CN211390760U

CN211390760U - Blackboard eraser convenient to use

Info

Publication number: CN211390760U
Application number: CN201921133793.9U
Authority: CN
Inventors: 李昳霓
Original assignee: Taizhou Tianzhi Education Technology Co ltd
Current assignee: Taizhou Tianzhi Education Technology Co ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-09-01
Anticipated expiration: 2029-07-18

Abstract

The utility model discloses a blackboard eraser convenient to use, including blackboard eraser body and collection device, the positive fixed connection collection device of blackboard eraser body, blackboard eraser body top surface rotates and is connected with the rotation axis, the rotation axis is close to the one end fixed connection carousel of blackboard eraser body inner wall, the equal fixed connection support arm in both ends of carousel, support arm looks back end all runs through there is first bracing piece, the exterior wall cover of first bracing piece is equipped with the montant, the center department of montant runs through there is the second bracing piece, the equal fixed connection slipmat of montant opposite face, the opposite face laminating of slipmat has the piece of wiping. The utility model discloses in, hold earlier and change and rotate, change and make slipmat on the montant break away from with the exterior wall of wiping the piece when rotating mutually, pull out again and wipe the piece and can clear up wiping the piece, this mode can be so that wipe more thoroughly, clean of piece clearance, when assurance secondary that can be fine is cleaned for cleaner that the blackboard was cleaned, and then can improve mr's teaching quality.

Description

Blackboard eraser convenient to use

Technical Field

The utility model relates to a teaching aid technical field, in particular to blackboard eraser convenient to use

Background

At present, most schools still use a blackboard eraser to erase chalk characters written on a blackboard in classroom teaching; the blackboard is an important blackboard-writing tool, and is still a teaching tool for classroom teaching widely used in primary and secondary schools in China.

However, among the prior art, all be fixed between the piece and the blackboard eraser body of wiping of current blackboard eraser, when dust gathering is more on wiping the piece, can only clear up through patting the blackboard eraser body, this clearance mode can make the not thorough enough of piece clearance of wiping, and then can make the blackboard writing clean enough when wiping next time, and then can influence secondary blackboard writing, influence mr's teaching quality, current chalk all is put in the chalk box simultaneously, when needs carry out outdoor teaching, the chalk volume is less, easily lose, and then can influence the quality of teaching.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a blackboard eraser convenient to use.

In order to solve the technical problem, the utility model discloses a technical scheme's basic thinking is, a blackboard eraser convenient to use, including blackboard eraser body and collection device, the positive fixed connection collection device of blackboard eraser body, blackboard eraser body top surface rotates and is connected with the rotation axis, the rotation axis is close to the one end fixed connection carousel of blackboard eraser body inner wall, the equal fixed connection support arm in both ends of carousel, the support arm looks back end has all run through first bracing piece, the exterior wall cover of first bracing piece is equipped with the montant, and the center department of montant has run through the second bracing piece, the equal fixed connection slipmat of montant opposite face, the opposite face laminating of slipmat has the piece of wiping, the exterior wall of wiping the piece is sliding connection with the exterior wall of blackboard eraser body.

As a further description of the above technical solution:

one end of the rotating shaft, which is close to the outer surface wall of the blackboard eraser body, is fixedly connected with a rotating handle, and the rotating handle is used for rotating the rotating shaft.

As a further description of the above technical solution:

a plurality of holding grooves are formed in the top surface of the collecting device in an equidistant mode, and the holding grooves are cylindrical.

As a further description of the above technical solution:

the collecting device is characterized in that a telescopic plate is fixedly connected to one side of the top of the collecting device, a sliding block is fixedly connected to the front face and the back face of the other end of the telescopic plate, a supporting rod penetrates through the center of the sliding block, and the two ends of the supporting rod are welded to the inner wall of the collecting device.

As a further description of the above technical solution:

the top surface of the telescopic plate is fixedly connected with a telescopic rod at the center of one side close to the sliding block, the top of the telescopic rod is fixedly connected with a clamping plate, a reset spring is sleeved on the outer wall of the telescopic rod, and a limiting block is fixedly connected with the top surface of the clamping plate.

As a further description of the above technical solution:

one side of the top surface of the collecting device is fixedly connected with a stop dog corresponding to the clamping plate, and the bottom surface of the stop dog is attached to the top surface of the clamping plate.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1: the utility model discloses in, hold earlier and change and rotate, change and make slipmat on the montant break away from with the exterior wall of wiping the piece when rotating mutually, pull out again and wipe the piece and can clear up wiping the piece, this mode can be so that wipe more thoroughly, clean of piece clearance, when assurance secondary that can be fine is cleaned for cleaner that the blackboard was cleaned, and then can improve mr's teaching quality.

2: the utility model discloses in, make the top surface of cardboard and the bottom surface of baffle break away from mutually through the mode of earlier pressing and then pulling the stopper to open collection device's top with this, can hold the chalk in the groove to the collection device top and take, this mode makes the chalk carry more convenient, can not cause the loss, can not pollute other article equally.

Drawings

Fig. 1 is a top view structural diagram of a convenient blackboard eraser;

fig. 2 is a front view structural diagram of a convenient blackboard eraser;

fig. 3 is an enlarged view of a region a of a front view structure of the blackboard eraser convenient for use according to the present invention.

In the figure: 1. a blackboard eraser body; 2. a collection device; 3. a retractable plate; 4. a containing groove; 5. a stay bar; 6. a turntable; 7. a slider; 8. a limiting block; 9. a stopper; 10. a first support bar; 11. a support arm; 12. a vertical rod; 13. wiping blocks; 14. a non-slip mat; 15. turning a handle; 1501. a rotating shaft; 16. a second support bar; 17. clamping a plate; 18. a return spring; 19. a telescopic rod.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The utility model provides a blackboard eraser convenient to use, including blackboard eraser body 1 and collection device 2, the positive fixed connection collection device 2 of blackboard eraser body 1, blackboard eraser body 1 top surface rotates and is connected with rotation axis 1501, rotation axis 1501 is close to the one end fixed connection carousel 6 of blackboard eraser body 1 inner wall, the equal fixed connection support arm 11 in both ends of carousel 6, support arm 11 looks back end has all run through first bracing piece 10, the both ends of first bracing piece 10 all with the inner wall looks sliding connection of blackboard eraser body 1, the exterior wall cover of first bracing piece 10 is equipped with montant 12, the center department of montant 12 has run through second bracing piece 16, the both ends of second bracing piece 16 all with the inner wall of blackboard eraser body 1 weld mutually, the equal fixed connection slipmat 14 of montant 12 opposite face, the opposite face laminating of slipmat 14 has the piece 13 of wiping, the exterior wall of piece 13 and the exterior wall sliding connection of blackboard eraser body 1 mutually.

One end of the rotating shaft 1501 close to the outer surface wall of the blackboard eraser body 1 is fixedly connected with a rotating handle 15, the rotating handle 15 is used for rotating the rotating shaft 1501, more labor is saved when the rotating shaft 1501 can be killed and fallen, a plurality of containing grooves 4 are formed in the top surface of the collecting device 2 at equal intervals, the containing grooves 4 are cylindrical and used for containing chalk, so that the chalk is more conveniently carried, one side of the top of the collecting device 2 is fixedly connected with a telescopic plate 3, the front surface and the back surface of the other end of the telescopic plate 3 are fixedly connected with sliding blocks 7, supporting rods 5 penetrate through the centers of the sliding blocks 7, the outer surface wall of each supporting rod 5 is in sliding connection with the corresponding sliding block 7, two ends of each supporting rod 5 are welded with the inner wall of the collecting device 2, a telescopic rod 19 is fixedly connected with the center of one side of the top surface of the telescopic plate 3 close to the corresponding sliding block 7, a clamping plate 17 is fixedly connected with the top of the, the top of reset spring 18 and the bottom of cardboard 17 are welded mutually, the top surface fixed connection stopper 8 of cardboard 17, and collection device 2's top surface one side fixed connection and the corresponding dog 9 of cardboard 17, the bottom surface of dog 9 and the top surface of cardboard 17 laminate mutually.

The working principle is as follows: when blackboard writing is needed, the limiting block 8 is pressed downwards, the limiting block 8 drives the clamping plate 17 at the bottom of the limiting block 8 when moving, the clamping plate 17 drives the return spring 18 and the telescopic rod 19 at the bottom when moving, the limiting block 8 is pulled again until the top of the clamping plate 17 is separated from the bottom surface of the stop block 9, the limiting block 8 drives the clamping plate 17 at the bottom when moving, the return spring 18 and the telescopic rod 19 at the bottom are driven when moving, the telescopic plate 3 at the bottom is driven when moving, the sliding blocks 7 at the two ends of the telescopic plate 3 slide on the outer surface wall of the support rod 5 when moving, so that the top of the collecting device 2 is opened, and then chalk can be taken out from the containing groove 4 of the collecting device 2, the mode enables the chalk to be carried more conveniently, after the chalk is used, the chalk is placed in the containing groove 4, and the limiting block 8 is pulled again, until the top of the clamping plate 17 is attached to the bottom surface of the stop block 9, the blackboard eraser body 1 is used for erasing a book by using the erasing block 13, when dust on the erasing block 13 is accumulated too much, the erasing block 13 needs to be detached and cleaned, the rotating handle 15 is firstly held to rotate, the rotating shaft 1501 is driven to rotate when the rotating handle 15 rotates, the rotating shaft 1501 drives the rotating disc 6 to rotate when the rotating disc 6 rotates, the supporting arms 11 at two ends are driven to rotate when the rotating disc 6 rotates, the vertical rod 12 is driven to rotate by taking the second supporting rod 16 as the center of a circle when the supporting arms 11 rotate, the non-slip mat 14 is driven by the second supporting rod 16 to rotate until the outer surface wall of the non-slip mat 14 is separated from the outer surface wall of the erasing block 13, and the erasing block 13 is pulled outwards.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A blackboard eraser convenient to use, comprising an eraser body (1) and a collecting device (2), characterized in that: the positive fixed connection collection device (2) of blackboard eraser body (1), blackboard eraser body (1) top surface rotates and is connected with rotation axis (1501), rotation axis (1501) is close to one end fixed connection carousel (6) of blackboard eraser body (1) inner wall, the equal fixed connection support arm (11) in both ends of carousel (6), support arm (11) back of the body end mutually all runs through first bracing piece (10), the exterior wall cover of first bracing piece (10) is equipped with montant (12), and the center department of montant (12) runs through second bracing piece (16), montant (12) the equal fixed connection slipmat (14) of opposite face, the opposite face laminating of slipmat (14) has piece (13) of wiping, the exterior wall of wiping piece (13) and the exterior wall sliding connection of blackboard eraser body (1) mutually.

2. The easy-to-use blackboard eraser according to claim 1, wherein: one end of the rotating shaft (1501) close to the outer surface wall of the blackboard eraser body (1) is fixedly connected with a rotating handle (15).

3. The easy-to-use blackboard eraser according to claim 1, wherein: a plurality of holding grooves (4) are formed in the top surface of the collecting device (2) at equal intervals.

4. The easy-to-use blackboard eraser according to claim 1, wherein: collecting device (2) top one side fixed connection expansion plate (3), the front and the equal fixed connection slider (7) in the back of the expansion plate (3) other end, vaulting pole (5) have all been run through in the center department of slider (7).

5. The easy-to-use blackboard eraser according to claim 4, wherein: the telescopic plate is characterized in that a telescopic rod (19) is fixedly connected to the center of one side, close to the sliding block (7), of the top surface of the telescopic plate (3), a clamping plate (17) is fixedly connected to the top of the telescopic rod (19), a reset spring (18) is sleeved on the outer wall of the telescopic rod (19), and a limiting block (8) is fixedly connected to the top surface of the clamping plate (17).

6. A convenient blackboard eraser according to claim 1 or 5, characterised in that: one side of the top surface of the collecting device (2) is fixedly connected with a stop block (9) corresponding to the clamping plate (17).