Power-on structure of switch

Abstract

The utility model relates to the field of electrical equipment, in particular to an electrifying structure of a switch. Comprising a wiring terminal which comprises a plurality of contact knives; the moving contact assembly comprises contact point parts of which the number is the same as that of the contact knives, and the moving contact assembly is rotationally arranged in the shell; the long swing arm comprises a movable end and a fixed end, and the fixed end is connected to the moving contact assembly; one end of the elastic component is used for being connected with the movable end of the long swing arm, and the elastic component is pulled to drive the long swing arm to swing; in a power-on state, the contact knife is in contact with the contact point part; according to the utility model, the length of the arm of force is increased through the long swing arm, the pulling force needing to be applied is reduced, the existence time of electric arcs generated by switching on and switching off between the contact knife and the contact part can be effectively shortened by means of instantaneous contraction of the elastic component, and the service life can be effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment, and in particular to a power-conducting structure for a switch. Background Technology

[0002] A disconnecting switch is an electrical device used in power systems, typically to disconnect or connect circuits to ensure equipment safety during maintenance or repair. It creates physical isolation within a circuit, preventing current from flowing and ensuring workers are not electrocuted during maintenance. Its primary function is to provide a visible disconnect point in the circuit, ensuring safe isolation during repairs or maintenance.

[0003] Use cases:

[0004] Maintenance and repair: When electrical equipment needs repair, inspection or replacement, disconnecting switches can effectively cut off the circuit and prevent the current from continuing to flow, avoiding safety problems such as electric shock.

[0005] High-voltage electrical equipment: Disconnecting switches are widely used in high-voltage electrical equipment, such as substations and power distribution systems.

[0006] Multi-break disconnect switches on the market are usually operated by directly turning the shaft of the moving contact to achieve opening and closing, which is too laborious.

[0007] Therefore, there is an urgent need to provide an improved technical solution to solve the above-mentioned technical problems. Utility Model Content

[0008] The purpose of this invention is to address the aforementioned technical problems by providing a switch that is more labor-saving and has a longer service life.

[0009] In view of this, the present invention provides an energizing structure for a switch, comprising:

[0010] The terminal block includes several contact blades;

[0011] The moving contact assembly includes contact portions having the same number of contact blades as the contact blades, and is rotatably disposed within the housing;

[0012] The long swing arm includes a movable end and a fixed end, with the fixed end connected to the moving contact assembly;

[0013] An elastic component, one end of which is used to connect to the movable end of the long swing arm, and the long swing arm is driven to swing by pulling the elastic component;

[0014] When energized, the blade contacts the contact point.

[0015] Furthermore, one end of the long swing arm is fixedly connected to the moving contact assembly.

[0016] Furthermore, one end of the long swing arm is hinged to the center of the moving contact assembly, and the other end is eccentrically hinged to the moving contact assembly.

[0017] Furthermore, it includes two sets of energized structures, with long swing arms arranged opposite each other, forming a receiving cavity between the outer shells to accommodate the long swing arms, and the movable ends of the two long swing arms are fixedly connected by a fixing rod.

[0018] Furthermore, it also includes:

[0019] The assist plate has one end that is rotatable and the other end that can engage with the output end of the handle. A lever is located in the middle of the assist plate, and the end of the lever is hooked to one side of the long swing arm.

[0020] Furthermore, the disk body includes:

[0021] The main body of the disc has a mounting groove on one side for fixing the contact piece. The end of the contact piece is the contact part. Springs are fixed on both sides of the contact piece, and the ends of the springs abut against the sides of the contact part.

[0022] Furthermore, the opposing surfaces of the two contact points are curved, and the distance between them is minimal at the midpoint.

[0023] The beneficial effects of this utility model are:

[0024] 1. This utility model increases the lever arm length by using a long swing arm, reducing the required pulling force. The instantaneous contraction of the elastic component can effectively shorten the existence time of the electric arc generated during the closing and opening of the contact blade and the contact point, thus effectively extending the service life.

[0025] 2. The panel of this utility model has a notch on one side that extends to the edge of the panel. This notch facilitates the placement of the contact blade in the receiving groove, making it easy to install the contact blade and the moving contact assembly. Furthermore, when the circuit is opened, the contact blade is positioned at the notch, which can effectively prevent the contact blade from creeping. Attached Figure Description

[0026] Figure 1 A three-dimensional structural diagram of the switch including this utility model;

[0027] Figure 2 This is a schematic diagram of the installation structure of this utility model;

[0028] Figure 3 This is a perspective structural diagram of the present invention;

[0029] Figure 4 This is a schematic diagram of the moving contact assembly of this utility model;

[0030] Figure 5 This is a schematic diagram of the spring mounting structure of this utility model.

[0031] The markings in the diagram are as follows:

[0032] 1. Contact blade; 2. Contact part; 3. Long swing arm; 4. Elastic component; 5. Disc; 6. Gap; 8. Notch; 9. Receiving groove; 10. Assist plate; 11. Lever; 12. Mounting groove; 13. Contact piece; 14. Spring. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0034] Example 1:

[0035] This embodiment provides an energizing structure for a switch, including:

[0036] The terminal block includes several contact blades 1;

[0037] The moving contact assembly includes contact portions 2 having the same number of contact blades 1 as the contact portion 1, which are rotatably disposed within the housing;

[0038] The long swing arm 3 includes a movable end and a fixed end, with the fixed end connected to the moving contact assembly;

[0039] The elastic member 4 has one end connected to the movable end of the long swing arm 3, and the long swing arm 3 is driven to swing by pulling the elastic member 4.

[0040] When energized, the contact blade 1 contacts the contact portion 2.

[0041] The terminal block is used to connect the live and neutral wires, and generally there are two. The terminal block includes a contact blade 1, and the moving contact assembly includes a disc body 5. Inside the disc body 5, there are electrically connected contact parts 2, which are made of conductive material. Shafts are located on both sides of the disc body 5, and these shafts fit within the housing, allowing the moving contact assembly to be selected. The contact parts 2 can be rotated to change position. When closing is required, the contact blade 1 and contact parts 2 contact each other, energizing the live and neutral wires. When opening is required, the contact blade 1 and contact parts 2 are staggered, allowing the moving contact assembly to simultaneously disconnect from the live and neutral wires, achieving double or multi-point opening and improving breaking capacity. By dividing the circuit into two independent break points, each break point separates simultaneously, effectively reducing the energy carried when a single break point interrupts a short-circuit current. This design significantly improves the breaking capacity of the circuit breaker, enabling it to handle higher short-circuit currents.

[0042] The long swing arm 3 includes a movable end and a fixed end. The long swing arm 3 is generally mounted on the outer wall of the housing. One end of the long swing arm 3 is fixedly connected to the moving contact assembly. The fixed end of the long swing arm 3 is fixedly connected to the center of the disc 5 of the moving contact assembly. When the movable end is pulled up and down, the long swing arm 3 swings up and down. The movable end is in two positions, upper and lower, corresponding to the open and closed states of the switch, respectively. By increasing the lever arm length through the long swing arm 3, the required pulling force is reduced. A swing rod that swings up and down by rotating the handle can be provided on the handle. One end of the elastic member 4 is fixed to the swing rod. The other end is fixed to the movable end of the long swing arm 3. When the elastic member 4 is operated by the handle to swing up and down, the energy storage property of the elastic member 4 can cause the closing of the long swing arm 3 to be delayed. The position of the movable end of the long swing arm 3 can be adjusted instantaneously by relying on the property of the elastic member 4 to instantly return to its original state. After the handle is adjusted from the open position to the closed position, the elastic member 4 instantly contracts and pulls the long swing arm 3 to the closed position. This can effectively shorten the existence time of the electric arc generated by the closing and opening between the contact knife 1 and the contact part 2, and effectively extend the service life.

[0043] Example 2:

[0044] This embodiment provides a power-on structure for a switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0045] One end of the long swing arm 3 is hinged to the center of the moving contact assembly, and the other end is eccentrically hinged to the moving contact assembly.

[0046] Another connection method for the long swing arm 3 is to set the fixed end in the middle of the long swing arm 3. The fixed end refers not only to the end but also to the mounting part of the long swing arm 3 on the disc body 5. The fixed end is hinged to the eccentric position of the disc body 5. The other end of the long swing arm 3 opposite to the movable end is hinged to the outer shell or to the center of the disc body 5. When it is hinged to the outer shell, an eccentric hole needs to be provided on the disc body 5. An eccentric rod that mates with the eccentric hole is provided on the side wall of the long swing arm 3. The eccentric rod can slide and rotate in the eccentric hole for easy movement. Through the above method, the pulling force that can start the movable end of the long swing arm 3 is further reduced, which can save more effort and make the rotation of the handle easier.

[0047] Example 3:

[0048] This embodiment provides a power-on structure for a switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] It includes two sets of energized structures, with long swing arms 3 arranged opposite to each other, and the movable ends of the two long swing arms 3 are fixedly connected by a fixing rod.

[0050] The two long swing arms 3 are integrated into one unit, simplifying the structure. The two long swing arms 3 only require one elastic component 4 for cooperation, saving parts costs. Furthermore, the elastic component 4 can be connected to the fixed rod.

[0051] Example 4:

[0052] This embodiment provides a power-on structure for a switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0053] The moving contact assembly includes:

[0054] The disc body 5 has a receiving groove 9 on its periphery, and two superimposed contact parts 2 are provided in the receiving groove 9. A gap 6 is formed between the contact parts 2, and a notch 8 extending to the edge is provided on one side of the disc body 5.

[0055] The panel 5 has a receiving groove 9 on its periphery. Two superimposed contact parts 2 are provided on both sides of the receiving groove 9, and a gap 6 is formed between the contact parts 2. The contact blade 1 contacts the contact part 2 in the gap 6, increasing the contact area and enhancing the conductivity. On one side of the panel 5, there is a notch 8 that extends to the edge of the panel 5. This notch 8 makes it easy to place the contact blade 1 in the receiving groove 9, so that the contact blade 1 and the moving contact assembly can be easily installed together. When the circuit is opened, the contact blade 1 corresponds to the position of the notch 8, which can effectively prevent the contact blade 1 from creeping.

[0056] Example 5:

[0057] This embodiment provides a power-on structure for a switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] Also includes:

[0059] The assist plate 10 has one end that is rotatably mounted and the other end that can abut against the output end of the handle. A lever 11 is provided in the middle of the assist plate 10, and the end of the lever 11 is hooked to one side of the long swing arm 3.

[0060] One end of the assist plate 10 is hinged to the outer casing, and the other end can be pressed down by a slider or a spring rod. When the circuit is opened, the contact blade 1 is clamped between the contact parts 2 or against the contact parts 2, which will generate a certain friction force. When the circuit is closed, a greater pulling force is required. When the assist plate 10 is against the spring rod or slider, the lever 11 will push the long swing arm 3 in the swing direction of the assist plate 10, which can more effectively achieve the opening of the circuit.

[0061] Example 6:

[0062] This embodiment provides a power-on structure for a switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0063] Disk body 5 includes:

[0064] The main body of the disk body 5 has a mounting groove 12 on one side for fixing the contact piece 13. The end of the contact piece 13 is the contact part 2. Springs 14 are fixed on both sides of the contact piece 13, and the ends of the springs 14 abut against both sides of the contact part 2.

[0065] The mounting slot 12 is used to install the contact piece 13. The contact piece 13 is made of a material with good conductivity. A spring 14 is fixed on both sides of the contact piece 13. The two ends of the spring 14 are bent towards the contact part 2 and abut against both sides of the contact part 2, generating an inward compressive pressure on the contact part 2, so that the contact part 2 and the contact blade 1 make the contact tighter and the electrical connection quality higher.

[0066] The surfaces of the two contact points facing each other are curved, and the distance between them is the smallest at the middle position.

[0067] This makes it easier for the contact blade 1 to be inserted or removed between the contact points 2.

[0068] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms fall within the scope of protection of this application.

Claims

1. A switching energizing structure, characterized in that, include: The terminal block includes several contact blades (1); The moving contact assembly includes contact portions (2) having the same number as the contact blade (1), and is rotatably disposed within the housing; The long swing arm (3) includes a movable end and a fixed end, with the fixed end connected to the moving contact assembly; The elastic member (4) has one end connected to the movable end of the long swing arm (3), and the long swing arm (3) is driven to swing by pulling the elastic member (4). When energized, the blade (1) contacts the contact part (2).

2. The energizing structure of a switch according to claim 1, characterized in that, One end of the long swing arm (3) is fixedly connected to the moving contact assembly.

3. The energizing structure of a switch according to claim 1, characterized in that, One end of the long swing arm (3) is hinged to the center of the moving contact assembly, and the other end is eccentrically hinged to the moving contact assembly.

4. The energizing structure of a switch according to claim 3, characterized in that, It includes two sets of power-conducting structures, with long swing arms (3) arranged opposite to each other, and the movable ends of the two long swing arms (3) are fixedly connected by a fixing rod.

5. The energizing structure of a switch according to claim 1, characterized in that, The moving contact assembly includes: The disc body (5) has a receiving groove (9) on its periphery. Two overlapping contact parts (2) are provided in the receiving groove (9). A gap (6) is formed between the contact parts (2). A notch (8) extending to the edge is provided on one side of the disc body (5).

6. The energizing structure of a switch according to claim 1, characterized in that, Also includes: The assist plate (10) is rotatably set at one end and can be engaged with the output end of the handle at the other end. A lever (11) is provided in the middle of the assist plate (10), and the end of the lever (11) is hooked on one side of the long swing arm (3).

7. The energizing structure of a switch according to claim 1, characterized in that, The disk body (5) includes: The main body of the disc (5) has a mounting groove (12) on one side for fixing the contact piece (13). The end of the contact piece (13) is the contact part (2). Springs (14) are fixed on both sides of the contact piece (13), and the ends of the springs (14) abut against both sides of the contact part (2).

8. The energizing structure of a switch according to claim 5, characterized in that, The surfaces of the two contact points facing each other are curved, and the distance between them is the smallest at the middle position.

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