CN203864275U

CN203864275U - Mathematical teaching drawing template

Info

Publication number: CN203864275U
Application number: CN201420317688.1U
Authority: CN
Inventors: 道路
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-15
Filing date: 2014-06-15
Publication date: 2014-10-08
Anticipated expiration: 2024-06-15

Abstract

The utility model provides a mathematical teaching drawing template. The mathematical teaching drawing template comprises a main ruler, an auxiliary ruler and a protractor. The right end of the auxiliary ruler is provided with a chalk fixing seat, and the chalk fixing seat comprises a mounting seat at the right end of the auxiliary ruler, a sleeve which is mounted inside the mounting seat and can move axially along the amounting seat, and a plurality of clamping jaws which are circumferentially and uniformly distributed; the right end of the sleeve is provided with a radially-extending flanging arranged outside the mounting seat, and the left end of the sleeve is connected with the mounting seat through an annular ring; the clamping jaws are hinged to the right end of the mounting seat, and the diameters of the inner surfaces of the plurality of clamping jaws form a chalk clamping space; the right end of the main ruler is provided with a protrude rotating shaft. The mathematical teaching drawing template also comprises a positioning seat fixed onto the blackboard through a sucker, the center of the fixing seat is provided with a rotating hole matched with the rotating shaft, and the sucker is fixed on the end portion of the positioning seat. The mathematical teaching drawing template has no sharp parts and accordingly avoids hurting teachers; chalk can be firmly fixed through the chalk fixing seat, thereby avoiding dropping off during a drawing process.

Description

Mathematical education drawing template

Technical field

The utility model relates to a kind of mathematical education equipment, particularly relates to a kind of mathematical education drawing template.

Background technology

In mathematical education process, teacher need to use drawing template (claiming again drawing instrument) to draw various figures conventionally, as figures such as straight line, acute angle, right angle, obtuse angle, equilateral triangle, isosceles triangle, circle, camber lines.Draw multiple figures for the ease of teacher with a drawing instrument, application number is that 200720100437.8 Chinese utility model patent description discloses a kind of digital drafting instrument, the left end of main scale and angulation dish are fixed, the top extended line of main scale is crossed the center of circle of angulation dish, the fixing compasses pin of right-hand member of main scale, the secondary left end of chi and the center of circle of angulation dish are hinged, the following extended line of secondary chi is crossed the center of circle of angulation dish, the fixing bow pen holder of right-hand member of secondary chi, has graduation mark on described main scale, secondary chi and angulation dish.

But this digital drafting instrument in actual use, exists following defect: when bow pen holder clamping chalk, clamping dynamics is inadequate, easily cause dropping of in drawing course chalk; Compasses pin is sharper, easily hurts sb.'s feelings.

Utility model content

The defect of prior art and various weak point in view of the above, the technical problems to be solved in the utility model is to provide a kind of mathematical education drawing template that uses safety and the clamping great efforts to chalk.

For achieving the above object, the utility model provides a kind of mathematical education drawing template, comprise main scale, secondary chi, be located at the angulation dish of main scale left end, described secondary chi is connected by connecting axle with main scale, the two edges up and down of described main scale, the two edges up and down of secondary chi, and the top edge of angulation dish is equipped with graduation mark, the top edge extended line of described main scale, the lower limb extended line of secondary chi all passes through the center of circle of angulation dish, described secondary chi right-hand member is provided with a chalk holder, described chalk holder comprises the mount pad that is fixed on secondary chi right-hand member, be located in mount pad and can be along the axially movable sleeve of mount pad, and be located at the multiple circumferential equally distributed jaw in sleeve, described sleeve right-hand member is provided with a flange radially extending, this flange is placed in the outside of mount pad, described sleeve left end is connected with mount pad by ring spring, the right-hand member of described jaw and mount pad is hinged, the inner surface diameter of multiple jaws forms a chalk grasping part, and be fixed with elastic layer on the inner surface of jaw, the right-hand member of described main scale is provided with the rotating shaft of a protrusion, also comprises that one is fixed on the positioning seat on blackboard by sucker, in described positioning seat, be provided with one match with rotating shaft turn hole, described sucker is fixed on the end of positioning seat, the surface of described angulation dish is provided with two outstanding limited blocks, and the upper surface of limited block is the horizontal plane flushing with main scale top edge.

Further, described main scale is provided with arc groove, and secondary chi is provided with curved groove.

Preferably, the material of described main scale and secondary chi is stainless steel.

Further, the equal tight fit of top edge of the two edges up and down of the two edges up and down of described main scale, secondary chi and angulation dish has a transparent guard shield, and described graduation mark is positioned at guard shield.

Preferably, described claw is 3-5.

Further, the right-hand member of described claw inner surface is provided with the lead-in chamfered being tilted to the left.

The mathematical education that the utility model relates to has following beneficial effect with drawing template:

This drawing template can be drawn the figures such as triangle, straight line, circle, angle, and not sharp-pointed place on this drawing template, therefore can not injure teacher, and can firmly fix chalk by chalk holder, to the blessing great efforts of chalk, ensure that in picture process, chalk can not drop, thereby ensure teaching quality.

Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be elaborated to this patent.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation of chalk holder in the utility model.

Element numbers explanation

1 main scale

11 shafts

12 arc grooves

2 secondary chis

21 curved grooves

3 angulation dishes

4 chalk holders

41 mount pads

42 sleeves

43 flanges

44 jaws

45 lead-in chamfered

46 ring springs

47 elastic layers

5 suckers

6 positioning seats

61 turn hole

7 limited blocks

Detailed description of the invention

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.

As depicted in figs. 1 and 2, the utility model provides a kind of mathematical education drawing template, comprise main scale 1, secondary chi 2, be located at the angulation dish 3 of main scale 1 left end, described secondary chi 2 is connected by connecting axle with main scale 1, the two edges up and down of described main scale 1, the two edges up and down of secondary chi 2, and the top edge of angulation dish 3 is equipped with graduation mark, the top edge extended line of described main scale 1, the lower limb extended line of secondary chi 2 all passes through the center of circle of angulation dish 3, described secondary chi 2 right-hand members are provided with a chalk holder 4, described chalk holder 4 comprises the mount pad 41 that is fixed on secondary chi 2 right-hand members, be located in mount pad 41 and can be along the axially movable sleeve 42 of mount pad 41, and be located at the multiple circumferential equally distributed jaw 44 in sleeve 42, described sleeve 42 right-hand members are provided with a flange 43 radially extending, this flange 43 is placed in the outside of mount pad 41, described sleeve 42 left ends are connected with mount pad 41 by ring spring 46, described jaw 44 is hinged with the right-hand member of mount pad 41, the inner surface diameter of multiple jaws 44 forms a chalk grasping part, and on the inner surface of jaw 44, be fixed with elastic layer 47, the right-hand member of described main scale 1 is provided with the shaft 11 of a protrusion, also comprises that one is fixed on the positioning seat 6 on blackboard by sucker 5, in described positioning seat 6, be provided with one match with shaft 11 turn hole 61, described sucker 5 is fixed on the end of positioning seat 6, the surface of described angulation dish 3 is provided with two outstanding limited blocks 7, and the upper surface of limited block 7 is the horizontal plane flushing with main scale 1 top edge.

In chalk is fixed on to chalk holder 4, make, first sleeve 42 be pressed in mount pad 41 left and maintain, ring spring 46 is compressed, and the flange 43 of sleeve 42 right-hand members can be placed sleeve 42 and is all pressed in mount pad 41; Teacher inserts chalk in chalk grasping part, jaw 44 can a little outwards strut under the effect of chalk, unclamp sleeve 42, sleeve 42 moves right under the spring-force driven dual of ring spring 46, thereby multiple jaws 44 are radially moved inward, and the elastic layer 47 on the inner surface of jaw 44 is extruded, thereby makes jaw 44 tightly clamp chalk, to ensure that in picture process, chalk can not drop, thereby ensure teaching quality.In addition, this drawing template can be drawn the figures such as triangle, straight line, circle, angle, in the time of draw circles or circular arc, by sucker 5, positioning seat 6 is fixed on blackboard, Zhuan Kong 61 centers in positioning seat 6 are circle, realize rotation by shaft 11 with turning cooperatively interacting of hole 61, have cancelled sharp-pointed compasses pin of the prior art, therefore not sharp-pointed place on this drawing template, therefore can not injure teacher.

Further, as described in Figure 1, described main scale 1 is provided with arc groove 12, is convenient to draw rapidly and accurately camber line; Secondary chi 2 is provided with curved groove 21, is convenient to curve plotting rapidly and accurately.

Preferably, the material of described main scale 1 and secondary chi 2 is stainless steel.

Further, the equal tight fit of top edge of the two edges up and down of described main scale 1, the two edges up and down of secondary chi 2 and angulation dish 3 has a transparent guard shield, described graduation mark is positioned at guard shield, thereby can avoid graduation mark frayed, the service life of improving this drawing template.

Preferably, described claw is 3-5.

Further, the right-hand member of described claw inner surface is provided with the lead-in chamfered 45 being tilted to the left, and is convenient to filling in of chalk.

In sum, the utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.

A kind of mathematical education drawing template above the utility model embodiment being provided is described in detail; for one of ordinary skill in the art; according to the thought of the utility model embodiment; all will change in specific embodiments and applications; in sum; this description should not be construed as restriction of the present utility model, and all any changes of making according to the utility model design philosophy are all within protection domain of the present utility model.

Claims

1. a mathematical education drawing template, comprise main scale (1), secondary chi (2), be located at the angulation dish (3) of main scale (1) left end, described secondary chi (2) is connected by connecting axle with main scale (1), the two edges up and down of described main scale (1), the two edges up and down of secondary chi (2), and the top edge of angulation dish (3) is equipped with graduation mark, the top edge extended line of described main scale (1), the lower limb extended line of secondary chi (2) all passes through the center of circle of angulation dish (3), described secondary chi (2) right-hand member is provided with a chalk holder (4), it is characterized in that: described chalk holder (4) comprises the mount pad (41) that is fixed on secondary chi (2) right-hand member, be located in mount pad (41) and can be along the axially movable sleeve of mount pad (41) (42), and be located at the multiple circumferential equally distributed jaw (44) in sleeve (42), described sleeve (42) right-hand member is provided with a flange (43) radially extending, this flange (43) is placed in the outside of mount pad (41), described sleeve (42) left end is connected with mount pad (41) by ring spring (46), described jaw (44) is hinged with the right-hand member of mount pad (41), the inner surface diameter of multiple jaws (44) forms a chalk grasping part, and on the inner surface of jaw (44), be fixed with elastic layer (47), the right-hand member of described main scale (1) is provided with the shaft (11) of a protrusion, also comprise that one is fixed on the positioning seat (6) on blackboard by sucker (5), in described positioning seat (6), be provided with one match with shaft (11) turn hole (61), described sucker (5) is fixed on the end of positioning seat (6), the surface of described angulation dish (3) is provided with two outstanding limited blocks (7), the horizontal plane of the upper surface of limited block (7) for flushing with main scale (1) top edge.

2. mathematical education drawing template according to claim 1, is characterized in that: described main scale (1) is provided with arc groove (12), and secondary chi (2) is provided with curved groove (21).

3. mathematical education drawing template according to claim 1, is characterized in that: the material of described main scale (1) and secondary chi (2) is stainless steel.

4. mathematical education drawing template according to claim 1, it is characterized in that: the two edges up and down of the two edges up and down of described main scale (1), secondary chi (2) and the equal tight fit of top edge of angulation dish (3) have a transparent guard shield, and described graduation mark is positioned at guard shield.

5. mathematical education drawing template according to claim 1, is characterized in that: described claw is 3-5.

6. mathematical education drawing template according to claim 1, is characterized in that: the right-hand member of described claw inner surface is provided with the lead-in chamfered (45) being tilted to the left.