CN113188020A

CN113188020A - Multimedia teaching display device

Info

Publication number: CN113188020A
Application number: CN202110568957.6A
Authority: CN
Inventors: 张蓄金; 曹璐; 申菲; 张少哲; 左世凯
Original assignee: Henan Vocational College of Applied Technology
Current assignee: Henan Vocational College of Applied Technology
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-07-30

Abstract

The invention discloses a multimedia teaching display device, which belongs to the technical field of multimedia teaching equipment, and has the technical scheme that the device comprises a box body and a touch control integrated machine, wherein the upper part of the box body is provided with an opening; the back of the box body is provided with an accommodating bulge, an accommodating groove is formed in the accommodating bulge, a telescopic supporting rod is arranged in the accommodating groove, and the upper end of the telescopic supporting rod is hinged with the side wall of the accommodating groove; the lower end of the telescopic supporting rod is hinged with an installation block, and a substrate detachably connected with the installation block is arranged on the installation block; the base plate is provided with a plurality of positioning holes penetrating through the base plate; supporting legs are arranged at two ends of the lower part of the box body and comprise supporting plates, connecting studs and inclined struts, and each inclined strut comprises an obliquely arranged strut part and a pressure piece part positioned at the lower end of the strut part; the connecting stud is in threaded connection with the box body; the invention can be placed and used in outdoor environment well.

Description

Multimedia teaching display device

Technical Field

The invention relates to the technical field of multimedia equipment, in particular to a multimedia teaching display device.

Background

In modern teaching, multimedia equipment is widely used, and multi-dimensional teaching such as vision and sound is used in the collection, so that students can better accept knowledge required to master. In the teaching of some specialty courses, the student often need carry out outdoor practice, for example specialty such as zoology, botany, microbiology, geology, when past, because do not have external power supply, the outdoor multimedia teaching degree of difficulty is great, can only show through notebook computer, and notebook computer not only screen size is little, does not also be convenient for showing in the field and uses in addition. Along with the rise of electric automobile, the battery of the new generation of electric automobile not only can charge for automobile self to use, but also can supply power to other equipment as an external power supply, and then has brought convenient basis for the use of open-air multimedia.

The prior multimedia teaching display device can refer to the Chinese invention patent application document with the application publication number, the utility model discloses a multimedia image display device, including show screen and landing leg, landing leg outside bottom mounting has fixing bearing, the fixing bearing outside is fixed with first bevel gear, the first bevel gear outside is fixed with the carousel, first bevel gear bottom meshing has second bevel gear, second bevel gear top is fixed with first ring, first ring rotates with the landing leg to be connected, be fixed with the screw rod in the middle of the second bevel gear bottom, the screw rod bottom is rotated there is the internal thread pipe, internal thread pipe outside symmetry is fixed with the lift slider, internal thread pipe bottom mounting has the universal wheel, second bevel gear bottom mounting has the second ring, second ring bottom is rotated and is provided with and accomodates the pipe, accomodate the inside bilateral symmetry of pipe and seted up the spout, the lift slider is located inside the spout.

Foretell multimedia image display device supports through the landing leg of bottom, however under outdoor environment, the many unevenness on ground, multimedia image display device's length and width size is great, but thickness is less to multimedia image display device can't firm place when using, easily emptys under the effect of external force, influences the outdoor effect of teaching the show.

Disclosure of Invention

The invention aims to provide a multimedia teaching display device which can be placed and used in an outdoor environment well.

The technical purpose of the invention is realized by the following technical scheme: a multimedia teaching display device comprises a box body and a touch control all-in-one machine, wherein the upper part of the box body is provided with an opening, the touch control all-in-one machine is arranged in the box body, and a lifting mechanism used for driving the touch control all-in-one machine to lift in the vertical direction is arranged in the box body at the lower part of the touch control all-in-one machine;

the back of the box body is provided with an accommodating bulge, the accommodating bulge is provided with an accommodating groove, a telescopic supporting rod is arranged in the accommodating groove, and the upper end of the telescopic supporting rod is hinged with the side wall of the accommodating groove; the lower end of the telescopic supporting rod is hinged with an installation block, and a substrate detachably connected with the installation block is arranged on the installation block; the substrate is provided with a plurality of positioning holes penetrating through the substrate;

supporting legs are arranged at two ends of the lower part of the box body, each supporting leg comprises a supporting plate, a connecting stud positioned at the upper part of the supporting plate and at least three inclined struts fixed at the lower part of the supporting plate, and each inclined strut comprises an obliquely arranged strut part and a pressing piece part positioned at the lower end of the strut part; the connecting stud is in threaded connection with the box body.

By adopting the scheme, when the multimedia teaching display device is stored in daily life, the touch control integrated machine is stored in the box body, when the multimedia teaching display device is required to be used for teaching, the box body is supported by the supporting legs at the lower part of the box body, the lower surface of the box body is separated from the ground, the supporting legs are supported in a multi-point mode by adopting a plurality of inclined struts, the supporting area is large, and the influence of the flatness of the ground is not easy to affect; the support heights of the two support legs can be finely adjusted by adjusting the meshing length of the connecting stud;

the telescopic supporting rod is taken out of the accommodating groove, the base plate is installed at the lower end of the telescopic supporting rod, the base plate is fixed on the foundation through the positioning holes by means of tools such as ground nails, the box body is obliquely supported through the telescopic supporting rod, and therefore the box body can be stably placed on the ground when in use and is not prone to toppling under the action of external force;

after the multimedia teaching display device is placed, the touch all-in-one machine is driven through the lifting mechanism, and the touch all-in-one machine is lifted to the upper part of the box body, so that teaching display can be performed.

Preferably, the lifting mechanism comprises a primary lifting component and a secondary lifting component; the primary lifting assembly comprises a lower mounting plate and a primary driving assembly arranged below the lower mounting plate; the secondary lifting assembly comprises an upper mounting plate positioned above the lower mounting plate and a secondary driving assembly arranged between the upper mounting plate and the lower mounting plate; the upper mounting plate and the lower mounting plate are respectively connected with the box body in a sliding manner along the vertical direction; the touch control all-in-one machine is arranged on the upper portion of the upper mounting plate.

By adopting the scheme, the lifting mechanism adopts two-stage driving, so that the height stroke of each stage of lifting is reduced, and the lifting mechanism is more stable when used for lifting the touch control integrated machine; and different driving components can be arranged according to different lifting characteristics of each section, so that the multimedia teaching display device is easier to use when in use.

Preferably, the primary driving assembly comprises two groups of brace rod assemblies respectively arranged at two sides of the lower part of the lower mounting plate, each brace rod assembly comprises two lifting brace rods which are intersected in an X shape, and the middle parts of the two lifting brace rods are hinged with each other;

the upper end and the lower end of the support rod assembly are respectively provided with a slide rail, the two ends of the lifting support rod are respectively hinged with a lifting slide block, and the lifting slide block is connected with the slide rails in a sliding manner along the length direction of the slide rails;

a screw rod pair with the length direction along the length direction of the slide rail is arranged between the two support rod components; the two ends of the wire aligning screw rod are respectively provided with a left-handed sliding block meshed with the left-handed screw rod and a right-handed sliding block meshed with the right-handed screw rod, and one end of the wire aligning screw rod is provided with a driving motor for driving the wire aligning screw rod to rotate; the left-handed sliding block and the right-handed sliding block are respectively and fixedly connected with the lifting sliding blocks on the two sides of the left-handed sliding block and the right-handed sliding block.

Through adopting above-mentioned scheme, adopt two to be the crossing lift vaulting poles of X type to support the lower part mounting panel, the support area is big, adopt transversely arranged to the cooperation of silk screw rod and levogyration slider and dextrorotation slider, and then rotate the drive to the silk screw rod through driving motor, make even levogyration slider and dextrorotation slider be close to each other or keep away from, thereby drive lower part mounting panel goes up and down in vertical direction, one-level drive assembly has lower height to account for than, practice thrift the space, thereby make the whole volume that has less of device.

Preferably, the secondary lifting assembly comprises a lifting electric push rod and two groups of guide assemblies respectively arranged at two sides of the lifting electric push rod; a piston rod of the lifting electric push rod is vertically arranged, a rod body of the lifting electric push rod is fixedly connected with the lower mounting plate, and a piston rod of the lifting electric push rod is fixedly connected with the upper mounting plate; the guide assembly comprises a guide post and a guide sleeve for being plugged with the guide post; the guide post is fixedly connected with the upper mounting plate, and the guide sleeve is fixedly connected with the lower connecting plate.

Through adopting above-mentioned scheme, flexible through lift electric putter's piston rod, and then drive upper portion mounting panel and slide in vertical direction to it is spacing to carry out through the cooperation of guide post and uide bushing, thereby can convenient and fast's upper portion mounting panel goes up and down to drive, and go up and down steadily.

Preferably, the peripheral surface of the guide post is provided with a plurality of lubricating grooves arranged along the length direction of the guide post, and the lower part of the guide sleeve is circumferentially provided with a plurality of exhaust holes penetrating through the peripheral wall of the guide sleeve.

By adopting the scheme, lubricating grease can be conveniently added between the guide column and the sleeve through the arrangement of the lubricating groove, so that the lifting driving resistance of the lifting electric push rod to the touch control integrated machine is reduced; and through the setting of exhaust hole, the inside atmospheric pressure of uide bushing when balanced guide post slides in the uide bushing to make sliding resistance littleer.

Preferably, a connection turntable is fixed at the lower part of the touch control integrated machine and is rotatably connected with the upper mounting plate.

Through adopting above-mentioned scheme, the touch-control all-in-one is installed on the mounting panel of upper portion through connecting the carousel, and then when using multimedia teaching display device, can carry out circumferential direction to the touch-control all-in-one, and then the convenience is demonstrateed each viewer.

Preferably, the upper part of the upper mounting plate is provided with an annular chute, the lower part of the connecting turntable is provided with a positioning lug, and the positioning lug can circumferentially slide along the annular chute; the lower surface of the connecting turntable at the positioning lug is provided with an installation cavity, and a positioning spring for vertically applying force to the positioning lug is arranged in the installation cavity; an operating rod is fixed on the upper portion of the positioning lug, the operating rod protrudes out of the upper surface of the connecting turntable, a positioning groove is formed in the annular sliding groove, and when the positioning lug is located at the position of the positioning groove, the touch control all-in-one machine is aligned with the opening of the box body.

By adopting the scheme, when the touch control integrated machine needs to be rotated, the positioning lug is separated from the positioning groove by pulling the operating rod upwards, and then the positioning lug slides in the circumferential direction in the positioning groove, so that the touch control integrated machine is rotated; when the touch all-in-one machine is required to be stored in the box body, when the positioning protrusions rotate to the positions of the positioning grooves, the positioning protrusions fall into the positioning grooves under the acting force of the positioning springs, and the touch all-in-one machine is positioned through the matching of the positioning protrusions and the positioning grooves, so that the touch all-in-one machine is prevented from being circumferentially swung when the touch all-in-one machine is stored, and the storage of the touch all-in-one machine is influenced.

Preferably, the telescopic supporting rod comprises an upper rod body and a lower rod body, and the upper rod body is axially inserted into the lower rod body; the circumferential surface of the lower rod body is provided with a locking bolt handle which is used for locking and fixing the upper rod body.

Through adopting above-mentioned scheme, flexible bracing piece comprises the upper portion body of rod and the lower part body of rod of plug-in connection, supports tightly to the upper portion body of rod through locking bolt handle, and then carries out the relative positioning with the upper portion body of rod and the lower part body of rod to can convenient and fast adjust the length of flexible bracing piece.

Preferably, the two sides of the box body are respectively fixed with a storage box for placing the substrate.

Through adopting above-mentioned scheme, through the setting of case, and then when accomodating multimedia teaching display device, conveniently accomodate the backup pad and place.

Preferably, one end of the upper part of the box body is provided with a telescopic pull rod.

Through adopting above-mentioned scheme, through being provided with flexible pull rod in box body upper portion one end, and then when smooth highway section removes multimedia teaching display device, through pulling out flexible pull rod, and then the universal caster of cooperation box body lower part conveniently removes multimedia teaching display device.

In conclusion, the invention has the following beneficial effects:

1. when the multimedia teaching display device is stored daily, the touch control integrated machine is stored in the box body, when the multimedia teaching display device is required to be used for teaching, the box body is supported through the supporting legs at the lower part of the box body, the lower surface of the box body is separated from the ground, the supporting legs are supported in a multi-point mode through a plurality of inclined struts, the supporting area is large, and the influence of the flatness of the ground is not easy to affect; the support heights of the two support legs can be finely adjusted by adjusting the meshing length of the connecting stud; take out flexible bracing piece from holding the groove, and then with base plate mounting in flexible bracing piece lower extreme to through instruments such as ground nail, utilize the locating hole to fix the base plate on the ground, carry out the diagonal bracing through flexible bracing piece to the box body, thereby make the box body when using, can be stable place subaerial, under the effect of external force, difficult emergence is emptyd.

2. The lifting mechanism adopts two-stage driving, so that the height stroke of each stage of lifting is reduced; one-level lifting unit adopts two to be the crossing lift vaulting pole of X type to support the lower part mounting panel, and the support area is big, adopts transverse arrangement to the cooperation of silk screw rod and levogyration slider and dextrorotation slider, and then rotates the drive to the silk screw rod through driving motor, and then drives the lower part mounting panel and slides in vertical direction, makes one-level drive assembly have lower height and accounts for the ratio, practices thrift the space.

3. The touch control integrated machine is arranged on the upper mounting plate through the rotating connection of the connecting turntable and the upper mounting plate, and structures such as a positioning lug, a positioning groove and a positioning spring are arranged between the connecting turntable and the upper mounting plate, so that the touch control integrated machine can be rotated circumferentially when teaching display is carried out, and therefore, each viewer can conveniently learn; through the cooperation of locating lug and positioning groove, and then can align the opening of touch-control all-in-one and box body fast, and then conveniently accomodate the touch-control all-in-one.

Drawings

Fig. 1 is a schematic structural diagram of a multimedia teaching display device.

Fig. 2 is a schematic structural diagram showing the positional relationship between the support legs and the casters.

Fig. 3 is a schematic structural view of the supporting foot.

Fig. 4 is a schematic structural view showing the telescopic support rod.

Fig. 5 is a schematic structural view showing the elevating mechanism.

Fig. 6 is a schematic structural view of the guide assembly.

Fig. 7 is a schematic structural view showing a positional relationship between the annular chute and the positioning groove.

FIG. 8 is a schematic view of the positioning boss in mating relationship with the upper mounting plate.

In the figure, 1, a box body; 12. an accommodating projection; 12. accommodating grooves; 13. a universal caster; 14. a storage box; 15. a telescopic pull rod; 2. a touch control integrated machine; 22. connecting the rotary table; 23. positioning the bump; 24. an operating lever; 25. a positioning spring; 3. supporting legs; 31. a support plate; 32. connecting a stud; 33. bracing; 34. a strut section; 35. a pressing piece part; 4. a telescopic support rod; 41. an upper rod body; 412. a rectangular protrusion; 42. a lower rod body; 421. a jack; 422. positioning the chute; 43. locking the bolt handle; 5. mounting blocks; 6. a substrate; 61. a base hole; 7. a primary lifting assembly; 71. a lower mounting plate; 72. a slide rail; 73. a lifting slide block; 74. a lifting stay bar; 75. a screw rod is aligned; 76. a left-handed slider; 77. a right-handed sliding block; 78. a drive motor; 8. a secondary lifting assembly; 81. an upper mounting plate; 811. an annular chute; 812. a positioning groove; 82. lifting the electric push rod; 83. a guide post; 831. a lubrication groove; 84. A guide sleeve; 841. and (4) exhausting holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b):

the utility model provides a multimedia teaching display device, hereinafter for short display device, refers to fig. 1 and fig. 2, is provided with open-ended box body 1 and sets up the touch-control all-in-one 2 in box body 1 including upper portion, is provided with the elevating system that is used for driving touch-control all-in-one 2 and goes up and down in vertical direction in the box body 1 of the lower part of touch-control all-in-one 2.

Referring to fig. 1 to 3, casters 13 and support legs 3 are provided on the bottom surface of the case 1. The support foot 3 comprises a support plate 31, a connecting stud 32 positioned on the upper part of the support plate 31, and at least three inclined struts 33 fixed on the lower part of the support plate 32. The diagonal brace 33 includes a brace portion 331 provided obliquely and a pressing piece portion 332 located at a lower end of the brace portion 331. The connecting stud 32 is screwed with the box body 1. One end of the upper part of the box body 1 is provided with a telescopic pull rod 15. When the display device is manually moved, the meshing length of the connecting stud 32 and the box body 1 is adjusted, so that the universal caster 13 is in contact with the ground for supporting; through pulling out telescopic pull rod 15, and then remove display device through telescopic pull rod 15 cooperation universal caster 13, convenient operation is swift. When the multimedia teaching display device is needed to be used for teaching, the box body 1 is supported through the supporting legs 3 at the lower part of the box body 1, the lower surface of the box body 1 is separated from the ground, the supporting legs 3 are supported at multiple points through the multiple inclined struts 33, the supporting area is large, and the influence of the flatness of the ground is not easy to affect; the support height of the two support feet 3 can also be finely adjusted by adjusting the engagement length of the connecting stud 32.

Referring to fig. 1 and 4, storage cases 14 are fixed to both sides of the case body 1, respectively. The back of box body 1 is provided with and holds arch 11, holds and has seted up holding tank 12 on arch 11, is provided with flexible bracing piece 4 in the holding tank 12. The upper end of the telescopic support rod 4 is hinged with the side wall of the accommodating groove 12; the lower extreme of flexible bracing piece 4 articulates there is installation piece 5, is provided with on the installation piece 5 and can dismantle the base plate 6 of being connected with installation piece 5. The substrate 6 is provided with a plurality of positioning holes penetrating through the substrate 6. The retractable support rod 4 is taken out from the accommodating groove 12, the substrate 6 is taken out from the storage box 14, the retractable support rod 4 is mounted at the end part of the retractable support rod 4, and the length of the retractable support rod 4 is adjusted, so that when the substrate 6 is placed on the ground, the retractable support rod 4 can obliquely support the box body 1. Through instruments such as ground nail, utilize the locating hole to fix base plate 6 subaerial to can be stable place the support to box body 1. When the retractable support rod 4 is stored, the substrate 6 and the mounting block 5 are detached, and the substrate 6 is placed in the storage box 14.

Referring to fig. 1 and 4, the telescopic supporting rod 4 includes an upper rod body 41 and a lower rod body 42, wherein the upper rod body 41 is axially inserted into the lower rod body 42; a lock bolt handle 43 for locking and fixing the upper rod 41 is provided on the circumferential surface of the lower rod 42. By sliding the upper rod body 41 and the lower rod body 42 and locking the upper rod body 41 through the locking bolt handle 43, the overall length of the telescopic support rod 4 can be adjusted conveniently and quickly.

Referring to fig. 5, the lifting mechanism includes a primary lifting assembly 7 and a secondary lifting assembly 8; the primary lift assembly 7 includes a lower mounting plate 71 and a primary drive assembly disposed below the lower mounting plate 71. The secondary lifting assembly 8 comprises an upper mounting plate 81 positioned above the lower mounting plate 71 and a secondary drive assembly disposed between the upper mounting plate 81 and the lower mounting plate 71; the upper mounting plate 81 and the lower mounting plate 71 are respectively connected with the box body 1 in a sliding way along the vertical direction; the touch control integrated machine 2 is arranged on the upper portion of the upper mounting plate 81. The lower part of the touch control integrated machine 2 is fixed with a connecting turntable 22, and the connecting turntable 22 is rotatably connected with the upper mounting plate 81.

Referring to fig. 5, the primary drive assembly includes two sets of strut assemblies disposed on opposite sides of the lower portion of the lower mounting plate 71. The stay bar assembly comprises two lifting stay bars 74 which are intersected in an X shape, and the middle parts of the two lifting stay bars 74 are hinged with each other. The upper end and the lower end of the support rod component are respectively provided with a slide rail 72, the two ends of the lifting support rod 74 are respectively hinged with a lifting slide block 73, and the lifting slide block 73 is connected with the slide rail 72 in a sliding manner along the length direction of the slide rail 72. A screw rod 75 with a length direction along the length direction of the slide rail 72 is arranged between the two support rod components; a left-handed slider 76 engaged with the left-handed screw 75 and a right-handed slider 77 engaged with the right-handed screw 75 are respectively arranged at two ends of the screw 75, and a driving motor 78 for driving the screw 75 to rotate is arranged at one end of the screw 75; the left-handed slider 76 and the right-handed slider 77 are respectively fixedly connected with the lifting sliders 73 on the two sides thereof. The pair of screw screws 75 are rotationally driven by the drive motor 78 to move the left-hand slider 76 and the right-hand slider 77 toward and away from each other, thereby driving the lower mounting plate 71 to ascend or descend in the vertical direction.

Referring to fig. 5, the second-stage lifting assembly 8 includes a lifting electric push rod 82 and two sets of guiding assemblies respectively disposed on two sides of the lifting electric push rod 82. A piston rod of the lifting electric push rod 82 is vertically arranged, a rod body of the lifting electric push rod 82 is fixedly connected with the lower mounting plate 71, and a piston rod of the lifting electric push rod 82 is fixedly connected with the upper mounting plate 81; the guide assembly comprises a guide post 83 and a guide sleeve 84 for being plugged with the guide post 83; the guide post 83 is fixedly connected with the upper mounting plate 81, and the guide sleeve 84 is fixedly connected with the lower connecting plate. The piston rod of the lifting electric push rod 82 extends, so that the touch all-in-one machine 2 is further driven to lift, and the touch all-in-one machine 2 is controlled to lift efficiently and conveniently.

Referring to fig. 5 and 6, the circumferential surface of the guide post 83 is provided with a plurality of lubrication grooves 831 along the length direction of the guide post 83, and the lower portion of the guide sleeve 84 is circumferentially provided with a plurality of exhaust holes 841 penetrating the circumferential wall of the guide sleeve 84. When the display device is used, in order to ensure that the touch control all-in-one machine 2 smoothly goes up and down, lubricating grease needs to be added between the guide columns 83 and the guide sleeves 84. Through the arrangement of the lubricating groove 831, the lubricating grease between the guide post 83 and the guide sleeve 84 is convenient to store, so that the lubricating grease is not easy to overflow. And through the arrangement of the air vent 841, the air pressure inside the guide sleeve 84 is balanced in the lifting process of the guide post 83, so that the lifting is smoother.

Referring to fig. 7 and 8, an annular sliding groove 811 is formed in an upper portion of the upper mounting plate 81, and a positioning protrusion 23 is provided at a lower portion of the connection dial 22, and the positioning protrusion 23 can slide along the annular sliding groove 811 in a circumferential direction. The lower surface of the connecting turntable at the position of the positioning lug 23 is provided with a mounting cavity, and a positioning spring 25 for applying force to the positioning lug 23 vertically is arranged in the mounting cavity. An operating rod 24 is fixed on the upper part of the positioning bump 23, the operating rod 24 protrudes out of the upper surface of the turntable, a positioning groove 812 is formed in the annular sliding groove 811, and when the positioning bump 23 is located at the position of the positioning groove 812, the touch control all-in-one machine 2 is aligned with the opening of the box body 1. Through the rotation connection of connecting carousel 22 and upper portion mounting panel 81, and then when using display device to demonstrate that imparts knowledge to students, can carry out circumferential direction to touch control all-in-one 2 to make things convenient for each viewer to watch. Through the setting of positioning structure such as positioning lug 23, positioning groove 812 and positioning spring 25, when accomodating touch-control all-in-one machine 2, through positioning lug 23 and positioning groove 812's cooperation, and then convenient quick aligns touch-control all-in-one machine 2 with the opening of box body 1 to can make things convenient for quick accomodate touch-control all-in-one machine 2 in the box body 1. When the touch integrated machine 2 needs to be rotated in the circumferential direction, the positioning protrusion is pulled only through the operating rod 24, and the touch integrated machine 2 is rotated, so that the positioning protrusion 23 is arranged in the annular sliding groove 811.

The specific implementation principle of this embodiment is as follows:

when the display device is placed by using the touch control integrated machine, the touch control integrated machine 2 is placed in the box body 1, so that the whole device has a small size, and the device is conveniently placed in a vehicle body to be moved and transported. In the place that the road surface is more smooth, the staff can move display device through the universal caster 13 of flexible pull rod 15 cooperation box body 1 bottom, and it is convenient to remove. Adjusting the meshing length of the connecting stud 32 and the box body 1, and using the supporting legs to contact and support the ground; the retractable support rod 4 is taken out from the accommodating groove 12, the substrate 6 is taken out from the storage box 14, the retractable support rod 4 is mounted at the end part of the retractable support rod 4, and the length of the retractable support rod 4 is adjusted, so that when the substrate 6 is placed on the ground, the retractable support rod 4 can obliquely support the box body 1. Through instruments such as ground nail, utilize the locating hole to fix base plate 6 subaerial to can be stable place the support to box body 1.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a multimedia teaching display device, is provided with open-ended box body (1) and sets up touch-control all-in-one (2) in box body (1) including upper portion, its characterized in that: a lifting mechanism used for driving the touch control all-in-one machine (2) to lift in the vertical direction is arranged in the box body (1) at the lower part of the touch control all-in-one machine (2);

an accommodating bulge (11) is arranged on the back of the box body (1), an accommodating groove (12) is formed in the accommodating bulge (11), a telescopic supporting rod (4) is arranged in the accommodating groove (12), and the upper end of the telescopic supporting rod (4) is hinged to the side wall of the accommodating groove (12); the lower end of the telescopic supporting rod (4) is hinged with an installation block (5), and a substrate (6) detachably connected with the installation block (5) is arranged on the installation block (5); the substrate (6) is provided with a plurality of positioning holes penetrating through the substrate (6);

supporting feet (3) are arranged at two ends of the lower part of the box body (1), each supporting foot (3) comprises a supporting plate (31), a connecting stud (32) positioned at the upper part of the supporting plate (31) and at least three inclined struts (33) fixed at the lower part of the supporting plate (32), and each inclined strut (33) comprises an obliquely arranged strut part (331) and a pressing sheet part (332) positioned at the lower end of the strut part (331); the connecting stud (32) is in threaded connection with the box body (1).

2. The multimedia teaching presentation device of claim 1, wherein: the lifting mechanism comprises a primary lifting component (7) and a secondary lifting component (8); the primary lifting assembly (7) comprises a lower mounting plate (71) and a primary driving assembly arranged below the lower mounting plate (71); the secondary lifting assembly (8) comprises an upper mounting plate (81) positioned above the lower mounting plate (71) and a secondary driving assembly arranged between the upper mounting plate (81) and the lower mounting plate (71); the upper mounting plate (81) and the lower mounting plate (71) are respectively connected with the box body (1) in a sliding manner along the vertical direction; the touch control integrated machine (2) is arranged on the upper portion of the upper portion mounting plate (81).

3. A multimedia teaching presentation apparatus as claimed in claim 2, wherein: the primary driving assembly comprises two groups of stay bar assemblies which are respectively arranged on two sides of the lower part of the lower mounting plate (71), each stay bar assembly comprises two lifting stay bars (74) which are intersected in an X shape, and the middles of the two lifting stay bars (74) are hinged with each other;

the upper end and the lower end of the supporting rod assembly are respectively provided with a sliding rail (72), the two ends of the lifting supporting rod (74) are respectively hinged with a lifting sliding block (73), and the lifting sliding block (73) is connected with the sliding rail (72) in a sliding manner along the length direction of the sliding rail (72);

a screw rod (75) with the length direction along the length direction of the slide rail (72) is arranged between the two support rod components; a left-handed sliding block (76) meshed with the left-handed screw (75) and a right-handed sliding block (77) meshed with the right-handed screw (75) are respectively arranged at two ends of the screw (75), and a driving motor (78) used for driving the screw (75) to rotate is arranged at one end of the screw (75); the left-handed sliding block (76) and the right-handed sliding block (77) are respectively fixedly connected with the lifting sliding blocks (73) on the two sides.

4. A multimedia teaching presentation apparatus as claimed in claim 2, wherein: the secondary lifting component (8) comprises a lifting electric push rod (82) and two groups of guide components which are respectively arranged on two sides of the lifting electric push rod (82); a piston rod of the lifting electric push rod (82) is vertically arranged, a rod body of the lifting electric push rod (82) is fixedly connected with the lower mounting plate (71), and a piston rod of the lifting electric push rod (82) is fixedly connected with the upper mounting plate (81); the guide assembly comprises a guide post (83) and a guide sleeve (84) which is used for being plugged with the guide post (83); guide post (83) and upper portion mounting panel (81) fixed connection, uide bushing (84) and lower part connecting plate fixed connection.

5. The multimedia teaching presentation device of claim 4, wherein: the periphery of the guide post (83) is provided with a plurality of lubricating grooves (831) arranged along the length direction of the guide post (83), and the lower part of the guide sleeve (84) is circumferentially provided with a plurality of exhaust holes (841) penetrating through the periphery wall of the guide sleeve (84).

6. A multimedia teaching presentation apparatus as claimed in claim 2, wherein: the lower part of the touch control integrated machine (2) is fixedly provided with a connecting turntable (22), and the connecting turntable (22) is rotatably connected with the upper mounting plate (81).

7. The multimedia teaching presentation device of claim 6, wherein: an annular sliding groove (811) is formed in the upper portion of the upper mounting plate (81), a positioning lug (23) is arranged on the lower portion of the connecting turntable (22), and the positioning lug (23) can slide along the circumferential direction of the annular sliding groove (811); a mounting cavity is formed in the lower surface of the connecting turntable (22) at the position of the positioning lug (23), and a positioning spring (25) for vertically applying force to the positioning lug (23) is arranged in the mounting cavity; the upper portion of location lug (23) is fixed with action bars (24), action bars (24) protrusion connection carousel (22) upper surface, set up positioning groove (812) on annular spout (811), when location lug (23) are located positioning groove (812) position department, touch-control all-in-one (2) are aligned with box body (1) opening.

8. The multimedia teaching presentation device of claim 1, wherein: the telescopic supporting rod (4) comprises an upper rod body (41) and a lower rod body (42), and the upper rod body (41) is axially inserted into the lower rod body (42); the circumferential surface of the lower rod body (42) is provided with a locking bolt handle (43) which is used for locking and fixing the upper rod body (41).

9. The multimedia teaching presentation device of claim 1, wherein: and storage boxes (14) for placing the substrates (6) are respectively fixed on two sides of the box body (1).

10. The multimedia teaching presentation device of claim 1, wherein: the bottom surface of the box body (1) is provided with a plurality of universal casters (13); one end of the upper part of the box body (1) is provided with a telescopic pull rod (15).