TWI603354B - Key structure and electronic device using same - Google Patents

Description

Key structure and electronic device using button structure

The invention relates to a button structure and an electronic device using the button structure, in particular to a light-emitting button structure and an electronic device using the same.

In addition to input devices such as keyboards and touch panels, electronic devices such as mobile phones are usually provided with buttons for controlling the power switch, volume, unlocking, and imaging of the electronic device. At the same time, the electronic device also uses illuminated buttons to increase its functionality and fun. However, the conventional illuminating button usually sets the point light source under the transparent or translucent button, and the light emitted by the light source is directly transmitted through the button, because the distance between the light source and the surface of the button is different, and the uneven reflection around the surface causes The surface of the button is unevenly received, resulting in uneven brightness of the light passing through the button, which affects its visual effect.

In view of the above, it is necessary to provide a button structure with uniform brightness.

In addition, it is necessary to provide an electronic device to which the key structure is applied.

A button structure includes a circuit board, a switch module, a light-emitting component, and a button body. The switch module, the light-emitting component, and the button body are disposed on the circuit board, and the button body includes a light guide member and a pressing member. The pressing member is disposed on the light guiding member and aligned with the switch module. The pressing member is pressed to trigger the switch module to control the light emitting component to emit light. The light guiding member includes a bottom wall and is disposed around the bottom a peripheral wall of the peripheral wall of the wall, the peripheral wall and the bottom wall forming at least one accommodating cavity, the pressing member is received in the accommodating cavity, the peripheral wall has an annular top portion, and has a light guiding surface corresponding to the illuminating component, Light emitted by the illuminating component enters the light guide through the light guiding surface, and then is emitted from the annular top of the peripheral wall.

An electronic device includes a housing and a button structure disposed on the housing, the button structure includes a circuit board, a switch module, a light emitting component, and a button body, wherein the switch module, the light emitting component, and the button body are disposed on the button a circuit board, the button body includes a light guiding member and a pressing member, the pressing member is disposed on the light guiding member, and is aligned with the switch module, and the pressing member is pressed to trigger the switch module to control the light emitting component to emit light The light guide member includes a bottom wall and a peripheral wall surrounding the periphery of the bottom wall. The peripheral wall and the bottom wall form at least one accommodating cavity. The pressing member is received in the accommodating cavity, and the peripheral wall has a circular top. And having a light guiding surface corresponding to the light emitting component, the light emitted by the light emitting component enters the light guiding member through the light guiding surface, and then is emitted from the annular top of the peripheral wall. The annular top is exposed to the housing.

The peripheral wall of the button structure according to the preferred embodiment of the present invention forms an arcuate light guiding surface corresponding to the light emitting component, and a reflective layer is disposed on the outer surface of the light shielding portion, so that the light emitted by the light emitting component passes through the guiding The smooth surface enters the light guide and is then emitted from the annular top of the light guide, and the brightness of the light is more uniform.

100, 400, 500‧‧‧ button structure

200‧‧‧Mobile Phone

300‧‧‧ Digital Camera

60‧‧‧shell

10‧‧‧ boards

20‧‧‧Switch Module

30‧‧‧Lighting components

33‧‧‧The first group of light-emitting elements

35‧‧‧Second group of light-emitting elements

37‧‧‧The third group of light-emitting elements

40‧‧‧Key body

41‧‧‧Light guides

411‧‧‧ top

412‧‧‧ bottom wall

413‧‧‧Walls

414‧‧‧through hole

415‧‧‧ card slot

416‧‧‧Light guide

417‧‧‧Lighting Department

418‧‧‧reflective layer

43‧‧‧Pressing parts

431‧‧‧ Pressing Department

432‧‧‧Resistance Department

433‧‧‧Cars Department

434‧‧‧ top wall

435‧‧‧ side wall

436‧‧‧ pressing surface

437‧‧‧Materials

45‧‧‧Flexible parts

46‧‧‧First accommodation chamber

47‧‧‧Second accommodating chamber

48‧‧‧ accommodating slots

1 and 2 are perspective views of a key structure for an electronic device according to a first preferred embodiment of the present invention.

3 is a perspective view of a key structure of a first preferred embodiment of the present invention.

Figure 4 is an exploded view of the button structure shown in Figure 2.

FIG. 5 is another perspective exploded view of the button structure shown in FIG. 2. FIG.

Figure 6 is a cross-sectional view of the button structure of Figure 3 taken along the line IV-IV.

Figure 7 is an exploded view of a key structure of a second preferred embodiment of the present invention.

Figure 8 is a cross-sectional view showing a key structure of a third preferred embodiment of the present invention.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , the button structure 100 of the first preferred embodiment of the present invention is applicable to an electronic device having a button, such as a mobile phone 200 and a digital camera 300, and the electronic device includes The housing 60 and the button structure 100 are disposed on the housing 60 and partially exposed. The button structure 100 can control power switch, volume, unlock, camera, and the like of the electronic device.

Referring to FIG. 4 and FIG. 5 , the button structure 100 includes a circuit board 10 , a switch module 20 , a light emitting component 30 , and a button body 40 .

The circuit board 10 is a flexible circuit board. The switch module 20, the light-emitting component 30 and the button body 40 are disposed on the circuit board 10.

The switch module 20 is disposed at a substantially intermediate position of the circuit board 10, and pressing the switch module 20 controls the light-emitting component 30 to emit light.

The lighting assembly 30 includes at least one set of light emitting elements, each set of light emitting elements including at least one light emitting element. In the preferred embodiment, the light-emitting assembly 30 includes a set of light-emitting elements, and the set of light-emitting elements includes two light emitting diodes (LEDs). The two LEDs are white LEDs. The two LEDs are respectively disposed on two sides of the switch module 20 .

The button body 40 is disposed on the switch module 20 and the light-emitting assembly 30. The button body 40 includes a light guide 41, a pressing member 43, and an elastic member 45.

The light guide 41 is made of a transparent or translucent material and is substantially cylindrical, including a bottom wall 412 and a peripheral wall 413. The bottom wall 412 is generally circular. The peripheral wall 413 is generally an annular hollow cylinder having an annular top 411. The peripheral wall 413 is disposed around the periphery of the bottom wall 412 , and forms a first accommodating cavity 46 and a second accommodating cavity 47 respectively on the two sides of the bottom wall 412 .

The bottom wall 412 is provided with a through hole 414 at a substantially central position. A substantially rectangular card slot 415 is defined in each of the two sides of the through hole 414. A light guiding surface 416 corresponding to the light emitting component 30 is formed on the outer side of the peripheral wall 413 (see FIG. 5 ). The light guiding surface 416 can be a concave surface, preferably a curved surface, for guiding the light emitted by the light emitting component 30 . It is to the peripheral wall 413 of the light guiding member 41 and is uniformly exposed from the annular top portion 411 of the peripheral wall 413. Because the light guiding surface 416 has an arc-shaped structure, the light emitted by the light emitting component 30 passes through the curved light guiding surface 416, is evenly introduced into the peripheral wall 413, and is transmitted to the annular top portion 411 to be uniformly exposed.

In the preferred embodiment, the outer side of the peripheral wall 413 is formed with two light guiding surfaces 416 to respectively correspond to the two light emitting diodes. The two light guiding surfaces 416 are respectively adjacent to a card slot 415.

The light guiding member 41 further includes the light shielding portion 417 disposed corresponding to the light emitting assembly 30. The light shielding portion 417 is integrally formed with the bottom wall 412 and the peripheral wall 413, and is also made of a transparent or translucent material. In the preferred embodiment, the light guide 41 includes two light shielding portions 417. Each of the light shielding portions 417 is substantially The "U" shape is formed by vertically extending outside the peripheral wall 413. The outer surface of the light shielding portion 417 is provided with a light reflecting layer 418 formed of a light reflecting material applied or adhered to the outer surface of the light shielding portion 417. The light shielding portion 417 corresponds to the light guiding surface 416 and is connected to the circuit board 10 to form a receiving groove 48 having an opening together with a portion of the peripheral wall 413 and a portion of the circuit board 10 to shield the light guiding surface 416 and The corresponding light-emitting component 30 is enclosed in the accommodating groove 48. The light emitted by the light-emitting assembly 30 enters the light-shielding portion 417 and is reflected into the peripheral wall 413, and is emitted from the top portion 411, so that the light is introduced into the light guide member 41 as much as possible. It can be understood that the shielding layer 418 can also be disposed on the inner surface of the light shielding portion 417 to directly reflect the light emitted by the light emitting assembly 30 into the peripheral wall 413 and be emitted by the top portion 411.

The pressing member 43 includes a pressing portion 431 and a resisting portion 432 and a holding portion 433 protruding from the pressing portion 431 .

The pressing portion 431 includes a top wall 434 and a side wall 435. The top wall 434 is generally circular. In other embodiments, the top wall 434 can be generally square or elliptical. The side wall 435 is generally an annular hollow cylinder that surrounds the periphery of the top wall 434. The top wall 434 includes a pressing surface 436 and a mating surface 437 opposite the pressing surface 436. The pressing surface 436 is enclosed by the annular top portion 411 and exposed to the housing 60 together with the annular top portion 411.

The abutting portion 432 is substantially cylindrical and protrudes from a substantially central position of the mating surface 437 and corresponds to the through hole 414 and can pass through the through hole 414 and be aligned with the switch module 20 . In the preferred embodiment, the latching portion 433 is a pair of oppositely disposed hooks that are disposed on the mating surface 437 and are located on opposite sides of the resisting portion 432 and correspond to the card slot 415. Slot 415.

The elastic member 45 is a spring that is sleeved on the abutting portion 432 and abuts between the mating surface 437 of the pressing member 43 and the bottom wall 412 of the light guiding member 41 to provide the pressing member 43 to move up and down relative to the light guiding member 41. elastic force.

Referring to FIG. 6 together, when the button structure 100 is assembled, first, the switch module 20 and the light-emitting assembly 30 are disposed on the circuit board 10. Then, the pressing member 43 and the elastic member 45 are attached to the light guiding member 41. The elastic member 45 is sleeved on the abutting portion 432 . The pressing portion 431 is received in the first accommodating cavity 46. The abutting portion 432 passes through the through hole 414. The latching portion 433 passes through the card slot 415 and is retained in the card slot 415 to form the button body 40. Moreover, the button body 40 is mounted on the circuit board 10 such that the switch module 20 is received in the second accommodating cavity 47, and the resisting portion 432 is aligned with the switch module 20. The button body 40 can be fixed to the circuit board 10 by pasting. on. In the preferred embodiment, the light-emitting component 30 is located outside the peripheral wall of the light guide 41, aligned with the light-guiding surface 416, and located below the light-shielding portion 417.

When in use, the elastic member 45 is elastically deformed by the pressing surface 436 of the pressing member 43 , and the pressing member 43 is moved toward the switch module 20 until the end of the resisting portion 432 presses the switch module 20 to control the light. The component 30 emits light, and the light emitted by the light-emitting component 30 is guided to the light guiding member 41 via the light guiding surface 416, and is transmitted along the peripheral wall 413 to the annular top portion 411, so that the periphery of the pressing member 43 exhibits a light-emitting state. The pressing member 43 is released, and the pressing member 43 is automatically reset by the elastic recovery of the elastic member 45.

Referring to FIG. 7 , the button structure 400 of the second preferred embodiment of the present invention is substantially the same as the button structure 100 . The difference is that the light-emitting component 30 includes two sets of light-emitting components, respectively, a first group of light-emitting components 33 and The second group of light-emitting elements 35. The first set of light-emitting elements 33 and the second set of light-emitting elements 35 produce different colors of illumination. In the preferred embodiment, the first group of light-emitting elements 33 includes two white LEDs respectively disposed on two sides of the switch module 20, and the second group of light-emitting elements 35 includes two red LEDs respectively disposed on the The two sides of the switch module 20 are adjacent to the two white LEDs. In addition, the two white LEDs and the two red LEDs may be alternately disposed on both sides of the switch module 20 such that the two colors of light emitted by the two colors are more uniformly diffused on the peripheral wall 413 and uniformly from the ring. The top 411 is emitted. The number of sets of the light-emitting elements 30, the number of LEDs of each group of light-emitting elements, and the color and arrangement of the light-emitting elements 30 may be other numbers, colors, and arrangements without particular limitation.

It can be understood that the switch module 20 can include a first pressing state and a second pressing state according to the degree of pressing. When the pressing member 43 presses the switch module 20 to the first pressing state, the switch module 20 controls the first group of light emitting elements 33 to emit white light. When the pressing member 43 continues to press the switch module 20 to the second pressing state, the switch module 20 controls the second group of the light emitting elements 35 to emit red light. As such, the lighting assembly 30 can be used to display different functional states of the electronic device. For example, when the user uses the button structure 100 to control the electronic device to perform shooting, when the pressing member 43 presses the switch module 20 to the first pressing state, the first group of the light-emitting elements 33 emits white light, and the display electronic device performs focusing. When the pressing member 43 continues to press the switch module 20 to the second pressing state, the second group of the light emitting elements 35 emits red light, and the display electronic device performs shooting. Therefore, the user can intuitively determine the electronic color according to the color of the light guiding member 41. The functional status of the device. It can be understood that when the second group of light-emitting elements 35 emit light, the first group of light-emitting elements 33 can be extinguished or simultaneously emit light.

It can be understood that when the pressing member 43 presses the switch module 20 to the first pressing state, the switch module 20 controls the white light of the first group of the light-emitting elements 33 to blink, and the display electronic device performs focusing, and when the pressing member 43 continues to press. When the switch module 20 is in the second pressing state, the second group of light-emitting elements 35 emits red light in a blinking state, and the display electronic device performs imaging. Therefore, the user can intuitively determine the functional state of the electronic device according to the color or the light-emitting state of the light guide 41.

Referring to FIG. 8, the button structure 500 of the third preferred embodiment of the present invention is substantially the same as the button structure 400, except that the light-emitting assembly 30 can further include a third group of light-emitting elements 37, the pressing member. 43 may be made of a transparent or translucent material, and the third group of light-emitting elements 37 are disposed on the circuit board 10 and housed in the second accommodating cavity 47 to emit light into the light guide 41 and along the peripheral wall. The 413 is transmitted to the annular top portion 411 and the pressing surface 436 of the pressing member 43, and is emitted. In the preferred embodiment, the third group of light-emitting elements 37 includes two green LEDs disposed symmetrically with respect to the switch module 20 .

The number of LEDs and the color and arrangement of the light-emitting elements of the third group of light-emitting elements 37 may be other numbers, colors, and arrangements without particular limitation. It can be understood that when the first group of light-emitting elements 33 and the second group of light-emitting elements 35 emit light, the third group of light-emitting elements 37 also emit light, so that the entire button structure 100 exhibits different colors.

It can be understood that the elastic member 45 can be omitted, and the resisting portion 432 itself can be made of an elastic material such as rubber, foam or the like.

The peripheral wall 413 of the button structure 100 of the preferred embodiment of the present invention forms an arcuate light guiding surface 416 corresponding to the light emitting component 30. Further, a reflective layer is disposed on the outer surface of the light shielding portion 417, so that the light emitting component 30 is provided. The emitted light enters the light guiding member 41 through the light guiding surface 416, and is emitted from the annular top portion 411 of the light guiding member 41, and the brightness of the light is more uniform. Moreover, the light-emitting component 30 is disposed outside the light guide 41, which can reduce the thickness of the button structure 100, and is advantageous for reducing the volume of the electronic device.

100‧‧‧Key structure

10‧‧‧ boards

20‧‧‧Switch Module

30‧‧‧Lighting components

40‧‧‧Key body

41‧‧‧Light guides

411‧‧‧ top

414‧‧‧through hole

415‧‧‧ card slot

416‧‧‧Light guide

417‧‧‧Lighting Department

43‧‧‧Pressing parts

431‧‧‧ Pressing Department

432‧‧‧Resistance Department

433‧‧‧Cars Department

435‧‧‧ side wall

436‧‧‧ pressing surface

45‧‧‧Flexible parts

46‧‧‧First accommodation chamber

47‧‧‧Second accommodating chamber

48‧‧‧ accommodating slots

Claims (10)

A button structure includes a circuit board, a switch module, a light-emitting component, and a button body. The switch module, the light-emitting component, and the button body are disposed on the circuit board, and the button body includes a light guide member and a pressing member. The pressing member is disposed on the light guiding member and aligned with the switch module. The pressing member is pressed to trigger the switch module to control the light emitting component to be illuminated. The improvement is that the light guiding member comprises a bottom wall and a circumference. a peripheral wall disposed at a periphery of the bottom wall and a light-shielding portion extending perpendicularly from an outer side of the peripheral wall, the peripheral wall and the bottom wall forming at least one accommodating cavity, the pressing member being received in the accommodating cavity, the peripheral wall having a ring The top of the shape has a light guiding surface corresponding to the light emitting component, and the light shielding portion corresponds to the light guiding surface and is connected to the circuit board, so as to form a receiving groove with an opening together with a part of the peripheral wall and a part of the circuit board The light-guiding surface and the corresponding light-emitting component are disposed in the accommodating groove, a part of the light emitted by the light-emitting component directly enters the light guide through the light-guiding surface, and another part of the light is reflected by the light-shielding part to The light guide After entering the light guide member, and then collectively sent from the top of the annular peripheral wall. The button structure of claim 1, wherein the light guiding surface is a curved surface. The button structure according to claim 2, wherein the light shielding portion is substantially "U" shaped, and the outer surface thereof is provided with a light reflecting layer. The button structure of claim 1, wherein the light-emitting component comprises a first group of light-emitting elements and a second group of light-emitting elements, the switch module comprising a first pressing state and a second pressing state; When the switch module is pressed to the first pressing state, the switch module controls the first group of light-emitting elements to emit light, and when the pressing member continues to press the switch module to the second pressing state, the switch module controls the second group of light-emitting The component emits light. The button structure of claim 1, wherein the pressing member has a pressing surface, and the annular top portion surrounds the pressing surface. The button structure of claim 1, wherein the button body comprises an elastic member that is abutted between the light guide and the pressing member. The button structure of claim 1, wherein the pressing member includes a pressing portion and a resisting portion protruding from the pressing portion, the bottom wall defines a through hole, and the resisting portion passes through the through hole. And align the switch module. The button structure of claim 7, wherein the pressing member further includes a latching portion protruding from the pressing portion, the bottom wall opening a card slot, the latching portion passing through the card slot, and the card Hold in the card slot. The button structure of claim 1, wherein the light emitting component is disposed outside the light guiding member, the light guiding surface corresponds to the light emitting component, and the light emitting component is surrounded by the light guiding member in a slightly " ㄇ" in the space of the font. An electronic device comprising a housing and a button structure disposed on the housing, wherein the button structure is the button structure according to any one of claims 1-9, wherein the annular top is exposed to the On the housing.