阅读说明：本技术 一种微型触觉执行器及其加工方法 (Micro tactile actuator and processing method thereof ) 是由 陶红仲 莫丽丽 吴逸飞 于 2021-09-06 设计创作，主要内容包括：本发明涉及振动技术领域,尤其涉及一种微型触觉执行器及其加工方法,包括：盖板以及固定设置在盖板上的控制系统和两支架,控制系统包括线路板及线圈,两支架位于控制系统两端；振动系统,振动系统包括运动块、磁路系统和两定位弹片,磁路系统设置于运动块内,两定位弹片其中一端分别固定设置于运动块两端,另一端分别与两支架固定连接；其中,线圈与磁路系统位置对应设置,线圈对磁路系统提供磁场,磁路系统在磁场作用下推动运动块进行运动。本发明中,采用将振动系统和盖板固定的方式,使得结构更紧凑,通过线圈对磁路系统提供磁场,实现了更快的反应速度,在游戏等场景下可实现和游戏本身需求同步,起到触觉反馈及游戏振动反馈的作用。(The invention relates to the technical field of vibration, in particular to a micro-tactile actuator and a processing method thereof, wherein the micro-tactile actuator comprises the following steps: the control system comprises a circuit board and a coil, and the two brackets are positioned at the two ends of the control system; the vibration system comprises a motion block, a magnetic circuit system and two positioning elastic sheets, wherein the magnetic circuit system is arranged in the motion block, one end of each positioning elastic sheet is fixedly arranged at the two ends of the motion block, and the other end of each positioning elastic sheet is fixedly connected with the two brackets; the coil is arranged corresponding to the magnetic circuit system, the coil provides a magnetic field for the magnetic circuit system, and the magnetic circuit system pushes the moving block to move under the action of the magnetic field. According to the invention, the vibration system and the cover plate are fixed, so that the structure is more compact, the magnetic field is provided for the magnetic circuit system through the coil, the faster response speed is realized, the synchronization with the requirements of games can be realized in the scenes such as games, and the effects of touch feedback and game vibration feedback are realized.)

1. A micro tactile actuator, comprising:

the control system comprises a circuit board and a coil, and the two brackets are positioned at two ends of the control system;

the vibration system comprises a motion block, a magnetic circuit system and two positioning elastic sheets, the magnetic circuit system is arranged in the motion block, one end of each positioning elastic sheet is fixedly arranged at two ends of the motion block, and the other end of each positioning elastic sheet is fixedly connected with the two brackets;

the coil is arranged corresponding to the magnetic circuit system, the coil provides a magnetic field for the magnetic circuit system, and the magnetic circuit system pushes the motion block to move under the action of the magnetic field.

2. The micro haptic actuator according to claim 1, wherein a through slot is disposed in the middle of the moving block, the length of the through slot extends perpendicular to the moving direction of the moving block, the magnetic circuit system comprises two magnetic steels and a pole piece, the two magnetic steels are respectively fixed to two ends of the pole piece, the two magnetic steels and the pole piece are fixed in the through slot, and the magnetic polarities of the two magnetic steels near the coil are opposite.

3. A micro tactile actuator according to claim 2, wherein the through slot is fixedly provided with a base plate at an end remote from the coil, the base plate covering the through slot.

4. The micro tactile actuator according to claim 1, wherein the moving block is a centrosymmetric structure, and the two supports and the two positioning clips are respectively arranged in a centrosymmetric manner with respect to the moving block.

5. The micro tactile actuator according to claim 4, wherein the motion block comprises two connection sections and an inclined section, the two connection sections are respectively located at two ends of the inclined section, and the two connection sections and the inclined section are arranged along a direction perpendicular to a motion direction of the motion block;

the projections of the two connecting sections on the cover plate are rectangular, the projections of the inclined sections on the cover plate are parallelogram, the two positioning elastic pieces are respectively fixedly connected with one ends of the two connecting sections, and the two connecting sections are respectively inclined towards the direction close to the connected positioning elastic pieces through the inclined sections.

6. The micro tactile actuator according to claim 5, wherein the inclined section is provided with grooves at both ends of the moving block in the moving direction, and the grooves are filled with buffers.

7. The micro-actuator of claim 1, wherein the two brackets are L-shaped, one end of each bracket is fixed to the cover plate, the other end of each bracket is fixedly connected to the positioning spring, and a gap is formed between the moving block and the coil.

8. The micro-actuator of claim 1, wherein the cover is fixedly disposed with a housing, and the two supports and the vibration system are disposed in the housing.

9. A micro-haptic actuator processing method, comprising the steps of:

welding a bottom plate at one end of the through groove of the motion block by laser;

fixing the two magnetic steels and the pole piece by glue, wherein the two magnetic steels are opposite in magnetism and are positioned at two ends of the pole piece to form a magnetic circuit system;

fixing the magnetic circuit system in the through groove of the motion block by using glue;

two positioning elastic sheets are welded at two ends of the motion block in a laser mode, the two positioning elastic sheets are arranged in a central symmetry mode, and two connecting sections of the motion block incline towards the direction close to the connected positioning elastic sheets through inclined sections;

fixing the circuit board on the cover plate, fixing the coil on the circuit board, and welding the circuit board and the coil inlet and outlet wires together;

laser welding two supports on the cover plate, wherein the two supports are arranged in a centrosymmetric manner and are positioned at the two ends of the circuit board;

the two supports are respectively fixed with the two positioning elastic sheets in a laser welding way, and one end with the bottom sheet is far away from the coil;

the cover plate and the housing are laser welded together.

Technical Field

The invention relates to the technical field of vibration, in particular to a micro tactile actuator and a processing method thereof.

Background

At present, electronic products are increasingly lighter, thinner and smaller, and have more and more functions, for example, a mobile phone is not limited to making a call and receiving and sending information, music, news and games have become the main uses of the mobile phone, and the mobile phone games pay more attention to the experience of the games, including visual impact and tactile impact.

With the thinning of the mobile phone, the utilization rate of the internal space of the mobile phone is higher and higher, so that the components are more and more miniaturized and compacted, but for the touch vibration, the traditional micro motor such as a flat motor can achieve a simple vibration effect due to the fact that the micro motor is a small direct current motor, but the requirement of a user is far out of reach in the real experience.

In view of the above problems, the designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is actively researched and innovated in cooperation with the application of scholars, so as to create a micro tactile actuator and a processing method thereof, and the micro tactile actuator is more practical.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention provides a micro-tactile actuator and a processing method thereof, thereby effectively solving the problems in the background art.

In order to achieve the purpose, the invention adopts the technical scheme that: a micro-haptic actuator, comprising:

the control system comprises a circuit board and a coil, and the two brackets are positioned at two ends of the control system;

the vibration system comprises a motion block, a magnetic circuit system and two positioning elastic sheets, the magnetic circuit system is arranged in the motion block, one end of each positioning elastic sheet is fixedly arranged at two ends of the motion block, and the other end of each positioning elastic sheet is fixedly connected with the two brackets;

the coil is arranged corresponding to the magnetic circuit system, the coil provides a magnetic field for the magnetic circuit system, and the magnetic circuit system pushes the motion block to move under the action of the magnetic field.

Furthermore, a through groove is formed in the middle of the moving block, the length extending direction of the through groove is perpendicular to the moving direction of the moving block, the magnetic circuit system comprises two magnetic steels and a pole piece, the two magnetic steels are respectively fixed at two ends of the pole piece, the two magnetic steels and the pole piece are fixed in the through groove, and the two magnetic steels have opposite magnetism at one ends close to the coils.

Furthermore, a bottom plate is fixedly arranged at one end of the through groove far away from the coil, and the bottom plate covers the through groove.

Furthermore, the motion block is of a centrosymmetric structure, and the two brackets and the two positioning elastic sheets are respectively arranged around the motion block centrosymmetrically.

Furthermore, the motion block comprises two connecting sections and an inclined section, the two connecting sections are respectively positioned at two ends of the inclined section, and the two connecting sections and the inclined section are arranged along a motion direction perpendicular to the motion block;

the projections of the two connecting sections on the cover plate are rectangular, the projections of the inclined sections on the cover plate are parallelogram, the two positioning elastic pieces are respectively fixedly connected with one ends of the two connecting sections, and the two connecting sections are respectively inclined towards the direction close to the connected positioning elastic pieces through the inclined sections.

Furthermore, the two ends of the inclined section in the moving direction of the moving block are provided with grooves, and the grooves are filled with buffering pieces.

Furthermore, the two brackets are L-shaped, one end of each bracket is fixed on the cover plate, the other end of each bracket is fixedly connected with the positioning elastic sheet, and a gap is formed between the motion block and the coil.

Furthermore, a shell is fixedly arranged on the cover plate, and the two supports and the vibration system are positioned in the shell.

The invention also comprises a processing method of the micro-tactile actuator, which comprises the following steps:

welding a bottom plate at one end of the through groove of the motion block by laser;

fixing the two magnetic steels and the pole piece by glue, wherein the two magnetic steels are opposite in magnetism and are positioned at two ends of the pole piece to form a magnetic circuit system;

fixing the magnetic circuit system in the through groove of the motion block by using glue;

two positioning elastic sheets are welded at two ends of the motion block in a laser mode, the two positioning elastic sheets are arranged in a central symmetry mode, and two connecting sections of the motion block incline towards the direction close to the connected positioning elastic sheets through inclined sections;

fixing the circuit board on the cover plate, fixing the coil on the circuit board, and welding the circuit board and the coil inlet and outlet wires together;

laser welding two supports on the cover plate, wherein the two supports are arranged in a centrosymmetric manner and are positioned at the two ends of the circuit board;

the two supports are respectively fixed with the two positioning elastic sheets in a laser welding way, and one end with the bottom sheet is far away from the coil;

the cover plate and the housing are laser welded together.

The invention has the beneficial effects that: the invention has the advantages that the cover plate, the control system, the bracket and the vibration system are arranged, the vibration system is equivalently fixed on the cover plate through the bracket, the product structure and the process are optimized by adopting a mode of fixing the vibration system and the cover plate, the structure is more compact, the design of product miniaturization and compact structure is met, the magnetic field is provided for the magnetic circuit system through the coil, the magnetic circuit system pushes the moving block to move under the action of the magnetic field, the vibration is generated, the faster response speed is realized, the starting and braking speeds are high, the synchronization with the requirements of the game can be realized under the scenes of games and the like, and the effects of touch feedback and game vibration feedback are realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a micro-actuator according to the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is an exploded view of the vibration system;

FIG. 4 is an exploded view of the cover plate, control system and bracket;

FIG. 5 is a top view of the vibration system;

FIG. 6 is a side view of the hidden housing;

fig. 7 and 8 are schematic diagrams of vibration.

Reference numerals: 1. a cover plate; 11. a housing; 2. a control system; 21. a circuit board; 22. a coil; 3. a support; 4. a vibration system; 41. a motion block; 411. a through groove; 412. a negative film; 413. a connecting section; 424. an inclined section; 415. a groove; 42. a magnetic circuit system; 421. magnetic steel; 422. pole pieces; 43. and positioning the elastic sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 6: a micro-haptic actuator, comprising:

the device comprises a cover plate 1, a control system 2 and two supports 3, wherein the control system 2 and the two supports 3 are fixedly arranged on the cover plate 1, the control system 2 comprises a circuit board 21 and a coil 22, and the two supports 3 are positioned at two ends of the control system 2;

the vibration system 4 comprises a motion block 41, a magnetic circuit system 42 and two positioning elastic sheets 43, wherein the magnetic circuit system 42 is arranged in the motion block 41, one end of each of the two positioning elastic sheets 43 is fixedly arranged at two ends of the motion block 41, and the other end of each of the two positioning elastic sheets 43 is fixedly connected with the two brackets 3;

the coil 22 is disposed corresponding to the magnetic circuit system 42, the coil 22 provides a magnetic field to the magnetic circuit system 42, and the magnetic circuit system 42 pushes the moving block 41 to move under the action of the magnetic field.

Through setting up apron 1, control system 2, support 3 and vibration system 4, vibration system 4 passes through support 3 and fixes on apron 1 equivalently, adopt the mode of fixing vibration system 4 and apron 1, product structure and technology have been optimized, make the structure compacter, thereby product miniaturization has been satisfied, the design of compactification, provide magnetic field through coil 22 to magnetic circuit 42, magnetic circuit 42 impels motion piece 41 to move under the magnetic field effect, thereby produce the vibration, faster reaction rate has been realized, start and brake speed are fast, can realize under scenes such as recreation with recreation self demand synchronization, play the effect of tactile feedback and recreation vibration feedback.

In this embodiment, a through slot 411 is disposed in the middle of the moving block 41, the length extending direction of the through slot 411 is perpendicular to the moving direction of the moving block 41, the magnetic circuit system 42 includes two magnetic steels 421 and a pole piece 422, the two magnetic steels 421 are respectively fixed at two ends of the pole piece 422, the two magnetic steels 421 and the pole piece 422 are fixed in the through slot 411, and the polarities of the two ends of the two magnetic steels 421 close to the coil 22 are opposite.

The magnetic circuit system 42 is formed by arranging the two magnetic steels 421 and the pole piece 422, the matching mode of the double magnetic steels 421 and the single coil 22 is adopted, the magnetic energy is increased, the faster reaction speed and the wider use frequency are realized, and the better tactile feedback can be provided while the size of the product is reduced.

As shown in fig. 7 to 8, after receiving the ac electrical signal, the coil 22 generates an SN/NS magnetic field and two magnetic fields with opposite polarities through electromagnetic induction, respectively, to generate attraction and repulsion forces, so as to push the elastic sheet to move, thereby driving the moving block 41 to vibrate and generate touch.

In the above embodiment, the through-slot 411 is preferably provided with a bottom plate 412 at one end remote from the coil 22, and the bottom plate 412 covers the through-slot 411.

By providing the bottom plate 412, the magnetic circuit system 42 in the through groove 411 is protected, and the product stability is increased.

In this embodiment, the moving block 41 has a central symmetrical structure, and the two brackets 3 and the two positioning elastic pieces 43 are respectively arranged in a central symmetrical manner about the moving block 41.

Through setting up motion block 41 to central symmetry structure, two supports 3 and two location shell fragment 43 are respectively about motion block 41 central symmetry setting, and in motion block 41 motion process, can be better reset and increase the vibration frequency of motion block 41, also increased the stability of inner structure.

As a preference of the above embodiment, the moving block 41 includes two connecting sections 413 and an inclined section 424, the two connecting sections 413 are respectively located at two ends of the inclined section 424, and the two connecting sections 413 and the inclined section 424 are arranged along a direction perpendicular to the moving direction of the moving block 41;

the projections of the two connecting sections 413 on the cover plate 1 are rectangular, the projections of the inclined sections 424 on the cover plate 1 are parallelogram, the two positioning elastic sheets 43 are respectively fixedly connected with one ends of the two connecting sections 413, and the two connecting sections 413 are respectively inclined towards the direction close to the connected positioning elastic sheets 43 through the inclined sections 424.

Through setting up two linkage segments 413 and slope section 424, the projection of two linkage segments 413 on apron 1 is the rectangle, the projection of slope section 424 on apron 1 is parallelogram, two linkage segments 413 pass through slope section 424 and incline to the location shell fragment 43 direction that is close to the connection respectively, thereby when the motion piece 41 moves, can dodge two location shell fragments 43, prevent that another linkage segment 413 from touchhing location shell fragment 43, thereby influence the stability and the effect that resets of vibration.

As a preference of the above embodiment, the inclined segment 424 is provided with grooves 415 at both ends of the moving block 41 in the moving direction, and the grooves 415 are filled with a buffer.

The grooves 415 are formed in the two ends of the inclined section 424 in the moving direction of the moving block 41, and the grooves 415 are filled with buffering parts, so that the moving block 41 can be buffered, the connection stability is improved, and the service life is prolonged.

In this embodiment, the two brackets 3 are L-shaped, one end of each of the two brackets 3 is fixed on the cover plate 1, the other end is fixedly connected with the positioning elastic sheet 43, and a gap is formed between the moving block 41 and the coil 22.

Through setting up two supports 3 to the L type, its simple structure, simple to operate also can guarantee to move and have certain clearance between the coil 22 to can not cause the interference to the motion of motion piece 41, guarantee the vibration effect.

Preferably, the cover plate 1 is fixedly provided with a housing 11, and the two brackets 3 and the vibration system 4 are located in the housing 11.

Through setting up shell 11, can protect its inner structure, improve product stability, increase life.

The embodiment also comprises a processing method of the micro-tactile actuator, which comprises the following steps:

laser welding the bottom plate 412 to one end of the through slot 411 of the motion block 41;

fixing the two magnetic steels 421 and the pole piece 422 with glue, wherein the two magnetic steels 421 have opposite magnetism and are positioned at two ends of the pole piece 422 to form a magnetic circuit system 42;

fixing the magnetic circuit system 42 in the through slot 411 of the motion block 41 by glue;

two positioning elastic sheets 43 are welded at two ends of the motion block 41 in a laser mode, the two positioning elastic sheets 43 are arranged in a central symmetry mode, and two connecting sections 413 of the motion block 41 are respectively inclined towards the direction close to the connected positioning elastic sheets 43 through inclined sections 424;

fixing the circuit board 21 on the cover plate 1, fixing the coil 22 on the circuit board 21, and welding the circuit board 21 and the coil 22 together;

laser welding two brackets 3 on the cover plate 1, wherein the two brackets 3 are arranged in a central symmetry manner and are positioned at two ends of the circuit board 21;

the two brackets 3 are respectively fixed with the two positioning elastic sheets 43 by laser welding, and one end with the bottom sheet 412 is far away from the coil 22;

the cover plate 1 and the housing 11 are laser welded together.

Through the mode of laser welding, fix, optimized product production technology, improved the stability of product, when optimizing product inner structure, guarantee its fixed connection's reliability to increase life.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.