Force feedback device and electronic device

Abstract

The application discloses a force feedback device and electronic equipment, the force feedback device comprises a shell, an operating part and a linear driving assembly, the operating part is slidably arranged in the shell along the moving direction of the operating part; the linear driving assembly comprises a stator fixedly arranged in the shell and a mover slidably arranged in the shell along the moving direction of the operating part, and the mover is connected with the operating part. One of the mover and the stator is arranged as an ultrathin flat coil, and the other is arranged as a magnet structure, the flat coil is in the magnetic field generated by the magnet structure, and the electromagnetic force generated between the flat coil and the magnet structure is fed back to the user's finger, so that the overall structure of the linear driving assembly can realize the ultrathin design of flattening and miniaturization under the premise of meeting the force feedback effect, thereby solving the problems that the existing force feedback device occupies a large space and is difficult to be miniaturized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of game devices, in particular to a force feedback device and an electronic device. BACKGROUND

[0002] At present, in order to improve the user experience, a force feedback device is designed on a game control handle device (including a traditional game handle and a new type of handheld handle of AR / VR, etc.) to increase a plurality of force feedback modes, so as to realize the interaction between the game content and the player and simulate the real force feedback effect.

[0003] However, the existing force feedback scheme uses a traditional compression spring and a common rotor motor to drive a gear box to realize the rotation shaft type force feedback effect, and the single body occupies a large space and has a complex module structure, which is difficult to miniaturize. SUMMARY

[0004] The main purpose of the present application is to provide a force feedback device and an electronic device, which aims to solve the problem that the existing force feedback device occupies a large space and is difficult to miniaturize.

[0005] To achieve the above purpose, the present application provides a force feedback device, wherein the force feedback device comprises:

[0006] a housing;

[0007] an operation part movably arranged in the housing;

[0008] a fixed part; and

[0009] a linear drive assembly comprising a stator fixedly arranged in the housing and a mover slidingly arranged in the housing along the moving direction of the operation part, the mover being fixed to the fixed part, and the fixed part being connected to the operation part, wherein one of the stator and the mover is a flat coil, and the other is a magnet structure, the magnet structure forms a magnetic field, and the flat coil is located in the magnetic field.

[0010] Optionally, the magnet structure comprises a magnet group, the magnet group comprises two magnets, a magnetic gap is formed between the two magnets, and the flat coil is arranged in the magnetic gap.

[0011] The stator comprises two magnets, and the mover comprises the flat coil.

[0012] Optionally, the magnet group is arranged as at least two groups, two groups of the magnet group are arranged in the moving direction of the operation part, and the polarities of the magnets on the same side of the magnetic gap of the two groups of the magnet group are reversely arranged, so that the magnetic field directions of the magnetic gap at the positions corresponding to the two groups of the magnet group are opposite.

[0013] The two opposite edges of the flat coil correspond to the magnetic gaps of the two groups of magnet groups.

[0014] Optionally, the shell comprises a plurality of side portions, the plurality of side portions enclosing a mounting channel extending along the moving direction of the operation portion, the plurality of side portions comprising a first side portion and a second side portion arranged oppositely, the operation portion being slidably arranged in the mounting channel along the moving direction of the operation portion.

[0015] The magnet structure and the flat coil are arranged in layers between the first side portion and the second side portion.

[0016] Optionally, the force feedback device further comprises a mounting frame slidably arranged in the mounting channel along the moving direction of the operation portion, the mounting frame having a first end exposed outside the mounting channel and a second end located in the mounting channel, the first end being connected with the operation portion, and the second end being formed with a mounting groove for accommodating the mover.

[0017] Optionally, the mounting groove is an annular groove, and the flat coil is clamped in the annular groove.

[0018] Optionally, the shell comprises a magnetic yoke arranged correspondingly to the magnet structure.

[0019] Optionally, the force feedback device further comprises a controller, a displacement sensor and a power supply module, the displacement sensor being configured to detect a displacement signal of the operation portion, and the controller being electrically connected with the displacement sensor and the power supply module, so as to control the current size and the current direction of the power supply module according to the displacement signal.

[0020] Optionally, the force feedback device further comprises a reset member configured to jointly act on the operation portion with the mover when the operation portion is active.

[0021] The present application also provides an electronic device comprising the force feedback device.

[0022] a shell;

[0023] an operation portion slidably arranged in the shell along a moving direction of the operation portion;

[0024] a resilient member having one end connected with the operation portion and the other end connected with the shell; and

[0025] A linear drive assembly includes a stator fixedly disposed within the housing and a mover slidably disposed within the housing along the moving direction of the operating part. The mover is connected to the operating part. One of the stator and the mover is a flat coil, and the other is a magnetic structure. The magnetic structure forms a magnetic field, and the flat coil is located in the magnetic field.

[0026] Optionally, the electronic device includes a game control device or a mobile terminal device.

[0027] In the technical solution provided by this invention, when a user's finger needs to press the operating part, the elastic force generated by the elastic element is fed back to the user's finger, and a reset force is provided for the operating part to reset. During the operation of pressing the operating part, the feedback force of the elastic element is related to the deformation of the elastic element. When it is necessary to simulate a virtual feedback force that is not directly related to the movement stroke of the operating part, one of the mover and the stator is set as a flat coil, and the other is set as a magnetic structure. The flat coil is in the magnetic field generated by the magnetic structure. When the flat coil is energized, an electromagnetic force is generated between the flat coil and the magnetic structure, which is fed back to the mover. The resultant force formed by the flat coil and the elastic force generated by the elastic element is fed back to the user's finger. The flat coil is flat. The overall structure of the linear drive component can achieve a flat and miniaturized ultra-thin design while satisfying the force feedback effect, adapting to the application requirements of different types of handles, so as to solve the problem that the existing force feedback device occupies a large space and is difficult to miniaturize. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 This is an exploded view of the components of an embodiment of the force feedback device provided by the present invention;

[0030] Figure 2 for Figure 1 A plan view of the force feedback device in the diagram;

[0031] Figure 3 for Figure 2 Schematic diagram of section AA in the middle.

[0032] Explanation of icon numbers:

[0033]

[0034]

[0035] The objectives, functional characteristics and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0037] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, motion condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0038] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the meaning of “and / or” appearing throughout the text includes three parallel solutions. Taking “A and / or B” as an example, it includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0039] At present, in order to improve the user experience, a force feedback device is designed on a game control handle device (including a traditional game handle and an AR / VR new type handheld handle, etc.) to increase a plurality of force feedback modes, so as to realize the interaction between the game content and the player and simulate the real force feedback effect. The existing force feedback scheme uses a traditional compression spring and a common rotor motor to drive a gear box to realize the rotation shaft type force feedback effect. The single occupies a large space, the module structure is complex, and it is difficult to miniaturize.

[0040] In order to solve the above problems, the present application provides a force feedback device 100, Figures 1 to 3 The specific embodiments of the force feedback device 100 provided by the present application are provided.

[0041] Please refer to Figures 1 to 2 The force feedback device 100 comprises a housing 1, an operating part 2 movably arranged in the housing 1, a fixed part (not shown), and a linear driving assembly 4 comprising a stator 41 fixedly arranged in the housing 1 and a mover 42 slidably arranged in the housing 1 along the moving direction of the operating part, the mover 42 being fixed to the fixed part, and the fixed part being connected to the operating part 2, wherein one of the stator 41 and the mover 42 is a flat coil 421, and the other is a magnet structure, the magnet structure forming a magnetic field, and the flat coil 421 being in the magnetic field.

[0042] In the technical solution provided by the present application, when a user's finger needs to press the operating part, and when the virtual feedback force needs to be simulated without a direct linear relationship with the operating stroke, one of the mover 42 and the stator 41 is set as a flat coil 421, and the other is set as a magnet structure, the flat coil 421 being in the magnetic field generated by the magnet structure, the flat coil 421 generating an interaction Ampere force with the magnet structure in the energized state, thereby feeding back to the mover 42, and the flat coil 421 being flat, the overall structure of the linear driving assembly 4 being able to realize flat and small-size ultra-thin design under the premise of meeting the force feedback effect, and being suitable for application requirements of different types of handles, so as to solve the problem of large space occupation of the existing force feedback device 100 and difficulty in miniaturization.

[0043] Further, the force feedback device further comprises a reset member for jointly acting on the operating part with the mover when the operating part moves, the reset member can be an elastic member 3, the elastic member 3 generating an elastic force feedback to the user's finger, and providing a reset force for resetting the operating part 2, the feedback force of the elastic member 3 being related to the deformation amount of the elastic member 3 during the operation of pressing the operating part 2, at this time, the resultant force formed by the elastic force generated by the elastic member 3 and the Ampere force is fed back to the user's finger.

[0044] Specifically, please refer to Figure 3In the embodiment, the magnet structure comprises a magnet group 41a, the magnet group 41a comprises two magnets, a magnetic gap is formed between the two magnets, the flat coil 421 is arranged in the magnetic gap, the stator 41 comprises two magnets 411, the mover 42 comprises the flat coil 421. When the flat coil 421 is passed through alternating current, a part of the flat coil 421 in the magnetic gap will generate Ampere force, which can be judged according to the left-hand rule: extend the left hand, make the thumb perpendicular to the other four fingers and in a plane, let the magnetic induction lines flow from the palm, the four fingers point to the current direction, and the thumb points to the Ampere force direction (i.e. the force direction of the conductor). Thus, the direction of the force acting on the flat coil 421 in the magnetic field can be obtained. When it is needed to increase the resistance of the feedback force, the current direction in the flat coil 421 can be set to the direction in which the Ampere force generated by the flat coil 421 is towards the user's fingers. When it is needed to have a relief force, the current direction in the flat coil 421 can be set to the direction in which the Ampere force generated by the flat coil 421 is away from the user's fingers.

[0045] It should be noted that, because the Ampere force is the force generated by the interaction between the magnet and the current-carrying wire, it can be understood that, please refer to Figure 3 , the stator 41 can comprise two magnets 411, the mover 42 comprises the flat coil 421, when the two magnets 411 are fixed to the shell 1, the flat coil 421 is driven to move by the Ampere force. Of course, when the flat coil 421 is fixed to the shell 1, the Ampere force acts on the two magnets 411, the flat coil 421 can be regarded as the stator 41, and the two magnets 411 can be understood as the mover 42.

[0046] Further, in order to make the feedback force have a larger interval value, and fully meet the experience of the user, in the embodiment, the magnet group 41a is provided as at least two groups, the two groups of magnet groups 41a are arranged in the moving direction of the operation part, and the polarities of the magnets on the same side of the magnetic gap of the two groups of magnet groups 41a are reversely arranged, so that the magnetic field directions of the magnetic gap corresponding to the two groups of magnet groups 41a are opposite, and the two opposite edges of the flat coil 421 in the moving direction of the operation part correspond to the magnetic gap corresponding to the two groups of magnet groups 41a. In this way, the two opposite edges of the flat coil 421 in the moving direction of the operation part can simultaneously sense the same direction of the Ampere force, so that the theoretical value of the feedback force is doubled. Of course, in order to adjust the size of the feedback force, in addition to arranging more magnet groups 41a and flat coils 421, the current value of the flat coil 421 can also be changed. The greater the current value, the greater the Ampere force, and vice versa.

[0047] Specifically, in order to match the flat and ultra-thin design of the flat coil 421, please refer to Figure 3 In the embodiment, the shell 1 includes a plurality of side portions, and the plurality of side portions enclose a mounting channel arranged in the moving direction of the operation part. Preferably, the shape of the cross section of the mounting channel is rectangular, and the plurality of side portions include oppositely arranged first and second side portions 11 and 12. The operation part 2 is slidably arranged in the mounting channel in the moving direction of the operation part. The magnet structure and the flat coil 421 are arranged in a stack between the first and second side portions 11 and 12, so that the force feedback device 100 is compact in the thickness direction, and is suitable for the needs of different types of handle triggers.

[0048] Specifically, in the embodiment, the force feedback device 100 further includes a mounting bracket slidably arranged in the mounting channel in the moving direction of the operation part, so as to have a first end exposed outside the mounting channel and a second end located in the mounting channel. The first end is connected with the operation part 2. By arranging the mounting bracket, the operation part 2 can have a larger travel in the moving direction of the operation part, so that the user has a stronger operation experience. Further, the second end is formed with a mounting groove 51 for accommodating the flat coil 421. When the flat coil 421 is driven by the Ampere force, the flat coil 421 applies a force to the side wall of the mounting groove 51, so as to realize the magnetic force driving of the operation part 2.

[0049] Further, in order to realize the thinnest possible, in the embodiment, the mounting groove 51 is an annular groove, the flat coil 421 is clamped in the annular groove, the peripheral side of the flat coil 421 is clamped by the peripheral wall of the annular groove, and the annular groove can be provided with the same height as the flat coil 421 or smaller in size to realize the flattening while ensuring the strength of the mounting frame.

[0050] Since the magnet structure has a magnetic field, in order to enable the magnetic field generated by the magnet structure to act on the flat coil 421 with maximum energy efficiency, in the embodiment, the shell 1 comprises a magnetic yoke provided corresponding to the magnet structure, and the magnetic yoke has high magnetic permeability and can constrain the magnetic field so that the magnetic field of the magnet structure can have greater energy efficiency.

[0051] In the embodiment, the force feedback device 100 further comprises a controller, a displacement sensor and a power supply module, the power supply module is used to provide the flat coil 421 with currents of different sizes and different current directions, the displacement sensor is used to detect the displacement signal of the operating part 2, and the controller is electrically connected with the displacement sensor and the power supply module to control the current size and current direction of the power supply module according to the displacement signal.

[0052] In actual application, when the user uses the game, pulls the trigger and presses the operating part 2 to perform game operation, for example, assuming that it is a racing game operation, when the car in the game is in a stationary state, the information of the game does not generate current, and after the user presses the operating part 2, the feedback force felt by the user is the reset elastic force generated by the elastic member 3; when the car is started, the resistance in the game scene is small at this time, the power supply module provides negative current, the negative current passes through the flat coil 421, and the direction of the ampere force generated between the flat coil 421 and the magnet structure is opposite to the direction of the repulsive force, so the feedback force felt by the user is the resultant force of the reset elastic force minus the ampere force, that is, the game feedback force felt by the user is also small, and it is relatively easy to start; similarly, when the car collides with an obstacle, the power supply module provides positive current at this time, the direction of the ampere force is the same as that of the reset elastic force, so the game feedback force felt by the user is the sum of the reset elastic force and the ampere force, and the feedback force corresponding to the game content is large at this time, and it is difficult to start.

[0053] The application also provides an electronic device, which can be a gamepad, a game machine, a game operation device or a mobile terminal device, etc., and the electronic device comprises the force feedback device 100, and the specific structure of the force feedback device 100 is referred to the above embodiments. Since the electronic device adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by all the technical solutions of the above embodiments, and details are not described herein.

[0054] The above merely provides the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structure variations made according to the present application, or direct / indirect application in other related technical fields, shall fall within the patent protection scope of the present application.

Claims

1. A force feedback device, characterized by The force feedback device comprises: a housing comprising a plurality of side portions; an operation portion movably arranged in the housing; the plurality of side portions form an installation channel extending along a moving direction of the operation portion; a fixing portion; a linear driving assembly comprising a stator fixedly arranged in the housing and a mover movably arranged in the housing along the moving direction of the operation portion, the mover being fixed to the fixing portion, the fixing portion being connected to the operation portion; the mover is a flat coil, the stator is a magnet structure, the magnet structure forms a magnetic field, and the flat coil is located in the magnetic field; and a mounting rack slidably arranged in the installation channel along the moving direction of the operation portion to have a first end exposed outside the installation channel and a second end located in the installation channel; the first end is connected to the operation portion, the second end forms an installation slot for accommodating the mover; when the flat coil is driven by an ampere force, the flat coil is used to exert a force on the side wall of the installation slot; the height of the flat coil is greater than the height of the installation slot.

2. The force feedback device of claim 1, wherein, The magnet structure comprises a magnet group, the magnet group comprises two magnets, a magnetic gap is formed between the two magnets, and the flat coil is arranged in the magnetic gap.

3. The force feedback device of claim 2, wherein, The magnet group is arranged as at least two groups, two groups of the magnet group are arranged in the moving direction, and the magnetization directions of the magnets on the same side of the two groups of the magnet group are reversely arranged to make the magnetic field directions of the magnetic gap corresponding to the two groups of the magnet group opposite. The flat coil is arranged at two opposite edges in the moving direction of the operation portion.

4. The force feedback device of claim 1, wherein, The plurality of side portions comprise oppositely arranged first and second side portions, and the operation portion is slidably arranged in the installation channel along the moving direction of the operation portion. The magnet structure and the flat coil are arranged in layers between the first and second side portions.

5. The force feedback device of claim 4, wherein, The installation slot is an annular slot, and the flat coil is clamped in the annular slot.

6. The force feedback device of claim 1, wherein, The housing comprises a magnetic yoke corresponding to the magnet structure.

7. The force feedback device of claim 1, wherein, The force feedback device further comprises a controller, a displacement sensor and a power supply module, the displacement sensor is used to detect a displacement signal of the operation portion, the controller is electrically connected with the displacement sensor and the power supply module to control the current size and current direction of the power supply module according to the displacement signal.

8. The force feedback device of claim 1, wherein, The force feedback device further comprises a reset member for jointly acting on the operation portion with the mover when the operation portion moves.

9. An electronic device, comprising: The force feedback device comprises the force feedback device according to any one of claims 1 to 8.

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