CN209666680U - Blackboard with coordinate is used in a kind of teaching of function curve - Google Patents

Abstract

The utility model relates to mathematical education teaching aid technical fields, specially a kind of function curve teaching Blackboard with coordinate, including blackboard for education and Blackboard with coordinate ontology, the surface of blackboard for education offers observation port, sliding groove is offered on the inner wall of observation port, the internal slide of sliding groove is connected with Blackboard with coordinate ontology, the end of Blackboard with coordinate ontology is welded with baffle, and the surface of Blackboard with coordinate ontology is bonded with limit plate, the surface of Blackboard with coordinate ontology offers limiting slot, cylinder is bonded on the inner wall of limiting slot, idler wheel is rotatably connected on the outside of cylinder, the surface of blackboard for education is bonded with fixed plate, the surface of fixed plate is bolted with brake screw, the end of brake screw is docked at the inside of location hole；Have the beneficial effect that the utility model proposes function curve teaching Blackboard with coordinate two curves can be drawn on one Blackboard with coordinate using sliding structure, and slidably switch, it is simple and convenient.

Description

Blackboard with coordinate is used in a kind of teaching of function curve

Technical field

The utility model relates to mathematical education teaching aid correlative technology field, specially a kind of function curve teaching is black with coordinate Plate.

Background technique

Mathematics is one of course of instruction basic in teaching of senior high school, and the teaching of mathematics is related to the content compared with polygamma function, for example Trigonometric function, power function etc., and teacher is when giving lessons, it is often necessary to the function curve of correlation function is drawn on blackboard for learning Raw study；

In the prior art, teacher generally uses a ruler to draw reference axis on blackboard, then the approximate mark on blackboard Out after several function curve characteristic points, non-drawing time occupies valuable time in classroom, and when two curve comparisons, need to draw two Curve and coordinate；For this purpose, the utility model proposes a kind of function curve teaching Blackboard with coordinate for solving the above problems.

Utility model content

The purpose of this utility model is to provide a kind of function curve teaching Blackboard with coordinate, to solve above-mentioned background technique The problem of middle proposition.

To achieve the above object, the utility model provides the following technical solutions: a kind of function curve teaching Blackboard with coordinate, Including blackboard for education and Blackboard with coordinate ontology, the surface of the blackboard for education offers observation port, the inner wall of the observation port On offer sliding groove, the internal slide of the sliding groove is connected with Blackboard with coordinate ontology, the end of the Blackboard with coordinate ontology It is welded with baffle, and the surface of Blackboard with coordinate ontology is bonded with limit plate, the surface of Blackboard with coordinate ontology offers limiting slot, institute It states and is bonded with cylinder on the inner wall of limiting slot, idler wheel is rotatably connected on the outside of the cylinder, the surface of blackboard for education is bonded with Fixed plate, the surface of the fixed plate are bolted with brake screw, and the end of the brake screw is docked at the inside of location hole.

Preferably, the observation port is in rectangular cylinder structure, and there are two observation port settings, and two observation ports are in be arranged above and below It is distributed on the surface of blackboard for education, sliding groove is in rectangular cylinder structure, and there are two sliding groove settings, and two sliding grooves are about sight The long side for surveying mouth is symmetrical, and the opening of sliding groove is provided with closing-in structure, and the length of closing-in structure is less than the length of baffle.

Preferably, the limiting slot semicircular in shape column structure, limiting slot are provided with two groups, and two groups of limiting slots are about coordinate The height center of blackboard body is symmetrical, and every group of limiting slot is provided with multiple, and multiple limiting slots are equidistant etc., and sizes are arranged in On the surface of Blackboard with coordinate ontology.

Preferably, the fixed plate is in rectangular plate-like structure, and there are four fixed plate settings, and four fixed plates are square arrangement Between two observation ports.

Preferably, the Blackboard with coordinate ontology is in rectangular plate-like structure, and limit plate is in the middle position of Blackboard with coordinate ontology It sets, there are two coordinates logo, two coordinates logos are symmetrical about limit plate for spraying in the plate face of Blackboard with coordinate ontology.

Compared with prior art, the utility model has the beneficial effects that

1. the utility model proposes function curve teaching Blackboard with coordinate use sliding structure, on a Blackboard with coordinate Two curves can be drawn, and are slidably switched, it is simple and convenient；

2. the utility model proposes function curve teaching Blackboard with coordinate is provided with two groups of observation ports, be easy to implement two groups The Characteristic Contrast of curve.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model Blackboard with coordinate body construction schematic diagram；

Fig. 3 is structure enlargement diagram at A in Fig. 1；

Fig. 4 is structure enlargement diagram at B in Fig. 2.

In figure: blackboard for education 1, observation port 2, sliding groove 3, Blackboard with coordinate ontology 4, baffle 5, limit plate 6, limiting slot 7, circle Column 8, idler wheel 9, fixed plate 10, brake screw 11, location hole 12.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1 to FIG. 4: a kind of function curve teaching Blackboard with coordinate, Including blackboard for education 1 and Blackboard with coordinate ontology 4, the surface of blackboard for education 1 offers observation port 2, opens on the inner wall of observation port 2 Equipped with sliding groove 3, the internal slide of sliding groove 3 is connected with Blackboard with coordinate ontology 4, and Blackboard with coordinate ontology 4 is in rectangular plate-like structure, Limit plate 6 is in the medium position of Blackboard with coordinate ontology 4, coordinates logo there are two sprayings in the plate face of Blackboard with coordinate ontology 4, and two A coordinates logo is symmetrical about limit plate 6, and the end of Blackboard with coordinate ontology 4 is welded with baffle 5, and Blackboard with coordinate ontology 4 Surface be bonded with limit plate 6, observation port 2 is in rectangular cylinder structure, and there are two the settings of observation port 2, and two observation ports 2 are in up and down Arranged distribution is on the surface of blackboard for education 1, and sliding groove 3 is in rectangular cylinder structure, and there are two the settings of sliding groove 3, two slidings Slot 3 is symmetrical about the long side of observation port 2, and the opening of sliding groove 3 is provided with closing-in structure, and the length of closing-in structure is less than The length of baffle 5 avoids baffle 5 from falling off from sliding groove 3, when need to switch to two groups of coordinates logos on Blackboard with coordinate ontology 4, Limit plate 6 is pulled, limit plate 6 is slided into the other side from the side of observation port 2, at this point, 4 script of Blackboard with coordinate ontology is in observation Coordinates logo at mouth 2 is slid into the inside of sliding groove 3；

The surface of Blackboard with coordinate ontology 4 offers limiting slot 7, is bonded with cylinder 8 on the inner wall of limiting slot 7, cylinder 8 it is outer Side is rotatably connected to idler wheel 9,7 semicircular in shape column structure of limiting slot, and limiting slot 7 is provided with two groups, and two groups of limiting slots 7 are about seat The height center for marking blackboard body 4 is symmetrical, and every group of limiting slot 7 is provided with multiple, the big float such as multiple limiting slots 7 are equidistant It is listed on the surface of Blackboard with coordinate ontology 4, during Blackboard with coordinate ontology 4 slides, idler wheel 9 rolls in limiting slot 7, is promoted The sliding fluency of Blackboard with coordinate ontology 4；

The surface of blackboard for education 1 is bonded with fixed plate 10, and fixed plate 10 is in rectangular plate-like structure, and fixed plate 10 is provided with four A, four fixed plates 10, which are square, to be arranged between two observation ports 2, and the surface of fixed plate 10 is bolted with brake screw 11, system The end of dynamic screw rod 11 is docked at the inside of location hole 12, screws brake screw 11, its end is made to be plugged on the interior of location hole 12 Portion avoids limit plate 6 and Blackboard with coordinate ontology 4 from arbitrarily sliding, simple and convenient, upper and lower two groups of observation ports 2 and Blackboard with coordinate Ontology 4, convenient for the Characteristic Contrast of two groups of viewing curves.

Working principle: in actual work, the curve of needs can be drawn on Blackboard with coordinate ontology 4 by teacher before classroom, be needed When to two groups of coordinates logos switching on Blackboard with coordinate ontology 4, limit plate 6 is pulled, by limit plate 6 from a sideslip of observation port 2 To the other side, at this point, the coordinates logo that 4 script of Blackboard with coordinate ontology is at observation port 2 is slid into the inside of sliding groove 3, And idler wheel 9 rolls in limiting slot 7, promotes the sliding fluency of Blackboard with coordinate ontology 4, then screws brake screw 11, make it End is plugged on the inside of location hole 12, and limit plate 6 and Blackboard with coordinate ontology 4 is avoided arbitrarily to slide, simple and convenient, up and down Two groups of observation ports 2 and Blackboard with coordinate ontology 4, convenient for the Characteristic Contrast of two groups of viewing curves.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of function curve teaching Blackboard with coordinate, including blackboard for education (1) and Blackboard with coordinate ontology (4), feature exists In: the surface of the blackboard for education (1) offers observation port (2), offers sliding groove (3) on the inner wall of the observation port (2), The internal slide of the sliding groove (3) is connected with Blackboard with coordinate ontology (4), and the end of the Blackboard with coordinate ontology (4) is welded with Baffle (5), and the surface of Blackboard with coordinate ontology (4) is bonded with limit plate (6), the surface of Blackboard with coordinate ontology (4) opens up limited Position slot (7) is bonded with cylinder (8) on the inner wall of the limiting slot (7), is rotatably connected to idler wheel on the outside of the cylinder (8) (9), the surface of blackboard for education (1) is bonded with fixed plate (10), and the surface of the fixed plate (10) is bolted with brake screw (11), The end of the brake screw (11) is docked at the inside of location hole (12).

2. a kind of function curve teaching Blackboard with coordinate according to claim 1, it is characterised in that: the observation port (2) In rectangular cylinder structure, there are two observation port (2) settings, and two observation ports (2) are in upper and lower arranged distribution in blackboard for education (1) On surface, sliding groove (3) is in rectangular cylinder structure, and there are two sliding groove (3) settings, and two sliding grooves (3) are about observation port (2) Long side it is symmetrical, the opening of sliding groove (3) is provided with closing-in structure, and the length of closing-in structure is less than the length of baffle (5) Degree.

3. a kind of function curve teaching Blackboard with coordinate according to claim 1, it is characterised in that: the limiting slot (7) Semicircular in shape column structure, limiting slot (7) are provided with two groups, in height of two groups of limiting slots (7) about Blackboard with coordinate ontology (4) The heart is symmetrical, and every group of limiting slot (7) is provided with multiple, and multiple limiting slots (7) are equidistant etc., and sizes are arranged in Blackboard with coordinate sheet On the surface of body (4).

4. a kind of function curve teaching Blackboard with coordinate according to claim 1, it is characterised in that: the fixed plate (10) In rectangular plate-like structure, there are four fixed plate (10) settings, four fixed plates (10) be square be arranged in two observation ports (2) it Between.

5. a kind of function curve teaching Blackboard with coordinate according to claim 1, it is characterised in that: the Blackboard with coordinate sheet Body (4) is in rectangular plate-like structure, and limit plate (6) is in the medium position of Blackboard with coordinate ontology (4), Blackboard with coordinate ontology (4) There are two coordinates logo, two coordinates logos are symmetrical about limit plate (6) for spraying in plate face.