CN214470525U

CN214470525U - Portable circumference measuring device for primary school mathematical education

Info

Publication number: CN214470525U
Application number: CN202120907559.8U
Authority: CN
Inventors: 黄艳美
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-10-22
Anticipated expiration: 2031-04-29

Abstract

The utility model discloses a belong to teaching aid technical field, specifically be a portable circumference measuring device for primary school's mathematical education, it is including measuring box and fixed plate, the top and the bottom of measuring the box inner chamber are provided with first spout, the removal end slidable mounting of first spout has the removal chi, fixed plate fixed mounting is in the bottom of measuring the box, the bottom fixed mounting of fixed plate inner chamber has the dipperstick, the bottom fixed mounting of fixed plate has the compasses needle, in this application file, can be convenient for mr uses circumference measuring device to draw on the blackboard, makes things convenient for mr's operation, has improved the effect of measuring the circumference, adjusts the length of dipperstick according to the demand, and the figure that prevents some measures length inadequately, has alleviateed mr's the teaching degree of difficulty.

Description

Portable circumference measuring device for primary school mathematical education

Technical Field

The utility model relates to a teaching aid technical field specifically is a portable circumference measuring device for primary school's mathematical education.

Background

Primary school mathematics is through the educational material, teach children's understanding about the number, the arithmetic of four fundamental rules, the computational formula of figure and length, the unit converts a series of knowledge, lay good mathematics basis for junior middle school and daily life's calculation, in the prior art, primary school mathematics mr is when teaching, need use circumference measuring device to draw the figure on the blackboard, current device structure is complicated, inconvenient operation, current dipperstick measuring range is limited, it is not enough to lead to some figure measuring length, teacher's the teaching degree of difficulty has been improved.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

In view of the above and/or the problems existing in the prior teaching aid, the utility model discloses a teaching aid.

Therefore, the utility model aims at providing a portable circumference measuring device for primary school's mathematical education can be convenient for the mr to use circumference measuring device to draw on the blackboard, makes things convenient for the operation of mr, has improved the effect of measuring the circumference, adjusts the length of dipperstick according to the demand, and the figure that prevents some measures length inadequately, has alleviateed mr's the teaching degree of difficulty.

For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:

the utility model provides a portable circumference measuring device for primary school's mathematical education, is including measuring box and fixed plate, the top and the bottom of measuring the box inner chamber are provided with first spout, the removal end slidable mounting of first spout has the removal chi, fixed plate fixed mounting is in the bottom of measuring the box, the bottom fixed mounting of fixed plate inner chamber has the dipperstick, the bottom fixed mounting of fixed plate has the compasses needle, the bottom of fixed plate is provided with the second spout, the removal end slidable mounting of second spout has the carriage release lever, the bottom fixed mounting of carriage release lever has the chalk clamp cover, the shrinkage pool has been seted up to the inner wall that the chalk clamp cover.

As a portable primary school is circumference measuring device for mathematical education's an preferred scheme, wherein: the side walls of the measuring box and the fixing plate are fixedly provided with handrails, and the handrails are in threaded connection with the side walls of the measuring box and the fixing plate through bolts.

As a portable primary school is circumference measuring device for mathematical education's an preferred scheme, wherein: the lateral wall of the handrail frame is provided with a magnet, and the magnet is glued with the lateral wall of the handrail frame.

As a portable primary school is circumference measuring device for mathematical education's an preferred scheme, wherein: and a chalk is embedded in the chalk jacket.

As a portable primary school is circumference measuring device for mathematical education's an preferred scheme, wherein: the lateral wall of the movable ruler is fixedly provided with a pull rod, and the pull rod is connected with the lateral wall of the movable ruler in an adhesive mode.

Compared with the prior art: among the prior art, primary school's mathematics mr is when teaching, need use circumference measuring device to draw the figure on the blackboard, current device structure is complicated, inconvenient operation, current dipperstick measuring range is limited, it is not enough to lead to some figure measuring length, the teaching degree of difficulty of mr has been improved, in this application document, the mr of can being convenient for uses circumference measuring device to draw on the blackboard, make things convenient for mr's operation, the effect of measuring the circumference has been improved, adjust the length of dipperstick according to the demand, it is not enough to prevent some figure measuring length, teacher's the teaching degree of difficulty has been alleviateed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:

fig. 1 is a schematic structural view of the portable circumference measuring device for primary school mathematical education of the present invention;

fig. 2 is the utility model relates to a portable primary school is circumference measuring device's for mathematical education first spout schematic diagram.

In the figure: 100 measuring box, 110 first chute, 120 moving ruler, 200 fixing plate, 210 measuring ruler, 220 compasses needle, 230 second chute, 240 moving rod, 250 chalk jacket, 260 chute, 300 hand rest, 400 magnet, 500 chalk, 600 pull rod.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The utility model provides a portable circumference measuring device for primary school mathematical education, please refer to fig. 1-2, including measuring box 100 and fixed plate 200, the top and the bottom of the inner chamber of measuring box 100 are provided with first chute 110, the removal end slidable mounting of first chute 110 has removal chi 120, fixed plate 200 is fixed at the bottom of measuring box 100, the bottom fixed mounting of the inner chamber of fixed plate 200 has measuring scale 210, the bottom fixed mounting of fixed plate 200 has compass needle 220, the bottom of fixed plate 200 is provided with second chute 230, the removal end slidable mounting of second chute 230 has movable rod 240, the bottom fixed mounting of movable rod 240 has chalk clamp cover 250, the inner wall of chalk clamp cover 250 has been seted up with shrinkage pool 260, specifically, the top and the bottom of the inner chamber of measuring box 100 are embedded and installed with first chute 110, the removal end of first chute 110 is provided with removal chi 120, fixed plate 200 passes through the bolt screw thread and installs the bottom at measuring box 100, the bottom of the inner cavity of the fixing plate 200 is provided with a measuring ruler 210 through bolt threads, the bottom of the fixing plate 200 is provided with a compass needle 220 through bolt threads, the bottom of the fixing plate 200 is provided with a second chute 230 through bolt threads, the moving end of the second chute 230 is provided with a moving rod 240, the bottom of the moving rod 240 is provided with a chalk jacket 250 through bolt threads, the inner wall of the chalk jacket 250 is provided with a concave hole 260, the measuring box 100 is provided with measuring scales for measuring the length of a figure, the first chute 110 is used for moving the moving ruler 120, the moving ruler 120 is used for lengthening the measuring scales of the measuring box 100, the length of the measuring ruler 210 is adjusted according to requirements, the situation that the length of some figures is not enough is prevented, the teaching difficulty of teachers is reduced, when the moving ruler 120 is not used, the moving ruler 120 is contained in the measuring box 100, the operation is convenient, the fixing plate 200 is used for a placing device, dipperstick 210 is used for measuring the radius of circle, compasses needle 220 is used for the centre of a circle of fixed circle, second spout 230 is used for operating movable rod 240, thereby remove chalk 500 in the chalk clamp 250, drawing demand according to mr, operating movable rod 240, observe dipperstick 210, remove chalk 500 below the required scale interval, use chalk 500 to carry out the drawing figure, the recess is used for shifting out chalk 500 in the chalk clamp 250, make things convenient for mr's operation, the measuring effect of circumference has been improved.

Referring to fig. 1, handrails 300 are fixedly installed on the side walls of the measurement box 100 and the fixing plate 200, the handrails 300 are in threaded connection with the side walls of the measurement box 100 and the fixing plate 200 through bolts, and specifically, the handrails 300 are used for facilitating a teacher to operate the device and taking the device conveniently.

Referring to fig. 1 again, the side wall of the hand rest 300 is provided with a magnet 400, the magnet 400 is glued to the side wall of the hand rest 300, and specifically, the magnet 400 is used for conveniently adsorbing and fixing the device on a blackboard, thereby facilitating the operation.

Referring to fig. 1 again, a chalk 500 is embedded in the chalk clip 250, and in particular, the chalk 500 is used for drawing on a blackboard and is convenient to use.

Referring to fig. 1 again, the side wall of the movable ruler 120 is fixedly installed with a pull rod 600, the pull rod 600 is glued to the side wall of the movable ruler 120, and specifically, the pull rod 600 is used for operating the movable ruler 120, which is convenient to use.

In a specific use process, the measuring box 100 is used for measuring the length of the graph, when the measured length is not enough, the movable scale 120 is operated using the pull rod 600, the movable scale 120 is moved through the first slide groove 110, the measurement scale of the measuring box 100 is lengthened using the movable scale 120, when the movable scale 120 is not used, the movable scale 120 is accommodated in the measuring box 100, the movable rod 240 is operated according to the drawing requirement of the teacher, the movable rod 240 is moved through the second chute 230, thereby moving the chalk 500 in the chalk holder 250, observing the scale value on the measuring scale 210, moving the chalk 500 to the required circular radius value, the center of a circle is fixed by a compass needle 220, a chalk 500 is used for drawing a figure, the chalk 500 in the chalk clip sleeve 250 is moved out by a groove, the device is adsorbed on a blackboard by a magnet 400, and the device is convenient to operate by a hand-held frame 300.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a portable primary school is circumference measuring device for mathematical education which characterized in that: including measuring box (100) and fixed plate (200), the top and the bottom of measuring box (100) inner chamber are provided with first spout (110), the removal end slidable mounting of first spout (110) has removal chi (120), fixed plate (200) fixed mounting is in the bottom of measuring box (100), the bottom fixed mounting of fixed plate (200) inner chamber has dipperstick (210), the bottom fixed mounting of fixed plate (200) has compasses needle (220), the bottom of fixed plate (200) is provided with second spout (230), the removal end slidable mounting of second spout (230) has carriage release lever (240), the bottom fixed mounting of carriage release lever (240) has chalk jacket (250), shrinkage pool (260) have been seted up to the inner wall that chalk jacket (250) held.

2. The portable circumference measuring device for primary school mathematics teaching as claimed in claim 1, wherein: the side walls of the measuring box (100) and the fixing plate (200) are fixedly provided with handrails (300), and the handrails (300) are in threaded connection with the side walls of the measuring box (100) and the fixing plate (200) through bolts.

3. The portable circumference measuring device for primary school mathematics teaching as claimed in claim 2, wherein: the side wall of the handrail frame (300) is provided with a magnet (400), and the magnet (400) is glued with the side wall of the handrail frame (300).

4. The portable circumference measuring device for primary school mathematics teaching as claimed in claim 1, wherein: chalk (500) is embedded and installed in the chalk jacket (250).

5. The portable circumference measuring device for primary school mathematics teaching as claimed in claim 1, wherein: the lateral wall fixed mounting who removes chi (120) has pull rod (600), pull rod (600) and the lateral wall cementing that removes chi (120).