Protective device of knife switch

Abstract

The utility model discloses a protective device of a knife switch. The protective device comprises a bottom plate, a positioning hole, a protective shell, a knife switch dislocation opening, a protective shell cover plate, a knife switch baffle, a baffle pull block, a clamping block, a clamping plate and a rubber filling block. Compared with the prior art, the knife switch protection shell can be directly covered on a knife switch for use, the knife switch is clamped and protected in the protection shell, and the rubber filling block is used for clamping the knife switch, so that failure of the knife switch due to aging or damage of parts is avoided, and dust falling into the knife switch can be reduced; if overhaul and maintenance are needed, only the rubber filling block and the knife switch baffle plate need to be taken down.

Description

Technical Field

[0001] The utility model relates to the technical field of knife switches, in particular to a protective device for knife switches. Background Art

[0002] Knife switches are generally used for AC and DC low-voltage circuits not exceeding 500V that do not need to be frequently cut off and closed. Their operating current cannot exceed the rated value under the rated voltage. At present, knife switches are often used to power mechanical equipment or in remote mountain villages. Not only are they inconvenient to maintain and clean, but also due to the relatively simple manufacturing process, their internal components are easily damaged and cause the switch to malfunction, posing a major safety hazard. Utility Model Content

[0003] The purpose of the utility model is to provide a protective device for a knife switch to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including a bottom plate, a positioning hole, a protective shell, a gate knife dislocation opening, a protective shell cover plate, a gate knife baffle, a baffle pull block, a card block, a card plate, and a rubber filling block; the bottom plate is a rectangular plate, the center of its front side surface protrudes forward to form a protective shell, and three circular holes are respectively provided on the left and right sides of the protective shell; a protective shell cover plate is installed on the front side surface of the protective shell, and a gate knife dislocation opening is opened on the upper surface; a rectangular notch is opened in the center of the front side surface of the protective shell cover plate, a gate knife baffle is installed at the notch, and two card blocks are respectively installed on the left and right sides of the rear side surface; baffle pull blocks are installed on the upper and lower sides of the front side surface of the gate knife baffle, and two card plates are respectively installed on the left and right sides of the rear side surface; the rubber filling block is installed at the gate knife dislocation opening.

[0005] As a preferred technical solution of the utility model, the base plate, the protective shell and the blade baffle are all made of plastic, and the thickness thereof is not less than 5 mm.

[0006] As a preferred technical solution of the utility model, the protective shell cover plate and the gate knife baffle plate are both colorless and transparent, and the protective shell cover plate and the protective shell, and the protective shell cover plate and the gate knife baffle plate are all snap-on connected.

[0007] As a preferred technical solution of the utility model, the rectangular notch on the protective shell cover is connected to the gate knife offset opening, and its width is not less than half of the width of the protective shell.

[0008] As a preferred technical solution of the utility model, the clamping block and the clamping plate are symmetrically installed along the upper limit of the center of the blade baffle.

[0009] As a preferred technical solution of the utility model, the width of the rubber filling block is greater than the width of the gate blade dislocation opening.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model can be directly covered on the knife switch for use, the knife switch is locked and protected inside the protective shell, and the knife switch is clamped with a rubber filling block to prevent it from malfunctioning due to aging or damage of parts, and at the same time reduce dust from falling into the knife switch; if inspection and maintenance are required, only the rubber filling block and the knife switch baffle need to be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional diagram of the utility model Figure 1 ;

[0012] Figure 2 A three-dimensional diagram of the utility model Figure 2 ;

[0013] Figure 3 This is the front view of the utility model;

[0014] In the figure: bottom plate 1, positioning hole 2, protective shell 3, gate knife dislocation opening 4, protective shell cover 5, gate knife baffle 6, baffle pull block 7, clamp block 8, clamp plate 9, rubber filling block 10 DETAILED DESCRIPTION

[0015] Example 1

[0016] like Figures 1 to 3 As shown, the utility model discloses a protective device for a knife switch, comprising a bottom plate 1, a positioning hole 2, a protective shell 3, a knife dislocation opening 4, a protective shell cover plate 5, a knife baffle 6, a baffle pull block 7, a clamping block 8, a clamping plate 9, and a rubber filling block 10; the bottom plate 1 is a rectangular plate, the center of the front side surface of which protrudes forward to form a protective shell 3, and three circular holes are respectively arranged on the left and right sides of the protective shell 3; a protective shell cover plate 5 is installed on the front side surface of the protective shell 3, and a knife dislocation opening 4 is opened on the upper surface; a rectangular notch is opened in the center of the front side surface of the protective shell cover plate 5, a knife baffle 6 is installed at the notch, and two clamping blocks 8 are respectively installed on the left and right sides of the rear side surface; baffle pull blocks 7 are installed on the upper and lower sides of the front side surface of the knife baffle 6, and two clamping plates 9 are respectively installed on the left and right sides of the rear side surface; the rubber filling block 10 is installed at the knife dislocation opening 4. The base plate 1, the protective shell 3 and the knife baffle 6 are all made of plastic with a thickness of not less than 5 mm. The overall strength is certain and it is convenient to isolate dust. The protective shell cover 5 and the knife baffle 6 are both colorless and transparent, and the protective shell cover 5 and the protective shell 3, the protective shell cover 5 and the knife baffle 6 are all snap-on connections, so the knife switch status can be directly observed. The rectangular notch on the protective shell cover 5 is connected to the knife dislocation opening 4, and the protective shell cover 5 and the knife baffle 6 can be removed as needed.

[0017] The working principle of the utility model is as follows: when installing the utility model, first open a screw hole on the bottom plate of the knife switch, and cover the knife switch as a whole, and make the knife switch extend from the front side of the protective shell 3, then use the bolt to pass through the positioning hole 2 and lock the bottom plate 1 on the bottom plate of the knife switch, then snap the protective shell cover 5 on the front side of the protective shell 3, push the knife upward, then snap the knife baffle 6 on the protective shell cover 5, and make the card plate 9 and the card block 8 cooperate and snap, finally press the rubber filling block 10 into the knife dislocation opening 4, and squeeze it between the knife and the knife baffle 6, and finally it can be powered on normally. If inspection and maintenance are required, only the rubber filling block 10 and the knife baffle 6 need to be buckled down, and the knife can be easily put down. The baffle pull block 7 can assist in removing the knife baffle 6 for inspection.

[0018] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A protective device for a knife switch, characterized in that: The invention comprises a bottom plate (1), a positioning hole (2), a protective shell (3), a gate knife dislocation opening (4), a protective shell cover plate (5), a gate knife baffle plate (6), a baffle plate pull block (7), a clamping block (8), a clamping plate (9), and a rubber filling block (10); the bottom plate (1) is a rectangular plate, the center of the front side of which protrudes forward to form a protective shell (3), and three circular holes are respectively arranged on the left and right sides of the protective shell (3); a protective shell cover plate (5) is installed on the front side of the protective shell (3), and a gate knife dislocation opening (4) is opened on the upper surface; a rectangular notch is opened in the center of the front side of the protective shell cover plate (5), a gate knife baffle plate (6) is installed at the notch, and two clamping blocks (8) are respectively installed on the left and right sides of the rear side; baffle plate pull blocks (7) are installed on the upper and lower sides of the front side of the gate knife baffle plate (6), and two clamping plates (9) are respectively installed on the left and right sides of the rear side; the rubber filling block (10) is installed at the gate knife dislocation opening (4).

2. A protective device for a knife switch according to claim 1, characterized in that: The base plate (1), the protective shell (3) and the blade baffle (6) are all made of plastic, and their thickness is not less than 5 mm.

3. A protective device for a knife switch according to claim 2, characterized in that: The protective shell cover plate (5) and the gate blade baffle plate (6) are both colorless and transparent, and the protective shell cover plate (5) and the protective shell (3), as well as the protective shell cover plate (5) and the gate blade baffle plate (6) are all connected in a snap-fit ​​manner.

4. The protective device for a knife switch according to claim 1, characterized in that: The rectangular notch on the protective shell cover plate (5) is connected to the gate knife offset opening (4), and its width is not less than half of the width of the protective shell (3).

5. The protective device for a knife switch according to claim 1, characterized in that: The clamping block (8) and the clamping plate (9) are symmetrically mounted along the upper limit of the center of the blade baffle (6).

6. The protective device for a knife switch according to claim 1, characterized in that: The width of the rubber filling block (10) is greater than the width of the gate blade misalignment opening (4).

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