A dual-purpose switch for small household appliances

Abstract

A small household appliance rotary and press dual-use composite switch, characterized in that: it includes a circular base, a limiting ring is arranged on the outer cylinder of the base, a mounting seat is upwardly protruded in the middle of the base, and a limiting groove is formed between the mounting seat and the base in a partially hollowed-out manner; a circuit board is mounted in the mounting seat, a button switch is arranged at the upper end of the circuit board, a potentiometer is mounted at the lower end of the circuit board, a rotating lever is mounted on the control shaft of the potentiometer, and the other end of the rotating lever extends upward through the limiting groove; the rotary and press dual-use composite switch has the beneficial effects that the rotary control and the button control are combined on the same switch, the rotary control and the button control have dual functions, the application range is improved, and the use requirements are met.

Description

TECHNICAL FIELD

[0001] The present application relates to a switch, in particular to a small household appliance rotary and press dual-purpose composite switch. BACKGROUND

[0002] With the continuous development of society, electronic products are rapidly updated and iterated. In the current electronic products, various different switches need to be used, among which the rotary switch is one of the most commonly used products. The rotary switch is a kind of switch that sends different signals to the circuit board by rotating the rotary knob or pressing the cover of the rotary knob, so that the circuit board controls the start-stop, direction adjustment, position adjustment, running speed and other functions. However, the existing rotary switch has many internal parts, making the overall structure very complex, resulting in high cost. Therefore, it is necessary to make further improvement. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art and provide a small household appliance rotary and press dual-purpose composite switch with simple structure and convenient use, which can realize rotary control function and button control function.

[0004] The purpose of the present application is achieved in the following way: a small household appliance rotary and press dual-purpose composite switch, characterized in that it comprises a circular base, a limiting ring is arranged on the outer cylinder of the base, and a mounting seat is arranged on the middle part of the base and protrudes upward, and a limiting groove is formed between the mounting seat and the base.

[0005] The mounting seat is installed with a circuit board, the upper end of the circuit board is provided with a button switch, and the lower end of the circuit board is installed with a potentiometer, the control shaft of the potentiometer is installed with a toggle lever, and the other end of the toggle lever extends upward through the limiting groove.

[0006] The upper end of the base is covered with a rotary cover, the inner end face of the rotary cover is provided with an elastic buckle, the elastic buckle is buckled under the limiting ring to limit the axial movement of the rotary cover, a connecting groove is arranged on the inner hole of the rotary cover, the connecting groove is buckled on the toggle lever, and the rotary cover is driven to rotate the potentiometer through the toggle lever.

[0007] The middle part of the rotary cover is hollow to form a button cavity, a button cover is installed in the button cavity, the bottom of the button cover is carried above the button switch, and an anti-falling ring is outwardly protruded on the outer circle of the bottom of the button cover, and the diameter of the anti-falling ring is greater than the diameter of the button cavity.

[0008] The bottom of the mounting seat is connected to the base through a plurality of supporting columns, the height of the mounting seat is higher than the upper plane of the base, and the gap between the supporting columns forms the limiting groove.

[0009] A plurality of elastic supporting columns are arranged on the mounting seat, and the top of the elastic supporting column is connected to the bottom of the button cover.

[0010] The toggle lever is arranged on the outer cylindrical surface of the guide ring, and the middle part of the guide ring is provided with a connecting shaft which is axially connected with the control shaft of the potentiometer.

[0011] The cylindrical surface of the button cover is provided with a rotation-stopping lever which is buckled into the clamping groove in the base.

[0012] The present application has the following advantages: 1. simple structure, low production cost and high market competitiveness; 2. the combination of the rotary knob control and the button control in the same switch makes the switch have the dual functions of the rotary knob control and the button control, thereby improving the application range and meeting the use requirements; 3. the unique double-layer structure realizes the dual matching requirements of the potentiometer and the switch, and through the scheme design, the first defect of the encoding scheme without reference point is solved, the cost is greatly lower than that of the encoder, and the functional requirements and the appearance design are also considered. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The figure is a general assembly drawing of the present application.

[0014] Figure 2 、 3 , 4 is a structural assembly drawing of the present application.

[0015] Figure 5 The figure is a structural sectional view of the present application. DETAILED DESCRIPTION

[0016] The present application will be further described in detail below with reference to the drawings. A small household appliance rotary and button dual-use composite switch is characterized in that: it comprises a circular base 1, a limiting ring 11 is arranged on the outer cylinder of the base 1, a mounting seat 12 is upwardly protruded in the middle part of the base 1, and the mounting seat 12 and the base 1 are partially hollowed to form a limiting groove 13 therebetween;

[0017] The mounting seat 12 is internally mounted with a circuit board 2, the upper end of the circuit board 2 is provided with a button switch 21, the lower end of the circuit board 2 is mounted with a potentiometer 22, the control shaft of the potentiometer 22 is mounted with a toggle lever 23, and the other end of the toggle lever 23 extends upwardly through the limiting groove 13;

[0018] The upper end of the base 1 is covered with a rotary cover 3, the inner end face of the rotary cover 3 is provided with an elastic buckle 31, the elastic buckle 31 is buckled and pressed below the limiting ring 11 to limit the axial movement of the rotary cover 3, a connecting groove 32 is arranged on the inner hole of the rotary cover 3, the connecting groove 32 is buckled on the toggle lever 23, and the rotary cover 3 is rotated to drive the potentiometer 22 to rotate through the toggle lever 23;

[0019] The hollow button cavity 33 is formed in the middle of the rotary cap 3, and the button cap 4 is installed in the button cavity 33, the bottom of the button cap 4 is supported above the button switch 21, and the outer circle of the bottom of the button cap 4 is outwardly protrudingly provided with an anti-falling ring 41, and the diameter of the anti-falling ring 41 is greater than the diameter of the button cavity 33.

[0020] The bottom of the mounting seat 12 is connected to the base 1 through a plurality of supporting columns, the height of the mounting seat 12 is higher than the upper plane of the base 1, and the gap between the supporting columns forms a limiting groove 13.

[0021] The mounting seat 12 is provided with a plurality of elastic supporting columns 14, and the top of the elastic supporting column 14 is in contact with the bottom of the button cap 4.

[0022] The dialing rod 23 is arranged on the outer cylindrical surface of the guide ring 24, and the middle of the guide ring 24 is provided with a connecting shaft which is axially connected with the control shaft of the potentiometer 22.

[0023] The cylindrical surface of the button cap 4 is provided with a rotation-stopping rod 42 which is buckled into the clamping groove 15 on the base 1.

[0024] Working principle: in this case, when the rotary knob control function is used, the user rotates the rotary cap 3, the rotary cap drives the dialing rod 23 to move, and the dialing rod 23 drives the potentiometer 22 to rotate, thereby generating an electric control signal, in order to limit the rotation angle of the potentiometer, the bottom of the mounting seat 12 is connected to the base 1 through a plurality of supporting columns, the height of the mounting seat 12 is higher than the upper plane of the base 1, and the gap between the supporting columns forms a limiting groove 13. The rotation angle of the dialing rod is limited by the limiting groove, thereby limiting the rotation angle of the rotary cap.

[0025] When the user needs to use the button control, the button cap is pressed by hand, the button cap moves downward to push the button switch 21, and an electric control signal is generated. In order to make the button cap have elasticity, a plurality of elastic supporting columns 14 are arranged on the mounting seat 12, and the top of the elastic supporting column 14 is in contact with the bottom of the button cap 4. When the button cap is pressed downward, the elastic supporting seat rebounds upward to push the button cap to reset. In order to prevent the button cap from rotating and causing the icons printed on the surface to be displaced, the cylindrical surface of the button cap 4 is provided with a rotation-stopping rod 42 which is buckled into the clamping groove 15 on the base 1. The button cap can only move axially, but cannot rotate circumferentially.

[0026] Compared with the traditional technology, the control switch in the case adopts a double-layer structure to realize the double matching requirement of the potentiometer and the switch. Through the scheme design, the first solves the defect that the coding scheme has no reference point, and the cost is also greatly superior to the encoder. The normal price of the ordinary encoder is about 3.5 RMB, and the cost of this scheme is about 1.5 RMB. At the same time, the functional requirements and appearance design can also be considered, so that it has better market competitiveness, and can be widely applied to various small household appliances, such as coffee machine, coffee machine, coffee grinder and other products.

[0027] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A small household appliance rotary and push dual-use composite switch, characterized in that: It include circular base (1), the outer cylinder of base (1) is provided with limit ring (11), the middle part of base (1) is provided with mounting seat (12) upward, the part between mounting seat (12) and base (1) is hollowed out to form limit slot (13); The circuit board (2) is installed in the mounting seat (12), the upper end of circuit board (2) is provided with button switch (21), the lower end of circuit board (2) is provided with potentiometer (22), the control shaft of potentiometer (22) is provided with dial lever (23), the other end of dial lever (23) extends upward through limit slot (13); The upper end of base (1) is covered with screw cap (3), the inner end face of screw cap (3) is provided with elastic buckle (31), elastic buckle (31) is buckled under limit ring (11), which limits the axial movement of screw cap (3), the inner hole of screw cap (3) is provided with connecting groove (32), connecting groove (32) is buckled on dial lever (23), rotating screw cap (3) drives potentiometer (22) to rotate through dial lever (23); The middle part of screw cap (3) is hollowed out to form button cavity (33), button cover (4) is installed in the button cavity (33), the bottom of button cover (4) is carried above button switch (21), the outer circle of the bottom of button cover (4) is provided with anti-dropping ring (41) outward, the diameter of anti-dropping ring (41) is greater than the diameter of button cavity (33) setting; The dial lever (23) is arranged on the outer cylindrical surface of the guide ring (24), and the middle part of the guide ring (24) is provided with a connecting shaft which is axially connected with the control shaft of the potentiometer (22).

2. The dual-purpose composite switch for a small household appliance according to claim 1, characterized in that: The bottom of mounting seat (12) is connected to base (1) by several supporting columns, the height of mounting seat (12) is higher than the upper plane of base (1), and the gap between the several supporting columns forms limit slot (13).

3. The dual-purpose composite switch for a small household appliance according to claim 1, characterized in that: The mounting seat (12) is provided with several elastic supporting columns (14), and the top of the elastic supporting column (14) is connected with the bottom of the button cover (4).

4. The dual-purpose composite switch for a small household appliance according to claim 1, characterized in that: The cylindrical surface of the button cover (4) is provided with a rotation stopping rod (42), and the rotation stopping rod (42) is buckled into the clamping groove (15) on the base (1).

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