CN213458605U

CN213458605U - Primary school mathematics mr's measuring scale that can assemble

Info

Publication number: CN213458605U
Application number: CN202022710201.4U
Authority: CN
Inventors: 罗长莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-06-15
Anticipated expiration: 2030-11-20

Abstract

The utility model discloses a primary school's mathematics mr that can assemble uses measuring tape, which comprises a body, the fixed horizontal pole that is equipped with of the inside intermediate position of body, the one end surface of body imbeds respectively and is equipped with first scale and second scale, the top of body is seted up flutedly, the inside both ends of recess all are rotated through the pivot and are equipped with the rotary drum, and the surface of rotary drum is equipped with first pendulum rod and second pendulum rod, and the second pendulum rod is close to the fixed stopper that is equipped with of one end of rotary drum, the inside slip of second pendulum rod is equipped with the third pendulum rod, and the fixed fixture block that is equipped with of intermediate position that second pendulum rod one end was kept away from to the third pendulum rod. The utility model discloses a many pendulum rods that set up can accomodate the whole folding of measuring tape when the mr does not use, can further make things convenient for mr's carrying to can be in the same place the measuring tape combination that the mr often used at ordinary times through the pendulum rod and the scale that set up, make things convenient for mr to use, further improved the practicality.

Description

Primary school mathematics mr's measuring scale that can assemble

Technical Field

The utility model relates to a teaching technical field especially relates to a primary school's mathematics mr that can assemble uses measuring tape.

Background

The measuring scale is also called as a graduated scale, and is a tool for measuring the length of an object by taking a length unit as a standard, the division value of the graduated scale is generally 1mm, the measuring ranges of students in general specifications are 10cm, 15cm and 20cm, and the measuring length of the graduated scale is the basic skill of physical experiments and is also the basis of correct reading of other measuring instruments.

When primary school mr carries out the mathematics teaching, need use relevant measuring tape often, for student's explanation length and angle and curved notion and definition, the explanation of length and angle and curved notion then need use ruler, set-square and arc measuring tape board respectively, consequently, current measuring tape exists when being used by mr's teaching: different measuring rulers need to be used repeatedly in length, angle and curved concept teaching, and it is comparatively troublesome to change to use, and the three does not possess the equipment function, leads to carrying inconvenient shortcoming.

Therefore, an assembled measuring scale for primary school mathematics teachers is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a measuring scale for primary school mathematics teachers, which can be assembled.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a primary school's mathematics mr that can assemble uses measuring tape, includes the body, the fixed horizontal pole that is equipped with in the inside intermediate position of body, the one end surface of body imbeds respectively and is equipped with first scale and second scale, the top of body is seted up flutedly, the inside both ends of recess all are equipped with the rotary drum through the pivot rotation, and the surface of rotary drum is equipped with first pendulum rod and second pendulum rod, and the second pendulum rod is close to the fixed stopper that is equipped with of one end of rotary drum, the inside slip of second pendulum rod is equipped with the third pendulum rod, and the intermediate position that second pendulum rod one end was kept away from to the third pendulum rod is fixed and is equipped with the.

Preferably, the body is in a semicircular arc shape, the first scale is located on the arc surface, and the second scale is located on the upper portion of the body.

Preferably, an opening is formed in the middle of the cross rod, the opening faces to one side far away from the first scale and the second scale, and a rubber pad is fixedly arranged on the surface of the opening.

Preferably, the widths of the first swing rod and the second swing rod are half of the width of the rotary drum, the sum of the widths of the first swing rod and the second swing rod is consistent with the width of the groove, and damping rubber is arranged on the parts, in contact with the first swing rod and the second swing rod, of the inner walls of the two sides of the groove.

Preferably, a limiting groove is formed in the surface of one of the drums, the limiting block is located inside the limiting groove, and the limiting block is connected with the limiting groove in a sliding mode.

Preferably, magnetic blocks are fixedly arranged at the ends, far away from the rotary drum, of the first swing rod and the third swing rod, and the first swing rod is magnetically connected with the third swing rod.

Preferably, a clamping hole is formed in one end, away from the rotary drum, of the first swing rod, and the clamping block is matched with the clamping hole.

Preferably, one end of the top of the body is fixedly provided with a limiting plate, and one side of the limiting plate is abutted against one side of the first swing rod.

Compared with the prior art, the beneficial effects of the utility model are that:

through the body that sets up, the scale, pendulum rod and rotary drum, with the effect that makes things convenient for the teacher to use has, when the teacher needs to use, only need with first pendulum rod, second pendulum rod and third pendulum rod come from the inside reversal of recess, can assemble into a right angle isosceles triangle and orthorhombic triangle, only need to take in the second pendulum rod and all take in the inside of recess with first pendulum rod and second pendulum rod with the third pendulum rod after the teacher finishes using, through the mr accomodate the whole folding of measuring tape when not using, can further make things convenient for mr's carrying, and can be in the same place the measuring tape combination that the mr often used at ordinary times through pendulum rod and the scale that sets up, still further improved the practicality when making things convenient for the mr to use.

Drawings

Fig. 1 is a schematic perspective view of an assembled ruler for a teacher in primary school mathematics according to the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the connection between the second swing link and the drum in FIG. 2;

FIG. 4 is a cross-sectional view of the second swing link of FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 2 at A;

fig. 6 is a partially enlarged view of fig. 2 at B.

In the figure: 1. a body; 2. a first scale; 3. a second scale; 4. a cross bar; 5. a first swing link; 6. a second swing link; 7. a groove; 8. a rotating drum; 9. a limiting groove; 10. a limiting block; 11. a third swing link; 12. a clamping block; 13. and a limiting plate.

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.

Referring to fig. 1-6, an assembled measuring scale for a primary school mathematics teacher comprises a body 1, a cross rod 4 is fixedly arranged at the middle position inside the body 1, a first scale 2 and a second scale 3 are respectively embedded in one end surface of the body 1, a groove 7 is formed in the top of the body 1, rotary drums 8 are rotatably arranged at two ends inside the groove 7 through rotary shafts, a first swing rod 5 and a second swing rod 6 are arranged on the surface of each rotary drum 8, a limiting block 10 is fixedly arranged at one end, close to the rotary drum 8, of the second swing rod 6, a third swing rod 11 is slidably arranged inside the second swing rod 6, the third swing rod 11 and the first swing rod 5 are matched closely, the third swing rod 11 can be drawn out from the inside of the second swing rod 6 only by normal force of a user, and a clamping block 12 is fixedly arranged at the middle position, far away from one end of the second swing rod 6, of the third swing.

The body 1 is a semicircle, the first scale 2 is located on the arc surface, the second scale 3 is located on the upper portion of the body 1, the first scale 2 is an angle scale, and the second scale 3 is a linear scale.

The opening has been seted up to the intermediate position of horizontal pole 4, and the open-ended orientation is for keeping away from one side of first scale 2 and second scale 3, and open-ended fixed surface is equipped with the rubber pad, and the design of opening and rubber pad all plays the effect that makes things convenient for the teacher to grip.

The widths of the first swing rod 5 and the second swing rod 6 are half of the width of the rotary drum 8, the sum of the widths of the first swing rod 5 and the second swing rod 6 is consistent with the width of the groove 7, damping rubber is arranged on the parts, in contact with the first swing rod 5 and the second swing rod 6, of the inner walls of the two sides of the groove 7, and the first swing rod 5 and the second swing rod 6 can be conveniently stored.

A limiting groove 9 is formed in the surface of one of the rotary drums 8, the limiting block 10 is located inside the limiting groove 9, the limiting block 10 is connected with the limiting groove 9 in a sliding mode, the limiting groove 9 and the limiting block 10 are designed to enable the first swing rod 5 and the second swing rod 6 to be located on the same straight line due to the fact that the first swing rod 5 and the second swing rod 6 cannot be in butt joint on the same straight line when the first swing rod 5 and the second swing rod 6 are pulled out from the inside of the groove 7 through the limiting block 10 in a sliding mode inside the limiting groove 9.

The magnetic blocks are fixedly arranged at the ends, far away from the rotary drum 8, of the first swing rod 5 and the third swing rod 11, the first swing rod 5 is magnetically connected with the third swing rod 11, the end, far away from the rotary drum 8, of the first swing rod 5 is provided with a clamping hole, the clamping block 12 is matched with the clamping hole, and the clamping block 12 and the clamping hole are designed to be more stable when the two magnetic blocks are magnetically connected.

The fixed limiting plate 13 that is equipped with of one end at body 1 top, and one side of limiting plate 13 and one side butt of first pendulum rod 5, limiting plate 13's design effect only need lean on first pendulum rod 5 on limiting plate 13 when the teacher need assemble into right straight triangle-shaped, and first pendulum rod 5 is the right angle with the contained angle of body 1 this moment, takes out third pendulum rod 11 from the inside of second pendulum rod 6 again and can assemble into right straight triangle-shaped.

The working principle is as follows: the utility model discloses, when the mr needs to use and measure the angle, only need to hold horizontal pole 4 with the hand, then use the circular arc part of body 1 as the bevel protractor, when needs to measure linear length, only need to use the top part of body 1 as the ruler, when the mr needs to use the set square, the mr only needs to take out first pendulum rod 5 and second pendulum rod 6 from the inside of recess 7, then promote second pendulum rod 6 forward and drive stopper 10 and slide in the inside of spacing groove 9, when first pendulum rod 5 and second pendulum rod 6 are on the same straight line, then block 12 card is gone into the card hole, and connect two magnetic path magnetism, this moment is right isosceles triangle, when the mr first pendulum rod 5 is vertically put and with one side of first pendulum rod 5 and one side butt of limiting plate 13, at this moment take out third pendulum rod 11 from the inside of second pendulum rod 6, the first swing rod 5 and the third swing rod 11 are connected together through the clamping holes of the clamping blocks 12 and the magnetic blocks, at the moment, the first swing rod 5 and the third swing rod 11 are right-angled triangles, when a teacher finishes using the novel classroom chair, the teacher only needs to plug the third swing rod 11 into the second swing rod 6 and move the second swing rod 6 back to the original position, then the first swing rod 5 and the second swing rod 6 are placed into the grooves 7, and at the moment, the cross rod 4 can be held to bring the whole body 1 to the next classroom for use.

The utility model discloses in, above the mounting means, the connected mode or the mode that sets up of all parts are common mechanical system to the concrete structure, model and the coefficient index of all parts thereof are its from taking the technique, as long as can reach all can implementing of its beneficial effect, so do not add at much and give unnecessary detail.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

In the present invention, unless otherwise specified, the terms "up, down, left, right, front, back, inside, outside, vertical and horizontal" and the like used in the terms refer to the orientation of the terms in the conventional usage, or are colloquially understood by those skilled in the art, and are not to be construed as limiting the terms, and the terms "first", "second", and "third" do not refer to a specific number or order and are used merely for name differentiation, and the terms "include", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. The utility model provides a primary school's mathematics mr that can assemble uses measuring tape, includes body (1), its characterized in that, the fixed horizontal pole (4) that is equipped with in the inside intermediate position of body (1), the one end surface of body (1) imbeds respectively and is equipped with first scale (2) and second scale (3), recess (7) are seted up at the top of body (1), the inside both ends of recess (7) are all rotated through the pivot and are equipped with rotary drum (8), and the surface of rotary drum (8) is equipped with first pendulum rod (5) and second pendulum rod (6), and the one end that second pendulum rod (6) is close to rotary drum (8) is fixed and is equipped with stopper (10), the inside slip of second pendulum rod (6) is equipped with third pendulum rod (11), and the intermediate position that second pendulum rod (6) one end was kept away from to third pendulum rod (11) is fixed and is equipped with fixture block (12).

2. An assembled ruler for primary school mathematics teacher according to claim 1, characterized in that said body (1) is semi-arc shaped, said first scale (2) is located on the arc surface, said second scale (3) is located on the upper part of body (1).

3. The combinable measuring ruler for primary school mathematics teachers according to claim 1, wherein an opening is formed in the middle of the cross rod (4), the opening faces to the side away from the first scale (2) and the second scale (3), and a rubber pad is fixedly arranged on the surface of the opening.

4. The assembled measuring tape for the mathematics teacher in primary school according to claim 1, wherein the width of the first swing link (5) and the second swing link (6) are both half of the width of the rotary drum (8), the sum of the widths of the first swing link (5) and the second swing link (6) is consistent with the width of the groove (7), and the parts of the inner walls of the two sides of the groove (7) contacting with the first swing link (5) and the second swing link (6) are provided with damping rubber.

5. An assembled ruler for primary school mathematics teacher according to claim 1, wherein one of the revolving drums (8) in a group of revolving drums (8) is equipped with a limiting groove (9) on the surface, the limiting block (10) is located inside the limiting groove (9), and the limiting block (10) is connected with the limiting groove (9) in a sliding way.

6. The combinable measuring ruler for primary school mathematics teachers according to claim 1, wherein magnetic blocks are fixedly arranged at the ends of the first swing link (5) and the third swing link (11) far away from the rotary drum (8), and the first swing link (5) and the third swing link (11) are magnetically connected.

7. An assembled ruler for primary school mathematics teacher according to claim 6, wherein the end of the first swing link (5) far from the revolving drum (8) is equipped with a clipping hole, and the clipping block (12) is matched with the clipping hole.

8. An assembled ruler for primary school mathematics teacher according to claim 6, wherein one end of the top of said body (1) is fixed with a limit plate (13), and one side of the limit plate (13) is abutted with one side of the first swing link (5).