JPH051508Y2 - - Google Patents
Info
- Publication number
- JPH051508Y2 JPH051508Y2 JP1986193077U JP19307786U JPH051508Y2 JP H051508 Y2 JPH051508 Y2 JP H051508Y2 JP 1986193077 U JP1986193077 U JP 1986193077U JP 19307786 U JP19307786 U JP 19307786U JP H051508 Y2 JPH051508 Y2 JP H051508Y2
- Authority
- JP
- Japan
- Prior art keywords
- torsion bar
- bush
- cab
- bushing
- bracket
- 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.)
- Expired - Lifetime
Links
- 239000004519 grease Substances 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 241001232202 Chrysothamnus stylosus Species 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
- Springs (AREA)
- Sealing Devices (AREA)
- Vehicle Body Suspensions (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案はテイルトキヤブのグリース供給構造に
係り、特にキヤブをテイルトさせるべく捩られ回
転するトーシヨンバーを支持するブユシユにグリ
ースを供給するためのテイルトキヤブのグリース
供給構造に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a grease supply structure for a tailed cab, and in particular to a tailed cab grease for supplying grease to a bush that supports a torsion bar that is twisted and rotated to tilt the cab. Regarding the supply structure.
［従来の技術］
キヤブのテイルト機構は第２図に示すように、
トーシヨンバーａを車幅方向に配設し、このトー
シヨンバーａの一端を車体フレームｂに固定する
と共に他端にはレバｃを結合してこのレバｃをキ
ヤブｄの下面等に係合させることにより、トーシ
ヨンバーａの捩り弾性を利用して車体フレームｂ
に対してキヤブｄをテイルトさせるようになつて
いる。（実開昭59−50878号公報等）。特にレバｃ
が結合される側のトーシヨンバーａの他端の支持
構造は第３図に示すように、車体フレームｂの車
幅方向一側端部に固定したブラケツトｅに車幅方
向に沿つて貫通形成させた貫通孔ｆに、トーシヨ
ンバーａの他端ｇを挿通させて、捩りに伴なう回
転を許容して支持するようになつている。殊にこ
の貫通孔ｆには、トーシヨンバーａの外周面ｈを
径方向外方から囲繞して回転自在に支持する内周
面ｉを有する樹脂製ブツシユｊが取り付けられて
いる。[Prior art] As shown in Fig. 2, the tail mechanism of the cab is as follows.
By arranging a torsion bar a in the vehicle width direction, fixing one end of the torsion bar a to the vehicle body frame b, and coupling a lever c to the other end, the lever c is engaged with the lower surface of the cab d, etc. Using the torsional elasticity of torsion bar a, the body frame b
It is designed to tilt the cab d against. (Utility Model Application Publication No. 59-50878, etc.). Especially lever c
As shown in Fig. 3, the support structure for the other end of the torsion bar a to which the torsion bar a is connected is formed by penetrating the bracket e fixed to one end of the vehicle body frame b in the vehicle width direction. The other end g of the torsion bar a is inserted through the through hole f, and is supported while allowing rotation due to torsion. In particular, a resin bushing j having an inner circumferential surface i that surrounds the outer circumferential surface h of the torsion bar a from the outside in the radial direction and rotatably supports the outer circumferential surface h of the torsion bar a is attached to the through hole f.
［考案が解決しようとする問題点］
ところで従来にあつては、トーシヨンバーａを
支持するブツシユｊが、車両走行中におけるキヤ
ブｄの上下振動や、この上下振動に伴なつて繰り
返されるトーシヨンバーａの僅かな回転により、
短い期間で相当摩耗してしまうという問題があつ
た。そして、このようなブツシユｊの摩耗は第４
図に示すように、トーシヨンバーａの支持にガタ
を生じさせてその軸心位置Ｘを下方に下げ（図中
Ａで示す）、結果的にトーシヨンバーａの捩り角
（傾き）θを初期の捩り角（傾き）αよりも大き
くし（α＜θ）、トーシヨンバネのセツトフオー
スを小さくしてキヤブのテイルト操作を重くして
しまうこととなつていた。[Problems to be Solved by the Invention] Conventionally, the bush j supporting the torsion bar a is subject to the up and down vibrations of the cab d while the vehicle is running, and the slight vibrations of the torsion bar a that are repeated due to this up and down vibration. Due to rotation,
There was a problem that it wore out considerably in a short period of time. This type of wear on the bushings is the fourth problem.
As shown in the figure, play is generated in the support of torsion bar a to lower its axial center position (Inclination) was to be made larger than α (α < θ), and the set force of the torsion spring was made small, making it difficult to tilt the cab.
またこのようなブツシユｊの摩耗によるガタは
振動発生源となり、車両走行中にキヤブｄの低級
音（騒音）を発生させることともなつていた。 In addition, the backlash caused by the wear of the bushing j becomes a source of vibration, and causes the cab d to generate a low-level sound (noise) while the vehicle is running.
［問題点を解決するための手段］
以上の問題点を鑑みて創案された本考案は、車
体フレームに取り付けられたブラケツトに、ブツ
シユを介してトーシヨンバーを挿通支持させ、該
トーシヨンバーの一端を車体フレームに固定させ
ると共に他端にレバを設け、該レバに生じる捩り
反力によつてレバに係合するキヤブをテイルトさ
せるキヤブテイルト用トーシヨンバーにおいて、
外部とブッシユ内面とを連通すべく上記ブラケツ
トおよびブツシユを貫通させてグリース供給用の
給脂通路を設けると共に、これらブツシユとトー
シヨンバーとの間に、ブツシユ内面或いはトーシ
ヨンバー外面に螺旋状の給脂溝を設け、且つ上記
ブラケツトに、ブツシユを覆うようにダストシー
ルを設けて構成されている。[Means for Solving the Problems] The present invention, which was created in view of the above problems, has a torsion bar inserted through and supported by a bracket attached to the vehicle body frame via a bushing, and one end of the torsion bar is connected to the vehicle body frame. In a torsion bar for cab tailing, which is fixed to a lever and has a lever at the other end, and tilts a cab engaged with the lever by a torsional reaction force generated on the lever,
A greasing passage for supplying grease is provided through the bracket and bushing to communicate the outside with the inner surface of the bushing, and a spiral greasing groove is provided on the inner surface of the bushing or the outer surface of the torsion bar between these bushings and the torsion bar. A dust seal is provided on the bracket to cover the bush.
［作用］
上記構成によれば、給脂通路を通じて外部から
ブツシユ内面に供給されたグリースは、ブツシユ
とトーシヨンバーとの間に形成された螺旋状の給
脂溝内に蓄積され、ブツシユとトーシヨンバーと
の回転状態を良好に保つ。[Function] According to the above configuration, the grease supplied from the outside to the inner surface of the bushing through the greasing passage is accumulated in the spiral greasing groove formed between the bushing and the torsion bar, and the grease is Keep the rotation in good condition.
ここで、給脂溝が螺旋状に形成されているもの
で、キヤブテイルト時に生じるトーシヨンバーの
正逆回転や、車両走行中におけるキヤブの上下振
動によるトーシヨンバーの微小回転に伴つて、給
脂溝内のグリースが軸方向に螺進移動されること
となる。よつて、給脂溝内のグリースが自動的に
ブツシユとトーシヨンバーと間の潤滑部に満遍な
く行き渡る。 Here, the greasing groove is formed in a spiral shape, and as the torsion bar rotates in the forward and reverse directions that occur when the cab tilts, or as the torsion bar slightly rotates due to the vertical vibration of the cab while the vehicle is running, the grease in the greasing groove is removed. will be spirally moved in the axial direction. Therefore, the grease in the greasing groove is automatically evenly distributed to the lubricated portion between the bush and the torsion bar.
また、ブユシユを覆うように設けられたダスト
シールは、外部の水分・塵埃等がブツシユとトー
シヨンバーとの摺動面に侵入し、摩耗を促進する
のを防止する。 Further, the dust seal provided to cover the bush prevents external moisture, dust, etc. from entering the sliding surface between the bush and the torsion bar and accelerating wear.
［実施例］
以下に本考案の好適一実施例を添付図面に従つ
て詳述する。[Embodiment] A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.
第１図に示すように、車体フレーム１の車幅方
向一側端部には、車幅方向に沿つて貫通孔２が形
成されたブラケツト３が固定される。他方トーシ
ヨンバー４は車幅方向に沿つて配設され、図示さ
れないその一端部が車体フレーム側に回転規制さ
れて固定されると共に、他端部５はブラケツト３
の貫通孔２に挿通される。このトーシヨンバー４
の他端部５には、キヤブ（図示せず）の下面部等
に係合されるレバ６がセレーシヨン７で結合され
てキヤブのテイルトに従つて捩り回転されるよう
になつている。このように回転されるトーシヨン
バー４の他端部５が挿通されるブラケツト３の貫
通孔２には、これに径方向外方から囲繞されて支
持させてスリーブ状の樹脂製のブツシユ１０が設
けられる。このブツシユ１０は、トーシヨンバー
４の外周面８をその周方向に囲繞して回転自在に
支持する内周面９を有している。そしてこのブツ
シユ１０の内周面９には、ブラケツト３を貫通さ
せて外部からグリースを供給するための給脂通路
１１が接続される。この給脂通路１１は具体的に
は、外部に露出されるブラケツト３の下面部１２
からブツシユ１０に亘つて鉛直上方に向けて貫通
形成された真直で且つ単一の貫通孔で構成され、
内周面９に対してその径方向外方から接続され
る。そしてこの給脂通路１１は、トーシヨンバー
４の外周面８に密接され外部から手の届かないブ
ツシユ１０の内周面９の中央部位置でブツシユ１
０を貫通してその内周面９に接続され、奥深くに
グリースを供給できるようになつている。また給
脂通路１１の入口側となるブラケツト３の下面部
１２には、給脂装置を接続するためのニツプル１
３が螺着される。 As shown in FIG. 1, a bracket 3 having a through hole 2 formed along the vehicle width direction is fixed to one end of the vehicle body frame 1 in the vehicle width direction. On the other hand, the torsion bar 4 is arranged along the vehicle width direction, and its one end (not shown) is fixed to the vehicle body frame side with rotation restriction, and the other end 5 is fixed to the bracket 3.
is inserted into the through hole 2 of. This torsion bar 4
A lever 6, which is engaged with the lower surface of a cab (not shown), is connected to the other end 5 by a serration 7, so that it can be twisted and rotated according to the tail of the cab. The through hole 2 of the bracket 3 through which the other end 5 of the torsion bar 4 rotated in this manner is inserted is provided with a sleeve-shaped resin bush 10 that is surrounded and supported from the outside in the radial direction. . The bush 10 has an inner circumferential surface 9 that circumferentially surrounds the outer circumferential surface 8 of the torsion bar 4 and rotatably supports it. A greasing passage 11 is connected to the inner circumferential surface 9 of the bush 10, passing through the bracket 3 and supplying grease from the outside. Specifically, this greasing passage 11 is connected to a lower surface portion 12 of the bracket 3 exposed to the outside.
Consisting of a straight and single through hole formed vertically upward from the bush 10 to the bush 10,
It is connected to the inner circumferential surface 9 from the outside in the radial direction. The greasing passage 11 is located in the center of the inner circumferential surface 9 of the bush 10, which is in close contact with the outer circumferential surface 8 of the torsion bar 4 and cannot be reached from the outside.
0 and is connected to its inner circumferential surface 9 so that grease can be supplied deep inside. Further, on the lower surface 12 of the bracket 3, which is the entrance side of the greasing passage 11, there is a nipple 1 for connecting a greasing device.
3 is screwed on.
他方殊に、ブツシユ１０の内周面９に支持され
るトーシヨンバー４の外周面８には、これら外周
面８と内周面９との密接部分全域に亘つてグリー
スの流れ乃至回りを良くして潤滑性を高めるため
に、トーシヨンバー４の軸方向に沿つてネジ様の
給脂溝１４が螺刻される。図示例にあつては、ト
ーシヨンバー４の外周面８に給脂溝１４が形成さ
れているが、トーシヨンバー４の外周面８を支持
するブツシユ１０の内周面９に給脂溝を形成する
ようにしても良いことは勿論である。 On the other hand, in particular, the outer circumferential surface 8 of the torsion bar 4 supported by the inner circumferential surface 9 of the bush 10 is coated with grease to improve the flow and circulation of the grease over the entire area where the outer circumferential surface 8 and the inner circumferential surface 9 are in close contact with each other. In order to improve lubricity, a screw-like greasing groove 14 is threaded along the axial direction of the torsion bar 4. In the illustrated example, the greasing groove 14 is formed on the outer circumferential surface 8 of the torsion bar 4, but the greasing groove is formed on the inner circumferential surface 9 of the bush 10 that supports the outer circumferential surface 8 of the torsion bar 4. Of course, it is good to do so.
更に、ブラケツト３には、トーシヨンバー４の
外周面８を支持するブツシユ１０の内周面９を囲
繞して外部から覆い、ダスト等の侵入を防止する
ダストシール１５が設けられる。図示するように
ダストシール１５は、トーシヨンバー４を貫通さ
せる孔部１６を有する円盤状に形成され、ブツシ
ユ１０が装着されるブラケツト３の一側壁１７の
表・裏面に、ブツシユ１０をその軸方向から挟み
込むように一対取り付けられる。そしてこれらダ
ストシール１５は、ブラケツト３の一側壁１７を
貫通して取り付けられてその内周面９が外部へ露
出されるブツシユ１０を覆い、ダストが外部から
ブツシユ１０の内周面９とトーシヨンバー４の外
周面８との間に侵入してブツシユ１０の摩耗を促
進するのを防止するように機能する。 Furthermore, the bracket 3 is provided with a dust seal 15 that surrounds and covers from the outside the inner circumferential surface 9 of the bushing 10 that supports the outer circumferential surface 8 of the torsion bar 4 to prevent dust from entering. As shown in the figure, the dust seal 15 is formed in a disc shape having a hole 16 through which the torsion bar 4 passes, and the dust seal 15 is sandwiched between the front and back surfaces of one side wall 17 of the bracket 3 on which the bush 10 is mounted from the axial direction thereof. A pair can be attached as shown. These dust seals 15 are attached to pass through one side wall 17 of the bracket 3 and cover the bushing 10 whose inner circumferential surface 9 is exposed to the outside, so that dust is removed from the outside between the inner circumferential surface 9 of the bushing 10 and the torsion bar 4. It functions to prevent the bushing from entering between the bushing and the outer circumferential surface 8 and accelerating wear of the bushing 10.
以上のような構成によれば、キヤブの上下振動
や、この上下振動に伴なつてくり返し振れ動くレ
バ６により生じるトーシヨンバー４の回転によつ
て摩耗されるブツシユ１０の内周面９に、必要に
応じて簡単にグリースを供給でき、その摩耗を抑
制することができる。 According to the above configuration, the inner circumferential surface 9 of the bush 10, which is worn due to the vertical vibration of the cab and the rotation of the torsion bar 4 caused by the lever 6 that swings repeatedly due to the vertical vibration, is coated as necessary. Grease can be easily supplied according to the requirements, and its wear can be suppressed.
従つて、ブツシユ１０の内周面９の摩耗に伴な
うテイルト操作性の劣化や振動・騒音の悪化を抑
止することができる。 Therefore, it is possible to suppress deterioration of tail operability and deterioration of vibration and noise due to wear of the inner circumferential surface 9 of the bush 10.
また、ブラケツト３、ブツシユ１０に単一の貫
通孔を形成する簡単な加工を施すのみで構成する
ことができ、容易且つ安価に採用することができ
る。 Further, it can be constructed by simply performing a simple process of forming a single through hole in the bracket 3 and the bush 10, and can be adopted easily and inexpensively.
また給脂溝１４を形成したことにより、潤滑性
を高めて効果的にブツシユ１０の摩耗を抑制でき
る。 Further, by forming the greasing groove 14, the lubricity can be improved and wear of the bush 10 can be effectively suppressed.
更にダストシール１５を設けたので、ブツシユ
１０の摩耗を助長するダストの侵入を防止でき、
この面からもブツシユ１０の摩耗を抑止できる。 Furthermore, since the dust seal 15 is provided, it is possible to prevent the intrusion of dust that promotes wear of the bush 10.
From this aspect as well, wear of the bush 10 can be suppressed.
［考案の効果］
以上要するに本考案によれば次のような優れた
効果を発揮する。[Effects of the invention] In summary, the present invention provides the following excellent effects.
給脂通路を通じて外部からブツシユ内面にグ
リースを供給し、そのグリースをブツシユとト
ーシヨンバーとの間の給脂溝に蓄積することに
より、それらの潤滑性を高めブツシユの早期摩
耗を抑止することができる。 By supplying grease to the inner surface of the bush from the outside through the greasing passage and accumulating the grease in the greasing groove between the bush and the torsion bar, it is possible to improve the lubricity of the bush and prevent premature wear of the bush.
よつて、ブツシユとトーシヨンバーとの間の
クリアランスが一定に保たれることとなり、ト
ーシヨンバーのセツトフオース即ちトーシヨン
バーの捩じり反力を長期間一定に保持すること
ができ、もつてブツシユ内周面の摩耗に伴うキ
ヤブテイルト操作性の劣化を抑制することがで
きる。 Therefore, the clearance between the bush and the torsion bar is kept constant, and the set force of the torsion bar, that is, the torsional reaction force of the torsion bar, can be kept constant for a long period of time, thereby reducing wear on the inner peripheral surface of the bush. It is possible to suppress the deterioration in cab tail operability caused by this.
給脂溝が螺旋状に形成されているので、キヤ
ブテイルト時に生じるトーシヨンバーの正逆回
転や、車両走行中におけるキヤブの上下振動に
よるトーシヨンバーの微小回転に伴つて給脂溝
内のグリースが軸方向に螺進移動され、自動的
にブツシユとトーシヨンバーとの間の潤滑部に
満遍なく行き渡らせることができる。 Since the greasing groove is formed in a spiral shape, the grease in the greasing groove spirals in the axial direction due to forward and reverse rotation of the torsion bar that occurs when the cab tilts, or minute rotations of the torsion bar due to vertical vibration of the cab while the vehicle is running. The lubricant is automatically and evenly spread over the lubricant between the bush and the torsion bar.
ブツシユを覆うようにダストシールを設けた
ので、外部の水分・塵埃等がブツシユとトーシ
ヨンバーとの摺動面に侵入し、摩耗が促進する
のを防止できる。 Since the dust seal is provided to cover the bush, it is possible to prevent external moisture, dust, etc. from entering the sliding surface between the bush and the torsion bar and accelerating wear.
第１図は本考案の好適一実施例を示す正面断面
図、第２図はテイルトキヤブを示す側面図、第３
図は従来例を示す正面断面図、第４図はブツシユ
の摩耗状態を示す側面図である。
図中、１は車体フレーム、３はブラケツト、４
はトーシヨンバー、８はその外周面、１０はブツ
シユ、９はその内周面、１１は給脂通路である。
FIG. 1 is a front sectional view showing a preferred embodiment of the present invention, FIG. 2 is a side view showing a tail cab, and FIG.
The figure is a front sectional view showing a conventional example, and FIG. 4 is a side view showing the state of wear of the bush. In the diagram, 1 is the vehicle frame, 3 is the bracket, and 4
8 is a torsion bar, 8 is its outer peripheral surface, 10 is a bush, 9 is its inner peripheral surface, and 11 is a greasing passage.
Claims (1)
ブツシユを介してトーシヨンバーを挿通支持さ
せ、該トーシヨンバーの一端を車体フレームに固
定させると共に他端にレバを設け、該レバに生じ
る捩り反力によつてレバに係合するキヤブをテイ
ルトさせるキヤブテイルト用トーシヨンバーにお
いて、 外部とブツシユ内面とを連通すべく上記ブラケ
ツトおよびブツシユを貫通させてグリース供給用
の給脂通路を設けると共に、これらブツシユとト
ーシヨンバーとの間に、ブツシユ内面或いはトー
シヨンバー外面に螺旋状の給脂溝を設け、且つ上
記ブラケツトに、ブツシユを覆うようにダストシ
ールを設けたことを特徴とするキヤブテイルト用
トーシヨンバーのグリース供給構造。[Scope of claim for utility model registration] A bracket attached to the vehicle body frame,
A torsion bar for cab tailing, in which a torsion bar is inserted and supported through a bush, one end of the torsion bar is fixed to the vehicle body frame, and a lever is provided at the other end, and the cab engaged with the lever is tilted by the torsional reaction force generated on the lever. In order to communicate between the outside and the inner surface of the bushing, a greasing passage for supplying grease is provided through the bracket and the bushing, and a spiral greasing passage is provided between the bushing and the torsion bar on the inner surface of the bushing or the outer surface of the torsion bar. A grease supply structure for a torsion bar for a cab tail, characterized in that a groove is provided and a dust seal is provided on the bracket to cover the bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986193077U JPH051508Y2 (en) | 1986-12-17 | 1986-12-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986193077U JPH051508Y2 (en) | 1986-12-17 | 1986-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6398286U JPS6398286U (en) | 1988-06-25 |
| JPH051508Y2 true JPH051508Y2 (en) | 1993-01-14 |
Family
ID=31148761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986193077U Expired - Lifetime JPH051508Y2 (en) | 1986-12-17 | 1986-12-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051508Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2900701B2 (en) * | 1992-05-20 | 1999-06-02 | 三菱自動車工業株式会社 | Torsion mounted cab mounting |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57109907U (en) * | 1980-12-27 | 1982-07-07 | ||
| JPH0131779Y2 (en) * | 1985-04-05 | 1989-09-29 |
-
1986
- 1986-12-17 JP JP1986193077U patent/JPH051508Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6398286U (en) | 1988-06-25 |
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