A leakage-proof wiring device for electric power meter box

Abstract

The present invention discloses an anti-leakage wiring connector for an electric meter box, and relates to the technical field of anti-leakage wiring connectors, including a body, a fixed electrode fixedly connected to the body, and an intermediate body, which includes a movable electrode movably arranged relative to the body, and the movable electrode has a connection position in which it is in contact and electrically connected with the fixed electrode during the movement of the movable electrode relative to the body; a first elastic member, which drives the movable electrode out of the connection position during the process of restoring its deformation; a terminal, which is electrically connected to an external wire, and is electrically connected to the movable electrode during the process of plugging and matching the terminal with the intermediate body, and drives the movable electrode to move to the connection position. In the above technical scheme, when the terminal is not plugged and matched with the intermediate body, even if the electric power construction personnel accidentally touch the intermediate body, no electric shock accident will occur; when the terminal is plugged and matched with the intermediate body so that the movable electrode is in the connection position, the electric power construction personnel will not be electrocuted; and during the entire wiring construction process, there is a high level of safety.

Description

Technical Field

[0001] The invention relates to the technical field of leakage-proof connectors, in particular to a leakage-proof connector for an electric power metering box. Background Art

[0002] The power meter box connector is a component used in electric energy metering devices. Its function is to combine devices such as electric energy meters, voltage transformers and current transformers through electrical connections to achieve accurate measurement of electric energy. The connector usually includes a junction box, terminal blocks, connecting wires and other parts, which constitute the secondary circuit of the electric energy metering device.

[0003] The patent with the announcement number CN112366462A discloses a patent named "An anti-leakage terminal block for an electric meter box", which includes a bottom box, a terminal block is arranged in the bottom box, a plurality of terminal slots are opened on the terminal block, a terminal disc is arranged in each of the terminal slots, a T-shaped slide groove is opened on the circumference of the terminal disc, and a clamping head is arranged at one end of the terminal disc; a clamping tooth is arranged on one side of the clamping head, a gear disc is arranged in the terminal disc, a threaded groove is arranged on one side of the gear disc, a bevel gear is arranged on the gear disc, and an adjustment knob is connected to the bevel gear through a connecting rod; a fixing block is arranged on the terminal block, a connecting sleeve is sleeved on the pin shaft; a waterproof cover is connected; a positioning hole is opened on one side of the waterproof cover plate: a fixing pin is penetrated on the fixing block, and a pressing sheet is sleeved on the fixing pin; when in use, the plug block is clamped by moving three groups of clamping heads, which is convenient to use and does not require carrying tools; the plug block can be shielded by the waterproof cover plate to prevent rainwater from dripping onto the terminal block to cause a short circuit, thereby improving safety.

[0004] The technology in the above-mentioned patent can shield the plug-in block through a waterproof cover to prevent rain from dripping onto the terminal block and causing a short circuit, thereby improving safety. However, the disadvantage is that when fixing the external wire, it is necessary to turn the adjustment knob, which is more troublesome to operate. In addition, in the prior art, the live electrodes in the connector are directly exposed inside the connector body. When power construction workers are performing maintenance work, they are prone to accidentally touch the live electrodes inside the connector body, causing electric shock accidents, and the safety is not high. Summary of the invention

[0005] The object of the present invention is to provide a leakage-proof connector for an electric power meter box to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-leakage connector for an electric power meter box, comprising a body, a fixed electrode fixedly connected to the body, and an intermediate body, which comprises a movable electrode movably arranged relative to the body, and the movable electrode has a connection position in which it is in contact and electrically connected with the fixed electrode during its movement relative to the body; a first elastic member, which is arranged between the body and the movable electrode, and the process of restoring its deformation drives the movable electrode to separate from the connection position; a terminal, which is electrically connected to an external wire, and is electrically connected to the movable electrode during the process of plugging and matching the terminal with the intermediate body, and drives the movable electrode to move to the connection position.

[0007] Furthermore, the first elastic member is a U-shaped spring sheet, one end of which is fixedly arranged on the device body, and the other end of which is fixedly sleeved with the movable electrode.

[0008] Furthermore, the intermediate body comprises: a second sleeve, which is fixedly arranged on the body, and a plurality of first abutment groove groups are arranged in a circumferential array on the second sleeve, each of which comprises an oblique groove opening, a deep groove opening, and a wedge-shaped block arranged between the oblique groove opening and the deep groove opening at intervals; a connecting post, one end of which is fixedly connected to the movable electrode; a first sleeve, one end of which is slidably sleeved on the connecting post, and the other end of which is movably sleeved on the second sleeve, and a plurality of wedge-shaped abutment blocks corresponding to each first abutment groove group are fixedly arranged in a circumferential array on the first sleeve; a second elastic member, which drives the movable electrode to move in the process of restoring its deformation Slide away from the first sleeve; the terminal can be slidably plugged into the second sleeve, and one end of the terminal is provided with a plurality of second abutment groove groups corresponding to each wedge-shaped abutment block in a circular array, each second abutment groove group includes a first V-notch and a second V-notch connected, and a pointed cone is formed between the first V-notch and the second V-notch; during the process of inserting the terminal into the second sleeve, each wedge-shaped abutment block can abut and cooperate with the corresponding second abutment groove group, so that the first sleeve slides and rotates, so that the wedge-shaped abutment block enters the adjacent oblique notch from the deep notch, thereby moving the movable electrode to the connection position.

[0009] Furthermore, a second elastic member is provided between the connecting column and the first sleeve, and the process of the second elastic member restoring its deformation drives the first sleeve to move relative to the second sleeve along the axial direction away from the fixed electrode.

[0010] Furthermore, a plurality of guide grooves are provided in a circumferential array in the second sleeve, and a plurality of guide blocks corresponding to each guide groove are fixedly provided in a circumferential array on the terminal post, and each guide block can be slidably matched with the corresponding guide groove.

[0011] Furthermore, a plurality of limit rods are fixedly provided on the first sleeve in a circumferential array, and a limit block is respectively provided at the end of each limit rod. A plurality of plug blocks corresponding to each limit block are fixedly provided on the terminal in a circumferential array, and when the movable electrode is in the connecting position, the limit block on each limit rod can be engaged with the corresponding plug block.

[0012] In the above technical scheme, the present invention provides an anti-leakage connector for an electric meter box. When the terminal post is not plugged into the intermediate body, the movable electrode is separated from the connecting position and the intermediate body is not conductive. At this time, even if the electric construction personnel accidentally touch the intermediate body, no electric shock accident will occur. When the terminal post is plugged into the intermediate body so that the movable electrode is in the connecting position, the movable electrode is electrically connected, so that the intermediate body is electrically connected, and finally the external wire is electrically connected, while the terminal post is not energized and will not cause electric shock to the electric construction personnel. In the entire wiring construction process, electric shock accidents can be effectively prevented with high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0015] Figure 2 A schematic diagram of the internal structure provided by an embodiment of the present invention;

[0016] Figure 3 Schematic diagram of the plug-in structure provided in the embodiment of the present invention Figure I ;

[0017] Figure 4 Schematic diagram of the plug-in structure provided in the embodiment of the present invention Figure II ;

[0018] Figure 5 An exploded schematic diagram of the internal structure of a device provided by an embodiment of the present invention;

[0019] Figure 6 A schematic diagram of the first sleeve structure provided in an embodiment of the present invention;

[0020] Figure 7 A schematic diagram of the structure of a second sleeve provided in an embodiment of the present invention;

[0021] Figure 8 A schematic diagram of the terminal structure provided in an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Device body; 2. Fixed electrode; 3. Movable electrode; 4. First elastic member; 5. Second elastic member; 6. Connecting column; 21. First sleeve; 22. Wedge-shaped abutment block; 23. Limit rod; 24. Limit block; 31. Second sleeve; 32. Oblique notch; 33. Deep notch; 34. Wedge block; 35. Guide groove; 41. Terminal; 42. First V-notch; 43. Second V-notch; 44. Cone; 45. Guide block; 46. Insert block. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] See also Figure 1-8 An embodiment of the present invention provides an anti-leakage wiring connector for an electric meter box, comprising a body 1, a fixed electrode 2 fixedly connected to the body 1, an intermediate body, a first elastic member 4 and a terminal 41. The intermediate body comprises a movable electrode 3 movably arranged relative to the body 1, and the movable electrode 3 has a connection position in which it is in contact and electrically connected with the fixed electrode 2 during the movement of the movable electrode 3 relative to the body 1; the first elastic member 4 is arranged between the body and the movable electrode 3, and the first elastic member 4 drives the movable electrode 3 out of the connection position during the process of restoring the deformation; the terminal 41 is electrically connected to an external wire, and is electrically connected to the movable electrode 3 during the process of plugging and matching the terminal 41 with the intermediate body, and drives the movable electrode 3 to move to the connection position. The first elastic member 4 comprises a U-shaped spring sheet, one end of which is fixedly arranged on the body 1, and the other end of which is sleeved with the movable electrode 3.

[0026] The intermediate body includes: a first sleeve 21, a second sleeve 31, a connecting column 6, a plurality of wedge-shaped abutting blocks 22, a plurality of first abutting groove groups and a plurality of second abutting groove groups. The second sleeve 31 is an insulating member, and the end of the second sleeve 31 away from the fixed electrode 2 is fixedly arranged on the body 1, and the end of the second sleeve 31 close to the fixed electrode 2 is provided with a plurality of first abutting groove groups in a circumferential array, each first abutting groove group includes an oblique notch 32, a deep notch 33 and a wedge-shaped block 34 arranged between the oblique notch 32 and the deep notch 33; the end of the connecting column 6 close to the fixed electrode 2 is fixedly connected to the movable electrode 3, and the connecting column 6 is a conductor.

[0027] The first sleeve 21 is a conductor. The end of the first sleeve 21 close to the fixed electrode 2 is slidably sleeved on the connecting column 6. The first sleeve 21 can rotate relative to the connecting column 6 along the circumferential side and slide relative to the connecting column 6 along the axial direction. The end of the first sleeve 21 away from the fixed electrode 2 is movably sleeved on the second sleeve 31, that is, the first sleeve 21 can rotate relative to the second sleeve 31 along the circumferential side and slide relative to the second sleeve 31 along the axial direction. A plurality of wedge-shaped abutment blocks 22 corresponding to each first abutment groove group are fixedly arranged in a circumferential array on the circumferential side surface of the first sleeve 21 close to the fixed electrode 2; the second elastic member 5, the process of restoring its deformation drives the movable electrode 3 to slide away from the first sleeve 21; the second elastic member 5 is movably sleeved between the connecting column 6 and the first sleeve 21, and the second elastic member 5 is a spring.

[0028] See also Figure 8 The terminal 41 is a conductor, and an insulating handle (not shown in the figure) is provided at one end of the terminal 41 away from the fixed electrode 2. A plurality of second abutment groove groups corresponding to each wedge-shaped abutment block 22 are provided in a circular array at one end of the terminal 41 close to the fixed electrode 2. Each second abutment groove group includes a first V-notch 42 and a second V-notch 43 connected to each other, and a sharp cone 44 is formed between the first V-notch 42 and the second V-notch 43. During the insertion of the terminal 41 into the second sleeve 31, each wedge-shaped abutment block 22 can abut and cooperate with the corresponding second abutment groove group, so that the first sleeve 21 slides and rotates, so that the wedge-shaped abutment block 22 enters the adjacent oblique notch 32 from the deep notch 33, thereby moving the movable electrode 3 to the connection position.

[0029] A plurality of guide grooves 35 are provided in a circular array in the second sleeve 31, and a plurality of guide blocks 45 corresponding to each guide groove 35 are fixedly provided in a circular array on the circumferential side surface of the terminal 41 close to the fixed electrode 2. Each guide block 45 can slide in cooperation with the corresponding guide groove 35 so that the terminal 41 can slide relative to the second sleeve 31.

[0030] A plurality of limit rods 23 are fixedly arranged in a circular array on the circumferential side surface of the first sleeve 21 close to the fixed electrode 2, and a limit block 24 is respectively arranged at the end of each limit rod 23. A plurality of plug blocks 46 corresponding to each limit rod 23 are fixedly arranged in a circular array on the circumferential side surface of the terminal 41 away from the fixed electrode 2. When the movable electrode 3 is in the connecting position, the limit block 24 on each limit rod 23 can be engaged with the corresponding plug block 46 to prevent the terminal 41 from being separated from the second sleeve 31.

[0031] Working principle: When the terminal 41 is not inserted into the second sleeve 31 , the connecting column 6 is connected to the first sleeve 21 , and each wedge-shaped abutment block 22 on the first sleeve 21 is received in the deep notch 33 in each first abutment groove group on the corresponding second sleeve 31 . When the terminal 41 is pressed to be inserted into the intermediate body, during this process, the upper guide blocks 45 of the terminal 41 slide and cooperate with the corresponding guide grooves 35 in the second sleeve 31, so that the terminal 41 slides toward the fixed electrode 2 relative to the second sleeve 31; during the sliding stroke of the terminal 41 relative to the second sleeve 31, the pointed cones 44 in the second abutment groove groups on the terminal 41 can abut and cooperate with the corresponding wedge-shaped abutment blocks 22, so that the wedge-shaped abutment blocks 22 slide out from the deep notches 33 in the corresponding first abutment groove groups. At this time, the external wire on the end of the terminal 41 close to the fixed electrode 2 is connected to the first sleeve 21, that is, the external wire is connected to the first sleeve 21, and at the same time, the U-shaped spring sheet is deformed, the movable electrode 3 is electrically connected to the fixed electrode 2, and the movable electrode 3 is in the connection position, and finally the external wire is connected to the fixed electrode 2, and the second elastic member 5 is deformed, and the process of restoring its deformation drives the movable electrode 3 to slide away from the first sleeve 21. When each wedge-shaped abutment block 22 completely slides out from the corresponding deep notch 33 in the first abutment groove group, under the joint action of the second elastic member 5 and the pointed cones 44, each wedge-shaped abutment block 22 slides along the corresponding second V-notch 43 and rotates to the adjacent first V-notch 42, so that the first sleeve 21 slides and rotates axially relative to the second sleeve 31. When the terminal 41 is released, the elastic force of the second elastic member 5 drives the first sleeve 21 and the terminal 41 axially away from the fixed electrode 2. Under the combined action of the elastic force of the second elastic member 5 and the inclined slots 32, each wedge-shaped abutment block 22 slides and rotates along the corresponding inclined slot 32, so that the first sleeve 21 continues to slide and rotate axially relative to the second sleeve 31 until it abuts against the side of the wedge block 34. At this time, the movable electrode 3 is still in the connecting position, and the second elastic member 5 is still in a compressed state. During the travel of the first sleeve 21 sliding and rotating axially relative to the second sleeve 31, the limit blocks 24 on the limit rods 23 also slide and rotate from the sides of the corresponding plug blocks 46 to directly above the corresponding plug blocks 46 to prevent the terminal 41 from detaching from the second sleeve 31.

[0032] The terminal 41 is pressed again to make the terminal 41 slide toward the fixed electrode 2 relative to the second sleeve 31. During the sliding stroke of the terminal 41 relative to the second sleeve 31, the sharp cones 44 in the second abutting groove groups on the terminal 41 can abut and cooperate with the corresponding wedge-shaped abutting blocks 22, so that the wedge-shaped abutting blocks 22 slide out from the oblique notches 32 in the corresponding first abutting groove groups, and the movable electrode 3 is in the connecting position, and the second elastic member 5 continues to compress and increase the deformation. When the wedge-shaped abutting blocks 22 completely slide out from the oblique notches 32 in the corresponding first abutting groove groups, under the joint action of the elastic force of the second elastic member 5 and the sharp cones 44, the wedge-shaped abutting blocks 22 slide along the corresponding first V-notches 42 and rotate to the adjacent first V-notches 42, so that the first sleeve 21 slides and rotates relative to the second sleeve 31 along the axial direction. When the terminal 41 is released again, the elastic force of the second elastic member 5 drives the first sleeve 21 and the terminal 41 axially away from the fixed electrode 2. Under the combined action of the elastic force of the second elastic member 5 and the wedge blocks 34, the wedge-shaped abutment blocks 22 slide and rotate along the corresponding wedge blocks 34, so that the first sleeve 21 continues to slide and rotate axially relative to the second sleeve 31 until the wedge-shaped abutment blocks 22 slide into the corresponding deep grooves 33. At this time, the second elastic member 5 restores its deformation, the movable electrode 3 is separated from the connecting position, the intermediate body is not charged, and the external wire is not conductive. During the axial sliding and rotation of the first sleeve 21 relative to the second sleeve 31, the limit blocks 24 on the limit rods 23 also slide and rotate from directly above the corresponding plug-in blocks 46 to the side of the corresponding plug-in blocks 46, so that the terminal 41 can be separated from the second sleeve 31.

[0033] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An anti-leakage connector for an electric power meter box, comprising a body (1) and a fixed electrode (2) fixedly connected to the body (1), characterized in that: Also includes: The intermediate body comprises a movable electrode (3) movably arranged relative to the body (1), wherein the movable electrode (3) has a connection position in electrical contact with the fixed electrode (2) during the movement of the movable electrode (3) relative to the body (1); A first elastic member (4) is arranged between the device body (1) and the movable electrode (3), and the process of restoring the deformation drives the movable electrode (3) to leave the connection position; A terminal (41) is electrically connected to an external wire, and during the plug-in mating process of the terminal (41) and the intermediate body, the terminal (41) is electrically connected to the movable electrode (3), and drives the movable electrode (3) to move to a connection position; The first elastic member (4) is a U-shaped spring sheet, one end of which is fixedly arranged on the device body (1), and the other end of which is sleeved with the movable electrode (3); The intermediates include: A second sleeve (31) is fixedly mounted on the body (1), and a plurality of first abutment groove groups are formed in a circumferential array on the second sleeve (31), each first abutment groove group comprising an oblique groove opening (32), a deep groove opening (33), and a wedge-shaped block (34) arranged at intervals between the oblique groove opening (32) and the deep groove opening (33); A connecting column (6), one end of which is fixedly connected to the movable electrode (3); A first sleeve (21), one end of which is slidably sleeved on the connecting column (6), and the other end of which is movably sleeved on the second sleeve (31), and a plurality of wedge-shaped abutment blocks (22) corresponding to the first abutment groove groups are fixedly arranged in a circumferential array on the first sleeve (21); The second elastic member (5) is configured to restore its deformation in a process that drives the movable electrode (3) to slide away from the first sleeve (21); The terminal post (41) can be slidably plugged into the second sleeve (31), and one end of the terminal post (41) is provided with a plurality of second abutment groove groups corresponding to the wedge-shaped abutment blocks (22) in a circumferential array, each second abutment groove group comprising a first V-notch (42) and a second V-notch (43) connected to each other, and a pointed cone (44) is formed between the first V-notch (42) and the second V-notch (43); During the process of inserting the terminal (41) into the second sleeve (31), each wedge-shaped abutment block (22) can abut and cooperate with the corresponding second abutment groove group, so that the first sleeve (21) slides and rotates, so that the wedge-shaped abutment block (22) enters the adjacent oblique groove (32) from the deep groove (33), thereby moving the movable electrode (3) to the connection position; A plurality of guide grooves (35) are provided in a circumferential array in the second sleeve (31), and a plurality of guide blocks (45) corresponding to each guide groove (35) are fixedly provided in a circumferential array on the terminal post (41), and each guide block (45) is capable of slidingly cooperating with the corresponding guide groove (35).

2. The anti-leakage connector for an electric power meter box according to claim 1, characterized in that: The second elastic member (5) is movably sleeved between the connecting column (6) and the first sleeve (21), and the second elastic member (5) is a spring.

3. The anti-leakage connector for electric power meter box according to claim 1, characterized in that: A plurality of limit rods (23) are fixedly arranged in a circumferential array on the first sleeve (21), and a limit block (24) is respectively arranged at the end of each limit rod (23). A plurality of plug blocks (46) corresponding to each limit block (24) are fixedly arranged in a circumferential array on the terminal (41), and when the movable electrode (3) is in a connecting position, the limit block (24) on each limit rod (23) can be engaged with the corresponding plug block (46).

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