CN111231548A

CN111231548A - Teaching device

Info

Publication number: CN111231548A
Application number: CN202010097458.9A
Authority: CN
Inventors: 张传水; 万琛; 冯昀辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-06-05
Anticipated expiration: 2040-02-17
Also published as: CN111231548B

Abstract

The embodiment of the invention discloses a teaching device, which comprises an upright rod and a rotating rod rotating along the central axis of the upright rod, wherein one end of the upright rod is provided with a sucking disc for fixing the upright rod on a blackboard, the upright rod is provided with a control component for controlling the sucking disc to adsorb, one side of the rotating rod, which faces the sucking disc, is slidably connected with a chalk fixing part for fixing chalk so that the chalk rotates along with the rotating rod to draw a circle, one side of the upright rod, which is positioned at the side of the rotating rod, which is far away from the sucking disc, is rotatably connected with an angle disc with a disc-shaped structure, when the teaching device is used, the upright rod is fixed on the blackboard through the sucking disc, the radius of the drawn circle or arc can be further controlled by adjusting the position of the chalk fixing part on the fixing rod, then the rotating rod can realize drawing of, the drawing of the arc of appointed angle is accomplished to the accessible angle scale, need not frequent various instruments of switching during the use, and the drawing is more convenient.

Description

Teaching device

Technical Field

The invention relates to the technical field of teaching, in particular to a teaching device.

Background

The popularization of education can improve the overall quality of labor force, can promote the innovation of science and technology, education plays a direct adjusting role in the economic development of China, along with the continuous development and progress of society, the demands of various industries on talents are increased day by day, and people pay more and more attention to the culture of the talents.

At present when teaching the student, the teaching tool of all kinds can be used frequently, wherein the compasses is exactly a common teaching tool at the teaching in-process, but the compasses that uses in teaching at present, it often can be because the blackboard is too smooth when using, lead to the skew to appear easily in the centre of a circle when drawing the circle, when the arc of needs appointed radius and angle, its cooperation that needs to utilize protractor and ruler just can accomplish the drawing, and the operation is loaded down with trivial details.

Disclosure of Invention

Therefore, the embodiment of the invention provides a teaching device, which aims to solve the problems that in the prior art, a blackboard is smooth, the circle center is easy to change when a circle is drawn, and multiple tools are needed to be used for matching drawing when arcs with specific radiuses and angles are drawn, so that the operation is complicated.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

the utility model provides a teaching device, includes the pole setting and carries out the pivoted dwang with the pole setting the one end department of pole setting is provided with and is used for being fixed in the pole setting the sucking disc on the blackboard, just be provided with in the pole setting and be used for controlling the sucking disc and carry out absorbent control assembly the dwang has the chalk mounting that is used for fixed chalk to make the chalk rotate to carry out the drawing circle along with the dwang towards one side sliding connection of sucking disc the pole setting is located one side rotation that the sucking disc was kept away from to the dwang and is connected discoid angle scale to the structure, be provided with the spacing groove on the angle scale and seted up one side of orientation dwang, just be in one end department sliding connection that the dwang is close to the angle scale is used.

The embodiment of the invention is also characterized in that the edge position of the bottom of the sucker is provided with a plurality of sealing rings which have annular structures and are coaxially arranged with the sucker, and a plurality of rubber sheets for dividing the space between two adjacent sealing rings into a plurality of spaces are arranged between two adjacent sealing rings.

The embodiment of the invention is further characterized in that the control assembly comprises a caulking groove which is arranged on the vertical rod and communicated with the sucker and a control block which is connected to one end of the vertical rod far away from the sucker in a sliding manner through a spring, a piston block used for controlling the sucker to adsorb is connected in the caulking groove in a sliding manner, a first push rod is arranged on one side of the piston block, which is back to the sucker, a second push rod opposite to the first push rod is arranged on one side of the control block, which faces the piston block, a first transmission gear is arranged between the first push rod and the second push rod, and racks meshed with the first transmission gear are arranged on the opposite surfaces of the first push rod and the second push rod.

The embodiment of the invention is further characterized in that two sides of the control block are connected with a fixing upright rod with a U-shaped structure through tension springs, the upright rod is provided with a fixing groove matched with the fixing upright rod, and the distance from the fixing groove to the end of the upright rod is smaller than the length value of the fixing upright rod.

The chalk fixing piece is characterized by comprising a support and an installation rod which is connected to the support in a sliding mode through a spring and used for installing chalk, and a control ring used for adjusting the force applied by the spring to the installation rod is screwed on the support through threads.

The chalk fixing device is characterized in that the rotating rod comprises a fixed rod and a movable rod which is connected to one end of the fixed rod opposite to the vertical rod in a sliding mode, sliding grooves for enabling the supporting columns to slide are formed in the movable rod and the fixed rod, a first limiting assembly used for preventing the chalk fixing piece from being separated from the sliding grooves in the movable rod is arranged at one end of the movable rod opposite to the fixed rod, and a second limiting assembly used for preventing the chalk fixing piece from being separated from the sliding grooves in the fixed rod is arranged at one end of the fixed rod opposite to the movable rod.

The embodiment of the invention is also characterized in that the fixed rod and the movable rod are both provided with scale strips for assisting in drawing circles, and the readings of the scale strips arranged on the movable rod are sequentially reduced from left to right.

The embodiment of the invention is further characterized in that the first limiting component comprises a second transmission gear arranged on the movable rod, a vertical rod and a cross rod, the vertical rod is meshed and connected with the second transmission gear through a rack, the vertical rod is meshed and connected with the second transmission gear through the rack, and a clamping groove matched with the vertical rod is formed in the support.

The embodiment of the invention is further characterized in that the first limiting component and the second limiting component have the same structure.

The embodiment of the invention is also characterized in that two sides of one end of the support towards the vertical rod are both of inclined structures.

The embodiment of the invention has the following advantages:

when the blackboard is used, the upright stanchion can be fixed on the blackboard through the arranged sucking disc, the radius of a circle or an arc to be drawn can be further controlled by adjusting the position of the chalk fixing piece on the fixing rod, then the rotating rod is rotated to draw the circle with the specified radius, for the arc with the specified angle, the zero calibration can be carried out through the angle scale, then the drawing of the arc with the specified angle can be completed according to the angle scale, various tools do not need to be frequently switched during use, and the drawing is more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a partial schematic structural view of a rotating lever according to the present invention;

FIG. 3 is a schematic structural view of a first position-limiting assembly according to the present invention;

FIG. 4 is a perspective view of a mounting bar of the present invention;

FIG. 5 is a perspective view of the suction cup of the present invention;

fig. 6 is an enlarged view of a portion a of fig. 1.

In the figure:

1-erecting a rod; 2-rotating the rod; 3, a sucker; 4-a control component; 5-chalk fixing part; 6-angle scale; 7-a limiting groove; 8-a limiting rod; 9-a sealing ring; 10-a rubber sheet;

201-fixed rod; 202-a movable bar; 203-a sliding groove; 204-a first stop assembly; 205-a second stop assembly; 206-scale bar; 207-second transmission gear; 208-vertical rod; 209-cross bar; 210-a card slot;

401-caulking groove; 402-a control block; 403-a piston block; 404-a first push rod; 405-a second push rod; 406-a first transfer gear; 407-fixed push rod; 408-a fixed slot;

501-a pillar; 502-mounting a pole; 503 — control loop.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, an embodiment of the present invention provides a teaching device, which includes a vertical rod 1 and a rotating rod 2 rotating around a central axis of the vertical rod 1, a suction cup 3 for fixing the vertical rod 1 to a blackboard is disposed at an end of the vertical rod 1, a plurality of sealing rings 9 having an annular structure and disposed coaxially with the suction cup 3 are disposed at a bottom edge of the suction cup 3, a plurality of rubber sheets 10 for partitioning a space between two adjacent sealing rings 9 into a plurality of spaces are disposed between two adjacent sealing rings 9, that is, when in use, the bottom edge of the suction cup 3 can be partitioned into a plurality of separate cavities by matching the rubber sheets 10 with the sealing rings 9, each separate cavity does not affect each other when in use, when in adsorption, a portion with dust and dirt can be isolated, when the vertical rod 1 is further fixed to a blackboard by the suction cup 3, the suction cup 3 can be prevented from adsorbing, the problem of falling off is easy to occur.

As shown in fig. 1, 2 and 4, a control assembly 4 for controlling the suction of the suction cup 3 is arranged on the upright 1, a chalk fixing member 5 for fixing a chalk so that the chalk can rotate along with the rotation of the rotation rod 2 to draw a circle is slidably connected to one side of the rotation rod 2 facing the suction cup 3, the chalk fixing member 5 comprises a support 501 and an installation rod 502 which is slidably connected to the support 501 through a spring and is used for installing the chalk, a control ring 503 for applying force to the installation rod 502 by an adjusting spring is also screwed on the support 501 through a screw thread, the installation rod 502 is preferably made of a plastic material, one end of the installation rod 502, which faces away from the support 501, is provided with a structure for installing the chalk, and is preferably provided with a conical tubular structure, and a plurality of open slots are formed in a pipe wall, that is capable of enlarging an end of the installation rod 502 when the chalk is inserted, the chalk is further convenient for a user to fill in the chalk, and meanwhile, the chalk can be fixed in an auxiliary mode through the elasticity of the material of the installation rod 502.

When using, need fix the chalk in chalk mounting 5 earlier, further then fixed pole setting 1, and adjust the position at chalk mounting 5 place on dwang 2, then can carry out the drawing circle later, at the in-process of drawing the circle, the spring can be applyed and install a power that pops out of pole 502, make the chalk can be under this effect of force, can hug closely the blackboard, thereby realize normal drawing of circle, and when facing the chalk shorter or apply the less clear drawing mark that can't form on the blackboard of power, the position of an end of rotating control ring 503 adjustable spring, because of pillar 501 is unchangeable apart from the distance on blackboard surface, consequently can realize the size of the power that the adjusting spring applyed and install pole 502, guarantee the definition of chalk drawing mark when drawing the circle through the size of adjusting the application of force.

Further in order to ensure that the chalk fixing part 5 cannot slide on the rotating rod 2 when a circle is drawn, a damping sliding pad can be additionally arranged at the sliding connection position of the chalk fixing part 5 and the rotating rod 2 in the actual production process, and the problem that the chalk fixing part 5 cannot slide when the circle is drawn is ensured by increasing the friction force.

As shown in fig. 1, be located dwang 2 and keep away from one side rotation that sucking disc 3 is connected with angle scale 6 for discoid structure in pole setting 1, be provided with on the angle scale 6 towards one side of dwang 2 and seted up spacing groove 7, and be close to an end sliding connection department of angle scale 6 at dwang 2 and be used for carrying out spacing gag lever post 8 with spacing groove 7 gomphosis angle scale 6, angle scale 6 is disc structure, it is preferred that transparent plastics material makes, be convenient for confirm the size of the circular arc of drawing according to the position of dwang 2 when using.

Before use, the limiting rod 8 needs to be embedded into the limiting groove 7, then the rotating rod 2 is rotated to the real point of the drawing, then the position of the angle disc 6 is adjusted to enable the limiting rod 8 to be separated from the embedding of the limiting groove 7, zero calibration of the angle disc 6 can be completed, and further the drawing of the arc length of a specific angle can be completed according to the scales of the angle disc 6.

The control component 4 comprises a caulking groove 401 which is arranged on the upright rod 1 and communicated with the sucker 3 and a control block 402 which is connected to the end of the upright rod 1 far away from the sucker 3 through a spring in a sliding manner, a piston block 403 which is used for controlling the sucker 3 to adsorb is connected in the caulking groove 401 in a sliding manner, a first push rod 404 is arranged on one side of the piston block 403 back to the sucker 3, a second push rod 405 which is opposite to the first push rod 404 is arranged on one side of the control block 402 facing the piston block 403, a first transmission gear 406 is arranged between the first push rod 404 and the second push rod 405, and racks which are meshed with the first transmission gear 406 are arranged on the opposite surfaces of the first push rod 404 and the second push rod 405.

After the first push rod 404 and the second push rod 405 are driven by the first transmission gear 406, the relative or opposite movement can be realized, that is, the first push rod 404 can move upwards when the control block 402 is pressed, so that the first push rod 404 can drive the piston block 403 to move, when the sucker is pressed against a blackboard, the piston block 403 rises to enlarge the space formed by the piston block 403 and the sucker 3, and the outside air cannot enter the sucker 2 because the outside air is blocked by the sucker 3, so that the inside air pressure of the sucker 3 is far less than the outside air pressure, and the fixing of the upright rod 1 can be realized under the outside air pressure acting force.

The two sides of the control block 402 are connected with a fixed push rod 407 with U-shaped structure through a tension spring, and the upright 1 is provided with a fixed groove 408 matching with the fixed push rod 407, the distance from the fixed groove 408 to the end of the upright 1 is less than the length of the fixed push rod 407, the fixed push rod 407 is mainly used for fixing the position of the piston block 403 in the suction process of the suction cup 3, so as to avoid the problem that the control block 402 needs to be pressed by one hand to draw a circle when the circle is drawn, when the control block 402 is pressed to drive the fixed push rod 407 to move to the position of the fixed groove 408, the fixed push rod 407 can be embedded with the fixed groove 408 under the action of the tension spring, the position of the control block 402 is fixed through the embedding of the fixed push rod 407 and the fixed groove 408, and when the suction cup 3 needs to be loosened, the fixed push rod 407 is only pressed to make the fixed push rod 407 separate from, the piston block 403 can then be reset under the force of the spring and the ambient air pressure, allowing the user to remove the device from the blackboard.

As shown in fig. 1, 2, 3, 4 and 6, the rotating rod 2 includes a fixed rod 201 and a movable rod 202 slidably connected to an end of the fixed rod 201 opposite to the vertical rod 1, the movable rod 202 and the fixed rod 201 are both provided with a sliding groove 203 for the pillar 501 to slide, a first limiting component 204 for preventing the chalk fixing member 5 from being separated from the sliding groove 203 on the movable rod 202 is arranged at a section of the movable rod 202 opposite to the fixed rod 201, and a second limiting component 205 for preventing the chalk fixing member 5 from being separated from the sliding groove 203 on the fixed rod 201 is arranged at an end of the fixed rod 201 opposite to the movable rod 202.

During the use, just can take fixed rod 201 out from movable rod 202, then the whole length of expanded dwang 2 further to avoid the problem that can't carry out the drawing to the circle or the circular arc of longer diameter, because of fixed rod 201 and movable rod 202 are sliding connection's structure, consequently in order to prevent it when the drawing, can appear movable rod 202 in the problem of the indiscriminate motion in fixed rod 201, can install set screw in the one end of movable rod 202 back to pole setting 1 additional, realize after adjusting the length of dwang 2, the accessible screw is fixed movable rod 202 and fixed rod 201 relative position.

All be provided with the scale bar 206 that is used for the supplementary circle of drawing on stationary bar 201 and the movable rod 202, the scale bar 206 reading of arranging on the movable rod 202 reduces the setting for turning right from a left side in proper order, slide chalk mounting 5 to the movable rod 202 promptly on, and when adjusting the length of dwang 2, the position of its reading is the position department of scale bar and stationary bar 201 contact on the movable rod 202, through the mode of increment, avoid the user to need calculate the problem that just can obtain specific numerical value when using.

The first limiting component 204 comprises a second transmission gear 207, a vertical rod 208 and a cross rod 209 which are arranged on the movable rod 202, the vertical rod 208 is meshed with the second transmission gear 207 through a rack, the vertical rod 208 is meshed with the second transmission gear 207 through the rack, a clamping groove 210 matched with the vertical rod 208 is formed in the support column 501, the first limiting component 204 and the second limiting component 205 are identical in structure, and two sides of one end, facing the vertical rod 208, of the support column 501 are both of inclined structures.

Here, when the chalk fixing member 5 is slid to the position of the first limiting component 204 or the second limiting component 205, because the end of the pillar 501 is an inclined structure, the chalk fixing member 5 is not hindered by the vertical rod 208, and when the chalk fixing member moves to the position where the vertical rod 208 corresponds to the slot 210, the chalk fixing member 5 can be fixed by the engagement of the vertical rod 208 and the slot 210, which can effectively prevent the chalk fixing member 5 from accidentally disengaging from the fixed rod 201 or the movable rod 202, and when the chalk fixing member 5 needs to be moved from the fixed rod 201 to the movable rod 202 or from the movable rod 202 to the fixed rod 201, the movable rod 202 needs to be firstly stored in the fixed rod 201, at this time, the fixed rod 201 or the movable rod 202 can prop against the cross rod 209 to move the cross rod 209, the movement of the cross rod 209 can drive the movement of the vertical rod 208 through the transmission of the second transmission gear 207, and further can disengage the vertical rod 208 from the engagement with the slot 210, the position of the chalk holder 5 can be freely adjusted.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a teaching device, a serial communication port, include pole setting (1) and carry out pivoted dwang (2) with pole setting (1) the one end department of pole setting (1) is provided with and is used for being fixed in sucking disc (3) on the blackboard with pole setting (1), just be provided with on pole setting (1) and be used for controlling sucking disc (3) to carry out absorbent control assembly (4) dwang (2) have towards one side sliding connection of sucking disc (3) and be used for fixed chalk to make the chalk rotate chalk mounting (5) of drawing the circle along with dwang (2) pole setting (1) lie in one side rotation that sucking disc (3) were kept away from in dwang (2) and be connected with angle scale (6) into discoid structure, be provided with on angle scale (6) towards one side of dwang (2) and seted up spacing groove (7), just one end department sliding connection that dwang (2) are close to angle scale (6) is used for inlaying with spacing groove (7) And a limiting rod (8) for limiting the angle disc (6).

2. A teaching device as claimed in claim 1, wherein a plurality of sealing rings (9) having a ring-shaped structure and coaxially disposed with the suction cup (3) are disposed at the bottom edge position of the suction cup (3), and a plurality of rubber sheets (10) for dividing the space between two adjacent sealing rings (9) into a plurality of spaces are disposed between two adjacent sealing rings (9).

3. An educational device according to claim 1, wherein the control unit (4) comprises a caulking groove (401) provided on the upright (1) and communicating with the suction cup (3) and a control block (402) slidably connected to the end of the upright (1) away from the suction cup (3) by a spring, a piston block (403) for controlling the suction disc (3) to suck is connected in the caulking groove (401) in a sliding way, a first push rod (404) is arranged on one side of the piston block (403) back to the sucker (3), and a second push rod (405) opposite to the first push rod (404) is arranged on one side of the control block (402) facing the piston block (403), a first transmission gear (406) is arranged between the first push rod (404) and the second push rod (405), and racks meshed with the first transmission gear (406) are arranged on the surfaces, opposite to the first push rod (404) and the second push rod (405), of the first push rod and the second push rod.

4. A teaching device according to claim 3, wherein the two sides of the control block (402) are connected with a fixing push rod (407) with U-shaped structure by a tension spring, and the upright (1) is provided with a fixing groove (408) matching with the fixing push rod (407), the distance from the fixing groove (408) to the end of the upright (1) is less than the length of the fixing push rod (407).

5. An educational device according to claim 1, wherein the chalk holder (5) comprises a support column (501) and a mounting rod (502) which is slidably connected to the support column (501) by a spring and is used for mounting chalk, and a control ring (503) which is used for adjusting the force of the spring on the mounting rod (502) is screwed on the support column (501).

6. A teaching device as claimed in claim 1, wherein the rotating rod (2) comprises a fixed rod (201) and a movable rod (202) slidably connected to one end of the fixed rod (201) opposite to the vertical rod (1), the movable rod (202) and the fixed rod (201) are both provided with a sliding groove (203) for sliding a pillar (501) of the chalk fixing member (5), a first limiting component (204) for preventing the chalk fixing member (5) from separating from the sliding groove (203) on the movable rod (202) is arranged at one end of the movable rod (202) opposite to the fixed rod (201), and a second limiting component (205) for preventing the chalk fixing member (5) from separating from the sliding groove (203) on the fixed rod (201) is arranged at one end of the fixed rod (201) facing the movable rod (202).

7. A teaching device according to claim 6, wherein the fixed rod (201) and the movable rod (202) are both provided with scale bars (206) for assisting in drawing circles, and the scale bars (206) arranged on the movable rod (202) are arranged in a manner of descending from left to right.

8. An instructional device as claimed in claim 6, wherein the first position-limiting component (204) comprises a second transmission gear (207) arranged on the movable rod (202), a vertical rod (208) and a cross rod (209), the vertical rod (208) is engaged with the second transmission gear (207) through a rack, and a slot (210) matched with the vertical rod (208) is arranged on the pillar (501).

9. An educational device in accordance with claim 6, wherein the first stop assembly (204) and the second stop assembly (205) are identical in construction.

10. An educational device in accordance with claim 5, wherein the end of the post (501) facing the stem (208) is flanked by an inclined structure.