WO2022258064A1 - Projection apparatus - Google Patents
Projection apparatus Download PDFInfo
- Publication number
- WO2022258064A1 WO2022258064A1 PCT/CN2022/098266 CN2022098266W WO2022258064A1 WO 2022258064 A1 WO2022258064 A1 WO 2022258064A1 CN 2022098266 W CN2022098266 W CN 2022098266W WO 2022258064 A1 WO2022258064 A1 WO 2022258064A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rod
- connecting piece
- lifting
- projection device
- pulley
- Prior art date
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 151
- 230000003287 optical effect Effects 0.000 claims abstract description 34
- 230000008602 contraction Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000005096 rolling process Methods 0.000 abstract 5
- 238000010586 diagram Methods 0.000 description 38
- 239000012788 optical film Substances 0.000 description 29
- 238000010008 shearing Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
-
- 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
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
Definitions
- the present disclosure relates to the technical field of projection display, and in particular, to a projection device.
- a projection device mainly includes an optical engine and a projection screen.
- the light outlet of the optical engine faces the projection screen to emit the light beam to the projection screen, and the projection screen is configured to reflect the light beam to realize the display of the picture.
- Some embodiments of the present disclosure provide a projection device, and the projection device includes an optical engine and a projection screen.
- the optical engine is configured to emit light beams to the projection screen, and the projection screen is configured to display projection images.
- the projection screen includes a base, a lifting mechanism, a curtain, a curling mechanism and a control mechanism.
- the lifting mechanism is connected with the base.
- the first side of the screen is connected with the lifting mechanism.
- the curling mechanism is connected to the second side of the screen.
- the control mechanism is arranged on the base and connected to the curling mechanism, and the control mechanism is configured to: control the movement of the curling mechanism, and drive the curling mechanism to roll up the second side, to adjust the pitch angle of the curtain.
- FIG. 1 is a side view of a projection device according to some embodiments
- Fig. 2 is a partial perspective view of the projection device shown in Fig. 1;
- Fig. 3 is a structural diagram of a projection device according to some embodiments.
- Fig. 4 is a structural diagram of an optical engine according to some embodiments.
- Fig. 5 is a structural diagram of another projection screen according to some embodiments.
- Figure 6 is a partial enlarged view of circle B in Figure 5;
- Figure 7 is a partial enlarged view of circle C in Figure 5;
- Fig. 8 is a structural diagram of another projection screen according to some embodiments.
- Fig. 9 is a structural diagram of another projection screen according to some embodiments.
- Fig. 10 is a structural diagram of another projection device according to some embodiments.
- Fig. 11 is a partial perspective view of another projection device according to some embodiments.
- Fig. 12 is a partial perspective view of another projection device according to some embodiments.
- Fig. 13 is an exploded view of the projection device in Fig. 12;
- Figure 14 is a structural diagram of a control mechanism according to some embodiments.
- Fig. 15 is a structural diagram of a projection screen in a retracted state according to some embodiments.
- Fig. 16 is a structural diagram of a projection screen in an unfolded state according to some embodiments.
- Fig. 17 is a structural diagram of a connection structure of a rotatable connection according to some embodiments.
- Fig. 18 is a force analysis diagram of a connection structure of a rotatable connection according to some embodiments.
- Fig. 19 is a structural diagram of another connection structure of a rotatable connection according to some embodiments.
- Fig. 20 is a force analysis diagram of another connection structure of a rotatable connection according to some embodiments.
- Fig. 21 is a structural diagram of another connection structure of a rotatable connection according to some embodiments.
- Fig. 22 is a structural diagram of another projection screen in an unfolded state according to some embodiments.
- Fig. 23 is a structural diagram of another projection screen in a retracted state according to some embodiments.
- Fig. 24 is a partial enlarged view of circle A in Fig. 23;
- Fig. 25 is a structural diagram of a second lead screw according to some embodiments.
- Figure 26 is a block diagram of a conveyor belt assembly according to some embodiments.
- Fig. 27 is a partial structural diagram of a curtain according to some embodiments.
- Fig. 28 is a partial enlarged view at circle D in Fig. 27;
- Figure 29 is a partial structural view of another screen according to some embodiments.
- Fig. 30 is a structural diagram of yet another projection screen according to some embodiments.
- Figure 31 is a partial enlarged view of circle E in Figure 30;
- Figure 32 is a partial enlarged view at the circle F in Figure 30;
- Fig. 33 is a partial enlarged view at circle G in Fig. 30;
- Fig. 34 is a partially enlarged view of circle H in Fig. 30 .
- parallel As used herein, “parallel”, “perpendicular”, and “equal” include the stated situation and the situation similar to the stated situation, the range of the similar situation is within the acceptable deviation range, wherein the The acceptable deviation ranges are as determined by one of ordinary skill in the art taking into account the measurement in question and errors associated with measurement of the particular quantity (ie, limitations of the measurement system).
- “parallel” includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; Deviation within 5°.
- “Equal” includes absolute equality and approximate equality, where the difference between the two that may be equal is less than or equal to 5% of either within acceptable tolerances for approximate equality, for example.
- FIG. 1 is a side view of a projection device according to some embodiments
- FIG. 2 is a partial perspective view of the projection device shown in FIG. 1
- FIG. 3 is a structural diagram of a projection device according to some embodiments.
- the projection device 1000 includes an optical engine 100 , a projection screen 200 and a storage portion 300 .
- the optical engine 100 may be an ultra-short-focus optical engine, and the ultra-short-focus optical engine may be a digital light processing (Digital Light Processing, DLP) optical engine.
- DLP Digital Light Processing
- Fig. 4 is a structural diagram of an optical engine according to some embodiments.
- the optical engine 100 includes a light source 11 , an optical-mechanical system 12 and a lens 13 . Both the light source 11 and the lens 13 are fixedly connected with the optomechanical system 12 .
- the light source 11 is configured to emit light beams to the optomechanical system 12 .
- the lens 13 may be an ultra-short focal projection lens.
- the optomechanical system 12 includes a digital micromirror array (Digital Micromirror Device, DMD) chip and a driving circuit board electrically connected to the DMD chip, and the driving circuit board is configured to provide a driving signal to the DMD chip. Therefore, the DMD chip can modulate the light beam emitted by the light source 11 based on the driving signal, and emit the modulated light beam to the lens 13 , and then emit the light beam to the curtain 202 through the lens 13 to realize the display of the picture.
- DMD Digital Micromirror Device
- Fig. 5 is a structural diagram of another projection screen according to some embodiments
- Fig. 6 is a partial enlarged view of circle B in Fig. 5
- Fig. 7 is a partial enlarged view of circle C in Fig. 5
- Fig. 8 is a structural diagram of yet another projection screen according to some embodiments.
- the curtain 202 includes an optical film 2021 .
- the optical film 2021 includes white plastic screen, gray plastic screen, rollable Fresnel optical screen or flexible black grid screen, etc.
- the optical film 2021 Compared with the traditional curtain 202, the optical film 2021 has higher optical gain, and can restore the brightness and contrast of the light beam as much as possible.
- Fig. 9 is a structural diagram of yet another projection screen according to some embodiments.
- the curtain 202 further includes a flexible carrier 2022 .
- the surface (for example, the back surface) of the optical film 2021 opposite to the surface of the optical film for displaying pictures is fixed (eg, bonded) on the flexible carrier 2022 .
- the material of the flexible carrier 2022 is soft and has a large amount of stretched film, so as to ensure the curling of the curtain 202 and avoid the deformation of the flexible carrier 2022 under the action of external force.
- flexible carrier 2022 is a synthetic cloth.
- the storage part 300 is configured to store the optical engine 100 and the projection screen 200 . In this way, when the projection device 1000 is not in use, the optical engine 100 and the projection screen 200 are stored in the storage portion 300 , which is convenient for saving space.
- the lifting mechanism 203 controls the curtain 202 to unfold, and the optical engine 100 projects light beams onto the curtain 202 to make the curtain 202 display a projected image.
- the receiving portion 300 includes a light-transmitting area 301 and an opening 302
- the optical engine 100 is accommodated in the light-transmitting area 301
- the light beam emitted by the optical engine 100 can pass through the light-transmitting area 301
- the projection screen 200 is accommodated in the opening 302
- the lifting mechanism 203 can control the screen 202 to protrude from the opening 302 and unfold.
- the vertical distance S from the center point of the light-transmitting area 301 to the plane where the screen 202 is unfolded is equal to the product of the projection ratio of the optical engine 100 and the width W of the display area on the screen 202, and the width W of the display area refers to the The horizontal dimension. In this way, it can be ensured that the light beam emitted by the optical engine 100 can be accurately projected onto the display area of the curtain 202 , so as to improve the definition of the projected picture on the curtain 202 .
- the throw ratio is the performance parameter of the optical engine 100 itself, so the throw ratio of the optical engine 100 is related to the selected optical engine 100, that is, if different optical engines are selected, the throw ratio will be different, and then the central point of the light-transmitting area 301 will reach the position after unfolding.
- the vertical distances of the planes where the curtains 202 are located are also different. In this way, the vertical distance from the center point of the light-transmitting area 301 to the plane where the unfolded curtain 202 is located is calculated through the projection ratio of the optical engine 100 and the width of the display area, so as to ensure that the light beam emitted by the optical engine 100 can be completely projected on the screen.
- the display area of the curtain 202 is the performance parameter of the optical engine 100 itself, so the throw ratio of the optical engine 100 is related to the selected optical engine 100, that is, if different optical engines are selected, the throw ratio will be different, and then the central point of the light-transmitting area 301 will reach the position after unfolding.
- Fig. 10 is a structural diagram of another projection device according to some embodiments.
- the accommodating portion 300 in FIG. 10 includes a first accommodating portion 303 and a second accommodating portion 304 .
- the transparent area 301 is disposed on the first accommodating portion 303
- the opening 302 is disposed on the second accommodating portion 304 . That is to say, the accommodating portion 300 in FIG. 10 is a separate piece, while the accommodating portion 300 in FIG. 3 is an integral piece.
- the length of the first receiving part 303 is smaller than the length of the second receiving part 304 .
- the accommodating portion 300 has a cuboid structure, and at this time the length of the first accommodating portion 303 is equal to the length of the second accommodating portion 304 .
- the projection device 1000 will be described mainly in the orientation shown in FIG.
- the height directions of the projection screen 200 are up and down.
- the optical engine 100 is configured to emit light beams to the projection screen 200 .
- the projection screen 200 may include a base 201 , a curtain 202 , a lifting mechanism 203 , a curling mechanism 204 and a control mechanism 205 .
- a first end of the lifting mechanism 203 is fixedly connected to the first side 202A of the screen 202 , and a second end of the lifting mechanism 203 is fixed on the base 201 .
- the lifting mechanism 203 is configured to control the unfolded curtain 202 to receive the light beam emitted by the optical engine 100 to realize the display of the projected image.
- the curling mechanism 204 includes a roll 2041 which can be fixedly connected to the second side 202B of the curtain 202 .
- the drum 2041 is configured to rotate around the second side 202B of the curtain 202 to make the curtain 202 be retracted or unfolded.
- first side 202A of the screen 202 and the second side 202B of the screen 202 are two opposite sides.
- the first side 202A of the curtain 202 is the side of the curtain 202 away from the base 201 (such as the upper side)
- the second side 202B of the curtain 202 is the side of the curtain 202 close to the base 201 (as follows side).
- the optical film 2021 is fixedly connected with the curling mechanism 204 and the lifting mechanism 203 respectively, and the flatness of the optical film 2021 can be improved by controlling and tensioning the optical film 2021 through the lifting mechanism 203 , which can be suitable for ultra-short-focus projection imaging applications.
- the control mechanism 205 is fixed on the base 201 , and the control mechanism 205 is connected with the reel 2041 .
- the control mechanism 205 is configured to control the movement of the reel 2041 to drive the reel 2041 to rotate around the first side 202A of the curtain 202 after the curtain 202 is unfolded.
- the control mechanism 205 in the projection screen 200 can control the roll 2041 to move in a specified direction. Since the first side 202A of the curtain 202 is fixedly connected to the lifting mechanism 203, the lifting mechanism 203 is fixed on the base 201, and the second side 202B of the curtain 202 is fixedly connected to the reel 2041, therefore, the control mechanism 205 controls the reel.
- the control mechanism 205 controls the reel
- the first side 202A of the curtain 202 will not move relative to the base 201, but the second side 202B of the curtain 202 will move relative to the base 201, so that the roll 2041 can
- the screen 202 is driven to rotate around the first side 202A of the screen 202 , thereby adjusting the tilt state of the screen 202 .
- the above specified direction refers to a direction perpendicular to the plane where the screen 202 is located when the screen 202 is not tilted.
- the second side 202B of the curtain 202 will move towards the observer relative to the base 201. Move such that the horizontal distance between the second side 202B of the curtain 202 and the observer is approximately equal to the horizontal distance between the first side 202A of the curtain 202 and the observer.
- the control mechanism 205 drives the reel 2041 to move away from the observer in a designated direction, and the second side 202B of the curtain 202 moves away from the observer relative to the base 201,
- the horizontal distance between the second side 202B of the curtain 202 and the observer is approximately equal to the horizontal distance between the first side 202A of the curtain 202 and the observer.
- the probability of inclination (for example, forward or backward) of the curtain 202 after being unfolded by the lifting mechanism 203 can be effectively reduced, and the probability of problems such as distortion and blurring in the projected picture projected by the optical engine 100 on the curtain 202 can be reduced.
- the display effect of the projected picture on the curtain 202 is improved.
- Fig. 11 is a partial perspective view of another projection device according to some embodiments.
- the control mechanism 205 includes an adjusting rod 2051 and a first slider 2052 connected to the adjusting rod 2051, the first slider 2052 is connected to the reel 2041, and the first slider 2052 is slidably connected to the base 201 connect.
- the length direction of the adjusting rod 2051 intersects the length direction of the reel 2041 , for example, the length direction of the adjustment rod 2051 is perpendicular to the length direction of the reel 2041 .
- the adjusting rod 2051 is configured to drive the first slider 2052 to slide on the base 201 to drive the reel 2041 to move. In this way, after the curtain 202 in the projection screen 200 is unfolded, the adjusting rod 2051 controls the first slider 2052 to slide on the base 201, so that the reel 2041 also moves with the first slider 2052, so that the reel 2041 can go around the screen
- the first side 202A of 202 rotates.
- the adjusting rod 2051 is a first lead screw 2051A, and the first slider 2052 is screwed to the first lead screw 2051A.
- the first lead screw 2051A can be configured to rotate around the central axis of the first lead screw 2051A, so as to drive the first slider 2052 to move in the length direction of the first lead screw 2051A, so that the first slider 2052 is on the base 201 slide.
- the rotation of the first lead screw 2051A around its central axis includes the rotation of the first lead screw 2051A around its own central axis along the first direction and the second direction.
- the first direction is one of clockwise and counterclockwise
- the second direction is the other of clockwise and counterclockwise.
- the first lead screw 2051A rotates around its central axis in the first direction
- the first lead screw 2051A drives the first slider 2052 to move toward the observer in a specified direction
- the movement of the first slider 2052 makes the reel 2041 move along the Moves towards the viewer in the specified direction.
- the horizontal distance between the second side 202B of the curtain 202 and the observer is approximately equal to the distance between the first side 202A of the curtain 202 and the observer. the horizontal distance between them.
- the first lead screw 2051A When the first lead screw 2051A rotates around its central axis in the second direction, the first lead screw 2051A drives the first slider 2052 to move away from the observer in a specified direction, and the movement of the first slider 2052 makes the reel 2041 move along the Move in the specified direction away from the viewer.
- the horizontal distance between the second side 202B of the curtain 202 and the observer is approximately equal to the distance between the first side 202A of the curtain 202 and the observer. the horizontal distance between them.
- first lead screw 2051A rotates clockwise or counterclockwise around its central axis to drive the first sliding block 2052 to move depends on the direction of rotation of the threads of the first lead screw 2051A.
- Fig. 12 is a partial perspective view of another projection device according to some embodiments
- Fig. 13 is an exploded view of the projection device in Fig. 12
- the first slider 2052 includes a first slider body 2052A and an adapter 2052B, and the first slider body 2052A is screwed to the adapter 2052B.
- the adapter 2052B is a lead screw nut.
- the first slider body 2052A includes a first through hole A1.
- the first slider body 2052A is sleeved on the first screw 2051A through the first through hole A1, and the adapter 2052B is sleeved on the first screw 2051A.
- the diameter of the first through hole A1 in the first slider body 2052A is larger than the diameter of the first lead screw 2051A. In this way, the first slider body 2052A can move along the length direction of the first lead screw 2051A driven by the adapter 2052B.
- the first lead screw 2051A When the curtain 202 is unfolded by the lifting mechanism 203 and tilted, the first lead screw 2051A can rotate around its own central axis (for example, clockwise or counterclockwise), and then the first lead screw 2051A can drive the adapter 2052B in the first position. When the lead screw 2051A moves, the adapter 2052B can drive the first slider body 2052A to move on the first lead screw 2051A, so that the first slider body 2052A drives the reel 2041 to move in a specified direction.
- the control mechanism 205 further includes a first driving motor 2053 and a support frame 2054 .
- the supporting frame 2054 is fixedly connected with the base 201 .
- the support frame 2054 includes a horizontal portion 2054A and a vertical portion 2054B, and the support frame 2054 is connected to the base 201 through the horizontal portion 2054A.
- the first driving motor 2053 and the first lead screw 2051A are respectively located on two sides of the vertical portion 2054B of the supporting frame 2054 .
- the first driving motor 2053 is fixedly connected to the vertical portion 2054B of the support frame 2054 .
- first slider body 2052A and the adapter 2052B, and the first drive motor 2053 and the support frame 2054 are fixedly connected by means of screws or the like.
- the first drive motor 2053 includes an output shaft B1 connected to one end of the first lead screw 2051A. The rotation of the first drive motor 2053 can drive the first lead screw 2051A to rotate around its central axis.
- the driving mode of the adjusting rod 2051 can also be manually.
- an adjustment knob is provided at the end of the adjustment rod 2051 away from the first slider 2052 , and the adjustment knob 2051 is driven to rotate by manually rotating the adjustment knob, so that the first slider 2052 is driven to move through the adjustment rod 2051 .
- the control mechanism 205 also includes a coupling 2055 and a bearing 2056 .
- the vertical part 2054B of the support frame 2054 includes a through hole C1, the output shaft B1 of the first driving motor 2053 passes through the through hole C1 to connect with one end of the coupling 2055, and the other end of the coupling 2055 is connected with the first wire
- the one end of the bar 2051A is connected.
- the bearing 2056 is sleeved on the one end of the first lead screw 2051A, and the first lead screw 2051A is rotatably connected with the base 201 through the bearing 2056 .
- the connection between the first lead screw 2051A and the first driving motor 2053 can be realized through the coupling 2055 .
- the whole process of adjusting the inclination state of the curtain 202 by the control mechanism 205 is as follows:
- the first driving motor 2053 rotates, and its power is transmitted to the coupling 2055 through the output shaft of the first driving motor 2053, and the first screw is driven by the coupling 2055.
- 2051A rotates; then, the first lead screw 2051A drives the adapter 2052B to make the adapter 2052B move along the specified direction on the first lead screw 2051A, and the adapter 2052B drives the first slider body 2052A to make the first slider body 2052A Moves in the specified direction on the first lead screw 2051A.
- the first slider body 2052A drives the reel 2041 to move in a specified direction, so as to adjust the tilt state of the screen 202 .
- Figure 14 is a block diagram of a control mechanism according to some embodiments.
- the adjusting rod 2051 is a telescopic rod 2051B
- the control mechanism 205 further includes a control body 2057
- the control body 2057 includes a receiving cavity 2057A.
- a part of the telescopic rod 2051B is located in the receiving chamber 2057A, and an end of the telescopic rod 2051B away from the control body 2057 is fixedly connected to the first slider 2052 .
- the control body 2057 is configured to control the expansion and contraction of the telescopic rod 2051B in the accommodating cavity 2057A, so as to drive the first slider 2052 to slide on the base 201 .
- the telescopic rod 2051B can drive the first slider 2052 to move, so that the reel 2041 also moves with the second sliding block.
- a sliding block 2052 moves, so that the roll 2041 can rotate around the first side 202A of the curtain 202 .
- the telescopic rod 2051B drives the first slider 2052 to move toward the observer in a designated direction, and the movement of the first slider 2052 makes the reel 2041 move toward the observer in a designated direction.
- the telescopic rod 2051B drives the first slider 2052 to move away from the observer along the specified direction, and the movement of the first slider 2052 makes the reel 2041 away from the observer along the specified direction. or move.
- the device composed of the telescopic rod 2051B and the control body 2057 can be a telescopic motor, telescopic pneumatic cylinder or telescopic hydraulic cylinder, etc.
- one of the base 201 and the first slider 2052 in the projection screen 200 includes a bar-shaped protrusion D1
- the other of the base 201 and the first slider 2052 may include a bar-shaped protrusion D1.
- the base 201 includes a bar-shaped protrusion D1
- the first slider 2052 includes a bar-shaped groove E1 matching the bar-shaped protrusion D1.
- the first slider 2052 includes a bar-shaped protrusion D1
- the base 201 includes a bar-shaped groove E1 matching the bar-shaped protrusion D1.
- the drawings in the present disclosure mainly illustrate that the base 201 includes a bar-shaped protrusion D1, and the first slider 2052 includes a bar-shaped groove E1 that matches the bar-shaped protrusion D1.
- the base 201 includes a bar-shaped protrusion D1
- the first slider 2052 includes a bar-shaped groove E1 that matches the bar-shaped protrusion D1.
- At least a part of the strip-shaped protrusion D1 is located in the strip-shaped groove E1. In this way, when the first slider 2052 moves along the length direction of the adjustment rod 2051, the cooperation between the strip-shaped protrusion D1 and the strip-shaped groove E1 is beneficial to improve the sliding stability between the first slider 2052 and the base 201 sex.
- the first slider 2052 in the control mechanism 205 includes a second through hole F1 , and one end of the reel 2041 is located in the second through hole F1 and is rotatably connected to the first slider 2052 . In this way, the curtain 202 can be retracted through the rotatable connection between the roll 2041 and the second through hole F1.
- projection device 1000 includes a control mechanism 205 .
- the projection device 1000 includes two control mechanisms 205 , and the two control mechanisms 205 may be respectively connected to two ends of the roll 2041 .
- the control mechanisms 205 at both ends of the reel 2041 simultaneously drive the reel 2041 to move, so as to drive the reel 2041 to rotate around the first side 202A of the curtain 202 .
- the probability of tilting of the curtain 202 after the curtain 202 is unfolded by the lifting mechanism 203 can be effectively reduced.
- the lifting mechanism 203 includes a crossbeam 2031 and a lifting bracket 2032, the lifting bracket 2032 is connected to one side of the crossbeam 2031 extending along the length direction of the crossbeam 2031, and the other side of the crossbeam 2031 extending along the length direction The side is fixedly connected with the first side 202A of the screen 202 , and the lifting bracket 2032 is configured to control the screen 202 to expand or retract.
- the length of the beam 2031 may be equal to the length of the first side 202A of the curtain 202 . In this way, the beam 2031 can fully control the curtain 202 along the length direction of the beam 2031 , thereby ensuring the smoothness of the curtain 202 .
- Fig. 15 is a structural diagram of a projection screen in a retracted state according to some embodiments
- Fig. 16 is a structural diagram of a projection screen in an unfolded state according to some embodiments.
- the projection screen 200 further includes a supporting body 207 .
- the supporting body 207 is fixedly connected with the base 201 , and the supporting body 207 is configured to carry the lifting mechanism 203 and the curtain 202 .
- the support body 207 may be a support board, a wall surface of a wall body, a support surface of a support cabinet, or a tabletop of a table, and the like.
- the lifting mechanism 203 includes a driving assembly 2033 , a lifting bracket 2032 and a beam 2031 .
- the driving assembly 2033 is connected with the supporting body 207 .
- the lifting bracket 2032 includes a lifting rod 321 and an active rod 322. Both ends of the lifting rod 321 are rotatably connected to the support body 207 and the beam 2031 respectively, and both ends of the active rod 322 are rotatably connected to the drive assembly 2033 and the lifting rod 321 respectively.
- the first side 202A of the curtain 202 is fixedly connected to the beam 2031
- the second side 202B of the curtain 202 is fixedly connected to the curling mechanism 204 .
- the driving assembly 2033 is configured to drive one end (such as the lower end) of the active rod 322 to move to realize the raising or lowering of the other end (such as the upper end) of the active rod 322, and then the active rod 322 drives the elevating rod 321 rises or falls, to realize the rise or fall of beam 2031. In this way, under the cooperation of the curling mechanism 204 and the drive assembly 2033, the curtain 202 can be retracted or unfolded.
- the drive assembly 2033 drives the one end of the active rod 322 to move, so that the active rod 322 The other end descends, and at the same time, the curling mechanism 204 winds around the first side 202A of the curtain 202 to retract the curtain 202 , reducing the occupied space of the projection screen 200 .
- Fig. 17 is a structural diagram of a connection structure of a rotatable connection according to some embodiments
- Fig. 18 is a force analysis diagram of a connection structure of a rotatable connection according to some embodiments.
- the above-mentioned connection structure at the rotatable connection includes a first connection part 1 , a second connection part 2 and a connection shaft 3 .
- the first connecting part 1 is disposed on one side of the second connecting part 2 , for example, the first connecting part 1 and the second connecting part 2 extend away from each other.
- the first connecting piece 1 includes a first connecting hole H1
- the second connecting piece 2 includes a second connecting hole K1
- the connecting shaft 3 passes through the first connecting hole H1 and the second connecting hole I1 to realize the connection between the first connecting piece 1 and the second connecting hole I1.
- the first connecting piece 1 is fixedly connected to one end of the lifting rod 321, the active rod 322, the support body 207, the driving assembly 2033 and the beam 2031 (for example, the lifting rod 321)
- the second connecting member 2 is connected to the lifting rod 321, the active One end of the other (for example, the active rod 322) in the rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031 is fixedly connected to realize the lifting rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031. of two rotatable connections.
- F1 represents the lateral shear force received by the joint of the connecting shaft 3 and the first connecting member 1
- F2 represents the lateral shearing force received by the connecting place of the connecting shaft 3 and the second connecting member 2 force.
- Fig. 19 is a structural diagram of another connection structure of a rotatable connection according to some embodiments
- Fig. 20 is a force analysis diagram of another connection structure of a rotatable connection according to some embodiments.
- At least one of the multiple connection structures at the above-mentioned rotatable connection is a connection structure clamped on both sides, and the connection structure clamped on both sides includes a second connecting member 2.
- the third connecting piece 4 and the connecting shaft 3, the connecting shaft 3 is connected to the second connecting piece 2 and the third connecting piece 4 respectively.
- the third connecting piece 4 includes a third connecting piece body 41 and two sidewalls 42 connected to the third connecting piece body 41 , and the two sidewalls 42 are disposed opposite to one side of the third connecting piece body 41 .
- the second connecting member 2 is disposed between the two side walls 42 .
- Each side wall 42 includes a third connecting hole J1 , and the connecting shaft 3 passes through the second connecting hole I1 and the third connecting hole J1 to realize the rotatable connection between the second connecting member 2 and the third connecting member 4 .
- the second connecting piece 2 is fixedly connected with one end of the lifting rod 321, the active rod 322, the support body 207, the driving assembly 2033 and the beam 2031 (such as the driving assembly 2033), and the third connecting piece 4 is connected with the lifting rod 321, the active One end of the rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031 (such as the active rod 322) is fixedly connected to realize the lifting rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031. of two rotatable connections.
- F2 represents the lateral shear force received by the joint of the connecting shaft 3 and the second connecting member 2
- F3 represents the lateral shearing force received by the connecting place of the connecting shaft 3 and the third connecting member 4 Force
- the direction of F2 is opposite to the direction of F3
- connection structure clamped on both sides also includes a support block 5, the support block 5 includes a fourth connection hole K1, the connection shaft 3 is passed through the fourth connection hole K1, and the support block 5 is located on the third connection piece 4 Between one of the side walls 42 and the second connecting piece 2 .
- One end surface of the second connecting piece 2 is rotatably abutted against the supporting block 5 .
- the support of the second connecting member 2 by the supporting block 5 is beneficial to balance the lateral shearing force on the connecting shaft 3 , thereby prolonging the service life of the projection screen 200 .
- the ends of the two connectors 2 are supported in the grooves on the support block 5 . In this way, the second connecting member 2 can be supported on the support block 5 and relatively rotate with the support block 5 .
- Fig. 21 is a structural diagram of yet another connection structure of a rotatable connection according to some embodiments.
- the third connecting piece 4 in FIG. 21 is a separate piece, while the third connecting piece 4 in FIG. 19 is a single piece.
- the third connecting part 4 includes a first sub-connecting part 43 and a second sub-connecting part 44
- the second connecting part 2 is located between the first sub-connecting part 43 and the second sub-connecting part 44 .
- the second connecting piece 2 is fixedly connected to one end of one of the lifting rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the beam 2031, and the first sub-connecting part 43 and the second sub-connecting part 44 are arranged opposite to the lifting rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the other end of the crossbeam 2031, to realize the rotatable movement of two of the elevating rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031 connect.
- a supporting block 5 may also be provided between the first sub-connecting part 43 and the second connecting part 2, or between the second sub-connecting part 44 and the second connecting part 2, so as to realize alignment through the supporting block 5. The support of the end of the second connecting piece 2 .
- Fig. 22 is a structural diagram of another projection screen in an unfolded state according to some embodiments.
- the lifting rod 321 includes a driven rod 3211 and a supporting rod 3212; the first end of the driven rod 3211 includes a third connecting member 4, and the first end of the supporting rod 3212 It is rotatably connected with the beam 2031, the second end of the support rod 3212 includes the second connecting member 2, and the first end of the driven rod 3211 and the second end of the support rod 3212 form the above-mentioned connection structure clamped on both sides.
- the second end of the driven rod 3211 is rotatably connected to the support body 207 , and the active rod 322 is rotatably connected to the driven rod 3211 .
- connection structure clamped on both sides, so that when the driven rod 3211 and the supporting rod 3212 rotate relatively, the driven rod 3211 and the supporting rod are avoided.
- the situation that the connecting shaft 3 between 3212 is subject to lateral shear force is beneficial to slow down the wear of the connecting shaft 3 here.
- the first end of the driven rod 3211 includes a support block 5 , and the second end of the support rod 3212 is rotatably abutted against the support block 5 .
- the support of the support rod 3212 by the support block 5 can prevent the connection shaft 3 between the driven rod 3211 and the support rod 3212 from being subjected to lateral shearing force, thereby prolonging the service life of the lifting rod 321 .
- the active rod 322 includes a first power rod 3221 and a second power rod 3222; the first end of the first power rod 3221 and the first end of the second power rod 3222 are located respectively from The two opposite sides of the moving rod 3211, i.e. the first end of the first power rod 3221 and the first end of the second power rod 3222 jointly form the third connecting part 4 (i.e.
- the driven rod 3211 forms the first Two connecting pieces 2
- the first end of the first power rod 3221, the first end of the second power rod 3222 and the part of the driven rod 3211 form the above-mentioned connection structure clamped on both sides, the first Both the second end of the power rod 3221 and the second end of the second power rod 3222 are rotatably connected to the driving assembly 2033 .
- the active rod 322 includes a third power rod 3224 , a fourth power rod 3225 and an auxiliary rod 3223 .
- the first end of the auxiliary rod 3223 forms the third connecting piece 4 (i.e. an integral part), a part of the supporting rod 3212 is located between the two side walls 42 of the third connecting member 4, and the part of the supporting rod 3212 forms the second
- the connecting piece 2 the first end of the auxiliary rod 3223 and the part of the supporting rod 3212 form a connection structure clamped on both sides.
- the first end of the third power rod 3224 and the first end of the fourth power rod 3225 are respectively located on opposite sides of the second end of the auxiliary rod 3223, that is, the first end of the third power rod 3224 and the end of the fourth power rod 3225.
- the first ends together form the third connecting piece 4 (i.e. split)
- the second end of the auxiliary rod 3223 forms the second connecting piece 2
- the first end of the third power rod 3224, the first end of the fourth power rod 3225 and the second end of the auxiliary rod 3223 form a connection structure clamped on both sides.
- the second end of the third power rod 3224, the second end of the fourth power rod 3225 and the driving assembly 2033 are rotatably connected.
- the driven rod 3211 is located between the third power rod 3224 and the fourth power rod 3225, and a part of the third power rod 3224 and a part of the fourth power rod 3225 jointly form the third connecting part 4 (ie, a split part).
- a part of the rod 3211 forms the second connecting member 2, and the part of the third power rod 3224, the part of the fourth power rod 3225 and the part of the driven rod 3211 form a connection clamped on both sides. structure.
- the third power rod 3224 and the driven rod 3211, and the fourth power rod 3225 and the driven rod 3211 form an X-shaped structure
- the auxiliary rod 3223 and the support rod 3212 form a ⁇ -shaped structure, and pass through the third
- the clamping of both sides of the driven rod 3211 by the power rod 3224 and the fourth power rod 3225 prevents the connecting shaft 3 between the third power rod 3224, the fourth power rod 3225 and the driven rod 3211 from being subjected to lateral shearing
- the condition of the force is conducive to slowing down the wear of the connecting shaft 3 here, and clamping the two sides of the support rod 3212 by the first end of the auxiliary rod 3223, avoiding the position between the first end of the auxiliary rod 3223 and the support rod 3212
- the connecting shaft 3 is subject to lateral shear force, it is beneficial to slow down the wear of the connecting shaft 3 here.
- the supporting body 207 includes a plate body 2071
- the lifting mechanism 203 is arranged on the side surface (such as the upper surface) of the plate body 2071 away from the ground
- the projection screen 200 includes two base plates.
- Seats 201 , two bases 201 are arranged on the upper surface of the board body 2071 and located at both ends of the board body 2071 in the length direction, and the two bases 201 are perpendicular to the board body 2071 .
- both ends of the curling mechanism 204 are respectively connected to the two bases 201 , the driving assembly 2033 is fixedly connected to the plate body 2071 , and the second end of the lifting rod 321 is rotatably connected to the plate body 2071 .
- FIG. 23 is a structural view of another projection screen in a retracted state according to some embodiments;
- FIG. 24 is a partially enlarged view of circle A in FIG. 23 .
- the drive assembly 2033 includes a second drive motor 311 , a conveyor belt assembly 312 , a second lead screw 313 and a plurality of second sliders 314 , and the second lead screw 313 is connected to the support
- the body 207 is rotatably connected, the plurality of second sliders 314 are screwed to the second lead screw 313, the plurality of second sliders 314 correspond to the plurality of elevating brackets 2032 one by one, the second end of the active rod 322 corresponds to the corresponding first
- the two sliders 314 are rotatably connected.
- the second driving motor 311 is configured to drive the second screw 313 to rotate.
- the output shaft 3111 of the second driving motor 311 is in driving connection with the second lead screw 313 through the conveyor belt assembly 312 .
- the second drive motor 311 drives the curtain 202 to rise or fall as follows:
- the second lead screw 313 is rotatably connected to the support body 207, so the second drive motor 311 can drive the second lead screw 313 to rotate in situ through the conveyor belt assembly 312 after the second drive motor 311 is started, and the second lead screw 313 drives the second slider 314 to rotate, thereby Make the second slide block 314 move on the second lead screw 313, drive the second end of the active rod 322 to move synchronously by the second slide block 314, to realize the rising or falling of the other end of the active rod 322; When rising or falling, the active rod 322 can drive the lifting rod 321 to rise or fall synchronously, so as to realize the rise or fall of the beam 2031 , and then realize the rise or fall of the curtain 202 .
- the output shaft 3111 of the second driving motor 311 is parallel to the length direction of the second leading screw 313.
- the second driving motor 311 is positioned at the side (lower side) near the ground of the second leading screw 313.
- the overall length of the mechanism 203 realizes the miniaturization of the projection screen 200 .
- Figure 25 is a structural diagram of a second lead screw according to some embodiments.
- the second lead screw 313 is one piece, and the helical directions of the threads at both ends of the second lead screw 313 are opposite.
- the conveyor belt assembly 312 can be connected to the end of the second lead screw 313 or the middle position of the second lead screw 313; or , the second lead screw 313 is a split piece, as shown in Figure 25, the second lead screw 313 includes a first sub-screw 3131 and a second sub-screw 3132, at this time the conveyor belt assembly 312 is simultaneously connected with the first sub-screw 3131 and the second sub-screw 3132 are connected at positions close to each other, that is, the conveyor belt assembly 312 is connected at the position between the first sub-screw 3131 and the second sub-screw 3132, after the connection, the first sub-screw 3131 and the second sub-screw 3131
- the screw threads of the two sub-leading screws 3132 are in opposite directions.
- the second lead screw 313 may include more than two sub-screws, for example, the second lead screw 313 includes four sub-screws, six sub-screws, or eight sub-screws.
- the driving assembly 2033 also includes a guide rod 315, the guide rod 315 is fixed on the base 201, and a plurality of second sliders 314 are slidably connected with the guide rod 315, which ensures the stability of the second slider 314 sliding sex.
- the conveyor belt assembly 312 is configured to decelerate the rotation speed of the second driving motor 311 to reduce the rotation speed of the second lead screw 313 .
- the conveyor belt assembly 312 includes at least one stage of pulley assembly, each stage of pulley assembly includes a driven pulley, a driving pulley, and a conveyor belt respectively connected to the driving pulley and the driven pulley, the diameter of the driving pulley is smaller than the diameter of the driven pulley, and two adjacent stages In the pulley assembly, the driven pulley of one stage of the pulley assembly is coaxially fixedly connected with the driving pulley of the other stage of the pulley assembly.
- Figure 26 is a block diagram of a conveyor belt assembly according to some embodiments.
- the first pulley 3122 and the second pulley 3123 are respectively rotatably connected to the gearbox body 3121, the first pulley 3122 is fixedly connected to the output shaft 3111 of the second driving motor 311, and the third pulley 3124 is sleeved on the second wire On the rod 313, and fixedly connected with the second lead screw 313.
- the second pulley 3123 includes a first circular groove 3123A and a second circular groove 3123B, and the diameter of the first circular groove 3123A is larger than that of the second circular groove 3123B.
- the first conveyor belt 3125 is set on the first circular groove 3123A of the second pulley 3123 and the first pulley 3122
- the second conveyor belt 3126 is set on the second circular groove 3123B of the second pulley 3123 and the third pulley 3124 .
- the first pulley 3122 is used as the driving pulley of the first-stage pulley assembly
- the first circular groove 3123A on the second pulley 3123 is used as the driven pulley of the first-stage pulley assembly
- the second circular groove on the second pulley 3123 is 3123B is used as the driving pulley of the second-stage pulley assembly
- the third pulley 3124 is used as the driven pulley of the second-stage pulley assembly
- the outer diameter of the first pulley 3122 is smaller than the diameter of the first circular groove 3123A of the second pulley 3123
- the outer diameter of the second circular groove 3123B of the second pulley 3123 is smaller than the diameter of the third pulley 3124 .
- the rotation speed of the second driving motor 311 can be reduced through the two-stage pulley assembly, thereby reducing the rotation speed of the second lead screw 313 .
- the conveyor belt assembly 312 drives the second lead screw 313 to rotate, in order to avoid slipping between each pulley and the corresponding conveyor belt, as shown in FIG. It is movably connected with the gearbox body 3121 , and the limiting member 3127 is pressed against the surface of the first conveyor belt 3125 or the second conveyor belt 3126 away from the corresponding pulley. In this way, by tightening the first conveyor belt 3125 or the second conveyor belt 3126 through the limiting member 3127, slipping between the conveyor belt and the corresponding pulley can be avoided.
- Fig. 27 is a partial structural view of a curtain according to some embodiments
- Fig. 28 is a partial enlarged view at circle D in Fig. 27 .
- the dimension of the optical film 2021 along the length direction of the curling mechanism 204 is smaller than the dimension of the flexible carrier 2022 along the length direction of the curling mechanism 204 . In this way, when the optical film 2021 is fixed on the flexible carrier 2022, the edge of the optical film 2021 will not be located outside the flexible carrier 2022, thereby improving the fixing efficiency of the optical film 2021.
- the dimension of the optical film 2021 along the length direction of the curling mechanism 204 may also be equal to the dimension of the flexible carrier 2022 along the length direction of the curling mechanism 204 . In this way, when the optical film 2021 is fixed, it is convenient to align the edge of the optical film 2021 with the edge of the flexible carrier 2022 , and the display picture can be the entire curtain 202 , thereby improving the picture display effect of the curtain 202 .
- the projection screen further includes a plurality of tensioning mechanisms 206 , and two ends of each tensioning mechanism 206 in the plurality of tensioning mechanisms 206 are respectively fixedly connected to the curling mechanism 204 and the beam 2031 .
- a part of each tensioning mechanism 206 (such as the middle part except two ends) is fixed with the screen 202, and the orthographic projection of the tensioning mechanism 206 on the plane where the screen 202 is located is located on the screen 202, thereby avoiding the tensioning mechanism 206
- the exposed middle part of the projection screen improves the aesthetics of the projection screen.
- the foregoing embodiment can make the curtain 202 in a taut state by the tension mechanism 206 when the curtain 202 is unfolded, so as to avoid deformation of the curtain 202.
- the stress parallel to the first side 202A of the curtain 202 experienced by the curtain 202 can be distributed among the multiple tensioning mechanisms 206 , reducing the possibility of deformation of the curtain 202 .
- the length direction of the tensioning mechanism 206 is perpendicular to the first side 202A of the curtain 202, so that the stress parallel to the first side 202A of the curtain 202 that the curtain 202 is subjected to can be largely dispersed in the tension. On the tightening mechanism 206, the stress that the curtain 202 bears is reduced.
- the tensioning mechanism 206 may use a material with a relatively high tensile modulus.
- the tensioning mechanism 206 is a fishing line, a nylon line, or a steel wire rope. In this way, the bending deformation of the tensioning mechanism 206 can be avoided, and the tensioning effect of the tensioning mechanism 206 on the screen 202 can be improved.
- one side surface (for example, the front side) of the optical film 2021 is configured to display a picture
- the tensioning mechanism 206 is arranged on the side of the optical film 2021 and the one side of the optical film 2021.
- the surface opposite to the side surface (for example, the back surface), or the tension mechanism 206 and the optical film 2021 are integrally structured.
- FIG. 29 is a partial structural view of another screen according to some embodiments.
- connection manner between the tensioning mechanism 206 and the optical film 2021 may be as follows: the tensioning mechanism 206 is fixedly connected to the back of the optical film 2021 by bonding or the like. Or, as shown in FIG. 29 , the curtain 202 further includes an accommodating pocket 2023, the accommodating pocket 2023 is arranged on one side of the optical film 2021 perpendicular to the first side 202A, and the tensioning mechanism 206 is passed through the accommodating pocket. 2023, to realize the fixation of the middle part of the tensioning mechanism 206. Certainly, the connection manner between the tensioning mechanism 206 and the optical film 2021 is not limited to this.
- the middle part of the tensioning mechanism 206 can be arranged on the flexible carrier 2022, of course, also The middle part of the tensioning mechanism 206 can be disposed on the back of the optical film 2021 .
- the middle part of the tensioning mechanism 206 can be fixedly connected with the flexible carrier 2022 .
- the accommodation pocket 2023 is disposed on the back of the flexible carrier 2022 , and the tightening mechanism 206 is passed through the accommodation pocket 2023 to fix the middle part of the tension mechanism 206 .
- two sides of the flexible carrier 2022 perpendicular to the length direction of the first side 202A of the curtain 202 are folded along the back of the flexible carrier 2022 and fixed to the back of the flexible carrier 2022 to obtain the accommodating pocket 2023 .
- the accommodating pocket 2023 is located on the back of the flexible carrier 2022. In this way, not only the accommodating pocket 2023 can be avoided from being exposed, but also the tensioning mechanism 206 can be avoided, which improves the overall aesthetics of the projection screen.
- the tensioning mechanism 206 When the tensioning mechanism 206 is fixedly connected to the flexible carrier 2022, the tensioning mechanism 206 is located at the back of the flexible carrier 2022, that is, the tensioning mechanism 206 is fixedly connected to the back of the flexible carrier 2022, or the tensioning mechanism 206 is fixed on the flexible carrier 2022 front.
- the tensioning mechanism 206 can also be integrated with the flexible carrier 2022 .
- the material of the tension mechanism 206 is a transparent material.
- tensioning mechanism 206 is a transparent fishing line.
- Fig. 30 is a structural diagram of another projection screen according to some embodiments
- Fig. 31 is a partial enlarged view of circle E in Fig. 30
- Fig. 32 is a partial enlarged view of circle F in Fig. 30
- Fig. 33 is a partial enlarged view of circle F in Fig. 30
- the partial enlarged view at the middle circle G, and Fig. 34 is the partial enlarged view at the middle circle H in Fig. 30 .
- the multiple tensioning mechanisms 206 include a first tensioning member 2061 and a second tensioning member 2062, and the first tensioning member 2061 is arranged on the curtain 202 and the first tensioning member 2062.
- side 202A vertical side for example, the third side 202C
- the second tension member 2062 is arranged on the other side of the curtain 202 perpendicular to the first side 202A (for example, the fourth side 202D )
- the third side 202C is opposite to the fourth side 202D.
- the third side 202C of the screen 202 can be tightened by the first tensioning member 2061
- the fourth side 202D of the curtain 202 can be tightened by the second tensioning member 2062
- the third side 202D of the curtain 202 can be tightened by the first tensioning member 2061.
- Cooperating with the second tensioning member 2062 can disperse the force on the screen 202 in the direction parallel to the first side 202A, thereby ensuring the tensioning effect of the multiple tensioning members 4 on the screen 202 .
- first tension member 2061 and the second tension member 2062 distribute the force on the third side 202C and the fourth side 202D of the curtain 202, in order to better ensure that the first tension member 2061 and the second tension
- the tensioning effect of the tensioning member 2062 on the curtain 202 in the direction parallel to the first side 202A, as shown in FIGS. 30 to 34 , the first end of the first tensioning member 2061, the The first ends are respectively connected to the beams 2031.
- the first ends of the first tensioning members 2061 are biased toward one end of the corresponding beams 2031, and the second tensioning members
- the first end of 2062 is biased toward one end of the corresponding beam, that is, the distance between the end of the first tensioning member 2061 connected to the beam and the end of the second tensioning member 2062 connected to the beam is greater than the length of the first side 202A of the curtain 202 .
- the second end of the first tensioning member 2061 and the second end of the second tensioning member 2062 are connected to the curling mechanism 204.
- the first tensioning The second end of the member 2061 is biased toward one end of the corresponding curling mechanism 204, and the second end of the second tensioning member 2062 is biased toward one end of the corresponding curling mechanism 204, that is, the first tensioning member 2061 is connected to one end of the curling mechanism 204 and the second tensioning member 2061.
- the distance between the ends of the two tension members 2062 connected to the curling mechanism 204 is greater than the length of the second side 202B of the curtain 202 .
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
Some embodiments of the present disclosure provide a projection apparatus. The projection apparatus comprises an optical engine and a projection screen. The optical engine is configured to emit a light beam to the projection screen and the projection screen is configured to display a projection picture. The projection screen comprises a base, a lifting mechanism, a screen, a rolling mechanism and a control mechanism. The lifting mechanism is connected to the base; a first side edge of the screen is connected to the lifting mechanism; the rolling mechanism is connected to a second side edge of the screen; and the control mechanism is connected to the base and the rolling mechanism, and the control mechanism is configured to control movement of the rolling mechanism, and drive the rolling mechanism to roll up the second side edge so as to adjust a pitch angle of the screen.
Description
本申请要求于2021年06月11日提交的、申请号为202121316465.X的中国专利申请的优先权;于2021年07月09日提交的、申请号为202121565316.7的中国专利申请的优先权;于2021年09月27日提交的、申请号为202111136349.4的中国专利申请的优先权;于2021年09月27日提交的、申请号为202122354211.3的中国专利申请的优先权,其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with application number 202121316465.X filed on June 11, 2021; the priority of the Chinese patent application with application number 202121565316.7 filed on July 09, 2021; Priority to Chinese Patent Application No. 202111136349.4 filed on September 27, 2021; Priority to Chinese Patent Application No. 202122354211.3 filed on September 27, 2021, the entire contents of which are hereby incorporated by reference In this application.
本公开涉及投影显示技术领域,尤其涉及一种投影装置。The present disclosure relates to the technical field of projection display, and in particular, to a projection device.
随着科技的不断发展,投影装置越来越多地应用于人们的工作和生活中。目前,投影装置主要包括光学引擎和投影屏幕。光学引擎的出光口朝向投影屏幕,以将光束出射至投影屏幕,投影屏幕被配置为反射该光束,以实现画面的显示。With the continuous development of science and technology, projection devices are increasingly used in people's work and life. Currently, a projection device mainly includes an optical engine and a projection screen. The light outlet of the optical engine faces the projection screen to emit the light beam to the projection screen, and the projection screen is configured to reflect the light beam to realize the display of the picture.
发明内容Contents of the invention
本公开一些实施例提供一种投影装置,所述投影装置包括光学引擎和投影屏幕。所述光学引擎被配置为将光束出射至所述投影屏幕,所述投影屏幕被配置为显示投影画面。所述投影屏幕包括基座、升降机构、幕布、卷曲机构和控制机构。所述升降机构与所述基座连接。所述幕布的第一侧边与所述升降机构连接。所述卷曲机构与所述幕布的第二侧边连接。所述控制机构设置在所述基座上,且与所述卷曲机构连接,所述控制机构被配置为:控制所述卷曲机构移动,并带动所述卷曲机构卷起所述第二侧边,以调节所述幕布的俯仰角度。Some embodiments of the present disclosure provide a projection device, and the projection device includes an optical engine and a projection screen. The optical engine is configured to emit light beams to the projection screen, and the projection screen is configured to display projection images. The projection screen includes a base, a lifting mechanism, a curtain, a curling mechanism and a control mechanism. The lifting mechanism is connected with the base. The first side of the screen is connected with the lifting mechanism. The curling mechanism is connected to the second side of the screen. The control mechanism is arranged on the base and connected to the curling mechanism, and the control mechanism is configured to: control the movement of the curling mechanism, and drive the curling mechanism to roll up the second side, to adjust the pitch angle of the curtain.
图1为根据一些实施例的一种投影装置的侧视图;FIG. 1 is a side view of a projection device according to some embodiments;
图2为图1示出的投影装置的局部立体图;Fig. 2 is a partial perspective view of the projection device shown in Fig. 1;
图3为根据一些实施例的一种投影装置的结构图;Fig. 3 is a structural diagram of a projection device according to some embodiments;
图4为根据一些实施例的一种光学引擎的结构图;Fig. 4 is a structural diagram of an optical engine according to some embodiments;
图5为根据一些实施例的又一种投影屏幕的结构图;Fig. 5 is a structural diagram of another projection screen according to some embodiments;
图6为图5中圈B处的局部放大图;Figure 6 is a partial enlarged view of circle B in Figure 5;
图7为图5中圈C处的局部放大图;Figure 7 is a partial enlarged view of circle C in Figure 5;
图8为根据一些实施例的又一种投影屏幕的结构图;Fig. 8 is a structural diagram of another projection screen according to some embodiments;
图9为根据一些实施例的又一种投影屏幕的结构图;Fig. 9 is a structural diagram of another projection screen according to some embodiments;
图10为根据一些实施例的另一种投影装置的结构图;Fig. 10 is a structural diagram of another projection device according to some embodiments;
图11为根据一些实施例的另一种投影装置的局部立体图;Fig. 11 is a partial perspective view of another projection device according to some embodiments;
图12为根据一些实施例的又一种投影装置的局部立体图;Fig. 12 is a partial perspective view of another projection device according to some embodiments;
图13为图12中投影装置的爆炸图;Fig. 13 is an exploded view of the projection device in Fig. 12;
图14为根据一些实施例的一种控制机构的结构图;Figure 14 is a structural diagram of a control mechanism according to some embodiments;
图15为根据一些实施例的一种投影屏幕处于收起状态的结构图;Fig. 15 is a structural diagram of a projection screen in a retracted state according to some embodiments;
图16为根据一些实施例的一种投影屏幕处于展开状态的结构图;Fig. 16 is a structural diagram of a projection screen in an unfolded state according to some embodiments;
图17为根据一些实施例的一种可旋转连接处的连接结构的结构图;Fig. 17 is a structural diagram of a connection structure of a rotatable connection according to some embodiments;
图18为根据一些实施例的一种可旋转连接处的连接结构的受力分析图;Fig. 18 is a force analysis diagram of a connection structure of a rotatable connection according to some embodiments;
图19为根据一些实施例的另一种可旋转连接处的连接结构的结构图;Fig. 19 is a structural diagram of another connection structure of a rotatable connection according to some embodiments;
图20为根据一些实施例的另一种可旋转连接处的连接结构的受力分析图;Fig. 20 is a force analysis diagram of another connection structure of a rotatable connection according to some embodiments;
图21为根据一些实施例的又一种可旋转连接处的连接结构的结构图;Fig. 21 is a structural diagram of another connection structure of a rotatable connection according to some embodiments;
图22为根据一些实施例的另一种投影屏幕处于展开状态的结构图;Fig. 22 is a structural diagram of another projection screen in an unfolded state according to some embodiments;
图23为根据一些实施例的另一种投影屏幕处于收起状态的结构图;Fig. 23 is a structural diagram of another projection screen in a retracted state according to some embodiments;
图24为图23中圈A处的局部放大图;Fig. 24 is a partial enlarged view of circle A in Fig. 23;
图25为根据一些实施例的一种第二丝杠的结构图;Fig. 25 is a structural diagram of a second lead screw according to some embodiments;
图26为根据一些实施例的一种传送带组件的结构图;Figure 26 is a block diagram of a conveyor belt assembly according to some embodiments;
图27为根据一些实施例的一种幕布的局部结构图;Fig. 27 is a partial structural diagram of a curtain according to some embodiments;
图28为图27中圈D处的局部放大图;Fig. 28 is a partial enlarged view at circle D in Fig. 27;
图29为根据一些实施例的另一种幕布的局部结构图;Figure 29 is a partial structural view of another screen according to some embodiments;
图30为根据一些实施例的又一种投影屏幕的结构图;Fig. 30 is a structural diagram of yet another projection screen according to some embodiments;
图31为图30中圈E处的局部放大图;Figure 31 is a partial enlarged view of circle E in Figure 30;
图32为图30中圈F处的局部放大图;Figure 32 is a partial enlarged view at the circle F in Figure 30;
图33为图30中圈G处的局部放大图;Fig. 33 is a partial enlarged view at circle G in Fig. 30;
图34为图30中圈H处的局部放大图。Fig. 34 is a partially enlarged view of circle H in Fig. 30 .
下面将结合附图,对本公开一些实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本公开一部分实施例,而不是全部的实施例。基于本公开所提供的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本公开保护的范围。The technical solutions in some embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present disclosure, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments provided in the present disclosure belong to the protection scope of the present disclosure.
本文中“适用于”或“被配置为”的使用意味着开放和包容性的语言,其不排除适用于或被配置为执行额外任务或步骤的设备。The use of "suitable for" or "configured to" herein means open and inclusive language that does not exclude devices that are suitable for or configured to perform additional tasks or steps.
另外,“基于”的使用意味着开放和包容性,因为“基于”一个或多个所述条件或值的过程、步骤、计算或其他动作在实践中可以基于额外条件或超出所述的值。Additionally, the use of "based on" is meant to be open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values may in practice be based on additional conditions or beyond stated values.
如本文所使用的那样,“约”、“大致”或“近似”包括所阐述的值以及处于特定值的可接受偏差范围内的平均值,其中所述可接受偏差范围如由本领域普通技术人员考虑到正在讨论的测量以及与特定量的测量相关的误差(即,测量系统的局限性)所确定。As used herein, "about", "approximately" or "approximately" includes the stated value as well as the average within the acceptable deviation range of the specified value, wherein the acceptable deviation range is as determined by one of ordinary skill in the art. Determined taking into account the measurement in question and the errors associated with the measurement of a particular quantity (ie, limitations of the measurement system).
如本文所使用的那样,“平行”、“垂直”、“相等”包括所阐述的情况以及与所阐述的情况相近似的情况,该相近似的情况的范围处于可接受偏差范围内,其中所述可接受偏差范围如由本领域普通技术人员考虑到正在讨论的测量以及与特定量的测量相关的误差(即,测量系统的局限性)所确定。例如,“平行”包括绝对平行和近似平行,其中近似平行的可接受偏差范围例如可以是5°以内偏差;“垂直”包括绝对垂直和近似垂直,其中近似垂直的可接受偏差范围例如也可以是5°以内偏差。“相等”包括绝对相等和近似相等,其中近似相等的可接受偏差范围内例如可以是相等的两者之间的差值小于或等于其中任一者的5%。As used herein, "parallel", "perpendicular", and "equal" include the stated situation and the situation similar to the stated situation, the range of the similar situation is within the acceptable deviation range, wherein the The acceptable deviation ranges are as determined by one of ordinary skill in the art taking into account the measurement in question and errors associated with measurement of the particular quantity (ie, limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, a deviation within 5°; Deviation within 5°. "Equal" includes absolute equality and approximate equality, where the difference between the two that may be equal is less than or equal to 5% of either within acceptable tolerances for approximate equality, for example.
图1为根据一些实施例的一种投影装置的侧视图,图2为图1示出的投影装置的局部立体图,图3为根据一些实施例的一种投影装置的结构图。如图1至图3所示,投影装置1000包括光学引擎100、投影屏幕200和收纳部300。FIG. 1 is a side view of a projection device according to some embodiments, FIG. 2 is a partial perspective view of the projection device shown in FIG. 1 , and FIG. 3 is a structural diagram of a projection device according to some embodiments. As shown in FIGS. 1 to 3 , the projection device 1000 includes an optical engine 100 , a projection screen 200 and a storage portion 300 .
光学引擎100可以为超短焦光学引擎,该超短焦光学引擎可以为数字光处理(Digital Light Procession,DLP)光学引擎。这样,可以缩小光学引擎100与投影屏幕200所在平面的垂直距离,以减小投影装置的占用空间。The optical engine 100 may be an ultra-short-focus optical engine, and the ultra-short-focus optical engine may be a digital light processing (Digital Light Processing, DLP) optical engine. In this way, the vertical distance between the optical engine 100 and the plane where the projection screen 200 is located can be reduced to reduce the occupied space of the projection device.
图4为根据一些实施例的一种光学引擎的结构图。如图4所示,光学引擎100包括光源11、光机系统12和镜头13。光源11和镜头13均与光机系统12固定连接。光源11被配置为出射光束至光机系统12。镜头13可以为超短焦投影镜头。Fig. 4 is a structural diagram of an optical engine according to some embodiments. As shown in FIG. 4 , the optical engine 100 includes a light source 11 , an optical-mechanical system 12 and a lens 13 . Both the light source 11 and the lens 13 are fixedly connected with the optomechanical system 12 . The light source 11 is configured to emit light beams to the optomechanical system 12 . The lens 13 may be an ultra-short focal projection lens.
光机系统12包括数字微镜阵列(Digital Micromirror Device,DMD)芯片以及与DMD芯片电连接的驱动电路板,驱动电路板被配置为向DMD芯片提供驱动信号。从而DMD芯片能够基于该驱动信号对光源11出射的光束进行调制,并将调制后的光束出射至镜头13,进而通过镜头13出射光束至幕布202,以实现画面的显示。The optomechanical system 12 includes a digital micromirror array (Digital Micromirror Device, DMD) chip and a driving circuit board electrically connected to the DMD chip, and the driving circuit board is configured to provide a driving signal to the DMD chip. Therefore, the DMD chip can modulate the light beam emitted by the light source 11 based on the driving signal, and emit the modulated light beam to the lens 13 , and then emit the light beam to the curtain 202 through the lens 13 to realize the display of the picture.
图5为根据一些实施例的又一种投影屏幕的结构图,图6为图5中圈B处的局部放大图,图7为图5中圈C处的局部放大图。图8为根据一些实施例的又一种投影屏幕的结构图。Fig. 5 is a structural diagram of another projection screen according to some embodiments, Fig. 6 is a partial enlarged view of circle B in Fig. 5 , and Fig. 7 is a partial enlarged view of circle C in Fig. 5 . Fig. 8 is a structural diagram of yet another projection screen according to some embodiments.
在一些实施例中,如图5至图8所示,幕布202包括光学膜片2021。光学膜片2021包括白塑幕、灰塑幕、可卷曲的菲涅尔光学屏或者柔性的黑栅幕等。In some embodiments, as shown in FIGS. 5-8 , the curtain 202 includes an optical film 2021 . The optical film 2021 includes white plastic screen, gray plastic screen, rollable Fresnel optical screen or flexible black grid screen, etc.
光学膜片2021相比于传统的幕布202具有较高的光学增益,能够尽可能的还 原光束的亮度和对比度。Compared with the traditional curtain 202, the optical film 2021 has higher optical gain, and can restore the brightness and contrast of the light beam as much as possible.
图9为根据一些实施例的又一种投影屏幕的结构图。在一些实施例中,如图9所示,幕布202还包括柔性载体2022。光学膜片2021的与光学膜片用于显示画面的表面相对的一侧表面(例如,背面)固定(如粘接)在柔性载体2022上。柔性载体2022的材料为柔软且拉伸膜量较大的材料,以保证幕布202的卷曲,同时避免柔性载体2022在外力作用下的变形。例如,柔性载体2022为合成布。Fig. 9 is a structural diagram of yet another projection screen according to some embodiments. In some embodiments, as shown in FIG. 9 , the curtain 202 further includes a flexible carrier 2022 . The surface (for example, the back surface) of the optical film 2021 opposite to the surface of the optical film for displaying pictures is fixed (eg, bonded) on the flexible carrier 2022 . The material of the flexible carrier 2022 is soft and has a large amount of stretched film, so as to ensure the curling of the curtain 202 and avoid the deformation of the flexible carrier 2022 under the action of external force. For example, flexible carrier 2022 is a synthetic cloth.
收纳部300被配置为收纳光学引擎100和投影屏幕200。这样,当不使用投影装置1000时,光学引擎100和投影屏幕200收纳至收纳部300中,便于节省空间。当投影装置1000处于使用状态时,升降机构203控制幕布202展开后,光学引擎100投射光束至幕布202上,以使幕布202显示投影画面。The storage part 300 is configured to store the optical engine 100 and the projection screen 200 . In this way, when the projection device 1000 is not in use, the optical engine 100 and the projection screen 200 are stored in the storage portion 300 , which is convenient for saving space. When the projection device 1000 is in use, the lifting mechanism 203 controls the curtain 202 to unfold, and the optical engine 100 projects light beams onto the curtain 202 to make the curtain 202 display a projected image.
如图3所示,收纳部300包括透光区301和开口302,光学引擎100收纳于透光区301内,光学引擎100出射的光束能够透过透光区301。投影屏幕200收纳于开口302内,升降机构203能够控制幕布202伸出开口302并展开。As shown in FIG. 3 , the receiving portion 300 includes a light-transmitting area 301 and an opening 302 , the optical engine 100 is accommodated in the light-transmitting area 301 , and the light beam emitted by the optical engine 100 can pass through the light-transmitting area 301 . The projection screen 200 is accommodated in the opening 302 , and the lifting mechanism 203 can control the screen 202 to protrude from the opening 302 and unfold.
透光区301的中心点到展开后的幕布202所在的平面的垂直距离S等于光学引擎100的投射比与幕布202上的显示区域的宽度W的乘积,显示区域的宽度W是指显示区域沿水平方向的尺寸。这样,能够保证光学引擎100出射的光束能够精准地投射到幕布202的显示区域,以改善幕布202上投影画面的清晰度。The vertical distance S from the center point of the light-transmitting area 301 to the plane where the screen 202 is unfolded is equal to the product of the projection ratio of the optical engine 100 and the width W of the display area on the screen 202, and the width W of the display area refers to the The horizontal dimension. In this way, it can be ensured that the light beam emitted by the optical engine 100 can be accurately projected onto the display area of the curtain 202 , so as to improve the definition of the projected picture on the curtain 202 .
投射比是光学引擎100自身的性能参数,因此光学引擎100的投射比与选取的光学引擎100有关,即,选取不同的光学引擎,则投射比不同,进而透光区301的中心点到展开后的幕布202所在的平面的垂直距离也不相同。这样,通过光学引擎100的投射比与显示区域的宽度计算出透光区301的中心点到展开后的幕布202所在的平面的垂直距离,从而可以保证光学引擎100出射的光束能够完整的投影在幕布202的显示区域。The throw ratio is the performance parameter of the optical engine 100 itself, so the throw ratio of the optical engine 100 is related to the selected optical engine 100, that is, if different optical engines are selected, the throw ratio will be different, and then the central point of the light-transmitting area 301 will reach the position after unfolding. The vertical distances of the planes where the curtains 202 are located are also different. In this way, the vertical distance from the center point of the light-transmitting area 301 to the plane where the unfolded curtain 202 is located is calculated through the projection ratio of the optical engine 100 and the width of the display area, so as to ensure that the light beam emitted by the optical engine 100 can be completely projected on the screen. The display area of the curtain 202 .
图10为根据一些实施例的另一种投影装置的结构图。Fig. 10 is a structural diagram of another projection device according to some embodiments.
图10与图3相比,区别主要在于,图10中的收纳部300包括第一容置部303和第二容置部304。透光区301设置于第一容置部303上,开口302设置于第二容置部304上。也就是说,图10中的收纳部300为分体件,而图3中的收纳部300为一体件。Compared with FIG. 3 , the main difference between FIG. 10 is that the accommodating portion 300 in FIG. 10 includes a first accommodating portion 303 and a second accommodating portion 304 . The transparent area 301 is disposed on the first accommodating portion 303 , and the opening 302 is disposed on the second accommodating portion 304 . That is to say, the accommodating portion 300 in FIG. 10 is a separate piece, while the accommodating portion 300 in FIG. 3 is an integral piece.
在一些实施例中,当收纳部300为分体件时,此时第一容置部303的长度小于第二容置部304的长度。或者,如图10所示,收纳部300呈长方体结构,此时第一容置部303的长度等于第二容置部304的长度。In some embodiments, when the receiving part 300 is a separate piece, the length of the first receiving part 303 is smaller than the length of the second receiving part 304 . Alternatively, as shown in FIG. 10 , the accommodating portion 300 has a cuboid structure, and at this time the length of the first accommodating portion 303 is equal to the length of the second accommodating portion 304 .
为了便于叙述,以下主要以图1展现的方位对投影装置1000进行说明,定义投影屏幕200的靠近光学引擎100的一侧为前侧,投影屏幕200的远离光学引擎100的一侧为后侧,投影屏幕200的高度方向为上、下方向。For the convenience of description, the projection device 1000 will be described mainly in the orientation shown in FIG. The height directions of the projection screen 200 are up and down.
光学引擎100被配置为向投影屏幕200出射光束。The optical engine 100 is configured to emit light beams to the projection screen 200 .
投影屏幕200可以包括基座201、幕布202、升降机构203、卷曲机构204和控制机构205。The projection screen 200 may include a base 201 , a curtain 202 , a lifting mechanism 203 , a curling mechanism 204 and a control mechanism 205 .
升降机构203的第一端与幕布202的第一侧边202A固定连接,且升降机构203的第二端固定在基座201上。升降机构203被配置为控制幕布202展开后接收光学引擎100出射的光束,以实现投影画面的显示。A first end of the lifting mechanism 203 is fixedly connected to the first side 202A of the screen 202 , and a second end of the lifting mechanism 203 is fixed on the base 201 . The lifting mechanism 203 is configured to control the unfolded curtain 202 to receive the light beam emitted by the optical engine 100 to realize the display of the projected image.
卷曲机构204包括卷筒2041,卷筒2041可以与幕布202的第二侧边202B固定连接。卷筒2041被配置为绕幕布202的第二侧边202B旋转,以使幕布202收起或展开。The curling mechanism 204 includes a roll 2041 which can be fixedly connected to the second side 202B of the curtain 202 . The drum 2041 is configured to rotate around the second side 202B of the curtain 202 to make the curtain 202 be retracted or unfolded.
需要说明的是,幕布202的第一侧边202A和幕布202的第二侧边202B为相对的两个侧边。例如,幕布202的第一侧边202A为幕布202的远离基座201的一侧边(如上侧边),幕布202的第二侧边202B为幕布202的靠近基座201的一侧边(如下侧边)。It should be noted that the first side 202A of the screen 202 and the second side 202B of the screen 202 are two opposite sides. For example, the first side 202A of the curtain 202 is the side of the curtain 202 away from the base 201 (such as the upper side), and the second side 202B of the curtain 202 is the side of the curtain 202 close to the base 201 (as follows side).
当幕布202包括光学膜片2021时,光学膜片2021分别与卷曲机构204、升降 机构203固定连接,通过升降机构203对光学膜片2021的控制和张紧,可以提高光学膜片2021的平坦度,能够适用于超短焦投影成像应用中。When the curtain 202 includes the optical film 2021, the optical film 2021 is fixedly connected with the curling mechanism 204 and the lifting mechanism 203 respectively, and the flatness of the optical film 2021 can be improved by controlling and tensioning the optical film 2021 through the lifting mechanism 203 , which can be suitable for ultra-short-focus projection imaging applications.
控制机构205固定在基座201上,且控制机构205与卷筒2041连接。控制机构205被配置为在幕布202展开后,控制卷筒2041移动,以带动卷筒2041绕幕布202的第一侧边202A转动。The control mechanism 205 is fixed on the base 201 , and the control mechanism 205 is connected with the reel 2041 . The control mechanism 205 is configured to control the movement of the reel 2041 to drive the reel 2041 to rotate around the first side 202A of the curtain 202 after the curtain 202 is unfolded.
在一些实施例中,在升降机构203将幕布202展开后,投影屏幕200中的控制机构205可以控制卷筒2041在指定方向上移动。由于幕布202的第一侧边202A与升降机构203固定连接,升降机构203固定在基座201上,且幕布202的第二侧边202B与卷筒2041固定连接,因此,在控制机构205控制卷筒2041在指定方向上移动时,幕布202的第一侧边202A不会相对于基座201进行移动,而幕布202的第二侧边202B会相对于基座201进行移动,使得卷筒2041可以带动幕布202绕幕布202的第一侧边202A转动,进而可以调整幕布202的倾斜状态。In some embodiments, after the lifting mechanism 203 unfolds the curtain 202, the control mechanism 205 in the projection screen 200 can control the roll 2041 to move in a specified direction. Since the first side 202A of the curtain 202 is fixedly connected to the lifting mechanism 203, the lifting mechanism 203 is fixed on the base 201, and the second side 202B of the curtain 202 is fixedly connected to the reel 2041, therefore, the control mechanism 205 controls the reel When the cylinder 2041 moves in a specified direction, the first side 202A of the curtain 202 will not move relative to the base 201, but the second side 202B of the curtain 202 will move relative to the base 201, so that the roll 2041 can The screen 202 is driven to rotate around the first side 202A of the screen 202 , thereby adjusting the tilt state of the screen 202 .
需要说明的是,上述指定方向是指:在幕布202未发生倾斜时,与幕布202所在平面相垂直的方向。It should be noted that the above specified direction refers to a direction perpendicular to the plane where the screen 202 is located when the screen 202 is not tilted.
例如,在幕布202被升降机构203展开后发生前倾时,控制机构205带动卷筒2041沿指定方向朝向观察者移动时,幕布202的第二侧边202B会相对于基座201朝向观察者进行移动,使得幕布202的第二侧边202B与观察者之间的水平距离近似等于幕布202的第一侧边202A与观察者之间的水平距离。For example, when the curtain 202 is tilted forward after being unfolded by the lifting mechanism 203, when the control mechanism 205 drives the reel 2041 to move towards the observer in a specified direction, the second side 202B of the curtain 202 will move towards the observer relative to the base 201. Move such that the horizontal distance between the second side 202B of the curtain 202 and the observer is approximately equal to the horizontal distance between the first side 202A of the curtain 202 and the observer.
在幕布202被升降机构203展开后发生后仰时,控制机构205带动卷筒2041沿指定方向背离观察者移动时,而幕布202的第二侧边202B相对于基座201背离观察者进行移动,使得幕布202的第二侧边202B与观察者之间的水平距离近似等于幕布202的第一侧边202A与观察者之间的水平距离。When the curtain 202 is tilted back after being unfolded by the lifting mechanism 203, the control mechanism 205 drives the reel 2041 to move away from the observer in a designated direction, and the second side 202B of the curtain 202 moves away from the observer relative to the base 201, The horizontal distance between the second side 202B of the curtain 202 and the observer is approximately equal to the horizontal distance between the first side 202A of the curtain 202 and the observer.
如此,能够有效的降低幕布202被升降机构203展开后发生倾斜(例如,前倾或者后仰)的概率,降低光学引擎100投射到幕布202上的投影画面出现畸变和模糊失真等问题的概率,改善了幕布202上的投影画面的显示效果。In this way, the probability of inclination (for example, forward or backward) of the curtain 202 after being unfolded by the lifting mechanism 203 can be effectively reduced, and the probability of problems such as distortion and blurring in the projected picture projected by the optical engine 100 on the curtain 202 can be reduced. The display effect of the projected picture on the curtain 202 is improved.
图11为根据一些实施例的另一种投影装置的局部立体图。如图11所示,控制机构205包括调节杆2051和与调节杆2051相连的第一滑块2052,第一滑块2052与卷筒2041连接,且第一滑块2052可滑动地与基座201连接。Fig. 11 is a partial perspective view of another projection device according to some embodiments. As shown in Figure 11, the control mechanism 205 includes an adjusting rod 2051 and a first slider 2052 connected to the adjusting rod 2051, the first slider 2052 is connected to the reel 2041, and the first slider 2052 is slidably connected to the base 201 connect.
调节杆2051的长度方向与卷筒2041的长度方向相交,例如,调节杆2051的长度方向与卷筒2041的长度方向垂直。调节杆2051被配置为带动第一滑块2052在基座201上滑动,以带动卷筒2041移动。如此,在投影屏幕200中的幕布202展开后,调节杆2051控制第一滑块2052在基座201上滑动,使得卷筒2041也随第一滑块2052移动,这样,卷筒2041可以绕幕布202的第一侧边202A转动。The length direction of the adjusting rod 2051 intersects the length direction of the reel 2041 , for example, the length direction of the adjustment rod 2051 is perpendicular to the length direction of the reel 2041 . The adjusting rod 2051 is configured to drive the first slider 2052 to slide on the base 201 to drive the reel 2041 to move. In this way, after the curtain 202 in the projection screen 200 is unfolded, the adjusting rod 2051 controls the first slider 2052 to slide on the base 201, so that the reel 2041 also moves with the first slider 2052, so that the reel 2041 can go around the screen The first side 202A of 202 rotates.
在一些实施例中,参考图11,调节杆2051为第一丝杠2051A,第一滑块2052与第一丝杠2051A螺纹连接。第一丝杠2051A可以被配置为绕第一丝杠2051A的中心轴转动,以带动第一滑块2052在第一丝杠2051A的长度方向上移动,使得第一滑块2052在基座201上滑动。需要说明的是,第一丝杠2051A绕自身中心轴转动包括第一丝杠2051A绕自身中心轴沿第一方向和第二方向转动。第一方向为顺时针方向和逆时针方向中的一个,第二方向为顺时针方向和逆时针方向中的另一个。In some embodiments, referring to FIG. 11 , the adjusting rod 2051 is a first lead screw 2051A, and the first slider 2052 is screwed to the first lead screw 2051A. The first lead screw 2051A can be configured to rotate around the central axis of the first lead screw 2051A, so as to drive the first slider 2052 to move in the length direction of the first lead screw 2051A, so that the first slider 2052 is on the base 201 slide. It should be noted that the rotation of the first lead screw 2051A around its central axis includes the rotation of the first lead screw 2051A around its own central axis along the first direction and the second direction. The first direction is one of clockwise and counterclockwise, and the second direction is the other of clockwise and counterclockwise.
在第一丝杠2051A绕自身中心轴沿第一方向转动时,第一丝杠2051A带动第一滑块2052沿指定方向朝向观察者移动,通过第一滑块2052的运动,使得卷筒2041沿指定方向朝向观察者移动。在幕布202的第二侧边202B跟随卷筒2041沿指定方向朝向观察者移动后,幕布202的第二侧边202B与观察者之间的水平距离近似等于幕布202的第一侧边202A与观察者之间的水平距离。When the first lead screw 2051A rotates around its central axis in the first direction, the first lead screw 2051A drives the first slider 2052 to move toward the observer in a specified direction, and the movement of the first slider 2052 makes the reel 2041 move along the Moves towards the viewer in the specified direction. After the second side 202B of the curtain 202 follows the reel 2041 and moves toward the observer in a designated direction, the horizontal distance between the second side 202B of the curtain 202 and the observer is approximately equal to the distance between the first side 202A of the curtain 202 and the observer. the horizontal distance between them.
在第一丝杠2051A绕自身中心轴沿第二方向转动时,第一丝杠2051A带动第一滑块2052沿指定方向背离观察者移动,通过第一滑块2052的运动,使得卷筒2041沿指定方向背离观察者移动。在幕布202的第二侧边202B跟随卷筒2041沿指定方向背离观察者移动后,幕布202的第二侧边202B与观察者之间的水平距离近似等 于幕布202的第一侧边202A与观察者之间的水平距离。When the first lead screw 2051A rotates around its central axis in the second direction, the first lead screw 2051A drives the first slider 2052 to move away from the observer in a specified direction, and the movement of the first slider 2052 makes the reel 2041 move along the Move in the specified direction away from the viewer. After the second side 202B of the curtain 202 follows the drum 2041 and moves away from the observer in a designated direction, the horizontal distance between the second side 202B of the curtain 202 and the observer is approximately equal to the distance between the first side 202A of the curtain 202 and the observer. the horizontal distance between them.
需要说明的是,第一丝杠2051A绕自身中心轴顺时针方向或逆时针方向转动以带动第一滑块2052移动的方向,取决于第一丝杠2051A的螺纹的旋向。It should be noted that the direction in which the first lead screw 2051A rotates clockwise or counterclockwise around its central axis to drive the first sliding block 2052 to move depends on the direction of rotation of the threads of the first lead screw 2051A.
图12为根据一些实施例的又一种投影装置的局部立体图,图13为图12中投影装置的爆炸图。如图12和图13所示,第一滑块2052包括第一滑块本体2052A和转接件2052B,第一滑块本体2052A与转接件2052B螺纹连接。例如,转接件2052B为丝杠螺母。Fig. 12 is a partial perspective view of another projection device according to some embodiments, and Fig. 13 is an exploded view of the projection device in Fig. 12 . As shown in FIG. 12 and FIG. 13 , the first slider 2052 includes a first slider body 2052A and an adapter 2052B, and the first slider body 2052A is screwed to the adapter 2052B. For example, the adapter 2052B is a lead screw nut.
第一滑块本体2052A包括第一通孔A1。第一滑块本体2052A通过第一通孔A1套设在第一丝杠2051A上,转接件2052B套设在第一丝杠2051A上。其中,第一滑块本体2052A中的第一通孔A1的直径大于第一丝杠2051A的直径。这样,第一滑块本体2052A可以在转接件2052B的带动下沿第一丝杠2051A的长度方向移动。The first slider body 2052A includes a first through hole A1. The first slider body 2052A is sleeved on the first screw 2051A through the first through hole A1, and the adapter 2052B is sleeved on the first screw 2051A. Wherein, the diameter of the first through hole A1 in the first slider body 2052A is larger than the diameter of the first lead screw 2051A. In this way, the first slider body 2052A can move along the length direction of the first lead screw 2051A driven by the adapter 2052B.
在幕布202被升降机构203展开发生倾斜时,第一丝杠2051A可以绕自身中心轴转动(例如,顺时针转动或者逆时针转动),接着第一丝杠2051A能够带动转接件2052B在第一丝杠2051A上移动,转接件2052B可以带动第一滑块本体2052A在第一丝杠2051A上移动,使得第一滑块本体2052A带动卷筒2041沿指定方向移动。在一些实施例中,控制机构205还包括第一驱动电机2053和支撑架2054。支撑架2054与基座201固定连接。例如,支撑架2054包括水平部2054A和竖直部2054B,支撑架2054通过水平部2054A与基座201相连。第一驱动电机2053和第一丝杠2051A分别位于支撑架2054的竖直部2054B的两侧。第一驱动电机2053与支撑架2054的竖直部2054B固定连接。When the curtain 202 is unfolded by the lifting mechanism 203 and tilted, the first lead screw 2051A can rotate around its own central axis (for example, clockwise or counterclockwise), and then the first lead screw 2051A can drive the adapter 2052B in the first position. When the lead screw 2051A moves, the adapter 2052B can drive the first slider body 2052A to move on the first lead screw 2051A, so that the first slider body 2052A drives the reel 2041 to move in a specified direction. In some embodiments, the control mechanism 205 further includes a first driving motor 2053 and a support frame 2054 . The supporting frame 2054 is fixedly connected with the base 201 . For example, the support frame 2054 includes a horizontal portion 2054A and a vertical portion 2054B, and the support frame 2054 is connected to the base 201 through the horizontal portion 2054A. The first driving motor 2053 and the first lead screw 2051A are respectively located on two sides of the vertical portion 2054B of the supporting frame 2054 . The first driving motor 2053 is fixedly connected to the vertical portion 2054B of the support frame 2054 .
例如,第一滑块本体2052A与转接件2052B之间、第一驱动电机2053与支撑架2054之间通过螺钉等方式进行固定连接。For example, the first slider body 2052A and the adapter 2052B, and the first drive motor 2053 and the support frame 2054 are fixedly connected by means of screws or the like.
第一驱动电机2053包括输出轴B1,输出轴B1与第一丝杠2051A的一端连接,通过第一驱动电机2053的转动,可以带动第一丝杠2051A绕自身的中心轴线转动。The first drive motor 2053 includes an output shaft B1 connected to one end of the first lead screw 2051A. The rotation of the first drive motor 2053 can drive the first lead screw 2051A to rotate around its central axis.
在一些实施例中,调节杆2051的驱动方式也可以采用手动的方式。例如,在调节杆2051的远离第一滑块2052的一端设置有调节旋钮,通过手动旋转该调节旋钮来带动调节杆2051转动,从而通过调节杆2051带动第一滑块2052移动。In some embodiments, the driving mode of the adjusting rod 2051 can also be manually. For example, an adjustment knob is provided at the end of the adjustment rod 2051 away from the first slider 2052 , and the adjustment knob 2051 is driven to rotate by manually rotating the adjustment knob, so that the first slider 2052 is driven to move through the adjustment rod 2051 .
在一些实施例中,控制机构205还包括联轴器2055和轴承2056。支撑架2054的竖直部2054B包括通孔C1,第一驱动电机2053的输出轴B1穿设于通孔C1,以与联轴器2055的一端连接,联轴器2055的另一端与第一丝杠2051A的所述一端连接。轴承2056套设在第一丝杠2051A的所述一端,第一丝杠2051A通过轴承2056与基座201转动连接。通过联轴器2055可以实现第一丝杠2051A与第一驱动电机2053的连接。In some embodiments, the control mechanism 205 also includes a coupling 2055 and a bearing 2056 . The vertical part 2054B of the support frame 2054 includes a through hole C1, the output shaft B1 of the first driving motor 2053 passes through the through hole C1 to connect with one end of the coupling 2055, and the other end of the coupling 2055 is connected with the first wire The one end of the bar 2051A is connected. The bearing 2056 is sleeved on the one end of the first lead screw 2051A, and the first lead screw 2051A is rotatably connected with the base 201 through the bearing 2056 . The connection between the first lead screw 2051A and the first driving motor 2053 can be realized through the coupling 2055 .
控制机构205对幕布202的倾斜状态进行调节的整体过程如下:The whole process of adjusting the inclination state of the curtain 202 by the control mechanism 205 is as follows:
在幕布202被升降机构203展开后发生倾斜时,首先,第一驱动电机2053转动,其动力通过第一驱动电机2053的输出轴传递至联轴器2055,通过联轴器2055带动第一丝杠2051A转动;然后,第一丝杠2051A带动转接件2052B使转接件2052B在第一丝杠2051A上沿指定方向移动,转接件2052B带动第一滑块本体2052A使第一滑块本体2052A在第一丝杠2051A上沿指定方向移动。第一滑块本体2052A带动卷筒2041沿指定方向移动,从而实现对幕布202倾斜状态的调节。When the curtain 202 is tilted after being unfolded by the lifting mechanism 203, first, the first driving motor 2053 rotates, and its power is transmitted to the coupling 2055 through the output shaft of the first driving motor 2053, and the first screw is driven by the coupling 2055. 2051A rotates; then, the first lead screw 2051A drives the adapter 2052B to make the adapter 2052B move along the specified direction on the first lead screw 2051A, and the adapter 2052B drives the first slider body 2052A to make the first slider body 2052A Moves in the specified direction on the first lead screw 2051A. The first slider body 2052A drives the reel 2041 to move in a specified direction, so as to adjust the tilt state of the screen 202 .
图14为根据一些实施例的一种控制机构的结构图。如图14所示,调节杆2051为伸缩杆2051B,控制机构205还包括控制本体2057,控制本体2057包括容纳腔2057A。伸缩杆2051B的一部分位于容纳腔2057A内,且伸缩杆2051B的远离控制本体2057的一端与第一滑块2052固定连接。Figure 14 is a block diagram of a control mechanism according to some embodiments. As shown in FIG. 14 , the adjusting rod 2051 is a telescopic rod 2051B, and the control mechanism 205 further includes a control body 2057 , and the control body 2057 includes a receiving cavity 2057A. A part of the telescopic rod 2051B is located in the receiving chamber 2057A, and an end of the telescopic rod 2051B away from the control body 2057 is fixedly connected to the first slider 2052 .
控制本体2057被配置为控制伸缩杆2051B在容纳腔2057A内伸缩,以带动第一滑块2052在基座201上滑动。如此,在投影屏幕200中的幕布202展开后,伸缩杆2051B在控制本体2057的控制下在容纳腔2057A内伸缩时,伸缩杆2051B可以带动第一滑块2052移动,使得卷筒2041也随第一滑块2052移动,进而使得卷 筒2041可以绕幕布202的第一侧边202A转动。The control body 2057 is configured to control the expansion and contraction of the telescopic rod 2051B in the accommodating cavity 2057A, so as to drive the first slider 2052 to slide on the base 201 . In this way, after the curtain 202 in the projection screen 200 is unfolded, when the telescopic rod 2051B expands and contracts in the accommodating cavity 2057A under the control of the control body 2057, the telescopic rod 2051B can drive the first slider 2052 to move, so that the reel 2041 also moves with the second sliding block. A sliding block 2052 moves, so that the roll 2041 can rotate around the first side 202A of the curtain 202 .
例如,伸缩杆2051B位于容纳腔2057A外时,伸缩杆2051B带动第一滑块2052沿指定方向朝向观察者移动,通过第一滑块2052的运动,使得卷筒2041沿指定方向朝向观察者移动。伸缩杆2051B的所述一部分在容纳腔2057A内收缩时,伸缩杆2051B带动第一滑块2052沿指定方向背离观察者移动,通过第一滑块2052的运动,使得卷筒2041沿指定方向背离观察者移动。需要说明的是,由伸缩杆2051B和控制本体2057组成的器件可以为伸缩电机、伸缩式气压缸或伸缩式液压缸等。For example, when the telescopic rod 2051B is located outside the receiving cavity 2057A, the telescopic rod 2051B drives the first slider 2052 to move toward the observer in a designated direction, and the movement of the first slider 2052 makes the reel 2041 move toward the observer in a designated direction. When the part of the telescopic rod 2051B shrinks in the accommodation cavity 2057A, the telescopic rod 2051B drives the first slider 2052 to move away from the observer along the specified direction, and the movement of the first slider 2052 makes the reel 2041 away from the observer along the specified direction. or move. It should be noted that the device composed of the telescopic rod 2051B and the control body 2057 can be a telescopic motor, telescopic pneumatic cylinder or telescopic hydraulic cylinder, etc.
参考图13,投影屏幕200中的基座201和第一滑块2052中的一个包括条形凸起D1,基座201和第一滑块2052中的另一个可以包括与条形凸起D1相匹配的条形凹槽E1。Referring to FIG. 13 , one of the base 201 and the first slider 2052 in the projection screen 200 includes a bar-shaped protrusion D1, and the other of the base 201 and the first slider 2052 may include a bar-shaped protrusion D1. Matching bar groove E1.
例如,基座201包括条形凸起D1,第一滑块2052包括与条形凸起D1相匹配的条形凹槽E1。或者,第一滑块2052包括条形凸起D1,基座201包括与条形凸起D1相匹配的条形凹槽E1。For example, the base 201 includes a bar-shaped protrusion D1, and the first slider 2052 includes a bar-shaped groove E1 matching the bar-shaped protrusion D1. Alternatively, the first slider 2052 includes a bar-shaped protrusion D1, and the base 201 includes a bar-shaped groove E1 matching the bar-shaped protrusion D1.
为了便于叙述,本公开中的附图主要以基座201包括条形凸起D1,第一滑块2052包括与条形凸起D1相匹配的条形凹槽E1为例进行说明,然而,这并不能理解为对本公开的限制。For the convenience of description, the drawings in the present disclosure mainly illustrate that the base 201 includes a bar-shaped protrusion D1, and the first slider 2052 includes a bar-shaped groove E1 that matches the bar-shaped protrusion D1. However, this It should not be construed as a limitation of the present disclosure.
条形凸起D1中的至少一部分位于条形凹槽E1内。这样,第一滑块2052在沿调节杆2051的长度方向移动时,通过条形凸起D1与条形凹槽E1的配合,有利于提高第一滑块2052与基座201之间的滑动稳定性。At least a part of the strip-shaped protrusion D1 is located in the strip-shaped groove E1. In this way, when the first slider 2052 moves along the length direction of the adjustment rod 2051, the cooperation between the strip-shaped protrusion D1 and the strip-shaped groove E1 is beneficial to improve the sliding stability between the first slider 2052 and the base 201 sex.
在一些实施例中,控制机构205中的第一滑块2052包括第二通孔F1,卷筒2041的一端位于第二通孔F1内,且与第一滑块2052可旋转连接。这样,通过卷筒2041与第二通孔F1的可旋转连接可以实现幕布202的收起。In some embodiments, the first slider 2052 in the control mechanism 205 includes a second through hole F1 , and one end of the reel 2041 is located in the second through hole F1 and is rotatably connected to the first slider 2052 . In this way, the curtain 202 can be retracted through the rotatable connection between the roll 2041 and the second through hole F1.
在一些实施例中,投影装置1000包括一个控制机构205。或者,投影装置1000包括两个控制机构205,两个控制机构205可以分别与卷筒2041的两端连接。这样,卷筒2041两端的控制机构205同时带动卷筒2041移动,以带动卷筒2041绕幕布202的第一侧边202A转动。如此,可以有效的降低幕布202被升降机构203展开后,幕布202发生倾斜的概率。In some embodiments, projection device 1000 includes a control mechanism 205 . Alternatively, the projection device 1000 includes two control mechanisms 205 , and the two control mechanisms 205 may be respectively connected to two ends of the roll 2041 . In this way, the control mechanisms 205 at both ends of the reel 2041 simultaneously drive the reel 2041 to move, so as to drive the reel 2041 to rotate around the first side 202A of the curtain 202 . In this way, the probability of tilting of the curtain 202 after the curtain 202 is unfolded by the lifting mechanism 203 can be effectively reduced.
如图1所示,升降机构203包括横梁2031和升降支架2032,升降支架2032与横梁2031的沿横梁2031的长度方向延伸的一条侧边连接,并且,横梁2031的沿长度方向延伸的另一条侧边与幕布202的第一侧边202A固定连接,升降支架2032被配置为控制幕布202展开或收起。As shown in Figure 1, the lifting mechanism 203 includes a crossbeam 2031 and a lifting bracket 2032, the lifting bracket 2032 is connected to one side of the crossbeam 2031 extending along the length direction of the crossbeam 2031, and the other side of the crossbeam 2031 extending along the length direction The side is fixedly connected with the first side 202A of the screen 202 , and the lifting bracket 2032 is configured to control the screen 202 to expand or retract.
横梁2031的长度可以等于幕布202的第一侧边202A的长度。这样,横梁2031可以沿横梁2031的长度方向对幕布202进行全面控制,从而可以保证幕布202的平整性。The length of the beam 2031 may be equal to the length of the first side 202A of the curtain 202 . In this way, the beam 2031 can fully control the curtain 202 along the length direction of the beam 2031 , thereby ensuring the smoothness of the curtain 202 .
图15为根据一些实施例的一种投影屏幕处于收起状态的结构图,图16为根据一些实施例的一种投影屏幕处于展开状态的结构图。Fig. 15 is a structural diagram of a projection screen in a retracted state according to some embodiments, and Fig. 16 is a structural diagram of a projection screen in an unfolded state according to some embodiments.
如图15或图16所示,投影屏幕200还包括支撑体207。支撑体207与基座201固定连接,支撑体207被配置为承载升降机构203和幕布202。支撑体207可以是支撑板、墙体的墙面、支撑柜的支撑面或桌子的桌面等。As shown in FIG. 15 or FIG. 16 , the projection screen 200 further includes a supporting body 207 . The supporting body 207 is fixedly connected with the base 201 , and the supporting body 207 is configured to carry the lifting mechanism 203 and the curtain 202 . The support body 207 may be a support board, a wall surface of a wall body, a support surface of a support cabinet, or a tabletop of a table, and the like.
升降机构203包括驱动组件2033、升降支架2032和横梁2031。The lifting mechanism 203 includes a driving assembly 2033 , a lifting bracket 2032 and a beam 2031 .
驱动组件2033与支撑体207连接。The driving assembly 2033 is connected with the supporting body 207 .
升降支架2032包括升降杆321和主动杆322,升降杆321的两端分别与支撑体207和横梁2031可旋转连接,主动杆322的两端分别与驱动组件2033和升降杆321可旋转连接。The lifting bracket 2032 includes a lifting rod 321 and an active rod 322. Both ends of the lifting rod 321 are rotatably connected to the support body 207 and the beam 2031 respectively, and both ends of the active rod 322 are rotatably connected to the drive assembly 2033 and the lifting rod 321 respectively.
幕布202的第一侧边202A与横梁2031固定连接,且幕布202的第二侧边202B与卷曲机构204固定连接。The first side 202A of the curtain 202 is fixedly connected to the beam 2031 , and the second side 202B of the curtain 202 is fixedly connected to the curling mechanism 204 .
在一些实施例中,驱动组件2033被配置为带动主动杆322的一端(如下端)移动,以实现主动杆322的另一端(如上端)的升起或下降,进而由主动杆322带 动升降杆321升起或下降,以实现横梁2031的升起或下降。这样,在卷曲机构204和驱动组件2033的配合下实现幕布202的收起或展开,在不使用投影屏幕200时,通过驱动组件2033带动主动杆322的所述一端移动,以使主动杆322的另一端下降,同时卷曲机构204绕幕布202的第一侧边202A卷绕以收起幕布202,减小了投影屏幕200的占用空间。In some embodiments, the driving assembly 2033 is configured to drive one end (such as the lower end) of the active rod 322 to move to realize the raising or lowering of the other end (such as the upper end) of the active rod 322, and then the active rod 322 drives the elevating rod 321 rises or falls, to realize the rise or fall of beam 2031. In this way, under the cooperation of the curling mechanism 204 and the drive assembly 2033, the curtain 202 can be retracted or unfolded. When the projection screen 200 is not in use, the drive assembly 2033 drives the one end of the active rod 322 to move, so that the active rod 322 The other end descends, and at the same time, the curling mechanism 204 winds around the first side 202A of the curtain 202 to retract the curtain 202 , reducing the occupied space of the projection screen 200 .
图17为根据一些实施例的一种可旋转连接处的连接结构的结构图,图18为根据一些实施例的一种可旋转连接处的连接结构的受力分析图。Fig. 17 is a structural diagram of a connection structure of a rotatable connection according to some embodiments, and Fig. 18 is a force analysis diagram of a connection structure of a rotatable connection according to some embodiments.
在一些实施例中,如图17所示,上述可旋转连接处的连接结构包括第一连接件1、第二连接件2和连接轴3。第一连接件1设置于第二连接件2的一侧,例如,第一连接件1和第二连接件2朝向远离彼此的方向延伸。第一连接件1包括第一连接孔H1,第二连接件2包括第二连接孔K1,连接轴3穿设于第一连接孔H1和第二连接孔I1,以实现第一连接件1和第二连接件2的可旋转连接。第一连接件1与升降杆321、主动杆322、支撑体207、驱动组件2033和横梁2031中的一个(例如,升降杆321)的一端固定连接,第二连接件2与升降杆321、主动杆322、支撑体207、驱动组件2033和横梁2031中的另一个(例如,主动杆322)的一端固定连接,以实现升降杆321、主动杆322、支撑体207、驱动组件2033和横梁2031中的两个的可旋转连接。In some embodiments, as shown in FIG. 17 , the above-mentioned connection structure at the rotatable connection includes a first connection part 1 , a second connection part 2 and a connection shaft 3 . The first connecting part 1 is disposed on one side of the second connecting part 2 , for example, the first connecting part 1 and the second connecting part 2 extend away from each other. The first connecting piece 1 includes a first connecting hole H1, the second connecting piece 2 includes a second connecting hole K1, and the connecting shaft 3 passes through the first connecting hole H1 and the second connecting hole I1 to realize the connection between the first connecting piece 1 and the second connecting hole I1. Rotatable connection of the second link 2. The first connecting piece 1 is fixedly connected to one end of the lifting rod 321, the active rod 322, the support body 207, the driving assembly 2033 and the beam 2031 (for example, the lifting rod 321), and the second connecting member 2 is connected to the lifting rod 321, the active One end of the other (for example, the active rod 322) in the rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031 is fixedly connected to realize the lifting rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031. of two rotatable connections.
如图18所示,F1代表连接轴3的与第一连接件1的连接处受到的侧向剪切力,F2代表连接轴3的与第二连接件2的连接处受到的侧向剪切力。As shown in Figure 18, F1 represents the lateral shear force received by the joint of the connecting shaft 3 and the first connecting member 1, and F2 represents the lateral shearing force received by the connecting place of the connecting shaft 3 and the second connecting member 2 force.
图19为根据一些实施例的另一种可旋转连接处的连接结构的结构图,图20为根据一些实施例的另一种可旋转连接处的连接结构的受力分析图。Fig. 19 is a structural diagram of another connection structure of a rotatable connection according to some embodiments, and Fig. 20 is a force analysis diagram of another connection structure of a rotatable connection according to some embodiments.
在一些实施例中,如图19所示,上述可旋转连接处的多个连接结构中的至少一个连接结构为两侧夹持的连接结构,该两侧夹持的连接结构包括第二连接件2、第三连接件4和连接轴3,连接轴3分别与第二连接件2以及第三连接件4相连的。In some embodiments, as shown in FIG. 19 , at least one of the multiple connection structures at the above-mentioned rotatable connection is a connection structure clamped on both sides, and the connection structure clamped on both sides includes a second connecting member 2. The third connecting piece 4 and the connecting shaft 3, the connecting shaft 3 is connected to the second connecting piece 2 and the third connecting piece 4 respectively.
第三连接件4包括第三连接件本体41和与第三连接件本体41相连的两个侧壁42,两个侧壁42相对设置于第三连接件本体41的一侧。第二连接件2设置于两个侧壁42之间。每个侧壁42包括第三连接孔J1,连接轴3穿设于第二连接孔I1和第三连接孔J1,以实现第二连接件2和第三连接件4之间的可旋转连接。The third connecting piece 4 includes a third connecting piece body 41 and two sidewalls 42 connected to the third connecting piece body 41 , and the two sidewalls 42 are disposed opposite to one side of the third connecting piece body 41 . The second connecting member 2 is disposed between the two side walls 42 . Each side wall 42 includes a third connecting hole J1 , and the connecting shaft 3 passes through the second connecting hole I1 and the third connecting hole J1 to realize the rotatable connection between the second connecting member 2 and the third connecting member 4 .
第二连接件2与升降杆321、主动杆322、支撑体207、驱动组件2033和横梁2031中的一个(如,驱动组件2033)的一端固定连接,第三连接件4与升降杆321、主动杆322、支撑体207、驱动组件2033和横梁2031中的另一个(如,主动杆322)的一端固定连接,以实现升降杆321、主动杆322、支撑体207、驱动组件2033和横梁2031中的两个的可旋转连接。The second connecting piece 2 is fixedly connected with one end of the lifting rod 321, the active rod 322, the support body 207, the driving assembly 2033 and the beam 2031 (such as the driving assembly 2033), and the third connecting piece 4 is connected with the lifting rod 321, the active One end of the rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031 (such as the active rod 322) is fixedly connected to realize the lifting rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031. of two rotatable connections.
如图20所示,F2代表连接轴3的与第二连接件2的连接处受到的侧向剪切力,F3代表连接轴3的与第三连接件4的连接处受到的侧向剪切力,F2的方向与F3的方向相反,且F2=2F3,使得连接轴3的两端的剪切力与中部的剪切力相平衡,这样,可以减缓连接轴3的磨损,降低升降支架2032偏斜的概率,延长投影屏幕200的使用寿命。As shown in Figure 20, F2 represents the lateral shear force received by the joint of the connecting shaft 3 and the second connecting member 2, and F3 represents the lateral shearing force received by the connecting place of the connecting shaft 3 and the third connecting member 4 Force, the direction of F2 is opposite to the direction of F3, and F2=2F3, make the shearing force of the two ends of connecting shaft 3 and the shearing force of middle part balance, like this, can slow down the wearing and tearing of connecting shaft 3, reduce lifting bracket 2032 deflection The probability of inclination is reduced, and the service life of the projection screen 200 is extended.
如图20所示,两侧夹持的连接结构还包括支撑块5,支撑块5包括第四连接孔K1,连接轴3穿设于第四连接孔K1,支撑块5位于第三连接件4的一个侧壁42与第二连接件2之间。第二连接件2的一端表面可旋转地抵接在支撑块5上。这样,通过支撑块5对第二连接件2的支撑,有利于平衡连接轴3所受到的侧向剪切力,从而延长投影屏幕200的使用寿命。As shown in Figure 20, the connection structure clamped on both sides also includes a support block 5, the support block 5 includes a fourth connection hole K1, the connection shaft 3 is passed through the fourth connection hole K1, and the support block 5 is located on the third connection piece 4 Between one of the side walls 42 and the second connecting piece 2 . One end surface of the second connecting piece 2 is rotatably abutted against the supporting block 5 . In this way, the support of the second connecting member 2 by the supporting block 5 is beneficial to balance the lateral shearing force on the connecting shaft 3 , thereby prolonging the service life of the projection screen 200 .
支撑块5上靠近第二连接件2的一侧端面具有凹槽52,例如圆柱形凹槽,第二连接件2的一端包括与凹槽52相匹配的凸起,例如圆柱形凸起,第二连接件2的端部支撑在支撑块5上的凹槽内。这样,第二连接件2即可支撑在支撑块5上,且与支撑块5相对旋转。There is a groove 52 on the side end surface of the support block 5 close to the second connecting piece 2, such as a cylindrical groove, and one end of the second connecting piece 2 includes a protrusion matching the groove 52, such as a cylindrical protrusion. The ends of the two connectors 2 are supported in the grooves on the support block 5 . In this way, the second connecting member 2 can be supported on the support block 5 and relatively rotate with the support block 5 .
图21为根据一些实施例的又一种可旋转连接处的连接结构的结构图。Fig. 21 is a structural diagram of yet another connection structure of a rotatable connection according to some embodiments.
图21和图19相比,区别主要在于,图21中的第三连接件4为分体件,而图19中的第三连接件4为一体件。如图21所示,第三连接件4包括第一子连接件43和第二子连接件44,第二连接件2位于第一子连接件43和第二子连接件44之间。Compared with FIG. 21 and FIG. 19 , the main difference is that the third connecting piece 4 in FIG. 21 is a separate piece, while the third connecting piece 4 in FIG. 19 is a single piece. As shown in FIG. 21 , the third connecting part 4 includes a first sub-connecting part 43 and a second sub-connecting part 44 , and the second connecting part 2 is located between the first sub-connecting part 43 and the second sub-connecting part 44 .
第二连接件2与升降杆321、主动杆322、支撑体207、驱动组件2033和横梁2031中的一个的一端固定连接,第一子连接件43和第二子连接件44相对设置于升降杆321、主动杆322、支撑体207、驱动组件2033和横梁2031中的另一个的一端,以实现升降杆321、主动杆322、支撑体207、驱动组件2033和横梁2031中的两个的可旋转连接。The second connecting piece 2 is fixedly connected to one end of one of the lifting rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the beam 2031, and the first sub-connecting part 43 and the second sub-connecting part 44 are arranged opposite to the lifting rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the other end of the crossbeam 2031, to realize the rotatable movement of two of the elevating rod 321, the active rod 322, the support body 207, the drive assembly 2033 and the crossbeam 2031 connect.
需要说明的是,第一子连接件43与第二连接件2之间、或第二子连接件44与第二连接件2之间也可以设置有支撑块5,以通过支撑块5实现对第二连接件2的端部的支撑。It should be noted that a supporting block 5 may also be provided between the first sub-connecting part 43 and the second connecting part 2, or between the second sub-connecting part 44 and the second connecting part 2, so as to realize alignment through the supporting block 5. The support of the end of the second connecting piece 2 .
图22为根据一些实施例的另一种投影屏幕处于展开状态的结构图。Fig. 22 is a structural diagram of another projection screen in an unfolded state according to some embodiments.
在一些实施例中,如图16或图22所示,升降杆321包括从动杆3211和支撑杆3212;从动杆3211的第一端包括第三连接件4,支撑杆3212的第一端与横梁2031可旋转连接,支撑杆3212的第二端包括第二连接件2,从动杆3211的第一端和支撑杆3212的第二端形成上述的两侧夹持的连接结构。从动杆3211的第二端与支撑体207可旋转连接,主动杆322与从动杆3211可旋转连接。In some embodiments, as shown in FIG. 16 or FIG. 22 , the lifting rod 321 includes a driven rod 3211 and a supporting rod 3212; the first end of the driven rod 3211 includes a third connecting member 4, and the first end of the supporting rod 3212 It is rotatably connected with the beam 2031, the second end of the support rod 3212 includes the second connecting member 2, and the first end of the driven rod 3211 and the second end of the support rod 3212 form the above-mentioned connection structure clamped on both sides. The second end of the driven rod 3211 is rotatably connected to the support body 207 , and the active rod 322 is rotatably connected to the driven rod 3211 .
从动杆3211的第一端与支撑杆3212的第二端之间为两侧夹持的连接结构,从而在从动杆3211和支撑杆3212相对旋转时,避免了从动杆3211与支撑杆3212之间的连接轴3受到侧向剪切力的情况,有利于减缓此处连接轴3的磨损。在主动杆322升降时,主动杆322带动从动杆3211升降,从动杆3211带动支撑杆3212同步升降,以实现横梁2031的升起或下降。Between the first end of the driven rod 3211 and the second end of the supporting rod 3212 is a connection structure clamped on both sides, so that when the driven rod 3211 and the supporting rod 3212 rotate relatively, the driven rod 3211 and the supporting rod are avoided. The situation that the connecting shaft 3 between 3212 is subject to lateral shear force is beneficial to slow down the wear of the connecting shaft 3 here. When the active rod 322 is raised and lowered, the active rod 322 drives the driven rod 3211 to rise and fall, and the driven rod 3211 drives the supporting rod 3212 to rise and fall synchronously, so as to realize the raising or lowering of the beam 2031 .
其中,当从动杆3211与支撑杆3212之间的夹角变大时,可以实现横梁2031的升起,类似地,当从动杆3211与支撑杆3212之间的夹角变小时,可以实现横梁2031的下降。Wherein, when the angle between the driven rod 3211 and the support rod 3212 becomes larger, the rise of the crossbeam 2031 can be realized; similarly, when the angle between the driven rod 3211 and the support rod 3212 becomes smaller, the Transom 2031 drop.
从动杆3211的第一端包括支撑块5,支撑杆3212的第二端可旋转的抵接在支撑块5上。这样,通过支撑块5对支撑杆3212的支撑,能够避免从动杆3211与支撑杆3212之间的连接轴3受到侧向剪切力的情况,从而可以延长升降杆321的使用寿命。The first end of the driven rod 3211 includes a support block 5 , and the second end of the support rod 3212 is rotatably abutted against the support block 5 . In this way, the support of the support rod 3212 by the support block 5 can prevent the connection shaft 3 between the driven rod 3211 and the support rod 3212 from being subjected to lateral shearing force, thereby prolonging the service life of the lifting rod 321 .
在一些实施例中,如图22所示,主动杆322包括第一动力杆3221和第二动力杆3222;第一动力杆3221的第一端和第二动力杆3222的第一端分别位于从动杆3211相对的两侧,即第一动力杆3221的第一端和第二动力杆3222的第一端共同形成第三连接件4(即分体件),从动杆3211的一部分形成第二连接件2,第一动力杆3221的所述第一端、第二动力杆3222的所述第一端和从动杆3211的所述一部分形成上述的两侧夹持的连接结构,第一动力杆3221的第二端、第二动力杆3222的第二端均和驱动组件2033可旋转连接。In some embodiments, as shown in FIG. 22 , the active rod 322 includes a first power rod 3221 and a second power rod 3222; the first end of the first power rod 3221 and the first end of the second power rod 3222 are located respectively from The two opposite sides of the moving rod 3211, i.e. the first end of the first power rod 3221 and the first end of the second power rod 3222 jointly form the third connecting part 4 (i.e. split part), and a part of the driven rod 3211 forms the first Two connecting pieces 2, the first end of the first power rod 3221, the first end of the second power rod 3222 and the part of the driven rod 3211 form the above-mentioned connection structure clamped on both sides, the first Both the second end of the power rod 3221 and the second end of the second power rod 3222 are rotatably connected to the driving assembly 2033 .
在幕布被展开时,通过第一动力杆3221和第二动力杆3222对从动杆3211两侧的夹持,避免了位于第一动力杆3221、从动杆3211和第二动力杆3222之间的连接轴3受到侧向剪切力的情况,有利于减缓此处连接轴3的磨损。When the curtain is unfolded, through the first power rod 3221 and the second power rod 3222 clamping on both sides of the driven rod 3211, avoiding being between the first power rod 3221, the driven rod 3211 and the second power rod 3222 When the connecting shaft 3 is subject to lateral shear force, it is beneficial to slow down the wear of the connecting shaft 3 here.
在另一些实施例中,如图16所示,主动杆322包括第三动力杆3224、第四动力杆3225和辅助杆3223。In other embodiments, as shown in FIG. 16 , the active rod 322 includes a third power rod 3224 , a fourth power rod 3225 and an auxiliary rod 3223 .
辅助杆3223的第一端形成第三连接件4(即一体件),支撑杆3212的一部分位于第三连接件4的两个侧壁42之间,支撑杆3212中的所述一部分形成第二连接件2,辅助杆3223的第一端和支撑杆3212中的所述一部分形成两侧夹持的连接结构。The first end of the auxiliary rod 3223 forms the third connecting piece 4 (i.e. an integral part), a part of the supporting rod 3212 is located between the two side walls 42 of the third connecting member 4, and the part of the supporting rod 3212 forms the second The connecting piece 2, the first end of the auxiliary rod 3223 and the part of the supporting rod 3212 form a connection structure clamped on both sides.
第三动力杆3224的第一端和第四动力杆3225的第一端分别位于辅助杆3223的第二端相对的两侧,即第三动力杆3224的第一端和第四动力杆3225的第一端共同形成第三连接件4(即分体件),辅助杆3223的第二端形成第二连接件2,第三 动力杆3224的第一端、第四动力杆3225的第一端和辅助杆3223的第二端形成两侧夹持的连接结构。The first end of the third power rod 3224 and the first end of the fourth power rod 3225 are respectively located on opposite sides of the second end of the auxiliary rod 3223, that is, the first end of the third power rod 3224 and the end of the fourth power rod 3225. The first ends together form the third connecting piece 4 (i.e. split), the second end of the auxiliary rod 3223 forms the second connecting piece 2, the first end of the third power rod 3224, the first end of the fourth power rod 3225 and the second end of the auxiliary rod 3223 form a connection structure clamped on both sides.
第三动力杆3224的第二端、第四动力杆3225的第二端和驱动组件2033可旋转连接。从动杆3211位于第三动力杆3224和第四动力杆3225之间,第三动力杆3224的一部分和第四动力杆3225的一部分共同形成第三连接件4(即分体件),从动杆3211中的一部分形成第二连接件2,第三动力杆3224中的所述一部分、第四动力杆3225中的所述一部分和从动杆3211中的所述一部分形成两侧夹持的连接结构。The second end of the third power rod 3224, the second end of the fourth power rod 3225 and the driving assembly 2033 are rotatably connected. The driven rod 3211 is located between the third power rod 3224 and the fourth power rod 3225, and a part of the third power rod 3224 and a part of the fourth power rod 3225 jointly form the third connecting part 4 (ie, a split part). A part of the rod 3211 forms the second connecting member 2, and the part of the third power rod 3224, the part of the fourth power rod 3225 and the part of the driven rod 3211 form a connection clamped on both sides. structure.
在幕布被展开时,第三动力杆3224与从动杆3211,以及第四动力杆3225与从动杆3211均构成X形结构,辅助杆3223与支撑杆3212构成λ形结构,且通过第三动力杆3224和第四动力杆3225对从动杆3211两侧的夹持,避免了位于第三动力杆3224、第四动力杆3225和从动杆3211之间的连接轴3受到侧向剪切力的情况,有利于减缓此处连接轴3的磨损,以及通过辅助杆3223的第一端对支撑杆3212的两侧夹持,避免了位于辅助杆3223的第一端与支撑杆3212之间的连接轴3受到侧向剪切力的情况,有利于减缓此处连接轴3的磨损。When the curtain is unfolded, the third power rod 3224 and the driven rod 3211, and the fourth power rod 3225 and the driven rod 3211 form an X-shaped structure, and the auxiliary rod 3223 and the support rod 3212 form a λ-shaped structure, and pass through the third The clamping of both sides of the driven rod 3211 by the power rod 3224 and the fourth power rod 3225 prevents the connecting shaft 3 between the third power rod 3224, the fourth power rod 3225 and the driven rod 3211 from being subjected to lateral shearing The condition of the force is conducive to slowing down the wear of the connecting shaft 3 here, and clamping the two sides of the support rod 3212 by the first end of the auxiliary rod 3223, avoiding the position between the first end of the auxiliary rod 3223 and the support rod 3212 When the connecting shaft 3 is subject to lateral shear force, it is beneficial to slow down the wear of the connecting shaft 3 here.
在一些实施例中,如图15或图16所示,支撑体207包括板体2071,升降机构203设置在板体2071的远离地面的一侧表面(如上表面),投影屏幕200包括两个基座201,两个基座201设置在板体2071的上表面,且位于板体2071的长度方向上的两端,两个基座201垂直于板体2071。此时,卷曲机构204的两端分别与两个基座201连接,驱动组件2033与板体2071固定连接,升降杆321的第二端与板体2071可旋转连接。In some embodiments, as shown in FIG. 15 or FIG. 16 , the supporting body 207 includes a plate body 2071, the lifting mechanism 203 is arranged on the side surface (such as the upper surface) of the plate body 2071 away from the ground, and the projection screen 200 includes two base plates. Seats 201 , two bases 201 are arranged on the upper surface of the board body 2071 and located at both ends of the board body 2071 in the length direction, and the two bases 201 are perpendicular to the board body 2071 . At this time, both ends of the curling mechanism 204 are respectively connected to the two bases 201 , the driving assembly 2033 is fixedly connected to the plate body 2071 , and the second end of the lifting rod 321 is rotatably connected to the plate body 2071 .
图23为根据一些实施例的另一种投影屏幕处于收起状态的结构图;图24为图23中圈A处的局部放大图。FIG. 23 is a structural view of another projection screen in a retracted state according to some embodiments; FIG. 24 is a partially enlarged view of circle A in FIG. 23 .
在一些实施例中,如图23和图24所示,驱动组件2033包括第二驱动电机311、传送带组件312、第二丝杠313和多个第二滑块314,第二丝杠313与支撑体207可旋转连接,多个第二滑块314与第二丝杠313螺纹连接,多个第二滑块314与多个升降支架2032一一对应,主动杆322的第二端与对应的第二滑块314可旋转连接。In some embodiments, as shown in FIGS. 23 and 24 , the drive assembly 2033 includes a second drive motor 311 , a conveyor belt assembly 312 , a second lead screw 313 and a plurality of second sliders 314 , and the second lead screw 313 is connected to the support The body 207 is rotatably connected, the plurality of second sliders 314 are screwed to the second lead screw 313, the plurality of second sliders 314 correspond to the plurality of elevating brackets 2032 one by one, the second end of the active rod 322 corresponds to the corresponding first The two sliders 314 are rotatably connected.
当第二丝杠313旋转时,多个第二滑块314中的相邻两个第二滑块314相互靠近或相互远离;第二驱动电机311被配置为驱动第二丝杠313旋转。例如,第二驱动电机311的输出轴3111通过传送带组件312与第二丝杠313传动连接。When the second screw 313 rotates, two adjacent second sliders 314 among the plurality of second sliders 314 approach or move away from each other; the second driving motor 311 is configured to drive the second screw 313 to rotate. For example, the output shaft 3111 of the second driving motor 311 is in driving connection with the second lead screw 313 through the conveyor belt assembly 312 .
第二驱动电机311驱动幕布202升起或下降过程如下:The second drive motor 311 drives the curtain 202 to rise or fall as follows:
第二丝杠313与支撑体207可旋转连接,因此第二驱动电机311启动后可通过传送带组件312带动第二丝杠313原地旋转,第二丝杠313带动第二滑块314旋转,从而使得第二滑块314在第二丝杠313上移动,通过第二滑块314带动主动杆322的第二端同步移动,以实现主动杆322另一端的升起或下降;而在主动杆322升起或下降时,主动杆322能够带动升降杆321同步升起或下降,以实现横梁2031的升起或下降,进而实现幕布202的升起或下降。The second lead screw 313 is rotatably connected to the support body 207, so the second drive motor 311 can drive the second lead screw 313 to rotate in situ through the conveyor belt assembly 312 after the second drive motor 311 is started, and the second lead screw 313 drives the second slider 314 to rotate, thereby Make the second slide block 314 move on the second lead screw 313, drive the second end of the active rod 322 to move synchronously by the second slide block 314, to realize the rising or falling of the other end of the active rod 322; When rising or falling, the active rod 322 can drive the lifting rod 321 to rise or fall synchronously, so as to realize the rise or fall of the beam 2031 , and then realize the rise or fall of the curtain 202 .
第二驱动电机311的输出轴3111与第二丝杠313的长度方向平行,例如,第二驱动电机311位于第二丝杠313的靠近地面的一侧(如下侧),这样,有利于缩短升降机构203的整体长度,实现投影屏幕200的小型化。The output shaft 3111 of the second driving motor 311 is parallel to the length direction of the second leading screw 313. For example, the second driving motor 311 is positioned at the side (lower side) near the ground of the second leading screw 313. The overall length of the mechanism 203 realizes the miniaturization of the projection screen 200 .
图25为根据一些实施例的一种第二丝杠的结构图。Figure 25 is a structural diagram of a second lead screw according to some embodiments.
第二丝杠313为一体件,且第二丝杠313两端的螺纹的旋向相反,此时传送带组件312可连接在第二丝杠313的端部或者第二丝杠313的中间位置;或者,第二丝杠313为分体件,如图25所示,第二丝杠313包括第一子丝杠3131和第二子丝杠3132,此时传送带组件312同时与第一子丝杠3131和第二子丝杠3132的靠近彼此的位置处连接,即,传送带组件312连接在第一子丝杠3131和第二子丝杠3132之间的位置,连接后第一子丝杠3131和第二子丝杠3132的螺纹旋向相反。The second lead screw 313 is one piece, and the helical directions of the threads at both ends of the second lead screw 313 are opposite. At this time, the conveyor belt assembly 312 can be connected to the end of the second lead screw 313 or the middle position of the second lead screw 313; or , the second lead screw 313 is a split piece, as shown in Figure 25, the second lead screw 313 includes a first sub-screw 3131 and a second sub-screw 3132, at this time the conveyor belt assembly 312 is simultaneously connected with the first sub-screw 3131 and the second sub-screw 3132 are connected at positions close to each other, that is, the conveyor belt assembly 312 is connected at the position between the first sub-screw 3131 and the second sub-screw 3132, after the connection, the first sub-screw 3131 and the second sub-screw 3131 The screw threads of the two sub-leading screws 3132 are in opposite directions.
在一些实施例中,第二丝杠313包括的子丝杠数量可以大于两个,例如,第二丝杠313包括四个子丝杠、六个子丝杠或八个子丝杠等。In some embodiments, the second lead screw 313 may include more than two sub-screws, for example, the second lead screw 313 includes four sub-screws, six sub-screws, or eight sub-screws.
如图24所示,驱动组件2033还包括导向杆315,导向杆315固定在基座201上,多个第二滑块314与导向杆315可滑动连接,保证了第二滑块314滑动的稳定性。As shown in Figure 24, the driving assembly 2033 also includes a guide rod 315, the guide rod 315 is fixed on the base 201, and a plurality of second sliders 314 are slidably connected with the guide rod 315, which ensures the stability of the second slider 314 sliding sex.
在一些实施例中,传送带组件312被配置为对第二驱动电机311的转速进行降速,以降低第二丝杠313的旋转速度。In some embodiments, the conveyor belt assembly 312 is configured to decelerate the rotation speed of the second driving motor 311 to reduce the rotation speed of the second lead screw 313 .
传送带组件312包括至少一级带轮组件,每级带轮组件包括从动轮、主动轮和分别与主动轮和从动轮传动连接的传送带,主动轮的直径小于从动轮的直径,且相邻两级带轮组件中其中一级带轮组件的从动轮与另一级带轮组件中的主动轮同轴固定连接。The conveyor belt assembly 312 includes at least one stage of pulley assembly, each stage of pulley assembly includes a driven pulley, a driving pulley, and a conveyor belt respectively connected to the driving pulley and the driven pulley, the diameter of the driving pulley is smaller than the diameter of the driven pulley, and two adjacent stages In the pulley assembly, the driven pulley of one stage of the pulley assembly is coaxially fixedly connected with the driving pulley of the other stage of the pulley assembly.
图26为根据一些实施例的一种传送带组件的结构图。Figure 26 is a block diagram of a conveyor belt assembly according to some embodiments.
以下主要以传送带组件312包括两级带轮组件为例进行说明,如图26所示,传送带组件312包括变速箱体3121、第一带轮3122、第二带轮3123、第三带轮3124、第一传送带3125和第二传送带3126。The following mainly takes the conveyor belt assembly 312 including a two-stage pulley assembly as an example for illustration. As shown in FIG. The first conveyor belt 3125 and the second conveyor belt 3126 .
第一带轮3122和第二带轮3123分别与变速箱体3121可旋转连接,第一带轮3122与第二驱动电机311的输出轴3111固定连接,第三带轮3124套设在第二丝杠313上,且与第二丝杠313固定连接。第二带轮3123包括第一圆槽3123A和第二圆槽3123B,第一圆槽3123A的直径大于第二圆槽3123B的直径。第一传送带3125套在第二带轮3123的第一圆槽3123A和第一带轮3122上,第二传送带3126套设在第二带轮3123的第二圆槽3123B和第三带轮3124上。The first pulley 3122 and the second pulley 3123 are respectively rotatably connected to the gearbox body 3121, the first pulley 3122 is fixedly connected to the output shaft 3111 of the second driving motor 311, and the third pulley 3124 is sleeved on the second wire On the rod 313, and fixedly connected with the second lead screw 313. The second pulley 3123 includes a first circular groove 3123A and a second circular groove 3123B, and the diameter of the first circular groove 3123A is larger than that of the second circular groove 3123B. The first conveyor belt 3125 is set on the first circular groove 3123A of the second pulley 3123 and the first pulley 3122, and the second conveyor belt 3126 is set on the second circular groove 3123B of the second pulley 3123 and the third pulley 3124 .
第一带轮3122作为第一级带轮组件的主动轮,第二带轮3123上的第一圆槽3123A作为第一级带轮组件的从动轮,第二带轮3123上的第二圆槽3123B作为第二级带轮组件的主动轮,第三带轮3124作为第二级带轮组件的从动轮,第一带轮3122的外径小于第二带轮3123的第一圆槽3123A的直径,第二带轮3123的第二圆槽3123B的外径小于第三带轮3124的直径。这样,通过两级带轮组件可以降低第二驱动电机311的转速,从而降低第二丝杠313的转速。The first pulley 3122 is used as the driving pulley of the first-stage pulley assembly, the first circular groove 3123A on the second pulley 3123 is used as the driven pulley of the first-stage pulley assembly, and the second circular groove on the second pulley 3123 is 3123B is used as the driving pulley of the second-stage pulley assembly, the third pulley 3124 is used as the driven pulley of the second-stage pulley assembly, and the outer diameter of the first pulley 3122 is smaller than the diameter of the first circular groove 3123A of the second pulley 3123 , the outer diameter of the second circular groove 3123B of the second pulley 3123 is smaller than the diameter of the third pulley 3124 . In this way, the rotation speed of the second driving motor 311 can be reduced through the two-stage pulley assembly, thereby reducing the rotation speed of the second lead screw 313 .
需要说明的是,通过传送带组件312带动第二丝杠313旋转时,为了避免各个带轮和对应传送带之间打滑,如图26所示,传送带组件312还包括限位件3127,限位件3127与变速箱体3121可移动连接,限位件3127压紧在第一传送带3125或第二传送带3126的背离对应带轮的一侧表面。这样,通过限位件3127绷紧第一传送带3125或第二传送带3126,可以避免传送带与对应带轮之间打滑。It should be noted that, when the conveyor belt assembly 312 drives the second lead screw 313 to rotate, in order to avoid slipping between each pulley and the corresponding conveyor belt, as shown in FIG. It is movably connected with the gearbox body 3121 , and the limiting member 3127 is pressed against the surface of the first conveyor belt 3125 or the second conveyor belt 3126 away from the corresponding pulley. In this way, by tightening the first conveyor belt 3125 or the second conveyor belt 3126 through the limiting member 3127, slipping between the conveyor belt and the corresponding pulley can be avoided.
图27为根据一些实施例的一种幕布的局部结构图,图28为图27中圈D处的局部放大图。Fig. 27 is a partial structural view of a curtain according to some embodiments, and Fig. 28 is a partial enlarged view at circle D in Fig. 27 .
如图27和图28所示,光学膜片2021沿卷曲机构204的长度方向的尺寸小于柔性载体2022沿卷曲机构204的长度方向的尺寸。这样,在柔性载体2022上固定光学膜片2021时,光学膜片2021的边缘不会位于柔性载体2022外,从而提高光学膜片2021的固定效率。As shown in FIG. 27 and FIG. 28 , the dimension of the optical film 2021 along the length direction of the curling mechanism 204 is smaller than the dimension of the flexible carrier 2022 along the length direction of the curling mechanism 204 . In this way, when the optical film 2021 is fixed on the flexible carrier 2022, the edge of the optical film 2021 will not be located outside the flexible carrier 2022, thereby improving the fixing efficiency of the optical film 2021.
在一些实施例中,光学膜片2021沿卷曲机构204的长度方向的尺寸也可以等于柔性载体2022沿卷曲机构204的长度方向的尺寸。这样在固定光学膜片2021时,便于将光学膜片2021的边缘与柔性载体2022的边缘对齐,并且,显示画面可以整个幕布202,从而提高幕布202的画面显示效果。In some embodiments, the dimension of the optical film 2021 along the length direction of the curling mechanism 204 may also be equal to the dimension of the flexible carrier 2022 along the length direction of the curling mechanism 204 . In this way, when the optical film 2021 is fixed, it is convenient to align the edge of the optical film 2021 with the edge of the flexible carrier 2022 , and the display picture can be the entire curtain 202 , thereby improving the picture display effect of the curtain 202 .
如图5至图7所示,投影屏幕还包括多个拉紧机构206,多个拉紧机构206中的每个拉紧机构206的两端分别与卷曲机构204以及横梁2031固定连接。每个拉紧机构206的一部分(如除两端之外的中间部分)与幕布202固定,且拉紧机构206在幕布202所在平面上的正投影位于幕布202上,从而避免了拉紧机构206的中间部分的裸露,提高了投影屏幕的美观性。As shown in FIG. 5 to FIG. 7 , the projection screen further includes a plurality of tensioning mechanisms 206 , and two ends of each tensioning mechanism 206 in the plurality of tensioning mechanisms 206 are respectively fixedly connected to the curling mechanism 204 and the beam 2031 . A part of each tensioning mechanism 206 (such as the middle part except two ends) is fixed with the screen 202, and the orthographic projection of the tensioning mechanism 206 on the plane where the screen 202 is located is located on the screen 202, thereby avoiding the tensioning mechanism 206 The exposed middle part of the projection screen improves the aesthetics of the projection screen.
上述实施例能够在幕布202展开时,通过拉紧机构206使幕布202处于绷紧状 态,避免幕布202发生变形的情况。同时,幕布202受到的与幕布202的第一侧边202A平行的应力可分散在多个拉紧机构206上,降低了幕布202发生变形的概率。The foregoing embodiment can make the curtain 202 in a taut state by the tension mechanism 206 when the curtain 202 is unfolded, so as to avoid deformation of the curtain 202. At the same time, the stress parallel to the first side 202A of the curtain 202 experienced by the curtain 202 can be distributed among the multiple tensioning mechanisms 206 , reducing the possibility of deformation of the curtain 202 .
在一些实施例中,拉紧机构206的长度方向与幕布202的第一侧边202A垂直,这样,幕布202受到的与幕布202的第一侧边202A平行的应力能够较大限度的分散在拉紧机构206上,减小了幕布202所承受的应力。In some embodiments, the length direction of the tensioning mechanism 206 is perpendicular to the first side 202A of the curtain 202, so that the stress parallel to the first side 202A of the curtain 202 that the curtain 202 is subjected to can be largely dispersed in the tension. On the tightening mechanism 206, the stress that the curtain 202 bears is reduced.
在一些实施例中,拉紧机构206可采用拉伸模量较大的材料。例如,拉紧机构206为渔线、尼龙线或钢丝绳等。这样,可以避免拉紧机构206出现弯曲变形的情况,改善拉紧机构206对幕布202的拉紧效果。In some embodiments, the tensioning mechanism 206 may use a material with a relatively high tensile modulus. For example, the tensioning mechanism 206 is a fishing line, a nylon line, or a steel wire rope. In this way, the bending deformation of the tensioning mechanism 206 can be avoided, and the tensioning effect of the tensioning mechanism 206 on the screen 202 can be improved.
在一些实施例中,当幕布202包括光学膜片2021时,光学膜片2021的一侧表面(例如,正面)被配置为显示画面,拉紧机构206设置在光学膜片2021的与所述一侧表面相对的表面(例如,背面),或者拉紧机构206与光学膜片2021为一体结构。In some embodiments, when the curtain 202 includes an optical film 2021, one side surface (for example, the front side) of the optical film 2021 is configured to display a picture, and the tensioning mechanism 206 is arranged on the side of the optical film 2021 and the one side of the optical film 2021. The surface opposite to the side surface (for example, the back surface), or the tension mechanism 206 and the optical film 2021 are integrally structured.
当拉紧机构206设置在光学膜片2021背面时,拉紧机构206与光学膜片2021的背面固定连接。图29为根据一些实施例的另一种幕布的局部结构图。When the tensioning mechanism 206 is arranged on the back of the optical film 2021 , the tensioning mechanism 206 is fixedly connected to the back of the optical film 2021 . Figure 29 is a partial structural view of another screen according to some embodiments.
拉紧机构206与光学膜片2021的连接方式可以通过如下方式:拉紧机构206与光学膜片2021的背面通过粘接等方式固定连接。或者,如图29所示,幕布202还包括容置兜2023,容置兜2023设置于光学膜片2021的垂直于第一侧边202A的一侧边,拉紧机构206穿设于容置兜2023,以实现对拉紧机构206的中间部分的固定。当然,拉紧机构206与光学膜片2021的连接方式不限于此。The connection manner between the tensioning mechanism 206 and the optical film 2021 may be as follows: the tensioning mechanism 206 is fixedly connected to the back of the optical film 2021 by bonding or the like. Or, as shown in FIG. 29 , the curtain 202 further includes an accommodating pocket 2023, the accommodating pocket 2023 is arranged on one side of the optical film 2021 perpendicular to the first side 202A, and the tensioning mechanism 206 is passed through the accommodating pocket. 2023, to realize the fixation of the middle part of the tensioning mechanism 206. Certainly, the connection manner between the tensioning mechanism 206 and the optical film 2021 is not limited to this.
在一些实施例中,当幕布202包括柔性载体2022和光学膜片2021时,由于柔性载体2022不会影响显示画面,因此可以将拉紧机构206的中间部分设置在柔性载体2022上,当然,也可以将拉紧机构206的中间部分设置在光学膜片2021的背面。In some embodiments, when the curtain 202 includes a flexible carrier 2022 and an optical film 2021, since the flexible carrier 2022 will not affect the display screen, the middle part of the tensioning mechanism 206 can be arranged on the flexible carrier 2022, of course, also The middle part of the tensioning mechanism 206 can be disposed on the back of the optical film 2021 .
在拉紧机构206设置在柔性载体2022上的情况下,拉紧机构206的中间部分可以与柔性载体2022固定连接。或者,如图27和图28所示,容置兜2023设置于柔性载体2022的背面,拉紧机构206穿设于容置兜2023实现对拉紧机构206的中间部分的固定。In the case that the tensioning mechanism 206 is disposed on the flexible carrier 2022 , the middle part of the tensioning mechanism 206 can be fixedly connected with the flexible carrier 2022 . Alternatively, as shown in FIG. 27 and FIG. 28 , the accommodation pocket 2023 is disposed on the back of the flexible carrier 2022 , and the tightening mechanism 206 is passed through the accommodation pocket 2023 to fix the middle part of the tension mechanism 206 .
例如,柔性载体2022上与幕布202的第一侧边202A的长度方向垂直的两条侧边沿柔性载体2022的背面翻折并与柔性载体2022的背面固定,以得到容置兜2023。此时容置兜2023位于柔性载体2022的背面,这样,不仅可以避免容置兜2023裸露,还避免了拉紧机构206的裸露,提高了投影屏幕整体的美观性。For example, two sides of the flexible carrier 2022 perpendicular to the length direction of the first side 202A of the curtain 202 are folded along the back of the flexible carrier 2022 and fixed to the back of the flexible carrier 2022 to obtain the accommodating pocket 2023 . At this time, the accommodating pocket 2023 is located on the back of the flexible carrier 2022. In this way, not only the accommodating pocket 2023 can be avoided from being exposed, but also the tensioning mechanism 206 can be avoided, which improves the overall aesthetics of the projection screen.
当拉紧机构206与柔性载体2022固定连接时,拉紧机构206位于柔性载体2022的背面,即,拉紧机构206与柔性载体2022的背面固定连接,或者,拉紧机构206固定在柔性载体2022的正面。当然,拉紧机构206也可以与柔性载体2022为一体结构。When the tensioning mechanism 206 is fixedly connected to the flexible carrier 2022, the tensioning mechanism 206 is located at the back of the flexible carrier 2022, that is, the tensioning mechanism 206 is fixedly connected to the back of the flexible carrier 2022, or the tensioning mechanism 206 is fixed on the flexible carrier 2022 front. Of course, the tensioning mechanism 206 can also be integrated with the flexible carrier 2022 .
当拉紧机构206固定在柔性载体2022的正面时,为了避免因拉紧机构206的裸露而影响投影屏幕的美观性,拉紧机构206的材料为透明材料。例如,拉紧机构206为透明渔线。When the tension mechanism 206 is fixed on the front of the flexible carrier 2022, in order to avoid affecting the aesthetics of the projection screen due to the exposure of the tension mechanism 206, the material of the tension mechanism 206 is a transparent material. For example, tensioning mechanism 206 is a transparent fishing line.
图30为根据一些实施例的又一种投影屏幕的结构图,图31为图30中圈E处的局部放大图,图32为图30中圈F处的局部放大图,图33为图30中圈G处的局部放大图,图34为图30中圈H处的局部放大图。Fig. 30 is a structural diagram of another projection screen according to some embodiments, Fig. 31 is a partial enlarged view of circle E in Fig. 30, Fig. 32 is a partial enlarged view of circle F in Fig. 30, and Fig. 33 is a partial enlarged view of circle F in Fig. 30 The partial enlarged view at the middle circle G, and Fig. 34 is the partial enlarged view at the middle circle H in Fig. 30 .
在一些实施例中,如图30至图34所示,多个拉紧机构206包括第一拉紧件2061和第二拉紧件2062,第一拉紧件2061设置在幕布202的与第一侧边202A垂直的一侧边(例如,第三侧边202C)的位置,第二拉紧件2062设置在幕布202与第一侧边202A垂直的另一侧边(例如,第四侧边202D)的位置,第三侧边202C和第四侧边202D相对。这样,通过第一拉紧件2061即可拉紧幕布202的第三侧边202C,通过第二拉紧件2062即可拉紧幕布202的第四侧边202D,且通过第一拉紧件2061和第二拉紧件2062的配合,可以对幕布202在与第一侧边202A平行的方向上的受 力进行分散,从而可以保证多个拉紧件4对幕布202的拉紧效果。当第一拉紧件2061和第二拉紧件2062对幕布202的第三侧边202C和第四侧边202D的受力进行分散时,为了更好的保证第一拉紧件2061和第二拉紧件2062在与第一侧边202A平行的方向上对幕布202的拉紧效果,如图30至图34所示,第一拉紧件2061的第一端、第二拉紧件2062的第一端分别与横梁2031连接,当幕布202的第一侧边202A的长度小于横梁2031的长度时,第一拉紧件2061的第一端偏向对应的横梁2031的一端,第二拉紧件2062的第一端偏向对应的横梁的一端,即,第一拉紧件2061连接横梁的一端与第二拉紧件2062连接横梁的一端之间的距离大于幕布202的第一侧边202A的长度。In some embodiments, as shown in FIG. 30 to FIG. 34 , the multiple tensioning mechanisms 206 include a first tensioning member 2061 and a second tensioning member 2062, and the first tensioning member 2061 is arranged on the curtain 202 and the first tensioning member 2062. side 202A vertical side (for example, the third side 202C), the second tension member 2062 is arranged on the other side of the curtain 202 perpendicular to the first side 202A (for example, the fourth side 202D ), the third side 202C is opposite to the fourth side 202D. In this way, the third side 202C of the screen 202 can be tightened by the first tensioning member 2061, the fourth side 202D of the curtain 202 can be tightened by the second tensioning member 2062, and the third side 202D of the curtain 202 can be tightened by the first tensioning member 2061. Cooperating with the second tensioning member 2062 can disperse the force on the screen 202 in the direction parallel to the first side 202A, thereby ensuring the tensioning effect of the multiple tensioning members 4 on the screen 202 . When the first tension member 2061 and the second tension member 2062 distribute the force on the third side 202C and the fourth side 202D of the curtain 202, in order to better ensure that the first tension member 2061 and the second tension The tensioning effect of the tensioning member 2062 on the curtain 202 in the direction parallel to the first side 202A, as shown in FIGS. 30 to 34 , the first end of the first tensioning member 2061, the The first ends are respectively connected to the beams 2031. When the length of the first side 202A of the curtain 202 is less than the length of the beams 2031, the first ends of the first tensioning members 2061 are biased toward one end of the corresponding beams 2031, and the second tensioning members The first end of 2062 is biased toward one end of the corresponding beam, that is, the distance between the end of the first tensioning member 2061 connected to the beam and the end of the second tensioning member 2062 connected to the beam is greater than the length of the first side 202A of the curtain 202 .
第一拉紧件2061的第二端、第二拉紧件2062的第二端与卷曲机构204连接,当幕布202的第二侧边202B的长度小于卷曲机构204的长度时,第一拉紧件2061的第二端偏向对应的卷曲机构204的一端,第二拉紧件2062的第二端偏向对应的卷曲机构204的一端,即,第一拉紧件2061连接卷曲机构204的一端与第二拉紧件2062连接卷曲机构204的一端之间的距离大于幕布202的第二侧边202B的长度。The second end of the first tensioning member 2061 and the second end of the second tensioning member 2062 are connected to the curling mechanism 204. When the length of the second side 202B of the curtain 202 is less than the length of the curling mechanism 204, the first tensioning The second end of the member 2061 is biased toward one end of the corresponding curling mechanism 204, and the second end of the second tensioning member 2062 is biased toward one end of the corresponding curling mechanism 204, that is, the first tensioning member 2061 is connected to one end of the curling mechanism 204 and the second tensioning member 2061. The distance between the ends of the two tension members 2062 connected to the curling mechanism 204 is greater than the length of the second side 202B of the curtain 202 .
这样,当第一拉紧件2061和第二拉紧件2062绷紧时,能够在与幕布202的第一侧边202A平行的方向上对幕布202施加背向中心的作用力,从而通过该作用力抵消幕布202朝向幕布202中心的应力,提高第一拉紧件2061和第二拉紧件2062对幕布202的第三侧边202C和第四侧边202D的拉紧效果,解决了幕布202变形的问题。In this way, when the first tensioning member 2061 and the second tensioning member 2062 are tightened, a force acting away from the center can be applied to the curtain 202 in a direction parallel to the first side 202A of the curtain 202, thereby The force offsets the stress of the curtain 202 towards the center of the curtain 202, improves the tension effect of the first tension member 2061 and the second tension member 2062 on the third side 202C and the fourth side 202D of the curtain 202, and solves the deformation of the curtain 202 The problem.
以上所述,仅为本公开的具体实施方式,但本公开的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本公开揭露的技术范围内,想到变化或替换,都应涵盖在本公开的保护范围之内。因此,本公开的保护范围应以所述权利要求的保护范围为准。The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Anyone familiar with the technical field who thinks of changes or substitutions within the technical scope of the present disclosure should cover all within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the protection scope of the claims.
Claims (20)
- 一种投影装置,包括:A projection device comprising:投影屏幕,被配置为显示投影画面,所述投影屏幕包括:A projection screen configured to display a projection screen, the projection screen comprising:基座;base;升降机构,所述升降机构与所述基座连接;a lifting mechanism, the lifting mechanism is connected to the base;幕布,所述幕布的第一侧边与所述升降机构连接;a curtain, the first side of the curtain is connected to the lifting mechanism;卷曲机构,所述卷曲机构与所述幕布的第二侧边连接;和a curling mechanism coupled to the second side of the screen; and控制机构,所述控制机构设置在所述基座上,且与所述卷曲机构连接,所述控制机构被配置为:控制所述卷曲机构移动,带动所述卷曲机构卷起所述第二侧边,以调节所述幕布的俯仰角度;和A control mechanism, the control mechanism is arranged on the base and connected to the curling mechanism, the control mechanism is configured to: control the movement of the curling mechanism, and drive the curling mechanism to roll up the second side side to adjust the pitch angle of the screen; and光学引擎,被配置为将光束出射至所述投影屏幕。The optical engine is configured to emit light beams to the projection screen.
- 根据权利要求1所述的投影装置,其中,所述控制机构包括:The projection device according to claim 1, wherein the control mechanism comprises:第一滑块,所述第一滑块与所述基座滑动连接,且所述第一滑块与所述卷曲机构连接;和a first slider, the first slider is slidably connected to the base, and the first slider is connected to the curling mechanism; and调节杆,所述调节杆与所述第一滑块连接,被配置为带动所述第一滑块在所述基座上滑动,以带动所述卷曲机构移动。The adjusting rod, which is connected to the first slider, is configured to drive the first slider to slide on the base, so as to drive the curling mechanism to move.
- 根据权利要求2所述的投影装置,其中,所述调节杆为第一丝杠,所述第一丝杠与所述第一滑块螺纹连接。The projection device according to claim 2, wherein the adjusting rod is a first lead screw, and the first lead screw is screwed to the first slider.
- 根据权利要求2所述的投影装置,其中,所述控制机构还包括:The projection device according to claim 2, wherein the control mechanism further comprises:第一驱动电机,所述第一驱动电机设置在所述基座上,且所述第一驱动电机的输出轴与所述调节杆连接。A first drive motor, the first drive motor is arranged on the base, and the output shaft of the first drive motor is connected to the adjustment rod.
- 根据权利要求2所述的投影装置,其中,The projection device according to claim 2, wherein,所述调节杆为伸缩杆;The adjusting rod is a telescopic rod;所述控制机构还包括:The control mechanism also includes:控制本体,所述控制本体与所述基座连接,所述控制本体包括容纳腔,所述伸缩杆的一部分位于所述容纳腔内,且所述伸缩杆的远离所述控制本体的一端与所述第一滑块连接,所述控制本体被配置为控制所述伸缩杆在所述容纳腔内伸缩,以带动所述第一滑块在所述基座上滑动。A control body, the control body is connected to the base, the control body includes a housing chamber, a part of the telescopic rod is located in the housing chamber, and an end of the telescopic rod far away from the control body is connected to the The first slider is connected, and the control body is configured to control the expansion and contraction of the telescopic rod in the accommodating cavity, so as to drive the first slider to slide on the base.
- 根据权利要求2所述的投影装置,其中,所述第一滑块包括:第一通孔,所述调节杆穿设于所述第一通孔,且所述第一滑块相对所述调节杆可滑动;和The projection device according to claim 2, wherein the first slider comprises: a first through hole, the adjustment rod is passed through the first through hole, and the first slider is adjusted relative to the first through hole. the rod is slidable; and第二通孔,所述卷曲机构的一端穿设于所述第二通孔内,以使所述卷曲机构与所述第一滑块相连。The second through hole, one end of the curling mechanism is passed through the second through hole, so that the curling mechanism is connected with the first slider.
- 根据权利要求1所述的投影装置,其中,所述升降机构包括:The projection device according to claim 1, wherein the lifting mechanism comprises:横梁,所述横梁与所述幕布的所述第一侧边连接;a beam connected to the first side of the screen;驱动组件,所述驱动组件与所述基座连接;a drive assembly connected to the base;升降架,所述升降架包括升降杆和主动杆,所述升降杆的两端分别与所述基座和所述横梁可旋转连接,所述主动杆的两端分别与所述驱动组件和所述升降杆可旋转连接,所述驱动组件被配置为带动所述主动杆的一端移动,以通过所述主动杆的另一端和所述升降杆的升起或下降,带动所述横梁的升起或降下。Lifting frame, the lifting frame includes a lifting rod and an active rod, the two ends of the lifting rod are respectively rotatably connected to the base and the beam, and the two ends of the active rod are respectively connected to the drive assembly and the The lifting rod is rotatably connected, and the driving assembly is configured to drive one end of the active rod to move, so as to drive the rise of the crossbeam by raising or lowering the other end of the active rod and the lifting rod. or lower.
- 根据权利要求7所述的投影装置,其中,所述升降机构还包括:The projection device according to claim 7, wherein the lifting mechanism further comprises:多个连接结构,所述升降杆的两端与所述基座和所述横梁之间通过所述多个连接结构可旋转连接、所述主动杆的两端与所述驱动组件和所述升降杆之间通过所述多个连接结构可旋转连接;每个连接结构包括第一连接件、第二连接件和连接轴,所述第一连接件和所述第二连接件分别位于所述连接轴的沿轴的两侧,所述第一连接件和所述第二连接件朝远离彼此的方向延伸,所述连接轴穿设于所述第一连接件和所述第二连接件。A plurality of connecting structures, the two ends of the lifting rod are rotatably connected with the base and the beam through the multiple connecting structures, the two ends of the active rod are connected with the driving assembly and the lifting rod The rods are rotatably connected through the plurality of connecting structures; each connecting structure includes a first connecting piece, a second connecting piece and a connecting shaft, and the first connecting piece and the second connecting piece are respectively located at the connecting On both sides of the shaft along the shaft, the first connecting piece and the second connecting piece extend away from each other, and the connecting shaft passes through the first connecting piece and the second connecting piece.
- 根据权利要求7所述的投影装置,其中,所述升降机构还包括:The projection device according to claim 7, wherein the lifting mechanism further comprises:多个连接结构,所述升降杆的两端与所述基座和所述横梁之间通过所述多个连接结构可旋转连接、所述主动杆的两端与所述驱动组件和所述升降杆之间通过所述 多个连接结构可旋转连接;所述多个连接结构中的至少一个为两侧夹持的连接结构,所述两侧夹持的连接结构包括所述第二连接件、第三连接件和连接轴,所述第三连接件被配置为对所述第二连接件的相对的两侧夹持,且所述连接轴穿设于所述第二连接件和第三连接件。A plurality of connecting structures, the two ends of the lifting rod are rotatably connected with the base and the beam through the multiple connecting structures, the two ends of the active rod are connected with the driving assembly and the lifting rod The rods are rotatably connected through the plurality of connection structures; at least one of the plurality of connection structures is a connection structure clamped on both sides, and the connection structure clamped on both sides includes the second connecting piece, A third connecting piece and a connecting shaft, the third connecting piece is configured to clamp opposite sides of the second connecting piece, and the connecting shaft passes through the second connecting piece and the third connecting piece pieces.
- 根据权利要求9所述的投影装置,其中,所述第三连接件满足以下之一:The projection device according to claim 9, wherein the third connecting member satisfies one of the following:所述第三连接件包括第三连接件本体和两个侧壁,所述两个侧壁相对设置于所述第三连接件本体的同一侧,且位于所述第二连接件的相对的所述两侧,且所述连接轴穿设于所述第二连接件和所述两个侧壁;The third connector includes a third connector body and two side walls, the two side walls are oppositely disposed on the same side of the third connector body, and are located on opposite sides of the second connector. The two sides, and the connecting shaft passes through the second connecting piece and the two side walls;或者,or,所述第三连接件包括第一子连接件和第二子连接件,所述第一子连接件和第二子连接件设置于所述第二连接件的相对的所述两侧,且所述连接轴穿设于第一子连接件、所述第二连接件和第二子连接件。The third connecting piece includes a first sub-connecting piece and a second sub-connecting piece, the first sub-connecting piece and the second sub-connecting piece are arranged on opposite sides of the second connecting piece, and the The connection shaft passes through the first sub-connection piece, the second connection piece and the second sub-connection piece.
- 根据权利要求9所述的投影装置,其中,所述两侧夹持的连接结构还包括支撑块,所述支撑块设置于所述第二连接件和所述第三连接件之间,所述第二连接件的一侧表面抵接在所述支撑块上,所述连接轴穿设于所述支撑块。The projection device according to claim 9, wherein the connection structure clamped on both sides further includes a support block, the support block is arranged between the second connection part and the third connection part, the One side surface of the second connecting piece abuts against the supporting block, and the connecting shaft passes through the supporting block.
- 根据权利要求9所述的投影装置,其中,所述升降杆包括:The projection device according to claim 9, wherein the lifting rod comprises:支撑杆,所述支撑杆的第一端与所述横梁可旋转连接;和a support rod, the first end of which is rotatably connected to the beam; and从动杆,所述从动杆的第一端与所述支撑杆的第二端通过所述两侧夹持的连接结构可旋转连接,所述从动杆的第二端与所述基座可旋转连接。The driven rod, the first end of the driven rod is rotatably connected to the second end of the support rod through the connection structure clamped by the two sides, and the second end of the driven rod is connected to the base Rotatable connection.
- 根据权利要求12所述的投影装置,其中,所述主动杆包括第一动力杆和第二动力杆;所述第一动力杆的第一端和所述第二动力杆的第一端共同构造成所述第三连接件,所述从动杆的一部分构造成所述第二连接件,且所述第一动力杆的所述第一端、所述第二动力杆的所述第一端和所述从动杆中的所述一部分构造成所述两侧夹持的连接结构;The projection device according to claim 12, wherein the active rod comprises a first power rod and a second power rod; the first end of the first power rod and the first end of the second power rod are jointly configured as the third connecting piece, a part of the driven rod is configured as the second connecting piece, and the first end of the first power rod, the first end of the second power rod and the part of the driven rod are configured as a connection structure clamped by the two sides;所述第一动力杆的第二端、所述第二动力杆的第二端与所述驱动组件可旋转连接。The second end of the first power rod and the second end of the second power rod are rotatably connected to the driving assembly.
- 根据权利要求12所述的投影装置,其中,所述主动杆包括第三动力杆、第四动力杆和辅助杆;The projection device according to claim 12, wherein the active lever comprises a third power lever, a fourth power lever and an auxiliary lever;所述第三动力杆的第一端和所述第四动力杆的第一端共同构造成所述第三连接件,所述辅助杆中的一部分构造成所述第二连接件,且所述第三动力杆的所述第一端、第四动力杆的所述第一端和所述辅助杆中的所述一部分构造成所述两侧夹持的连接结构;The first end of the third power rod and the first end of the fourth power rod are jointly configured as the third connecting member, a part of the auxiliary rod is configured as the second connecting member, and the The first end of the third power rod, the first end of the fourth power rod and the part of the auxiliary rod are configured as a connection structure sandwiched by both sides;所述第三动力杆的第二端、所述第四动力杆的第二端与所述驱动组件可旋转连接;The second end of the third power rod and the second end of the fourth power rod are rotatably connected to the drive assembly;所述从动杆的一部分构造成所述第二连接件,所述第三动力杆的一部分和所述第四动力杆的一部分共同构造成所述第三连接件,且所述从动杆的所述一部分、所述第三动力杆的所述一部分和所述第四动力杆的所述一部分构造成所述两侧夹持的连接结构;A part of the driven rod is configured as the second connecting member, a part of the third power rod and a part of the fourth power rod are jointly configured as the third connecting member, and the driven rod The part, the part of the third power rod and the part of the fourth power rod are configured as a connection structure clamped on both sides;所述辅助杆的第一端形成所述第三连接件,所述支撑杆的一部分构造成所述第二连接件,且所述辅助杆的所述第一端和所述支撑杆的所述一部分构造成所述两侧夹持的连接结构。The first end of the auxiliary rod forms the third connecting member, a part of the supporting rod is configured as the second connecting member, and the first end of the auxiliary rod and the supporting rod A part is configured as the connection structure clamped by the two sides.
- 根据权利要求7所述的投影装置,其中,所述驱动组件包括:The projection device according to claim 7, wherein the drive assembly comprises:第二驱动电机;second drive motor;传送带组件,所述第二驱动电机的输出轴与所述传送带组件传动连接;a conveyor belt assembly, the output shaft of the second driving motor is connected to the conveyor belt assembly;第二丝杠,所述第二丝杠与所述传送带组件传动连接,且所述第二丝杠分别与所述基座以及所述主动杆可旋转连接;和a second lead screw, the second lead screw is in transmission connection with the conveyor belt assembly, and the second lead screw is rotatably connected with the base and the active rod respectively; and第二滑块,所述第二滑块与所述第二丝杠螺纹连接。A second slide block, the second slide block is threadedly connected with the second lead screw.
- 根据权利要求15所述投影装置,其中,所述驱动组件包括多个所述第二 滑块,所述升降机构包括多个所述升降架,所述多个第二滑块与所述多个升降架中的动力杆连接;The projection device according to claim 15, wherein, the driving assembly comprises a plurality of the second sliders, the lifting mechanism comprises a plurality of lifting frames, the plurality of second sliders and the plurality of power rod connection in the lifting frame;所述第二丝杠包括多个螺纹,且多个螺纹中的相邻两个螺纹的旋向相反,所述多个螺纹与所述多个第二滑块一一对应。The second lead screw includes a plurality of threads, and two adjacent threads in the plurality of threads have opposite directions of rotation, and the plurality of threads correspond to the plurality of second sliders one by one.
- 根据权利要求15所述的投影装置,其中,所述传送带组件包括:The projection apparatus of claim 15, wherein the conveyor belt assembly comprises:变速箱体;gearbox body;第一带轮,所述第一带轮与所述变速箱体可旋转连接,且与所述第二驱动电机的所述输出轴连接;a first pulley, the first pulley is rotatably connected to the gearbox body, and connected to the output shaft of the second drive motor;第二带轮,所述第二带轮与所述变速箱体可旋转连接,所述第二带轮包括第一圆槽和第二圆槽,所述第二圆槽的直径小于所述第一圆槽的直径,且所述第一带轮的直径小于所述第一圆槽的直径;A second pulley, the second pulley is rotatably connected to the gearbox body, the second pulley includes a first circular groove and a second circular groove, the diameter of the second circular groove is smaller than that of the first circular groove a diameter of a circular groove, and the diameter of the first pulley is smaller than the diameter of the first circular groove;第三带轮,所述第三带轮套设在所述第二丝杠上,且与所述第二丝杠固定连接,所述第二圆槽的直径小于所述第三带轮的外径;The third pulley, the third pulley is sleeved on the second lead screw and fixedly connected with the second lead screw, the diameter of the second circular groove is smaller than the outer diameter of the third pulley path;第一传送带,所述第一传送带套设在所述第二带轮的第一圆槽和所述第一带轮上;和a first conveyor belt, the first conveyor belt is sleeved on the first circular groove of the second pulley and the first pulley; and第二传送带,所述第二传送带套设在所述第二带轮的第二圆槽和所述第三带轮上。The second conveyor belt is sleeved on the second circular groove of the second pulley and the third pulley.
- 根据权利要求17所述的投影装置,其中,所述传送带组件还包括限位件,所述限位件与所述变速箱体连接,所述限位件压紧在所述第一传送带或所述第二传送带的背离对应带轮一侧的表面。The projection device according to claim 17, wherein the conveyor belt assembly further comprises a limiter, the limiter is connected to the gearbox body, and the limiter is pressed against the first conveyor belt or the The surface of the second conveyor belt away from the side of the corresponding pulley.
- 根据权利要求1所述的投影装置,其中,所述升降机构包括横梁,所述横梁与所述幕布的所述第一侧边连接;The projection device according to claim 1, wherein the lifting mechanism comprises a beam connected to the first side of the screen;所述投影屏幕还包括拉紧机构,所述拉紧机构的第一端与所述横梁连接,且所述拉紧机构的第二端与所述卷曲机构连接,位于所述第一端和所述第二端之间的所述拉紧机构的至少一部分与所述幕布连接。The projection screen also includes a tensioning mechanism, the first end of the tensioning mechanism is connected to the crossbeam, and the second end of the tensioning mechanism is connected to the curling mechanism, located between the first end and the At least a portion of the tensioning mechanism between the second ends is connected to the screen.
- 根据权利要求19所述的投影装置,其中,所述幕布的与所述第一侧边的长度方向垂直的两条侧边,沿所述幕布的一侧表面翻折,并与所述一侧表面固定,以形成容置兜,所述拉紧机构穿设于所述容置兜,以固定所述拉紧机构的所述至少一部分。The projection device according to claim 19, wherein the two sides of the screen perpendicular to the length direction of the first side are folded along one side surface of the screen, and The surface is fixed to form an accommodating pocket, and the tightening mechanism is passed through the accommodating pocket to fix at least a part of the tightening mechanism.
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121316465.XU CN215769337U (en) | 2021-06-11 | 2021-06-11 | Projection screen and laser projection equipment |
CN202121316465.X | 2021-06-11 | ||
CN202121565316.7U CN216485962U (en) | 2021-07-09 | 2021-07-09 | Projection screen |
CN202121565316.7 | 2021-07-09 | ||
CN202122354211.3U CN215729260U (en) | 2021-09-27 | 2021-09-27 | Projection device |
CN202111136349.4A CN115877647A (en) | 2021-09-27 | 2021-09-27 | Projection device |
CN202122354211.3 | 2021-09-27 | ||
CN202111136349.4 | 2021-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022258064A1 true WO2022258064A1 (en) | 2022-12-15 |
Family
ID=84425724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2022/098266 WO2022258064A1 (en) | 2021-06-11 | 2022-06-10 | Projection apparatus |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2022258064A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220291578A1 (en) * | 2020-04-26 | 2022-09-15 | Hisense Laser Display Co., Ltd | Projection screen and projection apparatus |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009009043A (en) * | 2007-06-29 | 2009-01-15 | Teijin Fibers Ltd | Reflection type screen device |
CN205956696U (en) * | 2016-08-30 | 2017-02-15 | 武汉思迈展览有限公司 | But removal drape device of balancing |
CN212675352U (en) * | 2020-04-26 | 2021-03-09 | 青岛海信激光显示股份有限公司 | Projection device |
CN215729260U (en) * | 2021-09-27 | 2022-02-01 | 青岛海信激光显示股份有限公司 | Projection device |
CN215769337U (en) * | 2021-06-11 | 2022-02-08 | 青岛海信激光显示股份有限公司 | Projection screen and laser projection equipment |
CN216485962U (en) * | 2021-07-09 | 2022-05-10 | 青岛海信激光显示股份有限公司 | Projection screen |
-
2022
- 2022-06-10 WO PCT/CN2022/098266 patent/WO2022258064A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009009043A (en) * | 2007-06-29 | 2009-01-15 | Teijin Fibers Ltd | Reflection type screen device |
CN205956696U (en) * | 2016-08-30 | 2017-02-15 | 武汉思迈展览有限公司 | But removal drape device of balancing |
CN212675352U (en) * | 2020-04-26 | 2021-03-09 | 青岛海信激光显示股份有限公司 | Projection device |
CN215769337U (en) * | 2021-06-11 | 2022-02-08 | 青岛海信激光显示股份有限公司 | Projection screen and laser projection equipment |
CN216485962U (en) * | 2021-07-09 | 2022-05-10 | 青岛海信激光显示股份有限公司 | Projection screen |
CN215729260U (en) * | 2021-09-27 | 2022-02-01 | 青岛海信激光显示股份有限公司 | Projection device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220291578A1 (en) * | 2020-04-26 | 2022-09-15 | Hisense Laser Display Co., Ltd | Projection screen and projection apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6755540B1 (en) | Lens shifting apparatus | |
US7706066B2 (en) | Portable front projection screen assemblies with flexible screens | |
WO2022258064A1 (en) | Projection apparatus | |
US8827463B2 (en) | Projector and anamorphic prism optical unit | |
CN1726704A (en) | Compact integrated front projection system | |
US4113367A (en) | Roof reflective polygon scanning apparatus | |
US20090046257A1 (en) | Projection device | |
CN113641070B (en) | Projection device | |
US20220291578A1 (en) | Projection screen and projection apparatus | |
CN215729260U (en) | Projection device | |
CN1051619C (en) | Driving device of motion-picture projection lens with synchronous toothed belt | |
WO2021218809A1 (en) | Projection apparatus | |
CN113641073B (en) | Projection apparatus | |
CN215769337U (en) | Projection screen and laser projection equipment | |
CN113885290A (en) | Projection device | |
CN113805420A (en) | Projection device | |
WO2022017367A1 (en) | Laser projection device | |
US7654678B1 (en) | Cinewide with autoscope | |
WO2021110158A1 (en) | Laser projection device | |
CN115877647A (en) | Projection device | |
CN220290045U (en) | Real-time interaction device based on 3D holographic imaging technology | |
CN218972276U (en) | Displacement platform of optical system and display device | |
KR102507176B1 (en) | Sliding type variable screen | |
JPH0515035U (en) | LCD projector device | |
JP3090282B2 (en) | Projector optical system adjustment mechanism |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22819660 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22819660 Country of ref document: EP Kind code of ref document: A1 |