CN100530471C - Push-button switch device - Google Patents

Abstract

The present invention relates to a push-button switch device. The switching device includes: a shell body which is composed of a top plate and a bottom plate, wherein the bottom plate is made of insulating materials; at least two groups of speed keys are arranged on the top plate of the shell and can move up and down by being pressed, and an insulated pressing arm is arranged below the speed keys; a pair of conducting plate groups are respectively arranged below each group of speed keys, each conducting plate group comprises a conducting elastic sheet and a conducting connecting sheet, and is in an open circuit state at ordinary times; a clamping mechanism arranged on the shell; the tripping key is arranged on the top plate of the shell; a signal key installed on the top plate of the shell; a signal conductive sheet set, which is arranged below the signal key and comprises a conductive elastic sheet and a conductive connecting sheet, wherein the signal conductive sheet set is in an open circuit state at ordinary times, and when the signal key is pressed down, the signal conductive sheet set is communicated to generate a signal loop. The invention can be applied to electrical appliances with speed switching and selecting functions, such as a range hood, an electric fan and the like.

Description

Push button switch device

technical field

The invention relates to a push-button switch device, in particular to a push-button switch device capable of forming a detection signal and controlling electrical delay action.

Background technique

Known push-button switches are widely used in electrical devices such as range hoods and electric fans. Because of their stable structure, reliable operation, and compliance with various safety tests, they are already an excellent choice for manufacturers of electrical devices such as range hoods and electric fans. It is a standardized procurement product whose specifications cannot be easily changed, otherwise it will change a lot of mold and assembly costs, which is difficult to be accepted by the industry. However, as consumers' demand for electrical functions increases, for example, they hope that the range hood can add a delay (time) function, which can automatically exhaust smoke for 5 to 10 minutes after use, and then automatically shut down. Conventional switches cannot provide this option, and the feasible way is to add a time-delay switch or use other switches, which will increase a lot of trouble and cost in design and manufacture for the industry.

Contents of the invention

The main purpose of the present invention is to provide a push-button switch device, which has a traditional appearance and size, but can increase the function of the switch.

In order to achieve the above object, the present invention provides a push-button switch device, which is characterized in that it includes: a housing consisting of a top plate and a bottom plate, the bottom plate is made of insulating material; at least two sets of speed buttons, It is arranged on the top plate of the housing and can be pressed to move up and down. An insulating pressing arm is arranged below it; a pair of conductive sheet groups are provided below each group of speed buttons, and each conductive sheet group includes a conductive shrapnel and a guide The connecting piece is usually in an open circuit state. When the corresponding speed button is pressed down, its pressing arm can press against the same pair of conductive shrapnel and move down to contact and conduct with the corresponding pair of conductive pieces to form a path state; one click The mechanism is arranged on the casing to hold the pressed and displaced buttons to make them positioned; a release button is installed on the top plate of the casing and can be pressed to move down and release all the buttons. State; a signal button, installed on the top plate of the housing, can be pressed to move down and release the stuck state of all buttons; a signal conductive sheet group, arranged under the signal button, including a conductive shrapnel and a The conductive strips are usually in an open circuit state, and when the signal button is pressed down, the signal conductive strips are connected to form a signal loop.

In the above-mentioned technical solution of the present invention, the signal conductive sheet group is connected to the microcomputer control device, and through the conduction of the signal loop and the length of the conduction time, the microcomputer control device automatically generates the device by detecting the length of the signal. The delay schedule can be set or the delay schedule can be canceled automatically.

In the above-mentioned technical solution of the present invention, each pair of conductive sheet groups below each group of speed buttons forms a power supply circuit and a signal circuit, and each signal circuit is connected to the microcomputer control device to remove its time delay. .

In the technical solution of the present invention described above, the switch device is installed on a range hood, the power supply circuit of the speed button is connected to the fan motor of the range hood, and its microcomputer control device forms another switch through an electric control switch. A power circuit is connected to the fan motor.

In the above-mentioned technical solution of the present invention, the range hood is also equipped with a degreasing lamp, and the microcomputer control device forms a power circuit through another electric control switch to supply power to the degreasing lamp.

In the above-mentioned technical solution of the present invention, there is also an illuminated key, and a conductive sheet group is arranged below it, which is connected to supply a power supply for an illuminating lamp.

By adopting the above technical solution, the present invention can increase the selection function of the switch without changing the external specification and size of the conventional push-button switch, which not only meets the expectations of consumers, but also does not need to change the production mold and operation process of the existing products, and has the advantages of Industrial use value.

Description of drawings

Fig. 1 is a perspective view of a push-button switch according to a first embodiment of the present invention;

Fig. 2 is the front view of the key switch of the first embodiment of the present invention;

Fig. 3 is a rear view of the push button switch according to the first embodiment of the present invention;

4 is a perspective view of the conductive shrapnel group in the first embodiment of the present invention;

5 is a system architecture diagram of a switch device according to the first embodiment of the present invention;

Fig. 6 is a perspective view of a push button switch according to a second embodiment of the present invention.

Detailed ways

In order to illustrate the structure and the achieved effects of the present invention in detail, the following preferred embodiments are given below together with the accompanying drawings.

As shown in Figures 1 to 4, the key switch 10 provided by the present invention includes:

A housing 20 is composed of a top plate 21 and a bottom plate 22 . The top plate 21 is stamped from a metal plate and has two arms 211 . The bottom plate 22 is made of insulating material, and is fixed on the bottom of the two arm portions 211 of the top plate. (This is the conventional structure)

Two groups of speed buttons 30, 31 are arranged on the top plate 21 of the housing, and can be pressed to move up and down. An insulating pressing arm 32 is arranged below it. (This is the conventional structure)

A pair of conductive sheet groups 40, 41 are provided below each group of speed buttons, and each conductive sheet group 40, 41 includes a conductive shrapnel 401, 411 and a conductive sheet 402, 412, which are usually in an open circuit state. When the corresponding speed button When 30, 31 is pressed down, its pressing arm 32 can push down the same pair of conductive spring pieces 401, 411 and move down to contact with the corresponding same pair of conductive pieces 402, 412 at the same time, and both are in the state of being connected.

A locking mechanism 50 is disposed on the casing 20, and is used for locking the pressed and displaced key to make it positioned. (This is the conventional structure)

A release button 33 is installed on the top plate 21 of the casing, and can be pressed to move down and release the locked state of all buttons. (This is the conventional structure)

A signal button 34 is installed on the top plate 21 of the casing, and can be pressed to move down and release all the buttons from being locked.

A signal conductive sheet group 44, which is arranged under the signal button 34, includes a conductive elastic sheet 441 and a conductive sheet 442, which are usually in an open circuit state. When the signal button 34 is pressed down, the conductive sheet group 44 is connected to generate a signal circuit.

An illuminated button 35 is arranged on the top plate 21 of the casing.

A conductive sheet group 45 is disposed under the illuminated button 35 .

The key switch 10 of the present invention can be used on electrical appliances with a speed switching selection function such as a range hood or an electric fan, as shown in FIG. 5 , which is a system architecture diagram of the switch 10 of this embodiment used in a range hood. The number 10 in the figure is a button switch, S0 represents the release button 33, S1 represents the high-speed button 30 and its corresponding conductive sheet group 40, S2 represents the low-speed button 31 and its corresponding conductive sheet group 41, and S3 represents the signal button 34 And its corresponding conductive sheet group 44, S4 represents the lighting button 35 and its corresponding conductive sheet group 45, 61 is an AC power supply, 62 is a motor, 63 is a lighting lamp, 64 is a microcomputer control device, which has a delay effect, 65, 66 is an electric control switch (electric relay), 67 is an oil removal lamp (a kind of halogen lamp that can send high heat), and 68 is an LED display lamp. The AC power supply 61 is connected to the right conductive elastic piece 401 of S1 and S2 by the line 71, denoted by H, and the conductive elastic piece of S4 is also marked by H. The line 72 connects the high-speed coil of the motor 62 and the lead piece 402 on the right side of S1 is represented by h, the line 73 connects the low-speed coil of the motor 62 and the lead piece 402 on the right side of S2 is shown by h, and the motor 62 is shown by line 74 Connect the AC power supply 61. The illuminating lamps 63 are connected in series by a line 75 , one end of the line 75 is connected to the lead piece of S4 which is also denoted by h, and the other end is connected to the AC power supply 61 . Above circuit constitutes the loop of conventional range hood. Microcomputer control device 64 is connected with AC power supply 61, and it has a rectifier (not shown in the figure), converts AC power to DC to supply itself and two electric relays 65, 66, in order to control the opening and closing (ON/OFF) of electric relays One end of the line 78 is connected to the AC power source 61 , the other end is connected to the relay 65 , one end of the line 79 is connected to the relay 65 , and the other end is connected to the high-speed coil of the motor 62 , thereby forming another power supply circuit for the motor 62 . The degreasing lamp 67 is connected to the relay 66 and the AC power source 61 through a line 81 and a line 82 to form a power supply circuit. The S3 signal switch is connected to the microcomputer control device 64 by the line 83 and the line 84 to form a weak current detection circuit. The line 85 is connected to the conductive shrapnel 411 on the left side of S1 and S2, which is indicated by the label L. The line 86 is connected to the conductive shrapnel on the left side of S1 and S2. 412 is denoted by symbol 1, and the two lines 85, 86 are both connected to the microcomputer control device 64 to form another detection loop.

When the user presses the speed switch S1 or S2, the motor 62 runs to exhaust the air, press the light switch S4 to activate the lighting, and press the release switch S0 to cancel all actions. This is the operation method of the conventional range hood. The device of this embodiment is provided with a signal switch S3, and when the user wants the range hood to enter the delayed stroke, he only needs to press the S3 switch. The microcomputer control device 64 of the present embodiment has the effect of delay timing, and can have multiple selection strokes, and present embodiment is provided with three kinds of strokes, and the first kind is the simple smoke exhaust stroke, only carries out smoke exhaust setting schedule (for example ten minutes ) and then stop automatically. The second is degreasing first and then deodorizing stroke, that is, turn off the degreasing lamp 67 after starting the degreasing lamp 67 setting time (for example, ten minutes), and then start the motor 62 setting time (for example, five minutes) to remove the oil after degreasing The smell is drawn away. The 3rd is to carry out degreasing after the set time (for example five minutes) of exhausting smoke first, carry out the set time (for example five minutes) of ventilating and deodorizing again after the set time (for example ten minutes). In this embodiment, the length of time for pressing the signal switch S3 is used to judge which stroke should be entered. For ease of operation, the microcomputer control device 64 is connected to an LED display lamp 68, and the display lamp 68 can display different strokes in different colors, such as red, yellow, Green, or different flashing patterns of lights represent different itineraries, such as slow flashing, fast flashing, or constant light. If the signal switch S3 is pressed for less than the set time (for example, 1 second), the signal is deemed to be cancelled, and all delay trips are cancelled. The user presses the signal switch S3 to set the time until the desired display light appears. Then release the switch S3, the range hood enters the set delay stroke, and it will automatically shut down after the stroke ends. If you want to stop the delayed trip in the middle, you only need to press the signal switch S3 again, and all the trips will be released, which is very convenient to use. If the user wants to use the range hood again during the delayed stroke, he only needs to press the speed switch S1 or S2, and the other detection circuit of the speed switch S1 or S2 will generate a signal to the microcomputer control device 64, so that the delayed stroke will immediately Cancel, its function is like a reset button, this action can prevent the motor and the oil removal lamp from being started at the same time, so as to prevent the overload of electricity, and can prevent the high and low speed coils of the motor from being powered at the same time, so as to prevent the motor from burning out.

As shown in Figure 6 is the switch 90 of the second embodiment of the present invention, and its structure is roughly the same as that of the first embodiment, and is still a five-key switch, and the key 91 is an unlock key (OFF key), and the keys 92, 93, 94 are High, medium and low three-speed selection keys, button 95 is an illumination key. The present embodiment does not establish the signal button, but the signal conductive sheet group 96 is directly located under the release button 91, and the speed button is increased from two buttons to three buttons. The wiring method is the same as the first embodiment, except that the high, The low two-speed motor is changed to a high, medium and low three-speed motor.

To sum up, the present invention can increase the selection function without changing the external specification and size of the conventional push-button switch to meet the expectations of consumers, and at the same time, it does not need to change the production mold and operation process of the existing product, and has the advantages of Industrial use value.

Claims (6)

1. A key switch device, characterized in that it comprises: A housing is composed of a top plate and a bottom plate, and the bottom plate is made of insulating material; At least two sets of speed buttons are arranged on the top plate of the housing, which can be pressed to move up and down, and an insulating pressing arm is arranged below it; There is a pair of conductive sheet groups under each group of speed buttons. Each conductive sheet group includes a conductive shrapnel and a conductive sheet. It is usually in an open circuit state. When the corresponding speed button is pressed down, its pressing arm can resist the pressure. The same pair of conductive shrapnel moves down and contacts with the corresponding same pair of conductive sheets to form a path state; a latching mechanism, arranged on the housing, to latch the pressed button to make it positioned; A release button, installed on the top plate of the housing, can be pressed to move down and release the stuck state of all the buttons; a signal button, installed on the top board of the housing, can be pressed to move down and released The click status of all buttons; A signal conductive sheet group, arranged under the signal button, includes a conductive shrapnel and a conductive sheet, which are usually in an open circuit state. When the signal button is pressed down, the signal conductive sheet group is connected to form a signal loop . 2. The push-button switch device according to claim 1, characterized in that: the signal conductive sheet group is connected to the microcomputer control device, and the microcomputer control device passes through the detection of the conduction of the signal circuit and the length of the conduction time. The length of the signal automatically generates the set delay trip or automatically cancels the delay trip. 3. The key-type switch device according to claim 2, characterized in that: each pair of conductive sheet groups under each group of speed keys forms a power supply circuit and a signal circuit, and each signal circuit is connected to the microcomputer control circuit. device to release its delay travel. 4. The push-button switch device according to claim 3, characterized in that: the switch device is installed on a range hood, the power supply circuit of the speed button is connected to the fan motor of the range hood, and its microcomputer control device An electric control switch is used to form another power circuit connected to the fan motor. 5. The push-button switch device according to claim 4, characterized in that: the range hood is also equipped with an oil removal lamp, and the microcomputer control device forms a power circuit through another electric control switch to supply all Describe the oil removal lamp power supply. 6. The push-button switch device according to claim 1, further comprising an illuminated push-button, and a set of conductive strips is arranged below it, which is connected to supply a power supply for an illuminating lamp.

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