Phyllotactic transformation model
By designing a model of rotatable rings and light-sensitive color-changing leaves, the problem that existing teaching aids cannot display the dynamic changes of leaf arrangement and the relationship with light is solved. The intuitive display of the relationship between leaf arrangement and light is achieved, which improves students' learning effects.
Patent Information
- Application Number
- CN202421361357.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-06-14
AI Technical Summary
Existing botanical teaching aids are difficult to intuitively demonstrate the dynamic transformation process of leaf arrangement and the relationship between leaf arrangement and light. They lack interactivity and affect students' understanding and memory.
A model consisting of a rotatable ring and photochromic leaves was designed. The leaf arrangement type was displayed by pasting different numbers of leaves on the ring, and the color change of the illuminated part of the leaf was displayed under ultraviolet light using photochromic paint. This was combined with a support structure that could simulate the inclined growth of plant branches.
It realizes the intuitive dynamic display of leaf arrangement and visualization of light relationship, improves students' learning interest and understanding effect, has a simple structure and is easy to use, and is suitable for a variety of teaching environments.
Smart Images
Figure CN223347441U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of demonstration models and relates to a model for displaying plant leaf arrangement changes. Background Art
[0002] In the teaching process of botany, phyllotaxy, as an important feature that describes the arrangement of leaves on the stem, is of vital importance for understanding and analyzing the growth habits and morphological structure of plants. However, traditional phyllotaxy teaching methods often rely on text descriptions and static pictures, lacking intuitiveness and interactivity, making it difficult for students to understand and remember phyllotaxy. Although there are some teaching aids that simulate plant growth, the existing teaching aids cannot intuitively display the dynamic changes in phyllotaxy. In addition, plant photosynthesis and its relationship with phyllotaxy are also important contents in botany teaching, but existing teaching aids often ignore this point. Utility Model Content
[0003] The utility model provides a leaf arrangement transformation model to solve the problems in existing botanical teaching aids that it is difficult to intuitively display the dynamic transformation process of leaf arrangement and cannot effectively display the relationship between leaf arrangement and light.
[0004] In order to solve the above problems, the technical solution adopted by the utility model is: it includes a base with a support rod, the support rod is provided with multiple rings, and the multiple rings can be rotatably stacked on the support rod, and the rings are provided with leaves, and the leaves are detachably pasted on the rings. By pasting different numbers of the leaves at relative positions of the multiple rings, different leaf arrangement types are displayed, and the surface of the leaves is coated with photosensitive color-changing paint, so that the part of the leaves illuminated by the ultraviolet light will change color, effectively showing the relationship between the leaf arrangement and the light, and by rotating the ring located below, the leaves below that are not illuminated by the ultraviolet light are displayed, verifying the influence of the growth pattern of the leaves on the reception of light.
[0005] In the above technical solution, a more specific technical solution may also be: the ring is an iron ring, the leaves are provided with magnets, and the leaves are adsorbed on the ring through the magnets.
[0006] Furthermore: the outer wall of the ring is provided with a nano-traceless double-sided adhesive tape, so that the leaves are more firmly adhered to the ring.
[0007] Furthermore: a rubber ring is provided on the inner wall of the ring to increase the friction between the ring and the support rod.
[0008] Furthermore: the support rod and the base are hinged via a universal joint, so that the support rod can simulate the angle of inclined growth of plant branches.
[0009] Furthermore: a limiting bolt is provided at the top end of the support rod to prevent the ring from falling off the support rod.
[0010] Due to the adoption of the above technical solution, the present invention has the following advantages over existing technologies: by affixing different numbers of leaves to the relative positions of multiple circular rings, a visual display and dynamic transformation of phyllotaxis are achieved, enhancing students' learning effectiveness and interest. The photochromic paint applied to the leaf surface changes color under ultraviolet light, visually demonstrating the illuminated portion of the leaf and helping students understand the relationship between phyllotaxis and light. The invention has a simple structure, is easy to manufacture and use, and is suitable for a variety of teaching environments and occasions. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural diagram of a specific embodiment of the present invention.
[0012] Figure 2 It is a structural diagram of the second specific embodiment of the present utility model.
[0013] Figure 3 yes Figure 1 and Figure 2 Enlarged cross-sectional view of area A.
[0014] In the figure: 1. Base; 2. Support rod; 3. Ring; 31. Nano-traceless double-sided tape; 32. Rubber ring; 4. Leaf; 41. Magnet; 5. Limit bolt; 6. Universal joint. DETAILED DESCRIPTION
[0015] The present invention will be further described below in conjunction with the accompanying drawings:
[0016] Example 1:
[0017] like Figure 1 and Figure 3The phyllotaxis transformation model shown includes a base 1 provided with a support rod 2, the support rod 2 is provided with a plurality of circular rings 3, and the plurality of circular rings 3 are rotatably stacked and sleeved on the support rod 2, and the circular rings 3 are provided with leaves 4. In this example, the leaves 4 are green and are detachably pasted on the circular rings 3. Different numbers of leaves 4 are pasted at relative positions of the plurality of circular rings 3 to display different phyllotaxis types. The surface of the leaves 4 is coated with photochromic paint so that the part of the leaves 4 illuminated by the ultraviolet light will change color, effectively showing the relationship between the phyllotaxis and the light. By rotating the circular ring 3 located below, the leaves 4 below that are not illuminated by the ultraviolet light are displayed, verifying the influence of the leaf growth mode on the reception of light. The circular ring 3 is an iron circular ring 3, and the leaves 4 are provided with magnets 41, which are used to adsorb the leaves 4 on the circular ring 3. The outer wall of the circular ring 3 is provided with nano-traceless double-sided tape 31, so that the leaves 4 are more firmly bonded to the circular ring 3. The inner wall of the circular ring 3 is provided with a rubber ring 32 to increase the friction between the circular ring 3 and the support rod 2.
[0018] When teaching the relationship between opposite leaf arrangement and light, put multiple rings 3 on the support rod 2, and then symmetrically stick two leaves 4 on each ring 3. Rotate the rings 3 to make the leaves 4 block each other. Place them under a UV light for a period of time, and then turn off the UV light. The leaves 4 on the upper side will turn from green to purple-black, while the leaves 4 blocked below will remain green. Students can intuitively understand the relationship between opposite leaf arrangement and light.
[0019] When teaching the relationship between alternate leaf arrangement and light, put multiple rings 3 on the support rod 2, and then stick a leaf 4 on the corresponding position of each ring 3. Rotate the ring 3 to make the leaves 4 block each other alternately. Place it under a UV light for a period of time, and then turn off the UV light. The leaves 4 on the top will change from green to purple-black, while some parts of the leaves 4 blocked below will remain green and some parts will turn purple-black. Students can intuitively understand the relationship between opposite leaf arrangement and light.
[0020] Example 2:
[0021] like Figure 2 and Figure 3The phyllotaxis transformation model shown in the figure comprises a base 1 provided with a support rod 2, the support rod 2 is provided with a plurality of rings 3, the plurality of rings 3 are rotatably stacked and sleeved on the support rod 2, the rings 3 are provided with leaves 4, in this example, the leaves 4 are green, and the leaves 4 are detachably pasted on the rings 3. By pasting different numbers of leaves 4 at relative positions of the plurality of rings 3, different phyllotaxis types are displayed. The surface of the leaves 4 is coated with a photochromic paint, so that the part of the leaves 4 illuminated by the ultraviolet light will change color, effectively showing the relationship between the phyllotaxis and the light. By rotating the ring 3 located below, the leaves below that are not illuminated by the ultraviolet light will change color. The leaf 4 is displayed to verify the influence of the leaf growth mode on the reception of light; the ring 3 is an iron ring 3, and the leaf 4 is provided with a magnet 41, which makes the leaf 4 adsorbed on the ring 3 by the magnet 41; the outer wall of the ring 3 is provided with a nano-traceless double-sided tape 31, so that the leaf 4 is more firmly adhered to the ring 3; the inner wall of the ring 3 is provided with a rubber ring 32 to increase the friction between the ring 3 and the support rod 2; in this example, the support rod 2 and the base 1 are hinged by a damping spherical universal joint 6, so that the support rod 2 can simulate the angle of the inclined growth of the plant branch; the top of the support rod 2 is provided with a limit bolt 5 to prevent the ring 3 from falling off the support rod 2.
Claims
1. A phyllotaxis transformation model, characterized by: The invention comprises a base provided with a support rod, wherein the support rod is provided with a plurality of circular rings, and the plurality of circular rings are rotatably stacked and sleeved on the support rod, the circular rings are provided with leaves, and the circular rings are iron rings, and the leaves are provided with magnets, and the leaves are adsorbed on the circular rings by the magnets, and the outer wall of the circular rings is provided with nano-traceless double-sided tape, so that the leaves are more firmly adhered to the circular rings, and the leaves are detachably attached to the circular rings, and the leaves are coated with photochromic paint, so that the parts of the leaves irradiated by the ultraviolet light will change color, effectively showing the relationship between the leaf sequence and the light, and by rotating the circular ring located below, the leaves below that are not irradiated by the ultraviolet light are displayed, thereby verifying the influence of the growth mode of the leaves on the reception of light.
2. The phyllotaxis transformation model according to claim 1, wherein: The inner wall of the ring is provided with a rubber ring.
3. The phyllotaxis transformation model according to claim 2, wherein: The support rod and the base are hinged via a damping spherical universal joint.
4. The phyllotaxis transformation model according to claim 3, wherein: The top end of the support rod is provided with a limiting bolt.