Lead-out wire structure and power transformer containing the same

Abstract

The present invention discloses a lead wire structure and an electric transformer containing the same, belonging to the technical field of transformers. It comprises a lead seat, a first lead terminal, a second lead terminal and a connector. After the connector rotates, the first lead terminal is pushed to be deformed by force, the first lead terminal is kept in contact with the second lead terminal, and the second lead terminal is kept restricted on the first lead terminal. The lead wire structure adopts an inserting structure, and by rotating the connector, the first lead terminal is kept under force, deformed, and in contact with the second lead terminal to achieve electrical connection. At the same time, when the first lead terminal is connected to the transformer body, it is only necessary to rotate the rotating part, ensuring that the electrical connection components are connected together before and after installation, and do not need to be disassembled and installed separately. It can effectively improve the connection strength and conductive performance between the first lead terminal and the transformer body, reduce the risk of parts falling during installation, and improve the installation efficiency of the lead wire structure.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a lead wire structure and a power transformer containing the lead wire structure. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil and iron core. Its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. During the assembly and use of the transformer, an auxiliary lead wire structure is required.

[0003] Currently, after the transformer is produced and processed, it is usually necessary to fix the lead wires on the transformer. When fixing the existing transformer lead wires, multiple cables are usually bundled and stacked together for fixation, resulting in an unstable connection between the cables and the transformer lead wires.

[0004] Chinese patent CN206076019U discloses a lead wire structure of a transformer, in which a skeleton is provided on the transformer, and pins are provided on the skeleton. Barbs for clamping and multiple grooves for winding are provided on the pins, near one end of the skeleton, and the grooves are symmetrically arranged on both sides of the pins. The pins are clamped on the skeleton, and the barbs and the pins are integrally formed. An insulating sleeve is sleeved on the barbs or the barbs are sprayed with an insulating layer. This type of device can quickly and stably wind the lead ends of the winding group inside the transformer onto the pins without welding, eliminating technical problems such as cold welding or loose welding caused by welding, and saving solder. However, the structure of this type of device is relatively simple, which is not convenient for staff to assemble the lead wire structure. In addition, during the wiring process, the external wiring and the lead wire are prone to loosening, resulting in unstable electrical connection. Summary of the Invention

[0005] In order to solve the above-mentioned defects in the prior art, the present invention proposes a lead wire structure and a power transformer containing the same.

[0006] The technical solution of the present invention is achieved as follows:

[0007] A lead wire structure, characterized by comprising:

[0008] A lead-out base connected to the transformer body, the lead-out base being provided with a plurality of fixing holes, the lead-out base being connected to the transformer body via bolts, and the lead-out base being further provided with a first positioning hole;

[0009] A first lead terminal connected to the lead base, wherein the first lead terminal is provided with a second positioning hole that matches the first positioning hole, and the first positioning hole and the second positioning hole are provided with an electrical connection component for fixing the first lead terminal to the lead base;

[0010] A second lead terminal that cooperates with the first lead terminal, wherein the second lead terminal is mated and inserted into the first lead terminal;

[0011] and a connector for connecting the second lead terminal to the first lead terminal, wherein after the connector rotates, the first lead terminal is pushed to deform under force, thereby maintaining contact between the first lead terminal and the second lead terminal and keeping the second lead terminal constrained on the first lead terminal;

[0012] The first lead terminal is composed of a first mounting end and a contact arm symmetrically arranged on the first mounting end, and a movable area for accommodating the connecting member is formed between the contact arms.

[0013] The second lead-out terminal is provided with an insertion slot that matches the first lead-out terminal. After the connecting member rotates, the contact arm is kept deformed by force and close to the inner wall of the insertion slot.

[0014] In the present invention, a sliding groove is provided in the insertion groove, and a sliding block that cooperates with the sliding groove is provided on the contact arm.

[0015] In the present invention, a first limiting tooth is provided on the contact arm, and a second limiting tooth cooperating with the first limiting tooth is provided in the insertion groove.

[0016] In the present invention, the connecting member is composed of a rotating body, a disk body, a pushing body and a blocking body. The pushing body and the blocking body are elliptical structures. The pushing body is installed in cooperation with the active area. The area of the pushing body is smaller than that of the blocking body. The contact arm is provided with a accommodating chamber for accommodating the blocking body.

[0017] In the present invention, a gap is formed between the contact arms, a protrusion is provided on the pushing body and is arranged in the gap, and a recessed groove cooperating with the protrusion is provided on the inner wall of the active area.

[0018] In the present invention, a rotationally symmetrical positioning rod is provided at the lower end of the disc body, a limiting groove cooperating with the positioning rod is provided on the contact arm, and a positioning chamber is provided in the limiting groove.

[0019] In the present invention, the electrical connection assembly is provided with a sleeve, a rotating member and a rotatable member. The rotating member is arranged in the middle of the sleeve. The rotatable member is symmetrically arranged and hinged to the sleeve through a hinged rod.

[0020] In the present invention, the second positioning hole is provided with symmetrically arranged positioning grooves, the depth of the positioning grooves is smaller than the depth of the second positioning hole, and the sleeve is provided with a positioning block that cooperates with the positioning grooves.

[0021] In the present invention, a threaded hole, a through hole and a rotating area are formed in the middle of the sleeve. The rotating part is composed of a hexagonal block, a blocking block, a threaded portion and a rod body. The threaded portion cooperates with the threaded hole, the rod body is arranged in the through hole, and the rotating part is arranged in the rotating area. By rotating the rotating part, the rod body is kept pushing the rotating part to rotate around the hinged rod.

[0022] A power transformer comprises the above-mentioned lead wire structure.

[0023] The lead wire structure and power transformer incorporating the same according to the present invention have the following beneficial effects: the lead wire structure adopts an insertable structure, and by rotating the connecting member, the first lead terminal is subjected to force, deformed, and brought into contact with the second lead terminal to achieve electrical connection. Furthermore, when connecting the first lead terminal to the transformer body, only the rotating member needs to be rotated, ensuring that the electrical connection components are connected together before and after installation, eliminating the need for separate disassembly and installation. This effectively improves the connection strength and electrical conductivity between the first lead terminal and the transformer body, reduces the risk of components falling during installation, and improves the installation efficiency of the lead wire structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a power transformer of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the lead wire assembly structure;

[0026] Figure 3 for Figure 2 A top view of

[0027] Figure 4 for Figure 3 The cross-sectional view at AA in the figure;

[0028] Figure 5 for Figure 2 Exploded diagram;

[0029] Figure 6 for Figure 5 A perspective view of the second lead terminal structure;

[0030] Figure 7 for Figure 5 A schematic diagram of the structure of the first lead terminal in FIG.

[0031] Figure 8 for Figure 7 A local enlarged view of point B in FIG;

[0032] Figure 9 for Figure 7 A schematic diagram of the structure in another direction;

[0033] Figure 10 for Figure 5 Schematic diagram of the connector structure in ;

[0034] Figure 11 for Figure 10 A schematic diagram of the structure in another direction;

[0035] Figure 12 for Figure 5 Schematic diagram of the electrical connection component structure;

[0036] Figure 13 for Figure 12 The main perspective view;

[0037] Figure 14 for Figure 12 Cross-sectional view of the sleeve structure;

[0038] Figure 15 for Figure 12 Schematic diagram of the structure of rotating parts and rotating parts.

[0039] In the figure: lead-out seat 1, first lead-out terminal 2, second lead-out terminal 3, connector 4, transformer body 5, connecting terminal 6, holding hole 7, fixing hole 8, opening slot 9, electrical connection assembly 10, rotating member 11, first positioning hole 12, rotating member 13, first plate 14, second plate 15, second positioning hole 16, first mounting end 17, contact arm 18, movable area 19, first limiting tooth 20, insertion slot 21, second limiting tooth 22, sliding slot 23, sliding block 24, connecting arm 25, fixing plate 26, Insertion hole 27, disk body 28, pushing body 29, blocking body 30, accommodating chamber 31, gap 32, protrusion 33, recessed groove 34, positioning rod 35, limiting groove 36, positioning chamber 37, arcuate surface 38, sleeve 39, hinged rod 40, positioning groove 41, positioning block 42, threaded hole 43, through hole 44, rotating area 45, hexagonal block 46, blocking block 47, threaded portion 48, rod body 49, contact surface 50, pushing surface 51, rotating body 52, hinged hole 53, pushing area 54, lead wire assembly 55. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0041] like Figures 1 to 15As shown, the lead wire structure of the present invention includes a lead wire assembly 55, which is connected to the connecting terminal 6. The lead wire assembly 55 includes a lead base 1, a first lead terminal 2, a second lead terminal 3 and a connecting member 4. The lead base 1 is installed on the transformer body 5, and a plurality of connecting terminals 6 are provided on the transformer body 5. The connecting terminals 6 are provided with retaining holes 7, which cooperate with the fixing holes 8 to fix the lead base 1 to the connecting terminals 6. An open groove 9 is provided on the connecting terminal 6, and the open groove 9 is used to accommodate the electrical connection assembly 10, so that the electrical connection assembly 10 can move therein, facilitating the rotation of the rotating member 11, thereby electrically connecting the first lead terminal 2 to the lead base 1.

[0042] The lead-out socket 1 is connected to the transformer body 5 and is provided with multiple fixing holes 8. The lead-out socket 1 is connected to the transformer body 5 by bolts. Furthermore, the lead-out socket 1 is provided with a first positioning hole 12. The first positioning hole 12 is used to accommodate the electrical connection assembly 10, allowing it to be inserted therein. The first positioning hole 12 then rotates in conjunction with the rotating member 13, driving the rotating member 11 to expand and maintain contact between the expanded rotating member 11 and the lead-out socket 1.

[0043] The lead-out base 1 consists of a first plate 14 and a second plate 15. The first plate 14 is thicker than the second plate 15, and the first positioning hole 12 and the fixing hole 8 are both provided on the second plate 15. The first lead-out terminal 2 is provided on the first plate 14, and the second lead-out terminal 3 is provided on the second plate 15. When the second lead-out terminal 3 is docked with the first lead-out terminal 2, the thicker first plate 14 can also limit the insertion position of the second lead-out terminal 3.

[0044] The first lead terminal 2 is connected to the lead base 1 . The first lead terminal 2 is provided with a second positioning hole 16 that matches the first positioning hole 12 . The first positioning hole 12 and the second positioning hole 16 are provided with an electrical connection component 10 that fixes the first lead terminal 2 on the lead base 1 .

[0045] First lead-out terminal 2 comprises a first mounting end 17 and contact arms 18 symmetrically positioned thereon. Contact arms 18 exhibit a degree of elasticity and are capable of deformation under load. A movable region 19 is formed between contact arms 18 to accommodate connector 4. Connector 4 can rotate within movable region 19, pushing contact arms 18 and causing them to deform under load.

[0046] A first limiting tooth 20 is provided on the contact arm 18, and a second limiting tooth 22 is provided in the insertion groove 21 to cooperate with the first limiting tooth 20. After the first limiting tooth 20 and the second limiting tooth 22 are engaged, the contact arm 18 can be kept in contact with the second lead-out terminal 3 to achieve electrical connection, and the position of the second lead-out terminal 3 can also be locked by the first limiting tooth 20 and the second limiting tooth 22, thereby improving the stability of the connection between the first lead-out terminal 2 and the second lead-out terminal 3.

[0047] The second lead terminal 3 is mated with the first lead terminal 2, and the second lead terminal 3 and the first lead terminal 2 are mated and inserted. The second lead terminal 3 is provided with an insertion slot 21 that mates with the first lead terminal 2. After the connector 4 rotates, the contact arm 18 is deformed by force and close to the inner wall of the insertion slot 21. To facilitate the docking of the second lead terminal 3 and the first lead terminal 2, a sliding slot 23 is provided in the insertion slot 21, and the contact arm 18 is provided with a sliding block 24 that mates with the sliding slot 23, so that the first lead terminal 2 and the second lead terminal 3 can slide without positional displacement.

[0048] The second lead terminal 3 is also provided with a connecting arm 25, which is provided with a fixing plate 26. The cable to be connected is placed in the middle of the fixing plate 26, and the fixing plate 26 is pressed so that it deforms under force and is placed on the cable, maintaining the connection between the cable and the second lead terminal 3, thereby facilitating the electrical connection between the cable and the first lead terminal 2. The second lead terminal 3 is also provided with a cable insertion hole 27, which can maintain the position of the cable.

[0049] The connecting member 4 is used to connect the second lead terminal 3 with the first lead terminal 2. After the connecting member 4 rotates, it pushes the first lead terminal 2 to deform under force, keeping the first lead terminal 2 in contact with the second lead terminal 3 and keeping the second lead terminal 3 restricted on the first lead terminal 2.

[0050] Connector 4 comprises a rotating body 52, a disc 28, a pusher 29, and a blocking body 30. Both pusher 29 and blocking body 30 are elliptical in shape. Pusher 29 is mounted in conjunction with active area 19. The area of pusher 29 is smaller than that of blocking body 30. Contact arm 18 is provided with a receiving chamber 31 for accommodating blocking body 30.

[0051] Since the pushing body 29 is in an elliptical structure with a long axis and a short axis, when it rotates, the long axis pushes the contact arm 18 so that the contact arm 18 is deformed by force and moves closer to the second lead-out terminal 3 .

[0052] Because the area of the pusher 29 is smaller than that of the stopper 30, the area of the pusher 29 matches the area of the active area 19, so the area of the stopper 30 is larger than the area of the active area 19. When installing the connector 4, it is necessary to bend the contact arm 18 so that the contact arm 18 is forced to expand, and then place the connector 4 in the active area 19.

[0053] At the same time, a gap 32 is formed between the contact arms 18. The pusher 29 is provided with a protrusion 33 disposed within the gap 32. The inner wall of the movable area 19 is provided with a recessed groove 34 that cooperates with the protrusion 33. The gap 32 accommodates the protrusion 33. During rotation, the protrusion 33 cooperates with the positioning rod 35 to push the contact arm 18.

[0054] A rotationally symmetrical positioning rod 35 is provided at the lower end of the disc body 28. A limiting groove 36 is provided on the contact arm 18 to cooperate with the positioning rod 35. A positioning chamber 37 is provided in the limiting groove 36. When the second lead terminal 3 and the first lead terminal 2 do not need to be limited in position, the positioning rod 35 remains in the positioning chamber 37. When the connector 4 needs to be rotated, the connector 4 drives the positioning rod 35, causing it to move along the arcuate surface 38 of the limiting groove 36. The contact arm 18 is gradually pushed by the pusher 29, so that the first limiting tooth 20 and the second limiting tooth 22 engage.

[0055] The electrical connection assembly 10 includes a sleeve 39, a rotating member 13, and a rotating member 11. The rotating member 13 is disposed in the middle of the sleeve 39. The rotating member 11 is symmetrically disposed and hinged to the sleeve 39 via a hinge rod 40. The sleeve 39 is provided with a hinge hole 53 that cooperates with the hinge rod 40.

[0056] The second positioning hole 16 is provided with symmetrical positioning grooves 41, the depth of which is less than that of the second positioning hole 16. The sleeve 39 is provided with a positioning block 42 that cooperates with the positioning grooves 41. The cooperation between the positioning grooves 41 and the positioning block 42 not only restricts the position of the sleeve 39 but also prevents the sleeve 39 from rotating, facilitating the rotation of the rotating member 13, thereby enabling the rotating member 13 to push the rotating member 11, causing the rotating member 11 to be pushed and unfolded.

[0057] The center of sleeve 39 is formed with a threaded hole 43, a through-hole 44, and a rotational region 45. Rotating member 13 is composed of a hexagonal block 46, a stopper 47, a threaded portion 48, and a rod 49. A barrel wrench engages with hexagonal block 46 to rotate rotating member 13. Threaded portion 48 engages with threaded hole 43, rod 49 is positioned within through-hole 44, and rotating member 11 is positioned within rotational region 45. By rotating rotating member 13, rod 49 is retained to push rotating member 11 to rotate about hinged rod 40.

[0058] Since the rotating member 13 is provided with a threaded portion 48 , after the rotating member 13 is rotated, the threaded portion 48 can be engaged with the threaded hole 43 , so that the rotating member 13 pushes the rotating member 11 to rotate around the hinge rod 40 .

[0059] Rotating member 11 is provided with a contact surface 50 and a push surface 51. Rotating member 11 is triangular in shape, and a push region 54 is formed between rotating members 11. Rotating member 11 is pushed by rod 49, which enters push region 54. This causes push surface 51, which is in contact with lead-out socket 1, to rotate, keeping contact surface 50 in contact and moving toward lead-out socket 1. This secures lead-out socket 1 and first lead-out terminal 2, improving the stability of the electrical connection.

[0060] A power transformer comprises the above-mentioned lead wire structure.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lead wire structure, characterized in that: include: A lead-out base connected to the transformer body, the lead-out base being provided with a plurality of fixing holes, the lead-out base being connected to the transformer body via bolts, and the lead-out base being further provided with a first positioning hole; A first lead terminal connected to the lead base, wherein the first lead terminal is provided with a second positioning hole that matches the first positioning hole, and the first positioning hole and the second positioning hole are provided with an electrical connection component for fixing the first lead terminal to the lead base; A second lead terminal that cooperates with the first lead terminal, wherein the second lead terminal is mated and inserted into the first lead terminal; and a connector for connecting the second lead terminal to the first lead terminal, wherein after the connector rotates, the first lead terminal is pushed to deform under force, thereby maintaining contact between the first lead terminal and the second lead terminal and keeping the second lead terminal constrained on the first lead terminal; The first lead terminal is composed of a first mounting end and a contact arm symmetrically arranged on the first mounting end, and a movable area for accommodating the connector is formed between the two contact arms symmetrically arranged on the first mounting end. The second lead-out terminal is provided with an insertion slot that matches the first lead-out terminal. After the connecting member rotates, the contact arm is kept deformed by force and close to the inner wall of the insertion slot.

2. The lead-out structure according to claim 1, wherein: A sliding groove is provided in the inserting groove, and a sliding block matched with the sliding groove is provided on the contact arm.

3. The lead-out structure according to claim 1, wherein: The contact arm is provided with a first limiting tooth, and the insertion slot is provided with a second limiting tooth that cooperates with the first limiting tooth.

4. The lead-out structure according to claim 1, wherein: The connecting member is composed of a rotating body, a disk body, a pushing body and a blocking body. The pushing body and the blocking body are elliptical structures. The pushing body is installed in cooperation with the active area. The area of the pushing body is smaller than that of the blocking body. The contact arm is provided with a accommodating chamber for accommodating the blocking body.

5. The lead-out structure according to claim 4, characterized in that: A gap is formed between the two contact arms symmetrically arranged on the first mounting end, the pushing body is provided with a protrusion arranged in the gap, and the inner wall of the active area is provided with a recessed groove matched with the protrusion.

6. The lead-out structure according to claim 5, characterized in that: A rotationally symmetrical positioning rod is provided at the lower end of the disc body, a limiting groove matched with the positioning rod is provided on the contact arm, and a positioning chamber is provided in the limiting groove.

7. The lead-out structure according to claim 1, wherein: The electrical connection assembly is provided with a sleeve, a rotating member and a rotatable member. The rotating member is arranged in the middle of the sleeve. The rotatable member is symmetrically arranged and hinged to the sleeve through a hinged rod.

8. The lead-out structure according to claim 7, characterized in that: The second positioning hole is provided with symmetrical positioning grooves, the depth of the positioning grooves is smaller than the depth of the second positioning hole, and the sleeve is provided with a positioning block that cooperates with the positioning grooves.

9. The lead-out structure according to claim 8, characterized in that: A threaded hole, a through hole and a rotating area are formed in the middle of the sleeve. The rotating part consists of a hexagonal block, a blocking block, a threaded portion and a rod body. The threaded portion cooperates with the threaded hole. The rod body is arranged in the through hole. The rotating part is arranged in the rotating area. By rotating the rotating part, the rod body is kept to push the rotating part to rotate around the hinged rod.

10. A power transformer, characterized in that: The lead wire structure described in claim 1 is adopted.

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