CN205130737U

CN205130737U - Teaching compasses

Info

Publication number: CN205130737U
Application number: CN201520877447.7U
Authority: CN
Inventors: 吴欢欢; 张丹丹
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-11-06
Filing date: 2015-11-06
Publication date: 2016-04-06
Anticipated expiration: 2025-11-06

Abstract

The utility model discloses a teaching compasses, include hand (hold), location axle, rotation axis scissors hinge, chalk cover and fixed point head, the hand (hold) setting is in scissors hinge top, and rotation axis and location hub connection are in scissors hinge below, and the setting of fixed point head is overlapped and is set up at rotation axis work end at location axle work end, chalk, the fixed point head be the sucking disc, is connected through the screw rod with location axle, be equipped with the top in the fixed point head, the top is connected with the switch, the first adoption sucking disc of fixed point that the location axle was worked and is held can firmly hold the glass blackboard, the fixed point head need not the motion when drawing the circle rotation, and under the effect of screw rod, location axle drive axis of rotation draws the circle, the chalk cover adopts soft rubber can wrap up the chalk, can not make the chalk drop, after the drawing is made plausible, as long as it just can remove compasses follow blackboard to press the button, so, the utility model discloses simple structure, it is easy and simple to handle, the new product in the teaching.

Description

A kind of compasses of imparting knowledge to students

Technical field

The utility model relates to the compasses of teaching, comprise hand handle, locating shaft, rotating shaft scissors hinge, chalk sleeve and fixed point head, hand is being arranged on above scissors hinge, rotating shaft and locating shaft are connected to below scissors hinge, fixed point head is arranged on locating shaft working end, and chalk sleeve is arranged on rotating shaft working end.

Background technology

Compasses are in mathematics and drawing, be used to the instrument drawing circle or string, be usually used in painting round drawing instrument, there are two pin, upper end thereof, lower end can arbitrarily separate or close up, to adjust the size of painted arc radius, the end of a pin is needle point, and the end of another pin can load the pin painting pencil line or the line of ink marker.Extension rod loaded onto by some compasses, can draw larger circle.There are trammel, springer bow and heart bow compasses etc. of living.

At present, existing educational compasses mostly is the common compasses of lever and wheel shaft composition, and when blackboard charts, locating shaft easily skids, thus wastes time and energy, and cannot meet present teaching demand.

Utility model content

The purpose of this utility model is to provide a kind of compasses of imparting knowledge to students, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme: a kind of compasses of imparting knowledge to students, comprise hand handle, locating shaft, rotating shaft scissors hinge, chalk sleeve and fixed point head, hand is being arranged on above scissors hinge, and rotating shaft and locating shaft are connected to below scissors hinge, fixed point head is arranged on locating shaft working end, chalk sleeve is arranged on rotating shaft working end, and described fixed point head is sucker, is connected by screw rod with locating shaft, be provided with top in fixed point head, top is connected with switch.

Preferably, described switch-linear hybrid, outside locating shaft, comprises button and buckle, and buckle is connected with top by the connecting axle be arranged in locating shaft, and buckle extends locating shaft, and button covers buckle.

Preferably, chalk sleeve is elasticity soft rubber.

Compared with prior art, the beneficial effects of the utility model are: the fixed point head of locating shaft working end of the present utility model adopts sucker, firmly can hold Glass blackboard; Draw when circle rotates and fix a point head without the need to motion, under the effect of screw rod, locating shaft driven rotary axle rotates picture circle; Chalk sleeve adopts soft rubber to wrap chalk, and chalk can not be made to come off; After drawing round end, just compasses can be removed from blackboard as long as push button, so the utility model structure is simple, easy and simple to handle, be the new product in teaching.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation.

Fig. 2 is 9 place's enlarged drawings in Fig. 1.

In figure: 1 scissors hinge, 2 hand handles, 3 rotating shafts, 4 chalk sleeves, 5 locating shafts, 6 fixed point heads, 7 screw rods, 8 tops, 9 switches, 10 buckles, 11 buttons.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Embodiment 1:

Refer to Fig. 1, the utility model provides a kind of technical scheme: a kind of compasses of imparting knowledge to students, comprise hand 2, locating shaft 5, rotating shaft 3, scissors hinge 1, chalk sleeve 4 and fixed point 6, hand is arranged on 2 above scissors hinge 1, rotating shaft 3 and locating shaft 5 are connected to below scissors hinge 1, fixed point 6 is arranged on locating shaft 5 working end, chalk sleeve 4 is arranged on rotating shaft 3 working end, fixed point 6 is suckers, be connected by screw rod 7 with locating shaft 5, be provided with top 8 in fixed point 6, top 8 is connected with switch 9; Top 8 is controlled by switch 9, and during picture, top 8 contracting, in locating shaft 5, is drawn and to be pressed switch 9 after terminating and come directly towards 8 and stretch out, and removes the absorption affinity of fixed point 6.

Embodiment 2:

Refer to Fig. 1 and Fig. 2, the utility model provides a kind of technical scheme: a kind of compasses of imparting knowledge to students, comprise hand 2, locating shaft 5, rotating shaft 3, scissors hinge 1, chalk sleeve 4 and fixed point 6, hand is arranged on 2 above scissors hinge 1, rotating shaft 3 and locating shaft 5 are connected to below scissors hinge 1, fixed point 6 is arranged on locating shaft 5 working end, chalk sleeve 4 is arranged on rotating shaft 3 working end, fixed point 6 is suckers, be connected by screw rod 7 with locating shaft 5, top 8 is provided with in fixed point 6, top 8 is connected with switch 9. and switch 9 is arranged on outside locating shaft 5, comprise button 11 and buckle 10, buckle 10 is connected with top 8 by the connecting axle be arranged in locating shaft 5, buckle 10 extends locating shaft 5, button 11 covers buckle 10, locating shaft 5 is provided with a through hole, stretches out and be connected on through hole for buckle 10, is hollow in locating shaft 5, and for being connected with top 8 for buckle 10, button 11 is duroplasts with the face of finger contact, is convenient to press buckle 11.

Embodiment 3:

The utility model provides a kind of technical scheme: a kind of compasses of imparting knowledge to students, comprise hand 2, locating shaft 5, rotating shaft 3, scissors hinge 1, chalk sleeve 4 and fixed point 6, hand is arranged on 2 above scissors hinge 1, rotating shaft 3 and locating shaft 5 are connected to below scissors hinge 1, fixed point 6 is arranged on locating shaft 5 working end, chalk sleeve 4 is arranged on rotating shaft 3 working end, fixed point 6 is suckers, be connected by screw rod 7 with locating shaft 5, top 8 is provided with in fixed point 6, top 8 is connected with switch 9, chalk sleeve 4 is elasticity soft rubbers, chalk sleeve 4 firmly can entangle chalk, placement chalk drops.

In sum, a fixed point 6 employing sucker of locating shaft 5 working end of the present utility model, firmly can hold Glass blackboard; Draw when circle rotates that fixed point 6 is without the need to motion, under the effect of screw rod 7, locating shaft 5 driven rotary axle 3 rotates picture circle; Chalk sleeve 4 adopts soft rubber to wrap chalk, and chalk can not be made to come off; Draw after circle terminates, 11 just compasses can be removed from blackboard as long as push button, so the utility model structure is simple, easy and simple to handle, be the new product in imparting knowledge to students.

Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.

Claims

1. compasses of imparting knowledge to students, comprise hand (2), locating shaft (5), rotating shaft (3) scissors hinge (1), chalk sleeve (4) and fixed point head (6), hand is arranged on scissors hinge (1) top (2), rotating shaft (3) and locating shaft (5) are connected to scissors hinge (1) below, fixed point head (6) is arranged on locating shaft (5) working end, chalk sleeve (4) is arranged on rotating shaft (3) working end, it is characterized in that: described fixed point head (6) is sucker, be connected by screw rod (7) with locating shaft (5), top (8) is provided with in fixed point head (6), top (8) is connected with switch (9).

2. a kind of compasses of imparting knowledge to students according to claim 1, it is characterized in that: described switch (9) is arranged on locating shaft (5) outside, comprise button (11) and buckle (10), buckle (10) is connected with top (8) by the connecting axle be arranged in locating shaft (5), buckle (10) extends locating shaft (5), and button (11) covers buckle (10).

3. a kind of compasses of imparting knowledge to students according to claim 1, is characterized in that: described chalk sleeve (4) is elasticity soft rubber.