CN214671154U - Mathematics four fundamental operations demonstration device - Google Patents

Abstract

The utility model discloses a mathematics four fundamental operations demonstration device, the structure of which comprises a demonstration device main body and an auxiliary clamping device, the utility model realizes the rapid clamping and placement of the mathematics four fundamental operations meter by arranging the auxiliary clamping device, namely, under the drive of a worm and a worm wheel, the rotation of a rotating plate realizes the pulling of guide rods at the upper side and the lower side, a clamping frame can move under the pulling of the guide rods, the rapid clamping and placement of the mathematics four fundamental operations meter is realized, the advantage of rapid clamping and placement of the mathematics four fundamental operations meter is realized, and under the drive of an auxiliary block and a telescopic rod in a rotation assembly at the front side of the clamping frame, a turntable can be driven to synchronously rotate, after the adjustment is completed, the turntable can realize the locking movement under the matching of a locking shaft and a pressure spring, thereby the adjustment of the viewing angle of the mathematics four fundamental operations meter is ensured, thereby the rapid adjustment of the viewing angle of the mathematics four fundamental operations meter is realized, ensuring the children to watch comfortably.

Description

Mathematics four fundamental operations demonstration device

Technical Field

The utility model relates to a mathematics four fundamental operations demonstration technical field, concretely relates to mathematics four fundamental operations presentation device.

Background

Primary school mathematics is a series of knowledge converted in units through teaching materials and teaching children's understanding about numbers, four arithmetic operations, graphic and length calculation formulas, and lays a good mathematical foundation for junior middle school and daily life calculation, the four arithmetic operations refer to four arithmetic operations of addition, subtraction, multiplication and division, the four arithmetic operations are important contents of primary school mathematics and also are the basis for learning other mathematics-related knowledge, so the proficiency and mathematical ability of the primary school mathematics are closely related, and a demonstration device can be used for exercising the four arithmetic operations of mathematics to realize rapid learning activities.

When the demonstration device for the four fundamental operations of mathematics is used at present, although the demonstration device can well realize the quick learning of the four fundamental operations of mathematics, children forget the four fundamental operations of mathematics sometimes to cause calculation errors, so that comparison learning of the four fundamental operations of mathematics is often required, and the four fundamental operations of mathematics are more comfortable to watch when fixed measures or adjusting measures are lacked in the placement of the four fundamental operations of mathematics at present.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, a mathematics four fundamental operations demonstration device is provided, and the problems that when the mathematics four fundamental operations demonstration device is used, although the demonstration device can well realize quick learning of mathematics four fundamental operations, children forget the rules of the mathematics four fundamental operations sometimes to cause calculation errors, comparison learning of the mathematics four fundamental operations table is often needed, when the existing mathematical four fundamental operations table is placed, fixing measures or adjusting measures are lacked, the problem that the mathematical four fundamental operations table is more comfortable to watch is solved, and the effects that the mathematical four fundamental operations table is quickly clamped, fixedly placed and the watching angle is quickly adjusted are achieved.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a mathematics demonstration device for four fundamental operations, which comprises a demonstration device main body and an auxiliary clamping device, wherein the upper end of the rear side of the demonstration device main body is provided with a display screen, the top of the left side of the demonstration device main body is provided with a keyboard, the right side of the keyboard is relatively provided with a writing board, and a writing pen is relatively placed on the right side of the writing board, the auxiliary clamping device is arranged on the right side of the demonstration device main body, the auxiliary clamping device comprises a fixed plate, a bearing plate, a worm wheel, a rotating plate, a guide rod, a clamping frame and a rotating assembly, the left side of the fixed plate is fixedly connected with the demonstration device main body, the right side of the fixed plate is spliced with the bearing plate, the inner part of the bearing plate is rotatably connected with the worm, the left side of the worm is meshed with the worm wheel, the rear side of the worm wheel is connected with the rotating plate, and the upper side and the lower side of the rotating plate are rotatably connected with the guide rod, the side, far away from the rotating plate, of the guide rod is rotatably connected with the clamping frame, the front side of the clamping frame is slidably connected with the bearing plate, and a rotating assembly is arranged on the front side of the clamping frame.

Further, the rotating assembly comprises a telescopic rod, auxiliary blocks, a rotary table, a locking shaft, a shell and a pressure spring, the left side and the right side of the telescopic rod are connected with the clamping frame in a rotating mode, the auxiliary blocks are arranged at the left end and the right end of the telescopic rod respectively, the rotary table is connected with the right side of the telescopic rod, the upper end of the rotary table is connected with the locking shaft in a plugging mode, the locking shaft is installed at the upper end of the shell, the pressure spring is arranged on the outer surface of the middle of the locking shaft, and the left side of the shell is fixedly connected with the clamping frame.

Furthermore, one side of the worm extends to the outer side of the bearing plate, and anti-skid grains are formed in the extending position of the worm.

Furthermore, the worm wheel and the rotating plate are oppositely arranged in front and back, and the outer surface of the rotating plate is smooth and has no barbs.

Furthermore, the guide rod and the clamping frame are symmetrically arranged along the left side and the right side inside the bearing plate, and the upper end and the lower end of the clamping frame are connected with the bearing plate in a sliding mode.

Furthermore, the auxiliary blocks are symmetrically arranged along the left side and the right side of the telescopic rod, and one side, close to the middle of the telescopic rod, of each auxiliary block is provided with a groove.

Furthermore, a plurality of semi-arc-shaped grooves are formed in the outer surface of the rotary disc at equal intervals, and the grooves formed in the rotary disc are arranged at equal intervals along a circular track.

Furthermore, the locking shaft and the pressure spring are arranged along the same vertical straight line in the shell, and the inserting position of the lower end of the locking shaft and the rotary table is smooth.

Further, the locking shaft is made of stainless steel.

Furthermore, the pressure spring is made of piano wire materials.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

the method has the advantages that: the utility model discloses a mathematics demonstration device of calculating on four fundamental principles, through having set up supplementary clamping device, under worm and worm wheel drive promptly, the commentaries on classics board rotates the pulling of both sides guide arm about realizing, and under the pulling through the guide arm, the holding frame is then portable, realizes that the swift centre gripping of mathematics table of calculating on four fundamental principles is placed, guarantees the stability that the table of calculating was watched on four fundamental principles of mathematics to reach the advantage that the swift centre gripping of mathematics table of calculating was placed.

The method has the advantages that: the utility model discloses a mathematics four fundamental operations presentation device rotates with the telescopic link through rotating the inside auxiliary block of subassembly and drive down in the holding frame front side, can drive the carousel and rotate in step, accomplishes the back when the adjustment, and the carousel can realize the locking activity under locking axle and pressure spring cooperation, and then guarantees the firm that the adjustment of mathematics four fundamental operations table was watched to reached the swift adjustment of mathematics four fundamental operations table viewing angle, guaranteed that child watches comfortable advantage.

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 top view of the present invention;

FIG. 3 is a schematic view of the top view of the auxiliary clamping device according to the present invention;

FIG. 4 is a schematic structural view of a three-dimensional portion of the auxiliary clamping device of the present invention;

fig. 5 is a front view of the rotating assembly of the present invention;

fig. 6 is a schematic view of the right-side cross-sectional structure of the rotating assembly of the present invention.

In the figure: the demonstration device comprises a demonstration device main body-1, a display screen-2, a keyboard-3, a writing board-4, a writing pen-5, an auxiliary clamping device-6, a fixing plate-61, a bearing plate-62, a worm-63, a worm wheel-64, a rotating plate-65, a guide rod-66, a clamping frame-67, a rotating assembly-68, a telescopic rod-681, an auxiliary block-682, a rotary disc-683, a locking shaft-684, a shell-685 and a pressure spring-686.

Detailed Description

The present invention will be described in detail with reference to the accompanying fig. 1-6, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1 and 2, the utility model provides a mathematics four fundamental operations presentation device here through the improvement, including presentation device main part 1 and supplementary clamping device 6, the upper end of the rear side of presentation device main part 1 is provided with display screen 2 to the top is provided with keyboard 3 in the 1 left side of presentation device main part, and 3 right sides of keyboard are provided with clipboard 4 relatively, and clipboard 4 right sides have placed writing pen 5 relatively.

Referring to fig. 3 and 4, the present invention provides a mathematical four fundamental operations demonstration apparatus through improvement, an auxiliary clamping device 6 is disposed on the right side of a demonstration apparatus main body 1, the auxiliary clamping device 6 comprises a fixing plate 61, a receiving plate 62, a worm 63, a worm wheel 64, a rotating plate 65, a guide rod 66, a clamping frame 67 and a rotating component 68, the left side of the fixing plate 61 is fixedly connected with the demonstration apparatus main body 1, and the right side of the fixing plate 61 is inserted with the receiving plate 62, so that the fixing plate 61 realizes rapid installation or disassembly of the clamping fixing device 6, the receiving plate 62 is rotatably connected with the worm 63 inside, and the worm wheel 64 is engaged with the left side of the worm 63, so that the receiving plate 62 ensures the firm installation of internal parts, the rotating plate 65 is connected with the rear side of the worm wheel 64, and the guide rod 66 is rotatably connected with the upper and lower sides of the rotating plate 65, one side of the guide rod 66 far away from the rotating plate 65 is rotatably connected with the clamping frame 67, make guide arm 66 realize swift drive activity, holding frame 67 front side and accept 62 sliding connection of board, and holding frame 67 front side is provided with runner assembly 68, make and realize rotating the regulation activity through runner assembly 68, worm 63 one side extends to the board 62 outside of accepting, and worm 63 extends the department and has seted up anti-skidding line, make the user be difficult for taking off the hand when rotating, worm wheel 64 and commentaries on classics board 65 front and back relative setting, and change the smooth nothing barb of board 65 surface, make change board 65 rotate smooth not blocking, guide arm 66 and holding frame 67 all follow the board 62 inside left and right sides symmetrical setting of accepting, and both ends all with accepting board 62 looks sliding connection about holding frame 67, make the stability of guaranteeing holding frame 67 removal centre gripping activity.

Referring to fig. 5 and 6, the present invention provides a mathematical four fundamental operations demonstration apparatus through improvement, wherein the rotation assembly 68 includes a telescopic bar 681, an auxiliary block 682, a rotary disc 683, a locking shaft 684, a housing 685 and a compression spring 686, the left and right sides of the telescopic bar 681 are rotatably connected to the holding frame 67, the left and right ends of the telescopic bar 681 are respectively provided with the auxiliary block 682, so that the telescopic bar 681 drives the auxiliary block 682 to rotate and adjust, the rotary disc 683 is connected to the right side of the telescopic bar 681, the upper end of the rotary disc 683 is inserted into the locking shaft 684, so that the rotary disc 683 drives the telescopic bar 681 to rotate synchronously, the locking shaft 684 is mounted to the upper end of the housing 685, the outer surface of the middle of the locking shaft 684 is provided with the compression spring 686, so that the compression spring 686 enhances the locking firmness of the locking shaft 684, the left side of the housing 685 is fixedly connected to the holding frame 67, the auxiliary block 682 is symmetrically arranged along the left and the side of the telescopic bar 681 is provided with a groove, the auxiliary block 682 is enabled to realize auxiliary clamping and reinforcing activities, a plurality of semi-arc-shaped grooves are formed in the outer surface of the rotary disc 683 at equal intervals, the grooves are formed in the rotary disc 683 at equal intervals along a circular track, the rotary disc 683 is enabled to realize rotation adjustment locking activities, the locking shaft 684 and the pressure spring 686 are arranged along the same vertical straight line in the shell 685, the splicing part of the lower end of the locking shaft 684 and the rotary disc 683 is smooth, the locking shaft 684 and the rotary disc 683 are locked and matched smoothly and are not clamped, the locking shaft 684 is made of stainless steel, and the pressure spring 686 is made of piano steel wires.

The pressure spring 686 of this patent: the spring is a spiral spring bearing pressure, the section of the material used by the spring is mostly circular, and the spring is also rolled by rectangular and multi-strand steel ropes, the spring is generally equidistant, and the shape of the compression spring is as follows: the compression spring is cylindrical, conical, convex and concave, and a small number of non-circular shapes, and the like, a certain gap is reserved between the rings of the compression spring, and the compression spring contracts and deforms when subjected to external load, so that deformation energy is stored.

The utility model discloses a mathematical four fundamental operations demonstration device, the working principle is as follows;

firstly, when the mathematics four fundamental operations are required to be learnt, the demonstration device main body 1 is opened, the display screen 2 arranged at the upper end of the rear side of the demonstration device main body 1 can be lightened, then a child can select a learning mode by taking the writing pen 5 oppositely arranged at the right side of the writing board 4, when the mathematics four fundamental operations are required to be learnt, the writing submission of the operation process on the writing board 4 can be carried out through the questions displayed on the display screen 2, after the submission is finished, the demonstration device main body 1 can modify the operation process to indicate errors of the operation process for the child, and thus the child can know the knowledge of the mathematics four fundamental operations more;

secondly, when the demonstration device for the four fundamental operations of mathematics is used, although the demonstration device can well realize the quick learning of the four fundamental operations of mathematics, sometimes children forget the four fundamental operations of mathematics to cause calculation errors, so that the comparison learning of the four fundamental operations of mathematics is often needed, and when the four fundamental operations of mathematics are not placed in the prior art, fixed measures or adjusting measures are lacked, so that the four fundamental operations of mathematics can be more comfortably watched;

thirdly, by arranging the auxiliary clamping device 6 at the right side of the demonstration device body 1, namely, the worm 63 rotatably connected with the inside of the bearing plate 62 is rotated by an adult to drive the worm wheel 64 meshed with the left side of the worm 63 to rotate, the rotating plate 65 arranged opposite to the worm wheel 64 in the front and back direction is synchronously rotated along with the rotation of the worm wheel 64, when the rotating plate 65 rotates to realize the pulling of the upper and lower sides of the rotating connecting guide rod 66, the guide rod 66 can realize the pulling of the other side of the rotating connecting clamping frame 67, the clamping frame 67 can move towards the middle of the bearing plate 62 to realize the quick clamping movement of the arithmetic table of the four fundamental rules of mathematics, when the auxiliary clamping device 6 is not needed, the bearing plate 62 is pulled to release the insertion between the bearing plate 62 and the fixing plate 61, the disassembly can be completed, and the advantage of rapid clamping and placement of the mathematical four-rule operation table can be achieved;

fourthly, when the viewing angle of the mathematical four fundamental operations table needs to be adjusted, the mathematical four fundamental operations table is pulled to drive the auxiliary block 682 and the telescopic link 681 arranged in the rotating component 68 at the front side of the clamping frame 67 to rotate, and the rotary disc 683 connected with the right side of the telescopic link 681 can synchronously rotate along with the rotation of the telescopic link 681, and the locking shaft 684 spliced with the upper end of the rotary disc 683 can realize reciprocating splicing movement with the rotary disc 683 under the matching of the semi-arc grooves arranged at equal intervals at the outer side of the rotary disc 683, and the locking shaft 684 can realize firm locking under the elastic force of the pressure spring 686 arranged at the outer side of the middle part, when the mathematical four fundamental operations table is adjusted to a proper position, the pulling of the mathematical four fundamental operations table is stopped, so that children can be ensured to be comfortable when viewing the mathematical four fundamental operations table, and the auxiliary block 682 arranged in the rotating component 68 can ensure that the mathematical four fundamental operations table is clamped and placed firmly, the watch is not easy to fall off, so that the watch angle of the mathematical four-rule operation table can be quickly adjusted, and the comfortable watch of children can be ensured.

The basic principle and the main characteristics of the utility model and the advantages of the utility model have been shown and described above, and the utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the record of the description with the drawing, and the concrete connection mode of each part all adopts conventional means such as ripe bolt rivet among the prior art, welding, and machinery, part and equipment all adopt prior art, conventional model, and conventional connection mode in the prior art is adopted in addition to circuit connection, and the details are not repeated here.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented 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 (8)

1. A mathematics four fundamental operations demonstration device comprises a demonstration device body (1), wherein a display screen (2) is arranged at the upper end of the rear side of the demonstration device body (1), a keyboard (3) is arranged at the top of the left side of the demonstration device body (1), a writing board (4) is oppositely arranged on the right side of the keyboard (3), and a writing pen (5) is oppositely arranged on the right side of the writing board (4);

the method is characterized in that: the demonstration device is characterized by further comprising an auxiliary clamping device (6), the auxiliary clamping device (6) is arranged on the right side of the demonstration device body (1), the auxiliary clamping device (6) comprises a fixing plate (61), a bearing plate (62), a worm (63), a worm wheel (64), a rotating plate (65), a guide rod (66), a clamping frame (67) and a rotating assembly (68), the left side of the fixing plate (61) is fixedly connected with the demonstration device body (1), the right side of the fixing plate (61) is connected with the bearing plate (62) in an inserting mode, the worm (63) is rotatably connected inside the bearing plate (62), the worm wheel (64) is meshed and connected with the left side of the worm (63), the rotating plate (65) is connected with the rear side of the worm wheel (64), the guide rod (66) is rotatably connected with the guide rod (66) on the upper side and the lower side of the rotating plate (65), one side, far away from the rotating plate (65), is rotatably connected with the clamping frame (67), the front side of the clamping frame (67) is connected with the bearing plate (62) in a sliding mode, and a rotating assembly (68) is arranged on the front side of the clamping frame (67).

2. The mathematical four-fundamental-operation demonstration apparatus according to claim 1, wherein: the rotating assembly (68) comprises a telescopic rod (681), an auxiliary block (682), a rotary table (683), a locking shaft (684), a shell (685) and a pressure spring (686), the left side and the right side of the telescopic rod (681) are rotatably connected with a clamping frame (67), the left end and the right end of the telescopic rod (681) are respectively provided with the auxiliary block (682), the rotary table (683) is connected with the right side of the telescopic rod (681), the upper end of the rotary table (683) is spliced with the locking shaft (684), the locking shaft (684) is installed at the upper end of the shell (685), the outer surface of the middle part of the locking shaft (684) is provided with the pressure spring (686), and the left side of the shell (685) is fixedly connected with the clamping frame (67).

3. The mathematical four-fundamental-operation demonstration apparatus according to claim 1, wherein: one side of the worm (63) extends to the outer side of the bearing plate (62), and anti-skid grains are arranged at the extending position of the worm (63).

4. The mathematical four-fundamental-operation demonstration apparatus according to claim 1, wherein: the worm wheel (64) and the rotating plate (65) are arranged in a front-back opposite mode, and the outer surface of the rotating plate (65) is smooth and has no barbs.

5. The mathematical four-fundamental-operation demonstration apparatus according to claim 1, wherein: the guide rod (66) and the clamping frame (67) are symmetrically arranged along the left and right sides of the interior of the bearing plate (62), and the upper end and the lower end of the clamping frame (67) are connected with the bearing plate (62) in a sliding mode.

6. A mathematical four-fundamental operation demonstration apparatus according to claim 2, wherein: the auxiliary blocks (682) are symmetrically arranged along the left side and the right side of the telescopic rod (681), and one side, close to the middle of the telescopic rod (681), of the auxiliary blocks (682) is provided with a groove.

7. A mathematical four-fundamental operation demonstration apparatus according to claim 2, wherein: the outer surface of the rotary disc (683) is equidistantly provided with a plurality of semi-arc grooves, and the grooves arranged on the rotary disc (683) are equidistantly arranged along a circular track.

8. A mathematical four-fundamental operation demonstration apparatus according to claim 2, wherein: the locking shaft (684) and the pressure spring (686) are both vertically arranged along the same straight line in the shell (685), and the splicing part of the lower end of the locking shaft (684) and the rotary disc (683) is smooth.

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