CN210443060U

CN210443060U - Novel solid geometry teaching aid

Info

Publication number: CN210443060U
Application number: CN201920937151.8U
Authority: CN
Inventors: 任夏瑜
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-05-01
Anticipated expiration: 2029-06-20

Abstract

The utility model discloses a novel solid geometry teaching aid, the structure of which comprises a short rod, a long rod and a fixing device, the utility model relates to a solid geometry teaching aid, the fixing device is arranged at the upper end of the solid geometry teaching aid, a rotary plate inside a groove is rotated by using a twisting knob, the rotary plate is fixed by a fixing bracket on the inner end of an outer cylinder, then a first knob and a second knob are twisted to drive a screw rod to rotate, the fixed sleeve is extruded out of the outer cylinder before the screw rod rotates to fix a paperboard, when the fixed sleeve is withdrawn, the force to the fixed sleeve is only loosened by twisting the first knob and the second knob, the fixed sleeve is withdrawn under the elasticity of a spring, then the rotary plate is rotated by twisting the knob, the problem that the existing solid geometry teaching aid is used in teaching by teachers, in order to make students more intuitively see out three-dimensional effect is solved, the teachers usually add a plurality of paperboard blocks on, but the disassembly and the assembly are not easy in the using process of the paperboard.

Description

Novel solid geometry teaching aid

Technical Field

The utility model relates to a novel solid geometry teaching aid belongs to the teaching aid field.

Background

In the teaching of solid geometry, students often see that the students have no solid dimension, see solid pictures, see plan pictures, do not imagine the patterns of solid pictures, especially when processing complex solid pictures, the relations among points, lines and planes are often not properly grasped, and disorder is easily generated, thereby causing errors, the phenomenon is called as 'vignetting phenomenon', which is a common phenomenon in solid geometry teaching, the fundamental reason is that the space imagination of students is insufficient, therefore, the problem is difficult to be solved correctly because no solid figure is drawn, therefore, a solid geometry teaching aid is provided to make up the problem of insufficient space imagination of students, but current solid geometry teaching aid uses the teaching at the teacher, in order to let the student more audio-visual see out the third dimension, the teacher increases some cardboard pieces on the surface usually, but dismantles the installation simple and easy in the use of cardboard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel solid geometry teaching aid to solve current solid geometry teaching aid and use the teaching at the teacher, in order to let the student more audio-visual see out the third dimension, the teacher increases some cardboard pieces on the surface usually, but dismantles the not simple and easy problem of installation in the use of cardboard.

In order to achieve the above purpose, the present invention is realized by the following technical solution: a novel solid geometry teaching aid comprises a short rod, a long rod, a connecting sleeve, an extension rod and a fixing device, wherein four ends of the outer side of the upper end surface of the short rod are fixedly connected with the long rod through the connecting sleeve, the upper end surface of the long rod is provided with the fixing device, the upper end of the inner part of the right end of the long rod is fixedly connected with the extension rod, the fixing device consists of an outer barrel, a groove, a rotating plate, a first knob, a twisting knob, a second knob, a connecting plate, a fixing support, a tension plate, a spring, a fixing sleeve and a screw rod, the front end surface of the outer barrel is provided with the groove, the rotating plate is arranged in the groove, the outer end surface of the left end of the outer barrel is rotatably connected with the first knob, the outer end surface of the left end of the outer barrel is rotatably connected with the twisting knob, the upper end surface of the right end of, the upper end of the inner end face of the outer barrel is fixedly connected with the fixing support, the fixing support is rotatably connected with the rotating plate, the left end of the inner portion of the outer barrel is fixedly connected with the tension plate, the middle of the right end face of the tension plate is fixedly connected with the spring, the right end face of the spring is fixedly connected with the fixing sleeve, screw rods are arranged at the left end and the right end of the inner portion of the outer barrel, the outer end face of each screw rod is rotatably connected with the first knob and the second knob, and the outer end face of the outer barrel is fixedly connected.

Furthermore, the inner diameter of the fixed support is 2 mm larger than the outer diameter of the rotating plate, so that the fixed support can conveniently rotate to enter the inside of the fixed support.

Furthermore, the left end of the fixed support is in an open shape, so that the connecting plate can rotate conveniently.

Furthermore, the diameter of the screw is 3 mm larger than the width of the fixing sleeve, so that the fixing sleeve can be extruded out of the outer cylinder.

Furthermore, the rotating distance of the rotating plate on the outer cylinder is not more than the distance from the upper end surface of the slot to the tension plate, so that the rotating plate is prevented from interfering with the fixed support when rotating, and incomplete rotation is avoided.

Furthermore, the difference between the first knob and the twisting knob is 2 millimeters, so that the rotation is convenient.

Furthermore, the short rod, the long rod and the outer barrel are all made of alloy materials, so that the hardness is strong, and the service life is long.

Furthermore, a layer of rubber substance is attached to the outer surfaces of the first knob, the twisting knob and the second knob, so that the friction force of the first knob, the twisting knob and the second knob is increased.

The utility model relates to a novel solid geometry teaching aid, which arranges a fixing device on the upper end of the solid geometry teaching aid, uses a twisting knob to rotate a rotating plate in a groove, the fixing support on the inner end of the outer cylinder is used for fixing, then the first knob and the second knob are twisted to drive the screw rod to rotate, and the fixing sleeve is extruded out of the outer cylinder by the forward rotation of the screw rod, thereby fixing the paper board, when the paper board is retracted, only the first knob and the second knob are required to be twisted to loosen the acting force on the fixed sleeve, the solid geometry teaching aid is recovered under the elasticity of the spring, and then the rotating plate is rotated by twisting the knob, so that the problem that the existing solid geometry teaching aid is used and taught by teachers is solved, in order to make students more intuitively see the stereoscopic impression, teachers usually add some cardboard blocks on the surface, but the cardboard blocks are not easy to detach and install in the using process.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the fixing device of the present invention;

fig. 3 is a schematic cross-sectional view of the fixing device of the present invention;

fig. 4 is a schematic view of the internal structure of the fixing device of the present invention;

in the figure: short rod-1, long rod-2, fixing device-3, connecting sleeve-4, extension rod-5, outer cylinder-301, slot-302, rotating plate-303, first knob-304, twisting knob-305, second knob-306, connecting plate-307, fixing support-308, tension plate-309, spring-3010, fixing sleeve-3011 and screw-3012.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a novel solid geometry teaching aid: the outer end face of the upper end face of the short rod 1 is fixedly connected with the long rod 2 through the connecting sleeve 4, the fixing device 3 is arranged on the upper end face of the long rod 2, the upper end inside the right end of the long rod 2 is fixedly connected with the extension rod 5, the fixing device 3 comprises an outer cylinder 301, a slot 302, a rotating plate 303, a first knob 304, a twisting knob 305, a second knob 306, a connecting plate 307, a fixing support 308, a tension plate 309, a spring 3010, a fixing sleeve 3011 and a screw 3012, the front end face of the outer cylinder 301 is provided with the slot 302, the rotating plate 303 is arranged inside the slot 302, the outer end face of the left end of the outer cylinder 301 is rotatably connected with the first knob 304, the outer end face of the left end of the outer cylinder 301 is rotatably connected with the twisting knob 305, the upper end face of the right end of the outer cylinder 301 is rotatably connected with the second knob 306, the left end face of the rotating plate 303 is fixedly connected with the connecting plate 307, the upper end of the inner end face of the outer cylinder 301 is fixedly connected with the fixing support 308, the fixing support 308 is rotatably connected with the rotating plate 303, the left end inside the outer cylinder 301 is fixedly connected with the tension plate 309, the middle part of the right end face of the tension plate 309 is fixedly connected with the spring 3010, the right end face of the spring 3010 is fixedly connected with the fixing sleeve 3011, the left end and the right end inside the outer cylinder 301 are provided with the screws 3012, the outer end face of each screw 3012 is rotatably connected with the first knob 304 and the second knob 306, the outer end face of the outer cylinder 301 is fixedly connected with the long rod 2, the inner diameter of the fixing support 308 is 2 mm larger than the outer diameter of the rotating plate 303, the left end of the fixing support 308 is in an opening shape, the diameter of each screw 3012 is 3 mm larger than the width of the fixing sleeve 3011, the rotating distance of the rotating plate 303 on the outer cylinder 301 is not.

The spring 3010 is a mechanical part that works by elasticity, and a part made of elastic material deforms under the action of external force and recovers to the original shape after the external force is removed, and is also a "spring", and is generally made of spring steel, and the types of springs are complex and various, and mainly include a coil spring, a volute spiral spring, a plate spring, a special-shaped spring and the like according to the shape.

When a user wants to use the device, the user firstly fixes the short rod 1 and the long rod 2 through the connecting sleeve 4, then fixes the fixing device 3 at the upper end of the short rod, and two extension rods 5 are arranged at the inner end of the long rod 2, one end of each extension rod 5 is fixed with the connecting sleeve 4, and the user can disassemble the short rod 1 and the long rod 2 at the upper end of the connecting sleeve 4, then forms a group of pyramid states with the extension rods 5 for teaching, then drives the connecting plate 307 to work by using the twisting knob 305, drives the rotating plate 303 connected with the connecting plate 307 to rotate together when the connecting plate 307 works, rotates the rotating plate 303 into the fixing support 308, prevents the rotating plate 303 from shaking up and down when rotating, avoids influencing the normal operation of the fixing device 3, and then rotates the screw 3012 connected with the rotating plate by twisting the first knob 304 and the second knob 306, the screw 3012 moves forward by rotating, the fixing sleeve 3011 on the front end of the inner end of the screw 3012 is discharged through the slot 302, after the fixing sleeve 3011 is discharged, the user can fix the paper board through the inside of the fixing sleeve 3011, then when the user does not use the fixing device, the user only needs to twist the first knob 304 and the second knob 306 in opposite directions to loosen the extrusion force of the screw 3012 on the fixing sleeve 3011, then the fixing sleeve 3011 is pulled back to the inside of the outer cylinder 301 by the pulling force under the action of the spring 3010 on the pulling plate 309, and then the rotating plate 303 is rotated out of the fixing bracket 308 by using the twisting knob 305 to complete the use of the fixing device 3.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a novel solid geometry teaching aid, includes quarter butt (1), stock (2), adapter sleeve (4) and extension bar (5), its characterized in that: the fixing device comprises a short rod (1), a long rod (2) and a fixing device (3), wherein the outer side of the upper end face of the short rod (1) is fixedly connected with the outer side of the upper end face of the long rod (2) through a connecting sleeve (4), the upper end face of the long rod (2) is provided with the fixing device (3), the inner upper end of the right end of the long rod (2) is fixedly connected with an extension rod (5), the fixing device (3) consists of an outer barrel (301), a slot (302), a rotating plate (303), a first knob (304), a twisting knob (305), a second knob (306), a connecting plate (307), a fixing support (308), a tension plate (309), a spring (3010), a fixing sleeve (3011) and a screw (3012), the front end face of the outer barrel (301) is provided with the slot (302), the rotating plate (303) is arranged inside the slot (302), the outer end face of the left end of the outer barrel (301) is rotatably connected with, the upper end surface of the right end of the outer cylinder (301) is rotationally connected with a second knob (306), the left end surface of the rotating plate (303) is fixedly connected with a connecting plate (307), the rotating plate (303) is fixedly connected with the twisting knob (305) through a connecting plate (307), the upper end of the inner end surface of the outer cylinder (301) is fixedly connected with a fixed bracket (308), the fixed bracket (308) is rotationally connected with the rotating plate (303), the left end inside the outer cylinder (301) is fixedly connected with the tension plate (309), the middle part of the right end face of the tension plate (309) is fixedly connected with a spring (3010), the right end face of the spring (3010) is fixedly connected with a fixed sleeve (3011), the left end and the right end inside the outer cylinder (301) are provided with screw rods (3012), the outer end face of the screw rod (3012) is rotatably connected with the first knob (304) and the second knob (306), and the outer end face of the outer cylinder (301) is fixedly connected with the long rod (2).

2. A novel solid geometry teaching aid according to claim 1, characterized in that: the inner diameter of the fixed support (308) is 2 mm larger than the outer diameter of the rotating plate (303).

3. A novel solid geometry teaching aid according to claim 1, characterized in that: the left end of the fixed bracket (308) is open.

4. A novel solid geometry teaching aid according to claim 1, characterized in that: the diameter size of the screw (3012) is 3 mm larger than the width size of the fixed sleeve (3011).

5. A novel solid geometry teaching aid according to claim 1, characterized in that: the rotating distance of the rotating plate (303) on the outer cylinder (301) does not exceed the distance from the upper end surface of the slot (302) to the tension plate (309).

6. A novel solid geometry teaching aid according to claim 1, characterized in that: the difference between the first knob (304) and the twisting knob (305) is 2 mm.