CN210006653U - kinds of new change-over switch - Google Patents

Abstract

The utility model relates to an novel change over switch, including casing, shifter and knob, the shifter set up in the casing, the shifter includes carousel, insulating piece and two pairs of contact pieces, carousel swivelling joint to in the casing, insulating piece sliding connection to in the casing, the carousel stirs through the driving lever insulating piece round trip movement, every right the contact piece all has elasticity and elastic contact, two pairs the contact piece set up respectively in the insulating piece both ends, the insulating piece inserts between every pair of contact piece, two pairs the distance between the contact piece is not more than the length of insulating piece, the contact piece all is connected through binding post and external circuit electricity, the knob passes casing fixed connection to on the carousel the technical problems that current change over switch is poor in the high humidity or high concentration dust environment such as mine.

Description

kinds of new change-over switch

Technical Field

The utility model relates to an electrical equipment field, more specifically, the utility model relates to an novel change over switches.

Background

The change-over switch is kinds of low-voltage switches for switching multiple circuits, and mainly rotates the knob to make the moving contact the static contact in turn to realize the function of switching circuit.

However, in a high-humidity environment or an environment with a large amount of metal dust (for example, in a mine), due to the influence of a magnetic field in some mines and the influence of a small distance between a moving contact and a fixed contact and high-humidity air or high-concentration metal dust, a phenomenon of short circuit and closing between a moving contact and a fixed contact which are open is generated, so that equipment failure or action disorder is caused, and life and property loss is caused.

Therefore, new types of switches are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aims at solving the problem that current change over switch can't be applicable to high humidity and high concentration metal dust environment.

According to the utility model discloses an aspects provide novel change over switches, including casing, shifter and knob, the shifter sets up in the casing, the shifter includes carousel, insulating piece and two pairs of contact pieces, carousel swivelling joint is in the casing, the insulating piece sliding connection is in the casing, the carousel stirs the insulating piece round trip movement through the driving lever, every pair of the contact piece all has elasticity and elastic contact, two pairs of the contact piece sets up respectively in the insulating piece both ends, the insulating piece inserts between every pair of the contact piece, the distance between two pairs of the contact piece is not more than the length of insulating piece, the contact piece all is connected with the external circuit electricity through binding post, the knob passes casing fixed connection on the carousel.

Through this scheme, the circuit is connected to binding post respectively on, the taking out of insulating piece makes contact piece contact each other switch on, the contact of the insertion separation contact piece of insulating piece to the disconnected power supply, this mode can avoid only having the air between the contact piece completely cut off, the short circuit phenomenon when having avoided the humidity in the air too big or metal dust concentration too big takes place, uses safe and reliable more.

Preferably, the contact piece has fixed length, and two contact pieces are arranged at fixed angle and contact each other to form pairs, and the end of the insulation piece is inserted into the contact position of the contact piece from the opening of the fixed angle.

Through this scheme, be convenient for the insertion of insulating piece to make the contact between the contact piece inseparabler.

Preferably, the width of the insulation sheet is larger than the width of the contact sheet.

Through this scheme, guarantee thoroughly to keep apart between the insertion messenger contact piece of insulating piece.

Preferably, insulation slots are formed in the upper surface and the lower surface of the insulation sheet, the contact sheet is arranged in the insulation slots, and the depth of each insulation slot is not smaller than the thickness of the corresponding contact sheet.

Through the scheme, the contact piece slides in the insulating groove, so that a guiding effect can be achieved; and the conduction of the two sides of the contact piece due to the adhesion of water drops or metal dust is avoided.

Preferably, the contact pieces are elastically connected to the inside of the shell through torsion springs, and the torsion springs apply force to enable the two contact pieces to rotate towards each other.

With this arrangement, step is further provided to enhance the contact tightness between the contact pieces.

Preferably, both ends of the insulation sheet are provided with contact windows, and the distance between the contact windows is not less than the distance between the two pairs of contact sheets.

Preferably, the side of the contact window close to the end of the insulation sheet has a thickness larger than the opposite side.

Through this scheme, the stroke restriction that makes the insulating piece is in the within range that decided, prevents to remove too big difficult playback.

Preferably, the end part of the insulation sheet is provided with two pressure-assisting plates which respectively extend to the upper part and the lower part of the contact window.

Through this scheme, the utilization helps the clamp plate to press and connect the contact, guarantees the reliability of contact between the contact piece.

The utility model discloses an technological effects lie in, this device simple structure can thoroughly separate the electricity between the contact piece and connect, can not receive humidity or metal dust concentration too big and influence insulating effect, safe and reliable more.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification , illustrate embodiments of the invention and together with the description , serve to explain the principles of the invention.

Fig. 1 is a schematic front view of a novel transfer switch according to the present invention.

Fig. 2 is a schematic diagram of a novel transfer switch test structure according to embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a switching mechanism in the novel transfer switch according to embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a novel transfer switch according to embodiment of the present invention when a transfer mechanism is shifted.

Fig. 5 is a schematic top view of the contact plate and the insulation sheet in the novel transfer switch according to embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view taken along line D-D in fig. 5.

Fig. 7 is a schematic top view of the contact plate and the insulating plate in the novel transfer switch according to the second embodiment of the present invention.

Fig. 8 is a schematic view of an end structure of an insulation sheet in the novel transfer switch according to the second embodiment of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least exemplary embodiments is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once a item is defined in figures, it need not be discussed further in in subsequent figures.

Example

As shown in fig. 1 to 6, the novel transfer switch of the present embodiment includes a housing 1100, a transfer mechanism disposed in the housing 1100, and a knob 1300, wherein the transfer mechanism includes a rotary disc 1210, an insulation sheet 1220 and two pairs of contact pieces 1230, the rotary disc 1210 is rotatably connected to the housing 1100, the insulation sheet 1220 is slidably connected to the housing 1100, the rotary disc 1210 moves the insulation sheet 1220 back and forth via a rod 1211, each pair of contact pieces 1230 has fixed elasticity and is in elastic contact, the two pairs of contact pieces 1230 are respectively disposed at two ends of the insulation sheet 1220, the insulation sheet 1220 is inserted between each pair of contact pieces 1230, the distance between the two pairs of contact pieces 1230 is not greater than the length of the insulation sheet 1220, the contact pieces 1230 are electrically connected to an external circuit via terminals 1110, the knob 1300 is fixedly connected to the rotary disc 1210 via the housing 1100, the contact pieces 1230 of the present embodiment is made of metal elastic pieces fixed elasticity, and the insulation sheet 1220 is made of an insulating material, such as an insulating plastic.

According to the scheme of the embodiment, the circuits are respectively connected to the wiring terminals 1110, the insulating sheet 1220 is pulled out to enable the contact pieces 1230 to be in contact conduction with each other, the insulating sheet 1220 is inserted to separate the contact of the contact pieces 1230, and therefore the power supply is disconnected, only air isolation between the contact pieces 1230 can be avoided, the short circuit phenomenon caused by overlarge humidity in the air or overlarge concentration of metal dust is avoided, and the use is safer and more reliable; the device has simple and novel structure and is suitable for severe environments such as mines and the like.

In this embodiment, a connection hole 1222 is disposed in the middle of the insulating sheet 1220, a hinge rod is disposed in the connection hole 1222, a long-strip-shaped hinge hole is disposed on the driving rod 1211, and the hinge rod passes through the hinge hole to connect the driving rod 1211 and the insulating sheet 1220. The knob 1300 is inserted into the dial 1210 through a square rod and held stationary.

In this embodiment or other embodiments, the contact pads 1230 have a length of , and the two contact pads 1230 are arranged at an angle of and contact each other to form pairs, and the ends of the insulating sheet 1220 are inserted into the contact points of the contact pads 1230 from the openings of the angle, so as to facilitate the insertion of the insulating sheet 1220 and make the contact between the contact pads 1230 more compact.

In this or other embodiments, the width of the insulating sheet 1220 is greater than the width of the contact sheet 1230. The insertion of the insulation sheet 1220 is ensured to completely separate the contact pieces 1230 from each other.

In this embodiment or other embodiments, the insulating sheet 1220 has insulating slots 1221 formed on both upper and lower surfaces thereof, the contact sheet 1230 is disposed in the insulating slots 1221, and the depth of the insulating slots 1221 is not less than the thickness of the contact sheet 1230. The contact sheet 1230 slides in the insulation groove 1221 and can play a role of guiding; and the conduction of both sides of the contact piece 1230 by the adhesion of water drops or metal dust is prevented.

In this or other embodiments, the contact pieces 1230 are resiliently coupled to the housing 1100 by a torsion spring (not shown) that applies a force to rotate the two pieces 1230 toward each other, and step enhances the contact tightness between the contact pieces 1230.

The technical effects of this embodiment lie in that this device simple structure can thoroughly separate the electric connection between the contact piece, can not receive humidity or metal dust concentration too big and influence insulating effect, safe and reliable more.

Example two

As shown in fig. 7 to 8, in the novel transfer switch of the present embodiment, in the contact of the above embodiment, contact windows 1223 are disposed at both ends of the insulating sheet 1220, the distance between the contact windows 1223 is not less than the distance between two pairs of the contact pieces 1230, and the thickness of the side of the contact window 1223 near the end of the insulating sheet 1220 is greater than the thickness of the other side of the contact window 1223 opposite to the side.

Through this embodiment, when the insulating sheet 1220 moves, the contact piece 1230 contacts through the contact window 1223, and the top of the contact piece 1230 abuts against the edge of the contact window 1223 near the end of the insulating sheet 1220, so that the stroke of the insulating sheet 1220 is limited within the range defined by , and the insulating sheet 1220 is prevented from moving too much and is not easy to return to the original position.

In this embodiment or other embodiments, the end of the insulation sheet 1220 is provided with two auxiliary pressing plates 1224, the two auxiliary pressing plates 1224 respectively extend above and below the contact window 1223, and an included angle is formed between the two auxiliary pressing plates 1224, so that the contact pieces 1230 can be pressed into the contact holes , and the tightness and reliability of the contact between the contact pieces 1230 can be ensured.

Although specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention.

Claims (8)

1. The novel change-over switch is characterized by comprising a shell, a change-over mechanism and a knob, wherein the change-over mechanism is arranged in the shell and comprises a turntable, an insulating sheet and two pairs of contact sheets, the turntable is rotationally connected into the shell, the insulating sheet is connected into the shell in a sliding mode, the turntable stirs the insulating sheet to move back and forth through a shifting rod, each pair of contact sheets are provided with fixed elasticity and are in elastic contact, the two pairs of contact sheets are respectively arranged at two ends of the insulating sheet and are inserted between the two pairs of contact sheets, the distance between the two pairs of contact sheets is not more than the length of the insulating sheet, the contact sheets are electrically connected with an external circuit through wiring terminals, and the knob penetrates through.
2. 2. The novel transfer switch of claim 1, wherein said contact pads are -length, and wherein two of said contact pads are disposed at an angle of and contact each other to form pairs, and wherein the ends of said insulating pads are inserted into the contact points of said contact pads from the openings of said angle.
3. 3. The novel transfer switch of claim 2, wherein the width of the insulating sheet is greater than the width of the contact sheet.
4. 4. The novel transfer switch of claim 3, wherein the insulating sheet has insulating grooves formed on both the upper and lower surfaces thereof, and the contact sheet is disposed in the insulating grooves, and the depth of the insulating grooves is not less than the thickness of the contact sheet.
5. 5. The novel transfer switch of claim 1, wherein the contact pieces are resiliently connected to the housing by a torsion spring, the torsion spring exerting a force to rotate the two contact pieces toward each other.
6. 6. The novel transfer switch of claim 1, wherein contact windows are provided at both ends of the insulating sheet, and the distance between the contact windows is not less than the distance between two pairs of the contact sheets.
7. 7. The novel transfer switch of claim 6, wherein the contact window has a greater thickness at the side near the end of the insulating sheet than at the opposing side.
8. 8. The novel transfer switch of claim 7, wherein two boost plates are disposed at the end of the insulation sheet and extend above and below the contact window.

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