Wiring terminal structure and electrical equipment

Abstract

The utility model discloses a wiring terminal structure and electrical equipment, the wiring terminal structure comprises a terminal body and a box body, the terminal body is attached to one side wall of the box body and comprises a first conductive area and a second conductive area which are in conductive connection, the first conductive area is connected with an external cable through a first fastener, and the second conductive area is connected with an external cable through a second fastener. And the second conductive area is connected with a built-in cable penetrating into the box body through a second fastener. According to the wiring terminal structure, the terminal body is arranged on the outer wall of the box body, and only the built-in cable fixedly connected with the second conductive area extends into the box body, so that the terminal body is prevented from occupying the internal space of the box body, the structural arrangement freedom degree in the box body is improved, meanwhile, the size of the wiring terminal structure is reduced, and the universality degree of the wiring terminal structure is improved.

Description

Technical Field

[0001] This application relates to the field of power electronic equipment technology, and in particular to a terminal block structure and electrical equipment. Background Technology

[0002] Terminal blocks are widely used between various electrical devices and are an accessory product used to achieve electrical connections. For commonly used through-wall terminals, they need to be partially inserted into the chassis for electrical connection. This structure occupies internal space of the chassis, making the installation and wiring of electrical components inside the chassis more difficult.

[0003] Therefore, how to reduce the impact of through-wall terminals on the component layout and wiring arrangement inside the chassis is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a terminal block structure and electrical equipment to reduce the impact of through-wall terminals on the component arrangement and wiring layout inside the chassis.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A terminal block structure, comprising:

[0007] The terminal body and the housing are provided. The terminal body is attached to one side wall of the housing and includes a first conductive area and a second conductive area that are connected in a conductive manner. The first conductive area is connected to an external cable through a first fastener, and the second conductive area is connected to an internal cable that passes through the housing through a second fastener.

[0008] Preferably, the above-described terminal block structure further includes a circuit board, which is disposed between the contact wall of the terminal body and the housing. The circuit board is equipped with an electromagnetic shielding circuit and has a fixing hole for at least one of the first fastener and the second fastener to pass through for fixing.

[0009] Preferably, in the above-described terminal block structure, the first fastener and the second fastener are a double-ended stud with an integral structure; the double-ended stud passes through the fixing hole and the wall of the terminal body, and fixes the external cable and the internal cable through the connection structure at both ends.

[0010] Preferably, in the above-mentioned terminal block structure, a temperature detection circuit is integrated on the circuit board, and a temperature detection device is fixedly installed thereon. The individual temperature detection device is located near the individual fixing hole or at the midpoint of two adjacent fixing holes.

[0011] Preferably, in the above-described terminal block structure, the second conductive area is disposed on the connecting wall of the terminal body, the connecting wall is in contact with the housing, and the second conductive area is flush with or recessed within the connecting wall.

[0012] Preferably, the above-described terminal block structure further includes a protective box, the terminal body is disposed inside the protective box, and the internal cable passes through the protective box and the side wall of the enclosure to enter the interior of the enclosure.

[0013] Preferably, in the above-mentioned terminal block structure, the protective box and the housing are fixed by a plurality of connectors, and a sealing gasket is provided between the protective box and the housing, wherein the projection of each connector on the sealing gasket is within the coverage area of ​​the sealing gasket.

[0014] Preferably, in the above-mentioned terminal block structure, a recess is provided on the outer wall of the protective box, and the sealing gasket is entirely located within the recess.

[0015] Preferably, in the above-mentioned terminal block structure, the first conductive area and the second conductive area are different walls of a single conductor structure, and the external cable and the internal cable are arranged perpendicularly.

[0016] Preferably, in the above-mentioned terminal block structure, the first conductive area and the second conductive area are respectively arranged in a rectangular array structure, and the number of rows and columns of the first conductive area and the second conductive area are not less than 2.

[0017] Preferably, in the above-described terminal block structure, the connection area between the internal cable and the second conductive area is potted with adhesive.

[0018] An electrical device comprising the terminal block structure described in any of the above embodiments.

[0019] As can be seen from the above technical solution, the terminal block structure provided in this application has the terminal body fitted against one side wall of the enclosure. The terminal body includes a first conductive area and a second conductive area that are connected in a conductive manner, so as to maintain the electrical connection of the cables by connecting the first conductive area and the second conductive area respectively. Furthermore, the first conductive area is connected to external cables extending away from the enclosure via a first fastener, while the second conductive area is connected to internal cables passing through the enclosure via a second fastener. The opening in the side wall of the enclosure only allows internal cables to pass through. The terminal body is located entirely outside the enclosure and does not occupy the wiring and component layout space inside the enclosure. This not only allows for more flexible electrical component placement space inside the enclosure, but also reduces the volume of the terminal block structure by fitting the terminal body to the enclosure, thus improving the structural applicability of the terminal block structure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an exploded view of the terminal block structure components provided in this disclosure;

[0022] Figure 2 for Figure 1 Assembly diagram;

[0023] Figure 3 This is a schematic diagram of the terminal body.

[0024] Figure 4 for Figure 3 Bottom diagram;

[0025] Figure 5 This is a schematic diagram of the connection structure between the terminal body and the external cable.

[0026] Figure 6 This is a schematic diagram of the connection structure between the terminal body and the internal cable.

[0027] Figure 7 This is an exploded view of the structure surrounding the terminal body;

[0028] Figure 8 This is a schematic diagram of a double-ended stud.

[0029] Figure 9 This is a schematic diagram of the assembly structure of the terminal body and the circuit board;

[0030] Figure 10 A detailed view of the circuit board area;

[0031] Figure 11 This is a schematic diagram of the assembly structure of the sealing gasket and the box body;

[0032] Figure 12 A schematic diagram of a structure in which multiple sets of conductive areas are provided on the terminal body;

[0033] Figure 13 This is a front view of the terminal body of the conductive area structure with a rectangular array structure.

[0034] Among them, 10-terminal body; 110-first conductive area; 120-second conductive area; 130-connecting wall; 20-box; 310-external cable; 320-internal cable; 330-double-ended stud; 40-circuit board; 410-temperature detection device; 50-protective box; 510-connector; 520-recess; 60-sealing gasket. Detailed Implementation

[0035] The core of this application is to disclose a terminal block structure and electrical equipment to reduce the impact of through-wall terminals on the component arrangement and wiring layout inside the chassis.

[0036] To enable those skilled in the art to better understand the present application, embodiments of the present application will be described below with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the utility model described in the claims. Additionally, the complete content of the structures represented in the following embodiments is not limited to those necessary for the solution of the utility model described in the claims.

[0037] like Figure 1 , Figure 2 and Figure 7 As shown, this disclosure provides a terminal block structure, which mainly includes a terminal body 10 and a housing 20. The terminal body 10 is fitted against one side wall of the housing 20 to ensure structural compactness and provide a structural foundation for convenient subsequent wiring. Figure 3 and Figure 4 As shown, the terminal body 10 is provided with a first conductive area 110 and a second conductive area 120. The first conductive area 110 and the second conductive area 120 are electrically connected so that different cables can be connected through the two conductive areas and a stable electrical connection between the cables on both sides can be maintained.

[0038] Based on this, such as Figure 5 and Figure 6As shown, the first conductive area 110 is connected to the external cable 310 via a first fastener. The external cable 310 is located outside the housing 20 to connect to external devices. The second conductive area 120 is connected to the internal cable 320 via a second fastener. The internal cable 320 passes through an opening on the side wall of the housing 20 to enter the housing 20 for wiring inside the housing 20. The terminal body 10 of the above structure is entirely located outside the housing 20 and does not occupy the internal space of the housing 20. It only passes through the side wall of the housing 20 via the internal cable 320 to make electrical connections with other electrical components inside the housing 20. The conductive connection of the first conductive area 110 and the second conductive area 120 realizes an effective electrical connection between the internal and external cables, enabling smooth energy or signal exchange between the internal and external circuits of the electrical equipment. It should be noted that the first and second fasteners are made of metals with good conductivity, such as iron or copper, to ensure a stable electrical connection between the cables they fix and the conductive areas on the terminal body 10.

[0039] Furthermore, in order to ensure that all terminal bodies 10 located outside the housing 20 can maintain a stable operating state, in some embodiments of this disclosure, the terminal structure also includes a circuit board 40. Specifically, the circuit board 40 is equipped with an electromagnetic shielding circuit. In order to maintain the compactness of the terminal structure and reduce the effective path of the electromagnetic shielding circuit, the circuit board 40 is disposed between the contact wall surfaces of the terminal body 10 and the housing 20 to make full use of the space. Electromagnetic shielding circuits can effectively shield external electromagnetic interference to ensure the stable operation of terminal block structures in complex electromagnetic environments, improve the reliability and anti-interference capabilities of electrical equipment, and compared with the existing technology of setting up electromagnetic shielding boards and connecting each phase copper busbar of the terminals with cables, the circuit board 40 in this disclosure is fixed by one or more of the first and second fasteners passing through it. This allows the electromagnetic shielding circuit and the terminal body 10 to be electrically connected without the need for cable connection, only through the conduction effect of the first and second fasteners. This not only saves cable usage and reduces the cost of the terminal block structure, but also has a shorter connection path between the electromagnetic shielding circuit and the terminal body 10, thereby improving the electromagnetic shielding effect of the electromagnetic shielding circuit.

[0040] Furthermore, in the embodiments of this disclosure, the first fastener and the second fastener can be independently configured bolt structures, and the external cable 310 and the internal cable 320 have independent assembly structures, thus enabling more convenient independent inspection, disassembly, and repair of the external cable 310 and the internal cable 320. In some embodiments of this disclosure, to improve structural compactness and reduce the number of components, such as... Figure 7 and Figure 8As shown, the first fastener and the second fastener are a double-ended stud 330 with an integral structure. Both ends of the double-ended stud 330 in the axial direction can serve as connection structures. At the same time, the double-ended stud 330 is set through the wall of the terminal body 10 so that its two ends can pass through the first conductive area 110 and the second conductive area 120 respectively, and thus achieve fixed connection with the external cable 310 and the internal cable 320 respectively.

[0041] It should be noted that external cables 310 and internal cables 320 are typically arranged in multiple groups, and each group of cables requires a double-ended stud 330 for fixation. Furthermore, the circuit board 40 has one or more fixing holes for the double-ended studs 330 to pass through. The circuit board 40, fixed by the double-ended studs 330, can achieve electrical connection with the first conductive area 110 and the second conductive area 120 of the terminal body 10 through the conductive material of the double-ended studs 330. This achieves electromagnetic shielding of the terminal body 10 without the need for cables, thus improving the electromagnetic shielding effect of the terminal body 10. The structure of the double-ended studs 330 also improves the docking accuracy of the grouped external cables 310 and internal cables 320, as they share the same positioning reference and have a more precise installation position, thereby improving the stability of their electrical connection.

[0042] Furthermore, in existing wall-penetrating terminal structures, the contact points between cables and terminals experience high temperatures during operation, posing a risk of burning out internal and external AC output cables and terminals. Common temperature detection methods involve creating a threaded hole in the plastic substrate of the AC output terminal to secure a temperature sensing device, which cannot directly and accurately capture the temperature of the contact copper busbar. To improve the operational safety of the terminal block structure, in some embodiments of this disclosure, such as... Figure 9 and Figure 10 As shown, a temperature detection circuit is integrated on the circuit board 40, and a temperature detection device 410 is fixedly mounted on the circuit board 40. The temperature detection device 410 is used to detect the temperature value at its set position and transmit the feedback through the temperature detection circuit. Based on this, the double-ended stud 330 needs to be made of a metal material with good thermal and electrical conductivity, such as iron, copper, or aluminum, to ensure a stable electrical connection between the fixed cable and the conductive area on the terminal body 10 as described in the previous embodiment, while also enabling rapid heat transfer at the contact point between the cable and the conductive area on the terminal body 10, thereby improving the temperature detection accuracy of the temperature detection device 410.

[0043] Based on the above embodiments, one or more temperature detection devices 410 can be installed on the circuit board 40 to detect the temperature at different locations. If the temperature value detected by any temperature detection device 410 exceeds the preset safe operating temperature, an abnormality message will be fed back. Furthermore, a single temperature detection device 410 needs to be positioned close to a suitable location for temperature measurement. As mentioned earlier, the hazardous operating area of ​​the terminal block structure is the overlap between the cable and the terminal. Therefore, a single temperature detection device 410 can be positioned close to a single fixing hole. The specific placement is determined by the designer based on the effective detection range of the temperature detection device 410 under different operating conditions, ensuring that the temperature detection device 410 can detect the fixing hole position of the double-ended stud 330. Alternatively, a single temperature detection device 410 can be positioned at the midpoint between two adjacent fixing holes to simultaneously detect the cable operation at both fixing hole positions and provide feedback when a temperature abnormality occurs at either fixing hole position.

[0044] It should be noted that the abnormal information fed back by the temperature detection device 410 can be transmitted to the controller, which can then issue audible, visual, or digital alarm signals, allowing the feedback personnel to make timely judgments and repairs; at the same time, the controller can also directly cut off the operating circuit to avoid the risk of burning of the terminal structure.

[0045] Furthermore, in the terminal block structure provided in this disclosure, one side wall of the terminal body 10 is a connecting wall 130 for connecting to the side wall of the housing 20, and the second conductive area 120 is disposed on the connecting wall 130 so as to connect with the internal cable 320 disposed in the housing 20 via the shortest path. It should also be noted that the second conductive area 120 can be flush with the connecting wall 130, which simplifies the manufacturing structure, and in this case, the connection structure between the internal cable 320 and the second conductive area 120 is entirely placed inside the housing 20; in other embodiments, the second conductive area 120 is recessed in the connecting wall 130 so that there is a certain gap between the second conductive area 120 and the side wall of the housing 20. In this case, the connection structure between the internal cable 320 and the second conductive area 120 is only partially located inside the housing 20, or is completely located in the recessed area and entirely outside the housing 20, so as to further reduce the occupation of the wiring area on the internal space of the housing 20 and improve the freedom of setting the electrical components inside the housing 20.

[0046] Furthermore, in some embodiments of this disclosure, in order to effectively protect the terminal body 10 and avoid the risk of impact that may exist if the terminal body 10 is directly disposed on the side wall of the housing 20, the terminal structure also includes a protective box 50. The terminal body 10 is disposed inside the protective box 50, and the protective box 50 is fixedly disposed on the side wall of the housing 20. The protective box 50 also has an opening to form a channel structure with the side wall of the housing 20. Correspondingly, the external cable 310 is connected to the first conductive area 110 inside the protective box 50 and is arranged inside the protective box 50 before extending out. The internal cable 320 passes through the protective box 50 and the side wall of the housing 20 and enters the housing 20 for electrical connection.

[0047] To further optimize the above technical solution, the protective box 50 and the housing 20 are fixed by several connectors 510 to provide a stable support structure for the terminal body 10. Meanwhile, as... Figure 1 and Figure 11 As shown, a sealing gasket 60 is provided between the protective box 50 and the housing 20. It should be noted that for the connecting parts 510 of the protective box 50 and the housing 20, the projection of each connecting part 510 on the sealing gasket 60 is within the coverage area of ​​the sealing gasket 60. That is, for a single connecting part 510, its circumference is covered by the sealing gasket 60. This can prevent external gas or liquid from entering the protective box 50 through the through holes of the connecting parts 510 in the outer area, while preventing gas or liquid from communicating between the protective box 50 and the housing 20 through the through holes of the connecting parts 510 in the inner area, thereby achieving independent sealing protection for the protective box 50 and the housing 20.

[0048] It should be noted that multiple sealing gaskets 60 can be provided, and each connector 510 is located in the area between two adjacent sealing gaskets 60. The two adjacent sealing gaskets 60 can respectively seal and protect the inside and outside of the through hole of the connector 510, thus ensuring an effective seal between the housing 20 and the protective box 50.

[0049] Furthermore, the sealing gasket 60 achieves its sealing effect through the compression between the protective box 50 and the side wall of the housing 20. To prevent the sealing gasket 60 from failing due to overpressure, in some embodiments of this disclosure, a recess 520 is also provided on the outer wall of the protective box 50. The recess 520 is recessed away from the side wall of the housing 20, and the area of ​​the recess 520 is not less than that of the sealing gasket 60. The sealing gasket 60 is entirely disposed within the recess 520. At the same time, the thickness of the sealing gasket 60 under no external force is greater than the depth of the recess 520. The recess 520 not only provides a certain positioning structure for the sealing gasket 60, but also provides a certain compression space for the sealing gasket 60, thereby reducing the risk of overpressure failure of the sealing gasket 60.

[0050] To improve the regularity of the terminal block structure and enhance the aesthetics of cable arrangement, in some embodiments of this disclosure, the first conductive area 110 and the second conductive area 120 are different walls of a single conductor structure, providing stable conductivity and thermal conductivity. This provides a structural basis for the connection of external cables 310 and internal cables 320. Simultaneously, the external cables 310 and internal cables 320 are arranged perpendicularly. When the internal cables 320 enter the housing 20 with a structure perpendicular to the side wall of the housing 20, the external cables 310 extend parallel to the side wall of the housing 20 and connect to the external structure. This structure reduces the space occupied by the terminal block structure, allowing the terminal body 10, which is entirely located outside the housing 20, to occupy less external space, making the terminal block structure suitable for more space-constrained design conditions.

[0051] It should also be noted that, as Figure 12 and Figure 13 As shown, the first conductive area 110 and the second conductive area 120 can be set up with a rectangular array structure, so that the internal cable 320 and the external cable 310 have a more regular line arrangement structure; and the first conductive area 110 and the second conductive area 120 can be set up in a single row, or multiple rows can be set up according to the wiring needs, so as to achieve effective output of multi-layer cables.

[0052] Furthermore, in some embodiments of this disclosure, in order to improve the connection stability between the internal cable 320 and the second conductive area 120, the connection area between the internal cable 320 and the second conductive area 120 is potted after welding or crimping to maintain its electrical connection effect and sealing performance. It should also be noted that the circuit board 40, which is equipped with an electromagnetic shielding circuit, a temperature detection circuit, and a temperature detection device 410, can also be potted into an integrated structure with the terminal body 10.

[0053] Furthermore, this disclosure also provides an electrical device that includes the terminal block structure provided in any of the above embodiments. It should be noted that since the terminal block structure has the technical effects provided in any of the above embodiments, the electrical device also has the above technical effects, which will not be repeated here.

[0054] The terms "first," "second," "left side," and "right side," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may not be defined in the listed steps or units, but may include steps or units not listed.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A terminal block structure, characterized in that, include: Terminal body (10) and housing (20). The terminal body (10) is attached to one side wall of the housing (20) and includes a first conductive area (110) and a second conductive area (120) that are connected in a conductive manner. The first conductive area (110) is connected to an external cable (310) through a first fastener, and the second conductive area (120) is connected to an internal cable (320) that passes through the housing (20) through a second fastener.

2. The terminal block structure as described in claim 1, characterized in that, It also includes a circuit board (40), which is disposed between the contact wall of the terminal body (10) and the housing (20). The circuit board (40) is equipped with an electromagnetic shielding circuit, and the circuit board (40) has a fixing hole for at least one of the first fastener and the second fastener to pass through for fixing.

3. The terminal block structure as described in claim 2, characterized in that, The first fastener and the second fastener are a double-ended stud (330) with an integral structure; the double-ended stud (330) passes through the fixing hole and the wall of the terminal body (10), and fixes the external cable (310) and the internal cable (320) through the connection structure at both ends.

4. The terminal block structure as described in claim 2, characterized in that, A temperature detection circuit is integrated on the circuit board (40), and a temperature detection device (410) is fixedly installed thereon. Each temperature detection device (410) is located close to a single fixed hole or at the midpoint of two adjacent fixed holes.

5. The terminal block structure as described in claim 1, characterized in that, The second conductive area (120) is disposed on the connecting wall (130) of the terminal body (10), the connecting wall (130) is in contact with the housing (20), and the second conductive area (120) is flush with or recessed in the connecting wall (130).

6. The terminal block structure as described in claim 1, characterized in that, It also includes a protective box (50), the terminal body (10) is disposed inside the protective box (50), and the internal cable (320) passes through the protective box (50) and the side wall of the enclosure (20) to enter the interior of the enclosure (20).

7. The terminal block structure as described in claim 6, characterized in that, The protective box (50) and the housing (20) are fixed by a number of connectors (510), and a sealing gasket (60) is provided between the protective box (50) and the housing (20). The projection of each connector (510) on the sealing gasket (60) is within the coverage area of ​​the sealing gasket (60).

8. The terminal block structure as described in claim 7, characterized in that, The outer wall of the protective box (50) is provided with a recess (520), and the sealing gasket (60) is entirely located in the recess (520).

9. The terminal block structure as described in claim 1, characterized in that, The first conductive area (110) and the second conductive area (120) are different walls of a single conductor structure, and the external cable (310) and the internal cable (320) are arranged perpendicularly.

10. The terminal block structure as described in claim 1, characterized in that, The first conductive area (110) and the second conductive area (120) are respectively arranged in a rectangular array structure, and the number of rows and columns of the first conductive area (110) and the second conductive area (120) are not less than 2.

11. The terminal block structure as described in claim 1, characterized in that, The connection area between the internal cable (320) and the second conductive area (120) is encapsulated with glue.

12. An electrical device, characterized in that, Includes the terminal block structure as described in any one of claims 1-11.

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