Electric energy meter with built-in switch

By using limit components and synchronous adjustment components to drive the ring airbag sealing design in the built-in power meter of the switch, the problem of incorrect placement of the seal during installation is solved, the effective sealing of the power meter is realized, protecting the inside of the equipment and improving the Reliability of the equipment.

CN119125636APending Publication Date: 2024-12-13GUIZHOU POWER GRID CO LTD
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Patent Information

Application Number
CN202411050809.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-08-01
Publication Date
2024-12-13

AI Technical Summary

Technical Problem

The sealing element is not placed correctly during the installation process of the switch, which affects the sealing effect of the equipment and causes the equipment to be susceptible to moisture and impurities, which may cause the circuit board and electronic components to be damp, corroded or short-circuited, affecting the normal operation of the equipment.

Method used

A structure including an energy meter body, a meter cover, annular airbag, a limiting assembly and a synchronous adjustment assembly are designed. When the meter cover is closed, the limiting assembly and a synchronous adjustment assembly are used to automatically limit and drive the annular airbag to inflate and seal. The gap between the meter cover and the meter body prevents external moisture from entering; when unfolded, it automatically limits and the airbag shrinks to avoid affecting the observation of the interior.

Benefits of technology

Through automatic limiting and airbag sealing, the sealing effect of the power meter is ensured, moisture is prevented, the interior of the equipment is protected, the installation process is simplified and the reliability of the equipment is improved.

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Abstract

The invention discloses an electric energy meter with a built-in switch, which relates to the technical field of electric energy meters and comprises an electric energy meter body and an electric energy meter cover rotationally arranged on the electric energy meter body. The air bag is arranged in the electric energy meter body; the limiting assembly is arranged on the electric energy meter body, when the electric energy meter cover is closed, the limiting assembly is matched with the synchronous adjusting assembly, so that the electric energy meter cover is automatically limited, meanwhile, the annular air bag is driven to be inflated, and a gap and a hinged position between the electric energy meter cover and the electric energy meter body are blocked through the annular air bag; meanwhile, the electric meter cover and the electric energy meter body are limited, external moisture is prevented from entering the electric energy meter body, when the electric meter cover is unfolded, the electric meter cover is automatically limited when being completely unfolded, the electric meter cover is prevented from influencing inspection of the electric energy meter body by workers, and meanwhile the annular air bag and the U-shaped air bag are shrunk; the expanded annular air bag and the U-shaped air bag are prevented from influencing the visual field of workers for observing the interior of the electric energy meter body.
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Description

Technical Field

[0001] The present invention relates to the technical field of electric energy meters, and in particular to an electric energy meter with a built-in switch. Background Art

[0002] The switch built-in energy meter is a kind of power metering device used to measure, monitor and record the power consumption in the circuit. It is often embedded in electrical switch equipment (such as circuit breakers, contactors, etc.) to monitor the power usage in the circuit in real time, provide power metering data, help users understand power consumption, conduct energy management, monitor circuit load, improve energy efficiency, etc.

[0003] When disassembling the switch-built-in energy meter, you need to prepare the correct tools, such as screwdrivers, wrenches, etc., to disassemble the switch-built-in energy meter's casing and connecting parts. When the staff disassembles the switch-built-in energy meter, if the seal inside the switch-built-in energy meter is accidentally displaced, if the seal is not placed correctly during the reinstallation process, or the seal is not in the correct position, it may cause a gap between the seal and the joint, affecting the sealing effect. If the switch-built-in energy meter fails to seal, the inside of the device is susceptible to moisture, impurities, etc., which may cause circuit boards, electronic components and other components to become damp, corroded or short-circuited, ultimately affecting the normal operation of the equipment or even damaging the equipment. Summary of the invention

[0004] In view of the above problems existing in the existing switch with built-in electric energy meter, the present invention is proposed.

[0005] Therefore, the present invention provides a switch-built-in electric energy meter, the purpose of which is to solve the technical problem that the sealing effect of the equipment is affected by the incorrect placement of the sealing member during the installation of the switch-built-in electric energy meter.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising an electric energy meter body, and also comprising

[0007] An electric meter cover is rotatably arranged on the electric energy meter body;

[0008] The annular air bag is arranged in the electric energy meter body;

[0009] The limiting component is arranged on the electric energy meter body and connected to the electric energy meter cover. When the electric energy meter cover is rotated and closed, the limiting component is used to limit the electric energy meter cover.

[0010] The synchronous adjustment component is arranged on the electric energy meter body and is connected with the limit component and the annular airbag. When the limit component is working, the synchronous adjustment component is used to drive the annular airbag to inflate.

[0011] As a preferred solution of the switch with built-in electric energy meter described in the present invention, the limit assembly includes a rotating shaft rotatably arranged on the electric energy meter body, the electric energy meter cover is arranged on the rotating shaft, the electric energy meter body is provided with an arc groove, the electric energy meter cover is provided with a rubber block, and the rubber block is slidably arranged on the arc groove.

[0012] As a preferred solution of the switch with built-in electric energy meter of the present invention, a cavity is arranged on the electric energy meter body, and a locking member for locking the electric energy meter cover is arranged on the electric energy meter body.

[0013] As a preferred solution of the switch with built-in electric energy meter described in the present invention, the locking member includes a limit block slidably arranged in the cavity, a spring is arranged on both sides of the limit block, the two ends of the spring are respectively connected to the corresponding surfaces of the cavity and the limit block, a limit groove is arranged on the limit block, and a clamping block is arranged on the meter cover, and the clamping block and the limit groove cooperate with each other.

[0014] As a preferred solution of the switch with built-in electric energy meter of the present invention, a guide block is arranged in the cavity, the limit block is slidably arranged on the guide block, and a release member for releasing the limit of the electric energy meter cover is arranged on the electric energy meter body.

[0015] As a preferred solution of the switch with built-in electric energy meter of the present invention, the release member includes a strip groove arranged on the electric energy meter body, a push column is slidably arranged on the strip groove, and the push column is connected to the limit block.

[0016] As a preferred solution of the switch with built-in electric energy meter of the present invention, the synchronous adjustment component includes a pressurizing groove arranged on the electric energy meter body, a connecting pipe is fixedly passed through the bottom of the pressurizing groove, and the connecting pipe is connected to the annular airbag.

[0017] As a preferred solution of the switch built-in electric energy meter of the present invention, a piston is slidably arranged on the pressurizing groove, and a pressurizing member for driving the annular airbag to inflate is arranged on the electric energy meter body.

[0018] As a preferred solution of the switch with built-in electric energy meter described in the present invention, the pressure-applying member includes an extrusion block arranged on the electric energy meter cover, the extrusion block cooperates with the piston, a spring 2 is arranged on the corresponding surface of the piston and the pressure groove, a guide ring is arranged on the electric energy meter body, the annular airbag is arranged on the corresponding surface of the electric energy meter body and the guide ring, and a sealing member is arranged on the electric energy meter body to seal the hinge between the rotating shaft and the electric energy meter cover.

[0019] As a preferred solution of the switch with built-in electric energy meter described in the present invention, wherein: a cavity is provided on the electric energy meter body, a U-shaped air bag is embedded in the electric energy meter body, the U-shaped air bag is connected to the cavity, a rectangular block is provided on the rotating shaft, pistons are slidably provided on both sides of the rectangular block, a push cylinder is provided on one side of the push plug, the push cylinder is slidably provided on the rectangular block, a guide groove is provided on the push cylinder, an extrusion column is provided in the cavity, and the extrusion column and the guide groove cooperate with each other.

[0020] The beneficial effects of the present invention are as follows: when the meter cover is closed, the meter cover is automatically limited by the cooperation of the limiting component and the synchronous adjustment component, and the annular airbag is driven to inflate at the same time, so that the gap and hinge between the meter cover and the meter body are blocked by the annular airbag, and the meter cover and the meter body are limited at the same time to prevent external moisture from entering the meter body. When the meter cover is unfolded, the meter cover is automatically limited when it is fully unfolded to prevent the meter cover from affecting the staff's inspection of the meter body, and the annular airbag and the U-shaped airbag are contracted at the same time to prevent the expanded annular airbag and the U-shaped airbag from affecting the staff's field of vision when observing the inside of the meter body, thereby solving the technical problem that the sealing effect of the equipment will be affected if the seal is not properly placed during the installation of the switch-built-in meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The figure is a schematic diagram of the overall structure of the switch with built-in electric energy meter according to the present invention.

[0023] Figure 2 It is a schematic diagram of the exploded structure of the built-in electric energy meter of the switch of the present invention.

[0024] Figure 3 The switch of the present invention has a built-in electric energy meter Figure 2 Schematic diagram of the enlarged structure of area A in the middle.

[0025] Figure 4 The figure is a schematic diagram of the partial cross-section structure of the cavity of the switch with built-in electric energy meter of the present invention.

[0026] Figure 5 The switch of the present invention has a built-in electric energy meter Figure 4 Schematic diagram of the enlarged structure of area B in the middle.

[0027] Figure 6 The figure is a schematic diagram of the structure of the pressure-applying component of the switch with a built-in electric energy meter according to the present invention.

[0028] Figure 7 The figure is a schematic structural diagram of a blocking member of a switch with a built-in electric energy meter according to the present invention.

[0029] Figure 8 The figure is a schematic diagram of the overall structure of the U-shaped airbag with a built-in electric energy meter in the switch of the present invention.

[0030] Fig. 9 The diagram is a schematic diagram of the explosion structure of the piston and the push cylinder of the switch with a built-in electric energy meter according to the present invention.

[0031] Fig.10 The figure is a schematic diagram of the component structure of the switch with built-in electric energy meter according to the present invention. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0036] Example 1, reference Figure 1-Figure 3 , which is the first embodiment of the present invention, provides a switch built-in electric energy meter, the device includes an electric energy meter body 100, and also includes

[0037] The electric energy meter cover 101 is rotatably disposed on the electric energy meter body 100;

[0038] The annular airbag 102 is arranged in the electric energy meter body 100. When the annular airbag 102 is inflated, the gap between the electric energy meter cover 101 and the electric energy meter body 100 can be blocked to prevent external moisture from entering the electric energy meter body 100.

[0039] The limiting assembly 200 is arranged on the electric energy meter body 100 and connected to the electric energy meter cover 101. When the electric energy meter cover 101 is rotated and closed, the limiting assembly 200 is used to limit the electric energy meter cover 101, so that the electric energy meter cover 101 is easy to disassemble and the workload of the staff is reduced;

[0040] The synchronous adjustment component 300 is arranged on the electric energy meter body 100 and is connected to the limiting component 200 and the annular airbag 102. When the limiting component 200 is working, the synchronous adjustment component 300 is used to drive the annular airbag 102 to inflate, and the inflation of the annular airbag 102 is used to block the gap between the electric energy meter cover 101 and the electric energy meter body 100.

[0041] Furthermore, the limiting assembly 200 includes a rotating shaft 201 rotatably arranged on the electric energy meter body 100, the electric energy meter cover 101 is arranged on the rotating shaft 201, an arc groove 202 is arranged on the electric energy meter body 100, and a rubber block 203 is arranged on the electric energy meter cover 101. The rubber block 203 is slidably arranged on the arc groove 202. When the electric energy meter cover 101 is rotated and unfolded, the rotating shaft 201 and the rubber block 203 on the electric energy meter cover 101 rotate synchronously, and the rubber block 203 slides along the arc groove 202. The area of ​​the end of the arc groove 202 is larger than the area of ​​the tail. Therefore, when the rubber block 203 slides, the friction will become greater and greater. When the staff fully unfolds the electric energy meter cover 101, the electric energy meter cover 101 is automatically limited. In this way, when the staff inspects the electric energy meter body 100, the electric energy meter cover 101 will not interfere with the staff.

[0042] During use, when the meter cover 101 is rotated and unfolded, the friction between the arc groove 202 and the rubber block 203 causes the meter cover 101 to be automatically limited when the meter cover 101 is fully unfolded, thereby preventing the meter cover 101 from interfering with the work of the staff.

[0043] Example 2, reference Figure 1-Figure 5 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that a cavity 204 is provided on the electric energy meter body 100, and a locking member 205 for locking the electric energy meter cover 101 is provided on the electric energy meter body 100.

[0044] Furthermore, the locking member 205 includes a limit block 205a slidably disposed in the cavity 204, a spring 205b is disposed on both sides of the limit block 205a, and both ends of the spring 205b are respectively connected to the corresponding surfaces of the cavity 204 and the limit block 205a, a limit groove 205c is disposed on the limit block 205a, and a clamping block 205d is disposed on the electric meter cover 101, and the clamping block 205d cooperates with the limit groove 205c, and the limit groove 205c and the clamping block 205d are mutually engaged. The contact part is wedge-shaped. When the meter cover 101 is rotated and closed, the block 205d on the meter cover 101 enters the cavity 204 and squeezes the limit block 205a. The limit block 205a is squeezed and slides. When the block 205d is engaged with the limit groove 205c, the elasticity of the spring 205b drives the limit block 205a to reset, so that the limit groove 205c limits the block 205d, and then the meter cover 101 is automatically limited on the electric energy meter body 100.

[0045] Furthermore, a guide block 206 is provided in the cavity 204, and the limit block 205a is slidably provided on the guide block 206. The guide block 206 guides the limit block 205a when sliding to prevent the limit block 205a from being offset when sliding. A release member 207 for releasing the limit of the meter cover 101 is provided on the electric energy meter body 100.

[0046] Furthermore, the release member 207 includes a strip groove 207a arranged on the electric energy meter body 100, and a pushing column 207b is slidably arranged on the strip groove 207a, and the pushing column 207b is connected to the limit block 205a. When it is necessary to inspect the inside of the electric energy meter body 100, the pushing column 207b is slid, and the pushing column 207b slides along the strip groove 207a. The pushing column 207b drives the limit block 205a to slide along the guide block 206, and the upper limit groove 205c of the limit block 205a slides synchronously, so that the engagement between the limit groove 205c and the block 205d is released, and then the limit between the electric energy meter cover 101 and the electric energy meter body 100 is released, and the staff can rotate and unfold the electric energy meter cover 101.

[0047] The remaining structures are the same as those of Example 1.

[0048] During use, when the meter cover 101 needs to be closed, the meter cover 101 is rotated to close, and the block 205d on the meter cover 101 enters the cavity 204 and squeezes the limit block 205a, and the limit block 205a is squeezed and slides. When the block 205d is engaged with the limit groove 205c, the limit block 205a is reset by the elasticity of the spring 205b, so that the limit groove 205c limits the block 205d, and then the meter cover 101 is automatically limited on the electric energy meter body 100; When it is necessary to release the limit between the meter cover 101 and the meter body 100, the pushing column 207b is pushed along the strip groove 207a by sliding, and the pushing column 207b drives the limit block 205a to slide along the guide block 206, and the upper limit groove 205c of the limit block 205a slides synchronously, so that the engagement between the limit groove 205c and the block 205d is released, and then the limit between the meter cover 101 and the meter body 100 is released, and the staff can rotate and unfold the meter cover 101.

[0049] Example 3, reference Figure 1-Figure 10 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the synchronous adjustment component 300 includes a pressurized groove 301 arranged on the electric energy meter body 100, and a connecting pipe 302 is fixedly penetrated through the bottom of the pressurized groove 301, and the connecting pipe 302 is connected to the annular airbag 102.

[0050] Furthermore, a piston 303 is slidably provided on the pressurizing groove 301. When the piston 303 slides, the piston 303 squeezes the air in the pressurizing groove 301 into the connecting tube 302, and then discharges the air into the annular airbag 102 through the connecting tube 302, so that the annular airbag 102 is inflated. A pressurizing member 304 for driving the annular airbag 102 to inflate is provided on the electric energy meter body 100.

[0051] Furthermore, the pressurizing member 304 includes an extrusion block 304a provided on the meter cover 101, the extrusion block 304a cooperates with the piston 303, and a spring 2 304b is provided on the corresponding surface of the piston 303 and the pressurizing groove 301, and the piston 303 is driven to reset by the spring 2 304b. When the meter cover 101 is rotated and closed, the extrusion block 304a on the meter cover 101 squeezes the piston 303, so that the piston 303 slides, and the piston 303 squeezes the air in the pressurizing groove 301 into the connecting pipe 302, and then discharges the air into the annular airbag 102 through the connecting pipe 302, so that the annular airbag 102 is inflated and expanded. The electric energy meter cover 101 is automatically limited when it rotates and closes, so that the inflated annular airbag 102 remains inflated to prevent external moisture from entering the electric energy meter body 100. A guide ring 305 is provided on the electric energy meter body 100, and a blocking member is provided on the electric energy meter body 100 to block the hinge between the rotating shaft 201 and the electric energy meter cover 101. The annular airbag 102 306 is arranged on the corresponding surface of the electric energy meter body 100 and the guide ring 305. When the annular airbag 102 is inflated, it is guided by the guide ring 305 to prevent the annular airbag 102 from affecting the internal components of the electric energy meter body 100 when it expands.

[0052] Furthermore, a cavity 306a is provided on the electric energy meter body 100, a U-shaped airbag 306b is embedded in the electric energy meter body 100, the U-shaped airbag 306b is connected to the cavity 306a, a rectangular block 306c is provided on the rotating shaft 201, both sides of the rectangular block 306c are slidably provided with a top plug 306d, one side of the top plug 306d is provided with a top cylinder 306e, the top cylinder 306e is slidably provided on the rectangular block 306c, and the top cylinder 306e is provided with a guide groove 306f, and an extrusion column 306g is provided in the cavity 306a, and the extrusion column 306g cooperates with the guide groove 306f. When the electric energy meter cover 101 is rotated and closed, the rectangular block 306c on the rotating shaft 201 is simultaneously The pushing cylinder 306e drives the pushing plug 306d to move toward each other synchronously, and the pushing plug 306d discharges the gas in the cavity 306a into the U-shaped airbag 306b, so that the U-shaped airbag 306b expands, and the annular airbag 102 is squeezed by the expanded U-shaped airbag 306b, and the hinge between the rotating shaft 201 and the electric energy meter body 100 is blocked by the annular airbag 102, so as to prevent external moisture from entering from the hinge between the rotating shaft 201 and the electric energy meter body 100.

[0053] The remaining structure is the same as that of Example 2.

[0054] How it works

[0055] When in use, when the meter cover 101 is rotated and closed, the block 205d on the meter cover 101 enters the cavity 204 and squeezes the limit block 205a, and the limit block 205a is squeezed and slides. When the block 205d is engaged with the limit groove 205c, the limit block 205a is reset by the elasticity of the spring 205b, so that the limit groove 205c limits the block 205d, and then the meter cover 101 is automatically limited on the electric energy meter body 100, and at the same time, the squeezing block 304a on the meter cover 101 squeezes the piston 303, so that the piston 303 slides, the piston 303 squeezes the air in the pressurizing groove 301 into the connecting pipe 302, and then discharges the air into the annular airbag 102 through the connecting pipe 302, so that the annular airbag 102 is inflated, and at the same time, the rectangular block 306c on the rotating shaft 201 rotates synchronously, the ejector plug 306d and the ejector cylinder 306e on the rectangular block rotate synchronously, and the extrusion column 306g squeezes the guide groove 306f on the ejector cylinder 306e, so that the ejector cylinders 306e on both sides of the rectangular block 306c are positioned toward each other. The push cylinder 306e drives the push plug 306d to move synchronously, and the push plug 306d discharges the gas in the cavity 306a into the U-shaped airbag 306b, so that the U-shaped airbag 306b expands, and the expanded U-shaped airbag 306b squeezes the annular airbag 102, and the annular airbag 102 blocks the hinge between the rotating shaft 201 and the electric energy meter body 100, preventing external moisture from entering from the hinge between the rotating shaft 201 and the electric energy meter body 100. When the electric energy meter cover 101 needs to be rotated and unfolded, the sliding push cylinder 306e drives the push plug 306d to move synchronously, and the push plug 306d discharges the gas in the cavity 306a into the U-shaped airbag 306b, so that the U-shaped airbag 306b expands, and the annular airbag 102 is squeezed to block the hinge between the rotating shaft 201 and the electric energy meter body 100, and prevents external moisture from entering from the hinge between the rotating shaft 201 and the electric energy meter body 100. The moving column 207b pushes the column 207b to slide along the strip groove 207a, and the pushing column 207b drives the limit block 205a to slide along the guide block 206, and the upper limit groove 205c of the limit block 205a slides synchronously, so that the engagement between the limit groove 205c and the block 205d is released, and then the limit between the meter cover 101 and the electric energy meter body 100 is released, and at the same time, the piston 303 is reset, and the annular airbag 102 is contracted to prevent the expanded annular airbag 102 from affecting the staff's field of vision of observing the inside of the electric energy meter body 100.

[0056] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0057] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A switch-mounted electric energy meter, comprising an electric energy meter body (100), Features: It also includes an electric meter cover (101) which is rotatably arranged on the electric energy meter body (100); An annular air bag (102) is arranged in the electric energy meter body (100); A limiting component (200) is arranged on the electric energy meter body (100) and connected to the electric energy meter cover (101); when the electric energy meter cover (101) is rotated to close, the limiting component (200) is used to limit the electric energy meter cover (101); The synchronous adjustment component (300) is arranged on the electric energy meter body (100) and is connected to the limit component (200) and the annular airbag (102). When the limit component (200) is working, the synchronous adjustment component (300) is used to drive the annular airbag (102) to inflate.

2. The switch with built-in electric energy meter according to claim 1, Features: The limit assembly (200) comprises a rotating shaft (201) rotatably arranged on the electric energy meter body (100), the electric energy meter cover (101) is arranged on the rotating shaft (201), the electric energy meter body (100) is provided with an arc groove (202), the electric energy meter cover (101) is provided with a rubber block (203), and the rubber block (203) is slidably arranged on the arc groove (202).

3. The switch with built-in electric energy meter according to claim 2, Features: The electric energy meter body (100) is provided with a cavity (204), and the electric energy meter body (100) is provided with a locking member (205) for locking the electric energy meter cover (101).

4. The switch with built-in electric energy meter according to claim 3, Features: The locking member (205) comprises a limit block (205a) slidably arranged in the cavity (204); springs (205b) are arranged on both sides of the limit block (205a); two ends of the spring (205b) are respectively connected to corresponding surfaces of the cavity (204) and the limit block (205a); a limit groove (205c) is arranged on the limit block (205a); a clamping block (205d) is arranged on the meter cover (101); and the clamping block (205d) cooperates with the limit groove (205c).

5. The switch with built-in electric energy meter according to claim 4, Features: A guide block (206) is arranged in the cavity (204), the limit block (205a) is slidably arranged on the guide block (206), and a release member (207) for releasing the limit of the meter cover (101) is arranged on the electric energy meter body (100).

6. The switch with built-in electric energy meter according to claim 5, Features: The release member (207) comprises a strip groove (207a) arranged on the electric energy meter body (100), a push column (207b) is slidably arranged on the strip groove (207a), and the push column (207b) is connected to the limit block (205a).

7. The switch with built-in electric energy meter according to claim 6, Features: The synchronous adjustment component (300) comprises a pressurizing groove (301) arranged on the electric energy meter body (100), a connecting pipe (302) fixedly penetrates the bottom of the pressurizing groove (301), and the connecting pipe (302) is connected to the annular airbag (102).

8. The switch with built-in electric energy meter according to claim 7, Features: A piston (303) is slidably disposed on the pressurizing groove (301), and a pressurizing member (304) for driving the annular airbag (102) to inflate is disposed on the electric energy meter body (100).

9. The switch with built-in electric energy meter according to claim 8, Features: The pressurizing member (304) comprises an extrusion block (304a) arranged on the electric meter cover (101), the extrusion block (304a) cooperates with the piston (303), a spring 2 (304b) is arranged on the corresponding surfaces of the piston (303) and the pressurizing groove (301), a guide ring (305) is arranged on the electric energy meter body (100), the annular airbag (102) is arranged on the corresponding surfaces of the electric energy meter body (100) and the guide ring (305), and a blocking member (306) is arranged on the electric energy meter body (100) for sealing the hinge between the rotating shaft (201) and the electric energy meter cover (101).

10. The switch with built-in electric energy meter according to claim 9, Features: The electric energy meter body (100) is provided with a cavity (306a), a U-shaped air bag (306b) is embedded in the electric energy meter body (100), the U-shaped air bag (306b) is communicated with the cavity (306a), a rectangular block (306c) is provided on the rotating shaft (201), both sides of the rectangular block (306c) are slidably provided with push plugs (306d), one side of the push plug (306d) is provided with a push cylinder (306e), the push cylinder (306e) is slidably provided on the rectangular block (306c), the push cylinder (306e) is provided with a guide groove (306f), an extrusion column (306g) is provided in the cavity (306a), and the extrusion column (306g) and the guide groove (306f) cooperate with each other.

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