Force feedback device and electronic equipment

Abstract

The force feedback device of the present invention comprises a shell, a magnetic component, a coil component and an elastic member, and a mounting cavity is provided inside the shell. The magnetic component is arranged in the mounting cavity and connected to the shell, the coil component at least comprises a coil, the coil ring is arranged between the shell and the magnetic component, and at least part of the elastic member is inserted between the shell and the coil; wherein, the magnetic component and the coil component can perform relative reciprocating linear motion along the axial direction of the coil component, and during the relative reciprocating linear motion, the shell and the coil jointly clamp the elastic member and compress the elastic member along the radial direction. According to the force feedback device of the present invention, the radial position of the coil and the shell can be fixed, so as to prevent the radial deviation of the magnetic component and the coil during the relative reciprocating linear motion in the axial direction, avoid the wear of the coil or the magnetic component, and ensure the reliability of the operation of the equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of human-computer interaction, and in particular relates to a force feedback device and an electronic device having the force feedback device. Background Art

[0002] With the development of VR and games, consumers have higher and higher requirements for the real gaming experience. As a tactile interaction medium, the handle has a stronger demand for trigger force feedback.

[0003] Linear motors generally use slide rails for linear motion. However, due to the large size of the slide rails and the high price of miniaturized slide rails, they are not suitable for handle applications. Generally, linear motion is performed by sliding. Due to the tolerance of materials and assembly, there must be gaps in the sliding. During motion, the mover will inevitably have eccentricity problems, resulting in local wear of the sliding part. Severe wear will lead to product failure. Summary of the invention

[0004] The purpose of the present invention is to at least solve the problem of eccentric wear when the mover assembly and the stator assembly are slidingly matched in a straight line direction. This purpose is achieved by:

[0005] A first aspect of the present invention provides a force feedback device, the force feedback device comprising:

[0006] A housing, wherein a mounting cavity is provided inside the housing;

[0007] A magnetic component, the magnetic component is arranged in the installation cavity and connected to the shell;

[0008] A coil assembly, the coil assembly at least comprising a coil, the coil ring being arranged between the housing and the magnetic assembly;

[0009] An elastic member, at least part of which is inserted between the housing and the coil;

[0010] The magnetic component and the coil component can relatively reciprocate linearly along the axial direction of the coil component, and during the relative reciprocating linear motion, the shell and the coil jointly clamp the elastic member and compress the elastic member along the radial direction.

[0011] According to the force feedback device of the present invention, a magnetic component and a coil are arranged inside a shell, and the magnetic component is fixed on the shell. When the coil is energized, the magnetic component and the coil can perform relative reciprocating linear motion along the axial direction of the coil. At the same time, an elastic member is arranged between the shell and the coil, and the elastic member is always squeezed during the relative reciprocating linear motion of the magnetic component and the coil along the axial direction of the coil component, so that the radial position of the coil and the shell can be fixed, thereby preventing the magnetic component and the coil from deviating in the radial direction during the relative reciprocating linear motion in the axial direction, avoiding wear of the coil or the magnetic component, ensuring the reliability and safety of the equipment operation, and improving the service life of the equipment.

[0012] At the same time, since the elastic member has a certain radial force under the compression state, the coil and the shell can remain relatively fixed in the radial direction under the action of the radial force of the elastic member, so that during the relative linear movement of the magnetic component and the coil in the axial direction, the coil and the magnetic component can be stopped at any position in the axial direction, thereby effectively adjusting the fixed position of the coil or the shell.

[0013] In addition, the force feedback device according to the present invention may also have the following additional technical features:

[0014] In some embodiments of the present invention, during the relative reciprocating linear motion of the magnetic component and the coil component, the shell and the magnetic component constitute a stator component, and the coil component constitutes a mover component, and can reciprocate linearly along its own axial direction.

[0015] In some embodiments of the present invention, during the relative reciprocating linear motion of the magnetic component and the coil component, the coil component constitutes a stator component, and the shell and the magnetic component constitute a mover component, and can reciprocate linearly along the axial direction of the coil component.

[0016] In some embodiments of the present invention, the coil assembly also includes a fixing bracket, which includes a fixing part and a connecting part, the fixing part is inserted into the installation cavity, at least part of the connecting part extends to the outside of the installation cavity, and the outer side surface of the fixing part is provided with an annular groove, and the coil ring is arranged in the annular groove.

[0017] In some embodiments of the present invention, the elastic member is connected to the fixed bracket and is provided with a bending portion away from the coil, the bending portion is in contact with the inner wall surface of the shell, and an extrusion gap is provided between the bending portion and the coil; or the elastic member is connected to the inner wall surface of the shell and is provided with a bending portion toward the coil, the bending portion is in contact with the coil, and an extrusion gap is provided between the bending portion and the inner wall surface of the shell.

[0018] In some embodiments of the present invention, the elastic member is connected to the fixed bracket, and the elastic member is also provided with a mounting portion, and a plurality of the bending portions are provided in an edge spacing ring of the mounting portion, and the mounting portion is connected to an end face of the fixed portion, and the plurality of the bending portions are arranged on the outside of the coil and have the extrusion gaps respectively provided between the coils.

[0019] In some embodiments of the present invention, the force feedback device further includes a cover plate, one end of the shell is open, the cover plate is arranged to cover the opening, and the connecting portion passes through the cover plate and extends to the outside of the installation cavity.

[0020] In some embodiments of the present invention, the magnetic component includes a first magnet, a magnetic conductive plate, and a second magnet arranged in sequence along the axial direction, the first magnet or the second magnet is connected to the bottom of the mounting cavity, and the coil is arranged opposite to the magnetic conductive plate.

[0021] In some embodiments of the present invention, the elastic member is a metal sheet.

[0022] Another aspect of the present invention further provides an electronic device, wherein the electronic device has any of the force feedback devices described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0024] Figure 1 is a schematic diagram of the overall structure of the force feedback device of this embodiment;

[0025] Figure 2 for Figure 1 A cross-sectional view of the force feedback device along the plane where the axis is located;

[0026] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the coil assembly and the elastic member;

[0027] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0028] The symbols in the accompanying drawings are as follows:

[0029] 1: Force feedback device;

[0030] 10: housing, 11: mounting cavity;

[0031] 20: magnetic component, 21: first magnet, 22: magnetic conductive plate, 23: second magnet;

[0032] 30: coil assembly, 31: coil, 32: fixing bracket, 321: fixing portion, 3211: annular groove, 322: connecting portion, 3221: extending end;

[0033] 40: elastic member, 41: bending portion, 42: mounting portion;

[0034] 50: cover plate;

[0035] 60: End plate. DETAILED DESCRIPTION

[0036] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0037] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0038] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0039] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0040] The present invention proposes an electronic device, which may be a VR handle or a game handle, wherein a force feedback device is provided, and the force feedback device is used to provide feedback on the trigger force of the handle, thereby improving the user's perceptual experience.

[0041] Combination Figure 1 and Figure 2 As shown, the force feedback device 1 of this embodiment includes a housing 10, a magnetic assembly 20, a coil assembly 30 and an elastic member 40. The housing 10 is a cylindrical structure with one end open, and a mounting cavity 11 is provided inside the cylindrical structure. The magnetic assembly 20 is arranged in the mounting cavity 11 and connected to the housing 10. The magnetic assembly 20 of this embodiment includes a first magnet 21, a magnetic conductive plate 22 and a second magnet 23 arranged in sequence along the axial direction, wherein the cross-sections of the first magnet 21, the magnetic conductive plate 22 and the second magnet 23 are all circular and have the same diameter size, the first magnet 21, the magnetic conductive plate 22 and the second magnet 23 are coaxially arranged, and the two end faces of the magnetic conductive plate 22 are respectively glued to the first magnet 21 and the second magnet 23, thereby forming the magnetic assembly 20, and the formed magnetic assembly 20 is a cylindrical structure with the same diameter size of each cross section. The second magnet 23 is connected to the bottom of the mounting cavity 11, and the specific connection method can be glued or clamped, so as to fix the magnetic assembly 20 to the mounting cavity 11.

[0042] Combination Figure 2 and Figure 3As shown, the coil assembly 30 of this embodiment includes a fixed bracket 32 ​​and a coil 31, wherein the fixed bracket 32 ​​includes a fixed portion 321 and a connecting portion 322, the fixed portion 321 is plugged into the mounting cavity 11, a through hole is provided at the center of the fixed portion 321, and the diameter of the through hole is larger than the diameter of the magnetic component 20, so that the fixed portion 321 can be sleeved on the outside of the magnetic component 20 and form a certain gap with the outer peripheral surface of the magnetic component 20, thereby ensuring that the fixed bracket 321 can reciprocate in a straight line along the axial direction of the magnetic component 20 while effectively avoiding contact between the magnetic component 20 and the fixed bracket 321, thereby avoiding wear of the magnetic component 20 and improving the safety and reliability of the equipment.

[0043] Specifically, the outer peripheral surface of the fixing part 321 of the present embodiment is provided with an annular groove 3211, the coil 31 is arranged in the annular groove 3211 and is arranged opposite to the magnetic conductive plate 32, and the maximum diameter of the coil 31 arranged in the annular groove 3211 is substantially consistent with the diameter of the fixing part 321, so that the diameters of the cross sections of the part of the coil assembly 30 arranged in the installation cavity 11 are substantially equal, thereby ensuring that the coil assembly 30 and the magnetic assembly 20 can move relative to each other in the axial direction, and avoiding interference between the coil assembly 30 and the magnetic assembly 20 during the relative axial movement. The connecting part 322 is arranged outside the installation cavity 11 and connected to one end of the fixing part 321. The connecting part 322 of the present embodiment includes a plurality of protruding ends 3221, and the plurality of protruding end rings 3221 are arranged at the edge of the fixing part 321 and are arranged at intervals, and can be connected to other components outside the housing 10 through the protruding ends 3221, so as to be used to press or fix the force feedback device 1.

[0044] Combination Figure 2 , Figure 3 and Figure 4As shown, the elastic member 40 of this embodiment includes a mounting portion 42 and a bending portion 41, wherein the mounting portion 42 is a circular ring structure and is fitted on one end of the fixing portion 321 away from the connecting portion 322. A through hole is also provided at the center of the mounting portion 42, and the diameter of the through hole is larger than the diameter of the magnetic component 20, that is, larger than the diameter of any cross section of the magnetic component 20, so that the mounting portion 42 can be sleeved on the outside of the magnetic component 20 and can reciprocate linearly in the opposite axial direction of the magnetic component 20. Specifically, the mounting portion 42 and the fixing portion 321 can be connected in a variety of ways such as gluing, riveting or welding. The edge of the mounting portion 42 is ringed with a plurality of spaced bending portions 41, and the plurality of bending portions 41 are respectively protruded in a direction away from the coil 31 and ringed on the outside of the coil 31, and an extrusion gap is provided between any bending portion 41 and the coil 31. Specifically, the two ends of the bending portion 41 are fitted with the fixing portion 321, and the middle position of the bending portion 41 is protruded in the direction away from the coil 31. The elastic member 40 of this embodiment is a metal sheet, which can be made of copper, copper compound, aluminum or aluminum compound and other materials, and has good deformability and wear resistance. Among them, the shell 10 and the coil 31 clamp the elastic member 40 together and make the elastic member 40 compressed in the radial direction. During the relative reciprocating linear motion of the magnetic component 20 and the coil component 30 along the axial direction of the coil component 30, the elastic member 40 is always sleeved on the outside of the coil 31 and is in a radial compression state, so that the radial position of the coil 31 and the shell 10 can be fixed, thereby preventing the magnetic component 20 and the coil 30 from deviating in the radial direction during the relative reciprocating linear motion in the axial direction, avoiding the wear of the coil 30 or the magnetic component 20, ensuring the reliability and safety of the operation of the electronic device, and improving the service life of the electronic device.

[0045] At the same time, since the elastic part 40 has a certain radial force under the compression state, the coil 31 and the shell 10 can remain relatively fixed in the radial direction under the action of the radial force of the elastic part 40, so that during the relative reciprocating linear motion of the magnetic component 20 and the coil 31 in the axial direction, the coil 31 and the magnetic component 20 can be stopped at any position in the axial direction, thereby effectively adjusting the fixed position of the coil 20 or the shell 10.

[0046] At the same time, since the bent portion 41 of the elastic member 40 of this embodiment is sleeved on the outside of the coil 31, during the relative movement of the coil 31 and the shell 10, the elastic member 40 always protects the coil 31, and an extrusion gap is always provided between the elastic member 40 and the coil 31, thereby preventing the coil 31 from being worn during the linear reciprocating motion, thereby further improving the service life of the electronic device.

[0047] The installation portion 42 in the present application is provided to facilitate the connection between the elastic member 40 and the fixing bracket 32. In other embodiments of the present application, the installation portion 42 can be eliminated, and the two ends of the bent portion 41 are connected to the outer circumference of the fixing portion 321 in the axial direction, which can also protect the coil 31 and position the magnetic component 20 and the coil 31 in the radial direction during the relative reciprocating linear motion.

[0048] In other embodiments of the present application, a plurality of bending portions 41 may be interconnected to form an annular structure, and the center of the annular structure protrudes in a direction away from the coil 31 , and an extrusion gap is provided between the coil 31 .

[0049] In other embodiments of the present application, the elastic member 40 may also be connected to the inner wall surface of the housing 10, and provided with a bent portion 41 facing the coil 31, the bent portion 41 abuts against the coil 31, and an extrusion gap is provided between the bent portion 41 and the inner wall surface of the housing 10, which can also effectively position the coil assembly 30 and the magnetic assembly 20 in the radial direction. Further, in order to prevent the coil 31 from being worn during the relative movement between the coil 31 and the housing 10, a wear-resistant material or wear-resistant part is provided on the contact surface between the coil 31 and the bent portion 41.

[0050] In this embodiment, during the relative reciprocating linear motion of the magnetic component 20 and the coil component 30, the housing 10 and the magnetic component 20 constitute a stator component and are fixedly mounted on the electronic device, and the coil component 30 constitutes a mover component and can reciprocate linearly along its own axial direction. During the motion of the force feedback device 1, the positions of the housing 10 and the magnetic component 20 relative to the electronic device remain unchanged, and the coil component 30 reciprocates linearly along its own axial direction relative to the magnetic component 20, thereby outputting force feedback.

[0051] In other embodiments of the present application, during the relative reciprocating linear motion of the magnetic component 20 and the coil component 30, the coil component 30 constitutes a stator component, and the housing 10 and the magnetic component 20 constitute a mover component, and can reciprocate linearly along the axial direction of the coil component 30.

[0052] Furthermore, the force feedback device 1 of this embodiment further includes a cover plate 50, which is provided on one end of the housing 10 with an opening, and a through hole is provided at the edge of the cover plate 50, and the extended end 3221 can extend to the outside of the installation cavity 11 through the through hole on the cover plate 50. Through the provision of the cover plate 50, the axial displacement of the coil assembly 30 can be limited, so that the axial displacement of the fixing portion 321 and the coil 31 is limited to the bottom of the installation cavity 11 and the cover plate 50, thereby preventing the failure of the force feedback device 1 due to excessive axial displacement of the coil assembly 30. At the same time, the provision of the cover plate 50 facilitates the disassembly and installation of the magnetic assembly 20 and the coil assembly 30.

[0053] Furthermore, the force feedback device 1 of this embodiment further includes an end plate 60, which is disposed outside the mounting cavity 11 and connected to the ends of the plurality of protruding ends 3221. By providing the end plate 60, the axial position of the coil assembly 30 can be fixed by pressing the end plate 60, and the end plate 60 acts on the electronic device together with the driving force of the force feedback device 1, further improving the user experience.

[0054] According to the force feedback device 1 and the electronic device of the present invention, by arranging the magnetic component 20 and the coil 31 inside the shell 10, and fixing the magnetic component 20 on the shell 10, when the coil 31 is energized, the magnetic component 20 and the coil 31 can perform relative reciprocating linear motion along the axial direction of the coil 31. At the same time, an elastic member 40 is arranged between the shell 10 and the coil 31, and the elastic member 40 is always squeezed during the relative reciprocating linear motion of the magnetic component 20 and the coil 31 along the axial direction of the coil component 30, so that the radial position of the coil 31 and the shell 10 can be fixed, thereby preventing the magnetic component 20 and the coil 31 from deviating in the radial direction during the relative reciprocating linear motion in the axial direction, avoiding wear of the coil 31 or the magnetic component 20, ensuring the reliability and safety of the operation of the electronic device, and improving the service life of the electronic device.

[0055] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A force feedback device, characterized in that: include: A housing, wherein a mounting cavity is provided inside the housing; A magnetic component, the magnetic component is arranged in the installation cavity and connected to the shell; A coil assembly, the coil assembly at least comprising a coil, the coil ring being arranged between the housing and the magnetic assembly; An elastic member, at least part of which is inserted between the housing and the coil; The magnetic component and the coil component can relatively reciprocate linearly along the axial direction of the coil component, and during the relative reciprocating linear motion, the housing and the coil jointly clamp the elastic member and make the elastic member compressed along the radial direction; The coil assembly also includes a fixing bracket, which includes a fixing portion and a connecting portion. The fixing portion is inserted into the installation cavity, and at least part of the connecting portion extends to the outside of the installation cavity. An annular groove is provided on the outer side of the fixing portion, and the coil ring is arranged in the annular groove.

2. The force feedback device according to claim 1, characterized in that: During the relative reciprocating linear motion of the magnetic component and the coil component, the housing and the magnetic component constitute a stator component, and the coil component constitutes a mover component, and can reciprocate linearly along its own axial direction.

3. The force feedback device according to claim 1, characterized in that: During the relative reciprocating linear motion of the magnetic component and the coil component, the coil component constitutes a stator component, and the housing and the magnetic component constitute a mover component, and can reciprocate linearly along the axial direction of the coil component.

4. The force feedback device according to claim 1, characterized in that: The elastic member is connected to the fixed bracket and is provided with a bending portion away from the coil, the bending portion is in contact with the inner wall surface of the shell, and an extrusion gap is provided between the bending portion and the coil; or the elastic member is connected to the inner wall surface of the shell and is provided with a bending portion toward the coil, the bending portion is in contact with the coil, and an extrusion gap is provided between the bending portion and the inner wall surface of the shell.

5. The force feedback device according to claim 4, characterized in that: The elastic member is connected to the fixed bracket, and the elastic member is also provided with a mounting portion, and a plurality of the bending portions are provided at an edge spacing ring of the mounting portion. The mounting portion is connected to an end face of the fixed portion, and a plurality of the bending portions are arranged on the outside of the coil and have the extrusion gaps respectively between the coils.

6. The force feedback device according to claim 1, characterized in that: The force feedback device further includes a cover plate. One end of the shell is open. The cover plate is arranged to cover the opening. The connecting portion passes through the cover plate and extends to the outside of the installation cavity.

7. The force feedback device according to any one of claims 1 to 3, characterized in that: The magnetic assembly includes a first magnet, a magnetic conductive plate and a second magnet which are sequentially arranged along the axial direction; the first magnet or the second magnet is connected to the bottom of the installation cavity; and the coil is arranged opposite to the magnetic conductive plate.

8. The force feedback device according to any one of claims 1 to 3, characterized in that: The elastic member is a metal sheet.

9. An electronic device, characterized in that: The electronic device comprises a force feedback device according to any one of claims 1 to 8.

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