CN113993714A

CN113993714A - Pen type compasses

Info

Publication number: CN113993714A
Application number: CN202080041161.9A
Authority: CN
Inventors: 高木智子
Original assignee: Raymay Fujii Corp
Current assignee: Raymay Fujii Corp
Priority date: 2019-06-05
Filing date: 2020-05-22
Publication date: 2022-01-28
Anticipated expiration: 2040-05-22
Also published as: KR102631703B1; JP2023054261A; JP7234360B2; CN113993714B; JP7454077B2; WO2020246278A1; KR20220005086A; JPWO2020246278A1

Abstract

Provided is a pen-type compass which can utilize the core of a general mechanical pencil, and can make the pressing action easier to improve the use convenience. The pen type compasses are provided with a needle side body (12) and an automatic side body (11), wherein the automatic side body (11) is provided with an automatic side body upper part (11a), an automatic side body lower part (11b) for accommodating an automatic mechanism part (21), and a connecting part (13) for detachably connecting the automatic side body upper part (11a) and the automatic side body lower part (11b), the connecting part (13) is provided with a core protecting part (133), the core protecting part (133) is provided with a through hole in the axial direction, the upper part of a core with a general length (60mm) inserted into the automatic mechanism part (21) is held, the connecting part (13) is formed to be capable of accommodating the length of the upper end part of the core, and a mountain-shaped protruding part (145) is arranged on the surface of a pressing part (14).

Description

Pen type compasses

Technical Field

The present invention relates to a pen-type compass having excellent portability, and more particularly, to a pen-type compass capable of facilitating a pressing operation for ejecting a core by using a core of a general-length mechanical pencil and improving convenience in use.

Background

[ description of the Prior Art ]

Conventionally, as a compass that is portable, there is a pen-type compass having a cap and a pen-type.

The pen-type compass is formed into a substantially cylindrical shape such as a writing instrument when the leg of the body is closed, and is provided with a cap portion that protects the distal end portion of the needle and the core from being exposed.

The cap is attached to the pen case, so that the needle and the core are not exposed, and therefore, the pen case can be safely handled, and when the pen case is stored, other articles are not damaged, and the end portion of the compass can be protected, thereby providing a structure that is convenient to carry.

Since the closed state is a pen type, it can be stored in the pen box as in the case of other pens.

In addition, some pen-type compasses have a small mechanical pencil instead of a core. In the mechanical pencil type pen compasses, a mechanical pencil mechanism (mechanical mechanism) which accommodates a core and discharges the core at a predetermined pitch by being pushed from the outside is provided.

In conventional mechanical pencil type pen compasses, a special core having a length shorter than that of a general mechanical pencil is used.

In the conventional mechanical pencil type pen compasses, a pressing portion for performing a pressing operation is provided on a side surface of a main body, and a core is ejected by sliding the pressing portion downward.

[ correlation technique ]

Further, as conventional techniques relating to compasses, there are the compasses disclosed in japanese patent application laid-open No. 3178069 (patent document 1), the compasses disclosed in japanese patent application laid-open No. 3179264 (patent document 2), and the compasses disclosed in japanese utility model laid-open No. 60-141289 (patent document 3) in which pencil leads are obtained.

Patent document 1 describes a pen-type compass provided with a device for feeding out a core.

Patent document 2 describes a compasses that can be used with a pencil and that has a black needle shape.

Patent document 3 describes a compass in which a replaceable core can be incorporated.

Prior art documents

Patent document

Patent document 1: japanese patent registration No. 3178069

Patent document 2: japanese patent registration No. 3179264

Patent document 3: japanese Kokai publication Sho-60-141289

Disclosure of Invention

Problems to be solved by the utility model

However, the conventional pen-type compasses using a mechanical pencil have the following problems: the mechanical pencil is inconvenient because the lead of the mechanical pencil cannot be used in a general length, and the mechanical pencil is of a side knock type, so that particularly in the case of children, the force from the fingertip cannot be smoothly transmitted, and the knock operation is difficult in some cases.

Patent documents 1 to 3 do not describe a mechanical pencil type pencil compass that can use a core of a general mechanical pencil and can facilitate a knock operation.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a pen-type compass which can improve convenience by using a core of a general mechanical pencil, and can improve convenience by facilitating a pressing operation.

Means for solving the problems

The present invention, which is intended to solve the problems of the conventional art, is a pen-type compass including: a needle-side body which becomes a leg portion provided with a needle; a mechanical side body which is a leg part for accommodating the mechanical part of the mechanical pencil; and a center part for accommodating and holding the upper ends of the needle side body and the automatic side body, wherein the pen-type compass is in a pen-type shape when the needle side body and the automatic side body are closed, wherein the automatic side body is provided with an automatic side body upper part, an automatic side body lower part and a connecting part for connecting the automatic side body upper part and the automatic side body lower part, the connecting part is provided with a roughly cylindrical core protecting part for protecting the upper part of the core of the automatic pencil with the length of about 60mm inserted into the automatic pencil mechanism part, the connecting part is formed with the length capable of accommodating the upper end part of the core, a pressing part for performing pressing action of releasing the core is arranged on the side surface of the automatic side body lower part, and a protrusion part protruding in a mountain shape is arranged on the surface of the pressing part.

In the pen-type compass according to the present invention, the pressing portion includes a concave-convex portion, and the protrusion is provided below the concave-convex portion.

Further, according to the above-described pen-type compass of the present invention, in a state where the mechanical pencil mechanism is housed in the lower portion of the propelling side body and the coupling portion is coupled to the lower portion of the propelling side body, when a core of about 60mm is inserted from the upper end of the core protecting portion, the upper portion of the core does not protrude from the upper end of the coupling portion.

Further, the present invention is the pen-type compass described above, wherein the pen-type compass further includes a cap portion attached to the distal end portion in a state where the needle-side body and the robot-side body are closed and combined, and protecting the distal end portion.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, the pen-type compass includes: a needle-side body which becomes a leg portion provided with a needle; a mechanical side body which is a leg part for accommodating the mechanical part of the mechanical pencil; and a center part for receiving and holding the upper ends of the needle side body and the automatic side body, wherein the pen-type compass is in a pen-type shape when the needle side body and the automatic side body are closed, wherein the automatic side body comprises an automatic side body upper part, an automatic side body lower part and a connecting part for connecting the automatic side body upper part and the automatic side body lower part, the connecting part comprises a substantially cylindrical core protecting part for protecting the upper part of the core of the automatic pencil with the length of about 60mm inserted into the automatic pencil mechanism part, the connecting part is formed with the length capable of receiving the upper end part of the core, a pressing part for performing pressing action of releasing the core is arranged on the side surface of the automatic side body lower part, and a protrusion part protruding in a mountain shape is arranged on the surface of the pressing part, thereby having the following effects: the pencil lead has the advantages that the pencil lead can be used without preparing a special lead, the convenience is improved by using the lead for the mechanical pencil with a common length, and the finger is hooked on the protruding part during pressing, so the pencil lead is not easy to slip, the pressing action can be easily carried out, and the convenience in use can be improved.

Drawings

FIG. 1 is a perspective view showing a schematic structure of the compass.

Fig. 2 is a perspective view of a state in which the cap is closed.

Fig. 3 is an external view of the inside of the robot-side body 11.

Fig. 4 is an exploded explanatory view showing the structure of the robot-side main body 11.

Fig. 5 is an explanatory diagram showing a structure (1) of the scale section.

Fig. 6 is an explanatory diagram showing a structure (2) of the scale section.

Detailed Description

Embodiments of the present invention will be described with reference to the accompanying drawings.

[ summary of embodiments ]

A pen-type compass (compass) according to an embodiment of the present invention includes a needle-side body provided with a needle and a mechanical pencil-side body (mechanical-side body) provided with a mechanical pencil mechanism, and is formed into a substantially cylindrical pen shape when the needle-side body and the mechanical-side body are closed together.

The mechanical side body includes a mechanical side body upper portion, a mechanical side body lower portion, and a coupling portion for coupling the mechanical side body upper portion and the mechanical side body lower portion, the coupling portion includes a substantially cylindrical core protecting portion having a through hole in an axial direction for protecting an upper portion of a general core of 60mm length inserted into the mechanical pencil portion, and the coupling portion is formed to a length capable of accommodating an upper end portion of the core, and a sufficient space is formed above the mechanical pencil portion, so that a core for a general mechanical pencil can be used without using a dedicated core, and convenience can be improved.

The compass is provided with a push-button part for pushing the mechanical pencil part on the side surface of the lower part of the mechanical side body, and a plurality of anti-slip ribs (concave-convex parts) are formed on the surface of the push-button part, and a protrusion part is provided closer to the pen point than the concave-convex parts, so that the finger tip can be hooked during pushing, the push-button action is easy, and the use convenience is improved.

The general structure of the pen-type compass of the embodiment: FIG. 1 and FIG. 2

The outline of the compass will be described with reference to fig. 1 and 2. Fig. 1 is a perspective view showing a schematic structure of the compass, and fig. 2 is a perspective view showing a state in which a cap is closed.

As shown in fig. 1, the compass includes a main body 1 and a cap 2 covering (attached to) a distal end portion of the main body 1, and has a shape very similar to a writing instrument such as a ballpoint pen in a state where the cap is closed as shown in fig. 2.

The compass is a mechanical pencil type structure having a mechanical pencil on a leg portion of the main body 1.

The main body 1 includes a center portion 10, an automatic side body 11 as one leg portion of the compass, a needle side body 12 as the other leg portion, and a main body connecting portion 15.

The automatic side body 11 includes an automatic side body upper part 11a, an automatic side body lower part 11b, a coupling part 13, and a knock part 14.

The automatic-side body upper part 11a, the automatic-side body lower part 11b, and the needle-side body 12 are formed of zinc die-cast or the like, and the center part 10, the coupling part 13, and the knock part 14 are formed of plastic or the like.

The mechanical side body 11 includes a mechanical pencil mechanism (mechanical mechanism) therein, and a tip 31 of the mechanical pencil is exposed at a distal end thereof.

The knock part 14 is pushed to eject the wick 32 from the pen tip 31. Here, the lead 32 is not a short lead dedicated to compasses, but a long lead of 60mm used in a general mechanical pencil. Since a lead having a general length can be used, the user can use a lead of a general-purpose mechanical pencil or select a lead having a preferable hardness.

In addition, the needle-side body 12 is provided with a needle 33 at the tip.

The needle 33 of the compass is a black needle.

By making the color black, when the compasses are used for a notebook or the like having a white base in many cases, the end of the needle 33 can be easily seen (visibility is improved), and convenience in use can be improved.

The center portion 10 has a knob at the upper end, and a center device for fixing the knob to the center of the compass is provided inside, and accommodates and holds the upper end of the automatic side body upper portion 11a and the upper end of the needle side body 12.

The body connecting portion 15 includes a screw and a nut, and slidably fixes the automatic side body upper portion 11a and the needle side body 12 in a state where the automatic side body upper portion 11a and the upper end portion of the needle side body 12 are accommodated in the center portion 10. The nut of the body connecting portion 15 is provided on the rear side of fig. 1 and 2.

The automatic side body 11 and the needle side body 12 can be opened and closed about a point connected by the body connecting portion 15.

The automatic side body 11 and the needle side body 12 are opened at the same angle by the center, and thus the knob of the center portion 10 is always positioned at the center of the compass.

The cap 2 is made of polypropylene (PP), ABS (Acrylonitrile-Butadiene-Styrene) resin, or the like, and in a state where the robot-side body 11 and the needle-side body 12 are in contact with each other, the cap 2 covers the distal end portion and is fixed so as not to fall off.

The connecting portion 13 is a characteristic portion of the present compass, connects the automatic side body upper portion 11a and the automatic side body lower portion 11b, and functions also as a stopper on the upper end side of the knock portion 14.

The coupling portion 13 is detachably connected to the robot side upper body portion 11a and the robot side lower body portion 11 b.

The knock part 14 is a side-knock type knock button, and is pushed toward the lower end of the main body 1 to press and compress a spring of an automatic mechanism part described later, thereby ejecting the core. When the release finger releases the depression, the knock part 14 returns to the original position.

A plurality of rib-like irregularities, that is, concave and convex portions, and a protruding portion 145 are provided on the surface of the knock portion 14 so that a finger can be easily hooked.

The protrusion 145 is a mountain-shaped protrusion provided at a portion closer to the lower end of the knock part 14 than the concave-convex portion and protruding outward from the side surface of the main body 1. The height of the protrusion 145 is higher than the height of the convex portion of the concave-convex portion, and is set to a level to which the pulp of the thumb is hooked.

Since the knock part 14 is provided with not only the uneven portion but also the projection 145, when the knock part 14 is pushed down (in the direction of the pen tip 31), the fingertip is caught by the projection 145 and does not easily slip, and the force is easily transmitted, so that the knock operation is easily performed. Thus, even a child can easily perform the pressing operation.

The inner structures of the connection section 13 and the knock section 14 will be described later.

In addition, a recessed portion 16 is provided in a portion where the automatic side body 11 abuts against the needle side body 12, so that the operation is easy when both bodies are opened from the closed state. Specifically, the automatic-side body is provided with a recess 16a, and the needle-side body 12 is provided with a recess 16 b. The recess 16a of the robot main body 11 is provided in the coupling portion 13.

The recessed

portions

16a and 16b are formed similarly on the rear side of fig. 1 and 2.

Inner side of the robot-side body 11: FIG. 3

Next, the structure of the inner side of the robot main body 11 will be described with reference to fig. 3. Fig. 3 is an external view of the inside of the robot-side body 11.

As shown in fig. 3, the inner side of the automatic side body 11 (the side abutting on the needle side body 12) is constituted by an automatic side body upper part 11a, a connecting part 132 of the connecting part 13, and an automatic side body lower part 11 b.

The interior of the robot-side main body lower portion 11b is a hollow portion, and the robot mechanism portion is housed in the hollow portion. Specifically, the inner cavity of the automatic side main body lower portion 11b has a thickness of 2 steps, an upper portion is thick (large diameter), and a lower portion is thin (small diameter).

The connection portion 132 of the connection portion 13 will be described later.

Structure of the robot-side body 11: FIG. 4

Next, the structure of the robot-side main body 11 will be described with reference to fig. 4. Fig. 4 is an exploded explanatory view showing the structure of the robot-side main body 11.

As shown in FIG. 4, the automatic side body 11 of the compass is provided with an automatic side body lower part 11b, an automatic mechanism part 21, a pressing part 14, a connecting part 13 and an automatic side body upper part 11 a.

The automatic mechanism 21 is a general-purpose product, and houses the core 32 inside a cylindrical shaft.

The spring portion 24 and the pressing portion 23 provided on the upper portion of the spring portion 24 are provided on the outer side of the shaft, and the pressing portion 23 is provided with an engaging portion 231 that engages with the protruding portion 142 of the knock portion 14.

As described above, the automatic side body lower portion 11b is hollow and houses the automatic mechanism portion 21, and the pen tip 31 of the automatic mechanism portion 21 protrudes from the lower end portion of the automatic side body lower portion 11 b. The upper portion of the robot mechanism portion 21 is housed so as not to protrude from the upper end portion of the robot-side body lower portion 11 b.

The length of each part is as follows: the automatic side body lower part 11b > the connecting part 13 > the automatic side body upper part 11a > the pressing part 14.

Further, a slit 111 into which the knock part 14 is slidably engaged is formed in an outer side surface (back surface side in fig. 4) of the automatic-side body lower part 11 b.

The knock part 14 presses the upper part of the automatic mechanism part 21.

Further, a fixing portion 40 for fixing the robot portion 21 is attached to the inside of the robot side body lower portion 11 b. The fixing portion 40 is formed of a resin having elasticity, etc., and has a substantially cylindrical shape having a through hole therein.

In fig. 4, the fixing portion 40 is shown in a state of being attached to the robot portion 21 side for easy understanding, but actually, the fixing portion 40 is fixedly provided in advance in the cylinder of the robot-side main body lower portion 11 b.

Specifically, the outer diameter of the fixing portion 40 is formed to be smaller than the inner diameter of the upper portion of the automatic side body 11b and slightly larger than the inner diameter of the lower portion. The fixing portion 40 is strongly pressed into the lower cavity from the upper cavity of the robot main body 11b and fixed.

The inner diameter (diameter of the through hole) of the fixing portion 40 is formed to be slightly smaller than the outer diameter of the automatic mechanism portion 21, and the automatic mechanism portion 21 is strongly inserted into the through hole of the fixing portion 40 and fixed by friction.

Since the fixing portion 40 is made of a deformable material, it is deformed by applying a force, and the automatic mechanism portion 21 can be inserted when the compass is manufactured.

The core 32 used in the present compass is a core for a general mechanical pencil, and protrudes upward from the upper end of the automatic mechanism 21 when the compass is used.

In the present compass, the space for accommodating the projection is provided in the mechanical side body 11, so that a core of a general mechanical pencil can be used. In addition, a short core dedicated to the conventional compass can be used.

The pressing section 14 includes: a knock part side surface 141 constituting a part of the outer side surface of the automatic side body 11; and a protrusion 142 protruding inward. The concave-convex portion and the protruding portion 145 are formed outside the knock portion side surface 141.

The pressing portion side surface 141 abuts against the connecting portion side surface 131.

The protrusion 142 has a disk shape, and a hole through which the upper portion of the automatic mechanism 21 passes is provided near the center.

The portion connecting the pressing portion side 141 and the protruding portion 142 is engaged with the concave portion 111 of the automatic-side body lower portion 11b, and the pressing portion 14 slides up and down.

The protruding portion 142 of the knock portion 14 engages with the engagement portion 231 of the automatic mechanism 21.

When the knock part 14 is pushed down, the protrusion 142 pushes down the push-down part 23, and the push-down part 23 compresses the spring part 24, thereby ejecting the core 32 from the pen tip 31.

The coupling portion 13 includes: a coupling part side surface 131 which is a part of the outer side surface of the robot main body 11; a connecting portion 132 connected to the connecting portion side surface 131 and forming a part of the inner side surface of the robot side body 11; and a cylindrical core protecting portion 133 provided inside.

The core protecting portion 133 protects the upper portion of the core protruding from the robot portion 21.

The hole penetrating the core protection unit 133 is formed such that the axis thereof coincides with the axis of the hole of the robot unit 21, and is a space for accommodating the upper portion of the core 32.

That is, in the present compass, since a space through which the lead can be inserted is provided from the mechanical portion 21 to the lead protecting portion 133 of the connecting portion 13, a long lead for a general mechanical pencil can be used as compared with a conventional short dedicated lead.

That is, the space formed between the mechanical portion 21 and the core guard 133 of the coupling portion 13 is longer than the length (60mm) of a typical mechanical pencil core, and is sufficiently accommodated in the upper end portion of the core 32.

Thus, the upper end of the core 32 of the new product does not protrude in a state where the automatic mechanism 21 is accommodated in the automatic side body lower part 11b, the knock part 14, and the coupling part 13 are connected.

Therefore, the user can use the core used in the general mechanical pencil in the compass without specially preparing the core dedicated to the compass.

In addition, the core protecting portion 133 may not be formed over the entire length of the coupling portion 13 in terms of holding the core, and may be formed to have a length similar to that of the coupling portion 132, for example, and as shown in fig. 4, by forming the core protecting portion 133 over substantially the entire length of the coupling portion 13, the core can be stably held in the cavity, and when the core 32 is put in, the orientation of the core is shifted, and the core 32 is protected so that the tip end does not come into contact with the edge portion of the automatic mechanism portion 21 and break.

The automatic side body 11 of the compass is assembled by abutting the upper end of the connecting portion 132 against the lower end of the automatic side body upper portion 11a and abutting and engaging the lower end of the connecting portion 132 against the upper end of the automatic side body lower portion 11 b.

When the core 32 is inserted, the robot main body 11 is removed from the robot main body upper part 11a, and the core is inserted from the opening at the upper end of the core protecting part 133.

[ application example: size matching of circles ]

In the conventional compasses, when drawing a circle, the mechanical side body 11 and the needle side body 12 are opened, the distance between the lead 32 and the needle 33 of the mechanical pencil is measured with a ruler or the like, and the degree of opening is adjusted so that the radius matches a desired radius.

In addition, the radius may deviate during circle drawing, and a correct circle may not be drawn.

In an application example of the compass, a simple scale portion is provided as an accessory member separately from the main body, the scale portion can be attached to the main body, a circle of a specific size can be drawn without measuring with a ruler, and the interval (angle) between the automatic side main body 11 and the needle side main body 12 can be fixed so that the size does not deviate during drawing.

Application examples are explained below.

[ Structure (1) of scale part: FIG. 5

The structure (1) of the scale section will be described with reference to fig. 5. Fig. 5 is an explanatory view showing a configuration (1) of the scale section, (a) shows a protrusion provided on the body side, and (b) shows a state in which the scale section 4 is attached to the present compass.

The scale portion 4 may be mounted on either the automatic side body 11' or the needle side body 12', but the structure mounted on the needle side body 12' is explained here.

As shown in fig. 5(a), the present compass to which the scale portion 4 can be attached is provided with two

protrusions

21a and 21b on the needle side body 12 'and a protrusion 21c on the automatic side body 11'. The scale 4 is attached to the compass by the

protrusions

21a, 21b, and 21c and fixed to a desired radius.

The positions where the

protrusions

21a, 21b, and 21c are provided may be any positions as long as they do not interfere with the operation of the knock part 14, and may be provided in the

recesses

16a and 16b, for example.

As shown in fig. 5(b), the scale portion 4 is a detachable member that is used by being attached to the needle side body 12' of the compass.

The scale portion 4 is formed in an arcuate shape (circular arc shape) from a thin plate of plastic or the like, and has

holes

41a and 41b formed at one end portion and a plurality of holes 42 arranged in a circular arc toward the other end portion.

The holes 42 correspond to radii of 2.0cm, 2.5cm, 3.0cm and 3.5cm …, and values of corresponding radial dimensions are described in the vicinity of the respective holes 42. That is, by engaging the hole portions 42 with the protrusions 21c, the distance between the needle 33 and the tip of the lead 32 of the mechanical pencil becomes a corresponding radial dimension.

Specifically, as shown in fig. 5(b), the

projections

21a and 21b of the needle-side body 12 'are engaged with

holes

41a and 41b provided at the end of the scale 4, and the scale 4 is fixed to the needle-side body 12'. By providing two protrusions, the scale 4 can be firmly fixed without rotating.

Further, the projection 21c provided on the automatic side body 11' engages with any of the holes 42 of the scale portion 4 to fix the distance (angle) between the needle side body 12' and the automatic side body 11' so as to have a specific radial dimension.

The diameter of the

protrusions

21a, 21b, 21c is equal to or slightly larger than the diameter of the

holes

41a, 41b, 42, and when the scale portion 4 is attached and detached, the

holes

41a, 41b, 42 are deformed and enlarged, so that the insertion and detachment are possible, and the protrusions do not come off accidentally in the attached state.

In the case of using the scale 4, although it cannot be fixed to a size other than the hole 42, it can be easily set to a radius size that is often used with a simple configuration, and it is possible to prevent the size from being deviated during circle drawing, thereby improving convenience.

[ Structure (2) of scale part: FIG. 6

In the structure (1) of the scale portion, it is necessary to form a protrusion portion on the compass body, and in the structure (2) of the scale portion, it is not necessary to change the compass body, and the structure can be easily realized.

The structure (2) of the scale section will be described with reference to fig. 6. Fig. 6 is an explanatory view showing a structure (2) of the scale section, (a) shows a state where the scale section 5 is attached to the compass, (b) shows an attachment portion of the needle side body 12, and (c) shows an engagement portion of the automatic side body 11.

The scale portion 5 is detachably fixed to either the needle side body 12 or the automatic side body 11 of the present compass, and here, it is shown that the scale portion is attached to the needle side body 12.

As shown in fig. 6(a), the scale portion 5 is formed in an arcuate shape of plastic or the like, includes a plurality of scale marks 51, and is detachably fixed to the needle-side body 12 by a fixing portion 52. Similarly to the scale portion 5, a value of the radius size is described in the vicinity of the scale line 51, but illustration thereof is omitted.

The automatic side body 11 is provided with a pressing portion 54 as a detachable member.

Pressing part 54 is a member for lightly pressing scale part 5 against automatic side body 11, and has through hole 56 (see fig. 6 c) penetrating in the left-right direction in fig. 6a, and scale part 5 penetrates through hole 56, and pressing part 54 slides on scale part 5 in accordance with the opening and closing operation of automatic side body 11.

Pressing portion 54 is formed of a transparent member, and a scale matching portion 55 serving as a reference of a desired radius is formed on the surface. The line of the mating graduation portion 55 is drawn long so as not to be confused with the graduation line 51 of the graduation portion 5. The scale matching section 55 and the scale line 51 may be made of different colors.

Then, the user observes the graduation marks 51 of the graduation unit 5 through the transparent pressing unit 54 while opening and closing the automatic side body 11, and matches the graduation matching unit 55 with a desired radial length with reference to the graduation marks 51, so that the distance between the needle 32 and the lead of the mechanical pencil of the present compass becomes the radial length.

As shown in fig. 6(b), a fixing portion 52 formed in an L-shape is provided at the left end portion of the scale portion 5.

The fixing portion 52 is formed to have a size and a length that are closely fitted to the recessed portion 16b of the needle-side body 12, for example. Thus, the scale section 5 is always attached to the same position, and variation in the radial dimension is prevented.

As shown in fig. 6(c), pressing portion 54 is attached to recessed portion 16a of automatic side body 11. Pressing portion 54 includes fixing portion 53 formed in an L shape, and is tightly fitted and fixed to recessed portion 16 b. As described above, pressing portion 54 is provided with through hole 56 through which scale portion 5 passes.

[ other application examples ]

As another application example, the robot section 21 may be detachable, various robot sections may be prepared as accessories, and any robot section may be attached and used.

For example, an automatic mechanism portion of a type that automatically leads out the core without being pressed may be attached.

The thickness of the core is not limited to 0.5mm in general, and an automatic mechanism portion corresponding to a core of 0.3mm or 0.7mm may be attached.

Thus, the user can select the operation method or the thickness of the core according to the preference or the application.

[ Effect of the embodiment ]

According to the present compass, the automatic side body 11 includes the automatic side body upper portion 11a, the automatic side body lower portion 11b, and the coupling portion 13 as a pen-type compass, and the coupling portion 13 includes the core protecting portion 133, and the core protecting portion 133 includes a through hole in the axial direction, protects the upper portion of the core inserted into the automatic mechanism portion 21 and having a space capable of being accommodated in the upper end portion of the core, so that even if a core dedicated for compasses is not prepared, the core for a general mechanical pencil can be used, and an effect of improving convenience can be obtained.

Further, according to the present invention, since the protrusion 145 is provided on the surface of the side-knock-type knock section 14, a finger is hooked on the protrusion 145 during the knock operation, so that the knock section 14 can be easily pushed down, and the usability can be improved.

Further, according to the compass, since the detachable scale portion 4 is provided in the main body, the compass can be easily opened in accordance with the radial dimension without using a ruler or the like, and the opened state can be fixed by engaging the hole portion 42 of the scale portion 4 with the protrusion portion 21c of the main body, and the radial dimension can be prevented from being deviated during drawing, thereby improving convenience.

Industrial applicability

The present invention relates to a pen-type compass which has excellent portability, can use the core of a general propelling pencil, makes the pressing operation of releasing the core easy, and can improve the use convenience.

Description of reference numerals

1 … body, 2 … cap, 4, 5 … graduation, 10 … center, 11'… automatic side body, 11a … automatic side body upper, 11b … automatic side body lower, 12' … needle side body, 13 … connection part, 14 … snap part, 15 … body connection part, 16a, 16b … depression, 21 … automatic mechanism part, 21a, 21b, 21c … protrusion, 23 … press part, 24 … spring part, 31 … pen point, 32 … core, 33 … needle, 40 … fixation part, 41a, 41b, 42 … hole part, 51 … scale line, 52, 53 … fixation part, 54 scale 9 pressing part, 55 … involution part, 56 … penetration hole, 111 …, 131 … side, 132 …, 133 … core protection part, 141 … snap part, 54 … protrusion part, 142 … and 36142 connection part ….

Claims

1. A pen-type compass is provided with: a needle-side body which becomes a leg portion provided with a needle; a mechanical side body which is a leg part for accommodating the mechanical part of the mechanical pencil; and a center part for receiving and holding upper ends of the needle side body and the automatic side body, wherein the pen-type compass is in a pen-type shape when the needle side body and the automatic side body are closed and closed,

it is characterized in that the preparation method is characterized in that,

the automatic side body is provided with an automatic side body upper part, an automatic side body lower part and a connecting part for connecting the automatic side body upper part and the automatic side body lower part,

the coupling portion includes a substantially cylindrical lead protecting portion which protects an upper portion of a lead of a mechanical pencil having a length of about 60mm inserted into the mechanical pencil portion, and is formed to have a length capable of accommodating an upper end portion of the lead,

a pressing part for pressing and releasing the core is arranged on the side surface of the lower part of the automatic side body,

the surface of the pressing part is provided with a protruding part protruding outwards.

2. The pen compass of claim 1,

the pressing part is provided with a concave-convex part,

the projection is provided on the lower side of the concave-convex portion.

3. The pen compasses of claim 1 or 2,

in the state that the mechanical pencil mechanism part is contained in the lower part of the mechanical side body and the connection part is connected with the lower part of the mechanical side body,

when a core of about 60mm is inserted from the upper end of the core protecting portion, the upper portion of the core does not protrude from the upper end of the coupling portion.

4. The pen compasses according to any one of claims 1 to 3,

the pen-type compass further includes a cap portion attached to the distal end portion in a state where the needle-side body and the robot-side body are closed and combined, and protecting the distal end portion.