CN203895291U - Switching device - Google Patents

Abstract

A switching device is disclosed and comprises an upper cover and a pedestal, the upper cover is provided with a switch button which move between a disconnecting position and a connecting position, the pedestal comprises a switch part and a wire connecting seat part, the wire connecting seat part is provided with a first wire connecting mechanism and a second wire connecting mechanism, one end of a first electric conduction sheet of the first wire connecting mechanism extends to the switch part and therefore a first fixed contact point corresponding to the a first moving contact point is formed, and a second electric conduction sheet of the second wire connecting mechanism downward runs through the wire connecting seat part and therefore a first plug pin is formed. The switch part is organically combined with the wire connecting seat part, and therefore the switching device is compact in structure, small in quantities of needed plug pins and reduced in manufacture cost.

Description

Switching device

Technical field

The utility model relates to a kind of switching device.

Background technology

For the break-make to circuit is controlled, switching device can be set in circuit in prior art conventionally.In some scenarios, switching device is arranged on circuit board by pin.In existing switching device, as shown in figure 10, switch module and Wiring module divide and are arranged, switch module is provided with four pin EE, FF, GG, HH, Wiring module is provided with four pin AA, BB, CC, DD, between each pin, connect by inside and/or or be connected outside connection, the disconnection of shift knob control moving contact and fixed contact and closure, thereby the break-make of control circuit.The above-mentioned switching device of prior art takies that volume is large, pin quantity is many, in the time being arranged on circuit board, need to take the circuit board space of a large amount of preciousnesses, simultaneously because pin quantity is many, complicated and the required solder joint of circuit board wiring is many, thereby installs complicatedly, and cost is high and reliability is low.

Utility model content

For the problems referred to above of the prior art, the purpose of this utility model is to provide a kind of switching device of compact conformation.The utility model is by being optimized design to inside connection and external structure, switch sections and wiring part are organically combined as a whole, thereby the volume of switching device and pin quantity are reduced, make in the time being arranged on circuit board, take that volume is few and wiring is simple, reduced cost and improved reliability.

Above-mentioned purpose can realize by following switching device, described switching device comprises upper cover and base, on described, cover and be provided with shift knob, described shift knob can move between open position and make position, it is characterized in that, described base comprises switch sections and junction block part, in described junction block part, be provided with the first wiring mechanism and the second wiring mechanism, described the first wiring mechanism comprises the first conducting strip, one end of described the first conducting strip is fixed in described junction block part and is suitable for being electrically connected with a utmost point of power supply, the other end of described the first conducting strip extends and is fixed on the upper surface of switch sections of base and on the described other end of described the first conducting strip and is provided with the first fixed contact, described the second wiring mechanism comprises the second conducting strip, one end of described the second conducting strip is fixed in described junction block part and is suitable for being electrically connected with another utmost point of power supply, the other end of described the second conducting strip is passed down through junction block part to form the first pin, on the upper surface of described switch sections, be also fixed with the 3rd conducting strip, the 4th conducting strip and the 5th conducting strip, on described the 3rd conducting strip, be provided with the second fixed contact, described the 3rd conducting strip is passed down through switch sections to form the second pin, described the 4th conducting strip and the 5th conducting strip are passed down through respectively switch sections to form the 3rd pin and four-limbed, in described switch sections, be also provided with operating mechanism, described operating mechanism comprises driver part, the first movable conducting strip and the second movable conducting strip, one end of the described first movable conducting strip is provided with the first moving contact matching with the first fixed contact, the other end of the first movable conducting strip is electrically connected with the 4th conducting strip by wire, one end of the described second movable conducting strip is provided with the second moving contact matching with the second fixed contact, the other end of the second movable conducting strip is electrically connected with the 5th conducting strip by wire, described driver part and shift knob are coupled, shift knob drives driver part motion, make in the time that shift knob moves to make position, the first moving contact and the second moving contact engage with the first fixed contact and the second fixed contact electricity respectively, in the time that shift knob moves to open position, the first moving contact separates with the second fixed contact with the first fixed contact respectively with the second moving contact.

Preferably, described switch sections and described junction block part are integrally formed.

Preferably, described junction block part is formed as the boss projecting upwards from the surface of described base.

Preferably, described the first wiring mechanism and the second wiring mechanism are all also provided with screw, pressing plate, nut and spring, the lower end abutment of described spring is being arranged on the bottom of the corresponding spring eye on described boss, stretch out from corresponding spring eye described spring upper end, described pressing plate is provided with supporting leg, described supporting leg is inserted in corresponding spring and then is inserted in corresponding spring eye, described nut is separately positioned in the corresponding nut bore on described boss, and described screw passes successively corresponding pressing plate and conducting strip and is screwed in corresponding nut.

Preferably, between described nut and corresponding conducting strip, be provided with insulation spacer.

Preferably, described driver part can be link-type driver part.

Preferably, described driver part comprises framework, actuator, connecting rod, underframe, the first torsion spring and the second torsion spring, on described base, be fixed with two fins that extend straight up, described framework is fixed between described two fins, described shift knob and actuator are coupled, the middle part of actuator is connected to framework by bearing pin and first torsion spring of horizontally set, the lower end of actuator and the upper end of connecting rod are hinged, lower end and the underframe of connecting rod are hinged, underframe is also connected to framework by bearing pin and second torsion spring of horizontally set, the first movable conducting strip and the second movable conducting strip are fixedly attached on underframe, actuator bottom is provided with laterally extending portion, in the time that described shift knob moves to described make position, described laterally extending portion is resisted against on framework.

Preferably, on cover and be also provided with hot fuse element, described hot fuse element has two pins that reach upper cover inside downwards, in described junction block part, be provided with five pin corresponding with described two pins and the 6th pin, the lower end of described the 5th pin and the 6th pin is passed down through the lower surface of junction block part, and in the time that described upper cover is fastened on described base, described two pins are electrically connected with the upper end of described the 5th pin and the 6th pin respectively.

Preferably, described the 5th pin and the 6th pin include the pin portion and the superposed clamping part that are positioned at lower end, and described pin portion stretches out downwards from the bottom of base, and described pin is respectively through corresponding clamping part clamped being fixed in described clamping part.

Preferably, described switching device also comprises two clamping elements, described clamping element all has elasticity and all has aperture, top and aperture, bottom, described pin inserts the aperture, top of corresponding clamping element from the top down, the aperture, bottom that described the 5th pin and the 6th pin insert corresponding clamping element from bottom to top, thereby pin is electrically connected with corresponding pin, and the elasticity of clamping element is maintained in clamping element pin and described the 5th pin and the 6th pin.

Preferably, on described the first conducting strip and the second conducting strip, be provided with the flank or the protuberance that stretch out towards hot fuse element, make heat more effectively be delivered to described hot fuse element.

Preferably, described switching device is high-voltage switch gear, near described the first fixed contact and the second fixed contact, is provided with arc-extinguishing unit, and described arc-extinguishing unit is magnet.

Preferably, the described other end of described the first conducting strip is divided into two parts and stretches out downwards and form two the 7th pins from the upper surface of the switch sections of base, thereby be fixed on reliably on described switch sections, on the lower surface of described base switch sections, be stamped cover plate, on described cover plate, have the aperture of passing through for described the second pin, the 3rd pin and four-limbed, and described cover plate covers described the 7th pin, the sidewall of described switch sections has in the position corresponding with described the 7th pin and prevents that cover plate and described the 7th pin from forming the recess of interfering.

Preferably, each pin of described switching device is suitable for being plugged on circuit board, described the first pin and described four-limbed, by the wiring electrical connection on wire or circuit board, are electrically connected with load by the wiring on wire or circuit board between described the second pin and described the 3rd pin.

Because the switch sections in switching device and wiring part are organically combined as a whole, therefore switching device compact conformation of the present utility model, in the time being arranged on circuit board, the space taking still less, and simplify the wiring on circuit board and reduced number of welds, thereby having reduced cost and improved reliability.

Brief description of the drawings

Fig. 1 is the stereogram of switching device of the present utility model;

Fig. 2 is the front view of switching device of the present utility model;

Fig. 3 is the stereogram from beneath of switching device of the present utility model;

Fig. 4 is the stereogram that switching device of the present utility model has removed upper cover;

Fig. 5 is the stereogram that switching device of the present utility model has removed another angle of upper cover;

Fig. 6 is the exploded view of switching device of the present utility model;

Fig. 7 is the wiring schematic diagram of switching device of the present utility model;

Fig. 8 is the circuit diagram of switching device of the present utility model;

Fig. 9 is the perspective view of the preferred implementation of the pin of the hot fuse element in switching device of the present utility model;

Figure 10 is the wiring schematic diagram of the switching device of prior art.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, further the utility model is described in detail.Should be appreciated that specific embodiment described herein is only for explaining the utility model, and be not used in the utility model is limited.

Fig. 1 shows the stereogram of switching device described in the utility model; Fig. 2 shows the front view of described switching device; Fig. 3 shows the stereogram from beneath of described switching device, wherein shows the layout of described switching device bottom pin; Fig. 4 and Fig. 5 show the internal structure of described switching device; Fig. 6 is the exploded view of described switching device.

As shown in Figure 6, switching device comprises upper cover 1 and base 2, and upper cover 1 and base 2 snap together and formed the complete housing of switching device.Upper cover 1 and base 2 can link together by any known manner.Preferably, upper cover 1 and base 2 can be fastened togather by projection and the aperture of the mutual correspondence that arranges in the side margins of upper cover and base.In addition, on upper cover 1, can also be provided with the reference column to downward-extension, the location hole passing is set on base 2, to facilitate the location of upper cover and base for reference column simultaneously.

Shift knob 3 is installed on upper cover 1, and described shift knob 3 is attached in the button openings of upper cover 1 by bearing pin, and shift knob 3 can be moved between on-position and open position.As shown in Figure 1, on upper cover 1, be also provided with the connection jaws corresponding with two wiring mechanisms of switching device 4,5, wherein two connection jaws 4 are arranged on the top of upper cover 1, so that butted line mechanism operates, for example be convenient to tighten and unscrew screw wiring mechanism, two connection jaws 5 are arranged on the sidewall of upper cover, are convenient to carry out wiring.On upper cover 1, be also provided with hot fuse element 21, described hot fuse element 21 has two pin 21a, 21b reaching upper cover inside downwards, and the effect of described hot fuse element 21 will be elaborated hereinafter.

In the utility model, for convenience of description, to in switching device, be called front side near a side of wiring mechanism and connection jaws, a side away from wiring mechanism and connection jaws is called to rear side, at upper cover 1 at upper, base 2 in lower in the situation that, observe towards described front side, left-hand side is called to the left side of switching device, right-hand side is called to the right side of switching device.The definition of above-mentioned front, rear, left and right is only used to convenient description, and conduct is not to restriction of the present utility model, and in fact, the position, front, rear, left and right of each parts can be exchanged completely mutually.

Base 2 comprises junction block part and switch sections, and described junction block part and switch sections are preferably integrally formed.But junction block part and switch sections also can form respectively and be fixed together.Connection Block part preferably forms with the form of boss, and the left side of described Connection Block part is provided with the first wiring mechanism 6, and the right side of described Connection Block part is provided with the second wiring mechanism 7.The first wiring mechanism 6 comprises pad, the first spring 63, the first conducting strip 64 and the first nut 27a between the first screw 61, the first pressing plate 62, described the first screw 61 and the first pressing plate 62, and this first wiring mechanism has formed binding post A.As Figure 4-Figure 6, the bottom of the first spring eye that the lower end abutment of described the first spring 63 arranges on described boss, stretch out from this first spring eye the upper end of described the first spring 63, described the first pressing plate 62 is provided with the first supporting leg, and this first supporting leg is inserted in the first spring and then is inserted in described the first spring eye.One end of described the first conducting strip 64 is fixed on boss and is arranged under the first pressing plate 62, described the first screw 61 is successively through described one end of the first pressing plate 62 and the first conducting strip 64 and be screwed to the described first nut 27a in the hole being arranged on described boss, and the other end of described the first conducting strip 64 extends and is fixed on the upper surface of switch sections of base 2 and on the described other end of described the first conducting strip 64 and is provided with the first fixed contact a.The second wiring mechanism 7 comprises pad, the second spring 73 and the second nut 27b between similar the second screw 71 of the first wiring mechanism 6, the second pressing plate 72, described the second screw 71 and the second pressing plate 72, described the second wiring mechanism 7 also comprises the second conducting strip 74, one end of described the second conducting strip 74 is fixed on boss and is arranged under the second pressing plate 72, and the other end of described the second conducting strip 74 is passed down through junction block part to form pin E.Being arranged so that in the time that the first and second screws are unscrewed of described the first and second springs, wiring mechanism resilience, thus be convenient to carry out wiring.Preferably, between the first conducting strip 64 and the first nut 27a and between the second conducting strip 74 and the second nut 27b, be provided with insulation spacer, described insulation spacer has prevented the ablation that may cause that electrically contacts between the first and second conducting strips and corresponding the first and second nuts.On the upper surface of the switch sections of described base 2, be also provided with on the 3rd conducting strip 8, the three conducting strips 8 and be provided with the second fixed contact c, described the 3rd conducting strip 8 is also passed down through switch sections to form pin C.In addition, on the upper surface of the switch sections of described base 2, be also provided with the 4th conducting strip 9 and the 5th conducting strip 10, the four conducting strips 9 and the 5th conducting strip 10 and be passed down through respectively switch sections to form pin B and pin D.

In described switch sections, be also provided with operating mechanism 11, described operating mechanism 11 comprises driver part, the first movable conducting strip 12 and the second movable conducting strip 13.One end of the described first movable conducting strip 12 is provided with the first moving contact a ' matching with the first fixed contact a, and the other end of the first movable conducting strip 12 is electrically connected with the 4th conducting strip 9 by wire.One end of the described second movable conducting strip 13 is provided with the second moving contact c ' matching with the second fixed contact c, and the other end of the second movable conducting strip 13 is electrically connected with the 5th conducting strip 10 by wire.Described driver part and shift knob 3 are coupled, and shift knob 3 drives driver part motion to make: in the time that shift knob 3 moves to make position, the first and second moving contacts engage with the first and second fixed contact electricity respectively; In the time that shift knob 3 moves to open position, the first and second moving contacts separate with the first and second fixed contacts respectively.Can use various driver part known in the art, for example, described driver part can be link-type driver part.Fig. 4-Fig. 6 shows an example of link-type driver part.Described driver part comprises framework 14, actuator 15, connecting rod 16, underframe 17, the first torsion spring 18 and the second torsion spring 19.The switch sections of described base comprises two fin 20a, 20b extending straight up, and framework 14 is fixed between two fin 20a, 20b.Shift knob 3 is coupled with actuator 15, between this groove being coupled on protuberance and the shift knob that for example can arrange by actuator upper lateral, coordinates realization, thereby the motion of shift knob will drive actuator to move thereupon.The middle part of actuator is connected to framework 14 by bearing pin and first torsion spring 18 of horizontally set, the upper end of the lower end of actuator and connecting rod 16 is hinged, the lower end of connecting rod 16 and underframe 17 are hinged, the also bearing pin by horizontally set and the second torsion spring 19 is connected to the movable conducting strip 12 of framework 14, the first and the second movable conducting strip 13 is fixedly attached on underframe 17 of underframe 17.In the time that actuator is locked in the position shown in Fig. 4-Fig. 5 due to the active force of torsion spring, the first and second moving contacts separate with the first and second fixed contacts.Move to clockwise and make this actuator in the time approaching vertical position from the position shown in Fig. 4-Fig. 5 when shift knob 3 drives actuator, the laterally extending portion that actuator bottom arranges is resisted against on framework and actuator can not further be moved, now the first and second moving contacts engage with the first and second fixed contacts, and the active force of torsion spring makes operating mechanism be locked in this position.

Carrying out cloth postpone recited above, the wiring of switching device is arranged will be as shown in Figure 7.Letter representation terminals or pin in Fig. 7, dotted line represents that internal electrical connects, solid line represents to be electrically connected and to be connected by outside.Fig. 8 shows with above-mentioned wiring and arranges corresponding circuit diagram.As can be seen here, in use, terminals A, will be electrically connected and be connected by outside between pin D and pin E for being connected respectively the both positive and negative polarity of power supply with pin E, between pin B and pin C, connect external loading.In use, each pin of switching device can be connected on circuit board, described outside electrical connection can realize by the wiring on circuit board.

On base 2, be also provided with two pin 22a, the 22bs corresponding with two pin 21a, 21b of hot fuse element 21.The upper end of pin 22a, 22b is electrically connected with pin 21a, 21b respectively in the time that upper cover 1 snaps together with base 2, and stretch out downwards from the bottom of base 2 lower end of pin 22a, 22b.For pin 21a, 21b are electrically connected with pin 22a, 22b respectively more reliably, described pin 22a, 22b are preferably designed for structure as shown in Figure 9, wherein, each pin 22a, 22b include the pin portion and the superposed clamping part that are positioned at lower end, described pin portion stretches out downwards from the bottom of base 2, described pin 21a, 21b pass respectively corresponding clamping part clamped being fixed in described clamping part, thereby are electrically connected with pin portion, and described clamping can complete by outer clamp.As an alternative, as shown in Figure 6, independent clamping element 26a, 26b also can be set, described clamping element has elasticity and has aperture, top and aperture, bottom, described pin 21a, 21b insert aperture, corresponding top from the top down, described pin 22a, 22b insert aperture, corresponding bottom from bottom to top, thereby pin 21a, 21b are electrically connected with corresponding pin 22a, 22b, and the elasticity of clamping element is maintained in clamping element pin 21a, 21b and pin 22a, 22b simultaneously.Hot fuse element makes switching device have hot deixis.When environment temperature is during higher than a certain threshold, the pin stretching out downwards from the bottom of base 2 is output abnormality signal, thereby prompting subscriber line circuit is overheated or break down.Preferably, on the first conducting strip 64 and the second conducting strip 74, be provided with the flank or the protuberance that stretch out towards hot fuse element, make the first conducting strip 64 and the more close hot fuse element of the second conducting strip 74 and its heat be delivered to more fully hot fuse element.

In the time that described switching device is used as high-voltage switch gear, near described the first fixed contact and described the second fixed contact, arc-extinguishing unit is set, described arc-extinguishing unit is preferably magnet 23, thereby effectively eliminates issuable electric arc between sound contact.

In a preferred embodiment, the described other end of described the first conducting strip 64 is divided into left and right two A ' of pin portion, thereby described two pin portions stretch out downwards the switch sections that is fixed on base 2 from the upper surface of the switch sections of base 2.Even if thereby said structure makes to produce the active force on the described other end that acts on the first conducting strip 64 in the case of producing electric arc between fixed contact and moving contact, the described other end of the first conducting strip 64 also can be securely fixed on base 2.On the lower surface of the switch sections of described base 2, be stamped cover plate 24, have the aperture of passing through for pin B, C and D on described cover plate 24, and described cover plate 24 covers pin A ', described cover plate can be protected above-mentioned two A ' of pin portion.The position corresponding with pin A ' of the sidewall of described switch sections has recess 25, and described recess 25 can prevent that cover plate 24 from forming and interfering with pin A '.

Above-mentioned switching device can be applied in any occasion that need to make circuit disconnection and closure, and as example, described switching device can be applied to field of solar energy, and circuit is played to folding effect.

The utility model is optimized design by the electrical connection to switching device inside and outside structure and the switch module in switching device and Wiring module is organically combined togather.Divide the existing switching device being arranged to compare with the switch module shown in Figure 10 and Wiring module, switching device volume of the present utility model is little, compact conformation, reduced the quantity that needs the pin using simultaneously, make the wiring on circuit board simpler, and correspondingly reduced the quantity of solder joint on circuit board, thereby improve the reliability of equipment and reduced cost.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing, combine, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model within spirit of the present utility model and principle.

Claims (14)

1. a switching device, comprise upper cover (1) and base (2), on described upper cover (1), be provided with shift knob (3), described shift knob (3) can move between open position and make position, it is characterized in that, described base (2) comprises switch sections and junction block part, in described junction block part, be provided with the first wiring mechanism (6) and the second wiring mechanism (7), described the first wiring mechanism (6) comprises the first conducting strip (64), one end of described the first conducting strip (64) is fixed in described junction block part and is suitable for being electrically connected with a utmost point of power supply, the other end of described the first conducting strip (64) extends and is fixed on the upper surface of switch sections of base (2) and on the described other end of described the first conducting strip (64) and is provided with the first fixed contact (a), described the second wiring mechanism (7) comprises the second conducting strip (74), one end of described the second conducting strip (74) is fixed in described junction block part and is suitable for being electrically connected with another utmost point of power supply, the other end of described the second conducting strip (74) is passed down through junction block part to form the first pin (E), on the upper surface of described switch sections, be also fixed with the 3rd conducting strip (8), the 4th conducting strip (9) and the 5th conducting strip (10), on described the 3rd conducting strip (8), be provided with the second fixed contact (c), described the 3rd conducting strip (8) is passed down through switch sections to form the second pin (C), described the 4th conducting strip (9) and the 5th conducting strip (10) are passed down through respectively switch sections to form the 3rd pin (B) and four-limbed (D), in described switch sections, be also provided with operating mechanism (11), described operating mechanism (11) comprises driver part, the first movable conducting strip (12) and the second movable conducting strip (13), one end of the described first movable conducting strip (12) is provided with the first moving contact of matching with the first fixed contact (a) (a '), the other end of the first movable conducting strip (12) is electrically connected with the 4th conducting strip (9) by wire, one end of the described second movable conducting strip (13) is provided with the second moving contact of matching with the second fixed contact (c) (c '), the other end of the second movable conducting strip (13) is electrically connected with the 5th conducting strip (10) by wire, described driver part and shift knob (3) are coupled, shift knob (3) drives driver part motion, make in the time that shift knob (3) moves to make position, the first moving contact and the second moving contact engage with the first fixed contact and the second fixed contact electricity respectively, in the time that shift knob (3) moves to open position, the first moving contact separates with the second fixed contact with the first fixed contact respectively with the second moving contact.

2. switching device according to claim 1, is characterized in that, described switch sections and described junction block part are integrally formed.

3. switching device according to claim 2, is characterized in that, described junction block part is formed as the boss projecting upwards from the surface of described base.

4. switching device according to claim 3, it is characterized in that, described the first wiring mechanism (6) and the second wiring mechanism (7) are all also provided with screw (61, 71), pressing plate (62, 72), nut (27a, 27b) and spring (63, 73), the lower end abutment of described spring is being arranged on the bottom of the corresponding spring eye on described boss, stretch out from corresponding spring eye described spring (63) upper end, described pressing plate is provided with supporting leg, described supporting leg is inserted in corresponding spring and then is inserted in corresponding spring eye, described nut is separately positioned in the corresponding nut bore on described boss, described screw passes successively corresponding pressing plate and conducting strip and is screwed in corresponding nut.

5. switching device according to claim 4, is characterized in that, between described nut and corresponding conducting strip, is provided with insulation spacer.

6. switching device according to claim 1, is characterized in that, described driver part is link-type driver part.

7. switching device according to claim 6, it is characterized in that, described driver part comprises framework (14), actuator (15), connecting rod (16), underframe (17), the first torsion spring (18) and the second torsion spring (19), on described base, be fixed with two fin (20a that extend straight up, 20b), described framework (14) is fixed between described two fins, described shift knob (3) is coupled with actuator (15), the middle part of actuator is connected to framework (14) by bearing pin and first torsion spring (18) of horizontally set, the upper end of the lower end of actuator and connecting rod (16) is hinged, the lower end of connecting rod (16) and underframe (17) are hinged, underframe (17) is also connected to framework (14) by bearing pin and second torsion spring (19) of horizontally set, the first movable conducting strip (12) and the second movable conducting strip (13) are fixedly attached on underframe (17), actuator bottom is provided with laterally extending portion, in the time that described shift knob moves to described make position, described laterally extending portion is resisted against on framework.

8. switching device according to claim 1, it is characterized in that, on upper cover (1), be also provided with hot fuse element (21), described hot fuse element (21) has two pin (21a that reach upper cover inside downwards, 21b), in described junction block part, be provided with five pin (22a) corresponding with described two pins and the 6th pin (22b), the lower end of described the 5th pin (22a) and the 6th pin (22b) is passed down through the lower surface of junction block part, and in the time that described upper cover is fastened on described base, described two pins are electrically connected with the upper end of described the 5th pin (22a) and the 6th pin (22b) respectively.

9. switching device according to claim 8, it is characterized in that, described the 5th pin (22a) and the 6th pin (22b) include the pin portion and the superposed clamping part that are positioned at lower end, described pin portion stretches out downwards from the bottom of base (2), and described two pins (21a, 21b) are respectively through corresponding clamping part clamped being fixed in described clamping part.

10. switching device according to claim 8, it is characterized in that, described switching device also comprises two clamping element (26a, 26b), described clamping element all has elasticity and all has aperture, top and aperture, bottom, described two pin (21a, 21b) insert from the top down the aperture, top of corresponding clamping element, the aperture, bottom that described the 5th pin (22a) and the 6th pin (22b) insert corresponding clamping element from bottom to top, thereby make described two pin (21a, 21b) be electrically connected with corresponding pin, the elasticity of clamping element makes described two pin (21a, 21b) be maintained in clamping element with described the 5th pin (22a) and the 6th pin (22b).

Switching device described in any one in 11. according to Claim 8-10, it is characterized in that, on described the first conducting strip (64) and the second conducting strip (74), be provided with the flank or the protuberance that stretch out towards hot fuse element, make heat more effectively be delivered to described hot fuse element (21).

12. switching devices according to claim 1, is characterized in that, described switching device is high-voltage switch gear, near described the first fixed contact and the second fixed contact, are provided with arc-extinguishing unit, and described arc-extinguishing unit is magnet.

13. switching devices according to claim 1, it is characterized in that, the described other end of described the first conducting strip (64) is divided into two parts and stretches out downwards and form two the 7th pins (A ') from the upper surface of the switch sections of base (2), thereby be fixed on reliably on described switch sections, on the lower surface of the switch sections of described base (2), be stamped cover plate (24), on described cover plate (24), have for described the second pin, the aperture that the 3rd pin and four-limbed pass through, and described cover plate (24) covers described the 7th pin (A '), the sidewall of described switch sections has in the position corresponding with described the 7th pin (A ') and prevents that cover plate (24) and described the 7th pin (A ') from forming the recess (25) of interfering.

14. switching devices according to claim 1, it is characterized in that, each pin of described switching device is suitable for being plugged on circuit board, described the first pin and described four-limbed, by the wiring electrical connection on wire or circuit board, are electrically connected with load by the wiring on wire or circuit board between described the second pin and described the 3rd pin.