CN207896017U - A kind of dust and moisture formula list knife switch - Google Patents

Abstract

The utility model discloses a dust-proof and moisture-proof single-gate knife switch, which comprises a switch base, a semicircle shield with an integrated structure is fixedly arranged on the upper surface of the switch base, and an accommodating interlayer is arranged inside the semicircle shield, and the surface of one side of the semicircle shield is vertical A limit chute is opened in the direction, and the upper end of the gate knife rod is movably inserted in the limit chute. An insulating handle is fixedly installed on the upper surface of the gate knife rod, and a slide plate is fixedly connected to the surface of the upper end of the gate knife bar. Hold inside the mezzanine. In the utility model, when the gate knife rod and the electric contact card joint are engaged with each other, the sliding plate can completely seal the limit chute, which can prevent external dust and rainwater from entering the semicircular shield and the switch base, and the desiccant of the storage box can absorb The moisture in the switch base ensures the dryness of the switch base, improves the service life of the knife switch, and at the same time solves the phenomenon of poor contact of the knife rod due to unstable connection.

Description

A dust-proof and moisture-proof single switch knife switch

technical field

The utility model relates to the technical field of low-voltage switches, in particular to a dust-proof and moisture-proof single-blade switch.

Background technique

Knife switch is the most common device for separating or inputting loads in power lines at present, and it is widely used. A traditional knife switch usually includes a base, a handle, a knife lever, an electric contact card connector, an incoming wiring assembly, an outgoing wiring assembly, and a protective cover. The existing knife switch is located in a dusty and humid environment, and is affected by the dust and humid environment, which may easily cause the circuit breaker of the knife switch. There is poor contact between the tool holder and the electrical contact card connector.

Utility model content

The purpose of the utility model is to provide a dust-proof and moisture-proof single switch knife switch.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a dust-proof and moisture-proof single switch knife switch, including a switch base, the upper surface of the switch base is in an open state, and the upper surface of the switch base is fixedly provided with a semicircular guard with an integrated structure. Cover, the interior of the semicircular shield is provided with an accommodating interlayer, the surface of one side of the semicircular shield is vertically provided with a limit chute, the limit chute runs through the accommodating interlayer, and the middle part of the inner bottom surface of the switch base is fixedly installed with a support rod, The inner bottom surface of the switch base near the side of the limit chute is fixedly installed with an electric contact card joint. The upper end of the support rod is movably hinged with a gate knife rod. An insulating handle is fixedly installed, and a limited groove is provided on the surface of the insulating handle close to the limiting chute, and an iron sheet is fixedly installed on the surface of the other side of the insulating handle, and an inclined protrusion is fixedly installed in the middle of the upper surface of the semicircular shield. The surface of the inclined protruding block located on one side of the limit chute is fixedly equipped with a magnet, and the surface of the upper end of the knife rod is fixedly connected with a slide plate, and the slide plate is movably engaged in the storage interlayer, and the lower end of the slide plate is fixed There is a telescopic spring, and the lower end of the telescopic spring is fixedly connected to the bottom surface of the accommodating interlayer, and a storage box is fixedly installed on the inner side surface of the switch base, and the storage box is filled with desiccant, and the surface of the storage box is evenly opened with through holes .

Preferably, the electrical contact card joint and the support rod are flush with each other.

Preferably, the upper surface of the switch base is fixedly installed with a limiting protrusion on one side of the limiting chute, the diameter of the limiting protrusion is smaller than the inner diameter of the limiting groove, and the position of the limiting protrusion and the limiting groove flush with each other.

Compared with the prior art, the utility model has the advantages of:

1. There is a storage interlayer inside the semicircle shield, and a limit chute is vertically provided on the surface of one side of the semicircle shield. It is locked in the storage interlayer, and the storage box is filled with desiccant. When the utility model is in use, the switch knife bar is pulled down through the insulating handle. During the movement of the switch knife bar, the slide plate also moves in the storage interlayer. The knife rod and the electric contact card joint are engaged with each other, and when the electricity is connected, the slide plate can completely seal the limit chute, which can prevent external dust and rainwater from entering the semicircular shield and the switch base, and store the desiccant in the box It can absorb the moisture in the switch base, which ensures the dryness of the switch base and improves the service life of the knife switch;

2. The surface of the insulating handle close to the limiting chute is provided with a limiting groove, the surface of the other side of the insulating handle is fixedly installed with an iron sheet, the surface of the inclined protruding block located on the side of the limiting chute is fixedly installed with a magnet, and the switch base The upper surface is fixedly installed with a limit post on one side of the limit chute, and the lower end of the slide plate is fixedly connected with a telescopic spring, so that when the utility model pushes the gate, the iron sheet of the insulating handle and the magnet of the inclined protruding block are attracted to each other, which can To prevent the gate knife rod from sliding down in the limit chute, when the gate knife bar is engaged with the electric contact card joint, the limit groove of the insulating handle and the limit protrusion are engaged with each other and the action of the telescopic spring, The stability of the switch knife rod in the electric contact card joint is improved, and the phenomenon of poor contact of the switch knife rod due to unstable connection is solved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a cross-sectional view of a dust-proof and moisture-proof single-blade switch of the present invention.

Fig. 2 is a front view of a dust-proof and moisture-proof single switch of the utility model;

FIG. 3 is an enlarged schematic diagram of the structure at A in FIG. 1 .

In the figure: 1 switch base, 2 semicircular shield, 3 accommodating interlayer, 4 limit chute, 5 support rod, 6 gate knife rod, 7 insulating handle, 8 electric contact card connector, 9 slide plate, 10 telescopic spring, 11 tilt Protruding block, 12 magnet, 13 limit groove, 14 iron sheet, 15 limit post, 16 storage box, 17 through hole.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so that the protection scope of the utility model can be defined more clearly.

Referring to Fig. 1, Fig. 2 and Fig. 3, the utility model provides a dust-proof and moisture-proof single-blade switch, including a switch base 1, the upper surface of the switch base 1 is in an open state, and the upper surface of the switch base 1 is fixedly provided with A semicircular shield 2 with an integral structure, the interior of the semicircular shield 2 is provided with an accommodating interlayer 3, and the surface of the semicircular shield 2 is vertically provided with a limiting chute 4, and the limiting chute 4 penetrates through the accommodating interlayer 3. A support rod 5 is fixedly installed in the middle of the inner bottom surface of the switch base 1, and an electric contact card joint 8 is fixedly installed on the side of the inner bottom surface of the switch base 1 close to the limit chute 4, and the electric contact card joint 8 and the support rod 5 are mutually parallel together.

The upper end of the support rod 5 is movably hinged with a gate knife bar 6, and the upper end of the gate knife bar 6 is movably inserted in the limit chute 4, and an insulating handle 7 is fixedly installed on the upper surface of the gate knife bar 6, and the insulating handle 7 is close to the limit position. A limiting groove 13 is provided on the surface of one side of the chute 4, and the upper surface of the switch base 1 is fixedly installed with a limiting protrusion 15 on one side of the limiting chute 4, and the diameter of the limiting protrusion 15 is smaller than that of the limiting groove. 13, and the position of the limiting protrusion 15 and the limiting groove 13 are flush with each other.

The surface of the other side of the insulating handle 7 is fixedly equipped with an iron sheet 14, and the middle part of the upper surface of the semicircular shield 2 is fixedly equipped with an inclined protruding block 11, and the surface of the inclined protruding block 11 located at the side of the limit chute 4 is fixedly installed with a Magnet 12, a slide plate 9 is fixedly connected to one side surface of the upper end of the gate knife rod 6, and the slide plate 9 is movably engaged in the accommodating interlayer 3, and the lower end of the slide plate 9 is fixedly connected with a telescopic spring 10, and the lower end of the telescopic spring 10 is fixed Connected to the bottom surface of the storage interlayer 3 , a storage box 16 is fixedly installed on one side of the switch base 1 , the storage box 16 is filled with desiccant, and the surface of the storage box 16 is uniformly provided with through holes 17 .

Working principle: Pull down the switch knife bar 6 through the insulating handle 7. During the movement of the switch knife bar 6, the slide plate 9 also moves in the storage interlayer 3. When the switch knife bar 6 and the electric contact card joint 8 are engaged with each other, When the power connection is realized, the slide plate 9 can completely seal the limit chute 4, which can prevent external dust and rainwater from entering the semicircular shield 2 and the switch base 1, and the desiccant of the storage box 16 can absorb the switch base 1 The moisture inside ensures the dryness of the switch base 1. When the switch is pushed, the iron sheet 14 of the insulating handle 7 and the magnet 12 of the inclined protruding block 11 are attracted to each other, which can prevent the switch knife rod 6 from slipping in the limit position. Sliding occurs in groove 4.

Although the embodiment of the utility model has been described in conjunction with the accompanying drawings, the patent owner can make various deformations or modifications within the scope of the appended claims, as long as it does not exceed the protection scope described in the claims of the utility model, All should be within the protection scope of the present utility model.

Claims (2)

1. A dust-proof and moisture-proof single-blade switch, comprising a switch base (1), characterized in that: the upper surface of the switch base (1) is in an open state, and the upper surface of the switch base (1) is fixedly provided with a semicircle with an integrated structure Shield (2), the inside of the semicircular shield (2) is provided with an accommodating interlayer (3), and the surface of one side of the semicircular shield (2) is vertically provided with a limit chute (4), and the limit chute (4) It penetrates through the accommodating interlayer (3), the middle part of the inner bottom surface of the switch base (1) is fixedly installed with a support rod (5), and the inner bottom surface of the switch base (1) close to the side of the limit chute (4) is fixedly installed with an electric pole. The contact card joint (8), the upper end of the support rod (5) is movably hinged with the gate knife bar (6), and the upper end of the gate knife bar (6) is movably inserted in the limit chute (4), and the gate knife bar (6) An insulating handle (7) is fixedly installed on the surface of the upper end, and a limiting groove (13) is provided on the surface of the insulating handle (7) close to the limit chute (4), and the surface of the other side of the insulating handle (7) is fixedly installed with Iron sheet (14), the middle part of the upper surface of the semicircular shield (2) is fixedly equipped with an inclined protruding block (11), and the surface of the inclined protruding block (11) located at the side of the limit chute (4) is fixedly installed with A magnet (12), a slide plate (9) is fixedly connected to the surface of the upper end of the knife bar (6), the slide plate (9) is movably engaged in the storage interlayer (3), and the lower end of the slide plate (9) is fixedly connected There is a telescopic spring (10), the lower end of the telescopic spring (10) is fixedly connected to the bottom surface of the storage interlayer (3), and a storage box (16) is fixedly installed on the inner side surface of the switch base (1), and the storage box (16) is filled with desiccant, and the surface of the storage box (16) is uniformly provided with through holes (17), and the electric contact card joint (8) and the support rod (5) are flush with each other. 2. A dust-proof and moisture-proof single-blade switch according to claim 1, characterized in that: the upper surface of the switch base (1) is fixedly installed with a limiting post on the side of the limiting chute (4) ( 15), the diameter of the limiting protrusion (15) is smaller than the inner diameter of the limiting groove (13), and the position of the limiting protrusion (15) and the limiting groove (13) are flush with each other.