Honda Giken Kogyo Kabushiki Kaisha

Akio Kawano

Kenji Honma

Takeshi Kawaguchi

Eiji Yamamoto

Ken Yamaguchi

Tsutomu Sakuma

Masakatsu Shimizu

Keiji Ono

Toshio Yamagiwa

Tomoyuki Harada

Kentaro Kato

Kazuhiro Iwai

Keizi Ono

Kenzi Honma

An object of the present invention is to provide a three-dimensional CAD-system for adding data about a drafting direction of a die to three-dimensional data about the part to be formed by that die, and a cost calculation system for calculating the cost of the part based on that drafting direction data. A three-dimensional model generation unit of a CAD system generates: a three-dimensional shaped model of a given part based on information coming from an input operation unit. A drafting direction data setting unit establishes drafting direction data when the input operation unit is operated to designate the drafting direction of the die for press molding, injection molding or the like of the part in question. A projected area calculation unit calculates a projected area S of the part on a plane perpendicular to the drafting direction of the applicable die on the basis of the three-dimensional model of that part and the drafting direction data involved. A depth calculation unit calculates a depth D of the part in the relevant drafting direction.

Three-dimensional CAD system and part cost calculation system

A development department stores physical characteristic data concerning a product to be manufactured, such as shape and CAD data, in a database. Cost factor data are provided from a plurality of potential makers of the product. The cost factor data is stored in a database. Manufacturing costs are calculated for the respective makers based on the cost factor data, and then displayed. The provided information, the cost factor data stored in the databases, and the estimated manufacturing costs can be browsed through a network. Further, the cost factor data stored in the databases can be updated by the makers through the network.

Method and apparatus for estimating product cost

An air pressure sensor fitting structure is provided for a vehicle wheel for fitting an air pressure sensor for detecting the air pressure of a tube of a vehicle wheel. The tube is provided with a pipe-shaped air valve and a tire covering the tube in the condition where the tube is fitted along a rim of a wheel. The air valve penetrates through the rim. A through-hole penetrating through a pipe of the air pressure valve is provided at a portion of the air pressure valve projecting from the rim. The air pressure sensor is fitted to the air pressure valve so as to cover the through-hole. The air pressure sensor can be fitted to a tubeless tire and a tubed tire while using the same structure.

Air pressure sensor fitting structure for vehicle wheel

Motorcycles having front and rear swing arm assemblies as the suspension members therefor are employed with lower frame structures incorporating the power unit as a structural element thereof. The lower frame structures are shown to include brackets mounted to the power unit itself, separate loop frame members and an under channel member. Upper frames are shown to be associated with the lower frames. The upper frames do not support the suspension systems but do support motorcycle equipment such a fuel tanks, air cleaners and the like.

Motorcycle

A motorcycle having a swing-arm front suspension mechanism includes front and rear wheels, an engine disposed between the front and rear wheels and having an engine block, a front wheel steering knuckle disposed on one side of the front wheel and by which an axle of the front wheel is rotatably supported, an upper swing arm having a front end pivotally coupled to the knuckle and a rear end pivotally coupled to an upper portion of the engine block, the upper swing arm extending between the knuckle and the engine block, a lower swing arm having a front end pivotally coupled to the knuckle and at least one rear end pivotally coupled to a lower portion of the engine block, the lower swing arm extending between the knuckle and the engine block, and a damper having an upper end pivotally coupled to the engine block intermediate between two positions where the rear ends of the upper and lower swing arms are pivotally coupled to the engine block, and a lower end pivotally coupled to a base of the lower swing arm. The motorcylce also includes an arm mechanism disposed below the lower swing arm, the lower end of the damper being pivotally coupled by the arm mechanism to the base of the lower swing arm.

A front suspension for a vehicle having a pair of swing arms and steering arm. The swing arms are mounted to the steering arm in a manner such that savings in weight and material are realized. The swing arms are pivotally mounted forwardly at upper and lower locations on said steering arm and pivotally mounted rearwardly on the vehicle, said forward mounting location of said upper swing arm being outside the circumference of the front wheel and said forward mounting location of said lower swing arm being above and rearward of the front wheel axle, said upper and lower swing arms extending upwardly from said rearward mounting locations. Accordingly, the front wheel can take a wide steering angle and the swing arm does not become too heavy.

Front suspension for a vehicle

A motorcycle [1; 101; 201] includes an engine unit [2] disposed centrally in the motorcycle [1; 101; 201], front swing arms [14, 18] having rear ends operatively connected to the engine unit [2] for vertical swinging movement, with a steering arm [26] which supports a front wheel [15] being attached to the front ends of the front swing arms [14, 18], and a rear swing arm [33] supporting a rear wheel [34] on a rear end thereof and having a front end operatively connected to the engine unit [2[ for vertical swinging movement. The motorcycle [1; 101; 201] further includes a front subframe [5; 205] detachably mounted on a front portion of the engine unit [2], the rear ends of the front swing arms [14, 18] being pivotally coupled to the front subframe for vertical swinging movement. The motorcycle [101] further includes a support frame [110] attached to the front subframe [5] and supporting a steering post [8], the support frame [110] having an air cleaner case [113]. The motorcycle [201] further includes a rear subframe [206] detachably mounted on a rear portion of the engine unit [2], the front end of the rear swing arm [33] being pivotally coupled to the rear subframe for vertical swinging movement, the rear subframe [206] having extensions [211, 212] supporting a rider's seat [242].

A motorcycle frame in which both the front and rear wheels are supported by respective pairs of swing arms pivotally supported by two side frames. Each side frame has a front and a rear bracket and a connecting structure extending upwardly and longitudinally over the engine. The connecting structure may be integral with both of the brackets or may be a pipe frame bolted to the brackets.

Double swing-arm motorcycle frame

A motorcycle having front and rear swing arm suspension systems. The motorcycle includes a structural frame including as a structural element the engine of the vehicle along with a support member. The front and rear suspensions are disclosed as being pivotally mounted to the support member. The cushion members are shown mounted to either the support member or directly to the engine. At the other end of the cushion members, progressive linkage mechanisms are employed.

Suspension system for motorcycles

In a built-up wheel having a hub and a wheel body which are connected with each other detachably by fastener means, the hub consists of a bearing cylinder and a wheel support member formed integrally with the bearing cylinder, while the wheel body is provided with a boss which is connected with the wheel support member by the fastener means, the boss being provided with an inner cylindrical portion formed integrally therewith so as to extend in the axial direction thereof for fitting engagement with the outer circumferential portion of the bearing cylinder. The hub and wheel body are formed of different kinds of synthetic resins. The modulus of tensile elasticity of the synthetic resin constituting the hub is set higher than that of the synthetic resin constituting the wheel body.

Built-up wheel for vehicles

A frameless motorcycle (1) comprises a front suspension (7, 8, 9, 11, 12, 13, 5a, 5b) including an upper front swing arm (7) and a lower front swing arm (8) cooperating with each other to support a front wheel (10) at the front ends thereof, a rear wheel (15), and an attachment member (3) which has a bottom wall portion (6) and left and right side wall portions (5, 5) continued to the left and right ends of the bottom wall portion (6), when viewed from ahead of the vehicle, and to which an engine (4) is attached. The upper and lower front swing arms (7, 8) are pivotably attached at rear end parts thereof to the side wall portions (5, 5) of the attachment member (3), such that the parts of the lower arm (8) attached to the side wall portions (5, 5) are offset inwardly of the vehicle by a predetermined distance (l) with respect to the parts of the upper arm (7) attached to the side wall portions (5, 5).

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Saitama, Japan

Akio Kawano