CN103009885A - Hand-operated type compass without sharp point - Google Patents
Hand-operated type compass without sharp point Download PDFInfo
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- CN103009885A CN103009885A CN2012105824475A CN201210582447A CN103009885A CN 103009885 A CN103009885 A CN 103009885A CN 2012105824475 A CN2012105824475 A CN 2012105824475A CN 201210582447 A CN201210582447 A CN 201210582447A CN 103009885 A CN103009885 A CN 103009885A
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- main body
- body bar
- backstay
- compasses
- sleeve
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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 the cusp compasses.
Background technology
Present compasses all have two compasses legs, and the upper end of these two compasses legs is hinged, and the lower end can arbitrarily separate or close up, to adjust the size of the arc radius of being painted.The end of a compasses leg is needle point, the setting-out pin of the end of another compasses leg for packing into and painting pencil line.That compasses leg with draw point is fixed in circle centre position, then can rotary disk, select to have that compasses leg of suitable lead for retractable pencil, and loose bolts can be regulated the position of lead for retractable pencil, until during the radius that needs, tighting a bolt just can be used for having drawn.
With regard to present compasses, mainly have following deficiency: one, because the end of that compasses leg of centering is needle point, in drawing course, the tip easily causes drawing damaged; Two, in the process of drawing, hand is uneven to that compasses leg application of force of setting-out, and the lines that are prone to the picture circle are discontinuous, and line weight is uneven; Three, in drawing the circle process, the gradient of compasses leg is constantly being found variation, makes easily the lines dislocation between the two-end-point at the whole story.
Summary of the invention
For the deficiencies in the prior art part, the invention provides and a kind ofly can effectively avoid brlken paper, and setting-out to be continuous, line weight is even, and the hand-rail type of avoiding the lines dislocation is without the cusp compasses.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
Hand-rail type comprises main body bar, backstay, positioning seat, handle, rocking bar, spring, adapter sleeve, hold-down bolt, main scale, slide measure and compasses leg without the cusp compasses;
Described main body bar is hollow structure, and the main body bar is enclosed within on the backstay and with backstay and is slidingly matched, and the bottom of described backstay is stretched out the main body bar and is fixedly connected with positioning seat; Described positioning seat is transparent block, and the bottom surface of positioning seat has the 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 slidingly matched on the main body bar and with the 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 the adapter sleeve, and a side pressure of spring is at the top of backstay, and the other end of spring is pressed on the hold-down bolt; Rocking bar is fixedly connected with adapter sleeve;
Described main scale is vertical with the main body bar, and an end of main scale is connected with the main body bar and can be along the endwisely slipping of main body bar, and described slide measure is arranged on the main scale and can slides along main scale; Described compasses leg is fixed on the slide measure and is parallel with backstay, and the end of compasses leg is the setting-out pin of the pencil-lead of can packing into.
As a preferred embodiment of the present invention, an 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 a lateral dimension greater than the spacing ring of the internal diameter of main body bar, one end of described spring is pressed in the top of backstay by the steel ball I, and the other end of spring is pressed on the hold-down bolt by the steel ball II.
As a kind of improvement project of the present invention, 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 the sleeve I without the cusp compasses, described sleeve I is enclosed within on the main body bar and with the main body bar and is slidingly matched, and described sleeve I is fixed on the main body bar by the clamping screw I, and an end of main scale is fixedly connected with the sleeve I.
As another improvement project of the present invention, this hand-rail type also comprises the sleeve II without the cusp compasses, and described sleeve II is enclosed within on the adapter sleeve and with adapter sleeve and is slidingly matched, and the sleeve II is fixed on the adapter sleeve by the clamping screw II, and rocking bar is fixed on the sleeve II.
Scheme as a further improvement on the present invention, an end of described adapter sleeve is connected to the top of main body bar by the mode of threaded engagement.
As further improvement project of the present invention, described slide measure is bolted on the main scale by adjustment.
Compared with prior art, the present invention has following advantage:
1, the present invention arranges transparent positioning seat in the bottom of backstay, utilize the crosspoint of the right-angled intersection stria on the positioning seat bottom surface to determine the center of circle, replace the cusp in the existing compasses, increase and the drawing contact area, can eliminate the broken puzzlement that can't bear of drawing when finishing of drawing fully.
2, one holds handle, and the another hand only needs rotating rocker just can draw circle, utilizes spring to regulate the exerting pressure of compasses leg, and the setting-out pin is stressed evenly, and the lines that draw are continuous, even thickness.
3, backstay remains vertical by positioning seat with the picture paper, and the compasses leg is also vertical with the picture paper all the time in the setting-out process, and the lines that draw can not misplace.
4, by regulating the position of slide measure on main scale, just drawn radius of a circle can be regulated, just drawn radius of a circle value can be directly read by the scale on the main scale.
Description of drawings
Fig. 1 is that hand-rail type is without the structural representation of cusp compasses;
Fig. 2 is the upward view of positioning seat;
Fig. 3 is that the two ends of spring are pressed in structural representation on backstay and the hold-down bolt by steel ball respectively.
In the 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.
The specific embodiment
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 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 without the cusp compasses.
Wherein, main body bar 1 is hollow structure, and main body bar 1 is enclosed within on the backstay 2 and with backstay 2 and is slidingly 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 by transparent material, the bottom surface of positioning seat 3 has the right-angled intersection stria, the crosspoint of right-angled intersection stria is positioned on the axis of backstay 2, the right-angled intersection stria can adopt coloured line, and the crosspoint of being convenient to the right-angled intersection stria overlaps with the center of circle, also is convenient to observe simultaneously the position in the center of circle.Handle 4 is hollow structure, and handle 4 is enclosed within on the main body bar 1 and with main body bar 1 and is slidingly 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 the adapter sleeve 7, and the external diameter of spring 6 is greater than the internal diameter of main body bar 1, and an 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 the hold-down bolt 8, and backstay 2 is applied compressive pre-stress.Sleeve II 17 is enclosed within on the adapter sleeve 7 and with adapter sleeve 7 and is slidingly matched, sleeve II 17 is provided with bolt hole, clamping screw II 18 screws in bolt hole and withstands on the adapter sleeve 7, and sleeve II 17 is fixed on the adapter sleeve 7 by clamping screw II 18, and rocking bar 5 is fixedly connected on the sleeve II 17.
Sleeve I 16 is enclosed within on the main body bar 1 and with main body bar 1 and is slidingly matched, be provided with bolt hole in sleeve I 16, the clamping screw I screws in bolt hole and withstands on the main body bar 1, and sleeve I 16 is fixed on the main body bar 1 by the clamping screw I, and an 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 the main scale 9 and can slides along main scale 9, slide measure 10 is fixed on the 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 the position of slide measure 10 on main scale 9.Compasses leg 11 is fixed on the slide measure 10 and is parallel with backstay 2, and the end of compasses leg 11 is the setting-out pin of the pencil-lead of can packing 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 the center of rubber ring 15.Behind the location, the underrun rubber ring 15 of positioning seat 3 contacts with the picture paper, and increasing friction force in the process of drawing, can effectively avoid positioning seat 3 to be moved at the picture paper.
Matching relationship for backstay 2, adapter sleeve 7, spring 6 and hold-down bolt 8, also can adopt structure shown in Figure 3, the top of backstay 2 has a lateral dimension greater than the spacing ring 12 of 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 the 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 hold-down bolt 8 with backstay 2, reduce friction.
When using this hand-rail type without the cusp compasses, at first adjust the position height of main scale 9 on main body bar 1 by the clamping screw II, by the compressive pre-stress of hold-down bolt 8 adjustment springs 6, adjust compasses supporting legs 11 apart from the distance between the 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 that the center of circle, another hand only need rotating rocker 5 just can draw circle, and the lines that draw are continuous, even thickness, and can not misplace.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. hand-rail type is characterized in that without the cusp compasses: 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) and upward and with backstay (2) is slidingly matched, 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 the 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) and upward and with main body bar (1) is slidingly matched;
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 the adapter sleeve (7), and a side pressure of spring (6) is at the top of backstay (2), and the other end of spring (6) is pressed on the 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 an end of main scale (9) is connected with main body bar (1) and can be along the endwisely slipping 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 of the pencil-lead of can packing into.
2. hand-rail type according to claim 1 is characterized in that without the cusp compasses: an 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).
3. hand-rail type according to claim 1 is without the cusp compasses, it is characterized in that: the top of described backstay (2) has a lateral dimension greater than the spacing ring (12) of 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), and the other end of spring (6) is pressed on the hold-down bolt (8) by steel ball II (14).
According to claim 2 or 3 described hand-rail types without the cusp compasses, it 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).
According to claim 2 or 3 described hand-rail types without the cusp compasses, it is characterized in that: also comprise sleeve I (16), described sleeve I (16) is enclosed within main body bar (1) and upward and with main body bar (1) is slidingly matched, described sleeve I (16) is fixed on the main body bar (1) by the clamping screw I, and an end of main scale (9) is fixedly connected with sleeve I (16).
According to claim 2 or 3 described hand-rail types without the cusp compasses, it is characterized in that: also comprise sleeve II (17), described sleeve II (17) is enclosed within adapter sleeve (7) and upward and with adapter sleeve (7) is slidingly matched, sleeve II (17) is fixed on the adapter sleeve (7) by clamping screw II (18), and rocking bar (5) is fixed on the sleeve II (17).
According to claim 2 or 3 described hand-rail types without the cusp compasses, it is characterized in that: an end of described adapter sleeve (7) is connected to the top of main body bar (1) by the mode of threaded engagement.
According to claim 2 or 3 described hand-rail types without the cusp compasses, it is characterized in that: described slide measure (10) is fixed on the 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 true CN103009885A (en) | 2013-04-03 |
| CN103009885B CN103009885B (en) | 2014-12-10 |
Family
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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) |
Citations (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
Patent Citations (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 |
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| Publication number | Publication date |
|---|---|
| CN103009885B (en) | 2014-12-10 |
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Granted publication date: 20141210 Termination date: 20151228 |
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