CN216443370U - Electronic compasses - Google Patents

Abstract

The utility model discloses an electronic compass, which comprises a magnetic chassis, wherein a plurality of annular array support rods are fixedly connected to the upper surface of the magnetic chassis, the upper end of the supporting rod is fixedly connected with a circular sliding rail, the upper end of the circular sliding rail is provided with a long wood plate, the long wood board is fixedly connected with a speed reducing motor, the lower end of an output shaft of the speed reducing motor is connected with a coupler, the lower end of the coupler is connected with a customized steel shaft, the lower end of the customized steel shaft is fixedly connected with a sliding table module, sliding connection has the setting-out mechanism that is used for drawing a circle on the slip table module, and the compasses replace the entity main foot of traditional compasses with the laser pen projection, design into "Z style of calligraphy" again with vice foot and make the vice foot of compasses can coincide with the centre of a circle when initial measurement, eliminate the error that vice foot width and refill thickness brought, enlarged the radius scope that can draw the small circle simultaneously.

Description

Electronic compasses

Technical Field

The utility model relates to the field of engineering drawing, in particular to an electronic compass.

Background

With the rapid development of economic level, the quality of the study and life of the nation is continuously improved, and the study conditions of students are increasingly emphasized. Therefore, the defects of the stationery industry are found, the defects of the stationery have influence on the learning enthusiasm of students, and the creativity of the students is limited to a certain extent. Therefore, in order to improve the learning conditions of students, it is necessary to increase the research on learning stationery, and the development prospect is very broad.

The compasses are used as a basic drawing measuring tool and widely applied to the drawing surveying and mapping industry. Drawing is the basis for all workpiece processing, so drawing accuracy is of particular importance. However, in the drawing process, by using the ordinary compasses to draw, several errors cannot be avoided:

1. the pencil core has thickness, and when the radius is got to ordinary compasses manual work on the ruler, error that the pencil core thickness caused can not avoid. When drawing small circles, the error is particularly obvious.

2. The common compasses move by means of gear engagement, under the condition of continuous opening and closing, the gear engagement becomes unreliable, the looseness is caused, and the radius is changed when a circle is drawn.

3. The compass is difficult to be used for accurate measurement, has no electromagnet fixing device, and when drawing a small circle, the compass is in a small-angle state, so that not only the circle is drawn to be limited, but also the radius is easy to change.

At present, compasses on domestic and foreign markets are various in types, but the basic principles are the same as each other: the traditional compasses generally comprise two feet, a steel needle for installation and positioning is arranged on one foot, a pencil, a ball-point pen and the like are arranged on the other foot for drawing, and the two feet are connected through a rotating shaft, so that the distance between the two feet can be adjusted within a certain range to make circles with different sizes. This configuration has a number of disadvantages, it can only draw a circle, and it cannot draw a circle of a certain radius. We have both studied rule-drawing-for a circle of known diameter, we first measure a certain dimension on a ruler with compasses and then draw through the dimension fixed by the compasses. However, this is undoubtedly a lagging practice, and investigation shows that most students have the phenomenon of wasting a lot of time when drawing by over-sizing, which is not only troublesome, but also affects the drawing state, and causes bad emotions such as dysphoria, thereby leading to an increase of error rate during drawing. Meanwhile, the secondary measurement by using ruler-compass drawing can increase data errors and cause a lot of adverse effects on laboratories or actual engineering drawings. The novel electronic compass changes the triangular structure of the traditional compass into a right-angle design, a supporting rod which is perpendicular to the compass and provided with a groove is connected to a main foot fixed by the compass, a sliding block is arranged on the supporting rod and is parallel to an auxiliary foot of the main foot, and finally an intelligent distance measuring sensor is arranged outside the main foot of the compass and measures the distance between the main foot and the auxiliary foot in real time. In practical application, the distance between the auxiliary foot and the main foot can be changed by manually sliding the sliding block, and the radius of the compasses in the debugging process is read by the sensor until the radius of the circle required by drawing is adjusted. The upper limit of the radius of the compass which can be made is determined by the length of the groove in the support rod. This compasses not only utilizes infrared ray range finding to get rid of the error of thickness when the radius is got to ordinary compasses volume and makes the precision higher, changes the radial mode of traditional compasses change into limitation and the precision problem of sliding block optimization compasses when drawing little circle by the change angle more, has still increased the error that electromagnet fixing device caused because of becoming flexible when preventing to draw. However, the electronic compasses still need manual drawing, and the inconvenience in the drawing process is greatly increased due to the design of the right-angle structure, the triangular structure design of the traditional compasses can enable a user to fix paper with one hand and easily draw by independently controlling the joint of two legs with the other hand, when the electronic compass draws a larger circle, the drawing task is difficult to be completed by one hand, the design of the right-angle structure causes uneven stress on the main leg and the auxiliary leg, when the subsidiary foot is far away from the main foot, the force applied by the hand near the main foot cannot control the movement of the subsidiary foot well, namely, the main foot and the auxiliary rotating foot are difficult to be fixed simultaneously by one hand, if the main foot and the auxiliary rotating foot are fixed simultaneously by two hands, the paper needs to be fixed by other articles, the drawing process is laborious, the experience is poor, and the infrared distance measuring function of the compass can not completely eliminate errors caused by the width of the auxiliary foot, and the precision of the measuring result is still not high.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides the electronic compass, the main foot of a traditional compass is replaced by the projection of a laser pen, and the auxiliary foot is designed into a Z shape, so that the auxiliary foot of the compass can coincide with the circle center during initial measurement, the error caused by the width of the auxiliary foot and the thickness of a pen core is eliminated, and the radius range of a small circle which can be drawn is enlarged.

Technical scheme

The utility model provides an electronic compass, includes the magnetism chassis, a plurality of bracing piece of fixedly connected with annular array on the upper surface on the magnetism chassis, circular slide rail of upper end fixedly connected with of bracing piece, the upper end of circular slide rail is provided with long plank, fixedly connected with gear motor on the long plank, gear motor's output shaft lower extreme is connected with the shaft coupling, the lower extreme of shaft coupling is connected with the customization steel axle, the lower extreme fixedly connected with slip table module of customization steel axle, sliding connection has the setting-out mechanism that is used for drawing the circle on the slip table module.

Further, setting-out mechanism include sliding connection in the slider of slip table module, through bolt fixedly connected with stationary blade on the lower surface of slider, the vice foot of lower extreme fixedly connected with compasses of stationary blade, the bottom of the vice foot of compasses is provided with the jack that is used for placing the painting brush, threaded connection has on the vice foot of compasses and can stretch into the screw of jack and fixed painting brush.

Furthermore, one end of the sliding table module, which is close to the circular sliding rail, is rotatably connected with a small pulley which is connected with the circular sliding rail in a rolling manner.

Furthermore, a plurality of small magnets for fixing paper are arranged on the magnetic chassis.

Further, be provided with fixed connection under the customization steel axle in the slip table module be used for the location centre of a circle and debug the laser pen at the vice foot zero point of compasses.

Furthermore, still be provided with on the slip table module and be used for driving the gliding motor of slider.

Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

1. the compasses use the laser pen projection to replace the entity main foot of traditional compasses, design into "Z style of calligraphy" with vice foot again and make the vice foot of compasses coincide with the centre of a circle during initial measurement, eliminate the error that vice foot width and refill thickness brought, enlarged the radius scope that can draw the small circle simultaneously.

2. The compasses design the jack with the vice foot of compasses bottommost to adjustable and fixed drawing tool's height from this to promote the stability of drawing in-process.

3. The compasses can automatically measure the radius through the program control sliding table, and the errors of measuring the thickness of the pen core and the eyes when the radius is measured by the common compasses are eliminated.

4. Through the last fixed surface of customization steel axle and slip table module, the reuse shaft coupling links together customization steel axle other end and gear motor shaft to reach and drive the slip table around the automatic purpose of drawing a circle of fixed point commentaries on classics with gear motor, process automation, labour saving and time saving just can eliminate the most error of artifical drawing in-process.

5. Let gear motor's axle pass through the little hole and be connected with the slip table module one end of plank below through drilling on long plank for long plank does not influence the connection of each subassembly when bearing gravity, arranges the small pulley of the slip table module other end in circular slide rail, takes plank both ends again on circular slide rail, is equipped with the bracing piece under circular slide rail and is connected with the magnetism chassis, constructs a complete stable structure from this.

6. The drawing process is driven by procedure and motor basically, need not manual drawing, can also the big degree eliminate the error of artifical drawing when increasing drawing convenience and travelling comfort, improves the drawing accuracy nature.

Drawings

FIG. 1 is a schematic structural view of an electronic compass of the present invention;

fig. 2 is a schematic view of a partial structure of the sliding table module;

FIG. 3 is a schematic view of the connection structure of the small pulley;

fig. 4 is a schematic structural view of the drawing mechanism.

In the figure: 1. gear motor, 10, long plank, 11, circular slide rail, 12, bracing piece, 13, magnetism chassis, 14, slip table module, 15, slider, 16, little magnet, 17, stationary blade, 18, the vice foot of compasses, 19, screw, 21, shaft coupling, 22, customization steel axle, 23, laser pen, 25, little pulley.

Detailed Description

For a better illustration of the utility model, reference is made to the following description, taken in conjunction with the accompanying drawings and examples:

it should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention, and thus the appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, and further, such particular feature, structure or characteristic may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

As shown in fig. 1-4, the utility model discloses an electronic compass, which comprises a magnetic chassis 13, wherein a plurality of support rods 12 in an annular array are fixedly connected to the upper surface of the magnetic chassis 13, a circular slide rail 11 is fixedly connected to the upper ends of the support rods 12, a long wood plate 10 is arranged at the upper end of the circular slide rail 11, a speed reduction motor 1 is fixedly connected to the long wood plate 10, a coupler 21 is connected to the lower end of an output shaft of the speed reduction motor 1, a customized steel shaft 22 is connected to the lower end of the coupler 21, a sliding table module 14 is fixedly connected to the lower end of the customized steel shaft 22, and a line drawing mechanism for drawing a circle is slidably connected to the sliding table module 14.

Further, the setting-out mechanism includes sliding connection in the slider 15 of slip table module 14, through bolt fixedly connected with stationary blade 17 on the lower surface of slider 15, the vice foot 18 of lower extreme fixedly connected with compasses of stationary blade 17, the bottom of the vice foot 18 of compasses is provided with the jack (not shown) that is used for placing the painting brush, threaded connection has the screw 19 that can stretch into jack and fixed painting brush on the vice foot 18 of compasses.

Further, one end of the sliding table module 14 close to the circular sliding rail 11 is rotatably connected with a small pulley 25 which is connected with the circular sliding rail 11 in a rolling manner.

Further, a plurality of small magnets 16 for fixing the paper are placed on the magnetic base 13.

Further, a laser pen 23 which is fixedly connected with the sliding table module 14 and used for positioning the circle center and debugging the zero point of the auxiliary foot 18 of the compasses is arranged right below the customized steel shaft 22.

Further, a motor (not shown) for driving the sliding block 15 to slide is further disposed on the sliding table module 14.

Specifically, the motor is controlled by a computer program to operate, so that the sliding block 15 on the sliding table module 14 stops after reaching a designated position, then the speed reducing motor 1 is started, a motor shaft of the speed reducing motor 1 drives the customized steel shaft 22 to rotate through the coupler 21, the sliding table module 14 is further driven to rotate, the sliding table module 14 drives the auxiliary compasses foot 18 fixed at the bottom end of the sliding block 15 to rotate while rotating, and therefore a drawing tool fixed at the bottom end of the auxiliary compasses foot 18 draws a circle on paper on the magnetic chassis 13;

the computer program controls the sliding table module 14 to automatically measure the radius, so that errors of the thickness of the pen core and the measurement of human eyes when the radius is measured by a common compass are eliminated.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the technical solutions of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced equally; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (6)

1. An electronic compass is characterized in that: including magnetism chassis (13), a plurality of bracing piece (12) of fixedly connected with annular array on the upper surface on magnetism chassis (13), circular slide rail (11) of upper end fixedly connected with of bracing piece (12), the upper end of circular slide rail (11) is provided with long plank (10), fixedly connected with gear motor (1) is gone up in long plank (10), the output shaft lower extreme of gear motor (1) is connected with shaft coupling (21), the lower extreme of shaft coupling (21) is connected with customization steel axle (22), the lower extreme fixedly connected with slip table module (14) of customization steel axle (22), sliding connection has the setting-out mechanism that is used for drawing the circle on slip table module (14).

2. The electronic compass according to claim 1, wherein: line drawing mechanism include sliding connection in slider (15) of slip table module (14), through bolt fixedly connected with stationary blade (17) on the lower surface of slider (15), the vice foot of lower extreme fixedly connected with compasses (18) of stationary blade (17), the bottom of the vice foot of compasses (18) is provided with the jack that is used for placing the painting brush, threaded connection has on the vice foot of compasses (18) can stretch into screw (19) of jack and fixed painting brush.

3. The electronic compass according to claim 1, wherein: one end of the sliding table module (14) close to the circular sliding rail (11) is rotatably connected with a small pulley (25) which is connected with the circular sliding rail (11) in a rolling mode.

4. The electronic compass according to claim 1, wherein: a plurality of small magnets (16) for fixing paper are arranged on the magnetic chassis (13).

5. The electronic compass according to claim 2, wherein: and a laser pen (23) which is fixedly connected with the sliding table module (14) and used for positioning the circle center and debugging the zero point of the auxiliary foot (18) of the compass is arranged under the customized steel shaft (22).

6. The electronic compass according to claim 2, wherein: and a motor for driving the sliding block (15) to slide is further arranged on the sliding table module (14).

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