CN2237553Y

CN2237553Y - Ellipsograph

Info

Publication number: CN2237553Y
Application number: CN 95210734
Authority: CN
Inventors: 杨志坤
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-08
Filing date: 1995-05-08
Publication date: 1996-10-16
Anticipated expiration: 2005-05-08

Abstract

The utility model relates to a non-circular-curve-drawing instrument for drawing an ellipse. The utility model mainly solves the disadvantages that the procedure for drawing an ellipse is bothersome and is not easily controlled, and a curved line is not standard. The non-circular-curve-drawing instrument mainly comprises a main vertical shaft, an auxiliary vertical shaft, a regulating screw, an angle gear shaft, an angle gear which is positioned at the lower end of the main vertical shaft and is fixed on an upright post, a long shaft positioning plate arranged at the lower part of the upright post, two angle gears arranged on the angle gear shaft, an angle gear arranged at the lower end of the auxiliary vertical shaft in a rotating mode, a pen holder seat, a drawing pen holder, a drawing pen inserting seat, etc. The regulating screw and the angle gear shaft are arranged between the two vertical shafts. The instrument can conveniently draw an ellipse. The utility model can draw various ellipses with different curves.

Description

Ellipsograph

The utility model relates to a kind of oval on-circular-curve-drawing instrument that is used to paint.

Ellipse is to use a wider class curve, is again to draw the curve of relatively being hard on.In the prior art, the manual drawing ellipse generally is the approximation method that adopts four heart methods, promptly draws four arcs kiss knot respectively with compasses and forms, and it is oval also to adopt the described point graphing method to draw sometimes.The common drawback of these techniques of painting is that drawing process bothers very much, is difficult for grasping, and the general not enough standard of elliptic curve, the standard of drawing.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part and a kind of oval and ellipsograph easy to use of different sizes of drawing is provided.

For finishing above-mentioned purpose, technical solution provided by the utility model is: a kind of ellipsograph, its special character is, it has a main vertical shaft 13 and a rotary handle 14, the lower end of described main vertical shaft 13 is installed in the bevel gear 9, and can rotate therein, described bevel gear 9 is arranged on column 7 upper ends, major axis location-plate 3 is equipped with in the lower end of column 7, the lower surface of this major axis location-plate 3 is provided with pilot pin 2 or positioning sucker disk, one bevel gear shaft 10 is housed on the described main vertical shaft 13, bevel gear 26 and bevel gear 16 are housed on it, described bevel gear 26 and bevel gear 9 engagements, be provided with a sleeve 28 that links to each other with bevel gear 26 between bevel gear shaft 10 and the main vertical shaft 13, be provided with a feather key 30 in the bevel gear 26, bevel gear shaft 10 is provided with bar shaped keyway with matching, the outer end of described bevel gear shaft 10 is installed in the secondary vertical shaft 15, a bevel gear 19 is installed in the lower end of secondary vertical shaft 15, this bevel gear 19 and described bevel gear 16 engagements, the lower end of bevel gear 19 is provided with penholder seat 25, installing one penholder 20 on it, penholder 20 is provided with a paintbrush socket 23, be connected with one between described main vertical shaft 13 and the secondary vertical shaft 15 and adjust screw rod 11, this adjustment screw rod is provided with a spinning roller 12, and described bevel gear 9 is 2: 1 with the ratio of the number of teeth of bevel gear 26.

Column 7 in the above-mentioned technical solution can be a hollow column, in hollow, establish a compression spring 6 and a centering pin 1, a mesopore screw 4 is installed in hollow lower end, establishes a location screw 5 at column 7 sidewalls, simultaneously one group of click 18,17 of installing between bevel gear shaft 10 and secondary vertical shaft 15.If pass through dog screw 5 with centering pin 1 location, make rotation no longer mutually between bevel gear shaft 10 and the secondary vertical shaft 15 by click 18,17 location simultaneously during use, this ellipsograph also can be used as the compasses use of picture circle like this.

Paintbrush bar 20 in the above-mentioned technical solution can be directly to be fixed on the penholder seat 25, also can be to be actively plugged in the penholder seat 25, and limits the position by being installed in dog screw 33 on the penholder seat 25 and the bar-shaped trough that is located on the paintbrush bar 20.

Paintbrush socket 23 in the above-mentioned technical solution can be to be fixedly connected on paintbrush bar 20, also can be slidably to be inserted on the paintbrush bar 20.

A jack can be established in paintbrush seat 23 middle parts in the above-mentioned technical solution, and establishes the adjustment slit 24 that penetrates both sides, establishes a screw rod 22 and degree of tightness nut 21 on jack top.Also can establish a jack, establish a location screw at sidewall at paintbrush socket 23 middle parts.

Adjustment screw rod 11 in the above-mentioned technical solution can be the screw rod that halves is provided with reverse thread, and respectively with thread connection on main vertical shaft 13 and secondary vertical shaft 15.Also can be the screw thread that only is provided with a direction, wherein establishing screw thread one end and master or secondary vertical shaft be thread connection, does not establish screw thread one end and then connects for the rotation of sliding.But the distance with the former is regulated the speed comparatively fast.

The accompanying drawing drawing is described as follows:

Fig. 1 is the structural representation of a preferred embodiment of the utility model;

Fig. 2 is the local structure for amplifying schematic diagram of Fig. 1;

Fig. 3 is the A-A cutaway view Amplified image of Fig. 1.

Each label declaration is as follows among the figure:

The 1-centering pin, 2-pilot pin, 3-major axis location-plate, 4-mesopore screw, the 5-dog screw, 6-compresses spring, 7-column, 8-nut, the 9-bevel gear, the 10-bevel gear shaft, 11-adjusts screw rod, 12-spinning roller, 13-master's vertical shaft, 14-rotary handle, the secondary vertical shaft of 15-, the 16-bevel gear, 17-ratchet, 18-ratchet, the 19-bevel gear, 20-paintbrush bar, 21-degree of tightness nut, the 22-screw rod, 23-paintbrush socket, 24-slit, 25-penholder seat, 26-bevel gear, 27-back-up ring, the 28-sleeve, 29-lasso, 30-feather key, the 31-trip bolt, 32-pin, 33-dog screw.

Referring to Fig. 1, Fig. 2, Fig. 3, this ellipsograph has a main vertical shaft 13 and is arranged on the rotary handle 14 on its top, the lower end of described main vertical shaft 13 is installed in the bevel gear 9, and can rotate freely therein, bottom by nut 8 location, described bevel gear 9 is fixed on column 7 upper ends by trip bolt 31, a major axis location-plate 3 is equipped with in the lower end of column 7, make it determine the position of transverse by establishing thereon mark, the lower surface of this major axis location-plate 3 is provided with two pilot pins 2, described column 7 is hollow, in hollow, be provided with a compression spring 6, it divides into a centering pin 1, this centering pin 1 passes from the mesopore screw 4 that is located at column 7 lower ends, establish a location screw 5 at the sidewall of column 7, the rotatable bevel gear shaft 10 of installing on the described main vertical shaft 13, bevel gear 26 and bevel gear 16 are housed on it, bevel gear 26 is meshed with bevel gear 9, be provided with a sleeve 28 that links to each other with bevel gear 26 between described bevel gear shaft 10 and the main vertical shaft 13, distance between bevel gear 26 and the main vertical shaft 13 is not changed, thereby be meshed with another bevel gear 9 all the time, two back-up rings 27 are installed in main vertical shaft 13 both sides outside sleeve 28, establish a lasso 29 between back-up ring 27 and the bevel gear 26, be provided with a feather key 30 in the bevel gear 26, bevel gear shaft 10 is provided with bar shaped keyway with matching, make bevel gear shaft 10 in sleeve 28, to be free to slide and can not rotate, keep rotating with angular speed with bevel gear 26, the outer end of described bevel gear shaft 10 is rotatably installed in the secondary vertical shaft 15, one group of click 18 is installed on the bevel gear shaft 10 and on the secondary vertical shaft 15,17, a rotating driven wheel of differential 19 is installed in the lower end of secondary vertical shaft 15, this bevel gear 19 and described bevel gear 16 engagements, both are with number of teeth gear, the lower end of bevel gear 19 is provided with penholder seat 25, paintbrush bar 20 is by establishing two bar-shaped troughs thereon and dog screw 33 on the penholder seat 25 being installed and the pin 32 of opposite side is inserted in the penholder seat 25, make paintbrush bar 20 in penholder seat 25, move horizontally but and can not rotate, and can pass through screwed in place screw 33 fixed positions, paintbrush socket 23 is actively plugged in the paintbrush bar 20, make it do horizontal slip but can not to rotate by being located in two bar-shaped troughs on the paintbrush bar 20 and the paintbrush socket 23 two raised lines with matching along paintbrush bar 20, a jack is established at paintbrush socket 23 middle parts, and be provided with the adjustment slit 24 that penetrates both sides, establish a small screw 22 and degree of tightness nut 21 on jack top, between described main vertical shaft 13 and secondary vertical shaft 15, be connected with the adjustment screw rod 11 that a halves is provided with reverse thread, and respectively with thread connection on two vertical shafts, its middle part is provided with a spinning roller 12, and described bevel gear 9 is 2: 1 with the ratio of the number of teeth of bevel gear 26.

When drawing ellipse, rotation spinning roller 12, by adjusting the distance that screw rod 11 is regulated between main vertical shaft 13 and the secondary vertical shaft 15, make this distance equal the mean value of drawn transverse and minor axis---i.e. (major axis+minor axis)/2, unclamp degree of tightness nut 21 again, paintbrush is inserted in the jack on the paintbrush socket 23, tighten degree of tightness nut 21 again, socket is clamped paintbrush, length according to major semiaxis, the position of mobile paintbrush socket 23 on paintbrush bar 20, also removable, when paintbrush bar 20 is located at correct position again screwed in place screw 33 limit positions, make the paintbrush point equal major semiaxis to the distance of centering pin, position as shown in Figure 1, pilot pin 2 is positioned on the picture, and the mark on the use transverse location-plate 3 chooses the position of major axis, be retracted into behind centering pin 1 pressurized in column 7 hollow, thereby to the location do not exert an influence, rotate rotary handle 14, main vertical shaft 13 drives bevel gear shaft 10 and rotates, bevel gear 9 and column 7 are motionless, bevel gear 9 is by meshing gear 26, bevel gear shaft 10, bevel gear 16 drives bevel gear 19 rotations, paintbrush in the paintbrush socket 23 when rotating, is being rotated around secondary vertical shaft 15 on main vertical shaft 13, because bevel gear 9 is 2: 1 with the ratio of the number of teeth of bevel gear 26 just, like this when paintbrush rotates a week around main vertical shaft 13, just rotated for two weeks around secondary vertical shaft 15, thereby the track that paintbrush is drawn just in time is an ellipse on picture.

If need the picture bowlder, then the screwed in place screw 5, centering pin 1 can not be retracted in the column 7, adjust the ratchet 17 that is installed on the secondary vertical shaft 15 simultaneously, make the ratchet installed on itself and the bevel gear shaft 10 18 transfer interlock to from disengagement, even can not rotate relatively between each, the home position that centering pin 1 is scheduled on the picture again, rotate main 13 1 weeks of vertical shaft, then paintbrush drawn track on picture is a circle.

In conjunction with the foregoing description as can be seen, the utility model has following advantage compared to existing technology:

1, the oval process of drafting is very convenient, and elliptic curve standard, the standard of drawing;

2 by distance between the major and minor

vertical shaft

13,15 of adjustment and the horizontal range between paintbrush socket 23 and the secondary vertical shaft 15, can draw out the ellipse of multiple different curves, makes the scope of application very wide;

3, also can be used as the compasses use by increasing few parts, reach the dual-purpose purpose of an instrument;

4, simple in structure, adjusting, easy to use.

Claims

1, a kind of ellipsograph, it is characterized in that: it has a main vertical shaft (13) and rotary handle (14), the lower end of described main vertical shaft (13) is installed in the bevel gear (9), and can rotate therein, described bevel gear (9) is arranged on a column (7) upper end, major axis location-plate (3) is equipped with in the lower end of column (7), the lower surface of this major axis location-plate (3) is provided with pilot pin (2) or positioning sucker disk, one bevel gear shaft (10) is housed on the described main vertical shaft (13), bevel gear (26) and bevel gear (16) are housed on it, described bevel gear (26) and bevel gear (9) engagement, be provided with a sleeve (28) that links to each other with bevel gear (26) between bevel gear shaft (10) and the main vertical shaft (13), be provided with a feather key (30) in the bevel gear (26), bevel gear shaft (10) is provided with bar shaped keyway with matching, the outer end of described bevel gear shaft (10) is installed in the secondary vertical shaft (15), a bevel gear (19) is installed in the lower end of secondary vertical shaft (15), this bevel gear (19) and described bevel gear (16) engagement, the lower end of bevel gear (19) is provided with penholder seat (25), installing one penholder (20) on it, penholder (20) is provided with a paintbrush socket (23), be connected with one between described main vertical shaft (13) and the secondary vertical shaft (15) and adjust screw rod (11), this adjustment screw rod (11) is provided with a spinning roller (12), and described bevel gear (9) is 2: 1 with the ratio of the number of teeth of bevel gear (26).

2, ellipsograph according to claim 1, it is characterized in that: described column (7) is a hollow column, in hollow, establish a compression spring (6) and a centering pin (1), a mesopore screw (4) is installed in hollow lower end, establish a location screw (5) at column (7) sidewall, simultaneously installing one group of click (18,17) between bevel gear shaft (10) and secondary vertical shaft (15).

3, ellipsograph according to claim 1, it is characterized in that: described paintbrush bar (20) is to be actively plugged in the penholder seat (25), and limits the position by the bar-shaped trough that is installed in the dog screw (33) on the penholder seat (25) and be located on the paintbrush bar (20).

4, ellipsograph according to claim 1 is characterized in that: described paintbrush socket (23) is slidably to be inserted on the paintbrush bar (20).

5, according to claim 1 or 2 or 3 or 4 described ellipsographs, it is characterized in that: a jack is established at described paintbrush seat (23) middle part, and establishes the adjustment slit (24) that penetrates both sides, establishes a screw rod (22) and degree of tightness nut (21) on jack top.

6, according to claim 1 or 2 or 3 or 4 described ellipsographs, it is characterized in that: described adjustment screw rod (11) is the screw rod that halves is provided with reverse thread, and respectively with thread connection on main vertical shaft (13) and secondary vertical shaft (15).

7, ellipsograph according to claim 5 is characterized in that: described adjustment screw rod (11) is the screw rod that halves is provided with reverse thread, and respectively with thread connection on main vertical shaft (13) and secondary vertical shaft (15).