CN211441717U

CN211441717U - Writing blackboard convenient to accomodate

Info

Publication number: CN211441717U
Application number: CN201921202603.4U
Authority: CN
Inventors: 孙童
Original assignee: Wuhan Baijia Wuyou Technology Co ltd
Current assignee: Wuhan Baijia Wuyou Technology Co ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-09-08
Anticipated expiration: 2029-07-29

Abstract

The utility model relates to an education training technical field just discloses a blackboard of writing convenient to accomodate, be the blackboard of one including quantity for two erection columns and quantity. This blackboard of writing convenient to accomodate, make the threaded rod rotate through rotating the worm, the threaded rod drives the movable block and moves down, thereby can receive the blackboard when need not use the blackboard, be convenient for accomodate, and pass through the runner, the activity groove, connecting rod and movable block make can very convenient upset when the blackboard needs to overturn, make the inside that the runner is located the draw-in groove after the one hundred eighty degrees that overturns, the runner this moment, connecting rod and movable block closely laminate with the draw-in groove under coupling spring's effect, if there is not blackboard under the effect of great external force fixed under the effect of runner and draw-in groove, the device has guaranteed through improving traditional portable blackboard that the blackboard can normally overturn and use and can adjust the height of blackboard when fixed, be convenient for accomodate.

Description

Writing blackboard convenient to accomodate

Technical Field

The utility model relates to an education and training technical field specifically is a blackboard of writing convenient to accomodate.

Background

The blackboard is not specially designated as a black board, the blackboard is a plane which can be repeatedly written by chalk in the traditional sense, the board is hard and is mainly used for teaching, the blackboard is generally made of wood boards or ground glass and can be written on by specific writing materials such as chalk and is mostly black, dark green, white or beige, before the invention of characters, people find that charcoal can be used for drawing, ancient murals can be found in ancient rock caverns in Europe, the rock wall on which the murals are drawn can be called as the blackboard in the traditional sense, ancient teaching in China mainly uses an article called as a sand table, hardwoods are repeatedly written on sandy soil, but the hardwoods cannot be considered as the blackboard because the sandy soil is soft, the blackboard cannot be made of blocks in the middle century, people find that the blocky blackboard is made of lime and water by mixing, and write on the surface of the hard dark object by a method similar to a charcoal pen, by the 19 th century, people coated the surfaces of wood boards with black paint to protect the wood boards from corrosion.

The portable blackboard on the market is very common in the life, no matter be the company, school or training mechanism all often use it, portable blackboard has convenient to use and the advantage of being convenient for remove, and portable blackboard is convertible blackboard for the majority, still can write the another side after having written the one side, use convenience very, but this kind of portable blackboard can let the better height of watching the blackboard of people be higher in order to guarantee, and can be fixed can be in the bottom installation horizontal pole of mount in order to be used for fixed blackboard after the upset in order to guarantee the blackboard, but this kind of portable blackboard has a volume great, the space that is not utilized is great, the space that occupies after finishing using is not convenient for accomodate greatly, so provide the blackboard of writing of being convenient for accomodate and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a writing blackboard convenient to accomodate possesses advantages such as being convenient for accomodate, has solved the problem of being not convenient for accomodate.

(II) technical scheme

For the purpose of realizing above-mentioned be convenient for accomodate, the utility model provides a following technical scheme: a writing blackboard convenient to store comprises two mounting columns and one blackboard, wherein the left side and the right side of the blackboard are respectively provided with two connecting grooves, a guide shaft is fixedly connected between the upper side wall and the lower side wall in each connecting groove, a mounting rod is fixedly connected between the two mounting columns, a lifting cavity and a hollow cavity are sequentially formed in each mounting column from top to bottom, the bottom wall in each hollow cavity is movably connected with a threaded rod which extends into the lifting cavity and is movably connected with the top wall in the lifting cavity, the inner side wall in each hollow cavity is movably connected with a worm which is matched with the threaded rod and extends to the outer part of the mounting column, a moving block which is positioned in the lifting cavity and is matched with the threaded rod is sleeved outside the threaded rod, one side, opposite to the moving block, of the left side and the right side is respectively provided with a moving groove, one side, opposite to, the inside swing joint of draw-in groove has the runner, and the inside swing joint of runner has the connecting rod that extends to the erection column outside and extend to the spread groove inside, and one side fixedly connected with that the connecting rod is close to the blackboard cup joints at the outside movable block of guiding axle, and the connecting spring that is connected with movable block and spread groove inside wall has been cup jointed to the outside of guiding axle, the bottom fixedly connected with truckle of erection column.

Preferably, the movable groove is an elliptical groove, and the width of the movable groove is equal to the diameter of the rotating wheel.

Preferably, the number of the clamping grooves is four, the four clamping grooves are divided into a left group and a right group, the clamping grooves are located between the upper side wall and the lower side wall of the movable groove, the clamping grooves are circular grooves, and the diameters of the clamping grooves are equal to the diameter of the rotating wheel.

Preferably, the caster wheel is four in total, and four the caster wheel divide into two sets of left and right sides, and a set of two the caster wheel is the symmetric distribution.

Preferably, the blackboard is a rectangular board, and the length of the blackboard is smaller than the distance between the two mounting columns.

Preferably, the rotating wheels are four in number, the four rotating wheels are divided into a left group and a right group, and one group of two rotating wheels are symmetrically distributed.

(III) advantageous effects

Compared with the prior art, the utility model provides a writing blackboard convenient to accomodate possesses following beneficial effect:

the writing blackboard convenient to store is characterized in that the threaded rod rotates by rotating the worm, the threaded rod drives the moving block to move downwards, thereby the blackboard can be collected when not in use and is convenient to be collected, and the blackboard can be turned over very conveniently when needing to be turned over through the rotating wheel, the movable groove, the connecting rod and the movable block, after the blackboard is turned over by one hundred eighty degrees, the rotating wheel is positioned in the clamping groove, at the moment, the rotating wheel, the connecting rod and the movable block are tightly attached to the clamping groove under the action of the connecting spring, if the blackboard is fixed under the action of the rotating wheel and the clamping groove under the action of no larger external force, the device has guaranteed through improving traditional portable blackboard that the blackboard can normally overturn and use and can adjust the height of blackboard when fixed, not only is convenient for accomodate, and more enough according to the height of on-the-spot condition change show when needs.

Drawings

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

FIG. 2 is a left side sectional view of the structure of the present invention;

fig. 3 is an enlarged schematic view of a position a in the structure diagram 1 of the present invention.

In the figure: the blackboard eraser comprises an installation column 1, an installation rod 2, a lifting cavity 3, a hollow cavity 4, a worm 5, a threaded rod 6, a moving block 7, a movable groove 8, a clamping groove 9, a rotating wheel 10, a connecting rod 11, a connecting groove 12, a movable block 13, a guide shaft 14, a connecting spring 15, a blackboard 16 and a caster 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, 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.

Referring to fig. 1-3, a writing blackboard convenient to store comprises two mounting posts 1 and one blackboard 16, wherein the left side and the right side of the blackboard 16 are respectively provided with two connecting grooves 12, the blackboard 16 is a rectangular plate, the length of the blackboard 16 is smaller than the distance between the two mounting posts 1, a guide shaft 14 is fixedly connected between the upper side wall and the lower side wall in the connecting groove 12, a mounting rod 2 is fixedly connected between the two mounting posts 1, a lifting cavity 3 and a hollow cavity 4 are sequentially arranged in the mounting posts 1 from top to bottom, a threaded rod 6 which extends into the lifting cavity 3 and is movably connected with the top wall in the lifting cavity 3 is movably connected with the bottom wall in the hollow cavity 4, a worm 5 which is matched with the threaded rod 6 and extends to the outside of the mounting posts 1 is movably connected with the inner side wall in the hollow cavity 4, a moving block 7 which is positioned in the lifting cavity 3 and is matched with the threaded rod 6 is sleeved, the opposite sides of the left and right moving blocks 7 are respectively provided with a moving groove 8, the moving grooves 8 are oval grooves, the width of the moving groove 8 is equal to the diameter of a rotating wheel 10, the opposite sides of the left and right moving blocks 7 are respectively provided with a clamping groove 9 communicated with the moving grooves 8, the number of the clamping grooves 9 is four, four clamping grooves 9 are divided into a left group and a right group, one group of two clamping grooves 9 is positioned between the upper side wall and the lower side wall of one moving groove 8, the clamping grooves 9 are circular grooves, the diameter of the clamping grooves 9 is equal to the diameter of the rotating wheel 10, the inside of the clamping grooves 9 is movably connected with the rotating wheels 10, the number of the rotating wheels 10 is four, the four rotating wheels 10 are divided into a left group and a right group, one group of two rotating wheels 10 are symmetrically distributed, the inside of the rotating wheels 10 is movably connected with a, the connecting spring 15 connected with the movable block 13 and the inner side wall of the groove 12 is sleeved outside the guide shaft 14, the bottom of the mounting column 1 is fixedly connected with four trundles 17, the four trundles 17 are divided into a left group and a right group, one group of two trundles 17 are symmetrically distributed, the threaded rod 6 rotates by rotating the worm 5, the threaded rod 6 drives the movable block 7 to move downwards, so that the blackboard 16 can be folded when the blackboard 16 is not needed to be used and is convenient to store, the connecting rod 11 and the movable block 13 can be conveniently turned over when the blackboard 16 needs to be turned over through the runner 10, the movable groove 8, the connecting rod 11 and the movable block 13, the runner 10 is positioned inside the clamping groove 9 after the blackboard 16 is turned over by one hundred eighty degrees, at the moment, the runner 10, the connecting rod 11 and the movable block 13 are tightly attached to the clamping groove 9 under the action of the connecting spring 15, if the blackboard 16 is fixed under the, the device has guaranteed through improving traditional portable blackboard that 16 can normally overturn the use and can adjust blackboard 16's height when fixed, not only be convenient for accomodate, and more enough according to the height of on-the-spot condition change show when needs.

In conclusion, the writing blackboard convenient to store can be conveniently stored by rotating the worm 5 to enable the threaded rod 6 to rotate and the threaded rod 6 to drive the moving block 7 to move downwards, so that the blackboard 16 can be stored when the blackboard 16 is not needed, the blackboard 16 can be very conveniently turned over when the blackboard 16 needs to be turned over through the rotating wheel 10, the moving groove 8, the connecting rod 11 and the moving block 13, the rotating wheel 10 is positioned in the clamping groove 9 after the blackboard 16 is turned over by one hundred eighty degrees, the rotating wheel 10, the connecting rod 11 and the moving block 13 are tightly attached to the clamping groove 9 under the action of the connecting spring 15, if the blackboard 16 is fixed under the action of the rotating wheel 10 and the clamping groove 9 under the action of no large external force, the device can ensure that the blackboard 16 can be normally turned over and used and fixed by improving the traditional movable blackboard, can adjust the height of the blackboard 16 and is convenient to store, and the height of the display can be changed according to the field situation when needed, so that the problem of inconvenient storage is solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a writing blackboard convenient to accomodate, is installing post (1) and blackboard (16) that quantity is one that quantity is two, its characterized in that: the blackboard is characterized in that the left side and the right side of the blackboard (16) are respectively provided with two connecting grooves (12), guide shafts (14) are fixedly connected between the upper side wall and the lower side wall in the grooves of the connecting grooves (12), mounting rods (2) are fixedly connected between the two mounting columns (1), a lifting cavity (3) and a middle cavity (4) are sequentially arranged in the mounting columns (1) from top to bottom, the bottom wall in the cavity of the middle cavity (4) is movably connected with a threaded rod (6) which extends into the lifting cavity (3) and is movably connected with the top wall in the cavity of the lifting cavity (3), the inner side wall in the cavity of the middle cavity (4) is movably connected with a worm (5) which is matched with the threaded rod (6) and extends to the outside of the mounting columns (1), the outside of the threaded rod (6) is sleeved with a moving block (7) which is positioned in the lifting cavity (3) and is matched with, the left and right sides draw-in groove (9) that are linked together with activity groove (8) are all seted up to the relative one side of movable block (7), and the inside swing joint of draw-in groove (9) has runner (10), and the inside swing joint of runner (10) has connecting rod (11) that extend to erection column (1) outside and extend to spread groove (12) inside, and connecting rod (11) are close to one side fixedly connected with of blackboard (16) and cup joint at the outside movable block (13) of guiding axle (14), and the outside of guiding axle (14) has cup jointed connecting spring (15) that are connected with movable block (13) and spread groove (12) inslot lateral wall, the bottom fixedly connected with truckle (17) of erection column (1).

2. A writing blackboard convenient to store as claimed in claim 1, characterized in that: the movable groove (8) is an elliptical groove, and the width of the movable groove (8) is equal to the diameter of the rotating wheel (10).

3. A writing blackboard convenient to store as claimed in claim 1, characterized in that: the clamping grooves (9) are four in number, the clamping grooves (9) are divided into a left group and a right group, the clamping grooves (9) are located between the upper side wall and the lower side wall of the movable groove (8), the clamping grooves (9) are circular grooves, and the diameters of the clamping grooves (9) are equal to the diameters of the rotating wheels (10).

4. A writing blackboard convenient to store as claimed in claim 1, characterized in that: the caster wheels (17) are four in number, the four caster wheels (17) are divided into a left group and a right group, and the caster wheels (17) are symmetrically distributed.

5. A writing blackboard convenient to store as claimed in claim 1, characterized in that: the blackboard (16) is a rectangular plate, and the length of the blackboard (16) is smaller than the distance between the two mounting columns (1).

6. A writing blackboard convenient to store as claimed in claim 1, characterized in that: the number of the rotating wheels (10) is four, the four rotating wheels (10) are divided into a left group and a right group, and one group of two rotating wheels (10) are symmetrically distributed.