CN215932870U

CN215932870U - Chinese teaching blackboard writing projecting apparatus

Info

Publication number: CN215932870U
Application number: CN202122204088.7U
Authority: CN
Inventors: 王琼
Original assignee: Lanzhou Modern Vocational College
Current assignee: Lanzhou Modern Vocational College
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-03-01
Anticipated expiration: 2031-09-13

Abstract

The utility model discloses a Chinese teaching blackboard-writing projector, which comprises a bottom plate, wherein the center of the top of the bottom plate is fixedly connected with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected with a frame body through a fixed block, the right side of the frame body is rotatably connected with a rotating rod through a bearing, the right side of the rotating rod is fixedly connected with a rotating handle, the rotating rod is driven to rotate by the rotating handle, the rotating rod drives the projector to rotate, the projection angle is adjusted, the movable block is driven to move rightwards by the spring, the pin rod is driven to move rightwards by the movable block, the connection part of the pin rod and the pin groove is inserted, carry out spacingly to the projecting apparatus, avoid the phenomenon that offset appears in the projecting apparatus, through setting up above structure, possessed the advantage of adjusting projection angle, solved current projecting apparatus and had not possessed the problem of adjusting projection angle to be favorable to using the projecting apparatus.

Description

Chinese teaching blackboard writing projecting apparatus

Technical Field

The utility model relates to the technical field of Chinese teaching, in particular to a Chinese teaching blackboard-writing projector.

Background

The language is a polysemous word, usually as the abbreviation of language characters, language literature, language culture, the language class is generally regarded as the comprehensive department of language and culture, the simple formula of language and article, language knowledge and cultural knowledge is commonly called it all can not be opened, also can say, the language is the written or oral language works and the sum of this formation process that use language law and specific language vocabulary to form, can use the projector in the course of the language teaching, and the existing projector mostly carries on the projection in the single angle, have the defect that does not possess and adjust the projection angle, thus is unfavorable to using the projector, for this reason we propose a language teaching blackboard-writing projector, solve the above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a Chinese teaching blackboard-writing projector which has the advantage of adjusting a projection angle and solves the problem that the existing projector does not adjust the projection angle.

In order to achieve the purpose, the utility model provides the following technical scheme: a blackboard-writing projector for Chinese teaching comprises a bottom plate, wherein an electric telescopic rod is fixedly connected at the center of the top of the bottom plate, the telescopic end of the electric telescopic rod is fixedly connected with a frame body through a fixed block, the right side of the frame body is rotatably connected with a rotating rod through a bearing, the right side of the rotating rod is fixedly connected with a rotating handle, the left side of the rotating rod extends to the inner cavity of the frame body and is rotatably connected with the joint of the inner cavity of the frame body through a bearing, the outer surface of the rotating rod is sleeved with a projector, the front position of the left side of the frame body is fixedly connected with a spring, one end of the spring, which is far away from the frame body, is fixedly connected with a moving block, the right side of the moving block is fixedly connected with a pin rod, the surface of pin pole and the internal surface sliding connection of spring, the left side of projecting apparatus and the position that cooperatees with the pin pole and use has evenly seted up the cotter way, the right side of pin pole extends to the inner chamber of framework and pegs graft with the junction of cotter way.

Preferably, the outer surface of the rotating handle is provided with anti-skid grains, and the moving range of the projector is larger than the height of the inner cavity of the frame body.

Preferably, a through hole is formed in the left side of the frame body and at a position matched with the pin rod for use, and the outer surface of the pin rod is in sliding connection with the inner surface of the through hole.

Preferably, four corners of the bottom plate are movably connected with moving wheels, and the surfaces of the moving wheels are designed as rubber cushions.

Preferably, the top and the bottom of the inner cavity of the frame body are respectively bonded with a cushion pad at the front position, and the thickness of the cushion pad is five millimeters.

Preferably, the number of the pin grooves is several, and the pin grooves are designed in a semi-arc arrangement mode.

Compared with the prior art, the utility model has the following beneficial effects:

according to the projector, the rotating handle is arranged to drive the rotating rod to rotate, the rotating rod drives the projector to rotate, the projection angle is adjusted, the spring is arranged to drive the moving block to move rightwards, the moving block drives the pin rod to move rightwards, the pin rod is connected with the pin groove in an inserting mode, the projector is limited, and the projector is prevented from being shifted in position.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top cross-sectional view of the frame construction of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2 at a;

fig. 4 is a left side perspective view of the frame structure of the present invention.

In the figure: 1. a base plate; 2. an electric telescopic rod; 3. a frame body; 4. a rotating rod; 5. a handle is rotated; 6. a projector; 7. a spring; 8. a moving block; 9. a pin rod; 10. a through hole; 11. a pin slot; 12. a moving wheel; 13. a cushion pad.

Detailed Description

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

Examples

Referring to fig. 1-4, a Chinese teaching blackboard-writing projector comprises a bottom plate 1, an electric telescopic rod 2 is fixedly connected at the center of the top of the bottom plate 1, a frame 3 is fixedly connected at the telescopic end of the electric telescopic rod 2 through a fixed block, a rotating rod 4 is rotatably connected at the right side of the frame 3 through a bearing, a rotating handle 5 is fixedly connected at the right side of the rotating rod 4, the left side of the rotating rod 4 extends to the inner cavity of the frame 3 and is rotatably connected with the joint of the inner cavity of the frame 3 through a bearing, a projector 6 is sleeved on the outer surface of the rotating rod 4, a spring 7 is fixedly connected at the front position of the left side of the frame 3, a moving block 8 is fixedly connected at one end of the spring 7 far away from the frame 3, a pin rod 9 is fixedly connected at the right side of the moving block 8, the outer surface of the pin rod 9 is slidably connected with the inner surface of the spring 7, pin grooves 11 are uniformly formed at the left side of the projector 6 and the position matched with the pin rod 9 for use, the right side of pin rod 9 extends to the inner chamber of framework 3 and pegs graft with the junction of cotter way 11, through setting up 5 drive bull stick 4 rotations of turning round bar, bull stick 4 drives 6 rotations of projecting apparatus, adjust the projection angle, move the movable block 8 right removal through setting up spring 7 drive, the movable block 8 drives pin rod 9 and moves right, make pin rod 9 peg graft with the junction of cotter way 11, it is spacing to carry out projecting apparatus 6, avoid projecting apparatus 6 the phenomenon of offset to appear.

Referring to fig. 1, the outer surface of the rotating handle 5 is provided with anti-slip lines, the moving range of the projector 6 is larger than the height of the inner cavity of the frame 3, and the anti-slip lines are arranged to avoid the phenomenon of hand slip.

Referring to fig. 3, a through hole 10 is formed in the left side of the frame 3 and at a position matched with the pin rod 9 for use, the outer surface of the pin rod 9 is slidably connected with the inner surface of the through hole 10, and the through hole 10 is formed to facilitate guiding the pin rod 9 and prevent the pin rod 9 from shaking.

Referring to fig. 1, four corners of the bottom of a bottom plate 1 are movably connected with moving wheels 12, the surfaces of the moving wheels 12 are designed as rubber cushions, and the moving wheels 12 are arranged to facilitate moving the device.

Referring to fig. 1, cushions 13 are bonded to the top and bottom of the inner cavity of the frame 3 near the front, the thickness of the cushions 13 is five millimeters, the arrangement of the cushions 13 facilitates the protection of the projector 6 and prevents the projector 6 from being damaged, the cushions 13 are made of rubber, and the rubber is a high-elasticity polymer material with reversible deformation, is rich in elasticity at room temperature, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed.

Referring to fig. 3 and 4, the number of the pin grooves 11 is several, the pin grooves 11 are designed in a semi-arc arrangement, and the accuracy of the projection angle is improved by the arrangement of the pin grooves 11.

When the projector is used, the projector is moved to an area needing to be used through the moving wheel 12, the electric telescopic rod 2 is started through the external controller, the electric telescopic rod 2 drives the frame body 3 to move upwards, the height is adjusted, at the moment, the moving block 8 drives the pin rod 9 to move leftwards, the spring 7 is stretched, the pin rod 9 is far away from the pin groove 11, at the moment, the rotating handle 5 is rotated, the rotating handle 5 drives the rotating rod 4 to rotate, the rotating rod 4 drives the projector 6 to rotate, the projection angle is adjusted, when the projection angle is adjusted to a proper angle, the moving block 8 drives the pin rod 9 to move rightwards through the reaction force of the spring 7, the pin rod 9 is inserted into the connection part of the pin groove 11, the projector 6 is limited, the phenomenon of position deviation of the projector 6 is avoided, through the arrangement of the structure, the advantage of adjusting the projection angle is achieved, and the problem that the projection angle cannot be adjusted in the existing projector is solved, thereby facilitating the use of the projector.

The control mode of the present application is controlled by an external controller, and the control circuit of the controller can be realized by simple circuit connection of those skilled in the art, which belongs to the common knowledge in the art, and the present application mainly protects the mechanical device, so the control mode and the circuit connection are not explained in detail in the present application.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a chinese teaching blackboard writing projecting apparatus, includes bottom plate (1), its characterized in that: an electric telescopic rod (2) is fixedly connected at the center of the top of the bottom plate (1), the telescopic end of the electric telescopic rod (2) is fixedly connected with a frame body (3) through a fixed block, the right side of the frame body (3) is rotatably connected with a rotating rod (4) through a bearing, the right side of the rotating rod (4) is fixedly connected with a rotating handle (5), the left side of the rotating rod (4) extends to the inner cavity of the frame body (3) and is rotatably connected with the joint of the inner cavity of the frame body (3) through a bearing, a projector (6) is sleeved on the outer surface of the rotating rod (4), a spring (7) is fixedly connected at the front position of the left side of the frame body (3), a moving block (8) is fixedly connected at one end of the spring (7) far away from the frame body (3), a pin rod (9) is fixedly connected at the right side of the moving block (8), and the outer surface of the pin rod (9) is slidably connected with the inner surface of the spring (7), pin groove (11) have evenly been seted up to the left side of projecting apparatus (6) and the position that cooperatees and use with pin pole (9), the right side of pin pole (9) extends to the inner chamber of framework (3) and pegs graft with the junction of pin groove (11).

2. A language teaching blackboard-writing projector according to claim 1, wherein: the outer surface of the rotating handle (5) is provided with anti-skid lines, and the moving range of the projector (6) is larger than the height of the inner cavity of the frame body (3).

3. A language teaching blackboard-writing projector according to claim 1, wherein: through-hole (10) have been seted up to the left side of framework (3) and the position that cooperatees and use with pin rod (9), the surface of pin rod (9) and the internal surface sliding connection of through-hole (10).

4. A language teaching blackboard-writing projector according to claim 1, wherein: four corners of the bottom plate (1) are movably connected with moving wheels (12), and the surfaces of the moving wheels (12) are designed as rubber cushions.

5. A language teaching blackboard-writing projector according to claim 1, wherein: the top and the front position of the bottom of the inner cavity of the frame body (3) are both bonded with cushion pads (13), and the thickness of the cushion pads (13) is five millimeters.

6. A language teaching blackboard-writing projector according to claim 1, wherein: the number of the pin grooves (11) is a plurality, and the pin grooves (11) are arranged in a semi-arc shape.