CN110748598B - Projection device - Google Patents

Projection device Download PDF

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Publication number
CN110748598B
CN110748598B CN201910897488.5A CN201910897488A CN110748598B CN 110748598 B CN110748598 B CN 110748598B CN 201910897488 A CN201910897488 A CN 201910897488A CN 110748598 B CN110748598 B CN 110748598B
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CN
China
Prior art keywords
air cushion
structures
shock
projection apparatus
cushion structures
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CN201910897488.5A
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Chinese (zh)
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CN110748598A (en
Inventor
蔡佳珊
许怀文
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Qisda Optronics Suzhou Co Ltd
Qisda Corp
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Qisda Optronics Suzhou Co Ltd
Qisda Corp
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Application filed by Qisda Optronics Suzhou Co Ltd, Qisda Corp filed Critical Qisda Optronics Suzhou Co Ltd
Priority to CN201910897488.5A priority Critical patent/CN110748598B/en
Publication of CN110748598A publication Critical patent/CN110748598A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/22—Soundproof bodies

Abstract

The invention provides a damping structure and a projection device comprising the same. Shock-absorbing structure contains first shock pad and second shock pad, and the upper and lower surface of first shock pad all is provided with a plurality of air cushion structure, disposes a plurality of bearing structure between a plurality of air cushion structure. The upper and lower surfaces of the second shock pad are both flat surfaces. A projection device with a guide-in damping structure comprises a shell and an optical machine arranged in the shell, wherein the projection device extends a retaining wall structure from a first inner surface of the shell to form a second accommodating space, and the damping structure is limited in the second accommodating space. The shock pad structure is used for isolating the optical machine base and the shell, effectively avoids contact between the optical machine base and the shell and transmission of vibration, prevents vibration of the projection device caused by vibration installed on the optical machine, and achieves the effects of shock absorption and noise reduction.

Description

Projection device
Technical Field
The invention relates to a damping structure and a projection device comprising the same.
Background
The display principle of the current 4K ultra high density (4K UHD) projector is that inside the projector, an optical component can move two or four positions by an extended pixel resolution activator (XPR) such as an electromagnet, so as to achieve the improvement of resolution. However, the continuous movement (or actuation) of the actuating component causes the vibration energy to leak out, and continuous noise (or noise) is generated due to the leaked vibration energy, which causes considerable trouble to the user. Moreover, when the actuating component is integrated into the optical machine shell of the projector to form a module, the abnormal sound generated by the vibration of the actuating component generates a sound box effect in the optical machine shell, so that the abnormal sound becomes louder, and the operation quality of the projector is further seriously influenced.
Disclosure of Invention
The invention aims to provide a projection device, which reduces the transmission of vibration when the projection device is used by means of a damping structure, thereby achieving the effects of damping and reducing noise.
To achieve the above object, the present invention provides a projection apparatus, comprising:
a housing having a first receiving space and a first inner surface,
the optical machine base is arranged in the first accommodating space;
shock-absorbing structure, the butt is between this ray apparatus base and this first internal surface, and this shock-absorbing structure contains:
the first shock pad is provided with a first surface and a second surface which are opposite, the first surface is provided with a plurality of first air cushion structures, the second surface is provided with a plurality of second air cushion structures, and the first air cushion structures are abutted to the optical machine base;
the second shock pad is stacked and abutted between the first shock pad and the first inner surface, the second shock pad is provided with a third surface and a fourth surface which are opposite, the third surface is abutted against the second air cushion structures, and the fourth surface is abutted against the first inner surface.
As an optional technical solution, the plurality of first air cushion structures and the plurality of second air cushion structures are both suction cup type air cushion structures.
As an optional technical solution, the first surface further has a plurality of first supporting structures, and the plurality of first supporting structures are disposed between the plurality of first cushion structures.
As an optional technical solution, the second surface further has a plurality of second supporting structures, and the plurality of second supporting structures are disposed between the plurality of second air cushion structures.
As an optional technical solution, the third surface and the fourth surface are flat surfaces, and the fourth surface is entirely attached to the first inner surface.
As the optional technical scheme, the plurality of first air cushion structures are abutted against the optical machine base and have a first deformation, and the first deformation is 0.5-1 mm.
As an optional technical scheme, the Shore hardness of the first air cushion structures is 65-70 degrees.
As an optional technical scheme, the Shore hardness of the second shock absorption pad is 65-70 degrees.
As an optional technical solution, the projection apparatus extends a retaining wall structure from the first inner surface to form a second accommodating space, and the damping structure is limited in the second accommodating space.
As an optional technical scheme, the retaining wall structure is symmetrically provided with at least two cushions, the at least two cushions abut against the optical machine base, and the Shore hardness of the at least two cushions is 60+/-5 degrees.
Compared with the prior art, the shock absorption structure and the projection device applying the shock absorption structure are provided by the invention. Shock-absorbing structure contains first shock pad and second shock pad, and the upper and lower surface of first shock pad all is provided with a plurality of air cushion structure, disposes a plurality of bearing structure between a plurality of air cushion structure. The upper and lower surfaces of the second shock pad are both flat surfaces. A projection device with a guide-in damping structure comprises a shell and an optical machine arranged in the shell, wherein the projection device extends a retaining wall structure from a first inner surface of the shell to form a second accommodating space, and the damping structure is limited in the second accommodating space. The shock pad structure is used for isolating the optical machine base and the shell, effectively avoids contact between the optical machine base and the shell and transmission of vibration, prevents vibration of the projection device caused by vibration installed on the optical machine, and achieves the effects of shock absorption and noise reduction.
Drawings
Fig. 1 is a partial cross-sectional view of a shock-absorbing structure and a housing of a projection apparatus according to an embodiment of the invention;
fig. 2 is a partial cross-sectional view of a projection apparatus according to an embodiment of the invention;
fig. 3 is a partial schematic view of a housing of a projection apparatus according to an embodiment of the invention;
fig. 4 is a partial schematic view of a damping structure and a housing of a projection apparatus according to an embodiment of the invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Fig. 1 is a partial cross-sectional view of a damping structure and a housing of a projection apparatus according to an embodiment of the invention, and fig. 2 is a partial cross-sectional view of a projection apparatus according to an embodiment of the invention, as shown in fig. 1 and fig. 2, a projection apparatus 10 according to the invention includes a housing 100, a damping structure 200, and an optical bench 300. The opto-mechanical base 300 is disposed in the first accommodating space T of the housing 100, and the shock-absorbing structure 200 is abutted between the opto-mechanical base 300 and the first inner surface 120 of the housing 100. When the opto-mechanical base 300 is disposed in the housing 100 of the projection apparatus 10, the shock-absorbing structure 200 is disposed between the opto-mechanical base 300 and the first inner surface 120 of the housing 100 to play a role of buffering, so as to avoid contact between the opto-mechanical base 300 and the housing 100 of the projection apparatus 10 and transmission of vibration, thereby avoiding generation of noise.
Specifically, the shock absorbing structure 200 includes a first shock absorbing pad 210 and a second shock absorbing pad 220, the first shock absorbing pad 210 has a first surface 211 and a second surface 212 opposite to the first surface 211, the first surface 211 has a plurality of first air cushion structures 2111, and the second surface 212 has a plurality of second air cushion structures 2121. Preferably, the plurality of first air cushion structures 2111 and the plurality of second air cushion structures 2121 are uniformly arranged in an array on the first surface 211 and the second surface 212 of the first shock absorbing pad 210. When the opto-mechanical base 300 is not a plane but has other shapes, such as the stepped shape of the opto-mechanical base 300 in fig. 2, the first surface 211 of the first shock pad 210 can be adjusted adaptively to ensure that the opto-mechanical base 300 abuts against the first air pad structures 2111 of the first shock pad 210; the second shock pad 220 is stacked and abutted between the first shock pad 210 and the first inner surface 120, the second shock pad 220 has a third surface 221 and a fourth surface 222 opposite to each other, and the third surface 221 and the fourth surface 222 are flat surfaces. Third surface 221 abuts a plurality of second air bearing structures 2121 and fourth surface 222 is flush against first inner surface 120.
In practical operation, the plurality of first air cushion structures 2111 and the plurality of second air cushion structures 2121 of the projection apparatus 10 according to the embodiment of the present invention are all suction cup type air cushion structures. The plurality of first air cushion structures 2111 abut against the optical machine base 300, sound waves are transmitted from the optical machine base 300 to the plurality of first air cushion structures 2111 on the first surface 211, the gaps in the plurality of sucker-type first air cushion structures 2111 and the air cushion structure bodies have different propagation speeds for sound, and viscous flow is generated on the first surface 211 of the shock absorption structure 200 to weaken the propagation of the sound waves by utilizing the relative speed caused by the difference of the propagation speeds of the sound waves of the gaps and the air cushion structure bodies. In addition, the cupped taper shape of the plurality of first air pad structures 2111 on the first surface 211 changes the propagation angle of the acoustic wave, while the presence of the plurality of first air pad structures 2111 on the first surface 211 causes the acoustic wave to have a different thickness and air space at each different propagation angle, resulting in a loss of energy during the propagation of the acoustic wave. Meanwhile, the plurality of first air cushion structures 2111 on the first surface 211 abut against the optical engine base 300, and are continuously compressed and rebounded along with the vibration of the optical engine base 300, so that the acoustic wave energy is further lost through the elastic deformation of the plurality of first air cushion structures 2111, and the effects of shock absorption and noise reduction are achieved.
The first shock absorbing pad 210 and the second shock absorbing pad 220 are stacked, the third surface 221 of the second shock absorbing pad 220 abuts against the plurality of second air cushion structures 2121, when the sound wave generated by the vibration of the opto-mechanical base 300 is transmitted to the second surface 212 through the first shock absorbing pad 210, because an air gap exists between the second surface 212 and the third surface 221, the suction cup type second air cushion structures 2121 have the same function as the suction cup type first air cushion structures 2111, and therefore, the effects of shock absorption and noise reduction can be further achieved. The present invention utilizes the design of the first cushion 210 and the second cushion 220, which are stacked, to provide a space for the elastic deformation of the suction cup type second air cushion structure 2121 in the transmission path of the vibration sound wave, thereby further reducing the noise transmission greatly.
In practical operation, according to different vibration degree distributions of the optical engine base 300, the thicknesses of the plurality of first air cushion structures 2111 on the first surface 211 of the first shock absorbing pad 210 can be adaptively adjusted, the thickness of the plurality of first air cushion structures 2111 on the first surface 211 is increased in the abutting region where the vibration degree of the optical engine base 300 is high, and the thickness of the plurality of first air cushion structures 2111 on the first surface 211 is decreased in the abutting region where the vibration degree of the optical engine base 300 is low. As shown in fig. 1, the first surface 211 of the first cushion 210 is not at the same level, the thicknesses of the plurality of first air cushion structures 2111 in the areas of the first surface 211 at different levels may be the same or different, and the thicknesses of the plurality of second air cushion structures 2121 and the plurality of first air cushion structures 2111 may be the same or different.
In operation, first cushion 210 also has a plurality of first support structures 2112 on first surface 211, a plurality of first support structures 2112 disposed between the plurality of first cushion structures 2111, and a plurality of second support structures 2122 on second surface 212 of first cushion 210, and a plurality of second support structures 2122 disposed between the plurality of second cushion structures 2121. The thickness of the plurality of sucker-type first air cushion structures 2111 is greater than or equal to the thickness of the plurality of first support structures 2112; the thickness of the plurality of suction cup-type second air cushion structures 2121 is greater than or equal to the thickness of the plurality of second support structures 2122. The reason for this arrangement is to ensure that the plurality of sucker-type first air cushion structures 2111 abut against the opto-mechanical base 300, and the plurality of sucker-type second air cushion structures 2121 abut against the third surface 221, so as to fully exert the shock-absorbing and noise-reducing effects of the plurality of sucker-type first air cushion structures 2111 and the plurality of sucker-type second air cushion structures 2121. The presence of the plurality of first support structures 2112 and the plurality of second support structures 2122 can ensure the supporting effect of the first cushion 210 while having the shock-absorbing effect.
Comparing fig. 1 and fig. 2, the first cushion structures 2111 of the first cushion 210 of the embodiment of the invention abut against the optical machine base 300 and have a first deformation amount H, and the first deformation amount ranges from 0.5 mm to 1 mm. Too little can lead to playing damping and noise reduction's effect of first deflection, and first deflection is too big, can lead to the air cushion structure to lose the unable resilience of elasticity and influence the shock attenuation effect.
It should be noted that the material used in the vibration damping structure according to the embodiment of the present invention may be any material having the effects of isolation, vibration damping and noise reduction, and the present invention is not limited to a specific type of material. Optionally, the shore hardness of the first air cushion structure 2111 of the first shock absorption pad 210 of the projection apparatus 10 provided in the above embodiment is 65 to 70 degrees, and the shore hardness of the second shock absorption pad 220 is 65 to 70 degrees.
Fig. 3 is a partial schematic view of a housing of a projection apparatus according to an embodiment of the invention, as shown in fig. 3, a housing 100 of a projection apparatus 10 extends from a first inner surface 120 to form a retaining wall structure 110 to form a second accommodating space S, and fig. 4 is a partial schematic view of a damping structure and a housing of a projection apparatus according to an embodiment of the invention, as shown in fig. 4, a damping structure 200 is limited in the second accommodating space S. First, the second cushion 220 and the first cushion 210 are sequentially placed in the second receiving space S, the second receiving space S is adapted to the shape and size of the cushion structure 200 to limit the cushion structure 200 in the housing 100, the height of the retaining wall structure 110 is adjusted according to the height of the first surface 211 of the first cushion 210, generally, the height of the retaining wall structure 110 is lower than the height of the first surface 211, so as to prevent the retaining wall structure 110 from contacting the optical base 300 and damaging the optical base 300.
In practical operation, the retaining wall structure 110 is symmetrically provided with at least two cushions 230, and the at least two cushions 230 abut against the optical mechanical base 300, so as to further prevent the retaining wall structure 110 from contacting the optical mechanical base 300, thereby reducing the influence of the vibration of the optical mechanical base 300 on the projection apparatus 10 and the propagation of the reduced noise. On the other hand, at least two cushions 230 are symmetrically disposed on the retaining wall structure 110, so as to improve the supporting effect on the base 300. Preferably, the at least two bumper pads have a durometer hardness of 60+/-5 degrees.
In summary, the invention provides a damping structure and a projection apparatus using the same. Shock-absorbing structure contains first shock pad and second shock pad, and the upper and lower surface of first shock pad all is provided with a plurality of air cushion structures, causes the loss of sound wave transmission in-process energy. A projection device with a guide-in damping structure comprises a shell and an optical machine arranged in the shell, wherein the projection device extends a retaining wall structure from a first inner surface of the shell to form a second accommodating space, and the damping structure is limited in the second accommodating space. The shock pad structure is used for isolating the optical machine base and the shell, effectively avoids contact between the optical machine base and the shell and transmission of vibration, prevents vibration of the projection device caused by vibration installed on the optical machine, and achieves the effects of shock absorption and noise reduction.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.

Claims (10)

1. A projection device, comprising:
a housing having a first receiving space and a first inner surface,
the optical machine base is arranged in the first accommodating space;
shock-absorbing structure, the butt is between this ray apparatus base and this first internal surface, and this shock-absorbing structure contains:
the first shock pad is provided with a first surface and a second surface which are opposite, the first surface is provided with a plurality of first air cushion structures, the second surface is provided with a plurality of second air cushion structures, and the first air cushion structures are abutted to the optical machine base;
the second shock pad is stacked and abutted between the first shock pad and the first inner surface, the second shock pad is provided with a third surface and a fourth surface which are opposite, the third surface is abutted against the second air cushion structures, and the fourth surface is abutted against the first inner surface.
2. The projection device of claim 1, wherein the first plurality of air cushion structures and the second plurality of air cushion structures are suction cup type air cushion structures.
3. The projection apparatus of claim 1, wherein the first surface further comprises a plurality of first support structures disposed between the plurality of first air cushion structures.
4. The projection apparatus of claim 1, wherein the second surface further comprises a plurality of second support structures disposed between the plurality of second air bearing structures.
5. The projection apparatus of claim 1, wherein the third surface and the fourth surface are flat surfaces, and the fourth surface is integrally bonded to the first inner surface.
6. The projection apparatus according to claim 1, wherein the first air cushion structures abut against the optical engine base and have a first deformation amount, and the first deformation amount is 0.5-1 mm.
7. The projection apparatus according to claim 1, wherein the Shore hardness of the first air cushion structures is 65 to 70 degrees.
8. The projection apparatus according to claim 1, wherein the second shock absorbing pad has a Shore hardness of 65 to 70 degrees.
9. The projection apparatus according to claim 1, wherein the projection apparatus extends a retaining wall structure from the first inner surface to form a second accommodating space, and the damping structure is confined in the second accommodating space.
10. The projection apparatus according to claim 9, wherein the retaining wall structure is symmetrically disposed with at least two cushions abutting against the opto-mechanical base, the at least two cushions having a shore hardness of 60+/-5 degrees.
CN201910897488.5A 2019-09-23 2019-09-23 Projection device Active CN110748598B (en)

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Application Number Priority Date Filing Date Title
CN201910897488.5A CN110748598B (en) 2019-09-23 2019-09-23 Projection device

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CN201910897488.5A CN110748598B (en) 2019-09-23 2019-09-23 Projection device

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CN110748598B true CN110748598B (en) 2021-06-15

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09291969A (en) * 1996-04-25 1997-11-11 Toyo Tire & Rubber Co Ltd Supporting device for active type vibration resistant device
TW200944955A (en) * 2008-02-04 2009-11-01 Canon Kk Exposure apparatus and device manufacturing method
CN103334917A (en) * 2013-03-28 2013-10-02 苏州优德通力电气有限公司 Micro pump with shock absorption and noise reduction functions
KR101761805B1 (en) * 2016-12-19 2017-07-26 엘아이지넥스원 주식회사 Supporting apparatus of electronic equipment for reducing vibration and noise
CN207571447U (en) * 2017-12-15 2018-07-03 山东祈锦光电科技有限公司 A kind of micro projector
CN208252661U (en) * 2018-06-07 2018-12-18 孙绍华 A kind of mechanical equipment operation damping and silencing fixing seat

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09291969A (en) * 1996-04-25 1997-11-11 Toyo Tire & Rubber Co Ltd Supporting device for active type vibration resistant device
TW200944955A (en) * 2008-02-04 2009-11-01 Canon Kk Exposure apparatus and device manufacturing method
CN103334917A (en) * 2013-03-28 2013-10-02 苏州优德通力电气有限公司 Micro pump with shock absorption and noise reduction functions
KR101761805B1 (en) * 2016-12-19 2017-07-26 엘아이지넥스원 주식회사 Supporting apparatus of electronic equipment for reducing vibration and noise
CN207571447U (en) * 2017-12-15 2018-07-03 山东祈锦光电科技有限公司 A kind of micro projector
CN208252661U (en) * 2018-06-07 2018-12-18 孙绍华 A kind of mechanical equipment operation damping and silencing fixing seat

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