CN214189082U

CN214189082U - Drawing board applied to mathematical education

Info

Publication number: CN214189082U
Application number: CN202120087898.6U
Authority: CN
Inventors: 邹圣华; 张艳艳; 吕恒民; 王建平; 郭志才
Original assignee: Jian College
Current assignee: Jian College
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-09-14
Anticipated expiration: 2031-01-13

Abstract

The utility model provides a drawing board applied to mathematical education, which comprises a shell, wherein the inner wall of the shell is connected with an inner plate in a sliding way, one side of the inner wall of the shell is connected with a first connecting plate through a shaft pin, one end of the first connecting plate, which is far away from the shell, is connected with a first rotating rod through a bearing, one end of the first rotating rod, which is far away from the first connecting plate, is connected with a second connecting plate through a bearing, and a first spring is fixedly connected between the first connecting plate and the second connecting plate. When the inner plate is accommodated in the shell, the slide rod is inserted into the limiting hole through the fixing device, and the inner plate is fixed.

Description

Drawing board applied to mathematical education

Technical Field

The utility model relates to a mathematical education technical field especially relates to a be applied to mathematical education's drawing board.

Background

Mathematical education, be study quantity, the structure, change, a subject of concepts such as space and information, from a certain angle see that belong to form science, mathematician and philosopher have a series of opinions to the definite scope and the definition of mathematics, along with the wideling popularization of mathematical education, a drawing board of being applied to mathematical education is also current big hot, current mathematical education drawing board is when using, the use size of desktop is fixed, can only write certain teaching knowledge, when writing a large amount of teaching knowledge to needs, the size of drawing board has received very big restriction, be not convenient for teacher's teaching.

Therefore, it is necessary to provide a drawing board for mathematical education to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an increase teaching area's drawing board of being applied to mathematical education.

The utility model provides a pair of be applied to mathematical education's drawing board, which comprises an outer shell, the inner wall sliding connection of shell has the inner panel, inner wall one side of shell is rotated through the pivot and is connected with first connecting plate, the one end that the shell was kept away from to first connecting plate is rotated through the bearing and is connected with first bull stick, the one end that first connecting plate was kept away from to first bull stick is rotated through the bearing and is connected with the second connecting plate, the first spring of fixedly connected with between first connecting plate and the second connecting plate, the one end that first bull stick was kept away from to the second connecting plate is passed through the pivot and is rotated with the inner panel and be connected, the bottom fixedly connected with turning device of inner panel, the inner wall bottom fixedly connected with fixing device of shell.

Preferably, turning device includes through-hole, second bull stick, gear, rack, motor and stop gear, the through-hole has been seted up to bottom one side of inner panel, the through-hole is inside to be connected with the second bull stick through the bearing rotation, the middle part fixedly connected with gear of second bull stick, the inner wall bottom fixedly connected with rack of shell, and the rack is connected with gear engagement, one side fixedly connected with motor of inner panel, the output of motor passes inner panel and second bull stick fixed connection, one side fixedly connected with stop gear of rack.

Preferably, stop gear is including solid fixed ring, spliced pole, slip tooth, second spring and stopper, the solid fixed ring of the one end bilateral symmetry fixedly connected with of rack, gu fixed ring's inside fixedly connected with spliced pole, two the middle part sliding connection of spliced pole has the slip tooth, the outside cover of spliced pole is equipped with the second spring, second spring one end and solid fixed ring fixed connection, the other end and the slip tooth fixed connection of second spring, gu fixed ring's one end fixedly connected with stopper is kept away from to the spliced pole.

Preferably, fixing device includes fixed block, slide opening, slide bar, third spring and push pedal, the inner wall bottom fixedly connected with fixed block of shell, the slide opening has been seted up at the middle part of fixed block, the inside sliding connection of slide opening has the slide bar, the outside cover of slide bar is equipped with the third spring, the one end and the slide bar fixed connection of third spring, the other end and the fixed block fixed connection of third spring, the one end of slide bar passes slide opening fixedly connected with push pedal, the inner panel is kept away from the one end of gear and has been seted up spacing hole.

Preferably, one end of the sliding rod, which is far away from the push plate, is arranged in an inclined plane.

Preferably, a lifting handle is fixedly connected to the top of the shell.

Compared with the prior art, the utility model provides a have following beneficial effect:

the utility model discloses during the use, open motor switch, the motor will drive gear revolve, through the meshing of gear and rack, and then drive the inner panel and rotate, the area of increase teaching, make things convenient for mr's work efficiency, when the inner panel is rotatory 180 degrees, through stop gear's use, prevent that the inner panel from extrudeing the damage that causes the device to one side of shell, close the motor can, when the inner panel is accomodate into shell inside, insert spacing downthehole portion with the slide bar through fixing device, fix the inner panel.

Drawings

Fig. 1 is one of the overall structural diagrams of the present invention;

fig. 2 is a second schematic view of the overall structure of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 2;

FIG. 5 is an enlarged view at C of FIG. 1;

fig. 6 is a schematic sectional view of the fixing device of the present invention;

fig. 7 is a schematic view of a partial top view of the fixing device of the present invention.

Reference numbers in the figures: 1. a housing; 2. an inner plate; 3. a first connecting plate; 4. a first rotating lever; 5. a second connecting plate; 6. a turning device; 7. a through hole; 8. a second rotating rod; 9. a gear; 10. a rack; 11. a motor; 12. a limiting mechanism; 13. a fixing ring; 14. connecting columns; 15. a sliding tooth; 16. a second spring; 17. a limiting block; 18. a fixing device; 19. a fixed block; 20. a slide hole; 21. a slide bar; 22. a third spring; 23. pushing the plate; 24. lifting a handle; 25. a first spring; 26. and a limiting hole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1, 2 and 3 in combination, a drawing board applied to mathematical education comprises a housing 1, an inner board 2 slidably connected to the inner wall of the housing 1, a first connecting board 3 rotatably connected to one side of the inner wall of the housing 1 through a shaft pin, a first rotating rod 4 rotatably connected to one end of the first connecting board 3 away from the housing 1 through a bearing, a second connecting board 5 rotatably connected to one end of the first rotating rod 4 away from the first connecting board 3 through a bearing, a first spring 25 fixedly connected between the first connecting board 3 and the second connecting board 5, a turning device 6 rotatably connected to the bottom of the inner board 2 through a shaft pin and a fixing device 18 fixedly connected to the bottom of the inner wall of the housing 1, a lifting handle 24 fixedly connected to the top of the housing 1 for facilitating the hand-held movement of the device, wherein the first spring 25 is in a slightly tensioned state before the inner board 2 rotates, when the inner plate 2 rotates, the inner plate 2 rotates to drive the second connecting plate 5 to rotate, and further drive the first connecting plate 3 to rotate, so that the first spring 25 is in a stretching state.

Referring to fig. 1, 2, 4 and 5, the turnover device 6 includes a through hole 7, a second rotating rod 8, a gear 9, a rack 10, a motor 11 and a limiting mechanism 12, the through hole 7 is formed on one side of the bottom of the inner plate 2, the second rotating rod 8 is rotatably connected inside the through hole 7 through a bearing, the gear 9 is fixedly connected to the middle of the second rotating rod 8, the rack 10 is fixedly connected to the bottom of the inner wall of the housing 1, the rack 10 is engaged with the gear 9, the motor 11 is fixedly connected to one side of the inner plate 2, the output end of the motor 11 passes through the inner plate 2 and is fixedly connected to the second rotating rod 8, the limiting mechanism 12 is fixedly connected to one side of the rack 10, the limiting mechanism 12 includes a fixing ring 13, a connecting column 14, a sliding tooth 15, a second spring 16 and a limiting block 17, fixing rings 13 are symmetrically and fixedly connected to both sides of one end of the rack 10, the connecting column 14 is fixedly connected to the inside of the fixing ring 13, the middle parts of the two connecting columns 14 are slidably connected with sliding teeth 15, the outer sides of the connecting columns 14 are sleeved with second springs 16, the resetting of the sliding teeth 15 is convenient, one ends of the second springs 16 are fixedly connected with the fixing ring 13, the other ends of the second springs 16 are fixedly connected with the sliding teeth 15, one ends of the connecting columns 14, which are far away from the fixing ring 13, are fixedly connected with limiting blocks 17, when the inner plate 2 is unfolded, a switch of a motor 11 is turned on, the motor 11 drives a gear 9 to rotate, the gear 9 is meshed with a rack 10 through the gear 9, so as to drive the inner plate 2 to rotate, when the inner plate 2 rotates 180 degrees, the teeth of the gear 9 are meshed with the sliding teeth 15, so as to drive the sliding teeth 15 to slide on the outer sides of the connecting columns 14, in the moving process of the sliding teeth 15, the sliding teeth 15 are cancelled to be meshed with the gear 9, so as to stop driving the inner plate 2 to rotate, so as to prevent the inner plate 2 from extruding one side of the shell 1 to cause the damage of the device, the motor 11 is turned off.

Referring to fig. 2, 6 and 7 in combination, the fixing device 18 includes a fixing block 19, a sliding hole 20, a sliding rod 21, a third spring 22 and a push plate 23, the fixing block 19 is fixedly connected to the bottom of the inner wall of the housing 1, the sliding hole 20 is formed in the middle of the fixing block 19, the sliding rod 21 is slidably connected to the inside of the sliding hole 20, the third spring 22 is sleeved on the outer side of the sliding rod 21, one end of the third spring 22 is fixedly connected to the sliding rod 21, the other end of the third spring 22 is fixedly connected to the fixing block 19, one end of the sliding rod 21 passes through the sliding hole 20 and is fixedly connected to the push plate 23, a limit hole 26 is formed in one end of the inner plate 2 away from the gear 9, one end of the sliding rod 21 away from the push plate 23 is disposed in an inclined plane, the sliding rod 21 can be slid into the limit hole 26 when the inner plate 2 is folded, the rotation of the motor 11 is controlled reversely, so that the inner plate 2 is accommodated into the housing 1, at this time, the inner plate 2 extrudes the inclined plane of the sliding rod 21, the sliding rod 21 is driven to slide in the sliding hole 20, when the sliding rod 21 completely exceeds the limiting hole 26, the third spring 22 drives the sliding rod 21 to be inserted into the limiting hole 26 to fix the inner plate 2, and when the inner plate 2 rotates, the push plate 23 is pushed to enable the sliding rod 21 to slide out of the limiting hole 26, and then the motor 11 is turned on.

The working principle is as follows: when the device is used, the first spring 25 is in a slightly tensioned state before the inner plate 2 rotates, when the inner plate 2 rotates, the inner plate 2 rotates to drive the second connecting plate 5 to rotate and further drive the first connecting plate 3 to rotate, so that the first spring 25 is in a stretched state, when the inner plate 2 is unfolded, the switch of the motor 11 is turned on, the motor 11 drives the gear 9 to rotate, the gear 9 is meshed with the rack 10 through the gear 9 and further drives the inner plate 2 to rotate, when the inner plate 2 rotates 180 degrees, the teeth of the gear 9 are meshed with the sliding teeth 15 and further drives the sliding teeth 15 to slide outside the connecting column 14, in the moving process of the sliding teeth 15, the sliding teeth 15 cancel the meshing with the gear 9 and further stop driving the inner plate 2 to rotate, the damage of the device caused by the extrusion of the inner plate 2 to one side of the shell 1 is prevented, the motor 11 is turned off, and the steering of the motor 11 is reversely controlled, make the inner panel 2 accomodate into inside shell 1, at this moment, inner panel 2 will extrude the inclined plane of slide bar 21, drive slide bar 21 and slide in slide opening 20 is inside, after slide bar 21 surpassed spacing hole 26 completely, third spring 22 will drive slide bar 21 and insert inside spacing hole 26, fix inner panel 2, when rotating inner panel 2, promote push pedal 23, make behind the spacing hole 26 of slide bar 21 roll-off, it can to open motor 11.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A drawing board applied to mathematical education comprises a shell (1) and is characterized in that, the inner wall of the shell (1) is connected with an inner plate (2) in a sliding way, one side of the inner wall of the shell (1) is connected with a first connecting plate (3) through a shaft pin in a rotating way, one end of the first connecting plate (3) far away from the shell (1) is rotatably connected with a first rotating rod (4) through a bearing, one end of the first rotating rod (4) far away from the first connecting plate (3) is rotatably connected with a second connecting plate (5) through a bearing, a first spring (25) is fixedly connected between the first connecting plate (3) and the second connecting plate (5), one end of the second connecting plate (5) far away from the first rotating rod (4) is rotationally connected with the inner plate (2) through a shaft pin, the bottom of the inner plate (2) is fixedly connected with a turnover device (6), and the bottom of the inner wall of the shell (1) is fixedly connected with a fixing device (18).

2. A drawing board for mathematical education as claimed in claim 1, the turnover device (6) comprises a through hole (7), a second rotating rod (8), a gear (9), a rack (10), a motor (11) and a limiting mechanism (12), a through hole (7) is arranged at one side of the bottom of the inner plate (2), a second rotating rod (8) is rotatably connected inside the through hole (7) through a bearing, the middle part of the second rotating rod (8) is fixedly connected with a gear (9), the bottom of the inner wall of the shell (1) is fixedly connected with a rack (10), and the rack (10) is meshed with the gear (9), one side of the inner plate (2) is fixedly connected with a motor (11), the output end of the motor (11) penetrates through the inner plate (2) to be fixedly connected with the second rotating rod (8), and one side of the rack (10) is fixedly connected with a limiting mechanism (12).

3. The drawing board applied to mathematical education as claimed in claim 2, wherein the limiting mechanism (12) comprises a fixing ring (13), a connecting column (14), a sliding tooth (15), a second spring (16) and a limiting block (17), the fixing ring (13) is fixedly connected to one end of the rack (10) in a bilateral symmetry mode, the fixing ring (13) is fixedly connected to the inner portion of the fixing ring (13) in a fixing mode, the connecting column (14) is connected to the sliding tooth (15) in a sliding mode in the middle portion, the second spring (16) is sleeved on the outer side of the connecting column (14), one end of the second spring (16) is fixedly connected to the fixing ring (13), the other end of the second spring (16) is fixedly connected to the sliding tooth (15), and the connecting column (14) is far away from the limiting block (17) which is fixedly connected to one end of the fixing ring (13).

4. A drawing board for mathematical education as claimed in claim 2, the fixing device (18) comprises a fixing block (19), a sliding hole (20), a sliding rod (21), a third spring (22) and a push plate (23), the bottom of the inner wall of the shell (1) is fixedly connected with a fixed block (19), the middle part of the fixed block (19) is provided with a slide hole (20), a slide rod (21) is connected in the slide hole (20) in a sliding manner, a third spring (22) is sleeved on the outer side of the slide rod (21), one end of the third spring (22) is fixedly connected with the sliding rod (21), the other end of the third spring (22) is fixedly connected with the fixed block (19), one end of the slide bar (21) passes through the slide hole (20) and is fixedly connected with a push plate (23), and one end of the inner plate (2) far away from the gear (9) is provided with a limiting hole (26).

5. Drawing board for mathematics teaching according to claim 4, characterized in that the end of the slide bar (21) remote from the push plate (23) is bevelled.

6. Drawing board for mathematical education as claimed in claim 1, characterized in that a handle (24) is fixedly connected to the top of the housing (1).