CN211031922U

CN211031922U - Mathematical modeling is with show board that can draw

Info

Publication number: CN211031922U
Application number: CN201921747334.XU
Authority: CN
Inventors: 刘启
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-07-17
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a mathematical modeling is with show board of can drawing, including the drawing board, the front side bottom screwed connection of drawing board has the ash collecting groove, the equal screw connection in bottom left and right sides of drawing board has the support, rotary mechanism is all installed in both ends left side about the rear side of drawing board, the outer wall welding of shell has the one end of round bar, the other end of round bar and the rear side fixed connection of drawing board, the draw-in groove has all been seted up along circumference to the inner wall bottom of shell, the outer loop of the inner chamber bottom central point fixedly connected with bearing of shell, the inner ring interference fit of bearing has the pivot, the gear of pegging graft with the shell inner chamber has been cup jointed to the outer wall of pivot, the lower surface punching press of gear has the lug of front and back symmetry, and lug and draw-in groove inner chamber peg graft and gear braking. This mathematical modeling is with drawing show board can prevent that the drawing board from taking place the reflection of light, can make all students can both see the theme clearly, improves the teaching quality, and the mathematical modeling teaching of being convenient for uses.

Description

Mathematical modeling is with show board that can draw

Technical Field

The utility model relates to a mathematical modeling technical field specifically is a mathematical modeling is with show board of can drawing.

Background

The mathematical modeling is to establish a mathematical model according to an actual problem, solve the mathematical model, and then solve the actual problem according to a result. The mathematical modeling drawing board is used as a main tool for teaching, bears tasks such as modeling drawing, writing and the like, can reduce the space occupied by a blackboard by adopting the mathematical modeling drawing board, and can be displayed for a long time on the premise of not influencing other subject teaching;

in order to ensure the physical health of students, the window area in the classroom is relatively large, so that more sunlight irradiates to sterilize the air. But cause the drawing board reflection of light of mathematical modeling easily, lead to some students to be difficult to see the theme clearly, influence the teaching quality, consequently design a drawing board of mathematical modeling with anti-light-reflection function now.

Disclosure of Invention

An object of the utility model is to provide a mathematical modeling is with showing board that can draw to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a drawing display board for mathematical modeling comprises a drawing board, wherein a bottom end of the front side of the drawing board is connected with an ash collecting groove through screws, the left side and the right side of the bottom end of the drawing board are connected with supports through screws, and rotating mechanisms are arranged on the left side of the upper end and the lower end of the rear side of the drawing board;

the rotating mechanism comprises a shell, a round rod, a clamping groove, a rotating shaft, a sleeve, a tooth groove, a gear, a first spring, a convex block, a cover plate and a supporting plate;

the outer wall of the shell is welded with one end of a round rod, the other end of the round rod is fixedly connected with the rear side of the drawing board, the bottom end of the inner wall of the shell is circumferentially provided with a clamping groove, the center position of the bottom end of the inner cavity of the shell is fixedly connected with an outer ring of a bearing, the inner ring of the bearing is in interference fit with a rotating shaft, the outer wall of the rotating shaft is sleeved with a gear which is inserted into the inner cavity of the shell, the lower surface of the gear is punched with a convex block which is symmetrical front and back, the convex block is inserted into the inner cavity of the clamping groove to brake the gear, the bottom of the outer wall of the rotating shaft is sleeved with a first spring which is inserted into the inner cavity of the gear, the middle part of the outer wall of the rotating shaft is in interference fit with a sleeve which is inserted into the inner cavity of the shell, the top, the top end of the rotating shaft extends out of the upper surface of the cover plate and is fixedly connected with one end of the supporting plate, and the other end of the supporting plate is provided with a shading mechanism;

the shading mechanism comprises a U-shaped frame, a first shading plate, a slide way, an arc-shaped groove, a second shading plate, a circular groove, a second spring, a steel ball and a handle;

the right side of U-shaped frame and the left side fixed connection of backup pad, first light screen is installed to the inner chamber front side of U-shaped frame, the slide has all been seted up to the rear side that the inner wall is located first light screen about the U-shaped frame, the inner wall inboard of slide has all been seted up the arc wall from last to down, the inner chamber of slide is pegged graft and is had the second light screen that can reciprocate, the circular slot has all been seted up to lateral wall bottom about the second light screen, the inner chamber of circular slot is pegged graft respectively from inside to outside and is had second spring and steel ball, the inner chamber and the arc wall of steel ball are pegged graft to the outer wall extension circular slot, handle screw connection puts at the top central point of second light screen.

Preferably, the number of the clamping grooves is eighteen, and the eighteen clamping grooves are distributed at the bottom end of the inner cavity of the shell at intervals of 20 degrees clockwise.

Preferably, the sum of the heights of the gear and the projection is less than the height of the inner cavity of the sleeve.

Preferably, a plurality of arc-shaped grooves are arranged on the inner side of the inner wall of the slide way from top to bottom at intervals, and the distance between every two adjacent arc-shaped grooves is 5 cm.

Preferably, the diameter of the opening of the circular groove is smaller than that of the steel ball, and the length of the steel ball extending out of the inner cavity of the circular groove is smaller than the radius of the steel ball.

Compared with the prior art, the beneficial effects of the utility model are that: this mathematical modeling is with show board of can drawing changes shading mechanism's the angle of putting through rotary mechanism, makes shading mechanism can remove according to the angle of shining of sunshine, and rethread shading mechanism realizes the shading to the drawing board, prevents that the drawing board from taking place to reflect light, can make all students can both see the title clearly, improves the teaching quality, and the mathematical modeling teaching of being convenient for is used.

Drawings

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

fig. 2 is an exploded view of the rotating mechanism of the present invention;

fig. 3 is a bottom view of the sleeve of the present invention;

fig. 4 is an exploded view of the shading mechanism of the present invention;

fig. 5 is an enlarged view of the position a of the present invention.

In the figure: 1. drawing board, 2, dust collecting groove, 3, support, 4, rotary mechanism, 401, shell, 402, round bar, 403, clamping groove, 404, rotating shaft, 405, sleeve, 406, tooth space, 407, gear, 408, first spring, 409, lug, 410, cover plate, 411, support plate, 5, shading mechanism, 501, U-shaped frame, 502, first shading plate, 503, slideway, 504, arc-shaped groove, 505, second shading plate, 506, round groove, 507, second spring, 508, steel ball, 509, handle.

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. 1-5, the present invention provides a technical solution: a drawing display board for mathematical modeling comprises a drawing board 1, wherein the drawing board 1 is used for mathematical modeling drawing and writing, an ash collecting groove 2 is connected to the bottom end of the front side of the drawing board 1 through screws, chalk ash is collected through the ash collecting groove 2, the chalk ash is prevented from falling on the ground to increase cleaning burden, supports 3 are connected to the left side and the right side of the bottom end of the drawing board 1 through screws, the supports 3 are used for supporting and fixing the drawing board 1, and rotating mechanisms 4 are mounted on the left sides of the upper end and the lower end of the rear side of the drawing board 1;

the rotating mechanism comprises a shell 401, a round rod 402, a clamping groove 403, a rotating shaft 404, a sleeve 405, a tooth groove 406, a gear 407, a first spring 408, a bump 409, a cover plate 410 and a support plate 411;

one end of a round rod 402 is welded on the outer wall of the shell 401, the other end of the round rod 402 is fixedly connected with the rear side of the drawing board 1, clamping grooves 403 are formed in the bottom end of the inner wall of the shell 401 along the circumferential direction, the gear 407 is axially braked by the matching of the clamping grooves 403 and the convex blocks 409, the outer ring of a bearing is fixedly connected at the center position of the bottom end of the inner cavity of the shell 401, a rotating shaft 404 is in interference fit with the inner ring of the bearing, a sleeve 405 and a supporting plate 411 can synchronously rotate through the rotating shaft 404, the outer wall of the rotating shaft 404 is sleeved with the gear 407 inserted into the inner cavity of the shell 401, the convex blocks 409 which are symmetrical in the front and back are stamped on the lower surface of the gear 407, the convex blocks 409 are inserted into the inner cavity of the clamping grooves 403 to brake the gear 407, a first spring 408 inserted into the inner cavity of the gear 407 is sleeved at the bottom of, the external force is removed and the external force is restored to the initial state, the first spring 408 exerts downward elastic force on the gear 407 under the self elastic force, the stability between the convex block 409 and the clamping groove 403 is improved, the sleeve 405 inserted into the inner cavity of the shell 401 is in interference fit with the middle part of the outer wall of the rotating shaft 404, the top end of the first spring 408 is in contact with the top end of the inner cavity of the sleeve 405, the tooth socket 406 is formed in the inner wall of the sleeve 405, the outer wall of the gear 407 is inserted into the inner cavity of the tooth socket 406, the gear 407 is limited through the tooth socket 406, the gear 407 is ensured to have up-and-down movement capacity, the top end of the shell 401 is in screwed connection with the cover plate 410, the cover plate 410 not only seals the shell 401, but also can control the rotating shaft 404, the top end;

the shading mechanism 5 comprises a U-shaped frame 501, a first shading plate 502, a slideway 503, an arc-shaped groove 504, a second shading plate 505, a circular groove 506, a second spring 507, a steel ball 508 and a handle 509;

the right side of the U-shaped frame 501 is fixedly connected with the left side of the supporting plate 411, the front side of the inner cavity of the U-shaped frame 501 is provided with a first light shielding plate 502, the first light shielding plate 502 is matched with a second light shielding plate 505 to shield sunlight, so that the phenomenon that the sunlight irradiates on the drawing board 1 to reflect light is avoided, the left inner wall and the right inner wall of the U-shaped frame 501 are both provided with a slide 503 at the rear side of the first light shielding plate 502, the second light shielding plate 505 has up-down movement capability through the limit of the slide 503, the inner side of the inner wall of the slide 503 is both provided with an arc-shaped groove 504 from top to bottom, the inner cavity of the slide 503 is spliced with the second light shielding plate 505 capable of up-down movement, the bottom ends of the left side wall and the right side wall of the second light shielding plate 505 are both provided with a circular groove 506, the inner cavity of the circular groove 506 is respectively spliced with a, after the external force is removed, the steel ball 508 is restored to the initial state, the second spring 507 provides an elastic force moving outwards for the steel ball 508, the inner cavity of the circular groove 506 extending out of the outer wall of the steel ball 508 is inserted into the arc-shaped groove 504, and the handle 509 is connected to the center of the top end of the second shading plate 505 through a screw.

Preferably, the number of the slots 403 is eighteen, and the eighteen slots 403 are distributed at the bottom end of the inner cavity of the housing 401 every 20 degrees clockwise, so that the supporting plate 411 can be rotationally fixed at a minimum unit of 20 degrees through the plurality of slots 403, fine rotation of the supporting plate 411 can be realized, and the light shielding mechanism 5 can rotate along with the sunlight irradiation angle.

Preferably, the sum of the heights of the gear 407 and the protrusion 409 is less than the height of the inner cavity of the sleeve 405, so that the gear 407 has enough space in the sleeve 405 to move upward, and the protrusion 409 can be disengaged from the slot 403.

As a preferable scheme, further, the plurality of arc-shaped grooves 504 are arranged on the inner side of the inner wall of the slide 503 at intervals from top to bottom, and the distance between every two adjacent arc-shaped grooves 504 is 5cm, so that the second light shielding plate 505 can move up and down and be positioned with a minimum unit of 5cm, and the matching light shielding of the second light shielding plate 505 and the first light shielding plate 502 is facilitated.

Preferably, the diameter of the opening of the circular groove 506 is smaller than the diameter of the steel ball 508, and the length of the steel ball 508 extending out of the inner cavity of the circular groove 506 is smaller than the radius of the steel ball 508 itself, so that the steel ball 508 is prevented from being separated from the circular groove 506, the steel ball 508 is ensured to be completely controlled by the circular groove 506, and when the second shielding plate 505 moves up and down, the steel ball 508 can automatically move into the circular groove 506 under the blocking of the arc-shaped groove 504.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

A teacher performs drawing teaching through the drawing board 1, the dust collection groove 2 can collect dropped chalk dust to reduce the difficulty of cleaning, when light shielding is needed, the support plate 411 can be pulled according to the sunlight irradiation angle to drive the rotating shaft 404 to drive the sleeve 405 to rotate clockwise or anticlockwise, meanwhile, the gear 407 synchronously rotates along with the sleeve 405, the projection 409 can move upwards under the blocking of the clamping groove 403, the gear 407 moves upwards under the limiting action of the tooth groove 406 to extrude the first spring 408, automatic separation of the projection 409= and the clamping groove 403 is realized, when the light shielding mechanism 5 swings to a proper angle, the first spring 408 pushes the gear 407 downwards under the self elastic force action, so that the projection 409 is inserted into the clamping groove 403 at a corresponding position to brake the gear 407, the position adjustment of the light shielding mechanism 5 is realized, the second light shielding plate 505 can be lifted upwards through the handle 509, the steel ball 508 rolls towards the circular groove 506 and extrudes the second spring 507 under the blocking of the arc-shaped groove 504, realize steel ball 508 and arc wall 504's automation and break away from, adjust to the position that covers sunshine when second light screen 505 after, second spring 507 promotes steel ball 508 under self spring action and moves in the arc wall 504 of inserting corresponding position to the outside, second light screen 505 braking after the removal, realize the shading through the cooperation of first light screen 502 and second light screen 505 to drawing board 1, thereby avoid drawing board 1 to appear the problem of reflection of light, ensure that the student of optional position can both see model and characters on the drawing board 1 clearly in the teacher, student's efficiency of listening has been guaranteed, more do benefit to the popularization.

In the description of the present invention, it is to be understood that the terms "bottom", "one end", "middle", "other end", "upper", "top", "inner", "front", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation; unless otherwise specifically stated or limited, the terms "mounting," "screw-fastening," "opening," "inserting," "engaging," "stamping," "interference-fitting," "fixed-fastening," and the like are to be construed broadly, e.g., as a fixed-fastening, a detachable-fastening, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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. A graphic presentation board for mathematical modeling, comprising a drawing board (1), characterized in that: the bottom end of the front side of the drawing board (1) is connected with an ash collecting groove (2) through a screw, the left side and the right side of the bottom end of the drawing board (1) are connected with brackets (3) through screws, and the left sides of the upper end and the lower end of the rear side of the drawing board (1) are provided with rotating mechanisms (4);

the rotating mechanism comprises a shell (401), a round rod (402), a clamping groove (403), a rotating shaft (404), a sleeve (405), a tooth groove (406), a gear (407), a first spring (408), a bump (409), a cover plate (410) and a supporting plate (411);

the outer wall of the shell (401) is welded with one end of a round rod (402), the other end of the round rod (402) is fixedly connected with the rear side of the drawing board (1), clamping grooves (403) are formed in the bottom end of the inner wall of the shell (401) along the circumferential direction, the center of the bottom end of the inner cavity of the shell (401) is fixedly connected with an outer ring of a bearing, the inner ring of the bearing is in interference fit with a rotating shaft (404), a gear (407) spliced with the inner cavity of the shell (401) is sleeved on the outer wall of the rotating shaft (404), front and back symmetrical convex blocks (409) are stamped on the lower surface of the gear (407), the convex blocks (409) are spliced with the inner cavity of the clamping grooves (403) to brake the gear (407), a first spring (408) spliced with the inner cavity of the gear (407) is sleeved on the bottom of the outer wall of the rotating shaft (404), and a sleeve (405) spliced with the inner cavity, the top end of the first spring (408) is in contact with the top end of an inner cavity of the sleeve (405), a tooth groove (406) is formed in the inner wall of the sleeve (405), the outer wall of the gear (407) is inserted into the inner cavity of the tooth groove (406), a cover plate (410) is connected to the top end of the shell (401) through a screw, the top end of the rotating shaft (404) extends out of the upper surface of the cover plate (410) to be fixedly connected with one end of the supporting plate (411), and the other end of the supporting plate (411) is provided with a shading mechanism (5);

the shading mechanism (5) comprises a U-shaped frame (501), a first shading plate (502), a slide way (503), an arc-shaped groove (504), a second shading plate (505), a circular groove (506), a second spring (507), a steel ball (508) and a handle (509);

the right side of the U-shaped frame (501) is fixedly connected with the left side of the supporting plate (411), a first shading plate (502) is arranged on the front side of the inner cavity of the U-shaped frame (501), the left and right inner walls of the U-shaped frame (501) are both arranged at the rear side of the first shading plate (502) and are provided with slideways (503), the inner side of the inner wall of the slide way (503) is provided with arc-shaped grooves (504) from top to bottom, a second shading plate (505) which can move up and down is inserted into the inner cavity of the slideway (503), the bottom ends of the left side wall and the right side wall of the second shading plate (505) are both provided with circular grooves (506), a second spring (507) and a steel ball (508) are respectively inserted into the inner cavity of the circular groove (506) from inside to outside, the outer wall of the steel ball (508) extends out of the inner cavity of the circular groove (506) to be inserted with the arc-shaped groove (504), the handle (509) is screwed at the center of the top end of the second shading plate (505).

2. The graphic presentation board for mathematical modeling according to claim 1, wherein: the quantity of draw-in groove (403) is eighteen, and eighteen draw-in grooves (403) are according to clockwise every 20 degrees distribution at the inner chamber bottom of shell (401).

3. The graphic presentation board for mathematical modeling according to claim 1, wherein: the sum of the heights of the gear (407) and the projection (409) is less than the height of the inner cavity of the sleeve (405).

4. The graphic presentation board for mathematical modeling according to claim 1, wherein: the arc-shaped grooves (504) are arranged on the inner side of the inner wall of the slide way (503) from top to bottom in a clearance mode, and the distance between every two adjacent arc-shaped grooves (504) is 5 cm.

5. The graphic presentation board for mathematical modeling according to claim 1, wherein: the diameter of the opening of the circular groove (506) is smaller than that of the steel ball (508), and the length of the steel ball (508) extending out of the inner cavity of the circular groove (506) is smaller than the radius of the steel ball.