CN210091404U - A multimedia teaching device used in Chinese teaching - Google Patents

Abstract

The utility model relates to the technical field of teaching devices, in particular to a multimedia teaching device used for Chinese teaching, which comprises an upper wall body, a supporting plate, a projector and a connecting rod, wherein the supporting plate is connected on the upper wall body in a lifting way, the connecting rod is vertically connected at the middle section of the lower plate surface of the supporting plate, the projector is arranged at the lower end of the connecting rod, two ends of the lower plate surface of the supporting plate are respectively provided with a fixed plate, a transverse positive and negative threaded rod is rotatably connected between the two fixed plates, the positive and negative threaded rod is driven by a motor, the positive and negative threaded rod is respectively in threaded connection with a left dust cover and a right dust cover, the positive and negative threaded rod can drive the left dust cover and the right dust cover to be closed to form a dust-proof cavity when; the projector solves the problems that the projector needs good heat dissipation when in use and needs dust prevention when not in use.

Description

A multimedia teaching device used in Chinese teaching

technical field

The utility model relates to the technical field of teaching devices, in particular to a multimedia teaching device used in Chinese teaching.

Background technique

With the continuous progress of science and technology, multimedia teaching has become more popular. Especially in the process of Chinese teaching, multimedia equipment is often used to facilitate vivid teaching, thereby improving the quality of teaching. In the process of multimedia teaching Projectors are generally used in China. During the placement of the projector, a large amount of dust will adhere to the surface of the projector, which will affect the heat dissipation of the projector, thereby affecting the service life of the projector. The traditional solution is to cover the projector jacket. The upper layer of protective layer can play a dustproof effect. Although the protective layer can play a role of dustproof, it is still not conducive to the heat dissipation of the projector. Therefore, a multimedia teaching device for Chinese teaching is needed to solve the problem of the projector. Dust and heat dissipation issues.

Utility model content

The purpose of the utility model is to provide a multimedia teaching device for Chinese teaching, so as to solve the problems that the projector needs good heat dissipation when in use and needs to be dustproof when not in use.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

A multimedia teaching device for Chinese teaching, comprising an upper wall, a support plate, a projector and a connecting rod, the support plate can be lifted and connected to the upper wall, and the connecting rod is vertically connected to the lower surface of the support plate the middle section, the projector is arranged at the lower end of the connecting rod;

Both ends of the lower surface of the support plate are provided with fixing plates, and a transverse positive and negative thread threaded rod is rotatably connected between the two fixed plates, and the positive and negative thread threaded rods are driven by a motor;

A left dust cover and a right dust cover are respectively threadedly connected to the positive and negative thread segments of the positive and negative threaded rods, and the positive and negative threaded rods can drive the left dust cover and the right dust cover to close when rotated. A dust-proof cavity is formed, and the projector is arranged in the dust-proof cavity when not working.

Preferably, a further technical solution is that the upper ends of the left dust cover and the right dust cover are provided with movable plates, and the two movable plates are respectively threadedly connected to the positive tooth segments of the positive and negative thread threaded rods. and anti-tooth segment.

Preferably, a further technical solution is that limit rods are arranged laterally between the two fixed plates, the limit rods are arranged in two and are located on both sides of the positive and negative threaded rods, and the movable plate is provided with a limit rod. There are threaded holes and limit holes, the threaded holes and the limit holes are matched with the positions of the positive and negative threaded rods and the limit rods, the positive and negative threaded rods are threadedly arranged in the threaded holes, and the limit The movable connection of the position rod is arranged in the limit hole.

A further technical solution is that the upper sides of the left dust cover and the right dust cover are provided with a bar-shaped gap that is transparent up and down, and the connecting rod penetrates into the left dust cover or the right dust cover from the bar-shaped gap. The cover is connected to the projector.

A further technical solution is that a receiving groove is provided on the side wall of the strip-shaped gap, a spring and a blocking plate are arranged in the receiving groove, one end of the spring is connected with the groove bottom of the receiving groove, and the other end is connected with the bottom of the receiving groove. One side of the blocking plate is connected, the two ends of the other side of the blocking plate are inclined toward the middle section, and the blocking plate blocks the strip-shaped gap.

A further technical solution is that when the blocking plate blocks the strip-shaped gap, a connecting channel is reserved on the inner side of the strip-shaped gap, and the connecting rod penetrates into the left dust cover or the right dust cover from the connecting channel. connected to the projector.

A further technical solution is that a top plate is connected to the lower plate surface of the upper wall, a telescopic rod is vertically arranged on the lower plate surface of the top plate, and the lower end of the telescopic rod is connected to the upper plate surface of the support plate. .

Compared with the prior art, the present invention has at least one of the following beneficial effects:

1. The support plate is movably connected to the upper wall to facilitate the adjustment of the position of the projector, which can not only adapt to different projection positions, but also facilitate the repair and maintenance of the projector;

2. The motor drives the positive and negative threaded rods to rotate, thereby driving the left dust cover and the right dust cover to move along the positive and negative threaded rods. When the positive and negative threaded rods rotate, they are located on the positive and negative tooth segments, respectively. The left dust cover and right dust cover can move in the opposite direction. When the projector needs to work, the rotation of the positive and negative threaded rods can drive the left dust cover and the right dust cover to move back, so that the left dust cover is dust-proof. The cover and the right dust cover no longer form a dust-proof cavity, which not only enables the projector to work normally, but also prevents the left and right dust covers from affecting the heat dissipation of the projector when the projector is working, and prevents the projector from working when the projector is not working. At the same time, the reverse rotation of the positive and negative threaded rods can drive the left dust cover and the right dust cover to move toward each other, thereby closing the left dust cover and the right dust cover and enclosing the projector in the dust-proof cavity. The projector has the effect of dustproof;

3. By setting the movable plate to connect the left dust cover and the positive and negative thread rods and connect the right dust cover and the positive and negative thread rods, the connection between the positive and negative thread rods and the left dust cover and the right dust cover is realized. Threaded connection.

4. Threaded holes are used to realize the threaded connection between the movable plate and the positive and negative threaded rods, and the cooperation between the limit rods and the limit holes can ensure that the movable plate moves horizontally along the positive and negative threaded rods;

5. Setting strip-shaped gaps on the upper sides of the left dust cover and the right dust cover can ensure that the connecting rod does not affect the horizontal movement of the left dust cover and the right dust cover;

6. The strip gap is blocked by the blocking plate, which can further play a dust-proof effect and prevent dust from falling into the dust-proof cavity from the strip gap when the projector is placed;

7. The blocking plate is connected by a spring, and the two outer ends of the blocking plate are inclined to the middle section, so that the top of the blocking plate can be moved to the top of the blocking plate under the action of the connecting rod during the movement of the left dust cover and the right dust cover. Recycle into the tank to prevent the blocking plate from affecting the movement of the left dust cover and the right dust cover;

8. The blocking plate reserves a connecting channel on the inner side of the strip gap, and the connecting channel is a reserved position for the connecting rod to ensure the normal placement of the connecting rod;

9. The top plate is connected to the upper wall, and a telescopic rod is set on the lower side of the top plate to connect the supporting plate, so as to realize the liftable connection between the supporting plate and the upper wall, and the height of the projector can be adjusted through the telescopic movement of the telescopic rod, which is convenient for use. Projection at different heights, and easy access and maintenance to the projector.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a schematic structural diagram of an embodiment of the left dust cover and the right dust cover in the utility model.

FIG. 3 is a schematic structural diagram of an embodiment of the left dust cover in the utility model.

4 is a schematic structural diagram of another embodiment of the left dust cover in the present invention.

5 is a cross-sectional view of an embodiment of the left dust cover or the right dust cover at the storage groove in the present invention.

6 is a cross-sectional view of another embodiment of the left dust cover or the right dust cover at the storage groove in the present invention.

FIG. 7 is a schematic structural diagram of a movable plate in the utility model.

In the figure: 1. Upper wall; 2. Top plate; 3. Supporting plate; 4. Fixed plate; 5. Positive and negative thread rod; 6. Movable plate; 7. Dust-proof cavity; 72. Right dust cover; 8. Projector; 9. Connecting rod; 10. Motor; 11. Limiting rod; 12. Bar gap; 13. Blocking plate; 14. Storage slot; 15. Spring; 16. Threaded hole; 17. Limit hole; 18. Telescopic rod; 19. Connection channel.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection , or detachable connection, or integral connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

1-7 show an embodiment of a multimedia teaching device used in Chinese teaching.

Referring to Figure 1, the present invention provides a multimedia teaching device for Chinese teaching, which may specifically include a support plate 3, a connecting rod 9, a projector 8, a fixing plate 4, a positive and negative thread rod 5, a motor 10, a left The dust cover 71 and the right dust cover 72, the support plate 3 can be lifted and connected to the upper wall 1 of the classroom, and the connecting rod 9 is fixedly connected to the lower surface of the support plate 3, and the connecting rod 9 is vertical Set to connect the support plate 3 and the projector 8, that is, the upper end of the connecting rod 9 is connected with the lower surface of the support plate 3, and the lower end of the connecting rod 9 is connected with the upper side of the projector 8; the fixing plate 4 is set to Two and are located at both ends of the lower plate surface of the support plate 3, and the two fixed plates 4 are arranged oppositely, and the two ends of the positive and negative thread rods 5 are respectively rotated and connected to the two fixed plates 4; The right and left dust cover 71 and the right dust cover 72 are respectively threadedly connected to the positive and negative tooth segments of the rod 5. When the positive and negative threaded rod 5 rotates, the left dust cover 71 and the right dust cover 72 can be driven along the line. The positive and negative threaded rod 5 moves to adjust the position of the left dust cover 71 and the right dust cover 72; when the projector 8 is placed, the left dust cover 71 and the right dust cover 72 are closed and connected, and the projector 8 Placed in the dustproof cavity 7 formed by the left dust cover 71 and the right dust cover 72, at this time, the projector 8 can be protected from dust; the motor 10 is arranged on the outside of any fixed plate 4, and the motor 10 The output shaft is connected with the positive and negative threaded rod 5, and the positive and negative threaded rod 5 can be driven to rotate through the work of the motor 10, and the motor 10 is a commercially available output shaft that can rotate forward and reverse.

Further, the movable plates 6 can be connected to the upper ends of the left dust cover 71 and the right dust cover 72, and the movable plates 6 are arranged in two and are respectively threadedly connected to the positive and negative segments of the positive and negative threaded rods 5. tooth segment, and then realize the threaded connection between the left dust cover 71 and the right dust cover 72 and the positive and negative threaded rod 5, and the rotation of the positive and negative threaded rod 5 can drive the two movable plates 6 to move in the opposite direction, and then The left dust cover 71 and the right dust cover 72 are driven to perform lateral movement in opposite directions along the positive and negative threaded rod 5 .

The rotation of the output shaft of the motor 10 can drive the positive and negative threaded rods 5 to rotate, which can drive the two movable plates 6 to move back or toward each other; when the projector 8 needs to be used for teaching, the motor 10 drives the two movable plates. 6. Backward movement, and then drive the left dust cover 71 and the right dust cover 72 to move back, and make the left dust cover 71 and the right dust cover 72 away from the projector 8. At this time, the projector 8 can not only be used for normal Moreover, the left dust cover 71 and the right dust cover 72 will not affect the normal heat dissipation of the projector 8, which can ensure the stable and fast heat dissipation of the projector 8, and prevent the projector 8 from affecting the service life due to the slow heat dissipation. After the end of use, the relative movement of two movable plates 6 can be driven by the reversal of the motor 10, thereby driving the relative movement of the left dust cover 71 and the right dust cover 72, and making the left dust cover 71 and the right dust cover. 72 is moved to a closed state, so that a closed dust-proof cavity 7 is formed between the left dust cover 71 and the right dust cover 72. At this time, the projector 8 can be set in the dust-proof cavity 7 to play a dust-proof effect. , to prevent the projector 8 from accumulating dust when the projector 8 is normally placed and affecting the heat dissipation of the projector 8 during operation.

Further, the two movable plates 6 can be specifically divided into a left movable plate and a right movable plate, the left movable plate is connected to the upper side of the left dust cover 71, and the left movable plate 71 is connected to the positive and negative tooth segments of the threaded rod 5. Threaded connection, the right movable plate is connected to the upper side of the right dust cover 72, and the right movable plate is threadedly connected with the reverse thread section of the positive and negative threaded rod 5, and the rotation of the positive and negative threaded rod 5 can drive the left dust cover. 71 and the right dust cover 72 move, so that the left dust cover 71 and the right dust cover 72 are moved to a closed state or a separated state. The left dust cover 71 and the right dust cover 72 can be of the same structure and arranged vertically and symmetrically along the central end of the positive and negative threaded rod 5. Specifically, the left dust cover 71 and the right dust cover 72 can be set as hollow cubes, One side is provided with an opening communicating with the inner cavity, and the openings of the left dust cover 71 and the right dust cover 72 are opposite to each other, so that the dust cavity 7 can be formed when moving to a closed state.

Referring to Figures 1 and 7, in order to ensure that the movable plate 6 moves laterally along the external thread column of the positive and negative threaded rod 5, a threaded hole 16 and a limit hole 17 can be provided on the movable plate 6, and the threaded hole 16 is threaded It is connected to the external thread column of the positive and negative threaded rod 5, and a limit rod 11 is also laterally arranged between the two fixed plates 4. The limit rod 11 passes through the limit hole 17, and the limit rod 11 and the limit rod 11. The matching of the position holes 17 can realize that the movable plate 6 can only slide laterally along the positive and negative thread rods 5 .

The limit rods 11 can be set to two and are symmetrically arranged on the upper and lower sides or the left and right sides of the positive and negative threaded rods 5. At this time, the limit holes 17 are also set to two, and are symmetrically arranged on the movable plate 6 on the threaded holes. The upper and lower sides or the left and right sides of the 16, thereby ensuring that the positions of the two limit holes 17 correspond to the positions of the two limit rods 11, and ensure that the positions of the threaded holes 16 correspond to the positions of the positive and negative threaded rods 5 .

The threaded holes 16 on the two movable plates 6 are respectively matched with the external threads on the two external positive and negative threaded rods.

Referring to Fig. 1 and Fig. 2, the upper side surfaces of the left dust cover 71 and the right dust cover 72 can be laterally provided with vertical and transparent bar-shaped gaps 12, and the bar-shaped gaps 12 are used for the normal placement of the connecting rod 9, When the left dust cover 71 and the right dust cover 72 move laterally, the position of the connecting rod 9 remains unchanged, and the strip notch 12 can move with the movement of the dust cover 7, thereby preventing the connecting rod 9 from affecting the left dust cover Lateral movement of the cover 71 and the right dust cover 72 .

The connecting rods 9 may be provided in two pieces and correspond to the left dust cover 71 and the right dust cover 72 .

Referring to Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a receiving groove 14 may be provided on the side wall of the strip-shaped notch 12, and a spring 15 and a blocking plate 13 are arranged in the receiving groove 14. One end is connected to the bottom of the receiving groove 14, and the other end is connected to the blocking plate 13; when the spring 15 is in a normal state, the blocking plate 13 will block the strip gap 12, and at this time the strip gap A connecting channel 19 is reserved at the inner end of the 12, and the connecting channel 19 is used for the placement of the position of the connecting rod 9; this setting can ensure that when the projector 8 is placed, the bar-shaped gap 12 can be blocked, which can reduce dust from the bar. The probability of the gap 12 falling into the dust-proof cavity 7 is more convenient for dust-proofing the projector 8; and the blocking plate 13 is connected by the spring 15, and the two outer ends of the blocking plate 13 are inclined to the middle section, so that the During the movement of the left dust cover 71 and the right dust cover 72, the blocking plate 13 is pushed back into the receiving groove 14 under the action of the connecting rod 11 to prevent the blocking plate 13 from affecting the left dust cover 71 and the right dust cover. Movement of the cover 72 .

Referring to Figure 1, the upper wall 1 can be provided with a top plate 2, and the top plate 2 can be fixed on the lower side of the upper wall 1 by bolting. The top plate 2 is vertically arranged with a transparent connecting hole, and the connecting hole and the expansion screw sleeve are aligned and then screwed into the bolt, so as to realize the stable connection between the top plate 2 and the upper wall 1; A telescopic rod 18 is arranged vertically on the lower side, the upper end of the telescopic rod 18 is connected to the lower side of the top plate 2, and the lower end is connected to the upper side of the support plate 3. At this time, the support plate 3 and the upper wall can be realized by the telescopic movement of the telescopic rod 18. The movable connection between the bodies 1 can adjust the height of the support plate 3 through the telescopic movement of the telescopic rod 18, and then adjust the height of the projector 8 to adapt to projections of different heights and facilitate the repair and maintenance of the projector 8.

The aforementioned telescopic rod 18 is an electric telescopic rod that can be purchased in the market, and the normal operation of the telescopic rod 18 can be ensured by supplying a power source.

Although the present invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that many other modifications and implementations can be devised by those skilled in the art that will fall within the scope of this application within the scope and spirit of the principles disclosed. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the present disclosure, drawings and claims. In addition to variations and modifications to the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (7)

1. The utility model provides a multimedia teaching device that chinese teaching was used, includes wall body (1), backup pad (3), projecting apparatus (8) and connecting rod (9), its characterized in that: the supporting plate (3) is connected to the upper wall body (1) in a lifting mode, the connecting rod (9) is vertically connected to the middle section of the lower plate surface of the supporting plate (3), and the projector (8) is arranged at the lower end of the connecting rod (9);

fixing plates (4) are arranged at two ends of the lower plate surface of the supporting plate (3), a transverse positive and negative tooth threaded rod (5) is rotatably connected between the two fixing plates (4), and the positive and negative tooth threaded rod (5) is driven by a motor (10);

positive tooth section and the anti-tooth section of positive and negative tooth threaded rod (5) have left dust cover (71) and right dust cover (72) respectively threaded connection, positive and negative tooth threaded rod (5) can drive left dust cover (71) and closed formation dustproof cavity (7) of right dust cover (72) when rotating, set up in dustproof cavity (7) when out of work projecting apparatus (8).

2. The multimedia teaching apparatus for chinese teaching of claim 1, wherein: the upper ends of the left dust cover (71) and the right dust cover (72) are respectively provided with a movable plate (6), and the two movable plates (6) are respectively in threaded connection with the orthodontic section and the counter-toothing section of the positive and negative-toothing threaded rod (5).

3. The multimedia teaching apparatus for chinese teaching as claimed in claim 2, wherein: two fixed plate (4) between transversely be equipped with gag lever post (11), gag lever post (11) set up to two and are located the both sides of positive and negative tooth threaded rod (5), be equipped with screw hole (16) and spacing hole (17) on fly leaf (6), screw hole (16) and spacing hole (17) and the position looks adaptation of positive and negative tooth threaded rod (5) and gag lever post (11), positive and negative tooth threaded rod (5) threaded connection sets up in screw hole (16), gag lever post (11) swing joint sets up in spacing hole (17).

4. The multimedia teaching apparatus for chinese teaching of claim 1, wherein: the upper sides of the left dust cover (71) and the right dust cover (72) are respectively provided with a strip-shaped notch (12) which is through up and down, and the connecting rod (9) penetrates into the left dust cover (71) or the right dust cover (72) from the strip-shaped notch (12) and is connected with the projector (8).

5. The multimedia teaching device for chinese teaching of claim 4, wherein: be equipped with on the lateral wall of bar breach (12) and accomodate groove (14), be equipped with spring (15) and shutoff board (13) in accomodating groove (14), the one end of spring (15) links to each other with the tank bottom of accomodating groove (14), and the other end links to each other with one side of shutoff board (13), the both ends of shutoff board (13) opposite side are to the middle section slope, just shutoff board (13) are with bar breach (12) shutoff.

6. The multimedia teaching apparatus for chinese teaching of claim 5, wherein: when the blocking plate (13) blocks the strip-shaped gap (12), a connecting channel (19) is reserved on the inner side of the strip-shaped gap (12), and the connecting rod (9) penetrates into the left dust cover (71) or the right dust cover (72) from the connecting channel (19) to be connected with the projector (8).

7. The multimedia teaching apparatus for chinese teaching of claim 1, wherein: the lower board surface of the upper wall body (1) is connected with a top board (2), the lower board surface of the top board (2) is vertically provided with an expansion link (18), and the lower end of the expansion link (18) is connected with the upper board surface of the support board (3).

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