KR200366003Y1 - Automatic dome tester for regulating the metal dome - Google Patents

Abstract

The present invention relates to an inspection apparatus for a button dome to be installed in a product to be inspected, and more particularly, for example, by forming a PCB pattern having a corresponding switching contact for each metal dome to be inspected in accordance with the contact of the metal dome. It relates to a metal dome inspection device for measuring each switching contact to check whether the metal dome is defective. In the inspection device of the metal dome arranged in the dome as a mobile phone push button according to the present invention, the PCB pattern (P) and at least one is provided with three switch contacts (A, B, C) to control the electrical flow Dome sheet (s) having a metal dome (d) and supporting the elasticity of the pressing pressure of each metal dome (d) relative to the annoying PCB pattern (P), and the detection data for the pressing pressure of the metal dome (d) Is detected through the PCB pattern P, and the dome assembly 40 for transmitting the detected contact data through the signal line and the three contacts A, B, and C are disposed close to each other. A switch detected by the switching detector 760 and a switching detector 90 for judging and distinguishing the various situations of whether the contacts A, B, and C, which can be identified as the connection of A, B, and C, are in contact The microcomputer 210 and the microcomputer 210 for transmitting a connection state through an effective value processing process. Depending on the situation, it received from the switching detector 760. Under the control and a LCD monitor 60 for displaying that the metal dome is bad.

Description

Automatic dome tester for regulating the metal dome}

The present invention relates to an inspection apparatus for a button dome to be installed in a product to be inspected, and more particularly, for example, by forming a PCB pattern having a corresponding switching contact for each metal dome to be inspected in accordance with the contact of the metal dome. It relates to a metal dome inspection device for measuring each switching contact to check whether the metal dome is defective.

Recently, devices for inspecting buttons for use in a mobile phone having more than a dozen buttons, each of which has been given a unique function, have been proposed as devices such as a mobile phone and a TV remote control having miniaturization and multiple functions.

These products inspect their buttons for operation and ship only those that work correctly. As described above, the conventional inspection device for checking whether each button works properly puts a product to be inspected on an easy jig, and the operator presses each button to perform visual inspection.

This inspection method takes a lot of inspection time because the operator has to press all the buttons of the product in sequence, and the fatigue accumulates easily in the hands even in short working hours. Of course, there was a problem that excessive labor costs.

In addition, there is a device that exclusively checks the rated load of each cell phone button dome seat. This is because the dome seat and the air cylinder are made to fit one model product. In this case, since the pressure of the dome is changed by the mechanical method of the cylinder position, there is a problem that it takes a lot of work time to modify the dedicated inspection apparatus according to the model change.

In addition, in the manual or dedicated inspection method, it is difficult to determine whether the dome is defective by precisely measuring dozens of mobile phone button dome sheets, each of which has been given a unique function, to maintain strength within the allowable pressure range for each dome button. In addition, there is a problem in that the inspection is not possible due to the tension or elasticity of the button dome of the cellular phone button dome sheet.

The present invention has been made to solve the above problems of the prior art, by measuring through a PCB pattern having a switching contact corresponding to each mobile phone metal dome, each switch contact is individually operated according to the pressing position of the metal dome The object of the present invention is to provide an inspection device for a mobile phone metal dome composed of a switchable dome.

1 is a perspective view illustrating the inspection device of the metal dome for inspecting each cell phone button dome sheet according to the present invention;

Figure 2 is a block diagram showing a part of the operation during inspection of the metal dome of the present invention in Figure 1,

3 is a block diagram illustrating the electrical structure of the dome assembly in the inspection apparatus of the metal dome shown in FIGS. 1 and 2;

4 and 5 are views illustrating a method for enhancing the detection force by the three-step measurement according to the present invention,

6 is a view showing a screen of the dome inspection apparatus displayed on the monitor of the inspection apparatus of the present invention.

Explanation of symbols on the main parts of the drawings

10: baseframe

20: control panel

30: Test Slide Board

40: dome assembly

50: Air Tool Kit

90: switching detector

210: micom

250: pressure sensor

260: regulator

270,270a: cylinder

According to the present invention for achieving the object as described above, in the inspection device of the metal dome is arranged dome as a push button,

Each metal dome (d) for the annoying PCB pattern (P) has a PCB pattern (P) with three switch contacts (A, B, and C) for intermittent electrical flow and at least one metal dome (d). Dome sheet (s) for supporting the elasticity of the pressing pressure of the) and the detection data on the pressing pressure of the metal dome (d) through the PCB pattern (P) and transmits the detected contact data through the signal line When the dome assembly 40 and the three contacts A, B, and C are disposed in close proximity, the contacts A, B, and C, which can be identified as a connection between these contacts A, B, and C, are A switching detector 90 for judging and distinguishing various situations of contact, a micom 210 for transmitting the switch connection state detected by the switching detector 760 through an effective value processing process, and the micom 210 Determining whether the metal dome is defective according to the situation received from the switching detector 760 under the control of Including LCD monitors (60) to play.

In addition, according to the present invention, in the inspection device in which the dome is arranged as a push button, when the dome assembly 40 presses the left side of the metal dome, when the left switch contact point (A) is pressed, the right side is pressed. In the case of pressing the right switch contact point (B) and the center, data can be validated by connecting all of the center switch contacts (C).

In addition, the inspection method of the metal dome according to the present invention in the inspection method using the inspection device of the metal dome,

1. A method for enhancing detection power by three-step measurement, comprising: a first step of determining and detecting a failure if a dome is pressed when pressed at a low load;

If the dome is pressed after pressing at the rated load in the first step, it is judged to be normal, and if it is not pressed, it is determined to be defective.

Even if the metal stone (d) is pressed to generate a signal at the common contact point C, both sides are excited so that a signal cannot be received at the contact point A or B. And a third step of exchanging a contact pressure signal from the microcomputer 210 while being pressed at the rated load in order to detect the signal in two forms in which the signal cannot be received from the signal, process it, and determine it as effective.

In addition, in the inspection method of the metal dome according to the present invention, the first step to detect is bad when pressed by a low load (150gr) and at this time the dome is missing state detects all the inverted state.

In addition, in the inspection method of the metal dome according to the present invention, the second step of determining the state when the dome is pressed when the dome is pressed at the rated load (180gr) instantaneously turned over, the dome Discriminates whether the dome is inverted momentarily or the dome is not pressed on the contact inspection PCB for inspecting the state of.

In the following, with reference to Figures 1, 2, and 3 according to the present invention can be more clearly understood as follows.

1 is a perspective view for explaining the inspection device of the metal dome for inspecting each mobile phone metal dome sheet (P) according to the present invention, Figure 2 is a block partially showing the key operating part of the present invention in FIG. 3 is a diagram showing the electrical structure of the dome assembly 40 shown in FIGS. 1 and 2.

As shown in Figure 1, in the inspection device capable of inspecting the metal dome according to the present invention, the base frame 10, and a test slide board that can put each of the mobile phone metal dome sheet (P) ( 40), the dome assembly 240 capable of applying pressure to the mobile phone metal dome sheet P, and the interfacing for tension inspection of the metal dome and the dome sheet P exiting from the dome assembly 240 An interface 230, an air tool kit 50 fixed at an upper position of the dome assembly 240, a control panel 20 for controlling an allowable pressure for the assembly position of the dome assembly 240; Pressure sensor 250 for detecting the metal dome pressure of the mobile phone metal dome sheet (P) and the contact to determine the allowable tension or elastic force by the microcomputer 210 electrically connected to the control panel 20 Tolerable values through And a mobile phone metal dome sheet (P) metal dome seated between the adjuster 260, an LCD monitor 60 indicating a state of receiving and driving a control command of the microcomputer 210, and the air toolkit 50. At least one first cylinder 270 that provides a predetermined pressure at each corresponding position, and a dome preset at the end of the piston rod to be connected to the first cylinder 270 and actuate by pressing the dome metal dome of the mobile phone. At least one two-cylinder 270a having a position contact pin 270x for detecting whether the dome is depressed from the seat P and turned upside down by applying a rated load to the sheet; do.

In addition, in the inspection device that can adjust the metal dome, the device for inspecting each mobile phone metal dome sheet (P) is a test slide board 40 on the base frame 10, each mobile phone metal dome sheet ( P) can be settled on. At this time, the dome (d) to be inspected is attached to each of the standardized dome sheet (P) in a uniform arrangement.

The interface 230 may be configured to interconnect the electrical signals and physical interconnection characteristics of the voltage, frequency, and timing constituting the tension test of the metal dome d and the dome sheet P from the dome assembly 240. Match these conditions.

The dome assembly 240 is provided with a contact terminal (270x) that can apply pressure to the mobile phone metal dome sheet (P).

The dome assembly 240 also controls the allowable pressure for the dome position of the air tool kit 50 and the dome assembly 40 to be an upper pressure plate member fixed at an upper position of the dome assembly through the adjuster 262. It is connected to the control panel 20, the output state of the control panel 20 is displayed through the LCD monitor 60 and can be confirmed through the mouse 70 and the printer (80).

The adjuster 260 is electrically connected to the control panel 20 under the control of the microcomputer 210, and the position contact for detecting the digital tension to determine the tension or elastic force outside the allowable range applied to the dome assembly 240. The dragon pin (270x) is interposed between the cellular phone metal dome and the metal dome sheet (P) to adjust by eliciting an allowable value through both contact states.

The allowable tension or elastic force stores in the memory 220 a rated load defined according to various manufacturers' models. In the present embodiment, the allowable range of tension to elastic force is 2 gr or less in tension resolution, and a total of 1.5 seconds with one operation time of 0.5 seconds off, 0.5 seconds on, and 0.5 total return time is preferable. It is preferable to determine by supplying digital pressure of the air pressure of 5-6Kg / cm to determine the supply air pressure.

The control panel 20 is controlled to precisely comply with the load value according to the position of the cylinder according to the air pressure value of the air cylinder. In addition, the control panel 20 precisely maintains the air pressure pushed by the cylinder.

The air cylinders 270 and 270a do not include an elastic member such as a spring therein and are precisely controlled by the push force of the cylinder during air injection. This eliminates the disadvantage that even though the air pressure is constantly applied, the load value is inevitably changed according to the position of the cylinder in the existing cylinder simply returning its position due to the spring force having the piston and the spring in the cylinder. That is, since the cylinders 270 and 270a of the present invention are not equipped with springs, the load value is precisely changed in proportion to a predetermined pressure required for the tension of the dome of the key metal dome, thereby providing accurate pressure to the key metal dome. .

The at least one first cylinder 270 is set to provide pressures of upper limit of 250 gr, lower limit of 150 gr, and return of 120 gr for each position corresponding to the metal dome of the cellular phone dome sheet P seated between the toolkit 50. can do.

The cylinders 270 and 270a also have a minute hole formed in the cylinder wall to prevent moisture from accumulating due to the occurrence of moisture caused by fixing the upper and lower positions of the cylinder to an air supply hose (not shown) connected to one end thereof. It is preferable to have micropores.

At least one of the cylinders 270 and 270x provides an upper limit, a lower limit, and a return pressure by the load of the cylinder according to the air pressure value of the air cylinder for each position corresponding to the metal dome of the cellular phone product seated between the air toolkit 50. At least one two cylinder 270a connected to the first cylinder 270 of the first cylinder 270 and having a position contact pin at the end of the piston rod to be operated by pressing the dome metal dome of the mobile phone. Have

The air tool kit 50 has a position contact pin at the end of the piston rod to press and operate the metal dome for each position corresponding to the metal dome of the mobile phone product seated.

Further, in the automatic dome testing apparatus, the air cylinders 270 and 270a are two stage air cylinders 270 and 270a, and the microcomputer 21 determines the strength of the magnetic force generated by the magnet in the cylinder rod of the air cylinders 270 and 270a. Export the output to indicate the location. By developing two stages of air cylinders 270 and 270a, two mechanisms with different strokes can be used to simplify the mechanism. In addition, it can be used interchangeably, and it can be used interchangeably due to electrical wiring relationship.

FIG. 2 shows the electrical configuration of the automatic dome testing apparatus shown in FIG. 1. In the automatic dome testing apparatus, the microcomputer 210 controls the overall function and operation of the apparatus.

The memory 220 stores a program whose operating state changes according to a temporal change of a predetermined target value to drive the microcomputer 210, and the dome is pressed when applying the rated load of each mobile phone metal dome sheet P. Or store the allowable tension or elasticity data for the mobile phone metal dome and the metal dome sheet P generated in the process of removing the pressing pressure.

When the user uses the testing device, the input operation command transmits command data from the microcomputer 210 to the air cylinders 270 and 270a while performing an interface function with the microcomputer 210. On the other hand, the drive interface 230 is a dome assembly 240 for measuring the tensile force, etc. of the PCB pattern, and at least one first and second cylinders (270, 270a) to apply a predetermined precise pressure to the dome assembly 240 To perform the interface function of the upper press plate or the air toolkit (50).

The dome assembly 240 controls the allowable pressure operation of the dome assembly 240 under the control of the pressure regulator 260 that adjusts the pressure of the air cylinders 270 and 270a according to the control command of the microcomputer 210. In addition, the dome assembly 40 has a left switch contact point (A) when pressing the left side of the elastic metal dome, a right switch contact point (B) when pressing the right side, and a center switch contact point when pressing the center ( Data can be validated by connecting all of C).

The regulator 260 pressurizes and supplies air input from an air pump (not shown).

The at least one first and second cylinders 270 and 270a selectively suck or exhaust air under the control of the microcomputer 210 through the upper press plate 50 connected to the upper press plate 50, Maintain pressure on the contact portion 270x generated in the intake and exhaust process.

In addition, the regulator 260 connected to the dome assembly 240 through the second cylinder 270a receives the control command of the microcomputer 210 and simultaneously drives the at least one first cylinder 270 simultaneously.

The position contact pin 270x contacts or separates the pressure state of the dome to the metal dome sheet s of the cellular phone PCB pattern P of the corresponding manufacturer, and contacts or separates the pressure state of the dome to the dome. According to the command of the microcomputer 210 to determine whether or not the failure state, the pressure sensor 250 in the air tool kit 50 shown in Figure 1 receives the output data of the position contact pin (270x) and differential Thus, the position detected allowable pressure is detected.

The at least one first and second cylinders 270 and 270a change the driving signal based on the position data and the pressure data output from the position contact pin 270x and the pressure sensor 250, respectively.

That is, upon receiving a command to close the dome assembly 240 from the microcomputer 210, the first and second cylinders 270 and 270a are driven to move the position contact pin 270x to the dome of each PCB pattern. do. When the position contact pin 270x continues to move to the dome and goes out of the allowable range of the allowable pressure, the contact speed of the position contact pin 270x drops momentarily greatly, and the pressure sensor 250 detects such a speed change. Done.

Accordingly, the adjuster 260 stops after moving the position contact pin 270x with respect to the cellular phone metal dome sheet P by a predetermined amount so that the dome assembly 240 does not apply excessive pressure after contacting the dome. Done.

On the other hand, even when the dome assembly 240 receives an operation command from the microcomputer 210 outside the allowable range of the allowable pressure, the regulator 262 drives the cylinders 270 and 270a when each dome reaches an appropriate position. You can protect the dome assembly by stopping it.

Therefore, by driving the microcomputer 210 in the dome testing apparatus of the present invention to test according to the time change of a certain target value it can ensure the failure prevention of the dome pattern. It can reduce the number of workers and improve productivity.

Next, the operation of the automatic testing apparatus according to the present invention will be described.

The inspection device of the metal dome is that when the operator places the mobile phone metal dome sheet (P) on the dome assembly and sequentially operates the air cylinders (270, 270a) on the air tool kit material 50, Air cylinders (270, 270a) by pressing the metal dome of the mobile phone in sequence to screen the good and defective goods, and the selected products are transported to the next process by each worker.

Therefore, while the mobile phone metal dome sheet P intermittently moves in the longitudinal direction of the test slide board 30, the position contact pin 270x is operated by the second air cylinder 270a of height adjustment, so that the test slide Press the metal dome of the mobile phone metal dome sheet (P) seated on the board 30 in sequence.

In addition, when the user sets the load value through the LCD monitor 60 and the mouse 70 according to the manufacturer's model, the signal load value of the tension to elastic force allowable in the memory 220 is stored in the first memory and the microcomputer ( The load value is transmitted to the pressure sensor 250 by 210. At this time, the load value of the allowable tension to elastic force is received by the signal of the microcomputer 220 from the second memory unit which stores the allowable tension to elastic data about the pressing or pressing pressure of the metal dome sheet P. Air pressure is applied.

As described above, the process of pressing the metal dome of the mobile phone metal dome sheet P is applied by pressing the on / off switch and then pressing other metal domes to check whether each signal is transmitted.

The signal transmitted as the metal dome of the mobile phone metal dome sheet P is pressed is transmitted to the microcomputer 210 through the receiver (not shown) of the position contact pin 270x, and the signal transmitted is The microcomputer 210 displays which metal dome is operating or which metal dome is inoperable on the monitor 60. Based on the inspection as described above, the metal dome of the mobile phone metal dome sheet (P) is judged to work properly and sorted as good or bad. This process is repeated to perform the inspection process.

As the above processes are continuously and sequentially and collectively, automation is possible.

3 is a block diagram illustrating the electrical structure of the dome assembly 40 in the inspection apparatus of the metal dome shown in FIGS. 1 and 2, and receives signals from the dome assembly 40 and the dome assembly 40. The switching detector 90 that determines the switching connection state of the dome d, the microcomputer 210 that receives the switching data from the switching detector 90, and the data is determined by the display 60. It shows the means to output.

In the dome assembly 40, there are three switch contacts A, B, and C under each sheet s of the cellular phone. The contacts A, B, and C are pressed together left or center or right or both depending on the position of the contacts A, B, and C for pressing the user's metal dome. The connection state of the switch contacts A, B, and C is recognized by the switching detector 90. If the center of the dome is pressed against the measurement target dome d of the sheet s, as shown in FIG. 4, only the contact point C of the switching detector 90 is pressed and a current is generated between the circuit lines al and bl. It will not flow. When both sides of the dome d are pressed, current flows between the circuit lines al and bl as shown in FIG. The switching detector 90 can detect which circuits (A, B, C) of which dome are connected by detecting which circuit the current flows through, so that the switching detector 90 Find out if it is bad.

For example, in a situation where the switching of the contacts A and B is open while the switch contact C of the dome illustrated in FIG. 4 is connected, only the switch C is first connected and current flows. The switching detector 90 recognizes as a valid connection only when the neighboring switch C in the same dome d is connected until the current flowing between the circuit lines initially formed is interrupted.

Thus, the switching detector 90 electrically detects the signals of all the contacts A, B, and C, but treats secondary connections that do not occur in the same dome d as an error. That is, the switch connection state detected by the switching detector 90 passes the determined data to the microcomputer 210 first, and passes through an effective value processing process using a method of correcting the time after the elapse of time. It is sent to the microcomputer 210.

In addition, the microcomputer 210 may display on the LCD monitor 60 which dome corresponding to the switch A, B, C according to the situation received from the switching detector 90.

Next, with reference to Figures 4 and 5 will be described a method for enhancing the detection force by the three-step measurement.

The inspection device of the metal dome according to the present invention is a part for inspecting whether the dome is pressed or not by applying a rated load of the dome, preferably 50 gr to 500 gr, and the dome is removed from the sheet, and the state of being turned upside down. Detect

6 is a view showing a screen of the dome inspection apparatus displayed on the monitor of the inspection apparatus of the present invention.

In addition, the method of testing the metal dome as a method of reinforcing detection power by three-step measurement in the method using the inspection apparatus is bad when the dome is pressed when pressed at a low load (150gr) in the first step, as shown in FIG. The dome is removed. All the domes are upside down.

If the dome is pressed after being pressed at the rated load (180gr) in the second step, it should be judged as bad if it is not pressed.

When pressing at the rated load (180gr), the moment the dome is pressed, the dome attached to the seat is instantaneously flipped. At this time, it is possible to accurately discriminate whether the dome is instantaneously turned over (Fig. 4) or the dome is not pressed down (Fig. 5) on the contact inspection pcb board for checking the state of the dome.

In the process of discriminating, it is instantaneously turned over and the contact operation is not possible (Fig. 4) is determined as good quality. Therefore, it checks the characteristic of the dome that enters the key part of the mobile phone and detects the defect.

In other words, when the dome is pressed, the states of FIGS. 4 and 5 appear.

Although FIG. 4 is pressed, even when a signal is generated at the common contact C, both sides are excited so that signals cannot be received at the contacts A or B. FIG. 2 is not pressed to generate a signal at the common contact C. You can't receive a signal.

In the two types of detection of the signal, both of them produce the same signal. In fact, FIG. 5 should make a bad decision and FIG. 4 should make a good decision.

In order to determine this, a process of exchanging and receiving a signal in three stages is performed in the microcomputer 210 while pressing at a rated load (180 grams).

That is, in the first step, the H value is given to the contacts A and C, and the signal is received at B.

In the second step, the H value is given to the contacts B and C and a signal is received at A.

In the third step, the H value is given to the contact C and a signal is received at the contacts A and B.

Analyzing the data through the above process results in the following Table 1.

State of Figure 4 State of Figure 5 First step L H 2nd step L H 3rd step L L

Basically, it can't be separated in the method of checking with only the third step, but the data can be accurately determined by combining the data through three operations.

Therefore, as described in detail above, the inspection device of the metal dome for inspecting the mobile phone metal dome sheet according to the present invention is measured through a PCB pattern having a switching contact corresponding to each mobile phone metal dome, and according to the pressing position of the metal dome Accurately measure the strength within the pressure range to determine whether the dome is defective or not. Also, the microcomputer automatically checks whether the button dome of the cell phone button dome sheet is in contact with and disconnected. It is possible to maintain the uniformity of quality by maintaining the allowable pressure range.

In addition, the metal dome inspection device that inspects the metal dome of the mobile phone quickly changes the model without changing the dome pressure by mechanically positioning the cylinder when the tension is changed by the spring action inside the cylinder. Therefore, it is possible to unmann the inspection process while reducing the number of workers, improving productivity, eliminating troublesome processes and easily managing defect data.

Embodiment of the present invention is for the purpose of illustration, those of ordinary skill in the art, modifications, changes, replacements will be possible through the technical scope illustrated in this specification.

Claims (2)

In the inspection device in which the dome is arranged as a push button, Each metal dome (d) for the annoying PCB pattern (P) has a PCB pattern (P) with three switch contacts (A, B, and C) for intermittent electrical flow and at least one metal dome (d). Dome sheet (s) for supporting the elasticity of the pressing pressure of the) and the detection data on the pressing pressure of the metal dome (d) through the PCB pattern (P) and transmits the detected contact data through the signal line When the dome assembly 40 and the three contacts A, B, and C are disposed in close proximity, the contacts A, B, and C, which can be identified as a connection between these contacts A, B, and C, are A switching detector 90 for judging and distinguishing various situations of contact, a micom 210 for transmitting the switch connection state detected by the switching detector 760 through an effective value processing process, and the micom 210 Determining whether the metal dome is defective according to the situation received from the switching detector 760 under the control of To check the tension of the metal dome, it characterized in that, including the LCD monitor 60 to play the testing device. The method of claim 1, The dome assembly 40 has a left switch contact point (A) when pressing the left side of the metal dome, a right switch contact point (B) when pressing the right side, and a center switch contact point (C) when pressing the center. The metal dome inspection device, characterized in that the data can be validated by connecting all.