CN112483846B

CN112483846B - Portable support frame for digital projector

Info

Publication number: CN112483846B
Application number: CN202011301177.7A
Authority: CN
Inventors: 陈苒凌; 王婧宇; 程凯阳
Original assignee: Beijing Yunduan Culture And Media Co ltd
Current assignee: Beijing Yunduan Culture And Media Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2022-06-24
Anticipated expiration: 2040-11-19
Also published as: CN112483846A

Abstract

The application relates to a portable support frame for a digital projector, which comprises a support block and a support device, wherein the support block is provided with a clamping device; the upper end surface of the supporting block is provided with a chute; the bottom of the sliding groove is provided with a holding groove; the upper end surface of the supporting block is provided with a movable groove; a plurality of movable grooves are arranged at intervals along the circumferential direction of the sliding groove; the clamping device comprises a driving block arranged in the sliding groove in a sliding manner, a clamping part arranged in the movable groove in a rotating manner and a fixing component arranged on the supporting block; one side of the driving block is provided with a limit groove; the clamping part comprises a pin shaft fixed in the movable groove, a first rod rotatably arranged on the pin shaft and a second rod vertically fixing one side of the first rod away from the driving block; the end part of the first rod, which is far away from the second rod, is movably arranged in the limiting groove; the upper end of the second rod is attached to the outer side wall of the projector; a return spring is arranged in the accommodating groove; the two ends of the reset spring are respectively fixed with the lower end surface of the driving block and the groove bottom of the accommodating groove. The projector has the effect of improving the installation stability of the projector.

Description

Portable support frame for digital projector

Technical Field

The application relates to the field of projector supports, in particular to a portable support for a digital projector.

Background

A digital projector mount is a mechanical device used to support a digital projector so that the digital projector can reproduce the effects and sounds recorded on a film in cooperation with a screen and a speaker.

The prior Chinese utility model with the publication number of CN201716513U discloses a miniature film projector, which comprises a projection host, an upper film box, a lower film box and a bracket, wherein the projection host is rectangular, the size of the projection host is 50-200 mm, the width of the projection host is 20-100 mm, and the height of the projection host is 30-100 mm, the upper film box is arranged above the projection host through an upper socket, the lower film box is arranged below the right side of the projection host through a lower socket, the upper film box and the lower film box are both circular, the diameter of the upper film box is 30-150 mm, and the thickness of the lower film box is 5-50 mm; the right side of the projection host is provided with a projection window, the bottom of the projection host is provided with a fixing screw hole, and the projection host is connected with a support through the fixing screw hole.

In view of the above-described related art, the inventors considered that the projector is fixed to the bracket only by bolts at the bottom of the projector, and the projector is not stably mounted.

Disclosure of Invention

In order to improve the installation stability of projector, this application provides a portable support frame for digital projector.

The application provides a portable support frame for digital projector adopts following technical scheme:

a portable support frame for a digital projector comprises a support block and a support device arranged below the support block, wherein a clamping device is arranged on the support block; the upper end face of the supporting block is provided with a sliding chute; the bottom of the sliding groove is provided with an accommodating groove; a movable groove communicated with the sliding groove is formed in the upper end face of the supporting block and located on one side of the sliding groove; a plurality of movable grooves are arranged at intervals along the circumferential direction of the sliding groove; the clamping device comprises a driving block arranged in the sliding groove in a sliding manner, a clamping part arranged in the movable groove in a rotating manner and a fixing component arranged on the supporting block and used for fixing the driving block; a limiting groove is formed in one side, close to the clamping part, of the driving block; the clamping part comprises a pin shaft fixed in the movable groove, a first rod rotatably arranged on the pin shaft and a second rod vertically fixing one side of the first rod away from the driving block; the end part of the first rod, which is far away from the second rod, is movably arranged in the limiting groove; the upper end of the second rod is attached to the outer side wall of the projector; a return spring is arranged in the accommodating groove; and two ends of the reset spring are respectively fixed with the lower end surface of the driving block and the groove bottom of the accommodating groove.

Through adopting above-mentioned technical scheme, when needs install the projector on the support frame, the up end of driving block is higher than the up end of supporting shoe, place the projector in the up end of driving block and press through placing the projector, make the driving block slide down along the spout and fix through fixed subassembly, in the in-process that the driving block descends, the last cell wall of spacing groove extrudees the tip of first pole, thereby make first pole rotate along the axis of round pin axle, the one end lapse that first pole is close to the driving block, the one end lapse that the driving block was kept away from to first pole drives the second pole and draws close to the center of supporting shoe, thereby can compress tightly the projector of placing on the driving block, accomplish the installation to the projector, simple and reliable to the fixed mode of projector, easy to operate.

Preferably, strip-shaped grooves are formed in two sides of the supporting block; a positioning groove is formed at the bottom of the strip-shaped groove; the length direction of the strip-shaped groove is consistent with that of the positioning groove; clamping grooves are formed in the positions, close to the lower end face of the driving block, of the two sides of the driving block; the fixing assembly comprises an inserted rod arranged in the strip-shaped groove in a sliding manner, a positioning block arranged in the positioning groove in a sliding manner and a connecting spring for connecting the positioning block and the groove wall of the positioning groove; the end part of the inserted bar is in inserting fit with the clamping groove; and the supporting block is provided with a driving component for separating the inserted bar from the clamping groove.

Through adopting above-mentioned technical scheme, press the back downwards with the drive block, when the tank bottom butt of the lower terminal surface of drive block and spout, the draw-in groove aligns with the inserted bar, under coupling spring's effect for the inserted bar is pegged graft in the draw-in groove, fixes the drive block, makes the clamping part of drive block week side press from both sides the projector tightly. When the projector needs to be disassembled, the insertion rod is pulled to one side far away from the clamping groove only through the driving assembly, so that the end part of the insertion rod is separated from the clamping groove. Under the effect of return spring, make the drive block to the direction of keeping away from the spout bottom remove to drive clamping part and rotate, make the second pole remove to the direction of keeping away from the supporting shoe center, loosen the clamp to the projector, make the projector can dismantle.

Preferably, one end of the inserted link far away from the driving block extends to the outside of the supporting block; the driving component comprises a connecting rod fixed at one end of the inserted link far away from the driving block, a driving ring sleeved on the outer side wall of the supporting block in a sliding manner, and a mounting rod with one end hinged with the end part of the connecting rod and the other end hinged with the driving ring; the mounting rod is obliquely arranged from bottom to top in the direction close to the supporting block.

Through adopting above-mentioned technical scheme, when needs loosen the fixed to the actuating block, through pressing the drive ring, make the drive ring along the lateral wall downstream of supporting shoe, the drive ring drives the connecting rod downstream, because the other end of connecting rod is articulated with the installation pole, make the direction that the draw-in groove was removed to the installation pole pulling inserted bar, under reset spring's effect, make the actuating block rebound, loosen the pressing to the drive ring, under connecting spring's effect, make the tip of inserted bar and the lateral wall of actuating block support tightly.

Preferably, the supporting device comprises a supporting leg, one end of the supporting leg is hinged to the lower end face of the supporting block; a plurality of supporting legs are uniformly arranged along the edge of the supporting block; and the supporting block is provided with an adjusting component for simultaneously expanding or retracting the supporting legs.

Through adopting above-mentioned technical scheme, open a plurality of landing legs, can make the landing leg open and support the supporting shoe. And the plurality of uniformly arranged supporting legs further improve the stability of the support. Can open or pack up a plurality of landing legs simultaneously through adjusting part, be favorable to improving the convenience when using the support frame.

Preferably, the adjusting assembly comprises a screw rod rotatably arranged at the bottom of the supporting block and a fixed cylinder sleeved outside the screw rod and in threaded connection with the screw rod; a telescopic rod is connected between the outer side wall of the fixed cylinder and the supporting leg; one end of the telescopic rod is hinged with the outer side wall of the fixed cylinder, and the other end of the telescopic rod is hinged with the side wall of the supporting rod in the supporting leg.

Through adopting above-mentioned technical scheme, rotate the lead screw, because the lateral wall of solid fixed cylinder passes through the telescopic link and is connected with the landing leg, lead screw and solid fixed cylinder threaded connection for solid fixed cylinder moves to the direction of keeping away from the supporting shoe gradually, and the in-process that solid fixed cylinder moved down drives the telescopic link and opens, thereby struts the landing leg, and solid fixed cylinder can with ground butt, the landing leg supports the supporting shoe aslope, thereby further improve and support ground stability to the supporting shoe. The lead screw is rotated reversely, so that the lead screw drives the fixed cylinder to ascend, the fixed cylinder pulls one end of the telescopic rod to move upwards, and the telescopic rod drives the supporting legs to be folded.

Preferably, the bottom of the supporting block is provided with a cavity; a worm is rotationally arranged in the cavity; one end of the worm penetrates through the side wall of the supporting block and is fixed with a handle; and a worm wheel meshed with the worm is fixed at the upper end of the screw rod.

Through adopting above-mentioned technical scheme, rotate the handle, drive the worm through the handle and rotate, rotate with worm engaged with worm wheel to can make the worm wheel drive the lead screw and rotate, it is more convenient to open and pack up of landing leg.

Preferably, the supporting leg comprises a sliding sleeve hinged with the lower end face of the supporting block and a supporting rod inserted in the sliding sleeve and in sliding fit with the sliding sleeve; one side of the supporting rod is fixed with a rack; the rack is arranged along the length direction of the support rod; a first adjusting groove is formed in the outer side wall of the sliding sleeve along the length direction of the sliding sleeve; a second adjusting groove is formed at the bottom of the first adjusting groove; the length direction of the second adjusting groove is perpendicular to the length direction of the sliding sleeve; an adjusting block is arranged in the second adjusting groove in a sliding manner; one side of the adjusting block is provided with a positioning head which is in plug-in fit with the tooth groove of the rack; a buffer spring is fixed between the other side of the adjusting block and the wall of the second adjusting groove; a toggle groove is formed in the adjusting block; the toggle groove inclines towards the direction close to the middle part of the supporting block from bottom to top; a shifting rod is arranged in the shifting groove in a sliding manner; a shifting block is fixed on the upper end face of the shifting rod; a fixed rod is fixed on one side of the shifting block, which is far away from the shifting rod; the fixed rod is arranged in the first adjusting groove in a sliding mode, and one end of the fixed rod extends out of the first adjusting groove.

Through adopting above-mentioned technical scheme, when the holistic height of support frame is adjusted to needs, through pressing down the dead lever, make the dead lever drive shifting block downstream, because the restriction in striking groove, make the shifting lever drive the regulating block and remove to the direction of keeping away from the rack, thereby drive the joint that the locating head breaks away from with the rack, loosen the fixed of sliding sleeve and branch, make the sliding sleeve can remove along the length direction of branch, after confirming the total length of landing leg, loosen the pressing to the dead lever, under buffer spring's effect, make the regulating block remove to the direction that is close to the rack along the second regulating groove, the locating head is pegged graft in the tooth's socket, accomplish the relatively fixed of sliding sleeve and branch.

Preferably, the lower end of the supporting leg is provided with a supporting seat; the upper end surface of the supporting seat is provided with a spherical groove; the lower end of the supporting leg is fixed with a universal ball; the universal ball is in plug-in fit with the spherical groove.

Through adopting above-mentioned technical scheme, set up universal ball at the lower extreme of landing leg, can with the supporting seat cooperation of pegging graft, during the landing leg slope supported, the supporting seat can stable support subaerial, improves the area of support frame and ground contact, has further improved the support stability of support frame.

Preferably, a threaded rod which is horizontally arranged is inserted in the position, close to the upper end, of the second rod; the threaded rod is in sliding fit with the second rod; one end of the threaded rod close to the center of the supporting block is fixedly provided with a pressing block which is tightly pressed against the side wall of the projector; the threaded rod is in threaded connection with fixing nuts on two sides of the second rod; one opposite side of the two fixing nuts is tightly propped against the side wall of the second rod.

Through adopting above-mentioned technical scheme, set up the threaded rod at the tip of second pole, can adjust the position of briquetting according to the projector shape of difference for the briquetting can support tightly with the lateral wall of projector, improves the clamp of projector and fixes.

Preferably, the upper end surface of the driving block is provided with a magnet.

Through adopting above-mentioned technical scheme, set up magnet at the up end of drive block for the projector can be held by magnet, can further strengthen the joint strength of projector and supporting shoe, makes the projector installation more stable.

In summary, the present application includes at least one of the following beneficial technical effects:

the clamping device can be driven to press the projector placed on the driving block by pressing the driving block, so that the projector is installed, and the fixing mode of the projector is simple and reliable and is easy to operate;

when the projector needs to be disassembled, the insertion rod is pulled to one side far away from the clamping groove only through the driving assembly, so that the end part of the insertion rod is separated from the clamping groove;

the lead screw is rotated, and as the side wall of the fixed cylinder is connected with the supporting legs through the telescopic rod, the lead screw is in threaded connection with the fixed cylinder, so that the fixed cylinder gradually moves towards the direction far away from the supporting block, and the telescopic rod is driven to open in the process that the fixed cylinder moves downwards, thereby opening the supporting legs.

Drawings

Fig. 1 is a schematic structural diagram of the whole of the embodiment of the present application.

Fig. 2 is a schematic structural diagram of a support block according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of an adjusting assembly according to an embodiment of the present application.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Description of reference numerals: 1. a supporting block; 11. a chute; 12. accommodating grooves; 13. a movable groove; 14. a strip-shaped groove; 15. positioning a groove; 2. a clamping device; 21. a drive block; 211. a limiting groove; 212. a card slot; 22. a clamping portion; 221. a pin shaft; 222. a first lever; 223. a second lever; 224. a threaded rod; 225. briquetting; 226. fixing a nut; 23. a fixing assembly; 231. inserting a rod; 232. positioning blocks; 233. a connecting spring; 24. a magnet; 25. a return spring; 3. a support device; 31. a support leg; 311. a sliding sleeve; 3111. a first regulating groove; 3112. a second regulating groove; 312. a strut; 313. a rack; 314. an adjusting block; 3141. a poking groove; 315. a buffer spring; 316. a deflector rod; 317. fixing the rod; 318. positioning the head; 319. shifting blocks; 32. an adjustment assembly; 321. a lead screw; 322. a fixed cylinder; 323. a telescopic rod; 324. a worm gear; 325. a worm; 326. a handle; 33. a supporting seat; 331. a spherical groove; 34. a universal ball; 4. a drive assembly; 41. a connecting rod; 42. a drive ring; 43. and (5) installing a rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a portable support frame for a digital projector. Referring to fig. 1, a portable support frame for a digital projector includes a support block 1, a clamping device 2, and a support device 3. A clamping device 2 is mounted on the support block 1 for clamping the projector. The supporting device 3 is installed on the lower end face of the supporting block 1 and can support the supporting block 1.

Referring to fig. 2, the supporting block 1 is cylindrical, a sliding groove 11 having a rectangular cross section is formed on an upper end surface of the supporting block 1, an accommodating groove 12 is formed at a bottom of the sliding groove 11, and a size of the accommodating groove 12 is smaller than a size of the sliding groove 11. The movable groove 13 that communicates with spout 11 is seted up to the up end of supporting shoe 1 and the one side that is located spout 11, and movable groove 13 is provided with threely along the circumference interval of spout 11, and three movable groove 13 is located the middle part position of the three side of spout 11 respectively.

Referring to fig. 2, the clamping device 2 includes a driving block 21, a clamping portion 22, and a fixing member 23. The section of the driving block 21 is rectangular, and the driving block 21 is slidably disposed in the sliding groove 11. A magnet 24 is fixed to the upper end face of the drive block 21 for attracting the projector and reinforcing the connection between the support block 1 and the projector. The driving block 21 is provided with a limit groove 211 on the side wall corresponding to the three movable grooves 13. A return spring 25 is fixedly connected between the lower end surface of the driving block 21 and the bottom of the accommodating groove 12, and the upper end surface of the driving block 21 is higher than the upper end surface of the supporting block 1 under the condition of not receiving external force.

Referring to fig. 2, the clamping part 22 includes a pin shaft 221, a first lever 222, and a second lever 223. The pin shaft 221 is fixed in the movable groove 13, and the pin shaft 221 is horizontally arranged. The first rod 222 is rotatably connected to the pin shaft 221, one end of the first rod 222 is inserted into the limiting groove 211, and the first rod 222 can slide along the height direction of the limiting groove 211. The second lever 223 vertically fixes a side of the first lever 222 away from the driving block 21. A threaded rod 224 is inserted into the second rod 223 at a position close to the upper end, and the threaded rod 224 is horizontally arranged and is in sliding fit with the second rod 223. A pressing block 225 is fixed to one end of the threaded rod 224 near the center of the support block 1, the pressing block 225 is pressed against the side wall of the projector, and a rubber pad is bonded to the pressing block 225 near the center of the support block 1 in order to reduce the friction between the pressing block 225 and the projector. The threaded rod 224 is screwed with fixing nuts 226 on both sides of the second rod 223, and the opposite sides of the two fixing nuts 226 are respectively abutted against both side walls of the second rod 223. The length of the threaded rod 224 is adjusted by two fixing nuts 226 so that the pressing block 225 can be pressed against the side wall of the projector at all times.

Referring to fig. 2, the fixing member 23 is mounted on the support block 1, and when the projector is placed on the driving block 21, the driving block 21 is moved downward so that the driving block 21 drives the pressing block 225 to press the side wall of the projector, and the driving block 21 is fixed by the fixing member 23 so that the pressing block 225 maintains the press of the projector. Strip-shaped groove 14 has all been seted up to the both sides of supporting shoe 1 and the position that is close to down the terminal surface, and constant head tank 15 has been seted up to the tank bottom in strip-shaped

groove

14, and 14 length direction in strip-shaped groove and the 15 length direction in constant head tank are unanimous, and the equal level setting in strip-shaped groove 14 and constant head tank 15. The two sides of the driving block 21 and the position close to the lower end face thereof are provided with two clamping grooves 212, and the two clamping grooves 212 are arranged in one-to-one correspondence with the two strip-shaped grooves 14. The fixing assembly 23 includes a plunger 231, a positioning block 232, and a coupling spring 233. The inserted bar 231 is slidably disposed in the strip-shaped groove 14, an inclined surface is formed at an end of the inserted bar 231 close to the center of the supporting block 1, the inclined surface is inclined from bottom to top to a position far away from the center of the supporting block 1, and one end of the inserted bar 231 far away from the driving block 21 extends to the outside of the supporting block 1. The end of the insertion rod 231 near the center of the support block 1 is inserted into the slot 212, so as to fix the driving block 21 in the sliding slot 11. The positioning block 232 is slidably connected in the positioning slot 15, and the upper end surface of the positioning block 232 is fixedly connected with the lower end surface of the insertion rod 231. The two ends of the connecting spring 233 are fixedly connected with the groove walls of the positioning block 232 and the positioning groove 15 respectively.

Referring to fig. 2, in order to facilitate the unlocking of the fixing assembly 23 to fix the driving block 21, the driving assembly 4 is mounted on the supporting block 1, so that the insertion rod 231 can be disengaged from the clamping fit with the clamping groove 212. The drive assembly 4 includes a connecting rod 41, a drive ring 42 and a mounting rod 43. The connecting rod 41 is fixed to an end of the inserting rod 231 away from the driving block 21, and the connecting rod 41 is horizontally disposed. The driving ring 42 is sleeved on the outer side wall of the supporting block 1, the driving ring 42 can be arranged in a sliding manner along the height direction of the supporting block 1, and two ends of the mounting rod 43 are respectively hinged with the end part of the connecting rod 41 and the lower end surface of the driving ring 42. The mounting bar 43 is disposed obliquely from bottom to top in a direction close to the support block 1. When the driving ring 42 is pressed, the driving ring 42 applies a pulling force to the insertion rod 231 away from the center of the supporting block 1 through the mounting rod 43, so that the end of the insertion rod 231 can be disengaged from the clamping groove 212.

Referring to fig. 3, the support device 3 includes a leg 31 and an adjustment assembly 32. Four legs 31 are arranged evenly along the edge of the support block 1. The upper ends of the legs 31 are hinged to the lower end surface of the support block 1. The lower end of the supporting leg 31 is rotatably connected with a supporting seat 33. The upper end surface of the supporting seat 33 is provided with a spherical groove 331, and the lower end of the supporting leg 31 is fixed with a universal ball 34 which is inserted and matched with the spherical groove 331.

Referring to fig. 3 and 4, the leg 31 includes a sliding sleeve 311, a strut 312, and a rack 313. The upper end of the sliding sleeve 311 is hinged to the lower end face of the supporting block 1, and the sliding sleeve 311 is sleeved outside the supporting rod 312 and is in sliding fit with the supporting rod 312. The rack 313 is disposed along the length of the strut 312. The outer side wall of the sliding sleeve 311 is provided with a first adjusting groove 3111, and the length direction of the first adjusting groove 3111 is consistent with the length direction of the sliding sleeve 311. A second adjusting groove 3112 is formed at the bottom of the first adjusting groove 3111, and the length direction of the second adjusting groove 3112 is perpendicular to the length direction of the sliding sleeve 311. An adjusting block 314 is slidably connected in the second adjusting groove 3112. A buffer spring 315 is fixed between one side of the adjusting block 314 far away from the rack 313 and the groove wall of the second adjusting groove 3112. One side of the adjusting block 314 close to the first adjusting groove 3111 is provided with a toggle groove 3141 which is obliquely arranged, and the toggle groove 3141 inclines from bottom to top in the direction close to the middle part of the supporting block 1. A shifting lever 316 is slidably connected in the shifting groove 3141, a shifting block 319 is fixed on the upper end surface of the shifting lever 316, a fixing rod 317 is fixed on one side of the shifting block 319 far away from the shifting lever 316, and one end of the fixing rod 317 far away from the shifting block 319 penetrates through the first adjusting groove 3111 and extends out of the first adjusting groove 3111. The fixing rod 317 is slidably disposed in the first adjusting groove 3111. A positioning head 318 is fixed on one side of the adjusting block 314, and one side of the positioning head 318 far away from the adjusting block 314 is in inserted fit with the tooth groove of the rack 313.

Referring to fig. 3, the adjusting assembly 32 includes a lead screw 321, a fixed cylinder 322, and a telescopic rod 323. The screw 321 is rotatably connected to the lower end surface of the support block 1 at a position close to the center. A cavity is formed on the supporting block 1 and close to the lower end. The upper end of the lead screw 321 extends into the cavity and is secured with a worm gear 324. A horizontally arranged worm 325 is rotatably connected in the cavity, one end of the worm 325 passes through the side wall of the supporting block 1 and a handle 326 is fixed. The worm wheel 324 meshes with a worm 325. The fixed cylinder 322 is sleeved outside the screw rod 321 and is in threaded connection with the screw rod 321. One end of the telescopic rod 323 is hinged with the outer side wall of the fixed cylinder 322, the other end of the telescopic rod 323 is hinged with the side wall of the supporting rod 312 in the supporting leg 31, and after the height of the supporting leg 31 is adjusted, the length of the telescopic rod 323 is adjusted, so that the supporting leg 31 can keep a stable opening angle.

The implementation principle of the portable support frame for the digital projector in the embodiment of the application is as follows: when the projector is to be attached to the carriage, the projector is placed on the upper end surface of the driving block 21, so that the projector is attracted to the driving block 21 by the magnet 24, and the driving block 21 is slid downward along the slide groove 11 by pressing the projector. When the slot 212 corresponds to the strip-shaped slot 14, the insertion rod 231 is clamped in the slot 212 under the action of the connecting spring 233. In the process of descending the driving block 21, the upper groove wall of the limiting groove 211 extrudes the end of the first rod 222, so that the first rod 222 rotates along the axis of the pin shaft 221, one end of the first rod 222 close to the driving block 21 moves downwards, one end of the first rod 222 far away from the driving block 21 moves upwards, the second rod 223 is driven to approach the center of the supporting block 1, and the pressing block 225 can be pressed on the side wall of the projector to complete the installation of the projector.

When the projector needs to be detached, the driving ring 42 is pressed, so that the driving ring 42 drives the mounting rod 43 to stretch the insertion rod 231, the insertion rod 231 is separated from the connection with the clamping groove 212, the driving block 21 extends upwards along the sliding groove 11 under the action of the return spring 25, one end of the first rod 222 close to the driving block 21 is driven to move upwards, the second rod 223 moves in the direction away from the center of the supporting block 1, and the pressing block 225 releases the clamping fixation of the projector.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a portable support frame for digital projector, includes supporting shoe (1), sets up in strutting arrangement (3) of supporting shoe (1) below, its characterized in that: a clamping device (2) is arranged on the supporting block (1); the upper end face of the supporting block (1) is provided with a sliding groove (11); the bottom of the sliding chute (11) is provided with an accommodating groove (12); a movable groove (13) communicated with the sliding groove (11) is formed in the upper end face of the supporting block (1) and on one side of the sliding groove (11); a plurality of movable grooves (13) are arranged at intervals along the circumferential direction of the sliding groove (11); the clamping device (2) comprises a driving block (21) arranged in the sliding groove (11) in a sliding manner, a clamping part (22) arranged in the movable groove (13) in a rotating manner and a fixing component (23) arranged on the supporting block (1) and used for fixing the driving block (21); one side of the driving block (21) close to the clamping part (22) is provided with a limit groove (211); the clamping part (22) comprises a pin shaft (221) fixed in the movable groove (13), a first rod (222) rotatably arranged on the pin shaft (221) and a second rod (223) for vertically fixing one side of the first rod (222) far away from the driving block (21); the end part of the first rod (222) far away from the second rod (223) is movably arranged in the limiting groove (211); the upper end of the second rod (223) is attached to the outer side wall of the projector; a return spring (25) is arranged in the accommodating groove (12); and two ends of the return spring (25) are respectively fixed with the lower end surface of the driving block (21) and the groove bottom of the accommodating groove (12).

2. The portable support stand for digital projectors of claim 1, wherein: strip-shaped grooves (14) are formed in two sides of the supporting block (1); a positioning groove (15) is formed at the bottom of the strip-shaped groove (14); the length direction of the strip-shaped groove (14) is consistent with that of the positioning groove (15); clamping grooves (212) are formed in the positions, close to the lower end face of the driving block (21), of the two sides of the driving block (21); the fixing component (23) comprises an inserted rod (231) which is arranged in the strip-shaped groove (14) in a sliding manner, a positioning block (232) which is arranged in the positioning groove (15) in a sliding manner, and a connecting spring (233) which is connected with the positioning block (232) and the groove wall of the positioning groove (15); the end part of the insert rod (231) is in inserted fit with the clamping groove (212); and a driving component (4) for enabling the inserted rod (231) to be separated from the clamping groove (212) is arranged on the supporting block (1).

3. The portable support stand for digital projectors of claim 2, wherein: one end of the inserted rod (231) far away from the driving block (21) extends to the outside of the supporting block (1); the driving component (4) comprises a connecting rod (41) fixed at one end of the inserted rod (231) far away from the driving block (21), a driving ring (42) slidingly sleeved on the outer side wall of the supporting block (1) and a mounting rod (43) with one end hinged with the end of the connecting rod (41) and the other end hinged with the driving ring (42); the mounting rod (43) is obliquely arranged from bottom to top in the direction close to the supporting block (1).

4. The portable support stand for digital projectors of claim 1, wherein: the supporting device (3) comprises a supporting leg (31) with one end hinged to the lower end face of the supporting block (1); a plurality of supporting legs (31) are uniformly arranged along the edge of the supporting block (1); the supporting block (1) is provided with an adjusting component (32) for expanding or retracting the supporting legs (31) simultaneously.

5. The portable support stand for digital projectors of claim 4, wherein: the adjusting assembly (32) comprises a lead screw (321) rotatably arranged at the bottom of the supporting block (1) and a fixed cylinder (322) sleeved outside the lead screw (321) and in threaded connection with the lead screw (321); a telescopic rod (323) is connected between the outer side wall of the fixed cylinder (322) and the supporting leg (31); one end of the telescopic rod (323) is hinged with the outer side wall of the fixed cylinder (322), and the other end of the telescopic rod (323) is hinged with the side wall of the support rod (312) in the support leg (31).

6. The portable support stand for digital projectors of claim 5, wherein: the bottom of the supporting block (1) is provided with a cavity; a worm (325) is rotationally arranged in the cavity; one end of the worm (325) penetrates through the side wall of the supporting block (1) and is fixed with a handle (326); and a worm wheel (324) meshed with the worm (325) is fixed at the upper end of the lead screw (321).

7. The portable support stand for digital projectors of claim 4, wherein: the supporting legs (31) comprise sliding sleeves (311) hinged with the lower end faces of the supporting blocks (1) and supporting rods (312) inserted in the sliding sleeves (311) and in sliding fit with the sliding sleeves (311); a rack (313) is fixed on one side of the support rod (312); the rack (313) is arranged along the length direction of the support rod (312); a first adjusting groove (3111) is formed in the outer side wall of the sliding sleeve (311) along the length direction of the sliding sleeve (311); a second adjusting groove (3112) is formed in the bottom of the first adjusting groove (3111); the length direction of the second adjusting groove (3112) is perpendicular to the length direction of the sliding sleeve (311); an adjusting block (314) is arranged in the second adjusting groove (3112) in a sliding manner; one side of the adjusting block (314) is provided with a positioning head (318) which is in plug-in fit with the tooth groove of the rack (313); a buffer spring (315) is fixed between the other side of the adjusting block (314) and the groove wall of the second adjusting groove (3112); a toggle groove (3141) is formed in the adjusting block (314); the toggle groove (3141) inclines towards the direction close to the middle part of the supporting block (1) from bottom to top; a shifting rod (316) is arranged in the shifting groove (3141) in a sliding manner; a shifting block (319) is fixed on the upper end surface of the shifting rod (316); a fixed rod (317) is fixed on one side of the shifting block (319) far away from the shifting rod (316); the fixing rod (317) is slidably arranged in the first adjusting groove (3111), and one end of the fixing rod (317) extends out of the first adjusting groove (3111).

8. The portable support stand for digital projectors of claim 4, wherein: the lower end of the supporting leg (31) is provided with a supporting seat (33); the upper end surface of the supporting seat (33) is provided with a spherical groove (331); the lower end of the supporting leg (31) is fixed with a universal ball (34); the universal ball (34) is in plug fit with the spherical groove (331).

9. The portable support stand for digital projectors of claim 1, wherein: a threaded rod (224) which is horizontally arranged is inserted in the position, close to the upper end, of the second rod (223); the threaded rod (224) is in sliding fit with the second rod (223); one end of the threaded rod (224) close to the center of the supporting block (1) is fixedly provided with a pressing block (225) which is tightly pressed against the side wall of the projector; fixing nuts (226) are connected to the threaded rod (224) and positioned on two sides of the second rod (223) in a threaded mode; the opposite sides of the two fixing nuts (226) are tightly propped against the side wall of the second rod (223).

10. The portable support stand for digital projectors of claim 1, wherein: the upper end face of the driving block (21) is provided with a magnet (24).