JP2007092981A - Spring device utilizing winding and tightening force - Google Patents

Spring device utilizing winding and tightening force Download PDF

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JP2007092981A
JP2007092981A JP2005326712A JP2005326712A JP2007092981A JP 2007092981 A JP2007092981 A JP 2007092981A JP 2005326712 A JP2005326712 A JP 2005326712A JP 2005326712 A JP2005326712 A JP 2005326712A JP 2007092981 A JP2007092981 A JP 2007092981A
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spiral spring
winding
spring
tightening
shaft portion
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JP4610472B2 (en
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Kazumasa Iida
和正 飯田
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HAYAMIZU HATSUJO KK
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HAYAMIZU HATSUJO KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a spring device capable of dispensing with preliminary winding for giving winding extra force and a stopper and obtaining stable torque. <P>SOLUTION: This spring device is constituted in such a way that it is provided with a winding spring, a shaft part, and a case incorporating a spiral spring, winding and tightening force is given to the spiral spring, a shaft part having larger outside diameter than inside diameter of winding and tightening in a free condition is inserted and fixed in an inner side end part of the spiral spring, and an outer side end part of the spiral spring is fixed to the case. If outside diameter of the shaft part on an inner side is smaller than inside diameter of winding and tightening in a free condition, it is slowly wound and tightened when winding and tightening end. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

回転力駆動を発生させるための渦巻きバネ装置に関する。   The present invention relates to a spiral spring device for generating a rotational force drive.

ベルト類又はコード類を巻き取る駆動源としてあるいは回転力発生装置として渦巻きバネはゼンマイとして広く採用されている。
従来のゼンマイ装置の構造例を図４に示す。
渦巻きバネ１１１をケース１１３に内装してあり、渦巻きバネの内側端部１１１ａを軸部１１２に固定し、外側端部１１１ｂをケース側に固定してある。
図４（ａ）はコード類又はベルト類２０を巻き取った状態を示し、図４（ｂ）はベルト類を引出した状態を示す。
ベルト類をｓの方向に引き出すとベルト類は軸部シャフト等に巻装してあり、軸部１１２はｗ０の方向に回転し、図４（ｂ）に示すように渦巻きバネを軸部側に巻き取るように回転し、ベルト類から手を放すと、バネが広がる方向に回転力が発生し、ベルト類が巻き取られる構造になっていた。
従って、ベルト類が巻き取られた（ａ）の状態でも巻き取り余力を残しておく必要があるため、軸部を予巻きし、かつベルト類にストッパー２１等を取り付けて渦巻きバネが自然開放しないようにしなければならなかった。
特開昭６３−１８０７３７号に開示する渦巻きバネにおいても巻き締めて使用するものである。 Spiral springs are widely used as springs as drive sources for winding belts or cords or as rotational force generators.
An example of the structure of a conventional mainspring device is shown in FIG.
A spiral spring 111 is housed in the case 113, the inner end 111a of the spiral spring is fixed to the shaft portion 112, and the outer end 111b is fixed to the case side.
4A shows a state in which the cords or belts 20 are wound up, and FIG. 4B shows a state in which the belts are pulled out.
Belting Pulling out belts in the direction of s is Yes and wound on the shaft portion the shaft like the shaft 112 rotates in the direction of w 0, the shaft portion side spiral spring as shown in FIG. 4 (b) When the belt is rotated and released from the belts, a rotational force is generated in the direction in which the spring spreads, and the belts are wound up.
Accordingly, since it is necessary to leave a winding force even in the state (a) in which the belts are wound, the spiral spring is not naturally opened by pre-winding the shaft portion and attaching the stopper 21 or the like to the belts. Had to do so.
The spiral spring disclosed in JP-A-63-180737 is also used by being tightened.

特開昭６３−１８０７３７号公報JP-A 63-180737

本発明は、上記背景技術に有する技術的課題に鑑みて、巻き取り余力を付与するための予巻きやストッパーなどを不要とし、安定したトルクが得られるバネ装置の提供を目的とする。   The present invention has been made in view of the technical problems of the background art described above, and an object of the present invention is to provide a spring device that eliminates the need for pre-winding or a stopper for imparting a take-up surplus force and obtains a stable torque.

請求項１記載に係るバネ装置は、渦巻きバネと、軸部と、渦巻きバネを内装したケースとを備え、渦巻きバネは、巻き締まり力を付与してあり、渦巻きバネの内側端部は、自由状態の巻き締まり内径よりも大きい外径の軸部を挿入固定してあり、渦巻きバネの外側端部は、ケースに固定してあることを特徴とする。
ここで、渦巻きバネに巻き締まり力を付与してあるとは、長尺の帯状板材を巻き締まるように渦巻き状にバネ加工したものであり、自然状態で巻き締まるようになっていることをいう。
よって、本発明に係るバネ装置は渦巻きバネを巻き広げ側で使用する点に特徴があり、渦巻きバネの巻き締まり力を回転駆動力として活用するものである点でコード類又はベルト類の巻き取り装置等として広く利用できる。 The spring device according to claim 1 includes a spiral spring, a shaft portion, and a case in which the spiral spring is housed. The spiral spring is provided with a tightening force, and an inner end portion of the spiral spring is free. A shaft portion having an outer diameter larger than the winding inner diameter in the state is inserted and fixed, and the outer end portion of the spiral spring is fixed to the case.
Here, that the tightening force is applied to the spiral spring means that a long strip-shaped plate material is processed into a spiral shape so as to be tightened, and is wound in a natural state. .
Therefore, the spring device according to the present invention is characterized in that the spiral spring is used on the unwinding side, and the winding of the cords or belts is used in that the winding tightening force of the spiral spring is used as the rotational driving force. It can be widely used as a device.

請求項２記載に係るバネ装置は、渦巻きバネと、軸部と、渦巻きバネを内装したケースとを備え、渦巻きバネは、巻き締まり力を付与してあり、渦巻きバネの内側端部は、自由状態の巻き締まり内径よりも小さい外径の軸部に固定してあり、渦巻きバネの外側端部は、ケースに固定してあることを特徴とする。
請求項２記載の発明は、渦巻きバネの内側端部を固定する軸部外径を請求項１とは逆に、自由状態の巻き締まり内径よりも小さくしたものである。
請求項１記載の発明のように、軸部外径を渦巻きバネの自由状態の巻き締まり内径より大きくして、その内側に挿入固定すると巻き戻し初期から安定したトルクが得られるが、逆にベルト類を巻き取り終了時にもトルクが働いていることになり、ベルト類を最後まで力強く巻き取るのには効果的であっても、ベルト類を最後にはゆっくり巻き取るソフト感が得られない。
そこで、請求項２記載の発明は、内側軸部の外径を渦巻きバネの自由状態の内径よりも小さくし、渦巻きバネの巻き締まり終了時には、軸部に付加される巻き締まり方向のトルクが生じないようにすることで、ベルト類の巻取り終了時にソフト感を付与することができる。 The spring device according to claim 2 includes a spiral spring, a shaft portion, and a case in which the spiral spring is housed, and the spiral spring is provided with a tightening force, and the inner end portion of the spiral spring is free. The outer end of the spiral spring is fixed to the case, and is fixed to a shaft having an outer diameter smaller than the inner diameter of the tightened winding.
In the second aspect of the invention, the outer diameter of the shaft portion for fixing the inner end portion of the spiral spring is made smaller than the inner diameter of the tightening in the free state, contrary to the first aspect.
As in the first aspect of the present invention, when the outer diameter of the shaft portion is made larger than the inner diameter of the spiral spring in the free state and the inner portion thereof is inserted and fixed, a stable torque can be obtained from the initial stage of rewinding. Even when the winding of the belt is completed, the torque works, and although it is effective to wind up the belt strongly until the end, the soft feeling of winding the belt slowly at the end cannot be obtained.
Therefore, the invention according to claim 2 makes the outer diameter of the inner shaft portion smaller than the inner diameter in the free state of the spiral spring, and at the end of the tightening of the spiral spring, torque in the tightening direction applied to the shaft portion is generated. By avoiding this, a soft feeling can be imparted at the end of winding of the belts.

本請求項１に係るバネ装置においては、渦巻きバネに巻き締まり力を付与するとともに渦巻きバネの内側端部（軸部側端部）に自由状態の巻き締まり内径よりも大きい外径の軸部を挿入して渦巻きバネが開く方向に予備的な荷重を与えたことにより、ベルトが完全に巻き取られた状態でもバネに余力が残っているので、従来の巻き締まり側使用のバネに比較して予巻きやベルト側のストッパーが不要になる。
また渦巻きバネを広がり側で使用することにより安定したトルクが得られる。
また、請求項２記載の発明のように、内側の軸部外径をバネの自由状態の内径より小さくした場合には、渦巻きバネの巻き締まり終了時には軸部に回転方向の「アソビ」が生じ、ゆっくりと巻き締まる。 In the spring device according to the first aspect, a winding force is applied to the spiral spring, and a shaft portion having an outer diameter larger than the tightening inner diameter in a free state is provided on the inner end portion (shaft side end portion) of the spiral spring. By applying a preliminary load in the direction in which the spiral spring opens, the remaining force remains in the spring even when the belt is completely wound up. No pre-winding or belt-side stopper is required.
A stable torque can be obtained by using a spiral spring on the spreading side.
Further, when the outer diameter of the inner shaft portion is made smaller than the inner diameter of the free state of the spring as in the second aspect of the invention, the “asobi” in the rotational direction is generated in the shaft portion at the end of tightening of the spiral spring. Wind up slowly.

本発明に係るバネ装置１０の例を図１に示す。
本発明にて使用する渦巻きバネ１１は図１（ｃ）に示すように自由状態で巻き締まるように加工してある。
渦巻きバネの内側の内径ｄ０に対して図１（ａ）に示すようにｄ０よりも外径ｄ１の方が大きい軸部１２を挿入して渦巻きバネの内側端部１１ａを軸部の取付部１２ａに連結固定してある。
渦巻きバネ１１はケース１３に内装してあるとともに、渦巻きバネの外側端部１１ｂをケース側の連結部１３ａに連結固定してあり、軸部とケースとは相互に同軸回転可能になっている。
図１（ｂ）に示すように例えば軸部１２側に図１では紙面の奥側にシャフト等を連結してベルト類２０を巻装してある場合に、ケース１３が回転しないように固定してあり、ベルト類２０をｓの方向に引き出すと、軸部１２はｗの方向に回転し、渦巻きバネが図１（ｂ）に示すように渦がほぐれる方向に巻き広がる。
すると軸部１２にｆｗで示すように巻き締まる方向に復元力が発生する。
軸部１２には引き出し始めから復元力が発生するのでベルト類に巻き取りストッパー等が不要である。
なお軸部１２とケース１３は相対的に回転する方向に復元力が発生するのでベルト類は軸部側とケース側のどちら側に巻装してもよい。
また、巻き広がり初期から安定した復元力が発生するので回転力を必要とするゼンマイ駆動源としても各種利用できる。 An example of a spring device 10 according to the present invention is shown in FIG.
The spiral spring 11 used in the present invention is processed so as to be wound in a free state as shown in FIG.
By inserting the shaft portion 12 toward the outer diameter d 1 is larger than d 0 as shown in FIG. 1 (a) with respect to the inner diameter d 0 of the inner spiral spring shank the inner end 11a of the spiral spring It is connected and fixed to the mounting portion 12a.
The spiral spring 11 is housed in the case 13, and the outer end 11b of the spiral spring is connected and fixed to the case-side connecting portion 13a so that the shaft portion and the case can rotate coaxially with each other.
As shown in FIG. 1B, for example, when the belts 20 are wound around the shaft portion 12 side with a shaft or the like connected to the back side of the paper surface in FIG. 1, the case 13 is fixed so as not to rotate. When the belts 20 are pulled out in the direction s, the shaft portion 12 rotates in the direction w, and the spiral spring spreads in the direction in which the vortex is loosened as shown in FIG.
Then, a restoring force is generated in the direction in which the shaft portion 12 is tightened as indicated by fw.
Since a restoring force is generated in the shaft portion 12 from the beginning of the drawing, a winding stopper or the like is not necessary for the belts.
Since the restoring force is generated in the direction in which the shaft portion 12 and the case 13 rotate relatively, the belts may be wound on either the shaft portion side or the case side.
Further, since a stable restoring force is generated from the initial stage of winding spread, it can be used in various ways as a spring driving source that requires a rotational force.

図２には、本発明に係るバネ装置の他の実施例を示す。
この場合には、図３に示した渦巻きバネの自由状態の内側端部内径Ｄ０よりも外径Ｄ１が小さい軸部１２に固定した例である。
このようにすると、図２（ａ）に示すように、バネの巻き締まり状態では軸部に巻き締まり方向の回転力は付加されていない。
図２（ｂ）のようにベルト類２０を引き出すと、軸部がｗ１の方向に回転し、渦巻きバネ１１は巻き広がる。
次に、ベルト類２０から手を離すと、巻き締まる方向の復元力ｆｗでベルト類が巻き戻される。
ベルト類２０の巻き取り終了時には、図２（ｃ）に示すように、軸部に左右の回転方向ｗ２に「アソビ」が生じているのでゆっくりと巻き取られる。
よって、ベルト類の巻き取り終了時にソフト感が必要とするかまたは渦巻きバネの巻き広がり初期から安定したトルクが必要かによって図１と図２との構造を選択使用することができる。 FIG. 2 shows another embodiment of the spring device according to the present invention.
In this case, an example in which fixed to the shaft portion 12 the outer diameter D 1 is smaller than the inner end inside diameter D 0 of the free state of the spiral spring shown in FIG.
In this way, as shown in FIG. 2A, no rotational force in the winding direction is applied to the shaft portion when the spring is tightened.
Pulling out belts 20 as shown in FIG. 2 (b), the shank is rotated in the direction of w 1, the spiral spring 11 spreads the winding.
Next, when the hand is released from the belts 20, the belts are rewound with the restoring force fw in the winding direction.
At the end of winding of the belts 20, as shown in FIG. 2 (c), the “asobi” is generated in the left and right rotational directions w 2 as shown in FIG.
Therefore, the structure shown in FIGS. 1 and 2 can be selectively used depending on whether a soft feeling is required at the end of winding of the belts or a stable torque is required from the beginning of the spiral spring.

本発明に係るバネ装置の例を示す。2 shows an example of a spring device according to the present invention. 他の実施例を示す。Another embodiment is shown. 渦巻きバネの自由状態の例を示す。The example of the free state of a spiral spring is shown. 従来のバネ装置の例を示す。The example of the conventional spring apparatus is shown.

符号の説明Explanation of symbols

１０ バネ装置
１１ 渦巻きバネ
１２ 軸部
１３ ケース
２０ ベルト類 DESCRIPTION OF SYMBOLS 10 Spring apparatus 11 Spiral spring 12 Shaft part 13 Case 20 Belts

Claims (2)

渦巻きバネと、軸部と、渦巻きバネを内装したケースとを備え、
渦巻きバネは、巻き締まり力を付与してあり、
渦巻きバネの内側端部は、自由状態の巻き締まり内径よりも大きい外径の軸部を挿入固定してあり、
渦巻きバネの外側端部は、ケースに固定してあることを特徴とするバネ装置。 A spiral spring, a shaft, and a case with a spiral spring are provided,
The spiral spring has been given a tightening force,
The inner end portion of the spiral spring is inserted and fixed with a shaft portion having an outer diameter larger than the inner diameter of the tightening in a free state,
A spring device characterized in that the outer end of the spiral spring is fixed to the case. 渦巻きバネと、軸部と、渦巻きバネを内装したケースとを備え、
渦巻きバネは、巻き締まり力を付与してあり、
渦巻きバネの内側端部は、自由状態の巻き締まり内径よりも小さい外径の軸部に固定してあり、
渦巻きバネの外側端部は、ケースに固定してあることを特徴とするバネ装置。 A spiral spring, a shaft, and a case with a spiral spring are provided,
The spiral spring has been given a tightening force,
The inner end of the spiral spring is fixed to a shaft portion having an outer diameter smaller than the inner diameter of the tightening in a free state,
A spring device characterized in that the outer end of the spiral spring is fixed to the case.
JP2005326712A 2005-09-01 2005-11-10 Spring device using the tightening force Active JP4610472B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009048109A1 (en) * 2007-10-09 2009-04-16 Ts Tech Co., Ltd. Stowable vehicle seat
JP2016028196A (en) * 2014-07-09 2016-02-25 東洋ゼンマイ株式会社 Multiple contact type spring device, and multiple contact type spring

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965869U (en) * 1972-09-22 1974-06-08
JPS5138138U (en) * 1974-09-12 1976-03-22
JPS55119901U (en) * 1979-02-17 1980-08-25
JPS63180737A (en) * 1987-01-19 1988-07-25 Chuo Spring Co Ltd Contact type spiral spring
JPH01116328A (en) * 1987-10-29 1989-05-09 Daido Steel Co Ltd S-shaped spiral spring
JPH0496633U (en) * 1991-01-31 1992-08-21
JPH09257069A (en) * 1996-03-21 1997-09-30 Nikkiso Co Ltd Spiral spring

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4965869U (en) * 1972-09-22 1974-06-08
JPS5138138U (en) * 1974-09-12 1976-03-22
JPS55119901U (en) * 1979-02-17 1980-08-25
JPS63180737A (en) * 1987-01-19 1988-07-25 Chuo Spring Co Ltd Contact type spiral spring
JPH01116328A (en) * 1987-10-29 1989-05-09 Daido Steel Co Ltd S-shaped spiral spring
JPH0496633U (en) * 1991-01-31 1992-08-21
JPH09257069A (en) * 1996-03-21 1997-09-30 Nikkiso Co Ltd Spiral spring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009048109A1 (en) * 2007-10-09 2009-04-16 Ts Tech Co., Ltd. Stowable vehicle seat
JP2016028196A (en) * 2014-07-09 2016-02-25 東洋ゼンマイ株式会社 Multiple contact type spring device, and multiple contact type spring

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