JPH0338485A - Steering control device for caterpillar vehicle - Google Patents
Steering control device for caterpillar vehicleInfo
- Publication number
- JPH0338485A JPH0338485A JP17467789A JP17467789A JPH0338485A JP H0338485 A JPH0338485 A JP H0338485A JP 17467789 A JP17467789 A JP 17467789A JP 17467789 A JP17467789 A JP 17467789A JP H0338485 A JPH0338485 A JP H0338485A
- Authority
- JP
- Japan
- Prior art keywords
- ski
- snow
- cover
- steering
- steering control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004033 plastic Substances 0.000 claims abstract description 10
- 230000003068 static effect Effects 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M27/00—Propulsion devices for sledges or the like
- B62M27/02—Propulsion devices for sledges or the like power driven
- B62M2027/021—Snow bikes resembling conventional motorcycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M27/00—Propulsion devices for sledges or the like
- B62M27/02—Propulsion devices for sledges or the like power driven
- B62M2027/025—Snow mobiles characterised by the skis
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Handcart (AREA)
Abstract
Description
［産業上の利用分野］
本願は、雪上バイツなどの無限軌道装置を備えた車両に
使用する操向装置に関する。[Industrial Field of Application] The present application relates to a steering device used in a vehicle equipped with a track device such as a snow bite.
車体前部のフロントフォーク下部に操向スキーを枢着す
るとともに、車体後部の無限軌道装置により駆動する、
例えば雪上バイツのような車両は公知である（−例とし
て、米国特許第４６．１３００６号がある）。このよう
な車両の操向スキーは金属製であることが一般的である
。
［発明の解決しようとする課題］
ところで、上記の操向スキーの場合、金属の雪面に対す
る静止摩擦係数が比較的大きいため、裏側の雪と接触す
る面（以下、接雪面という）に着雪し、これがやがて氷
結することにより、走行抵抗を増大させることがある。
また、操向スキーの横幅は比較的狭くなっていることが
普通であるが、このような場合、接雪面の面圧が高くな
るので、深雪上で沈み込みを生じ雪中へもぐってしまう
現象（スタック）を生じることがある。ゆえに、耐スタ
ック性を向上させて、深雪上の走破性を向上させること
も望まれている。
そこで本願は、かか゛る諸点を解決できる無限軌道車両
の操向装置を提供することを目的とする。
［課題を解決するための手段］
上記課題を解決するため、請求項第１項の発明は、操向
スキーの少なくとも裏面側へプラスチック製のスキーカ
バーを着脱自在に取付けたことを特徴とする。
また、請求項第２項の発明は、このスキーカバーの左右
両側に側方へ延出する幅広部を設け、スキーカバーの横
幅を操向スキーの横幅よりも大きくしたことを特徴とす
る。
［発明の作用］
操向スキーの接、雪面に取付けたスキーカバーはプラス
チック製のため、金属に比べ雪に対する静止摩擦係数が
小さくなる。このため、スキーカバーに対して着雪しに
くくなる。その結果、雪が氷結することによる走行抵抗
の増大を防止し易くなる。
また、スキーカバーの横幅を操向スキーよりも幅広にす
ると、接雪面における面圧が小さくなるので、深雪上で
も沈み込みにくくなり、耐スタック性が向上する。
［実施例］
第１図乃至第５図に第１実施例を示す。第１図は自動２
輪車の車体を転用してなる雪上バイツの全体側面を示す
図、第２図はその平面形状を後部側の一部を切欠いて示
す図であり、１はフロントフォーク、２は操向スキー、
３はハンドル、４は車体フレーム、５は燃料タンク、６
はシート、７はエンジン、８はリヤフォーク、９は無限
軌道装置である。この雪上バイツは、エンジン７で無限
軌道装置９を駆動することにより雪上を走行でき、かつ
ハンドル３を操作して操向スキー２による操向が可能と
なっている。
操向スキー２は第３図乃至第５図に詳しいように、スキ
ーカバーｌＯが操向スキー２の底面側を覆っている。ス
キーカバー１０は金属に対する静止摩擦係数の小さなプ
ラスチックからなり、前端部は取付ビス１１（第４図参
照）により、また後部側は、左右のサイドエツジ１２を
予め操向スキー２の側面に設けられている取付部３ヘボ
ルト１４ａ及びナツト１４ｂ（第５図）で取付ける際。
操向スキー２とサイドエツジ１２の間に挟まれた状態で
共締め固定する。サイドエツジ１２のボルト通し穴１２
ａに対応して、スキーカバーｌＯ及び取付部１３の各側
面には多数のボルト通し穴１０ａ及び１３ａが設けられ
ており、サイドエツジ１２の取付位置を前後方向へ調節
可能になっている。スキーカバー１０の後端部の上方部
分は前方へ突出してオーバーハング部１５をなし、ここ
に操向スキー２の後端部を収容している。
また、第５図に示すように、操向スキー２の接雪面側中
央部にはセンターランチ１６が設けられており、その取
付軸１７はスキーカバー１０及び操向スキー２を貫いて
上方へ出、ここをナツト１８によって周定している。し
たがって、センターランチ１６の取付部でもスキーカバ
ー１０を操向スキー２と共締めしている。
図中の符号１９はフロントフォークｌと操向スキー２を
連結するためのスキーブラケット、２０は自動２輪車と
して使用する際のフロントアクスル支持部を利用して取
付けられるフロントフォークｌとスキーブラケット１９
との連結軸、２１はスキーブラケット１９と操向スキー
２との枢着軸、２２はフロントサブクツション、２３は
リバウンドラバー、２４は操向スキー２を持ち上げると
きなどに利用されるプロテクターであり、スプリングを
芯材とし表面をラバーコーティングすることによりフレ
キシブルにしである。
本実施例では、スキーカバー１０を静止摩擦係数が小さ
いプラスチック製としたので、金属製の操向スキー２を
そのまま使用する場合のように、接雪面への着雪並びに
氷結が少なくなり、着雪等による走行抵抗の増大を防止
できる。そのうえ、スキーカバー１０は着脱自在である
から、雪質に合わせて材質を変更することにより、最も
静止摩擦係数が小さくなるよう調節でき、かつスキーカ
バー１０が破損した場合にはスキーカバー１０のみを交
換するだけで足りる。しかも、スキーカバ−１０を操向
スキー２に対してサイドエツジ１２及びセンターランナ
１６で共線めするので、スキーカバー１０専用の取付部
材は取付ビス１１のみとなり、部品点数並びに取付工数
を少なくできる。
第６図乃至第１２図は第２実施例を示す。なお、第１実
施例と共通機能を有する部分については同一符号を使用
して説明するものとする。
第６図乃至第１０図に示すように、このスキーカバー１
０は左右側部に幅広部３０を形成してあり、スキーカバ
ー１０の横幅りは操向スキー２の横幅をβとした場合、
Ｌｂｖ２ｊ２ （第７図参照）程度になっている。但し
、βに対するＬの程度は任意に増減可能である。また、
操向スキー２の左右両側面に沿うよう取付部３１を一体
に立上がり形成してあり、ここで操向スキー２に設けら
れているサイドエツジ取付用のボルト１３とナツト１４
で操向スキー２と固定している。但し、本実施における
サイドエツジ１２はスキーカバー１０の裏面左右へ一体
に突出形成してなるものである（第９図参照）。
また、スキーカバー１０の前端部は第１１図に示すよう
に、操向スキー２の先端を袋状に覆うため左右から中心
方向へ湾曲するオーバーハング部３２をなし、この中央
部で前後方向に分割されているフランジ部３３をプロテ
クター２４の両側から合わせてボルト３４及びナツト３
５により締結している。なお、スキーカバー１０の後端
部にオーバーハング部１５を形成し、ここに操向スキー
２の後端部を収容する点は前実施例同様である。
すなわち、第１Ｏ図に示すように、スキーカバー１０は
操向スキー２に対して２カ所のボルト、ナツト結合（１
４ａ、１４ｂ）だけで容易に着脱自在となっている。
このように、スキーカバー１０を幅広に形成すると、雪
面に対するスキーカバー１０の面圧を小さくできるので
、深雪に対する沈み込みを少なくし、耐スタック性を向
上でき、その結果、深雪上における走破性を向上させる
ことができる。また、サイドエツジ１２をスキーカバー
１０と一体にしたので、部品点数を削減できる。
第１２図はコーナリング時のバンク状態を示す図であり
、このように幅広のものであっても、スキーカバー１０
がプラスチック製のため、バンク時には雪面と接触する
側の幅広部３０が容易に弾性変形可能である。ゆえに、
操向スキー２の操向が容易になる。
［発明の効果］
請求項第１項記載の発明によれば、操向スキーの接雪面
側へプラスチック製のスキーカバーを着脱自在に取付け
たので、金属製の操向スキーが直接雪面へ接触する場合
と比べ、静止摩擦係数を小さくできる。ゆえに、スキー
カバーの接雪面に対する着雪並びに氷結を防止できやす
くなり、走行抵抗の増大を抑制できる。しかも、スキー
カバーの材質を変更することにより、雪質に応じて最適
なものを選択することができる。さらに、スキーカバー
の破損時にはスキーカバーのみを交換すれば足りるので
、経済性も良好になる。
また、請求項第２項記載の発明によれば、スキーカバー
を操向スキーよりも広幅にしたので、深雪上における沈
み込みを防止して、耐スタック性を向上でき、その結果
深雪に対する走破性を向上できる。しかも、スキーカバ
ーがプラスチック製のため、弾性変形が容易になり、幅
広であっても操向性を良好に維持できる。The steering ski is pivoted to the bottom of the front fork at the front of the vehicle, and is driven by a track device at the rear of the vehicle.
Vehicles such as Snow Bites are known (for example, see US Pat. No. 46,13006). The steering skis of such vehicles are generally made of metal. [Problem to be solved by the invention] By the way, in the case of the above-mentioned steering ski, since the coefficient of static friction of the metal against the snow surface is relatively large, it is difficult to land on the surface that contacts the snow on the back side (hereinafter referred to as the snow contact surface). Snow, which eventually freezes, can increase running resistance. In addition, the width of the steering ski is usually relatively narrow, but in such a case, the surface pressure on the snow contact surface increases, causing the ski to sink in deep snow and slip into the snow. A phenomenon (stuck) may occur. Therefore, it is also desired to improve the stacking resistance and improve the running performance on deep snow. Therefore, an object of the present application is to provide a steering device for a tracked vehicle that can solve these problems. [Means for Solving the Problems] In order to solve the above problems, the invention of claim 1 is characterized in that a plastic ski cover is detachably attached to at least the back side of the steering ski. Further, the invention according to claim 2 is characterized in that wide portions extending laterally are provided on both left and right sides of the ski cover, and the width of the ski cover is made larger than the width of the steering ski. [Operation of the invention] Since the ski cover attached to the snow surface in contact with the steering ski is made of plastic, the coefficient of static friction against snow is smaller than that of metal. This makes it difficult for snow to adhere to the ski cover. As a result, it becomes easier to prevent an increase in running resistance due to freezing of snow. Furthermore, if the width of the ski cover is made wider than the steering ski, the surface pressure on the snow-contacting surface will be reduced, making it difficult for the ski cover to sink even on deep snow, improving the stacking resistance. [Example] A first example is shown in FIGS. 1 to 5. Figure 1 shows automatic 2
Figure 2 is a diagram showing the overall side view of the Snow Bites, which is made by repurposing the body of a wheeled vehicle, and Figure 2 is a diagram showing its planar shape with a part of the rear side cut away. 1 is a front fork, 2 is a steering ski,
3 is the handle, 4 is the body frame, 5 is the fuel tank, 6
is a seat, 7 is an engine, 8 is a rear fork, and 9 is a track device. This Snow Bite can travel on snow by driving a track device 9 with an engine 7, and can be steered with steering skis 2 by operating a handle 3. As detailed in FIGS. 3 to 5, the steering ski 2 has a ski cover lO covering the bottom side of the steering ski 2. The ski cover 10 is made of plastic with a small coefficient of static friction against metal, and the front end is provided with mounting screws 11 (see Figure 4), and the rear end is provided with left and right side edges 12 on the sides of the steering ski 2. When installing the bolt 14a and nut 14b (Fig. 5) to the mounting part 3. The steering ski 2 and the side edge 12 are clamped together and fixed together. Bolt through hole 12 on side edge 12
Corresponding to a, a large number of bolt holes 10a and 13a are provided on each side of the ski cover 10 and the mounting portion 13, so that the mounting position of the side edge 12 can be adjusted in the front-rear direction. The upper part of the rear end of the ski cover 10 projects forward to form an overhang 15 in which the rear end of the steering ski 2 is accommodated. Further, as shown in FIG. 5, a center launch 16 is provided at the center of the steering ski 2 on the snow contact surface side, and its mounting shaft 17 extends upward through the ski cover 10 and the steering ski 2. This area is circumscribed by nut 18. Therefore, the ski cover 10 is also fastened together with the steering ski 2 at the mounting portion of the center launch 16. The reference numeral 19 in the figure is a ski bracket for connecting the front fork l and the steering ski 2, and 20 is the front fork l and ski bracket 19 that are attached using the front axle support when used as a two-wheeled motor vehicle.
21 is a pivot shaft between the ski bracket 19 and the steering ski 2, 22 is a front subtraction, 23 is a rebound rubber, and 24 is a protector used when lifting the steering ski 2. It is made flexible by using a spring as the core material and coating the surface with rubber. In this embodiment, the ski cover 10 is made of plastic with a small coefficient of static friction, so unlike the case where the steering ski 2 made of metal is used as is, there is less snow and ice accretion on the snow contact surface. It is possible to prevent an increase in running resistance due to snow, etc. Moreover, since the ski cover 10 is removable, the coefficient of static friction can be adjusted to be the smallest by changing the material according to the snow quality, and if the ski cover 10 is damaged, only the ski cover 10 can be removed. Just replacing it is sufficient. Moreover, since the ski cover 10 is aligned with the steering ski 2 by the side edges 12 and the center runner 16, the only mounting member dedicated to the ski cover 10 is the mounting screw 11, which reduces the number of parts and the number of installation steps. 6 to 12 show a second embodiment. Note that parts having common functions with those of the first embodiment will be described using the same reference numerals. As shown in FIGS. 6 to 10, this ski cover 1
0 has wide portions 30 formed on the left and right sides, and the width of the ski cover 10 is as follows, assuming that the width of the steering ski 2 is β:
It is approximately Lbv2j2 (see Fig. 7). However, the degree of L relative to β can be increased or decreased arbitrarily. Also,
Mounting portions 31 are integrally formed to stand up along both left and right sides of the steering ski 2, and here the side edge mounting bolts 13 and nuts 14 provided on the steering ski 2 are attached.
It is fixed to steering ski 2. However, in this embodiment, the side edges 12 are integrally formed to protrude from the left and right sides of the back surface of the ski cover 10 (see FIG. 9). In addition, as shown in FIG. 11, the front end of the ski cover 10 forms an overhang part 32 that curves from left to right toward the center in order to cover the tip of the steering ski 2 in a bag-like manner. Align the divided flange parts 33 from both sides of the protector 24 and tighten the bolts 34 and nuts 3.
5 has been concluded. Note that, as in the previous embodiment, an overhang part 15 is formed at the rear end of the ski cover 10, and the rear end of the steering ski 2 is accommodated therein. That is, as shown in FIG. 1O, the ski cover 10 is connected to the steering ski 2 by two bolts and nuts (
4a, 14b) can be easily attached and detached. In this way, by forming the ski cover 10 to have a wide width, the surface pressure of the ski cover 10 against the snow surface can be reduced, thereby reducing sinking in deep snow and improving the stacking resistance.As a result, running performance on deep snow is improved. can be improved. Furthermore, since the side edge 12 is integrated with the ski cover 10, the number of parts can be reduced. FIG. 12 is a diagram showing the banking state during cornering, and even with such a wide ski cover 10
Since it is made of plastic, the wide portion 30 on the side that contacts the snow surface can be easily elastically deformed when banking. therefore,
Steering of the steering ski 2 becomes easier. [Effects of the Invention] According to the invention described in claim 1, since the plastic ski cover is detachably attached to the snow contact surface side of the steering ski, the metal steering ski can be directly attached to the snow surface. Compared to the case of contact, the coefficient of static friction can be reduced. Therefore, it becomes easier to prevent snow from accreting and freezing on the snow-contacting surface of the ski cover, and an increase in running resistance can be suppressed. Moreover, by changing the material of the ski cover, the most suitable one can be selected depending on the snow quality. Furthermore, if the ski cover is damaged, it is sufficient to replace only the ski cover, which improves economic efficiency. Further, according to the invention described in claim 2, since the ski cover is made wider than the steering ski, it is possible to prevent sinking on deep snow and improve the stacking resistance, and as a result, the running performance in deep snow is improved. can be improved. Moreover, since the ski cover is made of plastic, it can be easily elastically deformed, and good steering performance can be maintained even when the ski cover is wide.
第１図乃至第５図は第１実施例であり、第１図は雪上バ
イツの側面図、第２図は無限軌道装置の一部を破断して
示す平面図、第３図は操向スキー及びスキーカバ一部分
の拡大側面図、第４図は操向スキーとスキーカバーを主
体とする部分の組付図、第５図は第３図のＡ−Ａ線断面
図である。第６図乃至第１２図は第２実施例であり、第
６図はスキーカバーを操向スキーに取付けた状態の斜視
図、第７図は平面図、第８図は側面図、第９図は第８図
のＢ−Ｂ線断面図、第１０図は操向スキーとスキーカバ
ーの組付図、第１１図は第８図のＣ−Ｃ線断面図、第１
２図は作用を示す第８図と同様の図である。
（符号の説明）
１・・・フロントフォーク、２・・・操向スキー、３・
・・ハンドル、４・・・車体フレーム、９・・・無限軌
道装置、１０・・・スキーカバー １２・・・サイドエ
ツジ、３０・・・幅広部。Figures 1 to 5 show the first embodiment, Figure 1 is a side view of the snow bite, Figure 2 is a partially cutaway plan view of the endless track device, and Figure 3 is the steering ski. and an enlarged side view of a part of the ski cover, FIG. 4 is an assembly diagram of a portion mainly consisting of the steering ski and ski cover, and FIG. 5 is a sectional view taken along the line A--A in FIG. 3. Figures 6 to 12 show the second embodiment; Figure 6 is a perspective view of the ski cover attached to the steering ski, Figure 7 is a plan view, Figure 8 is a side view, and Figure 9 is a perspective view of the ski cover attached to the steering ski. is a sectional view taken along line B-B in Figure 8, Figure 10 is an assembly diagram of the steering ski and ski cover, Figure 11 is a sectional view taken along line CC in Figure 8, and Figure 1 is a sectional view taken along line C-C in Figure 8.
FIG. 2 is a diagram similar to FIG. 8 showing the operation. (Explanation of symbols) 1...Front fork, 2...Steering ski, 3.
...Handle, 4.Vehicle frame, 9.Track device, 10.Ski cover 12.Side edge, 30.Wide part.
Claims (1)
枢着するとともに、車体後部の無限軌道装置により駆動
する車両において、前記操向スキーの少なくとも裏面側
へプラスチック製のスキーカバーを着脱自在に取付けた
ことを特徴とする無限軌道車両の操向装置。（２）請求
項１項に記載されたスキーカバーの左右両側に側方へ延
出した幅広部を設け、スキーカバーの横幅を操向スキー
の横幅よりも大きくしたことを特徴とする無限軌道車両
の操向装置。(1) In a vehicle in which a steering ski is pivoted to the lower part of the front fork at the front of the vehicle body and is driven by a track device at the rear of the vehicle body, a plastic ski cover can be attached and detached to at least the back side of the steering ski. A steering device for a tracked vehicle, characterized in that it is attached to the steering device. (2) A tracked vehicle characterized in that the ski cover according to claim 1 is provided with wide portions extending laterally on both the left and right sides, and the width of the ski cover is made larger than the width of the steering ski. steering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1174677A JP2852529B2 (en) | 1989-07-06 | 1989-07-06 | Tracked vehicle steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1174677A JP2852529B2 (en) | 1989-07-06 | 1989-07-06 | Tracked vehicle steering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0338485A true JPH0338485A (en) | 1991-02-19 |
| JP2852529B2 JP2852529B2 (en) | 1999-02-03 |
Family
ID=15982767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1174677A Expired - Fee Related JP2852529B2 (en) | 1989-07-06 | 1989-07-06 | Tracked vehicle steering system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2852529B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11198486B2 (en) * | 2018-02-19 | 2021-12-14 | Bombardier Recreational Products Inc. | Clip for and method of adjusting ski position |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111175U (en) * | 1987-01-13 | 1988-07-16 | ||
| JPH01141171A (en) * | 1987-11-25 | 1989-06-02 | Sumitomo Rubber Ind Ltd | Snow car |
-
1989
- 1989-07-06 JP JP1174677A patent/JP2852529B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111175U (en) * | 1987-01-13 | 1988-07-16 | ||
| JPH01141171A (en) * | 1987-11-25 | 1989-06-02 | Sumitomo Rubber Ind Ltd | Snow car |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2852529B2 (en) | 1999-02-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |