Vibration module, touch vibration feedback device and electronic equipment

Abstract

The utility model discloses a vibration module, touch control vibration feedback device and electronic equipment, the vibration module comprises a vibration unit and a driving unit, the vibration unit comprises a first vibration assembly and a second vibration assembly, the first vibration assembly can move along a first direction, the second vibration assembly can move along a second direction, the first direction is opposite to the second direction; the driving unit comprises two output ends, and the driving unit alternately outputs a first signal and a second signal through the two output ends; the first signal and the second signal respectively drive the first vibration assembly and the second vibration assembly, so that the first vibration assembly and the second vibration assembly alternately and reversely move in a forced manner; according to the utility model, the driving unit alternately outputs the driving signals in a time-sharing manner so as to control the different vibration assemblies to move in opposite directions, so that the vibration effect is realized; the vibration module can improve the vibration quantity under the condition that the input voltage is limited.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic equipment, and in particular relates to a vibration module, a touch vibration feedback device and electronic equipment. Background Art

[0002] The haptic feedback vibration function is realized through the haptic feedback vibration module (haptic) set on the terminal. The existing electromagnet vibration unit on the market often has only one group. Relying on the input alternating current, the touch panel can vibrate back and forth along the first direction. The electromagnetic force generated between the iron core and the moving iron is always the attraction F. The vibration acceleration a is positively correlated with the attraction. After the elastic pad material, the touch panel mass and the coil resistance are determined, the acceleration value is only related to the voltage of the driver chip power supply; therefore, it can be known that the vibration amount of the vibration module depends on the voltage of the driver chip. However, there is a limit to the boost of the driver chip. The higher the boost level of the chip, the higher the cost. Utility Model Content

[0003] The utility model provides a vibration module, a touch vibration feedback device and an electronic device, aiming to solve the problems of insufficient vibration of the vibration module in the prior art and too high requirements on chip performance, resulting in excessively high costs.

[0004] In order to solve the above technical problems, in a first aspect, the utility model provides a vibration module, which includes:

[0005] a vibration unit comprising a first vibration component and a second vibration component, wherein the first vibration component is movable in a first direction and the second vibration component is movable in a second direction, wherein the first direction is opposite to the second direction; and

[0006] A driving unit comprises two output ends, and the driving unit outputs a first signal and a second signal alternately through the two output ends; the first signal and the second signal are respectively used to drive the first vibration component and the second vibration component to make the first vibration component and the second vibration component alternately forced to move in opposite directions.

[0007] Furthermore, the driving unit includes an H-bridge control circuit, and the H-bridge control circuit periodically and alternately outputs the first signal and the second signal.

[0008] Furthermore, the first vibration component and the second vibration component are symmetrically arranged, and both the first vibration component and the second vibration component include a moving iron, a coil and a stator core. The moving iron is arranged adjacent to the stator core, and the coil is wound on the stator core. The coil is used to generate a magnetic field to attract the moving iron to move a preset distance toward the stator core.

[0009] Furthermore, the stator core includes a supporting portion and a protruding portion, the protruding portion is arranged adjacent to the moving iron, the coil is wound around the protruding portion, and the supporting portion is used for fixing.

[0010] Furthermore, the moving iron is a permanent magnet or a soft magnet.

[0011] Furthermore, the stator core is a permanent magnet or a soft magnet.

[0012] Furthermore, the first vibration component is an LRA linear motor or a piezoelectric motor.

[0013] Furthermore, the second vibration component is an LRA linear motor or a piezoelectric motor.

[0014] In the second aspect, the utility model provides a touch vibration feedback device, which includes a touch panel, a pressure sensing unit and the above-mentioned vibration module, wherein the vibration module is fixed to the touch panel, the pressure sensing unit is used to sense the pressure of the touch panel and transmit the generated pressure signal to the driving unit, and the driving unit triggers the movement of the vibration unit by the pressure sensing signal to drive the touch panel to vibrate.

[0015] In a third aspect, the utility model provides an electronic device, wherein the electronic device comprises the above-mentioned touch vibration feedback device.

[0016] Compared with the prior art, the utility model adopts the idea of ​​time-sharing multiplexing, and controls different vibration components to move in opposite directions through the drive unit alternately outputting different signals to achieve the vibration effect; under the condition of limited input voltage, the vibration amount can be increased, reducing the requirements for processing chips and driving power consumption, thereby reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a vibration module of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the vibration module of the utility model in an application scenario. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiment is a sub-embodiment of a unit of the utility model, rather than an embodiment of the whole unit. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "center", etc., are only used to refer to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.

[0022] See also Figures 1 to 2 , Figure 1 The system structure of an embodiment of the vibration module of the utility model is shown. Figure 1 As shown, the vibration module of the embodiment shown in the utility model includes a vibration unit 10 and a driving unit 20, the vibration unit 10 includes a first vibration component 11 and a second vibration component 12, the first vibration component 11 can move along a first direction, and the second vibration component 12 can move along a second direction, and the first direction is opposite to the second direction; the driving unit 20 includes two output ends, and the driving unit outputs a first signal and a second signal alternately through the two output ends in sequence; the first signal and the second signal respectively drive the first vibration component 11 and the second vibration component 12, so that the first vibration component 11 and the second vibration component 12 are forced to move alternately in opposite directions.

[0023] In this embodiment, the driving unit 20 is electrically connected to the vibration unit 10, wherein the driving unit 20 includes an H-bridge control circuit, the H-bridge control circuit is connected to two output terminals, the first output terminal P is connected to the first vibration component 11 and then grounded, the second output terminal N is connected to the second vibration component 12 and then grounded, and when powered on, the driving unit 20 will periodically and alternately output a first signal from the first output terminal and a second signal from the second output terminal, the first signal can drive the first vibration component 11 to move in a first direction, and the second signal can drive the second vibration component 12 to move in the opposite direction, the first vibration component 11 and the second vibration component 12 can be directly connected, or fixed on an external device or apparatus at the same time. Specifically, the built-in circuit of the driving unit 20 can periodically output current from the first output terminal and the second output terminal alternately in sequence. When the current flows out through the first output terminal and is input into the first vibration component 11 to control the first vibration component 11 to move to the maximum distance in the first direction, the current is output from the second output terminal to control the second vibration component 12 to move to the maximum distance in the opposite direction. Repeating the above process can realize the alternating reverse movement of the first vibration component 11 and the second vibration component 12. It can be understood that since the movement directions of the first vibration component 11 and the second vibration component 12 are opposite and the movement periods are different, the overall movement process can be regarded as a periodic reciprocating motion along the first direction. When the first vibration component 11 and the second vibration component 12 are fixed to an external device or component at the same time, the external device or equipment can generate simple harmonic vibration.

[0024] The vibration module of this embodiment adopts the concept of time-sharing multiplexing, and controls different vibration components to move in opposite directions by periodically outputting different signals through the driving unit to achieve the vibration effect; when the input voltage is limited, the vibration amount can be increased, reducing the requirements for the processing chip and the driving power consumption, thereby reducing the cost of use.

[0025] In an exemplary embodiment, the first vibration component 11 and the second vibration component 12 are symmetrically arranged. The first vibration component 11 and the second vibration component 12 both include a moving iron 111, a coil 112 and a stator core 113. The moving iron 111 is adjacent to the stator core 113. The coil 112 is wound around the stator core 113. The coil 112 is used to generate a magnetic field to attract the moving iron 111 to move linearly in the direction of the stator core 113.

[0026] In some other embodiments, the first vibration component 11 and the second vibration component 12 may also be LRA linear motors or piezoelectric motors, or other vibration devices that can distinguish the vibration direction. LRA linear motors and piezoelectric motors are both existing technologies and will not be elaborated here.

[0027] In an exemplary embodiment, the stator core 113 and the moving iron 111 are made of soft magnetic materials, including but not limited to iron-silicon alloys (silicon steel sheets), iron-nickel alloys and iron-aluminum alloys, etc. Soft magnets have high magnetic permeability and better magnetic conductivity. Optionally, the stator core 113 and the moving iron 111 can also be made of permanent magnet materials, including but not limited to rare earth permanent magnets (such as neodymium iron boron and samarium cobalt), aluminum nickel cobalt and ferrite, etc. Permanent magnets have a long service life and low maintenance costs.

[0028] In an exemplary embodiment, if Figure 2 As shown, the stator core 113 includes a support portion 1132 and a protrusion 1131 . The protrusion 1131 is disposed adjacent to the moving iron 111 . The coil 112 is wound around the protrusion 1131 . The support portion 1132 is used for fixing.

[0029] There can be one or more protrusions 1131, and the protrusions 1131 are magnetic media with a coil 112 wound thereon for generating a magnetic field to attract the moving iron 111, and the support portion 1132 is used to be fixed on an external base; in a certain usage scenario, for example: the vibration module can be installed on a touch device, the mover can be installed on a device such as a touch pad 30 or a touch screen to drive the touch pad 30 or the touch screen to vibrate, and the support portion 1132 can be fixed on the housing of the touch device.

[0030] like Figure 2 As shown, the utility model also provides a touch vibration feedback device, which includes not only the above-mentioned vibration module, but also a touch panel 30, an elastic pad 40 and a pressure sensing unit 50. The pressure sensing unit 50 is used to sense the pressure of the touch panel 30 and transmit the pressure sensing signal to the vibration module, and the vibration module drives the touch panel 30 to vibrate. Specifically, the vibration module on the touch vibration feedback device is fixed to the touch panel 30 by the elastic pad 40. When the pressure sensing unit 50 is subjected to pressure, it generates a pressure sensing signal and outputs it to the driving unit 20. The driving unit 20 generates a control signal by the pressure sensing signal to control the vibration module to periodically reciprocate, thereby further driving the touch panel 30 to vibrate.

[0031] The utility model also provides an electronic device, which includes the above-mentioned touch vibration feedback device, and the electronic device includes but is not limited to touch devices such as touch display screens, tablet computers, and computers. For example, the touch vibration feedback device is installed on the touch display screen, and when the user operates the touch display screen through the touch pad of the touch vibration feedback device, the corresponding pressure vibration feedback is performed on the corresponding touch operation through the operating system pre-installed on the touch display screen.

[0032] The utility model adopts the idea of ​​time-sharing multiplexing, and controls different vibration components to move in opposite directions by alternately outputting different signals through a driving unit to achieve a vibration effect; the vibration module can achieve a higher vibration frequency and is not dependent on the strength of the input current or voltage; that is, when the input voltage is limited, the vibration amount is increased, thereby reducing the cost of use; further, the vibration module can be installed on a touch device to achieve touch vibration feedback.

[0033] It is understandable that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present invention are within the scope of protection of the present invention.

Claims

1. A vibration module, characterized in that: include: A vibration unit, comprising a first vibration component and a second vibration component, wherein the first vibration component can move along a first direction, and the second vibration component can move along a second direction, wherein the first direction is opposite to the second direction; as well as A driving unit comprises two output ends, and the driving unit outputs a first signal and a second signal alternately through the two output ends; the first signal and the second signal are respectively used to drive the first vibration component and the second vibration component to make the first vibration component and the second vibration component alternately forced to move in opposite directions.

2. The vibration module according to claim 1, characterized in that: The driving unit includes an H-bridge control circuit, and the H-bridge control circuit periodically and alternately outputs the first signal and the second signal.

3. The vibration module according to claim 1, characterized in that: The first vibration component and the second vibration component are symmetrically arranged, and both the first vibration component and the second vibration component include a moving iron, a coil and a stator core. The moving iron is arranged adjacent to the stator core, and the coil is wound on the stator core. The coil is used to generate a magnetic field to attract the moving iron to move a preset distance toward the stator core.

4. The vibration module according to claim 3, characterized in that: The stator core includes a supporting portion and a protruding portion, wherein the protruding portion is disposed adjacent to the moving iron, the coil is wound around the protruding portion, and the supporting portion is used for fixing.

5. The vibration module according to claim 3, characterized in that: The moving iron is a permanent magnet or a soft magnet.

6. The vibration module according to claim 3 or 5, characterized in that: The stator core is a permanent magnet or a soft magnet.

7. The vibration module according to claim 1, characterized in that: The first vibration component is an LRA linear motor or a piezoelectric motor.

8. The vibration module according to claim 1 or 7, characterized in that: The second vibration component is an LRA linear motor or a piezoelectric motor.

9. A touch vibration feedback device, characterized in that: The touch vibration feedback device includes a touch panel, a pressure sensing unit and a vibration module according to any one of claims 1 to 8, wherein the vibration module is fixed to the touch panel, the pressure sensing unit is used to sense the pressure of the touch panel and transmit the generated pressure signal to the driving unit, and the driving unit triggers the movement of the vibration unit by the pressure sensing signal to drive the touch panel to vibrate.

10. An electronic device, characterized in that: The electronic device comprises the touch vibration feedback device according to claim 9.

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