Multiple anti-misconnection combined junction box

Abstract

The invention discloses a multiple anti-misconnection combined junction box, which comprises a shell, and is characterized in that a current inflow passage, a current outflow passage, a first passage switch and a second passage switch are arranged in the shell; the two ends of the current inflow passage and the two ends of the current outflow passage are communicated with the two sides of the shell respectively to form four wiring holes. The first path switch is arranged on the current inflow path and is used for controlling the on-off of the whole current path; the current inflow path and the current outflow path form a gating short circuit connection through a second path switch; the shell is provided with two reserved jacks which are different from the wiring hole in direction, and the two reserved jacks are communicated with different point positions of the current path respectively. Three current paths in the prior art are simplified into a one-in and one-out current inflow path and a one-out current outflow path, the first path switch and the second path switch perform disconnection and short circuit on the current loop, and the reserved jack and the wiring hole are arranged in different directions of the shell, so that multiple misconnection prevention is realized, and the risk of miswiring is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of node connection devices for power distribution, and particularly to a multiple anti-misconnection combined junction box. Background Art

[0002] In existing junction boxes, a voltage path needs to be set for each phase, with one wiring hole at the upper and lower positions of each voltage path; and three current paths are set for each phase, with one wiring hole at the upper and lower positions of each current path. At the same time, one voltage path is switched on and off through a connecting piece; and the three current paths are cooperatively short-circuited through two connecting pieces.

[0003] Since different types of wiring holes are arranged side by side and the number of wiring holes is large, it is easy to connect to the wrong position during replacement or new installation. At the same time, the connecting pieces need to be fixed by screws, which is not only inconvenient to operate, but also there is a risk of screw idling or screw jamming during the operation, resulting in measurement errors and leaving potential safety hazards.

[0004] When on-site meter calibration needs to access the current loop through the series connection method, or when replacement needs to use a calibrator to replace the meter to pursue compensation for the meter running speed, not only most operators are unfamiliar with the operation method principle, but also it cannot be carried out when the original wiring method is not standardized (such as using current holes 1 and 3 on both the upper and lower sides, etc.); even if it can be carried out, the current wiring holes are arranged side by side with the normal path, and it is extremely easy to operate the wrong position of the connecting piece. Moreover, for these two special and necessary working conditions, the calibrator connector needs to be fixed with the screws of the combined junction box. If it is tightened lightly, the contact may be poor and the calibration accuracy will be affected; if it is tightened too much, it will cause mechanical damage to the wiring port of the meter calibrator. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to provide a multiple anti-misconnection combined junction box, which reduces the risk of miswiring and improves the wiring operation efficiency.

[0006] To solve the above technical problem, the technical solution adopted by the present invention is: A multiple anti-misconnection combined junction box includes a housing. An incoming current path, an outgoing current path, a first path switch, and a second path switch are arranged in the housing; both ends of the incoming current path and both ends of the outgoing current path respectively communicate with both sides of the housing and form four wiring holes; the first path switch is arranged on the incoming current path and is used to control the conduction and cutoff of the entire current path; the incoming current path and the outgoing current path are selectively connected through the second path switch to form a short-circuit connection; two reserved jacks with directions different from those of the wiring holes are arranged on the housing, and the two reserved jacks are respectively communicated with different points of the incoming current path.

[0007] The beneficial effects of the present invention are as follows: By simplifying the existing three current paths into an in-and-out current inflow path and a current outflow path, the risk of misconnection is greatly reduced; and by replacing the connection method of connecting pieces and screws with the first path switch and the second path switch, the wiring safety risk is reduced; at the same time, the first path switch functions as a total disconnection switch, and the second path switch functions as a total short-circuit switch, that is, the disconnection and short-circuit control of the current loop are realized through the first path switch and the second path switch, while the existing connecting pieces only play the role of short-circuiting two by two among the three paths; and by arranging the reserved jacks and wiring holes in different directions of the housing, the problem of incorrect wiring of different types is avoided; thus, multiple misconnection prevention measures are achieved to reduce the risk of miswiring while improving the wiring operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 FIG. is a schematic structural diagram of a multiple misconnection prevention combined wiring box in an embodiment of the present invention; Figure 2 FIG. is a top view of a multiple misconnection prevention combined wiring box in an embodiment of the present invention; Figure 3 FIG. is a wiring schematic diagram of a multiple misconnection prevention combined wiring box in an embodiment of the present invention; Figure 4 FIG. is a schematic structural diagram of the cover body of a multiple misconnection prevention combined wiring box in an embodiment of the present invention; Figure 5 FIG. is a current loop schematic diagram of a multiple misconnection prevention combined wiring box during meter replacement in an embodiment of the present invention; Figure 6 FIG. is a current loop schematic diagram of a multiple misconnection prevention combined wiring box when a current loop is connected in series in an embodiment of the present invention; Figure 7 FIG. is a current loop schematic diagram of a multiple misconnection prevention combined wiring box when using a calibration meter to measure electricity consumption in an embodiment of the present invention; LABEL DESCRIPTION: 1. Housing; 2. Current inflow path; 21. First sub-path; 22. Second sub-path; 3. Current outflow path; 4. First path switch; 5. Second path switch; 6. Three-phase voltage path; 7. Third path switch; 8. Terminal; 9. Cover body; 10. Mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0009] To describe in detail the technical content, the achieved objectives and the effects of the present invention, the following is described in conjunction with the embodiments and the accompanying drawings.

[0010] A multiple misconnection prevention combined wiring box includes a housing, and a current inflow path, a current outflow path, a first path switch and a second path switch are arranged in the housing; Both ends of the current inflow path and both ends of the current outflow path communicate with both sides of the housing respectively, and four wiring holes are formed; the first path switch is arranged on the current inflow path to control the conduction and cutoff of the entire current path; the current inflow path and the current outflow path can be selectively connected through the second path switch to form a short-circuit connection; two reserved jacks with directions different from those of the wiring holes are arranged on the housing, and the two reserved jacks communicate with different points of the current inflow path respectively.

[0011] As can be seen from the above description, the beneficial effects of the present invention are as follows: by simplifying the existing three current paths into a current inflow path and a current outflow path with one in and one out, the misconnection risk is greatly reduced; and by replacing the connection method of the connecting piece and the screw with the first path switch and the second path switch, the wiring safety risk is reduced; at the same time, the first path switch acts as a total cutoff switch, and the second path switch acts as a total short-circuit switch, that is, the first path switch and the second path switch are used to realize the disconnection and short-circuit control of the current loop, while the existing connecting piece only plays the role of short-circuiting two by two among the three paths; and the reserved jacks and the wiring holes are arranged in different directions on the housing to avoid the problem of different types of wiring errors; thus, multiple anti-misconnection is realized, the miswiring risk is reduced, and the wiring operation efficiency is improved.

[0012] Further, the current inflow path includes a first sub-path and a second sub-path; one end of the first sub-path communicates with the wiring hole and the reserved jack on the first side of the housing; one end of the second sub-path communicates with the wiring hole and the reserved jack on the second side of the housing; the other end of the first sub-path is selectively connected to the other end of the second sub-path through the first path switch; the other end of the second sub-path is also selectively connected to the current outflow path through the second path switch.

[0013] As can be seen from the above description, the current inflow path is divided into a first sub-path and a second sub-path, the first sub-path is connected to the second sub-path through the first path switch, and the second sub-path is connected to the current outflow path through the second path switch. Therefore, by controlling the first path switch and the second path switch, different circuit loops can be formed to realize different circuit functions.

[0014] Further, a three-phase voltage path and a third path switch are also arranged in the housing; both ends of the three-phase voltage path communicate with both sides of the housing and form six wiring holes; the third path switch is arranged on the three-phase voltage path to control the conduction and cutoff of the three-phase voltage path.

[0015] As can be seen from the above description, by setting the three-phase voltage path and the third path switch, the access of the three-phase voltage can be realized, and the on / off control of the three paths of voltage can be realized through the third path switch.

[0016] Further, each group of the current inflow path and the current outflow path corresponds to a group of the three-phase voltage paths.

[0017] As can be seen from the above description, by correspondingly setting the current inflow path and the current outflow path with the three-phase voltage path, each phase input can correspond to a group of current inflow path, current outflow path and three-phase voltage path, so as to realize the corresponding circuit control.

[0018] Further, three groups of the current inflow path and the current outflow path, and four groups of the three-phase voltage path are arranged in the housing.

[0019] As can be seen from the above description, by additionally setting a group of three-phase voltage paths, the additional connection requirements in the actual use process can be met; for example, when applied to a three-phase four-wire scenario, it is used to connect the neutral line.

[0020] Further, all the wiring holes on both sides of the housing are symmetrically arranged with the central axis of the width of the housing as the symmetry axis.

[0021] As can be seen from the above description, by aligning and arranging all the wiring holes on both sides of the housing, the wiring holes of each path form a corresponding relationship, effectively avoiding the problem of wrong connection.

[0022] Further, a wiring post is also arranged in the housing; one end of the wiring post is connected with the current inflow path or the current outflow path, and the other end of the wiring post is the reserved jack.

[0023] As can be seen from the above description, by connecting the wiring hole with the current inflow path or the current outflow path, and taking the other end of the wiring post as the reserved jack, that is, the height of the reserved jack is different from the height of the wiring hole, while avoiding the wrong connection of different types of wiring, the device can be more conveniently inserted into the reserved jack.

[0024] Further, the first path switch and the second path switch include a rocker switch or a boat switch.

[0025] As can be seen from the above description, using a rocker switch or a boat switch as the path switch can effectively realize the on / off control of each path.

[0026] Further, a cover body is also included; the cover body is arranged on the housing; the inner side of the cover body is attached to the first path switch and the second path switch in the normal state.

[0027] As described above, by attaching the inner side of the cover body to the first path switch and the second path switch in the normal state, it is possible to avoid large losses caused by undercounting of electricity due to the failure to set the first path switch and the second path switch to the normal state after new installation or replacement.

[0028] Furthermore, mounting holes are provided on the housing.

[0029] As described above, the housing can be sealed with lead through the mounting holes, improving the safety of the combined wiring box.

[0030] The multi-prevention misconnection combined wiring box provided by the present invention is used as an intermediate device for the electrical on-off of the voltage and current secondary circuits in devices such as three-phase watt-hour meters and terminals. The following is described through specific embodiments: Embodiment 1 Please refer to Figures 1 to 3 , a multi-prevention misconnection combined wiring box, including a housing 1. Inside the housing 1, there are a current inflow path 2, a current outflow path 3, a first path switch 4, and a second path switch 5. In an optional embodiment, the first path switch 4 and the second path switch 5 are switches with off and on functions. For example, the first path switch 4 and the second path switch 5 adopt toggle switches or rocker switches. By using switches instead of connecting pieces and screws, the time and effort for operating the screws and connecting pieces can be saved, and the switch function is intuitive without the need to consider the cooperation between the connecting piece and the wiring hole position. At the same time, without setting connecting piece screws, the risks of measurement errors and safety accidents caused by screw idling and jamming are also avoided. The two ends of the current inflow path 2 and the two ends of the current outflow path 3 respectively connect the two sides of the housing 1 and form four wiring holes. The first path switch 4 is arranged on the current inflow path 2 to control the on and off of the entire current path. The current inflow path 2 and the current outflow path 3 can be selectively connected through the second path switch 5 to form a short-circuit connection. There are two reserved jacks on the housing 1 with directions different from those of the wiring holes, and the two reserved jacks are respectively connected to different points of the current inflow path 2. Among them, a wiring post 8 is also arranged inside the housing 1. One end of the wiring post 8 is connected to the current inflow path 2 or the current outflow path 3, and the other end of the wiring post 8 is a reserved jack. That is, the adopted direct plug-in reserved jack is already connected in the main path, and there will be no situation where it is impossible to carry out the series connection to the meter. Moreover, the reserved jack is independent on the panel, without the need to consider the connecting piece cooperation, and the operation is intuitive. It is not only convenient and time-saving, but also more intuitive and simple, and will not cause mechanical damage to the connection head. At the same time, mounting holes 10 are provided on the housing 1.

[0031] Such as Figure 3As shown in the figure, the current inflow path 2 includes a first sub-path 21 and a second sub-path 22; one end of the first sub-path 21 is connected to the wiring hole and the reserved jack on the first side of the housing 1; one end of the second sub-path 22 is connected to the wiring hole and the reserved jack on the second side of the housing 1; the other end of the first sub-path 21 is selectively connected to the other end of the second sub-path 22 through the first path switch 4; the other end of the second sub-path 22 is also selectively connected to the current outflow path 3 through the second path switch 5.

[0032] A three-phase voltage path 6 and a third path switch 7 are also provided inside the housing 1; both ends of the three-phase voltage path 6 connect the two sides of the housing 1 and form six wiring holes; the third path switch 7 is arranged on the three-phase voltage path 6 to control the conduction and cutoff of the three-phase voltage path 6; and, each group of the current inflow path 2 and the current outflow path 3 corresponds to a group of the three-phase voltage path 6; at the same time, an additional group of the three-phase voltage path 6 is provided. As Figure 3 shown in the figure, three groups of the current inflow path 2 and the current outflow path 3, and four groups of the three-phase voltage path 6 are provided inside the housing 1. At the same time, all the wiring holes on both sides of the housing 1 are symmetrically arranged with the central axis of the width of the housing 1 as the axis of symmetry. Among them, since the positions of voltage and current wiring are fixed, the risk of wrong wiring can be greatly reduced; during the first inspection, re-inspection, etc., combined with wiring of different colors, the type of wrong connection can be judged very intuitively; it can also be combined with AI implanted into the existing APP to upgrade the digital function.

[0033] Please refer to Figure 4 , the multiple anti-wrong connection combined wiring box further includes a cover 9, and the cover 9 is arranged on the housing 1; the inner side of the cover 9 fits with the first path switch 4 and the second path switch 5 in the normal state; that is, the top of the first path switch 4 protrudes toward the conduction side and the top of the second path switch 5 protrudes toward the cutoff side. In the normal operation state, the top of the switch will be restricted by the fitting part of the cover 9 and cannot perform switch control anymore; if the top of the first path switch 4 protrudes toward the cutoff side or the top of the second path switch 5 protrudes toward the conduction side, it cannot fit with the cover 9, thus reminding the construction personnel that the multiple anti-wrong connection combined wiring box is not in the normal operation state at this time; avoiding the frequent occurrence of unopened current connecting pieces after new installation or replacement, resulting in large losses caused by undercounting of electricity. After replacement or completion of the calibration work, the last link of sealing with a lead seal can verify again whether the voltage and current of the wiring box are both in the normal operation state, realizing the second anti-wrong connection.

[0034] The working principle of the above multiple anti-wrong connection combined wiring box is as follows: Please refer to Figure 3 , during normal operation, the first path switch 4 (vertical switch) is turned on, and the second path switch 5 (horizontal switch) is turned off. At this time, the current flows in from the current inflow path 2 and flows out from the current outflow path 3.

[0035] Please refer to Figure 5 , when changing the meter, the first path switch 4 and the second path switch 5 are both turned on. At this time, the current loop is short-circuited.

[0036] Please refer to Figure 6 , when it is necessary to connect the current loop in series with the meter calibrator, the first path switch 4 and the second path switch 5 are both turned off; and the input end of the meter calibrator is connected to the input end of the current inflow path 2, and the output end of the meter calibrator is connected to the output end of the current inflow path 2. At this time, the current flows into the junction box from the lower left hole, then flows into the meter calibrator through the reserved jack, returns to the junction box from the upper reserved jack after passing through the meter calibrator, and flows out of the junction box from the upper left hole to the meter.

[0037] Please refer to Figure 7 , for extra-large users during the peak electricity consumption period, in order to avoid excessive power loss, a meter calibrator is often used to replace the meter to measure the electricity consumption during meter change, and the electricity consumption will be supplemented later; the first path switch 4 is turned off and the second path switch 5 is turned on. At this time, the current flows into the junction box from the lower left hole, enters the meter calibrator at the lower reserved jack, returns to the junction box from the upper reserved jack after passing through the meter calibrator, and directly flows out of the junction box from the lower right hole along the second path switch 5, that is, the meter is short-circuited.

[0038] In summary, the multiple anti-misconnection combined junction box provided by the present invention simplifies the whole set of connecting pieces, screws and the third current path into a straightforward one-in-one-out current loop, greatly reducing the misconnection risk and safety risk, and realizing the first anti-misconnection; and by controlling the connection mode of the current inflow path and the current outflow path through the first path switch and the second path switch, different circuit functions can be realized in combination with the terminal block design, and the misconnection between the wiring hole and the reserved hole can be prevented; in addition, the cover of the junction box is designed to be a fitting type, that is, the corresponding switch state will be fixed during normal operation, and the space where the switch protrudes out of the junction box plane is limited, so that after the replacement or the completion of the calibration work, the last link of sealing with lead can verify again whether the voltage and current of the junction box are both in the normal operation state, realizing multiple anti-misconnections.

[0039] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A multiple anti-misconnection combined junction box, characterized in that It includes a housing, and an electric current inflow path, an electric current outflow path, a first path switch and a second path switch are arranged inside the housing; Both ends of the electric current inflow path and both ends of the electric current outflow path communicate with both sides of the housing respectively, and four wiring holes are formed; The first path switch is arranged on the electric current inflow path and is used to control the conduction and cut-off of the entire electric current path; A short-circuit connection can be selectively established between the electric current inflow path and the electric current outflow path through the second path switch; Two reserved jacks with directions different from those of the wiring holes are arranged on the housing, and the two reserved jacks are respectively communicated with different points of the electric current inflow path.

2. The multi-prevention misconnection combined wiring box according to claim 1, characterized in that The electric current inflow path includes a first sub-path and a second sub-path; One end of the first sub-path communicates with the wiring hole and the reserved jack on the first side of the housing; One end of the second sub-path communicates with the wiring hole and the reserved jack on the second side of the housing; The other end of the first sub-path is selectively connected to the other end of the second sub-path through the first path switch; The other end of the second sub-path is also selectively connected to the electric current outflow path through the second path switch.

3. The multi - error - proof joint junction box according to claim 1, characterized in that, A three-phase voltage path and a third path switch are also arranged inside the housing; Both ends of the three-phase voltage path communicate with both sides of the housing, and six wiring holes are formed; The third path switch is arranged on the three-phase voltage path and is used to control the conduction and cut-off of the three-phase voltage path.

4. The multi - anti - misconnection combined junction box according to claim 3, characterized in that, Each group of the electric current inflow path and the electric current outflow path corresponds to a group of the three-phase voltage path.

5. The multi-prevention misconnection combined wiring box according to claim 4, characterized in that Three groups of the electric current inflow path and the electric current outflow path, and four groups of the three-phase voltage path are arranged inside the housing.

6. The multi-prevention misconnection combined junction box according to claim 1 or 3, characterized in that, All the wiring holes on both sides of the housing are symmetrically arranged with the central axis of the housing width as the axis of symmetry.

7. A multiple anti-misconnection combined wiring box according to claim 1 or 3, characterized in that A terminal post is also arranged inside the housing; One end of the terminal post is connected to the electric current inflow path or the electric current outflow path, and the other end of the terminal post is the reserved jack.

8. The multi-prevention misconnection combined junction box according to claim 1, characterized in that, The first path switch and the second path switch include a rocker switch or a boat switch.

9. The multi-prevention wrong connection combined wiring box according to claim 1, characterized in that, It also includes a cover body; The cover body is arranged on the housing; The inner side of the cover body is attached to the first path switch and the second path switch in the normal state.

10. The multi - error - proof connection combined junction box according to claim 1, characterized in that, Mounting holes are arranged on the housing.

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