TWI438802B - Power button module and electric apparatus using the same - Google Patents

Description

Power button module and electronic device using the power button module

The invention relates to a power button module and an electronic device using the power button module.

The electronic device is usually provided with a power button module to control the power on and off. A typical power button module includes a printed circuit board, a support sheet, a push switch, and a spring piece disposed between the push switch and the printed circuit board. The housing of the electronic device is provided with a mounting hole. When assembling, firstly, the pressing switch is disposed in the mounting hole, and then the elastic piece is disposed on the side of the pressing switch adjacent to the printed circuit board, and then the supporting piece is fixedly connected with the housing, so that the elastic piece is disposed on the pressing switch and the printed circuit board. Between, and preset a certain amount of compression to elastically resist the push switch. During the above installation process, the operator needs to manually press the switch and the elastic piece, and fix the support piece and the housing to sandwich the elastic piece, so that the elastic piece is difficult to be accurately positioned, resulting in inconvenient assembly.

In view of the above, it is necessary to provide a power button module that is simple in structure and easy to assemble, and an electronic device using the power button module.

A power button module includes a printed circuit board, a support member fixedly connected to the printed circuit board, and a push switch. The support member is integrally formed with an abutting portion elastically resisting the pressing switch, and the supporting member and the pressing switch are formed with a hook, and the other is formed with a latching portion that is engaged with the hook, and the latching portion is formed on the push switch and includes a stepped surface that is engaged with the hook and a resisting portion that extends between the two hooks.

Moreover, an electronic device includes a housing and a power button module. The housing defines a mounting hole, and the power button module includes a printed circuit board, a support member fixedly connected to the printed circuit board, and a push switch. The support member is fixedly connected to the housing, and the push switch penetrates the mounting hole. The support member is integrally formed with an abutting portion elastically resisting the pressing switch, the supporting member and the pressing switch are formed with a hook, and the other is formed with a clamping portion that is engaged with the hook, the card The holding portion is formed on the push switch and includes a step surface that is engaged with the hook and a resisting portion that extends between the two hooks.

The support member of the power button module is formed to elastically resist the abutting portion of the push switch, so that the elastic member is not separately provided, which simplifies the structure. Since the supporting member and the pressing switch are connected by the hook and the holding portion of the pressing portion, when assembling, the power button module can be assembled first to form an assembly module, and then the pressing switch is installed through the housing. The hole is fixedly connected to the support member to mount the power button module to the housing, which facilitates assembly. In addition, the support member and the push switch are easily and accurately positioned, so that the resisting portion can provide an appropriate elastic force, so that the push switch has a better operational feel.

100‧‧‧Electronic devices

20‧‧‧shell

30‧‧‧Power button module

21‧‧‧Installation holes

31‧‧‧Printed circuit board

32‧‧‧Support

33‧‧‧Press switch

311‧‧‧ first surface

312‧‧‧ first surface

313‧‧‧Shrap

314‧‧‧First electrical contact

315‧‧‧Second electrical contact

321‧‧‧ Housing Department

323‧‧‧ bottom wall

324‧‧‧Resistance Department

325‧‧‧ hook

3241‧‧‧elastic support arm

3242‧‧‧Resistance arm

331‧‧‧Cap

332‧‧‧Connecting Department

3313‧‧‧Contacts

334‧‧‧Cars Department

3341‧‧‧step surface

3342‧‧‧Resistance

1 is a partial perspective view of an electronic device according to an embodiment of the present invention.

2 is a schematic view of another perspective of the electronic device shown in FIG. 1.

3 is an exploded perspective view of the power button module of the electronic device shown in FIG. 1.

4 is a schematic view of another perspective of the power button module shown in FIG.

The power button module of the present invention and the electronic device using the power button module will be further described in detail below with reference to the accompanying drawings and specific embodiments. The power button module can be applied to electronic devices such as a notebook computer, a platform computer, and a liquid crystal display device.

Referring to FIG. 1 and FIG. 2 , the electronic device 100 of the embodiment of the present invention includes a housing 20 and a power button module 30 .

The housing 20 is provided with a mounting hole 21 for mounting the power button module 30.

Referring to FIG. 3 and FIG. 4 simultaneously, the power button module 30 includes a printed circuit board 31, a support member 32 fixedly connected to the printed circuit board 31, and a push switch 33.

The printed circuit board 31 has a first surface 311 and a second surface 312 opposite the first surface 311. The second surface 312 is provided with a spring piece 313 that elastically resists the push switch 33. The elastic piece 313 has a circular shape and protrudes toward one side of the push switch 33. The first surface 311 is provided with a first electrical contact 314 and a second electrical contact 315 which are electrically insulated from each other and disposed adjacent to each other. When the elastic piece 313 is pressed, the first electrical contact 314 and the second electrical contact 315 are electrically connected, and the printed circuit board 31 can generate a control signal, and the related control circuit controls the power circuit to be turned on and off according to the control signal.

The support member 32 is substantially a circular metal piece, and a receiving portion 321 is recessed in the middle portion. The push switch 33 can be partially housed in the receiving portion 321 . The receiving portion has a bottom wall 323, and the printed circuit board 31 is fixedly disposed on the bottom wall 323. The surface of the support member 32 for connecting to the housing 20 of the electronic device 100 is attached with a double-sided tape for bonding with the housing 20.

The bottom wall 323 is substantially annular, and is integrally formed with a plurality of abutting portions 324 and a plurality of hooks 325. The abutting portion 324 is for elastically resisting the push switch 33, and the hook 325 is for holding with the push switch 33.

Each abutment portion 324 includes an elastic support arm 3241. The elastic support arm 3241 has a free end (not shown). The free end is bent to form a resisting arm 3242. The abutting arm 3242 is for surface contact with the push switch 33 to provide a relatively stable supporting force.

In the present embodiment, the hooks 325 are provided in two pairs and are formed on the outer periphery of the bottom wall 323. Two pairs of hooks 325 are respectively disposed on two sides of the symmetric plane of the bottom wall 323. The number of the abutting portions 324 is three, formed on the inner circumference of the bottom wall 323, and is disposed at substantially equal intervals in the circumferential direction.

The abutting portion 324 and the hook 325 can be formed by a stamping process to facilitate molding.

The push switch 33 includes a cap body 331 and a connecting portion 332 provided at a periphery of the cap body 331. The cap body 331 is formed with a contact 3313 on the side adjacent to the printed circuit board 31. The contact 3313 is used to touch the elastic piece 313. The peripheral edge of the connecting portion 332 forms two opposite holding portions 334. The catching portion 334 is for engaging with the hook 325 of the support member 32 to connect the push switch 33 and the support member 32.

Each of the retaining portions 334 includes a stepped surface 3341 and a resisting portion 3342 extending from a side of the stepped surface 3341 along a radial direction of the cap 331.

When the power button module 30 is assembled, the hook 325 of the support member 32 is engaged with the stepped surface 3341 of the latching portion 334 of the push switch 33, and the resisting portion 3342 is extended between the adjacent hooks 325 to The push switch 33 is restricted from rotating relative to the support member 32. The abutting portion 324 is pressed to generate a predetermined elastic force to abut the connecting portion 332 of the push switch 33.

After the power button module 30 is assembled, the cap 331 of the power module 30 pressing the switch 33 is passed through the mounting hole 21 of the housing 20, and the support member 32 is fixedly connected to the housing 20 of the electronic device 100. The support member 32 and the housing 20 are fixed by double-sided adhesive bonding.

Assembly of the power button module 30 and mounting of the power button module 30 to the housing 20 can be performed in parallel The process is performed to avoid assembling the plurality of workstations of the electronic device 100 for installing the components of the power button module 30 for assembly and assembly of the assembly line.

When a pressure is applied to the push switch 33 to overcome the elastic force of the resisting portion 324, the push switch 33 moves toward the printed circuit board 31, and the contact 3313 touches the elastic piece 313 to make the first electrical contact 312 and the second electrical property. Contact 313 is electrically connected. When the pressure of the push switch 33 is released, it is reset by the elastic force of the resisting portion 324, and the circuit is disconnected. Since the abutting portion 324 and the hook 325 are both formed on the support member 32, it is not necessary to separately provide the elastic member, thereby simplifying the structure. Since the support member 32 is engaged with the push switch 33, it is easy to accurately position, so that the resisting portion 324 can provide a stable elastic force, so that the push switch 33 has a better pressure contact and rebound feel. It can be understood that the hook 325 can also be disposed on the push switch 33, and the catch portion 334 can be disposed on the support member 32.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

31‧‧‧Printed circuit board

311‧‧‧ first surface

312‧‧‧ first surface

313‧‧‧Shrap

32‧‧‧Support

321‧‧‧ Housing Department

324‧‧‧Resistance Department

325‧‧‧ hook

3241‧‧‧elastic support arm

3242‧‧‧Resistance arm

33‧‧‧Press switch

331‧‧‧Cap

332‧‧‧Connecting Department

334‧‧‧Cars Department

3341‧‧‧step surface

3342‧‧‧Resistance

Claims (8)

A power button module includes a printed circuit board, a support member fixedly connected to the printed circuit board, and a push switch, wherein the support member is integrally formed with an abutting portion elastically resisting the push switch, the support member and the support member One of the push switches is formed with a hook, and the other is formed with a catch portion that is engaged with the hook. The latch portion is formed on the push switch and includes a stepped surface that is engaged with the hook and extends The resisting part between the two hooks. The power button module of claim 1, wherein the support member has a receiving portion recessed therein, the pressing switch portion is received in the receiving portion, the receiving portion has a bottom wall, and the resisting portion is formed on the bottom portion The bottom wall. The power button module of claim 2, wherein the abutting portion comprises an elastic supporting arm, the elastic supporting arm has a free end, and the free end is bent to form an abutting arm that is in contact with the pressing switch surface. The power button module of claim 2, wherein the hook is plural and formed on the bottom wall, the abutting portion is plural, and is disposed at substantially equal intervals in the circumferential direction, the hook and the resist The part is formed by stamping. An electronic device includes a housing and a power button module, the housing is provided with a mounting hole, and the power button module comprises a printed circuit board, a support member fixedly connected to the printed circuit board, and a push switch, the support member and the shell The fixing switch is connected to the mounting hole, and the pressing member is integrally formed with a resisting portion elastically resisting the pressing switch, and the supporting member forms a hook with one of the pressing switches, and A latching portion is formed on the hook, and the latching portion is formed on the push switch and includes a stepped surface that is engaged with the hook and a resisting portion that extends between the two hooks. The electronic device of claim 5, wherein a recess is formed in the middle of the support member. The pressing switch portion is received in the receiving portion, and the receiving portion has a bottom wall, and the resisting portion and the hook are formed on the bottom wall. The electronic device of claim 6, wherein the abutting portion comprises an elastic supporting arm having a free end bent to form an abutting arm in contact with the pressing switch surface. The electronic device of claim 6, wherein the support member is attached with a double-sided tape and bonded to the housing by the double-sided tape.