JP4848167B2

JP4848167B2 - Tape measure

Info

Publication number: JP4848167B2
Application number: JP2005298320A
Authority: JP
Inventors: 喜康真栄田
Original assignee: Muratec KDS Corp
Current assignee: Muratec KDS Corp
Priority date: 2005-10-13
Filing date: 2005-10-13
Publication date: 2011-12-28
Anticipated expiration: 2025-10-13
Also published as: JP2007107977A

Description

本発明は、本体ケース内に測定テープを巻取り或いは繰出し可能に収納し且つ測定テープを繰出位置にロック保持し得るロック装置を備えた巻尺に関する。 The present invention relates to a tape measure provided with a lock device capable of storing a measuring tape in a main body case so that the measuring tape can be wound or fed and locking the measuring tape in a feeding position.

従来、鋼板、織布、プラスチック材等からなる長尺の測定テープを本体ケース内に巻取り収納し、使用時にはその繰出し口から所望長さに繰出せるようにした巻尺が、建築現場等の産業分野や一般家庭等において広く用いられている。上記巻取りは、手巻き式の他に、ゼンマイバネの戻り力を利用した自動巻取り方式が多く採用されている。また、鋼板製の測定テープとしては、幅方向に湾曲し（コンベックス）、繰出された時にはその湾曲形状への形状記憶性により直線状を維持し得るようにしたものが採用されている。上記のような自動巻取り方式の巻尺の使用に際しては、ゼンマイバネの戻り力（巻取付勢力）に抗して測定テープが所望長さに繰出される。この時、測定テープには常時巻取付勢力が作用しているから、測定テープを繰出した後、手放すと自動的に巻取られてしまう。従って、この種の自動巻取り方式の巻尺では、何等かのロック手段が付設され、測定テープを所望の繰出し位置でロック維持するようになされている。 Conventionally, a tape measure that has been used to wind up and store a long measuring tape made of steel plate, woven fabric, plastic material, etc. in the main body case and to feed it to the desired length from its feed opening when in use is used in industries such as construction sites. Widely used in fields and general households. In addition to the manual winding method, many automatic winding methods using the return force of the spring spring are employed for the winding. Further, as the measuring tape made of a steel plate, a measuring tape that is curved in the width direction (convex) and that can be kept linear by its shape memory property when being fed is adopted. When using the automatic winding type tape measure as described above, the measuring tape is fed out to a desired length against the return force (winding mounting force) of the mainspring. At this time, since the winding attachment force is always applied to the measurement tape, the measurement tape is automatically wound up when it is released after being taken out. Therefore, in this type of automatic winding type tape measure, some locking means is attached to keep the measuring tape locked at a desired feeding position.

従来、上記ロック手段としては、操作ボタンをスライド操作し、該操作ボタンに連動するロック部材によって測定テープを拘束しロックするような機構が採用されていた。しかし、このような機構の場合、測定テープを繰出した上で、操作ボタンのロック操作も必要とされる為、操作上の煩雑感があることは否めなかった。そこで、測定テープを繰出して手放すだけで自動的にロックされ、ロック解除用操作ボタンを操作すると自動的に測定テープが巻取られるようにした機構も開発され、実用化されるようになった。特許文献１には、このような自動ロック装置を備えた巻尺の例が開示されている。
国際公開第０３／０６４９６４号パンフレット Conventionally, as the locking means, a mechanism has been employed in which an operation button is slid and the measurement tape is restrained and locked by a lock member interlocked with the operation button. However, in the case of such a mechanism, since it is necessary to lock the operation button after feeding out the measuring tape, it cannot be denied that there is a sense of complexity in operation. In view of this, a mechanism has been developed and put into practical use in which a measuring tape is automatically locked just by being unwound and released, and is automatically wound when the unlocking operation button is operated. Patent Document 1 discloses an example of a tape measure provided with such an automatic locking device.
International Publication No. 03/064964 Pamphlet

上記特許文献１に開示された自動ロック装置は、ヒンジピンによって前後に揺動可能に支持されたロックレバーの揺動端に、シリンダーが該ロックレバーの直交方向に摺動可能に連結され、更に、シリンダーの先端には楔形状のストッパが固着され、該ストッパとロックレバーとの間にコイルスプリングが弾装されてなる。上記ストッパは、繰出部に位置する測定テープの直線部分と、巻取ボビンに巻取られた測定テープの巻回最外周部とに接するように、上記コイルスプリングによって常時付勢されている。そして、測定テープを繰出す際には、測定テープがストッパの表面に摺接し、その繰出が許容される。そして、所望の繰出し位置で測定テープを手放すと、巻取付勢力により測定テープが巻き戻されようとするが、上記楔形状のストッパが、上記コイルスプリングの付勢力によって、測定テープの上記直線部と巻回最外周部とにより形成される略三角形状部に食い込むように変位し、その楔的作用によって測定テープが拘束され、その巻き戻しが阻止（ロック）される。このロック解除は、ロックレバーの反揺動端側（ロック解除ボタン）を押圧操作し、その反作用を利用して、ストッパの上記略三角形状部への食い込みを緩めることによってなされる。 In the automatic locking device disclosed in Patent Document 1, a cylinder is slidably coupled to a rocking end of a lock lever supported by a hinge pin so as to be rockable back and forth, and is slidable in an orthogonal direction of the lock lever. A wedge-shaped stopper is fixed to the tip of the cylinder, and a coil spring is mounted between the stopper and the lock lever. The stopper is always urged by the coil spring so as to come into contact with the linear portion of the measuring tape positioned at the feeding portion and the winding outermost peripheral portion of the measuring tape wound around the winding bobbin. When the measurement tape is fed out, the measurement tape comes into sliding contact with the surface of the stopper, and the feeding is allowed. Then, when the measuring tape is released at a desired feeding position, the measuring tape tends to be rewound by the winding attachment urging force, but the wedge-shaped stopper is separated from the linear portion of the measuring tape by the urging force of the coil spring. The measurement tape is displaced so as to bite into a substantially triangular portion formed by the outermost periphery of the winding, and the measuring tape is restrained by its wedge action, and its unwinding is prevented (locked). This unlocking is performed by pressing the anti-oscillation end side (lock release button) of the lock lever and using the reaction to loosen the stopper into the substantially triangular portion.

上記ストッパの略三角形状部への食い込みは、コイルスプリングの付勢力に、測定テープの上記直線部及び巻回最外周部に作用する巻取付勢力が相乗されるから、食い込み力が強く安定したロック維持がなされる。しかし、逆に食い込み力が強い為に、上記のようなロック解除操作をしてもストッパの上記略三角形状部への食い込み緩和が円滑になされないことがある上にロック解除の為の強い手指操作を必要とする。更に、ロックレバー、ロック解除ボタン、シリンダー、コイルスプリング及びストッパ等の多数の部品を準備し組立てる必要がある為、部品点数が多くなり、コスト高の原因となることも予想されるところであった。また、ロック解除ボタンは本体ケースの外に露出するから、外観をシンプル化する上で障害ともなっていた。 The stopper bites into the substantially triangular portion because the coil spring biasing force synergizes with the winding attachment biasing force acting on the linear portion and the winding outermost periphery of the measuring tape. Maintenance is done. However, since the bite force is strong, even if the unlocking operation as described above is performed, the biting of the stopper into the substantially triangular portion may not be smoothly relaxed, and the strong fingers for unlocking Requires operation. Furthermore, since it is necessary to prepare and assemble a large number of parts such as a lock lever, a lock release button, a cylinder, a coil spring, and a stopper, the number of parts is increased, which is expected to cause high costs. Moreover, since the unlock button is exposed outside the main body case, it has become an obstacle to simplify the appearance.

本発明は、上記実情に鑑みなされたものであり、簡単な構成で、繰出された測定テープを安定的に自動ロックし、且つロック解除も簡易になし得ると共に、シンプルな外観構造の巻尺を提供することを目的としている。 The present invention has been made in view of the above circumstances, and provides a tape measure with a simple external structure, with a simple structure, capable of automatically and stably locking a fed measuring tape and easily releasing the lock. The purpose is to do.

請求項１の発明に係る巻尺は、本体ケースと、該本体ケース内に巻取及び繰出自在に収納された測定テープと、該測定テープを巻取り付勢する付勢手段と、該付勢手段の付勢力に抗して繰出された測定テープを繰出位置にロック保持するロック装置とを備えた巻尺であって、上記ロック装置は、繰出部の測定テープに常時接する作用部を備えた弾性部材からなり、測定テープを繰出す際には、測定テープの繰出しに伴う作用部の追動により弾性部材が弾性変形して作用部が待機位置からテープ繰出口部側に変位し、繰出力が付加されなくなった時には、弾性部材の復元弾力によって作用部と本体ケースの内壁との間に測定テープを緊合ロックし、繰出された測定テープに巻取り方向の外力が付加された時には、弾性部材が復元して上記ロック状態が解除され、作用部が待機位置に復帰すると共に、測定テープは作用部に摺接しながら上記付勢手段の付勢力によって巻取られるようにしたことを特徴とする。 The tape measure according to the invention of claim 1 includes a main body case, a measuring tape housed in the main body case so as to be freely wound and unwound, a biasing means for winding and biasing the measuring tape, and the biasing means. A tape measure provided with a lock device that locks and holds the measurement tape fed out against the urging force at a feed position, and the lock device includes an action portion that is always in contact with the measurement tape of the feed portion. When the measuring tape is fed out, the elastic member is elastically deformed by the follow-up of the working part accompanying the feeding out of the measuring tape, and the working part is displaced from the standby position to the tape feed-out part side, and a feeding output is added. When the measuring tape is no longer used, the measuring tape is tightly locked between the action portion and the inner wall of the main body case by the elastic force of the elastic member, and when an external force in the winding direction is applied to the fed measuring tape, the elastic member Restore and lock above State is released, the working portion is returned to the standby position, the measuring tape is characterized in that so as to be taken up by the biasing force of the biasing means while sliding the working unit.

本発明においては、請求項２の発明のように、前記弾性部材が板バネからなり、該板バネの基端部は前記本体ケースの内壁に固着され且つその先端部に前記作用部が形成され、該板バネは、待機状態ではその先端作用部が測定テープの巻取り方向に向くＣ字形状とされ、測定テープの繰出時には前記弾性変形によってＳ字形状に変形し、このＳ字形状から上記Ｃ字形状へ復元しようとする弾力によって、作用部と本体ケースの内壁との間に測定テープを緊合ロックするものとすることができる。この場合、請求項３の発明のように、前記本体ケースには、前記板バネのＳ字形状への変形を助長する為の規制部が設けられていることが望ましい。更に、請求項４の発明のように、前記作用部は、前記板バネの先端に固着された摩擦部材からなるものが望ましい。 In the present invention, as in the second aspect of the present invention, the elastic member is formed of a leaf spring, the base end portion of the leaf spring is fixed to the inner wall of the main body case, and the action portion is formed at the distal end portion thereof. In the standby state, the leaf spring has a C-shape with its tip acting portion facing the winding direction of the measuring tape, and is deformed into an S-shape by the elastic deformation when the measuring tape is unwound. The measuring tape can be tightly locked between the action portion and the inner wall of the main body case by the elastic force to restore the C shape. In this case, as in the invention of claim 3, it is desirable that the main body case is provided with a restricting portion for facilitating deformation of the leaf spring into an S shape. Further, as in the invention of claim 4, it is desirable that the action portion is composed of a friction member fixed to the tip of the leaf spring.

また、本発明においては、請求項５の発明のように、前記弾性部材が板バネからなり、該板バネはその基端部をして前記本体ケースの内壁に揺動可能に枢支され、且つその先端部に前記作用部が形成され、該板バネは、待機状態ではその先端作用部が測定テープの巻取り方向に向くよう位置し、測定テープの繰出時には反転して測定テープの繰出側に弾性変形し、この弾性変形状態から上記待機位置側へ復元しようとする弾力によって、作用部と本体ケースの内壁との間に測定テープを緊合ロックするものとすることができる。 Further, in the present invention, as in the invention of claim 5, the elastic member comprises a leaf spring, and the leaf spring is pivotally supported on the inner wall of the main body case with its base end portion, In addition, the action portion is formed at the tip portion, and the leaf spring is positioned so that the tip action portion faces in the winding direction of the measuring tape in the standby state, and is reversed when the measuring tape is drawn out, and the measuring tape is fed out. The measuring tape can be tightly locked between the action portion and the inner wall of the main body case by the elastic force that is elastically deformed and is restored from the elastically deformed state to the standby position side.

更には、請求項６の発明のように、前記弾性部材が前記本体ケースの内壁に枢支された揺動アームの先側に固着された弾性体からなり、且つ該弾性体の測定テープと弾接する部分が作用部とされ、上記揺動アームは、待機状態では弾性体が測定テープの巻取り方向に向くよう位置し、測定テープの繰出時には弾性体の弾性変形を伴い反転して測定テープの繰出側に揺動し、この弾性体の弾性変形状態から上記待機位置側へ復元しようとする弾力によって、作用部と本体ケースの内壁との間に測定テープを緊合ロックするものとすることもできる。そして、上記いずれかの発明において、前記測定テープは、請求項７の発明のように、鋼板製コンベックステープからなるものが採用される。 Further, as in a sixth aspect of the invention, the elastic member is made of an elastic body fixed to the front side of a swinging arm pivotally supported on the inner wall of the main body case, and the measuring tape and the elastic body of the elastic body. The contact portion is an action portion, and the swing arm is positioned so that the elastic body faces in the winding direction of the measuring tape in the standby state, and is reversed with elastic deformation of the elastic body when the measuring tape is fed out. The measuring tape may be tightly locked between the action portion and the inner wall of the main body case by an elastic force that swings toward the feeding side and tries to restore the elastic body from the elastically deformed state to the standby position side. it can. In any one of the above inventions, the measuring tape is made of a steel sheet convex tape as in the seventh aspect of the invention.

請求項１の発明に係る巻尺においては、ロック装置が、常時繰出位置の測定テープに接する作用部を備えた弾性部材からなり、測定テープの繰出し及びロックは、弾性部材の弾性変形と作用部の変位によってなされ、ロック解除は、繰出された測定テープに巻取り方向の外力を付加するだけでされる。従ってロック機構の構造が極めて簡単で部品点数が少なく、低コストで提供することができる。また、ロック・アンロックボタンがなく、外観をシンプルに構成することができると共に煩わしいロック・アンロック操作を不要とし、ハンドリング性が極めて優れたものとなる。 In the tape measure according to the first aspect of the present invention, the locking device is composed of an elastic member having an action portion that is in contact with the measurement tape at the normally extended position, and the feeding and locking of the measurement tape is performed by the elastic deformation of the elastic member and the action portion. It is made by the displacement, and the lock is released only by applying an external force in the winding direction to the fed measuring tape. Therefore, the structure of the lock mechanism is extremely simple, the number of parts is small, and it can be provided at a low cost. Further, there is no lock / unlock button, the appearance can be simply configured, and a troublesome lock / unlock operation is not required, and the handling property is extremely excellent.

また、ロック装置を構成する弾性部材を、請求項２の発明のような板バネからなるものとすれば、そのＣ字形状時及びＳ字形状時に発現される弾性特性（弾力の方向或いは大きさ等）の相違によって、上記測定テープの緊合ロックが安定的になされ、また、測定テープの繰出し或いは巻取りが円滑になされる。この場合に、請求項３の発明のように、本体ケースに、前記板バネのＳ字形状への変形を助長する為の規制部を設ければ、この規制部によって測定テープのロック時における板バネのＳ字形状の維持が的確になされる。そして、請求項４の発明のように、前記作用部を、前記板バネの先端に固着された摩擦部材からなるものとすれば、測定テープの繰出し時における作用部の追動及びロック解除時に外力を付加する際の板バネの復元作用の惹起が確実になされる。 Further, if the elastic member constituting the locking device is made of a leaf spring as in the invention of claim 2, the elastic characteristics (the direction or magnitude of elasticity) that are manifested in the C-shape and S-shape. Etc.), the measuring tape can be locked tightly, and the measuring tape can be fed or wound smoothly. In this case, as in the invention of claim 3, if the main body case is provided with a restricting portion for facilitating the deformation of the leaf spring into the S shape, the plate at the time of locking the measuring tape by the restricting portion. The S-shape of the spring is accurately maintained. As in the invention of claim 4, if the action part is made of a friction member fixed to the tip of the leaf spring, an external force is applied when the action part is driven and unlocked when the measuring tape is fed. The restoring action of the leaf spring when adding is surely caused.

更に、ロック装置を構成する弾性部材を、請求項５の発明のように、基端部をして前記本体ケースの内壁に揺動可能に枢支された板バネからなるものとすれば、測定テープの繰出しに伴う作用部の追動によって板バネが繰出側に弾性変形を伴い反転し、その復元力によって測定テープが繰出位置に自動的に緊合ロックされる。そして、巻取り方向の外力が付加された時には、この板バネが元の待機位置に復帰し、ロック解除が簡易になされる。 Further, if the elastic member constituting the locking device is made of a leaf spring pivotably supported on the inner wall of the main body case with the base end portion as in the invention of claim 5, the measurement is performed. The leaf spring is reversed with elastic deformation on the feeding side by the follow-up of the action part accompanying the feeding of the tape, and the measuring tape is automatically locked to the feeding position by the restoring force. When an external force in the winding direction is applied, the leaf spring returns to the original standby position, and unlocking is easily performed.

更にまた、ロック装置を構成する弾性部材を、請求項６の発明のように、前記本体ケースの内壁に枢支された揺動アームの先側に固着された弾性体からなるものとし、この弾性体の測定テープと弾接する部分が作用部とすれば、測定テープの繰出しに伴う作用部の追動によって揺動アームが弾性体の弾性変形を伴い繰出側に揺動し、弾性体の復元力によって測定テープが繰出位置に自動的に緊合ロックされる。そして、巻取り方向の外力が付加された時には、この揺動アームが元の待機位置に復帰し、ロック解除が簡易になされる。 Furthermore, the elastic member constituting the locking device is made of an elastic body fixed to the front side of the swinging arm pivotally supported on the inner wall of the main body case, as in the invention of claim 6. If the part of the body that is in elastic contact with the measuring tape is the action part, the swinging arm swings to the feeding side with the elastic deformation of the elastic body due to the follow-up of the working part accompanying the feeding of the measuring tape, and the restoring force of the elastic body Thus, the measuring tape is automatically locked in the feeding position. When an external force in the winding direction is applied, the swing arm returns to the original standby position, and unlocking is easily performed.

ロック装置を請求項５或いは６の発明のように構成すれば、構造が極めて簡易でありながら、測定テープのロック・アンロックが的確になされ、請求項２の発明と共に望ましく採用される。そして、上記いずれかの発明において、請求項７の発明のように、測定テープを鋼板製コンベックステープからなるものとすれば、本発明を汎用のコンベックス巻尺への適用が簡易になされると共に、コンベックステープ特有の特性が活かされて、繰出し・ロック時における測定テープの直線性の維持がなされ、また、繰出した時の拡開弾発特性と上記弾性部材の復元弾性とが相乗して上記緊合ロックがより安定的になされる。 If the locking device is configured as in the invention of claim 5 or 6, the structure is extremely simple, and the measuring tape can be properly locked and unlocked, which is preferably employed together with the invention of claim 2. In any one of the above inventions, if the measurement tape is made of a steel sheet convex tape as in the invention of claim 7, the present invention can be easily applied to a general-purpose convex tape measure, and Utilizing the unique properties of the tape, the linearity of the measuring tape is maintained during feeding and locking, and the expansion and resilience characteristics when fed out and the restoring elasticity of the elastic member are synergistically coupled. Lock is made more stable.

以下に本発明の最良の実施の形態について、図面に基づいて説明する。図１は本発明の巻尺の第１の実施形態を示す部分切欠横断平面図、図２は同巻尺における測定テープの繰出状態を示す同様図、図３は同繰出位置で測定テープを自動ロックした状態を示す同様図、図４は測定テープの繰出し位置と必要引出し力及び引戻し力との関係を表すグラフ、図５は他の実施形態の図１と同様図である。図６は更に他の実施形態の図１と同様図であり、図７は同実施形態における測定テープの繰出位置で測定テープを自動ロックした状態を示す同様図である。図８は更に他の実施形態の図１と同様図であり、図９は同実施形態における測定テープの繰出位置で測定テープを自動ロックした状態を示す同様図、図１０は更に他の実施形態の図１と同様図である。 The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway plan view showing a first embodiment of the tape measure of the present invention, FIG. 2 is a similar view showing a measuring tape being fed out of the tape measure, and FIG. 3 is an automatic lock of the measuring tape at the same feeding position. FIG. 4 is a graph showing the relationship between the feeding position of the measuring tape and the required drawing force and pulling force, and FIG. 5 is a drawing similar to FIG. 1 of another embodiment. FIG. 6 is a view similar to FIG. 1 of another embodiment, and FIG. 7 is a view showing a state in which the measuring tape is automatically locked at the measuring tape feeding position in the embodiment. FIG. 8 is a view similar to FIG. 1 of another embodiment, FIG. 9 is a similar view showing a state in which the measurement tape is automatically locked at the feeding position of the measurement tape in the embodiment, and FIG. 10 is still another embodiment. It is a figure similar to FIG.

図１に示す巻尺Ａは、硬質合成樹脂等により成型された２つ割りの本体ケース１内に、目盛が付された長尺の測定テープ２を巻取軸３周りに巻取り及び繰出し自在に収納してなる。１ｈは、当該２つ割りの本体ケース１を相互に締結一体化させる為のビス孔である。測定テープ２は幅方向に湾曲した鋼板製のコンベックステープからなり、その基部側には、巻取軸３に基端部が固設されたゼンマイバネ（巻取付勢手段）４が連結され（図１では、測定テープ２とゼンマイバネ４との連結部分は省略されている。）、常時は巻取軸３の周りに弾性的に巻取付勢され、巻取ドラム（テープ巻取リール）５の周囲に巻装されている。５ａは、該巻取ドラム５を保持し、ゼンマイバネ４及び測定テープ２を整然と巻取るリールガイド板である。測定テープ２は、コンベックステープの湾曲形状への形状記憶特性により、繰出された時には直線状を維持し得ることは、従来公知のものと同様である。また、コンベックステープ以外の織布、プラスチック材等からなる長尺のテープも採用することができる。 A tape measure A shown in FIG. 1 allows a long measuring tape 2 with a scale to be wound around a take-up shaft 3 in a split main body case 1 formed of a hard synthetic resin or the like so as to be freely wound and fed out. It is stored. 1h is a screw hole for fastening and integrating the split main body case 1 with each other. The measuring tape 2 is composed of a convex tape made of a steel sheet curved in the width direction, and a spring spring (winding attachment biasing means) 4 having a base end fixed to the winding shaft 3 is connected to the base side thereof (FIG. 1). However, the connecting portion between the measuring tape 2 and the spring 4 is omitted.) Normally, the measuring tape 2 is elastically wound around the take-up shaft 3 and is wound around the take-up drum (tape take-up reel) 5. It is wound. Reference numeral 5a denotes a reel guide plate that holds the winding drum 5 and winds the mainspring 4 and the measuring tape 2 in an orderly manner. The measuring tape 2 can maintain a straight line shape when it is fed out due to the shape memory characteristic of the convex tape to the curved shape, as is conventionally known. Further, a long tape made of a woven fabric other than a convex tape, a plastic material, or the like can also be used.

測定テープ２の先端部には測定基準金具を兼ねるフック部材２ａが取付けられ、測定テープ２の本体ケース１内での収納状態では、繰出口１ａにこのフック部材２ａが露出係止されている。測定テープ２を繰出口１ａから繰出す際は、測定テープ２は上記ゼンマイバネ４の付勢弾力に抗して引出されるが、そのまま手放すとこの付勢弾力によって巻き戻されてしまうので、図例の巻尺では所望の繰出し位置に測定テープ２を静止させる為のロック装置６が組み付けられている。該ロック装置６は、帯鋼板製の板バネ（弾性部材）７と、該板バネ７の先端に固着形成された合成樹脂或いは硬質ゴム等の摩擦部材からなる作用部８とより構成されている。 A hook member 2a that also serves as a measurement reference metal fitting is attached to the tip of the measurement tape 2. When the measurement tape 2 is stored in the main body case 1, the hook member 2a is exposed and locked to the feeding port 1a. When the measuring tape 2 is fed out from the feeding opening 1a, the measuring tape 2 is pulled out against the biasing elasticity of the mainspring 4. However, if it is released as it is, it will be rewound by this biasing elasticity. In this tape measure, a lock device 6 for assembling the measuring tape 2 at a desired feeding position is assembled. The locking device 6 includes a plate spring (elastic member) 7 made of a strip steel plate and an action portion 8 made of a friction member such as a synthetic resin or hard rubber fixedly formed at the tip of the plate spring 7. .

上記板バネ７は、その基端部７ａが前記本体ケース１の内壁に固着され、上記リールガイド板５ａの外周側に沿ってＣ字形状に湾曲され、先端の自由端としての作用部８が測定テープ２の巻回部分からフック部材２ａに至る直線部分２ｂの表面に弾接するよう本体ケース１内に弾装されている。ロック装置６は、図１のように、待機状態（測定テープ２が繰出されていない状態）では、板バネ７がＣ字形状に湾曲され、且つ作用部８が本体ケース１の繰出部１ｂにおける測定テープ２の直線部分２ｂの表面に弾接した状態に維持される。また、本体ケース１内の測定テープ繰出部１ｂには、後記するように、板バネ７のＳ字形状への変形を助長する為の規制部１ｃが一体形成されている。 The leaf spring 7 has a base end portion 7a fixed to the inner wall of the main body case 1, curved in a C shape along the outer peripheral side of the reel guide plate 5a, and an action portion 8 as a free end at the tip. It is elastically mounted in the main body case 1 so as to elastically contact the surface of the straight portion 2b extending from the winding portion of the measuring tape 2 to the hook member 2a. As shown in FIG. 1, the locking device 6 is in a standby state (a state where the measuring tape 2 is not fed), and the leaf spring 7 is curved in a C shape, and the action portion 8 is in the feeding portion 1 b of the main body case 1. The measurement tape 2 is maintained in a state of elastic contact with the surface of the linear portion 2b. Further, as will be described later, a regulating portion 1c for facilitating the deformation of the leaf spring 7 into the S shape is integrally formed with the measuring tape feeding portion 1b in the main body case 1.

図２は上記構成の巻尺Ａにおける測定テープ２の繰出状態を示す。同図の白抜矢示方向に測定テープ２を引出してゆくと、上記ロック装置６の先端作用部８と測定テープ２の表面との弾性摺接摩擦作用によって、２点鎖線位置から実線位置に示すように、作用部８が測定テープ２の引出しに追動して変位し、これに伴い板バネ７も弾性変形して、その途中部分が上記規制部１ｃに当接する。その後も測定テープ２の繰出を継続すると、図３に示すように、作用部８が繰出口１ａ側に追動変位し、これに伴い板バネ７は規制部１ｃの規制を受けてその先側部分が反転屈曲してＳ字形状に弾性変形する。図２のように、作用部８が測定テープに略直角に弾性当接している状態では、板バネ７に蓄積された弾性エネルギーは最も大（測定テープ２を押圧する力が最も大）であるが、この状態で横方向の力が付加されると、このエネルギーを放出するよう作用し、図３に示すようなＳ字形状への変形が容易になされる。 FIG. 2 shows a feeding state of the measuring tape 2 in the tape measure A having the above-described configuration. When the measuring tape 2 is pulled out in the direction indicated by the white arrow in the drawing, the elastic sliding contact frictional action between the distal end working portion 8 of the locking device 6 and the surface of the measuring tape 2 changes the position from the two-dot chain line position to the solid line position. As shown in the drawing, the action portion 8 is displaced by following the drawing of the measuring tape 2, and the leaf spring 7 is also elastically deformed along with this, and the middle portion thereof abuts on the restriction portion 1c. When the feeding of the measuring tape 2 is continued thereafter, as shown in FIG. 3, the action portion 8 is driven and displaced toward the feeding outlet 1a side, and accordingly, the leaf spring 7 is subjected to the regulation of the regulating portion 1c and the front side thereof. The part is inverted and bent and elastically deformed into an S shape. As shown in FIG. 2, in a state where the action portion 8 is in elastic contact with the measurement tape at a substantially right angle, the elastic energy accumulated in the leaf spring 7 is the largest (the force that presses the measurement tape 2 is the largest). However, when a lateral force is applied in this state, it acts to release this energy, so that it can be easily transformed into an S-shape as shown in FIG.

そして、所望長さに測定テープ２を繰出した後、測定テープ２を手放すと、測定テープ２は、ゼンマイバネ４の巻取付勢力により引戻されようとする。しかし、ロック装置６の作用部８には、Ｓ字形状に弾性変形した板バネ７の復元弾力によって、図３のＸ方向への付勢力が作用しているから、測定テープ２は作用部８と本体ケース１の内壁との間に緊合状態とされ、その引戻しが阻止されロックされる。この場合、作用部８が測定テープ２の引戻し方向に対向する方向に向いた状態で測定テープ２に弾接するから、作用部８の上記付勢力の分力による押接作用と測定テープ２に付加される巻取付勢力が拮抗し、上記緊合ロックが安定的になされる。 Then, after the measuring tape 2 is fed out to a desired length, when the measuring tape 2 is released, the measuring tape 2 tends to be pulled back by the winding attachment force of the mainspring spring 4. However, since the urging force in the X direction in FIG. 3 acts on the action portion 8 of the lock device 6 by the restoring elasticity of the leaf spring 7 elastically deformed into an S-shape, the measuring tape 2 has the action portion 8. And the inner wall of the main body case 1 are brought into a tight state, and their pullback is prevented and locked. In this case, since the action portion 8 is elastically contacted with the measurement tape 2 in a direction facing the direction in which the measurement tape 2 is pulled back, the pressing action by the component force of the urging force of the action portion 8 is added to the measurement tape 2. The wound mounting force is antagonized, and the tightening lock is made stable.

図３に示すようにＳ字形状に弾性変形した板バネ７の復元弾力（その自由端が測定テープ２を押圧する力）は、材料力学的には、図１のようにＣ字形状に湾曲された場合の復元弾力（同上）の略４倍とされ、従って、図３の緊合ロック状態は極めて安定したものとなる。この緊合は、作用部８と本体ケース１の内壁部との間でなされるから、前記従来例のように測定テープ２の繰出長さの影響を受けることなく安定した緊合状態とされる。尚、図のように、この緊合部位に相当する本体ケース１の内壁部に凹部１ｄを形成しておけば、作用部８が測定テープ２を凹ませるようアンカー的に作用し、これに測定テープ２の巻戻し力が付加され、その拘束効果が有効に発現されてより確実な緊合がなされる。この凹部１ｄは、別途準備され、上記繰出口１ａに着脱自在に装着される別部材（ショックアブソーバ等）に形成されるものであっても良い。 As shown in FIG. 3, the restoring elasticity of the leaf spring 7 elastically deformed into an S shape (the force with which the free end presses the measuring tape 2) is curved into a C shape as shown in FIG. 3 is approximately four times the restoring elasticity (same as above), and therefore the tightly locked state in FIG. 3 is extremely stable. Since this tightening is performed between the action portion 8 and the inner wall portion of the main body case 1, a stable tightening state is obtained without being affected by the feeding length of the measuring tape 2 as in the conventional example. . As shown in the figure, if a concave portion 1d is formed in the inner wall portion of the main body case 1 corresponding to this tightening portion, the action portion 8 acts as an anchor so as to dent the measuring tape 2, and this is measured. The unwinding force of the tape 2 is added, and the restraining effect is effectively expressed, so that more reliable bonding is performed. The recess 1d may be prepared separately and formed in a separate member (such as a shock absorber) that is detachably attached to the delivery port 1a.

繰出された測定テープ２を巻取る場合、測定テープ２の先端に外力を付加させる。例えば、フック部材２ａを、建屋壁面等の被測定対象部位に軽く押し当てると、この外力と、測定テープ２のゼンマイバネ４による巻取付勢力と、Ｘ方向の復元弾力とが相乗して、測定テープ２に追動して作用部８が図２の状態を経て図１の位置に変位しようとする。これに伴い、板バネ７は、Ｓ字形状から図２の状態を経て図１のＣ字形状に弾性変形する。図１における板バネ７のＣ字形状による作用部８の測定テープ２に対する押圧力は、ゼンマイバネ４による巻取付勢力より小さいから、測定テープ２は作用部８に相対弾性摺接しながら巻取ドラム５に自動的に巻取られてゆく。 When winding the fed measurement tape 2, an external force is applied to the tip of the measurement tape 2. For example, when the hook member 2a is lightly pressed against a measurement target site such as a building wall surface, the external force, the winding mounting force of the measuring tape 2 by the mainspring 4 and the restoring elasticity in the X direction are combined to measure the measuring tape. 2 and the action portion 8 tries to be displaced to the position shown in FIG. 1 through the state shown in FIG. Accordingly, the leaf spring 7 is elastically deformed from the S shape to the C shape of FIG. 1 through the state of FIG. Since the pressing force of the acting portion 8 due to the C-shape of the leaf spring 7 in FIG. 1 against the measuring tape 2 is smaller than the winding attachment force by the mainspring 4, the measuring tape 2 is in relative elastic sliding contact with the acting portion 8 and the winding drum 5. It will be automatically wound up.

このように、測定テープ２の所望繰出し位置でのロックは、測定テープ２を繰出すだけで自動的になされ、また、アンロック及び測定テープ２の巻取も、測定テープ２に一時的な外力を付加するだけでなされ、ロック・アンロックの為のボタン操作等が不要とされ、構造簡単で極めてハンドリングに優れる。尚、巻取りの際に測定テープ２に付加される外力は、図２のように、作用部８が測定テープ２に対して略直角に弾接する位置を通過し得る大きさであり、その位置を通過した後は外力を付加する必要がなく、上記の通り測定テープ２は自動的に巻取られる。 As described above, the measurement tape 2 is automatically locked by simply feeding the measurement tape 2, and the unlocking and winding of the measurement tape 2 are also temporarily applied to the measurement tape 2. It is made only by adding a button, and there is no need for button operation for locking / unlocking, and the structure is simple and extremely easy to handle. Note that the external force applied to the measuring tape 2 during winding is such that the action portion 8 can pass through a position where it is elastically contacted with the measuring tape 2 at a substantially right angle as shown in FIG. After passing, there is no need to apply an external force, and the measuring tape 2 is automatically wound as described above.

図４は、測定テープの繰出し位置と、必要引出し力及び引戻し力との関係を表すグラフである。（Ａ）（Ｂ）は本発明の実施例であって、（Ａ）は上記ロック装置６を備えた場合の測定テープ２の引出し時の必要引出し力を、（Ｂ）は同必要引戻し力を示す。また、（Ｃ）（Ｄ）は比較例であって、（Ｃ）は上記ロック装置６を備えない場合の測定テープ２の引出し時の必要引出し力を、（Ｄ）は同必要引戻し力を示す。このグラフから、実施例及び比較例においては、測定テープの繰出し長さ（位置）による必要引出し力及び引戻し力に大差なく、従って、ロック装置６の有無による取扱者の操作時の手指にかかる負担に差がないことが理解される。 FIG. 4 is a graph showing the relationship between the feeding position of the measuring tape and the required pulling force and pulling force. (A) (B) is an embodiment of the present invention, (A) shows the required pulling force when the measuring tape 2 is pulled when the locking device 6 is provided, and (B) shows the required pulling force. Show. Moreover, (C) and (D) are comparative examples, (C) shows the required pulling force when the measuring tape 2 is pulled out when the lock device 6 is not provided, and (D) shows the required pulling force. . From this graph, in the example and the comparative example, there is not much difference in the required pulling force and pulling force depending on the feeding length (position) of the measuring tape, and accordingly, the burden on the fingers at the time of the operation of the operator by the presence or absence of the lock device 6 It is understood that there is no difference.

図５は本発明の第２の実施形態の巻尺Ｂを示す。この巻尺Ｂは手操作によるロックレバー９を備えていることを特徴とする。即ち、該ロックレバー９は、合成樹脂の一体成型体からなり、本体ケース１の反繰出口１ａ側の隅部に一体形成されたビス孔１ｈ用支柱１ｅに基部９ａが取付けられ、操作部（ボタン）９ｂが本体ケース１の下面に露出している。基部９ａと操作部９ｂとは杆部９ｃによって連結されている。また、操作部９ｂの幅方向両端部には、巻取ドラム５の両リールガイド板５ａの周縁部に対峙する制動突起９ｅが形成されている。その他の構成は実施例１と同様であるので、共通部分に同一の符号を付し、ここではその説明を割愛する。 FIG. 5 shows a tape measure B of the second embodiment of the present invention. This tape measure B is provided with a lock lever 9 that is manually operated. That is, the lock lever 9 is made of a synthetic resin integrally molded body, and a base portion 9a is attached to a pillar 1e for a screw hole 1h that is integrally formed at a corner portion of the main body case 1 on the side of the counter feed port 1a. Button) 9 b is exposed on the lower surface of the main body case 1. The base portion 9a and the operation portion 9b are connected by a flange portion 9c. Further, braking protrusions 9e are formed at both ends in the width direction of the operation portion 9b so as to face the peripheral portions of both reel guide plates 5a of the winding drum 5. Since other configurations are the same as those of the first embodiment, the same reference numerals are given to common portions, and the description thereof is omitted here.

このロックレバー９を設けることにより、上記のように、測定テープ２を所望長さに繰出し、ロック装置６でロックした状態で、測定テープ２の先端が不意に何かに当たり、測定テープ２に巻戻し方向の外力が付加されても、ロック解除されて測定テープ２が巻取られることがないよう扱うことができる。即ち、測定テープ２を所望長さに繰出した状態で、ロックレバー９の操作部９ｂを本体ケース１側に押圧操作し、杆部９ｃの弾性変形をして制動突起９ｅをリールガイド板５ａの周縁部に押当させ、巻取ドラム５の回転を不能に拘束しておくようにすることができる。この場合、通常の使用時において、本体ケース１を把持して測定テープ２の繰出操作や測定作業がなされるが、この把持力を少し強くするだけで上記巻取ドラム５を回転不能に拘束し、測定テープ２の不意の巻取を防止することができる。従って、この操作は煩わしさを伴うものではなく、しかも、ロックレバー９が設けられる位置は、把持する手指に隠される位置となるから、シンプルな外観も維持される。 By providing the lock lever 9, as described above, the measuring tape 2 is extended to a desired length and locked by the locking device 6, and the tip of the measuring tape 2 hits something unexpectedly and is wound around the measuring tape 2. Even if an external force in the returning direction is applied, the measuring tape 2 can be handled so that it is not unlocked and the measuring tape 2 is wound. That is, in a state where the measuring tape 2 is drawn out to a desired length, the operation portion 9b of the lock lever 9 is pressed toward the main body case 1 to elastically deform the flange portion 9c, so that the braking protrusion 9e is attached to the reel guide plate 5a. It is possible to press against the peripheral edge to restrain the rotation of the winding drum 5 from being impossible. In this case, during normal use, the main body case 1 is gripped and the measuring tape 2 is fed out or measured, but the winding drum 5 is restrained to be non-rotatable only by slightly increasing the gripping force. Unintentional winding of the measuring tape 2 can be prevented. Therefore, this operation is not troublesome, and the position at which the lock lever 9 is provided is a position hidden by the finger to be gripped, so that a simple appearance is maintained.

また、図３のように測定テープ２を繰出す際に、所望長さより繰出し過ぎた場合、測定テープ２の先端に外力を付加してロック装置６のロックを解除すると測定テープ２は、ゼンマイバネ４の巻取付勢力により元の待機位置まで巻取られてしまう。その後、この待機位置から再度測定テープ２を引出し、所望長さにまで繰出す操作が必要とされる。而して、本実施形態の巻尺Ｂにおいては、操作者は本体ケース１を把持し、上記巻取りの際に測定テープ２が所望長さに至るとロックレバー９の操作部９ｂを本体ケース１側に押圧操作し、杆部９ｃの弾性変形をして制動突起９ｅをリールガイド板５ａの周縁部に押当させ、巻取ドラム５の回転を阻止する。これによって、再度繰出しを行うことなく測定テープ２を所望長さ位置にロックさせることができる。その後、ロックレバー９の押圧操作を止めると、このロックが解除され、測定テープ２は、ゼンマイバネ４の巻戻付勢力により巻取られることは上記と同様である。 Further, when the measuring tape 2 is fed out more than the desired length as shown in FIG. 3, if the locking device 6 is unlocked by applying an external force to the tip of the measuring tape 2, the measuring tape 2 is moved to the spring spring 4. It is wound up to the original standby position by the winding mounting force. Thereafter, an operation of drawing the measuring tape 2 from the standby position again and feeding it to a desired length is required. Thus, in the tape measure B of the present embodiment, the operator grips the main body case 1, and when the measuring tape 2 reaches a desired length during the winding, the operation portion 9b of the lock lever 9 is moved to the main body case 1. To the side, elastically deform the flange 9c to press the braking projection 9e against the peripheral edge of the reel guide plate 5a, thereby preventing the winding drum 5 from rotating. As a result, the measuring tape 2 can be locked at a desired length position without feeding again. Thereafter, when the pressing operation of the lock lever 9 is stopped, the lock is released, and the measuring tape 2 is wound up by the unwinding urging force of the mainspring spring 4 as described above.

図６、図７は本発明の第３の実施形態の巻尺Ｃを示す。この巻尺Ｃにおけるロック装置６は、基端部１０ａをして前記本体ケース１の内壁に形成された支持ピン１ｆを介し揺動可能に枢支された板バネ１０と、その先端に固着された合成樹脂或いはゴム等の摩擦部材からなる作用部１１とより構成される。作用部１１は、待機位置では測定テープ２の巻取方向に向き、本体ケース１内の繰出部１ｂにおける測定テープ２の直線部分２ｂの表面に自重で接した状態に維持されるが、別の板バネ等（不図示）を付加し、弾接させるようにすることも可能である。この状態から、測定テープ２を繰出してゆくと、作用部１１の測定テープ２の表面に対する摩擦作用によって、作用部１１が測定テープ２の繰出動作に追動し、これに伴い板バネ１０が弾性変形を伴い繰出側に揺動する。 6 and 7 show a tape measure C according to a third embodiment of the present invention. The lock device 6 in the tape measure C is fixed to a distal end of a leaf spring 10 pivotally supported through a support pin 1f formed on the inner wall of the body case 1 with a base end portion 10a. It is comprised from the action part 11 which consists of friction members, such as a synthetic resin or rubber | gum. The action part 11 is maintained in a state in which it is directed in the winding direction of the measurement tape 2 at the standby position and is in contact with the surface of the linear portion 2b of the measurement tape 2 in the feeding part 1b in the main body case 1 by its own weight. It is also possible to add a leaf spring or the like (not shown) for elastic contact. When the measuring tape 2 is fed out from this state, the acting portion 11 is driven by the feeding action of the measuring tape 2 by the frictional action of the acting portion 11 on the surface of the measuring tape 2, and the leaf spring 10 is elastically moved accordingly. Swings to the feeding side with deformation.

上記板バネ１０の弾性変形を伴う繰出側への揺動過程で、作用部１１が測定テープ２の表面に対して略直角に弾接する位置（図７の２点鎖線位置）を通過し、その後板バネ１０は反転し、作用部１１は繰出側に向くようになる。この略直角に弾接する位置では、板バネ１０に蓄積された弾性エネルギーは最も大（測定テープ２を押圧する力が最も大）であるが、この状態で横方向の力が付加されると、このエネルギーを放出するよう作用し、図７に示すような繰出側に向いた位置への弾性変形が容易になされる。そして、本体ケース１のテープ繰出口１ａには規制部１ｇが設けられているから、板バネ１０はこの規制部１ｇに当接すると、それ以上の揺動が阻止される。 In the process of swinging the leaf spring 10 toward the feeding side accompanied by elastic deformation, the action portion 11 passes through a position where it is elastically contacted with the surface of the measuring tape 2 at a substantially right angle (two-dot chain line position in FIG. 7), and thereafter The leaf spring 10 is reversed, and the action part 11 is directed to the feeding side. At the position of elastic contact at a substantially right angle, the elastic energy accumulated in the leaf spring 10 is the largest (the force that presses the measuring tape 2 is the largest), but when a lateral force is applied in this state, This energy is released so that the elastic deformation to the position facing the feeding side as shown in FIG. 7 is facilitated. And since the regulation part 1g is provided in the tape delivery opening 1a of the main body case 1, if the leaf | plate spring 10 contact | abuts to this regulation part 1g, the further rocking | fluctuation will be blocked | prevented.

測定テープ２を所望の繰出位置に繰出し、測定テープ２を手放すと、測定テープ２は、ゼンマイバネ４の巻取付勢力により引戻されようとする。しかし、ロック装置６の作用部１１には、上記規制部１ｇで規制され繰出側に弾性変形した板バネ１１の復元弾力が作用しているから、測定テープ２は作用部１１と本体ケース１の内壁との間に緊合状態とされ、その引戻しが阻止され規制部１ｇで規制された位置でロックされる。この場合、作用部１１が測定テープ２の引戻し方向に対向する方向に向いた状態で測定テープ２に弾接するから、作用部１１の上記付勢力の分力による押接作用と測定テープ２に付加される巻取付勢力が拮抗し、上記緊合ロックが安定的になされる。 When the measuring tape 2 is fed to a desired feeding position and the measuring tape 2 is released, the measuring tape 2 tends to be pulled back by the winding attachment force of the mainspring spring 4. However, since the restoring elasticity of the leaf spring 11 which is regulated by the regulating part 1g and elastically deformed to the feeding side is acting on the action part 11 of the lock device 6, the measuring tape 2 is provided between the action part 11 and the main body case 1. It is brought into a tightly coupled state with the inner wall, and its pullback is blocked and locked at a position regulated by the regulating part 1g. In this case, since the action part 11 is elastically contacted with the measurement tape 2 in a direction facing the pulling-back direction of the measurement tape 2, the pressing action by the component force of the urging force of the action part 11 is added to the measurement tape 2. The wound mounting force is antagonized, and the tightening lock is made stable.

そして、図７の白抜矢示のように、測定テープ２に外力が付加されると、上記板バネ１０の復元弾力とこの外力とが相乗して、測定テープ２に追動して作用部１１が図７の２点鎖線位置を経て図６の位置に変位しようとする。これに伴い、板バネ１１は、図７の反転位置から図６の待機位置に弾性変形を伴い揺動する。この動作によって、上記ロック状態が解除され、測定テープ２は巻取ドラム５に自動的に巻取られる。その他の構成は、上記実施例と同様であるので共通部分に同一の符号を付し、ここではその説明を割愛する。 Then, as shown by the white arrow in FIG. 7, when an external force is applied to the measuring tape 2, the restoring elasticity of the leaf spring 10 and this external force synergize and follow the measuring tape 2 to act. 11 attempts to be displaced to the position of FIG. 6 through the position of the two-dot chain line of FIG. Accordingly, the leaf spring 11 swings from the reverse position in FIG. 7 to the standby position in FIG. 6 with elastic deformation. By this operation, the locked state is released, and the measuring tape 2 is automatically wound around the winding drum 5. Since other configurations are the same as those in the above embodiment, common portions are denoted by the same reference numerals, and description thereof is omitted here.

図８、図９は本発明の第４の実施形態の巻尺Ｄを示す。この巻尺Ｄにおけるロック装置６は、基端部１２ａをして本体ケース１の内壁に形成された支持ピン１ｆを介し揺動可能に枢支された硬質合成樹脂若しくは金属製の揺動アーム１２と、該揺動アーム１２の先側に固着されたゴム等からなる弾性体（弾性部材）１３と、該弾性体１３の測定テープと弾接する部分としての弾性摩擦作用部１４とより構成される。弾性体１３及び作用部１４は、待機位置では測定テープ２の巻取方向に向き、本体ケース１内の繰出部１ｂにおける測定テープ２の直線部分２ｂの表面に作用部１４が自重で接した状態に維持されるが、上記と同様別の板バネ等（不図示）を付加し、弾接させるようにすることも可能である。この状態から、測定テープ２を繰出してゆくと、作用部１４の測定テープ２の表面に対する摩擦作用によって、作用部１４が測定テープ２の繰出動作に追動し、これに伴い弾性体１３の弾性変形を伴い揺動アーム１２が繰出側に揺動する。 8 and 9 show a tape measure D of the fourth embodiment of the present invention. The locking device 6 in the tape measure D includes a rocking arm 12 made of hard synthetic resin or metal pivotally supported via a support pin 1f formed on the inner wall of the main body case 1 with a base end portion 12a. An elastic body (elastic member) 13 made of rubber or the like fixed to the front side of the swing arm 12 and an elastic friction acting portion 14 as a portion that elastically contacts the measuring tape of the elastic body 13. The elastic body 13 and the action portion 14 are oriented in the winding direction of the measurement tape 2 at the standby position, and the action portion 14 is in contact with the surface of the linear portion 2b of the measurement tape 2 in the feeding portion 1b in the main body case 1 by its own weight. However, it is also possible to add another leaf spring or the like (not shown) in the same manner as described above so as to be elastically contacted. When the measuring tape 2 is fed out from this state, the acting portion 14 follows the feeding operation of the measuring tape 2 due to the frictional action of the acting portion 14 on the surface of the measuring tape 2, and accordingly, the elasticity of the elastic body 13. With the deformation, the swing arm 12 swings to the feeding side.

上記揺動アーム１２の弾性体１３の弾性変形を伴う繰出側への揺動過程で、作用部１４が測定テープ２の表面に対して略直角に弾接する位置（図９の２点鎖線位置）を通過し、その後揺動アーム１２は反転し、弾性体１３および作用部１４は繰出側に向くようになる。この略直角に弾接する位置では、弾性体１３に蓄積された弾性エネルギーは最も大（測定テープ２を押圧する力が最も大）であるが、この状態で横方向の力が付加されると、このエネルギーを放出するよう作用し、図９に示すような繰出側に向いた位置への揺動が容易になされる。そして、本体ケース１のテープ繰出口１ａには上記同様規制部１ｇが設けられているから、弾性体１３がこの規制部１ｇに当接すると、揺動アーム１２のそれ以上の揺動が阻止される。 In the swinging process of the swinging arm 12 to the feeding side accompanied by the elastic deformation of the elastic body 13, the position where the action portion 14 elastically contacts with the surface of the measuring tape 2 at a substantially right angle (two-dot chain line position in FIG. 9). After that, the swing arm 12 is reversed, and the elastic body 13 and the action portion 14 are directed to the feeding side. At the position of elastic contact at a substantially right angle, the elastic energy accumulated in the elastic body 13 is the largest (the force that presses the measuring tape 2 is the largest), but when a lateral force is applied in this state, This energy is released so that it can be easily swung to a position facing the feeding side as shown in FIG. Since the restriction part 1g is provided at the tape outlet 1a of the main body case 1 as described above, when the elastic body 13 comes into contact with the restriction part 1g, the swinging arm 12 is prevented from further swinging. The

測定テープ２を所望の繰出位置に繰出し、測定テープ２を手放すと、測定テープ２は、ゼンマイバネ４の巻取付勢力により引戻されようとする。しかし、ロック装置６の作用部１４には、上記規制部１ｇで規制され繰出側に弾性変形した弾性体１３の復元弾力が作用しているから、測定テープ２は作用部１４と本体ケース１の内壁との間に緊合状態とされ、その引戻しが阻止され規制部１ｇで規制された位置でロックされる。この場合、作用部１４が測定テープ２の引戻し方向に対向する方向に向いた状態で測定テープ２に弾接するから、作用部１４の上記付勢力の分力による押接作用と測定テープ２に付加される巻取付勢力が拮抗し、上記緊合ロックが安定的になされる。 When the measuring tape 2 is fed to a desired feeding position and the measuring tape 2 is released, the measuring tape 2 tends to be pulled back by the winding attachment force of the mainspring spring 4. However, since the elastic force of the elastic body 13 that is restricted by the restriction portion 1g and elastically deformed on the feeding side is acting on the action portion 14 of the lock device 6, the measuring tape 2 is provided between the action portion 14 and the main body case 1. It is brought into a tightly coupled state with the inner wall, and its pullback is blocked and locked at a position regulated by the regulating part 1g. In this case, since the action part 14 is elastically contacted with the measurement tape 2 in a direction facing the pulling-back direction of the measurement tape 2, the pressing action by the component force of the urging force of the action part 14 is added to the measurement tape 2. The wound mounting force is antagonized, and the tightening lock is made stable.

そして、図９の白抜矢示のように、測定テープ２に外力が付加されると、上記弾性体１３の復元弾力とこの外力とが相乗して、測定テープ２に追動して作用部１４が図９の２点鎖線位置を経て図８の位置に変位しようとする。これに伴い、揺動アーム１２は、弾性体１３の弾性変形を伴い、図９の反転位置から図８の待機位置に揺動する。この動作によって、上記ロック状態が解除され、測定テープ２は巻取ドラム５に自動的に巻取られる。その他の構成は、上記実施例と同様であるので共通部分に同一の符号を付し、ここでもその説明を割愛する。また、これら実施例３、４の巻尺Ｃ、Ｄにも実施例２の手操作によるロックレバー９を採用し得ることは言うまでもない。 9, when an external force is applied to the measurement tape 2, the restoring elasticity of the elastic body 13 and this external force are synergistic and follow the measurement tape 2 to act. 14 is going to be displaced to the position of FIG. 8 through the position of the two-dot chain line of FIG. Accordingly, the swing arm 12 swings from the reverse position in FIG. 9 to the standby position in FIG. 8 with the elastic deformation of the elastic body 13. By this operation, the locked state is released, and the measuring tape 2 is automatically wound around the winding drum 5. Since other configurations are the same as those in the above embodiment, the same reference numerals are given to common portions, and the description thereof is omitted here. Needless to say, the manual operation of the lock lever 9 of the second embodiment can also be adopted for the tape measures C and D of the third and fourth embodiments.

図１０は本発明の第５の実施形態の巻尺Ｅを示す。この巻尺Ｅにおけるロック装置６は、基端部１５ａをして本体ケース１の内壁に形成された支持ピン１ｆを介し揺動可能に枢支された硬質合成樹脂若しくは金属製の揺動アーム１５と、該揺動アーム１５の先側に一体形成された摩擦作用部１６と、揺動アーム１５を測定テープ２の巻取側に弾性付勢する板バネ（弾性部材）１７とより構成される。揺動アーム１５及び作用部１６は、待機位置では測定テープ２の巻取方向に向き、本体ケース１内の繰出部１ｂにおける測定テープ２の直線部分２ｂの表面に作用部１６が自重で接した状態に維持されるが、上記と同様別の板バネ等（不図示）を付加し、弾接させるようにすることも可能である。この状態から、測定テープ２を繰出してゆくと、作用部１６の測定テープ２の表面に対する摩擦作用によって、作用部１６が測定テープ２の繰出動作に追動し、これに伴い板バネ１７の弾性変形を伴い揺動アーム１５が繰出側に揺動する。 FIG. 10 shows a tape measure E according to the fifth embodiment of the present invention. The locking device 6 in the tape measure E includes a hard synthetic resin or metal swing arm 15 pivotally supported through a support pin 1f formed on the inner wall of the main body case 1 with a base end portion 15a. The friction acting portion 16 is integrally formed on the front side of the swing arm 15, and a leaf spring (elastic member) 17 that elastically biases the swing arm 15 toward the winding side of the measuring tape 2. The swing arm 15 and the action portion 16 are oriented in the winding direction of the measurement tape 2 at the standby position, and the action portion 16 comes into contact with the surface of the linear portion 2b of the measurement tape 2 in the feeding portion 1b in the main body case 1 by its own weight. Although it is maintained in the state, it is also possible to add another leaf spring or the like (not shown) as described above to make it elastically contact. When the measuring tape 2 is fed out from this state, the acting portion 16 follows the feeding operation of the measuring tape 2 due to the frictional action of the acting portion 16 on the surface of the measuring tape 2, and accordingly the elasticity of the leaf spring 17. With the deformation, the swing arm 15 swings to the feeding side.

そして、規制部１ｇで規制される２点鎖線位置では、板バネ１７の弾性変形に伴う復元弾力によって、測定テープ２が作用部１６と本体ケース１の内壁との間に緊合状態とされ、その引戻しが阻止され規制部１ｇで規制された位置でロックされる。このようなロック機構及びその後のロック解除機構は上記と同様である。また、その他の構成は上記と同様であるので、ここでも共通部分に同一の符号を付しその説明を割愛する。 And, at the two-dot chain line position regulated by the regulating part 1g, the measuring tape 2 is brought into a tight state between the action part 16 and the inner wall of the main body case 1 by the restoring elasticity accompanying the elastic deformation of the leaf spring 17. The pullback is blocked and locked at the position regulated by the regulating part 1g. Such a locking mechanism and the subsequent unlocking mechanism are the same as described above. In addition, since the other configuration is the same as described above, the same reference numerals are given to the common parts and the description thereof is omitted.

尚、上記各実施例における巻尺Ａ、Ｂ、Ｃ、Ｄ、Ｅの外形状は図例のものに限定されないことは当然である。また、ロック装置６の具体的構成は例示のものに限定されず、本発明の機能を奏するものであれば、その他の構成をこれに充当させることも可能である。更に、本体ケース１も硬質合成樹脂の成型体に限定されず、軽金属の成型体等であっても良いことは言うまでもない。加えて、規制部１ｃとしては、本体ケース１に一体形成されたもの以外に、本体ケース１に取付けられるピン状のもの、或いは本体ケース１の内壁が兼ねるもの等であっても良い。 Of course, the outer shapes of the tape measures A, B, C, D, and E in the above embodiments are not limited to those shown in the drawings. Further, the specific configuration of the locking device 6 is not limited to the illustrated one, and other configurations can be applied to this as long as the functions of the present invention are exhibited. Furthermore, the main body case 1 is not limited to a molded body of hard synthetic resin, and it goes without saying that it may be a molded body of light metal. In addition, as the restricting portion 1c, in addition to the one integrally formed with the main body case 1, a pin-shaped one attached to the main body case 1 or the inner wall of the main body case 1 may be used.

図１は本発明の巻尺の第１の実施形態を示す部分切欠横断平面図である。FIG. 1 is a partially cutaway plan view showing a first embodiment of the tape measure of the present invention. 同巻尺における測定テープの繰出状態を示す同様図である。It is the same figure which shows the supply state of the measuring tape in the tape measure. 同繰出位置で測定テープを自動ロックした状態を示す同様図である。It is the same figure which shows the state which locked the measuring tape automatically in the same feeding position. 測定テープの繰出し位置と必要引出し力及び引戻し力との関係を表すグラフである。It is a graph showing the relationship between the drawing | feeding-out position of a measurement tape, required drawing force, and drawing-back force. 他の実施形態の図１と同様図である。It is a figure similar to FIG. 1 of other embodiment. 更に他の実施形態の図１と同様図である。Furthermore, it is the same figure as FIG. 1 of other embodiment. 同実施形態における測定テープの繰出位置で測定テープを自動ロックした状態を示す同様図である。It is the same figure which shows the state which locked the measuring tape automatically in the delivery position of the measuring tape in the embodiment. 更に他の実施形態の図１と同様図である。Furthermore, it is the same figure as FIG. 1 of other embodiment. 同実施形態における測定テープの繰出位置で測定テープを自動ロックした状態を示す同様図である。It is the same figure which shows the state which locked the measuring tape automatically in the delivery position of the measuring tape in the embodiment. 更に他の実施形態の図１と同様図である。Furthermore, it is the same figure as FIG. 1 of other embodiment.

Explanation of symbols

１本体ケース
１ａテープ繰出口
１ｂ繰出部
１ｃ規制部
１ｄ凹部（内壁部）
２測定テープ
３巻取軸
４ゼンマイバネ（巻取付勢手段）
６ロック装置
７板バネ（弾性部材）
７ａ基端部
８作用部
１０板バネ（弾性部材）
１３弾性体（弾性部材）
１４作用部
１６作用部
１７板バネ（弾性部材）
Ａ、Ｂ、Ｃ、Ｄ、Ｅ巻尺
DESCRIPTION OF SYMBOLS 1 Main body case 1a Tape feeding exit 1b Feeding part 1c Control part 1d Recessed part (inner wall part)
2 Measuring tape 3 Winding shaft 4 Spring spring (winding mounting force means)
6 Locking device 7 Leaf spring (elastic member)
7a Base end part 8 Action part 10 Leaf spring (elastic member)
13 Elastic body (elastic member)
14 action part 16 action part 17 leaf spring (elastic member)
A, B, C, D, E Tape measure

Claims

The main body case, the measuring tape housed in the main body case so as to be rewound and fed out, the urging means for winding and urging the measuring tape, and fed out against the urging force of the urging means A tape measure provided with a locking device that locks and holds the measuring tape in the feeding position,
The locking device is composed of an elastic member having an action part that is always in contact with the measuring tape of the feeding part. When the measuring tape is fed, the elastic member is elastically deformed by the follow-up of the acting part accompanying the feeding of the measuring tape. When the working part is displaced from the standby position to the tape feed-out part side and the feeding force is not added, the measuring tape is tightly locked between the working part and the inner wall of the main body case by the restoring elasticity of the elastic member, When an external force in the winding direction is applied to the fed measurement tape, the elastic member is restored and the locked state is released, the action part returns to the standby position, and the measurement tape slides on the action part while sliding. A tape measure characterized in that it is wound by the biasing force of the biasing means.

The tape measure of claim 1,
The elastic member comprises a leaf spring, a base end portion of the leaf spring is fixed to an inner wall of the main body case, and the action portion is formed at a tip portion thereof. The leaf spring has a tip action portion in a standby state. It is C-shaped facing the winding direction of the measuring tape. When the measuring tape is unwound, it is deformed into an S-shape by the elastic deformation, and the elastic force to restore the S-shape to the C-shape A tape measure characterized in that the measuring tape is tightly locked between the inner wall of the main body case.

The tape measure according to claim 2,
A tape measure characterized in that the main body case is provided with a restricting portion for promoting deformation of the leaf spring into an S-shape.

In the tape measure according to claim 2 or 3,
The tape measure characterized in that the action portion is composed of a friction member fixed to the tip of the leaf spring.

The tape measure of claim 1,
The elastic member is a leaf spring, the leaf spring is pivotally supported on the inner wall of the main body case with its base end portion, and the action portion is formed at the distal end thereof. In the standby state, the tip working portion is positioned so as to face the winding direction of the measuring tape, and when the measuring tape is fed, it is reversed and elastically deformed to the measuring tape feeding side, and the elastic deformation state is restored to the standby position side. A tape measure characterized in that the measuring tape is tightly locked between the action portion and the inner wall of the main body case by the elasticity to be applied.

The tape measure of claim 1,
The elastic member is made of an elastic body fixed to the front side of a swing arm pivotally supported on the inner wall of the main body case, and a portion of the elastic body that is elastically contacted with the measuring tape is an action portion, and the swing arm In the standby state, the elastic body is positioned so as to face the winding direction of the measuring tape, and when the measuring tape is fed out, it is inverted with the elastic deformation of the elastic body and swings toward the feeding side of the measuring tape. A tape measure characterized in that a measuring tape is tightly locked between an action portion and an inner wall of a main body case by an elastic force to restore from the deformed state to the standby position side.

In the tape measure in any one of Claims 1 thru | or 6,
A tape measure characterized in that the measuring tape is a convex tape made of steel plate.