CN213322397U

CN213322397U - Teaching aid compasses

Info

Publication number: CN213322397U
Application number: CN202022017913.8U
Authority: CN
Inventors: 吴夏莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-06-01
Anticipated expiration: 2030-09-15

Abstract

The utility model relates to a compasses, in particular to teaching aid compasses. The blackboard eraser comprises a compass head, a first compass leg and a second compass leg which are connected in a rotating mode relative to the compass head, wherein a sucker is arranged on the other end, facing the compass head, of the first compass leg, a telescopic mechanism enabling the sucker to stretch out and draw back is arranged in the first compass leg, a chalk fixing piece is arranged on the other end, facing the compass head, of the second compass leg, and a white board pen fixing piece is detachably arranged on the second compass leg. The utility model provides a teaching aid compasses, this compasses can fix the chalk promptly, can fix the blank pen again, no matter on the blackboard or on the blank, can use same kind of compasses, and the commonality is stronger, and in the sucking disc can contract the compasses leg, is convenient for deposit, the sucking disc is not fragile, simple structure is practical.

Description

Teaching aid compasses

Technical Field

The utility model relates to a compasses, in particular to teaching aid compasses.

Background

The compasses have the main function of making circles, and comprise a compass head and two compass legs which are rotationally connected relative to the compass head, wherein the two compass legs are respectively fixed with a needle body and a pen tool, and the needle body is used as a positioning circle center and the pen tool is drawn to draw an arc line.

Teacher is at the teaching in-process, need be used for teaching aid compasses, on the blackboard, it is inconvenient to use the needle body as the centre of a circle, consequently there are many on the existing market to replace the needle body with the sucking disc, it is very convenient, but at present teaching in-process, some training institutions mainly utilize the blank teaching, and present teaching aid compasses are single fixed chalk or single fixed whiteboard pen, can not be general each other, and the compasses are when not using in addition, when depositing, the sucking disc is outside the compasses leg, easily lead to damaging.

Disclosure of Invention

In order to overcome the not enough of background art, the utility model provides a teaching aid compasses, this compasses can fix the chalk promptly, can fix the blank pen again, no matter on the blackboard or on the blank, can use same kind of compasses, and the commonality is stronger, and in the sucking disc can contract the compasses leg, be convenient for deposit, the sucking disc is not fragile, simple structure is practical.

The utility model adopts the technical proposal that: the utility model provides a teaching aid compasses, rotates first compasses leg and second compasses leg of connecting including compasses head and relative compasses head, first compasses leg be equipped with the sucking disc on the other end towards the compasses head, be equipped with the telescopic machanism that makes the sucking disc flexible in the first compasses leg, second compasses leg be equipped with the chalk mounting on the other end towards the compasses head, detachable is equipped with blank pen mounting on the second compasses leg.

Adopt above-mentioned technical scheme, set up the sucking disc on the first compasses leg, use the sucking disc as the location centre of a circle, be equipped with the chalk mounting on the second compasses leg, and detachable is equipped with whiteboard pen mounting, the chalk can be fixed to the chalk mounting, whiteboard pen mounting can fix the whiteboard pen, just so can realize being used for the chalk to draw a circle or draw a circle with whiteboard pen, at the teaching in-process, the blackboard all can use same compasses, therefore, the commonality is strong, and after the flexible subassembly sets up, when the compasses do not use, can contract the sucking disc in the first compasses leg, the sucking disc is not fragile when placing like this, be convenient for deposit, simple structure is practical.

The utility model discloses further set up to: telescopic machanism including telescopic link and spring, first compasses leg be equipped with the cavity towards the other end of compasses head, in the cavity was located to telescopic link one end, the other end was connected with the sucking disc outside being in the cavity, the telescopic link was served and is equipped with the spring sleeve pole that the diameter is less than the telescopic link in being in one of cavity, the spring sleeve pole forms spacing step with the telescopic link, the spring sleeve contradict with spacing step in one end on the spring sleeve pole, the other end is contradicted with the cavity inner wall, be equipped with the locating part fixed to the telescopic link between telescopic link and the first compasses leg.

Adopt above-mentioned technical scheme, the telescopic link inserts in the cavity of first compasses leg, spring sleeve pole and telescopic link integrated into one piece, and the spring housing is on the spring sleeve pole to through fixed in the locating part, realize the flexible of telescopic link, and the sucking disc sets up on the telescopic link, and the flexible realization sucking disc of contracting through the telescopic link is arranged in first compasses leg or is extended outside the telescopic link.

The utility model discloses further set up to: the locating part include a limiting rod, the surface of first compasses leg be equipped with the cavity switch on with the spout, the spout top is equipped with the spacing groove perpendicular and that switches on with the spout, the limiting rod locate telescopic link and the junction of spring housing pole, the other end that the limiting rod is connected with the telescopic link extend and send out the spout and can slide to the spacing inslot along the spout.

Adopt above-mentioned technical scheme, the gag lever post is connected with the telescopic link, when the compasses will be used, the gag lever post slides to the spout bottom along the spout, the gag lever post is because extend to outside the spout, when sliding to the spout bottom, blocked, at this moment the sucking disc is outside the cavity, and when the compasses do not use, the gag lever post upwards slides along the spout, when sliding to the gag lever post, arrange the gag lever post in the spacing inslot, at this moment telescopic link compression spring upwards slides, the sucking disc is followed upwards to shrink in the cavity, realize the shrink of sucking disc, and during the use, slide the gag lever post to the spout in from the spacing groove, downwards slide can.

The utility model discloses further set up to: first compasses leg serve towards the sucking disc and be equipped with the fixing base, the fixing base serves towards one of sucking disc and is equipped with the opening that switches on with the cavity, is equipped with at least three fixing base opening on this fixing base, the surface of fixing base is equipped with the fixed slot, is equipped with the rubber sleeve fixed to the fixing base in the fixed slot.

Adopt above-mentioned technical scheme, set up the opening on the fixing base for the fixing base has shrink elasticity, owing to fixed to the telescopic link, guarantees that the sucking disc is in the stationary state when using, can not rock, and the rubber sleeve then plays the fixed action to the fixing base, and the sucking disc takes off the rubber sleeve when the shrink, and the rubber sleeve has elasticity, and it is very convenient to take off, confirms the back when the sucking disc position, overlaps the rubber sleeve in the fixed slot, realizes the fixed to the fixing base.

The utility model discloses further set up to: the telescopic link is equipped with two fixed disks towards one of sucking disc serving interval, and the bottom of telescopic link is equipped with the sucking disc mount pad, is equipped with the sucking disc opening on this sucking disc mount pad, is equipped with the card on the sucking disc and goes into the interior spheroid fixing base of sucking disc opening.

Adopt above-mentioned technical scheme, the cavity diameter in the fixing base can be greater than the cavity diameter in the first compasses leg, consequently sets up the fixed disk and is in the fixing base, also is the stability that increases the sucking disc, and the sucking disc passes through the spheroid card in the sucking disc opening, and sucking disc and spheroid are the rubber body, make things convenient for the spheroidal card of sucking disc to go into, and the spheroid form makes the sucking disc adsorb on the blackboard, when drawing a circle, first compasses leg can spheroid relatively rotate, makes things convenient for the drawing of a circle.

The utility model discloses further set up to: the chalk fixing part comprises a second fixing seat arranged on the second compass leg, the second fixing seat is of a cavity structure, at least three second openings are formed in the second fixing seat, a second fixing groove is formed in the second fixing seat, and a second rubber sleeve is arranged in the second fixing groove.

By adopting the technical scheme, the second opening enables the second fixing seat to have the elasticity of contraction, when the chalk is clamped, the second rubber sleeve leaves the second fixing sleeve, after the chalk is clamped, the second rubber sleeve is fixed in the second fixing groove, the second fixing seat is fixed, the chalk is fixed in the second fixing seat, and the chalk is convenient to draw circles.

The utility model discloses further set up to: the whiteboard marker fixing piece comprises a fixing rod inserted into the second fixing seat, a fixing rod seat is arranged at the bottom of the fixing rod, a whiteboard marker sleeve is arranged on one side of the fixing rod seat, and a bolt for fixing the whiteboard marker is arranged on one side of the whiteboard marker sleeve.

By adopting the technical scheme, when the whiteboard marker is fixed, the fixing rod is inserted into the second fixing seat, the fixing principle is the same as that of the fixing chalk, the fixing rod is inserted into the whiteboard marker sleeve after being inserted, and then the second rubber sleeve is opened when the whiteboard marker is detached and the fixing rod is taken out, so that the whiteboard marker is simple and convenient to detach.

The utility model discloses further set up to: the head of the compass comprises a bolt, the first compass leg and the second compass leg are sleeved on the bolt through bolt holes, and an adjusting mechanism for adjusting the tightness of the first compass leg and the tightness of the second compass leg is arranged between the bolt and the first compass leg and between the bolt and the second compass leg.

Adopt above-mentioned technical scheme, second compasses leg and first compasses leg pass through the bolt hole and rotate along the bolt, realize the size of the diameter of the circle that the compasses were drawn, and adjustment mechanism can adjust its elasticity, uses more in a flexible way.

The utility model discloses further set up to: the adjusting mechanism comprises a spring, a spring groove is formed in the other end, facing the first compass leg, of the second compass leg, a limiting cover is arranged on the bolt, one end of the spring sleeve is arranged in the spring groove, and the other end of the spring sleeve is arranged in the limiting cover.

By adopting the technical scheme, the limiting cover is in threaded connection with the bolt, when the limiting cover needs to be tightened, the limiting cover rotates towards the direction of the second compass leg, the spring is compressed, when the limiting cover needs to be loosened, the limiting cover rotates in the opposite direction, and the adjustment is simple and convenient.

The utility model discloses further set up to: the second compass leg is provided with a convex block towards the first compass leg, the first compass leg is provided with a groove, and an anti-slip mat which is arranged in the groove and sleeved on the convex block is arranged between the first compass leg and the second compass leg.

By adopting the technical scheme, the anti-slip mat plays an anti-slip role.

The embodiments of the present invention will be further explained with reference to the drawings.

Drawings

FIG. 1 is an overall structure diagram of the present invention;

FIG. 2 is a view showing a second compass leg according to the present invention;

FIG. 3 is a partial structural view of the present invention;

fig. 4 is a partial view of the present invention.

Detailed Description

As shown in fig. 1-4, the technical solution adopted by the present invention is: the utility model provides a teaching aid compasses, rotates first compasses leg 2 and second compasses leg 3 of connecting including compasses head 1 and relative compasses head 1, first compasses leg 2 be equipped with sucking disc 4 towards the other end of compasses head 1, be equipped with in the first compasses leg 2 and make the telescopic machanism 5 of sucking disc 4 flexible, second compasses leg 3 be equipped with chalk mounting 6 towards the other end of compasses head 1 on, detachable is equipped with whiteboard pen mounting 7 on the second compasses leg 3. Set up sucking disc 4 on first compasses leg 2, use sucking disc 4 as the location centre of a circle, be equipped with chalk mounting 6 on second compasses leg 3, and detachable is equipped with whiteboard pen mounting 7, chalk can be fixed to chalk mounting 6, whiteboard pen mounting 7 can fix the whiteboard pen, just so can realize being used for the chalk to draw a circle or draw a circle with whiteboard pen, in teaching process, blackboard blank can all use same compasses, the commonality is strong, and flexible subassembly 5 sets up the back, when the compasses do not use, can contract sucking disc 4 to first compasses leg 2 in, when placing like this the sucking disc, be convenient for deposit, simple structure is practical.

Telescopic machanism 5 including telescopic link 51 and spring 52, first compasses leg 2 be equipped with cavity 53 towards the other end of compasses head 1, in cavity 53 is located to telescopic link 51 one end, the other end is connected with sucking disc 4 outside being in cavity 53, telescopic link 51 is served and is equipped with the spring sleeve pole 54 that the diameter is less than telescopic link 51 in being in cavity 53, spring sleeve pole 54 forms spacing step 55 with telescopic link 51, spring 52 cover one end and spacing step 55 conflict on spring sleeve pole 54, the other end is contradicted with cavity 53 inner wall, be equipped with the locating part fixed to telescopic link 51 between telescopic link 51 and the first compasses leg 2. The telescopic rod 51 is inserted into the cavity 53 of the first compass leg 2, the spring sleeve rod 54 and the telescopic rod 51 are integrally formed, the spring 52 is sleeved on the spring sleeve rod 54 and fixed through the limiting piece to realize the extension and contraction of the telescopic rod 51, the sucker 4 is arranged on the telescopic rod 51, and the sucker 4 is arranged in the first compass leg 2 or extends out of the first compass leg through the extension and contraction of the telescopic rod 51.

The limiting member comprises a limiting rod 56, a sliding groove 57 communicated with the cavity 53 is formed in the outer surface of the first compass leg 2, a limiting groove 58 which is perpendicular to and communicated with the sliding groove 57 is formed in the top of the sliding groove 57, the limiting rod 56 is arranged at the connecting position of the telescopic rod 51 and the spring sleeve rod 54, and the other end, connected with the telescopic rod 51, of the limiting rod 56 extends out of the sliding groove 57 and can slide into the limiting groove 58 along the sliding groove 57. The limiting rod 56 is connected with the telescopic rod 51, when the compass is to be used, the limiting rod 56 slides to the bottom of the sliding groove 57 along the sliding groove 57, the limiting rod 56 is blocked when sliding to the bottom of the sliding groove 57 due to extending to the outside of the sliding groove 57, and the sucker 4 is positioned outside the cavity 53 at the moment, when the compass is not used, the limiting rod 56 slides upwards along the sliding groove 57 and slides into the limiting groove 58 when sliding into the limiting groove 58, the limiting rod 56 is placed into the limiting groove 58, at the moment, the telescopic rod 51 compresses the spring 52 to slide upwards, the sucker 4 is retracted into the cavity 53 upwards along with the sucker, the sucker 4 is retracted, and when the compass is used, the limiting rod 56 slides into the sliding groove 57 from the limiting groove 58 and slides downwards.

First compasses leg 2 serve towards sucking disc 4 and be equipped with fixing base 8, fixing base 8 serves towards sucking disc 4 and is equipped with the opening 81 that switches on with cavity 53, is equipped with at least three fixing base opening 82 on this fixing base 8, the surface of fixing base 8 is equipped with fixed slot 83, is equipped with the rubber sleeve 84 fixed to fixing base 8 in the fixed slot 83. Set up fixing base opening 82 on fixing base 8, make fixing base 8 have shrink elasticity, be used for fixed to telescopic link 51, guarantee sucking disc 4 when using, telescopic link 51 is in the stationary state, can not rock, rubber sleeve 84 then plays the fixed action to fixing base 8, sucking disc 4 is when the shrink, take off rubber sleeve 84, rubber sleeve 84 has elasticity, it is very convenient to take off, confirm the back when sucking disc 4 positions, overlap rubber sleeve 84 in fixed slot 83, realize fixing to fixing base 8.

The telescopic rod 51 is provided with two fixed disks 85 at intervals towards one end of the sucker 4, the bottom of the telescopic rod 51 is provided with a sucker mounting seat 41, the sucker mounting seat 41 is provided with a sucker opening 42, and the sucker 4 is provided with a ball fixing seat 43 clamped into the sucker opening 42. The cavity diameter in the fixing base 8 can be greater than the cavity diameter in the first compasses leg 2, consequently, set up fixed disk 85 and be in fixing base 8, also increase sucking disc 4's stability, and sucking disc 4 passes through spheroid fixing base 43 card in sucking disc opening 42, sucking disc 4 and spheroid fixing base 43 are the rubber body, make things convenient for the card of sucking disc spheroid fixing base 43 to go into, and the spheroid makes sucking disc 4 adsorb on the blackboard, when drawing a circle, first compasses leg 2 can be the spheroid fixing base 43 relatively and rotate, make things convenient for the drawing a circle, fixed disk 85 has two, that towards the sucking disc is fixed, and another fixed disk (the fixed disk of top) then the cover can be gliding on the telescopic link, so that above that fixed disk position can be adjusted, it is more nimble to use.

The chalk fixing part 6 comprises a second fixing seat 61 arranged on the second compass leg 3, the second fixing seat 61 is of a cavity structure, at least three second openings 62 are formed in the second fixing seat 61, a second fixing groove 63 is formed in the second fixing seat 61, and a second rubber sleeve 64 is arranged in the second fixing groove 63. The second opening 62 enables the second fixing seat 61 to have contraction elasticity, when a chalk is clamped, the second rubber sleeve 64 leaves the second fixing groove 63, after the chalk is clamped, the second rubber sleeve 64 is fixed in the second fixing groove 63, the second fixing seat 61 is fixed, the chalk is fixed in the second fixing seat 61, and the chalk is convenient to draw circles.

The whiteboard marker fixing member 7 comprises a fixing rod 71 inserted into the second fixing seat 61, a fixing rod seat 72 is arranged at the bottom of the fixing rod 71, a whiteboard marker sleeve 73 is arranged at one side of the fixing rod seat 72, and a bolt 74 for fixing the whiteboard marker is arranged at one side of the whiteboard marker sleeve 73. When fixing the whiteboard pen, insert dead lever 71 in the second fixing base 61, the fixed principle is the same with fixed chalk, and dead lever 71 inserts the back, inserts the whiteboard pen in whiteboard pen sleeve 73, then through bolt 74 fixed can, during the dismantlement, open second rubber 64 cover, with dead lever 71 take out can, dismantle simple and convenient.

The compasses head 1 including the bolt 11, first compasses leg 2 and second compasses leg 3 pass through bolt hole 12 cover on bolt 11, bolt 11 and first compasses leg 2 and second compasses leg 3 between be equipped with the adjustment mechanism 9 of adjusting first compasses

leg

2 and 3 elasticity of second compasses leg. The second compasses leg 3 and the first compasses leg 2 rotate along the bolt 11 through the bolt hole 12, realize the size of the diameter of the circle that the compasses were drawn, and adjustment mechanism can adjust its elasticity, uses more in a flexible way.

The adjusting mechanism 9 comprises a spring 91, the other end of the second compass leg 3 facing the first compass leg 2 is provided with a spring groove 92, the bolt 11 is provided with a limit cover 93, one end of the spring 91 sleeved on the bolt 11 is arranged in the spring groove 92, and the other end of the spring 91 is arranged in the limit cover 93. Spacing

lid

93 and 11 threaded connection of bolt, when needing to be tighter, spacing lid 93 rotates towards 3 directions of second compasses leg, compression spring 91, when needing more pine, spacing lid 93 opposite direction rotates, adjusts simple and conveniently.

The second compass leg 3 is provided with a convex block facing the first compass leg 2, the first compass leg 2 is provided with a groove 94, and an anti-slip pad 95 which is arranged in the groove 94 and sleeved on the convex block is arranged between the first compass leg 2 and the second compass leg 3. The non-slip mat 95 serves as a non-slip function.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited thereto, and any modification that utilizes the inventive concepts will be within the scope of the patent claims.

Claims

1. The utility model provides a teaching aid compasses, is including the first compasses leg and the second compasses leg that the compasses head rotated to be connected, its characterized in that: the other end of the first compass leg towards the head is provided with a sucker, a telescopic mechanism for promoting the sucker to stretch is arranged in the first compass leg, the other end of the second compass leg towards the head is provided with a chalk fixing part, and a whiteboard pen fixing part is detachably arranged on the second compass leg.

2. A teaching aid compass according to claim 1, wherein: telescopic machanism including telescopic link and spring, first compasses leg be equipped with the cavity towards the other end of compasses head, in the cavity was located to telescopic link one end, the other end was connected with the sucking disc outside being in the cavity, the telescopic link was served and is equipped with the spring sleeve pole that the diameter is less than the telescopic link in being in one of cavity, the spring sleeve pole forms spacing step with the telescopic link, the spring sleeve contradict with spacing step in one end on the spring sleeve pole, the other end is contradicted with the cavity inner wall, be equipped with the locating part fixed to the telescopic link between telescopic link and the first compasses leg.

3. A teaching aid compass according to claim 2, wherein: the locating part include a limiting rod, the surface of first compasses leg be equipped with the spout that switches on with the cavity, the spout top is equipped with the spacing groove perpendicular and that switches on with the spout, the limiting rod locate telescopic link and the junction of spring housing pole, the other end that the limiting rod is connected with the telescopic link extend and send out the spout and can slide to the spacing inslot along the spout.

4. A teaching aid compass according to claim 3, wherein: first compasses leg serve towards the sucking disc and be equipped with the fixing base, the fixing base serves towards one of sucking disc and is equipped with the opening that switches on with the cavity, is equipped with at least three fixing base opening on this fixing base, the surface of fixing base is equipped with the fixed slot, is equipped with the rubber sleeve fixed to the fixing base in the fixed slot.

5. A teaching aid compass according to claim 3, wherein: the telescopic link is equipped with two fixed disks towards one of sucking disc serving interval, and the bottom of telescopic link is equipped with the sucking disc mount pad, is equipped with the sucking disc opening on this sucking disc mount pad, is equipped with the card on the sucking disc and goes into the interior spheroid fixing base of sucking disc opening.

6. A teaching aid compass according to claim 1 or 2 or 3 or 4 or 5, wherein: the chalk fixing part comprises a second fixing seat arranged on the second compass leg, the second fixing seat is of a cavity structure, at least three second openings are formed in the second fixing seat, a second fixing groove is formed in the second fixing seat, and a second rubber sleeve is arranged in the second fixing groove.

7. A teaching aid compass according to claim 6, wherein: the whiteboard marker fixing piece comprises a fixing rod inserted into the second fixing seat, a fixing rod seat is arranged at the bottom of the fixing rod, a whiteboard marker sleeve is arranged on one side of the fixing rod seat, and a bolt for fixing the whiteboard marker is arranged on one side of the whiteboard marker sleeve.

8. A teaching aid compass according to claim 1 or 2 or 3 or 4 or 5, wherein: the head of the compass comprises a bolt, the first compass leg and the second compass leg are sleeved on the bolt through bolt holes, and an adjusting mechanism for adjusting the tightness of the first compass leg and the tightness of the second compass leg is arranged between the bolt and the first compass leg and between the bolt and the second compass leg.

9. A teaching aid compass according to claim 8, wherein: the adjusting mechanism comprises a spring, a spring groove is formed in the other end, facing the first compass leg, of the second compass leg, a limiting cover is arranged on the bolt, one end of the spring sleeve is arranged in the spring groove, and the other end of the spring sleeve is arranged in the limiting cover.

10. A teaching aid compass according to claim 9, wherein: the second compass leg is provided with a convex block towards the first compass leg, the first compass leg is provided with a groove, and an anti-slip mat which is arranged in the groove and sleeved on the convex block is arranged between the first compass leg and the second compass leg.