Electric energy meter voltage test terminal

Abstract

The invention relates to the technical field of voltage test terminals, in particular to an electric energy meter voltage test terminal, which comprises a terminal strip body, a terminal block, a terminal block, a terminal block and a terminal block, and a plug; and the control assembly comprises an operation clamp movably matched with the plug, a shell arranged on the terminal strip body, a first accommodating cavity and a second accommodating cavity which are respectively arranged in the shell, and a rotary button arranged outside the shell, and the inserted plug can be fastened by using the operation clamp by rotating the rotary button so as to prevent the plug from being accidentally pulled out. When the rotary button is continuously rotated, the operation clamp can pull out the plug and loosen and fasten the plug, at the moment, the worker can easily take out the plug, circuit component disconnection caused by overlarge tension is avoided, and potential safety hazards are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of voltage test terminals, in particular to a voltage test terminal for an electric energy meter. Background Art

[0002] When calibrating an energy meter or checking for wiring errors, a common problem is that the voltage terminal screws of the energy meter are short, which causes the alligator clips to be loosely connected during instrument testing, which may cause a short circuit and pose a threat to safety. To solve this problem, an independent voltage test terminal can be added to the terminal block of the energy meter to ensure that the connection of the test instrument is firm and reliable, avoid instantaneous short circuits caused by connection problems, and ensure personnel safety.

[0003] During the test, the stable connection of the plug is crucial to the normal operation of the electric energy meter and the accuracy of the test. To avoid accidental collision or poor connection, it is necessary to ensure a firm connection between the plug and the socket during operation. After the test is completed, the plug should be pulled out carefully to avoid excessive pulling force causing the contact or line components to be disconnected, so as to avoid equipment damage or safety hazards. We propose an electric energy meter voltage test terminal. Summary of the invention

[0004] In view of the above existing technical problems, the present invention is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a voltage test terminal of an electric energy meter, comprising a terminal block body, including a socket and an insulating sleeve arranged on the periphery of the socket; and a plug; and a control component, including an operating clip that movably cooperates with the plug, a shell arranged on the terminal block body, a first accommodating cavity and a second accommodating cavity respectively arranged in the shell, and a knob arranged outside the shell.

[0006] As a preferred solution of the voltage test terminal of the electric energy meter of the present invention, a connecting plate is provided under the shell, and a fixing plate is provided on the inner wall of the shell.

[0007] As a preferred solution of the voltage test terminal of the electric energy meter of the present invention, a disc is arranged in the shell, an annular groove is formed between the disc and the shell, and a fixing column is arranged between the disc and the fixing plate.

[0008] As a preferred solution of the voltage test terminal of the electric energy meter of the present invention, wherein: a positioning cavity is provided on the fixed plate, a through slot is penetrated through the outer wall of the knob, a movable column is movably provided in the through slot, and a pull ring is provided at one end of the movable column.

[0009] As a preferred solution of the voltage test terminal of the electric energy meter of the present invention, the movable column is movably matched with the annular groove, an elastic part is provided at the other end of the movable column, a ball seat is provided on one side of the elastic part, a rolling ball is provided in the ball seat, and the rolling ball is movably matched with the positioning cavity.

[0010] As a preferred solution of the voltage test terminal of the electric energy meter of the present invention, wherein: the outer wall of the knob is provided with a rotating shaft, the outer wall of the rotating shaft is provided with a connecting rod, one end of the connecting rod is provided with a rotating column, and the outer wall of the rotating column is provided with a transmission gear.

[0011] As a preferred solution of the voltage test terminal of the electric energy meter of the present invention, wherein: an inner gear is provided on the outer wall of the fixing plate, and the inner gear cooperates with the transmission gear.

[0012] As a preferred solution of the voltage test terminal of the electric energy meter of the present invention, wherein: the outer wall of the transmission gear is provided with a connecting shaft, the outer wall of the connecting shaft is provided with a connecting rod, and one end of the connecting rod is provided with a matching column.

[0013] As a preferred solution of the voltage test terminal of the electric energy meter of the present invention, wherein: the outer wall of the matching column is provided with a movable rod, the movable rod is fixedly connected to the operating clamp, the fixed plate is provided with a groove, the groove is provided with a slider, and the slider is provided with a matching groove.

[0014] As a preferred solution of the voltage test terminal of the electric energy meter of the present invention, wherein: the matching groove is movably matched with the movable rod, the outer wall of the second accommodating cavity is provided with a through groove, and the through groove is movably matched with the movable rod.

[0015] The beneficial effects of the present invention are as follows: after the plug is inserted into the socket, the knob is turned, and then the connecting rod drives the transmission gear to rotate, and the transmission gear meshes with the internal gear to make the transmission gear rotate, and then the matching column drives the movable rod, so that the operating clip on the movable rod is clamped toward the plug, to prevent the plug from falling off due to accidental pulling or collision during detection. When the plug needs to be unplugged, in order to avoid damage to the equipment due to staff misoperation or hasty pulling of the plug, through this arrangement, the staff can continue to turn the knob, so that the movable rod drives the operating clip to move upward first, helping to pull out the plug, and then the movable rod will drive the operating clip away from the plug. At this time, the plug has been pulled out and loose, and the staff only needs to take it out directly, which is labor-saving and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 paying creative work.

[0017] Figure 1 It is a schematic diagram of the plug connection structure in the present invention.

[0018] Figure 2 It is a schematic diagram of the insulating sleeve connection structure in the present invention.

[0019] Figure 3 It is a schematic diagram of the terminal block body connection structure in the present invention.

[0020] Figure 4 It is a schematic diagram of the connection structure of the control components in the present invention.

[0021] Figure 5 It is a schematic diagram of the internal connection structure of the shell in the present invention.

[0022] Figure 6 It is a schematic diagram of the annular groove connection structure in the present invention.

[0023] Figure 7 It is a schematic diagram of the internal gear connection structure in the present invention.

[0024] Figure 8 It is a schematic diagram of the movable column connection structure in the present invention.

[0025] Fig. 9 It is a schematic diagram of the movable rod connection structure in the present invention. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Example 1, reference Figure 1 to Figure 4, which is the first embodiment of the present invention, provides a voltage test terminal for an electric energy meter. By setting a control component 300, a worker turns a knob 302b to enable the operating clamp 301 to complete operations such as tightening, pulling out, and loosening the plug 200, thereby ensuring reliable electrical connection.

[0030] Specifically, the terminal block body 100 includes a socket 101a and an insulating sleeve 101b arranged on the periphery of the socket 101a; and a plug 200; and a control component 300, including an operating clamp 301 that movably cooperates with the plug 200, a shell 302 arranged on the terminal block body 100, a first accommodating cavity 302c and a second accommodating cavity 302d respectively arranged in the shell 302, and a knob 302b arranged outside the shell 302.

[0031] The operating clip 301 is arc-shaped and can fit the outer wall of the plug 200; when the plug 200 is inserted into the socket 101a, the control component 300 is symmetrically arranged on both sides of each plug 200; the setting of the knob 302b is mainly to facilitate the staff to rotate and adjust; the shell 302 is divided into a first accommodating chamber 302c and a second accommodating chamber 302d by the fixing plate 303; by rotating the knob 302b, the movement of the operating clip 301 can be further controlled.

[0032] Preferably, Figure 1 The electric energy meter terminal has four voltage test terminals for a three-phase four-wire electric energy meter. The plug 101a is a hollow metal cylindrical thin wall made of the same material as the electric energy meter terminal, and is reliably connected to the plug 200 on the voltage test line of the existing measuring instrument by metal to provide the instrument with voltage measurement; the insulating sleeve 101b in the terminal is mainly an insulating cylindrical thin wall made of the same insulating material as the electric energy meter. The thin wall mainly fixes the hollow metal cylindrical thin wall of the plug 101a in the terminal, so that the instrument voltage test plug is stably connected to prevent the plug from bouncing.

[0033] At present, the voltage terminals of the electric energy meter are all crimped with two screws of the same size for secondary wire crimping. Due to the production process of the electric energy meter manufacturer, in the actual work of the existing electric energy metering and maintenance, when the electric energy meter is calibrated and the wrong wiring is judged, the meter voltage test alligator clip is often used to directly clamp the voltage terminal screws of each phase of the electric energy meter for voltage sampling. The alligator clip of the meter will be short due to the short voltage terminal screws of the electric energy meter, resulting in the alligator clip bouncing and the exposed parts of the alligator clips of each phase close to each other, resulting in the electric energy meter voltage phase short circuit and the instantaneous short circuit between the voltage and current of the electric energy meter, forming high voltage and large current, thereby endangering the safety of personnel and equipment; at the same time, during the test, in order to avoid the bouncing of the alligator clip, a special person is required to support the alligator clip, which is not convenient for actual work on site; by independently adding a dedicated voltage test terminal to the voltage terminal of the electric energy meter, the added test terminal is lengthened to a certain extent and made into a hollow tubular structure. At the same time, insulation processing is performed at intervals of a certain wire diameter on the periphery of the added independent voltage test terminal, and the processing height is consistent with the height of the independent voltage terminal, so as to achieve the existing plug-in voltage insulation test line on the market to be directly inserted into the voltage test terminal of the electric energy meter, and realize the test instrument voltage test line to be directly inserted into the voltage test terminal of the electric energy meter, and realize the reliable connection between the test instrument voltage test line and the electric energy meter test voltage terminal, which is not easy to be electrically shocked and easy to plug and unplug, thereby reducing the voltage phase or the instantaneous short circuit between the voltage and current terminals of the electric energy meter caused by the bouncing of the alligator clip during the calibration of the electric energy meter and the fault test of the wrong wiring, which seriously affects the safety of people and equipment. The separately designed voltage test line is used to connect the test instrument and the voltage terminal of the electric energy meter, which is convenient for measuring the phase angle between line voltages when using a double-clamp volt-ampere phase meter for testing in the case of wrong wiring, etc.

[0034] Example 2, reference Figures 1 to 9 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that two positioning cavities 303a are provided on the fixing plate 303 to complete the rotation of the knob 302b to a preset position; when the knob 302b is rotated into one of the positioning cavities 303a, the operating clamp 301 completes the tightening action of the plug 200 to ensure a stable connection with the socket 101a to prevent the plug 200 from being easily pulled out; and when the knob 302b continues to be rotated into the other positioning cavity 303a, the operating clamp 301 clamps the plug 200 and moves upward to pull it out. After pulling it out, the operating clamp 301 will loosen the plug 200, so that the staff can easily take out the plug 200 and prevent the plug 200 from being pulled out directly with excessive force.

[0035] Specifically, a connecting plate 302 a is provided below the shell 302 , and a fixing plate 303 is provided on the inner wall of the shell 302 .

[0036] Preferably, a disc 304 is disposed in the housing 302 , an annular groove 304 a is formed between the disc 304 and the housing 302 , and a fixing column 303 b is disposed between the disc 304 and the fixing plate 303 .

[0037] Preferably, a positioning cavity 303a is provided on the fixing plate 303, a through slot 302b-2 is penetrated through the outer wall of the knob 302b, a movable column 305 is movably provided in the through slot 302b-2, and a pull ring 305a is provided at one end of the movable column 305.

[0038] Preferably, the movable column 305 is movably matched with the annular groove 304a, an elastic member 305b is provided at the other end of the movable column 305, a ball seat 305b-1 is provided on one side of the elastic member 305b, a rolling ball 305b-11 is provided in the ball seat 305b-1, and the rolling ball 305b-11 is movably matched with the positioning cavity 303a.

[0039] The housing 302 is fixed to the terminal block body 100 through the connecting plate 302a; the disc 304 is fixedly installed through the fixing column 303b, and the arrangement of the disc 304 is mainly used to stably place the rotating shaft 302b-1 without affecting its rotation; the positioning cavity 303a is preferably provided with two, such as Figure 7 When the knob 302b is rotated, the movable column 305 is driven to rotate. At this time, the movable column 305 rotates in the annular groove 304a, and the ball 305b-11 rolls on the fixed plate 303. When the knob 302b is rotated and the ball 305b-11 is snapped into the Q point, the operating clip 301 is now fastened to the plug 200 and the knob 302b is snapped in place. When the knob 302b is to be further rotated, that is, when the plug 200 needs to be unplugged, the pull ring 305a is pulled, and under the action of the elastic member 305b, the ball 305b-11 is disengaged from the positioning cavity 303a, and then the knob 302b is rotated to allow the operating clip 301 to be fastened to the plug 200. The clamp 301 will move upward, and the operating clamp 301 clamps the plug 200 upward together, thereby completing the action of pulling out the plug 200. As the knob 302b continues to rotate, the operating clamp 301 will move away from the plug 200 and release its fastening, that is, the ball 305b-11 will fall into point P. At this time, the plug 200 and the socket 101a are loose, and the staff only needs to take it out gently to avoid wear of the contact parts due to improper pulling force on the plug 200. The operating clamp 301 can be controlled by rotating the knob 302b to complete the actions of fastening, pulling out, and loosening the plug 200; the elastic member 305b is preferably a compression spring.

[0040] In summary, if Fig. 9As shown, when the knob 302b is rotated clockwise, the ball 305b-11 first falls into point Q, and the operating clamp 301 will tighten the plugged in plug 200 to ensure a stable connection with the socket 101a during equipment testing, and then pull the pull ring 305a to move the ball 305b-11 out of point Q, and rotate the knob 302b to move it to point P. At this time, the operating clamp 301 will complete the action of pulling out and releasing the plug 200, making it convenient for the staff to directly take out the plug 200. The overall setting is very simple and easy to operate.

[0041] Example 3, reference Figures 1 to 9 , which is the third embodiment of the present invention, is based on the previous embodiment, except that after rotating the knob 302b, the transmission gear 307 can be rotated, and driven by the movable rod 301a, the plug 200 can be tightened, or pulled out to loosen.

[0042] Specifically, a rotating shaft 302b - 1 is disposed on the outer wall of the rotating knob 302b , a connecting rod 306 is disposed on the outer wall of the rotating shaft 302b - 1 , a rotating column 306a is disposed at one end of the connecting rod 306 , and a transmission gear 307 is disposed on the outer wall of the rotating column 306a .

[0043] Preferably, an inner gear 303 c is disposed on the outer wall of the fixing plate 303 , and the inner gear 303 c cooperates with the transmission gear 307 .

[0044] The rotating column 306a will not affect the rotation of the transmission gear 307; by rotating the knob 302b, the rotating shaft 302b-1 rotates, thereby driving the connecting rod 306, so that the transmission gear 307 rotates around the internal gear 303c, and the transmission gear 307 and the internal gear 303c are movably matched, thereby realizing the rotation of the transmission gear 307 itself.

[0045] Preferably, a connecting shaft 307a is provided on the outer wall of the transmission gear 307, a connecting rod 307a-1 is provided on the outer wall of the connecting shaft 307a, and a matching column 307a-11 is provided at one end of the connecting rod 307a-1.

[0046] Preferably, a movable rod 301a is provided on the outer wall of the matching column 307a-11, and the movable rod 301a is fixedly connected to the operating clamp 301. A groove 303d is provided on the fixing plate 303, and a slider 308 is provided in the groove 303d. The slider 308 is provided with a matching groove 308a.

[0047] Preferably, the matching groove 308a is movably matched with the movable rod 301a, and the outer wall of the second accommodating cavity 302d is provided with a through groove 302d-1, and the through groove 302d-1 is movably matched with the movable rod 301a.

[0048] The connecting shaft 307a is located at the center of the transmission gear 307; under the setting of the connecting rod 307a-1, the matching column 307a-11 is eccentrically connected to the transmission gear 307; Fig. 9 As shown, the slider 308 can move in the groove 303d, realizing the vertical movement of the movable rod 301a; and the movable rod 301a can move horizontally under the setting of the matching groove 308a; the operating clamp 301 can be set to a rubber material, which can protect the plug 200 from damage to a certain extent and can tolerate elastic deformation errors; when the transmission gear 307 itself rotates, the matching column 307a-11 eccentrically connected to it will rotate around the connecting shaft 307a. At this time, driven by the matching column 307a-11, the movable rod 301a tends to move obliquely downward, as shown in FIG. Fig. 9 As indicated by the arrow, when it moves to a certain position, the movable rod 301a brings the operating clamp 301 to fix the plug 200, so that the plug 200 will not be easily pulled out during inspection; and when it is necessary to pull out the plug 200, in order to prevent the staff from directly pulling out the plug 200, through the setting of the control component 300, the staff can be forced to turn the knob 302b to pull out the plug 200 more stably. At this time, the transmission gear 307 itself continues to rotate, so that the matching column 307a-11 rotates, and the transmission gear 307 rotates around the inner gear 303c, so that the movable rod 301a is adjusted accordingly, thereby driving the operating clamp 301 to pull up the plug 200 fastened thereto, and then the operating clamp 301 moves in an oblique downward direction away from the plug 200 to loosen the plug 200, so that the staff can easily take out the plug 200 at this time, which ensures the safety of the equipment to a certain extent.

[0049] In summary, by turning the knob 302b, the transmission gear 307 and the internal gear 303c are movably matched, so that the transmission gear 307 rotates around the internal gear 303c itself, and the matching column 307a-11 drives the movable rod 301a. When it moves to a certain position, the operating clamp 301 can tighten the plugged plug 200, and continuing to turn the knob 302b can allow the operating clamp 301 to pull up the plug 200 and release it, so that the staff can directly take out the plug 200 to avoid damage to the connection between the devices due to a sudden pull.

[0050] 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, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, 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 of performing the function described herein, 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 numerous modifications still falling within the scope of the appended claims.

[0051] 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.

[0052] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0053] 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 voltage test terminal for an electric energy meter, Features: include, A terminal block body (100) comprises a socket (101a) and an insulating sleeve (101b) arranged on the periphery of the socket (101a); and, a plug (200); and, A control assembly (300) comprises an operating clamp (301) movably matched with the plug (200), a shell (302) arranged on the terminal block body (100), a first accommodating cavity (302c) and a second accommodating cavity (302d) respectively arranged in the shell (302), and a knob (302b) arranged outside the shell (302).

2. The electric energy meter voltage test terminal according to claim 1, Features: A connecting plate (302a) is provided below the shell (302), and a fixing plate (303) is provided on the inner wall of the shell (302).

3. The voltage test terminal of the electric energy meter as claimed in claim 2, Features: A circular disc (304) is provided in the housing (302), an annular groove (304a) is formed between the circular disc (304) and the housing (302), and a fixing column (303b) is provided between the circular disc (304) and the fixing plate (303).

4. The voltage test terminal of the electric energy meter as claimed in claim 3, Features: The fixing plate (303) is provided with a positioning cavity (303a), the outer wall of the rotating knob (302b) is penetrated by a through slot (302b-2), a movable column (305) is movably provided in the through slot (302b-2), and a pull ring (305a) is provided at one end of the movable column (305).

5. The electric energy meter voltage test terminal as claimed in claim 4, Features: The movable column (305) is movably matched with the annular groove (304a), an elastic member (305b) is provided at the other end of the movable column (305), a ball seat (305b-1) is provided on one side of the elastic member (305b), a rolling ball (305b-11) is provided in the ball seat (305b-1), and the rolling ball (305b-11) is movably matched with the positioning cavity (303a).

6. The voltage test terminal of the electric energy meter as claimed in claim 5, Features: The outer wall of the rotating knob (302b) is provided with a rotating shaft (302b-1), the outer wall of the rotating shaft (302b-1) is provided with a connecting rod (306), one end of the connecting rod (306) is provided with a rotating column (306a), and the outer wall of the rotating column (306a) is provided with a transmission gear (307).

7. The voltage test terminal of the electric energy meter as claimed in claim 6, Features: An inner gear (303c) is provided on the outer wall of the fixing plate (303), and the inner gear (303c) cooperates with the transmission gear (307).

8. The electric energy meter voltage test terminal according to claim 7, Features: The outer wall of the transmission gear (307) is provided with a connecting shaft (307a), the outer wall of the connecting shaft (307a) is provided with a connecting rod (307a-1), and one end of the connecting rod (307a-1) is provided with a matching column (307a-11).

9. The electric energy meter voltage test terminal according to claim 8, Features: The outer wall of the matching column (307a-11) is provided with a movable rod (301a), and the movable rod (301a) is fixedly connected to the operating clamp (301). The fixed plate (303) is provided with a groove (303d), and a slider (308) is provided in the groove (303d). The slider (308) is provided with a matching groove (308a).

10. The electric energy meter voltage test terminal according to claim 9, Features: The matching groove (308a) is movably matched with the movable rod (301a); the outer wall of the second accommodating cavity (302d) is provided with a through groove (302d-1), and the through groove (302d-1) is movably matched with the movable rod (301a).

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