Miniature isolating switch

Abstract

The utility model discloses a small-sized isolating switch, which comprises a shell and wiring terminals arranged on two sides of the shell, a static contact piece is further arranged in the shell, and the shell is connected with the wiring terminals through the static contact piece; a moving contact assembly is also arranged in the shell; the moving contact assembly comprises a moving frame, a mounting cavity is formed in the middle of the moving frame, a moving contact piece is arranged in the mounting cavity, and the middle of the moving contact piece abuts against the upper wall face of the mounting cavity through an arranged elastic piece. And the moving contact assembly is driven to move upwards or downwards in the shell through a handle arranged on the shell, so that the moving contact piece is contacted with or separated from the static contact piece. On the basis, after the movable contact piece is connected with the mounting cavity, the movable contact piece abuts against the interior of the mounting cavity through the arranged elastic piece, the movable contact piece is fixed, and meanwhile extra pressure can be exerted through the elastic piece so that the movable contact piece can be reliably pressed on the static contact piece.

Description

Technical Field

[0001] This utility model relates to the field of electrical switch technology, specifically a small disconnect switch. Background Technology

[0002] The search revealed that existing technologies, such as the one with announcement number CN203386624U, although solving the problem that the disconnecting switch does not have an indicating function, have at least the following problems in actual use: the contact between the moving contact and the stationary contact relies entirely on the pressure of the handle. If the pressure of the handle is insufficient, it is very easy to cause poor contact between the moving contact and the stationary contact. Utility Model Content

[0003] The purpose of this invention is to provide a small disconnect switch to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a small disconnect switch, comprising a housing, terminals mounted on both sides of the housing, and a moving contact assembly within the housing; the moving contact assembly includes a movable frame, a mounting cavity in the middle of the movable frame, and a moving contact piece within the mounting cavity, the middle of the moving contact piece abutting against the upper wall of the mounting cavity via an elastic element; a stationary contact piece is also provided within the housing, one end of the stationary contact piece being connected to the terminals, and a handle on the housing causing the moving contact piece on the moving contact assembly to contact or separate from the other end of the stationary contact piece, thereby achieving circuit connection or disconnection.

[0005] As a preferred technical solution of this utility model, it also includes an indicator; the indicator is rotatably connected to the housing via a main shaft; one side of the main shaft is adapted to be connected to a linkage pin on the movable frame via a sliding groove, and the other side of the main shaft is also provided with an indicator plate.

[0006] As a preferred technical solution of this utility model: the slide is arc-shaped, and when the moving frame moves upward, the indicator rotates counterclockwise.

[0007] As a preferred technical solution of this utility model: the inside of the housing is further provided with a limiting block, and the upward movement of the moving contact piece is limited by the limiting block.

[0008] As a preferred technical solution of this utility model: the side of the stationary contact piece away from the terminal block is inserted into the slot provided on the limiting block.

[0009] As a preferred technical solution of this utility model: a support block is also provided inside the housing, and one end of the static contact piece passes through the slot and is connected to the support block.

[0010] As a preferred technical solution of this utility model: the interior of the housing is further provided with a guide groove for guiding the directional sliding of the moving frame.

[0011] The beneficial effects of this utility model by adopting the above technical solution are as follows: After the moving contact is connected to the mounting cavity, the provided elastic element presses the moving contact against the mounting cavity. This not only fixes the moving contact but also applies additional pressure using the elastic element to reliably press the moving contact onto the stationary contact. This effectively solves the problem of poor contact that easily occurs in the prior art. Attached Figure Description

[0012] Figure 1 This is an exploded view of the main structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the moving contact assembly inside the housing.

[0014] Figure 3 This is an exploded structural diagram of the moving contact assembly of this utility model;

[0015] Figure 4 This is a schematic diagram of the internal structure of the housing of this utility model;

[0016] Figure 5 This is a schematic diagram of the main structure of the indicator of this utility model.

[0017] In the diagram: 1. Housing; 2. Handle; 3. Moving contact assembly; 30. Moving frame; 31. Linkage pin; 32. Mounting cavity; 33. Elastic element; 34. Moving contact piece; 4. Terminal block; 5. Stationary contact piece; 6. Support block; 7. Limit block; 8. Indicator; 80. Indicator plate; 81. Slide groove; 82. Spindle; 9. Slot; 10. Guide groove. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0019] Please see Figure 1-5This utility model provides an embodiment of a small disconnect switch, including a housing 1, terminals 4 installed on both sides of the housing 1, and a moving contact assembly 3 inside the housing 1; the moving contact assembly 3 includes a movable frame 30, a mounting cavity 32 in the middle of the movable frame 30, and a moving contact piece 34 inside the mounting cavity 32, the middle of the moving contact piece 34 abutting against the upper wall of the mounting cavity 32 through an elastic member 33; a stationary contact piece 5 is also provided inside the housing 1, one end of the stationary contact piece 5 is connected to the terminals 4, and a handle 2 provided on the housing 1 causes the moving contact piece 34 on the moving contact assembly 3 to contact or separate from the other end of the stationary contact piece 5, so as to realize the circuit connection or disconnection.

[0020] In summary, after the movable contact 34 is connected to the mounting cavity 32, the elastic element 33 presses the movable contact 34 against the mounting cavity 32. This not only fixes the movable contact 34 but also applies additional pressure using the elastic element 33, reliably pressing the movable contact 34 onto the stationary contact. This effectively solves the problem of poor contact that often occurs in existing technologies. The elastic element 33 is made of a thin, elastic steel plate, bent into a V-shape using sheet metal processing.

[0021] While ensuring reliable circuit operation, the device also provides an indication function. The device includes an indicator element 8; the indicator element 8 is rotatably connected to the housing 1 via a main shaft 82; one side of the main shaft 82 is connected to a linkage pin 31 on the movable frame 30 via a sliding groove 81, and the other side of the main shaft 82 is also provided with an indicator plate 80. Based on this, the connection between the linkage pin 31 and the sliding groove 81 allows the indicator plate 80 to swing inside the housing 1, thereby exposing the indicator markings on the indicator plate 80 through through holes on the side of the housing 1, facilitating real-time adjustment of the device's operating status by the user; the indicator markings can be directly referenced from existing technology.

[0022] Furthermore, since the slide groove 81 is arc-shaped, the linkage pin 31 can reliably drive the indicator 8 to rotate when it rotates, thus solving the problem of slippage that occurs when the linkage pin 31 slides in the inclined groove. At the same time, when the movable frame 30 moves upward, the indicator 8 rotates counterclockwise, thus improving the linkage effect between the movable frame 30 and the indicator 8.

[0023] Based on the above solution, since the housing 1 is also provided with a limiting block 7, and the moving contact piece 34 is restricted from moving upward by the limiting block 7, when the moving contact piece 34 moves upward and contacts the limiting block 7, the moving frame 30 can be prevented from continuing to move upward.

[0024] Meanwhile, the side of the stationary contact piece 5 away from the terminal 4 is inserted into the slot 9 provided on the limiting block 7, so the stationary contact piece 5 can be fixed by using the slot 9.

[0025] Furthermore, a support block 6 is provided inside the housing 1, and one end of the stationary contact piece 5 passes through the slot 9 and is connected to the support block 6. Therefore, the support block 6 can be used to further fix the stationary contact piece 5.

[0026] Based on this, the upward movement of the moving contact 34 is limited by the limiting block 7, and the stationary contact 5 is fixed by the support block 6 and the slot 9. Therefore, when the moving contact 34 moves downward, the stationary contact 5 will not move downward, thus ensuring reliable contact between the moving contact 34 and the stationary contact 5.

[0027] Furthermore, since the interior of the housing 1 is also provided with a guide groove 10 for guiding the movable frame 30 to slide in an directional manner, the movable frame 30 is guided to slide in an directional manner by the guide groove 10, so that the moving contact piece 34 can stably and accurately contact or separate from the stationary contact piece 5.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is clear to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A miniature disconnect switch, characterized in that: It includes a housing (1), wiring terminals (4) installed on both sides of the housing (1), and a moving contact assembly (3) is also provided inside the housing (1); The moving contact assembly (3) includes a movable frame (30), the movable frame (30) has a mounting cavity (32) in the middle, and a moving contact piece (34) is provided in the mounting cavity (32), and the middle part of the moving contact piece (34) abuts against the upper wall of the mounting cavity (32) through an elastic member (33). The housing (1) is also provided with a stationary contact piece (5), and one end of the stationary contact piece (5) is connected to the terminal block (4). The handle (2) provided on the housing (1) causes the moving contact piece (34) on the moving contact assembly (3) to contact or separate from the other end of the stationary contact piece (5) so as to realize the circuit is turned on or off.

2. A miniature disconnect switch according to claim 1, characterized in that: It also includes an indicator (8); the indicator (8) is rotatably connected to the housing (1) via a main shaft (82); one side of the main shaft (82) is adapted to the linkage pin (31) on the movable frame (30) via a sliding groove (81), and the other side of the main shaft (82) is also provided with an indicator plate (80).

3. A miniature disconnect switch according to claim 2, characterized in that: The slide (81) is arc-shaped, and when the moving frame (30) moves upward, the indicator (8) rotates counterclockwise.

4. A miniature disconnector according to claim 1, 2, or 3, characterized in that: The housing (1) is also provided with a limiting block (7) inside, and the moving contact piece (34) is restricted from moving upward by the limiting block (7).

5. A miniature disconnect switch according to claim 4, characterized in that: The stationary contact piece (5) is inserted into the slot (9) provided on the limiting block (7) on the side away from the terminal (4).

6. A miniature disconnector according to claim 5, characterized in that: The housing (1) is also provided with a support block (6), and one end of the static contact piece (5) passes through the slot (9) and is connected to the support block (6).

7. A miniature disconnector according to claim 6, characterized in that: The interior of the housing (1) is also provided with a guide groove (10) for guiding the movable frame (30) to slide in an directional manner.

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