CN211264762U - DNA double helix structure teaching model - Google Patents
DNA double helix structure teaching model Download PDFInfo
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- CN211264762U CN211264762U CN202020228725.7U CN202020228725U CN211264762U CN 211264762 U CN211264762 U CN 211264762U CN 202020228725 U CN202020228725 U CN 202020228725U CN 211264762 U CN211264762 U CN 211264762U
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Abstract
The utility model discloses a DNA double helix structure teaching mode, including supporting seat, second gear and support frame, the internally mounted of supporting seat has first gear, and the right-hand member of first connecting ball installs the second and connects the ball, the third is connected the ball to the inboard of first connecting ball is installed, first fixed ball is installed to the inboard of third connection ball, and the right side of first fixed ball installs the second fixed ball, the third fixed ball is installed to the inboard of first fixed ball, and the right side of third fixed ball is connected with the fourth fixed ball, first spacing ball is installed to the inboard of third fixed ball, and the right side of first spacing ball is connected with the spacing ball of second, the inside through installation of the spacing ball of second has soft iron silk rope. The DNA double helix structure teaching model not only can enable students to fully know the model through practice operations of the students, but also is convenient to fix and rotate the model.
Description
Technical Field
The utility model relates to a teaching model technical field specifically is a DNA double helix structure teaching mode.
Background
The DNA double helix structure teaching model is a model which is related to biology and used for simulating the DNA double helix structure in teaching, the teaching model is vivid in image and can display the structure of DNA, and students can visually see the DNA double helix structure.
At present, a commonly used DNA double-spiral structure teaching model cannot enable students to fully know the model through practice operations of the students, and the model is inconvenient to fix and rotate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a DNA double helix structure teaching model to solve the present DNA double helix structure teaching model commonly used that above-mentioned background art provided, can not make the student fully know the model through student's practice operation, and inconvenient fix the problem with the rotation to the model.
In order to achieve the above object, the utility model provides a following technical scheme: a DNA double-spiral structure teaching model comprises a supporting seat, a second gear and a supporting frame, wherein a first gear is arranged inside the supporting seat, a vertical rod is arranged at the middle position of the first gear in a penetrating mode, the second gear is arranged at the outer surface position of the first gear, the supporting frame is arranged at the top end position of the vertical rod, a connecting plate is arranged on the outer side of the supporting frame, a cross rod is fixedly connected to the inner surface of the connecting plate, a first connecting ball is arranged on the inner side of the cross rod, a second connecting ball is arranged at the right end of the first connecting ball, a third connecting ball is arranged on the inner side of the first connecting ball, a fourth connecting ball is connected to the right side of the third connecting ball, a first fixing ball is arranged on the inner side of the third connecting ball, a second fixing ball is arranged on the right side of the first fixing ball, a third fixing ball is arranged on the inner side of the first fixing ball, and a fourth fixing, first spacing ball is installed to the inboard of third fixed ball, and the right side of first spacing ball is connected with the spacing ball of second, the inside of the spacing ball of second runs through and installs soft wire rope.
Preferably, the motion track of the second gear is in the shape of the first gear, and a linkage structure is formed between the first gear and the cross bar.
Preferably, the sum of the lengths of the first connecting ball and the second connecting ball is greater than the sum of the lengths of the third connecting ball and the fourth connecting ball, and the lengths of the first connecting ball and the second connecting ball are the same.
Preferably, the first connecting ball, the third connecting ball, the first fixing ball, the third fixing ball and the first limiting ball are connected through a soft iron wire rope, and the first connecting ball and the second connecting ball are connected through threads.
Preferably, a rhombic structure is formed among the first fixed ball, the second fixed ball, the third fixed ball, the fourth fixed ball, the first limiting ball and the second limiting ball, and the third fixed ball and the fourth fixed ball are symmetrically arranged around the first limiting ball and the second limiting ball.
Preferably, the soft iron wire rope is connected with the cross rod in a winding manner, and a spiral structure is formed between the soft iron wire rope monomers.
Compared with the prior art, the beneficial effects of the utility model are that: the DNA double helix structure teaching model not only can enable students to fully know the model through practice operations of the students, but also is convenient for fixing and rotating the model;
1. because the connection modes of the first connecting ball and the second connecting ball, the third connecting ball and the fourth connecting ball, the first fixing ball and the second fixing ball, the third fixing ball and the fourth fixing ball, and the first limiting ball and the second limiting ball are in threaded connection, the fixing is convenient, two pairs of fixing balls are convenient to disassemble, the assembly of students is convenient, and the spiral structures formed by the connecting balls, the limiting balls and the fixing balls are similar to the principle of DNA, so that the students have sufficient cognition on the fixing balls, the teaching is convenient, and the practical operation capability of the students is improved;
2. the first connecting ball, the second connecting ball, the third connecting ball, the fourth connecting ball, the first fixing ball, the second fixing ball, the third fixing ball, the fourth fixing ball, the first limiting ball and the second limiting ball are connected together through the soft iron wire rope, and the model is fixed through the winding connection between the soft iron wire rope and the cross rod;
3. because the support frame is installed to the bottom of horizontal pole, the bottom welded mounting of support frame has the montant to the montant runs through to be installed in the inside of first gear, makes this model be convenient for rotatory in the teaching through the meshing between first gear and the second gear.
Drawings
FIG. 1 is a front sectional structure of the present invention;
FIG. 2 is a schematic view of the structure of the soft iron wire rope of the present invention in use;
FIG. 3 is a schematic view of the overlooking and cutting structure of the present invention;
fig. 4 is a schematic view of the connection structure of the first connecting ball and the second connecting ball of the present invention;
fig. 5 is a schematic side view of the present invention.
In the figure: 1. a supporting seat; 2. a first gear; 3. a vertical rod; 4. a second gear; 5. a support frame; 6. a connecting plate; 7. a cross bar; 8. a first connecting ball; 9. a second connecting ball; 10. a third connecting ball; 11. a fourth connecting ball; 12. a first fixed ball; 13. a second fixed ball; 14. a third fixed ball; 15. a fourth fixed ball; 16. a first limit ball; 17. a second limit ball; 18. soft iron wire rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a DNA double-spiral structure teaching model comprises a supporting seat 1, a first gear 2, a vertical rod 3, a second gear 4, a supporting frame 5, a connecting plate 6, a cross rod 7, a first connecting ball 8, a second connecting ball 9, a third connecting ball 10, a fourth connecting ball 11, a first fixed ball 12, a second fixed ball 13, a third fixed ball 14, a fourth fixed ball 15, a first limit ball 16, a second limit ball 17 and a soft iron wire rope 18, wherein the supporting seat 1 is internally provided with the first gear 2, the middle position of the first gear 2 is provided with the vertical rod 3 in a penetrating way, the motion trail of the second gear 4 is in the shape of the first gear 2, the cross rod 7 can fix the soft iron wire rope 18, the second gear 4 is arranged at the outer surface position of the first gear 2, the supporting frame 5 is arranged at the top end position of the vertical rod 3, and the connecting plate 6 is arranged at the outer side of the supporting frame 5, the length sum of the first connecting ball 8 and the second connecting ball 9 is larger than the length sum of the third connecting ball 10 and the fourth connecting ball 11, and the length of the first connecting ball 8 is the same as that of the second connecting ball 9, so that the first connecting ball 8, the second connecting ball 9, the third connecting ball 10 and the fourth connecting ball 11 form a spiral structure, the inner surface of the connecting plate 6 is fixedly connected with a cross rod 7, the first connecting ball 8 is arranged on the inner side of the cross rod 7, the second connecting ball 9 is arranged on the right end of the first connecting ball 8, the third connecting ball 10, the first fixing ball 12, the third fixing ball 14 and the first limiting ball 16 are connected through a soft iron wire rope 18, the connecting mode between the first connecting ball 8 and the second connecting ball 9 is threaded connection, the first connecting ball 8 and the second connecting ball 9 are conveniently fixed, the third connecting ball 10 is arranged on the inner side of the first connecting ball 8, and the right side of third connection ball 10 is connected with fourth connection ball 11, first fixed ball 12 is installed to the inboard of third connection ball 10, and the right side of first fixed ball 12 installs second fixed ball 13, third fixed ball 14 is installed to the inboard of first fixed ball 12, and the right side of third fixed ball 14 is connected with fourth fixed ball 15, first spacing ball 16 is installed to the inboard of third fixed ball 14, and the right side of first spacing ball 16 is connected with second spacing ball 17, the inside of second spacing ball 17 runs through and installs soft wire rope 18.
As in fig. 2, a diamond structure is formed among the first fixing ball 12, the second fixing ball 13, the third fixing ball 14, the fourth fixing ball 15, the first limiting ball 16 and the second limiting ball 17, and the third fixing ball 14 and the fourth fixing ball 15 are symmetrically arranged with respect to the first limiting ball 16 and the second limiting ball 17, so that the stability of the first fixing ball 12, the second fixing ball 13, the third fixing ball 14, the fourth fixing ball 15, the first limiting ball 16 and the second limiting ball 17 can be improved.
As shown in fig. 1, the soft iron wire rope 18 is connected with the cross bar 7 in a winding manner, and a spiral structure is formed between the single soft iron wire ropes 18, so that the soft iron wire rope 18 is fixed on the cross bar 7.
The working principle is as follows: when the DNA double helix structure teaching model is used, as shown in fig. 2, the right ends of the first connecting ball 8, the third connecting ball 10, the first fixing ball 12, the third fixing ball 14 and the first limiting ball 16 and the left ends of the fourth connecting ball 11, the second fixing ball 13, the fourth fixing ball 15 and the second limiting ball 17 are all provided with a rod-shaped structure, and the connecting manners of the first connecting ball 8 and the second connecting ball 9, the third connecting ball 10 and the fourth connecting ball 11, the first fixing ball 12 and the second fixing ball 13, the third fixing ball 14 and the fourth fixing ball 15 and the first limiting ball 16 and the second limiting ball 17 are all threaded connection, so that the first connecting ball 8 and the second connecting ball 9, the third connecting ball 10 and the fourth connecting ball 11, the first fixing ball 12 and the second fixing ball 13, the third fixing ball 14 and the fourth fixing ball 15 and the first limiting ball 16 and the second limiting ball 17 are fixed together in pairs, meanwhile, two pairs of the soft iron wire ropes are convenient to disassemble, and meanwhile, students can conveniently assemble the soft iron wire ropes, the first connecting balls 8, the second connecting balls 9, the third connecting balls 10, the fourth connecting balls 11, the first fixing balls 12, the second fixing balls 13, the third fixing balls 14, the fourth fixing balls 15, the first limiting balls 16 and the second limiting balls 17 are all of a hollow structure, the soft iron wire ropes 18 can conveniently penetrate through the inside of the hollow structure, so that the soft iron wire ropes 18 are of a spiral structure, after the assembling is finished, the soft iron wire ropes 18 are wound on the outer surface of the cross rod 7 in the figure 1, so that the model is fixed, because the supporting frame 5 is installed at the bottom of the cross rod 7, the vertical rod 3 is welded at the bottom of the supporting frame 5, the vertical rod 3 is installed in the first gear 2 in a penetrating manner, the supporting frame 5 is rotated by hand, the rotation of the supporting frame 5 enables the second gear 4 to do circular motion around the first, can not make support frame 5 rotated easily through the meshing between first gear 2 and the second gear 4, consequently this model can rotate it in the teaching, because the internally mounted of supporting seat 1 has the drawer, the back is accomplished in the teaching, pulls down the model from horizontal pole 7 to place it in the drawer, can avoid falling the ash on the model, this is exactly this DNA double helix structure teaching model's whole course of work.
Those not described in detail in this specification are within the skill of the art. The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a DNA double helix structure teaching mode, includes supporting seat (1), second gear (4) and support frame (5), its characterized in that: the supporting seat is characterized in that a first gear (2) is arranged inside the supporting seat (1), a vertical rod (3) is arranged at the middle position of the first gear (2) in a penetrating mode, a second gear (4) is arranged at the outer surface position of the first gear (2), the supporting frame (5) is arranged at the top end position of the vertical rod (3), a connecting plate (6) is arranged on the outer side of the supporting frame (5), a cross rod (7) is fixedly connected to the inner surface of the connecting plate (6), a first connecting ball (8) is arranged on the inner side of the cross rod (7), a second connecting ball (9) is arranged at the right end of the first connecting ball (8), a third connecting ball (10) is arranged on the inner side of the first connecting ball (8), a fourth connecting ball (11) is connected to the right side of the third connecting ball (10), a first fixing ball (12) is arranged on the inner side of the third connecting, and the right side of first fixed ball (12) installs second fixed ball (13), third fixed ball (14) are installed to the inboard of first fixed ball (12), and the right side of third fixed ball (14) is connected with fourth fixed ball (15), first spacing ball (16) are installed to the inboard of third fixed ball (14), and the right side of first spacing ball (16) is connected with second spacing ball (17), the inside of second spacing ball (17) runs through and installs soft wire rope (18).
2. The teaching model of DNA duplex structure of claim 1, wherein: the motion trail of the second gear (4) is in the shape of the first gear (2), and a linkage structure is formed between the first gear (2) and the cross rod (7).
3. The teaching model of DNA duplex structure of claim 1, wherein: the sum of the lengths of the first connecting ball (8) and the second connecting ball (9) is larger than the sum of the lengths of the third connecting ball (10) and the fourth connecting ball (11), and the lengths of the first connecting ball (8) and the second connecting ball (9) are the same.
4. The teaching model of DNA duplex structure of claim 1, wherein: the first connecting ball (8), the third connecting ball (10), the first fixing ball (12), the third fixing ball (14) and the first limiting ball (16) are connected through a soft iron wire rope (18), and the first connecting ball (8) is in threaded connection with the second connecting ball (9).
5. The teaching model of DNA duplex structure of claim 1, wherein: the structure is characterized in that a rhombic structure is formed among the first fixing ball (12), the second fixing ball (13), the third fixing ball (14), the fourth fixing ball (15), the first limiting ball (16) and the second limiting ball (17), and the third fixing ball (14) and the fourth fixing ball (15) are symmetrically arranged relative to the first limiting ball (16) and the second limiting ball (17).
6. The teaching model of DNA duplex structure of claim 1, wherein: the soft iron wire ropes (18) are connected with the cross rod (7) in a winding mode, and spiral structures are formed among the soft iron wire ropes (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020228725.7U CN211264762U (en) | 2020-02-29 | 2020-02-29 | DNA double helix structure teaching model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020228725.7U CN211264762U (en) | 2020-02-29 | 2020-02-29 | DNA double helix structure teaching model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211264762U true CN211264762U (en) | 2020-08-14 |
Family
ID=71960356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020228725.7U Expired - Fee Related CN211264762U (en) | 2020-02-29 | 2020-02-29 | DNA double helix structure teaching model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211264762U (en) |
-
2020
- 2020-02-29 CN CN202020228725.7U patent/CN211264762U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200814 Termination date: 20210228 |