CN112776515B

CN112776515B - Compasses

Info

Publication number: CN112776515B
Application number: CN202010181958.0A
Authority: CN
Inventors: 黄其丰; 郑哲昌; 郑翔戎; 郭彦志
Original assignee: SDI Corp
Current assignee: SDI Corp
Priority date: 2019-11-01
Filing date: 2020-03-16
Publication date: 2022-12-09
Anticipated expiration: 2040-03-16
Also published as: JP2021070312A; CN112776515A; TWI715452B; TW202118647A; JP6906086B2

Abstract

A compasses is provided with an outer cover, a movable device, two support legs and an operating part, wherein a limit hole penetrates through the top of the outer cover, the movable device can move up and down relative to the outer cover and is provided with a first axis, a combination part and two connecting parts, the two connecting parts are respectively positioned at two sides of the first axis, the two support legs can be combined with the outer cover in a relatively opening and closing manner and can be respectively and rotatably combined with the two connecting parts, the operating part is provided with a length direction and is provided with a combination end, an operating end and a limit part positioned between the two ends, the combination end can be rotatably combined with the combination part, the operating end is positioned outside the limit hole, the operating part can swing by taking the combination end as a fulcrum, and the movable device is linked to drive the operating part to move up and down relative to the outer cover along the length direction through opening and closing of the two support legs.

Description

Compasses

Technical Field

The invention relates to compasses, in particular to the compasses capable of being stably rotated for use.

Background

The compasses are one of stationery capable of providing users with drawing circular or arc lines, but the general compasses need to rotate by fingers when being operated, and the whole hand can also rotate along with the compasses, so that the compasses are not easy to balance, and the compasses are easy to accidentally drop off the hand, so that the compasses are inconvenient to use.

Further, the compass of japanese patent No. 5620842 discloses an operating structure capable of being held pivotally for use, but when the compass is used for drawing a circle with a small radius, the operating structure is very difficult to operate because the operating structure is free to swing and the user cannot stably rotate the compass, and thus the compass needs to be improved.

Disclosure of Invention

Therefore, in order to solve the problems that the existing compasses are not easy to operate and can not quickly adjust the deflection operating angle according to the radius requirement so as not to easily draw large and small circles, the invention provides the compasses, which can freely select the deflection operating range to draw circles, and the deflection operating angle can be automatically adjusted along with the opening angle of the support legs so as to easily draw the circles with different required radii, thereby effectively improving the problems.

Based on the above object, the present invention provides a compass, comprising:

the top of the outer cover is provided with a limiting hole in a penetrating way;

the movable device is provided with a first axis, the movable device is provided with a combination part and two connecting parts, the combination part is positioned at the top of the movable device, the two connecting parts are respectively positioned at two sides of the first axis, and the movable device can move up and down relative to the outer cover;

two support legs which can be combined with the outer cover in a relatively opening and closing manner and can be respectively combined with the two connecting parts of the movable device in a rotating manner; and

an operating part, it has a length direction, the operating part has a binding end and an operation end far away from each other along the length direction, there is a spacing department between the binding end and the operation end, the operation end locates at the outside of the spacing hole of the outer cover, the binding end of the operating part is combined with the binding part of the mobile device rotatably, make the operating part can use the binding end as the fulcrum to swing, and through the opening and closing of the two feet, the mobile device of the interlock drives the operating part and reciprocates relative to the outer cover along the length direction.

By the technical means, the compasses have the advantages and the effects that:

1. the compasses provided by the invention are selectively limited relative to the outer cover through the operating piece, so that a user can freely select the deflection operating range to operate the compasses, large circles or small circles can be drawn quickly and easily, and the diversity and the practicability of the compasses in operation are greatly improved.

2. The compasses can be lengthened along with the increase of the radius of the circle/arc of the two legs through the length of the operating part protruding out of the limiting hole, so that the swinging angle of the operating part can be automatically adjusted to be enlarged along with the increase of the radius of the circle/arc of the two legs.

Drawings

FIG. 1 is a perspective view of a compass in accordance with a first preferred embodiment of the present invention.

FIG. 2 is an exploded perspective view of a first preferred embodiment of the compass of the present invention.

FIG. 3 is a further exploded perspective view of the compass in accordance with the first preferred embodiment of the present invention.

FIG. 4 is a side view, partly in section, of a first preferred embodiment of the compass of the present invention.

FIG. 5 is a partially enlarged exploded perspective view of a first preferred embodiment of the compass of the present invention.

FIG. 6 is a side view, partly in section, of the first preferred embodiment of the compass of the present invention in use.

FIG. 7 is another side view, partly in section, of the compass of the first preferred embodiment of the present invention in use.

FIG. 8 is a perspective view of a second preferred embodiment of the compass of the present invention.

FIG. 9 is an exploded perspective view of a second preferred embodiment of the compass of the present invention.

FIG. 10 is a side view, partly in section, of a second preferred embodiment of the compass of the present invention.

FIG. 11 is a side view, partly in section, of a second preferred embodiment of the compass of the present invention.

FIG. 12 is another side view, partly in section, of the compass of the second preferred embodiment of the present invention.

FIG. 13 is a perspective view of a third preferred embodiment of the compass of the present invention.

FIG. 14 is an exploded perspective view of a third preferred embodiment of the compass of the present invention.

FIG. 15 is a side view, partly in section, of a third preferred embodiment of the compass of the present invention.

FIG. 16 is a side view, partly in section, of a third preferred embodiment of the compass of the present invention.

FIG. 17 is another side view, partly in section, of the compasses of the third preferred embodiment of the present invention in use.

FIG. 18 is a perspective view of a compass in accordance with a fourth preferred embodiment of the present invention.

FIG. 19 is an exploded perspective view of a fourth preferred embodiment of the compass of the present invention.

FIG. 20 is a side view showing the appearance of a compass in accordance with a fourth preferred embodiment of the present invention.

FIG. 21 is a side view, partially in section, of a fourth preferred embodiment of the compass of the present invention.

FIG. 22 is a side view, partly in section, of a fourth preferred embodiment of the compass of the present invention.

FIG. 23 is another side view, partly in section, of the compass of the fourth preferred embodiment of the present invention in use.

FIG. 24 is a schematic view showing a part of the compass in accordance with the fourth preferred embodiment of the present invention.

FIG. 25A is an exploded perspective view of another aspect of the compass in accordance with the fourth preferred embodiment of the present invention.

FIG. 25B is an enlarged perspective view of a connecting rod in another aspect of the fourth preferred embodiment of the compass of the present invention.

FIG. 26 is a sectional side view of another aspect of the fourth preferred embodiment of the compass of the present invention.

FIG. 27 is a perspective view of the compasses of the fifth preferred embodiment of the present invention.

FIG. 28 is an exploded perspective view of a fifth preferred embodiment of the compass of the present invention.

FIG. 29 is a side view in cross-section of a fifth preferred embodiment of the compass of the present invention.

FIG. 30 is a side view, partially in section, of a fifth preferred embodiment of the compass of the present invention in use.

FIG. 31 is another side view, partly in cross-section, of the compass of the fifth preferred embodiment of the present invention in use.

FIG. 32 is a perspective view of a compass in accordance with a sixth preferred embodiment of the present invention.

FIG. 33 is an exploded perspective view of a sixth preferred embodiment of the compass of the present invention.

FIG. 34 is a sectional side view of a sixth preferred embodiment of the compass of the present invention.

FIG. 35 is a cross-sectional side view of the compass according to the sixth preferred embodiment of the present invention.

FIG. 36 is another side view, in cross section, of a sixth preferred embodiment of the compass of the present invention.

FIG. 37 is a partially enlarged perspective view of a seventh preferred embodiment of the compass.

Detailed Description

So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings, wherein:

the present invention provides a compass, which is referred to the first preferred embodiment shown in fig. 1 to 4, and comprises a movable device 10, two support legs 20, an operating member 30 and a cover 40.

The mobile device 10 is disposed in the cover 40 and can move up and down relative to the cover 40, the mobile device 10 has a longitudinal first axis C ₁ And is provided with a combining portion 11 and two connecting portions 12, the combining portion 11 is located on the top of the movable device 10 and deviates from the first axis C ₁ The connecting portion 11 can be a concave portion or a convex portion, and the two connecting portions 12 are symmetrically located on the first axis C respectively ₁ Respectively, and respectively can be opposite to the first axis C ₁ The movable device 10 has two coupled half bodies 13, such that the coupling portion 11 is located between the two half bodies 13, and the two half bodies 13 are coupled by a plurality of concave-convex configured grooves 131 and convex columns 132, and further, each connecting portion 12 of the movable device 10 includes a coupling rod 14, and a portion of each coupling rod 14 away from the operating member 30 is a swinging end, and the two coupling rods 14 are located between the two half bodies 13. Preferably, the movable device 10 may be provided with a guiding structure toward the outside, and the outer cover 40 is correspondingly provided with a positioning structure toward the inside, so that when the movable device 10 moves up and down relative to the outer cover 40, the guiding structure can move along the positioning structure to improve the stability of the linear movement of the movable device 10, wherein the linear movement direction of the movable device 10 is along the first axis C ₁ (ii) a In an embodiment, the movable device 10 has two opposite outer sides, the guiding structure may have a guiding portion 15 on each of the two outer sides of the movable device 10, and each guiding portion 15 is located on the outer side of one of the half bodies 13 and is a strip rib.

The two legs 20 are combined with the outer cover 40 in a relatively openable and closable manner, and respectively combined with the two connecting portions 12 of the movable device 10 in a rotatable manner, the top of each leg 20 is provided with a pivot portion 21 and a common shaft portion 22, the pivot portion 21 is relatively located outside the common shaft portion 22 and is combined with one of the connecting portions 12 of the movable device 10 in a rotatable manner, further, the pivot portion 21 of each leg 20 is pivoted to the swinging end of one of the connecting rods 14 of the movable device 10, and the common shaft portions 22 of the two legs 20 are combined in an overlapping manner, so that the bottom ends of the two legs 20 can be relatively close to or far away from each other, and the two connecting portions 12 of the movable device 10 are matched with each other and combined with each other relative to the first axis C ₁ The symmetrical configuration and linear movement of the mobile device 10 allow the two legs 20 to be more precisely aligned with respect to the first axis C ₁ Opening or closing synchronously, i.e. with respect to the first axis C, of the two legs 20 ₁ The opening angle of the compass is constant, and the consistency can be maintained, so that the compass can stably rotate along the gravity center when in use.

The operation element 30 has a length direction, the operation element 30 is provided with a combining end 31 and an operating end 32 which are far away from each other along the length direction, a limiting part 33 is arranged between the combining end 31 and the operating end 32, the operating end 32 is positioned outside the outer cover 40, the combining end 31 of the operation element 30 is rotatably combined with the combining part 11 of the movable device 10, so that the operation element 30 can swing by taking the combining end 31 as a fulcrum, and further, when the combining part 11 is a concave part, the combining end 31 of the operation element 30 is a spherical body matched with the combining part 11 in shape; in addition, the limiting portion 33 can be a structural configuration in which the outer diameter gradually increases from the combining end 31 to the operating end 32, and the outer diameter of the limiting portion 33 near the operating end 32 is larger, so that higher rigidity can be provided, and the structural strength of the operating element 30 is prevented from being affected after multiple swinging uses; the outer diameter of the limiting portion 33 near the joint end 31 is smaller, and the volume of the joint portion 11 of the movable device 10 can be reduced in a matching manner, so that the overall volume of the movable device 10 can be reduced; wherein the operation end 32 can be formed as a block or plate with a larger volume for easy holding.

Further, referring to fig. 4, the first axis C of the movable device 10 ₁ Parallel to the length direction of the operating member 30, and the coupling end 31 of the operating member 30 has a second axis C parallel to the length direction of the operating member 30 ₂ The two central axes C ₁ ,C ₂ An eccentric distance E is formed between the two parts; still further, the pivot portion 21 of one of the legs 20 is opposite to the first axis C ₁ And is located at the second axis C ₂ The same side position is defined as an eccentric side leg, and the pivot portion 21 of the eccentric side leg 20 has a linear distance S with the common shaft portion 22, preferably, the eccentric distance E is smaller than or equal to the linear distance S, and more particularly, as shown in FIG. 4 and FIG. 5, the centers of the coaxial portions 22 of the two legs 20 are located on a first extending line P ₁ Upper, first extension line P ₁ To the first axis C ₁ Orthogonally, the center of the pivoting portion 21 of the eccentric side leg 20 is located on a second extension line P ₂ The first and second extension lines P ₁ ,P ₂ Is a parallel line, the linear distance S is the first extension line P ₁ And the first partTwo extension lines P ₂ The vertical distance therebetween. By the eccentric distance E being smaller than or equal to the linear distance S, in an ideal state, i.e., without considering a model or a volume, the coupling end 31 of the operating element 30 is located right above the pivot portion 21 of the eccentric side leg 20 to draw a circle for the easiest application of force; if the eccentric distance E exceeds the linear distance S, it is difficult to apply force when drawing a small circle. Still further, the two legs 20 are a stitch and a pen leg, respectively, and the combining end 31 of the operating element 30 is combined with the connecting portion 12 corresponding to the pen leg, that is, the eccentric side leg 20 is a pen leg.

The outer cover 40 is combined with the two supporting legs 20, the outer cover 40 has two opposite inner side surfaces and is provided with a fixing part 41 and a limiting hole 42, the fixing part 41 is arranged through the coaxial parts 22 of the two supporting legs 20, so that the two supporting legs 20 are combined with the outer cover 40, the limiting hole 42 penetrates through the top of the outer cover 40, the operating end 32 of the operating part 30 is positioned outside the limiting hole 42 of the outer cover 40, and the movable device 10 is linked along the first axis C through the opening and closing of the two supporting legs 20 ₁ To drive the operation element 30 to move up and down along the length direction thereof relative to the outer cover 40, so that the limit portion 33 of the operation element 30 can selectively contact with the limit hole 42 of the outer cover 40 when swinging; wherein the joint part 11 of the movable device 10 deviates from the first axis C ₁ And a second axis C linearly opposite to the limit hole 42 of the outer cover 40 ₂ And is coupled with the coupling end 31 of the operating member 30.

Further, as shown in fig. 2 and 3, in the case that the outer cover 40 is provided with a positioning structure corresponding to the guiding structure of the movable apparatus 10, the positioning structure is provided with two positioning portions 43 corresponding to the two guiding portions 15 respectively on the inner side surface of the outer cover 40, and each positioning portion 43 is combined with one of the guiding portions 15 of the movable apparatus 10, so that when the movable apparatus 10 opens along with the two legs 20, each guiding portion 15 can move along the corresponding positioning portion 43, thereby providing the guiding effect of linear up-and-down movement of the movable apparatus 10. In addition, the outer cover 40 may have two coupled half shells 44, and the two half shells 44 are coupled to the coaxial portions 22 of the two legs 20 through the fixing member 41.

In the compass of the first preferred embodiment of the present invention, when the two legs 20 are folded, the limiting portion 33 of the operating element 30 is immersed in the limiting hole 42 of the outer cover 40, and in use, referring to fig. 1 and 6, when a user opens the two legs 20, the two legs 20 will link the mobile device 10, so that the mobile device 10 drives the operating element 30 to move upward along the length direction of the operating element 30 relative to the outer cover 40, and further the limiting portion 33 of the operating element 30 gradually extends upward through the limiting hole 42 of the outer cover 40, and the swing angle of the operating element 30 is in positive correlation with the opening angle of the two legs 20, i.e., the length of the operating element 30 protruding from the limiting hole 42 of the outer cover 40 will become longer as the radius of the circle/arc drawn by the two legs 20 becomes larger, so that the length of the limiting portion 33 limited by the limiting hole 42 becomes shorter, and the swing angle of the operating element 30 becomes larger, and therefore, the compass can automatically adjust the swing angle of the operating element 30 according to the radius of the circle drawn by setting of the two legs 20, and the compass can provide a great convenience for the user to select a swing operation range of the compass.

Further, when the first preferred embodiment of the present invention is used, as shown in fig. 6, when the two legs 20 open at a small angle, the position of the operation element 30 limited in the outer cover 40 is more and can only swing with a very small amplitude, so that the operation element 30 can be regarded as a fixed mode relative to the outer cover 40, and a user can hold the operation element 30 to perform fixed circle drawing so as to draw a circle or an arc with a smaller radius; further, as shown in fig. 7, when the two legs 20 are opened to a large angle, the user can drive the two connecting rods 14 to drive the movable device 10 to move upward along the outer cover 40, each of the guiding portions 15 of the movable device 10 will move upward along the corresponding positioning portion 43 as shown in fig. 2 and 3, and further drive the operating element 30 to move upward relative to the outer cover 40, so that the length of the limiting portion 33 of the operating element 30 protruding out of the limiting hole 42 of the outer cover 40 is increased, and the pendulum of the operating element 30 is allowed to swing upwardThe dynamic angle is increased and can be relative to the first axis C ₁ The compasses can be tilted and freely swung, so that a user can tilt and swing the compasses to draw a circle or an arc with a larger radius by holding the operating piece 30. Wherein, the user can hold the outer cover 40 to draw a circle fixedly, especially to draw a small circle, the two half shells 44 can be optionally held, therefore, the first preferred embodiment of the present invention can draw a large circle or a small circle with various radii quickly and easily, and provide a diversified operation mode for the user, thereby effectively improving the practicability of the compass.

Still further, when the first preferred embodiment of the present invention is used, whether the radius of the circle drawn as shown in FIG. 6 is small or the radius of the circle drawn as shown in FIG. 7 is large, the second axis C of the coupling end 31 of the operating member 30 is ₂ To a first axis C of the mobile device 10 ₁ The compasses have a structural form with an eccentric distance E, so that the rotating moment arm of the compasses can be increased through the eccentric arrangement of the operating part 30 in the process of drawing circles, the rotating moment value can be increased, a user can more smoothly draw circles, and the effect of drawing large circles or small circles quickly and easily can be increased.

Please refer to fig. 8 to 10, which show a second preferred embodiment similar to the compass of the first preferred embodiment, and the difference is: the second preferred embodiment is not provided with the two connecting rods 14, and the movable device 10A is an elastic C-shaped structure, further, the movable device 10A can also be transformed from C into a geometrical shape with a notch, such as triangle, quadrangle or polygon, etc., and the position of each connecting portion 12A of the movable device 10A away from the operating element 30A is a swinging end, the top ends of the two legs 20A are rotatably combined with the swinging ends of the two connecting portions 12A, for example, the movable device 10A is an elastic C-shaped clamping structure, each swinging end of the movable device 10A is provided with a clamping portion 16A, and the top ends of the two legs 20A are pivotally combined and combined with the clamping portions 16A of the two connecting portions 12A of the movable device 10A, respectively.

When the compasses of the second preferred embodiment of the present invention are used, the two legs 20A are as followsAs shown in fig. 11, when the small angle is opened, the position of the position-limiting portion 33A of the operating element 30A is limited in the position-limiting hole 42A of the outer cover 40A, and only a very small swing can be performed, so that the operating element 30A can be regarded as a fixed mode relative to the outer cover 40A, and a user can hold the operating element 30A to perform a fixed circle drawing so as to draw a circle or an arc with a small radius; further, as shown in fig. 12, when the two legs 20A are opened to a large angle, the movable device 10A drives the operation element 30A to move upward relative to the outer cover 40A, so that the length of the limiting portion 33A of the operation element 30A protruding out of the limiting hole 42A of the outer cover 40A is increased and the limiting length is shortened, and the operation element 30A can move relative to the first axis C ₁ The compasses of the second preferred embodiment of the invention can be obliquely and eccentrically drawn by holding the operating member 30A through tilting and freely swinging, so that the compasses can be conveniently drawn into circles or arcs with larger radius, diversified operating modes are provided for users, and the practicability of the compasses is effectively improved.

Please refer to the third preferred embodiment shown in fig. 13 to fig. 15, which is similar to the compasses of the first preferred embodiment in structure, and the difference is: the outer cover 40B is provided with a holding portion 45B extending along the length direction of the operation element 30B at the top, the holding portion 45B can limit the operation mode of the operation element 30B swinging freely relative to the outer cover 40B, the holding portion 45B can be integrated with one half of the shell 44B, the limiting hole 42B is formed in the holding portion 45B, the operation end 32B of the operation element 30B is positioned outside the holding portion 45B, so that the limiting portion 33B of the operation element 30B can be selectively contacted with the limiting hole 42B; further, the compass further comprises a cover 50B, and the cover 50B can be selectively combined with the bottoms of the two support legs 20B and the operating end 32B of the operating member 30B.

In the compass of the third preferred embodiment of the present invention, when the two legs 20B are folded, the limiting portion 33B of the operating element 30B is immersed in the limiting hole 42B of the outer cover 40B, and in use, referring to fig. 13 and fig. 16, when the user opens the two legs 20B, the two legs 20B will link the moving device 10B, so that the moving device 10B drives the operating element 30B to move upward along the length direction of the operating element 30B, and further the limiting portion 33B of the operating element 30B gradually extends upward through the limiting hole 42B of the outer cover 40B, and the swing angle of the operating element 30B is positively correlated to the opening angle of the two legs 20B, that is, the length of the operating element 30B protruding out of the limiting hole 42B of the outer cover 40B will become longer as the radius of the circle/drawing arc of the two legs 20B becomes larger, and further the swing angle of the operating element 30B is automatically adjusted to be larger, therefore, the compass of the third preferred embodiment of the present invention can adjust the radius of the circle/drawing arc of the two legs 20B, and the swing angle of the operating element 30B is automatically adjusted accordingly.

Further, when the third preferred embodiment of the present invention is used, as shown in fig. 16, when the two legs 20B open at a small angle, the position of the position-limiting portion 33B of the operating element 30B is limited in the holding portion 45B of the outer cover 40B, and only a very small swing is performed, so that the operating element 30B can be regarded as a fixed mode relative to the outer cover 40B, and a user can perform fixed circle drawing by holding the operating element 30B, so as to draw a circle or an arc with a small radius; further, as shown in fig. 17, when the two legs 20B are opened to a large angle, the user can drive the two connecting rods 14B to drive the movable device 10B to move upward along the outer cover 40B, and each of the guiding portions 15B of the movable device 10B can move upward along the corresponding positioning portion 43B as shown in fig. 14, so as to drive the operating element 30B to move upward relative to the outer cover 40B, so that the length of the limiting portion 33B of the operating element 30B protruding out of the limiting hole 42B of the outer cover 40B is increased, and the swing angle of the operating element 30B is increased to enable the operating element to swing relative to the first axis C ₁ The compass can tilt and swing freely, so that a user can tilt and swing the compass to draw a circle or an arc with a larger radius by holding the operating element 30B.

Please refer to fig. 14, wherein a first engaging structure 24B is disposed at a bottom of one of the legs 20B, a second engaging structure 34B is disposed at a position where the operating element 30B extends out of the holding portion 45B, and the cover 50B has a third engaging structure 51B, wherein the third engaging structure 51B can be engaged with the first engaging structure 24B or the second engaging structure 34B, so that the cover 50B is engaged with the two legs 20B or the operating element 30B; therefore, in addition to holding the operating end 32B of the operating element 30B to draw a circle, as shown in fig. 16 and 17, the cover 50B can be integrally operated with the operating element 30B by engaging the third engaging structure 51B with the second engaging structure 34B, so as to hold the cover 50B to draw a circle for the compass, thereby not only increasing the holding stability of the cover 50B during drawing a circle, but also covering the cover 50B on the bottom of the two support legs 20B when not used in a compass, thereby providing a protection effect.

Please refer to the fourth preferred embodiment shown in fig. 18 to fig. 21, which is similar to the compasses of the third preferred embodiment in structure, and the difference is: the movable device 10C and the coupling end 31C of the operating member 30C do not have an eccentric distance therebetween, i.e., the first axis C of the movable device 10C ₁ A second axis C of the coupling end 31C of the operating member 30C ₂ The two half bodies 13C of the mobile device 10C are combined by a plurality of concave-convex grooves 131c,131c 'and convex posts 132c,132c', and the two half shells 44C of the outer cover 40C have a combination hole 441C and a combination post 442C that can be combined with each other; furthermore, each half shell 44C is provided with a circular arc-shaped limiting section 443C at the lower half portion, so that when the outer cover 40C is combined with the two supporting legs 20C, the two limiting sections 443C can form a limiting space, thereby limiting the outward opening angle of the two supporting legs 20C relative to the outer cover 40C.

Further, referring to fig. 18 and 21, in a fourth preferred embodiment of the present invention, the position-limiting portion 33C of the operating element 30C has a first length L ₁ The holding portion 45C has a second length L ₂ The movable device 10C defines a maximum displacement D and the first length L ₁ Not less than the second length L ₂ And the sum of the maximum displacement D, i.e., L ₁ ≥L ₂ + D. In addition, a gap is formed between the limiting portion 33C of the operating element 30C and the inner wall of the holding portion 45C, and preferably, the gap is more than 0.05 millimeter (mm).

In the compass of the fourth preferred embodiment of the present invention, when the two legs 20C are folded, the limiting portion 33C of the operating element 30C is inserted into the limiting hole 42C of the outer cover 40C, and in use, referring to fig. 18 and 22, when the user opens the two legs 20C, the two legs 20C will link the movable device 10C, so that the movable device 10C drives the operating element 30C to move upward along the length direction of the operating element 30C relative to the outer cover 40C, and further the limiting portion 33C of the operating element 30C gradually extends upward through the limiting hole 42C of the outer cover 40C, and the swing angle of the operating element 30C is positively correlated with the opening angle of the two legs 20C, that is, the length of the operating element 30C protruding from the limiting hole 42C of the outer cover 40C will be increased along with the increase of the radius of the circle/arc drawn by the two legs 20C, and further the swing angle of the operating element 30C will be automatically adjusted accordingly, so that the radius of the operating element 20C can be adjusted automatically, and the problem that the swing radius of the operating element for the compass can be adjusted is not increased automatically, and the problem that the swinging radius of the existing compass can be provided is not increased. Referring to fig. 21 to 23, taking the gap between the limiting portion 33C of the operating element 30C and the top edge of the limiting hole 42C as 0.05 millimeter (mm) as an example, it is described that the longer the lifting distance of the operating element 30C is, the larger the deflection angle thereof is, for example: when the operating element 30C is lifted 2 millimeters (mm), it can deflect 1.36 degrees relative to the central axis of the limiting hole 42C; when the operating member 30C is lifted by 9 millimeters (mm), it can swing by 2.05 degrees with respect to the central axis of the stopper hole 42C.

Further, when the fourth preferred embodiment of the present invention is used, not only as shown in fig. 22, when the two legs 20C open at a small angle, the operating element 30C is limited in the holding portion 45C of the outer cover 40C, but also can swing only in a very small range, so that a user can hold the operating element 30C to perform a circle or arc drawing in a fixed manner, so as to draw a circle or arc with a small radius; further, as shown in fig. 23 and 24, when the two legs 20C are opened to a large angle, the user can drive the movable device 10C to move upward along the outer cover 40C by linking the two connecting rods 14C, and each of the guiding portions 15C of the movable device 10C moves upward along the corresponding positioning portion 43C as shown in fig. 19, and further drive the operating element 30C to move upward relative to the outer cover 40C, so that the length of the limiting portion 33C of the operating element 30C protruding out of the limiting hole 42C of the outer cover 40C is increased, the swing angle of the operating element 30C is increased, and the operating element can tilt and swing relative to the outer cover 40C, and the user can perform tilting and deflecting of the compass of the present invention to draw a circle or an arc with a larger radius by holding the operating element 30C. The user can hold the holding portion 45C to draw a circle in a fixed manner, and particularly can select to hold the holding portion 45C when drawing a small circle, so that the fourth preferred embodiment of the present invention can draw large circles or small circles with various radii quickly and easily, and provide a diversified operation manner for the user, thereby effectively improving the practicability of the compasses.

Still further, when the compass of the present invention is used, as shown in fig. 23 and 24, the limitation space formed by the limitation sections 443C of the two half shells 44C of the outer cover 40C can be used to limit the outward opening angle of the two legs 20C relative to the outer cover 40C, so as to effectively prevent the two legs 20C from exceeding the set opening angle.

In addition, when the operating element 30C is held and the compasses are rotated, the two feet 20C are symmetrically combined with the movable device 10C through the two connecting rods 14C, so that the compasses can rotate along the gravity center position of the compasses and can not deviate from the rotation and slip, and a user can stably rotate the compasses for use.

Referring to fig. 25A, 25B and 26, in a fourth preferred embodiment of the invention, an engaging structure 33C ' is further disposed on an outer surface of the limiting portion 33C of the operating element 30C adjacent to the operating end 32C, an outer diameter of the engaging structure 33C ' is larger than outer diameters of other portions of the limiting portion 33C, and a engaging depth is provided along a length direction of the operating element 30C, an outer surface of the engaging structure 33C ' is selected from at least one of a triangle, a polygon, a protruding tooth and a groove, and an inner circumferential surface matched with the engaging structure 33C ' of the operating element 30C is provided at a top end of the limiting hole 42C ' of the outer cover 40C, so that the limiting portion 33C of the operating element 30C can be selectively engaged with the limiting hole 42C ' of the outer cover 40C, when the two legs 20C are closed or opened, the engaging structure 33C ' of the limiting portion 33C is engaged with the limiting hole 42C ', thereby providing a circular mode, such that the swinging operation range of the operating element 30C is 0 degree, and the operating element 30C can be automatically lifted and the limiting structure 33C can be disengaged from the limiting hole 33C ' after the operating element is closed or opened; the stopper 33C has a uniform outer diameter from the lower surface of the engaging structure 33C' toward the coupling end 31C.

Moreover, the connecting rods 14C' of the movable device 10C are pivotally connected to the corresponding legs 20C at one end thereof in an elastically deformable and engageable manner; further, as shown in fig. 25B and 26, each of the connecting rods 14C 'has a first pivot end 141C' and a second pivot end 142C 'that are far away from each other, each of the first pivot ends 141C' has a through hole, each of the second pivot ends 142C 'has a groove 143C', so that the second pivot ends 142C 'have elasticity, and each of two opposite outer surfaces of the second pivot ends 142C' has a cylinder, the first pivot ends 141C 'of the two connecting rods 14C' are rotatably clamped between the two half bodies 13C of the movable device 10C, and the through holes of the first pivot ends 141C 'are linearly opposite to the grooves 131C' and the posts 132C 'of the two half bodies 13C to be combined, and the two second pivot ends 142C' of the two connecting rods 14C 'are elastically deformable to be respectively engaged with the pivot portions 21C at the top of the pivot legs 20C, so that the number of the second pivot ends 142C' is reduced relative to the post 21C of the outer surface, and the total pivot cost of the connecting rods 14C is reduced without the need for manufacturing the pivot legs 20C.

Please refer to the fifth preferred embodiment shown in fig. 27 to fig. 29, which is similar to the compasses of the fourth preferred embodiment in structure, and the difference is: the fifth preferred embodiment does not have the holding portion 45C as the fourth preferred embodiment, the position-limiting portion 33D of the operating element 30D is provided with a fastening structure adjacent to the operating end 32D, the outer diameter of the fastening structure is larger than the outer diameter of the other portions of the position-limiting portion 33D, and has a fastening depth along the length direction of the operating element 30D, the outer surface of the fastening structure is a polygon, preferably, the section of the fastening structure perpendicular to the length direction of the operating element 30D is a regular hexagon and is a hexagonal prism, and the non-fastening portion of the position-limiting portion 33D can also be matched to form a hexagonal pyramid shape; the limiting hole 42D penetrates the top of the outer cover 40D and has an inner circumferential surface matched with the engaging structure of the operating element 30D, so that the limiting portion 33D of the operating element 30D can be selectively engaged with the limiting hole 42D of the outer cover 40D along with the up-and-down movement of the operating element 30D.

When the compass of the fifth preferred embodiment of the present invention is used, when the two legs 20D are closed or opened at a small angle as shown in fig. 30, because the position-limiting portion 33D of the operation element 30D is engaged with the position-limiting hole 42D of the outer cover 40D, the operation element 30D is limited at the position-limiting hole 42D of the outer cover 40D, and does not swing rotationally relative to the outer cover 40D, so that a user can hold the operation element 30D to draw a circle or an arc with a small radius in a fixed manner; further, as shown in fig. 31, when the two legs 20D are opened to a large angle, and the two connecting rods 14D drive the two half bodies 13D to move upward along the outer cover 40D, the guiding portions 15D of the movable device 10D move upward along the corresponding positioning portions 43D as shown in fig. 28, and further drive the operating element 30D to stably move upward relative to the outer cover 40D, so that the engaging structure of the limiting portion 33D of the operating element 30D is disengaged from the limiting hole 42D of the outer cover 40D, the operating element 30D can tilt and swing freely relative to the outer cover 40D, and the user can tilt and swing the compass to draw a circle or arc with a larger radius by holding the operating element 30D, thereby providing a diversified operating manner for the user and effectively improving the practicability of the compass.

Please refer to the sixth preferred embodiment shown in fig. 32 to fig. 34, which is similar to the compasses of the fourth preferred embodiment in structure, and the difference is: the sixth preferred embodiment is not provided with the two connecting rods 14C, and the movable device 10E is an elastic C-shaped clamping structure, further, the movable device 10E can also be deformed into a geometrical shape such as a triangle, a quadrangle or a polygon with a notch by C, each connecting portion 12E of the movable device 10E is provided with a clamping portion 16E, each clamping portion 16E has two cylindrical bumps in a clamping shape, the top ends of the two supporting legs 20E are pivotally combined and respectively clamped and combined with the clamping portions 16E of the two connecting portions 12E of the movable device 10E, each supporting leg 20E is provided with a sleeved column 23E at the top end, the sleeved column 23E of each supporting leg 20E is sleeved between the two cylindrical bumps of each clamping portion 16E, so as to be clamped and combined with the clamping portion 16E of one connecting portion 12E of the movable device 10E; further, the position-limiting portion 33E of the operating element 30E is provided with an engaging structure, the engaging structure is a polygonal structure, and the position-limiting hole 42E is disposed at the top of the holding portion 45E and has an inner peripheral surface matched with the engaging structure of the operating element 30E in shape, so that the position-limiting portion 33E of the operating element 30E can be selectively engaged with the position-limiting hole 42E of the outer cover 40E.

When the compass of the sixth preferred embodiment of the present invention is used, when the two legs 20E are closed or opened at a small angle as shown in fig. 35, the position-limiting portion 33E of the operation element 30E and the position-limiting hole 42E of the outer cover 40E are engaged, so that the operation element 30E is positioned in the position-limiting hole 42E of the outer cover 40E, and does not swing relative to the outer cover 40E, so that a user can hold the operation element 30E to perform a fixed circle drawing, so as to draw a circle or arc with a smaller radius; further, as shown in fig. 36, when the two legs 20E are opened to a large angle, the movable device 10E drives the operating element 30E to move upward relative to the outer cover 40E, so that the engaging structure of the limiting portion 33E of the operating element 30E is disengaged from the limiting hole 42E of the outer cover 40E and is not engaged with the limiting hole, and the operating element 30E can tilt and swing freely relative to the outer cover 40E, so that the user can draw a circle or arc with a large radius by holding the operating element 30E to perform tilting deflection on the compass of the present invention, thereby providing a diversified operating mode for the user and effectively improving the practicability of the compass.

Please refer to the seventh preferred embodiment shown in fig. 37, which is similar to the compasses of the fifth preferred embodiment in structure, and the difference is: the engaging structure of the position-limiting portion 33F of the operating element 30F in the seventh preferred embodiment has a plurality of annularly arranged protruding teeth, and the position-limiting hole 42F of the outer cover 40F has a tooth profile matched with the engaging structure of the position-limiting portion 33F, so that the operating element 30F can form a fixed pattern or a swinging pattern relative to the outer cover 40F by engaging or disengaging the position-limiting portion 33F with the position-limiting hole 42F, and further a user can draw a circle in a fixed manner or an inclined manner as required, thereby providing different and diversified operating manners for the user, and effectively improving the practicability of the compass.

Through the technical means, the compasses move relative to the outer covers 40,40A,40B,40C,40D,40E and 40F through the operating parts 30,30A,30B,30C, 30E and 30F to be selectively limited, so that the deflection operating amplitude can be freely selected to draw circles, a user can freely select different fixed or inclined rotating modes to operate the compasses, a large circle or a small circle can be drawn quickly and easily, and the operation versatility and the practicability of the compasses are greatly improved; furthermore, the inclined type deflection circle drawing mode can lead the deflection operation angle to be automatically adjusted along with the radius of the drawn circle/arc by opening the two support legs 20,20A,20B,20C,20D and 20E, so that a user can easily draw circles/arcs with different radii according to the requirement; further, the two legs 20,20A,20B, 10C,10D, and 20E can be precisely positioned with respect to the first axis C by the structural configuration of symmetrical connection between the movable device 10,10B,10C,10D, and 10E and the two legs 20,20B,20C,20D, and 10E and the linear movement of the movable device 10,10B,10C,10D, and 10E, for example, by the two connecting rods 14, 10B, 10C', 14D arranged in symmetrical connection, or by the movable device 10A,10E of a C-clamp structure ₁ The compasses can rotate along the gravity center when in use, thereby providing a stable rotating use effect; furthermore, the eccentric arrangement of the operating parts 30,30A and 30B can increase the force arm of the compass rotation to increase the torque value of the rotation, so that a user can more smoothly perform the operation of drawing a circle and can also increase the effect of drawing a large circle or a small circle quickly and easily controlled; preferably, the spacing between the two legs 20C and 20D and the spacing between the spacing sections 443C and 443D of the two casing halves 44C and 44D can prevent the compasses from being damaged by mistake or carelessness of a user.

First axis C according to the invention ₁ Second axis C ₂ The

movable devices

10,10A,10B,10C,10D,10E, the

operation members

30,30A,30B,30C,30D,30E,30F are provided with a virtual reference line for defining the relative positional relationship of the relevant members, without limiting the overall shape of the

movable devices

10,10A,10B,10C,10D,10E and the

operation members

30,30A,30B,30C,30D,30E,30F to be completely symmetrical. For example, in the third embodiment, in order to strengthen the synchronous opening and closing of the two legs 20B, the two connecting portions (connecting rods 14B) of the movable device 10B are opposite to the first axis C ₁ Are symmetrically arranged, and the upper half of the movable device 10B for coupling with the operating member 30B is not opposite to the first axis C ₁ Is symmetrical.

It should be understood, however, that the description herein of specific embodiments is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. A compass, comprising:

an operating part, it has a length direction, this operating part is equipped with a binding end and an operation end that keep away from each other along this length direction, and be equipped with a spacing portion between this binding end and this operation end, this operation end is located the outside of the spacing hole of this enclosing cover, the binding end of this operating part rotationally combines with this binding part of this head, make this operating part can use this binding end to swing as the fulcrum, and through the opening and shutting of two these stabilizer blades, this head drive of interlock this operating part is moved about this enclosing cover along this length direction relatively.

2. The compass of claim 1, wherein the two connections of the movable means are symmetrically disposed about the first axis.

3. The compass of claim 1 wherein the movable assembly includes a guide structure disposed outwardly and a positioning structure disposed inwardly relative to the cover, such that the guide structure is movable along the positioning structure when the movable assembly moves upwardly and downwardly relative to the cover.

4. The compass of claim 1 wherein the limiting portion of the operating member has a configuration in which an outer diameter gradually increases from the engaging end toward the operating end.

5. The compasses of claim 1, wherein a holding portion extends from the top of the outer cover along the length of the operating member, the holding portion being capable of limiting the swinging movement of the operating member relative to the outer cover, the limiting hole being formed in the holding portion, the operating end of the operating member being located outside the holding portion.

6. The compasses of claim 5, wherein the position-limiting portion of the operating member has a first length, the holding portion has a second length, the movable device defines a maximum displacement, and the first length is not less than the sum of the second length and the maximum displacement.

7. The compass of claim 5, wherein a gap is formed between the limiting portion of the operating member and the inner wall of the holding portion, and the gap is greater than 0.05 mm.

8. The compasses of claim 1, wherein the outer surface of the limit portion of the operating member is further provided with a snap-fit structure, and the limit hole of the outer cover has an inner peripheral surface matched with the snap-fit structure of the operating member in shape, so that the limit portion of the operating member can be selectively snapped with the limit hole of the outer cover.

9. The compass of claim 8, wherein the engaging structure of the position-limiting portion has an outer surface selected from at least one of a triangle, a polygon, a tooth and a groove.

10. The compass of claim 1, wherein the outer cover has two combined half shells, each half shell of the outer cover has a position-limiting section at a lower half, and the two position-limiting sections can form a position-limiting space to limit an outward-opening angle of the two supporting legs relative to the outer cover.

11. The compass of claim 1 wherein the two connecting portions of the movable means are capable of swinging toward and away from each other relative to the first axis.

12. The compass of claim 11, wherein the two connecting portions of the movable device each further comprise a connecting rod capable of swinging, and the portion of each connecting rod away from the operating member is a swinging end, and the top of each supporting leg is pivotally connected to the swinging end of one of the connecting rods.

13. The compass of claim 12 wherein each connecting rod of the movable assembly has a first pivot end and a second pivot end spaced apart from each other, each of the second pivot ends having a groove for allowing the second pivot ends to be pivotally coupled to the tops of the two support legs in an elastically deformable manner.

14. The compass of claim 11, wherein the movable device is a resilient structure, and the connecting portion of the movable device is a swinging end away from the operating member, and the top ends of the two support legs are rotatably coupled to the swinging ends of the connecting portions.

15. The compass of claim 1 further comprising a cover selectively engageable with the base of the two legs and the operating end of the operating member.

16. The compass of any one of claims 1-15 wherein the attachment end of the operating member has a second axis parallel to the length of the operating member, the second axis being offset from the first axis.

17. The compass of claim 16, wherein the engaging portion of the movable assembly is offset from the first axis, is located on the second axis in a straight line opposite to the limiting hole of the outer cover, and engages with the engaging end of the operating member.

18. The compass of claim 16, wherein a pivot portion and a common shaft portion are disposed at the top of each of the legs, the pivot portion is located outside the common shaft portion and pivotally connected to one of the connecting portions of the movable device, the coaxial portions of the two legs are stacked and connected to each other, such that the center of each of the coaxial portions is located on a first extending line, the first extending line is orthogonal to the first axis, wherein the pivot portion of one of the legs is located at the same side of the second axis as the first axis and defines an eccentric side leg, and a linear distance exists between the pivot portion and the common shaft portion to which the eccentric side leg belongs, and the eccentric distance is smaller than or equal to the linear distance.

19. The compass of claim 17, wherein the two legs are a stitch and a pen leg, and the coupling end of the operating element is coupled to the connecting portion corresponding to the pen leg.

20. The compass of claim 1, wherein the top of each of the support legs has a pivot portion and a common shaft portion, the pivot portion is located at an outer side of the common shaft portion and pivotally connected to one of the connecting portions of the movable device, and the common shaft portions of the two support legs are stacked and connected.