Special clamp for measuring voltage of meter

Abstract

The invention relates to the technical field of voltage measurement, in particular to a special clamp for meter voltage measurement, and the clamp comprises an insulation assembly which comprises a first insulation handle and an insulation part which is arranged at the end part of the first insulation handle and is used for connecting an external plug, and an extension baffle plate is arranged on the side wall of the first insulation handle and is used for limiting the holding distance; and the clamping assembly comprises clamping pieces arranged at the ends of the first insulating handle and the insulating piece and used for being clamped outside the electric energy meter, and two copper spring ejector pins can be automatically adjusted according to the interval of bolt grooves of the electric energy meter so as to adapt to different sizes and keep firm contact. The heat shrink tube wrapping the insulating handle and the spring ejector pin ensures that an operator is away from the risk of direct electrical contact in the using process, and the possibility of electric shock is reduced. In addition, the lower groove effectively prevents accidental falling in the operation process, and the stability and reliability of connection are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of voltage measurement, and in particular to a special clamp for voltage measurement of a meter. Background Art

[0002] In order to ensure the metering accuracy of the energy meter, the energy meter needs to be tested for errors regularly. This process involves a lot of energy meter calibration work. However, in actual operation, the voltage value is usually obtained by directly clamping the alligator clip on the voltage terminal screw cap of the energy meter. Since the thickness of the screw cap is only 2 to 3 mm, this connection method is very easy to loosen, causing the alligator clip to fall off frequently, which not only affects the stability of the test work, but also reduces the work efficiency.

[0003] In addition, during manual operation, the operator's hands are very close to the live screw cap, which increases the risk of accidentally touching the live part, thus posing a potential threat to the operator's safety. Therefore, it is particularly necessary to improve the operation method of this link to improve the reliability and safety of the test. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problem that the alligator clip mentioned above frequently falls off, which not only affects the stability of the test work but also the operator's hand is very close to the live nut, increasing the risk of accidentally touching the live part, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a special clamp for voltage measurement of a meter.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: A special clamp for voltage measurement of a meter, comprising: an insulating assembly, comprising a first insulating handle, an insulating member for connecting an external plug installed at the end of the first insulating handle, and an extended baffle installed on the side wall of the first insulating handle for limiting the holding distance;

[0008] The clamping assembly comprises a clamping member arranged at the first insulating handle and the end of the insulating member for clamping outside the electric energy meter, and the clamping member is used to maintain the connection stability of the spring thimble.

[0009] As a preferred solution of the special clamp for voltage measurement of the meter described in the present invention, the insulating part includes a second insulating handle arranged on the side wall of the first insulating handle, the first insulating handle and the extended baffle combination are in an "L" shape in a side view, and the first insulating handle and the second insulating handle are made of rubber and high-quality insulating material on the outside.

[0010] As a preferred solution of the special clamp for voltage measurement of a meter described in the present invention, the insulating member further comprises a quick connection port arranged at the end of the second insulating handle away from the clamping member, and the quick connection port is adapted to a 4mm rubber plug.

[0011] As a preferred solution of the special clamp for voltage measurement of the meter described in the present invention, the clamping member also includes a first clamping plate arranged at the end of the first insulating handle, and a second clamping plate is installed at the end of the second insulating handle, and the first clamping plate and the second clamping plate are hinged by a spring axis.

[0012] As a preferred solution of the special clamp for measuring voltage of the meter described in the present invention, the clamping member also includes a lower groove arranged on the side wall of the first clamping plate, the side view of the lower groove is rectangular, and the lower groove matches the outer edge of the electric energy meter.

[0013] As a preferred solution of the special clamp for measuring voltage of the meter described in the present invention, the electric energy meter includes a connecting bolt arranged at the bottom end of the spring ejector pin, the connecting bolt is located inside the bolt groove, and the bolt groove is arranged in upper and lower layers.

[0014] As a preferred solution of the special clamp for voltage measurement of the meter described in the present invention, the spring ejector includes an ejector body arranged at the top of the connecting bolt, the side wall of the ejector body is sleeved with a fixing tube, and the fixing tube is connected to the second clamping plate.

[0015] As a preferred solution of the special clamp for measuring voltage of a meter described in the present invention, the spring ejector further comprises a telescopic spring arranged between the ejector body and the fixed cylinder, the telescopic spring is located inside the fixed cylinder, and one end of the telescopic spring is connected to the fixed cylinder, and the end of the telescopic spring away from the fixed cylinder is connected to the ejector body.

[0016] As a preferred solution of the special clamp for voltage measurement of the meter described in the present invention, the elastic stroke of the spring ejector pin is 10 mm, the lower groove will have an elastic compression of 2 mm after being clamped, and the outside of the spring ejector pin is wrapped with a heat shrink tube.

[0017] As a preferred solution of the special clamp for voltage measurement of the meter described in the present invention, the lower groove is divided into two levels, and the spring ejector pin is made of copper material, and the distance between the two spring ejector pins is consistent with the distance between the connection bolts.

[0018] Beneficial effects of the present invention: The present invention includes two copper spring thimbles, which can be automatically adjusted according to the spacing of the bolt slots of the electric energy meter to adapt to different sizes and maintain firm contact. The heat shrink tube wrapped around the insulating handle and the spring thimble ensures that the operator is away from the risk of direct electrical contact during use, reducing the possibility of electric shock. In addition, the lower groove effectively prevents accidental falling off during operation, ensuring the stability and reliability of the connection. This design optimizes the traditional electric energy meter testing method, improves the efficiency of the test, and reduces the operational risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without any creative labor.

[0020] Figure 1 The figure is an overall schematic diagram of a special clamp for voltage measurement of a meter.

[0021] Figure 2 The present invention is a side view of the cross-sectional structure of a special clamp for voltage measurement of a meter.

[0022] Figure 3 The present invention is a schematic diagram of the structure of a clamping assembly of a special clamp for voltage measurement of a meter.

[0023] Figure 4 The present invention is a schematic diagram of the side view structure of a clamping assembly of a special clamp for voltage measurement of a meter.

[0024] Figure 5 The present invention is a schematic diagram of the cross-sectional structure of a spring ejector pin of a special clamp for voltage measurement of a meter.

[0025] Reference numerals:

[0026] 100, insulating assembly; 101, first insulating handle; 102, insulating member; 103, extension baffle;

[0027] 102a, second insulating handle; 102b, quick connection port;

[0028] 200, clamping assembly; 201, clamping member; 202, electric energy meter; 203, spring ejector pin;

[0029] 201a, first clamping plate; 201b, second clamping plate; 201c, spring shaft; 201d, lower groove;

[0030] 202a, connection bolt; 202b, bolt groove;

[0031] 203a, ejector body; 203b, fixing tube; 203c, telescopic spring. 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 implementation methods 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 does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[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 1-2 , which is the first embodiment of the present invention, provides a special clamp for measuring voltage of a meter, including, through the insulating component 100 and the clamping component 200, not only the safety and accuracy of the electric energy meter test are ensured, but also the special clamp can achieve efficient and accurate voltage measurement without damaging the electric energy meter.

[0037] Specifically, the insulating assembly 100 includes a first insulating handle 101, an insulating member 102 for connecting an external plug is installed at the end of the first insulating handle 101, and an extension baffle 103 is installed on the side wall of the first insulating handle 101 to limit the holding distance;

[0038] Furthermore, the clamping assembly 200 includes a clamping member 201 disposed at the first insulating handle 101 and the end of the insulating member 102 for clamping outside the electric energy meter 202 , and the clamping member 201 is used to maintain the connection stability of the spring ejector pin 203 .

[0039] Operation process: The special electric energy meter test clip includes a copper elastic retractable spring pin 203, an insulating component 100 and a 0.5mm thick stainless steel clamp 201 clip. The spring pin 203 adopts a double pin design, and the pin can automatically adjust according to the size of the terminal bolt 202a on the electric energy meter 202 to ensure a firm contact with the terminal of the electric energy meter 202, so as to accurately obtain the voltage reading. The insulating component 100 is made of high-quality insulating materials, providing a safe and reliable operating experience and reducing the risk of accidentally touching the wire. This design not only improves the accuracy of the test, but also greatly improves the safety of the test process.

[0040] Example 2, reference Figure 1 to Figure 4 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that the safety and convenience of operation are further improved by adding a second insulating handle 102a and improving the quick connection port 102b, while maintaining the original stability and accuracy.

[0041] Specifically, the insulating part 102 includes a second insulating handle 102a arranged on the side wall of the first insulating handle 101. The first insulating handle 101 and the extended baffle 103 are combined in an "L" shape in a side view. The first insulating handle 101 and the second insulating handle 102a are made of rubber and high-quality insulating material.

[0042] Furthermore, the insulating member 102 further includes a quick connection port 102b disposed at the end of the second insulating handle 102a away from the clamping member 201, and the quick connection port 102b is adapted to a 4mm rubber plug.

[0043] The rest of the structure is the same as that of Example 1.

[0044] Operation process: A quick connection port 102b is added to the second insulating handle 102a, which can be connected to a 4mm banana plug that is compatible with a variety of test equipment. In addition, the design of the clamp 201 specifically enhances the stability and safety of the electrical connection. The spacing between the two copper spring ejectors 203 is consistent with the spacing between the two nuts at the electric energy meter 202, and can be extended by 10mm stroke to ensure good contact on the terminal bolts 202a of electric energy meters 202 of different sizes. In addition, in order to improve safety, the outside of the ejector is wrapped with a heat shrink tube to effectively avoid the risk of electric shock during operation. The clip is also designed with an anti-drop groove 201d to ensure that the clip will not accidentally fall off in various operating environments, thereby increasing stability during use. These improvements make the clamp 201 not only provide a fast and flexible connection method, but also ensure the safety and accuracy of the test.

[0045] Example 3, reference Figure 2 to Figure 5 , which is the third embodiment of the present invention, is different from the above embodiments in that the safety and convenience of operation are further improved by adding a hinge mechanism of the first clamping plate 201a and the second clamping plate 201b and a design of the lower groove 201d, while maintaining the original stability and accuracy.

[0046] Specifically, the clamping member 201 further includes a first clamping plate 201a disposed at the end of the first insulating handle 101, and a second clamping plate 201b is installed at the end of the second insulating handle 102a. The first clamping plate 201a and the second clamping plate 201b are hinged via a spring shaft 201c.

[0047] Furthermore, the clamping member 201 further includes a lower groove 201d arranged on the side wall of the first clamping plate 201a. The lower groove 201d is rectangular in side view, and the lower groove 201d matches the outer edge of the electric energy meter 202.

[0048] Furthermore, the electric energy meter 202 includes a terminal bolt 202a disposed at the bottom end of the spring ejector pin 203, the terminal bolt 202a is located inside the bolt slot 202b, and the bolt slot 202b is arranged in upper and lower layers.

[0049] Furthermore, the spring ejector 203 includes an ejector body 203a disposed at the top of the connecting bolt 202a, and a fixing tube 203b is sleeved on the side wall of the ejector body 203a, and the fixing tube 203b is connected to the second clamping plate 201b.

[0050] Furthermore, the spring ejector 203 also includes a telescopic spring 203c arranged between the ejector body 203a and the fixed cylinder 203b, the telescopic spring 203c is located inside the fixed cylinder 203b, and one end of the telescopic spring 203c is connected to the fixed cylinder 203b, and the end of the telescopic spring 203c away from the fixed cylinder 203b is connected to the ejector body 203a.

[0051] Furthermore, the elastic stroke of the spring ejector pin 203 is 10 mm, and the lower groove 201d thereof will be elastically compressed by 2 mm after being clamped, and the outside of the spring ejector pin 203 is wrapped with a heat shrink tube.

[0052] Furthermore, the lower groove 201d is divided into two levels, and the spring ejector pin 203 is made of copper, and the distance between the two spring ejector pins 203 is consistent with the distance between the connection bolts 202a.

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

[0054] Operation process: This embodiment further optimizes the anti-slip design of the first clamping plate 201a and the second clamping plate 201b. In this design, the lower groove 201d of the clamp is refined into two levels to match the upper and lower staggered bolt grooves 202b, while ensuring that at least one of the clamps can bend and contact for conductivity when clamping, and preventing the operator from making conductive contact through the adaptive stroke of the spring column even if the clamp is not fully clamped during clamping. This structure not only further improves the stability and reliability of the clamp, but also allows the operator to complete the installation quickly and safely in different working environments, ensuring that the clamp is always firmly fixed to the voltage terminal of the electric energy meter 202 during the test. In addition, the improved design also simplifies the use steps of the clamp, making the operation more convenient and intuitive, and reducing the possibility of operating errors.

[0055] 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 special clamp for voltage measurement of a meter, characterized in that: include, An insulating assembly (100) comprises a first insulating handle (101), an insulating member (102) provided at the end of the first insulating handle (101) and used for connecting an external plug, and an extended baffle (103) provided on the side wall of the first insulating handle (101) for limiting a holding distance; The clamping assembly (200) comprises a clamping member (201) arranged at the end of the first insulating handle (101) and the insulating member (102) and used for clamping outside the electric energy meter (202), and the clamping member (201) is used for maintaining the connection stability of the spring ejector pin (203).

2. The special clamp for voltage measurement of a meter as claimed in claim 1, characterized in that: The insulating member (102) comprises a second insulating handle (102a) arranged on the side wall of the first insulating handle (101); the first insulating handle (101) and the extended baffle (103) are arranged in an "L" shape in a combined side view; the first insulating handle (101) and the second insulating handle (102a) are made of rubber and high-quality insulating material.

3. The special clamp for voltage measurement of a meter as claimed in claim 2, characterized in that: The insulating member (102) further comprises a quick connection port (102b) arranged at the end of the second insulating handle (102a) away from the clamping member (201), and the quick connection port (102b) is adapted to a 4mm rubber plug.

4. The special clamp for voltage measurement of a meter as claimed in claim 3, characterized in that: The clamping member (201) further comprises a first clamping plate (201a) arranged at the end of the first insulating handle (101), a second clamping plate (201b) is installed at the end of the second insulating handle (102a), and the first clamping plate (201a) and the second clamping plate (201b) are hingedly connected via a spring shaft (201c).

5. The special clamp for voltage measurement of a meter as claimed in claim 4, characterized in that: The clamping member (201) further comprises a lower groove (201d) arranged on the side wall of the first clamping plate (201a); the lower groove (201d) is rectangular in side view, and the lower groove (201d) matches the outer edge of the electric energy meter (202).

6. The special clamp for voltage measurement of a meter as claimed in claim 5, characterized in that: The electric energy meter (202) comprises a connection bolt (202a) arranged at the bottom end of the spring ejector pin (203); the connection bolt (202a) is located inside a bolt slot (202b), and the bolt slot (202b) is arranged in an upper and lower staggered manner.

7. The special clamp for voltage measurement of a meter as claimed in claim 6, characterized in that: The spring ejector (203) comprises an ejector body (203a) arranged at the top end of the connecting bolt (202a), and a fixing tube (203b) is sleeved on the side wall of the ejector body (203a), and the fixing tube (203b) is connected to the second clamping plate (201b).

8. The special clamp for voltage measurement of a meter as claimed in claim 7, characterized in that: The spring ejector (203) further comprises a telescopic spring (203c) arranged between the ejector body (203a) and the fixed cylinder (203b); the telescopic spring (203c) is located inside the fixed cylinder (203b), and one end of the telescopic spring (203c) is connected to the fixed cylinder (203b); and one end of the telescopic spring (203c) away from the fixed cylinder (203b) is connected to the ejector body (203a).

9. The special clamp for voltage measurement of a meter as claimed in claim 8, characterized in that: The elastic stroke of the spring ejector pin (203) is 10 mm, and the lower groove (201d) thereof will be elastically compressed by 2 mm after being clamped, and the outside of the spring ejector pin (203) is wrapped with a heat shrink tube.

10. The special clamp for voltage measurement of a meter as claimed in claim 9, characterized in that: The lower groove (201d) is divided into two levels, and the spring ejector pin (203) is made of copper, and the distance between the two spring ejector pins (203) is consistent with the distance between the connection bolts (202a).

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