CN2307353Y - Miniature rotary switch - Google Patents

Abstract

The utility model relates to a miniature rotary switch, which is used by household appliances. The utility model comprises a bottom housing 10 and a surface cover 20, a plurality of insertion bits 121 are arranged on one side wall of the bottom housing, the point of each right angle in the bottom housing is provided with a fixed connecting piece 30 respectively, each fixed connecting piece has four bending angles, wherein, the angle of a third bending angle is among 130 DEG to 140 DEG, the angle of a fourth bending angle is among 65 DEG to 85 DEG, a plurality of columnar small bulges 123 are arranged in the bottom housing, and the center of the bottom housing is provided with a rotary connecting piece 40 which is used for switching on or cutting off a circuit. The outline dimension of the utility model is only 25.4*25.4*6.9 mm, and the utility model can be widely used in various household appliances by the convenient, dexterous and microminiaturized structure.

Description

Miniature rotary switch

The utility model relates to a kind of appliance switch, particularly relates to the miniature rotary switch of a kind of household electrical appliances.

The plug-in type rotary switch is generally used for regulating the circuit of electric current, for example fan speed-regulating etc.

In the prior art, a kind of square plug-in type switch of frequent use, it is long to be 31.8mm, wide is 31.8mm, and thick is 10.2mm, and housing is made up of a spill drain pan and face-piece, rotation contact pin is at the drain pan center, and turn round handle by one and control, four flexible fastening contact pin of a cover place four corners of drain pan, and rotation is turned round handle and can be switched on or off one or several circuit.

Each fixed tabs is " z " font substantially, and there are two bent angles on its top, and the 3rd bent angle is in " Z " word centre position, and angle about 150 is spent, and three bent angles all can play the effect of counterpressure.Four column small embossments are arranged on the drain pan, place fixed tabs first corner during assembling, accurately put in place to guarantee to install.

Similarly the plug-in type rotary switch can find in United States Patent (USP) 2813158.Recently, someone thinks that this kind plug-in type rotary switch can do forr a short time, but after whole proportional the dwindling, actual effect can not be satisfactory, particularly fixed tabs work is moved easily, and rotation feel and insertion lead-in wire model are all different, that is to say, make rotary switch do forr a short time, need to solve many technical problems.

It is a kind of improved that the purpose of this utility model is to provide, and the littler but complete function of volume is easy to produce in batches and miniature rotary switch easy to use.

The purpose of this utility model can realize by following technical solution:

The utility model comprises drain pan 10 and cover 20, on base side walls, there are several to insert position (11), a fixed tabs 30 is equipped with at each place, right angle of drain pan, each fixed tabs comprises dead bolt position 31, connect position 32 and contact position 33, the dead bolt position forms first bent angle with being connected between the position, connect the position and contact formation second bent angle between the position, the interposition of each fixed tabs is equipped with one the 3rd bent angle, the place is provided with the 4th bent angle in the contact position, the drain pan center is provided with rotation contact pin 40, rotation contact pin links to each other with rotating handle 50, and cover is provided with installing hole (21), and main points of the present utility model are:

The angle of a, the 3rd bent angle is between 130-140 °, and the angle of the 4th bent angle is between 65-85 °;

In b, the drain pan or on the cover several column small embossments 123 are arranged, respectively there is a small embossment first and second corners of each fixed tabs, make it be difficult for moving to limit fixed tabs;

Around c, the drain pan center several strip projected parts are arranged, to withstand activity contact pin;

The overall dimension of d, miniature rotary switch is:

Long: 20-29mm

Wide: 20-29mm

Thick: 5-8mm

Above-mentioned overall dimension makes rotary switch do minimumly as far as possible.

Has a reinforcement on e, the cover at least, to improve its intensity.

The same with existing rotary switch, one " V " shape groove 39 is arranged in the dead bolt position of fixed tabs, be used for lead wire and correctly insert.

The utility model will insert line in use and insert through inserting the position, " V " shape groove of fixed tabs dead bolt position 31 makes the insertion line be in the centre position, provide simultaneously and good contact of inserting between line, when line is fully inserted into, it just is locked between " V " shape groove and the sidewall, if when having external force to pull outward, sidewall is pressed in dead bolt position 31, thereby draw tighter and tighter, can not get loose voluntarily.

By rotating rotating handle each contact position of rotation contact pin is contacted respectively with the position that contacts of fixed tabs, thereby switch on or off circuit.

Good effect of the present utility model is to have overcome technical difficulty, by positions such as fixed tabs well-designed being made this rotary switch microminiaturization, the pressure between line and rotation contact pin can be balancedly inserted in the change of fixed tabs angle, and can guarantee between fixed tabs and rotation contact pin, enough cushion spaces are arranged, provide simultaneously and the similar feel of traditional rotary switch.The utility model can be saved raw material, and is widely used in various household electrical appliance with its convenience, dexterity and microminiaturized structure.

Fig. 1 is a profile schematic diagram of the present utility model.

Fig. 2 is the utility model exploded sketch.

Fig. 3 is equipped with the amplification drain pan figure that fixed tabs and is inserted line.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

The utility model comprises drain pan 10 and cover 20, and drain pan 10 is made by plastic cement, and its structure as shown in Figure 2, it is spill, comprises square floor 11 and side plate 12, respectively is provided with two insertion positions 121 on two blocks of side plates therein, this insertion position is that fluting forms on side plate, is used to insert lead.The position is corresponding with inserting, at each place, right angle of drain pan a copper fixed tabs 30 is housed respectively, its shape and installation site are as shown in Figure 3, it is " Z " shape substantially, each fixed tabs comprises dead bolt position 31, connect position 32 and contact position 33, wherein the dead bolt position is contained in insertion position one end of drain pan, the contact position is contained in and rotates contact pin 40 contacted ends, the dead bolt position forms first bent angle 34 with being connected between the position, connect the position and contact formation second bent angle 35 between the position, the interposition of each fixed tabs is equipped with one the 3rd bent angle 36, in end, contact position the 4th bent angle 37 is arranged.In this example, the angle of the 3rd bent angle is about 135 °, and this bent angle can balancedly insert the pressure between line and rotation contact pin, and assurance and the similar feel of traditional rotary switch.The angle of the 4th bent angle is about 80 °, and when rotating handle rotated, it can guarantee enough cushion spaces between fixed tabs and rotation contact pin.One " V " shape groove 311 is arranged in the dead bolt position of fixed tabs, be used for lead wire and correctly insert.Being provided with a dividing plate 122 of one with it between per two insertion positions on the base side walls, four fixed tabs are separated from each other, can limit the position of fixed tabs on the one hand, can prevent sparking between fixed tabs on the other hand.Be provided with eight column small embossments 123 in drain pan, each small embossment is arranged near dividing plate 122 places, makes it to be enclosed in first and second bent angles of fixed tabs.It can guarantee that fixed tabs in use can not become flexible.

Be provided with rotation contact pin 40 at the center of rotary switch, its structure as shown in Figure 2, it ringwise, there are four contact positions 41 at its edge, these four contact positions contact with the position 33 that contacts of fixed tabs, play the effect that switches on or off circuit.This rotation contact pin is contained in the end of rotating handle 50.Described rotating handle 50 is made by plastic cement, and it is made of a handle 51 and the boss 52 that is located at its end, and rotation contact pin is contained on the end face of boss 52.The boss front central has a columnar projections (not shown), 111 li of the centre bores on the columnar projections insertion base plate 11.Rotating handle then passes the centre bore 21 on the cover 20, and stretches out outside the housing.Described cover as shown in Figure 1, respectively there is a projection position at its two ends, left and right sides, projection respectively has an installing hole 22 on the position, rotary switch can be installed on the plane of device therefor by installing hole.Several reinforcements 23 are arranged, to improve the intensity of cover on cover

Four strip projected parts 112 are arranged around at the drain pan center, and they withstand rotation contact pin 40, can or not vibrate because of heat during with assurance work to cause rotation contact pin come off.

Drain pan 10 and cover 20 can lump together by supersonic welding.

The utlity model has miniaturization structure, its overall dimension is:

Long: 25.4mm

Wide: 25.4mm

Thick: 6.9mm.

Claims (2)

1, the miniature rotary switch of a kind of household electrical appliances, comprise drain pan (10) and cover (20), on base side walls, there are several to insert position (121), a fixed tabs (30) respectively is equipped with at each place, right angle in the drain pan, each fixed tabs comprises dead bolt position (31), connect position (32) and contact position (33), the dead bolt position forms first bent angle (34) with being connected between the position, connect the position and contact formation second bent angle (35) between the position, the interposition of each fixed tabs is equipped with one the 3rd bent angle (36), be provided with the 4th bent angle (37) in the contact position, the drain pan center is provided with rotation contact pin (40), rotation contact pin links to each other with rotating handle (50), cover is provided with installing hole (22), it is characterized in that:

The angle of a, the 3rd bent angle is between 130-140 °, and the angle of the 4th bent angle is between 65-85 °;

In b, the drain pan or on the cover several column small embossments (123) are arranged, first and second corners of each fixed tabs respectively have one;

Several strip projected parts (112) are arranged around c, the drain pan center;

The overall dimension of d, miniature rotary switch is:

Long: 20-29mm

Wide: 20-29mm

Thick: 5-8mm.

2, miniature rotary switch according to claim 1 is characterized in that having at least on the cover reinforcement.

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