JP7280620B2 - compass - Google Patents

compass Download PDF

Info

Publication number
JP7280620B2
JP7280620B2 JP2020121563A JP2020121563A JP7280620B2 JP 7280620 B2 JP7280620 B2 JP 7280620B2 JP 2020121563 A JP2020121563 A JP 2020121563A JP 2020121563 A JP2020121563 A JP 2020121563A JP 7280620 B2 JP7280620 B2 JP 7280620B2
Authority
JP
Japan
Prior art keywords
needle
tip
central leg
leg
mounting portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2020121563A
Other languages
Japanese (ja)
Other versions
JP2022018453A (en
Inventor
洋介 橡尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kutsuwa Co Ltd
Original Assignee
Kutsuwa Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kutsuwa Co Ltd filed Critical Kutsuwa Co Ltd
Priority to JP2020121563A priority Critical patent/JP7280620B2/en
Priority to CN202011378644.6A priority patent/CN113942332B/en
Publication of JP2022018453A publication Critical patent/JP2022018453A/en
Application granted granted Critical
Publication of JP7280620B2 publication Critical patent/JP7280620B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/02—Compasses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/16—Features common to compasses, dividers, and callipers

Landscapes

  • Portable Nailing Machines And Staplers (AREA)

Description

本発明は、円弧を描くためのコンパスであり、特に学習時の使用に適したものに関する。 The present invention relates to a compass for drawing arcs, particularly suitable for use when learning.

従来のコンパスは、先端に針を持つ中心脚と、先端に鉛筆等の筆記具を保持して回転させる回転脚と、回転脚及び中心脚を開閉自在に軸支した取付体と、該取付体の上方に突出した細長い略円柱状の操作体と、からなるものである。 A conventional compass has a central leg having a needle at its tip, a rotating leg that holds a writing instrument such as a pencil at its tip and rotates it, a mounting body that pivotally supports the rotating leg and the central leg so that they can be opened and closed, and the mounting body. and an elongated substantially cylindrical operating body projecting upward.

作図作業において、定規や鉛筆をコンパスと取り替えながら行うため、机上にコンパスを中心脚の針及び筆記具の先端部が露出したまま置くことが頻繁にある。その際、コンパスの針が使用者に接触して怪我をしたり、他の物品に当たって針先が欠けたりするおそれがあるため、中心脚に内在するバネと、バネに連結された針を設けることで、中心脚内部から針を昇降させる機構を備えた種々のコンパスが提案されている（例えば特許文献１－３参照）。 In drawing work, the ruler and pencil are replaced with the compass, so the compass is often placed on the desk with the needle of the central leg and the tip of the writing instrument exposed. At that time, the needle of the compass may come into contact with the user and injure the user, or the tip of the needle may be damaged by contact with other objects. Therefore, various compasses have been proposed that have a mechanism for moving the needle up and down from inside the center leg (see Patent Documents 1 to 3, for example).

しかしながら、上述した特許文献に係るコンパスは、使用時のみ針の先端を露出させるために、ノック部と針に連結されたバネの付勢力によって針の先端部を突出させる出没機構によって、使用するたびに針を昇降させる必要があるため不便であった。また、この針は、バネと連結しているため、針を突き刺すために刺突力はバネの復元力に依存しており、一定の刺突力を与えることが難しく、円弧を描くのが難しくなってしまう欠点を有する。 However, in order to expose the tip of the needle only when in use, the compass according to the above-mentioned patent document has a retracting mechanism that protrudes the tip of the needle by the biasing force of a spring connected to the knock portion and the needle. It was inconvenient because it was necessary to raise and lower the needle every time. In addition, since this needle is connected to a spring, the piercing force for piercing the needle depends on the restoring force of the spring. It has the drawback of becoming

実用新案登録第３１９１８７６号Utility Model Registration No. 3191876 特開平１１－２４０２９３号公報JP-A-11-240293 実用新案登録第３１８４８４４号Utility Model Registration No. 3184844

したがって、円弧を描くとき針の先端部のみが自動的に露出するとともに、紙面に対して一定の刺突力を発揮することができるコンパスが望まれている。 Therefore, there is a need for a compass that automatically exposes only the tip of the needle when drawing an arc and that can exert a constant piercing force against the paper surface.

本発明のコンパスは、上記課題に鑑み、先端に針を持つ中心脚と、筆記具を保持する筆記具保持機構を有し前記中心脚周りに回転させる回転脚と、前記回転脚及び前記中心脚を開閉自在に軸支する操作体と、を備えてなり、
前記中心脚は、中心脚本体と、前記中心脚本体の先端に設けられた針取付部と、を有し、
前記針取付部は、前記針の周囲を被覆する管部及び前記針取付部内に内挿されたガイド部を備えた針保護部と、前記針保護部を前記針の長手方向に沿って付勢力を備えた弾性部材によって昇降自在とする針保護部昇降機構と、を有し、
前記針保護部昇降機構は、前記針保護部と、前記針の基端部を固定して前記針取付部内に内装された針固定部と、前記針固定部と前記針保護部の前記ガイド部との間に介装された前記弾性部材と、を有し、前記針を突き刺すことで前記針保護部のみを上昇させ、前記弾性部材の付勢力により下降させることを特徴とするコンパス。 In view of the above problems, a compass of the present invention has a central leg having a needle at its tip, a rotating leg that has a writing instrument holding mechanism that holds a writing instrument and rotates around the central leg, and opens and closes the rotating leg and the central leg. and an operating body that is freely pivotally supported,
The central leg has a central leg and a needle mounting portion provided at the tip of the central leg,
The needle mounting portion includes a needle protection portion having a tube portion covering the periphery of the needle and a guide portion inserted into the needle mounting portion , and a biasing force acting on the needle protection portion along the longitudinal direction of the needle. a needle protection part lifting mechanism that can be lifted and lowered by an elastic member including
The needle protection part elevating mechanism includes the needle protection part, a needle fixing part that fixes the proximal end of the needle and is installed inside the needle mounting part, and the guide part of the needle fixing part and the needle protection part. and the elastic member interposed between the compass, wherein only the needle protection portion is raised by piercing the needle and lowered by the biasing force of the elastic member.

また、上述した構成に加え、針保護部の管部は、先端を先細り形状にすることが好ましい。 In addition to the configuration described above, it is preferable that the tip of the tube portion of the needle protection portion is tapered.

また、上述した構成に加え、針取付部は、中心脚本体に一体形成された筒状体であり、前記筒状体の中心軸方向は前記中心脚本体の長手方向に対して鋭角をなすように傾斜することが好ましい。 In addition to the above-described configuration, the needle mounting portion is a cylindrical body integrally formed with the central script body, and the central axis direction of the cylindrical body forms an acute angle with the longitudinal direction of the central script body. It is preferable to incline to

請求項１－３記載の発明によれば、円弧を描くときに針の先端部のみが自動的に露出するとともに、紙面に対して一定の刺突力を発揮することができる針保護部昇降機構を備えたコンパスを提供することが可能である。 According to the invention described in claims 1 to 3 , the needle protection part elevating mechanism can automatically expose only the tip of the needle when drawing an arc, and can exert a constant piercing force against the paper surface. It is possible to provide a compass with

本発明の実施形態に係るコンパスの一例を示す正面図である。It is a front view which shows an example of the compass which concerns on embodiment of this invention. 図１の針取付部の側面方向から見た分解図である。FIG. 2 is an exploded view of the needle mount of FIG. 1 viewed from the side; 図１の針取付部周辺の構造を示す拡大断面図である。2 is an enlarged cross-sectional view showing the structure around the needle mounting portion in FIG. 1; FIG. 針保護部昇降機構によって針保護部を上昇させて針の先端部のみ紙面に突き刺した状態を示す拡大断面図及び針の先端部周辺の部分拡大断面図である。FIG. 4 is an enlarged cross-sectional view showing a state in which the needle protection part is raised by the needle protection part elevating mechanism and only the tip of the needle sticks into the paper surface, and a partially enlarged cross-sectional view of the vicinity of the tip of the needle. 図１ のコンパスの中心脚及び回転脚を閉じた状態を示す正面図、及び、針と筆記具の先端部周辺の拡大断面図である。FIG. 2 is a front view showing a state in which the central leg and rotating leg of the compass of FIG. 1 are closed, and an enlarged cross-sectional view around the needle and the tip of the writing instrument;

本発明の実施形態について図１－５に基づいて詳細に説明する。 Embodiments of the present invention will now be described in detail with reference to FIGS. 1-5.

本発明のコンパスは、図１に示すように、先端に針１２を持つ中心脚１０と、中心脚１０周りに回転させる回転脚２０と、回転脚２０及び中心脚１０を開閉自在に軸支する軸部３１を有する操作体３０と、を主体として構成されるものである。 The compass of the present invention, as shown in FIG. 1, has a central leg 10 having a needle 12 at its tip, a rotating leg 20 that rotates around the central leg 10, and pivotally supports the rotating leg 20 and the central leg 10 so as to be openable and closable. and an operating body 30 having a shaft portion 31.

中心脚１０は、亜鉛等の金属材を主体として鋳型製造された棒状の中心脚本体１１と、中心脚本体１１の先端に設けられた針取付部４０と、を備えてなり、針取付部４０は、針１２の周囲を被覆する針保護部４１と、針保護部４１を昇降自在とする針保護部昇降機構を有する。 The center leg 10 is provided with a rod-shaped central leg 11 which is mainly made of a metallic material such as zinc and manufactured by casting, and a needle mounting portion 40 provided at the tip of the central leg 11. The needle mounting portion 40 has a needle protection portion 41 that covers the periphery of the needle 12 and a needle protection portion elevating mechanism that allows the needle protection portion 41 to move up and down.

回転脚２０は、中心脚１０と同様に、亜鉛等の金属材を主体として鋳型製造された内側を中空とする細長い溝状の回転脚本体２１と、回転脚本体２１の先端に筆記具５０を保持するための筆記具保持部７０と、を有する。なお、この筆記具保持部７０は、図５に示すように、中心脚１０の先端付近に取り付けられている針１２のコンパス全体の中心軸に対する傾斜する角度αに対して同等かそれ以下の傾斜する角度βで筆記具を保持しうるようにしたものである。この角度βは、より具体的には、後述する針１２の傾斜する角度αを２０度とする場合に針１２の先端部１２ａに対して筆記具５０の先端を近傍に位置させるため、筆記具５０の先端形状の太さを考慮して約１９度程度とすることが好適である。 Similar to the central leg 10, the rotary leg 20 has an elongated groove-shaped rotary script body 21 with a hollow inside, which is made mainly of a metal material such as zinc and manufactured by a mold. and a writing instrument holding portion 70 for writing. As shown in FIG. 5, the writing instrument holder 70 is inclined at an angle equal to or less than the inclination angle α of the needle 12 attached near the tip of the central leg 10 with respect to the central axis of the compass as a whole. It is designed to hold the writing instrument at an angle β. More specifically, the angle β is set so that the tip of the writing instrument 50 is positioned near the tip 12a of the needle 12 when the inclination angle α of the needle 12, which will be described later, is 20 degrees. Considering the thickness of the tip shape, it is preferable to set the angle to about 19 degrees.

針取付部４０は、中心脚本体１１の外側面に一体形成した筒状体であり、この筒状体の中心軸方向は前記中心脚本体の長手方向に対して鋭角の角度αをなすように傾斜するものである。また、針取付部４０の先端において針１２の先端部１２ａを突出させるとともに、後述する針保護部昇降機構を設けるために両端を開孔して形成されているものである。なお、この角度αは、半径０．５ｃｍから１５ｃｍの間の円弧を描く際に中心脚１０と回転脚２０を拡開した際に、針保護部４１が針取付部４０内で上昇して、適度に針１２の先端部１２ａが露出するようにしたものである。この角度αは、より具体的には、半径が４ｃｍから８ｃｍの範囲の半径の円弧を描くときに、筆記具５０の先端及び針１２の先端部１２ａが紙面Ｓに対して同時におおよそ垂直となるように、約２０度程度とすることが最も好適である。 The needle mounting portion 40 is a cylindrical body integrally formed on the outer surface of the central leg body 11, and the central axial direction of this cylindrical body forms an acute angle α with respect to the longitudinal direction of the central leg body. It is slanted. Further, the tip 12a of the needle 12 protrudes from the tip of the needle mounting portion 40, and both ends are opened to provide a mechanism for lifting and lowering the needle protection portion, which will be described later. This angle α is such that when the center leg 10 and the rotating leg 20 are spread apart when drawing an arc with a radius of 0.5 cm to 15 cm, the needle protection portion 41 rises within the needle mounting portion 40, The tip 12a of the needle 12 is exposed appropriately. More specifically, the angle α is set so that the tip of the writing instrument 50 and the tip 12a of the needle 12 are approximately perpendicular to the paper surface S at the same time when drawing an arc with a radius ranging from 4 cm to 8 cm. 20 degrees is most preferable.

また、この針取付部４０の上端付近の側面には、図２に示すように、後述する針固定部４２の爪部４２ｃ、４２ｃと係合するための略方形状の係合孔４０ａ、４０ａを有する。 Further, as shown in FIG. 2, substantially rectangular engagement holes 40a, 40a for engaging claw portions 42c, 42c of a needle fixing portion 42, which will be described later, are formed on the side surface near the upper end of the needle mounting portion 40. have

針１２は、安全性を考慮した従来の学習用コンパスに比べて非常に細くて鋭利な先端部１２ａを有するものであり、一例として、先端角度が約２０度で傾斜面を約２ｍｍ程度の長さとする先端部１２ａと、約１ｍｍ程度の直径と、針取付部４０の先端から少なくとも約３ｍｍ程度突出する突出長さと、することが好適である。この針１２は、針保護部４１によって強度を補強することができるため、直径の小さいものを採用することができ、従来の学習用コンパスのように安全性や耐久性を考慮した太い針に比べ、針先が紙面に突き刺しやすく、小さい刺突力で紙面Ｓから外れにくくすることが可能である。また、紙面Ｓに対して突き刺したときにできる穴あきの形状を小さくすることも可能である。 The needle 12 has a tip 12a that is much thinner and sharper than a conventional compass for learning in consideration of safety. It is preferable that the tip portion 12a has a diameter of about 1 mm, and a projection length that protrudes from the tip of the needle mounting portion 40 by at least about 3 mm. Since the strength of the needle 12 can be reinforced by the needle protection portion 41, a needle with a small diameter can be adopted, and compared to a thick needle in consideration of safety and durability, such as a conventional compass for learning. , the needle tip can be easily pierced into the paper surface, and can be made difficult to come off from the paper surface S with a small piercing force. Also, it is possible to reduce the shape of the hole formed when the paper surface S is pierced.

針保護部４１は、図３に示すように、紙面Ｓに針１２の先端部１２ａを押し付けていないときに針１２の周囲全体を被覆する程度の長さを備えた合成樹脂材を主体として細長い管状の管部４１ａと、針取付部４０内に内挿されるガイド部４１ｂと、が一体形成されるものである。 As shown in FIG. 3, the needle protection part 41 is mainly made of a synthetic resin material having a length enough to cover the entire circumference of the needle 12 when the tip 12a of the needle 12 is not pressed against the paper surface S, and is elongated. A tubular tube portion 41a and a guide portion 41b inserted into the needle mounting portion 40 are integrally formed.

管部４１ａは、針１２の先端部１２ａ側が開放されており、針取付部４０の先端から突出した針１２の周囲全体を被覆するものであり、針１２の先端部１２ａを露出させない程度の長さを下限とし、針取付部４０内に管部４１ａの一部を上昇させた状態において針１２の先端部１２ａの斜面の途中までを露出する程度の長さを上限とする範囲の全長を備えるものである。より具体的には、この管部４１ａの長さは、上述した範囲において、針１２の先端部１２ａより上述した針保護部４１の凹部４１ｃにおける隙間の半分程度（約０．６ｍｍ程度）長くすることが好適である。また、この管部４１ａは針１２の先端部１２ａを露出させない代わりに、作図作業における円弧の中心点の位置を決めやすいように先端を先細り形状とすることが好適である。 The tube portion 41a is open on the side of the tip portion 12a of the needle 12, covers the entire periphery of the needle 12 protruding from the tip of the needle mounting portion 40, and is long enough not to expose the tip portion 12a of the needle 12. The lower limit is the length, and the upper limit is a length that exposes part of the slope of the distal end portion 12a of the needle 12 in a state where the tube portion 41a is partly raised in the needle mounting portion 40. It is a thing. More specifically, the length of the tube portion 41a is set longer than the tip portion 12a of the needle 12 by about half (about 0.6 mm) of the gap in the concave portion 41c of the needle protection portion 41 described above, within the range described above. is preferred. Moreover, instead of exposing the tip 12a of the needle 12, the tip of the tube 41a is preferably tapered so that the position of the center point of the arc can be easily determined in drawing work.

ガイド部４１ｂは、針固定部４２の埋入部４２ｂを挿入する深さを備えた凹部４１ｃと、凹部４１ｃ内の内周面上に弾性部材６０の端部を受けるために形成された段部４１ｄと、を有する。 The guide portion 41b includes a recess 41c having a depth into which the embedded portion 42b of the needle fixing portion 42 is inserted, and a stepped portion 41d formed on the inner peripheral surface of the recess 41c for receiving the end portion of the elastic member 60. and have

ガイド部４１ｂの凹部４１ｃは、管部４１ａの他端側に形成された柱状体であり、この柱状体の上端から長手方向に切り欠いて断面略Ｕ字状に形成され、針固定部４２の埋入部４２ｂを挿入しうる程度の深さを有する。この凹部４１ｃの底面から埋入部４２ｂの先端に当接するまでの距離は、図３に示すように、針保護部４１の管部４１ａの昇降する移動距離であるストローク長Ｌを規定するものであり、本実施形態のような針１２の場合、針１２の先端部１２ａの一部のみを露出するようにするため、最大で約１．２ｍｍ程度のストローク長Ｌからなる隙間を設けることが好適である。 The concave portion 41c of the guide portion 41b is a columnar body formed on the other end side of the tube portion 41a. It has a depth to which the embedded portion 42b can be inserted. As shown in FIG. 3, the distance from the bottom surface of the recess 41c to the contact with the tip of the embedding portion 42b defines the stroke length L, which is the moving distance of the tube portion 41a of the needle protection portion 41 up and down. In the case of the needle 12 of this embodiment, it is preferable to provide a gap having a stroke length L of about 1.2 mm at the maximum in order to expose only a portion of the tip 12a of the needle 12. be.

（針保護部昇降機構）
次に、上述した針保護部４１の管部４１ａを針取付部４０から針１２の長手方向に沿って昇降自在とする針保護部昇降機構を図１－４に基づいて説明する。この針保護部昇降機構は、針保護部４１を紙面Ｓに押し付けたときに、針保護部４１を針取付部４０内に上昇させることで針１２の先端部１２ａの一部のみを露出させるものであって、針１２の基端部１２ｂを固定して針取付部４０内に内装された針固定部４２と、針固定部４２と針保護部４１のガイド部４１ｂとの間に介装された弾性部材６０と、を主要部として構成されるものである（特に図３、４参照）。 (Needle protector lift mechanism)
Next, a needle protection part elevating mechanism that allows the tube part 41a of the needle protection part 41 to move up and down along the longitudinal direction of the needle 12 from the needle mounting part 40 will be described with reference to FIGS. 1-4. This needle protection part elevating mechanism lifts the needle protection part 41 into the needle mounting part 40 when the needle protection part 41 is pressed against the paper surface S, thereby exposing only a part of the tip part 12a of the needle 12. A needle fixing portion 42 that fixes the base end portion 12b of the needle 12 and is incorporated in the needle mounting portion 40, and is interposed between the needle fixing portion 42 and the guide portion 41b of the needle protection portion 41. and an elastic member 60 (especially see FIGS. 3 and 4).

針固定部４２は、針取付部４０の上端に嵌合する蓋部４２ａと、針１２の基端部１２ｂから中間位置付近までを埋入して固定する埋入部４２ｂと、の別体からなり、この蓋部４２ａには、蓋部４２ａの裏面から下方に突出する凸状の挿入片４２ａ１を有し、また、この埋入部４２ｂは、蓋部４２ａの挿入片４２ａ１を嵌挿するための挿入孔４２ｂ１を有することで、容易に組み立てることが可能である。 The needle fixing portion 42 is composed of a lid portion 42a fitted to the upper end of the needle mounting portion 40, and an embedding portion 42b that embeds and fixes the needle 12 from the base end portion 12b to the vicinity of the intermediate position. The lid portion 42a has a convex insertion piece 42a1 protruding downward from the back surface of the lid portion 42a, and the embedded portion 42b is an insertion portion for inserting the insertion piece 42a1 of the lid portion 42a. By having the hole 42b1, it is possible to easily assemble.

針固定部４２の埋入部４２ｂの外側面には、針取付部４０の係合孔４０ａに対して係合して、針取付部４０の外側面方向に突出する爪部４２ｃ、４２ｃを有することで、針取付部４０内に固定される。これに対して、針保護部４１は、針取付部４０内に固定されておらず、針固定部４２との間に介装された弾性部材６０によって針取付部４０から突出するようにガイド部４１ｂが付勢されているため針１２の長手方向に沿って昇降自在とすることが可能である。 The outer surface of the embedding portion 42b of the needle fixing portion 42 has claw portions 42c, 42c that engage with the engagement hole 40a of the needle mounting portion 40 and protrude in the direction of the outer surface of the needle mounting portion 40. , and is fixed within the needle mounting portion 40 . On the other hand, the needle protection portion 41 is not fixed in the needle mounting portion 40 and is protruded from the needle mounting portion 40 by the elastic member 60 interposed between the needle fixing portion 42 and the guide portion. Since 41b is energized, needle 12 can be moved up and down along the longitudinal direction.

弾性部材６０は、コンパスの使用者が紙面Ｓに針１２の先端部１２ａを突き刺すことができる程度の刺突力を加えることで針保護部４１のみを針取付部４０内で上昇させるとともに、紙面Ｓに押し付けてない状態において針保護部４１の管部４１ａを下降させるように円滑な昇降移動を行うことが可能な付勢力を備えたものである。この弾性部材６０は、より具体的には、金属材からなる線径０．３ｍｍ程度の線材を巻数７から９とし、付勢力を生じない状態で全長５．５ｍｍ、直径３．０ｍｍ程度のコイルばねとすることが好適である。 The elastic member 60 applies a piercing force to the extent that the user of the compass can pierce the paper surface S with the tip 12a of the needle 12, thereby lifting only the needle protection portion 41 within the needle mounting portion 40 and moving the paper surface. It has an urging force capable of smoothly moving up and down so as to lower the tube portion 41a of the needle protection portion 41 in a state where it is not pressed against S. More specifically, the elastic member 60 is made of a metal wire having a wire diameter of about 0.3 mm and having 7 to 9 turns. A spring is preferred.

上述した針保護部昇降機構による針保護部４１が針取付部４０内に上及び下降した状態について図３、４、５に基づいて説明する。 3, 4, and 5, the states in which the needle protection portion 41 is raised and lowered into the needle mounting portion 40 by the needle protection portion elevating mechanism described above will be described.

図４に示すように、円弧の描き始めの場合には、コンパスを紙面Ｓに対してほぼ垂直に針保護部４１の管部４１ａの先端を押し付ける。そのとき、針１２の先端部１２ａを紙面Ｓに当接するまで、針保護部昇降機構における弾性部材６０の付勢力に抗しながら針取付部４０内で管部４１ａの基端側を上昇させることで、針１２の先端部１２ａの露出した部分で紙面Ｓに突き刺すことが可能である。 As shown in FIG. 4, when starting to draw an arc, the tip of the tube portion 41a of the needle protection portion 41 is pressed against the plane S of the compass substantially perpendicularly. At this time, the base end side of the tube portion 41a is raised within the needle mounting portion 40 while resisting the biasing force of the elastic member 60 in the needle protection portion lifting mechanism until the tip portion 12a of the needle 12 contacts the paper surface S. , it is possible to pierce the paper surface S with the exposed portion of the tip portion 12a of the needle 12 .

また、図３、５に示すように、中心脚１０や回転脚２０を閉じた状態の場合においては、針１２の先端部１２ａを紙面Ｓから離すと同時に、針保護部昇降機構における弾性部材６０によって針１２の先端部１２ａまで被覆するように針保護部４１の管部４１ａを下降させる。これによって、不使用時において針１２の先端部１２ａを露出せず、針１２の周囲全体を被覆することが可能である。 3 and 5, when the central leg 10 and the rotary leg 20 are closed, the tip 12a of the needle 12 is separated from the paper surface S, and at the same time, the elastic member 60 of the needle protection portion elevating mechanism is lifted. , the tube portion 41a of the needle protection portion 41 is lowered so as to cover the needle 12 up to the tip portion 12a. This makes it possible to cover the entire circumference of the needle 12 without exposing the tip 12a of the needle 12 when not in use.

したがって、上述した針保護部昇降機構によって、不使用時には針１２の先端部１２ａまで針保護部４１の管部４１ａを被覆することで安全に使用することができるとともに、針１２の先端部１２ａを露出するためにノック等の手順を要することなく、針１２の先端部１２ａを押し付ける動作と連動して針１２の先端部１２ａを露出させることができるため、従来のコンパスと同様に、円弧の作図作業を行うことが可能である。 Therefore, the needle protection part elevating mechanism described above covers the tube part 41a of the needle protection part 41 up to the tip part 12a of the needle 12 when not in use, so that the tip part 12a of the needle 12 can be safely used. Since the tip portion 12a of the needle 12 can be exposed in conjunction with the operation of pressing the tip portion 12a of the needle 12 without requiring a procedure such as knocking to expose it, it is possible to draw an arc like a conventional compass. It is possible to work.

上記の実施形態では本発明の好ましい実施形態を例示したが、本発明は上記の実施形態に限定されるものではなく、特許請求の範囲に記載した範囲内で改善や変更が可能である。例えば、弾性部材６０をコイルばねの代わりにゴムなどからなる弾性筒状体とすることや、中心脚本体１１及び回転脚本体２１の途中を折り曲げ自在とすることも可能である。 Although the preferred embodiments of the present invention have been illustrated in the above embodiments, the present invention is not limited to the above embodiments, and improvements and modifications are possible within the scope of the claims. For example, the elastic member 60 may be an elastic cylindrical body made of rubber or the like instead of the coil spring, or the middle of the central leg body 11 and the rotary leg body 21 may be freely bent.

10 中心脚、11 中心脚本体、12 針、12a 先端部、12b 基端部、
20 回転脚、21 回転脚本体、
30 操作体、31 軸部、
40 針取付部、40a 係合孔、
41 針保護部、41a 管部、41b ガイド部、41c 凹部、41d 段部、
42 針固定部、42a 蓋部、42a1 挿入片、42b 埋入部、42b1 挿入孔、42c 爪部、
L ストローク長、
50 筆記具（鉛筆）、
60 弾性部材、
70 筆記具保持部、
S 紙面、α、β 角度。 10 central leg, 11 central script body, 12 needle, 12a distal, 12b proximal,
20 rotating leg, 21 rotating script body,
30 operating bodies, 31 shafts,
40 Needle attachment part, 40a engagement hole,
41 needle protection part, 41a tube part, 41b guide part, 41c concave part, 41d stepped part,
42 needle fixing part, 42a cover part, 42a1 insertion piece, 42b insertion part, 42b1 insertion hole, 42c claw part,
L stroke length,
50 writing instruments (pencils),
60 elastic members,
70 writing instrument holder,
S plane, α, β angles.

Claims (3)

先端に針を持つ中心脚と、筆記具を保持する筆記具保持機構を有し前記中心脚周りに回転させる回転脚と、前記回転脚及び前記中心脚を開閉自在に軸支する操作体と、を備えてなり、
前記中心脚は、中心脚本体と、前記中心脚本体の先端に設けられた針取付部と、を有し、
前記針取付部は、前記針の周囲を被覆する管部及び前記針取付部内に内挿されたガイド部を備えた針保護部と、前記針保護部を前記針の長手方向に沿って付勢力を備えた弾性部材によって昇降自在とする針保護部昇降機構と、を有し、
前記針保護部昇降機構は、前記針保護部と、前記針の基端部を固定して前記針取付部内に内装された針固定部と、前記針固定部と前記針保護部の前記ガイド部との間に介装された前記弾性部材と、を有し、前記針を突き刺すことで前記針保護部のみを上昇させ、前記弾性部材の付勢力により下降させることを特徴とするコンパス。 a central leg having a needle at its tip; a rotating leg having a writing instrument holding mechanism for holding a writing instrument and rotating around the central leg; and an operating body pivotally supporting the rotating leg and the central leg to open and close freely. serve,
The central leg has a central leg and a needle mounting portion provided at the tip of the central leg,
The needle mounting portion includes a needle protection portion having a tube portion covering the periphery of the needle and a guide portion inserted into the needle mounting portion , and a biasing force acting on the needle protection portion along the longitudinal direction of the needle. a needle protection part lifting mechanism that can be lifted and lowered by an elastic member including
The needle protection part elevating mechanism includes the needle protection part, a needle fixing part that fixes the proximal end of the needle and is installed inside the needle mounting part, and the guide part of the needle fixing part and the needle protection part. and the elastic member interposed between the compass, wherein only the needle protection portion is raised by piercing the needle and lowered by the biasing force of the elastic member. 針保護部の管部は、先端を先細り形状にすることを特徴とする請求項１に記載のコンパス。 2. The compass according to claim 1, wherein the tube portion of the needle protector has a tapered tip. 針取付部は、中心脚本体に一体形成された筒状体であり、前記筒状体の中心軸方向は前記中心脚本体の長手方向に対して鋭角をなすように傾斜することを特徴とする請求項１に記載のコンパス。 The needle mounting portion is a cylindrical body integrally formed with the central leg body, and the central axis direction of the cylindrical body is inclined so as to form an acute angle with respect to the longitudinal direction of the central leg body. A compass according to claim 1.
JP2020121563A 2020-07-15 2020-07-15 compass Active JP7280620B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020121563A JP7280620B2 (en) 2020-07-15 2020-07-15 compass
CN202011378644.6A CN113942332B (en) 2020-07-15 2020-11-30 Compasses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020121563A JP7280620B2 (en) 2020-07-15 2020-07-15 compass

Publications (2)

Publication Number Publication Date
JP2022018453A JP2022018453A (en) 2022-01-27
JP7280620B2 true JP7280620B2 (en) 2023-05-24

Family

ID=79327210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020121563A Active JP7280620B2 (en) 2020-07-15 2020-07-15 compass

Country Status (2)

Country Link
JP (1) JP7280620B2 (en)
CN (1) CN113942332B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3184844U (en) 2013-05-09 2013-07-18 株式会社大阪クリップ compass
JP3191876U (en) 2014-05-02 2014-07-17 クツワ工業株式会社 compass

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11240293A (en) * 1998-02-26 1999-09-07 Zaza International:Kk Compass
US6311404B1 (en) * 1998-10-30 2001-11-06 Paul A. Smith Retractable safety mechanism and compass and method of using the same
TWM449715U (en) * 2012-10-05 2013-04-01 Yu Kuang Chemical Industry Corp Compass
CN202911389U (en) * 2012-10-17 2013-05-01 徐国仁 Compasses
CN203185933U (en) * 2013-04-07 2013-09-11 吕珠琦 Safe compasses
CN203681083U (en) * 2014-01-10 2014-07-02 哈尔滨学院 Safe compasses with steel needle capable of being rebounded
CN209869860U (en) * 2019-01-07 2019-12-31 酒泉金惠科技传媒有限责任公司 Teaching compasses capable of drawing rapidly
CN210970460U (en) * 2019-10-15 2020-07-10 张琳艳 Anti-accidental injury compasses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3184844U (en) 2013-05-09 2013-07-18 株式会社大阪クリップ compass
JP3191876U (en) 2014-05-02 2014-07-17 クツワ工業株式会社 compass

Also Published As

Publication number Publication date
CN113942332A (en) 2022-01-18
CN113942332B (en) 2023-04-21
JP2022018453A (en) 2022-01-27

Similar Documents

Publication Publication Date Title
JP7280620B2 (en) compass
US4984379A (en) Pen structure with a flag
JP7454077B2 (en) pen type compass
JP5284899B2 (en) Writing instrument
KR20070100078A (en) Knock device for non-nois of ball-point pen
JP7280621B2 (en) compass
KR100663123B1 (en) Mini ballpoint pen
JP5469495B2 (en) Writing instrument clip structure
JP2596661Y2 (en) Seal
JP4574972B2 (en) Intrusive writing instrument
JPS6339099Y2 (en)
JP3080608U (en) Pen tip extension mechanism for ballpoint pen
JP4906070B2 (en) seal
CN213962791U (en) Quilt fixer
KR200419478Y1 (en) Silent knocking device of ballpoint pen
KR101824366B1 (en) A writing instrument in which a yuhigu is operated when the ballpoint pen protrudes
JP5508776B2 (en) Writing instrument
JP5121175B2 (en) mechanical pencil
KR200176087Y1 (en) A writing implement
JPH0120153Y2 (en)
JPH09511188A (en) Writing instrument
JP2023115142A (en) writing instrument
JPS5830719Y2 (en) Shape pencil
RU39536U1 (en) PEN
JP3099893U (en) Lighter with windshield and adapter for lighter

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20220420

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20230131

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230213

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20230327

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20230410

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20230502

R150 Certificate of patent or registration of utility model

Ref document number: 7280620

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150