CN209534573U - A kind of compasses easy to use - Google Patents

A kind of compasses easy to use Download PDF

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Publication number
CN209534573U
CN209534573U CN201822103404.XU CN201822103404U CN209534573U CN 209534573 U CN209534573 U CN 209534573U CN 201822103404 U CN201822103404 U CN 201822103404U CN 209534573 U CN209534573 U CN 209534573U
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China
Prior art keywords
gear
hollow tube
sleeve pipe
compasses
swinging kick
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CN201822103404.XU
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Chinese (zh)
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朱可贞
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朱可贞
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Abstract

The utility model relates to drawing tool technical fields, and disclose a kind of compasses easy to use, including hollow tube, casing is equipped in the middle part of hollow tube, telescopic rod is fixedly connected between two the first sliding blocks, the leading flank of telescopic rod is fixedly connected with rack gear, the lower part of rack gear leading flank is engaged with Knucle-gear, first rotating shaft is equipped in the middle part of Knucle-gear, the left end of first rotating shaft is arranged with first bevel gear, the top of first bevel gear is engaged with second bevel gear, pivoted housing is equipped in the middle part of second bevel gear, screw rod is fixedly connected between two the second sliding blocks, the top of screw rod is fixedly connected with spring, the outside screw of screw rod is connected with threaded block, the top of threaded block is set in the bottom end of casing, the inside of connector is rotatably equipped with swinging kick, left side inside link block is offered through slot, it is equipped with through the inside of slot and retouches line Leg.The utility model center of gravity after compasses expansion does not deviate by, more stable, easy to use.

Description

A kind of compasses easy to use
Technical field
The utility model relates to drawing tool technical field, specially a kind of compasses easy to use.
Background technique
It is well known that compasses in mathematics and drawing, are the tools for drawing round or string, it is usually used in construction with ruler and compasses, It is one of a kind of schooling apparatus that student must grasp in the study stage, especially learns the stage in junior middle school, student just contacts Mathematics does figure, and learning Content is related to circle, arc and string, and therefore, the use of compasses is more frequent.
Currently, existing compasses are generally made of two supporting legs and shaft, a supporting leg is used in center location Compasses are supported, another supporting leg is used for the circumference of picture circle, in use, and after two supporting leg expansion, the weight of compasses The heart can deviate, in the supporting leg meeting run-off the straight of center location support compasses, when drawing, and during rotating shaft, Due to the deviation of gravity center of compasses, offset is easy to happen in the supporting leg of center location support compasses and is detached from the center of circle, is mapped Irregular situation, and in order to avoid the generation of this case, user need during rotating shaft, firmly will it need It is pressed downward in the supporting leg of center location support compasses, prevents it from separating with the center of circle, this results in existing compasses to be not convenient to use The problem of occur.
Utility model content
(1) the technical issues of solving
In order to solve the above problem of the prior art, the utility model provides a kind of compasses easy to use, was mapping The center of gravity of Cheng Zhong, compasses do not deviate by, and can remain vertical state in the supporting leg of center location support compasses, without departing from The center of circle, and do not need to rotate compasses manually, it is only necessary to being downwardly applied to pressure can be realized picture circle, more convenient to use.
(2) technical solution
In order to achieve the above object, the main technical schemes of the utility model use include:
A kind of compasses easy to use, including hollow tube are equipped with casing, described sleeve pipe inner wall in the middle part of the hollow tube The top of two sides offers first sliding groove, and the inner cavity of the first sliding groove is connected with the first sliding block, and two described first Telescopic rod is fixedly connected between sliding block;
The leading flank of the telescopic rod is fixedly connected with rack gear, and the lower part of the rack gear leading flank is engaged with Knucle-gear, institute It states and is equipped with first rotating shaft in the middle part of Knucle-gear, the right end of the first rotating shaft is rotatably mounted on the right side of the hollow tube On inner wall, the left end of the first rotating shaft extends to the outside of the hollow tube, and the left end of the first rotating shaft is arranged with One bevel gear, the top of the first bevel gear are engaged with second bevel gear, are equipped with pivoted housing in the middle part of the second bevel gear, The bottom end of the pivoted housing is rotatably threaded through the top of the hollow tube, and the pivoted housing is rotatably set in described sleeve pipe Outside;
The lower part of described sleeve pipe two sides inner wall offers second sliding slot, and the inner cavity of the second sliding slot is connected with Two sliding blocks are fixedly connected with screw rod between two second sliding blocks;
The top of the screw rod is fixedly connected with spring, and the fixed company in the top of the spring and the bottom of the telescopic rod It connects;
The outside screw of the screw rod is connected with threaded block, and the top of the threaded block is set in the bottom end of described sleeve pipe, And the top of the threaded block inner wall is threadedly coupled with the bottom end of described sleeve pipe;
The side of the pivoted housing is fixedly connected with support plate, and the support plate is fixedly connected with far from one end of the pivoted housing Connector;
The inside of connector described in the connector is rotatably equipped with swinging kick, and the bottom of the swinging kick is rotatably pacified Equipped with link block, the left side inside the link block is offered through slot, and the inside through slot, which is equipped with, retouches line leg, described The left side for retouching line leg is uniformly provided with several locating slots from top to bottom, and the inside of one of them locating slot is plugged with positioning Block.
Preferably, the left end of the locating piece extends to the outside of the link block, and the locating piece and the connection It is threadedly coupled between block.
Preferably, the size of the hollow tube inner cavity top be greater than bottom size, and the hollow inside pipe wall bottom with It is fixedly connected between described sleeve pipe.
Preferably, the front side of described sleeve pipe has opening, and the back side of the Knucle-gear through the opening and extends to The inner cavity of described sleeve pipe.
Preferably, the connector is made of two pieces of arc panels and one piece of vertical plate, and two pieces of arc panels are in front and back Directional spreding has gap between two pieces of arc panels, is respectively and fixedly installed on the right side of two pieces of arc panels described perpendicular The front and rear sides of straight panel left side, and the right side of the vertical plate is fixedly connected with the support plate.
Preferably, the top of the swinging kick is inserted between two pieces of arc panels, and the top in swinging kick front and rear sides face End is respectively hinged at the center point in two pieces of arc panel opposite side faces.
Preferably, the right inward recess of the link block is fluted, and the front and rear sides inner wall of the groove is respectively articulated with In the bottom end in swinging kick front and rear sides face, and the bottom of the inner left wall of the groove and the swinging kick is semicircle.
(3) beneficial effect
The utility model provides a kind of compasses easy to use.Have it is following the utility model has the advantages that
When work, the conical lower portion of screw rod is placed on center location, and keep screw rod vertical state, swings swinging kick and adjust pendulum Then the expansion amplitude of leg is rotatablely connected block, link block drive retouches the rotation of line leg, will retouch line leg and turn to vertical state, at this point, It rotates backward locating piece and is separated by it with corresponding position locating slot, and pull retouch line leg up and down, then rotate forward locating piece and allow It is inserted into locating slot, and the line leg of retouching after can adjusting to position highly fix, alternatively, rotating backward threaded block by it It is separated with casing, then by stretching motion of the screw rod in casing, then rotates forward screw rod and connect by it with casing threads, To carry out height fixed for line leg of retouching after can adjusting to position, and in turn, after swinging kick expansion, allows bottom and the spiral shell for retouching line leg The bottom of bar is in sustained height, and then presses telescopic rod downwards, and telescopic rod band carry-over bar moves downward, rack drives circle Gear rotation, Knucle-gear drive first bevel gear to rotate by first rotating shaft, and first bevel gear passes through second bevel gear band turn Set rotation, pivoted housing drive swinging kick to move in a circle by support plate and connector sleeve, achievable picture circle, and during drawing circle, spiral shell Bar is moderate in a vertical state, and for the center of gravity of compasses there is no deviateing, user applies pressure along the axle center of screw rod upwards, Stability is more preferable, easily facilitates use, especially, when telescopic rod moves downward, meeting compressed spring, and drawing a circle circle Afterwards, telescopic rod is discharged, compressed spring can be moved upwards in recovery process by telescopic rod band carry-over bar, at this point, knuckle-tooth Wheel can rotate backward, and then retouch line leg and can rotate backward a circle again, allow picture to justify clearer, do not need to draw circle repeatedly, more just Just it uses.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1;
Fig. 2 is enlarged drawing at A in Fig. 1;
Fig. 3 is the structural schematic diagram of the utility model connector;
Fig. 4 is the structural schematic diagram of the utility model embodiment 2;
Fig. 5 is enlarged drawing at B in Fig. 4;
Fig. 6 is enlarged drawing at C in Fig. 4;
Fig. 7 be in Fig. 6 Y-Y to cross-sectional view.
[description of symbols]
In figure: 1: hollow tube;2: casing;3: first sliding groove;4: the first sliding blocks;5: telescopic rod;6: rack gear;7: Knucle-gear; 8: first rotating shaft;9: first bevel gear;10: second bevel gear;11: pivoted housing;12: second sliding slot;13: the second sliding blocks;14: spiral shell Bar;15: spring;16: threaded block;17: support plate;18: connector;181: arc panel;182: vertical plate;19: swinging kick;20: even Connect block;21: running through slot;22: retouching line leg;23: locating slot;24: locating piece;25: groove;26: teeth;27: notch;28: the second Shaft;29: third shaft;30: first gear;31: second gear;32: the first runners;33: belt;34: the second runners;35: 4th shaft.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-3, in the embodiments of the present invention 1: a kind of compasses easy to use, including hollow tube 1, it is hollow The size of 1 inner cavity top of pipe is greater than the size of bottom, and allowing has enough space pivoted housings 11, hollow tube 1 at the top of hollow tube 1 Be fixedly connected between inner wall bottom and casing 2, can by being fixedly connected between hollow tube 1 and casing 2, effectively to casing 2 into Row is fixed, and prevents casing 2 from rotating, and the middle part of hollow tube 1 is equipped with casing 2, and the front side of casing 2 has opening, and knuckle-tooth The back side of wheel 7 can mention for Knucle-gear 7 with engaging for rack gear 6 through the inner cavity for being open and extending to casing 2, the opening of casing 2 For space, the top of 2 inner wall two sides of casing offers first sliding groove 3, and the inner cavity of first sliding groove 3 is connected with the first sliding block 4, telescopic rod 5 is fixedly connected between two the first sliding blocks 4, and telescopic rod 5 can carry out stretching motion, and then band in casing 2 Carry-over bar 6 moves up and down, and reaches the function of driving Knucle-gear 7 to rotate using rack gear 6;
The leading flank of telescopic rod 5 is fixedly connected with rack gear 6, and the lower part of 6 leading flank of rack gear is engaged with Knucle-gear 7, when rack gear 6 When up and down motion, Knucle-gear 7 can be driven to rotate, the middle part of Knucle-gear 7 is equipped with first rotating shaft 8, and the right end of first rotating shaft 8 can On the right side inner wall for being mounted on hollow tube 1 of rotation, the left end of first rotating shaft 8 extends to the outside of hollow tube 1, and first rotating shaft 8 left end is arranged with first bevel gear 9, when Knucle-gear 7 rotates, first bevel gear 9 can be driven to rotate by first rotating shaft 8, The top of first bevel gear 9 is engaged with second bevel gear 10, and the middle part of second bevel gear 10 is equipped with pivoted housing 11, when the first cone tooth When 9 rotation of wheel, the rotation of second bevel gear 10 will drive, and second bevel gear 10 will drive the rotation of pivoted housing 11, the bottom end of pivoted housing 11 Rotatably it is threaded through the top of hollow tube 1, and pivoted housing 11 is rotatably set in the outside of casing 2, pivoted housing 11 is by the bottom of by End is threaded through the top of hollow tube 1, and hollow tube 1 is effectively supported pivoted housing 11 in the case where not influencing the rotation of pivoted housing 11 It is fixed;
The lower part of 2 two sides inner wall of casing offers second sliding slot 12, and the inner cavity of second sliding slot 12 is connected with second Sliding block 13 is fixedly connected with screw rod 14 between two the second sliding blocks 13, and the bottom of screw rod 14 is taper, convenient for the positioning in the center of circle, By sliding block and sliding slot the inner cavity position-limiting action radial along casing 2, so that the cooperation of sliding slot and sliding block, can allow screw rod 14 can only It enough moves up and down, and can not be rotated, and then ensure the threaded hole when threaded block 16 is connect with 2 bottom thread of casing Can the position effectively to screw rod 14 be fixed;
The top of screw rod 14 is fixedly connected with spring 15, and the top of spring 15 is fixedly connected with the bottom of telescopic rod 5, bullet Spring 15 can provide corresponding elastic resistance with the up and down motion of screw rod 14 for telescopic rod 5, after 14 position of screw rod is fixed, downwards Telescopic rod 5 after movement can automatically reset in 15 recovery process of spring;
The outside screw of screw rod 14 is connected with threaded block 16, and the top of threaded block 16 is set in the bottom end of casing 2, and screw thread The top of 16 inner wall of block is threadedly coupled with the bottom end of casing 2, when threaded block 16 is connect with the bottom thread of casing 2, threaded block 16 can be fixed the position of screw rod 14, and separate after threaded block 16 rotates backward with 2 bottom of casing, and and casing When 2 bottoms have interval, screw rod 14 can be moved up and down, and move up certain distance and then just in screw rod 14 To rotation threaded block 16 and it is allowed to connect with 2 bottom thread of casing, the screw thread after can adjusting to position carries out position and fixes;
The side of pivoted housing 11 is fixedly connected with support plate 17, and support plate 17 is fixedly connected with connection far from one end of pivoted housing 11 First 18, connector 18 is made of two pieces of arc panels 181 and one piece of vertical plate 182, and two pieces of arc panels 181 are in front-rear direction point Cloth has gap between two pieces of arc panels 181, and the right side of two pieces of arc panels 181 is respectively and fixedly installed to 182 left side of vertical plate Front and rear sides, and the right side of vertical plate 182 is fixedly connected with support plate 17, and the gap between two house type plates can be used for installing Swinging kick 19;
The inside of connector 18 is rotatably equipped with swinging kick 19, and the top of swinging kick 19 is inserted between two pieces of arc panels 181, And the top in 19 front and rear sides face of swinging kick is respectively hinged at the center point in two pieces of arc panels, 181 opposite side face, swinging kick 19 can Using its junction with two blocks of house type plates as axis swing, and then the adjustable size for drawing circle, the bottom of swinging kick 19 can be rotated Link block 20 is installed, the right inward recess fluted 25 of link block 20, the front and rear sides inner wall of groove 25 is respectively articulated with In the bottom end in 19 front and rear sides face of swinging kick, and the bottom of the inner left wall of groove 25 and swinging kick 19 is semicircle, link block Left side inside 20 is offered through slot 21, is equipped with through the inside of slot 21 and is retouched line leg 22, can be with by being rotatablely connected block 20 It adjusts and retouches the direction of line leg 22, when swinging kick 19 swings certain amplitude and then rotates backward the link block 20 of same magnitude, connection The rotation of line leg 22 is retouched in the drive of block 20, and can be allowed and be retouched line leg 22 and remain vertical state, and line leg 22 is retouched in significantly more efficient setting-out Left side be uniformly provided with several locating slots 23 from top to bottom, the inside of one of locating slot 23 is plugged with locating piece 24, The left end of locating piece 24 extends to the outside of link block 20, and is threadedly coupled between locating piece 24 and link block 20, when swinging kick 19 It swings certain amplitude and then will retouch after line leg 22 swings to vertical state, due to that can be promoted and retouch line in 19 swing process of swinging kick It is separated with corresponding position locating slot 23 at this point, rotating backward locating piece 24 again, is then pulled downward on by the certain height of leg 22 Line leg 22 is retouched, its bottom and the bottom of screw rod 14 is allowed to keep the same horizontal position, then rotates forward the insertion of locating piece 24 and corresponds to In position locating slot 23, the line leg 22 retouched after height adjustment can effectively be fixed, especially at this moment, screw rod 14 is in vertical shape State, center of gravity is more stable, is drawing bowlder, has evaded the problem that deviation of gravity center causes stability poor after traditional compasses are unfolded.
When work, the conical lower portion of screw rod 14 is placed on center location, and keeps 14 vertical state of screw rod, swings swinging kick 19 The expansion amplitude of swinging kick 19 is adjusted, block 20 is then rotatablely connected, the drive of link block 20 retouches the rotation of line leg 22, will retouch line leg 22 and rotate It to vertical state, allows it to separate with corresponding position locating slot 23 at this point, rotating backward locating piece 24, and pulls retouch line leg up and down 22, then rotate forward locating piece 24 and it is allowed to be inserted into locating slot 23, the line leg 22 of retouching after can adjusting to position carries out height Degree is fixed, and allows it to separate with casing 2 alternatively, rotating backward threaded block 16, then passes through flexible fortune of the screw rod 14 in casing 2 It is dynamic, then rotate forward screw rod 14 and it is allowed to be threadedly coupled with casing 2, the line leg 22 of retouching after can also adjusting to position carries out height It is fixed, in turn, after the expansion of swinging kick 19, the bottom for retouching line leg 22 and the bottom of screw rod 14 is allowed to be in sustained height, and then Telescopic rod 5 is pressed downwards, telescopic rod 5 is moved downward with carry-over bar 6, and rack gear 6 drives Knucle-gear 7 to rotate, and Knucle-gear 7 passes through first Shaft 8 drives first bevel gear 9 to rotate, and first bevel gear 9 drives pivoted housing 11 to rotate by second bevel gear 10, and pivoted housing 11 passes through Support plate 17 and connector sleeve drive swinging kick 19 to move in a circle, achievable picture circle, especially, when telescopic rod 5 moves downward, meeting Compressed spring 15, and after having drawn a circle circle, telescopic rod 5 is discharged, compressed spring 15 can be by stretching in recovery process Contracting bar 5 is moved upwards with carry-over bar 6, at this point, Knucle-gear 7 can rotate backward, and then retouch line leg 22 and can rotate backward a circle, is allowed It is clearer to draw circle, does not need to draw circle repeatedly, it is more convenient to use.
As shown in figs. 4-7, in example 2, several teeth 26 are evenly arranged with positioned at the bottom of front side arc panel 181, The top of 19 leading flank of swinging kick opens up jagged 27, and the top and lower part at the 27 inner wall back side of notch are rotatably equipped with the respectively The outside of two shafts 28 and third shaft 29, the second shaft 28 and third shaft 29 is arranged with first gear 30 and the second tooth respectively Wheel 31, the top of first gear 30 is engaged with teeth 26, and the bottom of first gear 30 is engaged with the top of second gear 31, when When swinging kick 19 is swung, teeth 26 will drive the rotation of first gear 30, and the second gear 31 that first gear 30 will drive rotates, the The outer sheath of three shafts 29 is equipped with the first runner 32, and the first runner 32 is located at the rear of second gear 31, the first runner 32 Outer sheath is equipped with belt 33, and the bottom driving of 33 inner cavity of belt is connected with the second runner 34, and the middle part of the second runner 35 is equipped with 4th shaft 35, and the size of the second runner 34 is identical as the size of the first runner 32, when second gear 31 rotates, the second tooth Wheel 31 can drive the rotation of the first runner 32 by third shaft 29, and the first runner 32 drives the by belt 33 and the second runner 34 The rotation of four shafts 35, and when the rotation of the 4th shaft 35, it will drive the rotation of link block 20, link block 20, which will drive, retouches 22 turns of line leg It is dynamic, and at this point, retouching the rotation direction of line leg 22 and the swaying direction of swinging kick 19 on the contrary, therefore, in 19 swing process of swinging kick, retouching Line leg 22 can automatically keep vertical state always, easily facilitate use, and the middle part of the second runner 34 is equipped with the 4th shaft 35, the Swinging kick 19 is run through in the rear and front end of four shafts 35, and the rear and front end of the 4th shaft 35 respectively with 25 front and rear sides inner wall of groove It is fixedly connected, remaining feature is same as Example 1.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence " including a reference structure ", is not arranged Except there is also other identical elements in the process, method, article or apparatus that includes the element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (7)

1. a kind of compasses easy to use, including hollow tube (1), it is characterised in that: be equipped with set in the middle part of the hollow tube (1) It manages (2), the top of described sleeve pipe (2) inner wall two sides offers first sliding groove (3), the inner cavity activity of the first sliding groove (3) It is connected with the first sliding block (4), is fixedly connected with telescopic rod (5) between two first sliding blocks (4);
The leading flank of the telescopic rod (5) is fixedly connected with rack gear (6), and the lower part of rack gear (6) leading flank is engaged with knuckle-tooth It takes turns (7), is equipped with first rotating shaft (8) in the middle part of the Knucle-gear (7), the right end of the first rotating shaft (8) is rotatably installed On the right side inner wall of the hollow tube (1), the left end of the first rotating shaft (8) extends to the outside of the hollow tube (1), and The left end of the first rotating shaft (8) is arranged with first bevel gear (9), and the top of the first bevel gear (9) is engaged with the second cone Gear (10) is equipped with pivoted housing (11) in the middle part of the second bevel gear (10), and the bottom end of the pivoted housing (11) is rotatably worn It is located at the top of the hollow tube (1), and the pivoted housing (11) is rotatably set in the outside of described sleeve pipe (2);
The lower part of described sleeve pipe (2) two sides inner wall offers second sliding slot (12), the inner cavity activity of the second sliding slot (12) It is connected with the second sliding block (13), is fixedly connected with screw rod (14) between two second sliding blocks (13);
The top of the screw rod (14) is fixedly connected with spring (15), and the top of the spring (15) and the telescopic rod (5) Bottom be fixedly connected;
The outside screw of the screw rod (14) is connected with threaded block (16), and the top of the threaded block (16) is set in described sleeve pipe (2) bottom end, and the top of the threaded block (16) inner wall is threadedly coupled with the bottom end of described sleeve pipe (2);
The side of the pivoted housing (11) is fixedly connected with support plate (17), and the one of the support plate (17) separate the pivoted housing (11) End is fixedly connected with connector (18);
The inside of the connector (18) connector (18) is rotatably equipped with swinging kick (19), the bottom of the swinging kick (19) Portion is rotatably equipped with link block (20), and the internal left side of the link block (20) is offered through slot (21), described to run through The inside of slot (21), which is equipped with, retouches line leg (22), and the left side for retouching line leg (22) is uniformly provided with several positioning from top to bottom The inside of slot (23), one of them locating slot (23) is plugged with locating piece (24).
2. a kind of compasses easy to use according to claim 1, it is characterised in that: prolong the left end of the locating piece (24) The outside of the link block (20) is extended to, and is threadedly coupled between the locating piece (24) and the link block (20).
3. a kind of compasses easy to use according to claim 1, it is characterised in that: hollow tube (1) inner cavity top Size be greater than the size of bottom, and be fixedly connected between the hollow tube (1) inner wall bottom and described sleeve pipe (2).
4. a kind of compasses easy to use according to claim 1, it is characterised in that: the front side of described sleeve pipe (2) has Opening, and the back side of the Knucle-gear (7) is through the inner cavity being open and extend to described sleeve pipe (2).
5. a kind of compasses easy to use according to claim 1, it is characterised in that: the connector (18) is by two pieces of arcs Shape plate (181) and one piece of vertical plate (182) composition, two pieces of arc panels (181) are distributed in front-rear direction, two pieces of arcs There is gap between shape plate (181), be respectively and fixedly installed to the vertical plate (182) on the right side of two pieces of arc panels (181) The front and rear sides of left side, and the right side of the vertical plate (182) is fixedly connected with the support plate (17).
6. a kind of compasses easy to use according to claim 5, it is characterised in that: the top of the swinging kick (19) is inserted into Between two pieces of arc panels (181), and the top in the swinging kick (19) front and rear sides face is respectively hinged at two pieces of arcs The center point in plate (181) opposite side face.
7. a kind of compasses easy to use according to claim 1, it is characterised in that: the right side of the link block (20) to Sunken inside is fluted (25), and the front and rear sides inner wall of the groove (25) is respectively hinged at the swinging kick (19) front and rear sides face Bottom end, and the bottom of the inner left wall of the groove (25) and the swinging kick (19) is semicircle.
CN201822103404.XU 2018-12-14 2018-12-14 A kind of compasses easy to use Active CN209534573U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822103404.XU CN209534573U (en) 2018-12-14 2018-12-14 A kind of compasses easy to use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822103404.XU CN209534573U (en) 2018-12-14 2018-12-14 A kind of compasses easy to use

Publications (1)

Publication Number Publication Date
CN209534573U true CN209534573U (en) 2019-10-25

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Application Number Title Priority Date Filing Date
CN201822103404.XU Active CN209534573U (en) 2018-12-14 2018-12-14 A kind of compasses easy to use

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