Electric energy meter easy to install

Abstract

A sliding groove is formed in the bottom of an electric energy meter shell, the shell is installed on an electric energy meter guide rail in a sliding mode, a pair of wire inlet holes are formed in one end of the shell, a wiring hole is formed in the top end of the shell, a wiring board used for wiring is fixedly installed in the shell, and a wire pressing mechanism is arranged above the wiring board. The binding post is movably installed in the wiring hole and penetrates through the wiring board, the binding post is provided with a wire pressing plate used for pressing wires, the compression spring is clamped at the bottom end of the binding post, the cover plate is movably clamped with the shell, and when the cover plate is closed, the cover plate abuts against the binding post and drives the wire pressing plate to press wire ends on the wiring board. According to the electric energy meter easy to install, the installation time can be greatly shortened, and therefore the installation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of electricity meters, and specifically to an electricity meter that is easy to install. Background Art

[0002] For the installation of rail-mounted electricity meters, the traditional wall-mounted installation method is generally adopted for terminal electricity metering meters, which has the disadvantages of large volume and inconvenient installation. The rail-mounted electricity meter adopts a modular design, with the advantages of small volume, easy installation, easy networking, etc., and is easy to realize terminal lighting electricity metering, and is convenient for the transformation of adding electricity meters to the lighting system.

[0003] When installing the existing rail-mounted electricity meters, first insert the wire ends into the interior of the electricity meter, and then screw in the bolts provided on the electricity meter to press the wire ends tightly, and then cover the cover plate. This process requires the operator to screw the bolts, which is time-consuming and greatly reduces the installation efficiency. In addition, in order to avoid having extra wire lengths, most of the existing rail-mounted electricity meters are wired after the electricity meter is placed on the rail, resulting in a crowded wiring space and inconvenient manual operation; therefore, it does not meet the existing requirements. Summary of the Invention

[0004] The present invention provides an electricity meter that is easy to install, with the beneficial effects of short installation time, high installation efficiency, and convenient manual operation, and solves the problems mentioned in the above background art that when installing the existing electricity meters, the operator needs to screw the bolts, which is time-consuming and greatly reduces the installation efficiency. In addition, in order to avoid having extra wire lengths, most of the existing rail-mounted electricity meters are wired after the electricity meter is placed on the rail, resulting in a crowded wiring space and inconvenient manual operation.

[0005] The present invention provides an electricity meter that is easy to install, including a housing and a rail. The housing is slidably installed on the rail. One end of the housing is provided with a pair of wire inlet holes, the top end of the housing is provided with a wiring hole, a wiring board for wiring is fixedly installed inside the housing, a wire pressing mechanism is arranged above the wiring board, the wire pressing mechanism includes a wiring post, the wiring post is movably installed in the wiring hole, and the wiring post penetrates the wiring board. A wire pressing plate for pressing the wire is arranged on the wiring post, a compression spring is arranged inside the housing, and the compression spring is clamped at the bottom end of the wiring post; A cover plate is rotatably installed at the upper end of the housing, and the cover plate is movably engaged with the housing. When the cover plate is closed, the cover plate abuts against the wiring post and drives the wire pressing plate to press the wire end tightly on the wiring board.

[0006] As an alternative embodiment of the easily installable electricity meter of the present invention, wherein: the cover plate is a transparent plastic plate with an L-shaped cross-section, a handle is installed on the surface of the cover plate, and a pair of wire clamping grooves are opened at one end of the cover plate. The wire head passes through the wire clamping grooves and is clamped on the housing by the wire clamping grooves; An observation hole is also opened at one end of the housing, and the observation hole is arranged adjacent to the wire inlet hole.

[0007] As an alternative embodiment of the easily installable electricity meter of the present invention, wherein: a pressing block is installed at the top end of the terminal post, the pressing block is a circular plate, and a first rubber pad is installed on the pressing block; A limiting block is installed at the bottom of the terminal post, and the upper end of the compression spring abuts against the bottom end of the limiting block.

[0008] As an alternative embodiment of the easily installable electricity meter of the present invention, wherein: an installation seat is arranged inside the housing, the bottom end of the compression spring is installed on the installation seat, a threaded hole is opened at the top end of the installation seat, and a threaded section is arranged at the bottom end of the terminal post. The threaded section is rotatably installed in the threaded hole; A driven gear is rotatably installed at the bottom end of the wiring board, the driven gear is in transmission connection with the cover plate through a transmission mechanism, a key groove is opened on the driven gear, and a key block is installed on one side of the terminal post. The key block is slidably engaged with the key groove.

[0009] As an alternative embodiment of the easily installable electricity meter of the present invention, wherein: a rotating shaft is fixedly installed at the hinged end of the cover plate, the rotating shaft is rotatably installed with the housing, and first bevel gears are respectively installed at both ends of the rotating shaft. The first bevel gears are in transmission connection with the driven gear through the transmission mechanism.

[0010] As an alternative embodiment of the easily installable electricity meter of the present invention, wherein: the transmission mechanism includes a rotating rod, the rotating rod is rotatably installed inside the housing, a second bevel gear is installed at one end of the rotating rod, and the second bevel gear is engaged with the first bevel gear; A driving gear is installed at the other end of the rotating rod, a transmission gear is rotatably installed inside the housing, the transmission gear is engaged with the driving gear, and the transmission gear is also engaged with the driven gear.

[0011] As an alternative embodiment of the easily installable electricity meter according to the present invention, wherein: a cross plate is installed on the terminal post, a wire winding mechanism is arranged on the cross plate, the wire winding mechanism includes a first sleeve, the first sleeve is installed on the cross plate, a first spring is arranged inside the first sleeve, a first moving column is slidably installed inside the first sleeve, the top end of the first moving column is in contact with the bottom end of the first spring, a pressing block is installed at the bottom of the first moving column, the pressing block is set in an arched shape, and a second rubber pad is installed at the bottom end of the pressing block; When not in use, the pressing block is arranged corresponding to the wire inlet hole.

[0012] As an alternative embodiment of the easily installable electricity meter according to the present invention, wherein: a fixed sleeve is installed at the upper end of the wiring board, and the fixed sleeve is arranged around the terminal post.

[0013] As an alternative embodiment of the easily installable electricity meter according to the present invention, wherein: a second sleeve is further installed on the cross plate, and a second spring is arranged inside the second sleeve; The pressing plate is set as an annular plate, and the inner diameter of the pressing plate is equal to the outer diameter of the fixed sleeve. A second moving column is installed at the upper end of the pressing plate, the second moving column is slidably installed in the second sleeve, and the top end of the second moving column is in contact with the bottom end of the second spring.

[0014] As an alternative embodiment of the easily installable electricity meter according to the present invention, wherein: a wire pipe is arranged on the wiring board, one end of the wire pipe is connected to the wire inlet hole, the other end of the wire pipe is directly opposite to the pressing block, and the inner diameter of the wire inlet of the wire pipe is larger than the inner diameter of the wire outlet.

[0015] The present invention has the following beneficial effects:

[0016] 1. Since the electricity meter is provided with a wire inlet hole and an observation hole, the wire inlet hole is used for inserting the wire head, and the wiring condition inside the electricity meter can be observed through the observation hole and the transparent cover plate. After inserting the wire head into the wire inlet hole during wiring, directly cover the cover plate, so that the terminal post moves downward. There is a pressing plate for pressing the wire on the terminal post. When the terminal post moves downward, the pressing plate moves downward accordingly, so that the pressing plate presses the wire head on the wiring board to complete the wiring operation. In this process, the operator only needs to insert the wire head and then cover the cover plate, without the operation of screwing in bolts, thus reducing the installation time and being convenient for manual operation.

[0017] 2. The cover is rotatably installed on the electric energy meter, and the cover is connected to the driven gear through a transmission mechanism. When the cover rotates, the driven gear is driven to rotate, and the driven gear and the terminal are slidably engaged. Therefore, when the driven gear rotates, the terminal also rotates. A threaded section is provided at the bottom end of the terminal, and the threaded section is threadedly installed in the threaded hole on the mounting seat. The mounting seat has a limiting effect on the terminal, and when the cover is opened, the bottom end of the terminal is still installed in the threaded hole. Therefore, when the cover is opened, the terminal will not pop out under the action of the compression spring. When the operator opens the cover again for inspection of the electric meter, there is no need to re-position the terminal, thereby increasing the practicality of the device, while enhancing the stability of the wiring, and the wire head is not easy to loosen and slip, thereby increasing the reliability of the device.

[0018] 3. A horizontal plate is installed on the terminal post, and a winding mechanism is installed on the horizontal plate. When the terminal post moves downward, the arched wire pressing block will press the wire end. When the terminal post rotates, the wire pressing block will drag the wire end to rotate with it, and roll the wire end on the fixed sleeve and be pressed by the pressing plate. Compared with the pressing plate directly pressing the wire end, the wire end is wound and then pressed, which increases the contact area between the wire end and the terminal board, thereby preventing the wire end from loosening and poor wiring, and further increasing the reliability of the device; In addition, the wire pressing plate is set as an annular plate, and the inner diameter of the annular plate is equal to the outer diameter of the fixed sleeve, so as to ensure that the wire pressing plate can move down smoothly and press the wire end. Since the displacement of the terminal is fixed, a second spring is arranged above the wire pressing plate. When the diameter of the wire end is thin, under the action of the second spring, the wire pressing plate can also press the wire end, thereby reducing the occurrence of loose wire ends and poor wiring, and further increasing the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the cover plate of the present invention.

[0022] Figure 4 It is a schematic diagram of the transmission mechanism, winding mechanism, pressing mechanism and three-dimensional structure of the present invention.

[0023] Figure 5 It is a schematic cross-sectional structure diagram of the winding mechanism and the clamping mechanism of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the transmission mechanism of the present invention.

[0025] Figure 7 It is a schematic diagram of the structure of the wire tube of the present invention.

[0026] Figure 8 This is a schematic structural diagram of the terminal of the present invention.

[0027] Figure 9 This is a schematic structural diagram of the wire pressing block of the present invention.

[0028] Figure 10 This is a schematic structural diagram of the mounting base of the present invention.

[0029] Figure 11 This is an enlarged schematic structural diagram of part A of the present invention.

[0030] Figure 12 This is a schematic structural diagram after the wire is wound in the present invention.

[0031] In the figure: 100, housing; 101, chute; 102, wiring hole; 103, wire inlet hole; 104, observation hole; 200, guide rail; 300, cover plate; 301, handle; 302, wire clamping groove; 303, rotating shaft; 304, first bevel gear; 400, transmission mechanism; 401, rotating rod; 402, second bevel gear; 403, driving gear; 404, transmission gear; 405, driven gear; 406, keyway; 500, wire pressing mechanism; 501, wiring board; 502, wire pressing plate; 503, terminal; 504, limiting block; 505, compression spring; 506, pressing block; 507, first rubber pad; 508, cross plate; 509, second sleeve; 5010, second spring; 5011, second moving column; 5012, threaded section; 5013, fixed sleeve; 5014, mounting base; 5015, threaded hole; 5016, key block; 600, wire winding mechanism; 601, first sleeve; 602, first spring; 603, first moving column; 604, wire pressing block; 605, second rubber pad; 701, wire pipe. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1. The purpose of this embodiment is to solve the problem that when installing an existing electric energy meter, the operator needs to screw the bolts twice and then cover the cover plate to complete the installation, which is time-consuming and greatly reduces the installation efficiency. Please refer to Figures 1-12, An easy-to-install electricity meter, comprising a housing 100 and a guide rail 200. The housing 100 is slidably mounted on the guide rail 200. One end of the housing 100 is provided with a pair of wire inlet holes 103, and the top end of the housing 100 is provided with a wiring hole 102. A wiring board 501 for wiring is fixedly installed inside the housing 100. Above the wiring board 501, there is a wire pressing mechanism 500. The wire pressing mechanism 500 includes a wiring post 503. The wiring post 503 is slidably mounted in the wiring hole 102 and penetrates through the wiring board 501. A wire pressing plate 502 for pressing the wire is provided on the wiring post 503. A compression spring 505 is arranged inside the housing 100, and the bottom of the wiring post 503 is connected to one end of the compression spring 505. Among them, the pair of wire inlet holes 103 are used for inserting the neutral wire and the live wire. After the wire ends are inserted, the wire ends are located above the wiring board 501, and the wiring board 501 is electrically connected to the internal circuit of the electricity meter.

[0034] It should be noted that a chute 101 is provided at the bottom of the housing 100. The chute 101 is in sliding contact with the guide rail 200. A clamping mechanism (not shown in the figure) for clamping the housing 100 is provided on the guide rail 200. Therefore, the housing 100 can be selectively installed at different positions on the guide rail 200. The clamping mechanism is a common technical means and is well-known to those skilled in the art, so it will not be elaborated here.

[0035] In addition, please refer to Figure 2 , A cover plate 300 is rotatably installed at the upper end of the housing 100. The cover plate 300 is movably clamped with the housing 100. When the cover plate 300 is closed, the cover plate 300 abuts against the wiring post 503 and drives the wire pressing plate 502 to press the wire end tightly on the wiring board 501.

[0036] Moreover, please refer to Figure 3 , The cover plate 300 is set as a transparent plastic plate with an L-shaped cross-section. A handle 301 is installed on the surface of the cover plate 300. A pair of wire clamping grooves 302 are provided at one end of the cover plate 300. The wire end passes through the wire inlet hole 103 and is clamped by the wire clamping grooves 302. An observation hole 104 is also provided at one end of the housing 100. The observation hole 104 is arranged adjacent to the wire inlet hole 103. The wiring situation inside the housing 100 can be seen through the transparent cover plate 300 and the observation hole 104.

[0037] In addition, please refer to Figure 8, a pressing block 506 is installed at the top of the terminal 503. The pressing block 506 is set as a round plate, a first rubber pad 507 is installed on the pressing block 506, a limiting block 504 is installed at the bottom of the terminal 503, and the upper end of the compression spring 505 abuts against the bottom end of the limiting block 504. Among them, the combined effect of the pressing block 506 and the first rubber pad 507 is to increase the contact area between the cover plate 300 and the terminal 503. Before the cover plate 300 is closed, under the action of the compression spring 505, the wire pressing plate 502 is located above the wiring board 501. After the cover plate 300 is closed, the terminal 503 overcomes the elastic force of the compression spring 505 and moves downward until the wire pressing plate 502 presses the wire end.

[0038] In this embodiment: The cover plate 300 is set as a transparent plastic plate with an L-shaped cross-section. When the cover plate 300 is closed, it can block the wiring hole 102 and the wire inlet hole 103, having the effect of waterproofing and preventing electric shock. An observation hole 104 is also opened at one end of the housing 100. The observation hole 104 is arranged adjacent to the wire inlet hole 103. Through the transparent cover plate 300 and the observation hole 104, the wiring situation inside the housing 100 can be seen, making the device more practical. A handle 301 is installed on the surface of the cover plate 300. The opening and closing process of the cover plate 300 can be realized by controlling the handle. A pair of wire clamping grooves 302 are opened at one end of the cover plate 300. The wire end passes through the wire inlet hole 103 and is clamped by the wire clamping grooves 302, reducing the situation that the wire is prone to falling off later. Specifically, when an operator installs the electric energy meter, first insert the zero wire and the live wire into the wire inlet hole 103 respectively, and then cover the cover plate 300. The cover plate 300 abuts against the terminal 503, and a pressing block 506 is installed at the top of the terminal 503. The pressing block 506 is set as a round plate, and a first rubber pad 507 is installed on the pressing block 506. After the first rubber pad 507 abuts against the cover plate 300, it deforms, thereby increasing the contact area between the cover plate 300 and the terminal 503. Then make the terminal 503 move downward, and the wire pressing plate 502 moves downward at the same time until the wire pressing plate 502 presses the wire end, thus completing the wiring operation. In this process, the installer only needs to perform the operations of inserting the stripped wire and covering the cover plate 300, without needing to screw bolts, thereby greatly reducing the installation time and improving the installation efficiency.

[0039] Embodiment 2. The purpose of this embodiment is to facilitate the solution of the problem that when the cover plate 300 is opened, the terminal 503 will pop out under the action of the compression spring 505, and the installer still needs to reposition the terminal 503. This embodiment is an improvement made on the basis of Embodiment 1. Specifically, please refer to Figures 1-12, a mounting base 5014 is provided inside the housing 100. The bottom end of the compression spring 505 is mounted on the mounting base 5014. A threaded hole 5015 is provided at the top end of the mounting base 5014. A threaded section 5012 is provided at the bottom end of the terminal post 503. The threaded section 5012 is rotatably mounted in the threaded hole 5015. A driven gear 405 is rotatably mounted at the bottom end of the wiring board 501. The driven gear 405 is drivingly connected to the cover plate 300 through a transmission mechanism 400. A keyway 406 is provided on the driven gear 405. A key block 5016 is mounted on one side of the terminal post 503. The key block 5016 is slidably engaged with the keyway 406.

[0040] Specifically, please refer to Figure 3 , one end of the cover plate 300 is fixedly mounted with a rotating shaft 303. The rotating shaft 303 is rotatably mounted inside the housing 100. First bevel gears 304 are respectively mounted at both ends of the rotating shaft 303. The first bevel gears 304 are drivingly connected to the driven gear 405 through a transmission mechanism 400.

[0041] Among them, please refer to Figure 4 , Figure 5 , Figure 6 , the transmission mechanism 400 includes a rotating rod 401. The rotating rod 401 is rotatably mounted inside the housing 100. A second bevel gear 402 is mounted at one end of the rotating rod 401. The second bevel gear 402 meshes with the first bevel gear 304. A driving gear 403 is mounted at the other end of the rotating rod 401. A transmission gear 404 is meshed with one side of the driving gear 403. The transmission gear 404 is rotatably mounted inside the housing 100. The transmission gear 404 meshes with the driven gear 405.

[0042] In this embodiment: The cover plate 300 is rotatably mounted at the upper end of the housing 100, and the cover plate 300 is drivingly connected to the driven gear 405 through the transmission mechanism 400. When the cover plate 300 rotates, it will drive the driven gear 405 to rotate. The driven gear 405 and the terminal post 503 are slidably engaged. Therefore, when the driven gear 405 rotates, the terminal post 503 also rotates accordingly. A threaded section 5012 is provided at the bottom end of the terminal post 503. The threaded section 5012 is threadedly mounted in the threaded hole 5015 on the mounting base 5014. The mounting base 5014 has a limiting effect on the terminal post 503. And when the cover plate 300 is opened, the bottom end of the terminal post 503 is still mounted in the threaded hole 5015. Therefore, when the cover plate 300 is opened, the terminal post 503 will not pop out under the action of the compression spring 505. After the operator opens the cover plate 300 for inspection, there is no need to reposition the terminal post 503, thereby increasing the practicability of this device.

[0043] Embodiment 3. This embodiment aims to facilitate the solution to the problem that the wire pressing plate 502 simply presses the wire end on the wiring board 501, which easily causes the wire end to become loose and have poor contact. This embodiment is an improvement made on the basis of Embodiment 2. Specifically, please refer to Figures 1-12 . A cross plate 508 is installed on the terminal post 503. A wire winding mechanism 600 is arranged on the cross plate 508. The wire winding mechanism 600 includes a first sleeve 601. The top end of the first sleeve 601 is installed on the cross plate 508. A first spring 602 is arranged in the first sleeve 601. A first moving column 603 is slidably installed in the first sleeve 601. The top end of the first moving column 603 contacts the bottom end of the first spring 602. A wire pressing block 604 is installed at the bottom of the first moving column 603. The wire pressing block 604 is set in an arch shape. A second rubber pad 605 is installed at the bottom end of the wire pressing block 604. The wire pressing block 604 is arranged opposite to the wire inlet hole 103.

[0044] It should be noted that, please refer to Figure 5 、 Figure 8 、 Figure 9 . After the wire pressing block 604 presses the wire end, it will rotate along with the terminal post 503, and the wire pressing block 604 will drive the wire end to complete winding. In order to prevent some wire bundles in the wire end from overflowing from the gap between the wire pressing block 604 and the wiring board 501 during the winding process, a second rubber pad 605 is installed at the bottom end of the wire pressing block 604, so that the wire pressing block 604 and the wiring board 501 are closely attached. In addition, since the maximum downward displacement of the cross plate 508 is determined, a first spring 602 is arranged above the wire pressing block 604 to adapt to wire ends of different sizes and increase the practicability of this device.

[0045] A fixed sleeve 5013 is installed at the upper end of the wiring board 501. The fixed sleeve 5013 is arranged around the terminal post 503. The wound wire end will be wound on the fixed sleeve to prevent the wire end from being pulled into the key groove 406 and causing blockage when the terminal post 503 moves downward.

[0046] In addition, please refer to Figure 5 、 Figure 8 . A second sleeve 509 is also installed on the cross plate 508. A second spring 5010 is arranged in the second sleeve 509. The wire pressing plate 502 is set as an annular plate, and the inner diameter of the wire pressing plate 502 is equal to the outer diameter of the fixed sleeve 5013. A second moving column 5011 is installed at the upper end of the wire pressing plate 502. The second moving column 5011 is slidably installed in the second sleeve 509, and the top end of the second moving column 5011 contacts the bottom end of the second spring 5010.

[0047] A wire conduit 701 is provided on the wiring board 501. One end of the wire conduit 701 is connected to the wire inlet hole 103, and the other end of the wire conduit 701 faces the pressure block 604. Moreover, the inner diameter of the wire inlet of the wire conduit 701 is larger than the inner diameter of the wire outlet. Since the wire heads are relatively loose between the wire harnesses before wiring, the wire conduit 701 has a certain aggregating effect on the wire heads, facilitating the pressure block 604 to completely press the wire heads. In addition, the wire conduit 701 also has a guiding effect on the wire heads, such that when the wire heads are inserted into the housing 100, the wire heads are just located on one side of the pressure block 604.

[0048] In this embodiment: A cross plate 508 is installed on the terminal 503, and a wire winding mechanism 600 is installed on the cross plate 508. When the terminal 503 moves downward, the arched pressure block 604 will press the wire head. At the same time, the terminal 503 rotates, and the pressure block 604 drags the wire head to rotate accordingly, and winds the wire head around the fixed sleeve 5013 and is pressed by the pressing plate. Compared with the pressing plate directly pressing the wire head in the second embodiment, in this embodiment, the wire head is wound and then pressed, increasing the contact area between the wire head and the wiring board 501, thereby preventing the wire head from loosening and poor wiring, and increasing the reliability of the device. Moreover, the pressing plate 502 is set as an annular plate, and the inner diameter of the annular plate is equal to the outer diameter of the fixed sleeve 5013, so as to ensure that the pressing plate 502 can move downward smoothly and press the wire head. Since the displacement of the terminal 503 is fixed, a second spring 5010 is provided above the pressing plate 502. When the diameter of the wire head is relatively small, under the action of the second spring 5010, it can also ensure that the pressing plate 502 presses the wire head, reducing the occurrence of wire head loosening and poor wiring, and further increasing the reliability of the device.

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0050] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An electricity meter that is easy to install, comprising a housing (100) and a rail (200), the housing (100) is slidably mounted on the rail (200), one end of the housing (100) is provided with a pair of wire inlet holes (103), and the top end of the housing (100) is provided with a wiring hole (102), characterized in that: A wiring board (501) for wiring is fixedly installed in the housing (100), a wire pressing mechanism (500) is arranged above the wiring board (501), the wire pressing mechanism (500) comprises a terminal (503), the terminal (503) is movably installed in the wiring hole (102), and the terminal (503) is inserted into the wiring board (501), a wire pressing plate (502) for wire pressing is arranged on the terminal (503), and a compression spring (505) is arranged inside the housing (100), and the compression spring (505) is clamped at the bottom end of the terminal (503); A cover plate (300) is rotatably mounted on the upper end of the housing (100), and the cover plate (300) is movably engaged with the housing (100). When the cover plate (300) is closed, the cover plate (300) contacts the terminal post (503) and drives the wire pressing plate (502) to press the wire end onto the terminal board (501).

2. The easily installable electric energy meter according to claim 1, wherein: The cover plate (300) is configured as a transparent plastic plate with an L-shaped cross section. A handle (301) is mounted on the surface of the cover plate (300). A pair of wire clamping grooves (302) are provided at one end of the cover plate (300). The wire ends pass through the wire clamping grooves (302) and are clamped on the housing (100) by the wire clamping grooves (302). An observation hole (104) is also provided at one end of the housing (100), and the observation hole (104) is arranged adjacent to the wire entry hole (103).

3. The easy-to-install electric energy meter according to claim 1, characterized in that: A pressing block (506) is installed at the top of the terminal (503), the pressing block (506) is set as a circular plate, and a No. 1 rubber pad (507) is installed on the pressing block (506); A limit block (504) is installed at the bottom of the terminal post (503), and the upper end of the compression spring (505) is in conflict with the bottom end of the limit block (504).

4. The easy-to-install electricity meter according to claim 1, characterized in that: A mounting seat (5014) is provided in the housing (100), the bottom end of the compression spring (505) is mounted on the mounting seat (5014), a threaded hole (5015) is provided at the top end of the mounting seat (5014), a threaded section (5012) is provided at the bottom end of the terminal (503), and the threaded section (5012) is rotatably mounted in the threaded hole (5015); A driven gear (405) is rotatably mounted on the bottom end of the terminal block (501), and the driven gear (405) is transmission-connected to the cover plate (300) via the transmission mechanism (400). A key slot (406) is provided on the driven gear (405), and a key block (5016) is mounted on one side of the terminal post (503), and the key block (5016) is slidably engaged with the key slot (406).

5. The easy-to-install electric energy meter according to claim 4, wherein: A rotating shaft (303) is fixedly mounted on the hinged end of the cover plate (300), and the rotating shaft (303) is rotatably mounted on the housing (100). First bevel gears (304) are respectively mounted on both ends of the rotating shaft (303), and the first bevel gear (304) is transmission-connected to a driven gear (405) via a transmission mechanism (400).

6. The easy-to-install electric energy meter according to claim 5, characterized in that: The transmission mechanism (400) comprises a rotating rod (401), the rotating rod (401) being rotatably mounted inside the housing (100), a second bevel gear (402) being mounted on one end of the rotating rod (401), and the second bevel gear (402) being meshed with the first bevel gear (304); The other end of the rotating rod (401) is provided with a driving gear (403), and a transmission gear (404) is rotatably installed inside the housing (100). The transmission gear (404) meshes with the driving gear (403), and the transmission gear (404) also meshes with a driven gear (405).

7. The easy-to-install electricity meter according to claim 1, characterized in that: A cross plate (508) is installed on the terminal block (503). A wire winding mechanism (600) is arranged on the cross plate (508). The wire winding mechanism (600) includes a first sleeve (601). The first sleeve (601) is installed on the cross plate (508). A first spring (602) is arranged inside the first sleeve (601). A first moving column (603) is slidably installed inside the first sleeve (601). The top end of the first moving column (603) contacts the bottom end of the first spring (602). A wire pressing block (604) is installed at the bottom of the first moving column (603). The wire pressing block (604) is set to be arched. A second rubber pad (605) is installed at the bottom end of the wire pressing block (604); When not in use, the wire pressing block (604) is arranged corresponding to the wire inlet hole (103).

8. The easily installable electric energy meter according to claim 7, wherein: A fixed sleeve (5013) is installed at the upper end of the wiring board (501). The fixed sleeve (5013) is arranged around the terminal block (503).

9. The easily installable electric energy meter according to claim 7, wherein: A second sleeve (509) is also installed on the cross plate (508). A second spring (5010) is arranged inside the second sleeve (509); The wire pressing plate (502) is set to be an annular plate, and the inner diameter of the wire pressing plate (502) is equal to the outer diameter of the fixed sleeve (5013). A second moving column (5011) is installed at the upper end of the wire pressing plate (502). The second moving column (5011) is slidably installed in the second sleeve (509), and the top end of the second moving column (5011) contacts the bottom end of the second spring (5010).

10. The easy-to-install electric energy meter according to claim 7, characterized in that: A wire pipe (701) is arranged on the wiring board (501). One end of the wire pipe (701) is connected to the wire inlet hole (103). The other end of the wire pipe (701) faces the wire pressing block (604), and the inner diameter of the wire inlet of the wire pipe (701) is larger than the inner diameter of the wire outlet.

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