CN213585534U

CN213585534U - Excitation device and terminal

Info

Publication number: CN213585534U
Application number: CN202021185814.4U
Authority: CN
Inventors: 项吉
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-06-29
Anticipated expiration: 2030-06-23

Abstract

The disclosure relates to an excitation device and a terminal. The excitation device includes: the terminal is applied to the terminal, and is characterized in that the excitation device comprises a shell, a vibration unit and an electromagnetic unit; an accommodating space is formed in the shell, and the vibration unit and the electromagnetic unit are both arranged in the accommodating space of the shell; wherein the vibration unit includes a vibration body and a first elastic member; the vibrating body comprises a mass block and a magnet assembly; the electromagnetic unit includes an electromagnetic coil and a second elastic member. In the embodiment of the disclosure, by constructing a system of magnetic force and vibration inside the excitation device, adding a plurality of elastic components and adding a mass block on the magnet body, the vibration effect of the whole excitation device is better. When the excitation device is applied to the terminal, the excitation device of the embodiment of the disclosure can generate different types of vibration, so that the terminal can be prevented from being additionally provided with additional devices, the cost is saved, meanwhile, the internal stacking space of the terminal can be reduced, and the layout space of a circuit in the terminal is saved.

Description

Excitation device and terminal

Technical Field

The present disclosure relates to the field of terminal technologies, and in particular, to an excitation device and a terminal.

Background

With the increasing processing capability of terminal devices such as mobile phones, game machines, multimedia players, and the like, more and more users are using terminals to watch videos, play games, and surf the internet. The processing previously relied on computers is currently substantially done with the aid of terminals, which have replaced computers in many fields of application. The time for the user to use the terminal is longer and longer, and the experience is more and more critical. As terminals are almost every day carried on by users, the requirements on the industrial design of the terminals are also more and more critical, e.g. higher and higher screen fractions and better gaming experience are currently of interest to users. And the screen occupation ratio of the terminal is often limited by the setting of the speaker outside the terminal, and the like.

Disclosure of Invention

The present disclosure provides an excitation device and a terminal to solve the problems in the prior art.

According to a first aspect of the embodiments of the present disclosure, there is provided an excitation device applied to a terminal, the excitation device including a housing, a vibration unit, and an electromagnetic unit; an accommodating space is formed in the shell, and the vibration unit and the electromagnetic unit are both arranged in the accommodating space of the shell;

wherein the vibration unit includes a vibration body and a first elastic member; the vibrating body comprises a mass block and a magnet assembly; the electromagnetic unit includes an electromagnetic coil and a second elastic member.

Optionally, the magnet assembly includes a first magnet and a second magnet, and the first magnet and the second magnet are nested in the cavity inside the mass.

Optionally, the housing includes an upper housing and a lower housing, the upper housing and the lower housing are fixedly connected in a sealing manner to form the accommodating space, and the vibration unit is disposed above the electromagnetic unit and close to the upper housing in the accommodating space.

Optionally, the first elastic component is disposed between an inner wall of the upper housing and the mass block;

the vibrating body is attached to the electromagnetic coil through the second elastic member.

Optionally, the excitation device further includes:

the printed circuit board is arranged in the accommodating space on the inner side of the lower shell and is connected with the electromagnetic coil.

Optionally, a damping pad is further disposed between the first elastic member and the vibrating body.

Optionally, the electromagnetic coil further comprises an iron core and an iron core ring, wherein the iron core is fixedly connected with the iron core ring and arranged in the inner cavity of the electromagnetic coil.

According to a second aspect of the embodiments of the present disclosure, there is provided a terminal having a display screen with an actuation device as described above affixed to a rear surface of the display screen.

Optionally, the excitation device is disposed close to the top middle frame and the side middle frame on the back of the display screen.

Optionally, the excitation device is attached to the back of the display screen and electrically connected to a switch gating circuit, and the switch gating circuit is electrically connected to at least a power management integrated circuit of the terminal, an internal audio bus interface of the integrated circuit, and a Codec (Codec).

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

in the embodiment of the disclosure, by constructing a system of magnetic force and vibration inside the excitation device, a plurality of elastic components are added, and a mass block is added on the magnet body, so that the vibration effect of the whole excitation device is better. When the excitation device is applied to the terminal, the excitation device of the embodiment of the disclosure can generate different types of vibration, so that the terminal can be prevented from being additionally provided with additional devices, the cost is saved, meanwhile, the internal stacking space of the terminal can be reduced, and the layout space of a circuit in the terminal is saved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is an exploded view of an excitation device according to an embodiment of the present disclosure.

Fig. 2 is a schematic perspective view of a mass of an excitation device according to an embodiment of the present disclosure.

Fig. 3 is a schematic top view of a mass of an excitation device according to an embodiment of the disclosure.

Fig. 4 is a schematic structural diagram of a terminal including an excitation device according to an embodiment of the disclosure.

FIG. 5 is a schematic diagram illustrating an electrical connection of a terminal including an excitation device according to an embodiment of the disclosure

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1 is an exploded view of an excitation device according to an embodiment of the present disclosure, and as shown in fig. 1, the excitation device according to an embodiment of the present disclosure is applied to a terminal, and includes a housing, a vibration unit 20, and an electromagnetic unit 30; an accommodating space is formed in the housing, and the vibration unit 20 and the electromagnetic unit 30 are both arranged in the accommodating space of the housing;

the vibration unit 20 includes a vibration body and a first elastic member 21; the vibrating body includes a mass 22 and a magnet assembly; the electromagnetic unit 30 includes an electromagnetic coil and a second elastic member 31.

In some embodiments, the first elastic member and the second elastic member may be spring plates, plate springs, coil springs, disc springs, elastic rubber pads, or the like. In some embodiments, the first elastic member 21 and the second elastic member 31 may be implemented by elastic sheets, or implemented by springs, etc. One of the first elastic member and the second elastic member may be implemented by a spring plate, and the other may be implemented by a spring.

In some embodiments, a receiving cavity is disposed in the mass 22 to fill the electromagnetic assembly in the receiving cavity. The shape of the accommodating cavity can be rectangular, oval, etc., which is not limited by the disclosure. The magnet assembly has a shape completely matching the receiving cavity of the mass 22, and the magnet assembly can be clamped in the receiving cavity of the mass 22, so that the electromagnetic assembly is fixedly connected with the mass 22.

In some embodiments, the magnet assembly includes a first magnet 23 and a second magnet 24, the first magnet 23 and the second magnet 24 being nested in a cavity inside the proof mass 22.

In some embodiments, the housing includes an upper housing 10 and a lower housing 40, the upper housing 10 and the lower housing 40 are hermetically and fixedly connected to form the accommodating space, and the vibration unit 20 is disposed in the accommodating space above the electromagnetic unit 30 and close to the upper housing 10. And the electromagnetic unit 30 is disposed in the accommodating space near the lower case 40.

Fig. 2 is a schematic perspective view of a mass of an excitation device according to an embodiment of the present disclosure, and fig. 3 is a schematic top view of a mass of an excitation device according to an embodiment of the present disclosure, as shown in fig. 2 and fig. 3, when the vibration unit 20 according to an embodiment of the present disclosure is disposed in the upper housing, a gap 13 is formed between the mass 22 and the accommodating space of the upper housing 10, and based on the gap 13, the vibration unit 20 according to an embodiment of the present disclosure can move up and down along the paper surface of fig. 2 of the housing. The first magnet 23 and the second magnet 24 are inserted into a cavity inside the mass 22 and are fixedly connected to the mass 22. In some embodiments, as an implementation manner, connection holes may be provided in the first magnet 23 and the second magnet 24, and the first magnet 23 and the second magnet 24 are integrally connected to the mass block 22 by inserting bolts or screws into the mass block 22.

In some embodiments, the first elastic member 21 is disposed between an inner wall of the upper housing 10 and the mass 22;

the vibrator is attached to the electromagnetic coil of the electromagnetic unit 30 through the second elastic member 31.

In some embodiments, the excitation device further comprises:

the printed circuit board 35 is disposed in the accommodating space inside the lower housing 40, and the printed circuit board 35 is connected to the electromagnetic coil.

In some embodiments, a damping pad 25 is further disposed between the first elastic member 21 and the vibration body.

In some embodiments, the electromagnetic coil further includes a core 33, a core ring 32, and a coil body 34, wherein the core 33 and the core ring 32 are fixedly connected and disposed in the electromagnetic coil inner cavity. In some embodiments, in particular, the coil body 34 is wound on the core ring 32 and around the core 33. The printed circuit board 35 is connected to a power supply and supplies a periodic alternating voltage to the electromagnetic coil, so that the electromagnetic coil generates a magnetic field to provide an attractive force to the vibration unit 20, the vibration unit 20 moves in a direction close to the electromagnetic coil, and the second elastic member 31 is compressed; after the attractive force is released or the repulsive force is provided, under the combined action of the elastic force or the repulsive force of the second elastic member 31 and the elastic force of the second elastic member 31, the vibration unit 20 moves in a direction away from the electromagnetic coil, the first elastic member 21 moves in a direction close to the upper case 10, and when the electromagnetic coil provides the attractive force to the vibration unit 20 again, the vibration unit 20 moves in a direction close to the electromagnetic coil again under the combined action of the elastic force and the attractive force of the first elastic member 21. Thus, the excitation device of the embodiment of the present disclosure linearly vibrates the vibration unit 20 within the housing, and can be used as a vibration device.

In the present disclosure, the coil in the electromagnetic unit 30 of the present disclosure generates a changing magnetic flux, thereby generating an attractive force F, according to which F is BiL, where B is the magnetic field strength, I is the current strength in the energized conductor, and L is the length of the energized conductor in the magnetic field.

In the embodiment of the present disclosure, in order to buffer the vibration of the vibrator, a damping pad 25 is further disposed on the first elastic member 21 between the vibrator and the upper housing 10, so that the vibrator has better buffering. The damping pad 25 may be made of rubber, plastic, or other materials with certain flexibility, which is not limited in this disclosure.

In the embodiment of the present disclosure, a double-sided tape 12 is disposed on the lower case 40 of the excitation device, one side of the double-sided tape 12 is bonded to the lower case 40 of the excitation device of the embodiment of the present disclosure, and the other side of the double-sided tape is bonded to the display screen of the terminal. The foam 11 is disposed on the upper housing 10, mainly considering that the excitation device of the embodiment of the present disclosure needs to be disposed in the terminal, and the housing of the terminal may contact with the excitation device, in order to prevent the excitation device from damaging the housing of the terminal and also avoid the excitation device from acting on the housing of the terminal, the foam 11 is disposed between the excitation device and the housing of the terminal, so that the vibration of the excitation device of the embodiment of the present disclosure only acts on the display screen of the terminal.

In some embodiments, when the excitation device is applied to a terminal, the terminal may be a mobile phone, a game console, a wearable device, a virtual reality device, a personal digital assistant, a notebook computer, a tablet computer, a television terminal, or the like.

Fig. 4 is a schematic diagram of a terminal structure including an actuating device according to an embodiment of the disclosure, as shown in fig. 4, in some embodiments, the actuating device is disposed adjacent to a top middle frame and a side middle frame on the back of the display screen when the actuating device is applied to the terminal.

For example, in the embodiment of the present disclosure, on the back of the main body of the terminal, that is, the side of the terminal opposite to the display screen, an accommodating space matched in shape with the excitation device is provided on the main board of the main body of the terminal, the excitation device is attached to the display screen of the terminal, the thickness of the excitation device is equivalent to the thickness of components such as the main board of the terminal, after the excitation device is installed, the rear housing of the terminal is clamped on the main body of the terminal, and a flexible pad capable of buffering the vibration of the excitation device, such as foam, is provided between the excitation device and the rear housing of the terminal.

Fig. 5 is a schematic view illustrating an electrical connection structure of a terminal including an excitation device according to an embodiment of the present disclosure, and as shown in fig. 5, the excitation device according to an embodiment of the present disclosure can be configured in the terminal. The terminal can be a mobile phone, a game machine, a wearable device, a virtual reality device, a personal digital assistant, a notebook computer, a tablet computer or a television terminal.

In the disclosed embodiment, the excitation device (Haptics/video) is attached to the back of the display screen and electrically connected to the switch gating circuit, and the switch gating circuit is electrically connected to at least the power management integrated circuit, the integrated circuit built-in audio bus interface, and the Codec (Codec) of the terminal.

The Switch gating circuit (Switch) is electrically connected and used for receiving the pulse working voltage output by the Switch gating circuit and driving the display screen to vibrate based on the pulse voltage;

a switch gating Circuit electrically connected to at least a Power Management Integrated Circuit (PMIC) of the terminal, an Inter-IC Sound Bus (I2S) interface of the PMIC, and a Codec (Codec); and the terminal is used for gating the corresponding output interface when the terminal outputs the audio and/or the prompt information, receiving the analog signal corresponding to the audio and/or the prompt information output by the corresponding output interface, generating a pulse working voltage for driving the excitation device based on the analog signal, and outputting the pulse working voltage to the excitation device.

In the embodiment of the present disclosure, the switch gating circuit is electrically connected to a System Power Management Interface (SMPI) of the terminal through the PMIC.

In the embodiment of the disclosure, in a normal mode of the terminal, when a user sets a vibration reminder by using the terminal, such as setting an alarm clock, a reminder note, and the like, and when an operating system of the terminal detects that a reminder condition is satisfied, a signal of the vibration reminder is output to the PMIC through the SMPI, the PMIC directly drives the excitation device, and at this time, the motor is only used as a common Vibrator. Or when the terminal receives an incoming call, the user sets that the incoming call reminder comprises a vibration reminder, the operating system of the terminal outputs a vibration reminder signal to the PMIC through the SMPI, and the PMIC directly drives the excitation device to vibrate so as to remind the user of the terminal. Or, when the terminal is in a screen-off state, and a key or a touch screen is touched by a user, the operating system of the terminal outputs a vibration reminding signal to the PMIC through the SMPI, and the PMIC directly drives the excitation device to vibrate so as to remind the user of the terminal.

The switch gating circuit is electrically connected with the coder and the decoder through a Class H amplifier (Class H);

the switch gating circuit is electrically connected with the I2S interface through a Smart power amplifier (Smart PA);

receiving an analog signal corresponding to prompt information responding to the operation of the terminal when the PMIC is gated by the switch gating circuit; the analog signal is mainly a reminding vibration signal triggered by an incoming call reminder, a key or a screen being touched by mistake or a reminding event.

When the switch gating circuit gates the coder and the decoder, the H-type amplifier amplifies an analog signal corresponding to the audio information output by the coder and the decoder, and the amplified analog signal is output to the switch gating circuit; when the terminal is in a call mode, the exciting device serves as an exciter and can transmit a voice analog signal, and the voice audio signal is transmitted out through the touch screen module through resonance. The audio analog signal mainly means that the terminal receives a voice call signal sent by an opposite terminal during a call, the voice signal is decoded to form an audio signal, the audio signal is amplified through Class H, and the switch gating circuit generates pulse working voltage for triggering the excitation device to vibrate based on the audio signal, so that the excitation device vibrates according to the strength and waveform of the voice input by the opposite terminal, the display screen of the trigger terminal vibrates along with the excitation device, the vibration of the display screen realizes the reduction of the voice input by the opposite terminal, and a user can receive the call voice through the display screen of the terminal.

When the switch gating circuit gates the I2S interface, the Smart PA amplifies the analog signals corresponding to the audio and/or prompt information output by the I2S interface, and the amplified analog signals are output to the switch gating circuit. When in a game mode, the Smart PA is matched with a waveform library associated with the Smart PA to drive the exciting device to provide various vibration experience effects, such as a gunshot sound, a sword waving sound effect, a horseshoe sound, a wheel friction sound, a special sound of certain skills and the like.

In the embodiment of the disclosure, when a user opens a multimedia playing application by using a terminal, and the switch gating circuit gates the I2S interface, the Smart PA amplifies an analog signal corresponding to audio and/or prompt information output by the I2S interface, and the amplified analog signal is output to the switch gating circuit.

In the embodiment of the present disclosure, the switch gating circuit is further electrically connected to a General-purpose input/output (GPIO) interface of the terminal. And the GPIO is used for realizing control information interaction between the terminal and the switch gating circuit.

In the embodiment of the present disclosure, the call voice output by the speaker of the terminal, the voice information output by multimedia playing, and the audio information output in the online or local interactive application may all be output in a vibration manner through the excitation device of the embodiment of the present disclosure.

The excitation device in the embodiment of the disclosure can realize the functions of the receiver, the force touch sense and the vibrator of the terminal, provide different types of vibration, save the cost, reduce the internal stacking space of the terminal, and save the layout space of the circuit in the terminal.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An excitation device is applied to a terminal and is characterized by comprising a shell, a vibration unit and an electromagnetic unit; an accommodating space is formed in the shell, and the vibration unit and the electromagnetic unit are both arranged in the accommodating space of the shell;

2. Excitation device according to claim 1,

the magnet assembly includes a first magnet and a second magnet nested in a cavity inside the proof mass.

3. Excitation device according to claim 1,

the casing includes casing and lower casing, go up casing and casing sealing fixed connection down and form the accommodation space, the vibration unit set up in the electromagnetism unit top is close to go up the casing in the accommodation space.

4. The excitation device of claim 3,

the first elastic part is arranged between the inner wall of the upper shell and the mass block;

5. The excitation device of claim 3, further comprising:

6. The excitation device as claimed in claim 1, wherein a damping spacer is further provided between said first elastic member and said vibration body.

7. The excitation device of claim 1, wherein the electromagnetic coil further comprises a core and a core ring, the core and the core ring being fixedly connected and disposed within the electromagnetic coil cavity.

8. A terminal, characterized in that it has a display screen, on the back of which is affixed an actuation means according to any one of claims 1 to 7.

9. A terminal as claimed in claim 8, characterised in that the actuation means are located proximate to the top and side middle frames of the rear face of the display.

10. The terminal of claim 8, wherein the actuation device is attached to the back side of the display screen and electrically connected to a switch gating circuit, the switch gating circuit being electrically connected to at least a power management integrated circuit, an integrated circuit built-in audio bus interface, and a Codec (Codec) of the terminal.