CN1910717A

CN1910717A - An electric switch assembly comprising an arc shield

Info

Publication number: CN1910717A
Application number: CNA2005800028487A
Authority: CN
Inventors: 彼得·查尔斯·巴登
Original assignee: Hager Electro SAS
Current assignee: Hager Electro SAS
Priority date: 2004-01-21
Filing date: 2005-01-20
Publication date: 2007-02-07
Anticipated expiration: 2025-01-20
Also published as: BRPI0506569A; TWI352367B; NZ547539A; TW200525572A; CN1910717B; EP1706881A1; AR047512A1; WO2005071706A1; MY137857A

Abstract

A switch dolly is provided with an attached internal arc shield to protect the dolly from damage.

Description

The electric switch unit that comprises arc shield

Invention field

The present invention relates to a kind of electric switch unit, relate to a kind of type of family expenses electric switch particularly, it is called as the switch of " button " type, and this switch is provided with the arc shield that the described button of protection is avoided damaging.

Background technology

The switch of type of button that is used for the family expenses electric switch is well-known.This switch typically comprises button (part of the switch of the finger contact of its behaviour).Button can rotate between " opening " position and off-position.The action of rotation causes switch connection and disconnection.Typically, switch comprises three electric contacts (positive pole, negative pole and ground), and switch also comprises the swing bridge fitting that comprises little shape metallic plate particularly.The rotation of button causes bridgeware to rotate between open position and position, pass.

Electric arc (sparklet) appears in the configuration of button and bridgeware when causing each console switch.Along with the past of time, electric arc by button fade or depression etc. can cause the damage of button.

Therefore, make a try, by inserting or providing arc shield protection button to avoid this damage.A kind of arc shield of known type comprises an intermediate member that is provided with the substantial rectangular of big central opening.Button is positioned on the opening, so that allow the push-botton operation bridgeware, and the remainder of arc shield protects the other parts of button to avoid the infringement that is caused by electric arc at this.A shortcoming of this arrangement is independent sector (arc shield) need be installed to switch case, then exactly navigation button so that make opening operation arc shield bridgeware that it can be by in arc shield.Another shortcoming is when the some parts of arc shield protection button, and the big central opening in arc shield can allow still that some infringements do not appear in the part of guarded button having rightly.

Therefore, do not have the arc shield of big central opening to provide protection, then can benefit shift knob if can utilize.

Obviously, if mention the prior art publication at this, this mentioning is not to recognize that described publication is formed in Australia or other national part common practise of the prior art.

Goal of the invention

The purpose of this invention is to provide a kind of switch module that can overcome some above-mentioned shortcomings at least partly or a kind of useful or commercial selection is provided to the client.

In an example, the invention reside in the button that is used for electric switch, this button comprises two parts at least, and a part comprises exterior section, and second portion comprises the arc shield that is positioned at first.

In this example, arc shield can be seen as the part that forms button, is not the complete independent parts that need independently install between button and switch case.

In another example, the invention reside in a kind of switch module, it comprise housing, at least one electric contact, establish by cable position and electricity close between the position movably bridgeware, at open position with close the bridge actuator assembly of travelling bridge fitting between the position and the button of operating this bridge actuator mechanism, described button is provided with arc shield.

In this example of the present invention, preferably, button comprises exterior section and interior section, and interior section comprises this arc shield.

The exterior section of button can comprise shell, and typically have convenient between the Kai Heguan position the flat or recessed top with the finger manipulation button, and from the top sagging sidewall.Typically, shell will be formed single part.The size of button and shape can change.In addition, the material of making button can change, but it should be noted that this material is general for the manufacturing of button.

Second portion (arc shield) typically comprises the interior section that is positioned at exterior section.Suitably, second portion is made by the material of protection exterior section.Give one example, although do not mean that specific restriction, interior section can be made by black nylon.

Button can be provided with the jockey that makes bridge actuator member be connected to button.Described jockey can comprise sleeve pipe or passage, and wherein an end of bridge actuator member can pass.Selectively, jockey can comprise the part or the member of any other type, so that catch, connect or move bridge actuator slidably.Typically, jockey comprises the short tube member that an end of bridge actuator member can pass.

Typically, button is pivotably connected to switch case, so that make button at open position with close between the position rotation or wave.For button, typically to be provided with a pair of radially relative rotating dog, its opening that passes switch case is so that according to the rotation mode catching press-button.This arrangement is known, but in the present invention, preferably, interior section is provided with radially relative rotating dog, because the better protection of the exterior section of button can be provided like this.Therefore, preferably, the exterior section of button (being shell) is provided with the opening or the device of recess, otch or other type, so that hold the rotating dog of interior section.

Interior section can be provided with the parallel rib member at a pair of interval, and preferably a pair of this rib member is set directly at the back of each rotating dog.

Bridge actuator member can comprise an elongate member, and it can be the shape of cylinder basically, and can be provided with round prenasal part.The aft section of described elongate member can be passed in the tubular element on the button.Typically, provide biasing device, so that the bias voltage bridge actuator member engages with bridgeware.Described biasing device can comprise spring.Spring can comprise helical spring.Biasing device can be arranged on after the aft section of bridge actuator member or near, preferably biasing device is positioned within the tubular element on the button at least partly.

Typically, bridgeware can comprise the little metallic plate of conduction.Typically, bridgeware is assemblied in and is used for pivoting action in the housing, and this arrangement is known.

The accompanying drawing schematic illustration

With reference to following accompanying drawing, embodiments of the invention are described.Wherein:

Fig. 1 is the front perspective view of button.

Fig. 2 is the rear view of button, and shows arc shield insert.

Fig. 3 is the partial view of button.

Fig. 4 is button " decomposition " figure.

Fig. 5 is the back perspective exploded view of the part of switch module, especially shows button, bridge actuator, bridgeware and the electric contact element of switch.

Fig. 6 is the preceding perspective exploded view of the switch of Fig. 5.

Fig. 7 is the preceding partial view that is assembled to the button of switch case.

Fig. 8 is the view according to the button of dashed lines of having of Fig. 7.

Best mode

At first, show the button 10 that has from roughly general in appearance shape with reference to Fig. 1-4.In certain embodiments, button 10 is made up of two parts, and this illustrates in Fig. 4 best, and these two parts comprise exterior section 11 and the interior section 12 that is counted as " shell ".Interior section 12 is installed in the exterior section 11, and this illustrates in Fig. 2 and Fig. 3 best.Interior section 12 is made up of black nylon, and plays arc shield, so that the chemoresistance to the infringement of exterior section 11 is provided.

Interior section 12 is provided with a pair of radially relative, outwardly directed pivotal pin 13.Therefore, exterior section 11 is formed with bigger curved notches 14 (see figure 4)s of holding pin 13.Pin 13 is assembled to bigger curved platform 15.When platform 15 enters recess 14, obtain a surface that flushes, this is tangible in Fig. 1 and Fig. 2.

Interior section 12 also comprises a pair of inboard directly that extend, isolated rib 30 after each pivotal pin 13 at interior section.

Interior section 12 is provided with in the little hollow boss of stretching out 16 shown in Fig. 2 and Fig. 3.Its purpose is explained below.

With reference to Fig. 5 and Fig. 6, show the part of aforesaid button 10 and switch module.Switch module comprises the housing 17 that is included in three electric contact 18-20 that illustrate best among Fig. 6.Such configuration is known.Bridgeware 21 is positioned and for good and all is connected to central contact 19.Bridgeware 21 can rotate, so that contact electric contact 18 or electric contact 20.This causes this assembly to move between " opening " position and off-position.The notion of bridgeware 21 is known in the prior art.Bridgeware 21 is by rotating between each position in the bridge actuator shown in Fig. 5 and Fig. 6 22.Driver 22 comprises the small cylindrical member with round prenasal part 23.The aft section of driver 22 has scalariform portion 24, so that hold an end of helical spring 25.The aft section of spring 25 and driver 22 is positioned at projection 16.Function spring 25 bias voltage drivers 22 engage with bridgeware 21.

Button 10 can position that driver 22 swing bridge fittings 21 engage with central contact 19 and with any position that engages of contact 18 or contact 20 between pivot.

Fig. 7 and Fig. 8 are the partial views of assembly drawing, and perhaps the mode according to dotted line shows button, so that clearly show that various elements.

Run through specification and claims, unless the other requirement of context, term " comprises (comprise) " or such as the various distortion of " comprising (comprises) " or " comprising (comprising) ", can be understood as and be suitable for the group who comprises described integral body or integral body, and do not get rid of other whole or whole group.

Run through specification and claims, unless the other requirement of context, term " basically " or " generally " can be understood as the value that is not limited to the term limited field.

Should be appreciated that under the situation that does not break away from the spirit or scope of the present invention and can carry out various modifications and variations described arbitrary embodiment.

Claims

1. button assembly that is used for electric switch, described assembly comprises two parts at least, and a part comprises exterior section, and second portion comprises arc shield, and this arc shield is located substantially in the first.

2. according to the described assembly of claim 1, wherein exterior section comprises shell, and this shell has top, sagging sidewall and the bottom of opening, and arc shield extends around the inwall at described top and the inwall of described sidewall basically.

3. according to the described assembly of claim 2, wherein said shell comprises a pair of radially relative recess, and described arc shield comprises a pair of radially relative pin that passes recess, and this pin is suitable for button is pivotably connected to switch case.

4. according to the described assembly of claim 3, wherein each described pin is positioned on the platform, this platform be configured to shell on recess fit so that between shell peace platform, provide the outer surface that flushes.

5. according to the described assembly of claim 3, wherein arc shield is provided with open-ended projection, so that hold the driver that is suitable for travelling bridge fitting in switch case.

6. a switch module comprises: housing; Electric contact in housing; Be pivotably connected to housing so that the bridgeware that contacts with electric contact; Comprise bridge actuator pin, that handle bridgeware; And button assembly, this button assembly comprises two parts at least, a part comprises exterior section, second portion is included in the arc shield in the first, described arc shield is pivotably connected to housing, and comprises open-ended projection, and this projection is held an end of described pin.