CN202463329U

CN202463329U - Novel compasses

Info

Publication number: CN202463329U
Application number: CN2012200596393U
Authority: CN
Inventors: 周兴军; 刘丽丽; 郭绪清; 周冬波
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2012-02-23
Filing date: 2012-02-23
Publication date: 2012-10-03
Anticipated expiration: 2022-02-23

Abstract

The utility model discloses novel compasses which comprise a hollow straight tube; the upper end of the hollow straight tube is sealed; a drawing pen is arranged in the inner chamber of the hollow straight tube; a fastening piece is in threaded connection with the lower end part of the hollow straight tube, and limits and fixes the drawing pen in the inner part of the hollow straight tube; the lower end of the drawing pen extends out of the lower end port of the hollow straight tube; a calibrated scale is movably hinged on the fastening piece; a positioning slide block is connected with the outer part of the calibrated scale in a sliding manner; a calibrated scale placing groove is formed in a side wall of the hollow straight tube in a protruding manner; the length and the size of the calibrated scale placing groove are matched with those of the calibrated scale; when being rotated and folded, the calibrated scale is just placed in the calibrated scale placing groove; and a positioning pin is fixed at the center of the lower end of the positioning slide block. When the novel compasses are used for drawing a circle, the positioning of the center of the circle is relatively stable, the operation is very convenient, and the circle drawing precision and the circle drawing quality are improved. The calibrated scale can be stored in the calibrated scale placing groove in the side wall of the hollow straight tube through being rotated and folded, and after being folded, the calibrated scale can be used as a pen, and the carrying is very convenient.

Description

A kind of novel bow compass

Technical field

The utility model relates to a kind of drawing office accommodation, relates in particular to a kind of novel bow compass.

Background technology

Compasses are drawing instruments that people often use when drawing circle, existing common compasses generally include a handle with the handle two legs of hinge mutually.The end of one leg is a pilot pin, and the end of one leg is a drawing pen nib in addition.During use two legs is separated into required radius, pilot pin is fixed in the center of circle, pinches handle rubbing rotation and makes drawing pen nib draw out required camber line along radius.

There is following defective in traditional both legs compasses at the picture bowlder;

1. drawing the bowlder center of circle moves easily; Because each connecting portion of traditional compasses is movable relatively.

2. picture bowlder, the size of radius are not easy control, and precision is relatively poor, also can shoes when drawing than great circle.

3. traditional round programming circular velocity is slow, if draw the circle of certain radius, will use compasses on ruler, to measure radius in advance, and then draws circle.

4. traditional compasses function singleness, traditional compasses have wedge angle, carry inconvenience, also can scratch desktop sometimes or damage paper or the scuffing finger.

5. traditional compasses are being drawn than the long radius bowlder, for student, beginner or very inconvenience of user once in a while.When distance increased drafting than orthodrome between two legs of compasses, the gradient on two legs and drawing plane strengthened, so the wayward suitable dynamics to pilot pin or drawing pen nib of handle.Rubbing handle rotation on the one hand should keep pilot pin to be fixed in the center of circle on the other hand in use, and the pressure that must award drawing pen nib again is suitable.If it is too small to award the pressure of drawing pen nib, the circular arc lines of then drawing out are unclear, and are excessive as if the pressure that awards drawing pen nib, then can hinder the handle rotation, even make pilot pin leave the center of circle.

The utility model content

To the weak point that above-mentioned prior art exists, the purpose of the utility model is to provide that a kind of precision is higher, center of circle positioning stablity, draw circular velocity novel bow compass fast, easy to carry, can solve the problems of the technologies described above effectively.

The purpose of the utility model realizes through following technical proposals:

A kind of novel bow compass; Comprise the hollow straight tube of end closure, be provided with drawing pen in the hollow straight tube inner chamber, the lower end end thread of hollow straight tube is equipped with securing member; The spacing fixedly drawing pen of said securing member is inner in hollow straight tube, and stretch out from the lower end port of hollow straight tube the lower end of drawing pen; Be movably hinged on the said securing member and be provided with rule; The rule slide outside is connected with positioning sliding block; The sidewall raising of hollow straight tube is provided with the rule standing groove that is complementary with rule length, size; When the rule rotary folding, said rule just in time is positioned in this rule standing groove, and the lower end center fixation of positioning sliding block is provided with pilot pin.

In order to realize the utility model better, have watch window on the sidewall of said positioning sliding block, the upper end screw thread of positioning sliding block is connected with locking knob.

Further, the lower end of said positioning sliding block also is fixed with threaded connector, and said pilot pin is fixed at the center, lower end of threaded connector; The lateral wall of said threaded connector is provided with external screw thread, and the upper end of said hollow straight tube has the internal thread hole that is complementary with the threaded connector external screw thread.

As preferably, the lower end buckle of said hollow straight tube is connected with the cap for brush.

The utility model is compared than prior art, has the following advantages and beneficial effect:

(1) the utility model adopts and the complete structure inequality of traditional both legs compasses; Compasses are provided with hollow straight tube, and in the hollow straight tube drawing pen are installed, and are fixedly connected with rule on the hollow straight tube sidewall; Slidely connect positioning sliding block on the rule, the positioning sliding block lower end is fixed with pilot pin.During drawing, pilot pin place ten home positions let have drawing pen and rotate the required circular arc of just easily painting out around pilot pin.Use location, this novel bow compass picture bowlder center of circle comparatively stable, easy to operate, draw out radius of a circle very accurately, improved and drawn round precision and quality.

(2) rule of the utility model can be accommodated in the rule standing groove on the hollow straight tube sidewall by rotary folding, can use as pen after folding, and carry also very convenient.

(3) the hollow straight tube top of the utility model has internal thread hole; The lower end of positioning sliding block is provided with threaded connector, when not using this novel bow compass or folding, can disassemble positioning sliding block; This positioning sliding block screw thread is installed on hollow straight tube top, and integral body is more attractive in appearance.

Description of drawings

Fig. 1 is the user mode sketch map of the utility model;

Fig. 2 is the assembly structure sketch map of the utility model;

Fig. 3 takes in the structural representation after folding for the utility model.

Wherein, the pairing name of the Reference numeral in the accompanying drawing is called:

The hollow straight tube of 1-, 2-securing member, 3-drawing pen, 4-rule, 5-positioning sliding block, 6-threaded connector, 7-pilot pin, 8-locking knob, 9-rule standing groove, 10-internal thread hole, the 11-cap for brush, 51-watch window, 52-chute.

The specific embodiment

Below in conjunction with embodiment the utility model is done to specify further:

Embodiment

Like Fig. 1～shown in Figure 3; A kind of novel bow compass; The hollow straight tube 1 that comprises end closure is provided with drawing pen 3 in hollow straight tube 1 inner chamber, and the lower end end thread of hollow straight tube 1 is equipped with securing member 2; Said securing member 2 spacing fixedly drawing pens 3 are in hollow straight tube 1 inside, and stretch out from the lower end port of hollow straight tube 1 lower end of drawing pen 3; Be movably hinged on the securing member 2 and be provided with rule 4; Rule 4 slide outside are connected with positioning sliding block 5; The sidewall raising of hollow straight tube 1 is provided with the rule standing groove 9 that is complementary with rule 4 length, size; When rule 4 rotary foldings, rule 4 just in time is positioned in this rule standing groove 9, and the lower end center fixation of positioning sliding block 5 is provided with pilot pin 7.

Have watch window 51 on the sidewall of above-mentioned positioning sliding block 5, the upper end screw thread of positioning sliding block 5 is connected with locking knob 8; Positioning sliding block 5 inside have chute 52, and the rule 4 of present embodiment passes chute 52, make positioning sliding block 5 be free to slide on the rule 4 again.

The lower end of above-mentioned positioning sliding block 5 also is fixed with threaded connector 6, and pilot pin 7 is fixed at the center, lower end of threaded connector 6; The lateral wall of threaded connector 6 is provided with external screw thread, and the upper end of hollow straight tube 1 has the internal thread hole 10 that is complementary with threaded connector 6 external screw threads.

The lower end buckle of above-mentioned hollow straight tube 1 is connected with the cap for brush 11.

See also Fig. 3, the rule 4 of present embodiment can be accommodated in the rule standing groove 9 on hollow straight tube 1 sidewall by rotary folding, can use as pen after folding, and carry also very convenient.

See also Fig. 3, hollow straight tube 1 top of present embodiment has internal thread hole 10, and the lower end of positioning sliding block 5 is provided with threaded connector 6; When not using this novel bow compass; Can disassemble positioning sliding block 5, these positioning sliding block 5 screw threads are installed on hollow straight tube 1 top, integral body is more attractive in appearance.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims

1. novel bow compass; It is characterized in that: the hollow straight tube (1) that comprises end closure; Be provided with drawing pen (3) in hollow straight tube (1) inner chamber; The lower end end thread of hollow straight tube (1) is equipped with securing member (2), and the spacing fixedly drawing pen of said securing member (2) (3) is in hollow straight tube (1) inside, and stretch out from the lower end port of hollow straight tube (1) lower end of drawing pen (3); Be movably hinged on the said securing member (2) and be provided with rule (4); Rule (4) slide outside is connected with positioning sliding block (5); The sidewall raising of hollow straight tube (1) is provided with the rule standing groove (9) that is complementary with rule (4) length, size; When rule (4) rotary folding, rule (4) just in time is positioned in this rule standing groove (9), and the lower end center fixation of positioning sliding block (5) is provided with pilot pin (7).

2. according to the described a kind of novel bow compass of claim 1, it is characterized in that: have watch window (51) on the sidewall of said positioning sliding block (5), the upper end screw thread of positioning sliding block (5) is connected with locking knob (8).

3. according to claim 1 or 2 described a kind of novel bow compass, it is characterized in that: the lower end of said positioning sliding block (5) also is fixed with threaded connector (6), and said pilot pin (7) is fixed at the center, lower end of threaded connector (6); The lateral wall of said threaded connector (6) is provided with external screw thread, and the upper end of said hollow straight tube (1) has the internal thread hole (10) that is complementary with threaded connector (6) external screw thread.

4. according to the described a kind of novel bow compass of claim 1, it is characterized in that: the lower end buckle of said hollow straight tube (1) is connected with the cap for brush (11).