CN116548758A

CN116548758A - Retractable teaching board for teaching

Info

Publication number: CN116548758A
Application number: CN202310750754.8A
Authority: CN
Inventors: 王艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-08-08

Abstract

The invention discloses a retractable teaching board for teaching, which relates to the technical field of teaching boards and comprises foot frames, wherein the foot frames are provided with two symmetrical left and right, the bottom ends of the foot frames are fixedly connected with two groups of universal wheels which are symmetrical left and right, one foot frame is internally and movably connected with a lifting mechanism, the opposite sides of the lifting mechanism are fixedly connected with telescopic rods, the top ends of the lifting mechanism are fixedly connected with sliding mechanisms, after the device is dragged to a designated position, a motor can be controlled to rotate, the motor can drive a bevel gear I to rotate when rotating, so that a screw at the bottom end is driven to rotate, the screw can continuously rise under the action of threads, and then a lifting rod at the top end is driven to rise, and meanwhile, the telescopic rods can drive a lifting rod at the other side to synchronously rise, so that the rising stability of the device is improved, and meanwhile, the heights of a first blackboard and a second blackboard can be controlled according to the difference of the heights of teachers, so that a teacher can write conveniently.

Description

Retractable teaching board for teaching

Technical Field

The invention relates to the technical field of teaching boards, in particular to a retractable teaching board for teaching.

Background

The teaching board, i.e. the device used for writing and demonstrating in education industry, is usually a board surface placed in a classroom or a meeting room, and the teaching board is used for writing contents by chalk or an aqueous pen, so as to play a role in explaining and demonstrating.

Traditional teaching board is an holistic teaching board generally to can appear the condition that teaching board is insufficient when the teacher explain, thereby lead to the teacher comparatively inconvenient in the use, simultaneously, current teaching board can't height-adjusting, and the position on blackboard top can't be used to shorter teacher of some heights causes the waste of large tracts of land. Therefore, we provide a retractable teaching board for teaching to solve the above problems.

Disclosure of Invention

The invention aims to make up the defects of the prior art and provides a retractable teaching board for teaching. In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a teaching board of retractable for teaching, includes the foot rest, the foot rest is provided with bilateral symmetry's two, the bottom fixedly connected with two sets of bilateral symmetry's of foot rest universal wheel, one of them the inside swing joint of foot rest has elevating system, and elevating system's opposite side fixedly connected with telescopic link, elevating system's top fixedly connected with slide mechanism, slide mechanism's top fixedly connected with blackboard one, and the inside swing joint of blackboard one has extending mechanism, and extending mechanism's one end fixedly connected with blackboard two, the bottom fixedly connected with rack of blackboard one, one side fixedly connected with control of blackboard one.

Above-mentioned, elevating system includes motor, bevel gear one, bevel gear two, screw rod and lifting rod, the output of motor runs through the inside of lifting rod and extends to the outside of lifting rod, bevel gear one fixed connection is in the output of motor, bevel gear two meshes with bevel gear one, the top fixed connection of screw rod is in the bottom of bevel gear two, the bottom of bevel gear two rotates the inside bottom of connecting in the lifting rod.

Above-mentioned, the bottom of screw rod extends to the inside of foot rest and with the inside top threaded connection of foot rest, the outer wall fixedly connected with support frame of lift rod, and the stiff end fixed connection of motor is in the top of support frame, motor and controller electric connection.

The top end of the lifting rod is fixedly connected to the bottom end of the sliding mechanism, and the first bevel gear is located above the second bevel gear.

Above-mentioned, extending mechanism includes cylinder, pinion rack one, folding pole, fixed plate and gear, the fixed plate is provided with bilateral symmetry's two, one of them the outer wall fixedly connected with push pedal of fixed plate, the output fixed connection of cylinder is in the bottom of push pedal, pinion rack one is provided with bilateral symmetry's two sets of, and one end of pinion rack one is fixed connection in the both sides of fixed plate respectively, the folding pole is provided with bilateral symmetry's two, and the gear passes through bearing fixed connection in the both ends of folding pole respectively.

Above-mentioned, the fixed plate setting is parallelogram, the gear meshes with pinion rack one, the extension of push pedal is to the outside of blackboard one, cylinder fixed connection is in the outer wall of blackboard one, and wherein one side fixed connection of another fixed plate is in the inner wall of blackboard two, one of them fixed plate swing joint is in the inside of blackboard one.

Above-mentioned, slide mechanism includes fixed shell, slider, cam, release lever, pulley and fixed axle, slider sliding connection is in the inside of fixed shell, the bottom fixed connection of release lever is in the top of slider, fixed axle fixed connection is in one side of keeping away from the release lever, the cam rotates the middle section of connecting in the fixed axle, the bottom of fixed axle extends to the outside of fixed shell, one side fixed connection of pulley is in the one end of release lever, the one end swing joint of cam is in the top of fixed shell.

Above-mentioned, top one side fixedly connected with two pinion racks two of fixed shell, a plurality of tooth's sockets have been seted up to the outer wall of cam, and tooth's socket and pinion rack mesh mutually, the top fixedly connected with of fixed shell is in the bottom of blackboard one, the top fixedly connected with of fixed axle is in the bottom of blackboard two.

The beneficial effects are that:

compared with the prior art, the retractable teaching board for teaching has the following beneficial effects:

1. according to the invention, after the device is dragged to a designated position through the lifting mechanism, the motor can be controlled to rotate, the first bevel gear is driven to rotate when the motor rotates, and then the second bevel gear is driven to rotate by the bevel gear, so that the screw rod at the bottom end is driven to rotate, the screw rod continuously rises under the action of the screw thread, the lifting rod at the top end is driven to rise, and meanwhile, the lifting rod at the other side is driven to synchronously rise by the telescopic rod, so that the rising stability of the device is improved, and meanwhile, the heights of the first blackboard and the second blackboard can be controlled according to the difference of the heights of teachers, so that the writing of teachers is more convenient.

2. According to the invention, through the extension mechanism, when the first blackboard is fully filled with the content, the cylinder can be controlled to stretch, one of the fixed plates can be driven to move when the cylinder stretches, and meanwhile, the toothed plate I can also move, so that the gear is driven to rotate, and the folding rod is driven to fold or extend when the gear rotates, so that the second blackboard is pushed out of the first blackboard or retracted into the first blackboard, the occupied space of the device when the device is not used is reduced, the device is more convenient for people to store the device, and meanwhile, the operation of shrinkage and extension is more convenient for people to operate.

2. According to the invention, through the sliding mechanism, when the second blackboard is pushed out, the sliding block at the bottom end is driven to slide, when the sliding block moves rightwards, the tooth slot arranged on the cam drives the cam to rotate inwards under the action of the toothed plate II, the reset rod and the pulley are tightly attached to the outer wall of the cam when the cam rotates, and the cam is clamped on the inner wall of the fixed shell after the cam rotates, so that the second blackboard is limited, when the sliding block moves leftwards, the toothed plate II at the left side resets the cam, the protruding part of the cam faces outwards again, and the limit on the fixed shell is relieved.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

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

FIG. 2 is a schematic view of the structure of the extension mechanism of the present invention;

FIG. 3 is a schematic view of a sliding mechanism according to the present invention;

FIG. 4 is a schematic view of a lifting mechanism according to the present invention

FIG. 5 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;

fig. 6 is an enlarged schematic view of the structure of fig. 4B according to the present invention.

In the figure: 1. a foot rest; 2. a universal wheel; 3. a lifting mechanism; 301. a motor; 302. bevel gears I; 303. bevel gears II; 304. a screw; 305. a lifting rod; 4. a telescopic rod; 5. a sliding mechanism; 501. a fixed case; 502. a slide block; 503. a cam; 504. a reset lever; 505. a pulley; 506. a fixed shaft; 6. a first blackboard; 7. an extension mechanism; 701. a cylinder; 702. a toothed plate I; 703. a folding bar; 704. a fixing plate; 705. a gear; 8. a second blackboard; 9. a placing rack; 10. a controller; 11. a support frame; 12. and a toothed plate II.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1-4, the present invention provides a technical solution: the utility model provides a retractable teaching board for teaching, including foot rest 1, foot rest 1 is provided with bilateral symmetry's two, foot rest 1's bottom fixedly connected with two sets of bilateral symmetry's universal wheel 2, one of them foot rest 1's inside swing joint has elevating system 3, and elevating system 3's opposite side fixedly connected with telescopic link 4, elevating system 3's top fixedly connected with slide mechanism 5, slide mechanism 5's top fixedly connected with blackboard one 6, and blackboard one 6's inside swing joint has extending mechanism 7, and extending mechanism 7's one end fixedly connected with blackboard two 8, blackboard one 6's bottom fixedly connected with rack 9, one side fixedly connected with controller 10 of blackboard one 6.

When in use, after the device is dragged to a designated position, the motor 301 can be controlled to rotate, the motor 301 can drive the bevel gear I302 to rotate, then the bevel gear I302 drives the bevel gear II 303 to rotate, thereby driving the screw 304 at the bottom to rotate, the screw 304 can continuously ascend under the action of the screw thread, thereby driving the lifting rod 305 at the top to ascend, and simultaneously the telescopic rod 4 can drive the lifting rod 305 at the other side to synchronously ascend, thereby improving the ascending stability of the device, simultaneously controlling the heights of the blackboard I6 and the blackboard II 8 according to the height of a teacher, thereby being more convenient for a teacher to write, when the blackboard I6 is fully written, the cylinder 701 can be controlled to stretch and retract, when the cylinder 701 stretches and contracts, one of the fixed plates 704 can be driven, and meanwhile, the toothed plate I702 can also move, thereby driving the gear 705 to rotate, the gear 705 drives the folding rod 703 to fold or extend when rotating, thereby pushing the second blackboard 8 out of the first blackboard 6 or retracting the second blackboard 8 into the first blackboard 6, thereby reducing the occupied space of the device when not in use, being more convenient for people to store the second blackboard, reducing the operation difficulty of people by the operation of shrinkage and extension, when pushing the second blackboard 8 out, driving the slider 502 at the bottom to slide, when the slider 502 moves rightwards, the tooth slot arranged on the cam 503 drives the cam 503 to rotate inwards under the action of the toothed plate second 12, the reset rod 504 and the pulley 505 cling to the outer wall of the cam 503 when rotating, the cam 503 is clamped on the inner wall of the fixed shell 501 after rotating, thereby limiting the second blackboard 8, when the slider 502 moves leftwards, the toothed plate second 12 at the left side resets the cam 503, the protrusion of the device faces outwards again, the limit to the fixing shell 501 is relieved, the stability of the blackboard second 8 after being pushed out can be effectively improved, the situation that the blackboard second 8 is frequently contracted due to the action of external force is prevented, and inconvenience brought to teachers is reduced.

As shown in fig. 4 and 6, the lifting mechanism 3 includes a motor 301, a first bevel gear 302, a second bevel gear 303, a screw 304 and a lifting rod 305, wherein an output end of the motor 301 penetrates through an inside of the lifting rod 305 and extends to an outside of the lifting rod 305, the first bevel gear 302 is fixedly connected to an output end of the motor 301, the second bevel gear 303 is meshed with the first bevel gear 302, a top end of the screw 304 is fixedly connected to a bottom end of the second bevel gear 303, a bottom end of the second bevel gear 303 is rotatably connected to an inside bottom end of the lifting rod 305, a bottom end of the screw 304 extends to an inside of the foot rest 1 and is in threaded connection with an inside top end of the foot rest 1, a supporting frame 11 is fixedly connected to an outer wall of the lifting rod 305, a fixed end of the motor 301 is fixedly connected to a top end of the supporting frame 11, the motor 301 is electrically connected to the controller 10, a top end of the lifting rod 305 is fixedly connected to a bottom end of the sliding mechanism 5, and the first bevel gear 302 is located above the second bevel gear 303.

After dragging the device to the assigned position, the motor 301 can be controlled to rotate, the first bevel gear 302 can be driven to rotate when the motor 301 rotates, the second bevel gear 303 is driven to rotate by the first bevel gear 302, the screw 304 at the bottom is driven to rotate, the screw 304 continuously rises under the action of threads, the lifting rod 305 at the top is driven to rise, meanwhile, the telescopic rod 4 can drive the lifting rod 305 at the other side to synchronously rise, the rising stability of the device is improved, meanwhile, the heights of the first blackboard 6 and the second blackboard 8 can be controlled according to the difference of the heights of teachers, and a teacher can write more conveniently.

As shown in fig. 2, the extension mechanism 7 includes an air cylinder 701, a toothed plate one 702, a folding rod 703, a fixed plate 704 and a gear 705, the fixed plate 704 is provided with two symmetrical plates, an outer wall of one fixed plate 704 is fixedly connected with a pushing plate, an output end of the air cylinder 701 is fixedly connected with a bottom end of the pushing plate, the toothed plate one 702 is provided with two symmetrical groups, one end of the toothed plate one 702 is respectively fixedly connected with two sides of the fixed plate 704, the folding rod 703 is provided with two symmetrical plates, the gear 705 is respectively fixedly connected with two ends of the folding rod 703 through bearings, the fixed plate 704 is provided with a parallelogram shape, the gear 705 is meshed with the toothed plate one 702, the pushing plate extends to the outside of the first blackboard 6, the air cylinder 701 is fixedly connected with the outer wall of the first blackboard 6, one side of the other fixed plate 704 is fixedly connected with the inner wall of the second blackboard 8, and one fixed plate 704 is movably connected with the inside of the first blackboard 6.

When the first 6 of blackboard is full, steerable cylinder 701 stretches out and draws back, can drive one of them fixed plate 704 when cylinder 701 stretches out and draws back and remove, pinion rack one 702 also can remove simultaneously to drive gear 705 and rotate, drive folding pole 703 fold or extend when gear 705 rotates, thereby release blackboard two 8 in the inside of blackboard one 6 or withdraw blackboard two 8 in the inside of blackboard one 6, thereby reduce the occupation space of device when not using, more make things convenient for personnel to accomodate it, shrink simultaneously with the operation of extension reduce personnel's operation degree of difficulty more.

As shown in fig. 3 and 5, the sliding mechanism 5 includes a fixed housing 501, a slider 502, a cam 503, a reset lever 504, a pulley 505 and a fixed shaft 506, wherein the slider 502 is slidably connected inside the fixed housing 501, the bottom end of the reset lever 504 is fixedly connected to the top end of the slider 502, the fixed shaft 506 is fixedly connected to one side far away from the reset lever 504, the cam 503 is rotatably connected to the middle section of the fixed shaft 506, the bottom end of the fixed shaft 506 extends to the outside of the fixed housing 501, one side of the pulley 505 is fixedly connected to one end of the reset lever 504, one end of the cam 503 is movably connected to the top end of the fixed housing 501, two toothed plates 12 are fixedly connected to one side of the top end of the fixed housing 501, a plurality of tooth grooves are formed in the outer wall of the cam 503, the tooth grooves are meshed with the toothed plates 12, the top end of the fixed housing 501 is fixedly connected to the bottom end of the first blackboard 6, and the top end of the fixed shaft 506 is fixedly connected to the bottom end of the second blackboard 8.

When the second blackboard 8 is pushed out, the sliding block 502 at the bottom end is driven to slide, when the sliding block 502 moves to the right, the tooth slot arranged on the cam 503 can drive the cam 503 to rotate inwards under the action of the second toothed plate 12, the reset rod 504 and the pulley 505 can be tightly attached to the outer wall of the cam 503 when rotating, the cam 503 can be clamped on the inner wall of the fixed shell 501 after rotating, so that the second blackboard 8 is limited, when the sliding block 502 moves to the left, the second toothed plate 12 at the left can reset the cam 503, the protruding part of the second toothed plate is enabled to face to the outer side again, and the limit of the fixed shell 501 is relieved.

Working principle: after the device is dragged to a designated position, the motor 301 can be controlled to rotate, the motor 301 drives the bevel gear one 302 to rotate, then the bevel gear one 302 drives the bevel gear two 303 to rotate, so as to drive the screw rod 304 at the bottom to rotate, the screw rod 304 continuously rises under the action of threads, so as to drive the lifting rod 305 at the top to rise, meanwhile, the telescopic rod 4 drives the lifting rod 305 at the other side to synchronously rise, when the content on the blackboard one 6 is fully written, the cylinder 701 can be controlled to stretch, when the cylinder 701 stretches, one of the fixed plates 704 is driven to move, meanwhile, the toothed plate one 702 also moves, so as to drive the gear 705 to rotate, when the gear 705 rotates, the folding rod 703 is driven to fold or extend, thereby push out blackboard 8 inside of blackboard one 6 or draw back blackboard 8 inside of blackboard one 6, when blackboard two 8 was pushed out, can drive the slider 502 of bottom and slide, when slider 502 moved to the right, the tooth's socket that sets up on the cam 503 can drive cam 503 and inwards carry out the rotation under the effect of pinion rack two 12, reset rod 504 and pulley 505 can hug closely the outer wall of cam 503 when rotatory, can block the inner wall at fixed shell 501 after the cam 503 is rotatory, thereby carry out spacingly to blackboard two 8, when slider 502 moves to the left, left pinion rack two 12 can reset cam 503, make its protruding department outwards again, release the spacingly to fixed shell 501.

It should be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "fixedly attached," "mounted," "connected," and "coupled" are to be construed broadly, e.g., as a fixed connection, as a removable connection, or as an integral connection; "coupled" may be either mechanical or electrical; the "connection" may be direct, indirect via an intermediary, or communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

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

Claims

1. The utility model provides a teaching is with retractable teaching board, includes foot rest (1), its characterized in that: the foot rest (1) is provided with two bilaterally symmetrical universal wheels (2), the bottom end of the foot rest (1) is fixedly connected with two groups of bilaterally symmetrical universal wheels (2), one of the foot rest (1) is movably connected with a lifting mechanism (3), the opposite side of the lifting mechanism (3) is fixedly connected with a telescopic rod (4), the top end of the lifting mechanism (3) is fixedly connected with a sliding mechanism (5), the novel blackboard is characterized in that the top end of the sliding mechanism (5) is fixedly connected with a first blackboard (6), the inside of the first blackboard (6) is movably connected with an extension mechanism (7), one end of the extension mechanism (7) is fixedly connected with a second blackboard (8), the bottom end of the first blackboard (6) is fixedly connected with a placing frame (9), and one side of the first blackboard (6) is fixedly connected with a controller (10).

2. The retractable teaching board for teaching of claim 1, wherein: the lifting mechanism (3) comprises a motor (301), a first bevel gear (302), a second bevel gear (303), a screw rod (304) and a lifting rod (305), wherein the output end of the motor (301) penetrates through the lifting rod (305) and extends to the outside of the lifting rod (305), the first bevel gear (302) is fixedly connected to the output end of the motor (301), the second bevel gear (303) is meshed with the first bevel gear (302), the top end of the screw rod (304) is fixedly connected to the bottom end of the second bevel gear (303), and the bottom end of the second bevel gear (303) is rotatably connected to the inner bottom end of the lifting rod (305).

3. The retractable teaching board for teaching of claim 2, wherein: the bottom of screw rod (304) extends to the inside of foot rest (1) and with the inside top threaded connection of foot rest (1), the outer wall fixedly connected with support frame (11) of lifting rod (305), and the stiff end fixed connection of motor (301) is in the top of support frame (11), motor (301) and controller (10) electric connection.

4. The retractable teaching board for teaching of claim 2, wherein: the top end of the lifting rod (305) is fixedly connected to the bottom end of the sliding mechanism (5), and the first bevel gear (302) is positioned above the second bevel gear (303).

5. The retractable teaching board for teaching of claim 1, wherein: the extension mechanism (7) comprises an air cylinder (701), a toothed plate I (702), a folding rod (703), a fixing plate (704) and gears (705), wherein the fixing plate (704) is provided with two symmetrical plates, one of the two symmetrical plates is fixedly connected with a push plate on the outer wall of the fixing plate (704), the output end of the air cylinder (701) is fixedly connected with the bottom end of the push plate, the toothed plate I (702) is provided with two groups of symmetrical plates, one end of the toothed plate I (702) is respectively fixedly connected with two sides of the fixing plate (704), the folding rod (703) is provided with two symmetrical plates, and the gears (705) are respectively fixedly connected with two ends of the folding rod (703) through bearings.

6. The retractable teaching board for teaching of claim 5, wherein: the fixed plate (704) is arranged to be in a parallelogram, the gear (705) is meshed with the toothed plate I (702), the pushing plate extends to the outer part of the blackboard I (6), the air cylinder (701) is fixedly connected to the outer wall of the blackboard I (6), one side of the other fixed plate (704) is fixedly connected to the inner wall of the blackboard II (8), and one fixed plate (704) is movably connected to the inner part of the blackboard I (6).

7. The retractable teaching board for teaching of claim 1, wherein: slide mechanism (5) are including fixed shell (501), slider (502), cam (503), reset lever (504), pulley (505) and fixed axle (506), slider (502) sliding connection is in the inside of fixed shell (501), the bottom fixed connection of reset lever (504) is in the top of slider (502), fixed axle (506) fixed connection is in one side of keeping away from reset lever (504), cam (503) rotate the middle section of connecting in fixed axle (506), the bottom of fixed axle (506) extends to the outside of fixed shell (501), one side fixed connection of pulley (505) is in the one end of reset lever (504), one end swing joint of cam (503) is in the top of fixed shell (501).

8. The retractable teaching board for teaching of claim 7, wherein: two toothed plates II (12) are fixedly connected to one side of the top end of the fixing shell (501), a plurality of tooth grooves are formed in the outer wall of the cam (503), the tooth grooves are meshed with the toothed plates II (12), the top end of the fixing shell (501) is fixedly connected to the bottom end of the first blackboard (6), and the top end of the fixing shaft (506) is fixedly connected to the bottom end of the second blackboard (8).