CN210821556U

CN210821556U - Sucker compasses

Info

Publication number: CN210821556U
Application number: CN201921521160.5U
Authority: CN
Inventors: 李知宸
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-06-23
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses a sucking disc compasses, including the compasses body, the compasses body is including the fixed adsorption equipment who is used for the accurate positioning centre of a circle, the rotatable part be connected with fixed adsorption equipment, with the scale that rotatable part is connected, the mapping instrument who is used for drawing the circle of being connected with the scale, fixed adsorption equipment include the sucking disc and set up at the scalable well core rod that sucking disc central point put, be provided with calibrated scale and size sign or angle sign on the sucking disc, the mapping instrument is including setting up mobilizable vernier cassette and the painting brush cutting ferrule of clamping in the vernier cassette on the scale. The utility model discloses simple structure, the sucking disc adsorbs can not remove easily, can carry out the accurate positioning centre of a circle, can keep the stability of fixed point at the in-process of drawing the circle, has overcome the problem that current sucking disc formula compasses can not the accurate positioning centre of a circle, and the circle of drawing the demand diameter that can be convenient, improves the efficiency of drawing the circle, realizes the rotation of compasses and angular adjustment's function.

Description

Sucker compasses

Technical Field

The utility model relates to a teaching tool field especially relates to a sucking disc compasses.

Background

Most compasses sold in the market at present are equipped with the fixed needle on one foot, be used as fixed centre of a circle, are equipped with carbon strip or chalk on the other foot and are used for marking off, and it is more convenient that this kind of compasses make a circle on paper or other soft plane, but when making a circle on smooth stereoplasm plane or under the condition that requires not harm the plane just inconvenient, have the one end of needle and remove easily at the drawing circle in-process, influence the efficiency of drawing a circle, need measure the diameter of circle with the help of other instruments, the drawing circle process is comparatively loaded down with trivial details. For example, when the compass is used on a whiteboard and a blackboard for teaching, the compass is easy to slip and damage, and cannot draw a picture by a line segment overlapping method, so that the demonstration teaching of drawing by a ruler and a compass can not be performed basically, the existing sucker type compass directly uses a sucker to replace a fixed needle and is used for fixing a circle center, and the other foot is provided with a carbon strip or a chalk.

The existing compasses are not suitable for teaching, are inconvenient to fix in the using process, cannot well provide a good using environment for a user, and cannot provide a good assistant for the user in the circle drawing process, so that the user has much inconvenience in the using process.

The patent number CN201811506241.8 discloses a can survey radial scale sucking disc teaching compasses, and this patent includes rubber suction cup, is connected with the location bearing on the rubber suction cup, and location bearing outer joint has the constant head tank, the constant head tank outer joint has the column spinner, the equal coincidence of axis of column spinner, location bearing and rubber suction cup, set up the mounting groove in the column spinner, and the embedding in the mounting groove is connected with the scale. This can survey radial scale sucking disc teaching compasses can keep the stability of fixed point at the in-process of drawing the circle, the condition of fixed point skew can not appear, and the circle of drawing the demand diameter that can be convenient improves the efficiency of drawing the circle.

Although the situation of fixed point skew in the drawing circle process has been solved to above-mentioned patent, above-mentioned patent can only use on the work object of leveling the material, and the sucking disc can only adsorb the approximate position that needs draw circle or arc, and unable accurate fixed point location circle or the center of drawing the arc can only be drawn the whole circle, and the number of degrees or the number of degrees of arc of unable accurate circle can not directly draw concentric circles and the circle of appointed radius, uses inconveniently.

For example, in the sucker compass with the patent number of 02211888.8, the sucker feet are arranged at the lower part of the central rod to form a lampshade-shaped integral structure, and the function is to play a role of skid resistance; the bolt I is arranged in the middle of the sleeve body and plays a role in fixing; the rotating shaft is arranged in the middle of the central rod to form a long integral structure, and the rotating shaft has the function of rotating. However, the sucker foot is in the shape of a lampshade, the circle center is difficult to accurately position, and the rotating shaft is in a strip-shaped integral structure and has the problem of inconvenient rotation. In addition, the utility model patent No. 01223552.0 has such problems.

The compasses which are widely adopted by people for a long time and are formed by cross and movable connection of a centering rod and a scribing rod, wherein an iron needle arranged at the tail end of the centering rod is used as the center of a circle to be scribed. However, when the surface of the drawn circular line is hard, such as a glass blackboard and other materials, the center of the circle is not accurately positioned due to the fact that the iron needle cannot be driven into the hard surface to slip, so that drawing is difficult or even impossible, and even when the surface of the drawn circular line is soft, the iron needle punctures the surface to leave a center pinhole.

Based on this, there is a need to research a sucker compass which is simple in structure and convenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the above problem that prior art exists, provide a sucking disc compasses, the utility model discloses simple structure, the stitch that has more in common compasses has better stability, and the sucking disc adsorbs can not remove easily, can carry out the accurate positioning centre of a circle, can keep the stability of fixed point at the in-process of drawing the circle, the condition of fixed point skew can not appear, has overcome the problem that current sucking disc formula compasses can not the accurate positioning centre of a circle, and the circle of drawing demand diameter that can be convenient, improve the circle efficiency of drawing, realize the rotation of compasses and angular adjustment's function.

For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:

the utility model provides a sucking disc compasses, includes the compasses body, the compasses body is including the fixed adsorption equipment who is used for the accurate positioning centre of a circle, the rotatable part who is connected with fixed adsorption equipment, the scale of being connected with rotatable part, the mapping instrument that is used for drawing a circle of being connected with the scale, fixed adsorption equipment include the sucking disc and set up at the scalable well core rod of sucking disc central point, scalable well core rod includes that a lower extreme is acicular location portion and an at least section upper end sealed cavity telescopic link, the axle center of cavity telescopic link is connected with rotatable parts's axle center, rotatable parts includes the bearing, be provided with calibrated scale and size sign or angle sign on the sucking disc, the mapping instrument is including setting up mobilizable vernier cassette and the painting brush cutting ferrule of painting brush clamping in vernier cassette on the scale.

Preferably, the positioning part comprises a positioning needle, the lower end of the positioning needle extends out of the horizontal plane of the lower edge of the sucker and is manufactured by adopting a transparent plastic injection molding process.

Preferably, the sucking disc is made of transparent rubber, and the dial is further provided with a pointer.

Preferably, the cavity telescopic link from the bottom up slides in proper order and nests in the cavity of last section, all installed the spring in the cavity, the upper end of location portion slide nestedly in the cavity of cavity telescopic link one section below, the cavity telescopic link of the top inlays and locates on the sucking disc.

Preferably, the painting pen clamping sleeve is provided with a tool for clamping the drawing, and the tool comprises a pen or a cutter.

Preferably, the painting brush cutting ferrule is made of transparent materials, and the axis of the painting brush cutting ferrule is parallel to the axis of the sucker.

Preferably, the sucker is one of a PVC plastic sucker or a magnetic sucker.

Preferably, the origin of the scale coincides with the central axis of the bearing and the sucker, and the bearing axis is perpendicular to the top surface of the scale.

The utility model has the advantages that:

1. the compasses can be better used, inconvenience can not be brought to a user, angle measurement can be more visually provided for the user, convenience is brought to the user, and the functions of rotation and angle adjustment of the compasses are realized.

2. The radius size of the drawn circle can be measured, the stability of the fixed point can be kept in the circle drawing process, the fixed point deviation can not occur, the circle with the required diameter can be conveniently drawn, and the circle drawing efficiency is improved;

3. the utility model discloses can make the teacher can adsorb the stitch that the sucking disc acted as common compasses on the blackboard and form the fixed point, and the sucking disc has better stability than the stitch of common compasses, and rubber suction cup adsorbs can not remove easily on the blackboard, and the process of making the drawing circle or drawing the arc is more convenient.

4. The circle center is accurately positioned, the sucker is pressed downwards, the positioning needle is completely retracted until the air in the sucker is exhausted, the sucker is stably adsorbed, then the compasses can be used, and the problem that the circle center cannot be accurately positioned by the existing sucker type compasses is solved.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to be implemented according to the content of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic structural diagram related to the present invention;

fig. 2 is a plan view according to the present invention.

The reference numbers in the figures illustrate: compasses body 1, fixed adsorption equipment 2, rotatable part 3, scale 4, mapping instrument 5, sucking disc 21, scalable well core rod 22, location portion 23, cavity telescopic link 24, size sign or angle sign 211, vernier cassette 51, painting brush cutting ferrule 52, removal through-hole 6.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals refer to like parts in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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 the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described herein as "exemplary" should not be construed as a more preferred or advantageous solution:

referring to fig. 1 to 2, the pair of sucker compasses comprises a compass body 1, wherein the compass body 1 comprises a fixed adsorption device 2 for accurately positioning the circle center, a rotatable part 3 connected with the fixed adsorption device 2, a graduated scale 4 connected with the rotatable part 3, and a drawing tool 5 connected with the graduated scale 4 and used for drawing circles, the fixed adsorption device 2 comprises a suction cup 21 and a telescopic central rod 22 arranged at the central position of the suction cup 21, the telescopic central rod 22 comprises a positioning part 23 with a needle-shaped lower end and at least one hollow telescopic rod 24 with a sealed upper end, the axis of the hollow telescopic rod 24 is connected with the axis of the rotatable part 3, the rotatable part 3 comprises a bearing, the sucking disc 21 is provided with a dial and a size mark or an angle mark 211, and the drawing tool 5 comprises a movable vernier clamping seat 51 arranged on the graduated scale 4 and a painting brush clamping sleeve 52 clamped in the vernier clamping seat 51.

The embodiment of the utility model provides an in, this structure user can adsorb sucking disc 21 on the blackboard and treat the centre of a circle department of drawing a circle fixed, the stitch that acts as common compasses forms the fixed point, in addition through painting brush cutting ferrule 52 with the chalk, carbon-point or whiteboard fix on scale 4 with drawing pens such as pen, sucking disc 21 has better stability than the stitch in common compasses, sucking disc 5 adsorbs can not remove easily on the blackboard, the user can compare scale 4 with scale 4 along the rotation with drawing required radial circle along the bearing, need not with the help of extra instrument, the process of making the drawing a circle is more convenient.

The vernier caliper 51 is further provided with a moving through hole 6, wherein the vernier caliper 51 moves along the outer wall of the scale 4 through the moving through hole 6, so as to change the distance between the vernier caliper 4 and the rotatable part 3.

The embodiment of the utility model provides an in, wherein, location portion 23 includes the pilot pin, and the lower extreme of pilot pin stretches out the lower border horizontal plane of sucking disc 21 adopts transparent plastic injection molding process to make, and the fixed point is done with the centre of a circle of waiting to draw the circle to the convenience.

The embodiment of the utility model provides an in, wherein, sucking disc 21 makes for transparent rubber material, still is provided with the pointer on the calibrated scale, and convenience of customers makes the circle or the arc of demand diameter according to calibrated scale and size sign or angle sign 211, improves the efficiency of drawing the circle or drawing the arc, and on the other hand can confirm whether the location portion of scalable well core rod 22 aims at the centre of a circle position of waiting to draw the circle.

The embodiment of the utility model provides an in, wherein, cavity telescopic link 24 from the bottom up slides in proper order nestedly in the cavity of last festival, has all installed the spring in the cavity, the upper end of location portion 23 slide nestedly in the cavity of cavity telescopic link 24 bottom one-tenth festival, the cavity telescopic link 24 of the top inlays and locates on the sucking disc 21, adopt this technical scheme, can make the stable absorption of sucking disc locate and fix in the centre of a circle department of waiting to draw the circle.

In the embodiment of the present invention, wherein, the painting brush cutting ferrule 52 is provided with a tool for clamping and drawing, the tool includes a pen or a cutter, and a user can mount a pencil, a chalk or a diamond cutter as required for drawing, teaching or glass cutting, etc.

The embodiment of the utility model provides an in, painting brush cutting ferrule 52 is made for transparent material, painting brush cutting ferrule 52 axis is parallel with sucking disc 21's axis, and various axis that makes the painting brush that inserts in painting brush cutting ferrule 52 with this structure also can be parallel with sucking disc 21 axis, makes the condition that the dislocation can not appear at rotatory in-process to the painting brush.

In the embodiment of the present invention, the suction cup 21 is a PVC plastic suction cup or a magnetic suction cup.

The embodiment of the utility model provides an in, the initial point of scale 4 and the coincidence of the central axis of bearing and sucking disc 21, and bearing axis and 4 top surfaces mutually perpendicular of scale. This structure makes scale 4 when rotatory along the bearing, and scale 4 can remain throughout with sucking disc 21 axis vertically state to keep between scale 4 and the sucking disc 21 and the difference in height is unchangeable, thereby makes the height of painting brush can not change.

The specific embodiment is as follows:

the utility model is not only simple in manufacture and low in cost, but also the function of drawing circles is not limited, and the utility model is suitable for various occasions, when the utility model is used on a smooth hard plane such as a white board or a blackboard, the vernier clamp seat is moved to a proper position on the graduated scale through the mobile through hole, then whether the scale on the graduated scale is the radius of the required circle is observed visually, then the tool for drawing is inserted into the drawing pen clamp seat, the sucking disc is fixed at the circle center of the circle to be drawn, the end of the positioning needle is used for accurately positioning the circle center, then the sucking disc is pressed downwards, the hollow telescopic rod retracts until the air in the sucking disc is emptied, the sucking disc is stably adsorbed on a working object, then the circle or arc is made according to the radius of the required circle, at the moment, the bearing is rotated, the painting brush in the drawing pen clamp seat can rotate along the bearing through the graduated scale, so that, thereby completing a series of works.

The utility model overcomes the problem that current sucking disc formula compasses can not the accurate positioning centre of a circle.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a sucking disc compasses which characterized in that: the compasses comprise a compasses body (1), the compasses body (1) comprises a fixed adsorption device (2) used for accurately positioning the circle center, a rotatable part (3) connected with the fixed adsorption device (2), a graduated scale (4) connected with the rotatable part (3), and a drawing tool (5) connected with the graduated scale (4) and used for drawing circles, wherein the fixed adsorption device (2) comprises a sucker (21) and a telescopic central rod (22) arranged at the central position of the sucker (21), the telescopic central rod (22) comprises a positioning part (23) with a needle-shaped lower end and at least one hollow telescopic rod (24) with a sealed upper end, the axis of the hollow telescopic rod (24) is connected with the axis of the rotatable part (3), the rotatable part (3) comprises a bearing, and the sucker (21) is provided with a dial and a size mark or an angle mark (211), the drawing tool (5) comprises a movable vernier clamping seat (51) arranged on the graduated scale (4) and a painting brush clamping sleeve (52) clamped in the vernier clamping seat (51).

2. The suction cup compass of claim 1, wherein: the positioning part (23) comprises a positioning needle, the lower end of the positioning needle extends out of the horizontal plane of the lower edge of the sucker (21), and the positioning part is manufactured by adopting a transparent plastic injection molding process.

3. The suction cup compass according to claim 2, wherein: the sucking disc (21) is made of transparent rubber materials, and a pointer is further arranged on the dial disc.

4. The suction cup compass of claim 1, wherein: cavity telescopic link (24) from the bottom up slides in proper order nestedly in the cavity of last section, the spring has all been installed in the cavity, the upper end of location portion (23) slide nestedly in the cavity of cavity telescopic link (24) the below one section, cavity telescopic link (24) the top inlay and locate on sucking disc (21).

5. The suction cup compass of claim 1, wherein: and a tool for clamping the drawing is arranged on the painting brush clamping sleeve (52), and the tool comprises a pen or a cutter.

6. The suction cup compass of claim 1, wherein: the painting brush cutting ferrule (52) is made of transparent materials, and the axis of the painting brush cutting ferrule (52) is parallel to the axis of the sucking disc (21).

7. The suction cup compass of claim 1, wherein: the sucker (21) is one of a PVC plastic sucker or a magnetic sucker.

8. The suction cup compass of claim 1, wherein: the original point of the graduated scale (4) is coincided with the central axes of the bearing and the sucker (21), and the axis of the bearing is perpendicular to the top surface of the graduated scale (4).