A three-phase electric energy meter

Abstract

The present invention discloses a three-phase electric energy meter, which relates to the technical field of electric power equipment, and includes: a main body mechanism, the main body mechanism includes a meter body, and the lower end surface of the meter body is provided with a wiring groove; an on-off mechanism is installed inside the meter body, and the on-off mechanism includes a conductive wire, and a conductive hoop is slidably connected to the outside of the conductive wire, and an insulating sleeve is sleeved between every two conductive hoops; a wiring mechanism is installed in the wiring groove, and the wiring mechanism includes a wiring block, and a wire insertion hole is penetrated in the wiring block, and a transmission line is installed in each of the wire insertion holes; a protective mechanism is installed in the wiring groove, and the protective mechanism includes a protective plate; a pressure-touch mechanism is provided on the top of the protective plate, and the pressure-touch mechanism includes a rotating head. The present application has the advantages that the switch of the wiring protection cover can be controlled by sliding, and sliding the wiring protection cover can cut off the connection of the wiring terminal.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and more specifically, to a three-phase electric energy meter. Background Art

[0002] The main function of a three-phase energy meter is to measure and record the energy consumption of electricity users. It calculates the consumed energy (usually in kilowatt-hours kWh) by measuring the combination of current, voltage and time, and transmits the data to the power company for billing.

[0003] Three-phase energy meters usually have eight terminals, four inputs and four outputs, of which three groups are live wire inputs and outputs, and the other group is neutral wire input and output. At present, the terminals of some three-phase energy meters are protected by wiring protection covers fixed by screws, which have the advantages of dustproof, anti-interference and anti-electric shock, etc. However, since the wiring protection cover is installed on the three-phase energy meter by screws, outsiders can easily remove it with tools, resulting in the risk of damaging internal equipment and electric shock, greatly reducing the safety of the three-phase energy meter; removing the wiring protection cover with tools is relatively cumbersome and will also increase the workload of the staff. Therefore, it is necessary to propose a three-phase energy meter to solve the above problems. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a three-phase electric energy meter, which can solve the problems that the wiring protection cover on the existing three-phase electric energy meter is easy to remove, the protection effect is low, and the removal of the wiring protection cover is too cumbersome, which increases the difficulty of maintenance. It has the advantages that the switch of the wiring protection cover can be controlled by sliding, and the connection of the wiring terminal can be cut off by sliding the wiring protection cover open.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A three-phase electric energy meter comprises a main body mechanism, wherein the main body mechanism comprises a meter body, and a wiring slot is provided on the lower end surface of the meter body;

[0007] The meter body is provided with an on-off mechanism inside, the on-off mechanism comprising a conductive wire electrically connected to the meter body, a conductive hoop slidably connected to the outside of the conductive wire, and an insulating sleeve is sleeved between every two conductive hoops;

[0008] A wiring mechanism is installed in the wiring slot, and the wiring mechanism includes a plurality of wiring blocks installed inside the wiring slot, and a wire insertion hole is penetrated in the wiring block, and a power transmission line is installed in each of the wire insertion holes;

[0009] A protection mechanism is installed in the wiring slot, and the protection mechanism includes a protection plate slidably connected to the inside of the wiring slot;

[0010] A pressure-touch mechanism is arranged on the top of the protection plate, and the pressure-touch mechanism comprises a plurality of rotating heads rotatably connected to the top of the protection plate.

[0011] As a preferred solution of the present invention, the main body mechanism also includes a display screen arranged on the watch body, and a plurality of wiring holes are equidistantly provided on the bottom of the watch body, and the wiring holes are connected to the interior of the wiring groove. A pull rod is slidably connected to the interior of one side of the watch body, and a lock is fixed to the end of the pull rod, and side sliding grooves are provided on both sides of the wiring groove, and both sides of the protective plate are slidably connected to the corresponding side sliding grooves.

[0012] As a preferred solution of the present invention, the on-off mechanism also includes a plurality of inner slide grooves equidistantly arranged inside the table body, each of the inner slide grooves is equipped with two of the conductive wires, the insulating sleeve and the conductive hoop are slidably connected in the corresponding inner slide grooves, an empty groove is provided in the table body above each of the inner slide grooves, the rotating head is slidably connected in the corresponding inner slide groove and the empty groove, a first spring is installed at the bottom of the inner slide groove, and the insulating sleeve is elastically connected to the inside of the inner slide groove through the first spring.

[0013] As a preferred solution of the present invention, the wiring mechanism further comprises a clamping screw installed on each of the wiring blocks, wherein the clamping screw is inserted into the wire insertion hole and contacts the power transmission line.

[0014] As a preferred solution of the present invention, the protective mechanism also includes two locks symmetrically fixed on one side of the protective plate, the locks are slidably connected in the corresponding side sliding grooves, and a limiting hole is provided on the other side of the protective plate.

[0015] As a preferred solution of the present invention, the pressure touch mechanism also includes a rotating shaft fixed on both sides of the rotating head, the rotating shaft is rotatably connected to the inside of the protective plate, each of the rotating shafts is installed with a torsion spring, the rotating shaft is elastically connected to the protective plate through the torsion spring, and a locking groove is provided at the end of one of the rotating shafts on each of the rotating heads.

[0016] As a preferred solution of the present invention, a limiting mechanism is installed inside the protective plate, and the limiting mechanism includes a long rod slidably connected to the inside of the top end of the protective plate, and the long rod passes through each of the rotating heads and each of the rotating shafts, and a shift block is installed at one end of the long rod close to the limiting hole, and a plurality of limiting blocks are equidistantly fixed on the long rod, and the limiting blocks are slidably connected to the inside of the protective plate.

[0017] As a preferred solution of the present invention, an anti-theft mechanism is provided inside the watch body near the limiting hole, and the anti-theft mechanism includes a locking slider slidably connected to the inside of the watch body, a squeezing block is fixed to the bottom of the locking slider, a second spring is installed on the side of the locking slider, and the locking slider is elastically connected to the inside of the watch body through the second spring, a lifting rod is penetrated by the locking slider, and the lifting rod is slidably connected to the locking slider, a blocking piece is fixed on the lifting rod, and the blocking piece contacts the top surface of the locking slider, a support rod is fixed to the top of the lifting rod, and a drag plate is fixed to the end of the support rod.

[0018] As a preferred solution of the present invention, an actual control mechanism is installed in the table body below the locking slider, and the actual control mechanism includes a lifting column slidably connected to the inside of the table body, a third spring is sleeved on the surface of the lifting column, and the lifting column is elastically connected to the inside of the table body through the third spring, and a side rotation groove is provided on the outer side of the table body, and two rotating columns are symmetrically fixed on both sides of the inside of the side rotation groove, and a slot is provided on the side wall of the rotating column, and a swing rod is installed in the side rotation groove, the bottom end of the lifting column abuts against one end of the swing rod, and a tool hook is fixed on the other end of the swing rod, and adjustment slots are symmetrically provided on both sides of the swing rod, and the rotating column is rotatably connected to the corresponding adjusting slot, and an insert block is fixed at one end of the adjusting slot, and the insert block is engaged with the corresponding slot, and a push plate is fixed on the top side of the lifting column, and the push plate abuts against the bottom end of the lifting rod.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. The locking of the protective plate is achieved by the locking connection between the lock buckle and the lock head, and the locking slider and the limit hole. The electrician only needs to pull the pull rod outward to release the lock of the lock buckle on the lock head; by toggling the swing rod, the lifting column rises and pushes the extrusion block, and the locking slider can be pulled out of the limit hole, thereby releasing the lock of the locking slider on the protective plate. The operation process is simple and fast, and the protective plate can be opened quickly, effectively improving the efficiency of electricians in repairing circuits and connecting lines. The protective plate presses down the insulating sleeve through the rotating head, so that the conductive hoop is inserted into the plug hole, and the conductive wire is electrically connected to the transmission line. When the protective plate is opened, the resistance of the rotating head to the insulating sleeve can be released, thereby releasing the first spring, so that the conductive hoop slides out of the plug hole, and then disconnecting the conductive path, ensuring the safety of electricians when replacing or connecting circuits. Moreover, by cutting off the circuit when opening the protective plate, it can also prevent non-professionals from electric shock and other dangers after opening the protective plate, thereby protecting life safety.

[0021] 2. The locking of the protective plate is controlled by the lock buckle and the locking slider respectively. Releasing any one of them cannot completely unlock the lock. The operation of the lock buckle is relatively more obvious and direct, which is somewhat misleading and deceptive, and more attractive to try; the unlocking of the locking slider requires the swing of the pendulum, and the swing of the pendulum requires the swing of the pendulum into the body. In addition, the outer end of the pendulum is set as a tool hook, disguised as an ordinary tool hook, which makes the operation more difficult and the conditions for implementation are more concealed, which is difficult for non-professionals to find. The above design can effectively prevent non-professionals from opening the protective plate. On the one hand, it avoids the risk of damage, electric shock, etc. On the other hand, it increases the difficulty of opening the protective plate, which can effectively prevent illegal elements from stealing electricity.

[0022] 3. When non-professionals use violent means to open the protective plate, the actual control mechanism will not be triggered, but the locking slider will be directly pushed out of the limit hole, thereby unlocking the protective plate, allowing the protective plate to slide, and then opening the wiring slot. However, when the locking slider slides, it will directly drive the lifting rod to move, and the drag plate will pull the dial block to slide the long rod, thereby driving the limit block to slide out of the lock slot, unlocking the limit block from locking the shaft, and allowing the rotating head to rotate freely. Even if non-professionals privately connect the power transmission line, when the protective plate closes the wiring slot, the rotating head can rotate freely, and the rotating head loses the pressure to push the insulating sleeve, so that the conductive hoop cannot be pushed into the wire hole, and the conductive wire cannot be electrically reconnected to the power transmission line. Therefore, the power transmission line and the conductive wire are still in a disconnected state, making the entire circuit unable to be used normally, and thus the purpose of stealing electricity cannot be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention when viewed from above;

[0025] Figure 3 It is a schematic diagram of the internal structure of the lower half of the watch body of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure inside the lower half of the meter body and the wiring slot of the present invention;

[0027] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0028] Figure 6 It is a schematic diagram of the structure of the anti-theft mechanism and the actual control mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the adjusting slot and the rotating column of the present invention;

[0030] Figure 8 It is a schematic diagram of the internal structure of the wiring block of the present invention;

[0031] Fig. 9 It is a schematic diagram of a partial cutaway structure of a protective plate of the present invention;

[0032] Fig.10 It is a schematic diagram of a partial cross-section structure of the pressure-touch mechanism of the present invention;

[0033] Fig.11 It is a schematic diagram of the matching structure of the rotating head and the insulating sleeve of the present invention.

[0034] Description of the numbers in the figure:

[0035] 1. Main body; 11. Meter body; 12. Display screen; 13. Wiring slot; 14. Wire harness hole; 15. Pull rod; 16. Lock; 17. Side slide slot; 2. On / off mechanism; 21. Inner slide slot; 22. Empty slot; 23. Conductive wire; 24. Insulating sleeve; 25. Conductive hoop; 26. First spring; 3. Wiring mechanism; 31. Wiring block; 32. Wire insertion hole; 33. Pressing screw; 34. Transmission line; 4. Protection mechanism; 41. Protection plate; 42. Lock head; 43. Limiting hole; 5. Pressing mechanism; 51. Rotation head; 52, shaft; 53, torsion spring; 54, lock slot; 6, limit mechanism; 61, long rod; 62, dial block; 63, limit block; 7, anti-theft mechanism; 71, locking slider; 72, extrusion block; 73, second spring; 74, lifting rod; 75, baffle; 76, support rod; 77, drag plate; 8, actual control mechanism; 81, lifting column; 82, third spring; 83, side rotation slot; 84, rocker arm; 85, tool hook; 86, adjustment slot; 87, plug block; 88, rotating column; 89, slot; 891, push plate. DETAILED DESCRIPTION

[0036] 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, not all of them. 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.

[0037] For example, see Figure 1-Figure 11 As shown, the present invention discloses a three-phase electric energy meter, comprising a main body mechanism 1, the main body mechanism 1 comprises a meter body 11, and a wiring slot 13 is provided on the lower end surface of the meter body 11;

[0038] The on-off mechanism 2 is installed inside the meter body 11. The on-off mechanism 2 includes a conductive wire 23 electrically connected to the meter body 11. A conductive hoop 25 is slidably connected to the outside of the conductive wire 23. An insulating sleeve 24 is sleeved between every two conductive hoops 25.

[0039] A wiring mechanism 3 is installed in the wiring slot 13. The wiring mechanism 3 includes a plurality of wiring blocks 31 installed inside the wiring slot 13. A wire insertion hole 32 is provided through the wiring block 31. A power transmission line 34 is installed in each wire insertion hole 32.

[0040] A protection mechanism 4 is installed in the wiring slot 13, and the protection mechanism 4 includes a protection plate 41 slidably connected to the inside of the wiring slot 13;

[0041] A pressure-touch mechanism 5 is disposed on the top of the protection plate 41 . The pressure-touch mechanism 5 includes a plurality of rotating heads 51 rotatably connected to the top of the protection plate 41 .

[0042] When the electrician performs normal wiring, he first slides the protective plate 41 upwards and pushes the protective plate 41 upwards to the inside of the meter body 11, thereby quickly opening the wiring slot 13, and then inserts a plurality of power transmission lines 34 into the wiring slot 13 from the wire bundle hole 14 at the bottom of the meter body 11, and then inserts the power transmission lines 34 into the corresponding wire insertion holes 32 in the wiring block 31. Figure 4 As shown, attached Figure 4 The wiring block 31 in the embodiment has eight interfaces from left to right, namely, A input, A output, B input, B output, C input, C output, neutral line input and neutral line output (assuming that the interfaces of the three-phase electric energy meter are phase A, phase B and phase C respectively). When the protective plate 41 closes the wiring slot 13, the plurality of rotating heads 51 on the top of the protective plate 41 abut against and press down the corresponding insulating sleeve 24 (as shown in the attached figure). Fig.11 As shown in the orientation, the insulating sleeve 24 drives the conductive hoop 25 to be inserted into the corresponding wire insertion hole 32, and the power transmission line 34 connected to the wire insertion hole 32 can be inserted into the conductive hoop 25 and contact with the conductive hoop 25. At the same time, the conductive hoop 25 always slides on the outside of the conductive wire 23 and is electrically connected to the conductive wire 23. Therefore, taking phase A as an example, the power transmission line 34 in the A input transmits electric energy to the corresponding conductive wire 23 through the corresponding conductive hoop 25, thereby entering the circuit in the meter body 11, and then conducting from the conductive wire 23 of the A output to the corresponding conductive hoop 25, and finally conducting out from the power transmission line 34 in the A output to form a complete path. After the protective plate 41 is opened, the rotating head 51 rises together with the protective plate 41 and no longer conflicts with the insulating sleeve 24. Then the first spring 26 in the inner slide groove 21 lifts the insulating sleeve 24, and the insulating sleeve 24 drives the conductive hoop 25 to rise. The conductive hoop 25 is disengaged from the wire insertion hole 32 and no longer contacts the corresponding power transmission line 34. The path is disconnected, thereby ensuring the safety of electricians when replacing or connecting the circuit. In addition, by cutting off the circuit when opening the protective plate 41, it can also prevent non-professionals from opening the protective plate 41 and causing dangers such as electric shock, thereby protecting life safety.

[0043] Example 2: This example is an explanation based on Example 1. For details, please refer to Figure 1-Figure 11The main body mechanism 1 also includes a display screen 12 arranged on the watch body 11. A plurality of wire harness holes 14 are equidistantly arranged at the bottom of the watch body 11. The wire harness holes 14 are connected to the inside of the wiring groove 13. A pull rod 15 is slidably connected to the inside of one side of the watch body 11. A lock buckle 16 is fixed to the end of the pull rod 15. Side slide grooves 17 are arranged on both sides of the wiring groove 13, and both sides of the protective plate 41 are slidably connected to the corresponding side slide grooves 17.

[0044] The on-off mechanism 2 also includes a plurality of inner grooves 21 equidistantly arranged inside the meter body 11, each inner groove 21 is installed with two conductive wires 23, an insulating sleeve 24 and a conductive hoop 25 are slidably connected in the corresponding inner groove 21, an empty groove 22 is provided in the meter body 11 above each inner groove 21, a rotating head 51 is slidably connected in the corresponding inner groove 21 and the empty groove 22, a first spring 26 is installed at the bottom of the inner groove 21, and the insulating sleeve 24 is elastically connected to the inside of the inner groove 21 through the first spring 26.

[0045] The wiring mechanism 3 further includes a clamping screw 33 mounted on each wiring block 31 . The clamping screw 33 is inserted into the wire insertion hole 32 and abuts against the power transmission line 34 .

[0046] The protection mechanism 4 further includes two locks 42 symmetrically fixed to one side of the protection plate 41 . The locks 42 are slidably connected to the corresponding side sliding grooves 17 . A limiting hole 43 is provided on the other side of the protection plate 41 .

[0047] The pressure touch mechanism 5 also includes a rotating shaft 52 fixed on both sides of the rotating head 51, and the rotating shaft 52 is rotatably connected to the inside of the protective plate 41. A torsion spring 53 is installed on each rotating shaft 52, and the rotating shaft 52 is elastically connected to the protective plate 41 through the torsion spring 53. A locking groove 54 is provided at the end of one of the rotating shafts 52 on each rotating head 51.

[0048] When the protective plate 41 is in a state of closing the wiring slot 13, the rotating head 51 on the top of the protective plate 41 remains perpendicular to the protective plate 41, the rotating head 51 contacts the corresponding insulating sleeve 24, and the insulating sleeve 24 compresses the first spring 26 at its bottom to put it in a force storage state. At the same time, the insulating sleeve 24 presses the conductive hoop 25 into the wire insertion hole 32 in the corresponding wiring block 31, thereby connecting the conductive wire 23 and the transmission line 34 in the same path, thereby transmitting electrical energy. When it is necessary to repair or connect the line, the electrician slides the protective plate 41 upward, and the two sides of the protective plate 41 slide in the side slide grooves 17 on both sides of the wiring groove 13. The rise of the protective plate 41 also drives the rotating head 51 to rise, and the rotating head 51 slides into the empty groove 22. The insulating sleeve 24 loses the resistance of the rotating head 51, and the first spring 26 at the bottom of the inner slide groove 21 pushes the insulating sleeve 24 to rise. The insulating sleeve 24 drives the conductive hoop 25 to slide along the surface of the conductive wire 23, and makes the conductive hoop 25 slide out of the plug hole 32 and disconnect from the power transmission line 34, so that the protective plate 41 is opened and the power transmission of the conductive wire 23 is disconnected, protecting the electrician from electric shock. After the protective plate 41 rises to the highest point, it pushes the pull rod 15, and the pull rod 15 drives the lock 16 to enter the side slide groove 17 again. The top surface of the lock 16 just contacts the lock head 42 below the side of the protective plate 41, so that the protective plate 41 will not fall, which is convenient for the electrician to perform maintenance or wiring operations.

[0049] Example 3: This example is an explanation based on Example 1. For details, please refer to Figure 1-Figure 11 A limiting mechanism 6 is installed inside the protective plate 41. The limiting mechanism 6 includes a long rod 61 slidably connected to the inside of the top of the protective plate 41, and the long rod 61 passes through each rotating head 51 and each rotating shaft 52. A shift block 62 is installed at one end of the long rod 61 close to the limiting hole 43. A plurality of limiting blocks 63 are equidistantly fixed on the long rod 61, and the limiting blocks 63 are slidably connected to the inside of the protective plate 41.

[0050] An anti-theft mechanism 7 is provided inside the watch body 11 near the limiting hole 43, and the anti-theft mechanism 7 includes a locking slider 71 slidably connected to the inside of the watch body 11, a squeezing block 72 is fixed to the bottom of the locking slider 71, a second spring 73 is installed on the side of the locking slider 71, and the locking slider 71 is elastically connected to the inside of the watch body 11 through the second spring 73, a lifting rod 74 is penetrated by the locking slider 71, and the lifting rod 74 is slidably connected to the locking slider 71, a blocking piece 75 is fixed on the lifting rod 74, and the blocking piece 75 resists the top surface of the locking slider 71, a support rod 76 is fixed to the top of the lifting rod 74, and a drag plate 77 is fixed to the end of the support rod 76.

[0051] The actual control mechanism 8 is installed in the watch body 11 below the locking slider 71, and the actual control mechanism 8 includes a lifting column 81 slidably connected to the inside of the watch body 11, and a third spring 82 is sleeved on the surface of the lifting column 81. The lifting column 81 is elastically connected to the inside of the watch body 11 through the third spring 82. A side rotation groove 83 is provided on the outside of the watch body 11, and two rotating columns 88 are symmetrically fixed on both sides of the inside of the side rotation groove 83. The side wall of the rotating column 88 is provided with a swing rod 84. The bottom end of the lifting column 81 abuts against one end of the swing rod 84, and a tool hook 85 is fixed to the other end of the swing rod 84. Adjustment grooves 86 are symmetrically provided on both sides of the swing rod 84. The rotating column 88 is rotatably connected to the corresponding adjusting groove 86. An insert block 87 is fixed at one end of the adjusting groove 86, and the insert block 87 is engaged with the corresponding slot 89. A push plate 891 is fixed to the top side of the lifting column 81, and the push plate 891 abuts against the bottom end of the lifting rod 74.

[0052] The protective plate 41 cannot be opened at will. When the protective plate 41 closes the wiring slot 13, the lock buckle 16 on one side of the meter body 11 goes deep into the side slide slot 17 and engages with the lock head 42 on the side of the protective plate 41, thereby limiting the opening of the protective plate 41; a locking slider 71 is also provided inside the other side of the meter body 11, which is inserted into the limiting hole 43 on the other side of the protective plate 41 under the elastic force of the second spring 73, further locking the protective plate 41 to prevent the protective plate 41 from being opened at will.

[0053] When the electrician opens the protective plate 41, he first needs to pull the pull rod 15 outward, and drive the lock buckle 16 to slide through the pull rod 15, so as to release the restriction of the lock buckle 16 on the lock head 42, and then push the rocker 84 into the inside of the watch body 11, and the rocker 84 goes deep into the side rotation groove 83, so that the rotating column 88 on the inner wall of the side rotation groove 83 slides to the right end of the adjustment groove 86. In the initial state, the rotating column 88 is at the leftmost end of the adjustment groove 86, and the insert block 87 at the left end of the adjustment groove 86 is inserted into the slot 89 on the rotating column 88, thereby limiting the rotation of the adjustment groove 86 and the rotating column 88, and then locking the rocker 84 to prevent the rocker 84 from rotating. The rotating column 88 slides to the right side of the adjusting slot 86, and the insert block 87 slides out of the slot 89, so that the rotating column 88 and the adjusting slot 86 can rotate freely. Then, the tool hook 85 hangs a heavy object (tools used by electricians, etc.), or is directly pressed down by hand, which can drive the swing rod 84 to rotate around the rotating column 88. The left end of the swing rod 84 tilts upward, pushing the lifting column 81 to rise, and the lifting column 81 compresses the third spring 82. At the same time, the inclined surface at the top of the lifting column 81 is adapted to the extrusion block 72. The lifting column 81 can rise and push the locking slider 71 to slide to the right through the extrusion block 72. The locking slider 71 compresses the second spring 73 and slides out of the limit hole 43, thereby releasing the restriction on the protective plate 41 and allowing the protective plate 41 to be opened smoothly.

[0054] In the initial state, the long rod 61 inside the protective plate 41 drives the limit block 63 to be engaged in the lock slot 54, and the rotating head 51 is connected to the top of the protective plate 41 through the rotating shaft 52. After the limit block 63 is engaged in the lock slot 54, it can prevent the rotating shaft 52 from rotating, thereby preventing the rotating head 51 from rotating, so that the rotating head 51 and the protective plate 41 remain perpendicular to each other, and then the rotating head 51 can contact the insulating sleeve 24 to achieve circuit connectivity, and at the same time, the drag plate 77 is also buckled with the shift block 62. Before the lifting column 81 rises, there is a certain distance between its top surface and the extrusion block 72. When the lifting column 81 starts to rise, the lifting column 81 first pushes the lifting rod 74 up through the push plate 891, and the lifting rod 74 slides relative to the locking slider 71. The lifting rod 74 drives the drag plate 77 to rise through the support rod 76, so that the drag plate 77 is separated from the shift block 62. At the same time as the separation is completed, the lifting column 81 begins to resist the extrusion block 72, and then drives the locking slider 71 to slide into the inside of the watch body 11. The locking slider 71 drives the lifting rod 74 to move to the right, and the lifting rod 74 drives the support rod 76 and the drag plate 77 to enter the watch body 11. At this time, the movement of the drag plate 77 will not drive the shift block 62 to move. After the support rod 76 and the drag plate 77 enter the watch body 11, the support rod 76 and the drag plate 77 can be prevented from blocking the protective plate 41 from rising.

[0055] As mentioned above, the arrangement of the pull rod 15, the lock buckle 16, the locking slider 71 and other structures can complete the locking of the protective plate 41, but the operation of the pull rod 15 and the lock buckle 16 is relatively more obvious and direct, which is misleading and deceptive to a certain extent. The unlocking of the locking slider 71 requires the swing rod 84 to be able to swing, and the swing rod 84 needs to be pushed into the inside of the watch body 11 to be able to swing. In addition, the outer end of the swing rod 84 is set as a tool hook 85, disguised as an ordinary tool hook, which is not only more difficult to operate, but also more concealed, and generally difficult to find. Non-professionals who want to open the protective plate 41 will first be misled by the pull rod 15 and the lock buckle 16. After pulling the pull rod 15 to drive the lock buckle 16 to unlock the lock head 42, they find that the protective plate 41 still cannot slide, and they may give up opening the protective plate 41; or continue to operate the tool hook 85, find that the tool hook 85 cannot drive the swing rod 84 to shake, and thus give up opening the protective plate 41. The above design can effectively prevent non-professionals from opening the protective plate 41, which can avoid the risk of damage, electric shock, etc. on the one hand, and increase the difficulty of opening the protective plate 41 on the other hand, which can effectively prevent illegal elements from stealing electricity.

[0056] Once someone releases the lock buckle 16 and still finds that the protective plate 41 cannot be opened, and then forcibly opens the protective plate 41, the bottom surface of the limiting hole 43 and the end of the locking slide block 71 are both provided with matching inclined surfaces. If someone forcibly slides the protective plate 41 upward, the bottom inclined surface of the limiting hole 43 can push the locking slide block 71 out of the limiting hole 43, thereby releasing the restriction of the locking slide block 71 to avoid damage to the protective mechanism 4 or the anti-theft mechanism 7. When the locking slide block 71 slides to the right and compresses the second spring 73 (as shown in the attached figure), the locking slide block 71 is pressed against the locking surface 73, and the locking slide block 71 is pressed against the locking surface 73. Fig. 9 The cam 77 is engaged with the locking cam 71 and the locking cam 73 is engaged with the locking cam 74. The cam 77 is engaged with the locking cam 73 and the locking cam 73 is engaged with the locking cam 74. Although the protective plate 41 can slide upward to open the wiring slot 13 after being violently opened, the conductive hoop 25 will be disconnected from the power transmission line 34 at the same time. Even if the criminals reset the protective plate 41 after privately connecting the wires, the displacement of the long rod 61 will cause the limit block 63 to no longer be engaged with the lock slot 54, causing the rotating head 51 to rotate immediately after being subjected to external force, thereby losing the pressure to push the insulating sleeve 24, and then being unable to push the conductive hoop 25 into the wire insertion hole 32 to re-electrically connect with the power transmission line 34. Therefore, the power transmission line 34 and the conductive line 23 are still in a disconnected state, making the entire circuit unable to be used normally, and the criminals will not be able to steal electricity.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A three-phase electric energy meter, comprising a main body (1), characterized in that: The main body mechanism (1) comprises a meter body (11), and a wiring groove (13) is provided on the lower end surface of the meter body (11); An on-off mechanism (2) is installed inside the meter body (11), the on-off mechanism (2) comprises a conductive wire (23) electrically connected to the meter body (11), a conductive hoop (25) is slidably connected to the outside of the conductive wire (23), and an insulating sleeve (24) is sleeved between every two conductive hoops (25); A wiring mechanism (3) is installed in the wiring slot (13), and the wiring mechanism (3) comprises a plurality of wiring blocks (31) installed inside the wiring slot (13), and a wire insertion hole (32) is provided through the wiring block (31), and a power transmission line (34) is installed in each of the wire insertion holes (32); A protection mechanism (4) is installed in the wiring slot (13), and the protection mechanism (4) comprises a protection plate (41) slidably connected to the inside of the wiring slot (13); A pressure contact mechanism (5) is provided on the top of the protective plate (41), and the pressure contact mechanism (5) comprises a plurality of rotating heads (51) rotatably connected to the top of the protective plate (41), and the rotating heads (51) abut against the insulating sleeve (24).

2. The three-phase electric energy meter according to claim 1, characterized in that: The main body mechanism (1) also includes a display screen (12) arranged on the watch body (11), and a plurality of wiring holes (14) are equidistantly arranged at the bottom of the watch body (11), and the wiring holes (14) are connected to the inside of the wiring groove (13). A pull rod (15) is slidably connected to the inside of one side of the watch body (11), and a lock buckle (16) is fixed to the end of the pull rod (15). Side sliding grooves (17) are provided on both sides of the wiring groove (13), and both sides of the protective plate (41) are slidably connected to the corresponding side sliding grooves (17).

3. The three-phase electric energy meter according to claim 1, characterized in that: The on-off mechanism (2) further comprises a plurality of inner slide grooves (21) equidistantly arranged inside the meter body (11), each of the inner slide grooves (21) being provided with two of the conductive wires (23), the insulating sleeve (24) and the conductive hoop (25) being slidably connected in the corresponding inner slide grooves (21), an empty groove (22) being provided in the meter body (11) above each of the inner slide grooves (21), the rotating head (51) being slidably connected in the corresponding inner slide groove (21) and the empty groove (22), a first spring (26) being installed at the bottom of the inner slide groove (21), and the insulating sleeve (24) being elastically connected to the inside of the inner slide groove (21) via the first spring (26).

4. The three-phase electric energy meter according to claim 2, characterized in that: The protection mechanism (4) further comprises two locks (42) symmetrically fixed on one side of the protection plate (41), the locks (42) being slidably connected in the corresponding side sliding grooves (17), and a limiting hole (43) is provided on the other side of the protection plate (41).

5. The three-phase electric energy meter according to claim 4, characterized in that: The pressure-touch mechanism (5) further comprises rotating shafts (52) fixed on both sides of the rotating head (51), the rotating shafts (52) being rotatably connected to the inside of the protective plate (41), each of the rotating shafts (52) being installed with a torsion spring (53), the rotating shafts (52) being elastically connected to the protective plate (41) via the torsion spring (53), and a locking groove (54) being provided at the end of one of the rotating shafts (52) on each of the rotating heads (51).

6. The three-phase electric energy meter according to claim 5, characterized in that: A limiting mechanism (6) is installed inside the protective plate (41), and the limiting mechanism (6) comprises a long rod (61) slidably connected to the inside of the top end of the protective plate (41), and the long rod (61) passes through each rotating head (51) and each rotating shaft (52), and a shift block (62) is installed at one end of the long rod (61) close to the limiting hole (43), and a plurality of limiting blocks (63) are fixed on the long rod (61) at equal distances, and the limiting blocks (63) are slidably connected to the inside of the protective plate (41).

7. The three-phase electric energy meter according to claim 6, characterized in that: An anti-theft mechanism (7) is arranged inside the watch body (11) near the limiting hole (43), and the anti-theft mechanism (7) comprises a locking slider (71) slidably connected to the inside of the watch body (11), a squeezing block (72) is fixed at the bottom of the locking slider (71), a second spring (73) is installed on the side of the locking slider (71), and the locking slider (71) is elastically connected to the inside of the watch body (11) through the second spring (73), a lifting rod (74) is arranged through the locking slider (71), and the lifting rod (74) is slidably connected to the locking slider (71), a blocking piece (75) is fixed on the lifting rod (74), and the blocking piece (75) contacts the top surface of the locking slider (71), a support rod (76) is fixed at the top end of the lifting rod (74), and a drag plate (77) is fixed at the end of the support rod (76).

8. The three-phase electric energy meter according to claim 7, characterized in that: A real control mechanism (8) is installed in the watch body (11) below the locking slider (71), and the real control mechanism (8) includes a lifting column (81) slidably connected to the inside of the watch body (11), a third spring (82) is sleeved on the surface of the lifting column (81), and the lifting column (81) is elastically connected to the inside of the watch body (11) through the third spring (82), and a side rotation groove (83) is provided on the outside of the watch body (11), and two rotating columns (88) are symmetrically fixed on both sides of the inside of the side rotation groove (83), and a slot (89) is provided on the side wall of the rotating column (88), and the side rotation groove (83) is provided with a plurality of rotating columns (88) on the inside of the rotating column (88). 3) is installed with a rocker rod (84), the bottom end of the lifting column (81) abuts against one end of the rocker rod (84), a tool hook (85) is fixed to the other end of the rocker rod (84), the two sides of the rocker rod (84) are symmetrically provided with adjustment grooves (86), the rotating column (88) is rotatably connected to the corresponding adjustment groove (86), one end of the adjustment groove (86) is fixed with an insert block (87), the insert block (87) is snap-fitted and connected with the corresponding slot (89), a push plate (891) is fixed to the top side of the lifting column (81), and the push plate (891) abuts against the bottom end of the lifting rod (74).

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