一种微积分教学板
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUODING VOCATIONAL & TECH COLLEGE
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional calculus teaching boards rely on manual flipping, which limits their area, increases their weight, makes them difficult to operate and unstable, and affects teaching effectiveness.
The design employs a counterweight assembly, including a force-balancing spring and a support frame, to counteract the weight of the writing board and drawing board through elastic tension, making them easy to lift and stable. The support frame is equipped with a locking mechanism to ensure the stability and flexibility of the board.
It achieves lightweight operation and improved teaching visibility for large-size teaching boards, ensuring that students in the back row can clearly observe calculus content.
Smart Images
Figure CN224504994U_ABST
Abstract
Claims
1. A calculus teaching board comprising a support frame (1), and a writing board (2) and a drawing board (3) sliding up and down and mounted to the support frame (1), the drawing board (3) being engraved with calculus teaching patterns, characterized in that, The top of the support frame (1) is fixedly equipped with a counterweight assembly (10), which includes a force spring (12). The elastic output end of the force spring (12) is fixedly connected to the writing board (2) and the drawing board (3). The elastic tension of the force spring (12) counteracts all or part of the weight of the writing board (2) and the drawing board (3).
2. A calculus teaching board according to claim 1, wherein The writing board (2) and drawing board (3) are installed on the support frame (1) with a staggered front and back. The counterweight assembly (10) includes a spring frame (11), a force spring (12) and a connecting frame (13). The spring frame (11) is provided with several sets of spring shafts. Each set of spring shafts includes two spring shafts (20) arranged vertically. Each spring shaft (20) is rotatably mounted with a force spring (12). The force spring (12) is a constant force spiral spring. The elastic output ends of the two force springs (12) on the same set of spring shafts extend downward from both sides and are fixedly connected to the same connecting frame (13). The connecting frame (13) is then fixedly connected to the writing board (2) or the drawing board (3). The writing board (2) or the drawing board (3) is connected to the connecting frame (13) corresponding to at least one set of spring shafts.
3. A calculus teaching board according to claim 2, wherein The bottom of the spring frame (11) is provided with several guide shafts (15). The guide shafts (15) are lower than all the force springs (12). When the force spring (12) is at its largest diameter, its projection in the vertical direction is the spring projection. The guide shafts (15) are completely within the range of the spring projection. Two guide shafts (15) are provided in each spring projection. The vertical cut surface of the guide shaft (15) that is close to the edge of the spring projection coincides with the edge of the spring projection.
4. A calculus teaching board according to claim 2, wherein The support frame (1) includes a base (4), on which two columns (6) are vertically fixed. The columns (6) are provided with a first sliding groove (7) and a second sliding groove (8) that are parallel to each other. The writing board (2) and the drawing board (3) are slidably installed into the first sliding groove (7) and the second sliding groove (8) respectively. The two sides of the writing board (2) and the drawing board (3) are slidably engaged with the two columns (6) respectively. The columns (6) are mutually engaged with the first sliding groove (7) and the second sliding groove (8) respectively. Each side away from the other is provided with a snap-fit cavity (9). The top of the spring frame (11) is provided with a first snap-fit block (14) that matches the snap-fit cavity (9). The spring frame (11) is snap-fitted to the top of the column (6) through the first snap-fit block (14). The top of the two columns (6) is fixedly installed with the same top beam (16). The top beam (16) is provided with a second snap-fit block that matches the snap-fit cavity (9). The top beam (16) is snap-fitted to the top of the column (6) through the second snap-fit block.
5. A calculus teaching board according to claim 4, wherein Two columns (6) have access ports (17) on opposite sides for installing and maintaining the counterweight assembly (10). The access ports (17) are connected to a side cover (18) that covers the access ports (17) via a snap-fit cavity (9).
6. A calculus teaching board according to claim 2, wherein Both sides of the writing board (2) and the drawing board (3) are provided with side mounting grooves (19), and the connecting frame (13) is fixedly connected to the side mounting grooves (19), and the widths of the side mounting grooves (19) and the spring frame (11) are matched and fitted together; both the bottom of the writing board (2) and the drawing board (3) are provided with bottom mounting grooves, and a locking structure (21) for preventing the writing board (2) and the drawing board (3) from sliding up and down is installed in the bottom mounting grooves.
7. A calculus teaching board according to claim 6, wherein The locking structure (21) includes a support assembly (22) that is fixedly installed in the mounting slot and prevents the writing board (2) or drawing board (3) from sliding up and down through the elastic support frame (1), and a knob assembly (23) that controls the extension and retraction of the support assembly (22).
8. A calculus teaching board according to claim 7, wherein The knob assembly (23) includes an operating knob (24) and a transmission rod (25). The operating knob (24) is rotated and installed in the bottom mounting groove. Two swing columns (26) are symmetrically installed on one side of the operating knob (24), and a transmission rod (25) is installed on both swing columns (26) for rotation. The support assembly (22) includes a mounting base (28), a support block (29), and a rotating connector (30). The mounting base (28) is fixedly installed in the bottom mounting groove. A spring cavity (31) is provided on one side of the seat (28). The support block (29) is slidably installed in the spring cavity (31). A support spring (32) is provided between the support block (29) and the mounting seat (28). An elastic soft rubber is provided at one end of the support block (29) away from the mounting seat (28). The other end of the support block (29) passes through the mounting seat (28) and is fixedly installed with a rotating connector (30). The rotating connector (30) and the corresponding transmission rod (25) are rotatably connected.