Automatic focusing projector based on laser

Abstract

The utility model relates to an automatic focusing projector based on laser in the technical field of projectors. The projector body comprises a shell, a plurality of first supporting legs used for supporting the shell are installed at the bottom end of the shell, a plurality of adjusting devices are installed in the shell, each adjusting device comprises a second supporting leg facilitating supporting of the shell, and a limiting pipe used for limiting the second supporting leg is installed outside the second supporting leg. An adjusting assembly used for controlling the second supporting leg to move up and down is installed at the upper end of the limiting pipe, and a plurality of power assemblies used for controlling the adjusting assembly to rotate are installed in the shell. When a projected picture is inclined, a rotary knob is rotated, so that a rotating shaft drives a worm to rotate, the worm drives a worm gear to rotate, and an internal thread is matched with a second external thread to control a second supporting leg to extend out of a middle hole of a first supporting leg so as to lift one end of the shell, so that the lower end of the projected picture is lifted so as to correct the projected picture.

Description

Technical Field

[0001] The utility model relates to the technical field of projectors, in particular to a laser-based automatic focus projector. Background Art

[0002] Laser projectors use laser beams to project images. After the laser beams are expanded by the corresponding optical components and processing chips in the machine, they are transmitted to the X-prism to integrate the three laser beams. The projection objective lens then transmits the integrated laser beams to the projection screen, completing the entire laser projector display process. Autofocus projectors include two types: hanging and display types. The display type projector has support legs at the bottom.

[0003] For example, a laser-based autofocus projector disclosed in Chinese patent application number CN202323044978.1 has the following specific contents: it includes a ranging base, a laser transmitter is provided on the ranging base, and a signal receiving instrument is provided on the side of the laser transmitter. By receiving the laser signal from the laser transmitter, the distance from the projection board is measured. The ranging base is connected to the imaging circuit board through the laser ranging wiring; the rear end of the projector housing is provided with a device wiring port, and the device wiring port is connected to the imaging circuit board through the device connection line. Provide a data source for projector imaging. A power interface is provided at the rear end of the projector housing, and the power interface is connected to the imaging circuit board through the power wiring. Provide power for the projector operation. A supporting bottom column is fixedly connected to the bottom end of the projector housing to support the entire projector housing, but it still has the following technical problems:

[0004] If the installation surface is uneven or the projection surface is tilted, the projected image will appear tilted with one side higher than the other during actual projection. The support base fixedly installed at the bottom of the projector housing is only used to support the projector, so it is difficult to adjust the angle of the projected image. Utility Model Content

[0005] In order to solve the problem of difficulty in adjusting the angle of the projection image raised in the above background technology, the present invention provides the following technical solutions:

[0006] A laser-based autofocus projector includes a projector body;

[0007] The projector body comprises a shell, and a plurality of first supporting legs for supporting the shell are installed at the bottom end of the shell.

[0008] A plurality of adjustment devices are installed inside the shell, and the adjustment devices include a second support leg for supporting the shell, a limiting tube for limiting the second support leg is installed on the outside of the second support leg, and an adjustment component for controlling the up and down movement of the second support leg is installed on the upper end of the limiting tube.

[0009] A plurality of power components for controlling the rotation of the adjustment components are installed inside the shell.

[0010] Furthermore, a lens is installed at one end of the shell, a heat dissipation hole is processed on one side of the shell, and a blocking component for opening and closing the heat dissipation hole is installed inside the shell.

[0011] Furthermore, the blocking assembly includes a blocking plate for opening and closing the heat dissipation hole, and a connecting rod for pulling the blocking plate is installed in the middle of the blocking plate.

[0012] Furthermore, a first external thread is processed on the upper end of the connecting rod, a fixed block is installed in the middle of the connecting rod, a nut is installed on the upper end of the connecting rod for cooperating with the first external thread to control the upward movement of the sealing plate, and the nut is outside the shell, and the upper end of the connecting rod is sleeved with a spring for pushing the sealing plate to reset.

[0013] Furthermore, a second external thread is processed on the upper end of the second supporting leg, and a sliding block is installed in the middle of the second supporting leg.

[0014] Furthermore, the limiting tube includes a tube body, a telescopic hole is processed in the middle of the tube body for the second supporting leg to be telescoped, the inner wall of the telescopic hole is processed with a sliding groove for the slider to slide up and down, and a plurality of card slots are opened on the top of the tube body, and a threaded hole is processed on one side of the groove cavity of the card slot.

[0015] Furthermore, the adjustment assembly includes a worm gear, the middle part of which is processed with an internal thread for cooperating with a second external thread to control the second support leg to move up and down, a first connecting tube is installed at the lower end of the worm gear, a second connecting tube is installed inside the first connecting tube, a plurality of plug-ins are installed at the bottom of the second connecting tube, and the plug-ins are inserted into the groove cavity of the card slot, and a bolt is installed in the middle part of the plug-in block for cooperating with the threaded hole to limit the second connecting tube.

[0016] Furthermore, the power assembly includes a worm for controlling the rotation of the worm wheel, a rotating shaft is installed in the middle of the worm, a knob is installed at one end of the rotating shaft, and the knob is located outside the housing.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] When the projected image is tilted, the knob is turned to cause the rotating shaft to rotate the worm, and the worm drives the worm wheel to rotate. The internal thread cooperates with the second external thread to control the second support leg to extend out of the middle hole of the first support leg to raise one end of the shell, thereby raising the lower end of the projected image to correct the projected image. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the projector body of the utility model;

[0021] Figure 3 This is a schematic structural diagram of the plugging assembly of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the regulating device of the present utility model;

[0023] Figure 5 This is a structural diagram of the limit tube of the utility model;

[0024] Figure 6 This is a schematic structural diagram of the adjustment component of the utility model;

[0025] Figure 7 This is a schematic structural diagram of the power assembly of the utility model.

[0026] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0027] 001-projector body;

[0028] 100 - housing, 110 - lens, 120 - first support leg, 130 - heat dissipation hole, 200 - blocking assembly, 210 - blocking plate, 220 - connecting rod, 221 - fixing block, 222 - first external thread, 230 - nut, 240 - spring;

[0029] 002-regulating device;

[0030] 300-second supporting leg, 310-second external thread, 320-slider;

[0031] 400-limiting tube, 410-tube body, 411-telescopic hole, 412-slide groove, 413-slot, 414-threaded hole;

[0032] 500 - adjustment assembly, 510 - worm gear, 511 - internal thread, 512 - first connecting pipe, 520 - second connecting pipe, 521 - insert, 522 - bolt;

[0033] 003-Power assembly;

[0034] 600-worm gear, 610-rotating shaft, 611-knob. DETAILED DESCRIPTION

[0035] The following describes in detail the preferred specific implementations of the present invention, and provides a clear and complete description in conjunction with the accompanying drawings.

[0036] See also Figure 1-Figure 7 The utility model provides a laser-based auto-focus projector, including a projector body 001.

[0037] The projector body 001 includes a shell 100, a plurality of first supporting legs 120 for supporting the shell 100 are fixedly mounted on the bottom end of the shell 100, and a lens 110 is mounted on one end of the shell 100.

[0038] One side of the shell 100 is processed with multiple heat dissipation holes 130, which are used for heat dissipation. A sealing component 200 for opening and closing the heat dissipation holes 130 is installed inside the shell 100. When the projector body 001 is not in use, the heat dissipation holes 130 are closed by the sealing component 200 to prevent dust and mosquitoes from entering the outside of the shell 100.

[0039] The sealing assembly 200 includes a sealing plate 210 for opening and closing the heat dissipation hole 130. A connecting rod 220 for pulling the sealing plate 210 is fixedly mounted in the middle of the sealing plate 210. The upper end of the connecting rod 220 is machined with a first external thread 222, and a fixing block 221 is fixedly mounted in the middle of the connecting rod 220. A nut 230 is mounted on the upper end of the connecting rod 220 for cooperating with the first external thread 222 to control the upward movement of the sealing plate 210. The nut 230 is located outside the housing 100. A spring 240 is sleeved on the upper end of the connecting rod 220 for pushing the sealing plate 210 back into position.

[0040] After the use of the projector body 001 is finished, the nut 230 is rotated. Under the action of the first external thread 222, the connecting rod 220 drives the sealing plate 210 to move upward, so that the sealing plate 210 closes the heat dissipation hole 130. When the nut 230 is rotated in the opposite direction, the spring 240 pushes the fixed block 221 downward, so that the connecting rod 220 drives the sealing plate 210 to move downward, and the sealing plate 210 opens the heat dissipation hole 130 to facilitate heat dissipation.

[0041] The housing 100 is internally mounted with multiple adjustment devices 002. These include a second support leg 300 for supporting the housing 100. A hole is machined into the center of the first support leg 120 for allowing the second support leg 300 to extend and retract. The first support leg 120 supports the housing 100. To adjust the image projected by the lens 110, the second support leg 300 is extended from the bottom of the first support leg 120, thereby raising the side of the housing 100 to adjust the image.

[0042] A second external thread 310 is processed on the upper end of the second supporting leg 300 , and a slider 320 is fixedly installed in the middle of the second supporting leg 300 .

[0043] A limiting tube 400 is installed on the outside of the second support leg 300 for limiting the position of the second support leg 300. The limiting tube 400 is fixedly installed at the bottom of the inner cavity of the shell 100. The limiting tube 400 includes a tube body 410. A telescopic hole 411 is machined in the middle of the tube body 410 for the second support leg 300 to extend and retract. The second support leg 300 moves up and down within the cavity of the telescopic hole 411. The inner wall of the telescopic hole 411 is machined with a slide groove 412 for the slider 320 to slide up and down. The slide groove 412 limits the slider 320 so that the second support leg 300 can only move up and down and cannot rotate. A plurality of slots 413 are opened at the top of the tube body 410, and a threaded hole 414 is machined on one side of the slot cavity of the slot 413.

[0044] An adjustment component 500 is installed at the upper end of the limiting tube 400 for controlling the second support leg 300 to move up and down. The adjustment component 500 includes a worm gear 510. The middle part of the worm gear 510 is processed with an internal thread 511 for cooperating with the second external thread 310 to control the second support leg 300 to move up and down. When the worm gear 510 rotates, the internal thread 511 cooperates with the second external thread 310 to drive the second support leg 300 to move up and down in the cavity of the telescopic hole 411.

[0045] A first connecting tube 512 is fixedly welded to the lower end of the worm gear 510. A second connecting tube 520 is installed inside the first connecting tube 512. Before the first connecting tube 512 is welded to the lower end of the worm gear 510, the second connecting tube 520 is placed into the middle of the first connecting tube 512, and then the first connecting tube 512 is welded to the bottom of the worm gear 510. A plurality of inserts 521 are fixedly installed at the bottom of the second connecting tube 520. The inserts 521 are inserted into the grooves of the retaining slots 413. Bolts 522 are installed in the middle of the inserts 521 to cooperate with the threaded holes 414 to limit the position of the second connecting tube 520. After the bolts 522 are screwed into the grooves of the threaded holes 414, the second connecting tube 520 is fixed, preventing it from rotating while the first connecting tube 512 can rotate.

[0046] A plurality of power components 003 for controlling the rotation of the adjustment component 500 are installed inside the shell 100. The power component 003 includes a worm 600 for controlling the rotation of the worm wheel 510. A rotating shaft 610 is fixedly installed in the middle of the worm 600. A knob 611 is fixedly installed at one end of the rotating shaft 610. The knob 611 is located outside the shell 100 and on the side of the shell 100 to facilitate the rotation of the worm 600.

[0047] When the projected image is tilted, the knob 611 is rotated to cause the rotating shaft 610 to drive the worm 600 to rotate, and the worm 600 drives the worm wheel 510 to rotate. The internal thread 511 cooperates with the second external thread 310 to control the second support leg 300 to extend out of the middle hole of the first support leg 120 to raise one end of the shell 100, thereby raising the lower end of the projected image to correct the projected image.

[0048] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the present invention. In addition, any non-creative modifications made to the present invention by those skilled in the art without making any creative work still fall within the scope of protection of the present invention.

Claims

1. A laser-based autofocus projector, comprising a projector body (001), characterized in that: The projector body (001) comprises a shell (100), and a plurality of first supporting legs (120) for supporting the shell (100) are installed at the bottom end of the shell (100); A plurality of adjustment devices (002) are installed inside the housing (100), the adjustment devices (002) comprising a second support leg (300) for supporting the housing (100), a position limiting tube (400) for limiting the position of the second support leg (300) being installed on the outside of the second support leg (300), and an adjustment assembly (500) for controlling the second support leg (300) to move up and down being installed on the upper end of the position limiting tube (400); A plurality of power components (003) for controlling the rotation of the adjustment component (500) are installed inside the housing (100).

2. The laser-based autofocus projector according to claim 1, wherein: A lens (110) is installed at one end of the housing (100), a heat dissipation hole (130) is processed on one side of the housing (100), and a blocking component (200) for opening and closing the heat dissipation hole (130) is installed inside the housing (100).

3. The laser-based autofocus projector according to claim 2, wherein: The blocking assembly (200) comprises a blocking plate (210) for opening and closing the heat dissipation hole (130), and a connecting rod (220) for pulling the blocking plate (210) is installed in the middle of the blocking plate (210).

4. The laser-based autofocus projector according to claim 3, wherein: The upper end of the connecting rod (220) is processed with a first external thread (222), and a fixing block (221) is installed in the middle of the connecting rod (220). The upper end of the connecting rod (220) is installed with a nut (230) for cooperating with the first external thread (222) to control the upward movement of the blocking plate (210), and the nut (230) is located outside the shell (100). The upper end of the connecting rod (220) is sleeved with a spring (240) for pushing the blocking plate (210) to return.

5. The laser-based autofocus projector according to claim 1, wherein: A second external thread (310) is processed on the upper end of the second supporting leg (300), and a sliding block (320) is installed in the middle of the second supporting leg (300).

6. The laser-based autofocus projector according to claim 5, characterized in that: The limiting tube (400) comprises a tube body (410), a telescopic hole (411) for allowing the second supporting leg (300) to be telescoped is machined in the middle of the tube body (410), a sliding groove (412) for allowing the slider (320) to slide up and down is machined on the inner wall of the telescopic hole (411), and a plurality of slots (413) are opened on the top of the tube body (410), and a threaded hole (414) is machined on one side of the slot cavity of the slot (413).

7. The laser-based autofocus projector according to claim 6, wherein: The adjustment assembly (500) includes a worm gear (510), wherein an internal thread (511) is processed in the middle of the worm gear (510) for cooperating with a second external thread (310) to control the second support leg (300) to move up and down, a first connecting tube (512) is installed at the lower end of the worm gear (510), a second connecting tube (520) is installed inside the first connecting tube (512), a plurality of plug blocks (521) are installed at the bottom of the second connecting tube (520), and the plug blocks (521) are inserted into the groove cavity of the card slot (413), and a bolt (522) is installed in the middle of the plug block (521) for cooperating with the threaded hole (414) to limit the second connecting tube (520).

8. The laser-based autofocus projector according to claim 7, wherein: The power assembly (003) includes a worm (600) for controlling the rotation of the worm wheel (510), a rotating shaft (610) is installed in the middle of the worm (600), and a knob (611) is installed at one end of the rotating shaft (610), and the knob (611) is located outside the housing (100).

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