CN215488836U

CN215488836U - Projector for computer application technology teaching

Info

Publication number: CN215488836U
Application number: CN202120259455.0U
Authority: CN
Inventors: 袁玉霞; 王书伟; 张亚超
Original assignee: Zhengzhou University of Science and Technology
Current assignee: Zhengzhou University of Science and Technology
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-01-11
Anticipated expiration: 2031-01-29

Abstract

The utility model relates to a projector for teaching of computer application technology, which effectively solves the problems that the existing portable projector cannot adjust the height of the projector, the projector is not level and the inclination angle of the projector cannot be adjusted; the technical scheme includes that the projector comprises a base and a projector body arranged at the upper end of the base, vent holes are formed in the base, supporting legs are fixedly connected to four corners of the base and comprise a primary telescopic rod fixedly connected with the base, the lower end of the primary telescopic rod is coaxially and vertically slidably connected with a secondary telescopic rod, the lower end of the secondary telescopic rod is coaxially and vertically slidably connected with a bottom telescopic rod, the lower end of the bottom telescopic rod is in threaded connection with a foot sleeve, the lower end of the foot sleeve is fixedly connected with an umbrella-shaped support frame, and the lower end of the umbrella-shaped support frame is made of frosted materials; the structure is simple, and the practicability is strong.

Description

Projector for computer application technology teaching

Technical Field

The utility model relates to the technical field of projectors, in particular to a projector for computer application technology teaching.

Background

The projector is a device which can project images or videos onto a curtain, can be connected with a computer, a VCD, a DVD, a game machine, a DV and the like through different interfaces to play corresponding video signals, is widely applied to families, offices, schools and entertainment places, has the basic principle that the appearance and the outline of a workpiece are enlarged by using an optical element and then projected onto a screen, can be used for measuring the outline by using transmitted light, can also be used for measuring the surface shape of a non-through hole by using reflected light, and is also commonly used for measuring complex outlines and small workpieces besides viewing.

In the process of computer application technology teaching, the projector cannot be used, and in the teaching process, the projector is not used by each subject, so that a plurality of classrooms do not have projectors, and a teacher needs to carry the projector equipment.

The existing projector carried by a teacher has the following problems:

1. the projector is directly placed on the desk, the height of the projector cannot be adjusted according to actual needs, and meanwhile, the height of the supporting legs cannot be micro-adjusted, so that the projector is constantly in a stable and horizontal state;

2. in the process of projecting the screen, the projection angle of projecting apparatus can not be according to actual need right the inclination of projecting apparatus adjust to adapt to the needs of in-service use, simultaneously at the in-process of wiring, the electric wire confusion of projecting apparatus is not convenient for accomodate.

Therefore, the utility model provides a projector for computer application technology teaching to solve the problem.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a projector for teaching computer application technology, which effectively solves the problems that the height of the projector cannot be adjusted, the projector is not level and the inclination angle of the projector cannot be adjusted in the conventional portable projector.

The projector comprises a base and a projector body arranged at the upper end of the base, and is characterized in that vent holes are formed in the base, supporting legs are fixedly connected to four corners of the base, each supporting leg comprises a first-stage telescopic rod fixedly connected with the base, the lower end of the first-stage telescopic rod is coaxially and vertically connected with a second-stage telescopic rod in a sliding manner, the lower end of the second-stage telescopic rod is coaxially and vertically connected with a bottom telescopic rod in a sliding manner, the lower end of the bottom telescopic rod is in threaded connection with a foot sleeve, the lower end of the foot sleeve is fixedly connected with an umbrella-shaped support frame, and the lower end of the umbrella-shaped support frame is made of frosted materials;

the telescopic rod structure is characterized in that the lower end of the first-stage telescopic rod is connected with a limiting pin in a front-back sliding mode, the second-stage telescopic rod is provided with a sliding track matched with the limiting pin, the lower end of the sliding track is provided with a circular groove, and the first-stage telescopic rod and the second-stage telescopic rod are connected in an up-down sliding mode in the same mode as the up-down sliding mode of the second-stage telescopic rod and the bottom telescopic rod.

Preferably, the projecting apparatus body with the base rotate and connect, projecting apparatus body lower extreme rotate and be connected with the regulation connecting rod, the regulation connecting rod other end rotate and be connected with sliding sleeve, sliding sleeve with rotate and connect the base in regulation lead screw threaded connection, the coaxial fixedly connected with adjusting hand wheel of regulation lead screw right-hand member.

Preferably, the front side and the rear side of the rear end of the projector body are fixedly connected with sliding frames, guide tracks are formed in the sliding frames, wiring boards are connected in the guide tracks in a sliding mode, the front end and the rear end of each wiring board are fixedly connected with rotating shafts from top to bottom, one side, close to the projector body, of each wiring board is provided with a plurality of wire clamping grooves, and the wire clamping grooves are communicated with one another.

Preferably, the side all seted up the ventilation hole around the projecting apparatus body, the ventilation hole all be the downward sloping state.

Preferably, the left end of the projector body is fixedly connected with a projection lens, the left end of the projection lens is in threaded connection with a lens sleeve, and one side of the lens sleeve, which is close to the projection lens, is fixedly connected with a lens eraser.

The utility model is improved aiming at the existing projector, and the problem of adjusting the height and the levelness of the projector is effectively solved by arranging a first-stage telescopic rod, a second-stage telescopic rod, a bottom telescopic rod, a foot sleeve and an umbrella-shaped support frame; the problem of adjusting the inclination angle of the projector is solved by arranging the adjusting connecting rod, the sliding sleeve and the adjusting screw rod; the problem of disorder of the electric wires is effectively solved by arranging the sliding frame, the guide rail and the wiring board; and the structure is simple and stable, and the universality is extremely high.

Drawings

Fig. 1 is a perspective view of the present invention.

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

FIG. 3 is a perspective view of the support leg of the present invention.

FIG. 4 is a perspective view of the primary telescopic rod and the connecting member of the present invention.

Fig. 5 is a schematic view of the wiring board connection mechanism of the present invention.

Fig. 6 is a partial schematic view of the lens sleeve of the present invention.

Detailed Description

The foregoing and other aspects, features and advantages of the utility model will be apparent from the following more particular description of embodiments of the utility model, as illustrated in the accompanying drawings in which reference is made to figures 1 to 6. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

The utility model relates to a projector for teaching computer application technology, which comprises a base 1 and a projector body 2 arranged at the upper end of the base 1, wherein the base 1 provides a supporting base for the projector body 2, and is characterized in that a vent hole 3 is formed in the base 1, the vent hole 3 enables air at the lower end of the projector body 2 to flow and exchange, so as to play a role in heat dissipation of the projector body 2, supporting legs 4 are fixedly connected to four corners of the base 1, the base 1 is supported through the supporting legs 4, the height of the base 1 can be adjusted, the supporting legs 4 comprise a first-stage telescopic rod 5 fixedly connected with the base 1, a second-stage telescopic rod 6 is coaxially and vertically slidably connected to the lower end of the first-stage telescopic rod 5, and a bottom telescopic rod 7 is coaxially and vertically slidably connected to the lower end of the second-stage telescopic rod 6, the two-stage telescopic rod 6 and the bottom telescopic rod 7 are gradually unfolded and stretched to enable the supporting legs 4 to adjust the height of the base 1, the lower ends of the bottom telescopic rods 7 are in threaded connection with foot sleeves 8, the height of a single supporting leg 4 can be slightly adjusted by rotating the foot sleeves 8, the projector body 2 can be in a balanced state when being located on an uneven plane, the base 1 is enabled to be in a horizontal state, the lower ends of the foot sleeves 8 are fixedly connected with umbrella-shaped support frames 9, the lower ends of the umbrella-shaped support frames 9 are made of frosted materials, the contact range of the umbrella-shaped support frames 9 is enlarged, meanwhile, strong friction force is achieved, the stability of the base 1 is guaranteed, and sliding cannot occur;

the lower end of the first-stage telescopic rod 5 is connected with a limit pin 10 in a front-back sliding manner, the embodiment provides a front-back sliding connection mode, the first-stage telescopic rod 5 is provided with a sliding groove matched with the limit pin 10, the limit pin 10 is connected with the sliding groove through a spring, the second-stage telescopic rod 6 is provided with a sliding rail 11 matched with the limit pin 10, under the matching action of the limit pin 10 and the sliding rail 11, the second-stage telescopic rod 6 can only slide up and down along the first-stage telescopic rod 5, the lower end of the sliding rail 11 is provided with a circular groove 12, when the limit pin 10 slides to be matched with the circular groove 12, the limit pin 10 slides into the circular groove 12 under the action of the spring to fix the first-stage telescopic rod 5 and the second-stage telescopic rod 6, the up-down sliding connection mode of the primary telescopic rod 5 and the secondary telescopic rod 6 is the same as the up-down sliding connection mode of the secondary telescopic rod 6 and the bottom telescopic rod 7;

in the specific implementation of this embodiment, the supporting legs 4 in the initial state are in the contracted state, the base 1 is placed on the table top, the supporting legs 4 are extended according to the required height, so that the limiting pins 10 are matched with the circular grooves 12, then the base 1 is placed on the table top, and then the corresponding foot sleeves 8 are rotated according to the flatness of the table top to adjust the height of the single supporting leg 4, so that the base 1 is in the horizontal state;

after the use, press the spacer pin 10, make the spacer pin 10 with circular groove 12 break away from the cooperation, then promote second grade telescopic link 6 or bottom telescopic link 7, make supporting leg 4 shrink, be convenient for to the projecting apparatus accomodate.

In the second embodiment, on the basis of the first embodiment, in the using process of the projector, due to different using occasions, the inclination angle of the projector body 2 needs to be adjusted, so that the present embodiment provides an angle adjusting structure, specifically, the projector body 2 is rotatably connected with the base 1, the lower end of the projector body 2 is rotatably connected with an adjusting connecting rod 13, the other end of the adjusting connecting rod 13 is rotatably connected with a sliding sleeve 14, the sliding sleeve 14 is in threaded connection with an adjusting lead screw rotatably connected in the base 1, the right end of the adjusting lead screw 15 is coaxially and fixedly connected with an adjusting hand wheel 16, the adjusting hand wheel 16 is rotated to drive the adjusting lead screw 15 to synchronously rotate, the adjusting lead screw 15 rotates, and under the limiting effect of the adjusting connecting rod 13 and the base 1, the sliding sleeve 14 slides left and right, the sliding sleeve 14 slides left and right to drive the adjusting connecting rod 13 to rotate, so as to drive the projector body 2 to rotate around the base 1, and the inclination angle of the projector body 2 is adjusted.

In a third embodiment, on the basis of the first embodiment, in a process of using the projector, the wiring terminal of the projector is easily disordered and inconvenient to store, so that the present embodiment provides a structure for storing the electric wire, specifically, referring to fig. 5, front and rear sides of a rear end of the projector body 2 are fixedly connected with sliding frames 17, guide rails 18 are formed in the sliding frames 17, wiring boards 19 are slidably connected in the guide rails 18, front and rear ends of the wiring boards 19 are fixedly connected with rotating shafts 20 up and down, the rotating shafts 20 at upper ends are matched with the sliding frames 17, the rotating shafts 20 at lower ends are arranged in the guide rails 18, one side of the wiring boards 19 close to the projector body 2 is provided with a plurality of wire clamping grooves 21, and the plurality of wire clamping grooves 21 are communicated with each other, the winding and containing of the wires with the surplus length are achieved through the wire clamping groove 21, the containing of the wires is achieved, when the wires are required to be clamped, the wiring board 19 is pulled upwards, then the wiring board 19 is rotated towards the left end, the lower end of the wiring board 19 rotates in the guide rail 18, the wiring board 19 slides to the lowest end, then the rotating shaft 20 is attached to the lowest end of the guide rail 18, the wiring board 19 is in a horizontal state, then the surplus wires are wound in the wire clamping groove 21, after the wire arrangement is finished, the wiring board 19 is rotated, then the wiring board 19 slides upwards, and finally the rotating shaft 20 at the upper end is matched with the upper end of the sliding frame 17, and the limiting and fixing of the wiring board 19 are achieved.

Fourth embodiment, on the basis of second embodiment, at the in-process that uses the projecting apparatus, projecting apparatus body 2 can produce the heat, if the heat dissipation is untimely, the problem of projecting apparatus body 2 trouble can appear, so this embodiment provides a heat radiation structure, and is concrete, projecting apparatus body 2 around the side all seted up ventiduct 22, ventiduct 22 all be the downward sloping state, make external air can pass through ventiduct 22 get into projecting apparatus body 2 inside, take away the inside heat of projecting apparatus body 2, then ventiduct 22 be the slope state, avoided external dust or debris to get into along with the air current projecting apparatus body 2 inside.

Fifth embodiment, on the basis of the first embodiment, in the use of the projector, the lens needs to be specially protected, so as to avoid the occurrence of a faceting phenomenon on the lens and affecting the projection effect, and meanwhile, the lens needs to be wiped in time, so as to avoid dust on the lens, so that the present embodiment provides a structure for protecting and wiping the projection lens 23, specifically, the left end of the projector body 2 is fixedly connected with the projection lens 23, the left end of the projection lens 23 is in threaded connection with a lens sleeve 24, the projection lens 23 is protected by the lens sleeve 24 sleeved on the projection lens 23, so as to prevent the external object from wearing the projection lens 23, the lens sleeve 24 is fixedly connected with the lens wiper on the side close to the projection lens 23, in the process of rotating the lens sleeve 24 to protect the projection lens 23, the projection lens 23 is wiped by the lens wiper, so that the projection lens 23 is kept in a clean state, and the projection definition is ensured.

When the novel support leg is used specifically, the support legs 4 are in a contracted state in an initial state, the base 1 is placed on a table top, the support legs 4 are extended according to the required height, the limiting pins 10 are matched with the circular grooves 12, then the base 1 is placed on the table top, corresponding foot sleeves 8 are rotated according to the flatness of the table top, the height of each support leg 4 is adjusted, and the base 1 is in a horizontal state;

the adjusting hand wheel 16 is rotated to drive the adjusting screw rod 15 to rotate synchronously, the adjusting screw rod 15 rotates under the limiting effect of the adjusting connecting rod 13 and the base 1, the sliding sleeve 14 slides left and right, the adjusting connecting rod 13 is driven to rotate in the process of sliding the sliding sleeve 14 left and right, the projector body 2 is further driven to rotate around the base 1, and the inclination angle of the projector body 2 is adjusted;

when wire clamping is needed, the wiring board 19 is pulled upwards, then the wiring board 19 is rotated towards the left end, the lower end of the wiring board 19 rotates in the guide rail 18, the wiring board 19 slides to the lowest end, then the rotating shaft 20 is attached to the lowest end of the guide rail 18, the wiring board 19 is in a horizontal state, then redundant wires are wound in the wire clamping groove 21, after wire arrangement is finished, the wiring board 19 is rotated, then the wiring board 19 slides upwards, and finally the rotating shaft 20 at the upper end is matched with the upper end of the sliding frame 17, and the wiring board 19 is limited and fixed;

after the use, the adjustment hand wheel 16 is adjusted in the counter rotation, makes projecting apparatus body 2 be in the horizontality, presses the spacer pin 10 after that, makes spacer pin 10 and circular slot 12 break away from the cooperation, then promotes second grade telescopic link 6 or bottom telescopic link 7, makes supporting leg 4 shrink, is convenient for accomodate the projecting apparatus.

Claims

1. The projector for teaching the computer application technology comprises a base (1) and a projector body (2) arranged at the upper end of the base (1), and is characterized in that a ventilation hole (3) is formed in the base (1), supporting legs (4) are fixedly connected to four corners of the base (1), each supporting leg (4) comprises a first-stage telescopic rod (5) fixedly connected with the base (1), the lower end of the first-stage telescopic rod (5) is coaxially and vertically slidably connected with a second-stage telescopic rod (6), the lower end of the second-stage telescopic rod (6) is coaxially and vertically slidably connected with a bottom telescopic rod (7), the lower end of the bottom telescopic rod (7) is in threaded connection with a foot sleeve (8), the lower end of the foot sleeve (8) is fixedly connected with an umbrella-shaped support frame (9), and the lower end of the umbrella-shaped support frame (9) is made of frosted materials;

one-level telescopic link (5) lower extreme sliding connection have spacer pin (10) around, second grade telescopic link (6) seted up with spacer pin (10) matched with slip track (11), slip track (11) lower extreme seted up circular recess (12), one-level telescopic link (5) and second grade telescopic link (6) about sliding connection mode and second grade telescopic link (6) and bottom telescopic link (7) about sliding connection mode the same.

2. The projector for computer application technology teaching according to claim 1, wherein the projector body (2) is rotatably connected with the base (1), the lower end of the projector body (2) is rotatably connected with an adjusting connecting rod (13), the other end of the adjusting connecting rod (13) is rotatably connected with a sliding sleeve (14), the sliding sleeve (14) is in threaded connection with an adjusting lead screw (15) rotatably connected in the base (1), and the right end of the adjusting lead screw (15) is coaxially and fixedly connected with an adjusting hand wheel (16).

3. The projector for teaching computer application technology according to claim 1, wherein the front side and the rear side of the rear end of the projector body (2) are fixedly connected with sliding frames (17), the sliding frames (17) are internally provided with guide rails (18), the guide rails (18) are internally and slidably connected with wiring boards (19), the front end and the rear end of each wiring board (19) are vertically and fixedly connected with rotating shafts (20), one side of each wiring board (19) close to the projector body (2) is provided with a plurality of wire clamping grooves (21), and the plurality of wire clamping grooves (21) are communicated with each other.

4. The projector for teaching computer application technology according to claim 2, wherein air ducts (22) are formed in both front and rear side surfaces of the projector body (2), and the air ducts (22) are inclined downward.

5. The projector for computer application technology teaching according to claim 1, wherein a projection lens (23) is fixedly connected to the left end of the projector body (2), a lens sleeve (24) is connected to the left end of the projection lens (23) in a threaded manner, and a lens eraser (25) is fixedly connected to one side, close to the projection lens (23), of the lens sleeve (24).