Static contact with homing system for isolation switch

[0026] Specific embodiments are given below in conjunction with the drawings to further describe the technical solutions of the present invention in detail. This embodiment is the best embodiment based on the technical solution of the present invention, but the protection scope of the present invention is not limited to the following embodiments.

[0027] Such as Figure 1-3 As shown, a static contact for an isolating switch with a homing system includes a fixed head 1, a conductive splint 2 and a homing system arranged at the root of the conductive splint 2 and slidingly fitted with the conductive splint 2. The homing system includes a homing member 4 sleeved on the conductive splint 2, a spring 5, a limiting boss 7 on the conductive splint 2 for limiting the horizontal movement limit position of the homing member 4, and a fixedly arranged on the conductive splint 2 The outer guide sleeve 8, the root of the guide sleeve 8 is extended and connected in the fixed head 1 to consolidate the stability, such as figure 2 As shown, the returning member 4 is provided with a jack 9 for the conductive splint 2 to be inserted into, and the jack 9 respectively extends to both ends with a rail slot 10 for the conductive splint 2 to slide back and forth. The rail slot 10 The width is not less than the width of the socket 9, and a spring 5 is connected between the return piece 4 and the conductive splint 2. The setting of the return element is used to limit the action of the conductive splint, which ensures that the static contact is in use The action limit and automatic return after use, thereby avoiding deformation and excessive damage caused by changes in current and electromagnetic force; the end of the return piece 4 is set in the chute 6 inside the fixed head 1; The setting of the boss and the chute controls the horizontal and vertical movement of the homing member, which is more convenient for the homing control of the homing member to the conductive splint;

[0028] The conductive splint 2 is composed of two bent electromagnetic sheets 11. The conductive splint 2 includes an inner contact plate 201 in contact with the movable contact, an outer contact plate 202 in contact with the guide sleeve 8 and a connection between the inner contact plate 201 and the outer contact. The curved connecting portion 203 of the plate 202, and the outer side of the curved connecting portion 203 is arranged in contact with the guide sleeve 8, such as image 3 As shown, the outer side of the curved connecting portion 203 is fixedly provided with a telescopic sleeve 12, and the inner side of the guide sleeve 8 is fixedly provided with a boss 3 corresponding to the telescopic sleeve 12, which avoids the gap between the inner and outer sides of a single electromagnetic sheet. The electromagnetic repulsion force is too large to cause deformation of the electromagnetic sheet; the root of the conductive splint 2 is fixedly connected to the fixed head 1.

[0029] Further, the conductive clamping plate 2 is formed by two bent electromagnetic sheets 11 with the same shape arranged opposite to each other, which helps the movable contact to enter and be clamped.

[0030] Further, the width of the track slot 10 is greater than the width of the socket 9, which facilitates the insertion of the conductive splint and slides back and forth due to electromagnetic force, and can cooperate with the spring 5 to further limit the sliding position of the conductive splint, and limit its movement. .

[0031] Further, the root of the guide sleeve 8 is extended and connected in the fixed head 1 by bolts, which is safe, reliable, and stable.

[0032] Further, the guide sleeve 8 is a flat structure made of insulating material.

[0033] Further, the end of the return member 4 passes through the guide sleeve 8 and is set in the slide groove 6 inside the fixed head 1. The slide groove 6 limits the horizontal and vertical movement of the return member, which is convenient for the return member to conduct electricity. Home control of the splint.

[0034] When the repulsive force between the inner and outer sides of the same electromagnetic sheet and the attractive force between the inner contact plates of the two electromagnetic sheets clamp the movable contact at the same time, the greater the current, the greater the clamping force, which causes the dynamic contact The head is difficult to pull out and easy to damage due to excessive clamping force. On the other hand, the repulsive force between the inner and outer sides of the same electromagnetic sheet will cause deformation and damage to the electromagnetic sheet; The isolating switch of the system uses static contacts, and the homing system limits the action of the electromagnetic sheet, which ensures the action limit of the static contact during use and the automatic homing after use, thereby avoiding current and electromagnetic The deformation and excessive damage caused by the change of force are convenient for long-term use, convenient for maintenance, good performance, low cost, and have good application prospects.

[0035] The implementation of the present invention is not limited by the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention should be equivalent replacement methods, and are included in Within the protection scope of the present invention.