CN110212807B - Asymmetric vibrotactile feedback device - Google Patents
Asymmetric vibrotactile feedback device Download PDFInfo
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- CN110212807B CN110212807B CN201910569121.0A CN201910569121A CN110212807B CN 110212807 B CN110212807 B CN 110212807B CN 201910569121 A CN201910569121 A CN 201910569121A CN 110212807 B CN110212807 B CN 110212807B
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- elastic substrate
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- piezoelectric ceramic
- mass block
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- 239000000758 substrate Substances 0.000 claims abstract description 58
- 239000000919 ceramic Substances 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000009471 action Effects 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 230000005489 elastic deformation Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
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Abstract
The utility model discloses an asymmetric vibration touch feedback device which comprises a shell, wherein a mass block, a laminated piezoelectric ceramic, an elastic substrate and two fixing mechanisms are arranged in the shell. The elastic substrate is bridged between the two fixing mechanisms, the laminated piezoelectric ceramic is fixedly connected to the middle part of the elastic substrate, and the mass block is fixedly arranged on the laminated piezoelectric ceramic. When the elastic substrate is in the initial position, the elastic substrate is in a straight state, and a gap exists between the mass block and the top wall of the shell; when the laminated piezoelectric ceramics receive the driving signal, the laminated piezoelectric ceramics longitudinally stretch to enable the elastic substrate to elastically deform, the length of the elastic substrate which elastically deforms when being stretched is smaller than that of the elastic substrate which elastically deforms when being contracted, the displacement amount of the elastic substrate which is generated when being contracted is larger than that of the elastic substrate which is generated when being stretched, and the mass block is driven to impact the shell under the action of inertia. It has the following advantages: the length difference of elastic deformation is generated when the elastic substrate vibrates up and down, so that the vibration amplitude of the feedback device is amplified, and the vibration effect felt by a human body is more obvious.
Description
Technical Field
The utility model relates to the technical field of man-machine interaction, in particular to an asymmetric vibration touch feedback device.
Background
With the development of technology, products produced by merchants are also focusing more and more on user experience. In our daily life, many products provide haptic feedback devices for haptic confirmation, such as vibration reminding of mobile phones, electronic touch screen sensing feedback, and the like, which improves operability and simplicity of the products in the use process and facilitates user identification.
The traditional haptic feedback device mainly adopts a vibrating motor based on electromagnetic induction effect, and has complex structure, so that the production process flow is complex, the response speed is low, and the product is difficult to have excellent user experience.
Although a haptic feedback vibrator using piezoelectric ceramics as a vibration source appears in the market, the structure is complex, the transmission distance from the piezoelectric ceramics to the mass block is long, the mass block indirectly impacts the shell, the energy loss is large, the amplitude is small, and the vibration effect felt by a human body is not obvious. For example, the Chinese patent grant publication No. CN203084648U and the patent name of the haptic feedback vibrator have complex structure, and after the piezoelectric ceramic directly transmits the vibration to the mass block, the amplitude of the vibration of the mass block is not greatly changed by the amplitude block, so that the vibration amplitude of the whole mechanism is smaller, and the vibration effect felt by a human body is not obvious.
Disclosure of Invention
The present utility model provides an asymmetric vibratory haptic feedback device that overcomes the deficiencies of the haptic feedback vibrator of vibration sources in the background art.
The technical scheme adopted for solving the technical problems is as follows:
the asymmetric vibration touch feedback device comprises a shell, wherein a mass block, a laminated piezoelectric ceramic, an elastic substrate and two fixing mechanisms are arranged in the shell; the two fixing mechanisms are fixedly arranged in the shell; the two side parts of the elastic substrate are fixedly connected with the two fixing mechanisms respectively so that the elastic substrate is bridged between the two fixing mechanisms, the lower end of the laminated piezoelectric ceramic is fixedly connected with the middle part of the top surface of the elastic substrate, and the mass block is fixedly arranged at the upper end of the laminated piezoelectric ceramic; wherein: when the elastic substrate is in a straight state at the initial position, a gap exists between the top end of the mass block and the top wall of the shell; when the laminated piezoelectric ceramic receives the driving signal, the laminated piezoelectric ceramic stretches longitudinally to enable the elastic substrate to deform elastically, the length of the elastic substrate which deforms elastically when the laminated piezoelectric ceramic stretches is smaller than that of the elastic substrate which deforms elastically when the laminated piezoelectric ceramic stretches, the displacement of the elastic substrate which occurs when the laminated piezoelectric ceramic stretches is larger than that which occurs when the laminated piezoelectric ceramic stretches, and the mass block is driven to impact the top wall of the shell under the action of inertia.
In one embodiment: the fixing mechanism comprises a longer fixing block and a shorter fixing block, and the shorter fixing block and the longer fixing block are fixedly connected with the side part of the elastic substrate in an up-down clamping mode.
In one embodiment: the outer side walls of the shorter fixing blocks, the outer side walls of the longer fixing blocks and the side edges of the elastic substrates are aligned.
In one embodiment: the longer fixed block is fixedly arranged on the bottom wall of the shell.
In one embodiment: the section of the laminated piezoelectric ceramic and the section of the mass block are square, and the top surface of the laminated piezoelectric ceramic and the bottom surface of the mass block are partially or completely overlapped and fixedly connected.
Compared with the background technology, the technical proposal has the following advantages:
according to the technical scheme, the elastic substrates are utilized to vibrate up and down, the elastic deformation lengths are different, the vibration amplitude of the feedback device is amplified, and the vibration effect felt by a human body is more obvious. The elastic deformation of the elastic substrate during circulation and the impact of the mass block on the shell can generate a vibration effect, so that the vibration effect felt by a human body is more obvious; the whole device has simple structure and good manufacturability, and the vibration amplitude amplifying function of the vibrator is realized by utilizing the elastic substrate. The cross section of the laminated piezoelectric ceramic and the cross section of the mass block are square, and the top surface of the laminated piezoelectric ceramic and the bottom surface of the mass block are partially or completely overlapped and fixedly connected, so that the transmission effect is better.
Drawings
The utility model is further described below with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram showing an initial state of an asymmetric vibrotactile feedback device according to the present embodiment.
Fig. 2 is a schematic view showing a state in which the mass of the present embodiment hits the top surface of the housing.
Fig. 3 is a schematic view showing a state of the laminated piezoelectric ceramic according to the present embodiment when it is stretched.
Description of the reference numerals: 10-shell, 20-mass block, 30-laminated piezoelectric ceramic, 40-elastic substrate, 50-shorter fixed block, 51-shorter fixed block, 60-longer fixed block and 61-longer fixed block.
Detailed Description
Referring to fig. 1, 2 and 3, an asymmetric vibrotactile feedback device includes a housing 10, a mass 20, a laminated piezoelectric ceramic 30, an elastic substrate 40 and two fixing mechanisms.
The two fixing mechanisms are spaced left and right, and the left side and the right side of the elastic substrate 40 are respectively fixedly connected to the two fixing mechanisms, so that the elastic substrate 40 is bridged between the two fixing mechanisms; the fixing mechanism comprises longer fixing blocks 60 and 61 and shorter fixing blocks 50 and 51, one longer fixing block 60 and one shorter fixing block 50 clamp and fixedly connect the left side part of the elastic substrate 40, the other longer fixing block 61 and the other shorter fixing block 51 clamp and fixedly connect the right side part of the elastic substrate 40, and the elastic substrate 40 is limited by the longer fixing blocks and the shorter fixing blocks because the fixing blocks are divided into the longer fixing blocks and the shorter fixing blocks, and the deformation section length (limited by the longer fixing blocks) of the downward deformation of the elastic substrate 40 is smaller than the deformation section length (limited by the shorter fixing blocks) of the upward deformation of the elastic substrate 40. The concrete structure is as follows: the outer side walls of the longer fixing blocks 60, 61, the outer side walls of the shorter fixing blocks 50, 51, and the side edges of the elastic substrate 40 are aligned. Further, the longer fixing blocks 60, 61 and the shorter fixing blocks 50, 61 are fixedly clamped to the side of the elastic substrate 40 by screws.
The lower end face of the laminated piezoelectric ceramic 30 is fixedly connected to the middle of the top face of the elastic substrate 40, and the upper end face of the laminated piezoelectric ceramic 30 is fixedly connected with a mass block 20. The laminated piezoelectric ceramic 30 and the mass 20 are interposed between two shorter fixed blocks 50, 51.
The housing 10 is in a rectangular box shape, the mass block 20, the laminated piezoelectric ceramic 30, the elastic substrate 40 and the fixing mechanism are all arranged in the housing 10, and the longer fixing blocks 60 and 61 are fixedly arranged in the housing 10. In a specific structure, the longer fixing blocks 60 and 61 are fixed with the bottom surface of the shell 10 by adopting a glue bonding or jogging or pressing mode.
In this embodiment: the specific working mode of the tactile feedback device is as follows:
in the initial position, the elastic substrate 40 is in a straight state, and a gap exists between the top end of the mass block 20 and the top wall of the shell 10;
when the laminated piezoelectric ceramic 30 receives the driving signal, the laminated piezoelectric ceramic 30 frequently expands and contracts in the longitudinal direction due to the inverse piezoelectric effect. When the longitudinal elongation is performed for the first time, the elastic substrate 40 is elastically deformed rapidly from the initial position toward the elongation direction (downward) as the laminated piezoelectric ceramic 30 is elongated; when the laminated piezoelectric ceramic 30 contracts, the elastic substrate 40 elastically deforms in the contraction direction (upward); since the length of elastic deformation of the elastic substrate 40 when the laminated piezoelectric ceramic 30 is elongated is smaller than the length of elastic deformation of the elastic substrate 40 when it is contracted, the amplitude of deformation of the elastic substrate 40 when it is contracted is larger than that when it is elongated, and the mass block 20 is driven to strike the housing 10 under the action of inertia and the elasticity of the elastic substrate 40 itself. The above steps are repeated under the control of the driving signal, and the cycle is repeated.
The mass block 20 can impact the shell 10 and the elastic substrate 40 to generate elastic deformation in different directions to generate vibration effect, and the mass block 20 directly acquires mechanical energy from the laminated piezoelectric ceramic 30, so that the mechanical energy transmission path is short, the energy loss is small, the elastic substrate 40 plays a role in amplifying amplitude, and the vibration effect of the haptic feedback device is further enhanced.
The foregoing description is only illustrative of the preferred embodiments of the present utility model, and therefore should not be taken as limiting the scope of the utility model, for all changes and modifications that come within the meaning and range of equivalency of the claims and specification are therefore intended to be embraced therein.
Claims (1)
1. An asymmetric vibrotactile feedback device, characterized in that: comprises a shell, wherein a mass block, a laminated piezoelectric ceramic, an elastic substrate and two fixing mechanisms are arranged in the shell; the two fixing mechanisms are fixedly arranged in the shell; the two side parts of the elastic substrate are fixedly connected with the two fixing mechanisms respectively so that the elastic substrate is bridged between the two fixing mechanisms, the lower end of the laminated piezoelectric ceramic is fixedly connected with the middle part of the top surface of the elastic substrate, and the mass block is fixedly arranged at the upper end of the laminated piezoelectric ceramic; wherein: when the elastic substrate is in a straight state at the initial position, a gap exists between the top end of the mass block and the top wall of the shell; when the laminated piezoelectric ceramics receive the driving signal, the laminated piezoelectric ceramics longitudinally stretch to enable the elastic substrate to elastically deform, the length of the elastic substrate which is elastically deformed when the laminated piezoelectric ceramics stretch is smaller than the length of the elastic substrate which is elastically deformed when the laminated piezoelectric ceramics shrink, the displacement of the elastic substrate which is generated when the laminated piezoelectric ceramics shrink is larger than the displacement generated when the laminated piezoelectric ceramics stretch, and the mass block is driven to impact the top wall of the shell under the action of inertia; the fixing mechanism comprises a longer fixing block and a shorter fixing block, and the shorter fixing block and the longer fixing block are fixedly connected with the side part of the elastic substrate in an up-down clamping manner; the outer side wall of the shorter fixed block, the outer side wall of the longer fixed block and the side edge of the elastic substrate are aligned; the longer fixing block is fixedly arranged on the bottom wall of the shell; the section of the laminated piezoelectric ceramic and the section of the mass block are square, and the top surface of the laminated piezoelectric ceramic and the bottom surface of the mass block are partially or completely overlapped and fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569121.0A CN110212807B (en) | 2019-06-27 | 2019-06-27 | Asymmetric vibrotactile feedback device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569121.0A CN110212807B (en) | 2019-06-27 | 2019-06-27 | Asymmetric vibrotactile feedback device |
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| CN110212807A CN110212807A (en) | 2019-09-06 |
| CN110212807B true CN110212807B (en) | 2024-02-27 |
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| CN201910569121.0A Active CN110212807B (en) | 2019-06-27 | 2019-06-27 | Asymmetric vibrotactile feedback device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765432B (en) * | 2020-06-04 | 2022-11-15 | 维沃移动通信有限公司 | Motor and electronic device |
| CN112968627A (en) * | 2021-03-29 | 2021-06-15 | 维沃移动通信有限公司 | Vibration device, vibration control method, and electronic apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203084648U (en) * | 2012-12-24 | 2013-07-24 | 瑞声科技（南京）有限公司 | Touch feedback vibrator |
| WO2016173151A1 (en) * | 2015-04-28 | 2016-11-03 | 南京航空航天大学 | Piezoelectric oscillator structure for vibration energy recovery |
| CN109002170A (en) * | 2018-09-29 | 2018-12-14 | 华侨大学 | Haptic feedback devices |
| CN109116993A (en) * | 2018-10-11 | 2019-01-01 | 华侨大学 | Impact type piezoelectric exciting haptic feedback devices |
| CN208819169U (en) * | 2018-09-29 | 2019-05-03 | 华侨大学 | A kind of haptic feedback devices |
| CN209881676U (en) * | 2019-06-27 | 2019-12-31 | 华侨大学 | Asymmetric vibration tactile feedback device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003288158A (en) * | 2002-01-28 | 2003-10-10 | Sony Corp | Mobile apparatus having tactile feedback function |
| CN1445872A (en) * | 2003-03-25 | 2003-10-01 | 西安康鸿信息技术股份有限公司 | Nonsymmetrical driving type piezoelectric ceramic transformer |
| FR3028965B1 (en) * | 2014-11-21 | 2018-03-02 | Dav | HAPTIC RETURN DEVICE FOR MOTOR VEHICLE |
-
2019
- 2019-06-27 CN CN201910569121.0A patent/CN110212807B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203084648U (en) * | 2012-12-24 | 2013-07-24 | 瑞声科技（南京）有限公司 | Touch feedback vibrator |
| WO2016173151A1 (en) * | 2015-04-28 | 2016-11-03 | 南京航空航天大学 | Piezoelectric oscillator structure for vibration energy recovery |
| CN109002170A (en) * | 2018-09-29 | 2018-12-14 | 华侨大学 | Haptic feedback devices |
| CN208819169U (en) * | 2018-09-29 | 2019-05-03 | 华侨大学 | A kind of haptic feedback devices |
| CN109116993A (en) * | 2018-10-11 | 2019-01-01 | 华侨大学 | Impact type piezoelectric exciting haptic feedback devices |
| CN209881676U (en) * | 2019-06-27 | 2019-12-31 | 华侨大学 | Asymmetric vibration tactile feedback device |
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