Contact mounting structure of disconnecting switch

Abstract

The utility model provides a contact installation structure of a disconnecting switch, which comprises a contact knife and a guide sleeve, the contact knife can be installed on a switch body in an up-down linear movement mode, the guide sleeve is fixed on the outer wall of a solid-sealed polar pole and is vertically arranged, and a sliding groove for the contact knife to move up and down is formed in the guide sleeve. The contact knife adopts a linear movement mode, so that the occupied space of the cabinet body is small, and the production cost of the cabinet body is reduced; in addition, the guide sleeve and the middle static contact are both fixed on the solid-sealed polar pole, so that the structure is more compact, and miniaturization is further realized.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a contact mounting structure of an isolating switch. Background Art

[0002] Isolators are commonly used in fully enclosed combination electrical appliances or ring main units. Existing isolators use a dual-pole rotary mechanism to open and close the circuit. The main shaft drives the blades, which connect or disconnect the isolating and grounding static contacts. The rotating blades increase the cabinet's width, increasing the cost. Utility Model Content

[0003] To this end, the utility model provides a contact mounting structure for an isolating switch, comprising a contact knife and a guide sleeve, wherein the contact knife can be mounted on a switch body so as to move linearly up and down; the guide sleeve is fixed to the outer wall of a sealed pole and is arranged vertically, and the guide sleeve is formed with a sliding groove for the contact knife to move up and down, an intermediate static contact is provided on the sealed pole, and an opening is provided on the side of the guide sleeve for the intermediate static contact to extend into.

[0004] The inner wall of the guide sleeve is provided with a plurality of convex ribs arranged at intervals.

[0005] Mounting plates are respectively provided on both sides of the guide sleeve in the length direction, and the mounting plates are assembled with the sealed poles through bolts.

[0006] The intermediate static contact includes a connecting plate arranged inside the sealed pole, and a contact plate integrally connected to the connecting plate and extending into the guide sleeve, the contact plate is formed with a U-shaped slot for the contact blade to be inserted, and a straight conductive spring is provided on the inner wall of the U-shaped slot, and the length extension direction of the straight conductive spring is arranged parallel to the contact blade surface on the side of the contact blade, wherein, when the contact blade is inserted into the slot, the side surface of the straight conductive spring is squeezed by the contact blade surface and is in contact with it.

[0007] The technical solution of this utility model has the following advantages:

[0008] 1. The contact mounting structure of the isolating switch provided by the present invention includes a contact blade and a guide sleeve. The contact blade is mounted on the switch body so as to be movable linearly up and down. The guide sleeve is fixed to the outer wall of the solid-sealed pole and is arranged vertically. The guide sleeve is formed with a slide groove for the contact blade to move up and down. Compared with the conventional contact blade that adopts a rotating method, the contact blade adopts a linear movement method, which occupies less cabinet space and reduces the production cost of the cabinet. In addition, the guide sleeve and the intermediate static contact are both fixed to the solid-sealed pole, so the structure is more compact and further miniaturization is achieved.

[0009] 2. The contact mounting structure of the isolating switch provided by the present invention has a plurality of spaced ribs on the inner wall of the guide sleeve. The ribs reduce the sliding contact area between the contact blade and the guide sleeve, reduce friction, and thus reduce the requirement for the driving force of the contact blade.

[0010] 3. The contact mounting structure of the disconnector provided by the present invention comprises an intermediate static contact including a connecting plate arranged inside the sealed pole, and a contact plate integrally connected to the connecting plate and extending into the guide sleeve, the contact plate being formed with a U-shaped slot for inserting a contact blade, and a straight conductive spring being provided on the inner wall of the U-shaped slot, the length extension direction of the straight conductive spring being arranged parallel to the contact blade surface on the side of the contact blade, wherein when the contact blade is inserted into the slot, the side surface of the straight conductive spring is squeezed by the contact blade surface and comes into contact with it, and in addition to providing contact pressure, the straight conductive spring is also used for conductive connection between the static contact and the moving contact, and when the current increases, the contact area between the static contact and the contact blade can be increased by only slightly increasing the length of the straight conductive spring, and the contact pressure increased in this way is small, making the opening and closing contact process more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] 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 any creative work.

[0012] Figure 1 A perspective view of the isolating switch of the present utility model;

[0013] Figure 2 A perspective view of the contact mounting structure;

[0014] Figure 3 This is an exploded structural diagram of the contact mounting structure;

[0015] Figure 4 The exploded structure diagram of the driven gear, intermediate gear, guide sleeve and intermediate static contact;

[0016] Figure 5 It is a schematic diagram of the assembly of the contact blade, the middle static contact and the straight conductive spring.

[0017] Explanation of the accompanying reference numerals: 1. contact blade; 2. switch body; 3. main shaft; 6. intermediate static contact; 8. slot; 9. straight conductive spring; 14. rack; 15. main gear; 16. driven gear; 17. intermediate gear; 18. guide sleeve; 19. slide groove; 20. opening; 22. sealed pole; 33. rib; 34. mounting plate; 35. bolt; 36. connecting plate; 37. contact plate; 110. contact blade surface. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] 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.

[0022] Example

[0023] This embodiment provides a contact installation structure of an isolating switch, such as Figure 1 and Figure 3 As shown, it includes a contact blade 1, a guide sleeve 18 and an intermediate static contact 6.

[0024] The contact blade 1 is mounted on the switch body 2 so as to be movable up and down in a straight line. A rack 14 is provided on the side of the contact blade 1 .

[0025] Guide sleeve 18, such as Figure 2 As shown, it is fixed on the outer wall of the sealed pole 22 and is arranged vertically. The guide sleeve 18 is formed with a slide groove 19 for the contact knife 1 to move up and down. The sealed pole 22 is provided with an intermediate static contact 6. Figure 4 As shown, the side of the guide sleeve 18 is provided with an opening 20 for the intermediate static contact 6 to extend into, and the inner wall of the guide sleeve 18 is provided with a plurality of spaced ribs 33. The two sides of the guide sleeve 18 in the length direction are respectively provided with mounting plates 34, and the mounting plates 34 are assembled with the sealed pole 22 by bolts 35.

[0026] like Figure 4 As shown, the intermediate static contact 6 includes a connecting plate 36 provided inside the sealed pole 22, and a contact plate 37 integrally connected to the connecting plate 36 and extending into the guide sleeve 18. Figure 5 As shown, the contact plate 37 is formed with a U-shaped slot 8 for inserting the stylus 1, and a straight conductive spring 9 is provided on the inner wall of the U-shaped slot 8. The length extension direction of the straight conductive spring 9 is arranged parallel to the stylus surface 110 on the side of the stylus 1. When the stylus 1 is inserted into the slot 8, the side surface of the straight conductive spring 9 is squeezed by the stylus surface 110 and is in contact with it.

[0027] The switch body 2 is provided with a touch knife driving mechanism for driving the touch knife 1 to move. Figure 1 、 Figure 2 and Figure 3 As shown, it includes a main gear 15, a driven gear 16 and an intermediate gear 17. The main gear 15 is fixed on the main shaft 3 and rotates in conjunction with the main shaft 3; the driven gear 16 is meshed with the rack 14; the intermediate gear 17 is coaxially arranged with the driven gear 16, and the intermediate gear 17 is meshed with the main gear 15. The main gear 15 drives the driven gear 16 to rotate through the intermediate gear 17.

[0028] The contact mounting structure of the isolating switch provided by the present invention includes a contact blade 1 and a guide sleeve 18. The contact blade 1 can be installed on the switch body 2 so as to move linearly up and down. The guide sleeve 18 is fixed to the outer wall of the solid-sealed pole 22 and is arranged vertically. The guide sleeve 18 is formed with a slide groove for the contact blade 1 to move up and down. Compared with the contact blade in the prior art which adopts a rotating manner, the contact blade 1 adopts a linear movement manner, occupies less cabinet space, and reduces the production cost of the cabinet. In addition, the guide sleeve 18 and the intermediate static contact 6 are both fixed on the solid-sealed pole, so that the structure is more compact and miniaturization is further achieved.

[0029] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. 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 implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A contact mounting structure for an isolating switch, characterized in that: include: The contact blade (1) is mounted on the switch body (2) so as to be movable in a straight line up and down; The guide sleeve (18) is fixed on the outer wall of the sealed pole (22) and is arranged vertically. The guide sleeve (18) is formed with a slide groove (19) for the contact knife (1) to move up and down. The sealed pole (22) is provided with an intermediate static contact (6). The side of the guide sleeve (18) is provided with an opening (20) for the intermediate static contact (6) to extend into.

2. The contact mounting structure of the isolating switch according to claim 1, characterized in that: The inner wall of the guide sleeve (18) is provided with a plurality of convex ribs (33) arranged at intervals.

3. The contact mounting structure of the isolating switch according to claim 1 or 2, characterized in that: Mounting plates (34) are respectively provided on both sides of the guide sleeve (18) in the length direction, and the mounting plates (34) are assembled with the sealed pole (22) via bolts (35).

4. The contact mounting structure of the isolating switch according to claim 1, characterized in that: The intermediate static contact (6) includes a connecting plate (36) arranged inside the sealed pole (22), and a contact plate (37) integrally connected to the connecting plate (36) and extending into the guide sleeve (18), the contact plate (37) is formed with a U-shaped slot (8) for the contact blade (1) to be inserted, and a straight conductive spring (9) is provided on the inner wall of the U-shaped slot (8), and the length extension direction of the straight conductive spring (9) is arranged parallel to the contact blade surface (110) on the side of the contact blade (1), wherein, when the contact blade (1) is inserted into the slot (8), the side of the straight conductive spring (9) is squeezed by the contact blade surface (110) and is in contact with it.

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