CN212685069U

CN212685069U - Wall-hanging protractor for teaching

Info

Publication number: CN212685069U
Application number: CN202021539770.0U
Authority: CN
Inventors: 姜宇轩
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-03-12
Anticipated expiration: 2030-07-30

Abstract

The utility model relates to a wall-hanging protractor for teaching, including the base, set up a set of removal merge seat on the base, set up the inner arc scale that every removal merges the seat and be equipped with the arc angle and mark on the top of every removal, set up spacing guide structure between 2 removal merge seats, spacing guide structure includes the guide, sets up on the guide, the last spacing track of lower extreme, lower spacing track, is equipped with central setpoint seat in the guide, central setpoint seat is perpendicular with the position of 2 inner arc scale tip butt joints, sets up bottom retaining member structure between the bottom of removal merge seat and the base, central setpoint seat on set up and show the connecting band, demonstration connecting band and inner arc scale lower extreme set up and connect at the scale hookup and show the digital display that the directional arc angle of correspondence marks. The wall-mounted protractor for teaching can clearly draw angles when used for protracting the angles, and the angles are simply, quickly and accurately drawn. The teaching aid has the advantages of simplicity and convenience in operation, clear and accurate drawing angle and strong presentation effect.

Description

Wall-hanging protractor for teaching

Technical Field

The utility model relates to a teaching aid, especially a wall-hanging protractor for teaching.

Background

At present, in the existing geometric teaching, a plurality of sets of set squares are combined to carry out drawing with multiple intersection degrees, so that the drawing is troublesome and is eliminated by the prior old blackboard. From the study base point, about 80% of students put down the protractors by aligning the tips on the left sides of the lower parts of the protractors with the vertexes of the angles to be measured, and the students put the vertexes of the angles on the arcs of the protractors by mistake, which is the biggest problem in practice; in addition, the scales of the inner circle and the outer circle are not clearly distinguished by a part of students.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a wall-hanging is system angle ware for teaching, and possesses the simple and convenient of operation, the teaching aid that the angle of drawing is clear accurate, the presentation effect is strong.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a wall-hanging protractor for teaching, includes the base, sets up a set of removal merge seat on the base, sets up the inner arc scale that the arc angle marked on the top of every removal merge seat, sets up spacing guide structure between 2 removal merge seats, spacing guide structure include the guide, set up the last spacing track of upper and lower extreme, lower spacing track on the guide, be equipped with central setpoint seat in the guide, central setpoint seat is perpendicular with the position of 2 inner arc scale tip butt joints, the removal merge the bottom of seat and base between set up bottom retaining member structure, central setpoint seat on set up the display connecting band, display connecting band and inner arc scale lower extreme set up and connect at the scale hookup and show the digital display that the corresponding directional arc angle marked.

A hinge seat is arranged at the upper limit track above the central positioning point seat, and an auxiliary line drawing ruler is connected on the hinge seat.

The bottom locking part structure comprises a lower bolt seat and an upper connecting seat, the upper connecting seat is connected with the bottom of the movable combining seat, and a bolt of the lower bolt seat penetrates through a positioning hole of the base and is connected with a nut seat arranged at the lower end of the upper connecting seat.

For clear display, the outer end of the inner arc scale is provided with a reflective flanging.

The end of the display connecting band is provided with a light source body, the light source body and the light reflection flanging form light reflection and highlight indication arc angle marks in the indication area.

The utility model has the advantages that: the wall-mounted protractor for teaching can clearly draw angles when used for protracting the angles, and the angles are simply, quickly and accurately drawn. The teaching aid has the advantages of simplicity and convenience in operation, clear and accurate drawing angle and strong presentation effect. Has good practicability.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the connecting band of the present invention.

Fig. 3 is a schematic structural diagram of another embodiment of the present invention.

Fig. 4 is a schematic view showing the structure of the connection band in fig. 3.

Detailed Description

The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Embodiment 1, as shown in fig. 1 and 2, a wall-hanging protractor for teaching, includes a base 1 provided with a positioning hole 2, a set of movable combining seats 3 disposed on the base 1, an inner arc scale 4 made of acrylic material and provided with an arc angle mark 11 disposed on the top end of each movable combining seat, a limiting guide seat structure disposed between the 2 movable combining seats 3, a retraction cavity 20 disposed in each movable combining seat 3 and an adjusting screw 21 disposed in each movable combining seat, and the inner arc scale 4 is fixed by extending and retracting in the movable combining seat 3 and by cooperating with the adjusting screw 21. The limiting guide seat structure comprises a guide seat 5, an upper limiting rail 6 and a lower limiting rail 7 which are arranged at the upper end and the lower end of the guide seat 5, a central positioning point seat 8 is arranged in the guide seat 5, the central positioning point seat 8 is vertical to the position of the butt joint point of the end parts of the 2 inner arc scaleplates, wherein the inner side of the left movable merging seat 3 is provided with an abutting groove piece 22, the right movable merging seat 3 is connected with a transverse clamping seat 23, the butt joint groove piece 22 is fixedly connected with the movable merging seat 3 on the left side, the transverse clamping seat 23 slides between the upper limiting track 6 and the lower limiting track 7, a bottom locking part structure is arranged between the bottom of the movable merging seat 3 and the base, a display connecting belt 9 with a hook 19 is arranged on the central positioning point seat 8, the display connecting band 9 is connected with the lower end of the inner arc scale 4 through a scale connecting hook 10 and displays digital display corresponding to the pointing arc angle mark 11. The bottom locking part structure comprises a lower bolt seat 12 and an upper connecting seat 13, the upper connecting seat 12 is connected with the bottom of the movable merging seat 3, and a bolt of the lower bolt seat 12 penetrates through the positioning hole 2 of the base and is connected with a nut seat 14 arranged at the lower end of the upper connecting seat 13.

In the embodiment 2, as shown in fig. 3, in the previous embodiment, a hinge seat 15 is provided at the upper limit rail 6 above the center positioning point seat 8, and an auxiliary line drawing ruler 16 is connected to the hinge seat.

As shown in fig. 4, in combination with the above 2 embodiments, for clarity, the outer end of the inner arc ruler 4 is provided with a reflective flange 17. The end of the display connecting band 9 is provided with a light source body 18, the light source body 18 is connected with a battery 24 of the display connecting band 9, the light source body 18 and the reflecting flanging 17 form light reflection and highlight the pointing arc angle mark 11 in the pointing area.

The wall-mounted protractor for teaching can clearly draw angles when used for protracting the angles, and the angles are simply, quickly and accurately drawn. The teaching aid has the advantages of simplicity and convenience in operation, clear and accurate drawing angle and strong presentation effect. Has good practicability.

The above embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims

1. The utility model provides a wall-hanging protractor for teaching, its characterized in that, includes the base, sets up a set of removal merge seat on the base, set up and be equipped with the inner arc scale that the arc angle was marked on the top of every removal merge seat, set up spacing guide structure between 2 removal merge seats, spacing guide structure include the guide, set up last spacing track, the lower spacing track of upper and lower extreme on the guide, be equipped with central setpoint seat in the guide, central setpoint seat is perpendicular with the position of 2 inner arc scale tip butt joints, the bottom of removal merge seat and base between set up bottom retaining member structure, central setpoint seat on set up the display connecting band, display connecting band and inner arc scale lower extreme set up at scale hookup and correspond the digital display that directional arc angle was marked.

2. The wall-hanging type protractor for teaching of claim 1, wherein: a hinge seat is arranged at the upper limit track above the central positioning point seat, and an auxiliary line drawing ruler is connected on the hinge seat.

3. The wall-hanging type protractor for teaching of claim 1, wherein: the bottom locking part structure comprises a lower bolt seat and an upper connecting seat, the upper connecting seat is connected with the bottom of the movable combining seat, and a bolt of the lower bolt seat penetrates through a positioning hole of the base and is connected with a nut seat arranged at the lower end of the upper connecting seat.

4. The wall-hanging type protractor for teaching of claim 1, wherein: the outer end of the inner arc scale is provided with a reflective flange.

5. The wall-hanging type protractor for teaching of claim 1 or 4, wherein: the end of the display connecting band is provided with a light source body, the light source body and the light reflection flanging form light reflection and highlight indication arc angle marks in the indication area.