CN207955116U - A kind of compasses for teaching - Google Patents
A kind of compasses for teaching Download PDFInfo
- Publication number
- CN207955116U CN207955116U CN201820757592.5U CN201820757592U CN207955116U CN 207955116 U CN207955116 U CN 207955116U CN 201820757592 U CN201820757592 U CN 201820757592U CN 207955116 U CN207955116 U CN 207955116U
- Authority
- CN
- China
- Prior art keywords
- slide bar
- locking member
- adjustment seat
- angular adjustment
- support base
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a kind of compasses for teaching, including fixing leg and movable supporting leg, and the fixing leg and the top of the movable supporting leg are hinged, and the movable supporting leg bottom is provided with fixing sleeve, it is provided with the first locking member on the fixing sleeve, chalk can be held out against；The fixing leg bottom is provided with angular adjustment seat, and the angular adjustment seat is mounted on by the second locking member in the fixing leg；Slide bar is installed, and the slide bar is vertically arranged inside the angular adjustment seat, and is slidably connected with the angular adjustment seat, support base is provided with below the angular adjustment seat.Advantageous effect is：The fixed point of the fixing leg can be effectively prevent to slide, while also can avoid damage blackboard；The fixed point of the fixing leg is also ensured always perpendicular to blackboard, to improve the pretightening force of the sucker when fixing leg is fixed.
Description
Technical field
The utility model is related to teaching equipment fields, and in particular to a kind of compasses for teaching.
Background technology
Compasses are the tools for drawing circle or string, are usually used in construction with ruler and compasses in mathematics and drawing.
Applicants have discovered that at least there is following technical problem in the prior art：Divide on two supporting legs of existing compasses for teaching
Fixed pin and chalk are not installed, drawing bowlder, fixed pin side needs teacher to be pinned with hand, it is fixed, to side
Just the chalk on another supporting leg rotates about, and completes the drafting of circle, when the power being applied in fixed pin is excessive, fixed pin meeting
Blackboard is pricked bad, when the power of application is too small, fixed pin side can slide again, when especially drawing great circle, fixed pin one
End is easy to that position movement occurs, irregular so as to cause the circle drawn.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and provides a kind of compasses for teaching, existing to solve
In technology compasses when in use, blackboard can be pricked it is bad, and draw great circle when, fixed pin side be easy to happen position movement etc. skills
Art problem.Preferred technical solution has in many technical solutions provided by the utility model：It will be described solid by the sucker
Determine stabilizer blade to be fixed on blackboard, to avoid damage blackboard, but also the fixed point of the sucker can be increased when drawing great circle
Diameter, to avoid the fixing leg that the technique effects such as sliding, elaboration as detailed below occurs.
To achieve the above object, the utility model provides following technical scheme：
A kind of compasses for teaching provided by the utility model, including fixing leg and movable supporting leg, and the fixing leg
It is hinged with the top of the movable supporting leg, the movable supporting leg bottom is provided with fixing sleeve, and is provided on the fixing sleeve
One locking member can hold out against chalk；
The fixing leg bottom is provided with angular adjustment seat, and the angular adjustment seat is mounted on institute by the second locking member
It states in fixing leg；Slide bar is installed, and the slide bar is vertically arranged inside the angular adjustment seat, and with the angular adjustment
Seat is slidably connected, and support base is provided with below the angular adjustment seat, and the support base connects with angular adjustment seat rotation
It connects, the slide bar is provided with third locking member downward through the support base on the lateral surface of the support base, can be to described
Slide bar is locked；
Several oscillating rods are provided on the outside of the support base, and the oscillating rod is circularly and evenly distributed in the branch
It supports on seat, the oscillating rod upper end is mounted on by axis pin on the support base, and the oscillating rod lower end is provided with sucker, described
It is additionally provided with slip ring on slide bar, can up and down be slid along the slide bar, and the slip ring is located at below the support base, the cunning
The lateral surface of ring is provided with the 4th locking member, the slip ring can be fixed on the slide bar, the lateral surface of the slip ring is also
Several acclivitous supporting rods are provided with, and the quantity of the supporting rod and position are corresponding with the oscillating rod, institute
The lower end for stating supporting rod is mounted on by axis pin on the slip ring, and upper end is mounted on by axis pin on the oscillating rod.
Using a kind of above-mentioned compasses for teaching, when in use, chalk is inserted into the fixing sleeve, and lock using described first
Tight part holds out against chalk, then according to drawn diameter of a circle, the fixed range of the sucker is adjusted, by the slide bar, institute
It is umbrella-shaped structure to state slip ring, the supporting rod and the oscillating rod and formed, thus can according to the diameter of a circle drawn,
Adjusting the bottom opening size of umbrella-shaped structure can be such that the oscillating rod supports outward when drawing great circle by the slip ring to moving up
It opens, to increase the fixed range of the sucker, then the 4th locking member is locked again, the slip ring is fixed,
Also the slide bar can be pulled up, to make the oscillating rod strut, then again in the case where the 4th locking member is locked
The third locking member is locked, the slide bar is locked, draws small bowlder, slip ring or described described in reverse operating
Slide bar, you can make the oscillating rod inwardly fold, to reduce the fixed range of the sucker, when drawing, also need adjustment institute
The angle for stating angular adjustment seat and the fixing leg makes the slide bar perpendicular to blackboard surface, the fixing leg and the work
The connection vertex of dynamic stabilizer blade is located among chalk and the slide bar, to facilitate round drafting.
Preferably, first locking member, second locking member, the third locking member, the 4th locking member,
5th locking member is locking knob.
Preferably, the support base is mounted on by bearing on the angular adjustment seat.
Preferably, the sucker is connect with the oscillating rod by axis pin.
Preferably, round boss is both provided at the top and bottom of the slide bar, and the diameter of round boss is more than institute
State the outer diameter of slide bar.
Advantageous effect is：1, the utility model can effectively prevent the fixed point of the fixing leg to slide, together
When also can avoid damage blackboard；
2, also ensure that the fixed point of the fixing leg always perpendicular to blackboard, is fixed to improve the fixing leg
The pretightening force of Shi Suoshu suckers.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the front view of the utility model；
Fig. 2 is the sucker installation site vertical view of the utility model.
The reference numerals are as follows：
1, fixing leg；2, movable supporting leg；3, fixing sleeve；301, the first locking member；4, angular adjustment seat；401, the second lock
Tight part；402, support base；403, third locking member；5, slide bar；6, oscillating rod；601, sucker；7, slip ring；701, the 4th locking
Part；702, supporting rod.
Specific implementation mode
It, below will be to the technology of the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Shown in Fig. 1-Fig. 2, the utility model provides a kind of compasses for teaching, including fixing leg 1 and activity are propped up
Foot 2, and fixing leg 1 and the top of movable supporting leg 2 are hinged, 2 bottom of movable supporting leg is provided with fixing sleeve 3, is set on fixing sleeve 3
It is equipped with the first locking member 301, chalk can be held out against；
1 bottom of fixing leg is provided with angular adjustment seat 4, and angular adjustment seat 4 is mounted on by the second locking member 401 and is fixed
On stabilizer blade 1, when angular adjustment seat 4 needs to adjust the angle, the second locking member 401 need to be unclamped, after having adjusted angle, then by the
Two locking members 401 are locked, and angle adjusting seat is fixed；Slide bar 5 is installed, and slide bar 5 is set vertically inside angular adjustment seat 4
It sets, is slidably connected with angular adjustment seat 4, so set, convenient for adjusting the distance that slip ring 7 arrives support base 402 by slide bar 5, from
And the fixation point height of fixed supporting leg 1 is adjusted, 4 lower section of angular adjustment seat is provided with support base 402, and support base 402
It is rotatablely connected with angular adjustment seat 4, slide bar 5 is provided with third lock downward through support base 402 on the lateral surface of support base 402
Tight part 403, can lock slide bar 5；
The outside of support base 402 is provided with several oscillating rods 6, and oscillating rod 6 is circularly and evenly distributed in support base 402
On, 6 upper end of oscillating rod is mounted on by axis pin on support base 402, and 6 lower end of oscillating rod is provided with sucker 601, is also set on slide bar 5
It is equipped with slip ring 7, can be slid along about 5 slide bar, and slip ring 7 is located at the lower section of support base 402, the lateral surface of slip ring 7 is provided with the
Slip ring 7 can be fixed on slide bar 5 by four locking members 701, and the lateral surface of slip ring 7 is additionally provided with several acclivitous branch
Strut 702, and the quantity of supporting rod 702 and position are corresponding with oscillating rod 6, the lower end of supporting rod 702 is installed by axis pin
On slip ring 7, upper end is mounted on by axis pin on oscillating rod 6.
Preferably, the first locking member 301, the second locking member 401, third locking member 403, the 4th locking member the 701, the 5th
Locking member is locking knob, so set, being easy to implement the quick locking of locking member.
Support base 402 is mounted on by bearing on angular adjustment seat 4, so set, convenient for drawing bowlder, angular adjustment
Seat 4 can be rotated with fixing leg 1, and support base 402 remains stationary as.
Sucker 601 is connect with oscillating rod 6 by axis pin, so set, facilitating the angle of adjustment sucker 601, can make suction
Disk 601 is vertically adsorbed on blackboard.
The top and bottom of slide bar 5 are both provided with round boss, and the diameter of round boss is more than the outer diameter of slide bar 5, such as
This setting, limits slide bar 5 convenient for passing through round boss, prevents the abjection out of angular adjustment seat 4 and slip ring 7 of slide bar 5.
Using the above structure, when in use, chalk is inserted into fixing sleeve 3, and utilizes the first locking member 301 by chalk top
Tightly, then according to drawn diameter of a circle, adjust the fixed range of sucker 601, due to slide bar 5, slip ring 7, supporting rod 702 and
It is umbrella-shaped structure that oscillating rod 6, which is formed, therefore can adjust the bottom opening ruler of umbrella-shaped structure according to the diameter of a circle drawn
It is very little, when drawing great circle, oscillating rod 6 can be made to strut outward by slip ring 7 to moving up, to increase the fixed range of sucker 601,
Then the 4th locking member 701 is locked again, slip ring 7 is fixed, also can be in the case where the 4th locking member 701 be locked, it will
Slide bar 5 pulls up, and to make oscillating rod 6 strut, then again locks third locking member 403, is locked to slide bar 5,
Draw small bowlder, reverse operating slip ring 7 or slide bar 5, you can so that oscillating rod 6 is inwardly folded, to reduce the fixation model of sucker 601
It encloses, when drawing, also needs the angle for adjusting the angle adjustment seat 4 and fixing leg 1, make slide bar 5 perpendicular to blackboard surface, fixing leg
1 is located at the connection vertex of movable supporting leg 2 among chalk and slide bar 5, to facilitate round drafting.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.
Claims (5)
1. a kind of compasses for teaching, it is characterised in that：Including fixing leg（1）And movable supporting leg（2）, and the fixing leg
（1）With the movable supporting leg（2）Top be hinged, the movable supporting leg（2）Bottom is provided with fixing sleeve（3）, the fixation
Set（3）On be provided with the first locking member（301）, chalk can be held out against；
The fixing leg（1）Bottom is provided with angular adjustment seat（4）, the angular adjustment seat（4）Pass through the second locking member
（401）Mounted on the fixing leg（1）On；The angular adjustment seat（4）Inside is equipped with slide bar（5）, and the slide bar（5）
It is vertically arranged, with the angular adjustment seat（4）It is slidably connected, the angular adjustment seat（4）Lower section is provided with support base（402）,
And the support base（402）With the angular adjustment seat（4）Rotation connection, the slide bar（5）Downward through the support base
（402）, the support base（402）Lateral surface on be provided with third locking member（403）, can be to the slide bar（5）It is locked
Tightly；
The support base（402）Outside be provided with several oscillating rods（6）, and the oscillating rod（6）It is circularly and evenly distributed
In the support base（402）On, the oscillating rod（6）Upper end is mounted on the support base by axis pin（402）On, the swing
Bar（6）Lower end is provided with sucker（601）, the slide bar（5）On be additionally provided with slip ring（7）, can be along the slide bar（5）Upper downslide
It moves, and the slip ring（7）Positioned at the support base（402）Lower section, the slip ring（7）Lateral surface be provided with the 4th locking member
（701）, can be by the slip ring（7）It is fixed on the slide bar（5）On, the slip ring（7）Lateral surface be additionally provided with several
Acclivitous supporting rod（702）, and the supporting rod（702）Quantity and position with the oscillating rod（6）It is corresponding, institute
State supporting rod（702）Lower end by axis pin be mounted on the slip ring（7）On, upper end is mounted on the oscillating rod by axis pin
（6）On.
2. a kind of compasses for teaching according to claim 1, it is characterised in that：First locking member（301）, described second
Locking member（401）, the third locking member（403）, the 4th locking member（701）It is locking knob.
3. a kind of compasses for teaching according to claim 1, it is characterised in that：The support base（402）It is installed by bearing
In the angular adjustment seat（4）On.
4. a kind of compasses for teaching according to claim 1, it is characterised in that：The sucker（601）With the oscillating rod（6）
It is connected by axis pin.
5. a kind of compasses for teaching according to claim 1, it is characterised in that：The slide bar（5）Top and bottom be all provided with
It is equipped with round boss, and the diameter of round boss is more than the slide bar（5）Outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820757592.5U CN207955116U (en) | 2018-05-21 | 2018-05-21 | A kind of compasses for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820757592.5U CN207955116U (en) | 2018-05-21 | 2018-05-21 | A kind of compasses for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207955116U true CN207955116U (en) | 2018-10-12 |
Family
ID=63727852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820757592.5U Expired - Fee Related CN207955116U (en) | 2018-05-21 | 2018-05-21 | A kind of compasses for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207955116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202984A (en) * | 2019-05-24 | 2019-09-06 | 南阳理工学院 | A kind of mathematical education adjustable type compasses |
-
2018
- 2018-05-21 CN CN201820757592.5U patent/CN207955116U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202984A (en) * | 2019-05-24 | 2019-09-06 | 南阳理工学院 | A kind of mathematical education adjustable type compasses |
| CN110202984B (en) * | 2019-05-24 | 2020-10-02 | 南阳理工学院 | Adjustable compasses for mathematical education |
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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 |
Granted publication date: 20181012 Termination date: 20190521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |