Multifunctional electric power meter

Abstract

The invention relates to the technical field of electric power meters, and discloses a multifunctional electric power meter which comprises an electric power meter body, a first display surface is arranged on the outer surface of the electric power meter body, a first replacement mechanism is clamped to the outer surface of the electric power meter body, and a demisting mechanism and a second replacement mechanism are clamped into the first replacement mechanism. The elastic fixed top plate of the replacement mechanism is arranged to prevent vibration and loosening, can be rapidly replaced during oxidation, avoids overall replacement, and prolongs the service life of the instrument; the demisting mechanism can clean condensate water, prevent accelerated oxidation and avoid water vapor from damaging a circuit, self-locking is achieved after demisting is completed, and the demisting effect is improved by attaching a bent rod to a plastic plate; the second replacement mechanism can quickly replace worn parts of the demisting mechanism, demisting efficiency is maintained, a limiting assembly of the second replacement mechanism precisely limits and stabilizes the demisting mechanism, and demisting requirements are responded at any time.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power meters, in particular to a multifunctional electric power meter. Background Art

[0002] In the fields of industrial production, power operation and maintenance, multifunctional power meters play an irreplaceable role with their powerful measurement and monitoring functions. As key equipment for industrial production and power operation and maintenance, multifunctional power meters can achieve accurate measurement and real-time monitoring of power parameters and are indispensable in many scenarios.

[0003] The patent application with application number CN202411632818.5 discloses a multifunctional electric power meter, including a front end panel, which is arranged at the front end of the meter housing, the electric power instrument body is arranged inside the meter housing, the front end of the front end panel is provided with a liquid crystal display, and a button panel and a buzzer alarm are provided below the liquid crystal display; a threaded through hole is provided on the back of the meter housing, the rear end of the electric power instrument body is provided with a connecting socket, a wireless communication module assembly is provided on one side of the meter housing, and a connecting plug is provided on one side of the wireless communication module assembly, and the connecting plug is provided corresponding to the connecting socket.

[0004] However, this patent also has the following drawbacks: the meter top plate is easily oxidized due to long-term exposure to complex environments, forming a rough oxide layer, which reduces light transmittance, blurring the display, and affecting legibility. When the ambient humidity is high or the temperature fluctuates significantly, condensation forms on the inner surface of the plastic plate, accelerating oxidation and deteriorating the display. Condensation seeping into the interior can also cause short circuits, corrosion, and other faults. To address this situation, a multifunctional power meter is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a multifunctional power meter to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: a multifunctional electric power meter, comprising an electric power meter body, wherein the outer surface of the electric power meter body is provided with a display surface 1, the outer surface of the electric power meter body is snap-connected with a replacement mechanism 1, the interior of the replacement mechanism 1 is snap-connected with a defogger mechanism and a replacement mechanism 2, and the replacement mechanism 1 comprises: A through-hole box frame is snap-connected to the main body of the power meter. A threaded column 1 is slidably connected to the inside of the through-hole box frame. The outer surface of the threaded column 1 is threadedly connected to a hexagonal through-hole clamping ring. The outer surface of the hexagonal through-hole clamping ring is snap-connected to a top plate. A display surface 2 is opened inside the top plate, and the display surface 2 is used to display the display surface 1.

[0007] According to the above technical solution, the replacement mechanism 1 also includes a first spring, which is fixedly connected to the outer surface of the through-hole box frame. The outer surface of the threaded column 1 is bolted with a first nut, and the outer surface of the threaded column 1 is fixedly connected to a limiting cylinder, which is used to limit the threaded column 1.

[0008] According to the above technical solution, the outer surface of the through-hole box frame contacts the outer surface of the power meter body, the outer surface of the hexagonal through-hole snap ring is flush with the outer surface of the top plate, the top plate is snap-connected to the through-hole box frame, the outer surface of the threaded column one is provided with a bellows, the outer surface of the first nut is fixedly connected to the outer surface of the first spring, and the hexagonal through-hole snap ring is used to limit the top plate.

[0009] According to the above technical solution, the defogger mechanism includes an annular telescopic baffle, which is fixedly connected to the outer surface of the through-hole box frame, and the lower surface of the annular telescopic baffle is fixedly connected to a rectangular spring, and the outer surface of the annular telescopic baffle is fixedly connected to a connecting plate, and the outer surface of the connecting plate is fixedly connected to an arc-shaped plate 1, a rectangular groove is opened inside the through-hole box frame, and the lower surface of the connecting plate is fixedly connected to a telescopic baffle 1, and the telescopic baffle 1 is used to seal the through-hole box frame.

[0010] According to the above technical solution, the defogger mechanism also includes an arc-shaped plate 2, the outer surface of which is fixedly connected to a bent rod, the outer surface of which is fixedly connected to a limiting ring, the interior of the bent rod is clamped with a sponge column, the interior of the sponge column is plugged with a threaded column 2, the outer surface of the threaded column 2 is threadedly connected to a slot nut, and the sponge column is used to clean the inner surface of the top plate.

[0011] According to the above technical solution, the lower surface of the rectangular spring is fixedly connected to the inner surface of the through-hole box frame, the connecting plate is clamped with the through-hole box frame, the edge of the rectangular groove is provided with a beveled edge, the bent rod is plugged into the through-hole box frame, the limiting cylinder is clamped with the outer surface of the connecting plate, the outer surface of the threaded column 2 is in contact with the outer surface of the bent rod, the outer surface of the slot nut is in contact with the outer surface of the bent rod, and the annular telescopic baffle is used to protect the display surface 1.

[0012] According to the above technical solution, the second replacement mechanism includes a through-hole arc column, which is fixedly connected to the through-hole box frame, and a unloading hole is opened inside the through-hole box frame. The outer surface of the sponge column is clamped with a semi-card frame, and the outer surface of the semi-card frame is fixedly connected with a connecting rod. The outer surface of the connecting rod is sleeved with a friction belt, and the outer surface of the friction belt is fixedly connected with a rectangular column one and an arc plate three. The interior of the arc plate three is clamped with a rectangular column two, and the lower surface of the arc plate three is fixedly connected with a telescopic baffle two, and the telescopic baffle two is used to seal the through-hole box frame.

[0013] According to the above technical solution, the arc plate three is clamped with the through-hole box frame, the lower surface of the telescopic baffle two is fixedly connected to the through-hole box frame, the rectangular column one is clamped with the arc plate three, the rectangular column one has the same shape as the rectangular column two, the height of the telescopic baffle two is the same as the distance from the unloading hole to the slot nut, and the limiting ring is used to limit the bent rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This multifunctional power meter, by providing a replacement mechanism, can achieve a stable and elastic fixation of the top plate, which not only effectively prevents the top plate from loosening due to vibration, but also can quickly remove and replace the oxidized top plate due to oxidation of the top plate due to long-term use, resulting in blurred display, with the help of the convenient disassembly design of the replacement mechanism, to ensure that the data displayed on the power meter is clear and easy to read. The detachable design avoids the need to replace the entire meter due to damage to the display components, thereby greatly extending the service life of the power meter.

[0015] 2. This multifunctional electric power meter is equipped with a defogger mechanism to effectively clean up the accumulated water by condensing water on the inner surface of the top plate. It not only prevents the condensed water from accelerating the oxidation of the inner surface of the plastic plate, extending its service life and ensuring that the data displayed on the electric power meter is always clear, but also cleverly avoids the negative effects of simply heating and evaporating the condensed water, which may cause water vapor to enter the instrument and cause short circuits, corrosion and other negative effects on the electric power meter circuits and components, thereby ensuring the stable operation of the meter in all aspects.

[0016] 3. This multifunctional electric meter is equipped with a defogger mechanism. When the defogger work is completed, it can trigger the self-locking function to ensure that the mechanism will not shift due to shaking or collision when not in use, and always maintains a stable state. Through the bending rod, it can effectively drive the defogger parts to fit closely to the inner surface of the top plate, greatly improving the defogger effect and ensuring that the top plate is clear and fog-free in all directions.

[0017] 4. This multifunctional electric power meter is equipped with a second replacement mechanism. When the key components of the defogger mechanism are worn or malfunction, they can be quickly replaced to ensure that the defogger efficiency is not affected. In addition, its built-in limit assembly can accurately limit the defogger mechanism when it is not in use, avoiding damage to components due to vibration or displacement, and keeping the defogger mechanism in a stable state to meet the defogger needs of the top plate at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a cross-sectional view of the main structure of the present invention; Figure 3 This is a structural cross-sectional view of a replacement mechanism 1 of the present invention; Figure 4 A partial structural cross-sectional view of a replacement mechanism 1 of the present invention; Figure 5 It is a structural cross-sectional view of the demisting mechanism of the present invention; Figure 6 It is an exploded view of the local structure of the demisting mechanism of the present invention; Figure 7 This is a structural diagram of the second replacement mechanism of the present invention; Figure 8 for Figure 7 An enlarged cross-sectional view of the structure at point A in the middle.

[0019] In the figure: 1. Power meter body; 2. Display panel 1; 3. Replace mechanism 1; 301, through-hole box frame; 302, threaded column 1; 303, hexagonal through-hole snap ring; 304, top plate; 305, first spring; 306, first nut; 307, limiting cylinder; 308, display surface 2; 4. Demisting mechanism; 401, annular telescopic baffle; 402, rectangular spring; 403, connecting plate; 404, curved plate 1; 405, rectangular groove; 406, telescopic baffle 1; 407, curved plate 2; 408, curved rod; 409, limiting ring; 410, sponge column; 411, threaded column 2; 412, slot nut; 5. Replacement mechanism 2; 501, discharge hole; 502, through-hole arc column; 503, half-card frame; 504, connecting rod; 505, friction belt; 506, rectangular column one; 507, arc plate three; 508, rectangular column two; 509, telescopic baffle two. DETAILED DESCRIPTION

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

[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0022] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] Example 1: See Figures 1-4 The present invention provides a technical solution: a multifunctional electric power meter, comprising an electric power meter body 1, wherein the outer surface of the electric power meter body 1 is provided with a display surface 2, a replacement mechanism 3 is snap-connected to the outer surface of the electric power meter body 1, a defogger mechanism 4 and a replacement mechanism 5 are snap-connected to the interior of the replacement mechanism 3, and the replacement mechanism 3 comprises: The through-hole box frame 301 is snap-connected with the power meter body 1. The interior of the through-hole box frame 301 is slidably connected with a threaded column 1 302. The outer surface of the threaded column 1 302 is threadedly connected with a hexagonal through-hole clamping ring 303. The outer surface of the hexagonal through-hole clamping ring 303 is snap-connected with a top plate 304. The interior of the top plate 304 is provided with a display surface 2 308, and the display surface 2 308 is used to display the display surface 1 2.

[0024] The replacement mechanism 3 also includes a first spring 305, which is fixedly connected to the outer surface of the through-hole box frame 301. The outer surface of the threaded column 302 is bolted with a first nut 306. The outer surface of the threaded column 302 is fixedly connected to a limiting cylinder 307, which is used to limit the threaded column 302.

[0025] The outer surface of the through-hole box frame 301 is in contact with the outer surface of the power meter body 1, the outer surface of the hexagonal through-hole snap ring 303 is flush with the outer surface of the top plate 304, the top plate 304 is snap-connected to the through-hole box frame 301, the outer surface of the threaded column 1 302 is provided with a bellows, the outer surface of the first nut 306 is fixedly connected to the outer surface of the first spring 305, the hexagonal through-hole snap ring 303 is used to limit the top plate 304, and the inner surface of the display surface 2 308 generates condensed water due to the environment. The tightness of the first spring 305 can be adjusted by the first nut 306. At this time, the condensed water can be processed through the gap between the top plate 304 and the through-hole box frame 301, and the first spring 305 is protected by the bellows so that it will not be affected.

[0026] The working principle of this embodiment is as follows: when using this multifunctional power meter, the top plate 304 is clamped with the through-hole box frame 301. At this time, the limiting cylinder 307 rotates to drive the threaded column 1 302 to rotate, so that the threaded column 1 302 is threadedly connected to the top plate 304, and the hexagonal through-hole clamping ring 303 is threadedly connected to the outer surface of the threaded column 1 302 to limit the threaded column 1 302. At this time, the first nut 306 rotates on the outer surface of the threaded column 1 302 to squeeze the first spring 305, so that the threaded column 1 302 pushes the through-hole box frame 301. , so that the through-hole box frame 301 is tightly clamped with the top plate 304, and the first spring 305 is protected by the bellows. At this time, the shell makes the data on the display surface 1 2 clear and easy to read through the display surface 2 308. At this time, after long-term use, if the surface of the display surface 2 308 is oxidized and roughened, the hexagonal through-hole clamping ring 303 rotates in the opposite direction and moves out, and drives the threaded column 1 302 to move through the limiting cylinder 307, so that it moves out of the top plate 304. At this time, the top plate 304 is replaced and elastically limited and fixed through the above process, thereby realizing the replacement of the display surface 2 308.

[0027] Example 2: Please refer to Figure 5-Figure 6 On the basis of Example 1, the present invention provides a technical solution: the defogger mechanism 4 includes an annular telescopic baffle 401, which is fixedly connected to the outer surface of the through-hole box frame 301, and a rectangular spring 402 is fixedly connected to the lower surface of the annular telescopic baffle 401. The outer surface of the annular telescopic baffle 401 is fixedly connected to a connecting plate 403, and the outer surface of the connecting plate 403 is fixedly connected to an arc-shaped plate 404. A rectangular groove 405 is opened inside the through-hole box frame 301, and a telescopic baffle 406 is fixedly connected to the lower surface of the connecting plate 403. The telescopic baffle 406 is used to seal the through-hole box frame 301.

[0028] The defogger mechanism 4 also includes an arc-shaped plate 2 407, the outer surface of which is fixedly connected to a bent rod 408, the outer surface of which is fixedly connected to a limiting ring 409, the interior of the bent rod 408 is clamped with a sponge column 410, the interior of the sponge column 410 is plugged with a threaded column 2 411, the outer surface of the threaded column 2 411 is threadedly connected to a slot nut 412, and the sponge column 410 is used to clean the inner surface of the top plate 304.

[0029] The lower surface of the rectangular spring 402 is fixedly connected to the inner surface of the through-hole box frame 301, the connecting plate 403 is clamped with the through-hole box frame 301, the edge of the rectangular groove 405 is provided with a bevel, the bent rod 408 is plugged into the through-hole box frame 301, the limiting cylinder 307 is clamped with the outer surface of the connecting plate 403, the outer surface of the threaded column 2 411 contacts the outer surface of the bent rod 408, and the outer surface of the slot nut 412 contacts the outer surface of the bent rod 408. The annular telescopic baffle 401 is used to protect the display surface 2. After the connecting plate 403 moves downward, the limiting ring 409 will not limit the bent rod 408, so that the bent rod 408 slides on the upper surface of the connecting plate 403. The sponge column 410 is a combination of a through-hole cylinder and a sponge ring, which is convenient for replacing the sponge column 410, and the slot of the slot nut 412 facilitates the disassembly of the threaded column 2 411 and the slot nut 412.

[0030] The working principle of this embodiment is: when using this multifunctional power meter, the arc plate 1 404 is pushed downward, driving the connecting plate 403 to move downward, so that it moves inside the rectangular groove 405, and driving the annular telescopic baffle 401 to move downward, and the rectangular spring 402 is compressed. At this time, the annular telescopic baffle 401 is moved downward through the symmetrically arranged connecting plate 403, and at this time, the curved rod 408 is driven to move outward through the arc plate 2 407, and moves through the upper surface of the compressed annular telescopic baffle 401, and the condensed water on the inner surface of the sponge column 410 and the top plate 304 is cleaned through the curved rod 408, and the inner surface of the top plate 304 is cleaned by continuously pulling the arc plate 2 407, and the sponge column 410 is replaced by the threaded connection between the threaded column 2 411 and the slot nut 412.

[0031] Example 3: Please refer to Figure 7-Figure 8On the basis of embodiment one and embodiment two, the present invention provides a technical solution: the replacement mechanism 2 5 includes a through-hole arc column 502, which is fixedly connected to the through-hole box frame 301, and a discharge hole 501 is opened inside the through-hole box frame 301. The outer surface of the sponge column 410 is clamped with a semi-card frame 503, and the outer surface of the semi-card frame 503 is fixedly connected with a connecting rod 504. The outer surface of the connecting rod 504 is sleeved with a friction belt 505. The outer surface of the friction belt 505 is fixedly connected with a rectangular column 1 506 and an arc plate 3 507. The interior of the arc plate 3 507 is clamped with a rectangular column 2 508. The lower surface of the arc plate 3 507 is fixedly connected with a telescopic baffle 2 509. The telescopic baffle 2 509 is used to seal the through-hole box frame 301.

[0032] The arc plate three 507 is clamped with the through hole box frame 301, the lower surface of the telescopic baffle two 509 is fixedly connected with the through hole box frame 301, the rectangular column one 506 is clamped with the arc plate three 507, the rectangular column one 506 and the rectangular column two 508 have the same shape, the height of the telescopic baffle two 509 is the same as the distance from the discharge hole 501 to the slot nut 412, the limiting ring 409 is used to limit the bending rod 408, and a slot is provided inside the semi-card frame 503 to allow the sponge ring of the sponge column 410 to move, and And it does not affect the limiting effect of the half-card frame 503 on the connecting rod 504. After the replacement is completed, the connecting rod 504 can be rotated at a small angle inside the friction belt 505, so that the half-card frame 503 is not engaged with the sponge column 410, thereby realizing the movement of the defogger mechanism 4. If the rectangular column 1 506 is engaged with the notch of the rectangular column 2 508, the friction belt 505 is in close contact with the outer surface of the connecting rod 504, thereby realizing the limiting of the defogger mechanism 4, and the through-hole box frame 301 is protected by the telescopic baffle 2 509.

[0033] The working principle of this embodiment is as follows: when using this multifunctional electric power meter, a half-card frame 503 is clamped on the outer surface of the sponge column 410, and the rectangular column 2 508 is moved out, and the rectangular column 1 506 is clamped with the position of the rectangular column 2 508, so that the friction belt 505 frictionally limits the connecting rod 504, and the arc plate 3 507 is pushed downward, so that the arc plate 3 507 drives the connecting rod 504 to move downward, thereby moving the sponge column 410 downward through the half-card frame 503, and pressurizing the bent rod 408 to move downward inside the rectangular groove 405, and the sponge column 410 coincides with the axis of the discharge hole 501, and the threaded connection with the threaded column 2 411 is released through the card slot nut 412, and the threaded Column two 411 moves outward, and at this time a new sponge column 410 is inserted through the unloading hole 501, so that the sponge column 410 is pushed by the new sponge column 410 to be moved out through the through-hole arc column 502, and the unloading hole 501 is at the top and the through-hole arc column 502 is at the bottom, so that the condensed water inside the sponge column 410 is discharged through the through-hole arc column 502 and will not affect the new sponge column 410. After the sponge column 410 is completely discharged, the loading of the new sponge column 410 is completed, and the threaded column two 411 and the slot nut 412 are used to fix the new sponge column 411. At this time, the rectangular column one 506 is clamped with the original slot, and the arc plate three 507 is no longer pushed, thereby completing the replacement of the sponge column 410.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multifunctional electric power meter, comprising an electric power meter body (1), wherein the outer surface of the electric power meter body (1) is provided with a display surface 1 (2), the outer surface of the electric power meter body (1) is clamped with a replacement mechanism 1 (3), and the interior of the replacement mechanism 1 (3) is clamped with a defogger mechanism (4) and a replacement mechanism 2 (5), characterized in that: The replacement mechanism 1 (3) comprises: A through-hole box frame (301) is snap-fitted to the power meter body (1); a threaded column (302) is slidably connected to the interior of the through-hole box frame (301); a hexagonal through-hole snap ring (303) is threadedly connected to the outer surface of the threaded column (302); a top plate (304) is snap-fitted to the outer surface of the hexagonal through-hole snap ring (303); a display surface (308) is provided inside the top plate (304); and the display surface (308) is used to display the display surface (2).

2. A multifunctional power meter according to claim 1, characterized in that: The replacement mechanism 1 (3) further comprises a first spring (305), the first spring (305) being fixedly connected to the outer surface of the through-hole box frame (301), the outer surface of the threaded column 1 (302) being bolted with a first nut (306), the outer surface of the threaded column 1 (302) being fixedly connected to a limiting cylinder (307), the limiting cylinder (307) being used to limit the threaded column 1 (302).

3. A multifunctional power meter according to claim 2, characterized in that: The outer surface of the through-hole box frame (301) contacts the outer surface of the power meter body (1); the outer surface of the hexagonal through-hole snap ring (303) is flush with the outer surface of the top plate (304); the top plate (304) is snap-connected to the through-hole box frame (301); the outer surface of the threaded column (302) is provided with a bellows; the outer surface of the first nut (306) is fixedly connected to the outer surface of the first spring (305); and the hexagonal through-hole snap ring (303) is used to limit the top plate (304).

4. A multifunctional power meter according to claim 2, characterized in that: The demisting mechanism (4) includes an annular telescopic baffle (401), the annular telescopic baffle (401) is fixedly connected to the outer surface of the through-hole box frame (301), the lower surface of the annular telescopic baffle (401) is fixedly connected to a rectangular spring (402), the outer surface of the annular telescopic baffle (401) is fixedly connected to a connecting plate (403), the outer surface of the connecting plate (403) is fixedly connected to an arc-shaped plate (404), a rectangular groove (405) is provided inside the through-hole box frame (301), and the lower surface of the connecting plate (403) is fixedly connected to a telescopic baffle (406), and the telescopic baffle (406) is used to seal the through-hole box frame (301).

5. The multifunctional electric power meter according to claim 4, characterized in that: The demisting mechanism (4) further comprises an arc-shaped plate 2 (407), the outer surface of the arc-shaped plate 2 (407) is fixedly connected to a bent rod (408), the outer surface of the bent rod (408) is fixedly connected to a limiting ring (409), the interior of the bent rod (408) is clamped with a sponge column (410), the interior of the sponge column (410) is plugged with a threaded column 2 (411), the outer surface of the threaded column 2 (411) is threadedly connected to a slot nut (412), and the sponge column (410) is used to clean the inner surface of the top plate (304).

6. A multifunctional electric power meter according to claim 5, characterized in that: The lower surface of the rectangular spring (402) is fixedly connected to the inner surface of the through-hole box frame (301), the connecting plate (403) is clamped with the through-hole box frame (301), the edge of the rectangular groove (405) is provided with a bevel, the bent rod (408) is plugged into the through-hole box frame (301), the limiting cylinder (307) is clamped with the outer surface of the connecting plate (403), the outer surface of the second threaded column (411) is in contact with the outer surface of the bent rod (408), the outer surface of the slot nut (412) is in contact with the outer surface of the bent rod (408), and the annular telescopic baffle (401) is used to protect the display surface 1 (2).

7. A multifunctional power meter according to claim 6, characterized in that: The replacement mechanism 2 (5) includes a through-hole arc column (502), the through-hole arc column (502) is fixedly connected to the through-hole box frame (301), the through-hole box frame (301) is provided with a discharge hole (501), the outer surface of the sponge column (410) is clamped with a semi-clamping frame (503), the outer surface of the semi-clamping frame (503) is fixedly connected with a connecting rod (504), the outer surface of the connecting rod (504) is sleeved with a friction belt (505), the outer surface of the friction belt (505) is fixedly connected with a rectangular column 1 (506) and an arc plate 3 (507), the interior of the arc plate 3 (507) is clamped with a rectangular column 2 (508), the lower surface of the arc plate 3 (507) is fixedly connected with a telescopic baffle 2 (509), and the telescopic baffle 2 (509) is used to block the through-hole box frame (301).

8. The multifunctional electric power meter according to claim 7, characterized in that: The arc plate three (507) is clamped with the through hole box frame (301), the lower surface of the telescopic baffle two (509) is fixedly connected with the through hole box frame (301), the rectangular column one (506) is clamped with the arc plate three (507), the rectangular column one (506) and the rectangular column two (508) have the same shape, the height of the telescopic baffle two (509) is the same as the distance from the discharge hole (501) to the slot nut (412), and the limiting ring (409) is used to limit the bending rod (408).

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