CN210727224U

CN210727224U - Portable two-sided blackboard convenient to adjust is used in teaching

Info

Publication number: CN210727224U
Application number: CN201920689652.9U
Authority: CN
Inventors: 马向华; 赵艳; 陈显文
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-06-12
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses a portable two-sided blackboard convenient to adjust is used in teaching, including the casing, the left side of casing is provided with rotatory pivot, and the left side of casing just is located the below fixedly connected with stopper of rotatory pivot, and the position that the top of rotatory pivot corresponds the stopper is provided with the round pin axle, and the bottom of round pin axle runs through rotatory pivot and stopper and extends to the outside of stopper extremely down from last in proper order. The utility model discloses a rotatory pivot, the round pin axle, first gear, driven shaft, the second gear, the turning block, the dwang, circular spout and rolling ball mutually support, when using the blackboard, it is rotatory that rotatory pivot drives driven shaft through first gear and second gear, driven shaft drives the turning block rotatory, the turning block drives the blackboard main part rotatory, make the regulation face more simple and convenient, do not need the teacher to remove whole blackboard and just can adjust, not only labour saving and time saving, and save the teaching time, bring very big facility for teaching work.

Description

Portable two-sided blackboard convenient to adjust is used in teaching

Technical Field

The utility model relates to a teaching technical field specifically is a portable two-sided blackboard convenient to adjust is used in teaching.

Background

The teaching concept is abstracted and summarized from teaching phenomena and teaching practices, and the teaching meaning is developed along with the development of history. The definition of teaching this concept is not invariably either. Human perception of teaching is continuous. Reviewing the historical explanation of the teaching concept is of great significance to our correct understanding of the teaching concept. Teaching is a human-specific talent training activity consisting of teaching and learning of students. Through the activities, teachers purposefully, planningly and organically guide students to learn, master cultural scientific knowledge and skills, promote the quality improvement of students, enable the students to become people required by the society, and learn by means of different forms. The blackboard is generally made of wood board or ground glass, and can be written on by using specific writing materials such as chalk. In the teaching process, if the content of the blackboard writing is more, the content to be explained is copied on the blackboard in advance to save the time for class, the common movable double-sided blackboard for teaching is not convenient to adjust, the adjustment of the blackboard surface is troublesome when the blackboard is used, a teacher is required to move the whole blackboard for adjustment, time and labor are wasted, the teaching time is consumed, and great inconvenience is brought to the teaching work.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portable two-sided blackboard of being convenient for to adjust is used in teaching possesses the advantage of being convenient for to adjust, has solved the problem that common portable blackboard is not convenient for to adjust for teaching.

In order to achieve the above object, the utility model provides a following technical scheme: a portable double-sided blackboard convenient to adjust for teaching comprises a shell, wherein a rotating shaft is arranged on the left side of the shell, a limiting block is fixedly connected on the left side of the shell and below the rotating shaft, a pin shaft is arranged at the top of the rotating shaft corresponding to the limiting block, the bottom of the pin shaft sequentially penetrates through the rotating shaft and the limiting block from top to bottom and extends to the outside of the limiting block, the bottom of the pin shaft is respectively movably connected with the rotating shaft and the limiting block, the right end of the rotating shaft penetrates through the shell and extends to the inside of the shell, a first gear is fixedly connected with one end of the rotating shaft positioned in the shell, a fixing groove is formed in the bottom of the inner wall of the shell and on the right side of the first gear, a fixed bearing is fixedly connected on the inner wall of the fixing groove, a driven rotating shaft is movably connected with the top of, the first gear and the second gear are mutually meshed, the top of the driven rotating shaft is fixedly connected with a rotating block, the left side and the right side of the rotating block are both fixedly connected with a rotating rod, one side of the rotating rod, which is far away from the rotating block, is fixedly connected with a fixed block, the inner wall of the shell is provided with a circular chute matched with the fixed block, one side of the fixed block, which is far away from the rotating rod, penetrates through the circular chute and extends into the circular chute, one side of the fixed block, which is located inside the circular chute and is far away from the rotating rod, is fixedly connected with two connecting blocks, the two connecting blocks are fixedly connected through a supporting rotating shaft, the surface of the supporting rotating shaft is movably connected with a rolling ball, one side of the rolling ball, which is far away from the fixed block, is movably connected with the inner wall, the top ends of the fixing rods penetrate through the circular through groove and extend to the outside of the shell, and the two fixing rods located outside the shell are fixedly connected through the blackboard main body.

Preferably, the left side of the rotating shaft is fixedly connected with a rotating disc, and the left side of the rotating disc is fixedly connected with a handle.

Preferably, the top of the pin shaft is fixedly connected with a fastening block, and the top of the fastening block is fixedly connected with a pull ring.

Preferably, the four corners of the bottom of the shell are provided with movable wheels.

Preferably, the right side of the shell is fixedly connected with a handrail, the right side of the shell is fixedly connected with a fixing plate below the handrail, the top of the fixing plate is fixedly connected with a supporting block, and the top of the supporting block is fixedly connected with the handrail.

Preferably, a sealing ring is arranged at the top of the shell corresponding to the circular through groove, and the top end of the fixing rod penetrates through the sealing ring and extends to the outside of the fixing rod to be movably connected with the fixing rod.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a rotatory pivot, the round pin axle, first gear, fixing bearing, driven rotating shaft, the second gear, the turning block, the dwang, circular spout and rolling ball mutually support, when using the blackboard, rotatory pivot drives driven rotating shaft rotation through first gear and second gear, driven rotating shaft drives the turning block rotatory, the turning block drives the blackboard main part rotatory, make the regulation face more simple and convenient, do not need the teacher to remove whole blackboard and just can adjust, not only labour saving and time saving, and the teaching time has been practiced thrift, bring very big facility for teaching work.

2. The utility model discloses a rolling disc and handle are mutually supported, have played the pairing rotation pivot of being convenient for and have carried out the pivoted effect, mutually support through fastening block and pull ring, have played the effect of being convenient for stimulate the round pin axle, have played the effect of convenient removal through setting up the removal wheel, mutually support through handrail, fixed plate and supporting shoe, have played the effect of being convenient for to thrust unit, through setting up the sealing washer, have played sealed effect, prevent that the chalk dust from getting into inside the casing through circular logical groove.

Drawings

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

FIG. 2 is an enlarged view of a portion A-A of FIG. 1 according to the present invention;

fig. 3 is a partial enlarged view of B-B in fig. 2 according to the present invention.

In the figure: the blackboard comprises a shell 1, a rotating shaft 2, a limiting block 3, a pin shaft 4, a first gear 5, a fixing groove 6, a fixing bearing 7, a driven rotating shaft 8, a second gear 9, a rotating block 10, a rotating rod 11, a fixing block 12, a circular sliding groove 13, a connecting block 14, a supporting rotating shaft 15, a rolling ball 16, a fixing rod 17, a circular through groove 18, a blackboard body 19, a rotating disc 20, a handle 21, a fastening block 22, a pull ring 23, a moving wheel 24, a handrail 25, a fixing plate 26, a supporting block 27 and a sealing ring 28.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a portable double-sided blackboard for teaching purpose, which comprises a casing 1, a rotating shaft 2 is disposed on the left side of the casing 1, a limiting block 3 is fixedly connected to the left side of the casing 1 and below the rotating shaft 2, a rotating disc 20 is fixedly connected to the left side of the rotating shaft 2, a handle 21 is fixedly connected to the left side of the rotating disc 20, the rotating disc 20 and the handle 21 are mutually matched to facilitate the rotation of the rotating shaft 2, a pin shaft 4 is disposed on the top of the rotating shaft 2 corresponding to the limiting block 3, a fastening block 22 is fixedly connected to the top of the pin shaft 4, a pull ring 23 is fixedly connected to the top of the fastening block 22, the fastening block 22 and the pull ring 23 are mutually matched to facilitate the pulling of the pin shaft 4, the bottom end of the pin shaft 4 sequentially penetrates through the rotating shaft 2 and the limiting block 3 from top to bottom and extends to, the bottom end of the pin shaft 4 is movably connected with the rotating shaft 2 and the limiting block 3 respectively, the right end of the rotating shaft 2 penetrates through the shell 1 and extends into the shell, one end of the rotating shaft 2 positioned in the shell 1 is fixedly connected with a first gear 5, the bottom of the inner wall of the shell 1 and positioned on the right side of the first gear 5 are provided with a fixing groove 6, the inner wall of the fixing groove 6 is fixedly connected with a fixed bearing 7, the top of the fixed bearing 7 is movably connected with a driven rotating shaft 8, the surface of the driven rotating shaft 8 is fixedly connected with a second gear 9, the first gear 5 and the second gear 9 are mutually meshed, the top of the driven rotating shaft 8 is fixedly connected with a rotating block 10, the right side of the shell 1 is fixedly connected with a handrail 25, the right side of the shell 1 and positioned below the handrail 25 are fixedly connected with a fixing plate 26, the top of the, through the mutual cooperation of the armrest 25, the fixing plate 26 and the supporting block 27, the function of facilitating the pushing device is achieved, the rotating rod 11 is fixedly connected to the left side and the right side of the rotating block 10, the fixing block 12 is fixedly connected to one side of the rotating rod 11 far away from the rotating block 10, the circular chute 13 matched with the fixing block 12 is formed in the inner wall of the shell 1, one side of the fixing block 12 far away from the rotating rod 11 penetrates through the circular chute 13 and extends into the circular chute 13, two connecting blocks 14 are fixedly connected to one side of the fixing block 12 inside the circular chute 13 and far away from the rotating rod 11, the two connecting blocks 14 are fixedly connected through the supporting rotating shaft 15, the rolling ball 16 is movably connected to the surface of the supporting rotating shaft 15, one side of the rolling ball 16 far away from the fixing block 12 is movably connected with the inner wall of the circular chute 13, the fixing rods 17 are fixedly, the top ends of the fixed rods 17 penetrate through the circular through groove 18 and extend to the outside of the shell 1, a sealing ring 28 is arranged at the top of the shell 1 corresponding to the position of the circular through groove 18, the top ends of the fixed rods 17 penetrate through the sealing ring 28 and extend to the outside of the shell and are movably connected with the top ends of the fixed rods, a sealing effect is achieved by arranging the sealing ring 28, chalk dust is prevented from entering the inside of the shell 1 through the circular through groove 18, the two fixed rods 17 positioned at the outside of the shell 1 are fixedly connected through a blackboard main body 19, moving wheels 24 are arranged at four corners of the bottom of the shell 1, a convenient moving effect is achieved by arranging the moving wheels 24, the rotating shaft 2, the pin shaft 4, the first gear 5, the fixed bearing 7, the driven rotating shaft 8, the second gear 9, the rotating block 10, the rotating rod 11, the circular through groove 13 and the rolling ball 16 are matched with each other, when the blackboard is used, the, driven rotating shaft 8 drives turning block 10 rotatory, and turning block 10 drives blackboard main part 19 rotatory for it is comparatively simple and convenient to adjust the face, does not need the teacher to remove whole blackboard and just can adjust, and labour saving and time saving has not only practiced thrift the teaching time moreover, brings very big facility for teaching work.

When the blackboard eraser is used, the handrail 25 and the moving wheel 24 are matched with each other to play a role of facilitating a moving device, the pin shaft 4 is taken out from the rotating shaft 2 and the limiting block 3 through the fastening block 22 and the pull ring 23, the rotating shaft 2 is driven to rotate through the rotating disc 20 and the handle 21, the rotating shaft 2 drives the first gear 5 to rotate, the first gear 5 drives the second gear 9 which is meshed with the first gear to rotate, the second gear 9 drives the driven rotating shaft 8 to rotate, the bottom end of the driven rotating shaft 8 and the fixed bearing 7 rotate mutually, the driven rotating shaft 8 drives the rotating block 10 to rotate, the left side and the right side of the rotating block 10 respectively drive the rotating rod 11 to rotate, the rotating rod 11 drives the fixed block 12 to rotate, the fixed block 12 drives the rolling ball 16 to rotate on the inner wall of the circular sliding groove 13 through the connecting block 14 and the supporting rotating shaft 15, the rotating block 10 drives the fixed rod 17 to rotate, the adjustable blackboard has the advantages that the adjustable blackboard is simple and convenient, the adjustment can be carried out without moving the whole blackboard by a teacher, time and labor are saved, the teaching time is saved, and great convenience is brought to teaching work.

In summary, the following steps: this portable two-sided blackboard of being convenient for regulation is used in teaching is mutually supported through rotatory pivot 2, round pin axle 4, first gear 5, fixing bearing 7, driven spindle 8, second gear 9, turning block 10, dwang 11, circular spout 13 and rolling ball 16, has solved the problem that common portable blackboard is not convenient for adjust for teaching.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a teaching is with portable two-sided blackboard convenient to adjust, includes casing (1), its characterized in that: the left side of the shell (1) is provided with a rotating shaft (2), the left side of the shell (1) is fixedly connected with a limiting block (3) which is positioned below the rotating shaft (2), the top of the rotating shaft (2) is provided with a pin shaft (4) corresponding to the position of the limiting block (3), the bottom end of the pin shaft (4) sequentially penetrates through the rotating shaft (2) and the limiting block (3) from top to bottom and extends to the outside of the limiting block (3), the bottom end of the pin shaft (4) is respectively movably connected with the rotating shaft (2) and the limiting block (3), the right end of the rotating shaft (2) penetrates through the shell (1) and extends to the inside of the shell, one end of the rotating shaft (2) positioned inside the shell (1) is fixedly connected with a first gear (5), the bottom of the inner wall of the shell (1) and the right side positioned on the first gear (5) are, fixedly connected with fixing bearing (7) on the inner wall of fixed slot (6), the top swing joint of fixing bearing (7) has driven shaft (8), the fixed surface of driven shaft (8) is connected with second gear (9), first gear (5) and second gear (9) intermeshing, the top fixedly connected with turning block (10) of driven shaft (8), equal fixedly connected with dwang (11) in the left and right sides of turning block (10), one side fixedly connected with fixed block (12) of turning block (10) are kept away from in dwang (11), set up circular spout (13) of fixed block (12) looks adaptation on casing (1) inner wall, one side that dwang (11) were kept away from in fixed block (12) runs through circular spout (13) and extends to its inside, is located inside fixed block (12) of circular spout (13) and keeps away from one side fixedly connected with two connecting blocks (14) of dwang (11), through supporting pivot (15) fixed connection between two connecting blocks (14), the surperficial swing joint that supports pivot (15) has roll ball (16), the inner wall swing joint of one side and circular spout (13) of fixed block (12) is kept away from in roll ball (16), the equal fixedly connected with dead lever (17) in the left and right sides at rotating block (10) top, circular logical groove (18) with dead lever (17) looks adaptation are seted up at the top of casing (1) inner wall, the outside that circular logical groove (18) just extended to casing (1) is run through on the top of dead lever (17), is located through blackboard main part (19) fixed connection between two dead levers (17) of casing (1) outside.

2. The portable two-sided blackboard of claim 1 for teaching use convenient to adjust, its characterized in that: the left side fixedly connected with rolling disc (20) of rotatory pivot (2), the left side fixedly connected with handle (21) of rolling disc (20).

3. The portable two-sided blackboard of claim 1 for teaching use convenient to adjust, its characterized in that: the top fixedly connected with fastening block (22) of round pin axle (4), the top fixedly connected with pull ring (23) of fastening block (22).

4. The portable two-sided blackboard of claim 1 for teaching use convenient to adjust, its characterized in that: four corners of the bottom of the shell (1) are provided with movable wheels (24).

5. The portable two-sided blackboard of claim 1 for teaching use convenient to adjust, its characterized in that: the right side of casing (1) fixedly connected with handrail (25), the right side of casing (1) just is located below fixedly connected with fixed plate (26) of handrail (25), the top fixedly connected with supporting shoe (27) of fixed plate (26), the top and handrail (25) fixed connection of supporting shoe (27).

6. The portable two-sided blackboard of claim 1 for teaching use convenient to adjust, its characterized in that: the top of the shell (1) is provided with a sealing ring (28) at a position corresponding to the circular through groove (18), and the top end of the fixing rod (17) penetrates through the sealing ring (28) and extends to the outside of the fixing rod to be movably connected with the fixing rod.