Fuse type disconnecting switch

Abstract

The utility model provides a fuse type disconnecting switch, which comprises a conductive busbar provided with a T-shaped groove extending along the length direction of the conductive busbar and first openings positioned at two ends of the length direction of the T-shaped groove, and the T-shaped groove is provided with a second opening facing a switch base; the current-conducting plate is fixed on the switch base, and a first through hole corresponding to the second opening is formed in the current-conducting plate; according to the bolt and nut assembly, the head of the bolt can be inserted from the first opening and movably installed in the T-shaped groove, the head can abut against the inner side faces of the check blocks on the two sides of the second opening, and the rod portion of the bolt penetrates through the second opening and the first penetrating hole and then is connected with the nut. A straight slot or a cross slot for inserting a screwdriver is formed in one surface, far away from the head part, of the rod part. Compared with the prior art, the device is more convenient for a user to use, and meets the installation requirements of different positions of the user.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a fuse type isolating switch. Background Art

[0002] Isolating switches are usually used in conjunction with fuses. They have the two functions of "load disconnection" and "isolation". Fuses can be added to each pole for "overload and short-circuit protection", making full use of the protection characteristic curve of the fuse to protect cables and equipment in the line, and providing obvious disconnection points during maintenance to ensure the personal safety of workers.

[0003] The existing fuse-type disconnector is generally fixed on the copper busbar by bolts, and the installer needs to punch holes in the copper busbar in advance, which is time-consuming and laborious to install. In addition, since the installation position of the fuse-type disconnector is fixed, if the installation position needs to be adjusted, it is necessary to punch holes in the copper busbar again, which is inconvenient for users. Utility Model Content

[0004] To this end, the utility model provides a fuse-type disconnector, comprising a conductive busbar having a T-shaped slot extending along its length direction, and first openings located at both ends of the T-shaped slot in the length direction, the T-shaped slot having a second opening facing the switch base; a conductive plate fixed on the switch base, formed with a first through-hole arranged corresponding to the second opening; a bolt and nut assembly arranged on the conductive plate, the head of the bolt can be inserted from the first opening and movably installed in the T-shaped slot, the head can be abutted against the inner side surfaces of the blocks on both sides of the second opening, the rod of the bolt is connected to the nut after passing through the second opening and the first through-hole, and a side of the rod away from the head is formed with a slot or a cross slot for inserting a screwdriver.

[0005] The head of the bolt has a use state in which it is fixed to the conductive busbar, and a disassembly state in which it is removed from the second opening.

[0006] The cross section of the head is a rectangle, the short side of the rectangle is smaller than the second opening, and the long side is larger than the second opening.

[0007] The switch base is formed with a second through hole suitable for exposing the slot or the cross slot.

[0008] The switch base has a plurality of groups of first and second stationary contacts arranged up and down and respectively connected to the two ends of the fuse core. The second stationary contacts are fixed to the conductive plate by rivets or screws.

[0009] The first stationary contact and the second stationary contact both include a wiring board and two elastic arms arranged on the wiring board.

[0010] The technical solution of the utility model has the following advantages:

[0011] 1. The fuse-type disconnector provided by the utility model, when assembling, insert the bolt head on the switch base into the T-slot from the first opening of the conductive busbar, and move it along the T-slot to the desired position, then insert a screwdriver into the slot or cross slot of the bolt rod and tighten it, so that the bolt head abuts against the inner side surfaces of the blocks on both sides of the second opening of the T-slot, thereby fixing the conductive plate and the conductive busbar. Compared with the prior art, this is more convenient for users to use and meets the installation requirements of users in different positions.

[0012] 2. The fuse-type isolating switch provided by the utility model has a bolt head which has a use state fixed to the conductive busbar and a disassembly state where the switch base is removed from the second opening. In this way, the switch base does not need to be moved to the first openings at both ends of the conductive busbar to be removed, which is more convenient for users to quickly disassemble and assemble.

[0013] 3. The fuse-type isolating switch provided by the utility model has a cross-section of a bolt head that is a rectangle, wherein the short side of the rectangle is smaller than the second opening, and the long side is larger than the second opening. When in use, the long side of the bolt head abuts against the inner side surfaces of the blocks on both sides of the second opening. When disassembling, the bolt head is rotated so that its short side is moved out of the second opening, so that disassembly and assembly are quick and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a fuse type isolating switch of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0017] Figure 3 It is a schematic diagram of the assembly of the switch base and the conductive busbar;

[0018] Figure 4 It is a schematic diagram of the assembly of the second static contact and the conductive busbar;

[0019] Figure 5 It is a schematic diagram of the explosion structure of the second static contact and the conductive busbar.

[0020] Explanation of the accompanying drawings: 1. conductive busbar; 2. T-slot; 3. first opening; 4. switch base; 5. second opening; 6. conductive plate; 7. first through-hole; 8. bolt; 9. nut; 10. head; 11. block; 12. rod; 13. cross slot; 14. second through-hole; 15. fuse; 16. first static contact; 17. second static contact; 18. terminal block; 19. elastic arm. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] Example

[0026] This embodiment provides a fuse-type isolating switch, such as Figure 1 and Figure 2 As shown, it includes a switch base 4, a conductive busbar 1, a conductive plate 6 and a bolt 8 nut 9 assembly.

[0027] Switch base 4, such as Figure 3As shown, there are multiple groups of first static contacts 16 and second static contacts 17 arranged up and down and connected to the two ends of the fuse core 15 respectively, and the second static contacts 17 are fixed to the conductive plate 6 by rivets or screws. Figure 4 As shown, the first stationary contact 16 and the second stationary contact 17 both include a wiring board 18 and two elastic arms 19 disposed on the wiring board 18. The two elastic arms 19 are opposed to form a slot for inserting the end of the fuse.

[0028] Conductive busbar 1, such as Figure 5 As shown, it has a T-shaped slot 2 extending along its length direction, and first openings 3 located at both ends of the T-shaped slot 2 in the length direction, and the T-shaped slot 2 has a second opening 5 facing the switch base 4.

[0029] The conductive plate 6 is fixed on the switch base 4 and is formed with a first through hole 7 corresponding to the second opening 5 .

[0030] Bolt 8 nut 9 assembly, such as Figure 4 and Figure 5 As shown, the head 10 of the bolt 8 can be inserted from the first opening 3 and movably installed in the T-shaped slot 2. The head 10 can abut against the inner side surfaces of the stoppers 11 on both sides of the second opening 5. After the rod 12 of the bolt 8 passes through the second opening 5 and the first through hole 7, it is connected to the nut 9. The side of the rod 12 away from the head 10 is formed with a slot or a cross slot 13 for inserting a screwdriver, and the switch base 4 is formed with a second through hole 14 suitable for exposing the slot or the cross slot 13. The head 10 of the bolt 8 has a use state fixed to the conductive busbar 1, and a disassembly state removed from the second opening 5. In this embodiment, as shown in FIG. Figure 5 As shown, the cross-section of the head 10 is a rectangle, the short side of the rectangle is smaller than the size of the second opening 5, and the long side is larger than the size of the second opening 5. It should be noted that the cross-section of the head 10 can also be other shapes, such as a partial trapezoid or a partial triangle. For those skilled in the art, the shape of the head 10 can be flexibly designed so that it can be assembled and disassembled with the conductive busbar 1.

[0031] The fuse-type disconnector provided by the utility model is assembled by inserting the head 10 of the bolt 8 on the switch base 4 into the T-slot 2 from the first opening 3 of the conductive busbar 1, and after moving along the T-slot 2 to the desired position, inserting a screwdriver into the slot or cross slot 13 of the rod 12 of the bolt 8 and tightening it, so that the head 10 of the bolt 8 abuts against the inner side surfaces of the stoppers 11 on both sides of the second opening 5 of the T-slot 2, thereby fixing the conductive plate 6 and the conductive busbar 1. Compared with the prior art, this is more convenient for users to use and meets the installation requirements of users in different positions.

[0032] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A fuse-type disconnect switch, characterized in that: include: A conductive busbar (1) having a T-shaped slot (2) extending along its length direction and first openings (3) located at both ends of the T-shaped slot (2) in the length direction, wherein the T-shaped slot (2) has a second opening (5) facing a switch base (4); A conductive plate (6) fixed on the switch base (4) and having a first through hole (7) corresponding to the second opening (5); A bolt (8) and nut (9) assembly is arranged on the conductive plate (6); the head (10) of the bolt (8) can be inserted from the first opening (3) and movably installed in the T-shaped slot (2); the head (10) can abut against the inner side surfaces of the stoppers (11) on both sides of the second opening (5); the rod (12) of the bolt (8) passes through the second opening (5) and the first through hole (7) and is connected to the nut (9); a slot or a cross slot (13) for inserting a screwdriver is formed on a side of the rod (12) away from the head (10).

2. The fuse-type disconnect switch according to claim 1, characterized in that: The head (10) of the bolt (8) has a use state in which it is fixed to the conductive busbar (1), and a disassembly state in which it is removed from the second opening (5).

3. The fuse-type disconnector according to claim 2, characterized in that: The cross section of the head (10) is a rectangle, the short side of the rectangle is smaller than the size of the second opening (5), and the long side is larger than the size of the second opening (5).

4. The fuse-type disconnect switch according to claim 1, characterized in that: The switch base (4) is formed with a second through hole (14) suitable for exposing the slot or cross slot (13).

5. The fuse-type disconnector according to claim 1, characterized in that: The switch base (4) has a plurality of groups of first stationary contacts (16) and second stationary contacts (17) arranged up and down and respectively connected to the two ends of the fuse core (15); the second stationary contacts (17) are fixed to the conductive plate (6) by rivets or screws.

6. The fuse-type disconnector according to claim 5, characterized in that: The first stationary contact (16) and the second stationary contact (17) both comprise a wiring board (18) and two elastic arms (19) arranged on the wiring board (18).

Images