TWI463356B - Touchpad - Google Patents

Description

touchpad

The invention relates to a touch panel, in particular to a touch panel with a switch function.

The touchpad is the main input device of the notebook computer. It is used to control the screen cursor and has the same function as the mouse. The first touchpad was invented by George E. Gerpheide and first integrated into the PowerBook 500 series of computers by Apple Computer in 1994, and has since become the standard for notebook computers. The current touch panel products on the market mainly include two technologies, one based on the principle of capacitance and the other based on the principle of resistance. The touch panel of the capacitor principle is converted into the movement of the cursor by the capacitance change between the finger and the touch panel of the touch panel, and the touch panel of the resistance principle is composed of a deformable resistive film and a fixed resistive film. The middle is separated by air. When the finger touches the touchpad, the upper resistive film is pressed to deform and contact the lower resistive film, and the lower resistive film can sense the position of the finger, thereby controlling the movement of the cursor.

Laptop manufacturers usually install a button switch equivalent to the left and right buttons of the mouse on the accessory of the touchpad. However, when using the computer, the user needs to control the touchpad with different fingers and press the button switch, which is inconvenient to operate.

In view of the above, it is necessary to provide a touch panel that is easy to operate.

A touchpad includes a touchpad, a base, and one of the lower sides of the touchpad The edge layer and a touch circuit board are fixed with a switch, and the touch panel is slidably fixed on the base to touch the switch.

Compared with the prior art, the touch panel of the present invention can realize the function of controlling the cursor movement and pressing the switch with one finger, and is convenient to use.

20‧‧‧ touchpad

21‧‧‧ sets of columns

211‧‧‧ center hole

25‧‧‧容容

30‧‧‧Insulation

40‧‧‧Sensor board

43‧‧‧ interface

50‧‧‧Base

51‧‧‧ column

53‧‧‧ fixed department

531‧‧‧Fixed holes

532‧‧ ‧ gap

60‧‧‧ switch

61‧‧‧ button

63‧‧‧ stitches

70‧‧‧ Spring

1 is an exploded perspective view of a preferred embodiment of a touch panel of the present invention.

2 is another perspective exploded view of a preferred embodiment of the touch panel of the present invention.

3 is an assembled, isometric view of the touch panel of FIG. 1.

Figure 4 is a cross-sectional view taken along line IV-IV of Figure 3.

FIG. 5 is a cross-sectional view of the touch panel of FIG. 3 after being pressed.

Referring to FIG. 1 and FIG. 2 , a preferred embodiment of the touch panel of the present invention includes a touch panel 20 , an insulating layer 30 , a sensing circuit board 40 , a base 50 , a switch 60 , and a plurality of springs 70 .

The touch panel 20 is located at the outermost side of the touch panel to facilitate finger touch. Each of the four corners is respectively provided with a downwardly extending sleeve 21, and each set of columns 21 is respectively provided with a central hole 211. A square receiving cavity 25 is disposed on the lower side of the touch panel 20.

The insulating layer 30 is located between the touch panel 20 and the touch circuit board 40 for electrically isolating the touch panel 20 and the touch circuit board 40.

A wire mesh (not shown) is formed on the upper surface of the sensing circuit board 40. The wire mesh determines the position and movement trajectory of the finger by the capacitance change thereon, and an interface 43 is set on the sensing circuit. The lower side of the plate 40 is used to sense the wire mesh The signal is transmitted to the processor, and the processor controls the cursor on the computer screen to perform the corresponding action.

The base 50 can be fixed on the base of the notebook computer. The four corners of the base 50 corresponding to the cover post 21 of the touch panel 20 are provided with four uprights 51. The base 50 is raised in the middle to form a fixing portion 53 for fixing the switch 60. The fixing portion 53 is provided with four fixing holes 531 extending through the base 50. One side of the fixing portion 53 is provided with a notch 532 for the interface 43 of the sensing circuit board 40.

A switch 61 is disposed on the upper portion of the switch 60, and four pins 63 are disposed on the lower portion.

Referring to FIG. 3, FIG. 4 and FIG. 5 together, when assembling the touch panel, firstly, four springs 70 are placed on the four columns 51 of the base 50, and the upper end of the spring 70 protrudes from the upper end of the column 51, and the switch is turned on. The four pins 63 are inserted into the four fixing holes 531 of the base 50 to be connected with the circuit in the notebook computer, and then the sensing circuit board 40 and the insulating layer 30 are snap-fitted to the receiving cavity 25 of the touch panel 20. Finally, the sleeve 21 of the touch panel 20 is opposite to the column 51 of the base 50, and the spring 70 sleeved on the column 51 is also sleeved on the sleeve 21, and the column 51 is inserted into the center hole 211 of the sleeve 21, thereby The touch panel is assembled. At this time, the interface 43 of the touch circuit board 40 is opposite to the notch 532 of the base 50.

In use, the finger slides on the touch panel 20 to control the cursor. Further, the touch panel 20 is pressed down, and the touch panel 20 is slid down together with the touch panel 40 to touch the button 61 of the switch 60, thereby controlling the cursor to generate corresponding The action, such as the left click operation of the mouse, etc., while the spring 70 is elastically compressed, and the interface 43 of the touch circuit board 40 is received in the notch 532 of the base 50 to avoid the base 50, when the touch panel 20 is no longer pressed. At the same time, the touch panel 20 returns to the original position under the elastic restoring force of the spring 70.

The touch panel in the above embodiment can realize the function of controlling the cursor movement and pressing the switch with one finger, and is convenient to use.

In summary, the present invention is in accordance with the conditions of the invention patent application, and the patent application is filed according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art to the spirit of the present invention should be included in the following claims.

20‧‧‧ touchpad

21‧‧‧ sets of columns

30‧‧‧Insulation

40‧‧‧Sensor board

50‧‧‧Base

51‧‧‧ column

53‧‧‧ fixed department

531‧‧‧Fixed holes

532‧‧ ‧ gap

60‧‧‧ switch

61‧‧‧ button

63‧‧‧ stitches

70‧‧‧ Spring

Claims (7)

A touch panel includes a touch panel, a base, an insulating layer fixed on a lower side of the touch panel, and a touch circuit board, wherein the switch is fixed with a switch, and the touch panel and the touch circuit board are slidably fixed to the touch panel The switch is activated on the base. The touch panel of claim 1, wherein each of the four corners of the base is provided with a column, and the four corners of the touch panel are respectively provided with a set of columns, and each set of columns is provided with a central hole, and the column of the base is inserted correspondingly The touchpad is slidably secured to the base in the center hole of the sleeve. The touch panel of claim 2, wherein a spring is sleeved on the corresponding column and the sleeve to provide an elastic restoring force to the touch panel. The touch panel of claim 1, wherein the touch panel is provided with a receiving cavity, and the sensing circuit board and the insulating layer are buckled and fixed in the receiving cavity. The touch panel of claim 1, wherein the touch circuit board is provided with an interface, and the base is provided with a gap for the interface. The touch panel of claim 1, wherein the base is provided with a plurality of fixing holes penetrating the base, and the switch is provided with a plurality of pins, and the pins are inserted into the fixing holes of the base. The touch panel of claim 1, wherein the middle portion of the base is convex to form a fixing portion, and the switch is fixed to the fixing portion.