CN207291430U

CN207291430U - A kind of teaching folding compasses

Info

Publication number: CN207291430U
Application number: CN201720386502.1U
Authority: CN
Inventors: 白培锋; 刘红军
Original assignee: QINGCHUAN COUNTY MUYV JUNIOR MIDDLE SCHOOL
Current assignee: QINGCHUAN COUNTY MUYV JUNIOR MIDDLE SCHOOL
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2018-05-01
Anticipated expiration: 2027-04-13

Abstract

It the utility model is related to educational aid field, disclose a kind of teaching folding compasses, including fixed seat, strut, rotation axis, swingle, drawing sliding block and folding shaft member, fixed seat is the transparent cylinder of upper end closure, fixed seat bottom is equipped with magnet ring, fixed seat top center is equipped with opening, strut is highly more than fixed seat, strut bottom is concordant with base bottom, expose through opening and at the top of fixed seat on strut top, rotary sleeve is located on the strut exposed at the top of fixed seat, swingle is strip, swingle includes swingle one and swingle two, the top of swingle one is connected with shaft, the end of swingle one is connected by folding shaft member with the top of swingle two, swingle two can be drawn close to the direction of swingle one, drawing sliding block is arranged with swingle.The utility model has technique effect fixed, convenient for collecting.

Description

A kind of teaching folding compasses

Technical field

It the utility model is related to educational aid field, and in particular to a kind of teaching folding compasses.

Background technology

Compasses are in mathematics and drawing, for drawing a kind of instrument of circle or arc.Teacher is during mathematical education, usually Need to draw circle or arc on blackboard by compasses.The circle or arc that standard is drawn are conducive to cognition and understanding of the student to figure, Improve the quality of teaching.

Prior art compasses for teaching usually has two feet, and upper end is hinged, and lower end arbitrarily can separate or close up, to adjust The size of circle or arc radius is painted, the end of a foot is needle point, and the end of another foot can load chalk.In use, use ruler Son measures the distance between compasses bipod, and as radius, one end with pin is fixed on a place, as the center of circle, rotation One end with pencil.The contact surface very little of this compasses needle point and drawing surface, user in drawing course it is difficult to ensure that carry One end (i.e. the center of circle) of pin is not moved, so that the figure inaccuracy for failing or drawing that causes to draw.And present many classrooms are not The traditional blackboard made of brushing paint directly on metope is reconfigured at, the substitute is the new of on iron plate covering surface layer Board.The end of a foot is needle point in the prior art, and the compasses for teaching that the end of another foot can load chalk exists It is inconvenient for use on new type blackboard or blank.Due to the needs of teacher's demonstration, prior art compasses for teaching stock size is larger, no It is easily contained.

Utility model content

The purpose of this utility model is that：For prior art compasses for teaching needle point and drawing surface contact surface it is small, Inconvenient for use on novel writing board, not easily contained technical problem, the utility model provide a kind of teaching folding compasses.

The technical solution adopted in the utility model is as follows：

A kind of teaching folding compasses, including fixed seat, strut, rotation axis, swingle, drawing sliding block and folding shaft Part, the fixed seat are the transparent cylinder of upper end closure, and fixed seat bottom is equipped with the magnet ring being adapted to fixed seat, fixed seat top Portion center is equipped with opening, and the strut is highly more than fixed seat, and strut bottom is concordant with base bottom, and strut top passes through opening And expose at the top of fixed seat, the rotation axis is the cylindrical shaft for the center drilling being adapted to strut, and rotary sleeve is located at fixation The snap ring for being used for preventing that shaft from coming off is equipped with the strut that seat top is exposed, at the top of strut；The swingle is strip, rotation Bar includes swingle one and swingle two, and the top of the swingle one is connected with shaft, and the end of swingle one passes through folding Shaft member is connected with the top of swingle two, and swingle two can be drawn close to the direction of swingle one；It is arranged with swingle for pressing from both sides The drawing sliding block that pen is drawn, the drawing sliding block include pen clip ring and the retractable sliding shoe being adapted to swingle, the pen clip Ring, which is arranged on sliding shoe, leans on swingle radial direction side.

Further, in order to preferably determine center location, the strut bottom is equipped with sucker.

Further, the shaft member that folds includes same disk and the described two disks of connection that upper and lower two panels is oppositely arranged The folding rotary shaft at center, one jiao of the end of the swingle one are cut with scissors with one jiao of the top of corresponding swingle two by folding rotary shaft Connect, the end of swingle one is stuck between described two disks with the top of corresponding swingle two.

Further, the fixed seat sidewall bottom is equipped with annular recess, and the magnet ring is arranged in annular recess.

Further, draw in order to facilitate the operation sliding block, the sliding shoe is oppositely arranged identical recessed including upper and lower two Shape block, described two spill block one end are hinged, and the other end snaps connection.

Further, the spill block inner surface is equipped with the rubber pad for preventing that sliding shoe from moving.

Further, the pen clip ring includes annulus and adjusting bolt, and the adjusting bolt is by being arranged on annulus Screw hole is connected with annulus.

Further, two end of swingle is equipped with the limited block for being used for preventing that drawing sliding block from coming off.

Further, drawing size is determined for convenience, and the swingle is equipped with scale.

In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are：

1. the utility model fixed seat bottom is equipped with the magnet ring being adapted to fixed seat, this reality is used on novel writing board During with novel bow compass, magnet ring and iron plate attraction are strong, and fixed seat (center of circle) is not easily shifted, circle or the arc more standard of drafting；Gu Reservation be upper end closure transparent cylinder, strut bottom is concordant with base bottom, easy in the case of known center location into Row is drawn；The end of swingle one is connected by folding shaft member with the top of swingle two, and swingle two can be to swingle one Direction is drawn close, and volume is reduced, easy to store；

2. the utility model strut bottom is equipped with sucker, easy to preferably determine center location；

3. the utility model sliding shoe includes the upper and lower two identical spill blocks being oppositely arranged, two spill block one end hinges Connect, the other end snaps connection, easy to operate；

4. the utility model spill block inner surface is equipped with rubber pad, prevent sliding shoe from moving；

5. two end of the utility model swingle is equipped with limited block, prevent drawing sliding block from coming off；

6. the utility model swingle is equipped with scale, convenient definite drawing size.

Brief description of the drawings

Fig. 1 is the utility model overall structure diagram；

Fig. 2 is that the utility model swingle folds schematic diagram；

Fig. 3 is the utility model drawing slide block structure schematic diagram；

Marked in figure：1- magnet rings；2- struts；3- suckers；4- snap rings；5- shafts；6- fixed seats；7- swingles one；8- Fold shaft member；9- swingles two；10- pen clip rings；11- sliding shoes；12- limited blocks.

Embodiment

All features disclosed in this specification, can be with any in addition to mutually exclusive feature and/or step Mode combines.

Elaborate below in conjunction with the accompanying drawings to the utility model.

Embodiment 1, as shown in Figure 1 to Figure 3, a kind of teaching folding compasses, including fixed seat 6, strut 2, rotation axis 5th, swingle, drawing sliding block and fold shaft member 8, the fixed seat 6 be upper end closure transparent cylinder, 6 sidewall bottom of fixed seat Equipped with annular recess, magnet ring 1 is equipped with the annular recess, 6 top center of fixed seat is equipped with opening, the height of strut 2 More than fixed seat 6,2 bottom of strut is concordant with base bottom, and 2 bottom of strut is equipped with sucker 3,2 top of strut through opening and from The top of fixed seat 6 is exposed, and the rotation axis 5 is the cylindrical shaft for the center drilling being adapted to strut 2, and rotation axis 5 is set in fixation On the strut 2 that the top of seat 6 is exposed, the top of strut 2 is equipped with the snap ring 4 for being used for preventing that shaft 5 from coming off；The swingle is strip Shape, swingle are equipped with scale, and swingle includes swingle 1 and swingle 29, top and the shaft 5 of the swingle 1 Connection, one jiao of the end of the swingle 1 are hinged with one jiao of the top of corresponding swingle 29 by folding rotary shaft 5, folding shaft Part 8 includes same disk and the folding rotary shaft 5 for connecting described two disc centres, the swingle 1 that upper and lower two panels is oppositely arranged End be stuck in described two disks with the top of corresponding swingle 29 between, swingle 29 can be to the direction of swingle 1 Draw close, 29 end of swingle is equipped with the limited block 12 for being used for preventing that drawing sliding block from coming off；It is arranged with swingle and is painted for pen clip The drawing sliding block of figure, the drawing sliding block include pen clip ring 10 and the retractable sliding shoe 11 being adapted to swingle, the slip Block 11 includes the upper and lower two identical spill blocks being oppositely arranged, and described two spill block one end are hinged, and the other end snaps connection, recessed Shape block inner surface is equipped with the rubber pad for preventing that sliding shoe 11 from moving, and the pen clip ring 10 includes annulus and adjusting bolt, adjusts spiral shell Bolt is connected by the screw hole being arranged on annulus with annulus, and the pen clip ring 10 is arranged on sliding shoe 11 by swingle radial direction one Side.

When the utility model is used, drawing pen is positioned in pen clip ring 10, nib is contacted with board, operated Adjusting bolt makes drawing pen be fixed in pen clip ring 10, and suitable position is at according to the scale operation drawing sliding block on swingle Put, observe center location through fixed seat 6, the sucker 3 of 2 bottom of strut is placed in circle centre position, since magnet ring 1 acts on, the center of circle Fixed and not easily shifted, operation swingle makes its rotation complete to draw the process of circle or arc.When storage is needed after use, Operation swingle 29 draws close the direction of its to swingle 1, reduces the volume of compasses, convenient for collecting.

It is the embodiment of the utility model as described above.The utility model is not limited to the above embodiment, anyone It should learn the structure change made under the enlightenment of the utility model, it is every that there is same or like skill with the utility model Art scheme, each falls within the scope of protection of the utility model.

Claims

A kind of 1. teaching folding compasses, it is characterised in that：Including fixed seat (6), strut (2), shaft (5), swingle, paint Figure sliding block and folding shaft member (8), the fixed seat (6) are the transparent cylinder of upper end closure, and fixed seat (6) bottom is equipped with and fixation The magnet ring (1) of seat (6) adaptation, fixed seat (6) top center are equipped with opening, and the strut (2) is highly more than fixed seat (6), Strut (2) bottom is concordant with base bottom, and strut (2) top is exposed through opening and at the top of fixed seat (6), the shaft (5) it is the cylindrical shaft for the center drilling being adapted to strut (2), shaft (5) is set in the strut (2) exposed at the top of fixed seat (6) On, the snap ring (4) for being used for preventing that shaft (5) from coming off is equipped with the top of strut (2)；The swingle is strip, and swingle includes Swingle one (7) and swingle two (9), the top of the swingle one (7) are connected with shaft (5), the end of swingle one (7) It is connected by folding shaft member (8) with the top of swingle two (9), swingle two (9) can be drawn close to the direction of swingle one (7)； The drawing sliding block drawn for pen clip is arranged with swingle, the drawing sliding block includes pen clip ring (10) and is adapted to swingle Retractable sliding shoe (11), the pen clip ring (10), which is arranged on sliding shoe (11), leans on swingle radial direction side.
2. teaching folding compasses as claimed in claim 1, it is characterised in that：Strut (2) bottom is equipped with sucker (3)。
3. teaching folding compasses as claimed in claim 1, it is characterised in that：The folding shaft member (8) includes upper and lower two The same disk and the folding rotary shaft of the described two disc centres of connection that piece is oppositely arranged, the end one of the swingle one (7) Angle is hinged with one jiao of the top of corresponding swingle two (9) by folding rotary shaft, the end of swingle one (7) and corresponding swingle two (9) top is stuck between described two disks.
4. teaching folding compasses as claimed in claim 1, it is characterised in that：Fixed seat (6) sidewall bottom is equipped with Annular recess, magnet ring (1) are arranged in the annular recess.
5. teaching folding compasses as claimed in claim 1, it is characterised in that：The sliding shoe (11) includes upper and lower two The identical spill block being oppositely arranged, described two spill block one end are hinged, and the other end snaps connection.
6. teaching folding compasses as claimed in claim 5, it is characterised in that：The spill block inner surface is equipped with anti-on-slip The mobile rubber pad of motion block (11).
7. teaching folding compasses as claimed in claim 1, it is characterised in that：The pen clip ring (10) includes annulus and tune Bolt is saved, the adjusting bolt is connected by the screw hole being arranged on annulus with annulus.
8. teaching folding compasses as claimed in claim 1, it is characterised in that：Described two (9) end of swingle, which is equipped with, to be used In the limited block (12) for preventing that drawing sliding block from coming off.
9. teaching folding compasses as claimed in any of claims 1 to 8 in one of claims, it is characterised in that：On the swingle Equipped with scale.