CN210069337U - Think projecting apparatus that political affairs theory class was used - Google Patents

Abstract

The utility model discloses a projector for thinking administration theory class, which comprises a base and a top seat, wherein the base is connected with the top seat through a telescopic vertical rod, and the top of the top seat is rotatably provided with a projector body; first rotating grooves are symmetrically formed in two sides of the top of the base respectively, second rotating grooves are symmetrically formed in two sides of the bottom of the top base corresponding to the first rotating grooves respectively, a first cam is rotatably arranged between the first rotating grooves and one end of each second rotating groove in the same side, and a second cam is arranged between the other ends of the first rotating grooves and the second rotating grooves; a cam driving device for driving the first cam and the second cam to rotate is arranged between the base and the top seat, and an anti-reverse device is respectively arranged on a wheel axle of the first cam and a wheel axle of the second cam; the bottom of the top seat is also provided with a rotating device for driving the projector body to rotate; the utility model discloses have the every single move that can carry out the projecting apparatus and the bidirectional inclination of beat adjust, the inclination is adjusted nimble, the inclination is adjusted stably, the linear continuous beneficial effect is adjusted to the inclination.

Description

Think projecting apparatus that political affairs theory class was used

Technical Field

The utility model belongs to the technical field of the projecting apparatus, concretely relates to think projecting apparatus that political affairs theory class was used.

Background

The thought political affairs theory class is an indispensable course in the course of university, and a large amount of teaching materials such as pictures, videos and the like need to be used in the thought political affairs theory class, and the teaching materials are all played through the projector. The projecting apparatus is the essential teaching equipment of modern teaching in-process, and most projecting apparatus all are fixed mounting at the top in classroom at present, and the curtain that sets up on the cooperation blackboard realizes multimedia teaching, but this kind of facility construction is expensive. In order to save cost, a plurality of schools are provided with movable projectors, but the portable and movable projectors need to be adjusted in projection angle according to the desktop when used every time, and the projection effect is guaranteed. However, each adjustment takes a lot of time, and sometimes an auxiliary tool is required to be lifted and leveled, so that the use is very inconvenient, and the teaching time is seriously delayed. The traditional projector adjusts the inclination angle of the projector through a support column with adjustable height, but the support column can only perform stage-type adjustment of specific height, so that the inclination angle of the projector is not flexible and convenient. Meanwhile, the pitching inclination angle of the projector can be adjusted only through the support column, and the deflection inclination angle still needs to be manually adjusted, so that time and labor are consumed. Especially in think political affairs theory course teaching, think political affairs theory for the course projecting apparatus need combine the course to show a large amount of pictures, video, audio content to make the teaching process more directly perceived lively, the teaching technique is more fashionable, and the teaching effect has more affinity. If the inclination angle, the height and the like of the projector are not adjusted in place, the displayed teaching materials such as pictures and videos can be influenced, the teaching quality is further reduced, and the student's feeling of acquisition is influenced. Therefore, to the single, not nimble enough defect of inclination adjustment direction of the projector of traditional application for thinking political affairs wheel branch of academic or vocational study existence, the utility model discloses a projector of thinking political affairs theory class usefulness.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a think projecting apparatus that political affairs theory class was used, realize the function at the inclination of nimble regulation projecting apparatus.

The utility model discloses a following technical scheme realizes:

a projector for thinking and political affairs theory class comprises a base and a top seat, wherein the base is connected with the top seat through a telescopic vertical rod, and a projector body is rotatably arranged at the top of the top seat; first rotating grooves are symmetrically formed in two sides of the top of the base respectively, second rotating grooves are symmetrically formed in two sides of the bottom of the top base corresponding to the first rotating grooves respectively, a first cam is rotatably arranged between the first rotating grooves and one end of each second rotating groove in the same side, and a second cam is arranged between the other ends of the first rotating grooves and the second rotating grooves; a cam driving device for driving the first cam and the second cam to rotate is arranged between the base and the top seat, and an anti-reverse device is respectively arranged on a wheel axle of the first cam and a wheel axle of the second cam; and the bottom of the top seat is also provided with a rotating device for driving the projector body to rotate.

The working principle is as follows:

the base and the footstock are connected through a plurality of telescopic vertical rods, and the footstock is lifted at the top of the base through the telescopic vertical rods. The supporting seats are arranged at the edges of the two sides of the top of the base and correspond to the wheel shaft of the first cam and the wheel shaft of the second cam respectively, the wheel shaft of the first cam and the wheel shaft of the second cam are rotatably connected with the supporting seats, and the first cam and the second cam can rotate between the supporting seats at the two sides. A first cam is rotatably arranged between one ends of the first rotary groove and the second rotary groove, a second cam is rotatably arranged between the other ends of the first rotary groove and the second rotary groove, and the rim of the first cam and the rim of the second cam are respectively contacted with the bottom surface of the first rotary groove and the bottom surface of the second rotary groove. The cam rotating devices are used for driving the first cams and the second cams to rotate, namely a first group of cam rotating devices are arranged between every two adjacent first cams and used for synchronously driving the two first cams to rotate, and a second group of cam rotating devices are arranged between every two adjacent second cams and used for synchronously driving the two second cams to rotate. Usually, the first cam and the second cam are in a state of equal height, namely, two ends of the top seat are in a state of equal height, and the top seat is in a horizontal state at the moment. After the base is placed on the placing surface, the whole projector is in an inclined state due to the fact that the placing surface has inclination, and at the moment, the inclination angle of the projector needs to be adjusted. The cam rotating device is used for driving the first cam or the second cam to rotate respectively, when the first cam or the second cam rotates, the wheel diameter of the first cam or the second cam is changed, the first cam or the second cam is not in a contour state any more, a height difference is generated between two ends of the top seat at the moment, the adjustment of the inclination angle of the top seat is realized, and the adjustment of the inclination angle of the projector body installed on the top seat in the vertical direction is further realized. After the pitching inclination angle is adjusted, the first cam or the second cam is possibly reversed under the action of the gravity of the top seat and the projector body, and the state of the first cam and the state of the second cam are locked through the anti-reversing device, so that the inclination angle of the top seat is locked. After the pitching inclination angle is adjusted, the rotating device drives the projector body to rotate for a certain angle in the plane of the top seat, and the deflection inclination angle of the projector is adjusted.

In order to better realize the utility model, furthermore, the cam driving device comprises a two-way motor, a driving gear, a driven gear and a transmission shaft, the two-way motor is arranged at the top of the base, and the driving gear is sleeved at the output shaft end of the two-way motor; one end of the transmission shaft is correspondingly sleeved with a driven gear, and the first cam and the second cam are respectively meshed with the driving gear through the transmission shaft; the transmission shaft is sleeved with an anti-reverse device.

Output shafts extend out of two ends of the bidirectional motor, and driving gears are sleeved on shaft sections of the output shafts on two sides. The two-way motor drives the driving gear to rotate, the driving gear further drives the driven gear to rotate, the driven gear further drives the transmission shaft to rotate, and the transmission shaft drives the first cam or the second cam to rotate, so that the pitching inclination angle of the top seat can be adjusted.

In order to better realize the utility model, furthermore, the anti-reversing device comprises a ratchet wheel, a ratchet, a return spring and a guiding telescopic column; the ratchet wheel is sleeved on the transmission shaft, the fixed end of the guide telescopic column is connected with the top of the base, the telescopic end of the guide telescopic column is connected with one side of the ratchet card, and the other side of the ratchet card is meshed with the ratchet wheel through the ratchet; the outer side of the guide telescopic column is coaxially provided with a return spring, one end of the return spring is connected with the top of the base, and the other end of the return spring is connected with one side of the ratchet clamp.

The reset spring is used for tightly pushing the ratchet card to enable the ratchets of the ratchet card to be attached to the rim of the ratchet wheel, and the guiding telescopic column is used for guiding the telescopic movement of the reset spring to ensure that the reset spring is telescopic along the axial direction. When the transmission shaft rotates, the ratchet wheel rotates along with the transmission shaft, the ratchet on the ratchet block is meshed with the ratchet wheel in the forward direction, namely, when the transmission shaft rotates in the forward direction, the ratchet block cannot limit the rotation of the ratchet wheel. When the transmission shaft rotates reversely, the ratchets on the ratchet block can limit the rotation of the ratchet wheel and block the ratchet wheel, so that the transmission shaft can only rotate in the forward direction but not in the reverse direction.

In order to better realize the utility model, the rotating device comprises a rotating seat, an outer gear ring, a rotating gear and a rotating motor, the rotating seat is rotatably installed through the top seat, the top of the rotating seat is connected with the bottom of the projector body, a circular boss is arranged at the bottom of the rotating seat, and the outer gear ring is sleeved on the outer edge of the circular boss; the bottom of footstock is provided with the installation cavity, install the rotation motor in the installation cavity, the output shaft end cover of rotating the motor is equipped with the rotating gear, the rotating gear meshes with outer ring gear.

The swivel mount runs through the footstock and rotates the installation, and the top of swivel mount upwards extends outside the footstock and is connected with the bottom of projecting apparatus body, and the bottom downwardly extending of swivel mount is outside the bottom of footstock, and the swivel mount bottom is provided with circular boss, and the cover is equipped with outer ring gear on the outer fringe of circular boss. The rotation motor during operation drives the running gear and rotates, and running gear and then drives outer ring gear and rotate, and then realizes driving the projecting apparatus body rotation at swivel mount and swivel mount top, realizes adjusting the beat inclination of projecting apparatus.

For better realization the utility model discloses, furtherly, be connected through flexible pole setting between the four corners of the bottom of the four corners at the top of base and footstock.

For better realization the utility model discloses, furtherly, flexible pole setting includes dead lever, telescopic link, the one end of dead lever is connected with the top of base, and the inside slip cartridge of dead lever has the one end of telescopic link, and the other end of telescopic link is connected with the bottom of footstock.

In order to achieve the above object, the present invention further provides a cam diameter of the first cam and the second cam is linearly changed.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

(1) the utility model discloses a bilateral symmetry at the top of base sets up first rotary tank, the bilateral symmetry at the bottom of footstock sets up the second rotary tank that corresponds with first rotary tank, rotate between the one end of first rotary tank and second rotary tank and set up first cam, rotate between the other end of first rotary tank and second rotary tank and set up the second cam, and drive first cam or second cam through the cam drive arrangement and rotate, make the both ends of footstock appear the difference in height, and then realize the function of adjusting the every single move inclination of the projector body on footstock and the footstock; the utility model has the beneficial effect of flexible adjustment of the pitching inclination angle of the projector;

(2) the utility model realizes the adjustment of the deflection inclination angle of the projector by rotating the swivel mount on the top seat, installing the body on the top of the swivel mount and driving the swivel mount and the projector body on the swivel mount to rotate through the rotating device; the utility model has the beneficial effect of flexible adjustment of the deflection inclination angle of the projector;

(3) the wheel diameters of the first cam and the second cam are linearly arranged, so that the linear continuous change of the height difference of the two ends of the top seat is realized, and the linear continuous adjustment of the pitching inclination angle of the top seat is further realized; the utility model discloses but the beneficial effect of linear continuous adjustment in every single move inclination with the projecting apparatus.

(4) The utility model effectively prevents the first cam or the second cam from reversing by arranging the anti-reversing device between the adjacent first cams or between the adjacent second cams; the utility model discloses have and effectively prevent that the cam from reversing, effectively guarantee the every single move inclination angle regulation stability's of projecting apparatus beneficial effect.

Drawings

Fig. 1 is a front sectional view of the present invention;

FIG. 2 is a sectional view taken along line A of FIG. 1;

FIG. 3 is a sectional view taken along line B of FIG. 1;

FIG. 4 is a schematic structural view of a cam driving device;

FIG. 5 is a schematic structural view of the anti-backup device;

FIG. 6 is a cross-sectional view taken along line C of FIG. 5;

FIG. 7 is a schematic structural view of a rotating device;

fig. 8 is a schematic structural view of the telescopic vertical rod.

Wherein: 1-a base; 2-a top seat; 3-telescopic vertical rod; 4-projector body; 5-anti-reverse device; 11-cam drive means; 33-a rotating device; 01-a first rotary trough; 02-a second rotary trough; 001-first cam; 002-a second cam; 31-a fixing rod; 32-a telescopic rod; 51-a ratchet wheel; 52-acantho; 53-a return spring; 54-guiding telescopic columns; 111-a bi-directional motor; 112-a drive gear; 113-a driven gear; 114-a drive shaft; 331-transpose; 332-outer gear ring; 333-rotating gear; 334-rotating the motor.

Detailed Description

Example 1:

the projector for the thinking and political theory course of the embodiment, as shown in fig. 1-3, includes a base 1 and a top seat 2, wherein the base 1 is connected with the top seat 2 through a telescopic vertical rod 3, and a projector body 4 is rotatably mounted on the top of the top seat 2; first rotating grooves 01 are symmetrically formed in two sides of the top of the base 1 respectively, second rotating grooves 02 are symmetrically formed in two sides of the bottom of the top base 2 corresponding to the first rotating grooves 01 respectively, a first cam 001 is rotatably arranged between the first rotating grooves 01 and one end of the second rotating grooves 02 on the same side, and a second cam 002 is arranged between the other ends of the first rotating grooves 01 and the second rotating grooves 02; a cam driving device 11 for driving the first cam 001 and the second cam 002 to rotate is arranged between the base 1 and the top seat 2, and an anti-reverse device 5 is respectively arranged on a wheel shaft of the first cam 001 and a wheel shaft of the second cam 002; the bottom of the top seat 2 is also provided with a rotating device 33 for driving the projector body 4 to rotate.

Still be provided with the controller that is used for controlling cam drive 11 and rotating device 33 between base 1 and footstock 2, connect through a plurality of flexible pole settings 3 between base 1 and the footstock 2, realize the lift of footstock 2 at base 1 top through the flexible of flexible pole setting 3. The edges of the two sides of the top of the base 1 are respectively provided with a supporting seat corresponding to the wheel axle of the first cam 001 and the wheel axle of the second cam 002, the wheel axle of the first cam 001 and the wheel axle of the second cam 002 are rotatably connected with the supporting seats, namely the first cam 001 and the second cam 002 can rotate between the supporting seats of the two sides. A first cam 001 is rotatably provided between one ends of the first rotary groove 01 and the second rotary groove 02, a second cam 002 is rotatably provided between the other ends of the first rotary groove 01 and the second rotary groove 02, and a rim of the first cam 001 or a rim of the second cam 002 is in contact with a bottom surface of the first rotary groove 01 and a bottom surface of the second rotary groove 02, respectively.

The cam rotating device 11 is used for driving the first cam 001 or the second cam 002 to rotate, and the first cam 001 and the second cam 002 are in the equal height state at ordinary times, that is, both ends of the top seat 2 are in the equal height state, and at this time, the top seat 2 is in the horizontal state. After the base 1 is placed on the placing surface, the whole projector is in an inclined state due to the inclination of the placing surface, and at this time, the inclination adjustment of the projector is needed. Drive first cam 001 or second cam 002 respectively through cam rotating device 11 and rotate, when first cam 001 or second cam 002 rotated, first cam 001 or second cam 002 pivoted wheel footpath changed, first cam 001 or second cam 002 no longer were in high state, produced difference in height between the both ends of footstock 2 this moment, realize adjusting the inclination of footstock 2, and then the realization is adjusted the inclination of the projecting apparatus body 4 of installing on footstock 2 in vertical direction.

If the cam driving device 11 drives the first cam 001 and the second cam 002 to rotate respectively, so that the first cam 001 rotates to a state that the wheel diameter is larger than that of the second cam 002, at this time, because a height difference occurs between the wheel diameter of the first cam 001 and the wheel diameter of the second cam 002, one end of the top seat 2 close to the first cam 001 is higher than one end of the top seat 2 close to the second cam 002, that is, one end of the top seat 2 close to the first cam 001 tilts relative to one end of the top seat 2 close to the second cam 002, thereby realizing adjustment of the pitch inclination angle of the top seat 2.

After the pitching inclination angle of the footstock 2 is adjusted, the first cam 001 or the second cam 002 may be reversed under the action of the gravity of the footstock 2 and the projector body 4, and at this time, the first cam 001 and the second cam 002 are locked by the anti-reversing device 5, so as to lock the inclination angle of the footstock 2. After the pitching inclination angle of the footstock 2 is adjusted, the rotating device 33 drives the projector body 4 to rotate for a certain angle in the plane of the top of the footstock 2, so as to adjust the deflection inclination angle of the projector.

Example 2:

the embodiment is further optimized on the basis of embodiment 1, as shown in fig. 4, the cam driving device 11 includes a bidirectional motor 111, a driving gear 112, a driven gear 113, and a transmission shaft 114, the bidirectional motor 111 is disposed at the top of the base 1, and the driving gear 112 is sleeved at an output shaft end of the bidirectional motor 111; one end of the transmission shaft 114 is correspondingly sleeved with a driven gear 113, and the first cam 001 and the second cam 002 are respectively meshed with the driving gear 112 through the transmission shaft 114; the transmission shaft 114 is sleeved with an anti-reverse device 5.

Two-way motors 111 are arranged between the adjacent first cams 001 and between the adjacent second cams 002, and output shafts on two sides of the two-way motor 11 respectively correspond to the wheel shafts of the first cams 001 or the second cams 002 on two sides. When the bidirectional motor 111 works, the driving gear 112 on two sides is synchronously driven to rotate, the driving gear 112 drives the driven gear 113 to rotate, and then the transmission shaft 114 is driven to rotate, finally, the first cam 001 or the second cam 002 is synchronously driven to rotate, and the anti-reverse device 5 sleeved on the transmission shaft 114 is used for preventing the transmission shaft from reversely rotating.

Other parts of this embodiment are the same as embodiment 1, and thus are not described again.

Example 3:

this embodiment is further optimized on the basis of the above embodiment 1 or 2, as shown in fig. 5 and 6, the anti-reverse device 5 includes a ratchet 51, a ratchet 52, a return spring 53, and a guiding telescopic column 54; the ratchet wheel 51 is sleeved on the transmission shaft 114, the fixed end of the guide telescopic column 54 is connected with the top of the base 1, the telescopic end of the guide telescopic column 54 is connected with one side of the ratchet card 52, and the other side of the ratchet card 52 is meshed with the ratchet wheel 51 through a ratchet; a return spring 53 is coaxially arranged on the outer side of the guiding telescopic column 54, one end of the return spring 53 is connected with the top of the base 1, and the other end of the return spring 53 is connected with one side of the ratchet 52.

The return spring 53 is always in a compressed state, that is, the return spring 53 always pushes the ratchet 52 against the ratchet 51, so that the ratchet of the ratchet 52 is tightly attached to the rim of the ratchet 51, and the guiding telescopic column 54 is used for guiding the extension and retraction of the return spring 53, thereby ensuring that the return spring 53 extends and retracts along the axial direction. When the transmission shaft 114 rotates, the ratchet wheel 51 rotates together with the transmission shaft 114, and the ratchet teeth on the ratchet card 52 are positively engaged with the ratchet wheel 51, i.e. when the transmission shaft 114 rotates positively, the ratchet card 52 does not limit the rotation of the ratchet wheel 51. When the transmission shaft 114 rotates reversely, the ratchet teeth on the ratchet catch 52 will restrict the rotation of the ratchet wheel 51 and block the ratchet wheel 51, i.e. it is ensured that the transmission shaft 114 can only rotate in the forward direction but not in the reverse direction.

The rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.

Example 4:

in this embodiment, a further optimization is performed on the basis of any one of the embodiments 1 to 3, as shown in fig. 7, the rotating device 33 includes a rotating base 331, an outer gear ring 332, a rotating gear 333, and a rotating motor 334, the rotating base 331 is rotatably installed through the top base 2, the top of the rotating base 331 is connected to the bottom of the projector body 4, a circular boss is disposed at the bottom of the rotating base 331, and the outer gear ring 332 is sleeved on the outer edge of the circular boss; the bottom of footstock 2 is provided with the installation cavity, install in the installation cavity and rotate motor 334, the output shaft end cover of rotating motor 334 is equipped with rotating gear 333, rotating gear 333 meshes with outer ring gear 332.

Swivel mount 331 runs through footstock 2 and rotates the installation, and the top of swivel mount 331 upwards extends to outside footstock 2 and is connected with the bottom of projector body 4, and the bottom downwardly extending of swivel mount 331 is outside the bottom of footstock 2, and the bottom of swivel mount 331 is provided with circular boss, and the cover is equipped with outer ring gear 332 on the outer fringe of circular boss. When the rotating motor 334 works, the rotating gear 333 is driven to rotate, the rotating gear 333 further drives the outer gear ring 332 to rotate, the rotating seat 331 and the projector body 4 on the top of the rotating seat 331 are driven to rotate, and the deflection inclination angle of the projector is adjusted.

Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.

Example 5:

this embodiment is further optimized on the basis of any one of the above embodiments 1 to 4, and four corners of the top of the base 1 are connected with four corners of the bottom of the top seat 2 through the telescopic vertical rods 3.

The vertical flexible pole setting 3 that sets up constitutes the outer frame between the four corners at the top of base 1 and the four corners of the bottom of footstock 2, makes overall structure more stable. When the rotating wheel diameter of the first cam 001 or the second cam 002 changes, the telescopic vertical rod 3 expands and contracts along with the change of the wheel diameter of the first cam 001 or the second cam 002.

In order to guarantee the stability of the telescopic vertical rod 3 during extension and retraction, a damping spring is coaxially sleeved outside the telescopic vertical rod 3, the top end of the damping spring is connected with the bottom of the top seat 2, the bottom end of the damping spring is connected with the top of the base 1, when the telescopic vertical rod 3 extends and retracts, the damping spring correspondingly extends and retracts, vibration is effectively absorbed, and the lifting of the top seat 2 is more stable.

Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.

Example 6:

the embodiment is further optimized on the basis of any one of the above embodiments 1 to 5, as shown in fig. 8, the telescopic vertical rod 3 includes a fixed rod 31 and a telescopic rod 32, one end of the fixed rod 31 is connected to the top of the base 1, one end of the telescopic rod 32 is slidably inserted into the fixed rod 31, and the other end of the telescopic rod 32 is connected to the bottom of the top base 2.

One end of the fixing rod 31 is closed, the other end of the fixing rod is open, a cavity is formed in the fixing rod 31, the closed end of the fixing rod 31 is connected with the top of the base 1, the telescopic rod 32 is slidably mounted in the cavity of the fixing rod 31, the telescopic rod 32 stretches along the cavity of the fixing rod 31, and the stretching end of the telescopic rod 32 is connected with the bottom of the top seat 2.

In order to avoid that the telescopic rod 32 is completely separated from the fixing rod 31 when the first cam 001 or the second cam 002 drives the footstock 2 to ascend and descend and further drives the telescopic rod 32 to stretch and retract, the sliding stroke of the telescopic rod 32 in the fixing rod 31 is set to be larger than the maximum wheel diameter change interval of the first cam 001 or the second cam 002.

Other parts of this embodiment are the same as any of embodiments 1 to 5, and thus are not described again.

Example 7:

this embodiment is further optimized based on any one of embodiments 1 to 6, and the diameters of the first cam 001 and the second cam 002 are linearly changed.

In order to ensure that the pitch inclination angle of the top seat 2 is linearly and continuously adjusted, rather than being adjusted in a step-wise manner at a specific height, the wheel diameters of the first cam 001 and the second cam 002 are set to change linearly, that is, the height difference between the two ends of the top seat 2 is ensured to change linearly in the difference interval between the wheel diameter of the first cam 001 and the wheel diameter of the second cam 002, so that the pitch inclination angle of the top seat 2 is continuously and linearly adjusted.

Other parts of this embodiment are the same as any of embodiments 1 to 6, and thus are not described again.

Example 8:

the present embodiment is further optimized based on any one of the above embodiments 1 to 7, and a wireless video receiving device is disposed in the projector body 4, and is configured to receive a teaching video of a thinking and political theory course and play the teaching video in real time through the projector body 4.

Still be provided with the stereo set in the projecting apparatus body 4, be provided with bluetooth audio frequency receiving device on the stereo set, can receive in real time through bluetooth audio frequency receiving device think the audio information of the important meeting that political affairs theory class relates to or important speech and broadcast in real time through the stereo set, the political affairs theory class video information synchronous broadcast that thinks that cooperation projecting apparatus body 4 received makes the sound and picture combine, lets think political affairs theory teaching more lively.

Other parts of this embodiment are the same as any of embodiments 1 to 7, and thus are not described again.

Example 9:

this embodiment is further optimized on the basis of any one of the above embodiments 1-8, be provided with wireless information receiving device in the projector body 4, wireless information receiving device passes through bluetooth or wifi and is connected with student's terminals such as cell-phone, computer, and the student is when receiving thinking political affairs theory class education, and the accessible cell-phone or computer send real-time information such as comment, feeling to wireless information receiving device in the projector body 4, and then projector body 4 is broadcast thinking political affairs theory class video and is simultaneously shown received real-time information with the form synchronous display of barrage, effectively promotes student's course participation sense.

Other parts of this embodiment are the same as any of embodiments 1 to 8, and thus are not described again.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (7)

1. A projector for thinking political affairs theory class comprises a base (1) and a top seat (2), and is characterized in that the base (1) is connected with the top seat (2) through a telescopic vertical rod (3), and a projector body (4) is rotatably installed at the top of the top seat (2); first rotating grooves (01) are symmetrically formed in two sides of the top of the base (1), second rotating grooves (02) are symmetrically formed in two sides of the bottom of the top base (2) corresponding to the first rotating grooves (01), a first cam (001) is rotatably arranged between one ends of the first rotating grooves (01) and one ends of the second rotating grooves (02) which are on the same side, and a second cam (002) is arranged between the other ends of the first rotating grooves and the second rotating grooves; a cam driving device (11) for driving the first cam (001) and the second cam (002) to rotate is arranged between the base (1) and the top seat (2), and an anti-reverse device (5) is respectively arranged on a wheel shaft of the first cam (001) and a wheel shaft of the second cam (002); the bottom of the top seat (2) is also provided with a rotating device (33) for driving the projector body (4) to rotate.

2. The projector for the thinking and political theory course according to claim 1, wherein the cam driving device (11) comprises a bidirectional motor (111), a driving gear (112), a driven gear (113) and a transmission shaft (114), the bidirectional motor (111) is arranged at the top of the base (1), and the driving gear (112) is sleeved at an output shaft end of the bidirectional motor (111); one end of the transmission shaft (114) is correspondingly sleeved with a driven gear (113), and the first cam (001) and the second cam (002) are respectively meshed with the driving gear (112) through the transmission shaft (114); the transmission shaft (114) is sleeved with an anti-reverse device (5).

3. A Si political lesson projector according to claim 2, characterized in that said anti-inversion device (5) comprises a ratchet (51), a ratchet (52), a return spring (53), a guiding telescopic column (54); the ratchet wheel (51) is sleeved on the transmission shaft (114), the fixed end of the guide telescopic column (54) is connected with the top of the base (1), the telescopic end of the guide telescopic column (54) is connected with one side of the ratchet card (52), and the other side of the ratchet card (52) is meshed with the ratchet wheel (51) through a ratchet; the outer side of the guide telescopic column (54) is coaxially provided with a return spring (53), one end of the return spring (53) is connected with the top of the base (1), and the other end of the return spring (53) is connected with one side of the ratchet (52).

4. The projector for the thinking and political affairs theory course of claim 1, wherein the rotating device (33) comprises a rotating seat (331), an outer gear ring (332), a rotating gear (333) and a rotating motor (334), the rotating seat (331) is rotatably installed through the top seat (2), the top of the rotating seat (331) is connected with the bottom of the projector body (4), the bottom of the rotating seat (331) is provided with a circular boss, and the outer gear ring (332) is sleeved on the outer edge of the circular boss; the bottom of footstock (2) is provided with the installation cavity, install in the installation cavity and rotate motor (334), the output shaft end cover of rotating motor (334) is equipped with rotating gear (333), rotating gear (333) and outer ring gear (332) meshing.

5. A Si political theory course projector according to any one of claims 1-4, characterized in that the telescopic vertical rod (3) comprises a fixed rod (31) and a telescopic rod (32), one end of the fixed rod (31) is connected with the top of the base (1), one end of the telescopic rod (32) is inserted in the fixed rod (31) in a sliding manner, and the other end of the telescopic rod (32) is connected with the bottom of the top seat (2).

6. A Si political theory class projector according to claim 5, characterized in that the four corners of the top of the base (1) and the four corners of the bottom of the top seat (2) are connected by telescopic vertical rods (3).

7. A think theory class projector according to claim 1, wherein the first cam (001) and the second cam (002) have a linear change in wheel diameter.

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