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1. 发明专利

JPH0220210A FRAME STRUCTURE IN RIDING TYPE LAWN MOWER 失效
公开(公告)号：JPH0220210A
公开(公告)日：1990-01-23
申请号：JP16947188
申请日：1988-07-07
申请人： KUBOTA LTD
发明人： HASEGAWA SHIGEKAZU , OTA YOSHIMI , FUKUI SATORU
IPC分类号： A01D34/64 , A01D34/68
摘要： PURPOSE:To provide the title frame structure so designed that the intermediate part of the front and rear of a machine body frame supported by both the front and rear wheels is formed in an expanded manner outward, and a mower is inserted into a midway of this frame, thereby preventing said mower from being broken. CONSTITUTION:A machine frame 3 is made of iron pipe, jointing itself in a loop fashion for higher mechanical strength. The intermediate part of the front and rear of this frame 3 is formed in an expanded manner outward, and a mower is inserted into a midway of this expanded part 3a. Said expanded part 3a is formed in an arc manner along the circumferential surface of the mower, and with this expanded part 3a, the side of the mower is guarded from external objects.

2. 发明专利

JPS6338578B2 失效
公开(公告)号：JPS6338578B2
公开(公告)日：1988-08-01
申请号：JP19951582
申请日：1982-11-13
申请人： KUBOTA LTD
发明人： FUKUI SATORU
IPC分类号： B60K20/00 , F16H61/02 , F16H61/08 , F16H61/30 , F16H63/00 , F16H63/02 , F16H63/24 , F16H63/30 , F16H63/32 , F16H63/34

3. 发明专利

JPS6331022B2 失效
公开(公告)号：JPS6331022B2
公开(公告)日：1988-06-22
申请号：JP11955281
申请日：1981-07-29
申请人： KUBOTA LTD
发明人： FUKUI SATORU
IPC分类号： F16H63/12 , F16H63/24 , F16H63/30

4. 发明专利

JPS6049156A HYDRAULIC OPERATION TYPE TRAVEL SPEED CHANGER 失效
公开(公告)号：JPS6049156A
公开(公告)日：1985-03-18
申请号：JP15526083
申请日：1983-08-24
申请人： KUBOTA LTD
发明人： FUKUI SATORU , OOTA YOSHIMI , OKITA NAOKI
IPC分类号： B60K20/00 , B60K17/10 , F16H61/00 , F16H61/06 , F16H61/28 , F16H63/02 , F16H63/12 , F16H63/24
摘要： PURPOSE:To enable a speed change at a high speed by providing an accumulator of the captioned speed changer so as to discharge the pressure oil to the oil passage portion upstream speed change control valves during the speed change operation and to store the pressure oil fed to transmission clutch operation hydraulic cylinders. CONSTITUTION:In a travel speed changer provided with multiple gear speed changers and transmission clutches in series on a travel transmission system, speed change control valves V1, V2 for speed change shifter operation hydraulic cylinders of individual gear speed changers and clutch control valves S1, T1-T3 for transmission clutch operation cylinders are provided. Individual valves S1, T1-T3 are automatically transferred during the speed change operation so that they are transferred to the operation position only under the transmission condition of the gear speed changers. An accumulator A is provided so as to discharge the pressure oil to the oil passage portion upstream the control valves V1-V2 during the speed change operation and to store the pressure oil fed from the valves S1, T1-T3 to the transmission clutch operation hydraulic cylinders.

5. 发明专利

JPS6034556A HYDRAURIC TRANSMISSION GEAR 失效
公开(公告)号：JPS6034556A
公开(公告)日：1985-02-22
申请号：JP14415583
申请日：1983-08-05
申请人： KUBOTA LTD
发明人： FUKUI SATORU , OOTA YOSHIMI , OKITA NAOKI
IPC分类号： B60K20/00 , B60K17/10 , F16H61/30 , F16H63/00 , F16H63/02 , F16H63/12 , F16H63/30
摘要： PURPOSE:To suppress the rising of oil temperature by a method wherein the first relief valve is provided at the upstream side of an operating valve and the second relief valve, which is set with a pressure lower than that of the first relief valve, is provided between a clutch operating valve and a clutch operating actuator. CONSTITUTION:The first relief valve 32 is connected at the upstream side of a main speed change valve 21 and a forward and reverse changeover valve 28, and at the same time the second relief valve 35, thereof the relief pressure is smaller than that of the first relief valve 32, is provided at a oil passage 34 connecting the operating valve 29 and a clutch cylinder 4a. Herewith, the relief pressure of the surplus oil while transmission can be maintained low. Accordingly, the rising of the oil temperature owing to the transmission can be supressed to the utmost, moreover enabling the actuator for shifting the transmission gear as small as possible, and the whole transmission gear compact.

6. 发明专利

JPS59175652A Planetary gear device 失效
标题翻译：行星齿轮装置
公开(公告)号：JPS59175652A
公开(公告)日：1984-10-04
申请号：JP4770483
申请日：1983-03-22
申请人： Kubota Ltd
发明人： FUKUI SATORU
IPC分类号： F16H3/46
摘要： PURPOSE: To make a speed increasable as much speedier as about two times than that at a beeline, in time of turning, by setting a sun gear shaft and a first planet gear down to an input part and an output part respectively, while making a first internal gear rotatable together with a carrier for a second planet gear as one body, and restricting rotation of the second internal gear.
CONSTITUTION: An output shaft 8, or a sun gear shaft of a planetary gear 9 is coupled with a driving shaft 44 via a coupling 43, while the shaft 44 is coupled with a front wheel driving gear. The power transmitted to a gear 7 of a power takeoff device 1 from a gear 6 of a running shaft is connected to a high speed hydraulic clutch 22 by select operation of a solenoid valve 38 in time of turning whereby a low speed hydraulic clutch 29 is disconnected. With this constitution, the gear 7 freely comes to relative rotation with an output shaft 8, and rotation of a second internal gear 15 is restricted and comes to a stop, while a planetary gear 9 functions instead so that the output shaft 8 is increased in it speed as much speedier as about two times than that at a beeline, in time of turning.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：使转向时的速度可以比直线大约两倍，通过将太阳齿轮轴和第一行星齿轮分别设置到输入部分和输出部分，使速度提高得更快，同时使第一内齿轮与用于第二行星齿轮的载体一起旋转作为一体，并限制第二内齿轮的旋转。构成：输出轴8或行星齿轮9的太阳齿轮轴通过联轴器43与驱动轴44联接，而轴44与前轮驱动齿轮联接。从行驶轴的齿轮6传递到动力输出装置1的齿轮7的动力通过电磁阀38在转向时的选择操作而连接到高速液压离合器22，由此低速液压离合器29为断开。利用这种构造，齿轮7与输出轴8自由地相对旋转，并且第二内齿轮15的旋转受到限制并停止，而行星齿轮9的作用相反，输出轴8增加在转弯的时候，速度比速度快两倍。

7. 发明专利

JPS5983852A DRIVING DEVICE 失效
公开(公告)号：JPS5983852A
公开(公告)日：1984-05-15
申请号：JP19440082
申请日：1982-11-04
申请人： KUBOTA LTD
发明人： HASEGAWA SHIGEKAZU , FUKUI SATORU
IPC分类号： F16H3/02 , B60K17/02 , B60K17/04 , B60K17/08 , B60K17/28 , F16H3/00 , F16H3/085 , F16H37/04 , F16H61/70 , F16H63/30
摘要： PURPOSE:To miniaturize a shift device, by composing it in a way of installing a main clutch at the transmission lower side of a power transmission interlocked with an engine. CONSTITUTION:The power of an engine E is made up so as to be transmitted to a main speed change gear mechanism 1, a hydraulic multiple disc clutch 2, an auxiliary speed change gear mechanism 3 and a super reduction gear mechanism 4 in order as their setup, which all are installed in a transmission case M. Also inside the transmission case M, power out of the upper side of the main speed change gear mechanism 1 is made up so as to be transmitted to an operating gear device and a driving PTO shaft 12 via a PTO speed change gear mechanism 10 and a hydraulic multiple disc clutch 11 as their setup. Then, each of syn chromesh type shift devices 7a and 7b is solidly coupled together and installed in this PTO system driven shaft S7 whereby made up so as to perform a four-speed transmission by means of a combined shift mechanism. With this, it comes into being shiftable with small shift force, and not only a shift operating hydraulic mechanism but the transmission case can be miniaturized.

8. 发明专利

JPS58174022A CHANGEOVER DEVICE FOR ADVANCE AND BACKING OF SERVICE CAR 失效
公开(公告)号：JPS58174022A
公开(公告)日：1983-10-13
申请号：JP5636182
申请日：1982-04-05
申请人： KUBOTA LTD
发明人： FUKUI SATORU
IPC分类号： B62D49/00 , B60K20/00 , B60K23/00 , F16H61/30 , F16H63/02 , F16H63/12 , F16H63/24 , F16H63/30
摘要： PURPOSE:To release a hydraulic clutch in front of forward and reverse changeover structure at a neutral position, and to change over advance and backing without a shock by setting up an operating valve closing an oil-feed path at the neutral position to the oil-feed path for the hydraulic clutch. CONSTITUTION:The clutches 13, 14 are operated by oil pressure from the oil- feed path 108, and mounted in front of the forward and reverse changeover structure. A variable speed gear is changed over by changeover valves 90-93 combining actuators, and the forward and reverse changeover structure is similarly operated by a changeover valve 94 combining an actuator. The operating valve 98 supplies the actuator with oil pressure while also supplying the clutches 13, 14 with oil pressure through the oil-feed path 108. The clutches 13, 14 are also released because oil pressure is not supplied at a neutral position of the operating valve 98, and a shock is not generated when forward and reverse revlution are changed over because the revolution of a shaft system drops.

9. 发明专利

JPS5521735A HEIGHT DETECTOR IN TRAVELLING FARM MACHINE 失效
公开(公告)号：JPS5521735A
公开(公告)日：1980-02-16
申请号：JP9394178
申请日：1978-07-31
申请人： KUBOTA LTD
发明人： FUKUI SATORU
IPC分类号： A01B63/00 , A01B63/10 , A01B63/114

10. 发明专利

JPH02168070A TRANSMISSION GEAR 失效
公开(公告)号：JPH02168070A
公开(公告)日：1990-06-28
申请号：JP32463188
申请日：1988-12-21
申请人： KUBOTA LTD
发明人： FUKUI SATORU
IPC分类号： F16H61/40 , F16H61/4157
摘要： PURPOSE:To prevent incurring of a power loss during running on a flat ground and to effect reasonable control of a speed increase during the occurrence of a speed increase due to an external factor by a method wherein a load is exerted on the oil passage of a hydraulic pump based on a change in a direction in which the rotation phase of a second shaft is further increased in a speed than that of a first shaft, and a brake force is exerted on the second shaft. CONSTITUTION:When a power in a speed increase direction is not exerted through a running device 3, e.g. a time when a car body is run at a flat ground surface, a pressure from a pilot pump 14 is communicated to a drain oil passage 15, formed in a second shaft 5, through a pilot oil passage 7. As a result, a switching valve 12 feeds working oil from a hydraulic pump 10 to the tank side. When a car body runs down on an inclined ground surface, when a power in a speed increase direction is exerted on the second shaft 5 through running device 3, a pilot oil passage 7 is closed along with a relative change between first and second shafts 4 and 5. Therefore, the switching valve 12 feeds working oil, fed from the hydraulic pump 10, to a relief valve 13 and the load of the hydraulic pump 10 is exerted as a brake forced on the second shaft 5.

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