Multifunctional electric meter back cover quick-release connecting device

Abstract

The utility model discloses a multifunctional electric meter rear cover quick detachable connecting device relates to electrical measuring instrument technical field, the utility model discloses a electric meter shell and rear cover, the side surface sliding connection of rear cover is in the inner wall side of electric meter shell, the side surface of electric meter shell is connected with the front cover, the side surface of rear cover is provided with the device of dismounting, the utility model discloses through the device of dismounting realizes the quick dismounting and stable connection of electric meter rear cover, and the maintenance convenience is greatly promoted, and the rotation L type mounting plate is along the light pole and slides, and the reset force of cooperation tension spring makes the top quick card of L type mounting plate into or separate from the groove block, and the symmetric light pole and the anti -disengagement board ensure that L type mounting plate sliding track is stable, avoids the deviation and is jammed, simultaneously, the control rod and reset spring drive the card block and enter the card groove of L type mounting plate, form double limit, solve the traditional electric meter rear cover screw connection and dismounting complicated, time -consuming problem, prevent the rear cover from loosening in use again, and give consideration to dismounting efficiency and connection stability.

Description

Technical Field

[0001] This utility model belongs to the field of electrical measuring instrument technology, and in particular relates to a quick-release connection device for the back cover of a multi-functional meter. Background Technology

[0002] Electricity meters, as core equipment in the electricity metering system, are widely installed in residential buildings, commercial locations, and industrial plants. During long-term operation, they require regular accuracy calibration, fault diagnosis, and component maintenance. The rear cover connection device, as a critical link between the meter casing and its internal structure, directly affects the efficiency of maintenance operations and the overall structural safety of the meter. Currently, the core requirement for the rear cover connection methods in electricity meters on the market is to ensure that it does not loosen during daily use and prevents accidental activation, while also meeting the requirements for quick disassembly and convenient installation during maintenance.

[0003] In existing devices, the back cover is fixed to the meter housing using a screw connection structure. However, this requires the use of screwdrivers and other tools to tighten the screws one by one during disassembly and assembly. This is not only cumbersome and time-consuming, but also prone to stripping the screws and wearing down the screw holes in the meter housing over time, thus compromising the reliability of the connection. Therefore, we propose a multi-functional quick-release connection device for the back cover of the meter. Utility Model Content

[0004] The purpose of this utility model is to provide a quick-release connection device for the back cover of a multi-functional electricity meter. By integrating a guide-type installation and removal mechanism with an anti-accidental contact fixing mechanism, it solves the problems of cumbersome operation steps and long time consumption in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a multifunctional quick-release connection device for the back cover of an electric meter, comprising: an electric meter housing and a back cover plate, wherein the side of the back cover plate is slidably connected to the inner wall side of the electric meter housing, a front cover plate is snapped onto the side of the electric meter housing, and an assembly / disassembly device is provided on the side of the back cover plate. The mounting and disassembly device includes an L-shaped rotating plate. The bottom of the L-shaped rotating plate is rotatably connected to the side of the rear cover plate. A mounting base is fixedly connected to the side of the L-shaped rotating plate away from the rear cover plate. A smooth rod is fixedly connected to the side of the mounting base. A tension spring is provided on the circumferential surface of the smooth rod. An L-shaped mounting plate is slidably connected to the circumferential surface of the smooth rod. A slot is fixedly connected to the top of the meter housing. A slot is provided on the top of the L-shaped mounting plate. A locking block is slidably connected to the top of the meter housing. A control rod is slidably connected to the inner wall of the locking block. A support plate is slidably connected to the circumferential surface of the control rod. The bottom of the support plate is fixedly connected to the top of the meter housing.

[0006] Furthermore, an anti-detachment plate is fixedly connected to the top of the light rod. There are two light rods, which are symmetrical to each other along the vertical central axis of the mounting base. The anti-detachment plate can effectively prevent the L-shaped mounting plate from sliding upward and detaching from the light rod when it slides on the light rod, thus avoiding the interruption of operation or damage to the component due to component falling off during the assembly and disassembly process. The two light rods, which are symmetrical along the vertical central axis of the mounting base, can provide sliding guidance from both sides of the L-shaped mounting plate simultaneously, ensuring that the L-shaped mounting plate is subjected to balanced force and preventing it from tilting due to force on one side and failing to accurately lock into the slot block, thereby improving the operational stability and assembly accuracy of the assembly and disassembly device. Furthermore, a return spring is fixedly connected to the side of the support plate, and one end of the return spring is fixedly connected to the side of one end of the control rod. The return spring can use its own elasticity to provide a continuous return force to the control rod, simplifying the operation process and improving the connection stability of the rear cover plate. Furthermore, the inner wall of the slot is located on the displacement trajectory of the top side of the L-shaped mounting plate, and the inner side of the slot is located on the displacement trajectory of the side of the slot. The inner wall of the slot is adapted to the displacement trajectory of the L-shaped mounting plate, which can ensure that the top side of the L-shaped mounting plate can slide smoothly into the slot, avoiding the L-shaped mounting plate from getting stuck due to trajectory deviation, and ensuring smooth assembly and disassembly. The inner side of the slot corresponds to the displacement trajectory of the slot, which can allow the slot to be accurately embedded in the slot, realize the reliable locking of the L-shaped mounting plate and the meter housing, prevent the back cover connection failure due to misalignment, and further improve the assembly reliability of the device.

[0007] Furthermore, a fixing device is provided on the top of the meter housing. The fixing device includes an extension rod, one end of which is fixedly connected to one end of a control rod. The circumferential surface of the extension rod passes through and is slidably connected to the side of the locking block. A positioning block is fixedly connected to one end of the extension rod. An mounting block is fixedly connected to the top of the meter housing. A positioning rod is slidably connected to the inner side wall of the mounting block. A compression spring is provided on the circumferential surface of the positioning rod. A base is fixedly connected to one end of the positioning rod. One end of the compression spring is fixedly connected to the side of the mounting block, and the other end of the compression spring is fixedly connected to the side of the base. Furthermore, a slide rail is fixedly connected to the top of the meter housing, and the bottom of the positioning block is slidably connected to the top of the slide rail. The slide rail can provide precise guidance for the sliding of the positioning block, restricting the positioning block to move only along the length of the slide rail, avoiding lateral displacement of the positioning block during the sliding process, and ensuring that the positioning block and the positioning rod can be precisely aligned. Furthermore, the positioning block has a through hole on its side, and the inner circumferential surface of the through hole is located on the displacement trajectory of one end of the positioning rod. The positioning block also has a pressing bevel on its side. The through hole matches the displacement trajectory of the positioning rod, ensuring that one end of the positioning rod can be smoothly inserted into the through hole, thus reliably fixing the positioning block and locking the position of the control rod. The pressing bevel can press one end of the positioning rod by the bevel when the positioning block slides, causing the positioning rod to automatically retract into the mounting block without manually pulling the positioning rod. After the through hole and the positioning rod are aligned, the pressing spring pushes the positioning rod into the through hole, achieving automatic positioning, simplifying the fixing operation steps, and improving the ease of use of the device.

[0008] This utility model has the following beneficial effects: This utility model achieves quick disassembly and stable connection of the meter back cover through an assembly / disassembly device, greatly improving maintenance convenience. The L-shaped mounting plate slides along the smooth rod, and with the return force of the tension spring, the top of the L-shaped mounting plate quickly engages or disengages from the slot. The symmetrical smooth rod and anti-disengagement plate ensure the stability of the L-shaped mounting plate's sliding trajectory and prevent deviation and jamming. At the same time, the control rod and the return spring drive the locking block to engage with the slot of the L-shaped mounting plate, forming a double limit. This not only solves the problem of cumbersome and time-consuming disassembly and assembly of traditional meter back cover screw connections, but also prevents the back cover from loosening during use, balancing disassembly and assembly efficiency with connection stability.

[0009] This invention further enhances the reliability of the back cover connection and the anti-accidental contact performance through a fixing device. The control rod drives the extension rod and the positioning block to slide along the slide rail. The squeezing angle of the positioning block can push the positioning rod to compress the squeezing spring. When the positioning block slides to the designated position, the squeezing spring pushes the positioning rod to engage with the through hole of the positioning block, thereby achieving a secondary locking of the control rod. This structure not only avoids the back cover from accidentally loosening due to accidental contact with the control rod, but also ensures accurate and stable locking action through the guide and limit of the slide rail and the positioning rod. It solves the defects of traditional quick-release devices that are prone to misoperation and have insufficient locking reliability, and ensures the structural safety of the meter during use.

[0010] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a three-dimensional front view structural diagram of the present invention; Figure 2This is a structural schematic diagram of the three-dimensional rear view of the present invention; Figure 3 This utility model is three-dimensional Figure 2 A magnified structural diagram of part A in the middle; Figure 4 This utility model is three-dimensional Figure 2 A magnified structural diagram of section B in the middle.

[0013] The attached diagram lists the components represented by each number as follows: 1. Meter housing; 2. Rear cover plate; 3. Front cover plate; 4. Mounting / removal device; 401. L-shaped rotating plate; 402. Mounting base; 403. Smooth rod; 404. Tension spring; 405. L-shaped mounting plate; 406. Groove block; 407. Anti-detachment plate; 408. Slot; 409. Locking block; 410. Control rod; 411. Support plate; 412. Return spring; 5. Fixing device; 501. Extension rod; 502. Positioning block; 503. Mounting block; 504. Positioning rod; 505. Compression spring; 506. Base; 507. Slide rail. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-4 This utility model is a multifunctional quick-release connection device for the back cover of an electric meter, including: an electric meter housing 1 and a back cover plate 2. The side of the back cover plate 2 is slidably connected to the inner wall side of the electric meter housing 1. The side of the electric meter housing 1 is snapped with a front cover plate 3. The side of the back cover plate 2 is provided with an installation and removal device 4. The mounting and disassembly device 4 includes an L-shaped rotating plate 401. The bottom of the L-shaped rotating plate 401 is rotatably connected to the side of the rear cover plate 2. A mounting base 402 is fixedly connected to the side of the L-shaped rotating plate 401 away from the rear cover plate 2. A smooth rod 403 is fixedly connected to the side of the mounting base 402. A tension spring 404 is provided on the circumferential surface of the smooth rod 403. An L-shaped mounting plate 405 is slidably connected to the circumferential surface of the smooth rod 403. A groove block 406 is fixedly connected to the top of the meter housing 1. A slot 408 is provided on the top of the L-shaped mounting plate 405. A locking block 409 is slidably connected to the top of the meter housing 1. A control rod 410 is slidably connected to the inner wall of the locking block 409. A support plate 411 is slidably connected to the circumferential surface of the control rod 410. The bottom of the support plate 411 is fixedly connected to the top of the meter housing 1.

[0016] As shown in the figure, an anti-detachment plate 407 is fixedly connected to the top of the light rod 403. There are two light rods 403, which are symmetrical to each other along the vertical central axis of the mounting base 402. The anti-detachment plate 407 can effectively prevent the L-shaped mounting plate 405 from sliding upward and detaching from the light rod 403 when it slides on the light rod 403, so as to avoid the parts falling off during the assembly and disassembly process, which would cause operation interruption or damage to the parts. The two light rods 403, which are symmetrical along the vertical central axis of the mounting base 402, can provide sliding guidance from both sides of the L-shaped mounting plate 405, ensuring that the L-shaped mounting plate 405 is subjected to balanced force, preventing it from tilting due to unilateral force and failing to accurately fit into the slot block 406, thereby improving the operational stability and assembly accuracy of the assembly and disassembly device 4. As shown in the figure, a return spring 412 is fixedly connected to the side of the support plate 411. One end of the return spring 412 is fixedly connected to the side of one end of the control rod 410. The return spring 412 can use its own elasticity to provide a continuous return force to the control rod 410. When the control rod 410 is released, the return spring 412 can automatically push the control rod 410 to drive the locking block 409 into the slot 408. There is no need to manually adjust the position of the locking block 409, simplifying the operation process. At the same time, the elasticity of the return spring 412 can make the locking block 409 fit tightly against the inner wall of the slot 408, improving the connection stability of the rear cover plate 2. As shown in the figure, the inner wall of the slot 406 is located on the displacement trajectory of the top side of the L-shaped mounting plate 405, and the inner side of the slot 408 is located on the displacement trajectory of the side of the slot 409. The inner wall of the slot 406 is adapted to the displacement trajectory of the L-shaped mounting plate 405, which can ensure that the top side of the L-shaped mounting plate 405 can slide smoothly into the slot 406, avoiding the L-shaped mounting plate 405 from getting stuck due to trajectory deviation, and ensuring smooth assembly and disassembly. The inner side of the slot 408 corresponds to the displacement trajectory of the slot 409, which can allow the slot 409 to be accurately embedded in the slot 408, realizing the reliable locking of the L-shaped mounting plate 405 and the meter housing 1, preventing the connection failure of the rear cover plate 2 due to misalignment, and further improving the assembly reliability of the device. As shown in the figure, a fixing device 5 is provided on the top of the meter housing 1. The fixing device 5 includes an extension rod 501. One end of the extension rod 501 is fixedly connected to one end of the control rod 410. The circumferential surface of the extension rod 501 passes through and is slidably connected to the side of the locking block 409. One end of the extension rod 501 is fixedly connected to a positioning block 502. The top of the meter housing 1 is fixedly connected to a mounting block 503. A positioning rod 504 is slidably connected to the inner side wall of the mounting block 503. A compression spring 505 is provided on the circumferential surface of the positioning rod 504. One end of the positioning rod 504 is fixedly connected to a base 506. One end of the compression spring 505 is fixedly connected to the side of the mounting block 503. The other end of the compression spring 505 is fixedly connected to the side of the base 506. As shown in the figure, a slide rail 507 is fixedly connected to the top of the meter housing 1, and the bottom of the positioning block 502 is slidably connected to the top of the slide rail 507. The slide rail 507 can provide precise guidance for the sliding of the positioning block 502, restricting the positioning block 502 to move only along the length direction of the slide rail 507, avoiding lateral displacement of the positioning block 502 during the sliding process, ensuring that the positioning block 502 and the positioning rod 504 can be precisely aligned, and preventing the fixing device 5 from failing to lock properly due to the displacement of the positioning block 502. As shown in the figure, the positioning block 502 has a through hole on its side. The inner circumferential surface of the through hole is located on the displacement trajectory of one end of the positioning rod 504. The positioning block 502 has a pressing bevel on its side. The through hole and the displacement trajectory of the positioning rod 504 are matched to ensure that one end of the positioning rod 504 can be smoothly inserted into the through hole, realizing the reliable fixation of the positioning block 502, and thus locking the position of the control rod 410. When the positioning block 502 slides, the pressing bevel can press one end of the positioning rod 504 through the bevel, so that the positioning rod 504 automatically retracts into the mounting block 503 without the need to manually pull the positioning rod 504. After the through hole and the positioning rod 504 are aligned, the pressing spring 505 pushes the positioning rod 504 into the through hole to realize automatic positioning, simplify the fixing operation steps, and improve the convenience of using the device.

[0017] A specific application of this embodiment is as follows: When the operator installs the back cover plate 2, the back cover plate 2 is first slid along the inner wall of the meter housing 1 to the fitting position. Then, the L-shaped rotating plate 401 is rotated towards the meter housing 1. The L-shaped rotating plate 401 drives the mounting base 402 and the guide rod 403 to rotate synchronously. At this time, the L-shaped mounting plate 405 is pulled. The L-shaped mounting plate 405 slides on the circumferential surface of the guide rod 403 and stretches the tension spring 404. The top side of the L-shaped mounting plate 405 slides into the inner wall of the slot 406. The reset spring 412 on the side of the support plate 411 releases the elastic force and pushes the control rod 410 to slide along the support plate 411. The control rod 410 drives the locking block 409 to move synchronously, so that the side of the locking block 409 is embedded in the locking groove 408 on the top of the L-shaped mounting plate 405. After the installation of the back cover plate 2 is completed, the anti-detachment plate 407 prevents the L-shaped mounting plate 405 from detaching from the guide rod 403 during the process, thus preventing the parts from falling off. When the mounting and disassembly device 4 is completed and the cover plate 2 is installed, and the locking block 409 is inserted into the slot 408, the control rod 410 is in the position of pushing the locking block 409 to lock. At this time, the control rod 410 drives the extension rod 501 to move synchronously. The extension rod 501 pulls the positioning block 502 to slide along the slide rail 507. During the sliding process, the pressing angle on the side of the positioning block 502 contacts one end of the positioning rod 504. The pressing angle presses the positioning rod 504 to slide into the mounting block 503. The positioning rod 504 drives the base 506 to compress the pressing spring 5. 05. When the positioning block 502 slides to the position where the through hole aligns with the positioning rod 504, the compression spring 505 releases its elastic force, pushing the base 506 and the positioning rod 504 to move towards the positioning block 502, so that one end of the positioning rod 504 is inserted into the through hole of the positioning block 502, thereby fixing the positioning block 502. Since the positioning block 502 is fixed to the control rod 410 through the extension rod 501, after the positioning block 502 is locked, the control rod 410 cannot be pulled, thus avoiding accidental contact with the control rod 410 and causing the rear cover plate 2 to come loose unexpectedly.

[0018] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0019] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A quick-release connection device for the back cover of a multi-functional electricity meter, comprising a meter housing (1) and a back cover plate (2), characterized in that: The side of the rear cover plate (2) is slidably connected to the inner wall side of the meter housing (1), the side of the meter housing (1) is snapped with the front cover plate (3), and the side of the rear cover plate (2) is provided with a mounting and dismounting device (4). The mounting and disassembly device (4) includes an L-shaped rotating plate (401). The bottom of the L-shaped rotating plate (401) is rotatably connected to the side of the rear cover plate (2). A mounting base (402) is fixedly connected to the side of the L-shaped rotating plate (401) away from the rear cover plate (2). A smooth rod (403) is fixedly connected to the side of the mounting base (402). A tension spring (404) is provided on the circumferential surface of the smooth rod (403). An L-shaped mounting bracket is slidably connected to the circumferential surface of the smooth rod (403). Mounting plate (405), the top of the meter housing (1) is fixedly connected to a slot (406), the top of the L-shaped mounting plate (405) is provided with a slot (408), the top of the meter housing (1) is slidably connected to a locking block (409), the inner wall of the locking block (409) is slidably connected to a control rod (410), the circumferential surface of the control rod (410) is slidably connected to a support plate (411), and the bottom of the support plate (411) is fixedly connected to the top of the meter housing (1).

2. The quick-release connecting device for the back cover of a multi-functional electricity meter according to claim 1, characterized in that, The top end of the light rod (403) is fixedly connected to an anti-detachment plate (407), and there are two light rods (403) that are symmetrical to each other along the vertical central axis of the mounting base (402).

3. The quick-release connecting device for the back cover of a multi-functional electricity meter according to claim 2, characterized in that, A reset spring (412) is fixedly connected to the side of the support plate (411), and one end of the reset spring (412) is fixedly connected to one end of the control rod (410).

4. The quick-release connecting device for the back cover of a multi-functional electricity meter according to claim 3, characterized in that, The inner wall of the slot (406) is located on the displacement trajectory of the top side of the L-shaped mounting plate (405), and the inner side of the slot (408) is located on the displacement trajectory of the side of the slot (409).

5. The quick-release connecting device for the back cover of a multi-functional electricity meter according to claim 4, characterized in that, The top of the meter housing (1) is provided with a fixing device (5), which includes an extension rod (501). One end of the extension rod (501) is fixedly connected to one end of the control rod (410). The circumferential surface of the extension rod (501) passes through and is slidably connected to the side of the locking block (409). One end of the extension rod (501) is fixedly connected to a positioning block (502). The top of the meter housing (1) is fixedly connected to an installation block (503). The inner side wall of the installation block (503) is slidably connected to a positioning rod (504). The circumferential surface of the positioning rod (504) is provided with a compression spring (505). One end of the positioning rod (504) is fixedly connected to a base (506). One end of the compression spring (505) is fixedly connected to the side of the installation block (503), and the other end of the compression spring (505) is fixedly connected to the side of the base (506).

6. The quick-release connecting device for the rear cover of a multi-functional electricity meter according to claim 5, characterized in that, The top of the meter housing (1) is fixedly connected to a slide rail (507), and the bottom of the positioning block (502) is slidably connected to the top of the slide rail (507).

7. The quick-release connecting device for the rear cover of a multi-functional electricity meter according to claim 6, characterized in that, The positioning block (502) has a through hole on its side, and the inner circumferential surface of the through hole is located on the displacement trajectory of one end of the positioning rod (504). The positioning block (502) has a pressing bevel on its side.

Images