CN1249748C

CN1249748C - Switch device

Info

Publication number: CN1249748C
Application number: CNB2004100319600A
Authority: CN
Inventors: 田中稔启
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 2003-04-03
Filing date: 2004-03-31
Publication date: 2006-04-05
Anticipated expiration: 2024-03-31
Also published as: KR100549028B1; CN1536595A; JP2004311121A; TWI236028B; JP4256708B2; TW200506991A; KR20040086805A

Abstract

This invention provides a switch device with fewer components and capable of being operated easily. The movable contact (7) of the switch device supported by a lever unit (2) turns around in the cavity (1a) of the shell (1). Before turning the lever unit (2) the movable contact (7) touches one of the first or the second fixed terminal (4, 5). When we turn around the lever unit (2) the movable contact (7) touches both the first and the second fixed terminal (4, 5) to shift the switch of the circuit between the first and the second fixed terminal (4, 5).

Description

Switching device

Technical field

The present invention relates to a kind of switching device, a kind of switching device that can switch 2 switching circuits between the fixed terminal.

Background technology

Switching device in the past has the approximate rectangular shell of profile 21 as shown in Figure 7, and side is covered by sidewall 22 below the hollow sectors 21a that the inside of this shell 21 forms.

In the diagram of the above-mentioned hollow sectors 21a bight, right side of side nearby, lever 23 is extended support, the support portion 23a that forms on this lever 23, by support stick supports such as (not shown) supported on the 22a of the support portion of side plate 22, lever 23 is that fulcrum freely rotates with support portion 23a.

Be formed with on the above-mentioned lever 23 from press section 23b that support portion 23a extends left and the operating portion 23c that extends to the right, it is shaped as approximate ㄑ font.And press section 23b is positioned at blank part 21a, and operating portion 23c is from the blank part 21a formation that stretches out.

And, being equipped with sliding shoe 24 among the hollow sectors 21a of shell 21 inside, this sliding shoe 24 is subjected to the elastic force of helical spring 25 and is paid elastic acting force by the press section 23b of lever 23.And by the direction rotating operation lever 23 to arrow A, sliding shoe 24 can be along sliding on the rectilinear direction of the direction of compression helical spring 25.

And on lever 23, the size from support portion 23a to operating portion 23c is longer than the size from support portion 23a to press section 23b front end.

Therefore, even the power that is applied on the operating portion 23c of lever 23 is less, also can makes sliding shoe 24 easily overcome the elastic force of helical spring 25 and slide.

And in the pincerlike travelling contact portion 26 that sliding shoe 24 upper supports have that crooked metal sheet forms, this travelling contact portion 26 can slide with the slip of sliding shoe 24.

And the diagram left side of the hollow sectors 21a of shell 21 is open, and the support portion 27a of thin plate 27 can be installed at this open portion.

Above-mentioned thin plate 27 is made of resin material, with embedding method insulation such as moulding and supporting the 1st, the 2nd fixed terminal of being made by

metallic plate

28,29.

And, at the support portion of thin plate 27 27a, being formed with the 28a of contact portion, 29a to the 1st, the 2nd side-prominent

fixed terminal

28,29 of hollow sectors 21a one, their are with insulation division 27b insulation.The thickness of insulation division 27b between the above-mentioned contact 28a of portion, the 29a is identical with the 28a of contact portion, 29a.

And, support portion 27a is being supported on the thin plate 27 of the state on the shell 21, be formed with the root 27c in the hollow sectors 21a outside that is positioned at shell 21, from the both ends of this root 27c to the extended a pair of protection department 27d of diagram lower side, 27d.

From the middle body of the root 27c that clipped by above-mentioned a pair of

protection department

27d, 27d, to the equidirectional outstanding terminal lead division 27e that is formed with of protection department 27d.

Be drawn out to protection department 27d side at the portion of terminal 28b, the 29b that embed formation on the 1st, the 2nd fixed

terminal

28,29 that forms, and be exposed to this terminal extension 27e.And, can protect each portion of terminal 28b, the 29b that exposes with

protection department

27d, 27d.

Above-mentioned portion of

terminal

28b, 29b bend to approximate U word shape, can be connected with the plug (not shown) from the outside.

And, switching device in the past as shown in Figure 8, is subjected to the elastic force effect of helical spring 25 under the initial condition before the rotating operation lever 23, sliding shoe 24 is positioned at the diagram right side, is in the contacted state of the 28a of contact portion of travelling contact portion 26 and the 1st fixed terminal 28.

The action of the switching device in the past of this structure, the lever 23 that at first will be in initial condition shown in Figure 8 rotates to the direction of arrow A.

Like this, by the sliding shoe 24 that the press section 23b of leverage component 22 pushes, edge diagram direction linear slide left, compression helical spring 25.

When above-mentioned sliding shoe 24 slided, travelling contact portion 26 was also along identical direction linear slide.

So, the travelling contact portion 26 that contacts with the 28a of contact portion of the 1st fixed terminal 28, as shown in Figure 9, contact, switch the switching circuit between the 1st, the

2nd terminal

28,29 with two sides of the 29a of contact portion of the 28a of contact portion of the 1st fixed terminal 28 and the 2nd fixed terminal 29.

And, when releasing be applied on the operating portion 23e of lever 23 along the operating physical force of arrow A direction the time, sliding shoe 24 slides in the elastic force effect lower edge of helical spring 25 diagram right, and travelling contact 26 leaves the 29a of contact portion of the 2nd fixed terminal 29, and switching circuit automatically restores to initial condition.

[patent documentation 1]: Japan Patent is opened clear 63-20335 communique in fact.

But owing to the travelling contact portion 26 of above-mentioned switching device is in the past supported by sliding shoe 24, rotating lever 23 makes sliding shoe 24 linear slide, comes switching switch circuit, therefore has the many problems of amount of parts.

And, when lever 23 rotates, produce frictional force owing to sliding between press section 23b and the sliding shoe 24, exist being used as power of lever 23 to become big possibility.

And in order to reduce being used as power of lever 23, the length that makes the operating portion 23c that begins from support portion 23a is than long from the length of the press section 23b that support portion 23a begins, therefore, and the big problem of the switching device outer deformation of existence in the past.

Summary of the invention

The present invention is exactly in view of the above problems, and purpose provides a kind of amount of parts few, small-sized and reliability and the good switching device of operability.

As the 1st kind of scheme that is used for addressing the above problem, switching device of the present invention comprises: the 1st, the 2nd fixed terminal that sets in the blank part of portion in the enclosure mutual insulating; The travelling contact that can contact with two sides of above-mentioned the 1st, the 2nd fixed terminal; The leverage component that is supported freely to rotate by above-mentioned shell; Above-mentioned travelling contact freely rotates in above-mentioned enclosure under the state that is supported by above-mentioned leverage component, under the initial condition before above-mentioned leverage component rotates, above-mentioned travelling contact is in and the above-mentioned the 1st, a certain side's state of contact in the 2nd fixed terminal, when the above-mentioned leverage component of rotating operation, above-mentioned travelling contact and the above-mentioned the 1st, the two sides contact of the 2nd fixed terminal, switch the 1st, switching circuit between the 2nd fixed terminal, the above-mentioned the 1st, on the 2nd fixed terminal, form the contact portion that above-mentioned travelling contact slidably contacts respectively, this each contact portion forms circular-arc along the rotary motion trace of above-mentioned travelling contact.

Perhaps, as the 2nd kind of scheme that addresses the above problem, on above-mentioned travelling contact, form can with the 1st contact portion of the above-mentioned contact portion sliding contact of above-mentioned the 1st fixed terminal and can with the 2nd contact portion of the above-mentioned contact portion sliding contact of above-mentioned the 2nd fixed terminal; The contact portion of above-mentioned the 1st fixed terminal forms the above-mentioned contact minister than above-mentioned the 2nd fixed terminal, and is in above-mentioned the 1st contact portion state of contact common and above-mentioned travelling contact; When the above-mentioned leverage component of rotating operation, above-mentioned the 2nd contact portion of above-mentioned travelling contact is contacted with above-mentioned the 2nd fixed terminal.

Perhaps, as the 3rd kind of scheme that addresses the above problem, above-mentioned the 1st, the 2nd fixed terminal is made of tabular electroconductive member, above-mentioned travelling contact with above-mentioned the 1st, the 2nd fixed terminal contact portion separately under the state of clamping on its thickness of slab direction, can carry out above-mentioned sliding contact.

Perhaps, as the 4th kind of scheme that addresses the above problem, the elastic acting force of direction of the above-mentioned contact portion of above-mentioned the 2nd fixed terminal leaves in above-mentioned the 2nd contact portion that above-mentioned leverage component is subjected to above-mentioned travelling contact usually.

Perhaps, as the 5th kind of scheme that addresses the above problem, above-mentioned leverage component has and above-mentioned travelling contact can be rotated the body that freely is supported in the above-mentioned blank part, the thin plate that on above-mentioned shell, is equipped with, this thin plate can cover side's side of the opening of above-mentioned blank part, when the above-mentioned leverage component of rotating operation, the part of above-mentioned body and above-mentioned thin plate connect, and stop the rotation of above-mentioned leverage component.

Description of drawings

Fig. 1 is the exploded perspective view of switching device of the present invention.

Fig. 2 is the 2-2 line cutaway view of the relevant shell of the present invention.

Fig. 3 is the major part sectional stereogram of leverage component of the present invention.

Fig. 4 is the major part cutaway view of switching device of the present invention.

Fig. 5 is the major part cutaway view of the action of explanation switching device of the present invention.

Fig. 6 is the major part cutaway view of the action of explanation switching device of the present invention.

Fig. 7 is the exploded perspective view of switching device in the past.

Fig. 8 is the major part cutaway view of switching device in the past.

Fig. 9 illustrates the major part cutaway view of the action of switching device in the past.

Embodiment

The example of switching device of the present invention is described below with reference to the accompanying drawings.Fig. 1 is the exploded perspective view of switching device of the present invention, Fig. 2 is the 2-2 line cutaway view of the shell relevant with the present invention, Fig. 3 is the major part sectional stereogram of the leverage component relevant with the present invention, Fig. 4 is the major part cutaway view of switching device of the present invention, and Fig. 5, Fig. 6 are the major part cutaway view of the action of explanation switching device of the present invention.

At first, in the switching device 1 of 1 example of the present invention, as shown in Figure 1, be equipped with profile and form approximate shell 1 cubical, that constitute by resin material.As shown in Figure 2, be formed with the open blank part 1a of side's side of diagram lower side on this shell 1.

The blank part 1a of above-mentioned shell 1 is fenced up by peripheral part the 1st side plate 1b relative to each other, that area is big and the 2nd little side plate 1c of area and forms.

And cover with the top board 1d that is formed on diagram top the top of the hollow sectors 1a of shell 1, is formed with on this top board 1d to intert the lever inserting hole 1e of leverage component 2 described later.

On above-mentioned the 1st side plate 1b relative to each other, run through snap (ス Na ップ) hole 1f, the 1f that is formed with the lengthwise shape in its underpart side, in the outside of leaning on upper side than this snap hole 1f, 1f, run through to be formed with and to intert inserting hole 1g, the 1g of connecting elementss (not shown) such as socket, portion of terminal 4c, the 5c of the 1st, the 2nd

fixed terminal

4,5 described later are positioned at the blank part 1a of the part that is formed with this inserting hole 1g, 1g.

Be provided in the hollow sectors 1a of shell 1 and the leverage component 2 that freely rotates is made by resin material, at lower side formation body 2a, this body 2a has extended to form operating portion 2b obliquely upward certainly.

As shown in Figure 4, lever-inserting hole 1e of forming from the top board 1d of shell 1 of operating portion 2b interts to illustrated top and uses.

From the body 2a of the foundation of operating portion 2b part outstanding barrier 2c, the 2c that is formed with predetermined thickness and width of direction to the left and right.

In the diagram inboard of body 2a, run through to be formed with and to intert the supported hole 2d of support stick 3b of thin plate described later (ゥェ Ha) 3.And as shown in Figure 3, leverage component 2 is formed with the 1st blank part 2e that can take in elastic component 6 described later in the body 2a inside of the part that is formed with supported hole 2d.

And, in the diagram of the 1st blank part 2e side nearby, be formed with the 2nd blank part 2f that can take in, support travelling contact portion 7, in the lower sidewall side of the body 2a that constitutes the 2nd blank part 2f, be formed with a pair of inwardly outstanding supporting projections 2g, the 2g that forms.

And,, be formed with the 3rd blank part 2h that can place the 1st, the 2nd

fixed terminal

4,5 on the top of the 2nd blank part 2f.

On the sidewall of the body 2a that constitutes the 2nd blank part 2f, vertically be formed with slit groove 2j along diagram.

In shell 1, by opening, and be equipped with the thin plate 3 that can cover this open portion as side's side of the lower side of blank part 1a.This thin plate 3 is made by resin material, as the 1st fixed terminal 4 of public terminal with as the part of the 2nd fixed terminal 5 of independent terminals, by embedding that methods such as moulding are buried underground and supported and mutual insulating.

And,, be formed with the bar springs support portion 3b that can support elastic component 6 described later on this supporting walls 3a from the outstanding upward supporting walls 3a that forms of thin plate 3.

In the bottom of above-mentioned spring support portion 3b, form the 3c of spring support portion that section protrudes the semicircular shape, can with an end 6a Elastic Contact of elastic component 6 described later.

And, from the side of thin plate 3 outstanding be formed with can with the snap hole 1f of shell 1, protuberance 3d, the 3d that 1f combines.

Above-mentioned the 1st fixed terminal 4 is buried root 4a underground in the diagram inboard of thin plate 3 and is set, the 2nd fixed terminal 5 the diagram of thin plate 3 nearby a side bury root 5a underground and set.And, on the root 4a of the 1st fixed terminal 4 in burying thin plate 3 underground, in a diagram side nearby, with predetermined height be formed with 3 that project upwards from thin plate, bend to the circular-arc 4b of contact portion.And, the root 4a of the 1st fixed terminal 4, diagram by the inboard be formed with can attachment plug etc. the portion of terminal 4c of connecting elements (not shown), it is to be similar to the U word shape that this portion of terminal 4c is bent to form, and is the state that exposes upward from thin plate 3.

And, bury the root 5a of the 2nd fixed terminal 5 in the thin plate 3 underground, inboard in diagram, from the outstanding upward 5b of contact portion that is formed with of thin plate 3, the 4b of contact portion of this 5b of contact portion and the 1st fixed terminal 4 is adjacent, and with the 4b of contact portion of the 1st fixed terminal 4 equidirectional bend to circular-arc.

The height dimension of the 5b of contact portion of above-mentioned the 2nd fixed terminal 5 is lower than the 4b of contact portion of the 1st fixed terminal 4.That is, the 4b of contact portion of the 1st fixed terminal 4 forms longer than the 5b of contact portion of the 2nd fixed terminal 5.

And, the 2nd fixed terminal 5 leaves the diagram side nearby of the position of the 5b of contact portion clipping root 5a, the portion of terminal 5c that formation can be connected with connecting elements (not shown) such as plug, this portion of terminal 5c bends to the shape of approximate U word, becomes the state that exposes upward from thin plate 3.

Above-mentioned the 1st, the 2nd fixed

terminal

4,5, being formed on each 4b of contact portion, 5b and each portion of terminal 4c, 5c clips each

root

4a, 5a and divides on the position of opening, therefore, can prevent with connecting elementss such as plug be connected to portion of terminal 4c, the scattering foreign matters such as spark that produce when 5c is last are on each 4b of contact portion, 5b.

The 4b of contact portion, the 5b of above-mentioned the 1st, the 2nd fixed

terminal

4,5, the rotary motion trace of the aftermentioned travelling contact portion 7 in the 2nd hollow sectors 2f that takes in and be supported on leverage component 2 forms circular-arc.

And, on the 3b of the spring support portion of thin plate 3, can support the elastic component of making by the screw twisted spring 6, an end 6a of this elastic component 6 and the other end 6b derive with predetermined angle and are formed on the outside.

And, be in an end 6a of the elastic component 6 under the state that is supported by spring support portion 3b and the 3c of the spring support portion Elastic Contact of thin plate 3, the barrier 2c Elastic Contact on the other end 6b and leverage component 2 right sides, leverage component 2 are that fulcrum is subjected to elastic acting force upwards with supported hole 2d.

And, in the 2nd blank part 2f of leverage component 2, can take in the travelling contact 7 that the rubber-like metallic plate is bent to approximate コ word shape.

Above-mentioned travelling contact 7 has linking part 7a, 7b at both ends, be formed with tong-like tabular the 1st, the 2nd 7b of contact portion, 7c between this linking part 7a, 7b.

And, when travelling contact 7 is accommodated in the 2nd blank part 2f of leverage component 2, is held

projection

2g, 2g and supported its mobile restricted system.

Be supported on the interior travelling contact 7 of the 2nd blank part 2f of above-mentioned leverage component 2, rotating operation by leverage component 2,1st, the 2nd 7b of contact portion, 7c sandwich the tabular contact 4b of portion, the 5b of the 1st, the 2nd fixed

terminal

4,5, can carry out sliding contact along the circular-arc contact 4b of portion, 5b.

When the switching device of the 1st example of the present invention of assembling this structure, at first, support among the 2nd blank part 2f with travelling contact 7 insertion leverage components 2.

Then, elastic component 6 interted to be supported on methods such as embedding moulding be embedded with on the spring support portion 3b of thin plate 3 of the 1st, the 2nd fixed

terminal

4,5, and the supported hole 2d of leverage component 2 is inserted on the 3b of bar springs support portion, leverage component 2 is supported on the thin plate 3.

At this moment, in the 2nd blank part 2f of leverage component 2, take in advance and be supported with travelling contact 7.

Then, with the thin plate 3 of support lever member 2, from being inserted the hollow sectors 1a by open lower side of shell 1, then the operating portion 2b of leverage component 2 is punctured into the top from lever inserting hole 1e.

And meanwhile, the jut 3d of thin plate 3 combines with the snap hole 1f of shell 1, and as shown in Figure 4, the 1st 7b of contact portion of travelling contact 7 becomes the initial condition that contacts with the portion of terminal 4c of the 1st fixed terminal 4, is assembled into switching device of the present invention.

1st, the 2nd fixed

terminal

4,5 portion of terminal 4c, 5c separately is positioned near the inserting hole 1g of shell 1, when inserting connecting elementss such as plug the inserting hole 1g from the outside, is connected with each portion of terminal 4c, 5c.

The action of the switching device of the present invention that is assembled into like this is described.As shown in Figure 4, under preoperative initial condition, leverage component 2 rotates under the elastic force effect of elastic component 6 upward, and barrier 2c becomes the state that the top board 1d with shell 1 connects.

The 1st 7b of contact portion of the travelling contact 7 under this initial condition becomes the 4b of the contact portion state of contact with the 1st fixed terminal 4.

And, when the leverage component 2 under the rotating operation initial condition in the direction of arrow B, as shown in Figure 5, under the 4b of the contact portion state of contact of the 1st 7b of contact portion and the 1st fixed terminal 4, the 2nd 7c of contact portion of travelling contact 7 just contacts with the 5b of contact portion of the 2nd fixed terminal 5 with very little amount of spin.Thus, the 1st, the 2nd fixed

terminal

4,5 switches the switching circuit between the 1st, the 2nd fixed

terminal

4,5 by travelling contact 7 conductings.

The travelling contact portion 7 of this moment is in the 2nd blank part 2f of leverage component 2, and its activity is restricted, therefore, verily follow the rotating operation of leverage component 2 and rotate, so, even the rotating operation amount of leverage component 2 is less, also switching switch circuit positively.

And the leverage component 2 of rotating operation is because inertia force further rotates as shown in Figure 6, and travelling contact portion 7 descends along the circular-arc contact 4b of portion, the 5b of the 1st, the 2nd fixed

terminal

4,5.

When path increment that operating portion 2b descends predetermined, connect the rotation of prevention leverage component 2 with the inner face of thin plate 3 as the end of the part of the body 2a of leverage component 2.

After this, when removing the operational load of the leverage component 2 that applies along the arrow B direction, leverage component 2 automatically restores to initial condition as shown in Figure 4 under the elastic force effect of elastic component 6.Thus, the 2nd 7c of contact portion of travelling contact portion 7 leaves the 2nd fixed terminal 5, and switching circuit returns to initial condition.

As mentioned above, switching device of the present invention is owing to directly be supported on travelling contact portion 7 on the leverage component 2, therefore, do not need the sliding shoe 24 that illustrates in the example in the past, can reduce number of components and parts.

And along with the rotation of leverage component 2, travelling contact portion 7 also can verily rotate, and therefore, can reduce the deviation of the switching time of switching circuit.

The situation that the 1st 7b of contact portion of travelling contact portion 7 usually contacts with the 4b of contact portion of the 1st fixed terminal 4 has been described in the 1st execution mode of the present invention, but also can has been that the 2nd 7c of contact portion of travelling contact 7 contacts with the 5b of contact portion of the 2nd fixed terminal 5 usually.

That is, the present invention is under leverage component 2 is in initial condition before rotating, so long as either party state of contact in the travelling contact 7 and the 1st, the 2nd fixed

terminal

4,5 gets final product.

And, with metallic plate the 1st, the 2nd fixed

terminal

4,5 has been described, but the 1st, the 2nd fixed terminal also can be for example to implement gold-plated electroconductive member on the tabular resin material.

And, with being turned round helical spring elastic component 6 has been described, but elastic component 6 is so long as make its member of giving elastic acting force freely to rotate just passable to leverage component 2.

The invention effect

Under the original state of the leverage component of switching device of the present invention before rotation, the travelling contact place In with the 1st, the 2nd fixed terminal in some states that contacts, when the rotating operation leverage component The time, travelling contact and the 1st, the 2nd fixed terminal two sides contact, and switch the 1st, the 2nd stiff end On-off circuit between the son, therefore, travelling contact can directly be supported on the leverage component and switch On-off circuit does not need the in the past such sliding shoe of example, and the quantity that can cut down parts is carried Supply cheaply switching device.

And rotating operation lever under the state that directly supports travelling contact is therefore with littler Active force just can the rotating operation leverage component, and operability is good.

And, on the 1st, the 2nd fixed terminal, form respectively travelling contact and can carry out sliding-contact Contact section, this each contact section forms the circular arc shape along the rotary motion trace of travelling contact, therefore, Can be really and stably carry out handover operation.

And, because the contact section of the 1st fixed terminal is than the contact minister of the 2nd fixed terminal, can The 1st contact section of movable contact always is in contact condition, and when the rotating operation leverage component, making can The 2nd contact section of movable contact contacts with the 2nd fixed terminal, therefore, with littler leverage component The rotation amount is switching switch circuit positively just, can provide reliability and operability good switch Device.

And, because travelling contact can sandwich the 1st, the 2nd fixed terminal separately in the thickness of slab direction The state of contact section carry out sliding-contact, so travelling contact by with the 1st, the 2nd stiff end The two sides sliding-contact of the thickness of slab direction of son can make travelling contact and the 1st, the 2nd fixed terminal Positively contact and conducting.

And, because the 2nd contact section that leverage component is always pushed to travelling contact by elasticity leaves the The direction of the contact section of 2 fixed terminals, so can make the leverage component behind the rotating operation automatically extensive Multiple, operability is good.

And, because when the rotating operation leverage component, a part and the thin plate of the body of leverage component connect, stop the rotation of leverage component, therefore can provide operability good switching device.

Claims

1, a kind of switching device is characterized in that, comprising: the 1st, the 2nd fixed terminal that sets in the blank part of portion in the enclosure mutual insulating; The travelling contact that can contact with two sides of above-mentioned the 1st, the 2nd fixed terminal; The leverage component that is supported freely to rotate by above-mentioned shell;

Above-mentioned travelling contact freely rotates in above-mentioned enclosure under the state that is supported by above-mentioned leverage component, under the initial condition before above-mentioned leverage component rotates, above-mentioned travelling contact be in above-mentioned the 1st, the 2nd fixed terminal in a certain side's state of contact,

When the above-mentioned leverage component of rotating operation, above-mentioned travelling contact contacts with two sides of above-mentioned the 1st, the 2nd fixed terminal, switches the switching circuit between the 1st, the 2nd fixed terminal,

On above-mentioned the 1st, the 2nd fixed terminal, form the contact portion that above-mentioned travelling contact slidably contacts respectively, this each contact portion forms circular-arc along the rotary motion trace of above-mentioned travelling contact.

2, switching device as claimed in claim 1, it is characterized in that, on above-mentioned travelling contact, form can with the 1st contact portion of the above-mentioned contact portion sliding contact of above-mentioned the 1st fixed terminal and can with the 2nd contact portion of the above-mentioned contact portion sliding contact of above-mentioned the 2nd fixed terminal; The contact portion of above-mentioned the 1st fixed terminal forms the above-mentioned contact minister than above-mentioned the 2nd fixed terminal, and is in above-mentioned the 1st contact portion state of contact common and above-mentioned travelling contact; When the above-mentioned leverage component of rotating operation, above-mentioned the 2nd contact portion of above-mentioned travelling contact is contacted with above-mentioned the 2nd fixed terminal.

3, switching device as claimed in claim 1, it is characterized in that, above-mentioned the 1st, the 2nd fixed terminal is made of tabular electroconductive member, above-mentioned travelling contact is clamped under the state of this contact portion on the thickness of slab direction of above-mentioned the 1st, the 2nd fixed terminal contact portion separately, can carry out above-mentioned sliding contact.

4, switching device as claimed in claim 2 is characterized in that, the elastic acting force of direction of the above-mentioned contact portion of above-mentioned the 2nd fixed terminal leaves in above-mentioned the 2nd contact portion that above-mentioned leverage component is subjected to above-mentioned travelling contact usually.

5, switching device as claimed in claim 1, it is characterized in that, above-mentioned leverage component has and above-mentioned travelling contact can be rotated the body that freely is supported in the above-mentioned blank part, on above-mentioned shell, be equipped with thin plate, this thin plate can cover side's side of the opening of above-mentioned blank part, when the above-mentioned leverage component of rotating operation, the part of above-mentioned body and above-mentioned thin plate connect, and stop the rotation of above-mentioned leverage component.