Electric energy meter

Abstract

The invention relates to the field of electric energy metering devices, and particularly discloses an electric energy meter which comprises an electric meter body and a base, the base is provided with a wiring terminal, the wiring terminal is used for being inserted into the electric meter body and electrically connected with the electric meter body, and the surface of the electric meter body is provided with a connecting groove. A connecting groove is formed in the base, the connecting groove extends in the direction that the wiring terminal is inserted into the electric meter body, a stopping block is arranged on the surface, provided with the connecting groove, of the electric meter body, the stopping block shields part of an opening, facing the base, of the connecting groove, a connecting block is arranged on the base, and the connecting groove is used for allowing the connecting block to be inserted. The electric energy meter has the effect of improving the maintenance and replacement convenience of the electric energy meter.

Description

Technical Field

[0001] The present application relates to the field of electric energy metering devices, and in particular to an electric energy meter. Background Art

[0002] An energy meter, also known as a watt-hour meter or fire meter, is an instrument used to measure electrical energy consumption. It records the total amount of electrical energy that passes through a circuit over a specific period of time.

[0003] The installation process of the energy meter mainly includes wiring and fixing the energy meter. When installing the energy meter, you need to fix the energy meter first so that the energy meter is fixed on the wall or in the meter box, and then the energy meter is wired and installed.

[0004] When the electric energy meter fails and needs to be repaired or replaced, it is necessary to disconnect the wiring first, remove the electric energy meter, replace it with a new one, and then reinstall it. This operation is inconvenient and needs to be improved. Summary of the invention

[0005] In order to improve the convenience of maintenance and replacement of an electric energy meter, the present application provides an electric energy meter.

[0006] The electric energy meter provided in this application adopts the following technical solution: An electric energy meter comprises an electric energy meter body and a base, wherein the base is provided with wiring terminals, the wiring terminals are used to be inserted into the electric energy meter body and electrically connected to the electric energy meter body, a connection groove is provided on the surface of the electric energy meter body, the connection groove extends along the direction in which the wiring terminals are inserted into the electric energy meter body, a blocking block is provided on the surface of the electric energy meter body with the connection groove, the blocking block shields part of the opening of the connection groove toward the base, and a connection block is provided on the base, the connection groove is used for the connection block to be inserted.

[0007] By adopting the above technical solution, when installing the electric energy meter, first fix the base on the wall or in the meter box, connect the wires to the corresponding terminals, and then insert the meter body into the base, insert the terminals into the meter body, and insert the connection block into the connection slot. The blocking block plays a role in preventing the connection block from moving out of the connection slot. Through the cooperation between the blocking block and the connection block and the cooperation between the terminal and the meter body, the connection of the meter body to the base is effectively reduced.

[0008] When inspecting and replacing the energy meter, there is no need to disconnect the wires from the base. When safety is confirmed, the meter body can be directly pulled out to allow the wiring terminals to be pulled out of the meter body and the connection block to be pulled out of the connection slot. Compared with disconnecting the wires from the energy meter one by one, this design greatly improves the convenience of inspecting and replacing the energy meter.

[0009] Optionally, a locking protrusion is provided on the connecting block, and a locking groove for inserting the locking protrusion is provided on the blocking block, and the connecting block is deformable.

[0010] By adopting the above technical solution, when the connection block is inserted into the connection groove, the connection block drives the locking protrusion to be inserted into the connection groove together, the locking protrusion presses on the blocking block, and the connection block is deformed in the direction away from the blocking block until the locking protrusion is aligned with the locking groove. At this time, the connection block is restored, and the locking protrusion is inserted into the locking groove, thereby realizing the connection and locking between the meter body and the base.

[0011] Optionally, a clearance groove is opened on the surface of the base, and the locking groove passes through the blocking block toward the clearance groove. When the locking protrusion is inserted into the locking groove, the clearance groove is aligned with and connected to the locking groove.

[0012] By adopting the above technical solution, when separating the electric meter body and the base, the end of the hook-shaped structure is inserted into the clearance groove, and then the end of the hook-shaped structure is inserted into the locking groove to push the locking protrusion out of the locking groove, so that the electric meter body and the base can be separated. The setting of the clearance groove makes it easier for the unlocking tool to unlock the connection between the electric meter body and the base.

[0013] Optionally, a guide groove is provided on the base, and the guide groove extends along the direction in which the wiring terminal is inserted into the meter body and is used for inserting the blocking block.

[0014] By adopting the above technical solution, when the wiring terminal is inserted into the meter body and the connecting block is inserted into the connecting groove, the blocking block is inserted into the guide groove, thereby guiding the relative movement between the meter body and the base, which helps the wiring terminal to be inserted into the meter body and the connecting block to be inserted into the connecting groove.

[0015] Optionally, a heat dissipation baffle is provided on the base at one end, heat dissipation holes are provided on the heat dissipation baffle, and the heat dissipation baffle is used to shield the wiring terminals. A bottom cover is provided on the meter body at one end, which is rotatably provided on the meter body. Bolt seats are provided on the meter body and the bottom cover. The bolt seats on the meter body pass through the heat dissipation baffle. The bottom cover is provided on the heat dissipation baffle and shields the heat dissipation holes. Bolt holes are provided on the bolt seats, and the bolt holes on the bolt seats on the bottom cover and the meter body are aligned.

[0016] By adopting the above technical solution, before the meter body is installed on the base, first turn the heat dissipation baffle to open, turn the bottom cover to open, and then install the meter body on the base. Then turn the heat dissipation baffle to cover the wiring terminals, and the heat dissipation holes allow the heat from the wiring terminals to dissipate outward. The bottom cover is set on the heat dissipation baffle to prevent dust from entering the meter body through the heat dissipation holes and adhering to the wiring terminals. Finally, the bolts are installed in the bolt holes and tightened to connect the bottom cover with the bolt seat, thereby limiting the rotation of the bottom cover relative to the bolt seat, and the base limits the rotation of the heat dissipation baffle relative to the base. This arrangement not only hides the wiring terminals for protection, but also ensures the heat dissipation effect of the wiring terminals.

[0017] Optionally, a positioning block is provided on the surface of the electric meter body, and both the positioning block and the bottom cover can be deformed. One of the surfaces on the positioning block is a positioning surface, and the positioning surface is used to contact the bottom cover. When the positioning surface contacts the bottom cover, the bottom cover is separated from the heat dissipation baffle.

[0018] By adopting the above technical solution, when opening the bottom cover, the bottom cover is rotated so that the bottom cover is deformed and passes over the positioning block. The positioning surface acts as a limit stop for the bottom cover, limiting the bottom cover from reversing and restoring. When the bottom cover contacts the positioning surface, the bottom cover is separated from the heat dissipation baffle. That is, under the action of the positioning block, the bottom cover can remain in an open state, which is convenient for maintenance operations without disassembling the meter body.

[0019] Optionally, an unlocking mechanism is also included, which includes an unlocking handle, an unlocking block connected to the unlocking handle, and a reset spring for resetting the unlocking handle. The locking groove penetrates the blocking block along the direction in which the locking protrusion is inserted into the locking groove. The unlocking handle is slidably arranged on the meter body along the penetration direction of the locking groove. The unlocking block can be moved to extend into the locking groove and is used to interfere with the locking protrusion. The reset spring is used to drive the unlocking block out of the locking groove.

[0020] By adopting the above technical solution, compared with inserting a hook-shaped tool into the locking groove to push the locking protrusion out of the locking groove when disassembling the electric meter body, the unlocking handle and the unlocking block are directly arranged on the electric meter body, so that when disassembling the electric meter body, by directly pulling the unlocking handle, the unlocking block is inserted into the locking groove and the locking protrusion is pushed out of the locking groove, the locking contact between the electric meter body and the base can be achieved, and the electric meter body and the base are easily separated. After the force applied to the unlocking handle is removed, the unlocking handle is reset under the action of the reset spring, and the unlocking block is moved out of the locking groove, so that the electric meter body can be reinstalled and used.

[0021] Optionally, the unlocking mechanism further includes a locking assembly, which includes a linkage block, a stop block, a stop spring and a chain rope, the linkage block being connected to the unlocking handle, the stop block being slidably arranged on the meter body, the sliding direction of the stop block being perpendicular to the sliding direction of the unlocking block, the stop block being located on the moving path of the linkage block and being used to abut against a side of the linkage block away from the locking protrusion, a retraction slope being provided on one end of the stop block along its own sliding direction, the retraction slope being used to abut against the linkage block, one end of the chain rope being connected to the stop block, the other end of the chain rope being connected to the bottom cover, the stop spring being arranged on the stop block and being used to drive the stop block to be reset to the moving path of the linkage block; When the bottom cover is arranged on the heat dissipation baffle and the stop block is located on the side of the linkage block away from the locking protrusion, the locking protrusion is located on the moving path of the linkage block and the retreat slope is staggered with the linkage block; When the bottom cover is opened and the stop block is located at a side of the linkage block away from the locking protrusion, the retreat slope is located on the moving path of the linkage block.

[0022] By adopting the above technical solution, when separating the meter body and the base, the bolts need to be unscrewed from the bolt holes first, and then the bottom cover and the heat dissipation baffle are opened successively. After the bottom cover is opened, the bottom cover drives one end of the chain rope to move, and the stop block is moved through the chain rope, so that the stop block moves to the retreat slope located on the moving path of the linkage block. At this time, the unlocking handle is pulled, the linkage block moves to press against the retreat slope and the stop block is further moved, so as to push the stop block out of the moving path of the linkage block, so that the unlocking handle can be further moved to the unlocking block inserted into the locking groove. After separating the telegraph body and the base, the force applied to the unlocking handle is removed, and the unlocking handle is reset under the action of the reset spring, thereby driving the linkage block to reset. Under the action of the stop spring, the stop block is reset to the retreat slope and moves to the moving path of the linkage block. After closing the bottom cover, under the action of the stop spring, the stop block is completely reset to the stop block located on the side of the linkage block away from the unlocking block, so as to limit the movement of the stop block and the unlocking handle.

[0023] With this arrangement, the bottom cover needs to be opened before the unlocking handle can be pulled, which increases the difficulty for non-staff to remove the meter body without understanding the disassembly mechanism, thus playing an anti-theft role.

[0024] Optionally, a check groove for inserting the end of the stop block is formed on the linkage block, and when the end of the stop block is inserted in the check groove, the unlocking block is inserted in the locking groove.

[0025] By adopting the above technical solution, when separating the meter body from the base, first open the bottom cover, then move the unlocking handle to align with the non-return groove and the stop block, and under the action of the stop spring, the stop block is inserted into the non-return groove, thereby locking the unlocking handle to limit the reset of the unlocking handle until the unlocking block moves out of the locking groove. In this way, when separating the meter body from the base, there is no need to apply force to the unlocking handle while pulling out the meter body. You only need to unlock it with the unlocking handle first, and then pull out the meter body, which is convenient for the staff to perform the separation operation of the meter body and the base.

[0026] Optionally, the unlocking mechanism also includes an unlocking component, which includes an unlocking button, an unlocking push block and a hinged plate. The unlocking push block is slidably arranged on the unlocking handle along the sliding direction of the stop block. The unlocking push block can extend into the check groove and is used to push the stop block out of the check groove. The unlocking button is slidably arranged on the unlocking handle along a direction perpendicular to the sliding direction of the unlocking push block. One end of the hinged plate is hinged to the unlocking button, and the other end of the hinged plate is hinged to the unlocking push block.

[0027] By adopting the above technical solution, after the electric meter body is separated from the base, the unlocking button is pressed, and under the action of the hinged piece, the unlocking push block moves and pushes the stop block out of the check groove. In this way, the unlocking handle can be moved on the electric meter body, and the unlocking handle is moved to move the unlocking block out of the locking groove and reset. This arrangement makes it easy to unlock the unlocking handle so that the electric meter body can be installed again.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. The electric energy meter is divided into a base connected to the wire and a meter body installed on the base, and the base and the meter body are electrically and detachably connected through structures such as wiring terminals, connection blocks, connection slots and blocking blocks, which greatly improves the convenience of maintenance and replacement of the electric energy meter; 2. The heat dissipation baffle and the bottom cover cooperate with each other to shield and protect the wiring terminals while limiting the heat dissipation as much as possible, and can also effectively limit the dust from adhering to the heat dissipation terminals; 3. The unlocking mechanism improves the convenience of separating the meter body from the base. Secondly, it also prevents theft because the bottom cover must be opened before the unlocking handle can be moved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of Example 1 of the present application.

[0030] Figure 2 It is a structural schematic diagram highlighting the base in Example 1 of the present application.

[0031] Figure 3It is a structural schematic diagram highlighting the electric meter body in Example 1 of the present application.

[0032] Figure 4 It is a schematic diagram of the structure when the bottom cover is opened in Example 1 of the present application.

[0033] Figure 5 It is a structural schematic diagram highlighting the connection groove and the blocking block in Example 1 of the present application.

[0034] Figure 6 It is a partial cross-sectional view highlighting the locking protrusion in Example 1 of the present application.

[0035] Figure 7 It is a structural diagram of Example 2 of the present application.

[0036] Figure 8 It is a schematic diagram of the structure in which the unlocking handle is removed in Example 2 of the present application.

[0037] Fig. 9 yes Figure 7 A magnified schematic diagram of center A.

[0038] Fig.10 It is a schematic diagram of the partial structure highlighting the unlocking mechanism in Example 2 of the present application.

[0039] Description of reference numerals: 1. Base; 11. Terminal block; 12. Heat dissipation baffle; 121. Heat dissipation hole; 13. Guide groove; 14. Connection block; 141. Locking protrusion; 15. Displacement groove; 2. Meter body; 21. Bottom cover; 22. Positioning block; 221. Positioning surface; 23. Connection groove; 24. Blocking block; 241. Locking groove; 25. Sliding groove; 26. Linkage groove; 27. Stop groove; 3. Bolt seat; 31. Bolt hole; 4. Unlocking mechanism; 4 1. Unlocking handle; 411. Button slot; 412. Ejection slot; 42. Unlocking block; 43. Reset spring; 44. Interlocking assembly; 441. Linkage block; 4411. Check slot; 442. Stop block; 4421. Retracting slope; 4422. Auxiliary slope; 443. Chain rope; 444. Stop spring; 45. Unlocking assembly; 451. Unlocking button; 452. Unlocking push block; 453. Hinge sheet; 454. Unlocking spring. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-10 This application is described in further detail.

[0041] The embodiment of the present application discloses an electric energy meter.

[0042] Embodiment 1: Reference Figure 1The electric energy meter includes a base 1 and an electric energy meter body 2 for being installed on the base 1. The base 1 is for being installed on a wall or in an electric energy meter box.

[0043] Reference Figure 2 A plurality of wiring terminals 11 are fixed on the base 1, and the wiring terminals 11 are used to connect with electric wires. A heat dissipation shield 12 is provided on the base 1, and the heat dissipation shield 12 is used to shield the wiring terminals 11. The lower end of the heat dissipation shield 12 is hinged on the base 1, and the heat dissipation shield 12 is turned downward to the opening direction of the heat dissipation shield 12, and a plurality of heat dissipation holes 121 penetrating the heat dissipation shield 12 are provided on the heat dissipation shield 12.

[0044] Reference Figure 2 , Figure 3 , a hole corresponding to the wiring terminal 11 is opened on the bottom wall of the meter body 2 and is used for the wiring terminal 11 to be inserted. After the wiring terminal 11 is inserted into the meter body 2, it can be electrically connected to the meter body 2. A bottom cover 21 is provided on the meter body 2, and the bottom cover 21 is covered on the heat dissipation baffle 12 and covers the heat dissipation hole 121. The upper end of the bottom cover 21 is hinged on the meter body 2, and the bottom cover 21 turns upward to the opening direction of the bottom cover 21. Positioning blocks 22 are integrally formed on the two back side walls of the meter body 2, and the positioning blocks 22 and the base 1 are both made of plastic and can be deformed. The surface of the positioning block 22 away from the base 1 is a positioning surface 221, and the positioning surface 221 is used to collide with the bottom cover 21. When the positioning surface 221 collide with the bottom cover 21, the bottom cover 21 is separated from the heat dissipation baffle 12, and the bottom cover 21 is in an open state. When the bottom cover 21 is covered on the heat dissipation baffle 12, the bottom cover 21 is in a closed state.

[0045] Reference Figure 3 , Figure 4 The meter body 2 and the bottom cover 21 are both integrally formed with a bolt seat 3, the bolt seat 3 on the meter body 2 penetrates the heat dissipation baffle 12, and bolt holes 31 are opened on the bolt seat 3 on the meter body 2 and the bolt seat 3 on the bottom cover 21. The bolt hole 31 on the bolt seat 3 on the bottom cover 21 is used for the rod of the bolt to pass through, and the bolt hole 31 on the bolt seat 3 on the meter body 2 is used for threaded connection with the bolt.

[0046] Reference Figure 2 , Figure 4 When the meter body 2 is electrically connected to the base 1, the meter body 2 is aligned with the wiring terminal 11 and inserted downward so that the wiring terminal 11 is inserted into the meter body 2. Then the heat dissipation shield 12 is turned up, the heat dissipation shield 12 shields the wiring terminal 11, and the bolt seat 3 on the meter body 2 passes through the heat dissipation shield 12. Then the bottom cover 21 is turned down, the bottom cover 21 contacts and shields the heat dissipation shield 12. Finally, the bolts are inserted into the bolt holes 31 and tightened to limit the bottom cover 21 from opening, and the heat dissipation shield 12 can be limited to rotate and open through the bottom cover 21.

[0047] Reference Figure 2 , Figure 5 Two connection grooves 23 are provided on the surface of the meter body 2. The connection grooves 23 extend in the direction in which the connection terminal 11 is inserted into the meter body 2, that is, the connection grooves 23 extend in the vertical direction, and the connection grooves 23 pass through the meter body 2 upward. Two blocking blocks 24 are integrally formed on the surface of the meter body 2 with the connection grooves 23. The blocking blocks 24 are arranged corresponding to the connection grooves 23, and the blocking blocks 24 cover the opening of the corresponding connection grooves 23 toward the meter body 2. The blocking blocks 24 are provided with locking grooves 241, which pass through the blocking blocks 24 and communicate with the connection grooves 23.

[0048] Reference Figure 2 , Figure 6 Two guide grooves 13 are provided on the upper surface of the base 1 corresponding to the blocking block 24. The guide grooves 13 extend in the direction in which the connecting terminal 11 is inserted into the meter body 2. The guide grooves 13 penetrate the base 1 upward. The two guide grooves 13 are respectively used for different blocking blocks 24 to be inserted and slided. A connecting block 14 is integrally formed on the bottom wall of the guide groove 13. The connecting groove 23 is used for the connecting block 14 to be inserted. A locking protrusion 141 is integrally formed on the connecting block 14. The locking protrusion 141 is hemispherical. When the connecting block 14 is inserted into the connecting groove 23, the locking protrusion 141 is located on the side of the connecting block 14 facing the blocking block 24. The locking groove 241 is used for the locking protrusion 141 to be inserted. The connecting block 14 and the locking protrusion 141 are both made of plastic and can be deformed.

[0049] Reference Figure 2 , Figure 6 A clearance groove 15 is provided on the bottom wall of the guide groove 13, and the clearance groove 15 penetrates the base 1 upward. The locking groove 241 penetrates the blocking block 24 toward the clearance groove 15, and when the locking protrusion 141 is inserted into the locking groove 241, the clearance groove 15 is aligned with the locking groove 241 and communicated.

[0050] Reference Figure 6 When the meter body 2 is mounted on the base 1, the connection block 14 is aligned with the corresponding connection groove 23 and inserted into the corresponding connection groove 23, and the blocking block 24 is aligned with the corresponding guide groove 13 and inserted into the corresponding guide groove 13. The locking protrusion 141 presses against the blocking block 24 and deforms the connection block 14, so that the end of the connection block 14 provided with the locking protrusion 141 swings until the locking protrusion 141 is aligned with the locking groove 241. At this time, the connection block 14 is restored, and the locking protrusion 141 is inserted into the locking groove 241.

[0051] The implementation principle of the embodiment 1 of the present application is as follows: when installing the meter body 2, first fix the base 1 on the wall or in the meter box and connect the wires to the terminal 11 on the base 1. Then insert the meter body 2 onto the base 1, insert the blocking block 24 into the guide groove 13, insert the connecting block 14 into the connecting groove 23, insert the locking protrusion 141 into the locking groove 241, and insert the terminal 11 into the meter body 2. Then rotate the heat dissipation baffle 12 so that the heat dissipation baffle 12 covers the terminal 11. Then rotate the bottom cover 21 so that the bottom cover 21 covers the heat dissipation baffle 12 and covers the heat dissipation hole 121. Finally, turn the bolts into the two bolt holes 31 and tighten them.

[0052] When separating the meter body 2 from the base 1 , first unscrew the bolts and open the bottom cover 21 and the heat dissipation baffle 12 in turn, then push the locking protrusion 141 out of the locking groove 241 , and finally pull out the meter body 2 .

[0053] With such arrangement, when the electric energy meter of the present application is inspected and replaced, there is no need to disconnect the wires from the base 1, and the electric energy meter body 2 can be directly pulled out, which greatly improves the convenience of inspecting and replacing the electric energy meter.

[0054] Embodiment 2: Reference Figure 7 , Figure 8 The difference between this embodiment and embodiment 1 is that it also includes an unlocking mechanism 4, which includes an unlocking handle 41 slidably set on the meter body 2, unlocking blocks 42 corresponding to the number of locking grooves 241, and two reset springs 43 for resetting the unlocking handle 41.

[0055] Reference Fig. 9 , Fig.10 The meter body 2 is provided with a sliding groove 25, and the unlocking handle 41 is slidably arranged in the sliding groove 25 along the direction in which the locking protrusion 141 of the unlocking block 42 is inserted into the locking groove 241. The locking groove 241 penetrates the blocking block 24 upward, and each unlocking block 42 is fixed on the unlocking handle 41. Each unlocking block 42 can move to extend into the corresponding locking groove 241 and is used to contact the locking protrusion 141. Each clearance groove 15 is used for different locking protrusions 141 to extend and slide. The reset spring 43 is arranged in the sliding groove 25, and the reset spring 43 is retracted along the moving direction of the unlocking handle 41. The reset spring 43 presses against the unlocking handle 41 and applies a force to the unlocking handle 41 to drive the unlocking block 42 to move into the clearance groove 15.

[0056] Reference Fig. 9 , Fig.10The unlocking mechanism 4 further includes a chain assembly 44, the number of which corresponds to the unlocking blocks 42, and the chain assembly 44 is used to limit the movement of the unlocking handle 41. The chain assembly 44 includes a linkage block 441 fixed on the unlocking handle 41, a stop block 442 slidably disposed on the meter body 2, a chain rope 443 for pulling the stop block 442 to move, and a stop spring 444 for driving the stop block 442 to reset.

[0057] Reference Fig. 9 , Fig.10 The meter body 2 is provided with linkage grooves 26 corresponding to the number of linkage blocks 441 and stop grooves 27 corresponding to the number of stop blocks 442 . Each linkage block 441 is slidably disposed in the corresponding linkage groove 26 , and the linkage groove 26 is connected to the sliding groove 25 .

[0058] Reference Fig. 9 , Fig.10 Each stop block 442 is slidably disposed in the corresponding stop groove 27, and the stop groove 27 is connected to the adjacent linkage groove 26. The sliding direction of the stop block 442 is perpendicular to the sliding direction of the unlocking handle 41. The stop block 442 is located on the moving path of the linkage block 441, and the stop block 442 is used to contact the side of the linkage block 441 away from the locking protrusion 141. A retracting inclined surface 4421 and an auxiliary inclined surface 4422 are provided at one end along its own moving direction. When the stop block 442 is located on the side of the linkage block 441 away from the locking protrusion 141, the retracting inclined surface 4421 faces the linkage block 441, and the auxiliary inclined surface 4422 faces away from the linkage block 441. Both the linkage inclined surface and the auxiliary inclined surface 4422 are used to contact the linkage block 441.

[0059] Reference Fig. 9 , Fig.10 The stop springs 444 in each group of interlocking components 44 are respectively arranged in different stop grooves 27. The stop springs 444 are extended and retracted along the sliding direction of the stop block 442. The stop springs 444 are pressed against the adjacent stop block 442 and are used to drive the stop block 442 to return to the moving path of the linkage block 441.

[0060] Reference Figure 8-10 The meter body 2 is provided with sliding channels corresponding to the number of the chain ropes 443, each of which is connected to a different stop groove 27, and the chain ropes 443 are slidably arranged in different sliding channels. One end of the chain rope 443 extends into the stop groove 27 and is fixed on the stop block 442, and the other end of the chain rope 443 is fixed on the bottom cover 21. When the bottom cover 21 is opened, the chain rope 443 drives the stop block 442 to move. When the bottom cover 21 is closed, the stop block 442 moves and resets under the action of the stop spring 444.

[0061] Reference Figure 8-10When the bottom cover 21 is in the closed state and the stop block 442 is located on the side of the linkage block 441 away from the locking protrusion 141, the locking protrusion 141 is located on the moving path of the linkage block 441 and the retracting inclined surface 4421 is staggered from the linkage block 441, that is, the linkage block 441 cannot collide with the retracting inclined surface 4421 when moving. When the bottom cover 21 is in the open state and the stop block 442 is located on the side of the linkage block 441 away from the locking protrusion 141, the retracting inclined surface 4421 is located on the moving path of the linkage block 441.

[0062] Reference Fig. 9 , Fig.10 The side wall of the linkage block 441 is provided with a check groove 4411 for inserting the end of the adjacent stop block 442. The unlocking mechanism 4 further includes an unlocking assembly 45, which is used to push the stop block 442 out of the check groove 4411. The unlocking assembly 45 includes an unlocking button 451 slidably arranged on the unlocking handle 41 along the vertical direction, unlocking push blocks 452 corresponding to the number of the stop blocks 442, hinged pieces 453 consistent with the number of the unlocking push blocks 452, and an unlocking spring 454 used to reset the unlocking button 451 upward.

[0063] Reference Fig. 9 , Fig.10 , the unlocking handle 41 can be moved until the linkage block 441 is aligned with the stop groove 27. When the stop block 442 is inserted into the stop groove 27, the unlocking block 42 is inserted into the locking groove 241 and the locking protrusion 141 is pushed out of the locking groove 241. The unlocking handle 41 is provided with a button groove 411 extending in the vertical direction, and the unlocking button 451 is slidably arranged in the button groove 411. The unlocking spring 454 is arranged in the button groove 411, and the unlocking spring 454 is retracted in the vertical direction, and the two ends of the unlocking spring 454 are respectively pressed against the groove wall of the button groove 411 and the unlocking button 451.

[0064] Reference Figure 7 The unlocking handle 41 is provided with an ejection groove 412, which is connected to the sliding groove 25 and the two check grooves 4411. The two unlocking push blocks 452 are slidably arranged in the ejection groove 412 along the sliding direction of the stop block 442. The two unlocking push blocks 452 are respectively located on both sides of the unlocking button 451, and the two hinged pieces 453 are respectively connected to the unlocking push blocks 452 and the unlocking button 451. One end of the hinged piece 453 is hinged to the unlocking button 451, and the other end of the hinged piece 453 is hinged to the adjacent unlocking push block 452.

[0065] The implementation principle of the second embodiment of the present application is as follows: when separating the electric meter body 2 from the base 1, the bottom cover 21 is opened first, and under the action of the chain rope 443, the stop block 442 moves to the retreat slope 4421 on the moving path of the linkage block 441. In this way, the unlocking handle 41 can be pulled, the linkage block 441 presses against the retreat slope 4421, and the stop block 442 continues to move until the check groove 4411 is aligned with the stop block 442. At this time, the unlocking block 42 moves into the unlocking groove and pushes the locking protrusion 141 out of the locking groove 241. Under the action of the stop spring 444, the stop block 442 is inserted into the stop groove 27. In this way, the unlocking handle 41 cannot move in the reverse direction, that is, the unlocking block 42 cannot move out of the unlocking groove, and the locking protrusion 141 cannot enter the locking groove 241. The staff does not need to pull the unlocking handle 41 while pulling the electric meter body 2, which improves the simplicity of operation.

[0066] After separation is completed, the unlocking button 451 is pressed, and under the action of the hinge piece 453, the unlocking push block 452 moves away from the unlocking button 451 and extends into the non-return groove 4411, and the unlocking push block 452 pushes the stop block 442 out of the non-return groove 4411. Under the action of the reset spring 43, the unlocking handle 41 is reset, and the unlocking block 42 moves out of the locking groove 241. Even if the unlocking push block 452 does not completely push the stop block 442 out of the non-return groove 4411, under the action of the auxiliary inclined surface 4422, when the unlocking handle 41 is moved by the force of the reset spring 43, the stop block 442 can still be moved out of the non-return groove 4411 and reset. Finally, the bottom cover 21 is closed, and under the action of the stop spring 444, the stop block 442 is completely reset.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electric energy meter, characterized in that: The invention comprises an electric meter body (2) and a base (1), wherein the base (1) is provided with a wiring terminal (11), wherein the wiring terminal (11) is used to be inserted into the electric meter body (2) and electrically connected to the electric meter body (2), wherein a connection groove (23) is provided on the surface of the electric meter body (2), wherein the connection groove (23) extends in the direction in which the wiring terminal (11) is inserted into the electric meter body (2), wherein a blocking block (24) is provided on the surface of the electric meter body (2) provided with the connection groove (23), wherein the blocking block (24) shields a portion of the opening of the connection groove (23) toward the base (1), and wherein a connection block (14) is provided on the base (1), wherein the connection groove (23) is used for the connection block (14) to be inserted.

2. An electric energy meter according to claim 1, characterized in that: The connection block (14) is provided with a locking protrusion (141), the blocking block (24) is provided with a locking groove (241) for the locking protrusion (141) to be inserted, and the connection block (14) is deformable.

3. An electric energy meter according to claim 2, characterized in that: A clearance groove (15) is provided on the surface of the base (1), and the locking groove (241) penetrates the blocking block (24) toward the clearance groove (15). When the locking protrusion (141) is inserted into the locking groove (241), the clearance groove (15) is aligned with and communicates with the locking groove (241).

4. The electric energy meter according to claim 1, characterized in that: The base (1) is provided with a guide groove (13), which extends along the direction in which the connection terminal (11) is inserted into the meter body (2) and is used for inserting a blocking block (24).

5. An electric energy meter according to claim 2, characterized in that: The base (1) is provided with a heat dissipation baffle (12) with one end rotatably mounted on the base (1), the heat dissipation baffle (12) is provided with heat dissipation holes (121), the heat dissipation baffle (12) is used to shield the wiring terminal (11), the meter body (2) is provided with a bottom cover (21) with one end rotatably mounted on the meter body (2), the meter body (2) and the bottom cover (21) are both provided with bolt seats (3), the bolt seats (3) on the meter body (2) penetrate the heat dissipation baffle (12), the bottom cover (21) is covered on the heat dissipation baffle (12) and shields the heat dissipation holes (121), the bolt seats (3) are each provided with bolt holes (31), and the bottom cover (21) is aligned with the bolt holes (31) on the bolt seats (3) on the meter body (2).

6. An electric energy meter according to claim 5, characterized in that: A positioning block (22) is provided on the surface of the electric meter body (2); the positioning block (22) and the bottom cover (21) are both deformable; one of the surfaces on the positioning block (22) is a positioning surface (221); the positioning surface (221) is used to abut against the bottom cover (21); when the positioning surface (221) abuts against the bottom cover (21), the bottom cover (21) is separated from the heat dissipation baffle (12).

7. An electric energy meter according to claim 6, characterized in that: The invention also comprises an unlocking mechanism (4), the unlocking mechanism (4) comprising an unlocking handle (41), an unlocking block (42) connected to the unlocking handle (41), and a reset spring (43) for resetting the unlocking handle (41); the locking groove (241) penetrates the blocking block (24) along the direction in which the locking protrusion (141) is inserted into the locking groove (241); the unlocking handle (41) is slidably arranged on the electric meter body (2) along the penetration direction of the locking groove (241); the unlocking block (42) can be moved to extend into the locking groove (241) and is used to contact the locking protrusion (141); and the reset spring (43) is used to drive the unlocking block (42) to move out of the locking groove (241).

8. An electric energy meter according to claim 7, characterized in that: The unlocking mechanism (4) further comprises a locking assembly (44), the locking assembly (44) comprising a linkage block (441), a stop block (442), a stop spring (444) and a locking rope (443), the linkage block (441) being connected to the unlocking handle (41), the stop block (442) being slidably disposed on the meter body (2), the sliding direction of the stop block (442) being perpendicular to the sliding direction of the unlocking block (42), the stop block (442) being located on the moving path of the linkage block (441) and being used to move with the linkage block (443) 1) abutting against a side away from the locking protrusion (141), a retraction slope (4421) is provided on one end of the stop block (442) along its own sliding direction, the retraction slope (4421) is used to abut against the linkage block (441), one end of the chain rope (443) is connected to the stop block (442), the other end of the chain rope (443) is connected to the bottom cover (21), and the stop spring (444) is arranged on the stop block (442) and is used to drive the stop block (442) to return to the moving path of the linkage block (441); When the bottom cover (21) is covered on the heat dissipation baffle (12) and the stop block (442) is located on a side of the linkage block (441) away from the locking protrusion (141), the locking protrusion (141) is located on the moving path of the linkage block (441) and the retreat slope (4421) is staggered with the linkage block (441); When the bottom cover (21) is opened and the stop block (442) is located on a side of the linkage block (441) away from the locking protrusion (141), the retreat slope (4421) is located on the moving path of the linkage block (441).

9. An electric energy meter according to claim 8, characterized in that: The linkage block (441) is provided with a non-return groove (4411) for inserting the end of the stop block (442); when the end of the stop block (442) is inserted into the non-return groove (4411), the unlocking block (42) is inserted into the locking groove (241).

10. An electric energy meter according to claim 9, characterized in that: The unlocking mechanism (4) further comprises an unlocking assembly (45), wherein the unlocking assembly (45) comprises an unlocking button (451), an unlocking push block (452) and a hinged plate (453); the unlocking push block (452) is slidably arranged on the unlocking handle (41) along the sliding direction of the stop block (442); the unlocking push block (452) can extend into the non-return groove (4411) and is used to push the stop block (442) out of the non-return groove (4411); the unlocking button (451) is slidably arranged on the unlocking handle (41) along a direction perpendicular to the sliding direction of the unlocking push block (452); one end of the hinged plate (453) is hinged to the unlocking button (451), and the other end of the hinged plate (453) is hinged to the unlocking push block (452).

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