A connection structure between a low-voltage metering box and a conductive connector in an electricity meter.

Abstract

This invention relates to a connection structure between a low-voltage metering box and conductive connectors in an electricity meter, belonging to the field of electricity meter technology. The connection structure includes: a low-voltage metering box with multiple parallel sockets at its terminals; a meter base for mounting the low-voltage metering box, with a cylindrical conductive connector corresponding to each socket on the meter base; internal threads on the inner wall of each socket, and correspondingly, external threads on the first end of each conductive connector; a control element on the meter base, allowing each conductive connector to move axially relative to its corresponding socket and rotate circumferentially relative to the inner wall of its corresponding socket under the control element, thereby enabling the first end of each conductive connector to be threaded into or released from its corresponding socket. This invention achieves stable contact between the conductive connectors and the low-voltage metering box and facilitates connection and disconnection between the conductive connectors and the low-voltage metering box.

Description

Technical Field

[0001] This invention belongs to the field of electricity meter technology, specifically relating to a connection structure between a low-voltage metering box and a conductive connector in an electricity meter. Background Technology

[0002] The existing plug-in structure of the low-voltage metering box and conductive plug of the electricity meter is disclosed in Chinese Utility Model Patent Application No. 202320169290.7 and Authorization Announcement No. CN219475700U, which is a flame-retardant electricity meter plug. It includes a main body component, a support base is provided at the front middle of the main body component, and a plug-in mechanism is distributed at the upper end of the support base. A convenient protective mechanism is provided at the front end of the support base. The support base includes a base body, and a slot is distributed at the upper end of the base body. A limit frame is fixed inside the base body. The plug-in mechanism includes a plug post, and a connecting frame is connected to the lower end of the plug post. A bolt is provided on the lower middle surface of the connecting frame, and an arc-shaped abutment is matched in front of the connecting frame. A slot frame is fixed at the front middle of the arc-shaped abutment, and a screw is engaged inside the slot frame.

[0003] The existing conductive connectors with plug-in structure are mated with the sockets of the low-voltage metering box wiring terminals to achieve conductive connection, but the mating stability needs to be improved to ensure a stable electrical connection. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a connection structure between the low-voltage metering box and the conductive connector of an electricity meter, in order to achieve stable contact between the conductive connector and the low-voltage metering box, and to facilitate the connection and disconnection of the conductive connector and the low-voltage metering box.

[0005] The technical solution adopted by this invention to solve the above-mentioned technical problem is: a plug-in structure for a low-voltage metering box and a conductive connector in an electricity meter, comprising: The low-pressure metering box has multiple sockets arranged side by side at its wiring terminals; Meter stand, used to install the low-pressure metering box, and each socket on the meter stand is provided with a cylindrical conductive connector; Its features are: Each socket has an internal thread on its inner wall, and correspondingly, each conductive connector has an external thread at its first end. The base is equipped with a control component. Under the action of the control component, each conductive plug can move axially relative to its corresponding socket and rotate circumferentially relative to the inner wall of its corresponding socket. This allows the first end of each conductive plug to be threaded into its corresponding socket or to be disconnected from its corresponding socket.

[0006] This invention provides an internal thread on the inner wall of the socket and an external thread on the first end of the conductive connector, allowing the first end of the conductive connector to be threadedly connected to the socket. The threaded connection surface ensures stable contact between the conductive connector and the socket, thereby guaranteeing a stable electrical connection. Simultaneously, this invention includes a control mechanism on the base that enables axial movement and circumferential rotation of the conductive connector. This control mechanism allows the first end of the conductive connector to be threadedly connected to or disconnected from the socket, facilitating the connection and disconnection of the conductive connector from the low-pressure metering box.

[0007] The control mechanism of the present invention needs to simultaneously control the circumferential rotation and axial movement of the conductive plug. The circumferential rotation and axial movement have different dimensional directions, making the control difficult. Therefore, preferably, the base is provided with an axially extending first mounting channel at the position of each conductive plug, so that the second end of the corresponding conductive plug can be inserted. Each of the first installation channels has a limiting protrusion and a limiting groove that extends spirally along the axial direction on its inner wall surface and the outer peripheral surface of the corresponding conductive connector. The limiting protrusion is inserted into the corresponding limiting groove so that the axially moving conductive connector can rotate circumferentially at the same time. The control element is used to provide a force that can drive the conductive connector to move axially.

[0008] The control component can simultaneously drive the circumferential rotation and axial movement of the conductive connector by providing axial moving force, which facilitates control.

[0009] Preferably, the axial direction is defined as the left-right direction, the holes are arranged along the front-back direction, and the conductive connectors are arranged along the front-back direction. The control component includes: Multiple first elastic elements, each of which acts on its corresponding conductive plug, so that the corresponding conductive plug always tends to move away from the axial direction of the plug hole. The control body has multiple output ends that can move up and down. Each output end corresponds to the second end of its respective conductive plug. When the output end of the control body moves downward, the force exerted by the output end of the control body on the second end of the conductive plug can drive the conductive plug to overcome the elastic force of the first elastic element and move axially closer to the socket. When the output end of the control body moves upward, the conductive plug is reset under the action of the first elastic element.

[0010] Due to limited installation space in the low-voltage metering box of the electricity meter, this invention designs the control component as a structure with multiple first elastic elements and a control body to enable axial movement of each conductive connector within this limited space. Each output end of the control body can move vertically to engage with the second end of the conductive connector, thereby driving the conductive connector to move axially without affecting its circumferential rotation. Furthermore, the vertical movement direction of each output end of the control body is perpendicular to the axial direction, thus avoiding additional axial space occupation and making efficient use of space perpendicular to the axial direction, thereby improving the overall structural compactness.

[0011] Preferably, the control body includes a control handle and multiple vertically extending movable rods. Each movable rod is movably positioned on the base above each corresponding conductive connector. The lower end of each movable rod is the output end of the control body. The control handle acts on the upper end of each movable rod to enable each movable rod to move up and down synchronously.

[0012] The combination of the control handle and multiple moving rods can drive each conductive connector to move synchronously to the state of threaded connection with the socket or to the state of disengagement from the threaded connection, thereby further facilitating the connection and disconnection of the conductive connector with the low-pressure metering box.

[0013] To further facilitate operation, preferably, the first end of the control handle is mounted on the base in a manner that allows it to rotate up and down along a first axis extending in the front-back direction, and the second end of the control handle is a free end; the control body also includes a component that can convert the rotational force of the control handle into synchronous movement of each moving rod. That is, the present invention allows for the synchronous movement and circumferential rotation of each conductive connector simply by rotating the control handle, facilitating operation.

[0014] Preferably, each movable rod is equipped with a second elastic element so that each movable rod always has an upward tendency to move; The first end of the control handle extends in the front-back direction and is located above each of the moving rods arranged in the front-back direction. The position of the first end of the control handle corresponding to the upper end of each moving rod is a cam around the first axis. Each cam cooperates with the upper end of the corresponding moving rod and can push the moving rod downward when the convex surface of the cam rotates to the upper end of the moving rod.

[0015] Furthermore, when the convex surface of the cam is located at the upper end of the moving rod, the base is provided with a constraint member for restricting the rotation of the second end of the control handle. When the constraint member acts on the control handle, it ensures that the control handle can be stably positioned with the convex surface of its cam located at the upper end of the moving rod, preventing the control handle from rotating accidentally.

[0016] Preferably, the base is provided with a second mounting channel extending vertically at the position corresponding to each of the first mounting channels. The second mounting channel is connected to the first mounting channel, and each moving rod is respectively located in its corresponding second mounting channel.

[0017] Preferably, the output end of the control body has an inverted conical surface with a large upper diameter and a small lower diameter; correspondingly, the second end of the conductive connector has a circumferentially extending conical surface.

[0018] In the above-mentioned solutions, preferably, the inner wall of the socket extends axially and has a first annular segment with internal threads and a second annular segment with a smooth wall surface in the extending direction. The first end of the conductive connector is threadedly connected to the first annular segment after passing through the second annular segment. This invention, by providing internal threads on the first annular segment of the inner wall of the socket and a smooth segment without internal threads on the second annular segment, ensures stable contact and facilitates the screwing of the conductive connector into the socket. Specifically, the second annular segment of each socket is first fitted onto the outer circumference of the first end of its corresponding conductive connector, achieving axial alignment between each conductive connector and its corresponding socket. Then, the axial movement and circumferential rotation of each conductive connector can be smoothly driven by the control mechanism, avoiding the problem of jamming due to misalignment of the conductive connector with its corresponding socket during operation.

[0019] Compared with the prior art, the advantages of the present invention are as follows: The present invention provides an internal thread on the inner wall of the socket and an external thread on the first end of the conductive connector, enabling the first end of the conductive connector to be threadedly connected to the socket. The threaded connection surface ensures stable contact between the conductive connector and the socket, thereby guaranteeing a stable electrical connection. Simultaneously, the present invention provides a control component on the base that can drive the conductive connector to move axially and rotate circumferentially. This control component allows the first end of the conductive connector to be threadedly connected to or disconnected from the socket, facilitating the connection and disconnection of the conductive connector from the low-pressure metering box. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection structure in an embodiment of the present invention (the first end of each conductive connector is threaded into its corresponding socket). Figure 2 for Figure 1 A cross-sectional view of the connecting structure in the middle; Figure 3 This is a schematic diagram of the connection structure in an embodiment of the present invention (the first end of each conductive connector is disconnected from its corresponding socket). Figure 4 for Figure 3 A cross-sectional view of the connecting structure in the middle; Figure 5 This is a schematic diagram of the structure of the conductive connector according to an embodiment of the present invention; Figure 6 This is a cross-sectional view of the connection structure according to an embodiment of the present invention. Detailed Implementation

[0021] like Figures 1-6 As shown, this is a preferred embodiment of the plug-in structure of a low-voltage metering box and a conductive connector of an electricity meter according to the present invention. The plug-in structure includes a low-voltage metering box 1, a meter base 2, a conductive connector 3, a control component, and a constraint component 5.

[0022] The low-pressure metering box 1 has multiple sockets 10 arranged side by side at its wiring terminals (four sockets 10 in this embodiment). The arrangement direction of each socket 10 is defined as the front-to-back direction, and the extension direction of each socket 10 is defined as the left-to-right direction. Each socket 10 has an internal thread 11 on its inner wall.

[0023] The meter holder 2 is used to install the low-pressure metering box 1, and each corresponding socket 10 on the meter holder 2 is provided with a columnar conductive connector 3. That is, the number of conductive connectors 3 is the same as the number of sockets 10. Each conductive connector 3 is arranged in the front-to-back direction and extends in the left-to-right direction (the axial direction of the conductive connector is the left-to-right direction). Each conductive connector 3 has a first end 31 and a second end 32 in the extending direction. The first end 31 of each conductive connector 3 is provided with an external thread 311. Under the action of the control member, each conductive connector 3 can move axially relative to its corresponding socket 10 and can also rotate circumferentially relative to the inner wall of its corresponding socket 10, so that the first end 31 of each conductive connector 3 can be threaded into its corresponding socket 10 or disconnected from its corresponding socket 10. In this embodiment, the inner wall of the socket 10 extends axially and has a first annular segment 1a with the aforementioned internal thread 11 and a second annular segment 1b with a smooth wall surface in the extending direction. The first end 31 of the conductive plug 3 is threadedly connected to the first annular segment 1a after passing through the second annular segment 1b.

[0024] The base 2 is provided with a first mounting channel 21 extending axially (i.e., in the left-right direction) at the position of each conductive plug 3, for the second end 32 of the corresponding conductive plug 3 to be inserted. The inner wall surface of each first mounting channel 21 and the outer peripheral surface of the corresponding conductive plug 3 are respectively provided with a limiting protrusion 23 and a limiting groove 33 extending spirally in the axial direction. In this embodiment, the inner wall surface of each first mounting channel 21 is provided with a limiting protrusion 23, and correspondingly, the outer peripheral surface of each conductive plug 3 is provided with a limiting groove 33 extending spirally in the axial direction. The limiting protrusion 23 is inserted into the corresponding limiting groove 33 so that the axially moving conductive plug 3 can rotate circumferentially at the same time. (Of course, the limiting groove 33 extending spirally in the axial direction can also be provided on the inner wall surface of the first mounting channel 21, and correspondingly, the outer peripheral surface of the conductive plug 3 is provided with a limiting protrusion 23, and the limiting protrusion 23 is inserted into the corresponding limiting groove 33 so that the axially moving conductive plug 3 can rotate circumferentially at the same time.) Meanwhile, the base 2 is provided with a second mounting channel 22 extending vertically at the position corresponding to each first mounting channel 21. The second mounting channel 22 intersects perpendicularly with the corresponding first mounting channel 21 and is connected at the intersection.

[0025] The control element provides a force that drives the conductive connectors 3 to move synchronously axially. The control element includes multiple first elastic elements 41 and a control body.

[0026] like Figure 2 , Figure 4 As shown, the number of first elastic elements 41 is the same as the number of conductive plugs 3. Each first elastic element 41 acts on its corresponding conductive plug 3 so that the corresponding conductive plug 3 always tends to move axially away from the socket 10. In this embodiment, the first elastic element 41 is an axially extending spring sleeved on the outer periphery of the corresponding conductive plug.

[0027] The control body has multiple output ends that can move up and down. Each output end corresponds to the second end 32 of its respective conductive connector 3. When the output end of the control body moves downward, the force exerted by the output end of the control body on the second end 32 of the conductive connector 3 drives the conductive connector 3 to overcome the elastic force of the first elastic member 41 and move axially closer to the socket 10. The axially moving conductive connector 3 can rotate circumferentially simultaneously under the action of the cooperating limiting groove 33 and limiting protrusion 23, thereby allowing the first end of the conductive connector 3 to be threaded into the socket 10. Figure 2 As shown. When the output end of the control body moves upward, the conductive connector 3 resets under the action of the first elastic member 41, that is, the first end of the conductive connector 3 is disconnected from the socket 10 by the thread, as shown. Figure 4 As shown.

[0028] Specifically, the control body includes a control handle 43 and multiple vertically extending movable rods 44. The number of movable rods 44 is the same as the number of conductive connectors 3. Each movable rod 44 is vertically movable and positioned on the base 2 above the corresponding conductive connector 3. In this embodiment, each movable rod 44 is vertically movable and inserted into its corresponding second mounting channel 22 and positioned above the corresponding conductive connector 3. The lower end of each movable rod 44 is the output end of the control body. The control handle 43 acts on the upper end of each movable rod 44 to enable each movable rod 44 to move vertically synchronously. In this embodiment, as shown... Figure 2 , Figure 4 As shown, the moving rod 44 is a screw with its tip pointing downwards. The lower end of the moving rod 44 (i.e., the output end of the control body) has an inverted conical surface 45 with a large upper diameter and a small lower diameter. Correspondingly, the second end 32 of each conductive connector 3 has a circumferentially extending conical surface 34. The cooperation between the conical surface 34 and the inverted conical surface 45 allows the lower end of the moving rod 44 to move downwards and drive the conductive connector 3 to move axially without affecting the circumferential rotation of the conductive connector 3. Each movable lever 44 is acted upon by a second elastic element 42 (the second elastic element 42 is a spring extending vertically and sleeved on the outer periphery of the movable lever 44) to ensure that each movable lever 44 always has an upward tendency to move. The first end of the control handle 43 extends in the front-back direction and is mounted on the base 2 in a manner that allows it to rotate vertically along a first axis 430 extending in the front-back direction. It is located above each movable lever 44 arranged in the front-back direction. The position of the first end of the control handle 43 corresponding to the upper end of each movable lever 44 is a cam 431 around the first axis. Each cam 431 cooperates with the upper end of the corresponding movable lever 44 and can overcome the elastic force of the second elastic element 42 to push the movable lever 44 downward when the convex surface 432 of the cam 431 rotates to the upper end of the movable lever 44. For details, please refer to [link to relevant documentation]. Figure 2 After the convex surface 432 of the cam 431 disengages from the upper end of the moving rod 44, the moving rod 44 moves upward and resets under the action of the second elastic element 42. See details... Figure 4 That is, the cam 431 and the second elastic element 42 are components that can convert the rotational force of the control handle 43 into the synchronous movement of each moving rod 44. The second end of the control handle 43 is a free end. When the convex surface 432 of the cam 431 is located at the upper end of the moving rod 44, the base 2 is provided with a constraint member 5 for constraining the rotation of the second end of the control handle 43. In this embodiment, the constraint member 5 is a cover that can be flipped up and down on the base. When the convex surface 432 of the cam 431 is located at the upper end of the moving rod 44, the control handle 43 is basically horizontally arranged, and the free end of the control handle 43 extends toward the direction of the low-pressure metering box. The cover is placed above the free end of the control handle 43 to prevent the free end of the control handle 43 from rotating upward. When it is necessary to rotate the control handle 43 upward, the cover is first flipped upward, and then the control handle 43 is rotated upward.

[0029] During installation, first install the low-pressure metering box 1 onto the meter base 2. Insert the first end 31 of the conductive connector 3 on the meter base 2 into the corresponding socket 10 of the low-pressure metering box 1. Then, rotate the control handle 43 downwards. The control handle 43 drives each moving rod 44 to move downwards synchronously, thereby driving each conductive connector 3 to move axially and rotate circumferentially synchronously towards the socket 10, so that the first end 31 of each conductive connector 3 can be synchronously threaded into the corresponding socket 10. This facilitates operation, and the threaded connection between the conductive connector 3 and the socket 10 ensures stable contact between the conductive connector and the low-pressure metering box.

[0030] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A connection structure between a low-voltage metering box and a conductive connector in an electricity meter, comprising: The low-pressure metering box (1) has multiple sockets (10) arranged side by side at its wiring terminals; Meter base (2) is used to install the low-pressure metering box (1), and each socket (10) on the meter base (2) is provided with a columnar conductive connector (3); Its features are: Each socket (10) has an internal thread (11) on its inner wall, and correspondingly, each conductive connector (3) has an external thread (311) on its first end (31). The base (2) is provided with a control component. Under the action of the control component, each conductive plug (3) can move axially relative to its corresponding socket (10) and rotate circumferentially relative to the inner wall of its corresponding socket (10), thereby enabling the first end (31) of each conductive plug (3) to be threadedly connected to its corresponding socket (10) or to be disconnected from its corresponding socket (10).

2. The plug-in structure according to claim 1, characterized in that: The base (2) is provided with an axially extending first mounting channel (21) at the position of each conductive plug (3) so that the second end (32) of the corresponding conductive plug (3) can be inserted. Each of the first installation channels (21) has a limiting protrusion (23) and a limiting groove (33) extending spirally along the axial direction on the inner wall surface and the outer peripheral surface of the corresponding conductive plug (3). The limiting protrusion (23) is inserted into the corresponding limiting groove (33) so that the axially moving conductive plug (3) can rotate circumferentially at the same time. The control element is used to provide a force that can drive the conductive connector (3) to move axially.

3. The plug-in structure according to claim 2, characterized in that: The axial direction is defined as the left-right direction, and each socket (10) is arranged in the front-back direction, and each conductive connector (3) is arranged in the front-back direction; The control component includes: Multiple first elastic elements (41) act on their respective corresponding conductive plugs (3) so that the corresponding conductive plugs (3) always have a tendency to move axially away from the plug hole (10). The control body has multiple output ends that can move up and down. Each output end corresponds to the second end (32) of its respective conductive plug (3). When the output end of the control body moves downward, the force exerted by the output end of the control body on the second end (32) of the conductive plug (3) can drive the conductive plug (3) to overcome the elastic force of the first elastic member (41) and move axially closer to the socket (10). When the output end of the control body moves upward, the conductive plug (3) is reset under the action of the first elastic member (41).

4. The plug-in structure according to claim 3, characterized in that: The control body includes a control handle (43) and multiple vertically extending movable rods (44). Each movable rod (44) is movably positioned on the base (2) above each conductive connector (3). The lower end of each movable rod (44) is the output end of the control body. The control handle (43) acts on the upper end of each movable rod (44) so ​​that each movable rod (44) can move up and down synchronously.

5. The plug-in structure according to claim 4, characterized in that: The first end of the control handle (43) is mounted on the base (2) in a manner that allows it to rotate up and down along a first axis (430) extending in the front-back direction, and the second end of the control handle (43) is a free end; the control body also includes a component that can convert the rotational force of the control handle (43) into the synchronous movement of each moving rod (44).

6. The plug-in structure according to claim 5, characterized in that: Each movable rod (44) is acted upon by a second elastic element (42) so that each movable rod (44) always has an upward tendency; The first end of the control handle (43) extends in the front-back direction and is located above each of the moving rods (44) arranged in the front-back direction. The position of the first end of the control handle (43) corresponding to the upper end of each moving rod (44) is a cam (431) around the first axis. Each cam (431) cooperates with the upper end of the corresponding moving rod (44) and can push the moving rod (44) downward when the convex surface (432) of the cam (431) rotates to the upper end of the moving rod (44).

7. The plug-in structure according to claim 6, characterized in that: When the convex surface (432) of the cam (431) is located at the upper end of the moving rod (44), the base (2) is provided with a constraint member (5) for constraining the rotation of the second end of the control handle (43).

8. The plug-in structure according to claim 4, characterized in that: The base (2) is provided with a second mounting channel (22) extending vertically at the position corresponding to each first mounting channel (21). The second mounting channel (22) is connected to the first mounting channel (21), and each moving rod (44) is respectively located in its corresponding second mounting channel (22).

9. The plug-in structure according to claim 3, characterized in that: The output end of the control body has an inverted conical surface (45) with a large upper diameter and a small lower diameter; correspondingly, the second end (32) of the conductive connector (3) has a circumferentially extending conical surface (34).

10. The plug-in structure according to any one of claims 1 to 9, characterized in that: The inner wall of the socket (10) extends axially and has a first annular segment (1a) with the aforementioned internal thread (11) and a second annular segment (1b) with a smooth wall in the extending direction. The first end (31) of the conductive plug (3) is threadedly connected to the first annular segment (1a) after passing through the second annular segment (1b).

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