Power connection terminal and fuse-type disconnect switch having the power connection terminal

Abstract

The present invention discloses an electrical connection terminal and a fuse-type disconnector having the electrical connection terminal, wherein the electrical connection terminal comprises an electrical connection seat, the electrical connection seat comprises a first electrical connection part and a second electrical connection part vertically connected to the first electrical connection part, the first electrical connection part has two clamping arms arranged opposite to each other, a clamping groove is formed between the two clamping arms, the second electrical connection part is an "E"-shaped sheet structure, which comprises a connecting part and three long strips arranged in intervals and parallel to each other, the same end of the three long strips is fixedly connected to the connecting part, the connecting part is vertically connected to the bottom end of the first electrical connection part, the three long strips are respectively a wiring part located in the middle and an insertion part located at both sides, a wiring frame is sleeved on the wiring part, and a crimping screw is screwed on the upper part of the wiring frame. With the structure of the present invention, the installation of the electrical connection terminal and the connection operation with the external wire are very convenient, which is conducive to improving work efficiency.

Description

Technical Field

[0001] The invention relates to an electrical connection terminal and a fuse-type disconnector with the electrical connection terminal, and belongs to the field of disconnector structure design. Background Art

[0002] The fuse-type disconnector is a simple and effective protective electrical appliance that is manually operated. It mainly plays the role of isolation or short-circuit protection in the circuit. The characteristic of the disconnector is that when in the separated position, the insulation distance between the moving and static contacts reaches a certain standard and has an obvious disconnection mark, and when closed, it can withstand the normal return circuit and abnormal condition current within a specific time. As shown in the patent document CN206471270U, ​​the existing fuse-type disconnector is usually fixed to the base with fixing screws when each contact holder (equivalent to the power terminal in this application) is installed during the assembly process. Each assembly of a fuse-type disconnector requires 12 fixing screws, and when the disconnector fuse group needs to be wired after installation, it is necessary to first connect the wiring nose to the end of the external wire, and then connect the wiring nose to the contact holder through the connecting bolt, resulting in relatively cumbersome wiring operations, which is not conducive to improving work efficiency. Summary of the Invention

[0003] In this regard, the present invention aims to provide a power terminal and a fuse-type disconnect switch having the power terminal. The power terminal has a reasonable structure. When assembling the fuse-type disconnect switch, the installation of the power terminal can eliminate the need for mounting screws, and the installation operation is relatively convenient. In addition, when wiring, there is no need to use a wiring nose to transitionally connect the power terminal and the external wire. The wiring operation is relatively convenient, which is conducive to improving work efficiency.

[0004] The technical solution for achieving the purpose of the present invention is:

[0005] A power terminal includes a power socket, the power socket includes a first power connection part and a second power connection part vertically connected to the first power connection part, the first power connection part has two oppositely arranged clamping arms, and a clamping groove is formed between the two clamping arms, and the second power connection part is an "E"-shaped sheet structure, which includes a connecting part and three long strips arranged at intervals and in parallel, the same end of the three long strips is fixedly connected to the connecting part, the connecting part is vertically connected to the bottom end of the first power connection part, and the three long strips are respectively located in the middle of the wiring part and the insertion part on both sides, the wiring part is sleeved with a wiring frame, and the upper part of the wiring frame is screwed with a wire pressing screw.

[0006] A fuse-type disconnect switch comprises a base, power terminals mounted at both ends of the base, and a cover mounted on the base to cover the power terminals. The power terminals are the power terminals described above. The base has a storage space suitable for mounting the wiring frame. The bottom of the storage space has two oppositely arranged transverse slots. The wiring frame is arranged in the storage space. The two plug-in portions are correspondingly plugged into the two transverse slots and are limited by a limiting structure to prevent the plug-in portions from withdrawing from the transverse slots.

[0007] In the above technical solution, the limiting structure includes a resisting portion formed on the cover body, and when the inserting portion and the transverse slot are plugged into place, the resisting portion abuts against the power socket.

[0008] In the above technical solution, the number of the cover body is one, and both ends of the cover body are respectively provided with covering parts for covering the electrical terminals at both ends of the base, and the blocking part is formed on the covering part.

[0009] In the above technical solution, both ends of the base are provided with first clamping parts, and both covering parts are provided with second clamping parts that are clamped and matched with the corresponding first clamping parts.

[0010] In the above technical solution, one of the first clamping portion and the second clamping portion is a clamping platform, and the other is a clamping hole.

[0011] The present invention has positive effects: the structure of the power terminal and the fuse type disconnector with the power terminal is reasonable. When assembling the fuse type disconnector, the wiring frame is first assembled from top to bottom (i.e. Figure 5 Insert it into the accommodation space, and then insert the power socket from the inside to the outside (i.e. Figure 8 During installation, the wiring part is inserted into the wiring frame, and the two plug-in parts are plugged into the corresponding horizontal slots on the base and limited by the limiting structure to prevent the power terminal from loosening, thereby completing the installation of the power terminal. The installation of the power terminal does not require the use of mounting screws, making the assembly operation relatively convenient. In addition, when the fuse-type disconnect switch is connected to the external wire, there is no need to use a wiring nose to transition the connection between the power terminal and the external wire. The external wire end is directly inserted into the wiring frame and the external wire end is pressed against the wiring part by rotating the wire pressing screw to complete the wiring. The wiring operation is also more convenient, which is conducive to improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A three-dimensional diagram of the power terminal of the present invention;

[0013] Figure 2 for Figure 1 Schematic diagram of the structure of the intermediate connection socket;

[0014] Figure 3 Schematic diagram of the structure of the fuse type disconnector in the present invention;

[0015] Figure 4 for Figure 3 The top view of the fuse disconnector with some parts removed is shown in the figure;

[0016] Figure 5 For the Figure 4 Sectional view taken along line AA;

[0017] Figure 6 For the Figure 4 Cross-sectional view cut along the midline BB;

[0018] Figure 7 A perspective view of a base with electrical terminals installed;

[0019] Figure 8 Schematic diagram of the structure of the base in the present invention;

[0020] Figure 9 It is a structural schematic diagram of the cover body in the present invention.

[0021] The reference numerals shown in the figure are: 1-power socket; 2-first power connection part; 3-second power connection part; 31-connecting part; 32-wiring part; 33-insertion part; 4-clamping arm; 5-clamping groove; 6-wiring frame; 7-pressing screw; 8-base; 80-accommodating space; 81-lateral slot; 9-cover body; 91-blocking part; 92-covering part; 10-card platform; 11-card hole; 12-fixing buckle; 13-elastic buckle. DETAILED DESCRIPTION

[0022] The specific structure of the present invention is described below with reference to the accompanying drawings:

[0023] Example 1

[0024] An electrical terminal, such as Figure 1 and Figure 2As shown, it includes an electrical connection socket 1, which includes a first electrical connection part 2 and a second electrical connection part 3 vertically connected to the first electrical connection part 2, the first electrical connection part 2 has two oppositely arranged clamping arms 4, and a clamping groove 5 is formed between the two clamping arms 4, and the second electrical connection part 3 is an "E"-shaped sheet structure, which includes a connecting part 31 and three long strips arranged at intervals and in parallel, and the same end of the three long strips is fixedly connected to the connecting part 31, and the connecting part 31 is vertically connected to the bottom end of the first electrical connection part. The three long strips are respectively a wiring part 32 located in the middle and an insertion part 33 located on both sides, and a wiring frame 6 is sleeved on the wiring part 32, and a wire pressing screw 7 is screwed on the upper part of the wiring frame 6; the structure of the electrical terminal is reasonable, and its installation and connection with the external wire are relatively convenient.

[0025] Example 2

[0026] A fuse-type disconnect switch, see Figures 3 to 8 As shown, it includes a base 8, power terminals installed at both ends of the base 8, and a cover 9 installed on the base 8 to cover the power terminals. The power terminals adopt the power terminals described in Example 1. The base 8 has a storage space 80 suitable for installing the wiring frame 6. The bottom of the storage space 80 has two oppositely arranged transverse slots 81. The wiring frame 6 is arranged in the storage space 80. The two plug-in parts 33 are correspondingly inserted in the two transverse slots 81 and are limited by a limiting structure to prevent the plug-in parts 33 from withdrawing from the transverse slots 81. The power terminals in this embodiment and the fuse-type disconnector with the power terminals are reasonable in structure. When assembling the fuse-type disconnector, first install the wiring frame 6 from top to bottom (i.e. Figure 5 Insert it into the accommodating space 80, and then insert the power socket 1 into the base 8 from the inside to the outside (i.e. Figure 8 When installing, the wiring part 32 is inserted into the wiring frame 6, and the two plug-in parts 33 are plugged into the corresponding transverse slots 81 on the base 8 and limited by the limiting structure to prevent the power terminal from loosening, thereby completing the installation of the power terminal. The installation of the power terminal does not require the use of mounting screws, making the installation operation relatively convenient. In addition, when the fuse-type disconnector is connected to the external wire, there is no need to use a wiring nose to transition the connection between the power terminal and the external wire. The wire end of the external wire is directly inserted into the wiring frame 6 and the wire pressing screw 7 is screwed (a perforation is provided on the cover body 9 at a position corresponding to the wire pressing screw, and the tool is inserted through the perforation to screw the wire pressing screw 7) to press the wire end of the external wire onto the wiring part 32 to complete the wiring. The wiring operation is also more convenient, which is conducive to improving work efficiency.

[0027] In this embodiment, the limiting structure includes a stopper 91 formed on the cover body 9. When the insertion part 33 is inserted into the transverse slot 81, the stopper 91 abuts against the power socket 1 to prevent the insertion part 33 from withdrawing from the transverse slot 81, thereby ensuring the stability of the installation of the power terminal. In practical operation, the limiting structure can also adopt the following structure: the limiting structure includes an elastic hook formed on the inner wall of the transverse slot 81 and a card slot formed on the insertion part 33. The insertion part 33 is inserted into the transverse slot 81 to ensure the stability of the installation of the power terminal through the elastic hook and the card slot; or the limiting structure is an elastic boss formed on the inner side of the base. When the insertion part 33 is inserted into the transverse slot 81, the elastic boss is compressed downward. When the insertion part 33 is inserted into the transverse slot 81, the elastic boss is reset and bounced upward, and its end abuts against the power socket to prevent the power socket 1 from loosening.

[0028] See Figure 9 As shown, the number of the cover body 9 is one, and the two ends of the cover body 9 are respectively provided with a cover part 92 for covering the electrical terminals at both ends of the base 8, and the blocking part 91 is formed on the cover part 92. By providing two cover parts 92 on an integral cover body 9, only one injection mold is needed to produce the required cover body during production, and the operation is relatively convenient when assembling it on the base 8.

[0029] In this embodiment, the two ends of the base 8 are provided with a first clamping part, and the two covering parts 92 are provided with a second clamping part that is clamped and matched with the corresponding first clamping part. Specifically, one of the first clamping part and the second clamping part is a clamping platform 10, and the other is a clamping hole 11; the cover body 9 is fixed to the base by cooperating with the first clamping part and the second clamping part, without the need for screws.

[0030] In this embodiment, the bottom of the base 8 is provided with a fixed clip 12 and an elastic clip 13 arranged opposite to each other. The fixed clip 12 and the elastic clip 13 are respectively engaged with the two side edges of the pre-installed 35mm standard guide rail to install the fuse type disconnector on the guide rail.

[0031] Obviously, the above embodiments of the present invention are merely examples for the purpose of illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all embodiments here. However, obvious variations or modifications arising from the essence of the present invention remain within the scope of protection of the present invention.

Claims

1. A fuse-type disconnector, comprising a base (8), power terminals mounted at both ends of the base (8), and a cover (9) mounted on the base (8) to cover the power terminals, characterized in that: The power connection terminal comprises a power connection seat (1), the power connection seat (1) comprises a first power connection part (2) and a second power connection part (3) vertically connected to the first power connection part (2), the first power connection part (2) comprises two clamping arms (4) arranged opposite to each other, a clamping groove (5) is formed between the two clamping arms (4), the second power connection part (3) is an "E"-shaped sheet structure, comprising a connecting part (31) and three long strips arranged in parallel and at intervals, the same end of the three long strips is fixedly connected to the connecting part (31), the connecting part (31) is vertically connected to the bottom end of the first power connection part (2), the three long strips are respectively a wiring part (32) located in the middle and an insertion part (33) located on both sides, the wiring part (32) is sleeved with a wiring frame (6), the upper part of the wiring frame (6) is screwed with a wire crimping screw (7); the base (8) has a receiving space (80) suitable for installing the wiring frame (6), in the receiving space (8 0) has two oppositely arranged transverse slots (81), the wiring frame (6) is arranged in the accommodating space (80), the two inserting parts (33) are correspondingly inserted in the two transverse slots (81) and are limited by a limiting structure to prevent the inserting parts (33) from withdrawing from the transverse slots (81); the wiring frame (6) is first inserted into the accommodating space (80) from top to bottom, and then the power socket (1) is moved from the inside to the outside in the base (8) for installation. During installation, the wiring portion (32) is inserted into the wiring frame (6), and the two plug-in portions (33) are plugged into corresponding transverse slots (81) on the base (8) and are limited by a limiting structure to prevent the power terminals from loosening, thereby completing the installation of the power terminals; the limiting structure includes a stopper (91) formed on the cover body (9), and when the plug-in portion (33) and the transverse slot (81) are plugged into place, the stopper (91) abuts against the power socket (1).

2. The fuse-type disconnect switch according to claim 1, characterized in that: The number of the cover body (9) is one, and both ends of the cover body (9) are respectively provided with a covering portion (92) for covering the electrical terminals at both ends of the base (8), and the blocking portion (91) is formed on the covering portion (92).

3. The fuse-type disconnector according to claim 2, characterized in that: The base (8) is provided with a first clamping portion at both ends, and the two covering portions (92) are provided with a second clamping portion that is clamped and matched with the corresponding first clamping portion.

4. The fuse-type disconnector according to claim 3, characterized in that: One of the first clamping portion and the second clamping portion is a clamping platform (10), and the other is a clamping hole (11).

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