CN210390582U

CN210390582U - Wisdom teaching aid

Info

Publication number: CN210390582U
Application number: CN201921114236.2U
Authority: CN
Inventors: 饶莉; 廖奕
Original assignee: Capital Normal University
Current assignee: Capital Normal University
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-24
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses an intelligent teaching aid, including compasses and blackboard, the compasses include rotary rod and dead lever, and rotary rod and dead lever are articulated, still include the motor, chalk fixed subassembly and the blackboard locating component that are provided with the transmission connecting axle, and one end of rotary rod is provided with the rotation axis that the cover was established on the transmission connecting axle, and motor drive transmission connecting axle rotates, and the transmission connecting axle drives rotation axis and rotary rod rotation, the other end of rotary rod with chalk fixed subassembly is connected, the fixed first ring that is provided with in one end of dead lever, the other end of dead lever with blackboard locating component is connected, the one end of rotation axis with rotary rod fixed connection, the other end of rotation axis with output shaft one side of motor is connected; the blackboard top is equipped with a cavity, and the tip of blackboard locating component is arranged in the cavity and can move along the cavity and make the compasses be located the different positions of blackboard.

Description

Wisdom teaching aid

Technical Field

The utility model belongs to the technical field of the teaching aid, especially, wisdom teaching aid, including compasses and blackboard.

Background

Compasses, which is a tool used for drawing circles or arcs, are commonly used for drawing by rulers and compasses. Compasses can be classified into teaching and student, and the compasses for teaching have a large size and are generally used for drawing circles or arcs on a blackboard, while the compasses for student have a small size and are generally used for drawing circles or arcs on a homework book or test paper. Most of compasses for teaching are simple compasses made of wood, the positioning head end of the compasses is an iron pointed top, and if the pressing force is too large, a blackboard is easily scratched, so that permanent damage is caused; if the pressing force is too small, the positioning head end on the smooth blackboard is not easy to fix, the drawing circle or arc is easy to generate dislocation error, the force is difficult to control, and the circle or arc is difficult to draw rapidly.

For example, the chinese utility model patent of patent No. ZL201720929200.4(CN207565205U) 'a wisdom teaching compasses', its disclosed technical scheme passes through the lower extreme with a rule pole and is connected with the magnet piece through slewing mechanism, and slewing mechanism can adjust the contained angle between rule pole and the magnet piece in a flexible way, and the magnet piece is fixed with the blackboard actuation. Through the pinnacle of replacing traditional iron with the magnet piece, though can avoid causing the damage to the blackboard, the adsorption efficiency of magnet piece is limited, and the user needs reasonable distribution to act on the pressure on two gauge rods when drawing, if pressure distribution improper still probably take place gauge rod and blackboard relative slip, is difficult to draw circle or arc fast.

Disclosure of Invention

The utility model aims to solve the technical problem that a can stabilize the wisdom teaching aid of being connected with the blackboard is provided, help drawing circle or arc fast.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the utility model provides an wisdom teaching aid, includes compasses and blackboard (6), the compasses includes rotary rod (1) and dead lever (2), and rotary rod (1) and dead lever (2) are articulated, its characterized in that: the chalk fixing device is characterized by further comprising a motor (3) provided with a transmission connecting shaft (31), a chalk fixing assembly (4) and a blackboard positioning assembly (5), wherein a rotating shaft (11) sleeved on the transmission connecting shaft (31) is arranged at one end of a rotating rod (1), the motor (3) drives the transmission connecting shaft (31) to rotate, the transmission connecting shaft (31) drives the rotating shaft (11) and the rotating rod (1) to rotate, the other end of the rotating rod (1) is connected with the chalk fixing assembly (4), a first circular ring (21) is fixedly arranged at one end of a fixing rod (2), the other end of the fixing rod (2) is connected with the blackboard positioning assembly (5), one end of the rotating shaft (11) is fixedly connected with the rotating rod (1), and the other end of the rotating shaft (11) is connected with one side of an output shaft of the motor; the blackboard (6) top is equipped with a cavity (61), the tip of blackboard locating component (5) is located in cavity (61) and can move along cavity (61) makes the compasses be located blackboard (6) different positions.

Furthermore, the blackboard positioning assembly (5) comprises a second extension arm (51) which is vertically arranged, a second adjusting bolt (52) and a positioning support plate (53) which is horizontally arranged, a second waist-shaped hole (511) is formed in the second extension arm (51), a connecting screw hole (22) is formed in the other end of the fixing rod (2), the screw end of the second adjusting bolt (52) penetrates through the second waist-shaped hole (511) and then is in threaded connection with the connecting screw hole (22), and one end of the positioning support plate (53) is fixedly connected with the upper end of the second extension arm (51); cavity (61) are equipped with entry (62) with blackboard length parallel arrangement, entry (62) supply location backup pad (53) other end gets into in cavity (61), cavity (61) bottom is equipped with pulley groove (63), pulley (531) that location backup pad (53) were equipped with, pulley (531) are located in pulley groove (63).

Further, the pulley (531) is driven to rotate by another motor.

Furthermore, one end of the rotating shaft (11) is connected with the first circular ring (21) through a bearing (111), the outer ring of the bearing (111) is fixedly connected with the first circular ring (21), and the inner ring of the bearing (111) is fixedly connected with the transmission connecting shaft (31).

Further, the device comprises a control device (12), wherein the control device (12) comprises a motor control circuit and a control signal receiving circuit, and the motor control circuit is used for controlling the starting and the stopping of the motor, the rotating direction of the output shaft of the motor and the rotating time; the control signal receiving circuit is used for receiving a signal instruction sent by the mobile terminal to control the motor and sending the signal instruction to the motor control circuit; the mobile terminal is a smart phone or a tablet computer.

Further, motor (3) include motor housing (32), are equipped with a storage tank (321) on motor housing (32) set up sucking disc (33) in storage tank (321), sucking disc (33) will motor (3) and blackboard (6) carry out interim fixed connection.

Further, sucking disc (33) are automatic extending structure, and it is fixed on the moving member, the moving member passes through threaded connection with the opposite side output shaft of motor, thereby makes the moving member can be along axial displacement when the opposite side output shaft rotates and ensures that sucking disc (33) are connected or separate with blackboard (6).

Furthermore, the chalk fixing component (4) comprises a first extension arm (41), a chalk sleeve (42) and two first adjusting bolts (43), a plurality of positioning screw holes (411) and a chalk through hole (412) which are arranged at intervals along the length direction are formed in the first extension arm (41), a first waist-shaped hole (13) is formed in the rotating rod (1), the screw end of each first adjusting bolt (43) penetrates through the corresponding first waist-shaped hole (13) and then is in threaded connection with the corresponding positioning screw hole (411), and the chalk sleeve (42) is fixedly arranged at the chalk through hole (412).

Further, the chalk sleeve (42) comprises an upper cover (421) corresponding to the chalk through hole (412) and two compression springs (422), two connecting flanges are arranged on the upper cover (421), one end of each compression spring (422) is fixedly connected with the first extension arm (41), and the other end of each compression spring (422) is fixedly connected with the connecting flange.

Further, the rotating shaft (11) is connected with the rotating rod (1) through a second circular ring (15), one end of the rotating rod (1) is fixedly connected with the outer side wall of the second circular ring (15), the rotating shaft (11) and the second circular ring (15) are located on the same axis, and the outer diameter of the second circular ring (15) is larger than that of the first circular ring (21); the outer edge of the first circular ring (21) is provided with a first angle scale (211), and the outer edge of the second circular ring (15) is provided with a second angle scale (151).

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses a compasses and blackboard mutually support for the use of teaching aid is more automatic, makes things convenient for teacher's operation.

2. The utility model discloses be equipped with the pulley groove on the blackboard, the compasses pass through motor drive and realize the removal of self for teaching efficiency more.

3. The utility model discloses a motor drive compasses automatic movement draws required arc, has changed the tradition and has needed the staff operation for the arc of drawing is more standard, also reduces the time that the teacher contacted the chalk.

4. The utility model discloses a track of the motion of mobile terminal control compasses is more convenient and accurate, also can be through mobile terminal control pulley displacement, has avoided staff direct operation compasses.

5. The utility model discloses a with the coaxial setting of transmission connecting axle, first ring and rotation axis, the motor adsorbs on the blackboard in order to confirm the position of this center pin, confirms the central point of drawing circle or arc promptly and puts, and the other end of dead lever passes through blackboard locating component and is connected with the blackboard simultaneously, prevents that dead lever and blackboard from taking place relative slip, and stability is good, and the reliability is high.

6. The first extension arm of the utility model is matched with the rotary rod to adjust the distance between the chalk sleeve and the motor, namely, the inner diameter length of a circle or an arc, and the application range is wide; the horizontal location backup pad can the butt at the up end of blackboard to be connected the height that the adjustment motor was located on the blackboard through second extension arm and dead lever, so that the user finds suitable centre of a circle position on the blackboard and draws.

Drawings

FIG. 1 is a schematic view I of the middle compasses of the present invention;

FIG. 2 is a schematic view II of the structure of the middle compasses of the present invention;

FIG. 3 is an explosion diagram III of the middle compasses of the present invention;

FIG. 4 is an explosion diagram IV of the middle compasses of the present invention;

FIG. 5 is a schematic view of the blackboard structure of the present invention;

fig. 6 is a schematic view of the structure of the middle positioning support plate of the present invention.

In the figure: 1-rotating the rod; 11-a rotating shaft; 111-a bearing; 12-a control device; 13-first kidney-shaped hole; 14-a first length scale; 15-a second ring; 151-second angle scale; 2, fixing a rod; 21 — a first ring; 211 — first angle scale; 22-connecting screw holes; 3, a motor; 31-a transmission connecting shaft; 32-a motor housing; 321-a containing groove; 33-a suction cup; 4-a chalk holding assembly; 41 — a first extender arm; 411-positioning screw holes; 412-chalk perforation; 413-second length scale; 42-chalk sleeve; 421-an upper cover; 422-compression spring; 43 — a first adjusting bolt; 5-blackboard positioning assembly; 51 — a second extender arm; 511-a second kidney hole; 52-second adjusting bolt; 53-positioning the supporting plate; 531-pulley; 6, a blackboard; 61-cavity; 62-an inlet; 63-pulley groove.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1: as shown in the figure, the intelligent teaching compass comprises a rotary rod 1, a fixed rod 2, a motor 3 provided with a transmission connecting shaft 31, a chalk fixing component 4 and a blackboard positioning component 5. One end of the rotating rod 1 is provided with a rotating shaft 11 sleeved on the transmission connecting shaft 31, the motor 3 drives the transmission connecting shaft 31 to rotate, the transmission connecting shaft 31 drives the rotating shaft 11 and the rotating rod 1 to rotate, and the transmission connecting shaft 31 and the mounting hole in the rotating shaft 11 are of a non-circular structure so that the transmission between the transmission connecting shaft 31 and the rotating shaft 11 can be carried out.

The other end of the rotating rod 1 is connected with the chalk fixing component 4, one end of the fixing rod 2 is fixedly provided with a first circular ring 21, the other end of the fixing rod 2 is connected with the blackboard positioning component 5, one end of the rotating shaft 11 is connected with the first circular ring 21 through a bearing 111, the outer ring of the bearing 111 is fixedly connected with the first circular ring 21, the inner ring of the bearing 111 is fixedly connected with the transmission connecting shaft 31, and the connecting mode ensures that the rotating rod 1 rotates when the rotating shaft 11 works, but the fixing rod 2 keeps static. The other end of the rotating shaft 11 is connected to the output shaft side of the motor 3.

In this embodiment, the control device 12 includes a motor control circuit and a control signal receiving circuit, the motor control circuit is used for controlling the start and stop of the motor, the rotation direction of the output shaft of the motor 3 and the rotation time; the control signal receiving circuit is used for receiving a signal instruction sent by the mobile terminal to control the motor and sending the signal instruction to the motor control circuit, and the mobile terminal can be a smart phone or a tablet computer.

In this embodiment, the motor 3 includes a motor housing 32, a receiving groove 321 is formed in the motor housing 32, and a suction cup 33 is disposed in the receiving groove 321, wherein the suction cup 33 can temporarily and fixedly connect the motor 3 and the blackboard 6. The sucker 33 can also be of an automatic telescopic structure and can be fixed on the moving member, the moving member is connected with the output shaft of the motor through threads, and the output shaft of the other side rotates to enable the moving member to move along the axial direction so as to ensure that the sucker 33 is connected with or separated from the blackboard.

In this embodiment, the distance between the blackboard positioning assembly 5 and the blackboard 6 is greater than the distance between the fixing rod 2 and the blackboard 6, the distance between the fixing rod 2 and the blackboard is greater than the distance between the rotating rod 1 and the blackboard, and the distance between the rotating rod 1 and the blackboard is greater than the distance between the chalk fixing assembly 4 and the blackboard.

Example 2: the rest of the chalk fixing assembly is the same as the first embodiment, and the chalk fixing assembly 4 includes a first extension arm 41, a chalk sleeve 42 and two first adjusting bolts 43, the first extension arm 41 is provided with a plurality of positioning screw holes 411 and a chalk through hole 412 which are arranged at intervals along the length direction, the rotating rod 1 is provided with a first waist-shaped hole 13, the screw ends of the two first adjusting bolts 43 are respectively screwed with the two positioning screw holes 411 after penetrating through the first waist-shaped hole 13, and the chalk sleeve 42 is fixedly arranged at the chalk through hole 412.

In this embodiment, the chalk holder 42 includes an upper cover 421 corresponding to the chalk insertion hole 412 and two compression springs 422, two connection flanges are provided on the upper cover 421, one end of the compression spring 422 is fixedly connected to the first extension arm 41, and the other end of the compression spring 422 is fixedly connected to the connection flanges.

In this embodiment, the rotating rod 1 is provided with a first length scale 14, and the first extension arm 41 of the chalk fixing component 4 is provided with a second length scale 413.

Example 3: the rest parts are the same as the first embodiment, and the difference is that the blackboard positioning assembly 5 comprises a second extension arm 51, a second adjusting bolt 52 and a positioning support plate 53 which is horizontally arranged, the second extension arm 51 is provided with a second waist-shaped hole 511, the other end of the fixing rod 2 is provided with a connecting screw hole 22, the screw end of the second adjusting bolt 52 passes through the second waist-shaped hole 511 and then is in threaded connection with the connecting screw hole 22, and one end of the positioning support plate 53 is fixedly connected with the upper end of the second extension arm 51.

Example 4: the rest of the embodiment is the same as the first embodiment, except that the rotating shaft 11 is connected with the rotating rod 1 through a second ring 15, and a through hole is formed between the rotating shaft 11 and the second ring 15 for the transmission connecting shaft 31 to pass through.

In this embodiment, the outer edge of the first ring 21 is provided with a first angle scale 211, and the outer edge of the second ring 15 is provided with a second angle scale 151.

As shown in figures 5 and 6, the top of the blackboard 6 is provided with a cavity 61, and the end of the blackboard positioning assembly 5 is positioned in the cavity 61 and can move along the cavity 61 to enable the compasses to be positioned at different positions on the blackboard 6. The cavity 61 is provided with an inlet 62 parallel to the length of the blackboard, the other end of the positioning support plate 53 enters the cavity 61 through the inlet 62, the bottom of the cavity 61 is provided with a pulley groove 63, the positioning support plate 53 is provided with a pulley 531, and the pulley 531 is positioned in the pulley groove 63. Pulley 531 is rotated by another motor.

The control device can also control the other motor, and the motor control circuit is used for controlling the starting and the stopping of the motor, the rotating direction and the rotating time of the output shaft of the motor; the control signal receiving circuit is used for receiving a signal instruction sent by the mobile terminal to control the motor and sending the signal instruction to the motor control circuit, and the mobile terminal can be a smart phone or a tablet computer.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. The utility model provides an wisdom teaching aid, includes compasses and blackboard (6), the compasses includes rotary rod (1) and dead lever (2), and rotary rod (1) and dead lever (2) are articulated, its characterized in that: the chalk fixing device is characterized by further comprising a motor (3) provided with a transmission connecting shaft (31), a chalk fixing assembly (4) and a blackboard positioning assembly (5), wherein a rotating shaft (11) sleeved on the transmission connecting shaft (31) is arranged at one end of a rotating rod (1), the motor (3) drives the transmission connecting shaft (31) to rotate, the transmission connecting shaft (31) drives the rotating shaft (11) and the rotating rod (1) to rotate, the other end of the rotating rod (1) is connected with the chalk fixing assembly (4), a first circular ring (21) is fixedly arranged at one end of a fixing rod (2), the other end of the fixing rod (2) is connected with the blackboard positioning assembly (5), one end of the rotating shaft (11) is fixedly connected with the rotating rod (1), and the other end of the rotating shaft (11) is connected with one side of an output shaft of the motor; the blackboard (6) top is equipped with a cavity (61), the tip of blackboard locating component (5) is located in cavity (61) and can move along cavity (61) makes the compasses be located blackboard (6) different positions.

2. The intelligent teaching aid of claim 1, wherein: the blackboard positioning assembly (5) comprises a second extension arm (51) which is vertically arranged, a second adjusting bolt (52) and a positioning support plate (53) which is horizontally arranged, a second waist-shaped hole (511) is formed in the second extension arm (51), a connecting screw hole (22) is formed in the other end of the fixing rod (2), the screw end of the second adjusting bolt (52) penetrates through the second waist-shaped hole (511) and then is in threaded connection with the connecting screw hole (22), and one end of the positioning support plate (53) is fixedly connected with the upper end of the second extension arm (51); cavity (61) are equipped with entry (62) with blackboard length parallel arrangement, entry (62) supply location backup pad (53) other end gets into in cavity (61), cavity (61) bottom is equipped with pulley groove (63), pulley (531) that location backup pad (53) were equipped with, pulley (531) are located in pulley groove (63).

3. The intelligent teaching aid of claim 2, wherein: the pulley (531) is driven to rotate by another motor.

4. The intelligent teaching aid of claim 3, wherein: one end of the rotating shaft (11) is connected with the first circular ring (21) through a bearing (111), the outer ring of the bearing (111) is fixedly connected with the first circular ring (21), and the inner ring of the bearing (111) is fixedly connected with the transmission connecting shaft (31).

5. The intelligent teaching aid of claim 4, wherein: the control device (12) comprises a motor control circuit and a control signal receiving circuit, wherein the motor control circuit is used for controlling the starting and the stopping of the motor, the rotating direction of the output shaft of the motor and the rotating time; the control signal receiving circuit is used for receiving a signal instruction sent by the mobile terminal to control the motor and sending the signal instruction to the motor control circuit; the mobile terminal is a smart phone or a tablet computer.

6. The intelligent teaching aid of claim 5, wherein: motor (3) include motor housing (32), are equipped with a storage tank (321) on motor housing (32) set up sucking disc (33) in storage tank (321), sucking disc (33) will motor (3) carry out interim fixed connection with blackboard (6).

7. The intelligent teaching aid of claim 6, wherein: the sucker (33) is of an automatic telescopic structure and is fixed on the moving piece, the moving piece is connected with the output shaft of the other side of the motor through threads, and the output shaft of the other side rotates to enable the moving piece to move axially so as to ensure that the sucker (33) is connected with or separated from the blackboard (6).

8. The intelligent teaching aid of claim 7, wherein: the chalk fixing component (4) comprises a first extension arm (41), a chalk sleeve (42) and two first adjusting bolts (43), a plurality of positioning screw holes (411) and a chalk through hole (412) which are arranged at intervals along the length direction are formed in the first extension arm (41), a first waist-shaped hole (13) is formed in the rotating rod (1), the screw end of each first adjusting bolt (43) penetrates through the corresponding first waist-shaped hole (13) and then is in threaded connection with the corresponding positioning screw hole (411), and the chalk sleeve (42) is fixedly arranged at the chalk through hole (412).

9. The intelligent teaching aid of claim 8, wherein: the chalk sleeve (42) comprises an upper cover (421) corresponding to the chalk perforation (412) and two compression springs (422), two connecting flanges are arranged on the upper cover (421), one end of each compression spring (422) is fixedly connected with the first extension arm (41), and the other end of each compression spring (422) is fixedly connected with the connecting flange.

10. The intelligent teaching aid of claim 9, wherein: the rotating shaft (11) is connected with the rotating rod (1) through a second circular ring (15), one end of the rotating rod (1) is fixedly connected with the outer side wall of the second circular ring (15), the rotating shaft (11) and the second circular ring (15) are positioned on the same axis, and the outer diameter of the second circular ring (15) is larger than that of the first circular ring (21); the outer edge of the first circular ring (21) is provided with a first angle scale (211), and the outer edge of the second circular ring (15) is provided with a second angle scale (151).