Projection device
By setting a detachable plate-shaped counterweight on the actuation module of the projection device, the vibration and noise problems caused by vibration of the actuation module in the DLP pixel jitter technology are solved, and the vibration suppression and noise transmission effect is achieved. .
Patent Information
- Application Number
- CN202420937094.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The actuation module in DLP pixel jitter technology (XPR) causes high vibration and noise from the projection device through vibration, affecting the stability and user experience of the equipment.
A projection device is designed to suppress vibration and noise transmission by providing a plate-shaped counterweight on one side of the actuation module, and using a locking structure between the counterweight and the actuation module. The counterweights of the device are detachably arranged at the decimal position of the actuation module or structural parts. By adjusting the number and position of the counterweights, they can adapt to the actuation modules of different brands to achieve optimal shock absorption and drop Noise effect.
It effectively suppresses vibration and noise transmission of the projection device, improves the stability and user experience of the equipment, and is suitable for XPR actuation modules of different brands.
Smart Images
Figure CN222461875U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a projection device, in particular to a vibration-control projection device. Background Art
[0002] Simply put, the pixel jitter technology (Extended Pixel Resolution Actuator, XPR) of DLP (Digital Light Processing) is to split the pixels first, shift half a pixel at high speed each time, and output it to the projection screen through four superpositions, such as right, down, left, and up as a repeated behavior, which will improve the visual resolution. However, since the XPR actuation module is through vibration, the transmission of vibration and noise is derived, and the vibration and noise will be amplified after passing through the mechanical components, resulting in greater vibration and noise of the entire projection device.
[0003] Therefore, it is necessary to design a novel projection device to overcome the above-mentioned defects. Utility Model Content
[0004] The utility model aims to provide a projection device, which can be suitable for XPRs of different brands without changing the structure of the original projection device to achieve better suppression of vibration and noise transmission.
[0005] To achieve the above-mentioned purpose, the utility model provides a projection device, comprising: a first structural member, having a accommodating space and a first side surface, the first side surface being one side of the accommodating space; an actuating module, located in the accommodating space and close to the first side surface; and a counterweight, located in the accommodating space and close to the first side surface, the counterweight being in the shape of a plate; wherein the counterweight is detachably arranged on the actuating module, and when the counterweight is arranged on the actuating module, the actuating module is located between the first side surface and the counterweight.
[0006] Preferably, the actuating module has a plurality of screw holes, which are locked to the first structural member through a plurality of locking components; wherein the counterweight member has a plurality of studs and a plate surface, and when the counterweight member is disposed on the actuating module, the plate surface faces the actuating module, the plurality of studs protrude from the plate surface and are located at the four corners of the plate surface, and the plurality of studs and the plurality of screw holes lock the counterweight member to the actuating module through the plurality of locking components.
[0007] Preferably, the actuating module has a first projection surface when vertically projected on the first side surface, and the counterweight has a second projection surface when vertically projected on the first side surface, and the first projection surface covers the second projection surface.
[0008] Preferably, when the weight of the first structural member needs to be increased, at least one of the counterweight members is locked onto the actuating module.
[0009] The utility model also provides a projection device, comprising: a first structural member, having a accommodating space and a first side surface, the first side surface being one side of the accommodating space; an actuating module, located in the accommodating space and close to the first side surface; and a counterweight, located outside the accommodating space and detachably arranged on the first structural member; wherein the first structural member has an eccentric position, and when the counterweight is arranged on the first structural member, the counterweight is located at the eccentric position.
[0010] Preferably, the actuating module is located on a first plane, and the intersection of the first plane and the first structural member forms the zero position.
[0011] Preferably, the zero position is at least one of the four corners where the first plane intersects with the first structural member.
[0012] Preferably, the second counterweight has a groove, and when the counterweight is disposed on the first structural member, the groove wraps around at least one of the four corners.
[0013] Preferably, the first structural member has a first outer surface, a second outer surface, a third outer surface and a fourth outer surface, the first outer surface, the second outer surface, the third outer surface and the fourth outer surface form the accommodating space, the first side surface intersects with the first outer surface, the second outer surface, the third outer surface and the fourth outer surface respectively, and the zero position is the intersection of the first plane and at least one of the first outer surface, the second outer surface, the third outer surface and the fourth outer surface of the first structural member.
[0014] Preferably, the first structural member has a screw rod, which is protruded from the zero position of at least one of the first outer surface, the second outer surface, the third outer surface and the fourth outer surface, and the screw rod passes through the counterweight member so that the counterweight member is locked at the zero position.
[0015] Preferably, when the weight of the first structural member needs to be increased, at least one of the counterweight members is locked onto the screw rod.
[0016] Compared with the prior art, an embodiment of the utility model provides a projection device, which includes a first structural member, an actuating module and a counterweight member / counterweight member, wherein the first structural member has a accommodating space and a first side surface, and the first side surface is one side of the accommodating space; the actuating module is located in the accommodating space and close to the first side surface; the counterweight member is located inside / outside the accommodating space and close to the first side surface; wherein the counterweight member / counterweight member is detachably arranged on the actuating module / first structural member, and the counterweight member / counterweight member is detachably arranged on the actuating module / first structural member. In this way, the utility model can be suitable for XPRs of different brands without changing the structure of the original projection device to achieve better suppression of vibration and noise transmission. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of a projection device according to an embodiment of the present invention;
[0018] Figure 2 It is an exploded schematic diagram of a first structural member, a second structural member and a first counterweight in one embodiment of the utility model;
[0019] Figure 3 This is a schematic diagram of a second counterweight located at an odd zero position according to an embodiment of the utility model;
[0020] Figure 4 It is a schematic diagram of multiple sets of second counterweights located at odd zero positions according to another embodiment of the utility model;
[0021] Figure 5 This is an exploded schematic diagram of an embodiment of the utility model in which the second counterweight is not installed in an odd-zero position;
[0022] Figure 6 This is an exploded schematic diagram of another embodiment of the present invention in which multiple sets of second counterweights are not installed in odd-position positions. DETAILED DESCRIPTION
[0023] In order to provide a further understanding of the purpose, structure, features and functions of the present invention, the present invention is described in detail below with reference to the embodiments.
[0024] Reference Figure 1 and Figure 2 As shown, Figure 1 is a schematic diagram of a projection device according to an embodiment of the utility model, Figure 2The exploded schematic diagram of the first structural member, the second structural member and the first counterweight of one embodiment of the utility model. The utility model provides a projection device 100, which includes a first structural member 11, an actuating module 12 and a counterweight 13. The first structural member 11 has a containing space 111 and a first side surface 112, and the first side surface 112 is one side of the containing space 111; the actuating module 12 is located in the containing space 111 and close to the first side surface 112; the counterweight 13 is located in the containing space 111 and close to the first side surface 112, and the counterweight 13 is in a plate shape; wherein the counterweight 13 is detachably arranged on the actuating module 12, and when the counterweight 13 is arranged on the actuating module 12, the actuating module 12 is located between the first side surface 112 and the counterweight 13, so that the utility model can be applied to XPRs of different brands without changing the structure of the original projection device to achieve better suppression of vibration and noise transmission.
[0025] Reference Figure 2 As shown, the first structural member 11 is the optical machine of the projection device 100, and the optical machine may include a light inlet and a light outlet. The light source of the projection device 100 emits light that enters through the light inlet of the optical machine and then is emitted from the light outlet of the optical machine, and then is emitted through the lens of the projection device 100 to form an image. In specific implementation, an actuating module 12 (i.e., an actuating module of XPR) is disposed at the light outlet of the first structural member 11 to adjust the light output jitter to improve the visual resolution.
[0026] Reference Figure 2 As shown, the actuating module 12 is disposed at the first side surface 112 of the first structural member 11. When the actuating module 12 is in operation, the first structural member 11 will vibrate and generate noise due to vibration. In specific implementation, when the actuating module 12 is in operation, the actuating module 12 is disposed at the light outlet of the optical machine to adjust the light output for pixel displacement. The vibration of the actuating module 12 will cause the optical machine to vibrate and generate noise. A plate-shaped counterweight 13 is disposed on one side of the actuating module 12 to suppress the vibration and the noise generated. When actuating modules 12 of different brands are used in projection devices 100 of different models, the vibration and noise generated by different actuating modules 12 are also different. The number of groups of the counterweight 12 is adjusted to achieve the best shock absorption and noise reduction effect.
[0027] Reference Figure 2As shown, the counterweight 13 is plate-shaped and arranged on the actuating module 12, and the counterweight 13 is relatively far from the first side surface 112 of the first structural member 11 of the actuating module 12. In specific implementation, the counterweight 13 has a plurality of studs 131 and a plate surface 132, and the actuating module 12 has a plurality of screw holes 121, and the plurality of screw holes 121 are locked to the first structural member 11 through a plurality of locking components; when the counterweight 13 is arranged on the actuating module 12, the plate surface 132 of the counterweight 13 faces the actuating module 12, and the plurality of studs 131 are protruding from the plate surface 132 and located at the four corners of the plate surface 132, and the plurality of studs 131 and the plurality of screw holes 121 are locked to the actuating module 12 through a plurality of locking components. In a preferred embodiment, a stud is protruded at each of the four corners of the plate surface 132 of the counterweight 13, and the corresponding four corners of the actuating module 12 each have a screw hole. The studs and screw holes are connected one by one through locking accessories, so that the counterweight 13 is locked to the actuating module 12, and the vibration and noise generated by the actuating module 12 are alleviated. The locking accessories can be ordinary screws or shock-absorbing screws, depending on the actual situation, but not limited to this. The material of the counterweight 13 can be one or a combination of soft, metal or composite materials to achieve the effect of shock absorption and noise reduction, depending on the actual situation, but not limited to this.
[0028] Reference Figure 2 As shown, the actuating module 13 has a first projection surface when vertically projected on the first side surface 112, and the counterweight 13 has a second projection surface when vertically projected on the first side surface 112, and the first projection surface covers the second projection surface. In specific implementation, the size of the counterweight 13 is slightly smaller than the size of the actuating module 13, so that the counterweight 13 is prevented from affecting the settings of other dimming components in the optical machine after being installed on the actuating module 12 and does not interfere with the housing of the optical machine.
[0029] Reference Figure 2 As shown, when the weight of the first structural member 11 needs to be increased, at least one counterweight 13 is locked on the actuating module 12. In specific implementation, the first structural member 11 may have multiple groups. When actuating modules 12 of different brands are adapted to first structural members 11 of different models, if the first structural member 11 itself is light, multiple groups of counterweights 13 may be used to lock on the actuating module 12; if the first structural member 11 itself is heavy, one or fewer groups of counterweights 13 may be used to lock on the actuating module 12. The number of counterweights 13 used is calculated as follows:
[0030] The basic moment of inertia mechanics equation is as follows:
[0031] τ=Iα, (Formula 1)
[0032] Where τ is the torque, I is the moment of inertia of the rotating body and α is the angular acceleration.
[0033] α is the angular acceleration, as shown in the following formula:
[0034] We can get ω2=ω1+αt (Formula 2)
[0035] where ω i is the angular velocity, and t is the time. The integration of the angular velocity of ω2 over time gives the following formula 3:
[0036]
[0037] Available
[0038] When ω1=0, that is, the initial angular velocity is stationary, the angular acceleration α is obtained as follows:
[0039]
[0040] The moment of inertia I is as follows:
[0041] When the height is h, the width is w, and the length is d,
[0042] Through the moment of inertia mechanics equation formula 1:
[0043]
[0044] When τ is fixed, if the weight increases, the ratio becomes smaller, that is, ratio = τ / weight. This means that the force received is less affected, and this condition can reduce the transmission of vibration. By changing the number of groups of the counterweight 13 locked to the actuating module 12 or changing the thickness of the counterweight 13 to adjust and adapt to different models of optical machines, better suppression of vibration and noise transmission can be achieved.
[0045] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, Figure 3 This is a schematic diagram of a second counterweight in an embodiment of the utility model being located at an odd zero position. Figure 4It is a schematic diagram of multiple sets of second counterweights located at zero positions in another embodiment of the utility model. The utility model provides a projection device 100, which includes a first structural member 11, an actuating module 12 and counterweights 13', 13", wherein the first structural member 11 has a containing space 111 and a first side surface 112, wherein the first side surface 112 is one side of the containing space 111; the actuating module 12 is located in the containing space 111 and close to the first side surface 112; the counterweight 13 is located outside the containing space 111 and is detachably arranged on the first structural member 11; wherein the first structural member 11 has a zero position, and when the counterweights 13', 13" are arranged on the first structural member 11, the counterweights 13', 13" are located at the zero position, thus, the utility model can be applied to XPRs of different brands without changing the structure of the original projection device to achieve better suppression of vibration and noise transmission.
[0046] Reference Figure 3 and Figure 4 As shown, the first structural member 11 and Figure 2 The first structural member 11 is the same as the first structural member 11 in the projection device 100, and the optical machine may include a light inlet and a light outlet. The light source of the projection device 100 emits light that enters through the light inlet of the optical machine and then is emitted from the light outlet of the optical machine, and then is emitted through the lens of the projection device 100 to form an image. In specific implementation, an actuating module 12 (i.e., an actuating module of XPR) is provided at the light outlet of the first structural member 11 to adjust the light emission jitter to improve the visual resolution.
[0047] Reference Figure 3 and Figure 4 As shown, the actuating module 12 and Figure 2 The actuating module 12 is the same as that in the projection device 100. The actuating module 12 is arranged at the first side surface 112 of the first structural member 11. When the actuating module 12 is in operation, the first structural member 11 will vibrate and generate noise due to vibration. When the actuating module 12 is in operation, the actuating module 12 is arranged at the light outlet of the optical machine to adjust the light output for pixel displacement. The vibration of the actuating module 12 will cause the optical machine to vibrate and generate noise. Vibration and noise generated are suppressed by setting counterweights 13' and 13" at the zero position of the actuating module 12. When actuating modules 12 of different brands are used in projection devices 100 of different models, the vibration and noise generated by different actuating modules 12 are also different. The number of groups of counterweights 13' and 13" is adjusted to achieve the best shock absorption and noise reduction effect. In specific implementation, the actuating module 12 is located in the first plane, and the zero position is formed at the intersection of the first plane and the first structural member 11. The first plane where the actuating module 12 is located intersects with the housing of the optical machine to form an eccentric position. The second accessories 13', 13" are arranged at the eccentric position, which does not affect the original internal layout of the optical machine in the projection device 100 and can better suppress vibration and noise transmission.
[0048] Reference Figure 3 and Figure 5 As shown, Figure 5 This is a schematic diagram of an embodiment of the utility model in which the second counterweight is not installed in the zero position. The zero position is at least one of the four corners where the first plane intersects with the first structural member 11. In specific implementation, the counterweight 13' is disposed at at least one of the four corners where the first plane where the actuating module 12 is located intersects with the first structural member 11. When the counterweight 13' is locked to the first structural member 11, the counterweight 13' is located at at least one of the four corners where the outer surface of the optical machine housing intersects with the first plane. At this time, the zero position of the optical machine and the center of the counterweight 13' are distributed on the same plane of XPR, which can better suppress the vibration and noise transmission of the optical machine. Among them. The counterweight 13' has a groove 141, so that when the counterweight 13' is disposed on the first structural member 1, the groove 141 wraps at least one of the four corners. A better implementation method is to increase the number of counterweights 13' at the zero position when the weight of the first structural member 11 needs to be increased, that is, to increase the counterweights 13' at multiple corners of the four corners where the first plane intersects the first structural member 11, and the grooves 141 of each of the multiple counterweights 13' respectively wrap around the four corners of the outer wall of the optical machine, thereby increasing the weight of the optical machine to better suppress vibration and noise transmission.
[0049] Reference Figure 4 As shown, the first structural member 11 has a first outer surface 1131, a second outer surface 1132, a third outer surface 1133 and a fourth outer surface, the first outer surface 1131, the second outer surface 1132, the third outer surface 1133 and the fourth outer surface form a containing space 111, the first side surface 112 intersects with the first outer surface 1131, the second outer surface 1132, the third outer surface 1133 and the fourth outer surface respectively, and the zero position is that the first plane intersects with at least one of the first outer surface 1131, the second outer surface 1132, the third outer surface 1133 and the fourth outer surface of the first structural member 11. In specific implementation, a counterweight 13" is provided at the intersection of the first plane where the actuating module 13 is located and the four outer surfaces of the optical machine housing. At this time, the zero position of the optical machine and the center of the counterweight 13" are distributed on the same plane of XPR, which can better suppress the vibration and noise transmission of the optical machine.
[0050] Reference Figure 4 and Figure 6 As shown, Figure 6This is a schematic diagram of an exploded view of another embodiment of the utility model in which multiple sets of second counterweights are not installed in the zero position. The first structural member 11 has a screw 113', and the screw 113' is protruding from the zero position of at least one of the first outer surface 1131, the second outer surface 1132, the third outer surface 1133 and the fourth outer surface. The screw 113' passes through the counterweight 13" so that the counterweight 13" is locked in the zero position. In specific implementation, when the weight of the first structural member 11 needs to be increased, at least one counterweight 13" is locked on the screw 113'. In a preferred embodiment, two screws 113' are arranged at the intersection of the first plane of the actuating module 12 and the first outer surface 1131. The counterweight 13" is sheet-shaped and has two through holes. The two screws 113' pass through the two through holes respectively so that the counterweight 13" is arranged on the screw 113', and the counterweight 13" is fixed to the first through two spiral rings. On the outer surface 1131. When the optical machine needs to increase the weight, multiple counterweights 13" are stacked on the first outer surface 1131 in the form of bars, and the specific number of counterweights 13" depends on the actual situation. When the optical machine needs to increase the weight, the counterweight 13" is on the zero position screw 113' of at least one of the first outer surface 1131, the second outer surface 1132, the third outer surface 1133 and the fourth outer surface. The specific zero position is determined according to the actual situation. The number of counterweights 13' and 13" used is also referred to the above formula:
[0051]
[0052] Among them, when τ is fixed, if the weight increases, the ratio becomes smaller, that is, ratio = τ / weight. It means that the force received is less affected, and this condition can reduce the transmission of vibration. By changing the number of weights 13' locked to the four corners of the optical machine housing, or changing the number of weights 13" set on the screw 113', or changing which of the four outer surfaces of the optical machine the weights 13" are set on, the different weights of different models of optical machines can be adjusted to achieve better suppression of vibration and noise transmission.
[0053] In the embodiment of the utility model, the counterweight 13, the counterweight 13', and the counterweight 13" can be provided at the same time, according to the formula:
[0054]
[0055] According to the different weights of different types of optical engines, a combination of multiple counterweights 13, multiple counterweights 13', and multiple counterweights 13" is selected to obtain a better optical engine weight after assembly, so as to achieve the best suppression of vibration and noise transmission.
[0056] To summarize, the projection device provided by the utility model comprises a first structural member, an actuating module and a counterweight member / counterweight member, the first structural member having a accommodating space and a first side surface, the first side surface being one side of the accommodating space; the actuating module is located in the accommodating space and close to the first side surface; the counterweight member is located inside / outside the accommodating space and close to the first side surface; wherein the counterweight member / counterweight member is detachably arranged on the actuating module / first structural member, and the counterweight member / counterweight member is detachably arranged on the actuating module / first structural member. In this way, the utility model can be suitable for XPRs of different brands without changing the structure of the original projection device to achieve better suppression of vibration and noise transmission.
[0057] Although the utility model is described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred embodiments of the utility model and should not be construed as limiting the utility model. In order to clearly describe the required components, the proportions in the schematic drawings do not represent the proportional relationship of the actual components.
[0058] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.
Claims
1. A projection device, characterized in that: include: A first structural member having a containing space and a first side surface, wherein the first side surface is a side of the containing space; An actuating module is located in the accommodating space and close to the first side surface; as well as A counterweight, located in the accommodating space and close to the first side surface, the counterweight being in a plate shape; The counterweight is detachably disposed on the actuating module. When the counterweight is disposed on the actuating module, the actuating module is located between the first side surface and the counterweight.
2. The projection device according to claim 1, characterized in that: The actuating module has a plurality of screw holes, and the plurality of screw holes are locked to the first structural member through a plurality of locking parts; Among them, the counterweight piece has a plurality of studs and a plate surface. When the counterweight piece is set on the actuating module, the plate surface faces the actuating module. The plurality of studs are protruded from the plate surface and are located at the four corners of the plate surface. The plurality of studs and the plurality of screw holes lock the counterweight piece to the actuating module through the plurality of locking components.
3. The projection device according to claim 1, characterized in that: The actuating module has a first projection surface when vertically projected on the first side surface, and the counterweight has a second projection surface when vertically projected on the first side surface, and the first projection surface covers the second projection surface.
4. The projection device according to claim 1, wherein: When the weight of the first structural member needs to be increased, at least one of the weight counterweights is locked onto the actuating module.
5. A projection device, characterized in that: include: A first structural member having a containing space and a first side surface, wherein the first side surface is a side of the containing space; An actuating module is located in the accommodating space and close to the first side surface; as well as A counterweight component, located outside the accommodating space and detachably disposed on the first structural component; Wherein, the first structural member has an eccentric position, and when the counterweight is arranged on the first structural member, the counterweight is located at the eccentric position.
6. The projection device according to claim 5, characterized in that: The actuating module is located on a first plane, and the intersection of the first plane and the first structural member forms the zero position.
7. The projection device according to claim 6, characterized in that: The zero position is at least one of the four corners where the first plane intersects with the first structural member.
8. The projection device according to claim 7, characterized in that: The counterweight component has a groove, and when the counterweight component is arranged on the first structural component, the groove surrounds at least one of the four corners.
9. The projection device according to claim 6, characterized in that: The first structural member has a first outer surface, a second outer surface, a third outer surface and a fourth outer surface, the first outer surface, the second outer surface, the third outer surface and the fourth outer surface form the accommodating space, the first side surface intersects with the first outer surface, the second outer surface, the third outer surface and the fourth outer surface respectively, and the zero position is that the first plane intersects with at least one of the first outer surface, the second outer surface, the third outer surface and the fourth outer surface of the first structural member.
10. The projection device according to claim 9, characterized in that: The first structural member has a screw rod, which is protruding from the zero-angle position of at least one of the first outer surface, the second outer surface, the third outer surface and the fourth outer surface. The screw rod passes through the counterweight component so that the counterweight component is locked at the zero-angle position.
11. The projection device according to claim 10, characterized in that: When the weight of the first structural member needs to be increased, at least one of the weight balancing members is locked onto the screw rod.