CN212046600U - Mathematics and applied mathematics are with teaching device - Google Patents

Abstract

The utility model relates to a teaching device for mathematics and applied mathematics, which comprises a base, the bottom of the base is fixedly connected with a universal wheel, the top of the base is fixedly connected with a dustproof shell, the bottom of the inner cavity of the dustproof shell is fixedly connected with a threaded sleeve, a lifting rod is connected in the threaded sleeve, the top of the dustproof shell is provided with a limiting device, the lifting rod passes through the limiting device to be connected with a writing board, the front side of the writing board is movably connected with a first ruler body, the first ruler body is internally and respectively connected with a protractor and a second ruler body from top to bottom, the utility model discloses a lifting rod is arranged, when the height of the writing board needs to be adjusted, an adjusting knob on the limiting device is rotated, so that the lifting rod can be rotated, and simultaneously, the bottom of the lifting rod is adjusted in the threaded sleeve through an external thread when the lifting rod is rotated, so as to adjust the height of the writing board and reduce the teaching burden of teachers.

Description

Mathematics and applied mathematics are with teaching device

Technical Field

The utility model relates to a mathematics and applied mathematics are with teaching device belongs to teaching device technical field.

Background

Use mathematics, be a subject that utilizes mathematical approach to solve practical problem, in economy finance, engineering science and technology etc. field all has the application, simultaneously along with constantly attach attention to the teaching device and drop into, each item device of teaching device has obtained improving well to a certain extent, can be convenient for mathematics mr to impart knowledge to students on the classroom, but still need borrow the instrument alone to impart knowledge to students when teaching among the prior art, it is very inconvenient, simultaneously because teacher's height is different, so teaching device's height need be adjusted according to teacher's height, so that the teacher imparts knowledge to students.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mathematics and teaching device for applied mathematics, through being equipped with the lifter, when needs are adjusted the height of clipboard, rotate the adjust knob on the stop device, make the lifter can rotate, the external screw thread is passed through in the threaded sleeve internal rotation in the bottom of lifter when the lifter rotates simultaneously, adjust the height of lifter in the threaded sleeve, so that adjust the height of clipboard, convenient operation, alleviate teacher's teaching burden, through being equipped with first chi body, the teacher's drawing of being convenient for of second chi body and protractor, need not be with the help of the instrument alone, can pass through the one side that the slider removed the clipboard with first chi body after the drawing is accomplished simultaneously, do not occupy the usage space of clipboard, in order to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a mathematics and applied mathematics are with teaching device, includes the base, the bottom fixedly connected with universal wheel of base, the top fixedly connected with dust guard casing of base, dust guard casing's inner chamber bottom fixedly connected with threaded sleeve, the threaded sleeve in-connection has the lifter, dust guard casing's top is equipped with stop device, the lifter passes stop device and is connected with the clipboard, the front side sliding connection of clipboard has first chi body, from the top down is connected with protractor and second chi body respectively in the first chi body, fixedly connected with level bubble on the second chi body.

Furthermore, the bottom of lifter is equipped with the external screw thread that corresponds with the screw sleeve, the lifter passes through threaded connection with the screw sleeve.

Furthermore, stop device includes annular casing and adjust knob, annular casing fixed connection is in dust-proof housing's top intermediate position, adjust knob threaded connection is on annular casing, the inner circle at annular casing is established to the lifter.

Furthermore, the upper end and the lower end of the first ruler body are fixedly connected with sliding blocks, corresponding sliding grooves are formed in the front side of the writing board, and the first ruler body is connected to the front side of the writing board in a sliding mode through the sliding blocks.

Furthermore, the first ruler body and the second ruler body are provided with symmetrical scale marks, the first ruler body is of a hollow structure, and the protractor and the second ruler body are both connected with limiting bolts.

Furthermore, a limiting groove is formed in the middle of the front side of the first ruler body, and the limiting bolt penetrates through the limiting groove to be connected with the protractor and the second ruler body respectively.

Furthermore, the diameter of the limit bolt head is larger than the width of the limit groove.

The utility model has the advantages that:

1. by arranging the lifting rod, when the height of the writing board needs to be adjusted, the adjusting knob on the limiting device is rotated, so that the lifting rod can rotate, and meanwhile, when the lifting rod rotates, the bottom of the lifting rod rotates in the threaded sleeve through the external thread, so that the height of the lifting rod in the threaded sleeve is adjusted, the height of the writing board is adjusted, the operation is convenient, and the teaching burden of teachers is relieved;

2. through being equipped with first chi body, second chi body and protractor the teacher of being convenient for is drawn, need not be alone with the help of the instrument, can pass through the slider with first chi body after drawing the completion simultaneously and remove the one side of clipboard, does not occupy the usage space of clipboard.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic view of the overall structure of a teaching device for mathematics and applied mathematics of the present invention;

FIG. 2 is a schematic view of the internal structure of a dust-proof case of the teaching device for mathematics and applied mathematics of the present invention;

fig. 3 is a schematic view of the connection structure of the first ruler body, the second ruler body and the protractor of the teaching device for mathematics and applied mathematics of the present invention;

FIG. 4 is a side view of a first ruler body of the teaching device for mathematics and applied mathematics of the present invention;

reference numbers in the figures: 1. a base; 2. a universal wheel; 3. a dust-proof housing; 4. a threaded sleeve; 5. a lifting rod; 6. a limiting device; 7. a writing board; 8. a first ruler body; 9. a protractor; 10. a second ruler body; 11. horizontal bubble; 12. an external thread; 13. an annular housing; 14. adjusting a knob; 15. a slider; 16. scale marks; 17. a limit bolt; 18. a limiting groove.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a teaching device for mathematics and applied mathematics comprises a base 1, wherein the bottom of the base 1 is fixedly connected with a universal wheel 2, the teaching device is convenient to move, the top of the base 1 is fixedly connected with a dustproof shell 3, the bottom of an inner cavity of the dustproof shell 3 is fixedly connected with a threaded sleeve 4, a lifting rod 5 is connected in the threaded sleeve 4, when the lifting rod 5 rotates, the bottom of the lifting rod 5 rotates in the threaded sleeve 4 through an external thread 12, the height of the lifting rod 5 in the threaded sleeve 4 is adjusted so as to adjust the height of a writing board 7, the top of the dustproof shell 3 is provided with a limiting device 6, the lifting rod 5 passes through the limiting device 6 to be connected with the writing board 7, the lifting rod 5 is tightly pushed or loosened through rotating an adjusting knob 14 to limit the lifting rod 5, the front side of the writing board 7 is movably connected with a first ruler body 8, the interior from the top down of first chi body 8 is connected with protractor 9 and second chi body 10 respectively, fixedly connected with horizontal bubble 11 on the second chi body 10, the teacher of being convenient for draws, need not be alone with the help of the instrument, can pass through the slider with first chi body after drawing is accomplished simultaneously and remove the one side of clipboard, does not occupy the usage space of clipboard.

Specifically, as shown in fig. 1 and 2, the bottom of lifter 5 is equipped with the external screw thread 12 that corresponds with threaded sleeve 4, lifter 5 passes through threaded connection with threaded sleeve 4, stop device 6 includes annular casing 13 and adjusting knob 14, annular casing 13 fixed connection is in dust proof housing 3's top intermediate position, adjusting knob 14 threaded connection is on annular casing 13, lifter 5 establishes the inner circle at annular casing 13, and it is tight to push up lifter 5 through rotating adjusting knob 14, can carry out spacingly to lifter 5.

Specifically, as shown in fig. 3, the upper end and the lower end of the first ruler body 8 are fixedly connected with a sliding block 15, the front side of the writing board 7 is provided with a corresponding sliding groove, the first ruler body 8 is slidably connected to the front side of the writing board 7 through the sliding block 15, the first ruler body 8 is convenient to move through the sliding block 15, the first ruler body 8 and the second ruler body 10 are both provided with symmetrical scale marks 16 for facilitating drawing, the inside of the first ruler body 8 is of a hollow structure, the protractor 9 and the second ruler body 10 are both connected with a limit bolt 17, the second ruler body 10 and the protractor 9 are fixed on the first ruler body 8 by rotating the limit bolt 17, the diameter of the limit bolt 17 is smaller than the width of the limit groove 18, when the limit bolt 17 is not screwed, the limit bolt 17 can drive the second ruler body 10 and the protractor 9 to slide on the first ruler body 8, the diameter of the screw head of the limiting bolt 17 is larger than the width of the limiting groove 18.

Specifically, as shown in fig. 4, a limiting groove 18 is formed in the front middle position of the first ruler body 8, and the limiting bolt 17 penetrates through the limiting groove 18 to be connected with the protractor 9 and the second ruler body 10 respectively.

The utility model discloses the theory of operation: when the teaching device is used, the adjusting knob 14 on the limiting device 6 is rotated to enable the lifting rod 5 to rotate, meanwhile, when the lifting rod 5 rotates, the bottom of the lifting rod 5 rotates in the threaded sleeve 4 through the external thread 12 to adjust the height of the lifting rod 5 in the threaded sleeve 4 so as to adjust the height of the writing board 7, after the height adjustment of the writing board 7 is completed, the adjusting knob 14 is rotated to enable the adjusting knob 14 to tightly push the lifting rod 5 to limit the lifting rod 5 so as to stop the rotation of the writing board 7, so that a teacher can conveniently write, the front side of the writing board 7 is provided with the first ruler body 8, the second ruler body 10 and the protractor 9 so as to facilitate the teacher to draw a picture, when the teaching device is used, the first ruler body 8 is moved to a proper position through the sliding block 15, then the second ruler body 10 is rotated, whether the second ruler body 10 is in a horizontal state is observed through the horizontal bubble 11, and then a rectangular coordinate system is drawn, later with protractor 9 through spacing bolt 17 along spacing groove 18 move down rectangular coordinate system department, observe that the angle is confirmed a bit, then put aside protractor 9, rise second chi body 10, draw the function line through a bit, convenient operation, second chi body 10 and protractor 9 can be fixed on first chi body 8 through rotating spacing bolt 17 simultaneously, can pass through slider 15 with first chi body 8 and remove the one side of clipboard 7 after drawing the completion simultaneously, do not occupy the usage space of clipboard 7, convenient and practical.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims (7)

1. The utility model provides a mathematics and applied mathematics are with teaching device, includes base (1), its characterized in that: the bottom fixedly connected with universal wheel (2) of base (1), the top fixedly connected with dust keeper (3) of base (1), the inner chamber bottom fixedly connected with threaded sleeve (4) of dust keeper (3), threaded sleeve (4) in-connection has lifter (5), the top of dust keeper (3) is equipped with stop device (6), lifter (5) pass stop device (6) and are connected with clipboard (7), the front side slip of clipboard (7) is connected with first chi body (8), from the top down is connected with protractor (9) and second chi body (10) respectively in first chi body (8), fixedly connected with level bubble (11) on second chi body (10).

2. A teaching device for mathematics and applied mathematics according to claim 1, wherein: the bottom of lifter (5) is equipped with external screw thread (12) that correspond with threaded sleeve (4), lifter (5) and threaded sleeve (4) pass through threaded connection.

3. A teaching device for mathematics and applied mathematics according to claim 1, wherein: stop device (6) include annular casing (13) and adjust knob (14), annular casing (13) fixed connection is in the top intermediate position of dust cover (3), adjust knob (14) threaded connection is on annular casing (13), the inner circle at annular casing (13) is established in lifter (5).

4. A teaching device for mathematics and applied mathematics according to claim 1, wherein: the upper end and the lower end of the first ruler body (8) are fixedly connected with sliding blocks (15), corresponding sliding grooves are formed in the front side of the writing board (7), and the first ruler body (8) is connected to the front side of the writing board (7) in a sliding mode through the sliding blocks (15).

5. A teaching device for mathematics and applied mathematics according to claim 1, wherein: the novel protractor is characterized in that symmetrical scale marks (16) are arranged on the first ruler body (8) and the second ruler body (10), the inside of the first ruler body (8) is of a hollow structure, and limiting bolts (17) are connected to the protractor (9) and the second ruler body (10).

6. A teaching device for mathematics and applied mathematics as claimed in claim 5, wherein: a limiting groove (18) is formed in the middle of the front side of the first ruler body (8), and the limiting bolt (17) penetrates through the limiting groove (18) to be connected with the protractor (9) and the second ruler body (10) respectively.

7. A teaching device for mathematics and applied mathematics according to claim 6, wherein: the diameter of the screw of the limiting bolt (17) is smaller than the width of the limiting groove (18), and the diameter of the screw head of the limiting bolt (17) is larger than the width of the limiting groove (18).

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