CN209232221U - A kind of portable mathematical probabilities distribution demonstration teaching aid - Google Patents
A kind of portable mathematical probabilities distribution demonstration teaching aid Download PDFInfo
- Publication number
- CN209232221U CN209232221U CN201821987247.7U CN201821987247U CN209232221U CN 209232221 U CN209232221 U CN 209232221U CN 201821987247 U CN201821987247 U CN 201821987247U CN 209232221 U CN209232221 U CN 209232221U
- Authority
- CN
- China
- Prior art keywords
- telescopic mast
- teaching aid
- guide rod
- demonstration
- empty slot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Toys (AREA)
Abstract
The utility model discloses a kind of portable mathematical probabilities to be distributed demonstration teaching aid, comprising: the teaching aid board of horizontally long extension, along its length through being equipped with empty slot in the teaching aid board；Multiple demonstration mechanisms in empty slot, multiple demonstration mechanisms arrange along the length direction of the empty slot；It is disposed through multiple circular holes of empty slot top surface；The demonstration mechanism includes: the position-limit mechanism of telescopic mast, the first guide rod, the second guide rod, the disk for squeezing the telescopic mast and the telescopic location for fixing the telescopic mast；When the telescopic mast is when in a compressed state, disk is located in empty slot, and when the telescopic mast is in extended state, telescopic mast drives disk to pass through circular hole and extend to circular hole top；The telescopic mast of setting is compressed spring, conducive to the scalability of compressed spring, forms intuitive histogram demonstration, overall structure is greatlied simplify while reaching ocular demonstration instead of traditional complicated demonstration mechanism, to have good portability.
Description
Technical field
The utility model relates to mathematics teaching aid correlative technology fields, and in particular to a kind of portable mathematical probabilities distribution demonstration
Teaching aid.
Background technique
Probability, also known as probability, chance rate or probability, possibility are the basic conception of mathematical probabilities opinion, are one 0
Real number between to 1 is measurement a possibility that chance event occurs.Indicate an a possibility that event occurs size
Number, is called the probability of the event.It is the measurement for a possibility that chance event occurs, while being also the most basic concept of probability theory
One of.It has often been said that someone have percent how many assurance can by specifically taking an examination, something occur a possibility that be how many, this
All be the example of probability, in the teaching process of higher mathematics probability theory, the introduction of probability theory be learn the basis of probability well, but because
Probability theory is abstract, is demonstrated frequently with some simple teaching aids, but all do not have significant demonstrating effect.
In the prior art, the teaching aid of various demonstration probability histograms still suffers from the drawback that
The mode of teaching aid in the prior art, demonstration is varied, usually by mounting plate, histogram demonstration board and play configuration
Composition, but the teaching aid of histogram demonstration board is had in the prior art, volume is larger, and teacher is inconvenient to carry, and play configuration
It is complicated, it is often necessary to carry out cooperation demonstration (such as lantern ring, colored ribbon, cloth, magnet) with other articles, cause using convenience
Difference, thus it is proposed that a kind of portable mathematical probabilities distribution demonstration teaching aid is to solve the above problems.
Utility model content
In view of the above-mentioned problems of the prior art, the utility model provides a kind of portable mathematical probabilities distribution demonstration
Teaching aid, the telescopic mast of setting are compressed spring, conducive to the scalability of compressed spring, form intuitive histogram demonstration, instead of
The demonstration mechanism of traditional complexity greatlies simplify overall structure while reaching ocular demonstration, to have very
Good portability.
To achieve the goals above, a kind of portable mathematical probabilities that the utility model uses are distributed demonstration teaching aid, comprising:
The teaching aid board of horizontally long extension, along its length through being equipped with empty slot in the teaching aid board；
Multiple demonstration mechanisms in empty slot, multiple demonstration mechanisms arrange along the length direction of the empty slot；
It is disposed through multiple circular holes of empty slot top surface；
The demonstration mechanism includes: telescopic mast, the first guide rod, the second guide rod, the circle for squeezing the telescopic mast
The position-limit mechanism of disk and the telescopic location for fixing the telescopic mast；
When the telescopic mast is when in a compressed state, disk is located in empty slot, when the telescopic mast is in extended state,
Telescopic mast drives disk to pass through circular hole and extend to circular hole top.
As advanced optimizing for above scheme, the quantity of the demonstration mechanism and circular hole is consistent.
As advanced optimizing for above scheme, the lower end of first guide rod is fixedly connected with the bottom surface of empty slot, the
The lower end of two guide rods is inserted into the middle part of the first guide rod in perpendicular long the first jack extended, the upper end of second guide rod and circle
It is fixedly connected in the middle part of the lower end of disk；
The telescopic mast is sheathed on the outside of the first guide rod, and the upper and lower end face of telescopic mast respectively with the lower end of disk,
It is close to the top surface of empty slot.
As advanced optimizing for above scheme, the position-limit mechanism is located in the lower end of the second guide rod, the limit
Mechanism is two symmetrically arranged retention beads；
Two retention beads are respectively positioned in the channel for extending transversely through setting in the second guide rod lower end, two limit convexes
The one end being located remotely from each other is acted to be each passed through the pilot hole of the first guide rod side wall and extend to the outside of the first guide rod；
Two retention bead one end close to each other are respectively equipped with a rack gear, and two rack gears are close to each other one
Side passes through teeth and engages connection with the outside of transmission gear；
The transmission gear is located in the middle part in channel.
As advanced optimizing for above scheme, the upper end of the transmission gear is fixedly connected with shaft, the shaft
Upper end passes through the second jack of channel top surface, and protrudes into running through in slot in the middle part of disk.
As advanced optimizing for above scheme, the telescopic mast is compressed spring.
As advanced optimizing for above scheme, the side cross-sectional of the retention bead is circle.
As advanced optimizing for above scheme, the quantity of the pilot hole is multiple, and pilot hole is along the first guide rod
Length direction arrangement.
As advanced optimizing for above scheme, the upper and lower sides of the retention bead are respectively equipped with an extension sliding block, institute
It states and extends in sliding block interlocking extension sliding slot matched in channel.
As advanced optimizing for above scheme, the joint of the shaft and the second jack is equipped with bearing.
A kind of portable mathematical probabilities of the utility model are distributed demonstration teaching aid, have it is following the utility model has the advantages that
1. a kind of portable mathematical probabilities of the utility model are distributed demonstration teaching aid, the telescopic mast of setting is compressed spring,
Conducive to the scalability of compressed spring, intuitive histogram demonstration (as shown in Figure 2) is formed, instead of traditional complicated demonstration machine
Structure, structure is simple, while reaching ocular demonstration, greatlies simplify overall structure, to have portable well
Property.
2. a kind of portable mathematical probabilities of the utility model are distributed demonstration teaching aid, the disk of setting is always to flexible cylindricality
At extruding, so that the outside for being sheathed on the second guide rod that telescopic mast is firm, using reliable.
3. a kind of portable mathematical probabilities of the utility model are distributed demonstration teaching aid, the position-limit mechanism of setting, to telescopic mast
Position after flexible is fixed, and facilitates operation, easy to use, practical.
Referring to following explanation and attached drawing, the particular implementation of the utility model is disclosed in detail, specifies practical
Novel principle can be in a manner of adopted, it should be appreciated that the embodiments of the present invention in range not thus by
Limitation, in the range of the spirit and terms of appended claims, the embodiments of the present invention includes many changes, modifications
With it is equivalent.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is structural schematic diagram when the utility model is used；
Fig. 3 is first guide rod, the second guide rod and disk attachment structure schematic diagram of the utility model；
Fig. 4 is the telescopic mast structural schematic diagram of the utility model；
Fig. 5 is the position-limit mechanism schematic diagram of the utility model；
Fig. 6 is the rack gear and transmission gear connection structure top view of the utility model.
In figure: teaching aid board 1, empty slot 2, telescopic mast 3, the first guide rod 4, the second guide rod 5, disk 6, circular hole 7, limit convex
8, channel 9 is played, rack gear 10, transmission gear 11, shaft 12, runs through slot 13, extend sliding block 14.
Specific embodiment
To make the objectives, technical solutions and advantages of the present invention clearer, below by attached drawing and implementing
Example, the present invention will be further described in detail.However, it should be understood that specific embodiment described herein is only used to
Explain the utility model, the range being not intended to limit the utility model.
Figure of description 1-6 is please referred to, the utility model provides a kind of technical solution: a kind of portable mathematical probabilities distribution
Demonstration teaching aid, comprising: the teaching aid board 1 of horizontally long extension, along its length through being equipped with empty slot 2 in teaching aid board 1；Positioned at empty slot 2
Interior multiple demonstration mechanisms, multiple demonstration mechanisms arrange along the length direction of empty slot 2；It is disposed through the multiple of 2 top surface of empty slot
Circular hole 7；Demonstration mechanism includes: telescopic mast 3, the first guide rod 4, the second guide rod 5, the disk 6 for squeezing telescopic mast 3 and uses
In the position-limit mechanism of the telescopic location of fixed telescopic mast 3, when telescopic mast 3 is when in a compressed state, disk 6 is located in empty slot 2, when
When telescopic mast 3 is in extended state, telescopic mast 3 drives disk 6 to pass through circular hole 7 and to extending above circular hole 7, demonstrates mechanism and circle
The quantity in hole 7 is consistent；
Referring particularly to Fig. 4, the telescopic mast 3 of setting is compressed spring, conducive to the scalability of compressed spring, is formed intuitive
Histogram demonstration, instead of traditional complicated demonstration mechanism, structure is simple, while reaching ocular demonstration, largely
Overall structure is simplified, to have good portability；
The lower end of first guide rod 4 is fixedly connected with the bottom surface of empty slot 2, the first guiding of lower end insertion of the second guide rod 5
It erects in long the first jack extended, is fixedly connected in the middle part of the upper end of the second guide rod 5 and the lower end of disk 6, telescopic mast in the middle part of bar 4
3 are sheathed on the outside of the first guide rod 4, and the upper and lower end face of telescopic mast 3 is tight with the top surface of the lower end of disk 6, empty slot 2 respectively
Patch, the disk 6 of setting form telescopic mast 3 squeeze always, so that the outside for being sheathed on the second guide rod 5 that telescopic mast 3 is firm,
Using reliable；
Referring particularly to Fig. 4 and Fig. 5, position-limit mechanism is located in the lower end of the second guide rod 5, and position-limit mechanism is two and symmetrically sets
The retention bead 8 set, the side cross-sectional of retention bead 8 are circle, the position-limit mechanism of setting, to position of the telescopic mast 3 after flexible
It is fixed, facilitates operation, it is easy to use, it is practical；
The upper and lower sides of retention bead 8 are respectively equipped with an extension sliding block, and it is matched in channel 9 to extend the interlocking of sliding block 14
Extension sliding slot in, two retention beads 8 are respectively positioned in the channel 9 for extending transversely through setting in 5 lower end of the second guide rod, two limit
One end that position protrusion 8 is located remotely from each other is each passed through the pilot hole of 4 side wall of the first guide rod and extends to the outside of the first guide rod 4,
The quantity of pilot hole is multiple, and pilot hole is arranged along the length direction of the first guide rod 4, and two retention beads 8 are close to each other
One end be respectively equipped with a rack gear 10, two rack gears 10 pass through the outer of teeth and transmission gear 11 in side close to each other
Side engagement connection；
Transmission gear 11 is located in the middle part in channel 9, and the upper end of transmission gear 11 is fixedly connected with shaft 12, shaft 12
Upper end passes through the second jack of 9 top surface of channel, and protrudes into running through in slot 13 in the middle part of disk 6, the phase of shaft 12 and the second jack
It meets place and is equipped with bearing, shaft 12 is located at running through in slot 13 in the middle part of disk 6, and the position that shaft 12 is arranged will not generate demonstration
Any influence.
Working principle: when the utility model is used, first rotating backward shaft, shaft 12 passes through the rack gear of two engagements
10, drive two adjacent retention beads 8 to move towards, retention bead 8 is moved in channel 9, is released to the second guide rod 5
Fixed, at this point, pushing disk 6 upwards under the action of telescopic mast 3, arrival needs position；
Shaft 12 is rotated forward again, shaft 12 passes through the rack gear 10 of two engagements, drives two adjacent retention beads 8
It is moved away from, retention bead 8 is moved to 9 outside (as shown in Figure 4) of channel out of channel 9, and passes through 4 side wall of the first guide rod
Through slot 13, so that the position of the second guide rod 5 is fixed, the position of disk 6 is fixed, and telescopic mast 3 is compressed spring, is conducive to
The scalability of compressed spring forms intuitive histogram demonstration；
Squeezed since disk 6 is always formed telescopic mast 3 so that telescopic mast 3 it is firm be sheathed on the outer of the second guide rod 5
Side, also, retention bead 8 is in the process of moving, extends sliding block 14 and slides in matched extension sliding slot, mobility
It is good；
(as shown in Figure 1) when not in use, multiple demonstration mechanisms (6 demonstration mechanisms are given in Fig. 1) are respectively positioned on empty slot 2
It is interior, it is not take up excessive space, portability is strong.
The only preferred embodiment of the utility model, is not intended to limit the utility model, all in the utility model
Spirit and principle within made any modification, equivalent replacement or improvement etc., should be included in the protection model of the utility model
Within enclosing.
Claims (10)
1. a kind of portable mathematical probabilities are distributed demonstration teaching aid characterized by comprising
The teaching aid board (1) of horizontally long extension, the teaching aid board (1) are interior along its length through equipped with empty slot (2)；
Multiple demonstration mechanisms in empty slot (2), multiple demonstration mechanisms arrange along the length direction of the empty slot (2)；
It is disposed through multiple circular holes (7) of empty slot (2) top surface；
The demonstration mechanism include: telescopic mast (3), the first guide rod (4), the second guide rod (5), for squeezing the telescopic mast
(3) position-limit mechanism of disk (6) and the telescopic location for fixing the telescopic mast (3)；
When the telescopic mast (3) is when in a compressed state, disk (6) is located in empty slot (2), stretches when the telescopic mast (3) are in
When exhibition state, telescopic mast (3) drives disk (6) to pass through circular hole (7) and extend to circular hole (7) top.
2. a kind of portable mathematical probabilities according to claim 1 are distributed demonstration teaching aid, it is characterised in that: the demonstration machine
Structure and the quantity of circular hole (7) are consistent.
3. a kind of portable mathematical probabilities according to claim 1 are distributed demonstration teaching aid, it is characterised in that: described first leads
It is fixedly connected to the lower end of bar (4) with the bottom surface of empty slot (2), in the middle part of the lower end insertion the first guide rod (4) of the second guide rod (5)
In perpendicular long the first jack extended, it is fixedly connected in the middle part of the upper end of second guide rod (5) and the lower end of disk (6)；
The telescopic mast (3) is sheathed on the outside of the first guide rod (4), and the upper and lower end face of telescopic mast (3) respectively with disk (6)
Lower end, empty slot (2) top surface be close to.
4. a kind of portable mathematical probabilities according to claim 1 are distributed demonstration teaching aid, it is characterised in that: the position restrainer
Structure is located in the lower end of the second guide rod (5), and the position-limit mechanism is two symmetrically arranged retention beads (8)；
Two retention beads (8) are respectively positioned in the channel (9) for extending transversely through setting in the second guide rod (5) lower end, and two
One end that retention bead (8) is located remotely from each other is each passed through the pilot hole of the first guide rod (4) side wall and extends to the first guide rod (4)
Outside；
Two retention bead (8) one end close to each other are respectively equipped with a rack gear (10), and two rack gears (10) are mutual
Close side passes through teeth and engages connection with the outside of transmission gear (11)；
The transmission gear (11) is located in the middle part in channel (9).
5. a kind of portable mathematical probabilities according to claim 4 are distributed demonstration teaching aid, it is characterised in that: the driving cog
The upper end of wheel (11) is fixedly connected with shaft (12), and the upper end of the shaft (12) passes through second jack of channel (9) top surface, and
It protrudes into interior through slot (13) in the middle part of disk (6).
6. a kind of portable mathematical probabilities according to claim 1 are distributed demonstration teaching aid, it is characterised in that: the telescopic mast
It (3) is compressed spring.
7. a kind of portable mathematical probabilities according to claim 4 are distributed demonstration teaching aid, it is characterised in that: the limit convex
The side cross-sectional for playing (8) is circle.
8. a kind of portable mathematical probabilities according to claim 4 are distributed demonstration teaching aid, it is characterised in that: the limit convex
The upper and lower sides for playing (8) are respectively equipped with an extension sliding block, and extension sliding block (14) interlocking is matched in channel (9) to prolong
It stretches in sliding slot.
9. a kind of portable mathematical probabilities according to claim 4 are distributed demonstration teaching aid, it is characterised in that: the pilot hole
Quantity be it is multiple, and pilot hole along the first guide rod (4) length direction arrange.
10. a kind of portable mathematical probabilities according to claim 5 are distributed demonstration teaching aid, it is characterised in that: the shaft
(12) bearing is equipped with the joint of the second jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821987247.7U CN209232221U (en) | 2018-11-29 | 2018-11-29 | A kind of portable mathematical probabilities distribution demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821987247.7U CN209232221U (en) | 2018-11-29 | 2018-11-29 | A kind of portable mathematical probabilities distribution demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209232221U true CN209232221U (en) | 2019-08-09 |
Family
ID=67505296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821987247.7U Expired - Fee Related CN209232221U (en) | 2018-11-29 | 2018-11-29 | A kind of portable mathematical probabilities distribution demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209232221U (en) |
-
2018
- 2018-11-29 CN CN201821987247.7U patent/CN209232221U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203596138U (en) | Apparatus for comprehensive demonstration of mechanical drive | |
| CN209433579U (en) | A kind of information technology teaching displaying device | |
| CN209343598U (en) | A kind of multi-functional economical management teaching demonstration teaching aid | |
| CN209232221U (en) | A kind of portable mathematical probabilities distribution demonstration teaching aid | |
| CN207281656U (en) | A kind of multi-screen Computer display screen board moving structure | |
| CN211207544U (en) | Electronic information teaching display device | |
| CN109751387A (en) | A kind of automobile gear facilitating installation | |
| CN207921316U (en) | A kind of shift control mechanism of speed changer | |
| CN207008903U (en) | A kind of Chinese teaching magic board | |
| CN207765085U (en) | A kind of dustproof and waterproof LED display | |
| CN204332170U (en) | A kind of science of economic management plotting sheet with spacing scaleplate | |
| CN215000836U (en) | LED display screen with regulatory function | |
| CN215474120U (en) | Sliding blackboard | |
| CN215068962U (en) | Display screen control system protection box | |
| CN210988921U (en) | Building engineering cost manages and uses table based on BIM technique | |
| CN212938883U (en) | Electronic technology teaching demonstration device | |
| CN211150020U (en) | Quick installation formula L ED advertisement case that is shaded | |
| CN210865127U (en) | Multimedia electronic blackboard for education and teaching | |
| CN206961334U (en) | A kind of memorizing english wordses aided education plate | |
| CN220796125U (en) | Agricultural economy trend curve analog device | |
| CN221804482U (en) | Novel education is with intelligent curtain board | |
| CN208867159U (en) | A kind of polaroid lineation device | |
| CN214955548U (en) | A combination formula teaching aid for drawing of economic management specialty chart | |
| CN220762695U (en) | Educational machine discernment subassembly | |
| CN215868297U (en) | Think political affairs class teaching display device |
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: 20190809 Termination date: 20201129 |