食品级涂鸦粉笔防断芯封装装置
By introducing a buffer structure of rubber limiting sleeve and reset spring post into the chalk packaging device, combined with scale lines and anti-slip serrations, the problems of chalk being easy to break and difficult to adjust are solved, achieving stable chalk writing and precise length control, and improving the maneuverability of children's doodling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN BAIYIOU CHALK SCI & TECH DEV
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing children's chalk packaging devices lack an elastic cushioning structure, making the chalk prone to breakage and difficult to adjust the chalk extension length and control the writing angle, thus affecting the graffiti effect.
It adopts a snap-fit structure between the shell and the cover, and has an internal rubber limit sleeve and a return spring post. It reduces impact through elastic deformation and buffering. The chalk length can be adjusted by scale lines, and the correct pen grip posture is guided by anti-slip serrations and finger positioning sleeves.
Significantly reduces the risk of chalk breakage, enables precise adjustment of chalk extension length and stable grip, and enhances the doodling experience.
Smart Images
Figure CN224510717U_ABST
Abstract
Claims
1. A food-grade chalk anti-breakage packaging device, comprising a housing (1) and a cover (2), wherein the housing (1) and the cover (2) are locked together by a snap fastener; characterized in that The surface of the cover (2) is provided with a sliding groove (21). The shell (1) and the cover (2) are closed to form a cylinder. The inner walls of the shell (1) and the cover (2) are both equipped with limit sleeves (3). The interior of the shell (1) is equipped with a positioning sleeve (4). One end of a reset spring column (5) is fixedly connected to the surface of the positioning sleeve (4). The other end of the reset spring column (5) is fixedly connected to a bottom plate (6). A protruding block (7) is fixedly installed on the surface of the bottom plate (6). One end of a fixing frame (8) is fixedly installed on the surface of the bottom plate (6). A sliding push block (9) is fixedly installed on the other end of the fixing frame (8). A friction protrusion (10) is provided on the surface of the sliding push block (9). The sliding push block (9) overlaps the surface of the sliding groove (21).
2. The food grade chalk anti-break core encapsulation device of claim 1, wherein, The bottom plate (6), the fixing frame (8) and the sliding push block (9) form an I-shape. The bottom plate (6) overlaps the inner wall of the slide groove (21). The bottom plate (6) is pressed against the inner wall of the slide groove (21) by the reverse thrust of the reset spring column (5). The sliding push block (9) slides on the surface of the slide groove (21).
3. The food grade chalk anti-break core encapsulation device of claim 1, wherein, The limiting sleeve (3) is provided in two sets. The limiting sleeve (3) of the inner wall of the shell (1) and the cover (2) are closed to form a circumference. The limiting sleeve (3) is made of rubber.
4. The food grade chalk anti-break core encapsulation device of claim 1, wherein, The positioning sleeve (4) is installed at the tail end of the housing (1), the limiting sleeve (3) is installed at the head of the housing (1), the positioning sleeve (4) is circumferential, and the positioning sleeve (4) is made of rubber.
5. The food grade chalk anti-break core encapsulation device of claim 1, wherein, The limiting sleeve (3) and the positioning sleeve (4) are respectively fixed to the head and tail of the chalk (11). The surface of the housing (1) is fixedly installed with a finger positioning sleeve (12) for passing through the finger. The finger positioning sleeve (12) is semi-circular. There are two sets of the finger positioning sleeve (12) installed on both sides of the housing (1).
6. The food-grade chalk anti-breakage encapsulation device as described in claim 5, characterized in that, The finger positioning sleeve (12) is made of soft food-grade PP material, and its inner wall is provided with anti-slip ripples.
7. The food grade chalk anti-break core encapsulation device of claim 1, wherein, The inner wall of the groove (21) of the cover (2) is provided with scale lines, which are marked along the length of the groove (21) to display the displacement of the sliding push block (9) to adjust the extension length of the chalk (11).
8. The food grade chalk anti-break core encapsulating device of claim 5, wherein, The inner wall of the positioning sleeve (4) is provided with anti-slip teeth. The anti-slip teeth form an interlocking structure with the tail surface of the chalk (11). The friction of the teeth prevents the tail of the chalk (11) from sliding, ensuring a stable fit between the positioning sleeve (4) and the chalk (11).