An easy-to-install electricity meter

Abstract

This invention relates to an easy-to-install electricity meter. The bottom of the meter housing has a sliding groove, allowing the housing to slide on a meter guide rail. One end of the housing has a pair of wire inlet holes, and the top of the housing has a wiring hole. A wiring plate for wiring is fixedly installed inside the housing. A wire pressing mechanism is provided above the wiring plate. A terminal is movably installed in the wiring hole and passes through the wiring plate. A wire pressing plate is provided on the terminal for pressing the wire. A compression spring is engaged with the bottom end of the terminal. A cover plate is movably engaged with the housing. When the cover plate is closed, it abuts against the terminal and drives the wire pressing plate to press the wire end firmly onto the wiring plate. This easy-to-install electricity meter can greatly reduce installation time, thereby improving installation efficiency.

Description

Technical Field

[0001] This invention relates to the field of electricity meters, specifically to an easy-to-install electricity meter. Background Technology

[0002] DIN rail-mounted electricity meters are commonly installed using the traditional wall-mounted method, which has disadvantages such as large size and inconvenient installation. In contrast, DIN rail-mounted electricity meters adopt a modular design, which has advantages such as small size, easy installation, and easy networking. They are easy to implement for terminal lighting electricity metering and facilitate the retrofitting of lighting systems with electricity meters.

[0003] The existing DIN rail-mounted energy meters require manual installation. First, the wire ends are inserted into the meter, then bolts are screwed in to tighten them before the cover is placed on top. This process, requiring manual tightening, is time-consuming and significantly reduces installation efficiency. Furthermore, to avoid excess wire length, wiring is often done after the meter is placed on the rail, resulting in cramped wiring space and inconvenient manual operation. Therefore, this system does not meet current requirements. Summary of the Invention

[0004] This invention provides an easy-to-install electricity meter with advantages such as short installation time, high installation efficiency, and convenient manual operation. It solves the problems mentioned in the background art, such as the need for operators to tighten bolts during the installation of existing electricity meters, which is time-consuming and greatly reduces installation efficiency. In addition, to avoid excess wire length, most DIN rail-mounted electricity meters are wired after the electricity meter is placed on the rail, resulting in a crowded wiring space and inconvenience for manual operation.

[0005] This invention provides an easy-to-install electricity meter, comprising a housing and a guide rail. The housing is slidably mounted on the guide rail. One end of the housing has a pair of wire inlet holes, and the top end of the housing has a wiring hole. A wiring plate for wiring is fixedly installed inside the housing. A wire pressing mechanism is provided above the wiring plate. The wire pressing mechanism includes a terminal post, which is movably mounted in the wiring hole and passes through the wiring plate. A wire pressing plate for pressing the wire is provided on the terminal post. A compression spring is provided inside the housing and is engaged with the bottom end of the terminal post.

[0006] A cover plate is rotatably mounted on the upper end of the housing. The cover plate is movably engaged with the housing. When the cover plate is closed, it abuts against the terminal block and drives the wire clamping plate to press the wire end onto the terminal block.

[0007] As an optional solution for the easy-to-install electricity meter described in this invention, 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 provided at one end of the cover plate. The wire ends pass through the wire-clamping grooves and are clamped onto the housing by the wire-clamping grooves.

[0008] An observation hole is also provided at one end of the housing, and the observation hole is located adjacent to the wire inlet hole.

[0009] As an optional solution for an easy-to-install electricity meter according to the present invention, wherein: a pressing block is installed at the top of the terminal, the pressing block is configured as a circular plate, and a first rubber pad is installed on the pressing block;

[0010] A limit block is installed at the bottom of the terminal block, and the upper end of the compression spring abuts against the bottom end of the limit block.

[0011] As an optional solution for the easy-to-install electricity meter described in this invention, wherein: a mounting base is provided inside the housing, the bottom end of the compression spring is mounted on the mounting base, a threaded hole is provided at the top end of the mounting base, and a threaded section is provided at the bottom end of the terminal block, the threaded section being rotatably mounted in the threaded hole;

[0012] A driven gear is rotatably mounted on the bottom end of the terminal block. The driven gear is connected to the cover plate through a transmission mechanism. A keyway is provided on the driven gear. A key block is installed on one side of the terminal post. The key block is slidably engaged with the keyway.

[0013] As an alternative solution for the easy-to-install electricity meter described in this invention, wherein: a rotating shaft is fixedly installed at the hinge end of the cover plate, the rotating shaft is rotatably installed with the housing, and a first bevel gear is installed at each end of the rotating shaft, the first bevel gear being connected to the driven gear through the transmission mechanism.

[0014] As an alternative solution for the easy-to-install electricity meter described in this invention, the transmission mechanism includes a rotating rod, which is rotatably installed inside the housing, and a second bevel gear is installed at one end of the rotating rod, the second bevel gear meshing with the first bevel gear;

[0015] A drive gear is installed at the other end of the rotating rod, and a transmission gear is rotatably installed inside the housing. The transmission gear meshes with the drive gear and also meshes with the driven gear.

[0016] As an optional solution for the easy-to-install electricity meter described in this invention, wherein: a horizontal plate is installed on the terminal block, a winding mechanism is provided on the horizontal plate, the winding mechanism includes a first sleeve, the first sleeve is installed on the horizontal plate, a first spring is provided inside the first sleeve, a first movable column is slidably installed inside the first sleeve, the top end of the first movable column contacts the bottom end of the first spring, a pressure block is installed at the bottom of the first movable column, the pressure block is arched, and a second rubber pad is installed at the bottom end of the pressure block;

[0017] When not in use, the wire pressing block is set corresponding to the wire inlet hole.

[0018] As an alternative solution for the easy-to-install electricity meter described in this invention, a fixing sleeve is installed at the upper end of the terminal block, and the fixing sleeve is disposed around the terminal post.

[0019] As an alternative solution for an easy-to-install electricity meter according to the present invention, wherein: a second sleeve is also installed on the horizontal plate, and a second spring is provided inside the second sleeve;

[0020] The pressure plate is configured as an annular plate, and the inner diameter of the pressure plate is equal to the outer diameter of the fixed sleeve. A second movable column is installed at the upper end of the pressure plate. The second movable column is slidably installed in the second sleeve, and the top end of the second movable column contacts the bottom end of the second spring.

[0021] As an optional solution for the easy-to-install electricity meter described in this invention, the terminal block is provided with a conduit, one end of the conduit is connected to the inlet hole, the other end of the conduit is directly opposite the pressure block, and the inner diameter of the inlet of the conduit is larger than the inner diameter of the outlet.

[0022] The present invention has the following beneficial effects:

[0023] 1. Because the electricity meter is equipped with an inlet hole and an observation hole, the inlet hole is used to insert the wire end, while the observation hole and transparent cover plate allow observation of the wiring inside the electricity meter. When wiring, after inserting the wire end into the inlet hole, simply close the cover plate, causing the terminal to move downwards. The terminal is equipped with a clamping plate for pressing the wire. As the terminal moves downwards, the clamping plate moves downwards as well, thus pressing the wire end onto the terminal plate, completing the wiring operation. In this process, the operator only needs to insert the wire end and then close the cover plate; there is no need to tighten the bolts, thereby reducing installation time and facilitating manual operation.

[0024] 2. The cover plate is rotatably mounted on the electricity meter, and the cover plate and the driven gear are connected by a transmission mechanism. When the cover plate rotates, it drives the driven gear to rotate, and the driven gear and the terminal block slide and engage. Therefore, when the driven gear rotates, the terminal block also rotates. The bottom end of the terminal block is provided with a threaded section, which is threaded into a threaded hole on the mounting base. The mounting base has a limiting effect on the terminal block, and when the cover plate is opened, the bottom end of the terminal block is still installed in the threaded hole. Therefore, when the cover plate is opened, the terminal block will not pop out under the action of the compression spring. When the operator opens the cover plate again for inspection of the electricity meter, it is not necessary to reposition the terminal block, thus increasing the practicality of this device. At the same time, it enhances the stability of the wiring, and the wire ends are not easy to loosen or slip off, thus increasing the reliability of this device.

[0025] 3. A horizontal plate is installed on the terminal block, and a winding mechanism is installed on the horizontal plate. When the terminal block moves downward, the arched wire pressing block will press down the wire end. When the terminal block rotates, the wire pressing block will drag the wire end to rotate with it and wind the wire end onto the fixed sleeve, where it will be pressed down by the pressure plate. Compared with the pressure plate directly pressing down the wire end, the wire end is wound around and then pressed down, which increases the contact area between the wire end and the terminal block, thereby preventing the wire end from loosening and poor wiring, and further increasing the reliability of this device.

[0026] In addition, the wire clamping 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 clamping plate can move down smoothly and clamp the wire end. Since the displacement of the terminal is fixed, a second spring is set above the wire clamping plate. When the wire end diameter is small, the wire clamping plate can also clamp the wire end under the action of the second spring, reducing the occurrence of loose wire end and poor wiring, and further increasing the reliability of the device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0029] Figure 3 This is a schematic diagram of the cover plate of the present invention.

[0030] Figure 4 This is a three-dimensional structural diagram of the transmission mechanism, winding mechanism, pressing mechanism, and other components of the present invention.

[0031] Figure 5 This is a cross-sectional structural diagram of the winding mechanism and the pressing mechanism of the present invention.

[0032] Figure 6 This is a schematic diagram of the transmission mechanism of the present invention.

[0033] Figure 7This is a schematic diagram of the structure of the conduit of the present invention.

[0034] Figure 8 This is a schematic diagram of the terminal block structure of the present invention.

[0035] Figure 9 This is a schematic diagram of the pressure block structure of the present invention.

[0036] Figure 10 This is a schematic diagram of the mounting base of the present invention.

[0037] Figure 11 This is an enlarged structural diagram of point A in the present invention.

[0038] Figure 12 This is a schematic diagram of the structure after the wire is wound up according to the present invention.

[0039] In the diagram: 100, housing; 101, slide groove; 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, drive gear; 404, transmission gear; 405, driven gear; 406, keyway; 500, wire clamping mechanism; 501, terminal block; 502, terminal block; 503, terminal post. ; 504, Limiting block; 505, Compression spring; 506, Pressing block; 507, Rubber pad No. 1; 508, Horizontal 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, Winding mechanism; 601, First sleeve; 602, First spring; 603, First moving column; 604, Wire pressing block; 605, Rubber pad No. 2; 701, Conduit. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1 aims to address the problem that existing electricity meter installations require operators to tighten bolts twice before replacing the cover plate, a time-consuming process that significantly reduces installation efficiency. Please refer to [link to example]. Figure 1-12An easy-to-install electricity meter includes 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 has a pair of wire inlet holes 103, and the top of the housing 100 has a wiring hole 102. A wiring plate 501 for wiring is fixedly installed inside the housing 100. A wire pressing mechanism 500 is provided above the wiring plate 501. The wire pressing mechanism 500 includes a terminal post 503, which is slidably mounted in the wiring hole 102 and passes through the wiring plate 501. A wire pressing plate 502 for pressing the wire is provided on the terminal post 503. A compression spring 505 is provided inside the housing 100, and the bottom of the terminal post 503 is connected to one end of the compression spring 505. The pair of wire inlet holes 103 are used to insert the neutral wire and the live wire. When the wire ends are inserted, they are located above the wiring plate 501. The wiring plate 501 is electrically connected to the internal circuit of the electricity meter.

[0042] It should be noted that a sliding groove 101 is provided at the bottom of the housing 100, and the sliding groove 101 slides in contact with the guide rail 200. The guide rail 200 is provided with a locking mechanism for locking the housing 100 (not shown in the figure). Therefore, the housing 100 can be selectively installed on different positions of the guide rail 200. The locking mechanism is a common technical means and is well known to those skilled in the art, so it will not be described in detail.

[0043] Additionally, please refer to Figure 2 A cover plate 300 is rotatably mounted on the upper end of the housing 100. The cover plate 300 is movably engaged with the housing 100. When the cover plate 300 is closed, it abuts against the terminal block 503 and drives the wire pressing plate 502 to press the wire end onto the terminal block 501.

[0044] Furthermore, please refer to Figure 3 The cover plate 300 is 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 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. An observation hole 104 is also opened at one end of the housing 100. The observation hole 104 is located next to the wire inlet hole 103. The wiring inside the housing 100 can be seen through the transparent cover plate 300 and the observation hole 104.

[0045] Additionally, please refer to Figure 8A pressing block 506 is installed at the top of the terminal 503. The pressing block 506 is a circular plate with a first rubber pad 507 installed on it. A limiting block 504 is installed at the bottom of the terminal 503. The upper end of the compression spring 505 abuts against the lower end of the limiting block 504. The pressing block 506 and the first rubber pad 507 work together to increase the contact area between the cover plate 300 and the terminal 503. Before the cover plate 300 is closed, the wire pressing plate 502 is located above the terminal plate 501 under the action of the compression spring 505. 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 down on the wire end.

[0046] In this embodiment: the cover plate 300 is 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, providing waterproof and electric shock protection. An observation hole 104 is also provided at one end of the housing 100, located adjacent to the wire inlet hole 103. The wiring inside the housing 100 can be seen through the transparent cover plate 300 and the observation hole 104, making the device more practical. A handle 301 is installed on the surface of the cover plate 300, allowing the cover plate 300 to be opened and closed by controlling the handle. A pair of wire-holding grooves 302 are provided at one end of the cover plate 300. The wire end passes through the wire inlet hole 103 and is held in place by the wire-holding grooves 302, reducing the likelihood of the wire coming loose later. Specifically, when the operator installs the electricity meter... First, insert the neutral and live wires into the inlet holes 103 respectively. Then, cover the cover plate 300, which contacts the terminal 503. A pressing block 506 is installed on the top of the terminal 503. The pressing block 506 is a circular plate with a first rubber pad 507 installed on it. The first rubber pad 507 deforms after contacting the cover plate 300, thereby increasing the contact area between the cover plate 300 and the terminal 503. Then, move the terminal 503 downward, and the pressure plate 502 moves downward at the same time until the pressure plate 502 presses down on the wire end, thus completing the wiring operation. During this process, the installer only needs to insert the stripped wire and cover the cover plate 300. There is no need to tighten bolts, which greatly reduces the installation time and improves the installation efficiency.

[0047] Example 2 aims to address the issue that when the cover 300 is opened, the terminal 503 pops out under the action of the compression spring 505, requiring the installer to reposition the terminal 503. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 1-12The housing 100 is provided with a mounting base 5014. The bottom end of the compression spring 505 is mounted on the mounting base 5014. The top end of the mounting base 5014 is provided with a threaded hole 5015. The bottom end of the terminal 503 is provided with a threaded section 5012. The threaded section 5012 is rotatably mounted in the threaded hole 5015. The bottom end of the terminal block 501 is rotatably mounted with a driven gear 405. The driven gear 405 is connected to the cover plate 300 through a transmission mechanism 400. The driven gear 405 is provided with a keyway 406. A key block 5016 is mounted on one side of the terminal 503. The key block 5016 and the keyway 406 are slidably engaged.

[0048] For details, please refer to Figure 3 A rotating shaft 303 is fixedly installed at one end of the cover plate 300. The rotating shaft 303 is rotatably installed inside the housing 100. A first bevel gear 304 is installed at both ends of the rotating shaft 303. The first bevel gear 304 is connected to the driven gear 405 through the transmission mechanism 400.

[0049] Please refer to the following: Figure 4 , Figure 5 , Figure 6 The transmission mechanism 400 includes a rotating rod 401, which is rotatably mounted inside the housing 100. A second bevel gear 402 is mounted on one end of the rotating rod 401 and meshes with a first bevel gear 304. A drive gear 403 is mounted on the other end of the rotating rod 401. A transmission gear 404 meshes with one side of the drive gear 403 and is rotatably mounted inside the housing 100. The transmission gear 404 meshes with a driven gear 405.

[0050] In this embodiment: a cover plate 300 is rotatably mounted on the upper end of the housing 100, and the cover plate 300 is connected to the driven gear 405 through a 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 503 are slidably engaged. Therefore, when the driven gear 405 rotates, the terminal 503 also rotates. The bottom end of the terminal 503 is provided with a threaded section 5012, which is threaded into the threaded hole 5015 on the mounting base 5014. The mounting base 5014 has a limiting effect on the terminal 503. When the cover plate 300 is opened, the bottom end of the terminal 503 is still installed in the threaded hole 5015. Therefore, when the cover plate 300 is opened, the terminal 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 503, thereby increasing the practicality of this device.

[0051] Example 3 aims to address the problem that simply pressing the wire end onto the connector plate 501 with the wire clamp 502 easily leads to loose wire ends and poor contact. This example is an improvement upon Example 2. For details, please refer to Example 2. Figure 1-12 A horizontal plate 508 is installed on the terminal block 503. A winding mechanism 600 is provided on the horizontal plate 508. The winding mechanism 600 includes a first sleeve 601. The top end of the first sleeve 601 is installed on the horizontal plate 508. A first spring 602 is provided inside the first sleeve 601. A first moving post 603 is slidably installed inside the first sleeve 601. The top end of the first moving post 603 contacts the bottom end of the first spring 602. A wire pressing block 604 is installed at the bottom of the first moving post 603. The wire pressing block 604 is arched. A second rubber pad 605 is installed at the bottom end of the wire pressing block 604. The wire pressing block 604 is positioned directly opposite the wire inlet hole 103.

[0052] It should be noted that, please refer to Figure 5 , Figure 8 , Figure 9 After the wire clamping block 604 presses down on the wire end, it will rotate with the terminal block 503, thereby driving the wire end to complete the winding. In order to prevent part of the wire bundle in the wire end from overflowing from the gap between the wire clamping block 604 and the terminal block 501 during the winding process, this solution has a second rubber pad 605 installed at the bottom of the wire clamping block 604, so that the wire clamping block 604 and the terminal block 501 fit tightly. In addition, since the maximum downward displacement of the horizontal plate 508 is fixed, in order to accommodate wire ends of different sizes, a first spring 602 is provided above the wire clamping block 604 to increase the practicality of this device.

[0053] A fixing sleeve 5013 is installed at the upper end of the terminal block 501. The fixing sleeve 5013 is located around the terminal block 503. The wire end after being wound will be wound on the fixing sleeve to prevent the wire end from being pulled into the keyway 406 and causing blockage when the terminal block 503 moves downward.

[0054] Additionally, please refer to Figure 5 , Figure 8 A second sleeve 509 is also installed on the horizontal plate 508. A second spring 5010 is installed inside the second sleeve 509. The pressure plate 502 is set as an annular plate, and the inner diameter of the pressure plate 502 is equal to the outer diameter of the fixed sleeve 5013. A second moving post 5011 is installed on the upper end of the pressure plate 502. The second moving post 5011 is slidably installed in the second sleeve 509, and the top end of the second moving post 5011 contacts the bottom end of the second spring 5010.

[0055] The terminal block 501 is equipped with a conduit 701. One end of the conduit 701 is connected to the inlet hole 103, and the other end of the conduit 701 is directly opposite the wire clamping block 604. The inner diameter of the inlet of the conduit 701 is larger than the inner diameter of the outlet. Since the wire ends are relatively loose before wiring, the conduit 701 has a certain gathering effect on the wire ends, making it easy for the wire clamping block 604 to completely clamp the wire ends. In addition, the conduit 701 also has a guiding effect on the wire ends, so that when the wire ends are inserted into the housing 100, the wire ends are just on one side of the wire clamping block 604.

[0056] In this embodiment: a horizontal plate 508 is installed on the terminal 503, and a winding mechanism 600 is installed on the horizontal plate 508. When the terminal 503 moves downward, the arched wire pressing block 604 will press down the wire end. At the same time, the terminal 503 rotates, and the wire pressing block 604 pulls the wire end to rotate with it, and winds the wire end onto the fixed sleeve 5013 and presses it down by the pressure plate. Compared with the pressure plate directly pressing down the wire end in Embodiment 2, in this embodiment the wire end is wound around and then pressed down, which increases the contact area between the wire end and the terminal plate 501, thereby preventing the wire end from loosening and poor wiring, and increasing the reliability of this device.

[0057] Furthermore, the wire clamping plate 502 is designed as an annular plate, with the inner diameter of the annular plate equal to the outer diameter of the fixed sleeve 5013. This ensures that the wire clamping plate 502 can move smoothly downwards and clamp the wire end. Since the displacement of the terminal block 503 is fixed, a second spring 5010 is provided above the wire clamping plate 502. When the wire end diameter is small, the action of the second spring 5010 can also ensure that the wire clamping plate 502 clamps the wire end, reducing the occurrence of loose wire ends and poor wiring, and further increasing the reliability of this device.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An easy-to-install electricity meter, comprising a housing (100) and a guide rail (200), wherein the housing (100) is slidably mounted on the guide rail (200), a pair of wire inlet holes (103) are provided at one end of the housing (100), and a wiring hole (102) is provided at the top end of the housing (100), characterized in that: A terminal block (501) for wiring is fixedly installed inside the housing (100). A wire pressing mechanism (500) is provided above the terminal block (501). The wire pressing mechanism (500) includes a terminal post (503). The terminal post (503) is movably installed in the wiring hole (102) and the terminal post (503) passes through the terminal block (501). A wire pressing plate (502) for pressing the wire is provided on the terminal post (503). A compression spring (505) is provided inside the housing (100). The compression spring (505) is snapped into the bottom end of the terminal post (503). A cover plate (300) is rotatably installed on the upper end of the housing (100). The cover plate (300) is movably engaged with the housing (100). When the cover plate (300) is closed, the cover plate (300) abuts against the terminal block (503) and drives the wire pressing plate (502) to press the wire end onto the terminal block (501). The housing (100) is provided with a mounting base (5014), the bottom end of the compression spring (505) is mounted on the mounting base (5014), the top end of the mounting base (5014) is provided with a threaded hole (5015), the bottom end of the terminal block (503) is provided with a threaded section (5012), 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). The driven gear (405) is connected to the cover plate (300) through the transmission mechanism (400). A keyway (406) is provided on the driven gear (405). A key block (5016) is installed on one side of the terminal block (503). The key block (5016) and the keyway (406) are slidably engaged. A rotating shaft (303) is fixedly installed at the hinge end of the cover plate (300). The rotating shaft (303) is rotatably installed with the housing (100). A first bevel gear (304) is installed at both ends of the rotating shaft (303). The first bevel gear (304) is connected to the driven gear (405) through the transmission mechanism (400). The transmission mechanism (400) includes a rotating rod (401), which is rotatably mounted inside the housing (100). A second bevel gear (402) is mounted on one end of the rotating rod (401), and the second bevel gear (402) meshes with the first bevel gear (304). A drive gear (403) is installed at the other end of the rotating rod (401), and a transmission gear (404) is rotatably installed inside the housing (100). The transmission gear (404) meshes with the drive gear (403) and also meshes with the driven gear (405).

2. The easy-to-install electricity meter according to claim 1, characterized in that: The cover plate (300) is 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-locking grooves (302) are provided at one end of the cover plate (300). The wire end passes through the wire-locking groove (302) and is locked onto the housing (100) by the wire-locking groove (302). An observation hole (104) is also provided at one end of the housing (100), and the observation hole (104) is located near the wire inlet hole (103).

3. The easy-to-install electricity meter according to claim 1, characterized in that: A pressing block (506) is installed at the top of the terminal block (503). The pressing block (506) is a circular plate, and a rubber pad (507) is installed on the pressing block (506). A limit block (504) is installed at the bottom of the terminal block (503), and the upper end of the compression spring (505) abuts against the bottom end of the limit block (504).

4. The easy-to-install electricity meter according to claim 1, characterized in that: A horizontal plate (508) is installed on the terminal block (503), and a winding mechanism (600) is provided on the horizontal plate (508). The winding mechanism (600) includes a first sleeve (601), which is installed on the horizontal plate (508). A first spring (602) is provided inside the first sleeve (601), and a first movable column (603) is slidably installed inside the first sleeve (601). The top end of the first movable column (603) contacts the bottom end of the first spring (602). A wire pressing block (604) is installed at the bottom of the first movable column (603). The wire pressing block (604) is arched, and a second rubber pad (605) is installed at the bottom end of the wire pressing block (604). When not in use, the wire clamping block (604) is set to correspond with the wire inlet hole (103).

5. The easy-to-install electricity meter according to claim 4, characterized in that: A fixing sleeve (5013) is installed on the upper end of the terminal block (501), and the fixing sleeve (5013) is located on the periphery of the terminal block (503).

6. The easy-to-install electricity meter according to claim 4, characterized in that: A second sleeve (509) is also installed on the horizontal plate (508), and a second spring (5010) is installed inside the second sleeve (509); The pressure plate (502) is set as an annular plate, and the inner diameter of the pressure plate (502) is equal to the outer diameter of the fixed sleeve (5013). A second movable column (5011) is installed on the upper end of the pressure plate (502). The second movable column (5011) is slidably installed in the second sleeve (509), and the top end of the second movable column (5011) contacts the bottom end of the second spring (5010).

7. The easy-to-install electricity meter according to claim 4, characterized in that: A conduit (701) is provided on the terminal block (501). One end of the conduit (701) is connected to the inlet hole (103), and the other end of the conduit (701) is directly opposite the wire pressing block (604). The inner diameter of the inlet of the conduit (701) is larger than the inner diameter of the outlet.

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