Junction box of welding power supply

Abstract

The utility model discloses a junction box of a welding power source, which belongs to the technical field of welding and comprises a box body with a containing space, the box body comprises a box seat and a box cover connected with the box seat, the periphery of the box cover is bent towards the box seat by a certain angle to form a groove, a connecting piece is fixedly arranged on the top wall of the groove, and a first through hole is formed in the connecting piece. A first counter bore is formed in the lower side of the groove; connecting bases are arranged on the two sides of the top of the box base respectively, second through holes are formed in the connecting bases, and second counter bores are formed in the lower side of the box base. The connecting piece is arranged between the connecting bases on the two sides, a flexible rotating shaft penetrates through the first through hole and the second through hole, and a fastener penetrates through the first counter bore and the second counter bore. According to the junction box, the box cover and the junction box base are designed into a whole, the box cover and the junction box base are connected through the fastener and the flexible rotating shaft, multi-dimensional separation of a traditional junction box structure is changed, potential safety hazards caused by loss of the box cover are avoided, and meanwhile the installation mode is simplified.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding, and particularly relates to a junction box of a welding power source. Background Technique

[0002] The statements in this part only provide background technical information related to the present disclosure, and do not necessarily constitute prior art.

[0003] At present, in the field of inverter welding, the junction box is an important electrical connection device, mainly used for electrically connecting devices such as power sources and controllers to the welding machine. However, most of the junction boxes used in existing high-power welding machines adopt a split-type junction box base and junction box cover. When used on-site, the junction box cover is easily lost, resulting in dust, rainwater, etc. contacting the three-phase wires, causing potential safety hazards; traditional junction boxes use brackets installed on both sides of the junction box, and the brackets are installed on the welding power source through fasteners, and most of them are installed inside the welding power source, which is difficult to assemble, has low installation efficiency, and occupies a large installation space. Summary of the Utility Model

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a junction box of a welding power source, which improves the reliability and stability of the electrical connection of the junction box, simplifies the installation method of the junction box, reduces the operation difficulty, and enables ordinary users to easily use it.

[0005] To achieve the above object, the utility model is realized by the following technical solutions:

[0006] A junction box of a welding power source includes a box body with an accommodating space. The box body includes a box base and a box cover connected thereto. The four sides of the box cover are bent towards the box base by a certain angle to form a groove. A connecting member is fixedly arranged on the top wall of the groove. A first through hole is opened on the connecting member, and a first counterbore is opened on the lower side of the groove; on both sides of the top of the box base, connection seats are respectively arranged. A second through hole is opened on the connection seat, and a second counterbore is opened on the lower side of the box base; the connecting member is placed between the two side connection seats, a flexible rotating shaft is passed through the first through hole and the second through hole, and a fastener is passed through the first counterbore and the second counterbore.

[0007] Further technical solution, an opening is opened on the bottom wall of the groove.

[0008] Further technical solution, the flexible rotating shaft includes an intermediate shaft, and springs are sleeved on both sides of the intermediate shaft.

[0009] Further technical solution, third counterbores are opened at three corners of the four corners on the side of the box base, and a second counterbore is opened at the other corner.

[0010] Further technical solution: On one side of the box base close to the box cover, a first isolation component is fixedly provided, and on one side of the box base far from the box cover, a second isolation component is fixedly provided.

[0011] Further technical solution: A plurality of brass pieces are interspersed between the first isolation component and the second isolation component.

[0012] Further technical solution: The brass piece is in an L shape and includes a first wiring board and a second wiring board that are perpendicular to each other.

[0013] Further technical solution: The first wiring board is fixedly arranged on the box base between the first isolation components and is parallel to the first isolation component.

[0014] Further technical solution: The second wiring board is fixedly arranged on the box base between the second isolation components and is perpendicular to the second isolation component.

[0015] Further technical solution: A first wiring hole is opened on the first wiring board, and a second wiring hole is opened on the second wiring board.

[0016] Advantages of the present utility model:

[0017] The junction box of the present utility model is small in volume. The junction box is fixed on the welding power source through four counterbores located on the box base, eliminating the traditional mounting bracket, occupying less space, and being more suitable for use in a welder with limited space.

[0018] The wiring row structure of the present utility model is reasonably designed and the installation method is simple. Since most traditional junction boxes are installed inside the welding power source, when repairing the junction box, the welding power source needs to be opened and taken out from the inside. The present utility model uses fasteners to install the junction box to the welding power source from the outside, which is convenient for installation and disassembly.

[0019] The junction box of the present utility model designs the box cover and the junction box base as an integrated body. The connection between the box cover and the junction box base is realized through fasteners and a flexible rotating shaft, changing the multi-dimensional separation of the traditional junction box structure, avoiding potential safety hazards caused by the loss of the box cover, and having strong flexibility and practicability. At the same time, the integrated structure also prevents sundries from entering the junction box and affecting the wiring, improving the reliability and stability of the electrical connection of the junction box. Description of the Drawings

[0020] The drawings are used to provide further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model.

[0021] Figure 1 It is a schematic diagram of the overall structure of the junction box of the present utility model;

[0022] Figure 2 Structural decomposition schematic diagram of the junction box of the present utility model;

[0023] Figure 3 Schematic diagram of the lid structure of the junction box of the present utility model;

[0024] Figure 4 Front structural schematic diagram of the base of the junction box of the present utility model;

[0025] Figure 5 Back structural schematic diagram of the base of the junction box of the present utility model.

[0026] Wherein, 1 - lid, 101 - connecting member, 102 - first through hole, 103 - first counterbore, 104 - opening, 2 - base, 201 - connecting seat, 202 - second through hole, 203 - second counterbore, 204 - third counterbore, 205 - first spacer, 206 - second spacer, 207 - third spacer, 208 - fourth spacer, 209 - first partition, 210 - second partition, 211 - third partition, 212 - fifth spacer, 213 - sixth spacer, 214 - seventh spacer, 215 - eighth spacer, 216 - fourth partition, 217 - fifth partition, 218 - sixth partition, 219 - first support member, 220 - second support member, 221 - third support member 3 - flexible rotating shaft, 301 - intermediate shaft, 302 - spring, 4 - fastener, 5 - first brass, 6 - second brass, 7 - third brass, 8 - first wiring board, 9 - second wiring board, 10 - first wiring hole, 11 - second wiring hole. Specific embodiments

[0027] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0028] As Figure 1 、 Figure 2 shown, an embodiment of the present utility model provides a junction box for a welding power source, including a box body having an accommodation space, the box body including a base 2 and a lid 1 connected thereto, the periphery of the lid 1 is bent at a certain angle towards the base 2 to form a groove, a connecting member 101 is fixedly provided on the top wall of the groove, a first through hole 102 is opened on the connecting member 101, and a first counterbore 103 is opened on the lower side of the groove; connecting seats 201 are respectively provided on both sides of the top of the base 2, a second through hole 202 is opened on the connecting seat 201, and a second counterbore 203 is opened on the lower side of the base 2; the connecting member 101 is placed between the two connecting seats 201, a flexible rotating shaft 3 is inserted into the first through hole 102 and the second through hole 202, and a fastener 4 is inserted into the first counterbore 103 and the second counterbore 203.

[0029] In this embodiment, the junction box includes a box body with an accommodation space. The box body includes a box base 2 and a box cover 1 connected thereto. The box cover 1 is used to accommodate the box base 2 and weld the three-phase power lines, protecting the three-phase power lines and preventing the influence of external machinery or environment on the three-phase power lines. The box base 2 is used for the connection and current conduction of welding the external cable of the power supply and the internal three-phase power lines of the welding power supply.

[0030] In some embodiments, the box cover can be made of PC material, and the box base is made of ABS material. It can be flexibly selected according to the actual situation, and no specific limitation is made in this embodiment.

[0031] In this embodiment, as Figure 3 shown, the box cover 1 is in an overall three-dimensional rectangular structure, and its four sides are bent at a certain angle towards the box base 2 to form a groove. The box base 2 is received in the groove. A connecting member 101 is fixedly provided on the top wall of the groove, and a first through hole 102 is horizontally opened on the connecting member 101.

[0032] The connecting member 101 is designed with a structure of semi-openings on both sides and a through hole in the middle. That is to say, the connecting member 101 has openings at a certain distance from the edges on both sides respectively, and the openings face the box base 2 direction, which is convenient for accommodating the flexible rotating shaft 3. The sum of the distances of the openings on both sides of the connecting member 101 is less than the overall length of the connecting member 101. In some embodiments, the connecting member 101 is arranged at the middle position of the top wall of the groove.

[0033] A first counterbore 103 is opened at a position near one side wall on the lower side of the groove. The first counterbore 103 is a cylindrical member protruding inward from the box cover 1. The cylindrical member is used to accommodate the fastener 4, and the box cover 1 and the box base 2 are fixedly connected through the fastener 4.

[0034] An opening 104 is opened on the bottom wall of the groove. The opening 104 is used for the three-phase power lines of the welding power supply to pass through. In some embodiments, the opening 104 on the bottom wall of the groove is a rectangular opening and is arranged at the middle position of the bottom wall.

[0035] In this embodiment, as Figure 4 shown, connection seats 201 are respectively arranged on both sides of the top of the box base 2, and a second through hole 202 is horizontally opened on the connection seats 201. The box base 2 is placed in the groove formed by the box cover 1, and the connecting member 101 is placed between the connection seats 201 on both sides, so that the first through hole 102 is aligned with the second through holes 202 on both sides. After alignment, a flexible rotating shaft 3 is inserted through the first through hole 102 and the second through holes 202. The fixed connection between the box cover 1 and the box base 2 is realized through the flexible rotating shaft 3 arranged on the top of the junction box, and the box cover 1 can be opened outwards from the box base 2 with the flexible rotating shaft 3 as the center.

[0036] It should be noted that the distance between the connection seats 201 on both sides of the top of the box base 2 is greater than the length of the connecting member 101 on the top wall of the box cover 1. The box base 2 and the box cover 1 are adapted in terms of shape, size, etc.

[0037] As Figure 2 shown, the flexible rotating shaft 3 includes an intermediate shaft 301, and springs 302 are sleeved on both sides of the intermediate shaft 301 at a certain distance from the edge. That is to say, the flexible rotating shaft 3 is composed of the intermediate shaft 301 and the springs 302. The flexible rotating shaft 3 is connected to the box cover 1 through the first through hole 102 and connected to the box base 2 through the second through holes 202 on both sides of the top of the box base 2. Specifically, the intermediate shaft 301 is inserted into the first through hole 102, and the springs 302 on both sides are placed on the two outer sides of the connecting member 101, that is, between the semi-openings of the connecting member 101 and the connecting seat 201; one end of the intermediate shaft 301 is inserted into one second through hole 202, and the other end is inserted into the other second through hole 202, so as to realize the rotational fixation of the box cover 1 and the top of the box base 2 through the flexible rotating shaft 3.

[0038] The spring 302 can drive the box cover 1 to automatically close, so that the junction box is always in a closed state under natural conditions, preventing external environmental interference. It changes the multi-dimensional separation mode of the traditional junction box structure, that is, the loss of the box cover 1 caused by the separation of the box cover 1 and the box base 2, and avoids the occurrence of potential safety hazards. In this embodiment, the spring 302 mode is adopted to realize the closed state of the junction box, but the protection scope of the present utility model is not limited to the materials and types adopted.

[0039] As Figure 2 、 Figure 4 shown, third counterbores 204 are provided at the triangular corners of the four corners on the side of the box base 2, and a second counterbore 203 is provided at the other corner. The second counterbore 203 is provided at the lower left side position of the box base 2, opposite to the position where the box cover 1 is provided with the first counterbore 103. Each counterbore is fixed by a fastener 4. The third counterbore 204 at the triangular corner fixes the box base 2 on the welding power source through the fastener 4; the first counterbore 103 and the second counterbore 203 fix the box cover 1 and the box base 2 through the fastener 4, and at the same time fix the corner position on the welding power source through the second counterbore 203, realizing the stable fixation of the box cover 1, the box base 2 and the welding power source.

[0040] As Figure 2As shown, the fastener 4 is a screw. The fastener 4 passes through the first counterbore 103 and is screwed tightly into the second counterbore 203 to achieve the fixation of the lid 1 and the base 2, and the base 2 and the welding power supply. That is to say, the junction box is fixedly connected to the base 2 and the lid 1 as a whole by a screw and the flexible rotating shaft 3. The fastener 4 passes through the third counterbore 204 and is screwed tightly to fix the junction box on the welding power supply. That is to say, the junction box is fixedly connected to the welding power supply by three screws at the triangular part and simultaneously using one screw when the lid 1 and the base 2 are fixed. During use, the junction box is installed and fixed on the welding power supply in a vertical state through the fastener 4, making the entire junction box perpendicular to the ground, changing the traditional inclined method, facilitating the installer to observe and wire, and also facilitating the use of installation tools, making the junction box easier to install.

[0041] In this embodiment, as Figure 4 shown, a first isolation component is fixedly provided on one side of the base 2 close to the lid 1. As Figure 5 shown, a second isolation component is fixedly provided on one side of the base 2 away from the lid 1, which plays an insulating and isolating role for the connection terminals. A plurality of brass pieces are interspersed between the first isolation component and the second isolation component. The brass pieces are in an L shape and include a first wiring board 8 and a second wiring board 9 that are perpendicular to each other. The first wiring board 8 is fixedly provided on the base 2 between the first isolation components and is parallel to the first isolation component; the second wiring board 9 is fixedly provided on the base 2 between the second isolation components and is perpendicular to the second isolation component.

[0042] As Figure 4 shown, the first isolation component includes a first isolation piece 205 and a second isolation piece 206 respectively arranged on both sides of the side surface of the base 2. A third isolation piece 207 and a fourth isolation piece 208 are sequentially arranged at intervals between the first isolation piece 205 and the second isolation piece 206. The third isolation piece 207 is spaced a certain distance from the first isolation piece 205, and the fourth isolation piece 208 is spaced a certain distance from the second isolation piece 206. That is to say, the first isolation piece 205, the third isolation piece 207, the fourth isolation piece 208, and the second isolation piece 206 are sequentially arranged at intervals, isolating a plurality of chambers.

[0043] Furthermore, a first partition board 209 is arranged between the upper ends of the first isolation piece 205 and the third isolation piece 207. The first partition board 209 and the first isolation piece 205 and the third isolation piece 207 together isolate the first chamber; a second partition board 210 is arranged between the upper ends of the third isolation piece 207 and the fourth isolation piece 208. The second partition board 210 and the third isolation piece 207 and the fourth isolation piece 208 together isolate the second chamber; a third partition board 211 is arranged between the upper ends of the fourth isolation piece 208 and the second isolation piece 206. The third partition board 211 and the fourth isolation piece 208 and the second isolation piece 206 together isolate the third chamber.

[0044] In some embodiments, the lower ends of the first separator 205 and the second separator 206 are bent inward at a certain angle. The lower ends of the third separator 207 and the fourth separator 208 are bent inward at a certain angle.

[0045] As Figure 5 shown, the second isolation component includes a fifth separator 212 and a sixth separator 213 respectively arranged on both sides of the side surface of the cartridge base 2. A seventh separator 214 and an eighth separator 215 are sequentially arranged at intervals between the fifth separator 212 and the sixth separator 213. The seventh separator 214 is spaced apart from the fifth separator 212, and the eighth separator 215 is spaced apart from the sixth separator 213 by a certain distance. That is to say, the fifth separator 212, the seventh separator 214, the eighth separator 215 and the sixth separator 213 are sequentially arranged at intervals to isolate a plurality of chambers.

[0046] It should be noted that the first isolation component and the second isolation component are arranged on opposite side surfaces, and the fixing positions of the first separator 205, the third separator 207, the fourth separator 208, the second separator 206 and the fifth separator 212, the seventh separator 214, the eighth separator 215, the sixth separator 213 are opposite to each other.

[0047] Furthermore, a fourth partition 216 is arranged between the upper ends of the fifth separator 212 and the seventh separator 214, and a first support 219 is arranged between the lower ends. The fourth partition 216, the first support 219, the fifth separator 212 and the seventh separator 214 jointly isolate a fourth chamber; a fifth partition 217 is arranged between the upper ends of the seventh separator 214 and the eighth separator 215, and a second support 220 is arranged between the lower ends. The fifth partition 217, the second support 220, the seventh separator 214 and the eighth separator 215 jointly isolate a fifth chamber; a sixth partition 218 is arranged between the upper ends of the eighth separator 215 and the sixth separator 213, and a third support 221 is arranged between the lower ends. The sixth partition 218, the third support 221, the eighth separator 215 and the sixth separator 213 jointly isolate a sixth chamber.

[0048] In some embodiments, the first support 219, the second support 220, and the third support 221 are all at a certain distance from the bottom ends of the corresponding separators on both sides.

[0049] Brasses are respectively inserted and fixedly arranged on the box base 2, including a first brass 5, a second brass 6 and a third brass 7. The first brass 5, the second brass 6 and the third brass 7 are in an L shape and include a first wiring board 8 and a second wiring board 9 that are perpendicular to each other. The first wiring boards 8 of the first brass 5, the second brass 6 and the third brass 7 are respectively placed in the first chamber, the second chamber and the third chamber, and the second wiring boards 9 of the first brass 5, the second brass 6 and the third brass 7 are respectively placed in the sixth chamber, the fifth chamber and the fourth chamber. That is to say, the first brass 5, the second brass 6 and the third brass 7 respectively pass through the box base 2, and their first wiring boards 8 and second wiring boards 9 are respectively placed on opposite side surfaces of the box base 2.

[0050] Further, the first wiring board 8 is parallel to each spacer, and a first wiring hole 10 is opened thereon for connecting the three-phase wires of the welding power supply. The second wiring board 9 is perpendicular to each spacer and parallel to each support member. The first support member 219, the second support member 220 and the third support member 221 are respectively used to support the second wiring board 9 of the third brass 7, the second wiring board 9 of the second brass 6 and the second wiring board 9 of the first brass 5. Openings are provided on the first support member 219, the second support member 220 and the third support member 221, and second wiring holes 11 are opened on the second wiring boards 9 of the third brass 7, the second wiring boards 9 of the second brass 6 and the second wiring boards 9 of the first brass 5. The three-phase wires of the welding power supply are connected to the second wiring holes 11 of the corresponding second wiring boards 9 through the openings of the support members.

[0051] The current is passed through by the first brass 5, the second brass 6 and the third brass 7, and is installed vertically at 90 degrees to complete the current circulation between the cable outside the welding power supply and the inside of the welding power supply.

[0052] Detailed description of the working principle:

[0053] The junction box of the present utility model fixedly connects the box cover 1 and the box base 2 into one body through the flexible rotating shaft 3 and the fastener 4 at one corner. When using the junction box, insert the fastener 4 into the third counterbore 204 at three of the four corners on the side surface of the box base 2 and tighten it to fix the box base 2 and the box cover 1 that have been connected into one body on the welding power supply, and connect the three-phase wires inside the welding power supply to the second wiring holes 11 of the third brass 7, the second brass 6 and the first brass 5 in the fourth chamber, the fifth chamber and the sixth chamber. Unscrew the fastener 4 at the first counterbore 103, open the box cover 1, connect the cable outside the welding power supply to the first wiring holes 10 of the first brass 5, the second brass 6 and the third brass 7 in the first chamber, the second chamber and the third chamber to achieve current passing. Close the box cover 1 and tighten the fastener 4 at the first counterbore 103 to fix the box cover 1 to the lower end of the box base 2, and at the same time fix the box base 2 at this corner on the welding power supply.

[0054] Although the specific implementation manners of the present utility model have been described above in conjunction with the accompanying drawings, they are not limitations on the protection scope of the present utility model. Those skilled in the art should understand that various modifications or deformations that can be made without creative efforts on the basis of the technical solutions of the present utility model are still within the protection scope of the present utility model.

Claims

1. A junction box of a welding power source, characterized in that: It includes a box body with an accommodating space. The box body includes a box base and a box cover connected thereto. The four sides of the box cover are bent towards the box base by a certain angle to form a groove. A connecting member is fixedly arranged on the top wall of the groove. A first through hole is provided in the connecting member, and a first counterbore is provided on the lower side of the groove. On both sides of the top of the box base, connecting seats are respectively arranged. A second through hole is provided in the connecting seat, and a second counterbore is provided on the lower side of the box base. The connecting member is placed between the two side connecting seats. A flexible rotating shaft is inserted through the first through hole and the second through hole, and a fastening member is inserted through the first counterbore and the second counterbore.

2. The junction box of a welding power source according to claim 1, characterized in that: An opening is provided in the bottom wall of the groove.

3. The junction box of a welding power source according to claim 1, characterized in that: The flexible rotating shaft includes an intermediate shaft, and springs are sleeved on both sides of the intermediate shaft.

4. The junction box of a welding power source according to claim 1, characterized in that: Third counterbores are provided at three of the four corners on the side of the box base, and a second counterbore is provided at the other corner.

5. The junction box of a welding power source according to claim 1, characterized in that: A first isolation component is fixedly arranged on one side surface of the box base close to the box cover, and a second isolation component is fixedly arranged on the other side surface of the box base away from the box cover.

6. The junction box of a welding power source according to claim 5, characterized in that: A plurality of brass pieces are interspersed between the first isolation component and the second isolation component.

7. The junction box of a welding power source according to claim 6, characterized in that: The brass piece is L-shaped and includes a first wiring board and a second wiring board that are perpendicular to each other.

8. The junction box of a welding power source according to claim 7, characterized in that: The first wiring board is fixedly arranged on the box base between the first isolation components and is parallel to the first isolation components.

9. The junction box of a welding power source according to claim 7, characterized in that: The second wiring board is fixedly arranged on the box base between the second isolation components and is perpendicular to the second isolation components.

10. The junction box of a welding power source according to claim 7, characterized in that: A first wiring hole is provided in the first wiring board, and a second wiring hole is provided in the second wiring board.

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