64results about How to "Seek lightweight" patented technology

The invention provides a vehicle body structure, which reduces the weight of the left and right side sills while ensuring the strength of the left and right side sills. A vehicle body (13) includes hollow left and right side sill (66, 66). Front ends of the side sills are formed into closed cross sections and substantially inverted-L shapes. The front end (66f) of the right side sill is bilaterally symmetrical to the front end of the left side sill. Rear ends (66r) of the left and right side sills are formed into substantially square-shaped cross sections. Portions (66m) from the front ends to the rear ends of the side sills are formed into closed cross sections which change smoothly from the inverted-L shaped cross sections to the square-shaped cross sections.

Each heat exchange tube of an evaporator is composed of two press-worked rectangular metal plates joined together in a stacked condition. The metal plates of the heat exchange tube are swelled outward whereby at least one refrigerant flow space extending in the vertical direction and having opened upper and lower ends is provided in the heat exchange tube. Insertion portions to be inserted into header sections of header tanks of the evaporator via tube insertion holes are provided on upper and lower end portions of each heat exchange tube at positions corresponding to the refrigerant flow space. A concave portion is formed in each of the insertion portions, excluding opposite ends thereof with respect to the front-rear direction, of the upper and lower end portions of each heat exchange tube, the concave portion being concaved inward with respect to a longitudinal direction of the heat exchange tube.

A side panel structure (20), includes a side outer panel (21) provided on the vehicle exterior side, and a side inner panel (22) provided on the vehicle interior (12) side. The side outer panel (21) and the side inner panel (22) form, as a closed cross-section structure, a peripheral edge section forming door openings (35, 36). The side outer panel (21) comprises an inner frame (26) formed from a high-strength steel sheet having a high tensile strength, and an outer frame (27) provided to the outer periphery section (26a) of the inner frame (26). The outer frame (27) is formed from a low-strength steel sheet having a low tensile strength.

A structure for a vehicle body rear portion has a rear pillar (21), a rear wheel arch (15), a damper stiffener (22) which is connected so that the load of the damper (18) transmitted through the rear wheel arch (15) is dispersed to the rear pillar (21), and a brace (23) which is connected from the rear wheel arch (15) to the rear pillar (21). The brace (23) has a front surface section (31) which faces forward, a side surface section (32), and a rear surface section (33) which faces the front surface section (31). A front ridge line section (35) and / or a rear ridge line section (36) reaches the rear pillar (21) from the rear wheel arch (15).

The invention provides a projection zoom lens, which has nine lenses in five groups. The first group is set as simple structure with the F value of wide-angle end lower than 1.7 and field angle more than 55 degree, which can well modifies various aberration and is cheap and smart. The projection zoom lens includes a first lens group (G) having a negative reflecting power and a second to fifth lens groups (G-G) each having a positive reflecting power are provided in the order from the reduction side. Nine lenses are distributed in a manner that the first lens group (G) has one lens, the second lens group (G) has one lens, the third lens group (G) has two lenses, the fourth lens group (G) has four lenses and the fifth lens group (G) has one lens. Since the second lens group (G), the third lens group (G) and the fourth lens group (G) are moved at the time of the power-varying operation, various kinds of aberrations may be made despite of simple configuration. Furthermore, the first lens group (G) is an aspherical lens which concave surface is directed to the reduction side.

The present invention provides a seat rail structure for a motorcycle in which sufficient strength and rigidity are secured while achieving weight reduction of a vehicle body. Means for Resolution A seat rail structure of a motorcycle includes a main frame and a seat rail (40) formed of magnesium alloy to be secured to the main frame, and the seat rail (40) includes a pair of left and right side wall portions (100L,100R) extending rearward from the main frame, and a plurality of connecting portions (210,220,230,240) formed into a substantially angular C-shape in cross section or into a substantially H-shape in cross section for connecting the left and right side wall portions (100L,100R), wherein at least part of the connecting portions (210,220,230,240) are connected at a level flush with or above the upper surface of the side wall portions (100L,100R), and the side wall portions (100L,100R) and the connecting portions (210,220,230,240) are integrally formed by die casting.

A steering apparatus of the invention includes: a fixed bracket (3); an outer column (1); an arm portion (2); a column pipe (6); a steering shaft (A) including an upper shaft (8) rotatably attached to the column pipe (6) and a lower shaft (7) which is connected by an universal joint and in which a male shaft (71) and a female shaft (72) engage with each other so as to freely extend and contract; and a fastening tool (4). The arm portion (2) includes: bifurcated arm-shaped portions (21) that extend from a front side in the axial direction of the outer column (1) toward an outer side in the axial direction; a first linking portion (22) formed between the two arm-shaped portions (21) so as to protrude upward from upper edges of the arm-shaped portions (21); and a second linking portion (23) that protrudes downward from lower edges of the arm-shaped portions (21), and the second linking portion protrudes (23) from the arm-shaped portions (21) by a larger amount than the first linking portion (22).

The objective of the riding type vehicle of the present invention is to provide a technology which may lighten a reception box and effectively utilize a rubber seat support structure of the reception box so as to reduce saddle vibration. A motor two-wheel vehicle (10) is provided with a saddle (16), a pair of saddle load supporting portions (71L, 71R) which are disposed on a saddle base plate (16) so as to transmit loads applied to the saddle (16) to one side of a vehicle body frame (21), wherein a pair of first saddle load supported portions (74L, 74R) for bearing loads from the saddle load supporting portions (71L, 71R) are disposed at the rear of a reception box (51), and first rubber seats (57, 57) are disposed to be adjacent to the first saddle load supported portions (74L, 74R).

This vehicle door (10) has: a door main body (20) comprising an inner panel (21) and an outer panel (22); a door sash (40) provided to the top of the door main body (20); a window opening section (14) encircled by the door sash (40) and the upper edge of the door main body (20); a window panel (17) that occludes at least a portion of the window opening section (14); a panel support frame (50) that supports at least a portion of the margin of the window panel (17); and a belt line reinforcing member (100) attached to the inner panel (21) or the outer panel (22) along the upper edge of the door main body (20). The belt line reinforcing member (100) has an upper extension section (102) extending along the door sash (40) above the upper edge of the door main body (20), and the panel support frame (50) is sandwiched by the door sash (40) and the upper extension section (102).

The invention provides a power connection part receiving structure for a straddle type vehicle, which can reduce the complexity degree of daily charging and achieve good water resistance of the power connection part. The straddle type vehicle comprises a vehicle body rack (10), a steerage device (20) which is maintained on the vehicle body rack with smooth operation, a front wheel (25) which is supported on the steerage device with free rotation, a front rectification cover (51) which covers the front and side parts of the steerage device, a front mud guard (26) which is disposed between the front rectification cover and the front wheel and is fixed on the steerage device, an electric motor (61) disposed on the vehicle body rack, a battery (64) disposed on the vehicle body rack, and a power connection part (130) providing electric power to the battery from the outside of the vehicle. The straddle type vehicle uses the electric motor as the power supply. The front surface side or upper surface side of the front rectification cover at the upper part of the front mud guard is provided with an opening part (110) which can be sealed through a cover component (120). The power connection part (130) is received in the opening part (110).

A dash-board lower panel (19) in a vehicle body (11) includes a vertical plate-shaped partition plate (41) which partitions the vehicle body into a front and a rear section, and an inclined plate (43) which inclines downward and rearward from the bottom end of the partition plate. At least part of the rear surface (19a) of the partition plate is reinforced by a reinforcement plate (28). The reinforcement plate has an extended section (92) at the bottom end thereof. The extended section extends from above a bent section (42), which is between the partition plate and the inclined plate, to below the bent section, and is joined to the inclined plate. A closed cross-section body (93), which is long and narrow in the vehicle-width direction, is formed by the extended section and the dash-board lower panel.

Provided is an electric vehicle that realizes a light electric straddled vehicle using a motor with a small size, and optimizes the left and right weight balances in the width direction of the vehicle with respect to the vehicle body centerline. The electric motor (250) is disposed inside a swing arm (124) of a cantilever type at a position overlapping a projection area of a rear wheel WR when seen from the side portion of the vehicle body. The motor driver (216) is disposed inside the swing arm (124) so that the vehicle body centerline (C) passing through at the front side of the vehicle body in the rear wheel (WR). The position (G2) of the center of gravity of the motor driver (216) is disposed to be offset in the direction opposite to the offset direction of the electric motor (250) with respect to the vehicle body centerline (C).