Vibration device and electronic device

Abstract

This invention discloses a vibration device and an electronic device. The vibration device includes a housing, a vibration assembly, and a coil assembly. The vibration assembly is vibratoryly disposed within the housing along a first direction. The vibration assembly includes a magnet structure and a first counterweight. The magnet structure includes two magnets arranged opposite each other along the first direction. The first counterweight is disposed between the two magnets. The coil assembly is fixed within the housing and includes a coil surrounding the first counterweight. By using two magnets arranged opposite each other, the motor drive constant BL of the vibration device is maximized. Furthermore, the first counterweight increases the mass of the vibration assembly, enabling the vibration device to provide a greater vibration sensation under the same stroke. Moreover, the first counterweight being located between the two magnets fully utilizes the internal space of the magnet structure, preventing an increase in the volume of the vibration device. This provides a vibration device that enhances vibration sensation without increasing the driving force or the volume of the vibration device.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration devices, and in particular to a vibration device and an electronic device. Background Art

[0002] In the controllers adapted for game consoles / VR and other devices, vibration devices are commonly used to provide vibration feedback to enhance the gaming experience. Currently, linear vibration motors have become the main components of such products. Usually, the magnetic circuit unit of a linear motor is composed of a magnet and a block of magnetic conductive parts, which limits the weight of the vibration component and makes it impossible to further enhance its vibration. In order to increase the vibration, existing vibration devices generally increase the driving force or increase the volume of the vibration component. Summary of the invention

[0003] The main purpose of the present invention is to provide a vibration device and an electronic device, aiming to improve the vibration feeling without increasing the driving force and the volume of the vibration device.

[0004] To achieve the above object, the present invention provides a vibration device, wherein the vibration device comprises:

[0005] case;

[0006] a vibration component, which is disposed in the housing and can vibrate along a first direction, the vibration component comprising a magnet structure and a first counterweight, the magnet structure comprising two magnets disposed opposite to each other along the first direction, the first counterweight being disposed between the two magnets; and,

[0007] A coil assembly is fixed in the shell, and the coil assembly includes a coil arranged around the periphery of the first counterweight. When turned on, the coil interacts with the magnetic field formed by the magnet structure to make the vibration assembly vibrate in the first direction.

[0008] Optionally, the vibration assembly further comprises a magnetic conductive portion disposed in the housing, and the magnetic conductive portion is formed with a mounting channel;

[0009] The magnet structure is arranged in the installation channel, the two magnets both have a magnetization direction along the first direction, and the magnetization directions of the two magnets are arranged in opposite directions;

[0010] The coil is arranged in a gap between the magnetic conductive portion and the magnetic structure.

[0011] Optionally, the vibration assembly further includes a second counterweight disposed on the magnetic conductive portion.

[0012] Optionally, an inner wall surface of the installation channel is provided with an installation groove, and the second counterweight is arranged in the installation groove.

[0013] Optionally, the second counterweight comprises two mass blocks, and the two mass blocks are respectively arranged at two ends of the magnetic conductive portion in the first direction.

[0014] Optionally, the vibration device further comprises a conductor fixedly connected to the shell, and at least a portion of the conductor is in the magnetic field.

[0015] Optionally, the conductor is arranged in a ring shape, and the conductor ring is arranged on the periphery of the coil.

[0016] Optionally, the vibration assembly further includes a magnetic conductor, and the magnetic conductor is arranged between the two magnets.

[0017] Optionally, the magnetic conductor is arranged in a ring shape, and the magnetic conductor is arranged around the periphery of the first counterweight.

[0018] The present invention further provides an electronic device, the electronic device comprising a vibration device, the vibration device comprising:

[0019] case;

[0020] a vibration component, which is disposed in the housing and can vibrate along a first direction, the vibration component comprising a magnet structure and a first counterweight, the magnet structure comprising two magnets disposed opposite to each other along the first direction, the first counterweight being disposed between the two magnets; and,

[0021] A coil assembly is fixed in the shell, and the coil assembly includes a coil arranged around the periphery of the first counterweight. When turned on, the coil interacts with the magnetic field formed by the magnet structure to make the vibration assembly vibrate in the first direction.

[0022] In the technical solution provided by the present invention, two magnets in the magnet structure are arranged relatively to each other in a first direction, and the vibration component also includes a first counterweight arranged between the two magnets. By adopting the two magnets arranged relatively to each other, the motor drive constant BL value of the vibration device is maximized, and the product Q value is reduced to have a better wide-band response. The first counterweight increases the mass of the vibration component, so that the vibration device can provide a greater vibration sensation under the same motion stroke. The first counterweight is located between the two magnets, making full use of the internal space of the magnet structure, so that the volume of the vibration device will not increase, so as to provide a vibration device that improves the vibration sensation without increasing the driving force and increasing the volume of the vibration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A cross-sectional schematic diagram of an embodiment of a vibration device provided by the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the magnetization direction of the magnetic structure in FIG.

[0026] Figure 3 for Figure 1 Explosion diagram of the vibration device in FIG.

[0027] Figure 4 for Figure 1 A schematic diagram of the structure of the vibration component and the coil component;

[0028] Figure 5 A partial structural schematic diagram of another embodiment of the vibration device provided by the present invention.

[0029] Description of Figure Numbers:

[0030] Label name Label name 100 Vibration device 25 Magnetic Conductor 1 case 3 Coil assembly 2 Vibration components 31 Coil 21 Magnet structure 4 conductor 211 magnet 5 Elastic support 22 First counterweight 51 shrapnel 23 Magnetic Conductivity 511 First connection section 23a Mounting slot 512 Inclined section 24 Second counterweight 513 Second connecting section 241 Mass 6 Electrical connector

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Electronic devices can be, but are not limited to, remote control devices (such as game controllers), mobile terminals (such as mobile phones, smart phones, bracelets, smart watches, and wearable devices), etc. In the handles adapted for game consoles / VR and other devices, vibration devices are generally used to provide vibration feedback to enhance the gaming experience. At present, linear vibration motors have become the main components of such products. Usually, the magnetic circuit unit of a linear motor is composed of a magnet and a block of magnetic conductive parts, which limits the weight of the vibration component and makes it impossible to further enhance its vibration. In order to increase the vibration, existing vibration devices generally increase the driving force or increase the volume of the vibration part.

[0036] In order to solve the above problems, the present invention provides a vibration device 100, Figures 1 to 5 This is a specific embodiment of the vibration device provided by the present invention.

[0037] See also Figures 1 to 3 The vibration device 100 includes a shell 1, a vibration component 2 and a coil component 3. The vibration component 2 is vibrated in the shell 1 along a first direction. The vibration component 2 includes a magnet structure 21 and a first counterweight 22. The magnet structure 21 includes two magnets 211 arranged opposite to each other along the first direction. The first counterweight 22 is arranged between the two magnets 211. The coil component 3 is fixed in the shell 1. The coil component 3 includes a coil 31 arranged around the periphery of the first counterweight 22. When turned on, the coil 31 interacts with the magnetic field formed by the magnet structure 21 to make the vibration component 2 vibrate in the first direction.

[0038] In the technical solution provided by the present invention, two magnets 211 in the magnet structure 21 are arranged relatively to each other in a first direction, and the vibration component 2 also includes a first counterweight 22 arranged between the two magnets 211. By adopting the two magnets 211 arranged relatively to each other, the motor drive constant BL value of the vibration device 100 is maximized, and the product Q value is reduced to have a better wide-band response. In addition, the first counterweight 22 increases the mass of the vibration component 2, so that the vibration device 100 can provide a greater vibration sensation under the same motion stroke. In addition, the first counterweight 22 is located between the two magnets 211, making full use of the internal space of the magnet structure 21, so that the volume of the vibration device 100 will not increase, so as to provide a vibration device 100 that improves the vibration sensation without increasing the driving force and increasing the volume of the vibration device 100.

[0039] Specifically, in this embodiment, the vibration component 2 also includes a magnetic conductive part 23 disposed in the shell 1. As a part of the vibration component 2, the magnetic conductive part 23 has a certain weight, so that the mass of the vibration component 2 can be further increased. Another function of the magnetic conductive part 23 is to provide installation of the magnet structure 21 and the first counterweight 22. The installation includes fixed installation or elastic movable installation. For details, see the subsequent part. For this reason, the specific structure or construction of the magnetic conductive part 23 is not limited. For example, the magnetic conductive part 23 can be an integral part or a split part, a frame or other structures. Please refer to Figure 1 and Figure 2 In this embodiment, the magnetic conductive portion 23 is formed with an installation channel, the magnetic structure 21 is arranged in the installation channel, the two magnets 211 both have a magnetization direction along the first direction, and the magnetization directions of the two magnets 211 are arranged in opposite directions, and the coil 31 is arranged in the gap between the magnetic conductive portion 23 and the magnetic structure 21. Because the polarities of the ends of the two magnets 211 that are close to each other are the same, the direction of the magnetic field at the gap between the two magnets 211 can pass through the coil 31 in a direction perpendicular to the coil 31. The material of the magnetic conductive portion 23 is preferably SUS430 material or SPCC material. The magnetic conductive portion 23 is used to constrain the magnetic lines of force in the vibration component 2, thereby reducing the side suction force of the shell on the vibration component 2, reducing the difficulty of assembly and the risk of adverse impact caused by side suction.

[0040] According to Ampere's law, when the coil 31 is supplied with alternating current, a part of the coil 31 in the magnetic gap will generate Ampere force, which can be specifically judged according to the left-hand rule: stretch out your left hand, make the thumb perpendicular to the other four fingers and in the same plane, let the magnetic flux lines flow in from the palm, the four fingers point to the direction of the current, and the thumb points to the direction of the Ampere force (i.e. the force direction of the conductor 4). It can be concluded that in the magnetic field, the coil 31 is acted upon by the Ampere force in the first direction, which will react on the magnetic structure 21, thereby causing the vibration component 2 to swing in the first direction.

[0041] Furthermore, since the distance between the two magnets 211 is limited, the size of the first counterweight 22 is limited. In order to make the vibration assembly 2 have a greater vibration sense, please refer to Figure 5 In another embodiment, the vibration component 2 further includes a second counterweight 24 disposed on the magnetic conductive portion 23 , and the overall weight of the vibration component 2 is further increased by increasing the mass on the magnetic conductive portion 23 .

[0042] For further information, see Figure 5 In this embodiment, the inner wall surface of the installation channel is penetrated with an installation groove 23a, and the second counterweight 24 is arranged in the installation groove 23a. In this way, the second counterweight 24 is arranged in the installation groove 23a, which does not occupy the outer dimension space of the vibration component 2, and is conducive to the need of lightweight design.

[0043] Further, in this embodiment, the second counterweight 24 includes two mass blocks 241, and the two mass blocks 241 are respectively arranged at two ends of the magnetic conductive part 23 in the first direction. By setting the second counterweight 24 separately, the design is more flexible, and the two mass blocks 241 are respectively arranged at two ends of the magnetic conductive part 23 in the first direction, which does not affect the vibration stability of the vibration component 2, and also avoids affecting the magnetic conductive effect of the magnetic conductive part 23 when being arranged at the side.

[0044] In order to suppress unnecessary vibration modes generated during the vibration of the vibration component 2, specifically, please refer to Figure 1 and Figure 4In this embodiment, the vibration device 100 also includes a conductor 4 fixedly connected to the shell 1, and at least part of the conductor 4 is in the magnetic field. When the vibration component 2 vibrates, the conductor 4 moves relative to the magnetic field to cut the magnetic flux lines, thereby generating a certain induced current, so that a certain reverse Ampere force is generated between the conductor 4 and the two magnets 211 to provide damping and ensure wide-band response, so that when a larger motor constant is matched, it can be ensured that under the same driving voltage, when the driving frequency transitions from the resonant frequency to the high frequency, the vibration sense will not be greatly attenuated. The conductor 4 is a high conductivity material. Preferably, the material of the conductor 4 is copper. It can be understood that the system damping can be adjusted by adjusting the height of the conductor 4 and the thickness of the side wall to reduce the Q value of the motor. The reduction of the motor Q value can effectively broaden its vibration frequency band, so that it still has a strong vibration sense when driven away from the resonant frequency.

[0045] Specifically, in order to reduce the difficulty of assembling the conductor 4 and the coil 31, please refer to Figure 3 In this embodiment, the conductor 4 is arranged in a ring shape, and the conductor 4 is arranged around the periphery of the coil 31.

[0046] Furthermore, in order to enhance the magnetic field strength of the magnetic gap, the vibration assembly 2 further includes a magnetizer 25 disposed between the two magnets 211 . Preferably, the magnetizer 25 includes an SPCC material.

[0047] Specifically, in this embodiment, the magnetizer 25 is arranged in a ring shape, and the magnetizer 25 is arranged around the periphery of the first counterweight 22. The magnetizer 25 adopts a ring structure, so that the first counterweight 22 is nested therein, and the weight of the vibration component 2 is increased without affecting the driving constant BL, thereby improving the vibration sense of the vibration device 100.

[0048] The vibration of the vibration component 2 can be achieved by setting an elastic member. For details, please refer to Figure 4 In this embodiment, the vibration device 100 further includes an elastic support member 5, which is connected to the shell 1 and the vibration component 2, and together with the vibration component 2 constitutes a vibrator, and can be elastically deformed in the first direction.

[0049] The elastic support member 5 can be a spring, a spring, etc., and this design does not limit this. Specifically, in this embodiment, the elastic support member 5 includes a spring 51, and the spring 51 is arranged between the end of the vibration component 2 in the first direction and the shell 1.

[0050] Specifically, see Figure 4In the present embodiment, the spring piece 51 extends along a second direction orthogonal to the first direction, and is bent to have a first connecting section 511, an inclined section 512, and a second connecting section 513 connected in sequence, the first connecting section 511 is connected to the shell 1, the second connecting section 513 is connected to the vibration component 2, and the inclined section 512 extends obliquely from the shell 1 along the second direction toward the vibration component 2. It can be understood that the vibration mode of the motor can be adjusted by adjusting the length, width, shape and plate thickness of the inclined section 512 of the spring piece 51 and the shape of the cutting notch, and the local stress can be reduced to improve the fatigue life of the product. It should be noted that there is no limit to the number of bending times of the spring piece 51. In theory, the more bending times, the better the elasticity, but it also needs to be considered in terms of its production and manufacturing.

[0051] Furthermore, in this embodiment, two spring pieces 51 are provided, and the two spring pieces 51 are correspondingly connected to the two ends of the vibration component 2 and the housing 1. By symmetrically arranging the two spring pieces 51, the high-order vibration frequency of the vibration device 100 can be effectively increased, and the risk of product noise caused by high-order modes can be reduced.

[0052] Specifically, see Figure 1 In this embodiment, the housing 1 is further provided with an electrical connector 6, which is electrically connected to the coil 31 and connected to an external power source. The electrical connector 6 is an FPCB, i.e., a flexible cable.

[0053] The present invention also provides an electronic device, which may be a game controller, a game console, a game operating device, or a mobile terminal device, etc. The electronic device includes the vibration device 100. The specific structure of the vibration device 100 refers to the above embodiment. Since the electronic device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by all the technical solutions of all the above embodiments, which will not be described one by one here.

[0054] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vibration device, characterized in that: include: case; a vibration component, which is disposed in the housing and can vibrate along a first direction, the vibration component comprising a magnet structure and a first counterweight, the magnet structure comprising two magnets disposed opposite to each other along the first direction, the first counterweight being disposed between the two magnets; and, A coil assembly is fixed in the housing, the coil assembly is arranged around the periphery of the vibration assembly, the winding center axis of the coil assembly extends along the first direction, the coil assembly includes a coil arranged around the periphery of the first counterweight, and when turned on, the coil interacts with the magnetic field formed by the magnet structure to make the vibration assembly vibrate in the first direction; Wherein, the vibration component further includes a magnetizer, which is arranged between the two magnets, the magnetizer is arranged in a ring shape, and the magnetizer ring is arranged on the periphery of the first counterweight.

2. The vibration device according to claim 1, characterized in that The vibration assembly further includes a magnetic conductive portion disposed in the housing, wherein the magnetic conductive portion is formed with a mounting channel; The magnet structure is arranged in the installation channel, the two magnets both have a magnetization direction along the first direction, and the magnetization directions of the two magnets are arranged in opposite directions; The coil is arranged in a gap between the magnetic conductive portion and the magnetic structure.

3. The vibration device according to claim 2, characterized in that The vibration assembly also includes a second counterweight disposed on the magnetic conductive portion.

4. The vibration device according to claim 3, characterized in that An inner wall surface of the installation channel is penetrated with an installation groove, and the second counterweight is arranged in the installation groove.

5. The vibration device according to claim 3, characterized in that The second counterweight comprises two mass blocks, and the two mass blocks are respectively arranged at two ends of the magnetic conductive portion in the first direction.

6. The vibration device according to claim 1, characterized in that The vibration device further comprises a conductor fixedly connected to the shell, and at least a part of the conductor is in the magnetic field.

7. The vibration device according to claim 6, characterized in that The conductor is arranged in a ring shape, and the conductor ring is arranged on the periphery of the coil.

8. An electronic device, characterized in that the electronic device comprises the vibration device according to any one of claims 1 to 7.

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