CN218876715U - Chalk holder - Google Patents
Chalk holder Download PDFInfo
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- CN218876715U CN218876715U CN202220821950.0U CN202220821950U CN218876715U CN 218876715 U CN218876715 U CN 218876715U CN 202220821950 U CN202220821950 U CN 202220821950U CN 218876715 U CN218876715 U CN 218876715U
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- chalk
- cylindrical shell
- casing
- semi
- fixed
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Abstract
The utility model belongs to the technical field of teaching aid, concretely relates to chalk clip, including half spherical shell's lower terminal surface is provided with fixed semi-cylindrical shell swing joint has movable semi-cylindrical shell on the fixed semi-cylindrical shell, fixed semi-cylindrical shell constitutes the chalk jointly with movable semi-cylindrical shell and holds the chamber half spherical shell's upper end threaded connection has the screw thread post, the lower extreme of screw thread post extends to the chalk and holds intracavity portion, the utility model discloses a set up putting into of activity semi-cylindrical shell convenience chalk, through making movable semi-cylindrical shell articulated with half spherical shell, can prevent that it from losing, facilitate the use, just the utility model discloses a screw thread post only with half spherical shell threaded connection, simple structure.
Description
Technical Field
The utility model belongs to the technical field of teaching aid, concretely relates to chalk clip.
Background
Chalk is an indispensable tool for teachers, and blackboard writing with chalk is a common scene for teachers or students. In actual life, a teacher uses the chalk, so that the chalk is easy to fall on hands, the body of the teacher is damaged, and the chalk is easy to break.
At present, there are many domestic patents related to chalk sleeves, such as CN201752981U, CN210113120U, CN202225598U, CN2806169Y, etc. However, spiral threads need to be designed on the whole inner wall of the pen holder or chalk needs to be inserted into the fixing rod on the base, and the patents are not easy to operate and manufacture and have high cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a chalk clip to above-mentioned problem.
In order to achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a chalk clamp, includes the hemisphere casing the lower terminal surface of hemisphere casing is provided with fixed semicylinder casing swing joint has movable semicylinder casing on the fixed semicylinder casing, fixed semicylinder casing constitutes the chalk jointly with movable semicylinder casing and holds the chamber the upper end threaded connection of hemisphere casing has the screw thread post, the lower extreme of screw thread post extends to the chalk and holds intracavity portion.
Further, the movable semi-cylindrical shell is hinged with the hemispherical shell.
Still further, the fixed semi-cylindrical shell and the movable semi-cylindrical shell are movably connected through a groove and a lug corresponding to the groove.
Further, the front parts of the fixed semi-cylindrical shell and the movable semi-cylindrical shell are respectively provided with a handheld part, the inner side surface of the handheld part is provided with a connecting rod, and the other end of the connecting rod penetrates through the fixed semi-cylindrical shell or the movable semi-cylindrical shell and is connected with a clamping sheet.
Furthermore, the clamping sheet is arranged obliquely, and the inclination angle of the clamping sheet is the same as the surface inclination of the chalk.
Furthermore, the inner sides of the fixed semi-cylindrical shell and the movable semi-cylindrical shell are both provided with silica gel layers.
Furthermore, a chalk eraser is fixedly arranged at the upper end of the threaded column, and small errors can be quickly erased by the chalk eraser without damaging surrounding fonts.
Further, the lower end of the threaded column is a smooth hemisphere.
Compared with the prior art the utility model has the advantages of it is following:
1. the utility model has the advantages that the movable semi-cylindrical shell is arranged to facilitate the placing of the chalk, the movable semi-cylindrical shell is hinged with the semi-spherical shell, the chalk can be prevented from being lost, the use is convenient, the screw thread column of the utility model is only in threaded connection with the semi-spherical shell, and the structure is simple;
2. the utility model is provided with the silica gel layer, the silica gel layer can automatically perform elastic denaturation according to the condition that the thicknesses of two ends of the chalk are different, so as to guide the chalk, and the silica gel layer is convenient to increase the friction force with the chalk and prevent the chalk from automatically falling out;
3. the utility model discloses a handheld portion compresses tightly the centre gripping thin slice to form the clamping-force to the chalk, prevent to be greater than the diameter of chalk because of the diameter of fixed semi-cylindrical shell and activity semi-cylindrical shell exit, thereby cause the tip centre gripping unstable, finally lead to the fracture of chalk.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a cross-sectional view of the thin sheet clamping part of the present invention;
FIG. 4 is a cross-sectional view of the thin sheet clamping part of the present invention;
in the figure, a hemispherical shell-1, a fixed semi-cylindrical shell-2, a movable semi-cylindrical shell-3, a threaded column-4, a groove-5, a bump-6, a handheld part-7, a connecting rod-8, a clamping sheet-9, a silica gel layer-10 and a chalk eraser-11.
Detailed Description
In order to further illustrate the technical solution of the present invention, the present invention is further explained by the following embodiments.
As shown in fig. 1 to 4, a chalk clip comprises a hemispherical shell 1, wherein a fixed semi-cylindrical shell 2 is arranged on the lower end face of the hemispherical shell 1, a movable semi-cylindrical shell 3 is connected to the fixed semi-cylindrical shell 2, the fixed semi-cylindrical shell 2 and the movable semi-cylindrical shell 3 are movably connected through a groove 5 and a convex block 6 corresponding to the groove 5, the movable semi-cylindrical shell 3 is hinged to the hemispherical shell 1, the fixed semi-cylindrical shell 2 and the movable semi-cylindrical shell 3 jointly form a chalk containing cavity, a threaded cylinder 4 is connected to the upper end of the hemispherical shell 1 through threads, the lower end of the threaded cylinder 4 is a smooth hemisphere, the lower end of the threaded cylinder 4 extends into the chalk containing cavity, a chalk eraser 11 is fixedly arranged at the upper end of the threaded cylinder 4, handheld portions 7 are arranged at the front portions of the fixed semi-cylindrical shell 2 and the movable semi-cylindrical shell 3, a connecting rod 8 is arranged on the inner side face of the handheld portion 7, the other end of the connecting rod 8 penetrates through the fixed semi-cylindrical shell 2 or the movable semi-cylindrical shell 3 to be connected with a clamping sheet 9, the clamping sheet 9 is inclined, the surface of the fixed semi-cylindrical shell 2 and the movable semi-cylindrical shell 3 is inclined at the same inclination angle of the inner side of the fixed semi-cylindrical shell 2, and the inner side of the fixed semi-cylindrical shell 3, and the inner side of the semi-cylindrical shell 3 are provided with the inner side 10.
The essential features and advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A chalk clip is characterized in that: including hemisphere casing (1) the lower terminal surface of hemisphere casing (1) is provided with fixed semicylinder casing (2) swing joint has activity semicylinder casing (3) on fixed semicylinder casing (2), fixed semicylinder casing (2) and activity semicylinder casing (3) constitute the chalk jointly and hold the chamber the upper end threaded connection of hemisphere casing (1) has screw thread post (4), the lower extreme of screw thread post (4) extends to the chalk and holds intracavity portion fixed semicylinder casing (2) and the inboard of activity semicylinder casing (3) all are provided with silica gel layer (10) the front portion of fixed semicylinder casing (2) and activity semicylinder casing (3) all is provided with handheld portion (7), the medial surface of handheld portion (7) is provided with connecting rod (8), the other end of connecting rod (8) passes fixed semicylinder casing (2) or activity semicylinder casing (3) and is connected with centre gripping thin slice (9).
2. A chalk clip according to claim 1, characterized in that: the movable semi-cylindrical shell (3) is hinged with the hemispherical shell (1).
3. A chalk clip according to claim 2, characterized in that: the fixed semi-cylindrical shell (2) is movably connected with the movable semi-cylindrical shell (3) through the groove (5) and the lug (6) corresponding to the groove (5).
4. A chalk clip according to claim 1, characterized in that: the clamping sheet (9) is obliquely arranged, and the inclination angle of the clamping sheet is the same as the surface inclination of the chalk.
5. A chalk clip according to claim 1, characterized in that: a chalk eraser (11) is fixedly arranged at the upper end of the threaded column (4).
6. A chalk clip according to claim 1, characterized in that: the lower end of the threaded column (4) is a smooth hemisphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220821950.0U CN218876715U (en) | 2022-04-11 | 2022-04-11 | Chalk holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220821950.0U CN218876715U (en) | 2022-04-11 | 2022-04-11 | Chalk holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218876715U true CN218876715U (en) | 2023-04-18 |
Family
ID=85950005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220821950.0U Active CN218876715U (en) | 2022-04-11 | 2022-04-11 | Chalk holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218876715U (en) |
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2022
- 2022-04-11 CN CN202220821950.0U patent/CN218876715U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |