CN2475572Y

CN2475572Y - Angle resolver

Info

Publication number: CN2475572Y
Application number: CN 01225760
Authority: CN
Inventors: 包那
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-23
Filing date: 2001-05-23
Publication date: 2002-02-06
Anticipated expiration: 2011-05-23

Abstract

An angle equally dividing device pertains to dividing tools for plane angles. The angle equally dividing device is composed by that the upper part of a sliding ruler, an angle edge ruler, a connection ruler, a division ruler are combined to be a diamond by hinges, and are combined with a reference ruler by a hinge and a sliding sleeve; every ruler can freely rotate around the hinge thereof, the sliding ruler can slide in the sliding sleeve. The angle equally dividing device can conveniently divide an angle into a multiple of 2 and 3 equally, the angle is not required to measure and calculate. When not used, the angle equally dividing can be folded to be a straight ruler, is convenient to take and preserve.

Description

Angle resolver

A kind of angle resolver belongs to the plane angle partition tools.

At present,, adopt protractor mostly, cut apart by calculating angle for the divided in equal amounts at angle.Divide chamfer in this way, waste time and energy, and efficient is low.

The purpose of this utility model provides a kind of instrument that the angle can be divided into 2 and 3 multiple.

Angle resolver of the present utility model by slip chi, sliding sleeve, arm of angle chi, connect chi, cut apart chi and station meter constitutes; Sliding sleeve is by the end of hinge-coupled at station meter, and it is free to rotate, the slip chi is inserted in the sliding sleeve, and can in sliding sleeve, move, arm of angle chi and an end of cutting apart chi by hinge-coupled on station meter, the other end of cutting apart chi is in the same place by hinge-coupled with an end that connects chi, the other end that connects chi is in the same place by hinge-coupled with the upper end of slip chi, the other end of arm of angle chi and slip chi are by hinge-coupled together, the top of slip chi, arm of angle chi, connect chi, cut apart chi and constitute an equilateral parallelogram, each chi all can freely rotate around its hinge, the hinge center that connects each chi all has through hole and is used for the location, connect arm of angle chi, cut apart chi and station meter hinge center distance and arm of angle chi to sliding sleeve hinge center, connect chi, the centre distance of cutting apart chi two ends hinge equates, connects arm of angle chi, cut apart chi and station meter hinge center and sliding sleeve hinge center all on the datum line of station meter.

The working method of this angle resolver: if an angle will be divided into 2 or 4 five equilibriums, the summit at angle and the hinge centrally aligned on the station meter, and with a limit of the datum line alignment angle of station meter are with another limit of the center line alignment angle of corner chi.At this moment, the center line of cutting apart chi is 2 bisectors at this angle, and the summit at this angle is 1/4th angular bisectors at this angle to the on line at hinge center, slip chi top.If require the timesharing that classifies in three categories of an angle, the summit at angle and the hinge centrally aligned on the station meter, and with one side of the datum line alignment angle of station meter, the central point of corner chi and station meter connecting hinge is aimed at another limit at this angle with the on line of slip chi top hinge central point, promptly slide chi with connect chi hinge centre bore and be placed on the another side at angle.At this moment, the center line of cutting apart chi is 1/3rd angular bisectors at this angle.This angle resolver can be divided into the

angle

2 and 3 multiple five equilibrium very easily, does not need to take measurement of an angle and calculate.Not the time spent, it can be folded into a ruler, be easy to carry and preserve.

I trisection of an angle principle proves: (see figure 2)

Angle resolver and ∠ NOM are put together, promptly tetragonal diagonal OC alignment angle sideline ON, datum line OA alignment angle sideline OM,

∠ COA is the exterior angle of the ∠ EOC of △ OEC, by leg-of-mutton exterior angle theorem,

∠COA＝∠E＋∠ECO (1)

Be isosceles triangle (by design EO=OD) because of △ EOD again,

∴∠E＝∠ODE (2)

Again because △ ODC is isosceles triangle (by design OD=DC)

∴∠DOC＝∠OCD (3)

Again point-blank, by design point E, D, C

∴∠ODE＝2∠DOC (4)

By (2), ∠ E=2 ∠ DOC (5)

By ∠ OCE=∠ OCD, reach (1), (5) as can be known again

∠COA＝∠E＋∠OCD＝2∠OCD＋∠OCD＝3∠OCD(6)

By design, because quadrangle ODCB is a rhombus, and OC is a diagonal,

∴∠OCD＝∠COB (7)

Get ∠ COA=3 ∠ COB by (6), (7)

Be that ∠ COB=1/3 ∠ COA must demonstrate,prove.

The II angle two, quartering principle proves: (see figure 2)

Angle resolver and ∠ POM are put together, i.e. the center line OD alignment angle sideline OP of arm of angle chi, datum line OA alignment angle sideline OM,

∠ DOA is the exterior angle of the ∠ EOD of △ EOD,

∴∠DOA＝∠E＋∠ODE＝2∠ODE(∵OD＝OE) (1)

By design, some E, D, C in a straight line, and quadrangle OBCD is rhombus,

So EC ∥ OB, so

∠ODE＝∠DOB (2)

Get ∠ DOA=2 ∠ DOB promptly by above-mentioned (1), (2)

∠DOB＝1/2∠DOA (3)

By OC is the diagonal of rhombus OBCD, therefore

∠DOB＝2∠DOC

By (3), ∠ DOC=1/4 ∠ DOA must demonstrate,prove.

Fig. 1 is the general assembly schematic diagram of this angle resolver;

Fig. 2 is the schematic diagram of this angle resolver.

Embodiment: (see figure 1)

This angle resolver is by slip chi 1, sliding sleeve 2, arm of angle chi 3, connect chi 4, cut apart chi 5 and station meter 8 formations, they are ruler, the top of slip chi 1, sliding sleeve 2, arm of angle chi 3, connect chi 4, the centre of cutting apart chi 5 all has groove 6, sliding sleeve 2 is by the end of hinge-coupled at station meter 8, and it is free to rotate, slip chi 1 is inserted in the sliding sleeve 2, and can in sliding sleeve 2, move, arm of angle chi 3 and an end of cutting apart chi 5 by hinge-coupled on station meter 8, the other end of cutting apart chi 5 is in the same place by hinge-coupled with an end that connects chi 4, the other end that connects chi 4 is in the same place by hinge-coupled with the upper end of slip chi 1, the other end of arm of angle chi 3 and slip chi 1 are by hinge-coupled together, the top of slip chi 1, arm of angle chi 3, connect chi 4, cut apart chi 5 and constitute rhombus, each chi all can freely rotate around its hinge, the hinge center that connects each chi all has positioning through hole, connect arm of angle chi 3, cut apart chi 5 and station meter 8 hinge centers distance and arm of angle chi 3 to sliding sleeve 2 hinge centers, connect chi 4, the centre distance of cutting apart chi 5 two ends hinges equates, connects arm of angle chi 3, cut apart chi 5 and station meter 8 hinge centers and sliding sleeve 2 hinge centers all on the datum line 7 of station meter 8.

Claims

An angle resolver by slip chi, sliding sleeve, arm of angle chi, connect chi, cut apart chi and station meter constitutes; It is characterized in that sliding sleeve is by the end of hinge-coupled at station meter, and it is free to rotate, the slip chi is inserted in the sliding sleeve, and can in sliding sleeve, move, arm of angle chi and an end of cutting apart chi by hinge-coupled on station meter, the other end of cutting apart chi is in the same place by hinge-coupled with an end that connects chi, the other end that connects chi is in the same place by hinge-coupled with the upper end of slip chi, the other end of arm of angle chi and slip chi are by hinge-coupled together, the top of slip chi, arm of angle chi, connect chi, cut apart chi and constitute an equilateral parallelogram, each chi all can freely rotate around its hinge.
2. angle resolver according to claim 1, the hinge center of it is characterized in that connecting slip chi, arm of angle chi, connect chi, cutting apart chi all have through hole and are used for the location.
3. angle resolver according to claim 1, it is characterized in that connecting arm of angle chi, cut apart chi and station meter hinge center to the distance at sliding sleeve hinge center with arm of angle chi, connect chi, the centre distance of cutting apart chi two ends hinge equates.
4. angle resolver according to claim 1 is characterized in that connecting arm of angle chi, cuts apart chi and station meter hinge center and sliding sleeve hinge center all on the datum line of station meter.