CN112460436A

CN112460436A - Automatic change teaching projection arrangement

Info

Publication number: CN112460436A
Application number: CN202011343926.2A
Authority: CN
Inventors: 陶吉亮
Original assignee: Individual
Current assignee: Qingdao Pennon Education Technology Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-03-09
Anticipated expiration: 2040-11-26
Also published as: CN112460436B

Abstract

The invention discloses an automatic teaching projection device, and particularly relates to the technical field of projection equipment. According to the projection device, the threaded rod, the threaded caps, the connecting plates, the clamping teeth, the gears, the sleeve rod, the pressing plate, the bottom plate, the base and the projection equipment are arranged, the two threaded caps are far away from each other in the rotation process of the threaded rod, so that the two connecting plates respectively drive the two clamping teeth to be clamped into the two gears, the sleeve can be effectively limited, the projection device can be effectively folded and stored, teaching staff can conveniently carry the projection device and use the projection device in different places, and the applicability of the projection device is improved.

Description

Automatic change teaching projection arrangement

Technical Field

The invention relates to the technical field of projection equipment, in particular to an automatic teaching projection device.

Background

In the modern teaching field, multimedia teaching refers to that in the teaching process, according to the characteristics of a teaching target and a teaching object, modern teaching media are reasonably selected and applied through teaching design, and are organically combined with traditional teaching means to jointly participate in the whole teaching process, and various media information acts on students to form a reasonable teaching process structure so as to achieve an optimized teaching effect.

Most need use projection arrangement in the automatic teaching field, through the large screen projection so that the student is clearer audio-visual watching, present projection equipment supports it mostly through the support frame, fix it on the support frame through fastening screw mostly for keeping projection equipment's stability, it is very comparatively inconvenient to its dismouting, although present projection arrangement can carry out certain position adjustment, its bearing structure of projection arrangement fixed structure as an organic whole, can't effectively fold and accomodate whole projection arrangement, make the staff of professorship be not convenient for carry projection arrangement and use in different places, make projection arrangement's suitability not good, consequently, need a portable automatic teaching projection arrangement.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides an automatic teaching projection device, and the technical problems to be solved by the invention are as follows: although certain position adjustment can be carried out to current projection arrangement, its bearing structure of projection arrangement is fixed structure as an organic whole, can't effectively fold whole projection arrangement and accomodate, makes the problem that the professor personnel are not convenient for carry projection arrangement and use in different places.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automatic change teaching projection arrangement, includes the bottom plate, the upper surface overlap joint of bottom plate has the base, the upper surface of base and projection equipment's lower fixed surface are connected, the left and right sides face of base inner wall all has the threaded rod through rotatory subassembly swing joint, the equal threaded connection in the left and right sides of threaded rod surface has the screw cap, the lower surface of screw cap is connected with the upper fixed surface of connecting plate, the left surface of connecting plate and the right flank fixed connection of latch, two latches all are located the connecting cover, the upper surface of connecting cover and the lower fixed surface of bottom plate are connected, latch and two gear meshes mutually, and two gear joints are at the surface of same connecting axle.

The two ends of the connecting shaft are clamped on the opposite surfaces of the two baffles through shaft sleeves, the upper surfaces of the four baffles are fixedly connected with the lower surface of the bottom plate, the opposite surfaces corresponding to the two baffles are fixedly connected with torsion springs, the ends, close to each other, corresponding to the two torsion springs are fixedly connected with the outer wall of the connecting shaft, the outer wall of the connecting shaft is clamped with two sleeves, the two sleeves are respectively positioned between the two corresponding gears, sleeve rods are sleeved in the sleeves, the bottom ends of the sleeve rods are movably connected with the upper surfaces of the pressing plates through pin shafts, pulleys are arranged below the left side surfaces of the sleeves, rope discs are fixedly connected with the left and right sides of the lower surface of the bottom plate, the connecting shaft penetrates through holes formed in the front surfaces of the rope discs, stay ropes are wound on the outer surfaces of the pulleys, penetrate through the stop blocks and, the utility model discloses a telescopic pull rope, including loop bar, clamping bar, telescopic left surface and dog, the fixed slot has all been seted up to the top and the below of loop bar left surface, the clamping bar passes the sleeve and the joint is being located the top fixed slot, telescopic left surface and the right flank fixed connection of dog, the surface of cable has cup jointed the second elastic component, the both ends of second elastic component respectively with the left surface of dog inner wall and the left end fixed connection of clamping bar, the top of loop bar is through the last fixed surface of first elastic component with the sleeve inner wall and is connected.

As a further scheme of the invention: two grooves are formed in the upper surface of the bottom plate, clamping plates are connected in the grooves in a sliding mode and are clamped in the clamping grooves, the two clamping grooves are formed in the lower surface of the base, and the right side face of each clamping plate is fixedly connected with the right side face of the inner wall of each groove through a telescopic assembly.

As a further scheme of the invention: the back fixedly connected with handle of cardboard, the handle setting is placing downtheholely, and two are placed the hole and are all seted up at the back of bottom plate, and the one side that two handles are close to each other all is provided with the pull ring.

As a further scheme of the invention: the lower surface of base and the last fixed surface of stopper are connected, the stopper joint is at the spacing inslot, the upper surface at the bottom plate is seted up in the spacing groove.

As a further scheme of the invention: the telescopic component comprises a telescopic rod, a spring is sleeved on the outer surface of the telescopic rod, and the two ends of the telescopic rod and the spring are fixedly connected with the right side face of the clamping plate and the left side face of the inner wall of the groove respectively.

As a further scheme of the invention: the screw thread opposite direction that the threaded rod outer wall left and right sides set up, the top of cardboard sets up to arc, and two cardboards are located two connecting holes that the bottom plate lower surface was seted up respectively, the left and right sides of bottom plate upper surface all is provided with the crash pad, and two crash pads are located projection equipment's the left and right sides respectively.

As a further scheme of the invention: the lower surface of the bottom plate is fixedly connected with the upper surface of the placing box, a partition plate is arranged in the placing box, and a plurality of anti-skidding protrusions are arranged on the lower surface of the pressing plate.

The invention has the beneficial effects that:

1. the invention is provided with a threaded rod, threaded caps, connecting plates, clamping teeth, gears, torsional springs, sleeves, a sleeve rod, a pressure plate, a bottom plate, a base and projection equipment, when the device is stored and carried, a rotating component is rotated, the threaded rod rotates and simultaneously two threaded caps are close to each other, as a rope disc is fixed with the bottom plate and the clamping rod is clamped in a fixed groove, the sleeve rotates and simultaneously can wind a inhaul cable through the rope disc, the inhaul cable can drive the clamping rod to move in the pulling process, so that the clamping rod can be effectively separated from the fixed groove, then the sleeve rod retracts into the sleeve through the pulling action of a first elastic component, when the two connecting plates respectively drive the two clamping teeth to be separated from the two gears, the corresponding two sleeves are close to each other through the action of a plurality of torsional springs, the rotating component is reversely rotated after the sleeve rotates for a certain angle, so that the two threaded caps are far away from each other in the rotating, the two connecting plates respectively drive the two clamping teeth to be clamped into the two gears, so that the sleeve can be effectively limited, the device can be effectively folded and stored, teaching personnel can conveniently carry the projection device and use the projection device in different places, and the applicability of the device is improved;

2. the invention is provided with the projection equipment, the bottom plate, the base, the clamping plate, the spring, the clamping groove, the handle, the telescopic rod and the limiting block, when the projection equipment needs to be disassembled and assembled, the teacher can pull the two handles to drive the two clamping plates to mutually approach each other, so that the clamping plates extrude the telescopic rod for a certain distance, at the moment, the two clamping plates and the two clamping grooves are separated from a clamping state, and the teacher can lift the projection equipment to disassemble the projection equipment, when the projection equipment is installed, the teaching staff only need to press the base because the top of the clamping plates is the cambered surface, so that the two clamping plates slide on the inner walls of the two clamping grooves, when the bottom plate is contacted with the base, the elastic force of the two springs effectively supports the two clamping plates, so that the clamping plates are effectively clamped in the clamping grooves, the installation of the projection equipment can be completed, and the projection equipment can be conveniently dismounted, replaced and maintained by staff members, so that the device can be conveniently used by the staff members;

3. the projection equipment fixing device is provided with the limiting block, the limiting groove, the pressing plate, the loop bar, the anti-skidding protrusions and the anti-collision pad, the limiting block is inserted into the limiting groove to install the projection equipment, the projection equipment can be effectively limited, the stability of installation of the projection equipment is improved, the pressing plate can be always attached to a placing surface due to the fact that the bottom of the loop bar is movably connected with the pressing plate through the pin shaft, the placing stability of the projection equipment is further improved due to the fact that the pressing plate is matched with the anti-skidding protrusions arranged at the bottom of the pressing plate, the projection effect is improved, and the projection equipment fixing device is quite.

Drawings

FIG. 1 is a schematic cross-sectional view of the front view of the present invention;

FIG. 2 is a schematic cross-sectional view of the bottom plate of the present invention;

FIG. 3 is a schematic cross-sectional view of a bottom plate of the present invention;

FIG. 4 is a rear view of the base of the present invention;

FIG. 5 is an enlarged schematic view of the structure of the present invention at A;

FIG. 6 is a front cross-sectional view of the sleeve of the present invention;

FIG. 7 is an enlarged view of the structure of the present invention at B;

in the figure: 1 bottom plate, 2 bases, 3 projection equipment, 4 threaded rods, 5 screw caps, 6 connecting plates, 7 connecting covers, 8 latches, 9 gears, 10 baffles, 11 connecting shafts, 12 shaft sleeves, 13 torsion springs, 14 sleeves, 15 pulleys, 16 loop bars, 17 pressing plates, 18 rotating assemblies, 19 grooves, 20 clamping plates, 21 clamping grooves, 22 telescopic assemblies, 221 telescopic rods, 222 springs, 23 placing holes, 24 handles, 25 limiting blocks, 26 limiting grooves, 27 anti-collision pads, 28 placing boxes, 29 inhaul cables, 30 first elastic parts, 31 clamping rods, 32 fixing grooves, 33 baffles, 34 second elastic parts and 35 rope reels.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-7, the invention provides an automatic teaching projection device, which comprises a bottom plate 1, wherein a base 2 is lapped on the upper surface of the bottom plate 1, the upper surface of the base 2 is fixedly connected with the lower surface of a projection device 3, the left side surface and the right side surface of the inner wall of the base 2 are movably connected with a threaded rod 4 through a rotating assembly 18, the left side surface and the right side surface of the outer surface of the threaded rod 4 are respectively in threaded connection with a threaded cap 5, the lower surface of the threaded cap 5 is fixedly connected with the upper surface of a connecting plate 6, the left side surface of the connecting plate 6 is fixedly connected with the right side surface of a latch 8, the two latches 8 are positioned in a connecting cover 7, the upper surface of the connecting cover 7 is fixedly connected with the lower surface of the bottom plate 1, the latch 8 is engaged with.

The two ends of a connecting shaft 11 are clamped on the opposite surfaces of two baffle plates 10 through shaft sleeves 12, the upper surfaces of the four baffle plates 10 are fixedly connected with the lower surface of a bottom plate 1, the opposite surfaces corresponding to the two baffle plates 10 are fixedly connected with torsion springs 13, the ends corresponding to the two torsion springs 13, which are close to each other, are fixedly connected with the outer wall of the connecting shaft 11, two sleeves 14 are clamped on the outer wall of the connecting shaft 11, the two sleeves 14 are respectively positioned between the two corresponding gears 9, sleeve rods 16 are sleeved in the sleeves 14, the bottom ends of the sleeve rods 16 are movably connected with the upper surfaces of pressure plates 17 through pin shafts, through the arrangement of the sleeve rods 16 and the pressure plates 17, the bottom ends of the sleeve rods 16 are movably connected with the pressure plates 17 through pin shafts, the pressure plates 17 can be always attached to a placing surface, in cooperation with anti-skid protrusions arranged at the bottoms of the pressure plates 17, the placing stability, the equal fixedly connected with reel 35 in the left and right sides of 1 lower surface of bottom plate, connecting axle 11 passes the through-hole that the reel 35 openly seted up, the surface winding of reel 35 has cable 29, cable 29 twines at the surface of pulley 15 and pass the left end fixed connection of dog 33 and kelly 31, fixed slot 32 has all been seted up to the top and the below of the 16 left surface of loop bar, kelly 31 passes sleeve 14 and the joint is being located top fixed slot 32, sleeve 14's left surface and the right flank fixed connection of dog 33, second elastic component 34 has been cup jointed to cable 29's surface, the both ends of second elastic component 34 respectively with the left surface of dog 33 inner wall and the left end fixed connection of kelly 31, the top of loop bar 16 is through the upper surface fixed connection of first elastic component 30 with sleeve 14 inner wall.

As shown in fig. 1, 3 and 4, the upper surface of the base plate 1 is provided with two grooves 19, the grooves 19 are slidably connected with clamping plates 20, the clamping plates 20 are clamped in the clamping grooves 21, the two clamping grooves 21 are both arranged on the lower surface of the base 2, the right side surfaces of the clamping plates 20 are fixedly connected with the right side surfaces of the inner walls of the grooves 19 through telescopic components 22, the back surfaces of the clamping plates 20 are fixedly connected with handles 24, through the mutual cooperation between the telescopic components 22 and the clamping plates 20, as the top parts of the clamping plates 20 are arc surfaces, a teacher only needs to press down the base 2 to enable the two clamping plates 20 to slide on the inner walls of the two clamping grooves 21, when the base plate 1 contacts with the base 2, the elastic forces of the two springs 222 effectively support the two clamping plates 20, so that the clamping plates 20 can be effectively clamped into the clamping grooves 21, the installation of the projection device 3 can be completed, the projection device 3 is convenient to install, the handles, the one side that two handles 24 are close to each other all is provided with the pull ring, and through setting up handle 24, handle 24 makes it drive two cardboard 20 and is close to each other, makes cardboard 20 extrusion telescopic link 221 one section distance, and two cardboard 20 and two draw-in grooves 21 break away from the joint state this moment, and the professor personnel lift projection equipment 3 and can pull down it, and is very convenient.

As shown in fig. 1 and 3, the lower surface of base 2 and the last fixed surface of stopper 25 are connected, stopper 25 joint is in spacing groove 26, mutually support through between stopper 25 and the spacing groove 26, insert the stopper 25 and install projection apparatus 3 in the spacing groove 26, can effectively carry on spacingly to projection apparatus, the improvement is to the stability of projection apparatus 3 installation, the upper surface at bottom plate 1 is seted up to spacing groove 26, telescopic component 22 includes telescopic link 221, spring 222 has been cup jointed to the surface of telescopic link 221, the both ends of telescopic link 221 and spring 222 respectively with the right flank of cardboard 20 and the left surface fixed connection of recess 19 inner wall.

As shown in fig. 1 and 5, the directions of the threads arranged on the left and right sides of the outer wall of the threaded rod 4 are opposite, the top of the clamping plate 20 is arc-shaped, the two clamping plates 20 are respectively positioned in the two connecting holes formed in the lower surface of the bottom plate 1, the left and right sides of the upper surface of the bottom plate 1 are respectively provided with the anti-collision pads 27, the two anti-collision pads 27 can effectively protect the projection equipment 3 and prevent the projection equipment 3 from being greatly damaged by external force impact, the two anti-collision pads 27 are respectively positioned on the left and right sides of the projection equipment 3, the lower surface of the bottom plate 1 is fixedly connected with the upper surface of the placing box 28, the placing box 28 can be used for placing some teaching tools for facilitating daily use of teaching staff by arranging the placing box 28, and the partition plates are arranged in the placing box 28, so that articles can be effectively placed in a classified, the lower surface of the pressure plate 17 is provided with a plurality of anti-slip protrusions.

The working principle of the invention is as follows: when the device needs to be stored and carried, the rotating assembly 18 is rotated, two threaded caps 5 are close to each other when the threaded rod 4 rotates, when two connecting plates 6 drive two latches 8 to be separated from two gears 9 respectively, two corresponding sleeves 14 can be close to each other through the action of the torsion springs 13, as the rope disc 35 is fixed with the bottom plate 1 and the clamping rod 31 is clamped in the fixing groove 32, the sleeve 14 can wind the inhaul cable 29 through the rope disc 35 when rotating, the inhaul cable 29 can drive the clamping rod 31 to move in the process of being pulled, the clamping rod 31 can be effectively separated from the fixing groove 32, then the sleeve rod 16 retracts into the sleeve 14 through the pulling action of the first elastic piece 30, the rotating assembly 18 is rotated reversely after the sleeve 14 rotates for a certain angle, so that the two threaded caps 5 are far away from each other in the process of rotating the threaded rod 4, and the two connecting plates 6 drive the two latches 8 to be clamped into the two gears 9 respectively, the device can be folded and stored, when the device needs to be unfolded, the rotating component 18 is rotated reversely, so that the two latch teeth 8 are close to each other and are respectively separated from the two gears 9, then the sleeve 14 is shifted, in the process of inwards rotating the sleeve 14 to a certain angle, the cable 29 can be wound on the rope disc 35, similarly, the clamping rod 31 is separated from the fixed groove 32, after the sleeve rod 16 is directly pulled down for a certain distance, the clamping rod 31 can be clamped into the fixed groove 32 through the second elastic part 34, when the projection equipment 3 needs to be disassembled and assembled, a teacher can drive the two clamping plates 20 to mutually approach by pulling the two handles 24, so that the clamping plates 20 extrude the telescopic rod 221 for a certain distance, at the moment, the two clamping plates 20 are separated from the two clamping grooves 21, the projection equipment 3 can be disassembled by lifting the teacher, when the projection equipment 3 is installed, because the top of the clamping plates 20 is a cambered surface, the staff of professor only need push down base 2 for in the stopper 25 effectively blocks into draw-in groove 21, make two cardboard 20 slide at two draw-in groove 21 inner walls, the elasticity of two springs 222 is effectively supported two cardboard 20 when bottom plate 1 contacts with base 2, makes its cardboard 20 effectively block into in the draw-in groove 21, can accomplish the installation to projection equipment 3.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides an automatic change teaching projection arrangement, includes bottom plate (1), its characterized in that: a base (2) is lapped on the upper surface of the bottom plate (1), the upper surface of the base (2) is fixedly connected with the lower surface of the projection equipment (3), the left side surface and the right side surface of the inner wall of the base (2) are movably connected with threaded rods (4) through rotating assemblies (18), the left side and the right side of the outer surface of the threaded rod (4) are both in threaded connection with threaded caps (5), the lower surface of the screw cap (5) is fixedly connected with the upper surface of the connecting plate (6), the left side surface of the connecting plate (6) is fixedly connected with the right side surface of the latch (8), the two latches (8) are both positioned in the connecting cover (7), the upper surface of the connecting cover (7) is fixedly connected with the lower surface of the bottom plate (1), the clamping teeth (8) are meshed with the two gears (9), and the two gears (9) are clamped on the outer surface of the same connecting shaft (11);

the two ends of the connecting shaft (11) are connected with opposite surfaces of the two baffles (10) through shaft sleeves (12), the upper surfaces of the four baffles (10) are fixedly connected with the lower surface of the bottom plate (1), the opposite surfaces of the two baffles (10) are fixedly connected with torsion springs (13), one ends of the two torsion springs (13) close to each other are fixedly connected with the outer wall of the connecting shaft (11), the outer wall of the connecting shaft (11) is connected with two sleeves (14), the two sleeves (14) are respectively positioned between the two gears (9), sleeves (16) are sleeved in the sleeves (14), the bottom ends of the sleeves (16) are movably connected with the upper surface of a pressing plate (17) through pin shafts, pulleys (15) are arranged below the left side surface of the sleeves (14), and rope discs (35) are fixedly connected with the left side and the right side surfaces of the bottom plate (1), the connecting shaft (11) penetrates through a through hole formed in the front face of the rope disc (35), a pull rope (29) is wound on the outer surface of the rope disc (35), the inhaul cable (29) is wound on the outer surface of the pulley (15) and passes through the stop block (33) to be fixedly connected with the left end of the clamping rod (31), the upper part and the lower part of the left side surface of the loop bar (16) are both provided with a fixed groove (32), the clamping rod (31) penetrates through the sleeve (14) and is clamped in the upper fixing groove (32), the left side surface of the sleeve (14) is fixedly connected with the right side surface of the stop block (33), the outer surface of the inhaul cable (29) is sleeved with a second elastic piece (34), two ends of the second elastic piece (34) are respectively fixedly connected with the left side surface of the inner wall of the stop block (33) and the left end of the clamping rod (31), the top end of the loop bar (16) is fixedly connected with the upper surface of the inner wall of the sleeve (14) through a first elastic piece (30).

2. The automated teaching projection device of claim 1, wherein: two grooves (19) are formed in the upper surface of the bottom plate (1), clamping plates (20) are connected in the grooves (19) in a sliding mode, the clamping plates (20) are connected in clamping grooves (21) in a clamping mode, the two clamping grooves (21) are formed in the lower surface of the base (2), and the right side face of each clamping plate (20) is fixedly connected with the right side face of the inner wall of each groove (19) through a telescopic assembly (22).

3. The automated teaching projection device of claim 2, wherein: the back fixedly connected with handle (24) of cardboard (20), handle (24) set up in placing hole (23), and two are placed hole (23) and are all seted up at the back of bottom plate (1), and the one side that two handle (24) are close to each other all is provided with the pull ring.

4. The automated teaching projection device of claim 1, wherein: the lower surface of base (2) and the upper surface fixed connection of stopper (25), stopper (25) joint is in spacing groove (26), the upper surface at bottom plate (1) is seted up in spacing groove (26).

5. The automated teaching projection device of claim 2, wherein: the telescopic assembly (22) comprises a telescopic rod (221), a spring (222) is sleeved on the outer surface of the telescopic rod (221), and two ends of the telescopic rod (221) and the spring (222) are fixedly connected with the right side face of the clamping plate (20) and the left side face of the inner wall of the groove (19) respectively.

6. The automated teaching projection device of claim 1, wherein: the thread direction that the threaded rod (4) outer wall left and right sides set up is opposite, the top of cardboard (20) sets up to arc, and two cardboard (20) are located two connecting holes that bottom plate (1) lower surface was seted up respectively, the left and right sides of bottom plate (1) upper surface all is provided with crashproof pad (27), and two crashproof pads (27) are located the left and right sides of projection equipment (3) respectively.

7. The automated teaching projection device of claim 1, wherein: the lower surface of the bottom plate (1) is fixedly connected with the upper surface of the placing box (28), a partition plate is arranged in the placing box (28), and a plurality of anti-skidding protrusions are arranged on the lower surface of the pressing plate (17).