CN113059950A

CN113059950A - Accurate adjusting mechanism for compasses

Info

Publication number: CN113059950A
Application number: CN202110342401.5A
Authority: CN
Inventors: 张媛; 李静; 李海燕
Original assignee: Zhengzhou Railway Vocational and Technical College
Current assignee: Zhengzhou Railway Vocational and Technical College
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-07-02

Abstract

The invention discloses an accurate adjusting mechanism for compasses, which comprises a central support leg and a drawing rotating support leg, wherein the center of the central support leg is provided with a lifting adjusting component in a sliding manner, the lifting adjusting component comprises a positioning sleeve, the outer side of the positioning sleeve is provided with a positioning component fixed with the central support leg, and the other side of the positioning sleeve is provided with an L-shaped angle adjusting plate; the L-shaped angle adjusting plate comprises an arc angle adjusting plate; the angle modulation assembly is sleeved on the drawing rotating support leg and comprises a fixed sleeve, one side of the fixed sleeve is fixedly connected with the positioning slide block through a connecting rod, and the positioning slide block can be connected with the arc angle modulation plate in a sliding mode. The compass drawing device is reasonable and novel in design, and the lifting adjusting assembly can conveniently adjust the relative height of the drawing rotating support leg and the central support leg, so that the drawing radius of the compass is increased; the angle modulation subassembly can be convenient, the efficient adjusts and the fixed contained angle of drawing rotatory stabilizer blade and central stabilizer blade, avoids the rotatory stabilizer blade of drawing to change relative center stabilizer blade contained angle in the drawing process, reduces and draws the degree of difficulty.

Description

Accurate adjusting mechanism for compasses

Technical Field

The invention relates to the field of drawing tools, in particular to an accurate adjusting mechanism for compasses.

Background

Compasses are widely used as a drawing tool in the fields of junior high school students and planning and designing. The general compasses usually comprise a central support leg provided with a steel needle and a drawing rotating support leg provided with a pencil or a propelling pencil, wherein the central support leg and the drawing rotating support leg realize free opening and closing connection of the two support legs through a hinge part arranged at the upper end of the central support leg and the drawing rotating support leg, and a compass head for holding fingers is arranged on the hinge part.

When the compasses arranged conventionally draw a circle or an arc, the drawing rotating support leg is opened relative to the central support leg, the steel needle at the lower end of the central support leg is used as the support leg, and the drawing can be completed on a paper surface by revolving the pencil at the lower end of the drawing rotating support leg.

The existing compasses need to enable the hinge part to keep better balance and stability in the revolution process of the drawing rotating support leg in the operation process, namely, extra force is used for maintaining the stability of the hinge part in the drawing process, so that the included angle between the drawing rotating support leg and the central support leg in the drawing process can not be changed. However, the existing compasses cannot well realize stable included angle between the drawing rotating support leg and the central support leg in drawing, and the drawing of the compasses needs to be controlled by matching among a plurality of fingers, so that the operation is difficult for disabled persons or students with small palms, and even for adults, the compasses also need to have higher technical requirements; especially, when drawing a small circle or a large radius circle or a circular arc, the included angle between the drawing rotation support leg and the central support leg is difficult to control. In addition, the position of center stabilizer blade and the rotatory stabilizer blade of drawing is nonadjustable between the axial in the compasses of conventional setting, even set up adjustable fixed pencil fixed part on the rotatory stabilizer blade of drawing, can not solve center stabilizer blade and the rotatory stabilizer blade relatively fixed's of drawing problem well to make the radius that the compasses were painted circle or circular arc receive big restriction, the radius of drawing that also is the compasses has received big restriction, the suitability of compasses has been reduced, join in marriage to be equipped with a plurality of compasses in order to solve these problems.

Therefore, it is desirable to provide a fine adjustment mechanism for compasses that overcomes the above problems.

Disclosure of Invention

In order to solve the above problems, an embodiment of the present invention provides an accurate adjustment mechanism for compasses, and the purpose of the present invention is achieved by the following technical solutions:

an accurate adjusting mechanism for compasses comprises a central support leg and a drawing rotating support leg;

the central supporting leg and the drawing rotating supporting leg are rod-shaped pieces;

a lifting adjusting component is arranged in the center of the central support leg in a sliding manner and comprises a positioning sleeve, a positioning component fixed with the central support leg is arranged on the outer side of the positioning sleeve, and an L-shaped angle adjusting plate is arranged on the other side of the positioning sleeve;

the L-shaped angle adjusting plate comprises a connecting piece and an arc angle adjusting plate which is perpendicular to the connecting piece;

the angle adjusting assembly is fixedly sleeved on the drawing rotating support leg and comprises a fixed sleeve, one side of the fixed sleeve is rotatably connected with a connecting rod, the other end of the connecting rod is fixedly connected with a positioning sliding block, and the positioning sliding block can be in sliding connection with the arc angle adjusting plate.

Furthermore, concave planes are arranged on opposite sides of the outer circumference of the central support leg, a first scale mark is arranged in the concave plane on one side of the central support leg along the height direction, and a plurality of positioning holes are arranged in the concave plane on the other side of the central support leg at equal intervals along the height direction; the lower end of the central support leg is provided with a steel needle in a clamping manner.

Furthermore, a fixed end is arranged on one side of the positioning sleeve corresponding to the positioning assembly, a positioning pin through hole is formed in the fixed end along the axis, and a cover body step is arranged at the outer end of the foreign language positioning pin through hole of the fixed end;

the positioning assembly comprises a closed end cap arranged corresponding to the step of the cover body, a positioning pin penetrates through the center of the closed end cap, a check ring is arranged at one end of the positioning pin, a compression spring is arranged on the positioning pin between the check ring and the closed end cap, and a spring support sleeve is arranged on the inner side of the closed end cap and corresponds to the compression spring;

the front end of the positioning pin is inserted into the positioning hole, the outer end of the positioning pin is provided with a picking cap, and the positioning pin can be separated from the positioning hole by shifting the picking cap.

Furthermore, one side of the positioning sleeve corresponding to the first scale mark is provided with a second observation hole.

Furthermore, an arc guide groove is formed in the inner side of the arc angle adjusting plate along the length direction, and a scale mark II is arranged along the upper edge of the arc angle adjusting plate;

the inner side of the positioning slide block is provided with an arc chute opening corresponding to the arc angle adjusting plate, and the inner wall of the positioning slide block is provided with a connecting screw rod corresponding to the arc guide groove;

a closed end cover is arranged at the outer end of the positioning slide block, a pressing block position hole is formed in the center of the closed end cover and corresponds to the connecting screw rod, a positioning pressing block is arranged in the pressing block position hole, and the width or the diameter of the positioning pressing block is larger than the width of the arc-shaped sliding groove;

the outer side of the positioning pressing block is provided with a screwing piece connected with the connecting screw rod, and the screwing piece can press the positioning pressing block on the outer side wall of the arc-shaped sliding groove.

Furthermore, an observation hole I is formed in the side wall of the positioning sliding block corresponding to the scale mark II.

Compared with the prior art, the embodiment of the invention at least comprises the following beneficial effects:

1. the compasses drawing radius is increased, and the drawing requirements of circles with different diameters are met; in addition, the angle adjusting assembly arranged by matching the L-shaped angle adjusting plate connected with the lifting adjusting assembly can conveniently and efficiently adjust the included angle between the drawing rotating support leg and the central support leg, and the included angle between the central support leg and the drawing rotating support leg forms a stable structure, so that the phenomenon that the included angle of the drawing rotating support leg relative to the central support leg is changed in the drawing process to cause circle drawing errors is avoided, and the drawing difficulty is reduced;

2. the lifting adjusting component can slide up and down along the central support leg and is fixedly positioned with the central support leg through the positioning component, so that the relative lifting of the drawing rotating support leg relative to the central support leg is realized through the matching of the L-shaped angle adjusting plate and the angle adjusting component; the positioning assembly can conveniently realize the separation and fixation of the lifting adjusting assembly and the central support leg, so that the convenience and the practicability of the operation of the compasses are improved;

3. the angle adjusting assembly can conveniently realize that the positioning slide block slides along the outer side of the arc-shaped angle adjusting plate through loosening the tightening piece, so that the positioning slide block drives the drawing rotating support leg and the central support leg to conveniently adjust the included angle.

Drawings

FIG. 1 is a schematic view of a first perspective three-dimensional structure of a compass according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a second perspective of the compass according to the embodiment of the present invention;

FIG. 3 is a schematic structural view of a connection state of an angle adjusting assembly and a lifting adjusting assembly according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an angle adjusting assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of a first perspective structure of a lift adjustment assembly according to an embodiment of the present invention;

FIG. 6 is a schematic view of a second perspective structure of the lift adjustment assembly according to the embodiment of the present invention;

fig. 7 is a schematic perspective view of a center leg according to an embodiment of the invention.

In the figure:

100. compasses; 110. a central leg; 111. marking a first scale; 112. a steel needle; 113. a concave plane; 114. positioning holes; 120. drawing rotation support legs;

130. an angle adjusting component; 131. fixing the sleeve; 132. a connecting rod; 133. positioning the sliding block; 134. an arc-shaped chute; 135. connecting a screw rod; 136. closing the end cap; 137. pressing block position holes; 138. positioning a pressing block; 139. a tightening member; 1310. a first observation hole;

140. a lift adjustment assembly; 141. positioning the sleeve; 142. a positioning assembly; 1421. picking a cap; 1422. closing the end cap; 1423. a compression spring; 1424. positioning pins; 1425. a retainer ring; 1426. a spring support sleeve; 143. a fixed end; 1431. a positioning pin passes through a hole; 1432. a cover body step; 144. a second observation hole; 145. an L-shaped angle adjusting plate; 146. an arc-shaped guide groove; 147. an arc-shaped angle adjusting plate; 148. a second scale mark; 149. a sliding cavity.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Example (b):

referring to fig. 1 to 7, the present invention discloses a precise adjustment mechanism for compasses, the compasses 100 comprise a central support leg 110 and a drawing rotation support leg 120; the central support leg 110 and the drawing rotation support leg 120 are rod-shaped members; the center of the central supporting leg 110 is slidably provided with a lifting adjusting component 140, the lifting adjusting component 140 comprises a positioning sleeve 141, and a sliding cavity 149 is arranged in the positioning sleeve; a positioning component 142 fixed with the central support leg is arranged on the outer side of the positioning sleeve, and an L-shaped angle adjusting plate 145 is arranged on the other side of the positioning sleeve 141; the L-shaped angle adjusting plate 145 comprises a connecting piece and an arc angle adjusting plate 147 which is perpendicular to the connecting piece; the angle adjusting component 130 is fixedly sleeved on the drawing rotation leg 120, the angle adjusting component 130 comprises a fixed sleeve 131, one side of the fixed sleeve 131 is rotatably connected with a connecting rod 132, the other end of the connecting rod is fixedly connected with a positioning slide block 133, and the positioning slide block can be slidably connected along the arc-shaped angle adjusting plate 147. The compasses drawing radius is increased, and the drawing requirements of circles with different diameters are met; in addition, the contained angle of rotatory stabilizer blade of drawing and the contained angle of central stabilizer blade can be adjusted to the angle modulation subassembly that the cooperation of the L type angle modulation board of being connected with lift adjustment assembly set up conveniently, the efficient to make contained angle form stable structure between central stabilizer blade and the rotatory stabilizer blade of drawing, avoid the rotatory stabilizer blade of drawing to change to central stabilizer blade contained angle in the drawing process, cause the circle to draw the error, and reduce and draw the degree of difficulty.

In one embodiment, referring to fig. 2 and 7, concave planes 113 are disposed on opposite sides of the outer circumference of the center leg 110, a scale mark 111 is disposed along the height direction in the concave plane on one side of the center leg, and a plurality of positioning holes 114 are disposed in the concave plane on the other side of the center leg at equal intervals along the height direction; the lower end of the central support leg is provided with a steel needle 112 in a clamping way. In the embodiment, the lifting adjusting component can slide up and down along the central support leg and is fixedly positioned with the central support leg through the positioning component, so that the relative lifting of the drawing rotating support leg relative to the central support leg is realized through the matching of the L-shaped angle adjusting plate and the angle adjusting component; the scale mark I can be convenient for observing the lifting size of the lifting adjusting component. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.

In a specific embodiment, referring to fig. 5 and 6, a fixed end 143 is disposed on one side of the positioning sleeve 141 corresponding to the positioning assembly, a positioning pin through hole 1431 is disposed along an axis in the fixed end 143, and a cover step 1432 is disposed at an outer end of the positioning pin through hole; the positioning assembly 142 comprises a closed end cap 1422 arranged corresponding to the step of the cover body, a positioning pin 1424 penetrates through the center of the closed end cap, a retainer ring 1425 is arranged at one end of the positioning pin, a compression spring 1423 is arranged between the retainer ring and the closed end cap on the positioning pin, and a spring support sleeve 1426 is arranged on the inner side of the closed end cap corresponding to the compression spring; the front end of the positioning pin is inserted into the positioning hole 114, the outer end of the positioning pin is provided with a picking cap 1421, and the positioning pin can be separated from the positioning hole by shifting the picking cap 1421. In this embodiment, the locating component can be convenient the realization lift adjustment subassembly with the separation and the fixed of center stabilizer blade, improved the convenience and the practicality of compasses operation. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.

In one embodiment, a second observation hole 144 is formed on one side of the positioning sleeve 141 corresponding to the first scale mark; the precision positioning observation of the first scale mark can be clearly and conveniently realized through the second observation hole. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.

In a specific embodiment, referring to fig. 3 and 4, an arc-shaped guide groove 146 is formed along the length direction inside the arc-shaped angle-adjusting plate 147, and a scale mark two 148 is formed along the upper edge of the arc-shaped angle-adjusting plate 147; the inner side of the positioning slide block 133 is provided with an arc chute 134 opening corresponding to the arc angle adjusting plate, and the inner wall of the positioning slide block is provided with a connecting screw 135 corresponding to the arc guide groove; a closed end cover 136 is arranged at the outer end of the positioning sliding block, a pressing block position hole 137 is formed in the center of the closed end cover and corresponds to the connecting screw rod, a positioning pressing block 138 is arranged in the pressing block position hole, and the width or the diameter of the positioning pressing block is larger than the width of the arc-shaped sliding groove; the outside of the positioning pressing block is provided with a screwing piece 139 connected with the connecting screw rod, and the screwing piece can press the positioning pressing block on the outer side wall of the arc-shaped sliding groove. In this embodiment, realize that the location slider that can be convenient through the elasticity piece of screwing slides along the arc angle modulation board outside to drive the convenient adjustment of contained angle between rotatory stabilizer blade of drawing and the central stabilizer blade through the location slider, it is convenient, stable that the slip between the location slider of this kind of setting and the arc angle modulation board, and the fixed connection of contained angle between realization center stabilizer blade that can be firm and the rotatory stabilizer blade of drawing, avoid drawing the relative central stabilizer blade of rotatory stabilizer blade and take place the dislocation at the circle in-process, influence circle drawing effect. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.

In a specific embodiment, a first observation hole 1310 is disposed on the sidewall of the positioning slider 133 corresponding to the second scale mark; the second scale mark can be clearly and conveniently observed in a positioning mode with precision through the observation hole. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the embodiments in the present specification are all described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the device and system embodiments, since they are basically similar to the method embodiments, the description is simple, and for the relevant points, referring to the partial description of the method embodiments, it is sufficient that the components indicated as units may or may not be physical units, that is, may be located in one place, or may not be divided into a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. Can be understood and implemented by those skilled in the art without inventive effort.

The above description is only one specific implementation method of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The accurate adjusting mechanism for the compasses is characterized by comprising a central support leg (110) and a drawing rotating support leg (120);

the central supporting leg (110) and the drawing rotating supporting leg (120) are rod-shaped pieces;

a lifting adjusting component (140) is arranged in the center of the central support leg (110) in a sliding mode, the lifting adjusting component (140) comprises a positioning sleeve (141), a positioning component (142) fixed with the central support leg is arranged on the outer side of the positioning sleeve, and an L-shaped angle adjusting plate (145) is arranged on the other side of the positioning sleeve (141);

the L-shaped angle adjusting plate (145) comprises a connecting piece and an arc angle adjusting plate (147) which is perpendicular to the connecting piece;

the angle adjusting assembly (130) is fixedly sleeved on the drawing rotating support leg (120), the angle adjusting assembly (130) comprises a fixed sleeve (131), one side of the fixed sleeve (131) is rotatably connected with a connecting rod (132), the other end of the connecting rod is fixedly connected with a positioning sliding block (133), and the positioning sliding block can be in sliding connection with the arc angle adjusting plate (147).

2. The precise adjusting mechanism for compasses according to claim 1, wherein, the opposite side of the outer circumference of said central leg (110) is provided with a concave plane (113), a graduation mark I (111) is arranged in the concave plane at one side of said central leg along the height direction, and a plurality of positioning holes (114) are arranged in the concave plane at the other side of said central leg at equal intervals along the height direction; the lower end of the central supporting leg is provided with a steel needle (112) in a clamping way.

3. The precise adjusting mechanism for compasses according to claim 2, characterized in that one side of said positioning sleeve (141) is provided with a fixed end (143) corresponding to the positioning component, a positioning pin through hole (1431) is arranged in said fixed end (143) along the axial line, and the outer end of said fixed end foreign language positioning pin through hole is provided with a cover step (1432);

the positioning assembly (142) comprises a closed end cap (1422) arranged corresponding to the step of the cover body, a positioning pin (1424) penetrates through the center of the closed end cap, a retainer ring (1425) is arranged at one end of the positioning pin, a compression spring (1423) is arranged on the positioning pin between the retainer ring and the closed end cap, and a spring support sleeve (1426) is arranged on the inner side of the closed end cap corresponding to the compression spring;

the front end of the positioning pin is inserted into the positioning hole (114), a picking cap (1421) is arranged at the outer end of the positioning pin, and the positioning pin can be separated from the positioning hole by shifting the picking cap (1421).

4. The precise adjusting mechanism for compasses according to claim 3, wherein a second observation hole (144) is arranged on the side of said positioning sleeve (141) corresponding to the first scale mark.

5. The precise adjusting mechanism for compasses according to claim 1, wherein an arc-shaped guide groove (146) is provided along the length direction inside said arc-shaped angle adjusting plate (147), and a scale mark two (148) is provided along the upper edge of said arc-shaped angle adjusting plate (147);

the inner side of the positioning slide block (133) is provided with an opening of an arc chute (134) corresponding to the arc angle adjusting plate, and the inner wall of the positioning slide block is provided with a connecting screw rod (135) corresponding to the arc guide groove;

a closed end cover (136) is arranged at the outer end of the positioning sliding block, a pressing block position hole (137) is formed in the center of the closed end cover and corresponds to the connecting screw rod, a positioning pressing block (138) is arranged in the pressing block position hole, and the width or the diameter of the positioning pressing block is larger than the width of the arc-shaped sliding chute;

the outside of the positioning pressing block is provided with a screwing piece (139) connected with the connecting screw rod, and the screwing piece can press the positioning pressing block on the outer side wall of the arc-shaped sliding groove.

6. The fine adjustment mechanism for compasses of claim 5, wherein said positioning slide (133) has a first viewing hole (1310) on its upper side wall corresponding to said second scale mark.