CN209895506U

CN209895506U - Auxiliary memory device for mathematical formula

Info

Publication number: CN209895506U
Application number: CN201920271858.XU
Authority: CN
Inventors: 唐风军; 薛春玲; 张利利; 孙贵玲
Original assignee: Huanghe Science and Technology College
Current assignee: Huanghe Science and Technology College
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-01-03
Anticipated expiration: 2029-03-05

Abstract

The utility model provides a mathematical formula auxiliary memory device, which effectively solves the problems that the enthusiasm is not high, the operation is complicated and the self-detection can not be carried out for the memory score when the students memorize and study the mathematical formula at present; the technical scheme comprises the following steps: the formula that will distribute scattered is write on the memory stock form in unison, let students remember study, and rotate through two pivots and drive the memory stock form and rotate around two drums, the formula that students remembered rotates along with the pivot, and then the memory stock form that will write these formulas is packed up and twines on one of them drum, thereby will be located the new public notice that does not remember study on another drum and accompany the removal of memory stock form, show students, shelter from formula (or formula name) through removing one of them clipboard, make the student write formula name (or formula) in one's memory on another clipboard, with the study memory effect of inspection student.

Description

Auxiliary memory device for mathematical formula

Technical Field

The utility model relates to a mathematical education equipment technical field specifically is a supplementary memory device of mathematical formula.

Background

Mathematics, a subject of studying concepts such as quantity, structure, change, space and information, belongs to a form science from a certain angle, when contacting a class of mathematics, a plurality of formulas of the mathematics can not be remembered by a plurality of beginners, the learning process of the mathematics is relatively boring, especially, a plurality of mathematical formulas need to be memorized, and the mathematical formulas on the class book are basically dispersed in different chapters of the book, so that students need to learn and memorize the formulas one by one to search the mathematical formulas in different chapters, the memory process of the formulas is very complicated and troublesome, most students often can not pay enough patience to memorize the formulas, and most auxiliary memory devices of the mathematical formulas at present do not have the function of self-testing the students, so that the learning effect of the students can not be detected, the learning condition of the student cannot be clearly mastered and known, and the teaching of the teacher is not facilitated, so that a device capable of learning and memorizing the mathematical formula conveniently and rapidly is urgently needed to increase the enthusiasm of the student in memorizing the formula and test and check the learning effect of the student; furthermore, the existing auxiliary memory device for mathematical formulas does not have the function of height adjustment, and the height of the auxiliary memory device for mathematical formulas cannot be adjusted according to the height of a teacher when the auxiliary memory device for mathematical formulas is used, so that the auxiliary memory device for mathematical formulas is inconvenient for a user to use, and the quality of class lessons is reduced.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned condition, for overcoming prior art's defect, the utility model provides a memory device is assisted to mathematical formula, the better student who has solved present ubiquitous of this memory device is not highly and can not carry out the problem of test to student's study achievement when studying memory to mathematical formula, write on the stock form and be fixed in two live-rollers respectively with the stock form both ends through the mathematical formula with the zero-fall dispersion on textbook in unison, drive arrangement drive live-roller rotates and then drives the stock form and remove to the formula that will write on the stock form demonstrates study memory to students.

The specific technical scheme is as follows:

an auxiliary memory device for mathematical formulas comprises a box body and is characterized in that rotary rollers are respectively rotatably arranged at the two transverse ends in the box body, memory roll paper is fixedly wound on the two rotary rollers through a pressing device, the upper ends of the two rotary rollers are driven by a driving motor arranged on the inner top wall of the box body through a belt pulley group, rectangular slideways are respectively arranged at the two transverse ends of one longitudinal side of the box body, and writing boards are transversely matched in the rectangular slideways in a sliding manner, the box sliding fit has writing board one side horizontal both ends to be equipped with respectively and keeps away from memory stock form one side rotation with first rectangular hole and the first rectangular hole of rectangle slide intercommunication and installs the rotor plate, and the rotor plate is arranged in and is connected with the brush board between two diapalls about the downthehole one end of first rectangular hole vertically sliding between, rotate on the brush board install and the rotor plate between be screw-thread fit's bolt, the bottom half is connected with elevating gear and elevating gear sets up on portable base.

Preferably, the rotating roller is a rotating shaft which is rotatably arranged between the upper bottom wall and the lower bottom wall of the box body, an inherent cylinder is sleeved on the rotating shaft, an inherent first belt pulley is sleeved on the upper end of the rotating shaft, an inherent second belt pulley is sleeved on an output shaft of a driving motor which is arranged on the inner top wall of the box body, the two first belt pulleys and the second belt pulley enclose a triangle, and the three are connected through belts.

Preferably, closing device is including setting up the arc wall that just extends along drum length direction on the excircle face of drum, set up on one of them lateral wall in both ends about the arc wall and be provided with rather than matched with arc piece in first round hole and the arc wall, set up on the arc piece with first round hole matched with second round hole, sliding fit has reference column and reference column to wear out first round hole one end and insert and in the second round hole, the reference column is arranged in first round hole in one end an organic whole be connected with vertical extension's driving lever and upwards wear out the drum, be equipped with on the drum with driving lever sliding fit and with the second rectangular hole of first round hole intercommunication, the reference column is arranged in first round hole in one end be connected with first spring and the first spring other end connect on first round hole diapire.

Preferably, one side of each of the two opposite rotating plates is provided with a first positioning hole, a second positioning hole matched with the first positioning hole is formed in the side wall of the corresponding first rectangular hole of the first positioning hole, a positioning plate is arranged in the second positioning hole in a sliding fit mode and penetrates out of one end of the second positioning hole to be inserted into the first positioning hole, one end of the positioning plate, which is arranged in the second positioning hole, is connected with a second spring, the other end of the second spring is connected to the bottom wall of the second positioning hole, one end of the positioning plate, which is arranged in the second positioning hole, is connected with a first shifting plate extending perpendicular to the positioning plate, the first shifting plate penetrates out of the second positioning hole, and a third rectangular hole, which is arranged on the side wall of the second positioning hole, is far away.

Preferably, the horizontal both sides of box roof are equipped with the rectangular cavity who is equipped with on the locking hole and the box roof of vertical extension respectively and communicate with the locking hole, sliding fit has unblock post and arranges the rectangular cavity in one end be connected with rectangular cavity inner wall sliding fit's rectangular plate in, the horizontal both sides of rectangular plate diapire are connected with third spring and two third bullet other ends and connect in the box roof, the horizontal one side of rectangular cavity is equipped with the fourth rectangular hole, rectangular plate an organic whole be connected with fourth rectangular hole sliding fit's second dial board and second dial the board and outwards wear out the rectangular cavity through the fourth rectangular hole, the clipboard top is equipped with vertical sliding fit in third circular hole and the third circular hole and has the locking post, be connected with the fourth spring between locking post and the third circular hole bottom wall.

Preferably, the lifting device comprises a thread cylinder fixedly connected with the bottom wall of the box body and a lifting screw rod matched with the base in a rotating mode, the base is internally provided with a lifting motor and the lifting screw rod are connected with an output shaft of the lifting motor, the two transverse sides of the bottom wall of the box body are fixedly provided with a limiting cylinder and a limiting column matched with the limiting cylinder in a vertical sliding mode, and the lower end of the base is provided with a universal wheel with a self-locking function.

(1) The auxiliary memory device for the mathematical formula well solves the problems that various inconvenient factors (the mathematical formula is scattered and distributed in each chapter in a book and is complex to find when in memory learning) exist when students commonly memorize and learn the mathematical formula at present, so that the enthusiasm of the students for memorizing the formula is low, the students can memorize and learn the formula by uniformly writing the scattered and distributed formula on the memory roll paper and corresponding the formula and the formula name one to one, and the memory roll paper is driven to rotate around the two cylinders by the rotation of the two rotating shafts, so that the page turning function is realized (the formula memorized by the students rotates along with the rotating shafts, the memory roll paper written with the formulas is folded and wound on one cylinder, so that a new presentation which is positioned on the other cylinder and is not memorized and learned is accompanied with the movement of the memory roll paper, the students are shown) and can be tested on site after the students memorize and learn the formulas, the formulas (or the formula names) can be shielded by moving one of the writing boards, so that the students can memorize the formula names (or the formulas) on the other writing board to check the learning and memorizing effect of the students;

(2) better, we still are equipped with the wiping arrangement who is used for cleaning the clipboard in the horizontal both sides of box front end, after the student has carried out the self-test, we make the characters content on the clipboard clean by wiping arrangement through along the lateral shifting clipboard, and this wiping arrangement covers the clipboard completely and only needs the pulling clipboard alright clean completely with the content on the clipboard, moreover, the box lower extreme still is equipped with elevating gear, the teacher of giving lessons (imparting knowledge to students) or student (carrying out the self-test and using) that can satisfy different heights.

Drawings

FIG. 1 is a schematic structural view of the writing board of the present invention when opened;

FIG. 2 is a schematic structural view of the writing board of the present invention when closed;

FIG. 3 is a schematic view of another perspective structure of the writing board of the present invention when opened;

FIG. 4 is a schematic view of the first positioning hole and the positioning plate when the rotating plate of the present invention is opened;

FIG. 5 is a schematic view showing the relationship between the brush plate and the rotating plate when the rotating plate of the present invention is opened;

FIG. 6 is a schematic view showing the fitting relationship between the rotating plate, the brush plate, the positioning plate and the first shifting plate when the rotating plate is opened according to the present invention;

FIG. 7 is a schematic view showing the relationship between the rotating shaft, the cylinder and the arc-shaped block;

FIG. 8 is a schematic view of the fitting relationship between the unlocking post and the locking post of the present invention;

FIG. 9 is a schematic view showing the fitting relationship between the rectangular cavity, the second shifting plate and the fourth rectangular hole of the present invention;

FIG. 10 is a schematic view showing the relationship between two cylinders and the memory roll paper and the pulley set of the present invention;

fig. 11 is an enlarged schematic view of the structure (pressing device) at a position a of the present invention;

fig. 12 is a schematic view of the matching relationship between the positioning post and the second circular hole after the arc-shaped block of the present invention is partially cut away;

FIG. 13 is a schematic structural view of the present invention after the arc block and the arc groove are separated;

FIG. 14 is a schematic diagram of the writing board of the present invention when the formula name side is hidden;

fig. 15 is a schematic diagram of the writing board of the present invention when the writing board blocks one side of the formula.

In the figure 1: the device comprises a box body 1, a rotating roller 2, a memory roll paper 3, a driving motor 4, a rectangular slideway 5, a writing board 6, a first rectangular hole 7, a rotating plate 8, a brush board 9, a bolt 10, a base 11, a rotating shaft 12, a cylinder 13, a first belt pulley 14, a second belt pulley 15, a belt 16, an arc-shaped groove 17, a first round hole 18, an arc-shaped block 19, a second round hole 20, a positioning column 21, a deflector rod 22, a second rectangular hole 23, a first spring 24, a first positioning hole 25, a second positioning hole 26, a positioning plate 27, a second spring 28, a first shifting plate 29, a third rectangular hole 30, a locking hole 31, a rectangular cavity 32, an unlocking column 33, a rectangular plate 34, a third spring 35, a fourth rectangular hole 36, a second shifting plate 37, a third round hole 38, a locking column 39, a fourth spring 40, a threaded barrel 41, a lifting screw 42, a lifting screw 43, a limiting barrel 44, a limiting column 45 and a universal wheel 46, a handle 47 and a lifting motor 48.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 15. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

A mathematic formula auxiliary memory device comprises a box body 1 and is characterized in that the transverse two ends in the box body 1 are respectively rotatably provided with a rotating roller 2, the two rotating rollers 2 are fixedly wound with memory roll paper 3 through a pressing device, the upper ends of the two rotating rollers 2 are driven by a driving motor 4 arranged on the inner top wall of the box body 1 through a belt 16 wheel group, the longitudinal side and the transverse side of the box body 1 are respectively provided with a rectangular slideway 5, a writing board 6 is transversely matched in the rectangular slideway 5, the transverse side and the transverse side of the box body 1 are respectively provided with a first rectangular hole 7 communicated with the rectangular slideway 5, the first rectangular hole 7 is far away from one side of the memory roll paper 3 and is rotatably provided with a rotating plate 8, the rotating plate 8 is arranged in the first rectangular hole 7, the longitudinal sliding connection between the upper bottom wall and the lower bottom wall of one end of the first rectangular hole 7 is provided with a brush plate 9, a bolt 10 which is, the bottom of the box body 1 is connected with a lifting device which is arranged on a movable base 11.

When the embodiment is used, the utility model provides a mathematical formula auxiliary memory device, which better solves the various inconvenient factors existing when the students commonly exist at present memorize and learn the mathematical formula (the mathematical formula is distributed in each chapter in the book in a scattered way, the searching is tedious when memorizing and learning, thereby causing the enthusiasm of the students to memorize the formula is not high, and the memory efficiency of the students to the mathematical formula is greatly reduced), the students memorize and learn the formula by uniformly writing the publicity of the scattered distribution on the memory roll paper 3 and corresponding the formula and the formula name one by one, and the students can memorize and learn, and drive the memory roll paper 3 to rotate around the rotating roller 2 by rotating the two rotating rollers 2, thereby realizing the page turning function (the formula memorized by the students rotates along with the rotating roller 2, and then the memory roll paper 3 written with the formulas is wound on one of the rotating rollers 2, therefore, the new bulletin which is positioned on the other rotating roller 2 and is not subjected to memory learning is gradually displayed and memorized to the students along with the movement of the memory roll paper 3, all the formulas are picked up and copied on the memory roll paper 3, the time for the students to go to each chapter in the book independently to search for the formulas is saved, and the enthusiasm of the students is improved; the rotating rollers 2 arranged at the two transverse ends in the box body 1 are driven by a driving motor 4 arranged on the top wall in the box body 1 through a belt 16 wheel group (the rotating speed of the driving motor 4 is adjusted through setting control system parameters to enable the driving motor 4 to be in a slow rotating state, so that the memory roll paper 3 slowly rotates around the two rotating rollers 2, and the driving motor 4 is connected with an external power supply through a lead), and further the memory roll paper 3 is driven to rotate around the rotating rollers 2, so that the memory roll paper 3 is released by the rotating rollers 2 on one transverse side, the memory roll paper 3 is wound and collected by the rotating rollers 2 on the other transverse side, and formulas on the memory roll paper 3 are gradually displayed to students to enable the students to learn and memorize; the rectangular slide rails 5 are respectively arranged at the two transverse ends of one longitudinal side of the box body 1, the writing boards 6 are transversely matched in the rectangular slide rails 5 in a sliding manner, when the two writing boards 6 are in a closed state, the memory roll paper 3 in the box body 1 is completely shielded, and the states shown in the attached figures 14 and 15 can be referred to, when a student memory result needs to be tested, the student moves one of the writing boards 6 to shield a formula (or formula name), so that the student writes formula names (or formulas) on the other writing board 6 implicitly, namely, the student can write the corresponding names of the unhindered formulas on the other writing board 6 implicitly, or the student reads the unhindered formula names on the other writing board 6 implicitly, so as to test the learning and memory effects of the student;

a first rectangular hole 7 is further formed in the two transverse sides of the front end of a box body 1, the first rectangular hole 7 is communicated with a corresponding rectangular slide way 5, a rotating plate 8 is rotatably installed in the first rectangular hole 7, a brush plate 9 is longitudinally connected to one side, arranged in the first rectangular hole 7, of the rotating plate 8 in a sliding mode, a brush is arranged on the brush plate 9 and can wipe the content, which is written by students, of a writing board 6 sliding in the rectangular slide way 5, a bolt 10 is rotatably installed on the brush plate 9, the bolt 10 is in threaded fit with the rotating plate 8, the brush plate 9 can be adjusted through screwing the bolt 10 (namely the distance between the brush and the writing board 6 is ensured, the brush can be abutted against the writing board 6 to wipe the content on the writing board 6 completely, and the phenomenon that a gap exists between the brush and the writing board 6 due to serious abrasion of the brush caused by long service time does not occur all the time, the height of the box body 1 can be adjusted by connecting the lifting device to the bottom of the box body 1, so that students with different heights can adjust the box body 1 to a height suitable for the height of the box body 1 to write silently when performing the dictation test, and the bottom of the lifting device is arranged on the movable base 11, so that the device is higher in flexibility.

Embodiment 2, on the basis of embodiment 1, the rotating roller 2 is a rotating shaft 12 rotatably installed between the upper and lower bottom walls of the box body 1, and a cylinder 13 is fixed on the rotating shaft 12, a first belt pulley 14 is fixed on the upper end of the rotating shaft 12, a second belt pulley 15 is fixed on the output shaft of the driving motor 4 arranged on the inner top wall of the box body 1, and the two first belt pulleys 14 and the second belt pulley 15 enclose a triangle and are connected through a belt 16.

When the embodiment is used, the rotating roller 2 comprises a rotating shaft 12 which is rotatably arranged between the upper bottom wall and the lower bottom wall of the box body 1, a cylinder 13 is fixedly sleeved on the rotating shaft 12, a first belt pulley 14 is fixedly sleeved on the upper end of the rotating shaft 12, a second belt pulley 15 is fixedly sleeved on an output shaft of a driving motor 4 which is arranged on the top wall of the box body 1, the two first belt pulleys 14 and the second belt pulley 15 enclose a triangle and are connected together by a belt 16, the output shaft of the driving motor 4 drives the second belt pulley 15 to rotate and drives the two first belt pulleys 14 which are positioned at the two transverse sides to rotate through the belt 16 so as to drive the rotating shaft 12 to rotate, thereby driving the two rotating shafts 12 to rotate counterclockwise or clockwise along the same direction, realizing that one cylinder 13 releases the memory roll paper 3 and the other cylinder 13 winds and collects the memory roll paper 3, so that the formulas and the formula names on the memory roll paper 3 are gradually shown to students.

Embodiment 3, based on embodiment 1, the pressing device comprises an arc-shaped slot 17 arranged on the outer circumferential surface of the cylinder 13 and extending along the length direction of the cylinder 13, one of the side walls of the upper end and the lower end of the arc-shaped groove 17 is provided with a first round hole 18, an arc-shaped block 19 matched with the first round hole is arranged in the arc-shaped groove 17, a second round hole 20 matched with the first round hole 18 is arranged on the arc-shaped block 19, a positioning column 21 is arranged in the first round hole 18 in a sliding fit mode, penetrates out of one end of the first round hole 18, penetrates out of one end of the second round hole 20, the positioning column 21 is arranged in the first round hole 18, one end of the positioning column is integrally connected with a vertical extending shifting rod 22, the shifting rod 22 penetrates out of the cylinder 13 upwards, a second rectangular hole 23 which is in sliding fit with the shifting rod 22 and is communicated with the first round hole 18 is arranged on the cylinder 13, one end of the positioning column 21 in the first round hole.

This embodiment will be described in detail below as to how the pressing means fixes the memory roll paper 3 to the cylinder 13 when in use; specifically, an arc-shaped groove 17 is formed in the outer circumferential surface of the cylinder 13, an arc-shaped block 19 matched with the arc-shaped groove 17 is arranged in the arc-shaped groove 17, the arc-shaped groove 17 completely penetrates through the cylinder 13 (the length of the arc-shaped groove 17 is the same as that of the cylinder 13), firstly, a formula and a formula name corresponding to the formula name are written on the memory roll paper 3 (referring to the attached drawing 1, the formula and the formula name corresponding to the formula name form a memory unit), a plurality of memory units are distributed on the memory roll paper 3, the memory roll paper 3 displays different memory units to students along with the rotation of the cylinder 13, firstly, one end of the memory roll paper 3 with the plurality of memory units is fixed on one cylinder 13, specifically, the arc-shaped block 19 is withdrawn from the arc-shaped groove 17, and a positioning column 21 inserted into a second circular hole 20 is withdrawn from the second circular hole 20 by pulling rods 22 positioned at the upper end and the lower end of the cylinder 13, the arc-shaped block 19 is in a free state, the arc-shaped block 19 is taken away from the arc-shaped groove 17, the free end of the memory roll paper 3 is put into the arc-shaped groove 17 and then extends out of the arc-shaped groove 17 from the other side of the arc-shaped groove 17, the arc-shaped block 19 is placed in the arc-shaped groove 17, the arc-shaped block 19 firmly presses the memory roll paper 3 passing through the arc-shaped groove 17, the memory roll paper 3 extending out of the other side of the arc-shaped groove 17 is wound around the cylinder 13, the cylinder 13 can be driven to rotate by the driving motor 4 so as to completely wind the memory roll paper 3 on the cylinder 13 (shown in figure 11), the memory roll paper 3 is not completely wound on the cylinder 13 when the memory roll paper is wound, a part of the memory roll paper is wound on the other cylinder 13 positioned at the transverse side, and the deflector rod 22 on the other cylinder 13 is also pulled so that the arc-shaped block 19 is withdrawn from the arc-shaped groove 17, put into arc wall 17 with memory stock form 3 another free end and make the memory stock form 3 of putting into in the arc wall 17 stretch out from arc wall 17 opposite side, we place arc piece 19 in arc wall 17 this moment and realize the effect of tightly squeezing memory stock form 3 in arc wall 17, the condition after the installation can refer to the state that figure 10 shows, we rotate along the syntropy through two pivot 12 of driving motor 4 drive, thereby realize that one of them drum 13 will remember that stock form 3 releases another drum 13 and pack up the winding to memory stock form 3, thereby will write different memory cell on memory stock form 3 and demonstrate to the student step by step, supply the student to remember.

In embodiment 4, based on embodiment 1, the opposite sides of the two rotating plates 8 are provided with first positioning holes 25, the side walls of the first positioning holes 25 and the corresponding first rectangular holes 7 are provided with second positioning holes 26 matched with the first positioning holes 25, the second positioning holes 26 are slidably matched with positioning plates 27, one ends of the positioning plates 27, which penetrate through the second positioning holes 26, are inserted into the first positioning holes 25, the positioning plates 27 are disposed at one ends of the second positioning holes 26 and connected with second springs 28, the other ends of the second springs 28 are connected to the bottom walls of the second positioning holes 26, one ends of the positioning plates 27, which are disposed at the second positioning holes 26, are connected with first dial plates 29 extending perpendicularly to the positioning plates 27, the first dial plates 29 penetrate out of the second positioning holes 26, and one side wall of the second positioning holes 26, which is far away from the memory roll paper 3, is provided with third rectangular holes 30 slidably matched with the first dial plates 29 and communicated with.

In the use of this embodiment, preferably, a device for positioning the rotating plate 8 is disposed on the side wall of the first rectangular hole 7 to achieve the effect of fixing the rotating plate 8, a first positioning hole 25 is disposed on one side of the two rotating plates 8 facing each other, a second positioning hole 26 is disposed on the side wall of the first rectangular hole 7 and is matched with the first positioning hole 25, a positioning plate 27 is slidably fitted in the second positioning hole 26, the positioning plate 27 extends out of the second positioning hole 26 and extends out of one end of the first positioning hole 25, when the brush disposed on the brush plate 9 is worn seriously due to long use and needs to be replaced, referring to fig. 4, the user pulls the first shifting plate 29 rightwards along the third rectangular hole 30 to withdraw the positioning plate 27 fixedly connected with the first shifting plate from the first positioning hole 25 disposed on the rotating plate 8, and then the rotating plate 8 is in a free state, the rotating plate 8 is opened by pulling the bolt 10, and the brush plate 9 longitudinally connected between the upper bottom wall and the lower bottom wall of the rotating plate 8 in a sliding manner is in front of the rotating plate, so that a brush arranged on the brush plate 9 can be replaced; when the brush is used for a long time, the brush wipes the content on the writing board 6, the chalk powder inevitably falls onto the bottom wall of the first rectangular hole 7, the rotating plate 8 can be opened periodically to clean the chalk powder falling into the first rectangular hole 7, and the distance between the brush plate 9 and the writing board 6 corresponding to the brush plate can be adjusted by screwing the bolt 10, when the brush is used for a long time, there is a possibility that abrasion may cause a gap between the brush and the writing board 6, the brush may not be closely attached to the writing board 6, thereby affecting the wiping effect, the brush plate 9 slides longitudinally along the upper and lower bottom walls of the rotating plate 8 by screwing the bolts 10, thereby changing the distance between the brush plate 9 and the writing board 6 corresponding thereto, so that the brush provided on the brush plate 9 is always closely attached to the writing board 6.

Embodiment 5, on the basis of embodiment 1, the horizontal both sides of box 1 roof are equipped with the rectangular cavity 32 that is equipped with on the locking hole 31 and the box 1 roof of vertical extension respectively, sliding fit has unblock post 33 and unblock post 33 to arrange in rectangular cavity 32 one end be connected with rectangular cavity 32 inner wall sliding fit's rectangular plate 34 in the locking hole 31, the horizontal both sides of rectangular plate 34 diapire are connected with third spring 35 and two third bullet other ends are connected in the box 1 roof, the horizontal one side of rectangular cavity 32 is equipped with fourth rectangular hole 36, rectangular plate 34 an organic whole be connected with fourth rectangular hole 36 sliding fit's second dial plate 37 and second dial plate 37 outwards wear out rectangular cavity 32 through fourth rectangular hole 36, the top of clipboard 6 is equipped with third circular hole 38 and vertical sliding fit has locking column 39 in the third circular hole 38, be connected with fourth spring 40 between locking column 39 and the third circular hole 38 diapire.

In the embodiment, as shown in fig. 8, preferably, we have locking holes 31 at two ends of the top wall of the box body 1, and unlocking posts 33 are slidably fitted in the locking holes 31, when we open the writing board 6 (preferably, we have handles 47 on the writing board 6, which can be used conveniently until the writing board 6 is opened or closed), the writing board 6 slides along the corresponding rectangular slide way 5, we have a third circular hole 38 at the upper end of the writing board 6, and a locking post 39 is fitted in the third circular hole 38, when the writing board 6 slides to the state shown in fig. 8 (the third circular hole 38 and the locking hole 31 are just in the corresponding state), the locking post 39 is bounced into the locking hole 31 under the action of a fourth spring 40 and just abuts against the bottom of the unlocking post 33 fitted in the locking hole 31, so as to realize the positioning of the writing board 6, and better prevent the formula from being shown to students, the box body 1 is vibrated to lead the writing board 6 to shake back and forth in the rectangular slideway 5, the image students learn and memorize the formula, when the writing board 6 needs to be closed, the second shifting board 37 is shifted downwards along the fourth rectangular hole 36 to drive the rectangular board 34 to slide downwards along the rectangular cavity 32, the unlocking column 33 is driven to downwards extrude the locking column 39 inserted in the locking hole 31, the unlocking column 33 is set to completely extrude the locking column 39 out of the locking hole 31 and the lower end face of the unlocking column 33 is just equal to the lower end face of the locking hole 31 when the second shifting board 37 slides downwards along the fourth rectangular hole 36 to lead the second shifting board 37 to slide to the bottom wall of the fourth rectangular hole 36, at the moment, the two writing boards 6 are manually pushed to be closed, and after the second shifting board 37 is released, the rectangular board 34 is restored to the initial state under the action of the two third springs 35.

Embodiment 6, on the basis of embodiment 1, elevating gear includes that the screw thread section of thick bamboo 41 and the screw thread section of thick bamboo 41 fit in with 1 diapire fixed connection of box have with base 11 normal running fit's lifting screw 43, be equipped with lifting motor 48 and lifting screw 43 and lifting motor 48 output shaft in the base 11, the horizontal both sides of 1 diapire of box are fixed with spacing section of thick bamboo 44 and are equipped with on the base 11 with spacing post 45 of the vertical sliding fit of spacing section of thick bamboo 44, and the base 11 lower extreme is provided with universal wheel 46 that has self-locking function.

When the embodiment is used, we are fixed with a screw thread section of thick bamboo 41 and a screw thread section of thick bamboo 41 cooperation in box 1 bottom and rotate the lifting screw 43 of installing on base 11, lifting screw 43 is driven by the elevator motor 48 who sets up in base 11 (elevator motor 48 is connected with external power supply through the wire), the horizontal both sides of box 1 are fixed with spacing section of thick bamboo 44 and spacing section of thick bamboo 44 cooperation has the spacing post 45 that is fixed in on base 11, spacing post 45 can satisfy with the cooperation of spacing section of thick bamboo 44: when the lifting motor 48 drives the lifting screw 43 to rotate, the box body 1 is vertically moved through the matching of the lifting screw 43 and the thread cylinder 41, and then the height of the box body 1 is adjusted, so that the use of different users is met, and the universal wheel 46 with the self-locking function is arranged on the base 11, so that the device is more convenient to move and higher in flexibility.

The auxiliary memory device for the mathematical formula well solves the problems that various inconvenient factors (the mathematical formula is scattered and distributed in each chapter in a book and is complex to search when in memory learning) exist when students commonly memorize and learn the mathematical formula at present, so that the enthusiasm of the students for memorizing the formula is not high, the students can memorize and learn the formula by uniformly writing the scattered notations on the memory roll paper 3 and corresponding the formula and the formula names one to one, and the two rotating shafts 12 rotate to drive the memory roll paper 3 to rotate around the two cylinders 13, so that the page turning function is realized (the formula memorized by the students rotates along with the rotating shafts 12, the memory roll paper 3 written with the formulas is folded and wound on one cylinder 13, so that the new notations which are positioned on the other cylinder 13 and are not memorized and learned are accompanied with the movement of the memory roll paper 3, show students) and can carry out self-test on students on site after the students memorize and learn the formulas, the formulas (or the formula names) are shielded by moving one of the writing boards 6, so that the students can memorize the formula names (or the formulas) on the other writing board 6 to check the learning and memorizing effect of the students;

better, we still are equipped with the wiping arrangement who is used for wiping clipboard 6 in the horizontal both sides of box 1 front end, after the student has carried out the self-test, we make the writing content on clipboard 6 clean by wiping arrangement through along lateral shifting clipboard 6, and this wiping arrangement covers clipboard 6 completely only need to stimulate clipboard 6 alright clean completely with the content on the clipboard 6, moreover, box 1 lower extreme still is equipped with elevating gear, can satisfy the teacher of giving lessons (imparting knowledge to students) or student (carrying out the self-test and using) of different heights.

The above description is only for the purpose of illustration, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a supplementary memory device of mathematical formula, includes box (1), its characterized in that, horizontal both ends rotate respectively in box (1) to install to rotate and roll (2) and two rotate and roll (2) go up and have memory stock form (3) through the fixed winding of closing device, two it is driven by driving motor (4) that set up roof in box (1) to rotate to roll (2) upper end through belt (16) wheelset, and the horizontal both ends in vertical one side of box (1) are equipped with rectangle slide (5) respectively and rectangle slide (5) in horizontal sliding fit has clipboard (6), box (1) sliding fit has clipboard (6) one side horizontal both ends to be equipped with respectively with first rectangular hole (7) and first rectangular hole (7) that communicate with rectangle slide (5) and keeps away from memory stock form (3) one side and rotate and install rotor plate (8), and rotor plate (8) are arranged in first rectangular hole (7) in and are longitudinal sliding connection has brush board (9) between the two diapire about one end, the brush plate (9) is rotatably provided with a bolt (10) which is in threaded fit with the rotating plate (8), and the bottom of the box body (1) is connected with a lifting device which is arranged on a movable base (11).

2. The auxiliary memory device for mathematical formulas as defined in claim 1, wherein the rotating roller (2) is a rotating shaft (12) rotatably mounted between the upper and lower bottom walls of the case (1), and the rotating shaft (12) is sleeved with a fixed cylinder (13), the rotating shaft (12) is sleeved with a fixed first pulley (14), the output shaft of the driving motor (4) disposed on the inner top wall of the case (1) is sleeved with a fixed second pulley (15), and the two first pulleys (14) and the second pulley (15) enclose a triangle and are connected via a belt (16).

3. The auxiliary mathematical formula memory device according to claim 1, wherein the pressing device comprises an arc-shaped groove (17) which is arranged on the outer circumferential surface of the cylinder (13) and extends along the length direction of the cylinder (13), a first circular hole (18) is formed in one of the upper and lower side walls of the arc-shaped groove (17), an arc-shaped block (19) which is matched with the arc-shaped groove is arranged in the arc-shaped groove (17), a second circular hole (20) which is matched with the first circular hole (18) is formed in the arc-shaped block (19), a positioning column (21) is arranged in the first circular hole (18) in a sliding fit manner, the positioning column (21) penetrates through one end of the first circular hole (18) and is inserted into the second circular hole (20), the positioning column (21) is arranged in the first circular hole (18), one end of the positioning column (21) is integrally connected with a vertically extending driving lever (22), the driving lever (22) penetrates through the cylinder (13) upwards, and a second rectangular hole (23) which is arranged on the cylinder ) One end of the positioning column (21) arranged in the first round hole (18) is connected with a first spring (24), and the other end of the first spring (24) is connected to the bottom wall of the first round hole (18).

4. The auxiliary memory device for mathematical formulas as defined in claim 1, wherein the two rotating plates (8) have a first positioning hole (25) formed on one side thereof opposite to each other and a second positioning hole (26) formed on the side wall of the first rectangular hole (7) corresponding to the first positioning hole (25) and matching with the first positioning hole (25), a positioning plate (27) is slidably fitted in the second positioning hole (26) and inserted into the first positioning hole (25) with the positioning plate (27) penetrating through the second positioning hole (26), one end of the positioning plate (27) disposed in the second positioning hole (26) is connected to a second spring (28) and the other end of the second spring (28) is connected to the bottom wall of the second positioning hole (26), one end of the positioning plate (27) disposed in the second positioning hole (26) is connected to a first dial plate (29) extending perpendicularly to the positioning plate (27) and the first dial plate (29) penetrates outward through the second positioning hole (26), a third rectangular hole (30) which is matched with the first shifting plate (29) in a sliding way and communicated with the outside is arranged on one side wall of the second positioning hole (26) far away from the memory roll paper (3).

5. The auxiliary memory device for mathematical formulas as defined in claim 1, wherein the top wall of the box body (1) is provided with vertically extending locking holes (31) at both lateral sides thereof and a rectangular cavity (32) communicating with the locking holes (31) is provided on the top wall of the box body (1), the locking holes (31) are slidably fitted with unlocking columns (33) and the unlocking columns (33) are disposed in the rectangular cavity (32), one end of the locking column (33) disposed in the rectangular cavity (32) is connected with a rectangular plate (34) slidably fitted with the inner wall of the rectangular cavity (32), both lateral sides of the bottom wall of the rectangular plate (34) are connected with third springs (35) and the other ends of the two third springs are connected to the top wall of the box body (1), one lateral side of the rectangular cavity (32) is provided with a fourth rectangular hole (36), the rectangular plate (34) is integrally connected with a second toggle plate (37) slidably fitted with the fourth rectangular hole (36) and the second toggle plate (37) passes through the fourth rectangular hole (, the top of the writing board (6) is provided with a third round hole (38) and a locking column (39) is vertically matched with the inside of the third round hole (38) in a sliding manner, and a fourth spring (40) is connected between the locking column (39) and the bottom wall of the third round hole (38).

6. The auxiliary memory device for mathematical formulas as defined in claim 1, wherein the lifting device comprises a threaded cylinder (41) fixedly connected with the bottom wall of the case (1), a lifting screw (43) rotatably matched with the base (11) is arranged in the threaded cylinder (41), a lifting motor (48) is arranged in the base (11), the lifting screw (43) is connected with an output shaft of the lifting motor (48), limiting cylinders (44) are fixed on two lateral sides of the bottom wall of the case (1), limiting columns (45) vertically slidably matched with the limiting cylinders (44) are arranged on the base (11), and universal wheels (46) with self-locking function are arranged at the lower end of the base (11).