JP2009061829A - Rubber crawler and core therefor - Google Patents

Rubber crawler and core therefor Download PDF

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JP2009061829A
JP2009061829A JP2007229438A JP2007229438A JP2009061829A JP 2009061829 A JP2009061829 A JP 2009061829A JP 2007229438 A JP2007229438 A JP 2007229438A JP 2007229438 A JP2007229438 A JP 2007229438A JP 2009061829 A JP2009061829 A JP 2009061829A
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rubber crawler
rubber
corner
core
crawler
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JP5097482B2 (en
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Yasuo Shimozono
靖夫 下薗
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Bridgestone Corp
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Bridgestone Corp
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Priority to KR1020080086523A priority patent/KR101032213B1/en
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent degradation of the function of a track roller detachment preventive guide of a driving projection and degradation of the appearance quality of a rubber crawler, caused by the ride-over of the track roller on the driving projection. <P>SOLUTION: In a rubber crawler 1, a core 10 comprising a flat core body 11 and a corner part 12 erected on the core body 11 is embedded, and the corner part 12 of the core 10 is covered with a rubber material to form a driving projection 2. The rubber crawler satisfies an inequality LW≤LC, where LW denotes the dimension in the width direction of the rubber crawler 1 at a fore end of the corner part 12, and LC denotes the dimension in the circumferential direction of the rubber crawler 1 at the fore end of the corner part 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、車両の走行部に採用されるゴムクローラおよびその駆動突起に用いる芯金に関し、特には、駆動突起の損傷や走行中の騒音の発生を抑制できるゴムクローラ及び芯金に関するものである。   The present invention relates to a rubber crawler employed in a traveling portion of a vehicle and a core metal used for a driving protrusion thereof, and more particularly to a rubber crawler and a core metal capable of suppressing damage to a driving protrusion and generation of noise during traveling. .

路面の保護、騒音の抑制、更には環境保護などの観点から、近年、建設機械、農業機械などの車輌の走行部にゴムクローラが広く用いられるようになっている。このようなゴムクローラには、補強や形状保持等のため、内部に芯金をゴムクローラの周方向に所定ピッチで並べて埋設したものがあり、例えば特許文献１は、このように芯金を埋設したゴムクローラについて開示している。   In recent years, rubber crawlers have been widely used in traveling parts of vehicles such as construction machines and agricultural machines from the viewpoints of road surface protection, noise suppression, and environmental protection. Among such rubber crawlers, there is a rubber crawler in which a core metal is embedded and arranged at a predetermined pitch in the circumferential direction of the rubber crawler for reinforcement, shape maintenance, and the like. A rubber crawler is disclosed.

このゴムクローラに埋設される芯金は、ゴムクローラの幅方向に長尺とした平板状の芯金本体と、その芯金本体に立設した、各々ゴムクローラの幅方向に長尺とした一対の角部とを具えており、この角部の、ゴムクローラの周方向に向く面をゴム材で被覆して、ゴムクローラの内周面側に二股状の一対の駆動突起を周方向に所定ピッチで多数並べて形成してある。   The core metal embedded in the rubber crawler includes a flat core metal body elongated in the width direction of the rubber crawler, and a pair of elongate members extending in the width direction of the rubber crawler. The surface of the corner facing the circumferential direction of the rubber crawler is covered with a rubber material, and a pair of bifurcated drive protrusions are provided in the circumferential direction on the inner circumferential surface side of the rubber crawler. A large number are arranged side by side at a pitch.

このようなゴムクローラは、機体に設けられたスプロケットとアイドラとの間に掛け渡す際に、スプロケットの円盤部およびアイドラが二股状の駆動突起の間をそれぞれ通り、かつスプロケットとアイドラとの間で機体に設けられた複数の転輪が二股状の駆動突起の両外側をそれぞれ通るように配置する。そして機体の走行の際は、スプロケットが、その円盤部の両面の外周縁部にスプロケットの軸線方向へ向けて立設した駆動ピンを上記二股状の駆動突起に係合させることで駆動力をゴムクローラ側へ伝達し、駆動突起で案内されてゴムクローラに対し外れ止めされた複数の転輪が、ゴムクローラを支持して地面等の走行面に押し付ける。   When such a rubber crawler is hung between a sprocket and an idler provided on the fuselage, the sprocket disc and idler pass between the bifurcated drive projections, and between the sprocket and the idler. A plurality of wheels provided on the airframe are arranged so as to pass through both outer sides of the bifurcated drive protrusion. When the vehicle is traveling, the sprocket engages the bifurcated drive projections with the drive pins erected in the outer peripheral edge portions of the both sides of the disk portion in the axial direction of the sprocket. A plurality of rolling wheels that are transmitted to the crawler side and guided by the drive protrusions and prevented from coming off the rubber crawler support the rubber crawler and press it against a running surface such as the ground.

かかる構成の従来のゴムクローラでは、二股状の一対の駆動突起の各々をゴムクローラの幅方向に長尺に設定して、スプロケットの駆動ピンに対する駆動突起の接触面を広くしてあり、その駆動突起の接触面を、芯金を被覆するゴム材で形成しているので、スプロケットの駆動ピンによる駆動突起の破損や走行中の騒音の発生を抑制しつつ、芯金を介して効率的にゴムクローラに駆動力を伝達してゴムクローラを駆動することができる。   In the conventional rubber crawler having such a configuration, each of the pair of bifurcated drive projections is set to be long in the width direction of the rubber crawler, and the contact surface of the drive projection with respect to the drive pin of the sprocket is widened. Since the contact surface of the protrusion is made of a rubber material that covers the core metal, the rubber is efficiently passed through the core metal while suppressing damage to the drive protrusion caused by the drive pin of the sprocket and the generation of noise during traveling. A rubber crawler can be driven by transmitting a driving force to the crawler.

特開平１１−１９８８７１号公報JP-A-11-198871

ところで上記従来のゴムクローラは、駆動突起への転輪の乗り上げについては充分には考慮されていない。すなわち、特許文献１記載のゴムクローラは、スプロケットの駆動ピンが係合するゴムクローラの周方向においては、芯金の角部を厚いゴム材で被覆して駆動突起を形成していることから、厳しい走行条件等に起因して駆動突起への転輪の乗り上げが生じた場合にその角部を被覆するゴム材が大きく変形して欠落し易く、このゴム材の欠落が生ずると、駆動突起の転輪外れ防止ガイド機能が低下するのに加えてゴムクローラの外観品質も低下するので、この点について未だ改善の余地がある。   By the way, the conventional rubber crawler does not sufficiently consider the rolling of the wheel on the driving protrusion. That is, in the rubber crawler described in Patent Document 1, in the circumferential direction of the rubber crawler with which the drive pin of the sprocket is engaged, the corner of the core metal is covered with a thick rubber material to form the drive protrusion. When rolling wheels run on the drive protrusion due to severe driving conditions, etc., the rubber material covering the corners is easily deformed and easily lost, and if this rubber material is missing, In addition to the deterioration of the rolling slip prevention guide function, the appearance quality of the rubber crawler also deteriorates, so there is still room for improvement in this respect.

よって、本発明の目的は、例え駆動突起への転輪の乗り上げが生じても、駆動突起の転輪外れ防止ガイド機能の低下を防止し、かつ外観品質の低下も防止するゴムクローラおよび、そのゴムクローラの駆動突起に用いる芯金を提供することにある。   Accordingly, an object of the present invention is to provide a rubber crawler that prevents a decrease in the guide function of preventing the drive protrusion from falling off the roll and prevents a decrease in appearance quality even if the drive wheel rides on the drive protrusion. An object of the present invention is to provide a core bar used for a driving projection of a rubber crawler.

上記課題を有利に解決したこの発明のゴムクローラは、平板状の芯金本体と、その芯金本体に立設した角部とを具える芯金を埋設し、その芯金の角部をゴム材で被覆して駆動突起を形成してなるゴムクローラであって、前記角部の先端部の、前記ゴムクローラの幅方向の寸法をＬＷとするとともに、前記角部の先端部の、前記ゴムクローラの周方向の寸法をＬＣとして、ＬＷ≦ＬＣとしたことを特徴とするものである。   The rubber crawler according to the present invention that has advantageously solved the above-described problems embeds a cored bar having a flat cored bar body and corners standing on the cored bar body, and the corners of the cored bar are made of rubber. A rubber crawler formed by coating with a material to form a drive projection, wherein the width of the rubber crawler at the tip of the corner is LW, and the rubber at the tip of the corner The crawler circumferential dimension is LC, and LW ≦ LC.

また、上記課題を有利に解決したこの発明のゴムクローラ用芯金は、平板状の芯金本体と、その芯金本体に立設した角部とを具える、前記ゴムクローラ用の芯金であって、前記角部の先端部の、前記ゴムクローラの幅方向の寸法をＬＷとするとともに、前記角部の先端部の、前記ゴムクローラの周方向の寸法をＬＣとして、ＬＷ≦ＬＣとしたことを特徴とするものである。   The rubber crawler cored bar of the present invention that has advantageously solved the above-mentioned problems is a cored bar for a rubber crawler comprising a flat cored bar body and a corner portion standing on the cored bar body. The width of the rubber crawler at the tip of the corner is defined as LW, and the size of the tip of the corner at the circumferential direction of the rubber crawler is defined as LW ≦ LC. It is characterized by this.

この発明のゴムクローラによれば、芯金本体に立設した角部をゴム材で被覆して駆動突起を形成していることから、スプロケットの駆動ピンが駆動突起の、芯金の角部で支持したゴム材に接触して駆動力を伝達するので、スプロケットの駆動ピンによる駆動突起の破損や走行中の騒音の発生を抑制しつつ、芯金を介して効率的にゴムクローラに駆動力を伝達してゴムクローラを駆動することができる。   According to the rubber crawler of the present invention, the corners standing on the core metal body are covered with the rubber material to form the drive projections, so the drive pins of the sprocket are the corners of the core metal of the drive projections. Since the driving force is transmitted in contact with the supported rubber material, the driving force is efficiently applied to the rubber crawler via the metal core while suppressing the breakage of the driving protrusion by the driving pin of the sprocket and the generation of noise during traveling. The rubber crawler can be driven by transmission.

しかもこの発明のゴムクローラによれば、角部の先端部の、ゴムクローラの幅方向の寸法ＬＷとゴムクローラの周方向の寸法ＬＣとの関係をＬＷ≦ＬＣとして、ゴムクローラの周方向の角部先端部寸法ＬＣを、ゴムクローラの幅方向の角部先端部寸法ＬＷと等しいかそれより大きくしていることから、芯金の角部の先端部がゴムクローラの周方向に充分な厚みを持って、その角部を被覆するゴム材を充分強固に支持しているので、走行中に転輪が駆動突起の、芯金のその角部を被覆するゴム材に乗り上げてもゴム材が大きく変形することがないため、ゴム材の欠落も生じにくい。また、例えゴム材が欠落したとしても、さほど駆動突起と形状が変わらない角部先端部が直ぐに現れることになる。それゆえこの発明のゴムクローラによれば、例え駆動突起への転輪の乗り上げが生じても、駆動突起の転輪外れ防止ガイド機能の低下を防止するとともに、ゴムクローラの外観品質の低下も防止することができる。   In addition, according to the rubber crawler of the present invention, the relationship between the dimension LW in the width direction of the rubber crawler and the dimension LC in the circumferential direction of the rubber crawler is LW ≦ LC, and the corner in the circumferential direction of the rubber crawler. Since the tip end portion dimension LC is equal to or larger than the corner tip end portion dimension LW in the width direction of the rubber crawler, the tip end portion of the corner portion of the core metal has a sufficient thickness in the circumferential direction of the rubber crawler. Therefore, the rubber material covering the corners is sufficiently firmly supported, so that even if the wheel rides on the rubber material covering the corners of the core metal during driving, the rubber material is large. Since there is no deformation, the rubber material is not easily lost. Further, even if the rubber material is missing, the tip of the corner that does not change in shape from the drive protrusion appears immediately. Therefore, according to the rubber crawler of the present invention, even if the rolling wheel rides on the driving protrusion, the guide function of the driving protrusion is prevented from being deteriorated and the appearance quality of the rubber crawler is also prevented from being deteriorated. can do.

なお、この発明のゴムクローラにおいては、前記角部の先端部と前記芯金本体との間に、前記ゴムクローラの周方向へ向く括れ部を設けると好ましい。スプロケットの駆動ピンは駆動突起の、芯金の角部先端部と芯金本体との間の、ゴムクローラの周方向へ向く部分を被覆するゴム材に当接して駆動力を伝達するので、角部の先端部と芯金本体との間に、ゴムクローラの周方向へ向く括れ部を設ければ、その括れ部を被覆する、スプロケットの駆動ピンと当接するゴム材を、角部の先端部と芯金本体とで充分強固に支持することができ、これにより、スプロケットの駆動ピンによる駆動突起の破損や走行中の騒音の発生を確実に抑制することができる。   In the rubber crawler according to the present invention, it is preferable to provide a constricted portion that faces the circumferential direction of the rubber crawler between the tip of the corner and the core metal body. The drive pin of the sprocket contacts the rubber material that covers the portion of the drive protrusion between the corner tip of the core metal and the core metal body facing the circumferential direction of the rubber crawler to transmit the drive force. If a constricted portion facing the circumferential direction of the rubber crawler is provided between the tip portion of the portion and the core metal body, the rubber material that covers the constricted portion and that contacts the drive pin of the sprocket is connected to the tip portion of the corner portion. It can be supported sufficiently firmly by the core metal body, and thereby it is possible to reliably suppress the breakage of the drive projection by the drive pin of the sprocket and the generation of noise during traveling.

また、この発明のゴムクローラにおいては、前記角部の前記括れ部を被覆するゴム材の厚さを、前記角部の前記先端部を被覆するゴム材の厚さより大きくすると好ましい。角部の括れ部を被覆するゴム材の厚さを、角部の先端部を被覆するゴム材の厚さより大きくすれば、駆動突起を全体に先細りの形状に設計し得て、ゴム材の成型工程およびゴムクローラの加硫工程で金型からの駆動突起の抜き出しを容易ならしめることができるとともに、括れ部を被覆するゴム材の大きい厚さによって、スプロケットの駆動ピンによる駆動突起の破損や走行中の騒音の発生をより確実に抑制することができる。   In the rubber crawler according to the present invention, it is preferable that the thickness of the rubber material covering the constricted portion of the corner portion is larger than the thickness of the rubber material covering the tip end portion of the corner portion. If the thickness of the rubber material covering the constricted portion of the corner is made larger than the thickness of the rubber material covering the tip of the corner portion, the drive protrusion can be designed into a tapered shape as a whole, and the rubber material is molded. In the process and rubber crawler vulcanization process, the drive protrusion can be easily pulled out from the mold, and the large thickness of the rubber material covering the constricted part causes damage to the drive protrusion due to the sprocket drive pin and running. Generation of noise inside can be more reliably suppressed.

そして、この発明のゴムクローラ用芯金によれば、この発明のゴムクローラの駆動突起に用いることで、この発明のゴムクローラの前述した作用効果と同様の作用効果を奏することができる。   According to the rubber crawler core bar of the present invention, the same effects as those described above of the rubber crawler of the present invention can be obtained by using the rubber crawler drive protrusion of the present invention.

以下、本発明の実施の形態を実施例によって、図面に基づき詳細に説明する。ここに、図１は、この発明のゴムクローラの一実施例を展開した状態で一部分のみ示す平面図、図２は、上記実施例のゴムクローラを展開した状態で一部分のみ示す底面図、図３は、上記実施例のゴムクローラの、図１中のＡ−Ａ線に沿う断面図、図４は、上記実施例のゴムクローラの、図１中のＢ−Ｂ線に沿う断面図、図５は、上記実施例のゴムクローラの、図１中のＣ−Ｃ線に沿う断面図、図６（ａ），（ｂ），（ｃ）および（ｄ）は、上記実施例のゴムクローラに用いる、この発明のゴムクローラ用芯金の一実施例を示す平面図、正面図、側面図および、図６（ａ）中のＤ−Ｄ線に沿う断面図である。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view showing only a part of the rubber crawler according to the embodiment of the present invention, FIG. 2 is a bottom view showing only a part of the rubber crawler according to the above-described embodiment. FIG. 4 is a cross-sectional view of the rubber crawler of the above embodiment along the line AA in FIG. 1, FIG. 4 is a cross-sectional view of the rubber crawler of the above embodiment along the line BB in FIG. FIG. 6 is a cross-sectional view of the rubber crawler of the above embodiment, taken along line CC in FIG. 1, and FIGS. 6A, 6B, 6C and 6D are used for the rubber crawler of the above embodiment. FIG. 7 is a plan view, a front view, a side view, and a cross-sectional view taken along the line DD in FIG. 6A, showing an embodiment of the core for a rubber crawler of the present invention.

図中符号１は上記実施例のゴムクローラ、１０は上記実施例のゴムクローラ用芯金を示し、この実施例のゴムクローラ用芯金（以下、単に「芯金」という。）１０は、図６に詳細に示すように、平板状の芯金本体１１と、その芯金本体１１に立設した一対の角部１２とを具えてなるものである。   In the figure, reference numeral 1 denotes a rubber crawler of the above embodiment, 10 denotes a rubber crawler core metal of the above embodiment, and a rubber crawler core metal (hereinafter simply referred to as “core metal”) 10 of this embodiment is shown in the figure. As shown in detail in FIG. 6, a flat cored bar body 11 and a pair of corners 12 standing on the cored bar body 11 are provided.

一方、この実施例のゴムクローラ１は、当該ゴムクローラ１を構成するゴム材の補強、支持等のために、上記芯金１０を多数、当該ゴムクローラ１の周方向（図1では上下方向）へ所定ピッチで並べて埋設し、それらの芯金１０の角部１２をそれぞれゴム材で被覆して、当該ゴムクローラ１の内周面側に二股状に一対ずつ突出する駆動突起２を多数、当該ゴムクローラ１の周方向へ所定ピッチで並べて形成するとともに、当該ゴムクローラ１の外周面側に突出して当該ゴムクローラ１の幅方向（図２では左右方向）へ延在するラグ３を多数、上記芯金１０の間の位置にそれぞれ形成し、芯金本体１１の外側に通常のスチールコードを埋設してなる、無端の環状のものである。   On the other hand, the rubber crawler 1 of this embodiment has a large number of core bars 10 in the circumferential direction of the rubber crawler 1 (vertical direction in FIG. 1) in order to reinforce and support the rubber material constituting the rubber crawler 1. A plurality of drive projections 2 that protrude in pairs in a bifurcated manner on the inner peripheral surface side of the rubber crawler 1 are formed by covering the corner portions 12 of the cored bar 10 with rubber materials. A large number of lugs 3 that are formed side by side at a predetermined pitch in the circumferential direction of the rubber crawler 1 and project in the outer circumferential surface side of the rubber crawler 1 and extend in the width direction of the rubber crawler 1 (left-right direction in FIG. 2), These are endless annular members formed at positions between the cored bars 10 and having a normal steel cord embedded in the outer side of the cored bar body 11.

ここにおける芯金１０の芯金本体１１は、概略長方形状の板材であり、芯金１０は、その芯金本体１１の長手方向がゴムクローラ１の幅方向と平行になり、かつ角部１２が芯金本体１１からゴムクローラ１の内周面側に突出する向きで、ゴムクローラ１内に埋設される。一対の角部１２は、芯金本体１１の中央部に互いに間隔をもって芯金本体１１と一体に立設してあり、これにより芯金１０は、二股状をなす一対の角部１２を備えた形状に形成されている。そして各角部１２の先端部は、図１および図６（ａ）に示すように、先細りの概略山形形状とし、ゴムクローラ１の幅方向のその先端部の厚さをＬＷ、ゴムクローラ１の周方向のその先端部の厚さをＬＣとしたときに、周方向の厚さＬＣの方を大きくしてある（ＬＷ＜ＬＣ）。   The cored bar body 11 of the cored bar 10 here is a substantially rectangular plate material, and the cored bar 10 has a longitudinal direction of the cored bar body 11 parallel to the width direction of the rubber crawler 1 and corner portions 12. It is embedded in the rubber crawler 1 so as to protrude from the core metal body 11 toward the inner peripheral surface of the rubber crawler 1. The pair of corners 12 are erected integrally with the cored bar body 11 at a central portion of the cored bar body 11 so as to be spaced apart from each other, whereby the cored bar 10 includes a pair of corners 12 having a bifurcated shape. It is formed into a shape. As shown in FIGS. 1 and 6 (a), the tip of each corner 12 has a tapered, generally chevron shape, the thickness of the tip of the rubber crawler 1 in the width direction is LW, and the rubber crawler 1 When the thickness of the tip in the circumferential direction is LC, the circumferential thickness LC is larger (LW <LC).

また一対の角部１２の各々の、ゴムクローラ１の周方向に向く両側部には括れ部１３が設けてあり、この括れ部１３は、角部１２の先端部と芯金本体１１との間の部分を角部１２の中心側へ凹ませた形状とされている。このように、一対の角部１２の、ゴムクローラ１の周方向の両側面に括れ部１３を設けておくと、この芯金１０を埋設してゴムクローラ１を形成する際に、角部１２に基づいて形成される一対の駆動突起２の、ゴムクローラ１の周方向の両側で、駆動突起２の中腹から根元部周辺にかけてのゴム材の厚みを増加させることができる。さらに、一対の角部１２の間にはそれらを繋ぐ補強リブ１４が芯金本体１１と一体に形成されている。   Further, a constricted portion 13 is provided on each side portion of the pair of corner portions 12 facing the circumferential direction of the rubber crawler 1, and the constricted portion 13 is provided between the tip end portion of the corner portion 12 and the core metal body 11. This portion is recessed to the center side of the corner portion 12. As described above, when the constricted portions 13 are provided on both side surfaces of the pair of corner portions 12 in the circumferential direction of the rubber crawler 1, the corner portions 12 are formed when the core metal 10 is embedded to form the rubber crawler 1. The thickness of the rubber material from the middle of the drive protrusion 2 to the periphery of the root portion can be increased on both sides in the circumferential direction of the rubber crawler 1 of the pair of drive protrusions 2 formed based on the above. Further, a reinforcing rib 14 that connects the corner portions 12 is formed integrally with the core metal body 11.

この芯金１０を用いたこの実施例のゴムクローラ１において、各駆動突起２は、図３〜図５に示すように、各芯金１０の上記一対の角部１２を各々ゴム材で被覆して形成してあり、ここで各駆動突起２の、ゴムクローラ１の幅方向から見た形状は上記括れ部１３にゴム材が充満しているため、図４，図５に示すように、先細りの概略山形形状に形成されている。このようなゴムクローラ１は、従来と同様の工程で製造することができる。すなわち、芯金１０の角部１２に形成されている括れ部１３を埋めるような凸部をゴム材の成型工程でゴム材に形成する。このようなゴム材を用いることで、括れ部１３をゴムで充満させた駆動突起２を具えるゴムクローラ１を製造することができる。   In the rubber crawler 1 of this embodiment using the cored bar 10, each drive projection 2 covers the pair of corners 12 of each cored bar 10 with a rubber material, as shown in FIGS. Here, the shape of each drive projection 2 viewed from the width direction of the rubber crawler 1 is tapered as shown in FIGS. 4 and 5 because the constricted portion 13 is filled with a rubber material. It is formed in the general chevron shape. Such a rubber crawler 1 can be manufactured by a process similar to the conventional one. That is, a convex portion that fills the constricted portion 13 formed at the corner portion 12 of the cored bar 10 is formed on the rubber material in the rubber material molding step. By using such a rubber material, it is possible to manufacture the rubber crawler 1 including the driving protrusion 2 in which the constricted portion 13 is filled with rubber.

図７〜図９は、上記実施例のゴムクローラ１を図示しない機体のスプロケット２１とアイドラ２４との間に掛け渡して転輪２５で支持した状態を芯金１０間の断面で示す、図３と同様の向きでの断面図であり、図７は、ゴムクローラ１とスプロケット２１との掛合状態、図８はゴムクローラ１とアイドラ２４との掛合状態、図９はゴムクローラ１と転輪２５との掛合状態をそれぞれ示している。そして図１０はゴムクローラ１とスプロケット２１との掛合状態を示す、図５と同様の位置での断面図である。   FIGS. 7 to 9 show, in a cross-section between the core bars 10, a state in which the rubber crawler 1 of the above embodiment is supported between the sprocket 21 and the idler 24 of the airframe (not shown) and supported by the rolling wheels 25. 7 is a state in which the rubber crawler 1 and the sprocket 21 are engaged, FIG. 8 is a state in which the rubber crawler 1 and the idler 24 are engaged, and FIG. 9 is a state in which the rubber crawler 1 and the wheel 25 are engaged. And FIG. FIG. 10 is a cross-sectional view of the rubber crawler 1 and the sprocket 21 engaged with each other at the same position as in FIG.

これらの図に示すように、この実施例のゴムクローラ１によれば、芯金本体１１に立設した角部１２をゴム材で被覆して駆動突起２を形成していることから、スプロケット２１の円盤部２２の両面の外周縁部にスプロケット２１の軸線方向（図７では左右方向、図１０では紙面と直交する方向）へ向けて立設した駆動ピン２３が駆動突起２の、芯金１０の角部１２で支持したゴム材に接触して駆動力を伝達するので、スプロケット２１の駆動ピン２３による駆動突起２の破損や走行中の騒音の発生を抑制しつつ、芯金１０を介して効率的にゴムクローラ１に駆動力を伝達してゴムクローラ１を駆動することができる。   As shown in these figures, according to the rubber crawler 1 of this embodiment, the corners 12 erected on the metal core body 11 are covered with a rubber material to form the drive protrusions 2. The drive pin 23 of the metal core 10 of the drive protrusion 2 is a drive pin 23 erected on the outer peripheral edge portions of both surfaces of the disk portion 22 in the axial direction of the sprocket 21 (left-right direction in FIG. 7 and direction orthogonal to the paper surface in FIG. 10). Since the driving force is transmitted in contact with the rubber material supported by the corner portion 12 of the sprocket 21, the damage to the driving protrusion 2 by the driving pin 23 of the sprocket 21 and the generation of noise during traveling are suppressed and the core metal 10 is used. The rubber crawler 1 can be driven by efficiently transmitting a driving force to the rubber crawler 1.

しかもこの実施例のゴムクローラ１によれば、芯金１０の角部１２の先端部の、ゴムクローラ１の幅方向の寸法ＬＷとゴムクローラ１の周方向の寸法ＬＣとの関係をＬＷ＜ＬＣとして、ゴムクローラ１の周方向の角部先端部寸法ＬＣを、ゴムクローラ１の幅方向の角部先端部寸法ＬＷより大きくしていることから、芯金１０の角部１２の先端部がゴムクローラ１の周方向に充分な厚みを持って、その角部１２を被覆するゴム材を充分強固に支持しているので、図９に示す如き転輪２５の二枚の車輪２６が走行中に駆動突起２の、その角部１２を被覆するゴム材に乗り上げてもゴム材が大きく変形することがないため、ゴム材の欠落も生じにくい。また、例えゴム材が欠落したとしても、さほど駆動突起２と形状が変わらない角部１２の先端部が直ぐに現れることになる。それゆえこの実施例のゴムクローラ１によれば、例え駆動突起２への転輪２５の乗り上げが生じても、駆動突起２の転輪外れ防止ガイド機能の低下を防止するとともに、ゴムクローラ１の外観品質の低下も防止することができる。   Moreover, according to the rubber crawler 1 of this embodiment, the relationship between the width direction dimension LW of the rubber crawler 1 and the circumferential dimension LC of the rubber crawler 1 at the tip end portion of the corner portion 12 of the metal core 10 is expressed as LW <LC. As described above, since the corner tip portion dimension LC in the circumferential direction of the rubber crawler 1 is larger than the corner tip portion dimension LW in the width direction of the rubber crawler 1, the tip portion of the corner portion 12 of the core metal 10 is made of rubber. Since the rubber material covering the corner portion 12 has a sufficient thickness in the circumferential direction of the crawler 1 and sufficiently supports it, the two wheels 26 of the rolling wheels 25 as shown in FIG. Since the rubber material is not greatly deformed even if it rides on the rubber material covering the corner portion 12 of the driving projection 2, the rubber material is not easily lost. Further, even if the rubber material is missing, the tip end portion of the corner portion 12 whose shape does not change so much from that of the drive protrusion 2 appears immediately. Therefore, according to the rubber crawler 1 of this embodiment, even if the rolling wheel 25 rides on the driving protrusion 2, it is possible to prevent the guide protrusion function of the driving protrusion 2 from deteriorating and to prevent the rubber crawler 1 from moving. It is also possible to prevent deterioration in appearance quality.

さらに、この実施例のゴムクローラ１によれば、角部１２の先端部と芯金本体１１との間に、ゴムクローラ１の周方向へ向く括れ部１３を設けており、スプロケット２１の駆動ピン２３は、図１０から明らかなように、駆動突起２の、芯金１０の角部１２の先端部と芯金本体１１との間の、ゴムクローラ１の周方向へ向く部分を被覆するゴム材に当接して駆動力を伝達するので、上記の括れ部１３を被覆してスプロケット２１の駆動ピン２３と当接するゴム材を角部１２の先端部と芯金本体１１とで充分強固に支持することができ、これにより、スプロケット２１の駆動ピン２３による駆動突起２の破損や走行中の騒音の発生を確実に抑制することができる。   Furthermore, according to the rubber crawler 1 of this embodiment, the constricted portion 13 that faces the circumferential direction of the rubber crawler 1 is provided between the tip end portion of the corner portion 12 and the core metal body 11, and the drive pin of the sprocket 21 is provided. As is clear from FIG. 10, the rubber material 23 covers the portion of the drive protrusion 2 that faces the circumferential direction of the rubber crawler 1 between the tip of the corner 12 of the core 10 and the core body 11. Since the driving force is transmitted in contact with the rubber member, the rubber member that covers the constricted portion 13 and contacts the driving pin 23 of the sprocket 21 is sufficiently firmly supported by the tip end portion of the corner portion 12 and the core metal body 11. As a result, it is possible to reliably suppress the breakage of the drive protrusion 2 by the drive pin 23 of the sprocket 21 and the generation of noise during traveling.

さらに、この実施例のゴムクローラ１によれば、図５および図１０に示すように、角部１２の括れ部１３を被覆するゴム材の厚さを、角部１２の先端部を被覆するゴム材の厚さより大きくしているので、駆動突起２を全体に先細りの形状に設計し得て、ゴム材の成型工程およびゴムクローラ１の加硫工程で金型からの駆動突起の抜き出しを容易ならしめることができるとともに、括れ部１３を被覆するゴム材の大きい厚さによって、スプロケット２１の駆動ピン２３による駆動突起２の破損や走行中の騒音の発生をより確実に抑制することができる。   Furthermore, according to the rubber crawler 1 of this embodiment, as shown in FIGS. 5 and 10, the thickness of the rubber material covering the constricted portion 13 of the corner portion 12 is set to the rubber covering the tip portion of the corner portion 12. Since the thickness of the material is larger than the thickness of the material, the drive protrusion 2 can be designed to have a tapered shape as a whole, and it is easy to extract the drive protrusion from the mold in the rubber material molding process and the rubber crawler 1 vulcanization process. In addition to being able to squeeze, the large thickness of the rubber material covering the constricted portion 13 can more reliably suppress the breakage of the drive projection 2 by the drive pin 23 of the sprocket 21 and the generation of noise during traveling.

そして、この実施例の芯金１０によれば、上記実施例のゴムクローラ１の駆動突起２に用いることで、上記実施例のゴムクローラ１の上述した作用効果と同様の作用効果を奏することができる。   And according to the metal core 10 of this embodiment, by using it for the drive projection 2 of the rubber crawler 1 of the above embodiment, the same operation effects as the above-described operation effects of the rubber crawler 1 of the above embodiment can be obtained. it can.

以上、図示例に基づき説明したが、本発明は上述の実施例に限定されるものでなく、特許請求の範囲に記載された範囲内において、種々の変形・変更が可能である。例えば、芯金の各角部の先端部の、ゴムクローラの幅方向の厚さをＬＷ、ゴムクローラの周方向の厚さをＬＣとして、それら幅方向の厚さＬＷと周方向の厚さＬＣとを等しくしても（ＬＷ＝ＬＣ）、上述したと同様の作用効果を得ることができる。   While the present invention has been described based on the illustrated examples, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made within the scope described in the claims. For example, assuming that the thickness in the width direction of the rubber crawler is LW and the thickness in the circumferential direction of the rubber crawler is LC, the thickness LW in the width direction and the thickness LC in the circumferential direction at the end of each corner of the core metal Are equal (LW = LC), the same effects as described above can be obtained.

かくしてこの発明のゴムクローラおよびゴムクローラ用芯金によれば、例え駆動突起への転輪の乗り上げが生じても、駆動突起の転輪外れ防止ガイド機能の低下を防止するとともに、ゴムクローラの外観品質の低下も防止することができる。   Thus, according to the rubber crawler and the core for rubber crawler of the present invention, even if the rolling wheel rides on the driving projection, the guide function of preventing the driving projection from falling off is prevented, and the appearance of the rubber crawler A decrease in quality can also be prevented.

この発明のゴムクローラの一実施例を展開した状態で一部分のみ示す平面図である。It is a top view which shows only a part in the state which developed one example of a rubber crawler of this invention. 上記実施例のゴムクローラを展開した状態で一部分のみ示す底面図である。It is a bottom view which shows only a part in the state which expand | deployed the rubber crawler of the said Example. 上記実施例のゴムクローラの、図１中のＡ−Ａ線に沿う断面図である。It is sectional drawing which follows the AA line in FIG. 1 of the rubber crawler of the said Example. 上記実施例のゴムクローラの、図１中のＢ−Ｂ線に沿う断面図である。It is sectional drawing which follows the BB line in FIG. 1 of the rubber crawler of the said Example. 上記実施例のゴムクローラの、図１中のＣ−Ｃ線に沿う断面図である。It is sectional drawing which follows the CC line | wire in FIG. 1 of the rubber crawler of the said Example. （ａ），（ｂ），（ｃ）および（ｄ）は、上記実施例のゴムクローラに用いる、この発明のゴムクローラ用芯金の一実施例を示す平面図、正面図、側面図および、（ａ）中のＤ−Ｄ線に沿う断面図である。(A), (b), (c), and (d) are a plan view, a front view, a side view, and a side view showing an embodiment of the core for a rubber crawler of the present invention used in the rubber crawler of the above-described embodiment, It is sectional drawing which follows the DD line in (a). 上記実施例のゴムクローラとスプロケットとの掛合状態を芯金間の断面で示す、図３と同様の向きでの断面図である。It is sectional drawing in the direction similar to FIG. 3 which shows the engagement state of the rubber crawler of the said Example, and a sprocket in the cross section between core bars. 上記実施例のゴムクローラとアイドラとの掛合状態を芯金間の断面で示す、図３と同様の向きでの断面図である。It is sectional drawing in the direction similar to FIG. 3 which shows the engagement state of the rubber crawler and idler of the said Example by the cross section between core bars. 上記実施例のゴムクローラと転輪との掛合状態を芯金間の断面で示す、図３と同様の向きでの断面図である。It is sectional drawing in the direction similar to FIG. 3 which shows the engagement state of the rubber crawler of the said Example, and a wheel with the cross section between core bars. 上記実施例のゴムクローラとスプロケットとの掛合状態を示す、図５と同様の位置での断面図である。It is sectional drawing in the position similar to FIG. 5 which shows the engagement state of the rubber crawler of the said Example, and a sprocket.

符号の説明Explanation of symbols

１ ゴムクローラ
２ 駆動突起
３ ラグ
１０ 芯金
１１ 芯金本体
１２ 角部
１３ 括れ部
１４ 補強リブ
２１ スプロケット
２２ 円盤部
２３ 駆動ピン
２４ アイドラ
２５ 転輪
２６ 車輪 DESCRIPTION OF SYMBOLS 1 Rubber crawler 2 Drive protrusion 3 Lug 10 Core metal 11 Core metal main body 12 Corner | angular part 13 Constriction part 14 Reinforcement rib 21 Sprocket 22 Disk part 23 Drive pin 24 Idler 25 Rolling wheel 26 Wheel

Claims (4)

平板状の芯金本体と、その芯金本体に立設した角部とを具える芯金を埋設し、その芯金の角部をゴム材で被覆して駆動突起を形成してなるゴムクローラであって、
前記角部の先端部の、前記ゴムクローラの幅方向の寸法をＬＷとするとともに、
前記角部の先端部の、前記ゴムクローラの周方向の寸法をＬＣとして、
ＬＷ≦ＬＣとしたことを特徴とするゴムクローラ。 A rubber crawler in which a core metal comprising a flat core metal body and corners standing on the core metal body is embedded, and the corners of the metal core are covered with a rubber material to form drive protrusions. Because
The width of the rubber crawler at the tip of the corner is LW, and
The circumferential dimension of the rubber crawler at the tip of the corner is LC,
A rubber crawler characterized by LW ≦ LC. 前記角部の先端部と前記芯金本体との間に、前記ゴムクローラの周方向へ向く括れ部を設けたことを特徴とする、請求項１記載のゴムクローラ。   The rubber crawler according to claim 1, wherein a constricted portion facing a circumferential direction of the rubber crawler is provided between a tip end portion of the corner portion and the core metal body. 前記角部の前記括れ部を被覆するゴム材の厚さを、前記角部の前記先端部を被覆するゴム材の厚さより大きくしたことを特徴とする、請求項１または２記載のゴムクローラ。   The rubber crawler according to claim 1 or 2, wherein a thickness of a rubber material covering the constricted portion of the corner portion is larger than a thickness of a rubber material covering the tip portion of the corner portion. 平板状の芯金本体と、その芯金本体に立設した角部とを具える、請求項１から３までの何れか記載のゴムクローラ用の芯金であって、
前記角部の先端部の、前記ゴムクローラの幅方向の寸法をＬＷとするとともに、
前記角部の先端部の、前記ゴムクローラの周方向の寸法をＬＣとして、
ＬＷ≦ＬＣとしたことを特徴とする、ゴムクローラ用芯金。 A metal core for a rubber crawler according to any one of claims 1 to 3, comprising a flat metal core body and a corner erected on the metal core body,
The width of the rubber crawler at the tip of the corner is LW, and
The circumferential dimension of the rubber crawler at the tip of the corner is LC,
A metal core for a rubber crawler, characterized in that LW ≦ LC.
JP2007229438A 2007-09-04 2007-09-04 Rubber crawler and core for rubber crawler Active JP5097482B2 (en)

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JP2007229438A JP5097482B2 (en) 2007-09-04 2007-09-04 Rubber crawler and core for rubber crawler
CN2008101355655A CN101380977B (en) 2007-09-04 2008-09-03 Rubber track
KR1020080086523A KR101032213B1 (en) 2007-09-04 2008-09-03 Rubber crawler, sprocket suitable for the same, and core for rubber crawler

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Cited By (17)

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JP2010247697A (en) * 2009-04-16 2010-11-04 Bridgestone Corp Rubber crawler
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JP2011073651A (en) * 2009-10-01 2011-04-14 Bridgestone Corp Sprocket, and rubber crawler incorporating body equipped therewith
CN102686475A (en) * 2009-10-01 2012-09-19 株式会社普利司通 Sprocket and rubber crawler assembly provided therewith
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US10843750B2 (en) 2010-12-14 2020-11-24 Camso Inc. Endless track for traction of a vehicle
US9878750B2 (en) 2010-12-14 2018-01-30 Camso Inc. Endless track for traction of a vehicle
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US10328982B2 (en) 2010-12-14 2019-06-25 Camso Inc. Drive sprocket, drive lug configuration and track drive arrangement for an endless track vehicle
US10730572B1 (en) 2010-12-14 2020-08-04 Camso Inc. Endless track for traction of a vehicle
US9162718B2 (en) 2010-12-14 2015-10-20 Camso Inc. Endless track for traction of a vehicle
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US11167810B2 (en) 2015-03-04 2021-11-09 Camso Inc. Track system for traction of a vehicle
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US11835955B2 (en) 2017-12-08 2023-12-05 Camso Inc. Systems and methods for monitoring off-road vehicles

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