CN203995315U - Teaching apparatus for mathematics - Google Patents
Teaching apparatus for mathematics Download PDFInfo
- Publication number
- CN203995315U CN203995315U CN201420420861.0U CN201420420861U CN203995315U CN 203995315 U CN203995315 U CN 203995315U CN 201420420861 U CN201420420861 U CN 201420420861U CN 203995315 U CN203995315 U CN 203995315U
- Authority
- CN
- China
- Prior art keywords
- bar
- straight
- inserting groove
- shaped inserting
- jack
- 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
Abstract
Teaching apparatus for mathematics.Math teacher at school time, needs to carry many various chis such as set square, graphometer, ruler often, more bothersome and trouble.Its composition of this product comprises: straight-bar (1), the end face of one end of straight-bar has L shaped inserting groove (2), the bottom surface of the other end of straight-bar has lower L shaped inserting groove (3), upper L shaped inserting groove and lower L shaped inserting groove all have jack, jack hole connection segment screw rod (4), segmented screw is through one end of straight-bar, the other end and the graphometer (5) of next straight-bar, segmented screw connects locating wheel (6), locating wheel is connected to 2 rake tooths (7) on same diameter, graphometer, upper L shaped inserting groove, lower L shaped inserting groove all has outer connecting hole, rake tooth centring ring (8) in outer connecting hole connects, rake tooth centring ring location in rake tooth inserts, locating wheel connecting thread rotary sleeve (9), screw thread rotation cover connecting handle (10).The utility model is for mathematical education.
Description
Technical field
the utility model relates to a kind of teaching apparatus for mathematics.
Background technology
math teacher at school time, needs to carry many various chis such as set square, graphometer, ruler often, more bothersome and trouble, and what sometimes need is many, once cannot be carried to teacher, relatively wastes time.
Summary of the invention
the purpose of this utility model is to provide a kind of need carry a combination ruler, can either meet the teaching apparatus for mathematics that mathematics class picture requires.
above-mentioned object realizes by following technical scheme:
a kind of teaching apparatus for mathematics, its composition comprises: straight-bar, the end face of one end of described straight-bar has L shaped inserting groove, the bottom surface of the other end of described straight-bar has lower L shaped inserting groove, described upper L shaped inserting groove and described lower L shaped inserting groove all have jack, described jack hole connection segment screw rod, described segmented screw is through one end of described straight-bar, the other end and the graphometer of next straight-bar, described segmented screw connects locating wheel, described locating wheel is connected to 2 rake tooths on same diameter, described graphometer, described upper L shaped inserting groove, described lower L shaped inserting groove all has outer connecting hole, rake tooth centring ring in described outer connecting hole connects, described rake tooth inserts described interior rake tooth centring ring location, described locating wheel connecting thread rotary sleeve, described screw thread rotation cover connecting handle.
described teaching apparatus for mathematics, the bottom of described upper L shaped inserting groove has hole snail, described hole snail is concentric with described jack, the length of described lower L shaped inserting groove is greater than the length of described upper L shaped inserting groove jack, rule is all carved with in the upper and lower of described straight-bar, and the length of all described straight-bars is not etc.
described teaching apparatus for mathematics, between described straight-bar, order connects to form Part I combination ruler in turn by 2 right-angle sides of 30 ° of right angled triangles and the length of a hypotenuse, between described straight-bar, order connects to form Part II combination ruler in turn by 2 right-angle sides of 45 ° of right angled triangles and the length of a hypotenuse, between described Part I combination ruler and described Part II combination ruler, is connected by one group of straight-bar.
beneficial effect:
1. the straight-bar that the utility model adopts has 2 parts according to the order assembling of 30 ° of right angled triangles and 45 ° of right angled triangles, can form respectively 30 ° of right angled triangles and 45 ° of right angled triangles, convenient picture used, in the time of class-teaching of teacher, do not need to carry more instrument, both saved time, saved again strength.
the bottom of segmented screw that the utility model adopts is polished rod, and top is screw rod, can either meet locating wheel and rotate, and again can connecting thread rotary sleeve positions, easy to use, accurate positioning.
when the utility model does not need to locate, rake tooth centring ring and locating wheel are pulled open, rake tooth centring ring is separated with rake tooth, after fixing angle by graphometer between 2 straight-bars, locating wheel is depressed and rake tooth snapped in rake tooth centring ring position.
of the present utility model multiple functional, use flexibly, can replace existing 30 ° of right angled triangles, 45 ° of right angled triangles, ruler, graphometers to use, saved the trouble of simultaneously carrying 30 ° of right angled triangles, 45 ° of right angled triangles, ruler, graphometer.
brief description of the drawings:
accompanying drawing 1 is the syndeton schematic diagram between segmented screw, locating wheel, the screw thread rotation of this product overlapped.
accompanying drawing 2 is surface structure schematic diagrames of this product.
accompanying drawing 3 is structural representations of straight bar fold in accompanying drawing 2.
accompanying drawing 4 is the partial enlarged drawings in accompanying drawing 2.
detailed description of the invention:
embodiment 1:
a kind of teaching apparatus for mathematics, its composition comprises: straight-bar 1, the end face of one end of described straight-bar has L shaped inserting groove 2, the bottom surface of the other end of described straight-bar has lower L shaped inserting groove 3, described upper L shaped inserting groove and described lower L shaped inserting groove all have jack, described jack hole connection segment screw rod 4, described segmented screw is through one end of described straight-bar, the other end and the graphometer 5 of next straight-bar, described segmented screw connects locating wheel 6, described locating wheel is connected to 2 rake tooths 7 on same diameter, described graphometer, described upper L shaped inserting groove, described lower L shaped inserting groove all has outer connecting hole, rake tooth centring ring 8 in described outer connecting hole connects, described rake tooth inserts described interior rake tooth centring ring location, described locating wheel connecting thread rotary sleeve 9, described screw thread rotation cover connecting handle 10.
can form polygon, convenient teaching is used, and can form pentagon, hexagon etc.
embodiment 2:
teaching apparatus for mathematics described in embodiment 1, the bottom of described upper L shaped inserting groove has hole snail 11, described hole snail is concentric with described jack, the length of described lower L shaped inserting groove is greater than the length of described upper L shaped inserting groove jack, rule 12 is all carved with in the upper and lower of described straight-bar, and the length of all described straight-bars is not etc.
the length that the length of lower L shaped inserting groove is greater than L shaped inserting groove jack facilitates between 2 straight-bars rotates.Hole snail can bury the end of segmented screw, makes this product unaffected when drawing on blackboard, uses flexibly.
embodiment 3:
teaching apparatus for mathematics described in embodiment 1, between described straight-bar, order connects to form Part I combination ruler in turn by 2 right-angle sides of 30 ° of right angled triangles and the length of a hypotenuse, between described straight-bar, order connects to form Part II combination ruler in turn by 2 right-angle sides of 45 ° of right angled triangles and the length of a hypotenuse, between described Part I combination ruler and described Part II combination ruler, is connected by one group of straight-bar.
embodiment 4:
teaching apparatus for mathematics described in above-described embodiment by 3 straight-bar bendings in order, and carries out determining 30 ° of right angled triangles of angle composition by graphometer in the time that needs use 30 ° of right angled triangles, easy to use.
embodiment 5:
teaching apparatus for mathematics described in above-described embodiment by 3 straight-bar bendings in order, and carries out determining 30 ° of right angled triangles of angle composition by graphometer in the time that needs use 45 ° of right angled triangles, easy to use.
Claims (3)
1. a teaching apparatus for mathematics, its composition comprises: straight-bar, it is characterized in that: the end face of one end of described straight-bar has L shaped inserting groove, the bottom surface of the other end of described straight-bar has lower L shaped inserting groove, described upper L shaped inserting groove and described lower L shaped inserting groove all have jack, described jack hole connection segment screw rod, described segmented screw is through one end of described straight-bar, the other end and the graphometer of next straight-bar, described segmented screw connects locating wheel, described locating wheel is connected to 2 rake tooths on same diameter, described graphometer, described upper L shaped inserting groove, described lower L shaped inserting groove all has outer connecting hole, rake tooth centring ring in described outer connecting hole connects, described rake tooth inserts described interior rake tooth centring ring location, described locating wheel connecting thread rotary sleeve, described screw thread rotation cover connecting handle.
2. teaching apparatus for mathematics according to claim 1, it is characterized in that: the bottom of described upper L shaped inserting groove has hole snail, described hole snail is concentric with described jack, the length of described lower L shaped inserting groove is greater than the length of described upper L shaped inserting groove jack, rule is all carved with in the upper and lower of described straight-bar, and the length of all described straight-bars is not etc.
3. teaching apparatus for mathematics according to claim 2, it is characterized in that: between described straight-bar, order connects to form Part I combination ruler in turn by 2 right-angle sides of 30 ° of right angled triangles and the length of a hypotenuse, between described straight-bar, order connects to form Part II combination ruler in turn by 2 right-angle sides of 45 ° of right angled triangles and the length of a hypotenuse, between described Part I combination ruler and described Part II combination ruler, is connected by one group of straight-bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420420861.0U CN203995315U (en) | 2014-07-29 | 2014-07-29 | Teaching apparatus for mathematics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420420861.0U CN203995315U (en) | 2014-07-29 | 2014-07-29 | Teaching apparatus for mathematics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203995315U true CN203995315U (en) | 2014-12-10 |
Family
ID=52035370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420420861.0U Expired - Fee Related CN203995315U (en) | 2014-07-29 | 2014-07-29 | Teaching apparatus for mathematics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203995315U (en) |
-
2014
- 2014-07-29 CN CN201420420861.0U patent/CN203995315U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |