JPH0874980A - Belt-type continuously variable transmission - Google Patents
Belt-type continuously variable transmissionInfo
- Publication number
- JPH0874980A JPH0874980A JP21605994A JP21605994A JPH0874980A JP H0874980 A JPH0874980 A JP H0874980A JP 21605994 A JP21605994 A JP 21605994A JP 21605994 A JP21605994 A JP 21605994A JP H0874980 A JPH0874980 A JP H0874980A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- rotation speed
- transmission
- continuously variable
- type continuously
- 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.)
- Pending
Links
Landscapes
- Transmissions By Endless Flexible Members (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、無端弾性ベルトの周方
向に所定間隔で並べた多数の伝動片を金属製の連結具で
前記無端弾性ベルトに連結してなる伝動ベルトを、原動
側プーリと負荷側プーリとに巻回して構成したベルト式
無段変速装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive side pulley in which a plurality of transmission pieces arranged in a circumferential direction of an endless elastic belt are connected to the endless elastic belt by metal connecting members. The present invention relates to a belt type continuously variable transmission configured by being wound around a load side pulley.
【0002】[0002]
【従来の技術】ベルト式無段変速装置を変速制御する場
合等においては、伝動速度を検出する必要があり、その
検出手段の一例として、電磁式のピックアップセンサを
利用することが知られている。この電磁式のピックアッ
プセンサを利用する回転検出手段は、検出対象となる回
転体に磁性金属の突起やギヤ状部材を設けて、突起の先
端やギヤ歯先に近接対向させてピックアップセンサを固
定配備し、突起の通過に伴ってピックアップセンサから
発生する出力パルス数を設定時間単位で計数することで
回転体の回転速度を演算するものである。2. Description of the Related Art It is known to use a magnetic pickup sensor as an example of detecting means for detecting the transmission speed when controlling the speed change of a belt type continuously variable transmission. . The rotation detecting means using this electromagnetic pickup sensor is provided with a magnetic metal protrusion or a gear-like member provided on a rotating body to be detected, and the pickup sensor is fixedly arranged in close proximity to a tip of the protrusion or a gear tooth tip. Then, the rotation speed of the rotating body is calculated by counting the number of output pulses generated from the pickup sensor with the passage of the protrusion in set time units.
【0003】[0003]
【発明が解決しようとする課題】しかし、磁性金属の突
起を回転体に1個または複数個設ける形態では、突起の
検出ピッチが粗いために精度の高い検出を行い難く、ま
た、ギヤ状部材を設ける形態では、ギヤ歯を上記突起に
比較して多く設けることができるので、比較的精度の高
い検出が可能となるが、ギヤ状部材を別途加工して取り
付ける必要があって、コスト高になりがちであった。さ
らに、従来は、伝動ベルトより伝動上手がわでその伝動
速度の検出を行っているに止まっていたので、高負荷に
より伝動ベルトにスリップが生じていたり、伝動ベルト
が切れたりした場合に、伝動ベルトでスリップしている
ことやその伝動ベルトが切れたことを迅速に知ることの
できる手段がなかった。そのため、原動部の出力調節を
行ったり、原動部を停止させたりする等の迅速な対応が
難しいものであった。本発明は、上記実情に鑑みてなさ
れたものであって、伝動速度の検出手段を簡易に設置で
きるものでありながら、精度の良い検出を行えるととも
に、伝動ベルトのスリップや切断に対して迅速に対応で
きるベルト式無段変速装置の提供を目的とする。However, in the form in which one or a plurality of magnetic metal projections are provided on the rotating body, it is difficult to perform highly accurate detection because the detection pitch of the projections is rough, and the gear-like member is used. In the configuration provided, more gear teeth can be provided compared to the above-mentioned protrusions, so detection can be performed with relatively high accuracy, but it is necessary to separately process and attach the gear-like member, resulting in high cost. Tended to. Furthermore, in the past, the transmission belt was used to detect the transmission speed by using the transmission hand, so if the transmission belt slips due to a high load or the transmission belt is broken, the transmission belt will be transmitted. There was no way to quickly know that the belt was slipping or that the transmission belt was broken. Therefore, it has been difficult to quickly adjust the output of the driving part or stop the driving part. The present invention has been made in view of the above-mentioned circumstances, and is capable of easily installing a transmission speed detecting means, while performing accurate detection, and quickly for slipping or cutting of a transmission belt. It is an object of the present invention to provide a belt type continuously variable transmission that can be used.
【0004】[0004]
【課題を解決するための手段】本第1発明にかかるベル
ト式無段変速装置は、上記目的を達成するために、無端
弾性ベルトの周方向に所定間隔で並べた多数の伝動片を
金属製の連結具で前記無端弾性ベルトに連結してなる伝
動ベルトを、原動側プーリと負荷側プーリとに巻回して
構成したベルト式無段変速装置において、前記伝動ベル
トにおける前記連結具の通過を電磁的に検知するピック
アップセンサを、前記伝動ベルトの巻回経路に近接して
対向配備し、このピックアップセンサからの検出出力に
基づいて前記伝動ベルトの回動速度を演算するベルト回
動速度検出手段を備えてあることを特徴構成とする。本
第2発明にかかるベルト式無段変速装置は、上記目的を
達成するために、無端弾性ベルトの周方向に所定間隔で
並べた多数の伝動片を金属製の連結具で前記無端弾性ベ
ルトに連結してなる伝動ベルトを、原動側プーリと負荷
側プーリとに巻回して構成したベルト式無段変速装置に
おいて、前記伝動ベルトにおける前記連結具の通過を電
磁的に検知するピックアップセンサを、前記伝動ベルト
の巻回経路に近接して対向配備し、このピックアップセ
ンサからの検出出力に基づいて前記伝動ベルトの回動速
度を演算するベルト回動速度検出手段を備えるととも
に、前記原動側プーリの回動速度を検出する原動側回動
速度検出手段を備え、該原動側回動速度検出手段で検出
された回動速度を基準回動速度として、この基準回動速
度と前記ベルト回動速度検出手段で検出された伝動ベル
トの回動速度との差を演算する速度差検出手段を備えて
あることを特徴構成とする。かかる特徴構成による作用
・効果は次の通りである。In order to achieve the above object, a belt type continuously variable transmission according to the first aspect of the present invention comprises a plurality of metal transmission pieces arranged at predetermined intervals in the circumferential direction of an endless elastic belt. In a belt-type continuously variable transmission constituted by winding a transmission belt connected to the endless elastic belt with a connecting member around a driving side pulley and a load side pulley, the passage of the connecting member in the transmission belt is electromagnetically coupled. A belt rotation speed detecting means for detecting the rotation speed of the transmission belt based on a detection output from the pickup sensor. The feature is that it is provided. In order to achieve the above-mentioned object, the belt type continuously variable transmission according to the second aspect of the present invention includes a plurality of transmission pieces arranged at predetermined intervals in the circumferential direction of the endless elastic belt, which are connected to the endless elastic belt by a metallic connector. In a belt type continuously variable transmission constituted by winding a connected transmission belt around a drive side pulley and a load side pulley, a pickup sensor for electromagnetically detecting passage of the connecting tool in the transmission belt, A belt rotation speed detecting means for calculating the rotation speed of the transmission belt based on the detection output from the pickup sensor is provided and is opposed to the winding path of the transmission belt, and the rotation of the drive side pulley is provided. A driving-side rotation speed detecting means for detecting a moving speed is provided, and the rotation speed detected by the driving-side rotation speed detecting means is used as a reference rotation speed, and the reference rotation speed and the belt rotation speed are set. Wherein configuration that you have provided a speed difference detecting means for calculating a difference between the rotational speed of the detected transmission belt at a speed detecting means. The operation and effect of this characteristic configuration are as follows.
【0005】[0005]
【作用】即ち、第1発明によれば、この伝動ベルトの伝
動片を無端弾性体に連結する連結具を利用して、その連
結具をピックアップセンサで検出し、その検出に基づい
てベルト回動速度検出手段で伝動ベルトの回動速度を演
算することによって伝動ベルトの回転速度を検知するこ
とになる。よって、連結具は従来の検出用の突起に比べ
て小さいピッチで多数設けることができ、単位時間内の
パルス発生回数を多くして検出精度を高めることができ
る。また、ピックアップセンサに対する検知対象として
専用のギヤ状体を利用する必要もない。That is, according to the first aspect of the present invention, a coupling tool for coupling the transmission piece of the transmission belt to the endless elastic body is used, the coupling tool is detected by the pickup sensor, and the belt is rotated based on the detection. The rotation speed of the transmission belt is detected by calculating the rotation speed of the transmission belt by the speed detection means. Therefore, a large number of connecting tools can be provided at a pitch smaller than that of the conventional detection projections, and the number of pulses generated per unit time can be increased to improve the detection accuracy. Further, it is not necessary to use a dedicated gear-shaped body as a detection target for the pickup sensor.
【0006】第2発明によれば、基準回動速度として原
動プーリの回転速度を別途検出し、伝動ベルトの検出さ
れた回動速度と比較して速度差を算出するようにしてい
るから、伝動ベルトがスリップしているか否かを簡易に
検出することができるものとなっている。According to the second aspect of the invention, the rotation speed of the driving pulley is separately detected as the reference rotation speed, and the speed difference is calculated by comparing with the detected rotation speed of the transmission belt. It is possible to easily detect whether or not the belt is slipping.
【0007】[0007]
【発明の効果】従って、第1発明によれば、伝動ベルト
を構成する必須部品である連結具をピックアップセンサ
に対する検知対象片として利用するので、多数の検知対
象片を小さいピッチで多数配列できて精度の高い検出が
行えるものでありながら、検出専用のギア状体等の部材
を利用しなくても済み、コスト低減に効果的である。As described above, according to the first aspect of the present invention, since the connecting tool, which is an essential part of the transmission belt, is used as the detection target piece for the pickup sensor, a large number of detection target pieces can be arranged at a small pitch. Although it is possible to perform highly accurate detection, it is not necessary to use a member such as a gear-shaped body exclusively for detection, which is effective in cost reduction.
【0008】また、第2発明によれば、伝動ベルトがス
リップしているか否かを簡易に検出することができるか
ら、そのスリップの程度に対応して原動部の出力を変更
調節することで、スリップを解消することができ、良好
な動力伝達を行うことができる。Further, according to the second aspect of the present invention, it is possible to easily detect whether or not the transmission belt is slipping. Therefore, by changing and adjusting the output of the driving portion according to the degree of the slip, Slip can be eliminated and good power transmission can be performed.
【0009】さらに、第1発明及び第2発明に共通し
て、伝動ベルトが切れたり、あるいは原動側プーリや負
荷側プーリから外れたりした場合は、ピックアップセン
サでの検出がなされなくなるので、ただちにその異常を
検知でき、警報を発したり、あるいは原動部を停止した
りする等の対応を迅速に行える利点がある。Further, in common with the first and second inventions, when the transmission belt is cut off or comes off from the driving side pulley and the load side pulley, the pickup sensor no longer detects it. There is an advantage that an abnormality can be detected, an alarm can be issued, or the driving unit can be stopped quickly.
【0010】[0010]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図1に、本願発明のベルト式無段変速装置1を装
備した乗用型田植機を示している。この乗用型田植機
は、左右一対の前輪2,2及び後輪3,3で走行可能に
支持された車体4に、原動部としてのエンジン5、ベル
ト式無段変速装置1、ミッションケース6を装備してい
るとともに、車体4の後端部にリンク機構7を介して昇
降自在に苗植付装置8を装着して構成している。前記ミ
ッションケース6からの出力動力で前輪2,2、後輪
3,3及び苗植付装置8を駆動するようにしている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a riding type rice transplanter equipped with a belt type continuously variable transmission 1 of the present invention. In this riding type rice transplanter, an engine 5, a belt-type continuously variable transmission 1, and a mission case 6 as a driving part are mounted on a vehicle body 4 supported by a pair of left and right front wheels 2 and 2 and rear wheels 3 and 3 so that they can travel. In addition to being equipped, a seedling planting device 8 is attached to the rear end of the vehicle body 4 via a link mechanism 7 so as to be able to move up and down. The front wheels 2 and 2, the rear wheels 3 and 3 and the seedling planting device 8 are driven by the output power from the mission case 6.
【0011】図2に示すように、ベルト式無段変速装置
1は、エンジン5の出力軸5aに取り付けた原動側プー
リ9と、ミッションケース6の入力軸6aに取り付けた
負荷側プーリ10とにわたって伝動ベルト11を巻き掛
けて構成している。この伝動ベルト11は、図2及び図
3に示すように、薄い帯状の無端弾性ベルト12に、ベ
ルト横幅方向に沿う係止突条13を周方向一定ピッチで
形成し、各係止突条13毎に伝動片Aを取り付けた構造
となっている。この伝動片Aは、直方体状の内側伝動片
14と外側伝動片15とを連結具としての金属製のビス
16で連結固定して構成している。As shown in FIG. 2, the belt type continuously variable transmission 1 extends over a driving pulley 9 mounted on an output shaft 5a of an engine 5 and a load pulley 10 mounted on an input shaft 6a of a transmission case 6. It is configured by winding the transmission belt 11. As shown in FIGS. 2 and 3, the transmission belt 11 includes a thin strip-shaped endless elastic belt 12 formed with locking projections 13 along the lateral direction of the belt at a constant circumferential pitch. It has a structure in which a transmission piece A is attached to each. The transmission piece A is configured by connecting and fixing a rectangular parallelepiped inner transmission piece 14 and an outer transmission piece 15 with a metal screw 16 as a connecting tool.
【0012】原動側プーリ9は、左右一対のプーリ部を
一体に構成しており、負荷側プーリ10は、左右一対の
プーリ部の一方を固定割りプーリ10a、他方を入力軸
6aの軸心方向に沿ってスライド自在な可動割りプーリ
10bに構成しており、この可動割りプーリ10bを固
定割りプーリ10aに近接するように弾性付勢するスプ
リング17を設けている。そして、伝動ベルト11の巻
き掛け張力を変更することで、前記固定割りプーリ10
aと可動割りプーリ10bとの間隔を変更し、ひいては
負荷側プーリ10に対する巻き掛け径を変えることによ
り入力軸6aの回動速度が無段階に変速されるように、
前記伝動ベルト11の巻き掛け張力を変更調節するテン
ションアーム18を電動シリンダ19で揺動駆動するべ
く設けている。この電動シリンダ19は制御装置20か
らの制御信号により伸縮駆動される。The driving pulley 9 has a pair of left and right pulley portions integrally formed, and the load pulley 10 has a pair of left and right pulley portions, one of which is a fixed split pulley 10a and the other of which is in the axial direction of the input shaft 6a. A movable split pulley 10b that is slidable along the movable split pulley 10b is provided, and a spring 17 that elastically biases the movable split pulley 10b so as to approach the fixed split pulley 10a is provided. Then, the fixed split pulley 10 is changed by changing the winding tension of the transmission belt 11.
By changing the distance between a and the movable split pulley 10b, and by changing the winding diameter with respect to the load side pulley 10, the rotation speed of the input shaft 6a is continuously changed.
A tension arm 18 for changing and adjusting the winding tension of the transmission belt 11 is provided so as to be swingably driven by an electric cylinder 19. The electric cylinder 19 is expanded / contracted by a control signal from the control device 20.
【0013】図2に示すように、出力軸5aの原動側プ
ーリ9に隣接した箇所には、出力軸5aと一体回転する
よう磁性金属からなる突起片21を連設しているととも
に、この突起片21の通過を電磁的に検出する第1ピッ
クアップセンサ22を近接して対向配設している。そし
て、原動側プーリ9に巻き掛けた前記伝動ベルト11の
原動側プーリ9に対する巻回経路において、各伝動片A
を無端弾性ベルト12に連結する磁性金属製のビス16
の通過を検出するピックアップセンサとしての第2ピッ
クアップセンサ23を、ビス頭部の移動軌跡に近接して
対向配設している。これらセンサ22,23の検出信号
は前記制御装置20に入力される。As shown in FIG. 2, a projection piece 21 made of magnetic metal is continuously provided at a position adjacent to the driving side pulley 9 of the output shaft 5a so as to rotate integrally with the output shaft 5a. A first pickup sensor 22 that electromagnetically detects the passage of the piece 21 is disposed in close proximity to and opposite to the first pickup sensor 22. Then, in the winding path of the transmission belt 11 wound around the driving side pulley 9 with respect to the driving side pulley 9, each transmission piece A is
16 made of magnetic metal for connecting the endless elastic belt 12
A second pickup sensor 23 as a pickup sensor for detecting the passage of the head is disposed so as to face the movement locus of the screw head and face it. Detection signals of these sensors 22 and 23 are input to the control device 20.
【0014】そして、制御装置20には、第1ピックア
ップセンサ22からの検出信号が入力されて、単位時間
当たりの出力軸5aひいては原動部プーリ9の回動速度
を演算する原動側回動速度検出手段24と、第2ピック
アップセンサ23からの検出信号が入力されて、単位時
間当たりの伝動ベルト11の回動速度を演算するベルト
回動速度検出手段25とを設けている。さらに、前記原
動側回動速度検出手段24の算出結果と、前記ベルト回
動速度検出手段25の算出結果とを入力して比較してそ
の互いの回動速度の差を演算する速度差検出手段26を
設けている。その速度差検出手段26で得られた回動速
度の差が所定値以上であると、負荷が大きいと判断し
て、ベルト式無段変速装置1を減速がわに操作するよう
に、前記電動シリンダ19を駆動する信号を出力する変
速制御手段27を設けている。さらに、前記第1ピック
アップセンサ22からの検出信号と、第2ピックアップ
センサ23からの検出信号とがアンド回路28に入力さ
れ、このアンド回路28からの出力信号が2値信号のう
ちH信号かL信号かを判別するベルト異常判別手段29
を設けている。すなわち、このベルト異常判別手段は、
ベルト式無段変速装置1で伝動がなされているときに、
通常第1ピックアップセンサ22で突起片21を検出し
ている時間T内に第2ピックアップセンサ23でビス1
6を検出できるようになっており、その時間T内にアン
ド回路28からはH信号が出力されるから、出力軸5a
の回転周期より大の予め設定された所定時間以上継続し
てアンド回路28からH信号が入力されない場合に、伝
動ベルト11が切断された状態か、あるいは原動側プー
リ9から外れた状態の異常状態となっていると判断する
のである。ベルト異常判別手段29が異常と判別する
と、その判別結果をオペレータへ報知するために、操縦
部パネル31にランプ30で警報表示したり、あるいは
音声で報知するようにしている。Then, the detection signal from the first pickup sensor 22 is input to the control device 20, and the rotation speed detection on the driving side for calculating the rotation speed of the output shaft 5a and thus the driving portion pulley 9 per unit time. Means 24 and belt rotation speed detection means 25, which receives the detection signal from the second pickup sensor 23 and calculates the rotation speed of the transmission belt 11 per unit time, are provided. Further, the speed difference detecting means for inputting and comparing the calculation result of the driving side rotation speed detecting means 24 and the calculation result of the belt rotation speed detecting means 25 to calculate the difference between the rotation speeds thereof. 26 is provided. When the difference between the rotational speeds obtained by the speed difference detecting means 26 is equal to or greater than a predetermined value, it is determined that the load is large, and the belt type continuously variable transmission 1 is operated so that the deceleration operation is performed. A shift control means 27 for outputting a signal for driving the cylinder 19 is provided. Further, the detection signal from the first pickup sensor 22 and the detection signal from the second pickup sensor 23 are input to the AND circuit 28, and the output signal from the AND circuit 28 is an H signal or an L signal among the binary signals. Belt abnormality determining means 29 for determining whether the signal is a signal
Is provided. That is, this belt abnormality determination means is
When power is being transmitted by the belt-type continuously variable transmission 1,
Normally, within the time T during which the first pickup sensor 22 detects the protruding piece 21, the second pickup sensor 23 sets screws 1
6 can be detected, and since the H signal is output from the AND circuit 28 within the time T, the output shaft 5a
If the H signal is not input from the AND circuit 28 continuously for a predetermined time longer than the rotation cycle of, the transmission belt 11 is in a disconnected state or is in an abnormal state in which it is disengaged from the driving pulley 9. It is judged that it has become. When the belt abnormality determination means 29 determines that the abnormality is present, an alarm is displayed on the control panel 31 with a lamp 30 or an audio notification is provided to inform the operator of the determination result.
【0015】〔別実施例〕 上記実施例では、エンジン5の出力軸5aの回動速度
も検出できる第2ピックアップセンサ23も備えたもの
を示したが、第1ピックアップセンサ22のみ設けて伝
動速度を検出する構成でも良い。 上記実施例では、原動側プーリを割りプーリ構造でな
いものを示したが、上記実施例の負荷側プーリと同様に
原動側プーリを割りプーリ構造にしても良い。この場
合、ピックアップセンサは、変速操作に応じて原動側プ
ーリの径方向に適宜移動して、伝動ベルトとの間隔を常
時適正に維持されるようにする。[Other Embodiment] In the above embodiment, the second pickup sensor 23 which can detect the rotation speed of the output shaft 5a of the engine 5 is also provided, but only the first pickup sensor 22 is provided and the transmission speed is increased. May be detected. In the above-described embodiment, the driving pulley is not a split pulley structure, but the driving pulley may have a split pulley structure as in the load pulley of the above embodiment. In this case, the pickup sensor appropriately moves in the radial direction of the driving pulley in accordance with the shift operation so that the distance between the pickup sensor and the transmission belt is always maintained properly.
【0016】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.
【図1】乗用型田植機を示す全体側面図FIG. 1 is an overall side view showing a riding type rice transplanter.
【図2】ベルト式無段変速装置及び制御装置等を示す概
略説明図FIG. 2 is a schematic explanatory view showing a belt type continuously variable transmission, a control device and the like.
【図3】伝動ベルトの一部を示す分解斜視図FIG. 3 is an exploded perspective view showing a part of a transmission belt.
9 原動側プーリ 10 負荷側プーリ 11 伝動ベルト 12 無端弾性ベルト 16 連結具 23 ピックアップセンサ 24 原動側回動速度検出手段 25 ベルト回動速度検出手段 26 速度差検出手段 A 伝動片 9 Drive side pulley 10 Load side pulley 11 Transmission belt 12 Endless elastic belt 16 Connection tool 23 Pickup sensor 24 Drive side rotation speed detection means 25 Belt rotation speed detection means 26 Speed difference detection means A Transmission piece
Claims (2)
間隔で並べた多数の伝動片(A)を金属製の連結具(1
6)で前記無端弾性ベルト(12)に連結してなる伝動
ベルト(11)を、原動側プーリ(9)と負荷側プーリ
(10)とに巻回して構成したベルト式無段変速装置に
おいて、 前記伝動ベルト(11)における前記連結具(12)の
通過を電磁的に検知するピックアップセンサ(23)
を、前記伝動ベルト(11)の巻回経路に近接して対向
配備し、このピックアップセンサ(23)からの検出出
力に基づいて前記伝動ベルト(11)の回動速度を演算
するベルト回動速度検出手段(25)を備えてあるベル
ト式無段変速装置。1. A metal connector (1) comprising a large number of transmission pieces (A) arranged at a predetermined interval in the circumferential direction of an endless elastic belt (12).
In a belt type continuously variable transmission constituted by winding a transmission belt (11) connected to the endless elastic belt (12) around a driving pulley (9) and a load pulley (10) in 6), A pickup sensor (23) for electromagnetically detecting passage of the connecting tool (12) in the transmission belt (11).
A belt rotation speed that is arranged close to the winding path of the transmission belt (11) and is opposed thereto, and calculates the rotation speed of the transmission belt (11) based on the detection output from the pickup sensor (23). A belt-type continuously variable transmission equipped with detection means (25).
間隔で並べた多数の伝動片(A)を金属製の連結具(1
6)で前記無端弾性ベルト(12)に連結してなる伝動
ベルト(11)を、原動側プーリ(9)と負荷側プーリ
(10)とに巻回して構成したベルト式無段変速装置に
おいて、 前記伝動ベルト(11)における前記連結具(12)の
通過を電磁的に検知するピックアップセンサ(23)
を、前記伝動ベルト(11)の巻回経路に近接して対向
配備し、このピックアップセンサ(23)からの検出出
力に基づいて前記伝動ベルト(11)の回動速度を演算
するベルト回動速度検出手段(25)を備えるととも
に、前記原動側プーリ(9)の回動速度を検出する原動
側回動速度検出手段(24)を備え、該原動側回動速度
検出手段(24)で検出された回動速度を基準回動速度
として、この基準回動速度と前記ベルト回動速度検出手
段(25)で検出された伝動ベルト(11)の回動速度
との差を演算する速度差検出手段(26)を備えてある
ベルト式無段変速装置。2. A connecting member (1) made of metal, comprising a large number of transmission pieces (A) arranged at predetermined intervals in the circumferential direction of an endless elastic belt (12).
In a belt type continuously variable transmission constituted by winding a transmission belt (11) connected to the endless elastic belt (12) around a driving pulley (9) and a load pulley (10) in 6), A pickup sensor (23) for electromagnetically detecting passage of the connecting tool (12) in the transmission belt (11).
A belt rotation speed that is arranged close to the winding path of the transmission belt (11) and is opposed thereto, and calculates the rotation speed of the transmission belt (11) based on the detection output from the pickup sensor (23). In addition to the detection means (25), a driving-side rotation speed detection means (24) for detecting the rotation speed of the driving-side pulley (9) is provided, and the driving-side rotation speed detection means (24) detects the rotation speed. Using the rotation speed as a reference rotation speed, a speed difference detecting means for calculating a difference between the reference rotation speed and the rotation speed of the transmission belt (11) detected by the belt rotation speed detecting means (25). A belt type continuously variable transmission including (26).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21605994A JPH0874980A (en) | 1994-09-09 | 1994-09-09 | Belt-type continuously variable transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21605994A JPH0874980A (en) | 1994-09-09 | 1994-09-09 | Belt-type continuously variable transmission |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0874980A true JPH0874980A (en) | 1996-03-19 |
Family
ID=16682637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21605994A Pending JPH0874980A (en) | 1994-09-09 | 1994-09-09 | Belt-type continuously variable transmission |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0874980A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5989472A (en) * | 1982-11-15 | 1984-05-23 | Dainichi Seika Kogyo Kk | Photoconductive material |
JP2008057982A (en) * | 2006-08-29 | 2008-03-13 | Honda Motor Co Ltd | Belt damage detector of continuously variable transmission |
WO2014098312A1 (en) * | 2012-12-18 | 2014-06-26 | 한국생산기술연구원 | Continuously variable transmission capable of detecting malfunction occurrence location |
-
1994
- 1994-09-09 JP JP21605994A patent/JPH0874980A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5989472A (en) * | 1982-11-15 | 1984-05-23 | Dainichi Seika Kogyo Kk | Photoconductive material |
JPS6320029B2 (en) * | 1982-11-15 | 1988-04-26 | Dainichi Seika Kogyo Kk | |
JP2008057982A (en) * | 2006-08-29 | 2008-03-13 | Honda Motor Co Ltd | Belt damage detector of continuously variable transmission |
WO2014098312A1 (en) * | 2012-12-18 | 2014-06-26 | 한국생산기술연구원 | Continuously variable transmission capable of detecting malfunction occurrence location |
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