CN205587272U - Piezoelectric vibrator - Google Patents

Abstract

The utility model relates to a piezoelectric vibrator, it includes round machine shell, a quality piece, a metal substrate, two circular piezoelectric patchess and with the fixed pin together of quality piece, substrate and piezoelectric patches, quality piece, substrate and piezoelectric patches are acceptd in the casing jointly, two piezoelectric patchess are attached in the upper and lower surface of substrate, quality piece, substrate and two piezoelectric patchess are equipped with the fixed orifices that the supply and marketing nail passed respectively, the quality piece is fixed in substrate and piezoelectric patches bottom, the substrate lateral margin is fixed in on the casing, piezoelectric patches and quality piece are unsettled in the casing, and this piezoelectric vibrator has the symmetrical balance nature of preferred and higher vibration amount.

Description

Piezoelectric vibrator

Technical field

This utility model relates to a kind of piezoelectric vibrator, particularly relates to the piezoelectric vibrator of a kind of piezoelectric patches with inverse electrical effect.

Background technology

Electronic equipment set manufacturer, particularly portable electric appts manufacturer, always in the experience constantly improving user.Traditional equipment uses vision and audition to provide the user feedback, such as video playback and audio frequency broadcasting etc..In some equipment, motor feedback (such as active force and resistance feedback) and sense of touch feedback (such as vibration, heat energy) can be supplied to the experience that user is more intensive.Specifically, vibrating effect, the haptic effect of vibrating tactile are providing real feedback to cause the sensory experience inside simulation or virtual environment, as the explosive effect inside game machine can cause the judder of subscriber equipment, water droplet then can cause less vibration, the demand of this experience, is the most constantly heated.

Sense of touch feedback is being integrated in mobile phone, individual's equipment such as palm PC, portable game machine, such as some portable game machines can give user with the effect of vibration on stick, additionally, individual's palm PC can also utilize the mode of vibration to carry out the operations such as schedule alarm.

Piezoelectric vibrator is as the main element providing sense of touch to feed back, and its structure is also gradually improved with its application.The piezoelectric vibrator of correlation technique, it includes substrate, the piezoelectric ceramics sheet being placed in substrate two sides and the mass being pasted onto on piezoelectric patches.Along with the progress of science and technology, ultrathin electronic product easy to carry and more aesthetic feeling is pursued by consumer, and this just requires that the electronic devices and components in product will more slimming, miniaturization.

Utility model content

The purpose of this utility model there are provided a kind of piezoelectric vibrator with preferably symmetrical balance and higher vibratory output.

For realizing object defined above, this utility model adopts the following technical scheme that a kind of piezoelectric vibrator, it includes circular casing, one mass, one metal substrate, two circular piezoelectric sheets and by mass, the pin that substrate and piezoelectric patches are fixed together, described mass, substrate and piezoelectric patches are contained in casing jointly, described two piezoelectric patches are attached at the upper and lower surface of substrate, described mass, substrate and two piezoelectric patches are respectively equipped with the fixing hole passed for pin, described mass is fixed on bottom substrate and piezoelectric patches, described substrate lateral margin is fixed in casing, described piezoelectric patches and mass are suspended in casing.

As further improvement of the utility model, described piezoelectric vibrator also includes some enamel-covered wires, and one end of enamel-covered wire is welded on substrate, piezoelectric patches, and the other end extends casing.

As further improvement of the utility model, described mass is set to round pie, and central part is protruding upward, presses on piezoelectric patches.

As further improvement of the utility model, described piezoelectric vibrator also includes upper bracket and the lower carriage being contained in casing, and described upper bracket and lower carriage are respectively set to annular, and the periphery of described substrate is clamped and fixed between upper bracket and lower carriage.

As further improvement of the utility model, the inner side at described lower bearing bracket top is provided with an annular groove, and the periphery of described substrate is contained in this groove, is limited by upper bracket simultaneously and moves up.

As further improvement of the utility model, described casing includes a diapire and the annular sidewall upwards protruded out from diapire periphery, one receiving space is formed between diapire and sidewall, top side wall is provided with one first breach, the first breach that breach is through with receiving space, described lower carriage top is provided with one second breach alignd with the first breach, described substrate includes that substrate has and is positioned at the outwardly afterbody in the circular body portion of receiving space and main body side, and described afterbody is arranged in first, second breach.

As further improvement of the utility model, described piezoelectric patches is circular, and area is less than the area of main part.

As further improvement of the utility model, described pin head surrounding is laser welded with mass.

As further improvement of the utility model, described piezoelectric vibrator also includes the circular cover being downwardly fixed in casing, and described cover plate is provided with a circular hole in the middle part of the top of piezoelectric patches, described cover plate.

This utility model piezoelectric vibrator has preferably symmetrical balance, improves vibratory output.

Accompanying drawing explanation

Fig. 1 is the schematic perspective view of this utility model piezoelectric vibrator.

Fig. 2 is the three-dimensional exploded view of this utility model piezoelectric vibrator.

Fig. 3 is this utility model piezoelectric vibrator profile in central position.

Detailed description of the invention

Refer to shown in Fig. 1 to Fig. 3, this utility model piezoelectric vibrator 100 is flat circle, and it includes metal chassis 10, lower bearing bracket 20, mass 30, metal substrate 40, two circular piezoelectric sheet 50, pin 60, upper bracket 70, circular cover 80 and some enamel-covered wires 90 of a circle.

Casing 10 is cup-like structure, and it includes a diapire 11 and the annular sidewall 12 upwards protruded out from diapire 11 periphery, and a receiving space 13 is formed between diapire 11 and sidewall 12, and sidewall 12 top is provided with one first breach 15, and the first breach 15 is through with receiving space 13.Lower bearing bracket 20, mass 30, substrate 40, two piezoelectric patches 50, pin 60 and upper bracket 70 are contained in this receiving space 13 jointly, and cover plate 80 is downwardly fixed in casing 10, hide the top of receiving space 13.

Lower bearing bracket 20 is set to loop configuration, and top also is provided with one second breach 25, aligns inside and outside the first breach 15 of casing 10.The inner side at lower bearing bracket 20 top is provided with an annular groove 22.

Mass 30 is set to round pie, and central part is protruding upward, and one first fixing hole 35 runs through the central part of mass 30, and mass 30 is suspended in lower casing 20, separates between the two.

Substrate 40 has and is positioned at the outwardly afterbody 42 in the circular body portion 41 of lower bearing bracket 20 and main body 41 side, stretches out in casing 10 via first, second breach 15,25.Main part 41 central authorities are provided with one second fixing hole 45 run through up and down, and the periphery of main part 41 is contained in the annular groove 22 of lower bearing bracket 20, is supported on downwards on lower bearing bracket 20.

Piezoelectric patches 50 has inverse piezoelectric effect, i.e. issues raw mechanically deform at DC Electric Field.Piezoelectric patches 50 is made up of the piezoelectric with piezoelectric effect characteristic, and piezoelectric generally comprises piezoquartz, piezoelectric ceramics, organic polymer piezoelectric.Two piezoelectric patches 50 are attached to substrate 40 main part 41 upper and lower surface respectively, and the area of piezoelectric patches 50 is less than substrate 40 main part 41, and two piezoelectric patches 50 central authorities are provided with one the 3rd fixing hole 55 run through up and down.

Pin 60 is arranged in downwards first, second, third fixing hole 35,45,55, mass 30, substrate 40, piezoelectric patches 50 are fixed together, for increasing fixing intensity and reducing height, present embodiment also uses laser welding process, and pin 60 head surrounding welds together with mass 30.

Upper bracket 70 is annular, is supported on downwards lower bearing bracket 20, supports substrate 40 main part 41 simultaneously and be contained in the periphery in groove 22 so that the periphery of main part 41 is gripped with lower bearing bracket 20 by upper bracket 70, for increasing fixed effect, it is also possible to increases glue and fixes.

Each enamel-covered wire 90 one end is welded on substrate 40, piezoelectric patches 50, and the other end extends piezoelectric vibrator 100, in order to connect external power source, powers to piezoelectric vibrator 100.Utilize enamel-covered wire 90, advantageously reduce and take up room.

Cover plate 80 central authorities are provided with a circular hole 82, it is to avoid when piezoelectric patches 50 vibrates, and collide cover plate 80, cause noise.

This utility model piezoelectric vibrator 100 mass 30, substrate 40, piezoelectric patches 50 use circle, improve symmetrical balance, improve vibratory output.

Although being example purpose, have been disclosed for preferred implementation of the present utility model, but those of ordinary skill in the art is it will be appreciated that in the case of without departing from by scope and spirit of the present utility model disclosed in appending claims, various improvement, to increase and replace be possible.

Claims (9)

1. a piezoelectric vibrator, it includes circular casing, a mass, a metal substrate, two circular piezoelectric sheets and pin mass, substrate and piezoelectric patches being fixed together, described mass, substrate and piezoelectric patches are contained in casing jointly, described two piezoelectric patches are attached at the upper and lower surface of substrate, described mass, substrate and two piezoelectric patches are respectively equipped with the fixing hole passed for pin, it is characterized in that: described mass is fixed on bottom substrate and piezoelectric patches, described substrate lateral margin is fixed in casing, and described piezoelectric patches and mass are suspended in casing.

Piezoelectric vibrator the most according to claim 1, it is characterised in that: described piezoelectric vibrator also includes some enamel-covered wires, and one end of enamel-covered wire is welded on substrate, piezoelectric patches, and the other end extends casing.

Piezoelectric vibrator the most according to claim 1, it is characterised in that: described mass is set to round pie, and central part is protruding upward, presses on piezoelectric patches.

Piezoelectric vibrator the most according to claim 1, it is characterized in that: described piezoelectric vibrator also includes upper bracket and the lower carriage being contained in casing, described upper bracket and lower carriage are respectively set to annular, and the periphery of described substrate is clamped and fixed between upper bracket and lower carriage.

Piezoelectric vibrator the most according to claim 4, it is characterised in that: the inner side at described lower carriage top is provided with an annular groove, and the periphery of described substrate is contained in this groove, is limited by upper bracket simultaneously and moves up.

Piezoelectric vibrator the most according to claim 4, it is characterized in that: described casing includes a diapire and the annular sidewall upwards protruded out from diapire periphery, one receiving space is formed between diapire and sidewall, top side wall is provided with one first breach, the first breach that breach is through with receiving space, described lower carriage top is provided with one second breach alignd with the first breach, described substrate includes that substrate has and is positioned at the outwardly afterbody in the circular body portion of receiving space and main body side, and described afterbody is arranged in first, second breach.

Piezoelectric vibrator the most according to claim 6, it is characterised in that: described piezoelectric patches is circular, and area is less than the area of main part.

Piezoelectric vibrator the most according to claim 1, it is characterised in that: described pin head surrounding is laser welded with mass.

Piezoelectric vibrator the most according to claim 1, it is characterised in that: described piezoelectric vibrator also includes the circular cover being downwardly fixed in casing, and described cover plate is provided with a circular hole in the middle part of the top of piezoelectric patches, described cover plate.