groove wall of the sliding groove 4 of the A portion 402. Under the action of deformation, the return spring pushes the transverse lock buckle 5 to move toward the B portion 403, thereby causing the sliding limit locking mechanism to be "closed" under normal conditions, effectively maintaining the locking state of the pluggable controller 14, and being able to realize the automatic locking function, thereby improving the operability and practical performance of the sliding locking mechanism.

[0082] In another embodiment, a parallel sliding support piece 407 is connected to the groove wall of the left groove 404 of the A part 402 along its length direction, and a plate groove 503 cooperating with the sliding support piece 407 is provided on the transverse lock buckle 5 / bar-shaped movable block. Through the cooperation between the plate groove 503 and the sliding support piece 407, the sliding direction of the transverse lock buckle 5 / bar-shaped movable block can be accurately controlled, and the smoothness of the sliding of the transverse lock buckle 5 / bar-shaped movable block can be improved.

[0083] In the sliding limited locking mechanism, in order to conveniently install the transverse lock buckle 5 having a certain length into the transverse lock bracket, the transverse lock buckle 5 can be configured as a plastic part so that it has a certain degree of bending.

[0084] like Figure 20 As shown, the integrated circuit connector 9 is detachably fixedly connected to the controller bracket 3 through the second mounting hole 304 on the controller bracket 3, and a socket 902 is integrated on the integrated circuit connector 9. The socket 902 needs to be perpendicular to the main body plane where the circuit breaker base is located, so that the pluggable controller 14 can be plugged in when it moves along the plug-in direction.

[0085] In a preferred implementation provided in this embodiment, a wireless power module is also integrated on the integrated circuit connector 9. The wireless power module can use electromagnetic induction or magnetic field resonance. Electromagnetic induction means that the primary coil has alternating current with a certain frequency, and a certain current is generated in the secondary coil through electromagnetic induction, so as to transfer energy from the transmission end to the receiving end. This is also the most common wireless charging solution currently. Magnetic field resonance consists of an energy transmitting device and an energy receiving device. When the two devices are adjusted to the same frequency or resonate at a specific frequency, the energy transmitting device and the energy receiving device can exchange their energies. Therefore, as Figure 24 shown, a first induction element 901 is provided on the surface of the integrated circuit connector 9. The first induction element 901 is a primary coil or a transmission end. Of course, in actual operation, the primary coil or the transmission end usually has a certain volume, and it can also be placed wholly or partially on the controller base 2, but part or its main body still needs to be fixed on the integrated circuit connector 9 and electrically connected to it. Correspondingly, in the above implementation, a corresponding second induction element 1102 (secondary coil or receiving end) must be provided on the pluggable controller 14 to cooperate with the first induction element 901 for energy transmission.

[0086] Returning to Figure 3 shown, after successively installing the controller base 2, the controller bracket 3, the sliding limit locking mechanism, the integrated circuit connector 9, the face mask 7, etc. onto the circuit breaker body base 1, finally, the pluggable controller 14 is inserted into the controller bracket 3 through the opening on the face mask 7 (in this process, it is necessary to first control the movement of the handle 501 with a tool to drive the lateral lock 5 to move out of the way). After insertion, the slide rail 805 of the controller is locked in the chute 305 on the controller bracket 3 by the sliding limit locking mechanism to complete the insertion action. When it is necessary to remove the pluggable controller for maintenance or replacement, control the lateral lock 5 to move out of the way through this window, and pinch the holding handle (formed by two adjacent holding grooves 1204) with your hand to pull out the pluggable controller 14.

[0087] Embodiment 3 The difference between this embodiment and Embodiment 2 is that: a longitudinal locking mechanism is further provided between the pluggable controller 14 and the face mask 7. At one edge of the upper cover 12 of the pluggable controller 14, a first positioning groove 1203 is provided. At a position on the face mask 7 corresponding to the first positioning groove 1203, a second positioning groove 702 is provided. Additionally, a positioning plug 6 that cooperates with the first positioning groove 1203 and the second positioning groove 702 simultaneously is provided. The first positioning groove 1203 and / or the second positioning groove 702 are tightly fitted with the positioning plug. On the one hand, the structure provided in this embodiment utilizes the structural principle that the first positioning groove 1203 and the second positioning groove 702 must cooperate with the positioning plug 6 simultaneously during processes such as plugging and unplugging to achieve auxiliary positioning, helping the pluggable controller 14 to be precisely aligned with the controller bracket 3. On the other hand, the first positioning groove 1203 is provided at a corner of the top of the upper cover 12 of the pluggable circuit breaker and is combined with the slide rail 805 at the bottom of the pluggable controller 14 to "lock" the pluggable controller 14 onto the circuit breaker body from the upper and lower positions.

[0088] Embodiment 4 As Figure 5 shown, the difference between this embodiment and the above embodiments is that: a lower blocking protrusion 1205 is provided at the bottom of the upper cover 12, and the top of the lower blocking protrusion 1205 is lower than the height where the slide rail 805 is located. The lower blocking protrusion 1205 is used to limit the distance that the pluggable controller 14 moves towards the side where the controller base 2 is located. Furthermore, when the pluggable controller 14 is in sliding fit with the controller bracket 3, the edge of the outer side of the lower cover 8 is closely attached to the limit locking mechanism 4. In other words, as Figure 20 shown, the lower blocking protrusion 1205 is used to eliminate the gap d in the figure, making the pluggable controller 14 as close as possible to the limit locking mechanism to facilitate locking the pluggable controller 14. After the pluggable controller 14 is locked, the inner side surface of the lower blocking protrusion 1205 abuts against the outer side edge of the transverse locking buckle 5 or the limit locking mechanism 4, and also prevents the pluggable controller 14 from being over-inserted into the integrated connector, protecting the insertion part.

[0089] Embodiment 5 The difference between this embodiment and the above embodiments is that: a square groove 803 is provided in the middle of the inner side surface (taking the insertion direction as the inner side) of the lower cover 8, and a square protrusion 703 that cooperates with the square groove 803 is provided in the middle of the accommodation groove 701 of the face mask 7. When the pluggable controller 14 is inserted into the accommodation groove 701, the cooperation between the square protrusion 703 and the square groove 803 is used for auxiliary positioning. The operator can align the slide rail 805 with the chute by aligning the square protrusion 703 and the square groove 803, which makes it more convenient to insert the pluggable controller 14 between the pluggable controller 14 and the circuit breaker body.

[0090] This embodiment is considered that when the plug is actually plugged in, especially when the height of the opening is greater than the thickness of the pluggable controller 14, the plug head and the opening are not completely matched, and it is sometimes difficult to judge whether the pluggable controller 14 is correctly connected to the plug-in through the bottom opening (because the plug-in is located inside the circuit breaker, the visibility is extremely low) and whether the plug-in is in place, and the accurate plug-in between the controller and the circuit breaker is more difficult. The plug-in cooperation of the square groove 803 and the square protrusion 703 can play a role in assisting positioning and assisting in judging whether the connection between the controller and the mask and the circuit breaker is in place.

[0091] Embodiment 6 The difference between this embodiment and the above-mentioned embodiments lies in that the controller base 2 is not provided in the locked circuit breaker of this embodiment, the controller bracket 3 is directly installed on the circuit breaker body base 1, and the circuit breaker body base 1 is provided with a corresponding structure for adapting to the lower cover 8 and cooperating with the integrated connector.

[0092] Embodiment 7 The difference between this embodiment and the above-mentioned embodiments is that the limit locking mechanism of this embodiment includes an upper lifting block and a lower lifting block, and the wedge surfaces between the upper lifting block and the lower lifting block cooperate. The front end of the controller bracket 3 is provided with a strip groove that is staggered (preferably perpendicular) to the length direction of the slide groove, and the limit locking mechanism is installed directly below the strip groove. The upper lifting block is inserted into the strip groove, and the lower lifting block is provided with a toggle handle toward the pull-out direction. The toggle handle controls the lower lifting block to slide in a sliding groove, and drives the upper lifting block that cooperates with its wedge surface to rise or fall, thereby causing the upper lifting block to enter or exit the strip groove. In order to ensure the locking effect, an elastic reset member can also be provided between the lower lifting block and the slide groove for reset.

[0093] Example 8 The difference between this embodiment and the above embodiments is that the limit locking mechanism of this embodiment includes a knob and an insert block which is driven by the knob to rotate and insert into the front end of the controller bracket in the space where the gap of the pluggable controller coincides. The knob and the insert block can be fitted by interference or tightly fitted using a spring.

[0094] In summary, the present invention provides a plug-and-play pluggable controller 14 and a locked circuit breaker thereof, which optimizes the structure of the pluggable controller 14, making it modular and independent for plug-and-play, and at the same time changes the locking relationship between the controller and the circuit breaker, thereby improving the locking level and safety performance. More importantly, the structures used in the present invention are all small structures with simple structure, small size, small modification range and excellent effect, which not only makes the structure easy to produce, promote and modify, but also improves the overall performance of the circuit breaker through the clever coordination between multiple small structures, making it more convenient to use.

Claims

1. A circuit breaker with a lock, comprising a circuit breaker body base, a controller bracket, a face mask, and a pluggable controller; the face mask has an opening that does not prevent the insertion and removal of the controller, and is characterized in that: The pluggable controller comprises an upper cover, a lower cover, an electronic circuit board and a plug-in head. The electronic circuit board is located in a cavity formed by the upper cover and the lower cover. A slide rail is arranged on the bottom surface of the lower cover along the pluggable direction of the plug-in head, so that one end of the slide rail faces the insertion direction and the other end is arranged along the pull-out direction. There is a through gap staggered with the slide rail between one end of the slide rail and the side edge of the bottom surface of the lower cover close to the pull-out direction. One side of the controller bracket is detachably fixedly mounted on the circuit breaker body base, and a A plug-in connector is provided to cooperate with the plug-in head. At the same time, the controller bracket is provided with a slide groove adapted to the slide rail of the pluggable controller and a limit locking mechanism for limiting the movement of the slide rail along the pull-out direction; the limit locking mechanism is a sliding limit locking mechanism, which includes a block that can be movably embedded in the gap and a sliding groove that limits the movement of the movable block along the embedding direction, and a handle is connected to the movable block; the handle is located on the outside of the controller bracket and the mask is provided with an opening that is directly opposite to the handle.

2. The locked circuit breaker according to claim 1, characterized in that: The through gap is located between the other end of the slide rail and the side edge of the bottom surface of the lower cover on the side of the pull-out direction.

3. The locked circuit breaker according to claim 1 or 2, characterized in that: The plug head is arranged on the electronic circuit board, and a corresponding position of the lower cover is provided with an opening or a slot for at least the plug head to be exposed or passed through.

4. The circuit breaker with a lock according to claim 3, characterized in that: The lower cover portion where the plug head is located protrudes from the surface of the lower cover where it is located along the insertable direction, and the shape of the plug head is adapted to the shape of the protruding portion of the lower cover, or the shape of the connecting seat between the plug head and the electronic circuit board is adapted to the shape of the protruding portion of the lower cover, or the portion of the electronic circuit board used to mount the plug head is adapted to the shape of the protruding portion of the lower cover, and the plug head is exposed or passes through the protruding end.

5. The circuit breaker with a lock according to claim 3, characterized in that: A plurality of electrical mounting seats are arranged on the side of the electronic circuit board opposite to the upper cover, and a liquid crystal screen and / or a power switch are electrically mounted on the electrical mounting seats. The upper cover is provided with a slot that does not hinder the liquid crystal screen and / or the power switch from passing through. The height of the electrical mounting seats is adapted to the distance between the liquid crystal screen and the power switch fixed on the electronic circuit board and the upper cover.

6. The circuit breaker with a lock according to any one of claims 1, 2, 4, and 5, characterized in that: A holding structure for convenient holding to plug and unplug the controller is provided in the middle of the upper cover; and / or a lower stopper is provided at the bottom of the upper cover, and the top of the lower stopper is lower than the height of the slide rail.

7. The locked circuit breaker according to claim 1, wherein: A controller base is also provided, which is detachably fixedly mounted on the circuit breaker body base, and the controller bracket is detachably fixedly mounted on the controller base; and / or a groove for accommodating the controller is provided on the outer surface of the mask body, and an opening for the plug-in part of the controller to pass through is provided on the bottom of the groove at either end along its length direction.

8. The circuit breaker with a lock according to claim 1, characterized in that: The sliding limit locking mechanism can be removably installed and fixed to the bottom surface of the controller bracket; and / or, the sliding limit locking mechanism is horizontally arranged at the front end of the control bracket in contact with the pluggable control, and the block is laterally inserted into the gap that cuts off the slide groove or the gap between the front end of the slide groove and the front end of the controller bracket.

9. The circuit breaker with a lock as claimed in claim 8, characterized in that: At least a part of the stopper is in the same plane as the chute; and / or a return spring is provided between the stopper and the groove wall of the sliding groove along its sliding direction.

10. The locked circuit breaker according to any one of claims 1, 7, 8, and 9, characterized in that: A first positioning groove is provided at one edge of the upper cover of the pluggable controller, a second positioning groove is provided on the face mask corresponding to the position of the first positioning groove, and a positioning plug-in that cooperates with the first positioning groove and the second positioning groove at the same time is provided; the first positioning groove and / or the second positioning groove are tightly fitted with the positioning plug-in.

11. The circuit breaker with a lock according to claim 10, characterized in that: The first positioning groove is provided at the top of the upper cover of the pluggable circuit breaker; and / or, a wireless power module is integrated on the plug-in, and the wireless power module is an electromagnetic induction type or a magnetic field resonance type.

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