Squirrel-cage loop structure

Abstract

The utility model provides a squirrel-cage loop structure, which comprises a box body, a first opening is arranged on the front side of the box body, and a second opening is arranged on the rear side of the box body; the back plate is connected to the rear side of the box body and covers the second opening; the loop board is connected to the front side of the back board, and the loop board is provided with a plurality of first connecting terminals and a plurality of wiring terminals; the one or more panel modules are provided with second connecting terminals, the panel modules are inserted into the box body through the first openings and cover at least part of the first openings, and the second connecting terminals are connected with the corresponding first connecting terminals; and the plurality of guide rails are arranged in the box body, and the guide rails are configured to be suitable for guiding the panel module, so that the second connecting terminals of the panel module are accurately connected with the first connecting terminals. By adopting a closed design, the structure is compact, the occupied space is small, the anti-seismic grade is high, dust and small animals are not easy to enter, internal wiring is few, external outgoing lines are neat, and the number of wiring terminals is large.

Description

Technical Field

[0001] The utility model generally relates to the technical field of fire protection, in particular to a squirrel cage type circuit structure. Background Art

[0002] The fire circuit board, also known as the fire circuit panel or fire control panel, is the core component of the automatic fire alarm system. It is mainly responsible for monitoring and managing various fire-fighting equipment connected to it, such as fire detectors, manual alarm buttons, sound and light alarms, etc., to ensure effective alarm and initial emergency response when a fire occurs.

[0003] At present, fire protection circuit boards are mostly installed in open frame structures. This installation method has the following defects:

[0004] 1. Occupies a large area and space;

[0005] 2. Dust is easily accumulated;

[0006] 3. Small animals such as spiders and reptiles can easily enter, causing discharge and damaging circuit boards;

[0007] 4. There are many internal wirings;

[0008] 5. The external wiring is messy and the number of external terminals is limited;

[0009] 6. Low earthquake resistance level.

[0010] The contents of the background technology section are merely the technologies known to the inventors and do not necessarily represent the prior art in the field. Utility Model Content

[0011] In view of one or more defects in the prior art, the utility model provides a squirrel cage circuit structure, including:

[0012] A box body, wherein a first opening is arranged at the front side of the box body, and a second opening is arranged at the rear side of the box body;

[0013] A back plate connected to the rear side of the box body, the back plate covering the second opening;

[0014] A circuit board connected to the front side of the backplane, the circuit board is provided with a plurality of first connection terminals and a plurality of wiring terminals, wherein the first connection terminals are provided on the front side of the circuit board, and the wiring terminals are located outside the box;

[0015] One or more panel modules, each of which is provided with a second connection terminal, the panel module is inserted into the box through the first opening and covers at least a portion of the first opening, and the second connection terminal is connected to the corresponding first connection terminal; and

[0016] A plurality of guide rails are arranged in the box body, and the guide rails are configured to guide the panel module so that the second connection terminal of the panel module is accurately connected to the first connection terminal.

[0017] According to one aspect of the utility model, the box comprises:

[0018] Base plate;

[0019] A top plate, arranged above the bottom plate, the top plate being substantially parallel to the top plate;

[0020] a left side plate connected between the left end of the bottom plate and the left end of the top plate; and

[0021] The right side plate is connected between the right end of the bottom plate and the right end of the top plate.

[0022] According to one aspect of the utility model, the front side of the left side panel and / or the front side of the right side panel are respectively connected with a handle panel.

[0023] According to one aspect of the utility model, the front side of the top plate and / or the front side of the bottom plate are respectively connected to mounting rails, mounting rails are provided with mounting bars, and the mounting bars are provided with a plurality of threaded holes at intervals.

[0024] According to one aspect of the utility model, the panel module is connected to the mounting bar via captive screws.

[0025] According to one aspect of the utility model, one or more second electrostatic clamps are provided in the mounting rail, and the second electrostatic clamps are suitable for connecting the box body and the panel module.

[0026] According to one aspect of the utility model, a plurality of planting columns are arranged on the back plate, the back plate is connected to the circuit board through the planting columns and screws, and the back plate is connected to the box body through the planting columns, nuts and toothed gaskets.

[0027] According to one aspect of the utility model, the edge of the back plate close to the wiring terminal is provided with a bend to form a wire binding bridge.

[0028] According to one aspect of the present invention, the panel module comprises:

[0029] a panel provided with a plurality of through holes, the panel being adapted to be connected to the front side of the box body and covering at least a portion of the first opening; and

[0030] A circuit board connected to the back of the panel, wherein the circuit board is substantially perpendicular to the panel;

[0031] Wherein, the second connecting terminal is connected to an end of the circuit board away from the panel.

[0032] According to one aspect of the utility model, a dip switch and / or an indicator light is coupled to the circuit board, the dip switch is aligned with the through hole on the panel, and the indicator light is aligned with the through hole on the panel.

[0033] According to one aspect of the utility model, a light guide column is arranged in the through hole corresponding to the indicator light.

[0034] According to one aspect of the utility model, the panel module further includes a pull-out aid, and the panel and the circuit board are connected via the pull-out aid.

[0035] According to one aspect of the utility model, the plurality of guide rails are respectively arranged on the top and / or the bottom of the box body.

[0036] According to one aspect of the utility model, a first electrostatic clamp is provided on the guide rail, and the first electrostatic clamp is conductively connected to the box.

[0037] According to one aspect of the utility model, the squirrel cage circuit structure further includes a blind plate, which is suitable for being connected to the front side of the box body and covering at least a portion of the first opening.

[0038] Compared with the prior art, the embodiment of the utility model provides a squirrel cage circuit structure, which adopts a closed design, has a compact structure, occupies a small space, has a high level of earthquake resistance, is not easy to enter dust and small animals, has fewer internal wiring, has neat external wiring, and has a large number of terminal blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0040] Figure 1 A front view of a squirrel cage circuit structure according to an embodiment of the utility model is shown;

[0041] Figure 2 An axonometric view of a squirrel cage circuit structure according to an embodiment of the utility model is shown;

[0042] Figure 3 An exploded view of a box according to an embodiment of the utility model is shown;

[0043] Figure 4 A schematic diagram of a circuit board according to an embodiment of the utility model is shown;

[0044] Figure 5 A schematic diagram of a panel module according to an embodiment of the utility model is shown;

[0045] Figure 6 A schematic diagram of a mounting rail according to the utility model is shown;

[0046] Figure 7 A front view of a back plate according to an embodiment of the present utility model is shown;

[0047] Figure 8 A side view of a back plate according to an embodiment of the present invention is shown.

[0048] In the figure: 100, squirrel cage circuit structure; 110, box; 111, first opening; 112, second opening; 113, guide rail; 114, bottom plate; 115, top plate; 1151, first connecting hole; 116, left side plate; 117, right side plate; 118, handle plate; 119, mounting rail; 1191, mounting bar; 1192, threaded hole; 120, back plate; 121, planting column; 122, bending; 123, Wire binding bridge; 124, wire binding hole; 125, assembly hole; 130, circuit board; 131, first connecting terminal; 132, wiring terminal; 133, second connecting hole; 140, panel module; 141, second connecting terminal; 142, panel; 143, circuit board; 144, through hole; 145, dip switch; 146, indicator light; 147, light guide column; 148, extraction aid; 150, blind plate; 160, captive screw. DETAILED DESCRIPTION

[0049] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0050] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0051] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0054] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0055] Figure 1 FIG. 1 shows a front view of a squirrel cage circuit structure 100 according to an embodiment of the present utility model. Figure 2 The isometric diagram of a squirrel cage circuit structure 100 according to an embodiment of the present invention is shown below. Figure 1 and Figure 2 Describe in detail.

[0056] like Figure 1 and Figure 2 As shown, the squirrel cage circuit structure 100 includes a box body 110 , a back plate 120 , a circuit board 130 and a panel module 140 . Figure 3 FIG. 1 shows an exploded view of a box body 110 according to an embodiment of the present invention. Figure 3 As shown, the box body 110 is a semi-enclosed frame having good structural strength and earthquake resistance. Specifically, the four sides (upper, lower, left and right) of the box body 110 may adopt a sheet metal structure, a first opening 111 is provided on the front side of the box body 110, and a second opening 112 is provided on the rear side of the box body 110. Figure 4 A schematic diagram of a circuit board 130 according to an embodiment of the present utility model is shown. Figure 4 As shown, the circuit board 130 is provided with a plurality of first connection terminals 131 and a plurality of connection terminals 132; wherein the first connection terminals 131 are arranged at the front side of the circuit board 130; the connection terminals 132 may be, for example, 4*4 terminals, and the plurality of connection terminals 132 are respectively arranged at the edges of the circuit board 130, for example Figure 4 As shown, a portion of the connection terminals 132 is disposed on the right edge of the circuit board 130, and another portion of the connection terminals 132 is disposed on the lower edge of the circuit board 130. Figure 1 and Figure 2As shown, the back plate 120 is connected to the rear side of the box body 110 and covers the second opening 112, wherein a first gap (not shown in the figure) is provided between the right end of the box body 110 and the back plate 120, and a second gap (not shown in the figure) is provided between the lower end of the box body 110 and the back plate 120, and the first gap and the second gap are used to avoid the circuit board 130. The circuit board 130 is arranged between the box 110 and the back plate 120, and is fixedly connected to the front side (front side) of the back plate 120, wherein the first connection terminal 131 is located inside the box 110 to connect the panel module 140 and reduce external wiring and splicing; the wiring terminals 132 are all located outside the box 110 to connect various fire fighting equipment; specifically, the wiring terminals 132 connected to the right edge of the circuit board 130 can be used as input terminals for connecting display panels, power supplies, external CAN, internal CAN, etc.; the wiring terminals 132 connected to the lower edge of the circuit board 130 can be used as output terminals for connecting on-site components such as fire detectors, manual alarm buttons, sound and light alarms, and input / output modules. Among them, by arranging the wiring terminals 132 outside the box 110, it is convenient to route external wiring and is conducive to providing more wiring terminals 132 (more wiring terminals 132 can be arranged on the circuit board 130). In some embodiments, the circuit board 130 can also be connected to the box 110 for earthquake resistance testing.

[0057] The panel module 140 can be configured as one or more, for example Figure 1 and Figure 2 In the illustrated embodiment, seven panel modules 140 are provided. Figure 5 A schematic diagram of a panel module 140 according to an embodiment of the present invention is shown. Figure 2 and Figure 5 As shown, the panel module 140 is provided with a second connection terminal 141, the panel module 140 is inserted into the box body 110 through the first opening 111 and covers at least a portion of the first opening 111, and the second connection terminal 141 on the panel module 140 is connected to the corresponding first connection terminal 131 on the circuit board 130, wherein the panel module 140 and the circuit board 130 are connected through the first connection terminal 131 and the second connection terminal 141, which can reduce internal wiring. Figure 3 As shown, the squirrel cage circuit structure 100 also includes a plurality of guide rails 113, which are disposed in the box body 110 and configured to guide the panel module 140 so that the second connection terminal 141 of the panel module 140 is accurately connected to the first connection terminal 131, thereby improving the reliability of the squirrel cage circuit structure 100.

[0058] According to one embodiment of the utility model, Figure 3As shown, the box body 110 may include a bottom plate 114, a top plate 115, a left side plate 116 and a right side plate 117, and the bottom plate 114, the top plate 115, the left side plate 116 and the right side plate 117 may all be metal plates. Among them, the top plate 115 is arranged above the bottom plate 114 and is substantially parallel to the bottom plate 114, and the left side plate 116 and the right side plate 117 are arranged between the top plate 115 and the bottom plate 114. Specifically, the upper end of the left side plate 116 is fixedly connected to the left end of the top plate 115 (for example, by welding, riveting, bolting, etc.), the lower end of the left side plate 116 is fixedly connected to the left end of the bottom plate 114, the upper end of the right side plate 117 is fixedly connected to the right end of the top plate 115, and the lower end of the right side plate 117 is fixedly connected to the right end of the bottom plate 114.

[0059] According to one embodiment of the utility model, Figure 3 As shown, a plurality of guide rails are respectively arranged at the top and the bottom of the box 110, wherein there is a preset interval between adjacent guide rails, and the guide rails located at the top of the box 110 correspond to the guide rails located at the bottom of the box 110 one by one, and a corresponding set of guide rails provide guidance for the same panel module 140. Preferably, a first electrostatic clamp is arranged on the guide rail, and the first electrostatic clamp is connected to the box 110. When the panel module 140 is inserted into the guide rail, the first electrostatic clamp connects the panel module 140 and the box 110 to conduct away the static electricity accumulated in the panel module 140, thereby eliminating potential electrostatic hazards.

[0060] According to one embodiment of the utility model, Figure 3 As shown, the box 110 may also include two handle plates 118, which are respectively connected to the front side of the left side plate 116 and the front side of the right side plate 117. Specifically, the handle plate 118 may include a connecting portion and a handle portion connected to each other, wherein the handle portion is suitable for the user to grasp with his hand, providing convenience for the user to carry the box 110; the connecting portion is used to connect the left side plate 116 / right side plate 117, for example, the connecting portion can be connected to the left side plate 116 / right side plate 117 by welding, riveting, bolt connection, etc. In some embodiments, the handle plate 118 can be installed only on the front side of the left side plate 116, or only on the front side of the right side plate 117. It should be noted that the installation position of the handle plate 118 is not limited to the front side of the left side plate 116 and the front side of the right side plate 117. Those skilled in the art should know that the handle plate 118 can also be installed at other positions of the box 110.

[0061] According to one embodiment of the utility model, Figure 3As shown, the box 110 also includes two mounting rails 119, which are respectively connected to the front side of the top plate 115 and the front side of the bottom plate 114. In some embodiments, the mounting rails 119 can be set only on the front side of the top plate 115, or only on the front side of the bottom plate 114. Figure 6 A schematic diagram of the installation guide rail 119 according to the present utility model is shown. Figure 6 As shown, a mounting bar 1191 is provided in each mounting rail 119, and a plurality of threaded holes 1192 are provided on the mounting bar 1191 at intervals along its length direction, and the mounting bar 1191 can move in the mounting rail 119 to balance the installation tolerance. Among them, the panel module 140 can be connected to the mounting bar 1191 by a captive screw 160, which will be described in detail later. Preferably, one or more second electrostatic clamps (not shown in the figure) are provided in the mounting rail 119, and the second electrostatic clamp is configured to connect the box 110 and the panel module 140 to conduct away the static electricity accumulated in the panel module 140 to eliminate potential electrostatic hazards.

[0062] In the embodiment of the present invention, the number of panel modules 140 is adjustable to meet different practical application requirements. When the number of panel modules 140 is small, the first opening 111 may not be completely blocked. In order to prevent small animals such as spiders and reptiles from invading the interior of the box 110 through this opening, Figure 1 and Figure 2 As shown, one or more blind plates 150 can be arranged on the front side of the box body 110 to cooperate with the panel module 140 to completely cover the first opening 111. Mounting holes are arranged at the upper and lower ends of the blind plate 150. By passing the captive screws 160 through the mounting holes on the blind plate 150 and screwing them into the corresponding threaded holes 1192 on the mounting strip 1191, the blind plate 150 can be firmly fixed. The use of the captive screws 160 also improves the reliability of the installation process, and can maintain the stability of the connection even in the case of frequent disassembly and repeated use.

[0063] According to one embodiment of the utility model, Figure 5 As shown, the panel module 140 may include a panel 142 and a circuit board 143, wherein the circuit board 143 is connected to the back of the panel 142 and is substantially perpendicular to the panel 142, and the second connection terminal 141 is connected to an end of the circuit board 143 away from the panel 142. The panel 142 may be a metal plate, such as an aluminum alloy plate, and the width of the panel 142 may be an integer multiple of 20.32 mm (0.8 inch) to accommodate different slots, such as Figure 1 and Figure 2As shown, some of the panels 142 have a width of 20.32 mm, and some of the panels 142 have a width of 40.64 mm. A plurality of through holes 144 are provided on the panel 142, wherein the through holes 144 at the upper end and / or the lower end of the panel 142 can be used to cooperate with the captive screws 160 to realize the connection between the panel 142 and the mounting strip 1191, and the through holes 144 in the middle of the panel 142 can be used to install other accessories (this will be described in detail later). Specifically, after the panel module 140 is inserted into the box body 110 through the first opening 111, the panel 142 is attached to the front side of the box body 110 and covers at least part of the first opening 111, and the panel module 140 can be firmly fixed by passing the captive screws 160 through the through holes 144 at the upper end or the lower end of the panel 142 and screwing them into the corresponding threaded holes 1192 on the mounting strip 1191. The use of the captive screws 160 also improves the reliability of the installation process, and can maintain the stability of the connection even in the case of frequent disassembly and repeated use.

[0064] According to one embodiment of the utility model, Figure 5 As shown, a dip switch 145 can be coupled to the circuit board 143, and the dip switch 145 is aligned with the through hole 144 on the panel 142. Through the above arrangement, the user can directly operate the dip switch 145 to quickly adjust and set the circuit function. This design not only improves the intuitiveness and convenience of operation, but also reduces the need for external connections, thereby reducing the complexity of the circuit and the potential failure rate. In addition, this arrangement method also helps to improve the aesthetics and neatness of the overall design, making the panel 142 look more coordinated and unified.

[0065] According to one embodiment of the utility model, Figure 5 As shown, one or more indicator lights 146 can be coupled to the circuit board 143, and the indicator lights 146 are aligned with the through holes 144 on the panel 142. Preferably, light guides 147 can be set in the through holes 144 corresponding to the indicator lights 146. The function of these light guides 147 is to effectively guide the light emitted by the indicator lights 146 to a specific direction, so that the status indication is clearer and more intuitive, so that the user can quickly identify the indication status even at a long distance or in an environment with poor visibility. In addition, the light guides 147 can also be set to a specific shape and color as needed to enhance the visual effect of the indicator lights 146 and make them more eye-catching, which not only helps to improve the user experience, but also increases the aesthetics of the device.

[0066] According to one embodiment of the utility model, Figure 5As shown, the panel module 140 further includes an extraction aid 148, and the panel 142 and the circuit board 143 are connected via the extraction aid 148. Through the above arrangement, when the user replaces or maintains the circuit board 143, the circuit board 143 can be easily pulled out from its installation position without using any tools or performing complicated operations, which not only improves the disassembly and assembly efficiency, but also reduces the risk of damage to the circuit board 143 caused by improper operation.

[0067] According to an embodiment of the present invention, the back plate 120 may be a metal plate, such as a zinc plate, which is mainly made of zinc element and has excellent corrosion resistance, wear resistance, plasticity and conductivity. Figure 7 A front view of a back plate 120 according to an embodiment of the present invention is shown. Figure 7 As shown, a plurality of columns 121 are provided on the back plate 120, wherein a part of the columns 121 can be connected to the box body 110 with nuts and toothed washers, and another part of the columns 121 can be connected to the circuit board 130 with screws. Figure 3 and Figure 7 As shown, a flange is provided at the rear side of the box body 110, and a plurality of first connection holes 1151 are arranged on the flange. A portion of the planting columns 121 on the back plate 120 pass through the flange at the rear side of the box body 110 through the first connection holes 1151. Nuts are screwed on these planting columns 121, and toothed washers are provided. This design not only ensures the firm locking of the back plate 120, but also significantly improves the anti-seismic performance of the squirrel cage circuit structure 100, thereby ensuring the stable operation of the entire system. Figure 4 and Figure 7 As shown, a plurality of second connection holes 133 are provided on the circuit board 130, so that another part of the planting columns 121 on the back plate 120 can smoothly pass through the circuit board 130, and screws are connected to the ends of these planting columns 121. Through these screws, the circuit board 130 can be stably locked on the planting columns 121. This connection method not only improves the stability of the overall structure, but also facilitates subsequent assembly and maintenance work.

[0068] Figure 8 A side view of a back plate 120 according to an embodiment of the present invention is shown. Figure 2 and Figure 8 As shown, a bend 122 may be provided at the edge of the back plate 120 to improve the structural strength of the back plate 120. Preferably, a wire binding bridge 123 may be formed at the bend 122 near the wiring terminal 132 on the back plate 120, and the wire binding bridge 123 has one or more wire binding holes 124. The provision of the wire binding bridge 123 may facilitate the user to organize and fix the cables, and realize orderly management of the cables. Specifically, the user may use a wire binding rope to pass through the wire binding hole 124 and bind the cables to the wire binding bridge 123.

[0069] According to one embodiment of the utility model, Figure 7 As shown, a plurality of assembly holes 125 are provided on the back plate 120 so as to fix the squirrel cage circuit structure 100 (back plate 120) to the chassis using bolts.

[0070] Compared with the prior art, the embodiment of the utility model provides a squirrel cage loop structure 100, wherein the box body 110, the back plate 120, the panel module 140 (the panel 142) and the blind plate 150 form a closed box structure, which can effectively prevent dust and small animals from entering, and can provide good protection for the loop board 130 and the circuit board 143; the box body 110 has good structural strength and seismic resistance, and the box body 110 adopts a modular design, wherein each component (such as the mounting rail 119, the guide rail 113, etc.) supports the selection of multiple models of standard parts; the panel module 140 and the loop board 130 are connected through the first connecting terminal 131 and the second connecting terminal 141, which is conducive to reducing internal wiring and facilitating user assembly; the loop board 130 adopts an overall design, which is lower in cost and can save wiring and assembly time; the wiring terminal 132 is arranged at the edge of the loop board 130 and exposed outside the box body 110, which is conducive to external wiring; the setting of the wire binding bridge 123 is convenient for users to organize and fix cables.

[0071] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A squirrel cage circuit structure, characterized in that: include: A box body, wherein a first opening is arranged at a front side of the box body, and a second opening is arranged at a rear side of the box body; A back plate connected to the rear side of the box body, the back plate covering the second opening; A circuit board connected to the front side of the backplane, the circuit board is provided with a plurality of first connection terminals and a plurality of wiring terminals, wherein the first connection terminals are provided on the front side of the circuit board, and the wiring terminals are located outside the box; One or more panel modules, each of which is provided with a second connection terminal, the panel module is inserted into the box through the first opening and covers at least a portion of the first opening, and the second connection terminal is connected to the corresponding first connection terminal; and A plurality of guide rails are arranged in the box body, and the guide rails are configured to guide the panel module so that the second connection terminal of the panel module is accurately connected to the first connection terminal.

2. The squirrel cage circuit structure according to claim 1, characterized in that: The box body comprises: Base plate; A top plate, arranged above the bottom plate, the top plate being substantially parallel to the top plate; a left side plate connected between the left end of the bottom plate and the left end of the top plate; and The right side plate is connected between the right end of the bottom plate and the right end of the top plate.

3. The squirrel cage circuit structure according to claim 2, characterized in that: The front side of the left side plate and / or the front side of the right side plate are respectively connected with a handle plate.

4. The squirrel cage circuit structure according to claim 2, characterized in that: The front side of the top plate and / or the front side of the bottom plate are respectively connected to mounting rails, mounting rails are provided with mounting bars, and the mounting bars are provided with a plurality of threaded holes at intervals.

5. The squirrel cage circuit structure according to claim 4, characterized in that: The panel module is connected to the mounting bar via captive screws.

6. The squirrel cage circuit structure according to claim 5, characterized in that: One or more second electrostatic clamps are arranged in the mounting rail, and the second electrostatic clamps are suitable for connecting the box body and the panel module.

7. The squirrel cage circuit structure according to claim 1, characterized in that: The back plate is provided with a plurality of planting columns, the back plate is connected to the circuit board through the planting columns and screws, and the back plate is connected to the box body through the planting columns, nuts and toothed gaskets.

8. The squirrel cage circuit structure according to claim 1, characterized in that: The edge of the back plate close to the wiring terminal is provided with a bend to form a wire binding bridge.

9. The squirrel cage circuit structure according to claim 1, characterized in that: The panel module comprises: a panel provided with a plurality of through holes, the panel being adapted to be connected to the front side of the box body and covering at least a portion of the first opening; and A circuit board connected to the back of the panel, wherein the circuit board is substantially perpendicular to the panel; Wherein, the second connecting terminal is connected to an end of the circuit board away from the panel.

10. The squirrel cage circuit structure according to claim 9, characterized in that: A dip switch and / or an indicator light is coupled to the circuit board. The dip switch is aligned with the through hole on the panel, and the indicator light is aligned with the through hole on the panel.

11. The squirrel cage circuit structure according to claim 10, characterized in that: A light guide column is arranged in the through hole corresponding to the indicator light.

12. The squirrel cage circuit structure according to claim 9, characterized in that: The panel module also includes a pull-out aid, and the panel and the circuit board are connected via the pull-out aid.

13. The squirrel cage circuit structure according to claim 1, characterized in that: The plurality of guide rails are respectively arranged on the top and / or the bottom of the box body.

14. The squirrel cage circuit structure according to claim 1, characterized in that: A first electrostatic clamp is arranged on the guide rail, and the first electrostatic clamp is in electrical communication with the box.

15. The squirrel cage circuit structure according to claim 1, characterized in that: The squirrel cage circuit structure further includes a blind plate, which is suitable for being connected to the front side of the box body and covering at least a portion of the first opening.

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