Junction box for transformer

Abstract

The utility model provides a junction box for a transformer, and relates to the technical field of transformer junction boxes. The junction box comprises a box body, a power connector, a signal connector and a cover plate, the box body is fixedly connected with a transformer, a plurality of mounting holes are formed in the box body, and the mounting holes are distributed in different surfaces of the box body; the power connector is fixedly connected with the box body through one of the mounting holes, and the power connector is used for inputting a high-voltage power supply to the transformer; the signal connector is fixedly connected with the box body through one of the plurality of mounting holes, and the signal connector is used for outputting a transformer working signal to a control cabinet; and the cover plate is used for blocking other unused mounting holes. A plurality of mounting holes are arranged on different surfaces of the box body, when power connectors and signal connectors of specific models are mounted, the mounting holes matched with the connectors in size are selected, the connectors are fixed on the box body through the mounting holes, and other unused mounting holes are blocked by cover plates, so that the junction box can adapt to connecting and mounting of the connectors of different models.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer junction boxes, in particular to a junction box used for a transformer. Background Art

[0002] Transformers are mainly used in induction heating, induction melting, power supply and other equipment in industrial production. Its main function is to convert the input voltage into the required voltage, and the output voltage can be changed by adjusting the number of turns of the winding. The junction box is a device used to connect the transformer to the electrical equipment. Its function is to connect the high-voltage or low-voltage output of the transformer to the electrical equipment to achieve the normal operation of the electrical equipment. The main purpose of installing the junction box is to protect the wire connection points to avoid damage to the wire connection points caused by external environmental factors (such as moisture, dust, etc.), so as to ensure the stability and long-term reliability of the wire connection points and reduce the failure rate. At the same time, the junction box can also effectively manage the wires, make the wiring neat and orderly, reduce the entanglement and crossing between the wires, and reduce the risk of failure caused by short circuits or poor contact between the wires. In addition, the junction box can also prevent the wires from falling off or breaking due to external force pulling. In some cases, the junction box can also play a transitional role, used to connect the wire tube and the terminal, protect the wires and connect the wires, and facilitate the installation and maintenance of electrical accessories.

[0003] The Chinese patent document with authorization announcement number CN215578017U provides a waterproof composite junction box for an electronic transformer, including a box bottom and a box cover. The box cover of the junction box is tightly fixed to the box bottom. By setting a sealing rubber ring, the box cover and the box bottom will not loosen during use of the junction box. By setting a waterproof plate, a positioning groove and a matching insert, the electronic transformer is fixedly installed and has good waterproof and anti-detachment performance.

[0004] For example, the junction box in the above technical solution adopts a fixed model interface, which is difficult to be universal for different users and cannot adapt to the needs of different production lines. Utility Model Content

[0005] In view of this, the utility model proposes a junction box used for a transformer, which solves the problem that the transformer interface cannot be unified and meets the use requirements of different users.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a junction box for a transformer, comprising a box body, a power connector, a signal connector and a cover plate, wherein:

[0007] The box body is fixedly connected to the transformer, and a plurality of mounting holes are provided on the box body, and the mounting holes are distributed on different surfaces of the box body;

[0008] The power connector is fixedly connected to the box body through one of the plurality of mounting holes, the input end of the power connector is connected to a power cable, and the output end is connected to a transformer connection port;

[0009] The signal connector is fixedly connected to the box body through one of the plurality of mounting holes, and the signal connector is used for connecting the input end to the transformer signal output line and the output end to the input cable of the control cabinet;

[0010] The cover plate is used to block other unused installation holes.

[0011] On the basis of the above technical solution, preferably, the mounting holes have different shapes and sizes for mounting power connectors and signal connectors of different models.

[0012] On the basis of the above technical solution, preferably, it also includes a power connector mounting plate, which is arranged between the power connector and the mounting hole, and is used to install and connect a power connector whose size does not match the mounting hole. Different models of power connectors are equipped with different power connector mounting plates.

[0013] On the basis of the above technical solution, preferably, it also includes a signal connector mounting plate, which is arranged between the signal connector and the mounting hole and is used to install and connect a signal connector that does not match the size of the mounting hole. Different types of signal connectors are equipped with different signal connector mounting plates.

[0014] On the basis of the above technical solution, preferably, it also includes an insulating plate, which is connected to the inside of the box body and is used to separate the inside of the box body into a strong current area and a weak current area to avoid interference between strong and weak current cables.

[0015] On the basis of the above technical solution, preferably, a power input cable is placed inside the high-voltage area, one end of the power input cable is connected to the transformer, and the other end is connected to the power connector, and a signal output cable is placed inside the low-voltage area, one end of the signal output cable is connected to the transformer, and the other end is connected to the signal connector.

[0016] On the basis of the above technical solution, preferably, it also includes a wiring terminal, which is connected to the transformer and is located in the weak current area on one side of the insulating plate, and is used to achieve electrical connection between the transformer and the signal connector.

[0017] On the basis of the above technical solution, preferably, it also includes a voltage feedback connector, the input end of the voltage feedback connector is connected to the positive and negative electrode interfaces of the transformer output end through a cable, and the output end of the voltage feedback connector is electrically connected to the control cabinet for feeding back the voltage signal of the transformer.

[0018] On the basis of the above technical solution, preferably, it further comprises a box cover, wherein the box cover matches the box body and is used to close the box body, and the box cover is provided with the mounting hole.

[0019] On the basis of the above technical solution, preferably, it further comprises a sealing gasket, and the sealing gasket is used to seal the box body and the box cover.

[0020] The junction box used in the transformer of the utility model has the following beneficial effects compared with the prior art:

[0021] (1) By setting a plurality of mounting holes on different surfaces of the box body, when a specific type of power connector and signal connector needs to be installed, a mounting hole matching the size of the power connector is selected, and the power connector of the model is fixedly connected to the box body through the mounting hole, and a mounting hole matching the size of the signal connector is selected, and the signal connector of the model is fixedly connected to the box body through the mounting hole, and then other unused mounting holes are connected and blocked with cover plates, so that the junction box can adapt to the connection and installation of connectors of different models.

[0022] (2) Mounting holes of different shapes and sizes are provided for mounting power connectors and signal connectors of different models. When the mounting hole does not match the size of the power connector or the signal connector, a corresponding mounting plate is provided, and the mounting plate is provided between the mounting hole and the power connector or the signal connector to connect the power connector or the signal connector whose size does not match the mounting hole. Different models of power connectors are provided with different power connector mounting plates, and different models of signal connectors are provided with different signal connector mounting plates, so that the junction box can adapt to the connection and installation of multiple different models of connectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The three-dimensional diagrams of different angles of the junction box used in the transformer in Embodiment 1 of the present utility model;

[0025] Figure 2 This is an exploded view of the junction box in Example 1 of the utility model;

[0026] Figure 3 The three-dimensional diagrams of different angles of the junction box used in the transformer in Embodiment 2 of the present utility model;

[0027] Figure 4This is an exploded view of the junction box in Example 2 of the present utility model;

[0028] Figure 5 The three-dimensional diagrams of different angles of the junction box used in the transformer in Embodiment 3 of the present utility model are as follows;

[0029] Figure 6 This is an exploded view of the junction box in Example 3 of the present utility model;

[0030] Figure numerals: 1, box body; 101, mounting hole; 2, power connector; 3, signal connector; 4, cover plate; 5, power connector mounting plate; 6, signal connector mounting plate; 7, insulating plate; 8, wiring terminal; 9, voltage feedback connector; 10, box cover; 11, sealing gasket. DETAILED DESCRIPTION

[0031] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Example 1

[0033] like Figure 1-2 As shown, the junction box used for the transformer of this embodiment includes a box body 1, a power connector 2, a signal connector 3 and a cover plate 4. The box body 1 is fixedly connected to the transformer. A plurality of mounting holes 101 are provided on the box body 1. The mounting holes 101 are distributed on different surfaces of the box body 1. The power connector 2 is fixedly connected to the box body 1 through one of the plurality of mounting holes 101. The input end of the power connector 2 is connected to the power cable, and the output end is connected to the transformer wiring port. The signal connector 3 is fixedly connected to the box body 1 through one of the plurality of mounting holes 101. The signal connector 3 is used to connect the input end to the transformer signal output line, and the output end is connected to the input cable of the control cabinet. The cover plate 4 is used to block other unused mounting holes 101.

[0034] As in the above structure, by setting multiple mounting holes 101 on different surfaces of the box body 1, when a specific type of power connector 2 and signal connector 2 needs to be installed, the mounting hole 101 that matches the size of the power connector is selected, the power connector 2 of the model is inserted into the mounting hole 101, and then it is fixed to the box body 1 using bolt fasteners, and the mounting hole 101 that matches the size of the signal connector 2 is selected, the signal connector 3 of the model is inserted into the mounting hole 101, and then it is fixed to the box body 1 using bolt fasteners, and then the cover plate 4 is sealed on other unused mounting holes 101, and it is fixed to the box body 1 using bolt fasteners.

[0035] Furthermore, the mounting holes 101 have different shapes and sizes and are used to mount power connectors 2 and signal connectors 3 of different models.

[0036] As shown in the above structure, since the models of power connectors 2 and signal connectors 3 used in actual production applications are different, in order to enable the junction box of the present application to adapt to different working scenarios, mounting holes 101 of different shapes and sizes are arranged on multiple sides of the box body 1 to meet the installation needs of power connectors 2 and signal connectors 3 of different models.

[0037] Furthermore, it also includes an insulating plate 7, which is connected to the inside of the box body 1 and is used to separate the inside of the box body 1 into a strong current area and a weak current area to avoid interference between strong current and weak current cables.

[0038] Furthermore, a power input cable is placed inside the high-voltage area, one end of the power input cable is connected to the transformer, and the other end is connected to the power connector 2. A signal output cable is placed inside the low-voltage area, one end of the signal output cable is connected to the transformer, and the other end is connected to the signal connector 3.

[0039] Specifically, the insulating plate 7 is a bent plate, and the two ends of the bent plate are riveted to the two sides of the box body 1 by screws, separating the power input line and the signal output cable into two areas, so that the cables in the junction box are arranged more neatly, and the strong and weak current cables do not interfere with each other.

[0040] Furthermore, it also includes a wiring terminal 8, which is connected to the transformer and is located in the weak current area on one side of the insulating plate 7, and is used to achieve electrical connection between the transformer and the signal connector 3.

[0041] Specifically, the wiring terminal 8 is connected to the current signal line and the temperature signal line of the transformer, and is electrically connected to the signal connector 3 through the wiring terminal 8, and then electrically connected to the control cabinet through the signal connector 3, so that the current and temperature signals of the transformer working are output to the control cabinet.

[0042] Furthermore, it also includes a voltage feedback connector 9, the input end of the voltage feedback connector 9 is connected to the positive and negative interfaces of the transformer output end through a cable, and the output end of the voltage feedback connector 9 is electrically connected to the control cabinet for feeding back the voltage signal of the transformer.

[0043] As a preferred implementation, the output end of the voltage feedback connector 9 is connected to the wiring terminal 8, and the voltage signal output by the transformer is fed back to the control cabinet through the wiring terminal 8.

[0044] Furthermore, the box body 1 further comprises a box cover 10 , which matches the box body 1 and is used to close the box body 1 , and a mounting hole 101 is provided on the box cover 10 .

[0045] Furthermore, a sealing gasket 11 is included, and the sealing gasket 11 is used to seal the box body 1 and the box cover 10.

[0046] As in the above structure, the sealing gasket 11 is placed between the box body 1 and the box cover 10, and then the box cover 10 is covered on the box body 1, and the box cover 10 is tightly combined with the box body 1 by screw fasteners. The material of the sealing gasket 11 is made of high temperature resistant and corrosion resistant rubber or plastic to ensure its adaptability and sealing.

[0047] Preferably, the power connector 2 and the signal connector 3 respectively match the shape and size of one of the multiple installation holes 101, and the power connector 2 and the signal connector 3 are connected to the cables in a plug-in manner.

[0048] Specifically, a circular mounting hole 101 is provided on each of the two adjacent sides of the box body 1, and a rectangular mounting hole 101 is provided on the other side. The power connector 2 is installed on the circular mounting hole 101 on one of the sides. The mounting end of the power connector 2 is cylindrical, and the size matches the circular mounting hole 101. It can be directly inserted into the circular mounting hole 101 and fixed by screws. Then, one end of the power connector 2 is connected to the power input cable placed inside the strong power area, and the other end is plugged into the power supply;

[0049] A circular mounting hole 101 is provided on the top surface of the box body 1, i.e., the box cover 10. The signal connector 3 is mounted on the box cover 10 through the circular mounting hole 101. The mounting end of the signal connector 3 is cylindrical, and its size matches the circular mounting hole 101. It can be directly inserted into the circular mounting hole 101 and fixed by screws. Then, one end of the signal connector 3 is connected to the wiring terminal 8 in the weak current area, and the other end is plugged into the input cable of the control cabinet.

[0050] Then, two cover plates 4 of matching shapes and sizes are used to block the unused mounting holes 101 .

[0051] Example 2

[0052] like Figure 3-4 As shown, the junction box used in the transformer of this embodiment is the same as that of Embodiment 1, except that:

[0053] The shape and size of the power connector 2 matches one of the multiple mounting holes 101, while the shape and size of the signal connector 3 do not match any of the multiple mounting holes 101, and the connecting cables of the power connector 2 and the signal connector 3 are both connected by bare wires.

[0054] Furthermore, it also includes a signal connector mounting plate 6, which is arranged between the signal connector 3 and the mounting hole 101 and is used to install and connect the signal connector 3 whose size does not match the mounting hole 101. Different types of signal connectors are equipped with different signal connector mounting plates 6.

[0055] As in the above structure, when the signal connector 3 does not match the mounting hole 101, a signal connector mounting plate 6 is required. After the signal connector 3 and the signal connector mounting plate 6 are assembled, the signal connector mounting plate 6 is installed and fixed on the box body 1 through the mounting hole 101, thereby completing the installation of the signal connector 3.

[0056] Specifically, a circular mounting hole 101 is provided on each of the two adjacent sides of the box body 1, and a rectangular mounting hole 101 is provided on the other side. The power connector 2 is installed on the circular mounting hole 101 on one of the sides. The mounting end of the power connector 2 is cylindrical, and the size matches the circular mounting hole 101. It can be directly inserted into the circular mounting hole 101 and fixed by screws. A through hole is provided in the middle of the power connector 2. The power input cable placed inside the strong power area passes through the through hole to directly connect to the power supply;

[0057] A circular mounting hole 101 is provided on the top surface of the box body 1, i.e., the box cover 10. The signal connector 3 is installed on the box cover 10 through the circular mounting hole 101. The size of the mounting end of the signal connector 3 is smaller than the circular mounting hole 101. The signal connector 3 is snap-fitted and assembled with the signal connector mounting plate 6. Then, the signal connector mounting plate 6 is fixedly mounted on the circular mounting hole 101 by screws. A through hole is provided in the middle of the signal connector 3. The signal output cable of the wiring terminal 8 in the weak current area passes through the through hole and is directly connected to the control cabinet.

[0058] Then, two cover plates 4 of matching shapes and sizes are used to block the unused mounting holes 101 .

[0059] Example 3

[0060] like Figure 5-6 As shown, the junction box used in the transformer of this embodiment is the same as that of Embodiment 2, except that:

[0061] The shapes and sizes of the power connector 2 and the signal connector 3 do not match those of the plurality of mounting holes 101 , and the power connector 2 and the signal connector 3 are connected to the cables by plugging.

[0062] Furthermore, it also includes a power joint mounting plate 5, which is arranged between the power joint 2 and the mounting hole 101, and is used to install and connect the power joint 2 whose size does not match the mounting hole 101. Different models of power joints are equipped with different power joint mounting plates 5.

[0063] As in the above structure, when the power connector 2 does not match the mounting hole 101, a power connector mounting plate 5 is required. After the power connector 2 and the power connector mounting plate 5 are assembled, the power connector mounting plate 5 is installed and fixed on the box body 1 through the mounting hole 101, thereby completing the installation of the power connector 2.

[0064] Specifically, a circular mounting hole 101 is provided on each of the two adjacent sides of the box body 1, and a rectangular mounting hole 101 is provided on the other side. The rectangular mounting hole 101 is a rounded rectangle with arc-shaped sides. The shape of the mounting end of the power connector 2 matches it. The power connector 2 is clamped in the rectangular mounting hole 101 from the inside of the bottom box 1 to the outside, and then the power connector 2 is pressed from the inside of the bottom box 1 with the power connector mounting plate 5 and fixed with screws. Then, one end of the power connector 2 is connected to the power input cable placed inside the strong power area, and the other end is plugged into the power supply.

[0065] A circular mounting hole 101 is provided on the top surface of the box body 1, i.e., the box cover 10. The signal connector 3 is mounted on the box cover 10 through the circular mounting hole 101. The size of the mounting end of the signal connector 3 is smaller than the circular mounting hole 101. The signal connector 3 is snap-fitted and assembled with the signal connector mounting plate 6. The signal connector mounting plate 6 is then fixedly mounted on the circular mounting hole 101 by screws. One end of the signal connector 3 is then connected to the wiring terminal 8 in the weak current area, and the other end is plugged into the input cable of the control cabinet.

[0066] Then, two cover plates 4 of matching shapes and sizes are used to block the unused mounting holes 101 .

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A junction box for a transformer, Features: It comprises a box body (1), a power connector (2), a signal connector (3) and a cover plate (4), wherein: The box body (1) is fixedly connected to the transformer, and a plurality of mounting holes (101) are provided on the box body (1), wherein the mounting holes (101) are distributed on different surfaces of the box body (1); The power connector (2) is fixedly connected to the box body (1) through one of the plurality of mounting holes (101); the input end of the power connector (2) is connected to a power cable, and the output end is connected to a transformer connection port; The signal connector (3) is fixedly connected to the box body (1) through one of the plurality of mounting holes (101); the signal connector (3) is used for connecting the input end to the transformer signal output line and for plugging the output end to the input cable of the control cabinet; The cover plate (4) is used to block other unused mounting holes (101).

2. A junction box for a transformer as claimed in claim 1, Features: The mounting holes (101) have different shapes and sizes and are used to mount power connectors and signal connectors of different models.

3. A junction box for a transformer as claimed in claim 2, Features: It also includes a power joint mounting plate (5) which is arranged between the power joint (2) and the mounting hole (101) and is used for mounting and connecting a power joint (2) whose size does not match that of the mounting hole (101). Power joints of different models are equipped with different power joint mounting plates (5).

4. A junction box for a transformer as claimed in claim 2, Features: It also includes a signal connector mounting plate (6) which is arranged between the signal connector (3) and the mounting hole (101) and is used for mounting and connecting a signal connector (3) whose size does not match that of the mounting hole (101). Different types of signal connectors are equipped with different signal connector mounting plates (6).

5. A junction box for a transformer as claimed in claim 2, Features: It also includes an insulating plate (7), which is connected to the inside of the box body (1) and is used to separate the inside of the box body (1) into a strong current area and a weak current area, so as to avoid interference between strong current and weak current cables.

6. A junction box for a transformer as claimed in claim 5, Features: A power input cable is placed inside the strong current area, one end of the power input cable is connected to the transformer, and the other end is connected to the power connector (2); a signal output cable is placed inside the weak current area, one end of the signal output cable is connected to the transformer, and the other end is connected to the signal connector (3).

7. A junction box for a transformer as claimed in claim 6, Features: It also includes a wiring terminal (8), which is connected to the transformer and is located in the weak current area on one side of the insulating plate (7) and is used to achieve electrical connection between the transformer and the signal connector (3).

8. A junction box for a transformer as claimed in claim 1, Features: It also includes a voltage feedback connector (9), the input end of the voltage feedback connector (9) is connected to the positive and negative electrode interfaces of the transformer output end through a cable, and the output end of the voltage feedback connector (9) is electrically connected to the control cabinet for feeding back the voltage signal of the transformer.

9. The junction box used for the transformer according to claim 1, Features: It also comprises a box cover (10), wherein the box cover (10) matches the box body (1) and is used to close the box body (1), and the box cover (10) is provided with the mounting hole (101).

10. A junction box for a transformer as claimed in claim 9, Features: It also comprises a sealing gasket (11), wherein the sealing gasket (11) is used to seal the box body (1) and the box cover (10).

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