阅读说明：本技术 一种超薄型振动装置 (Ultra-thin type vibrating device ) 是由 王海童 赵磊 于 2021-06-28 设计创作，主要内容包括：本发明涉及一种超薄型振动装置,包括下壳体、上壳体、质量块以及弹片,所述质量块通过其两侧的弹片连接设置在上壳体内,所述质量块两侧对称制成折回曲面,所述折回曲面处设置有泡棉,所述弹片包括弧形连接件,所述弧形连接件的两端竖向侧壁一体延长分别制有第一振动臂和第二振动臂,所述第一振动臂的端部与质量块连接,所述第一振动臂与泡棉平行,所述第二振动臂的端部通过挡块与上壳体内壁连接。本发明结构新颖、安装便捷、通过在质量块上设对泡棉定位的折回曲面,起到定位泡棉位置的作用,同时使得产品振动过程中,减小泡棉对弹片寿命以及弹片自身固有系数的影响,提升产品性能良率,并且简化工艺装配过程,提升作业效率。(The invention relates to an ultrathin vibrating device which comprises a lower shell, an upper shell, a mass block and elastic pieces, wherein the mass block is connected and arranged in the upper shell through the elastic pieces on two sides of the mass block, two sides of the mass block are symmetrically made into a folding curved surface, foam is arranged on the folding curved surface, each elastic piece comprises an arc-shaped connecting piece, vertical side walls on two ends of each arc-shaped connecting piece are integrally extended to be respectively provided with a first vibrating arm and a second vibrating arm, the end part of each first vibrating arm is connected with the mass block, the first vibrating arms are parallel to the foam, and the end parts of the second vibrating arms are connected with the inner wall of the upper shell through stop blocks. The elastic piece vibration damper is novel in structure and convenient and fast to install, the folded curved surface for positioning the foam is arranged on the mass block, the effect of positioning the foam is achieved, meanwhile, the influence of the foam on the service life of the elastic piece and the inherent coefficient of the elastic piece is reduced in the product vibration process, the product performance yield is improved, the process assembly process is simplified, and the operation efficiency is improved.)

1. An ultrathin vibrating device comprises a lower shell, an upper shell, a circuit board, a coil, a mass block and an elastic sheet, wherein the circuit board is arranged in the middle of the upper surface of the lower shell, the coil is arranged on the upper part of the circuit board, and the lower shell, the circuit board and the coil form a stator; the mass block is positioned at the upper part of the coil, and a magnet is arranged in the mass block; the oblique symmetrical connection in quality piece both sides is provided with the shell fragment and forms the oscillator, go up the inside empty, its characterized in that of casing: the quality piece is connected through the shell fragment of its both sides and is set up in last casing, the curved surface of turning back is made to quality piece bilateral symmetry, curved surface department of turning back is provided with the bubble cotton, the shell fragment includes the arc connecting piece, the integrative extension in the vertical lateral wall in both ends of arc connecting piece has first vibrating arm and second vibrating arm respectively, the tip system of first vibrating arm has first installation arm, one side and the quality piece of installation arm are connected, just first vibrating arm is parallel with the bubble cotton, the tip system of second vibrating arm has the second installation arm, second installation arm one side is passed through dog and last shells inner wall and is connected, realizes that the oscillator is installed in last casing.

2. The ultra-thin type vibration device according to claim 1, wherein: support pieces are arranged on the opposite sides of the first mounting arm and the second mounting arm.

3. The ultra-thin type vibration device according to claim 1, wherein: and elastic piece welding chamfers are arranged at the oblique diagonal positions of the two sides of the mass block.

4. The ultra-thin type vibration device according to claim 1, wherein: the distance between the first vibration arm and the second vibration arm is larger and larger from one end close to the arc-shaped connecting piece to one end far away from the arc-shaped connecting piece.

5. The ultra-thin type vibration device according to claim 1, wherein: the width of the central portions of the first and second vibration arms is narrower than the width of both sides thereof.

6. The ultra-thin type vibration device according to claim 1, wherein: and the upper shell is also provided with a positioning through hole for ensuring the distance between the shell and the oscillator structure.

7. The ultra-thin type vibration device according to claim 1, wherein: the upper part of the mass block is also provided with a metal plate, and the metal plate is arranged on the magnet.

Technical Field

The invention belongs to the technical field of electromagnetism and vibration mechanics, and relates to a feedback function device of a complete machine device such as an earphone, a mobile phone, a gamepad and the like, in particular to an ultrathin vibration device.

Background

In order to achieve good vibration inductance, a linear motor in the current market is large in design size, occupies a large using space of a whole machine, and reduces the space utilization rate of the whole machine. Particularly, electronic complete machine products worn intelligently, such as intelligent watches, have higher requirements on ultra-thin design of linear motors; generally, because of small size of a linear motor, the miniaturization of parts causes poor positioning precision in the process of technological assembly, and especially, the space between a vibrator and a shell is often difficult to ensure the space gap precision due to the influence of the relation of magnetic materials of the shell; secondly, the linear motor is long in stroke, the braking time is shortened by attaching foam, but the service life of the elastic sheet and the inherent coefficient of the elastic sheet are affected by attaching the foam, and the frequency of the product is affected greatly due to different attaching positions of the foam, so that the consistency of product performance is poor; in addition, the welding process of the elastic sheet and the mass block is often a difficult point of the linear motor process, and if a welding gap is formed between the elastic sheet and the mass block, the undesirable risks of falling off of the elastic sheet, noise and the like can be caused when a product vibrates; in addition, the elastic sheet and the shell are often used as limiting damping in a foam pasting mode, so that the elastic sheet and the shell are prevented from colliding, the natural frequency of a product can be influenced by pasting foam on the inner side of the shell, and meanwhile, the elastic sheet is too large in stress, so that the service life and the reliability are invalid.

No patent documents relevant to the present application were found by search.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the novel structure, the convenient installation, the reduction of the product process difficulty, the simplification of the process manufacturing flow and the improvement of the product yield; and the ultra-thin type vibrating device can vibrate stably.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

an ultrathin vibrating device comprises a lower shell, an upper shell, a circuit board, a coil, a mass block and an elastic sheet, wherein the circuit board is arranged in the middle of the upper surface of the lower shell, the coil is arranged on the upper part of the circuit board, and the lower shell, the circuit board and the coil form a stator; the mass block is positioned at the upper part of the coil, and a magnet is arranged in the mass block; the oblique symmetrical connection in quality piece both sides is provided with the shell fragment and forms the oscillator, it is empty to go up the casing inside, the quality piece is connected through the shell fragment of its both sides and is set up in last casing, quality piece bilateral symmetry is made and is turned back the curved surface, it is provided with the bubble cotton to turn back curved surface department, the shell fragment includes the arc connecting piece, the integrative extension in the vertical lateral wall in both ends of arc connecting piece has first vibrating arm and second vibrating arm respectively, the tip system of first vibrating arm has first installation arm, one side and the quality piece of installation arm are connected, just first vibrating arm is parallel with the bubble cotton, the tip system of second vibrating arm has the second installation arm, second installation arm one side is passed through dog and last shells inner wall and is connected, realizes that the oscillator installs in last casing.

And, the first installation arm is provided with the backing sheet on the opposite side with the second installation arm.

And the oblique diagonal positions of the two sides of the mass block are provided with elastic piece welding chamfers.

Further, the distance between the first vibration arm and the second vibration arm becomes larger from the end close to the arc-shaped link to the end far from the arc-shaped link.

Also, the width of the central portions of the first and second vibration arms is narrower than the width of both sides thereof.

And moreover, the upper shell is also provided with a positioning through hole for ensuring the distance between the shell and the oscillator structure.

And the upper part of the mass block is also provided with a metal plate, and the metal plate is arranged above the magnet.

The invention has the advantages and positive effects that:

the upper and lower shells of the magnetic circuit breaker adopt magnetic materials, so that the utilization rate of a magnetic circuit system is improved, the reduction of magnetic flux leakage is ensured, and the product performance is improved; meanwhile, the upper shell is provided with the positioning through hole, so that the positioning effect on the vibrator structure can be realized, the space between the shell and the vibrator structure is ensured, and the problem of poor product performance caused by inaccurate gap precision between the vibrator and the shell due to the influence of the magnetic attraction between the shell and the magnet is solved;

the mass block is provided with the bent curved surface for positioning the foam, so that the foam is positioned, the foam is arranged and then is parallel to the elastic sheet vibrating arm, the influence of the foam on the service life of the elastic sheet and the inherent coefficient of the elastic sheet is reduced in the product vibrating process, the product performance yield is improved, the process assembly process is simplified, and the operation efficiency is improved;

the elastic sheet adopts a V-shaped bilateral asymmetric structure, so that the process welding space is enlarged, and the problem of shading of a welding machine in the process of process welding is solved; the mass block is provided with the elastic sheet welding chamfer, so that the welding process of the elastic sheet and the mass block is optimized, the occurrence of undesirable phenomena such as welding gaps is avoided, and the engineering yield is improved;

according to the invention, the mode of adding the stop block is adopted for welding between the elastic sheet and the shell, so that the influence on the characteristics of the product is reduced, the bad noise caused by the collision of the elastic sheet with the shell due to overlarge amplitude is avoided, the service life of the product is prolonged, and the feasibility strength of the product is increased.

Drawings

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an upper housing structure of the present invention;

FIG. 4 is a diagram of a vibrator according to the present invention;

FIG. 5 is a schematic view of a welded chamfer structure of the spring plate according to the present invention;

FIG. 6 is a spring structure;

fig. 7 is an internal structure of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.

An ultrathin vibrating device comprises a lower shell 11, an upper shell 1, a circuit board (FPCB)10, a coil 9, a mass block 3 and an elastic sheet 6, wherein the circuit board is arranged in the middle of the upper surface of the lower shell, the coil is arranged on the upper part of the circuit board, and the lower shell, the circuit board and the coil form a stator; the inner part of the upper shell is hollow and forms the outer contour of the vibrating device, the mass block comprises at least one magnet joint part for fixing the magnet 4 to ensure that the weight is provided, the weight is utilized to amplify the vibration, the two sides of the mass block are obliquely and symmetrically connected and provided with elastic sheets to form a vibrator, the mass block is connected and arranged in the upper shell through the elastic sheets on the two sides of the mass block, the upper shell and the lower shell are matched with each other to form a closed cavity, and the mass block is positioned right above the coil;

the two sides of the mass block are symmetrically made into a folding curved surface 12, foam 5 is arranged at the folding curved surface, the elastic sheet adopts a V-shaped bilateral asymmetric structure and comprises an arc-shaped connecting piece 6-4, two vibrating arms, namely a first vibrating arm 6-3 and a second vibrating arm 6-2, are integrally formed on the vertical side walls at the two ends of the arc-shaped connecting piece in an extending way, the end part of the first vibrating arm is integrally provided with a first mounting arm 6-5, one side of the mounting arm is connected with the mass block, and the first vibrating arm is parallel to and attached to the foam, so that the impact of the mass block on the elastic sheet can be absorbed by the foam, meanwhile, the end part of the second vibrating arm is also provided with a second mounting arm 6-1 integrally, one side of the second mounting arm is connected with the inner wall of the upper shell through a stop block 8, so that the vibrator is mounted in the upper shell;

furthermore, support pieces 7 are arranged on the opposite sides of the first mounting arm and the second mounting arm of the elastic sheet, and the support pieces greatly increase the vibration strength of the welding part of the elastic sheet;

furthermore, in order to optimize the welding operation of the elastic sheet and the mass block, avoid the occurrence of bad phenomena such as welding gaps and the like, and improve the engineering yield, the oblique diagonal positions on the two sides of the mass block are provided with elastic sheet welding chamfers 13, so that the elastic sheet and the mass block can be positioned and tightly attached, the connection is stable, the process difficulty is simplified, the problem of poor welding caused by poor attachment is solved, the yield of products is improved, and meanwhile, the deformation of the elastic sheet is prevented;

the distance between the two vibrating arms is gradually increased from one end close to the arc-shaped connecting piece to one end far away from the arc-shaped connecting piece, the width of the central parts of the two vibrating arms is narrow, the vibrating frequency is reduced, and the vibrating sensation is improved, wherein the improving of the vibrating sensation means that the higher the frequency is, the more the vibrating times are, the lower the frequency is, the less the vibrating times are, and therefore the vibrating times per minute are reduced; since the number of vibrations per minute is reduced, it becomes easier for a user (operator) to sense the vibrations; therefore, the elastic sheet can disperse the stress concentration phenomenon, thereby protecting the elastic sheet from being damaged;

in the specific implementation of the invention, the upper shell is also provided with a positioning through hole 1-1, so that the oscillator structure can be positioned, the space between the shell and the oscillator structure is ensured, and the problem of poor product performance caused by inaccurate gap precision between the oscillator and the shell due to the influence of the magnetic attraction between the shell and the magnet is solved;

the circuit board receives a power supply from the outside, the power supply is supplied to the coil, and the coil generates an electric field after receiving the power supply supplied by the circuit board, so that the generated electric field acts on the magnetic field of the magnet, and stable horizontal vibration is generated through the cooperation of the elastic sheets;

furthermore, the upper part of the mass block is also provided with a metal plate 2, the metal plate is arranged on the magnet to block the magnetic field generated by the magnet in the mass block from forming a closed loop of the magnetic field and has the function of shielding the magnetic field.

In the specific implementation of the invention, the upper and lower shells are made of magnetic conductive materials, so that the utilization rate of a magnetic circuit system is improved, the reduction of magnetic leakage is ensured, and the product performance is improved; meanwhile, the upper shell is provided with the positioning through hole, so that the positioning effect on the vibrator structure can be realized, the space between the shell and the vibrator structure is ensured, and the problem of poor product performance caused by inaccurate gap precision between the vibrator and the shell due to the influence of the magnetic attraction between the shell and the magnet is solved;

in the specific implementation of the invention, the mass block is provided with the bent curved surface for positioning the foam, so that the foam is positioned, and the foam is arranged and then is parallel to the elastic sheet vibrating arm, so that the influence of the foam on the service life of the elastic sheet and the inherent coefficient of the elastic sheet is reduced in the product vibrating process, the product performance yield is improved, the process assembly process is simplified, and the operation efficiency is improved;

in the specific implementation of the invention, the elastic sheet adopts a V-shaped bilateral asymmetric structure, so that the process welding space is enlarged, and the problem of shading of a welding machine in the process of process welding is solved; the mass block is provided with the elastic sheet welding chamfer, so that the welding process of the elastic sheet and the mass block is optimized, the occurrence of undesirable phenomena such as welding gaps is avoided, and the engineering yield is improved;

in the specific implementation of the invention, the mode of adding the stop block is adopted for welding between the elastic sheet and the shell, so that the influence on the characteristics of the product is reduced, the bad noise caused by the collision between the elastic sheet and the shell due to overlarge amplitude is avoided, the service life of the product is prolonged, and the feasibility strength of the product is increased.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.