JPH0690034B2 - Pendant manufacturing method - Google Patents
Pendant manufacturing methodInfo
- Publication number
- JPH0690034B2 JPH0690034B2 JP2130452A JP13045290A JPH0690034B2 JP H0690034 B2 JPH0690034 B2 JP H0690034B2 JP 2130452 A JP2130452 A JP 2130452A JP 13045290 A JP13045290 A JP 13045290A JP H0690034 B2 JPH0690034 B2 JP H0690034B2
- Authority
- JP
- Japan
- Prior art keywords
- lead
- plumb bob
- thread
- case
- cap
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Adornments (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、施工部の垂直度を確認するために用いられる
下げ振りの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a method for manufacturing a plumb bob used for confirming the verticality of a construction part.
下げ振りは、使用時、糸巻などの保持器に糸を介して懸
吊されて一種の重鎮として作用するものであって、ケー
スの内部に砂を入れる等して所定の重量をもつように成
形されている。The plumb bob is a kind of heavy weight that is suspended from a cage such as a bobbin through a thread when used, and is molded to have a predetermined weight by inserting sand into the case. Has been done.
〔発明が解決しようとする課題〕 重鎮として作用する下げ振りには所定の重量を備えるこ
とが要求されるが、下げ振りの大きさ自体は取り扱い易
さを慮ってできる限り小型であることが望ましい。[Problems to be Solved by the Invention] The plumb bob acting as a heavyweight is required to have a predetermined weight, but the size of the plumb bob itself is preferably as small as possible in consideration of handling. .
本発明は以上の点に鑑み、下げ振りを小型化するととも
に下げ振りを容易に製造し得るように工夫したものであ
って、この目的を達成するため、合成樹脂製のケースに
筒状の注入口を設け、前記注入口から熔解鉛を注入し、
前記鉛を冷却し、前記注入口をその内部の鉛ごと切断除
去する下げ振りの製造方法を提供する。In view of the above points, the present invention has been devised so that the plumb bob can be miniaturized and the plumb bob can be easily manufactured, and in order to achieve this object, a cylindrical case is provided in a synthetic resin case. An inlet is provided, and molten lead is injected from the inlet,
A method of manufacturing a plumb bob which cools the lead and cuts and removes the lead together with the lead therein.
鉛は他の金属や砂などに比べて比重が大きく、少量で大
きな重量を設定する上で極めて好適である。この鉛を熔
解してケースに注入し、冷却後、ケースの注入口をその
内部の鉛ごと切除し、鉛の充填量を均一化する。Lead has a larger specific gravity than other metals and sand, and is extremely suitable for setting a large weight with a small amount. This lead is melted and poured into the case, and after cooling, the injection port of the case is cut off together with the lead inside thereof to make the lead filling amount uniform.
つぎに本発明の実施例を図面にしたがって説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.
第１図ないし第３図に示すように、当該下げ振りは、符
号（２）（３）（４）（５）で示す４つの合成樹脂製の
部材よりなるケース（１）と鉄パイプ（６）よりなる被
吸着部と、鉛（７）よりなる質量部と、ステンレス針
（８）よりなる尖端部と、ステンレス針（８）に着脱自
在に被せられる合成樹脂製のキャップ（９）と、を有し
ている。As shown in FIGS. 1 to 3, the plumb bob has a case (1) made of four synthetic resin members indicated by reference numerals (2), (3), (4) and (5) and an iron pipe (6). ), A mass part made of lead (7), a tip made of a stainless needle (8), and a synthetic resin cap (9) detachably attached to the stainless needle (8), have.
円筒状に成形しかつ一部を円錐状に成形した下ケース
（２）の底部に貫通孔（21）を形成して針（８）を貫着
し、下ケース（２）の円筒部の外側に鉄パイプ（６）を
挿着し、鉄パイプ（６）の内側に上方から円筒状の上ケ
ース（３）を挿着して上下のケース（２）（３）を互い
に嵌着する。鉄パイプ（６）は上下のケース（２）
（３）のそれぞれに形成した鍔（22）（31）の間に挟ま
れて軸方向に抜き止めされる。上ケース（３）の上端に
円筒形の注入口（32）を形成しておき、この注入口（3
2）から上下のケース（２）（３）内に熔解鉛を注入
し、その冷却を待って上下のケース（２）（３）に固定
の鉛（７）を内挿する。冷却は水冷または空冷による。Outside of the cylindrical part of the lower case (2) by forming a through hole (21) at the bottom of the lower case (2), which is cylindrically shaped and partly conical, to penetrate the needle (8). The iron pipe (6) is inserted into the iron pipe (6), the cylindrical upper case (3) is inserted into the iron pipe (6) from above, and the upper and lower cases (2) and (3) are fitted together. The iron pipe (6) is the upper and lower case (2)
It is sandwiched between the collars (22) and (31) formed on each of (3) and is prevented from being pulled out in the axial direction. A cylindrical inlet (32) is formed at the upper end of the upper case (3), and the inlet (3
Molten lead is injected into the upper and lower cases (2) and (3) from 2), and after the cooling, the fixed lead (7) is inserted into the upper and lower cases (2) and (3). Cooling is by water cooling or air cooling.
鉛（７）を注入するに際しては、上ケース（３）の注入
口（32）を第４図に示すように予め長く成形しておき、
注入後、第５図に示すように注入口（32）の先端部（3
3）を鉛ごと切除するようにし、これにより鉛（７）の
注入量が製品ごとに多少増減しても充填量を均一にして
各製品に所定の質量を設定することができる。When injecting lead (7), the injection port (32) of the upper case (3) is preliminarily formed long as shown in FIG.
After injection, as shown in Fig. 5, the tip (3
By cutting off 3) together with lead, even if the injection amount of lead (7) slightly changes for each product, the filling amount can be made uniform and a predetermined mass can be set for each product.
切除後、注入口（32）に内蓋（４）を被せ、更に注入口
（32）の外側に外蓋（５）を嵌着する。中空円錐形に成
形した外蓋（５）の天面に糸係合孔（51）を形成し、周
壁の180度対称位置に１対の切欠（52）を形成してお
く。各切欠（52）は上ケース（３）の注入口（32）の外
側に形成した突段部（34）と係合し、突段部（34）の上
側に内蓋（４）の側部（41）が位置し、切欠（52）は残
りの上部約３分の１において窓（53）を形成する。After the excision, the inlet (32) is covered with the inner lid (4), and the outer lid (5) is fitted on the outside of the inlet (32). A thread engagement hole (51) is formed on the top surface of the outer cone (5) formed in a hollow cone shape, and a pair of notches (52) are formed at 180-degree symmetrical positions on the peripheral wall. Each notch (52) engages with a step (34) formed on the outside of the inlet (32) of the upper case (3), and the side of the inner lid (4) is above the step (34). (41) is located and the notch (52) forms the window (53) in the remaining upper third approximately one third.
糸（101）の先端を糸係合孔（51）に上方から差し通し
て一方の窓（53）から横手に引き出し、糸（101）の先
端に結び目（102）をつくり、この結び目（102）が糸係
合孔（51）の内側に引っ掛かるまで糸（101）を引き戻
す。窓（53）は糸（101）の交換時など必要に応じて何
時でも糸（101）を引き出して結び目（102）を解いたり
新たに結び目（102）をつくったりするために設けてあ
り、また内蓋（４）は窓（53）から鉛（７）の切り口が
見えないようにして当該製品の美感を高める役割を果た
す。Insert the tip of the thread (101) into the thread engaging hole (51) from above and pull out sideways from one window (53) to make a knot (102) at the tip of the thread (101). The thread (101) is pulled back until is caught inside the thread engaging hole (51). The window (53) is provided to pull out the thread (101) and untie the knot (102) or create a new knot (102) at any time such as when the thread (101) is replaced. The inner lid (4) plays a role of enhancing the aesthetics of the product by making the cut end of the lead (7) invisible through the window (53).
有底円筒形に成形したキャップ（９）は当該下げ振りの
非使用時にこれを針（８）に被せ、針（８）によって人
身または物損事故が生じることがないように安全性を高
める役割を果たす。キャップ（９）の下部は手指で掴み
易いように球状に大きく成形し、底部に糸（101）を遊
挿し得る程度の透孔（91）を設け、上端の開口部縁辺か
ら透孔（91）にかけて糸（101）を透孔（91）に通すた
めのスリット（92）を形成しておく。キャップ（９）は
当該下げ振りの使用に先立って針（８）から外される
が、小さな部品であるため紛失する虞れがある。このた
め、第６図に示すようにキャップ（９）を天地逆にし糸
（101）に対して同軸的に外挿して該キャップ（９）の
紛失を防止する。スリット（92）は糸（101）を引っ張
らなければ通せないほど狭いものとする。同図に示すよ
うに、糸（101）に予めビニルまたは軟質ゴムなどの筒
体（103）を嵌めておき、糸（101）に外挿したキャップ
（９）を下方にスライドさせてキャップ（９）の内側に
筒体（103）を入れると筒体（103）がスリット（92）よ
り圧倒的に太い（広い）ためキャップ（９）の抜け止め
効果を高めることができる。また外蓋（５）の上面にキ
ャップ（９）の開口部と係合する環状の突起（54）を設
けても良い。The bottomed cylindrical cap (9) covers the needle (8) when the plumb bob is not used, and enhances safety so that the needle (8) does not cause personal injury or property damage. Fulfill. The lower part of the cap (9) is formed into a large spherical shape so that it can be easily grasped with fingers, and a through hole (91) is provided in the bottom to allow the thread (101) to be loosely inserted. A slit (92) for passing the thread (101) through the through hole (91) is formed in the upper part. The cap (9) is removed from the needle (8) prior to using the plumb bob, but it may be lost because it is a small part. Therefore, as shown in FIG. 6, the cap (9) is turned upside down so as to be coaxially externally attached to the thread (101) to prevent the cap (9) from being lost. The slit (92) is so narrow that it cannot be passed through without pulling the thread (101). As shown in the figure, a tubular body (103) such as vinyl or soft rubber is fitted into the thread (101) in advance, and the cap (9) externally fitted to the thread (101) is slid downward to move the cap (9). When the tubular body (103) is inserted inside (), the tubular body (103) is overwhelmingly thicker (wider) than the slit (92), so that the retaining effect of the cap (9) can be enhanced. Further, an annular protrusion (54) which engages with the opening of the cap (9) may be provided on the upper surface of the outer lid (5).
第７図は当該下げ振りの使用状態を示し、当該下げ振り
は保持器（104）に糸（101）を介して懸吊されている。
この状態で既知のＡ寸法に対してＢの間隔を計って比較
することにより施工部壁部（105）の垂直度を確認す
る。下げ振りの重量は一例として約280gである。保持器
（104）には前述したように該保持器（104）を磁性体製
の壁部（105）に吸着するための永久磁石（106）が備え
られており、第８図に示すように、この永久磁石（10
6）に鉄パイプ（６）を吸着させて当該下げ振りと保持
器（104）とを一体に取り扱えるようにする。FIG. 7 shows a usage state of the plumb bob, and the plumb bob is suspended by a retainer (104) via a thread (101).
In this state, the perpendicularity of the construction wall portion (105) is confirmed by measuring and comparing the interval B with the known dimension A. The weight of the plumb bob is about 280 g as an example. As described above, the retainer (104) is provided with the permanent magnet (106) for attracting the retainer (104) to the wall portion (105) made of a magnetic material, and as shown in FIG. , This permanent magnet (10
The iron pipe (6) is adsorbed to 6) so that the plumb bob and the retainer (104) can be handled integrally.
本発明の下げ振りの製造方法によれば、ケースの注入口
を鉛ごと切断除去するようにしたため当該下げ振りの重
量を均一にすることができる。したがって本発明の製造
方法は下げ振りを大量生産するのに好適である。According to the plumb bob manufacturing method of the present invention, the weight of the plumb bob can be made uniform because the injection port of the case is cut and removed together with lead. Therefore, the manufacturing method of the present invention is suitable for mass producing plumb bobs.
第１図は本発明の実施例に係る下げ振りの縦断面図、第
２図は正面図、第３図は分解斜視図、第４図及び第５図
はそれぞれ鉛の注入工程を示す部分断面図、第６図はキ
ャップの取付手順を示す部分正面図、第７図は下げ振り
と保持器の使用状態を示す正面図、第８図は下げ振りと
保持器の収容状態を示す正面図である。 （１）……ケース、（２）……下ケース、（21）……貫
通孔、 （22）（31）……鍔、（３）……上ケース、（32）……
注入口、 （33）……先端部、（34）……突段部、（４）……内
蓋、 （41）……側部、（５）……外壁、（51）……糸係合
孔、 （52）……切欠、（53）……窓、（54）……突起、 （６）……鉄パイプ、（７）……鉛、（８）……ステン
レス針、 （９）……キャップ、（91）……透孔、（92）……スリ
ット、 （101）……糸、（102）……結び目、（103）……筒
体、 （104）……保持器、（105）……壁部、（106）……永
久磁石FIG. 1 is a vertical cross-sectional view of a plumb bob according to an embodiment of the present invention, FIG. 2 is a front view, FIG. 3 is an exploded perspective view, and FIGS. 4 and 5 are partial cross-sections showing a lead injection process, respectively. Fig. 6 is a partial front view showing the procedure for attaching the cap, Fig. 7 is a front view showing the plumb bob and the usage state of the cage, and Fig. 8 is a front view showing the plumb bob and the housing state of the cage. is there. (1) …… Case, (2) …… Lower case, (21) …… Through hole, (22) (31) …… Bill, (3) …… Upper case, (32) ……
Inlet, (33) ... Tip, (34) ... Projection, (4) ... Inner lid, (41) ... Side, (5) ... Outer wall, (51) ... Threader Aperture, (52) …… notch, (53) …… window, (54) …… protrusion, (6) …… iron pipe, (7) …… lead, (8) …… stainless needle, (9) ...... Cap, (91) …… Through hole, (92) …… Slit, (101) …… Thread, (102) …… Knot, (103) …… Cylindrical body, (104) …… Retainer, ( 105) …… Wall, (106) …… Permanent magnet
Claims (1)
け、前記注入口から熔解鉛を注入し、前記鉛を冷却し、
前記注入口をその内部の鉛ごと切断除去することを特徴
とする下げ振りの製造方法。1. A case made of synthetic resin is provided with a cylindrical injection port, molten lead is injected from the injection port, and the lead is cooled,
A method of manufacturing a plumb bob, characterized in that the injection port is cut and removed together with lead therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2130452A JPH0690034B2 (en) | 1990-05-21 | 1990-05-21 | Pendant manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2130452A JPH0690034B2 (en) | 1990-05-21 | 1990-05-21 | Pendant manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0425713A JPH0425713A (en) | 1992-01-29 |
| JPH0690034B2 true JPH0690034B2 (en) | 1994-11-14 |
Family
ID=15034574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2130452A Expired - Lifetime JPH0690034B2 (en) | 1990-05-21 | 1990-05-21 | Pendant manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0690034B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0871729A (en) * | 1994-08-31 | 1996-03-19 | Tajima Tool:Kk | Weight manufacturing method |
| US5720112A (en) * | 1995-09-20 | 1998-02-24 | Dwbh Ventures Ltd. | Asymmetrical plumb bob and method |
| US6898861B2 (en) | 2001-05-02 | 2005-05-31 | Christopher Shawn Bartimus | String line tool and sheaths therefor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5964672U (en) * | 1982-10-25 | 1984-04-28 | 三崎漁具株式会社 | "Maki" bait for fishing |
| JP2572960B2 (en) * | 1985-07-08 | 1997-01-16 | 沖電気工業株式会社 | Microwave radio beacon |
-
1990
- 1990-05-21 JP JP2130452A patent/JPH0690034B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0425713A (en) | 1992-01-29 |
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