CN215244052U

CN215244052U - English teaching marking tool

Info

Publication number: CN215244052U
Application number: CN202121044645.7U
Authority: CN
Inventors: 吕英兰
Original assignee: Qilu Medical University
Current assignee: Qilu Medical University
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-21
Anticipated expiration: 2031-05-17

Abstract

The utility model relates to the field of English teaching aids, in particular to an English teaching marking tool, which comprises a fixed block, a sleeve, a slide bar, a handle and a roller; four chalk mounting holes are formed in the fixed block at equal intervals; the sleeve is fixedly connected with the bottom end of the fixed block; the sliding rod is sleeved in the sleeve; the handle is fixedly arranged on the side wall of the sleeve; the bottom end of the sliding rod is rotatably provided with a roller; a threaded hole is formed in the side wall of the bottom end of the sleeve; a plurality of through holes are formed in the side wall of the sliding rod in a matching way with the threaded holes; a plurality of through holes are uniformly distributed along the axial direction of the slide rod. Compared with the prior art, the arrangement of the fixed block, the sleeve, the sliding rod and the roller wheel can simultaneously ensure that the line segments have equal space and the drawn lines are straight; and the method can ensure that after one line of four-line grids are drawn, another line of four-line grids is drawn in parallel again.

Description

English teaching marking tool

Technical Field

The utility model relates to an english teaching aid field specifically discloses an english teaching marking off apparatus.

Background

In english teaching, in order to standardize writing, drawing four-line grids on a blackboard is an indispensable operation. When drawing four-line grids, a long ruler is needed to ensure that drawn lines are straight, but the equal distance between line segments of the four-line grids is difficult to ensure, so that the teaching quality is influenced.

When the existing English marking device is used, due to the fact that the existing English marking device is heavy in weight, although the distance between line segments can be guaranteed, the straight line drawn is difficult to achieve.

SUMMERY OF THE UTILITY MODEL

Not enough to the above-mentioned of prior art, the utility model provides an english teaching marking tool to solve current english marking tool and can not guarantee simultaneously that each line segment interval equals and the straight problem of lines drawn.

In order to achieve the above purpose, the technical scheme of the utility model is that:

an English teaching marking tool comprises a fixed block, a sleeve, a sliding rod, a handle and a roller; four chalk mounting holes are formed in the fixed block at equal intervals; the sleeve is fixedly connected with the bottom end of the fixed block; the sliding rod is sleeved in the sleeve; the handle is fixedly arranged on the side wall of the sleeve; the bottom end of the sliding rod is rotatably provided with a roller; a threaded hole is formed in the side wall of the bottom end of the sleeve; a plurality of through holes are formed in the side wall of the sliding rod in a matching way with the threaded holes; a plurality of through holes are uniformly distributed along the axial direction of the slide rod. The bolt is arranged in the threaded hole and penetrates through the through hole to fix the sliding rod and the sleeve. The roller rotates to contact the lower frame of the blackboard or the chalk box, and the drawn four-line grid lines are ensured to be straight. The four chalk mounting holes arranged at equal intervals guarantee the equal interval of the line segments of the four-line grid. The distance between fixed block and the blackboard lower frame can be adjusted in the setting of a plurality of through-holes, conveniently draws four line check of a line once more, and guarantees the parallel between two lines of four line check.

Preferably, a boss is fixedly arranged on the inner wall of the sleeve; the cooperation boss is provided with the spout on the slide bar lateral wall, guarantees the gliding stability of slide bar in the sleeve, makes things convenient for the bolt to penetrate the through-hole by the screw hole.

Preferably, the axis of the chalk mounting hole is perpendicular to the central line of the fixing block; the cross section of the handle is arranged in a concave shape; four the plane at chalk mounting hole axis place is the contained angle setting with the plane at handle and telescopic axis place, and during the marking off, handheld handle places the sleeve vertically, and the upper end of gyro wheel contact blackboard lower frame has guaranteed this moment to set up the chalk in the chalk mounting hole and the blackboard is the contained angle setting, conveniently marks off.

Preferably, the device also comprises a sleeve, a spring, a right-angle mounting block and a rotating shaft; the sleeve is fixedly arranged on the side wall of the bottom end of the sliding rod; one end of the spring is fixedly arranged on the bottom surface of the inner side of the sleeve, and the other end of the spring is fixedly connected with one end of the right-angle mounting block; the other end of the right-angle mounting block is fixedly provided with a through hole, the rotating shaft is arranged in the through hole, the rotating shaft is pressed on the outer side of the lower frame of the blackboard through the tensile force of the spring, and the stability of the roller in rolling is ensured.

Preferably, the rotating shaft is sleeved with a rubber sleeve to increase friction.

Preferably, the rubber layer is arranged on the inner wall of the chalk mounting hole, so that friction is increased, and stability of chalk arrangement is guaranteed.

The utility model has the advantages that: through the arrangement of the fixed block, the sleeve, the sliding rod and the roller, the equal space of each line segment and the straight line drawn can be ensured at the same time; and the method can ensure that after one line of four-line grids are drawn, another line of four-line grids is drawn in parallel again.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of an embodiment of the present invention;

description of reference numerals:

the chalk comprises the following components, by weight, 1-a fixed block, 2-a sleeve, 3-a sliding rod, 4-a handle, 5-a roller, 6-a chalk mounting hole, 7-a threaded hole, 8-a through hole, 9-a sleeve, 10-a spring, 11-a right-angle mounting block, 12-a rotating shaft and 13-a rubber sleeve.

Detailed Description

The present invention will be further described with reference to the following examples.

Example 1

As shown in fig. 1 and 2, the English teaching marking tool comprises a fixed block 1, a sleeve 2, a slide bar 3, a handle 4 and a roller 5; four chalk mounting holes 6 are arranged on the fixed block 1 at equal intervals; the sleeve 2 is fixedly connected with the bottom end of the fixed block 1; the sliding rod 3 is sleeved in the sleeve 2; the handle 4 is fixedly arranged on the side wall of the sleeve 2; the bottom end of the slide bar 3 is rotatably provided with a roller 5; a threaded hole 7 is formed in the side wall of the bottom end of the sleeve 2; two through holes 8 are arranged on the side wall of the sliding rod 3 in a matching way with the threaded holes 7; two through holes 8 are evenly distributed along the axial direction of the slide rod 3. The sliding rod 3 and the sleeve 2 are fixed by bolts arranged in the threaded holes 7 through the through holes 8. The roller 5 rotates to contact the lower frame of the blackboard or the chalk box, so that the drawn four-line grid lines are straight. The four chalk mounting holes 6 arranged at equal intervals guarantee the equal interval of the line segments of the four-line grid. The distance between the fixed block 1 and the lower frame of the blackboard can be adjusted by the arrangement of the two through holes 8, a line of four-line grids can be conveniently drawn again, and the parallelism between the two lines of four-line grids is ensured.

In the arrangement, a boss is fixedly arranged on the inner wall of the sleeve 2; the side wall of the slide rod 3 is provided with a sliding groove matched with the boss, so that the sliding stability of the slide rod 3 in the sleeve 2 is ensured, and a bolt is conveniently penetrated into the through hole 8 through the threaded hole 7. The axis of the chalk mounting hole 6 is vertical to the central line of the fixing block 1; the section of the handle 4 is arranged in a concave shape; the planes of the axes of the four chalk mounting holes 6 and the planes of the axes of the handle 4 and the sleeve 2 form included angles. The rubber layer is arranged on the inner wall of the chalk mounting hole 6, friction is increased, and stability of chalk setting is guaranteed. During scribing, the handle 4 is held by a hand, the sleeve 2 is vertically placed, the roller 5 contacts the upper end of the lower frame of the blackboard, and the chalk arranged in the chalk mounting hole 6 is arranged at an included angle with the blackboard, so that the scribing is convenient.

In order to ensure the stability of the rolling wheel during rolling, the English teaching marking tool also comprises a sleeve 9, a spring 10, a right-angle mounting block 11 and a rotating shaft 12; the sleeve 9 is fixedly arranged on the side wall of the bottom end of the sliding rod 3; one end of a spring 10 is fixedly arranged on the bottom surface of the inner side of the sleeve 9, and the other end of the spring is fixedly connected with one end of a right-angle mounting block 11; the through hole is fixedly arranged at the other end of the right-angle mounting block 11, the rotating shaft 12 is arranged in the through hole through the split pin, the axis of the rotating shaft 12 is arranged in the plane where the axes of the handle 4 and the sleeve 2 are located, the arrangement that the included angle is formed between chalk in the chalk mounting hole 6 and the blackboard is guaranteed, and the outer side of the lower frame of the blackboard is guaranteed to be compressed by the rotating shaft 12. The rotating shaft 12 is pressed on the outer side of the lower frame of the blackboard by the tension of the spring 10, so that the stability of the roller 5 in rolling is ensured. The rubber sleeve 13 is sleeved outside the rotating shaft 12 to increase friction.

Claims

1. The English teaching marking tool is characterized by comprising a fixed block (1), a sleeve (2), a sliding rod (3), a handle (4) and a roller (5); four chalk mounting holes (6) are formed in the fixed block (1) at equal intervals; the sleeve (2) is fixedly connected with the bottom end of the fixing block (1); the sliding rod (3) is sleeved in the sleeve (2); the handle (4) is fixedly arranged on the side wall of the sleeve (2); the bottom end of the sliding rod (3) is rotatably provided with a roller (5); a threaded hole (7) is formed in the side wall of the bottom end of the sleeve (2); a plurality of through holes (8) are arranged on the side wall of the sliding rod (3) in a matching way with the threaded holes (7); a plurality of through holes (8) are axially and uniformly distributed along the sliding rod (3).

2. The English teaching marking tool according to claim 1, wherein a boss is fixedly arranged on the inner wall of the sleeve (2); the side wall of the sliding rod (3) is provided with a sliding groove in a matching manner with the boss.

3. The English teaching marking tool according to claim 1, wherein the axis of the chalk mounting hole (6) is perpendicular to the center line of the fixing block (1); the cross section of the handle (4) is arranged in a concave shape; the plane where the axes of the four chalk mounting holes (6) are located and the plane where the axes of the handle (4) and the sleeve (2) are located form included angles.

4. The English teaching marking tool according to claim 3, further comprising a sleeve (9), a spring (10), a right-angle mounting block (11) and a rotating shaft (12); the sleeve (9) is fixedly arranged on the side wall of the bottom end of the sliding rod (3); one end of the spring (10) is fixedly arranged on the bottom surface of the inner side of the sleeve (9), and the other end of the spring is fixedly connected with one end of the right-angle mounting block (11); the other end of the right-angle mounting block (11) is fixedly provided with a through hole, and the rotating shaft (12) is arranged in the through hole.

5. English teaching marking tool according to claim 4, characterized in that the rotating shaft (12) is externally sleeved with a rubber sleeve (13).

6. The English teaching marking tool according to claim 1, wherein a rubber layer is arranged on the inner wall of the chalk mounting hole (6).