CN218162238U - Miniature piezoelectric ceramic linear vibration motor and electronic equipment - Google Patents
Miniature piezoelectric ceramic linear vibration motor and electronic equipment Download PDFInfo
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- CN218162238U CN218162238U CN202222584250.7U CN202222584250U CN218162238U CN 218162238 U CN218162238 U CN 218162238U CN 202222584250 U CN202222584250 U CN 202222584250U CN 218162238 U CN218162238 U CN 218162238U
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- 239000000919 ceramic Substances 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 143
- 238000003466 welding Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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- 238000004806 packaging method and process Methods 0.000 description 1
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Abstract
The utility model discloses a micro piezoelectric ceramic linear vibration motor and an electronic device, wherein the vibration motor comprises a shell, a piezoelectric ceramic piece, a first metal elastic piece, a second metal elastic piece and two mass blocks are arranged in the shell, the center of the first metal elastic piece is fixed with the center of the second metal elastic piece, and an included angle is arranged between the first metal elastic piece and the second metal elastic piece; the piezoelectric ceramic plates are arranged on the first metal elastic pieces, two ends of each first metal elastic piece are fixed with the shell, and two ends of each second metal elastic piece are fixedly connected with the mass blocks on the corresponding sides. The piezoelectric ceramic plate vibrates to drive the first metal elastic sheet to vibrate, the first metal elastic sheet is fixed at two ends to maximize the amplitude of the middle part, the second metal elastic sheet is driven to vibrate and forms resonance with the two mass blocks, and the amplitude is maximized during resonance to drive the whole vibration motor to vibrate. It is thus clear that the utility model discloses have the big and small advantage of amplitude, satisfied electronic equipment's different demands.
Description
Technical Field
The utility model relates to an electronic components technical field especially relates to a miniature piezoceramics linear vibration motor and electronic equipment.
Background
A vibration function is required for handheld electronic equipment such as a smart phone, a watch, a tablet computer and the like, so that the equipment receives a certain signal of action, and feedback is given, for example, an alarm clock function, a confirmation function, a power on/off vibration function and the like of the smart phone need to be vibrated to serve as a feedback signal of the equipment; when the intelligent watch receives a certain signal, the watch gives feedback to improve the received signal or confirm signal, and if the intelligent watch receives short message information, weChat information or telephone information, the intelligent watch needs equipment to give a vibration prompt function.
In the prior art, an electromagnetic rotor motor is commonly used for realizing a vibration function, the electromagnetic rotor motor depends on the electromagnetic action, the rotor rotates to drive the motor and equipment to vibrate, the vibration of the rotor motor is eccentric vibration, the vibration feeling of the rotor motor is cloudy, and the vibration feeling of the rotor motor is not crisp because of the linear motor; in addition, the electromagnetic motor depends on the electromagnetic induction, and the action of the permanent magnet can interfere with other components of a mobile phone, a watch or other electronic devices, so that signals are damaged. In addition, the internal structure of the electromagnetic rotor motor must have structures such as magnets and coils, so that the size is more finely limited, or the vibration is not strong, and the application of the electromagnetic rotor motor in the aspects of miniaturization, lightness and thinness is limited.
To the technical problem, some piezoelectric ceramic vibration motors have appeared, but the existing piezoelectric ceramic vibration motors have small amplitude and large volume, and cannot meet the use requirements.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: the micro piezoelectric ceramic linear vibration motor has the advantages of large amplitude, adjustable vibration sense intensity according to actual needs and small size.
In order to solve the technical problem, the technical scheme of the utility model is that:
a miniature piezoelectric ceramic linear vibration motor comprises a shell, wherein a piezoelectric ceramic piece, a metal elastic piece assembly and two mass blocks are arranged in the shell, the metal elastic piece assembly at least comprises a first metal elastic piece and a second metal elastic piece, the center of the first metal elastic piece and the center of the second metal elastic piece are coaxially and fixedly arranged, and an included angle is formed between the first metal elastic piece and the second metal elastic piece; the piezoelectric ceramic plate is arranged on the first metal elastic sheet, and two ends of the first metal elastic sheet are fixedly connected with the shell; two sides of the second metal elastic sheet are respectively inserted into the two mass blocks, and two ends of the second metal elastic sheet are fixedly connected with the mass blocks on the corresponding sides.
Preferably, the first metal elastic sheet and the second metal elastic sheet are arranged orthogonally.
Preferably, each mass block is provided with a mounting groove, the width of each mounting groove is larger than the thickness of the second metal elastic sheet, and the depth of each mounting groove is matched with the length of one side of the second metal elastic sheet.
Preferably, two ends of the second metal elastic sheet extend outwards respectively and are bent for multiple times to form connecting parts; the shape of the bottom of the mounting groove is matched with that of the connecting part; and the top surface of the connecting part is fixedly connected with the mass block through laser welding.
Preferably, two sides of the mounting groove extend outwards to form an extension groove, and the extension groove penetrates through the mass block.
The preferred mode is that each mass block is provided with an avoidance groove, the avoidance groove is formed in the notch of the mounting groove, and the width of the avoidance groove is larger than the thickness of the first metal elastic sheet.
Preferably, the housing comprises an upper metal cover and a lower metal cover which are buckled together, and two ends of the first metal elastic sheet are fixed on the upper metal cover through welding.
Preferably, the metal upper cover and the metal lower cover are circular or rectangular.
Preferably, each of the masses has the same shape as the housing.
An electronic device comprises the miniature piezoelectric ceramic linear vibration motor.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
because the utility model discloses a miniature piezoceramics straight line vibrating motor and electronic equipment, wherein vibrating motor includes the shell, is provided with piezoceramics piece, metal shrapnel subassembly and two quality pieces in the shell, and the metal shrapnel subassembly includes first metal shrapnel and second metal shrapnel at least, and the center of first metal shrapnel and the center of second metal shrapnel coaxial fixed setting, have the contained angle between first metal shrapnel and the second metal shrapnel; the piezoelectric ceramic plate is arranged on the first metal elastic sheet, and two ends of the first metal elastic sheet are fixedly connected with the shell; two sides of the second metal elastic sheet are respectively inserted into the two mass blocks, and two ends of the second metal elastic sheet are fixedly connected with the mass blocks on the corresponding sides. According to the above, the utility model discloses the fixed setting in both ends of metal elastic piece subassembly, after piezoceramics piece inserts the quadrature current through positive negative lead wire, under the effect of inverse piezoelectric effect, piezoceramics piece produces the vibration, the vibration range at piezoceramics piece middle part is the biggest, drive the vibration of first metal shrapnel, first metal shrapnel is because of both ends are fixed, the middle part amplitude of first metal shrapnel is the biggest, the modulus of second metal shrapnel and first metal shrapnel is different, the second metal shrapnel produces the vibration under the drive of first metal shrapnel, form the resonance together with two quality pieces. When resonance is reached, the vibration amplitude of the two mass blocks is maximum, and the whole vibration motor is driven to vibrate. It can be seen that the utility model discloses a vibrating motor has that the amplitude is big, the vibration intensity can be adjusted according to actual need, and small advantage, has satisfied demands such as electronic equipment's space needs and vibration intensity.
Because first metal shell fragment and second metal shell fragment quadrature set up, the symmetry is improved to rational configuration structure to improve the middle amplitude of metal shell fragment subassembly.
Because each mass block is provided with the mounting groove, the width of the mounting groove is larger than the thickness of the second metal elastic sheet, the depth of the mounting groove is matched with the length of one side of the second metal elastic sheet, and the structure is reasonably configured, so that the second metal elastic sheet and the mass block resonate when the second metal elastic sheet is reliably mounted.
Two ends of the second metal elastic sheet extend outwards respectively and are bent for multiple times to form connecting parts; the groove bottom of the mounting groove is provided with a notch matched with the connecting part; and the top surface of the connecting part is fixedly connected with the mass block through laser welding, so that the area of fixed connection is increased on the premise of ensuring symmetry, and the reliability of connection is ensured.
Because the both sides of mounting groove outwards extend and form the extending groove, the extending groove runs through the quality piece, and inside the connecting portion of second metal shrapnel can followed the extending groove and slided into the quality piece during the equipment, improved the packaging efficiency.
Because each mass block is provided with an avoiding groove, the avoiding groove is arranged at the notch of the mounting groove, the width of the avoiding groove is larger than the thickness of the first metal elastic sheet, and the structure is reasonably configured to ensure that the first metal elastic sheet reliably vibrates.
Because metal upper cover and metal lower cover are circular or rectangle, satisfy the user demand of different electronic equipment to full play local vibrating motor's vibration effect.
Because each mass block is the same as the shape of the shell, the assembly is convenient, and the product volume is reduced.
In summary, the utility model solves the technical problems that the piezoelectric ceramic vibration motor in the prior art has small amplitude and large volume and can not meet the use requirement; the utility model discloses a set up first metal shrapnel and second metal shrapnel's central fixed connection, and the fixed setting in both ends of first metal shrapnel and second metal shrapnel, when piezoceramics piece drives and takes place the vibration, middle amplitude is big, especially takes place resonance with the quality piece, and the amplitude is big when driving whole emergence vibration, and the shape of shell can set up according to in-service use moreover and form, full play submitted little advantage.
Drawings
Fig. 1 is an explosion structure diagram of the micro piezoelectric ceramic linear vibration motor of the present invention;
FIG. 2 is another schematic diagram of the miniature piezoelectric ceramic linear vibration motor according to the present invention;
fig. 3 is an enlarged schematic structural view of a second metal dome of the present invention;
fig. 4 is a schematic structural view of the mass block, the first metal elastic sheet and the second metal elastic sheet;
FIG. 5 is a schematic structural view of the housing in the form of a strip;
in the figure: 1-metal upper cover, 2-metal lower cover, 3-piezoelectric ceramic piece, 4-first metal elastic piece, 5-second metal elastic piece, 50-connecting part, 6-mass block, 60-mounting groove, 600-extending groove, 61-avoiding groove and 7-shell.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, 2 and 3, according to the present invention, the micro piezoelectric ceramic linear vibration motor includes a housing 7, a piezoelectric ceramic plate 3, a metal spring assembly and two mass blocks 6 are disposed in the housing 7, the metal spring assembly includes at least a first metal spring 4 and a second metal spring 5, and may further include a third metal spring, a fourth metal spring, etc., the third metal spring and the fourth metal spring are both coaxially and fixedly disposed with a center of the first metal plate 4, and specific positions of the third metal spring and the fourth metal spring can be set according to actual requirements, and a center of the first metal spring 4 and a center of the second metal spring 5 are coaxially and fixedly disposed, and can be set by welding, so that an included angle is formed between the first metal spring 4 and the second metal spring 5, preferably, the first metal spring 4 and the second metal spring 5 are orthogonally disposed, and the orthogonally disposed so that the first metal spring 4 and the second metal spring are symmetrically disposed, thereby improving vibration linearity; the piezoelectric ceramic piece 3 is arranged on the first metal elastic piece 4, and two ends of the first metal elastic piece 4 are fixedly connected with the shell 7; two sides of the second metal elastic sheet 5 are respectively inserted into the two mass blocks 6, and two ends of the second metal elastic sheet 5 are fixedly connected with the mass blocks 6 on the corresponding sides.
As shown in fig. 1, 2 and 3, according to some embodiments of the present invention, a mounting groove 60 is disposed on each mass block 6, the width of the mounting groove 60 is greater than the thickness of the second metal dome 5, and the depth of the mounting groove 60 is adapted to the length of one side of the second metal dome 5. The two mass blocks 6 are oppositely arranged, the sum of the distance between the two mass blocks 6 and the depth of the mounting groove 60 is the length of the second metal elastic sheet 5, and the structural arrangement ensures that the end part of the second metal elastic sheet 5 is just fixedly connected with the mass block 6 at the bottom of the mounting groove 60. Preferably, both ends of the second metal elastic sheet 5 extend outwards respectively and are bent for multiple times to form the connecting part 50, preferably, the connecting part 50 is a C-shaped connecting part, and the bottom of the mounting groove 60 is matched with the connecting part 50, so that the assembly is facilitated; at this time, the top surface of the connecting part 50 is fixedly connected with the mass block 6 through laser welding, so that the welding area is increased, and the connection reliability is improved.
In a preferred embodiment, two sides of the mounting groove 60 extend outward to form an extension groove 600, and the extension groove 600 penetrates through the mass block 6, so that the second metal elastic sheet 5 can be conveniently mounted in the corresponding mass block 6. In addition, the width of the extension groove 600 may be set to be smaller than the width of the mounting groove 60 at the position where the second metal dome 5 is disposed.
As shown in fig. 1 and 2, according to some embodiments of the present invention, an avoiding groove 61 is disposed on each mass block 6, the avoiding groove 61 is disposed at the notch of the mounting groove 60, and the width of the avoiding groove 61 is greater than the thickness of the first metal dome 4. After the two mass blocks 6 are oppositely arranged, the sum of the gap between the two mass blocks and the width of the avoiding groove 61 is the width of the first metal elastic sheet 4. The two ends of the first metal elastic sheet 4 are fixed, and after vibration occurs, the avoidance groove 61 provides enough vibration space.
As shown in fig. 4 and 5, according to some embodiments of the present invention, the housing 7 includes a metal upper cover 1 and a metal lower cover 2 fastened together, and both ends of the first metal dome 4 are fixed on the metal upper cover 1 by welding. Preferably, the metal upper cover 1 and the metal lower cover 2 are circular or rectangular, and in a preferred scheme, each mass block 6 is the same as the shell 7 in shape, so that the assembly and the processing are convenient, and the vibration performance is also improved. The outer shape of the housing 7 can be designed into a circular shape or a long strip shape according to the shape of the electronic device in practical application so as to give full play to the internal space of the vibration motor, and the size in the thickness direction is small, so that the housing can be more easily installed in the electronic device which is light and thin.
According to the utility model discloses electronic equipment of second aspect embodiment, include the utility model discloses the miniature piezoceramics linear vibration motor of first aspect. The electronic equipment can be hand-held type electronic equipment such as smart mobile phone, wrist-watch, panel computer, because of miniature piezoceramics straight line vibration motor has advantages small, that the amplitude is big, has satisfied the demand of electronic equipment frivolousization and miniaturation, still can be according to actual demand adjustment vibration sense intensity, promotes the experience effect.
The above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, and any modification made within the spirit and principle of the present invention, such as an improvement of a micro piezoelectric ceramic linear vibration motor and an electronic device, should be included in the protection scope of the present invention.
Claims (10)
1. A miniature piezoelectric ceramic linear vibration motor comprises a shell and is characterized in that a piezoelectric ceramic piece, a metal elastic piece assembly and two mass blocks are arranged in the shell, the metal elastic piece assembly at least comprises a first metal elastic piece and a second metal elastic piece, the center of the first metal elastic piece and the center of the second metal elastic piece are coaxially and fixedly arranged, and an included angle is formed between the first metal elastic piece and the second metal elastic piece;
the piezoelectric ceramic plate is arranged on the first metal elastic sheet, and two ends of the first metal elastic sheet are fixedly connected with the shell;
two sides of the second metal elastic sheet are respectively inserted into the two mass blocks, and two ends of the second metal elastic sheet are fixedly connected with the mass blocks on the corresponding sides.
2. The micro piezoelectric ceramic linear vibration motor according to claim 1, wherein the first metal dome and the second metal dome are orthogonally disposed.
3. The micro piezoelectric ceramic linear vibration motor according to claim 1, wherein each mass block is provided with a mounting groove, the width of the mounting groove is larger than the thickness of the second metal dome, and the depth of the mounting groove is matched with the length of one side of the second metal dome.
4. The micro piezoelectric ceramic linear vibration motor according to claim 3, wherein both ends of the second metal dome extend outward and are bent for a plurality of times to form a connection portion;
the shape of the bottom of the mounting groove is matched with that of the connecting part;
and the top surface of the connecting part is fixedly connected with the mass block through laser welding.
5. The micro piezoceramic linear vibration motor according to claim 4, wherein the mounting groove is extended outwardly at both sides thereof to form extension grooves, and the extension grooves penetrate the mass.
6. The micro piezoelectric ceramic linear vibration motor according to claim 3, wherein each mass block is provided with an avoiding groove, the avoiding groove is formed in a notch of the mounting groove, and the width of the avoiding groove is greater than the thickness of the first metal elastic sheet.
7. The micro piezoelectric ceramic linear vibration motor according to any one of claims 1 to 6, wherein the housing includes a metal upper cover and a metal lower cover that are fastened together, and both ends of the first metal elastic piece are fixed to the metal upper cover by welding.
8. The micro piezoceramic linear vibration motor according to claim 7, wherein the metal upper cover and the metal lower cover are circular or rectangular.
9. The micro piezoceramic linear vibration motor of claim 7, wherein each mass is the same shape as the housing.
10. An electronic device comprising the micro piezoelectric ceramic linear vibration motor according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222584250.7U CN218162238U (en) | 2022-09-28 | 2022-09-28 | Miniature piezoelectric ceramic linear vibration motor and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222584250.7U CN218162238U (en) | 2022-09-28 | 2022-09-28 | Miniature piezoelectric ceramic linear vibration motor and electronic equipment |
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| CN218162238U true CN218162238U (en) | 2022-12-27 |
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| CN202222584250.7U Active CN218162238U (en) | 2022-09-28 | 2022-09-28 | Miniature piezoelectric ceramic linear vibration motor and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1009649S1 (en) * | 2021-01-27 | 2024-01-02 | Fuzhou Esun Electronic Co., Ltd | Alarm clock |
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- 2022-09-28 CN CN202222584250.7U patent/CN218162238U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1009649S1 (en) * | 2021-01-27 | 2024-01-02 | Fuzhou Esun Electronic Co., Ltd | Alarm clock |
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