阅读说明：本技术 超薄微型振动装置 (Ultra-thin miniature vibrating device ) 是由 王海童 崔常富 于 2021-06-25 设计创作，主要内容包括：本发明涉及一种超薄微型振动装置,包括上壳、下壳、定子及振子,在所述下壳的上端面上扣装有上壳,上壳与下壳配合形成闭合腔体,在闭合腔体内从下至上依次设置有定子及振子,其特征在于：在所述下壳的上端面上设置有嵌装定子的内凹面,在内凹面的上端面振子的前后两端相错设置有限位凸台,在限位凸台上设置有振子；在所述振子的质量块左右两侧均设置有限位凹面,在限位凹面的侧面壁处抵接设置阻尼器,在阻尼器的外部设置使振子在闭合腔体内悬置的弹片。本发明设计科学合理,具有整机超薄、振动效果好、性能稳定、方便装配、易于实现等优点,是一种具有较高创新性的超薄微型振动装置。(The invention relates to an ultrathin miniature vibration device, which comprises an upper shell, a lower shell, a stator and a vibrator, wherein the upper shell is buckled on the upper end surface of the lower shell, the upper shell and the lower shell are matched to form a closed cavity, and the stator and the vibrator are sequentially arranged in the closed cavity from bottom to top, and the ultrathin miniature vibration device is characterized in that: an inner concave surface for embedding the stator is arranged on the upper end surface of the lower shell, limiting bosses are arranged at the front end and the rear end of the vibrator on the upper end surface of the inner concave surface in a staggered manner, and vibrators are arranged on the limiting bosses; the left side and the right side of the mass block of the vibrator are both provided with limiting concave surfaces, the side wall of each limiting concave surface is abutted with a damper, and the outside of each damper is provided with an elastic sheet which enables the vibrator to be suspended in a closed cavity. The invention has scientific and reasonable design, has the advantages of ultrathin whole machine, good vibration effect, stable performance, convenient assembly, easy realization and the like, and is an ultrathin micro vibration device with higher innovation.)

1. The utility model provides an ultra-thin miniature vibrating device, includes epitheca, inferior valve, stator and oscillator the spiral-lock is equipped with the epitheca on the up end of inferior valve, and the epitheca forms closed cavity with the cooperation of inferior valve, from supreme stator and the oscillator of having set gradually down in closed cavity, its characterized in that: an inner concave surface for embedding the stator is arranged on the upper end surface of the lower shell, limiting bosses are arranged at the front end and the rear end of the vibrator on the upper end surface of the inner concave surface in a staggered manner, and vibrators are arranged on the limiting bosses; the left side and the right side of the mass block of the vibrator are both provided with limiting concave surfaces, the side wall of each limiting concave surface is abutted with a damper, and the outside of each damper is provided with an elastic sheet which enables the vibrator to be suspended in a closed cavity.

2. The ultra-thin micro oscillating device of claim 1, further comprising: the stator is composed of a flexible printed circuit board and a coil, the flexible printed circuit board is embedded on the inner concave surface of the lower shell, a circuit board through hole is formed in the middle of the flexible printed circuit board, the coil is arranged on the circuit board through hole, the bottom surface of the coil is bonded with the lower shell, and a lead led out from the coil is led out from the circuit board through hole.

3. The ultra-thin micro oscillating device of claim 1, further comprising: the vibrator consists of a mass block, permanent magnets, metal plates, a damper, elastic sheets and supporting blocks, wherein the two permanent magnets penetrate through the mass block, the metal plates embedded on the upper end surface of the mass block cover the permanent magnets, limiting convex blocks protruding outwards are arranged on the front end surface and the rear end surface of the mass block, limiting concave surfaces arranged at the rear part and the front part are respectively arranged on the left end surface and the right end surface of the mass block, and the damper is arranged along the side wall of the limiting concave surface; the elastic sheet is of a C-shaped structure, a vibration arm is formed at the horizontal part of the elastic sheet, clamping sheets are vertically bent at the front end and the rear end of the vibration arm, supporting blocks are arranged on the same end surface of the clamping sheet on the same elastic sheet, the elastic sheet is clamped at the left end and the right end of the mass block through the matching of the elastic sheet and the supporting blocks, and the clamping sheet and the supporting blocks at one end of the elastic sheet are abutted against the limiting convex blocks; the limiting lug boss, the clamping piece and the supporting block are arranged on the limiting lug boss in an abutting mode.

4. The ultra-thin micro oscillating device of claim 1, further comprising: the damper is made of foam.

Technical Field

The invention relates to an improvement on the overall structure of an ultrathin miniature linear motor, which belongs to the field of application of feedback function devices of intelligent watches, mobile phones, electronic cigarettes and complete devices.

Background

Linear motors in the market at present, such as transverse linear motors, are widely applied to current intelligent complete machine products due to high starting speed and good vibration feeling.

Originally, the vibration effect is mainly for information prompt, but with the development of intelligent products, the simulation feedback is that the vibration of a built-in linear motor simulates the hand feeling of bouncing when a key is pressed after being pressed by touch, and the simulation feedback is gradually applied to various fields such as games, telephone dialing, electronic cigarettes and intelligent watch heart rate detection. Meanwhile, for better appearance and use comfort of the electronic whole machine product, the requirements on the appearance of the whole machine product and the ultra-thin design of the linear motor are more and more strict.

The conventional linear motor is a mode of increasing vibration inductance, increasing the vibration space of a product and increasing the utilization rate of magnetic induction lines by increasing mass blocks, and increasing the driving force of the product, but the modes are realized by requiring larger height and space, so that the difficulty is brought to the 'thinning and flattening' design of the product, the height of the product is reduced to the minimum under the condition of meeting the requirement of product performance, and the problem to be solved in the structural design of the linear motor product is solved urgently; in addition, the displacement of the existing linear motor is limited by sticking foam or injecting magnetic fluid, the braking time is shortened, the foam is used as damping, and if the sticking positions of the foam are not right, the local stress of the elastic sheet in the vibration process is increased, so that the service life of the elastic sheet is shortened, the inherent coefficient of the elastic sheet is changed, the influence on the inherent frequency of a product is large, and the stability of the performance of the product is not facilitated. Therefore, in order to solve the problems, the development is carried out, and a linear motor structure with extremely low height, good vibration effect and relatively stable performance is designed.

Disclosure of Invention

The invention aims to provide an ultrathin miniature vibration device which is scientific and reasonable in structural design, ultrathin in whole machine, good in vibration effect, stable in performance, convenient to assemble and easy to realize.

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

the utility model provides an ultra-thin miniature vibrating device, includes epitheca, inferior valve, stator and oscillator the spiral-lock is equipped with the epitheca on the up end of inferior valve, and the epitheca forms closed cavity with the cooperation of inferior valve, from supreme stator and the oscillator of having set gradually down in closed cavity, its characterized in that: an inner concave surface for embedding the stator is arranged on the upper end surface of the lower shell, limiting bosses are arranged at the front end and the rear end of the vibrator on the upper end surface of the inner concave surface in a staggered manner, and vibrators are arranged on the limiting bosses; the left side and the right side of the mass block of the vibrator are both provided with limiting concave surfaces, the side wall of each limiting concave surface is abutted with a damper, and the outside of each damper is provided with an elastic sheet which enables the vibrator to be suspended in a closed cavity.

The stator is composed of a flexible printed circuit board and a coil, the flexible printed circuit board is embedded on the inner concave surface of the lower shell, a circuit board through hole is formed in the middle of the flexible printed circuit board, the coil is arranged on the circuit board through hole, the bottom surface of the coil is bonded with the lower shell, and a lead led out from the coil is led out from the circuit board through hole.

The vibrator is composed of a mass block, permanent magnets, metal plates, a damper, elastic pieces and supporting blocks, the two permanent magnets penetrate through the mass block, the metal plates embedded on the upper end face of the mass block cover the permanent magnets, limiting convex blocks protruding outwards are arranged on the front end face and the rear end face of the mass block, limiting concave faces arranged at the rear part and the front part are respectively arranged on the left end face and the right end face of the mass block, and the damper is arranged along the side face wall of the limiting concave face; the elastic sheet is of a C-shaped structure, a vibration arm is formed at the horizontal part of the elastic sheet, clamping sheets are vertically bent at the front end and the rear end of the vibration arm, supporting blocks are arranged on the same end surface of the clamping sheet on the same elastic sheet, the elastic sheet is clamped at the left end and the right end of the mass block through the matching of the elastic sheet and the supporting blocks, and the clamping sheet and the supporting blocks at one end of the elastic sheet are abutted against the limiting convex blocks; the limiting lug boss, the clamping piece and the supporting block are arranged on the limiting lug boss in an abutting mode.

Moreover, the damper is made of foam.

The invention has the advantages and beneficial effects that:

1. the ultrathin miniature vibration device reduces the overall height of the stator component and improves the overall height and space utilization rate of a product by the design of the inner concave surface on the lower shell; the inner concave surface can be used for positioning the flexible printed circuit board, so that the process difficulty is reduced, and the assembly is convenient. The damper is limited by the design of the limiting concave surface of the mass block and the forward or backward side wall formed at the limiting concave surface, so that the damper is convenient to assemble and prevented from moving, meanwhile, due to the limitation of the damper, the installation inclination of the damper on the side wall of the mass block is ensured to be consistent with the inclination of the elastic piece vibrating arm, the stability during vibration is ensured, the influence of the foam sticking position on the stress and the inherent coefficient of the elastic piece is reduced, and the service life of a product is prolonged; in addition, when the foam is manufactured and assembled, the foam can be easily adhered, so that the assembly period is effectively shortened, and the process flow is simplified.

2. According to the ultrathin miniature vibration device, the structure at the position of the bearing coil of the flexible printed circuit board is designed to be an ultrathin structure with a hollowed middle part, so that the overall height of the stator is effectively reduced, the overall height space utilization rate is improved, and the ultrathin design and the overall performance improvement are facilitated; in addition, through the design of the circuit board through hole in the middle of the flexible printed circuit board, the middle part of the coil can be directly bonded with the shell, so that the bonding force is increased, the feasibility of the product is improved, and meanwhile, the coil is prevented from being directly contacted with the lower shell, and poor insulation is avoided; meanwhile, the lead-out wire at the lower end of the coil can be smoothly led out to the FPCB tin plate through the circuit board through hole, so that the production process is simplified, and the assembly yield of product parts is improved.

3. According to the ultrathin miniature vibration device, the mass block and the elastic sheet can be accurately and automatically positioned by the design of the limiting lugs on the front end face and the rear end face of the mass block; two-surface contact ensures the firmness of the later welding process and ensures and reduces the difficulty of the manufacturing process.

4. The invention has scientific and reasonable design, has the advantages of ultrathin whole machine, good vibration effect, stable performance, convenient assembly, easy realization and the like, and is an ultrathin micro vibration device with higher innovation.

Drawings

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

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

FIG. 3 is a perspective view of the present invention with the upper shell omitted;

FIG. 4 is a top view of a transducer of the present invention;

FIG. 5 is a schematic view (plan view) showing the structure of the assembly of the flexible printed wiring board with the lower case of the present invention;

FIG. 6 is a structural view of the lower case of the present invention;

FIG. 7 is a cross-sectional view of a stator of the present invention;

FIG. 8 is a perspective view of the stator of the present invention;

FIG. 9 is a schematic structural diagram of a mass of the present invention;

FIG. 10 is a schematic view of another angular configuration of the mass of the present invention;

fig. 11 is a schematic structural view of the elastic sheet of the present invention.

Description of the reference numerals

1-upper shell, 2-mass block, 3-metal plate, 4-permanent magnet, 5-supporting block, 6-elastic sheet, 7-foam, 8-coil, 9-flexible printed circuit board, 10-lower shell, 11-circuit board through hole, 12-limit boss, 13-clamping sheet, 14-inner concave surface, 15-magnet mounting opening, 16-side wall and 17-vibrating arm.

Detailed Description

The present invention is further illustrated by the following specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.

The utility model provides an ultra-thin miniature vibrating device, includes epitheca 1, inferior valve 10, stator and oscillator the spiral-lock is equipped with the epitheca on the up end of inferior valve, and the epitheca forms closed cavity with the cooperation of inferior valve, follows supreme stator and the oscillator of having set gradually down in closed cavity, and its innovation part lies in: an inner concave surface 14 for embedding the stator is arranged on the upper end surface of the lower shell, the inner concave surface can reduce the overall height of the stator part, and the overall height space utilization rate of a product is improved; the flexible printed circuit board can be positioned by utilizing the inner concave surface, so that the process difficulty is reduced, and the assembly is convenient; the front end and the rear end of the vibrator on the upper end surface of the inner concave surface are provided with limit bosses 12 in a staggered manner, and the limit bosses are provided with vibrators; limiting concave surfaces are arranged on the left side and the right side of the mass block of the oscillator, foam 7 is arranged at the position of a side wall 16 of each limiting concave surface in a butting mode, and elastic sheets 6 enabling the oscillator to be suspended in the closed cavity are arranged outside the foam. The limiting concave surface can also be a folding curved surface arranged on the left side surface and the right side surface of the mass block, the end surface of the folding curved surface forms a side surface wall, the part lower than the folding curved surface forms the limiting concave surface, the end surface of the folding curved surface at the left end is arranged backwards, the end surface of the folding curved surface at the right end is arranged forwards, and the foam is arranged along the end surface of the folding curved surface, so that the positioning is convenient; meanwhile, the inclination of foam arranged on the mass block and the inclination of the elastic sheet vibrating arm can be kept consistent, the stability of the device in the vibrating process is guaranteed, the influence of the foam sticking position on the stress of the elastic sheet and the inherent coefficient of the elastic sheet is reduced, and the service life of the product is prolonged.

The stator is composed of a flexible printed circuit board 9 and a coil 8, the flexible printed circuit board is embedded on the inner concave surface of the lower shell, a circuit board through hole 11 is formed in the middle of the flexible printed circuit board, the coil is arranged on the circuit board through hole, the bottom surface of the coil is bonded with the lower shell, the bonding strength of the flexible printed circuit board and the coil is enhanced, a lead wire led out by the coil is led out from the position of the circuit board through hole, the lead wire is conveniently and smoothly led out to an FPCB tin plate, the production process is simplified, and the assembly yield of product parts is improved.

The vibrator is composed of a mass block 2, permanent magnets 4, a metal plate 3, foam, an elastic sheet and a supporting block 5, wherein the two permanent magnets are arranged in the mass block in a penetrating manner, the metal plate embedded on the upper end surface of the mass block covers the permanent magnets, limiting convex blocks protruding outwards are arranged on the front end surface and the rear end surface of the mass block, limiting concave surfaces arranged at the front part and the rear part are respectively arranged on the left end surface and the right end surface of the mass block, and the foam is arranged along the side wall of the limiting concave surface; the elastic sheet is of a C-shaped structure, a vibration arm 17 is formed at the horizontal part of the elastic sheet, clamping sheets 13 are vertically bent at the front end and the rear end of the vibration arm, supporting blocks are arranged on the same end surface of the clamping sheets on the same elastic sheet, the elastic sheet is clamped at the left end and the right end of the mass block through the matching of the elastic sheet and the supporting blocks, and the clamping sheets and the supporting blocks at one end of the elastic sheet are abutted against the limiting convex blocks; the limiting lug boss, the clamping piece and the supporting block are arranged on the limiting lug boss in an abutting mode.

The mass block is a block body, two magnet mounting openings 15 which are arranged along the front and back directions of the block body are arranged in the middle of the block body side by side, and permanent magnets are embedded in the magnet mounting openings.

The working principle of the invention is to convert electromagnetic energy into mechanical property, when the power is on, the coil cuts the magnetic induction line to generate ampere force, and the internal mass block is driven to move, thereby realizing stable X-direction vibration. The structure of the vibrator comprises a vibrator part consisting of a permanent magnet, a metal plate, an elastic sheet and a mass block and a stator part consisting of a lower shell, a Flexible Printed Circuit Board (FPCB) and a coil, wherein the upper shell and the lower shell are matched with each other to form a closed cavity, and the vibrator is suspended in the closed cavity through the elastic sheet so as to realize the stable vibration of the vibrator.

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.