A communication backpack

Abstract

The present invention discloses a communication backpack, including a shell, a backpack accessory and an assembly part. Among them, an installation cavity for accommodating a communication module is provided inside the shell, and a slot is provided outside the shell; the communication module is connected to the circuit breaker through a cable extending out of the shell; the circuit breaker is installed on the distribution box through a guide rail. By providing a slot on the shell, a plug block corresponding to the slot is provided on the fixed backpack accessory, and the fixed backpack accessory is connected to the shell through the cooperation of the plug block and the slot, and the fixed backpack accessory is provided with a mounting hole for connecting the guide rail, so that the communication backpack and the circuit breaker can be installed on the same guide rail; the installation method of the communication backpack installed on the guide rail, compared with the installation method in the prior art in which the circuit breaker is fixed on the guide rail and the communication backpack is fixed on one side of the circuit breaker, can make the installation position of the communication backpack relative to the circuit breaker more flexible, and also facilitate the installation and disassembly of the communication backpack.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to a communication backpack. Background Art

[0002] Circuit breakers, especially electronic plastic case circuit breakers, are very compact in space, so in order to realize the communication function, they are usually equipped with an independent communication backpack (communication module). The communication backpack includes a shell and a communication circuit board arranged in the shell, and the communication circuit board is connected to the circuit breaker through a data line extending out of the shell; the shell is provided with a guide block protruding outward, and one of the side walls of the circuit breaker shell is provided with a hanging groove, and the shell is installed on the hanging groove on one side of the circuit breaker shell through the guide block.

[0003] However, since the circuit breaker housing usually has only one side with a hanging groove, the shell of the communication backpack can only be installed on one side of the circuit breaker housing. The installation method of the communication backpack is not flexible enough and cannot take into account the requirements of left-hanging or right-hanging use of the communication backpack, and the scope of use is relatively narrow. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art that the communication backpack is difficult to process, the guide rails of the communication backpack can only be fixed, and it is impossible to hang it on the left or right side of the product, thereby providing a communication backpack.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows: a communication backpack, comprising:

[0006] The housing has a mounting cavity for accommodating the communication module and a slot on the outside; the communication module is connected to the circuit breaker via a cable extending out of the housing; the circuit breaker is mounted on the distribution box via a guide rail;

[0007] A backpack accessory, on which an insert block protruding outward is provided, and is connected to the housing through the cooperation between the insert block and the slot;

[0008] The backpack accessory is provided with an assembly portion for connecting with the guide rail.

[0009] Furthermore, the backpack accessory is in the shape of an elongated strip, the assembly portion is arranged at two ends of the backpack accessory in the length direction, and a portion of the assembly portion extending outward from the shell is provided with a mounting hole for connecting to the guide rail.

[0010] Furthermore, the assembly portion is a track groove provided on the backpack accessory, and the track groove is slidably matched with the guide rail.

[0011] Furthermore, the slot is arranged on the side wall of the shell, the slot is dovetail-shaped, the plug block is slidably installed in the slot, the bottom of the slot is provided with a card slot, and the plug block is provided with a card block protruding outward on the side facing the bottom of the slot, and the card block is engaged with the card slot to fix the plug block on the slot.

[0012] Furthermore, a side of the clamping block facing the bottom of the slot is provided with an inclined guide surface for facilitating the sliding of the inserting block in the slot.

[0013] Furthermore, a socket is provided at one end of the slot, and the slot includes a wide slot portion with a large width close to the socket and a narrow slot portion with a small width away from the socket, and the narrow slot portion is dovetail-shaped; a first limiting end face facing the slot direction is also provided at the transition position between the wide slot portion and the narrow slot portion, and a second limiting end face that cooperates with the first limiting end face is provided on the plug block.

[0014] Furthermore, the shell is formed by splicing an upper shell and a lower shell, and the installation cavity is formed between the upper shell and the lower shell; the card slot is formed by the butt end surfaces of the upper shell and the lower shell.

[0015] Furthermore, a guide block protruding outward is connected to a side surface of the shell that is perpendicular to the backpack accessory, and the cross-section of the guide block is an inverted trapezoid. The guide block is slidably fitted in a hanging groove on the side wall of the circuit breaker; a wiring hole for the wiring to pass through is provided on the guide block; and guide columns located on both sides of the guide block are also provided on the shell.

[0016] Furthermore, a data receiving port is formed on a side wall of the shell facing away from the slot.

[0017] The technical solution of the present invention has the following advantages:

[0018] 1. The communication backpack provided by the present invention has a slot arranged on a shell, and an insert block corresponding to the slot arranged on a backpack accessory, so that the backpack accessory is connected to the shell through the cooperation of the insert block and the slot, and an assembly part for connecting a guide rail is provided on the backpack accessory, so that the communication backpack and the circuit breaker can be installed on the same guide rail; compared with the installation method in which the circuit breaker is fixed on the guide rail and the communication backpack is fixed on one side of the circuit breaker in the prior art, the installation position of the communication backpack relative to the circuit breaker can be more flexible, and the installation and disassembly of the communication backpack is also convenient, while it is convenient to maintain the backpack accessories and facilitate the maintenance personnel to judge the circuit breaker status information.

[0019] 2. In the communication backpack provided by the present invention, a mounting hole for connecting to the guide rail is provided at a portion of the assembly portion extending outwardly relative to the shell, so as to facilitate the operation of locking screws on the mounting hole and facilitate the fixation of the backpack accessories to the guide rail.

[0020] 3. In the communication backpack provided by the present invention, backpack accessories can be slidably installed on the guide rails through the track grooves thereon, so that the installation position of the communication backpack can be flexibly adjusted.

[0021] 4. The communication backpack provided by the present invention has a dovetail-shaped slot on the shell, a card slot is arranged at the bottom of the slot, and a card block protruding outward is arranged on the side of the plug block facing the bottom of the slot. When the plug block is inserted into the slot, the card block on the plug block and the card slot at the bottom of the slot can be further engaged with each other, thereby realizing the fixation between the shell and the backpack accessories, so that the backpack accessories are more firmly and reliably fixed on the shell.

[0022] 5. The communication backpack provided by the present invention has a slot comprising a wide slot portion and a narrow slot portion, which facilitates the insertion of the plug into the slot from the notch of the wide slot portion of the slot, thereby preventing the plug on the backpack accessory from being inserted in the wrong direction; and a first limiting end face is provided on the slot and a second limiting end face is provided on the plug, and through the limiting cooperation of the first limiting end face and the second limiting end face, the plug and the slot can be positioned when they are mated and plugged in.

[0023] 6. The communication backpack provided by the present invention has a shell formed by splicing an upper shell and a lower shell, which can facilitate the installation of a circuit board with a communication module in the shell and facilitate the positioning of the circuit board in the shell; and during the injection molding process of the shell, there is no need for lateral core pulling, which reduces the processing difficulty of the mold required to manufacture the shell.

[0024] 7. In the communication backpack provided by the present invention, the card slot is formed by enclosing the butt end faces of the upper shell and the lower shell, which can reduce the difficulty of mold processing and avoid deformation of the edge of the card slot during demoulding.

[0025] 8. The communication backpack provided by the present invention has a guide block with an inverted trapezoidal cross-section on the shell, which can facilitate the shell to be hung on the circuit breaker through the guide block; a wiring hole is provided on the guide block, so that the wiring can pass through the wiring hole to hide the wiring.

[0026] 9. The communication backpack provided by the present invention has a guide column arranged on the shell, which can be used for guidance and positioning when installing the shell, making it convenient for the shell to be installed on the circuit breaker.

[0027] 10. The communication backpack provided by the present invention has a shell with a guide block whose surface is designed to be bilaterally symmetrical, so that the communication backpack can be used for both left and right hanging on the circuit breaker, which can expand the scope of use of the communication backpack. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the connection relationship between the rail-type backpack accessory and the rail provided in the first embodiment of the present invention;

[0030] Figure 2 A three-dimensional structural diagram of the shell of a communication backpack provided in Embodiment 1 of the present invention;

[0031] Figure 3 An exploded view of the shell of the communication backpack provided in the first embodiment of the present invention;

[0032] Figure 4 A left side view of the shell of the communication backpack provided in the first embodiment of the present invention;

[0033] Figure 5 A three-dimensional structural diagram of a rail-type backpack accessory provided in Embodiment 1 of the present invention;

[0034] Figure 6 A cross-sectional view of the connection relationship between the housing and the rail-type backpack accessory provided in the first embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the connection relationship between the plug block and the slot on the rail-type backpack accessory provided in the first embodiment of the present invention;

[0036] Figure 8 A schematic diagram of the connection relationship between the rail-type backpack accessory and the rail provided in the first embodiment of the present invention;

[0037] Fig. 9 A schematic diagram of the connection relationship between the housing and the fixed backpack accessory provided in the second embodiment of the present invention;

[0038] Fig.10 A three-dimensional structural diagram of a fixed backpack accessory provided in Embodiment 2 of the present invention;

[0039] Fig.11 A cross-sectional view showing the connection between the housing and the fixed backpack accessory provided in the second embodiment of the present invention;

[0040] Fig.12 A schematic diagram of the connection relationship between the plug block and the slot on the fixed backpack accessory provided in the second embodiment of the present invention;

[0041] Fig.13This is a schematic diagram of the connection relationship between the fixed backpack accessory and the guide rail provided in the second embodiment of the present invention.

[0042] Explanation of the reference numerals: 1. Shell; 110. Upper shell; 120. Lower shell; 121. Guide block; 122. Wiring hole; 123. Guide column; 130. Slot; 131. Card slot; 132. Notch; 133. First limit end face; 140. Data receiving port; 2. Guide rail accessory; 210. Insert block; 211. Card block; 212. Second limit end face; 220. Rivet; 230. Track groove; 3. Fixed accessory; 310. Waist hole; 4. Spring clip; 5. Guide rail. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] Embodiment 1

[0048] like Figure 1-8A communication backpack shown in the figure includes a housing 1 and a guide rail 5 backpack accessory. The housing 1 is provided with an installation cavity for accommodating a communication module, and a slot 130 is provided on the outside of the housing 1; the communication module is connected to the circuit breaker through a cable extending out of the housing 1; the circuit breaker is installed on the distribution box through the guide rail 5. The guide rail 5 backpack accessory is provided with an outwardly protruding plug block 210, and is connected to the housing 1 through the cooperation of the plug block 210 and the slot 130; the guide rail 5 backpack accessory is provided with an assembly part for connecting the guide rail 5, and the assembly part is specifically a track groove 230 provided on the guide rail 5 backpack accessory, and the track groove 230 is slidably matched with the guide rail 5.

[0049] This communication backpack is provided with a slot 130 on the housing 1, and a plug block 210 corresponding to the slot 130 is provided on the guide rail 5 type backpack accessory. The guide rail 5 type backpack accessory is connected to the housing 1 through the cooperation of the plug block 210 and the slot 130, and the guide rail 5 type backpack accessory is provided with a track groove 230 for connecting the guide rail 5, so that the communication backpack and the circuit breaker can be installed on the same guide rail 5; compared with the installation method in the prior art in which the circuit breaker is fixed on the guide rail 5 and the communication backpack is fixed on one side of the circuit breaker, the installation position of the communication backpack relative to the circuit breaker can be more flexible, and the installation and removal of the communication backpack is also convenient. Moreover, the guide rail 5 type backpack accessory can be slidably installed on the guide rail 5 through the track groove 230 thereon, so that the installation position of the communication backpack can be flexible and adjustable.

[0050] like Figure 1-3 As shown, the shell 1 is a flat rectangular structure, and the shell 1 is a bilaterally symmetrical structural design, which allows the communication backpack to be used on the circuit breaker on both the left and right sides, and can expand the scope of use of the communication backpack. Furthermore, the shell 1 is spliced ​​by the upper shell 110 and the lower shell 120, and the upper shell 110 and the lower shell 120 are enclosed to form an installation cavity for accommodating the communication module; such a configuration can facilitate the installation of a circuit board with a communication module in the shell 1, and at the same time facilitate the positioning and installation of the circuit board in the shell 1; and during the injection molding process of the shell 1, there is no need for lateral core pulling, which reduces the processing difficulty of the mold required to manufacture the shell 1.

[0051] like Figure 1As shown, the housing 1 is integrally formed with a guide block 121 protruding outward and having an inverted trapezoidal cross section on a side perpendicular to the backpack attachment connected thereto, and guide posts 123 located on both sides of the guide block 121. The housing 1 is slidably fitted on the hanging groove of the side wall of the circuit breaker through the guide block 121 and the guide post 123, and can be compatible with the existing side-mounted installation method of the communication backpack on the side wall of the circuit breaker. Furthermore, a wiring hole is also provided on the guide block 121, and the wiring connected to the communication module is connected to the circuit breaker after passing through the wiring hole, and the wiring can be hidden, making the wiring method more beautiful. Moreover, the housing 1 of the communication backpack is small in size, and the housing 1 does not protrude from the surface of the circuit breaker frame after being installed on the circuit breaker frame, and does not exceed the length of the circuit breaker frame itself. In an optional embodiment, the housing 1 of the communication backpack can also share a shell with the housing 1 of the overload alarm trip module or other non-trip modules.

[0052] like Figure 1-3 As shown, there are two slots 130, which are arranged on the same long side of the outer periphery of the housing 1, and a socket is arranged at one end of the slot 130. The slot 130 includes a wide slot portion with a large width close to one end of the slot 132 and a narrow slot portion with a small width away from one end of the socket. The wide slot portion is square, and the narrow slot portion is dovetail-shaped. The transition position between the wide slot portion and the narrow slot portion is provided with a first limiting end face 133 arranged facing the slot 132. The slot bottom of the slot 130 is provided with a card slot 131 surrounded by the butt end faces of the upper shell 110 and the lower shell 120. In this way, there is no need to form the card slot 131 separately on the upper shell 110 or the lower shell 120, thereby reducing the difficulty of mold processing for manufacturing the upper shell 110 or the lower shell 120 of the desired shape, and avoiding deformation of the edge of the card slot 131 during demolding.

[0053] In this embodiment, an electric operating mechanism is provided on the housing of the circuit breaker, and the electric operating mechanism is connected to the wiring terminal installed on the housing 1 of the communication backpack through a wiring, and the wiring terminal is electrically connected to the communication module in the housing 1. Figure 4 As shown, the other long side of the housing 1 facing away from the slot 130 is provided with a plurality of data receiving ports 140, which can be used to communicate with external electronic devices, such as mobile phones supporting the OTG function, which can be interconnected through the OTG data line to realize the functions of telemetry, remote adjustment, remote signaling, and remote pulse. Furthermore, the other long side of the housing 1 facing away from the slot 130 is also provided with a status indicator hole, a baud rate knob adjustment hole, a status switching dial hole, and a reset button hole, so that one housing can be used for multiple purposes by replacing different labels.

[0054] The communication module is equipped with a DC / AC automatic switching circuit, which can be used in both DC and AC circuits. Specifically, when there is both AC and DC power input, the communication backpack can automatically turn off the DC power output; when there is only AC power input or only DC power input, the communication backpack can automatically switch the power supply mode.

[0055] like Figure 1 and Figure 5-8 As shown, the guide rail 5 backpack accessory is in the shape of a long strip, and the track groove 230 and the plug block 210 are respectively arranged on opposite sides of the guide rail 5 backpack accessory. The plug block 210 includes a head end matching the shape of the wide groove part of the slot 130 and a tail end matching the shape of the narrow groove part of the slot 130; the cross section of the head end is square, and the cross section of the tail end is inverted trapezoidal; the transition position between the head end of the plug block 210 and the tail end of the plug block 210 is provided with a second limiting end face 212 that matches the first limiting end face 133. A clamping block 211 protruding outward is provided on one side of the tail end of the plug block 210 facing the bottom of the slot 130, and the clamping block 211 is engaged with the clamping groove 131 to fix the plug block 210 on the slot 130. When the insert block 210 is inserted into the slot 130, the block 211 on the insert block 210 and the slot 131 at the bottom of the slot 130 can be further engaged to achieve the fixation between the housing 1 and the guide rail 5 backpack accessory, so that the guide rail 5 backpack accessory is more firmly and reliably fixed on the housing 1. Furthermore, the side of the block 211 facing the bottom of the slot 130 is provided with an inclined guide surface that facilitates the block 211 to slide at the bottom of the slot 130 until it slides into the slot 131. The setting of the inclined guide surface on the block 211 facilitates the insert block 210 to slide completely into the slot 131.

[0056] In a preferred implementation of the first embodiment of the present invention, the guide rail 5-type backpack accessory is composed of two guide rail 5-type components of the same shape joined together by rivets 220. Accordingly, a track groove 230 is formed on both guide rail 5-type components, half of the insert block 210 having the head end is formed on one of the guide rail 5-type components, and the other half of the insert block 210 having the clamping block 211 is formed on the other guide rail 5-type component. The guide rail 5-type backpack accessory with a more complex structure is designed as a structure composed of two guide rail 5-type components, and the special-shaped structures on the guide rail 5-type backpack accessory are respectively formed on different guide rail 5-type components by adopting a segmented manufacturing method, which can simplify the structure of a single guide rail 5-type component and thereby reduce the processing difficulty of the mold for forming the guide rail 5-type accessory 2. Furthermore, the interior of the guide rail 5-type backpack accessory is hollow, which saves materials for producing the guide rail 5-type backpack accessory and reduces costs.

[0057] like Figure 8As shown, the rail 5 type backpack accessory has a mounting groove for the spring clip 4 on one side of the track groove 230. After the spring clip 4 is installed in the mounting groove, the rail 5 type backpack accessory is elastically pressed against the rail 5. By loosening the spring clip 4, the mounting position of the rail 5 type backpack accessory on the rail 5 can be adjusted.

[0058] Embodiment 2

[0059] like Figure 9-13 The communication backpack shown in the figure includes a housing 1 and a fixed backpack accessory. The difference from the first embodiment is that the fixed backpack accessory is used to replace the guide rail 5 backpack accessory in the first embodiment.

[0060] The fixed backpack accessory is provided with an outwardly protruding plug block 210, and is connected to the shell 1 through the cooperation between the plug block 210 and the slot 130. The structure of the plug block 210 and the slot 130 is the same as that in the first embodiment, and will not be repeated here. The only difference is that there are two plug blocks 210 on the fixed backpack accessory. The fixed backpack accessory is in the shape of an elongated strip, and the two ends in the length direction of the fixed backpack accessory are provided with assembly parts for connecting to the guide rail 5, and the part of the assembly part extending outward relative to the shell 1 is provided with a mounting hole for connecting to the guide rail 5. The position of the mounting hole protrudes from the outside of the shell 1, which is convenient for locking the screws on the mounting hole, and convenient for fixing the fixed backpack accessory to the guide rail 5. Furthermore, the mounting hole is a waist-round hole 310. Such a setting can take into account the size specifications of the mounting holes on different guide rails, so that one guide rail can meet multiple size requirements.

[0061] like Figure 9-10 , Fig.13 As shown, the waist-round hole 310 at one end of the fixed backpack accessory is open, and the waist-round hole 310 at the other end is closed. This arrangement makes it convenient for operators to install the fixed backpack accessory on the guide rail.

[0062] This communication backpack is provided with a slot 130 on the shell 1, and an insert block 210 corresponding to the slot 130 is provided on the fixed backpack accessory. The fixed backpack accessory is connected to the shell 1 through the cooperation of the insert block 210 and the slot 130, and the fixed backpack accessory is provided with a mounting hole for connecting to the guide rail 5, so that the communication backpack and the circuit breaker can be installed on the same guide rail 5; the installation method of the communication backpack installed on the guide rail 5, compared with the installation method of the circuit breaker fixed on the guide rail 5 and the communication backpack fixed on one side of the circuit breaker in the prior art, can make the installation position of the communication backpack relative to the circuit breaker more flexible, and also facilitate the installation and removal of the communication backpack.

[0063] In summary, the communication backpack provided in the embodiment of the present invention has a slot 130 set on the shell 1 of the communication backpack, and a plug block 210 corresponding to the slot 130 is set on the guide rail 5 type backpack accessory or the fixed backpack accessory. The guide rail 5 type backpack accessory or the fixed backpack accessory is connected to the shell 1 through the cooperation of the plug block 210 and the slot 130. Different backpack accessories can be replaced as needed to achieve fixed or sliding installation of the communication backpack. Compared with the installation method in which the circuit breaker is fixed on the guide rail 5 and the communication backpack is fixed on one side of the circuit breaker in the prior art, the installation position of the communication backpack relative to the circuit breaker can be made more flexible, and the installation and disassembly of the communication backpack is also convenient, and it is also convenient to maintain the circuit breaker and facilitate the maintenance personnel to judge the circuit breaker status information.

[0064] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A communication backpack, characterized in that: include: A housing (1) is provided with an installation cavity for accommodating a communication module inside and a slot (130) outside; the communication module is connected to the circuit breaker via a cable extending out of the housing (1); the circuit breaker is installed on the distribution box via a guide rail (5); A backpack accessory, on which an outwardly protruding plug block (210) is provided, and is connected to the housing (1) through the cooperation between the plug block (210) and the slot (130); The backpack accessory is provided with an assembly portion for connecting to the guide rail (5); the assembly portion is a track groove (230) provided on the backpack accessory, and the track groove (230) is slidably matched with the guide rail (5).

2. The communication backpack according to claim 1, characterized in that: The backpack accessory is in the shape of an elongated strip, the assembly portion is arranged at two ends of the backpack accessory in the length direction, and a portion of the assembly portion extending outward from the shell (1) is provided with an installation hole for connecting to the guide rail (5).

3. The communication backpack according to claim 1, characterized in that: The slot (130) is arranged on the side wall of the housing (1); the slot (130) is dovetail-shaped; the insert block (210) is slidably mounted in the slot (130); a clamping groove (131) is provided at the bottom of the slot (130); a clamping block (211) protruding outward is provided on one side of the insert block (210) facing the bottom of the slot (130); the clamping block (211) is clamped with the clamping groove (131) to fix the insert block (210) on the slot (130).

4. The communication backpack according to claim 3, characterized in that: A side of the clamping block (211) facing the bottom of the slot (130) is provided with an inclined guide surface for facilitating the sliding of the inserting block (210) in the slot (130).

5. The communication backpack according to claim 3, characterized in that: A notch (132) is provided at one end of the slot (130), and the slot (130) comprises a wide slot portion close to the notch (132) and having a large width, and a narrow slot portion away from the notch (132) and having a small width, and the narrow slot portion is dovetail-shaped; a first limiting end face (133) facing the notch (132) is provided at a transition position between the wide slot portion and the narrow slot portion, and the plug block (210) is provided with a second limiting end face (212) that is limitedly matched with the first limiting end face (133).

6. The communication backpack according to claim 3, characterized in that: The housing (1) is formed by splicing an upper shell (110) and a lower shell (120); the installation cavity is enclosed between the upper shell (110) and the lower shell (120); and the slot (131) is formed by enclosing the butt end surfaces of the upper shell (110) and the lower shell (120).

7. The communication backpack according to claim 3, characterized in that: A guide block (121) protruding outward is connected to a side surface of the housing (1) perpendicular to the backpack accessory, the cross section of the guide block (121) being in an inverted trapezoidal shape, and the guide block (121) is slidably fitted in a hanging groove on a side wall of the circuit breaker; a wiring hole for wiring to pass through is provided on the guide block (121); and guide columns (123) located on both sides of the guide block (121) are also provided on the housing (1).

8. The communication backpack according to claim 1, characterized in that: A data receiving port (140) is provided on a side wall of the housing (1) facing away from the slot (130).

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