CN210132908U

CN210132908U - Telescopic chalk sleeve for Chinese teaching

Info

Publication number: CN210132908U
Application number: CN201920506177.7U
Authority: CN
Inventors: 宋沙兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-03-10
Anticipated expiration: 2029-04-15

Abstract

The utility model discloses a scalable chalk cover of chinese teaching usefulness, including sleeve and upper cover, telescopic inside sliding connection has the slide bar, the upper and lower both ends of slide bar are provided with the slider, one side fixedly connected with second bracing piece of slide bar, it has articulated first bracing piece through rotatory round pin to have on the second bracing piece, reset spring has been cup jointed to the outside of rotatory round pin, just the other end of first bracing piece and second bracing piece is provided with the stopper, the spout has been seted up to telescopic table wall, telescopic one end joint has the chalk, the battery box has been seted up to the telescopic other end. The utility model relates to a rationally, convenient to use, the chalk that can effectual protection user is used to the chalk to remaining 0.8-1cm, reduces the wasting of resources, and this kind of chalk cover still is convenient for mr's teaching in addition, and the structure is various, and the function is practical, is fit for extensively promoting.

Description

Telescopic chalk sleeve for Chinese teaching

Technical Field

The utility model relates to a teaching articles for use technical field, in particular to scalable chalk cover of chinese teaching usefulness.

Background

The chalk is the instrument that uses widely among the daily life, generally be used for writing on the blackboard, the user is mostly the mr, the mr holds between the fingers the chalk with the hand for a long time, the chalk dust glues easily on hand, it is not only dirty, and the chalk dust returns the trouble hand and seriously corrodes, rhagades, influence mr's health when the chalk is used to the afterbody, often can be because short and small and not use well, thereby can abandon, cause the waste, and the chalk appears the rupture phenomenon easily in the use, it is very inconvenient to use, and the mr lecture often can meet the laser pen and guide, it is comparatively inconvenient to use.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a retractable chalk sleeve for Chinese teaching, which can effectively solve the problems of the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a scalable chalk cover of chinese teaching usefulness, includes sleeve and upper cover, telescopic inside sliding connection has the slide bar, the upper and lower both ends of slide bar are provided with the slider, one side fixedly connected with second bracing piece of slide bar, it has first bracing piece to articulate through rotatory round pin on the second bracing piece, reset spring has been cup jointed to the outside of rotatory round pin, just the other end of first bracing piece and second bracing piece is provided with the stopper, the spout has been seted up to telescopic table wall, telescopic one end joint has the chalk, the battery box has been seted up to the telescopic other end, a side surface scarf joint of battery box has infrared switch, the opposite side surface joint of battery box has the battery box apron, but the upper cover joint is in telescopic both ends, the light trap has been seted up at the middle part of upper cover.

Further, the inside scarf joint of battery box has the battery, the battery forms for a plurality of button cell stack, the one end middle part scarf joint of battery box has infrared laser emitter.

Further, the infrared laser transmitter is right opposite to a light hole formed in the middle of the cover.

Furthermore, a buffer layer is bonded on the inner wall of the sleeve, the buffer layer is made of sponge, and the thickness of the buffer layer is 2-3 mm.

Furthermore, one end of the sliding groove is provided with a first limiting groove, the other end of the sliding groove is provided with a second limiting groove, the size of the sliding groove is in clearance fit with the size of the sliding block, and the sliding block extends out of the sliding groove by 4-5 mm.

Further, the rotation angle of the first support rod relative to the second support rod is 60-100 degrees.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model relates to a rationally, high durability and convenient use, through adding a sleeve to the chalk, thereby play the effect of protection both hands, also protected the difficult rupture of chalk, its sleeve contains the slide bar that can freely stretch out and draw back, can effectively clip the chalk, and adjust the length of chalk, use to remaining 0.8-1cm until the chalk, and then reduced the waste of chalk, the sleeve bottom is provided with infrared lamp holder, can realize the effect of replacing the laser pen, the teacher's of being convenient for teaching more, it is visible this kind of utility model, the structure is various, and is functional strong, and is suitable for extensive popularization.

Drawings

Fig. 1 is a schematic view of the overall structure of the utility model in use.

Fig. 2 is a schematic structural view of the closed state of the present invention.

Fig. 3 is a schematic structural view of the slide rod of the present invention.

Fig. 4 is a schematic structural view of the sliding chute of the present invention.

In the figure: 1. chalk; 2. a sleeve; 3. a buffer layer; 4. a slider; 5. an infrared switch; 6. an infrared laser transmitter; 7. a light-transmitting hole; 8. covering; 9. a battery case cover plate; 10. A storage battery; 11. a slide bar; 12. a limiting block; 13. a first support bar; 14. a second support bar; 15. a return spring; 16. a rotation pin; 17. a first limit groove; 18. a second limit groove; 19. a chute; 20. a battery box.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-4, a telescopic chalk sleeve for Chinese teaching comprises a sleeve 2 and a sleeve cover 8, wherein a sliding rod 11 is slidably connected inside the sleeve 2, sliding blocks 4 are arranged at the upper end and the lower end of the sliding rod 11, a second supporting rod 14 is fixedly connected to one side of the sliding rod 11, a first supporting rod 13 is hinged to the second supporting rod 14 through a rotating pin 16, a return spring 15 is sleeved outside the rotating pin 16, a limiting block 12 is arranged at the other end of the first supporting rod 13 and the other end of the second supporting rod 14, a sliding groove 19 is formed in the surface wall of the sleeve 2, chalk 1 is clamped at one end of the sleeve 2, a storage battery box 20 is arranged at the other end of the sleeve 2, an infrared switch 5 is embedded in the surface of one side of the storage battery box 20, a battery box cover plate 9 is clamped at the surface of the other side of the storage battery box 20, and the sleeve cover 8 can be clamped at the two ends of, the middle part of the sleeve cover 8 is provided with a light hole 7.

The storage battery 10 is embedded in the storage battery box 20, the storage battery 10 is formed by stacking a plurality of button batteries, and the infrared laser emitter 6 is embedded in the middle of one end of the storage battery box 10, so that teaching by teachers is facilitated.

Wherein, the infrared laser emitter 6 is right opposite to the light hole 7 arranged in the middle of the sleeve cover 8.

The inner wall of the sleeve 2 is bonded with the buffer layer 3, the buffer layer 3 is made of sponge, the thickness of the buffer layer 3 is 2-3mm, and the chalk protection function is achieved.

One end of the sliding groove 19 is provided with a first limiting groove 17, the other end of the sliding groove 19 is provided with a second limiting groove 18, the size of the sliding groove 19 is in clearance fit with the size of the sliding block 4, and the sliding block 4 extends out of the sliding groove by 4-5mm and is used for fixing the chalk.

Wherein the rotation angle of the first support rod 13 relative to the second support rod 14 is 60-100 degrees.

It should be noted that, the utility model relates to a scalable chalk cover of chinese teaching usefulness, its theory of operation is, during the use, on 1 joint stopper 12 of chalk, first bracing piece 13 acted on slide bar 11, and slide bar 11 utilizes slider 4 to slide on spout 3, and its effect lies in fixed chalk, can reach the flexible effect of chalk, and infrared lamp 6 is equipped with to the bottom of sleeve 2, the teacher of being more convenient for imparts knowledge to students in class.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A telescopic chalk sleeve for Chinese teaching comprises a sleeve (2) and a sleeve cover (8), and is characterized in that; a sliding rod (11) is connected to the inside of the sleeve (2) in a sliding manner, sliding blocks (4) are arranged at the upper end and the lower end of the sliding rod (11), a second supporting rod (14) is fixedly connected to one side of the sliding rod (11), a first supporting rod (13) is hinged to the second supporting rod (14) through a rotating pin (16), a reset spring (15) is sleeved outside the rotating pin (16), a limiting block (12) is arranged at the other end of the first supporting rod (13) and the other end of the second supporting rod (14), a sliding groove (19) is formed in the surface wall of the sleeve (2), chalk (1) is clamped at one end of the sleeve (2), a storage battery box (20) is formed in the other end of the sleeve (2), an infrared switch (5) is embedded in one side surface of the storage battery box (20), and a battery box cover plate (9) is clamped on the other side surface of the storage battery box, the sleeve cover (8) can be clamped at two ends of the sleeve (2), and the middle part of the sleeve cover (8) is provided with a light hole (7).

2. The retractable chalk sleeve for Chinese teaching according to claim 1, wherein: the solar battery is characterized in that a storage battery (10) is embedded in the storage battery box (20), the storage battery (10) is formed by overlapping a plurality of button batteries, and an infrared laser transmitter (6) is embedded in the middle of one end of the storage battery box (20).

3. The retractable chalk sleeve for Chinese teaching according to claim 2, characterized in that: the infrared laser emitter (6) is right opposite to the light hole (7) formed in the middle of the sleeve cover (8).

4. The retractable chalk sleeve for Chinese teaching according to claim 1, wherein: the inner wall of the sleeve (2) is bonded with a buffer layer (3), the buffer layer (3) is made of sponge, and the thickness of the buffer layer (3) is 2-3 mm.

5. The retractable chalk sleeve for Chinese teaching according to claim 1, wherein: one end of the sliding groove (19) is provided with a first limiting groove (17), the other end of the sliding groove (19) is provided with a second limiting groove (18), the size of the sliding groove (19) is in clearance fit with the size of the sliding block (4), and the sliding block (4) extends out of the sliding groove by 4-5 mm.

6. A retractable chalk cover for teaching Chinese language according to claim 1 or 5, characterized in that: the rotation angle of the first support rod (13) relative to the second support rod (14) is 60-100 degrees.