JP2018086895A - Vertically movable bicycle crank - Google Patents

Vertically movable bicycle crank Download PDF

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JP2018086895A
JP2018086895A JP2016230374A JP2016230374A JP2018086895A JP 2018086895 A JP2018086895 A JP 2018086895A JP 2016230374 A JP2016230374 A JP 2016230374A JP 2016230374 A JP2016230374 A JP 2016230374A JP 2018086895 A JP2018086895 A JP 2018086895A
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opening
hydraulic damper
crank
compression hydraulic
attached
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JP6151842B1 (en
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さち子 斉藤
Sachiko Saito
サチ子 斉藤
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Abstract

PROBLEM TO BE SOLVED: To solve the problem that conventionally a vertically movable bicycle crank is not available.SOLUTION: It is possible to provide a vertically movable bicycle crank 1 which is constituted such that a member 3C can be moved vertically on the inner side of a member 3B by the action of a compressed hydraulic damper 5 when a certain weight or more is applied to pedals 15, 15A while travelling by a bicycle in which pedal shafts 11, 11A are attached to openings 5B formed on right and left of a lower part of the member 3C, where the compressed hydraulic damper 5 is provided, on the inner side of the crank 1 where the member 3C is provided on the inner side of the member 3B.SELECTED DRAWING: Figure 13

Description

本発名は、上下移動可能な自転車用クランクに関する。 This name relates to a bicycle crank that can move up and down.

従来は、上下移動可能な自転車用クランクはなかった。 Previously, there was no bicycle crank that could move up and down.

従来の自転車のクランクの場合は、膝への負担を軽減するには、サドルの位置を上部方向に上げる手段しかなかった。 In the case of a conventional bicycle crank, the only way to reduce the burden on the knee was to raise the saddle position upward.

その結果の効果として、一時停止時及び停車時、足先又は足裏が地面に着くことにより安全性が確保可能と成る。 As a result of this, safety can be ensured when the toes or soles touch the ground at the time of temporary stop and stop.

上記に述べたように、本発明は、従来の自転車用クランクと異なり、自転車走行中踏み出すペダルの位置が下がることにより、従来通りのサドルの位置であっても膝への負担を軽くすると共に、一時停止時及び停車時、足先又は足裏が地面に着くことにより安全性が確保可能な解決手段として、上下移動可能な自転車用クランクを用いることにより問題を解決しようとするものである。 As described above, the present invention, unlike the conventional bicycle crank, reduces the burden on the knee even at the conventional saddle position by lowering the position of the pedal that is stepped on during bicycle travel, At the time of temporary stop and stop, an attempt is made to solve the problem by using a bicycle crank that can move up and down as a solution that can ensure safety when the toes or soles touch the ground.

上記問題点を解決するために、本発明の上下動可能な自転車用クランクに付いて説明する。 In order to solve the above-mentioned problems, the bicycle crank according to the present invention that can move up and down will be described.

部材３及び部材３Ａより構成されている部材３Ｂと、部材３Ｃとを有し、そして、前記部材３Ｂの内側に前記部材３Ｃを設けられており、前記部材３Ｃが前記部材３Ｂの内側を上下移動可能に構成された一対の自転車用クランク１において、前記部材３Ｃは、内側に空間部８を設けた長方形状に形成されており、下部にペダル１５を取付けたべダル軸１１取付け用の開口部５Ｂと、さらに、前記長方形状の上部表裏両側面に、挿入板１４を挿入する開口部５Ｄとを有しており、また、前記部材３Ｂは、前記部材３及び前記部材３Ａより構成されており、前記部材３Ｂの長手方向垂直断面は長方形状であり、そして、前記部材３の長手方向垂直断面の形状はコの字状に設けられている。 The member 3B includes the member 3 and the member 3A, and the member 3C. The member 3C is provided inside the member 3B, and the member 3C moves up and down inside the member 3B. In the pair of bicycle cranks 1 that can be configured, the member 3C is formed in a rectangular shape having a space 8 inside, and an opening 5B for attaching a pedal shaft 11 having a pedal 15 attached to the lower part. And further, an opening 5D for inserting the insertion plate 14 is formed on both sides of the upper and lower surfaces of the rectangular shape, and the member 3B is composed of the member 3 and the member 3A. The member 3B has a rectangular vertical cross section in the longitudinal direction, and the member 3B has a U-shaped vertical cross section.

また、前記コの字状の内側には、圧縮油圧ダンパー２を、上下移動可能に設けることができる長方形状の開口部５Ｃを設けられている装着部６を、前記部材３の内側に一体化して設けられており、さらに、前記部材３の上部には、前記クランク軸４取付け用の開口部５と、前記コの字状の左右両先端部には、前記部材３Ａの左右両側面に凸部１０を設けたガイド９挿入用の凹部１４を設けたガイド講１２とを有しており、そして、前記部材３の内側に一体化して設けられている前記圧縮油圧ダンパー２装着する前記装着部６の前記開口部５Ｃに、前記圧縮油圧ダンパー２を上下移動可能に装着されており、そして、前記部材３の下部より、前記部材３に一体化して設けられている前記圧縮油圧ダンパー２を装着されている装着部６を、前記部材３Ｃに設けられている前記空間部８の内側に挿入して設けられており、さらに、前記圧縮油圧ダンパー２の上部の上になるよう、前記部材３Ｃの上部表裏両側面に設けられている開口部５Ｄに、挿入板１４挿を挿入して取付けられており、そして、前記部材３の前記開口部５の上部より、前記部材３Ａの前記ガイド９を、前記部材３のガイド講１２に挿入して設けられており、そして、また、前記部材３Ｃの下部に設けられている前記開口部５Ｂに、前記ペダル１５を取付けた前記ペダル軸１１を取付けたことを特徴とする上下移動可能な自転車用クランクである。 A mounting portion 6 provided with a rectangular opening 5C in which the compression hydraulic damper 2 can be moved up and down is integrated inside the member 3 inside the U-shape. Further, the upper part of the member 3 is provided with an opening 5 for attaching the crankshaft 4 and the left and right ends of the U-shape are protruded on both left and right sides of the member 3A. And a guide course 12 provided with a recess 14 for inserting a guide 9 provided with a portion 10, and the mounting portion for mounting the compression hydraulic damper 2 provided integrally with the inside of the member 3. The compression hydraulic damper 2 is attached to the opening 5C of the cylinder 6 so as to be movable up and down, and the compression hydraulic damper 2 provided integrally with the member 3 is attached from the lower part of the member 3. The mounting part 6 is connected to the part An opening provided on both sides of the upper and lower surfaces of the member 3C so as to be inserted above the space 8 provided in 3C and further above the upper portion of the compression hydraulic damper 2. The insertion plate 14 is inserted into the part 5D, and the guide 9 of the member 3A is inserted into the guide course 12 of the member 3 from above the opening 5 of the member 3. And a vertically movable bicycle, wherein the pedal shaft 11 to which the pedal 15 is attached is attached to the opening 5B provided at the lower portion of the member 3C. It is a crank.

前記上下移動可能なクランク１は、前記部材３Ｂの前記開口部５及び５Ａを、クランク軸７に取付けて、そして、前記部材３Ｃの下部の開口部５Ｂにペダル１５を取付けたべダル軸１１及び１１Ａを取付けられており、自転車走行時において、前記クランク１の左右に取付けられている前記ペダル１５及び１５Ａに一定以上の圧力が加わった時、前記部材３Ｂの内側に設けられている前記部材３Ｃが、前記圧縮油圧ダンパー２の作用により上下移動することを特徴とする上下移動可能な自転車用クランクである。 In the vertically movable crank 1, the opening portions 5 and 5A of the member 3B are attached to the crankshaft 7, and the pedal shafts 11 and 11A are attached to the opening portion 5B of the lower portion of the member 3C. The member 3C provided on the inner side of the member 3B when a pressure exceeding a certain level is applied to the pedals 15 and 15A attached to the left and right of the crank 1 during cycling. A bicycle crank that can be moved up and down by the action of the compression hydraulic damper 2.

前記記載の一対の上下動可能なクラン１において圧縮油圧ダンパー２に、トラブル発生した場合には、前記クランク１を、クランク軸４より取外し、そして、前記部材３の上部開口部５より挿入されていた前記部材３Ａを取外し、さらに、前記部材３Ｂに挿入されていた前記部材３Ｃの上部の挿入板９を取外すことにより、前記圧縮油圧ダンパー２を交換可能に構成されている上下移動可能な自転車用クランクである。 When trouble occurs in the compression hydraulic damper 2 in the pair of vertically movable clans 1 described above, the crank 1 is removed from the crankshaft 4 and inserted through the upper opening 5 of the member 3. For the bicycle that can move up and down, the compression hydraulic damper 2 is configured to be replaceable by removing the member 3A and then removing the insertion plate 9 at the top of the member 3C inserted into the member 3B. It is a crank.

上記記載の上下移動可能な自転車用クランクを用いることによる効果に関して述べると、従来のサドルの位置で有っても、自転車走行時踏み出すペダルの位置が、従来よりも下がっていることにより膝の曲がる角度が大きくなり、負担が軽減される。 The effect of using the above-described vertically movable bicycle crank will be described. Even if it is in the position of the conventional saddle, the knee bends because the position of the pedal that is stepped on when riding the bicycle is lower than the conventional position. The angle increases and the burden is reduced.

一例として、人により勿論身長に対する足の長さの比率は当然異なるが、身長１７０センチ前後の人の平均値での場合を前提条件として、走行時サドルの位置を、サドルの低位置より約１５センチ前後上部に固定して使用する場合の、一時停止及び停車時において、左右の一方又は双方の足先が地面に着く状態の場合を前提条件として下記に述べている。 As an example, of course, the ratio of the foot length to the height is naturally different depending on the person, but on the precondition that the average value of a person with a height of around 170 centimeters is assumed, the position of the saddle during running is about 15 from the low position of the saddle. The following description is based on the precondition that one or both of the left and right feet are on the ground at the time of temporary stop and stop when fixed to the upper part of the centimeter.

通常の位置で使用した場合であっても最大で５センチ以上、踏み出すペダルの位置が、底部の位置にあることにより膝への負担が軽減られ、しかも、一時停止時及び停車時双方の足裏が地面に着くことにより、未舗装の悪路や、雨の日、強雨の場合等々の安全である。 Even when used in a normal position, the pedal position to be stepped on is at least 5 cm at the bottom, reducing the burden on the knee, and the soles for both pause and stop By reaching the ground, it is safe on unpaved rough roads, rainy days, heavy rains, and so on.

また、本発明のクランクには、一本だけ圧縮油圧ダンバーを設けているが、数を限定するものではない。 Further, the crank of the present invention is provided with only one compression hydraulic damper, but the number is not limited.

そして、部材３Ｂ及び部材３Ｅより一対に構成されているクランクの長手方向の左右両側面より、挿入ピンを挿入して圧縮油圧ダンパーを取り付けているが、前記クランク１の長手方向両表面に、前記挿入ピンで前記圧縮油圧ダンパーを同様に取り付ける機構とすることも可能であり限定するものではない。 And, from both left and right side surfaces in the longitudinal direction of the crank constituted by a pair of members 3B and 3E, insertion hydraulic pins are attached by inserting insertion pins. A mechanism for attaching the compression hydraulic damper in the same manner with an insertion pin is also possible and is not limited.

また、使用圧縮油圧ダンパーにトラブルが発性した場合でも、関単に取り替えることが可能な、上下移動可能な自転車用クランクである。 In addition, the bicycle crank can be moved up and down, and can be easily replaced even when trouble occurs in the compression hydraulic damper used.

現在使用中の自転車のサドルの位置を変更しない場合でも、走行時踏み出すペダルの位置が従来よりも低部で有ることにより膝への負担が軽減可能となる。 Even when the position of the saddle of the bicycle currently in use is not changed, the burden on the knee can be reduced because the position of the pedal that is stepped on during traveling is lower than in the past.

また、特に子供を乗せている場合は、一時停止及び停止時の安全上確実に片方又は両方の足先又は足裏が地面に着くことが好ましいく、本上下移動可能な自転車用クランクにおいては可能と成る。 Also, especially when a child is on board, it is preferable that one or both feet or soles touch the ground for safety during suspension and stopping, and this is possible with a bicycle crank that can move vertically. It becomes.

上記記載の通り、膝への負担を軽くすると共に、安全性も向上する上下移動可能な自転車用クランクである。 As described above, the bicycle crank can be moved up and down to reduce the burden on the knee and improve safety.

以下本発明の上下動可能な自転車用クランクの実施例に付いて、図１から図１１３に基づいて説明する。 Hereinafter, an embodiment of a vertically movable bicycle crank according to the present invention will be described with reference to FIGS.

図１は、部材３及び３Ａより構成されている部材３Ｂの内側に部材３Ｃを挿入して構成されているクランク１の正面図であり、５は、部材３Ｂをクランク軸７に取り付ける前記部材３の開口部であり、また、４Ｂは、前記部材３Ｃのペダル軸１１取付け用の開口部５Ｂであり、Ａ−Ａ’は、図２の側面図の方向を示している。 FIG. 1 is a front view of a crank 1 configured by inserting a member 3C inside a member 3B composed of members 3 and 3A, and 5 is the member 3 for attaching the member 3B to the crankshaft 7. 4B is an opening 5B for attaching the pedal shaft 11 of the member 3C, and AA 'indicates the direction of the side view of FIG.

図２は、図１の部材３及び３Ａより構成されている前記部材３Ｂの内側に、前記部材３Ｃの下部にペダル軸１１を取付ける開口部５Ｂ設けた前記部材３Ｃを、前記部材３Ｂに挿入した状態を示す図１のクランクのＡ−Ａ’方向を示す側面図であり、５及び５Ａは、前記部材３Ｂのクランク軸７取付け用の開口部を示している。 2 shows that the member 3C provided with an opening 5B for attaching the pedal shaft 11 to the lower part of the member 3C is inserted into the member 3B inside the member 3B constituted by the members 3 and 3A of FIG. It is a side view which shows the AA 'direction of the crank of FIG. 1 which shows a state, 5 and 5A have shown the opening part for the crankshaft 7 attachment of the said member 3B.

図３は、図２のＢ−Ｂ‘方向の部材３の上部にクランク軸７取付け用の開口部５と、図１１のＤ−Ｄ’方向、長手方向垂直断面を、図１２に示すコの字状に設けた状態を示す部材３の内側の平面図である。そして、前記部材３の内側に圧縮張油圧ダンバー２取付け用の装着部６の開口部５Ｃ長方形に設けており、さらに、左右二カ所両先端部に、図４の前記部材３Ａの左右両先端部のガイド９用凸部
１０を、前記部材３の開口部５上部より前記部材３Ａの凸１０を挿入用のガイド講１２用の凹部１３を設けられている。 3 shows an opening 5 for attaching the crankshaft 7 to the upper part of the member 3 in the BB ′ direction in FIG. 2 and a DD ′ direction in FIG. It is a top view inside the member 3 which shows the state provided in the character shape. And the opening 5C rectangle of the mounting part 6 for attaching the compression tension hydraulic damper 2 to the inside of the member 3 is provided, and further, the left and right ends of the member 3A of FIG. The projection 9 for the guide 9 is provided with a recess 13 for the guide course 12 for inserting the projection 10 of the member 3A from above the opening 5 of the member 3.

図４は、図２の前記部材３Ａの上部にクランク軸７取り付ける開口部５Ａと、図３の前記部材３の左右二カ所先端部設けられているガイド講１２用の凹部１３挿入用に挿入するガイド９用の凸部１０を、左右二カ所先端部に設けているＣ−Ｃ’方向を示す平面図である。 4 is inserted into the opening 5A for attaching the crankshaft 7 to the upper part of the member 3A in FIG. 2, and the recess 13 for the guide course 12 provided at the two left and right ends of the member 3 in FIG. It is a top view which shows CC 'direction which has provided the convex part 10 for guides 9 in two right-and-left front-end | tip parts.

図５は、図７に示されている前記部材３の下部方向より挿入して、部材３Ｂの内側に設けられる前記部材３Ｃを示す正面図であり、そして、前記部材３Ｃの下部には、ペダル１５を取付けたぺダル軸１１を取付ける前記開口部５Ｂと、前記部材３の内側に設けられている前記圧縮油圧ダンパー２を装着した装着部６を内側に挿入して設けられる空間部８を設けており、さらに、前記長方形の装着部６に前記圧縮油圧ダンパー２を装着した、前記圧縮油圧ダンパー２の上部の上に前記挿入板１４を設けて、前記部材３Ｃのペダル１５に一定以上の圧力が加わった時、部材３Ｂの内側で、部材３Ｃと同時に上下移動可能に成るよう、前記部材３Ｃの開口部５Ｄに挿入板９を挿入する開口部５Ｃを有している前記部材３Ｃの正面図である。 FIG. 5 is a front view showing the member 3C which is inserted from the lower direction of the member 3 shown in FIG. 7 and is provided inside the member 3B. The opening 5B for attaching the pedal shaft 11 to which the 15 is attached and the space 8 provided by inserting the mounting portion 6 with the compression hydraulic damper 2 provided inside the member 3 into the inside are provided. Furthermore, the insertion plate 14 is provided on the upper part of the compression hydraulic damper 2 in which the compression hydraulic damper 2 is mounted on the rectangular mounting portion 6, and a pressure of a certain level or more is applied to the pedal 15 of the member 3C. Is a front view of the member 3C having an opening 5C for inserting the insertion plate 9 into the opening 5D of the member 3C so that it can move up and down simultaneously with the member 3C inside the member 3B. It is.

図６は、図３に示されている前記部材３に前記圧縮油圧ダンパー２を装着する装着部６を、前記部材と一体化して設けている装着部６の内側開口部５Ｃに、前記圧縮油圧ダンパー２を装着した状態を示している平面図であり、５はクランク７取り付け用の開口部であり、そして、１２及び１３は、図１２に示されている部材３の断面図の左右二カ所先端部に設けられているガイド講１２及びガイド講１２の凹部１３である。 FIG. 6 shows the compression hydraulic pressure in the inner opening 5C of the mounting portion 6 in which the mounting portion 6 for mounting the compression hydraulic damper 2 to the member 3 shown in FIG. FIG. 5 is a plan view showing a state in which the damper 2 is mounted, 5 is an opening for attaching the crank 7, and 12 and 13 are two left and right portions of the sectional view of the member 3 shown in FIG. 12. They are a guide course 12 provided at the tip and a recess 13 of the guide course 12.

図７は、図６の前記部材３に前記圧縮油圧ダンパー２を装着部６の開口部５Ｃに装着した前記部材３に、前記部材３の下部より、図５に示されている前記部材３Ａを挿入して設けられる挿入状態を示している平面図であり、１は、クランク、５は前記３をクランク軸７に取付ける開口部であり、５Ｂは、前記部材３Ａのペダル１５を取付けたべダル軸１１を取り付け用の開口部であり、１２及び１３は、前記部材３の左右二カ所上部に設けた前記部材３Ａのガイド９用の凸部１０挿入用のガイド講１２の凹部１３であり、そして、８は、前記部材３Ｃの空間部であり５Ｃは、前記部材３の内側に装着する長方形の装着部６の開口部である。 7 shows that the member 3A shown in FIG. 5 is attached to the member 3 in which the compression hydraulic damper 2 is attached to the member 3 of FIG. FIG. 5 is a plan view showing an insertion state provided by insertion, wherein 1 is a crank, 5 is an opening for attaching 3 to the crankshaft 7, and 5B is a pedal shaft to which the pedal 15 of the member 3A is attached. 11 is an opening for attachment, and 12 and 13 are concave portions 13 of a guide course 12 for inserting the convex portion 10 for the guide 9 of the member 3A provided at the upper left and right portions of the member 3, and , 8 is a space portion of the member 3C, and 5C is an opening portion of a rectangular mounting portion 6 to be mounted inside the member 3.

図８は、図７に示されている部材３の内側に挿入して設けられる部材３Ｃを挿入した状態を示す平面図であり、５は、部材３をクランク７取付け用の開口部であり、また、５Ｂは、前記部材３Ｃの下部にペダル１５を取付けたぺダル軸１１取付け用の開口部であり、そして、５Ｄは、図７に示されている前記圧縮油圧ダンパー上部の上に挿入板９を挿入する開口部５Ｄである。 FIG. 8 is a plan view showing a state in which a member 3C provided by being inserted inside the member 3 shown in FIG. 7 is inserted, 5 is an opening for attaching the member 3 to the crank 7, 5B is an opening for attaching the pedal shaft 11 with the pedal 15 attached to the lower part of the member 3C, and 5D is an insertion plate on the upper part of the compression hydraulic damper shown in FIG. 9 is an opening 5D into which 9 is inserted.

図９は、図５、図７及び図８に示されている前記部材３Ａの上部の表裏両側面に設けられている開口部５Ｄに挿入する挿入板１４の拡大斜視図である。 FIG. 9 is an enlarged perspective view of the insertion plate 14 to be inserted into the opening 5D provided on both front and back side surfaces of the upper part of the member 3A shown in FIGS.

図１０は、図８の前記部材３の内側に前記部材３Ｃを下部より挿入されて前記部材３の上部開口５より、図４に示されている部材３Ａの左右両側面尉に設けられている凸部１０を設けられているガイド９を、前記部材３のコの字状の左右先端部の二カ所に設けられている凹部１３を設けられている１１のガイド講１２に前記上部開口部５より挿入する状態を示している平面図であり、そして、５Ａは、前記部材３Ａのクランク軸７取付け用の前記開口部であり、５Ｂは、ペダル１５を取付けたべダル軸１１取り付ける前記開口部である。 10, the member 3C is inserted into the inside of the member 3 of FIG. 8 from the lower part, and is provided on the left and right side surfaces of the member 3A shown in FIG. 4 from the upper opening 5 of the member 3. The upper opening 5 is provided with the guide 9 provided with the convex portion 10 and the 11 guide courses 12 provided with the concave portions 13 provided at two positions of the U-shaped left and right end portions of the member 3. 5A is a plan view showing a state of further insertion, 5A is the opening for attaching the crankshaft 7 of the member 3A, and 5B is the opening for attaching the pedal shaft 11 to which the pedal 15 is attached. is there.

図１１は、図２の前記部材３の内側に挿入して設けられている前記部材３Ｃ下部に、前記ペダル１５を取付けた前記ペダル軸１１を前記開口部５Ｂに取付けて、自転車走行時ペダル１５に一定以上の圧力が加わった時、前記部材３Ｂの内側に挿入して設けられている前記部材３Ｃが、前記圧縮油圧ダンパー２の作用により下部方向に移動した状態を示している前記クランク１の側面図であり５及び５Ａは、クランク軸７取付け用の開口部である。 FIG. 11 shows a pedal 15 when riding a bicycle by attaching the pedal shaft 11 with the pedal 15 attached to the opening 5B below the member 3C provided to be inserted inside the member 3 in FIG. When a pressure exceeding a certain level is applied to the crank 1, the member 3 C inserted and provided inside the member 3 B is moved downward by the action of the compression hydraulic damper 2. 5 and 5A are side views, which are openings for attaching the crankshaft 7. FIG.

図１２は、図１１のＤ−Ｄ’方向を示す拡大断面図であり、３は、前記コの字状左右両側面先端部に前記部材３Ａのガイドを挿入する凹部１３を設けられているガイド講１２を示す断面図であり、３Ｃは、空間部８を設けられている前記部材であり、１４は前記挿入板であり、そして、破線部分は、挿入板１４の下部の前記圧縮油圧ダンパーを示しており、５Ｃは、前記部材３に一体化して設けられている長方形の前記圧縮油圧ダンパー２装着部６の前記開口部である。 FIG. 12 is an enlarged cross-sectional view showing the direction DD ′ of FIG. 3C is a cross-sectional view showing the lecture 12, 3C is the member provided with the space portion 8, 14 is the insertion plate, and the broken line portion is the compression hydraulic damper below the insertion plate 14. 5C is the opening of the rectangular compression hydraulic damper 2 mounting portion 6 provided integrally with the member 3.

図１３は、自転車の左右のクランク軸７及び７Ａに、図１１に示されているクランク１を取付けて、ペダル１５及び１５Ａに一定以上の圧力が加わった時、前記部材３Ｂの内側に挿入されて設けられている前記部材３Ｃが前記圧縮油圧ダンパー２の作用により、前記部材３Ｃが上下移動する状態を示している正面図である。 FIG. 13 shows that the crank 1 shown in FIG. 11 is attached to the left and right crankshafts 7 and 7A of the bicycle, and when a certain pressure is applied to the pedals 15 and 15A, the bicycle is inserted into the member 3B. 3C is a front view showing a state in which the member 3C is moved up and down by the action of the compression hydraulic damper 2. FIG.

従来のクランクと異なり、新しいタイプのクランクを用いた自転車の開発が可能と成る上下移動可能な自転車用クランクである。 Unlike conventional cranks, this is a vertically movable bicycle crank that enables the development of bicycles using a new type of crank.

クランク１の正面図である。1 is a front view of a crank 1. FIG. 図１のクランク１のＡ−Ａ’方向を示す側面図。The side view which shows the A-A 'direction of the crank 1 of FIG. 図２の部材３ＡのＢ−Ｂ’方向を示す平面図。The top view which shows the B-B 'direction of the member 3A of FIG. 図２の部材３のＣ−Ｃ’方向を示す平面図。The top view which shows the C-C 'direction of the member 3 of FIG. 部材３Ｂの内側に設ける部材３Ｃを示す正面図。The front view which shows the member 3C provided inside the member 3B. 図３の内側の圧縮油圧ダンパー２を示す正面図。The front view which shows the compression hydraulic damper 2 inside FIG. 図６の下部より部材３Ｃを挿入する正面図。The front view which inserts member 3C from the lower part of FIG. 図７の挿入状態を完了したクランク１の正面図。The front view of the crank 1 which completed the insertion state of FIG. 図８の開口部４Ｃに挿入する挿入板の斜視図。The perspective view of the insertion board inserted in the opening part 4C of FIG. 図８の正面図に部材３Ａの挿入状態を示す正面図。The front view which shows the insertion state of member 3A in the front view of FIG. ペダル６が、下部に移動した状態を示す側面図。The side view which shows the state which the pedal 6 moved to the lower part. 図１１のＤ−Ｄ’方向を示す断面図。Sectional drawing which shows the D-D 'direction of FIG. ペダル１２及び１２Ａの、ぺダル１２移動を示す正面図。The front view which shows the pedal 12 movement of the pedals 12 and 12A.

クランク １
圧縮油圧ダンパー ２
部材 ３、３Ａ、３Ｂ、３Ｃ
クランク軸 ４
開口部 ５、５Ａ，５Ｂ，５Ｃ、５Ｄ
装着部 ６
クランク軸 ７
空間部 ８
ガイド ９
凸部 １０
ペダル軸 １１、１１Ａ
ガイド講 １２
凹部 １３
挿入板 １４
ペダル １５、１５Ａ
方向 Ａ−Ａ‘，Ｂ−Ｂ’Ｃ−Ｃ‘Ｄ−Ｄ’ Crank 1
Compression hydraulic damper 2
Member 3, 3A, 3B, 3C
Crankshaft 4
Opening 5, 5A, 5B, 5C, 5D
Mounting part 6
Crankshaft 7
Space 8
Guide 9
Convex part 10
Pedal shaft 11, 11A
Guide course 12
Recess 13
Insertion plate 14
Pedal 15, 15A
Direction AA ', BB'C-C'D-D'

Claims (3)

部材３及び部材３Ａより構成されている部材３Ｂと、部材３Ｃとを有し、そして、前記部材３Ｂの内側に前記部材３Ｃを設けられており、前記部材３Ｃが前記部材３Ｂの内側を上下移動可能に構成された一対の自転車用クランク１において、前記部材３Ｃは、内側に空間部８を設けた長方形状に形成されており、下部にペダル１５を取付けたべダル軸１１取付け用の開口部５Ｂと、さらに、前記長方形状の上部表裏両側面に、挿入板１４を挿入する開口部５Ｄとを有しており、また、前記部材３Ｂは、前記部材３及び前記部材３Ａより構成されており、前記部材３Ｂの長手方向垂直断面は長方形状であり、そして、前記部材３の長手方向垂直断面の形状はコの字状に設けられており、また、前記コの字状の内側には、圧縮油圧ダンパー２を、上下移動可能に設けることができる長方形状の開口部５Ｃを設けられている装着部６を、前記部材３の内側に一体化して設けられており、さらに、前記部材３の上部には、前記クランク軸４取付け用の開口部５と、前記コの字状の左右両先端部には、前記部材３Ａの左右両側面に凸部１０を設けたガイド９挿入用の凹部１４を設けたガイド講１２とを有しており、そして、前記部材３の内側に一体化して設けられている前記圧縮油圧ダンパー２装着する前記装着部６の前記開口部５Ｃに、前記圧縮油圧ダンパー２を上下移動可能に装着されており、そして、前記部材３の下部より、前記部材３に一体化して設けられている前記圧縮油圧ダンパー２を装着されている装着部６を、前記部材３Ｃに設けられている前記空間部８の内側に挿入して設けられており、さらに、前記圧縮油圧ダンパー２の上部の上になるよう、前記部材３Ｃの上部表裏両側面に設けられている開口部５Ｄに、挿入板１４挿を挿入して取付けられており、そして、前記部材３の前記開口部５の上部より、前記部材３Ａの前記ガイド９を、前記部材３のガイド講１２に挿入して設けられており、そして、また、前記部材３Ｃの下部に設けられている前記開口部５Ｂに、前記ペダル１５を取付けた前記ペダル軸１１を取付けたことを特徴とする上下移動可能な自転車用クランク。 The member 3B includes the member 3 and the member 3A, and the member 3C. The member 3C is provided inside the member 3B, and the member 3C moves up and down inside the member 3B. In the pair of bicycle cranks 1 that can be configured, the member 3C is formed in a rectangular shape having a space 8 inside, and an opening 5B for attaching a pedal shaft 11 having a pedal 15 attached to the lower part. And further, an opening 5D for inserting the insertion plate 14 is formed on both sides of the upper and lower surfaces of the rectangular shape, and the member 3B is composed of the member 3 and the member 3A. The member 3B has a rectangular vertical cross section in the longitudinal direction, and the member 3B has a U-shaped vertical cross section. The inside of the U-shaped portion is compressed. Hydraulic damper 2 A mounting portion 6 provided with a rectangular opening 5C that can be moved downward is provided integrally with the inside of the member 3. A guide course 12 provided with a recess 9 for inserting a guide 9 provided with a convex portion 10 on both left and right side surfaces of the member 3A at both the left and right ends of the U-shaped opening 5 for mounting the shaft 4. And the compression hydraulic damper 2 can be moved up and down in the opening 5C of the mounting portion 6 to which the compression hydraulic damper 2 is integrally provided inside the member 3. The space provided in the member 3C is provided with a mounting portion 6 mounted with the compression hydraulic damper 2 provided integrally with the member 3 from the lower portion of the member 3. Insert it inside the part 8 Furthermore, the insertion plate 14 is inserted into the openings 5D provided on both the upper and lower sides of the member 3C so as to be above the upper portion of the compression hydraulic damper 2, The guide 9 of the member 3A is inserted into the guide course 12 of the member 3 from the upper part of the opening 5 of the member 3, and is provided at the lower part of the member 3C. A bicycle crank capable of moving up and down, wherein the pedal shaft 11 having the pedal 15 attached is attached to the opening 5B. 前記上下移動可能なクランク１は、前記部材３Ｂの前記開口部５及び５Ａを、クランク軸７に取付けて、そして、前記部材３Ｃの下部の開口部５Ｂにペダル１５を取付けたべダル軸１１及び１１Ａを取付けられており、自転車走行時において、前記クランク１の左右に取付けられている前記ペダル１５及び１５Ａに一定以上の圧力が加わった時、前記部材３Ｂの内側に設けられている前記部材３Ｃが、前記圧縮油圧ダンパー２の作用により上下移動することを特徴とする請求項１記載の上下移動可能な自転車用クランク。 In the vertically movable crank 1, the opening portions 5 and 5A of the member 3B are attached to the crankshaft 7, and the pedal shafts 11 and 11A are attached to the opening portion 5B of the lower portion of the member 3C. The member 3C provided on the inner side of the member 3B when a pressure exceeding a certain level is applied to the pedals 15 and 15A attached to the left and right of the crank 1 during cycling. The vertically movable bicycle crank according to claim 1, wherein the bicycle crank moves up and down by the action of the compression hydraulic damper 2. 前記記載の一対の上下動可能なクラン１において圧縮油圧ダンパー２に、トラブル発生した場合には、前記クランク１を、クランク軸４より取外し、そして、前記部材３の上部開口部５より挿入されていた前記部材３Ａを取外し、さらに、前記部材３Ｂに挿入されていた前記部材３Ｃの上部の挿入板９を取外すことにより、前記圧縮油圧ダンパー２を交換可能に構成されている請求項１又は２記載の上下移動可能な自転車用クランク。 When trouble occurs in the compression hydraulic damper 2 in the pair of vertically movable clans 1 described above, the crank 1 is removed from the crankshaft 4 and inserted through the upper opening 5 of the member 3. 3. The compression hydraulic damper 2 is configured to be replaceable by removing the member 3A and further removing an insertion plate 9 on the member 3C which has been inserted into the member 3B. Bicycle crank that can move up and down.
JP2016230374A 2016-11-28 2016-11-28 Bicycle crank that can move up and down. Expired - Fee Related JP6151842B1 (en)

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JP2003312581A (en) * 2002-04-23 2003-11-06 San Life:Kk Bicycle provided with automatic elastic change type crank mechanism corresponding to drag
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