CN107901676B - Multifunctional compasses - Google Patents

Multifunctional compasses Download PDF

Info

Publication number
CN107901676B
CN107901676B CN201711138835.3A CN201711138835A CN107901676B CN 107901676 B CN107901676 B CN 107901676B CN 201711138835 A CN201711138835 A CN 201711138835A CN 107901676 B CN107901676 B CN 107901676B
Authority
CN
China
Prior art keywords
gear
groove
supporting leg
reading
fixing mechanism
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.)
Active
Application number
CN201711138835.3A
Other languages
Chinese (zh)
Other versions
CN107901676A (en
Inventor
周默
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201711138835.3A priority Critical patent/CN107901676B/en
Publication of CN107901676A publication Critical patent/CN107901676A/en
Application granted granted Critical
Publication of CN107901676B publication Critical patent/CN107901676B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00Circular curve-drawing or like instruments
    • B43L9/02Compasses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00Circular curve-drawing or like instruments
    • B43L9/16Features common to compasses, dividers, and callipers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00Circular curve-drawing or like instruments
    • B43L9/16Features common to compasses, dividers, and callipers
    • B43L9/22Leg-angle adjusting-means separate from pivots

Landscapes

  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)

Abstract

The invention discloses a multifunctional compass, which comprises a base body, a first groove, a driving mechanism, a first gear, a second gear, a first fixing mechanism, a second fixing mechanism, a reading mechanism, a first supporting leg, a second supporting leg, a positioning needle, a handle, a second groove, a rotating shaft and a rotating disc, the lower end of the seat body is provided with a first groove, a first gear and a second gear are arranged in the first groove, the first gear is meshed with the second gear, the lower ends of the first gear and the second gear are respectively provided with a first supporting leg and a second supporting leg, the lower end of the first supporting leg is provided with a fixing mechanism capable of fixing a drawing pen or a pen core, the lower end of the second supporting leg is provided with a second groove and a rotating shaft penetrating through the second groove, compared with the prior art, the positioning pin angle adjusting device has the advantages of being convenient to use, good in reliability, capable of improving applicability and convenient to adjust the angle of the positioning pin.

Description

Multifunctional compasses
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of student supplies, in particular to the technical field of multifunctional compasses.
[ background of the invention ]
Compasses are tools for drawing circles and circular arcs, and are one of indispensable tools in our office work and study. It is formed by connecting two parts with a hinge, and the connecting part between the two parts can be adjusted. In life, when a common compass is used for drawing, a ruler is needed to measure the radius, under the condition that no ruler is used, the compass has great limitation on drawing standard graphs, and in more cases, the compass cannot draw graphs.
Meanwhile, the connecting part of the compasses is the hinge, the hinge is easy to loosen after the compasses are used for a long time, the problem of dislocation can be frequently caused when the graphics are drawn, and when the included angle of the two compasses legs is large, the positioning needle is not easy to fix, and the positioning needle is easy to slip when drawing, so that inconvenience is brought to drawing workers.
The existing compasses can only be used together with a drawing pen or a pen core, so that the applicability is low.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a multifunctional compass which is convenient to use, good in reliability, high in applicability and convenient for angle adjustment of a positioning needle.
In order to achieve the purpose, the invention provides a multifunctional compass, which comprises a base body, a first groove, a driving mechanism, a first gear, a second gear, a first fixing mechanism, a second fixing mechanism, a reading mechanism, a first supporting leg, a second supporting leg, a positioning needle, a handle, a second groove, a rotating shaft and a rotating disc, wherein the lower end of the base body is provided with the first groove, the first gear and the second gear are arranged in the first groove, the first gear is in meshed connection with the second gear, the lower ends of the first gear and the second gear are respectively provided with a first supporting leg and a second supporting leg, the lower end of the first supporting leg is provided with the first fixing mechanism capable of fixing a drawing pen or a pen refill, the lower end of the second supporting leg is provided with the second groove and the rotating shaft penetrating through the second groove, the lower end of the rotating shaft in the second groove is provided with the positioning needle, one end of the rotating shaft is provided with the rotating disc, the second supporting leg is provided with a second fixing mechanism for fixing the rotary table, the rear end of the first groove is internally provided with a driving mechanism for driving the second gear to rotate, the side surface of the seat body is provided with a reading mechanism connected with the driving mechanism, the upper end of the seat body is provided with a handle, the second fixing mechanism comprises a support, a sliding body, a cap body, a spring and a blocking step, the second supporting leg is provided with the support, the sliding body penetrates through the support, the upper end of the sliding body is provided with the cap body, the sliding body is provided with the blocking step below the support, the sliding body between the blocking step and the support is sleeved with the spring, the circumferential surface of the rotary table is provided with third grooves which are uniformly distributed and matched with the lower end of the sliding body, the reading mechanism comprises a third gear, a fourth gear, a transparent cover body, a first scale area, a second scale area, a first reading pointer and a second reading pointer, the side face of the seat body is provided with a third gear and a fourth gear, the third gear is connected with a driving mechanism, the fourth gear is connected with the third gear in a meshed manner, the outer sides of the third gear and the fourth gear are respectively provided with a first reading pointer and a second reading pointer, the side face of the seat body is provided with a transparent cover body for covering the third gear and the fourth gear, the transparent cover body is provided with a first scale area and a second scale area, the first scale area and the second scale area are respectively matched with the first reading pointer and the second reading pointer, the first fixing mechanism comprises a first sleeve body, a plurality of notches, a plurality of clamping arms, a plurality of clamping bodies and a second sleeve body, the lower end of the first supporting leg is provided with a first sleeve body, the lower end of the first sleeve body is provided with notches which are uniformly distributed, the notches are respectively provided with the clamping arms which are rotatably connected, and the lower ends of the clamping arms are respectively provided with the clamping bodies which are rotatably connected in the first sleeve body, the first sleeve body is sleeved with a second sleeve body in threaded connection, and the upper end of the clamping arm is lapped on the second sleeve body.
Preferably, the driving mechanism includes a mounting seat, a worm body, a fifth gear and an adjusting cap, the mounting seat is disposed in the rear end of the first groove, the mounting seat is provided with the rotatable worm body, the front end of the worm body is meshed with the second gear, the worm body is disposed in the first groove and is meshed with the fifth gear, the seat body is provided with an opening for exposing the fifth gear, the rear end of the worm body is provided with the adjusting cap, and the gear ratio of the third gear to the fifth gear is: 1:1.
Preferably, the gear ratio of the third gear to the fourth gear is: 1:10.
Preferably, the number of the notches is four.
Preferably, the rear side face of the second supporting leg is provided with a containing groove, a storage box with the lower end rotatably connected with the lower end of the containing groove is arranged in the containing groove, the front portion of the upper end of the storage box is provided with a magnet, and the rear portion of the upper end of the storage box is provided with a handle.
The invention has the beneficial effects that: according to the compass drawing tool, the first gear and the second gear are arranged in the first groove, the first gear is in meshed connection with the second gear, the lower ends of the first gear and the second gear are respectively provided with the first supporting leg and the second supporting leg, the rear end of the first groove is internally provided with the driving mechanism for driving the second gear to rotate, the side face of the base body is provided with the reading mechanism connected with the driving mechanism, and the problems that the radius needs to be measured by using a ruler and the dislocation often occurs when the traditional compass is used for drawing can be solved; the lower end of the second support leg is provided with a second groove and a rotating shaft penetrating through the second groove, the lower end of the rotating shaft in the second groove is provided with a positioning needle, one end of the rotating shaft is provided with a turntable, the second support leg is provided with a second fixing mechanism for fixing the turntable, the positioning needle can be rotated into the second groove, the compasses are convenient to fold and unfold, the phenomenon of hurting people is avoided, multi-angle fixing can be realized, and the phenomenon that the positioning needle slips when the included angle between the two compasses legs is larger is avoided; the lower end of the first supporting leg is provided with a first fixing mechanism capable of fixing the drawing pen and the pen core, so that the applicability is improved; compared with the prior art, the positioning pin angle adjusting device has the advantages of being convenient to use, good in reliability, capable of improving applicability and convenient to adjust the angle of the positioning pin.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a multi-function compass of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a schematic structural view of a first securing mechanism;
fig. 4 is an enlarged view of B in fig. 1.
In the figure: 1-seat body, 2-first groove, 3-driving mechanism, 4-first gear, 5-second gear, 6-first fixing mechanism, 7-second fixing mechanism, 8-reading mechanism, 9-first supporting leg, 10-second supporting leg, 11-positioning needle, 12-opening, 13-handle, 14-second groove, 15-rotating shaft, 16-rotating disc, 17-accommodating groove, 18-storage box, 19-magnet, 110-handle, 31-mounting seat, 32-worm body, 33-fifth gear, 34-adjusting cap, 61-first sleeve body, 62-notch, 63-clamping arm, 64-clamping body, 65-second sleeve body, 71-support, 72-sliding body, 73-a cap body, 74-a spring, 75-a blocking step, 76-a third groove, 81-a third gear, 82-a fourth gear, 83-a transparent cover body, 84-a first scale area, 85-a second scale area, 86-a first reading pointer and 87-a second reading pointer.
[ detailed description ] embodiments
Referring to fig. 1, 2, 3 and 4, the multifunctional compass of the present invention comprises a base 1, a first groove 2, a driving mechanism 3, a first gear 4, a second gear 5, a first fixing mechanism 6, a second fixing mechanism 7, a reading mechanism 8, a first leg 9, a second leg 10, a positioning pin 11, a handle 13, a second groove 14, a rotating shaft 15 and a rotating disc 16, wherein the base 1 is provided with the first groove 2 at a lower end thereof, the first groove 2 is provided with the first gear 4 and the second gear 5 therein, the first gear 4 is engaged with the second gear 5, the first gear 4 and the second gear 5 are respectively provided with the first leg 9 and the second leg 10 at lower ends thereof, the first leg 9 is provided with the first fixing mechanism 6 capable of fixing a drawing pen or a pen refill at a lower end thereof, the second leg 10 is provided with the second groove 14 and the rotating shaft 15 penetrating through the second groove 14 at a lower end thereof, a positioning needle 11 is arranged at the lower end of a rotating shaft 15 in the second groove 14, a rotating disc 16 is arranged at one end of the rotating shaft 15, a second fixing mechanism 7 for fixing the rotating disc 16 is arranged on the second supporting leg 10, a driving mechanism 3 for driving the second gear 5 to rotate is arranged in the rear end of the first groove 2, a reading mechanism 8 connected with the driving mechanism 3 is arranged on the side surface of the seat body 1, a handle 13 is arranged at the upper end of the seat body 1, the second fixing mechanism 7 comprises a support 71, a sliding body 72, a cap body 73, a spring 74 and a blocking step 75, the support 71 is arranged on the second supporting leg 10, the sliding body 72 penetrates through the support 71, the cap body 73 is arranged at the upper end of the sliding body 72, the blocking step 75 is arranged below the support 71 of the sliding body 72, the spring 74 is sleeved on the sliding body 72 between the blocking step 75 and the support 71, third grooves 76 which are uniformly distributed and are matched with the lower end of the sliding body 72 are arranged on, the reading mechanism 8 comprises a third gear 81, a fourth gear 82, a transparent cover 83, a first scale area 84, a second scale area 85, a first reading pointer 86 and a second reading pointer 87, the side surface of the base 1 is provided with the third gear 81 and the fourth gear 82, the third gear 81 is connected with the driving mechanism 3, the fourth gear 82 is meshed with the third gear 81, the outer sides of the third gear 81 and the fourth gear 82 are respectively provided with the first reading pointer 86 and the second reading pointer 87, the side surface of the base 1 is provided with the transparent cover 83 covering the third gear 81 and the fourth gear 82, the transparent cover 83 is provided with the first scale area 84 and the second scale area 85, the first scale area 84 and the second scale area 85 are respectively matched with the first reading pointer 86 and the second reading pointer 87, the first fixing mechanism 6 comprises a first sleeve body 61, a second sleeve body 85, a second reading pointer 86 and a second reading pointer 87, A plurality of gaps 62, a plurality of clamping arms 63, a plurality of clamping bodies 64 and a second sleeve body 65, the lower end of the first leg 9 is provided with a first sleeve body 61, the lower end of the first sleeve body 61 is provided with uniformly distributed gaps 62, the gaps 62 are internally provided with clamping arms 63 capable of being rotatably connected, the lower end of each clamping arm 63 is provided with a clamping body 64 capable of being rotatably connected in the first sleeve body 61, the first sleeve body 61 is sleeved with a second sleeve body 65 capable of being connected through threads, the upper end of each clamping arm 63 is lapped on the second sleeve body 65, the driving mechanism 3 comprises an installation seat 31, a worm body 32, a fifth gear 33 and an adjusting cap 34, the installation seat 31 is arranged in the rear end of the first groove 2, the rotatable worm body 32 is arranged on the installation seat 31, the front end of the worm body 32 is meshed with the second gear 5, the worm body 32 is provided with the fifth gear 33 meshed with the third gear 81 in the first groove 2, an opening 12 through which the fifth gear 33 can be exposed is formed in the base body 1, an adjusting cap 34 is arranged at the rear end of the worm body 32, and the gear ratio of the third gear 81 to the fifth gear 33 is: 1:1, the gear ratio of the third gear 81 to the fourth gear 82 is: 1:10, the number of the notches 62 is four, the rear side surface of the second support leg 10 is provided with an accommodating groove 17, a storage box 18 with the lower end rotatably connected with the lower end of the accommodating groove 17 is arranged in the accommodating groove 17, the front part of the upper end of the storage box 18 is provided with a magnet 19, and the rear part of the upper end of the storage box 18 is provided with a handle 110.
The working process of the invention is as follows:
during the working process of the multifunctional compass, the adjusting cap 34 is rotated counterclockwise, the adjusting cap 34 drives the worm body 32 to rotate, the worm body 32 drives the fifth gear 33 and the second gear 5 to rotate, the second gear 5 drives the first gear 4 to rotate, the first gear 4 and the second gear 5 respectively drive the first supporting leg 9 and the second supporting leg 10 to move in opposite directions, the fifth gear 33 drives the third gear 81 to rotate, the third gear 81 drives the fourth gear 82 to rotate, the third gear 81 and the fourth gear 82 drive the first reading pointer 86 and the second reading pointer 87 to rotate respectively, the diameter of a circle to be drawn is determined by reading the scale marks pointed by the first scale area 84 and the second scale area 85 through the first reading pointer 86 and the second reading pointer 87 respectively, the units of the first scale area 84 and the second scale area 85 are respectively millimeter and centimeter, and the first scale area 84 and the second scale area 85 are respectively scales from one to ten which are uniformly distributed in a circumferential shape.
When the angle of the positioning pin 11 needs to be adjusted, the cap body 73 is pulled upwards to drive the sliding body 72 to move upwards until the lower end of the sliding body 72 is completely removed from the third groove 76, then the positioning pin 11 is rotated to adjust the angle, after the adjustment is completed, the cap body 73 is loosened, the blocking step 75 drives the sliding body 72 to move downwards under the action of the spring 74, and the lower end of the sliding body 72 is inserted into the corresponding third groove 76.
When the pilot pin 11 needs to be folded into the second groove 14, the operation is the same as the angle adjustment operation of the pilot pin 11.
When the first fixing mechanism 6 fixes the drawing pen or the pen core, the drawing pen or the pen core is placed in the middle of the four clamping bodies 64, then the second sleeve body 65 is rotated clockwise, the second sleeve body 65 moves downwards and pushes the upper end of the clamping arm 63 to move downwards, the lower end of the clamping arm 63 drives the clamping bodies 64 to move towards the middle, and the drawing pen or the pen core is clamped and fixed.
Compared with the prior art, the positioning pin angle adjusting device has the advantages of being convenient to use, good in reliability, capable of improving applicability and convenient to adjust the angle of the positioning pin.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims (5)

1. A multifunctional compass is characterized in that: comprises a seat body (1), a first groove (2), a driving mechanism (3), a first gear (4), a second gear (5), a first fixing mechanism (6), a second fixing mechanism (7), a reading mechanism (8), a first supporting leg (9), a second supporting leg (10), a positioning needle (11), a handle (13), a second groove (14), a rotating shaft (15) and a turntable (16), wherein the first groove (2) is arranged at the lower end of the seat body (1), the first gear (4) and the second gear (5) are arranged in the first groove (2), the first gear (4) is meshed with the second gear (5), the first supporting leg (9) and the second supporting leg (10) are respectively arranged at the lower ends of the first gear (4) and the second gear (5), the first fixing mechanism (6) capable of fixing a drawing pen or a pen refill is arranged at the lower end of the first supporting leg (9), the lower end of the second supporting leg (10) is provided with a second groove (14) and a rotating shaft (15) penetrating through the second groove (14), the lower end of the rotating shaft (15) in the second groove (14) is provided with a positioning needle (11), one end of the rotating shaft (15) is provided with a turntable (16), the second supporting leg (10) is provided with a second fixing mechanism (7) for fixing the turntable (16), the rear end of the first groove (2) is internally provided with a driving mechanism (3) for driving a second gear (5) to rotate, the side surface of the seat body (1) is provided with a reading mechanism (8) connected with the driving mechanism (3), the upper end of the seat body (1) is provided with a handle (13), the second fixing mechanism (7) comprises a support (71), a sliding body (72), a cap body (73), a spring (74) and a blocking step (75), the second supporting leg (10) is provided with the support (71), the reading device is characterized in that a sliding body (72) penetrates through the support (71), a cap body (73) is arranged at the upper end of the sliding body (72), a blocking step (75) is arranged below the support (71) of the sliding body (72), a spring (74) is sleeved on the sliding body (72) between the blocking step (75) and the support (71), third grooves (76) which are uniformly distributed and matched with the lower end of the sliding body (72) are formed in the circumferential surface of the turntable (16), the reading mechanism (8) comprises a third gear (81), a fourth gear (82), a transparent cover body (83), a first scale area (84), a second scale area (85), a first reading pointer (86) and a second reading pointer (87), a third gear (81) and a fourth gear (82) are arranged on the side surface of the base body (1), and the third gear (81) is connected with the driving mechanism (3), the fourth gear (82) is meshed with the third gear (81) and is connected with the third gear (81), a first reading pointer (86) and a second reading pointer (87) are respectively arranged on the outer sides of the third gear (81) and the fourth gear (82), a transparent cover body (83) covering the third gear (81) and the fourth gear (82) is arranged on the side surface of the seat body (1), a first scale area (84) and a second scale area (85) are arranged on the transparent cover body (83), the first scale area (84) and the second scale area (85) are respectively matched with the first reading pointer (86) and the second reading pointer (87), the first fixing mechanism (6) comprises a first sleeve body (61), a plurality of notches (62), a plurality of clamping arms (63), a plurality of clamping bodies (64) and a second sleeve body (65), a first sleeve body (61) is arranged at the lower end of the first supporting leg (9), the lower extreme of the first cover body (61) is equipped with evenly distributed's breach (62), all be equipped with rotatable coupling's centre gripping arm (63) in breach (62), the lower extreme of centre gripping arm (63) all is equipped with rotatable coupling's centre gripping body (64) in the first cover body (61), the cover is equipped with threaded connection's the second cover body (65) on the first cover body (61), the upper end of centre gripping arm (63) is taken on the second cover body (65).
2. The multi-functional compass of claim 1, wherein: drive mechanism (3) are including mount pad (31), the worm body (32), fifth gear (33) and adjust cap (34), be equipped with mount pad (31) in the rear end of first recess (2), be equipped with rotatable worm body (32) on mount pad (31), the front end and the second gear (5) meshing of the worm body (32) are connected, the worm body (32) are equipped with fifth gear (33) of being connected with third gear (81) meshing in first recess (2), be equipped with opening (12) that can supply fifth gear (33) to expose on pedestal (1), the rear end of the worm body (32) is equipped with adjusts cap (34), the tooth ratio of third gear (81) and fifth gear (33) is: 1:1.
3. The multi-functional compass of claim 1, wherein: the gear ratio of the third gear (81) to the fourth gear (82) is: 1:10.
4. The multi-functional compass of claim 1, wherein: the number of the notches (62) is four.
5. The multi-function compass of any one of claims 1-4 wherein: the rear side face of the second supporting leg (10) is provided with an accommodating groove (17), a storage box (18) with the lower end rotatably connected with the lower end of the accommodating groove (17) is arranged in the accommodating groove (17), a magnet (19) is arranged at the front part of the upper end of the storage box (18), and a handle (110) is arranged at the rear part of the upper end of the storage box (18).
CN201711138835.3A 2017-11-16 2017-11-16 Multifunctional compasses Active CN107901676B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711138835.3A CN107901676B (en) 2017-11-16 2017-11-16 Multifunctional compasses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711138835.3A CN107901676B (en) 2017-11-16 2017-11-16 Multifunctional compasses

Publications (2)

Publication Number Publication Date
CN107901676A CN107901676A (en) 2018-04-13
CN107901676B true CN107901676B (en) 2020-04-28

Family

ID=61845760

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711138835.3A Active CN107901676B (en) 2017-11-16 2017-11-16 Multifunctional compasses

Country Status (1)

Country Link
CN (1) CN107901676B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108749417B (en) * 2018-07-09 2024-04-02 江汉大学 Compasses

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090127A (en) * 1991-03-21 1992-02-25 Creative Works, L.P. Safety compass
CN2112515U (en) * 1991-07-12 1992-08-12 黄玮 Stretchable compasses
US5784791A (en) * 1996-05-16 1998-07-28 Nakamura; Rodney S. Adjustable compass
CN200967355Y (en) * 2006-11-28 2007-10-31 董四清 Multipurpose surveying and mapping calipers
CN202702964U (en) * 2012-06-08 2013-01-30 赵志杰 Short pencil lengthening sleeve
CN202753655U (en) * 2012-05-11 2013-02-27 牛光学 Compasses for teaching
CN202911389U (en) * 2012-10-17 2013-05-01 徐国仁 Compasses
CN205387017U (en) * 2016-01-29 2016-07-20 江苏大学 Campass with scale
CN206297319U (en) * 2016-09-28 2017-07-04 重庆市谷穗电器厂 A kind of compasses

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5090127A (en) * 1991-03-21 1992-02-25 Creative Works, L.P. Safety compass
CN2112515U (en) * 1991-07-12 1992-08-12 黄玮 Stretchable compasses
US5784791A (en) * 1996-05-16 1998-07-28 Nakamura; Rodney S. Adjustable compass
CN200967355Y (en) * 2006-11-28 2007-10-31 董四清 Multipurpose surveying and mapping calipers
CN202753655U (en) * 2012-05-11 2013-02-27 牛光学 Compasses for teaching
CN202702964U (en) * 2012-06-08 2013-01-30 赵志杰 Short pencil lengthening sleeve
CN202911389U (en) * 2012-10-17 2013-05-01 徐国仁 Compasses
CN205387017U (en) * 2016-01-29 2016-07-20 江苏大学 Campass with scale
CN206297319U (en) * 2016-09-28 2017-07-04 重庆市谷穗电器厂 A kind of compasses

Also Published As

Publication number Publication date
CN107901676A (en) 2018-04-13

Similar Documents

Publication Publication Date Title
CN107901675B (en) Compasses
CN107901676B (en) Multifunctional compasses
CN212298359U (en) Foldable support is used in survey and drawing
CN107856446B (en) Improved compasses
CN203198527U (en) Multifunctional protractor
CN210570286U (en) Product design is with portable folding chi utensil
CN107933158B (en) Compasses convenient to use
CN210881469U (en) Compasses capable of drawing circle with fixed radius
CN205311177U (en) Angle instrument
CN113147237A (en) Telescopic multifunctional teaching aid
CN212585607U (en) Combined type thread gauge convenient for detecting depth
CN211147600U (en) Photoelectric goniometer
CN216885983U (en) Point compasses
CN219769498U (en) Drawing rule for surveying and mapping
CN202623698U (en) Compass capable of setting diameter fast
CN215470190U (en) Grinding device is used in motor housing processing
CN211321429U (en) Cell-phone camera accessory torsion testing arrangement
CN215513008U (en) Special plotter of higher mathematics
CN211234178U (en) Mathematical data scale reference device
CN217319871U (en) Multifunctional drawing ruler for architectural design
CN212110039U (en) Hydrological compass
CN219312384U (en) Multifunctional design board
CN204526541U (en) A kind of mathematic compasses chi of imparting knowledge to students
CN213240446U (en) Aviation static current transformer test automatic loader
CN209794997U (en) multifunctional drawing ruler

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant