CN103009885B - Hand-operated type compass without sharp point - Google Patents
Hand-operated type compass without sharp point Download PDFInfo
- Publication number
- CN103009885B CN103009885B CN201210582447.5A CN201210582447A CN103009885B CN 103009885 B CN103009885 B CN 103009885B CN 201210582447 A CN201210582447 A CN 201210582447A CN 103009885 B CN103009885 B CN 103009885B
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- China
- Prior art keywords
- main body
- body bar
- backstay
- sleeve
- spring
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- Expired - Fee Related
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Abstract
The invention discloses a hand-operated type compass without a sharp point. The hand-operated type compass comprises a main body rod, a positioning rod, a positioning seat, a handle, a spring, a connecting sleeve, a compression bolt, a main scale, a vernier caliper and a compass supporting leg, wherein the main body rod is sleeved on the positioning rod, and the bottom end of the positioning rod extends out of the main body rod and is fixed with the positioning seat; the positioning seat is a transparent seat, and a cross line mark is arranged on the bottom surface of the positioning seat; the handle is sleeved on the main body rod, and the connecting sleeve is connected with the top end of the main body rod; the spring is arranged in the connecting sleeve to apply compressive pre-stress to the positioning rod; the main scale is vertical to the main body rod, and the vernier caliper is arranged on the main scale and can slide along the main scale; and the compass supporting leg is fixed on the vernier caliper and is parallel with the positioning rod. The hand-operated type compass utilizes the cross point on the bottom surface of the positioning seat to determine a center of circle, so as to increase the area contacted with a drawing sheet, and eliminate the problem that the drawing sheet is damaged during drawing. The spring is utilized to regulate the pressure applied to the compass supporting leg, so that the stress of a drawing line foot is uniform, and the drawn lines are continuous, have even thickness and can not be misplaced.
Description
Technical field
The present invention relates to a kind of schooling apparatus, relate in particular to a kind of hand-rail type without cusp compasses.
Background technology
Current compasses all have two compasses legs, and the upper end of these two compasses legs is hinged, and lower end can arbitrarily separate or close up, and is painted the size of arc radius to adjust.The end of a compasses leg is needle point, and the end of another compasses leg is to pack the setting-out pin of painting pencil line into.That compasses leg with draw point is fixed on circle centre position, then can rotary disk, select to have that compasses leg of applicable lead for retractable pencil, and loose bolts can regulate the position of lead for retractable pencil, until when the radius needing, tight a bolt and just can be used for having drawn.
With regard to current compasses, main exist following not enough: one,, because the end of that compasses leg of centering is needle point, in drawing course, drawing breakage is easily caused at tip; Two, in the process of drawing, hand that compasses leg application of force inequality to setting-out, the lines that are prone to picture circle are discontinuous, line weight inequality; Three, in picture circle process, the gradient of compasses leg is constantly being found variation, easily makes the lines between two-end-point at the whole story misplace.
Summary of the invention
For the deficiencies in the prior art part, the invention provides one and can effectively avoid brlken paper, and setting-out to be continuous, line weight is even, and avoids the hand-rail type of lines dislocation without cusp compasses.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
Hand-rail type, without cusp compasses, comprises main body bar, backstay, positioning seat, handle, rocking bar, spring, adapter sleeve, hold-down bolt, main scale, slide measure and compasses leg;
Described main body bar is hollow structure, and main body bar is enclosed within on backstay and with backstay and is slidably matched, and the bottom of described backstay is stretched out main body bar and is fixedly connected with positioning seat; Described positioning seat is transparent block, and the bottom surface of positioning seat has right-angled intersection stria, and the crosspoint of right-angled intersection stria is positioned on the axis of backstay, and described handle is hollow structure, and handle sleeve is slidably matched on main body bar and with main body bar;
One end of described adapter sleeve is connected with the top of main body bar, and hold-down bolt screws in the other end of adapter sleeve; Described spring is arranged in adapter sleeve, and one end of spring is pressed in the top of backstay, and the other end of spring is pressed on hold-down bolt; Rocking bar is fixedly connected with adapter sleeve;
Described main scale is vertical with main body bar, and one end of main scale is connected with main body bar and can be along the sliding axially of main body bar, and described slide measure is arranged on main scale and can slides along main scale; Described compasses leg is fixed on slide measure and is parallel with backstay, and the end of compasses leg is the setting-out pin that can pack pencil-lead into.
As a preferred embodiment of the present invention, one end of described spring is fixedly connected on the top of backstay, and the external diameter of spring is greater than the internal diameter of main body bar.
As another kind of preferred version of the present invention, the top of described backstay has the spacing ring that a lateral dimension is greater than the internal diameter of main body bar, one end of described spring is pressed in the top of backstay by steel ball I, the other end of spring is pressed on hold-down bolt by steel ball II.
As a modification of the present invention scheme, the bottom surface circumference of described positioning seat is provided with rubber ring, and the crosspoint of described right-angled intersection stria is positioned at the center of rubber ring.
As another kind of improvement project of the present invention, this hand-rail type also comprises sleeve I without cusp compasses, described sleeve I is enclosed within on main body bar and with main body bar and is slidably matched, and described sleeve I is fixed on main body bar by clamping screw I, and one end of main scale is fixedly connected with sleeve I.
As another improvement project of the present invention, this hand-rail type also comprises sleeve II without cusp compasses, and described sleeve II is enclosed within on adapter sleeve and with adapter sleeve and is slidably matched, and sleeve II is fixed on adapter sleeve by clamping screw II, and rocking bar is fixed in sleeve II.
Scheme as a further improvement on the present invention, one end of described adapter sleeve is connected to the top of main body bar by the mode of threaded engagement.
As further improvement project more of the present invention, described slide measure is bolted on main scale by adjustment.
Compared with prior art, tool of the present invention has the following advantages:
1, the present invention arranges transparent positioning seat in the bottom of backstay, utilize the crosspoint of the right-angled intersection stria on positioning seat bottom surface to determine the center of circle, replace the cusp in existing compasses, increase and drawing contact area, can eliminate the broken puzzlement that can't bear of drawing while drawing completely.
2, one holds handle, and another hand only needs rotating rocker just can draw circle, utilizes spring to regulate the exerting pressure of compasses leg, and setting-out pin is stressed evenly, and the lines that draw are continuous, even thickness.
3, backstay remains vertical by positioning seat with picture paper, and compasses leg is also vertical with picture paper all the time in setting-out process, and the lines that draw can not misplace.
4, by regulating the position of slide measure on main scale, just adjustable drawn radius of a circle, just can directly read drawn radius of a circle value by the scale on main scale.
Brief description of the drawings
Fig. 1 is the structural representation of hand-rail type without cusp compasses;
Fig. 2 is the upward view of positioning seat;
Fig. 3 is that the two ends of spring are pressed in the structural representation on backstay and hold-down bolt by steel ball respectively.
In accompanying drawing: 1-main body bar; 2-backstay; 3-positioning seat; 4-handle; 5-rocking bar; 6-spring; 7-adapter sleeve; 8-hold-down bolt; 9-main scale; 10-slide measure; 11-compasses leg; 12-spacing ring; 13-steel ball I; 14-steel ball II; 15-rubber ring; 16-sleeve I; 17-sleeve II; 18-clamping screw II; 19-adjustment bolt.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, 2, hand-rail type, without cusp compasses, comprises main body bar 1, backstay 2, positioning seat 3, handle 4, rocking bar 5, spring 6, adapter sleeve 7, hold-down bolt 8, main scale 9, slide measure 10, compasses leg 11, sleeve I 16, sleeve II 17 and adjusts bolt 19.
Wherein, main body bar 1 is hollow structure, and main body bar 1 is enclosed within on backstay 2 and with backstay 2 and is slidably matched, and the bottom of backstay 2 is stretched out main body bar 1 and is fixedly connected with positioning seat 3.Positioning seat 3 is transparent block, in the present embodiment, the cylinder that positioning seat 3 is made up of transparent material, the bottom surface of positioning seat 3 has right-angled intersection stria, the crosspoint of right-angled intersection stria is positioned on the axis of backstay 2, right-angled intersection stria can adopt coloured line, and the crosspoint of being convenient to right-angled intersection stria overlaps with the center of circle, is also convenient to observe the position in the center of circle simultaneously.Handle 4 is hollow structure, and handle 4 is enclosed within on main body bar 1 and with main body bar 1 and is slidably matched.
The top of main body bar 1 arranges external screw thread, and the inwall of adapter sleeve 7 arranges internal thread, and the bottom rotation set of adapter sleeve 7 is on the top of main body bar 1, and hold-down bolt 8 screws in the top of adapter sleeve 7.Spring 6 is arranged in adapter sleeve 7, and the external diameter of spring 6 is greater than the internal diameter of main body bar 1, and one end of spring 6 is fixedly connected on the top of backstay 2 and is pressed in the top of backstay 2, and the other end of spring 6 is pressed on hold-down bolt 8, and backstay 2 is applied to compressive pre-stress.Sleeve II 17 is enclosed within on adapter sleeve 7 and with adapter sleeve 7 and is slidably matched, sleeve II 17 is provided with bolt hole, clamping screw II 18 screws in bolt hole and withstands on adapter sleeve 7, and sleeve II 17 is fixed on adapter sleeve 7 by clamping screw II 18, and rocking bar 5 is fixedly connected in sleeve II 17.
Sleeve I 16 is enclosed within on main body bar 1 and with main body bar 1 and is slidably matched, in sleeve I 16, be provided with bolt hole, clamping screw I screws in bolt hole and withstands on main body bar 1, and sleeve I 16 is fixed on main body bar 1 by clamping screw I, and one end of main scale 9 is fixedly connected with sleeve I 16.Main scale 9 is vertical with main body bar 1.Slide measure 10 is arranged on main scale 9 and can slides along main scale 9, slide measure 10 is fixed on main scale 9 by adjusting bolt 19, unscrew and adjust bolt 19, the position of capable of regulating slide measure 10 on main scale 9, screwing adjustment bolt 19 can fix at the position on main scale 9 slide measure 10.Compasses leg 11 is fixed on slide measure 10 and is parallel with backstay 2, and the end of compasses leg 11 is the setting-out pin that can pack pencil-lead into.
In this enforcement, the bottom surface circumference of positioning seat 3 is provided with rubber ring 15, and the crosspoint of right-angled intersection stria is positioned at rubber ring 15 center.Behind location, the underrun rubber ring 15 of positioning seat 3 contacts with picture paper, and increasing friction force, in the process of drawing, can effectively avoid positioning seat 3 to be moved on picture paper.
For the matching relationship of backstay 2, adapter sleeve 7, spring 6 and hold-down bolt 8, also can adopt the structure shown in Fig. 3, the top of backstay 2 has the spacing ring 12 that a lateral dimension is greater than the internal diameter of main body bar 1, the bottom of spring 6 is pressed in the top of backstay 2 by steel ball I 13, the top of spring 6 is pressed on hold-down bolt 8 by steel ball II 14, the two ends of spring 6 are pressed in respectively the top of hold-down bolt 8 and backstay 2 by steel ball, can avoid the two ends of spring 6 directly to contact with the top of backstay 2 with hold-down bolt 8, reduce friction.
While using this hand-rail type without cusp compasses, first adjust the position height of main scale 9 on main body bar 1 by clamping screw II, adjust the compressive pre-stress of spring 6 by hold-down bolt 8, adjust compasses supporting leg 11 apart from the distance between backstay 2 by adjusting bolt 19, and then adjust drawn radius of a circle; Then one holds handle 4, utilizes the crosspoint of the right-angled intersection stria on positioning seat 3 bottom surfaces to determine the center of circle, and another hand only needs rotating rocker 5 just can draw circle, and the lines that draw are continuous, even thickness, and can not misplace.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (6)
1. hand-rail type, without cusp compasses, is characterized in that: comprise main body bar (1), backstay (2), positioning seat (3), handle (4), rocking bar (5), spring (6), adapter sleeve (7), hold-down bolt (8), main scale (9), slide measure (10) and compasses leg (11);
Described main body bar (1) is hollow structure, and main body bar (1) is enclosed within backstay (2) above and is slidably matched with backstay (2), and the bottom of described backstay (2) is stretched out main body bar (1) and is fixedly connected with positioning seat (3); Described positioning seat (3) is transparent block, the bottom surface of positioning seat (3) has right-angled intersection stria, the crosspoint of right-angled intersection stria is positioned on the axis of backstay (2), and described handle (4) is hollow structure, and handle (4) is enclosed within main body bar (1) above and is slidably matched with main body bar (1);
One end of described adapter sleeve (7) is connected with the top of main body bar (1), and hold-down bolt (8) screws in the other end of adapter sleeve (7); Described spring (6) is arranged in adapter sleeve (7), and one end of spring (6) is pressed in the top of backstay (2), and the other end of spring (6) is pressed on hold-down bolt (8); Rocking bar (5) is fixedly connected with adapter sleeve (7);
Described main scale (9) is vertical with main body bar (1), and one end of main scale (9) is connected with main body bar (1) and can be along the sliding axially of main body bar (1), and it is upper and can slide along main scale (9) that described slide measure (10) is arranged on main scale (9); It is upper and parallel with backstay (2) that described compasses leg (11) is fixed on slide measure (10), and the end of compasses leg (11) is the setting-out pin that can pack pencil-lead into;
One end of described spring (6) is fixedly connected on the top of backstay (2), and the external diameter of spring (6) is greater than the internal diameter of main body bar (1);
The top of described backstay (2) has the spacing ring (12) that a lateral dimension is greater than the internal diameter of main body bar (1), one end of described spring (6) is pressed in the top of backstay (2) by steel ball I (13), the other end of spring (6) is pressed on hold-down bolt (8) by steel ball II (14).
2. hand-rail type according to claim 1, without cusp compasses, is characterized in that: the bottom surface circumference of described positioning seat (3) is provided with rubber ring (15), and the crosspoint of described right-angled intersection stria is positioned at the center of rubber ring (15).
3. hand-rail type according to claim 1 is without cusp compasses, it is characterized in that: also comprise sleeve I (16), described sleeve I (16) is enclosed within main body bar (1) above and is slidably matched with main body bar (1), it is upper that described sleeve I (16) is fixed on main body bar (1) by clamping screw I, and one end of main scale (9) is fixedly connected with sleeve I (16).
4. hand-rail type according to claim 1 is without cusp compasses, it is characterized in that: also comprise sleeve II (17), described sleeve II (17) is enclosed within adapter sleeve (7) above and is slidably matched with adapter sleeve (7), it is upper that sleeve II (17) is fixed on adapter sleeve (7) by clamping screw II (18), and rocking bar (5) is fixed in sleeve II (17).
5. hand-rail type according to claim 1, without cusp compasses, is characterized in that: one end of described adapter sleeve (7) is connected to the top of main body bar (1) by the mode of threaded engagement.
6. hand-rail type according to claim 1, without cusp compasses, is characterized in that: described slide measure (10) is fixed on main scale (9) by adjusting bolt (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582447.5A CN103009885B (en) | 2012-12-28 | 2012-12-28 | Hand-operated type compass without sharp point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582447.5A CN103009885B (en) | 2012-12-28 | 2012-12-28 | Hand-operated type compass without sharp point |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103009885A CN103009885A (en) | 2013-04-03 |
| CN103009885B true CN103009885B (en) | 2014-12-10 |
Family
ID=47959213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210582447.5A Expired - Fee Related CN103009885B (en) | 2012-12-28 | 2012-12-28 | Hand-operated type compass without sharp point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103009885B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1948952A (en) * | 1932-03-22 | 1934-02-27 | Abel O Wallerius | Geometrical instrument |
| JPS59129198A (en) * | 1983-01-14 | 1984-07-25 | 中村 好成 | Circular compass |
| DE8901853U1 (en) * | 1989-02-17 | 1989-04-06 | Neuland GmbH Kommunikationssysteme, 6405 Eichenzell | Circle artist |
| CN101284474A (en) * | 2008-05-16 | 2008-10-15 | 岳治奎 | Compasses for teaching |
| CN202130187U (en) * | 2011-07-13 | 2012-02-01 | 山东科技大学 | Compass |
| CN202480681U (en) * | 2012-03-07 | 2012-10-10 | 王君祥 | Multifunctional teaching divider |
| CN202965691U (en) * | 2012-12-28 | 2013-06-05 | 重庆大学 | Compasses capable of avoiding damaging paper |
-
2012
- 2012-12-28 CN CN201210582447.5A patent/CN103009885B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103009885A (en) | 2013-04-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20151228 |
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| EXPY | Termination of patent right or utility model |