CN210911786U

CN210911786U - Blackboard easy to adjust

Info

Publication number: CN210911786U
Application number: CN201920516327.2U
Authority: CN
Inventors: 梁彦辉
Original assignee: Anhui Yingkai High Tech Co ltd
Current assignee: Anhui Yingkai High Tech Co ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-07-03
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses an easily adjustable blackboard, which belongs to the field of teaching equipment and comprises a blackboard stabilizing seat, wherein a pair of bearing grooves are formed in the upper end of the blackboard stabilizing seat, the inner ends of the bearing grooves are rotatably connected with an internal thread cylinder through bearings, the inner end of the internal thread cylinder is in threaded connection with an external thread column, the circumferential surface of the internal thread cylinder is fixedly connected with a pair of rotating hands, the upper end of the external thread column is fixedly connected with a connecting block, one ends of the pair of connecting blocks, which are close to each other, are respectively provided with a limiting groove, the inner ends of the limiting grooves are rotatably connected with a limiting connecting rod, a double-sided blackboard is fixedly connected between the ends of the pair of limiting connecting rods, the surface of the limiting connecting rod is fixedly connected with a positioning block, the left end of the positioning block is provided with a plurality of first positioning holes which are uniformly distributed, the left end of the connecting block is provided, the teaching aid is convenient to adjust, has a large area, and effectively improves the teaching quality.

Description

Blackboard easy to adjust

Technical Field

The utility model relates to a teaching equipment field, more specifically say, relate to an easily adjustable blackboard.

Background

The blackboard is not particularly a black board, is a plane which can be repeatedly written by chalk in the traditional sense, has a hard board surface and is mainly used for teaching, is generally made of wood boards or ground glass and the like, and can be written on by using specific writing materials such as chalk and the like.

Because the teacher is different, therefore the teacher's height also can be different, current blackboard majority is fixed height, because the difference of teacher's height, can lead to the fact the difficulty when writing on the blackboard for partial teacher, traditional blackboard can not adjust the height, can not satisfy the teacher's demand of different heights, highly should not adjust, simultaneously because the task of teaching is heavy now, the blackboard area is limited, the blackboard writing is too much, the teacher need clean while writing at the in-process of writing on the blackboard, lead to the student to come to untimely note taking, the difficult angle regulation of current blackboard simultaneously, can not rotate, all in a word, current blackboard is difficult for adjusting, write the area limited, lead to the teaching quality not good.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide an easily adjust blackboard, it is convenient for adjust, and the area is great, has effectively improved the teaching quality.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical scheme

An easily-adjusted blackboard comprises a blackboard stabilizing seat, wherein a pair of bearing grooves are formed in the upper end of the blackboard stabilizing seat in a chiseled mode, the inner end of each bearing groove is rotatably connected with an internal thread cylinder through a bearing, the inner end of the internal thread cylinder is in threaded connection with an external thread column, a pair of rotating hands are fixedly connected to the circumferential surface of the internal thread cylinder, a connecting block is fixedly connected to the upper end of the external thread column, a limiting groove is formed in one end, close to the connecting block, of each connecting block in a chiseled mode, a limiting connecting rod is rotatably connected to the inner end of each limiting groove, a double-faced blackboard is fixedly connected between the ends, close to the limiting connecting rods in a pair, the surface of each limiting connecting rod is fixedly connected with a positioning block, the positioning block is located on the outer side of the limiting groove, a plurality of first positioning holes which are uniformly distributed are formed in the left end of the positioning block, and positioning pins are, the teaching aid is convenient to adjust, has a large area, and effectively improves the teaching quality.

Furthermore, one the right-hand member fixedly connected with fixing base of connecting block, the upper end of fixing base is fixedly connected with fixed block and magnet piece from the left hand right side in proper order, the upper end of fixed block is opened and is dug the chalk groove that has a plurality of evenly distributed, the upper end magnetism of magnet piece is connected with the metal blackboard eraser, is convenient for place the chalk, is convenient for install simultaneously and takes off the metal blackboard eraser.

Furthermore, the surface of the rotating hand is wrapped with a rubber pad, anti-slip lines are engraved on the rubber pad, the rubber pad increases the hand feeling comfort level, and the anti-slip lines increase the friction, so that the hand is not easy to fall off.

Furthermore, an inner ring of the bearing is in interference fit with the internal thread cylinder, and an outer ring of the bearing is in interference fit with the bearing groove.

Furthermore, the inner walls of the second positioning hole and the first positioning hole are both adhered with a sponge cushion through nylon pastes, the sponge cushion increases friction, the inserting connection is more firm, and the nylon pastes the sponge cushion to be convenient to replace.

Furthermore, the four-corner edge ends of the double-sided blackboard are fixedly connected with metal wrapping edges, so that the double-sided blackboard has a good protection effect and the appearance ornamental performance is improved.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) the scheme is convenient to adjust, has larger area and effectively improves the teaching quality.

(2) The chalk box comprises a connecting block and is characterized in that a fixing seat is fixedly connected to the right end of the connecting block, a fixing block and a magnet block are fixedly connected to the upper end of the fixing seat from left to right in sequence, a plurality of uniformly distributed chalk grooves are formed in the upper end of the fixing block, a metal blackboard eraser is connected to the upper end of the magnet block in a magnetic mode, chalk is convenient to place, and the metal blackboard eraser is convenient to install and take down.

(3) The surface of the rotating hand is wrapped with a rubber pad, anti-slip lines are carved on the rubber pad, the rubber pad increases the hand feeling comfort level, and the anti-slip lines increase the friction, so that the hand is not easy to fall off.

(4) The inner ring of the bearing is in interference fit with the internal thread cylinder, and the outer ring of the bearing is in interference fit with the bearing groove.

(5) The inner walls of the second positioning hole and the first positioning hole are both adhered to form a spongy cushion through nylon pastes, the spongy cushion increases friction, the inserting connection is more firm, and the nylon pastes the spongy cushion to be convenient to replace.

(6) The four-corner edge of the double-sided blackboard is fixedly connected with the metal wrapping edges, so that the double-sided blackboard has a good protection effect and the appearance ornamental performance is improved.

Drawings

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

FIG. 2 is a schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the structure at B in FIG. 1;

fig. 4 is a schematic structural diagram at C in fig. 1.

The reference numbers in the figures illustrate:

the blackboard eraser comprises a blackboard stabilizing seat 1, a bearing groove 2, a bearing 3, an internal thread cylinder 4, a rotary handle 5, an external thread column 6, a connecting block 7, a limiting groove 8, a limiting connecting rod 9, a double-sided blackboard 10, a positioning block 11, a first positioning hole 12, a second positioning hole 13, a positioning pin 14, a metal edge cover 15, a fixing seat 16, a fixing block 17, a magnet block 18, a chalk groove 19 and a metal blackboard eraser 20.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-4, an easily adjustable blackboard comprises a blackboard stabilizing base 1, a pair of bearing grooves 2 is chiseled at the upper end of the blackboard stabilizing base 1, the inner ends of the bearing grooves 2 are rotatably connected with an internal thread cylinder 4 through a bearing 3, an inner ring of the bearing 3 is in interference fit with the internal thread cylinder 4, an outer ring of the bearing 3 is in interference fit with the bearing grooves 2, the bearing 3 is not only used for supporting the internal thread cylinder 4 and reducing friction, the inner end of the internal thread cylinder 4 is in threaded connection with an external thread cylinder 6, the circumferential surface of the internal thread cylinder 4 is fixedly connected with a pair of rotating hands 5, the rotating hands 5 rotate to drive the internal thread cylinder 4 to rotate, so that the external thread cylinder 6 can make linear motion, the surface of the rotating hands 5 is wrapped with a rubber pad, anti-skid lines are engraved on the rubber pad to increase hand feeling comfort level and increase friction, so that the rubber pad is not easy to fall off, the, the connecting blocks 7 play a role in fixing and connecting, a limiting groove 8 is formed in one end, close to each other, of each connecting block 7, a limiting connecting rod 9 is connected to the inner end of each limiting groove 8 in a rotating mode, each limiting connecting rod 9 can rotate in each limiting groove 8, a double-faced blackboard 10 is fixedly connected between the ends, close to each limiting connecting rod 9, four corner edges of each double-faced blackboard 10 are respectively and fixedly connected with a metal edge 15, the double-faced blackboard has a good protection effect and is added with appearance ornamental performance, a positioning block 11 is fixedly connected to the surface of each limiting connecting rod 9 and is located on the outer side of each limiting groove 8, a plurality of first positioning holes 12 are formed in the left end of each positioning block 11 and are evenly distributed, a second positioning hole 13 is formed in the left end of each connecting block 7, a positioning pin 14 is inserted between each second positioning hole 13 and each first positioning hole 12 which are located on the same horizontal plane, and each first positioning holes 12 can, the positioning pin 14 can be inserted into the second positioning hole 13 and the first positioning hole 12, thereby fixing the position of the positioning block 11, so that the double-sided blackboard 10 is not rotated any more, and finally fixing the position of the double-sided blackboard 10, the inner walls of the second positioning hole 13 and the first positioning hole 12 are both adhered with sponge pads through nylon pastes, the sponge pads increase friction, so that the insertion is more firm, the sponge pads can be conveniently replaced by the nylon pastes, the right end of the connecting block 7 on the right side is fixedly connected with the fixing seat 16, the upper end of the fixing seat 16 is fixedly connected with the fixing block 17 and the magnet block 18 from left to right in sequence, the upper end of the fixing block 17 is provided with a plurality of uniformly distributed chalk grooves 19 in a chiseling mode, chalks are inserted into the inner ends of the chalk grooves 19, so that chalks can be conveniently placed, the upper end of.

The working principle is as follows: when needs height-adjusting, rotate and change hand 5, change hand 5 and rotate and drive an internal thread section of thick bamboo 4 and rotate, can make external screw thread post 6 make linear motion, through rotating to the direction of difference, can carry out the oscilaltion, pull out a pair of locating pin 14, rotate two-sided blackboard 10, rotate when rotating to suitable angle, insert a pair of locating pin 14 in proper order, fix the position of locating piece 11, make it no longer rotate, thereby fix the position of two-sided blackboard 10, accomplish fixedly, can write, because two-sided blackboard 10 can all write, the writing area has been increased, the regulation of accessible angle simultaneously, fast switch over carries out the writing of writing to the another side, the utility model discloses be convenient for adjust, the area is great, has effectively improved the teaching quality.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. The utility model provides an easy blackboard of adjusting, includes blackboard steady seat (1), its characterized in that: the upper end of the blackboard stabilizing seat (1) is provided with a pair of bearing grooves (2), the inner end of each bearing groove (2) is connected with an internal thread cylinder (4) in a rotating mode through a bearing (3), the inner end of each internal thread cylinder (4) is connected with an external thread column (6), the circumferential surface of each internal thread cylinder (4) is fixedly connected with a pair of rotating hands (5), the upper end of each external thread column (6) is fixedly connected with a connecting block (7), one end, close to each other, of each connecting block (7) is provided with a limiting groove (8), the inner end of each limiting groove (8) is connected with a limiting connecting rod (9) in a rotating mode, one end, close to each limiting connecting rod (9), of each limiting connecting rod (9) is fixedly connected with a double-faced blackboard (10), the surface of each limiting connecting rod (9) is fixedly connected with a positioning block (11), the left end of the positioning block (11) is provided with a plurality of first positioning holes (12) which are uniformly distributed, the left end of the connecting block (7) is provided with a second positioning hole (13), and a positioning pin (14) is inserted between the second positioning hole (13) and the first positioning hole (12) which are positioned on the same horizontal plane.

2. An easily adjustable blackboard according to claim 1, characterised in that: one right-hand member fixedly connected with fixing base (16) of connecting block (7), fixedly connected with fixed block (17) and magnet piece (18) are in proper order from the left hand right hand in the upper end of fixing base (16), the chalk groove (19) that have a plurality of evenly distributed are opened and chiseled in the upper end of fixed block (17), the upper end magnetism of magnet piece (18) is connected with metal blackboard eraser (20).

3. An easily adjustable blackboard according to claim 1, characterised in that: the surface of the rotating hand (5) is wrapped with a rubber pad, and anti-skid lines are carved on the rubber pad.

4. An easily adjustable blackboard according to claim 1, characterised in that: the inner ring of the bearing (3) is in interference fit with the inner thread cylinder (4), and the outer ring of the bearing (3) is in interference fit with the bearing groove (2).

5. An easily adjustable blackboard according to claim 1, characterised in that: the inner walls of the second positioning hole (13) and the first positioning hole (12) are both adhered with sponge cushions through nylon.

6. An easily adjustable blackboard according to claim 1, characterised in that: the four corner edges of the double-sided blackboard (10) are fixedly connected with metal edge covers (15).