CN1754240A

CN1754240A - Rotary switch comprising a switching shaft for an electrical appliance

Info

Publication number: CN1754240A
Application number: CN200480005078.7A
Authority: CN
Inventors: G·赖莫尔德; S·曼努斯
Original assignee: EGO Elektro Geratebau GmbH
Current assignee: EGO Elektro Geratebau GmbH
Priority date: 2003-02-24
Filing date: 2004-02-24
Publication date: 2006-03-29
Anticipated expiration: 2024-02-24
Also published as: CN100401440C; WO2004075226A1; DE10308450A1; PL205029B1; PL376927A1; EP1597742A1; EP1597742B1; ATE377838T1; DE502004005429D1; ES2297387T3

Abstract

According to one embodiment of the invention, a rotary switch (11) comprising a switching shaft (25) is created. Said switching shaft (35) is provided with a disk (27) which is used as a rotary stop and encompasses a projection (29) that is molded on so as to form a single piece therewith. An abutment (31) is provided as a rotary stop on a front wall (14) of the housing (12), the rotary stop being disposed in a compact and production-friendly manner on the front wall (14) of the rotary switch (11).

Description

The electrical equipment rotary switch that has switch spindle

The present invention relates to a kind of as claim 1 rotary switch that has switch spindle as described in the preamble.Similarly the switch spindle of rotary switch and rotary switch can be known from EP 1239504A1 or US 4,420,072.

Task of the present invention is, the described rotary switch that has switch spindle when a kind of the beginning is provided, the relative prior art of this rotary switch has been optimized and has been realized that especially a kind of simple proposal, task of the present invention also are to propose a kind of corner restriction or rotary spacing of switch spindle.

This task solves by a kind of rotary switch with claim 1 feature.The present invention favourable and preferred design be the theme of other claim and with following detailed description.The clause of claim is corresponding with the content of specification.

A kind of rotary switch has electric contact or analog according to the present invention, and these contacts are connected by a cam contour on the switch spindle.Described in addition rotary switch has a housing and at least one shell wall, and it is passed by switch spindle or switch spindle rotatably support therein.Described switch spindle has a projection, and this projection is arranged on the shell wall zone and is extending radially out.This projection is set at the zone in the shell wall outside especially, we can say outside the housing of rotary switch.Described in addition shell wall has a bearing.This bearing stretches into the surround orbit or the swing-around trajectory of projection and convexes to form a rotary spacing spare or a corner limited part for this.

This rotary spacing function provides following advantage by the transfer of putting shell wall in the rotary switch arbitrarily, can for example this bearing be fixed or integrally be molded on the described shell wall herein.Particularly advantageous in addition is if projection and bearing are arranged on the shell wall outside, just can provide more enclosure interior space, promptly said contact space.

In order to obtain the slewing area of a big as far as possible rotary switch, projection and/or bearing can extend on relatively little angle in a circumferential direction.This angle can approximately be 10 ° to 40 °, preferred 15 ° to 20 ° or 30 °.Can provide 360 ° of two angle sums that deduct projection and bearing as rotation space like this.

Integrally moulding is similar on shell wall with bearing, and projection also can integrally moulding on switch spindle or disc, and this disc is inserted on the switch spindle not rotatably support.A kind of such integral molding makes simple owing to it and advantages of higher stability has advantage.

Projection and/or bearing can be designed to have mutual tapered shape.They can be for example with point or not with sharp leg-of-mutton form.The advantage that they design like this is that they in a wide zone, are radially fitted mutually a fundamental region of extension at them when spacing especially.One of realization is so-called fully spacing like this.

Described bearing can design and moulding on shell wall like this, thereby it and shell wall are parts and spacing the overcoming of projection may be delivered in the shell wall on the supporting member of broad straight.If for example 10 ° to 25 ° angular deviation is arranged, here also be enough with direction straight.These also are considered as direction straight in the scope of application.By this way, bearing needn't be born all spacing power alone, and this power for example can cause bearing to shear.At first with relevant to projection or the spacing tapered shape of direction bearing, spacing power can be distributed on the shell wall better by a pedestal that has broadened.

The supporting member of bearing on shell wall can be microscler side bar.This microscler side bar also can extend on the normal direction that approximately is the switch spindle center of rotation and the bearing line of centres.Projection and/or susceptor design are that axial symmetry is favourable, thereby when two rotation directions are spacing, the supporting member of an aforesaid bearing can be arranged on shell wall.The all material (Vollmaterial) that it should be noted that bearing especially approximately extends along the direction of power.Described supporting member also can be reinforced by a force transmission element, and this force transmission element bears mutual spacing power on the supporting direction.This force transmission element should be as well as possible ground and being distributed on the face be fitted on the supporting member.Passable in addition is that this force transmission element is fitted on the shell wall and fixes on another supporting member and in the above.This mainly is beneficial to a force transmission element that be designed to become flexible or that separate.Can be by this system owing to the disposable independent maximum supporting force that can bear that improves of the quantity of supporting member with a plurality of supporting members.Can obtain desired power conduction or power in addition and distribute, it is used for better carrying out spacing.

For example can use a disc nut as force transmission element, as it through being usually used on a preceding dividing plate or support fixedly the rotary switch.Disc nut like this can be realized difunctional, promptly fixes and additionally support on the other hand described bearing on the one hand.

The switch spindle of rotary switch and/or housing or shell wall can be formed by plastic shaping.This can be undertaken diversely and moulding suitably by injection moulding process especially.Here at first thermoplastics is suitable.

For conserve space can be provided with a track, described projection is distributed in this track when its rotating switch main shaft, and this track can be designed to a concave shape of shell wall.This protruding track is lower than other shell wall.Described bearing advantageously designs high thickly in other words, and it is higher than track or depression and does not have the height of the shell wall of depression especially up to other.So also can obtain a consistent shell wall binding face.

The supporting member of bearing may be introduced and also be used as there to an above-mentioned disc nut by the back side of shell wall between two side bars.This depends on the design of rotary switch basically.

When shell wall is front side of housing of rotary switch is favourable.A common rotary switch is fixing on a support or dividing plate with it.Rotary spacing spare is to have only a short relatively part in the knob and the switch spindle between the rotary spacing spare of a fore side here in this regional advantage.Can bear king-sized power like this or on the contrary, switch spindle can have less intensity.

These and other feature of advantageous modification of the present invention also has explanation and accompanying drawing to show by claim in addition; wherein in embodiments of the present invention and those single features realization separately respectively in other field; or realize with the form of sub-combinations thereof more; and be favourable and, these have been required protection herein the execution mode of protection is arranged oneself.

One embodiment of the present of invention are schematically described in the accompanying drawings and are described in detail below.Fig. 1 shows the front view of a rotary switch in the accompanying drawing, and wherein switch spindle has a disc and a shell wall that has a projection and has an outstanding bearing.

In Fig. 1, a kind of rotary switch 11 has been described with front view.Housing 12 extends in the figure paper plane and comprises unshowned electrical switching contact.Can see an antetheca 14 of housing 12.Rotary switch 11 for example is installed in the back side of a preceding dividing plate of an electric stove or analog with this antetheca.

Antetheca 14 has the hole 16 of two spacing distances.These holes 16 are arranged in the holding tank 18.Disc nut 20 can be from top introducing holding tank 18.Disc nut 20 has a screwed hole 21.Here disc nut 20 is positioned at antetheca 14 back.Unshowned set bolt by the figure paper plane inwardly for example pass one aforesaid before dividing plate, antetheca 14 hole 16 and be engaged in the screwed hole 21 of disc nut 20.Thereby just finished the fixing of rotary switch 11.

Be provided with a sunk zone line 23 between this external hole 16.Side exceeds the part of sunk zone line 23 can be in the scope of for example a few millimeter, and for example 1mm is to 3mm.Supported a switch spindle 25 in a unshowned hole, it is a common switch spindle.On the switch spindle 25 of cross section, placed a disc 27 that has corresponding middle opening, made this disc connect un-rotatably with a non-circle.Disc 27 has a projection 29, this projection in Fig. 1 towards the right side.Disc 27 and projection 29 are integral types.

Replace one and form and can be inserted in disc 27 above it respectively with switch spindle 25, these two parts also can for example be made a part in a plastic injection-moulded process.

As seeing among Fig. 1, projection 29 fits on the bearing 31 rotating counterclockwise direction.If projection 29 is designed to a leg-of-mutton form of scabbling, bearing 31 is triangles of a point so.

Bearing 31 is formed by the supporting member 33 of two personal share shapes basically.They integrally carry out the transition to one first side bar 35 on the antetheca 14.

What recognize is that projection 29 is born by upper supporting part 33 on approximately vertically for the spacing power of bearing 31 or lower supporting part 33.Spacing power is delivered to another standing part or another zone that also also is delivered to antetheca on first side bar 35 thus except original and antetheca 14 are fixedly coupled separately to upper supporting part 33 with this at this.The bearing 31 and first side bar 35 bear spacing power together like this.

Passablely in addition be, when pushing disc nut 20, design it in holding tank 18 or and the cooperation of two

side bars

35 and 36, thereby it is evenly fitted with two side bars.The one-component of spacing like this power is delivered on second side bar 36 on right side by disc nut 20 by first side bar 35 in left side.Described second side bar also can for example link to each other with antetheca on the whole edge thickness of antetheca 14, thereby guarantees stable supporting.

Find out in addition that by Fig. 1 the angle range how to enable to use by the leg-of-mutton shape of selecting projection 29 and bearing 31 is very big.Be 360 ° at angle range described in Fig. 1 and deduct the arch angle that occupies on projection 29 the wide pedestals, promptly about altogether 330 ° at it.

By the design of the projection 29 and the symmetry of bearing 31, particularly bearing 31 can be realized a similar good position-limiting action in opposite rotation direction by the supporting scheme of disc nut 20 on two

side bars

35 and 36.

Stoped a bearing 31 that in sunk zone line 23, stretches out by antetheca 14 to be sheared by this supporting member by the spacing power of projection 29 solidly.This also can make bearing 31 relatively little and at first have little arch angle and extend.

Another kind at present embodiment improves in the structure, and a supporting member 33 can more gently extend on first side bar 35 of left side in the zone that projection 29 no longer is fitted on the supporting member.This draws with dotted line for upper supporting part 33.To so alternative extension, upper supporting part 33 extends along the force direction of spacing power straight, and this masterpiece is used on first side bar 35 of left side and therefore affacts another supporting member.

Another advantage that rotary spacing spare is arranged on the front area of rotary switch 11 is that spacing power can be delivered in the switch spindle 25 straight in a zone, this switch spindle can have high glass fibre share or high rigidity in this zone.The as close as possible operator of this locating part knob attempting rotating in addition.Last spacing power is also avoided cam disc and electrical switching contact thus away from the inner space of rotary switch 11.

Can use the member of relative thin-walled in addition.This is not only the disc 27 of a relative thin, and is the thin material thickness on the antetheca 14.

Claims

1. the rotary switch (11) that has a switch spindle (25), wherein this rotary switch has at least one electric contact that cam contour is connected by rotating switch main shaft (25), wherein rotary switch (11) has a shell wall (14), rotating switch spindle is passed this shell wall operation or is bearing in its inside, it is characterized in that, switch spindle has a projection (29), this projection outwards is arranged in shell wall (14) zone and is extending radially out, wherein this shell wall has a bearing (31,33), described bearing is given prominence in the surround orbit of projection (29) and is convexed to form the rotary spacing spare of a restriction rotation for this.

2. by the described rotary switch of claim 1, it is characterized in that projection (29) and/or bearing (31,33) can extend in a circumferential direction on little angle, preferred about 15 ° to 25 °.

3. by claim 1 or 2 described rotary switches, it is characterized in that the integrally moulding on switch spindle (25) or shell wall (14) of projection (29) and/or bearing (31,33).

4. by each described rotary switch in the aforementioned claim, it is characterized in that described projection (29) and/or bearing (31,33) are tapered to male-tapered ground, a preferred band point or not with sharp leg-of-mutton form.

5. by each described rotary switch in the aforementioned claim, it is characterized in that, design projection (29) and/or bearing (31,33), make they mutual when spacing a fundamental region of radially extension at them fit mutually.

6. by each described rotary switch in the aforementioned claim, it is characterized in that, design bearing (31,33) and go up moulding at shell wall (14), thereby this bearing carries out the transition to shell wall with wide supporting member on the spacing force direction integrally and on direction straight when approximately rotating, the preferred microscler side bar of wherein said supporting (35), this side bar extends on the roughly normal direction of the line of mutual locating part and switch spindle center of rotation.

7. by the described rotary switch of claim 6, it is characterized in that, the side bar of described supporting member (35) is strengthened in the upward mutual spacing power of bearing (31) for bearing projection (29) on the supporting direction by a force transmission element (20), wherein said force transmission element fits on another supporting member on the shell wall (14) or is fixed thereon, preferably on another side bar (36).

8. by the described rotary switch of claim 7, it is characterized in that this force transmission element is a disc nut (20), this nut is used for by a bolt rotary switch (11) being fixed on a preceding dividing plate or the support.

9. by each described rotary switch in the aforementioned claim, it is characterized in that described projection (29) is located on the disc (27) with medial concavity, this disc is fixed on the switch spindle (25) un-rotatably.

10. by each described rotary switch in the aforementioned claim, it is characterized in that the switch spindle (25) of rotary switch (11) and/or shell wall (14) are by plastics, the preferred thermoplastic plastics are made.

11. by each described rotary switch in the aforementioned claim, it is characterized in that, projection (29) when rotating around a track form by the form of shell wall (14) with the depression (23) of relative all the other shell walls, wherein the thickness of bearing (31) preferably roughly is equivalent to the degree of depth that caves in.

12. by each described rotary switch in the aforementioned claim, it is characterized in that shell wall (14) is a front side of housing (12), rotary switch (11) is fixed on a support or the dividing plate with this front side.