Plug-in type junction box for electric energy metering

Abstract

The invention belongs to the technical field of circuit wiring devices, particularly relates to an electric energy metering plug-in type wiring box, and aims to solve the problem that in the prior art, when two adjacent wiring blocks in a wiring box are electrically connected, a sliding sheet is adopted to be matched with a bolt, so that accidental sliding is easily caused, and then unnecessary electrical connection is caused. According to the scheme, the box comprises a box body which is in a long-strip plate shape on the whole, equal-thickness frames are reserved at the positions, close to the edges, of the upper side and the lower side of the box body, and the box body is divided into three congruent short circuit areas and four wiring areas; and the short circuit areas and the wiring areas are distributed alternately. According to the invention, a circuit can be disconnected only by shifting the swing feeler lever towards the side where the insulating stop block is located during wiring, and the end part of the swing feeler lever can be tightly clamped on the insulating stop block under the action of the tension spring I after disconnection, so that poor line contact or contact with other contacts caused by slight mistaken touch is avoided; and the safety and the mistaken touch prevention performance during operation are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit wiring devices, and in particular to an electric energy metering plug-in wiring box. Background Art

[0002] At present, the commonly used special junction box for electric energy metering is also called a combined junction box. Its structure basically includes a box body and a box cover. The box body has voltage terminals, current terminals and connecting slides; its connection method is that the voltage of the secondary circuit of the voltage transformer and the current of the secondary circuit of the current transformer are respectively connected to the electric energy meter and the load management terminal through the voltage terminals and current terminals of the electric energy metering junction box, so that the voltage circuits of the junction box, the electric energy meter and the load management terminal are connected in parallel, and the current circuits are connected in series.

[0003] Since the wiring block used for voltage wiring in the wiring box in the prior art is formed by screwing a rectangular wiring block and a connecting bolt together, the connecting bolts of the corresponding voltage wiring blocks on both sides of the box body are connected together with connecting slides and screws during wiring. In this way, during the use of the wiring box, the connection between the connecting bolts and the rectangular connecting block is prone to loosening, resulting in complicated wiring and inspection; therefore, we propose a new plug-in wiring box that can reduce bolt operation to improve the efficiency of installation and replacement detection. Summary of the invention

[0004] In view of the technical problem that the slide and bolt used in the prior art for electrically connecting two adjacent junction blocks in a junction box are prone to accidental sliding, thereby causing unnecessary electrical connection, the present invention adopts the following technical solution: A plug-in junction box for electric energy metering, comprising a box body in the shape of an elongated plate as a whole, with frames of equal thickness reserved near the edges on the upper and lower sides of the box body, and the box body is divided into three equal short-circuit areas and four wiring areas; the short-circuit areas and the wiring areas are alternately distributed, and regional partition bars and main regional baffles are reserved between the short-circuit areas and the wiring areas, the regional partition bars and the main regional baffles are respectively located on the upper and lower sides of the box body, and rectangular long holes symmetrical to each other are respectively opened at the two ends of the wiring area of ​​the box body and the four corners of the short-circuit area, the number of rectangular long holes in a single combined unit is six, and the short-circuit area is provided with two symmetrical rectangular small holes between the four rectangular long holes, and the two rectangular small holes are respectively clamped with intermediate holes symmetrical to each other. Terminal 2, two rectangular long holes in a diagonal relationship are respectively clamped with terminal 2 which is symmetrical with the center, and the remaining four rectangular long holes are clamped with terminal 1; the short-circuit area surface of the box body is located between the two middle terminals 2 and is rotatably connected to two swing contact rods that can rotate in a symmetrical manner; and a tension spring 1 is provided at one end of the swing contact rod away from the middle terminal 2, and a straight tube slip ring is fixed at the other end of the tension spring 1, and a horizontally extending wear-resistant slide bar is inserted in the straight tube slip ring, and the wear-resistant slide bar is located between the rotation center line of the swing contact rod and the middle terminal 2, and a limiting slot is reserved at one end of the terminal 2 close to the center of the short-circuit area, and an insulating block symmetrical to the shape of the limiting slot is fixed on the other side of the short-circuit area.

[0005] A further configuration is that a partition is fixed in the middle of the short-circuit zone, and the partition separates the two swing contact rods in the same zone, both ends of the wear-resistant sliding rod are fixed with herringbone brackets, and the top of the herringbone bracket is reserved with a socket compatible with the wear-resistant sliding rod; the circumferential outer wall of the wear-resistant sliding rod is provided with locking sections near both ends, and the circumferential outer wall of the straight tube slip ring is provided with ordinary screw holes compatible with the position of the locking sections, and positioning screws are screwed in the ordinary screw holes; by providing a wear-resistant sliding rod with a locking section, the positioning screws can be tightened by hand after the switching is completed to form double protection, which is more effective in preventing the swinging contact rod from shaking.

[0006] A further configuration is that the bottom ends of the two intermediate terminals 2 are slidably plugged with terminal sliders 1, and the bottom ends of all the wiring terminals 1 and the wiring terminals 2 are slidably plugged with terminal sliders 2; the lower surfaces of the wiring terminal 1, the wiring terminal 2 and the intermediate terminal 2 are all provided with an annular groove 1; the upper surfaces of the terminal sliders 1 and the terminal sliders 2 are all provided with an annular groove 2 that is combined with the annular groove 1 to form a circular hole; the upper surfaces of the wiring terminal 1, the wiring terminal 2 and the intermediate terminal 2 are all provided with vertical self-locking screw holes that are connected to the annular groove 1, and the self-locking screw holes are self-locking. A clamping bolt is threaded in each of the locking screw holes; the two terminal sliders 1 are fixedly connected to the same connecting rod 2 by bolts, and the four terminal sliders 2 on both sides of the connecting rod 2 are electrically connected to two parallel connecting rods 1, and the connecting rods 1 and 2 are both made of copper sheets; when in use, it is only necessary to loosen the clamping bolt first, then fold the stripped wire end in half, and then insert it into the corresponding annular groove 1, and then screw in the clamping bolt. Since the annular groove 1 and the annular groove 2 are provided, contact loosening can be effectively prevented.

[0007] A further configuration is that the ends of the detection area close to the two middle terminals 2 are respectively provided with shaft sleeve holes 1 which are symmetrically distributed with respect to the center, and wear-resistant metal sleeves are embedded in the two shaft sleeve holes 1, connecting shafts are rotatably sleeved in the two wear-resistant metal sleeves, and the top ends of the connecting shafts are welded and fixed to the lower surface of one end of the swing contact rod; the lower surfaces of the connecting shafts are electrically connected with flexible wiring 2; the other end of the flexible wiring 2 is electrically connected to the end of the terminal slider 1 on the side; a spring hook is fixed to the end of the upper surface of the swing contact rod away from the connecting shaft, and the end of the tension spring 1 away from the straight tube slip ring is sleeved on the spring hook; it can be more convenient during installation, and the compact structure is easy to troubleshoot.

[0008] A further configuration is that end fixing plates are reserved at both ends of the box body, and internal threaded sleeves are embedded on the end fixing plates. The circumferential outer wall of the internal threaded sleeve is reserved with anti-detachment barbs, which can make the connection between the internal threaded sleeve and the box body of the plastic product tighter during use, thereby allowing the overall box body to be fixed more tightly and permanently.

[0009] A further configuration is that a plurality of wire through-holes of equal height are provided at the lower surface of the frame close to the box body, and the positions of the wire through-holes correspond to the wiring positions of the corresponding terminal one, the middle terminal two and the wiring terminal two; and a marking groove is provided on the upper surface of each wire through-hole on the outer side of the frame, so as to facilitate numbering and marking when plugging in wires.

[0010] A further configuration is that a small area baffle is fixed at the junction of the short-circuit area and the wiring area on the lower surface of the box body, and thickened baffles are reserved on both sides of the long sides of the rectangular long hole and the rectangular small hole on the lower surface of the box body; anti-slip ridges are reserved on both sides of the wiring terminal 1, the wiring terminal 2 and the intermediate terminal 2 near the bottom, and limiting grooves matched with the anti-slip ridges are reserved on both sides of the top of the terminal slider 1 and the terminal slider 2; a rectangular notch is opened on the inner side of the frame near the end of the terminal slider 1, and the rectangular notch tightly clamps the terminal slider 1; through the setting of the limiting groove and anti-slip ridge, there is no need to set a tray at the bottom of the box body to fix it during use, so that the bottom of the box body can be kept empty, thereby improving the heat dissipation effect of the device.

[0011] A further configuration is that a second shaft sleeve hole is opened at the end of one of the rectangular long holes in the wiring area, and a sliding bearing is embedded in the second shaft sleeve hole, a movable metal shaft is rotatably connected in the sliding bearing, and a swing plug strip is fixed to the top of the movable metal shaft, and an arrow-shaped wear-resistant plug is reserved at one end of the side of the swing plug strip away from the movable metal shaft, and a plug hole is opened at the end of the wiring area of ​​the box body near the wear-resistant plug, and a fixing rod is fixedly plugged in the plug hole, a metal support block is welded to the top of the fixing rod, and a semi-arc groove matching the wear-resistant plug is opened on the side of the metal support block; the wiring area is near the metal Two parallel strip holes are provided at the supporting block, and the upper surfaces of the two strip holes are slidably connected with the same clamping slide block, and a clamping groove symmetrical to the semi-arc groove is provided on the side of the clamping slide block close to the semi-arc groove; two rectangular inserts are reserved at the bottom end of the clamping slide block, and the same anti-slipping card plate is fixed on the rectangular inserts through the corresponding strip holes, and symmetrical L-shaped slide rails are fixed on both sides of the anti-slipping card plate on the lower surface of the box body; a spring clamping groove is provided on the side of the clamping slide block away from the clamping groove, and a clamping spring is fixed in the spring clamping groove; a spring retaining block is fixed on the end of the clamping spring away from the clamping slide block.

[0012] A further configuration is that a wiring sleeve is sleeved on the bottom end of the fixing rod, and a hard-wired wire C is welded and fixed to the bottom end of the wiring sleeve, and the end of the hard-wired wire C away from the wiring sleeve is fixed to the end of a terminal slider 2 closest to the wiring area; the bottom end of the movable metal shaft is electrically connected to a flexible wire 1, and the end of the flexible wire 1 away from the movable metal shaft is fixedly connected to the end of another terminal slider 2. By setting up the flexible wire 1, when the swinging plug strip swings, that is, when the connection is disconnected or connected, it can be ensured that the bottom end of the movable metal shaft maintains electrical connection with the terminal slider 2 at the end.

[0013] A further arrangement is that the same arc-shaped slide rail is inserted between the regional partition bars on both sides of the swing plug-in bar, and the opening of the arc-shaped slide rail faces the movable metal shaft and contains the movable metal shaft on the inner arc side, and the outer wall of the arc-shaped slide rail is slidably sleeved with an arc-shaped slide sleeve; a toggle rod is fixed to the end of the upper surface of the swing plug-in bar away from the movable metal shaft, and the same reset spring is fixed between the toggle rod and the outer wall of the arc-shaped slide sleeve; an embedded magnet is embedded in the outer wall of the arc-shaped slide sleeve, and a magnet column that attracts the embedded magnet is fixed to the side of the regional partition bar near the end of the arc-shaped slide rail.

[0014] The beneficial effects of the present invention are: 1. By setting a swing contact rod tightened by a tension spring 1, and cooperating with a wiring terminal 2 which can contact the swing contact rod and has a limiting notch, the circuit can be disconnected by simply moving the swing contact rod to the side where the insulating block is located during wiring. After disconnection, the end of the swing contact rod will be tightly stuck on the insulating block under the action of the tension spring 1, and will not cause poor circuit contact or contact with other contacts due to a slight accidental touch, which greatly improves the safety during operation and the anti-accidental touch performance.

[0015] 2. By setting the limiting sliding groove and the anti-slip ridge, the more the spiral wire is screwed downward, the tighter the contact between the two surfaces of the annular groove at the bottom of the spiral wire is. When in use, there is no need to set a tray at the bottom of the box to fix it, so that the bottom can remain empty, thereby improving the heat dissipation effect of the device.

[0016] 3. By providing a clamping slider with a clamping groove, the wear-resistant plug at the end of the swinging plug strip can be tightly fixed in cooperation with the metal bracket during normal wiring, providing a continuous pre-tightening pushing force and maintaining a lasting electrical connection.

[0017] 4. By setting a reset tension spring hung on the toggle rod, the wear-resistant plug at the end of the swing plug strip can be tightly pulled and fixed in the clamping groove when it is plugged in place, and the end of the swing plug strip can be firmly away from the metal bracket after the wear-resistant plug is disconnected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the bottom structure of the present invention; Figure 3 It is a schematic diagram of the overall structure of a single combined unit in the present invention; Figure 4 It is a schematic diagram of the bottom structure of a single combined unit in the present invention; Figure 5 It is a schematic diagram of the box structure of a single combined unit in the present invention; Figure 6It is a schematic diagram of the bottom structure of the box body of a single combined unit in the present invention; Figure 7 It is a structural schematic diagram of the wiring mechanism in the present invention; Figure 8 It is a structural schematic diagram of the short-circuit mechanism in the present invention; Fig. 9 It is a schematic diagram of the top view of a single combined unit in the present invention; Fig.10 For the present invention Fig. 9 Schematic diagram of the cross-sectional structure along line AA; Fig.11 It is an exploded bottom view of three types of connecting terminals in the present invention; Fig.12 It is an exploded top view of three types of terminal blocks in the present invention; Fig.13 It is a schematic diagram of the exploded structure of the composite wiring shaft 1 in the present invention; Fig.14 It is a schematic diagram of the explosion structure of the pressing slider in the present invention.

[0019] In the figure: 1. Box body; 101. End fixing plate; 102. Marking groove; 103. Wire penetration; 104. Area separation bar; 105. Rectangular notch; 106. Main area baffle; 107. Small area baffle; 108. L-shaped slide rail; 109. Bushing hole 1; 110. Rectangular long hole; 111. Rectangular small hole; 112. Bushing hole 2; 113. Plug hole; 114. Strip hole; 115. Thickened baffle; 2. Wiring terminal 1; 3. Wiring terminal 2; 4. Tightening spring; 5. Intermediate terminal 2; 6. Straight tube slip ring; 7. Swinging contact rod; 701. Connecting shaft rod; 8. Wear-resistant slide rod; 801. Locking Section; 9, herringbone bracket; 10, insulating block; 11, partition; 12, spring hook; 13, tension spring 1; 14, magnet column; 15, embedded magnet; 16, arc-shaped sliding sleeve; 17, arc-shaped sliding rail; 18, reset tension spring; 19, metal support block; 20, spring block; 21, pressing slider; 2101, clamping groove; 22, connecting rod 1; 23, connecting rod 2; 24, terminal slider 1; 25, terminal slider 2; 26, swing plug strip; 27, toggle rod; 28, flexible wiring 1; 29, hard-wired wire C; 30, anti-dropping card plate; 31, flexible wiring 2; 32, wear-resistant metal sleeve; 33, annular groove 1. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In this embodiment, refer to Figure 1-14 , an electric energy metering plug-in junction box, comprising a box body 1 in the shape of an elongated plate as a whole, with equal-thickness frames reserved near the edges of the upper and lower sides of the box body 1, and the box body 1 is divided into three equal short-circuit areas and four wiring areas, and the wiring areas are in the shape of narrow vertical strips; the short-circuit areas and the wiring areas are alternately distributed, and regional partition bars 104 and main regional baffles 106 are reserved between the short-circuit areas and the wiring areas, and the regional partition bars 104 and the main regional baffles 106 are respectively located on the upper and lower sides of the box body 1, and the two ends of the wiring area of ​​the box body 1 and the four corners of the short-circuit area are respectively opened with mutual Symmetrical rectangular long holes 110; wherein a short-circuit area and an adjacent wiring area form a combined unit, the number of rectangular long holes 110 in a single combined unit is six, the short-circuit area is located between the four rectangular long holes 110 and has two mutually symmetrical rectangular small holes 111, the two rectangular small holes 111 are respectively clamped with mutually centrally symmetrical middle terminals 5, the two diagonally-related rectangular long holes 110 are respectively clamped with centrally symmetrical wiring terminals 2 3, and the remaining four rectangular long holes 110 are all clamped with wiring terminals 1 2; The short-circuit area surface of the box body 1 is located between the two middle terminals 5 and is rotatably connected to two swing contact rods 7 that can rotate in a centrally symmetrical manner; and the end of the swing contact rod 7 away from the middle terminal 5 is provided with a tension spring 13, and the other end of the tension spring 13 is fixed with a straight tube slip ring 6, and a horizontally extending wear-resistant slide rod 8 is inserted in the straight tube slip ring 6, and the wear-resistant slide rod 8 is located between the rotation center line of the swing contact rod 7 and the middle terminal 2 5, and a limiting notch is reserved at one end of the wiring terminal 2 3 close to the center of the short-circuit area, and an insulating block 10 symmetrical to the shape of the limiting notch is fixed on the other side of the short-circuit area; Specifically, by setting a swing contact rod 7 tightened by a tension spring 13, in conjunction with a wiring terminal 2 3 that can contact the swing contact rod 7 and has a limiting groove, the circuit can be disconnected by simply moving the swing contact rod 7 toward the side where the insulating block 10 is located during wiring. After disconnection, the end of the swing contact rod 7 will be tightly stuck on the insulating block 10 under the action of the tension spring 13, and will not cause poor circuit contact or contact with other contacts due to a slight accidental touch, thereby greatly improving the safety during operation and the anti-accidental touch performance.

[0022] In the present invention, a partition 11 is fixed in the middle of the short-circuit zone, and the partition 11 separates the two swing contact rods 7 in the same zone, and the two ends of the wear-resistant slide bar 8 are fixed with herringbone brackets 9, and the top of the herringbone brackets 9 is reserved with a socket compatible with the wear-resistant slide bar 8; the circumferential outer wall of the wear-resistant slide bar 8 is provided with locking cut surfaces 801 near both ends, and the circumferential outer wall of the straight tube slip ring 6 is provided with an ordinary screw hole compatible with the position of the locking cut surface 801, and a positioning screw is screwed in the ordinary screw hole; by providing the wear-resistant slide bar 8 with a locking cut surface 801, the positioning screw can be tightened by hand after the switching is completed to form double protection, so as to more effectively prevent the swing contact rod 7 from shaking.

[0023] Please refer to Figure 1 , Figure 3-Figure 6 , Figure 8 , the bottom ends of the two intermediate terminals 25 are slidably plugged with terminal sliders 1, and the bottom ends of all the wiring terminals 1 and wiring terminals 23 are slidably plugged with terminal sliders 25; the lower surfaces of the wiring terminals 1, 2, 3 and the intermediate terminal 25 are all provided with an annular groove 133; the upper surfaces of the terminal sliders 124 and the terminal sliders 25 are all provided with an annular groove 2 that is combined with the annular groove 133 to form a circular hole; the upper surfaces of the wiring terminals 12, 23 and the intermediate terminal 25 are all provided with vertical self-locking screw holes that pass through the annular groove 133, and the self-locking screw holes are all screwed with clamping bolts; the two terminal sliders 124 are fixedly connected with the same connecting rod 23 by bolts, and the four terminal sliders 25 on both sides of the connecting rod 23 are electrically connected with two parallel connecting rods 122, and the connecting rod 122 and the connecting rod 23 are both made of copper sheets.

[0024] Specifically, when using, you only need to loosen the clamping bolt first, then fold the stripped wire end in half, insert it into the corresponding annular groove 1 33, and then screw in the clamping bolt. Since the annular groove 1 33 and the annular groove 2 are provided, contact loosening can be effectively prevented.

[0025] Please refer to 3. Figure 5-Figure 6 , Figure 8 , the ends of the detection area near the two middle terminals 25 are respectively provided with shaft sleeve holes 109 which are symmetrically distributed with respect to the center, and the two shaft sleeve holes 109 are both embedded with wear-resistant metal sleeves 32, and the two wear-resistant metal sleeves 32 are both rotatably sleeved with connecting shafts 701, and the top of the connecting shafts 701 is welded and fixed to the lower surface of one end of the swing contact rod 7; the lower surface of the connecting shaft 701 is electrically connected with a flexible wiring 2 31; the other end of the flexible wiring 2 31 is electrically connected to the end of the terminal slider 24 on the side; a spring hook 12 is fixed to the end of the upper surface of the swing contact rod 7 away from the connecting shaft 701, and the end of the tension spring 13 away from the straight tube slip ring 6 is sleeved on the spring hook 12; it can be more convenient during installation, and the compact structure is convenient for troubleshooting.

[0026] Please refer to Figure 1-Figure 2 Both ends of the box body 1 are reserved with end fixing plates 101, and the end fixing plates 101 are embedded with internal thread sleeves, and the circumferential outer wall of the internal thread sleeve is reserved with anti-detachment barbs, which can make the connection between the internal thread sleeve and the box body 1 of the plastic product tighter during use, and then the overall box body 1 can be fixed more tightly and permanently.

[0027] Please refer to Figure 1-Figure 2 and Fig.12 A plurality of wire through holes 103 of equal height are provided on the lower surface of the frame near the box body 1, and the positions of the wire through holes 103 correspond to the wiring positions of the corresponding terminal 1 2, the middle terminal 2 5 and the terminal 2 3; and a marking groove 102 is provided on the upper surface of each wire through hole 103 on the outer side of the frame, so as to facilitate numbering and marking when plugging in wires.

[0028] Please refer to Figure 4-Figure 6 A small area baffle 107 is fixed at the junction of the short-circuit area and the wiring area on the lower surface of the box body 1, and thickened baffles 115 are reserved on both sides of the long sides of the rectangular long hole 110 and the rectangular small hole 111 on the lower surface of the box body 1; anti-slip ridges are reserved on both sides of the wiring terminal 1 2, the wiring terminal 2 3 and the intermediate terminal 2 5 near the bottom, and limiting grooves matching the anti-slip ridges are reserved on both sides of the top of the terminal slider 1 24 and the terminal slider 2 25; a rectangular notch 105 is opened on the inner side of the frame near the end of the terminal slider 1 24, and the rectangular notch 105 tightly clamps the terminal slider 1 24; through the set limiting grooves and anti-slip ridges, there is no need to set a tray at the bottom of the box body 1 to fix it during use, so that the bottom of the box body 1 remains empty, thereby improving the heat dissipation effect of the device.

[0029] Please refer to Figure 3-Figure 7A second sleeve hole 112 is provided at the end of one of the rectangular long holes 110 in the wiring area, and a sliding bearing is embedded in the second sleeve hole 112, a movable metal shaft is rotatably connected in the sliding bearing, and a swing plug strip 26 is fixed to the top of the movable metal shaft, and an arrow-shaped wear-resistant plug is reserved at one end of the side of the swing plug strip 26 away from the movable metal shaft, and a plug hole 113 is provided at the end of the wiring area of ​​the box body 1 near the wear-resistant plug, and a fixing rod is fixedly plugged in the plug hole 113, a metal support block 19 is welded to the top of the fixing rod, and a semi-arc groove matching the wear-resistant plug is provided on the side of the metal support block 19; two parallel strip holes 114 are provided in the wiring area near the metal support block 19, and the upper surfaces of the two strip holes 114 are slidably connected with the same pressing slider 21, and the pressing slider 2 A snap-in groove 2101 symmetrical to the semi-arc groove is provided on one side close to the semi-arc groove; two rectangular inserts are reserved at the bottom end of the pressing slider 21, and the same anti-dropping card plate 30 is fixed to the rectangular inserts through the corresponding bar-shaped holes 114, and symmetrical L-shaped slide rails 108 are fixed to the two sides of the anti-dropping card plate 30 on the lower surface of the box body 1; a spring snap-in groove is provided on the side of the pressing slider 21 away from the snap-in groove 2101, and a pressing spring 4 is fixed in the spring snap-in groove; a spring stopper 20 is fixed to the end of the pressing spring 4 away from the pressing slider 21; by providing the pressing slider 21 with the snap-in groove 2101, the wear-resistant plug at the end of the swinging plug strip 26 can be tightly fixed in cooperation with the metal support block 19 during normal wiring, providing a continuous pre-tightening pushing force and maintaining a lasting electrical connection.

[0030] Please refer to Figure 4 The bottom end of the fixed rod is sleeved with a wiring sleeve, and a hard-wired wire C29 is welded and fixed to the bottom end of the wiring sleeve, and the end of the hard-wired wire C29 away from the wiring sleeve is fixed to the end of a terminal slider 25 closest to the wiring area; the bottom end of the movable metal shaft is electrically connected to a soft wire 1 28, and the end of the soft wire 1 28 away from the movable metal shaft is fixedly connected to the end of another terminal slider 25. By setting the soft wire 1 28, when the swinging plug strip 26 swings, that is, when the connection is disconnected or connected, it can be ensured that the bottom end of the movable metal shaft maintains electrical connection with the terminal slider 25 at the end.

[0031] Please refer to Figure 3-Figure 4 , Figure 7 and Fig. 9The same arc-shaped slide rail 17 is inserted between the regional partition bars 104 on both sides of the swing plug-in bar 26, and the opening of the arc-shaped slide rail 17 faces the movable metal shaft and contains the movable metal shaft on the inner arc side, and the outer wall of the arc-shaped slide rail 17 is slidably sleeved with an arc-shaped slide sleeve 16; a toggle rod 27 is fixed to the end of the upper surface of the swing plug-in bar 26 away from the movable metal shaft, and a same reset tension spring 18 is fixed between the toggle rod 27 and the outer wall of the arc-shaped slide sleeve 16; An embedded magnet 15 is embedded in the outer wall, and a magnet column 14 that attracts the embedded magnet 15 is fixed to the side of the regional partition strip 104 near the end of the arc-shaped slide rail 17; by setting a reset tension spring 18 hung on the toggle rod 27, the wear-resistant plug at the end of the swing plug strip 26 can be tightly pulled and fixed in the clamping groove 2101 when it is plugged into place, and the end of the swing plug strip 26 can also be firmly away from the metal support block 19 after the wear-resistant plug is disconnected.

[0032] When the device is in use, first insert the three-phase voltage wires from the wire through holes 103 at the bottom of the first three wiring areas in sequence. Before insertion, just loosen the clamping bolt first, then fold the stripped wire end in half until it is inserted into the corresponding annular groove 1, and then screw in the clamping bolt; the wire through hole 103 at the other end is connected to the ammeter, and the last group of wiring areas is connected to the neutral line; the short-circuit area is connected to the wire through holes 103 corresponding to the second and third marked grooves 102 below, and the first and third corresponding wire through holes 103 above; after all the wires are connected, close the swing plug strip 26 of each wiring area, that is, turn the toggle switch to close the swing plug strip 26. Rod 27, insert the wear-resistant plug between the semi-arc groove of the metal support block 19 and the clamping groove 2101 that presses against the slider 21; when it is necessary to short-circuit the circuit in the short-circuit zone, the swing contact rod 7 tightened by the tension spring 13 is provided, and cooperates with the wiring terminal 2 3 that can contact with it and has a limiting groove. When wiring, it is only necessary to push the swing contact rod 7 to the side where the insulating stopper 10 is located to disconnect the circuit, and after disconnection, the end of the swing contact rod 7 will be tightly clamped on the insulating stopper 10 under the action of the tension spring 13, and will not cause poor circuit contact or contact with other contacts due to slight accidental touch, thereby improving the safety during operation and the anti-accidental touch performance.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric energy metering plug-in junction box, comprising a box body (1) in the shape of an elongated plate as a whole, wherein the upper and lower sides of the box body (1) are both reserved with frames of equal thickness near the edges, and the box body (1) is divided into three congruent short-circuit areas and four wiring areas; the short-circuit areas and wiring areas are alternately distributed, and area separation bars (104) and main area baffles (106) are reserved between the short-circuit areas and the wiring areas, characterized in that: The box body (1) is provided with symmetrical rectangular long holes (110) at both ends of the wiring area and at the four corners of the short-circuit area. The short-circuit area is provided with two symmetrical rectangular small holes (111) between the four rectangular long holes (110). The two rectangular small holes (111) are respectively clamped with mutually centrally symmetrical middle terminals (5). The two diagonally opposed rectangular long holes (110) are respectively clamped with centrally symmetrical wiring terminals (3). The remaining four rectangular long holes (110) are all clamped with wiring terminals (2). The surface of the short-circuit area of ​​the box body (1) is located between the two middle terminals (5). ) are rotatably connected to each other with two swing contact rods (7) that are rotatable and symmetrical to the center; and the ends of the swing contact rods (7) that are away from the middle terminal 2 (5) are provided with tension springs 1 (13), and the other ends of the tension springs 1 (13) are fixed with straight tube slip rings (6), and the straight tube slip rings (6) are plugged with wear-resistant slide rods (8) that extend horizontally, and the wear-resistant slide rods (8) are located between the rotation center line of the swing contact rods (7) and the middle terminal 2 (5), and a limiting notch is reserved at one end of the connection terminal 2 (3) close to the center of the short-circuit zone, and an insulating stopper (10) symmetrical in shape to the limiting notch is fixed on the other side of the short-circuit zone.

2. The electric energy metering plug-in junction box according to claim 1, characterized in that: A partition (11) is fixed in the middle of the short-circuit zone, and the partition (11) separates two swing contact rods (7) in the same zone; both ends of the wear-resistant slide bar (8) are fixed with herringbone brackets (9), and the top of the herringbone bracket (9) is reserved with a socket matched with the wear-resistant slide bar (8); the circumferential outer wall of the wear-resistant slide bar (8) is provided with locking cut surfaces (801) near both ends, and the circumferential outer wall of the straight tube slip ring (6) is provided with a common screw hole matched with the position of the locking cut surface (801), and a positioning screw is screwed into the common screw hole.

3. The electric energy metering plug-in junction box according to claim 2, characterized in that: The bottom ends of the two intermediate terminals (5) are both slidably connected with a terminal slider (24), and the bottom ends of all the wiring terminals (2) and the wiring terminals (3) are both slidably connected with a terminal slider (25); the lower surfaces of the wiring terminals (2), the wiring terminals (3) and the intermediate terminals (5) are all provided with an annular groove (33); the upper surfaces of the terminal slider (24) and the terminal slider (25) are both provided with an annular groove (33) that is combined with the annular groove (33) to form a circular hole; the wiring terminals (2) are both provided with an annular groove (2) that is combined with the annular groove (33) to form a circular hole; (2), the upper surfaces of the connecting terminal 2 (3) and the intermediate terminal 2 (5) are provided with vertical self-locking screw holes which penetrate the annular groove 1 (33), and the self-locking screw holes are threaded with clamping bolts; the two terminal sliders 1 (24) are fixedly connected with the same connecting rod 2 (23) by bolts, and the four terminal sliders 2 (25) on both sides of the connecting rod 2 (23) are electrically connected with two mutually parallel connecting rods 1 (22), and the connecting rod 1 (22) and the connecting rod 2 (23) are both made of copper sheets.

4. The electric energy metering plug-in junction box according to claim 3, characterized in that: The ends of the detection zone near the two middle terminals (5) are respectively provided with shaft sleeve holes (109) which are symmetrically distributed with respect to the center, and the two shaft sleeve holes (109) are both embedded with wear-resistant metal sleeves (32), and the two wear-resistant metal sleeves (32) are both rotatably sleeved with connecting shafts (701), and the top ends of the connecting shafts (701) are welded and fixed to the lower surface of one end of the swing contact rod (7); the lower surface of the connecting shaft (701) is electrically connected to flexible wiring (31); the other end of the flexible wiring (31) is electrically connected to the end of the terminal slider (24) on the same side; a spring hook (12) is fixed to the end of the upper surface of the swing contact rod (7) away from the connecting shaft (701), and the end of the tension spring (13) away from the straight tube slip ring (6) is sleeved on the spring hook (12).

5. The electric energy metering plug-in junction box according to claim 1, characterized in that: End fixing plates (101) are reserved at both ends of the box body (1), and internal thread sleeves are embedded on the end fixing plates (101).

6. The electric energy metering plug-in junction box according to claim 1, characterized in that: The frame is provided with a plurality of wire through holes (103) of equal height at a position on the lower surface of the frame close to the box body (1), and the positions of the wire through holes (103) correspond to the wiring positions of the corresponding wiring terminal 1 (2), the middle terminal 2 (5) and the wiring terminal 2 (3); and a marking groove (102) is provided on the upper surface of each wire through hole (103) on the outer side of the frame.

7. The electric energy metering plug-in junction box according to claim 3, characterized in that: A small area baffle (107) is fixed at the junction of the short-circuit area and the wiring area on the lower surface of the box body (1), and thickened baffles (115) are reserved on both sides of the long sides of the rectangular long hole (110) and the rectangular small hole (111) on the lower surface of the box body (1); anti-drop ridges are reserved on both sides of the wiring terminal 1 (2), the wiring terminal 2 (3) and the middle terminal 2 (5) near the bottom, and limiting sliding grooves matching the anti-drop ridges are reserved on both sides of the top of the terminal slider 1 (24) and the terminal slider 2 (25); a rectangular notch (105) is opened on the inner side of the frame near the end of the terminal slider 1 (24), and the rectangular notch (105) tightly clamps the terminal slider 1 (24).

8. The electric energy metering plug-in junction box according to claim 1, characterized in that: The wiring area is provided with a second shaft sleeve hole (112) at an end portion close to one of the rectangular long holes (110), and a sliding bearing is embedded in the second shaft sleeve hole (112), a movable metal shaft is rotatably connected in the sliding bearing, and a swing plug strip (26) is fixed to the top end of the movable metal shaft, and a wear-resistant plug of an arrow-shaped structure is reserved at one end of the side of the swing plug strip (26) away from the movable metal shaft, and a plug hole (113) is provided at the end portion of the wiring area of ​​the box body (1) close to the wear-resistant plug, and a fixing rod is fixedly plugged into the plug hole (113), a metal support block (19) is welded to the top end of the fixing rod, and a semi-arc groove matching the wear-resistant plug is provided on the side of the metal support block (19); the wiring area is provided with two parallel strip holes ( 114), and the upper surfaces of the two strip holes (114) are slidably connected with a same pressing slide block (21), and a clamping groove (2101) symmetrical to the semi-arc groove is formed on a side of the pressing slide block (21) close to the semi-arc groove; two rectangular inserts are reserved at the bottom end of the pressing slide block (21), and the same anti-slipping card plate (30) is fixed to the rectangular inserts through the corresponding strip holes (114), and mutually symmetrical L-shaped slide rails (108) are respectively fixed on both sides of the anti-slipping card plate (30) on the lower surface of the box body (1); a spring clamping groove is formed on a side of the pressing slide block (21) away from the clamping groove (2101), and a pressing spring (4) is fixed in the spring clamping groove; a spring stopper (20) is fixed to one end of the pressing spring (4) away from the pressing slide block (21).

9. The electric energy metering plug-in junction box according to claim 8, characterized in that: The bottom end of the fixing rod is sleeved with a wiring sleeve, and the bottom end of the wiring sleeve is welded with a hard-wired wire C (29), and the end of the hard-wired wire C (29) away from the wiring sleeve is fixed to the end of a terminal slider 2 (25) closest to the wiring area; the bottom end of the movable metal shaft is electrically connected to a flexible wire 1 (28), and the end of the flexible wire 1 (28) away from the movable metal shaft is fixedly connected to the end of another terminal slider 2 (25).

10. An electric energy metering plug-in junction box according to any one of claims 8-9, characterized in that: The same arc-shaped slide rail (17) is inserted between the regional partition bars (104) on both sides of the swing plug-in bar (26), and the opening of the arc-shaped slide rail (17) faces the movable metal shaft and contains the movable metal shaft on the inner arc side, and the outer wall of the arc-shaped slide rail (17) is slidably sleeved with an arc-shaped slide sleeve (16); a toggle rod (27) is fixed to the end of the upper surface of the swing plug-in bar (26) away from the movable metal shaft, and the same reset tension spring (18) is fixed between the toggle rod (27) and the outer wall of the arc-shaped slide sleeve (16); an embedded magnet (15) is embedded in the outer wall of the arc-shaped slide sleeve (16), and a magnet column (14) that attracts the embedded magnet (15) is fixed to the side of the regional partition bar (104) near the end of the arc-shaped slide rail (17).

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