Multi-position wiring structure for rotary disconnecting switch

Abstract

The utility model belongs to the technical field of low-voltage switches, and particularly relates to a multi-position wiring structure for a rotary disconnecting switch, which comprises a static contact, the static contact is provided with a wiring part connected with a load and a contact part connected with a moving contact, and the wiring part is provided with at least two wiring sites. According to the multi-site wiring structure of the rotary disconnecting switch provided by the utility model, at least two parts can be connected to the wiring part of the same static contact at the same time, and the operation of parallel convergence in advance is not needed, so that the flexibility of an installation site is facilitated. And when the wires are separately connected, the heat dissipation capability of the wires is effectively improved, and compared with a single wire with the same cross section, the temperature rise is lower, and the performance is better improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-voltage switches, and in particular relates to a multi-position wiring structure for a rotary isolating switch. Background Art

[0002] The rotary isolating switch is an important device widely used in power systems and industrial fields. Its main function is to cut off and isolate the power supply to ensure the safe operation of electrical equipment during maintenance and shutdown. The current market trend is to miniaturize the size of the switch. Due to size limitations, only one wiring part can be connected at the same height. This structure has the problem of generally high temperature rise. In addition, when parallel connection is required, the access wires need to be connected in parallel in advance during on-site wiring, which is not conducive to flexible and diversified operations on site. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a multi-position wiring structure for a rotary isolating switch.

[0004] The technical solution adopted by the utility model is as follows: a multi-position wiring structure for a rotary disconnector, comprising an insulating shell, a moving contact assembly and a stationary contact arranged in the insulating shell, wherein the moving contact assembly comprises a moving contact, and the stationary contact has a wiring portion connected to a load and a contact portion connected to the moving contact, wherein the wiring portion is provided with at least two wiring locations.

[0005] The wiring location is a connection hole arranged on the wiring portion, and the connection hole is equipped with a threaded fastener.

[0006] The threaded fasteners are bolts and nuts. The bolts pass through the connection holes and are threadedly connected with the nuts. The nuts are rivet nuts, and the embossed teeth of the nuts are pressed into the connection holes.

[0007] The insulating shell includes a first side plate and a second side plate, the first side plate and the second side plate form a mounting cavity, the moving contact assembly is arranged in the mounting cavity, the static contact passes through the first side plate so that its contact portion is located in the mounting cavity and the wiring portion is located outside the mounting cavity, and the center line of the wiring position is parallel to the extension direction of the first side plate.

[0008] The wiring part is a flat plate structure arranged to fit the outer side surface of the first side plate, and the wiring part is provided with at least two connection holes for wiring.

[0009] It also includes bolts and nuts. A concave cavity is provided on the first side plate. The nut is arranged in the concave cavity. The bolt passes through a connecting hole and is threadedly connected to the nut. The nut is a rivet nut, and its embossed teeth are pressed into the connecting hole.

[0010] The plane where the wiring portion is located is perpendicular to the plane where the contact portion is located or is inclined relative to the plane where the contact portion is located to form an angle.

[0011] The beneficial effects of the utility model are as follows: the utility model provides a multi-point wiring structure, and at least two parts can be connected to the wiring part of the same static contact at the same time, without the need for parallel connection and convergence operation in advance, which is convenient for the flexibility of the installation site. When the wires are connected separately, the heat dissipation capacity of the wires is effectively increased. Compared with a single wire of the same cross-section, the temperature rise is lower, which is more conducive to improving performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0013] Figure 1 A schematic diagram of the structure of a multi-bit wiring structure with two wiring sites in Example 1;

[0014] Figure 2 An exploded view of a multi-position wiring structure with two wiring sites in Example 1;

[0015] Figure 3 This is a schematic structural diagram of a static contact of a multi-position wiring structure having two wiring sites in Example 1;

[0016] Figure 4 Schematic diagram of the structure of a multi-bit wiring structure with three wiring sites in Example 1;

[0017] Figure 5 Schematic diagram of the structure of a multi-bit wiring structure with four wiring sites in Example 1;

[0018] Figure 6 A schematic diagram of the structure of a multi-bit wiring structure with two wiring sites in Example 2;

[0019] Figure 7 It is a structural schematic diagram of the rotary isolating switch in Example 3;

[0020] Figure 8 is a schematic structural diagram of the insulating housing in Example 3;

[0021] In the figure, the static contact 100, the wiring part 110, the connecting hole 111, the bolt 112, the nut 113, the connecting plate 114, the wiring ear 115, and the contact part 120;

[0022] Insulating housing 200, first side plate 210, concave cavity 211, second side plate 220, installation cavity 230;

[0023] Moving contact assembly-300;

[0024] Terminal Block-400. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0026] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0027] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0028] Embodiment 1:

[0029] A multi-position wiring structure of a rotary disconnect switch, such as Figure 7 As shown, the rotary disconnector includes an insulating housing 200, a moving contact assembly 300 and a stationary contact 100 disposed in the insulating housing 200, wherein the moving contact assembly 300 includes a moving contact, and the stationary contact 100 includes a wiring portion 110 connected to a load and a contact portion 120 connected to a moving contact, and at least two wiring locations are provided on the wiring portion 110. Specifically, the stationary contact 100 includes a wiring portion 110 connected to a load and a contact portion 120 connected to a moving contact, and at least two wiring locations are provided on the wiring portion 110, for example Figure 1-2 The wiring structure shown has two wiring locations, Figure 4 The wiring structure shown has three wiring locations, Figure 5 A wiring structure with four wiring locations is shown.

[0030] like Figure 3As shown, the wiring part 110 is a flat plate structure, and the wiring point is a connecting hole 111 set on the wiring part 110, and the connecting hole 111 is equipped with a threaded fastener. Specifically, the threaded fastener is a bolt 112 and a nut 113, and the bolt 112 passes through the connecting hole 111 and is threadedly connected with the nut 113. When wiring, the bolt 112 passes through the through hole of the wiring terminal 400 and the connecting hole 111 on the wiring part 110 in turn and is threadedly fastened to the nut 113, so that the wiring terminal 400 and the wiring part 110 fit tightly to form a stable conductive connection. It is also possible not to set the nut 113, and directly set the thread on the inner wall of the connecting hole 111, but the stability of this structure is relatively poor. The connecting holes 111 are arranged in sequence along the extension direction of the wiring part 110, and the number of them can be set according to the length of the wiring part 110, for example Figure 4 , Figure 5 The structure shown.

[0031] As shown in the figure, the plane where the wiring portion 110 is located is perpendicular to the plane where the contact portion 120 is located. The plane where the wiring portion 110 is located can also be tilted relative to the plane where the contact portion 120 is located to form an angle to facilitate wiring.

[0032] The nut 113 is a self-clinching nut, and its embossed teeth are pressed into the connecting hole 111 .

[0033] like Figure 8 As shown, the insulating housing 200 includes a first side plate 210 and a second side plate 220, the first side plate and the second side plate enclose a mounting cavity 230, the moving contact assembly 300 is arranged in the mounting cavity 230, the static contact 100 passes through the first side plate so that its contact portion 120 is located in the mounting cavity 230 and the wiring portion 110 is located outside the mounting cavity 230, and the center line of the wiring site is parallel to the extension direction of the first side plate. This can save space.

[0034] Furthermore, the wiring portion 110 is arranged to fit the outer side surface of the first side panel, a concave cavity 211 is provided on the first side panel 210, the nut 113 is arranged in the concave cavity 211, and the bolt 112 passes through the connecting hole 111 and is threadedly connected to the nut 113. Further space is saved. The length of the wiring portion 110 can be smaller than the first side panel, as shown in the figure, or it can be adapted to the length of the first side panel, and the number of connecting holes is set according to the length of the first side panel. It can also be longer than the length of the first side panel, protruding relative to the insulating shell 200, and is used to carry more wiring sites, and synchronous wiring of multiple sites can be performed on the same side panel, which is not easy to be confused.

[0035] Embodiment 2:

[0036] like Figure 6As shown, the structure of this embodiment is substantially the same as that of the first embodiment, and the main difference is the specific structure of the wiring portion 110. Specifically, the wiring portion 110 of this embodiment includes a flat connecting plate 114 connected to the contact portion 120 and at least two wiring ears 115 vertically connected to the connecting plate 114. Each wiring ear 115 is provided with a wiring site, i.e., a connecting hole 111 for wiring. In order to facilitate the installation of the threaded fastener on the wiring ear 115, the wiring ear 115 can be arranged tilted.

[0037] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A multi-position wiring structure for a rotary disconnector, comprising an insulating housing (200), a moving contact assembly (300) and a stationary contact (100) arranged in the insulating housing (200), wherein the moving contact assembly (300) comprises a moving contact, and the stationary contact (100) has a wiring portion (110) connected to a load and a contact portion (120) connected to the moving contact, characterized in that: The wiring portion (110) is provided with at least two wiring sites.

2. The multi-position wiring structure for a rotary disconnector according to claim 1, characterized in that: The wiring point is a connection hole (111) arranged on the wiring portion, and the connection hole (111) is matched with a threaded fastener.

3. The multi-position wiring structure for a rotary disconnector according to claim 2, characterized in that: The threaded fasteners are bolts (112) and nuts (113); the bolts (112) pass through the connection holes (111) and are threadedly connected to the nuts (113); the nuts (113) are rivet nuts, and their embossed teeth are pressed into the connection holes (111).

4. The multi-position wiring structure for a rotary disconnector according to claim 2, characterized in that: The insulating housing (200) comprises a first side plate (210) and a second side plate (220), wherein the first side plate (210) and the second side plate (220) enclose a mounting cavity (230), wherein the moving contact assembly (300) is disposed in the mounting cavity (230), and wherein the stationary contact (100) passes through the first side plate (210) such that its contact portion (120) is located in the mounting cavity (230) and the wiring portion (110) is located outside the mounting cavity (230), and a center line of the wiring position is parallel to an extension direction of the first side plate (210).

5. The multi-position wiring structure for a rotary disconnector according to claim 4, characterized in that: The wiring portion (110) is a flat plate structure arranged in contact with the outer side surface of the first side plate, and the wiring portion (110) is provided with at least two connection holes (111) for wiring.

6. The multi-position wiring structure for a rotary disconnector according to claim 5, characterized in that: The invention also comprises a bolt (112) and a nut (113); a concave cavity (211) is provided on the first side plate (210); the nut (113) is arranged in the concave cavity (211); the bolt (112) passes through the connecting hole (111) and is threadedly connected with the nut (113); the nut (113) is a rivet nut, and its embossed teeth are pressed into the connecting hole (111).

7. The multi-position wiring structure for a rotary disconnector according to any one of claims 4 to 6, characterized in that: The plane where the wiring portion (110) is located is perpendicular to the plane where the contact portion (120) is located, or is inclined relative to the plane where the contact portion (120) is located to form an angle.

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