JP2003251995A - Drafting instrument - Google Patents
Drafting instrumentInfo
- Publication number
- JP2003251995A JP2003251995A JP2002054346A JP2002054346A JP2003251995A JP 2003251995 A JP2003251995 A JP 2003251995A JP 2002054346 A JP2002054346 A JP 2002054346A JP 2002054346 A JP2002054346 A JP 2002054346A JP 2003251995 A JP2003251995 A JP 2003251995A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- dead center
- needle cover
- cover
- leg
- 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.)
- Granted
Links
Landscapes
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
- Pens And Brushes (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、コンパスやデバイ
ダのように針を有する製図用具において、例えばコンパ
スの不使用時において脚部下端から突出する中心針を覆
い隠すことで、誤って手を刺す等の針刺し等の危険をな
くして取扱い上の安全性を確保する針カバーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drafting tool having a needle such as a compass or a divider, for example, when the compass is not used, the central needle protruding from the lower end of the leg is covered up to erroneously stab a hand. The present invention relates to a needle cover that eliminates the danger of needle sticks, etc. and ensures safety in handling.
【０００２】[0002]
【従来の技術】従来から、コンパス等の製図用用具にお
いて、針による事故を防ぐ未然に防ぐ対策が種々行われ
ている。例えば安全針カバーを備えたコンパスとしては
実開平３−６２８９７号公報等において知られている。
この実開平３−６２８９７号公報において公表されてい
るコンパスは、中心針を突出状に具備する針脚の該中心
針の回りに同中心針の向きと平行に人為的な強制力で上
下スライド自在に針カバーを具備し、この針カバーの内
面と前記針脚の表面には針カバーの脱落を防ぐ外れ阻止
機能と針カバーの中心針を被覆する下死点位置と中心針
を露出する上死点位置との案内機能を果たす長溝と小突
起とを夫々設けてなる。つまり、不使用時には小突起が
長溝の下端に係合する針カバーの下死点位置までスライ
ドさせることで、中心針を被覆し、針刺し等の事故を防
ぐようにしてある。そして、使用する時には小突起が長
溝の上端に係合する針カバーの上死点位置までスライド
させることで、中心針が針カバー下端の出没口から外部
に突出するようにしてある。2. Description of the Related Art Conventionally, in drafting tools such as compasses, various measures have been taken to prevent accidents caused by needles. For example, a compass equipped with a safety needle cover is known from Japanese Utility Model Laid-Open No. 3-62897.
The compass disclosed in Japanese Utility Model Laid-Open No. 3-62897 is vertically slidable around the central needle of a projecting leg having a central needle in parallel with the direction of the central needle by artificial force. The needle cover is equipped with a needle cover, and the inner surface of the needle cover and the surface of the needle leg have a disengagement prevention function that prevents the needle cover from falling off, a bottom dead center position that covers the center needle of the needle cover, and a top dead point that exposes the center needle. A long groove and a small protrusion that perform a guiding function with respect to a point position are provided respectively. That is, when not in use, the small protrusion slides to the bottom dead center position of the needle cover where it engages with the lower end of the long groove, thereby covering the central needle and preventing accidents such as needle sticks. When used, the small protrusion is slid to the top dead center position of the needle cover where the small protrusion engages with the upper end of the long groove, so that the central needle projects to the outside from the slot at the lower end of the needle cover.
【０００３】[0003]
【発明が解決しようとする課題】しかし乍ら、上記した
従来のコンパスは、中心針を被覆する下死点位置と中心
針を突出する上死点位置に針カバーを夫々保持するその
保持は針脚を抱持する横断面が略コの字状を呈する針カ
バー内面の針脚外面に対する摩擦抵抗によるものであ
る。従って、従来においては針脚に対する針カバーの面
摩擦による摩擦抵抗を大きくすることが必須であること
から、針カバーの動きが鈍い。そのために、針カバーを
スライドさせる際には針カバーを挟み込むようにしっか
り掴み、もう一方の手で針脚をしっかり掴まないと、針
カバーをその下死点、上死点位置へとスライドさせるこ
とができない取扱い性の面で問題が発生したり、特に小
学生等の子供（学童）にとっては針カバーを動かすこと
が困難になるばかりか、針カバーを動かすことだけに気
が取られて突出する針が指や手の平に刺さる危険を伴う
恐れがあった。However, in the above-described conventional compass, the needle cover is held at the bottom dead center position for covering the center needle and the top dead center position for projecting the center needle. This is due to the frictional resistance between the inner surface of the needle cover and the outer surface of the needle leg, which has a substantially U-shaped cross section for holding the leg. Therefore, conventionally, it is essential to increase the frictional resistance due to the surface friction of the needle cover with respect to the needle leg, so that the movement of the needle cover is slow. Therefore, when sliding the needle cover, firmly grasp the needle cover so as to sandwich it, and unless you firmly grasp the needle leg with the other hand, slide the needle cover to its bottom dead center or top dead center position. A problem occurs in terms of handleability, especially for children such as elementary school children (school children), it becomes difficult to move the needle cover, and the needle that is distracted only by moving the needle cover protrudes. Could be stabbed in your finger or palm.
【０００４】又、従来のコンパスは、面摩擦による下死
点、上死点位置における針カバーの保持に加えて、針を
被覆したり、露出させる針カバーの操作が前述したよう
に針の向きと平行とする上下方向のスライドのみである
が故に、針カバーの前端部（針先被覆部）には底面視が
略Ｕ字状に開口する針を突出させたり、没入させる出没
口が必須である。従って、コンパスを誤って床等に落と
してしまった際の衝撃により針カバーが動き、収容状態
で被覆されていたはずの針が出没口から突出し、針が飛
び出していることに気が付かずに拾うとした時に誤って
刺す等の危険があり、取扱い上の安全対策が必要であっ
た。Further, in the conventional compass, in addition to holding the needle cover at the bottom dead center and top dead center positions due to surface friction, the operation of the needle cover for covering and exposing the needle is performed as described above. Since it only slides up and down in parallel with the above, it is essential that the front end of the needle cover (needle tip covering part) has a protruding / withdrawing port for projecting or retracting the needle that opens in a substantially U shape in bottom view. is there. Therefore, when the compass is accidentally dropped on the floor, the needle cover moves due to the impact, and the needle that should have been covered in the accommodated state protrudes from the slot, and you can pick it up without noticing that the needle is protruding. There was a risk of accidentally sticking when doing so, and it was necessary to take safety measures in handling.
【０００５】本発明はこの様な従来事情に鑑みてなされ
たもので、その目的とする処は、針を被覆する下死点位
置と露出させる上死点位置に針カバーをスムーズに且つ
片手で簡単に動かすことができ、しかも、下死点と上死
点との両位置に針カバーをしっかり係止保持することが
でき、更には万が一床等に落下させた場合でも針が飛び
出すことを確実に防止し得るように安全対策と取扱い性
を改善したコンパスやデバイダ等の製図用具を提供する
ことにある。The present invention has been made in view of such conventional circumstances, and the object thereof is to smoothly and with one hand hold the needle cover at the bottom dead center position where the needle is covered and at the top dead center position where the needle is exposed. It can be easily moved, and the needle cover can be firmly locked and held at both bottom dead center and top dead center, and the needle will surely pop out even if it is dropped on the floor etc. It is to provide drafting tools such as compasses and dividers that have improved safety measures and handleability so that they can be prevented.
【０００６】[0006]
【課題を達成するための手段】課題を達成するために本
発明は、コンパスやデバイダのように針を有する製図用
具において、前記針を有する針脚と、この針脚方向に揺
動可能で且つ上下方向にスライド可能に具備される針カ
バーとの間に、針を被覆する針カバーの下死点位置と、
針を露出する針カバーの上死点位置との上下二点で交互
に且つ係脱自在に係止する係止部を設けていることであ
る。In order to achieve the object, the present invention provides a drafting tool having a needle, such as a compass or a divider, which has a needle leg having the needle and is swingable in the direction of the needle leg. Between the needle cover that is slidable in the vertical direction, the bottom dead center position of the needle cover that covers the needle, and
That is, there is provided a locking portion that alternately and disengageably locks at two points above and below the top dead center position where the needle cover is exposed.
【０００７】又、本発明は、コンパスやデバイダのよう
に針を有する製図用具において、前記針を有する針脚
と、該針を被覆する横断面が略コの字状を呈する針カバ
ーとの間に、該針カバーを上下方向にスライド可能で且
つ針脚方向に揺動可能に保持する保持部を設け、更に前
記針脚と針カバーとの間に、針を被覆する下死点位置に
針カバーをスライド前進させて該針カバーにおける揺動
中心の前半部側を押圧揺動させた時に係脱自在に係止す
る下死点用係止部と、前記揺動中心の後半部側を押圧揺
動させて針を露出する上死点位置に針カバーをスライド
後退させた時に係脱自在に係止する上死点用係止部とを
設けていることである。Further, the present invention provides a drafting tool having a needle, such as a compass or a divider, between a needle leg having the needle and a needle cover having a substantially U-shaped cross section for covering the needle. A holding portion for holding the needle cover slidably in the vertical direction and swingable in the needle leg direction, and further, between the needle leg and the needle cover, a needle is provided at a bottom dead center position for covering the needle. The bottom dead center locking part that engages and disengages freely when the cover is slid forward and the front half of the swing center of the needle cover is swung, and the rear half of the swing center is pressed. A top dead center locking portion that locks detachably when the needle cover is slid and retracted at a top dead center position where the needle is exposed by swinging.
【０００８】又、上記下死点用と上死点用の両係止部
は、互いに嵌り合う凸部と凹部からなり、その一方を針
カバー側に、もう一方を針脚側における針カバーの下死
点位置と上死点位置とに設けることにより、針を被覆す
る下死点位置と針を露出する上死点位置とに針カバー
を、凸部と凹部との係止ロック状態でしっかり保持し得
るようにしたことである。The bottom dead center and top dead center engaging portions are formed of a convex portion and a concave portion that are fitted to each other, one of which is on the needle cover side and the other is on the needle leg side of the needle cover. By providing the position at the bottom dead center position and the top dead center position, the needle cover is securely attached at the bottom dead center position where the needle is covered and the top dead center position where the needle is exposed, with the convex lock and the concave lock locked. That is to make it possible to hold.
【０００９】又、上記針カバーは、弾性と適宜の剛性を
有する材料から横断面が略コの字状に形成され、その揺
動中心の前半部側における両側辺部に下死点用と上死点
用の両係止部を備え、且つ、前半部側にその下端から両
側辺部を左右に分割するスリットを設けることにより、
前記両係止部の係止力の確実性と長期に亘る安定性（耐
久性の向上）を確保するようにしたことである。Further, the needle cover is formed of a material having elasticity and appropriate rigidity into a substantially U-shaped cross section, and has a bottom dead center and a top dead center on both sides on the front half side of the swing center. By providing both dead part locking parts, and by providing a slit on the front half side that divides both side parts from the lower end to the left and right,
The certainty of the locking force of both the locking portions and the stability (improvement of durability) for a long period of time are ensured.
【００１０】[0010]
【発明の実施の形態】本発明の実施の具体例を図面に基
づいて説明する。図１は本発明針を有する製図用具の一
例としてコンパスを示し、針１を有する針脚２、筆記脚
３、この両脚２，３の開閉枢着部４、この枢着部４の上
面中央に備えられる摘み５とを備える周知の構成を成
し、針１が突出する針脚２の下端側に針カバー６を揺動
可能で且つ上下スライド可能に装着してある。因みに、
コンパスとして例えば図示したように筆記脚３にシャー
プ3-1を備えるシャープタイプ、鉛筆を取り付ける鉛筆
ホルダーを備える鉛筆タイプ、そして鉛筆の芯を取り付
ける芯ホルダーを備える芯タイプ等が挙げられる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific example of the embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a compass as an example of a drawing tool having a needle according to the present invention. A companion leg 2 having a needle 1, a writing leg 3, an opening / closing pivot portion 4 of the legs 2 and 3, and a center of an upper surface of the pivot portion 4. In the well-known configuration including the knob 5 provided, a needle cover 6 is attached to the lower end side of the needle leg 2 from which the needle 1 projects so as to be swingable and vertically slidable. By the way,
Examples of the compass include a sharp type including a sharp leg 3-1 on the writing leg 3 as illustrated, a pencil type including a pencil holder for attaching a pencil, and a lead type including a lead holder for attaching a pencil lead.
【００１１】そして、針１が突出する下端から針カバー
６の上下スライド範囲における針脚２の下端側の横断面
形状を図２に示すように、幅広部2-1と幅狭部2-2とから
略凸状に形成し、その幅広部2-1の上方部位両側面に針
カバー６を上下スライド可能で且つ針脚２方向に揺動可
能に保持する保持部７を設けると共に、幅狭部2-2の下
端両側面には針カバー６のスライド下死点用と上死点用
の係止部８，９を設ける。As shown in FIG. 2, the cross-sectional shape of the lower end side of the needle leg 2 in the vertical slide range of the needle cover 6 from the lower end where the needle 1 projects is shown in FIG. 2 as a wide portion 2-1 and a narrow portion 2-2. And a holding portion 7 for holding the needle cover 6 slidably up and down and swingably in the needle leg 2 direction, is formed on both side surfaces of the upper portion of the wide portion 2-1. Locking portions 8 and 9 for the slide bottom dead center and the top dead center of the needle cover 6 are provided on both sides of the lower end of the portion 2-2.
【００１２】針カバー６は、針脚２方向の揺動と上下方
向のスライドとの双方操作により、針１を被覆したり、
針１を露出させるものであり（図４（ａ）、（ｃ）参
照）、優れた弾性（復元力）と適宜の剛性（耐磨耗性と
弾性力を維持する耐久強度）を有する合成樹脂材料等の
成形材料、例えばポリプロピレンやポリカーボネート等
の熱可塑性樹脂材料を用いて前端（下端）に、閉鎖する
針先被覆部6-1を有する所定の長さの横断面略コの字状
に形成してある。又、針先被覆部6-1が連設する針カバ
ー６の前半部側における両側辺部6-2の肉厚を内方に向
けて厚く形成することで、該前端側内部に針脚２の幅狭
部2-2の幅に相当する内寸法で該幅狭部2-2に嵌り合って
スライドする幅狭溝部10を設け、この幅狭溝部10の溝両
内面の上下2箇所には下死点用と上死点用の係止部８，
９を設ける。The needle cover 6 covers the needle 1 by both swinging in the direction of the needle leg 2 and sliding vertically.
A synthetic resin that exposes the needle 1 (see FIGS. 4A and 4C) and has excellent elasticity (restoring force) and appropriate rigidity (wear resistance and durable strength that maintains elastic force). Using a molding material such as a material, for example, a thermoplastic resin material such as polypropylene or polycarbonate, having a needle tip coating portion 6-1 at the front end (lower end), which is formed into a U-shape with a predetermined cross-section I am doing it. Further, by forming the thickness of both side portions 6-2 on the front half side of the needle cover 6 to which the needle tip coating portion 6-1 is continuously provided to be thicker inward, the needle leg 2 is formed inside the front end side. The narrow groove portion 10 that fits into the narrow portion 2-2 and slides with the inner dimension corresponding to the width of the narrow portion 2-2 is provided at two positions above and below the inner surfaces of both grooves of the narrow groove portion 10. Locking parts 8 for bottom dead center and top dead center,
9 is provided.
【００１３】又、針カバー６の両側辺部6-2の開放端縁
部の側面視形状を、針先被覆部6-1に連設する前端側か
ら長さ方向後端側に向けて略ヘの字状に形成した後、上
辺部6-3の後端に向けて略湾曲状に連設させてなり、針
カバー６の前後長さ方向中央部位より後方に位置する前
記湾曲縁6-21部とヘの字状縁部6-20との連設コーナー部
位における両側辺部6-2の内面に、針カバー６を上下方
向にスライド可能で且つ針脚２方向に揺動可能に保持す
る保持部７を設ける。Further, the side view shape of the open end edges of the both side portions 6-2 of the needle cover 6 is approximately from the front end side continuously provided to the needle tip covering portion 6-1 toward the rear end side in the longitudinal direction. After being formed into a V-shape, the curved edge 6- is formed by being continuously provided in a substantially curved shape toward the rear end of the upper side portion 6-3 and located behind the central portion of the needle cover 6 in the longitudinal direction. The needle cover 6 is held on the inner surface of both side portions 6-2 at the corner portion where 21 parts and the V-shaped edge portion 6-20 are continuously connected so as to be vertically slidable and swingable in the needle leg 2 direction. The holding part 7 is provided.
【００１４】図中11は、図示したように針カバー６の針
先被覆部6-1を有するその前端から上辺部6-3の幅中央に
沿って前半部側に設けたスリットであり、このスリット
11を設けることにより、針カバー６の下死点用と上死点
用の係止部８，９の後述する凹部8-1，9-1と凸部8-2，9
-2との係脱自在な係止力の確実性と長期に亘る安定性
（耐久性の向上）を確保するものである。又、図中12
は、針カバー６の上辺部6-3に設けた滑り止めであり、
この滑り止め11に親指の指先（腹部）を沿えて揺動中心
Ｐを支点とする針カバー６における前半部側と後半部側
とを針脚２方向に押圧揺動させたり、上下方向にスライ
ド移動させる針カバー６の操作をスムーズに行い得るよ
うにしてある（図４参照）。Reference numeral 11 in the drawing denotes a slit provided from the front end of the needle cover 6 having the needle tip covering portion 6-1 to the front half portion along the width center of the upper side portion 6-3, as shown in FIG. slit
By providing 11, the concave portions 8-1, 9-1 and the convex portions 8-2, 9 (to be described later) of the locking portions 8 and 9 for the bottom dead center and the top dead center of the needle cover 6 are provided.
-It secures the locking force that can be engaged and disengaged with -2 and the stability (improvement of durability) over a long period of time. Also, 12 in the figure
Is a slip stopper provided on the upper side 6-3 of the needle cover 6,
Along the fingertips (abdomen) of the thumb along the slip stopper 11, the front half and the rear half of the needle cover 6 having the swing center P as a fulcrum are pressed and swung in the direction of the needle leg 2 or vertically slid. The needle cover 6 to be moved can be smoothly operated (see FIG. 4).
【００１５】保持部７は、針カバー６を針脚２に対して
脱落不能な状態で上下方向にスライド可能に且つ針脚２
方向に揺動可能に保持する役目を成すものであり、針脚
２の幅広部2-1の後方部位に針カバー６の上下スライド
範囲にて設けた長溝7-1と、この長溝7-1の溝幅と深さに
相当する外径と高さにて針カバー６の前半部と後半部と
の間における両側辺部6-2の前述した内面に突設した突
起部7-2とで構成され、該突起部7-2を揺動中心として針
カバーの前半部側と後半部側が針脚２方向に押圧揺動し
得るようにしてある。つまり、長溝7-1の下端に突起部7
-2が係止される下死点位置まで針カバー６をスライド前
進させた後、突起部7-2を揺動中心Ｐとする針カバー６
の前半部側を押圧揺動させることで、針脚２の下端から
突出する針１を被覆し得るように、そして、この状態で
針カバー６における前記揺動中心Ｐの後半部側を押圧揺
動させることで、針１を露出させ且つ針を完全に露出さ
せる上死点位置へと針カバー６がスライド後退し得るよ
うにしてある。The holding portion 7 is slidable in the vertical direction in a state in which the needle cover 6 cannot be removed from the needle leg 2 and the needle leg 2 is provided.
And a long groove 7-1 provided in the rear portion of the wide portion 2-1 of the needle leg 2 in the vertical slide range of the needle cover 6, and the long groove 7-1. With the outer diameter and height corresponding to the groove width and depth of the needle cover 6, the protrusions 7-2 projecting on the above-mentioned inner surface of the side portions 6-2 between the front half and the rear half of the needle cover 6 are formed. The needle cover is configured so that the front half part and the rear half part of the needle cover can be pressed and oscillated in the direction of the needle leg 2 around the protrusion 7-2. That is, the protrusion 7 is formed at the lower end of the long groove 7-1.
After the needle cover 6 is slid forward to the bottom dead center position where -2 is locked, the needle cover 6 with the protrusion 7-2 as the swing center P
By pressing and swinging the front half of the needle leg 2, the needle 1 protruding from the lower end of the needle leg 2 can be covered, and in this state, the latter half of the swing center P of the needle cover 6 is pressed and swings. By moving the needle cover 6, the needle cover 6 can be slid and retracted to the top dead center position where the needle 1 is exposed and the needle is completely exposed.
【００１６】下死点用係止部８は、針１を被覆する下死
点位置に針カバー６をスライド前進させた後、針カバー
６における前記揺動中心Ｐの前半部側を押圧揺動させた
時に互いに嵌り合い係止せしめて針を被覆する針カバー
をしっかりとロック保持する役目を成すものである。こ
の係止部８は、針脚２の幅狭部2-2の前端両側面に設け
た凹部8-1と、針カバー６の幅狭溝部10の後端両内面に
設けた凸部8-2とで構成され、針カバーを上死点位置か
らスライド前進させた後、針カバー６における揺動中心
Ｐ（突起7-2）の前半部側（上辺部6-3前端側）を針脚方
向に押圧揺動させることで、互いに嵌り合い係止せしめ
て針１を被覆する針カバー６をロック保持するようにし
てある（図４（ｃ）の状態）。そして、針脚から浮き上
がり離間状態にある針カバーの後半部側（上辺部603後
端側）を針脚方向に押圧揺動せしめることで、その係止
状態が解除されるようにしてある（図４（ｂ）の状
態）。The bottom dead center locking portion 8 pushes and swings the front half of the swing center P of the needle cover 6 after sliding the needle cover 6 forward to the bottom dead center position where the needle 1 is covered. When they are made to fit, they are engaged with each other and locked to firmly lock and hold the needle cover that covers the needle. The locking portion 8 includes a concave portion 8-1 provided on both side surfaces of the front end of the narrow portion 2-2 of the needle leg 2 and a convex portion 8-1 provided on both inner surfaces of the rear end of the narrow groove portion 10 of the needle cover 6. 2 and, after the needle cover is slid forward from the top dead center position, the front half portion (upper side portion 6-3 front end side) of the swing center P (projection 7-2) of the needle cover 6 is moved to the needle leg. The needle cover 6 that covers the needle 1 is locked and held by pressing and swinging in the direction so that the needle cover 6 covers the needle 1 (the state of FIG. 4C). Then, the locked state is released by pressing and swinging the rear half side (upper side 603 rear end side) of the needle cover that is lifted and separated from the needle leg in the needle leg direction (Fig. 4 (b) state).
【００１７】上死点用係止部９は、前記揺動中心Ｐの後
半部側を押圧揺動させて下死点用係止部による針カバー
の係止ロック状態を解除させた後に、針１が完全に露出
する上死点位置に針カバーをスライド後退させた時に互
いに嵌り合い係止せしめて針をその上死点位置にしっか
りとロック保持する役目を成すものである。この係止部
９は、針脚２の幅狭部2-2の前端両側面に設けた前述し
た凹部9-1と、針カバー６の幅狭溝部10の前端両内面に
設けた凸部9-2とで構成され、針カバーを下死点位置か
らスライド後退させることで、互いに嵌り合い係止せし
めて針カバーをその上死点位置にロック保持するように
してある（図４（ａ）の状態）。そして、針カバー６の
上死点位置から下死点位置へとスライド前進させること
で、その係止状態が解除されるようにしてある（図４
（ａ）の実線から二点鎖線の状態）。The top dead center locking portion 9 pushes and rocks the rear half side of the rocking center P to release the locking lock state of the needle cover by the bottom dead center locking portion, and then the needle cover. When the needle covers are slid and retracted to the top dead center position where 1 is completely exposed, they are engaged with each other and locked to firmly hold the needle at the top dead center position. The locking portion 9 is provided with the above-mentioned concave portions 9-1 provided on both side surfaces of the front end of the narrow portion 2-2 of the needle leg 2 and the convex portions 9 provided on both inner surfaces of the front end of the narrow groove portion 10 of the needle cover 6. And -2, the needle cover is slid and retracted from the bottom dead center position so as to be fitted and locked to each other to lock and hold the needle cover at the top dead center position (Fig. 4 (a)). State). The locked state is released by sliding the needle cover 6 forward from the top dead center position to the bottom dead center position (FIG. 4).
(A) A solid line to a chain double-dashed line).
【００１８】次に、以上の如く構成した本実施例詳述の
コンパスの使用例を簡単に説明すると、使用後において
針脚２を人差し指、中指、薬指で掴み、親指に指先（腹
部）を針カバー６の上辺部6-3の滑り止め12に沿える
（図４（ａ）の実線から二点鎖線の状態）。この状態で
針カバー６を下死点位置までスライド前進させ（図４
（ｂ）の実線の状態）、その後揺動中心Ｐ（突起部7-
2）を支点に針カバー６の前半部側を針脚２方向に押圧
揺動させる（図４（ｂ）の二点鎖線の状態）。すると、
針カバー６の下死点用係止部８の凸部8-2が、針脚２の
下死点用係止部８の凹部８-1に嵌まり込み係止する。こ
れにより、針１を被覆する針カバー２は凹部８-1に対す
る凸部8-2の係止ロックによりしっかりと保持される。Next, a brief description will be given of an example of use of the compass having the above-described construction in detail. After use, the needle leg 2 is grasped with the index finger, middle finger, and ring finger, and the fingertip (abdomen) is held on the thumb. It is along the slip stopper 12 of the upper side portion 6-3 of the cover 6 (from the solid line to the alternate long and two short dashes line in FIG. 4A). In this state, the needle cover 6 is slid forward to the bottom dead center position (see FIG.
(State of solid line in (b)), then swing center P (projection 7-
The front half side of the needle cover 6 is pressed and oscillated in the direction of the needle leg 2 with the point 2) as the fulcrum (state of the chain double-dashed line in FIG. 4B). Then,
The convex portion 8-2 of the bottom dead center locking portion 8 of the needle cover 6 is fitted and locked in the recess 8-1 of the bottom dead center locking portion 8 of the needle leg 2. As a result, the needle cover 2 covering the needle 1 is firmly held by the locking lock of the convex portion 8-2 with respect to the concave portion 8-1.
【００１９】一方、使用する際には前述と同じく針脚２
を掴み、親指の指先を針脚２から浮き上がり離間する針
カバー６の上辺部6-3の後半部側に沿えて、揺動中心Ｐ
（突起部7-2）を支点に針カバー６の後半部側を針脚２
方向に押圧揺動させる（図４（ｃ）の状態から（ｂ）の
状態）。すると、針カバー６の下死点用係止部８の凸部
8-2が、針脚２の下死点用係止部８の凹部8-1から外れて
その係止状態が解除される（図４（ｂ）の二点鎖線の態
から実線の状態）。次に、親指を針カバー６の上辺部6-
3に沿えた状態で上死点位置へと針カバー６をスライド
後退させる（図４（ｂ）の状態から（ａ）の状態）。す
ると、針カバー６の上死点用係止部９の凸部9-1が、針
脚２の上死点用係止部９の凹部9-1に嵌まり込み係止す
る。これにより、針カバー６は凹部9-1に対する凸部9-2
の係止ロックによりしっかりと保持され、針１を露出さ
せた使用状態に保たれる。On the other hand, when using the needle leg 2 as described above.
Grip the fingertips of the thumb along the rear half of the upper side 6-3 of the needle cover 6 that floats up and separates from the needle leg 2, and swing center P
With the (projection 7-2) as a fulcrum, the second half of the needle cover 6 is attached to the needle leg 2
And oscillates in the direction (from the state of FIG. 4C to the state of FIG. 4B). Then, the protruding portion of the bottom dead center locking portion 8 of the needle cover 6
8-2 is disengaged from the concave portion 8-1 of the bottom dead center locking portion 8 of the needle leg 2 and the locked state is released (from the two-dot chain line state in FIG. 4B to the solid line state). . Next, place your thumb on the upper side 6-of the needle cover 6.
The needle cover 6 is slid back to the top dead center position along the line 3 (from the state of FIG. 4B to the state of FIG. 4A). Then, the convex portion 9-1 of the top dead center locking portion 9 of the needle cover 6 fits into the concave portion 9-1 of the top dead center locking portion 9 of the needle leg 2 and is locked. As a result, the needle cover 6 has a convex portion 9-2 with respect to a concave portion 9-1.
The lock is firmly held by the lock lock and the needle 1 is kept in the exposed use state.
【００２０】又、本発明においては図５に示したよう
に、針カバー６前端の針先被覆部6-1に略逆Ｕ字状の窓1
3を設けることも任意であり、この場合、針１を露出す
る上死点位置に針カバー６をスライド後退させた際、窓
13が針脚２の幅狭部2-2に針カバー６の幅狭溝部10と同
じく嵌り合うように、該幅狭部2-2を針１が突出する針
脚２の下端と面一になるように形成することが好まし
い。Further, in the present invention, as shown in FIG. 5, the window 1 having a substantially inverted U shape is formed in the needle tip coating portion 6-1 at the front end of the needle cover 6.
Provision of 3 is also optional, and in this case, when the needle cover 6 is slid and retracted to the top dead center position where the needle 1 is exposed,
The narrow portion 2-2 is flush with the lower end of the needle leg 2 from which the needle 1 projects so that 13 fits into the narrow portion 2-2 of the needle leg 2 as well as the narrow groove portion 10 of the needle cover 6. It is preferable to form it.
【００２１】図６は、前述実施例詳述のコンパスに変え
て、デバイスを示した本発明製図用具の他の実施例を示
す。基本的な構成においては前述した実施例詳述と同じ
ことから、同じ構成部分に同じ符号を用いることでその
詳細については省略する。FIG. 6 shows another embodiment of the drafting tool of the present invention showing a device in place of the compass described in the above embodiment. Since the basic configuration is the same as the detailed description of the above-described embodiment, the same reference numerals are used for the same components, and the details are omitted.
【００２２】[0022]
【発明の効果】本発明の針を有するコンパスやデバイス
のような製図用具は叙上の如く構成してなることから下
記の作用効果を奏する。本発明は針脚の下端から突出す
る針を被覆したり、露出させる針カバーの操作が、揺動
中心Ｐを支点とする針脚方向への揺動と、上下方向への
スライドとの二段構えで行いえるように構成してなるこ
とで、従来のように、針を突出させたり、没入させるた
めの出没口を針カバー前端部の針先被覆部に必ずしも設
ける必要がなくなる。従って、誤って床等に落としてし
まった際の衝撃により針カバーに後退する等の動きが生
じても針が外部に飛び出す危険はない。Since the drafting tool such as the compass or device having the needle of the present invention is constructed as described above, it has the following operational effects. According to the present invention, the operation of the needle cover for covering or exposing the needle protruding from the lower end of the needle leg is performed in two stages: swinging in the needle leg direction with the swing center P as a fulcrum and sliding vertically. Since it is configured so that it can be carried out by holding it, it is not necessary to always provide a retracting port for projecting or retracting the needle in the needle tip covering portion at the front end portion of the needle cover as in the conventional case. Therefore, there is no danger of the needle jumping out even if the needle cover moves backward due to the impact when it is accidentally dropped on the floor or the like.
【００２３】又、針を被覆する針カバーの下死点位置
と、針を露出させる上死点位置とにおける針カバーの針
脚に対する保持が、その下死点位置と上死点位置におい
て互いに嵌り合うように針脚と針カバーとの間に設けた
下死点用係止部と上死点用係止部との係止ロックにより
行われるように構成したことで、針カバーの針脚に対す
る抱持状態はラフで良い。即ち、従来のように、摩擦抵
抗によって針カバーをその下死点位置と上死点位置に保
持すると言った上下方向のスライドを鈍くする面摩擦構
造を採用せずに針カバーを針脚に組み込み具備すること
ができることで、強い力を必要とせずに、しかも片手操
作で針カバーを、針を被覆する下死点位置と、針を露出
させる上死点位置にスライドさせることができる。Also, the holding of the needle cover with respect to the needle leg at the bottom dead center position of the needle cover covering the needle and the top dead center position of exposing the needle is fitted to each other at the bottom dead center position and the top dead center position. Since it is configured to be locked by the locking portion for the bottom dead center and the locking portion for the top dead center that are provided between the needle leg and the needle cover so as to match, The hugging state can be rough. That is, unlike the conventional method, the needle cover is incorporated into the needle leg without adopting the surface friction structure for blunting the vertical slide, which holds the needle cover at the bottom dead center position and the top dead center position by friction resistance. Since the needle cover can be provided, the needle cover can be slid to the bottom dead center position where the needle is covered and the top dead center position where the needle is exposed, without requiring a strong force and with one hand operation.
【００２４】従って、本発明によれば、大人は勿論、小
学生等の子供（学童）にとっても簡単且つスムーズに針
カバーをスライドさせて針を被覆したり、針を露出させ
ることができる操作性に優れ、しかも万が一床等に落下
させた場合でも針が飛び出すことを確実に防止し得る安
全対策と取扱い性を更に向上させたコンパスやデバイス
のように針を有する製図用具を提供することができる。Therefore, according to the present invention, not only adults but also children (school children) such as elementary school students can easily and smoothly slide the needle cover to cover the needle and expose the needle. It is possible to provide a drafting tool having a needle such as a compass or a device, which is excellent and has a safety measure capable of reliably preventing the needle from popping out even if it is dropped on the floor or the like, and further improved handleability.
【図１】 本発明製図用具の実施形態の一例であるコン
パスを示す正面図であり、（ａ）は針を露出させた使用
状態、（ｂ）は針を被覆せしめた不使用状態FIG. 1 is a front view showing a compass which is an example of an embodiment of a drafting tool of the present invention, (a) is a usage state in which a needle is exposed, and (b) is a non-use state in which a needle is covered.
【図２】 要部の拡大横断面図で、（ａ）は図1の
（ａ）−（ａ）線断面図、（ｂ）は図1の（ｂ）−
（ｂ）線断面図2 is an enlarged cross-sectional view of a main part, (a) is a cross-sectional view taken along the line (a)-(a) of FIG. 1, and (b) is (b)-of FIG.
(B) Line sectional view
【図３】 針カバー単体を示す底面図FIG. 3 is a bottom view showing the needle cover alone.
【図４】 針カバーの動きを示す要部の拡大縦断面図
で、（ａ）は針を露出させた針カバーの上死点位置から
スライド前進させる状態を示す、（ｂ）は針を被覆する
針カバーの下死点位置へスライド前進させた針カバー
を、揺動中心を支点に下半部側を針脚方向に押圧揺動さ
せる状態を示す、（ｃ）は針を被覆した状態を示すFIG. 4 is an enlarged vertical cross-sectional view of a main part showing the movement of the needle cover, (a) shows a state of sliding forward from the top dead center position of the needle cover with the needle exposed, (b) covering the needle. The needle cover that is slid forward to the bottom dead center position of the needle cover is pressed and oscillated in the needle leg direction on the lower half side with the swing center as the fulcrum, and (c) shows the state in which the needle is covered. Show
【図５】 針カバーの針先被覆部に窓を設けた他の実施
例を示し、（ａ）は針を露出させた針カバーの上死点位
置からスライド前進させる状態を示す、（ｂ）は（ａ）
の（ｂ）−（ｂ）線拡大横断面図、（ｃ）は針を被覆す
る針カバーの下死点位置へスライド前進させた後に、揺
動中心を支点に下半部側を針脚方向に押圧揺動させて針
を被覆した状態を示すFIG. 5 shows another embodiment in which a window is provided in the needle tip covering portion of the needle cover, and (a) shows a state in which the needle is slid forward from the top dead center position of the exposed needle cover, (b). Is (a)
(B)-(b) line enlarged cross-sectional view, (c) shows the needle cover in the needle leg direction on the lower half side with the swing center as the fulcrum after sliding forward to the bottom dead center position of the needle cover. Shows the state in which the needle is covered by pressing and rocking
【図６】 コンパスに変えてデバイスを示す本発明製図
用具の他の実施例の正面図FIG. 6 is a front view of another embodiment of the drafting tool of the present invention showing a device instead of a compass.
１：針 ２：針脚
３：筆記脚 ４：開閉枢着部
５：摘み ６：針カバー
6-1：針先被覆部 6-2：両側辺部
6-3：上辺部 ７：保持部
7-1：長溝 7-2：突起部（揺動中心
Ｐ）
８：下死点係止部 8-1：凹部
8-2：凸部 ９：上死点係止部
9-1：凹部 9-1：凸部1: Needle 2: Needle leg 3: Writing leg 4: Opening / closing pivot part 5: Picking 6: Needle cover 6-1: Needle tip covering part 6-2: Both side parts 6-3: Upper side part 7: Holding part 7 -1: Long groove 7-2: Projection part (swing center P) 8: Bottom dead center locking part 8-1: Recessed part 8-2: Convex part 9: Top dead center locking part 9-1: Recessed part 9- 1: convex
Claims (4)
製図用具において、 前記針を有する針脚と、この針脚方向に揺動可能で且つ
上下方向にスライド可能に具備される針カバーとの間
に、針を被覆する針カバーの下死点位置と、針を露出す
る針カバーの上死点位置との上下二点で交互に且つ係脱
自在に係止する係止部を設けていることを特徴とする製
図用具。1. A drafting tool having a needle, such as a compass or a divider, between a needle leg having the needle and a needle cover that is swingable in the needle leg direction and vertically slidable. A locking portion that alternately and disengageably locks at two points above and below the bottom dead center position of the needle cover that covers the needle and the top dead center position of the needle cover that exposes the needle. A drawing tool characterized by.
製図用具において、 前記針を有する針脚と、該針を被覆する横断面が略コの
字状を呈する針カバーとの間に、該針カバーを上下方向
にスライド可能で且つ針脚方向に揺動可能に保持する保
持部を設け、 更に前記針脚と針カバーとの間に、針を被覆する下死点
位置に針カバーをスライド前進させて該針カバーにおけ
る揺動中心の前半部側を押圧揺動させた時に係脱自在に
係止する下死点用係止部と、前記揺動中心の後半部側を
押圧揺動させて針を露出する上死点位置に針カバーをス
ライド後退させた時に係脱自在に係止する上死点用係止
部とを設けていることを特徴とする製図用具。2. A drafting tool having a needle, such as a compass or a divider, comprising: a needle leg having the needle; and a needle cover having a substantially U-shaped cross section for covering the needle. A holding portion is provided for holding the cover slidably in the vertical direction and swingable in the needle leg direction. Further, the needle cover is slid forward to the bottom dead center position for covering the needle between the needle leg and the needle cover. Then, the bottom dead center engaging portion that engages and disengages when the front half side of the swing center of the needle cover is pressed and swung, and the rear half side of the swing center is pressed and swung. A drawing tool, comprising: a top dead center locking portion that locks detachably when the needle cover is slid and retracted at a top dead center position where the needle is exposed.
用の両係止部は、互いに嵌め合い係止する凸部と凹部か
らなり、その一方を針カバー側に、もう一方を針脚側に
おける針カバーの下死点位置と上死点位置とに設けてい
ることを特徴とする製図用具。3. The bottom dead center and top dead center locking portions according to claim 1 or 2 are composed of a convex portion and a concave portion that are fitted and locked with each other, one of which is provided on the needle cover side and the other of which is provided on the needle cover side. A drawing tool, wherein one is provided at a bottom dead center position and a top dead center position on the needle leg side.
は、弾性と適宜の剛性を有する材料から横断面が略コの
字状に形成され、その揺動中心の前半部側における両側
辺部に下死点用と上死点用の両係止部を備え、且つ、前
半部側にその下端から両側辺部を左右に分割するスリッ
トを設けていることを特徴とする製図用具。4. The needle cover according to any one of claims 1 to 3, wherein the cross section is formed in a substantially U-shape from a material having elasticity and appropriate rigidity, and the needle cover at the front half portion side of the swing center is formed. A drawing tool characterized in that both side edges are provided with both bottom dead center and top dead center locking portions, and slits are provided on the front half side to divide the side edges into left and right parts from the lower end thereof. .
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002054346A JP4033688B2 (en) | 2002-02-28 | 2002-02-28 | Drafting tools |
| TW91135022A TWI231791B (en) | 2002-02-28 | 2002-12-03 | Drafting apparatus |
| CN 02159550 CN1440878A (en) | 2002-02-28 | 2002-12-27 | Charting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002054346A JP4033688B2 (en) | 2002-02-28 | 2002-02-28 | Drafting tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003251995A true JP2003251995A (en) | 2003-09-09 |
| JP4033688B2 JP4033688B2 (en) | 2008-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002054346A Expired - Lifetime JP4033688B2 (en) | 2002-02-28 | 2002-02-28 | Drafting tools |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4033688B2 (en) |
| CN (1) | CN1440878A (en) |
| TW (1) | TWI231791B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006239951A (en) * | 2005-03-01 | 2006-09-14 | Ginchiyou Sangyo Kk | Covering device of draftman's outfit equipped with needle employed in compasses or dividers |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7308172B2 (en) * | 2020-04-28 | 2023-07-13 | 株式会社レイメイ藤井 | compass |
-
2002
- 2002-02-28 JP JP2002054346A patent/JP4033688B2/en not_active Expired - Lifetime
- 2002-12-03 TW TW91135022A patent/TWI231791B/en not_active IP Right Cessation
- 2002-12-27 CN CN 02159550 patent/CN1440878A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006239951A (en) * | 2005-03-01 | 2006-09-14 | Ginchiyou Sangyo Kk | Covering device of draftman's outfit equipped with needle employed in compasses or dividers |
| JP4542921B2 (en) * | 2005-03-01 | 2010-09-15 | 銀鳥産業株式会社 | Drafting tool cover device with needles such as compass and divider |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1440878A (en) | 2003-09-10 |
| TWI231791B (en) | 2005-05-01 |
| TW200303269A (en) | 2003-09-01 |
| JP4033688B2 (en) | 2008-01-16 |
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